CN216478724U

CN216478724U - Power gear shifting transmission system

Info

Publication number: CN216478724U
Application number: CN202122197619.4U
Authority: CN
Inventors: 刘陈光; 王丽娜; 孙洪涛; 许志良; 靳世成
Original assignee: Shandong Wuzheng Auto Parts Assembly Co ltd; Shantuo Agricultural Machinery Equipment Co ltd; Shandong Wuzheng Group Co Ltd
Current assignee: Shandong Wuzheng Auto Parts Assembly Co ltd; Shantuo Agricultural Machinery Equipment Co ltd; Shandong Wuzheng Group Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-05-10
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a power gear-shifting transmission system which comprises a main input shaft, wherein the main input shaft is connected with a power reversing mechanism, the power reversing mechanism is connected with a main power speed change mechanism through a middle shaft, the main power speed change mechanism is connected with an auxiliary power speed change mechanism through a main speed change output shaft, and the auxiliary power speed change mechanism is connected with a crawling gear mechanism through an auxiliary speed change output shaft; the PTO transmission system is characterized by further comprising an auxiliary input shaft, wherein the auxiliary input shaft is connected with a PTO transmission system. The power gear shifting transmission system integrates the functions of power reversing, power gear shifting, power PTO and power four-wheel drive, adopts electro-hydraulic integrated control, is convenient to operate and comfortable to drive, reduces the operation difficulty and labor intensity, and improves the operation efficiency. Two gear pumps are directly installed on the transmission system assembly, so that the pipeline arrangement can be simplified, and the device is convenient and attractive.

Description

Power gear shifting transmission system

Technical Field

The utility model relates to a transmission system, in particular to a power shifting transmission system.

Background

At present, most of domestic agricultural machinery of tractors adopts a meshing sleeve or a synchronizer to shift gears, when climbing in field operation or shifting gears due to large working resistance, power is required to be cut off to shift gears, the operation efficiency and the operation quality are affected, time is wasted, and oil consumption is high. The power gear shifting technology can shift gears under the condition of uninterrupted power, and can well solve the problems. The mechanical gear shifting mode increases the fatigue strength of a driver, and the power gear shifting, power reversing, wet PTO and power four-wheel drive technologies adopt an electro-hydraulic system to control gear combination and separation, so that the operating comfort of the driver can be well improved. The traditional transmission system has 16+16 gears, and the operation gears are few, so that various operation working conditions are difficult to meet. The existing domestic tractor product acts on the gear pump of a steering system and a lifting system, the front end of an engine is generally arranged, oil pipes need to span the whole engine in arrangement, and the pipelines are bent for a plurality of lengths, so that the appearance is influenced, and the oil leakage risk is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a power gear shifting transmission system which is reasonable in layout, simple in structure and convenient to use.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a power shifting transmission system comprises a main input shaft, wherein the main input shaft is connected with a power reversing mechanism, the power reversing mechanism is connected with a main power speed change mechanism through a middle shaft, the main power speed change mechanism is connected with an auxiliary power speed change mechanism through a main speed change output shaft, and the auxiliary power speed change mechanism is connected with a crawling gear mechanism through an auxiliary speed change output shaft; the PTO transmission system is characterized by further comprising an auxiliary input shaft, wherein the auxiliary input shaft is connected with the PTO transmission system.

As a preferable technical scheme, the auxiliary input shaft is in transmission connection with a steering gear pump and a lifting gear pump.

As a preferred technical scheme, the power reversing mechanism comprises a front-rear-gear wet clutch, a front-gear driving gear and a rear-gear driving gear are fixedly sleeved on the main input shaft, the front-gear driving gear and the rear-gear driving gear are respectively in transmission connection with a front-gear driven gear and a rear-gear driven gear, and the front-rear-gear wet clutch can be controlled to be connected with the front-gear driven gear or the rear-gear driven gear; the front and rear wet clutches are connected with the intermediate shaft.

Preferably, the reverse gear drive gear is in transmission connection with the reverse gear driven gear through an idler gear.

