JPH0660631U - Jig for suspending core material - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Regarding the jig for suspending the core material, the core material that can smoothly release the connection between the H steel core material for the jig and the building core material. To provide a hanging jig. [Structure] An H steel core material 37 for a jig having two plates 43 and 45 having pin insertion holes 41 attached to the lower end thereof,
The rotary member 47 is rotatably attached to a shaft that is installed between the flanges 37b of the H steel core material for jigs, and is rotatably attached to the rotating member 47 to which the operation wire 53 extending from the ground is connected, and the rotating member. The operation wire 53 is inserted into the pin insertion hole 41, and a retaining bar insertion portion is formed at the distal end of the insertion side.
The rotation of the rotating member 47 by the pulling operation of the pin insert hole 41
It is composed of a fixing pin 55 that is pulled out from the above, and a retaining bar 57 that extends from the ground and is inserted into the pin insertion hole 41 when the core member 37 is built up to position the fixing pin 55 to prevent the fixing pin from coming off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a hanging jig used for building a mountain stopper core material and the like.

[0002]

[Prior art]

 In constructing underground structures such as civil engineering and buildings, cliff retaining work has been conventionally performed to prevent collapse deformation of the excavated portion and the surrounding ground, and various conditions are used as this cliff retaining method. There are many known construction methods of mountain stop walls.

Then, as one of the construction methods, for example, an earth auger is used to stir the ground, and at the same time bentonite mortar is press-fitted to make a soil pillar, and a core material such as H steel is built in the pillar. There is a soil pile method that continuously constructs a cliff wall, and this method has the advantage that the amount of earth and sand carried out is small because soil pillars are made using the earth and sand as it is.

By the way, conventionally, in the work of assembling the core material of this type, a hanging jig (drop attachment) may be used in order to secure the assembling accuracy. That is, as described above, in the soil pile method, the core material is built in the soil pillar and the mountain retaining wall is continuously constructed, but at the early stage when the core material is built in the soil pillar, the bentonite mortar is still soft. Therefore, it is necessary to support the core material for positioning. Therefore, a suspending jig was attached to the upper part of the core material, and the core material was supported by a crane from the ground via this suspending jig, and when the bentonite mortar had hardened to some extent, the suspending jig was suspended. The jig is removed from the ground and pulled up.

FIG. 6 is a perspective view of a main part of a conventional hoisting jig. In the figure, 1 is an H steel core material for a jig that is suspended from the ground by a crane, and as shown in FIG. At the lower end, plates 5 and 7 with pin insertion holes 3 coaxially drilled are attached to both sides of the web 1a, and between the plates 5 and 7, H steel core material to be built in a soil column. The upper end of the web 9a of 9 can be inserted. A pin insertion hole 11 having the same diameter as the pin insertion hole 3 is also formed in the upper part of the web 9a of the H steel core material 9. As shown in FIG. 7, the web 9a is formed between the plates 5 and 7. When inserted, the pin insertion holes 3 and 11 are positioned coaxially.

Further, in the figure, 13 is a lock device 13 mounted on the plate 5, and the lock device 13 has a cylindrical body 15 attached coaxially with the pin insertion hole 3 and an arrow inside the cylindrical body 15. It is composed of a pin 17 movable in the A and B directions, a spring 19 for urging the pin 17 in the arrow B direction, and a lock release pin 21.

A pin insertion hole 23 communicating with the pin insertion hole 3 is formed at one end of the cylindrical body 15, and the other end of the cylindrical body 15 is attached to an end of a pin 17. A rod insertion hole 27 through which the push rod 25 is inserted is provided, and the push rod 25 is set to have a size that is always projected outward from the end of the tubular body 15 via the rod insertion hole 27.

On the other hand, as shown in FIG. 7, the pin 17 in the tubular body 15 has a reduced diameter portion 17 a formed on the plate 5 side, and the pin 17 is formed on the outer periphery of the reduced diameter portion 17 a in the direction of arrow B. A biasing spring 19 is attached. When the pushing rod 25 is pushed in the direction of arrow A against the spring force of the spring 19, the reduced diameter portion 17a is inserted into the pin insertion holes 3 and 11 via the pin insertion hole 23. ing.

