JPH09286593A - Digging pillar car - Google Patents

Abstract

(57) Abstract: First, a guard device for a wire of a crane device is stably attached as a whole, and secondly,
The maintenance is facilitated, and thirdly, a digging column vehicle is proposed in which these are easily and easily realized. SOLUTION: In this digging column vehicle, a boom A is mounted so as to be capable of turning, undulating, and expanding and contracting, a digging device B and a crane device C are attached, and a guard for accommodating and protecting the wire 14 of the crane device C. A device D is provided. The guard device D is arranged on the base boom 1 and has a front end and a rear end attached and fixed to the base boom 1, and a base guard 15, which is arranged on the intermediate boom 2 and whose base end is attached and fixed to the front end of the intermediate boom 2. The rear end of the intermediate boom 16 is slidably movable on the base boom 1, and the front end of the boom 3 is disposed. The tip guard 17 is slidably movable on the boom 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring column car. That is, for example, the present invention relates to a digging pole truck used to dig a hole and erect a utility pole.

[0002]

2. Description of the Related Art In this type of excavated column car, a boom is mounted on a chassis so that the boom can be swung, raised, and retracted. The boom has a base boom, an intermediate boom, and a tip boom that are telescopic. It is mounted so that it can be extended and stored. Further, the digging device and the crane device are attached to the digging work and the crane work, but the wire between the winch and the hook of the crane device is prevented from coming into contact with the electric wire, for example, during the crane work. So, on the boom,
Such a wire guard device is provided. By the way, such a guard device has conventionally been as follows.

First, as shown in Japanese Patent Publication No. 63-3829 and Japanese Patent Publication No. 64-11559, a base guard is arranged on the base boom, and its front and rear ends are fixed to the base boom. It is arranged on the intermediate boom and is extendable and retractable with respect to the base guard. The rear end is supported by the above-mentioned base guard and the front end is supported by the end guard described below. A guard device has been developed and used, which consists of a tip guard that is freely expandable and contractable with respect to the intermediate guard and whose tip is attached and fixed to the tip of the tip boom. In addition, Japanese Utility Model Publication No. 4-17659 and Japanese Utility Model Publication 4-1.
As disclosed in Japanese Patent No. 7660, etc., the base guard is arranged on the base boom, and the front and rear ends are attached and fixed to the base boom; and the base guard is arranged on the intermediate boom, and the front and rear ends are attached to the intermediate boom. A fixed intermediate guard and a tip guard that is arranged on the tip boom and is expandable and contractible with respect to the intermediate guard, the tip is attached and fixed to the tip of the tip boom, and the rear end is slidably supported by the intermediate guard described above. , And a guard device was developed and used that allows the intermediate guard and the tip guard to be stored inside the base boom.

[0004]

The following problems have been pointed out in such a conventional example. First,
The above-mentioned Japanese Patent Publication No. 63-3829 and Japanese Patent Publication No. 64-1
In the conventional example disclosed in Japanese Patent No. 1559, the rear end of the intermediate guard of the guard device is supported by the base guard, and the front end is supported by the front guard. In other words, the intermediate guard is only indirectly supported by the base boom and the tip boom via such a base guard and the tip guard, and has no direct fulcrum, and is directly supported by the intermediate boom. It does not mean that Therefore, the installation of the guard device was unstable as a whole, and there was a problem in terms of rigidity and strength. On the other hand, Japanese Utility Model Publication No. 4-17659 and Japanese Utility Model Publication No. 4-1766.
In the conventional example shown in Japanese Patent Publication No. 0, etc., the intermediate guard and the tip guard of the guard device are accommodated in the base boom in the accommodated state, and the intermediate guard is an intermediate member that is telescopically assembled to the base boom. The boom is fixed at the front and rear ends. Therefore, it has been pointed out that maintenance of the guard device is not easy, for example, when replacing the intermediate guard, the intermediate boom has to be temporarily removed from the base boom.

