JPH02101235A - Drawing method for on-site construction of concrete guide groove and device therefor - Google Patents

Abstract

PURPOSE:To quickly perform the drawing work by driving a wedge-shaped connecting key into an insertion section to provide the drawing function on the connecting medium of a concrete guide groove or leaving it to function as a connecting means between both preceding and succeeding guide grooves. CONSTITUTION:The first guide face 6 is formed with the connection coupler forming member 5 of a preceding concrete guide groove 1, the second guide face 8 is formed with the coupler forming member 7 of a succeeding guide groove 2, and an insertion section 9 to be driven with a connecting key 4 between both mating faces 6 and 8. When the key 4 is driven, the component of force generated between the first and second wedge faces 10 and 11 of the key 4 and the mating faces 6 and 8 is applied to the guide groove 2 by the connection coupler forming member 7 as the drawing force. The connecting key 4 is left to function as a connecting means between the constructed preceding guide groove and the succeeding guide groove to be constructed. The connection between guide grooves can be firmly maintained.

Description

[Detailed description of the invention] Industrial application field The present invention is applicable to box culverts, etc.
A number of concrete grooves such as 5-shaped grooves are connected to create waterways,
The present invention relates to an on-site construction method for forming wiring paths and the like, and in particular to a method and apparatus for drawing the above-mentioned concrete forming grooves in the on-site construction.

Prior Art Conventionally, in on-site construction of the above-mentioned concrete forming grooves, in order to closely join each shaped groove, a connecting joint is provided at the joint site in advance, and this is fastened with bolts and nuts. The first method used was to draw the trailing concrete shaping groove closer to the already constructed preceding concrete shaping groove and to connect both concrete shaping grooves.

Problems to be Solved by the Invention However, the bolt fastening method described above has the drawback that it requires a great deal of time and effort to tighten the bolts at several locations, and also tends to cause deviations in the threading pitch of each bolt, and such deviations If this occurs, the bolt may bite firmly into the female thread, making it difficult to fasten and causing a loose joint.

The present invention solves the above problems, allows the pulling operation to be performed simply and quickly without much effort, and provides a strong and sound connection.

Means for Solving the Problems The present invention uses a wedge-shaped connecting key as a connecting medium for the connecting joint in the concrete forming groove, and drives the wedge-shaped connecting key into a key intervention part formed by the connecting joint forming member. By inserting the wedge into the concrete forming groove, the wedge-shaped connecting key is left to provide a function to pull the concrete forming groove to be constructed using the wedge action, and the wedge-shaped connecting key is left to connect it to the previously constructed concrete forming groove. The present invention provides a method for pulling in a concrete shaping groove in on-site construction, and a fitting trowel that also functions as a means for connecting with a trailing concrete shaping groove.

According to the present invention, by simply hammering the wedge-shaped connecting key into the key intervention part of the connecting joint using a hammer or the like, the concrete forming groove can be pulled in very easily due to the wedge action, and the pulling work can be done quickly. can be done. Furthermore, by leaving the wedge-shaped connecting key in the driven state, it is possible to firmly maintain the connection between the concrete forming grooves. Therefore, the labor and time involved in pulling the concrete forming grooves are greatly reduced, and a strong and sound connection can be achieved without any joining defects such as deviation or poor adhesion at the joining interface.

EXAMPLES Hereinafter, examples of the present invention will be explained based on FIGS. 1 to 6.

In on-site construction of concrete forming grooves that form waterways, wiring paths, etc., when connecting the preceding concrete forming groove 1 and the following concrete forming groove 2 via the connecting joint 3, the connecting medium of the connecting joint 3 is used. As described above, the wedge-shaped connecting key 4 is used.

The first guide surface 6 is formed by the connecting joint forming member 5 of the preceding concrete forming groove 1, and the following concrete forming groove 2
A second guide surface 8 is formed by the connecting joint forming member 7 of the first. The second guide surfaces 68 are opposed to each other, and a key intervention portion 9 into which the wedge-shaped connecting key 4 is driven is formed between the two opposing surfaces.

