CN1556287A - Electrohydraulic ratio control device - Google Patents
Electrohydraulic ratio control device Download PDFInfo
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- CN1556287A CN1556287A CNA2004100021057A CN200410002105A CN1556287A CN 1556287 A CN1556287 A CN 1556287A CN A2004100021057 A CNA2004100021057 A CN A2004100021057A CN 200410002105 A CN200410002105 A CN 200410002105A CN 1556287 A CN1556287 A CN 1556287A
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Abstract
Electrohydraulic proportional control equipment consists of programmable electrohydraulic proportional control unit, electrohydraulic proportional precursor module. Output end of the control unit is connected to the precursor module, which is connected to work device. Sensors convert operating directions and angles of each handle operated by operator to electric signals, then main controller outputs corresponding controlling signal, which through the precursor module controls work device. Thus, control unit can be put any place inside operator cabin; and separation between control unit and main machine can be realized through long cable or wireless control providing flexible control. Moreover, control program in main controller is programmable based on control need in order to suit specific need.
Description
Technical field
The present invention relates to a kind of electric-hydraulic proportion control device, especially a kind ofly be mainly used in banked direction control valves or other has the hydraulic work device of similar characteristics, as the electric-hydraulic proportion control device of the manipulation control of engineering machinery operating mechanisms such as loader, bulldozer, excavator.
Background technology
The operating mechanism of engineering machinery as: the Excavating buckets of the swing arm of loader and bulldozer and scraper bowl, excavator etc. are all driven by hydraulic system.The equipment of present a part of engineering machinery adopts the hydraulic pilot proportional control apparatus.This device has the following disadvantages: 1, be connected by many very long fluid pressure lines between manipulation device and the master control banked direction control valves, limited the installation site of manipulation device at driver's cabin, be unfavorable for the reasonable Arrangement of driver's cabin; 2, owing to is connected by many oil pipes between manipulation device and the master control banked direction control valves, can't realize that remote control reequips, inadequate especially when the high-risk task of execution; 3, the pilot valve that is loaded in the manipulation device is frame for movement fully, can't carry out product up-gradation or function is expanded.
Summary of the invention
The electric ratio control signal that the object of the present invention is to provide a kind of output to programme, can require to programme according to the manipulation control of real work device, and carry out general or special control, be mainly used in banked direction control valves or other has the hydraulic work device of similar characteristics, as the electric-hydraulic proportion control device of the manipulation control of engineering machinery operating mechanisms such as loader, bulldozer, excavator.
The present invention includes electric proportional control device able to programme and electric-hydraulic proportion elder generation guide module, electric proportional control device able to programme is used to export programmable electric ratio control signal, the able to programme electric ratio control signal output of electric proportional control device able to programme connects electric-hydraulic proportion elder generation guide module by control cables, and the guide of electric-hydraulic proportion elder generation guide module controls liquid stream output by the external equipment of oil pipe.
Electric proportional control device able to programme can be provided with support body, sensor, electromagnet, microswitch, handle, sensing chip, suction iron and master controller.Sensor, electromagnet and handle are located on the support body, are used to judge that the microswitch of handle rotation direction is located at the turning cylinder both sides of handle: another is used to control the bottom that electromagnet energising and the microswitch of outage are located at electromagnet; Sensing chip is located on the sliding beam of sensor below, drives moving to change the distance between sensing chip and the sensor of sliding beam by the handle rotation; Inhale iron and be located on the sliding beam of electromagnet below, drive moving of sliding beam by the handle rotation and inhale the position that iron overlaps between bottom electromagnet to change; The electrical signal of sensor connects master controller, the output termination electric-hydraulic proportion elder generation guide module of master controller.Said electric proportional control device able to programme is established 2 covers.
The optional sensor of said sensor with inductance type or other exportable displacements or angle signal.Master controller can adopt general PLC or nonshared control unit (according to controlling the circuit board that requirement designs).
Hydraulic proportional elder generation guide module can be provided with solenoid-operated proportional pressure valve, two three-position four-way valves, two-position valve, oil pipe road integrated package, oil pipe joint and bases.The oil pipe road integrated package that is used for the oil pipe road between the electromagnetic valve is concentrated in together is located at base, and solenoid-operated proportional pressure valve, three-position four-way valve and two-position valve are located at the periphery of oil pipe road integrated package; The oil pipe joint is located at the top of oil pipe road integrated package, and the oil pipe joint is respectively by the unsteady control of banked direction control valves, pressure oil pipe, oil return pipe and the equipment of the external equipment of fluid pressure line mouthful.
