JP2001355747A - Pipe clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe clamp capable of rather easily and surely changing an acting interval between a movable side clamp member and a fixed side clamp member according to the diameter of an objective pipe. SOLUTION: This pipe clamp comprises a fixed side clamp member 15 fixable to a body frame 3, a movable side clamp member 10 moving in the direction apart from and toward the fixed side clamp member 15, and a stopper mechanism 17 stopping the movement of the movable side clamp member 10 in the direction toward the fixed side clamp member 15. The acting interval between the movable side clamp member 10 and the fixed side clamp member 15 in the state of these members stopped to move by the stopper mechanism 17 is changed to clamp the pipe. The stopper mechanism 17 is installed between the body frame 3 and the movable side clamp member 10, and the change of the acting interval is performed on the fixed side clamp member 15 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed-side pressing member that can be fixed to a main body frame, and a movable-side holding member provided on the main body frame so as to move in a direction near and far from the fixed-side pressing member. Pressure member, and a stopper mechanism for preventing movement of the movable-side clamping member toward the fixed-side clamping member, and the movable-side clamping member in a state where movement is prevented by the stopper mechanism. The present invention relates to a pipe pressing device configured to change an operation interval between the movable pressing member and a fixed pressing member so as to press a pipe between the movable pressing member and the fixed pressing member.

[0002]

2. Description of the Related Art Such a pipe pressing device is used, for example, to press and deform a pipe made of polyethylene or the like from the outside at the time of repairing a gas leak and to cut off gas flow in the pipe. In the target pipe,
There are multiple types with different diameters, and if any of the pipes is deformed more than necessary, there is a risk that the pipe will be damaged, so the movement of the movable-side pressing member to the side closer to the fixed-side pressing member is prevented. A stopper mechanism is provided, and the operation interval between the movable-side pressing member and the fixed-side pressing member in a state where the movement is prevented by the stopper mechanism can be changed.

Conventionally, as shown in FIG. 9, the stopper mechanism is provided between the movable-side pressing member 10 and the fixed-side pressing member 15, and the stopper mechanism includes both pressing members. It also has a function of changing the operation interval G between the 10 and 15. That is, the movable-side clamping member 10 is provided so as to be movable along a pair of frame members 1 parallel to each other, and the fixed-side clamping member 15 is configured to be fixable between the pair of frame members 1. , A pair of stopper members 30 having a plurality of stopper surfaces 30a arranged in a stepped manner
Is attached to the movable side pressure member 10 so as to be relatively rotatable,
By rotating the stopper member 30, any one of the plurality of stopper surfaces 30a is selected and the fixed-side pressing member 1 is selected.
5 to prevent the movable side pressure member 10 from moving,
The working interval G between 0 and 15 is changed so as to be compatible with a plurality of types of pipes P having different diameters.

[0004]

Therefore, according to the above-mentioned prior art, according to the diameter of the target pipe P,
Any one of the plurality of stopper surfaces 30a will be selected, but usually, such work is relatively dark,
In addition, it is often performed in a narrow space, and the stopper surface 3
0a, that is, both stopper members 3
It is difficult to perform the zero rotation operation, and there is room for improvement in this respect.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to adjust the distance between a movable-side pressing member and a fixed-side pressing member in accordance with the diameter of a target pipe. It is an object of the present invention to provide a pipe clamp which can change an operation interval relatively easily and surely.

[0006]

[Structure] As shown in FIGS. 1 to 4 and FIGS. 6 to 8, a feature of the first aspect of the present invention is a fixed-side pressure member that can be fixed to the main body frame 3. 15 and
A movable-side pressing member 10 provided on the main body frame 3 so as to move in the near-far direction with respect to the fixed-side pressing member 15;
A stopper mechanism 17 for preventing the movable-side pressing member 10 from moving toward the fixed-side pressing member 15, and wherein the movable-side pressing member 10 is prevented from moving by the stopper mechanism 17. And fixed side clamping member 15
To the movable side pressure member 1
0 and a fixed-side pressing member 15, wherein the stopper mechanism 17 is provided between the main body frame 3 and the movable-side pressing member 10. And the configuration is such that the operation interval G is changed on the fixed-side pressing member 15 side.

