JP5579678B2 - Construction machinery - Google Patents

Description

  The present invention relates to a construction machine such as a hydraulic excavator and a wheel loader, and more particularly to a construction machine equipped with a grease gun used for a greasing operation.

  In general, a hydraulic excavator, which is a representative example of a construction machine, is a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and can be raised and raised on the front side of the upper revolving body. And a working device provided.

  The upper swing body includes a swing frame that forms a support structure, an engine mounted on the rear side of the swing frame, and a cab provided on the left front side of the swing frame so as to follow the left side of the working device. And a driver's seat on which an operator is seated is provided in the cab.

  Further, the revolving frame is provided with a fuel tank that is located on the right side of the working device and stores fuel to be supplied to the engine. On the front side of the fuel tank, articles such as tools, grease guns, and various consumables are usually provided. A tool box is provided to house the.

  On the other hand, a small-swivel hydraulic excavator used in a narrow work site such as an urban area has a substantially circular shape when viewed from above so that the turning radius when turning the upper turning body becomes small. As a result, the upper swing body needs to have a counterweight disposed on the front side to make the entire body compact, so that a space for mounting an engine, a tank, and the like on the swing frame is reduced. Therefore, a large-capacity tool box for storing tools such as a grease gun cannot be installed at the right front portion of the revolving frame, which has been a general tool storage location.

  Therefore, in a conventional hydraulic excavator, a storage box is provided on the side of the driver's seat, and a grease gun is stored in the storage box (see, for example, Patent Document 1). In another conventional hydraulic excavator, a grease gun is held by using a reinforcing member provided between a driver seat (seat mount) on which a driver's seat is mounted and a turning frame (for example, , See Patent Document 2).

JP 2000-64355 A Japanese Patent Laid-Open No. 2002-21118

  By the way, in the hydraulic excavator according to Patent Document 1 described above, since the storage box is provided on the side of the driver's seat, when the grease gun is stored, the smell of grease fills around the driver's seat, and the operator There is a problem that the working environment is impaired due to uncomfortable feeling.

  Further, in the hydraulic excavator according to Patent Document 2 described above, since the grease gun is held on the reinforcing member provided between the driver seat base and the turning frame, the grease gun is exposed to the outside. For this reason, there is a problem that the grease gun is easily damaged by mischief and theft.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to enable a grease gun to be mounted by effectively utilizing a narrow space on the front side of the upper swing body. To provide construction machinery.

The construction machine according to the present invention comprises a lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a work device that is provided so as to be able to move up and down at the front of the upper revolving body. The upper revolving structure includes a revolving frame that forms a support structure, an engine that is mounted horizontally on the rear side of the revolving frame and extends in the left and right directions, and drives a hydraulic pump, and the left and right directions of the engine. a heat exchanger provided on the right side, the left of the revolving frame, the fuel supply and a driver's seat provided on the left side of the right and left of the rotating frame, the disposed to the right of the right direction the engine or a oil storage tank for storing the hydraulic fluid supplied to the hydraulic actuator, and the partition plate is erected on the revolving frame is positioned on the rear side of the oil storage tank for partitioning between the oil storage tank and the heat exchanger, the Oil storage tank and the luck On located on the front side than the partition plate for partitioning between the seat and the inner cover before, extending to the rear direction, and has an upper end formed to be inclined downward toward the front side extends in the downward direction, An outer cover facing the inner cover across the oil storage tank and extending forward from the right end of the partition plate, extending in the front and rear directions covering the outer surface of the oil storage tank, the upper end of the inner cover and the A tank cover that is inclined downward toward the front side along the upper end of the outer cover.

In order to solve the above-mentioned problem, the feature of the configuration adopted by the invention of claim 1 is that the oil storage tank is surrounded by the partition plate, the inner cover, and the outer cover and is opened and closed by the tank cover. forming a tank chamber for accommodating the said the inner cover to the upper position than the oil storage tank to a inner surface which faces the oil storage tank to hold the grease gun to be used for greasing the work to the tank chamber provided grayed Risugan holding member, the grease gun holding member, as the grease gun is the upper end of the inner cover to hold a posture tilted obliquely downward along the slope inclined downward toward the front side It is in the structure to attach.

