CN203362685U - Electric hydraulic control device for lifting supporting bridge - Google Patents

Electric hydraulic control device for lifting supporting bridge Download PDF

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Publication number
CN203362685U
CN203362685U CN 201320464021 CN201320464021U CN203362685U CN 203362685 U CN203362685 U CN 203362685U CN 201320464021 CN201320464021 CN 201320464021 CN 201320464021 U CN201320464021 U CN 201320464021U CN 203362685 U CN203362685 U CN 203362685U
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CN
China
Prior art keywords
hydraulic
hydraulic control
oil
body controller
car body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320464021
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Chinese (zh)
Inventor
韩庆福
王旭光
孟国龙
张玲华
张文斌
朱磊磊
辛春亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinotruk Jinan Power Co Ltd
China National Heavy Duty Truck Group Jinan Power Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power Co Ltd
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Filing date
Publication date
Application filed by China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN 201320464021 priority Critical patent/CN203362685U/en
Application granted granted Critical
Publication of CN203362685U publication Critical patent/CN203362685U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an electric hydraulic control device for lifting a supporting bridge. The electric hydraulic control device comprises a double-point moving lifting bridge direction switch and a hydraulic control device body, wherein the double-point moving lifting bridge direction switch is connected with an automobile body controller; an input end of the automobile body controller is connected with a pressure relay, an output end of the automobile body controller is connected with a valve body of a reversing solenoid valve, and the automobile body controller is connected with the hydraulic control device body; the hydraulic control device body comprises a motor pump set, an oil box is arranged below the motor pump set, the motor pump set is connected with a hydraulic integrated block set, and the hydraulic integrated block set is connected with an oil cylinder through a corresponding pipeline and pipe fitting. The electric hydraulic control device provided by the utility model has the advantages that the operation control is simple, the degree of automation is high and the system is reliable.

