A reciprocating compressor piston dismounting device

Abstract

The utility model discloses a reciprocating compressor piston dismounting device belongs to equipment maintenance technical field. A reciprocating compressor piston dismounting device, including base, the first platform of elevating setting on the top surface of base, be provided with vertical elevating system on the base, be used for driving the vertical elevating of first platform, the first slide rail of fixed connection has on first platform, the second platform of sliding connection has on first slide rail, the second slide rail of fixed connection has on second platform, the piston clamping cylinder of sliding connection has on second slide rail, the first screw rod of screw connection has on extension board, and the axis of first screw rod coincides with the axis of piston clamping cylinder, the utility model can realize the axial linear motion of piston rod, avoid the problem of uneven force when manual pushing, and when the crane hoisting radius is insufficient or the height of workshop is limited, the piston can also be conveniently lifted, not only simple operation, but also difficult to cause muscle and bone injury, and then can reduce the operation cost, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance technology, and in particular to a piston disassembly and assembly device for a reciprocating compressor. Background Technology

[0002] Currently, in the maintenance of reciprocating piston compressors, the disassembly and assembly of piston assemblies still generally adopt the traditional manual operation mode. Due to the large weight of the piston body assembly and the high precision requirements of the assembly, especially in the reassembly stage, multiple operators need to work together. They need to manually hold the piston rings and support rings in an open state, and simultaneously push the piston body assembly.

[0003] This traditional operating method has several drawbacks. First, it is difficult to distribute the force evenly when applied manually, which can easily cause the piston rod to wobble and scratch the valuable metal sealing ring. Second, when operating in confined spaces, if the crane's lifting radius is insufficient or the factory height is limited (e.g., less than three meters), making it impossible to use the lifting equipment, the piston must be manually lifted, which is not only difficult to operate but also prone to causing musculoskeletal injuries. Therefore, it is urgent to design a reciprocating compressor piston disassembly and assembly device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem of the cumbersome disassembly and assembly of compressor pistons in the prior art, and to propose a reciprocating compressor piston disassembly and assembly device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A reciprocating compressor piston assembly / disassembly device includes a base and further includes: a first platform that is lifted and lowered on the top surface of the base, wherein the base is provided with a vertical lifting mechanism for driving the first platform to lift vertically; a first slide rail is fixedly connected to the first platform; a second platform is slidably connected to the first slide rail; a second slide rail is fixedly connected to the second platform; a piston clamping cylinder is slidably connected to the second slide rail; the extension directions of the first slide rail and the second slide rail are perpendicular to each other; and an extension plate fixedly connected to the second platform, wherein a first lead screw is threadedly connected to the extension plate, and the axis of the first lead screw coincides with the axis of the piston clamping cylinder.

[0007] To facilitate the lifting and moving of the first platform, preferably, the vertical lifting mechanism includes a third lead screw, at least two sets of guide cylinders are fixedly connected to the base, the first platform is slidably connected to the guide cylinders via guide rods, a connecting plate is fixedly connected to the outer wall of the guide cylinders, a threaded cylinder is fixedly connected to the connecting plate, the third lead screw is threadedly connected to the threaded cylinders, a limit tube is fixedly connected to the bottom of the first platform, and the top of the third lead screw abuts against the limit tube.

[0008] To facilitate the movement of the second platform, at least two sets of first pulleys are rotatably connected to the bottom of the second platform. The rolling surface of the first pulleys forms a rolling engagement with the guide groove of the first slide rail, and the axis of the first pulleys is perpendicular to the extension direction of the first slide rail.

[0009] To facilitate the adjustment of the position of the second platform, preferably, a fixing plate is fixedly connected to the first platform, and a second lead screw is threadedly connected to the fixing plate, with the end of the second lead screw abutting against the outer wall of the second platform.

[0010] To facilitate piston clamping, preferably, the piston clamping cylinder includes a first clamping plate and a second clamping plate, with the two sets of clamping plates combined to form the piston clamping cylinder liner.

