CN112013039B - Clutch and end cover thereof - Google Patents
Clutch and end cover thereof Download PDFInfo
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- CN112013039B CN112013039B CN202010825462.2A CN202010825462A CN112013039B CN 112013039 B CN112013039 B CN 112013039B CN 202010825462 A CN202010825462 A CN 202010825462A CN 112013039 B CN112013039 B CN 112013039B
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- lubricating oil
- hole
- clutch
- pressure
- oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/74—Features relating to lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/60—Clutching elements
- F16D13/62—Clutch-bands; Clutch shoes; Clutch-drums
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention provides a clutch and an end cover thereof, which comprise a shell, a bearing plate, an outer friction plate, an inner friction plate, a pressure plate piston, an oil cavity seat and a clutch shaft, wherein a gear bearing is arranged between a transmission gear and the clutch shaft, an oil sealing bush and the end cover are sleeved at the rear end of the clutch shaft, the end cover is fixedly connected with a box body, a pressure oil channel, a first lubricating oil channel and a second lubricating oil channel are arranged in the clutch shaft, a central hole, a pressure oil hole, a first lubricating oil hole and a second lubricating oil hole are arranged on the end cover, the pressure oil hole is connected with an external pressure oil path, the second lubricating oil hole is connected with the external lubricating oil path, the first lubricating oil hole is connected with the second lubricating oil hole through an automatic regulating valve, and pressure oil passes through the automatic regulating valve and switches on the automatic regulating valve. This scheme is equipped with the lubricating structure of automatically regulated lubricated oil mass, when the clutch was out of work, makes the continuous gear bearing of clutch rear end not add the lubricated oil lubrication to reduce the lubricated oil mass requirement to the system.
Description
Technical Field
The invention belongs to the technical field of transmission machinery, and particularly relates to a clutch and an end cover thereof.
Background
At present, the structure of the existing wet clutch and the lubrication of the gear bearing connected with the rear end of the clutch adopt a normally-open lubrication mode, namely, the lubricating oil lubricates the clutch and the gear bearing connected with the rear end of the clutch at all times regardless of the connection or disconnection of the clutch. When the clutch is disconnected and the gear bearing connected with the rear end of the clutch does not rotate, the gear bearing connected with the rear end of the clutch does not need to be lubricated, so that the waste of lubricating oil is caused, the requirement on the lubricating oil quantity of a system is increased, and the purpose of energy conservation is not met.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a clutch and an end cover thereof, which are provided with a lubricating structure for automatically adjusting the amount of lubricating oil, and when the clutch does not work, a gear bearing connected with the rear end of the clutch is not lubricated by the lubricating oil, so that the requirement on the amount of lubricating oil of a system is reduced, and the aim of saving energy is fulfilled.
In order to achieve the purpose, the invention adopts the following technical scheme:
a clutch comprises a shell 1, a bearing plate 2, an outer friction plate 4, an inner friction plate 5, a pressure plate piston 7, an oil cavity seat 8 and a clutch shaft 9, wherein the clutch shaft 9 is rotatably arranged on a box body 13, the shell 1 is rotatably arranged at the front end of the clutch shaft 9, the bearing plate 2, the pressure plate piston 7 and the oil cavity seat 8 are sleeved on the clutch shaft 9, the bearing plate 2 is connected with the clutch shaft 9 to rotate synchronously, the outer friction plate 4 and the inner friction plate 5 are arranged between the bearing plate 2 and the pressure plate piston 7, the outer friction plate 4 and the shell 1 rotate synchronously, the inner friction plate 5 and the bearing plate 2 rotate synchronously, an oil cavity 19 for introducing pressure oil is arranged between the pressure plate piston 7 and the oil cavity seat 8, a plurality of transmission gears are sleeved on the clutch shaft 9, a gear bearing is arranged between the transmission gears and the clutch shaft 9, an oil sealing bush 15 and an end cover 14 are sleeved at the rear end of the clutch shaft 9, the end cover 14 is fixedly connected with the box body 13, a pressure oil channel 903 is arranged in the clutch shaft 9, a first lubricating oil channel 904 and a second lubricating oil channel 905, wherein a first pressure oil groove 901 and a first lubricating oil groove 902 are arranged between the rear end of the clutch shaft 9 and the oil seal bush 15 in a front-back manner, a second pressure oil groove 1501 and a second lubricating oil groove 1502 are arranged between the oil seal bush 15 and the end cover 14 in a front-back manner, one side of the pressure oil channel 903 is communicated with the oil cavity 19, the other side of the pressure oil channel 903 is communicated with the first pressure oil groove 901 and the second pressure oil groove 1501, one side of the first lubricating oil channel 904 is communicated with a gear bearing between the transmission gear and the clutch shaft 9, the other side of the