JPH0324524B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an earth retaining device, and includes a pair of cross members fixed to a large number of earth retaining sheet piles in contact with a corresponding trench wall;
A vertical member is provided between the horizontal members, and the distance between each of the sheet piles on both sides is expanded through each horizontal member by the operation of an expansion/contraction device, and an engaging pin is inserted into the engaging hole provided in the sheet pile. A cross member is supplied from above the support that is to be engaged and installed, and the side and lower surface of the cross member on the opposite side to the sheet pile are held, and the positioning pin of the retainer that prevents the member from coming off upward is inserted into the support. The structure allows for easy earth retaining work carried out in ditches.

(Prior technology) In order to bury cable pipes, etc. for passing underground telephone cables, sheet piles are driven along the trench walls on both sides of an open trench excavated from the ground to prevent the trench walls from collapsing. It is necessary to spread and hold the sheet piles on both sides until the embedding work is completed, so cross members are fixed to the inner surfaces of each sheet pile on both sides, and vertical members with expansion and contraction devices are installed between the cross members on both sides. hand over,
Conventionally, the work of expanding the sheet piles from both ends of the longitudinal members through the cross members has been performed.

However, attaching the cross members to the inner surface of a large number of sheet piles requires work in a trench, and conventionally the cross members are attached to the sheet piles using wire or bolts, resulting in poor work efficiency.

(Problems to be Solved by the Invention/Objects of the Invention) In view of the above, the earth retaining device of the present invention provides an engagement hole in each of a large number of sheet piles that contact the corresponding trench wall, and makes each engagement hole contact the sheet pile. A retainer that fits and engages an engaging pin provided on the upright part of the support that holds the lower surface and side surface of the horizontal member, and is in contact with the upper surface of the horizontal member that is held by the support surface of the support, the second upright part, and the support. The configuration in which the positioning pins are fitted into the upright parts of the support simplifies the attachment of the cross members to the inner surface of the sheet pile, and furthermore, the longitudinal members, which have a telescoping device and widen the corresponding spacing between the horizontal materials, can be mounted on both sides. It is characterized in that it is passed between the cross members of the pipe, and it can simplify the installation of the cross members to the sheet pile, especially when working in the trench.

(Example) An embodiment of the present invention will be described.

FIG. 1 shows an embodiment in which a rectangular frame 1 is constructed by a pair of horizontal members 2, 2 made of pipe material with a square cross section, and vertical members 3, 3 with expansion and contraction devices 4, 4 provided in the middle. It is something. In this embodiment, the expansion and contraction devices 4, 4 are configured to send sealed oil to one of the cylinders 5 to extend the ram 6, or return the oil feed to contract the ram 6, The cylinder 5 is fixed to one cross member 2 by a connecting tool 7, and the ram 6 is fixed to the other cross member 2 via a connecting tool 8,
The corresponding interval between the horizontal members 2, 2 is expanded by operating the expansion and contraction devices 4, 4, and sheet piles c in contact with the groove walls a, a are attached to the longitudinal ends of each of the horizontal members 2, 2.
A pair of engaging protrusions 9 are provided on the outside of both ends of the group. A retaining board e is inserted between the sheet pile c group and the trench walls a, a.

The cross member 3 provided with the telescoping device 4 may be a supporter for supporting a concrete frame for construction.

The sheet pile c used has engagement holes d formed by a plurality of inverted potholes whose diameters are enlarged at the top, as shown in FIG.

FIG. 4 shows the support 11 of the present invention, which includes a first upright portion 12 that is in close contact with the inner surface of the sheet pile c, and
It is constituted by a bearing surface 13 extending horizontally from the upper end, and a second upright part 14 that stands up at right angles from the extended end of the bearing surface 13 and embraces the cross member 2, and is provided on the first upright part 12. The head 16 of the engagement pin 15 is inserted through the large diameter portion of the inverted pothole of the engagement hole d of the sheet pile c, and the neck portion 17 is dropped into the small diameter portion of the inverted pothole of the engagement hole d. In addition, in the support 11, a shaft 19 that is lower than the engagement pin 15 is attached to the shaft support piece 18 that protrudes from the first upright portion 12 on the lower surface of the support surface 13.
2, and the lower end of the retainer 21 is fixed to a pipe 20 rotatably fitted to the shaft 19. The retainer 21 has a double-folded right angle parallel to the lower surface of the support surface 13 and the side surface of the second upright portion 14 at the upper end of the swinging piece 22 that rises to the lower side of the support surface 13 of the support 11. An extension piece 23 is formed, and at the upper end of the extension piece 23 there is a holding piece 24 in the shape of a “h” corresponding to the upper surface of the cross member 2.
is provided, and a diagonal sliding member 25 in contact with the upper surface of the cross member 2 is fixed to the presser piece 24.

Additionally, a through hole 26 provided in the first upright portion 12 of the support 11 and a support piece 2 hanging down from the support surface 13 are provided.
The engaging pin 15 is inserted into the through hole 28 provided in the upright part of the
The neck 17 of the fourth hole falls into the small diameter part of the engagement hole d.
In the state shown in the figure, a substantially horizontal positioning pin 29 that can be fitted into the large diameter portion of the engagement hole d is loosely fitted,
The pin 29 is passed through the through hole 30 provided in the swing piece 22 of the retainer 21, and the engaging nut 31 is screwed into the pin 29. A protruding force spring 33 is hung on the positioning pin 29 between the washer 32 which is in contact with the first upright portion 12 and the support piece 27.

