JPH0742486A - Thrusting device - Google Patents

Abstract

PURPOSE:To increase workability, by dividing a holding member of thrusting pipes flexibly connected along the longitudinal direction into two parts and providing a clamp cylinder which can be changed over to either holding action or releasing action of the thrusting pipes arranged between both divided members. CONSTITUTION:A thrusting body 2 is pushed into the ground through an underground guide pipe 1 provided in the underground by a thrusting equipment A installed on the ground. A thrusting pipe 7 is placed on the recession 34b of the lower holding member 19b in the removed state of the upper holding member 19a of the thrusting device 10 and the upper holding member 19a is positioned thereon to unify both holding members 34. Next, the clamp cylinders 36 are protruded to the thrusting pipe 7 side to hold and fix the thrusting pipe 7 by respective chuck pieces 35. In this state, thrusting cylinders 24 are driven reciprocatingly to thrust the thrusting body 2 and draw it for boring. In this way, the handling of the upper divided member 19a in the holding members 19 composed of both upper and lower divided members 34 becomes easy and the thrusting pipe is easily attached or detached.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a holding member which can hold a propulsion pipe continuously bent along the longitudinal direction.
The present invention relates to a propulsion device provided with a propulsion device main body for driving the clamping member to move back and forth along the longitudinal direction of the propulsion pipe in a state of being clamped by the clamping member.

[0002]

2. Description of the Related Art Conventionally, as a propulsion device of this type, FIG.
As shown in FIG. 2, the propulsion device main body 51 is provided on the base 50, and the front and rear of the two pairs of brackets 52 are provided upright at the front, rear, left and right ends of the propulsion device main body 51 so as to face each other in the front-back direction. To each of them, a propulsion cylinder 54, which is capable of driving the clamping member 53 forward and backward, is separately attached, and a clamping member 53 having an upper and lower two-divided configuration is attached to both the right and left propulsion cylinders 54, so as to constitute the clamping member 53. , 53b of the upper split member 53a, the push-pull tube 55 in a state of being arranged between the split members 53a, 53b is moved in the radial direction to switch between a clamped state and a non-clamped state. 56 is provided and the propulsion pipe 55 is arranged between the two divided members 53a and 53b, the upper divided member 53a is removed and the lower divided member 5 is removed.
After disposing the propulsion pipe 55 on the 3b, the upper dividing member 53
There was one that was fixed by covering a.

[0003]

According to the above-mentioned conventional propulsion device, the clamp cylinder 56 is provided on the upper dividing member 53a which must be removed to clamp the propulsion pipe 55 by the clamping member 53. Therefore, in addition to the weight of the upper split member 53a, the weight of the clamp cylinder 56 and the driving hydraulic hose connected to the clamp cylinder 56 is also added. It is not easy to handle, and it takes time to attach and detach the propulsion pipe, resulting in inefficiency.

Therefore, in view of the above drawbacks, an object of the present invention is to provide a propulsion device in which the propulsion pipe can be easily attached and detached.

[0005]

In order to achieve this object, the propulsion device of the present invention is characterized in that it has two upper and lower clamping members that can clamp the propulsion pipes that are bent continuously along the longitudinal direction. A clamp cylinder, which is formed in a split state and is capable of switching between a holding state and a non-holding state in the radial direction with respect to the propulsion pipe arranged between the split members, is provided in the lower split member. There is a place.

[0006]

According to the characteristic configuration of the propulsion device of the present invention,
Since the sandwiching member is divided into upper and lower halves and the clamp cylinder is provided on the lower dividing member, the weight of the upper dividing member can be made lighter than that of the conventional one, and it is easy to handle. At the same time, it becomes possible to easily and efficiently attach and detach the propulsion pipe.

