CN110410386B - Hydraulic power lifting system of stereo bus garage - Google Patents
Hydraulic power lifting system of stereo bus garage Download PDFInfo
- Publication number
- CN110410386B CN110410386B CN201910665049.1A CN201910665049A CN110410386B CN 110410386 B CN110410386 B CN 110410386B CN 201910665049 A CN201910665049 A CN 201910665049A CN 110410386 B CN110410386 B CN 110410386B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/08—Garages for many vehicles
- E04H6/12—Garages for many vehicles with mechanical means for shifting or lifting vehicles
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/08—Garages for many vehicles
- E04H6/12—Garages for many vehicles with mechanical means for shifting or lifting vehicles
- E04H6/18—Garages for many vehicles with mechanical means for shifting or lifting vehicles with means for transport in vertical direction only or independently in vertical and horizontal directions
- E04H6/22—Garages for many vehicles with mechanical means for shifting or lifting vehicles with means for transport in vertical direction only or independently in vertical and horizontal directions characterised by use of movable platforms for horizontal transport, i.e. cars being permanently parked on palettes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
Abstract
The invention relates to the field of stereo public transport garages, in particular to a stereo public transport garage hydraulic power lifting system, wherein a power hydraulic control system comprises an oil filter B, a main oil pump motor, a main oil pump, a two-stage overflow valve and an oil filter A which are sequentially connected, the main oil pump motor is connected with the main oil pump through a coupler, an oil inlet of the main oil pump is connected with an oil outlet of the oil filter B, an oil outlet of the main oil pump is connected with an oil inlet of the two-stage overflow valve, two sides of the two-stage overflow valve are respectively provided with a high-pressure valve and a low-pressure valve, the high-pressure valve is used for garage ascending overflow, and the low pressure is used for garage descending overflow; the two groups of lifting systems share one hydraulic station, so that the hydraulic lifting systems are more convenient to control while reducing the cost, and the hydraulic lifting systems are more convenient to control while reducing the cost by utilizing the differential diameter serial hydraulic systems.
Description
Technical Field
The invention relates to the field of stereo public transport garages, in particular to a hydraulic power lifting system of a stereo public transport garage.
Background
Along with the development of cities, the urban traffic scale is continuously enlarged, the number of buses is rapidly increased, and the original bus station can not meet the requirements of stopping, overhauling and charging of the buses due to the area. In order to solve the parking problem of public transport means, a three-dimensional bus garage is provided. The lifting power of the stereo public transportation garage on the market is mainly used for lifting the vehicle carrying plate in the form of a winch, a traction machine and a steel wire rope; because of the dead weight, a large-power motor and a tractor are needed for lifting the bus. The motors and the traction machines with large volume and heavy weight are placed in the air, so that the steel structure is huge, the cost is high, and the occupied area is large; meanwhile, because of the reliability problem of the motor and the brake device on the traction equipment, the speed is uncertain during lifting or descending, thereby generating potential safety hazards.
Aiming at the problems, a hydraulic power lifting system for the stereo bus garage is specially designed, and a vehicle carrying plate is lifted by utilizing the large load of a hydraulic cylinder; meanwhile, due to the high damping characteristic of the hydraulic cylinder, accidents of sudden or high-speed falling cannot occur, and the hydraulic cylinder has high safety; in addition, the hydraulic station does not need to be suspended in the air, so that the hydraulic station has no requirement on steel structure, the cost is reduced, and the land area is saved. The advantages are large load, high safety, low cost and small floor area; the lifting power of the public transport garage is suitable. Is characterized in that:
1. the hydraulic system of the patent utilizes a differential-diameter series hydraulic system, so that the stereo garage is more convenient to control while the cost is reduced;
2. the two groups of lifting systems share one hydraulic station, so that the stereo garage is more convenient to control while the cost is reduced;
3. the additional oil supplementing system is arranged, so that high-speed lifting of individual oil cylinders is convenient to control, the oil cylinders acting on the same vehicle carrying plate are synchronous, the vehicle carrying plate operates more stably, and dangerous conditions are avoided;
4. the system is provided with a manual unloading function, so that the traveling of the bus in the stereo garage is not influenced no matter whether the system is powered on or not.
Disclosure of Invention
The invention aims to provide a hydraulic power lifting system of a stereo bus garage for solving the problems, the hydraulic system of the invention utilizes a differential diameter series hydraulic system, and simultaneously utilizes two groups of lifting systems to share one hydraulic station, so that the stereo bus garage is more convenient to control while reducing the cost; the additional oil supplementing system is arranged, so that high-speed lifting of individual oil cylinders is convenient to control, the oil cylinders acting on the same vehicle carrying plate are synchronous, the vehicle carrying plate operates more stably, and dangerous conditions are avoided; the system is provided with a manual unloading function, so that the traveling of the bus in the stereo garage is not influenced no matter whether the system is powered on or not.
