JP2881372B2 - Earth retaining device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trench retaining device for excavating a main pipe such as city gas or water supply and sewerage in the ground, and more particularly to a spindle main body as a slit in a groove width direction. The present invention relates to an improvement of a spindle which ensures a large passage width for descending a main pipe when rotated.

[0002]

2. Description of the Related Art Conventionally, as a soil retaining device for a trench excavated for burying a main pipe of city gas, water and sewage, etc. in the ground,
A guide rule disciplined at required intervals along both sides of the excavation groove, a retaining panel slidably fitted between the guide rails for retaining the excavation groove, and a cut connecting the guide rules opposing in the groove width direction An earth retaining device including a spindle as a tension, and an earth retaining device including a retaining panel and a spindle as a cutout attached to both left and right ends of the earth panel are well known (for example, as prior art documents, for example,
For example, there is Japanese Utility Model Laid-Open No. 3-32643.

[0003] The spindle in the above-mentioned earthing device usually has three to four vertical directions with respect to the guide rail or the earthing panel.
Four are provided, provided at short intervals also in the length direction of the groove,
It is effective for retaining soil panels.

However, it is extremely inconvenient to lay a buried pipe, especially a pipe having a relatively large diameter such as a main pipe of city gas or water supply and sewage and having a length of 10 to several tens of meters.

In order to solve this problem,
The spindle is hinged to at least one of the opposing guide rails so as to be rotatable in the horizontal direction, and with the movement of the tube to be lowered to the embedding setting position, the spindle which sequentially obstructs passage is horizontally rotated. To secure the passage for the pipe to descend,
There is a retaining device that immediately returns to its original state after the pipe has passed and is in an erected state (Japanese Patent Publication No. 56-51086 is a prior art document).

In this earth retaining device, as shown in FIG. 10, the guide rails 50 are lip grooved steel members 51, 51 opening back to back in the longitudinal direction of the excavation groove A, and open toward the inside of the excavation groove A. And a lip channel 52.
The lip channel 52 is a panel 5 fixed by rollers 53 so as to be slidable up and down between opposing lip channels 51 of the guide rail 50 adjacent to the excavation groove A in the longitudinal direction.
4 protrudes into the excavation groove A. In the lip channel steel 52, a pivotal connecting portion 57 on the proximal end side of the spindle body 56 and a locking portion 58 on the distal end side of the spindle 55 as a tension member are fitted respectively, and a sewer pipe or the like is provided. When the pipe is laid, the pin 59 and the auxiliary pin 60 are withdrawn from the locking portion 58 on the distal end side of the spindle 55, the locking member 61 and the connecting tool 62 are separated, the spindle body 56 is reduced, and the After the pin 63 is removed from the pivot portion 57 on the base end side, the spindle main body 56 is rotated 90 degrees in the horizontal direction about the pin 64 as shown by a chain line. Accordingly, the locking member 61 protrudes inward of the excavation groove A from one of the lip grooved steel members 52, and the digging groove A from the other lipted groove steel member 3.
Pivotally protrudes inwardly of the body.

In the excavation groove A between the panels 54 and 54 facing each other, the lip channel 52 and the locking member 61 project from one side, and the lip channel 52 and the pivoting member 65 project from the other side. Then, a passage for lowering a pipe such as a sewer pipe to the filling setting position is narrow as shown by a dotted line, and the work of laying the pipe becomes troublesome.
Especially when the groove width of the excavation groove A becomes less than 1 meter,
The path for lowering the pipe is about 70 cm at maximum, and the outer diameter is 6 cm.
When lowering the 0 cm tube, the locking member 61 and the pivoting member 65
And lowering the pipe so as not to damage it requires various aids and requires a lot of time and personnel to work, which significantly reduces the work efficiency. .

Further, when the spindle body 56 is rotated in the horizontal direction about the pin 64 as shown by a dashed line, it is difficult to support the weight of the spindle body 56 with the pivot member 65 and the pin 64. As shown in FIG. 11, a bracket 66 for holding the spindle body 56 is attached to the lip channel 52 to prevent it from leaning, so that the structure of the retaining device is complicated. Is to narrow the passage when lowering the pipe.