first lubricating oil channel 904 is communicated with the first lubricating oil groove 902 and the second lubricating oil groove 1502, one side of the second lubricating oil channel 905 is communicated with a gap between the pressure plate 2 and the pressure plate piston 7, and the other side of the second lubricating oil channel 905 is communicated with a gap between the rear end face of the clutch shaft 9 and the end cover 14; the end cover 14 is provided with a central hole 1407, a pressure oil hole 1403, a first lubricating oil hole 1404 and a second lubricating oil hole 1405, the central hole 1407 is internally provided with an oil seal bush 15 and the rear end part of the clutch shaft 9, the pressure oil hole 1403 is connected with an external pressure oil path, the second lubricating oil hole 1405 is connected with the external lubricating oil path, the first lubricating oil hole 1404 is connected with the second lubricating oil hole 1405 through the automatic regulating valve 410, and pressure oil passes through the automatic regulating valve 410 and switches on and off the automatic regulating valve 410: when the clutch does not work, no pressure oil exists in the pressure oil hole 1403, lubricating oil passes through the second lubricating oil hole 1405, the lubricating oil lubricates the clutch through the second lubricating oil hole 1405 and the second lubricating oil channel 905, the automatic regulating valve 410 is closed, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are not communicated, and a gear bearing connected with the rear end of the clutch is not lubricated by the lubricating oil because of being motionless; when the clutch works, pressure oil enters the pressure oil hole 1403, the automatic regulating valve 410 is opened, the first lubricating oil hole 1404 is communicated with the second lubricating oil hole 1405, lubricating oil lubricates the clutch through the second lubricating oil hole 1405 and the second lubricating oil channel 905, and the lubricating oil lubricates a gear bearing connected with the rear end of the clutch through the first lubricating oil hole 1404, the second lubricating oil groove 1502, the first lubricating oil groove 902 and the first lubricating oil channel 904.
Preferably, the clutch shaft 9 is sleeved with a transmission gear A10 and a transmission gear B12, and a gear sleeve 11 is arranged between the two transmission gears.
Preferably, the gear bearings are needle bearings, the transmission gear a10 is rotatably attached to the clutch shaft 9 by a needle bearing a17, the transmission gear B12 is rotatably attached to the clutch shaft 9 by a needle bearing B16, and the clutch shaft 9 is attached to the housing 13 by a plurality of tapered roller bearings 18.
Preferably, the self-regulating valve 410 comprises a valve cavity 1402 arranged on the end cover 14, a valve core 22 and a spring B21 are arranged in the valve cavity 1402, a spring B21 abuts against the valve core 22 and is enclosed in the valve cavity 1402 by a screw plug 23, and the valve core 22 can slide in the valve cavity 1402 and is reset by a spring B21; the valve spool 22 is provided with a third pressure oil groove 2201 and a third lubricating oil groove 2202 which are separated from each other, the third pressure oil groove 2201 is communicated with the pressure oil hole 1403, and the valve spool 22 has at least two position states: when the pressure oil hole 1403 is not connected with pressure oil, the clutch does not work, the valve core 22 is in a first position state under the action of the spring B21, at the moment, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are blocked by the valve core 22, and lubricating oil passes through the second lubricating oil hole 1405 but does not enter the first lubricating oil hole 1404; when the pressure oil hole 1403 is connected with pressure oil, the clutch works, the pressure oil pushes the valve core 22 to slide to a second position state, at this time, the third lubricating oil groove 2202 on the valve core 22 conducts the first lubricating oil hole 1404 and the second lubricating oil hole 1405, the lubricating oil lubricates the clutch through the second lubricating oil hole 1405, and the lubricating oil lubricates the gear bearing through the first lubricating oil hole 1404.
Preferably, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are respectively located on two sides of the valve spool 22 and are arranged in a staggered manner, and the second lubricating oil hole 1405 is always communicated with the third lubricating oil groove 2202.
Preferably, one end of the spring B21 abuts against the bottom of the valve chamber 1402, the other end of the spring B21 abuts against the valve body 22, the valve body 22 abuts against the plug screw 23, and the spring B21 gives the valve body 22 a tendency to approach the plug screw 23.
Preferably, the wall of the chamber near the bottom of the valve chamber 1402 is provided with a vent 1406, the inner side of the end cap 14 is provided with a flange 1408 in the form of an open ring, the flange 1408 surrounds the central hole 1407, and the vent 1406 opens on the step between the central hole 1407 and the flange 1408.
Preferably, the second lubricating oil hole 1405 penetrates to the bottom of the center hole 1407 to communicate with the second lubricating oil passage 905 on the clutch shaft 9, and the pressure oil hole 1403 and the first lubricating oil hole 1404 penetrate to the circumferential side wall of the center hole 1407 of the end cover 14, respectively, and are offset from each other.
