CN2077499U - Energy-saving hydraulic system for wheel-type engineering machinery - Google Patents
Energy-saving hydraulic system for wheel-type engineering machinery Download PDFInfo
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- CN2077499U CN2077499U CN 90203657 CN90203657U CN2077499U CN 2077499 U CN2077499 U CN 2077499U CN 90203657 CN90203657 CN 90203657 CN 90203657 U CN90203657 U CN 90203657U CN 2077499 U CN2077499 U CN 2077499U
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Abstract
The utility model relates to an energy-saving hydraulic system. The utility model can store the part braking energy of a wheeled type engineering machine, and the part braking energy can be released when the wheeled type engineering machine starts and speeds up. The energy-saving hydraulic system can solely drive the wheeled type engineering machine to run and can also be used as an auxiliary drive component of the wheeled type engineering machine. The utility model mainly comprises an axial plunger pump (1), an accumulator (8), a two-position four-way valve (2), a three-position four-way valve (3), etc. A braking pedal or a starting acceleration pedal (52) which can work with an accelerator pedal (53) is used to control the direction shift of the three-position four-way valve (3), so the storage and the release of the braking energy can be realized. The direction shift of the two-position four-way valve can realize the operating condition of the frontward motion or the backward motion, and the two-position four-way valve (2) is controlled by a gear shift operating rod.
Description
The utility model is the hydraulic energy-saving system of using about industrial wheeled equipment.
In industrial wheeled equipment work, need advance and retreat braking continually, starting and acceleration.Typical operation mode " V " type working system with wheel loader is an example: wheel loader need be braked 3 times in each work cycle, starting and acceleration each 4 times.Each starting, acceleration all will be wasted a large amount of fuel, and have reduced motor, braking plate life-span, have increased waste gas and noise pollution.A series of solutions to vehicle braking energy-savings such as automobiles have been proposed: as energy saving device and Chinese patent CN85200239U, the CN86210778U etc. of Canada, Sweden in existing literature and the technology.But these schemes all do not solve vehicle the fall back energy storage and the exoergic of operating mode, and the operating mode that falls back in the industrial wheeled equipment work (as the distance that falls back) accounts for more than 30% of operating mode of walking, such scheme also exists need be provided with hydraulic oil container separately, control valve when commutation reversing impact is big, and the complicated and most industrial wheeled equipments of the transfer mode of braking accumulation of energy operating mode are not established main clutch and are not suitable for problem such as industrial wheeled equipment.
The purpose of this utility model is for a kind of hydraulic energy-saving system that is applicable to industrial wheeled equipment is provided, can utilize the part braking energy to make industrial wheeled equipment start to walk and give it the gun, and can prolong motor, braking plate working life, and reduce waste gas and noise pollution, improve operating efficiency.
Solution of the present utility model is: by driving component axial piston pump is connected on the industrial wheeled equipment ransaxle (as propons or back axle), with axial piston pump with mechanical energy be converted into hydraulic pressure can or opposite, and use the accumulator stored energy.Make a three-position four-way valve commutation Brake Energy be stored or release the operating mode that makes a two-position four-way valve commutation realize advancing and falling back.During braking, the portion of energy that axial piston pump will transmit in the time of will braking is stored in the accumulator with the pressure oil form; When starting or acceleration, pressure oil driving axial plunger pump drives industrial wheeled equipment and travels the industrial wheeled equipment work done.
Below in conjunction with embodiment's wheel loader hydraulic energy-saving system and accompanying drawing thereof the utility model is elaborated.
Fig. 1 is the hydraulic system principle figure of this system.
Fig. 2 is the layout plan of this system on wheel loader.
Fig. 3, Fig. 4 are the structure and the mounting point figure of this system's driving component.
Fig. 5 is the circuit theory diagrams of this system.
Fig. 6 is the structure and the mounting point figure of this system's starting, accelerating unit.
Fig. 7 is that the A of Fig. 6 is to view.
Driving component connects axial piston pump (1) and wheel loader transmission shaft, driving component and axial piston pump (1) key joint, and key connecting makes transmission shaft and axial piston pump (1) to rotate with rotating speed.See Fig. 3, Fig. 4.The actuator port of axial piston pump (1) is connected in respectively on two main valve hydraulic fluid ports of two-position four-way valve (2) mutually.See Fig. 1.Two main valve hydraulic fluid ports in addition of two-position four-way valve (2) link to each other with two main valve hydraulic fluid ports of three-position four-way valve (3) respectively, and the while one tunnel links to each other back by oil purifier (11) oil sump tank (13) with Fill valve (4).Fill valve (4) timely repairing when axial piston pump (1) oil suction is not enough; Another road connects logical accumulator (8) hydraulic fluid port in one-way valve (5) back.One-way valve (5) can prevent that pressure oil from pouring in down a chimney.The form control two-position four-way valve (2) and the three-position four-way valve (3) of electricity consumption liquid can reduce reversing impact.
