CN203937514U - A kind of many wheel engineering truck fluid pressure drive devices - Google Patents
A kind of many wheel engineering truck fluid pressure drive devices Download PDFInfo
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- CN203937514U CN203937514U CN201420343516.1U CN201420343516U CN203937514U CN 203937514 U CN203937514 U CN 203937514U CN 201420343516 U CN201420343516 U CN 201420343516U CN 203937514 U CN203937514 U CN 203937514U
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Abstract
A kind of many wheel engineering truck fluid pressure drive devices; be characterized in; many wheel engineering truck fluid pressure drive devices are made up of drive system, control system and actuating system; drive system is made up of driving engine, fix-displacement pump, proportional pressure control valve, fix-displacement pump check valve, fil; control system by solenoid directional control valve, solenoid-operated proportional change-over valve, wheel speed sensor, comparator, pid control module, turn to regulating element, controller to form, actuating system is made up of left and right two-way quantitative motor and fender guard thereof, left and right wheels retarder, left and right wheels.The beneficial effects of the utility model are, this drive system is easy to operate, compared with traditional pump control system, vehicle launch, speed-change process are steadily, response is fast, control accuracy is high, in feedback channel, introduce proportionality coefficient k, steering procedure response is sensitive, and left and right two vehicle wheel rotational speed couplings are reasonable, control is accurate, and each wheels can be realized independent steering, and steering manipulation is good.
Description
Technical field
The utility model relates to hydraulic transmission and control system, especially a kind of many wheel engineering truck fluid pressure drive devices.
Background technology
At present, by change speed gear box, transmission shaft, the diff mechanical drive mode forming that combines, because it has stable and accurate transmitting ratio, in mini engineering driver for vehicle, be widely applied.But for large engineering vehicle, if high ferro beam transportation vehicle, lifting beam machine, container lorry etc. are because its structure is special, load carrying ability is huge, power distribution requirement is high, traditional mechanical drive can not meet it and drive requirement.Hydrostatic drive is with the advantage such as its compact conformation, flexible arrangement, speed-regulating range width, power-weight ratio be large, just becoming the developing direction of large engineering vehicle type of drive, wherein the application of controllable capacity pump-variable-dis-placement motor closed system is comparatively extensive, but this system architecture complexity, expensive, and control principle belongs to pump control open loop control, response is slow, precision is lower.
Summary of the invention
For addressing the above problem, the utility model provides a kind of many wheel engineering truck fluid pressure drive devices, it is fix-displacement pump-fixed displacement motor fluid power system of electro-hydraulic proportional valve closed loop control, this system can effectively reduce costs, simplified structure, and can realize many wheels independent steering, the utility model uses valve control system to replace conventional pump control system, greatly improve system response time, controller performance is greatly improved.
The technical scheme that the utility model technical solution problem adopts is: a kind of many wheel engineering truck fluid pressure drive devices of invention, be characterized in, many wheel engineering truck fluid pressure drive devices have a driving engine, engine output shaft connects a fix-displacement pump, the oil inlet of fix-displacement pump connects petrol storage tank, the oil outlet of fix-displacement pump connects a proportional pressure control valve, the outlet of proportional pressure control valve connects petrol storage tank, the oil outlet of fix-displacement pump also connects a fil by fix-displacement pump check valve, fil connects respectively the P mouth of solenoid directional control valve of a 3-position 4-way meta O type and the P mouth of the solenoid-operated proportional change-over valve of a 3-position 4-way meta O type, the T mouth of solenoid directional control valve is connected with radiator with the T mouth of solenoid-operated proportional change-over valve, radiator connects petrol storage tank, the A mouth of solenoid directional control valve is connected with the two ends of revolver two-way quantitative motor respectively with B mouth, the A mouth of solenoid-operated proportional