JPH0652036B2 - Propulsion device for burying pipes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pipe body for use in the case of propulsion burying pipe bodies for waterworks, pipes for cables, pipes for sewerage and other uses in the ground. The present invention relates to a propulsion device for burial.

[Conventional technology]

Conventionally, as a propulsion device for burying a tubular body, Japanese Patent Application No. 60-18
The propulsion device shown in No. 3870 has been proposed. In the case of this propulsion device, as shown in FIGS. 11 and 12, the tubular body propulsion member 9 is slid in the front-rear direction on the guide rail 8 extending in the front-rear direction in the support frame 7 fixed in the shaft 1. It is movably fitted and has a large number of pin holes 10.
Are provided at regular intervals in the front-rear direction, propulsion hydraulic jacks 11 extending in the front-rear direction are provided on both left and right sides of the tubular propulsion member 9, and the rear end portion of the piston rod 12 of the propulsion hydraulic jack 11 is A locking metal fitting 13 slidably fitted to the guide rail 8 is connected, and a locking pin 14 is inserted through a pin hole in the locking metal fitting 13 and a pin hole 10 in the guide rail 8.

When propelling the tubular body 15 into the ground, the locking metal fitting 13 is arranged at the rear end of the guide rail 8 and the locking pin 14 is provided.
Is engaged with the guide rail 8 and the rear end of the tubular body 15 is fitted to the front projection 26 of the tubular body propelling member 9, and then the propulsion hydraulic jack 11 is extended to extend the tubular body propelling member. After moving the pipe body 15 forward by a predetermined stroke by 9, the locking pin 14 is pulled out to shorten the propulsion hydraulic jack 11, and then the locking metal fitting 13 is locked by the locking pin 14 to the guide rail 8. After that, the propulsion hydraulic jack 11 is extended to move the pipe body propulsion member 9 and the pipe body 15 forward, and the same operation is repeated thereafter to intermittently repeatedly move the pipe body 15 forward.

[Problems to be solved by the invention]

However, in the case of the conventional tube-embedding propulsion device, since the propulsion hydraulic jack 11 having a long stroke cannot be used, it is necessary to change the engagement position of the engagement fitting 13 with respect to the guide rail 8 by inserting and removing the engagement pin 14. Since it has to be performed many times, there are problems that the operation is complicated and the propulsion efficiency is low.

Further, in the case of the conventional example, since the undulating hydraulic cylinder is not provided, there is a problem in that it cannot be adjusted in the vertical direction of the tubular body that is propelled into the ground.

[Object and Structure of Invention]

An object of the present invention is to provide a propulsion device for burying a pipe, which can advantageously solve the above-mentioned problems. The gist of the present invention is to fix it in a shaft 1 that is sunk in the ground. The support frame 2 includes a reaction force receiving plate 20 and a moving frame 3 pivotally attached to the front portion of the reaction force receiving plate 20 by a horizontal shaft 21. The bracket is fixed to the reaction force receiving plate 20. 35 and the vicinity of the cylinder 30 of the moving frame 3 are connected via an undulating hydraulic cylinder 36 to the guide rail 17 of the support frame 2.
A movable frame 3 is movably fitted in the front-rear direction, and the movable frame 3 and a rear portion of the support frame 2 are connected via a first hydraulic jack 4 for propulsion extending in the front-rear direction, and a tubular body propulsion frame The front part of 5 and the rear part of the moving frame 3 are connected to each other via a second hydraulic jack 6 for propulsion.

〔Example〕

 The present invention will now be described in detail with reference to the illustrated example.

FIGS. 1 to 10 show an embodiment of the present invention, in which a pair of steel guide rails 17 having a U-shaped cross section extending in the front-rear direction are arranged in parallel in the left-right direction at intervals. The openings of the guide grooves 16 in each guide rail 17 are arranged so as to face each other, and the lower front portion of each guide rail 17 is fixed to the upper portion of the steel groove-shaped frame 18, and further in the upper portion of each guide rail 17. An upper guide groove 19 extending in the rail longitudinal direction is provided in a portion excluding the rear end portion, and openings of the upper guide grooves 19 face each other. Further, the lower flat surface of the upper guide groove 19 is arranged at the same level as the upper surface of the rear portion of the guide rail 17, and the left and right sides of the flat circular arc-shaped reaction force receiving plate 20 abutting against the inner surface of the rear portion of the steel cylindrical vertical shaft 1. Both end portions and the rear end portion of each guide rail 17 are pivotally attached by a horizontal shaft 21 extending in the left-right direction on the same straight line and connected by the groove-shaped frame 18 to each other.
The upper guide groove 19 provided in the upper portion of the guide rail 17 and the reaction force receiving plate 20 pivotally attached to the rear end of each guide rail 17 constitute the support frame 2.

