A compressor crankshaft counterweight hot-joint device
By designing a compressor crankshaft balance block heat-shrinking device, utilizing a motor-driven push rod and threaded rod system and an electromagnetic heating coil, the problems of temperature and positioning errors during manual heating are solved, enabling rapid and stable installation of the balance block.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGBEI ELECTROMECHANICAL (JIANGSU) CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, artificially heating the compressor crankshaft balance block results in large temperature and positioning errors, leading to unstable installation.
A compressor crankshaft balance block heat fitting device is adopted, which uses a system of multiple push rods and threaded rods driven by a motor, in conjunction with an electromagnetic heating coil, to achieve precise heating and stable installation of the balance block, and uses limiting and guiding structures to improve the stability of the fixed seat.
This enables rapid and stable installation of the balance weights, reduces human error, and improves the accuracy and stability of the installation.
Smart Images

Figure CN224587384U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor crankshaft connecting rod technology, and in particular to a compressor crankshaft balance block heat sleeve device. Background Technology
[0002] Balance weights are used to balance the centrifugal forces and torques generated by the crankshaft connecting rod journals and crankshaft, ensuring smooth crankshaft operation and reducing the load on the main journal bearings. Balance weights are installed on the compressor crankshaft to balance the centrifugal forces and torques generated by the connecting rod big end, connecting rod journals, and crankshaft, thereby ensuring smooth compressor operation and reducing the load on the main journals.
[0003] However, the existing technology still has shortcomings. In the existing technology, the balance weight is manually picked up, heated by the discharge high-frequency heater, placed on the crankshaft journal, and then pressed into the crankshaft journal by pressing the switch and using a press. This technology has defects such as large temperature error during manual heating and large positioning error when placing the balance weight into the crankshaft journal.
[0004] Therefore, we propose a compressor crankshaft balance block heat-shrinking device to solve this problem. Utility Model Content
[0005] The purpose of this utility model is to solve the problems mentioned in the background art and to provide a compressor crankshaft balance block heat jacket device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A compressor crankshaft balance block heat-shrinking device includes a base; a first sliding groove is provided on the upper surface of the base; a motor is fixedly connected to one outer surface of the base; a first fixing seat is fixedly connected to the upper surface of the base; a first mounting bracket is fixedly connected to one side of the upper surface of the base; a second sliding groove is provided on one outer surface of the first mounting bracket; a limiting groove is provided on one outer surface of the first mounting bracket; a sliding hole is provided on the upper surface of the first mounting bracket; a first electric push rod is fixedly connected to the upper surface of the first mounting bracket; a second fixing seat is fixedly connected to the lower end of the first electric push rod; a guide rod is fixedly connected to the upper surface of the second fixing seat; a limiting bracket is fixedly connected to one outer surface of the second fixing seat; a mounting seat is slidably mounted on the inner surface of the first sliding groove; a threaded groove is provided on the inner surface of the mounting seat; the threaded groove is slidably mounted on the inner surface of the first sliding groove; the second fixing seat is slidably mounted on the inner surface of the first sliding groove; the second fixing seat is slidably mounted on the inner surface of the first sliding groove; the third fixing seat is slidably mounted on the inner surface of the first sliding groove; the fourth fixing seat is slidably mounted on the inner surface of the first mounting seat; the fifth fixing seat is slidably mounted on the inner surface of the first mounting seat; the sixth fixing seat is slidably mounted on the inner surface of the first mounting seat; the seventh fixing seat is slidably mounted on the inner surface of the first mounting seat; the eighth fixing seat is slidably mounted on the inner surface of the first mounting seat; the ninth fixing seat is slidably mounted on the inner surface of the first mounting seat; the tenth ... A threaded rod is rotatably mounted on the inner surface of the groove; a second electric actuator is fixedly connected to the upper surface of the mounting base; a mounting plate is fixedly connected to the upper surface of the second electric actuator; a third sliding groove is provided on one side of the upper surface of the mounting plate; a mounting base is fixedly connected to the other side of the upper surface of the mounting plate; a third electric actuator is fixedly connected to the inner surface of the mounting plate; a mounting groove is provided on the upper surface of the mounting base; a balance block body is slidably mounted on the inner surface of the mounting groove; a limit block is slidably mounted on the inner surface of the third sliding groove; a second mounting bracket is fixedly connected to the upper surface of the limit block; a fourth electric actuator is fixedly connected to the upper surface of the second mounting bracket; a third mounting bracket is located on the upper surface of the fourth electric actuator; a distributor is fixedly connected to the upper surface of the third mounting bracket; an electromagnetic heating coil is fixedly connected to one outer surface of the third mounting bracket.