In view of such circumstances, the present invention has been made to solve the problems of the above-mentioned conventional example, and in the wire guard device of the crane device, the tips of the intermediate guard and the tip guard are respectively Since the rear end can be moved on the intermediate boom and the base boom while being fixedly mounted on the front end of the intermediate boom and the front boom, firstly, the guard device can be mounted in a stable manner as a whole. Secondly, it is an object of the invention to propose a digging column vehicle in which the maintenance of the guard device is also facilitated, and thirdly, and in which these are easily realized easily.

[0006]

The technical means of the present invention for solving such a problem is as follows. That is, this digging column vehicle comprises the following boom, digging device, crane device, guard device, and the like. That is, a base boom, an intermediate boom, and a tip boom are provided, and the intermediate boom and the tip boom are mounted so as to be capable of overhanging, retractable, and extendable and retractable on the chassis with respect to the base boom. A boom, a middle boom and a frame movably fitted to the tip boom, and a digging device for hanging and holding a drill on the frame, and a winch provided near the base boom, The crane comprises a hook arranged at the tip of the tip boom, a winch and a wire arranged between the hook, and a guard device as follows. That is, the base guard is arranged on the base boom, the front and rear ends of which are attached and fixed to the base boom, and the base guard is arranged on the intermediate boom, and the tip is attached and fixed to the tip of the intermediate boom. An intermediate guard, the rear end of which is movable while being guided on the base boom, is arranged on the front boom, the front end is attached and fixed to the front end portion of the front boom, and the rear end is attached to the middle boom or the base boom. And a guard device having a tip guard movable while being guided on the boom. The guard device functions to accommodate and protect the wire of the crane device, and the frame of the digging device is also movable with respect to the intermediate guard and the tip guard of the guard device. It is fitted to the outside.

In this digging tower vehicle, the boom is mounted on the chassis in such a manner that the boom can be swung, raised and retracted, and expanded and contracted, and the digging device and the crane device are attached to the boom. Used for crane work. A guard device is arranged on the boom in order to prevent an accident that the wire between the winch and the hook of the crane device comes into contact with an electric wire or the like during crane work. In this guard device, the front and rear ends of the base guard are attached and fixed to the base boom,
The tips of the intermediate guard and the tip guard are attached and fixed to the tips of the intermediate boom and the tip boom, respectively, and the rear ends of the intermediate guard and the tip guard are movable on the base boom and the intermediate boom, respectively.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments of the invention shown in the drawings. FIG. 1, FIG. 2,
3, FIG. 4, and FIG. 5 are provided for explaining the respective essential parts of the embodiment of the present invention. FIG. 1 is a front view of the tip boom, tip guard, and other overhanging states, and FIG. FIG. 3 is a front view of the base guard and other overhanging states, and FIG. 3 is a front view of the base boom, the base guard, and other storing states. or,
4 (1) is a plan view of the tip boom, tip guard, and other overhangs, and FIG. 4 (2) is a base boom,
It is a top view of a base guard and other overhanging states. FIG.
5 (1) is a vertical cross-sectional view of the intermediate boom, the intermediate guard, and other overhangs, and FIG. 5 (2) is a vertical cross-sectional view of the base boom, the base guard, and other storage states. FIG.
It is the whole digging column car perspective view.

First, a digging column vehicle will be generally described with reference to FIG. 6 and the like. The digging pole truck is used, for example, to dig a hole in the ground and erect a utility pole, and has the following boom A, digging device B, crane device C, guard device D, and the like.

First, the boom A comprises a base boom which is a base boom 1, an intermediate boom which is a mid boom, a tip boom 3 which is a fly boom, and the like, and the intermediate boom 2 and the tip boom 3 can be sequentially extended from the base boom 1. In addition, it is assembled so that it can be stored, and is mounted on the chassis 4 so as to be capable of turning, undulating, and expanding and contracting. That is, a turntable 5, which is a turntable, is mounted on the chassis 4 so as to be capable of turning in the forward and reverse directions, and a pair of support frames 6 are erected on the turntable 5. Between the upper ends of the support frames 6, the base end of the base boom 1 of the boom A is pivotally attached by a horizontal shaft 7, and
Between the lower center of the base boom 1 and the center of the support frame 6,
A hoisting cylinder 9 is interposed via a pin 8. Boom A is base boom 1, intermediate boom 2, tip boom 3
The base boom 1 consists of a telescopic mechanism (not shown) such as a cylinder or a wire, which is a telescopic multi-stage type that is telescopic.
On the other hand, the intermediate boom 2 and the tip boom 3 are assembled so that they can be sequentially projected and can be inserted and stored.
It can be turned, raised, and retracted on the chassis 4.

