JP7052661B2 - Piping structure for construction machinery and transformer lifters - Google Patents

Description

The present invention relates to a construction machine to which a transformer lifter can be attached.

Conventionally, a method for removing a crawler by lifting an upper swing body by using a jack-up device and removing the crawler from the lower traveling body has been proposed (see, for example, Patent Document 1).

In Patent Document 1, the upper swivel body (3) is swiveled so that the front-rear direction of the upper swivel body (3) is orthogonal to the longitudinal direction of the crawler (23a, 23b), and then the tip of the main boom (4) is formed. The jack-up portion (5) is attached, the jack-up portion (6) is attached to the rear portion of the upper swing body (3), and then the dismantling machine (1) is jacked up. Next, after removing the crawler (23a) on the jack-up (5) side and temporarily placing it, the lower traveling body (2) is turned so that the crawler (23b) on the opposite side is arranged on the jack-up (5) side. Then, the crawler (23b) is removed and temporarily placed.

As described above, in Patent Document 1, the lower traveling body (2) is swiveled in the crawler removal work.

Further, as another invention, there is a device in which a hydraulic pipe output from the inside of a car body of a lower traveling body is connected to a jack-up device and used as a drive source (see, for example, Patent Document 2). Specifically, in Patent Document 2, the pipe (62) output from the inside of the car body of the lower traveling body is connected to the first jack-up cylinder (51) and the second jack-up cylinder (81). There is.

Japanese Unexamined Patent Publication No. 2014-240574 Japanese Unexamined Patent Publication No. 2017-141075

By applying the technique of Patent Document 2 to the technique of Patent Document 1, it is possible to use the hydraulic piping output from the inside of the car body as a drive source of the transformer lifter device (jack-up device).

However, in Patent Document 1, since the lower traveling body turns in the crawler removal work, if the invention described in Patent Document 2 is applied as it is, the hydraulic pipe may be caught and damaged when the lower traveling body turns. be.

Therefore, an object of the present invention is to provide a technique capable of preventing the hydraulic pipe from being caught when the lower traveling body is turned when the hydraulic pipe of the construction machine is used as a drive source of the transformer lifter device.

In order to achieve the above object, the present invention is a construction machine, in which an upper frame, a main boom mounted on the upper frame, and a plurality of hydraulic pipes allocated to the main boom are provided. A front transformer lifter is attached to the tip of the main boom, a rear transformer lifter is attached to the rear end of the upper frame, and the front transformer is attached to one of the plurality of hydraulic pipes. A supply pipe for supplying hydraulic oil is connected to the lifter and the rear transformer lifter, and the supply pipe has a first supply pipe for supplying the hydraulic oil to the front transformer lifter and the hydraulic oil by means of a regulating valve. A construction machine is provided which is branched into a second supply pipe for supplying to the rear transformer lifter, and the supply pipe is arranged sideways to the upper frame and the main boom.

Further, the supply pipe is arranged between the front area allocated between the front transformer lifter and the front end side of the upper frame, and between the front end side of the upper frame and the rear end side of the upper frame. The center region is divided into a rear region to be arranged between the rear end side of the upper frame and the rear transformer lifter, and the front region has one end connected to the front transformer lifter and the like. It is preferred that the ends are routed along a fixed link that secures the movement of the main boom by being connected to the upper frame, and the center region is routed along the sides of the upper frame.

Further, a plurality of pipes arranged in the center area are held in a bundled state by a pipe clamp, and a pipe support bracket to which the pipe clamp can be attached is fixed to a side portion of the upper frame. Is preferable.

Further, the pipe support bracket is formed with a notch in which the pipe clamp can be inserted and removed in the wiring direction of the supply pipe, and the pipe clamp attached to the pipe support bracket has the pipe support bracket. It is preferable to provide a retaining member for preventing disconnection from the notch by abutting.

Further, it is preferable that the retaining member is configured as a plate-shaped retaining plate, and the retaining plate is connected to the pipe support bracket and to the pipe clamp.

