Tool for preassembling rear bearing of rotary vane compressor

Abstract

The utility model relates to the technical field of compressor assembly, in particular to a rotary vane compressor pre-assembling rear bearing tool which comprises a bottom plate, a pre-assembling measuring table and a positioning block, and the pre-assembling measuring table and the positioning block are assembled on the bottom plate. The pre-assembly testing table is vertically arranged on the bottom plate and comprises a base body, a first shaft body and a second shaft body which are connected with one another in the axial direction, the base body is provided with an assembly surface for bearing a cylinder body, the shaft diameter of the first shaft body is matched with the short shaft distance of a cylinder body assembly hole, and the rear bearing is assembled on the other end face, deviating from the assembly surface, of the cylinder body; the shaft diameter of the second shaft body is matched with the hole diameter of an assembly hole of the rear bearing; the outer axial surface of the base body is concave inwards to form a positioning groove, the positioning block is movably arranged in the horizontal direction, and one end of the positioning block is clamped in the positioning groove; the horizontal position of the positioning block is adjusted through the matching relation between the positioning block and the positioning groove in the pre-assembling testing table, the pre-assembling testing table and the cylinder body on the pre-assembling testing table are driven to deflect by a small angle, the coaxiality fine adjustment effect between the cylinder body and the rear bearing is rapidly achieved, the adjusting time is shortened, and the assembling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor assembly technology, and in particular to a pre-assembled bearing fixture for a rotary vane compressor. Background Technology

[0002] The automotive air conditioning compressor is the heart of the automotive air conditioning refrigeration system, playing the role of compressing and transporting refrigerant. Pre-assembling the rear bearing is a key step in compressor assembly. Its main purpose is to pre-assemble the rear bearing onto the cylinder block or rotor assembly, laying the foundation for subsequent assembly processes and ensuring that the rotating parts of the compressor can operate stably and smoothly.

[0003] During assembly, the assembly accuracy between the cylinder block and the rear bearing needs to be considered, such as the coaxiality of the bearing housing and the cylinder block. If the coaxiality deviation is too large, it will lead to uneven force on the bearing after installation, which will affect the overall stability of the compressor. In related technologies, additional measuring tools are usually used for inspection. Fine adjustments are made after the error exceeds the allowable range, and this process is repeated multiple times to achieve the coaxiality requirement. The above process is cumbersome, requires repeated confirmation, and the fine adjustment process relies on experienced technicians. The assembly efficiency is low, and it is difficult to ensure the uniformity of the products. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pre-assembled bearing fixture for a rotary vane compressor, so as to achieve precise adjustment of assembly coaxiality and improve assembly accuracy and efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a pre-assembled bearing fixture for a rotary vane compressor, comprising: a base plate and a pre-assembled measuring platform and positioning block assembled on the base plate;

[0006] The pre-assembled test platform is vertically mounted on the base plate and includes a base, a first shaft, and a second shaft connected to each other along the axial direction. The base has an assembly surface for receiving the cylinder body. The shaft diameter of the first shaft matches the short shaft distance of the cylinder body assembly hole. The rear bearing is assembled on the other end face of the cylinder body away from the assembly surface, and the shaft diameter of the second shaft matches the assembly hole diameter of the rear bearing.

[0007] The outer axial surface of the substrate is recessed to form a positioning groove, and the positioning block is movably arranged along the horizontal direction, with one end locked in the positioning groove.

[0008] Furthermore, a support plate is mounted on the side of the base plate facing the pre-installed testing platform, and multiple support columns are symmetrically distributed on the support plate. The pre-installed testing platform is mounted on top of the multiple support columns, and the base is fixedly connected to each of the support columns.

[0009] Furthermore, the support plate has a U-shaped cross-section, and four support columns are provided, symmetrically distributed at equal intervals on both sides of the U-shaped opening of the support plate.

[0010] Furthermore, the two corners of the base plate facing the positioning block form a stepped portion with a height difference with the top surface of the base plate, and an extension platform for receiving the positioning block is formed between the two stepped portions.

[0011] Furthermore, a first mounting seat and a second mounting seat are respectively provided in the two stepped portions. The first mounting seat and the second mounting seat are arranged opposite to each other. A threaded rod is rotatably mounted on the first mounting seat and the second mounting seat at both ends. A threaded block is screwed onto the threaded rod. A first fixing block is connected to the bottom of the positioning block. The first fixing block is fixedly connected to the top of the threaded block.

