New energy ship pipeline fixing support and fixing method thereof

Abstract

The invention discloses a new energy ship pipeline fixing support and a fixing method thereof, and relates to the technical field of pipeline fixing.The new energy ship pipeline fixing support comprises a U-shaped transverse plate, a plurality of translation plates are arranged in an opening of the U-shaped transverse plate, an arc-shaped supporting plate is arranged above the translation plates, and a pair of arc-shaped clamping grooves are formed in the two sides of the bottom face of the arc-shaped supporting plate; a pair of arc-shaped sliding plates are clamped in the pair of arc-shaped clamping grooves in a sliding mode, an arc-shaped clamping plate is fixedly arranged at the top end of each arc-shaped sliding plate, and the arc-shaped supporting plate and the pair of arc-shaped clamping plates form an annular clamping cavity; and a pipeline is placed above the U-shaped transverse plate and is inserted into the annular clamping cavities in a penetrating manner. By means of the annular clamping cavity, the pipeline can be evenly stressed in all radial directions in the circumferential direction, and three-dimensional stress balance is achieved; the distance between the translation plates is adjusted according to the length of the pipeline, the clamping force can be evenly distributed in the length direction of the pipeline, and the translation plates and the clamping force jointly ensure that the pipeline can be stably clamped in all directions.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline fixing, and in particular to a new energy ship pipeline fixing bracket and a fixing method thereof. Background Art

[0002] The pipeline system in ships is an important infrastructure for transporting various fluids such as fuel, fresh water, compressed air, etc. As ships sail farther and farther, the size of the hull and the load increase, higher requirements are placed on the stability and safety of ships.

[0003] During the design and installation of ship pipelines, the pipeline fixing brackets are difficult to adapt to the dynamic changes of the ship in the marine environment. Especially in severe weather conditions, there is a risk of the fixing brackets falling off. After long-term use, the supporting capacity and strength of the fixing brackets will gradually decrease, and the safety will also be reduced accordingly. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a new energy ship pipeline fixing bracket and a fixing method thereof.

[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] A new energy ship pipeline fixing bracket, comprising a U-shaped transverse plate, a fixed transverse shaft is rotatably inserted in the U-shaped transverse plate and is transversely penetrated, a concentrically fixed roller is sleeved on the fixed transverse shaft, and a plurality of spiral grooves diverging from the middle to both sides are opened on the outer surface of the roller;

[0007] A plurality of equally spaced translation plates are arranged in the opening of the U-shaped horizontal plate, a limiting pin is fixedly arranged in the middle of the bottom surface of each translation plate, and the bottom end of each limiting pin is slidably engaged in the corresponding spiral groove;

[0008] A suspended arc-shaped support plate is provided above the translation plate, and a pair of fixed blocks are fixedly provided on the front and rear sides of the bottom of the arc-shaped support plate, and the bottom end of each fixed block is fixedly connected to the corresponding translation plate;

[0009] A pair of arc-shaped slots are provided on both sides of the bottom surface of the arc-shaped support plate, and a pair of arc-shaped slide plates staggered front and back are slidably engaged inside the pair of arc-shaped slots, and an arc-shaped clamping plate is fixed on the top end of each of the arc-shaped slide plates, and the arc-shaped support plate and the pair of arc-shaped clamping plates form an annular clamping cavity;

[0010] Transversely distributed pipes are placed above the U-shaped horizontal plate, and the pipes are inserted through a plurality of annular clamping cavities.

[0011] Preferably, a first motor with its output end facing inward is installed in the middle of the right side of the U-shaped horizontal plate, and the motor shaft end of the first motor is fixedly connected to the right end of the fixed horizontal axis.

[0012] Preferably, a pair of parallel fixed slide bars are fixed in the U-shaped cross plate, and fixed slide holes are opened on the front and rear sides of each translation plate, and each fixed slide bar slides through and is inserted into the fixed slide hole on the corresponding side in turn.

[0013] Preferably, the bottom section of each of the arc-shaped skateboards is fixed with an arc-shaped rack, and a pair of fixed ear seats are fixed on the left and right sides of the top surface of the translation plate. A driven shaft is rotatably inserted in the top portion of each of the fixed ear seats, and a concentrically fixed driven gear is sleeved on the middle portion of each of the driven shafts, and each of the driven gears is meshed and connected with the arc-shaped rack on the adjacent side.

