An adjustable pipe clamping device for PE pipes

Abstract

The present invention discloses an adjustable pipe clamping device for PE pipes, which relates to the technical field of pipe clamping, and includes a fixed frame, wherein two sliding frames are slidably connected to the fixed frame, and the bottom ends of the two sliding frames are fixedly connected to a fixed cylinder. The present invention provides a clamping mechanism. During the process of lifting the pipe, the pipe drives the sliding rod and the piston to move downward through the fixed pipe under the action of gravity, so that the hydraulic oil drives the movable rod, the movable column and the arc clamp to move outward. The multiple arc clamps move outward to contact the inner wall of the pipe, thereby fixing the pipe. When the pressure valve is opened, the butt joint pipe and the butt joint rod are connected into one. As the butt joint rod continues to enter, the mounting blocks on the butt joint pipe and the butt joint rod contact and expand outward until the mounting blocks contact the inner wall of the pipe, thereby enabling auxiliary clamping of the pipe, achieving the ability to clamp pipes of different weights and improving the clamping effect of the pipe.

Description

Technical Field

[0001] The invention relates to the technical field of pipe clamping, in particular to an adjustable pipe clamping device for PE pipes. Background Art

[0002] During the process of cutting the PE pipe, the PE pipe needs to be hoisted onto the cutting machine, and the PE pipe needs to be fixed and clamped during the hoisting process.

[0003] A Chinese patent with publication number CN214192212U discloses a lifting clamp and a crane, wherein the lifting clamp includes a flexible member and a pair of clamping arms, the middle parts of the pair of clamping arms are hinged so that the pair of clamping arms can rotate relative to each other, and the flexible member is respectively connected to the top of the pair of clamping arms. The flexible member is configured to be deformed under the action of external force and drive the tops of the pair of clamping arms to approach or move away from each other, so that the bottoms of the pair of clamping arms can rotate accordingly to approach each other to clamp the object to be lifted or move away from each other to release the object to be lifted.

[0004] Based on the above search and combined with existing technologies, it was found that during the lifting process, PE pipes need to be clamped and fixed using clamps. The diameter, wall thickness and surface condition of existing PE pipes vary greatly. Traditional clamps are difficult to dynamically adjust the clamping force, resulting in unstable clamping effect. In addition, most clamps rely on manual adjustment or preset parameters, lack real-time feedback mechanism, and cannot automatically adjust the clamping force according to the weight of the pipe, resulting in poor safety. Summary of the Invention

[0005] The object of the present invention is to provide an adjustable pipe clamping device for PE pipes to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: an adjustable pipe clamping device for PE pipes, comprising a fixed frame, two sliding frames slidably connected to the fixed frame, and a fixing cylinder fixedly connected to the bottom ends of the two sliding frames, and further comprising:

[0007] A controller, wherein the controller is fixedly connected to the fixing frame;

[0008] a clamping mechanism, the clamping mechanism being located on the fixing frame;

[0009] The camming mechanism comprises a driving unit, a clamping unit, a docking unit and an extrusion unit, wherein the clamping unit comprises a piston 1 respectively slidably connected to the two fixed cylinders, the bottoms of the two pistons 1 are fixedly connected to a sliding rod, the two sliding rods are respectively slidably connected to the two fixed cylinders, the bottom ends of the two sliding rods are respectively fixedly connected to a fixed tube, the two fixed cylinders are respectively fixedly connected to an oil inlet pipe together with the two fixed tubes, the two fixed tubes are fixedly connected to a plurality of mounting tubes, the plurality of mounting tubes are slidably connected to movable rods, the plurality of movable rods are slidably connected to movable columns, one end of the plurality of movable columns is fixedly connected to an arc clamp, the inner walls of the plurality of movable rods are fixedly connected to pressure sensors, and the interiors of the plurality of movable rods are provided with telescopic springs, the two ends of the telescopic springs are respectively fixedly connected to the movable column and the pressure sensor, and the controller is electrically connected to the pressure sensor.

[0010] Preferably, a telescopic column is fixedly connected to the top inner wall of the fixed cylinder, the bottom end of the telescopic column is fixedly connected to piston one, a return spring is sleeved on the telescopic column, and both ends of the return spring are fixedly connected to piston one and the fixed cylinder respectively.

[0011] Preferably, the tops of the two fixed cylinders are fixedly connected to electric telescopic rods, the bottom ends of the electric telescopic rods are fixedly connected to fixed rods, the bottom ends of the fixed rods are in contact with the top of piston one, and the electric telescopic rods are electrically connected to the controller.

