CN215521551U - Novel stator screw combination piece - Google Patents
Novel stator screw combination piece Download PDFInfo
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- CN215521551U CN215521551U CN202121745894.9U CN202121745894U CN215521551U CN 215521551 U CN215521551 U CN 215521551U CN 202121745894 U CN202121745894 U CN 202121745894U CN 215521551 U CN215521551 U CN 215521551U
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Abstract
The utility model discloses a novel stator screw assembly, which comprises a screw rod, wherein one end of the screw rod is connected with a polished rod, the polished rod is provided with a gasket in radial clearance fit, one or more matching structures are arranged on the surface, close to the screw rod, of the gasket, the matching structures are grooves, bulges or holes, the polished rod is connected with a cylinder structure, the radial size of the periphery of the cylinder structure is larger than the diameter of the polished rod, the hole diameters of the gasket are respectively smaller than the thread major diameter of the screw rod and the radial size of the periphery of the cylinder structure, and a fastening structure is arranged on the cylinder structure.
Description
Technical Field
The utility model belongs to the technical field of refrigeration compressors, and particularly relates to a novel stator screw assembly.
Background
The existing refrigeration compressor mainly provides power through a motor, the motor is divided into a stator part and a rotor part, and the stator part is mainly fixed on a pump body of the compressor through stator screws. Most stator screws on the market at present adopt outer hexagonal washer fixed or inner hexagonal stator screws, and the pressing surface of two kinds of stator screws and the area of contact of motor stator have two kinds of states, and an area of contact is big, and an area of contact is little. There is certain air gap in the stator and the rotor of motor when the assembly, the air gap can directly influence the efficiency of motor, the air gap is improper can cause motor inefficiency, cause the motor not to start and block die even, when stator and rotor air gap have been adjusted, during the pretension of stator screw, stator screw clamping face and stator face direct cooperation, stator screw clamping face can take place relative friction with the stator face, cause and take place relative movement between stator and rotor, the air gap of motor is directly influenced, play the fastening effect behind the screw compression stator.
China (CN202020222448.9) discloses a stator screw pre-installation structure assembled with a spring bushing, which comprises a stator screw body, wherein the stator screw body comprises a connecting rod and a matching part matched with the spring bushing, a pre-installation step is arranged on the matching part, and the diameter of the outer circle of the pre-installation step is smaller than that of the matching part. The utility model provides a stator screw pre-installation structure assembled with a spring bushing, which can effectively prevent the spring bushing from rotating, thereby effectively improving the assembly through rate of the spring bushing and improving the assembly efficiency of a compressor.
The defects of the prior art are as follows: 1. after the air gap of the motor is adjusted, when the motor is pre-tightened, a screw pressing surface is contacted with a stator surface, and relative friction is generated between the screw pressing surface and the stator surface when the screw is rotated, so that the friction force is large, relative movement is generated between a stator and a rotor, the air gap is influenced, the efficiency, the torque and the starting of the compressor are adversely affected, and even the compressor is not started; 2. the air gap of the motor is influenced, the air gap repairing difficulty is high, the coil inserting rate is increased, and the production efficiency is influenced.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a novel stator screw assembly which has small influence on an air gap of a motor and high assembly efficiency.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a novel stator screw assembly spare, includes the screw rod, the one end of screw rod is connected with the polished rod, be provided with radial clearance fit's packing ring on the polished rod, the packing ring is close to be provided with the cooperation structure of one or more department on the face of screw rod, the cooperation structure is recess or arch or hole, the polished rod is connected with the cylinder structure, the radial dimension of the periphery of cylinder structure is greater than the diameter of polished rod, the aperture of packing ring is less than respectively the screw thread major diameter of screw rod with the radial dimension of the periphery of cylinder structure, the structural fastening structure that is provided with of cylinder.