[0014] Preferably, the inner end of each driven shaft is sleeved with a concentrically fixed driven bevel gear, a central shaft is rotatably inserted in the middle of the top surface of the translation plate, and the top end of the central shaft is sleeved with a concentrically fixed active bevel gear, and the active bevel gear is respectively meshed and connected with a pair of adjacent driven bevel gears.

[0015] Preferably, a concentrically fixed driving gear is sleeved in the middle of the central axis, a first rectangular ring is fixed to the bottom of a side wall of a fixed block at the rear, a first rack is slidably inserted inside the first rectangular ring and is meshed with the driving gear.

[0016] Preferably, a laterally distributed U-shaped rail is provided behind several of the translation plates, a vertically distributed connecting plate is fixed to the rear end of the first rack, an I-shaped slider is fixed to the bottom end of the connecting plate, and several of the I-shaped sliders are slidably engaged in the U-shaped rail.

[0017] Preferably, a pair of second rectangular rings are fixedly provided at the top of the rear sides of the two side surfaces of the U-shaped cross plate, and a pair of vertically distributed second racks are fixedly provided at the two ends of the U-shaped rail, and each of the second racks is slidably inserted into the corresponding second rectangular ring.

[0018] Preferably, a pair of square through holes are opened on both sides of the U-shaped cross plate, and a second motor with the output end facing outward is installed inside each of the square through holes. The end of the motor shaft of each of the second motors is sleeved with a concentrically fixed driving gear, and each of the driving gears is meshed and connected with the second rack on the adjacent side.

[0019] The present invention also proposes a method for fixing a new energy ship pipeline fixing bracket, comprising the following steps:

[0020] Step 1: According to the length of the pipeline, the spacing between the plurality of translation plates is adjusted. Under the driving action of the first motor, the motor shaft of the first motor drives the fixed horizontal shaft and the roller to rotate synchronously. Under the limiting action of the limiting pin shaft and the spiral groove, the plurality of translation plates are driven to slide along a pair of fixed slide bars, and the I-shaped slide block is driven to slide along the U-shaped rail synchronously.

[0021] Step 2: Place the pipes on a plurality of arc-shaped support plates. Under the driving action of a pair of second motors, the motor shafts of the second motors drive the driving gears to rotate synchronously. The driving gears mesh and drive the second rack to slide along the second rectangular ring, and synchronously drive the U-shaped rail, the I-shaped slider, the connecting plate, and the first rack to slide along the first rectangular ring.

[0022] Step three, the first rack meshes to drive the driving gear, the center shaft, and the driving bevel gear to rotate, and the driving bevel gear meshes again to drive a pair of driven bevel gears to rotate forward and reversely, and the driven bevel gear drives the driven shaft and the driven gear to rotate synchronously, and the driven gear meshes again to drive the arc-shaped rack, the arc-shaped slide plate, and the arc-shaped clamping plate to slide along the arc-shaped slide groove, so that the arc-shaped support plate and the pair of arc-shaped clamping plates form an annular clamping cavity, and clamp and fix the pipeline.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, when the spacing between the translation plates is reasonably adjusted according to the length of the pipeline, the annular clamping cavity can be fully in contact with the pipeline surface. When clamping the pipeline, the clamping force can be more evenly distributed on the pipeline, avoiding the phenomenon of sliding or shaking of the pipeline during the clamping process due to uneven local force;

[0025] 2. In the present invention, due to the characteristics of the annular clamping, the stress distribution on the pipe surface is more uniform, and there will be no stress concentration at a specific point as in some local clamping methods. The annular clamping can ensure fixation while avoiding local deformation of the pipe 5 due to improper clamping, thereby maintaining the original shape and performance of the pipe;

[0026] In summary, the annular clamping cavity of the present invention can make the pipeline evenly stressed in all radial directions from the circumferential direction, thereby achieving three-dimensional force balance; the translation plate adjusts the spacing according to the length of the pipeline so that the clamping force can be evenly distributed in the length direction of the pipeline. The two together ensure that the pipeline can be stably clamped in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a rear view schematic diagram of the overall structure of the present invention;