  According to a second aspect of the present invention, the grease gun includes a cylindrical portion in which grease is accommodated, an injection nozzle that is provided in the cylindrical portion and injects grease into a lubrication target, and the cylindrical portion is provided in the cylindrical portion. And a handle portion that pushes out the grease contained in the injection nozzle side, and the grease gun holding member is a holder portion that grips a cylindrical portion of the grease gun, and is located on the front side of the holder portion and the grease gun A stopper portion that engages with the handle portion, and a nozzle receiving portion that is located in front of and below the stopper portion and that receives the tip of the injection nozzle.

  According to a third aspect of the present invention, a flange portion that is bent toward the oil storage tank side and supports the tank cover is provided at an upper end of the inner cover, and the grease gun is held by the grease gun holding member. Therefore, the inner cover is configured to fit below the flange portion of the inner cover.

According to the invention of claim 1, the grease gun is held by the grease gun holding member provided above the oil storage tank in the inner cover, and is inclined obliquely downward along the downward inclination of the upper end of the inner cover, The grease gun can be accommodated by effectively utilizing the narrow space of the tank chamber where the oil storage tank and various pipes are complicated. The grease gun is held on the inner surface of the inner cover that separates the oil storage tank from the driver's seat, so that the smell of grease does not fill the driver's seat and the operator's working environment for operating the hydraulic excavator Can be kept good. Further, since the grease gun can be covered with a tank cover that covers the outer surface of the oil storage tank, it is possible to reliably prevent mischief and theft of the grease gun.

  According to the second aspect of the invention, the cylinder portion of the grease gun is held by the holder portion of the grease gun holding member, and the handle portion of the grease gun is engaged with the stopper portion of the grease gun holding member. It is possible to prevent the grease gun from falling off the grease gun holding member due to vibration during operation or the like. Further, since the nozzle receiving portion of the grease gun holding member receives the tip of the injection nozzle of the grease gun, even if the grease leaks from the injection nozzle, it can be received by the nozzle receiving portion. As a result, the periphery of the grease gun can always be kept clean and the workability of the greasing work can be improved.

  According to the invention of claim 3, when the grease gun is not correctly attached to the grease gun holding member, a part of the grease gun protrudes above the flange portion of the inner cover and interferes with the tank cover. When the grease gun is correctly installed, the grease gun can be stored below the flange portion of the inner cover. Therefore, by avoiding interference between the grease gun and the tank cover, the grease gun can be attached to an appropriate position of the grease gun holding member.

It is a front view which shows the hydraulic shovel applied to the 1st Embodiment of this invention. It is a front view showing a hydraulic excavator in a state where a tank cover is opened. It is a front view of the principal part expansion which shows the state which removed the tank cover, the outer cover, etc. FIG. 3 is an enlarged front view of an upper swing body showing a swing frame, a hydraulic oil tank, a fuel tank, an inner cover, a grease gun holding member, a grease gun, and the like. FIG. 3 is an external perspective view showing a revolving frame, a hydraulic oil tank, a fuel tank, an inner cover, a grease gun holding member, a grease gun, and the like. It is a disassembled perspective view which shows an inner cover, a grease gun holding member, and a grease gun. It is a perspective view showing a hydraulic excavator in a state where a tank cover is opened. It is a perspective view of the principal part expansion which shows the 1st step of the accommodation procedure of a grease gun. It is a perspective view of the principal part expansion which shows the 2nd step of the accommodation procedure of a grease gun. It is a perspective view of the principal part expansion which shows the 3rd step of the accommodation procedure of a grease gun. It is a perspective view of the principal part expansion which shows the 4th step of the accommodation procedure of a grease gun. It is a front view which shows the hydraulic excavator by 2nd Embodiment in the state which opened the tank cover.

  Hereinafter, as a construction machine according to an embodiment of the present invention, a small hydraulic excavator will be described as an example and described in detail with reference to the accompanying drawings.

  In FIG. 1, reference numeral 1 denotes a hydraulic excavator as a construction machine used for earth and sand excavation work and the like. This hydraulic excavator 1 is a self-propelled crawler-type lower traveling body 2, is rotatably mounted on the lower traveling body 2, and an upper revolving body 3 that forms a traveling body together with the lower traveling body 2, The working device 4 is configured roughly on the front side of the upper swing body 3 so as to be movable up and down.