[0011] To facilitate the pushing of the piston, preferably, at least two sets of second pulleys are rotatably connected to the bottom of the piston clamping cylinder, the rolling surface of the second pulleys forms a rolling fit with the guide groove of the second slide rail, and the axis of the second pulleys is perpendicular to the extension direction of the second slide rail.

[0012] Compared with the prior art, this utility model provides a piston disassembly and assembly device for a reciprocating compressor, which has the following beneficial effects:

[0013] 1. The piston disassembly and assembly device of this reciprocating compressor, through the coaxial design of the first lead screw and the piston clamping cylinder, can realize the axial linear movement of the piston rod, avoid the problem of uneven force application when manually pushing, and thus prevent scratching the high-value metal sealing ring;

[0014] 2. This reciprocating compressor piston disassembly and assembly device, through the combination design of a vertical lifting mechanism and moving wheels, allows the piston to be raised and lowered even when the factory height is limited, by adjusting the height of the first platform. When the crane's lifting radius is insufficient or the factory height is limited (such as less than three meters), making it impossible to use the lifting equipment, the piston can be raised and lowered conveniently. It is not only simple to operate, but also less likely to cause musculoskeletal injuries, thereby reducing operating costs and improving work efficiency.

[0015] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model can realize the axial linear movement of the piston rod, avoiding the problem of uneven force application when manually pushing. Furthermore, when the crane's lifting radius is insufficient or the factory height is limited, the piston can be easily raised and lowered. It is not only simple to operate, but also less likely to cause musculoskeletal injuries, thereby reducing operating costs and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a reciprocating compressor piston disassembly and assembly device proposed in this utility model;

[0017] Figure 2 This is a partial structural diagram of a reciprocating compressor piston assembly / disassembly device proposed in this utility model. Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of a reciprocating compressor piston assembly / disassembly device proposed in this utility model. Figure 2 ;

[0019] Figure 4 This is a partial structural diagram of a reciprocating compressor piston assembly / disassembly device proposed in this utility model. Figure 3 ;

[0020] Figure 5 This is a schematic diagram of a piston clamping cylinder for a reciprocating compressor piston assembly and disassembly device proposed in this utility model.

[0021] In the diagram: 1. Base; 2. Moving wheel; 3. Limiting plate; 4. Guide cylinder; 5. Connecting plate; 6. Threaded cylinder; 7. Third lead screw; 8. First platform; 9. Guide rod; 10. Limiting tube; 11. Fixing plate; 12. Second lead screw; 13. First slide rail; 14. Second platform; 15. First pulley; 16. Second slide rail; 17. First clamping plate; 18. Second pulley; 19. Second clamping plate; 20. Piston clamping cylinder; 21. Extension plate; 22. First lead screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example:

[0025] Reference Figures 1-5A reciprocating compressor piston assembly / disassembly device includes a base 1. A movable wheel 2, which can drive the base 1 to move, is provided at the bottom of the base 1. The movable wheel 2 can be a roller, and a brake assembly is provided on the roller for fixing the movable wheel 2. A limit plate 3 is provided on the outer wall of the base 1 for fixing and limiting the base 1. A handle is also provided on the base 1 for pushing the base 1. The base 1 is 900mm wide, and the limit plate 3 is 350mm long. Two sets of limit plates 3 are provided, with a distance of 750mm between the two sets of limit plates 3. Additionally, a first platform 8 is vertically mounted on the top surface of the base 1, and a vertical lifting mechanism is provided on the base 1 for driving the first platform 8 to move vertically. A first slide rail 1 is fixedly connected to the first platform 8. 3. A second platform 14 is slidably connected to the first slide rail 13. The second platform 14 is made of 50mm angle steel welded together. A second slide rail 16 is fixedly connected to the second platform 14. A piston clamping cylinder 20 is slidably connected to the second slide rail 16. The extension directions of the first slide rail 13 and the second slide rail 16 are perpendicular to each other, so that the first platform 8 can be raised and lowered on the base 1 to adjust the position of the first platform 8 and improve its flexibility. In addition, the second platform 14 can also drive the piston clamping cylinder 20 to move. An extension plate 21 is also fixedly installed on the second platform 14. A first lead screw 22 is threadedly connected to the extension plate 21. The axis of the first lead screw 22 coincides with the axis of the piston clamping cylinder 20. When the first lead screw 22 rotates, it can move along the axis of the piston clamping cylinder 20.