[0007] The characteristic structure of the invention of claim 2 is shown in Figs.
As illustrated in FIGS. 6 to 8, the main body frame 3 is
A pair of frame members 1 are provided in parallel with each other, the movable-side pressing member 10 is provided movably along the pair of frame members 1, and the fixed-side pressing member 15 is connected to the pair of frames. It is configured so as to be fixable between the members 1, and is configured such that the operation interval G is changed by changing the fixing state of the fixed side pressing member 15 to the pair of frame members 1. It is in.

As shown in FIGS. 2 and 4, the characteristic structure of the invention according to claim 3 is that the pair of frame members 1
The working interval G is configured to be changed by inverting and fixing the fixed-side pressing member 15.

The characteristic structure of the invention according to claim 4 is shown in FIGS.
As shown in the example, the position of the fixed-side pressing member 15 is changed and fixed to the pair of frame members 1 so that the operation interval is changed.

[0010] As described above, the reference numerals are used for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

According to the first aspect of the present invention, the stopper mechanism for preventing the movable side pressing member from moving toward the fixed side pressing member in the vicinity of the main body frame and the movable side holding member. Between the pressure member, i.e., at a position irrelevant to the fixed side squeezing member, and at the fixed side squeezing member side irrelevant to the stopper mechanism, the movable side squeezing member and the fixed side squeezing member It is configured to change the operation interval between the above, so it is only necessary to change the operation interval on the fixed-side pressing member side, the operation on the stopper mechanism side is unnecessary, and the above-described prior art is not described. In comparison, the operation interval can be changed relatively easily, and the operation interval can be changed relatively easily and easily even in a dark and narrow space.

According to the characteristic structure of the second aspect of the present invention, the main body frame includes a pair of frame members parallel to each other, and the movable-side pressing member is provided movably along the pair of frame members. In addition, since the fixed-side pressing member is configured to be fixed between the pair of frame members, the movement of the movable-side pressing member is smooth, and the pressing of the pipe by the two pressing members is stabilized. Can do well. Then, by changing the fixing state of the fixed-side pressing member to the pair of frame members, the operation interval is changed. Can be changed to

According to the characteristic configuration of the third aspect of the present invention, the working interval is changed by fixing the fixed-side pressing member to the pair of frame members by reversing the front and back sides. Therefore, the working interval can be changed so as to correspond to two types of pipes having different diameters only by fixing one fixed-side pressing member by turning it upside down.

According to a fourth feature of the present invention, the action interval is changed by changing the position of the fixed-side pressing member with respect to the pair of frame members and fixing the pair of frame members. Therefore, the working interval can be changed so as to correspond to a plurality of types of pipes having different diameters only by changing and fixing the position of one fixed-side pressing member.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pipe clamp according to the present invention will be described with reference to the drawings. This pipe clamp is used, for example, in the case of repairing a gas leak, to clamp and deform a pipe made of polyethylene or the like from the outside, thereby cutting off the gas flow in the pipe. As shown in FIG. 2 and FIG. 2, there is provided a main body frame 3 composed of a pair of frame members 1 parallel to each other and an annular frame member 2 connecting the two frame members 1 to each other. A hydraulic cylinder device 4 is detachably mounted on the member 2, and the cylinder shaft 5 is provided with a pair of frame members 1.
And is configured to move back and forth along the frame member 1 between them.

A guide groove 6 is provided inside each of the pair of frame members 1, and a movable member 7 is fitted between the pair of guide grooves 6 opposed to each other. 4 and a plurality of screw holes 8 are engraved in the movable member 7, and a plurality of bolts 9 screwed into the screw holes 8 make the cross-sectional shape substantially semicircular. The configured movable-side pressure member 10 is detachably fixed to the movable member 7 via the mounting plate 11. That is, the movable side pressure member 10
When the mounting plate 11 is fixed to the movable member 7 with a plurality of bolts 9 using a plurality of bolt holes 12 provided in the mounting plate 11 and the screw holes 8 of the movable member 7. The mounting plate 11 is configured to be in sliding contact with the outer surfaces of the pair of frame members 1, and the movable side pressure member 10 is located between the pair of frame members 1.

