CN203098827U - Hydraulic shift system of speed changing box of loader - Google Patents
Hydraulic shift system of speed changing box of loader Download PDFInfo
- Publication number
- CN203098827U CN203098827U CN 201320009609 CN201320009609U CN203098827U CN 203098827 U CN203098827 U CN 203098827U CN 201320009609 CN201320009609 CN 201320009609 CN 201320009609 U CN201320009609 U CN 201320009609U CN 203098827 U CN203098827 U CN 203098827U
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- China
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- friction plate
- piston
- gear
- speed changing
- retaining
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- Expired - Fee Related
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model discloses a hydraulic shift system of a speed changing box of a loader, and belongs to the technical field of engineering machinery. The hydraulic shift system overcomes the defects that in the prior art, shift impact is large, operation comfort is poor and reliability of a transmission system is affected. According to the technical scheme, the hydraulic shift system is characterized by comprising a speed changing pump, a speed changing valve and a clutch of a speed changing operation mechanism, the clutch of the speed changing operation mechanism comprises a reverse gear oil cylinder, a reverse gear piston, a reverse gear friction plate, a forward first gear oil cylinder, a forward first gear piston and a forward first gear friction plate, a forward first gear belleville spring is arranged between the forward first gear piston and the forward first gear friction plate, and a reverse gear belleville spring is arranged between the reverse gear piston and the reverse gear friction plate. The hydraulic shift system is mainly used on the loader of the engineering machinery.
Description
Technical field
The utility model belongs to technical field of engineering machinery, specifically, relates in particular to a kind of loading machine gearbox hydraulic pressure shifting system.
Background technique
As everyone knows, loader needs steer loader frequently to advance and fall back in the actual job process, finishes the loading and unloading operation of material, wherein frequently advances and is realized by the gearbox shifting system with falling back.
The loading machine gearbox shifting system is by variable speed pump, speed change valve, operating mechanism (machinery or automatically controlled), forward clutch (oil cylinder, piston, friction plate, return spring etc.), the clutch that falls back (oil cylinder, piston, friction plate, return spring etc.), gear clutch (oil cylinder, piston, friction plate, return spring etc.).Because forward gear need frequently be changed with the retaining that falls back in operation process, thereby advance and the smooth gear shifting that falls back bigger for the operation comfort of loader and working performance influence, when particularly filling loose unpacked material such as shift impact cause the unrestrained of material too greatly easily.
In order to solve the big problem of shift impact, the producer of present domestic manufacturing speed change valve improves and optimizates speed change valve, control its shift impact, and for the improvement of speed change valve mainly is flow when reducing gearshift and dash oil, will have influence on the promptness of gearshift like this, particularly oil viscosity is bigger during winter, and is mobile bad, causes and waits the phenomenon of keeping off.In view of above situation, only reduce shift impact by optimizing speed change valve, can't get a desired effect.
Summary of the invention
Originally be that model utility provides a kind of loading machine gearbox hydraulic pressure shifting system, frequently advance and fall back greatlyyer, and cause easily and wait the defective of keeping off phenomenon operation comfort and working performance influence to overcome in the prior art steer loader.
The present invention realizes by the following technical solutions: loading machine gearbox hydraulic pressure shifting system, comprise variable speed pump, speed change valve, speed changing operating mechanism clutch, described speed changing operating mechanism clutch comprises the oil cylinder that reverses gear, the piston that reverses gear, the friction plate that reverses gear, the 1 retaining oil cylinder that advances, the 1 retaining piston that advances, the 1 retaining friction plate that advances, advance 1 retaining piston and 1 retaining that advances be provided with between the friction plate advance 1 keep off belleville spring, piston and reverse gear and be provided with the butterfly spring that reverses gear between the friction plate reverses gear.
Compared with prior art, the beneficial effects of the utility model are: the amplitude that pressure rises when shifting gears by improvement of the present utility model has been slowed down, thus can make the clutch smooth and steady combination, reduce shift impact, promote operation comfort, this scheme can not produce and wait the phenomenon of keeping off simultaneously.
Description of drawings
Fig. 1 is the utility model loader hydraulic pressure gearshift schematic diagram;
Fig. 2 be the utility model advance 1 the retaining and the clutch configuration schematic representation that reverses gear;
Fig. 3 is advance 1 retaining belleville spring and the structural representation of belleville spring of reversing gear of the utility model;
Fig. 4 is the I portion enlarged view of Fig. 3.
Among the figure: 1, variable speed pump; 2, speed change valve; 3, the oil cylinder that reverses gear; 4, the piston that reverses gear; 5, the belleville spring that reverses gear; 6, return spring; 7, the friction plate that reverses gear; 8, advance 1 the retaining friction plate; 9, advance 1 the retaining belleville spring; 10, advance 1 the retaining piston; 11, advance 1 the retaining oil cylinder.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the utility model loading machine gearbox hydraulic pressure shifting system mainly comprises variable speed pump 1, speed change valve 2, speed changing operating mechanism clutch, the speed changing operating mechanism clutch comprises the oil cylinder 3 that reverses gear, the piston 4 that reverses gear, the friction plate 7 that reverses gear, the 1 retaining oil cylinder 11 that advances, the 1 retaining piston 10 that advances, advance 1 retaining friction plate 8, return spring 6, seal ring, bearing etc., advance 1 retaining piston 10 with advance that being provided with between the 1 retaining friction plate 8 advances and 1 keep off belleville spring 9, reverse gear piston 4 and reverse gear and be provided with the butterfly spring 5 that reverses gear between the friction plate 7; Fig. 3, Fig. 4 are the structural representation of 1 retaining belleville spring 9, the butterfly spring 5 that reverses gear of advancing, owing between piston and friction plate, increased belleville spring, during gearshift clutch originally in conjunction with the time impacting force be the power that belleville spring distortion produces, thereby be slowly to increase, the variation in pressure of speed change valve changes according to the belleville spring deformation force, can realize smooth-going gearshift and not exist waiting the phenomenon of keeping off by the parameter of adjusting belleville spring, shift impact finishes the back friction plate and is compressed simultaneously by piston and belleville spring, finishes gearshift.
Claims (1)
1. loading machine gearbox hydraulic pressure shifting system, comprise variable speed pump (1), speed change valve (2), speed changing operating mechanism clutch, described speed changing operating mechanism clutch comprises the oil cylinder that reverses gear (3), the piston that reverses gear (4), the friction plate that reverses gear (7), the 1 retaining friction plate (8) that advances, the 1 retaining piston (10) that advances, 1 retaining oil cylinder (11) advances, it is characterized in that: be provided with the butterfly spring that reverses gear (5) between piston that reverses gear (4) and the friction plate that reverses gear (7), advance 1 retaining piston (10) with advance that being provided with between 1 retaining friction plate (8) advances 1 keeps off belleville spring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009609 CN203098827U (en) | 2013-01-08 | 2013-01-08 | Hydraulic shift system of speed changing box of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009609 CN203098827U (en) | 2013-01-08 | 2013-01-08 | Hydraulic shift system of speed changing box of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098827U true CN203098827U (en) | 2013-07-31 |
Family
ID=48850232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320009609 Expired - Fee Related CN203098827U (en) | 2013-01-08 | 2013-01-08 | Hydraulic shift system of speed changing box of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134677A (en) * | 2015-01-27 | 2015-12-09 | 四川大学 | Fast hydraulic gear shifting system |
-
2013
- 2013-01-08 CN CN 201320009609 patent/CN203098827U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134677A (en) * | 2015-01-27 | 2015-12-09 | 四川大学 | Fast hydraulic gear shifting system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20170108 |