The wedge-shaped connecting key 4 has a first wedge surface lO and a second wedge surface lO forming a V shape.
It has a wedge surface 11. Preferably, the first wedge surface 10 is an inclined surface with respect to the drawing direction, and the second wedge surface 11 is a surface that is perpendicular to the drawing direction.

Similarly, the first guide surface 6 is formed as an inclined surface parallel to the first wedge surface 10 so as to be in contact with the same wedge surface 10, and the second guide surface 8 is formed as a right-angled surface parallel to the second wedge surface 11. and is brought into contact with the wedge surface 11.

By driving the wedge-shaped connecting key 4 into the key intervening portion 9 with a hammer 12 or the like, the V-shaped first. The second wedge surfaces 10, 11 and the first wedge surface. The component force generated between the second guide surfaces 6 and 8 is applied as an attracting force to the second guide surface 8 and the connecting joint forming member 7, and is passed through the connecting joint forming member 7 to the trailing concrete forming groove 2. give to

As a result, the same-shaped groove 2 is drawn toward the preceding concrete forming groove 1 side.

As a specific example of the above-mentioned connecting joint 3, one end of the connecting arm forming the connecting joint forming member 7 is fixed to the inner surface of the joining end of the trailing concrete 1 and the forming groove 2 with a bolt 13, and the other end is fixed to the leading concrete. The joint end of the shaping groove 1 extends toward the inner surface, and its tip is bent at a right angle to form the second guide surface 8 .

In order to bolt the connecting arm, an embedding nut 14 is embedded in the concrete forming groove 2, and a bolt 13 is screwed into the nut 14 through a mounting hole 15 formed at the end of the connecting arm to perform the fixing.

On the other hand, a guide member having a guide piece 16 for guiding the movement of the connecting arm is attached to the inner surface of the joint end of the preceding concrete forming groove 1 as the connecting joint forming member 5 with a bolt 17, and a bolt 17 is attached to the connecting arm serving as the connecting joint forming member 7. The bolt 17 is slidably fitted onto the long length 18 provided, and the connecting arm is supported by the guide piece 16 to guide the movement in the drawing direction. The first guide surface 6 is formed.

For example, the guide member which is the connecting joint forming member 5 is made of a U-shaped plate material, the bent part forms the guide piece 16, a mounting hole 19 is provided in the back plate part, and a bolt 17 is provided in the mounting hole 19.
is inserted, and the bolt 17 is screwed into the embedded nut 20 buried in the concrete forming groove 1 and tightened. At this time bolt 17
The shaft is a two-step bolt with a larger diameter on the head side, and the stepped part 21 of the large diameter part 22 presses and fixes the back plate of the guide member, and the large diameter part 22 connects the bolt head and the guide. A gap is formed between the members, and the large diameter portion 22 is slidably fitted into the elongated portion 18 while the connecting arm is fitted into the gap.

The enlarged end of the wedge-shaped connecting key 4 is bent into a key shape, and the bent piece serves as a locking piece 23.

The connecting joint forming member 5 forming the connecting joint 3 is attached to one end of each concrete shaping groove, the connecting joint forming member 7 is attached to the other end of the same shaped groove, and each concrete shaping groove is They are sequentially connected via a connecting joint 3 and a wedge-shaped connecting key 4.

When the wedge-shaped connecting key 4 is filled into the key intervention part 9 and the driving piece 23 is hammered in using a hammer 12 or the like, the first wedge surface 10 comes into sliding contact with the first guide surface 6, and the second guide surface The second wedge surface 11 is driven in sliding contact with the first wedge surface 8, and as the driving progresses, the first wedge surface 11 is driven in. The first guide surface 6.8 corresponds to the second guide surface 6.8. 2nd wedge surface to,
Since the wedge action by it works and the pre-concrete forming groove 1 that has already been constructed is in an immobile state, all the component forces generated by the wedge action are applied to the second guide surface 8 as an attracting force W, and further A pulling force W is applied to the connecting joint forming member 7, and the unfinished trailing concrete forming groove 2 is pulled toward the preceding concrete forming groove 1 through the connecting joint forming member 7. At this time, the connecting joint forming member 7 is connected to the guide piece 16.
The robot moves correctly in the drawing direction without tilting while being supported by the robot.

