JP2786541B2 - Propulsion method propulsion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion method for a propulsion method in which an underground horizontal hole in which an underground pipe is provided can be constructed from the ground without a pit for installing the propulsion equipment. A propulsion device that presses a plurality of connected propulsion pipes in the axial direction to propel the excavating head attached to the propulsion pipe on the tip side underground, with the driving direction inclined with respect to the ground. It relates to a propulsion facility for a propulsion method attached to a base.

[0002]

2. Description of the Related Art Conventionally, as a propulsion facility for a propulsion method described above, a propulsion head is conventionally formed on an inclined surface at a tip end thereof, and is rotated around the axis of the propulsion head to change the direction of the inclined surface with respect to the propulsion direction. There has been proposed an apparatus that changes the direction of the propulsion direction of a propulsion head by using earth pressure received during excavation. Then, with the propulsion method propulsion equipment installed on the ground, the propulsion pipe is driven in a direction inclined with respect to the ground, the direction of the inclined surface of the propulsion head is changed, and the propulsion direction of the propulsion head is changed. However, after changing the direction to the planned propulsion direction different from the driving direction of the propulsion pipe, the excavation can be performed in the planned propulsion direction.

[0003]

When a propulsion operation is carried out using the propulsion equipment for a propulsion method described above, a propulsion pipe following the propulsion head passes through a path excavated by the propulsion head. At the direction change point, the propulsion head and the propulsion pipe adjacent to the front-rear position or the propulsion pipes are propelled by being connected to each other in a bent position, and thus transmitted through the propulsion pipe at the rear end side. It is important that the component of the thrust directed in the direction contributes effectively for propulsion. However, in the above-described equipment, since the propulsion pipe is directly propelled into the soil, the soil is likely to be compressed or deformed in the natural state, and when the propulsion pipe is pushed in the axial direction in the bending path, There is a risk that the propulsion force will cause the propulsion tube to sink into the ground of the curved path portion and deviate from the planned propulsion path. When such a situation occurs, not only is thrust not effectively used for propulsion in the planned propulsion direction, but also a great deal of labor is required to correct the propulsion direction. Further, there is a drawback that the applied soil is limited to soft soil because the thrust is not effectively used. The present invention has been made in view of the above-mentioned circumstances, the propulsion method can be performed from the ground, and without deviating from the planned propulsion route with the propulsion,
It is an object of the present invention to provide a propulsion facility in which thrust can be effectively used for propulsion in a planned propulsion direction and the types of applicable soil can be expanded.

[0004]

In order to achieve the above object in the above-mentioned propulsion equipment for a propulsion method, a feature of the present invention is that the propulsion direction of the propulsion pipe is set at a predetermined depth position different from the driving direction. A guide cylinder for changing the direction of the planned propulsion is provided, and mounting portions for detachably connecting the guide cylinder are provided on the propulsion operation unit and the base of the propulsion device, respectively. is there. It is also useful to provide the guide cylinder with a reaction force receiving means.

[0005]

That is, a guide cylinder provided at a position where the propulsion head is changed to a predetermined propulsion direction at a predetermined depth position different from the driving direction inclining with respect to the ground is formed in a shape corresponding to the degree of the direction change. When the propulsion head and the propulsion tube are pushed in the axial direction at this change of direction, the thrust in the direction deviating from the planned propulsion direction is received by the contact between the propulsion tube and the guide cylinder, and the propulsion is performed. Since the pipe is prevented from deviating from the planned propulsion direction, the propulsion of the propulsion pipe can be changed without difficulty. And since the fixing part for fixing this guide cylinder so that connection and detachment is free is provided in each of the propulsion operation part and the base of the propulsion device, the guide cylinder is connected and fixed to the fixing part of the propulsion operation part. By activating the propulsion operation unit, the guide cylinder can be propelled into the ground, and when the deployment of the guide cylinder is completed, the guide cylinder is detached from the fixed part of the propulsion operation unit and connected and fixed to the fixed part of the base. By operating the propulsion operation unit in this state, the plurality of propulsion pipes and the propulsion head can be propelled into the ground through the guide cylinder.
In other words, in deploying the guide tube, it is possible to use a propulsion device for normally propelling the propulsion tube underground, and to propel the guide tube in the propulsion direction of the propulsion tube in the same manner as when propelling the propulsion tube. it can. In particular, when the guide cylinder is provided with a reaction force receiving means as described in claim 2, the propulsion device and the guide cylinder press the propulsion pipe in the axial direction while the propulsion device and the guide cylinder are fixed to the base respectively. Thus, the reaction force generated as a reaction of the propulsion force can be received by the reaction force receiving means via the fixed portion of the base and the guide cylinder.

