A swash plate support lubricating structure of a large displacement bi-directional swash plate type compressor for a truck

Abstract

The application discloses a swash plate supporting and lubricating structure of a large-displacement bidirectional swash plate type compressor for a truck, and belongs to the technical field of swash plate type compressors, which comprises a rotating shaft, a swash plate is fixedly connected to the middle of the rotating shaft, a plurality of lubricating mechanisms one are arranged on the two side surfaces of the swash plate, and lubricating mechanisms two are arranged around the annular surface of the swash plate, the lubricating mechanisms one are arranged on the two side surfaces of the swash plate, the lubricating mechanisms two are arranged around the annular surface of the swash plate, a multi-directional and full-coverage lubricating system is formed, the combination of liquid lubrication and solid lubrication is realized, the lubricating effect is excellent, the problem of insufficient lubrication of the swash plate of the large-displacement bidirectional swash plate type compressor is solved, the overall lubricating structure is integrated on the swash plate body, the volume and weight of the compressor need not be additionally increased, the original assembly relationship of the compressor is not changed, the upgrading and reconstruction of the existing products are facilitated, the manufacturing cost is low, and the practicality is high.

Description

Technical Field

[0001] This invention belongs to the technical field of swashplate compressors, specifically relating to a swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks. Background Technology

[0002] A swashplate compressor is a type of reciprocating compressor, specifically an axial reciprocating compressor, also known as a second-generation compressor. It gets its name from the fact that the reciprocating motion of the piston is driven by a swashplate fixed to the main shaft. Because the piston's reciprocating motion is parallel to the centerline of the drive shaft, it is also called an axial reciprocating compressor.

[0003] The existing truck-mounted large-displacement double-sided swashplate compressors have the following problems during use: the swashplate lacks an independent lubrication structure, resulting in poor support and lubrication of the swashplate. The lack of lubrication between the swashplate and the piston over a long period of time leads to severe wear and affects the gas compression effect.

[0004] In view of this, a swashplate support lubrication structure for a large-displacement bidirectional swashplate compressor for trucks is designed to solve the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a swashplate support lubrication structure for a large-displacement bidirectional swashplate compressor for trucks, which features a compact lubrication structure, multi-directional lubrication, and good lubrication effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a swashplate support and lubrication structure for a large displacement bidirectional swashplate compressor for trucks, comprising a rotating shaft, a swashplate fixedly connected to the middle of the rotating shaft, a plurality of lubrication mechanisms I provided on both sides of the swashplate, and a lubrication mechanism II provided around the annular surface of the swashplate.

[0007] Furthermore, the lubrication mechanism includes a liquid storage tank, with a liquid storage tank arranged around the surface of the swash plate, and sealing caps arranged on both sides of the liquid storage tank. A liquid guide groove is opened on the surface of the swash plate near the liquid storage tank, and a liquid outlet is arranged between the liquid guide groove and the liquid storage tank.

[0008] Furthermore, a liquid guiding rope is provided inside the liquid guiding tank, with one end of the liquid guiding rope closely attached to the liquid outlet of the storage tank.

[0009] Furthermore, a return spring is fixedly connected to the end of the liquid storage tank away from the liquid guiding tank, and a sealing plate is connected to the surface of the return spring.

[0010] Furthermore, the end of the sealing plate near the liquid guiding groove is designed with an arc surface structure, the sealing plate is in close contact with the inner wall of the liquid storage tank, and the sealing plate 23 does not contact the liquid outlet of the liquid storage tank under the elastic force of the sealing plate.

[0011] Furthermore, the lubrication mechanism two includes a receiving groove. Four sets of receiving grooves are arranged around the surface of the swash plate. A return spring two is fixedly connected to the bottom of the receiving groove. A push block is fixedly connected to the end of the return spring two away from the swash plate. Solid lubricant is fixedly connected to the surface of the push block.

[0012] Furthermore, the bottom of the solid lubricant is bonded and fixed to the surface of the push block, and the side of the push block is in close contact with the inner wall of the receiving groove.

