CN109883694A - A kind of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand and its application - Google Patents
A kind of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand and its application Download PDFInfo
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- CN109883694A CN109883694A CN201910097716.0A CN201910097716A CN109883694A CN 109883694 A CN109883694 A CN 109883694A CN 201910097716 A CN201910097716 A CN 201910097716A CN 109883694 A CN109883694 A CN 109883694A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
It include mechanical part and control section the present invention relates to a kind of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand and its application, the testing stand.A kind of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand of the present invention can realize hydraulic mechanical composite transmission system hydrostatic transmission module performance test, pass through the Real-road Driving Cycle and operating condition of simulation application vehicle, test hydraulic machinery composite transmission hydrostatic transmission module transmission performance, and the performance test of the hydraulic mechanical composite transmission hydrostatic transmission module performance test of one section and multistage may be implemented, the proportion test of the mechanically and hydraulically power flow of composite transmission and mechanically and hydraulically power flow Automatic Optimal allocation proportion, according to the universal characteristic curve of matched engine, the final optimum combination allocation plan for realizing mechanically and hydraulically power flow, and power performance optimization is provided using the vehicle of hydraulic mechanical composite transmission system to go into operation in the future.
Description
Technical field
The present invention relates to a kind of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand and its
Using the proportion of the mechanically and hydraulically power flow of the acquisition and transmission system of the performance parameter suitable for hydrostatic transmission module
Test, belongs to technical field of engineering machinery.
Background technique
The working trucks such as engineering machinery, tractor big, working condition complicated condition, speed adjustable range with transmission power
Big feature, as the development and technology of society are constantly progressive, to the comfort of the transmission efficiency of its transmission system, shift with
And operation automation level requirement is higher and higher.Hydromechanical continuous variable transmission is one kind by hydraulic power stream and mechanical output
The power dividing hydraulic mechanical composite transmission form of stream combination transmitting power, can realize efficient big function by machine driving
Rate power transmission realizes variable speed by hydraulic drive, good application prospect is shown on High-Powered Vehicle.Hydraulic press
Tool stepless transmission is by both the good stepless speed regulation performance of hydrostatic transmissions and the higher stable state efficiency of machine driving
Advantage combines, to obtain an existing variable speed performance, and has the advantageous change of the distribution of greater efficiency and high efficient district
Fast transmission device.Therefore designing and developing high performance hydraulic mechanical stepless transmission is that hydraulic mechanical composite transmission system becomes big function
The key point of rate vehicle technology research and application.
Hydraulic mechanical stepless gearbox by mechanical transmission unit, one motor hydraulic stepless speed change gear unit of pump, by power
It is shunted or the parts such as planetary gear mechanism, fluid drive electronic control unit and the drive system converged is constituted.Work as machinery
When gear transmission ratio determines, the transmission ratio of hydraulic stepless speed change unit is adjusted, hydraulic mechanical composite transmission system can be made
Transmission ratio realize stepless variation in a certain range, so that power be made to export after shunting, variable speed and confluence, realize big
Power-efficient variable transmission.Therefore this power dividing hydraulic mechanical composite transmission system has had both purely mechanic transmission system
High transmission efficiency and pure Hydraulic Power Transmission System variable speed the advantages of.However the overall efficiency of transmission system is by Composite Transmission
The hydraulic and mechanical point of respective efficiency of power flow and their allocation proportion determined that the transmission efficiency of mechanical transmission unit is special
Property it is more stable, but the transmission efficiency of hydrostatic transmissions unit is relatively low relative to machine driving, forms hydrostatic transmissions unit
The components such as hydraulic pump, hydraulic motor, control valve group and connecting line all there are problems that efficiency in whole system unit, and
And the volumetric efficiency and mechanical efficiency of the pump and motor for influencing unit entirety transmission efficiency constantly change with the variation of speed, pass
Efficiency of movement is unstable.Therefore it under the premise of the variable speed ability for keeping hydrostatic transmission module, improves its efficiency peak and expands
High efficient district under common operating condition, in order to guarantee hydraulic mechanical composite transmission drive system efficiency and service performance.
Designing and developing hydraulic mechanical stepless gearbox at present and be tested for the property all is after the completion of trial production special
The test-bed or device of door carry out testing experiment, and pass through the testing experiment of some column, the hydraulic drive list of trial product
Member and mechanical transmission unit are frequently not optimal design matching scheme, in some instances it may even be possible to trial product again occur, result in production
The cost that product are designed and developed is relatively high and the period is long, consumes a large amount of manpower and material resources.Although current Computer Simulation
And Virtual Prototype Technique development substantially reduces design cycle and the cost of product, but due to simulated conditions and real working condition condition
Not meeting property, also result in the uncertainty of product development.
Summary of the invention
In view of the deficiencies of the prior art, it is more to provide a kind of power dividing hydraulic mechanical composite transmission system electricity load by the present invention
Functional test testing stand.
