CN201507502U - Hydraulic transmission device - Google Patents
Hydraulic transmission device Download PDFInfo
- Publication number
- CN201507502U CN201507502U CN2009203095510U CN200920309551U CN201507502U CN 201507502 U CN201507502 U CN 201507502U CN 2009203095510 U CN2009203095510 U CN 2009203095510U CN 200920309551 U CN200920309551 U CN 200920309551U CN 201507502 U CN201507502 U CN 201507502U
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- Prior art keywords
- hydraulic
- pump
- motor
- secondary component
- hydraulic transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 18
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to the filed of automatic control, in particular to a hydraulic transmission device comprising a variable cylinder, an electro-hydraulic servo valve, a wheel reduction gear, a secondary element, a pilot operated check valve, a hydraulic reservoir, a constant-pressure variable pump, an engine, and the like; the device is characterized in that the electro-hydraulic servo valve is connected with the variable cylinder for controlling the delivery capacity of the secondary element; the secondary element and the hydraulic reservoir are connected through the pilot operated check valve; the speed-torque sensor of the wheel reduction gear is connected with an ECU; and the constant-pressure variable pump is connected with the engine. The hydraulic transmission device uses the constant-pressure variable pump and the hydraulic reservoir to guarantee the working pressure of system constant pressure network, and the set system constant working pressure value can be changed and the drive mode is adjusted according to the difference of traction object so that the object ability and characteristic of the machine set is adjusted, thereby having obvious advantages such as reasonable structure, convenient use and good driving effect.
Description
Technical field:
The utility model relates to automation field, specifically a kind of hydraulic transmission.
Background technique:
At present, the aircraft tractor power-transmission system mainly contains three types: hydraulic machine transmission, electric drive and hydraulic transmission.Carry out towage to the present generation aircraft of complex and expensive, stepless speed governing characteristic is the basic demand to the aircraft tractor transmission system.Can the infinite variable speed within the specific limits hydraulic machine kind of drive be applied to the transmission system of aircraft tractor very early, but have the following disadvantages: the range of infinitely variable speeds of (1) torque-converters own is narrower, has shift impact during by gear-shift transmission; (2) motor is that hydraulic type connects with wheel, and the dynamic braking characteristic is relatively poor; (3) owing to the characteristic of torque-converters, the overload protection ability is superior inadequately; (4) torque-converters does not have the ability of continuous transformation power outbound course.Mode of electric drive seems unable to do what one wishes to the large aircraft tractor of high-power high pulling torque demand.This just makes hydraulic transmission mode just become the main flow kind of drive of present big-and-middle-sized aircraft tractor, and there is following several Frequently Asked Questions in the conventional Hydraulic Power Transmission System of aircraft tractor: (1) Hydraulic Power Transmission System oil hydraulic pump and motor continuous control simultaneously difficulty, poor anti jamming capability; (2) kinetic energy in the time of can not reclaiming car brakeing or potential energy; (3) do not possess hydraulic pressure network constant pressure characteristic, be difficult to accurately carry out in real time driving moment control; (4) in the vehicle driving process, need the driver to control accelerator open degree in real time and regulate engine speed, adapting to the demand of car load speed and driving moment, and accelerator open degree and the non-linear relation of the speed of a motor vehicle, the driver controls difficulty, and operation easier is big.
ECU (ElectronicControl Unit) electronic control unit claims " car running computer ", " vehicle-mounted computer " etc. again.From purposes then is the automobile specified computer controller, also is the automobile specified single-chip microcomputer.It is the same with common single-chip microcomputer, is made up of large-scale integrated circuit (LSI) such as microprocessor (CPU), storage (ROM, RAM), input/output interface (I/O), analog-digital converter (A/D) and shaping, drivings.The voltage power supply scope of ECU generally at 6.5-16V (inner key aspect has stable-pressure device), operating current in 0.015-0.1A, operating temperature at subzero 40-80 degree.Can bear the following vibration of 1000Hz, therefore the probability of ECU damage is very little, CPU is the core in ECU, it has the function of computing and control, motor is when operation, and it gathers the signal of each sensor, carries out computing, and change the result of computing into control signal, the work of control controlled device.It also carries out the control to storage (ROM,, RAM), input/output interface (I/O) and other external circuit; The program of depositing among the storage ROM is to be the basis through accurate Calculation and a large amount of data of getting of testing, and this intrinsic program constantly compares and calculates with the signal of gathering each sensor that comes when engine operation.The control of multiple parameters such as the igniting of comparison and result calculated control motor, air fuel ratio, idling, exhaust gas recirculation.It also has fault self-diagnosis and protective function, when system produces fault, it can also be in RAM record trouble code and adopt protective measure from above-mentioned intrinsic program, to read the running that alternative program is kept motor automatically, make automobile can reach repair shop.
Summary of the invention:
The utility model is the deficiency that overcomes existing transmission device, proposes a kind of rational in infrastructure, simple to operate, easy to use, obvious results hydraulic transmission.