Further, since the clamp cylinder, the hydraulic hose for driving the clamp cylinder, etc. are located under the sandwiching member, they are hard to be exposed on the surface of the propulsion unit body,
It can prevent the hydraulic hose etc. from interfering with work,
Furthermore, since the hydraulic hose and the like are hard to be exposed on the surface of the propulsion device main body, it is possible to prevent the hydraulic hose and the like from being damaged or damaged even if another object hits the propulsion main body. It will be possible.

[0008]

As described above, according to the propulsion device of the present invention, the handling property of the upper dividing member in the holding member composed of the upper and lower dividing members is improved, so that the propulsion pipe can be easily attached and detached and efficiently. It becomes possible to implement the function, and further, a protection function for the hydraulic hose for driving the clamp cylinder can be expected, and it becomes possible to improve both propulsion workability and durability of the propulsion device.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 3 and 4 show a situation in which the propelling body 2 is propelled by the propulsion facility A installed on the ground through the underground guide pipe 1 provided in the ground.

The subterranean guide tube 1 is made of metal and has an inner diameter larger than the outer diameter of the propulsion body 2 so that the propulsion body 2 can be inserted therein and guided in a predetermined direction. On the outer peripheral surface of the underground guide tube 1, a brim-shaped mounting portion 1a for fixing the underground guide tube 1 to the ground surface is integrally provided. By fixing the mounting portion 1a to the ground surface with a mounting tool,
The underground guide pipe 1 can be stably installed.
Further, the propulsion body 2 is configured by providing a propulsion head 8 for boring an underground hole at the tip of a plurality of propulsion pipes 7 which are continuously connected so as to be bendable in the longitudinal direction, and the propulsion head 8 is provided in the inner space. A hose, a cable, and the like for controlling the drive of No. 8 are installed.
Therefore, by pushing the propulsion pipe 7 and the propulsion head 8 which are connected in the longitudinal direction from the propulsion equipment A on the ground through the guide pipe 1, the tip of the propulsion body 2 passes through the guide pipe 1 and an appropriate propulsion direction. It is possible to carry out underground propulsion in the state of being directed to.

Next, the propulsion equipment A will be described. A horizontal winding drum 9 around which the propelling body 2 can be wound is provided, and the propelling body 2 unwound from the winding drum 9 around which the propelling body 2 is wound. A propulsion device 10 that can be grasped and pushed into the ground is provided. Each of the winding drum 9 and the propulsion device 10 has a crawler 1 which is an example of a self-propelled device.
1a and 11b are attached.

On the crawler 11a of the winding drum 9,
A lubricant unit capable of agitating and feeding a lubricant for reducing the friction between the first hydraulic unit 12 for driving the tip of the propulsion head 8 to rotate and to move back and forth and the soil due to the propulsion of the propelling body 2. And 13 are mounted. The crawler 11b of the propulsion device 10 is equipped with a second hydraulic unit 14 for gripping and retracting the propelling body 2 of the propulsion device 10, and the feeding or winding operation of the winding drum 9 is performed. A centralized operation device 17 that can control the driving operation of the propulsion device 10 and the like is mounted. Further, between the both crawlers 11, the drive portion of the winding drum 9 and the centralized operation device 1 are provided.
A cable 18 for electrically connecting 7 and the propelling body 2 fed from the winding drum 9 are arranged in a stretched state. Therefore, even in the case of propulsion work on a complex-shaped site, the winding drum 9 and the propulsion device 10 can be freely moved to positions suitable for the site environment by the crawlers 11a and 11b. , The machine can be easily arranged, and after the machine is set, the centralized operation device 17 mounted on the crawler 11b of the propulsion device 10 confirms the propulsion state by the propulsion device 10 and synchronizes with the propulsion cycle. The propelling body 2 can be paid out from the winding drum 9 by one operator. Further, since the hydraulic units 12 and 14 are separately mounted for both crawlers 11a and 11b, it is not necessary to connect the hydraulic hoses between the crawlers 11 each time the equipment is installed, and the oil leak does not occur. Can be prevented and the time required for preparation work can be shortened.

