JPH0442516B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a working vehicle used for electrical installation work, and particularly to a working vehicle that can easily load and transport utility poles such as urban composite poles. .

[Prior art]

Traditionally, in the construction of utility poles, the poles are transported to the erected location using trucks, etc., but it is necessary to separately use cranes, etc. to load and unload the utility poles, and it is necessary to secure personnel for this purpose. The need arose. Furthermore, it is difficult for large vehicles to enter and operate in narrow spaces, and in this case, it is necessary to rely on human power, and each task requires a long time and is highly dangerous. Furthermore, in order to facilitate the construction of columns in such narrow spaces, urban composite columns constructed by connecting a lower concrete column, an intermediate steel pipe, and an upper steel pipe are widely used. However, even with such composite columns, a crane or the like must be used for loading and unloading, making the pole erection work complicated and dangerous.

[Purpose of the invention]

The present invention is a utility pole that can substantially load, transport, and unload utility poles with a single unit, and because it is small, it can easily enter defile roads, farm roads, etc., and can be easily and reliably transported. The purpose is to provide a work vehicle that can be loaded.

Another object of the present invention is to provide a work vehicle capable of being loaded onto utility poles, which allows the above-mentioned operations to be carried out by a small number of people and also saves labor.

[Structure of the invention]

The present invention provides a main leader disposed on a traveling vehicle such that it can be raised and lowered, a sub-leader movably connected to the main leader in a multi-stage telescoping type, and a sub-leader movable in the direction of extension and contraction of the main leader and the sub-leader. and a movable base for receiving a utility pole connected to the base, one end being fixed to the main leader and movable around the upper end of the sub-leader when the main leader is in an upright position, and the other end being connected to the movable base. a chain member having one end fixed to the main leader, and the other end connected to the movable base so as to be movable around the lower end of the sub-leader when the main leader is in an upright position; When the sub-leader moves with respect to the main leader, the moving base is movable in the same direction as the moving direction of the sub-leader, and the base end of the main leader and the moving base are rollers or rollers capable of receiving utility poles. A roller is rotatably provided, a leader receiving portion is provided on the traveling vehicle to receive both widthwise ends of the main leader when the main leader is in a reclined position, and a winch is further provided on the traveling vehicle, and an output of the winch is provided. A wire wound around the shaft is routed to the base end side of the main leader via a pulley provided on the movable base, and a hanging metal fitting for receiving the bottom side of the utility pole is connected to the tip of the wire, and the winch The present invention is characterized in that the telephone pole can be received and loaded on the rollers of the main leader and the rollers of the movable base during wire hoisting and extension operations of the sub-leader.

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the accompanying drawings.

FIG. 1 is a front view showing an embodiment of the electrical installation work vehicle of the present invention, FIG. 2 is a plan view taken along the line - in FIG. 1, and FIG. 3 is a side view taken along the line -
FIG. 4 is a side view taken along the same line.