Two main valve hydraulic fluid ports one tunnel in addition of three-position four-way valve (3) connect logical accumulator (8) hydraulic fluid port in sequence valve (7) back; Another road connects oil purifier (12) back oil sump tank (13).Sequence valve (7) makes and keeps higher oil pressure (16～20MPa) in the accumulator (8).When wheel loader was braked, the oil outlet of axial piston pump (1) had higher oil pressure just can open one-way valve (5) back oil storage, helped wheel loader is carried out effectively braking, prolonged the braking plate life-span.In addition, lower oil pressure is not remarkable to the effect of wheel loader starting, acceleration.
Accumulator (8) oil port also connects a relief valve (6).When the oil pressure in the accumulator (8) surpassed the setting of relief valve (6), relief valve (6) was opened, pressure oil spill oil sump tank (13), protective system safety.
The pilot pressure oil of three-position four-way valve in this system (3) and two-position four-way valve (2) is by turning to oil pump (10) to provide in the wheel loader steering system.Oil outlet serial connection sequence valve (9) at steerig pump (10).No matter whether wheel loader turns to, and sequence valve (9) can guarantee that steerig pump (10) oil outlet oil pressure is the setting that the control oil channel oil pressure is not less than sequence valve (9), makes two-position four-way valve (2) and three-position four-way valve (3) reliable operation.
For ease of arranging that accumulator (8) also can be by a plurality of parallel connections.
The electromagnet coil (40) of two-position four-way valve (2) also is connected in wheel loader and falls back on the switch (42) of lamp (or the buzzer that falls back) (41).The left electromagnet coil (43) of three-position four-way valve (3) is connected on the braking light switch (44) of wheel loader.Right electromagnet coil (45) is connected on starting, the acceleration switch (46).See Fig. 5.
The power supply of two-position four-way valve (2), three-position four-way valve (3) is provided by the engine start storage battery group (47) of wheel loader.Control the power on/off of this circuit system by ignition switch, not shown among Fig. 5.
Fuel tank (13) is the equipment hydraulic oil container of wheel loader.
This system works principle is as follows:
During the wheel loader cruising, three-position four-way valve (3) main valve plug keeps the meta state under control-oil pressure, and two-position four-way valve (2) is at left or right position, the valve position state that promptly advances or fall back and travel.See Fig. 1.Wheel loader travels wheel loader by the power one side driving wheel (15) that motor (14) transmits, on the other hand also by the driving component driving axial plunger pump (1) on the ransaxle.At this moment axial piston pump (1) returns fuel tank (13) from fuel tank (13) oil suction after the no pressure oil extraction.Externally not work done of axial piston pump (1).When axial piston pump (1) oil suction was not enough, Fill valve (4) was opened repairing automatically.
When wheel loader is braked, the driver depresses brake petal, connected the braking light switch on the wheel loader (44), Stop Lamp (48) is bright, also connected simultaneously the left electromagnetic coil (43) of three-position four-way valve (3), three-position four-way valve (3) main valve plug moves to left, three-position four-way valve (3) Cheng Zuowei state.This moment, the inertia of wheel loader made wheel (15) by driving component driving axial plunger pump (1), axial piston pump (1) is from fuel tank (13) oil suction, the pressure oil of pump discharge is by two-position four-way valve (2), open one-way valve (5), enter accumulator (8), with pressure oil form stored energy.If pressure oil pressure surpasses the setting of relief valve (6), relief valve (6) is opened, pressure oil spill oil sump tank (13).When wheel loader need fall back braking, driver-operated shift level was connected the lamp switch that falls back (12) on the wheel loader, and the lamp that falls back (41) is bright, sees Fig. 5.Also connect simultaneously the electromagnet coil (40) of two-position four-way valve (2), two-position four-way valve (2) becomes right position state.After the driver depressed brake petal, axial piston pump (1) just can be stored in the braking energy that partly fall back in the accumulator (8) with the pressure oil form.
