JP2002348914A - Revolving working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembling and adjusting a control valve V and an operating lever 27 to a revolving structure. SOLUTION: A revolving structure 4 provided on a traveling device 3 is provided with control valves V1 to V4 for controlling a hydraulic device, operating tools 27, 43 for operating the control valves V1 to V4, and interlocking tools 48, 52 for interlock-connecting the operating tools 27, 43 to the control valves V1 to V4. The control valves V1 to V4, the operating tools 27, 43 and interlocking tools 48, 52 are fitted to the same fitting mount 45, and the fitting mount 45 is fitted to the revolving structure 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a turning machine such as a backhoe.

[0002]

2. Description of the Related Art A turning machine of this type is provided with a turning machine on a crawler traveling device so as to be able to turn around a vertical axis, an excavating device is provided in front of the turning machine, and a driver's seat is provided on the turning machine. , An operation lever and the like. The turning body has an engine, on a base plate constituting a bottom portion thereof,
Equipped with a hydraulic pump, hydraulic oil tank, etc., and a control valve for supplying hydraulic oil from the hydraulic pump to a hydraulic actuator of a drilling device or a traveling device. It had to be operated by a lever.

[0003]

Conventionally, a control valve, an operation lever for operating the control valve, and a link for interlocking the operation lever and the valve have been individually attached to the base plate. I was However, since many other components, brackets, and the like are provided on the base plate, it is difficult to assemble the components, and it takes time to perform the operation. Also, the coordination between the control valve and the control lever must be adjusted while mounted on the base plate, which is a complicated work in a very small space, which is inefficient and increases the number of man-hours. Was the cause.

[0004] The present invention has been made in view of the above-described embodiment, and has as its object to facilitate assembly and adjustment of a control valve and the like to a turning body.

[0005]

The present invention employs the following technical means to achieve the above object. That is, the present invention relates to the turning machine 4 provided on the traveling device 3.
And a control valve V for controlling the hydraulic actuators 10, 36
1 to V4 and an operating tool 2 for operating the control valves V1 to V4
7, 43, and a turning tool having interlocking tools 48, 52 for interlocking the operating tools 27, 43 and the control valves V1 to V4, the control valves V1 to V4, the operating tools 27, 4
3 and the interlocking members 48 and 52 are mounted on the same mounting base 45, and the mounting base 45 is mounted on the swivel body 4.

By adopting such a configuration, the control valves V1 to V4, the operating tools 27 and 43,
It is possible to attach the interlocking tools 48 and 52 to adjust the coordination of these operations, and then attach the mounting base 45 to the turning machine body 4. Therefore, the assembling work and the adjusting work can be easily performed, and the man-hour can be reduced. The control valves V1 to V4 can be configured to control a hydraulic actuator such as a traveling device 3 or a working device (e.g., an excavator) mounted on the turning machine body 4. , Lever type, pedal type, and the like. In addition, interlocking tool 48,
42 can be constituted by a link, a rod, a push-pull cable, or the like.

The mounting base 45 is provided with a support member 63 for mounting and supporting a structure 29 mounted on the swivel body 4, for example, a cabin, a handrail, a protection member for guarding a front side of a driver's seat, and the like. It is preferable to provide them integrally. Conventionally, such a support 63 is directly erected on the bottom plate (base plate) of the turning machine body 4. In this case,
When the mounting base 45 to which the control valves V1 to V4 and the like are mounted is mounted on the swivel body 4, the support 63 serves as an obstacle, making mounting difficult. Therefore, the support 63 is also attached to the mounting base 4.
5 so that the turning body 4 of the mounting base 45 is
It can be more easily attached to the vehicle.

