Lining pipe clamping device and pipe penetrating system

By designing the inner lined tube clamping device, the automatic clamping and position adjustment of the inner lined tube is achieved by using the clamper and the drive device, the problem of low manual alignment efficiency in the prior art is solved and the production efficiency is improved.

CN119636105APending Publication Date: 2025-03-18TIANJIN UNIVERSITY OF TECHNOLOGY +1
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Patent Information

Application Number
CN202411929894.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

In the prior art, the inner lined pipe relies on manual operation during the aligning with the steel pipe before it is penetrated into the steel pipe, resulting in large labor consumption and low efficiency, which in turn affects production efficiency.

Method used

A liner tube clamping device is designed, including a clamp, an upper and lower drive device and a cross beam. By setting the upper and lower limit claws and a cross beam, clamping and position adjustment of the liner tube is achieved.

Benefits of technology

The device can automatically clamp and adjust the position of the inner liner tube, significantly save manpower, improve production efficiency, and achieve rapid alignment between the inner liner tube and the steel tube.

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Abstract

The invention discloses a lining pipe clamping device and a pipe penetrating system, and relates to the technical field of lining plastic composite pipe production, the lining pipe clamping device comprises a plurality of clamping devices, each clamping device comprises a holding frame, each holding frame is provided with an upper driving device, an upper cross beam, a lower driving device and a lower cross beam, and a plurality of upper limiting claws are evenly arranged on each upper cross beam side by side; a plurality of lower limiting claws are uniformly arranged on the lower cross beam side by side; the upper cross beam can move up and down, the upper driving device can provide power for up-down movement of the upper cross beam, the lower cross beam is arranged below the upper cross beam and can move up and down, and the lower driving device can provide power for up-down movement of the lower cross beam; the lower cross beam and the upper cross beam are close to each other and can drive the lower limiting claw and the upper limiting claw to clamp the lining pipe, after the lower limiting claw and the upper limiting claw clamp the lining pipe, the lower cross beam and the upper cross beam move upwards and can drive the lining pipe to ascend, and the lower cross beam and the upper cross beam move downwards and can drive the lining pipe to descend; according to the invention, manpower can be effectively saved, and production efficiency is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of plastic-lined composite pipe production, and in particular to an inner liner pipe clamping device and a pipe threading system. Background Art

[0002] Plastic-lined composite pipe is a pipe made by compounding carbon steel pipe and liner pipe with plastic pipe as lining material through thermal expansion process and cold drawing and shrinking process. It has the strength and rigidity of steel pipe and the anti-corrosion performance of plastic pipe, and is increasingly favored by the engineering community. It is now widely used in media transportation and environmental protection treatment systems in chemical, electric power, metallurgy, food and other industries. It is also widely used in drinking water projects and water supply and drainage projects, demonstrating its indispensable and important role in modern infrastructure construction.

[0003] At present, factories mainly use manual transportation to achieve the alignment of the liner pipe with the steel pipe before it is inserted into the steel pipe. This process consumes a lot of manpower and has low manual operation efficiency, resulting in low processing efficiency. It often causes the liner pipes delivered from the previous process to pile up in this process, and it is even necessary to suspend the production of the liner pipes in the previous process to avoid continuing to transport the liner pipes and aggravating the accumulation of the liner pipes, which in turn leads to a significant decrease in production efficiency and is not conducive to large-scale production. Summary of the invention