In the figure, 1 is a body frame of a working vehicle, 2 is a drive engine fixed to the center of the body frame 1, 3 is a dual hydraulic pump driven by the drive engine 2 and an endless belt 4, and 5 is a body frame 1 A hydraulic oil tank for the hydraulic pump 3 provided at the rear of the vehicle, 6 a pair of crawler tracks provided on both sides of the vehicle body frame 1, 7 fixed to both front sides of the vehicle body frame 1 by brackets 8, and a drive sprocket 9 on the output shaft. 10 is a driven sprocket that is built into the rear of the vehicle body frame 1 and is inscribed in the crawler track 6; 11 is a driven sprocket that is located below both sides of the vehicle body frame 1 and is inscribed in the lower side of the crawler track 6 with the bearing portion as the axis. A driven wheel for grounding; 12 is an operation valve block provided in front of the vehicle body frame 1 to control the operation of each hydraulic cylinder and each hydraulic motor, which will be described later; 13 is also provided in the vehicle body frame 1, and is used when using various hydraulic tools. A hydraulic converter 14 connects this, a hydraulic winch for towing and loading that is installed on one side of the center of the body frame 1 and can rotate 180 degrees and lock 90 degrees, 15 denotes a hydraulic winch for towing and loading the body frame 1.
A pair of L's are provided near the front of the
A leader receiving part with a letter-shaped cross section, 16 is a utility pole receiving part for side loading attached to a support 16a erected at the front and rear of the upper part of the vehicle body frame 1, and 17 is an outrigger and grounding part provided so as to be able to extend on both rear sides of the vehicle body frame 1. hydraulic cylinder,
Reference numeral 18 denotes a composite leader receiving bracket provided on both rear sides of the vehicle body frame 1, and 19 a composite leader mounted so as to be freely raised and lowered via a fulcrum shaft 20 of this bracket 18 by a hydraulic cylinder 21 for raising and lowering. In addition, the first
As shown in the figure, when the composite leader 19 is defeated,
As shown in FIGS. 3 and 4, the leader receiving portion 15 having an L-shaped cross section restrains and supports the left and right sides.

5 is a partially cutaway enlarged side view of the composite leader 19, FIG. 6 is a sectional view taken along the line - in FIG. 5, FIG. 7 is a sectional view taken along the same line, and FIG. 8 is a sectional view taken along the line -
FIG. Note that FIG. 6 shows a cross section when the movable base 12 is at the uppermost end with respect to the main leader 30, and this corresponds to a view of the movable base 32 from below. Moreover, FIG. 7 corresponds to a cross-sectional view of the lower base 61 viewed from above.

The composite reader 19 includes a main reader 30 and a sub-reader 3 that is attached to the main reader 30 so as to be able to move forward and backward.
1 and also incorporates a movable base 32 connected to the sub-leader 31 so as to be movable in the longitudinal direction thereof.

The main leader 30 serves as an outer frame 33 located at both ends of the composite leader 19 in the width direction, and is made by arranging a pair of main members 34 having concave cross sections parallel to each other with their concave portions facing each other. There is. Then, connecting members 35 are stretched over the backs of the upper and lower ends of these main members 34 to integrate the main members 34 together. Therefore, the main leader 30 has a flat concave space that is wide in width and short in the front and rear directions. Further, on the back of the main leader 30, there is a sub-leader cylinder receiving bracket 36 for pivotally mounting the base end of a cylinder that moves the sub-leader 31 up and down.
A tilting fulcrum shaft bracket 37 and a tilting cylinder rod receiving bracket 38 are provided in order from the bottom. The cylinder receiving brackets 36 for the sub-leader are a pair located approximately at the center of the connecting member 35 of the main leader 30, as shown in FIG. As shown in FIGS. 5 and 7, the lower end of the sub-leader hydraulic cylinder 42 is pivotally connected by pin connection. A leader leg 39 is connected to the lower end of the main leader 30 by a support shaft 41, and the leader leg 39 can be rotated in the vertical direction in FIG. Furthermore,
A sub-leader hydraulic cylinder 42 for moving the sub-leader 31 is provided on the back of the main leader 30 so that its axis is parallel to the axis of the main leader 30, and its base end is pivotally connected to the bracket 36. .

The sub-leader 31 is installed in a space defined by each main member 34 of the main leader 30 so as to be vertically movable in FIG. As shown in FIGS. 6 to 8, the sub-leader 31 has a pair of frames 31a each having a concave cross-sectional shape, which are arranged parallel to each other in the width direction. Two guide wheels 43 are rotatably provided on the lower end sides of these frames 31a, and these guide wheels 43 are connected to the main leader 30.
It is made possible to roll against the inner wall of the main material 34. Further, as shown in FIG. 6, a guide metal 44 is provided on the upper end side of the main member 34 to slidably guide the outer surface of the frame 31a. Therefore, the sub-leader 31 is connected to the guide wheel 43 and the guide metal 4.
4, it is connected to the main reader 30 at two points.

