JP3322504B2 - Aerial work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerial work vehicle for working at a high place such as an overhead distribution line (an overhead line).

[0002]

2. Description of the Related Art Generally, overhead lines (trolley lines) such as bullet trains.
It is well known that is supported by a movable bracket fixed to a utility pole via an auxiliary suspension line and a suspension line. It is also well-known that fixed brackets such as overhead wires supported by the movable bracket and the movable bracket itself deteriorate over time, so that it is necessary to replace not only regular inspections but also new ones every predetermined number of years. .

[0003] At the time of the above inspection and replacement, a bamboo ladder is conventionally hung on a telephone pole or a suspension line, and an operator climbs the bamboo ladder to inspect the bamboo ladder, removes and attaches a fixing bracket and a movable bracket, and also mounts the movable bracket. Was raised and lowered using a manual winch.

[0004]

As described above, since all of the replacement work and the like rely on human labor and human power, it takes a lot of time for the work, and there is a problem in securing human labor because it is a so-called 3K work. In this case, the work efficiency was significantly reduced.

It is an object of the present invention to provide an aerial work vehicle capable of improving work safety and greatly improving efficiency by mechanization.

[0006]

In order to solve the above-mentioned problems, an aerial work vehicle according to the present invention is a truck-type aerial work vehicle equipped with a track running wheel that can be stored therein, which is lifted and lowered on a carrier. A second work table is provided on the first work table provided so as to be capable of turning so as to be able to move up and down and horizontally, and on the first work table.
Vertical and horizontal movement of the overhead wire support device that can temporarily hold the overhead wire
And a lane from the overhead line on the loading platform.
Measure the position of the pantograph and the overhead wire
An overhead wire measuring device is provided.

[0007]

[0008]

According to the above construction, the worker can work safely and quickly on the second workbench securely positioned at the optimum work position.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a truck-type aerial work vehicle 1 is equipped with a track running wheel 2 including a pair of left and right front wheels and a rear wheel as a part of a chassis.
It constitutes a so-called rail-land vehicle.

The aerial work vehicle 1 includes a pair of left and right front and rear outriggers 3 and a lateral movement device 4 for laterally moving the vehicle body.
And a turning device 5 for turning the vehicle body.

A first work table 8 is provided on a loading platform 6 of the aerial work vehicle 1 via a post 7 so as to be able to move up and down and turn, and a second work table is mounted on the first work table 8. 9 is provided so as to be able to move up and down and move horizontally (slide along the first worktable 8).

A third workbench 10 is attached to one side of the first workbench 8 so as to be retractable (foldable) as an auxiliary, while an overhead wire support device 11 capable of temporarily holding the overhead wire is vertically mounted on the other side. And it is equipped with horizontal movement.

Further, a crane 12 is mounted on the loading platform 6 of the aerial work vehicle 1, and a pantograph 13 for grounding the overhead line to the rail R is provided, and an overhead line measuring device 14 capable of measuring the position of the overhead line. Will be equipped.

In the drawing, reference numeral 15 denotes a step attached to the first work table 8, and 16 denotes a handrail attached to the second work table 9.
Reference numeral 7 denotes a ladder mounted on the bed 6, and reference numeral 18 denotes a seat attached to the bed 6. In the figure, D is a utility pole, B is a movable bracket, and a suspended line, an auxiliary suspended line, and a overhead line (not shown) are respectively supported on the movable bracket B via fixing brackets or the like.

The track running wheels 2 are, as shown in FIG.
A fixed cylinder 20 supported on the vehicle body side is rotatably supported via a support bracket 23 at a lower end of a movable cylinder 22 which can slide up and down by expansion and contraction of an elevating cylinder 21.
In the figure, reference numeral 24 denotes a slide plate. Therefore, when the aerial work vehicle 1 travels on the road, the lifting cylinder 21 is contracted and the track running wheel 2 is stored.

As shown in FIG. 5, the turning device 5 turns inside a pair of left and right fixed cylinders 25 supported on the vehicle body side to the lower end of a movable cylinder 27 slidable up and down by expansion and contraction of a lifting cylinder 26. A table 28 is fixed, and a support frame 30 that can be horizontally and fixedly mounted on a pair of left and right rails R via a swivel bearing 29 is connected to the center of the turn table 28. Therefore, when the vehicle body is turned, the lifting table 26 is turned by an appropriate drive device after the elevating cylinder 26 is extended and the support frame 30 is laid and fixed on the pair of left and right rails R.