Preferably, the main power transmission mechanism includes a two-gear wet clutch and a three-four-gear wet clutch, the intermediate shaft is connected with the three-four gear wet clutch which can be controlled to be connected with a three-gear driving gear or a four-gear driving gear, the three-gear driving gear and the four-gear driving gear are respectively connected with a three-gear driven gear and a four-gear driven gear in a transmission way, the three-gear driven gear and the four-gear driven gear are fixedly sleeved on the main speed change output shaft, the intermediate shaft is fixedly sleeved with a first-gear driving gear and a second-gear driving gear, the first gear driving gear and the second gear driving gear are respectively connected with a first gear driven gear and a second gear driven gear in a transmission way, the first-gear wet clutch and the second-gear wet clutch can be controlled to be connected with a first-gear driven gear or a second-gear driven gear, and the first-gear wet clutch and the second-gear wet clutch are connected with the main transmission output shaft; the main speed change output shaft is in transmission connection with an auxiliary speed change driving shaft.

Preferably, the auxiliary power transmission mechanism comprises an AB gear wet clutch and a CD gear wet clutch, the auxiliary transmission driving shaft is connected with the CD gear wet clutch which can be controlled to be connected with a C gear driving gear or a D gear driving gear, the C-gear driving gear and the D-gear driving gear are respectively connected with a C-gear driven gear and a D-gear driven gear in a transmission way, the C gear driving gear and the D gear driving gear are fixedly sleeved on the auxiliary speed change output shaft, the auxiliary speed change driving shaft is fixedly sleeved with an A gear driving gear and a B gear driving gear, the A-gear driving gear and the B-gear driving gear are respectively connected with an A-gear driven gear and a B-gear driven gear in a transmission way, the AB gear wet clutch can be controlled to be connected with an A gear driven gear or a B gear driven gear, and the AB gear wet clutch is connected with the auxiliary transmission output shaft.

As a preferred technical scheme, the crawling gear mechanism comprises a planetary reducer and a small bevel gear shaft, wherein a transmission shaft and an output shaft are arranged on the planetary reducer, the transmission shaft is in transmission connection with the auxiliary transmission output shaft through a main clutch, and the small bevel gear shaft can be connected with the transmission shaft or the output shaft through a meshing sleeve.

Preferably, the PTO transmission system includes a PTO clutch, and the auxiliary input shaft is connected to a power take-off unit through the PTO clutch.

As the preferred technical scheme, the main transmission output shaft and the auxiliary transmission driving shaft are connected through a connecting sleeve.

By adopting the technical scheme, the power gear shifting transmission system integrates the functions of power reversing, power gear shifting, power PTO and power four-wheel drive, adopts electro-hydraulic integrated control, is convenient to operate and comfortable to drive, greatly reduces the operation difficulty and labor intensity, and improves the operation efficiency. Two gear pumps for supplying oil to the steering system and the lifting system are directly arranged on the transmission system assembly, so that the pipeline arrangement can be simplified, and the device is more convenient and attractive.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

fig. 1 is a schematic structural view of the present invention.

In the figure: 1-a main input shaft; 2-the auxiliary input shaft; 3-intermediate shaft; 4-a main transmission output shaft; 5-auxiliary variable speed drive shaft; 6-auxiliary speed change output shaft; 7-connecting sleeves; 11-front and rear wet clutch; 12-a first-second gear wet clutch; 13-a third and fourth gear wet clutch; 14-AB wet clutch; 15-CD wet clutch; 16-a main clutch; 17-PTO clutch; 18-a planetary reducer; 19-small bevel gear shaft; 20-a steering gear pump; 21-lifting gear pump; 22-transfer case mechanism; 23-four drive wet clutch; 24-a power take-off unit; 111-forward gear drive gear; 112-reverse gear drive gear; 113-forward gear driven gear; 114-reverse gear driven gear; 115-an idler gear; 116-a third gear drive gear; 117-four gear drive gear; 118-a three-speed driven gear; 119-a four-gear driven gear; 120-a first gear drive gear; 121-two gear driving gear; 122-first gear driven gear; 123-two-gear driven gear; a gear 124-C driving gear; a 125-D gear driving gear; 126-C gear driven gear; 127-D driven gear; a 128-A gear drive gear; a 129-B gear driving gear; a 130-A gear driven gear; 131-B gear driven gear.

