Precise straightening device and method for thin-wall seamless steel pipe

Abstract

The invention discloses a thin-wall seamless steel pipe precision straightening device and method, and particularly relates to the technical field of steel pipe straightening, the thin-wall seamless steel pipe precision straightening device comprises a straightening workbench, a concave sliding groove is formed in one side of the outer end of the straightening workbench, a bottom supporting plate is arranged at the lower end of the straightening workbench, and a supporting cross rod is arranged in the middle of the upper end of the bottom supporting plate; a fixed supporting block and a bottom straightening supporting block are arranged on one side of the upper end of the straightening workbench. In actual use, under the corresponding arrangement state of the supporting sliding blocks, the small motors, the two-way lead screws, the pipeline supporting blocks and the supporting sliding grooves, the distance between the pipeline supporting blocks can be adjusted through the small motors, so that thin-wall steel pipes with different diameters can be conveniently supported, meanwhile, the moving stability of the pipeline supporting blocks can be improved, and the practicability is high. And meanwhile, in the corresponding arrangement state of a second electric telescopic rod, an adjusting supporting plate, an adjusting rolling wheel and a concave adjusting groove, the adjusting supporting plate can be driven to ascend and descend through the second electric telescopic rod.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe straightening, and more specifically, to a device and method for precise straightening of thin-walled seamless steel pipes. Background Art

[0002] Seamless steel pipe is made by perforating a whole round steel bar. The steel pipe without weld seam on the surface is called seamless steel pipe. According to different uses, there are thick-walled seamless steel pipe and thin-walled seamless steel pipe. In order to eliminate the longitudinal bending and roundness error of the seamless steel pipe after rolling, it is generally necessary to straighten the seamless steel pipe. Among them, the straightening process is more common to use a six-roller inclined roller straightening machine. The existing six-roller inclined roller straightening machine has a total of six straightening rollers, which are divided into three pairs and arranged symmetrically up and down. The six straightening rollers are all active rollers. The frame of the straightening machine consists of an upper and lower part. Three sets of upper roller height adjustment, balancing and locking devices are installed on the upper frame. Each set of devices controls a roller separately. However, when straightening thin-walled seamless steel pipes of different diameters, when the spacing of the bottom straightening support blocks is large, it is easy to affect the stability of the straightening of the thin-walled steel pipe. At the same time, when supporting and straightening thin-walled steel pipes of different diameters, the operation of adjusting the position of the pipeline support pulley is relatively cumbersome. In view of this situation, a thin-walled seamless steel pipe precision straightening device and method are proposed. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a thin-walled seamless steel pipe precision straightening device and method. The technical problem to be solved by the present invention is: how to conveniently adjust the position of the bottom straightening support block and the pipe support block.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thin-wall seamless steel pipe precision straightening device, comprising a straightening workbench, a concave slide groove is provided on one side of the outer end of the straightening workbench, a bottom support plate is provided at the lower end of the straightening workbench, a supporting cross bar is provided in the middle of the upper end of the bottom support plate, a fixed support block and a bottom straightening support block are provided on one side of the upper end of the straightening workbench, and a concave adjustment groove and a limit slide groove are provided in the middle of the upper end of the straightening workbench;

[0005] The end surface of the straightening workbench is provided with a vertical adjustment groove on the upper side of the limiting slide groove, the upper end of the supporting cross bar is provided with a second electric telescopic rod, the upper end of the output shaft of the second electric telescopic rod is provided with an adjustment support plate, the middle part of the upper end of the adjustment support plate is provided with an adjustment roller, and the inside of the limiting slide groove is provided with a square slider.

[0006] In a preferred embodiment, a supporting slide rail is provided on the inner side of the concave slide groove on the outer side of the straightening workbench, a clamping bracket is provided on the outer end of the straightening workbench on the side close to the concave slide groove, and a first electric telescopic rod is provided on the outer side of the end surface of the clamping bracket;

[0007] A clamping adjustment rod is provided on the outside of the upper end of the clamping bracket, a clamping plate is provided at one end of the clamping adjustment rod, and a clamping roller is provided on one side of the outer end surface of the clamping plate.