[0013] Furthermore, the push block adopts a rubber structure, and the two ends of the second reset spring are fixedly connected to the push block and the bottom of the storage groove, respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention forms a multi-directional, full-coverage lubrication system by setting a lubrication mechanism one on both sides of the swashplate and a lubrication mechanism two around the annular surface of the swashplate. It combines liquid and solid lubrication, resulting in excellent lubrication performance and effectively solving the problem of insufficient lubrication in large-displacement bidirectional swashplate compressors. The overall lubrication structure is integrated into the swashplate body, eliminating the need to increase the compressor's size and weight, and preserving the original assembly relationship. This facilitates upgrades and modifications to existing products, reduces manufacturing costs, and enhances practicality. Lubrication mechanism one utilizes the centrifugal force generated by the swashplate rotation, combined with the capillary action of the guide rope, to achieve quantitative and directional delivery of lubricating oil. This forms a stable lubricating oil film on the contact surface between the swashplate and the piston slipper, reducing friction and wear. Simultaneously, a return spring one is installed in the liquid reservoir, which automatically adjusts the liquid output under centrifugal force to adapt to lubrication needs under different operating conditions. Lubrication mechanism two employs an automatic compensation structure using solid lubricant and return spring two, continuously lubricating the mating surface between the annular edge of the swashplate and the support bearing without requiring additional oil supply. The structure is simple and compact, and the solid lubricant automatically extends to compensate after wear, ensuring continuous and stable lubrication. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the lubrication mechanism of the present invention; Figure 3 This is a schematic diagram of the liquid-guiding rope structure of the present invention; Figure 4 This is a schematic diagram of the second lubrication mechanism of the present invention; In the diagram: 1. Swashplate; 2. Lubrication mechanism one; 21. Liquid guide groove; 22. Sealing cap; 23. Sealing plate; 24. Liquid storage tank; 25. Return spring one; 26. Liquid guide rope; 3. Rotating shaft; 4. Lubrication mechanism two; 41. Solid lubricant; 42. Push block; 43. Return spring two; 44. Storage groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0017] Please see Figure 1-4 The present invention provides the following technical solution: a swashplate support lubrication structure for a large displacement bidirectional swashplate compressor for trucks, including a rotating shaft 3, a swashplate 1 fixedly connected to the middle of the rotating shaft 3, a plurality of lubrication mechanisms 1 2 provided on both sides of the swashplate 1, and a lubrication mechanism 2 4 provided around the annular surface of the swashplate 1.

[0018] Furthermore, in this invention, the lubrication mechanism 2 includes a liquid storage tank 24. The liquid storage tank 24 is provided around the surface of the swash plate 1. Sealing caps 22 are provided on both sides of the liquid storage tank 24. A liquid guiding groove 21 is provided on the surface of the swash plate 1 near the liquid storage tank 24. An outlet is provided between the liquid guiding groove 21 and the liquid storage tank 24.

[0019] By adopting the above technical solution, the liquid storage tank 24 is used to store compressor-specific lubricating oil, the sealing cap 22 is used to seal both ends of the liquid storage tank 24 to prevent the lubricating oil from leaking under centrifugal force, the liquid guide tank 21 is used to guide the lubricating oil to the contact friction surface between the swash plate 1 and the piston slipper, and the liquid outlet is used to connect the liquid storage tank 24 and the liquid guide tank 21 to realize the directional delivery of lubricating oil.

[0020] Furthermore, in this invention, a liquid guiding rope 26 is provided inside the liquid guiding tank 21, and one end of the liquid guiding rope 26 is in close contact with the liquid outlet of the liquid storage tank 24.

[0021] By adopting the above technical solution, the liquid guiding rope 26 is made of cotton or synthetic fiber material with excellent oil absorption performance. It uses capillary action to absorb and transport the lubricating oil in the liquid storage tank 24 to various positions in the liquid guiding tank 21, ensuring that the lubricating oil can be evenly distributed on the surface of the swash plate 1 and avoiding local lubrication deficiency.

[0022] Furthermore, in this invention, a return spring 25 is fixedly connected to the end of the liquid storage tank 24 away from the liquid guiding tank 21, and a sealing plate 23 is connected to the surface of the return spring 25.

[0023] By adopting the above technical solution, the reset spring 25 is welded and fixed to the inner wall of the liquid storage tank 24, which provides stable support and installation reference for the reset spring 25.

[0024] Furthermore, in this invention, the end of the sealing plate 23 near the liquid guiding groove 21 is designed with an arc surface structure, and the return spring 25 is in close contact with the inner wall of the liquid storage tank 24. Under the elastic force of the sealing plate 23, the return spring 25 does not contact the liquid outlet of the liquid storage tank 24.

