Compressor rotor internal precision fixing and assembling device

Abstract

The utility model discloses a compressor rotor internal precision fixed assembly device, which relates to the compressor rotor assembly technical field, and comprises a processing table, a rolling rotor and an eccentric shaft, and also comprises an automatic positioning assembly structure arranged on the processing table and used for automatic positioning when the rolling rotor and the eccentric shaft are assembled; the automatic positioning and assembling structure comprises a fixing frame, a hydraulic cylinder is installed on the top of the fixing frame, a plurality of sets of fixing pieces are installed on the top of the machining table, rotating pieces are hinged to the inner sides of the fixing pieces through torsional springs, limiting pieces are connected to the tops of the rotating pieces, and connecting pieces are hinged to the bottom ends of the limiting pieces. A plurality of sets of first sliding grooves are formed in the top of the machining table, circular shafts are fixed to the bottom ends of the first sliding grooves, extrusion discs are arranged at the bottoms of the first sliding grooves, and the outer surface of the rolling rotor is extruded through limiting pieces, so that the rolling rotor can be automatically positioned, and an eccentric shaft and the rolling rotor can be conveniently assembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor rotor assembly technical field, concretely is a kind of compressor rotor internal precision fixed assembly device. BACKGROUND

[0002] Compressor is the driven fluid machinery of low-pressure gas to high-pressure gas, and it is the heart of refrigeration system. It sucks low-temperature and low-pressure refrigerant gas from the suction pipe, and after being compressed by the piston driven by the motor, it discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] When assembling the rolling rotor of the compressor, the eccentric shaft needs to be installed inside it. When assembling the rolling rotor and the eccentric shaft, since they are interference fit, the rolling rotor needs to be positioned first and then the eccentric shaft is assembled by pressing with a tool. When positioning the rolling rotor, the positioning structure needs to be adjusted by electric or manual method, so that it takes time to position the rolling rotor and the eccentric shaft each time, which is not conducive to quick assembly. SUMMARY

[0004] The utility model discloses a kind of compressor rotor internal precision fixed assembly devices to make up for the deficiency of prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of compressor rotor internal precision fixed assembly device, including processing table, rolling rotor and eccentric shaft, further comprising:

[0006] The automatic positioning assembly structure is arranged on the processing table and used for automatically positioning when assembling the rolling rotor and the eccentric shaft.

[0007] The automatic positioning assembly structure includes a fixing frame, which is installed on one side of the processing table. A hydraulic cylinder is installed on the top of the fixing frame. A plurality of sets of fixing members are installed on the top of the processing table. A torsional spring is connected to the inner side of the fixing member to form a rotating member. A limiting member is connected to the top of the rotating member. A connecting member is connected to the bottom end of the limiting member. A plurality of sets of first sliding grooves are formed on the top of the processing table. A circular shaft is fixed to the bottom end of the first sliding groove. An extrusion disc is arranged at the bottom of the first sliding groove. A second sliding groove is formed on the outer side of the extrusion disc. A first circular tube is installed on the top of the extrusion disc. A second circular tube is sleeved on the top of the first circular tube. A first spring is sleeved between the first circular tube and the second circular tube. A recess is formed on one side of the fixing frame. A fixing rod is installed in the recess. A second spring and a movable frame are sleeved on the outer surface of the fixing rod.

[0008] As described above, the eccentric shaft is sleeved on the inner side of the movable frame, the rolling rotor is sleeved on the outer surface of the second circular tube, and when the hydraulic cylinder presses the eccentric shaft, the eccentric shaft and the rolling rotor are sleeved together, and the eccentric shaft and the rolling rotor are interference-fitted.

[0009] As mentioned above, the second spring is elastically supported between the groove and the movable frame. There are two sets of the second spring, with the two sets of second springs located on both sides of the movable frame.

[0010] As described above, the circular shaft is slidably connected to the second slide groove, and the connecting member passes through the first slide groove and is slidably connected to the first slide groove.

[0011] As described above, the top end of the limiting member is arc-shaped, and rubber is adhered to the top end of the limiting member. The limiting member is in extrusive contact with the outer surface of the rolling rotor.

