JP4410735B2 - Machine connecting line structure and machine equipped with the same - Google Patents

Description

  The present invention relates to a connection line structure for operating means provided in a machine body of a machine and a machine provided with this connection line structure.

  Conventionally, a construction machine as this type of machine, particularly a hydraulic excavator, is configured such that a console equipped with an operation lever can be adjusted in the front-rear direction in accordance with the body shape of the driver, and a passage is provided when getting on and off. The console is rotatably mounted so as to jump up to the rear side. For adjustment and rotation of these consoles, the path of the pilot hose disposed in the console and connected to the operation lever is curved in a U shape so that the U shape of the pilot hose A configuration is known in which the movement of the console is absorbed by a portion bent into a mold (see, for example, Patent Document 1).

  However, in the connection line structure in which the path of the pilot hose in the console is curved in a U shape as described above, the movement range of these pilot hoses is large. For this reason, since the inside of this console will be occupied as a movement allowance space of a pilot hose, it is not easy to install an electrical component in this console or to wire an electric wire. In addition, when an electrical component is installed in the console or an electric wire is forcibly installed, the pilot hose is moved by the movement of the pilot hose that occurs when the console is moved. May interfere with other parts.

Therefore, as a connection line structure of this type of pilot hose, a substantially cylindrical duct is provided in a console configured to be flipped up to the front side when getting on and off. A configuration is known in which the pilot hose is inserted into the duct so that it can be pulled out, and the pilot hose is pulled out of the duct when the console is flipped up to absorb the movement of the pilot hose (for example, (See Patent Document 2) .

On the other hand, as the work environment has improved in recent years, air conditioners are always installed in the excavator cab. To prevent dust from entering the cab, the inside of the cab is pressurized slightly higher than the outside air. Therefore, it is important to ensure the airtightness in the cab because pressure rise is required to prevent dust from entering from the outside.
JP 2004-143672 A JP 2001-40700 A

  However, in the connection line structure of the pilot hose described above, a duct is provided in the console, and the pilot hose is pulled out from the duct when the console is flipped up to the front side. Since the pilot hose cannot be fixed in order to smoothly draw out, it is not easy to ensure airtightness. At the same time, since the console can only move in the direction in which the pilot hose is pulled out of the duct, the pilot hose cannot be moved to adjust the front and back to slide the console horizontally, and the console cannot be adjusted to adjust the front and rear. have.

  The present invention has been made in view of the above points, and a connection line structure of a machine that has a small movement allowance when moving the operating means in the vertical direction and the horizontal direction and that is easy to ensure airtightness, and a machine including the same. The purpose is to provide.

Invention 請 Motomeko 1 described comprises a machine body, a movable part provided movably this machine body, and an operation means for operating the movable part provided movably in the vertical direction and the longitudinal direction to the machine body A connection line structure for the machine, wherein one end side is fixed to the machine body and the first connection line part in the horizontal direction that absorbs the change caused by the movement of the operation means in the front-rear direction, and the other of the first connection line part A second connection line portion in the vertical direction that has one end side connected to the end side and the other end side connected to the operation means and absorbs a change caused by the movement of the operation means in the vertical direction. The line part is curved in the horizontal direction, and the second connection line part is a machine connection line structure curved in the vertical direction.

And the one end side of the horizontal 1st connection line part which absorbs the change accompanying the movement of the operation means in the front-back direction was fixed to the machine body. Furthermore, one end side of the second connection line portion in the vertical direction that absorbs a change associated with the vertical movement of the operating means is connected to the other end side of the first connection line portion, and the second connection line portion. The other end of was connected to the operating means. As a result, when the operating means is moved in the front-rear direction, the first connection line portion absorbs changes accompanying the movement of the operating means in the front-rear direction. Further, when the operating means is moved in the vertical direction, the second connection line portion absorbs the change accompanying the vertical movement of the operating means. Therefore, the first connection line portion and the second connection line portion are formed by a portion that absorbs a change associated with the movement of the operation means in the front-rear direction and a portion that absorbs a change associated with the movement of the operation means in the vertical direction. By dividing into the above, the movement allowance of the first connection line portion and the second connection line portion when the operation means moves in the vertical direction and the front-rear direction is reduced. Furthermore, by fixing one end side of the first connection line portion to the machine body, it becomes easy to ensure airtightness to the machine body by the one end side of the first connection line portion. In particular, the first connection line portion was bent in the horizontal direction, and the second connection line portion was bent in the vertical direction. As a result, when the operating means is moved in the front-rear direction, the first connection line portion moves in the horizontal direction as the operating means moves in the front-rear direction. Further, when the operating means is moved in the vertical direction, the second connecting line portion moves in the vertical direction as the operating means is moved in the vertical direction. Therefore, when the operating means is moved in the front-rear direction or the up-down direction, either the first connection line part or the second connection line part moves separately along the moving direction of the operating means. The movement allowance of the first connection line portion and the second connection line portion when the operating means moves in the vertical direction and the front-rear direction is reduced.

According to a second aspect of the invention, the connection line structure of the machine according to claim 1 Symbol placement, machine, the adjusting member mounted operating means movably is mounted movably in the vertical direction in the longitudinal direction to the machine body A first fixing portion for fixing one end side of the first connection line portion to the machine body, and fixing the other end side of the first connection line portion and one end side of the second connection line portion to the adjustment member. It is a connection line structure of a machine provided with the 2nd fixed part.

