JPH08416U - Yatco connecting device for building H-shaped steel piles - Google Patents

Abstract

(57) [Summary] [Purpose] The upper part of the H-shaped steel pile built in the drilled hole can be easily removed, enabling repeated use. [Structure] A pair of steel sheath plates 2, 2'and 3, 3'protrude in parallel at the lower end of the H-shaped steel Yatco 1 along the flange and the front and back of the web. The web sheathing plates 3 and 3'on the front and back sides provided in parallel with each other are provided with through holes 4 and 4 ', which communicate with each other.
A holding frame 7 slidably holding a connecting pin 6 which can be inserted into the through holes 4 and 4'on the outer surface of the and has a inserting hole 5 at the tip portion which is perpendicular to the axial direction is attached to the connecting pin 6 A return spring 9 for imparting elasticity to the end of the connecting pin 6 so as to position the tip of the connecting pin 6 near the through hole 4 of the web sheathing plate 3 is attached, and the outer surface of the other web sheathing plate is fitted along the return spring 9. The wire 10 is hung from the upper end of the wire 1 to the vicinity of the through hole 4 ′, and the lower end of the wire 10 is connected with a locking pin 11 that can be inserted into the insertion hole 5 of the connecting pin 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a Yatco connecting device for building an H-shaped steel pile, which is a core material, in a hole in an auger hole press-fitting method.

[0002]

[Prior art]

 Generally, an H-shaped steel pile as a core material is built into a hole by an auger hole press-fitting method to form a retaining wall, and in the method of excavating the ground, not only the inside of the retaining wall but also the upper part outside the retaining wall is excavated. There are cases.

In such a case, in the conventional case, since the H-shaped steel piles which are integrally formed are used as the core material, the upper portion of the H-shaped steel piles, which are unnecessary when excavating the outer upper portion of the retaining wall, are cut and removed, The current situation is that they are disposed of as scraps.

[0004]

[Problems to be solved by the device]

 The conventional method of cutting and removing the upper part of the pile has a problem that the cutting work requires a great deal of labor and time, and the H-section steel removed by cutting is wasted.

[0005]

[Means for Solving the Problems]

 In this invention, a pair of front and back steel sheath plates 2, 2'and 3, 3'protrude in parallel at the lower end of the H-shaped steel Yatco 1 along the flange and the front and back surfaces of the web, respectively. Through holes 4 and 4'that communicate with each other are provided in front and back web sheath plates 3 and 3'protruding in parallel along the front and back faces, and the through holes 4 and 4'can be inserted into the outer surface of one web sheath plate 3. Attach a holding frame 7 that slidably holds a connecting pin 6 having an insertion hole 5 perpendicular to the axial direction at the tip, and apply elastic force to the connecting pin 6 in the rear end direction to connect this. A return spring 9 for mounting the tip of the pin 6 in the vicinity of the through hole 4 of the web sheath plate 3 is attached, and the outer surface of the other web sheath plate is extended from the upper end of the Yatco 1 to the vicinity of the through hole 4 '. Down the wire 10 and insert it into the insertion hole 5 of the connecting pin 6 at the lower end of this wire 10. By connecting the locking pin 11 capable proposes a coupling device H-shaped steel pile construction for inclusive tongs made.

[0006]

[Action]

 The upper end of the H-shaped steel pile 12 is inserted between the flange sheath plates 2 and 2'and the web sheath plates 3 and 3'of the Yatco 1 to join the Yatco 1 and the H-shaped steel pile 12 in series, and in this joined state The connecting pin 6 is inserted into the through holes 4 and 4'of the web sheathing plates 3 and 3'and the through hole 13 which has been opened in the web portion of the H-shaped steel pile 12 facing the through holes 4 and 4 ', and the one through hole 4 'When the locking pin 11 is inserted into the insertion hole 5 at the tip of the connecting pin 6, the return of the connecting pin 6 is stopped and the Yatco 1 and the H-shaped steel pile 12 are connected and integrated via the connecting pin 6. Be converted.

When the H-shaped steel pile 12 is built in the drilled hole together with the Yatco 1 to form the earth retaining wall, the inside of the earth retaining wall is excavated, and when the outer upper portion thereof is excavated, the wire 10 is attached to the ground portion. When the locking pin 11 is pulled out and pulled out from the connecting pin 6, the connecting pin 6 is automatically retracted by the return spring 9 and comes out from the through hole 13 of the H-shaped steel pile 12, and the Yatco 1 and the H-shaped steel pile 12 are connected. After that, only the Yatco 1 can be pulled up, and the collected Yatco 1 can be repeatedly used.

[0008]

【Example】

 As shown in FIGS. 1 to 3, at the lower end of the Y-shaped steel 1 made of H-shaped steel, along the front and back surfaces of the flange and the web, a pair of front and back steel flange sheath plates 2, 2'and a web sheath plate 3, 3'is projected in parallel.

The web sheath plates 3 and 3 ′ are provided with through holes 4 and 4 ′ which are in communication with each other in an intermediate portion in the up-and-down direction, and the outer surface of the one web sheath plate 3 around the through hole 4 is provided. A holding frame 7 is attached to the through hole 4, 4 ', which has a connecting pin 6 slidably held at the rear end thereof, the connecting pin 6 having an insertion hole 5 at the front end which is perpendicular to the axial direction.

A seat plate 8 is provided at an intermediate portion of the connecting pin 6, and a return spring 9 is mounted between the seat plate 8 and the outer surface of one of the web sheath plates 3, and the elastic force of the spring causes the connecting pin 8 to move. 6 is normally retracted toward the rear end and is located near the through hole 4 at the front end to open a gap between the web sheath plates 3 and 3 '.

