JP3123878B2 - Ground insertion rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground insertion rod or monitor which is inserted into the ground for the purpose of stabilization of soft ground, foundation of a structure, injection or geological survey for ground support, underground excavation, etc. It is about.

[0002]

2. Description of the Related Art Conventionally, regarding a rod to be inserted into the ground for injection or excavation, the rod is propelled and inserted into an insertion ground with an opening of a nozzle or the like being exposed, and particularly to an insertion ground. It is not protected, especially in the high-pressure injection injection method of hardening material, many materials such as hardening material, pressure water, air, etc. are incorporated in the injection system, and the injection rod including the slime suction hole etc. Many openings are set on the side wall on the tip side, and protection of the opening into the ground, such as intrusion of mud, has become a problem.

[0003]

Therefore, in the conventional high-pressure injection injection method, when the injection environment is under the influence of the pressurized water, it is impossible to perform the installation. Particularly, when the rod is inserted in the horizontal direction, Even when the injection nozzle is not under the influence of the pressurized water, the injection nozzle setting section faces upward due to the rotation of the injection rod and receives the earth pressure directly, so that the injection nozzle may be clogged or slime may be generated inside the rod. There was a problem that the construction had to be interrupted due to intrusion into the building.

[0004] Further, if the opening diameter of the injection nozzle is made small, it is possible to prevent the intrusion of earth and sand in the injection rod from the opening of the injection nozzle when the injection rod is inserted into the target ground. However, there is a problem that it is not possible to secure the discharge amount.

With respect to the protection of the opening, it has been proposed to provide an opening / closing gate to open / close when necessary, but it is mechanically possible to open / close the gate of a rod inserted into the ground by operation from the ground. There is also a problem that the structure becomes complicated and the diameter of the rod increases accordingly.

[0006]

In order to solve the above problems, the present invention provides a cover for opening and closing the opening of an insertion rod, and closes the cover when the rod is underground to cover the opening. In addition, the rod is opened only when the opening such as the injection of the hardening material is actuated, thereby preventing the earth and sand from entering the rod and inserting the rod into the ground.

Further, the structure of the opening cover is constituted by an opening / closing lid which slides along the opening, a cylinder chamber for slidably storing a pressure receiving portion provided on the opening / closing lid is provided, and a fluid to be pumped into the cylinder chamber is provided. The opening / closing operation of the opening is performed by operating the pressure receiving portion of the opening / closing lid by pressure.

Further, if necessary, a nozzle mechanism is provided at a predetermined position in the cylinder chamber, and a fluid to be sent to the cylinder chamber is jetted in a predetermined direction by the nozzle mechanism in accordance with the movement of the pressure receiving portion of the opening / closing lid to the predetermined position. With such a configuration, the working fluid in the rod opening / closing lid can be used for the transfer force in the rod, thereby contributing to the simplification of the transfer mechanism in the rod.

Further, when necessary, one end of the opening / closing lid is urged in a predetermined direction of the cylinder chamber by a spring to ensure the operation of the opening / closing lid.

[0010]

When fluid, such as compressed air or high-pressure water, is introduced into the opening operation space 41 of the cylinder chamber 4 provided on the inner wall of the rim of the rod side wall opening 2, the pressure of the opening / closing lid 3 housed in the cylinder chamber is received. The section 32 receives the introduction pressure and the opening 2
To move the cover 31 of the open / close lid closing the opening to open the opening.

The closed working space 42 of the cylinder chamber
When the fluid is introduced into the opening, the cover 31 of the opening / closing lid that follows the movement of the pressure receiving part 32 moves over the opening 2 and closes the opening. By selecting the working space and performing the fluid introduction operation, the opening and closing of the rod opening inserted into the ground can be freely performed at any time.