Further, in the present invention, a front transformer lifter is attached to the tip of the main boom attached to the upper frame of the construction machine, and a rear transformer lifter is attached to the rear end of the upper frame. A supply pipe for supplying hydraulic oil to the front transformer lifter and the rear transformer lifter is connected to one of the plurality of hydraulic pipes arranged at the tip of the pipe, and the supply pipe is a regulating valve. Branches into a first supply pipe that supplies the hydraulic oil to the front transformer lifter and a second supply pipe that supplies the hydraulic oil to the rear transformer lifter, and the supply pipe is the upper frame and the main. Further provided is a piping structure for a translifter device characterized by being routed to the side of the boom.

According to the present invention, a supply pipe for supplying hydraulic oil to the front transformer lifter and the rear transformer lifter is connected to one of the plurality of hydraulic pipes arranged in the main boom. Further, the supply pipe is branched into a first supply pipe that supplies the hydraulic oil to the front transformer lifter and a second supply pipe that supplies the hydraulic oil to the rear transformer lifter by a regulating valve. Then, the supply pipe is arranged on the side of the upper frame and the main boom. Therefore, the piping configuration of the supply pipe is completely independent of the lower traveling body, and is completed by the upper swivel body including the main boom. Therefore, when the hydraulic pipe of the construction machine is used as the drive source of the transformer lifter device, it is possible to prevent the hydraulic pipe from being caught in the turning of the lower traveling body.

A perspective view showing a part of a dismantling machine equipped with a transformer lifter device. Sectional drawing taken at the position II-II of FIG. FIG. 3 taken from arrow III in FIG. Schematic diagram for explaining a fixed link that secures the movement of the main boom. The figure which shows the hose support unit. A side view showing a tube arranged under the left end of the upper frame. Enlarged view of the periphery of the piping support unit. The perspective view which shows the piping support bracket. The figure which shows the piping clamp. The figure which shows the state which attached the piping clamp to the piping support bracket. XI arrow view of FIG. 7. The perspective view which shows the pipe support bracket which concerns on a modification.

<1. Embodiment>
The construction machine according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11. Hereinafter, as an example of a construction machine, the dismantling machine 10 shown in FIG. 1 will be illustrated.

In FIG. 1, for simplification of explanation, the upper frame 1 constituting a part of the upper swing body and the main boom 2 rotatably mounted on the upper frame 1 of the dismantling machine 10 are shown. ing. Further, in FIG. 1, the front-rear direction of the dismantling machine 10 is defined with the tip end side of the main boom 2 as the “front side” and the rear end side of the upper frame 1 as the “rear side”.

As shown in FIG. 1, the upper frame 1 includes a pair of left and right vertical plates 11 to which a boom foot pin 110 can be mounted.

The main boom 2 is rotatably (undulated) connected to the upper frame 1 via a boom foot pin 110 mounted on the vertical plate 11.

The tip of the main boom cylinder 21 that drives the main boom 2 is connected to the main boom 2. The base end portion of the main boom cylinder 21 is connected to the upper frame 1.

Further, the dismantling machine 10 is equipped with a transformer lifter device (also referred to as a jack-up device). The dismantling machine 10 is lifted by this transformer lifter device, and the crawler is removed from the lower traveling body.

The transformer lifter device includes a front transformer lifter 3 attached to the tip of the main boom 2 and a rear transformer lifter 4 attached to the rear end of the upper frame 1.

The front transformer lifter 3 includes a support member 31 that supports the tip of the main boom 2, and two jack-up cylinders 33L and 33R (see FIGS. 1 and 2) that are mounted on the left and right ends of the support member 31. It is composed.

The rear transformer lifter 4 includes a support member 41 that supports the rear end of the upper frame 1 and two jack-up cylinders 43L and 43R (see FIGS. 1 and 3) that are mounted on the left and right ends of the support member 41. It is composed of.

As shown in FIG. 1, a plurality of hydraulic pipes 23 are arranged at the tip of the main boom 2. The plurality of hydraulic pipes 23 are pipes for supplying hydraulic oil to each part such as an arm, a jib, a bucket, and a nibbler (crusher) (not shown). Each hydraulic source of the plurality of hydraulic pipes 23 is configured to be switchable by a switch (appropriately arranged inside and outside the cab) (not shown).