[0012] As described above, the bottom end of the eccentric shaft is in contact with the second circular tube, and the first spring provides elastic support between the first and second circular tubes.

[0013] Compared with the prior art, this precision fixing assembly device inside the compressor rotor has the following advantages:

[0014] I. This utility model involves fitting a rolling rotor onto the outer surface of a second circular tube and fitting the top end of an eccentric shaft onto the inner side of a movable frame. Simultaneously, a hydraulic cylinder is controlled to compress the eccentric shaft and the movable frame. At this time, the eccentric shaft compresses the second circular tube, causing it to push the first circular tube and the extrusion disc through the elastic force of the first spring. When the extrusion disc moves downward, it drives the circular shaft through the second sliding groove and pulls the connecting piece downward. At this time, the connecting piece pulls the limiting piece and drives the rotating piece to rotate along the top of the fixed piece. Thus, the outer surface of the rolling rotor can be compressed through the limiting piece, thereby automatically positioning the rolling rotor and facilitating the assembly of the eccentric shaft and the rolling rotor.

[0015] Second, this utility model facilitates the placement of the rolling rotor through the cooperation between the rolling rotor and the second round tube. At the same time, through the cooperation between the eccentric shaft and the second round tube, the second round tube can be separated from the rolling rotor when the eccentric shaft squeezes the second round tube. The limiting component will automatically position the outer side of the rolling rotor. Meanwhile, since the inner wall of the movable frame and the second round tube are in the same position, the eccentric shaft and the rolling rotor can be accurately positioned.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the side of the present invention;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a schematic diagram of the disassembly structure of the extrusion disc of this utility model;

[0021] Figure 5 This is a schematic diagram of the disassembly structure of the rolling rotor and eccentric shaft of this utility model.

[0022] In the diagram: 1. Processing table; 2. Fixed frame; 3. Hydraulic cylinder; 4. Fixed component; 5. Rotating component; 6. Limiting component; 7. Connecting component; 8. First slide groove; 9. Round shaft; 10. Extrusion plate; 11. Second slide groove; 12. First round tube; 13. Second round tube; 14. First spring; 15. Rolling rotor; 16. Eccentric shaft; 17. Groove; 18. Fixed rod; 19. Second spring; 20. Movable frame. Detailed Implementation

[0023] 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.

[0024] like Figures 1-5 As shown, this utility model provides a precision fixing assembly device for the internal structure of a compressor rotor, including a machining table 1, a rolling rotor 15, and an eccentric shaft 16, and further comprising:

[0025] An automatic positioning assembly structure is set on the processing table 1 and is used for automatic positioning during the assembly of the rolling rotor 15 and the eccentric shaft 16.

[0026] The automatic positioning assembly structure includes a fixed frame 2, which is installed on one side of the processing table 1. A hydraulic cylinder 3 is installed on the top of the fixed frame 2. Several sets of fixing parts 4 are installed on the top of the processing table 1. A rotating part 5 is hinged to the inner side of the fixing part 4 by a torsion spring. A limiting part 6 is connected to the top of the rotating part 5. A connecting part 7 is hinged to the bottom end of the limiting part 6. Several sets of first sliding grooves 8 are opened on the top of the processing table 1. A round shaft 9 is fixed to the bottom end of the first sliding groove 8. An extrusion plate 10 is provided at the bottom of the first sliding groove 8. A second sliding groove 11 is opened on the outer side of the extrusion plate 10. A first round tube 12 is installed on the top of the extrusion plate 10. A second round tube 13 is sleeved on the top of the first round tube 12. A first spring 14 is sleeved between the first round tube 12 and the second round tube 13. A groove 17 is opened on one side of the fixed frame 2. A fixing rod 18 is installed inside the groove 17. A second spring 19 and a movable frame 20 are sleeved on the outer surface of the fixing rod 18.