[0008] Preferably, the limiting frame is slidably installed on the inner surface of the second sliding groove; the limiting frame is slidably installed on the inner surface of the limiting groove.
[0009] Preferably, both ends of the threaded rod are rotatably mounted on the inner surface of the base; the output end of the motor is fixedly connected to one end of the threaded rod.
[0010] Preferably, the guide rod is slidably mounted on the inner surface of the sliding hole; one end of the third electric actuator is fixedly connected to the second mounting bracket.
[0011] Preferably, the electromagnetic heating coil is attached to the outer surface of the mounting base.
[0012] In this utility model, a compressor crankshaft balance block heat-shrinking device is provided. The device comprises a base, a first sliding groove, a motor, a first fixed seat, a first mounting bracket, a second sliding groove, a limiting groove, a sliding hole, a first electric actuator, a guide rod, a second fixed seat, a limiting bracket, a mounting base, a threaded groove, a threaded rod, a second electric actuator, a mounting plate, a third sliding groove, a third electric actuator, a mounting base, a mounting groove, a balance block body, a limiting block, a second mounting bracket, a fourth electric actuator, a third mounting bracket, an electromagnetic heating coil, and a distributor. When installing the balance block body, the balance block body is placed in the mounting groove, the crankshaft body is placed in the first fixed seat, and then the first electric actuator is activated. The first electric actuator will drive the second fixed seat to fix the crankshaft body. Then, the fourth electric actuator is activated. The fourth electric actuator moves the third mounting bracket downwards, attaching the electromagnetic heating coil to the outer surface of the mounting base to heat the balance weight body. After heating, the fourth electric actuator is activated again, causing the third mounting bracket to move upwards, thus lifting the electromagnetic heating coil away from the mounting base. Then, the third electric actuator is activated, moving the second mounting bracket. This movement lifts the electromagnetic heating coil away from the top of the mounting base. Finally, the motor is activated, causing the threaded rod to rotate. This rotation moves the mounting seat, which in turn lifts the balance weight body into the crankshaft body, completing the installation. This process enables rapid installation of the balance weight body and improves stability during installation.
[0013] In this utility model, the compressor crankshaft balance block heat sleeve device, through the setting of the second sliding groove, the limiting groove, the limiting frame, and the guide rod, the limiting frame will improve the stability of the second fixed seat, and the guide rod will further improve the stability of the second fixed seat.
[0014] This utility model has a reasonable structural design, is simple to operate, and has high reliability. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a compressor crankshaft balance block heat jacket device proposed in this utility model;
[0016] Figure 2 This is a three-dimensional structural diagram of the No. 2 fixing base in this utility model;
[0017] Figure 3 This is a partial three-dimensional structural diagram of a compressor crankshaft balance block heat jacket device proposed in this utility model;
[0018] Figure 4 This is a partial three-dimensional structural diagram of a compressor crankshaft balance block heat-shrinking device proposed in this utility model.