In the above, the retainer 21 in FIG.
As shown in the figure, it is composed of a tightening part 22a that can be separated from the support 11a, an extension piece 23a, and a holding piece 24.
a, and a positioning pin 2 that fits into the large diameter portion of the engagement hole d of the sheet pile c through the through hole 26a of the first upright portion 12a.
9a may also be provided. Numeral 31a is a nut screwed onto the end of the positioning pin 29a that protrudes from the tightening portion 22a. In this case, positioning pin 2
In order to prevent the loss of the retainer 21a with a chain,
Concatenate the .

In this embodiment, an operation method when using the support 11 shown in FIG. 4 will be explained.

In the groove wall a, at least between the engagement protrusions 9 at both ends of the cross member 2 is applied to the sheet piles c, and the first upright portion 12 of the support 11 is applied to each of the sheet piles c, and the engagement pin 15 is applied.
into the engagement hole d, and lower the neck 17 as shown in the figure. Next, when the cross member 2 is slid onto each support member 11 from above the sliding member 25 of the retainer 21,
The retainer 21 once swings as shown by the chain line in Figure 4, and then
Pass the cross member 2 downward as shown in FIG. The holding piece 24 and the sliding member 25 are projected upward from the side of the cross member 2 to prevent the information from coming off. FIG. 4 shows this state. Subsequently, the vertical members 3 are appropriately expanded by the expansion/contraction device 4, and each engaging protrusion 9 is fitted on both sides of the sheet pile c (at this time, the vertical members 3 are not fully expanded). Therefore, the retaining boards e are stacked between the trench wall a and each sheet pile c, and after that, the vertical members 3 are fully extended by the expansion and contraction device 4, the space between the horizontal members 2 and 2 is widened, and each of the horizontal members 2 is Then push each sheet pile c.

The construction method order described above is an example, and other construction methods may be used freely.

When using the stopper 21a shown in FIG. 7, the positioning pin 29a is pushed into the through hole 26a, etc., but other operations are the same as described above.

(Operations and Effects) As clarified by the above explanation, the present invention is directed to a conventionally known sheet pile c in which an engaging hole d such as an inverted pothole is provided vertically (see, for example, Japanese Patent Publication No. 58-49657). 1 to each sheet pile c on both sides of the groove.
The lower upright portions of the cross members 1 and 11a are connected by an engagement pin, and the side and lower surfaces of the cross members 2 and 2 opposite to the sheet pile c are held by the supporting tools, and the retaining tools 21 and 21a are connected. is attached to the support tools 11, 11a by the positioning pin 29, and the support tools 11, 11a
The support surface 13 of the vertical member 3 is in contact with the upper surface of the second upright portion and the horizontal member 2, and is attached to the sheet pile without using almost any tools, making this work in the groove easy. In the work inside the trench, the expansion device expands the sheet pile e through the horizontal members 2, 2 on both sides, and after approximately completing the burying of the underground pipe in the trench and backfilling the trench, the expansion device 4 expands the sheet pile e. Contraction and removal of the vertical members 3, release of the upper surfaces of the cross members 2, 2 by operating the stopper 21 in the opposite manner to the above, removal of the cross members 2, 2 upward from the support 11, and the sheet pile attachment of the support 11. Since removal from the matching hole d can be carried out in a well-procedure manner, and when using the stopper 21a for the support 11a shown in FIG. Because of the expansion and contraction caused by Include the support 11,1
1a and the retainers 21, 21a, it is easy to use and has the advantage that no skill is required for its operation.

[Brief explanation of drawings]

FIG. 1 is a schematic top view, and FIG. 2 is an enlarged side view of the same part, with a part cut away. Figure 3 is a front view of sheet pile c, Figure 4 is the support 11 and retainer 2.
1. FIG. 5 is a front view of the same, FIG. 6 is a plan view of the same in use, and FIG. 7 is a partially cutaway view of the support 11a and retainer 21a of another embodiment. FIG. 1 → frame body, 2 → horizontal member, 3 → vertical member, 11, 11a
→Supporting device, 12→First upright part, 13→Supporting surface, 1
4→Second upright portion, 15→Engagement pin, 21, 21a
→ Removal stopper, 23 → Extension piece, 24 → Holding piece, 2
9, 29a → Positioning pin.

Claims (1)

[Claims] 1 An engagement hole is provided in each of the large number of sheet piles in contact with the corresponding groove wall, and each engagement hole is provided with a first upright portion, a bearing surface extending horizontally from the upper end of the upright portion, and an extension end of the bearing surface. The engagement pin provided on the first upright part of the support is fitted and locked, and is held by the support surface of the support, the second upright part, and the support. A positioning pin provided on a retainer in contact with the upper surface of the cross member is fitted into a through hole provided in the first upright portion of the support and is locked, and further includes an expansion and contraction device, and the expansion and contraction device allows each of the horizontal members to be An earth retaining device characterized by a vertical member extending the correspondence interval between horizontal members on both sides.