For example, concrete forming grooves such as box culverts 1.
2 is provided with a gasket on its joint surface, and by driving the wedge-shaped connecting key 4, the gasket is compressed and a close connection is achieved.

The wedge-shaped connecting key 4 remains in the driven state to maintain a strong connection between both concrete forming grooves 1 and 2.

It should be noted that a plurality of the above-mentioned connecting joints 3 can be provided at key points in each concrete forming groove, and they can be provided on the inner surface of the same-shaped groove or attached to the outer surface.

As described in detail, according to the present invention, the wedge-shaped connecting key as described above is used as the connecting medium of the connecting joint of the concrete forming grooves to be connected, and the wedge-shaped connecting key is formed on the connecting joint. By simply driving the key into the intervention part using a hammer or the like, the wedge action of the key makes it extremely easy to pull the concrete forming groove together, and the pulling work can be done quickly.

Furthermore, by leaving the wedge-shaped connecting key in the driven state, it is possible to firmly maintain the connection between the concrete forming grooves.

Therefore, the above-mentioned pulling can be performed efficiently with reduced labor and work time without spending a lot of pulling time and labor as in the conventional bolt tightening and pulling method. It is possible to perform a sound and strong joint without any defects without causing tightening defects due to shifting.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a connecting structure between concrete forming grooves according to an embodiment of the present invention before the wedge-shaped connecting key is driven in, and Fig. 2 shows the state when the wedge-shaped connecting key is started to be driven. FIG. 3 is a perspective view showing the wedge-shaped connecting key in a state in which driving is completed, FIG. 4 is a sectional view taken along the line A-A in FIG. 1, and FIG. In order to explain the wedge action of the wedge-shaped connecting key, a partially sectional front view of the intervening part of the key is shown, and Fig. 6 shows a state in which a large number of concrete forming grooves are connected using the wedge-shaped connecting key to form water channels, etc. FIG. DESCRIPTION OF SYMBOLS 1... Leading concrete forming groove, 2... Following concrete forming groove, 3... Connecting joint, 4... Wedge-shaped connecting key, 5.7... Connecting joint forming member, 6... - First guide surface, 8... Second guide surface, 9... Key intervention part, 10
...first wedge surface, 11...second wedge surface. Page 1 cleansing (No change in 2) Figure 1 Procedural Amendment

Claims (2)

[Claims] (1) In on-site construction of concrete forming grooves forming waterways, wiring paths, etc., when connecting the preceding concrete forming groove and the following concrete forming groove via a connecting joint, it is used as a connecting medium for the connecting joint. Using a wedge-shaped connecting key, drive the wedge-shaped connecting key into the key intervention part formed by the connecting joint forming member of the preceding concrete forming groove and the connecting joint forming member of the following concrete forming groove, and press the wedge-shaped connecting key. A pulling force is applied to the connecting joint forming member of the trailing concrete forming groove by the wedge action, and the trailing concrete forming groove is drawn toward the preceding concrete forming groove via the connecting joint forming member. and a pulling method for concrete forming grooves in on-site construction, characterized in that the connection between both concrete forming grooves is maintained by leaving the wedge-shaped connection key. (2) A device used for on-site construction of concrete forming grooves for forming waterways, wiring paths, etc., which is equipped with a connecting joint that connects the preceding concrete forming groove and the following concrete forming groove; Equipped with a wedge-shaped connecting key as a connecting medium,
A key intervening part is formed by the connecting joint forming member of the preceding concrete forming groove and the connecting joint forming member of the following concrete forming groove, and the wedge-shaped connecting key is driven into the key intervening part. In addition to connecting the shaping grooves, the wedge action of the wedge-shaped connecting key applies a pulling force to the connecting joint forming member of the trailing concrete shaping groove, thereby connecting the trailing concrete shaping groove to the preceding concrete shaping. A pulling device for on-site construction of a concrete forming groove, characterized in that it is configured to be pulled toward the groove side.