阅读说明：本技术 一种amt变速器总成 (AMT transmission assembly ) 是由 严鉴铂 刘义 张海涛 高涛 高林峰 于 2019-09-29 设计创作，主要内容包括：一种AMT变速器总成,包括壳体、转轴、中间轴、倒挡换挡执行机构、滑动齿套和中间轴制动器；转轴、中间轴平行设置在壳体内,转轴上设置有若干滑动齿套,滑动齿套用于进行换挡；壳体内设置有倒挡换挡执行机构,中间轴的端部设置有中间轴制动器；中间轴上设置有中间轴齿轮,中间轴齿轮与中间轴过盈传递扭矩。本发明通过中间轴制动器主动降低中间轴转速,使高挡位齿轮转速降低到与滑动齿套接近时再挂入相应挡位,缩短同步时间,减少打齿及换挡冲击,提升换挡平顺性。(An AMT transmission assembly comprises a shell, a rotating shaft, an intermediate shaft, a reverse gear shifting actuating mechanism, a sliding gear sleeve and an intermediate shaft brake; the rotating shaft and the intermediate shaft are arranged in the shell in parallel, and the rotating shaft is provided with a plurality of sliding gear sleeves which are used for shifting gears; a reverse gear shifting actuating mechanism is arranged in the shell, and an intermediate shaft brake is arranged at the end part of the intermediate shaft; the intermediate shaft is provided with an intermediate shaft gear, and the intermediate shaft gear and the intermediate shaft are in interference fit to transmit torque. According to the invention, the rotation speed of the intermediate shaft is actively reduced through the intermediate shaft brake, so that the corresponding gear is engaged when the rotation speed of the high-gear is reduced to be close to the sliding gear sleeve, the synchronization time is shortened, the impact of gear beating and gear shifting is reduced, and the gear shifting smoothness is improved.)

1. An AMT transmission assembly is characterized by comprising a shell, a rotating shaft, an intermediate shaft (14), a reverse gear shifting actuating mechanism (8), a sliding gear sleeve (5) and an intermediate shaft brake (11); the rotating shaft and the intermediate shaft (14) are arranged in the shell in parallel, and the rotating shaft is provided with a plurality of sliding gear sleeves (5) for shifting gears; a reverse gear shifting actuating mechanism (8) is arranged in the shell, and an intermediate shaft brake (11) is arranged at the end part of the intermediate shaft; an intermediate shaft gear is arranged on the intermediate shaft (14), and the intermediate shaft gear and the intermediate shaft (14) are in interference fit for transmitting torque.

2. An AMT transmission assembly according to claim 1, wherein the housing comprises a clutch housing (2), a transmission housing (15) and a rear cover housing (7); the clutch shell (2), the transmission shell (15) and the rear cover shell (7) are sequentially connected to form a shell; the rotating shaft penetrates through the shell, and the intermediate shaft is arranged in the shell in parallel to the rotating shaft; the rotating shaft and the two ends of the intermediate shaft are connected through bearings.

3. An AMT transmission assembly according to claim 2, wherein the rotary shaft comprises an input shaft (1) and an output shaft (10); the input shaft (1) is connected with the output shaft (10) through a bearing, and the clutch actuator (17) is arranged on the outer side wall of the transmission shell (15) and connected with the clutch shell (2); an input speed measuring gear (3) is arranged on the input shaft (1), and an output speed measuring gear (9) is arranged on the output shaft (10).

4. An AMT transmission assembly according to claim 1, characterised in that the intermediate shaft brake (11) comprises an intermediate shaft (14), a counter plate (20), a brake cylinder head (21), a friction plate (22), a brake piston (23) and an intermediate shaft rear bearing cap (24); the intermediate shaft (14) is coaxially arranged in the intermediate shaft rear bearing cover (24), the intermediate shaft (14) is sleeved with a plurality of friction plates, and the plurality of dual plates and the friction plates are arranged at intervals; a brake cylinder cover is arranged on the side surface of the intermediate shaft rear bearing cover, and a brake piston is arranged in a space between the intermediate shaft rear bearing cover and the brake cylinder cover; a compression space is formed between the brake piston and the brake cylinder cover, and the brake cylinder cover is provided with an air inlet communicated with the compression space.

5. The AMT transmission assembly according to claim 4 wherein the end of the intermediate shaft is provided with an axial hole, a spring (25) is arranged in the axial hole, and a top cap (26) is sleeved on the spring (25); the geometric center of the brake piston is provided with a top pin (27), and a top cap (26) is pressed against the top pin (27); a cylindrical pin is arranged on the inner side wall of the rear bearing cover of the intermediate shaft, and the dual piece limits circular motion through the cylindrical pin; a sealing ring is arranged between the edge of the brake piston and the cylinder cover of the brake; an intermediate shaft (14) is disposed within the housing through a bearing.