change-over valve is connected with right two ends of taking turns two-way quantitative motor respectively with B mouth, the A mouth of solenoid directional control valve connects the P2 mouth of a left shuttle valve, the B mouth of solenoid directional control valve connects the P1 mouth of left shuttle valve, the A mouth of left shuttle valve connects left safety valve entrance, left safety valve outlet connects respectively petrol storage tank, the entrance of A check valve and B check valve, the A mouth of the outlet of A check valve and solenoid directional control valve is connected, the B mouth of the outlet of B check valve and solenoid directional control valve is connected, the dynamical axis of revolver two-way quantitative motor connects left wheel retarder, left wheel retarder connects left wheel, the A mouth of solenoid-operated proportional change-over valve connects the P2 mouth of a right shuttle valve, the B mouth of solenoid-operated proportional change-over valve connects the P1 mouth of right shuttle valve, the A mouth of right shuttle valve connects right safety valve entrance, right safety valve outlet connects respectively petrol storage tank, the entrance of C check valve and D check valve, the A mouth of the outlet of C check valve and solenoid-operated proportional change-over valve is connected, the B mouth of the outlet of D check valve and solenoid-operated proportional change-over valve is connected, right dynamical axis of taking turns two-way quantitative motor connects right wheel decelerates device, right wheel decelerates device connects right wheel, revolver tachogen is installed on left wheel, revolver tachogen connects a comparator by wire, right wheel speed sensor is installed on right wheel, right wheel speed sensor is connected and is turned to regulating element by wire, turn to regulating element to connect comparator by wire, comparator connects pid control module by wire, pid control module connects solenoid-operated proportional change-over valve by wire, proportional pressure control valve, solenoid directional control valve, turn to regulating element to be connected with a controller by wire.
The beneficial effects of the utility model are, this drive system is easy to operate, compared with traditional pump control system, vehicle launch, speed-change process are steadily, response is fast, control accuracy is high, in feedback channel, introduce proportionality coefficient k, steering procedure response is sensitive, and left and right two vehicle wheel rotational speed couplings are reasonable, control is accurate, and each wheels can be realized independent steering, and steering manipulation is good.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing is structure principle chart of the present utility model
1 right wheel in figure, 2 right wheel decelerates devices, the 3 right two-way quantitative motors of taking turns, 4 right shuttle valves, 5 right safety valves, 6C check valve, 7D check valve, 8 solenoid-operated proportional change-over valves, 9 fils, 10 fix-displacement pump check valves, 11 radiatores, 12 petrol storage tanks, 13 proportional pressure control valves, 14 fix-displacement pump, 15 driving engines, 16 control system, 17 solenoid directional control valves, 18B check valve, 19A check valve, 20 left safety valves, 21 left shuttle valves, 22 revolver two-way quantitative motors, 23 left wheel retarders, 24 left wheels, 25 revolver tachogens, 26 comparators, 27 turn to regulating element, 28PID control module, 29 right wheel speed sensors.
Detailed description of the invention
As shown in drawings, driving engine 15 output shafts connect fix-displacement pump 14, the oil inlet of fix-displacement pump 14 connects petrol storage tank 12, the oil outlet of fix-displacement pump 15 connects proportional pressure control valve 13, the outlet of proportional pressure control valve 13 connects petrol storage tank 12, the oil outlet of fix-displacement pump 14 also connects fil 9 by fix-displacement pump check valve 10, fil 9 connects respectively the P mouth of solenoid directional control valve 17 of a 3-position 4-way meta O type and the P mouth of the solenoid-operated proportional change-over valve 8 of a 3-position 4-way meta O type, the T mouth of solenoid directional control valve 17 is connected with radiator 11 with the T mouth of solenoid-operated proportional change-over valve 8, radiator 11 connects petrol storage tank 12, the A mouth of solenoid directional control valve 17 is connected with the two ends of revolver two-way quantitative motor 22 respectively with B mouth, the A mouth of solenoid-operated proportional change-over valve 8 is connected with right two ends of taking turns two-way quantitative motor 3 respectively with B