When the mounting base 45 is mounted in the vicinity of the outer peripheral portion of the base plate 16 forming the bottom of the turning body 4, the cover 4 forming the outer peripheral portion of the turning body 4 is attached to the mounting base 45. It is preferable to attach it. In this case, it is possible to mount the cover body 20 on the mounting base 45 before mounting the mounting base 45 to the revolving machine body 4, and the mounting of the cover body 20 is facilitated. Further, if the cover body 20 is temporarily moved to the revolving machine body 4 or the mount 4
5 between different parts, such as the cover body 20 due to dimensional errors between the parts and welding distortion.
May not be mounted properly, but by mounting the cover body 20 only on the mounting base 45, such a problem hardly occurs.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 6 and 7, a turning work machine 1 exemplified as a small back turning type backhoe has a traveling device 3 having a pair of left and right crawler traveling bodies 2, and a revolving machine body rotatably provided on the traveling device 3. 4 and a digging device 5 mounted on the turning machine body 4. The traveling device 3 forms a crawler traveling body 2 by providing a driving wheel 8 and a driven wheel 9 on the left and right sides of the track frame 7 and winding an elastic crawler such as rubber around these. The crawler traveling body 2 is circulated by a traveling driving body 10 composed of a hydraulic motor connected to driving wheels 8.

At the center of the upper surface of the track frame 7, the turning body 4 is mounted via a turning bearing 12. The swinging machine body 4 is freely swingable about a vertical swing axis X by a swing drive body (not shown) including a hydraulic motor disposed therein. A dozer 13 is pivotally attached to the front end of the track frame 7, and the dozer 13 is moved up and down by a dozer driving unit 14 composed of a hydraulic cylinder. The revolving machine body 4 has an engine 17, a radiator, a hydraulic pump, a fuel tank, a hydraulic oil tank, and the like mounted on a base plate 16 constituting a bottom portion thereof via a bracket or the like. .

Further, cover bodies 20 and 21 are provided on the front part and the left and right side parts of the turning machine body 4, and weights 22 are provided on the rear part.
Is provided. An operating section 28 having a driver's seat 24, a boarding / alighting step 25, control levers 26 and 27, and the like is disposed on the left side of the front part of the turning body 4 and a cabin 29 is mounted so as to surround the operating section 28. . A support bracket 31 for mounting the excavator 5 is fixedly mounted on the front portion of the base plate 16. The excavator 5 includes a swing bracket 32 attached to a support bracket 31 so as to be swingable about a vertical axis.
Boom 33 that is connected to 2 so as to be swingable about the left and right axes.
And an arm 34 connected to the boom 33 so as to be swingable about the left and right axes, and a bucket 35 connected to the arm 34 so as to be swingable about the left and right axes.

The swing bracket 32, the boom 33, the arm 34, and the bucket 35 are oscillated by drivers 36, 37, 38, and 39, each of which is a hydraulic cylinder. The hydraulic fluid from the hydraulic pump is supplied to each of the driving bodies (hydraulic actuators) 10, 14, and 36 below the step 25 in the operating section 28.
Control valve unit 41 which controls the operation by feeding to
Are arranged. This control valve unit 41 is shown in FIGS.
As shown in FIG. 3, a plurality of control valves V corresponding to the driving bodies 10, 14, 36 to 39 are configured by arranging and integrating a large number in the front-rear direction. The corresponding driving bodies 10, 14, 36 to 39 are connected to each other by hydraulic piping or the like.

In FIG. 6 and FIG. 1, an operating lever 26 provided on the left and right sides of the driver's seat 24
7 to 39 and the spool of the control valve V corresponding to the turning drive body are operated by pilot pressure, and a pair of left and right operation levers (operating tools according to the present invention) 27 disposed in front of the driver's seat 24 are provided. , A control valve V for controlling the traveling drive body 10
1, the spool of V2 is operated. A pedal 43 is disposed on the right side of the traveling operation lever 27. The pedal 43 is used to operate a spool of the control valve V3 for controlling the driving body 36 of the swing bracket 32 and a spool of the control valve V4 for the service port. The operation is also performed.

The control valve unit 41 is mounted on a mounting base 45 mounted on the base plate 16 of the turning machine body 4 with bolts or the like. The mounting base 45 is disposed on the left front side of the turning machine body 4 and near the outer peripheral portion of the turning machine body 4, and is a board 4 made of a flat plate.
The control valve unit 41 is fixed to the substrate 46 on one side (left side) via a pedestal or the like. A support member 47 for swingably supporting the traveling operation lever 27 is erected and fixed at a front portion of the substrate 46. A bracket or the like is provided on the right side of the support member 47. The pedal 43 is mounted via the pedal.

