Tube drawing bench
By designing a pipe puller with lifting cylinder and hydraulic nitrogen hammer, the pull-up and up-down vibration of the sleeve reduces friction, the problem of difficulty in pulling out the deep sleeve is solved, and a safe and efficient pipe pulling operation is achieved.
Patent Information
- Application Number
- CN202510553573.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the process of pulling out sleeves with larger depths, the sleeve is easily stuck. Traditional pipe extruders cannot effectively reduce friction when the depth is larger, and vibration may cause the sleeve to tilt, affecting the pulling effect and increasing economic costs and safety hazards.
A pipe puller is designed. By setting up a lifting cylinder and a hydraulic nitrogen hammer on the deck, the lifting cylinder is used to tighten the casing and hit the decking base at intervals through the hydraulic nitrogen hammer, the pulling up and up and down vibration of the casing is realized, reducing the friction between the pipe wall and the soil layer or rock.
It effectively reduces the power required for casing extraction, reduces the risk of equipment damage, ensures safe production, and improves the efficiency and verticality of casing extraction.
Smart Images
Figure CN120367534A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of exploration equipment, and particularly relates to a pipe extractor. Background Art
[0002] Humans are drilling deeper and deeper in oil and gas, resource exploration, and infrastructure construction. The depth of casing following is getting larger and larger, and the difficulty of casing extraction and recycling is also getting higher and higher. In case of frozen soil, fine silt, or soil layers with negative skin friction, the difficulty coefficient of casing extraction increases geometrically. When using a traditional pipe extractor to extract the casing, the casing may be stuck. It is pulled out by increasing the pulling force, but this forced way of pulling out the casing will damage the casing. In order to make it easier to pull out the casing, a vibration device is set later. By vibrating the casing, the soil layer in contact with the casing is loosened, so as to reduce the pulling force and make it easier to pull out the casing. However, the method of knocking or vibrating the casing has disadvantages: First, when the casing depth is large, the shaking or vibration at the top gradually weakens with the depth. For casings deeper than 300m, it is basically impossible to follow the shaking or vibration, and it has no effect on reducing the pulling force for extracting the lower pipes. Second, the vibration of the casing will affect the verticality of the casing, causing inclination and affecting the extraction. In production, it often occurs that the casing cannot be extracted, and it has to be left in the original hole position, wasting economic costs and bringing huge hidden dangers to the later pile foundation construction. Summary of the Invention
[0003] The present invention aims to solve the problem of difficult casing extraction when the casing depth is large, and thus provides a pipe extractor, which reduces the friction between the pipe wall and the surrounding soil layer through vibration, reduces the resistance of pipe extraction, and makes it easier to extract the casing.
[0004] To achieve the above invention purpose, the present invention provides a pipe extractor for extracting the casing, including a clamping seat, lifting cylinder A, lifting cylinder B, lifting cylinder C, lifting cylinder D, a padding, hydraulic nitrogen hammers A, hydraulic nitrogen hammers B, and a positioning device;
[0005] An installation hole for sleeving the casing is provided in the middle of the clamping seat. The positioning device for limiting the upper position of the clamping seat is fixedly connected to the casing, and the clamping seat is arranged below the positioning device;
[0006] Lifting cylinder A, lifting cylinder B, lifting cylinder C, and lifting cylinder D are symmetrically arranged in four directions on the clamping seat. The lower ends of lifting cylinder A, lifting cylinder B, lifting cylinder C, and lifting cylinder D are connected to the padding at the construction site; two hydraulic nitrogen hammers A and hydraulic nitrogen hammers B are symmetrically arranged below the clamping seat; during operation, lifting cylinder D of the clamping seat, lifting cylinder A, lifting cylinder B, lifting cylinder C, and lifting cylinder D lift the casing upward to make the casing in a tension state, and hydraulic nitrogen hammers A and hydraulic nitrogen hammers B hammer the lower surface of the clamping seat at a set time interval, so that the casing is in a state of being pulled upward and vibrating up and down at the same time.
[0007] Further, the lower ends of the lifting cylinders A, B, C, and D are non-rigidly connected to the padding through hinges A, B, C, and D.
[0008] Further, the positioning device includes slips A, B, a clamping cylinder A, and a clamping cylinder B. Slips A and B for clamping the casing are arranged in the middle mounting hole of the clamping seat. The clamping cylinder A is arranged outside the slip A, and the clamping cylinder B is arranged outside the slip B. During operation, the clamping cylinder A and the clamping cylinder B respectively clamp the slips A and B.
[0009] Further, the positioning device is a nut or a positioning plate fixedly installed on the outside of the casing, and the lower clamping seat is lifted to a position close to the nut or the positioning plate.
