JPH0940381A - Bucket for vehicle for high lift work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bucket for vehicle for high lift work of a light weight, to which workers can get on and off easily. SOLUTION: Around a working bench 2, a safety fence 3 which is composed of pillars 3a, 3a..., 3b and 3c, and a crosspiece 3d is provided, a handrail 4 with no cutting is connected integrally to the safety fence 3 at its upper edge, while an opening part 5 for entry and exit is provided at an adequate surface, and a single swing type door 6 operating to open and close only to the inner side is provided to the opening part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket for an aerial work vehicle, and more particularly to a bucket that is lightweight and easy to get on and off, and yet has sufficient rigidity.

[0002]

2. Description of the Related Art An aerial work vehicle has, for example, a structure in which a bucket is attached to the tip of a retractable undulating arm projecting obliquely upward from a swivel provided on a trolley. You can safely get on board and repair buildings, bridges, painting, or erection of electric wires. The bucket is surrounded by safety fences such as wire nets and lattices in consideration of worker's safety. The entrance / exit structure of the bucket is necessary for the passage of the worker as illustrated in FIG. An entrance / exit 12 is formed by opening the safety fence 3 from the top to the bottom only in a portion corresponding to the width, and a door 13 is provided at the entrance / exit 12, or as shown in FIG. The handrail 14 is provided on the upper edge of the, and the doorway 12 is secured between the handrail 14 and the workbench 2,
It is known that the doorway 12 is provided with a slide bar 15 which horizontally traverses the doorway 12 and is vertically movable.

[0003]

The type in which the doorway is opened from the top to the bottom is easy to get on and off because it can pass through the doorway while standing, but steel is often used for the safety fence to increase the rigidity of the doorway part. As a result, the weight is increased, and the load on the tip of the arm becomes heavy, resulting in poor operability. On the other hand, the slide bar type is lightweight and has high rigidity, but on the other hand, every time you get on and off, you have to lift the slide bar by hand, and you have to go through it while supporting it so that it does not fall down. There are advantages and disadvantages.

[0004]

DISCLOSURE OF THE INVENTION The present invention is a bucket for high-altitude work, which pursues the easiness of getting on and off the vehicle by a rational structure, and at the same time secures rigidity and reduces weight. The structure has a safety fence around it, and an unbroken handrail is provided around the upper edge of the safety fence, and an opening / closing opening is provided on an appropriate surface of the safety fence, and the opening / closing operation is performed at the opening. There is a door to open. And for the door,
A single-open type that can be opened only on the inside and a latch provided on the side opposite to the hinge to engage with the side frame of the opening can be preferably used.

[0005]

[Operation] If you open the door, you can go in and out under the handrail, so you do not feel bothered even if both hands are blocked. Also, if a single-opening door that opens only inward is adopted, it will not open from the inside of the bucket until you pull the door inside and pull the door inward, so it will not open suddenly during work and it is safe. If you install a shackle, the safety will be improved. Also, any conventional type can be dealt with by simple modification.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bucket for aerial work vehicles according to the present invention will be described with reference to the drawings. FIG. 1 shows the entire bucket 1. A safety fence 3 is provided around a workbench 2, and a strong and continuous handrail 4 is provided around the upper edge of the safety fence 3. On one side of the safety fence 3, an opening / closing opening 5 having a width that allows an operator to pass therethrough with a margin.
Is provided. The opening 5 is provided with a single-opening type door 6.

The safety fence 3 has at least four corners of the workbench 2 and columns 3a, 3a ... 3b on both sides of the opening 5.
3c standing upright, and those columns 3a, 3 excluding the opening 5
.. and 3b or 3c, a crosspiece 3d is horizontally installed, and the upper ends of the columns 3a, 3a ... 3b, 3c are connected by the handrail 4 to form a lattice structure. Also the door 6
Is a single-opening type in which a metal rod is bent in a U-shape, and an end portion is horizontally rotatably attached to one of the columns 3b, which is a side frame of the open portion 5, and the hinge is rotatably attached. The contact plate 6a is fixed to the side opposite to the part, and the contact plate 6a abuts on the inside of the other column 3c which is the side frame of the open part 5,
The structure is such that it can be opened and closed only inside.
Further, the door 6 is provided with a latch 7 that is locked to the other column 3c, which is the side frame of the opening, and can be removed by gripping the knob 7a of the latch 7 and rotating it upward. . Although not shown, it is preferable that the hinge portion of the door 6 has a built-in spring for imparting a turning force to the door 6 in the closing direction, and the latch 7 is equipped with an automatic lock mechanism.

An operation panel 8 is provided on the other side surface of the safety fence 3 provided around the bucket 1, so that an instruction operation such as turning, ascending and descending can be performed from within the bucket 1.

The bucket 1 formed in this way is attached to the tip of a retractable undulating arm 11 projecting obliquely upward from a swivel base 10 provided on a self-propelled carriage 9, as illustrated in FIG. 2, for example. Then, the up-and-down arm 11 is placed in a substantially horizontal position and lowered until the workbench 2 is slid over the ground, the latch 7 is removed, the door 6 is pushed inward and opened, and the handrail 4
You can dive under the car. After getting in the vehicle, the latch 7 is applied (it is not necessary if there is an automatic lock function), the switch of the operation panel 8 is operated to move the bucket 1 to a desired height and position, and work is performed. When you are finished, you can get off in the reverse order of getting in.

The bucket itself has a high rigidity due to the uninterrupted handrails provided around the upper edge of the safety fence,
It does not require a reinforcing material and can be made lightweight. In addition, when you get on and off, you only have to push or pull the door, so there is less hassle and safety is high.

Although the door of the embodiment is a single-opening type in which a metal rod is bent, a door material and structure such as a mesh frame or plate body or a sliding door type that slides left and right is adopted. Can be changed appropriately, and the form of the safety fence and the structure of the vehicle are not limited to the exemplified models. Moreover, even if the handrail itself is not formed in a continuous and seamless manner, the upper ends of the columns are individually connected by the handrail, and the handrails are connected to each other. , As a result, the structure without the break is acceptable.

[0012]

According to the present invention, it is possible to provide a bucket for an aerial work vehicle that is lightweight and has high rigidity, is easy to get on and off, and is excellent in safety. In addition, existing buckets can be easily modified.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of a bucket according to the present invention.

FIG. 2 is an explanatory diagram illustrating an overview of the entire aerial work vehicle.

FIG. 3 is an explanatory diagram of a conventional example.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 ... Bucket, 2 ... Work table, 3 ... Safety fence, 3a,
3b, 3c ·· Posts 3d · · Crosspieces · 4 · · Handrails 5 · ·
Opening part, 6 ... Door, 6a ... Patch plate, 7 ... Latch, 7
a ... Knob, 8 ... Operation panel, 9 ... Self-propelled trolley, 1
0 ... Revolving base, 11 ... Elevating arm, 12 ... Doorway,
13 ... Door, 14 ... handrail, 15 ... slide bar

Claims (2)

[Claims] 1. A safety fence is provided in the periphery, an unbroken handrail is provided around the upper edge of the safety fence, and an opening / closing portion is provided on an appropriate surface of the safety fence, and an opening / closing portion is provided at the opening portion. Bucket for aerial work vehicles equipped with an operating door. 2. The aerial work vehicle according to claim 1, wherein the door is a single-opening type door that can be opened only inside, and has a latch that is locked to a side frame of the opening portion on the side opposite to the hinge portion. Bucket.