Next, the digging device B includes a frame 10 movably fitted to the intermediate boom 2 and the tip boom 3, and a drill 11 is hung and held on the frame 10. That is, the digging device B is movable between the tip portion of the base boom 1 and the tip portion of the tip boom 3 via the tip boom 3 and the intermediate boom 2, and as shown in FIG. 1 and FIG. It is used for digging work when it is locked and positioned at the tip of the tip boom 3, whereas when it is not used for digging work and it is not used, as shown in FIG. 2 and FIG. It is locked and positioned at the tip of the. Then, the drill 11 is hung down under such a frame 10 so as to be able to move up and down, and is rotationally driven by a hydraulic motor.
It is driven to rotate during digging work and is used to form holes in the ground.

Next, in the crane device C, a winch 12 provided near the base boom 1 of the boom A, a hook 13 arranged at the tip of the tip boom 3, a winch 12 and the hook 13 are provided.
It is provided with the wires 14 and the like arranged between them. That is, in the illustrated example, the winch 12 is mounted and fixed on the base end portion of the base boom 1, and the hook 13 is hung down from below the tip end portion of the tip boom 3 so as to be able to move up and down. On the wire rope or wire 1
4 are arranged. The wire 14 is located on the boom A, and when the boom A is extended, it is located on the base boom 1, the intermediate boom 2, and the tip boom 3 while adjusting their height levels. An object such as a utility pole is hooked on the hook 13, and the winch 12 is driven to wind or unwind the wire 14 so that the object can be moved up and down. In addition, E in FIG. 6 is an outrigger attached to the chassis 4. Digging pillar car,
This is generally the case.

The guard device D will be described below with reference to FIG. 1, FIG. 2, FIG. 3, FIG. The guard device D functions to store and protect the wire 14 of the crane device C described above, and is provided with a base guard 15 as a next base guard, an intermediate guard 16 as a mid guard, a tip guard 17 as a fly guard, and the like. Become. That is, the base guard 15 is arranged on the base boom 1 and has its front and rear ends attached and fixed to the base boom 1, and the base guard 15 is arranged on the intermediate boom 2 and its front end is attached and fixed to the front end of the intermediate boom 2. , The rear end is arranged on the tip boom 3 and the intermediate guard 16 which is slidable while being guided on the base boom 1.
The front end is attached and fixed to the front end of the front boom 3, and the rear end is provided with a front guard 17 which is slidably movable while being guided on the intermediate boom 2 and the base boom 1. The frame 10 of the digging device B described above is movably fitted on the intermediate guard 16 and the tip guard 17 of the guard device D.

The guard device D will be described in more detail. First, the base guard 15 of the guard device D has a substantially ladder shape arranged along the longitudinal direction on the base boom 1, and the front end and the rear end are respectively held by the holder 18, and the front end portion of the base boom 1 and It is mounted and fixed on the central part. In the illustrated example, the rear end is attached and fixed to the winch 12 of the digging device B via the holder 18.

Next, the intermediate guard 16 is arranged along the longitudinal direction on the intermediate boom 2, has a substantially ladder shape narrower in width and shorter than the base guard 15, and has a tip at the tip of the intermediate boom 2. It is attached and fixed via a holder 18 which is a fulcrum. Therefore, when the intermediate boom 2 is inserted and housed in the base boom 1 as shown in FIG. 3 and FIG. It is possible to slide while being moved, in the illustrated example,
A storage cylinder 19 fixed on the base boom 1 along the longitudinal direction.
It can be inserted and stored in a nested manner while sliding in it.