[0010] Further, it further includes a spirit level C, a spirit level D, a spirit level A, and a spirit level B. A spirit level C in the front-rear direction and a spirit level D in the left-right direction are arranged on the upper surface of the clamping seat. A spirit level A is arranged in front of the clamping seat, and a spirit level B is arranged on the left side surface of the clamping seat.
[0011] The present invention uses a hydraulic nitrogen hammer to generate vibration, reducing the friction between the pipe wall and the soil layer or rock
[0012] so that the casing is in a state of being simultaneously pulled upward and vibrated up and down. After multiple vibrations, looseness occurs between the pipe wall of the casing and the surrounding soil layer or rock, reducing the friction between the pipe wall and the soil layer or rock, reducing the power required for pipe extraction, and at the same time reducing the probability of equipment damage, achieving the purpose of safe production. Description of the Drawings
[0013] Figure 1 is the front view of the present invention;
[0014] Figure 2 is the top view of the present invention;
[0015] Figure 3 is the left view of the present invention;
[0016] Figure 4 is the sectional view taken along line B-B of the present invention.
[0017] In the figure: 1. Hinge A; 2. Chuck; 3. Lifting oil cylinder A; 4. Arm A; 5. Compressing oil cylinder A; 6. Compressing oil cylinder B; 7. Arm B; 8. Lifting oil cylinder B; 9. Hydraulic nitrogen hammer A; 10. Hinge B; 11. Cushion; 12. Hinge C; 13. Bubble level A; 14. Hydraulic nitrogen hammer B; 15. Bubble level C; 16. Bubble level D; 17. Lifting oil cylinder C; 18. Lifting oil cylinder D; 19. Bubble level B; 20. Jaw A; 21. Jaw B; 22. Hinge D; 23. Sleeve. Detailed implementation mode
[0018] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a pipe extractor of the present invention with reference to the attached drawings. The "up", "down", "left" and "right" in the description are based on the attached drawings.
[0019] Example 1: Refer to Figures 1 to 4 ; The pipe extractor includes a chuck 2, a jaw A 20, a jaw B 21, a compressing oil cylinder A 5, a compressing oil cylinder B 6, a lifting oil cylinder A 3, a lifting oil cylinder B 8, a lifting oil cylinder C 17, a lifting oil cylinder D 18, and a cushion 11.
[0020] A jaw A 20 and a jaw B 21 are arranged in the installation hole in the middle of the chuck 2 for sleeving the sleeve; the sleeve 23 is inserted between the jaw A 20 and the jaw B 21. The compressing oil cylinder A 5 is arranged outside the jaw A 20 and fixed on the chuck 2 through the arm A 4; the compressing oil cylinder B 6 is arranged outside the jaw B 21 and fixed on the chuck 2 through the arm B 7. The compressing oil cylinder A 5 and the compressing oil cylinder B 6 respectively compress the jaw A 20 and the jaw B 21; the jaw A 20 and the jaw B 21 hold the sleeve 23 tightly; the lifting oil cylinder A 3, the lifting oil cylinder B 8, the lifting oil cylinder C 17 and the lifting oil cylinder D 18 are symmetrically arranged in four directions on the chuck 2; the lower ends of the lifting oil cylinder A 3, the lifting oil cylinder B 8, the lifting oil cylinder C 17 and the lifting oil cylinder D 18 are connected to the cushion 11 at the construction site, and the cushion 11 is generally a platform cushion plate. Two hydraulic nitrogen hammers A 9 and hydraulic nitrogen hammers B 14 are symmetrically arranged on the lower side of the chuck 2. During operation; the lifting oil cylinder D 18; the lifting oil cylinder A 3, the lifting oil cylinder B 8, the lifting oil cylinder C 17 and the lifting oil cylinder D 18 lift the sleeve upward to make the sleeve in a tension state; the hydraulic nitrogen hammers A 9 and the hydraulic nitrogen hammers B 14 hammer the lower surface of the chuck 2 at the set time interval; so that the sleeve is in a state of being pulled upward and vibrating up and down at the same time; after multiple vibrations, looseness is generated between the tube wall of the sleeve and the surrounding soil layer or rock; reduce the friction between the tube wall and the soil layer or rock; reduce the power required for pipe extraction; at the same time, reduce the probability of damaging the equipment; achieve the purpose of safe production. The set time interval of the hydraulic nitrogen hammers A 9 and the hydraulic nitrogen hammers B 14 is set according to the depth of the sleeve and the difficulty of pulling; when the depth of the sleeve increases and the difficulty of pulling increases, increase the power of the hydraulic nitrogen hammer and increase the time interval.
[0021] The lower ends of the lifting cylinders A3, B8, C17 and D18 are non-rigidly connected to the padding 11 through hinges A1, B10, C12 and D22; they play a buffering role during vibration; enhance the vibration effect; and reduce the power required for pipe extraction.
