Self-locking elevator
Through the design of self-locking lifting card, the drive cylinder drives movement inside the self-locking seat to increase the contact area and strength between the detent and the oil suction rod, solving the problem of oil suction rod drop caused by the reduction of the friction force of the lifting card, and achieving the safety and stability of the oil suction rod hoisting.
Patent Information
- Application Number
- CN202422613744.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-29
AI Technical Summary
As the clamping assembly of the lifting card increases, the friction force decreases, resulting in an increase in the risk of falling when the suction rod is lifted.
A self-locking hanging card is designed, adopting a first self-locking assembly and a second self-locking assembly. By driving the cylinder to drive the movement of the self-locking seat, the contact area and strength of the deck and the oil suction rod are increased, and a replaceable deck is equipped to maintain the clamping force.
Improves the safety of suction rod hoisting, prevents falling, and ensures the long-term stability of the equipment through a replaceable deck.
Smart Images
Figure CN223136076U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oilfield exploitation equipment, in particular to a self-locking elevator Background Technique
[0002] The sucker rod elevator is an important tool for lifting and fixing sucker rods in oilfield exploitation operations; its working principle is mainly based on the principles of mechanical clamping and load bearing; when it is necessary to lift the sucker rod, the operator aligns the opening of the elevator with the sucker rod and sleeves it on the sucker rod; then, by operating the clamping mechanism of the elevator, the slips or jaws inside the elevator tightly hold the sucker rod; these slips or jaws are usually specially designed and manufactured to provide sufficient friction and clamping force to ensure that the sucker rod does not slip during the lifting process;
[0003] After clamping the sucker rod, the hook of a crane or other lifting equipment is connected to the lifting ring on the elevator, so as to lift the sucker rod and perform corresponding operation; when the elevator clamps the sucker rod, with the increase of the use frequency of the clamping component on the elevator, its surface becomes smooth after being subjected to frequent friction, resulting in a decrease in friction and an increase in the risk of falling after lifting the sucker rod. Content of the Utility Model
[0004] The purpose of the utility model is to provide a self-locking elevator to solve the defect that with the increase of the use frequency of the clamping component ring on the elevator mentioned in the above background technique, its surface becomes smooth when subjected to frequent friction, resulting in a decrease in friction and an increase in the risk of falling after lifting the sucker rod.
[0005] To achieve the above purpose, a self-locking elevator is provided, which includes an elevator body. A base is fixedly installed at the bottom of the elevator body, and a through hole is opened in the middle of the elevator body. At the same time, the diameter of the through hole is larger than the diameter of the oil well sucker rod. A first self-locking component is installed on one side inside the elevator body, and a second self-locking component is installed on the other side inside the elevator body. The elevator body clamps and fixes the sucker rod inserted therein through the second self-locking component and the first self-locking component inside; the second self-locking component includes a driving cylinder fixedly installed on the base, and the piston rod at the top of the driving cylinder is fixedly arranged at the bottom of the driving seat. At the same time, a self-locking seat is movably installed on the surface of the driving seat, and a clamping seat covers the surface of the self-locking seat.
[0006] Preferably, the cross-section of the elevator body and the base is arranged in a "T" shape, and the second self-locking component and the first self-locking component inside the elevator body have the same structure, and the driving cylinders on the second self-locking component and the first self-locking component run synchronously.
[0007] Preferably, guide seats are fixedly installed at both ends of the self-locking seat, two groups of guide holes are opened on the guide seats, and guide rods are inserted into the two groups of guide holes.
[0008] Preferably, the end of the guide rod is fixedly arranged on the inner wall surface of the elevator body, springs are installed on both groups of guide rods, and the two groups of guide rods are arranged in parallel.
[0009] Preferably, the self-locking seat, the assembly groove and the driving seat are all right-angled trapezoidal structures made of metal materials. An inclined stress surface is provided at the bottom of the self-locking seat, and an inclined driving surface is provided on the surface of the driving seat. The slopes of the stress surface and the driving surface are the same.