  Here, as shown in FIG. 7, the upper swing body 3 has a width dimension in the left and right directions substantially equal to the vehicle width of the lower traveling body 2 and is formed in a substantially circular shape when viewed from above. As a result, the hydraulic excavator 1 is a rear small-turn hydraulic excavator in which the rear surface of a counterweight 11 (described later) is substantially within the vehicle width of the lower traveling body 2 when the upper swinging body 3 is swung on the lower traveling body 2. It is configured as. The upper swing body 3 is generally composed of a swing frame 5, an engine 6, a cab 10, a counterweight 11, a fuel tank 12, a hydraulic oil tank 13, and the like, which will be described later.

  Reference numeral 5 denotes a turning frame as a support structure. As shown in FIG. 5, the revolving frame 5 is provided with a thick bottom plate 5A extending in the front and rear directions, and standing on the bottom plate 5A, and extends in the front and rear directions with a predetermined interval in the left and right directions. The left vertical plate 5B, the right vertical plate 5C, the support bracket 5D that is provided at the front end of each of the vertical plates 5B, 5C, and supports the working device 4, and is located on the front end side and extends left and right. It is roughly constituted by the front beam 5E and the like.

  Reference numeral 6 denotes an engine (see FIG. 1) mounted on the rear side of the revolving frame 5. The engine 6 drives a hydraulic pump (not shown). Here, the engine 6 is configured as a diesel engine, and is mounted on the turning frame 5 in a horizontally placed state extending in the left and right directions. A heat exchanger 7 such as a radiator or an oil cooler is disposed on the right side of the engine 6.

  Reference numeral 8 denotes a driver seat provided on one side (left side) of the left and right directions of the turning frame 5. The driver's seat 8 is for an operator to sit on. An operation device such as an operation lever 9 is provided around the driver seat 8, and the driver seat 8 and various operation devices are covered with a cab 10.

  Reference numeral 11 denotes a counterweight attached to the rear end portion of the revolving frame 5, and the counterweight 11 balances the weight with the work device 4. Here, the hydraulic excavator 1 is formed as a rear small turning type hydraulic excavator in which the turning radius of the rear surface of the counterweight 11 is reduced. For this reason, the counterweight 11 is disposed close to the turning center of the upper turning body 3.

  Reference numeral 12 denotes a fuel tank as an oil storage tank disposed on the left side and the other side (right side) in the left and right directions on the front side of the revolving frame 5, and the fuel tank 12 stores fuel supplied to the engine 6. is there. The fuel tank 12 is formed as a rectangular parallelepiped pressure-resistant tank that is surrounded by the front surface 12A, the rear surface 12B, the left side surface, the right side surface 12C, the upper surface 12D, and the lower surface 12E and extends downward. Further, a fuel filler opening 12 </ b> F is provided on the upper surface 12 </ b> D of the fuel tank 12.

  Reference numeral 13 denotes a hydraulic oil tank as an oil storage tank disposed on the front side of the revolving frame 5 on the left and right sides (right side). The hydraulic oil tank 13 supplies hydraulic oil supplied to a hydraulic actuator. It is something to store. The hydraulic oil tank 13 is disposed adjacent to the rear side of the fuel tank 12, and is surrounded by a front surface 13A, a rear surface 13B, a left side surface, a right side surface 13C, an upper surface 13D, and a lower surface 13E and extends downward and upward. It is formed as a pressure-resistant tank.

  Reference numeral 14 denotes a partition plate which is positioned on the rear side of the hydraulic oil tank 13 and is erected on the revolving frame 5. The partition plate 14 is disposed between the hydraulic oil tank 13 and the heat exchanger 7 in the upward and downward directions. It extends and partitions between the two. The partition plate 14 shields the heat of the hydraulic oil tank 13 from the heat exchanger 7.

Reference numeral 15 denotes an inner cover provided on the turning frame 5 for partitioning the fuel tank 12 and the hydraulic oil tank 13 from the driver's seat 8. As shown in FIGS. 5, 7, etc. , the inner cover 15 is located on the front side of the partition plate 14 , extends upward and downward, and extends in the front and rear directions, and its upper end gradually increases toward the front side. Inclined downward. The inner cover 15 is erected on the revolving frame 5 and faces the right side surface 10A of the cab 10 with a slight gap as shown in FIG. Further, a flange portion 15A bent toward the fuel tank 12 and the hydraulic oil tank 13 side is provided at the upper end of the inner cover 15, and a tank cover 18 described later is supported by the flange portion 15A. Yes. A grease gun holding member 20 described later is provided at an upper position of the inner surface 15B of the inner cover 15 facing the fuel tank 12 and the hydraulic oil tank 13.

