JPH09158675A - Propelling mechanism of excavation propelling device of steel pipe or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform excavation propelling-burying work of a steel pipe or the like even from inside a departing pit having a limited small space. SOLUTION: A moving stand 4 is provided on a rectangular rail stand 3 so as to be freely movable forward and backward in the lengthwise direction of the rail stand 3, on the one hand, a rectangular relay stand 5 is provided on an under surface of the moving stand 4 so as to be freely movable forward and backward in the lengthwise direction of the rail stand 3, and a hydraulic cylinder 6 is connected and installed between the relay stand 5 and a rear end part of the rail stand 3. Pin holes are bored at the same intervals in rails 3a and 3a of the rail stand 3 and on the left and right side edges of the relay stand 5, on the one hand, pin holes are bored in the moving stand so as to be opposed to the pin holes, and connecting pins 11 are fitted to and inserted into the pin holes of the rail stand 3 and the moving stand 4 and the pin holes of the moving stand 4 and the relay stand 5, and are provided so as to be freely pulled out, and the rail stand 3 and the moving stand 4, and the moving stand 4 and the relay stand 5 are provided so as to be freely connected to and released from each other by fitting, inserting and pulling out the connecting pins 11.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] In a machine for removing steel pipes, which comprises a rotating mechanism for rotating and driving a steel pipe and the like, and a propulsion mechanism for propelling a moving table on which the rotating mechanism is installed by a hydraulic cylinder, mainly in roads in urban areas. Providing a propulsion mechanism for steel pipe cutting equipment that enables efficient work for digging and burying steel pipes even from inside the start pit in a small space, such as a sidewalk, residential area, or between buildings. .

[0002]

2. Description of the Related Art A propulsion mechanism 102 in a conventional apparatus for cutting a steel pipe or the like has a movable base 104 for mounting a rotating mechanism 101 mounted on a rail of a rectangular rail base 103 so as to move forward and backward. The moving table 104 and the rail table 10
Since the hydraulic cylinder 105 is simply connected and installed between the rear end portions of the third hydraulic cylinder 105, the movable distance of the movable base 104 is, of course, the extension of the rod 106 of the hydraulic cylinder 105.
It was limited to the shrinkage dimension. (See Fig. 8)

On the other hand, in recent years, steel pipes, pilots, cutting shafts, etc. (hereinafter steel pipes, etc.) have been cut from inside a starting pile in a small space such as a road, sidewalk, residential area, or between buildings in a city area. Since it is becoming more and more necessary to proceed with burial and burial work, it is necessary to make the most of the small space inside the starting pit to carry out the work. In the advancing device, in particular, the entire length of the rail base of the propulsion mechanism (usually installed in the start pit) is utilized without waste so that the movable base can be propelled and moved, and as a result, the length of one unit can be as long as possible. It has been a subject to make it possible to use long steel pipes, to reduce the number of welding and the number of welding, that is, the work efficiency, that is, the connection of steel pipes and the like.

However, since the conventional propulsion device 102 can move only within the range of the extension / contraction dimension of the rod 106 of the hydraulic cylinder 105 as described above, the rod 106 is not movable.
If the hydraulic cylinder 105 having a short extension and contraction dimension is used, the propulsion distance of the moving table 104 is small, so that the dimensions of the steel pipe and the like must be shortened.

However, when the hydraulic cylinder 105 having a long dimension of extension and contraction of the rod 106 is used, the space in the starting pit 107 is small so that it is supported and the extension dimension of the rod 106 cannot be effectively utilized.

As a result of the above, the hydraulic cylinder 105 having a short dimension within the space of the starting pile 107 is used, the short travel of the movable table 104 is repeated by repeating the short stroke, and the short dimension corresponding to the distance is used. There is a problem that the steel pipes, etc. are frequently connected, welded, machined and buried, which requires a large amount of means and the work efficiency is low.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a movable base is installed on a rail base and the movable base is moved and propelled by a hydraulic cylinder. By installing a hydraulic cylinder between this relay stand and rail stand, and changing the connecting position of the moving stand and relay stand each time the rod of the hydraulic cylinder is extended, the moving stand at the previous forward movement position can be moved to the next hydraulic By repeating the forward movement with the extension of the lot of cylinders, the movable base can be moved and propelled over the entire length from the rearmost part to the frontmost part of the rail base by changing the connection number of the movable base and the relay base. Then, the above-mentioned conventional problems are solved.

