A sucker rod hanger

Abstract

This application provides a sucker rod hanger, including a hanger body with through holes at both ends. A compression spring is installed in each through hole, and a spring bushing is threadedly connected to the inner wall of the through hole. The spring bushing includes: a first threaded cylinder with internal and external threads, threadedly connected to the through hole; a second threaded cylinder with a third thread on its outer circumferential surface, the third thread being adapted to the internal thread, and an end plate at one end; and a rotating component, located inside the second threaded cylinder and close to the end plate, with a rotating shaft coaxially arranged. The rotating shaft rotatably engages with the end plate and is coaxial with the second threaded cylinder. This arrangement facilitates the installation and removal of the compression spring. When the spring bushing needs to be removed to take out the compression spring, the first threaded cylinder can be unscrewed outwards, and the second threaded cylinder can be unscrewed from the first threaded cylinder, releasing the compression of the spring and reducing its potential energy, thereby improving safety.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and hoisting equipment technology, and in particular to a sucker rod clamp. Background Technology

[0002] In oilfield operations, sucker rod clamps are commonly used tools. Currently, sucker rod clamps include components such as the front tongue, rear tongue, and spring. Therefore, specific tools are required to assist in the assembly of sucker rod clamps, resulting in low assembly efficiency. Furthermore, due to the relatively large elastic force of the spring, workers may be injured during the disassembly and assembly of sucker rod clamps due to the spring rebound.

[0003] For the reasons mentioned above, Chinese utility model patent application number 2022234632419 discloses a sucker rod hanger that is easy to assemble. It features through holes at both ends of the hanger body, with a compression spring located between the inner walls of these holes. A spring bushing is threaded between the inner walls of the through holes. This design allows for the assembly of the front tongue, rear tongue, and cylindrical pin first, followed by the installation of the spring. Tightening the spring bushing compresses the spring, maintaining its elasticity and facilitating assembly. During disassembly, the spring bushing is removed first, the spring is taken out, and the elasticity is released before disassembling other components. This avoids the probability of the cylindrical pin popping out and causing injury due to the spring's elasticity, thus improving safety. However, in actual use, it was found that because the sucker rod hanger requires the spring to have elasticity during installation, the spring needs to have a certain amount of compression when assembled. Therefore, the free length of the spring is relatively long. Before the spring is compressed into the through hole, the end of the spring will protrude a certain length from the through hole. At this point, it is necessary to press the spring bushing against the end of the spring to apply pressure and then thread it to the end of the through hole to compress the spring. Because the spring has a certain amount of compression, when removing the spring bushing, it is necessary to apply a certain pressure to the spring just before the spring bushing is removed to counteract the spring's rebound force and prevent the spring bushing from rebounding. If inexperienced workers do not know the disassembly techniques, the spring bushing may rebound and break off, which still poses a certain safety hazard. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by providing a sucker rod hanger.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a sucker rod hanger, comprising a hanger body, wherein through holes are provided at both ends of the hanger body, a compression spring is disposed within the through holes, and a spring bushing is threadedly connected to the inner wall of the through holes, the spring bushing comprising: The first threaded cylinder includes internal and external threads and is connected to a through-hole threaded connection. The second threaded cylinder has a third thread on its outer circumferential surface, which is compatible with the internal thread, and an end plate is provided at one end. A rotating component is disposed inside the second threaded cylinder and close to the end plate. A rotating shaft is coaxially disposed thereon. The rotating shaft is rotatably engaged with the end plate and is coaxially disposed with the second threaded cylinder. The rotating shaft includes a limiting surface disposed opposite to the end plate.

[0006] Furthermore, a first flange plate is provided extending outward from the first end of the first threaded cylinder, and at least one snap-fit ​​portion is provided on the first flange plate.

[0007] Furthermore, the snap-fit ​​part is a snap-fit ​​hole.

[0008] Furthermore, the second end of the first threaded cylinder is provided with a constriction portion, the radial dimension of which is smaller than the radial dimension of the second threaded cylinder.

[0009] Furthermore, the end of the second threaded cylinder furthest from the end plate is provided with a guide portion that tapers inward.

[0010] Furthermore, the end plate has an internal hexagonal groove on the side opposite to the second threaded cylinder.

[0011] Furthermore, a rigid sleeve is connected to the middle area of ​​the end plate, and the internal hexagonal groove is the inner cavity of the rigid sleeve.

[0012] Furthermore, a mating hole is provided at the bottom of the internal hexagonal slot, and the rotating shaft is rotatably engaged with the mating hole.

[0013] Furthermore, the rotating component includes a connecting plate connected to the rotating shaft, a connecting cylinder connected to the connecting plate and extending toward the end plate, and an abutment plate disposed at the other end of the connecting cylinder, wherein the limiting surface is the surface of the abutment plate.