  Reference numeral 16 denotes an outer cover that forms the right side surface of the upper swing body 3, and the outer cover 16 faces the inner cover 15 with the fuel tank 12 and the hydraulic oil tank 13 interposed therebetween. The outer cover 16 is formed in a convex curve shape along the revolving frame 5 and extends from the right end portion of the partition plate 14 to the front end portion of the cab 10 so that the fuel tank 12 and the hydraulic oil tank 13 are connected to the right side. Covering from.

  Reference numeral 17 denotes a tank chamber that houses the fuel tank 12 and the hydraulic oil tank 13. The tank chamber 17 is surrounded by the partition plate 14, the inner cover 15, the outer cover 16, and the like, and is opened and closed by a tank cover 18 described later.

  Reference numeral 18 denotes a tank cover that covers the outer surfaces of the fuel tank 12 and the hydraulic oil tank 13. The tank cover 18 is disposed between the upper end of the inner cover 15 and the upper end of the outer cover 16, and extends forward and rearward from the partition plate 14 to the front end portion of the outer cover 16. The upper surface 18B of the tank cover 18 is disposed so as to be gradually inclined downward toward the front side along the upper end of the inner cover 15.

  The rear end side of the tank cover 18 is supported by the revolving frame 5 via a hinge member (not shown). The tank cover 18 is in an open position (see FIG. 5) for opening the tank chamber 17 around the hinge member. 2) and a closed position (position in FIG. 1). The tank chamber 17 is opened to supply fuel to the fuel tank 12 and the hydraulic oil tank 13. Here, the tank cover 18 is formed in an arc shape that is inclined downward from the rear side toward the front side along the upper end of the inner cover 15. As a result, the operator seated in the driver's seat can ensure a wide right front view and improve workability. On the other hand, on the front end side of the tank cover 18, a concave handle portion 18 </ b> A is provided on which an operator catches a hand when the tank cover 18 is opened and closed. The handle portion 18A is provided with a key portion (not shown) so that the tank cover 18 can be locked in the closed position.

  Reference numeral 19 denotes a grease gun for supplying grease to a greasing part of the working device 4 or the like. As shown in FIG. 6 and the like, the grease gun 19 includes a cylindrical portion 19A in which grease is accommodated, an injection nozzle 19B that is provided at a tip portion of the cylindrical portion 19A and injects grease into an object to be lubricated, The handle portion 19C is provided in the portion 19A and pushes the grease contained in the cylinder portion 19A to the injection nozzle 19B side. Here, the handle portion 19C has a fulcrum 19C1 on the distal end side of the cylindrical portion 19A, and the free end 19C2 side of the handle portion 19C is rotated around the fulcrum 19C1 in a direction away from and closer to the cylindrical portion 19A. Can do. When the operator supplies grease to the greasing part such as the work device 4, the tip 19B1 of the injection nozzle 19B is fitted into the greasing part, and the handle part 19C is turned away from the cylinder part 19A. The grease is introduced into the injection nozzle 19B by being moved, and the introduced grease is discharged from the tip 19B1 of the injection nozzle 19B to the greasing portion by rotating the handle portion 19C in a direction approaching the cylinder portion 19A. Is.

  Reference numeral 20 denotes a grease gun holding member provided on the inner surface 15B side of the inner cover 15 facing the fuel tank 12 and the hydraulic oil tank 13. The grease gun holding member 20 is disposed above the fuel tank 12 and the hydraulic oil tank 13 in the inner surface 15B of the inner cover 15, and the grease gun 19 is inclined obliquely downward along the downward inclination of the upper end of the inner cover 15. Mounted to hold at an angle. Here, as shown in FIG. 6 and the like, the grease gun holding member 20 is roughly constituted by a holder part 21, a stopper part 23, and a nozzle receiving part 24, which will be described later.

  Reference numeral 21 denotes a holder portion that holds the cylindrical portion 19 </ b> A of the grease gun 19. The holder portion 21 is attached to the inner surface 15B of the inner cover 15 using bolts 22 and is attached to the upper portion of the fuel tank 12 and the hydraulic oil tank 13 from the upper end side of the attachment portion 21A. The supporting portion 21B extending in a substantially L shape and a plate body bent into a substantially U shape, and roughly constituted by two gripping portions 21D attached to the supporting portion 21B using bolts 21C, The cylinder portion 19A of the grease gun 19 is detachably held by the grip portion 21D.