As shown in FIG. 6, the first work table 8 and the second work table 9 are connected by a pair of left and right X-shaped links 31, and a pair of left and right X-shaped links 31 are connected to the movable end of the X-shaped link 31. The expansion and contraction of the lift cylinder 32 causes the second work table 9 to move up and down with respect to the first work table 8.

The second work table 9 includes a fixed frame 33 to which the X-shaped link 31 is connected and a movable frame 34 to which the handrail 16 is attached.
The movable frame 34 is horizontally moved (slid) with respect to the fixed frame 33 by the expansion and contraction of the slide cylinder 35 interposed between the four.

The post 7 comprises an outer cylinder 40 having a rectangular cross section connected to the loading platform 6 side and an inner cylinder 41 having a rectangular cross section connected to the first working table 8 side. Is moved up and down with respect to the outer cylinder 40 by the expansion and contraction of the outer cylinder 40, while the outer cylinder 40 turns on the carrier 6 by the rotation of the turning motor 43.

That is, as shown in FIGS. 7 and 8, the lower end of the post 7 is fixed at the lower end of the outer cylinder 40 to a support plate 44, and the support plate 44 pivots with respect to the carrier 6 via a pivot bearing 45. Supported as possible.

The inner race 45a of the swivel bearing 45 connected to the support plate 44 and the output shaft 43a of the swivel motor 43 fixed upward on the carrier 6 mesh with each other. Further, the tip of the piston rod 42a of the lift cylinder 42 is pin-connected to the support plate 44.

The lower end of the inner cylinder 41 is appropriately supported on the inner surface of the outer cylinder 40 via a pair of slide plates 46 and guide rollers 47. In FIG. 8, reference numeral 48 denotes a storage origin limit switch.

On the other hand, the upper part of the post 7 is shown in FIGS.
As shown in FIG. 5, the upper end of the inner cylinder 41 is fixed to the middle part in the left-right direction of the first worktable 8 by welding or the like, and the four outer surfaces are appropriately supported by guide rollers 49 attached to the upper end of the outer cylinder 40. Is done.

As shown in FIG. 11, in the overhead wire support device 11, a first boom 51 having an overhead wire support portion 50 has an auxiliary overhead wire support portion 53 and an overhead wire support portion 54 by expansion and contraction of a lift cylinder 52. The slider 57 supporting the second boom 55 via a bracket 56 can move up and down (vertically move) with respect to the second boom 55, and a guide provided on the first work table 8 by extension and contraction of a slide cylinder 58. It can be moved back and forth (horizontal movement) on the rail 59.

Further, the second boom 55 is rotated around the connecting point 61 with the slide cylinder 58 along the first worktable 8 in a state where the pin 60 with the bracket 56 is released. It can be stored horizontally.

Next, the aerial work vehicle 1 constructed as described above
12 and 13 will be described with reference to FIGS.

First, the aerial work vehicle 1 travels on the rail R via the track running wheels 2 and applies a parking brake when it arrives at a work point.

Next, after the lateral movement boom 3a is extended, the outrigger 3 is extended and stopped at a position 50 to 100 mm from the ground.

Next, after turning the turning motor 43 to turn the first worktable 8 (including the second worktable 9) by 90 °,
The parking brake is released and the aerial work vehicle 1 is moved to a position where the work can be easily performed (a position between the side of the worktable and the utility pole D is 200 to 300 mm). At this time, the worker has not yet got on the work table.

Next, after the parking brake is applied and the outrigger 3 is grounded, the movable frame 34 of the second work table 9 is slid by the extension of the slide cylinder 35.

Next, after the worker gets on the second work table 9, the first work table 8 is raised by the extension of the lift cylinder 42, and then the second work table 9 is raised by the extension of the lift cylinder 32. Stop at a position where it is easy to work.

