CN112959876B - Air conditioner compressor clutch device for new energy automobile and new energy automobile - Google Patents
Air conditioner compressor clutch device for new energy automobile and new energy automobile Download PDFInfo
- Publication number
- CN112959876B CN112959876B CN202110392100.3A CN202110392100A CN112959876B CN 112959876 B CN112959876 B CN 112959876B CN 202110392100 A CN202110392100 A CN 202110392100A CN 112959876 B CN112959876 B CN 112959876B
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- bushing
- input shaft
- plate
- output shaft
- new energy
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- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 2
- 239000000446 fuel Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3222—Cooling devices using compression characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses an air conditioner compressor clutch device for a new energy automobile and the new energy automobile, comprising an input shaft, an output shaft, a bushing, a pressurizing mechanism and a rebound mechanism, wherein the input shaft is connected with the bushing; the input shaft is inserted into one end of the output shaft and is in clearance fit with the output shaft, and a plurality of inner friction plates are arranged on the outer surface of the input shaft; one end of the bushing is connected with the pressurizing mechanism, the other end of the bushing is connected with the rebound mechanism, the bushing is connected with the output shaft, a plurality of outer friction plates are arranged on the inner surface of the bushing, and the inner friction plates and the outer friction plates are alternately distributed; when the pressure is applied, the pressurizing mechanism pushes the bushing to move, so that the inner friction plate and the outer friction plate are pressed for power transmission, and when the pressure is released, the rebound mechanism pushes the bushing to move reversely, so that the inner friction plate and the outer friction plate are separated for interrupting the power transmission. The invention has the advantages of small impact on the driving motor at the moment of starting, difficult damage to the compressor and long service life.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to an air conditioner compressor clutch device for a new energy automobile and the new energy automobile.
Background
The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel automobile-mounted power device) and integrates the advanced technology in the aspects of power control and driving of the automobile, and the formed technical principle is advanced, the automobile has a new technology and a new structure, and the new energy automobile comprises a pure electric automobile, a range-extending electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like.
In order to improve the comfort of the new energy automobile, an air conditioner compressor clutch device needs to be installed. The existing clutch device of the air conditioner compressor suitable for the new energy automobile directly drives the output shaft to rotate at the moment of starting, has larger impact on the driving motor and is easy to damage the compressor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an air conditioner compressor clutch device for a new energy automobile and the new energy automobile, which have the advantages of small impact on a driving motor at the moment of starting, difficult damage to a compressor and long service life.
The invention provides the following technical scheme:
An air conditioner compressor clutch device for a new energy automobile comprises an input shaft, an output shaft, a bushing, a supercharging mechanism and a rebound mechanism;
The input shaft is inserted into one end of the output shaft and is in clearance fit with the output shaft, and a plurality of inner friction plates are arranged on the outer surface of the input shaft;
One end of the bushing is connected with the pressurizing mechanism, the other end of the bushing is connected with the rebound mechanism, the bushing is connected with the output shaft, a plurality of outer friction plates are arranged on the inner surface of the bushing, and the inner friction plates and the outer friction plates are alternately distributed;
When the pressure is applied, the pressurizing mechanism pushes the bushing to move, so that the inner friction plate and the outer friction plate are pressed for power transmission, and when the pressure is released, the rebound mechanism pushes the bushing to move reversely, so that the inner friction plate and the outer friction plate are separated for interrupting the power transmission.
Further, the motor further comprises a shell and an end cover which are fixedly connected, the input shaft is rotationally connected with the shell through a first thrust bearing, and the output shaft is rotationally connected with the end cover through a third thrust bearing.
Further, the pressurizing mechanism comprises a piston and a pressing plate which are connected through a second thrust bearing;
The two ends of the second thrust bearing are respectively provided with a second left thrust plate and a second right thrust plate, the second left thrust plate is arranged on the end face of the piston, and the second right thrust plate is arranged in the groove of the pressing plate;
The pressing plate is arranged between the shell and the input shaft, the pressing plate can form a cylindrical surface pair with the input shaft or the shell, and the pressing plate is fixedly connected with the bushing.
Further, the one end that the shell is close to the input shaft is equipped with the pressurization intracavity, the one end of piston is located the pressurization intracavity, and can follow the inner wall in pressurization intracavity and remove, the shell outside is equipped with the hydraulic pressure input interface with the pressurization chamber intercommunication, the pressurization chamber is equipped with the first sealed pad and the second sealed pad that are located the piston both sides.
