JPH05304709A - Work wagon for extending cable - Google Patents

Abstract

PURPOSE:To provide a work wagon for extending cables which can simultaneously support four cable drums and, at the same time, can quickly and surely load/unload the four cable drums on/from the four supporting devices. CONSTITUTION:Four cable drum supporting devices 2 each of which is composed of a fixing and driving posts 3 and 4 are arranged on the front and rear sides and the left and right sides on the bed of the title wagon. A through shaft 20 is passed through the center of each cable drum D and the drum D is put on a saddle. The position of the drum D in the longitudinal direction is decided by moving the drum D in the front-rear direction along elevating/ lowering rails and the supporting height of the drum D is decided by elevating or lowering the rails. When the drum D is positioned, a spline shaft is protruded and put on the spline putting section of the shaft 20 and, at the same time, a sliding shaft is pushed out and inserted into the bearing 31 of the post 3. When the spline shaft is retreated, the sliding shaft is restored by means of a spring and the drum D can be removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle used for winding a cable for sending out or removing the cable from a cable drum in a work for extending a cable between electric poles.

[0002]

2. Description of the Related Art In the cable drawing work, a drawing work vehicle in which a cable drum is pivotally supported on a carrier is used. Generally, wire-drawing work vehicles are placed on both sides of the wire-drawing diameter, a new cable to be drawn is sent from the cable drum on one wire-drawing work vehicle, and the cable is removed to the cable drum on the other wire-drawing work vehicle. Take up the old cable or tow wire to be wound up. As a conventional wire drawing work vehicle, there is known one in which two cable drum supporting devices are installed side by side on a loading platform (for example, Japanese Utility Model Laid-Open No. 53-73493). Such a wire-drawing work vehicle can wire two cables at the same time. However, in the wire-drawing work in which four cables are simultaneously installed in parallel, the wire-drawing work vehicle is also required to have four cable drum supporting devices. In order to meet this requirement, it is necessary to install the cable drum support devices in the front, rear, left and right, but in the conventional wire drawing work vehicle, when the cable drum support devices are arranged in the front and rear,
Installation of the cable drum becomes difficult. Further, in the above-described conventional wire-drawing work vehicle, when the cable drum is attached to or detached from the parallel arm, the screw must be tightened or loosened using a tool, which is not easy.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention provides a cable drawing work vehicle in which the cable drums can be quickly and surely attached to and detached from each of the cable drum supporting devices which are installed side by side on the bed. The task is to do.

[0004]

According to the present invention, at least two sets of fixed posts 3 and drive posts 4 are provided on the bed 1 so as to face each other on the left and right, and between the fixed posts 3 and the drive posts 4. In addition, an elevating rail 5 is provided so as to extend in the front-rear direction, a cable drum D is placed on the elevating rail 5, and a movable saddle 12 is provided along the elevating rail 5 so as to be movable in the front-rear direction. A moving device 13 for moving the saddle 12 in the front-rear direction by a predetermined distance and stopping it between the two sets of front and rear fixed posts 3 and drive posts 4, respectively.
And a lifting device 6 for lifting the lifting rails 5 so as to lift the cable drums D to a predetermined shaft support height on the side of the lifting rails 5, while penetrating the center of each cable drum D. A detachable through-shaft 20 is provided on the shaft cylinder 21. The through-shaft 20 includes a shaft cylinder 21 and a sliding shaft 22 that is slidably inserted inside the shaft cylinder 21. A spline fitting portion 23 is provided, and the sliding shaft 22 constantly urges the end portion in a direction in which the end portion is retracted into the barrel 21 so that each drive post 4 can be horizontally retracted to the fixed post 3 side by a hydraulic mechanism. Further, a spline shaft 24 is rotatably provided by a motor, and when the spline shaft 24 is projected, the spline shaft 24 is fitted into the spline fitting portion 23 of the shaft cylinder 21, and one end of the sliding shaft 22 is pushed and the other end thereof is pressed. Project from the other end Configured to allow bets, each fixing post 3, and a position facing the spline shaft 24, the barrel 2
1 is provided with a bearing 31 capable of receiving the other end of the sliding shaft 22 and the two cable drums D are detachably mounted between the front and rear two sets of the fixed post 3 and the drive post 4 to extend the cable drawing work vehicle. Configured.