Further, a release pin through hole 29 through which the lock release pin 21 penetrates is formed in the peripheral wall of the cylindrical body 15 in the up-down direction, and the drop rod 25 is arrowed against the spring force of the spring 19. When the lock release pin 21 is inserted into the release pin through hole 29 after inserting the reduced diameter portion 17a into the pin insertion holes 3 and 11 by pushing in the direction A, as shown in FIG. The H steel core material 9 is connected to the jig H steel core material 1 by restricting the movement of the pin 17 in the arrow B direction by contacting the end portion 31 of the.

Therefore, as shown in FIG. 8, the jig H steel core material 1 is connected to the upper end portion of the H steel core material 9 and these are built in the soil pillar 33 by a crane. If the H-steel core material 9 is supported until it hardens, the H-steel core material 9 can be installed with high accuracy.

Then, when the soil pillar 33 is hardened to some extent, the wire 35 connected to the lock release pin 21 is pulled from the ground to pull the lock release pin 21 from the release pin through hole 29 as shown in FIG. If it is pulled out, the restoring force of the spring 19 causes the pin 17 to move in the direction of arrow B to release the connection between the jig H steel core material 1 and the H steel core material 9, so that the jig H steel core material 1 Can be lifted to the ground with a crane.

[0012]

[Problems to be solved by the device]

 However, in the conventional hanging jig as described above, when it is built in the soil column 33, the bentonite mortar penetrates into the cylindrical body 15 through the pin insertion holes 3, 11 and 23. The bentonite mortar interferes with the restoring force of the spring 19 so that the H steel core material 1 for jigs and the H steel core material 9 are not disconnected smoothly, and the bentonite mortar that has penetrated into the tubular body 15 There was a drawback that the removal work of was troublesome.

The present invention has been devised in view of the above circumstances, and has a simple structure and is capable of smoothly releasing the connection between the H steel core material for jigs and the building core material. The purpose is to provide an embedding jig.

[0014]

[Means for Solving the Problems]

 In order to achieve such an object, the jig for suspending a core material according to the present invention is suspended from the ground by a crane or the like, and pin insertion holes are coaxially formed on both sides of the lower end portion of the web. The H-core core material for jigs to which two plates are attached, and the support shaft erected between the flanges of the H-steel core material for jigs are rotatably attached, and the operation wire extending from the ground is connected Member and rotatably attached to the rotating member, inserted into the pin insertion holes of both plates, and a retaining bar insertion portion is formed at the tip of the insertion side, and rotation by pulling operation wire is performed. The fixed pin that is pulled out from the pin insertion hole in conjunction with the rotation of the member and the fixed pin that is extended from the ground and inserted into the pin insertion hole when building the core material are positioned to prevent the fixed pin from coming off. It consists of a retaining bar.

[0015]

[Action]

 In order to use the hoisting jig according to the present invention to ensure the installation accuracy of the core material for installation, first insert the core material between both plates, and then insert the pins provided on the plates. When the fixing pin is inserted into the hole and the fixing pin is positioned by the retaining bar, the core material is connected to the H steel core material for jigs.

Then, if these are built in the soil pillar with a crane or the like and the core material is supported until the soil pillar is hardened to some extent, the accuracy of the core material installation can be secured. When the soil pillar has hardened to some extent, the retaining bar is operated from the ground to release the positioning of the fixing pin, and then the operation wire is pulled from the ground, and the rotating member moves in one direction around the support shaft. Then, the fixed pin inserted in the pin insertion hole is pulled out.

By pulling out the fixing pin in this way, the connection between the core material and the H steel core material for jigs is released, and finally the H steel core material for jigs is pulled up to the ground by a crane or the like. Good.

[0018]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The same parts as those in the conventional example shown in FIG.

