JPH0620791Y2 - Aerial work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an aerial work vehicle used for erection work of electric wires installed between utility poles, for example.

(Prior Art) In the conventional general electric wire erection work between electric poles, first, a rope pulled out from a take-up winch mounted on a winch car is laid between electric poles, and after the electric wire is connected to the tip of this rope. The rope is wound up, the electric wire is laid between the electric poles, and then the electric wire is attached to the electric pole by riding on a work bucket of an aerial work vehicle.

However, such a conventional electric wire erection method requires two work vehicles, a winch vehicle equipped with a take-up winch and an aerial work vehicle having an aerial work bucket. As the cost increases, there is a problem that parking two working vehicles at a time on the road increases traffic obstacles.

By the way, among the publicly known ones, there is known one in which both of the above-mentioned works (winch work and work at high places) can be performed by a single work vehicle as shown in FIG.
No. 326). In the known work vehicle shown in FIG. 5, a horizontally swingable swivel base 102 is installed at a substantially intermediate position in the front-rear direction on a vehicle frame 112 behind a driver's seat 111 of a vehicle 101, and the swivel base 102 has a tip at the tip thereof. Work bucket 104
A boom winch 105 is attached to the vehicle frame 112 so that the base end of the boom 103 can be raised and lowered, and a take-up winch 105 is attached near the rear end of the vehicle frame 112. And work bucket 10
4 to perform high-place work and winch winch 105 to perform winch work. However, when the swivel base 102 is installed at the intermediate position in the longitudinal direction on the vehicle frame 112 and the winding winch 105 is positioned near the rear end portion of the vehicle frame 112, the swivel base is operated concurrently with the winch work. Even when the 102 is horizontally swung, the swivel does not interfere with the rope 152 pulled out from the winding winch 105, but as shown by the chain line 103 ', a storage space for storing the boom (from the swivel installation position) There is a problem that the length L) up to the vicinity of the front end of the vehicle cannot be made large, and the length of the boom 103 must be shortened.

(Purpose of Invention) The present invention has been made in view of the problems of the above-described conventional aerial work vehicle.
It is an object of the present invention to provide a new aerial work vehicle that can perform aerial work and winch work with a single work vehicle and further allows a large boom storage space.

(Means for Achieving the Purpose) The present invention is to install a swivel on a vehicle frame behind a driver's seat of a vehicle so that the swivel can be horizontally swiveled. In an aerial work vehicle in which a base end portion is mounted so as to be able to move up and down, the swivel base is installed at a substantially center position in the vehicle width direction near the rear end on the vehicle frame, and the driver seat and the swivel base are provided. The winding winch is installed at a position close to the end in the vehicle width direction on the vehicle frame between, and a rope guide part for guiding the rope pulled out from the winding winch is provided behind the swivel base in the vehicle frame. The rope stretched between the winding winch and the rope guide portion on the side is mounted at a position where it does not interfere with the swivel base when the swivel base turns. It

(Operation) The aerial work vehicle of the present invention has the following operations by the above means.

(1) Since the swivel with the boom attached and the take-up winch are provided on the vehicle frame, high work and winch work can be performed with a single work vehicle.

(2) Since the swivel is installed near the rear end of the vehicle frame and the take-up winch is installed on the vehicle frame between the driver's seat and the swivel, the take-up winch is provided. Even from the swivel installation position to the front of the vehicle,
That is, the boom storage space can be increased.

(3) The rope guide part for guiding the rope pulled out from the take-up winch has a rope stretched between the take-up winch on the rear side of the vehicle frame and the rope guide part. Is installed at a position where it does not interfere with the swivel base when turning, and pulls out the rope to the take-up winch without being influenced by the direction of the rope that is pulled out to the rear of the vehicle by the rope guide part,
Can be wound up.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 to 4 so that an aerial work vehicle of this embodiment can perform aerial work and winch work with one work vehicle. It is configured.

That is, the aerial work vehicle of the illustrated embodiment is the driver's seat 11 of the vehicle 1.
The swivel base 2 is installed on the rear vehicle frame 12 so as to be horizontally swivelable, and the base end of the boom 3 having a work bucket 4 attached to the tip thereof is mounted on the swivel base 2 so as to be capable of hoisting and moving. The swivel base 2, the boom 3 and the work bucket 4 enable work at a high place, and the winding winch (5A, 5B) is installed on the vehicle frame 12 to perform the winch work by the winding winch (5A, 5B). To be able to.

The swivel base 2 is installed on the vehicle frame 12 at a substantially central position in the vehicle width direction near the rear end 12a. Further, the swivel base 2 is designed so that the diameter E of the locus Q along which the end of the swivel base farthest from the swivel center P (FIG. 2) moves during horizontal swiveling is smaller than the vehicle width D of the vehicle 1. The vehicle frame 1 and each outer end of the locus Q in the vehicle width direction.
An appropriate interval F is provided between each of the two side ends 12b and 12c.

In this embodiment, the boom 3 is a telescopic boom in which a base boom 31, an intermediate boom 32, and a tip boom 33 can extend and contract with each other. The telescopic boom 3 is moved up and down by a hoisting cylinder 34.