Explaining the propulsion device 10, as shown in FIGS. 5 and 6, a holding member 19 for holding the propulsion body 2 is provided, and the propulsion tube 7a is held in the holding member 19 in the longitudinal direction. A propulsion device main body 20 for driving the clamping member 19 to move back and forth is provided along with a base device 22 having a direction adjusting mechanism 21 capable of adjusting the direction of the propulsion device main body 20.

The propulsion unit main body 20 includes a plate-shaped substrate 23.
And a pair of propulsion cylinders 24, which are movable back and forth while supporting both sides of the holding member 19, are provided on the base plate 23. The propulsion cylinder 24 is
A cylinder body 24a to which the holding member 19 is attached, and a cylinder rod 24b penetratingly supporting the cylinder body 24a in a front-rear drivable state are formed. The cylinder rod 24b is provided over the pair of front and rear cylinder supporting brackets 25.
Has both ends fixed. Each of the cylinder supporting brackets 25 is separately provided with a lifting supported portion 27 to which a lifting hook for lifting the propulsion device 10 can be attached and detached, and each of the supported portions 27 of both front end side cylinder supporting brackets 25a. A length adjusting rod 28 is provided which is capable of adjusting the vertical positions of the front and rear supported portions 27. The length adjusting rod 28 has locking portions 28a, 28 at both ends.
b is provided separately for each of the supported portions 27 of the front-end side cylinder supporting brackets 25a.
The other locking portion 28b is supported by the rod locking portion 23a provided on the substrate 23. A hydraulic hose for driving the propulsion cylinder 24 is provided at the base end of one of the cylinder support brackets 25b on the rear end side, and
An insertion hole H through which a hydraulic hose for driving a clamp cylinder 36 provided in a holding member 19 described later can be inserted is provided.
A cable connector electrically connected to the stroke detection sensor of the propulsion cylinder 24 is attached to the base end of the other cylinder support bracket 25b at the rear end.

The base device 22 is provided with a base portion 29 on which the substrate 23 is placed and which is detachably connected, and the propulsion unit main body 20 installed on the base portion 29 is vertically swung. A direction adjusting mechanism 21 for movably adjusting is provided. A bracket portion 30 for connecting one end portion of the underground guide tube 1 is provided at the front end portion of the base portion 29. The direction adjusting mechanism 21 includes a pivotal connecting portion 29a that pivotally supports the base 29 with respect to the crawler 11b and a hydraulic cylinder for direction adjustment provided from the base 29 to the crawler 11b. Three
It is possible to swing the base 29 and the propulsion unit main body 20 above the base 29 by expanding and contracting the hydraulic cylinder 31. The orientation of 20 can be adjusted.

Next, the connection state of the base device 22 and the propulsion unit body 20 will be described.
Is mounted on the base 29 with the bracket 25a of the propulsion unit main body 20 fitted to the bracket 30 of the base 29, and the bracket 30 and the bracket 25a are connected by a bolt. It is detachably connected by 32. In addition, as a secondary connection, the base 2
The substrate 23 is joined to the substrate 9 by bolts 33. Therefore, as shown in the figure, from the state where the propulsion device main body 20 is tilted and the propulsion device 10 is capable of ground propulsion,
By simply removing the bolts 32 and 33, the base device 2
It becomes possible to easily separate the propulsion device main body 20 from 2, and set the separated propulsion device main body 20 in the underground pit as it is, and carry out pit propulsion in which the propulsion body 2 is sandwiched and propelled in the horizontal direction. It becomes possible. Further, when separating the propulsion device main body 20 from the base device 22, the supported portion 27 provided on the bracket 25b at the rear end of the propulsion device main body 20 and the upper end of the rod locked to the front end bracket 25a. The hooks for hanging are hooked respectively on the locking portions 28b of the propulsion unit 20 to lift them.
Can be separated without changing the posture, and the propulsion device main body 20 can be prevented from sliding sideways during lifting.