Said two-position valve can be selected two two-port valves or two position four-way valves for use, hydraulic proportional elder generation guide module be arranged at the equipment banked direction control valves near.
Compare with existing hydraulic pilot proportional control apparatus, because the built-in sensor of electric proportional control device able to programme is the signal of telecommunication with the operator to the direction of operating and the angular transition of different handles, through the corresponding control signal of master controller output, control signal is controlled electric-hydraulic proportion elder generation guide module through control cables, and this link is the signal of telecommunication, therefore electric proportional control device able to programme can arbitrarily be installed in any position of driver's cabin, also this device can be separated with main frame, adopt long cable or wireless connections, realize line traffic control or remote control.The present invention simultaneously has the flexibility in the control handled, and can change the control program of master controller, to adapt to special needs according to the manipulation control needs of equipment; Can further establish technical foundation for the intellectuality exploitation of loader or other engineering machinery complete machine.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is the schematic diagram of the embodiment of the invention.
Fig. 3 is the structure principle chart of the able to programme electric proportional control device of the embodiment of the invention.
Fig. 4 is the structural representation of the able to programme electric proportional control device of the embodiment of the invention.
Fig. 5 is the structural representation of the electric-hydraulic proportion elder generation guide module of the embodiment of the invention.
Fig. 6 is the oil pipe road integrated package structural representation that the oil pipe road between the electromagnetic valve is concentrated in together of being used for of the electric-hydraulic proportion of embodiment of the invention elder generation guide module.
The specific embodiment
Following examples will the present invention is further illustrated in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention includes electric proportional control device 1 able to programme and electric-hydraulic proportion elder generation guide module 3, electric proportional control device 1 able to programme is used to export programmable electric ratio control signal, the able to programme electric ratio control signal output of electric proportional control device 1 able to programme connects electric-hydraulic proportion elder generation guide module 3 by control cables 2, and the guide of electric-hydraulic proportion elder generation guide module 3 controls the master control banked direction control valves 4 of liquid stream output by the external equipment 5 of oil pipe.The built-in sensor of electric proportional control device able to programme 1 is the signal of telecommunication with the operator to the direction of operating and the angular transition of different handles, and through the corresponding control signal of master controller output, control signal is controlled through 2 pairs of electric-hydraulic proportions elder generations of control cables guide module 3.Electric-hydraulic proportion elder generation guide module 3 is controlled liquid stream according to control signal output guide, and by oil pipe control banked direction control valves 4, banked direction control valves 4 power output liquid stream again drives equipment 5.6 of feedback cable feed back to electric proportional control device 1 able to programme with the mode of equipment 5 residing positions with the signal of telecommunication, make the control crank of manipulation device get back to meta automatically.
In Fig. 2, top is the schematic diagram of electric-hydraulic proportion elder generation guide module.Electric-hydraulic proportion elder generation guide module is made up of an accurate solenoid-operated proportional pressure valve 33, two three-position four-way valves 31 and two two-port valves 32 (also available two position four-way valves).Its course of work is: the on-position of the signal of telecommunication control three position four-way electromagnetic valve 31 relevant with direction of control crank output, the pressure size of the control liquid stream of signal of telecommunication control solenoid-operated proportional pressure valve 33 outputs relevant of control crank output with the angle variation, control the correspondence control mouth that liquid flows to banked direction control valves from oil pipe nipple a1, b1 and a2, b2 output, realize control equipment.Pressure oil input port P cut-in pressure oil wherein, the T mouth is an oil return opening, F control mouth is used for auxiliary control, as the floating position control of working device of loader.Three-position four-way valve adopts wet-type DC solenoid, Y formula meta, board-like installation.Two position two-way valve also adopts wet-type DC solenoid, O formula meta, board-like installation, spring reset.The solenoid-operated proportional pressure valve adopts direct current direct controlled type, board-like installation.Right lower quadrant is an electric proportional control device 1 able to programme, referring to Fig. 3, and 4, electric proportional control device able to programme is made up of the identical parts of two nested structures, and the structure of single parts is referring to Fig. 3, and the complete structure of whole device is referring