Description

The electro-hydraulic control apparatus that a kind of supporting bridge promotes
Technical field
The utility model relates to auto electronic control technology and technical field of hydraulic, relates in particular to the electro-hydraulic control apparatus that a kind of heavy-duty car supporting bridge promotes.
Background technique
At present, the Lifting Control System of heavy-duty car supporting bridge is widely used, and has solved existing vehicle when Ballast, and all tire all lands, and has reduced sky and has sailed speed, has increased oil consumption, has accelerated the problems such as wearing and tearing of tire.But the hydraulic control device that existing supporting bridge promotes is mostly hand-hydraulic and controls, and operating grip is arranged on the outer vehicle frame of operator cabin side mostly, therefore caused inconvenient operation, inefficiency, the shortcoming such as system is unreliable.The advantages such as along with the fast development of auto electronic control technology and hydraulic control technology, the electro-hydraulic control apparatus that a kind of supporting bridge promotes arises at the historic moment, and it is easy that this device exists manipulation to control, and automaticity is high, and system is reliable.
The model utility content
The advantages such as the deficiency for the solution prior art exists, the utility model discloses the electro-hydraulic control apparatus that a kind of supporting bridge promotes, and it is easy that this device exists manipulation to control, and automaticity is high, and system is reliable.
For achieving the above object, concrete scheme of the present utility model is as follows:
The electro-hydraulic control apparatus that a kind of supporting bridge promotes, comprise the moving lift bridge direction switch of two point and hydraulic control device, the moving lift bridge direction switch of described two point is connected with car body controller, one input end of car body controller is connected with pressure relay, one output terminal of car body controller is connected with reversing solenoid valve, and car body controller also is connected with hydraulic control device.
Described hydraulic control device comprises the electric-motor pump group, and the below of electric-motor pump group is provided with fuel tank, and the electric-motor pump group is connected with the hydraulic integrated valve block group, and the hydraulic integrated valve block group is connected with oil cylinder through corresponding pipeline and pipe fitting.
Described electric-motor pump group comprises motor, and motor is connected with relay, and the coil-end of relay is connected with the corresponding output port of car body controller, and the control end of motor is connected with the car load power supply after relay normally open point, and the output terminal of motor is connected with oil hydraulic pump.
Described hydraulic integrated valve block group comprises reversing solenoid valve and pressure relay, the filler opening of reversing solenoid valve is connected with the oil outlet of oil hydraulic pump by common one-way valve, the filler opening of oil hydraulic pump is connected with fuel tank, the bidirectional hydraulic lock that the logical hydraulic fluid port of reversing solenoid valve also forms by two hydraulically-controlled one-way valves is connected with oil cylinder, the return opening of reversing solenoid valve is connected with fuel tank, the filler opening of pressure relay lower end is connected with the oil outlet of oil hydraulic pump, the oil hydraulic pump oil outlet also is connected with fuel tank by relief valve, reversing solenoid valve, pressure relay, common one-way valve, two hydraulically-controlled one-way valves and relief valve are integrated on the not coplanar of integrated package.
Described car body controller is connected with combination instrument by the CAN bus.
The moving lift bridge direction switch of described two point is arranged on operator cabin inside, the moving lift bridge direction switch of two point is provided with and upgrades, zero span and under lower category, upgrade on wherein with under lower category and be connected with the corresponding input port of car body controller.
Described oil cylinder also is connected with the supporting bridge lifting gear.
Described reversing solenoid valve is the two-position four-way reversing solenoid valve.
Car body controller can be according to the rising that collects or the signal of decline switching signal and pressure relay sensitive switch, by the Control motor, obtains electricly, drives oil hydraulic pump to provide hydraulic oil to oil cylinder, and oil cylinder is connected with the supporting bridge lifting gear; Car body controller is by detecting the state of input port, can effectively detect the moving lift bridge direction switch of two point and be on upgrade, or under lower category.When supporting bridge carries out vertical motion, upwards press the moving lift bridge direction switch of two point, car body controller detect direction switch on upgrade, and pressure relay sensitive switch closure detected, now can drive the motor on hydraulic power unit to obtain electric rotation to drive oil pump output hydraulic pressure oil to oil cylinder by relay, drive the piston rod in lifting gear to stretch out, realize the lifting of supporting bridge.The lifting rear system pressure that puts in place can rise to the predetermined force value of pressure relay (14MPa), the pressure relay sensitive switch is disconnected, now car body controller can be controlled the disconnection motor, and action stops, and the bidirectional hydraulic lock that locking forms by two hydraulically-controlled one-way valves in oil circuit is realized.When supporting bridge carries out down maneuver, press the moving lift bridge direction switch of two point downwards, car body controller detect switch under lower category, now according to the decline switching signal, controlling reversing solenoid valve obtains electric, thereby make hydraulic oil oil stream commutation, now car body controller obtains electric rotation by the relay drive motor and lags behind reversing solenoid valve and obtain electric 2s, drives oil pump output hydraulic pressure oil to oil cylinder, piston rod is retracted, realize the decline of supporting bridge.The rear pressure that puts in place of descending rises to the scheduled pressure value (14MPa) of pressure relay, and the pressure relay sensitive switch is disconnected, and car body controller is controlled and disconnected motor, and reversing solenoid valve also cuts off the power supply simultaneously, and action stops.In the supporting bridge process of rising or falling, can be according to any start and stop of the signal of direction switch.