The invention realizes the purpose through the following technical scheme:
the hydraulic power lifting system of the stereo bus garage comprises a power hydraulic control system, wherein the power hydraulic control system comprises an oil filter B, a main oil pump motor, a main oil pump, a two-stage overflow valve and an oil filter A which are sequentially connected, the main oil pump motor is connected with the main oil pump through a coupler, an oil inlet of the main oil pump is connected with an oil outlet of the oil filter B, an oil outlet of the main oil pump is connected with an oil inlet of the two-stage overflow valve, two sides of the two-stage overflow valve are respectively provided with a high-pressure valve and a low-pressure valve, the high-pressure valve is used for garage ascending overflow, and the low-pressure valve is used for garage descending overflow; the power hydraulic control system further comprises a supplementary oil inlet motor, a supplementary oil inlet oil pump, an electromagnetic overflow valve, a common overflow valve, a manual pump and a gear diversion motor, wherein the supplementary oil inlet motor is connected with the supplementary oil inlet pump through a coupler, an oil outlet of the supplementary oil inlet pump is connected with an oil inlet of the electromagnetic overflow valve, and the manual pump is connected with the common overflow valve.
According to the arrangement, the differential diameter serial hydraulic system and the two groups of lifting systems share one hydraulic station, so that the stereo garage is more convenient to control while the cost is reduced; the additional oil supplementing system is arranged, so that high-speed lifting of individual oil cylinders is convenient to control, the oil cylinders acting on the same vehicle carrying plate are synchronous, the stereo garage operates more stably, and dangerous conditions are avoided; the system is provided with a manual unloading function, so that the traveling of the bus in the stereo garage is not affected no matter whether the system is powered on or not.
Preferably, the electromagnetic overflow valve is connected with a supplementary oil inlet oil way in the power hydraulic control system.
So set up, the electromagnetic spill valve directly with power hydraulic control system supplements the oil feed oil circuit and is connected.
Preferably, an oil outlet of the gear shunt motor is connected with oil inlets of the first coarse hydraulic cylinder and the second coarse hydraulic cylinder respectively, and a first hydraulic control one-way valve and a second hydraulic control one-way valve are arranged between the oil outlet of the gear shunt motor and the oil inlets of the first coarse hydraulic cylinder and the second coarse hydraulic cylinder respectively.
According to the arrangement, the gear flow dividing motor enables the stereo garage to uniformly distribute high-pressure oil to the first coarse hydraulic cylinder and the second coarse hydraulic cylinder when the stereo garage is lifted, so that the lifting operation is more stable, in addition, the arrangement of the first hydraulic control one-way valve and the second hydraulic control one-way valve avoids the backflow of the high-pressure oil when the stereo garage is lifted, and the safety of the stereo garage in operation is ensured.
Preferably, a first one-way speed regulating valve and a third hydraulic control one-way valve are arranged between the first coarse hydraulic cylinder and the second three-position four-way electromagnetic directional valve.
So set up, be provided with first one-way speed control valve and third liquid accuse check valve between first thick hydraulic cylinder and the second three-position four-way solenoid directional valve, make hydraulic system move more steadily, the reliability is higher.
Preferably, a second one-way speed regulating valve and a fourth hydraulic control one-way valve are arranged between the second coarse hydraulic cylinder and the third three-position four-way electromagnetic directional valve.
According to the arrangement, the second one-way speed regulating valve and the fourth hydraulic control one-way valve are arranged between the second coarse hydraulic cylinder and the third three-position four-way electromagnetic directional valve, so that the stability and the reliability of the hydraulic system during operation are improved.
In the structure, when the stereo garage needs to ascend, the high-pressure side of the double-stage overflow valve acts, the left side of the electromagnetic directional valve acts, the motor of the main oil pump is started to drive the main oil pump to work, an oil supply system is stabilized at a required high pressure under the action of the double-stage overflow valve, the oil supply system enters the gear flow dividing motor through the one-way sequence valve to be evenly divided, the oil supply system is conveyed to the first coarse hydraulic cylinder and the second coarse hydraulic cylinder of the two-side differential diameter series-connection lifting oil cylinder through the first hydraulic control one-way valve and the second hydraulic control one-way valve, the first fine hydraulic cylinder and the second fine hydraulic cylinder which are connected in series at the tail part are respectively pushed by the first coarse hydraulic cylinder and the second coarse hydraulic cylinder, and unloading hydraulic oil returns to an oil tank through the electromagnetic directional valve from the tops of the first fine hydraulic cylinder and the second fine hydraulic cylinder, so that the vehicle carrying plate is jointly pushed to ascend.
