JP6735256B2 - Mounting table device for construction machine work machine - Google Patents

Description

The present invention relates to a mounting table device for a construction machine work machine suitable for mounting the work machine to a main body of a construction machine such as a hydraulic excavator.

Generally, a construction machine such as a hydraulic excavator constitutes a main body with a traveling body and a revolving body which is provided above the traveling body via a revolving frame and swings in the left-right direction, and is attached in front of the revolving body. It is equipped with a working machine that rotates vertically. And, in the working machine of the construction machine, for the work of digging deeply from the ground surface and the work of dismantling high-rise buildings such as buildings from the ground surface, a working machine longer than the length specified as a standard type, so-called, The long front is used.

Since the long front itself is large and heavy, it is often mounted on a construction machine using a crane or the like, and the long front body easily shakes. A mounting table device such as a mounting table has been proposed. As one of conventional techniques of such a mounting table device for a construction machine working machine, for example, an attitude holding device described in Patent Document 1 below is known.

Specifically, the posture maintaining device described in Patent Document 1 has a width that is wider than the width of the working machine, and the working machine with work implements such as a bucket removed has a joint boom and an arm folded. In the state, a mounting table placed with the arm below, a plurality of columns that stand upright on the mounting table and sandwich the joint boom from the left-right direction, and are stretched between the joint boom and the mounting table. It is composed of a mooring tool for mooring the work machine on the mounting table. With this configuration, it is possible to prevent the joint boom from shaking during connection work between the joint boom and the common boom on the revolving structure side, and improve workability when mounting the work machine to the main body of the construction machine. Can be made.

JP-A-11-193543

However, in the conventional posture maintaining device disclosed in Patent Document 1, with the working machine placed on the mounting table, the working machine is held in a posture in a height position where it can be easily attached to the construction machine body. Perform the connecting work while aligning the work equipment. Therefore, unless the installation surface on which the mounting table is placed and the installation surface on the main body side of the construction machine are at the same height, the work machine cannot be mounted on the main body side of the construction machine. It is necessary to move the working machine and the working machine, and the work of mounting the working machine on the main body side of the construction machine is complicated.

For example, when the main body of the construction machine and the working machine are carried into the construction site by different trailers, in order to make the mounting table device equipped with the working machine and the installation surface of the main body side at the same height, a crane is used. It is necessary to unload the mounting table device from the trailer to the ground using the above method. If the mounting table is designed to be attached to and detached from the main body at a height assuming it is on the trailer, it is possible to attach and detach the work machine with the mounting table mounted on the trailer. However, since the height of the cargo bed of the trailer is often different for each vehicle body, if the height of the trailer is different from the expected height, the working machine cannot be attached to or detached from the main body side.

The present invention has been made in view of the circumstances of the prior art as described above, and an object thereof is to easily perform work for attaching a working machine to a main body side of a construction machine even when the main body side and the working machine have different installation heights. Another object of the present invention is to provide a mounting table device for a working machine for a construction machine, which can be carried out.

In order to achieve the above-mentioned object, a mounting table device for a working machine for a construction machine according to the present invention includes a common boom whose base end side is attached to a construction machine main body so as to be able to lift and lower, and work contents on a tip side of the common boom. Applied to a construction machine composed of a work machine selectively connected according to the above, in a mounting table device of a construction machine work machine on which the work machine is placed, the work machine is arranged below the work machine. , A supporting device having a front side fixing part and a rear side fixing part that support two front and rear parts of the working machine, and the rear side fixing part is provided on the supporting device so that the rear side fixing part draws an arc with the front side fixing part as a fulcrum. And a height adjusting device for adjusting the height of the working machine by moving the working machine, the height adjusting device having a drive cylinder attached to the supporting device in an inclined posture, and a rod of the drive cylinder. Is characterized in that the rear side fixing portion is provided .