Further, as shown in FIG. 5, the sub-leader 31 is connected to a sub-leader hydraulic cylinder 42 by a bracket 45 provided on its back. When this secondary leader hydraulic cylinder 42 is operated, the sliding structure between the guide wheel 43 and the guide metal 44 causes the secondary leader 31 to move along the dashed-dotted line in FIG. 1 with respect to the main leader 30. It is possible to move up to the position shown by or to move down from this position to fit inside the main leader 30.

Furthermore, a movable base 32 is connected to the sub-reader 31 so as to be movable up and down in FIG. For this connection, as shown in FIG.
A wheel 32a is provided on the back side of the sub-leader 31, and the wheel 32a is incorporated in the sub-leader 31 so that it can roll freely by utilizing the concave cross section of the frame 31a.

The movable base 32 is a box-shaped structure that includes two bases 60 and 61 each having a concave portion large enough to wrap around a utility pole, and that both ends of the bases 60 and 61 in the width direction are integrally connected by an outer frame 62. It is something. A pair of brackets 64 are provided at both ends of the back in the width direction, as shown in FIG. These axes 63
enters into the frame 31a of the sub-leader 31, and a wheel 32a rotatably provided on the shaft 63 is able to roll while contacting the inner wall of the frame 31. The lower base 61 of the moving base 32
Two utility pole receiving rollers 65 are provided in the recessed part in a V shape, and the utility poles to be loaded are received by these rollers 65. Furthermore, each of the left and right outer frames 62 has mounting holes 8 for hanging auxiliary tools such as hooks and pulleys.
Leave 0.81 open.

In addition, it is preferable that the upper base 61 is configured such that a driving part of the earth auger, an auxiliary bracket for pillar erection, etc. can be attached when excavating with the earth auger or building a composite pillar.

Sprockets 46 and 47 are attached to the upper and lower ends of the sub-leader 31 by brackets 48 and 49, respectively. These sprockets 46,
Two pieces 47 are arranged at two positions in the width direction when viewed from the front (when viewed from the right side in FIG. 5). And the sprocket 46 at the upper end and the lower end,
Chains 69a and 69b for each set of 47
are applied to each of them.

Further, chain fixing parts 66 and 67 are provided at the upper end of the main leader 30 and the upper bracket 64 of the movable base 32, respectively.
are connected by the aforementioned chain 69a, and this chain 69a is wound around the sprocket 46 at the upper end of the sub-leader 31. In addition, the moving base 32
A chain fixing portion 68 is also provided at a position lower than the lower bracket 64 and the upper end of the main leader 30, respectively.
69, these fixed parts 68 and 69 are connected by a chain 69b, and this chain 69b
is wound around the sprocket 47 at the lower end of the sub-leader 31.

With the above-mentioned connection structure between the main reader 30 and the sub-leader 31, when the sub-leader hydraulic cylinder 42 is operated, the sub-leader 31 rises to the height shown by the dashed line in FIG. At this time, moving base 3
2 is integrated with the sub-leader 31, so this movable base 32 also rises by an amount equal to the rising height of the sub-leader 31. As the sub-leader 31 rises, the sprockets 46, 4
7 also rises, and since the chain fixing parts 66 and 69 are at the rest position, the chains 69a and 69
b also runs, rotating both sprockets 46 and 47 counterclockwise in FIG. Therefore, the movable base 32 moves from the lowest position in FIG. 5 to the highest position shown by the dashed line in FIG. That is, in addition to the rise of the sub-leader 31, the movement base 32 is also increased relative to this sub-leader 31.
rises, and a stroke of the movable base 32 that is longer than the stroke of the sub-cylinder hydraulic cylinder 42 can be obtained.