Preferably, the first pressure oil groove 901 and the first lubricating oil groove 902 are two annular grooves arranged on the outer peripheral surface of the rear end of the clutch shaft 9, respectively, the first pressure oil groove 901 communicates with the pressure oil passage 903 through a radial hole, and the first lubricating oil groove 902 communicates with the first lubricating oil passage 904 through a radial hole; the second pressure oil groove 1501 and the second lubricating oil groove 1502 are two annular grooves arranged on the outer peripheral surface of the oil seal bushing 15, respectively, the second pressure oil groove 1501 is communicated with the first pressure oil groove 901 through a radial hole, and the second lubricating oil groove 1502 is communicated with the first lubricating oil groove 902 through a radial hole.
An end cover for a clutch as described above, the end cover 14 is provided with a center hole 1407, a pressure oil hole 1403, a first lubricating oil hole 1404 and a second lubricating oil hole 1405, an oil seal bushing 15 and a rear end portion of a clutch shaft 9 are provided in the center hole 1407, the pressure oil hole 1403 is connected to an external pressure oil path, the second lubricating oil hole 1405 is connected to an external lubricating oil path, the first lubricating oil hole 1404 is connected to the second lubricating oil hole 1405 through an automatic regulating valve 410, and pressure oil passes through the automatic regulating valve 410 and switches the automatic regulating valve 410: when the clutch does not work, no pressure oil exists in the pressure oil hole 1403, lubricating oil passes through the second lubricating oil hole 1405, the lubricating oil lubricates the clutch through the second lubricating oil hole 1405 and the second lubricating oil channel 905, the automatic regulating valve 410 is closed, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are not communicated, and a gear bearing connected with the rear end of the clutch is not lubricated by the lubricating oil because of being motionless; when the clutch works, pressure oil enters the pressure oil hole 1403, the automatic regulating valve 410 is opened, the first lubricating oil hole 1404 is communicated with the second lubricating oil hole 1405, lubricating oil lubricates the clutch through the second lubricating oil hole 1405 and the second lubricating oil channel 905, and the lubricating oil lubricates a gear bearing connected with the rear end of the clutch through the first lubricating oil hole 1404, the second lubricating oil groove 1502, the first lubricating oil groove 902 and the first lubricating oil channel 904.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the lubricating structure capable of automatically adjusting the lubricating oil amount is arranged, the communication of different lubricating oil paths is controlled through the pressure oil path, when the clutch does not work, the gear bearing connected with the rear end of the clutch is not lubricated by the lubricating oil, so that the lubricating oil amount requirement on the system is reduced, the energy-saving purpose is achieved, the lubricating oil distribution of the transmission system is more reasonable through the lubricating structure, the total lubricating oil amount requirement on the transmission system is reduced, and the purposes of energy conservation and emission reduction are achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic view of the structure of the clutch.
Fig. 2 is one of perspective views of the end cap.
Fig. 3 is a second perspective view of the end cap.
Fig. 4 is a schematic structural view of the end cap.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a right side view of fig. 4.
Fig. 7 is a sectional view a-a of fig. 4.
Fig. 8 is a sectional view B-B of fig. 5.
Fig. 9 is a cross-sectional view C-C of fig. 5.
Fig. 10 is a cross-sectional view D-D of fig. 5.
FIG. 11 is a schematic diagram of the configuration of the self-regulating valve on the end cap.
FIG. 12 is a schematic diagram of the transmission principle of the clutch.
Fig. 13 is a hydraulic schematic diagram of the oil system.
Wherein, 1, a shell; 2. a pressure bearing plate; 3. a wave spring; 4. an outer friction plate; 5. an inner friction plate; 6. a spring A; 7. a platen piston; 8. an oil cavity seat; 9. a clutch shaft; 901. a first pressure sump; 902. a first lubricating oil groove; 903. a pressure oil passage; 904. a first lubricant passage; 905. a second lubricant passage; 10. a transmission gear A; 11. a gear sleeve; 12. a transmission gear B; 13. a box body; 14. an end cap; 1401. bolt holes; 1402. a valve cavity; 1403. a pressure oil hole; 1404. a first lubricating oil hole; 1405. a second lubricant hole; 1406. a vent hole; 1407. a central bore; 1408. a flange; 15. an oil seal bushing; 1501. a second pressure sump; 1502. a second lubrication groove; 16. a needle bearing B; 17. a needle bearing A; 18. A tapered roller bearing; 19. an oil chamber; 20. a bolt; 21. a spring B; 22. a valve core; 2201. a third pressure sump; 2202. A third lubricating oil groove; 23. a plug screw; 31. a clutch; 32. a first gear sleeve shifting mechanism; 33. a first intermediate gear set; 34. a second intermediate gear set; 35. a second gear sleeve gear shifting mechanism; 401. an oil pump; 402. a filter; 403. a cold start pressure limiting valve; 404. a pressure switch; 405. a temperature sensor; 406. a pressure reducing valve; 407. a primary pressure valve; 408. a cooling valve; 409. a lubrication pressure limiting valve; 410. an automatic regulating valve; 411. a first lubricating oil passage; 412. a second lubrication oil passage; 413. a reversing valve.