The controlling method of the electro-hydraulic control apparatus that a kind of supporting bridge promotes comprises the following steps:
Step 1. car body controller detects on the moving lift bridge direction switch of two point and upgrades, under the state of the terminal that lower category, also have the state of pressure relay sensitive switch;
Step 2, when being positioned at, the moving lift bridge direction switch of two point upgrades, and the pressure relay sensitive switch is in closed state, car body controller is by the Control machine operation in the lifting motor assembly, drive oil pump output hydraulic pressure oil to oil cylinder, piston rod is stretched out, realize the lifting of supporting bridge, in lifting process, supporting bridge start and stop arbitrarily;
Step 3, after the lifting of supporting bridge puts in place, judge whether the pressure relay sensitive switch disconnects, and when the pressure relay sensitive switch disconnects, motor can quit work;
Step 4. when the pressure relay sensitive switch does not disconnect, judge whether the moving lift bridge direction switch of two point gets back to zero span, when the moving lift bridge direction switch of two point is not got back to zero span, motor can be worked after 40s always and be stopped, when carrying out descending operation next time, carry out again descending operation after first returning to zero span.
In described step 1, under being positioned at, the moving lift bridge direction switch of two point lowers category, and the pressure relay sensitive switch is in closed state, now car body controller obtains electric according to direction switch dropping signal control reversing solenoid valve, thereby make the commutation of hydraulic oil oil stream, car body controller obtains electric rotation by the relay drive motor and lags behind reversing solenoid valve and obtain electric 2s, drive oil pump output hydraulic pressure oil to oil cylinder, piston rod is retracted, realize the decline of supporting bridge, in the decline process, supporting bridge start and stop arbitrarily, after decline puts in place, judge whether the pressure relay sensitive switch disconnects, when the pressure relay sensitive switch disconnects, motor can quit work, when the pressure relay sensitive switch does not disconnect, judge whether the moving lift bridge direction switch of two point gets back to zero span, when the moving lift bridge direction switch of two point is not got back to zero span, motor can be worked after 40s always and be stopped, when carrying out descending operation next time, carry out again descending operation after first returning to zero span.
The beneficial effects of the utility model:
Because the moving lift bridge direction switch of two point is installed on the inner instrument desk operation panel of operator cabin place, the driver can operate the lifting of controlling the rear support bridge more easily.In carrying out supporting bridge rising or down maneuver process, the work indication that car body controller can rise accordingly or descend by CAN bus control combination instrument.After rising or descend and putting in place, if now the driver reset switch is not to zero span, motor does not continue action yet, until rise or step-down operation next time, so the time car body controller disconnection of pressure relay sensitive switch detected, motor quits work.If the pressure relay in system has unexpected fault; all be provided with protective system in oil circuit and circuit; relief valve in oil circuit can guarantee that system pressure is less than the 16MPa of setting, and the car body controller in circuit can guarantee that the farm labourer of motor single is no more than 40 seconds as the time, with the protection motor.In the supporting bridge process of rising or falling, can be according to any start and stop of the signal of direction switch.
The accompanying drawing explanation
Fig. 1 overall structure circuit theory diagrams of the present utility model;
Fig. 2 electric hydaulic control principle drawing of the present utility model;
Fig. 3 electric hydaulic controlling method of the present utility model flow chart;
In figure, 1 two point moves lift bridge direction switch, 2 car body controllers, 3 hydraulic integrated valve block groups, 4 combination instruments, 5 relays, 6 motors, 7 pressure relayes, 8 reversing solenoid valves, 9 Pilot operated check valves, 10 oil cylinders, 11 oil hydraulic pumps, 12 relief valves, 13 fuel tanks, 14 electric-motor pump groups, 15 common one-way valves.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is elaborated:
As shown in Figure 1-2, the electro-hydraulic control apparatus that a kind of supporting bridge promotes, comprise the moving lift bridge direction switch 1 of two point and hydraulic control device, the moving lift bridge direction switch 1 of described two point is connected with car body controller 2, car body controller 2 one input ends are connected with pressure relay 7, one output terminal of car body controller 2 is connected with reversing solenoid valve 8, and car body controller 2 is connected with hydraulic control device.
Described hydraulic control device comprises electric-motor pump group 14, and the below of electric-motor pump group 14 is provided with fuel tank 13, and electric-motor pump group 14 is connected with hydraulic integrated valve block group 3, and hydraulic integrated valve block group 3 is connected with oil cylinder 10 through corresponding pipeline and pipe fitting.
Described electric-motor pump group 14 comprises motor 6, motor 6 is connected with relay 5, the coil-end of relay 5 is connected with the corresponding output port of car body controller 2, and the control end of motor 6 is connected with the car load power supply after normal battle through relay 5, and the output terminal of motor 6 is connected with oil hydraulic pump 11.