[0019] In the diagram: 1. Base; 2. Slide No. 1; 3. Motor; 4. Fixed Base No. 1; 5. Mounting Bracket No. 1; 6. Slide No. 2; 7. Limiting Slot; 8. Sliding Hole; 9. Electric Actuator No. 1; 10. Guide Rod; 11. Fixed Base No. 2; 12. Limiting Bracket; 13. Mounting Base; 14. Threaded Slot; 15. Threaded Rod; 16. Electric Actuator No. 2; 17. Mounting Plate; 18. Slide No. 3; 19. Electric Actuator No. 3; 20. Mounting Base; 21. Mounting Slot; 22. Balance Block Body; 23. Limiting Block; 24. Mounting Bracket No. 2; 25. Electric Actuator No. 4; 26. Mounting Bracket No. 3; 27. Electromagnetic Heating Coil; 28. Power Distributor. Detailed Implementation
[0020] 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.
[0021] Reference Figure 1-4 A compressor crankshaft balance block heat-shrinking device includes a base 1; a first sliding groove 2 is provided on the upper surface of the base 1; a motor 3 is fixedly connected to one outer surface of the base 1; a first fixing seat 4 is fixedly connected to the upper surface of the base 1; a first mounting bracket 5 is fixedly connected to one side of the upper surface of the base 1; a second sliding groove 6 is provided on one outer surface of the first mounting bracket 5; a limiting groove 7 is provided on one outer surface of the first mounting bracket 5; a sliding hole 8 is provided on the upper surface of the first mounting bracket 5; a first electric push rod 9 is fixedly connected to the upper surface of the first mounting bracket 5; a second fixing seat 11 is fixedly connected to the lower end of the first electric push rod 9; a guide rod 10 is fixedly connected to the upper surface of the second fixing seat 11; a limiting bracket 12 is fixedly connected to one outer surface of the second fixing seat 11; a mounting seat 13 is slidably installed on the inner surface of the first sliding groove 2; a threaded groove 14 is provided on the inner surface of the mounting seat 13; the inner surface of the threaded groove 14 is rotatably mounted on... The mounting base 13 is equipped with a threaded rod 15; a second electric actuator 16 is fixedly connected to the upper surface of the mounting base 13; a mounting plate 17 is fixedly connected to the upper surface of the second electric actuator 16; a third sliding groove 18 is provided on one side of the upper surface of the mounting plate 17; a mounting base 20 is fixedly connected to the other side of the upper surface of the mounting plate 17; a third electric actuator 19 is fixedly connected to the inner surface of the mounting plate 17; a mounting groove 21 is provided on the upper surface of the mounting base 20; a balance block body 22 is slidably installed on the inner surface of the mounting groove 21; a limit block 23 is slidably installed on the inner surface of the third sliding groove 18; a second mounting bracket 24 is fixedly connected to the upper surface of the limit block 23; a fourth electric actuator 25 is fixedly connected to the upper surface of the second mounting bracket 24; a third mounting bracket 26 is fixedly connected to the upper surface of the fourth electric actuator 25; a distributor 28 is fixedly connected to the upper surface of the third mounting bracket 26; an electromagnetic heating coil 27 is fixedly connected to one outer surface of the third mounting bracket 26.
[0022] Furthermore, the limiting bracket 12 is slidably installed on the inner surface of the second sliding groove 6; the limiting bracket 12 is slidably installed on the inner surface of the limiting groove 7.
[0023] Furthermore, both ends of the threaded rod 15 are rotatably mounted on the inner surface of the base 1; the output end of the motor 3 is fixedly connected to one end of the threaded rod 15.
[0024] Furthermore, the guide rod 10 is slidably mounted on the inner surface of the sliding hole 8; one end of the third electric actuator 19 is fixedly connected to the second mounting bracket 24.
[0025] Furthermore, the electromagnetic heating coil 27 is attached to the outer surface of the mounting base 20.