[0004] The purpose of the present invention is to provide a liner pipe clamping device and a pipe threading system to solve the problems existing in the above-mentioned prior art, which can effectively save manpower and improve production efficiency.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a liner pipe clamping device, comprising a plurality of clamps, the clamps comprising a retaining frame, the retaining frame is provided with an upper driving device, an upper cross beam, a lower driving device and a lower cross beam, the upper cross beam is evenly and side by side provided with a plurality of upper limit claws, the lower cross beam is evenly and side by side provided with a plurality of lower limit claws, the number of the lower limit claws is equal to the number of the upper limit claws, the lower limit claws correspond to the upper limit claws one by one, the lower limit claws are placed below the upper limit claws, the lower limit claws and the upper limit claws can clamp the liner pipe; the upper cross beam can move up and down, the upper driving device is transmission-connected to the upper cross beam, the The upper driving device can provide power for the upper beam to move up and down. The lower beam is placed below the upper beam and can move up and down. The lower driving device is transmission-connected to the lower beam and can provide power for the lower beam to move up and down. The lower beam and the upper beam are close to each other and can drive the lower limit claw and the upper limit claw to clamp the lining tube. After the lower limit claw and the upper limit claw clamp the lining tube, the lower beam and the upper beam both move upward and can drive the lining tube to rise, and the lower beam and the upper beam both move downward and can drive the lining tube to fall.

[0007] Preferably, the top of the first side of the retaining frame is a diagonal structure, and the top end of the upper driving device is fixedly connected to the bottom of the diagonal structure.

[0008] Preferably, the clamp also includes a first sliding bar, two first sliders and two first guide rails, the two first guide rails are fixed side by side on the first side of the retaining frame, one first slider is arranged on one first guide rail, and the other first slider is arranged on the other first guide rail, and the first slider can move up and down along the first guide rail; one end of the first sliding bar is fixedly connected to one of the first sliders, the other end of the first sliding bar is fixedly connected to the other first slider, and the middle part of the first sliding bar is fixedly connected to one end of the upper crossbeam.

[0009] Preferably, the clamp also includes a second slide bar and two second sliders, one of the second sliders is arranged on one of the first guide rails, and the other of the second sliders is arranged on the other of the first guide rails, and the second sliders can move up and down along the first guide rails; one end of the second slide bar is fixedly connected to one of the second sliders, the other end of the second slide bar is fixedly connected to the other of the second sliders, and the middle part of the second slide bar is fixedly connected to the first end of the lower cross beam.

[0010] Preferably, the clamp also includes a third slide bar, two third sliders and two second guide rails, the two second guide rails are fixed side by side on the second side of the retaining frame, one third slider is arranged on one second guide rail, and the other third slider is arranged on the other second guide rail, and the third slider can move up and down along the second guide rail; one end of the third slide bar is fixedly connected to one third slider, the other end of the third slide bar is fixedly connected to the other third slider, and the middle part of the third slide bar is fixedly connected to the second end of the lower cross beam.

[0011] Preferably, the upper driving device is an upper electric cylinder, and the lower driving device is a lower electric cylinder.

[0012] Preferably, the upper limit claw is an inverted "V"-shaped claw, and the lower limit claw is a positive "V"-shaped claw; an upper mounting plate is fixedly provided on the bottom surface of the upper cross beam, and a plurality of inverted "V"-shaped grooves are opened on the bottom surface of the upper mounting plate, and the number of the inverted "V"-shaped grooves is equal to the number of the upper limit claws, and the inverted "V"-shaped grooves correspond one-to-one to the upper limit claws, and the upper limit claw is fixedly installed in the inverted "V"-shaped groove; a lower mounting plate is fixedly provided on the top surface of the lower cross beam, and a plurality of positive "V"-shaped grooves are opened on the top surface of the lower mounting plate, and the number of the positive "V"-shaped grooves is equal to the number of the lower limit claws, and the positive "V"-shaped grooves correspond one-to-one to the lower limit claws, and the lower limit claw is fixedly installed in the positive "V"-shaped grooves.

[0013] Preferably, it also includes a position sensor and a controller, wherein the position sensor is arranged on the retaining frame, the position sensor can detect the position of the liner tube, the controller is communicatively connected with the position sensor, the upper drive device and the lower drive device, and the controller can control the operation of the upper drive device and the lower drive device.

[0014] Preferably, the number of the clamps is four, and the four clamps are arranged side by side in sequence, and an escape space is left between any two adjacent clamps.