Further, the rebound mechanism comprises a second spring, and two ends of the second spring are respectively connected with the bushing and the end cover.
Further, two ends of the first thrust bearing are respectively provided with a first left thrust plate and a first right thrust plate, the first left thrust plate is arranged on the inner surface of the shell, the first right thrust plate is arranged on the step surface of the input shaft, and the shell is provided with a first inner clamping spring which is close to the first right thrust plate and can limit the axial movement of the first thrust bearing;
and the two ends of the third thrust bearing are respectively provided with a third left thrust plate and a third right thrust plate, the third right thrust plates are arranged on the surface of the end cover, and the third left thrust plates are arranged on the surface of the output shaft.
Further, a first oil seal is arranged between the shell and the input shaft, and a second oil seal is arranged between the end cover and the output shaft; one end of the output shaft is provided with a mounting cavity for accommodating the insertion of the input shaft, one end, close to the mounting cavity, of the input shaft is provided with a first spring cavity, and a first spring is connected between the first spring cavity and the mounting cavity.
Further, the bushing is installed in the cavity of the shell, the bushing can axially move relative to the shell, a plurality of inner grooves are formed in the inner surface of the bushing, and the outer friction plates are installed on the surfaces of the inner grooves.
Further, the outer surface of the input shaft is provided with a plurality of outer grooves, and the surfaces of the outer grooves are provided with inner friction plates; and one end of the output shaft, which is close to the input shaft, is provided with a secondary friction plate.
A new energy automobile comprises the clutch device of the air conditioner compressor for the new energy automobile.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the input shaft is inserted into one end of the output shaft, and the input shaft is in clearance fit with the output shaft, so that the input shaft and the output shaft are in weak transmission action; when the pressure is applied, the pressurizing mechanism pushes the bushing to move, so that the inner friction plate and the outer friction plate are compressed, and the power transmission is transmitted along the direction of the input shaft, the inner friction plate, the outer friction plate, the bushing and the output shaft, so that the aim of indirectly driving the output shaft to rotate by the input shaft is fulfilled; during pressure relief, the rebound mechanism pushes the bushing to reversely move, so that the inner friction plate and the outer friction plate are separated to generate a gap, and power transmission is interrupted; therefore, the device has small impact on the driving motor at the moment of starting, the compressor is not easy to damage, and the service life is long.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view of a bushing;
FIG. 5 is a schematic structural view of an outer friction plate;
FIG. 6 is a schematic structural view of an input shaft;
FIG. 7 is a schematic view of the structure of the inner friction plate;
FIG. 8 is a schematic structural view of an output shaft;
Marked in the figure as: 1-input shaft, 2-first oil seal, 3-hydraulic input interface, 4-first gasket, 5-second gasket, 6-bushing, 7-housing, 8-second spring, 9-end cap, 10-output shaft, 11-second oil seal, 12-third thrust bearing, 121-third thrust bearing left thrust plate, 122-third thrust bearing right thrust plate, 13-first spring, 14-outer friction plate, 15-inner friction plate, 16-second thrust bearing, 161-second left thrust plate, 162-second right thrust plate, 17-first inner snap spring, 18-first thrust bearing, 181-first left thrust plate, 182-first right thrust plate, 19-piston, 20-platen, 21-pressurization cavity, 22-outer slot, 23-inner slot, 24-auxiliary friction plate, 25-first spring cavity, 26-installation cavity.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 to 3, the present embodiment provides an air conditioner compressor clutch device for a new energy automobile, comprising an input shaft 1, an output shaft 10, a bushing 6, a supercharging mechanism and a rebound mechanism; the input shaft 1 is inserted into one end of the output shaft 10, the input shaft 1 is in clearance fit with the output shaft 10, and a plurality of inner friction plates 15 are arranged on the outer surface of the input shaft 1; one end of the bushing 6 is connected with the pressurizing mechanism, the other end of the bushing 6 is connected with the rebound mechanism, the bushing 6 is connected with the output shaft 10, the inner surface of the bushing 6 is provided with a plurality of outer friction plates 14, and the inner friction plates 15 and the outer friction plates 14 are alternately distributed; when the pressure is applied, the pressurizing mechanism pushes the bushing 6 to move, so that the inner friction plate 15 and the outer friction plate 14 are pressed for power transmission, and when the pressure is released, the rebound mechanism pushes the bushing 6 to move reversely, so that the inner friction plate 15 and the outer friction plate 14 are separated for interrupting power transmission.