The present invention also provides a kind of above-mentioned power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing tests
The working method of platform.
Technical scheme is as follows:
A kind of power dividing hydraulic mechanical composite transmission system electricity loads multifunctional testing testing stand, including mechanical part and
Control section:
Mechanical part includes:
The sequentially connected hydrostatic transmission module power intake dc motor of input terminal, the input of hydrostatic transmission module power
Hold electromagnetic clutch, hydrostatic transmission module input terminal rotary speed torque sensor, tested hydrostatic transmission module, hydraulic drive list
First output end rotary speed torque sensor；
The sequentially connected mechanical transmission unit power intake ac variable-frequency electric motor of input terminal, mechanical transmission unit power
Input terminal electromagnetic clutch, mechanical transmission unit rotary speed torque sensor；
Hydrostatic transmission module output end rotary speed torque sensor, mechanical transmission unit rotary speed torque sensor respectively with confluence
The input shaft of mechanism is sequentially connected；The output shaft of confluence mechanism is successively sequentially connected output end rotary speed torque sensor, output end
Dc motor；
Control section includes:
Industrial control computer, the signal acquisition unit being separately connected with industrial control computer, programmable controller；
Signal acquisition unit is connect by pressure sensor, flow sensor with tested hydrostatic transmission module；Signal
Acquisition unit is also passed with hydrostatic transmission module input terminal rotary speed torque sensor, hydrostatic transmission module output end revolving speed torque respectively
Sensor, mechanical transmission unit rotary speed torque sensor, the connection of output end rotary speed torque sensor；
Programmable controller is separately connected the D/A module of input terminal PLC, the D/A module of output end PLC, hydraulic drive
Unit power intake electromagnetic clutch, mechanical transmission unit power intake electromagnetic clutch and speed setting controller；Wherein, defeated
Enter to hold the D/A module of PLC to pass through hydrostatic transmission module power intake DC motor speed regulating controller, machine driving list respectively
First power intake ac variable-frequency electric motor frequency converter and hydrostatic transmission module power intake dc motor, machine driving list
First power intake ac variable-frequency electric motor connection；The D/A module of output end PLC is controlled by output end DC motor speed regulating
Device is connect with output end dc motor；Speed setting controller is connect with confluence mechanism, tested hydrostatic transmission module respectively.
Preferably, hydrostatic transmission module power intake dc motor, the exchange of mechanical transmission unit power intake become
Frequency motor, output end dc motor are all connected with power supply.
Preferably, alarm, display, testing stand working station indicator is also respectively connected in industrial control computer.
Preferably, hydrostatic transmission module power intake dc motor is defeated by shaft coupling and hydrostatic transmission module power
Enter to hold electromagnetic clutch one end to connect, the hydraulic drive list of hydrostatic transmission module output end rotary speed torque sensor and confluence mechanism
First coupling spindle transmission connection.
Preferably, mechanical transmission unit power intake ac variable-frequency electric motor is dynamic by shaft coupling and mechanical transmission unit
The connection of power input terminal electromagnetic clutch one end, the other end of mechanical transmission unit power intake electromagnetic clutch pass through shaft coupling
It is sequentially connected with the mechanical transmission unit coupling spindle of confluence mechanism.
Preferably, confluence mechanism includes being made of planetary gear train gear ring, planetary gear train planetary gear and planetary gear train planet carrier
Planetary gear train and the fixation gear drive that is formed of gear A and gear B and clutch L1, clutch L2, clutch L3
With the executive component of clutch L4 and speed setting controller；The overhanging hydrostatic transmission module coupling spindle of confluence mechanism, machine driving list
First coupling spindle and confluence mechanism output shaft.The benefit of this design is that hydraulic work can be achieved in the engagement of confluence mechanism difference clutch
The rate stream working method different with mechanical output stream, to realize the covering of hydraulic mechanical composite transmission system hydrostatic transmission module
Overall performance test.
Preferably, testing stand working station indicator includes red, green, yellow three kinds of colored lights.The effect of this design is different face
The instruction content of color colored lights are as follows: set when setting amber light is indicated, abended when green light instruction, orderly closedown being arranged when normal work
It sets red light instruction while having audible alarm.