  And the one end side of the 1st connection line part was fixed to the machine body with the 1st fixed part. In addition, each of the other end side of the first connection line portion and the one end side of the second connection line portion is second fixed to an adjustment member that is attached to the machine body so as to be adjustable in the front-rear direction and to which the operating means is attached Fixed at the part. As a result, when the adjusting member is moved in the front-rear direction and the operating means is moved in the front-rear direction, one end side is fixed to the machine body at the first fixing portion and the other end side is fixed at the second fixing portion. The first connection line portion fixed to the adjustment member absorbs the change accompanying the movement of the operation means in the front-rear direction. Further, when the operating means is moved in the vertical direction, the second connecting line portion in which one end side is fixed to the adjusting member and the other end side is connected to the operating means in the second fixing portion is the operating means. Absorbs changes associated with vertical movement. Therefore, the change accompanying the movement of the operation means in the front-rear direction via the adjusting member is absorbed only by the first connection line portion, and the change accompanying the movement of the operation means in the vertical direction is only the second connection line portion. Therefore, the movement allowance of the first connection line portion and the second connection line portion when the operation means moves in the vertical direction and the front-rear direction is further reduced.

The invention according to claim 3 is the connection line structure of the machine according to claim 2 , further comprising a support member having a recess for guiding the first connection line portion and attached between the machine body and the adjustment member, The first connection line portion has a machine connection line structure disposed in the recess of the support member.

  Then, by arranging the first connection line portion in the concave portion of the support member attached between the machine main body and the adjustment member, the first connection line portion can be easily placed between the machine main body and the adjustment member. Since it is arranged and guided, the arrangement work of the first connection line portion is facilitated.

The invention of claim 4 mounting described in connection line structure of the machine according to claim 2, a first concave portion that penetrates along the lateral direction of the machine body, before and after the machine body from the intermediate portion of the first recess A support member attached between the machine body and the adjustment member, wherein the first connection line portion is a first recess of the support member. It is a connection line structure of the machine arrange | positioned from one end of this to the back side of the 2nd recessed part.

  And from the 1st recessed part one end penetrated along the left-right direction of the machine main body of the support body attached between the machine main body and the adjustment member, along the front-back direction of the machine main body from the intermediate part of this 1st recessed part By disposing the first connection line portion to the rear side of the second recess penetrating to the rear side, the first connection line portion can be more easily disposed between the machine body and the adjustment member. Therefore, the operation of arranging the first connection line portion is further facilitated.

The invention according to claim 5 comprises a connection means for connecting the other end side of the first connection line portion and one end side of the second connection line portion in the connection line structure of the machine according to claim 2 , This connection means is a connection line structure of a machine fixed to the second fixing portion.

  Then, the other end side of the first connection line portion and the one end side of the second connection line portion are connected by the connecting means, and the first connecting line portion is fixed to the second fixing portion. Compared with the case where the other end side of the connection line portion and the one end side of the second connection line portion are separately fixed to the adjustment member by the second fixing portion, the connecting means is used as the adjustment member by the second fixing portion. Each of the other end side of the first connection line portion and the one end side of the second connection line portion can be fixed to the adjustment member simply by fixing the first connection line portion. Fixation to the adjustment member on the other end side and one end side of the second connection line portion becomes easier.

The invention described in claim 6 is the machine connection line structure according to claim 5, wherein the connection means is an L-shaped joint bent into an L shape.

  When the connecting means is an L-shaped joint bent into an L shape, the first connecting line portion and the second connecting line portion can be vertically bent and disposed. The movement allowance of the first connection line portion and the second connection line portion can be reduced.

According to a seventh aspect of the present invention, in the connection line structure for a machine according to the fifth aspect , the connection means connects one end side of the second connection line portion to the other end side of the first connection line portion in a rotatable manner. It is a connection line structure of a machine that is a swivel joint.

  And the connection means was made into the swivel joint, and the one end side of the 2nd connection line part was rotatably connected to the other end side of the 1st connection line part with this swivel joint. As a result, since the one end side of the second connection line portion can be rotated with respect to the other end side of the first connection line portion, the first connection is made when the operating means is moved in the front-rear direction or the vertical direction. One end side of the second connection line portion rotates with respect to the other end side of the line portion to absorb a change accompanying the movement of the operation means. Therefore, when the operating means is moved in the front-rear direction and the up-down direction, the movement allowance of the first connection line portion and the second connection line portion is further reduced.

The invention according to claim 8 is the connection line structure of the machine according to any one of claims 1 to 7, wherein the machine is provided with a seat provided with operating means and movably provided in the vertical direction and the front-rear direction. It is a connection line structure.

  When the operation means moves in the front-rear direction or the up-down direction as the seat moves in the front-rear direction or the up-down direction, the first connection line portion absorbs the change accompanying the movement of the operation means in the front-rear direction. Then, the second connection line portion absorbs the change accompanying the movement of the operating means in the vertical direction. Accordingly, since the movement allowance of the first connection line portion and the second connection line portion when the seat moves in the front-rear direction and the vertical direction is reduced, the movement of the first connection line portion and the first connection line portion is reduced. When the bill is the same, the amount of movement of the seat in the front-rear direction and the up-down direction can be increased.

The invention according to claim 9 is a machine main body, a movable part movably provided on the machine main body, operating means provided on the machine main body so as to be movable in the vertical direction and the front-rear direction, and operating the movable part. It is a machine provided with the connection line structure of the machine in any one of 1 thru | or 8 .

In the machine connection line structure according to any one of claims 1 to 8, an operating means for operating the movable portion is provided on the machine body so as to be movable in the front-rear direction and the vertical direction. As a result, when the operating means is moved in the front-rear direction, the first connection line portion absorbs the change accompanying the movement of the operating means in the front-rear direction, and when the operating means is moved in the up-down direction, The second connection line portion absorbs the change accompanying the movement of the operating means in the vertical direction. Therefore, it has the same effect as the invention according to any one of claims 1 to 8 .