[0015] The present invention also provides a pipe threading system, comprising the liner pipe clamping device as described above.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The liner pipe clamping device and pipe threading system provided by the present invention can clamp the liner pipe by cooperating with the lower limit claw and the upper limit claw. By arranging a plurality of upper limit claws side by side on the upper crossbeam and a plurality of lower limit claws side by side on the lower crossbeam, it is possible to clamp a plurality of liner pipes at a time. After the liner pipe is clamped by the lower limit claw and the upper limit claw, the lower crossbeam and the upper crossbeam both move upward to drive the liner pipe to rise, and the lower crossbeam and the upper crossbeam both move downward to drive the liner pipe to fall, thereby adjusting the upper and lower positions of the clamped liner pipes, so as to facilitate the rapid alignment of the liner pipe with the steel pipe before the liner pipe is inserted into the steel pipe. By arranging an upper drive device to provide power for the upper and lower movements of the upper crossbeam and a lower drive device to provide power for the lower and upper movements of the lower crossbeam, the position of the liner pipe can be mechanized, thereby effectively saving manpower and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the inner liner pipe clamping device provided by the present invention;

[0020] Figure 2 for Figure 1 A front view of the inner liner pipe clamping device;

[0021] In the figure: 1-clamp, 2-upper drive device, 3-upper beam, 4-lower drive device, 5-lower beam, 6-upper limit claw, 7-lower limit claw, 8-inner liner, 9-cambered structure, 10-first slide bar, 11-first slider, 12-first guide rail, 13-second slide bar, 14-second slider, 15-third slide bar, 16-third slider, 17-second guide rail, 18-upper mounting plate, 19-lower mounting plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The purpose of the present invention is to provide a liner pipe clamping device and a pipe threading system to solve the problems existing in the above-mentioned prior art, which can effectively save manpower and improve production efficiency.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Embodiment 1

[0026] like Figure 1-Figure 2 As shown, the present embodiment provides a liner pipe clamping device, including a plurality of clamps 1, the clamps 1 include a retaining frame, on which an upper driving device 2, an upper beam 3, a lower driving device 4 and a lower beam 5 are arranged, the upper beam 3 is evenly and side by side with a plurality of upper limit claws 6, the lower beam 5 is evenly and side by side with a plurality of lower limit claws 7, the number of the lower limit claws 7 is equal to that of the upper limit claws 6, the lower limit claws 7 correspond to the upper limit claws 6 one by one, the lower limit claws 7 are placed below the upper limit claws 6, the lower limit claws 7 and the upper limit claws 6 can clamp the liner pipe 8; the upper beam 3 can move up and down, the upper driving device 2 and ... The beam 3 is transmission connected, the upper drive device 2 can provide power for the upper beam 3 to move up and down, the lower beam 5 is placed below the upper beam 3, the lower beam 5 can move up and down, the lower drive device 4 is transmission connected to the lower beam 5, the lower drive device 4 can provide power for the lower beam 5 to move up and down; the lower beam 5 and the upper beam 3 are close to each other to drive the lower limit claw 7 and the upper limit claw 6 to clamp the lining tube 8, after the lower limit claw 7 and the upper limit claw 6 clamp the lining tube 8, the lower beam 5 and the upper beam 3 both move upward to drive the lining tube 8 to rise, and the lower beam 5 and the upper beam 3 both move downward to drive the lining tube 8 to fall.

[0027] The inner liner pipe clamping device provided in the present embodiment can clamp the inner liner pipe 8 by setting the lower limit claw 7 to cooperate with the upper limit claw 6, and can clamp several inner liner pipes 8 at a time by setting a plurality of upper limit claws 6 side by side on the upper cross beam 3 and a plurality of lower limit claws 7 side by side on the lower cross beam 5. After the inner liner pipe 8 is clamped by the lower limit claw 7 and the upper limit claw 6, the lower cross beam 5 and the upper cross beam 3 both move upward to drive the inner liner pipe 8 to rise, and the lower cross beam 5 and the upper cross beam 3 both move downward to drive the inner liner pipe 8 to fall, so as to adjust the upper and lower positions of the clamped several inner liner pipes 8, so as to realize the rapid alignment of the inner liner pipe 8 with the steel pipe before it is inserted into the steel pipe. By setting the upper drive device 2 to provide power for the upper cross beam 3 to move up and down, and setting the lower drive device 4 to provide power for the lower cross beam 5 to move up and down, the position of the inner liner pipe 8 can be mechanized, thereby effectively saving manpower and improving production efficiency.