[0014] Furthermore, the connecting plate is provided with a stepped portion coaxial with the rotating shaft, and the height of the stepped portion is less than the axial dimension of the rotating shaft.

[0015] Compared with the prior art, the sucker rod clamp disclosed in this utility model has the following advantages: by setting the spring bushing to include a first threaded cylinder, a second threaded cylinder, and a rotating component, it is convenient to install and disassemble the compression spring. When it is necessary to remove the spring bushing to take out the compression spring, the first threaded cylinder can be screwed outward and the second threaded cylinder can be screwed out from the first threaded cylinder to release the compression of the spring first, reduce the potential energy of the spring, and thus improve safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a sucker rod hanger that is easy to assemble, as described in the background art.

[0017] Figure 2This is a schematic diagram of the overall structure of the spring bushing in a sucker rod hanger according to this utility model.

[0018] Figure 3 This is a bottom view schematic diagram of the spring bushing in a sucker rod hanger according to the present invention.

[0019] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the spring bushing at point AA in this invention.

[0020] Figure 5 for Figure 4 The enlarged structural diagram of part B in this utility model is shown below.

[0021] Figure 6 This is a schematic diagram of the structure of the first threaded cylinder in this utility model.

[0022] Figure 7 This is an exploded structural diagram of the second threaded cylinder and the rotating component in this utility model.

[0023] Figure 8 This is a schematic diagram of the structure when tools are used to assemble the spring bushing in this utility model.

[0024] Figure 9 This is a schematic diagram of the structure of the special tool in this utility model.

[0025] Figure 10 for Figure 4 The enlarged structural diagram at point C in this utility model is shown below.

[0026] In the diagram: 10. Spring bushing; 101. First threaded cylinder; 1010. First flange plate; 1011. Snap-fit ​​hole; 1012. Closure part; 1013. External thread; 1014. Internal thread; 102. Second threaded cylinder; 1020. Internal hexagonal groove; 10200. Rigid sleeve; 1021. Mating hole; 1022. Guide part; 1023. Third thread; 103. Rotating part; 103a. Connecting plate; 103a-1. Stepped part; 103b. Connecting cylinder; 1030. Abutment plate; 1031. Rotating shaft; 1032. Limiting surface; 104. Special wrench; 1040. Ring body; 1041. Handle; 1042. Insertion post; 105. Hexagonal wrench; 2. Hanging clamp body; 7. Compression spring. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0028] Please refer to Figure 1-8As a specific implementation method, the technical solution of this utility model is as follows: a sucker rod hanger, including a hanger body 2, wherein through holes are provided at both ends of the hanger body 2, a compression spring is provided in the through hole, and a spring bushing 10 is threadedly connected to the inner wall of the through hole, wherein the spring bushing 10 includes: The first threaded cylinder 101 includes an internal thread 1014 and an external thread 1013, and is threadedly connected to a through hole. The second threaded cylinder 102 has a third thread 1023 on its outer circumferential surface, which is adapted to the internal thread 1014, and an end plate is provided at one end. The rotating component 103 is disposed inside the second threaded cylinder 102 and close to the end plate. It is coaxially provided with a rotating shaft 1031, which is rotatably engaged with the end plate. The rotating shaft 1031 is coaxially provided with the second threaded cylinder 102 and includes a limiting surface 1032 disposed opposite to the end plate.

[0029] Specifically, it should be noted that the reference is... Figure 1 This application provides a sucker rod hanger and Figure 1The structure of the sucker rod hanger shown is basically the same, but the improvement lies in the following specific implementation: the spring bushing 10 includes a first threaded cylinder 101 and a second threaded cylinder 102. Both the first threaded cylinder 101 and the second threaded cylinder 102 are formed by rolling thin-walled metal cylinders, thereby forming an external thread 1013 and an internal thread 1014 on the side wall of the first threaded cylinder 101, and a third thread 1023 on the side wall of the second threaded cylinder 102. The second threaded cylinder 102 can be threaded into the first threaded cylinder 101. One end of the second threaded cylinder 102 includes an integrally formed end plate, and a rotating member 103 is provided on the side of the end plate near the other end of the second threaded cylinder 102. The rotating member 103 includes a limiting surface 1032. With this arrangement, since both the first threaded cylinder 101 and the second threaded cylinder 102 have axial dimensions, when installing the compression spring 77, the end of the first threaded cylinder 101 can be threaded into the through hole on the hanger body 2 first, and then the compression spring 7 can be passed through the first threaded cylinder. 101 is installed in the through hole, and then the end of the second threaded cylinder 102 is screwed to the end of the second threaded cylinder 102. At this time, the sum of the axial dimensions of the first threaded cylinder 101 and the second threaded cylinder 102 is greater than or equal to the length of the compression spring 7 extending out of the through hole. At this time, the limiting surface 1032 of the rotating part 103 contacts the end of the compression spring 7. Then, the first threaded cylinder 101 and the second threaded cylinder 102 are rotated, the first threaded cylinder 101 is screwed into the through hole, and the second threaded cylinder 102 is screwed into the first threaded cylinder 101, thereby compressing the compression spring 7. Of course, some experienced and skilled workers can directly screw the second threaded cylinder 102 into the first threaded cylinder 101. The spring bushing 10 can be installed using the existing conventional installation method. When it is necessary to disassemble the spring bushing 10 to remove the compression spring 7, the first threaded cylinder 101 can be screwed outward, and the second threaded cylinder 102 can be screwed out from the first threaded cylinder 101 to release the compression of the spring first, reduce the potential energy of the spring, and thus improve safety.

