Drawing device for cylinder sleeve

Abstract

The utility model relates to the technical field of equipment manufacturing, and discloses a cylinder sleeve drawing device which comprises a jaw body, a cylinder sleeve body is embedded in the inner wall of the jaw body, threaded holes are formed in the two ends of the jaw body, three supporting rods are connected in the threaded holes in a screwed mode, a supporting body is arranged on the outer side of the end of each supporting rod in a sleeved mode, and the supporting bodies are connected with the cylinder sleeve body in a screwed mode. A nut is spirally arranged on the outer side of the end, penetrating through the supporting body, of the supporting rod in a sleeving mode, a lead screw is rotationally and movably connected into the center of the supporting body, a thrust bearing is arranged between the lead screw and the supporting body, a gland is arranged at the right end of the lead screw in a sleeving mode, and a screw used for fastening and positioning is spirally connected to the eccentric position of the outer side of the gland. The pulling plate can be driven to assemble or draw the cylinder sleeve by rotating the screw rod, the structure is simple, the operation is convenient, and the correct posture of the cylinder sleeve in the assembling and drawing process can be effectively ensured, so that the smooth operation is ensured, the effects of quickly clamping, positioning and disassembling can be achieved, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of equipment manufacturing technology, specifically to a cylinder liner pulling device. Background Technology

[0002] In the assembly and maintenance of top drive series products, the assembly and disassembly of the jaw body hydraulic cylinder liner is a critical process. The assembly and disassembly process must ensure that the pressing and pulling are smooth and that other parts are not damaged. After assembly, the sealing performance of the cylinder liner must be guaranteed; otherwise, the pressure test will fail and the product cannot be put into use.

[0003] This process is also a difficult point in the assembly of the top drive system, especially in the field operation environment where maintenance conditions are poor. These assembly and disassembly operations are even more difficult, making it hard to guarantee assembly quality and resulting in low efficiency. Since the hydraulic cylinder liner of the jaw body is a consumable part, the assembly and disassembly of the cylinder liner are relatively frequent. Moreover, the pressure test requirements after the hydraulic cylinder liner is assembled are high, requiring simple, reliable, lightweight and easy-to-operate tooling.

[0004] To ensure the quality of assembly and disassembly of the hydraulic cylinder liner of the jaw body and improve work efficiency, a pulling device was designed based on the product assembly characteristics. This device is characterized by its simple structure and convenient operation. It can effectively ensure the correct posture of the cylinder liner during assembly and pulling, thereby ensuring smooth operation. It can play a role in quick clamping and positioning and quick disassembly, reducing labor intensity and improving work efficiency. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides the following technical solution: a cylinder liner pulling device, comprising a jaw body, wherein a cylinder liner body is embedded in the inner wall of the jaw body, threaded holes are opened at both ends of the jaw body, three support rods are screwed into the threaded holes, a support body is sleeved on the outer side of the end of each support rod, and a nut is screwed on the outer side of the end of each support rod that passes through the support body, a lead screw is rotatably connected to the center of the support body, and a thrust bearing is provided between the lead screw and the support body, a pressure cap is sleeved on the right end of the lead screw, and a screw for fastening and fixing is screwed on the eccentric outer side of the pressure cap, and a pull plate one and a pull plate two are screwed on the outer side of the left end of the lead screw, and the pull plate one and the pull plate two respectively abut against both sides of the cylinder liner body.

[0006] As an optimization, the strut array is provided with three struts, and both ends of the struts have threaded portions.

[0007] As an optimization, the lead screw is rotatably connected to the center of the support body via a thrust bearing.

[0008] As an optimization, the right end of the lead screw is hexagonal.

[0009] As an optimization, the pressure cap abuts against the right side of the center of the support body and is fixedly installed on the surface of the support body by screws.

[0010] As an optimization, both pull plate one and pull plate two have a stop, and the stop is respectively locked in the inner holes on both sides of the cylinder liner body.

[0011] The beneficial effects of this utility model are:

[0012] This cylinder liner pulling device uses a screw to rotate a pull plate to assemble or pull the cylinder liner. It has a simple structure and is easy to operate. It can effectively ensure the correct posture of the cylinder liner during assembly and pulling, thus ensuring smooth operation. It can also quickly clamp and position the cylinder liner and quickly disassemble it, reducing labor intensity and improving work efficiency. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0014] Fig. 2 This is a three-dimensional structural schematic diagram of the present utility model;

[0015] Fig. 3 This is a schematic diagram of the overall drawing structure of this utility model.