The tip guard 17 is arranged along the longitudinal direction on the tip boom 3 and has a substantially ladder shape which is narrower and shorter than the intermediate guard 16 and has a tip at the tip of the tip boom 3. It is attached and fixed via a holder 18 which is a fulcrum. Therefore, as shown in (2) of FIG. 3 and FIG. 5, when the tip boom 3 is fitted and housed in the intermediate boom 2, the rear end of the tip guard 17 is placed on the intermediate boom 2. While being telescopically inserted and stored in the intermediate guard 16, the intermediate boom 2 is guided and slid on the intermediate boom 2. Further, when such an intermediate boom 2 is fitted and housed in the base boom 1, the tip guard 17 remains fitted and housed in the intermediate guard 16 on the intermediate boom 2, and the intermediate guard 16 is inserted.
At the same time, it is slid on the base boom 1 via the intermediate boom 2, and is thus inserted and stored in the storage cylinder 19.

Now, the wire 14 from the winch 12 of the crane device C is always accommodated and protected in such a base guard 15. And the wire 14 is
As shown in (2) of FIG. 3 and FIG. 5, when the intermediate boom 2 and the tip boom 3 are inserted and housed in the base boom 1, the sheave 20 at the tip of the tip boom 3 is used as it is. , It reaches the hanging hook 13. In contrast,
When the intermediate boom 2 and the tip boom 3 are extended from the base boom 1 as shown in FIGS. After being stored and protected in the intermediate guard 16 and the tip guard 17, the hook 13 hangs down via the sheave 20 at the tip of the tip boom 3.

The present invention is constructed as described above. Then it becomes as follows. In this digging tower vehicle, the boom A is mounted on the chassis 4 in such a manner that the boom A can be swung, raised, and retracted, and the boom A is equipped with the digging device B and the crane device C. It is then used for crane work, and is used, for example, to erect electric poles.

A guard device D is arranged on the boom A in order to prevent the wire 14 between the winch 12 and the hook 13 of the crane device C from coming into contact with an electric wire or the like during crane work. In the guard device D, the front end and the rear end of the base guard 15 are attached and fixed to the base boom 1, and the ends of the intermediate guard 16 and the tip guard 17 are attached and fixed to the tip ends of the intermediate boom 2 and the tip boom 3, respectively. The rear ends of the intermediate guard 16 and the tip guard 17 are slidable on the base boom 1 and the intermediate boom 2, respectively. By the way, there are the following 1st, 2nd and 3rd in this digging column car.

First, the guard device D for the digging column car.
It goes without saying that both the front and rear ends of the base guard 15 are fixedly mounted on the base boom 1 as well as the intermediate guard 1 thereof.
6 and the tip of the tip guard 17 are attached and fixed to the tip portions of the intermediate boom 2 and the tip boom 3, respectively, and the rear ends of the intermediate guard 16 and the tip guard 17 are respectively on the base boom 1 and the intermediate boom. The upper part of the table 2 is slid while being guided. As described above, the base guard 15, the intermediate guard 16, and the tip guard 17 of the guard device D are all stably attached and fixed, so that the guard device D is stably attached as a whole.

Secondly, the guard device D for this digging column car
The rear ends of the intermediate guard 16 and the tip guard 17 are slidable on the base boom 1 and the intermediate boom 2, respectively.
6 and the tip guard 17 are also always located on the boom A. Therefore, for example, when replacing the intermediate guard 16,
The maintenance of the base guard 15, the intermediate guard 16, and the tip guard 17 of the guard device D can be easily performed from the outside of the boom A, such as can be performed from the outside as it is.

Thirdly, these first and second points are
The intermediate guard 16 and the tip guard 17 of the guard device D are easily realized by a simple configuration in which the tip is attached and fixed to the boom A and the rear end is slidable with respect to the boom A.

[0023]

As described above, the digging column vehicle according to the present invention, in the wire guard device of the crane device, has the tip of the intermediate guard and the tip guard respectively of the tip portion of the intermediate boom and the tip boom. The following effects are achieved by mounting and fixing it on the upper part and moving the rear end on the base boom and the intermediate boom.

