JPS63156194A - Small-bore pipe propulsion method and device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial field of application] A small diameter pipe propulsion method and method that enables small diameter pipes such as water and sewage pipes and gas pipes to be buried in a straight state without digging side ditches. This invention relates to the device.

C. Prior Art] An adjustment body having an inclined portion at the tip, which is housed in an outer propulsion tube that constitutes the outer shape of the leading tube, is operated only by the adjustment body operation tube in a shaft where jacking operations are performed for the propulsion tube and the adjustment body operation tube. Then, according to the degree of propulsion of the leading tube in the wrong direction, a sloped portion is projected from the front end surface of the outer propulsion tube, and a pointed end forming the sloped portion is rotated to the opposite side of the wrong direction, and the protrusion is By performing a jacking operation on the adjustment body together with the propulsion outer pipe in the shaft while maintaining the propulsion outer pipe to give a propulsion effect, the earth pressure effect received by the propulsion effect can be applied to the leading pipe in accordance with the slope and its protrusion amount. A small-diameter pipe long-distance precision propulsion method (
(Japanese Patent Publication No. 57-49719) and a straight outer tube whose tip is cut obliquely and sealed and a target plate is provided inside the propulsion tube, and a straight outer tube whose tip is hermetically sealed is fitted to the outer periphery of the propulsion tube The propulsion tube was moved forward while rotating by a buried tube whose tip always protruded a certain length from the straight outer tube, and the straight outer tube was advanced and buried together with the propulsion tube, and displacement was observed in the propulsion direction of the propulsion tube. At this time, the inclined surface at the tip of the propulsion tube is rotated to the opposite side of the correction direction and rotation is stopped, and then the propulsion tube is moved straight and earth pressure is applied to the inclined surface to correct the propulsion direction of the propulsion tube, and then the propulsion tube is propelled again. A method for burying a small-diameter lead pipe for burying a hume pipe or the like (Japanese Patent Publication No. 55679/1983) is known, which is characterized by rotating and moving the pipe forward.

[Problem that the invention seeks to solve]

All conventionally known propulsion methods and devices have problems such as requiring a considerable amount of rotational force to rotate because they are formed into a wedge shape.The present invention aims to solve this problem. It is something to do.

[Means for solving problems]

A propulsion tube in which a direction adjustment device is formed by engaging an eccentric hole and an eccentric pressing rod on one side from the center point, and a direction adjustment device is formed double inside and outside of a direction adjustment tube in which a direction adjustment tube and a pressing rod are connected by a universal joint. The center of the target is fixed to the tip of the inner tube of the press rod, and light emitting diodes are attached at two places, the center point of the rear surface of the press rod and the correction direction point. When the target center point deviates from the propulsion center line, propulsion is temporarily stopped, the center point is moved to a position away from the center point, and the target is pushed and propelled until the target center point begins to face the propulsion center line, and then rotational pressure propulsion is performed taking into account inertia. The problem was solved by successively repeating the pre-operation to propel the small-diameter pipe.

[For production]

A propulsion tube in which a direction adjustment device is formed by engaging an eccentric hole and an eccentric pressing rod on one side from the center point, and a direction adjustment device is formed double inside and outside of a direction adjustment tube in which a direction adjustment tube and a pressing rod are connected by a universal joint. The center of the target is fixed to the tip of the inner tube of the press rod, and light emitting diodes are attached at two places, the center point of the rear surface of the press rod and the correction direction point. When the target center point deviates from the propulsion center line, propulsion is temporarily stopped, the center point is moved to a position away from the center point, and the target is pushed and propelled until the target center point begins to face the propulsion center line, and then rotational pressure propulsion is performed taking into account inertia. , and thereafter, the pre-operation is repeated sequentially to propel the small-diameter pipe.

