JPS6346493Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention provides a working device that is placed on a sloped surface of a dam, a dam, etc. and performs, for example, asphalt paving work on the sloped surface. The work circuit is supported and operated at the top (referred to as the top end), and the work circuit is loaded on the transport/operation device.

<Prior art> When performing work such as asphalt paving on a sloped surface of a dam, bulwark, etc. using a working device, the slope is so steep that there is a risk of the working device falling over or sliding down. It is supported and operated via wire ropes, etc.

A conventional example of such a device is shown in FIG. 1 (see Japanese Patent Publication No. 49-21932).

That is, a material transport vehicle 2 that spreads materials such as asphalt paving material on the slope 1 and a construction device 3 that performs leveling, compaction, etc. of the spread material are connected to the top 4 diagonally above the slope 1. From wire rope 5,6
It is supported so as to be movable in the vertical direction of the inclined surface 1 by a hoisting device 7 via. In addition, the material carrier 2 and the construction device 3 are moved, for example, in the left and right direction of the inclined surface 1 (first direction).
When moving to the back side or the front side of the figure, the material carrier 2 hoisted by the winch 8 of the hoisting device 7 is placed on the plate-shaped loading platform 7a, and then one end is moved as shown by the broken line in FIG. The material carrier 2 is placed above the main body of the hoisting device 7 by rotating the loading platform 7a around the center. Thereafter, the construction device 3 hoisted by the winch 9 is placed on the loading platform 7b that is overlapped with the loading platform 7a, and is moved together with the hoisting device 7 on the top 4 to the next work location.

However, in such a conventional hoisting device, after the loading platform 7b is rotated counterclockwise in FIG. Since the construction equipment 3 is loaded on the loading platform 7b, the loading platform 7a becomes long, and the hoisting device 7 becomes large in size due to the installation of a driving device for rotating the loading platform 7b. For this reason, when the hoisting device is moved over the top of a road where the road width is narrow and the strength of the roadbed is weak due to construction of embankments, there is a risk that the road shoulder at the top may collapse.

<Purpose of the invention> In view of the current situation, the present invention aims to provide a transport/operation device that can carry multiple working devices while reducing the size of the steps, thereby reducing the size of the entire device. purpose.

<Structure of the invention> For this reason, the present invention is such that one end of each of a pair of link members disposed in a vertical plane without intersecting each other is attached to the main body of a vehicle that can run, and the pair of link members can be freely rotated. The other end of each of the steps is rotatably attached to the step, and a moving device is provided to move the step, so that the step can be moved up and down while being restrained by the pair of link members.

<Example> Hereinafter, an example of the present invention will be described based on the drawings shown in FIGS. 2 to 8.

In FIGS. 2 and 3, crawlers 12 are attached to both sides of the frame 11, respectively. Further, a main body frame 13 is provided above the frame 11, and this main body frame 13 and the frame 11 are connected by a turning device 14.

As shown in FIG. 4, the swing device 14 includes an annular inner ring 1 bolted to the upper surface of the frame 12.
5, and an internal gear 15a is formed on the inner peripheral surface of the inner ring 15. On the other hand, an annular outer ring 16 is bolted to the lower surface of the main body frame 13. The outer circumferential portion of the inner ring 15 is held between the inner circumferential portion of the outer ring 16 via a plurality of ball bearings 17 so as to be relatively rotatable. In addition, a hydraulic motor 18 with a reducer is installed at the bottom of the main body frame 13.
is attached, and a gear (not shown) attached to the rotating shaft of the hydraulic motor 18 is meshed with the internal gear 15a of the inner ring 15. Hydraulic pressure is supplied to the hydraulic motor 18 by operating a control panel in the driver's seat (not shown), and this causes the main body frame 13 to move around the pivot axis 1.
It is configured to rotate 360 degrees around point 3a.