ADVANTAGE OF THE INVENTION According to the mounting table apparatus for the working machine for construction machines of this invention, the mounting operation of the working machine to the main body side of the construction machine can be easily performed even if the installation heights of the main body side and the working machine are different. .. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a side view showing the whole hydraulic excavator composition given as an example of the construction machine to which the mounting table device of the present invention is applied. It is a side view of the mounting table apparatus concerning the embodiment of the present invention. It is an A section enlarged view of FIG. It is a side view showing the state where the work machine was carried in the mounting base device concerning an embodiment. It is the front view seen from the arrow B direction of FIG. It is a side view which shows the connection operation|movement when the mounting base apparatus which concerns on embodiment is on the ground. It is a side view which shows the connection operation|movement when the mounting base apparatus which concerns on embodiment is on a trailer.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 7, taking a hydraulic excavator equipped with a working machine for dismantling work as an example.

First, the structure of the hydraulic excavator will be described. In FIG. 1, 1 is a crawler type lower traveling body, and 2 is an upper revolving body as a construction machine body mounted on the lower traveling body 1 so as to be rotatable. The upper revolving structure 2 is provided on the revolving frame 3, a cab 4 provided on the front left side of the revolving frame 3, a revolving frame 3 located on the rear side of the cab 4, and a prime mover (not shown) or A machine chamber 5 that houses a hydraulic pump and the like, and a counterweight 6 that is located on the rear side of the machine chamber 5 and that is mounted on the rear end side of the revolving frame 3 are generally configured.

Reference numeral 7 denotes a front device provided at the center of the front part of the upper swing body 2. The front device 7 is attached to the center of the front part of the revolving frame 3 so as to be able to move up and down, and is driven by a boom cylinder 9. And a subassembly 10 for dismantling work as a working machine which is connected to the tip side of the common boom 8 in a replaceable manner.

Here, the subassembly 10 for dismantling work is attached to the joint boom 11, the tip end side of the joint boom 11, and the intermediate arm 13 driven by the intermediate arm cylinder 12 and the tip end side of the intermediate arm 13. The arm 15 is mounted so as to be movable up and down and is driven by the arm cylinder 14, and the cutter 17 is a work tool which is mounted on the distal end side of the arm 15 so as to be movable up and down and is driven by a work tool cylinder 16. ing. Then, by connecting the base end side of the joint boom 11 to the tip end side of the common boom 8 attached to the upper swing body 2 side of the hydraulic excavator by the connecting pin 18, the front device including the subassembly 10 for disassembly work. 7 is assembled. Although FIG. 1 shows an example in which the working tool is the cutter 17, a bucket, a disintegrating crushing tool, a grapple, or the like can be used as the working tool instead of the cutter 17.

Next, a mounting table device used for connecting the joint boom 11 of the disassembly work subassembly 10 and the common boom 8 on the upper swing body 2 side will be described with reference to FIGS. 2 to 5.

In FIGS. 2 and 3, reference numeral 20 denotes a mounting table device. The mounting table device 20 is a side view in which a plate-shaped mounting table 21 that is a supporting device and a plurality of columns are combined to stand upright on the mounting table 21. The triangular support bracket 22, the drive cylinder 23 attached to the rear end side of the support bracket 22 in an inclined posture, the guide rail 24 projecting obliquely upward from the rear end portion of the support bracket 22, and the mounting table 21. The front fixing portion 25 is provided upright at the front end position, the rear fixing portion 26 attached to the tip of the rod 23a of the drive cylinder 23, and the like.

The drive cylinder 23 is a height adjustment device that adjusts the height of the disassembly work subassembly 10 (work machine), and for example, an electric cylinder, an air cylinder, or the like is used. The drive cylinders 23 are installed at two places on the left and right sides of the rear end side of the support bracket 22, and the rear fixing portions 26 are fixed to the rods 23 a of these drive cylinders 23. Here, the drive cylinder 23 is installed in an inclined posture along the tangential direction of an arc whose radius is the distance R between the front side fixed portion 25 and the rear side fixed portion 26, and by operating the drive cylinder 23, The rear side fixed portion 26 attached to the rod 23a reciprocates along the guide rail 24 between the lowered position a and the raised position b shown in FIG. Further, the front side fixing portions 25 are arranged at two positions on the left and right sides of the front end side of the mounting table 21, and the height of the front side fixing portion 25 is set to a position lower than that of the rear side fixing portion 26 attached to the drive cylinder 23. ing.