Next, the details of the sandwiching member 19 will be described. As shown in FIGS. 1 and 2, the sandwiching member 19 is divided into upper and lower halves, and an upper sandwiching member 19a corresponding to an upper split member.
And a lower holding member 19b corresponding to a lower split member. Both sides of the lower holding member 19b are separately attached to the pair of cylinder bodies 24a, and are formed so as to be movable back and forth together with the cylinder body 24a. Further, the upper holding member 19a is the lower holding member 19b.
It is bolted on and off freely. The upper and lower sandwiching members 19a and 19b are provided with recesses 34a and 34b, respectively, which face each other in a combined state, and the propulsion pipe 7 can be disposed between the recesses 34. A plurality of chuck pieces 35 are arranged in each of the recesses 34 so as to be held in contact with each other along the outer peripheral surface of the propulsion pipe 7, and the chuck pieces 35a are disposed in the recesses 34a of the upper holding member 19a. Are fixed to the upper clamping member 19a by bolts. Further, the chuck piece 35b located in the recess 34b of the lower holding member 19b is arranged so as to be able to extend and retract in the radial direction with respect to the propulsion pipe 7 in a state where it is arranged between the both holding members 19. Further, the lower holding member 1
A clamp cylinder 36 is attached to 9b so that the chuck piece 35b can be driven to move in and out in the radial direction of the propulsion tube 7 and can be switched between a clamped state and a non-clamped state with respect to the propulsion tube 7. The clamp cylinder 36 is connected to the second hydraulic unit 14 by a hydraulic hose so that the clamp cylinder 36 can be driven to move in and out by the hydraulic pressure from the second hydraulic unit 14.

According to the propulsion device 10 of this embodiment, the propulsion tube 7 is placed in the recess 34b of the lower clamping member 19b with the upper clamping member 19a removed, and the upper clamping member 19 is placed on the propulsion tube 7.
It is possible to sandwich and fix the propulsion pipe 7 by each chuck piece 35 by covering both the clamping members 34 by covering a and then projecting the clamp cylinder 35 toward the propulsion pipe 7 side. , The propulsion cylinder 2 by moving the propulsion cylinder 24 back and forth.
Can be driven or pulled out.

[Other Embodiment] Another embodiment will be described below.

The holding member 19 is not limited to the upper and lower separate members described in the above embodiment, and may be swingably joined via a hinge, for example. In short, it suffices if the lower holding member 19b is provided with the clamp cylinder 35, and these are collectively referred to as a holding member.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a rear sectional view showing a propulsion device according to an embodiment.

FIG. 2 is a front view of the propulsion device according to the embodiment when viewed from the front.

FIG. 3 is a side view showing the propulsion equipment of the embodiment.

FIG. 4 is a plan view showing the propulsion equipment of the embodiment.

FIG. 5 is a vertical sectional view showing a propulsion device according to an embodiment.

FIG. 6 is a top view showing the propulsion device of the embodiment.

FIG. 7 is a partially cutaway front view showing a conventional propulsion device.

[Explanation of symbols]

 7 Propulsion Pipe 19 Clamping Member 19a (Upper) Dividing Member 19b (Lower) Dividing Member 20 Propulsion Machine Main Body 36 Clamp Cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazunori Tsujimoto 1-1-1, Hama, Amagasaki City, Hyogo Prefecture Kubota Technology Development Laboratory Co., Ltd.

Claims (1)

[Claims] 1. A holding member (19) capable of holding a propulsion pipe (7) continuously bent along the longitudinal direction is provided, and the propulsion pipe (7) is held by the holding member (19). )
A propulsion device provided with a propulsion device body (20) for driving the holding member (19) to move back and forth along the longitudinal direction of the holding member (19), wherein the holding member (19) is divided into upper and lower parts. A clamp cylinder (36) that can be switched between a clamped state and a non-clamped state by allowing the propulsion pipe (7) arranged between the members (19a) and (19b) to retract in the radial direction thereof.
Is provided on the lower split member (19b).