A base end portion of a first step 19 on which construction equipment and the like are placed is rotatably attached to the front portion of the main body frame 13. As shown in FIGS. 5 and 6, the first step 19 includes a pair of hollow main body parts 19a attached to the main body frame 13, and a pair of hollow main body parts 19a that are slidably inserted into the hollow parts of the main body parts 19a. A movable portion 19b is provided. Hydraulic cylinders 20 are attached to the inner side of the main body part 19a, and the rod tips of these hydraulic cylinders 20 are attached to the movable part 19b, so that when the hydraulic cylinders 20 are operated, the movable part 19b moves to the tip part of the main body part 19a. It is configured to protrude from the A pair of hydraulic cylinders 2 are mounted on the main body frame 13.
1 are attached to each other so as to be able to swing freely, and the rod tips of these hydraulic cylinders 21 are attached to the main body 19.
It is freely swingably attached to a bracket 22 fixed to the lower part of a, and the first step 19 is rotated about its base end as shown by the chain line in FIG. 5 by operating the hydraulic cylinder 21. It is configured.

A pair of frames 2 are mounted on the upper part of the main body frame 13.
3 are erected at predetermined intervals, and a second step 25 on which, for example, a material carrier is mounted, is attached to these frames 23 via a pair of link members 24a, 24b. The second step 25 is formed of a movable bracket 25a attached to these link members 24a and 24b, and a pair of main body portions 25b attached to the bracket 25a and disposed above the first step 19.

Here, the length of the link member 24a rotatably attached to the upper part of the frame 23 is the length of the frame 23.
A link member 24 rotatably attached to the lower part of the
b, and the distance l ₁ between the swinging fulcrums of each link member 24a, 24b in the frame 23 is shorter than the distance l ₂ between the swinging fulcrum of each link member 24a, 24b in the movable bracket 25a. It is formed.

Hydraulic cylinders 26 as a moving device are attached to the lower part of the frame 23 so as to be able to swing freely, and the rod tips of these hydraulic cylinders 26 are attached to the lower part of the movable bracket 25a so as to be able to swing freely. By this operation, the second step 25 is restrained by the pair of link members 24a and 24b, and the frame 2 is moved as shown by the chain line in FIG.
It is configured to be rotated about an instantaneous center to the left of 3 and moved above the first step 19.

Further, a first win 27 having a pair of wire ropes wound thereon is freely rotatably attached to the rear center of the main body frame 13, and these wire ropes are used for a material carrier etc. placed on the second step 25. It is connected to the. Further, second winches 28a and 28b having wire ropes wound thereon are freely rotatably attached to the main body frame 13 on both sides of the first winch 27, and the wire ropes are placed on the first step 19. Connected to equipment, etc. 1st
The winch 27 and the second winches 28a, 28b are each rotationally driven by a hydraulic motor (not shown). First winch 27 and second winch 28
A and 28b constitute a support/operation section. Also,
Frame 11, crawler 12 and main frame 1
3 constitutes a vehicle.

Next, the functions of this device will be explained based on FIGS. 7 and 8.

First, move the transport/operating device onto the inclined surfaces 29a, 29b.
The first step 19 and the second step 25 are oriented in the longitudinal direction of the top end 30 as shown by the chain line in FIG. Then, a material transport vehicle 31 for dispersing, for example, asphalt mixture onto the inclined surface 29a is driven with its top end 30 and placed on the second step 25.
After moving the second step 25 together with the first step 19 above the first step 19, a construction device 32 is placed on the first step 19 for leveling the spread asphalt mixture to a substantially uniform thickness. Further, the tip of the wire rope 31a pulled out from the first winch 27 is connected to the material transport vehicle 31, while the wire rope 32a pulled out from the second winches 28a, 28b is connected to the construction device 32.

After that, the main body frame 13 is
At the same time, the first and second steps 19 and 25 are rotated 90 degrees clockwise in FIG.
The movable part 19b of the step 19 is expanded and contracted so that the top end 30 of the movable part 19b is brought into contact with the road shoulder.
Then, the construction device 32 is moved onto the inclined surface 29a while being supported by the wire rope 32a. Further, by operating the hydraulic cylinder 26, the second step 25 is moved down and brought into contact with the first step 19, and then the material carrier 31 is moved onto the inclined surface 29a while being supported by the wire rope 31a. Then, the asphalt mixture spread from the material transport vehicle 31 is leveled to a substantially uniform thickness by moving the construction device 32 up and down on the slope 29a to form an asphalt pavement layer.