[0008] In a preferred embodiment, both ends of the first electric telescopic rod are connected to the outer ends of the clamping adjustment rod and the clamping bracket through a rotating connector, and the upper end of the clamping bracket is connected to the middle part of the clamping adjustment rod through a rotating connector;

[0009] A straightening gantry is arranged outside the concave slide, a straightening hydraulic telescopic rod is arranged in the middle of the upper end of the straightening gantry, and an output shaft of the straightening hydraulic telescopic rod passes through the end face of the straightening gantry and extends to the lower end of the straightening gantry.

[0010] In a preferred embodiment, the output shaft of the straightening hydraulic telescopic rod is provided with a straightening pressing block at the lower end of the straightening gantry, a vertical support plate is provided on the lower side of the inner end surface of the straightening gantry, and a guide pulley is provided on one side of the inner end surface of the vertical support plate;

[0011] A guide slider is provided in the middle of the inner end surface of the vertical support plate, a guide groove is provided on the inner end surface of the guide slider, a support slider is provided on the upper end of the fixed support block, and a pipeline support block is provided outside the upper end of the support slider.

[0012] In a preferred embodiment, a pipeline support pulley is provided in the middle of the upper end of the pipeline support block, a support slide groove is provided at the lower end of the pipeline support block, an adjustment groove is provided at the upper end of the fixed support block, and a partition support plate is provided in the middle of the adjustment groove;

[0013] A small motor is arranged on one side of the outer end surface of the fixed support block, and the output shaft of the small motor passes through the end surface of the adjustment groove and extends into the inside thereof, and the output shaft of the small motor is provided with a bidirectional screw rod inside the adjustment groove.

[0014] In a preferred embodiment, the outer end surface of the bidirectional screw is provided with a screw connecting block, the upper end of the bottom straightening support block is provided with a straightening lifting block, and the lower side of the inner end surface of the straightening lifting block is provided with a straightening telescopic rod;

[0015] A straightening support pad is provided at the upper end of the straightening lifting block, an L bracket is provided on one side of the outer end surface of the bottom straightening support block, and a pressure detector is provided on one side of the upper end of the L bracket.

[0016] In a preferred embodiment, a pressure detection rod is provided on one side of the pressure detector, a mounting ear plate is provided on the lower side of the outer end of the bottom straightening support block, and a locking threaded rod is provided on the upper end of the square slider;

[0017] The locking threaded rod passes through the vertical adjustment groove and the end surface of the mounting ear plate, and the locking threaded rod is connected to the mounting ear plate through a locking nut, and a thin-walled steel pipe is arranged on the outside of the upper end of the bottom straightening support block.

[0018] In a preferred embodiment, the first electric telescopic rod is electrically connected to an external control device, and the number of the clamping brackets is two, and they are arranged in a mirror image state on both sides of the vertical central axis of the main viewing direction of the straightening workbench;

[0019] The bottom support plate, the fixed support block and the bottom straightening support block are provided in plural numbers and are arranged in an array state on both sides of the vertical central axis in the main viewing direction of the straightening workbench.

[0020] In a preferred embodiment, the inner end surface of the supporting slide groove is matched with the outer end surface of the supporting slider, the pressure detector is electrically connected to the external control device, the outer end surface of the square slider is matched with the inner end surface of the limiting slide groove, and the inner end surface of the concave adjustment groove is matched with the outer end surface of the adjustment support plate;

[0021] The number of the adjusting rollers is multiple, and they are arranged in an array state on both sides of the vertical central axis of the main viewing direction of the adjusting support plate. The number of the square slider and the locking threaded rod is two, and they are arranged in a mirror state on both sides of the vertical central axis of the right viewing direction of the bottom straightening support block.