[0030] It should be noted that the reference Figure 2 This is a schematic diagram of the structure in which the second threaded cylinder 102 is fully assembled into the first threaded cylinder 101. At this time, the axial dimension of the spring bushing 10 is equal to the axial dimension of the existing spring bushing 10.

[0031] Furthermore, as a specific implementation method, refer to Figures 1-6 The first threaded cylinder 101 has a first flange 1010 extending outward from its first end, and the first flange 1010 has at least one snap-fit ​​portion. Specifically, by providing the first flange 1010, on the one hand, the first flange 1010 can form a limiting fit with the end of the through hole; on the other hand, by providing the snap-fit ​​portion on the first flange 101, it is convenient to transmit torque through the snap-fit ​​portion when rotating the first threaded cylinder 101, and it is convenient to disassemble the first threaded cylinder 101.

[0032] Furthermore, as a specific embodiment, the snap-fit ​​part is a snap-fit ​​hole 1011. Specifically, the snap-fit ​​hole 1011 includes four evenly spaced holes, as shown in the reference. Figure 8 , Figure 9 During the assembly of the spring bushing 10, a special tool is used. This tool includes a ring 1040 and a handle 1041. The inner ring dimension of the ring 1040 is larger than the radial dimension of the second threaded cylinder 102, allowing the second threaded cylinder 102 to pass through the ring 1040. Four insertion posts 1042 are evenly spaced on one side of the ring 1040, and these posts can be inserted into the snap-fit ​​holes 1011. Force is then applied through the handle 1041 to rotate the first threaded cylinder 101. The second threaded cylinder 102 can be driven by a hex wrench 105, allowing the first and second threaded cylinders 101 and 102 to be rotated separately using a special wrench 104 and a hex wrench 105, facilitating assembly.

[0033] Furthermore, as a specific implementation, in order to ensure that both the first threaded cylinder 101 and the second threaded cylinder 102 have axial positioning during assembly, refer to... Figure 4 , Figure 5 The second end of the first threaded cylinder 101 is provided with a constriction portion 1012, the radial dimension of which is smaller than that of the second threaded cylinder 102. By providing the constriction portion 1012, when the second threaded cylinder 102 is installed in place, its end abuts against the constriction portion 1012, thus preventing the second threaded cylinder 102 from rotating further inward, thereby positioning the second threaded cylinder 102.

[0034] Furthermore, as a preferred embodiment, refer to Figure 5 The second threaded cylinder 102 has a guide portion 1022 that tapers inward at the end furthest from the end plate. Specifically, preferably, by providing the guide portion 1022, on the one hand, it guides the second threaded cylinder 102 when it is threadedly connected to the first threaded cylinder 101, facilitating the connection; on the other hand, when the second threaded cylinder 102 is installed in place, the outer circumferential surface of the guide portion 1022 at the end connected to the second threaded cylinder 102 abuts against the inner circumferential surface of the constriction portion 1012, resulting in a large contact area and reducing the likelihood of localized compression damage.

[0035] Furthermore, as a specific implementation, the end plate has an internal hexagonal groove 1020 on the side opposite to the second threaded cylinder 102. Specifically, by providing the internal hexagonal groove 1020, it can be adapted to the hexagonal wrench 105, and the end of the second threaded cylinder 102 does not need to have a protrusion, thus avoiding interference with the lifting ring of the sucker rod clamp.

[0036] Furthermore, as a specific implementation, a rigid sleeve 10200 is connected to the middle area of ​​the end plate, and the internal hexagonal groove 1020 is the inner cavity of the rigid sleeve 10200.