6. An AMT transmission assembly according to claim 2, in which the reverse gear shift actuator (8) comprises a reverse shift rail (28), a reverse piston (29), a cylinder head (30) and an air inlet; the gearbox rear cover shell and the cylinder cover form a sealing structure, the reverse gear shifting fork shaft is arranged in the sealing structure, the reverse gear piston sleeve is arranged at the end of the reverse gear shifting fork shaft, the reverse gear piston separates the sealing structure into two chambers, air inlets are formed in the cylinder cover and the gearbox rear cover shell, and the two air inlets are respectively communicated with the two chambers.

7. The AMT transmission assembly according to claim 6 wherein O-ring seals are provided between the reverse piston (29) and the gearbox back cover housing, between the gearbox back cover housing and the reverse shift rail (28), and between the reverse piston (29) and the reverse shift rail (28); the cylinder cover (30) and the rear cover shell are sealed by adopting a gasket; the reverse gear piston (29) is fixed at the end part of the reverse gear shifting fork shaft (28) through a locking nut; the reverse gear shifting fork shaft is sleeved with a reverse gear shifting fork (31), and the reverse gear shifting fork is matched with a reverse gear sliding sleeve.

8. The AMT transmission assembly according to claim 2, wherein an operator assembly (4) and a reverse gear solenoid valve assembly (6) are provided outside the housing; a brake solenoid valve (16) is arranged on the side surface of the rear cover shell, an air filter regulator assembly (18) is connected to the left side of the transmission shell, and a controller (19) is connected to the right side of the transmission shell.

Technical Field

The invention belongs to the technical field of transmissions, and particularly relates to an AMT transmission assembly.

Background

The gear selecting and shifting executing mechanism of the automatic mechanical transmission comprises an electric control hydraulic type and an electric control electric type according to a provided power source; the electric control hydraulic actuator has high response speed, but has large hydraulic energy loss, low transmission efficiency, higher requirement of hydraulic components on processing precision, high sealing performance and high cost; the electric control electrodynamic type actuating mechanism is high in transmission efficiency and small in energy loss, but is complex in structure, large in occupied space and not beneficial to arrangement of the whole vehicle.

Disclosure of Invention

The present invention is directed to an AMT transmission assembly to solve the above problems.

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

an AMT transmission assembly comprises a shell, a rotating shaft, an intermediate shaft, a reverse gear shifting actuating mechanism, a sliding gear sleeve and an intermediate shaft brake; the rotating shaft and the intermediate shaft are arranged in the shell in parallel, and the rotating shaft is provided with a plurality of sliding gear sleeves which are used for shifting gears; a reverse gear shifting actuating mechanism is arranged in the shell, and an intermediate shaft brake is arranged at the end part of the intermediate shaft; the intermediate shaft is provided with an intermediate shaft gear, and the intermediate shaft gear and the intermediate shaft are in interference fit to transmit torque.

Further, the housing comprises a clutch housing, a transmission housing and a rear cover housing; the clutch shell, the transmission shell and the rear cover shell are sequentially connected to form a shell; the rotating shaft penetrates through the shell, and the intermediate shaft is arranged in the shell in parallel to the rotating shaft; the rotating shaft and the two ends of the intermediate shaft are connected through bearings.

Further, the rotating shaft comprises an input shaft and an output shaft; the input shaft is connected with the output shaft through a bearing, and the clutch actuator is arranged on the outer side wall of the transmission shell and connected with the clutch shell; an input speed measuring gear is arranged on the input shaft, and an output speed measuring gear is arranged on the output shaft.

Furthermore, the intermediate shaft brake comprises an intermediate shaft, a dual piece, a brake cylinder cover, a friction piece, a brake piston and an intermediate shaft rear bearing cover; the middle shaft is coaxially arranged in the middle shaft rear bearing cover, a plurality of friction plates are sleeved on the middle shaft, and a plurality of dual plates and the friction plates are arranged at intervals; a brake cylinder cover is arranged on the side surface of the intermediate shaft rear bearing cover, and a brake piston is arranged in a space between the intermediate shaft rear bearing cover and the brake cylinder cover; a compression space is formed between the brake piston and the brake cylinder cover, and the brake cylinder cover is provided with an air inlet communicated with the compression space.