[0012] Preferably, the docking unit includes a docking tube and a docking rod respectively slidably connected to one end of the two fixed tubes, one end of the docking tube and the docking rod are fixedly connected to piston 2, the two pistons 2 are respectively slidably connected in the two fixed tubes, and the docking tube and the docking rod are fixedly connected to multiple fixed blocks, multiple fixed blocks are rotatably connected to rotating rods, the top ends of multiple rotating rods are rotatably connected to axle pins, and multiple axle pins are fixedly sleeved with mounting blocks.

[0013] Preferably, a plurality of the axle pins are sleeved with a torsion spring, and two ends of the torsion spring are fixedly connected to the rotating rod and the axle pin respectively.

[0014] Preferably, a plurality of spring plates are fixedly connected to the docking tube and the docking rod, and one end of the plurality of spring plates is respectively fixedly connected to the plurality of rotating rods.

[0015] Preferably, the extrusion unit includes an L-shaped tube fixedly connected to the two fixed tubes, one end of the two L-shaped tubes is slidably connected to a sliding piston rod, one end of the two sliding piston rods is fixedly connected to a splint, the two L-shaped tubes are respectively fixedly connected to the two oil inlet pipes with a branch pipe, and a pressure valve is installed on the two fixed tubes.

[0016] Preferably, a connecting spring is sleeved on each of the two sliding piston rods, and two ends of the connecting spring are fixedly connected to the L-shaped tube and the clamping plate respectively.

[0017] Preferably, the driving unit includes lifting ears fixedly connected to the two ends of the top of the fixed frame, and the two lifting ears are connected to a bidirectional threaded rod for common rotation, and the two sliding frames are fixedly connected to a connecting block at one end close to each other, and the two connecting blocks are screwed on the bidirectional threaded rod, and a driven bevel gear is fixedly sleeved on the bidirectional threaded rod, and a servo motor is fixedly connected to the fixed frame, and the output end of the servo motor is fixedly connected to a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear, and the servo motor and the controller are electrically connected.

[0018] The present invention provides an adjustable pipe clamping device for PE pipes through improvements, which has the following improvements and advantages compared with the prior art:

[0019] First, the present invention sets a clamping mechanism. During the process of lifting the pipe, the pipe drives the sliding rod and the piston downward through the fixed pipe under the action of gravity, so that the hydraulic oil in the fixed cylinder is squeezed into the fixed pipe through the oil inlet pipe, and drives the movable rod, the movable column and the arc clamp to move outward, so that multiple arc clamps move outward to resist the inner wall of the pipe, thereby fixing the pipe. When the pressure valve is opened, the butt joint pipe and the butt joint rod are connected into one. As the butt joint rod continues to enter, the butt joint pipe and the mounting blocks on the butt joint rod contact and expand outward until the mounting blocks contact the inner wall of the pipe, thereby being able to auxiliary clamp the pipe, thereby achieving the ability to clamp pipes of different weights and improving the clamping effect of the pipe.

[0020] Secondly, the present invention sets a docking unit. When the pressure is too high, the pressure valve opens, causing the hydraulic oil in the fixed pipe to squeeze the second piston to move. The movement of the two second pistons drives the docking pipe and the docking rod to move respectively, so that the docking rod enters the docking pipe, thereby connecting the two fixed pipes, the docking pipe and the docking rod into one, thereby improving the stability of the fixed pipe. As the docking rod continues to enter, the docking pipe and the docking rod move, driving the fixed block, the rotating rod and the mounting block to move. Under the elastic force of the spring piece, the mounting blocks on the docking pipe and the docking rod contact and expand outward until the mounting block contacts the inner wall of the pipe, thereby being able to assist in clamping the pipe.

