阅读说明：本技术 一种离合器自适应润滑系统 (Self-adaptive lubricating system of clutch ) 是由 严鉴铂 刘义 邱辉鹏 张海涛 王子龙 向权力 吉丹霞 张笑 于 2019-09-25 设计创作，主要内容包括：本发明属于离合器领域,公开了一种离合器自适应润滑系统,包括压力油道、活塞腔体和润滑油道；压力油道一端通过压力油控制装置连接压力油源,另一端连接活塞腔体；活塞腔体内设置能够滑动的活塞,活塞与活塞腔体内壁油密连接,活塞将活塞腔体内部分割为第一空腔和第二空腔,第一空腔的侧壁上开设与压力油道连接的压力油孔,第二空腔内设置复位弹簧,复位弹簧一端连接活塞,另一端连接活塞腔体内壁,且活塞连接复位弹簧的一端连接离合器；润滑油道一端通过润滑油控制装置连接润滑油源,另一端连接离合器,且润滑油道连接离合器的一端上开设若干润滑油孔。本发明实现了离合器润滑与离合器投入工作永远同步,最大程度地降低了拖曳损失。(The invention belongs to the field of clutches, and discloses a self-adaptive lubricating system of a clutch, which comprises a pressure oil passage, a piston cavity and a lubricating oil passage; one end of the pressure oil duct is connected with a pressure oil source through a pressure oil control device, and the other end of the pressure oil duct is connected with the piston cavity; a piston capable of sliding is arranged in a piston cavity, the piston is in oil-tight connection with the inner wall of the piston cavity, the piston divides the interior of the piston cavity into a first cavity and a second cavity, a pressure oil hole connected with a pressure oil duct is formed in the side wall of the first cavity, a return spring is arranged in the second cavity, one end of the return spring is connected with the piston, the other end of the return spring is connected with the inner wall of the piston cavity, and one end of the piston connected with the return spring is connected with a clutch; one end of the lubricating oil channel is connected with a lubricating oil source through a lubricating oil control device, the other end of the lubricating oil channel is connected with the clutch, and one end of the lubricating oil channel, which is connected with the clutch, is provided with a plurality of lubricating oil holes. The invention realizes the permanent synchronization of the lubrication of the clutch and the operation of the clutch, and reduces the dragging loss to the maximum extent.)

1. A self-adaptive lubricating system of a clutch is characterized by comprising a pressure oil passage (15), a piston cavity (1) and a lubricating oil passage (8);

one end of the pressure oil duct (15) is connected with a pressure oil source through a pressure oil control device, and the other end of the pressure oil duct is connected with the piston cavity (1); a piston (2) capable of sliding is arranged in a piston cavity (1), the piston (2) is in oil-tight connection with the inner wall of the piston cavity (1), the piston (2) divides the interior of the piston cavity (1) into a first cavity and a second cavity, a pressure oil hole connected with a pressure oil duct (15) is formed in the side wall of the first cavity, a reset spring (3) is arranged in the second cavity, one end of the reset spring (3) is connected with the piston (2), the other end of the reset spring is connected with the inner wall of the piston cavity (1), and one end, connected with the reset spring (3), of the piston (2) is connected with a clutch; one end of the lubricating oil channel (8) is connected with a lubricating oil source through a lubricating oil control device, the other end of the lubricating oil channel is connected with the clutch, and a plurality of lubricating oil holes (9) are formed in one end, connected with the clutch, of the lubricating oil channel (8);

when the pressure oil control device is opened, the piston (2) moves towards the second cavity, the clutch starts to work, the lubricating oil control device is opened, and lubricating oil enters the clutch through the lubricating oil hole (9) for lubrication;

when the pressure oil control device is closed, the piston (2) moves towards the first cavity, the clutch stops working, and the lubricating oil control device is closed.

2. The clutch adaptive lubrication system according to claim 1, wherein the pressure oil control means comprises a solenoid valve (11) and a TCU controller (10);

the electromagnetic valve (11) is arranged on the pressure oil duct (15) and connected with the TCU controller (10), and the opening and closing of the electromagnetic valve (11) are controlled through the TCU controller (10).

3. The system for adaptive lubrication of a clutch according to claim 1, wherein the pressure oil control device is a manual control valve provided on a lubrication oil passage (8).

4. The adaptive clutch lubrication system according to claim 1, wherein one end of the lubricating oil passage (8) connected with the clutch extends into the interior of the clutch.

5. The adaptive clutch lubrication system according to claim 1, wherein the lubrication oil passage (8) is connected to one end of the clutch and the clutch end.