Further, an axial hole is formed in the end portion of the intermediate shaft, a spring is arranged in the axial hole, and a top cap is sleeved on the spring; a top pin is arranged at the geometric center of the brake piston, and a top cap is propped against the top pin; a cylindrical pin is arranged on the inner side wall of the rear bearing cover of the intermediate shaft, and the dual piece limits circular motion through the cylindrical pin; a sealing ring is arranged between the edge of the brake piston and the cylinder cover of the brake; the intermediate shaft is arranged in the shell through a bearing.

Furthermore, the reverse gear shifting actuating mechanism comprises a reverse gear shifting fork shaft, a reverse gear piston, a cylinder cover and an air inlet; the gearbox rear cover shell and the cylinder cover form a sealing structure, the reverse gear shifting fork shaft is arranged in the sealing structure, the reverse gear piston sleeve is arranged at the end of the reverse gear shifting fork shaft, the reverse gear piston separates the sealing structure into two chambers, air inlets are formed in the cylinder cover and the gearbox rear cover shell, and the two air inlets are respectively communicated with the two chambers.

Furthermore, O-shaped sealing rings are arranged between the reverse gear piston and a gearbox rear cover shell, between the gearbox rear cover shell and a reverse gear shifting fork shaft and between the reverse gear piston and the reverse gear shifting fork shaft; the cylinder cover and the rear cover shell are sealed by adopting a gasket; the reverse gear piston is fixed at the end part of the reverse gear shifting fork shaft through a locking nut; the reverse gear shifting fork shaft is sleeved with a reverse gear shifting fork, and the reverse gear shifting fork is matched with a reverse gear sliding sleeve.

Furthermore, an operating device assembly and a reverse gear electromagnetic valve assembly are arranged on the outer side of the shell; a brake electromagnetic valve is arranged on the side face of the rear cover shell, the air filtering regulator assembly is connected to the left side of the transmission shell, and the controller is connected to the right side of the transmission shell.

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

according to the invention, the rotation speed of the intermediate shaft is actively reduced through the intermediate shaft brake, so that the corresponding gear is engaged when the rotation speed of the high-gear is reduced to be close to the sliding gear sleeve, the synchronization time is shortened, the impact of gear beating and gear shifting is reduced, and the gear shifting smoothness is improved.

The speed measuring gears are respectively arranged on the input shaft and the output shaft to acquire more accurate rotating speed signals

The clutch actuator is arranged on the left side of the transmission shell and connected with the clutch shell, the air filter regulator assembly is connected to the left side of the transmission shell, and the controller is connected to the right side of the transmission shell, so that the structure is compact;

the operating device assembly is arranged on the upper part of the transmission shell and can share one set of operating device assembly with other torque stages AMT, so that the universality of parts is improved, and the cost is reduced.

The reverse gear electromagnetic valve assembly is arranged on the upper part of the rear cover shell, the structure is compact, the integration level is high, and the cost is lower

The AMT assembly comprises three sections of shells, namely a clutch shell, a transmission shell and a rear cover shell, wherein the clutch shell independently plays a role in connecting an engine and a transmission, the clutch shell can be replaced according to different matching requirements, and parts in the transmission shell and the rear cover shell are kept unchanged.

Drawings

FIG. 1 is a schematic diagram of an AMT transmission structure;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic view of a reverse pneumatic shift actuator;

FIG. 5 is a detail view at A;

FIG. 6 is a construction view of the intermediate shaft brake;

FIG. 7 is a schematic view of the electro-pneumatic operation of the present invention;

1. the automatic transmission comprises an input shaft 2, a clutch shell 3, an input speed measuring gear 4, an operating device assembly 5, a sliding gear sleeve 6, a reverse gear electromagnetic valve assembly 7, a rear cover shell 8, a reverse gear shifting actuating mechanism 9, an output speed measuring gear 10, an output shaft 11, an intermediate shaft brake 12, a main shaft rear bearing cover 13, a reverse gear intermediate shaft 14, an intermediate shaft 15, a transmission shell 16, a brake electromagnetic valve 17, a clutch actuator 18, an air filtering regulator assembly 19, a controller 20 and a dual plate; 21. a brake cylinder head; 22. a friction plate; 23. a brake piston; 24. a rear bearing cover of the intermediate shaft; 25. a spring; 26. a top cap; 27. a knock pin; 28. a reverse shift fork shaft; 29. a reverse gear piston; 30. a cylinder head; 31. a reverse gear shifting fork.