[0005]

In the cable drawing work vehicle of the present invention, the cable drum D is placed on the moving saddle 12 arranged on the rear side of the loading platform 1, and the moving saddle 12 is moved to the lifting rail 5 by the moving device 13 such as a hydraulic mechanism. Move forward along
It is brought in between the pair of shaft supporting devices of the cable drum supporting device 2 in front of the luggage carrier 1, that is, the fixed post 3 and the drive post 4. The cable drum D is placed on the movable saddle 12, passes through the fixed posts 3 and the drive posts 4 of the cable drum supporting device 2 behind the loading platform 1 without difficulty, and moves to the cable drum supporting device 2 in front of the loading platform 1. And
The cable drum D is moved by the lifting device 6 such as a hydraulic mechanism.
Lift up to the specified shaft support height. The penetrating shaft 20 is attached to the cable drum D in advance. Cable drum D
Is raised to the shaft supporting height, the three shaft centers of the penetrating shaft 20, the spline shaft 24 of the drive post 4 and the bearing 31 of the fixed post 3 are aligned. In this state, the hydraulic mechanism is operated to move the spline shaft 24 from the drive post 4 to the fixed post 3
Project horizontally to the side. The spline shaft 24 is the barrel 21.
Is fitted to the spline fitting part 23 of the sliding shaft 22
1 is pushed, the other end is projected from the other end of the barrel 21, and is inserted into the bearing 31 of the fixed post 3. By rotating the spline shaft 24 with the motor 28, the cable drum D can be rotated together with the penetrating shaft 20. Then
The elevating rail 5 and the moving saddle 12 are restored, and the same operation is performed to mount the cable drum D on the cable drum supporting device 2 behind the loading platform 1. In this way, four cable drum supporting devices 2 can be installed on the front, rear, left and right of the loading platform 1. When removing the cable drum D, the saddle 12 is moved up to a position where it abuts under the cable drum D, and the spline shaft 24 is retracted.
At the same time, the sliding shaft 22 is returned by the spring 32, the end of the sliding shaft 22 is retracted into the barrel 21, and the fixed post 3 is disengaged from the bearing 31. Then, the saddle 12 is lowered to remove the cable drum D. When removing the cable drum D, the rear one should be removed first.

[0006]

An embodiment of the present invention will be described with reference to the drawings. 1 is a front view of a cable drawing work vehicle, FIG. 2 is a plan view of a cable drawing work vehicle, FIG. 3 is a front view of a cable drum supporting device, FIG. 4 is a vertical cross-sectional front view of a drive post, and FIG. 5 is a drive post. FIG. 6 is a cross-sectional plan view of the through shaft, FIG. 6 is a front view of the lifting rail, FIG. 8 is a plan view of the lifting rail, FIG. 9 is a side view of the lifting rail, and FIG. 10 is a front view of the moving saddle. FIG. 11 is a side view of the mobile saddle.

As shown in FIGS. 1 and 2, four cable drum supporting devices 2 for detachably supporting the cable drum D are provided on the loading platform 1 in the front, rear, left and right directions. The cable drum support device 2 includes a fixed post 3 and a drive post 4, which are a pair of left and right shaft support devices. As shown in FIGS. 2 and 7 to 9, a pair of elevating rails 5 are provided between the fixed post 3 and the drive post 4 so as to extend in the front-rear direction. Lift rail 5
Are connected at both ends by connecting rods to form a rectangular frame shape. On the side of the lifting rail 5, there are front and rear drive posts 4.
A lifting device 6 is provided between the two. The elevating device 6 includes a rectangular support frame 7 fixed vertically to the side of one rail 5, and a guide rail for guiding the support frame 7 so as to move up and down between the front and rear drive posts 4. 8 and a hydraulic cylinder 9 provided upright between the support frame 7 and the luggage carrier 1. The support frame 7 is connected to the elevating rail 5 via the arm 10 at the lower end.
The guide rails 8 are vertically fixed to opposite side surfaces of the front and rear drive posts 4, and guide blocks 11 on both upper sides of the support frame 7 are slidably engaged with the guide rails 8.