Described hydraulic integrated valve block group 3 comprises reversing solenoid valve 8 and pressure relay 7, the filler opening of reversing solenoid valve 8 is connected with the oil outlet of oil hydraulic pump 11 by common one-way valve 15, the filler opening of oil hydraulic pump 11 is connected with fuel tank 13, the bidirectional hydraulic lock that the logical hydraulic fluid port of reversing solenoid valve 8 also forms by two hydraulically-controlled one-way valves 9 is connected with oil cylinder 10, the return opening of reversing solenoid valve 8 is connected with fuel tank 13, the filler opening of pressure relay 7 lower ends is connected with the oil outlet of oil hydraulic pump 11, oil hydraulic pump 11 oil outlets also are connected with fuel tank 13 by relief valve 12, reversing solenoid valve 8, pressure relay 7, common one-way valve 15, two hydraulically-controlled one-way valves 9 and relief valve 12 are integrated on the not coplanar of integrated package.
Described car body controller 2 is connected with combination instrument 4 by the CAN bus.
The moving lift bridge direction switch 1 of described two point is arranged on operator cabin inside, the moving lift bridge direction switch 1 of two point is provided with and upgrades, zero span and under lower category, upgrade on wherein with under lower category and be connected with the corresponding input port of car body controller 2.
Described oil cylinder 10 also is connected with the supporting bridge lifting gear.
Described reversing solenoid valve 8 is the two-position four-way reversing solenoid valve.
As shown in Figure 3, car body controller 2 can be according to the rising collected or the signal of decline switching signal and pressure relay 7 sensitive switches, controlling motors 6 by relay 5 must be electric, drives oil hydraulic pump 11 to provide hydraulic oil to oil cylinder 10, and oil cylinder 10 is connected with the supporting bridge lifting gear; Car body controller 2 is by detecting the state of input port, can effectively detect the moving lift bridge direction switch 1 of two point and be on upgrade, or under lower category.When supporting bridge carries out vertical motion, upwards press the moving lift bridge direction switch 1 of two point, car body controller 2 detect direction switch on upgrade, and pressure relay 7 sensitive switch closures detected, now can drive the motor 6 on oil hydraulic pump 11 to obtain electric rotation to drive oil pump output hydraulic pressure oil to oil cylinder 10 by relay 5, drive the piston rod in lifting gear to stretch out, realize the lifting of supporting bridge.The lifting rear system pressure that puts in place can rise to the predetermined force value of pressure relay 7 (14MPa), and pressure relay 7 sensitive switches are disconnected, and now car body controller 2 can be controlled and disconnect motors 6, and action stops, and locking is realized by the hydraulically-controlled one-way valve 9 in oil circuit.When supporting bridge carries out down maneuver, press the moving lift bridge direction switch 1 of two point downwards, car body controller 2 detect switch under lower category, now according to the decline switching signal, controlling reversing solenoid valve 8 obtains electric, thereby make hydraulic oil oil stream commutation, now car body controller 2 by relay 5 drive motor 6 electric rotation lag behind reversing solenoid valve 8 electric 2s, drive oil pump output hydraulic pressure oil to oil cylinder 10, piston rod is retracted, realize the decline of supporting bridge.The rear pressure that puts in place of descending rises to the scheduled pressure value (14MPa) of pressure relay 7, and pressure relay 7 sensitive switches are disconnected, and car body controller 2 is controlled and disconnected motors 6, and reversing solenoid valve 8 also cuts off the power supply simultaneously, and action stops.In the supporting bridge process of rising or falling, can be according to any start and stop of the signal of direction switch.
The controlling method of the electro-hydraulic control apparatus that a kind of supporting bridge promotes comprises the following steps:
Step 1, car body controller 2 detect on the moving lift bridge direction switch 1 of two points upgrade and under the lower category state of terminal, also have the state of pressure relay 7 sensitive switches;
Step 2, when being positioned at, the moving lift bridge direction switch 1 of two point upgrades, and pressure relay 7 sensitive switches are in closed state, car body controller 2 is controlled motor 6 work by the relay 5 in lifting motor assembly 3, drive oil pump output hydraulic pressure oil to oil cylinder 10, piston rod is stretched out, realize the lifting of supporting bridge, in lifting process, supporting bridge start and stop arbitrarily;
Step 3, after the lifting of supporting bridge puts in place, judge whether pressure relay 7 sensitive switches disconnect, and when pressure relay 7 sensitive switches disconnect, motor 10 can quit work;
Step 4. when pressure relay 7 sensitive switches do not disconnect, judge whether the moving lift bridge direction switch 1 of two point gets back to zero span, when the moving lift bridge direction switch 1 of two point is not got back to zero span, motor 6 can be worked after 40s always and be stopped, when carrying out descending operation next time, carry out again descending operation after first returning to zero span.
In described step 1, under being positioned at, the moving lift bridge direction switch 1 of two point lowers category, and pressure relay 7 sensitive switches are in closed state, now car body controller 2 obtains electric according to switch dropping signal control reversing solenoid valve 8, thereby make the commutation of hydraulic oil oil stream, car body controller 2 by relay 5 drive motor 6 electric rotation lag behind reversing solenoid valve 8 electric 2s, drive oil pump output hydraulic pressure oil to oil cylinder 10, piston rod is retracted, realize the decline of supporting bridge, in the decline process, supporting bridge start and stop arbitrarily, after decline puts in place, judge whether pressure relay 7 sensitive switches disconnect, when pressure relay 7 sensitive switches disconnect, motor 10 can quit work, when pressure relay 7 sensitive switches do not disconnect, judge whether the moving lift bridge direction switch 1 of two point gets back to zero span, when the moving lift bridge direction switch 1 of two point is not got back to zero span, motor 6 can be worked after 40s always and be stopped, when carrying out descending operation next time, carry out again descending operation after first returning to zero span.