[0026] In the above solution, the coaxial design of the first lead screw 22 and the piston clamping cylinder 20 enables the axial linear movement of the piston rod, avoiding uneven force application during manual pushing and preventing damage to the high-value metal sealing ring. In addition, the combination design of the vertical lifting mechanism and the moving wheel 2 allows the piston to be raised and lowered even when the factory height is limited, through the height-adjustable first platform 8. When the crane's lifting radius is insufficient or the factory height is limited (e.g., less than three meters), making it impossible to use the lifting equipment, the piston can be raised and lowered conveniently. This not only makes the operation simple but also reduces the risk of musculoskeletal injuries, thereby reducing operating costs and improving work efficiency.

[0027] The base 1 is equipped with two sets of heavy-duty mobile wheels 2 with brake components, which have a load-bearing capacity of 1000kg. Together with the wide base 900mm and the limiting plate 3, they form a triangular stable structure (contact span 750mm), which can achieve quick positioning and fixation in narrow areas that cannot be covered by cranes, reducing the time spent moving under single-person conditions.

[0028] The aforementioned vertical lifting mechanism includes a third lead screw 7, at least two sets of guide cylinders 4 are fixedly connected to the base 1, the first platform 8 is slidably connected to the guide cylinder 4 via a guide rod 9, a connecting plate 5 is fixedly connected to the outer wall of the guide cylinder 4, a threaded cylinder 6 is fixedly connected to the connecting plate 5, the third lead screw 7 is threadedly connected to the threaded cylinder 6, a limit tube 10 is fixedly connected to the bottom of the first platform 8, the top of the third lead screw 7 abuts against the limit tube 10, the third lead screw 7 is a standard trapezoidal threaded rod of size M36, the third lead screw 7 and the thread inside the threaded cylinder 6 form a precision fit, the axial load capacity is greater than 8 tons, in addition, when the third lead screw 7 is rotated clockwise, it can drive the first platform 8 to move up and down, and at the same time make the guide rod 9 slide on the guide cylinder 4, the length of the guide cylinder 4 is 1200mm.

[0029] In addition, the first platform 8 is 900mm long and 750mm wide, and its overall load capacity is 750KG. The distance between the top surface of the first slide rail 13 and the bottom of the guide rod 9 is 1260mm. A fixed plate 11 is fixedly connected to the first platform 8, and a second lead screw 12 is threadedly connected to the fixed plate 11. The end of the second lead screw 12 abuts against the outer wall of the second platform 14. The second lead screw 12 uses an M22 standard trapezoidal thread rod. A threaded groove is provided on the fixed plate 11, and the second lead screw 12 and the thread on the fixed plate 11 form a precision fit. The axial load capacity is greater than 3 tons. At least two sets of first pulleys 15 are rotatably connected to the bottom of the second platform 14. The rolling surface of the first pulley 15 forms a rolling fit with the guide groove of the first slide rail 13. The axis of the first pulley 15 is perpendicular to the extension direction of the first slide rail 13 and is used to slide the second platform 14. When the second lead screw 12 is rotated clockwise, it can push the second platform 14 to move. The overall load capacity of the second platform 14 is 750KG.

[0030] The piston clamping cylinder 20 includes a first clamping plate 17 and a second clamping plate 19. The two clamping plates are combined to form the inner liner of the piston clamping cylinder 20 for clamping the piston of the reciprocating compressor. At least two sets of second pulleys 18 are rotatably connected to the bottom of the piston clamping cylinder 20. The rolling surface of the second pulley 18 forms a rolling engagement with the guide groove of the second slide rail 16. The axis of the second pulley 18 is perpendicular to the extension direction of the second slide rail 16 for moving the piston clamping cylinder 20. The first clamping plate 17 and the second clamping plate 19 are both arc-shaped clamping plates. The piston clamping cylinder 20 is detachable and divided into two halves. The two sets of piston clamping cylinders 20 can also be locked and fixed by locking bolts.