As shown in fig. 1-3, the clutch device for an air conditioner compressor of a new energy automobile provided in this embodiment further includes a housing 7 and an end cover 9 that are fixedly connected, the input shaft 1 is rotationally connected with the housing 7 through a first thrust bearing 18, and the output shaft 10 is rotationally connected with the end cover 9 through a third thrust bearing 12.
As shown in fig. 3, the pressurizing mechanism includes a piston 19 and a pressure plate 20 connected by a second thrust bearing 16; the two ends of the second thrust bearing 16 are respectively provided with a second left thrust plate 161 and a second right thrust plate 162, the second left thrust plate 161 is arranged on the end surface of the piston 19, and the second right thrust plate 162 is arranged in the groove of the pressing plate 20; the pressure plate 20 is installed between the housing 7 and the input shaft 1, and the pressure plate 20 can form a cylindrical pair with the input shaft 1 or the housing 7, and the pressure plate 20 is fixedly connected with the bushing 6. The one end that shell 7 is close to input shaft 1 is equipped with the pressurization chamber 21, and the one end of piston 19 is located in the pressurization chamber 21, and can follow the inner wall removal in pressurization chamber 21, and the shell 7 outside is equipped with the hydraulic pressure input interface 3 with pressurization chamber 21 intercommunication, and pressurization chamber 21 is equipped with the first sealed pad 4 and the second sealed pad 5 that are located the piston 19 both sides for improve the leakproofness, leak when preventing to take place in the pressurization chamber 21 to refuel.
As shown in fig. 3, the rebound mechanism includes a second spring 8, and both ends of the second spring 8 are connected to the bush 6 and the end cap 9, respectively.
As shown in fig. 3, 4 and 5, the bushing 6 is mounted in the cavity of the housing 7, the bushing 6 is capable of axial movement relative to the housing 7, the inner surface of the bushing 6 is provided with a plurality of inner grooves 23, and the inner grooves 23 are surface mounted with the outer friction plates 14. As shown in fig. 8, the output shaft 10 is provided with a secondary friction plate 24 having a similar structure to the outer friction plate 14 at one end near the input shaft 1, and is caught in the inner groove 23 of the bush 6. As shown in fig. 6 and 7, the outer surface of the input shaft 1 is provided with a plurality of outer grooves 22, and the inner friction plates 15 are mounted on the surface of the outer grooves 22.
The working principle of the invention is as follows: firstly, an input shaft 1 of the device is connected with an output shaft of a driving motor of a new energy automobile, an output shaft 10 is connected with a driving shaft of a compressor, a hydraulic input interface 3 is connected with a high-pressure control oil way of the automobile, the relative position of a control piston 19 is achieved by controlling the oil pressure on the oil way, when the pressure on the oil way is increased, the piston 19 pushes a pressing plate to move towards the direction of the output shaft 10, at the moment, an inner friction plate 15 and an outer friction plate 14 are pressed, the friction force is increased, and power transmission is transmitted along the direction from the input shaft 1 to the inner friction plate 15 to the outer friction plate 14 to the bushing 6 to the output shaft 10, so that the aim that the input shaft 1 indirectly drives the output shaft 10 to rotate is fulfilled; when the oil pressure is reduced, the piston 19 moves towards the direction of the input shaft 1 under the action of the second spring 8, so that the inner friction plate 15 and the outer friction plate 14 are separated to generate a gap, and the power transmission is interrupted; according to the invention, the input shaft 1 is inserted into one end of the output shaft 10, the input shaft 1 is in clearance fit with the output shaft 10, the input shaft and the output shaft are in weak transmission action, the impact on a driving motor is small at the moment of starting the device, the compressor is not easy to damage, and the service life is long.
Example 2
As shown in fig. 3, the present embodiment provides an air conditioner compressor clutch device for a new energy automobile, two ends of a first thrust bearing 18 are respectively provided with a first left thrust plate 181 and a first right thrust plate 182, the first left thrust plate 181 is mounted on the inner surface of a housing 7, the first right thrust plate 182 is mounted on the step surface of an input shaft 1, and the housing 7 is provided with a first inner clamping spring 17 which is close to the first right thrust plate 182 and can limit the axial movement of the first thrust bearing 18; the third thrust bearing 12 has a third left thrust plate 121 and a third right thrust plate 122 at both ends thereof, the third right thrust plate 122 being mounted on the surface of the end cover, and the third left thrust plate 121 being mounted on the surface of the output shaft 10.