Behind the support member 47, on the side (right side) of the control valve unit 41, a driving operation lever 27 and a pedal 43 and a corresponding spool of the control valves V1 to V4 are interlockingly connected. First and second interlocking tools 48 and 52 are provided. The first interlocking member 48 includes front and rear L-shaped links 49 rotatably mounted on a vertical shaft erected on the substrate 46, the links 49 and the control valves V1, V
A second rod 5 connecting each link 49 to each of the left and right operation levers 27;
And 1.

The second interlocking tool 52 includes two upper and lower links 55 rotatably attached to a support shaft 54 erected on the base plate 46, a link 55 for each link and a spool for each of the control valves V3 and V4. And a first rod 57 for connecting the
And a second rod 59 that connects the pedal 43 and the pedal 43. Therefore, the mounting base 45 is provided with the control valve unit 41, the traveling operation lever 27, the pedal 43 and the interlocking tool 4.
8 and 52 are attached together, and the attachment base 45 is attached to the base plate 16 of the turning machine body 4.

For this reason, if the components 41, 27, 43, 48, and 52 are mounted on the mounting base 45, and then the mounting base 45 is mounted on the base plate 16, the operation of mounting the components is simplified. In addition, the operation lever 27 and the pedal 43 and the control valves V1 to V4
The adjustment of the linking operation with the spool can be easily performed in a short time by performing the adjustment on the mounting table 45 before mounting the base plate 16. A multi-valve 62 is attached to the substrate 46 in front of the control valve unit 41, so that the hydraulic piping work between the multi-valve 62 and the control valve unit 41 can be easily performed. On the front side of the operation lever 27, a support 63 for fixing and supporting the front part of the cabin 29 is provided upright.

Conventionally, the support 63 is provided with
Was directly attached to the base plate 16 etc.
In this case, the mounting base 4 on which the control valve unit 41 and the like are mounted
When mounting 5 on the base plate 16, the support tool 63 becomes an obstacle and becomes difficult to mount.
There is also a risk that the adjustment of 8, 52, etc. may go wrong. Therefore, in the present embodiment, such a problem does not occur by also integrally fixing the support 63 to the mount 45. The support 63 is connected to the support member 47 on the rear side by welding, whereby the support 63 is reinforced by the support member 47, and the cabin 29 can be stably supported.

The support 63 can be configured to be used for mounting and supporting a handrail used for getting on and off the turning body 4 and a protection member for guarding the driving section 28 from the front side. Further, the support 63 and the support member 47 may be formed integrally or may be completely separated. Covers 20 and 21 constituting the outer peripheral portion of the turning machine body 4 are mounted on the mounting table 45.
Of these, the one 20 disposed on the left side is mounted.

That is, stays 65 are provided at a plurality of locations on the left side of the board 46, and a plurality of stays 65 are provided on the front surface of the support 63 in front of the board 46.
, The cover body 20 is attached by bolts or the like. Therefore, a dimensional error is less likely to occur than in the case where the cover body 20 is mounted over a plurality of members such as the base plate 16 and the mounting base 45, and the mounting can be reliably performed. If the mounting base 45 is mounted on the base plate 16 after the mounting, the assembling work can be performed more quickly and easily, and the man-hour and cost can be reduced.

As shown in FIGS. 3 and 4, the support bracket 31 has upper and lower wall portions 68 and 69 and left and right wall portions 70 and 71 connecting the left and right side portions of the upper and lower wall portions 68 and 69.
And On the other hand, the hydraulic piping P connecting each control valve V of the control valve unit 41 and each of the driving bodies 37 to 39 of the excavator 5 is formed by the upper and lower left and right walls 68 to 71 of the support bracket 31 from the turning machine body 4 side. The support bracket 3 passes through the enclosed space to reach the excavator 5.
A guide member 72 of the hydraulic pipe P is integrally formed on the upper wall 68 of the first unit.