[0021] Thirdly, the present invention sets an extrusion unit, so that the hydraulic oil entering the oil inlet pipe can pass through the branch pipe into the L-shaped pipe. The hydraulic oil squeezes the sliding piston rod and the clamping plate to move, so that the two clamping plates clamp and fix the pipe, thereby improving the clamping and fixing effect of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping mechanism in the present invention;

[0025] Figure 3 Schematic diagram of the internal cross-sectional three-dimensional structure of the fixed cylinder in the present invention;

[0026] Figure 4 Schematic diagram of the internal cross-sectional structure of the fixed tube in the present invention;

[0027] Figure 5 It is a schematic diagram of the cross-sectional planar structure of the butt joint pipe and the butt joint rod in the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating rod and the spring piece in the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the sliding piston rod and the clamping plate in the present invention;

[0030] Figure 8 For the present invention Figure 1 A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0031] Reference numerals:

[0032] 1. Fixed frame; 11. Sliding frame; 12. Fixed cylinder; 13. Piston 1; 14. Sliding rod; 15. Fixed tube; 16. Oil inlet pipe; 17. Mounting tube; 18. Movable rod; 19. Movable column; 110. Arc clamp; 111. Telescopic spring; 112. Pressure sensor; 2. Telescopic column; 21. Return spring; 22. Electric telescopic rod; 23. Fixed rod; 3. Pressure valve; 31. Piston 2; 32. Docking tube; 33. Docking rod; 34. Fixed block; 35. Rotating rod; 36. Axis pin; 37. Mounting block; 38. Torsion spring; 39. Shrapnel; 4. L-shaped tube; 41. Sliding piston rod; 42. Clamp; 43. Connecting spring; 44. Branch pipe; 5. Servo motor; 51. Driving bevel gear; 52. Driven bevel gear; 53. Bidirectional threaded rod; 54. Connecting block; 55. Lifting lug; 6. Controller. DETAILED DESCRIPTION

[0033] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] The present invention provides an adjustable pipe clamping device for PE pipes through improvement. The technical solution of the present invention is:

[0035] like Figures 1 to 8 As shown, an embodiment of the present invention provides an adjustable pipe clamping device for PE pipes, including a fixed frame 1, two sliding frames 11 are slidably connected to the fixed frame 1, and the bottom ends of the two sliding frames 11 are fixedly connected to a fixed cylinder 12, and further comprising:

[0036] Controller 6, controller 6 is fixedly connected to the fixing frame 1;

[0037] Clamping mechanism, the clamping mechanism is located on the fixing frame 1;

[0038] The clamping mechanism includes a driving unit, a clamping unit, a docking unit and an extrusion unit. The clamping unit includes a piston 13 which is respectively slidably connected to the two fixed cylinders 12. The bottoms of the two pistons 13 are fixedly connected to a sliding rod 14. The two sliding rods 14 are respectively slidably connected to the two fixed cylinders 12. The bottom ends of the two sliding rods 14 are fixedly connected to a fixed tube 15. The two fixed cylinders 12 are respectively fixedly connected to the two fixed tubes 15 with an oil inlet pipe 16. The two fixed tubes 15 are fixedly connected to multiple mounting tubes 17. The multiple mounting tubes 17 are slidably connected to movable rods 18. The multiple movable rods 18 are slidably connected to movable columns 19. One end of the multiple movable columns 19 is fixedly connected to an arc clamp 110. The inner walls of the multiple movable rods 18 are fixedly connected to pressure sensors 112. A telescopic spring 111 is provided inside the rod 18, and the two ends of the telescopic spring 111 are fixedly connected to the movable column 19 and the pressure sensor 112 respectively, and the controller 6 is electrically connected to the pressure sensor 112; through the setting of the clamping unit, during the lifting of the pipe, the pipe drives the sliding rod 14 to move downward in the fixed cylinder 12 through the fixed tube 15 under the action of gravity. The fixed cylinder 12 is filled with hydraulic oil. The movement of the sliding rod 14 drives the piston 13 to move downward to squeeze the hydraulic oil in the fixed cylinder 12 into the fixed tube 15 through the oil inlet pipe 16. The hydraulic oil entering the fixed tube 15 first enters multiple mounting tubes 17, so that the hydraulic oil squeezes and drives the movable rod 18, the movable column 19 and the arc clamp 110 to move outward, so that the multiple arc clamps 110 move outward to resist the inner wall of the pipe, thereby fixing the pipe.

[0039] Furthermore, a telescopic column 2 is fixedly connected to the top inner wall of the fixed cylinder 12, the bottom end of the telescopic column 2 is fixedly connected to the piston 13, a return spring 21 is sleeved on the telescopic column 2, and the two ends of the return spring 21 are respectively fixedly connected to the piston 13 and the fixed cylinder 12; by the provision of the telescopic column 2, the stability of the piston 13 is improved.