6. The clutch adaptive lubrication system according to claim 1, wherein the lubricating oil control means includes a lubricating control valve (5) and a pilot control lever (4) that controls the opening and closing of the lubricating control valve (5); one end of the pilot control rod (4) is connected with the piston (2), the other end of the pilot control rod is connected with the lubrication control valve (5), and the lubrication control valve (5) is arranged on the lubricating oil channel (8);

when the pressure oil control device is opened, the piston (2) moves towards the second cavity to drive the pilot control rod (4) to open the lubrication control valve (5); when the pressure oil control device is closed, the piston (2) moves towards the first cavity to drive the pilot control rod (4) to close the lubrication control valve (5).

7. Clutch adaptive lubrication system according to claim 6, characterized in that the lubrication control valve (5) is a two-position, two-way valve.

8. The adaptive clutch lubrication system according to claim 1, wherein the lubricating oil control means comprises a piston skirt (201) provided on one end of the piston (2) and a step (101) provided on the piston cavity (1); a lubricating oil through hole (12) is formed in the area where the piston cavity (1) is connected with the piston (2), a lubricating oil channel for communicating the lubricating oil through hole (12) with the piston skirt portion (201) is arranged between the piston (2) and the inner wall of the piston cavity (1), one end, far away from the piston (2), of the lubricating oil through hole (12) is connected with a lubricating oil source, and a lubricating oil channel (8) is connected with the lubricating oil channel;

when the pressure oil control device is opened, the piston (2) moves towards the second cavity, the side surface of the piston skirt part (201) is separated from the step surface of the step (101), and lubricating oil enters the lubricating oil channel (8) through the lubricating oil channel; when the pressure oil control device is closed, the piston (2) moves towards the first cavity until the side surface of the piston skirt part (201) is attached to the step surface of the step (101).

9. The adaptive clutch lubrication system according to claim 1, wherein the lubrication control device is three lubrication control orifices; the piston cavity (1) is formed by matching a clutch inner hub (13) and a power shaft (14), a first lubricating oil control hole (16) is formed in the area, which is in contact with the piston (2), of the power shaft (14), a second lubricating oil control hole (17) is formed in the piston (2), the second lubricating oil control hole (17) is communicated with the second cavity, a third lubricating oil control hole is formed in the clutch inner hub (13), and the third lubricating oil control hole is connected with a lubricating oil channel (8);

when the pressure oil control device is opened, the piston (2) moves towards the second cavity, and the first lubricating oil control hole (16) is communicated with the second lubricating oil control hole (17); when the pressure oil control device is closed, the piston (2) moves towards the first cavity, and the first lubricating oil control hole (16) is separated from the second lubricating oil control hole (17).

Technical Field

The invention belongs to the field of clutches, and relates to a self-adaptive lubricating system of a clutch.

Background

The transmission utilizes wet clutches/brakes to operate with a large amount of heat generated and requiring cooling. At present, two cooling modes are generally adopted at home and abroad: one is the normal-style lubrication, i.e. the clutch/brake is cooled by the lubricating oil as long as the transmission is running; and the other is that a hole is directly formed on the clutch/brake piston, and high-pressure oil in the working oil cavity is used for cooling.

However, when the temperature is reduced by these two methods, the first method causes a large drag loss of the transmission, and the second method increases power consumption of an oil pump of the transmission, both of which reduce efficiency of the transmission.

Disclosure of Invention

The invention aims to overcome the defect that the efficiency of the transmission is reduced when a large amount of heat generated during the operation of a cooling clutch/brake in the prior art, and provides a clutch self-adaptive lubricating system.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

a self-adaptive lubricating system of a clutch comprises a pressure oil channel, a piston cavity and a lubricating oil channel;

one end of the pressure oil duct is connected with a pressure oil source through a pressure oil control device, and the other end of the pressure oil duct is connected with the piston cavity; a piston capable of sliding is arranged in a piston cavity, the piston is in oil-tight connection with the inner wall of the piston cavity, the piston divides the interior of the piston cavity into a first cavity and a second cavity, a pressure oil hole connected with a pressure oil duct is formed in the side wall of the first cavity, a return spring is arranged in the second cavity, one end of the return spring is connected with the piston, the other end of the return spring is connected with the inner wall of the piston cavity, and one end of the piston connected with the return spring is connected with a clutch; one end of the lubricating oil channel is connected with a lubricating oil source through a lubricating oil control device, the other end of the lubricating oil channel is connected with the clutch, and a plurality of lubricating oil holes are formed in one end, connected with the clutch, of the lubricating oil channel;

when the pressure oil control device is opened, the piston moves towards the second cavity, the clutch starts to work, the lubricating oil control device is opened, and lubricating oil enters the clutch through the lubricating oil hole for lubrication;

when the pressure oil control device is closed, the piston moves towards the first cavity, the clutch stops working, and the lubricating oil control device is closed.

