JPH0687433U - Earth retaining device with a spindle - Google Patents

Abstract

(57) [Summary] [Purpose] To enable horizontal rotation of the spindle body at a remote location. [Constitution] In the earth retaining device for excavation trenches, the spindle 4
Is composed of a pivot member 4b, a spindle body 4a having a spindle cylinder 10 and a locking member 4c, and the spindle body 4a can be horizontally rotated from a remote place around the pivot member via a swing holder 23. Earth retaining device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an earth retaining device for a trench to be excavated for burying main pipes of city gas, water and sewage in the ground, and particularly to improvement of a spindle for horizontally rotating the spindle to secure a descending passage for the main pipe. .

[0002]

[Prior art]

 Conventionally, guide rails that are erected at required intervals along both sides of the groove to be excavated, an earth retention panel that is slidably fitted between the guide rails for retaining the earth in the excavation groove, and guides that face each other in the groove width direction. There is known an earth retaining device which is composed of a spindle as a notch for connecting rails, or an earth retaining device which is composed of a spindle as a notch attached to both left and right ends of the earth retaining panel and the earth retaining panel (for example, Japanese Utility Model Publication No. 3-32643). ).

However, the spindle is usually provided on the guide rail or earth retaining panel (hereinafter, simply referred to as a panel) in an amount of 3 to 4 above and below, and is also provided at a short interval in the length direction of the groove. Although it is effective for retaining the strength of the retaining wall, it is used for laying buried pipes, especially for mains of city gas and water and sewage, and has a relatively large diameter and a length of 10 to several tens of meters. It is extremely inconvenient for laying. Therefore, as a solution to this problem, the spindle is connected to at least one of the soil retaining walls facing each other by a hinge that is pivotally movable in the horizontal direction, and when the pipe is moved down to the embedded setting position, A soil retaining device is known in which a spindle that obstructs successive passages is horizontally rotated to secure a descending passage for the pipe, and after passing through the pipe, the pipe can immediately return to the old state and be placed in an erected state. No. 51086).

[0004]

[Problems to be solved by the device]

 The pipe is buried from the part where the earth retaining wall has been constructed, but the conventional spindle with a turnbuckle that can expand and contract as described above is used to suspend humans in the groove after suspending the pipe with a wire. Then, after shortening the turnbuckle, it is rotated horizontally. The tube is lowered above the spindle at the next depth, and then again the human restores the spindle in the groove. This operation is performed over the entire length of the tube until the tube is repeatedly lowered to the desired position. Therefore, there is a problem that the spindle work must be performed in the groove for a long time in a dangerous situation. This is especially a problem in the narrow working environment where the groove width is 1 m or more.

The present invention has been made to solve this problem, and at the time of embedding a pipe, there is a risk that a person may enter a groove under a pipe suspended by a wire and horizontally rotate the spindle. However, the spindle can be horizontally rotated at a remote place outside the groove, and at the same time, the pipe burying work can be speeded up.

[0006]

[Means for Solving the Problems]

 The gist of the present invention is as follows. Between the guide rails standing upright at the required intervals along both sides of the excavation groove, the soil retaining panels slidably fitted between the adjacent guide rails on both sides of the excavation groove, and between the guide rails facing in the groove width direction. Soil retaining device equipped with a spindle as a notch for connection, or a panel standing upright at a required interval along both sides of the excavation groove, and a spindle as a notch for connecting between panels facing each other in the groove width direction. In the soil retaining device, the spindle includes a spindle body including a pivot member, a cylinder having a proximal end coupling tool having one end coupled to the pivoting member and a tip end coupling tool having the other end coupled to a locking member, and a spindle body. An earth retaining device with a spindle, characterized in that the spindle main body can be horizontally rotated from outside the excavation groove around the pivot member via a swing holder.

