CN212155079U - Anti-channeling structure of swash plate type compressor main shaft - Google Patents
Anti-channeling structure of swash plate type compressor main shaft Download PDFInfo
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- CN212155079U CN212155079U CN202020712022.1U CN202020712022U CN212155079U CN 212155079 U CN212155079 U CN 212155079U CN 202020712022 U CN202020712022 U CN 202020712022U CN 212155079 U CN212155079 U CN 212155079U
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Abstract
The utility model relates to an anti-channeling structure of swash plate compressor main shaft, including preceding cylinder body, slide bearing, main shaft, swash plate, compression spring, outer thrust piece, thrust bearing and inner thrust piece, preceding cylinder body middle part is equipped with the dead eye, and the slide bearing location is in the dead eye, the main shaft passes through slide bearing and is connected with the rotation of preceding cylinder body, and the swash plate is connected with the main shaft; the pressure spring, the outer thrust plate, the thrust needle bearing and the inner thrust plate are sequentially sleeved outside the main shaft and positioned between the front cylinder body and the inclined plate; the middle part of the front cylinder body is also provided with a spring counter bore coaxial with the bearing hole, the diameter of the spring counter bore is larger than that of the bearing hole, and the pressure spring is positioned in the spring counter bore. The utility model discloses assembly process is simple, assembly efficiency is high, has not only played the effect that prevents the main shaft axial float, can reduce the compressor noise, improve the compressor performance, improves the life of compressor.
Description
Technical Field
The utility model belongs to the technical field of vehicle air conditioner compressor, a swash plate compressor is related to, in particular to swash plate compressor main shaft prevent scurrying structure.
Background
In order to ensure the performance and stability of the compressor, the size of the axial play distance S of the main shaft of the compressor needs to be strictly controlled within a small range, and the optimal state is when S = 0. In order to realize S =0, the value of S generally needs to be detected in the assembly process, and then the outer thrust piece with the corresponding value after grading is selected according to the measured S, so that the assembly process is complex, the operation is complex, and the efficiency is low.
In addition, in an actual assembly operation, the dimension of the axial play distance S is difficult to control well due to an error in measurement of parts and an error in deformation of parts caused by a screw locking force during the assembly of the parts. When S is greater than 0, the compressor can cause axial movement of the main shaft during operation, the noise is increased, and the performance is deteriorated; when S is less than 0, the axial pressing force of the main shaft is too large, so that the power of the compressor is increased, the thrust needle roller bearing of the compressor is too large in stress and easy to fatigue and damage, and the service life of the compressor is shortened.
Disclosure of Invention
The utility model aims at providing an assembly process is simple, the swash plate compressor main shaft that assembly efficiency is high prevents scurrying the structure, and the prevent scurrying structure of this main shaft has not only played the effect that prevents the main shaft axial float, can reduce compressor noise, improve the compressor performance, improves the life of compressor, the effectual problem of having solved prior art existence.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: an anti-channeling structure of a main shaft of an inclined plate type compressor comprises a front cylinder body, a sliding bearing, a main shaft and an inclined plate, wherein a bearing hole is formed in the middle of the front cylinder body, the sliding bearing is positioned in the bearing hole, the main shaft is rotatably connected with the front cylinder body through the sliding bearing, and the inclined plate is connected with the main shaft; the main shaft is sleeved with the pressure spring, the outer thrust sheet, the thrust needle roller bearing and the inner thrust sheet in sequence, and the pressure spring, the outer thrust sheet, the thrust needle roller bearing and the inner thrust sheet are positioned between the front cylinder body and the inclined plate; the middle part of the front cylinder body is also provided with a spring counter bore coaxial with the bearing hole, the diameter of the spring counter bore is larger than that of the bearing hole, and the pressure spring is positioned in the spring counter bore.
The utility model discloses a further technical scheme is: the rolling bearing is in interference fit with the bearing hole, and the pressure spring is in clearance fit with the spring counter bore.
The utility model discloses a further technical scheme is: the end face of the rolling bearing protrudes out of the bottom face of the spring counter bore.
The utility model discloses a further technical scheme is: after the assembly is finished, the spring force of the pressure spring is 70% -90% of the rated load of the thrust needle bearing.
The utility model discloses a swash plate compressor main shaft prevent scurrying structure owing to adopt above-mentioned structure, has following beneficial effect:
1. after the anti-channeling structure of the main shaft of the utility model is added to the swash plate compressor in the prior art, the axial channeling distance S of the main shaft of the compressor can be controlled between 0.05 mm and 0.5mm, so that the gap is easier to control; meanwhile, the elasticity of the pressure spring is basically constant within the range of the axial float distance S of the main shaft, so that the main shaft is ensured not to generate axial float, and adverse phenomena of high power, reduced service life and the like of a compressor caused by overlarge axial pressing force of the main shaft when S <0 are avoided;
2. by adopting the anti-channeling structure of the main shaft, the external thrust pieces do not need to be graded and selected during assembly, the assembly process of the compressor is simplified, the assembly efficiency of the compressor is improved, and the one-time qualification rate of product production is also improved;
3. the utility model discloses the spring force that pressure spring compression corresponds after the assembly is accomplished is between 70% ~90% of thrust bearing rated load, has so not only played the effect that prevents compressor axial float, can reduce compressor noise, improve the compressor performance, still can not influence thrust bearing's life simultaneously.