[0022] On the upper surface of the chuck 2, a bubble level C15 in the front-rear direction and a bubble level D16 in the left-right direction are provided; a bubble level A13 is provided in front of the chuck 2; and a bubble level B19 is provided on the left side surface of the chuck 2. During construction, the vertical and horizontal conditions of the equipment can be observed through these levels; and adjustments can be made at any time to reduce the power required for pipe extraction; also keep the equipment in a safe operating state and reduce accidents.
[0023] Embodiment 2; except for the position of the slip, it is the same as Embodiment 1. The slip is cancelled. The mounting hole in the middle of the chuck 2 for sleeving the casing has a diameter larger than that of the casing for convenient installation. The outer side of the casing is provided with threads. A nut with a diameter larger than the hole in the middle of the chuck 2, or a positioning plate that is in threaded engagement with the outer threads of the casing in the middle. The lower chuck 2 is lifted to a position close to the nut or the positioning plate. When the chuck 2 is hammered, it can prevent the chuck 2 from moving upward, causing the vibration generated by the impact force on the chuck 2 to be transmitted to the lower part of the casing, loosening between the casing wall and the surrounding soil layer or rock, reducing the friction between the casing wall and the soil layer or rock, and reducing the power required for pipe extraction.
[0024] The slip in Embodiment 1 and the nut or positioning plate in Embodiment 2 are both for fixing the relative positions of the chuck and the casing, and are collectively referred to as the positioning device.
[0025] The embodiments of the present invention disclosed above are only used to help illustrate the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. It should not be limited that the invention is only in the specific embodiments.
Claims
1. A pipe extractor for extracting a casing pipe (23), which is fixed on a cushioning material (11) at a construction site, and is characterized in that: It includes a clamping seat (2), a lifting oil cylinder A (3), a lifting oil cylinder B (8), a lifting oil cylinder C (17), a lifting oil cylinder D (18), a cushioning object (11), a hydraulic nitrogen hammer A (9), a hydraulic nitrogen hammer B (14), and a positioning device; An installation hole for sleeving a casing is provided in the middle of the clamping seat (2). The positioning device for defining the upper position of the clamping seat is fixedly connected to the casing, and the clamping seat (2) is arranged below the positioning device; The lifting oil cylinder A (3), the lifting oil cylinder B (8), the lifting oil cylinder C (17), and the lifting oil cylinder D (18) are symmetrically arranged in four directions on the clamping seat (2). The lower ends of the lifting oil cylinder A (3), the lifting oil cylinder B (8), the lifting oil cylinder C (17), and the lifting oil cylinder D (18) are connected to the cushioning object (11) at the construction site; Two hydraulic nitrogen hammers A (9) and hydraulic nitrogen hammers B (14) are symmetrically arranged below the clamping seat (2); During operation, the lifting oil cylinder D (18) of the clamping seat (2), the lifting oil cylinder A (3), the lifting oil cylinder B (8), the lifting oil cylinder C (17), and the lifting oil cylinder D (18) lift the casing upward to make the casing in a tensioned state, and the hydraulic nitrogen hammers A (9) and hydraulic nitrogen hammers B (14) hammer the lower surface of the clamping seat (2) at the set time interval, so that the casing is in a state of being pulled upward and vibrated up and down simultaneously.
2. The tube extractor according to claim 1, wherein: The lower ends of the lifting oil cylinder A (3), the lifting oil cylinder B (8), the lifting oil cylinder C (17), and the lifting oil cylinder D (18) are non-rigidly connected to the cushioning object (11) through hinge A (1), hinge B (10), hinge C (12), and hinge D (22).
3. The tube extractor according to claim 1, characterized in that: The positioning device includes a slip jaw A (20), a slip jaw B (21), a pressing oil cylinder A (5), and a pressing oil cylinder B (6). The slip jaw A (20) and the slip jaw B (21) for clamping the casing (23) are arranged in the installation hole in the middle of the clamping seat (2). The pressing oil cylinder A (5) is arranged outside the slip jaw A (20), and the pressing oil cylinder B (6) is arranged outside the slip jaw B (21). During operation, the pressing oil cylinder A (5) and the pressing oil cylinder B (6) press the slip jaw A (20) and the slip jaw B (21) respectively.
4. A tube pulling machine according to claim 1, characterized in that: The positioning device is a nut or a positioning plate fixedly installed on the outside of the casing (23), and the lower clamping seat (2) is lifted to a position close to the nut or the positioning plate.
5. A tube pulling machine according to any one of claims 1 to 4, characterized in that: It also includes a spirit level C (15), a spirit level D (16), a spirit level A (13), and a spirit level B (19). The spirit level C (15) in the front-back direction and the spirit level D (16) in the left-right direction are arranged on the upper surface of the clamping seat (2). The spirit level A (13) is arranged in front of the clamping seat (2), and the spirit level B (19) is arranged on the left side surface of the clamping seat (2).