[0009]

SUMMARY OF THE INVENTION Accordingly, the present invention is to improve the structure of both ends of the spindle so that when the spindle body is rotated in the horizontal direction, a large passage width in the excavation yard where the pipe descends can be secured. It is another object of the present invention to provide a retaining device which can prevent the spindle body from leaning downward without being held by a bracket when the spindle body is horizontally rotated.

[0010]

According to the present invention, there is provided an earth retaining device for solving the above-mentioned problems, comprising a guide rail erected at a required interval along both sides of a digging groove, and a guide rail adjacent to both sides of the digging groove. Device comprising a retaining panel slidably fitted in a pier and a spindle as a slit connecting the guide rails facing each other in the groove width direction, or standing up continuously along both sides of the excavation groove. In a soil retaining device comprising a retaining panel and a spindle as a tension connecting the retaining panels facing each other in the groove width direction, the spindle includes a spindle body composed of a hydraulic or hydraulic cylinder capable of expanding and contracting, A base connector connected to one end of the spindle main body and having pivot portions on both left and right sides, and a pivot portion connected to the left and right pivot portions of the proximal end connector with pins on both left and right sides of the cylinder portion; A proximal end spindle receiver which is fitted with a locking member for retaining the guide rail or retaining panel from the outside from the outside and fixed by wedges, and a distal end connection which is connected to the other end of the spindle body and has vertical pin holes on both left and right sides. Utensils,
A locking member which has a cylindrical portion inside which is locked by a pin inserted into a pin hole of the tip connector and which locks the guide rail or the retaining panel from the outside is fitted into the cylindrical portion and fixed by a wedge. And a tip spindle receiver.

In the spindle, the distal end connecting member and the distal end spindle receiver may be integrated.

[0012]

The earth retaining device of the present invention configured as described above has the following features.
A wedge-fastened and fixed wedge to the spindle receiver at the base end of the spindle is installed in opposing guide rules standing upright along both sides of the excavation groove or vertically elongated holes formed at required levels in the vertical direction at both left and right ends of the retaining panel. The locking member to be fixed with a wedge is inserted into the locking member and the tip spindle holder, rotated by 90 degrees and stopped, and the wedge is driven further deeply, and the locking member is tightened to the inner surface of the guide rail or the retaining panel, respectively, and closely attached Let it. Next, the left and right pivots of the proximal connector coupled to one end of the spindle body are attached to the left and right pivots of the proximal spindle receiver.
The pin-bound, also on the inside of the cylindrical portion of the tip spindle female component, covered with a distal end connecting portion that is coupled to the other end of the spindle body, to the left and right outer sides of the cylindrical portion by inserting the pin from the pin hole of the left and right sides Lock. Thereafter, the hydraulic or hydraulic cylinder, which is the spindle body, is actuated and extended to hold the guide rule or the retaining panel at a predetermined groove width.

When laying a pipe such as a sewer pipe, the cylinder is actuated to loosen the spindle main body, and a pin is inserted from a pivotal support on one of the right and left sides of the proximal connector connected to one end of the spindle main body. To release the connection with the pivotal support on either the left or right side of the proximal spindle receiver. Next, the pins inserted into the pin holes on the left and right sides of the distal end connecting member connected to the other end of the spindle main body are pulled out, and the distal end connecting portion is released from the cylindrical portion of the distal end spindle receiver. Thereafter, the spindle main body is horizontally moved around a pin connecting the left or right pivot of the proximal connector of the spindle main body and the left or right pivot of the proximal spindle receiver. 90 degrees in the direction to form a passage for the tube to descend.

