JPH0530995Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Industrial application field This invention is a work vehicle in which a ladder is attached to the outriggers provided on the front left and right sides of the work vehicle for ascending and descending to the driver's cab of the work vehicle. This invention relates to an outrigger device.

(2) Conventional technology An aerial work vehicle, etc., which is equipped with a turntable that has a telescoping boom pivotally mounted on the vehicle body so as to be able to rotate freely, and which has a work platform balanced at the tip of the telescoping boom, does not move the telescoping boom during work. It has been well known that outriggers are provided on the front, rear, left and right sides of the vehicle body in order to prevent the vehicle from tipping over when turning, raising and contracting, and to horizontally support the vehicle body. During work, the outriggers were grounded to support the vehicle horizontally.

(3) Problems that the invention aims to solve However, when working on a slope, conventional work vehicles supported the vehicle horizontally by grounding the outriggers installed on the front, rear, right and left sides of the vehicle. When carrying out work, in order to prevent the vehicle from running out of control, the vehicle is positioned so that its front side faces downhill, and the outriggers are grounded to support the vehicle horizontally. The outriggers installed on the left and right sides can extend more than the outriggers installed on the left and right sides at the rear of the vehicle.
The driver's cab of a work vehicle is located high above the ground, and access to the driver's cab must be done from the rear of the vehicle's low vehicle body, or by installing a ladder into the cab. However, there were problems such as poor work efficiency, and if the ladder was not secured sufficiently, it would fall and cause an unexpected accident.

(4) Means for solving the problem In order to solve the above problem, the present invention has an inner post that is telescopically inserted into the outer post on the front left and right sides and the rear left and right side of the vehicle body. death,
In an outrigger device for a work vehicle equipped with an outrigger having a ground plate pivotally attached to the lower end of the inner post so as to be able to swing back and forth and left and right, a telescopic ladder is attached to the upper end of the outer post of the outrigger provided on the front left and right sides. One end of the ladder is fixed, and the other end of the ladder is connected to the upper surface of the ground plate through a holder that is pivotally connected to the top surface of the ground plate so as to be able to swing freely in the front and back directions, and a bracket that is pivotally connected to this holder so that it can be pivoted in the left and right direction. It is attached to the ground plate.

(5) Effect With the above configuration, when working on a slope, position the work vehicle so that the front of the work vehicle faces downhill, then extend the outriggers, adjust the front and rear outriggers, and adjust the outriggers. The ladder supports the car body horizontally, and the ladder extends as the outriggers installed on the front left and right sides of the car body extend.
Enables efficient and safe access to and from the operator's cab of a work vehicle. Additionally, even if the outrigger's ground plate swings left and right or front and back depending on the road surface condition, the swing of the ground plate is absorbed by the swing of the holder and bracket relative to the ground plate, preventing damage to the ladder. do.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

FIG. 2 shows an aerial work vehicle, in which outriggers 2 and 3 are provided on the front left and right sides of the vehicle body 1 and the rear left and right sides of the vehicle body 1 to support the vehicle body 1, and a turntable 4 is mounted on the vehicle body 1. The base end of a telescoping boom 5 is pivotally supported on the turntable 4, and the telescoping boom 5 is extended and contracted by a telescoping device (not shown), and both ends are pivotally supported on the turntable 4 and the telescoping boom 5. It is undulated by the expansion and contraction of the undulating cylinder 6, and a work platform 7 is placed at the tip of the telescopic boom 5.
is maintained in equilibrium. A ladder 8 is attached to the outer side of the outrigger 2 provided on the front left and right sides of the vehicle body 1.

As shown in FIG. 1, the outrigger 2 provided on the left and right sides of the front of the vehicle body 1 has an inner post 10 telescopically fitted into an outer post 9, and the inner post 10 has a built-in telescopic device (not shown). figure)
When operated, the outer post 9 expands and contracts downward, and a ground plate 11 is pivotally attached to the lower end of the inner post 10 so as to be swingable in the front-rear direction and the left-right direction. The outer post 9 has an upper ladder 12 of the ladder 8 with a lower ladder 13 telescopically attached to the upper ladder 12.
is fixed to the outer post 9, and a bracket 15 is attached to the lower end of the lower ladder 13 of the ladder 8, and this bracket 15 has a pin 17 attached to the upper surface of the ground plate 11.
A holder 1 is pivotably mounted to be swingable in the front and rear directions.
4 by a pin 18 so as to be swingable in the left-right direction, and the lower ladder 13 expands and contracts with respect to the upper ladder according to the amount of expansion and contraction of the inner post 10 with respect to the outer post 9.

With the above configuration, when working on a slope using the aerial work vehicle equipped with the outrigger device of the present invention, the vehicle body 1 is positioned so that the front of the work vehicle faces downhill. Outriggers 2 provided on the front left and right sides and the rear left and right sides of the
3, extend the front, rear, left and right outriggers 2 and 3.
The vehicle body 1 is supported horizontally by the outriggers 2 and 3. At this time, the outriggers 2 provided on the front left and right sides of the vehicle body 1 are extended longer by the slope of the slope than the outriggers 3 provided on the rear left and right sides of the vehicle body 1. As shown, the operator's cab 16 of the work vehicle is held at a position considerably higher than the ground A, but as the outriggers 2 provided on the left and right sides of the front of the vehicle body 1 extend, the lower ladder 13 of the ladder 8 moves upward. It extends with respect to the ladder 12 to allow workers to enter and exit the operator's cab 16 safely and efficiently.

In addition, even if the ground plate 11 swings in the front-rear direction and left-right direction due to unevenness or slope of the road surface, the ground plate 11
The swinging of the ground plate 11 is absorbed by the swinging of the holder 14 relative to the holder 14 and the swinging of the bracket 15 relative to the holder 14, thereby preventing damage to the lower ladder 13 and the upper ladder 12.

When running the aerial work vehicle after work is completed, the outriggers 2 and 3 provided on the front left and right sides and the rear left and right sides of the vehicle body 1 are contracted and retracted. The lower ladder 13 is reduced due to the reduction of the outriggers 2 provided on the left and right sides.
is stored within the upper ladder 12.

(7) Effects of the invention As described above, the present invention provides a work vehicle equipped with outriggers on the front left and right sides of the vehicle body and the rear left and right sides of the vehicle body. One end of the extendable ladder is fixed to the ground plate, and the other end of this ladder is attached to the ground plate so that it can swing freely in the front-back and left-right directions. To provide an outrigger device for a work vehicle, which allows a worker to enter and leave a driver's cab safely and efficiently, and prevents damage to a ladder by eliminating the influence of swinging of a ground plate of the outrigger.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a detailed view of the outrigger device, and FIG. 2 being a side view of the aerial work vehicle. 2... Outrigger, 8... Ladder, 9... Outer post, 10... Inner post, 11... Ground plate, 12... Upper ladder, 13... Lower ladder, 14
...Holding body, 15...Bracket.

Claims (1)

[Scope of utility model registration request] On the front left and right sides of the vehicle body and the rear left and right sides,
In an outrigger device for a work vehicle, the outrigger has an inner post telescopically inserted into the outer post, and a ground plate pivoted to the lower end of the inner post so as to be swingable back and forth and left and right. One end of a telescoping ladder is fixed to the upper end of the outer post of the outrigger equipped, and the other end of the ladder is attached to a holder which is pivotally connected to the upper surface of the ground plate so as to be swingable in the front and back direction, and to this holder in the left and right direction. An outrigger device for a work vehicle, characterized in that it is attached to a ground plate via a swingably pivoted bracket.