[0010] Preferably, the card seat is an arc-shaped structure made of rubber material. Two assembly bars are fixedly arranged on the back of the card seat. An assembly groove is provided on the surface of the self-locking seat. The size of the assembly groove is adapted to that of the assembly bar. The assembly bar is inserted into the interior of the assembly groove. The cross-sections of the assembly groove and the assembly bar are both circular. The self-locking seat and the card seat are positioned and installed through the assembly groove and the assembly bar.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. In the utility model, the driving seat drives the stress surface at the bottom of the self-locking seat through the driving surface thereon, so that the self-locking seat moves inward under stress. By reducing the distance between the two card seats, the clamping and fixing work of the sucker rod is completed. The card seat is arc-shaped, and its radian is adapted to the radian of the outer surface of the sucker rod, so that the card seat is attached to the outside of the sucker rod and is extruded, which can increase the contact area and strength between the card seat and the sucker rod, ensure the clamping force on the sucker rod, prevent it from falling, and improve the safety when hoisting the sucker rod.
[0013] 2. In the utility model, as the use time and frequency of the card seat increase, the card seat will become thinner and thinner. To avoid reducing the clamping strength on the sucker rod, the severely worn card seat can be replaced in time. Hold the card seat and pull the assembly bar out of the interior of the assembly groove. By replacing the card seat in time, the safety of the equipment during use is ensured. Description of the Drawings
[0014] Figure 1 is a front view of the structure of the utility model;
[0015] Figure 2 is a bottom view of the structure of the utility model;
[0016] Figure 3 is a top view of the structure of the utility model;
[0017] Figure 4 is a rear view of the structure of the utility model.
[0018] Reference Numerals in the Drawings: 1, elevator body; 2, base; 3, through hole; 4, first self-locking assembly; 5, second self-locking assembly; 51, self-locking seat; 52, assembly groove; 53, assembly strip; 54, clamping seat; 55, guide seat; 56, guide rod; 57, spring; 58, driving seat; 59, driving cylinder. Detailed Implementation Manner
[0019] Please refer to Figures 1-4 , the present utility model provides a self-locking elevator, which includes an elevator body 1. A base 2 is fixedly installed at the bottom of the elevator body 1. A through hole 3 is formed in the middle of the elevator body 1. The diameter of the through hole 3 is larger than the diameter of the oil well pumping rod. A first self-locking assembly 4 is installed on one side inside the elevator body 1, and a second self-locking assembly 5 is installed on the other side inside the elevator body 1. The elevator body 1 clamps and fixes the pumping rod inserted therein through the second self-locking assembly 5 and the first self-locking assembly 4 inside. The second self-locking assembly 5 includes a driving cylinder 59 fixedly installed on the base 2. The piston rod at the top of the driving cylinder 59 is fixedly arranged at the bottom of the driving seat 58. A self-locking seat 51 is movably installed on the surface of the driving seat 58, and a clamping seat 54 covers the surface of the self-locking seat 51.
[0020] As a preferred implementation manner, the cross-sections of the elevator body 1 and the base 2 are arranged in a "T" shape. The second self-locking assembly 5 and the first self-locking assembly 4 inside the elevator body 1 have the same structure, and the driving cylinders 59 on the second self-locking assembly 5 and the first self-locking assembly 4 operate synchronously.
[0021] As a preferred implementation manner, guide seats 55 are fixedly installed at both ends of the self-locking seat 51. Two groups of guide holes are formed in the guide seats 55, and guide rods 56 are inserted into the two groups of guide holes.