A passage for lowering the pipe thus formed is provided in the excavation groove between the opposing retaining panels, a proximal end spindle receiver from one side and a proximal end connector of the spindle main body horizontally rotated 90 degrees, Although the distal spindle receiver protrudes from the other, the proximal spindle receiver and the distal spindle receiver are tightly fastened to the guide rail or the retaining panel,
The amount of protrusion is very small, and the proximal coupling of the spindle body is also narrow and has a small amount of protrusion, which is significantly wider than the pipe lowering passages in conventional earth retaining devices. In addition, when the spindle body is horizontally rotated, the spindle body is rotated about a pin that connects the left or right pivotal support of the proximal spindle support and the left or right pivotal support of the proximal connector. Therefore, that is, since the rotation support portion is long in the vertical direction, the weight of the spindle main body can be sufficiently supported, and it is possible to prevent the spindle body from leaning down without being held by the bracket as in the related art.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the earth retaining device of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a guide rail erected at required intervals along both sides of the excavation groove A, and 2 denotes a retaining panel slidably fitted between adjacent guide rails 1 and 1 on both sides of the excavation groove A. is there. That is, the guide rail 1 is formed with lip groove-shaped guide grooves 1a at both ends in the longitudinal direction of the excavation groove A, and the side edges of the retaining panel 2 are slidably fitted in these guide grooves 1a. Reference numeral 3 denotes a spindle as a tension connecting the guide rails 1 and 1 facing each other in the groove width direction of the excavation groove A.

As shown in FIG. 2, the spindle 3 is a spindle body 4 composed of a hydraulic cylinder which can be extended and retracted.
3, a cylindrical portion 6 is connected to one end of the spindle body 4 by a pin 5, and a proximal end having a pivotal support portion 8 as shown in FIG. Connector 9
And a pivot portion 11 coupled to the pivot portions 8 on both left and right sides of the base end connector 9 by pins 10 with the cylindrical portion 1 on the inner surface of the plate 12.
3, a base spindle receiver 16 having a locking member 15 which is provided on both left and right outer sides of the plate 12, is inserted into the cylindrical portion 13 from the outer surface side of the plate 12, and is stopped by the wedge 14 from above, and a spindle body as shown in FIG. A cylindrical portion 18 is connected to the other end of the cylindrical member 4 by a pin 17, and pin holes 21 are formed on the left and right sides of upper and lower edge plates 20 in a plate 19 at the outer end of the cylindrical portion 18, and a slit 22 is formed in the middle. A distal end connecting member 23 having a cylindrical portion 25 inside the plate 26, the left and right sides of which are locked by pins 24 inserted into the pin holes 21 of the distal end connecting member 23.
A distal end spindle receiving member 30 having a flange 27 at the distal end thereof and having a locking member 29 which is inserted into the cylindrical portion 25 from the outer surface side of the plate 26 and is stopped from above by a wedge 28. On the outer surfaces of the plate 12 of the tool 16 and the plate 26 of the tip spindle receiver 30, cushion members 31 are attached around four sides of the locking members 15, 29, respectively. Plates 32 are provided, each of which protrudes outwardly so as to be alternately inclined in the groove width direction.

As shown in FIG. 1, the earth retaining device of the embodiment constructed as described above has a vertically long hole drilled at a required level of the opposing guide rails 1, 1 standing along both sides of the excavation groove A. In the hole 1b, the spindle 1 shown in FIGS.
The T-shaped hooks 15a, 29a of the locking member 15 of the proximal spindle receiving member 16 and the locking member 29 of the distal spindle receiving member 30 are rotated by 90 degrees to prevent them from coming off, and then, as shown in FIG. 14 and 28 are further driven into the locking member 1 respectively.
5 and 29 are tightly fitted to the inner surfaces of the guide rails 1 and 1. Next, as shown in FIG. 2, the right and left pivots 8 of the proximal connector 9 connected to one end of the spindle body 4 with the pins 5 are connected to the pivots 11 on the left and right sides of the proximal spindle holder 16 as shown in FIG. 10, and a pin 17 is attached to the other end of the spindle body 4 to the cylindrical portion 25 inside the tip spindle receiver 30.
And the pins 24 are inserted into the pin holes 21 on both left and right sides thereof to be locked on the left and right outer sides of the cylindrical portion 25. Thereafter, the hydraulic cylinder of the spindle body 4 is operated to extend, and as shown in FIG. 1, the guide rails 1, 1 and thus the retaining panels 2, 2 are held at a predetermined groove width.