[0022] The method for using the above-mentioned thin-walled seamless steel pipe precision straightening device of the present invention comprises the following specific steps:

[0023] S1: The staff places the thin-walled steel pipe on the upper end of the bottom straightening support block, and places one end of the thin-walled steel pipe on the upper end of the pipe support pulley, and then drives the first electric telescopic rod to work through the external control device. The first electric telescopic rod will drive the clamping adjustment rod to adjust the angle so that the clamping roller on the inner side of the clamping plate is pressed against the upper end of the thin-walled steel pipe.

[0024] S2: The pressure detection rod will fit on the lower side of the outer end surface of the thin-walled steel pipe. Then, when the thin-walled steel pipe rotates, the straightening telescopic rods on the inner side of the bottom straightening support blocks on both sides of the raised part of the thin-walled steel pipe will drive the straightening support pad to rise.

[0025] S3: When the pressure detection rod detects the raised part of the thin-walled steel pipe, the straightening gantry will move to the corresponding position, and the straightening hydraulic telescopic rod will drive the straightening pressing block to press down, thereby straightening and pressing the thin-walled steel pipe.

[0026] S4: After pressing, the thin-walled steel pipe is rotated again, and the steel pipe is re-tested by the pressure detection rod and the pressure detector. After the test is completed, the staff can drive the clamping adjustment rod to tilt in the opposite direction through the first electric telescopic rod, so that the clamping roller is separated from the upper end of the thin-walled steel pipe, and then the thin-walled steel pipe can be removed.

[0027] Technical effects and advantages of the present invention:

[0028] When the present invention is actually used, by setting the supporting slider, small motor, bidirectional screw rod, pipeline support block and supporting slide groove in corresponding state, the pipeline support block can be adjusted by the small motor to facilitate the support of thin-walled steel pipes of different diameters, and at the same time, the stability of the movement of the pipeline support block can be increased. At the same time, when the second electric telescopic rod, the adjustment support plate, the adjustment roller and the concave adjustment groove are set in corresponding state, the adjustment support plate can be driven to rise and fall by the second electric telescopic rod to lift the bottom straightening support block, thereby facilitating the adjustment of the spacing of the bottom straightening support block, thereby increasing the stability when straightening thin-walled steel pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the overall bottom structure of the present invention.

[0031] Figure 3 It is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0032] Figure 4 It is a schematic diagram of the overall right side cross-sectional structure of the present invention.

[0033] Figure 5 It is a schematic diagram of the structure of the straightening gantry of the present invention.

[0034] Figure 6 It is a schematic diagram of the cross-sectional connection structure of the fixed support block of the present invention.

[0035] Figure 7 It is a schematic diagram of the cross-sectional connection structure of the bottom straightening support block of the present invention.

[0036] Figure 8 For the present invention Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0037] The accompanying drawings are marked as follows: 1 straightening workbench, 2 bottom support plate, 3 concave slide, 4 support slide rail, 5 straightening gantry, 6 straightening hydraulic telescopic rod, 7 straightening pressing block, 8 vertical support plate, 9 thin-walled steel pipe, 10 fixed support block, 11 bottom straightening support block, 12 first electric telescopic rod, 13 clamping adjustment rod, 14 clamping plate, 15 support cross bar, 16 second electric telescopic rod, 17 adjustment support plate, 18 adjustment roller, 19 limit slide, 20 vertical adjustment groove, 21 concave adjustment groove, 22 Adjusting groove, 23 supporting slider, 24 small motor, 25 bidirectional screw, 26 pipeline support block, 27 pipeline support pulley, 28 supporting slide, 29 partition support plate, 30 screw connecting block, 31 mounting ear plate, 32 square slider, 33 locking threaded rod, 34 straightening lifting block, 35 straightening telescopic rod, 36 straightening support pad, 37 clamping bracket, 38L bracket, 39 pressure detector, 40 pressure detection rod, 41 clamping roller, 42 guide slider, 43 guide pulley, 44 guide slide. DETAILED DESCRIPTION