That is, the support bracket 31 is formed of precision cast steel, and the guide member 72 is formed of a round bar or the like, and is integrally cast with the support bracket 31. Member 7
The step of post-attaching 2 by welding or the like becomes unnecessary, and the number of steps can be reduced. In addition, the support bracket 31 includes:
A mounting piece 7 for mounting a grease nipple for lubricating the driving body 36 for the swing bracket 32, the turning bearing 12, and the like, and for mounting the right cover body 21.
The mounting piece 75 of the other components such as the battery 4 and the like, the mounting portion 76 of the cabin 29, the mounting portion 77 of the step 25, and the like are integrally molded, thereby also reducing man-hours. I have.

As shown in FIG. 5, a swivel joint 78 is attached to the turning center X of the turning machine body 4.
The lower portion of the outer sleeve 79 of the swivel joint 78 is attached to the track frame 7 via an attachment plate 80, and the inner shaft 81 is rotatably fitted on the outer sleeve 79. A hydraulic pipe P from the control valve unit 41 is connected via an adapter 82 to an upper side surface of the inner shaft 81 protruding from the outer sleeve 79.

A through hole 84 is formed in the base plate 16 of the turning machine body 4 so as to penetrate in the vertical direction.
Is inserted into the through hole 84, and the through hole 84
A rotation stopper 85 fixed to the inner shaft 81 is engaged with the notch portion 84a recessed in the front and rear directions. The rotation stopper 85 is fixed to the inner shaft 81 at a position below the adapter 82 by welding or the like. Therefore, the rotation stopper 85 does not hinder the connection of the hydraulic piping P. The adapter 82 can be added to the inner shaft 81 without causing the obstacle 85 to become an obstacle.

The present invention is not limited to the above-described embodiment, and can be appropriately designed and changed. For example, the configuration is not limited to a configuration in which both the operation lever 27 and the pedal 43 are mounted on the mounting base 45, and one of them can be configured to be mounted on the mounting base 45 as an operating tool according to the present invention. In addition, the operating tool and the control valve of the present invention
The present invention is not limited to the use for the driving body 36 of the swing bracket 32, and may be configured for other driving bodies 37 to 39 of the excavator 5, the dozer driving body 14, and the like.

Further, in the above embodiment, the turning work machine 1 is exemplified by a small rear turning type backhoe.
It can be configured as a so-called ultra-small turning type, standard type backhoe or the like.

[0027]

As described in detail above, according to the present invention,
The assembly and adjustment of the control valve, its operating tool, and the interlocking tool can be performed easily and quickly.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part inside a turning machine body of a turning work machine according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view of a support bracket.

FIG. 5A is a plan view of a swivel joint, and FIG.
Is a side view.

FIG. 6 is a plan view of the turning work machine.

FIG. 7 is a side view of the turning work machine.

[Explanation of symbols]

 Reference Signs List 3 traveling device 4 revolving machine body 20 cover body 27 operating lever (operating tool) 29 cabin (structure) 41 control valve unit 43 pedal (operating tool) 45 mounting base 48 interlocking tool 52 interlocking tool 63 support tool V1-V4 control valve

Claims (3)

[Claims] A swing machine (4) provided on a traveling device (3) is provided with control valves (V1 to V4) for controlling hydraulic actuators (10, 36) and control valves (V1 to V4). Operating tools (27, 43) to be operated;
3) A turning work machine including interlocking tools (48, 52) for interlocking the control valves (V1 to V4), wherein the control valves (V1 to V4), the operating tools (27, 43), and the interlocking tools A turning work machine characterized in that tools (48, 52) are mounted on the same mount (45), and the mount (45) is mounted on the turning body (4). 2. A swivel body (4) is provided on the mounting base (45).
The turning machine according to claim 1, characterized in that it comprises a support (63) for a structure (29) mounted thereon. 3. The cover (45) is attached near an outer peripheral portion of a base plate (16) constituting a bottom portion of the turning body (4), and a cover constituting an outer peripheral portion of the turning body (4). The turning work machine according to claim 1 or 2, wherein (4) is mounted on the mount (45).