In the above scheme, a novel stator screw assembly comprises a screw rod, one end of the screw rod is connected with a polish rod, the polish rod is provided with a gasket in radial clearance fit, the polish rod is arranged because the whole screw thread of the rod part is not required to be processed, the effect can be improved and the cost can be reduced, the polish rod is provided with the gasket in radial clearance fit to improve the fastening effect and reduce the influence of the screw torque on a stator, one or more matching structures are arranged on the surface of the gasket close to the screw rod, the matching structures are grooves, bulges or holes, the fastening effect of the screw is improved by arranging one or more matching structures on the surface of the gasket close to the screw rod to prevent loosening, wherein the gasket is provided with a groove or bulge or hole structure (not limited in the form shown in the drawing, and the grooves and the bulges can be directions or positions imaginable by other ordinary technicians), the radial dimension of the periphery of cylinder structure is greater than the diameter of polished rod, the aperture of packing ring is less than respectively the big footpath of screw thread with the radial dimension of the periphery of cylinder structure, the structural fastening structure that is provided with of cylinder sets up cylinder structure diameter and is greater than the diameter of polished rod constitutes the application of force position of screw axial force, the aperture of packing ring is less than respectively the big footpath of screw thread with the radial dimension of the periphery of cylinder structure limits the axial displacement of packing ring, prevents to drop, constitutes screw gasket integrated configuration, the structural torque force part that receives that is provided with the fastening structure and constitutes the screw of cylinder.
In the scheme, the screw and the washer are in a non-fixed matching mode, the washer is firstly placed into the polished rod, a bolt to be processed is directly processed, the thread diameter is larger than the diameter of the washer, and the washer can move on the screw but cannot fall off.
Further, the mating structures are distributed symmetrically on the gasket or along an array.
The matching structures are symmetrically distributed on the gasket or distributed along the array, so that the fastening effect and stability can be improved, and the matching structures are uniformly distributed to enable the stress between the gasket and the stator to be uniform.
Further, the matching structure is a through groove or a through hole.
The matching structure is a through groove or a through hole, so that the contact friction force between the cylinder structure and the stator face relative to the gasket can be reduced.
Further, the fastening structure is a convex structure with an outer polygon shape or a concave structure with an inner polygon shape.
The fastening structure is an external polygonal convex structure or an internal polygonal concave structure which can be matched with a wrench to transmit torque.
Furthermore, fillets or chamfers are arranged at the end part of the screw rod, the end face of the cylinder structure and the end face of the fastening structure.
The end part of the screw rod, the end surface of the cylinder structure and the end surface of the fastening structure are provided with fillets or chamfers, so that bolts can be conveniently installed and positioned.
Further, the cylinder structure is a cylinder or a regular polygon cylinder.
The cylinder structure is cylinder or regular polygon cylinder and conveniently processes, and the structure is even so that the atress is even.
Further, the gasket is multiple.
The influence of bolt torque on the stator is further reduced by arranging a plurality of washers, so that the influence on the air gap of the motor is reduced.
Further, the length of the screw and the length of the light rod have a ratio ranging from 1/8 to 1.
The proportion setting can ensure the effective length of the thread and simultaneously ensure the whole length of the screw to meet the requirement.
Compared with the prior art, the utility model has the beneficial effects that:
(1) when the compressor is used, the gasket is in contact with the surface of the stator, the gasket plays a role in buffering between the stator and the screw, the influence of the torque of the screw on the stator is reduced, when the gasket and the screw are not fixed together, the friction force between the screw and the stator is smaller than the friction force between the fixed type of the gasket and the surface of the stator, when the torque is increased, the stator screw rotates, the gasket does not rotate, the gasket provides static pressure for the stator, the stator is not easy to move, the air gap retention degree is good, the air gap offline rate is reduced, and the efficiency, the torque and the starting performance of the compressor are ensured;
(2) the stator screw assembly adopts an anti-drop combined type, the inner diameter of the washer is smaller than the major diameter of the thread, the washer can be moved but not dropped after being processed, pre-assembled and integrally threaded, the use is convenient, production and additional assembly are not needed, and the assembly efficiency is improved;
(3) the gasket increases recess or protruding or hole design, and after the pretension, recess or protruding or hole and stator screw face form non-planar cooperation, and the relative packing ring of stator face compresses tightly the face protrudingly or cavedly, plays the effect that prevents not hard up when the transportation or receive the impact, and the reliability is high, prevents that the air gap change from arousing not starting, card scheduling problem extremely.
