MPP power tube directional hot melt butt joint precision positioning device

Abstract

This utility model relates to the field of positioning device technology, and in particular to a precision positioning device for directional thermal fusion welding of MPP power pipes. Its technical solution includes a base, a support seat, a hydraulic rod, a mounting sleeve, an oil tank, an oil cylinder, and a clamping rod. A lifting seat is provided inside the base, with nuts and sliders at both ends. A motor is installed at one end of the lifting seat, with a screw at its output end. A second motor is also installed at one end of the lifting seat. Rotating shafts are provided at both ends of the support seat. A hydraulic rod is installed at the upper end of the support seat, with mounting sleeves at both telescopic ends. A sealing ring is embedded in the inner wall of the mounting sleeve, and a clamping rod is slidably installed inside the sealing ring. A clamping block is provided at one end of the clamping rod. This utility model, with its flip-up, height-adjustable positioning shaft adapted to different specifications of MPP power pipes during thermal fusion welding, is suitable for the needs of MPP power pipe construction in foundation pits, ground suspensions, and tunnels.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, and in particular to a precision positioning device for directional hot-melt butt welding of MPP power pipes. Background Technology

[0002] MPP power conduit is a modified polypropylene cable protection pipe, a high-strength cable sleeve with polypropylene as the base material. It has the characteristics of high temperature resistance, strong pressure resistance, good insulation and corrosion resistance. It is specially used for buried power cable laying projects, and can resist external impact and extend the cable life.

[0003] During the installation of MPP power pipes, fusion welding is used. They are easily buried in pre-dug trenches or erected on pre-set supports on the ground or in tunnels. This leads to the need for frequent leveling and height adjustment. Fixed-height positioning structures have poor flexibility. To address this issue, we propose a precision positioning device for directional thermal fusion butt welding of MPP power pipes. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a precision positioning device for directional thermal fusion butt welding of MPP power pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A precision positioning device for directional hot-melt butt welding of MPP power pipes, comprising a base, a support seat, hydraulic rods, mounting sleeves, an oil tank, an oil cylinder, and clamping rods. The base contains a lifting seat, with a nut and a slider at each end. A motor is installed at one end of the lifting seat, with a screw threadedly connected to the nut at its output end. A guide rail is slidably mounted on the slider on one side of the upper end of the base. A second motor is installed at one end of the lifting seat. A support seat is also installed inside the lifting seat, with rotating shafts at both ends of the support seat, one end of which is connected to the output end of the second motor and rotatably mounted inside the lifting seat. Two sets of symmetrically distributed hydraulic rods are installed at the upper end of the support seat, each with a mounting sleeve at its telescopic end. A sealing ring is embedded in the inner wall of each mounting sleeve, and a clamping rod is slidably mounted inside the sealing ring. A clamping block is installed at one end of the clamping rod.

[0006] Preferably, a bearing bracket is provided at the upper end of the base, and the upper end of the screw is rotatably mounted inside the bearing bracket. When the screw rotates, it receives rotational support through the upper end of the bearing bracket, thereby improving the stability of the screw's rotation.

[0007] Preferably, the base is frame-shaped and has pulleys at all four corners of its lower end. The frame-shaped space inside the base allows for the rotation of the support plate and the longitudinal movement of the lifting seat, while the pulleys provide sliding support for the base, facilitating its movement.

[0008] Preferably, an electromagnetic brake is fitted onto the outer side of the second output terminal of the motor. The electromagnetic brake fixes the motor after it rotates at the second output terminal.

[0009] Preferably, the mounting sleeve contains a ring-shaped array of oil cylinders. A piston, slidably mounted inside one end of the clamping rod, is located at one end of each oil cylinder. An arc-shaped tube, penetrating the mounting sleeve at one end, connects the oil cylinders, and a flexible hose is attached to one end of the arc-shaped tube. The oil cylinders provide sliding support for the piston, and the hydraulic oil pressure on the piston facilitates adjustment of the clamping rod's position. The flexible hose allows hydraulic oil to be supplied to the arc-shaped tube as the mounting sleeve moves. The pressure applied by the hydraulic oil is distributed to the other oil cylinders through the arc-shaped tube and then applied to the piston.