The work bucket 4 is attached to the tip portion of the tip boom 33 in a state in which it can maintain a horizontal posture.

Two take-up winches are used in this embodiment, and each take-up winch 5A, 5B is located at each end (12a) in the vehicle width direction on the vehicle frame 12 between the driver's seat 11 and the swivel base 2. , 12b) Winding winch 5A, 5B in the near position
The ropes that are pulled out from the vehicle 1 are installed behind the vehicle 1 so that they can be pulled out slightly obliquely outward.

On the rear side of the swivel installation position on the vehicle frame 12,
Rope guide portions 7A, 7B equipped with four-side rollers for guiding the ropes 52A, 52B drawn out from the respective winding winches 5A, 5B are provided.

The rope guide portions 7A and 7B are provided on the vehicle frame 12
The two traverser devices 6A and 6B are provided so as to reciprocate in the vehicle width direction at the rear end 12a (rear side from the swivel installation position), and the traverser devices 6A and 6B are respectively attached. By individually reciprocating, the rope guide portions 7A and 7B can be reciprocating in the vehicle width direction. The traverser devices 6A and 6B are arranged to wind ropes 52A and 52B around the winch drum 51 in order by reciprocating the rope guide portions 7A and 7B in the vehicle width direction when the winding winch 5 is wound. It functions as a winding mechanism.

The two traverser devices 6A and 6B are provided at the left and right ends of a single outer casing 61 having a considerable length in the vehicle width direction at the rear end 12a of the vehicle frame 12. or,
Each of the traverser devices 6A and 6B has a slide member 62 that can slide in the vehicle width direction inside the outer casing 61, and an operating device (hydraulic cylinder) 63 that operates the slide member 62 to retract from the end of the outer casing 61. is doing. The rope guide portions 7A and 7B are fixed on the outer ends of the slide members 62 and 62, respectively.

The operating devices 63, 63 of the traverser devices 6A, 6B are
The operation range of each slide member 62 is set so as to extend and retract in the vehicle width direction within the range described below. That is, as shown in FIG. 2, the operating device 63 has a rope (52A or 72A) stretched between the rope guide portions (7A or 7B) on the same side as the drum 51 of each of the left and right take-up winches at the time of the maximum reduction. 52B) is located at a first position X in a state where it does not interfere with the swivel base 2 when the swivel base 2 swivels and is close to a locus Q drawn by the outer end of the swivel base 2 and at the time of its maximum extension. The rope (52A or 52B) is the first
The operating range is set so that the slide member 62 can be slid in the vehicle width direction so as to be located at the second position Y, which is spaced outward from the position X by about the same length as the inner width G of the winch drum 51. ing.

Further, the operating device 63 of each of the traverser devices 6A and 6B is configured to cause the slide member 62 to continuously reciprocate during winch winding, and further to synchronize the reciprocating speed with the rope winding speed. That is, when the rope (52A or 52B) is wound around the inner end of the winch drum 51, the operating device 63 is at its minimum contraction (the rope guide portion is in the position shown by the solid line), and the operating device 63 is moved from that state. When the rope is gradually extended and the rope is sequentially wound from the inner end of the winch drum 51 to the outer side, and the operating device 63 is fully extended (the rope guide portion is the chain line 7).
(In A'or 7B '), the rope is wound around the outer end of the winch drum 51, and after the rope is wound around the outer end of the winch drum 51, the operating device 63 is gradually reduced. Winch drum 51 rope
Of the operating device 6
The winding portion of the rope is set so as to reciprocate once over the entire width of the winch drum 51 each time 3 stretches once.

In this embodiment, two sets of the winding winch, the traverser device and the rope guide portion are used, but only one set may be used in other embodiments. Also, in many cases, the electric wires installed between electric poles are usually one set of three,
It is also possible to use a total of three sets of the winding winch, the traverser device and the rope guide portion. In that case, the take-up winch is connected to the vehicle frame 12 as indicated by the chain line 5C '.
It may be installed on one end side in the vehicle width direction above, and a traverser device and a rope guide part may be added respectively. Further, when a large-scale winding winch is to be installed, the winding winch is installed movably to the outer side in the vehicle width direction with respect to the vehicle frame 12, and is moved to the outer side in the vehicle width direction at the time of work to make the running state. Sometimes, it may be stored inside the vehicle width direction so that the winding winch does not protrude beyond the vehicle width. At this time, when the inner width G of the winding winch becomes wide,
Accordingly, the movement amount of the traverser devices 6A and 6B may be increased.

In the aerial work vehicle of this embodiment, the swivel base 2 is provided on the vehicle frame 12 near the rear end 12a, and the winding winches 5A and 5B are provided between the driver seat 11 and the swivel base 2. Therefore, even if the boom 3 is provided with a take-up winch, the length of the storage space for storing the boom 3 can be increased, and thus the boom 3 having a long length can be used. By using the boom 3 having a long length, the working height and working radius can be increased. In addition, the winding winch (5A, 5B) installation position and the rope guide (7A, 7B)
B) The installation position is separated by a considerable distance in the vehicle length direction, and the rope winding operation is performed at such a position far from the winding winch. Traverser device (6A, 6
Even if the drive timing of B) is slightly deviated, the rope is not wound irregularly, and the accuracy of synchronization between the winding timing of the winding winch and the drive timing of the traverser device does not become a problem. .