FIG. 9 is an enlarged side view of the proximal end of the main leader 30;
Figure 10 is a sectional view taken along the - line in Figure 9;
FIG. 1 is a sectional view taken along the - line in FIG. 10.

A support shaft 4 is provided at the lower end of the main leader 30 in the width direction.
1 is rotatably incorporated, and leader legs 39 are attached to both ends of this support shaft 41 so as to be rotatable from a grounding position to a position along the side surface of the main leader 30.
Moreover, in the part surrounded by the leader leg 39,
A roller plate 40 having rollers 54 for receiving the utility pole A in the same way as the rollers 65 of the moving base 32 is provided. This roller plate 40 can be rotated counterclockwise within a range of 180 degrees from the state shown in FIG.
Then, as shown in FIG. 10, the roller plate 4
0 is provided with notches 40a at two locations in the width direction, and a pin 53 that fits into the notches 40a is inserted into the main leader 3.
Fix it to the lower end of 0. Furthermore, when the roller 54 is in the position of receiving the utility pole A as shown in FIG.
A fixture 53a is connected to the upper end of the pin 53 by screwing or the like, thereby restraining the posture of the roller plate 40. Further, on the back side of the support shaft 41, there is also a pin 52 that passes through the notch 40a from bottom to top.
is provided, and when the roller plate 40 is not used, it is reversed counterclockwise as shown in FIG. 11 so that the pin 52 passes through the notch 40a. By connecting a fixture 52a to the upper end of this pin 52 by screwing or the like, the roller plate 40 can be locked in the retracted position.

Further, when the roller plate 40 is in the attitude shown in FIG. 10, the leader leg 39 is restrained in the ground contact attitude as shown in FIG. When the roller plate 40 is reversed to the retracted position, it is configured to be locked in an upright position along the side surface of the main leader 30.

In FIG. 1, reference numeral 85 indicates a stabilizing auxiliary leg that is detachably attached to the vehicle body frame 1 in order to widen the base during pillar erection work. The stabilizing auxiliary leg 85 is used by inserting and fixing an insertion end 85a into the front end of the vehicle body frame, and the other end is provided with wheels 85b for easy movement.

In the above configuration, the loading and transporting work of utility poles will be explained with reference to FIGS. 12 to 18. In addition,
Utility pole A is concrete pole A-1 and intermediate steel pipe A-2.
This is shown as an example of a combination of upper steel pipe A-3 and upper steel pipe A-3.

First, before loading the utility pole, the vehicle body frame 1 is aligned with the intermediate steel pipe A-2 and the upper steel pipe A-3 placed on the ground and stopped, and the left and right sides of the vehicle frame 1 are placed on the middle steel pipe A-2 and the upper steel pipe A-3, respectively. Two side auxiliary metal fittings 7
Attach 0. This side auxiliary metal fitting 70 is the thirteenth
As shown in the figure, the lower end is grounded and the upper end is fixed to the vehicle body frame 1 for use, and the upper end is provided with an insertion rod 70a that can be freely rotated in the direction of the arrow in the figure by a rotating shaft 70b. ing. And this insertion rod 7
0a is inserted into the holding hole of the side loading utility pole receiving part 16 of the support 16a shown in FIG. 1, and is fixed to the vehicle body frame 1 in an oblique position as shown in FIG.

Next, the wire 72 from the winch 14 is wound around the outer peripheral surface of the intermediate steel pipe A-2 on the ground. Then, when the winch 14 is driven to wind up the wire 72, the intermediate steel pipe A-2 rides on the side loading auxiliary fitting 70, and finally, as shown by the dashed line in FIG. 12, the intermediate steel pipe A-2 is loaded on the side. It fits inside the utility pole receiving part 16. In addition, upper steel pipe A
-3 can also be placed on the side loading utility pole receiving part 16 on the other side by the same operation as shown in FIG.