Detailed Description
The invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, the singular is also intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and/or combinations thereof.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 and 12, a clutch comprises a housing 1, a bearing plate 2, an outer friction plate 4, an inner friction plate 5, a pressure plate piston 7, an oil cavity seat 8 and a clutch shaft 9, wherein the clutch shaft 9 is rotatably mounted on a box 13 through a bearing, the housing 1 is rotatably mounted at the front end of the clutch shaft 9 through a bearing, the bearing plate 2, the pressure plate piston 7 and the oil cavity seat 8 are sleeved on the clutch shaft 9, the bearing plate 2 and the clutch shaft 9 are connected through a spline and rotate synchronously, the outer friction plate 4 and the inner friction plate 5 are arranged between the bearing plate 2 and the pressure plate piston 7, the outer friction plate 4 and the housing 1 are circumferentially fixed and rotate synchronously, the inner friction plate 5 and the bearing plate 2 are circumferentially fixed and rotate synchronously, a spring wave 3 is arranged between adjacent inner friction plates 5 to facilitate friction plate resetting, a spring a6 is arranged between the bearing plate 2 and the pressure plate piston 7 to facilitate resetting of the pressure plate piston 7, an oil cavity 19 for introducing pressure oil is arranged between the pressure plate piston 7 and the oil cavity seat 8, a plurality of transmission gears are sleeved on the clutch shaft 9, gear bearings are arranged between the transmission gears and the clutch shaft 9, an oil sealing bush 15 and an end cover 14 are sleeved at the rear end of the clutch shaft 9, and the end cover 14 is fixedly connected with the box body 13.
In this embodiment, a pressure oil passage 903 is provided in the clutch shaft 9, a first lubricating oil channel 904 and a second lubricating oil channel 905, a first pressure oil groove 901 and a first lubricating oil groove 902 are arranged between the rear end of the clutch shaft 9 and the oil seal bush 15 in a front-back manner, a second pressure oil groove 1501 and a second lubricating oil groove 1502 are arranged between the oil seal bush 15 and the end cover 14 in a front-back manner, one side of the pressure oil channel 903 is communicated with the oil cavity 19, the other side of the pressure oil channel 903 is communicated with the first pressure oil groove 901 and the second pressure oil groove 1501, one side of the first lubricating oil channel 904 is communicated with a gear bearing between the transmission gear and the clutch shaft 9, the other side of the first lubricating oil channel 904 is communicated with the first lubricating oil groove 902 and the second lubricating oil groove 1502, one side of the second lubricating oil channel 905 is communicated with a gap between the pressure plate 2 and the pressure plate piston 7, and the other side of the second lubricating oil channel 905 is communicated with a gap between the rear end face of the clutch shaft 9 and the end cover 14.
In this embodiment, two transmission gears, i.e., a transmission gear a10 and a transmission gear B12, are sleeved on the clutch shaft 9, and a sleeve gear 11 is disposed between the two transmission gears, so as to form a first sleeve gear shift mechanism 32. The gear bearing is a needle bearing, the transmission gear a10 is rotatably attached to the clutch shaft 9 via a needle bearing a17, and the transmission gear B12 is rotatably attached to the clutch shaft 9 via a needle bearing B16. The clutch shaft 9 is attached to the case 13 via a plurality of tapered roller bearings 18.
In the present embodiment, as shown in fig. 12, the clutch shaft 9 of the clutch 31 is used as an input shaft, and is connected to an output shaft via the first sleeve gear shift mechanism 32, the first intermediate gear set 33, the second intermediate gear set 34, and the second sleeve gear shift mechanism 35. The clutch is mainly responsible for the power switching of the whole box, and no output exists when the box is not connected. When the clutch is required to work, pressure oil is connected, the clutch is connected and arranged to output working torque, and the gear shifting operation can be realized by mechanically operating the left and right switching of the subsequent gear sleeve, so that the total four gears are realized. In other embodiments, the clutch and the clutch shaft may be provided at an intermediate position of the entire transmission mechanism.