FIG. 1 is a sectional view of a main part of a hoisting jig according to the present invention. In FIG. 1, 37 is a jig H steel core material, and FIG. 6 shows the jig H steel core material 37. Similar to the H steel core material 1 for jig shown, it is suspended from the ground by a crane, and at its lower end, plates 43 and 45 having pin insertion holes 39 and 41 coaxially formed are formed on the web 37a. It is attached to each side. Then, as shown in FIG. 2, when the web 9a of the H steel core material 9 is inserted between the plates 43 and 45, the pin insertion holes 39 and 41 and the pin insertion hole 11 of the H steel core material 9 are coaxial. It is located in.

Reference numeral 47 is a rotary member that is rotatably attached to a support shaft 49 that is installed between the flanges 37b of the H steel core material 37 for jigs as shown in FIG. The rotary operation part 47a is formed in a substantially V shape, and the arm part 47b extends downward from the rotary operation part 47a. The rotary operation part 47a is, as shown in FIGS. The slit 51 formed in the web 37a is inserted, and the end portion on the insertion side is pivotally attached to the support shaft 49. An operation wire 53 extending from the ground is connected to the end of the rotation operation portion 47a, and the rotation operation portion 47a is supported by pulling the operation wire 53 upward as shown in FIG. It is adapted to rotate in the direction of arrow C about the shaft 49.

On the other hand, as shown in FIG. 1, a fixing pin 55 that can be inserted into the pin insertion holes 39 and 41 is attached to the tip of the arm portion 47b so as to be rotatable in the arrow direction, as shown in FIG. When the rotating operation portion 47a is rotated in the arrow C direction by the pulling operation of the operation wire 53, the arm portion 47b is moved in the arrow D direction, and the fixing pin 55 inserted into the pin insertion holes 39 and 41 is released. It is designed to be pulled out from the pin insertion holes 39, 41 in conjunction with.

Further, in the figure, reference numeral 57 denotes a retaining reinforcing bar extended from the ground. The retaining reinforcing bar 57 is such that the fixing pin 55 is pulled out from the pin insertion holes 39, 11, 41 when the H steel core 9 is installed. As shown in FIG. 3, the U-shaped guide member 59 attached to one side surface of the rotation operation portion 47a is inserted to extend downward as shown in FIG. The fixing pin 55 inserted into the pin insertion holes 39, 11, 41 is inserted into the reinforcing bar insertion hole 61 formed at the insertion side end portion. Further, a reinforcing bar retaining member 63 is attached to the tip side of the retaining bar 57, and when the retaining bar 57 is pulled up, the retaining bar 63 comes into contact with the guide member 59 to prevent the retaining bar 57. Does not come off from the rotating member 47. As shown in FIG. 2, the reinforcing bar retaining member 63 is attached to a position that does not cause any trouble when the retaining bar 57 is pulled out from the reinforcing rod insertion hole 61 of the fixing pin 55.

Since the hanging jig according to the present embodiment is configured as described above, in order to use the hanging jig in order to secure the installation accuracy of the H steel core material 9, first, As shown in FIG. 2, the web 9a of the H-steel core material 9 is inserted between the plates 43 and 45, and the fixing pin 55 is inserted into the pin insertion holes 39, 11, and 41 to insert the end portions of the insertion side. When the retaining bar 57 is inserted through the reinforcing bar insertion hole 61, the H steel core material 9 is connected to the jig H steel core material 37.

Then, these are built in the soil column 33 with a crane as shown in FIG. 5, and if the H steel core material 9 is supported until the soil column 33 is hardened to some extent, the H steel core material 9 Construction accuracy can be secured.

Then, when the soil pillar 33 has hardened to some extent, as shown in FIG. 5, the retaining bar 57 is pulled from the ground and pulled out from the reinforcing bar insertion hole 61 of the fixing pin 55, and then the operation wire 53 is grounded. When pulled, the rotating operation part 47a rotates about the support shaft 49 in the direction of arrow C, and the arm part 47b moves in the direction of arrow D, so that the fixing pin inserted into the pin insertion hole 39, 11, 41. 55 will be pulled out.