In the present embodiment, as an example, one of the plurality of hydraulic pipes 23, which is not used (nibbler pipe), is used as the hydraulic source of the above-mentioned transformer lifter device.

The supply pipe 5 is connected to one of the plurality of hydraulic pipes 23 that is not used. The supply pipe 5 is a hydraulic pipe for supplying hydraulic oil to each cylinder (jack-up cylinders 33L, 33R on the front side and jack-up cylinders 43L, 43R on the rear side) provided in the transformer lifter device.

As shown in FIG. 1, the supply pipe 5 is routed rearward through the lower side of the main boom cylinder 21 and bends toward the left end side of the upper frame 1 near the front end of the upper frame 1. After that, the supply pipe 5 is routed rearward through the lower left end of the upper frame 1 and is connected to the control valve 6.

The control valve 6 is an adjustment valve for branching the supply pipe 5, and is attached to the support member 41 of the rear transformer lifter 4.

The supply pipe 5 branches into the supply pipe 53 and the supply pipe 54 via the control valve 6.

The supply pipe 53 is a hydraulic pipe for supplying hydraulic oil to the jack-up cylinders 33L and 33R of the front transformer lifter 3, and is an example of the first supply pipe according to the present invention.

The supply pipe 54 is a hydraulic pipe for supplying hydraulic oil to the jack-up cylinders 43L and 43R of the rear transformer lifter 4, and is an example of the second supply pipe according to the present invention.

Since the supply pipes 53 and 54 are a part of the supply pipe 5, they are also referred to as "the supply pipe 5 after branching" in the present specification. On the other hand, the supply pipe 5 before branching to the supply pipes 53 and 54 (the pipe before connecting to the control valve 6) is also referred to as "supply pipe 5 before branching" in the present specification.

As shown in FIG. 1, the supply pipe 53 (a part of the supply pipe 5 after branching) is routed forward from the control valve 6 toward the front jack-up cylinders 33L and 33R. At that time, the supply pipe 53 is routed through the same route as the supply pipe 5 before branching. The supply pipe 53 is configured as a plurality of hydraulic pipes instead of one.

The hydraulic oil passing through the supply pipe 5 before branching flows from the front side to the rear side toward the control valve 6 from one pipe arranged in the main boom 2. On the other hand, the hydraulic oil passing through the supply pipe 53 (a part of the supply pipe 5 after branching) flows from the rear side to the front side from the control valve 6 toward the jack-up cylinders 33L and 33R. In this way, the directions in which the hydraulic oil flows are opposite between the supply pipe 5 and the supply pipe 53 before branching.

As shown in FIG. 2, the supply pipe 53 arranged to the side (front side) of the front transformer lifter 3 is further branched into the supply pipe 53L and the supply pipe 53R via the branch unit 35.

The supply pipe 53L is connected to a jack-up cylinder 33L arranged on the left side of the support member 31. The supply pipe 53R is connected to a jack-up cylinder 33R arranged on the right side of the support member 31. With such a configuration, hydraulic oil is supplied to the left and right jack-up cylinders 33L and 33R of the front transformer lifter 3.

As shown in FIG. 3, the supply pipe 54 branches into the supply pipes 54L and 54R at the time of output from the control valve 6. The supply pipe 54L is connected to a jack-up cylinder 43L arranged on the left side of the support member 41. The supply pipe 54R is connected to a jack-up cylinder 43R arranged on the right side of the support member 41. As a result, hydraulic oil is supplied to the left and right jack-up cylinders 43L and 43R of the rear transformer lifter 4.

The control valve 6 is provided with a plurality of levers on which the operator can manually operate the hydraulic oil supplied to the front jack-up cylinders 33L and 33R and the rear jack-up cylinders 43L and 43R. By operating these levers by the operator, the jack-up cylinders 33L, 33R, 43L, and 43R are operated.

Refer to FIG. 1 again. A part of the supply pipe 5 before branching and the supply pipe 5 after branching (supply pipe 53) distributed between the front transformer lifter 3 and the rear transformer lifter 4 are the front area FA, the center area CA, and the rear area. It is configured to be divisible into three RAs.