[0022] As can be seen from the above, during use, when the operator is operating, the overall lifting clamp body 1 is cylindrical. Two sets of U-shaped clamping seats are fixedly arranged on the outer side of the lifting clamp body 1. The ropes of the lifting device are fixed through the U-shaped clamping seats. When the lifting clamp body 1 is lifted, the pumping rod is sleeved through the through-hole 3 in the middle of the lifting clamp body 1. At this time, the external switches of the driving cylinders 59 on the first self-locking assembly 4 and the second self-locking assembly 5 are started, and the first self-locking assembly 4 and the second self-locking assembly 5 work synchronously to complete the clamping and fixing work of the pumping rod, so that when the lifting device lifts the pumping rod, the pumping rod will not come off, ensuring the stability during the lifting of the pumping rod; the working modes of the first self-locking assembly 4 and the second self-locking assembly 5 are the same. Here, only the working mode of the second self-locking assembly 5 will be described. The piston rod of the driving cylinder 59 on the second self-locking assembly 5 moves upward, causing the driving seat 58 to move upward. The driving seat 58 drives the force-bearing surface at the bottom of the self-locking seat 51 through the driving surface thereon, causing the self-locking seat 51 to move inward under force. By reducing the distance between the two clamping seats 54, the clamping and fixing work of the pumping rod is completed. The clamping seat 54 is arc-shaped, and its radian matches the radian of the outer surface of the pumping rod, so that the clamping seat 54 adheres to the outside of the pumping rod and is squeezed, which can increase the contact area and strength between the clamping seat 54 and the pumping rod, ensure the clamping force on the pumping rod, prevent it from falling, and improve the safety during the hoisting of the pumping rod.
[0023] As a preferred embodiment, the end of the guide rod 56 is fixedly arranged on the inner wall surface of the lifting clamp body 1, and springs 57 are installed on both guide rods 56, and the two guide rods 56 are arranged in parallel.
[0024] As can be seen from the above, during use, when the self-locking seat 51 moves inward, the guide rod 56 penetrates through the inside of the guide seat 55, and the spring 57 sleeved on the guide seat 55 can be compressed. When the driving seat 58 moves downward, the self-locking seat 51 is no longer stressed, and the compressed spring 57 is reset to complete the loosening of the pumping rod; as the use time and frequency of the clamping seat 54 increase, the clamping seat 54 will become thinner and thinner. To avoid reducing the clamping strength of the pumping rod, the severely worn clamping seat 54 can be replaced in time. Hold the clamping seat 54 and pull out the assembly strip 53 from the inside of the assembly groove 52. By replacing the clamping seat 54 in time, the safety of the equipment during use can be ensured.
[0025] As a preferred embodiment, the self-locking seat 51, the assembly groove 52 and the driving seat 58 are all made of metal and are right-angled trapezoidal structures. An inclined force-bearing surface is provided at the bottom of the self-locking seat 51, and an inclined driving surface is provided on the surface of the driving seat 58, and the slopes of the force-bearing surface and the driving surface are the same.
[0026] As a preferred embodiment, the card holder 54 is an arc-shaped structure made of rubber material. Two sets of assembly bars 53 are fixedly arranged on the back of the card holder 54. At the same time, assembly grooves 52 are formed on the surface of the self-locking seat 51, and the sizes of the assembly grooves 52 and the assembly bars 53 are adapted to each other. The assembly bars 53 are inserted into the interior of the assembly grooves 52. The cross-sections of the assembly grooves 52 and the assembly bars 53 are both circular. At the same time, the self-locking seat 51 and the card holder 54 are positioned and installed through the assembly grooves 52 and the assembly bars 53.