[0010] Preferably, an oil tank is provided at the upper end of the support base, and a regulating pump one and a regulating pump two are connected to the upper end of the oil tank. An oil pipe one is provided at the output end of the regulating pump one, and an oil pipe two is provided at the suction end of the regulating pump two. A connecting pipe is connected to one end of the oil pipe one and the oil pipe two, and a flexible hose is provided between the connecting pipe and the arc-shaped pipe. The regulating pump one draws hydraulic oil from inside the oil tank into oil pipe one. Inside the regulating pipe, flexible hose, and arc-shaped pipe, the regulating pump two draws hydraulic oil from inside the oil cylinder through the arc-shaped pipe, flexible hose, connecting pipe, and oil pipe two, and the oil flows back into the oil tank.

[0011] Preferably, a spring is provided between the inner wall of the oil cylinder and the piston, and is sleeved on the outside of the clamping rod. A three-way valve is provided at the connection between the first oil pipe, the second oil pipe, and the connecting pipe. After hydraulic oil is drawn into the oil cylinder, the spring pushes the piston with its own elasticity, causing the piston to return to its original position, which in turn drives the clamping rod and clamping block to return to their original position.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses two sets of mounting sleeves that move relative to and away from each other, which are fitted onto the outside of the MPP power pipes being joined. The clamps inside the mounting sleeves fit against the outer wall of the MPP power pipes, clamping the MPP power pipes. The clamps move synchronously, adapting to clamping MPP power pipes of different radii. The outer section of the welding surface of the two MPP power pipes being joined is clamped and fixed, providing positioning treatment for the MPP power pipes through heat fusion. At the same time, the mounting sleeves are located on the support base and can rotate so that the mounting sleeves rotate downwards, which is suitable for welding MPP power pipes buried in foundation pits. The mounting sleeves can also rotate upwards and move longitudinally, which is suitable for the positioning needs of MPP power pipes installed on the ground and in tunnels. The positioning process of MPP power pipes during directional heat fusion welding is improved. Attached Figure Description

[0014] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a top-view three-dimensional structural diagram of the support base of this utility model;

[0017] Figure 4 This is a three-dimensional cross-sectional view of the mounting sleeve of this utility model;

[0018] Figure 5 This is a three-dimensional cross-sectional view of the oil cylinder of this utility model.

[0019] Reference numerals in the attached diagram: 1. Base; 2. Pulley; 3. Motor 1; 4. Nut; 5. Screw; 6. Bearing bracket; 7. Support seat; 8. Hydraulic rod; 9. Mounting sleeve; 10. Oil tank; 11. Rotating shaft; 12. Slider; 13. Guide rail; 14. Lifting seat; 15. Motor 2; 16. Electromagnetic brake; 17. Regulating pump 1; 18. Regulating pump 2; 19. Oil pipe 1; 20. Oil pipe 2; 21. Connecting pipe; 22. Three-way valve; 23. Arc-shaped pipe; 24. Clamping block; 25. Piston; 26. Clamping rod; 27. Oil cylinder; 28. Hose; 29. ​​Sealing ring; 30. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-5 As shown, this utility model proposes a precision positioning device for directional thermal fusion butt welding of MPP power pipes, including a base 1, a support 7, a hydraulic rod 8, a mounting sleeve 9, an oil tank 10, an oil cylinder 27, and a clamping rod 26. A lifting seat 14 is provided inside the base 1. Nuts 4 and sliders 12 are respectively provided at both ends inside the lifting seat 14. A motor 3 is provided inside one end of the lifting seat 14. A screw 5, threadedly connected to the nut 4, is provided at the output end of the motor 3. A guide rod slidably mounted to the slider 12 is provided on one side of the upper end of the base 1. The rail 13 and the lifting seat 14 are equipped with a motor 15 at one end. The lifting seat 14 is equipped with a support seat 7. Both ends of the support seat 7 are equipped with rotating shafts 11 that are opposite to each other and are connected to the output end of the motor 15 and rotatably installed inside the lifting seat 14. The upper end of the support seat 7 is equipped with two sets of symmetrically distributed hydraulic rods 8. The telescopic ends of the hydraulic rods 8 are equipped with mounting sleeves 9. The inner walls of the mounting sleeves 9 are embedded with sealing rings 29. The sealing rings 29 are slidably installed with clamping rods 26 inside. One end of the pressure rod is equipped with a clamping block 24.