According to the invention 請 Motomeko 1, wherein a portion for absorbing the change caused by the movement of the front and rear direction of the operating means, and a portion for absorbing the change caused by the vertical movement of the operating means, the first connection line And the second connection line portion can reduce the movement allowance of the first connection line portion and the second connection line portion when the operating means is moved in the vertical direction and the front-rear direction. By fixing one end side of one connection line portion to the machine main body, it is possible to easily ensure airtightness to the machine main body by one end side of the first connection line portion. In particular, when the operating means is moved in the front-rear direction or the up-down direction, either the first connection line part or the second connection line part moves separately along the moving direction of the operating means. It is possible to reduce the movement allowance of the first connection line portion and the second connection line portion when the operating means moves in the vertical direction and the front-back direction.

According to invention of Claim 2 , the change accompanying the movement to the front-back direction via the adjustment member of the operation means can be absorbed only by the 1st connection line part, and the change accompanying the movement to the up-down direction of the operation means can be absorbed. Since it can be absorbed only by the second connection line part, the movement allowance of the first connection line part and the second connection line part when the operating means is moved in the vertical direction and the front-rear direction can be further reduced.

According to the invention of claim 3 , the first connection line portion can be guided between the machine main body and the adjustment member simply by disposing the first connection line portion in the concave portion of the support member. The arrangement | work operation | work of this 1st connection line part can be made easy.

According to the invention described in claim 4, it is only necessary to dispose the first connection line portion from one end of the first concave portion of the support member to the rear side of the second concave portion. Since the first connection line portion can be easily guided in between, the operation of arranging the first connection line portion can be further facilitated.

According to the fifth aspect of the present invention, each of the other end side of the first connection line and the one end side of the second connection line portion can be obtained by simply fixing the connection means to the adjustment member at the second fixing portion. Can be fixed to the adjustment member, so that the second fixing portion can more easily be fixed to the adjustment member on the other end side of the first connection line portion and the one end side of the second connection line portion.

According to the sixth aspect of the present invention, the first connection line portion and the second connection line portion can be vertically bent and arranged, so that the first connection line portion when the operating means is moved and The movement allowance of the second connection line portion can be further reduced.

According to the seventh aspect of the present invention, when the operating means is moved in the front-rear direction or the up-down direction, one end side of the second connection line portion rotates relative to the other end side of the first connection line portion. Since the change accompanying the movement of the operation means is absorbed, the movement allowance of the first connection line portion and the second connection line portion when the operation means is moved in the front-rear direction and the vertical direction can be reduced.

According to the invention described in claim 8, since the movement margin of the first connection line part and the second connection line part when the seat moves in the front-rear direction and the vertical direction is reduced, the first connection line part and When the movement allowance of the first connection line portion is the same, the amount of movement of the seat in the front-rear direction and the vertical direction can be increased.

According to the ninth aspect of the present invention, since the operation means is arranged in the connection line structure of the machine according to any one of the first to eighth aspects, the operation means is moved when the operation means is moved in the front-rear direction. When the first connecting line portion absorbs the change accompanying the movement in the front-rear direction and the operating means is moved in the up-down direction, the second connecting line portion changes the change accompanying the up-down movement of the operating means. Since it absorbs, the same effect as the invention of any one of claims 1 to 8 can be obtained.

  The present invention will be described in detail below with reference to the first embodiment shown in FIGS.

  FIG. 4 shows a hydraulic excavator 1 which is a construction machine as a work machine. In this excavator 1, an upper revolving body 5 as a movable part is pivotably attached to an upper side of a lower traveling body 3 having an endless crawler belt 2 capable of self-running via a revolving part 4. Yes. The lower traveling body 3, the turning section 4, and the upper turning body 5 constitute a work machine main body 6.

  A boom 12 bent in a substantially square shape toward the front is pivotally supported on the front side of the upper swing body 5 so as to be rotatable in the vertical direction. Further, a boom cylinder 13 is attached to the lower side of the boom 12.

  Further, an arm 14 is pivotally supported at the tip end side of the boom 12 so as to be rotatable in the front-rear direction. A bucket 15 is pivotally supported on the distal end side of the arm 14 so as to be rotatable. An arm cylinder 16 that rotates the arm 14 in the front-rear direction is attached to the rear surface of the boom 12. The distal end side of the arm cylinder 16 is pivotally supported on the proximal end side of the arm 14 so as to be rotatable. Further, a bucket cylinder 17 is attached to the back surface of the arm 14.

  Here, the boom 12 and the arm 14 constitute a work arm 18. The work arm 18, bucket 15, boom cylinder 13, arm cylinder 16 and bucket cylinder 17 constitute a front work device 19 as a movable part. The front working device 19 is movably attached to the upper swing body 5 of the work machine body 6.

  On the other hand, on the front side of the upper swing body 5, a box-shaped cab 20 is provided as a cabin as an operation space in which an operator who is a driver who operates the hydraulic excavator 1 enters. The cab 20 is provided on the upper swing body 5 on the left side of the boom 12. A flat floor 21 constituting the bottom surface of the cab 20 is provided at the bottom of the cab 20. Further, on the floor 21 of the cab 20, an air conditioner unit 22 as an air purifier for purifying the temperature and air in the cab 20 is attached. The air conditioner unit 22 is mounted on the rear floor 21 in the cab 20.

  On the floor 21 in the cab 20 on the front side of the air conditioning unit 22, a seat 23 as a driver's seat as a seat on which an operator sits is attached. The seat 23 includes a substantially rectangular flat plate-like seat plate portion 24 on which an operator is seated. At the rear end portion of the seat plate portion 24, a back portion 25 serving as a backrest of an operator seated on the seat plate portion 24 is attached.