[0007]

[Action]

 The spindle is composed of a spindle body composed of a pivot member, a cylinder having a proximal end connecting member having one end connected to the pivot member, and a distal end connecting member having the other end connected to an engaging member, and an engaging member. In the soil retaining device installed in the excavation trench, usually 3-4 spindles are provided in the height direction of the trench.

With respect to the spindle mounted on the uppermost stage, the cylinder is contracted by operating the cylinder from the outside of the groove, the tip connector of the cylinder is separated from the locking member, and the spindle main body is removed from the outside of the groove by the swing holding tool. After horizontal rotation, lower the tube below the spindle position. Next, rotate the spindle body to the original position with the swing holder, hold it at the position where the tip connector of the cylinder and the locking member can be connected, and extend the cylinder by the cylinder operation to lock the tip connector. Engage with a member.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The guide rails and panels used in the present invention may be conventionally known ones. In FIG. 1, reference numeral 1 denotes a guide rail, and the guide rails 1 are provided at opposite positions of the excavation groove along the longitudinal direction of the groove. Many are arranged at intervals. The guide rail 1 has lip groove-shaped guide grooves formed at both ends in the longitudinal direction of the groove, and the side edges of the panel 2 are slidably fitted in these guide grooves. A plurality of vertically elongated holes 3 are provided at required intervals in the vertical direction on the inner side of the groove, and an end of a spindle 4 described later is fitted and locked in the vertically elongated hole 3. There is.

As shown in FIG. 1, the panel 2 is used by adding a plurality of pieces in accordance with the depth of the excavation groove. Both side ends of the panel 2 can slide up and down in the guide groove of the guide rail 1. And a vertically elongated hole 3A is provided in the vertical direction on the side located inside the excavation groove in the vicinity thereof. This vertically elongated hole 3A is for directly mounting the spindle 4 when the guide rail 1 is not used.

As shown in FIG. 1, a plurality of spindles 4 are installed as notches to be spaced apart in the vertical direction of the guide rail 1. As shown in FIGS. 2 and 3, the spindle 4 is provided between the spindle body 4a, which is a hydraulic or hydraulic cylinder that can be extended and contracted from a distance, and the connecting piece 22 of the locking member 4c. Is inserted and connected to the locking member 4c by a pin 22b penetrating the hole 22a of the connecting piece 22 and the hole 14a of the tip connecting tool 14.

As shown in FIG. 1, the above-mentioned device is assembled and set up in the longitudinal direction of the groove to construct a soil retaining device in the excavation groove. When burying the pipe, first, in the spindle located within the range corresponding to one pipe attached to the uppermost stage, one of the pins 20 inserted into the hole 19a of the connecting piece 19 of the pivot member 4b, After pulling out the pin 22b inserted into the hole 22a of the connecting piece 22 of the locking member 4c, the cylinder 10 is contracted from the outside of the groove by the cylinder operation to separate the tip connector 14 of the cylinder from the locking member 4c. After that, a swing holder 23 having a U-shaped lower end, as shown in FIG. 4, holds the spindle body 4a from the outside of the groove, and uses the pin 20 of the pivot member 4b, which is not pulled out, as the spindle. After horizontally rotating the main body 4a, the pipe is lowered from the uppermost spindle position and held between the second spindle position and the swing holder 23 to move the spindle main body 4a in the opposite direction. Back to the dynamic is not original position. Next, the tip connecting tool 14 and the locking member 4c are held at a position where they can be connected, and the cylinder is extended by the cylinder operation to engage the tip connecting tool 14 with the locking member 4c. After this, for the first time, a person enters the groove and inserts the pins 20 and 22b that have been removed first into the holes of the connecting pieces 19 and 22 to prevent the proximal end connecting tool 13 and the distal end connecting tool 14 from coming off.

After that, the worker goes out of the trench and repeats the above operation to lower the pipe to the bottom of the excavation trench. After that, if the soil is backfilled and the soil retaining device is pulled out, the construction is completed.