〔Example〕

The inner tube (1) and the outer tube (2) form a propulsion tube (3), with a middle tube at the tip. 1. ? ,,yo 9 piece 1,13□, Duke also Otobia 7
1. Uni. (4), and the eccentric pressing rod (4)
A pressing rod (6) with a flat longitudinal hole (5) in the rear
) is fixed to the tip of the inner tube (1) to form a hollow direction adjustment tube (7) with a conically pointed tip, and the direction adjustment tube (
7) Insert the pressing rod (6) into the shaft (8) and pass through the elongated hole (5) to connect the shaft (8) and the direction adjustment tube (7).
and fix the direction adjustment tube (with an O ring (9) inside the rear end of the force).
), and also attach the O-ring (9) to the pressing rod (
6), fit into the annular groove UO+, provide an eccentric hole (11) on one side of the inner front surface of the direction correction cylinder (7) from the center, and insert and lock the eccentric press rod (4) into the eccentric hole Uυ. A light emitting diode (1) is placed at the center point on the rear surface of the pressing rod (6) and at an intermediate position on the opposite side where the eccentric pressing rod (4) is provided.
At the same time, a series of auger screws are wound around the outer periphery of the inner tube (11 and the pressing rod (6)), and a series of auger screws are also wound around the outer periphery of the direction adjustment tube (7). In the front part of the direction adjustment cylinder (the force and the pressing rod (6) are connected by a universal joint through the elongated hole (5) and the shaft (8). An airtight tube αη is provided, a dry cell battery is installed inside, and a light emitting diode (121 (13) is connected to the tube for lighting.

Based on the above configuration, the present application has a propulsion machine (11
Attach the propulsion tube (3) to the propulsion mQI, attach the transit ■ to the rear of the propulsion machine a, and align the propulsion center line (q), which is the center point (sha) of the cross line (2I) of the transit Ca, with the target αa. Align the light-emitting diode α at the center point of After stopping the propulsion when it deviates from the line, the rotation of the inner tube (1) is stopped when the direction correction point is located on the symmetrical side away from the center point. The light emitting diode (I3) is positioned on the opposite side of the center point of the cross line Cυ of the transit (a), and the rotation of the inner tube (1) is stopped.

While the rotation is stopped, the propulsion tube (3) is pressed and propelled, and since the eccentric press rod (4) is fitted into the eccentric hole (1υ), the rotation causes the eccentric press rod (4) to be placed on the opposite side of the light emitting diode 03 position. 4), the direction adjustment tube (7) is operated to move toward the light emitting diode (13) side by pressing.Then, while the rotation is stopped, the propulsion tube (3) is pressed and propelled to correct the direction. Displace the tube (7) and press and propel until the light emitting diode 04 at the center point of target 0 (1) begins to face the center point @ of the cross line circle of the transit (to).After that, taking into account inertia, rotate and press propel. do.

Repeat the above steps to achieve the goal of linear propulsion.

Once the propulsion of the single-mouth propulsion tube (3) is completed, the propulsion tubes consisting only of the inner tube and the outer tube with an auger screw are added, and the straight line is installed up to the reaching vertical hole C23.

〔Effect of the invention〕

Since the direction correction cylinder is not wedge-shaped, there is little rotational reaction force, so rotational propulsion, rotational correction, or pressing propulsion can be performed with small rotational force.

[Brief explanation of the drawing]

Figure 1 is a sectional view during operation, Figure 2 is a sectional view of the main parts of the device, and Figures 3 to 7 are sectional views of the main parts of the work process, with a rear view of the target on the right side. . Patent applicant: 1 person other than Nitto Kogyo Co., Ltd. -- Figure 2 Figure 1

Claims (2)

[Claims] (1) Inside the direction adjustment tube in which the direction adjustment tube and the pressure rod are connected by a universal joint, a direction adjustment device formed by engaging an eccentric hole and an eccentric press rod on one side from the center point is formed double inside and outside. The center of the target is fixed to the tip of the inner tube of the propulsion tube, and light emitting diodes are attached at two places: the center point of the rear surface of the pressing rod and the correction direction point.The center of the target is aligned with the center point of the transit of the starting shaft, and the target is rotated and pressed. promote,
When the target center point deviates from the propulsion center line, the propulsion is temporarily stopped, and when the direction correction point is located on the symmetrical side away from the center point, the rotation of the inner tube is stopped, and the rotation is stopped while the propulsion is continued. It is characterized by displacing the direction correction tube, pushing and propelling it until the target center point begins to face the propulsion center line, and then rotating and pushing it while taking into account inertia, and then sequentially repeating the forward motion to propel the small diameter tube. Small diameter tube propulsion method. (2) A press rod with a direction adjustment tube with a conically pointed tip and a universal joint at the tip is fixed to the tip of the inner tube of the propulsion tube consisting of double inner and outer tubes, and the pressure rod is fixed from the center point inside the direction adjustment tube. An eccentric hole is provided on one side, and an eccentric pressing rod at the tip of the pressing rod is inserted and locked into the eccentric hole, and a light emitting diode is attached at the center point at the rear of the pressing rod and at an intermediate position on the opposite side of the eccentric pressing rod. A small diameter tube propulsion device characterized by being provided with.