[0027] By fitting the rolling rotor 15 onto the outer surface of the second round tube 13 and fitting the top end of the eccentric shaft 16 onto the inner side of the movable frame 20, while controlling the hydraulic cylinder 3 to squeeze the eccentric shaft 16 and the movable frame 20, the eccentric shaft 16 will squeeze the second round tube 13, causing it to push the first round tube 12 and the extrusion plate 10 through the elastic force of the first spring 14. When the extrusion plate 10 moves downward, it will drive the round shaft 9 through the second slide groove 11 and pull the connecting piece 7 downward. At this time, the connecting piece 7 will pull the limiting piece 6 and drive the rotating piece 5 to rotate along the top of the fixed piece 4, so that the outer surface of the rolling rotor 15 can be squeezed through the limiting piece 6. Therefore, the rolling rotor 15 can be automatically positioned, which facilitates the assembly of the eccentric shaft 16 and the rolling rotor 15.

[0028] like Figure 1 , 2 As shown in Figure 5, the eccentric shaft 16 is sleeved on the inner side of the movable frame 20, and the rolling rotor 15 is sleeved on the outer surface of the second round tube 13. When the hydraulic cylinder 3 presses the eccentric shaft 16, the eccentric shaft 16 and the rolling rotor 15 are sleeved together, and the eccentric shaft 16 and the rolling rotor 15 are interference-fitted.

[0029] The cooperation between the rolling rotor 15 and the second round tube 13 facilitates the placement of the rolling rotor 15. At the same time, the cooperation between the eccentric shaft 16 and the second round tube 13 allows the second round tube 13 to be separated from the rolling rotor 15 when the eccentric shaft 16 presses against the second round tube 13. The limiting member 6 automatically positions the outer side of the rolling rotor 15. Meanwhile, the inner wall of the movable frame 20 and the second round tube 13 are positioned in accordance with each other, allowing the eccentric shaft 16 and the rolling rotor 15 to be accurately positioned.

[0030] like Figure 2As shown, the second spring 19 is elastically supported between the groove 17 and the movable frame 20. There are two sets of the second spring 19, and the two sets of the second spring 19 are located on both sides of the movable frame 20 respectively.

[0031] The design of the second spring 19 enables the movable frame 20 to have good elastic reset performance. Since the second spring 19 is in a compressed state, it will reset the movable frame 20. Furthermore, through the cooperation between the movable frame 20 and the fixed rod 18, the movable frame 20 can be separated from the eccentric shaft 16, making it easier to place the eccentric shaft 16 between the movable frame 20 and the second round tube 13.

[0032] like Figure 3 , 4 As shown, the circular shaft 9 is slidably connected to the second slide groove 11, and the connecting piece 7 passes through the first slide groove 8 and is slidably connected to the first slide groove 8.

[0033] Through the cooperation between the round shaft 9 and the second slide groove 11, the round shaft 9 will be squeezed by the second slide groove 11 when the extrusion plate 10 moves, so that the bottom end of the limiting member 6 can be squeezed by the connecting member 7, so that it is squeezed against the outer surface of the rolling rotor 15.

[0034] like Figure 2 , 3 As shown, the top of the limiting member 6 is arc-shaped, and rubber is bonded to the top of the limiting member 6. The limiting member 6 is in extrusion contact with the outer surface of the rolling rotor 15.

[0035] By cooperating with the limiting member 6 and the rolling rotor 15, multiple points on the outer periphery of the rolling rotor 15 can be squeezed by several sets of limiting members 6, so that the rolling rotor 15 can be kept in a central position and correspond to the position of the eccentric shaft 16, thereby improving its assembly accuracy.

[0036] like Figure 2 As shown, the bottom end of the eccentric shaft 16 is in contact with the second round tube 13 by compression, and the first spring 14 is elastically supported between the first round tube 12 and the second round tube 13.

[0037] The elastic force of the first spring 14 can support the second round tube 13 and the first round tube 12. When the second round tube 13 compresses the first spring 14, it can drive the extrusion plate 10 to move in opposite directions. At the same time, through the cooperation between the first round tube 12 and the second round tube 13, it can prevent excessive extrusion, provide compensation space, and prevent motion interference.