Four turnbuckle type fixing jacks 22 are radially arranged at intervals of 90 °, the base end of the fixing jack 22 is fixed to the guide rail 17, and the tip of the fixing jack 22 has a vertical shaft. 1, a shoe 23 to be crimped is attached to the guide rail 17, and a pair of tube support rollers 24 are arranged in the lower front portion between the guide rails 17. The rollers 24 are fixed by a hydraulic cylinder 25 fixed to the support frame 2. It is supported.

The left and right sides of the moving frame 3 are slidably fitted in the guide grooves 16 of the respective guide rails 17, and the rear of the piston rod 27 of the first hydraulic jack 4 for propulsion provided on the left and right sides of the moving frame 3. The end portion is connected to the rear end portion of the guide rail 17, and the pipe fitting support flange 29 is integrally provided on the outer periphery of the rear end portion of the cylindrical body 28 whose front end is closed. Further, the cylinder 30 of the second hydraulic jack 6 for propulsion is slidably inserted into the tubular body propulsion frame 5, and the front end portion of the piston rod 31 of the second hydraulic jack 6 for propulsion has the above-mentioned pipe. The rear end portion of the cylinder 30 of the second propulsion hydraulic jack 6 connected to the front end plate of the body propulsion frame 5 and the support member 32 fixed to the center of the rear end portion of the moving frame 3 extend in the left-right direction. Horizontal axis It is pivotally connected by three.

Guide members 34 that are fitted into the upper guide groove 19 are integrally provided on both left and right sides of the flange 29 for fitting and supporting the pipe end in the pipe propulsion frame 5, and at the lower center of the rear end of the moving frame 3. A downwardly projecting bracket 35 is integrally provided, and a lower end portion of the bracket 35 and a bracket provided at a lower portion on the rear end side of the cylinder 30 are connected to each other via an undulating hydraulic cylinder 36.

The vertical shaft 1 includes a lower vertical shaft 38, a middle vertical shaft 39, and a vertical vertical shaft 4.
0, and the upper joint ring 41 and the lower joint ring 42, which are provided at the joints of the vertical shafts 38, 39, 40, are fitted to each other and connected by vertical bolts 43. The steel shaft 1 constructed in this way is placed on the ground, and as shown in FIG. 8, the excavator 44 such as a clam shell excavates and discharges the earth and sand below the shaft 1 and rotates. By being pressed by the pressing device 45 while being repeatedly rotated, the ground is sunk to a predetermined depth.

After the vertical shaft 1 is sunk to a predetermined depth, floor concrete 47 is placed at the bottom of the vertical shaft 1 as shown in FIG.
After the floor concrete 47 is hardened,
As shown in FIG. 5 and FIG. 5, a level adjusting support member in which a pipe underground starting opening 48 is formed by fusing at a predetermined position in the front part of the lower shaft 38 and is placed on the floor concrete 47. The propulsion device 50 for burying the pipe body is hung on 39.

When propelling the pipe body into the ground, first, as shown in FIG. 5, the pipe body propelling frame 5 is erected and vertically rotated by the undulating hydraulic cylinder 36 to make the pipe body substantially vertical. While suspending and inserting the pipe body 15 into the propulsion frame 5,
The end of the pipe body 15 is fitted and locked to the pipe end fitting support flange 29, and then, as shown in FIGS. 1 and 3, the undulating hydraulic cylinder 36 is used to form the pipe body propulsion frame 5 and the pipe. The body 15 is tilted and rotated to be substantially horizontal, and the tube body 15 is supported by the tube body supporting roller 24.

Next, as shown in FIG. 6, the first hydraulic jack 4 is extended to move the moving frame 3, the second hydraulic jack 6, the tubular body propulsion frame 5 and the tubular body 15 forward to move the tubular body. 15 is propelled into the ground through the opening 48 for starting the pipe underground. Next, after the first hydraulic jack 4 has been extended for the entire stroke, as shown in FIG. 7, the second hydraulic jack 6 is extended to move the pipe body propelling frame 5 and the pipe body 15 forward, After the second hydraulic jack 6 has been extended over the entire stroke, the first hydraulic jack 4 and the second hydraulic jack 6 are shortened to the shortest state, and the steel pipe is formed in the vertical shaft 1 at the rear end of the pipe body 15. The front part of the joint collar 51 is fitted.

Next, after raising the tubular body propulsion frame 5 again, the other tubular body 15 is suspended and set on the tubular body propulsion frame 5,
Next, the tube propelling frame 5 and the tube body 15 are laid down, and subsequently, as described above, the first hydraulic jack 4 and the second hydraulic jack 6 are sequentially extended to advance the tube body 15 in the vertical shaft 1. Then, the front end of the tubular body 15 is fitted into the steel joint collar 51, each tubular body 15 is propelled into the ground, and the same operation is repeated thereafter, so that the required number of tubular bodies can be obtained. Promote 15 underground.