  Further, a seat support 26 as a flat box-like support member fixed on the floor 21 is attached on the floor 21 below the seat plate portion 24 of the seat 23. The seat support 26 supports the seat 23 on the floor 21 and has a blowing function as a duct for blowing the air whose temperature is adjusted by the air conditioner unit 22 to the front side in the cab 20. . On the seat support 26, a pair of long rail-like slide rails 27 are attached as slide portions along the horizontal direction. These slide rails 27 are adjustment members that allow the seat support 26 to be adjusted along the front-rear direction, which is the horizontal direction.

  The slide rails 27 are provided with a lower rail 28 as a pair of elongated rail-like slide lowers fixed on the seat support 26 along the longitudinal direction. An elongated rail-like upper rail 29 as a slide upper is attached to each of the lower rails 28 so as to be movable in the front-rear direction. These upper rails 29 are attached along the front-rear direction to the lower surface of a high riser 31 that is a movable base as a seat adjustment unit that allows the seat 23 to be adjusted along the vertical direction that is the vertical direction.

  The high riser 31 enables the seat 23 to be adjusted in the front-rear direction with respect to the floor 21 by a pair of slide rails 27. On the high riser 31, the seat 23 is attached and fixed in a state where the lower surface of the seat plate portion 24 of the seat 23 is opposed. That is, the high riser 31 operates a lever (not shown) provided on the high riser 31 to change the height of the high riser 31 itself so that the seat 23 on the high riser 31 is raised along the vertical direction. Let me adjust.

  Further, console boxes 32 as console members are attached to both sides of the high riser 31, respectively. These console boxes 32 are configured such that, when the height of the seat 23 is adjusted in the vertical direction by the high riser 31, the console boxes 32 are also adjusted in height along the vertical direction. The console box 32 can be adjusted in the front-rear direction by moving the slide rail 27 along the front-rear direction. An operation lever 33 that is an operation means as an operation device for operating the front working device 19 of the excavator 1 and the like is attached to the front upper portion of each console box 32.

  Further, inside each console box 32 below these operation levers 33, as shown in FIG. 1, for example, two pairs of pilot valves that are remote control valves as a total of four flow control valves and inputs (IN ) And drain (OUT) and a pilot valve device 34 having a total of six ports is respectively attached. Pilot oil, which is each operation valve of the pilot valve device 34, is supplied with pilot oil from a pilot pump connected to a main pump (not shown) to transmit a predetermined pilot primary pressure. Further, each pilot valve of the pilot valve device 34 controls the pilot primary pressure and outputs the pilot secondary pressure by moving the operation lever 33 in either the front-rear direction or the left-right direction. Each of the pair of pilot valves is connected to an upper end side that is one end side of a pilot hose 35 as an elongated hose-like connection line that is a hydraulic hose for pilot operation.

  Here, the hydraulic piping structure of the pilot hose 35 will be described. These pilot hoses 35 are provided with a first hose 36 that is a first hose bow as a first piping part that constitutes a lower end side that is one end side of these pilot hoses 35. These first hoses 36 are first connection line portions, are curved in the horizontal direction, and are piped in the horizontal direction. Specifically, the first hose 36 has a lower end side which is one end side of the first hose 36 from the inside of the cab 20 as a through portion provided in a substantially central portion of the floor 21 of the cab 20. It passes through the hole 37 and is connected to a control valve (not shown) installed in the upper swing body 5. That is, the control valve is configured to be pilot operated by operating the operation lever 33.

  Here, the portion of the first hose 36 that passes through the through-holes 37 is airtightly held by the airtight seal 40 so that the airtightness of the through-holes 37 is maintained. Further, a portion on the upper end side which is the other end side projecting on the floor 21 from the through hole 37 of the first hose 36 is forward of the through hole 37 of the floor 21 as shown in FIGS. The pipes are arranged in a straight line in the horizontal direction. And the upper end side of the part arranged in a straight line of this 1st hose 36 is being fixed on the seat support 26 with the floor bracket 38 as an elongate strip-shaped 1st fixing | fixed part. The floor bracket 38 covers a total of twelve first hoses 36 in the width direction, and is attached in a state where the longitudinal direction is along the width direction of the seat support 26. Further, the floor bracket 38 has both ends of the floor bracket 38 fixed to the seat support 26 in a state where each of the twelve first hoses 36 is covered in the width direction. Furthermore, each of the floor bracket 38 and the through hole 37 is provided at a substantially central portion in the width direction on the seat support 26.

  The portion of the first hose 36 on the upper end side of the portion fixed on the seat support 26 by the floor bracket 38 is curved and piped so as to spread in a fan shape toward the left and right sides of the seat support 26. ing. Here, as shown in FIG. 2, the six first hoses 36 located on the right side in the top view have a certain margin from the central part of the cab 20 toward the right side. It is bent into a circular arc that is a bow and is branched. Further, the six first hoses 36 located on the left side in the top view are curved and branched in a circular arc shape from the center of the cab 20 toward the left side. That is, each of the twelve first hoses 36 can absorb the movement that is a change of the first hose 36 due to the movement of the operation lever 33 along the front-rear direction, for example, the front-rear adjustment of the seat 23. It is curved and piped with a certain margin.

  On the other hand, a support bracket 39 as a second fixing portion is attached to each of the upper rails 29 of the pair of slide rails 27 movably attached to the seat support 26 on the floor 21 along the front-rear direction. Yes. These support brackets 39 fix the upper end side of the first hose 36 to the high riser 31 by fixing the upper end side of the first hose 36 to the upper rail 29. Specifically, the support bracket 39 attached to the upper rail 29 on the right side in the top view fixes the upper ends of the six first hoses 36 on the right side that are curved toward the right side in the top view. Further, the support bracket 39 attached to the upper rail 29 on the left side in the top view fixes the upper ends of the six first hoses 36 on the left side that are curved toward the left side in the top view.

