Disassembling and assembling device for composite bearing of refrigeration compressor
By designing a disassembly and assembly device for the bracket and pulling components of the refrigeration compressor, the problem of time and space limitations of composite bearings is solved, and a convenient and efficient disassembly and assembly process is achieved, reducing maintenance costs.
Patent Information
- Application Number
- CN202422429945.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The disassembly and assembly process of the existing refrigeration compressor composite bearings takes a long time and cumbersome, requiring multiple people to cooperate, and is limited by the operating space and location, resulting in high maintenance costs and long cycles, and serious losses from users to shut down work.
A disassembly and assembly device including a bracket, a support assembly and a pulling assembly is designed. The bracket is fixed to the housing flange. The pulling assembly realizes the spindle pulling out through the connecting head, a pull rod and a drive member. The support assembly supports the spindle tail end on the motor housing, simplifying the disassembly and assembly process.
It reduces the disassembly and assembly and maintenance cycle of composite bearings, improves the convenience and efficiency of operation, is not limited by operating space, and reduces the maintenance cost.
Smart Images
Figure CN223198973U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearing disassembly, and in particular relates to a disassembly and assembly device for composite bearings of refrigeration compressors. Background Art
[0002] The centrifugal variable-frequency direct-drive chiller compressor has been structurally optimized and improved based on the original centrifugal refrigeration compressor. Driven by a motor and speed increaser, it is now directly driven by a permanent magnet variable-frequency motor. This product primarily consists of an adjustment mechanism, a volute, a stage partition, a rotor assembly, and a permanent magnet variable-frequency motor stator. Bearings are vulnerable parts and require regular maintenance, inspection, or replacement. Composite bearings are the most difficult to maintain. During assembly, they are first installed on the shaft and then integrated with the shaft. Existing disassembly and assembly methods require manual disassembly of components using a sling, semi-automatic tightening tools, and other auxiliary tools. The disassembly sequence is: piping - adjustment mechanism - first-stage impeller - stage partition - second-stage impeller - motor rear end cover - radial bearing - motor stator - composite bearing and shaft. The above disassembly and assembly methods are time-consuming and cumbersome. Repairing and repairing bearings requires disassembling almost all parts of the compressor, which requires the cooperation of multiple people. In addition, most repairs and maintenance need to be carried out on-site, which is restricted by factors such as location, operating space, and lifting conditions. This results in problems such as lack of equipment and tools for on-site repairs, difficult repair operations, long cycles, high costs, and user downtime losses. Utility Model Content
[0003] The purpose of the utility model is to provide a disassembly and assembly device for a composite bearing of a refrigeration compressor, which can reduce the disassembly and assembly and maintenance cycle of the composite bearing of the compressor and has the advantages of being convenient, efficient and highly practical.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a disassembly and assembly device for a composite bearing of a refrigeration compressor, comprising a bracket, a support assembly and a pulling assembly, the bracket being fixed on the casing flange, the pulling assembly being installed on the bracket, and being used to pull the main shaft; the support assembly being installed on the side of the motor away from the casing flange, the support assembly being installed on the motor housing, and being used to support the tail end of the main shaft; the pulling assembly comprising a connecting head, a pull rod and a driving member, the two sides of the connecting head being respectively connected to the main shaft and the pull rod, and the driving member being used to drive the pull rod to move.
[0005] Furthermore, a guide sleeve is fixed on the bracket, and the connecting head is slidably connected in the guide sleeve.
[0006] Furthermore, a connecting hole is provided on the bracket, and the guide sleeve is set to a convex structure. The raised portion of the guide sleeve matches the connecting hole, and an external thread is provided on the side of the raised portion away from the connecting head. A locking nut is threadedly connected to the external thread, and the locking nut and the bottom of the guide sleeve are respectively located on both sides of the bracket; the pull rod can extend from the inside of the guide sleeve.
[0007] Furthermore, the driving member adopts a driving nut, the outside of the pull rod is provided with an external thread, the driving nut is threadedly connected to the pull rod, and the locking nut and the connecting head are respectively located on both sides of the bracket.