A kind of working method of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand, including
Following steps:
The operating mode of four clutched states in confluence mechanism is controlled by speed setting controller:
(1) hydrostatic transmission module forward direction confluence transmitting power mode
When clutch L2 and clutch L4 is engaged, mechanical transmission unit coupling spindle is connect with planetary gear train gear ring, hydraulic
Gear unit coupling spindle is connect with planetary gear train sun gear always by forming fixed gear drive by gear A and gear B, confluence
Mechanism output shaft is connect with planetary gear train planet carrier, and the revolving speed of confluence mechanism output shaft turns with hydrostatic transmission module coupling spindle at this time
Speed increase and increase, constitute output revolving speed with hydrostatic transmission module power intake dc motor output revolving speed increase
And the positive confluence transmission increased；
(2) hydrostatic transmission module, which reversely converges, transmits power mode
When clutch L1 and clutch L3 is engaged, mechanical transmission unit coupling spindle is connect with planetary gear train planet carrier, liquid
Pressure gear unit coupling spindle is connect with planetary gear train sun gear always by forming fixed gear drive by gear A and gear B, is converged
Stream mechanism output shaft is connect with planetary gear train gear ring, and the revolving speed of confluence mechanism output shaft turns with hydrostatic transmission module coupling spindle at this time
Speed increase and reduce, constitute output revolving speed with hydrostatic transmission module power intake dc motor output revolving speed increase
And the reversed confluence transmission reduced；
(3) the single transmitting power mode of hydrostatic transmission module
As clutch L1 and when clutch L2 engagement, the transmission ratio of planetary gear train is 1, and mechanical transmission unit coupling spindle is not
Carry out power transfer, the power input of hydrostatic transmission module coupling spindle, confluence mechanism output shaft power output；
And under industrial control computer and programmable controller two-step evolution, dc motor and AC frequency conversion
Motor realizes different operating modes:
(1) permanent torque mode: motor under the mode is under the adjusting control of control system and control program, according to turning
The feedback of the measured value of square is compared adjusting with given value, is adjusted automatically by frequency converter and controller by given control mode
It is whole, change the output torque of motor, is allowed to maintain setting value；
(2) permanent revolving speed mode: the motor under the mode is under the adjusting control of control system and control program, according to turning
The feedback of the measured value of speed is compared adjusting with given value, is adjusted automatically by frequency converter and controller by given control mode
It is whole, change the output revolving speed of motor, is allowed to maintain setting value；
(3) constant power mode: motor makes the output work of motor under the adjusting control of control system and control program
Rate maintains given value；
By industrial control computer and programmable controller two-step evolution mode, the dynamic characteristics of simulated engine is examination
It tests platform and power source is provided, keep the operating condition of test of tested hydrostatic transmission module and actual use operating condition closest, improve power train
Testing experiment ability, the expansion test scope of uniting require.
The beneficial effects of the present invention are:
1) a kind of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand of the present invention can be realized
Hydraulic mechanical composite transmission system hydrostatic transmission module performance test, Real-road Driving Cycle and operation by simulation application vehicle
Condition tests hydraulic machinery composite transmission hydrostatic transmission module transmission performance, and the liquid of one section He multistage may be implemented
The performance test of press mechanical pressing Composite Transmission hydrostatic transmission module performance test, the mechanically and hydraulically power flow of composite transmission
Proportion test and mechanically and hydraulically power flow Automatic Optimal allocation proportion, it is bent according to the universal characteristic of matched engine
Line, the final optimum combination allocation plan for realizing mechanically and hydraulically power flow, and the compound biography of hydraulic machinery is applied to go into operation in the future
The vehicle of dynamic system provides power performance optimization.
2) testing stand of the present invention can be also the performance test scheme of static hydraulic drive system and the property of speed changer complete machine
It can test offer test platform.
3) testing stand of the present invention uses speed closed loop control, and testing experiment revolving speed has good stability, and test platform structure is set
Reasonable, simple and reliable, safe and reliable to operation, save the cost is counted, configuring direct current motor can realize the function of inversely generating electricity, and realize
Energy-efficient purpose.
Detailed description of the invention
Fig. 1 is that power dividing hydraulic mechanical composite transmission system electricity of the present invention loads the signal of multifunctional testing test platform structure
Figure；
Fig. 2 is confluence mechanism drive mechanism schematic diagram of the present invention；
Fig. 3 is that power dividing hydraulic mechanical composite transmission system electricity of the present invention loads multifunctional testing testing stand control principle
Figure；
Wherein: the D/A module of 1- input terminal PLC；2- programmable controller (PLC)；3- testing stand working status indication
Lamp；4- display；5- alarm；6- industrial control computer；7- signal acquisition unit；8- flow sensor；9- pressure sensing
Device；The D/A module of 10- output end PLC；11- speed setting controller；12- output end DC motor speed regulating controller；13- output
Hold dc motor；14- output end rotary speed torque sensor；15- confluence mechanism；16- hydrostatic transmission module output end revolving speed is turned round
Square sensor；17- tested hydrostatic transmission module；18- mechanical transmission unit rotary speed torque sensor；19- hydraulic drive list
First input terminal rotary speed torque sensor；20- mechanical transmission unit power intake electromagnetic clutch；21- hydrostatic transmission module is dynamic
Power input terminal electromagnetic clutch；22- mechanical transmission unit power intake ac variable-frequency electric motor；23- power supply；24- liquid
Press gear unit power intake dc motor；25- hydrostatic transmission module power intake DC motor speed regulating controller；
26- mechanical transmission unit power intake ac variable-frequency electric motor frequency converter；
151- hydrostatic transmission module coupling spindle；152- gear A；153- clutch L1；154- clutch L2；155- planetary gear
It is gear ring；156- planetary gear train planetary gear；157- clutch L3；158- clutch L4；159- planetary gear train planet carrier；160- converges
Flow mechanism output shaft；161- planetary gear train sun gear；162- gear B；163- solar wheeling tooth wheel shaft；164- mechanical transmission unit connection
Spindle.
