JPH08586U - Pipe straightening device - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to easily correct the recesses formed on the surface of the pipe. [Structure] On a long base stand 1, a hydraulic pressure supply pipe 7 extending from one end along the length direction of the base stand 1, a head 8 attached to the tip of this supply pipe 7, and a length on the base stand 1 The movable base 4 and the indicating member 14 indicating the position of the head 8 are arranged so as to be movable in any direction, and the pipe A fitted into the head 8 is supported by the movable base 4 and moved in the axial direction to move the concave portion to the head 8. The head 8 is actuated by hydraulic pressure in a state of facing the above, and the concave portion is extruded from the inside to be corrected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a straightening device for a pipe for correcting a recess formed on the outer surface of various steel pipes.

[0002]

[Prior art]

 For example, pipe components such as pipe supports, square pipes, and construction frames for temporary scaffolding, which are used as building materials, are handled relatively violently, and therefore recesses often occur on the outer surface. Therefore, when these materials are collected and reused, it is necessary to correct the generated recesses. Conventionally, in order to correct the concave portion formed on the surface of the pipe, a means has been adopted in which the concave portion is returned to its original state by hitting the portion of the pipe outward from the inside of the pipe.

[0003]

[Problems to be solved by the device]

 By the way, if the pipes used for construction have a relatively small diameter, and if they are long products such as pipe supports, it is difficult to straighten the recesses of the pipes from the inside and it is difficult to correct them. At present, there is awaiting the proposal of a device that can easily and reliably correct concave portions. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a pipe straightening device capable of easily correcting a recess even from a small-diameter long pipe.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a movable base that is movable along the longitudinal direction of the base on a long base, and a support member for supporting a pipe to be corrected on the movable base. A hydraulic supply pipe is arranged on the upper part of the base from one end along the length direction, and is inserted into the pipe at the tip of the hydraulic supply pipe, and the hydraulic pressure causes radial direction of the pipe. A straightening head that moves forward and backward is attached to the straightening head, and an indicator member indicating the position of the straightening head is arranged near the straightening head.

[0005]

[Action]

 The pipe is placed so that the portion (recess) to be corrected is located between the support members provided on the movable table, and the pipe is moved in the axial direction together with the movable table to move the straightening head back and forth in the pipe for straightening. When the position to be corrected is aligned with the indicating member, the correction head faces the position to be corrected from the inner surface of the pipe. When hydraulic pressure is applied to the head in this state via the hydraulic pressure supply pipe, the head expands in the radial direction of the pipe, presses the recess of the pipe from the inner side surface, and pushes out the recess to the original state. Can be returned to.

[0006]

【Example】

 Next, the pipe straightening apparatus according to the present invention will be described in detail below with reference to an embodiment. In FIG. 1, a base 1 has a pair of long rails 2 and 2 which are parallel to each other on both sides, and a support roller 3 for a pipe A to be straightened is provided at the right end in the figure between the rails 2 and 2. A movable base 4 is provided between the rails 2 and 2 so as to be movable along the longitudinal direction of the rails 2 and 2. Both rails 2 and 2 of the base 1 can be expanded and contracted in the length direction, and can be adjusted according to the length of the pipe A to be corrected. Further, in the figure, a pair of standing walls 5 and 6 are erected on the left end portion on the base 1, and a linear hydraulic supply pipe 7 supported by the standing walls 5 and 6 is mounted on the base 1. The straightening head 8 is attached to the tip of the hydraulic supply pipe 7. As described above, by forming the base 1 and the hydraulic supply pipe 7 to be long, it is possible to deal with a portion (recess) to be corrected of a long pipe such as a pipe support.

On the movable table 4, supporting members 9, 9 for the pipe A are attached at front and rear positions in the moving direction, and a supporting roller 10 for the hydraulic pressure supply pipe 7 is provided at one end. There is. The support members 9 and 9 have a structure in which a pair of rollers 12 and 12 are provided on both upper sides of a bracket 11 which is erected on the movable table 4, and the pipe A is rotatably supported by both rollers 12 and 12. There is. Further, on the base 1, a column 13 is erected at a side position of the straightening head 8 so as not to hinder the movement of the movable table 4, and the upper end of the column 13 is located directly above the center of the straightening head 8. The indicator member 14 for displaying the position of the straightening head 8 is attached in a suspended manner, and when the straightening head 8 is inserted into the pipe A, the position of the straightening head 8 is shown from the outside, and the concave portion B formed in the pipe A is straightened. It is designed so that it can be aligned accurately with respect to 8.

As shown in FIG. 3, the straightening head 8 has a cylindrical structure in which a main body 15 and a movable member 16 are combined, and the movable member 16 moves in the radial direction of the pipe A by hydraulic pressure in the main body 15. It is supposed to do. The straightening heads 8 are prepared according to the diameter and the cross-sectional shape of the pipe A, for example, for round pipes and square pipes, and many types according to the respective diameters are prepared. You can select and use the ones.

The straightening device of the present invention has the above-described structure, and in order to correct the concave portion B formed in the pipe A, the pipe A is moved from the supporting roller 3 onto the supporting members 9 and 9 of the movable table 4. The recessed portion B formed on the outer surface of the pipe A is positioned between the support members 9 and 9 while the movable base 4 is moved to move the straightening head 8 into the pipe A from the end portion of the pipe A. Let it be inserted.

Further, when the pipe A is further moved in the axial direction together with the movable table 4 so that the concave portion B faces directly below the indicator member 14, the concave portion B is moved to the movable member 16 of the correction head 8 as shown in FIG. It will be in the facing alignment state. When the hydraulic pressure supply source is operated in this state to supply oil through the hydraulic pressure supply pipe 7 and apply hydraulic pressure to the main body 15 of the correction head 8, the main body 15 and the movable member 16 move in the radial direction of the pipe A. When the movable member 16 pushes up the concave portion B from the inner side by stretching and stretching it, the concave portion B is pushed outward by this, and the original state is restored. After the straightening, the hydraulic pressure is released from the straightening head 8, the main body 15 and the movable member 16 are contracted, and the pipe A is pulled out from the straightening head 8.

[0011]

[Effect of device]

 As described above, according to the present invention, the pipe supported by the movable table is inserted into the hydraulic supply pipe from the straightening head, and the recessed portion formed in the pipe is pushed out by the head to which the hydraulic pressure is applied and returned to the original state. Even if the pipe has a relatively small diameter and a long length, it is possible to easily and reliably correct the concave portion formed on the surface. In addition, the pointing member enables accurate alignment of the recess of the pipe and the head even when the head cannot be seen, and corrects without error.

[0012]

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a straightening device for a pipe according to the present invention.

FIG. 2 is a plan view of the correction device shown in FIG.

FIG. 3 is an enlarged vertical cross-sectional view of a main part showing a portion to be corrected by the correction device shown in FIG.

[Explanation of symbols]

 1 base stand 2 rail 3 support roller 4 movable stand 7 hydraulic supply pipe 8 straightening head 9 support member 14 indicator member 15 main body 16 movable member

Claims (1)

[Scope of utility model registration request] 1. A movable base movable along a longitudinal direction of the base is provided on a long base, and a support member for supporting a pipe to be corrected is provided on the movable base, and an upper portion of the base is provided. A hydraulic supply pipe is arranged along the length direction from one end to, and at the tip of this hydraulic supply pipe is fitted and inserted in the pipe, and a correction head that moves forward and backward in the radial direction of the pipe by hydraulic pressure is attached, A straightening device for a pipe, characterized in that an indicator member for indicating the position of the straightening head is arranged in the vicinity of the straightening head.