[0016] In the diagram: 1. Cylinder liner body; 2. Support rod; 3. Support body; 4. Nut; 5. Lead screw; 6. Thrust bearing; 7. Pressure cap; 8. Screw; 9. Pull plate one; 10. Pull plate two. Detailed Implementation

[0017] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figs. 1-3A cylinder liner pulling device includes a jaw body. A cylinder liner body 1 is embedded in the inner wall of the jaw body. Threaded holes are formed at both ends of the jaw body, and three support rods 2 are screwed into these holes. The three support rods 2 are arranged in an array, and both ends of each support rod 2 have threads. A support body 3 is fitted onto the outer side of the end of each support rod 2, and a nut 4 is screwed onto the outer side of the end of each support rod 2 passing through the support body 3. A lead screw 5 is rotatably connected to the center of the support body 3, and a thrust bearing 6 is provided between the lead screw 5 and the support body 3. The lead screw 5 is rotatably connected to the center of the support body 3 via the thrust bearing 6. The right end of the lead screw 5 is hexagonal, and a pressure cap 7 is fitted onto the right end of the lead screw 5. A tightening device is screwed onto the eccentric outer side of the pressure cap 7. The screw 8 and the pressure cap 7 are fixed to the right side of the center of the support body 3 and are fixedly installed on the surface of the support body 3 by the screw 8. The outer side of the left end of the lead screw 5 is provided with a pull plate 9 and a pull plate 10. Both pull plates 9 and 10 have a stop, and the stop is respectively locked in the inner holes on both sides of the cylinder liner body 1. Pull plates 9 and 10 abut against both sides of the cylinder liner body 1. By turning the outer hexagon on the right end of the lead screw 5 with a wrench, the lead screw 5 can be rotated. Therefore, the pull plate 10 can be driven to squeeze the cylinder liner body 1 into the cylinder liner mounting hole in the jaw body. Conversely, turning the lead screw 5 in the opposite direction can drive the pull plate 9 to pull the cylinder liner body 1 out of the cylinder liner mounting hole in the jaw body.

[0020] In use, first screw one end of the support rod 2 into the threaded hole at the end of the jaw body to install the support part. Then, put the support body 3 on the other side of the support rod 2, and then position the support body 3 by tightening the nut 4. The screw rod 5 is rotatably connected to the center of the support body 3 by the thrust bearing 6. Then, the cylinder liner can be installed and pulled by rotating the screw rod 5 to drive the pull plate 9 and pull plate 10.

[0021] During installation, the stop of pull plate 210 faces outward. At this time, the tooling is in a pressing state. The stop of pull plate 210 is inserted into the inner hole of the cylinder liner. Then, by using a wrench to turn the external hexagon at the end of the lead screw 5, the lead screw 5 can be rotated, which will cause pull plate 210 to squeeze the cylinder liner, thus pressing the cylinder liner and installing it into the cylinder liner mounting hole of the jaw body.

[0022] When pulling, the stop of pull plate 9 is facing inward. At this time, the tooling is in the pulling state. The stop of pull plate 9 is inserted into the inner hole on the other side of the cylinder liner. Then, by using a wrench to turn the external hexagon at the end of the lead screw 5, the lead screw 5 can be rotated, which will in turn drive pull plate 9 to pull the cylinder liner. The cylinder liner can then be pulled out of the cylinder liner mounting hole of the jaw body.

[0023] In summary, this cylinder liner pulling device can drive the pull plate to assemble or pull the cylinder liner by rotating the lead screw 5. It has a simple structure and is easy to operate. It can effectively ensure the correct posture of the cylinder liner during assembly and pulling, thereby ensuring smooth operation. It can play a role in quick clamping and positioning, quick disassembly, reduce labor intensity, and improve work efficiency.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0026] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A cylinder liner pulling device, comprising a jaw body, wherein a cylinder liner body (1) is embedded in the inner wall of the jaw body, characterized in that: The jaw body has threaded holes at both ends, and three support rods (2) are screwed into the threaded holes. A support body (3) is sleeved on the outer side of the end of the support rod (2), and a nut (4) is screwed on the outer side of the end of the support rod (2) through the support body (3). A lead screw (5) is rotatably connected in the center of the support body (3), and a thrust bearing (6) is provided between the lead screw (5) and the support body (3). A pressure cap (7) is sleeved on the right end of the lead screw (5), and a screw (8) for fastening and fixing is screwed on the outer eccentric part of the pressure cap (7). A pull plate one (9) and a pull plate two (10) are screwed on the outer side of the left end of the lead screw (5), and the pull plate one (9) and the pull plate two (10) respectively abut against the two sides of the cylinder liner body (1).

2. The cylinder liner pulling device according to claim 1, characterized in that: The array of support rods (2) consists of three rods, and both ends of the support rods (2) have threaded portions.

3. The cylinder liner pulling device according to claim 1, characterized in that: The lead screw (5) is rotatably connected to the center of the support body (3) via a thrust bearing (6).

4. The cylinder liner pulling device according to claim 1, characterized in that: The right end of the lead screw (5) is hexagonal.

5. The cylinder liner pulling device according to claim 1, characterized in that: The pressure cap (7) abuts against the center right side of the support body (3) and is fixedly installed on the surface of the support body (3) by screws (8).

6. The cylinder liner pulling device according to claim 1, characterized in that: Both the pull plate one (9) and the pull plate two (10) have a stop, and the stop is respectively locked in the inner hole on both sides of the cylinder liner body (1).

Images