In another embodiment, when one end of the opening / closing lid is urged in a predetermined direction of the cylinder chamber by a spring 5 in the cylinder chamber, a fluid is introduced into a fluid introduction space of the cylinder chamber to open / close the lid. Moves to the opening or closing position of the opening against the urging force of the spring 5, so that the opening / closing lid is restored to the original position by the urging force of the spring by stopping the introduction of the fluid and relaxing the sending pressure. Is simplified.

As still another embodiment, a nozzle mechanism 43 is provided at a predetermined position in the cylinder chamber 4, and a fluid to be pumped to the cylinder chamber is predetermined by the nozzle mechanism 43 in response to the movement of the open / close lid pressure receiving portion 32 to the predetermined position. If it is configured to be ejected in the direction, materials, slime, and the like taken into the rod 1 from the opening 2 can be conveyed by the ejection force.

If the ground insertion rod constructed as described above is inserted into the target ground with the opening 2 closed with the opening / closing lid 3, the opening 2 is turned upward or the target ground is affected by the pressurized water. Since the opening is closed even if it is below, intrusion of earth and sand into the rod is prevented.

When a predetermined depth is reached, when a fluid such as compressed air or high-pressure water is introduced into the opening operation space 41 of the cylinder chamber 4, the opening is opened, and materials and slime in the ground are sucked, or the opening is opened. The ground hardening material or the like is jetted from the ground hardening material jet nozzle set to.

For the purpose of collecting data from the ground, for example, fluid is introduced into the closed working space 42 of the cylinder chamber after a predetermined time to close the opening 2.

When the ground hardening material is injected, the ground hardening material is jetted from an injection nozzle set at the opening, and the hardening material jet is used to cut and agitate the surrounding ground while rotating and pulling out the rod. By doing so, an injection layer of a hardening material or the like is formed along the movement locus of the injection nozzle.

As described above, according to the present invention, the opening 2 is closed when the ground insertion rod 1 is underground propelled, and is opened only when the slime is inhaled or the hardening material is injected. The slime suction hole is enlarged to increase the amount of suction, or the injection diameter is increased by increasing the nozzle diameter of the injection nozzle, because forward, backward, and rotation are performed while preventing It is possible to perform injection work even on the ground under the influence of pressurized water.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described in the case where one end of an opening / closing lid is first urged by a spring in a cylinder chamber and a slime suction hole is provided at a predetermined position of the cylinder chamber with a nozzle mechanism. Will be described.

Reference numeral 1 denotes a ground insertion rod, which is supported by an operating mechanism for performing operations such as forward, backward, rotation, and reciprocating rotation at a predetermined angle as required.

An opening 2 for inhaling slime is opened on the side wall of the rod 1, and a pressure receiving portion 32 of an opening / closing lid 3 slidable along the opening is slidable on the inner wall of the rim of the opening 2. A cylinder chamber 4 for storing is provided.

The upper end of the opening / closing lid 3 is urged by the spring 5, and when no fluid is introduced into the working space 41 of the cylinder chamber 4, the cover 31 of the opening / closing lid is on the opening 2, and the opening is closed. Located in a closed state.

An open operation space 41 is provided above the cover 31.
When the opening / closing lid 3 is lowered by the introduction of the fluid into the
An open hole 33 that overlaps with the opening 2 and opens the opening 2 is opened.

When the lid 3 is lowered into the cylinder chamber 4, it opens into the working space 41 and the cylinder chamber 4
Nozzle mechanism for injecting fluid pressurized into the inside to the discharge path 7
43 are provided.

Reference numeral 8 denotes a housing for an operation mechanism corresponding to the operation of the opening 2, such as a ground hardening material injection mechanism, and 6 denotes a fluid supply path to the cylinder chamber 4.

The ground insertion rod 1 configured as described above is advanced while being appropriately rotated by an operating mechanism with the opening 2 closed, and inserted into the target ground. The length of the rod is appropriately connected as needed.

When the rod 1 reaches a predetermined depth, for example, a hardening material or the like is injected and injected by an injection nozzle provided in another part of the rod 1, thereby generating slime and increasing the internal pressure of the ground. This is sensed by a sensor, and compressed air is introduced into the space 41 of the cylinder chamber 4 by a corresponding operation.