When the stereo garage needs to descend, the low-pressure side of the two-stage overflow valve acts, the right side of the electromagnetic directional valve, the first electromagnetic manual two-position two-way directional valve and the second electromagnetic manual two-position two-way directional valve act, the first hydraulic control one-way valve and the second hydraulic control one-way valve are reversely opened, the oil supply system is stabilized at a required low pressure under the action of the two-stage overflow valve, the piston is pushed to descend through the oil ports at the top ends of the first thin hydraulic cylinder and the second thin hydraulic cylinder of the electromagnetic directional valve, so that the first coarse hydraulic cylinder and the second coarse hydraulic cylinder which are connected in series are respectively pushed to descend, and then unloading hydraulic oil returns to the oil tank through the first hydraulic control one-way valve and the second hydraulic control one-way valve from the bottoms of the first coarse hydraulic cylinder and the second coarse hydraulic cylinder, so that a vehicle carrying plate is driven to descend.
If oil needs to be supplemented because the speeds of the individual cylinders are asynchronous (the height difference is overlarge), the supplementing oil inlet motor is used for supplementing oil; such as: when the first coarse hydraulic cylinder is too low, the supplementary oil inlet motor is started, the electromagnetic overflow valve acts, the right side of the first three-position four-way electromagnetic directional valve acts, supplementary oil enters the main oil cylinder through the first three-position four-way electromagnetic directional valve and the first hydraulic control one-way valve, the ascending of the oil cylinder is accelerated, and therefore the height difference of the cylinder is reduced. When the first thin hydraulic cylinder is too low, the supplementing oil inlet motor is started, the left side of the second three-position four-way electromagnetic reversing valve is opened, and supplementing oil enters a series oil circuit through the third hydraulic control one-way valve and the first one-way speed regulating valve, so that the first thin hydraulic cylinder is accelerated to ascend until the height difference between the first thin hydraulic cylinder and other cylinders is within an allowable range; the supplementary oil feeding principle of other cylinders is the same.
When the garage needs to be manually lowered: when power is off, pulling the operating rods of the first electromagnetic manual two-position two-way reversing valve and the second electromagnetic manual two-position two-way reversing valve, and simultaneously pressing down the operating rod of the manual pump, at the moment, the first electromagnetic manual two-position two-way reversing valve and the second electromagnetic manual two-position two-way reversing valve are opened, the first hydraulic control one-way valve and the second hydraulic control one-way valve are opened reversely, the original oil is lifted to become oil unloading and descends, when the oil unloading is in place, the operating rods of the first electromagnetic manual two-position two-way reversing valve and the second electromagnetic manual two-position two-way reversing valve are released, the oil unloading is stopped, the vehicle carrying plate descends and stops, and the bus can be conveniently driven out; thereby the trip of the bus is not influenced when the power is cut off.
The invention has the following beneficial effects:
1. two groups of lifting systems share one hydraulic station, so that the hydraulic lifting systems are more convenient to control while the cost is reduced;
2. the hydraulic system is connected in series by utilizing the difference diameter, so that the cost of the hydraulic lifting system is reduced, and the hydraulic lifting system is more convenient to control;
3. the system is provided with the additional oil supplementing system, so that high-speed lifting of individual oil cylinders is convenient to control, the oil cylinders acting on the same vehicle carrying plate are synchronous, the vehicle carrying plate of the stereo garage is more stable in working and running, and dangerous conditions are avoided;
4. the manual unloading function is arranged, so that the hydraulic lifting system does not influence the car getting out no matter whether the hydraulic lifting system is powered on or not.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a general hydraulic system diagram of the hydraulic power lifting system of the stereo public transportation garage of the invention;
FIG. 2 is a power hydraulic system diagram of the hydraulic power lifting system of the stereo bus garage;
FIG. 3 is a diagram of a first hydraulic control system of the hydraulic power lifting system of the stereo bus garage;
the reference numerals are explained below:
1. an oil filter A; 2. a two-stage relief valve; 3. an oil filter B; 4. a main oil pump; 5. a main oil path motor; 6. a supplementary oil inlet motor; 7. supplementing an oil inlet pump; 8. a manual pump; 9. a common relief valve; 10. an electromagnetic spill valve; 201. an electromagnetic directional valve; 202. a one-way sequence valve; 203. a gear shunt motor; 301. a first superposition one-way throttle valve; 302. a first three-position four-way electromagnetic directional valve; 303. a first hydraulic control check valve; 304. a first electromagnetic manual two-position two-way reversing valve; 305. a first coarse hydraulic cylinder; 306. a first one-way speed regulating valve; 307. a second three-position four-way electromagnetic directional valve; 308. a second superimposed one-way throttle valve; 309. a first fine hydraulic cylinder; 310. a second electromagnetic manual two-position two-way reversing valve; 311. a second coarse hydraulic cylinder; 312. a second hydraulic control one-way valve; 313. a second one-way speed regulating valve; 314. a second fine hydraulic cylinder; 315. a third three-position four-way electromagnetic directional valve; 316. a third hydraulic control check valve; 317. and the fourth hydraulic control one-way valve.