The lubricating system of the invention is further improved in that:

the pressure oil control device comprises an electromagnetic valve and a TCU controller; the solenoid valve sets up on the pressure oil duct and is connected with the TCU controller, opens and closes through TCU controller control solenoid valve.

The pressure oil control device is a manual control valve which is arranged on the lubricating oil channel.

One end of the lubricating oil channel connected with the clutch extends into the clutch.

One end of the lubricating oil channel, which is connected with the clutch, is connected with the end part of the clutch.

The lubricating oil control device comprises a lubricating control valve and a pilot control rod for controlling the opening and closing of the lubricating control valve; one end of the pilot control rod is connected with the piston, the other end of the pilot control rod is connected with the lubricating control valve, and the lubricating control valve is arranged on the lubricating oil channel;

when the pressure oil control device is opened, the piston moves towards the second cavity to drive the pilot control rod to open the lubrication control valve; when the pressure oil control device is closed, the piston moves towards the first cavity to drive the pilot control rod to close the lubrication control valve.

The lubrication control valve is a two-position two-way valve.

The lubricating oil control device comprises a piston skirt part arranged on one end of the piston and a step arranged on the piston cavity; a lubricating oil through hole is formed in the area where the piston cavity is connected with the piston, a lubricating oil channel for communicating the lubricating oil through hole with the piston skirt is arranged between the piston and the inner wall of the piston cavity, one end, far away from the piston, of the lubricating oil through hole is connected with a lubricating oil source, and the lubricating oil channel is connected with the lubricating oil channel;

when the pressure oil control device is opened, the piston moves towards the second cavity, the side surface of the skirt portion of the piston is separated from the step surface of the step, and lubricating oil enters the lubricating oil channel through the lubricating oil channel; when the pressure oil control device is closed, the piston moves towards the first cavity until the side face of the skirt portion of the piston is attached to the step face of the step.

The lubricating oil control device is provided with three lubricating oil control holes; the piston cavity is formed by matching the clutch inner hub and the power shaft, a first lubricating oil control hole is formed in the area, in contact with the piston, of the power shaft, a second lubricating oil control hole is formed in the piston and communicated with the second cavity, a third lubricating oil control hole is formed in the clutch inner hub and connected with a lubricating oil channel;

when the pressure oil control device is opened, the piston moves towards the second cavity, and the first lubricating oil control hole is communicated with the second lubricating oil control hole; when the pressure oil control device is closed, the piston moves towards the first cavity, and the first lubricating oil control hole is separated from the second lubricating oil control hole.

Compared with the prior art, the invention has the following beneficial effects:

the clutch is connected with a pressure oil source through a pressure oil duct, a pressure oil control device is arranged on the pressure oil duct, the pressure oil control device controls the connection and the disconnection of the pressure oil duct, the piston moves under the pushing of pressure oil, the friction plate of the clutch is further pushed to be combined with the dual plate, and the clutch starts to work; the lubricating oil source and the clutch are connected through the lubricating oil channel, the lubricating oil control device is arranged on the lubricating oil channel, the lubricating oil channel is controlled to be communicated and blocked through the lubricating oil control device, when the piston is pushed by pressure oil, the piston simultaneously drives the lubricating oil control device to be opened, and then the clutch which is put into operation is lubricated and cooled, so that the clutch is lubricated and always synchronous with the clutch which is put into operation, the dragging loss is reduced to the maximum extent, the efficiency of the transmission is improved, and the oil consumption is reduced.

Further, the pressure oil control device can be a solenoid valve and a TCU controller, or a manual control valve, so that more design requirements can be met.

Furthermore, one end of the lubricating oil channel connected with the clutch extends into the clutch, or one end of the lubricating oil channel connected with the clutch is connected with the end part of the clutch, the lubricating oil channel can be arranged according to the specific structure of the clutch, and the space in the clutch is fully utilized.

Furthermore, lubricating oil controlling means includes lubricated control valve and pilot control pole, is connected with the piston through the pilot control pole, and then opens or close lubricated control valve under the drive of piston, simple structure easily realizes.