When laying a pipe such as a sewer pipe, a hydraulic cylinder is actuated to loosen the spindle main body 4, and the base end connector 9 connected to one end of the spindle main body 4 by a pin 5 is connected. The pin 10 is pulled out from one of the left and right sides, in the example of FIG. 5, the left pivot portion 8, and the connection with the left pivot portion 11 of the proximal spindle receiver 16 is released. Next, the pins 24 inserted into the pin holes 21 on the left and right sides of the distal end connecting member 23 connected to the other end of the spindle main body 4 with the pins 17 are removed, and the cylindrical portion 25 of the distal end spindle receiver 30 (FIG. (See FIG. 3). 5 and 6, focusing on the pin 10 connecting the right-hand pivot 8 of the proximal connector 9 of the spindle body 4 and the right pivot 11 of the proximal spindle receiver 16. As shown, the spindle body 4 is turned 90 degrees in the horizontal direction to form a passage for lowering the pipe.

The passage for lowering the pipe formed in this way is provided in the excavation groove A between the opposed retaining panels 2 and 2 by the spindle main body 4 horizontally rotated 90 degrees with the base spindle receiver 16 from one side. Although the proximal end connector 9 and the distal end spindle receiver 30 project from the other end, the proximal end spindle receiver 1
6 and the tip spindle holder 30 are tightly tightened on the inner surfaces of the guide rails 1 and 1 and only the cylindrical portions 13 and 25 project, and the amount of projection is very small. Because of their small width and small protrusion, they are significantly wider than the pipe lowering paths of conventional earth retaining devices. When actually comparing the case where the groove width of the excavation groove A is 1 m, the passage for lowering the pipe is about 70 cm at maximum in the conventional earthing device, but in the earthing device of the present embodiment, the pipe is lowered. Is about 85 cm. Therefore, when lowering a pipe having an outer diameter of 60 cm, the pipe can be smoothly lowered with a sufficient margin without causing the pipe to collide with the base end connector 9 or the tip spindle receiver 30, thereby improving work efficiency.

Further, when the spindle body 4 is rotated horizontally, the spindle body 4 is rotated about the pin 10 connecting the pivot 11 of the proximal spindle holder 16 and the pivot 8 of the proximal connector 9, that is, Since the rotation support portion is long in the vertical direction, the weight of the spindle main body 4 can be sufficiently supported, and it is possible to prevent the spindle body 4 from sagging downward without being held by a bracket as in the related art.

In the above embodiment, the spindle body 4 is a hydraulic cylinder, but in the case of a hydraulic cylinder, a pressure water introduction section 35 provided at one end of the spindle body 4 is provided as shown in FIG. A frame 36 surrounding the pressure water introduction portion 35, and pin holes 39, 40 for inserting pins 37, 38 for restraining the pressure water introduction portion 35 from above and below, and a pin hole 42 for inserting a positioning pin 41 on both side surfaces thereof. And a proximal connector 9 ′ having pivot portions 8 on both left and right sides of the outer surface, and a flange 4 at the other end of the spindle body 4 as shown in FIG.
3 should be provided. The flange 43 is provided on the plate 4 integrated with the end face of the cylindrical portion 25 of the tip spindle receiver 30.
A pin 47 is inserted into a pin hole 46 formed on each of the left and right sides of the upper and lower edge plates 45 of the spindle body 4 to prevent the spindle body 4 from coming off.
Should be locked at the other end. In this case, the spindle body 4
When a pipe such as a sewer pipe is laid horizontally by 90 degrees, the pin 10 is removed from the pivot 8 on one side of the proximal connector 9 ′, and the pivot 11 of the proximal spindle receiver 16 is removed. Then, the pin 47 holding the other end of the spindle main body 4 is pulled out from the pin hole 46 to release the other end of the spindle main body 43, and then the spindle main body 4 is connected to the pin 1 on the other side.
Rotate 90 degrees horizontally around 0 to form a path to lower the tube.