Drawings
FIG. 1 is a schematic perspective view of a novel stator screw assembly according to the present invention;
FIG. 2 is a bottom view of a novel stator screw assembly of the present invention;
FIG. 3 is a schematic view of the construction of the gasket of the present invention;
FIG. 4 is a schematic view showing the structure of a gasket in embodiment 2 of the present invention;
FIG. 5 is a schematic view showing the structure of a gasket in embodiment 3 of the present invention;
FIG. 6 is a schematic structural view of a gasket in embodiment 4 of the present invention;
in the figure: 1. a screw; 2. a polish rod; 3. a cylindrical structure; 4. a fastening structure; 5. a gasket; 6. and (5) a matching structure.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-3, a novel stator screw assembly, includes screw rod 1, screw rod 1's one end is connected with polished rod 2, be provided with radial clearance fit's packing ring 5 on polished rod 2, packing ring 5 is close to be provided with the cooperation structure 6 of one or more department on screw rod 1's the face, cooperation structure 6 is recess or arch or hole, polished rod 2 is connected with cylinder structure 3, and cylinder structure 3 is the cylinder type (also can be the polygon cylinder), the diameter of cylinder structure 3 is greater than the diameter of polished rod 2, the aperture of packing ring 5 is less than respectively the screw thread major diameter of screw rod 1 with the diameter of cylinder structure 3, be provided with fastening structure 4 on the cylinder structure 3.
In the above scheme, a novel stator screw assembly comprises a screw rod 1, one end of the screw rod 1 is connected with a polish rod 2, the polish rod 2 is provided with a gasket 5 in radial clearance fit, the polish rod 2 is arranged because the whole screw thread of the rod part is not required to be processed, the effect can be improved and the cost can be reduced, the gasket 5 in radial clearance fit is arranged on the polish rod 2 to improve the fastening effect, meanwhile, the influence of the screw torque on the stator is reduced, the fastening effect of the screw is improved by arranging one or more matching structures 6 on the surface of the gasket 5 close to the screw rod 1, the looseness is prevented, wherein the gasket 5 is provided with a groove or bulge or a hole structure (not limited to the form shown in the figure, the groove or the bulge can be the direction or the position which can be thought by other ordinary technicians), the embodiment is provided with two symmetrical grooves or bulges, or four symmetrical grooves or bulges on the gasket 5, the screw rod 2 is connected with a cylinder structure 3, the diameter of the cylinder structure 3 is larger than that of the screw rod 2, the aperture of the gasket 5 is smaller than the thread major diameter of the screw rod 1 and the diameter of the cylinder structure 3 respectively, a fastening structure 4 is arranged on the cylinder structure 3, the diameter of the cylinder structure 3 is larger than that of the screw rod 2, so that a force application part of the screw axial force is formed, the aperture of the gasket 5 is smaller than the thread major diameter of the screw rod 1 and the diameter of the cylinder structure 3, the axial movement of the gasket 5 is limited, the gasket is prevented from falling off, a screw and gasket integrated structure is formed, and the fastening structure 4 is arranged on the cylinder structure 3 to form a torque force part of the screw.
In the scheme, the screw and the gasket 5 are in a non-fixed matching mode, the gasket 5 is firstly placed into the polished rod 2, a bolt to be processed is directly processed, then the thread is twisted, the diameter of the thread is larger than the diameter of the gasket 5, and the gasket 5 can move on the screw but does not fall off.
Further, the mating structures 6 are distributed symmetrically or along an array on the gasket 5.
The matching structures 6 are symmetrically distributed on the gasket 5 or distributed along an array, so that the fastening effect and stability can be improved, and the matching structures 6 are uniformly distributed, so that the stress between the gasket 5 and the stator is uniform.
Further, the fastening structure 4 is a convex structure with an outer polygon shape or a concave structure with an inner polygon shape.
The fastening structure 4 is a convex structure with an outer hexagon, and can also be an equivalent concave structure with an inner hexagon, and the concave structure can be matched with a wrench to transmit torque.
Furthermore, fillets or chamfers are arranged at the end part of the screw rod 1, the end surface of the cylinder structure 3 and the end surface of the fastening structure 4.
The end part of the screw rod 1, the end surface of the cylinder structure 3 and the end surface of the fastening structure 4 are provided with fillets or chamfers, so that bolts can be conveniently installed and positioned.