The front area FA is an area in which a part of the supply pipe 5 before branching and the supply pipe 5 after branching is arranged between the front transformer lifter 3 and the front end side of the upper frame 1.

The center area CA is an area in which a part of the supply pipe 5 before branching and the supply pipe 5 after branching is arranged between the front end side and the rear end side of the upper frame 1.

The rear region RA is an region in which a part of the supply pipe 5 before branching and the supply pipe 5 after branching is arranged between the rear end side of the upper frame 1 and the rear transformer lifter 4.

It is assumed that the hydraulic pipes arranged in the front area FA and the rear area RA are composed of hoses, and the hydraulic pipes arranged in the center area CA are composed of tubes.

As shown in FIG. 1, the hydraulic pipe (hydraulic hose) routed to the front region FA is supported by the fixed link 25 via the hose support unit 7 (see FIG. 5) described later, and the fixed link 25 is supported. It is laid out along.

As shown in FIG. 4, one end of the fixed link 25 is connected to the support member 31 of the front transformer lifter 3, and the other end 253 is connected to the upper frame 1 via the plate 255. As a result, the fixed link 25 functions as a fixing member for fixing the movement of the main boom 2.

As shown in FIG. 5, a hose support unit 7 for supporting a hydraulic hose routed to the front region FA is attached to the fixed link 25. The hose support unit 7 includes a hose support bracket 71 and a U-shaped member 73 attached to the hose support bracket 71. As shown in FIG. 1, the hose support unit 7 is provided at about three locations with respect to the fixed link 25.

The hose support bracket 71 is attached to the fixing link 25. Further, the U-shaped member 73 is attached to the hose support bracket 71 by a bolt in a state where the hydraulic hose of the front region FA is arranged inside. The U-shaped member 73 is also referred to as a hook member or the like.

As shown in FIG. 6, the hydraulic pipe (hydraulic tube) routed to the center region CA is routed to the lower left end of the upper frame 1 while being supported by the upper frame 1 via the pipe support unit 8. Has been done.

As shown in FIG. 7, the pipe support unit 8 includes a pipe support bracket 81, a pipe clamp 83, and a retaining plate 85.

As shown in FIG. 8, the pipe support bracket 81 is configured as a plate-shaped member having a Z-shaped cross section, and includes three surfaces 811, 813, 815.

The surface 811 is a surface extending in the vertical direction, and is connected to the upper frame 1 by a bolt BT in a state of being in contact with the left side surface of the upper frame 1 (see FIGS. 10 and 11).

The surface 813 is a surface that is bent horizontally with respect to the surface 811 and extends toward the inside of the upper frame 1. The surface 813 is provided with two plate members 814 from which the retaining plate 85 (see FIG. 10) can be inserted and removed so as to project downward. Pin holes 814h are formed in the two plate members 814. A fixing pin PN1 (FIGS. 10 and 11) for fixing the retaining plate 85 arranged between the two plate members 814 is inserted into the pin hole 814h.

The surface 815 is a surface that bends in the vertical direction with respect to the surface 813 and extends downward. A notch 817 is formed on the surface 815 so that the piping clamp 83 can be inserted and removed. Further, a chamfer 819 is formed at the entrance of the notch 817 to facilitate the insertion of the piping clamp 83.

As shown in FIG. 9, the piping clamp 83 is a member for bundling and holding the hydraulic tubes arranged in the center region CA. Specifically, the piping clamp 83 includes an upper member 831, an intermediate member 833, and a lower member 835. The piping clamp 83 is also referred to as a sub-assembly or the like.

A part of the hydraulic tube allocated to the center region CA is sandwiched between the upper member 831 and the intermediate member 833. The other part is sandwiched between the intermediate member 833 and the lower member 835. The upper member 831, the intermediate member 833, and the lower member 835 are fixed via bolts while sandwiching the hydraulic tube.

Further, a pin hole 833h is formed in the intermediate member 833. A fixing pin PN2 (FIGS. 10 and 11) for fixing the retaining plate 85 is inserted into the pin hole 833h.