On the outer surface of the web sheath plate 3 ′, a wire 10 is hung along the outer surface of the web sheath plate 3 ′ from the upper end of the Yatco 1 to the vicinity of the through hole 4 ′, and the lower end of the wire 10 is inserted into the insertion hole 5 of the connecting pin 6. A lock pin 11 that can be inserted is connected.

In the above construction, when constructing the H-section steel pile 12, the upper end of the H-section steel pile 12 is placed between the flange sheath plates 2, 2 ′ and the web sheath plates 3, 3 ′ of the Yatco 1. Penetrate and join the Yatco 1 and the H-shaped steel pile 12 in series.

In this joined state, the connecting pin 6 is inserted into the through holes 4 and 4 ′ of the web sheath plates 3 and 3 ′ and the through hole 13 which is opened in the web portion of the H-shaped steel pile 12 facing the through holes 4 and 4 ′. When the locking pin 11 is inserted into the insertion hole 5 at the tip of the connecting pin 6 protruding from the one through hole 4 ', the return of the connecting pin 6 is stopped and the Yatco 1 and the H-shaped steel pile 12 are connected to the connecting pin 6 It is connected and integrated via.

Next, the H-shaped steel pile 12 is built in the drilled hole together with the Yatco 1 to form a retaining wall, and after excavating the inside of the retaining wall as shown in FIG. 4, the outer upper part thereof is excavated. At this time, when the wire 10 is pulled on the ground portion and the locking pin 11 is pulled out from the connecting pin 6, the returning spring 9 automatically retracts the connecting pin 6 and pulls it out of the through hole 13 of the H-shaped steel pile 12. Since the connection between the Yatco 1 and the H-shaped steel pile 12 is released, only the Yatco 1 can be pulled up, and the collected Yatco 1 can be repeatedly used.

[0015]

[Effect of device]

 As described above, according to the present invention, the upper end portion of the H-shaped steel pile can be inserted between the flange sheath plate and the web sheath plate of the Yatco to stably join the Yatco and the H-shaped steel pile in series.

Then, in this joined state, the connecting pin is inserted into the through hole of the web sheath plate and the through hole which is opened in the web portion of the H-shaped steel pile facing the through hole and protrudes from one of the through holes. By inserting the locking pin into the insertion hole at the tip of the connecting pin, the Yatco and the H-shaped steel pile can be connected and integrated via the connecting pin.

In addition, an H-shaped steel pile is built in the drilled hole together with the yatco to form a retaining wall, and after excavating the inside of this retaining wall, when excavating the outer upper part of the retaining wall, pull the wire above the ground. By pulling out the locking pin from the connecting pin, the connecting pin automatically retracts by the return spring and comes out from the through hole of the H-shaped steel pile, and the connection between Yatco and H-shaped steel pile is released, and only Yatco It is possible to pull up, and the work of removing the upper part of the retaining wall can be simplified, and the collected Yatco can be reused, eliminating the waste of discarding the cut H-section steel as in the past.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a connected state of a Yatco and an H-shaped steel pile by the connecting device of the present invention.

FIG. 2 is a semi-cut perspective view of a Yatco and an H-shaped steel pile to be connected according to the present invention.

FIG. 3 is a vertical plan view of a yatco according to the present invention.

FIG. 4 is a vertical sectional side view showing a built-in state of the YATCO and the H-shaped steel pile according to the present invention.

[Explanation of symbols]

 1 Yatco 2 Flange sheath plate 2'Flange sheath plate 3 Web sheath plate 3'Web sheath plate 4 Through hole 4'Through hole 5 Insert hole 6 Connecting pin 7 Holding frame 8 Seat plate 9 Return spring 10 Wire 11 Locking pin 12 H Shaped steel pile 13 through hole

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[Procedure amendment]

[Submission date] August 8, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Added

[Correction content]

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a connected state of a Yatco and an H-shaped steel pile by the connecting device of the present invention.

FIG. 2 is a front view of a yatco according to the present invention.

FIG. 3 is a semi-cut perspective view of a Yatco and an H-shaped steel pile connected according to the present invention.

FIG. 4 is a vertical plan view of a yatco according to the present invention.

FIG. 5 is a vertical cross-sectional side view showing a built-in state of the YATCO and the H-shaped steel pile according to the present invention.

[Explanation of symbols] 1 Yatco 2 Flange sheath plate 2'Flange sheath plate 3 Web sheath plate 3'Web sheath plate 4 Through hole 4'Through hole 5 Insert hole 6 Connecting pin 7 Holding frame 8 Seat plate 9 Return spring 10 Wire 11 Locking pin 12 H-shaped steel pile 13 Through hole

Claims (1)

[Scope of utility model registration request] 1. A pair of steel sheath plates, front and back, projecting parallel to each other along the flange and the front and back of the web at the lower end of the H-shaped steel shell, and projecting parallel to the front and back of the web. The front and back web sheath plates are provided with through holes that communicate with each other, and the through holes can be inserted into the outer surface of the one web sheath plate, and the connecting pin with the insertion hole that is perpendicular to the axial direction at the tip can be slid A holding frame attached to the connecting pin, and a connecting spring is attached to the connecting pin so that the tip end of the connecting pin is positioned near the through hole of the one web sheath plate. On the outer surface of the other web sheath plate, a wire is hung along the outer surface from the upper end of the Yatco to the vicinity of the through hole, and the lower end of the wire is connected with a locking pin that can be inserted into the insertion hole of the connecting pin. H type characterized by Yatco connection device for building steel piles.