Specific embodiment
The present invention will be further described by way of example and in conjunction with the accompanying drawings, but not limited to this.
Embodiment 1:
As shown in Figure 1 to Figure 2, the present embodiment provides a kind of power dividing hydraulic mechanical composite transmission system electricity to load more function
Can be test bed, which mainly includes two broad aspect of mechanical part and control section:
Mechanical part includes:
The sequentially connected hydrostatic transmission module power intake dc motor 24 of input terminal, hydrostatic transmission module power are defeated
Enter to hold electromagnetic clutch 21, hydrostatic transmission module input terminal rotary speed torque sensor 19, tested hydrostatic transmission module 17, liquid
Press gear unit output end rotary speed torque sensor 16；
The sequentially connected mechanical transmission unit power intake ac variable-frequency electric motor 22 of input terminal, mechanical transmission unit are dynamic
Power input terminal electromagnetic clutch 20, mechanical transmission unit rotary speed torque sensor 18；
Hydrostatic transmission module output end rotary speed torque sensor 16, mechanical transmission unit rotary speed torque sensor 18 respectively with
The input shaft of confluence mechanism 15 is sequentially connected；The output shaft of confluence mechanism 15 is successively sequentially connected output end rotary speed torque sensor
14, output end dc motor 13；
Control section includes:
Industrial control computer 6, the signal acquisition unit 7 being separately connected with industrial control computer 6, program controller PLC
Device (PLC) 2；
Signal acquisition unit 7 is connect by pressure sensor 9, flow sensor 8 with tested hydrostatic transmission module 17；
Signal acquisition unit 7 also turns with hydrostatic transmission module input terminal rotary speed torque sensor 19, hydrostatic transmission module output end respectively
Fast torque sensor 16, mechanical transmission unit rotary speed torque sensor 18, output end rotary speed torque sensor 14 connect；
Programmable controller 2 is separately connected the D/A module 1 of input terminal PLC, the D/A module 10 of output end PLC, hydraulic
Gear unit power intake electromagnetic clutch 21, mechanical transmission unit power intake electromagnetic clutch 20 and speed setting controller
11；Wherein, the D/A module 1 of input terminal PLC passes through hydrostatic transmission module power intake DC motor speed regulating controller respectively
25, mechanical transmission unit power intake ac variable-frequency electric motor frequency converter 26 and hydrostatic transmission module power intake direct current
Motivation 24, mechanical transmission unit power intake ac variable-frequency electric motor 22 connect；The D/A module 10 of output end PLC passes through defeated
Outlet DC motor speed regulating controller 12 is connect with output end dc motor 13；Speed setting controller 11 respectively with confluence mechanism
15, tested hydrostatic transmission module 17 connects.
Hydrostatic transmission module power intake dc motor 24, mechanical transmission unit power intake AC frequency conversion are electronic
Machine 22, output end dc motor 13 are all connected with power supply 23.
Hydrostatic transmission module power intake dc motor 24 passes through shaft coupling and hydrostatic transmission module power intake
The connection of 21 one end of electromagnetic clutch, 19 one end of hydrostatic transmission module input terminal rotary speed torque sensor and hydrostatic transmission module power
Input terminal electromagnetic clutch 21 connects, and 19 other end of hydrostatic transmission module input terminal rotary speed torque sensor and is tested hydraulic biography
Moving cell 17 inputs axis connection, is tested 17 output shaft of hydrostatic transmission module and hydrostatic transmission module output end revolving speed torque sensing
The connection of 16 one end of device, the hydraulic drive list of hydrostatic transmission module output end rotary speed torque sensor 16 other end and confluence mechanism 15
First coupling spindle, pressure sensor 9 and flow sensor 8 are connected to tested hydrostatic transmission module 17；Electrical control coupling part
Hydrostatic transmission module power intake DC motor speed regulating controller 25 output end and hydrostatic transmission module power input
Hold 24 electrical control of dc motor connection, 25 inputs of hydrostatic transmission module power intake DC motor speed regulating controller
End is connect with the 1 output end electrical control of D/A module of input terminal PLC, 1 input terminal of D/A module and programmable of input terminal PLC
2 electrical control of controller (PLC) connection, hydrostatic transmission module power intake electromagnetic clutch 21 and programmable controller
(PLC) 2 connection, hydrostatic transmission module input terminal rotary speed torque sensor 19, pressure sensor 9, flow sensor 8 and hydraulic biography
Moving cell output end rotary speed torque sensor 16 is connect with signal acquisition unit 7, speed setting controller 11 and tested hydraulic drive
Unit 17 connects；
Mechanical transmission unit power intake ac variable-frequency electric motor 22 is defeated by shaft coupling and mechanical transmission unit power
Enter to hold 20 one end of electromagnetic clutch to connect, the other end of mechanical transmission unit power intake electromagnetic clutch 20 passes through shaft coupling
Connect the mechanical transmission unit coupling spindle of confluence mechanism 15；The exchange of electrical control coupling part mechanical transmission unit power intake
Adjustable frequency motor frequency converter 26 is connect with 22 electrical control of input terminal ac variable-frequency electric motor, ac variable-frequency electric motor frequency converter 26
Input terminal, mechanical transmission unit power intake electromagnetic clutch 20 and input terminal PLC 1 output end electric-controlled of D/A module
System connection, mechanical transmission unit rotary speed torque sensor 18 are connect with signal acquisition unit 7.