As shown in FIGS. 10 and 11, the pipe clamp 83 is attached to the pipe support bracket 81 while holding the hydraulic tube allocated to the center region CA.

Specifically, as shown in FIG. 11, the upper member 831 of the pipe clamp 83 is inserted into the notch 817 (see FIG. 8) formed on the surface 815 of the pipe support bracket 81. Then, the retaining plate 85 is arranged between the two plate members 814 of the pipe support bracket 81, and the fixing pins PN1 and PN2 are inserted respectively. As a result, the retaining plate 85 is connected to the pipe support bracket 81 by the fixing pin PN1 and is connected to the pipe clamp 83 by the fixing pin PN2. As a result, even if the pipe clamp 83 tries to come off from the notch 817, the retaining plate 85 comes into contact with the pipe support bracket 81, and the pipe clamp 83 is prevented from falling off.

In the retaining plate 85, pin holes are formed at positions corresponding to the pin holes 814h formed in the two plate members 814 and at positions corresponding to the pin holes 833h formed in the intermediate member 833, respectively. Has been done.

According to the present embodiment, a supply pipe 5 for supplying hydraulic oil to the transformer lifter device is connected to one of the plurality of hydraulic pipes 23 arranged in the main boom 2. Further, the supply pipe 5 is branched into a supply pipe 53 for supplying the hydraulic oil to the front transformer lifter 3 and a supply pipe 54 for supplying the hydraulic oil to the rear transformer lifter 4 by the control valve 6. Then, the supply pipe 5 is arranged on the side of the upper frame 1 and the main boom 2.

Therefore, the piping configuration of the supply pipe 5 is completely independent of the lower traveling body, and is completed by the upper swivel body including the main boom 2. Therefore, when the supply pipe 5 is connected to one of the plurality of hydraulic pipes 23 of the dismantling machine 10 and used as a drive source for the transformer lifter device, it is possible to prevent the supply pipe 5 from being caught in the turning of the lower traveling body. It is possible.

Further, in the present embodiment, a part of the supply pipe 5 before branching and the supply pipe 5 after branching (supply pipe 53) arranged between the front transformer lifter 3 and the rear transformer lifter 4 is the front area FA. , Center region CA and rear region RA can be decomposed into three regions. Therefore, it is possible to easily perform the piping assembly work as compared with the one-piece piping that is not divided into each area FA, CA, RA.

Further, in the present embodiment, the tube routed to the center region CA has a length of about 3 m (meters). Therefore, when the pipe assembly work is performed by one worker, it is preferable that the pipe clamp 83 can be easily attached to the pipe support bracket 81. In this respect, in the present embodiment, since the notch 817 is formed in the pipe support bracket 81, the pipe clamp 83 can be inserted relatively easily.

Further, in the present embodiment, as shown in FIG. 6, the pipe support unit 8 is provided in the two regions AR1 and AR2. In the piping assembly work, first, the piping clamp 83 is inserted into the piping support bracket 81 in one area, and then the same operation is performed in the other area. In the present embodiment, the retaining plate 85 is attached with the piping clamp 83 inserted into the piping support bracket 81. Therefore, during the work in the other area, the piping clamp 83 in the one area for which the work has already been completed does not have to fall off from the notch 817.

Further, according to the present embodiment, the pipe support bracket 81 is attached to the left side surface of the upper frame 1, and the pipe clamp 83 is further attached to the pipe support bracket 81. Therefore, it is possible to apply (retrofit) the piping structure of the transformer lifter device according to the present invention to existing models.

<2. Modification example>
The piping structure of the construction machine and the translifter device according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims.

For example, in the above embodiment, the case where the control valve 6 is provided on the rear end side of the upper frame 1 is exemplified, but the present invention is not limited to this, and the upper frame 1 is provided on condition that the risk of damage such as a collision is avoided. It may be provided on the front end side of the.

Further, in the above embodiment, the case where the notch 817 is formed linearly as shown in FIG. 8 is exemplified, but the present invention is not limited to this, and the notch 818 is L-shaped as shown in FIG. It may be formed in. According to such a variation example, since a part of the piping clamp 83 inserted into the notch 818 falls into the recess 818D of the notch 818, the mounting position of the piping clamp 83 can be easily positioned.

