JPH0115681Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to concrete sleepers used for railroad cars, etc., and particularly relates to concrete sleepers with lifting holes.

<Prior Art> Wooden sleepers have traditionally been used for railroad cars, etc., but in recent years, these wooden sleepers have been replaced with concrete sleepers. This seems to be due to problems such as durability and manufacturing cost.

However, concrete sleepers are considerably heavier than wooden sleepers, and are therefore extremely difficult to handle. Therefore, during the installation work, etc., there was a problem that there were many injuries such as workers getting their hands caught in the concrete sleepers.

In addition, precision is required when laying concrete sleepers, but as mentioned above, they are quite heavy and there is nowhere to put your hands on them, so it takes a considerable amount of time to fine-tune the work of laying concrete sleepers. Problems such as increased cost also arose.

<Purpose of the invention> Thus, the present invention was devised in view of these conventional problems, and in the work of laying extremely heavy concrete sleepers, it is difficult for workers to lay concrete sleepers as in the past. Lifting holes have many advantages, such as preventing injuries such as getting your hands caught in the work, making it possible to make fine adjustments in a short time when laying concrete sleepers, which requires precision, and reducing construction costs. The purpose of this invention is to provide a concrete sleeper with a concrete sleeper.

<Structure of the invention> The concrete sleeper with lifting holes according to the invention has a substantially rectangular shape on both sides of the long and heavy concrete sleeper, which has a substantially rectangular parallelepiped shape. A burying tool is buried therein, comprising a locking plate each having a plurality of raised claws, and a cylindrical pipe fixed by penetrating the locking plate approximately at right angles; A reinforced lifting hole is formed by communicating the openings for the lifting hole formed in both side walls of the sleeper and the hole of the cylindrical pipe of the embedding tool.

<Embodiments of the invention> The invention will be described below based on embodiments shown in the drawings.

In the drawings, symbol A indicates a concrete sleeper. The concrete sleeper A has a substantially rectangular parallelepiped shape, and is long and heavy.

Further, reference numeral 1 indicates a side wall of this concrete sleeper A. This side wall 1 is formed as a slope having a steep slope from the top to the bottom.

Further, reference numeral 5 indicates an embedding tool. This embedding tool includes a locking plate 3 having a substantially rectangular shape, and a cylindrical pipe 6 which is inserted through the locking plate 3 in a substantially perpendicular direction and fixed thereto. By the way, the locking plate 3 has a plurality of raised claws 7, which are cut and raised on the front and back sides of the locking plate 3, respectively, in its upper part.

Further, a through hole is formed below the center of this locking plate 3, and a cylindrical pipe 6 is inserted into this through hole.
is inserted through the locking plate 3 and fixed to the locking plate 3.

Note that the material of the burying tool 5 is not limited at all, and may be formed of a metal member,
Alternatively, it may be formed of a synthetic resin material.

Thus, the embedding tool 5 is constructed as described above. Then, this embedding tool 5... will be buried in both side walls 1, 1 of the concrete sleeper A.

By the way, in this burying, when forming the concrete sleeper A, the embedding tools 5 are also buried in the concrete.

That is, the embedding tool 5 is installed in advance in the formwork of the concrete sleeper A, and then concrete is poured into the formwork, and then,
When the concrete hardens, the embedding tools 5... are buried and fixed in both side walls 1, 1 of the concrete sleeper A.

By the way, the hole 8 of the cylindrical pipe 6 of the burial tool 5
are communicated with openings 4 for lifting holes formed in both side walls 1, 1 of concrete sleeper A.
That is, to hold the embedded tools 5 in the formwork of the concrete sleeper A, a locking rod is inserted from the outside of the formwork to the inside. Then, the cylindrical pipe 6 of the embedding tool 5 is fitted onto the locking rod protruding into the formwork so that it can be held.

Therefore, when the formwork of the concrete sleeper A is removed from the mold after the concrete has solidified, the embedding tools 5... are attached to both side walls 1, 1 of the concrete sleeper A.
An opening 4 for a lifting hole is embedded in the concrete sleeper and formed in both side walls 1, 1 of the sleeper.
The hole 8 of the cylindrical pipe 6 of the embedding tool 5 will be in communication with each other.

Therefore, both side walls 1, 1 of concrete sleeper A
Lifting holes 2, 2 reinforced by the embedding tool 5 are formed in the holes 2, 2.

Note that a pair of these lifting holes 2, 2 may be formed so as to face the both side walls 1, 1 of the concrete sleeper A, but usually they are formed on both ends of the both side walls 1, 1 of the concrete sleeper A. They will be formed in a total of four locations, one pair each.

Next, the usage conditions of the concrete sleeper A with lifting holes according to the present invention will be explained.

First, the insertion rod of the lifting jig is inserted into the lifting holes 2 formed in both side walls 1, 1 of the concrete sleeper A. Then, from this state, the lifting jig is lifted upward, and the concrete sleeper A is quickly moved and transported.

In other words, instead of the worker having to lift and move the heavy concrete sleeper A with both hands as in the past, the worker can move it safely and quickly by simply inserting the insertion rod into the lifting hole 2 and lifting it upward. This means that the work can be done.

<Effect of invention> Thus, the present invention has the above configuration.

Furthermore, with the concrete sleeper with lifting holes according to the present invention, there is no need for the worker to lift and move the heavy and long concrete sleeper A with both hands as in the past, so the worker can carry out the construction work easily. This allows concrete sleepers to be laid extremely safely without causing any injuries.

Furthermore, fine adjustments to the sleeper installation work can be made accurately and easily while holding the insertion jig inserted into the lifting hole, so fine adjustments can be made quickly and safely.

In addition, since this lifting hole 2 is reinforced by the embedding tool 5..., the concrete sleeper will not be damaged from the part of this lifting hole 2, and the durability of the product itself can be increased. be.

As described above, the concrete sleeper A according to the present invention has excellent effects.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of the concrete sleeper with lifting holes according to the present invention, Figure 2 is a side view of the concrete sleeper according to the present invention, and Figure 3 is a partially cutaway view of the concrete sleeper with lifting holes according to the present invention.
The figure is an enlarged view showing the main parts of the concrete sleeper according to the present invention. A... Concrete sleeper, 1... Side wall of concrete sleeper, 2... Lifting hole, 3... Locking plate, 4... Opening for lifting hole, 5... Burying tool, 6...
...Cylindrical pipe, 7...Cut-up claw, 8...Hole of cylindrical pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] A substantially rectangular parallelepiped-shaped long and heavy concrete sleeper has cut-outs on both sides of the sleeper that are raised on the front and back sides of the sleeper. A lifting device formed on both side walls of the concrete sleeper, comprising a locking plate having a plurality of claws, and a cylindrical pipe fixed to the locking plate by penetrating the locking plate in a substantially perpendicular direction. A concrete sleeper with a lifting hole, characterized in that the hole opening and the hole of the cylindrical pipe of the embedding tool are communicated with each other to form a reinforced lifting hole.