As shown in Fig. 2, the overhanging hydrostatic transmission module coupling spindle 151 of confluence mechanism 15,164 and of mechanical transmission unit coupling spindle
160 3 axis of confluence mechanism output shaft, it is internal that fixed gear drive, the planetary gear train sun are formed by gear A 152 and gear B 162
Wheel 161, planetary gear train gear ring 155, planetary gear train planetary gear 156 and planetary gear train planet carrier 159 form planetary gear train, speed regulation control
The executive component of device processed: clutch L1153, clutch L2154, clutch L3157 and clutch L4158.Confluence mechanism is different
Clutch engagement can be achieved hydraulic power stream it is different with mechanical output stream converge mode, to realize the compound biography of hydraulic machinery
The covering overall performance test of dynamic system hydrostatic transmission module.
Alarm 5, display 4, testing stand working station indicator 3 is also respectively connected in industrial control computer 6.Test
Platform working station indicator 3 includes red, green, yellow three kinds of colored lights.The instruction content of different colours colored lights are as follows: be arranged when normal work
Setting red light indicates while having audible alarm when setting amber light is indicated, abended when green light instruction, orderly closedown.
Embodiment 2:
As shown in figure 3, a kind of work of power dividing hydraulic mechanical composite transmission system electricity load multifunctional testing testing stand
Make method, using the testing stand of 1 technical solution of embodiment offer, specific operation process is as follows:
The operating mode of four clutched states in confluence mechanism 15 is controlled by speed setting controller 11:
(1) hydrostatic transmission module forward direction confluence transmitting power mode
When clutch L2153 and clutch L4157 is engaged, mechanical transmission unit coupling spindle 164 and planetary gear train gear ring
155 connection, hydrostatic transmission module coupling spindle 151 by by gear A 152 and gear B 162 is formed fixation gear drive always with row
Star wheel series sun gear 161 connects, and confluence mechanism output shaft 160 is connect with planetary gear train planet carrier 159, and confluence mechanism exports at this time
The revolving speed of axis 160 increases with the increase of 151 revolving speed of hydrostatic transmission module coupling spindle, constitutes output revolving speed with hydraulic drive list
The positive confluence that first hydraulic motor exports the increase of revolving speed and increases is driven.
(2) hydrostatic transmission module, which reversely converges, transmits power mode
When clutch L1154 and clutch L3158 is engaged, mechanical transmission unit coupling spindle 164 and planetary gear train planet
Frame 159 connect, hydrostatic transmission module coupling spindle 151 by by gear A 152 and gear B 162 is formed fixation gear drive always with
Planetary gear train sun gear 161 connects, and confluence mechanism output shaft 160 is connect with planetary gear train gear ring 155, and confluence mechanism exports at this time
The revolving speed of axis 160 reduces with the increase of 151 revolving speed of hydrostatic transmission module coupling spindle, constitutes output revolving speed with hydraulic drive list
The reversed confluence that first hydraulic motor exports the increase of revolving speed and reduces is driven.
(3) the single transmitting power mode of hydrostatic transmission module
As clutch L1154 and when clutch L2153 engagement, the transmission ratio of planetary gear train is 1, mechanical transmission unit connection
For spindle 164 without power transfer, the power input of hydrostatic transmission module coupling spindle 151,160 power of confluence mechanism output shaft are defeated
Out.
Power intake hydraulic drive part selects hydrostatic transmission module power intake dc motor 24 to be used as power
Source, mechanical driving part are selected mechanical transmission unit power intake ac variable-frequency electric motor 22 to be used as power source, be may be implemented
The speed ratio of hydraulic drive and mechanically operated input terminal is arbitrarily adjusted, by the adjusting of speed ratio, realize speed ratio edit automatically and
Compare, test determines the hydrostatic transmission module performance test and optimal proportion range of distribution for meeting entire composite transmission, together
When according to select matching engine universal characteristic curve establishment control program, pass through industrial control computer 6 and programmable control
2 two-step evolution mode of device (PLC) processed, can provide power source by testing stand of the dynamic characteristics of simulated engine, make to be tested as far as possible
Operating condition of test and the actual use operating condition for trying hydrostatic transmission module are closest, improve transmission system testing experiment ability, expand and survey
Try the requirement of range；According to the drive characteristic of hydraulic mechanical composite transmission system, hydrostatic transmission module will appear power flow reflux
The phenomenon that circulation, so hydraulic drive part uses dc motor as power source, the direct current after emergent power flows back to
Motivation can realize generating function, by the electric energy feedback of power generation into power supply, have the characteristics that energy conservation；Testing stand is surveyed indoors
The exhaust emissions that engine is avoided in the case where examination has the characteristics that environmental protection.