Detailed Description
The invention is further described with reference to the accompanying drawings 1, 2 and 3.
The first embodiment: the invention will be further explained with reference to the accompanying drawings, and as shown in fig. 1-3, the hydraulic power lifting system of the stereo bus garage comprises a power hydraulic control system, the power hydraulic control system comprises an oil filter B (3), a main oil pump motor (5), a main oil pump (4), a double-stage overflow valve (2) and an oil filter A (1) which are connected in sequence, the main oil pump motor (5) is connected with the main oil pump (4) through a coupling, an oil inlet of the main oil pump (4) is connected with an oil outlet of the oil filter B (3), the oil outlet of the main oil pump (4) is connected with the oil inlet of the double-stage overflow valve (2), two sides of the double-stage overflow valve (2) are respectively provided with a high-pressure valve of 10MPA and a low-pressure valve of 5MPA, wherein the high-pressure valve is used for garage ascending overflow, and the low-pressure valve is used for garage descending overflow; the method is characterized in that: the power hydraulic control system further comprises a supplementary oil inlet motor (6), a supplementary oil inlet pump (7), an electromagnetic overflow valve (10), a common overflow valve (9) and a manual pump (8), wherein the supplementary oil inlet motor (6) is connected with the supplementary oil inlet pump (7) through a coupler, an oil outlet of the supplementary oil inlet pump (7) is connected with an oil inlet of the electromagnetic overflow valve (10), and the manual pump (8) is connected with the common overflow valve (9).
Second embodiment:
the second embodiment differs from the first embodiment in that: the first one-way speed regulating valve (306) and the third hydraulic control one-way valve (316) are arranged between the first coarse hydraulic cylinder (305) and the second three-position four-way electromagnetic directional valve (307).
Specifically, the first one-way speed regulating valve (306) and the third hydraulic control one-way valve (316) are arranged between the first coarse hydraulic cylinder (305) and the second three-position four-way electromagnetic directional valve (307), so that the hydraulic system is more stable in operation and higher in reliability.
The third embodiment:
the third embodiment differs from the first embodiment in that: the oil outlet of the gear diversion motor (203) is respectively connected with the oil inlets of the first coarse hydraulic cylinder (305) and the second coarse hydraulic cylinder (311), and the first hydraulic control one-way valve (303) and the second hydraulic control one-way valve (312) are respectively arranged between the oil outlet of the gear diversion motor (203) and the oil inlets of the first coarse hydraulic cylinder (305) and the second coarse hydraulic cylinder (311).
Specifically, the gear diversion motor (203) enables the stereo garage to uniformly distribute high-pressure oil to the first coarse hydraulic cylinder (305) and the second coarse hydraulic cylinder (311) during lifting, so that the lifting operation is more stable, and in addition, the first hydraulic control one-way valve (303) and the second hydraulic control one-way valve (312) avoid the backflow of the high-pressure oil during the lifting of the system, so that the safety during the operation of the system is ensured.