In this embodiment, as shown in fig. 2 to 10, a center hole 1407, a pressure oil hole 1403, a first lubricating oil hole 1404 and a second lubricating oil hole 1405 are provided in the end cap 14, an oil seal bushing 15 and a rear end portion of the clutch shaft 9 are provided in the center hole 1407, the pressure oil hole 1403 is connected to an external pressure oil path, the second lubricating oil hole 1405 is connected to an external lubricating oil path, the first lubricating oil hole 1404 is connected to the second lubricating oil hole 1405 through the self-regulating valve 410, and the pressure oil hole 1403 passes through the self-regulating valve 410 and opens and closes the self-regulating valve 410: when the clutch does not work, no pressure oil exists in the pressure oil hole 1403, the clutch is disengaged, lubricating oil passes through the second lubricating oil hole 1405, the lubricating oil lubricates the clutch through the second lubricating oil hole 1405 and the second lubricating oil channel 905, the automatic regulating valve 410 is closed, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are not communicated, and a gear bearing connected to the rear end of the clutch is not lubricated by the lubricating oil because of being motionless; when the clutch works, pressure oil enters the pressure oil hole 1403, the automatic regulating valve 410 is opened, the first lubricating oil hole 1404 is communicated with the second lubricating oil hole 1405, lubricating oil lubricates the clutch through the second lubricating oil hole 1405 and the second lubricating oil channel 905, and the lubricating oil lubricates a gear bearing connected with the rear end of the clutch through the first lubricating oil hole 1404, the second lubricating oil groove 1502, the first lubricating oil groove 902 and the first lubricating oil channel 904. Thus, a clutch lubricating structure for automatically adjusting the amount of lubricating oil is formed.
In this embodiment, as shown in fig. 11, the self-regulating valve 410 includes a valve cavity 1402 disposed on the end cap 14, a valve core 22 and a spring B21 are disposed in the valve cavity 1402, the spring B21 abuts against the valve core 22 and is enclosed in the valve cavity 1402 by a screw plug 23, the valve core 22 can slide in the valve cavity 1402 and is reset by the spring B21; the valve spool 22 is provided with a third pressure oil groove 2201 and a third lubricating oil groove 2202 which are separated from each other, the third pressure oil groove 2201 is communicated with the pressure oil hole 1403, and the valve spool 22 has at least two position states: when the pressure oil hole 1403 is not communicated with pressure oil, the clutch does not work, the valve core 22 is in a first position state under the action of the spring B21, at the moment, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are blocked by the valve core 22, lubricating oil lubricates the clutch through the second lubricating oil hole 1405, the lubricating oil does not enter the first lubricating oil hole 1404, and a gear bearing is not lubricated; when the pressure oil hole 1403 is communicated with pressure oil, the clutch works, the pressure oil pushes the valve core 22 to slide to a second position state, at this time, the spring B21 is compressed, the third lubricating oil groove 2202 on the valve core 22 communicates the first lubricating oil hole 1404 and the second lubricating oil hole 1405, lubricating oil lubricates the clutch through the second lubricating oil hole 1405, and lubricating oil lubricates the gear bearing through the first lubricating oil hole 1404.
In this embodiment, as shown in fig. 11, the first lubricating oil hole 1404 and the second lubricating oil hole 1405 are located on both sides of the valve spool 22 and are disposed in a staggered manner, and the second lubricating oil hole 1405 is always in communication with the third lubricating oil groove 2202. The arrangement is reasonable, the processing is convenient, the action is reliable, and the size of the end cover is small.
In the present embodiment, as shown in fig. 11, one end of the spring B21 abuts against the bottom of the valve chamber 1402, the other end of the spring B21 abuts against the valve body 22, the valve body 22 abuts against the plug screw 23, and the spring B21 gives the valve body 22 a tendency to approach the plug screw 23. In addition, as shown in fig. 6, and fig. 9 and 11, a vent 1406 is provided on the chamber wall near the bottom of the valve chamber 1402 to ensure that the valve core can slide in the valve chamber normally. The screw plug 23 is sleeved with a sealing washer.
In this embodiment, as shown in fig. 2 and 3, the end cover 14 is provided with a plurality of bolt holes 1401 for mounting bolts, the end cover 14 is fixed on the box body 13 through bolts 20 and a spring washer, and a sealing paper gasket is provided between the box body and the end cover 02 to ensure an oil sealing effect. The end cap 14 is provided with an open annular flange 1408 on the inside, the flange 1408 being disposed around the central aperture 1407 and the vent holes 1406 being open at the step between the central aperture 1407 and the flange 1408.