[0040] Furthermore, the tops of the two fixed cylinders 12 are fixedly connected to an electric telescopic rod 22, the bottom ends of the electric telescopic rod 22 are fixedly connected to a fixed rod 23, the bottom ends of the fixed rod 23 are in contact with the top of the piston 13, and the electric telescopic rod 22 is electrically connected to the controller 6; through the setting of the electric telescopic rod 22, the pressure sensor 112 receives the pressure signal and transmits it to the controller 6 via a wireless signal. When the pressure is lower than the set pressure standard value, the controller 6 starts the electric telescopic rod 22 to drive the fixed rod 23 to move downward, and the fixed rod 23 moves downward to squeeze the piston 13 downward until the pressure sensor 112 reaches the pressure standard value, thereby realizing active compensation for the clamping force.

[0041] When the cam 33 is in the closed position, the two ends of the cam 33 are in the closed position, and the cam 33 is in the closed position, so that the cam 33 is in the closed position and the piston 2 is pulled out of the closed position, thereby the cam 33 is in the closed position and the piston 2 is pulled out of the closed position.

[0042] Furthermore, multiple axle pins 36 are sleeved with torsion springs 38, and the two ends of the torsion springs 38 are fixedly connected to the rotating rod 35 and the axle pins 36 respectively; through the setting of the torsion springs 38, when the two mounting blocks 37 are separated, the torsion springs 38 can drive the mounting blocks 37 to reset.

[0043] Furthermore, a plurality of spring clips 39 are fixedly connected to the docking tube 32 and the docking rod 33, and one end of the plurality of spring clips 39 is respectively fixedly connected to a plurality of rotating rods 35; through the arrangement of the spring clips 39, as the docking rod 33 continues to enter, the docking tube 32 and the docking rod 33 move and drive the fixed block 34, the rotating rod 35 and the mounting block 37 to move. Under the elastic force of the spring clips 39, the mounting blocks 37 on the docking tube 32 and the docking rod 33 contact and expand outward until the mounting blocks 37 contact the inner wall of the pipe, thereby being able to assist in clamping the pipe, thereby improving the clamping effect of the pipe.

[0044] Furthermore, the extrusion unit includes an L-shaped tube 4 fixedly connected to the two fixed tubes 15 respectively, one end of the two L-shaped tubes 4 is slidably connected to a sliding piston rod 41, one end of the two sliding piston rods 41 is fixedly connected to a clamping plate 42, the two L-shaped tubes 4 are respectively fixedly connected to the two oil inlet pipes 16 with a branch pipe 44, and the two fixed tubes 15 are installed with a pressure valve 3; through the setting of the extrusion unit, the hydraulic oil entering the oil inlet pipe 16 can pass through the branch pipe 44 into the L-shaped tube 4, and the hydraulic oil squeezes the sliding piston rod 41 and the clamping plate 42 to move, so that the two clamping plates 42 clamp and fix the pipe, thereby improving the clamping and fixing effect of the pipe.

[0045] Furthermore, connecting springs 43 are sleeved on both sliding piston rods 41, and the two ends of the connecting springs 43 are fixedly connected to the L-shaped tube 4 and the clamping plate 42 respectively; through the setting of the connecting springs 43, when the hydraulic oil is drawn back into the fixed cylinder 12, the connecting springs 43 can drive the clamping plate 42 to reset.

[0046] Furthermore, the driving unit includes a lifting lug 55 fixedly connected to the two ends of the top of the fixed frame 1, and a bidirectional threaded rod 53 is connected to the two lifting lugs 55 for common rotation. The ends of the two sliding frames 11 close to each other are fixedly connected to a connecting block 54, and the two connecting blocks 54 are screwed on the bidirectional threaded rod 53. A driven bevel gear 52 is fixedly sleeved on the bidirectional threaded rod 53. The fixed frame 1 is fixedly connected to a servo motor 5, and the output end of the servo motor 5 is fixedly connected to a driving bevel gear 51, which meshes with the driven bevel gear 52. , the servo motor 5 and the controller 6 are electrically connected; through the setting of the drive unit, the servo motor 5 drives the driving bevel gear 51 to rotate, the driving bevel gear 51 drives the driven bevel gear 52 and the bidirectional threaded rod 53 to rotate, and the rotation of the bidirectional threaded rod 53 drives the connecting block 54 and the sliding frame 11 to move, so that the two sliding frames 11 are close to each other, and the movement of the sliding frame 11 drives the fixed cylinder 12, the sliding rod 14, and the fixed tube 15 to move, so that the two fixed tubes 15 enter the tube from both ends of the tube, thereby pushing the fixed tube 15 into the tube.