[0006]

According to the present invention, the propulsion head and the propulsion pipe can be smoothly guided along the planned propulsion path without deviating from the planned propulsion path by guiding the guide tube, and the construction accuracy of the propulsion pipe can be improved and the propulsion can be performed. The thrust from the rear end side of the head propulsion can be effectively used in the planned propulsion direction, and the workability of the propulsion of the propulsion head and the propulsion pipe can be improved. In addition, by simply providing a fixed portion in the propulsion operation unit, a guide cylinder can be installed using an existing propulsion device, and as a whole, a propulsion facility for a propulsion method capable of performing propulsion work accurately and efficiently can be provided.
In particular, as described in claim 2, by providing the guide cylinder with a reaction force receiving means, the reaction force receiving means resists the reaction force and suppresses the lifting of the base due to the reaction force. It is possible to stably operate the propulsion equipment for the propulsion method, further improve the workability when propelling the propulsion pipe, and further expand the types of applicable soil.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a propulsion facility for a propulsion method for carrying out the propulsion method according to the present invention. The propulsion method equipment includes a winder 2 that winds and supports a propulsion body 1, a propulsion device 3 that feeds the propulsion body 1 from the winder 2 and pushes it into the soil, The propulsion device 3 includes a base 4 for fixedly supporting the propulsion device 3 and a guide cylinder 5 for changing and guiding the propulsion direction of the propulsion body 1. And the base 4
Is mounted and fixed on a vehicle 7 equipped with outriggers 6,
The propulsion equipment for the propulsion method, such as the winder 2, the propulsion device 3, and the base 4, is mounted on this vehicle to be movable.

As shown in FIG. 2, the propulsion body 1 includes a plurality of rigid short pipes 8 (about 100 to 500 mm in length) each having a joint 9 interposed between the plurality of rigid short pipes 8. And a propulsion head 11 attached to the distal end side of the plurality of propulsion pipes 10 #, which are flexibly connected to each other.

The propulsion head 11 is, for example, 50 to 70
mm small-diameter main body 12 and a rotary excavation unit 1 attached to a tip end of the main body 12 so as to be rotatable around a longitudinal axis X.
3 The rotary excavating part 13 includes the propulsion head 1
The outer surface thereof is formed on an inclined surface 14 so that the propulsion direction can be changed by utilizing the earth pressure received as the ground 1 is propelled underground.

The propulsion device 3 includes a propulsion operation unit 15. As shown in FIG. 3, the propulsion operating portion 15 includes a clamping clamp 16 which can clamp and release the propulsion body 1 and a propulsion cylinder 17 for reciprocating the clamping clamp 16 in the direction of propulsion of the propulsion body 1. Consisting of Then, the propulsion operation section 15 is operated to first clamp the propulsion tube 10 with the clamping clamp 16, and the clamping cylinder 16 is moved by the propulsion cylinder 17 at a predetermined stroke.
, The clamping clamp 16 opens the propulsion tube 10 and the propulsion cylinder 17 sends the clamping clamp 16 at a predetermined stroke to the propulsion tube 10 on the upstream side in the propulsion direction. Is repeated to propel the propulsion tube 10.

As shown in FIG. 1, the guide cylinder 5 includes a soil guide 18 and an air guide 19.
The underground guide 18 is formed in a shape in which an intermediate portion is curved in accordance with the degree of direction change of a portion where the direction of the propulsion pipe 10 changes in a predetermined propulsion direction different from the driving direction inclined with respect to the ground. At the time of propulsion construction, the mouth 20 at one end of the soil guide 18 is arranged in a posture penetrating the existing manhole 21 and is directed at a predetermined depth in the planned propulsion direction, and the mouth 22 at the other end is opened on the ground surface. It is arranged in a state to do. One end of the aerial guide 19 is screwed and connected to the opening 22 at the other end, and the other end of the aerial guide 19 is connected to the base 4 on the lower side of the propulsion operation unit 15. It is connected and fixed to the fixing part 23.