In the present embodiment, as shown in fig. 4 and fig. 7 and 8, the second lubricating oil hole 1405 penetrates to the bottom of the center hole 1407 to communicate with the second lubricating oil passage 905 on the clutch shaft 9. As shown in fig. 7, 9 and 10, the pressure oil hole 1403 and the first lubricating oil hole 1404 are respectively penetrated to the circumferential side wall of the center hole 1407 and are arranged in a staggered manner.
In this embodiment, the first pressure oil groove 901 and the first lubricating oil groove 902 are two annular grooves arranged on the outer peripheral surface of the rear end of the clutch shaft 9, respectively, the first pressure oil groove 901 is communicated with the pressure oil passage 903 through a radial hole, and the first lubricating oil groove 902 is communicated with the first lubricating oil passage 904 through a radial hole; the second pressure oil groove 1501 and the second lubricating oil groove 1502 are two annular grooves arranged on the outer peripheral surface of the oil seal bushing 15, respectively, the second pressure oil groove 1501 is communicated with the first pressure oil groove 901 through a radial hole, and the second lubricating oil groove 1502 is communicated with the first lubricating oil groove 902 through a radial hole.
The oil circuit system of the clutch, as shown in fig. 13, includes an oil pump 401, a filter 402, a cold start pressure limiting valve 403, a pressure reducing valve 406, a main pressure valve 407, a cooling valve 408, a lubricating pressure limiting valve 409, an automatic regulating valve 410, and a direction changing valve 413, the cold start pressure limiting valve 403, the pressure reducing valve 406, the main pressure valve 407, the reversing valve 413 and connecting pipelines thereof form an external pressure oil path, the external pressure oil path is further provided with a pressure switch 404 and a temperature sensor 405, the cooling valve 408, the lubricating pressure limiting valve 409 and connecting pipelines thereof form an external lubricating oil path, the automatic regulating valve 410 is arranged on the end cover 14, the input end of the automatic regulating valve 410 is connected with the external lubricating oil path, the output end of the automatic regulating valve 410 is connected with a first lubricating oil path 411 for lubricating a gear bearing and a second lubricating oil path 412 for lubricating a clutch, and the control end of the automatic regulating valve 410 is connected with the pressure oil path on the end cover 14; wherein the first lubricating oil passage 411 includes a first lubricating oil hole 1404, a second lubricating oil groove 1502, a first lubricating oil groove 902, and a first lubricating oil passage 904; the second lubricating oil path 412 is in a normally open state, mainly lubricates a clutch structure in the box body and comprises a second lubricating oil hole 1405 and a second lubricating oil channel 905, the first lubricating oil path 411 is connected with the second lubricating oil path 412 through the automatic regulating valve 410, and the pressure oil hole 1403, the second pressure oil groove 1501, the first pressure oil groove 901 and the oil cavity 19 form a clutch pressure oil path; the direction change valve 413 controls the pressure oil to enter the clutch 31, and the self-regulating valve 410 controls the self-regulating valve 410 to open or close according to the pressure of the clutch pressure oil path: as shown in fig. 13, when the reversing valve 413 is closed and the clutch does not work, the clutch pressure oil path has no pressure, the automatic regulating valve 410 is closed, the first lubricating oil path 411 and the second lubricating oil path 412 are not communicated, the external lubricating oil path only supplies oil to the second lubricating oil path 412 so as to lubricate the clutch only, and a gear bearing connected to the rear end of the clutch does not need lubricating oil lubrication because the gear bearing is not moved; when the reversing valve 413 is opened and the clutch works, pressure oil in a pressure oil path of the clutch pushes the valve core 22 in the automatic regulating valve 410 to slide, the automatic regulating valve 410 is opened, the first lubricating oil path 411 and the second lubricating oil path 412 are communicated, and the external lubricating oil path simultaneously supplies oil to the first lubricating oil path 411 and the second lubricating oil path 412, so that the clutch and a gear bearing connected with the rear end of the clutch are lubricated.
The gear bearing is not limited to the bearing to which the transmission gear is attached, and may include other bearings attached to the clutch shaft, such as the bearing 18 attached between the clutch shaft 9 and the case 13.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "one implementation," "a specific implementation," "other implementations," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment, implementation, or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described above may also be combined in any suitable manner in any one or more of the embodiments, examples, or examples. The invention also includes any one or more of the specific features, structures, materials, or characteristics described above, taken alone or in combination.
Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art can make changes, modifications, substitutions, variations, deletions, additions or rearrangements of features and elements within the scope of the invention without departing from the spirit and scope of the invention.