  Here, in the tank chamber 17 in which the grease gun holding member 20 is disposed, various pipes and the like are disposed in addition to the fuel tank 12 and the hydraulic oil tank 13, and a tank that blocks the upper portion of the tank chamber 17. The upper surface 18B of the cover 18 is formed in an arc shape from the rear to the front lower side in order to ensure the visibility of the operator seated in the driver's seat 8 to the front right side. For this reason, the inside of the tank chamber 17 is a narrow space.

  Therefore, the attachment portion 21 </ b> A of the holder portion 21 is fixed to the inner surface 15 </ b> B of the inner cover 15 by the bolt 22 in a state of being inclined obliquely downward toward the front along the upper end of the inner cover 15. As a result, when the grease gun 19 is fixed to the grip portion 21D of the holder portion 21, the grease gun 19 is held obliquely downward along the downward inclination of the upper end of the inner cover 15, and the tank chamber 17 is narrowed. The grease gun 19 can be efficiently stored in a small space.

  Reference numeral 23 denotes a stopper provided on the inner surface 15B of the inner cover 15 located on the front side of the holder portion 21, and the stopper 23 is engaged with the handle portion 19C of the grease gun 19. Here, the stopper portion 23 is formed by bending a thin plate material, and an attachment portion 23A attached by a bolt or the like to a corner portion where the flange portion 15A and the inner surface 15B of the inner cover 15 intersect, A drop-out restricting piece 23B extending from the mounting portion 23A toward the upper side of the fuel tank 12 and the hydraulic oil tank 13, and a rotation restricting piece 23C extending from the tip side of the drop-out restricting piece 23B toward the holder portion 21. It is comprised by. When the grease gun 19 is held by the gripping portions 21D of the holder portion 21, as described above, the grease gun 19 is held in a posture inclined obliquely downward toward the front. Since the portion 23 engages with the handle portion 19C of the grease gun 19, the grease gun 19 is prevented from falling off the holder portion 21, and the grease gun 19 can be securely held.

  Further, the stopper portion 23 positions the grease gun 19 with respect to the holder portion 21. That is, when the fulcrum 19C1 side provided on the handle portion 19C of the grease gun 19 is engaged with the stopper portion 23, the free end 19C2 side of the handle portion 19C is located below the flange portion 15A of the inner cover 15. It is configured to be stored. Specifically, the drop-out restricting piece 23B and the rotation restricting piece 23C of the stopper portion 23 are formed in a substantially L shape, and the turn restricting piece 23C contacts the side surface of the handle portion 19C of the grease gun 19. In this way, it is bent from the tip end side of the drop-off restricting piece 23B. Accordingly, when the fulcrum 19C1 provided on the handle portion 19C of the grease gun 19 is engaged with the stopper portion 23, the free end 19C2 side of the handle portion 19C inevitably fits below the flange portion 15A of the inner cover 15. become.

  Thereby, when the tank cover 18 is set to the closed position, the tank cover 18 can be supported by the flange portion 15A of the inner cover 15, so that the interference between the inner cover 15 and the grease gun 19 can be prevented. Further, the handle portion 19C of the grease gun 19 is fixed by being pressed against the lower surface of the flange portion 15A provided on the inner cover 15, so that the handle portion 19C is unnecessary due to vibration during the operation of the hydraulic excavator 1. The rotation can be restricted, and inadvertent discharge of grease when the grease gun 19 is stored can be prevented.

  Reference numeral 24 denotes a nozzle receiving portion provided on the inner surface 15B of the inner cover 15 so as to be positioned in front of the stopper portion 23. The nozzle receiving portion 24 has a distal end portion 19B1 of an injection nozzle 19B provided in the grease gun 19. It is what you receive. Here, the nozzle receiving portion 24 includes an attachment portion 24A attached to the inner surface 15B of the inner cover 15 with a bolt or the like, and a receiving tray 24B extending from the inner cover 15 toward the upper side of the fuel tank 12 and the hydraulic oil tank 13. It is configured. The tray 24B is surrounded by a front surface 24B1, a rear surface 24B2, a left side surface 24B3, a right side surface 24B4, and a lower surface 24B5, and has a box shape with the upper side opened. The nozzle receiving portion 24 is disposed so that the tip 19B1 of the injection nozzle 19B is located above the tray 24B of the nozzle receiving portion 24 with the grease gun 19 held by the holder portion 21. is there. Thereby, even if grease leaks from the tip 19B1 of the injection nozzle 19B, the inside of the tank chamber 17 can be kept clean by receiving the leaked grease by the tray 24B of the nozzle receiving portion 24. It has become.