[0008]

That is, the present invention relates to a propulsion mechanism including a rail base, a moving base, and a hydraulic cylinder for a rotating mechanism for rotating and driving a steel pipe having a bit at its tip, a pilot pipe, a shaft for shafting, and the like. It is installed on the moving table, and the moving table is propelled and retracted by a hydraulic cylinder, and by repeatedly rotating and propelling the steel pipes and the like, the steel pipes are connected one after another and the steel pipe is cut to the target point. In the machine for removing steel pipes,

On a rectangular rail stand, there is provided a moving stand on which a rotating mechanism is installed so as to be able to move forward and backward in the longitudinal direction of the rail stand, while a lower surface of the moving stand is provided with a rectangular relay stand along the long side of the rail stand. Prepared to move back and forth in the direction,
A hydraulic cylinder is connected and installed between the relay stand and the rear end of the rail stand,

While pin holes are formed at the same intervals on the left and right sides of the rail and the relay stand of the rail base, pin holes are formed in the movable base so as to face the pin holes, and pin holes of the rail base and the movable base are formed.
Also, a connecting pin can be fitted into and removed from the pin holes of the movable table and the relay table, and the rail table and the movable table, and the movable table and the relay table can be connected and released by fitting and withdrawing the connecting pin. The problem has been solved by the propulsion mechanism of the thrusting device such as a steel pipe.

[0011]

Embodiments of the present invention will now be described with reference to the drawings (FIGS. 1 to 7).
Explaining about, the rotation mechanism that drives the steel pipe equipped with a bit at the tip, the pilot pipe, the shaft for cutting, etc., to rotate,
It is installed on a moving table of a propulsion mechanism consisting of a rail table, a moving table, and a hydraulic cylinder, and the moving table is propelled by a hydraulic cylinder so that it can be moved backward and forward. In a machine such as a steel pipe that is connected one after another to machine to a target point,

On the rectangular rail stand 3, a moving stand 4 having the rotating mechanism 1 installed is provided so as to be movable forward and backward along the longitudinal direction of the rail stand 3, while a rectangular relay stand is provided on the lower surface of the moving stand 4. 5 is provided so as to be movable back and forth in the longitudinal direction of the rail base 3, and a hydraulic cylinder 6 is connected and installed between the relay base 5 and the rear end of the rail base 3.

On the left and right sides of the rails 3a, 3a of the rail base 3 and the relay base 5, pin holes 8 and 9 are formed at the same intervals, while on the moving base, pin holes 10 are provided in opposition to the pin holes 8 and 9. The rail base 3 and the movable base are provided so that the connection pins 11 can be freely inserted into and removed from the pin holes 8 and 10 of the rail base 3 and the movable base 4, and the pin holes 10 and 9 of the movable base 4 and the relay base 5. 4 and the movable table 4 and the relay table 5 are connected to each other by fitting and withdrawing the connecting pin 11 so as to be freely opened and closed to configure the propulsion mechanism 2 of the cutting device A such as a steel pipe.

A more specific structural example of the propulsion mechanism 2 of the present invention will be described. The parallel rails 3a, 3a of the rectangular rail base 3 and the outer groove rails 12, 12 on the lower surface of the moving base 4 are described.
And the movable stand 4 is installed so as to move forward and backward along the longitudinal direction of the rail stand 3, while the inner groove rails 13, 13 on the lower surface of the move stand 4 are provided with right and left side portions of the rectangular relay stand 5. And the relay stand 5 is also installed so as to be movable back and forth in the longitudinal direction of the rail stand 3, and a hydraulic cylinder is provided between a part of the lower surface of the relay stand 5 and the rear end of the rail stand 3. 6 is connected and installed by receiving pins 14 and 15,

Pin holes 8a to 8b on the rails 3a and 3a of the rail base 3 and on the left and right side portions of the relay base 5 at the same set intervals.
9a to 9c are opened, while the rear end portion of the moving table 4 is provided with pin holes 10a and 10b facing the pin holes 8 and 9, respectively.

