CN202867800U - Pneumatic gear-shifting tractor speed change device - Google Patents
Pneumatic gear-shifting tractor speed change device Download PDFInfo
- Publication number
- CN202867800U CN202867800U CN 201220535507 CN201220535507U CN202867800U CN 202867800 U CN202867800 U CN 202867800U CN 201220535507 CN201220535507 CN 201220535507 CN 201220535507 U CN201220535507 U CN 201220535507U CN 202867800 U CN202867800 U CN 202867800U
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- gear
- driving gear
- low
- speed
- axle
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of tractors and relates to a power gear-shifting speed change device. A pneumatic gear shift tractor speed change device comprises a high-speed gear, a low-speed gear, a high-speed driven gear, a low-speed driven gear, a main transmission shaft driving gear and a four-wheel transmission shaft driving gear. The pneumatic gear-shifting tractor speed change device is provided with a two-position four-way electromagnetic directional valve and an air cylinder, an air inlet and an air outlet of the air cylinder are respectively connected with the two-position four-way electromagnetic directional valve, the end of an air cylinder piston is connected with a gear-shifting lever through a meshing sleeve, a high-gear driving gear and a low-gear driving gear are installed on a first shaft, a high-gear driven gear and a low-gear driven gear are respectively meshed with the high-gear driving gear and the low-gear driving gear and installed on a second shaft, the main transmission shaft driving gear is meshed with the high-speed driven gear and installed on a third shaft, and the four-wheel transmission shaft driving gear is meshed with the main transmission shaft driving gear and installed on a fourth shaft.
Description
Technical field
The utility model belongs to the tractor field, relates to a kind of speed change gear of power shfit.
Background technique
At present, on the various big-power tractors of domestic production, generally adopt traditional manual shift; Speed change lever is generally each one of major-minor variable speed, complex operation in the process of gear shift, effort.Also have small part to adopt the hydraulic power gearshift to replace mechanical changeover, so not only increase its manufacturing cost, and will add many numerous and jumbled hydraulic pipe lines and electromagnetic control system.For the large tractor market status of present China, a kind of simple to operate in the urgent need to model utility, the tractor speed change device of low cost of manufacture.
The model utility content
The purpose of this utility model is to provide a kind of Pneumatic shifting device of rational in infrastructure, easy to operate, low cost of manufacture.
The technical solution of the utility model is: a kind of compressed-air shifting tractor speed change device comprises high gear, low speed gear, high speed driven gear, low speed driven gear, main drive shaft driving gear and 4 wheel driven transmission shaft driving gear; Be provided with two-position four-way solenoid directional control valve and cylinder, the air inlet/outlet of above-mentioned cylinder links to each other with two-position four way change valve respectively, and the cylinder piston end links to each other by engaging sleeve with gear level; Above-mentioned high and low shift driving gear is installed on the first axle, the high and low shift driven gear is installed on the second axle with the engagement of high and low shift driving gear respectively, main drive shaft driving gear and the engagement of high speed driven gear are installed on the 3rd axle, and four-wheel drive axle driving gear is meshed with the main drive shaft driving gear and is installed on the 4th axle.
The utility model can bring following beneficial effect: realize electrical control by solenoid valve, can control by push-button switch in operator cabin; Easily realize intelligent control; Pneumatic actuator is simple in structure, light, installation and maintenance are simple; Therefore the low use of pressure rating safety; Working medium is that inexhaustible air, air itself are not spent; Pump-down process is simple, and is free from environmental pollution, and cost is low; The adjusting of ouput force and operating rate is very easy to; The movement speed of cylinder is generally 50 ~ 500mm/s, than the quick action of hydraulic pressure and electric means; Reliability is high, long service life; The effective action number of times of electrical apparatus element is about 1,000,000 times, and the life-span of the general solenoid valve of SMC greater than 3,000 ten thousand times, pet-valve is above 200,000,000 times; Utilize the compressibility of air, but storing energy is realized central gas supply; But the short time releases energy, to obtain the high-speed response in the intermittent movement; Can realize buffering, impact load and over power have stronger adaptive capacity; Can make Pneumatic actuator that the self-sustaining ability is arranged under certain condition; Full pneumatic control has fire prevention, explosion-proof, moistureproof ability, compares with hydraulic way, and pneumatic mode can be used in the high temperature occasion; Because the Air Flow loss is little, but the pressurized air centralizedly supply, the remote conveying.Reduce by an one control lever spare, driver's operation is simple, convenient.