Detailed Description

The utility model is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1, a power shift transmission system includes a main input shaft 1, the main input shaft 1 is connected with a power reversing mechanism, the power reversing mechanism is connected with a main power speed change mechanism through an intermediate shaft 3, the main power speed change mechanism is connected with an auxiliary power speed change mechanism through a main speed change output shaft 4, and the auxiliary power speed change mechanism is connected with a crawling gear mechanism through an auxiliary speed change output shaft 6; the power transmission device further comprises an auxiliary input shaft 2, and the auxiliary input shaft 2 is connected with a PTO transmission system.

The auxiliary input shaft 2 is in transmission connection with a steering gear pump 20 and a lifting gear pump 21.

The power gear shifting transmission system integrates the functions of power reversing, power gear shifting, power PTO and power four-wheel drive, adopts electro-hydraulic integrated control, is convenient to operate and comfortable to drive, greatly reduces the operation difficulty and labor intensity, and improves the operation efficiency.

The power reversing mechanism comprises a front-rear gear wet clutch 11, a front gear driving gear 111 and a rear gear driving gear 112 are fixedly sleeved on the main input shaft 1, the front gear driving gear 111 and the rear gear driving gear 112 are respectively in transmission connection with a front gear driven gear 113 and a rear gear driven gear 114, and the front-rear gear wet clutch 11 can be controlled to be connected with the front gear driven gear 113 or the rear gear driven gear 114; the front and rear wet clutches 11 are connected with the intermediate shaft 3.

The reverse drive gear 112 is drivingly connected to the reverse driven gear 114 via an idler gear 115. The reverse gear driven gear 114 is moved in the opposite direction to the forward gear driven gear 113, thereby changing the moving direction.

The main power speed change mechanism comprises a second-gear wet clutch 12 and a third-fourth-gear wet clutch 13, the intermediate shaft 3 is connected with the third-fourth-gear wet clutch 13, the third-fourth-gear wet clutch 13 can be controlled to be connected with a third-gear driving gear 116 or a fourth-gear driving gear 117, the third-gear driving gear 116 and the fourth-gear driving gear 117 are respectively in transmission connection with a third-gear driven gear 118 and a fourth-gear driven gear 119, the third-gear driven gear 118 and the fourth-gear driven gear 119 are fixedly sleeved on the main speed change output shaft 4, the intermediate shaft 3 is fixedly sleeved with a first-gear driving gear 120 and a second-gear driving gear 121, the first-gear driving gear 120 and the second-gear driving gear 121 are respectively in transmission connection with a first-gear driven gear 122 and a second-gear driven gear 123, and the second-gear wet clutch 12 can be controlled to be connected with the first-gear driven gear 122 or the second-gear driven gear 123, the second gear wet clutch 12 is connected with the main speed change output shaft 4; the main speed change output shaft 4 is in transmission connection with an auxiliary speed change driving shaft 5.

The auxiliary power speed change mechanism comprises an AB gear wet clutch 14 and a CD gear wet clutch 15, the auxiliary transmission driving shaft 5 is connected with the CD gear wet clutch 15, the CD gear wet clutch 15 can be controlled to be connected with a C gear driving gear 124 or a D gear driving gear 125, the C gear driving gear 124 and the D gear driving gear 125 are respectively connected with a C gear driven gear 126 and a D gear driven gear 127 in a transmission manner, the C gear driving gear 124 and the D gear driving gear 125 are fixedly sleeved on the auxiliary transmission output shaft 6, the auxiliary transmission driving shaft 5 is fixedly sleeved with an A gear driving gear 128 and a B gear driving gear 129, the A gear driving gear 128 and the B gear driving gear 129 are respectively connected with an A gear driven gear 130 and a B gear driven gear 131 in a transmission manner, the AB gear wet clutch 14 can be controlled to be connected with the A gear driven gear 130 or the B gear driven gear 131, the AB range wet clutch 14 is connected to the range output shaft 6.