Claims (10)
1. A clutch comprises a shell (1), a bearing plate (2), an outer friction plate (4), an inner friction plate (5), a pressure plate piston (7), an oil cavity seat (8) and a clutch shaft (9), wherein the clutch shaft (9) is rotatably arranged on a box body (13), the shell (1) is rotatably arranged at the front end of the clutch shaft (9), the bearing plate (2), the pressure plate piston (7) and the oil cavity seat (8) are sleeved on the clutch shaft (9), the bearing plate (2) is connected with the clutch shaft (9) to rotate synchronously, the outer friction plate (4) and the inner friction plate (5) are arranged between the bearing plate (2) and the pressure plate piston (7), the outer friction plate (4) and the shell (1) rotate synchronously, the inner friction plate (5) and the bearing plate (2) rotate synchronously, an oil cavity (19) for introducing pressure oil is arranged between the pressure plate piston (7) and the oil cavity seat (8), the transmission oil lubricating device is characterized in that a pressure oil channel (903), a first lubricating oil channel (904) and a second lubricating oil channel (905) are arranged in the clutch shaft (9), a first pressure oil groove (901) and a first lubricating oil groove (902) are arranged between the rear end of the clutch shaft (9) and the oil sealing bush (15) in the front and back direction, a second pressure oil groove (1501) and a second lubricating oil groove (1502) are arranged between the oil sealing bush (15) and the end cover (14) in the front and back direction, one side of the pressure oil channel (903) is communicated with the oil cavity (19), the other side of the pressure oil channel (903) is communicated with the first pressure oil groove (901) and the second pressure oil groove (1501), one side of a first lubricating oil channel (904) is communicated with a gear bearing between the transmission gear and the clutch shaft (9), the other side of the first lubricating oil channel (904) is communicated with a first lubricating oil groove (902) and a second lubricating oil groove (1502), one side of a second lubricating oil channel (905) is communicated with a gap between the pressure plate (2) and the pressure plate piston (7), and the other side of the second lubricating oil channel (905) is communicated with a gap between the rear end face of the clutch shaft (9) and the end cover (14); be equipped with centre bore (1407) on end cover (14), pressure oilhole (1403), first lubricated oil hole (1404) and second lubricated oil hole (1405), set up the rear end portion of sealing oil bush (15) and clutch shaft (9) in centre bore (1407), pressure oilhole (1403) are connected with external pressure oil circuit, second lubricated oil hole (1405) are connected with external lubricated oil circuit, first lubricated oil hole (1404) are connected with second lubricated oil hole (1405) through automatically regulated valve (410), and pressure oil is through this automatically regulated valve (410) and switch automatically regulated valve (410): when the clutch does not work, no pressure oil exists in the pressure oil hole (1403), lubricating oil passes through the second lubricating oil hole (1405), the lubricating oil lubricates the clutch through the second lubricating oil hole (1405) and the second lubricating oil channel (905), the automatic regulating valve (410) is closed, the first lubricating oil hole (1404) and the second lubricating oil hole (1405) are not communicated, and a gear bearing connected to the rear end of the clutch does not lubricate the lubricating oil because of being motionless; when the clutch works, pressure oil enters the pressure oil hole (1403), the automatic regulating valve (410) is opened, the first lubricating oil hole (1404) is communicated with the second lubricating oil hole (1405), lubricating oil lubricates the clutch through the second lubricating oil hole (1405) and the second lubricating oil channel (905), and the lubricating oil lubricates a gear bearing connected with the rear end of the clutch through the first lubricating oil hole (1404), the second lubricating oil groove (1502), the first lubricating oil groove (902) and the first lubricating oil channel (904).
2. A clutch according to claim 1, characterised in that the clutch shaft (9) is provided with a transmission gear a (10) and a transmission gear B (12) in a sleeve arrangement, between which a toothed sleeve (11) is provided.
3. A clutch according to claim 2, characterized in that the gear bearings are needle bearings, the transmission gear a (10) is rotatably mounted on the clutch shaft (9) by means of a needle bearing a (17), the transmission gear B (12) is rotatably mounted on the clutch shaft (9) by means of a needle bearing B (16), and the clutch shaft (9) is mounted on the housing (13) by means of a plurality of tapered roller bearings (18).
4. A clutch according to claim 1, characterized in that the self-regulating valve (410) comprises a valve chamber (1402) arranged on the end cover (14), a valve core (22) and a spring B (21) are arranged in the valve chamber (1402), the spring B (21) is abutted against the valve core (22) and is enclosed in the valve chamber (1402) by a screw plug (23), the valve core (22) can slide in the valve chamber (1402) and is reset by the spring B (21); the valve core (22) is provided with a third pressure oil groove (2201) and a third lubricating oil groove (2202) which are separated from each other, the third pressure oil groove (2201) is communicated with the pressure oil hole (1403), and the valve core (22) has at least two position states: when the pressure oil hole (1403) is not communicated with pressure oil, the clutch does not work, the valve core (22) is in a first position state under the action of a spring B (21), at the moment, the first lubricating oil hole (1404) and the second lubricating oil hole (1405) are blocked by the valve core (22), and lubricating oil passes through the second lubricating oil hole (1405) but does not enter the first lubricating oil hole (1404); when the pressure oil hole (1403) is communicated with pressure oil, the clutch works, the pressure oil pushes the valve core (22) to slide to a second position state, at the moment, a third lubricating oil groove (2202) in the valve core (22) conducts the first lubricating oil hole (1404) and the second lubricating oil hole (1405), lubricating oil lubricates the clutch through the second lubricating oil hole (1405), and lubricating oil lubricates the gear bearing through the first lubricating oil hole (1404).
