JPH0628555Y2 - Safety equipment for aerial work vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial field of application The present invention relates to a safety device for an aerial work vehicle that detects an overload of a gondola of the aerial work vehicle.

2. Description of the Related Art Conventionally, an aerial work vehicle that carries out work at high places such as construction work and electrical work, and lifts and carries personnel and equipment, installs a boom that moves up and down on the bed of a truck, and attaches the tip of the boom. Although the gondola is attached to the car and the boom can be swung up and down to move up and down to a high place, such a work platform (gondola) is not equipped with a load weight detection device, so personnel and equipment can be used. It was very dangerous when loading a large number of.

The present invention detects the load weight of the personnel and equipment in the gondola, warns of overload and improves safety, and also prevents the bottom plate on which the personnel and equipment are directly placed from shifting. At the same time, it is intended to provide a safety device for an aerial work vehicle that can accurately detect the load.

[Constitution of device]

Means for Solving the Problems The present invention is based on the prior art, and in view of the problem that the gondola of an aerial work vehicle is not equipped with a load weight detection device, the bottom of the gondola, personnel, and equipment are directly mounted. By installing a load detection device between the bottom plates, it is possible to detect the load weight and improve safety, and the size of the bottom plate is limited due to the internal structure of the gondola and the workability of mounting the bottom plate. For the possibility that the device and the bottom plate may be misaligned and accurate detection may not be possible, install washers of a certain height on both sides of the load detection device, fix a thin plate plate horizontally between the washers, and place the plate vertically above and below the plate. By fixing the mounting plate to the position and the mounting plate that contacts the load detection device, and fixing the bottom plate on the mounting plate, the plate bends vertically because the plate is a thin plate, and the load applied to the bottom plate is detected. It is accurately transmitted to the device, and because the plate is a flat plate and has an area, the plate is strong on the front, rear, left, and right horizontal planes, so that the bottom plate is prevented from shifting and moving laterally, and the load is accurately detected. It does not eliminate the drawbacks.

Function The present invention detects the weight of the personnel and equipment on the bottom plate in the gondola by the load detection devices provided at the four corners of the bottom of the gondola, and warns when the total weight exceeds the set weight. The plate between the bottom plate and the load detecting device flexes to accurately transfer the weight of the bottom plate to the load detecting device, and the plate does not move in the plane direction, and the plate and the bottom plate are fixed, After all, the bottom plate does not shift or move laterally.

Embodiment An embodiment of the present invention will now be described with reference to the drawings. 1, 1a ... 4 of a gondola 2 that moves up and down in an aerial work vehicle.
It is a detection unit arranged in a corner, and an L-shaped channel-shaped lower plate 4 is fixed on the bottom portion 3 of the gondola 2, and the detection head 6 is placed on the lower plate 4 via a detection device mounting plate 5. The load detection device 7 (load cell) is fixed so that
Washers 8 and 8a having a predetermined height are attached on both sides of the washer in the vertical direction.

9 and 9a ... are bolts for fixing the detector mounting plate 5, 1
0, 10a ... Bolts for fixing the washers 8, 8a, 11 an electric cord of the load detecting device 7, and 12 holes for inserting the electric cord 11 formed in the standing wall of the lower plate 4.

Reference numeral 13 denotes a thin plate having an appropriate width which is horizontally fixed between the washers 8 and 8a, and has a mounting plate 14 above the load detecting device 7 and an upper part of the plate 13 and a load detecting device below the plate 13. Attach the mounting plate 15 that comes into contact with the detection head 6 of 7 to the bolts 16 and 1
They are fixed in the same position by 6a.

Numerals 17 and 17a are latches for fixing the end portion of the plate 13 to the upper portions of the washers 8 and 8a, and the portions are fixed by bolts 18, 18a ....

Reference numeral 19 denotes a bottom plate on which the personnel and equipment are directly placed, and the bottom plate 19 is fixed to the mounting metal 14 by a bolt 20 via a reinforcing angle 21.

22 and 22a are pipes and the like that originally exist inside the gondola 2.

Next, the operation of the safety device in the aerial work vehicle according to the present invention will be described. The weight of the personnel and equipment mounted on the bottom plate 19 in the gondola 2 bends in the vertical direction because the plate 13 is a thin plate, 4 is detected by the load detection device 7 via the mounting metal 14 and the mounting plate 15.
Calculates the total weight of the detection parts 1, 1a ... at a certain position and issues a warning when the set weight is exceeded, and also the bottom part 3 of the gondola 2
The bottom plate 19 and the bottom plate 19 are fixed to each other through the plate 13, washers 8, 8a, etc., and the plate 13 does not move in the front-back, left-right direction on the horizontal plane because the plate 13 has a flat area, and the bottom plate 19 shifts or moves laterally. Instead, the weight is accurately detected by the detectors 1, 1a ....

[Effect of device]

In short, according to the present invention, the load detecting device 7 is fixed to the bottom portion 3 of the gondola 2, the washers 8 and 8a are attached to both sides of the load detecting device 7, and the plate 13 is fixed between the washers 8 and 8a. Since the mounting metal 14 and the mounting plate 15 that abuts the load detecting device 7 are fixed above and below the bottom plate 19, and the bottom plate 19 is fixed to the mounting metal 14, the weight of the personnel and equipment on the bottom plate 19 is the plate 13 in the vertical direction. It is bent and detected by the load detection device 7. Therefore, in case of overload, a warning is issued to ensure safety, and the bottom plate 19
Is fixed via the plate 13, and since the plate 13 is strong in the horizontal direction, it is possible to prevent the bottom plate 19 from being displaced or laterally moved, and thus the weight on the bottom plate 19 can be accurately detected. It will be.

[Brief description of drawings]

1 shows an embodiment of the present invention. FIG. 1 is a plan view of a gondola, FIG. 2 is a cross-sectional view of a main part of a detection part, and FIG. 3 is an exploded perspective view of the detection part. 1, 1a ......... Detector, 2 ... Gondola, 3 ... Bottom, 7
...... Load detection device, 8, 8a ...... Washer, 13 ...... Plate,
14 …… Mounting gold, 15 …… Mounting plate, 19 …… Bottom plate

Claims (1)

[Scope of utility model registration request] 1. A load detecting device is fixed to the bottom of a gondola,
Characterized in that washers are attached to both sides of the load detection device, plates are fixed between the washers, a mounting plate and a mounting plate abutting against the load detection device are fixed above and below the plate, and a bottom plate is fixed to the mounting plate. Safety equipment for aerial work vehicles.