Power output end load simulating device loads dc motor 13 using output end, is used to simulating vehicle work road conditions
Load resistance passes through industrial control computer 6 and programmable controller (PLC) 2 two-step evolution mode, the dc motor of composition
Loading system tool is there are two types of operating status, both generating state and motoring condition, by the electric energy feedback of power generation into power supply, together
Sample has the characteristics that energy conservation.Meanwhile control system is using industrial control computer and the two-step evolution side programmable controller (PLC)
Formula, the variation of the power of power demand field in simulating vehicle power drive system, to improve transmission system test capability, expand
The requirement of the scope of application.
Under industrial control computer 6 and programmable controller (PLC) 2 two-step evolution, dc motor and AC electrical
Different operating modes may be implemented in machine:
(1) permanent torque mode.Motor under the mode is under the adjusting control of control system and control program, according to turning
The feedback of the measured value of square is compared adjusting with given value, is adjusted automatically by frequency converter and controller by given control mode
It is whole, change the output torque of motor, is allowed to maintain setting value.
(2) permanent revolving speed mode.Motor under the mode is under the adjusting control of control system and control program, according to turning
The feedback of the measured value of speed is compared adjusting with given value, is adjusted automatically by frequency converter and controller by given control mode
It is whole, change the output revolving speed of motor, is allowed to maintain setting value.
(3) constant power mode.Motor makes the output work of motor under the adjusting control of control system and control program
Rate maintains given value.
Permanent revolving speed mode is arranged in the motor of input terminal hydrostatic transmission module and mechanical transmission unit, and output end load is electronic
Machine simulates three kinds of actual condition setting permanent torque, permanent revolving speed and invariable power operating modes；Confluence mechanism is arranged according to requirement of experiment
Hydrostatic transmission module forward direction confluence transmitting power mode realizes performance when test hydrostatic transmission module forward direction confluence transmitting power
Test；The confluence mechanism hydrostatic transmission module transmitting power mode that reversely converges realizes that test hydrostatic transmission module reversely converges transmitting
Performance test when power；When setting confluence mechanism mutually switches from both the above operating mode, it is hydraulic multistage can be tested
The performance test of mechanical composite transmission hydrostatic transmission module.When the single transmitting power of hydrostatic transmission module is arranged in confluence mechanism
, it can be achieved that the performance test of pure Hydraulic Power Transmission System when mode.
Testing stand working station indicator is set as red, green, yellow three kinds of colors.Indicate content are as follows: be arranged when normal work
Setting red light indicates while having audible alarm when setting amber light is indicated, abended when green light instruction, orderly closedown.Equipment alarm
While using indicator light, the text that equipment computer is shown and sound instruction, until pressing alarm release button.
It may be implemented dynamically load by controlling program, simulate hydraulic machinery composite transmission actual condition and defined
State of cyclic operation；Control system and control program can be to input terminal motor and output end electricity according to different testing experiment schemes
Different settings are arranged in the revolving speed of motivation, torque, using close-loop control mode, can fully meet hydraulic machinery composite power biography
The performance test of dynamic system hydrostatic transmission module and the machine driving power flow of entire transmission system and hydraulic drive power flow
Ratio test；According to actual requirement during test, it is good that operator will control program debugging, press start button, can
To realize the control and performance test of overall process；Each measurement numerical value and analysis result in test pass through industrial control computer
It can display in real time, handle, store and print with display.It, can letter using this testing stand compared with traditional testing stand
Just reliably carry out hydraulic mechanical composite transmission system hydrostatic transmission module performance test, save a large amount of test period and at
This.