[0008] Furthermore, the support assembly includes a support rod and a motor replacement end cover, the motor replacement end cover is fixed on the motor housing, the motor replacement end cover is provided with a support hole opposite to the main shaft, the support rod can rotate and slide in the support hole, and one end of the support rod is fixed to the tail end of the main shaft.
[0009] Furthermore, a threaded column is provided at one end of the support rod, and the threaded column can be threadedly connected to the threaded hole at the tail end of the main shaft.
[0010] Furthermore, the bracket includes a top plate and two channel steels, the two channel steels are arranged in parallel, and a U-shaped structure is formed between the top plate and the two channel steels; the two channel steels are fixed between the top plate and the casing flange by two sets of fixing components.
[0011] Further, each group of the fixing components includes a foot plate, a first fixing part, a second fixing part, a third fixing part, a first limit block and a second limit block, the foot plate is provided with a first fixing hole and a second fixing hole, the first fixing hole and the second fixing hole both correspond to the third fixing hole in the circumferential direction of the casing flange; the first limit block is provided with a fourth fixing hole corresponding to the first fixing hole, and the first fixing part is used to connect the foot plate and the casing flange after passing through the second fixing hole and the third fixing hole; the second fixing part passes through the fourth fixing hole, the first fixing hole and the third fixing hole in sequence to connect the first limit block, the foot plate and the casing flange; the second limit block is provided with a fifth fixing hole, and the top plate is provided with a sixth fixing hole, and the third fixing part connects the top plate and the second limit block after passing through the fifth fixing hole and the sixth fixing hole; the two ends of the channel steel are respectively against the top plate and the foot plate, and the first limit block and the second limit block are located on the inner side of the channel steel and used to support the channel steel.
[0012] Furthermore, the sixth fixing hole is a bar-shaped hole.
[0013] The working principle of this technical solution is: remove the end cover of the motor, then install the motor replacement end cover on the motor housing, and then pass the support rod through the support hole of the motor replacement end cover and fix it to the tail end of the main shaft. Connect the main shaft to the connector, and fix the two foot plates to the casing flange through the first fixing member. Use the second fixing member to fix the first limit block, the foot plate and the casing flange. The two ends of the channel steel are supported by the first limit block and the second limit block and pressed tightly between the foot plate and the top plate. Rotate the drive nut. Since the connector is slidably connected in the guide sleeve, the pull rod moves horizontally under the drive of the locking nut. The pull rod pulls the main shaft through the connector to pull out the main shaft and the composite bearing. During the movement of the main shaft, the support rod will support the tail end of the main shaft.
[0014] The beneficial effect of this technical solution is that it is not limited by the operating space, and the device is simple. The main shaft and the composite bearing on the main shaft can be removed without disassembling all parts of the compressor, thereby reducing the disassembly and maintenance cycle of the compressor composite bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural schematic diagram of a disassembly and assembly device for a composite bearing of a refrigeration compressor according to the present invention;
[0016] Figure 2 This is a schematic diagram of the connection between the casing flange and the disassembly device. DETAILED DESCRIPTION
[0017] The following is further described in detail through specific implementation methods:
[0018] The figure marks in the drawings of the specification include: bracket 1, motor housing 2, housing flange 3, main shaft 4, connector 5, guide sleeve 6, pull rod 7, locking nut 8, drive nut 9, flat square 10, reinforcing rib 11, foot plate 12, first limit block 13, second fixing member 14, channel steel 15, top plate 16, second limit block 17, third fixing member 18, first fixing member 19, sixth fixing hole 20, motor replacement end cover 21, support rod 22, third fixing hole 23.