The clamping clamp 16 of the propulsion operating section 15 is configured to be able to clamp and open the guide cylinder 5 so that the guide cylinder 5 can be grounded similarly to the propulsion pipe 10 by the propulsion operating section 15. It is configured so that it can be propelled in the middle.
That is, as shown in FIG. 3, similarly to the propulsion operation of the propulsion pipe 10 by the clamping clamp 16 and the propulsion cylinder 17 serving as a fixing portion for fixing the guide cylinder 5 so that the guide cylinder 5 can be connected and detached, the clamping cylinder 16 guides the guide cylinder 5. 5 is clamped, and the clamping clamp 16 is sent by the propulsion cylinder 17 at a predetermined stroke to the lower side in the propulsion direction. Next, clamping clamp 1
6 releases the guide tube 5 and the propulsion cylinder 1
7, the clamping clamp 16 is sent at a predetermined stroke to the upper side in the propulsion direction. These series of operations are repeated to propel the guide cylinder 5.

Then, as shown in FIG. 1, after the guide cylinder 5 is arranged at a predetermined position, the other end of the air guide 19 opposite to the one end to which the air guide 19 is screwed and connected is connected. It is connected and fixed to the fixing part 23 of the base 4. Then, the propulsion body 1 is propelled into the soil by the propulsion device 3 through the guide cylinder 5.

Therefore, according to the propulsion method according to the present invention,
When the propulsion unit 1 is propelled by the propulsion device 3, the propulsion unit 1 is guided into the soil by the air guide 19 and the underground guide 18, and when the propulsion unit 1 propells the underground guide 18,
When the propulsion body 1 is pushed in the axial direction at a point where the direction of the propulsion body 1 changes in the planned propulsion direction different from the driving direction inclined with respect to the ground, the propulsion force in the direction deviating from the planned propulsion direction Is suppressed by receiving the propulsion body 1 by contact with the underground guide 18, so that the propulsion body 1 bends in a predetermined propulsion direction different from the driving direction inclined with respect to the ground, depending on the degree of direction change. The change in direction is guided without difficulty along the shape of the soil guide 18. in addition,
The guide tube 5 can be installed also as a propulsion facility for propelling the propulsion body 1, and the installation of the guide tube 5 can be facilitated.

Further, a reaction force receiving member 24 as a reaction force receiving means is attached in the middle of the underground guide 18. The reaction force receiving member 24 is a plate having a flat surface, and the flat surface is brought into contact with the side surface of the manhole 21. Therefore, the reaction force accompanying the propulsion of the propulsion body 1 is transmitted from the propulsion operation unit 15 to the reaction force receiving device 24 through the propulsion device 3, the base 4, and the guide tube 5 from the fixing portion 23 of the base 4. . That is, the reaction force receiving member 24 is configured to transmit the reaction force accompanying the propulsion of the propulsion body 1 to the side surface of the manhole 21 so that the reaction force accompanying the propulsion of the propulsion body 1 is supported by an easy means. Has become.

The guide cylinder 5 is not limited to a combination of the underground guide 18 and the aerial guide 19 as shown in the above-described embodiment. When the distance between the propulsion device 3 and the ground is short, as in the case of performing the propulsion construction of No. 1, the aerial guide 19 may be omitted, and the guide cylinder 5 may be configured only by the underground guide 18. The arrangement of the soil guide 18 is as follows.
It is sufficient that the propulsion body 1 is located at a position where the planned propulsion direction is changed at a predetermined depth different from the driving direction of the propulsion body 1 on the ground. It is also conceivable to install the existing manhole 21 without using it. Further, the method of embedding the underground guide 18 as well as a method of manually embedding it in the ground other than using the propulsion device 3 can be considered. Also, the reaction force receiver 24
May be omitted. In short, the arrangement and shape of the guide cylinder 5 and the method of burying the soil guide 18 are not a problem as long as the guide body 5 can be smoothly guided in the planned propulsion direction different from the driving direction inclined with respect to the ground of the propulsion body 1.