The crawling gear mechanism comprises a planetary reducer 18 and a small bevel gear shaft 19, a transmission shaft and an output shaft are arranged on the planetary reducer 18, the transmission shaft is in transmission connection with the auxiliary variable speed output shaft 6 through a main clutch 15, and the small bevel gear shaft 19 can be connected with the transmission shaft or the output shaft through a meshing sleeve.

The PTO transmission system comprises a PTO clutch 17, and the secondary input shaft is connected to a power take off unit 24 via the PTO clutch 17. The auxiliary input shaft 2 is provided with the steering gear pump 20 and a lift gear pump 21 at the front end of the PTO clutch 17. The PTO clutch 17 is controlled by an electro-hydraulic integrated system, so that power is controlled to be transmitted to the power output unit 24, and transmission and cut-off of a tool working power source are realized.

The main transmission output shaft 4 and the auxiliary transmission driving shaft 5 are connected through a connecting sleeve 7.

The power reversing mechanism comprises an advancing gear and a retreating gear, the main power speed change mechanism comprises a gear 1, a gear 2, a gear 3 and a gear 4, the auxiliary power speed change mechanism comprises a gear A, a gear B, a gear C and a gear D, and the crawling gear mechanism comprises a straight gear and a crawling gear.

Power is input from the main input shaft 1 to drive the forward gear driving gear 111 and the reverse gear driving gear 112, further drive the forward gear driven gear 113 and the reverse gear driven gear 114, the front and rear gear wet clutches 11 are controlled to be combined or separated through the electro-hydraulic integrated control system, the front and rear gear wet clutches 11 transmit the power of the forward gear driven gear 113 or the reverse gear driven gear 114 to the intermediate shaft 3, and therefore the combination and separation of the forward gear and the reverse gear are achieved.

The three-fourth gear wet clutch 13 is controlled by an electro-hydraulic integrated control system, the intermediate shaft 3 is connected with a three-gear driving gear 116 or a four-gear driving gear 117, and then a three-gear driven gear 118 or a four-gear driven gear 119 is driven, so that combination and separation of three gears and four gears are realized.

Jackshaft 3 drive one keep off driving gear 120 and two keep off driving gear 121, and then drive one keep off driven gear 122 and two keep off driven gear 123, keep off wet clutch 12 through the electric liquid integrated control system control one, combine or separate with one keep off driven gear 122, two keep off driven gear 123, with one keep off driven gear 122 or two keep off the power transmission of driven gear 123 to main gear output shaft 4 on, realize the combination and the separation of one two keep off.

The main transmission output shaft 4 is in transmission connection with the auxiliary transmission driving shaft 5, the auxiliary transmission driving shaft 5 drives the A-gear driving gear 128 and the B-gear driving gear 129 to further drive the A-gear driven gear 130 and the B-gear driven gear 131, the AB-gear wet clutch 14 is controlled through the electro-hydraulic integrated control system, power of the A-gear driven gear 130 or the B-gear driven gear 131 is transmitted to the auxiliary transmission output shaft 6, and combination and separation of the A gear and the B gear are achieved.

The electro-hydraulic integrated control system is used for controlling the CD gear wet clutch 15, the main transmission output shaft 4 is connected with the C gear driving gear 124 or the D gear driving gear 125, the C gear driven gear 126 or the D gear driven gear 127 is further driven, and combination and separation of the C gear and the D gear are achieved.

The crawling gear adopts a planetary speed reducing mechanism, the meshing sleeve slides forwards to form a straight connecting gear, and the meshing sleeve slides backwards to form the crawling gear.

The power reversing gear has two gears, the main power speed change mechanism has four gears, the auxiliary power speed change mechanism has four gears, the crawling gear mechanism has two gears, and the four gears are combined to form 32 forward gears and 32 backward gears.

Two gear pumps for supplying oil to the steering system and the lifting system are directly arranged on the transmission system assembly, and are different from the traditional gear pump which is arranged at the front end of an engine, so that the pipeline arrangement can be simplified, and the device is more convenient and attractive.