  The hydraulic excavator 1 according to the first embodiment has the above-described configuration. Next, the operation thereof will be described.

  First, the operator gets on the cab 10, starts the engine 6, and drives a hydraulic pump (not shown). Then, by operating a traveling lever (not shown) or the like, the lower traveling body 2 is moved forward or backward, and by operating the operation lever 9, the working device 4 is moved up and down to excavate earth and sand. It can be performed.

  Here, as a maintenance work for the hydraulic excavator 1, when grease is supplied to the grease supply site of the working device 4, the tip 19 B 1 of the injection nozzle 19 B of the grease gun 19 is fitted into the grease supply site, and the grease gun 19 The handle portion 19C is rotated away from the cylinder portion 19A. As a result, the grease contained in the cylindrical portion 19A of the grease gun 19 is introduced into the injection nozzle 19B, and the handle introduced into the injection nozzle 19B is rotated by rotating the handle portion 19C toward the cylindrical portion 19A. The grease is discharged from the tip 19B1 of the nozzle 19B, and grease can be supplied to the grease supply portion of the work device 4.

  After the greasing operation is completed, the tank cover 18 is moved to the open position, and the grease gun 19 is accommodated in the tank chamber 17.

  In this case, the tank chamber 17 is a narrow space in which the fuel tank 12, the hydraulic oil tank 13, various pipes, and the like are mixed. Therefore, in the present embodiment, the grease gun holding member 20 is provided on the inner surface 15B of the inner cover 15 above the fuel tank 12 and the hydraulic oil tank 13, and the grease gun 19 is held by the grease gun holding member 20. doing. As a result, the grease gun 19 can be held in a posture inclined obliquely downward along the downward inclination of the upper end of the inner cover 15, while narrowly narrowing the fuel tank 12, the hydraulic oil tank 13, and various pipes. The grease gun 19 can be accommodated in a compact tank chamber 17.

  Next, the procedure for housing the grease gun 19 in the tank chamber 17 will be described with reference to FIGS. 8 to 11, the tank cover 18 is omitted.

  First, as shown in FIG. 7, the tank cover 18 is moved to the open position, and the tank chamber 17 is opened. Then, the cylindrical portion 19 </ b> A of the grease gun 19 is fitted into each gripping portion 21 </ b> D of the holder portion 21 that constitutes the grease gun holding member 20 provided on the inner cover 15. Two gripping portions 21D are provided in the longitudinal direction of the cylindrical portion 19A of the grease gun 19, and the upper portion is open. Thereby, the grease gun 19 can be stably held, and the grease gun 19 can be easily attached and detached.

  Here, in a state where the grease gun 19 is fitted in each gripping portion 21D of the holder portion 21 (state shown in FIG. 9), the handle portion 19C of the grease gun 19 protrudes above the flange portion 15A of the inner cover 15, and the tank When the cover 18 is moved to the closed position, the handle portion 19C of the grease gun 19 interferes with the tank cover 18 so that the tank cover 18 is not closed.

  Therefore, as shown in FIG. 9, the grease gun 19 held by each gripping portion 21D of the holder portion 21 is rotated in the direction of arrow A, and the handle portion 19C of the grease gun 19 is moved under the flange portion 15A of the inner cover 15. Move so that it is on the side. As a result, the entire grease gun 19 can be stored below the flange portion 15 </ b> A of the inner cover 15. Next, as shown in FIG. 10, the grease gun 19 is moved in the direction of arrow B along the holder portion 21. As a result, the grease gun 19 slides diagonally downward until the fulcrum 19C1 of the handle portion 19C contacts the drop-off restricting piece 23B of the stopper 23, and the fulcrum 19C1 contacts the drop-off restricting piece 23B as shown in FIG. At the same time, the side surface of the handle portion 19 </ b> C is positioned at a position in contact with the rotation restricting piece 23 </ b> C of the stopper portion 23. Thereby, even when the grease gun 19 is held obliquely downward along the downward inclination of the inner cover 15, the grease gun 19 can be controlled to move obliquely downward by the drop-off restricting piece 23B of the stopper portion 23. The grease gun 19 can be reliably held by the holder portion 21.

