JPH021341Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lifting tool for a U-shaped groove block that can easily lift a concrete U-shaped groove block.

[Conventional technology]

Conventionally, the device for lifting a U-shaped groove block, as disclosed in Japanese Utility Model Application Publication No. 55-32377, is unstable because the device itself is a small device whose width is significantly narrower than the length of the U-shaped groove block. Moreover, in the case of a large U-shaped groove block, it was inconvenient that two devices had to be used side by side at both ends and both had to be lifted in a well-balanced manner.

[Problem that the invention attempts to solve]

The present invention solves this problem by forming the lifting frame body into a size that can be stored inside the U-shaped groove block in close proximity to the inner wall surface, and by forming four suspension frames at the bottom of the front and rear ends of both left and right sides. It is a technical problem to provide a lifting tool that enables stable lifting in a U-shaped groove with multiple push-in claws.

[Means for solving problems]

Four push-in claws 4 are arranged at the bottom of the front and rear ends of both left and right sides 3a of a box-frame type lifting frame 3 of a size that can be stored inside the U-shaped groove block 1 close to the inner wall surface, The tip end of this push-in claw 4 is pivoted to the lifting frame 3 side by a pivot shaft 5, and when the base end of the push-in claw 4 is rotated upward, the claw 4a is moved to the side surface 3a of the lift frame 3.
The lower ends of the four hanging wires 6 are fixed to the base end of the push-in claw 4, and the other ends of the hanging wires 6 are attached to the upper center of the U-shaped groove block 1. The lower ends of the hanging rods 9 are fixed to the four corners of the upper surface 3b of the lifting frame 3, and the upper ends of the hanging rods 9 are gathered at the center above the U-shaped groove block 1. This relates to a lifting tool for a U-shaped groove block, which is characterized in that a hook 13 is provided at this gathering part.

[Effect]

When the hanging ring 14 is removed from the hook 15 of the wire with which the hanging ring 14 is engaged, the hanging wire 6 becomes slack, and the toe 4a of the push-in claw 4 slides inward under its own weight, causing the toe 4
a is recessed inward from both side surfaces 3a of the lifting frame 3.

In this state, hook 13 of suspension rod 9 is connected to hook 15 of
, hang the lifting frame 3 and attach it to the U-shaped groove block 1.
Lower it and store it inside.

After removing the hook 13 from the hook 15, the hanging ring 14 of the hanging wire 6 is hung on the hook 15, and when the wire is used to lift it up, the hanging wire 6 is pulled, so the push-in claw 4 slides around the pivot shaft 5, and the claw tip 4a protrudes outward from the side surface 3a of the lifting frame 3,
The toes 4a at the front, rear, left, and right locations strongly press the inner wall surface of the U-shaped groove block 1, and the lifting frame 3 and the U-shaped groove block 1 are integrated. The U-shaped groove block 1 is lifted up as it is and transported to a desired location.

After transportation, if the hanging wire 6 is slackened, the push-in claw 4
returns to its original position under its own weight, so the pressed state of the toe 4a is released.

In this state, the hanging ring 14 is removed from the hook 15, the hook 13 of the hanging rod 9 is hung on the hook 15, and the lifting frame 3 is pulled up from the U-shaped groove block 1.

〔Example〕

The push-in claw 4 has a U-shaped cross section and is provided with a mounting rod 7 on the base end side, to which the lower end of the hanging wire 6 is fixed.

The hook 13 of the hanging rod 9 is not hung directly on the hook 15, but is hung via a hanging ring 11 with a hook 12 attached thereto.

In the figure, reference numeral 2 is a hanging member consisting of a hanging rod 9 and a hook 13, reference numeral 8 is a wire end, and reference numeral 10 is a device for preventing the U-shaped groove block 1 from opening.