  Each of these support brackets 39 is provided with an L-shaped joint 41 curved in an L-shape, which is an L-shaped joint as a connecting means for bending the upper end of the first hose 36 upward in an L-shape. Being fixed. These L-shaped joints 41 are attached in a state where the lower end side is horizontal and the upper end side is directed upward. Specifically, the six L-shaped joints 41 attached to the support bracket 39 on the right side in the top view have the upper ends of the six first hoses 36 piped on the right side in the top view connected to the lower end side. The upper ends of these six first hoses 36 are bent upward. At this time, the upper ends of the six L-shaped joints 41 are arranged such that the upper ends of the first hoses 36 are directed from the inside to the outside according to the order in which they are arranged on the seat support 26 from the inside to the outside. They are lined up side by side.

  Similarly, the six L-shaped joints 41 attached to the support bracket 39 on the left side on the inner top view have the upper ends of the six first hoses 36 piped on the left side on the top view connected to the lower end side. The upper ends of these six first hoses 36 are bent upward. At this time, the upper end sides of the first hose 36 are changed from the inner side to the outer side according to the order in which the upper ends of the six L-shaped joints 41 are arranged on the upper swing body 5 from the inner side toward the outer side. It is lined up side by side.

  And the lower end side which is one end side of the elongated hose-like second hose 42 which is the second hose bow part which is the second piping part is connected to the upper end part of these 12 L-shaped joints 41 respectively. Being connected. The second hose 42 is a second connection line portion. Further, an L-shaped joint 41 and a support bracket 39 are interposed between the lower end side of the second hose body 42 and the upper end side of the first hose 36. The lower ends of the second hoses 42 are fixed to the high riser 31 by being fixed to the upper rail 29 by an L-shaped joint 41. Further, the upper end side, which is the other end side of the second hose 42, is connected to and connected to a pilot valve of a pilot valve device 34 attached in each console box 32.

  Therefore, these second hoses 42 are curved in the vertical direction and are piped in a substantially vertical direction. Further, as shown in FIG. 1, the second hose 42 moves along the vertical direction of the operation lever 33, for example, adjusts the height of the console box 32, or jumps up to the rear side of the console box 32. The second hose 42 is moved in a bow shape with a certain margin to absorb the movement of the second hose 42. In other words, these second hoses 42 are piped while being slackened into a bow shape with a certain margin so as not to interfere with other parts such as electrical components mounted in the console box 32.

  Next, the function and effect of the first embodiment shown in FIGS. 1 to 4 will be described.

  First, when adjusting the console box 32 along with the seat 23 according to the body shape of the operator sitting on the seat 23 in the cab 20 of the excavator 1, the high riser 31 is moved back and forth with respect to the seat support 26.

  At this time, as the high riser 31 moves in the front-rear direction, the support bracket 39 fixed to the high riser 31 moves in the front-rear direction.

  As the support bracket 39 is moved in the front-rear direction, the portion of the first hose 36 of each pilot hose 35 that is bent and slackened in an arcuate shape in the horizontal direction from the floor bracket 38 to the support bracket 39. Moves and stretches or sags.

  At this time, since each of the second hoses 42 of each pilot hose 35 is attached between the support bracket 39 and each pilot valve device 34 of the operation lever 33, the support bracket 39 is moved in the front-rear direction. Then do not move.

  Therefore, the change of each pilot hose 35 in accordance with the front-rear direction of the support bracket 39, that is, the movement such as loosening and stretching, causes the bow between the floor bracket 38 of the first hose 36 of each pilot hose 35 to the support bracket 39. It is absorbed only by the curved part.

  Next, when the console box 32 is adjusted up and down together with the seat 23 in the cab 20 of the excavator 1, the lever of the high riser 31 is operated to change the height of the high riser 31 itself and is attached to the high riser 31. The console box 32 is moved in the vertical direction together with the seat 23.

  At this time, as the height of the high riser 31 itself changes, the second hose 42 slackened in the vertical direction of each pilot hose 35 moves in the vertical direction and extends or loosens.

  Further, each of the first hoses 36 of each pilot hose 35 is attached between the support bracket 39 fixed on the floor 21 in the cab 20 and the upper rail 29 of the slide rail 27. Does not move up and down with its own height change.

  Therefore, changes in each pilot hose 35 accompanying the height change of the high riser 31 itself, that is, movements such as slack and elongation are absorbed only by the second hose 42 of each pilot hose 35.

  Next, the console box 32 in the cab 20 is obstructed so as to secure a passage for the operator to get on and off the cab 20 of the excavator 1, and the console box 32 is rotated toward the rear side to jump. When raised, the front side of the console box 32 is rotated upward.

  At this time, the second hose 42 slackened in the vertical direction of each pilot hose 35 moves up and down and stretches or slacks as the console box 32 jumps to the rear side.

  Further, each of the first hoses 36 of each pilot hose 35 is attached between the floor 21 in the cab 20 and the support bracket 39 fixed to the upper rail 29 of the slide rail 27. It does not move as the box 32 is flipped up to the rear side.

  Therefore, the change of each pilot hose 35 accompanying the jumping to the rear side of the console box 32, that is, the movement such as loosening and stretching, is absorbed only by the second hose 42 of each pilot hose 35.

  As described above, according to the first embodiment, the console box 32 absorbs a change in the pilot hose 35 due to the front-rear direction movement, and the height of the console box 32 is adjusted. The portion that absorbs the change in the pilot hose 35 due to the vertical movement caused by the jumping up is divided into a first hose 36 that is slack in the horizontal direction and a second hose 42 that is slack in the vertical direction. Therefore, the movement allowance, which is the swing amount of each of the first hose 36 and the second hose 42 when the operation lever 33 moves in the vertical direction and the front-rear direction accompanying the movement of the console box 32, is reduced.