The spindle has a pivoting member 4b that allows the base end of the spindle body 4a to be horizontally rotatable on the guide rail 1 and an engaging member that locks the free end side of the spindle body 4a to the opposing guide rail 1. It is composed of a stop member 4c.

As shown in FIGS. 2 and 3, the spindle body 4a includes a cylinder 10, a box 12 for accommodating the base end of the cylinder, a base end connector 13 connected to the pivot member 4b, and a tip of the cylinder. The cylinder 10 has a tip connector 14 that is connected to the locking member 4c and is connected to the locking member 4c. The cylinder 10 has a desirable length of a pipe 11 through which water or oil as a driving source is passed so that the telescopic operation can be performed from a distance. It is installed at. To accommodate and fix the base end of the cylinder 10 in the box 12, a pin 12b is attached through the hole 12a of the box 12 and the hole 10a of the base end of the cylinder 10 and is attached to the rear side. The end connector 13 is fixed.

The pivot member 4b includes a plate 15 and a tip receiving main body 16 on the back side of the plate 15 similar to that disclosed in Japanese Utility Model Laid-Open No. 3-32643 and a front side of the plate 15 (facing the groove center). Side) is composed of connecting pieces 19 which are vertically arranged side by side at a required interval, and is inserted into the vertically elongated hole 3 of the guide rail 1 and then rotated about 90 degrees to be fitted and locked in the guide rail 1. A stop member 17 is attached to the tip receiving body 16 via a wedge 18.

The base end connecting tool 13 of the spindle body 4 a is inserted and arranged between the connecting pieces 19 of the pivot member 4 b, and the pin 20 penetrating the hole 19 a of the connecting piece 19 and the hole 13 a of the base end connecting tool 13 is inserted. When only one pin is inserted, it can be horizontally rotated to the side having the pin 20 as an axis. When the pin 20 is inserted into the two holes, the rotation of the base end coupling tool 13 is blocked.

The locking member 4c includes a plate 21, a tip receiving main body 16 on the back side of the plate 21, and a connecting piece 22 vertically arranged side by side on the front side of the plate 21 at a required interval.

[0019]

[Effect of device]

 As described above, according to the present invention, when burying a pipe, it is not necessary for a person to enter the excavation groove and perform dangerous work under the condition that the pipe is suspended by a wire. This is effective when a person who moves fast and has a narrow groove has difficulty in moving.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a spindle body and a pivot member of a spindle used in the present invention.

FIG. 3 is a perspective view of a spindle body and a locking member of a spindle used in the present invention.

FIG. 4 is a perspective view of the swing holder holding the spindle body.

[Explanation of symbols]

 1 Guide Rail 2 Panel 3, 3A Longitudinal Hole 4 Spindle 4a Spindle Body 4b Pivot Member 4c Locking Member 10 Cylinder 10a Hole 11 Pipe 12 Box 12a Hole 12b Pin 13 Base End Connector 13a Hole 14 Tip Connector 14a Hole 15 Plate 16 Tip receiving body 17 Retaining member 18 Wedge 19 Connecting piece 19a hole 20 Pin 21 Plate 22 Connecting piece 22a Hole 22b Pin 23 Swing holder

Claims (1)

[Scope of utility model registration request] 1. A guide rail standing upright at a required interval along both sides of the excavation groove, an earth retaining panel slidably fitted between adjacent guide rails on both sides of the excavation groove, and facing each other in the groove width direction. An earth retaining device equipped with a spindle as a notch for connecting between the guide rails, or a panel as a notch for connecting between panels that are erected at required intervals along both sides of the excavation groove and panels facing each other in the groove width direction. In an earth retaining device including a spindle, the spindle is a spindle body including a cylinder having a pivot member, a proximal end connector having one end connected to the pivot member, and a distal end connector having the other end connected to a locking member. And a locking member, and the spindle main body can be horizontally rotated from the outside of the excavation groove around the pivot member via the swing holder, and the earth retaining device having a spindle. Place