[0031] The working principle is as follows: The base 1 is moved to the working position, the rollers on the moving wheel 2 are locked, and the base 1 is fixed by the limiting plate 3. Then, the concentricity of the piston clamping cylinder 20 and the piston body is adjusted. The second lead screw 12 is rotated to control the left-right position adjustment of the second platform 14, and the third lead screw 7 is rotated to control the height position of the first platform 8. Finally, the front-back position of the piston clamping cylinder 20 on the second slide rail 16 is adjusted. When the piston body is removed, the piston body pull plate is mounted on the first lead screw 22, and then the pull plate is connected to the piston body. The first lead screw 22 is rotated to pull the piston body into the piston clamping cylinder 20. The first clamping plate 17 and the second clamping plate 19 inside the piston clamping cylinder 20 are used to hold the piston... Once the piston body is fixed, rotate the first screw 22 to pull it out. When reinstalling the piston body, install the piston ring and support ring on the first clamping plate 17, and adjust the opening position in advance. Then cover the first clamping plate 17 with the second clamping plate 19. After locking the pipe with the piston clamping cylinder 20, rotate the first screw 22 to push the piston clamping cylinder 20 into the cylinder. After the first piston ring or support ring enters the cylinder, use the fixing set screw to fix the piston clamping cylinder 20 on the second platform 14. Then continue to rotate the first screw 22 to directly push the piston body. The support ring will make a relative movement with the inner diameter surface of the piston body clamp, and then directly push the piston body into the cylinder.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A reciprocating compressor piston dismounting device comprising a base (1), characterized in that, Also includes: The lifting mechanism is set on the first platform (8) on the top surface of the base (1). The base (1) is provided with a vertical lifting mechanism for driving the first platform (8) to lift vertically. The first platform (8) is fixedly connected to a first slide rail (13). The first slide rail (13) is slidably connected to a second platform (14). The second platform (14) is fixedly connected to a second slide rail (16). The second slide rail (16) is slidably connected to a piston clamping cylinder (20). The extension directions of the first slide rail (13) and the second slide rail (16) are perpendicular to each other. An extension plate (21) is fixedly connected to the second platform (14). The extension plate (21) is threaded with a first lead screw (22), the axis of which coincides with the axis of the piston clamping cylinder (20).

2. A reciprocating compressor piston removal device according to claim 1, wherein The vertical lifting mechanism includes a third lead screw (7), at least two sets of guide cylinders (4) are fixedly connected to the base (1), the first platform (8) is slidably connected to the guide cylinder (4) through a guide rod (9), a connecting plate (5) is fixedly connected to the outer wall of the guide cylinder (4), a threaded cylinder (6) is fixedly connected to the connecting plate (5), the third lead screw (7) is threadedly connected to the threaded cylinder (6), a limiting tube (10) is fixedly connected to the bottom of the first platform (8), and the top of the third lead screw (7) abuts against the limiting tube (10).

3. A reciprocating compressor piston removal device according to claim 1, wherein The bottom of the second platform (14) is rotatably connected to at least two sets of first pulleys (15). The rolling surface of the first pulley (15) forms a rolling fit with the guide groove of the first slide rail (13). The axis of the first pulley (15) is perpendicular to the extension direction of the first slide rail (13).

4. A reciprocating compressor piston removal device according to claim 3, wherein A fixing plate (11) is fixedly connected to the first platform (8), and a second lead screw (12) is threadedly connected to the fixing plate (11). The end of the second lead screw (12) abuts against the outer wall of the second platform (14).

5. A reciprocating compressor piston removal device according to claim 1, wherein The piston clamping cylinder (20) includes a first clamping plate (17) and a second clamping plate (19), and the two sets of clamping plates are combined to form the inner liner of the piston clamping cylinder (20).

6. A reciprocating compressor piston removal device according to claim 5, wherein, The bottom of the piston clamping cylinder (20) is rotatably connected to at least two sets of second pulleys (18). The rolling surface of the second pulley (18) forms a rolling fit with the guide groove of the second slide rail (16). The axis of the second pulley (18) is perpendicular to the extension direction of the second slide rail (16).

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