The technical measures that the utility model adopts are:
A kind of hydraulic transmission, comprise variable oil cylinder, electrohydraulic control, wheel reductor, secondary component, Pilot operated check valve, hydraulic accumulator, constant pressure variable displacement pump, motor etc., it is characterized in that electrohydraulic control links to each other with the variable oil cylinder of control secondary component discharge capacity, be connected by Pilot operated check valve between secondary component and the hydraulic accumulator, the torque and speed sensors of wheel reductor links to each other with ECU, and constant pressure variable displacement pump connects with motor.
Secondary component described in the utility model is meant the hydraulic pump/motor that can be in oil hydraulic pump and two kinds of operating modes of motor.
Be connected by the solenoid-operated proportional selector valve between secondary component described in the utility model and the hydraulic accumulator.
In the utility model, the torque and speed sensors of secondary component links to each other with ECU, and ECU links to each other with electrohydraulic control.
In the utility model, the constant-pressure variable pump discharge is connected working connection through safety valve.
Service pump in the utility model is connected with the constant pressure variable displacement pump axis, and by engine-driving, service pump is connected with the variable oil cylinder with electrohydraulic control, also links to each other with the multi-disk wet brake of Parking, thereby makes compact structure, arrangement convenience.
The utility model in the course of the work, when normal vehicle operation, constant pressure variable displacement pump is taken turns for system provides the worker jointly with hydraulic accumulator under the driving of motor.In car brakeing or ramp driving cycle, hydraulic pump/motor works in the oil hydraulic pump operating mode, makes pressure oil.Under the effect of system pressure oil, hydraulic pump/motor drives car hydraulic pump/motor this moment through wheel reductor and is dragged by load, under the effect of inertia energy or gravitational potential energy, enter hydraulic accumulator through the energy of hydraulic pump/motor feedback with the form of high-pressure and hydraulic oil, with hydraulic pressure can form store; In the starting once more or accelerating process of vehicle, the energy that is stored in the hydraulic accumulator outputs to the hydraulic pump/motor that works in the motor operating mode with the form of hydraulic oil, through the wheel reductor driving wheel, the energy that reclaims is utilized again.In the native system, Pilot operated check valve and solenoid directional control valve are used for accumulator is carried out switch control, electrohydraulic control is controlled the discharge capacity of hydraulic pump/motor to adapt to the load needs by the controlled variable oil cylinder, solenoid directional control valve is connected in the conversion oil circuit of drive pattern (two drive/4 wheel driven), link to each other with driver's operation handle or button, be used to realize the conversion of drive pattern, simultaneously, the utility model is provided with the ECU module, be provided with control program in the ECU module, and be connected with each sensor, by gathering each signal, control according to setting program and to each electronic equipment, need the driver to carry out the problem of the higher complex steps operation of difficulty when having solved the work of conventional hydraulic transmission device, have rational in infrastructure, easy to use, drive significant advantage such as effective grade.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Reference character: variable oil cylinder 1, electrohydraulic control 2, wheel reductor 4, secondary component 6, torque and speed sensors 7, Pilot operated check valve 8, solenoid directional control valve 9, hydraulic accumulator 10, constant pressure variable displacement pump 14, motor 12, ECU module 15, service pump 16, safety valve 17.
Embodiment:
A kind of hydraulic transmission, comprise variable oil cylinder 1, electrohydraulic control 2, wheel reductor 4, secondary component 6, Pilot operated check valve 8, hydraulic accumulator 10, constant pressure variable displacement pump 14, motor 12 etc., it is characterized in that electrohydraulic control 2 links to each other with the variable oil cylinder 1 of control secondary component 6 discharge capacities, be connected by Pilot operated check valve 8 between secondary component 6 and the hydraulic accumulator 10, torque and speed sensors 7 on the wheel reductor 4 links to each other with ECU module 15, constant pressure variable displacement pump 14 is connected with motor 12, secondary component 6 described in the utility model is meant the hydraulic pump/motor that can be in oil hydraulic pump and two kinds of operating modes of motor, be connected by the solenoid-operated proportional selector valve between secondary component described in the utility model 6 and the hydraulic accumulator 10, in the utility model, constant pressure variable displacement pump 14 outlets are connected working connection through safety valve 17, service pump 16 in the utility model is connected with constant pressure variable displacement pump 14 axises, drive by motor 12, service pump 16 is connected with variable oil cylinder 1 with electrohydraulic control 2, also link to each other with the multi-disk wet brake of Parking, thereby make compact structure, arrangement convenience, the utility model in the course of the work, when normal vehicle operation, constant pressure variable displacement pump 14 provides working pressure oil for system jointly with hydraulic accumulator 10 under the driving of motor 12.Under the effect of system pressure oil, hydraulic pump/motor 6 is through wheel reductor 4 driving wheel.In car brakeing or ramp driving cycle, hydraulic pump/motor 6 works in the oil hydraulic pump operating mode, this moment, hydraulic pump/motor 6 was dragged by load, under the effect of inertia energy or gravitational potential energy, enter hydraulic accumulator 10 through the energy of hydraulic pump/motor 6 feedbacks with the form of high-pressure and hydraulic oil, with hydraulic pressure can form store; In the starting once more or accelerating process of vehicle, the energy that is stored in the hydraulic accumulator 10 outputs to the hydraulic pump/motor 6 that works in the motor operating mode with the form of hydraulic oil, through wheel reductor 4 driving wheel, the energy that reclaims is utilized again.In the native system, Pilot operated check valve 8 and solenoid directional control valve 9 are used for accumulator is carried out switch control, electrohydraulic control 2 is controlled the discharge capacity of hydraulic pump/motor 6 to adapt to the load needs by controlled variable oil cylinder 1, solenoid directional control valve 9 is used to realize the conversion of drive pattern, simultaneously, the utility model is provided with the ECU module, be provided with control program in the ECU module, and be connected with each sensor, by gathering each signal, control according to setting program and to each electronic equipment, need the driver to carry out the problem of the higher complex steps operation of difficulty when having solved the work of conventional hydraulic transmission device, the working pressure that the utility model adopts constant pressure variable displacement pump and hydraulic accumulator to come common guarantee system constant pressure network, and can be according to the difference of traction object, change the constant working pressure value of setting of system and adjust drive pattern, adjust the driving power and the characteristic of unit, have rational in infrastructure, easy to use, drive significant advantage such as effective grade.