  For this reason, pipe runout of the pilot hose 35 in the console box 32 accompanying the movement of the operation lever 33 in the vertical direction and the front-back direction is reduced. Therefore, the piping hose 35 in the console box 32 may cause the pilot hose 35 to collide with or rub against other parts such as electrical components previously stored in the console box 32. Less.

  That is, since the movement allowance space of the pilot hose 35 in these console boxes 32 becomes smaller, the accommodation amount in these console boxes 32 can be increased, and the installation of other parts in these console boxes 32 can be facilitated. . At the same time, since the movement allowance of these pilot hoses 35 is reduced, the console box 32 in which these pilot hoses 35 are accommodated can be made smaller, and the console box 32 having a large adjustment allowance can be used correspondingly. it can.

  In addition, since there is little movement allowance of the pilot hose 35 when the operation lever 33 moves in the vertical direction and the front-rear direction accompanying the movement of each console box 32, the movement allowance of the pilot hose 35 in each console box 32 is conventional. If the same is secured, the amount of movement of the console box 32 can be secured more. Therefore, the amount of movement of the seat 23 to which the console box 32 is attached in the front-rear direction and the up-down direction, that is, the front-rear adjustment amount and the vertical adjustment amount of the seat 23 can be increased.

  Further, the portion inserted into the through hole 37 provided on the floor 21 of the cab 20 on the lower end side of the first hose 36 of each of the pilot hoses 35 is moved as the console box 32 moves. Since it is not necessary to configure, the floor bracket 38 is used to fix the floor 21. As a result, it is easy to ensure the airtightness in the cab 20 by simply forming the portion of the first hose 36 of each pilot hose 35 inserted through the through hole 37 of the floor 21 with the airtight seal 40. Can be. Therefore, since the airtightness in the cab 20 can be easily ensured, a pressure rise mechanism is installed to prevent dust and the like from entering the cab 20 by making the atmospheric pressure in the cab 20 slightly higher than the outside air. It becomes easy.

  Further, the upper end side of the first hose 36 and the lower end side of the second hose 42 of each of the pilot hoses 35 are respectively connected by L-shaped joints 41, and each of these L-shaped joints 41 is supported by the support bracket 39. The slide rail 27 is fixed to the upper rail 29. As a result, compared with the case where the upper end side of the first hose 36 and the lower end side of the second hose 42 are fixed to the upper rail 29 with separate brackets, the L-shaped joint 41 is supported by the support bracket 39 on the upper rail. Each of the upper end side of the first hose 36 and the lower end side of the second hose 42 can be fixed to the upper rail 29 simply by being fixed to 29. Accordingly, the support bracket 39 can more easily fix the upper end side of the first hose 36 and the lower end side of the second hose 42 to the upper rail 29.

  At this time, the upper end side of the first hose 36 and the lower end side of the second hose 42 of each pilot hose 35 are connected by the L-shaped joint 41, The second hose 42 can be piped with its lower end side bent upward. That is, the first hose 36 of each pilot hose 35 is oriented in the horizontal direction while the lower end side of the second hose 42 of each pilot hose 35 is oriented upward. The upper end side of the first hose 36 and the lower end side of the second hose 42 can be connected to perform piping. Accordingly, the horizontal movement allowance by each of the first hoses 36 and the vertical movement allowance by each of the second hoses 42 can be reduced.

  Furthermore, the downstream side of the first hose 36 of each pilot hose 35 is bent substantially horizontally from the portion inserted through the through hole 37 of the floor 21 so that the first hose 36 is disposed substantially horizontally. At the same time, the second hose 42 of each pilot hose 35 is disposed substantially vertically without being loosened, so that each of the first hose 36 and the second hose 42 is provided. The pilot hose 35 can absorb the front / rear adjustment, height adjustment, and jumping up of the console box 32 without unnecessarily increasing the length.

  In the first embodiment, the L-shaped L-shaped joint 41 connects the upper end side of the first hose 36 and the lower end side of the second hose 42 of each pilot hose 35. The upper end side of the first hose 36 and the lower end side of the second hose 42 are connected by a swivel joint (not shown) as a rotary joint, and the upper end side of the first hose 36 is connected by this swivel joint. And the lower end side of the second hose 42 can be rotatably connected.

  In this case, when the operation lever 33 is moved in the front-rear direction or the up-down direction in accordance with the movement of the console box 32, the lower end of the second hose 42 with respect to the upper end side of the first hose 36 of each pilot hose 35. The side rotates as required by the rotation of the swivel joint. Therefore, when these operation levers 33 are moved, the second hose 42 rotates with respect to the first hose 36 at the swivel joint, and the change of the pilot hose 35 accompanying the movement of these operation levers 33 is absorbed. To do. For this reason, since the movement allowance of each pilot hose 35 when these operation levers 33 are moved can be reduced, the movable range of the console box 32 to which these operation levers 33 are attached can be further expanded.

  Further, each of these pilot hoses 35 is divided into a first hose 36 and a second hose 42, and the first hose 36 and the second hose 42 are joined and connected by an L-shaped joint 41. However, each of the pilot hoses 35 can be constituted by a single hydraulic hose that is not divided. In this case, the lower end side of each pilot hose 35 is fixed on the floor 21 by the floor bracket 38, and the intermediate portion of each pilot hose 35 may be fixed to the upper rail 29 of the slide rail 27 by the support bracket 39. .