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] The embodiment is basically as shown in the attached Figure 1-2As shown: A disassembly and assembly device for a composite bearing of a refrigeration compressor, comprising a bracket 1, a supporting assembly and a pulling assembly. The bracket 1 is fixed on the casing flange 3. The bracket 1 comprises a top plate 16 and two channel steels 15. The top plate 16 is provided with a reinforcing rib 11. The two channel steels 15 are arranged in parallel, and a U-shaped structure is formed between the top plate 16 and the two channel steels 15. The two channel steels 15 are fixed between the top plate 16 and the casing flange 3 by two groups of fixing assemblies. Each group of fixing assemblies comprises a foot plate 12, a first fixing member 19, a second fixing member 14, a third fixing member 18, a first limiting block 13 and a second limiting block 17. The foot plate 12 is provided with a first fixing hole and a second fixing hole (in this embodiment, two groups of second fixing holes are provided). The first fixing hole and the second fixing hole both correspond to the third fixing hole 23 on the circumference of the casing flange 3. The two groups of second fixing holes are respectively located on both sides of the first fixing hole. The first stopper 13 is provided with a fourth fixing hole corresponding to the first fixing hole. The first fixing member 19 is used to connect the foot plate 12 to the housing flange 3 after passing through the second and third fixing holes 23. The second fixing member 14 is sequentially passed through the fourth fixing hole, the first fixing hole, and the third fixing hole 23 to connect the first stopper 13, the foot plate 12, and the housing flange 3. The second stopper 17 is provided with a fifth fixing hole, and the top plate 16 is provided with a sixth fixing hole 20 (specifically, a strip-shaped hole). The third fixing member 18 is passed through the fifth and sixth fixing holes 20 to connect the top plate 16 to the second stopper 17. The ends of the channel steel 15 respectively abut against the top plate 16 and the foot plate 12. The first and second stopper 13, 17 are located on the inner side of the channel steel 15 and serve to support the channel steel 15. The sixth fixing hole 20 is a strip-shaped hole that can be adjusted vertically to accommodate housing flanges 3 of different diameters by simply replacing the corresponding foot plate 12.
[0021] The pulling assembly is mounted on the top plate 16 and is used to pull the main shaft 4. The pulling assembly includes a connector 5, a pull rod 7 and a driving member. A guide sleeve 6 is fixed on the bracket 1, and the connector 5 is slidably connected in the guide sleeve 6. The two sides of the connector 5 are respectively connected to the main shaft 4 and the pull rod 7. One side of the connector 5 is welded to the pull rod 7, and the other side is set as a coupling structure, so that it is connected to the main shaft 4. A connecting hole is provided on the bracket 1, and the guide sleeve 6 is set as a convex structure. The raised portion of the guide sleeve 6 matches the connecting hole. The side of the raised portion away from the connector 5 is provided with an external thread, and a locking nut 8 is threadedly connected to the external thread. The locking nut 8 and the bottom of the guide sleeve 6 are respectively located on both sides of the top plate 16 and respectively abut against both sides of the top plate 16. The pull rod 7 can extend from the inside of the guide sleeve 6. The driving member is used to drive the pull rod 7 to move. The driving member adopts a driving nut 9. The outside of the pull rod 7 is provided with an external thread. The driving nut 9 is threadedly connected to the pull rod 7. The driving nut 9 is against the locking nut 8. A flat square 10 is provided on the side of the pull rod 7 away from the connector 5.
[0022] The support assembly is mounted on the side of the motor away from the housing flange 3. The support assembly is mounted on the motor housing 2 and is used to support the tail end of the spindle 4. The support assembly includes a support rod 22 and a motor replacement end cap 21. The motor replacement end cap 21 is fixed to the motor housing 2. Specifically, the motor replacement end cap 21 has threaded holes corresponding to the threaded holes in the motor housing 2, and is connected and fixed using bolts or screws. The motor replacement end cap 21 has a support hole directly opposite the spindle 4. The support rod 22 can rotate and slide within the support hole. One end of the support rod 22 is fixed to the tail end of the spindle 4. Specifically, one end of the support rod 22 has a threaded post that can be threaded into the threaded hole at the tail end of the spindle 4.
[0023] The specific implementation process is as follows:
[0024] Remove the end cover of the motor, then install the motor replacement end cover 21 on the motor housing 2, and then pass the support rod 22 through the support hole of the motor replacement end cover 21 and fix it to the tail end of the main shaft 4. Connect the main shaft 4 to the connector 5, and fix the two foot plates 12 to the casing flange 3 through the first fixing member 19 respectively. Use the second fixing member 14 to fix the first limit block 13, the foot plate 12 and the casing flange 3. The two ends of the channel steel 15 are supported by the first limit block 13 and the second limit block 17 and pressed tightly between the foot plate 12 and the top plate 16. Rotate the drive nut 9. Since the connector 5 is slidably connected in the guide sleeve 6, the pull rod 7 moves horizontally under the drive of the locking nut 8. The pull rod 7 pulls the main shaft 4 through the connector 5 to pull out the main shaft 4 and the composite bearing. During the movement of the main shaft 4, the support rod 22 will support the tail end of the main shaft 4.