mouth, the A mouth of solenoid directional control valve 17 connects the P2 mouth of left shuttle valve 21, the B mouth of solenoid directional control valve 17 connects the P1 mouth of left shuttle valve 21, the A mouth of left shuttle valve 21 connects left safety valve 20 entrances, left safety valve 20 exports and connects respectively petrol storage tank 12, the entrance of A check valve 19 and B check valve 18, the A mouth of the outlet of A check valve 19 and solenoid directional control valve 17 is connected, the B mouth of the outlet of B check valve 18 and solenoid directional control valve 17 is connected, the dynamical axis of revolver two-way quantitative motor 22 connects left wheel retarder 23, left wheel retarder 23 connects left wheel 24, the A mouth of solenoid-operated proportional change-over valve 8 connects the P2 mouth of right shuttle valve 4, the B mouth of solenoid-operated proportional change-over valve 8 connects the P1 mouth of right shuttle valve 4, the A mouth of right shuttle valve 4 connects right safety valve 5 entrances, right safety valve 5 exports and connects respectively petrol storage tank 12, the entrance of C check valve 6 and D check valve 7, the A mouth of the outlet of C check valve 6 and solenoid-operated proportional change-over valve 8 is connected, the B mouth of the outlet of D check valve 7 and solenoid-operated proportional change-over valve 8 is connected, right dynamical axis of taking turns two-way quantitative motor 3 connects right wheel decelerates device 2, right wheel decelerates device 2 connects right wheel 1, revolver tachogen 25 is installed on left wheel 24, revolver tachogen 25 connects a comparator 26 by wire, right wheel speed sensor 29 is installed on right wheel 1, right wheel speed sensor 29 is connected and is turned to regulating element 27 by wire, turn to regulating element 27 to connect comparator 26 by wire, comparator 26 connects pid control module 28 by wire, pid control module 28 connects solenoid-operated proportional change-over valve 8 by wire, proportional pressure control valve 13, solenoid directional control valve 17, turn to regulating element 27 to be connected with controller 16 by wire.
When work, driving engine 15 drives fix-displacement pump 14, fix-displacement pump 14 is from petrol storage tank 12 inhalant liquid force feeds, hydraulic oil exports and enters respectively fix-displacement pump check valve 10 and proportional pressure control valve 13 from fix-displacement pump 14, the overflow oil mass of controller 16 control ratio by pass valves 13, can change the flow that hydraulic oil flows to fix-displacement pump check valve 10, thereby control the moving velocity of vehicle, fix-displacement pump check valve 10 prevents fluid suck-back, hydraulic oil flows to fil 9 from fix-displacement pump check valve 10, fil 9 is for filtering fluid, avoid fluid to sneak into the precision of impurity effect Hydraulic Elements, hydraulic oil flows to respectively solenoid directional control valve 17 and solenoid-operated proportional change-over valve 8 from fil 9, the spool of solenoid directional control valve 17 and solenoid-operated proportional change-over valve 8 does not have right hydraulic oil to flow through in the time of meta, change-over valve locking, left wheel 22 and right wheel 3 stop operating.When solenoid directional control valve 17 is in left when position, hydraulic oil enters revolver two-way quantitative motor 22 through right wing, Jing Zuo flows back on road solenoid directional control valve 17, flow into petrol storage tank 12 through radiator 11 again, drive revolver two-way quantitative motor 22 forwards outputting power, the power of output slows down and improves moment of torsion rear drive left wheel 24 forwards and advance through left wheel retarder 23.When solenoid directional control valve 17 is in right when position, hydraulic oil Jing Zuo road enters revolver two-way quantitative motor 22, flow back to solenoid directional control valve 17 through right wing, flow into petrol storage tank 12 through radiator 11 again, drive revolver two-way quantitative motor 22 outputting power that reverses, the power of output drives left wheel 24 reversions to retreat through left wheel retarder 23.The effect of radiator 11 is that the heat producing during by hydraulic working oil sheds, to ensure that hydraulic oil works at suitable temperature.The principle that the electromagnetism ratio of changing is controlled right wheel 1 to valve 8 is the same.When right wheel 1 and left wheel 24 rotating speeds when identical vehicle keep straight on, turn inside diameter walking in the time that speed discrepancy appears in right wheel 1 and left wheel 24, the larger vehicle turn radius of speed discrepancy is less.