[0038] The present invention provides a thin-wall seamless steel pipe precision straightening device, such as Figure 1 and 2 As shown, it comprises a straightening workbench 1, a concave slide groove 3 is provided on one side of the outer end thereof, a bottom support plate 2 is provided at the lower end of the straightening workbench 1, a support cross bar 15 is provided at the middle of the upper end of the bottom support plate 2, a fixed support block 10 and a bottom straightening support block 11 are provided on one side of the upper end of the straightening workbench 1, and a support slide rail 4 is provided on the inner side of the concave slide groove 3 on the outer side of the straightening workbench 1;

[0039] The outer end of the straightening workbench 1 is provided with a clamping bracket 37 on one side close to the concave slide groove 3, and the outer side of the end surface of the clamping bracket 37 is provided with a first electric telescopic rod 12, and the outer side of the upper end of the clamping bracket 37 is provided with a clamping adjustment rod 13, and one end of the clamping adjustment rod 13 is provided with a clamping plate 14, and the two ends of the first electric telescopic rod 12 are connected to the clamping adjustment rod 13 and the outer end of the clamping bracket 37 through a rotating connecting piece, and the clamping adjustment rod 13 can be driven by the first electric telescopic rod 12 to tilt the angle, so that the thin-walled steel pipe 9 can be fitted and fixed by the clamping plate 14 and the pressing roller 41, thereby increasing the stability of the straightening of the thin-walled steel pipe 9;

[0040] The upper end of the clamping bracket 37 is connected to the middle part of the clamping adjustment rod 13 through a rotating connector, and a straightening gantry 5 is provided outside the concave slide 3. A straightening hydraulic telescopic rod 6 is provided in the middle part of the upper end of the straightening gantry 5. The output shaft of the straightening hydraulic telescopic rod 6 passes through the end face of the straightening gantry 5 and extends to the lower end of the straightening gantry 5.

[0041] The output shaft of the straightening hydraulic telescopic rod 6 is provided with a straightening pressing block 7 at the lower end of the straightening gantry 5, a vertical support plate 8 is provided on the lower side of the inner end surface of the straightening gantry 5, a thin-walled steel pipe 9 is provided on the outer side of the upper end of the bottom straightening support block 11, and the first electric telescopic rod 12 is electrically connected to the external control device;

[0042] The number of the clamping brackets 37 is two, and they are arranged in a mirror state on both sides of the vertical center axis of the main viewing direction of the straightening workbench 1. The number of the bottom support plate 2, the fixed support block 10 and the bottom straightening support block 11 are multiple, and they are arranged in an array state on both sides of the vertical center axis of the main viewing direction of the straightening workbench 1.

[0043] like Figure 3 , 4 As shown in FIG. 5 , a concave adjustment groove 21 and a limit slide groove 19 are provided in the middle of the upper end of the straightening workbench 1, a vertical adjustment groove 20 is provided on the upper side of the limit slide groove 19 on the end surface of the straightening workbench 1, a second electric telescopic rod 16 is provided on the upper end of the support cross bar 15, and an adjustment support plate 17 is provided on the upper end of the output shaft of the second electric telescopic rod 16;

[0044] An adjusting roller 18 is provided in the middle of the upper end of the adjusting support plate 17, a guide pulley 43 is provided on one side of the inner end surface of the vertical support plate 8, a guide slider 42 is provided in the middle of the inner end surface of the vertical support plate 8, and a guide slot 44 is provided on the inner end surface of the guide slider 42, which can effectively increase the stability of the movement of the straightening gantry 5;

[0045] The inner end surface of the concave adjustment groove 21 is matched with the outer end surface of the adjustment support plate 17. The number of the adjustment rollers 18 is provided in plurality, and they are arranged in an array state on both sides of the vertical central axis of the main viewing direction of the adjustment support plate 17. The second electric telescopic rod 16 can drive the adjustment support plate 17 to rise and fall in height, so that the adjustment rollers 18 protrude from the upper end surface of the straightening workbench 1, thereby increasing the convenience of adjusting the spacing position of the bottom straightening support block 11.