[0025] By adopting the above technical solution, the arc-shaped structure of the sealing plate 23 can reduce the flow resistance of the lubricating oil and prevent the lubricating oil from accumulating at the end of the spring. When the swash plate 1 rotates, the sealing plate 23 moves towards the liquid outlet under the action of centrifugal force, compressing the return spring 25, thereby increasing the flow area of ​​the liquid outlet and increasing the amount of lubricating oil flowing out. When the speed of the swash plate 1 decreases, the return spring 25 resets under its own elastic force, reducing the flow area of ​​the liquid outlet and reducing the amount of lubricating oil flowing out, thereby realizing the function of automatically adjusting the amount of lubricating oil supplied according to the speed of the compressor. Example

[0026] The difference between this embodiment and embodiment 1 is that the lubrication mechanism 2 4 includes a receiving groove 44. Four sets of receiving grooves 44 are arranged around the surface of the swash plate 1. A reset spring 2 43 is fixedly connected to the bottom of the receiving groove 44. A push block 42 is fixedly connected to the end of the reset spring 2 43 away from the swash plate 1. A solid lubricant 41 is fixedly connected to the surface of the push block 42.

[0027] By adopting the above technical solution, four sets of receiving grooves 44 are evenly arranged around the annular surface of the swash plate 1 to ensure that the solid lubricant 41 can evenly contact the support bearing at the annular edge of the swash plate 1, thereby achieving full circumferential lubrication; the second reset spring 43 is used to push the push block 42 and the solid lubricant 41 to extend outward, so that the solid lubricant 41 always maintains close contact with the inner ring of the support bearing.

[0028] Furthermore, in this invention, the bottom of the solid lubricant 41 is bonded and fixed to the surface of the push block 42, and the side of the push block 42 is in close contact with the inner wall of the receiving groove 44.

[0029] By adopting the above technical solution, the solid lubricant 41 and the push block 42 are bonded and fixed with high-temperature resistant epoxy resin, which facilitates later replacement and assembly; the side of the push block 42 is in close contact with the inner wall of the storage groove 44, which can prevent the push block 42 from shaking in the storage groove 44, ensure the stability of the movement direction of the solid lubricant 41, and avoid uneven wear.

[0030] Furthermore, in this invention, the push block 42 is made of rubber, and the two ends of the reset spring 43 are fixedly connected to the bottom of the push block 42 and the receiving groove 44, respectively.

[0031] By adopting the above technical solution, the rubber push block 42 has a certain buffering and vibration reduction effect, which can absorb the vibration generated when the solid lubricant 41 comes into contact with the support bearing and reduce the operating noise of the compressor; the two ends of the reset spring 43 are welded and fixed to the bottom of the push block 42 and the receiving groove 44 respectively to ensure a firm connection and prevent the push block 42 from falling off when rotating at high speed.

[0032] The working principle and usage process of this invention: When using this invention, first open the sealing cover 22, inject an appropriate amount of compressor-specific refrigeration lubricating oil into the liquid storage tank 24, tighten the sealing cover 22 after the oil is injected to ensure that the liquid storage tank 24 is well sealed and to prevent lubricating oil leakage, fix the slant plate 1 with the lubrication structure assembled on the rotating shaft 3 with a flat key, and install it into the compressor housing according to the original assembly process of the compressor to complete the overall assembly.

[0033] When the compressor is working, the engine drives the rotating shaft 3 to rotate at high speed via the pulley. The rotating shaft 3 then drives the swashplate 1 to rotate synchronously. The piston slippers on both sides of the swashplate 1 reciprocate linearly along the surface of the swashplate 1, pushing the piston to reciprocate within the cylinder, thus realizing the intake, compression, and discharge of refrigerant gas. At this time, lubrication mechanism 1 and lubrication mechanism 4 work simultaneously to provide all-round and continuous lubrication for the swashplate 1. The working process of lubrication mechanism 2: The high-speed rotation of swash plate 1 generates centrifugal force. Under the action of centrifugal force, the lubricating oil in the reservoir 24 flows towards the outlet. At the same time, the guide rope 26 absorbs and transports the lubricating oil to various positions of the guide groove 21 through capillary action. The lubricating oil is evenly distributed on both sides of the swash plate 1 along the guide groove 21, forming a stable lubricating oil film on the contact surface between the swash plate 1 and the piston slipper, separating the two friction surfaces and greatly reducing friction and wear between them. At the same time, the return spring 25 moves towards the outlet under the action of centrifugal force, overcoming its own elasticity, increasing the flow area of ​​the outlet and increasing the amount of lubricating oil flowing out, meeting the greater lubrication demand under high-speed conditions. When the speed of swash plate 1 decreases, the centrifugal force decreases, and the return spring 25 returns to the sealing plate 23 under its own elasticity, gradually reducing the flow area of ​​the outlet, reducing the amount of lubricating oil flowing out, avoiding lubricating oil waste, and achieving adaptive matching between the lubricating oil supply and the working conditions.