By pulling out the fixing pin 55 in this way, the connection between the H steel core material 9 and the jig H steel core material 37 is released, and finally, the jig H steel core material 37 is placed on the ground. Just pull it up with the crane.

Therefore, according to the present embodiment as well, it is possible to secure the installation accuracy of the H steel core material 9 during the installation operation. Further, as described above, in the conventional hanging jig shown in FIG. 6, bentonite mortar is inserted into the cylindrical body through the pin insertion holes 3, 11, 23 by building the H 2 steel core material 9 in the soil column 33. Since the bentonite mortar interferes with the restoring force of the spring 19 because it penetrates into the inside 15, the connection between the H steel core material 1 for jigs and the H steel core material 9 cannot be released smoothly. However, according to the present embodiment, since the fixing pin 55 is reliably pulled out from the pin insertion holes 39, 11, 41 by the operation of the operation wire 53 from the ground, the H steel core materials 37 and H for jigs are provided. The connection with the steel core material 9 can be smoothly and reliably released.

Of course, according to the hanging jig of this embodiment, it is easier to remove the bentonite mortar adhering to the hanging jig shown in FIG. 6 and the maintainability is good. It also has the advantage.

[0029]

[Effect of device]

 As described above, according to the present invention, the connection between the H steel core material for jigs and the building core material can be released more smoothly and more reliably than before, and the attached bentonite mortar etc. Has the advantage that it can be easily removed and maintenance is good.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a hanging jig according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state where H steel core materials are connected by the hanging jig shown in FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a rear view of the hanging jig shown in FIG.

FIG. 5 is a cross-sectional view showing a state in which an H steel core material is built in a soil column by using the hanging jig according to the embodiment of the present invention.

FIG. 6 is a perspective view of a main part of a conventional hanging jig.

FIG. 7 is a cross-sectional view of the hanging jig shown in FIG.

8 is a cross-sectional view showing a state where an H steel core material is built in a soil column by using the hanging jig shown in FIG.

FIG. 9 is a cross-sectional view showing a state in which the H steel core material and the conventional hanging jig are disconnected.

[Explanation of symbols]

 9 H steel core material 11, 39, 41 pin insertion hole 37 H steel core material for jig 37a Web 37b Flange 43, 45 plate 47 Rotating member 49 Support shaft 53 Operation wire 55 Fixing pin 57 Retaining reinforcing bar 61 Rebar insertion hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasunori Hanada 8-21-1, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Creator Yoshitaka Tsunemi 8-chome, Ginza, Chuo-ku, Tokyo No. 21-1 Takenaka Corporation Tokyo Main Store (72) Inventor Isao Yanagisawa 8-21-1, Ginza Chuo-ku, Tokyo Incorporated Takenaka Corporation Tokyo Main Store (72) Inventor Shin Takashimizu Tokyo 8-21-1, Ginza, Chuo-ku, Stockholder, Takenaka Corporation Tokyo Main Store (72) Inventor Chiaki Kikuji 2-7-8, Izumi, Suginami-ku, Tokyo Within RSS Japan Leader

Claims (1)

[Scope of utility model registration request] 1. A pin insertion hole is coaxially formed on both surfaces of a lower end portion of a web, which is suspended from the ground by a crane or the like.
A jig H steel core member to which a single plate is attached, and a rotating member rotatably attached to a support shaft installed between the flanges of the jig H steel core member and connected with an operation wire extending from the ground. , Rotatably attached to the rotating member, inserted into the pin insertion holes of both plates, and a retaining bar insertion portion is formed at the tip of the insertion side to rotate the rotating member by pulling the operation wire. A fixed pin that is pulled out from the pin insertion hole in conjunction with, and a retaining bar that extends from the ground and positions the fixed pin inserted into the pin insertion hole when building the core material to prevent the fixed pin from coming off, A jig for suspending a core material, which is made of