Further, in the above embodiment, two traverser devices 6A and 6B are used.
In synchronization with the rope winding speed of the take-up winch, the rope guide portion 7 together with the slide member 62 in the outer casing 61.
Although A and 7B are slid in the vehicle width direction, the rope guide portions 7A and 7B may be fixed and used in synchronism with each other without sliding. That is, the rope guide portions 7A and 7B may be used by simply moving them to the outer side in the vehicle width direction and fixed during work, and by moving them to the inner side in the vehicle width direction when the vehicle is running and storing them. Even in this case, the winding winch and the rope guide portion are separated from each other and the fleet angle can be obtained, so that the effect of preventing irregular winding can be obtained.

Further, even when the rope guide portions 7A and 7B are not moved to the outside in the vehicle width direction and are positioned in the stored state, the rope stretched between the winding winch and the rope guide portion is When the rope guide part is installed so as not to interfere with the swivel base 2 even when the swivel base 2 turns, the rope guide part may be used in the retracted state without moving in the vehicle width direction.

When performing electric wire erection work using this aerial work vehicle,
As shown in FIG. 4, the vehicle 1 is fixed by the outrigger 8 in a state where the rear portion of the vehicle 1 is close to the telephone pole to be worked, and the winch 5A is wound from the operation portion 13 provided in the position immediately behind the driver's seat 11. , 5B are operated. At that time, from the winding winch (5A or 5B) to the rope (52A or 52A).
Even if the swivel base 2 is swung while the B) is pulled out, the swivel base 2 does not come into contact with the rope, and the rope guide portions (7A, 7B) are located at the rear end 12a of the vehicle frame 12. Therefore, the rope guide portion (7
A, 7B) does not get in the way.

(Effect of the Invention) The aerial work vehicle of the present invention has the following effects.

(1) A swivel base 2 is provided near the rear end of the vehicle frame 12 behind the driver's seat 11, and the base end of a boom 3 having a work bucket 4 attached to the tip of the swivel base 2 is capable of undulating. Since the winding winch (5A, 5B) is installed on the vehicle frame 12 between the driver's seat 11 and the swivel 2 and closer to the end in the vehicle width direction, a single work vehicle can be used for high-altitude work. Even if the rope winding work can be performed, the distance from the swivel base installation position to the vicinity of the front of the vehicle, that is, the boom storage space for storing the boom 3 is large, and the boom 3 having a long length can be used. Ready to use
For example, the working height and working radius can be made larger than those of the aerial work vehicle with a winding winch shown in Japanese Utility Model Publication No. 58-326.

(2) Normally, this type of work vehicle is used with the rear side of the vehicle facing the utility pole to be constructed.
Since the rope guide portions (7A, 7B) for guiding the ropes (52A, 52B) pulled out from B) are provided on the rear side of the swivel base 2 in the vehicle frame 12, the winding winches (5A, 5B). ) Is provided between the driver's seat 11 and the swivel base 2, the rope (52
The installation position of the winding winch (5A, 5B) does not pose a problem when the electric wire is erected by A, 52B). That is, the rope stretched between the take-up winch and the rope guide portion does not interfere with the swivel base when the swivel base swivels, and is not affected by the direction of the rope pulled out to the rear of the vehicle by the rope guide part. With the take-up winch, you can pull out and wind the rope.

[Brief description of drawings]

FIG. 1 is a side view of an aerial work vehicle according to an embodiment of the present invention,
2 is a plan view of FIG. 1, FIG. 3 is a right side view of FIG. 1,
FIG. 4 is a view showing a usage state of the aerial work vehicle of FIG. 1, and FIG.
The figure shows a known aerial work vehicle. 1 ... vehicle 2 ... swivel base 3 ... boom 4 ... work bucket 5A, 5B ... winding winch 6A, 6B ... traverser device 7A, 7B ... rope guide section 11 ... driver's seat 12 ... vehicle Frame 52A, 52B ... rope

Claims (1)

[Scope of utility model registration request] 1. A swivel base (2) is installed on a vehicle frame (12) behind a driver's seat (11) of a vehicle (1) so as to be horizontally swivelable, and the swivel base (2) is provided at the tip thereof. A work platform for aerial work in which a base end of a boom (3) having a work bucket (4) is movably mounted so that the swivel base (2) is located near the rear end of the vehicle frame (12). The driver's seat (1
Vehicle frame (12) between 1) and the swivel base (2)
Winding winch (5
A, 5B) is installed, and the winding winch (5A, 5A,
5B), the rope guide portion (7A, 7B) for guiding the rope (52) pulled out from the vehicle frame (1
2) the winding winch (5A, 5B) on the rear side of the swivel base (2) and the rope guide portion (7).
A rope (52A, 52B) stretched between A and 7B is mounted at a position where it does not interfere with the swivel base (2) when the swivel base (2) swivels. Work vehicle.