Detailed Description

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

referring to fig. 1 to 7, an AMT transmission assembly includes a housing, a rotating shaft, an intermediate shaft 14, a reverse gear shift actuator 8, a sliding gear sleeve 5 and an intermediate shaft brake 11; the rotating shaft and the intermediate shaft 14 are arranged in the shell in parallel, and the rotating shaft is provided with a plurality of sliding gear sleeves 5 which are used for shifting gears; a reverse gear shifting actuating mechanism 8 is arranged in the shell, and an intermediate shaft brake 11 is arranged at the end part of the intermediate shaft; the intermediate shaft 14 is provided with an intermediate shaft gear, and the intermediate shaft gear and the intermediate shaft 14 are in interference fit for transmitting torque.

The housing comprises a clutch housing 2, a transmission housing 15 and a rear cover housing 7; the clutch housing 2, the transmission housing 15 and the rear cover housing 7 are connected in sequence to form a housing; the rotating shaft penetrates through the shell, and the intermediate shaft is arranged in the shell in parallel to the rotating shaft; the rotating shaft and the two ends of the intermediate shaft are connected through bearings.

The rotating shaft comprises an input shaft 1 and an output shaft 10; the input shaft 1 is connected with the output shaft 10 through a bearing, and the clutch actuator 17 is arranged on the outer side wall of the transmission shell 15 and connected with the clutch shell 2; an input speed measuring gear 3 is arranged on the input shaft 1, and an output speed measuring gear 9 is arranged on the output shaft 10.

The intermediate shaft brake 11 comprises an intermediate shaft 14, a dual plate 20, a brake cylinder cover 21, a friction plate 22, a brake piston 23 and an intermediate shaft rear bearing cover 24; the intermediate shaft 14 is coaxially arranged in the intermediate shaft rear bearing cover 24, a plurality of friction plates are sleeved on the intermediate shaft 14, and a plurality of dual plates and the friction plates are arranged at intervals; a brake cylinder cover is arranged on the side surface of the intermediate shaft rear bearing cover, and a brake piston is arranged in a space between the intermediate shaft rear bearing cover and the brake cylinder cover; a compression space is formed between the brake piston and the brake cylinder cover, and the brake cylinder cover is provided with an air inlet communicated with the compression space.

An axial hole is formed in the end part of the intermediate shaft, a spring 25 is arranged in the axial hole, and a top cap 26 is sleeved on the spring 25; the geometric center of the brake piston is provided with a top pin 27, and a top cap 26 is pressed against the top pin 27; a cylindrical pin is arranged on the inner side wall of the rear bearing cover of the intermediate shaft, and the dual piece limits circular motion through the cylindrical pin; a sealing ring is arranged between the edge of the brake piston and the cylinder cover of the brake; the intermediate shaft 14 is disposed within the housing by bearings.

The reverse gear shift actuating mechanism 8 comprises a reverse gear shift fork shaft 28, a reverse gear piston 29, a cylinder cover 30 and an air inlet; the gearbox rear cover shell and the cylinder cover form a sealing structure, the reverse gear shifting fork shaft is arranged in the sealing structure, the reverse gear piston sleeve is arranged at the end of the reverse gear shifting fork shaft, the reverse gear piston separates the sealing structure into two chambers, air inlets are formed in the cylinder cover and the gearbox rear cover shell, and the two air inlets are respectively communicated with the two chambers.

O-shaped sealing rings are arranged between the reverse gear piston 29 and the gearbox rear cover shell, between the gearbox rear cover shell and the reverse gear shift fork shaft 28 and between the reverse gear piston 29 and the reverse gear shift fork shaft 28; the cylinder head 30 and the rear cover case are sealed by a gasket; the reverse gear piston 29 is fixed at the end part of the reverse gear shifting fork shaft 28 through a locking nut; the reverse gear shifting fork shaft is sleeved with a reverse gear shifting fork 31, and the reverse gear shifting fork is matched with a reverse gear sliding sleeve.

The outer side of the shell is provided with an operating device assembly 4 and a reverse gear electromagnetic valve assembly 6; a brake solenoid valve 16 is disposed on the side of the rear cover housing, an air cleaner regulator assembly 18 is attached to the left side of the transmission housing, and a controller 19 is attached to the right side of the transmission housing.

Fig. 1 shows a 6-gear high-end light AMT transmission scheme. Adopt single jackshaft structural style, from the front to back be direct fender, overdrive, four keep off, three keep off, two keep off, one keep off and reverse gear in proper order, adopt the slip tooth cover to shift gears, compare in the synchronous ware and shift gears, slip tooth cover structural cost is low, and the reliability is high. The intermediate shaft gear and the intermediate shaft are in interference fit to transmit torque, and the output shaft gear is sleeved on the output shaft in a hollow mode through the needle bearing.