The first pin hole 10 of the movable table 4 and the relay table 5
a and 9a are connected by a connecting pin 11, and the moving base 4 is propelled from position to position by extension of the rod 7 of the hydraulic cylinder 6 (FIG. 2 → FIG. 4), and at the position, the connecting pin 11 is pulled out and the moving base is moved. 4 and the second pin hole 8b of the rail base 3;
9b is connected by a connecting pin 11 (moving table remains in position)
After that, the relay stand 5 is retracted by the contraction of the rod 7 of the hydraulic cylinder 6.
To the original position (Fig. 4 → Fig. 5),

A connecting pin 11 for connecting the movable table 4 and the rail table 3
And the second pin holes 10a and 9b of the movable table 4 and the relay table 5 are connected by the connecting pin 11, and the hydraulic cylinder 6
The extension of the rod 7 of FIG.
(Fig. 6), after removing the connecting pin 11 at that position and connecting the third pin holes 9c and 8c of the movable base 4 and the rail base 3 with the connecting pin 11 (the movable base remains at the position), the hydraulic pressure is applied. By retracting the rod 7 of the cylinder 6, the relay stand 5 is returned to its original position,

By repeating the above operation, the moving table 4 is sequentially propelled from the position to the subsequent positions (eg, position, FIG. 7), and the rotating mechanism having the steel pipes and the like on the moving table 4 is attached by the propulsion. 1 is a propulsion mechanism 2 of a cutting device A for a steel pipe or the like for propelling the steel pipe 1 so as to cut the steel pipe or the like.

In the illustrated embodiment, the relay stand 5 and the hydraulic cylinder 6 are used.
The parallel rails 3a, 3 of the rail base 3 on the lower surface of the moving base 4,
It is installed between a and a so that the entire length of the rail base 3 can be used as a moving space for the moving base 4.

The size and number of pin holes 8 and 9 set on the rails 3a and 3a of the rail base 3 and on the right and left sides of the relay stand 5 at the same set intervals are not limited to the illustrated example. This is optional. For example, when it is necessary to finely adjust the propulsion dimension of the moving table 4 (rotating mechanism 1) for each step, the setting interval is reduced and the number of holes is increased.

Further, the positions and the number of the pin holes 10 of the movable table 4 are not limited to the examples shown in the figures, and are arbitrary and are set in relation to the rotation mechanism and the hydraulic cylinder.

[0022]

[Effect] A relay stand for relaying the rail stand and the moving stand is provided, the relay stand and the rail stand are connected by a hydraulic cylinder, and the moving stand is connected through the relay stand every time the rod of the hydraulic cylinder reciprocates between extension and contraction. Since the (rotation mechanism) can be moved stepwise,

It is possible to use a long hydraulic cylinder having a long rod expansion / contraction dimension.

As a result, the movable table (rotating mechanism) can be moved and propelled in the long dimension by one extension of the rod of the hydraulic cylinder.

In addition, as described above, since the movable table can be moved stepwise by the action of the relay table, for example, the movable table can be moved and propelled over the entire length from the rearmost part to the frontmost part of the rail table fully installed in the starting pit. , It is possible to make the most effective use of the inside of the launch pit in a small space.

As a result of the above, it is possible to use steel pipes each having a long dimension, so that the steel pipes can be propelled and connected when they are buried.
The number of times of welding or the like can be reduced to save the labor and time required for them, that is, the overall work efficiency can be significantly improved.

Since the base stand, the moving stand, and the relay stand are connected, fixed, and releasably provided by the connecting pins, for example, the rail stand can be tilted (and therefore the moving stand and the like can be tilted) to perform the work. Even in such a case, there is an advantage that the work can be performed without fear of slipping and dropping by connecting and fixing the connecting pins at any place.

[Brief description of the drawings]

FIG. 1 is a central cross-sectional front view of an embodiment of a propulsion mechanism for a retraction device according to the present invention.

FIG. 2 is a plan view.

FIG. 3 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 4 is a view showing a state where the movable table is moved from the position shown in FIG. 2 to the position.

FIG. 5 is a view showing a state in which the movable table is stopped at a position with a connecting pin and the relay table is returned to the original position.

FIG. 6 is a view showing a state where the movable table is moved from the position shown in FIG. 5 to the position.

FIG. 7 is a view showing a state where the movable table is moved from the position shown in FIG. 6 to the position.