  In the first embodiment, the upper end side of the first hose 36 and the lower end side of the second hose 42 of each pilot hose 35 are connected by the L-shaped joint 41, respectively. The downstream side of 36 is inserted from both sides of the seat support 26 into the inside, protrudes from the rear part, and is inserted into the through hole 37 of the floor 21. In the second embodiment shown in FIGS. Thus, a harness (not shown) as a wiring electrically connected to various switches and sensors attached to the upper end surface of the console box 32 or the operation lever 33 is integrally provided along the pilot hose 35. You can also

  These harnesses together with the pilot hose 35 constitute a connection line. Further, each of these pilot hoses 35 is not divided into a first hose 36 and a second hose 42, and is constituted by an integral hydraulic hose. Further, the harness and the pilot hose 35 are integrally bundled in each of the left and right directions of the seat 23 and arranged as a pair of connection line groups 51 as connection lines.

  On the other hand, a concave groove portion 52 having a concave cross section as a first concave portion penetrating along the left-right direction of the seat support 26 is formed on the upper surface which is one main surface of the seat support 26. The concave groove 52 is provided at a position slightly rearward of the center portion of the seat support 26 in the front-rear direction. Further, the concave groove 52 has a width dimension and a depth dimension that do not buffer each connection line group 51 when the seat 23 is moved along the front-rear direction. That is, the concave groove 52 has a width dimension and a depth dimension that are at least larger than the thickness dimension of the connection line group 51.

  A convex front convex portion 53 along the front end surface of the seat support 26 is integrally provided on the front side of the concave groove portion 52 of the seat support 26. The front convex portion 53 is provided in the left-right direction of the seat support 26, and the upper surface protrudes above the upper surface of the concave groove portion 52. A convex rear convex portion 54 along the rear end surface of the seat support 26 is also provided integrally with the rear side of the concave groove portion 52 of the seat support 26. The rear convex portion 54 is also provided in the left-right direction of the seat support 26, and the upper surface protrudes above the upper surface of the concave groove portion 52.

  Further, in the central portion in the left-right direction that is the longitudinal direction of the rear convex portion 54, a groove-shaped communication concave portion 55 as a second concave portion along the front-rear direction that is the width direction of the rear convex portion 54 is provided. Is provided. The communication recess 55 communicates from the rear end surface of the seat support 26 to the recessed groove portion 52 of the seat support 26, and is formed to have a height dimension equal to the recessed groove portion 52. The communication recess 55 has a width dimension and a depth dimension that do not buffer each connecting line group 51 when the seat 23 is moved in the front-rear direction. That is, the communication recess 55 has a width dimension that is larger than at least the total dimension of the thickness dimensions of the pair of connection line groups 51, and a depth dimension that is greater than the thickness dimension of the connection line groups 51. Have.

  A pair of slide rails 27 are mounted on the seat support 26, and the pair of slide rails 27 extends along the front-rear direction on the front convex portion 53 and the rear convex portion 54 of the seat support 26. Assembled and attached. For this reason, between the pair of slide rails 27 and the recessed groove portion 52, an opening portion 56 opened in the left-right direction of the seat support 26 is formed.

  Here, in these connection line groups 51, the portions inserted into the respective openings 56 of the recessed groove portions 52 of the seat support 26 of these connection line groups 51 are supported by the support bracket 39 as joint portions 57 as connection portions. It is fixed to the upper rail 29 of the slide rail 27. Therefore, the connection line group 51 is a horizontal part in which the lower end side portion of the connection line group 51 is loosened in the horizontal direction and absorbs changes accompanying the movement of the seat 23 in the front-rear direction. It becomes the horizontal slack part 58 as a 1st connection line part which is a slack part. Further, these connection line groups 51 are arranged in such a manner that portions on the upper end side of the joint portions 57 of these connection line groups 51 are arranged so as to be slackened in the vertical direction and absorb changes due to the vertical movement of the seat 23. It becomes the vertical slack part 59 as a 2nd connection line part which is a slack part.

  The horizontal slack portions 58 of the connection line group 51 are inserted into the concave groove portion 52 from the openings 56 located at both ends of the concave groove portion 52 of the seat support 26, and are routed through the piping and Wired. Further, these horizontal slack portions 58 are inserted from the recessed groove portion 52 of the seat support 26 into the communication recess 55, and are inserted from the rear opening portion of the communication recess 55 to the rear side of the seat support 26. Piping and wiring. Therefore, these horizontal slack portions 58 are installed in a state where they are mounted on the concave groove portion 52 and the communication concave portion 55 of the seat support 26 without being fixed at all.

  These horizontal slack portions 58 are fixed to the communication recess 55 of the seat support 26 by a floor bracket 38 attached to the rear end portion of the communication recess 55 of the seat support 26. Further, these horizontal slack portions 58 are arranged in such a manner that the end side of the seat support 26 protruding from the communication recess 55 of the seat support 26 to the rear side is airtightly held by the airtight seal 40. It is inserted into the through hole 37 of 21 and connected to the control valve in the upper swing body 5.

  Therefore, the change of each connection line group 51 due to the vertical movement due to the height adjustment and jumping up of the seat 23 and the console box 32 is caused by the vertical slack portion 59 on the upper end side from the joint portion 57 of each connection line group 51. The change in each connection line group 51 accompanying the movement in the front-rear direction by the front-rear adjustment of the seat 23 is absorbed by the horizontal slack portion 58 on the lower end side of the joint portion 57 of each connection line group 51. Therefore, the same effects as those of the first embodiment can be achieved.