[0038] Working principle:

[0039] First, the rolling rotor 15 is mounted on the outer surface of the second round tube 13, and the top end of the eccentric shaft 16 is mounted on the inner side of the movable frame 20. Then, the hydraulic cylinder 3 is controlled to run and squeeze the eccentric shaft 16. At this time, the eccentric shaft 16 will be embedded in the inner side of the rolling rotor 15 and squeeze the top of the second round tube 13, so that the first round tube 12 and the extrusion plate 10 will be pushed downward by the elastic force of the first spring 14. Thus, the extrusion plate 10 drives the second slide groove 11 and the round shaft 9 and pulls the connecting piece 7 downward. At this time, the connecting piece 7 will pull the limiting piece 6 and drive the rotating piece 5 to rotate along the top of the fixed piece 4. Thus, the outer surface of the rolling rotor 15 can be squeezed by the limiting piece 6 to automatically position the rolling rotor 15, which facilitates the assembly of the eccentric shaft 16 and the rolling rotor 15.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision fixing assembly device for the internal structure of a compressor rotor, comprising a machining table (1), a rolling rotor (15), and an eccentric shaft (16), characterized in that, Also includes: An automatic positioning assembly structure is set on a processing table (1) for automatic positioning during the assembly of the rolling rotor (15) and the eccentric shaft (16); The automatic positioning assembly structure includes a fixed frame (2), which is installed on one side of the processing table (1). A hydraulic cylinder (3) is installed on the top of the fixed frame (2). Several sets of fixing parts (4) are installed on the top of the processing table (1). A rotating part (5) is hinged to the inner side of the fixing part (4) by a torsion spring. A limiting part (6) is connected to the top of the rotating part (5). A connecting part (7) is hinged to the bottom end of the limiting part (6). Several sets of first sliding grooves (8) are opened on the top of the processing table (1). A round shaft (9) is fixed to the bottom end of the first sliding groove (8). The bottom of the first chute (8) is provided with an extrusion plate (10), and the outer side of the extrusion plate (10) is provided with a second chute (11). The top of the extrusion plate (10) is provided with a first round tube (12), and the top of the first round tube (12) is provided with a second round tube (13). A first spring (14) is provided between the first round tube (12) and the second round tube (13). A groove (17) is provided on one side of the fixing frame (2), and a fixing rod (18) is installed inside the groove (17). A second spring (19) and a movable frame (20) are provided on the outer surface of the fixing rod (18).

2. The precision fixing assembly device inside a compressor rotor according to claim 1, characterized in that: The eccentric shaft (16) is sleeved on the inner side of the movable frame (20), and the rolling rotor (15) is sleeved on the outer surface of the second round tube (13).

3. The precision fixing assembly device inside a compressor rotor according to claim 2, characterized in that: When the hydraulic cylinder (3) presses the eccentric shaft (16), the eccentric shaft (16) is sleeved with the rolling rotor (15), and the eccentric shaft (16) and the rolling rotor (15) are interference fit.

4. The precision fixing assembly device inside a compressor rotor according to claim 1, characterized in that: The second spring (19) is elastically supported between the groove (17) and the movable frame (20). There are two sets of the second spring (19), and the two sets of second spring (19) are located on both sides of the movable frame (20).

5. The precision fixing assembly device inside a compressor rotor according to claim 1, characterized in that: The circular shaft (9) is slidably connected to the second slide groove (11), and the connecting piece (7) passes through the first slide groove (8) and is slidably connected to the first slide groove (8).

6. The precision fixing assembly device inside a compressor rotor according to claim 1, characterized in that: The top end of the limiting member (6) is arc-shaped, and rubber is adhered to the top end of the limiting member (6). The limiting member (6) is in extrusion contact with the outer surface of the rolling rotor (15).

7. The precision fixing assembly device inside a compressor rotor according to claim 1, characterized in that: The bottom end of the eccentric shaft (16) is in contact with the second circular tube (13) by compression.

8. The precision fixing assembly device inside a compressor rotor according to claim 7, characterized in that: The first spring (14) is elastically supported between the first round tube (12) and the second round tube (13).

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