[0022] A bearing bracket 6 is provided on the upper end of the base 1, and the upper end of the screw 5 is rotatably installed inside the bearing bracket 6;

[0023] The base 1 is frame-shaped and has casters 2 at the four corners at the bottom.

[0024] An electromagnetic brake 16 is sleeved on the outside of the output terminal of motor 2 15;

[0025] The mounting sleeve 9 is equipped with oil cylinders 27 arranged in a ring array. One end of the clamping rod 26 is equipped with a piston 25 that is slidably installed inside the oil cylinders 27. An arc-shaped tube 23 with one end penetrating through the mounting sleeve 9 is connected between the oil cylinders 27. A flexible hose 28 is provided at one end of the arc-shaped tube 23.

[0026] An oil tank 10 is provided on the upper end of the support base 7. An regulating pump 17 and a regulating pump 2 18 are connected to the upper end of the oil tank 10. An oil pipe 19 is provided at the output end of the regulating pump 17. An oil pipe 20 is provided at the suction end of the regulating pump 2 18. A connecting pipe 21 is connected to one end of the oil pipe 19 and the oil pipe 20. A flexible hose 28 is provided between the connecting pipe 21 and the arc-shaped pipe 23.

[0027] A spring 30 is provided between the inner wall of the oil cylinder 27 and the piston 25 and is sleeved on the outside of the clamping rod 26. A three-way valve 22 is provided at the connection of the first oil pipe 19, the second oil pipe 20 and the connecting pipe 21.

[0028] Based on the implementation steps of Example 1: The pulley 2 at the bottom of the base 1 moves the device above the foundation pit trench. The first motor 3 drives the screw 5 to rotate, which drives the lifting seat 14 to descend vertically along the guide rail 13 to the pipe docking height. The second motor 15 is started to rotate the support seat 7 180° so that the mounting sleeve 9 is vertically downward. The first regulating pump 17 is started, and the hydraulic oil in the oil tank 10 is pressed into the arc-shaped pipe 23 through the oil pipe 19 and the hose 28. This pushes the piston 25 in each oil cylinder 27 to move outward synchronously, which drives the clamping block 24 at the end of the clamping rod 26 to press against the outer wall of the two MPP pipes to be welded. The external hot melt machine is operated to heat the pipe end along the axial direction of the clamping block 24. After melting and docking, the pressure is maintained and cooled. The hydraulic oil is evenly distributed through the oil cylinders 27 in the ring array to ensure that multiple sets of clamping blocks 24 move radially synchronously and avoid pipe eccentricity. The preload of the spring 30 assists the piston 25 to return to its original position and adapts to the small tolerance of the pipe diameter.

[0029] When erected on the ground or in a tunnel, the lifting seat 14 is raised to the height of the support, the motor 2 15 drives the support seat 7 to return to the center, the mounting sleeve 9 faces upward, the hydraulic rod 8 extends and retracts to adjust the distance between the two mounting sleeves 9, and clamps the pipe in the same step. After the hot melt is completed, the regulating pump 2 18 draws back the hydraulic oil, the spring 30 pushes the piston 25 to reset, and the clamp 24 is released. The screw 5 lifts and moves horizontally in conjunction with the hydraulic rod 8 and rotates in conjunction with the support seat 7 to achieve omnidirectional positioning in space. During welding, the electromagnetic brake 16 locks the output end of the motor 2 15 to prevent angular deviation. Traditional fixed frames cannot take into account both underground and overhead scenarios and need to be repeatedly disassembled and positioned. Manual clamping is difficult to guarantee axial concentricity. Uneven force application of ordinary clamps leads to disordered molecular chain orientation. The oil cylinder 27 and piston 25 are linked to force the clamp 24 to move at equal distances, changing the radial error.