[0030] Figure 3 It is a schematic diagram of pipeline fixing of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of a U-shaped horizontal plate and a plurality of translation plates of the present invention;

[0032] Figure 5 It is an exploded schematic diagram of the U-shaped horizontal plate and a plurality of translation plates structure of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of a U-shaped support plate and a pair of arc-shaped clamping plates of the present invention;

[0034] Figure 7 It is an exploded schematic diagram of the U-shaped support plate and a pair of arc-shaped clamping plates structure of the present invention;

[0035] Serial numbers in the figure: 1. U-shaped horizontal plate; 11. Fixed horizontal axis; 12. Roller; 13. Spiral groove; 14. Limit pin; 15. First motor; 16. Fixed slide rod; 2. Translation plate; 21. Fixed block; 22. Arc support plate; 23. Arc slide plate; 24. Arc clamping plate; 25. Arc rack; 26. Fixed ear seat; 27. Driven shaft; 28. Driven gear; 29. ​​Driven bevel gear; 3. Center shaft; 31. Active bevel gear; 32. Active gear; 33. First rectangular ring; 34. First rack; 35. Connecting plate; 36. I-shaped slide block; 4. U-shaped rail; 41. Second rectangular ring; 42. Second rack; 43. Second motor; 44. Driving gear; 5. Pipeline. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Embodiment 1: This embodiment provides a new energy ship pipeline fixing bracket, see Figure 1-7Specifically, it includes a U-shaped cross plate 1, in which a fixed cross shaft 11 is rotatably inserted and distributed transversely through the U-shaped cross plate 1, and a concentrically fixed roller 12 is sleeved on the fixed cross shaft 11, and a plurality of spiral grooves 13 are provided on the outer surface of the roller 12, which diverge from the middle to both sides; a plurality of equidistantly distributed translation plates 2 are arranged in the opening of the U-shaped cross plate 1, and a limiting pin 14 is fixedly provided in the middle of the bottom surface of each translation plate 2, and the bottom end of each limiting pin 14 is slidably engaged in the corresponding spiral groove 13, and under the limiting action of the limiting pin 14 and the spiral groove 13, the plurality of translation plates 2 are driven to translate equidistantly; a suspended arc-shaped supporting plate 22 is provided above the translation plate 2, and a pair of fixed blocks 21 are fixedly provided on the front and rear sides of the bottom of the arc-shaped supporting plate 22, and the bottom end of each fixed block 21 is fixedly connected to the corresponding translation plate 2;

[0038] Specifically, a pair of arc-shaped slots are provided on both sides of the bottom surface of the arc-shaped support plate 22, and a pair of arc-shaped slide plates 23 staggered front and back are slidably engaged in the inner part of the pair of arc-shaped slots, and an arc-shaped clamping plate 24 is fixed on the top end of each arc-shaped slide plate 23, and the arc-shaped support plate 22 and the pair of arc-shaped clamping plates 24 form an annular clamping cavity;

[0039] Specifically, a transversely distributed pipe 5 is placed above the U-shaped horizontal plate 1 , and the pipe 5 is inserted through a plurality of annular clamping cavities, and the pipe 5 is clamped and fixed.

[0040] Embodiment 2: Based on Embodiment 1, this embodiment further includes:

[0041] In the specific implementation process, Figure 4 and Figure 5 As shown, a first motor 15 with an output end facing inward is installed in the middle of the right side of the U-shaped cross plate 1, and the motor shaft end of the first motor 15 is fixedly connected to the right end of the fixed cross shaft 11, and the motor shaft of the first motor 15 drives the fixed cross shaft 11 and the roller 12 to rotate synchronously; a pair of parallel fixed slide bars 16 are fixedly arranged in the U-shaped cross plate 1, and fixed slide holes are opened on the front and rear sides of each translation plate 2, and each fixed slide bar 16 slides through and is inserted into the fixed slide hole on the corresponding side in turn, and the translation plate 2 slides along the pair of fixed slide bars 16; by adjusting the spacing between the translation plates 2, the annular clamping cavity and the surface of the pipe 5 can be better adapted to fit more closely, and the spacing between several translation plates 2 is appropriate, the pipe 5 can be subjected to stable force in all directions, and pipes 5 of different lengths and specifications can be handled, and effective clamping can be achieved by adjusting the spacing between the translation plates 2, thereby reducing the cost of equipping a variety of special clamping equipment due to different lengths of the pipe 5.