[0028] As a more preferred implementation scheme of this embodiment, the top of the first side of the retaining frame is a cable-stayed structure 9, and the top of the upper driving device 2 is fixedly connected to the bottom of the cable-stayed structure 9. The cable-stayed structure 9 can provide stable support for the upper driving device 2 and can improve the overall structural strength.

[0029] As a more preferred implementation of this embodiment, the clamp 1 also includes a first slide bar 10, two first sliders 11 and two first guide rails 12. The two first guide rails 12 are fixed side by side on the first side of the retaining frame, one first slider 11 is arranged on one first guide rail 12, and the other first slider 11 is arranged on the other first guide rail 12. The first slider 11 can move up and down along the first guide rail 12; one end of the first slide bar 10 is fixedly connected to one first slider 11, and the other end of the first slide bar 10 is fixedly connected to the other first slider 11. The middle part of the first slide bar 10 is fixedly connected to one end of the upper beam 3, so as to guide the movement of the upper beam 3 and improve the stability of the movement of the upper beam 3.

[0030] As a more preferred implementation of this embodiment, the clamp 1 also includes a second slide bar 13 and two second sliders 14, one second slider 14 is arranged on a first guide rail 12, and the other second slider 14 is arranged on another first guide rail 12, and the second slider 14 can move up and down along the first guide rail 12; one end of the second slide bar 13 is fixedly connected to a second slider 14, and the other end of the second slide bar 13 is fixedly connected to the other second slider 14, and the middle part of the second slide bar 13 is fixedly connected to the first end of the lower beam 5, so as to guide the movement of the lower beam 5 and improve the stability of the movement of the lower beam 5.

[0031] As a more preferred implementation of this embodiment, the clamp 1 also includes a third slide bar 15, two third sliders 16 and two second guide rails 17. The two second guide rails 17 are fixed side by side on the second side of the retaining frame. One third slider 16 is arranged on one second guide rail 17, and the other third slider 16 is arranged on the other second guide rail 17. The third slider 16 can move up and down along the second guide rail 17; one end of the third slide bar 15 is fixedly connected to a third slider 16, and the other end of the third slide bar 15 is fixedly connected to the other third slider 16. The middle part of the third slide bar 15 is fixedly connected to the second end of the lower beam 5, which can further improve the stability of the movement of the lower beam 5.

[0032] As a more preferred implementation manner of this embodiment, the upper driving device 2 is an upper electric cylinder, and the lower driving device 4 is a lower electric cylinder, which has smooth movement and is convenient for precise control; specifically, the upper electric cylinder is placed inverted, and the bottom is connected to the upper beam 3 through a "Y"-shaped joint, and the top of the lower electric cylinder is connected to the lower beam 5 through a "Y"-shaped joint.

[0033] As a more preferred implementation of this embodiment, the upper limit claw 6 is an inverted "V"-shaped claw, and the lower limit claw 7 is a positive "V"-shaped claw; an upper mounting plate 18 is fixedly provided on the bottom surface of the upper crossbeam 3, and a plurality of inverted "V"-shaped grooves are provided on the bottom surface of the upper mounting plate 18, and the number of inverted "V"-shaped grooves is equal to the number of the upper limit claws 6, and the inverted "V"-shaped grooves correspond to the upper limit claws 6 one by one, and the upper limit claws 6 are fixedly installed in the inverted "V"-shaped grooves; a lower mounting plate 19 is fixedly provided on the top surface of the lower crossbeam 5, and the lower mounting plate 1 A plurality of positive "V"-shaped grooves are provided on the top surface of 9, and the number of the positive "V"-shaped grooves is equal to the number of the lower limit claws 7. The positive "V"-shaped grooves correspond to the lower limit claws 7 one by one, and the lower limit claws 7 are fixedly installed in the positive "V"-shaped grooves. The structure is simple and can achieve stable clamping of the inner liner pipe 8. As a more preferred implementation method of this embodiment, the upper limit claw 6 is fixedly installed in the inverted "V"-shaped groove by screws, and the lower limit claw 7 is fixedly installed in the positive "V"-shaped groove by screws, which is easy to manufacture and use.