[Other Embodiments] The reaction force receiving means is not limited to the one described in the above embodiment, but may be variously considered. The reaction force receiving means shown in FIG. 4 is obtained by fixing a plate-shaped reaction force receiving device to the outer surface of the underground portion of the guide cylinder 5 and can be used in a situation where there is no existing manhole. That is, the reaction force accompanying the propulsion of the propulsion pipe is received directly on the ground via the receiving member 24,
Can be done. The reaction force receiving means 24 shown in FIG. 5 fixes a reaction force receiving member having a shape in which an intermediate portion is bent at a substantially right angle in a side view, and fixes an exposed portion of the guide cylinder 5 in the manhole 21 and one end thereof. The other end is the manhole 2
The reaction force accompanying the propulsion of the propulsion pipe is transmitted to the side surface of the manhole 21 from the reaction force receiving member, and the reaction force can be received through this side surface.
In the example shown in FIG. 6, a pile 24 a that can be driven into the ground from the ground surface and a pile attached to the outer surface of the underground part of the guide cylinder 5 are replaced with a structure in which a reaction force receiving means is provided as the reaction force receiving means 24. The pile 24a is driven from the ground surface, and the tip of the pile penetrates through the lock ring 24b, so that the reaction force caused by the thrust of the propulsion pipe is applied to the lock ring 22b. By penetrating the pile 24b, the reaction force accompanying the thrust of the propulsion pipe is transmitted to the pile 24a via the locking ring 24b, and is supported on the ground through the entire underground portion of the pile 24a. ing. FIG.
In the example shown in FIG. 5, a claw-like member swingable between an upright posture shown by a two-dot chain line in the figure protruding from the outer peripheral wall of the guide cylinder 5 and an inverted posture shown in a real battle in the figure along the outer peripheral wall of the guide cylinder 5. The reaction force receiving means 24 is formed by attaching a plurality of the above-mentioned parts around the guide tube 5 with the free end portions facing the propulsion upper side. In the case of this configuration, when the guide cylinder 5 is propelled underground using the propulsion device 3 as in the above-described embodiment, the guide cylinder 5 is propelled more than a predetermined underground burial position, Thereafter, it is pulled back toward the propulsion side, and the claw-like member is rotated to cause the claw-like member to be in the upright posture.Therefore, the reaction force is transmitted to the ground in a state where the free end is directed outward. The ground can receive the reaction force. In FIG. 7, two sets of reaction force receiving means configured as described above are provided along the longitudinal direction of the guide cylinder 5, but the number of sets of the reaction force receiving means is not specified.
Although four examples of the reaction force receiving means have been described above, these are merely representative, and there may of course be various other structures.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is a diagram showing a propulsion facility for a propulsion method according to the present invention.

FIG. 2 is a side view of a propulsion body.

FIG. 3 is a plan view of a propulsion operation unit.

FIG. 4 is a side view of a reaction force receiving means of another embodiment.

FIG. 5 is a side view around a reaction force receiving means of another embodiment.

FIG. 6 is a side view of a reaction force receiving means of another embodiment.

FIG. 7 is a side view of a reaction force receiving means of another embodiment.

[Explanation of symbols]

 Reference Signs List 3 propulsion device 4 base 5 guide cylinder 10 propulsion pipe 11 propulsion head 15 propulsion operation unit 24 reaction force receiving means

──────────────────────────────────────────────────続 き Continuing from the front page (72) Takashi Oshima 1-1-1 Hama, Amagasaki-shi, Hyogo Pref. Kubota Technology Development Laboratory Co., Ltd. (56) References JP-A-2-161095 (JP, A) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) E21D 9/06 311

Claims (2)

(57) [Claims] 1. A plurality of propulsion tubes (10), which are flexibly connected to each other, are pressed in the axial direction of the propulsion tubes (10), and the propulsion tubes (10) on the distal end side, and a propulsion head (11) for excavation attached to the (‥).
The propulsion device (3) for underground propulsion is mounted on the base (4) with the driving direction inclined to the ground, and the propulsion direction of the propulsion pipe (10) is changed. The propulsion device is provided with a guide tube (5) for changing to a planned propulsion direction at a predetermined depth position different from the driving direction, and an attachment portion for detachably connecting the guide tube (5). (3) Propulsion operation unit (1
5) A propulsion facility for a propulsion method provided on the base and the base. 2. A reaction force receiving means (2) is provided on said guide cylinder (5).
The propulsion facility for a propulsion method according to claim 1, further comprising (4).