[0042] Embodiment 3: Based on Embodiment 2, this embodiment further includes:

[0043] In the specific implementation process, Figure 6 and Figure 7As shown, the bottom section of each arc-shaped slide plate 23 is fixed with an arc-shaped rack 25, and a pair of fixed ear seats 26 are fixed on the left and right sides of the top surface of the translation plate 2. A driven shaft 27 is rotatably inserted at the top end of each fixed ear seat 26, and a concentrically fixed driven gear 28 is sleeved on the middle part of each driven shaft 27. Each driven gear 28 is meshed and connected with the arc-shaped rack 25 on the adjacent side, and the driven gear 28 is meshed to drive the arc-shaped rack 25, the arc-shaped slide plate 23, and the arc-shaped clamping plate 24 to slide along the arc-shaped slide groove;

[0044] Specifically, a concentrically fixed driven bevel gear 29 is sleeved on the inner end of each driven shaft 27, and the driven bevel gear 29 drives the driven shaft 27 and the driven gear 28 to rotate synchronously. A central shaft 3 is rotatably inserted in the middle of the top surface of the translation plate 2, and a concentrically fixed driving bevel gear 31 is sleeved on the top end of the central shaft 3. The driving bevel gear 31 is respectively meshed and connected with a pair of adjacent driven bevel gears 29, and the driving bevel gear 31 is meshed and drives the pair of driven bevel gears 29 to rotate forward and backward.

[0045] Specifically, a concentrically fixed driving gear 32 is sleeved in the middle of the central shaft 3, a first rectangular ring 33 is fixed at the bottom of one side wall of the fixed block 21 at the rear, a first rack 34 is slidably inserted inside the first rectangular ring 33, the U-shaped rail 4, the I-shaped slider 36, the connecting plate 35, and the first rack 34 slide along the first rectangular ring 33, the first rack 34 is meshed and connected with the driving gear 32, and the meshing of the first rack 34 drives the driving gear 32, the central shaft 3, and the driving bevel gear 31 to rotate;

[0046] The advantage of this embodiment is that the annular clamping cavity can apply a clamping force to the pipe 5 from the circumferential direction. Compared with other forms of clamping methods, this annular structure can make the pipe 5 be subjected to uniform force in all radial directions, thereby achieving three-dimensional force balance.

[0047] Embodiment 4: Based on Embodiment 3, this embodiment further includes:

[0048] In the specific implementation process, Figure 6 and Figure 7As shown, a U-shaped rail 4 distributed laterally is provided at the rear of the plurality of translation plates 2, a connecting plate 35 distributed vertically is fixedly provided at the rear end of the first rack 34, an I-shaped slider 36 is fixedly provided at the bottom end of the connecting plate 35, and a plurality of I-shaped sliders 36 are slidably engaged in the U-shaped rail 4, and the I-shaped slider 36 slides along the U-shaped rail 4; a pair of second rectangular rings 41 are fixedly provided at the top of the rear sides of the two side surfaces of the U-shaped horizontal plate 1, and a pair of second racks 42 distributed vertically are fixedly provided at the two ends of the U-shaped rail 4, and each second rack 42 is The U-shaped horizontal plate 1 is inserted into the corresponding second rectangular ring 41 through sliding; a pair of square through holes are opened on both sides of the U-shaped horizontal plate 1, and a second motor 43 with an output end facing outward is installed inside each square through hole, and the motor shaft of the second motor 43 drives the driving gear 44 to rotate synchronously, and the motor shaft end of each second motor 43 is sleeved with a concentric fixed driving gear 44, and each driving gear 44 is meshed with the second rack 42 on the adjacent side, and the driving gear 44 meshes and drives the second rack 42 to slide along the second rectangular ring 41;

[0049] By tightly surrounding the pipe 5 with the shaped clamping cavity, the vibration of the pipe 5 can be effectively suppressed. When the fluid flow rate and pressure fluctuations in the pipe 5 are large, this clamping method can firmly fix the pipe 5 and reduce problems such as fatigue damage to the pipe 5 and loose connections caused by vibration.