[0037] Furthermore, as a specific implementation method, refer to Figure 4 , Figure 7 The bottom of the internal hexagonal groove 1020 is provided with a mating hole 1021, and the rotating shaft 1031 is rotatably engaged with the mating hole 1021. Specifically, the rotating shaft 1031 can be inserted into the mating hole 1021, and then the end of the rotating shaft 1031 is pressed down to deform the end, thereby axially limiting the rotating shaft 1031 and the second threaded cylinder 102. This processing method is a mature processing method in the field, with low cost, reliable structure, and reduced production cost.

[0038] Furthermore, as a specific implementation method, refer to Figure 4 The rotating component 103 includes a connecting plate 103a connected to the rotating shaft 1031, a connecting cylinder 103b connected to the connecting plate 103a and extending towards the end plate, and an abutment plate 1030 disposed at the other end of the connecting cylinder 103b. The limiting surface 1032 is the plate surface of the abutment plate 1030. Specifically, by setting the connecting cylinder 103b, the abutment plate 1030 can be positioned as close as possible to the end plate, thereby obtaining a larger axial space to accommodate the compression spring 7, which facilitates assembly. During installation, the compression spring 7 can be sleeved on the outside of the connecting cylinder 103b, with its end abutting against the abutment plate 1030.

[0039] Furthermore, as a specific implementation method, refer to Figure 9 The connecting plate 103a has a stepped portion 103a-1 coaxial with the rotating shaft 1031, and the height of the stepped portion 103a-1 is less than the axial dimension of the rotating shaft 1031. Specifically, the rotational engagement between the rotating shaft 1031 and the second threaded sleeve is a sliding engagement. By providing the stepped portion 103a-1 on the connecting plate 103a, during assembly, the stepped portion 103a-1 abuts against the end of the rigid sleeve 10200, so that the ends of the connecting plate 103a and the rigid sleeve 10200 are spaced apart, avoiding contact between the entire rough surface of the connecting plate 103a and the end of the rigid sleeve 10200, reducing the contact area. At this time, the top of the step can be polished to reduce the roughness, which can reduce the friction between the two and facilitate the smooth rotation of the rotating part 103.

[0040] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A sucker rod elevator, comprising an elevator body (2), both left and right ends of the elevator body (2) are provided with through holes, compression springs are arranged in the through holes, spring bushings (10) are threadedly connected to the inner walls of the through holes, characterized in that, The spring bushing (10) includes: The first threaded cylinder (101) includes an internal thread (1014) and an external thread (1013), and is threadedly connected to a through hole; The second threaded cylinder (102) has a third thread (1023) on its outer circumferential surface, which is adapted to the internal thread (1014), and an end plate is provided at one end; The rotating component (103) is disposed inside the second threaded cylinder (102) and close to the end plate. It has a rotating shaft (1031) coaxially disposed thereon. The rotating shaft (1031) rotates with the end plate and is coaxially disposed with the second threaded cylinder (102). It includes a limiting surface (1032) disposed opposite to the end plate.

2. A sucker rod elevator according to claim 1, characterized in that The first end of the first threaded cylinder (101) extends outward and is provided with a first flange plate (1010), and at least one snap-fit ​​part is provided on the first flange plate (1010).

3. A sucker rod clamp according to claim 2, characterized in that, The snap-fit ​​part is a snap-fit ​​hole (1011).

4. A sucker rod clamp according to claim 2, characterized in that, The second end of the first threaded cylinder (101) is provided with a constriction portion (1012), the radial dimension of which is smaller than the radial dimension of the second threaded cylinder (102).

5. A sucker rod clamp according to claim 4, characterized in that, The second threaded cylinder (102) has a guide part (1022) that is tapered inward at the end away from the end plate.

6. A sucker rod clamp according to claim 5, characterized in that, The end plate is provided with an internal hexagonal groove (1020) on the side opposite to the second threaded cylinder (102).

7. A sucker rod clamp according to claim 6, characterized in that, The middle area of ​​the end plate is connected to a rigid sleeve (10200), and the internal hexagonal groove (1020) is the inner cavity of the rigid sleeve (10200).

8. A sucker rod clamp according to claim 7, characterized in that, The bottom of the internal hexagonal slot (1020) is provided with a mating hole (1021), and the rotating shaft (1031) is rotatably engaged with the mating hole (1021).

9. A sucker rod clamp according to claim 8, characterized in that, The rotating component (103) includes a connecting plate (103a) connected to the rotating shaft (1031), a connecting cylinder (103b) connected to the connecting plate (103a) and extending toward the end plate, and an abutment plate (1030) disposed at the other end of the connecting cylinder (103b). The limiting surface (1032) is the plate surface of the abutment plate (1030).

10. A sucker rod clamp according to claim 9, characterized in that, The connecting plate (103a) is provided with a stepped portion (103a-1) coaxial with the rotating shaft (1031), and the height of the stepped portion (103a-1) is less than the axial dimension of the rotating shaft (1031).

Images