When left wheel in Vehicle Driving Cycle 24 occurs skidding or when the burst operating mode such as unsettled, revolver two-way quantitative motor 22 can improve suddenly because losing idling speed, oil circuit may produce negative pressure, for avoiding oil circuit to produce air pocket, cavitation, A check valve 19 and B check valve 18 can be negative-pressure oil line repairing, and the action principle of C check valve 6 and D check valve 7 is identical with B check valve 18 with A check valve 19.
In the time of Vehicle Driving Cycle, left wheel 24 runs into the burst resistances such as obstacle; the too high damage revolver of hydraulic system pressure two-way quantitative motor 22; left shuttle valve 21 and left safety valve 20 cooperatings; when system pressure is during higher than left safety valve 20 settling pressure; the fluid of revolver two-way quantitative motor 22 flows back to fuel tank through left shuttle valve 21 and left safety valve 20, thereby has protected revolver two-way quantitative motor 22.Right protection philosophy of taking turns two-way quantitative motor 3 is consistent with wheel two-way quantitative motor 22.
Left wheel tachogen 25 is for detection of the rotating speed of left wheel 24, right wheel speed sensor 29 is for detection of the rotating speed of right wheel 1, comparator 26 is for comparing left wheel 24 rotating speeds and turning to regulating element 27 output speed differences, pid control module 28 regulates the openings of sizes of solenoid-operated proportional change-over valve 8 in real time according to the output bias of comparator 26, flow through revolver two-way quantitative motor 22 and right flow proportional of taking turns two-way quantitative motor 3 pressure oils by regulating the flow of right fixed displacement motor 3 oil inlets to regulate, thereby regulate the rotating speed of left wheel 24 and right wheel 1, in the time that the output bias of comparator 26 gradually becomes zero, pid control module 28 stops the adjustment to solenoid-operated proportional change-over valve 8, thereby realize closed loop control.The effect that turns to regulating element 27 is that the output signal of right wheel speed sensor 29 is made to transformation of scale, ratio value K is that 1 o'clock vehicle is kept straight on, ratio value K is greater than 1 o'clock vehicle right-hand corner, and ratio value K is less than 1 o'clock vehicle turnon left, and the turn radius of ratio value K and 1 the larger vehicle of deviate is less.
Controller 16 be mainly used in control ratio by pass valve 13 spillway discharge, change the spool position of solenoid directional control valve 17, in real time regulating rotary is to the ratio value K of regulating element 27, and then realize wheel and keep straight on and turn to, proportional pressure control valve 13 is mainly used in the flow of control system hydraulic oil, thereby controls vehicle wheel rotational speed.The quantity that many wheel engineering trucks can be selected as required that left wheel 24 and right wheel 1 are installed and drive loop.
Claims (1)
1. the engineering truck of wheel more than kind fluid pressure drive device, it is characterized in that: take turns engineering truck fluid pressure drive device has a driving engine more, described engine output shaft connects a fix-displacement pump, the oil inlet of described fix-displacement pump connects petrol storage tank, the oil outlet of described fix-displacement pump connects a proportional pressure control valve, the outlet of described proportional pressure control valve connects described petrol storage tank, the oil outlet of described fix-displacement pump also connects a fil by fix-displacement pump check valve, described fil connects respectively the P mouth of solenoid directional control valve of a 3-position 4-way meta O type and the P mouth of the solenoid-operated proportional change-over valve of a 3-position 4-way meta O type, the T mouth of described solenoid directional control valve is connected with radiator with the T mouth of described solenoid-operated proportional change-over valve, described radiator connects described petrol storage tank, the A mouth of described solenoid directional control valve is connected with the two ends of revolver two-way quantitative motor respectively with B mouth, the A mouth of described solenoid-operated proportional change-over valve is connected with right two ends of taking turns two-way quantitative motor respectively with B mouth, the A mouth of described solenoid directional control valve connects the P2 mouth of a left shuttle valve, the B mouth of described solenoid directional