As shown in FIGS. 4 and 5, when the disassembling work subassembly 10 that is a working machine is mounted on the mounting table device 20, the dismantling work is performed on the front fixing portion 25 that is erected at the front end position of the mounting table 21. An appropriate member on the front side of the vehicle subassembly 10, for example, both ends of a connecting pin 19 connecting the intermediate arm 13 and the arm 15 are supported. Further, a rear side fixing portion 26 attached to the rod 23a of the drive cylinder 23 supports an appropriate member on the rear side of the disassembling work subassembly 10, for example, a stopper (not shown) provided in the lower portion of the joint boom 11. Both ends of the working pin 11a are supported.

In this state, the disassembling work subassembly 10 is loaded together with the mounting table device 20 on the loading platform of the trailer, and if it is transported to the construction site, the front and rear fixing portions 25 of the mounting table device 20 are located at two positions in front and behind of the disassembly work subassembly 10. Since it is supported by the rear fixing portion 26, it is possible to reliably prevent the disassembling work subassembly 10 from collapsing the load on the loader of the trailer. Further, even when the disassembling work subassembly 10 is unloaded together with the mounting table device 20 from the loading platform of the trailer to the ground at the construction site using a crane or the like, the disassembly work subassembly 10 maintains its posture by the mounting table device 20. Therefore, the unloading work using a crane or the like can be performed. Then, the joint boom 11 of the disassembly work subassembly 10 that has been lowered to the ground together with the mounting table device 20 maintains a posture in which the pin hole 11b provided on the base end side thereof is at a predetermined height position from the ground. There is.

The mounting table device 20 according to the present embodiment is configured as described above. Next, using the mounting table device 20, the joint boom 11 of the disassembly work subassembly 10 is shared by the upper swing body 2 side. The work of connecting to the boom 8 will be described with reference to FIGS. 6 and 7.

As shown in FIG. 6, when the disassembly work subassembly 10 is laid down on the ground together with the mounting table device 20, the lower traveling body 1 travels toward the disassembly work subassembly 10 supported by the mounting table device 20. Then, the tip side of the common boom 8 provided on the upper swing body 2 is brought close to the joint boom 11 of the disassembly subassembly 10. Then, by operating the boom cylinder 9 and slightly raising and lowering the common boom 8, the height of the pin hole provided on the tip side of the common boom 8 is made to match the height of the pin hole 11b of the joint boom 11. After that, by connecting the pin holes of the common boom 8 and the connecting boom 11 with the connecting pin 18, the front device 7 including the subassembly 10 for disassembly work is assembled.

On the other hand, as shown in FIG. 7, when the disassembly work subassembly 10 is loaded on the loading platform of the trailer 30 together with the loading platform device 20, the position of the base end side of the joint boom 11 is equal to the loading platform height of the trailer 30. Therefore, the pin hole of the common boom 8 cannot be aligned with the pin hole 11b of the connecting boom 11. In such a case, by operating the drive cylinder 23 provided in the mounting table device 20, the rear side fixing portion 26 attached to the rod 23a is moved from the raised position b to the lowered position a in FIG. As a result, the supporting pin 11a of the joint boom 11 supported by the rear side fixing portion 26 descends, and the rear end of the disassembly subassembly 10 descends to a position facing the tip side of the common boom 8. 8 and the connecting boom 11 can be connected to each other by a connecting pin 18.

Here, since the drive cylinder 23 is installed in an inclined posture along the tangential direction of an arc whose radius is the distance R between the front side fixed portion 25 and the rear side fixed portion 26, the support pin of the joint boom 11 is supported. The rear fixing portion 26 that supports 11a moves in a circular arc with the front fixing portion 25 as a fulcrum, and the rear fixing portion 26 does not change the contact position with the supporting pin 11a and the rising position b in FIG. And the lowered position a can be moved. Further, since the rear side fixing portion 26 is configured to reciprocate along the guide rail 24 provided on the support bracket 22, the rear side fixing portion 26 can be moved smoothly.

As described above, the mounting table device 20 for the construction machine working machine according to the embodiment of the present invention is disposed below the disassembling work subassembly 10, which is a working machine, and is disposed in the front and rear of the dismantling work subassembly 10. A mounting table 21 (supporting device) having a front side fixing portion 25 and a rear side fixing portion 26 that support two locations, and a support bracket 22 on the mounting table 21 are attached to the rear side fixing portion with the front side fixing portion 25 as a fulcrum. 26 is movable so as to draw an arc, and is provided with a drive cylinder 23 as a height adjusting device that adjusts the height of the subassembly 10 for dismantling work. The disassembling work subassembly 10 can be easily attached even when the disassembling work subassembly 10 and the upper swing body 2 are installed at different installation heights.

