JPH0547178Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a concrete block lifting tool capable of lifting a substantially L-shaped concrete retaining wall block without knocking it down.

[Problems to be solved by conventional techniques and ideas]

Conventionally, concrete blocks with L-shaped sides, such as retaining wall blocks, have not been easy to lift due to their shape.

In addition, when attempting to accurately obtain the verticality of a retaining wall, suspending and lowering the retaining wall in the correct vertical state is an important issue in construction work.

The present invention provides a concrete block hoisting device that can adjust the hanging posture using a fine adjustment device to always maintain the correct vertical position and suspend the concrete block.

[Means to solve the problem]

A detailed description will be given below with reference to the accompanying drawings showing an example of implementation.

A concrete block a has a base plate 1 and a wall plate 2 arranged in a substantially L-shape on its side, and a lifting wire 4 attached to hook bolts 3 provided at two places on the left and right sides of the top surface of the base plate 1 and a stopper attached to the upper edge of the wall plate 2. This concrete block lifting tool comprises a lifting wire 4 positioning device 7 which is movably provided with a guide ring 6 for regulating the lifting position of the lifting wire 4 on a fixing body 5 to be attached.

[Effect]

The fixing body 5 is fixed to the center of the upper edge of the wall plate 2 of the concrete block a, the guide ring 6 is set in the fixed position by the positioning device 7, the lifting wire 4 is passed through the guide ring 6, and When the lower end of the lifting wire 4 is hung on each of the hook bolts 3 and the lifting wire 4 is lifted,
The concrete block a is lifted up while the wall plate 2 remains substantially vertical and the base plate 1 remains substantially horizontal.

Also, lower the lifting wire 4, remove it from the left and right hook bolts 3, and pull out the lifting wire 4 from the guide ring 6.
Concrete block a comes off from lifting wire 4.

Moreover, when the fastening body 5 is removed from the concrete block a, the fastening body 5 can be fixed to another concrete block a.

〔Example〕

The base plate 1 in the drawings shows a case where the base of the hook bolt 3 is provided approximately at the center of each of the left and right sides.

The fastening body 5 in the drawing has a tightening bolt 9 screwed into the rear part of a mounting bracket 8 placed on the wall board 2 so as to be able to move forward and backward, and a holding rubber disc 1 is attached to the tip of the tightening bolt 9.
The figure shows a case where 0 is provided.

The positioning device 7 in the drawings has a female threaded part 11 formed on the upper part of a mounting bracket 8, a male threaded part 12 is screwed into this female threaded part 11, and a guide ring 6 is attached to the tip of this male threaded part 12. Although the position of the lifting wire 4 is adjusted by moving the guide ring 6 forward and backward by rotating the male threaded portion 12, a handle may be provided to facilitate the adjustment.

The lower part of the lifting wire 4 in the drawing is divided into two parts, and a hanging ring 14 is formed at the lower end of each branch wire 13.

In the figure, reference numeral 15 is a rubber plate, 16 is a lifting ring, 17 is a slide guide cylinder, 18 is a slide rod, 19 is a knob, and 20 is a receiving piece for the tightening bolt 9.

The lifting wire 4 is preferably attached so as to hang over the center of gravity of the concrete block a.

[Effect of idea]

Since the present invention is constructed as described above, the anchoring body is fixed to the wall plate of the concrete block, the lifting wire is passed through the guide ring by the positioning device, the lower end of the lifting bolt is hooked to the hook bolt of the base plate, and the lifting wire is lifted. By lifting the concrete block, the concrete block is lifted with the base plate of the concrete block remaining almost horizontal and the wall plate of the concrete block remaining almost vertical.

In addition, by lowering the lifting rope, removing the lifting wire from the hook bolt, removing the lifting wire from the guide ring, and removing the anchoring body from the wall plate, the lifting wire and anchoring body can be used to lift another concrete block. .

Furthermore, concrete blocks can be formed relatively easily by providing hook bolts on the base plate.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view, FIGS. 2 and 3 are sectional views of the main parts, and FIG. 4 is a perspective view of the device in use. a... Concrete block, 1... Base plate, 2
... Wall plate, 3 ... Hook bolt, 4 ... Lifting wire, 5 ... Fixing body, 6 ... Guide ring,
7...Positioning device.

Claims (1)

[Scope of utility model registration request] A concrete block with a base plate and a wall plate arranged in a roughly L-shape on the side is lifted by a lifting wire attached to hook bolts installed at two places on the left and right sides of the top surface of the base plate, and a fastening body fixed to the upper edge of the wall plate. A concrete block lifting tool consisting of a lifting wire positioning device with a movable guide ring that regulates the lifting position of the wire.