Claims (6)
1.
A kind of hydraulic transmission, comprise variable oil cylinder, electrohydraulic control, wheel reductor, secondary component, Pilot operated check valve, hydraulic accumulator, constant pressure variable displacement pump, motor etc., it is characterized in that electrohydraulic control links to each other with the variable oil cylinder of control secondary component discharge capacity, be connected by Pilot operated check valve between secondary component and the hydraulic accumulator, the torque and speed sensors of wheel reductor links to each other with ECU, and constant pressure variable displacement pump connects with motor.
2.
A kind of hydraulic transmission according to claim 1 is characterized in that described secondary component is meant the hydraulic pump/motor that can be in oil hydraulic pump and two kinds of operating modes of motor.
3.
A kind of hydraulic transmission according to claim 1 is characterized in that being connected by the solenoid-operated proportional selector valve between described secondary component and the hydraulic accumulator.
4.
A kind of hydraulic transmission according to claim 1 is characterized in that the torque and speed sensors of secondary component links to each other with ECU, and ECU links to each other with electrohydraulic control.
5.
A kind of hydraulic transmission according to claim 1 is characterized in that the constant-pressure variable pump discharge connects working connection through safety valve.
6.
A kind of hydraulic transmission according to claim 1 is characterized in that service pump is connected with the constant pressure variable displacement pump axis, and by engine-driving, service pump is connected with the variable oil cylinder with electrohydraulic control, and links to each other with the multi-disk wet brake of Parking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203095510U CN201507502U (en) | 2009-09-03 | 2009-09-03 | Hydraulic transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203095510U CN201507502U (en) | 2009-09-03 | 2009-09-03 | Hydraulic transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507502U true CN201507502U (en) | 2010-06-16 |
Family
ID=42468628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203095510U Expired - Fee Related CN201507502U (en) | 2009-09-03 | 2009-09-03 | Hydraulic transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507502U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171206A1 (en) * | 2011-06-16 | 2012-12-20 | 长沙中联重工科技发展股份有限公司 | Constant power control device and method of variable displacement pump, and concrete pumping device |
| CN108146245A (en) * | 2017-12-29 | 2018-06-12 | 航天重型工程装备有限公司 | A kind of control system of preventing engine hypervelocity |
| CN108488277A (en) * | 2018-05-29 | 2018-09-04 | 凯盛重工有限公司 | A kind of hydraulic system of mining brake shuttle tram |
| CN109253118A (en) * | 2018-10-29 | 2019-01-22 | 北京航天发射技术研究所 | A kind of automatic switchover constant pressure oil source device based on pressure judgement |
| CN110816659A (en) * | 2019-11-21 | 2020-02-21 | 山东交通学院 | Independent driving and independent steering robot secondary adjustment hydraulic mobile platform |
-
2009
- 2009-09-03 CN CN2009203095510U patent/CN201507502U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171206A1 (en) * | 2011-06-16 | 2012-12-20 | 长沙中联重工科技发展股份有限公司 | Constant power control device and method of variable displacement pump, and concrete pumping device |
| CN108146245A (en) * | 2017-12-29 | 2018-06-12 | 航天重型工程装备有限公司 | A kind of control system of preventing engine hypervelocity |
| CN108488277A (en) * | 2018-05-29 | 2018-09-04 | 凯盛重工有限公司 | A kind of hydraulic system of mining brake shuttle tram |
| CN108488277B (en) * | 2018-05-29 | 2024-03-26 | 凯盛重工有限公司 | Hydraulic system of mining braking shuttle car |
| CN109253118A (en) * | 2018-10-29 | 2019-01-22 | 北京航天发射技术研究所 | A kind of automatic switchover constant pressure oil source device based on pressure judgement |
| CN110816659A (en) * | 2019-11-21 | 2020-02-21 | 山东交通学院 | Independent driving and independent steering robot secondary adjustment hydraulic mobile platform |
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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: 20100616 Termination date: 20130903 |