Claims (7)

1. the electro-hydraulic control apparatus that a supporting bridge promotes, it is characterized in that, comprise the moving lift bridge direction switch of two point and hydraulic control device, the moving lift bridge direction switch of described two point is connected with car body controller, one input end of car body controller is connected with pressure relay, one output terminal of car body controller is connected with reversing solenoid valve, and car body controller also is connected with hydraulic control device;
Described hydraulic control device comprises the electric-motor pump group, and the below of electric-motor pump group is provided with fuel tank, and the electric-motor pump group is connected with the hydraulic integrated valve block group, and the hydraulic integrated valve block group is connected with oil cylinder through corresponding pipeline and pipe fitting.
2. the electro-hydraulic control apparatus that a kind of supporting bridge as claimed in claim 1 promotes, it is characterized in that, described electric-motor pump group comprises motor, motor is connected with relay, the coil-end of relay is connected with the corresponding output port of car body controller, the control end of motor is connected with the car load power supply after relay normally open point, and the output terminal of motor is connected with oil hydraulic pump.
3. the electro-hydraulic control apparatus that a kind of supporting bridge as claimed in claim 1 promotes, it is characterized in that, described hydraulic integrated valve block group comprises reversing solenoid valve and pressure relay, the filler opening of reversing solenoid valve is connected with the oil outlet of oil hydraulic pump by common one-way valve, the filler opening of oil hydraulic pump is connected with fuel tank, the bidirectional hydraulic lock that the logical hydraulic fluid port of reversing solenoid valve also forms by two hydraulically-controlled one-way valves is connected with oil cylinder, the return opening of reversing solenoid valve is connected with fuel tank, the filler opening of pressure relay lower end is connected with the oil outlet of oil hydraulic pump, the oil hydraulic pump oil outlet also is connected with fuel tank by relief valve, reversing solenoid valve, pressure relay, common one-way valve, two hydraulically-controlled one-way valves and relief valve are integrated on the not coplanar of integrated package.
4. the electro-hydraulic control apparatus that a kind of supporting bridge as claimed in claim 1 promotes is characterized in that described car body controller is connected with combination instrument by the CAN bus.
5. the electro-hydraulic control apparatus that a kind of supporting bridge as claimed in claim 1 promotes, it is characterized in that, the moving lift bridge direction switch of described two point is arranged on operator cabin inside, the moving lift bridge direction switch of two point is provided with and upgrades, zero span and under lower category, upgrade on wherein with under lower category and be connected with the corresponding input port of car body controller.
6. the electro-hydraulic control apparatus that a kind of supporting bridge as claimed in claim 1 promotes is characterized in that described oil cylinder also is connected with the supporting bridge lifting gear.
7. the electro-hydraulic control apparatus that a kind of supporting bridge as claimed in claim 3 promotes is characterized in that described reversing solenoid valve is the two-position four-way reversing solenoid valve.
CN 201320464021 2013-07-31 2013-07-31 Electric hydraulic control device for lifting supporting bridge Expired - Fee Related CN203362685U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320464021 CN203362685U (en) 2013-07-31 2013-07-31 Electric hydraulic control device for lifting supporting bridge

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Application Number Priority Date Filing Date Title
CN 201320464021 CN203362685U (en) 2013-07-31 2013-07-31 Electric hydraulic control device for lifting supporting bridge

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103343762A (en) * 2013-07-31 2013-10-09 中国重汽集团济南动力有限公司 Power-driven hydraulic control device for lifting support bridge and control method of power-driven hydraulic control device
CN106930350A (en) * 2017-04-19 2017-07-07 徐工集团工程机械股份有限公司科技分公司 A kind of loader cab overturns hood hoisting system
CN107165897A (en) * 2017-07-06 2017-09-15 岭南师范学院 A kind of hydraulic control system of agricultural machinery vehicle body elevating mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103343762A (en) * 2013-07-31 2013-10-09 中国重汽集团济南动力有限公司 Power-driven hydraulic control device for lifting support bridge and control method of power-driven hydraulic control device
CN103343762B (en) * 2013-07-31 2015-05-27 中国重汽集团济南动力有限公司 Power-driven hydraulic control device for lifting support bridge and control method of power-driven hydraulic control device
CN106930350A (en) * 2017-04-19 2017-07-07 徐工集团工程机械股份有限公司科技分公司 A kind of loader cab overturns hood hoisting system
CN107165897A (en) * 2017-07-06 2017-09-15 岭南师范学院 A kind of hydraulic control system of agricultural machinery vehicle body elevating mechanism

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Legal Events

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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: 20131225

Termination date: 20170731

CF01 Termination of patent right due to non-payment of annual fee