[0046] like Figure 6 , 7 As shown in FIG. 8 , a square slider 32 is provided inside the limiting slide groove 19, a pressing roller 41 is provided on one side of the outer end surface of the clamping plate 14, a supporting slider 23 is provided on the upper end of the fixed support block 10, a pipe supporting block 26 is provided outside the upper end of the supporting slider 23, and a pipe supporting pulley 27 is provided in the middle of the upper end of the pipe supporting block 26;

[0047] A support slot 28 is provided at the lower end of the pipeline support block 26, an adjustment slot 22 is provided at the upper end of the fixed support block 10, a partition support plate 29 is provided in the middle of the adjustment slot 22, a small motor 24 is provided on one side of the outer end surface of the fixed support block 10, and the output shaft of the small motor 24 passes through the end surface of the adjustment slot 22 and extends into the interior thereof;

[0048] The output shaft of the small motor 24 is provided with a bidirectional screw 25 inside the adjustment slot 22, and the outer end surface of the bidirectional screw 25 is provided with a screw connecting block 30, which can adjust the spacing of the pipeline support block 26 through the small motor 24, so as to facilitate the support of thin-walled steel pipes 9 with different straight drops, and the upper end of the bottom straightening support block 11 is provided with a straightening lifting block 34, and the lower side of the inner end surface of the straightening lifting block 34 is provided with a straightening telescopic rod 35, and the upper end of the straightening lifting block 34 is provided with a straightening support pad 36;

[0049] An L bracket 38 is provided on one side of the outer end surface of the bottom straightening support block 11, a pressure detector 39 is provided on one side of the upper end of the L bracket 38, a pressure detection rod 40 is provided on one side of the pressure detector 39, a mounting ear plate 31 is provided on the lower side of the outer end of the bottom straightening support block 11, and a locking threaded rod 33 is provided on the upper end of the square slider 32;

[0050] The locking threaded rod 33 passes through the end surface of the vertical adjustment groove 20 and the mounting ear plate 31, and the locking threaded rod 33 is connected to the mounting ear plate 31 through a locking nut, the inner end surface of the supporting slide groove 28 is adapted to the outer end surface of the supporting slide block 23, and the pressure detector 39 is electrically connected to the external control device;

[0051] The outer end surface of the square slider 32 is matched with the inner end surface of the limiting slide groove 19. The number of the square slider 32 and the locking threaded rod 33 is two, and they are arranged in a mirror state on both sides of the vertical central axis of the bottom straightening support block 11 in the right viewing direction.

[0052] Working principle of the present invention:

[0053] When the present invention is used, the staff places the thin-walled steel pipe 9 on the upper end of the bottom straightening support block 11, and places one end of the thin-walled steel pipe 9 on the upper end of the pipeline support pulley 27, and then drives the first electric telescopic rod 12 to work through the external control device. The first electric telescopic rod 12 will drive the clamping adjustment rod 13 to adjust the angle, so that the clamping roller 41 on the inner side of the clamping plate 14 is pressed against the upper end of the thin-walled steel pipe 9, and then the pressure detection rod 40 will fit the lower side of the outer end surface of the thin-walled steel pipe 9. Then, when the thin-walled steel pipe 9 rotates, the straightening and telescopic rods on the inner side of the bottom straightening support blocks 11 on both sides of the raised parts of the thin-walled steel pipe 9 The rod 35 will drive the straightening support pad 36 to rise. When the pressure detection rod 40 detects the raised part of the thin-walled steel pipe 9, the straightening gantry 5 will move to the corresponding position, and the straightening hydraulic telescopic rod 6 will drive the straightening pressing block 7 to press down, thereby straightening and pressing the thin-walled steel pipe 9. After the pressing is completed, the thin-walled steel pipe 9 is rotated again, and the steel pipe is re-detected by the pressure detection rod 40 and the pressure detector 39. After the detection is completed, the staff can drive the clamping adjustment rod 13 to tilt in the opposite direction through the first electric telescopic rod 12, so that the clamping roller 41 is detached from the upper end of the thin-walled steel pipe 9, and then the thin-walled steel pipe 9 can be removed.