To load concrete column A-1, the 14th
The composite leader 19 is placed in an upright position as shown in the figure, and a supporting metal fitting 73 shown in FIG. 15 is prepared as an auxiliary member. This support fitting 73 has two free-standing legs, and the upper ends of these legs are tied together by a chain 73a.

As shown in Fig. 14, the movable base 32 is set at the lower end of the concrete pillar A-1 placed on the ground.
Connect wire B to and hang this wire B around concrete column A-1. Then, when the sub-leader hydraulic cylinder 42 is actuated to raise the sub-leader 31 and the moving base 32, the concrete column A-1 leaves the ground as shown by the dashed line in the same figure, and at this time, the concrete column A-1 separates from the vehicle body frame 1. A supporting metal fitting 73 is placed under the concrete pillar A-1 at an appropriate distance, and is supported by a chain 73a.

After the concrete column A-1 is supported by the support fittings 73, the composite leader 19 is laid down on the vehicle body frame 1 by the raising/lowering hydraulic cylinder 21, as shown in FIG. 16. During this work, the roller plate 40 at the lower end of the composite leader 19 is locked in a position protruding in front of the main leader 30 as shown in FIGS. Set the position so that it follows the direction.
After this setting, when you defeat composite leader 19,
The leading end of the concrete pillar A-1 gradually comes to rest on the roller plate 40, and is supported by two receiving rollers 54 provided on the roller plate 40. At the same time, the mobile base 3
The concrete column A-1 is also supported by the second roller 65. On the other hand, when the composite leader 19 is tilted toward the vehicle body frame 1, it is supported by a pair of leader receiving portions 15 provided near the front of the vehicle body frame 1. That is, FIGS. 3, 4 and 16
As shown in FIG. 17, when the composite leader 19 is in the lying position, the base end side of the main leader 30 is pivotally supported by the tilting fulcrum shaft bracket 37.
Both sides of the distal end of the main leader 30 in the width direction are supported by a leader receiving portion 15 having an L-shaped cross section. Therefore, the main leader 30 is supported in a stable position on the traveling vehicle 1, and moves the concrete column A-1 mounted on the rollers 54 and 65 to the moving base 32.
By utilizing the movement of the vehicle 1, it becomes possible to carry out the mounting work on the traveling vehicle 1.

After placing one end of the concrete column A-1 on the lower end of the composite leader 19 in this way, the hanging bracket 75
is hung on the lower end of concrete column A-1 as shown in Fig. 17. Then, the wire 76 of the loading winch 14 is hung on a pulley 77 attached to the moving base 32, and a hook 78 is provided at the tip of the wire 76.
8 and the double wire 76 attached to the hanging metal fitting 75 side. When the loading winch 14 is activated to wind up the wire 76, the concrete column A-
1 gradually advances toward the front of the vehicle body frame 1 by the rolling of the receiving rollers 54 of the roller plate 40 and the rollers 65 of the movable base 32, as shown in FIG. Due to such movement of the concrete column A-1, after its center of gravity shifts to the receiving roller 54, the support fitting 7
Remove 3.

After this, the loading winch 14 continues to operate, and the concrete column A-1 is sent to the upper end side of the composite leader 19. Simultaneously with the loading by the loading winch 14, the moving base 32 is moved to completely load the concrete column A-1 as shown in FIG. 17. That is, concrete column A-1
After the tip of the is placed on the movable base 32,
When the sub-leader hydraulic cylinder 42 is operated, the sub-leader 31 moves to the right in FIG. 17, and at the same time the moving base 32 also moves in the direction of loading the concrete column A-1. Therefore, as shown in the figure, the secondary leader 31 will eventually advance to the fully extended position, and the concrete column A-1 will be moved to the composite leader 19.
is loaded on top of the

In this way, the concrete column A-1, the intermediate steel pipe A-2, and the upper steel pipe A-3 can be loaded on the vehicle body frame 1 as shown in FIG. 18. Then, by driving the vehicle body frame 1 in the illustrated state, it can be transported to the pole erection site.