2) The AMT assembly adopts a sliding gear sleeve to shift gears. When the gear is shifted down, the rotating speed of the low-gear is increased to be close to the sliding gear sleeve and then the corresponding gear is engaged by increasing the rotating speed of the engine; during gear shifting, the rotating speed of the intermediate shaft is actively reduced through the intermediate shaft brake, so that the rotating speed of the high-gear is reduced to be close to the sliding gear sleeve and then the corresponding gear is engaged, the synchronization time is shortened, the impact of gear beating and gear shifting is reduced, and the gear shifting smoothness is improved. The jackshaft stopper is arranged in jackshaft rear end axle head department, and has arranged the stopper solenoid valve in back lid casing left side, compact structure.

3) The input speed measuring gear is arranged on the input shaft, and the output speed measuring gear is tightly pressed on the output shaft through the flange plate. Compared with the speed measuring gear arranged on the middle shaft, the speed measuring gear is arranged on the input shaft and the output shaft respectively, and the collected rotating speed signals are more accurate.

4) As shown in fig. 2 and 3, the clutch actuator is arranged on the left side of the transmission housing and connected with the clutch housing when viewed from the flange end of the transmission, the air filter regulator assembly is connected on the left side of the transmission housing, and the controller is connected on the right side of the transmission housing, so that the structure is compact.

5) The operating device assembly is arranged on the upper portion of the transmission shell and is a three-shaft operating mechanism which shifts gears for two gears, three gears, four gears and five gears, and the operating device assembly can share one set of operating device assembly with other torque sections AMT, so that the universality of parts is improved, and the cost is reduced.

6) Because the controlling device assembly only shifts to the fender that advances, reverses to keep off and shifts through a pneumatic actuating mechanism that shifts, reverses to keep off and shifts the cylinder integration and cover the casing after, for two-way gas structure, one side air inlet covers the casing after, and one side air inlet covers on reversing to keep off the cylinder, and has arranged the solenoid valve assembly that reverses to keep off on cover casing upper portion, compact structure, and the integrated level is high, and the cost is lower.

7) The AMT assembly comprises three sections of shells, namely a clutch shell, a transmission shell and a rear cover shell. The clutch shell independently plays a role in connecting the engine and the transmission, the clutch shell can be replaced according to different matching requirements, and parts in the transmission shell and the rear cover shell are kept unchanged.

The power of the engine is transmitted to an input shaft of the transmission through the clutch, a gear of the input shaft is normally meshed with a transmission gear of the intermediate shaft to drive the intermediate shaft to rotate, other gear gears of the intermediate shaft are respectively meshed with gear gears of the output shaft, and the gear gears on the output shaft are sleeved on the output shaft in a hollow mode.

As shown in fig. 7, each sensor transmits the acquired signal to the controller, and the controller opens or closes each air path valve in an electrically controlled manner.

1) A clutch: the controller controls the disconnection or connection of the clutch by opening or closing the air passage valve of the clutch actuator.

2) Forward gear: the controller shifts gears by opening or closing the air circuit valve of the operating device assembly.

(1) When the gear is shifted down, the rotating speed of the low-gear is increased to be close to the sliding gear sleeve and then the corresponding gear is engaged by increasing the rotating speed of the engine;

(2) when the gear is shifted up, the controller opens an air path valve of the brake electromagnetic valve, the air cylinder of the intermediate shaft brake is used for air intake, the rotating speed of the intermediate shaft is reduced through friction force, and the high-gear is shifted into a corresponding gear when the rotating speed of the high-gear is reduced to be close to the sliding gear sleeve.

3) Reversing gear:

when the gear is engaged, the controller opens a gas circuit valve of the reverse gear electromagnetic valve assembly, and a gas inlet at the side of a rear cover shell of the reverse gear pneumatic gear shifting actuating mechanism is used for introducing gas to push a reverse gear shifting fork to move backwards for gear entering; after the gear is engaged, the controller closes the gas circuit valve of the reverse gear electromagnetic valve assembly.

When the gear is picked, the controller opens a gas circuit valve of the reverse gear electromagnetic valve assembly, and a reverse gear cylinder cover side gas inlet of the reverse gear pneumatic gear shifting actuating mechanism is used for gas inlet to push a reverse gear shifting fork to move forwards for gear reversing; after the gear is engaged, the controller closes the gas circuit valve of the reverse gear electromagnetic valve assembly.