In this way, after the work on the lane 33a extending in the vertical direction of the slope 29a is completed, the material carrier 31 is lifted up by the first winch 27 and moved onto the second step 25, and the second step 25 is moved to the second step 25. 7, the first step 19 is moved upward as shown by the broken line in FIG. In addition, second winches 28a, 28b
The construction equipment 32 is pulled up and the first step 19 is carried out.
the first step 19 away from the road shoulder.

Then, the material transport vehicle 31 and the construction equipment 32 as well as the transport/operation equipment are moved over the top 30 to the next lane 33.
These lanes 3 are moved laterally to lanes b and 33c in sequence.
Work is performed at 3b and 33c.

Note that 34 is a crane that supplies materials to the material transport vehicle 31.

In this way, in this embodiment, the second step 25
is restrained by a pair of link members 24a, 24b and rotated around an instantaneous center on the left side of the frame 23 to move above the first step 19. 25 and the second step 25 is smaller than before, for example, the first and second winches 27, 28a,
28b can be easily attached to the main body frame 13, and the transport/operating device can be downsized. This reduces the weight of the transport and operation equipment, so
Risks such as collapse of the road shoulder at the top can also be reduced.

Note that the same effect as described above can be obtained even if the lengths of the pair of link members 24a and 24b are made substantially equal to form parallel members.

In addition, the first step 19 and the second step 25
is rotated in a horizontal plane by the turning device 14, so even if the road width at the top end 30 is narrow, the material carrier 31 etc. can be loaded and unloaded at the top end 30, and the material carrier 31 etc. can be loaded and unloaded at the top end 30. Material carrier 3 on 29b
Since it can be moved in the first place, work efficiency can be improved.

Furthermore, since the movable part 19b is made to protrude from the main body part 19a of the first step 19, when the slopes of the inclined surfaces 29a are different, the amount of protrusion of the movable part 19b and the amount of rocking between the main body part 19a and the movable part 19b are By adjusting the slope of the first step 19 and the slope 2
9a can be made to match the inclination, thereby facilitating loading and unloading of the material transport vehicle 31 and the like.

<Effects of the invention> As explained above, the present invention connects the vehicle body and the step by a pair of link members, and while the step is restrained by the pair of link members, the step is momentarily rotated about the center to move the step up and down. Because of this, the proportion of the step and the device for moving the step up and down in the upper part of the transport/manipulation device can be made smaller than in the past, thereby making it possible to downsize the transport/manipulation device.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram showing a conventional example of a hoisting device;
The figure is a side view showing one embodiment of the present invention, Figure 3 is a plan view of Figure 2, Figure 4 is an enlarged view of section A in Figure 2, and Figures 5 and 6 are main points of Figure 2. 5 is a side view, FIG. 6 is a plan view of FIG. 5, FIG. 7 is an overall configuration diagram for explaining the embodiment, and FIG. 8 is a plan view of FIG. 7. 11...Frame, 13...Body frame, 1
3a...Swivel axis, 14...Swivel device, 15...Inner ring, 16...Outer ring, 19...First step, 24
a, 24b... link member, 25... second step, 27... first winch, 28a, 28b...
Second winch, 29a, 29b...slanted surface, 30
...Top end, 31...Material transport vehicle, 32...Construction equipment.

Claims (1)

[Scope of utility model registration request] A support/operation unit for supporting and operating a work device for performing work on a slope, and a step for loading the work device are provided in a vehicle body capable of traveling, and the slope is disposed at the top end above the slope. In a conveyance/operation device for a surface working device, one end of each of a pair of link members disposed in a vertical plane without intersecting each other is rotatably attached to the vehicle body, and one end of each of the pair of link members is rotatably attached to the vehicle body. A slope working device characterized in that the other end is rotatably attached to the step, a moving device is provided for moving the step, and the step is moved up and down while being restrained by a pair of link members. transportation and operation equipment.