Description of drawings
Fig. 1 is this new principle schematic diagram.
Embodiment
As shown in Figure 1, this novel pneumatic gearshift tractor speed change device comprises two-position four-way solenoid directional control valve 1, cylinder 2, high gear 3, low speed gear 4, high speed driven gear 5, low speed driven gear 6, main drive shaft driving gear 7 and 4 wheel driven transmission shaft driving gear 8.
Air inlet/outlet A, the B of above-mentioned cylinder link to each other with two-position four way change valve respectively, and the cylinder piston end links to each other with engaging sleeve with gearshift; Above-mentioned high and low shift driving gear is installed on the first axle, the both sides of gearshift engaging sleeve; The high and low shift driven gear is installed on the second axle with the engagement of high and low shift driving gear respectively; Main drive shaft driving gear and the engagement of high speed driven gear are installed on the 3rd axle, power are passed to the main speed-change area of gearbox, then are delivered to back axle; Four-wheel drive axle driving gear is meshed with the main drive shaft driving gear and is installed on the 4th axle, with transmission of power to propons.
The compressed-air shifting principle is: when two-position four-way solenoid valve is in left position, the air inlet of cylinder B mouth, pushing piston make the engagement of high and low shift engage a gear engaging sleeve and low speed gear to left movement, power is passed to the low speed driven gear by the first beam warp low speed gear, thereby realizes low speed driving, the operation of complete machine; When two-position four-way solenoid valve is in right position, the air inlet of cylinder A mouth, pushing piston moves right, and makes the engagement of high and low shift engage a gear engaging sleeve and high gear, power is passed to the high speed driven gear by the first beam warp high gear, thereby realizes the running at high speed of car load, operation.
Above-described specific embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (1)
1. a compressed-air shifting tractor speed change device comprises high gear (3), low speed gear (4), high speed driven gear (5), low speed driven gear (6), main drive shaft driving gear (7) and 4 wheel driven transmission shaft driving gear (8); It is characterized in that: be provided with two-position four-way solenoid directional control valve (1) and cylinder (2), the air inlet/outlet of above-mentioned cylinder links to each other with two-position four way change valve respectively, and the cylinder piston end links to each other by engaging sleeve with gear level; Above-mentioned high and low shift driving gear is installed on the first axle, the high and low shift driven gear is installed on the second axle with the engagement of high and low shift driving gear respectively, main drive shaft driving gear and the engagement of high speed driven gear are installed on the 3rd axle, and four-wheel drive axle driving gear is meshed with the main drive shaft driving gear and is installed on the 4th axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220535507 CN202867800U (en) | 2012-10-18 | 2012-10-18 | Pneumatic gear-shifting tractor speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220535507 CN202867800U (en) | 2012-10-18 | 2012-10-18 | Pneumatic gear-shifting tractor speed change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867800U true CN202867800U (en) | 2013-04-10 |
Family
ID=48034522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220535507 Expired - Fee Related CN202867800U (en) | 2012-10-18 | 2012-10-18 | Pneumatic gear-shifting tractor speed change device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178609A (en) * | 2017-06-15 | 2017-09-19 | 厦门厦金机械股份有限公司 | The high low gear gearshift of ecp |
-
2012
- 2012-10-18 CN CN 201220535507 patent/CN202867800U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178609A (en) * | 2017-06-15 | 2017-09-19 | 厦门厦金机械股份有限公司 | The high low gear gearshift of ecp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151018 |
|
| EXPY | Termination of patent right or utility model |