[0050] Specifically, the working principle and operation method of the present invention are as follows:

[0051] Step 1: According to the length of the pipeline 5, the spacing between the plurality of translation plates 2 is adjusted. Under the driving action of the first motor 15, the motor shaft of the first motor 15 drives the fixed horizontal shaft 11 and the roller 12 to rotate synchronously. Under the limiting action of the limiting pin 14 and the spiral groove 13, the plurality of translation plates 2 are driven to slide along a pair of fixed slide bars 16, and the I-shaped slide block 36 is synchronously driven to slide along the U-shaped rail 4.

[0052] Step 2: Place the pipe 5 on a plurality of arc-shaped support plates 22. Under the driving action of a pair of second motors 43, the motor shaft of the second motor 43 drives the driving gear 44 to rotate synchronously. The driving gear 44 meshes and drives the second rack 42 to slide along the second rectangular ring 41, and synchronously drives the U-shaped rail 4, the I-shaped slider 36, the connecting plate 35, and the first rack 34 to slide along the first rectangular ring 33.

[0053] Step three, the first rack 34 meshes to drive the driving gear 32, the central shaft 3, and the driving bevel gear 31 to rotate, and the driving bevel gear 31 then meshes to drive a pair of driven bevel gears 29 to rotate forward and reversely, and the driven bevel gear 29 drives the driven shaft 27 and the driven gear 28 to rotate synchronously, and the driven gear 28 meshes again to drive the arc rack 25, the arc slide plate 23, and the arc clamping plate 24 to slide along the arc slide groove, so that the arc support plate 22 and the pair of arc clamping plates 24 form an annular clamping cavity, and clamp the pipe 5 to fix it.

[0054] The annular clamping cavity of the present invention can make the pipe 5 evenly stressed in all radial directions from the circumferential direction, thereby achieving three-dimensional force balance; the translation plate 2 can adjust the spacing according to the length of the pipe 5 to make the clamping force evenly distributed in the length direction of the pipe 5. The two together ensure that the pipe 5 can be stably clamped in all directions.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy ship pipeline fixing bracket, comprising a U-shaped transverse plate (1), characterized in that: A fixed horizontal shaft (11) is rotatably inserted in the U-shaped horizontal plate (1), and a roller (12) is coaxially fixedly mounted on the fixed horizontal shaft (11). A plurality of spiral grooves (13) are formed on the outer surface of the roller (12) and diverge from the middle to both sides. A plurality of equally spaced translation plates (2) are arranged in the opening of the U-shaped horizontal plate (1), a limiting pin (14) is fixedly arranged in the middle of the bottom surface of each translation plate (2), and the bottom end of each limiting pin (14) is slidably engaged in the corresponding spiral groove (13); A suspended arc-shaped support plate (22) is provided above the translation plate (2), and a pair of fixed blocks (21) are fixedly provided on the front and rear sides of the bottom of the arc-shaped support plate (22), and the bottom end of each fixed block (21) is fixedly connected to the corresponding translation plate (2); A pair of arc-shaped slots are provided on both sides of the bottom surface of the arc-shaped support plate (22), a pair of arc-shaped slide plates (23) staggeredly arranged front and back are slidably engaged inside the pair of arc-shaped slots, an arc-shaped clamping plate (24) is fixedly provided at the top end of each arc-shaped slide plate (23), and the arc-shaped support plate (22) and the pair of arc-shaped clamping plates (24) form an annular clamping cavity; A transversely distributed pipe (5) is placed above the U-shaped horizontal plate (1), and the pipe (5) is inserted through a plurality of annular clamping cavities.

2. A new energy ship pipeline fixing bracket according to claim 1, characterized in that: A first motor (15) with an output end facing inward is installed in the middle of the right side of the U-shaped horizontal plate (1), and the motor shaft end of the first motor (15) is fixedly connected to the right end of the fixed horizontal axis (11).

3. A new energy ship pipeline fixing bracket according to claim 2, characterized in that: A pair of parallel fixed slide bars (16) are fixedly arranged in the U-shaped horizontal plate (1), and fixed slide holes are opened on the front and rear sides of each translation plate (2), and each fixed slide bar (16) is slidably inserted into the fixed slide hole on the corresponding side in sequence.