to Fig. 4.Single parts by support body 10, displacement transducer 11, three microswitches 12～14, electromagnet 15, handle 16, handle bracket 17, sensing chips 18, inhale iron 19, sliding beam 20, base 21 and master controller etc. and form.Displacement transducer 11 is installed in the upper beam left side of handle bracket 17, sensing chip 18 is installed on the sliding beam 20 under the displacement transducer 11, electromagnet 15 is installed in the right side that handle bracket 17 is put the beams in place, inhaling iron 19 is installed on the sliding beam 20 under the electromagnet 15, the both sides of the middle part turning cylinder of putting the beams in place at handle bracket are equipped with two microswitches 12,13 that are used to judge the handle rotation direction, and a microswitch 14 that is used to control electromagnet energising and outage is installed in the bottom of electromagnet.Its course of work is: when moving handle 16, by microswitch 12,13 detect handle direction of rotation and the corresponding signal of output, driving sliding beam 20 during the handle rotation moves up and down, cause between sensing chip 18 and the displacement transducer 11 variable in distance takes place, detect the variation of distance and convert the corresponding ratio signal of telecommunication to by displacement transducer, these signal input master controllers, after handling these signals, exports to by master controller electric-hydraulic proportion elder generation guide module, the on-position of three-position four-way valve in the wherein relevant signal of telecommunication control electric-hydraulic proportion elder generation guide module with the handle direction of rotation, the pressure size of electromagnetic proportional valve output pressure control stream in the signal of telecommunication control electric-hydraulic proportion elder generation guide module relevant with the handle anglec of rotation, thus realization is to the control of banked direction control valves.When handle rotates to extreme position, touch magnet switching electricity microswitch and send power on signal, inhaling Tie Tong when extreme position crosses the drive of sliding beam and moves to the position that overlaps with the bottom of electromagnet, electromagnet is inhaled iron by adhesive handle is remained on extreme position, when the signal feedback that puts in place of equipment arrives master controller, the electromagnet outage, handle returns meta.Master controller can adopt general PLC or special circuit plate, be installed in this device near.
As Fig. 5, shown in 6, electric-hydraulic proportion elder generation guide module is by forming with lower member: accurate solenoid-operated proportional pressure valve 33, two three-position four-way valves 31, two position four-way valve 32, oil pipe road integrated package 34, base 35 and 7 the oil pipe nipples etc. that are used for the oil pipe road between the electromagnetic valve is concentrated in together are formed.Integrated package 34 (referring to Fig. 6) is custom-designed metal product, is used for the oil pipe road between the electromagnetic valve is integrated, and integrated package 34 is located on the base 35.All electromagnetic valves all are board-like installations, are connected with screwed hole on the integrated package by screw.Solenoid-operated proportional pressure valve 33 vertically is installed in the left side of integrated package 34; Two three-position four-way valves 31 laterally are installed in the front side of integrated package 34 side by side, and two position four-way valves 32 vertically are installed in the right side of integrated package 34; A1, b1, a2, b2, P, T, F are the oil pipe nipple, and an end is the taper thread ozzle, and the other end is the straight thread ozzle, are connected with taper thread hole on the integrated package end face by the taper thread ozzle, and all parts are connected on the base 35 by integrated package 34 at last.In Fig. 5, a1, b1 and a2, b2 output control liquid stream is connected in the equipment spool of banked direction control valves by fluid pressure line and controls corresponding input port, and the P mouth feeds pressure oil, and the T mouth lead to oil return pipe, the unsteady control mouth of the logical equipment of F mouth.This module by base be installed in the equipment banked direction control valves near.The oil pipe joint is located at the top of oil pipe road integrated package, and the oil pipe joint is respectively by the unsteady control of banked direction control valves, pressure oil pipe, oil return pipe and the equipment of the external equipment of fluid pressure line mouthful.
Said two-position valve can be selected two two-port valves or two position four-way valves for use, hydraulic proportional elder generation guide module be arranged at the equipment banked direction control valves near.
Claims (8)
1, electric-hydraulic proportion control device, it is characterized in that comprising electric proportional control device able to programme and electric-hydraulic proportion elder generation guide module, electric proportional control device able to programme is used to export programmable electric ratio control signal, the able to programme electric ratio control signal output of electric proportional control device able to programme connects electric-hydraulic proportion elder generation guide module by control cables, and the guide of electric-hydraulic proportion elder generation guide module controls liquid stream output by the external equipment of oil pipe; Said electric proportional control device able to programme is established 2 covers.