When the pressure of the introduced compressed air is received by the pressure receiving portion 32 of the opening / closing lid 3, the opening / closing lid 3 descends against the urging force of the spring 5, and the opening 33 overlaps with the opening 2 and the opening 2 overlaps with the opening 2. 2
To release.

When the opening 2 is opened, the slime around the rod, which has been pressed by the increased ground pressure, flows into the rod from the opening 2, is sucked into the discharge path 7, and flows through the discharge path 7. It is conveyed and discharged outside.

Further, the lowering of the opening / closing lid 3 causes the operating space 41 to move.
When the nozzle mechanism 43 opens into the space 41 and the compressed air pressurized into the space 41 is injected in the discharge direction of the discharge path 7, a negative pressure is generated in the vicinity of the slime suction opening and the slime is generated. And the air ejection in the discharge direction enhances the conveying force of the discharge path 7.

When the internal pressure of the ground decreases due to the suction of the slime, the pressure is sensed by the pressure sensor. When the introduction of the compressed air into the space 41 is stopped, the opening / closing lid 3 is raised by the urging force of the spring 5 and the cover 31 is opened. Move over part 2 to close the opening.

As described above, while adjusting the slime by opening and closing the opening and closing cover 3, the injection layer is formed along the rotation of the injection nozzle and the backward movement of the injection rod.

FIG. 3 shows a state in which a fluid such as compressed air or high-pressure water is selectively introduced into the open working space 41 and the closed working space 42 of the cylinder chamber 4 without using a spring.
1 shows a basic configuration for opening and closing a device.

[0034]

Since the present invention is constructed as described above, the opening provided in the rod side wall can be freely opened and closed in the insertion ground, and reliable operation can be expected with a simple structure. It can be used for ground insertion for various purposes.

In particular, when the ground hardening material is injected, the injection nozzle can be protected by the opening / closing lid even on the ground under the influence of the pressurized water, so that the construction can be performed while preventing muddy water from entering the injection nozzle. Further, there is an effect that the injection rod can be inserted in a horizontal direction and the injection nozzle can be rotated upward to perform injection.

[0036]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a ground insertion rod showing a main part of an opening / closing lid operating mechanism according to an embodiment using a spring of the present invention.

FIG. 2 is a vertical cross-sectional side view of the open / close lid shown in FIG.

FIG. 3 is a longitudinal sectional side view of a ground insertion rod showing a main part of an opening / closing lid operating mechanism according to a basic embodiment without using a spring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground insertion rod 2 Opening 3 Opening / closing lid 31 Cover of opening / closing lid 32 Pressure receiving part of opening / closing lid 33 Opening hole of opening / closing lid 4 Cylinder room 41 Opening space of cylinder room 42 Closing operation space of cylinder room 43 Cylinder room Nozzle mechanism 5 Spring 6 Fluid supply path to cylinder chamber 7 Discharge path 8 Housing for other operating mechanisms

Claims (3)

(57) [Claims] 1. A cylinder chamber for slidably receiving a pressure-receiving portion of an opening / closing lid sliding along an opening is provided on an inner wall of an edge portion of an opening provided on a side wall, and a fluid pressure in the cylinder chamber is reduced. the pressure receiving portion by the lifting operation by entering disconnect, the opening and closing of the opening of the other
Ground insertion rod characterized in that it can be operated at any time independently of the mechanism operation 2. A nozzle mechanism is provided at a predetermined position in the cylinder chamber, and fluid in the cylinder chamber is pressed out in response to the movement of the pressure receiving portion of the opening / closing lid to the predetermined position, and is jetted in a predetermined direction in the rod by the nozzle mechanism. 2. The ground insertion rod according to claim 1, wherein a negative pressure is generated in the vicinity of the opening in the rod. 3. The ground insertion rod according to claim 1, wherein one end of the opening / closing lid is urged in a predetermined direction by a spring.