[Effect of idea]

As described above, the present invention has a box-frame type lifting frame 3 that is sized to be stored inside the U-shaped groove block 1 in close proximity to the inner wall surface, and has claws pushed into the lower portions of the front and rear ends of both left and right sides 3a. 4 are arranged, and the tips of the push-in claws 4 are pivoted to the lifting frame 3 side by the pivot shaft 5, and when the base end of the push-in claws 4 is rotated upward, the claws 4a
is provided so as to slightly protrude outside from the side surface 3a of the lifting frame 3, and the lower ends of the four hanging wires 6 are fixed to the base end of the push-in claw 4, and the other end of the hanging wire 6 is When the hanging ring 14 is pulled up after being gathered in the upper center and fixed to the hanging ring 14, the toes 4a of the four push-in claws 4 are locked to the inner wall surface of the U-shaped groove block 1, and the Since the U-shaped groove block 1 is lifted at certain points, balanced lifting is possible at all times, and safe lifting work is possible.

In this case, the push-in claws 4 are each independent, the hanging wire 6 is fixed to each, and the push-in claws 4 are of a type that slides, so the pressing and locking force of each push-in claw 4 is uniform, and the U The four parts of the U-shaped groove block 1 are pressed and locked to integrate the lifting frame 3 and the U-shaped groove block 1, and the U-shaped groove block 1 can be lifted safely.

In addition, the structure is simple and manufacturing is easy, and a low-cost product can be provided.

In addition, hanging rods 9 are attached to the four corners of the upper surface 3b of the lifting frame 3.
Fasten the lower end of the , and gather the upper end at the center above.
Since a hook 13 is provided at this gathering part, the lifting frame 3
When lowering and storing in the U-shaped groove block 1, the hanging ring 14 is removed from the hook 15, the hanging wire 6 is left slack, and the hook 13 of the hanging rod 9 is moved to the hook 15.
By lowering the lifting frame 3 into the U-shaped groove block 1, the lifting frame 3 can be lowered with the tip 4a of the push-in claw 4 recessed inside the side surface 3a of the lifting frame 3. 4a does not get in the way, the lifting frame 3 can be easily lowered and stored in the U-shaped groove block 1, and since the hanging rods 9 are also gathered at the center, the lifting frame 3 can be hung in a well-balanced manner. can be lowered.

After storage, the hook 13 is removed from the hook 15, the hanging ring 14 of the hanging wire 6 is hung on the hook 15, and the lifting operation described above can be easily performed.

This switching also changes hook 13 of hanging rod 9 to hook 1.
5, and the hanging ring 14 of the hanging wire 6 is hung on and removed from the hook 15, so it is easy to work and has many excellent practical effects. It is something that you have.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the proposed product, and Fig. 2 is a side sectional view of the main parts. 1... U-shaped groove block, 3... Lifting frame body, 3a
...Side surface, 3b...Top surface, 4...Pushing claw, 4a...
... Toe, 5 ... Pivot shaft, 6 ... Hanging wire, 9 ...
...hanging rod, 13... hook, 14... hanging ring.

Claims (1)

[Scope of utility model registration request] Four push-in claws 4 are arranged at the bottom of the front and rear ends of both left and right sides 3a of a box-frame type lifting frame 3 of a size that can be stored inside the U-shaped groove block 1 close to the inner wall surface, The tip end of this push-in claw 4 is pivoted to the lifting frame 3 side by a pivot shaft 5, and when the base end of the push-in claw 4 is rotated upward, the claw 4a is moved to the side surface 3a of the lift frame 3.
The lower ends of the four hanging wires 6 are fixed to the base end of the push-in claw 4, and the other ends of the hanging wires 6 are attached to the upper center of the U-shaped groove block 1. The lower ends of the hanging rods 9 are fixed to the four corners of the upper surface 3b of the lifting frame 3, and the upper ends of the hanging rods 9 are gathered at the center above the U-shaped groove block 1. , a lifting tool for a U-shaped groove block, characterized in that a hook 13 is provided at this gathering part.