[0027] Working principle: When the operator is using it, the overall lifting clamp body 1 is cylindrical. Two sets of U-shaped card holders are fixedly arranged on the outer side of the lifting clamp body 1. The ropes of the lifting device are fixed through the U-shaped card holders. When the lifting clamp body 1 is lifted, the pumping rod is sleeved through the through hole 3 in the middle of the lifting clamp body 1. At this time, the external switches of the driving cylinders 59 on the first self-locking assembly 4 and the second self-locking assembly 5 are started, and the first self-locking assembly 4 and the second self-locking assembly 5 work synchronously to complete the clamping and fixing work of the pumping rod, so that when the lifting device lifts the pumping rod, the pumping rod will not come off, ensuring the stability when lifting the pumping rod; the working modes of the first self-locking assembly 4 and the second self-locking assembly 5 are the same. Here, only the working mode of the second self-locking assembly 5 is described. The piston rod of the driving cylinder 59 on the second self-locking assembly 5 moves upward, so that the driving seat 58 moves upward. The driving seat 58 drives the force-bearing surface at the bottom of the self-locking seat 51 through the driving surface thereon, so that the self-locking seat 51 moves inward under force, and the distance between the two card holders 54 is reduced to complete the clamping and fixing work of the pumping rod. The card holder 54 is arc-shaped, and its radian is adapted to the radian of the outer surface of the pumping rod, so that the card holder 54 adheres to the outside of the pumping rod and is squeezed, which can increase the contact area and strength between the card holder 54 and the pumping rod, ensure the clamping force on the pumping rod, prevent it from falling, and improve the safety when hoisting the pumping rod; when the self-locking seat 51 moves inward, the guide rod 56 is inserted into the guide seat 55, and the spring 57 sleeved on the guide seat 55 can be compressed. When the driving seat 58 moves downward, the self-locking seat 51 is no longer stressed, so that the compressed spring 57 is reset to complete the loosening and clamping work of the pumping rod; as the use time and frequency of the card holder 54 increase, the card holder 54 will become thinner and thinner. To avoid reducing the clamping strength on the pumping rod, the severely worn card holder 54 can be replaced in time. Hold the card holder 54 and pull the assembly bar 53 out of the interior of the assembly groove 52. By replacing the card holder 54 in time, the safety of the equipment during use can be ensured.
[0028] The embodiments of the present utility model are given for purposes of illustration and description. Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. A self-locking elevator, comprising an elevator body (1), characterized in that: A base (2) is fixedly installed at the bottom of the elevating sub body (1). A through hole (3) is formed in the middle of the elevating sub body (1). The diameter of the through hole (3) is larger than the diameter of the oil well sucker rod. A first self-locking assembly (4) is installed on one side inside the elevating sub body (1), and a second self-locking assembly (5) is installed on the other side inside the elevating sub body (1). The elevating sub body (1) clamps and fixes the sucker rod inserted therein through the second self-locking assembly (5) and the first self-locking assembly (4) inside. The second self-locking assembly (5) includes a driving cylinder (59) fixedly installed on the base (2). The piston rod at the top of the driving cylinder (59) is fixedly arranged at the bottom of the driving seat (58). A self-locking seat (51) is movably installed on the surface of the driving seat (58), and a clamping seat (54) covers the surface of the self-locking seat (51).
2. The self-locking elevator latch according to claim 1, wherein: The cross sections of the elevating sub body (1) and the base (2) are arranged in a "T" shape. The second self-locking assembly (5) and the first self-locking assembly (4) inside the elevating sub body (1) have the same structure, and the driving cylinders (59) on the second self-locking assembly (5) and the first self-locking assembly (4) operate synchronously.
3. The self-locking elevators described in claim 1 are characterized in that: Guide seats (55) are fixedly installed at both ends of the self-locking seat (51). Two groups of guide holes are formed in the guide seats (55). Guide rods (56) are inserted into the two groups of guide holes respectively.
4. The self-locking elevator latch according to claim 3, wherein: The ends of the guide rods (56) are fixedly arranged on the inner wall surface of the elevating sub body (1). Springs (57) are installed on the two groups of guide rods (56), and the two groups of guide rods (56) are arranged in parallel.
5. A self-locking elevator latch according to claim 1, wherein: The self-locking seat (51), the assembly groove (52) and the driving seat (58) are all made of metal and are right trapezoid structures. An inclined stress surface is formed at the bottom of the self-locking seat (51), and an inclined driving surface is formed on the surface of the driving seat (58). The slopes of the stress surface and the driving surface are the same.
6. The self-locking elevator latch according to claim 1, wherein: The clamping seat (54) is made of rubber and is an arc-shaped structure. Two groups of assembly strips (53) are fixedly arranged on the back of the clamping seat (54). An assembly groove (52) is formed on the surface of the self-locking seat (51). The sizes of the assembly groove (52) and the assembly strips (53) are adapted to each other. The assembly strips (53) are inserted into the assembly groove (52). The cross sections of the assembly groove (52) and the assembly strips (53) are both circular. The self-locking seat (51) and the clamping seat (54) are positioned and installed through the assembly groove (52) and the assembly strips (53).