When wheel loader starting or when quickening, the driver depress can with the starting of gas pedal (53) interlock, accelerator pedal (52).See Fig. 6.Make starting, acceleration switch (46) closure.Connected the right electromagnet coil of three-position four-way valve (3) (45).Main valve plug moves to right, and three-position four-way valve (3) becomes right position state.Pressure oil in accumulator this moment (8) is by sequence valve (7), three-position four-way valve (3), two-position four-way valve (2) driving axial plunger pump (1), make this pump as motor to wheel loader wheel (15) work done, make wheel loader starting or give it the gun.When wheel loader need fall back starting or acceleration, driver-operated shift level was connected the lamp switch that falls back (42) on the wheel loader, and the lamp that falls back (41) is bright.See Fig. 5.Also connect simultaneously the electromagnet coil (40) of two-position four-way valve (2), two-position four-way valve (2) becomes right position state, after the driver depresses starting, accelerator pedal (52), pressure oil driving axial plunger pump (1) in the accumulator (8) makes this pump fall back as the motor driven wheel loader and starts to walk or give it the gun.Reach the purpose of utilizing part braking energy fuel saving.
Driving Axle of Wheel Loader is different and different with the ransaxle pattern with axial piston pump (1) Placement.
First kind of pattern seen Fig. 3.
Driving component is the normal engagement of bevel gear wheel (19) on bevel gear (27) and the ransaxle.Bevel gear (27) is installed on the carriage (20).Thrust double-screw bolt (16) is arranged on the carriage (20), be used to limit the distortion of bevel gear wheel under the big load (19), bevel gear (27) is by bearing (17) and two roller bearings (25) supporting, and snap ring (18) limits it and moves axially.Snap ring (28), cover (26), cover (21) be roller bearing (25) fixedly.The splined shaft of axial piston pump (1) cooperates with the bevel gear (27) of band internal spline.With bolt (24), packing ring (23) carriage (20) is fixed on the axle housing, axial piston pump (1) is fixed on the carriage (20) with bolt (30), packing ring (29).
The motivational drive bevel gear wheel (19) that transmission shaft (31) transmits and drive bevel gear (27) and axial piston pump (1) rotates.Jack shaft (22) rotating band motor-car is taken turns (15) simultaneously.Turning to and axial piston pump (1) switched in opposite of transmission shaft (31).
Second kind of pattern seen Fig. 4.
To be connecting sleeve (39) couple together the splined shaft of transmission shaft (32) and axial piston pump (1) to driving component.Snap ring (38), cover (34), cover (35) are in order to rigid bearing (37), and axial piston pump (1) is fixed on the carriage (33) by bolt (30), packing ring (29).Cover (36) is used for tight sleeve (35).
Transmission shaft (32) is passed to axial piston pump (1) with power by connecting sleeve (39), and jack shaft (22) drives wheel (15) rotation simultaneously.Turning to of transmission shaft (32) turns to identical with axial piston pump (1).
For realizing that utilizing braking energy to drive industrial wheeled equipment travels.The utility model provides a kind of starting, accelerating unit.The A that sees Fig. 6 and Fig. 6 is to view Fig. 7.
This device is made up of starting, accelerator pedal (52), rocking arm (51), starting, acceleration switch (46), bearing pin (50), cotter pin (59), spring (55), screw (54), bearing pin (49), cotter pin (58), bolt (57), packing ring (56).
Starting, acceleration switch (46) are fixed on gas pedal (53) lower surface by bolt (57), packing ring (56).Rocking arm (51) is cut with scissors on the free bearing that is contained under the gas pedal (53) by bearing pin (50), cotter pin (59), starting, accelerator pedal (52) are contained on the cab floor free bearing (60) by bearing pin (49), cotter pin (58) hinge, and starting, accelerator pedal (52) rotate on an axis with gas pedal (53).Starting, accelerator pedal (52) are pressed in an end of rocking arm (51), and rocking arm (51) the other end is withstanding on the collision block of starting, acceleration switch (46) under spring (55) pulling force.
Starting, accelerator pedal (52) plane and gas pedal (53) plane parallel, but than the low segment distance S of gas pedal (53), S is 20～40mm, can prevent that the driver from stepping on by mistake.
Working principle is as follows:
When the driver need normally give it the gun or accelerate the equipment action, can operate depressing gas pedal (53) routinely.
When utilizing braking energy single driving industrial wheeled equipment to travel, depress starting, accelerator pedal (52), make rocking arm (51) promote starting, acceleration switch (46), starting, acceleration switch (46) are connected, and pressure oil driving axial plunger pump (1) drives wheel (15) rotation.Can be used for the starting and the acceleration of industrial wheeled equipment in the case.