As shown in FIG. 3, each of the free ends of the pair of frame members 1 is formed in a forked shape, and a circular through hole 13 is provided in the forked portion.
As a result, the fixed-side pressing member 15 is detachably fixed, and the movable-side pressing member 10 moves in the distance direction with respect to the fixed-side pressing member 15 by operating the hydraulic cylinder device 4. Is configured. The outer surfaces of the pair of frame members 1 are respectively provided with stopper projections 1.
6, the movable platen member 10 is moved in the direction of approaching the fixed side clamp member 15, and the mounting plate 1
The first side surface is configured to abut against the stopper projection 16 to prevent the movable-side pressure member 10 from moving further. In other words, the mounting plate 11 provided on the movable-side pressing member 10 and the stopper projection 16 provided on the frame member 1 of the main body frame 3 form a stopper mechanism 17, and the movable-side pressing member It is configured to prevent the movement of the tenth side toward the fixed side pressing member 15 in the proximity side.

As shown in FIG. 3, the fixed-side pressing member 15 has a circular cross-sectional shape, and can be inserted into both ends of a forked portion of the frame member 1, as shown in FIGS. A flat attachment portion 18 is provided, and both attachment portions 18 are provided with circular through holes 19 through which the fixing pins 14 are inserted. As shown in FIG. 2, each through hole 19 is formed at a position eccentric by a predetermined length A with respect to a center axis L1 passing through the center of the circular cross section of the fixed-side pressing member 15. With the through hole 19 interposed, the through hole 19
The nominal diameter of the corresponding pipe P is displayed on both sides of, for example, 25A and 30A.

That is, as shown in FIGS. 4A and 4B, the 25A side is opposed to the movable-side pressing member 10, and the fixed-side pressing member 15 is fixed to the frame member 1 by the fixing pins 14. In this state, the movable-side pressure member 10 is fixed to the fixed-side pressure member 1.
5, when the mounting plate 11 is in contact with the stopper projection 16, the two pressing members 10,
The operation interval G between 15 is set to be an optimal interval for clamping the pipe P of 25A. And
When the fixed-side pressing member 15 is turned upside down and the 30A side is fixed to face the movable-side pressing member 10, the mounting plate 11 comes into contact with the stopper projection 16 as shown in FIG. In the state, the operation interval G between the two pressing members 10 and 15 is set.
Is set so as to be an optimum interval for clamping the pipe P of 30A.

In order to cut off the gas flow in the polyethylene pipe P by using this pipe clamp, the fixed-side clamp 15 is removed from the frame member 1 of the main body frame 3. Position the pipe P between the frame members 1 and
A fixed pinching member 15 is disposed between the free ends of the fixed member 14 and the fixing pin 14 is inserted through the through hole 13 on the frame member 1 side and the through hole 19 on the fixed side pinching member 15 side. The pressure member 15 is fixed to the frame member 1 of the main body frame 3. At this time, if the target pipe P is 25A, the fixed side pressure member 1
The 25A side indicated by 5 is opposed to the movable-side pressure member 10, and if the pipe P is 30A, the 30A side is opposed to the movable-side pressure member 10 and fixed. In addition, 25A or 30A
In addition, for example, fixed-side pressure members 15 for 50A and 75A are prepared, and are appropriately selected and used according to the diameter of the target pipe P.

Thereafter, a hydraulic pump (not shown) is driven to operate the hydraulic cylinder device 4, and the movable clamping member 10 and the mounting plate 11 are moved closer to the fixed clamping member 15 via the movable member 7. Move to Then, the movable-side pressing member 10 and the fixed-side pressing member 15 come into contact with the outer peripheral surface of the pipe P, press and deform the pipe P, and the mounting plate 11 comes into contact with the stopper projection 16. In this way, further movement of the movable-side pressing member 10 is prevented,
The operation interval G between 0 and 15 is maintained at an interval corresponding to the diameter of the target pipe P, and the gas flow is cut off without damaging the pipe P. When the gas is allowed to flow again, the movable-side pressing member 10 is moved to the fixed-side pressing member 15.
The pipe P is removed from the pipe P by the reverse procedure to the above, and the pipe P deformed by the correction tool (not shown) is returned to the original state.