[0054] Finally, a few points should be explained: the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thin-wall seamless steel pipe precision straightening device, characterized in that: include: A straightening workbench (1) is provided with a concave slide groove (3) on one side of its outer end, a bottom support plate (2) is provided at the lower end of the straightening workbench (1), a support cross bar (15) is provided in the middle of the upper end of the bottom support plate (2), a fixed support block (10) and a bottom straightening support block (11) are provided on one side of the upper end of the straightening workbench (1), and a concave adjustment groove (21) and a limit slide groove (19) are provided in the middle of the upper end of the straightening workbench (1); The end surface of the straightening workbench (1) is provided with a vertical adjustment groove (20) on the upper side of the limiting slide groove (19); the upper end of the supporting cross bar (15) is provided with a second electric telescopic rod (16); the upper end of the output shaft of the second electric telescopic rod (16) is provided with an adjustment support plate (17); the middle part of the upper end of the adjustment support plate (17) is provided with an adjustment roller (18); and the interior of the limiting slide groove (19) is provided with a square slider (32).

2. A thin-wall seamless steel pipe precision straightening device according to claim 1, characterized in that: The straightening workbench (1) is provided with a supporting slide rail (4) on the inner side of the concave slide groove (3) on the outer side, and a clamping bracket (37) is provided on the outer end of the straightening workbench (1) on the side close to the concave slide groove (3), and a first electric telescopic rod (12) is provided on the outer side of the end surface of the clamping bracket (37); A clamping adjustment rod (13) is provided on the outside of the upper end of the clamping bracket (37), a clamping plate (14) is provided at one end of the clamping adjustment rod (13), and a clamping roller (41) is provided on one side of the outer end surface of the clamping plate (14).

3. A thin-walled seamless steel pipe precision straightening device according to claim 2, characterized in that: The two ends of the first electric telescopic rod (12) are connected to the outer ends of the clamping adjustment rod (13) and the clamping bracket (37) through a rotating connecting piece, and the upper end of the clamping bracket (37) is connected to the middle part of the clamping adjustment rod (13) through a rotating connecting piece; A straightening gantry (5) is arranged outside the concave slide groove (3), and a straightening hydraulic telescopic rod (6) is arranged in the middle of the upper end of the straightening gantry (5). The output shaft of the straightening hydraulic telescopic rod (6) passes through the end surface of the straightening gantry (5) and extends to the lower end of the straightening gantry (5).

4. A thin-wall seamless steel pipe precision straightening device according to claim 3, characterized in that: The output shaft of the straightening hydraulic telescopic rod (6) is provided with a straightening pressing block (7) at the lower end of the straightening gantry (5), a vertical support plate (8) is provided on the lower side of the inner end surface of the straightening gantry (5), and a guide pulley (43) is provided on one side of the inner end surface of the vertical support plate (8); A guide slide block (42) is provided in the middle of the inner end surface of the vertical support plate (8), a guide groove (44) is provided on the inner end surface of the guide slide block (42), a support slide block (23) is provided on the upper end of the fixed support block (10), and a pipeline support block (26) is provided outside the upper end of the support slide block (23).

5. A thin-wall seamless steel pipe precision straightening device according to claim 4, characterized in that: A pipeline support pulley (27) is provided in the middle of the upper end of the pipeline support block (26), a support slide groove (28) is provided at the lower end of the pipeline support block (26), an adjustment groove (22) is provided at the upper end of the fixed support block (10), and a partition support plate (29) is provided in the middle of the adjustment groove (22); A small motor (24) is provided on one side of the outer end surface of the fixed support block (10); an output shaft of the small motor (24) passes through the end surface of the adjustment groove (22) and extends into the interior thereof; and a bidirectional screw rod (25) is provided on the output shaft of the small motor (24) inside the adjustment groove (22).