  Further, since the rotation restricting piece 23C of the stopper portion 23 is in contact with the side surface of the handle portion 19C of the grease gun 19, it is possible to prevent the grease gun 19 from rotating. As shown in FIG. 11, the free end 19 </ b> C <b> 2 side of the handle portion 19 </ b> C of the grease gun 19 is accommodated in contact with the lower surface of the flange portion 15 </ b> A of the inner cover 15. Thereby, since the upward rotation of the handle portion 19C is restricted, it is possible to prevent unnecessary grease from being extracted from the grease gun 19 due to vibration during the operation of the hydraulic excavator 1 or the like.

  Furthermore, the tip 19B1 of the injection nozzle 19B of the grease gun 19 can be positioned on the tray 24B of the nozzle receiver 24. As a result, even if the grease leaks from the injection nozzle 19B of the grease gun 19, the leaked grease can be received by the receiving tray 24B of the nozzle receiving portion 24, so that the tank chamber 17 is soiled by the leaked grease. The tank chamber 17 can be kept clean.

  In this way, the grease gun 19 is held by the grease gun holding member 20 provided on the inner cover 15, and the entire grease gun 19 is stored below the flange portion 15 </ b> A of the inner cover 15. The tank chamber 17 can be reliably closed by moving to the closed position.

  In this case, a handle 18A is provided on the front side of the tank cover 18 to be gripped by an operator when the tank cover 18 is opened and closed. The handle 18A locks the tank cover 18 in a closed position. A key part is provided. As a result, only a specific person can open the tank cover 18, so that the theft and mischief of the grease gun 19 accommodated in the tank chamber 17 can be reliably prevented.

  Thus, according to the first embodiment, by providing the grease gun holding member 20 on the inner surface 15B of the inner cover 15 above the fuel tank 12 and the hydraulic oil tank 13, the grease gun holding member 20 The grease gun 19 can be held in a posture inclined obliquely downward along the upper end of the inner cover 15. As a result, the grease gun 19 can be accommodated compactly in the narrow tank chamber 17 where the fuel tank 12, the hydraulic oil tank 13, various pipes and the like are complicated.

  In this case, the grease gun holding member 20 is provided on the inner surface 15B side opposite to the driver seat 8 in the inner cover 15 that partitions the driver seat 8 from the fuel tank 12 and the hydraulic oil tank 13. For this reason, even when the grease gun 19 is held on the grease gun holding member 20, the smell of grease does not fill around the driver's seat 8, and the working environment of the operator who operates the excavator 1 can be kept good. it can. Further, by locking the tank cover 18 that covers the tank chamber 17, it is possible to prevent the grease gun 19 from being stolen or mischievous.

  Next, FIG. 12 shows a second embodiment of the present invention. The feature of this embodiment is that the opening / closing fulcrum of the tank cover is provided on the front side and the tank cover is opened and closed in the forward and backward directions. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  Reference numeral 31 denotes a tank cover according to the second embodiment used in place of the tank cover 18 according to the first embodiment. Similar to the tank cover 18 according to the first embodiment, the tank cover 31 covers the outer surfaces of the fuel tank 12 and the hydraulic oil tank 13 and extends in the front and rear directions, and extends forward along the upper end of the inner cover 15. It is arranged so as to be inclined downward toward the part side.

  Here, an opening / closing fulcrum (not shown) is provided below the front end of the tank cover 31, and the tank cover 31 pivots forward and backward about the opening / closing fulcrum, thereby opening the tank chamber 17. Open and close. Further, a recessed handle portion 31A is provided on the rear side of the tank cover 31, and a key portion (not shown) is provided on the handle portion 31A so that the tank cover 31 can be locked in the closed position. Yes.

  The second embodiment includes the tank cover 31 as described above, and also in the present embodiment, the fuel tank 12 and the hydraulic oil tank on the inner surface 15B of the inner cover 15 as in the first embodiment. The grease gun holding member 20 is provided above the position 13. Accordingly, the grease gun 19 can be held obliquely downward along the downward inclination of the upper end of the inner cover 15.