  Further, the lower end side of each connection line group 51 respectively disposed on both sides of the seat 23 is connected to the rear end side of the communication recess 55 of the seat support 26 from the openings 56 at both ends of the recessed groove portion 52 of the seat support 26. After projecting on the connecting line group 51, the portion located in each opening 56 of the groove 52 of the seat support 26 of each connection line group 51 is fixed to the upper rail 29 of the slide rail 27 by the support bracket 39 as a joint portion 57. These connection line groups 51 can be wired or piped simply by making them. In other words, without connecting or connecting these connection line groups 51 on the seat support 26, these connection line groups 51 are simply placed on the seat support 26 and wired or piped. Since it can be guided and wired or piped, the piping and wiring work of these connection line groups 51 is facilitated, so the workability can be improved.

  Further, the lower end portion of the horizontal slack portion 58 of each connection line group 51 protruding from the rear end of the communication recess 55 of the seat support 26 is inserted into the through hole 37 opened to the rear side of the seat support 26 of the floor 21. Since it is connected to the control valve in the upper swing body 5 later, the seal assembly for maintaining the airtightness in the cab 20 using the airtight seal 40 of the connection line group 51 in the through hole 37 can be facilitated. Therefore, the disposing operation and the assembling operation of these connection line groups 51 can be facilitated, so that the wiring and piping operations of the harness and the pilot hose 35 constituting these connection line groups 51 can be facilitated.

  In the second embodiment, each of the pilot hoses 35 constituting each connection line group 51 is a single hydraulic hose, but the pilot hose 35 is connected to a joint portion 37 using a connector (not shown). Can also be connected. Further, the front convex part 53 and the rear convex part 54 are integrally formed on the seat support 26, but the front convex part 53 and the rear convex part 54 are formed separately from the sheet support 26, and these The front convex portion 53 and the rear convex portion 54 may be attached on the seat support 26 by welding.

  Further, although the recessed groove portion 52 and the communication recessed portion 55 are provided on the seat support 26, respectively, the respective connection line groups 51 can be guided and wired or piped while being guided from both side portions to the rear side of the seat support 26. As long as the configuration is adopted, the groove 52 and the communication recess 55 on the seat support 26 may have any form.

  Furthermore, in the above embodiments, the pilot hose 35 and harness connection line structure of the hydraulic excavator 1 have been described. However, various operations that require operations of working machines other than the hydraulic excavator 1, construction machines, ships, airplanes, etc. Even machines and vehicles can be used correspondingly.

It is an explanatory side view showing a connection line structure of a machine according to a first embodiment of the present invention. It is an explanatory top view which shows a part of connection line structure same as the above. It is a description rear view which shows a part of connection line structure same as the above. It is explanatory side view which shows the machine provided with the connection line structure same as the above. It is explanatory perspective view which shows the connection line structure of 2nd Embodiment of the machine which concerns on this invention. It is a description perspective view which shows a part of connection line structure same as the above. It is explanatory perspective view which shows the supporting member by which a connection line structure same as the above is arrange | positioned.

1 Excavator as machine 6 Work machine body as machine body
19 Front working device as a moving part
23 Seat as a seat
26 Seat support as support member
27 Slide rail as adjustment member
33 Operation lever as operation means
36 First hose as first connection line
38 Floor bracket as the first fixed part
39 Support bracket as second fixed part
41 L-shaped joint as an L-shaped joint as connection means
42 Second hose as second connection line
52 Groove as first recess
55. Communication recess as second recess as recess
58 Horizontal slack as first connection line
59 Vertical slack as second connection line

Claims (9)

A machine connection line structure comprising a machine main body, a movable part movably provided on the machine main body, and an operation means provided on the machine main body so as to be movable in the vertical direction and the front-rear direction. ,
A first connection line portion in a horizontal direction, which is fixed at one end to the machine body and absorbs a change caused by movement of the operation means in the front-rear direction;
One end side is connected to the other end side of the first connection line portion, and the other end side is connected to the operation means, and the second connection line portion in the vertical direction absorbs a change caused by the vertical movement of the operation means. And
The first connection line portion is curved in the horizontal direction,
Connection line structure of the second connecting line section, the machine was characterized in that it is curved in the vertical direction. The machine includes an adjustment member that is attached to the machine body so as to be movable in the front-rear direction, and the operation means is attached so as to be movable in the vertical direction.
A first fixing part for fixing one end side of the first connection line part to the machine body;
First connecting line portion of the other end and the second connecting line section one end of the adjustment member to the second that includes a fixing portion to said claim 1 Symbol placement machine connection line to fix the Construction. A support member having a recess for guiding the first connection line portion and attached between the machine body and the adjustment member;
The machine connection line structure according to claim 2, wherein the first connection line portion is disposed in a recess of the support member. Adjustment with the machine main body having a first recess penetrating along the left-right direction of the machine body and a second recess penetrating from the intermediate part of the first recess to the rear side along the front-rear direction of the machine body Comprising a support member attached between the members,
The machine connection line structure according to claim 2, wherein the first connection line portion is disposed from one end of the first recess of the support member to the rear side of the second recess. Comprising a connecting means for connecting the other end side of the first connection line portion and one end side of the second connection line portion;
The connection means connection line structure of the machine according to claim 2, wherein the device is characterized in that fixed to the second fixing portion. The machine connection line structure according to claim 5 , wherein the connecting means is an L-shaped joint bent into an L-shape. 6. The machine connection line structure according to claim 5 , wherein the connection means is a swivel joint that rotatably connects one end side of the second connection line portion to the other end side of the first connection line portion. The machine connection line structure according to any one of claims 1 to 7 , wherein the machine includes a seat to which operating means is attached and is provided so as to be movable in the vertical direction and the front-rear direction. The machine body,
A movable part movably provided in the machine body;
An operating means provided on the machine body so as to be movable in the vertical direction and the front-rear direction, and operating a movable part;
Claims 1 to 8 characterized by comprising a connecting line structure of the machine according to any one machine.

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