Further, the cylinder structure 3 is a cylinder or a regular polygon cylinder.
The cylinder structure 3 is a cylinder or a regular polygon cylinder, so that the processing is convenient, and the stress is uniform due to the uniform structure.
Further, the ratio of the length of the screw 1 to the length of the polish rod 2 ranges from 1/8 to 1.
The proportion setting can ensure the effective length of the screw rod 1 and simultaneously ensure the whole length of the screw to meet the requirement.
Example 2
As shown in fig. 4, the novel stator screw assembly of this embodiment is further optimized based on embodiment 1:
further, the matching structure 6 is a groove or a protrusion or a hole, and the matching structure 6 is a through groove or a through hole.
The matching structure 6 is a through groove or a through hole, so that the contact friction force between the cylinder structure 3 and the stator face relative to the gasket 5 can be reduced, and the matching structure 6 is a blind hole or a through hole arrayed along the circumferential direction and can also be a convex structure.
Example 3
As shown in fig. 5, the novel stator screw assembly of this embodiment is further optimized based on embodiment 1:
further, the matching structure 6 is a groove or a protrusion or a hole, and the matching structure 6 is a through groove.
The matching structures 6 are through grooves or through holes, so that the contact friction force between the cylinder structures 3 and the stator face relative to the gasket 5 can be reduced, and the matching structures 6 are arranged into blind grooves or through grooves or protruding structures arrayed along the circumferential direction.
Example 4
As shown in fig. 6, the novel stator screw assembly of this embodiment is further optimized based on embodiment 1:
further, the gasket 5 is plural.
The influence of the bolt torque on the stator is further reduced by providing 2-3 washers 5, thereby reducing the influence on the air gap of the machine, either as a plurality of identical washers 5 or by adding washers 5 without mating structures 6 on the upper side of the existing washers 5.
Further, the mating structures 6 are distributed symmetrically or along an array on the gasket 5.
The matching structure 6 is in the symmetrical distribution or along the array distribution can improve fastening effect and stability on the packing ring 5, and 6 evenly distributed of matching structure makes the atress between packing ring 5 and the stator even, and matching structure 6 is the round blind slot or logical groove or the protruding structure that sets up on packing ring 5.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a novel stator screw assembly spare, includes the screw rod, its characterized in that, the one end of screw rod is connected with the polished rod, be provided with radial clearance fit's packing ring on the polished rod, the packing ring is close to be provided with the cooperation structure of one or more department on the face of screw rod, the cooperation structure is recess or arch or hole, the polished rod is connected with the cylinder structure, the radial dimension of the periphery of cylinder structure is greater than the diameter of polished rod, the aperture of packing ring is less than respectively the screw thread major diameter of screw rod with the radial dimension of the periphery of cylinder structure, the structural fastening structure that is provided with of cylinder.
2. The novel stator screw assembly of claim 1, wherein said mating structures are distributed symmetrically or along an array on said washer.
3. The novel stator screw assembly of claim 1, wherein the mating structure is a through slot or a through hole.
4. The novel stator screw assembly of claim 1, wherein the fastening structure is an outer polygonal convex structure or an inner polygonal concave structure.
5. The novel stator screw assembly as claimed in claim 1, wherein the end of the threaded rod, the end face of the cylindrical structure, and the end face of the fastening structure are provided with a fillet or chamfer.
6. The novel stator screw assembly of claim 1 wherein said cylindrical structure is a cylinder or a regular polygonal cylinder.
7. The novel stator screw assembly of claim 1 wherein said washer is plural.
8. The novel stator screw assembly as claimed in claim 1 wherein the ratio of the length of the screw to the length of the light bar ranges from 1/8 to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745894.9U CN215521551U (en) | 2021-07-29 | 2021-07-29 | Novel stator screw combination piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745894.9U CN215521551U (en) | 2021-07-29 | 2021-07-29 | Novel stator screw combination piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215521551U true CN215521551U (en) | 2022-01-14 |
Family
ID=79788114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121745894.9U Active CN215521551U (en) | 2021-07-29 | 2021-07-29 | Novel stator screw combination piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215521551U (en) |
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2021
- 2021-07-29 CN CN202121745894.9U patent/CN215521551U/en active Active
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