A first oil seal 2 is further arranged between the shell 7 and the input shaft 1, and a second oil seal 11 is further arranged between the end cover 9 and the output shaft 10, so that the tightness can be enhanced; one end of the output shaft 10 is provided with a mounting cavity 26 for accommodating the insertion of the input shaft 1, one end, close to the mounting cavity 26, of the input shaft 1 is provided with a first spring cavity 25, a first spring 13 is connected between the first spring cavity 25 and the mounting cavity 26, the first spring 13 enables the input shaft 1 and the output shaft 10 to have relatively far away force, so that the output shaft 10 presses the left thrust piece 121 of the third thrust bearing 12, the third thrust bearing 12 runs in a complete state, and the disassembly condition cannot occur.
The remaining structural parts and the operation principle of the present embodiment are the same as those of embodiment 1.
Example 3
The embodiment provides a new energy automobile, which comprises the air conditioner compressor clutch device for the new energy automobile. The rest of the structure and the working principle are the same as those of embodiment 1.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (7)
1. The clutch device of the air conditioner compressor for the new energy automobile is characterized by comprising an input shaft, an output shaft, a bushing, a pressurizing mechanism, a rebound mechanism, a shell and an end cover which are fixedly connected;
The input shaft is inserted into one end of the output shaft and is in clearance fit with the output shaft, and a plurality of inner friction plates are arranged on the outer surface of the input shaft;
One end of the bushing is connected with the pressurizing mechanism, the other end of the bushing is connected with the rebound mechanism, the bushing is connected with the output shaft, a plurality of outer friction plates are arranged on the inner surface of the bushing, and the inner friction plates and the outer friction plates are alternately distributed;
When the pressure is applied, the pressurizing mechanism pushes the bushing to move, so that the inner friction plate and the outer friction plate are pressed for power transmission, and when the pressure is released, the rebound mechanism pushes the bushing to move reversely, so that the inner friction plate and the outer friction plate are separated for interrupting the power transmission;
One end of the output shaft is provided with a mounting cavity for accommodating the insertion of the input shaft, one end, close to the mounting cavity, of the input shaft is provided with a first spring cavity, and a first spring is connected between the first spring cavity and the mounting cavity;
The pressurizing mechanism comprises a piston and a pressing plate which are connected through a second thrust bearing;
The two ends of the second thrust bearing are respectively provided with a second left thrust plate and a second right thrust plate, the second left thrust plate is arranged on the end face of the piston, and the second right thrust plate is arranged in the groove of the pressing plate;
the pressing plate is arranged between the shell and the input shaft, and can form a cylindrical surface pair with the input shaft or the shell, and the pressing plate is fixedly connected with the bushing;
the rebound mechanism comprises a second spring, and two ends of the second spring are respectively connected with the bushing and the end cover;
the input shaft is rotationally connected with the shell through a first thrust bearing, and the output shaft is rotationally connected with the end cover through a third thrust bearing.
2. The clutch device for an air conditioner compressor of a new energy automobile according to claim 1, wherein one end of the housing, which is close to the input shaft, is provided with a pressurizing cavity, one end of the piston is arranged in the pressurizing cavity and can move along the inner wall of the pressurizing cavity, a hydraulic input interface communicated with the pressurizing cavity is arranged outside the housing, and the pressurizing cavity is provided with a first sealing gasket and a second sealing gasket which are positioned at two sides of the piston.
3. The clutch device for an air conditioner compressor of a new energy automobile according to claim 1, wherein a first left thrust plate and a first right thrust plate are respectively arranged at two ends of the first thrust bearing, the first left thrust plate is arranged on the inner surface of a shell, the first right thrust plate is arranged on the step surface of the input shaft, and the shell is provided with a first inner clamping spring which is close to the first right thrust plate and can limit the axial movement of the first thrust bearing;
and the two ends of the third thrust bearing are respectively provided with a third left thrust plate and a third right thrust plate, the third right thrust plates are arranged on the surface of the end cover, and the third left thrust plates are arranged on the surface of the output shaft.