[0047] Specific implementation steps: The servo motor 5 drives the driving bevel gear 51 to rotate, and the driving bevel gear 51 drives the driven bevel gear 52 and the bidirectional threaded rod 53 to rotate. The rotation of the bidirectional threaded rod 53 drives the connecting block 54 and the sliding frame 11 to move, so that the two sliding frames 11 are close to each other. The movement of the sliding frame 11 drives the fixed cylinder 12, the sliding rod 14, and the fixed tube 15 to move, so that the two fixed tubes 15 enter the tube from both ends of the tube. The movement of the fixed tube 15 drives the installation tube 17, the movable rod 18, the movable column 19 and the arc clamp 110 to enter the tube. When the crane lifts the fixed frame 1, the fixed tube 15 lifts the tube through the arc clamp 110. In the process of lifting the tube, the tube drives the sliding rod 1 through the fixed tube 15 under the action of gravity. 4 moves downward in the fixed cylinder 12, which is filled with hydraulic oil. The sliding rod 14 moves and drives the piston 13 to move downward, squeezing the hydraulic oil in the fixed cylinder 12 into the fixed tube 15 through the oil inlet pipe 16. The hydraulic oil entering the fixed tube 15 first enters the multiple mounting tubes 17, so that the hydraulic oil squeezes and drives the movable rod 18, the movable column 19 and the arc clamp 110 to move outward, so that the multiple arc clamps 110 move outward to resist the inner wall of the pipe, thereby fixing the pipe. When the arc clamp 110 contacts the pipe, the arc clamp 110 stops moving, and the movable rod 18 continues to move outward. The movable rod 18 drives the pressure sensor 112 to drive the telescopic spring 111 to compress and elastically deform. At the same time, the pressure sensor 112 receives the pressure. The signal is transmitted to the controller 6 by wireless signal. When the pressure is lower than the set pressure standard value, active compensation of the clamping force is realized. The controller 6 starts the electric telescopic rod 22 to drive the fixed rod 23 to move downward. The fixed rod 23 moves downward to squeeze the piston 13 to move downward until the pressure sensor 112 reaches the pressure standard value. When the pressure is too high, the pressure valve 3 opens, so that the hydraulic oil in the fixed pipe 15 squeezes the piston 2 31 to move. The two pistons 2 31 move and respectively drive the docking pipe 32 and the docking rod 33 to move, so that the docking rod 33 enters the docking pipe 32, thereby connecting the two fixed pipes 15, the docking pipe 32 and the docking rod 33 into one, thereby improving the stability of the fixed pipe 15. As the docking rod 33 continues to enter, The butt joint tube 32 and the butt joint rod 33 are driven to move, and the fixed block 34, the rotating rod 35 and the mounting block 37 are moved. Under the elastic force of the spring piece 39, the butt joint tube 32 and the mounting block 37 on the butt joint rod 33 are in contact and expanded outwards until the mounting block 37 contacts the inner wall of the pipe, thereby assisting in clamping the pipe. During the lifting process of the pipe, the arc clamp 110 automatically opens to fix the pipe. When the pipe is heavier, the two fixed pipes 15 can be connected into one, which improves the stability of the clamp. When the pipe is heavier, the mounting block 37 expands outwards to resist the inner wall of the pipe, so that pipes of different weights can be clamped, thereby improving the clamping effect of the pipe. The hydraulic oil entering the oil inlet pipe 16 can be discharged into the L-shaped pipe 4 through the branch pipe 44.The hydraulic oil squeezes the sliding piston rod 41 and the clamping plate 42 to move, so that the two clamping plates 42 clamp and fix the pipe, thereby improving the clamping and fixing effect of the pipe.

[0048] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable pipe clamping device for PE pipes, comprising a fixing frame (1), characterized in that: The fixed frame (1) is slidably connected to two sliding frames (11), and the bottom ends of the two sliding frames (11) are fixedly connected to a fixed cylinder (12), and further comprises: A controller (6), wherein the controller (6) is fixedly connected to the fixing frame (1); A clamping mechanism, the clamping mechanism being located on the fixing frame (1); The clamping mechanism includes a driving unit, a clamping unit, a docking unit and an extrusion unit. The clamping unit includes a piston (13) slidably connected to the two fixed cylinders (12). The bottoms of the two pistons (13) are fixedly connected to a sliding rod (14). The two sliding rods (14) are slidably connected to the two fixed cylinders (12). The bottom ends of the two sliding rods (14) are fixedly connected to a fixed tube (15). The two fixed cylinders (12) and the two fixed tubes (15) are respectively fixedly connected to an oil inlet pipe (16). The two fixed tubes (15) are fixedly connected to a plurality of mounting pipes ( 17), multiple mounting tubes (17) are slidably connected to movable rods (18), multiple movable rods (18) are slidably connected to movable columns (19), one end of multiple movable columns (19) are fixedly connected to arc clamps (110), the inner walls of multiple movable rods (18) are fixedly connected to pressure sensors (112), and multiple movable rods (18) are internally provided with telescopic springs (111), the two ends of the telescopic springs (111) are fixedly connected to the movable columns (19) and the pressure sensors (112), respectively, and the controller (6) is electrically connected to the pressure sensors (112).