Further, in the above embodiment, a hose is adopted as the piping of the front region FA and the rear region RA, and a tube is adopted as the piping of the center region CA, but the present invention is not limited to this. Contrary to the above embodiment, a tube may be adopted as the piping of the front region FA and the rear region RA, and a hose may be adopted as the piping of the center region CA.

Further, in the above embodiment, the case where the supply pipe 5 is configured to be divided into the front area FA, the center area CA, and the rear area RA is exemplified, but the present invention is not limited to this, and one undivided one. It may be configured by a hose or a tube.

As described above, the construction machine according to the present invention is suitable for jacking up a demolition machine or the like using a transformer lifter and removing the crawler.

1 Upper frame, 2 Main boom, 3 Front transformer lifter,
4 rear transformer lifter, 5 supply piping, 6 control valve,
8 Piping support unit, 10 Demolition machine, 11 Vertical plate, 21 Main boom cylinder,
23 Hydraulic piping, 25 Fixed link, 31 Support member,
33L, 33R, 43L, 43R jack-up cylinder, 35 branch unit,
41 Support member, 53, 54 supply pipe, 53L, 53R supply pipe,
54L, 54R supply piping, 71 hose support bracket, 73 U-shaped member,
81 piping support bracket, 83 piping clamp, 85 plate,
811, 813,815 faces, 814 plate members, 814h pin holes, 818D recesses,
831 upper member, 833 intermediate member, 833h pin hole, 835 lower member,
CA center area, FA front area, PN1, PN2 fixing pin, RA rear area

Claims (6)

It ’s a construction machine,
With the upper frame
The main boom attached to the upper frame and
Multiple hydraulic pipes routed to the main boom,
Equipped with
A front transformer lifter is attached to the tip of the main boom.
A rear transformer lifter is attached to the rear end of the upper frame.
A supply pipe for supplying hydraulic oil to the front transformer lifter and the rear transformer lifter is connected to one of the plurality of hydraulic pipes.
The supply pipe is branched into a first supply pipe that supplies the hydraulic oil to the front transformer lifter and a second supply pipe that supplies the hydraulic oil to the rear transformer lifter by a regulating valve.
A construction machine characterized in that the supply pipe is arranged on the side of the upper frame and the main boom. The supply pipe is routed between a front area allocated between the front transformer lifter and the front end side of the upper frame, and between the front end side of the upper frame and the rear end side of the upper frame. It is configured to be divisible into a center area and a rear area arranged between the rear end side of the upper frame and the rear transformer lifter.
The front area is routed along a fixed link that secures the movement of the main boom by connecting one end to the front transformer lifter and the other end to the upper frame.
The construction machine according to claim 1, wherein the center area is arranged along the side portion of the upper frame. A plurality of pipes arranged in the center area are held in a bundled state by a pipe clamp, and are held.
The construction machine according to claim 2, wherein a pipe support bracket to which the pipe clamp can be attached is fixed to a side portion of the upper frame. The pipe support bracket is formed with a notch in which the pipe clamp can be inserted and removed in the wiring direction of the supply pipe.
The construction according to claim 3, wherein the pipe clamp attached to the pipe support bracket is provided with a retaining member that prevents the pipe clamp from coming off from the notch by abutting on the pipe support bracket. machine. The retaining member is configured as a plate-shaped retaining plate.
The construction machine according to claim 4, wherein the retaining plate is connected to the pipe support bracket and is also connected to the pipe clamp. A front transformer lifter is attached to the tip of the main boom that is attached to the upper frame of construction machinery.
A rear transformer lifter is attached to the rear end of the upper frame.
A supply pipe for supplying hydraulic oil to the front transformer lifter and the rear transformer lifter is connected to one of the plurality of hydraulic pipes arranged at the tip of the main boom.
The supply pipe is branched into a first supply pipe that supplies the hydraulic oil to the front transformer lifter and a second supply pipe that supplies the hydraulic oil to the rear transformer lifter by a regulating valve.
The piping structure of the transformer lifter device, wherein the supply piping is arranged on the side of the upper frame and the main boom.

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