When propelling the pipe 15, the first hydraulic jack 4 may be extended by the full stroke after the second hydraulic jack 6 is extended by the full stroke, or the first hydraulic jack 4 and the second hydraulic jack are extended. 6 may be extended at the same time.

When carrying out the present invention, as the means for fixing the support frame 2 to the vertical shaft 1, any means other than the illustrated one may be adopted.

〔The invention's effect〕

According to the present invention, the support frame 2 fixed in the shaft 1 sunk in the ground is provided with the reaction force receiving plate 20 and the reaction force receiving plate 2.
The moving frame 3 pivotally attached to the front part of 0 by a horizontal shaft 21 and the bracket 35 fixed to the reaction force receiving plate 20 and the vicinity of the cylinder 30 in the moving frame 3 are hydraulic cylinders for undulation. The moving frame 3 is fitted to the guide rail 17 of the support frame 2 so as to be movable in the front-rear direction, and the moving frame 3 and the rear portion of the support frame 2 extend in the front-rear direction. Is connected via the first hydraulic jack 4 for driving, and the front portion of the tubular body propulsion frame 5 and the rear portion of the moving frame 3 are connected via the second hydraulic jack 6 for propulsion,
It is possible to use the first hydraulic jack 4 and the second hydraulic jack 6 which are longer than the propulsion hydraulic jack 11 in the previously proposed propulsion device for burying pipes, and the hydraulic jacks 4 and 6 can be used. The pipe body 15 can be moved by the sum of the strokes, and therefore, by extending each hydraulic jack 4, 6 once in the narrow shaft 1, the pipe body 15 can be continuously moved forward for a considerably long time. In addition, since it is not necessary to repeatedly perform the complicated insertion / removal operation of the locking pin 14 as described above, it is possible to easily and highly efficiently propel the pipe body 15 in the ground, and the undulating liquid. Pressure cylinder 36
By expanding and contracting, the effect of easily fine-adjusting the propulsion direction of the tubular body 15 upward or downward can be obtained.

[Brief description of drawings]

1 to 10 show an embodiment of the present invention, in which FIG. 1 is a partially cross-sectional plan view of a tubular body burying propulsion device fixed to a vertical shaft, and FIG. 2 is fixed to the vertical shaft. 4 is a partial cross-sectional plan view showing the propulsion device for burying a pipe body before the operation, FIG. 3 is a partial vertical side view of the propulsion device for burying a pipe body fixed to a vertical shaft, FIG.
FIG. 5 is a vertical sectional front view of the propulsion device for burying a pipe, FIG. 5 is a vertical sectional side view showing a state in which a propulsion frame for a propulsion device for burying a pipe is erected in a vertical shaft, and FIGS. 6 and 7 are pipes. Partial cross-sectional plan view showing the order of propelling the body, FIG. 8 is a schematic vertical sectional side view showing a state in which the shaft is submerged in the ground, and FIG. 9 is a vertical sectional view showing a connecting portion between the lower shaft and the middle shaft. A side view and FIG. 10 are longitudinal side views showing a connecting portion between the intermediate shaft and the upper shaft. FIG. 11 is a partial cross-sectional plan view showing a conventional pipe-embedding propulsion device arranged in a shaft, and FIG. 12 is a cross-sectional plan view showing a part of the propulsion device in an enlarged manner. In the figure, 1 is a shaft, 2 is a support frame, 3 is a moving frame, 4 is a first hydraulic jack for propulsion, 5 is a tubular body propulsion frame, 6 is a second hydraulic jack, 15 is a tubular body, and 16 is a guide. Groove, 17 is a guide rail, 18 is a grooved frame, 1
9 is an upper guide groove, 20 is a reaction force receiving plate, 22 is a fixing jack, 24 is a tube support roller, 25 is a hydraulic cylinder,
Reference numeral 28 is a cylindrical body, 29 is a flange for fitting the pipe end, 30 is a cylinder, 31 is a piston rod, 33 is a horizontal axis, 34 is a guide member, 36 is a hydraulic cylinder for undulation, and 48 is a pipe body for starting from the ground. It is an opening.

Claims (1)

[Claims] 1. A support frame 2 fixed in a shaft 1 submerged in the ground, a reaction frame 20 and a movable frame 3 pivotally attached to a front portion of the reaction frame 20 by a horizontal shaft 21. And a bracket 3 fixed to the reaction force receiving plate 20.
5 and the vicinity of the cylinder 30 in the moving frame 3,
The moving frame 3 is connected to the guide rails 17 of the support frame 2 by being connected via the undulating hydraulic cylinder 36.
Is movably fitted in the front-rear direction, and its moving frame 3
The rear part of the support frame 2 is connected via a first hydraulic jack 4 for propulsion extending in the front-rear direction, and the front part of the tubular propulsion frame 5 and the rear part of the moving frame 3 are the second propulsion liquid. A propulsion device for burying a pipe body, which is connected via a pressure jack 6.