Furthermore, the lubricating oil control device does not need to be provided with additional parts and can be a structure on a piston and a piston cavity, the lubricating oil control device comprises a piston skirt part arranged at one end of the piston and a step arranged on the piston cavity, the communication and the blocking of a lubricating oil channel and a lubricating oil source are realized through the attachment and the separation of the piston skirt part and the step surface of the step, the lubricating oil quantity is realized through the separation degree of the piston skirt part and the step surface of the step, when the piston starts to displace, oil is immediately used for cooling the clutch, when the piston moves to the maximum displacement, the friction plate and the counter-plate start to transmit torque, the lubricating oil quantity entering the clutch also reaches the maximum, and the oil can take away heat generated by friction as soon as possible.

Furthermore, the lubricating oil control device does not need additional parts and can be a combination body of a piston and other clutch parts, the lubricating oil control device is provided with three lubricating oil control holes, a piston cavity is formed by matching a clutch inner hub and a power shaft, a first lubricating oil control hole is arranged on the power shaft in a contact area with the piston, a second lubricating oil control hole is arranged on the piston and communicated with a second cavity, a third lubricating oil control hole is arranged on the clutch inner hub and connected with a lubricating oil channel, when the piston moves, the first lubricating oil control hole and the second lubricating oil control hole are communicated and blocked, when the piston starts to move, the first lubricating oil control hole and the second lubricating oil control hole are communicated, oil is immediately used for cooling the clutch, when the piston moves to the maximum displacement, and when the friction plate and the counter plate start to transmit torque, the first lubricating oil control hole and the second lubricating oil control hole are communicated to reach the maximum opening, the amount of lubricating oil entering the clutch is also maximum, and the oil can take away heat generated by friction as soon as possible.

Drawings

FIG. 1 is a schematic diagram of a first lubrication mode of the adaptive clutch lubrication system of the present invention;

FIG. 2 is a schematic diagram of a second lubrication mode of the adaptive clutch lubrication system of the present invention;

FIG. 3 is a schematic view of a lubrication control apparatus of the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 3 according to the present invention;

fig. 5 is a schematic diagram of another lubrication control apparatus according to the present invention.

Wherein: 1-a piston chamber; 2-a piston; 3-a return spring; 4-a pilot control lever; 5-a lubrication control valve; 6-clutch friction plate; 7-clutch doublet; 8-lubricating oil channel; 9-lubricating oil holes; 10-TCU controller; 11-a solenoid valve; 12-a lube oil through hole; 13-clutch inner hub; 14-a power shaft; 15-pressure oil duct; 16-a first lube control orifice; 17-a second lube control orifice; 101-step; 201-piston skirt.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1, the self-adaptive lubricating system of the clutch of the invention comprises a pressure oil passage 15, a piston cavity 1 and a lubricating oil passage 8; one end of the pressure oil duct 15 is connected with a pressure oil source through a pressure oil control device, and the other end of the pressure oil duct is connected with the piston cavity 1; a slidable piston 2 is arranged in a piston cavity 1, the piston 2 is in oil-tight connection with the inner wall of the piston cavity 1, the piston 2 divides the interior of the piston cavity 1 into a first cavity and a second cavity, a pressure oil hole connected with a pressure oil duct 15 is formed in the side wall of the first cavity, a return spring 3 is arranged in the second cavity, one end of the return spring 3 is connected with the piston 2, the other end of the return spring is connected with the inner wall of the piston cavity 1, and one end of the piston 2 connected with the return spring 3 is connected with a clutch; one end of the lubricating oil channel 8 is connected with a lubricating oil source through a lubricating oil control device, the other end of the lubricating oil channel is connected with the clutch, and one end of the lubricating oil channel 8, which is connected with the clutch, is provided with a plurality of lubricating oil holes 9.

When the pressure oil control device is opened, the piston 2 moves towards the second cavity, the clutch starts to work, the lubricating oil control device is opened, and lubricating oil enters the clutch through the lubricating oil hole 9 for lubrication; when the pressure oil control device is closed, the piston 2 moves towards the first cavity, the clutch stops working, and the lubricating oil control device is closed.

The pressure oil control device comprises an electromagnetic valve 11 and a TCU controller 10, the electromagnetic valve 11 is arranged on the lubricating oil channel 8 and connected with the TCU controller 10, and the opening and closing of the electromagnetic valve 11 are controlled through the TCU controller 10. The pressure oil control device can also be set as a manual control valve which is arranged on the lubricating oil channel 8, and the communication and the blockage of the lubricating oil channel 8 are realized by manually controlling the opening and the closing of the manual control valve.

The way of lubricating the clutch can be that a hole is opened on the axial direction of the clutch lubricating oil channel 8, and oil is supplied to the radial direction by pressure and centrifugal force; referring to fig. 2, it is also possible to open at the clutch end, and the oil is led to the other end through the gap and the groove between the friction pair clutch disk 6 and the clutch counter disk 7.