[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0026] The above is only an embodiment of the present utility model. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A disassembly and assembly device for composite bearings of refrigeration compressors, characterized by: The invention comprises a bracket (1), a supporting assembly and a pulling assembly, wherein the bracket (1) is fixed on the casing flange (3), the pulling assembly is installed on the bracket (1) and is used to pull the main shaft (4); the supporting assembly is installed on the side of the motor away from the casing flange (3), the supporting assembly is installed on the motor housing (2), and is used to support the tail end of the main shaft (4); the pulling assembly comprises a connecting head (5), a pulling rod (7) and a driving member, the two sides of the connecting head (5) are respectively connected to the main shaft (4) and the pulling rod (7), and the driving member is used to drive the pulling rod (7) to move.
2. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 1, characterized in that: A guide sleeve (6) is fixed on the bracket (1), and the connector (5) is slidably connected in the guide sleeve (6).
3. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 2, characterized in that: The bracket (1) is provided with a connecting hole, the guide sleeve (6) is set as a convex structure, the raised portion of the guide sleeve (6) matches the connecting hole, the raised portion is provided with an external thread on the side away from the connecting head (5), and a locking nut (8) is threadedly connected to the external thread. The locking nut (8) and the bottom of the guide sleeve (6) are respectively located on both sides of the bracket (1); the pull rod (7) can be extended from the inside of the guide sleeve (6).
4. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 3, characterized in that: The driving member adopts a driving nut (9), the outside of the pull rod (7) is provided with an external thread, the driving nut (9) is threadedly connected to the pull rod (7), and the locking nut (8) and the connecting head (5) are respectively located on both sides of the bracket (1).
5. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 1, characterized in that: The support assembly comprises a support rod (22) and a motor replacement end cover (21), wherein the motor replacement end cover (21) is fixed to the motor housing (2), and a support hole directly opposite to the main shaft (4) is provided on the motor replacement end cover (21), and the support rod (22) can rotate and slide in the support hole, and one end of the support rod (22) is fixed to the tail end of the main shaft (4).
6. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 5, characterized in that: One end of the support rod (22) is provided with a threaded column, and the threaded column can be threadedly connected to the threaded hole at the rear end of the main shaft (4).
7. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 1, characterized in that: The bracket (1) comprises a top plate (16) and two channel steels (15), wherein the two channel steels (15) are arranged in parallel, and a U-shaped structure is formed between the top plate (16) and the two channel steels (15); the two channel steels (15) are fixed between the top plate (16) and the casing flange (3) by two sets of fixing components.
8. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 7, characterized in that: Each group of the fixing components comprises a foot plate (12), a first fixing member (19), a second fixing member (14), a third fixing member (18), a first limiting block (13) and a second limiting block (17); the foot plate (12) is provided with a first fixing hole and a second fixing hole, and the first fixing hole and the second fixing hole both correspond to the third fixing hole (23) on the circumference of the housing flange (3); the first limiting block (13) is provided with a fourth fixing hole corresponding to the first fixing hole; the first fixing member (19) is used to pass through the second fixing hole and the third fixing hole (23) to connect the foot plate (12) and the housing flange (3); the second fixing member (14) is passed through the second fixing hole and the third fixing hole (23) in sequence. After passing through the fourth fixing hole, the first fixing hole and the third fixing hole (23), the first limiting block (13), the foot plate (12) and the casing flange (3) are connected; the second limiting block (17) is provided with a fifth fixing hole, the top plate (16) is provided with a sixth fixing hole (20), and the third fixing member (18) passes through the fifth fixing hole and the sixth fixing hole (20) to connect the top plate (16) and the second limiting block (17); the two ends of the channel steel (15) are respectively against the top plate (16) and the foot plate (12), and the first limiting block (13) and the second limiting block (17) are located on the inner side of the channel steel (15) and are used to support the channel steel (15).
9. The disassembly and assembly device for composite bearings of refrigeration compressors according to claim 8, characterized in that: The sixth fixing hole (20) is a strip-shaped hole.