[0012] Furthermore, the connection end of the threaded rod to the second mounting base extends to the other side of the second mounting base, and a handwheel is fixedly connected to the extension end of the threaded rod.

[0013] Furthermore, the first fixing block has an adjustment groove on the side facing the positioning block, and the end of the positioning block opposite to the positioning groove is engaged in the adjustment groove and fixedly connected to the first fixing block.

[0014] Furthermore, the extension platform is also provided with a second fixing block, a guide rail and a slider. The second fixing block is located on the side of the threaded rod facing the pre-installed test platform. The guide rail is fixedly located on the top of the second fixing block and its length direction is set along the moving direction of the positioning block. One side of the slider is slidably connected to the guide rail, and the other side is fixedly connected to the bottom of the first fixing block.

[0015] Furthermore, the pre-installed test platform is provided with a set of clamping components on both sides along the moving direction of the positioning block. Each clamping component includes a third fixing block, a clamping drive, a swing arm, and a pressure block. The clamping drive is vertically fixed to the base plate through the third fixing block. The swing arm is horizontally arranged, with one end fixedly connected to the execution end of the clamping drive. The pressure block is fixedly arranged at the other end of the swing arm and is arranged opposite to the end face of the rear bearing away from the cylinder body.

[0016] Furthermore, both the third fixing block and the base plate are provided with corresponding positioning holes, and positioning shafts are provided in the two positioning holes.

[0017] The beneficial effects of this utility model are as follows: By adjusting the horizontal position of the positioning block and the positioning groove on the pre-assembly test platform, the pre-assembly test platform and the cylinder on it can be driven to undergo a slight angular deflection, thus quickly achieving the coaxiality fine-tuning effect between the cylinder and the rear bearing. This simplifies the operation process, eliminates the need for complex testing tools and repeated confirmations, greatly shortens the assembly time, improves the production efficiency of compressor assembly, effectively avoids the problem of uneven bearing force caused by excessive coaxiality deviation, ensures the stability and smooth operation of the compressor's rotating parts, and guarantees the overall performance and reliability of the compressor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pre-assembled bearing fixture of the rotary vane compressor in this embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the pre-installed testing platform in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the base plate in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning block movement drive in an embodiment of the present invention;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic diagram of the operation of the two sets of clamping components in an embodiment of this utility model;

[0024] Figure 7 This is a schematic diagram of the clamping assembly in an embodiment of the present invention.

[0025] Reference numerals: 01, cylinder block; 02, rear bearing; 1, base plate; 1a, step; 1b, extension platform; 2, pre-assembly test platform; 21, base; 21a, positioning groove; 22, first shaft; 23, second shaft; 3, positioning block; 4, support plate; 5, support column; 6, first mounting seat; 7, second mounting seat; 8, threaded rod; 9, threaded block; 10, first fixing block; 10a, adjusting groove; 11, handwheel; 12, second fixing block; 13, guide rail; 14, slider; 15, third fixing block; 15a, positioning hole; 16, clamping drive component; 17, swing arm; 18, pressure block. Detailed Implementation

[0026] 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.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] like Figures 1 to 7 The pre-assembled bearing fixture for the rotary vane compressor shown includes: a base plate 1 and a pre-assembled measuring platform 2 and a positioning block 3 mounted on the base plate 1;

[0029] The pre-assembled test platform 2 is vertically set on the base plate 1 and includes a base 21, a first shaft 22 and a second shaft 23 connected to each other along the axial direction. The base 21 has an assembly surface for receiving the cylinder 01. The shaft diameter of the first shaft 22 matches the short shaft distance of the assembly hole of the cylinder 01. The rear bearing 02 is assembled on the other end face of the cylinder 01 away from the assembly surface, and the shaft diameter of the second shaft 23 matches the assembly hole diameter of the rear bearing 02.

[0030] The outer axial surface of the base 21 is recessed to form a positioning groove 21a, and the positioning block 3 is movably set along the horizontal direction, with one end locked in the positioning groove 21a.

[0031] This invention utilizes the cooperation between the positioning block 3 and the positioning groove 21a on the pre-assembly test platform 2. By adjusting the horizontal position of the positioning block 3, the pre-assembly test platform 2 and the cylinder 01 on it can be driven to undergo a slight angular deflection, thus quickly achieving a fine-tuning effect on the coaxiality between the cylinder 01 and the rear bearing 02. This simplifies the operation process, eliminates the need for complex testing tools and repeated confirmations, greatly shortens the assembly time, improves the production efficiency of compressor assembly, effectively avoids the problem of uneven bearing force caused by excessive coaxiality deviation, ensures the stability and smooth operation of the compressor's rotating parts, and guarantees the overall performance and reliability of the compressor.