Thus, the work of replacing the movable bracket B is performed in the following procedure. (1) Remove the hook of the overhead wire measuring device 14, raise the pantograph 13, and take the ground from the overhead wire (trolley wire) to the rail R. (2) Use the overhead wire measuring device 14 to confirm the current position of the overhead wire. (3) After moving and fixing the overhead wire support device 11 to the side of the movable bracket B, the suspension wire is fixed to the suspension wire support portion 50. (4) The metal fittings fixing the suspension wire to the movable bracket B are removed. (5) The auxiliary suspension line and the overhead line are removed from the bending metal fitting and fixed to the support portions 53 and 54, respectively. (6) The movable bracket B is supported by the crane 12. (7) Remove the mounting bracket of the movable bracket B. At this time, the operation is performed while sliding the movable frame 34 of the second work table 9. (8) The movable bracket B is dropped by the crane 12. (9) The new movable bracket B is lifted by the crane 12 and supported at the mounting position. (10) The movable bracket B is fixed to the utility pole D with the mounting bracket. (11) The crane 12 is stored. (12) The suspension wire is fixed to the movable bracket B. (13) Attach the auxiliary suspension wire and the overhead wire to the bending metal fitting. (14) Remove the suspension line and the auxiliary suspension line from the support portions 54 and 53, respectively, and store the overhead line support device 11. (15) The finishing position (height, deviation) of the overhead wire is confirmed by the overhead wire measuring device 14. Here, the work of replacing the movable bracket B is completed.

Thereafter, the first and second work tables 8 and 9 are lowered by the contraction of the lift cylinders 42 and 32, and then the movable frame 34 of the second work table 9 is moved to the slide cylinder 35.
Undo by shrinking

Next, the first worktable 8 is turned by the reverse rotation of the turning motor 43 to return to the running state.

Next, after the outrigger 3 is contracted and the lateral movement boom 3a is contracted, the parking brake is released to move to the next work point.

FIG. 14 is an example showing another work of the aerial work vehicle 1.

This is to inspect the inner wall of the railway tunnel T using the third work table 10.

[0039]

As described above, according to the present invention, the first work table is provided on the loading platform so as to be able to move up and down and turn, and the second work table is moved up and down and horizontally moved on the first work table. Since it is provided as possible, the worker can work safely and quickly on the second workbench securely positioned at the optimum work position. In addition, the ground is connected to the rail from the overhead line on the loading platform.
Pantograph and overhead wire measurement capable of measuring the position of the overhead wire
Since the apparatus is provided, it is preferable in terms of workability.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an aerial work vehicle according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a sectional view of a track running wheel.

FIG. 5 is a front view of the turning device.

FIG. 6 is an overall view of the work table.

FIG. 7 is a front view of the lower portion of the post.

FIG. 8 is a side view of the lower part of the post.

FIG. 9 is a side view of the upper part of the post.

FIG. 10 is a plan view of the upper part of the post.

FIG. 11 is a side view of the overhead wire support device.

FIG. 12 is a work state diagram of the aerial work vehicle.

FIG. 13 is a work state diagram of the aerial work vehicle.

FIG. 14 is a diagram showing different working states of the aerial work vehicle.

[Explanation of symbols]

 Reference Signs List 1 aerial work vehicle 2 track running wheel 3 outrigger 6 carrier 7 post 8 first work table 9 second work table 10 third work table 11 overhead wire support device 12 crane 14 overhead wire measurement device

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeaki Yamagata 2-4-2, Shibata, Kita-ku, Osaka-shi, Osaka Inside West Japan Railway Company (72) Inventor Satoshi Shibuya 2-chome, Shibata, Kita-ku, Osaka, Osaka 4-24 Inside West Japan Railway Company (72) Inventor Kiyotaka Tawara 2-4-2 Shibata Kita-ku, Osaka City, Osaka Prefecture Inside 72 West Japan Railway Company (72) Inventor Seiji Tachibana Kita-ku, Osaka City, Osaka 2-4-2, Shibata West Japan Railway Company (56) References Japanese Utility Model 6-8396 (JP, U) Japanese Utility Model 59-2800 (JP, U) Japanese Utility Model 4-5486 (JP, U) ) Japanese Utility Model 57-25900 (JP, U) Japanese Utility Model 61-113521 (JP, U) Japanese Utility Model Application Hei 4-72813 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66F 9/06

Claims (3)

(57) [Claims] 1. A truck-type aerial work vehicle capable of storing a track running wheel, wherein a second work table is moved up and down and horizontally moved on a first work table provided on a loading platform so as to be able to move up and down and turn. Is provided , and the overhead wire is temporarily held on the first work table.
When the overhead wire support device to be obtained is provided so that it can move vertically and horizontally
Both take ground from the overhead wire to the rail on the loading platform
Pantograph and overhead wire measuring device capable of measuring the position of the overhead wire
An aerial work vehicle, characterized in that it is provided with a stand. 2. A crane is provided on the carrier.
The aerial work vehicle described. 3. The aerial work vehicle according to claim 1, wherein a third work table is provided so as to be stored in the first work table.