The lubricating oil control device comprises a lubricating control valve 5 and a pilot control rod 4 for controlling the opening and closing of the lubricating control valve 5; one end of the pilot control rod 4 is connected with the piston 2, the other end of the pilot control rod is connected with the lubrication control valve 5, the lubrication control valve 5 is arranged on the lubricating oil channel 8, and the lubrication control valve 5 is a two-position two-way valve; when the pressure oil control device is opened, the piston 2 moves towards the second cavity to drive the pilot control rod 4 to open the lubrication control valve 5; when the pressure oil control device is closed, the piston 2 moves towards the first cavity, and drives the pilot control rod 4 to close the lubrication control valve 5.

Referring to fig. 3 and 4, the lubricating oil control device does not need additional parts and can be a structure on the piston 2 and the piston cavity 1, and the lubricating oil control device comprises a piston skirt 201 arranged on one end of the piston 2 and a step 101 arranged on the piston cavity 1; a lubricating oil through hole 12 is formed in the area where the piston cavity 1 is connected with the piston 2, a lubricating oil channel for communicating the lubricating oil through hole 12 with the piston skirt 201 is arranged between the piston 2 and the inner wall of the piston cavity 1, one end, far away from the piston 2, of the lubricating oil through hole 12 is connected with a lubricating oil source, and the lubricating oil channel 8 is connected with the lubricating oil channel; when the pressure oil control device is opened, the piston 2 moves towards the second cavity, the side surface of the skirt 201 of the piston is separated from the step surface of the step 101, lubricating oil enters the lubricating oil channel 8 through the lubricating oil channel, and when the piston 2 moves to the maximum displacement, the amount of the lubricating oil entering the clutch also reaches the maximum; when the pressure oil control device is closed, the piston 2 moves towards the first cavity until the side surface of the piston skirt 201 is attached to the step surface of the step 101, and the lubricating oil source is sealed.

Referring to fig. 5, the lubricating oil control device does not need additional parts and can be a combination of features on the piston 2 and other clutch parts, and the lubricating oil control device is three lubricating oil control holes; the piston cavity 1 is formed by matching a clutch inner hub 13 and a power shaft 14, a first lubricating oil control hole 16 is formed in the area, in contact with the piston 2, of the power shaft 14, a second lubricating oil control hole 17 is formed in the piston 2, the second lubricating oil control hole 17 is communicated with a second cavity, a third lubricating oil control hole is formed in the clutch inner hub 13, and the third lubricating oil control hole is connected with a lubricating oil channel 8; when the pressure oil control device is opened, the piston 2 moves towards the second cavity, and the first lubricating oil control hole 16 is communicated with the second lubricating oil control hole 17; when the pressure oil control device is closed, the piston 2 moves toward the first cavity, and the first lubrication oil control hole 16 is separated from the second lubrication oil control hole 17. The first and second lubricating oil control holes 16 and 17 are not communicated when the clutch is not operated, and when the piston 2 starts to move, the first and second lubricating oil control holes 16 and 17 start to communicate and gradually reach the maximum opening degree as the displacement of the piston 2 increases.

When the clutch works, the piston 2 pushes the clutch friction plate 6 and the clutch dual plate 7 to be combined under the action of pressure oil in the first cavity, the piston 2 is mechanically connected with the two-position two-way valve, when the piston 2 moves towards the second cavity, the two-position two-way valve is opened, lubricating oil enters the lubricating oil channel 8 and lubricates the clutch through a plurality of lubricating oil holes 9 formed in the lubricating oil channel. When the clutch quits to work, oil in the first cavity is communicated with the outside, the piston 2 moves towards the first cavity under the action of the reset spring 3, the valve two-position two-way valve is driven to be closed through the mechanical connection structure, at the moment, lubricating oil does not enter the lubricating oil channel 8 any more, and the oil dragging loss is reduced.

The invention realizes the permanent synchronization of the clutch lubrication and the clutch operation. When the clutch does not work, the oil does not cool and lubricate the clutch/brake any more, so that the dragging loss is reduced to the maximum extent, the efficiency of the transmission is improved, and the oil consumption is reduced. Once the first cavity starts to be filled with oil, when the clutch friction plate 6 and the clutch counter-piece 7 are about to contact, oil is immediately used for cooling the first cavity, when the clutch friction plate 6 and the clutch counter-piece 7 start to transmit torque, the amount of the lubricating oil reaches the maximum, and the oil can take away heat generated by friction as soon as possible.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.