4. The clutch device for an air conditioner compressor of a new energy automobile according to claim 1, wherein a first oil seal is further arranged between the housing and the input shaft, and a second oil seal is further arranged between the end cover and the output shaft.
5. The clutch device for an air conditioner compressor of a new energy automobile according to claim 1, wherein the bushing is installed in a cavity of the housing, the bushing is capable of moving axially relative to the housing, the inner surface of the bushing is provided with a plurality of inner grooves, and the inner groove surface is provided with an outer friction plate.
6. The clutch device for an air conditioner compressor of a new energy automobile according to claim 5, wherein the outer surface of the input shaft is provided with a plurality of outer slots, and the inner friction plates are arranged on the surfaces of the outer slots; and one end of the output shaft, which is close to the input shaft, is provided with a secondary friction plate.
7. A new energy vehicle, characterized by comprising the air conditioner compressor clutch device for a new energy vehicle according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392100.3A CN112959876B (en) | 2021-04-13 | 2021-04-13 | Air conditioner compressor clutch device for new energy automobile and new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392100.3A CN112959876B (en) | 2021-04-13 | 2021-04-13 | Air conditioner compressor clutch device for new energy automobile and new energy automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112959876A CN112959876A (en) | 2021-06-15 |
| CN112959876B true CN112959876B (en) | 2024-05-31 |
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ID=76280252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110392100.3A Active CN112959876B (en) | 2021-04-13 | 2021-04-13 | Air conditioner compressor clutch device for new energy automobile and new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112959876B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB728875A (en) * | 1952-06-11 | 1955-04-27 | Lambert & Brake Corp | A new or improved friction device |
| US4226319A (en) * | 1978-11-06 | 1980-10-07 | Lambert Brake Corporation | Hydraulic clutch |
| US4566572A (en) * | 1984-01-09 | 1986-01-28 | Dana Corporation | Clutch with a piloted and spring loaded driven disc hub |
| CN201281091Y (en) * | 2008-07-29 | 2009-07-29 | 梁业华 | Clutch of motorcycle |
| CN204186836U (en) * | 2014-09-17 | 2015-03-04 | 宁波捷龙动力科技有限公司 | A kind of miniature multidisc clutch |
| JP2016142369A (en) * | 2015-02-03 | 2016-08-08 | 本田技研工業株式会社 | Power force disconnecting mechanism |
| CN207470407U (en) * | 2017-11-06 | 2018-06-08 | 江麓机电集团有限公司 | A kind of core component of fluid pressure type control special vehicle air compressor machine intermittent duty |
| WO2018126592A1 (en) * | 2017-01-09 | 2018-07-12 | 山东理工大学 | Electric vehicle three-gear automatic transmission with brushless x-by-wire centrifugal ball arm engagement device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7320391B2 (en) * | 2004-06-24 | 2008-01-22 | Raybestos Products Company | Alternative pack designs for multidisk clutches |
| JP6509933B2 (en) * | 2017-03-15 | 2019-05-08 | 本田技研工業株式会社 | Power transmission |
-
2021
- 2021-04-13 CN CN202110392100.3A patent/CN112959876B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB728875A (en) * | 1952-06-11 | 1955-04-27 | Lambert & Brake Corp | A new or improved friction device |
| US4226319A (en) * | 1978-11-06 | 1980-10-07 | Lambert Brake Corporation | Hydraulic clutch |
| US4566572A (en) * | 1984-01-09 | 1986-01-28 | Dana Corporation | Clutch with a piloted and spring loaded driven disc hub |
| CN201281091Y (en) * | 2008-07-29 | 2009-07-29 | 梁业华 | Clutch of motorcycle |
| CN204186836U (en) * | 2014-09-17 | 2015-03-04 | 宁波捷龙动力科技有限公司 | A kind of miniature multidisc clutch |
| JP2016142369A (en) * | 2015-02-03 | 2016-08-08 | 本田技研工業株式会社 | Power force disconnecting mechanism |
| WO2018126592A1 (en) * | 2017-01-09 | 2018-07-12 | 山东理工大学 | Electric vehicle three-gear automatic transmission with brushless x-by-wire centrifugal ball arm engagement device |
| CN207470407U (en) * | 2017-11-06 | 2018-06-08 | 江麓机电集团有限公司 | A kind of core component of fluid pressure type control special vehicle air compressor machine intermittent duty |
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| Publication number | Publication date |
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| CN112959876A (en) | 2021-06-15 |
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