6. A thin-wall seamless steel pipe precision straightening device according to claim 5, characterized in that: The outer end surface of the bidirectional screw (25) is provided with a screw connecting block (30), the upper end of the bottom straightening support block (11) is provided with a straightening lifting block (34), and the lower side of the inner end surface of the straightening lifting block (34) is provided with a straightening telescopic rod (35); A straightening support pad (36) is provided at the upper end of the straightening lifting block (34), an L bracket (38) is provided on one side of the outer end surface of the bottom straightening support block (11), and a pressure detector (39) is provided on one side of the upper end of the L bracket (38).

7. A thin-wall seamless steel pipe precision straightening device according to claim 6, characterized in that: A pressure detection rod (40) is provided on one side of the pressure detector (39), a mounting ear plate (31) is provided on the lower side of the outer end of the bottom straightening support block (11), and a locking threaded rod (33) is provided on the upper end of the square slider (32); The locking threaded rod (33) passes through the vertical adjustment groove (20) and the end surface of the mounting ear plate (31), and the locking threaded rod (33) is connected to the mounting ear plate (31) through a locking nut. A thin-walled steel pipe (9) is provided on the outside of the upper end of the bottom straightening support block (11).

8. A thin-wall seamless steel pipe precision straightening device according to claim 2, characterized in that: The first electric telescopic rod (12) is electrically connected to an external control device, and the clamping brackets (37) are provided in two numbers and are arranged in a mirror image state on both sides of the vertical central axis of the straightening workbench (1) in the main viewing direction; The bottom support plate (2), the fixed support block (10) and the bottom straightening support block (11) are all provided in plurality and are arranged in an array on both sides of the vertical central axis in the main viewing direction of the straightening workbench (1).

9. A thin-wall seamless steel pipe precision straightening device according to claim 7, characterized in that: The inner end surface of the supporting slide groove (28) is matched with the outer end surface of the supporting slider (23), the pressure detector (39) is electrically connected to the external control device, the outer end surface of the square slider (32) is matched with the inner end surface of the limiting slide groove (19), and the inner end surface of the concave adjustment groove (21) is matched with the outer end surface of the adjustment support plate (17); The number of the adjusting rollers (18) is multiple and they are arranged in an array state on both sides of the vertical center axis of the adjusting support plate (17) in the main viewing direction. The number of the square slider (32) and the locking threaded rod (33) are both two and they are arranged in a mirror image state on both sides of the vertical center axis of the bottom straightening support block (11) in the right viewing direction.

10. The method for using the thin-walled seamless steel pipe precision straightening device according to any one of claims 1 to 9, wherein the specific steps are as follows: S1: The staff places the thin-walled steel pipe (9) on the upper end of the bottom straightening support block (11), and places one end of the thin-walled steel pipe (9) on the upper end of the pipe support pulley (27), and then drives the first electric telescopic rod (12) to work through the external control device. The first electric telescopic rod (12) drives the clamping adjustment rod (13) to adjust the angle, so that the clamping roller (41) on the inner side of the clamping plate (14) is pressed against the upper end of the thin-walled steel pipe (9); S2: The pressure detection rod (40) will be attached to the lower side of the outer end surface of the thin-walled steel pipe (9), and then when the thin-walled steel pipe (9) rotates, the straightening telescopic rods (35) on the inner side of the bottom straightening support blocks (11) on both sides of the raised part of the thin-walled steel pipe (9) will drive the straightening support pads (36) to rise; S3: When the pressure detection rod (40) detects the raised part of the thin-walled steel pipe (9), the straightening gantry (5) will move to the corresponding position, and the straightening hydraulic telescopic rod (6) will drive the straightening pressing block (7) to press down, thereby straightening and pressing the thin-walled steel pipe (9); S4: After pressing, the thin-walled steel pipe (9) is rotated again, and the steel pipe is re-tested through the pressure detection rod (40) and the pressure detector (39). After the test is completed, the staff can drive the clamping adjustment rod (13) to tilt in the opposite direction through the first electric telescopic rod (12), so that the clamping roller (41) is separated from the upper end of the thin-walled steel pipe (9), and then the thin-walled steel pipe (9) can be removed.

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