[0034] As a more preferred implementation of this embodiment, the liner pipe clamping device provided in this embodiment also includes a position sensor and a controller. The position sensor is arranged on the retaining frame. The position sensor can detect the position of the liner pipe 8. The controller is connected to the position sensor, the upper drive device 2 and the lower drive device 4 for communication. The controller can control the upper drive device 2 and the lower drive device 4 to work. After the position sensor detects that the liner pipe 8 has moved into place, the controller controls the upper drive device 2 and the lower drive device 4 to work so that the lower beam 5 and the upper beam 3 are close to each other. Until the lower limit claw 7 and the upper limit claw 6 clamp the inner lining tube 8. After the lower limit claw 7 and the upper limit claw 6 clamp the inner lining tube 8, the controller continues to control the upper drive device 2 and the lower drive device 4 to work, so that the lower beam 5 and the upper beam 3 both move upward to drive the inner lining tube 8 to rise, or the lower beam 5 and the upper beam 3 both move downward to drive the inner lining tube 8 to drop. The inner lining tube 8 is grasped and the position of the inner lining tube 8 is adjusted through automatic control, and guidance is provided for the pipe threading process of the next step. No human intervention is required, which facilitates the realization of automated production and significantly improves production efficiency.

[0035] As a more preferred implementation manner of this embodiment, the number of clamps 1 is four, and the four clamps 1 are arranged side by side in sequence to clamp different positions of the liner pipe 8 respectively. An escape space is left between any two adjacent clamps 1 to facilitate the horizontal conveyor belt or the jacking transplanter to transport the liner pipe 8 to the liner pipe clamping device provided in this embodiment.

[0036] Embodiment 2

[0037] This embodiment provides a pipe threading system, including the inner liner pipe clamping device in the first embodiment.

[0038] The pipe threading system provided in the present embodiment can clamp the inner lining pipe 8 by setting the lower limit claw 7 to cooperate with the upper limit claw 6, and can clamp several inner lining pipes 8 at a time by setting a plurality of upper limit claws 6 side by side on the upper cross beam 3 and a plurality of lower limit claws 7 side by side on the lower cross beam 5. After the inner lining pipe 8 is clamped by the lower limit claw 7 and the upper limit claw 6, the lower cross beam 5 and the upper cross beam 3 both move upward to drive the inner lining pipe 8 to rise, and the lower cross beam 5 and the upper cross beam 3 both move downward to drive the inner lining pipe 8 to fall, thereby adjusting the upper and lower positions of the clamped inner lining pipes 8, so as to facilitate the rapid alignment of the inner lining pipe 8 with the steel pipe before it is inserted into the steel pipe. By setting the upper drive device 2 to provide power for the upper cross beam 3 to move up and down, and setting the lower drive device 4 to provide power for the lower cross beam 5 to move up and down, the position of the inner lining pipe 8 can be mechanized, thereby effectively saving manpower and improving production efficiency.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A liner pipe clamping device, characterized in that: The invention comprises a plurality of clamps, wherein the clamp comprises a retaining frame, and an upper driving device, an upper beam, a lower driving device and a lower beam are arranged on the retaining frame. A plurality of upper limit claws are evenly arranged side by side on the upper beam, and a plurality of lower limit claws are evenly arranged side by side on the lower beam. The number of the lower limit claws is equal to that of the upper limit claws, and the lower limit claws correspond to the upper limit claws one by one. The lower limit claws are placed below the upper limit claws, and the lower limit claws and the upper limit claws can clamp the liner pipe; the upper beam can move up and down, and the upper driving device is transmission-connected to the upper beam, and the upper driving device can be The upper crossbeam provides power for moving up and down, the lower crossbeam is placed below the upper crossbeam, the lower crossbeam can move up and down, the lower driving device is transmission connected to the lower crossbeam, and the lower driving device can provide power for the lower crossbeam to move up and down; the lower crossbeam and the upper crossbeam are close to each other and can drive the lower limit claw and the upper limit claw to clamp the inner lining tube. After the lower limit claw and the upper limit claw clamp the inner lining tube, the lower crossbeam and the upper crossbeam both move upward to drive the inner lining tube to rise, and the lower crossbeam and the upper crossbeam both move downward to drive the inner lining tube to fall.