2, electric-hydraulic proportion control device as claimed in claim 1 is characterized in that electric proportional control device able to programme is provided with support body, sensor, electromagnet, microswitch, handle, sensing chip, suction iron and master controller; Sensor, electromagnet and handle are located on the support body, are used to judge that the microswitch of handle rotation direction is located at the turning cylinder both sides of handle; Another is used to control the bottom that electromagnet energising and the microswitch of outage are located at electromagnet; Sensing chip is located on the sliding beam of sensor below, drives moving to change the distance between sensing chip and the sensor of sliding beam by the handle rotation; Inhale iron and be located on the sliding beam of electromagnet below, drive moving of sliding beam by the handle rotation and inhale the position that iron overlaps between bottom electromagnet to change; The electrical signal of sensor connects master controller, the output termination electric-hydraulic proportion elder generation guide module of master controller.
3, electric-hydraulic proportion control device as claimed in claim 2 is characterized in that said sensor selects the sensor of inductance type or other exportable displacements or angle signal for use.
4, electric-hydraulic proportion control device as claimed in claim 2 is characterized in that master controller adopts general PLC or nonshared control unit.
5, electric-hydraulic proportion control device as claimed in claim 1 is characterized in that hydraulic proportional elder generation guide module is provided with solenoid-operated proportional pressure valve, two three-position four-way valves, two-position valves, is used for oil pipe road integrated package, oil pipe joint and base that the oil pipe road between the electromagnetic valve is concentrated in together; Oil pipe road integrated package is located on the base, and solenoid-operated proportional pressure valve, three-position four-way valve and two-position valve are located at the periphery of oil pipe oil pipe line integrated package; The oil pipe joint is located at the top of oil pipe road integrated package, and the oil pipe joint is respectively by the unsteady control of banked direction control valves, pressure oil pipe, oil return pipe and the equipment of the external equipment of fluid pressure line mouthful.
6, electric-hydraulic proportion control device as claimed in claim 5 is characterized in that said two-position valve selects two two-port valves or two position four-way valves for use.
7, electric-hydraulic proportion control device as claimed in claim 5 is characterized in that the solenoid-operated proportional pressure valve vertically is installed in the left side of integrated package, and two three-position four-way valves laterally are installed in the front side of integrated package side by side, and two position four-way valves vertically are installed in the right side of integrated package.
8, electric-hydraulic proportion control device as claimed in claim 5 is characterized in that said oil pipe joint is a nipple, and an end is the taper thread ozzle, and the other end is the straight thread ozzle, is connected with taper thread hole on the integrated package end face by the taper thread ozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100021057A CN1262901C (en) | 2004-01-07 | 2004-01-07 | Electrohydraulic ratio control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100021057A CN1262901C (en) | 2004-01-07 | 2004-01-07 | Electrohydraulic ratio control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1556287A true CN1556287A (en) | 2004-12-22 |
| CN1262901C CN1262901C (en) | 2006-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100021057A Expired - Fee Related CN1262901C (en) | 2004-01-07 | 2004-01-07 | Electrohydraulic ratio control device |
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| Country | Link |
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| CN (1) | CN1262901C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936018A (en) * | 2010-07-26 | 2011-01-05 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Electro-hydraulic proportion control system of loader |
| CN102032233A (en) * | 2011-01-08 | 2011-04-27 | 四川省宜宾普什驱动有限责任公司 | Multifunctional proportional multi-way valve |
| CN102190247A (en) * | 2011-05-11 | 2011-09-21 | 三一汽车起重机械有限公司 | Hydraulic pilot control system and hydraulic pilot crane provided with same |
| CN103243772A (en) * | 2013-05-08 | 2013-08-14 | 三一重机有限公司 | Engineering machine and operating control system thereof |
-
2004
- 2004-01-07 CN CNB2004100021057A patent/CN1262901C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936018A (en) * | 2010-07-26 | 2011-01-05 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Electro-hydraulic proportion control system of loader |
| CN102032233A (en) * | 2011-01-08 | 2011-04-27 | 四川省宜宾普什驱动有限责任公司 | Multifunctional proportional multi-way valve |
| CN102032233B (en) * | 2011-01-08 | 2013-05-15 | 四川省宜宾普什驱动有限责任公司 | Multifunctional proportional multi-way valve |
| CN102190247A (en) * | 2011-05-11 | 2011-09-21 | 三一汽车起重机械有限公司 | Hydraulic pilot control system and hydraulic pilot crane provided with same |
| CN102190247B (en) * | 2011-05-11 | 2013-03-27 | 三一汽车起重机械有限公司 | Hydraulic pilot control system and hydraulic pilot crane provided with same |
| CN103243772A (en) * | 2013-05-08 | 2013-08-14 | 三一重机有限公司 | Engineering machine and operating control system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1262901C (en) | 2006-07-05 |
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