JP3066977U - Outrigger device for work vehicle - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an outrigger device for a work vehicle that increases the stability of a side where many work objects are located in a lifting work or the like on the left and right sides of a vehicle body. SOLUTION: Outrigger devices (14 to 17) provided in pairs on the left and front sides of the vehicle body and in pairs on the right and left sides of the vehicle body.
In the pair of outriggers on the left side of the vehicle body 11 or the pair of outriggers on the right side of the vehicle body 11, the pair of outriggers on the side where many work objects are located in the lifting work or the like is positioned outside the other outrigger in the front-rear direction of the vehicle body. To be placed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an outrigger device for a work vehicle, such as a crane truck or an aerial work vehicle, provided on the vehicle body to secure the stability of the vehicle body.

[0002]

[Prior art]

 The body of work vehicles such as crane trucks and aerial work vehicles equipped with a boom that can be raised and lowered and swiveled on the vehicle body is provided with wheels on the front and rear of the vehicle body to move, and at the time of work An outrigger device is provided to support the vehicle body by extending downward and contacting a lower end portion thereof to prevent falling of the vehicle body. By supporting the vehicle body with this outrigger device, the stability of the vehicle body is increased, and the boom can be safely operated to carry out lifting and lifting work of heavy objects.

[0003] The outriggers are usually provided at a total of four locations, one pair on the left and right sides of the vehicle body and one pair on the right and left sides of the vehicle body. The outriggers can be extended outward in the left and right direction of the vehicle body to increase stability. It is constituted by a jack which is arranged at the tip and can be extended downward. The stability of the vehicle body can be increased by extending the outrigger in the left-right direction of the vehicle body so that the grounding position of the grounding portion at the lower end of the jack is located further outside the vehicle body.

[0004]

[Problems to be solved by the invention]

 By the way, such an outrigger device capable of projecting in the left-right direction of the vehicle body can secure a large amount of overhang to the vehicle body by increasing the length of the outrigger to substantially the size of the left and right sides of the vehicle body in order to increase the stability of the vehicle body. ing. Therefore, as shown in FIG. 1, it is common to arrange the left rear outrigger 5 behind the right front outrigger 2 of the vehicle body 1.

[0005] In Japan, because the left-hand traffic is usually the target of lifting work or the like, which is often located on the left side of the vehicle body, it is necessary to increase the stability of the left side of the vehicle body and extend the work range of lifting work or the like. However, if the outriggers are arranged as described above, the jack 7 attached to the tip of the outrigger 3 on the left front side is located behind the jack 6 attached to the tip of the outrigger 2 on the right front side. Turning the boom 8 rotatably provided on the vehicle body to the left front has lower stability than turning the vehicle to the right front side, and there is a problem that the working range on the left front side of the vehicle body is narrowed.

The present invention has been made in view of such a problem, and has an outrigger device for a work vehicle that increases stability on a side where many work objects are located with respect to a vehicle body and expands a work range. It is intended to provide.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a pair of outriggers are provided at the front and rear of the left side of the vehicle body and extendable to the left side of the vehicle body, respectively. An outrigger device for a working vehicle, comprising: an outrigger that can extend to the right side of the vehicle; and a jack that is provided at the distal end of the outrigger so as to be extendable below and supports the vehicle body by extending. A pair of outriggers on the left side of the vehicle body or a pair of outriggers on the right side of the vehicle body are arranged outside the other pair of outriggers in the front-rear direction of the vehicle body. Particularly when a lot of lifting work is performed on the left side of the vehicle body as in Japan, the outrigger on the left front side of the vehicle body is arranged forward of the outrigger on the right front side of the vehicle body, and It is preferable that the outrigger on the left rear side of the vehicle is disposed behind the outrigger on the right rear side of the vehicle body behind the vehicle body.

In a work vehicle employing such an outrigger device, the distance between a pair of outriggers before and after the side where a large number of work objects are located with respect to the vehicle body can be widened, so that there are many work objects with respect to the vehicle body. The working range of the obliquely forward and obliquely rear side can be expanded as compared with the other.

In particular, when the vehicle is traveling on the left side, as in Japan, and the vehicle is stopped on the left side of the road during work, and a lot of lifting work or height work is performed on the left side of the body, the work area on the left side of the body is If it is wide, it will be easy to use.

[0010]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows a crane vehicle equipped with the outrigger device according to the present invention. The crane vehicle 10 is configured with a truck as a base vehicle body. A vehicle body 11 is provided with a swivel base 12, and the swivel base 12 is provided with a boom 13 that can be raised and lowered. A wire (not shown) is hung from the tip of the boom 13, and the wire is wound up by a winch (not shown) provided on the upper surface of the base end of the boom 13 or the swivel 12, and is fed out. It is possible to hang the load at the tip of 13.