5. A clutch according to claim 4, characterized in that the first oil hole (1404) and the second oil hole (1405) are respectively located on both sides of the valve spool (22) and are arranged in a staggered manner, and the second oil hole (1405) is always communicated with the third oil groove (2202).
6. A clutch according to claim 4, characterized in that the spring B (21) has one end against the bottom of the valve chamber (1402), the other end of the spring B (21) against the spool (22), the spool (22) against the plug screw (23) and the spring B (21) gives the spool (22) a tendency to approach the plug screw (23).
7. A clutch according to claim 4 in which the wall of the chamber near the bottom of the chamber (1402) is provided with a vent hole (1406) and the end cap (14) is provided on the inside with an annular flange (1408) which is open, the flange (1408) being disposed around the central bore (1407) and the vent hole (1406) opening onto the step between the central bore (1407) and the flange (1408).
8. A clutch according to claim 4, characterized in that the second lubricating oil hole (1405) penetrates to the bottom of the center hole (1407) to communicate with the second lubricating oil passage (905) on the clutch shaft (9), and the pressure oil hole (1403) and the first lubricating oil hole (1404) penetrate to the circumferential side wall of the center hole (1407) of the end cover (14), respectively, and are arranged offset from each other.
9. A clutch according to claim 4, characterized in that the first pressure oil groove (901) and the first lubricating oil groove (902) are respectively a front and a rear two annular grooves provided on the outer peripheral surface of the rear end of the clutch shaft (9), the first pressure oil groove (901) communicates with the pressure oil passage (903) through a radial hole, and the first lubricating oil groove (902) communicates with the first lubricating oil passage (904) through a radial hole; the second pressure oil groove (1501) and the second lubricating oil groove (1502) are respectively a front annular groove and a rear annular groove which are arranged on the outer peripheral surface of the oil sealing bush (15), the second pressure oil groove (1501) is communicated with the first pressure oil groove (901) through radial holes, and the second lubricating oil groove (1502) is communicated with the first lubricating oil groove (902) through radial holes.
10. An end cover for a clutch according to any one of claims 1 to 9, characterized in that the end cover (14) is provided with a center hole (1407), a pressure oil hole (1403), a first lubricating oil hole (1404) and a second lubricating oil hole (1405), an oil seal bushing (15) and a rear end portion of the clutch shaft (9) are provided in the center hole (1407), the pressure oil hole (1403) is connected to an external pressure oil passage, the second lubricating oil hole (1405) is connected to an external lubricating oil passage, the first lubricating oil hole (1404) is connected to the second lubricating oil hole (1405) through an automatic regulating valve (410), and pressure oil passes through the automatic regulating valve (410) and opens and closes the automatic regulating valve (410): when the clutch does not work, no pressure oil exists in the pressure oil hole (1403), lubricating oil passes through the second lubricating oil hole (1405), the lubricating oil lubricates the clutch through the second lubricating oil hole (1405) and the second lubricating oil channel (905), the automatic regulating valve (410) is closed, the first lubricating oil hole (1404) and the second lubricating oil hole (1405) are not communicated, and a gear bearing connected to the rear end of the clutch does not lubricate the lubricating oil because of being motionless; when the clutch works, pressure oil enters the pressure oil hole (1403), the automatic regulating valve (410) is opened, the first lubricating oil hole (1404) is communicated with the second lubricating oil hole (1405), lubricating oil lubricates the clutch through the second lubricating oil hole (1405) and the second lubricating oil channel (905), and the lubricating oil lubricates a gear bearing connected with the rear end of the clutch through the first lubricating oil hole (1404), the second lubricating oil groove (1502), the first lubricating oil groove (902) and the first lubricating oil channel (904).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010825462.2A CN112013039B (en) | 2020-08-17 | 2020-08-17 | Clutch and end cover thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010825462.2A CN112013039B (en) | 2020-08-17 | 2020-08-17 | Clutch and end cover thereof |
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| CN112013039B true CN112013039B (en) | 2021-12-28 |
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