Therefore, when the disassembly work subassembly 10 is loaded on the platform of the trailer 30 together with the mounting table device 20, the drive cylinder 23 is operated to adjust the height of the rear end side of the disassembly work subassembly 10. For example, the common boom 8 on the upper swing body 2 side and the joint boom 11 on the subassembly 10 side for dismantling work can be easily attached and detached without lowering the mounting table device 20 from the trailer 30 using a crane or the like. .. Further, even when the disassembling work subassembly 10 is lowered to the ground together with the mounting table device 20, by adjusting the height position of the rear end side of the disassembling work subassembly 10 by the operation of the drive cylinder 23, The front end side of the boom 8 and the rear end side of the connecting boom 11 can be easily aligned.

Further, in the embodiment of the present invention, the rear fixing portion 26 is attached to the tip of the rod 23a of the drive cylinder 23 which is the height adjusting device, and the movement of the rear fixing portion 26 is guided by the guide rail 24. Therefore, the rear fixing portion 26 can be moved smoothly during height adjustment. Further, since the drive cylinder 23 is installed in an inclined posture along the tangential direction of an arc whose radius is the distance R between the front side fixed part 25 and the rear side fixed part 26, the rear side fixed part is adjusted during height adjustment. 26 moves in a circular arc with the front side fixed portion 25 as a fulcrum, and the rear side fixed portion 26 can be moved up and down without changing the contact position with the supporting pin 11a of the disassembly work subassembly 10.

In the above-described embodiment, when the disassembly work subassembly 10 is mounted on the mounting table device 20, the connection pin 19 that connects the intermediate arm 13 and the arm 15 is supported by the front side fixing portion 25, and is connected. The supporting pin 11a provided on the lower portion of the boom 11 is supported by the rear fixing portion 26, and the disassembly work subassembly 10 side supported by the front fixing portion 25 and the rear fixing portion 26. It is also possible to use another member as the member.

Further, in the above-described embodiment, the case where the two drive cylinders 23 are used as the height adjusting device has been described, but the present invention is not limited to this case, and one drive cylinder 23 is used to perform the disassembly work subassembly 10. The height position on the rear end side may be adjusted.

Further, the above-described embodiments are examples for explaining the present invention, and are not intended to limit the scope of the present invention only to those embodiments. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention.

1 Lower Traveling Body 2 Upper Revolving Body 7 Front Device 8 Common Boom 9 Boom Cylinder 10 Subassembly for Dismantling Work (Work Machine)
11 Joint Boom 11a Support Pin 12 Intermediate Arm Cylinder 13 Intermediate Arm 14 Arm Cylinder 15 Arm 18 Connecting Pin 19 Connection Pin 20 Mounting Table Device 21 Mounting Table 22 Support Bracket 23 Drive Cylinder (Height Adjusting Device)
23a rod 24 guide rail 25 front fixing part 26 rear fixing part

Claims (3)

It is applied to a construction machine composed of a common boom whose base side is attached to the main body of the construction machine so that it can be lifted and lowered, and a working machine which is selectively connected to the tip side of the common boom according to the work content, In the mounting table device of the construction machine working machine on which the working machine is mounted,
A support device that is arranged below the working machine and has a front side fixing portion and a rear side fixing portion that support two front and rear portions of the working machine;
A height adjusting device that is provided on the supporting device and that moves the rear fixing part in a circular arc with the front fixing part as a fulcrum to adjust the height of the working machine .
The height adjusting device has a drive cylinder attached to the supporting device in a tilted posture, and the rear fixing portion is provided on a rod of the drive cylinder. Stand device. The mounting table device for a construction machine work machine according to claim 1 ,
The mounting table device for a working machine for construction machine, wherein the drive cylinder is installed along a tangential direction of an arc having a radius between a distance between the front fixing portion and the rear fixing portion. The mounting table device for a construction machine work machine according to claim 1 or 2 ,
A mounting table device for a working machine for construction machines, wherein the support device is provided with a guide rail for guiding the movement of the rear fixed portion.

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