[0032] Specifically, the base plate 1 serves as the fundamental support component of the entire tooling, providing a stable support platform for the pre-assembly test platform 2, the positioning block 3, and the cylinder 01 and rear bearing 02 during assembly, ensuring the overall stability and rigidity of the tooling. The pre-assembly test platform 2 is vertically mounted on the base plate 1, and the assembly surface of its base 21 is used to support the cylinder 01, providing initial positioning support for the cylinder 01 and ensuring the basic stability of the cylinder 01's posture during assembly. The positioning groove 21a, which is recessed in the outer shaft surface of the base 21, allows the end of the positioning block 3 to be accurately engaged within it. By changing the horizontal position of the positioning block 3, a rotational force is applied to the cylinder 01, causing a fine adjustment of the positions of the cylinder 01 and the rear bearing 02 on the pre-assembly test platform 2, thus precisely changing the relative positional relationship between them. The first shaft 22 and the second shaft 23 are respectively matched with the short shaft distance of the assembly hole of the cylinder 01 and the diameter of the assembly hole of the rear bearing 02, which are used to guide the assembly of the cylinder 01 and the rear bearing 02, so that they can be accurately fitted onto the pre-assembly test platform 2, forming a preliminary assembly relationship, and providing a basis for subsequent coaxiality fine adjustment.

[0033] Based on the above embodiment, a support plate 4 is assembled on the side of the base plate 1 facing the pre-assembly test platform 2. Multiple support columns 5 are symmetrically distributed on the support plate 4. The pre-assembly test platform 2 is mounted on the top of the multiple support columns 5, and the base 21 is fixedly connected to each support column 5. The support plate 4 and the support columns 5 serve to connect the base plate 1 and the pre-assembly test platform 2, provide an installation foundation for the pre-assembly test platform 2, and raise the pre-assembly test platform 2 so that the positioning groove 21a and the positioning block 3 are on the same horizontal plane. The symmetrically distributed support columns 5 can ensure that the pre-assembly test platform 2 is subjected to uniform force in the horizontal direction, reduce the tilting or deformation of the pre-assembly test platform 2 caused by uneven force distribution, and thus ensure the stability and accuracy of the assembly process.

[0034] Based on the above embodiments, the support plate 4 has a U-shaped cross section, and four support columns 5 are provided, which are symmetrically distributed at equal intervals on both sides of the U-shaped opening of the support plate 4. The four support columns 5 are symmetrically distributed at equal intervals on both sides of the U-shaped opening of the support plate 4, so that the pre-installed test platform 2 is subjected to uniform force, avoiding excessive local force, and can be adapted to install different pre-installed test platforms 2 according to cylinder bodies 01 of different sizes. In addition, the U-shaped support plate 4 provides installation of support columns 5, while greatly reducing the overall weight and space occupied.

[0035] Based on the above embodiment, the two corners of the base plate 1 facing the positioning block 3 form a stepped portion 1a with a height difference with the top surface of the base plate 1, and an extension platform 1b for receiving the positioning block 3 is formed between the two stepped portions 1a; a first mounting seat 6 and a second mounting seat 7 are respectively provided in the two stepped portions 1a, and the first mounting seat 6 and the second mounting seat 7 are arranged opposite to each other. The two ends of a threaded rod 8 are respectively rotatably mounted on the first mounting seat 6 and the second mounting seat 7, and a threaded block 9 is screwed onto the threaded rod 8. A first fixing block 10 is connected to the bottom of the positioning block 3, and the first fixing block 10 is fixedly connected to the top of the threaded block 9; the two stepped portions 1a provide an assembly position for the first mounting seat 6 and the second mounting seat 7, and the step structure determines the mounting position. To ensure accurate positioning, the extension platform 1b provides installation space for the positioning block 3 and the horizontal movement drive structure. The first mounting seat 6 and the second mounting seat 7 are set in the two stepped parts 1a, with their relative positions fixed, providing stable support and installation foundation for the threaded rod 8. This ensures that the threaded rod 8 maintains axial stability during rotation, preventing bending or shaking, thereby guaranteeing the straightness and accuracy of the positioning block 3's movement. By rotating the threaded rod 8, the rotational motion is converted into the linear motion of the threaded block 9 using the principle of thread transmission. The threaded block 9 is fixedly connected to the first fixed block 10, thereby driving the positioning block 3 to move synchronously in the horizontal direction, realizing the adjustment of the coaxiality of the cylinder body 01 assembly.