2. The adjustable pipe clamping device for PE pipe according to claim 1, characterized in that: The top inner wall of the fixed cylinder (12) is fixedly connected to a telescopic column (2), the bottom end of the telescopic column (2) is fixedly connected to piston one (13), a return spring (21) is sleeved on the telescopic column (2), and the two ends of the return spring (21) are fixedly connected to piston one (13) and the fixed cylinder (12), respectively.

3. The adjustable pipe clamping device for PE pipe according to claim 2, characterized in that: The tops of the two fixed cylinders (12) are fixedly connected to electric telescopic rods (22), the bottom ends of the electric telescopic rods (22) are fixedly connected to fixed rods (23), the bottom ends of the fixed rods (23) are in contact with the top of piston one (13), and the electric telescopic rods (22) are electrically connected to the controller (6).

4. The adjustable pipe clamping device for PE pipe according to claim 3, characterized in that: The docking unit comprises a docking tube (32) and a docking rod (33) respectively connected to one end of the two fixed tubes (15), one end of each of the docking tube (32) and the docking rod (33) is fixedly connected to a second piston (31), and the two second pistons (31) are respectively connected in a sliding manner in the two fixed tubes (15). The docking tube (32) and the docking rod (33) are fixedly connected to a plurality of fixed blocks (34), and the plurality of fixed blocks (34) are rotatably connected to a rotating rod (35). The top ends of the plurality of rotating rods (35) are rotatably connected to an axle pin (36), and the plurality of axle pins (36) are fixedly sleeved with a mounting block (37).

5. The adjustable pipe clamping device for PE pipe according to claim 4, characterized in that: Torsion springs (38) are sleeved on the plurality of shaft pins (36), and two ends of the torsion springs (38) are fixedly connected to the rotating rod (35) and the shaft pins (36), respectively.

6. The adjustable pipe clamping device for PE pipe according to claim 5, characterized in that: A plurality of spring pieces (39) are fixedly connected to the docking tube (32) and the docking rod (33), and one end of each of the plurality of spring pieces (39) is fixedly connected to each of the plurality of rotating rods (35).

7. The adjustable pipe clamping device for PE pipe according to claim 1, characterized in that: The extrusion unit comprises an L-shaped tube (4) fixedly connected to the two fixed tubes (15), one end of each of the two L-shaped tubes (4) is slidably connected to a sliding piston rod (41), one end of each of the two sliding piston rods (41) is fixedly connected to a clamping plate (42), the two L-shaped tubes (4) are respectively fixedly connected to the two oil inlet pipes (16) with a branch pipe (44), and the two fixed tubes (15) are both installed with a pressure valve (3).

8. The adjustable pipe clamping device for PE pipe according to claim 7, characterized in that: A connecting spring (43) is sleeved on each of the two sliding piston rods (41), and both ends of the connecting spring (43) are fixedly connected to the L-shaped tube (4) and the clamping plate (42), respectively.

9. The adjustable pipe clamping device for PE pipe according to claim 7, characterized in that: The driving unit comprises a lifting lug (55) fixedly connected to the two ends of the top of the fixing frame (1), a bidirectional threaded rod (53) being rotatably connected to the two lifting lugs (55), a connecting block (54) being fixedly connected to one end of the two sliding frames (11) close to each other, the two connecting blocks (54) being screwed onto the bidirectional threaded rod (53), a driven bevel gear (52) being fixedly sleeved on the bidirectional threaded rod (53), a servo motor (5) being fixedly connected to the fixing frame (1), an output end of the servo motor (5) being fixedly connected to a driving bevel gear (51), the driving bevel gear (51) being meshed with the driven bevel gear (52), and the servo motor (5) and the controller (6) being electrically connected.

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