[0026] In this invention, during installation, the balance block body 22 is placed in the mounting slot 21, and the crankshaft body is placed in the first fixing seat 4. Then, the first electric actuator 9 is activated, which moves the second fixing seat 11 to fix the crankshaft body. The fourth electric actuator 25 is activated, which moves the third mounting bracket 26 downward, connecting the electromagnetic heating coil 27 to the outer surface of the mounting base 20 to heat the balance block body 22. After heating, the fourth electric actuator 25 is activated again, which moves the third mounting bracket 26 upward, thereby causing the electromagnetic heating coil 27 to move away. Install the base 20, then start the third electric actuator 19. The third electric actuator 19 will drive the second mounting bracket 24 to move. The movement of the second mounting bracket 24 will move the electromagnetic heating coil 27 away from the top of the mounting base 20. Then start the motor 3. The motor 3 will drive the threaded rod 15 to rotate. The rotation of the threaded rod 15 will drive the mounting seat 13 to move. The movement of the mounting seat 13 will drive the balance block body 22 into the crankshaft body, completing the installation. This achieves rapid installation of the balance block body 22 and improves the stability during installation. The limit bracket 12 will improve the stability of the second fixed seat 11, and the guide rod 10 will further improve the stability of the second fixed seat 11.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A compressor crankshaft balance block heat jacket device, characterized in that, Includes a base (1); the upper surface of the base (1) is provided with a first sliding groove (2); a motor (3) is fixedly connected to one side of the outer surface of the base (1); a first fixing seat (4) is fixedly connected to the upper surface of the base (1); a first mounting bracket (5) is fixedly connected to one side of the upper surface of the base (1); a second sliding groove (6) is provided on one side of the outer surface of the first mounting bracket (5); a limiting groove (7) is provided on one side of the outer surface of the first mounting bracket (5); a sliding hole (8) is provided on the upper surface of the first mounting bracket (5); the... A first electric actuator (9) is fixedly connected to the upper surface of the first mounting bracket (5); a second fixed seat (11) is fixedly connected to the lower end of the first electric actuator (9); a guide rod (10) is fixedly connected to the upper surface of the second fixed seat (11); a limit bracket (12) is fixedly connected to one outer surface of the second fixed seat (11); a mounting base (13) is slidably installed on the inner surface of the first slide groove (2); a threaded groove (14) is provided on the inner surface of the mounting base (13); a threaded rod is rotatably installed on the inner surface of the threaded groove (14). 15); A second electric actuator (16) is fixedly connected to the upper surface of the mounting base (13); a mounting plate (17) is fixedly connected to the upper surface of the second electric actuator (16); a third sliding groove (18) is provided on one side of the upper surface of the mounting plate (17); a mounting base (20) is fixedly connected to the other side of the upper surface of the mounting plate (17); a third electric actuator (19) is fixedly connected to the inner surface of the mounting plate (17); a mounting groove (21) is provided on the upper surface of the mounting base (20); the inner surface of the mounting groove (21) slides The balance block body (22) is installed; the inner surface of the third slide groove (18) is slidably installed with a limit block (23); the upper surface of the limit block (23) is fixedly connected with a second mounting bracket (24); the upper surface of the second mounting bracket (24) is fixedly connected with a fourth electric push rod (25); the upper surface of the fourth electric push rod (25) is fixedly connected with a third mounting bracket (26); the upper surface of the third mounting bracket (26) is fixedly connected with a distributor (28); an electromagnetic heating coil (27) is fixedly connected to one outer surface of the third mounting bracket (26).
2. The compressor crankshaft balance block heat-shrinking device according to claim 1, characterized in that, The limiting frame (12) is slidably installed on the inner surface of the second slide groove (6); the limiting frame (12) is slidably installed on the inner surface of the limiting groove (7).
3. The compressor crankshaft balance block heat-shrinking device according to claim 1, characterized in that, The two ends of the threaded rod (15) are rotatably mounted on the inner surface of the base (1); the output end of the motor (3) is fixedly connected to one end of the threaded rod (15).
4. The compressor crankshaft balance block heat-shrinking device according to claim 1, characterized in that, The guide rod (10) is slidably mounted on the inner surface of the sliding hole (8); one end of the third electric push rod (19) is fixedly connected to the second mounting bracket (24).
5. A compressor crankshaft balance block heat-shrinking device according to claim 1, characterized in that, The electromagnetic heating coil (27) is sleeved on the outer surface of the mounting base (20).