[0036] Based on the above embodiment, the connection end of the threaded rod 8 and the second mounting base 7 extends to the other side of the second mounting base 7, and a handwheel 11 is fixedly connected to the extension end of the threaded rod 8; the handwheel 11 serves as an operating component for rotating the threaded rod 8, making it convenient for the assembly personnel to apply rotational force. The end of the threaded rod 8 is connected to the handwheel 11, transmitting the rotational motion of the handwheel 11 to the threaded rod 8, thereby driving the threaded block 9 and the positioning block 3 to move.

[0037] Based on the above embodiment, the first fixing block 10 has an adjustment groove 10a on the side facing the positioning block 3. The end of the positioning block 3 away from the positioning groove 21a is engaged in the adjustment groove 10a and fixedly connected to the first fixing block 10. The design of the adjustment groove 10a allows the positioning block 3 to be more stably installed on the first fixing block 10, preventing the positioning block 3 from loosening, tilting or shifting during the adjustment process, thereby improving the stability and accuracy of the assembly. Moreover, by adjusting the assembly position relationship between the positioning block 3 and the adjustment groove 10a, the position of the other end of the positioning block 3 extending into the positioning groove 21a can be changed, thereby changing the adjustment accuracy of the coaxiality, which is highly adaptable.

[0038] Based on the above embodiment, the extension platform 1b is further provided with a second fixing block 12, a guide rail 13, and a slider 14. The second fixing block 12 is located on the side of the threaded rod 8 facing the pre-installed test platform 2. The guide rail 13 is fixedly located on the top of the second fixing block 12, and its length direction is set along the moving direction of the positioning block 3. One side of the slider 14 is slidably connected to the guide rail 13, and the other side is fixedly connected to the bottom of the first fixing block 10. The second fixing block 12 provides a stable support base for the guide rail 13, ensuring that the position of the guide rail 13 is fixed and the installation is stable. The guide rail 13 provides a track for the linear motion of the slider 14, ensuring that the slider 14 moves smoothly in a predetermined direction. The slider 14 transmits the linear motion of the guide rail 13 to the first fixing block 10 and the positioning block 3, so that the positioning block 3 remains stable and linear during the movement.

[0039] Based on the above embodiment, a set of clamping components is respectively provided on both sides of the pre-assembly test platform 2 along the moving direction of the positioning block 3. Each clamping component includes a third fixing block 15, a clamping drive component 16, a swing arm 17, and a pressure block 18. The clamping drive component 16 is vertically fixedly connected to the base plate 1 through the third fixing block 15. The swing arm 17 is horizontally arranged, with one end fixedly connected to the execution end of the clamping drive component 16. The pressure block 18 is fixedly arranged at the other end of the swing arm 17 and is arranged opposite to the end face of the rear bearing 02 that is away from the cylinder body 01. When the cylinder body 01 and the rear bearing 02 are assembled onto the pre-assembly test platform 2 for coaxiality adjustment, the rear bearing 02 can be steadily clamped from both sides by the clamping components on both sides, limiting the movement space of the top of the rear bearing 02, preventing the rear bearing 02 from shifting or shaking during the assembly and adjustment process, and ensuring that it is coaxial with the cylinder body 01. To improve assembly stability, the third fixing block 15 provides stable support for the clamping assembly, ensuring that the clamping assembly will not shift or shake during operation. The clamping drive 16 is the power source for the clamping assembly, and can typically be a cylinder, hydraulic cylinder, or electric push rod. The extension or retraction of the actuator of the clamping drive 16 drives the swing arm 17 to swing, thereby realizing the clamping or releasing action of the pressure block 18 on the rear bearing 02. The swing arm 17 converts the linear motion of the clamping drive 16 into the rotational swing motion of the pressure block 18, so that the pressure block 18 can accurately contact the end face of the rear bearing 02 and apply clamping force. The shape and size of the pressure block 18 are usually designed according to the shape of the rear bearing 02 to ensure that the rear bearing 02 can be clamped evenly and to prevent uneven clamping force from causing deformation or damage to the rear bearing 02.