The auxiliary power transmission mechanism is connected with a transfer case mechanism 22, and the transfer case mechanism 22 is connected with a four-wheel drive wet clutch 23. The transfer case mechanism 22 employs wet clutch technology for controlling the tractor drive profile.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A powershift powertrain, comprising: the power reversing mechanism is connected with a main power speed change mechanism through a middle shaft, the main power speed change mechanism is connected with an auxiliary power speed change mechanism through a main speed change output shaft, and the auxiliary power speed change mechanism is connected with a crawling gear mechanism through an auxiliary speed change output shaft; the PTO transmission system is characterized by further comprising an auxiliary input shaft, wherein the auxiliary input shaft is connected with the PTO transmission system.

2. The powershift powertrain of claim 1, wherein: and the auxiliary input shaft is in transmission connection with a steering gear pump and a lifting gear pump.

3. The powershift powertrain of claim 1, wherein: the power reversing mechanism comprises a front-rear gear wet clutch, a front gear driving gear and a rear gear driving gear are fixedly sleeved on the main input shaft, the front gear driving gear and the rear gear driving gear are respectively connected with a front gear driven gear and a rear gear driven gear in a transmission manner, and the front-rear gear wet clutch can be controlled to be connected with the front gear driven gear or the rear gear driven gear; the front and rear wet clutches are connected with the intermediate shaft.

4. The powershift powertrain of claim 3, wherein: the reverse gear driving gear is in transmission connection with the reverse gear driven gear through an idler gear.

5. The powershift powertrain of claim 3, wherein: the main power speed change mechanism comprises a second-gear wet clutch and a third-fourth-gear wet clutch, the intermediate shaft is connected with the third-fourth-gear wet clutch, the third-fourth-gear wet clutch can be connected with a third-gear driving gear or a fourth-gear driving gear in a controlled manner, the third-gear driving gear and the fourth-gear driving gear are respectively connected with a third-gear driven gear and a fourth-gear driven gear in a transmission manner, the third-gear driven gear and the fourth-gear driven gear are fixedly sleeved on the main speed change output shaft, the intermediate shaft is fixedly sleeved with a first-gear driving gear and a second-gear driving gear, the first-gear driving gear and the second-gear driving gear are respectively connected with a first-gear driven gear and a second-gear driven gear in a transmission manner, the second-gear wet clutch can be connected with a first-gear driven gear or a second-gear driven gear in a controlled manner, and the second-gear wet clutch is connected with the main speed change output shaft; the main speed change output shaft is in transmission connection with an auxiliary speed change driving shaft.

6. The powershift powertrain of claim 5, wherein: vice power speed change mechanism includes that AB keeps off wet clutch and CD and keeps off wet clutch, vice variable speed initiative hub connection CD keeps off wet clutch, CD keeps off wet clutch can controlled connection C fender driving gear or D fender driving gear, C keeps off driving gear, D and keeps off the driving gear and be connected with C fender driven gear, D fender driven gear respectively the transmission, C keeps off the driving gear, D keeps off the driving gear and fixes to cup joint on the vice variable speed output shaft, the fixed cover that connects on the vice variable speed driving shaft has A fender driving gear, B to keep off the driving gear, A keeps off the driving gear and is connected with A fender driven gear, B fender driven gear respectively the transmission, AB keeps off wet clutch can controlled connection A fender driven gear or B fender driven gear, AB keeps off wet clutch and connects vice variable speed output shaft.

7. The powershift powertrain of claim 1, wherein: the crawling gear mechanism comprises a planetary reducer and a small bevel gear shaft, a transmission shaft and an output shaft are arranged on the planetary reducer, the transmission shaft is in transmission connection with the auxiliary variable speed output shaft through a main clutch, and the small bevel gear shaft can be connected with the transmission shaft or the output shaft through a meshing sleeve.

8. The powershift powertrain of claim 1, wherein: the PTO transmission system comprises a PTO clutch, and the auxiliary input shaft is connected with a power output unit through the PTO clutch.

9. The powershift powertrain of claim 5, wherein: the main variable-speed output shaft and the auxiliary variable-speed driving shaft are connected through a connecting sleeve.