The pipe clamping device is configured such that gas in the steel pipe P can be cut off.
In that case, as shown in FIG. 5, the steel tube movable side pressure member 20 is fixed to the movable member 7, and the steel tube fixed side pressure member 21 is fixed to the frame member 1 of the main body frame 3. Is fixed. Since these steel tube pressure members 20 and 21 are provided with corrugated pressure portions 20a and 21a and a pair of cutting blades 20b and 21b, the hydraulic cylinder device 4 is operated to
When the movable-side pressing member 20 is moved in a direction to approach the fixed-side pressing member 21, the pair of cutting blades 20 b and 21 b provided on both of the pressing members 20 and 21 cut the pipe P, and The pressure parts 20a, 21a pinch and deform the pipe P, thereby blocking the gas flow.

[Other Embodiment] Next, another embodiment will be described. To avoid redundant description, the same reference numerals are given to the same components and components having the same functions as those described in the previous embodiment. Accordingly, the description will be omitted, and only the parts and configurations that are different from those of the previous embodiment will be mainly described.

(1) In the above embodiment, a pair of frame members 1
An example is shown in which the fixed-side pressing member 15 is turned upside down and fixed so as to change the action interval G between the two pressing members 10 and 15. On the other hand, by changing the position of the fixed-side pressing member 15 and fixing it, the operation interval G can be changed. FIGS. 6 to 8 show specific examples.

In another embodiment shown in FIGS. 6 and 7,
The fixing pin 22 is provided on both sides thereof with a circular holding portion 23 fitted inside the circular through hole 13 on the frame member 1 side, and an intermediate portion 24 located between the two holding portions 23, and the intermediate portion 24 is provided. , And is configured to be inserted into the through hole 25 on the fixed-side pressing member 15 side. Unlike the previous embodiment, the through hole 25 is formed on the center axis L <b> 1 of the fixed-side pressing member 15, and the intermediate portion 24 of the fixed pin 22 is closer to the two holding portions 23 of the fixed pin 22. It has two arc surfaces 24b and 24c having different lengths B and C from a central axis L2 passing through the center. Although not shown, corresponding to each of the arc surfaces 24b and 24c, for example, 25A and 30A Thus, the nominal diameter of the pipe P is displayed.

According to another embodiment shown in FIGS. 6 and 7, both fixing pins 22 are rotated, and the fixed side pressing member 1 is rotated.
The intermediate portion 24 of the fixing pin 22 is
, One of the two arc surfaces 24b and 24c is brought into contact with each other. That is, as shown in FIG. 6, one of the arc surfaces 24b is brought into contact with the through hole 25 of the fixed-side pressure member 15, and as shown in FIG.
The fixing position of the fixed-side pressing member 15 with respect to the pair of frame members 1 is changed between the case where the other circular surface 24c is brought into contact with the other arc surface 24c.
The action interval G between the five is changed, and the action interval G can be easily changed by rotating the fixing pin 22. In this alternative embodiment, fixing pins 22 for 50A and 75A are provided in addition to 25A and 30A.

In the other embodiment shown in FIGS. 6 and 7, however, the operation interval G can be easily changed by rotating the fixing pin 22, but the fixing pin 22 may rotate unexpectedly. FIG. 8 shows a modification of the above. In another embodiment shown in FIG. 8, the through-hole 26 on the frame member 1 side is formed of a rectangular through-hole, and on both sides of the fixing pin 27, a rectangular fitting that fits into the rectangular through-hole 26. Holding portion 28 is provided, and an intermediate portion 29 located between the two holding portions 28 has two arcs having different lengths B and C from a center axis L2 passing through the centers of the both holding portions 28 in the fixing pin 27. Surfaces 29b and 29c are provided. Therefore, also in this alternative embodiment, the fixed-side pressure member 15
By contacting either one of the two arc surfaces 290b and 29c with the through hole 25, the action distance G between the two pressure members 10 and 15 can be changed.
Moreover, the fixing pin 27 does not rotate unexpectedly.