  As a result, the grease gun 19 can be compactly accommodated in the narrow tank chamber 17 where the fuel tank 12, the hydraulic oil tank 13, various pipes and the like are complicated, as in the first embodiment. In addition, the smell of grease does not fill around the operator seated on the driver's seat 8, and the operator's working environment can be kept good. Furthermore, since the tank cover 31 can be locked in the closed position, the theft and mischief of the grease gun 19 accommodated in the tank chamber 17 can be prevented.

  In the first embodiment described above, the case where the tank cover 18 can be opened and closed between the upper end of the inner cover 15 and the upper end of the outer cover 16 is illustrated. However, the present invention is not limited to this. For example, a large tank cover in which the outer cover 16 and the tank cover 18 are integrated may be formed. The same applies to the second embodiment.

  In each embodiment, the cab-type hydraulic excavator 1 is described as an example of the construction machine. However, the present invention is not limited to this, and may be applied to a canopy hydraulic excavator. Besides, it can be widely applied to other construction machines such as a wheeled hydraulic excavator.

1 Excavator (construction machine)
2 Lower traveling body 3 Upper revolving body 5 Revolving frame (support structure)
6 Engine 8 Driver's seat 12 Fuel tank (oil storage tank)
13 Hydraulic oil tank (oil storage tank)
DESCRIPTION OF SYMBOLS 15 Inner cover 15A Flange part 17 Tank chamber 18, 31 Tank cover 19 Grease gun 19A Tube part 19B Injection nozzle 19C Handle part 20 Grease gun holding member 21 Holder part 23 Stopper part 24 Nozzle receiving part

Claims (3)

A lower traveling body, an upper revolving body mounted on the lower traveling body so as to be able to swivel, and a work device provided at the front of the upper revolving body so as to be able to be lifted and lowered,
The upper revolving structure includes a revolving frame that forms a support structure, an engine that is mounted horizontally on the rear side of the revolving frame and extends in the left and right directions, and drives a hydraulic pump, and the left and right directions of the engine. a heat exchanger provided on the right side, the left of the revolving frame, the fuel supply and a driver's seat provided on the left side of the right and left of the rotating frame, the disposed to the right of the right direction the engine or a oil storage tank for storing the hydraulic fluid supplied to the hydraulic actuator, and the partition plate is erected on the revolving frame is positioned on the rear side of the oil storage tank for partitioning between the oil storage tank and the heat exchanger, the In order to partition between the oil storage tank and the driver's seat, it is located on the front side of the partition plate , extends upward and downward, extends forward and rearward, and has an upper end inclined downward toward the front side. Innaka Over a, the outer cover that extends forward from the right end of the across the oil storage tank facing the inner cover said partition plate, before covering the outer surface of the oil storage tank, extends in the rear direction, of the inner cover In a construction machine comprising an upper end and a tank cover arranged to be inclined downward toward the front side along the upper end of the outer cover,
Surrounded by the partition plate, the inner cover and the outer cover and opened and closed by the tank cover to form a tank chamber for accommodating the oil storage tank;
Wherein the inner cover is provided with a grayed Risugan holding member in the upper position than the oil storage tank to a inner surface which faces the oil storage tank to hold the grease gun to be used for greasing the work to the tank chamber,
The grease gun holding member, characterized in that the grease gun is the upper end of the inner cover was attached to maintain the attitude inclined obliquely downward along the slope inclined downward configuration frontward And construction machinery. The grease gun includes a cylindrical portion in which grease is accommodated, an injection nozzle that is provided in the cylindrical portion and injects grease into a lubrication target, and injects grease that is provided in the cylindrical portion and accommodated in the cylindrical portion. It consists of a handle part that pushes out to the nozzle side,
The grease gun holding member includes a holder portion that grips the cylindrical portion of the grease gun, a stopper portion that is positioned in front of the holder portion and engages with a handle portion of the grease gun, and in front of the stopper portion. The construction machine according to claim 1, further comprising a nozzle receiving portion positioned on the lower side and receiving a tip of the injection nozzle. At the upper end of the inner cover, a flange portion that is bent toward the oil storage tank side and supports the tank cover is provided,
3. The construction machine according to claim 1, wherein the grease gun is configured to be stored below a flange portion of the inner cover in a state of being held by the grease gun holding member.

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