Structure and working principle of the invention is explained with specific embodiment above, the invention is not limited to the above realities
Example is applied, according to above-mentioned description, any modification, replacement and improvement done within the spirit and principles of the present invention
Deng should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of power dividing hydraulic mechanical composite transmission system electricity loads multifunctional testing testing stand, including mechanical part and control
Part processed, it is characterised in that:
Mechanical part includes:
The sequentially connected hydrostatic transmission module power intake dc motor of input terminal, hydrostatic transmission module power intake electricity
Magnet clutch, hydrostatic transmission module input terminal rotary speed torque sensor, tested hydrostatic transmission module, hydrostatic transmission module are defeated
Outlet rotary speed torque sensor；
The sequentially connected mechanical transmission unit power intake ac variable-frequency electric motor of input terminal, the input of mechanical transmission unit power
Hold electromagnetic clutch, mechanical transmission unit rotary speed torque sensor；
Hydrostatic transmission module output end rotary speed torque sensor, mechanical transmission unit rotary speed torque sensor respectively with confluence mechanism
Input shaft transmission connection；The output shaft of confluence mechanism is successively sequentially connected output end rotary speed torque sensor, output end direct current
Motor；
Control section includes:
Industrial control computer, the signal acquisition unit being separately connected with industrial control computer, programmable controller；
Signal acquisition unit is connect by pressure sensor, flow sensor with tested hydrostatic transmission module；Signal acquisition
Unit also respectively with hydrostatic transmission module input terminal rotary speed torque sensor, hydrostatic transmission module output end revolving speed torque sensing
Device, mechanical transmission unit rotary speed torque sensor, the connection of output end rotary speed torque sensor；
Programmable controller is separately connected the D/A module of input terminal PLC, the D/A module of output end PLC, hydrostatic transmission module
Power intake electromagnetic clutch, mechanical transmission unit power intake electromagnetic clutch and speed setting controller；Wherein, input terminal
It is dynamic that the D/A module of PLC passes through hydrostatic transmission module power intake DC motor speed regulating controller, mechanical transmission unit respectively
Power input terminal ac variable-frequency electric motor frequency converter and hydrostatic transmission module power intake dc motor, mechanical transmission unit are dynamic
The connection of power input terminal ac variable-frequency electric motor；The D/A module of output end PLC by output end DC motor speed regulating controller with
The connection of output end dc motor；Speed setting controller is connect with confluence mechanism, tested hydrostatic transmission module respectively.
2. power dividing hydraulic mechanical composite transmission system electricity as described in claim 1 loads multifunctional testing testing stand,
It is characterized in that, hydrostatic transmission module power intake dc motor, mechanical transmission unit power intake AC frequency conversion are electronic
Machine, output end dc motor are all connected with power supply.
3. power dividing hydraulic mechanical composite transmission system electricity as described in claim 1 loads multifunctional testing testing stand,
It is characterized in that, alarm, display, testing stand working station indicator is also respectively connected in industrial control computer.
4. power dividing hydraulic mechanical composite transmission system electricity as described in claim 1 loads multifunctional testing testing stand,
It is characterized in that, hydrostatic transmission module power intake dc motor passes through shaft coupling and hydrostatic transmission module power intake electricity
The connection of magnet clutch one end, hydrostatic transmission module output end rotary speed torque sensor couple with the hydrostatic transmission module of confluence mechanism
Axis transmission connection.
5. power dividing hydraulic mechanical composite transmission system electricity as claimed in claim 4 loads multifunctional testing testing stand,
It is characterized in that, mechanical transmission unit power intake ac variable-frequency electric motor is inputted by shaft coupling and mechanical transmission unit power
The connection of electromagnetic clutch one end is held, the other end of mechanical transmission unit power intake electromagnetic clutch passes through shaft coupling and confluence
The mechanical transmission unit coupling spindle of mechanism is sequentially connected.
6. power dividing hydraulic mechanical composite transmission system electricity as claimed in claim 5 loads multifunctional testing testing stand,
It is characterized in that, confluence mechanism includes the planet being made of planetary gear train gear ring, planetary gear train planetary gear and planetary gear train planet carrier
The fixation gear drive and clutch L1, clutch L2, clutch L3 and clutch that train and gear A and gear B are formed
The executive component of device L4 and speed setting controller；The overhanging hydrostatic transmission module coupling spindle of confluence mechanism, mechanical transmission unit connection
Axis and confluence mechanism output shaft.
7. power dividing hydraulic mechanical composite transmission system electricity as claimed in claim 3 loads multifunctional testing testing stand,
It is characterized in that, testing stand working station indicator includes red, green, yellow three kinds of colored lights.