(2) In the above embodiment, one fixed-side pressing member 15 is turned upside down and fixed, so that the action interval G is adjusted to correspond to two types of pipes P having different diameters.
Has been shown, but one fixed-side pressure member 1
5 can be configured to support only one type of pipe P, or conversely, one fixed side pressing member 15 can be configured to support three types of pipes P having different diameters. Similarly, in another embodiment shown in FIGS. 6 to 8, one fixing pin 22
It is also possible to configure so as to be able to cope with only one type of pipe P, or to be able to cope with three types of pipes P having different diameters by one fixing pin 22, 27.

(3) In the above embodiments, the main body frame 3
Movable side pressure member 10 along a pair of frame members 1 constituting
Or the fixed side clamping member 15 is fixed across the pair of frame members 1. However, only one frame member 1 is provided, and the movable side clamping member 15 is moved along the one frame member 1. The member 10 may be moved in a cantilever manner, or the fixed side pressure member 15 may be fixed in a cantilever manner.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a pipe clamp.

FIG. 2 is a partially cutaway front view of a pipe clamp.

FIG. 3 is a partially cutaway side view showing the operation of the pipe clamp.

FIG. 4 is a partially cutaway front view showing the operation of the pipe clamp.

FIG. 5 is a partially cutaway side view showing another operation of the pipe clamp.

FIG. 6 is a longitudinal side view and a partially cutaway front view of a pipe clamp according to another embodiment.

FIG. 7 is a longitudinal side view and a partially cutaway front view of a pipe clamp according to another embodiment.

FIG. 8 is a longitudinal sectional side view and a partially cutaway front view of a pipe clamping device according to another embodiment.

FIG. 9 is a front view of a conventional pipe clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame member 3 Main body frame 10 Movable side pressing member 15 Fixed side pressing member 17 Stopper mechanism G Working interval P Pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeyuki Fukai 4-1-2 Hirano-cho, Chuo-ku, Osaka-shi, Osaka Inside Osaka Gas Co., Ltd. (72) Inventor Hiroshi Murase 4-chome, Hirano-cho, Chuo-ku, Osaka, Osaka 1-2-2 Inside Osaka Gas Co., Ltd. (72) Yoshinori Higashioka, Inventor 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka Osaka-gasashi Co., Ltd. (72) Koichi Hamada, Koichi Hamada, Chuo-ku, Osaka-shi, Osaka 4-1-2, Osaka Gas Co., Ltd.

Claims (4)

[Claims] 1. A fixed-side pressing member that can be fixed to a main body frame;
A movable-side pressing member provided on the main body frame so as to move in the near-far direction with respect to the fixed-side pressing member; and moving the movable-side pressing member toward a side closer to the fixed-side pressing member. A stopper mechanism for preventing the movement of the movable-side pressing member and the fixed-side pressing member in a state where movement is prevented by the stopper mechanism, and fixing the movable-side pressing member to the movable-side pressing member. A pipe pressing device configured to press a pipe with a side pressing member, wherein the stopper mechanism is provided between the main body frame and a movable side pressing member, and A pipe pressing device configured to perform the change on the fixed side pressing member side. 2. The main body frame includes a pair of frame members parallel to each other, the movable-side pressing member is provided movably along the pair of frame members, and the fixed-side pressing member is provided. Is configured to be fixable between the pair of frame members, and is configured such that the operation interval is changed by changing a fixing state of the fixed side pressing member with respect to the pair of frame members. The pipe pressing device according to claim 1. 3. The pipe according to claim 2, wherein the operation interval is changed by reversing and fixing the fixed-side pressing member to the pair of frame members. Clamp. 4. The structure according to claim 2, wherein the action interval is changed by changing the position of the fixed-side pressing member with respect to the pair of frame members and fixing the fixed-side pressing member. Pipe clamp.