A movable saddle 12 is provided on the elevating rail 5 so as to be movable back and forth along the rail. The moving saddle 12 has the cable drum D placed on the upper portion thereof and moves between the front and rear cable drum supporting devices 2.
That is, the moving saddle 12 is, as shown in FIGS.
It comprises a base 16 slidably engaged with the elevating rail 5 and a saddle body 17 provided thereon, and the saddle body 17 is pivotally attached to the base 16 by a pin 18 at the front. A spring 33 is provided on the base 16. The spring 33 has a spring force capable of supporting the saddle body 17 on which the cable drum D is placed. A limit switch (not shown) is provided near the spring 33. Then, the saddle body 17 rises,
A part of the through shaft 20 described later is provided with a stopper 34 for the posts 3 and 4.
When the load on the saddle body 17 is greater than the weight of the cable D and the spring 33 is compressed, the limit switch operates to stop the oil supply to the hydraulic cylinder 9. A hydraulic cylinder 19 is provided between the saddle body 17 and the luggage carrier 1, and the saddle body 17 can be erected and tilted by expanding and contracting the hydraulic cylinder 19. A moving device 13 for moving the saddle 12 in the front-rear direction by a predetermined distance includes a hydraulic cylinder 14 and a chain 15 (FIGS. 7, 8 and 9). The hydraulic cylinder 14 is fixed to the middle part of the two lifting rails 5 in parallel with them,
The rods 14a and 14b are alternately projected from both ends. Chain sprockets 14c and 14d are pivotally supported at the tips of the rods 14a and 14b. The chain 15 is stretched between the intermediate portion of the elevating rail 5 and the front and rear ends of the moving saddle 12, and the chain sprockets 14 c and 14 d are meshed with the inside of the chain 15.
Therefore, the movable saddle 12 can be moved back and forth by a predetermined distance by moving the rods 14a and 14b in and out. Then, in the maximum protruding state of the rod 14a or 14b, the cable drum D on the moving saddle 12 is arranged at a position corresponding to the front or rear cable drum supporting device 2,
Further, when the hydraulic cylinder 9 is in the maximum extension state, the cable drum D on the moving saddle 12 is arranged at the shaft supporting height position.

In order to pivotally support the cable drum D on the cable drum supporting device 2, a through shaft 20 is mounted at the center of the cable drum D. As shown in FIG. 6, the through shaft 20
Is composed of a shaft cylinder 21 and a sliding shaft 22 which is slidably inserted in the shaft cylinder 21 in the axial direction. A spline fitting portion 23 is provided on one end side of the shaft cylinder 21. Sliding shaft 22
6, the end of which can be projected and retracted to the left side in FIG. 6, and is normally pulled in by the spring 32, but is axially supported by the bearing 31 of the fixed post 3 in the protruding state. The penetrating shaft 20 is
Cable drum D via collar 29 and spacer 30
Is fixed to the central hole of the. By changing the collar 29 and the spacer 30, it can be applied to the cable drum D of various sizes. As shown in FIGS. 4 and 5, each drive post 4 is provided with a spline shaft 24 that is capable of horizontally projecting and retracting toward the bearing 31 of the fixed post 3 and is rotatable. The spline shaft 24 is connected to a hydraulic cylinder 26 via a link 25, and the hydraulic cylinder 26
It can be moved horizontally by expanding and contracting. The spline shaft 24 has a chain sprocket 27, and is connected to a hydraulic motor 28 via a chain that meshes with the chain sprocket 27. Then, when the lifting rail 5 rises,
The cable drum D on the movable saddle 12 has a through shaft 2
0 is placed on the axis of the bearing 31 and the spline shaft 24. Then, when the spline shaft 24 projects from the drive post 4, the spline shaft 24 is fitted into the spline fitting portion 23 of the barrel 21, and the sliding shaft 22 is pushed out and inserted into the bearing 31. In this state, the spline shaft 24 rotates, and the cable drum D rotates via the shaft 20.