In this modification, when the flange 43 is not provided at the other end of the spindle main body 4, a pin hole 48 is provided at the other end of the spindle main body 4 as shown in FIG. A pin hole 49 is provided at the center of the spindle body, a pin 50 is inserted into the pin holes 48, 49, and connected to the plate 44 integrated with the tip spindle receiver 30, and a pin 47 is inserted into the left and right pin holes 46, and the other end of the spindle body is inserted. Lock. In this case, the spindle body 4 may be either a hydraulic cylinder or a hydraulic cylinder.

[0023]

As described above, according to the earth retaining device of the present invention,
When the spindle body is turned horizontally by 90 degrees to form a passage for lowering a pipe laid at the bottom of the excavation groove, excavation of a member in which the spindle body is connected to opposing guide rails or both ends of the retaining panel. Since the amount of protrusion into the groove is very small, it is significantly larger than the passage for lowering the pipe in the conventional earth retaining device. Therefore, when the pipe is lowered, the pipe can be smoothly lowered with sufficient margin without colliding the pipe with the coupling member of the spindle main body projecting into the excavation groove, and the efficiency of laying the pipe is improved. In addition, when the spindle body is horizontally rotated, its rotation support portion is long in the vertical direction, so that the weight of the spindle body can be sufficiently supported, and the spindle body can lean down without being held by a bracket as in the conventional case. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a retaining device of the present invention.

FIG. 2 is a perspective view showing an example of a spindle as a tension in the earth retaining device of the present invention.

FIG. 3 is an exploded perspective view of a proximal end side of the spindle of FIG. 2;

FIG. 4 is an exploded perspective view of the distal end side of the spindle of FIG. 2;

FIG. 5 is a perspective view showing a state in which the main body of the spindle of FIG. 2 is horizontally rotated by 90 degrees to form a passage for lowering a pipe.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is an exploded perspective view of a proximal end side of another example of the spindle.

FIG. 8 is an exploded perspective view of a distal end side of another example of the spindle.

FIG. 9 is an exploded perspective view showing a partially modified example of FIG. 8;

FIG. 10 is a plan view showing a main part of a conventional earth retaining device.

FIG. 11 is a front view of the retaining device of FIG. 10 as viewed in a longitudinal direction of the excavation trench.

[Explanation of symbols]

 Reference Signs List A excavation groove 1 guide rail 2 earth retaining panel 3 spindle 4 spindle body 8 pivotal support 9 proximal end connector 10 pin 11 pivotal support 13 cylinder portion 14 wedge 15 locking member 16 proximal end spindle receiver 21 pin hole 23 distal end connector 24 Pin 25 Tube part 28 Wedge 29 Locking member 30 Tip spindle receiver

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Setsuo Machida 6-11-206, Takino, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture (72) Inventor Sachi Australia 4-15 Ooka, Minami-ku, Yokohama-shi, Kanagawa Prefecture (56) References Actual Kaihei 3-32643 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 17/08

Claims (2)

(57) [Claims] 1. A guide rail erected at required intervals along both sides of a digging groove, and a retaining panel slidably fitted between adjacent guide rails on both sides of the digging groove, facing in a groove width direction. A retaining device provided with a spindle as a tension connecting the guide rails, or a retaining device connected between a retaining panel continuously erected along both sides of the excavation groove and the retaining panel facing in the groove width direction. In the earth retaining device provided with a spindle as the above, the spindle is connected to a spindle body composed of a hydraulic or hydraulic cylinder that can be extended and retracted, and a base end connection which is connected to one end of the spindle body and has pivotal support portions on both left and right sides. And a locking portion which is provided on both the left and right sides of the tubular portion with the pivoting portions on the left and right sides of the proximal end connecting device and which is pinned to the guide rail or the retaining panel from outside in the tubular portion. A base end spindle receiver in which a material is inserted and fixed by a wedge, a tip end connection part which is connected to the other end of the spindle main body and has vertical pin holes on both left and right sides, and a pin inserted in the pin hole of the front end connection part And a distal end spindle receiver fixedly fitted with a wedge-fixed locking member which has a cylindrical portion locked inside and has a locking member for retaining the guide rail or the retaining panel from the outside inside the cylindrical portion. Earth retaining equipment. 2. The spindle according to claim 1, wherein the distal end coupler and the distal end spindle receiver are integrated.
A retaining device as described.