The screwhole position that gas pedal (53) goes up I, II, III is used to adjust the pretightening force of spring (55), makes that gas pedal (53) keeps original position motionless after starting, acceleration switch (46) connection.When the driver then stepped on starting, accelerator pedal (52) downwards, bearing pin (50) just hauled gas pedal (53) and moves down together.
When utilizing the wheeled engineering machinery of braking energy auxiliary drive, as mentioned above, need then to step on starting, accelerator pedal (52) downwards, driving gas pedal (53) simultaneously moves down, starting, accelerator pedal (52) and gas pedal (53) interlock make braking energy and engine power drive industrial wheeled equipment together.
The utility model can be applicable to industrial wheeled equipments such as fork truck, wheel loader, fork installation.
Claims (6)
1, a kind of hydraulic energy-saving system, comprise axial piston pump (1), two-position four-way valve (2), three-position four-way valve (3), one-way valve (5), relief valve (6), accumulator (8), sequence valve (7), driving component and starting, accelerating unit and circuit, it is characterized in that: the actuator port of axial piston pump (1) links to each other with two main valve hydraulic fluid ports of two-position four-way valve (2) respectively, two main valve hydraulic fluid ports in addition of two-position four-way valve (2) link to each other with two main valve hydraulic fluid ports of three-position four-way valve (3) respectively, simultaneously wherein one the tunnel connect relief valve (6) and accumulator (8) after connecing one-way valve (5), two main valve hydraulic fluid ports in addition of three-position four-way valve (3) lead to accumulator (8) and fuel tank (13) respectively; The electromagnet coil (40) of two-position four-way valve (2) also is connected on the lamp that falls back (41) circuit, connect with the lamp switch that falls back (42), left side electromagnet coil (43) also is connected on Stop Lamp (48) circuit, connect with braking light switch (44), right electromagnet coil (45) is connected back and is connected on the storage battery group (47) with starting, acceleration switch (46); Starting, acceleration switch (46) are fixed on below the gas pedal (53); rocking arm (51) hinge is contained in below the gas pedal (53); starting, accelerator pedal (52) are pressed in an end of rocking arm (51), and rocking arm (51) the other end withstands on the collision block of starting, acceleration switch (46); Axial piston pump (1) is connected with ransaxle by driving component.
2, hydraulic energy-saving system according to claim 1 is characterized in that two-position four-way valve (2) and three-position four-way valve (3) are by electric liquid form control.
3, hydraulic energy-saving system according to claim 1 is characterized in that the normal engagement of bevel gear (27) and bevel gear wheel (19), is connected with axial piston pump (1) spline simultaneously.
4, hydraulic energy-saving system according to claim 1 is characterized in that connecting sleeve (39) is connected the splined shaft of transmission shaft (32) with axial piston pump (1).
5, hydraulic energy-saving system according to claim 1 is characterized in that starting, accelerator pedal (52) plane are than the low 20～40mm in gas pedal (53) plane.
6, hydraulic energy-saving system according to claim 1 is characterized in that screw (54) can be installed in different screw hole I, II, the III position on the gas pedal (53), is used to adjust the pretightening force of spring (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90203657 CN2077499U (en) | 1990-03-27 | 1990-03-27 | Energy-saving hydraulic system for wheel-type engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90203657 CN2077499U (en) | 1990-03-27 | 1990-03-27 | Energy-saving hydraulic system for wheel-type engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2077499U true CN2077499U (en) | 1991-05-22 |
Family
ID=4884808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90203657 Withdrawn CN2077499U (en) | 1990-03-27 | 1990-03-27 | Energy-saving hydraulic system for wheel-type engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2077499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386254C (en) * | 2006-03-31 | 2008-05-07 | 西安交通大学 | An energy recovery type electric forklift lifting control system |
| CN105083248A (en) * | 2015-09-01 | 2015-11-25 | 杭叉集团股份有限公司 | Service braking system |
| CN107143541A (en) * | 2017-05-09 | 2017-09-08 | 刘剑 | The block selecting automatic traveling crane system of vehicle |
-
1990
- 1990-03-27 CN CN 90203657 patent/CN2077499U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386254C (en) * | 2006-03-31 | 2008-05-07 | 西安交通大学 | An energy recovery type electric forklift lifting control system |
| CN105083248A (en) * | 2015-09-01 | 2015-11-25 | 杭叉集团股份有限公司 | Service braking system |
| CN107143541A (en) * | 2017-05-09 | 2017-09-08 | 刘剑 | The block selecting automatic traveling crane system of vehicle |
| CN107143541B (en) * | 2017-05-09 | 2018-06-19 | 南京阖云骥联信息科技有限公司 | The block selecting automatic traveling crane system of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |