CN201277213Y - Series connection type secondary regulation hydraulic hybrid power transmission of loader - Google Patents
Series connection type secondary regulation hydraulic hybrid power transmission of loader Download PDFInfo
- Publication number
- CN201277213Y CN201277213Y CNU2008200253768U CN200820025376U CN201277213Y CN 201277213 Y CN201277213 Y CN 201277213Y CN U2008200253768 U CNU2008200253768 U CN U2008200253768U CN 200820025376 U CN200820025376 U CN 200820025376U CN 201277213 Y CN201277213 Y CN 201277213Y
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- clutch
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Abstract
A tandem type secondary regulation hydraulic hybrid driving device of a loader belongs to the mechanical field, which is mainly formed by a secondary element, a variable hydraulic cylinder, an electro-hydraulic servo valve, a clutch, a constant pressure variable pump, one or more than one hydraulic energy accumulation components and the like, and is characterized in that the constant pressure variable pump is connected with an engine through the clutch, the secondary element is connected with a rear axle of the loader through the clutch, the electro-hydraulic servo valve and the variable hydraulic cylinder are installed on the secondary element after being integrally produced, the hydraulic energy accumulation component is formed by a hydraulic accumulator, an energy accumulation control valve and a cut-off valve, wherein the energy accumulation component is installed on the chassis of the loader. The driving device has the beneficial effects that the recovery and the reutilization of energy are realized, and the loading power of the engine is reduced, and the hydraulic energy accumulation components can control the storage and the release of high pressure oil for assuring the hydraulic accumulator to have higher charge pressure, and high pressure oil can be controlled to reutilize according to the working conditions of the loader, thereby increasing the reutilization effect and efficiency of accumulated energy.
Description
Technical field
The utility model relates to a kind of loader hydraulic hybrid transmission device, belongs to mechanical field.
Background technique
Existing loader power transmission system generally is made of motor, gearbox, transmission shaft, ransaxle etc., in the work, because loader rises, brakes frequent, energy consumption is bigger with discharging, if do not reclaim and utilize again in addition, the braking kinetic energy of loader will waste, and not only causes the mechanical braking wearing and tearing, and causes the irrational utilization and the environmental pollution of the energy.
Summary of the invention
In order to overcome the deficiency of existing loader transmission system, the utility model provides a kind of loader hydraulic pressure serial mixed power transmission device, by adopting one both to can be used as hydraulic pump works, can be used as oil hydraulic motor work again, can realize hydraulic pressure can and the hydraulic motor/pump (secondary component) changed mutually of mechanical energy and the hydraulic energy-accumulating assembly braking kinetic energy that reclaims and store loader, and in loader starting, acceleration, climbing process, be used, thereby reduced the installed power of motor, reached energy-conservation and purpose environmental protection.
The technical scheme in the invention for solving the technical problem:
A kind of loader tandem secondary regulation hydraulic hybrid transmissions mainly is made up of secondary component, variable oil cylinder, electrohydraulic control, clutch, constant pressure variable displacement pump, one or more hydraulic energy-accumulating assembly etc.; Constant pressure variable displacement pump connects with motor by clutch, secondary component connects with the loader back axle by clutch, electrohydraulic control and variable oil cylinder are made of one and are installed on the secondary component, the hydraulic energy-accumulating assembly is made up of hydraulic accumulator, accumulation of energy control valve, stop valve, the oil inlet and outlet of hydraulic accumulator is connected with an end hydraulic fluid port of stop valve, the other end hydraulic fluid port of stop valve is connected with the oil outlet of accumulation of energy control valve, the filler opening of accumulation of energy control valve is connected on system's main line, and the hydraulic energy-accumulating assembly is installed on the loader chassis.
The beneficial effects of the utility model are, have realized the recovery of energy and have utilized, have reduced the installed power of motor; The hydraulic energy-accumulating assembly can be controlled the storage and the release of high pressure oil, guarantees that hydraulic accumulator has higher charge pressure, can control it and utilize according to loader operating conditions needs, has reduced unnecessary waste, and that has improved stored energy utilizes effect and efficient again; Hydraulic pressure energy density height, output power is big, and bigger starting, braking torque can be provided.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a kind of structural representation of loader tandem secondary regulation hydraulic hybrid transmissions.
Fig. 2 is a kind of hydraulic schematic diagram of loader tandem secondary regulation hydraulic hybrid transmissions.
1. hydraulic accumulator 2. stop valves 3. accumulation of energy control valves 4. hydraulic energy-accumulating assemblies 5. electrohydraulic controls 6. variable oil cylinders 7. secondary components 8,9. clutch 10. constant pressure variable displacement pumps
Embodiment
A kind of loader tandem secondary regulation hydraulic hybrid transmissions mainly is made up of secondary component 7, variable oil cylinder 6, electrohydraulic control 5, one or more hydraulic energy-accumulating assembly 4, constant pressure variable displacement pump 10, clutch etc. 8,9 etc.; Constant pressure variable displacement pump 10 connects with motor by clutch 9, secondary component 7 connects with the loader back axle by clutch 8, electrohydraulic control 5 is made of one with variable oil cylinder 6 and is installed on the secondary component 7, hydraulic energy-accumulating assembly 4 is made up of hydraulic accumulator 1, accumulation of energy control valve 3, stop valve 2, the oil inlet and outlet of hydraulic accumulator 1 is connected with an end hydraulic fluid port of stop valve 2, the other end hydraulic fluid port of stop valve 2 is connected with the oil outlet of accumulation of energy control valve 3, the filler opening of accumulation of energy control valve 3 is connected on system's main line, and hydraulic energy-accumulating assembly 4 is installed on the loader chassis.
When loader begins to brake, controller sends control signal and gives electrohydraulic control 5, the motion of controlled variable oil cylinder 6, regulate the size of secondary component 7 swashplate angles (Zero Crossing Point), make it be in the work of oil hydraulic pump operating mode, the clutch 8 that closes, secondary component 7 is under the loader inertia kinetic energy drives, to system's feedback energy.Accumulation of energy control valve 3 in the control hydraulic energy-accumulating assembly 4, switch to position, a left side by meta, in the high pressure oil flow direction and the stores hydraulic pressure accumulator 1, because tandem hydraulic hybrid transmission system is the constant pressure network system, at secondary component 7 when hydraulic accumulator 1 is oil-filled, constant pressure variable displacement pump 10 is also oil-filled to hydraulic accumulator 1, until be full of reach default pressure till.When loader needs emergency braking, should depress brake petal immediately without the callback course of braking energy, realize emergency braking.
When loader start, quicken, when travelling, controller sends control command and gives electrohydraulic control 5, the swash plate Zero Crossing Point of secondary component 7 and the size of swashplate angle are regulated in the motion of controlled variable oil cylinder 6, make it be in the work of oil hydraulic motor operating mode, clutch 8 closes.Control accumulation of energy control valve 3 switches to right position by meta, and the high pressure oil that stores in the hydraulic accumulator 1 just discharges like this,, drives loader and travels to secondary component 7 fuel feeding with constant pressure variable displacement pump 10.In the work, can control the work of one or more hydraulic energy-accumulating assemblies 4, when, travelling speed little when loading mass is low, can discharge hydraulic accumulator energy stored in the hydraulic energy-accumulating assembly according to loader loading mass size, road traffic condition; Big when loading mass, when travelling speed is high, can discharge hydraulic accumulator energy stored in a plurality of hydraulic energy-accumulating assemblies.
Accumulation of energy control valve 3 can be solenoid directional control valve, electro-hydraulic reversing valve, electrohydraulic control or electro-hydraulic proportional valve.
Claims (3)
1, a kind of loader tandem secondary regulation hydraulic hybrid transmissions is by secondary component (7), variable oil cylinder (6), electrohydraulic control (5), one or more hydraulic energy-accumulating assembly (4), constant pressure variable displacement pump (10), clutch etc. (8,9) form, it is characterized in that, constant pressure variable displacement pump (10) connects with motor by clutch (9), secondary component (7) connects with the loader back axle by clutch (8), electrohydraulic control (5) is made of one with variable oil cylinder (6) and is installed on the secondary component (7), and hydraulic energy-accumulating assembly (4) is installed on the loader chassis.
2, a kind of loader tandem secondary regulation hydraulic hybrid transmissions according to claim 1, it is characterized in that, described hydraulic energy-accumulating assembly (4) is made up of hydraulic accumulator (1), stop valve (2), accumulation of energy control valve (3), the oil inlet and outlet of hydraulic accumulator (1) is connected with an end hydraulic fluid port of stop valve (2), the other end hydraulic fluid port of stop valve (2) is connected with the oil outlet of accumulation of energy control valve (3), and the filler opening of accumulation of energy control valve (3) is connected on system's main line.
3, a kind of loader tandem secondary regulation hydraulic hybrid transmissions according to claim 1 and 2 is characterized in that, described accumulation of energy control valve (3) is solenoid directional control valve or electro-hydraulic reversing valve or electrohydraulic control or electro-hydraulic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200253768U CN201277213Y (en) | 2008-06-26 | 2008-06-26 | Series connection type secondary regulation hydraulic hybrid power transmission of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200253768U CN201277213Y (en) | 2008-06-26 | 2008-06-26 | Series connection type secondary regulation hydraulic hybrid power transmission of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201277213Y true CN201277213Y (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200253768U Expired - Fee Related CN201277213Y (en) | 2008-06-26 | 2008-06-26 | Series connection type secondary regulation hydraulic hybrid power transmission of loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201277213Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538558A (en) * | 2018-12-11 | 2019-03-29 | 山东交通学院 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
| CN112855631A (en) * | 2021-02-03 | 2021-05-28 | 北京航空航天大学 | Hatch door actuating system |
-
2008
- 2008-06-26 CN CNU2008200253768U patent/CN201277213Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538558A (en) * | 2018-12-11 | 2019-03-29 | 山东交通学院 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
| CN112855631A (en) * | 2021-02-03 | 2021-05-28 | 北京航空航天大学 | Hatch door actuating system |
| CN112855631B (en) * | 2021-02-03 | 2022-04-05 | 北京航空航天大学 | Hatch door actuating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20100626 |