The anti-moving structure of the swash plate compressor main shaft according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural view of an anti-channeling structure of a main shaft of a swash plate compressor according to the present invention;
FIG. 2 is a schematic view of the exploded structure of the present invention;
FIG. 3 is a schematic view of the assembled structure of the present invention;
FIG. 4 is a cross-sectional view of the front cylinder;
the reference numbers illustrate: 1-main shaft, 2-front cylinder body, 21-spring counter bore, 22-bearing hole, 3-sloping plate, 4-sliding bearing, 5-pressure spring, 6-outer thrust sheet, 7-thrust needle bearing and 8-inner thrust sheet.
Detailed Description
As shown in fig. 1 to 4, the utility model relates to a swash plate compressor main shaft anti-channeling structure, including preceding cylinder body 2, slide bearing 4, main shaft 1, swash plate 3, compression spring 5, outer thrust piece 6, thrust needle bearing 7 and interior thrust piece 8.
The middle part of the front cylinder body 2 is provided with a bearing hole 22, the rolling bearing 4 is positioned in the bearing hole 22, and the sliding bearing 4 is in interference fit with the bearing hole 22; the main shaft 1 is rotatably connected with the front cylinder body 2 through a sliding bearing 4, and the inclined plate 3 is connected with the main shaft 1; the pressure spring 5, the outer thrust piece 6, the thrust needle bearing 7 and the inner thrust piece 8 are sequentially sleeved on the outer side of the main shaft 1 and are positioned between the front cylinder body 2 and the inclined plate 3; the middle part of the front cylinder body 2 is also provided with a spring counter bore 21 which is coaxial with the bearing hole 22, the diameter of the spring counter bore 21 is larger than that of the bearing hole 22, the pressure spring 5 is positioned in the spring counter bore 21, and the pressure spring 5 is in clearance fit with the spring counter bore 21.
The utility model discloses in, slide bearing 4 assembles back in the dead eye 22 of preceding cylinder body 2, and slide bearing 4's terminal surface protrusion spring counter bore 21's bottom surface plays the effect of direction between two parties to pressure spring 5 when assembling pressure spring 5, also plays spacing effect between two parties simultaneously in the compressor operation.
In addition, the spring force corresponding to the compression amount of the pressure spring 5 after assembly is 70% -90% of the rated load of the thrust needle bearing 7, so that the axial movement of the compressor is prevented, and the service life of the thrust needle bearing 7 is not affected.
After the anti-channeling structure of the main shaft is added to the swash plate type compressor in the prior art, the axial channeling distance S of the main shaft of the compressor can be controlled to be 0.05-0.5 mm, so that the gap is easier to control; in addition, by adopting the structure, the outer thrust pieces do not need to be graded and selected during assembly, so that the assembly efficiency of the compressor is improved; meanwhile, the elasticity of the pressure spring is basically constant within the range of the axial float distance S of the main shaft, so that the main shaft is ensured not to generate axial float, and adverse phenomena of high power, reduced service life and the like of a compressor caused by overlarge axial pressing force of the main shaft when S <0 are avoided.
The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (4)
1. The anti-channeling structure of the main shaft of the swash plate type compressor comprises a front cylinder body (2), a sliding bearing (4), a main shaft (1) and a swash plate (3), wherein a bearing hole (22) is formed in the middle of the front cylinder body (2), the sliding bearing (4) is positioned in the bearing hole (22), the main shaft (1) is rotatably connected with the front cylinder body (2) through the sliding bearing (4), and the swash plate (3) is connected with the main shaft (1); the method is characterized in that: the hydraulic oil cylinder further comprises a pressure spring (5), an outer thrust plate (6), a thrust needle bearing (7) and an inner thrust plate (8), wherein the pressure spring (5), the outer thrust plate (6), the thrust needle bearing (7) and the inner thrust plate (8) are sequentially sleeved on the outer side of the main shaft (1) and are positioned between the front cylinder body (2) and the inclined plate (3); the middle part of the front cylinder body (2) is also provided with a spring counter bore (21) which is coaxial with the bearing hole (22), the diameter of the spring counter bore (21) is larger than that of the bearing hole (22), and the pressure spring (5) is positioned in the spring counter bore (21).
2. The anti-channeling structure of a main shaft of a swash plate type compressor according to claim 1, wherein the sliding bearing (4) is interference-fitted with a bearing hole (22), and the compression spring (5) is clearance-fitted with a spring counterbore (21).
3. A run-in prevention structure of a main shaft of a swash plate type compressor according to claim 1, wherein the end surface of the sliding bearing (4) protrudes the bottom surface of the spring counterbore (21).
4. The anti-channeling structure of a main shaft of a swash plate type compressor according to claim 1, wherein the spring force of the pressure spring (5) after the assembly is completed is 70% to 90% of the rated load of the needle thrust bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020712022.1U CN212155079U (en) | 2020-04-30 | 2020-04-30 | Anti-channeling structure of swash plate type compressor main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020712022.1U CN212155079U (en) | 2020-04-30 | 2020-04-30 | Anti-channeling structure of swash plate type compressor main shaft |
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| CN212155079U true CN212155079U (en) | 2020-12-15 |
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| CN202020712022.1U Active CN212155079U (en) | 2020-04-30 | 2020-04-30 | Anti-channeling structure of swash plate type compressor main shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263599A (en) * | 2021-11-30 | 2022-04-01 | 西安红庆机械厂 | Helical gear pump with axial play compensation and method for reducing wear thereof |
-
2020
- 2020-04-30 CN CN202020712022.1U patent/CN212155079U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263599A (en) * | 2021-11-30 | 2022-04-01 | 西安红庆机械厂 | Helical gear pump with axial play compensation and method for reducing wear thereof |
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