FIG. 8 is an explanatory view of a conventional device.

[Explanation of symbols]

 A Cutting device 1 Rotation mechanism 2 Propulsion mechanism 3 Rail stand 3a Rail 4 Moving stand 5 Relay stand 6 Hydraulic cylinder 7 Rod 8, 8a-8c Pin hole (rail stand) 9, 9a-9c Pin hole (relay stand) 10, 10a, 10b Pin hole (moving base) 11 Connecting pin 12 Outer groove rail 13 Inner groove rail 14, 15 Receiving pin a Conventional cutting device 101 Rotating mechanism 102 Propulsion mechanism 103 Rail base 104 Moving base 105 Hydraulic cylinder 106 Rod 107 Starting Pit

Claims (4)

[Claims] 1. A rotation mechanism for rotating and driving a steel pipe having a bit at its tip, a pilot pipe, a shaft for shafting, etc. is installed on a moving base of a propulsion mechanism including a rail base, a moving base and a hydraulic cylinder, The moving table is propelled and retracted by a hydraulic cylinder, and by repeatedly rotating and propelling the steel pipes and the like, the steel pipes are connected one after another and the steel pipes are carved to a target point. In the device, a moving stand with a rotating mechanism installed on a rectangular rail stand is provided so as to be able to move forward and backward in the longitudinal direction of the rail stand, while a rectangular relay stand is provided on the lower surface of the moving stand along the long side of the rail stand. A hydraulic cylinder is installed between the rear end of the relay stand and the rear end of the rail stand so that it can be moved back and forth in any direction, and pin holes are formed on the rail of the rail stand and the left and right sides of the relay stand at equal intervals. , The pin hole on the moving table Pin holes are made opposite to each other, and continuous pins can be inserted into and removed from the pin holes of the rail stand and the moving stand, and the pin holes of the moving stand and relay stand. A propulsion mechanism for a retraction device such as a steel pipe, in which a table is connected and released by fitting and withdrawing the connecting pin. 2. A parallel rail of a rectangular rail base is engaged with an outer groove rail on the lower surface of the moving base so as to move the moving base forward and backward in the longitudinal direction of the rail base while the lower surface of the moving base is provided. The left and right side portions of the rectangular relay stand are engaged with the inner groove rails, and the relay stand is also installed so as to be movable back and forth in the longitudinal direction of the rail stand. Install hydraulic cylinders between the rear ends of the rails with receiving pins, and make pin holes on the rail of the rail base and on the left and right sides of the relay base at the same set intervals, while at the rear end of the moving base, It is a propulsion mechanism for a machine such as a steel pipe that has a pin hole facing the pin hole. It connects the first pin hole of the moving stand and the relay stand with a connecting pin,
The extension of the rod of the hydraulic cylinder propels the movable table from position to position, at which position the connecting pin is pulled out, and the second pin hole of the movable table and the rail base is connected by the connecting pin (the movable table remains at the position. After that, the relay stand is returned to its original position by contraction of the rod of the hydraulic cylinder, the connecting pin of the moving stand and the rail stand is pulled out, and at the same time the moving stand and the relay stand are separated.
The second pin hole is connected by a connecting pin, and the movable base is propelled to a position by extending the rod of the hydraulic cylinder. At that position, the connecting pin is pulled out and the third pin hole of the movable base and the rail base is connected by the connecting pin. After connecting (moving stand remains in position), the relay stand is returned to the original position by contraction of the rod of the hydraulic cylinder, and by repeating the above operation, the moving stand is sequentially propelled from the position to the subsequent positions. The propulsion mechanism of the cutting apparatus for a steel pipe or the like according to claim 1, wherein the propulsion mechanism rotates the steel pipe or the like mounted on the movable table by the propulsion so that the steel pipe or the like is machined. 3. A relay stand, a hydraulic cylinder, etc. are installed between parallel rails of a rail stand on the lower surface of the moving stand so that the entire length of the rail stand can be used as a moving space for the moving stand. A propulsion mechanism for a cutting machine for steel pipes according to claim 1. 4. The machined part of a steel pipe or the like according to claim 1, wherein the set interval size and the number of pin holes formed on the rail of the rail base and on the left and right sides of the relay stand at the same set intervals are arbitrary. Device propulsion mechanism.