On the other hand, in order to secure the stability of the vehicle body when performing the above-mentioned hanging load operation, a pair of outrigger devices (14) are provided in a pair on the left and right sides of the vehicle body 11 and a pair on the right and left sides of the vehicle body 11. To 17) are provided. These outrigger devices are composed of an outrigger and a jack. For example, the left front outrigger device 14 includes a left front outrigger 20 and a left front jack 19, and the outrigger 20 is fitted in the outrigger box 21 and the outrigger box 21 so as to extend and contract toward the outside of the vehicle body. The outrigger beam is configured to extend and contract with respect to the outrigger box by the expansion and contraction operation of a built-in hydraulic cylinder (not shown). On the other hand, the jack 19 is provided at the tip of the outrigger beam 22, has a box-like structure like the outrigger, and can be extended downward by a built-in hydraulic cylinder, so that the lower end surface of the jack 19 can be grounded to the ground. I have. The same effect can be obtained even if this jack 19 is constituted only by a hydraulic cylinder.

In the crane truck having the above-described configuration, when carrying out a suspended load operation or the like, the outrigger of each outrigger device is moved left and right outward from the vehicle body 11 so that the lower ends of the jacks abut on the road surface. The working range of the boom 13 can be expanded by increasing the stability of the boom 13.

Further, as for the arrangement of these outrigger devices (14 to 17), a left front outrigger device 14 is provided immediately behind the traveling cab 18, on the left front of the vehicle body 11, and behind the right front outrigger device 15. Is provided. A right rear outrigger device 16 is provided on the right rear side of the vehicle body 11, and a left rear outrigger device 17 is further provided behind the right rear outrigger device 17.

As a result, the distance between the left front outrigger device 14 and the left rear outrigger device 17 disposed on the left side of the vehicle body 11 in the vehicle front-rear direction is increased, so that the stability of the vehicle body in the left direction can be increased. Becomes Particularly, the stability when the boom 13 is turned to the front left and rear left of the vehicle body 11 is increased, so that the working range of the front left and rear left of the vehicle body 11 can be further expanded.

As described above, the distance between the left outrigger devices on the left side of the vehicle body 11 is increased. Conversely, the left front outrigger device is provided behind the right front outrigger device, and the right rear outrigger device is provided behind the right rear outrigger device. An outrigger device may be provided. As a result, the interval between the outrigger devices on the right side of the vehicle body is increased, and the stability on the right side of the vehicle body can be increased. This is effective when a large number of work objects such as lifting work are normally located on the right side of the vehicle body.

In the above embodiment, a crane car has been described. However, the present invention is also applicable to, for example, an outrigger device for a work vehicle having a boom in a vehicle body such as a work vehicle at a high place.

[0017]

[Effect of the invention]

 As described above, the outrigger device of the present invention makes it possible to increase the stability of the left and right sides of the vehicle body on the side where many work objects are located in lifting work, aerial work vehicles, etc. , Crane trucks or aerial work vehicles, etc., the work range on the side where many work objects are located in lifting work, aerial work, etc. is widened, and a work vehicle with improved usability can be obtained Becomes

[0018]

[Brief description of the drawings]

FIG. 1 is a plan view of a crane truck having an outrigger device in a conventional form.

FIG. 2 is a plan view of a crane vehicle having an outrigger device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Crane truck 1, 11 Body 2 Right front outrigger 3, 20 Left front outrigger 4 Right rear outrigger 5 Left rear outrigger 6 Right rear jack 7, 19 Left front jack 8, 13 Boom 14 Left front Side outrigger device 15 Right front outrigger device 16 Left rear outrigger device 17 Right rear outrigger device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor: Manabu Oshima 1015-2, Yamashita, Ryoke, Ryouji, Ageo City, Saitama Prefecture Inside Aichi Corporation Ageo Works

Claims (2)

[Utility model registration claims] A pair of outriggers provided on the left and right sides of the vehicle body and extendable to the left side of the vehicle body; a pair of outriggers provided on the right and left sides of the vehicle body and extendable to the right side of the vehicle body; An outrigger device for a working vehicle, comprising: a jack provided at each of the distal ends of these outriggers, the jack being configured to extend downward and support the vehicle body by extending the pair of outriggers on the left side of the vehicle body. An outrigger device for a work vehicle, wherein a pair of the outriggers on the right side of the vehicle body are disposed outside a pair of the outriggers in the front-rear direction of the vehicle body. 2. The vehicle according to claim 1, wherein the outrigger on the left front side of the vehicle body is disposed forward of the vehicle body with respect to the outrigger on the right front side of the vehicle body, and the outrigger on the left rear side of the vehicle body is disposed on the right rear side of the vehicle body. The outrigger device for a work vehicle according to claim 1, wherein the outrigger is disposed behind the outboard body.