[0034] The working process of lubrication mechanism 2 4: The annular edge of the swash plate 1 rotates in conjunction with the inner ring of the support bearing inside the compressor. Under the action of the pre-tightening spring 2 43, the push block 42 is pushed to move outward of the receiving groove 44, so that the solid lubricant 41 on the surface of the push block 42 is always in close contact with the inner ring of the support bearing. The solid lubricant 41 wears slowly under the friction with the inner ring of the support bearing, forming a uniform solid lubricating film, which continuously lubricates the mating surface between the annular edge of the swash plate 1 and the support bearing. As the solid lubricant 41 wears continuously, the return spring 2 43 gradually extends, continuously pushing the push block 42 and the remaining solid lubricant 41 outward, automatically compensating for the wear of the solid lubricant 41, ensuring the continuity and stability of lubrication, until the solid lubricant 41 is completely consumed.

[0035] When the lubricating oil in the reservoir 24 is exhausted or the solid lubricant 41 is worn out, simply remove the compressor end cover, open the sealing cover 22 to replenish the lubricating oil in the reservoir 24, or replace the push block 42 with new solid lubricant 41. The maintenance operation is simple and convenient.

[0036] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0037] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks, comprising a rotating shaft (3), characterized in that: The rotating shaft (3) is fixedly connected to the middle of the swash plate (1), and several lubrication mechanisms (2) are provided on both sides of the swash plate (1), and lubrication mechanisms (4) are provided around the annular surface of the swash plate (1).

2. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 1, characterized in that: The lubrication mechanism 1 (2) includes a liquid storage tank (24). The liquid storage tank (24) is provided around the surface of the swash plate (1). Sealing caps (22) are provided on both sides of the liquid storage tank (24). A liquid guide groove (21) is provided on the surface of the swash plate (1) near the liquid storage tank (24). An outlet is provided between the liquid guide groove (21) and the liquid storage tank (24).

3. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 2, characterized in that: The liquid guiding tank (21) is provided with a liquid guiding rope (26) inside, and one end of the liquid guiding rope (26) is closely attached to the liquid outlet of the liquid storage tank (24).

4. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 2, characterized in that: A reset spring (25) is fixedly connected to the end of the liquid storage tank (24) away from the liquid guide tank (21), and a sealing plate (23) is connected to the surface of the reset spring (25).

5. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 4, characterized in that: The end of the sealing plate (23) near the liquid guide groove (21) is set as an arc surface structure. The sealing plate (23) is in close contact with the inner wall of the liquid storage tank (24). Under the elastic force of the sealing plate (23), the sealing plate (23) does not contact the liquid outlet of the liquid storage tank (24).

6. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 1, characterized in that: The second lubrication mechanism (4) includes a receiving groove (44). Four sets of receiving grooves (44) are arranged around the surface of the swash plate (1). A second return spring (43) is fixed to the bottom of the receiving groove (44). A push block (42) is fixed to the end of the second return spring (43) away from the swash plate (1). A solid lubricant (41) is fixed to the surface of the push block (42).

7. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 6, characterized in that: The bottom of the solid lubricant (41) is bonded and fixed to the surface of the push block (42), and the side of the push block (42) is in close contact with the inner wall of the storage groove (44).

8. The swashplate support and lubrication structure for a large-displacement bidirectional swashplate compressor for trucks according to claim 6, characterized in that: The push block (42) is made of rubber, and the two ends of the reset spring (43) are fixed to the bottom of the push block (42) and the storage groove (44) respectively.

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