[0040] Based on the above embodiment, the third fixing block 15 and the base plate 1 are respectively provided with positioning holes 15a, and positioning shafts are provided in the two positioning holes 15a. The positioning shafts are inserted into the positioning holes 15a on the third fixing block 15 and the base plate 1 to quickly position the clamping assembly on the base plate 1 when determining the assembly position of the clamping assembly, and to prevent the third fixing block 15 from shifting or shaking in the horizontal direction on the base plate 1, thereby enhancing the installation stability of the clamping assembly.

[0041] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-assembled rear bearing fixture for a rotary vane compressor, characterized in that, include: The base plate and the pre-installed measuring platform and positioning block assembled on the base plate; The pre-assembled test platform is vertically mounted on the base plate and includes a base, a first shaft, and a second shaft connected to each other along the axial direction. The base has an assembly surface for receiving the cylinder body. The shaft diameter of the first shaft matches the short shaft distance of the cylinder body assembly hole. The rear bearing is assembled on the other end face of the cylinder body away from the assembly surface, and the shaft diameter of the second shaft matches the assembly hole diameter of the rear bearing. The outer axial surface of the substrate is recessed to form a positioning groove, and the positioning block is movably arranged along the horizontal direction, with one end locked in the positioning groove.

2. The pre-assembled bearing fixture for the rotary vane compressor according to claim 1, characterized in that, A support plate is mounted on the side of the base plate facing the pre-installed testing platform. Multiple support columns are symmetrically distributed on the support plate. The pre-installed testing platform is mounted on top of the multiple support columns, and the base is fixedly connected to each of the support columns.

3. The pre-assembled bearing fixture for the rotary vane compressor according to claim 2, characterized in that, The support plate has a U-shaped cross-section, and four support columns are provided, which are symmetrically distributed at equal intervals on both sides of the U-shaped opening of the support plate.

4. The pre-assembled bearing fixture for the rotary vane compressor according to claim 1, characterized in that, The two corners of the base plate facing the positioning block and the top surface of the base plate form a stepped portion with a height difference, and an extension platform for receiving the positioning block is formed between the two stepped portions.

5. The pre-assembled bearing fixture for the rotary vane compressor according to claim 4, characterized in that, A first mounting seat and a second mounting seat are respectively provided in the two stepped portions. The first mounting seat and the second mounting seat are arranged opposite to each other. A threaded rod is rotatably mounted on the first mounting seat and the second mounting seat at both ends. A threaded block is screwed onto the threaded rod. A first fixing block is connected to the bottom of the positioning block. The first fixing block is fixedly connected to the top of the threaded block.

6. The pre-assembled rear bearing fixture for the rotary vane compressor according to claim 5, characterized in that, The threaded rod extends to the other side of the second mounting base at the connection end with the second mounting base, and a handwheel is fixedly connected to the extension end of the threaded rod.

7. The pre-assembled bearing fixture for the rotary vane compressor according to claim 5, characterized in that, The first fixing block has an adjustment groove on one side facing the positioning block, and the end of the positioning block opposite to the positioning groove is engaged in the adjustment groove and fixedly connected to the first fixing block.

8. The pre-assembled bearing fixture for a rotary vane compressor according to claim 5, characterized in that, The extension platform is also provided with a second fixing block, a guide rail and a slider. The second fixing block is located on the side of the threaded rod facing the pre-installed test platform. The guide rail is fixedly located on the top of the second fixing block and its length direction is set along the moving direction of the positioning block. One side of the slider is slidably connected to the guide rail, and the other side is fixedly connected to the bottom of the first fixing block.

9. The pre-assembled bearing fixture for a rotary vane compressor according to claim 1, characterized in that, The pre-installed test platform is provided with a set of clamping assemblies on both sides along the moving direction of the positioning block. Each clamping assembly includes a third fixing block, a clamping drive, a swing arm, and a pressure block. The clamping drive is vertically fixed to the base plate through the third fixing block. The swing arm is horizontally arranged, with one end fixedly connected to the execution end of the clamping drive. The pressure block is fixedly arranged at the other end of the swing arm and is arranged opposite to the end face of the rear bearing away from the cylinder body.

10. The pre-assembled rear bearing fixture for a rotary vane compressor according to claim 9, characterized in that, The third fixing block and the base plate are respectively provided with positioning holes, and positioning shafts are provided in the two positioning holes.

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