JPH02209392A - Lifting gear for block mat - Google Patents

Abstract

PURPOSE:To make a holding part compact in size and lighter in weight as well as to make lifting and laying work at a narrow space performable by setting up a hydraulic system for operating two pinch members in direction of being pressed under pressure, and a spring gear energized in direction of being separated both in this holding part. CONSTITUTION:A hydraulic system 12 installed in a holding part 2 is operated, a pair of pinch members 8 installed at both ends of a lifting beam is moved in the pressure-contact direction, while a superfluous end of a block mat is firmly held between these pinch members 8 and lifted up, and it is mounted on a ground surface of a normal surface or the like. Next, the hydraulic system 12 is released and these paired pinch members 8 are separated from each other, and holding force of the block mat is released, thus the block mat is laid down on the ground surface.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lifting device for a block mantle that is laid on a ground surface such as a slope to protect the ground.

[Problem to be solved by the invention]

BACKGROUND OF THE INVENTION Block mats, which are made by fixing concrete blocks to the surface of a filter material made of synthetic fiber fabric or the like that restricts the permeation of earth and sand, are widely used by being laid on the ground surface for the purpose of protecting slopes, etc. When laying this block cloak, or moving or transporting it in a factory, warehouse, etc.,
It was lifted using a lifting device. That is, the second and third
As shown in the figure, using a lifting device 3 with gripping parts 2 attached to both ends of a lifting beam l, the remaining end 7° 7 consisting of only the filter material 6 to which the blocks 5 at both ends of the block mat 4 are not fixed is moved to the gripping part. It was lifted by grasping it with 2.2.

The gripping part 2 of the conventional lifting device is, for example, pivoted by a pin 9 below the end of a beam 1 that slides and expands and contracts, and a pair of clamping members 8, 8' that clamp and grip the remaining end 7. , is provided with a manual lever handle lO for vertically moving one of the clamping members 8.

Conventional gripping sections having the above structure are generally large in size and weight, and require a large space and large heavy machinery to operate. In addition, a considerable amount of force is required to tighten the clamping member using a manual lever handle, and it cannot be operated by women or women.

This invention was made in view of the above circumstances. The purpose is to propose a block cloak lifting device that has a smaller and lighter gripping part, eliminates the need for manual handle operation, and can perform reliable work in a narrow space.

[Means and Examples for Solving the Problems] This block mat lifting device has a gripping part equipped with a pair of clamping members for clamping and gripping the remaining end of the block mat at both ends of a lifting beam. The block mat lifting device is characterized in that the gripping portion is provided with a hydraulic device that operates in a direction to press the two clamping members into contact with each other, and a spring device that is biased in a direction in which the two clamping members are moved away from each other. .

Fig. 1 shows the gripping part 2 of the lifting device of the embodiment, which is surrounded by a substantially rectangular frame 1), and is parallel to the lower clamping member 8゛ provided on the lower side of the frame, and the clamping member 8゛. It is provided with an upper clamping member 8 whose both ends are in contact with both sides of the frame and move up and down.
A hydraulic device 12 that operates in the direction of pressing the two clamping members 8 and 8° and a spring device consisting of two springs 13 and 13 that are biased in the direction of separating the upper clamping member 8 and the upper side of the frame 1) installed between. Note that two brackets 14, which are pivotally attached to the beam 1, project from the upper part of the upper side of the frame 1).

[For production]

The lifting device for this block muff consists of the above structure. This device uses a hydraulic device instead of a manual lever handle to move the clamping member up and down, making the gripping portion smaller and lighter than conventional devices. There is no need to operate the lever handle, which requires a large amount of force, and the block mat can be easily and firmly gripped by operating the hydraulic system. Further, when the hydraulic device is released, the two clamping members are automatically separated by the bias of the spring device, and the grip is released.

〔Effect of the invention〕

This invention is as described above, and has the following effects. ■The gripping part is smaller and lighter, eliminating the need for lever handle space, making lifting and laying work possible in narrower spaces. ■The gripping force of the block mat is strengthened, making work more reliable. ■The gripping part is lighter and the working radius of heavy equipment (crane) can be expanded. ■The manpower required for the work is reduced, and even women and women can operate it.

[Brief explanation of the drawing]

FIG. 1 is a front view of a gripping portion of a block mat lifting device according to an embodiment, and FIGS. 2 and 3 are a plan view and a side view, respectively, of a conventional block mat lifting device. DESCRIPTION OF SYMBOLS 1... Lifting beam, 2... Gripping part, 3... Lifting device, 4... Block mat, 5... Block,
6... Filter material, 7... Extra end, 8... Clamping member, 9... Pin, 10... Lever handle, 1)
...Frame, 12...Hydraulic device, 13...Spring, 14...Bracket. 1 writer Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] (1) In a block mat lifting device, a lifting beam is provided with a gripping part equipped with a pair of clamping members for clamping and gripping the remaining end of the block mat at both ends of the lifting beam,
A lifting device for a block mat, characterized in that the gripping portion is provided with a hydraulic device that operates in a direction to bring the two clamping members into pressure contact with each other, and a spring device that is biased in a direction that separates the two clamping members.