8. a kind of as the described in any item power dividing hydraulic mechanical composite transmission system electricity of claim 1-7 load multi-functional survey
Try the working method of testing stand, comprising the following steps:
The operating mode of four clutched states in confluence mechanism is controlled by speed setting controller:
(1) hydrostatic transmission module forward direction confluence transmitting power mode
When clutch L2 and clutch L4 is engaged, mechanical transmission unit coupling spindle is connect with planetary gear train gear ring, hydraulic drive
Element connection axis is connect with planetary gear train sun gear always by forming fixed gear drive by gear A and gear B, confluence mechanism
Output shaft is connect with planetary gear train planet carrier, and the revolving speed of confluence mechanism output shaft is with hydrostatic transmission module coupling spindle revolving speed at this time
Increase and increase, constitutes output revolving speed and increase with the increase of hydrostatic transmission module power intake dc motor output revolving speed
Big positive confluence transmission；
(2) hydrostatic transmission module, which reversely converges, transmits power mode
When clutch L1 and clutch L3 is engaged, mechanical transmission unit coupling spindle is connect with planetary gear train planet carrier, hydraulic biography
Moving cell coupling spindle is connect with planetary gear train sun gear always by forming fixed gear drive by gear A and gear B, and converge machine
Structure output shaft is connect with planetary gear train gear ring, and the revolving speed of confluence mechanism output shaft is with hydrostatic transmission module coupling spindle revolving speed at this time
Increase and reduce, constitutes output revolving speed and subtract with the increase of hydrostatic transmission module power intake dc motor output revolving speed
Small reversed confluence transmission；
(3) the single transmitting power mode of hydrostatic transmission module
As clutch L1 and when clutch L2 engagement, the transmission ratio of planetary gear train is 1, mechanical transmission unit coupling spindle without
Power transfer, the power input of hydrostatic transmission module coupling spindle, confluence mechanism output shaft power output；
And under industrial control computer and programmable controller two-step evolution, dc motor and AC frequency conversion are electronic
Machine realizes different operating modes:
(1) permanent torque mode: the motor under the mode is under the adjusting control of control system and control program, according to torque
The feedback of measured value is compared adjusting with given value, presses given control mode adjust automatically by frequency converter and controller,
The output torque for changing motor, is allowed to maintain setting value；
(2) permanent revolving speed mode: the motor under the mode is under the adjusting control of control system and control program, according to revolving speed
The feedback of measured value is compared adjusting with given value, presses given control mode adjust automatically by frequency converter and controller,
The output revolving speed for changing motor, is allowed to maintain setting value；
(3) constant power mode: motor ties up the output power of motor under the adjusting control of control system and control program
It holds in given value；
By industrial control computer and programmable controller two-step evolution mode, the dynamic characteristics of simulated engine is testing stand
Power source is provided, keeps the operating condition of test of tested hydrostatic transmission module and actual use operating condition closest, improves power train unified test
It tries test capability, expand test scope requirement.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910097716.0A CN109883694B (en) | 2019-01-31 | 2019-01-31 | Power-split hydraulic mechanical composite transmission system electric loading multifunctional test bench and application thereof |
| AU2019426605A AU2019426605B2 (en) | 2019-01-31 | 2019-07-05 | Electric loading multifunctional test bench for power-dividing hydraulic-mechanical composite transmission system and application thereof |
| CA3107975A CA3107975C (en) | 2019-01-31 | 2019-07-05 | Electric loading multifunctional test bench for power-dividing hydraulic-mechanical composite transmission system and application thereof |
| PCT/CN2019/094772 WO2020155557A1 (en) | 2019-01-31 | 2019-07-05 | Electric loading multifunctional test bench for power-dividing hydraulic-mechanical composite transmission system and application thereof |
| ZA2021/00097A ZA202100097B (en) | 2019-01-31 | 2021-01-06 | Electric loading multifunctional test bench for power-dividing hydraulic-mechanical composite transmission system and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910097716.0A CN109883694B (en) | 2019-01-31 | 2019-01-31 | Power-split hydraulic mechanical composite transmission system electric loading multifunctional test bench and application thereof |
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| CN109883694B CN109883694B (en) | 2020-09-22 |
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| CN (1) | CN109883694B (en) |
| AU (1) | AU2019426605B2 (en) |
| CA (1) | CA3107975C (en) |
| WO (1) | WO2020155557A1 (en) |
| ZA (1) | ZA202100097B (en) |
Cited By (4)
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| CN110455531A (en) * | 2019-08-14 | 2019-11-15 | 山东科技大学 | A kind of power dividing type hydraulic mechanical composite transmission system multifunctional is test bed and its applies |
| CN110469560A (en) * | 2019-08-14 | 2019-11-19 | 山东科技大学 | A kind of interchangeable section of collector-shoe gear and its application |
| WO2020155557A1 (en) * | 2019-01-31 | 2020-08-06 | 山东科技大学 | Electric loading multifunctional test bench for power-dividing hydraulic-mechanical composite transmission system and application thereof |
| CN112378650A (en) * | 2020-11-27 | 2021-02-19 | 上海索达传动机械有限公司 | Vehicle transmission system test bench |
Families Citing this family (2)
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| CN112622599B (en) * | 2020-12-28 | 2022-06-28 | 潍柴动力股份有限公司 | Mechanical-hydraulic transmission system, mode switching control method thereof and engineering machinery |
| CN112945593B (en) * | 2020-12-30 | 2022-07-29 | 中汽研汽车检验中心（天津）有限公司 | Hydraulic simulation test system and test method for non-road mechanical working conditions |
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Also Published As
| Publication number | Publication date |
|---|---|
| CA3107975C (en) | 2023-02-14 |
| CN109883694B (en) | 2020-09-22 |
| CA3107975A1 (en) | 2020-08-06 |
| ZA202100097B (en) | 2021-10-27 |
| AU2019426605A1 (en) | 2021-01-21 |
| AU2019426605B2 (en) | 2022-02-10 |
| WO2020155557A1 (en) | 2020-08-06 |
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