In the cable drawing work vehicle of this embodiment, the cable drum D is mounted on the movable saddle 12 arranged on the rear side of the loading platform 1, and the rod 14b of the hydraulic cylinder 14 is mounted.
Is extended and the movable saddle 12 is moved forward along the elevating rail 5. The cable drum D has a through shaft 20 in advance.
Put on. The moving saddle 12 stops between the fixed post 3 and the drive post 4 of the cable drum support device 2 in front of the luggage carrier 1. During this time, the cable drum D is placed on the movable saddle 12 and passes through between the fixed post 3 and the drive post 4 at the rear of the loading platform 1 without difficulty. In this state, the hydraulic cylinder 9 is extended to raise the elevating rail 5 together with the cable drum D and the moving saddle 12. When the movable saddle 12 rises and a part of the through shaft 20 of the cable drum D mounted on the movable saddle 12 contacts the stoppers 34 of the posts 3 and 4, and the saddle body 17 receives a load more than the weight of the cable D, the spring 33 is compressed, the limit switch operates, and the oil supply to the hydraulic cylinder 9 is stopped. With this, the three axes of the through shaft 20, the spline shaft 24, and the bearing 31 are aligned with each other. In this state, when the hydraulic cylinder 26 is extended, the spline shaft 24 moves the spline fitting portion 2 of the barrel 21.
3, the sliding shaft 22 is pushed out at the same time, and the bearing 31
Is inserted into. The cable drum D is now mounted on the front cable drum support device 2. Next, the elevating rail 5 and the movable saddle 12 are restored, and the same operation is performed to mount the cable drum D on the cable drum supporting device 2 behind the loading platform 1. In this way, after the cable drums D are mounted on the four cable drum supporting devices 2 on the front, rear, left and right of the loading platform 1, the hydraulic motor 28 is rotated to rotate the spline shaft 2
4. Rotate the cable drum D via the shaft 20 to feed the cable wound around it, or wind the cable, pulling wire or the like around it.

When removing the cable drum D from the cable drum supporting device 2, first, the moving saddle 12 is brought to the position of the rear cable drum supporting device 2 and is raised to push the cable drum D from below. By this pushing up, a part of the through shaft 20 of the cable drum D abuts on the stopper 34, and when a load more than the weight of the cable D is applied to the saddle body 17, the spring 33 is compressed,
The limit switch operates, the oil supply to the hydraulic cylinder 9 is stopped, and the moving saddle 12 stops rising. After this,
Retract the spline shaft 24 to restore the sliding shaft 22,
The engagement with the cable drum supporting device 2 is released. Then, when the movable saddle 12 is lowered and the hydraulic cylinder 19 is extended, the saddle body 17 is erected, and the cable drum D on the saddle body 17 rolls down on the luggage carrier 1. Then, the movable saddle 12 is restored, brought to the position of the front cable drum supporting device 2, and the same operation is performed to remove the cable drum D.

[0012]