4. A new energy ship pipeline fixing bracket according to claim 3, characterized in that: The bottom section of each arc-shaped slide plate (23) is fixedly provided with an arc-shaped rack (25), and a pair of fixed ear seats (26) are fixedly provided on the left and right sides of the top surface of the translation plate (2). A driven shaft (27) is rotatably inserted into the top end of each fixed ear seat (26), and a concentrically fixed driven gear (28) is sleeved in the middle of each driven shaft (27), and each driven gear (28) is meshedly connected with the arc-shaped rack (25) on the adjacent side.

5. A new energy ship pipeline fixing bracket according to claim 4, characterized in that: The inner end of each driven shaft (27) is sleeved with a concentrically fixed driven bevel gear (29); a central shaft (3) is rotatably inserted in the middle of the top surface of the translation plate (2); a concentrically fixed driving bevel gear (31) is sleeved on the top end of the central shaft (3); and the driving bevel gear (31) is respectively meshed and connected with a pair of adjacent driven bevel gears (29).

6. A new energy ship pipeline fixing bracket according to claim 5, characterized in that: A concentrically fixed driving gear (32) is sleeved in the middle of the central shaft (3), a first rectangular ring (33) is fixedly provided at the bottom of a side wall of a fixed block (21) located at the rear, a first rack (34) is slidably inserted inside the first rectangular ring (33) and is distributed through the first rack (34), and the first rack (34) is meshedly connected with the driving gear (32).

7. A new energy ship pipeline fixing bracket according to claim 6, characterized in that: A U-shaped rail (4) distributed laterally is arranged behind the plurality of translation plates (2); a connecting plate (35) distributed vertically is fixedly arranged at the rear end of the first rack (34); an I-shaped slider (36) is fixedly arranged at the bottom end of the connecting plate (35); and the plurality of I-shaped sliders (36) are all slidably engaged in the U-shaped rail (4).

8. A new energy ship pipeline fixing bracket according to claim 7, characterized in that: A pair of second rectangular rings (41) are fixedly provided at the top of the rear sides of the two side surfaces of the U-shaped cross plate (1), and a pair of vertically distributed second racks (42) are fixedly provided at the two ends of the U-shaped rail (4), and each of the second racks (42) is slidably inserted into the corresponding second rectangular ring (41).

9. A new energy ship pipeline fixing bracket according to claim 8, characterized in that: A pair of square through holes are provided on both sides of the U-shaped horizontal plate (1), and a second motor (43) with an output end facing outward is installed inside each of the square through holes. A concentrically fixed driving gear (44) is sleeved on the motor shaft end of each of the second motors (43), and each of the driving gears (44) is meshedly connected to the second rack (42) on an adjacent side.

10. A method for fixing a new energy ship pipeline fixing bracket according to claim 9, characterized in that: The following steps are involved: Step 1: According to the length of the pipeline (5), the spacing of the plurality of translation plates (2) is adjusted. Under the driving action of the first motor (15), the motor shaft of the first motor (15) drives the fixed horizontal shaft (11) and the roller (12) to rotate synchronously. Under the limiting action of the limiting pin shaft (14) and the spiral groove (13), the plurality of translation plates (2) are driven to slide along a pair of fixed sliding rods (16), and the I-shaped sliding block (36) is driven to slide along the U-shaped rail (4) synchronously. Step 2: placing the pipe (5) on a plurality of arc-shaped support plates (22); under the driving action of a pair of second motors (43), the motor shaft of the second motor (43) drives the driving gear (44) to rotate synchronously; the driving gear (44) meshes and drives the second rack (42) to slide along the second rectangular ring (41), and synchronously drives the U-shaped rail (4), the I-shaped slider (36), the connecting plate (35), and the first rack (34) to slide along the first rectangular ring (33); Step 3: The first rack (34) meshes to drive the driving gear (32), the central shaft (3), and the driving bevel gear (31) to rotate, and the driving bevel gear (31) meshes to drive a pair of driven bevel gears (29) to rotate forward and reverse, and the driven bevel gear (29) drives the driven shaft (27) and the driven gear (28) to rotate synchronously, and the driven gear (28) meshes to drive the arc rack (25), the arc slide plate (23), and the arc clamping plate (24) to slide along the arc slide groove, so that the arc support plate (22) and the pair of arc clamping plates (24) form an annular clamping cavity, and the pipe (5) is clamped and fixed.

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