At the pole erection site, the concrete column A-1 is first inserted into the pre-drilled shaft in the opposite manner to the loading process, and then the intermediate steel pipe A-1 is erected.
2 and upper steel pipe A-3 will be erected in this order. Here, the force when lowering concrete column A-1 is
This is achieved by the wire 69b running in the direction of pulling down the movable base 32 when the sub-leader hydraulic cylinder 42 contracts. That is, wire 6
9b moves from the state shown in FIG. 17 to the state shown in FIG. 16, so it starts to pull the moving base 32 downward, and by using this, it moves in the direction of lowering the concrete column A-1. can be done.

〔Effect of the invention〕

The present invention can achieve the following effects.

Loading, transporting, and unloading of urban composite poles can be carried out with one machine and in an integrated process without reloading the poles.

It is possible to eliminate the need for assistance from other vehicles such as trucks and cranes, thereby reducing the time and cost required for construction work.

Loading, transporting, and unloading of utility poles can be performed automatically, resulting in labor savings.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the working vehicle of the present invention, FIG. 2 is a plan view taken in the direction of the - arrow in FIG. 1, and FIG. 3 is a front view taken in the direction of the - arrow in FIG. FIG. 4 is a rear view as viewed from the - line arrow in FIG. 1, and FIG. 5 is a partially cutaway enlarged side view of the composite reader.
Figure 6 is a sectional view taken along the - line in Figure 5, Figure 7 is a sectional view taken along the - line in Figure 5, and Figure 8 is a sectional view taken along the - line in Figure 5.
9 is an enlarged side view of the proximal end of the main leader, and FIG. 10 is a sectional view taken along the - line in FIG.
11 is a cross-sectional view of the line shown in FIG. 10.
12 is a rear view showing side loading of steel pipes, FIG. 13 is a front view of a side auxiliary fitting used for side loading, and FIG. 14 is a side view showing the initial stage of loading a concrete column. Figure 15 is a front view of the support fittings used for loading concrete columns.
FIG. 6 is a side view of the initial stage of loading the concrete column onto the composite leader, FIG. 17 is a side view of the completed loading of the concrete column, and FIG. 18 is a side view of the completed loading of the concrete column and steel pipe. 1...Vehicle frame, 19...Composite leader, 30...
Main leader, 31... Sub-leader, 32... Moving base, A... Utility pole, A-1... Concrete pole, A
-2...middle steel pipe, A-3...upper steel pipe.

Claims (1)

[Scope of Claims] 1. A main leader disposed on a traveling vehicle so as to be able to rise and fall, a sub-leader movably connected to the main leader in a multi-stage telescoping type, and movable in the direction of expansion and contraction of the main leader and the sub-leader. a movable base for receiving a utility pole connected to the sub-leader, one end of which is fixed to the main leader, and when the main leader is in an upright position, the movable base is movable around the upper end of the sub-leader, and the other end is moved as described above; A chain member connected to a base is provided, one end of which is fixed to the main leader, and the other end of which is connected to the movable base so as to be movable around the lower end of the sub-leader when the main leader is in an upright position. provided, when the sub-leader moves with respect to the main leader, the movable base is movable in the same direction as the moving direction of the sub-leader, and a utility pole can be received on the proximal end of the main leader and the movable base. a roller or a roller rotatably provided therein, a leader receiving portion for receiving both ends of the main leader in the width direction when the main leader is in a reclined position, and a winch is provided on the running vehicle, A wire wound around the output shaft of the winch is routed to the base end side of the main leader via a pulley provided on the moving base, and a hanging metal fitting for receiving the bottom side of the utility pole is connected to the tip of the wire, A work vehicle capable of loading utility poles, characterized in that the utility pole can be loaded by being received by the rollers of the main leader and the rollers of the moving base when the winch is hoisting wires and the sub-leader is extending.