As described above, in the present invention, at least two sets of fixed posts 3 and drive posts 4 are provided on the bed 1 so as to face each other in the left and right directions, and the fixed posts 3 and the drive posts 4 are provided. An elevating rail 5 is provided so as to extend in the front-rear direction, and a cable drum D is placed on the elevating rail 5 and a movable saddle 12 is provided so as to be movable in the front-rear direction along the cable drum D. A moving device 13 for moving the movable saddle 12 in the front-rear direction by a predetermined distance to stop the two sets of front and rear fixed posts 3 and drive posts 4, respectively.
And a lifting device 6 for lifting the lifting rails 5 so as to lift the cable drums D to a predetermined shaft support height on the side of the lifting rails 5, while penetrating the center of each cable drum D. A detachable through-shaft 20 is provided on the shaft cylinder 21. The through-shaft 20 includes a shaft cylinder 21 and a sliding shaft 22 that is slidably inserted inside the shaft cylinder 21. A spline fitting portion 23 is provided, and the sliding shaft 22 constantly urges the end portion in a direction in which the end portion is retracted into the barrel 21 so that each drive post 4 can be horizontally retracted to the fixed post 3 side by a hydraulic mechanism. Further, a spline shaft 24 is rotatably provided by a motor, and when the spline shaft 24 is projected, the spline shaft 24 is fitted into the spline fitting portion 23 of the shaft cylinder 21, and one end of the sliding shaft 22 is pushed and the other end thereof is pressed. Project from the other end Configured to allow bets, each fixing post 3, and a position facing the spline shaft 24, the barrel 2
1 is provided with a bearing 31 capable of receiving the other end of the sliding shaft 22 and the two cable drums D are detachably mounted between the front and rear two sets of the fixed post 3 and the drive post 4 to extend the cable drawing work vehicle. Since the cable drum D is configured as described above, the cable drum D can be easily, quickly and surely attached / detached to / from each of the cable drum supporting devices 2 installed side by side on the loading platform in the front-rear direction and the left-right direction, and four cables can be simultaneously extended. It has the effect of being able to.

[Brief description of drawings]

FIG. 1 is a front view of a cable drawing work vehicle.

FIG. 2 is a plan view of a cable drawing work vehicle.

FIG. 3 is a front view of a cable drum supporting device.

FIG. 4 is a vertical sectional front view of a drive post.

FIG. 5 is a cross-sectional plan view of a drive post.

FIG. 6 is a sectional view of a through shaft.

FIG. 7 is a front view of a lifting rail.

FIG. 8 is a plan view of a lifting rail.

FIG. 9 is a side view of the lifting rail.

FIG. 10 is a front view of a mobile saddle.

FIG. 11 is a side view of the moving saddle.

[Explanation of symbols]

 1 Loading Platform 2 Cable Drum Support Device 3 Fixed Post (Axial Support Device) 4 Drive Post (Axial Support Device) 5 Elevating Rail 6 Elevating Device 12 Moving Saddle 13 Moving Device 20 Through Shaft 21 Shaft Tube 22 Sliding Shaft 23 Spline Fitting Part 24 Spline shaft 26 Hydraulic cylinder 27 Sprocket 31 Bearing 32 Spring D Cable drum

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yuuji Inoue 6-5-19 Minami-Shinagawa, Shinagawa-ku, Tokyo Sanwa Techk Co., Ltd.

Claims (1)

[Claims] 1. A fixed post and a drive post are opposed to each other on the cargo bed, and at least two sets are provided in front and back. An elevating rail is provided between the fixed post and the drive post so as to extend in the front-rear direction. On this lifting rail, a cable drum is placed on the upper part, and a movable saddle is provided so as to be movable in the front-rear direction along the cable drum. The movable saddle is moved in the front-rear direction by a predetermined distance to drive two sets of front and rear fixed posts. A moving device for stopping each of the posts is provided, and an elevating device for elevating the elevating rail to elevate the cable drum to a predetermined shaft supporting height is provided on a side of the elevating rail, while A detachable through shaft is provided so as to pass through the center of the cable drum, and the through shaft is composed of a shaft cylinder and a sliding shaft that is slidably inserted in the shaft cylinder in the axial direction. A spline fitting part is provided on one end side of the drive shaft, and the sliding shaft constantly urges the end part in a direction to retract the end part into the barrel, and each drive post is horizontally retracted to the fixed post side by a hydraulic mechanism. A spline shaft is rotatably and rotatably provided by a motor. When the spline shaft is projected, the spline shaft is fitted to the spline fitting portion of the barrel, and one end of the sliding shaft is pushed to cause the other end to be the other end of the barrel. It is configured so that it can be projected from each of the fixed posts,
A bearing is provided at a position facing the spline shaft and capable of receiving the other end of the sliding shaft protruding from the barrel, and two cable drums are detachably attached between two sets of front and rear fixed posts and a drive post. A cable extension work vehicle characterized by the above.