control valve connects the P1 mouth of described left shuttle valve, the A mouth of described left shuttle valve connects left safety valve entrance, described left safety valve outlet connects respectively described petrol storage tank, the entrance of A check valve and B check valve, the outlet of described A check valve is connected with the A mouth of described solenoid directional control valve, the outlet of described B check valve is connected with the B mouth of described solenoid directional control valve, the dynamical axis of described revolver two-way quantitative motor connects left wheel retarder, described left wheel retarder connects left wheel, the A mouth of described solenoid-operated proportional change-over valve connects the P2 mouth of a right shuttle valve, the B mouth of described solenoid-operated proportional change-over valve connects the P1 mouth of described right shuttle valve, the A mouth of described right shuttle valve connects right safety valve entrance, described right safety valve outlet connects respectively described petrol storage tank, the entrance of C check valve and D check valve, the outlet of described C check valve is connected with the A mouth of described solenoid-operated proportional change-over valve, the outlet of described D check valve is connected with the B mouth of described solenoid-operated proportional change-over valve, described right dynamical axis of taking turns two-way quantitative motor connects right wheel decelerates device, described right wheel decelerates device connects right wheel, revolver tachogen is installed on described left wheel, described revolver tachogen connects a comparator by wire, on described right wheel, right wheel speed sensor is installed, described right wheel speed sensor is connected and is turned to regulating element by wire, the described regulating element that turns to connects comparator by wire, described comparator connects pid control module by wire, described pid control module connects described solenoid-operated proportional change-over valve by wire, described proportional pressure control valve, described solenoid directional control valve, the described regulating element that turns to is connected with a controller by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420343516.1U CN203937514U (en) | 2014-06-17 | 2014-06-17 | A kind of many wheel engineering truck fluid pressure drive devices |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420343516.1U CN203937514U (en) | 2014-06-17 | 2014-06-17 | A kind of many wheel engineering truck fluid pressure drive devices |
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| CN203937514U true CN203937514U (en) | 2014-11-12 |
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| CN201420343516.1U Expired - Fee Related CN203937514U (en) | 2014-06-17 | 2014-06-17 | A kind of many wheel engineering truck fluid pressure drive devices |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691601A (en) * | 2016-01-28 | 2016-06-22 | 北京航空航天大学 | Aircraft propelling device based on hydraulic motor and propelling control system |
| CN107020949A (en) * | 2016-01-29 | 2017-08-08 | 中冶宝钢技术服务有限公司 | Hydrostatic driving running gear with interflow differential and shunting differential lock module |
| CN109109659A (en) * | 2018-09-07 | 2019-01-01 | 中国铁建重工集团有限公司 | Wheeled agricultural machinery and its hydraulic travel system |
| CN114046279A (en) * | 2021-10-29 | 2022-02-15 | 中信重工机械股份有限公司 | Quantitative motor dual-mode output speed regulation system and application thereof |
-
2014
- 2014-06-17 CN CN201420343516.1U patent/CN203937514U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691601A (en) * | 2016-01-28 | 2016-06-22 | 北京航空航天大学 | Aircraft propelling device based on hydraulic motor and propelling control system |
| CN107020949A (en) * | 2016-01-29 | 2017-08-08 | 中冶宝钢技术服务有限公司 | Hydrostatic driving running gear with interflow differential and shunting differential lock module |
| CN107020949B (en) * | 2016-01-29 | 2023-08-01 | 中冶宝钢技术服务有限公司 | Hydrostatic drive traveling system with converging differential and diverging differential lock modules |
| CN109109659A (en) * | 2018-09-07 | 2019-01-01 | 中国铁建重工集团有限公司 | Wheeled agricultural machinery and its hydraulic travel system |
| CN114046279A (en) * | 2021-10-29 | 2022-02-15 | 中信重工机械股份有限公司 | Quantitative motor dual-mode output speed regulation system and application thereof |
| CN114046279B (en) * | 2021-10-29 | 2024-01-05 | 中信重工机械股份有限公司 | Quantitative motor dual-mode output speed regulation system and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20150617 |
|
| EXPY | Termination of patent right or utility model |