[0030] The clamping block 24 fits snugly against the pipe wall around the entire circumference, suppressing pipe movement during hot melting, ensuring the pressure resistance of the joint, preventing leakage and sealing. During welding, the oil pressure is kept constant and locked. During the cooling stage, the spring 30 automatically retracts to compensate for the shrinkage, absorbing the stress of thermal expansion and contraction and preventing damage to the pipe surface. The rotating support seat 7 allows for convenient switching between pit and ground scenes. The array of oil cylinders 27 ensures uniform distribution of clamping force, fundamentally solving the concentricity and stability issues of directional hot melting of MPP pipes.

[0031] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A kind of MPP electric power tube directional hot melt butt joint precision positioning device, including base (1), support seat (7), hydraulic rod (8), installation sleeve (9), oil tank (10), oil cylinder (27) and clamping rod (26), it is characterized by: The base (1) is equipped with a lifting seat (14) inside. Nuts (4) and sliders (12) are respectively installed at both ends of the lifting seat (14). A motor (3) is installed at one end of the lifting seat (14). A screw (5) is installed at the output end of the motor (3) and threadedly connected to the nut (4). A guide rail (13) is installed on one side of the upper end of the base (1) and slidably mounted on the slider (12). A second motor (15) is installed at one end of the lifting seat (14). The lifting seat (14) is equipped with... There is a support base (7), and both ends of the support base (7) are provided with rotating shafts (11) that are opposite to each other and are connected to the output end of motor 2 (15) and rotatably installed inside the lifting seat (14). The upper end of the support base (7) is provided with two sets of symmetrically distributed hydraulic rods (8). The telescopic ends of the hydraulic rods (8) are provided with mounting sleeves (9). The inner wall of the mounting sleeves (9) is embedded with sealing rings (29). The sealing rings (29) are slidably installed with clamping rods (26) inside. One end of the pressure rod is provided with a clamping block (24).

2. The MPP power pipe directional hot-melt butt joint precision positioning device according to claim 1, characterized in that: The upper end of the base (1) is provided with a bearing bracket (6), and the upper end of the screw (5) is rotatably installed inside the bearing bracket (6).

3. The MPP power pipe directional hot-melt butt joint precision positioning device according to claim 1, characterized in that: The base (1) is frame-shaped and has pulleys (2) at the four corners of the lower end.

4. The MPP power pipe directional hot-melt butt joint precision positioning device according to claim 1, characterized in that: An electromagnetic brake (16) is sleeved on the outside of the output end of the second motor (15).

5. The MPP power pipe directional hot-melt butt joint precision positioning device according to claim 1, characterized in that: The mounting sleeve (9) is provided with oil cylinders (27) arranged in a ring array inside. One end of the clamping rod (26) is provided with a piston (25) that is slidably installed inside the oil cylinder (27). An arc-shaped tube (23) with one end penetrating the mounting sleeve (9) is connected between the oil cylinders (27). A flexible hose (28) is provided at one end of the arc-shaped tube (23).

6. The MPP power tube directional hot-melt butt joint precision positioning device according to claim 5, characterized in that: An oil tank (10) is provided at the upper end of the support base (7). An regulating pump one (17) and a regulating pump two (18) are connected at the upper end of the oil tank (10). An oil pipe one (19) is provided at the output end of the regulating pump one (17). An oil pipe two (20) is provided at the suction end of the regulating pump two (18). A connecting pipe (21) is connected at one end of the oil pipe one (19) and the oil pipe two (20). A flexible hose (28) is provided between the connecting pipe (21) and the arc-shaped pipe (23).

7. The MPP power tube directional hot-melt butt joint precision positioning device according to claim 6, characterized in that: A spring (30) sleeved on the outside of the clamping rod (26) is provided between the inner wall of the oil cylinder (27) and the piston (25). A three-way valve (22) is provided at the connection of the first oil pipe (19), the second oil pipe (20) and the connecting pipe (21).

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