First, the guard device can be attached stably in its entirety. In other words, in the guard device of this digging column vehicle, the tips of the intermediate guard and the tip guard are mounted and fixed directly on the tip portions of the intermediate boom and the tip boom, respectively, and directly supported thereby. That is, unlike the above-described conventional example of this kind, the intermediate guard is not supported by the base guard or the tip guard but indirectly supported by the base boom or the tip boom. The rear ends of the intermediate guard and the tip guard are moved while being guided on the base boom and further on the intermediate boom. As described above, not only the base guard but also the guard device is stably attached as a whole, and is excellent in rigidity and strength.

Secondly, maintenance of the guard device is also facilitated. That is, in the guard device of this digging column vehicle, the rear ends of the intermediate guard and the tip guard are movable on the base boom and the intermediate boom, respectively.
That is, unlike the above-described conventional example of this kind, the intermediate guard and the tip guard are housed in the base boom, and the intermediate guard is not attached and fixed to the intermediate boom both at the front and rear ends. That middle guard and tip guard are always located on the boom. Therefore, for example, when exchanging the intermediate guard, it is not necessary to pull out the intermediate boom from the base boom, and it is possible to perform it from the outside as it is. Therefore, maintenance of the guard device is facilitated as a whole.

Third, they are easily and easily realized. That is, the above-described first and second points are easily realized by the simple structure in which the tip is attached and fixed to the boom and the trailing end is movable for the intermediate guard and the tip guard of the guard device. It As described above, the effects exhibited by the present invention are remarkable and large, for example, all the problems existing in this type of conventional example are solved.

[Brief description of drawings]

FIG. 1 is a front view of a tip boom, a tip guard, and other essential parts of an overhanging state of a digging column truck according to the present invention, which is used for explaining an embodiment of the invention.

FIG. 2 is a view for explaining an embodiment of the present invention, in which a base boom,
It is a front view of a main part of a base guard and other overhanging states.

FIG. 3 is used to explain an embodiment of the present invention, in which a base boom,
It is a front view of a main part of a base guard and other accommodation states.

FIG. 4 is a view for explaining the embodiment of the present invention. (1) is a plan view of a tip boom, tip guard, and other essential parts in an overhang state, and (2) is a base boom and a base. FIG. 6 is a plan view of a main part of a guard and other parts in an extended state.

FIG. 5 is a view for explaining the embodiment of the present invention. (1) is a vertical sectional view of an intermediate boom, an intermediate guard, and other essential parts in an overhang state, and (2) is a base boom and a base guard. FIG. 5 is a vertical cross-sectional view of a main part in other stored states.

FIG. 6 is an overall perspective view of a digging column truck.

[Explanation of symbols]

 1 base boom 2 middle boom 3 tip boom 4 chassis 5 swivel 6 support frame 7 axes 8 pins 9 hoisting cylinder 10 frame 11 drill 12 winch 13 hook 14 wire 15 base guard 16 middle guard 17 tip guard 18 holder 19 storage cylinder 20 sheave A boom B digging device C crane device D guard device E outrigger

Claims (1)

[Claims] 1. A base boom, an intermediate boom, and a tip boom are provided, and the intermediate boom and the tip boom can be successively extended with respect to the base boom and are assembled so as to be stowable.
A digging device having a boom mounted on a chassis so as to be capable of turning, undulating, and expanding and contracting, and a frame movably fitted to the intermediate boom and the tip boom, and having a drill hung and held on the frame. A crane provided with a winch provided near the base boom, a hook arranged at the tip of the tip boom, a wire arranged between the winch and the hook, and a crane device arranged on the base boom. A base guard whose front and rear ends are attached and fixed to the base boom and the intermediate boom, the front end being attached and fixed to the front end of the intermediate boom, and the rear end being guided on the base boom. And a movable intermediate guard, which is arranged on the tip boom and has a tip fixed to the tip of the tip boom and a tip which is movable while the rear end is guided on the intermediate boom and the base boom. When, And a guard device provided with the guard device, the guard device functioning to receive and protect the wire of the crane device, and the frame of the digging device includes the intermediate guard of the guard device. A digging column vehicle characterized in that it is also movably fitted to the tip guard.