2. The liner pipe clamping device according to claim 1 is characterized in that: The top of the first side of the retaining frame is an oblique-stayed structure, and the top end of the upper driving device is fixedly connected to the bottom of the oblique-stayed structure.

3. The liner pipe clamping device according to claim 1 is characterized in that: The clamp also includes a first slide bar, two first sliders and two first guide rails, the two first guide rails are fixed side by side on the first side of the retaining frame, one first slider is arranged on one first guide rail, and the other first slider is arranged on the other first guide rail, and the first slider can move up and down along the first guide rail; one end of the first slide bar is fixedly connected to one of the first sliders, the other end of the first slide bar is fixedly connected to the other first slider, and the middle part of the first slide bar is fixedly connected to one end of the upper crossbeam.

4. The liner pipe clamping device according to claim 3 is characterized in that: The clamp also includes a second sliding rod and two second sliders, one of the second sliders is arranged on one of the first guide rails, and the other of the second sliders is arranged on the other of the first guide rails, and the second sliders can move up and down along the first guide rails; one end of the second sliding rod is fixedly connected to one of the second sliders, and the other end of the second sliding rod is fixedly connected to the other of the second sliders, and the middle part of the second sliding rod is fixedly connected to the first end of the lower cross beam.

5. The liner pipe clamping device according to claim 4 is characterized in that: The clamp also includes a third slide bar, two third sliders and two second guide rails, the two second guide rails are fixed side by side on the second side of the retaining frame, one third slider is arranged on one second guide rail, and the other third slider is arranged on the other second guide rail, and the third slider can move up and down along the second guide rail; one end of the third slide bar is fixedly connected to one third slider, the other end of the third slide bar is fixedly connected to the other third slider, and the middle part of the third slide bar is fixedly connected to the second end of the lower cross beam.

6. The liner pipe clamping device according to claim 1, characterized in that: The upper driving device is an upper electric cylinder, and the lower driving device is a lower electric cylinder.

7. The liner pipe clamping device according to claim 1, characterized in that: The upper limit claw is an inverted "V"-shaped claw, and the lower limit claw is a positive "V"-shaped claw; an upper mounting plate is fixedly provided on the bottom surface of the upper crossbeam, and a plurality of inverted "V"-shaped grooves are provided on the bottom surface of the upper mounting plate, and the number of the inverted "V"-shaped grooves is equal to the number of the upper limit claws, and the inverted "V"-shaped grooves correspond one-to-one to the upper limit claws, and the upper limit claw is fixedly installed in the inverted "V"-shaped groove; a lower mounting plate is fixedly provided on the top surface of the lower crossbeam, and a plurality of positive "V"-shaped grooves are provided on the top surface of the lower mounting plate, and the number of the positive "V"-shaped grooves is equal to the number of the lower limit claws, and the positive "V"-shaped grooves correspond one-to-one to the lower limit claws, and the lower limit claw is fixedly installed in the positive "V"-shaped grooves.

8. The liner pipe clamping device according to claim 1, characterized in that: It also includes a position sensor and a controller. The position sensor is arranged on the retaining frame. The position sensor can detect the position of the liner tube. The controller is communicatively connected with the position sensor, the upper drive device and the lower drive device. The controller can control the operation of the upper drive device and the lower drive device.

9. The liner pipe clamping device according to claim 1, characterized in that: The number of the clamps is four, and the four clamps are arranged side by side in sequence, and an escape space is left between any two adjacent clamps.

10. A pipe threading system, characterized in that: It comprises a liner pipe clamping device as described in any one of claims 1 to 9.