JPS5916388Y2 - Reversing lifting tool for concrete products - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reversing tool for secondary concrete products such as U-shaped side gutters.

In recent years, the number of types and quantities of secondary concrete products used in construction work has been surprisingly large.The main reason for this is the construction process, the desire to shorten the construction period, and the client's desire for high-quality construction using economical, high-quality products. Depends on being there.

These secondary concrete products have different standards, shapes, and dimensions, and in recent years, many of the products have become very heavy, resulting in a constant occurrence of industrial accidents during construction.

In addition, great care is taken in the transportation and installation of secondary concrete products, but the construction site is greatly affected by weather conditions and the difficulty of scaffolding. This seems to be due to the fact that there are few products that are designed to be easy to use.

Recently, most of the small-scale waterways and gutters are made of secondary concrete products, and the number of long ones is increasing.

Incidentally, since U-shaped grooves and concrete secondary products are generally placed upside down on site, they are sometimes installed by inverting them, but this inversion work has traditionally been done manually by multiple workers.

However, when the U-shaped groove becomes large, it is heavy, difficult to handle, and unstable.

In addition, during the severe cold season, gloves are used to handle the work, so there is a risk of the worker getting their hands caught or dropping the product on their foot, and especially elderly workers who do not have enough grip strength to lift it and may drop it on their foot. was there.

Thus, the present invention was devised to eliminate such conventional drawbacks, and the present invention will be explained below based on embodiments shown in the drawings.

FIG. 1 is a front view showing a reversing lifting tool A for a concrete product B.

In the drawings, reference numeral 1 indicates a horizontal member.

Moreover, the code|symbol 3 shows a support member.

The support member 3 is substantially perpendicular to both ends of the horizontal member 1,
and is swingably mounted.

That is, the mounting portions 2 formed at both ends of the horizontal member 1,
Support members 3, 3 are suspended from 2.

Note that the supporting members 3, 3 are made of wire rope or the like.

A reversing member 4 is attached to the tip of the supporting member 3.

The structure of this reversing member 4 will be explained with reference to the drawings.

In the figure, the reference numeral 20 is the main body of the reversing member 4.

The member main body 20 is formed as a substantially rectangular case.

A connector 21 is attached to the upper part of the member body 20 to connect the support members 3, 3, such as wire ropes, to the member body 20.

In addition, a through hole 22 is formed in the lower part of the member main body 20 by a pipe or the like.
is formed, and the insertion rod 7 is inserted into the through hole 22.

Approximately midway in the longitudinal direction of the insertion rod 7 is a flange portion 2 that projects outward.
3 is formed, and a male threaded portion 24 is formed at the proximal end.

A plurality of spacers 9, which may also serve as nuts 27 having a predetermined thickness, can be screwed into the male threaded portion 24.

In the above, when using this reversing member 4, the outer circumferential surface 5 of the concrete product B to be reversed is
A plurality of spacers 9 are inserted into the shaft of the insertion rod 7 in accordance with the distance between the member main body 20 of the reversing member 4, and the flange 2 is inserted into the shaft of the insertion rod 7.
Lock it at 3.

Thereafter, the insertion rod 7 is inserted into the through hole 22 from the inside of the member main body 20, and the nut 27 is screwed onto the male stub 24, so that the insertion rod 7 is rotatably attached to the member main body 20.

In addition, if a plurality of spacers 9 with different thicknesses are prepared, the outer circumferential surface 5 of the concrete product B and the member body 20 can be
It is possible to adequately deal with differences in the spacing between the two.

Next, the insertion rods 7, 7 of the inversion lifting tool according to the present invention are inserted into both the locking holes 6, 6 of the concrete product B installed upside down.

At this time, both supporting members 3, 3 are attached to both sides of the horizontal member 1 in accordance with the width of the concrete product B.

Furthermore, since the support member 3 is made of a wire rope or the like, it is easy to insert the insertion rod 7 into the locking hole 6.

Next, the hanging members 25 are attached to the attachment parts 2, 2 of the horizontal member 1, and the concrete product B is lifted up.

Then, concrete product B is turned over.

At this time, the insertion rod 7 of the reversing member 4 is connected to the concrete product B.
By injecting oil from the grease inlet 26 formed in the through hole 22, the insertion rod 7 rotates with the insertion rod 7.
It is preferable to make the rotation smooth.

After moving to the predetermined installation position, the insertion rod 7
is pulled out from the locking hole 6, and the reversing operation is completed.

Thus, the present invention has the above configuration, and the reversing lifting tool according to the present invention can easily perform the reversing work of concrete products such as U-shaped grooves, which was conventionally done manually by workers.
It also has the excellent advantage of being safe.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the present invention in use, FIG. 2 is a perspective view of the reversing member, and FIG. 3 is a sectional view of the reversing member. A...Inversion lifting tool, B...Concrete product, 1...Horizontal member, 2...Mounting part, 3... Supporting member, 4... Reversing member, 5... Outer peripheral surface, 6... Locking hole, 7...
...Insert rod, 9...Spacer, 20.
... Member body, 21 ... Connector, 22.
...Through hole, 23...Flame, 24...
...Male thread part, 25...Hanging member, 26...
...Grease inlet, 27...Natsuto.

Claims (1)

[Scope of utility model registration request] A horizontal frame member 1, surface support members 3, 3 attached to both ends of the horizontal frame member 1, and a surface support member 3, which is attached to the tip of the support member 3 and can be latched to the outer peripheral surface 5 of the concrete product B to be reversed. The reversing member 4 has an insertion rod 7 that protrudes from the substantially rectangular member main body 20 toward the outer circumferential surface 5 of the concrete product B and is rotatable with respect to the member main body 20, The outer circumferential surface 5 of the concrete product B is located between the flange 23 formed on the insertion rod 7 and the member body 20.
A reversing lifting tool for a concrete product, characterized in that a spacer 9 having a variable thickness is interposed to close the gap between the sides of the member body 20 and the side surface of the member body 20.