The working principle is as follows: when the vehicle carrying plate needs to ascend, the high-pressure end of the double-stage overflow valve (2) and the left side of the electromagnetic directional valve (201) act, the motor of the main oil pump (4) is started to drive the main oil pump (4) to work, high-pressure oil enters the gear flow dividing motor (203) through the electromagnetic directional valve (201) and the one-way sequence valve (202) to be uniformly divided, and then flows into the first coarse hydraulic cylinder (305) and the second coarse hydraulic cylinder (311) of the two-side differential diameter series lifting oil cylinder through the first hydraulic control one-way valve (303) and the second hydraulic control one-way valve (312), and the first coarse hydraulic cylinder (305) and the second coarse hydraulic cylinder (311) respectively push the first fine hydraulic cylinder (309) and the second fine hydraulic cylinder (314) which are connected in series at the tail part, so that the vehicle carrying plate is jointly pushed to ascend;
when the vehicle carrying plate needs to descend, the overflow of the low-pressure end of the double-stage overflow valve (2) is opened, the right side of the electromagnetic directional valve (201) acts, and the first electromagnetic manual two-position two-way directional valve (304) and the second electromagnetic manual two-position two-way directional valve (310) act, the first hydraulic control one-way valve (303) and the second hydraulic control one-way valve (312) are opened reversely, an oil inlet path goes to top oil ports of the first thin hydraulic cylinder (309) and the second thin hydraulic cylinder (314) to push the piston to descend, thereby respectively pushing the first crude hydraulic cylinder (305) and the second crude hydraulic cylinder (311) which are connected in series to descend, unloading hydraulic oil returns to the oil tank from the bottoms of the first coarse hydraulic cylinder (305) and the second coarse hydraulic cylinder (311) through a first hydraulic control one-way valve (303) and a second hydraulic control one-way valve (312), and accordingly the vehicle carrying plate is driven to descend.
If oil needs to be supplemented because the speeds of the individual cylinders are asynchronous (the height difference is overlarge), the supplementing oil inlet motor (6) drives the supplementing oil inlet pump (7) to act to supplement oil; such as: when the first coarse hydraulic cylinder (305) is too low, the supplementing oil inlet motor (6) is started, the right side of the first three-position four-way electromagnetic directional valve (302) acts, supplementing oil enters the main oil cylinder through the first three-position four-way electromagnetic directional valve (302) and the first hydraulic control one-way valve (303), the ascending of the oil cylinder is accelerated, and therefore the height difference of the cylinder is reduced; when the first fine hydraulic cylinder (309) on the side rises too high, the right side of the second three-position four-way electromagnetic directional valve (307) acts, and the third hydraulic control one-way valve (316) opens reversely to discharge oil, so that the first fine hydraulic cylinder (309) descends to a normal height. When the first fine hydraulic cylinder (309) is too low, the left side of the second three-position four-way electromagnetic directional valve (307) is opened, and the supplement oil enters a series oil circuit through the third hydraulic control one-way valve (316) and the first one-way speed regulating valve (306), so that the first fine hydraulic cylinder (309) is accelerated to ascend until the height difference with other cylinders is within an allowable range, and the supplement oil feeding principle of other cylinders is the same.
When the garage needs to be manually lowered: when power is off, pulling the operating rods of the first electromagnetic manual two-position two-way reversing valve (304) and the second electromagnetic manual two-position two-way reversing valve (310), pressing down the operating rod of the manual pump (8), opening the first electromagnetic manual two-position two-way reversing valve (304) and the second electromagnetic manual two-position two-way reversing valve (310), reversely opening the first hydraulic control one-way valve (303) and the second hydraulic control one-way valve (312), unloading oil from an oil cylinder to an oil tank under the action of gravity of a vehicle carrying plate, descending the vehicle carrying plate, and when the vehicle carrying plate descends in place, loosening the operating rods of the first electromagnetic manual two-position two-way reversing valve (304) and the second electromagnetic manual two-position two-way reversing valve (310), stopping oil unloading, stopping descending the vehicle carrying plate, and enabling a bus to be conveniently driven out; thereby the trip of the bus is not influenced when the power is cut off.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (1)
1. The hydraulic power lifting system of the stereo bus garage is characterized by comprising a power hydraulic control system, wherein the power hydraulic control system comprises an oil filter B, a main oil pump motor, a main oil pump, a two-stage overflow valve, an oil filter A, a first three-position four-way electromagnetic reversing valve and a first thin hydraulic cylinder which are sequentially connected, the main oil pump motor is connected with the main oil pump through a coupler, an oil inlet of the main oil pump is connected with an oil outlet of the oil filter B, an oil outlet of the main oil pump is connected with an oil inlet of the two-stage overflow valve, and a high-pressure valve and a low-pressure valve are respectively arranged on two sides of the two-stage overflow valve, wherein the high-pressure valve is used for garage ascending overflow, and; the power hydraulic control system further comprises a supplementary oil inlet motor, a supplementary oil inlet oil pump, an electromagnetic overflow valve, a common overflow valve, a manual pump and a gear flow dividing motor, wherein the supplementary oil inlet motor is connected with the supplementary oil inlet pump through a coupler, an oil outlet of the supplementary oil inlet pump is connected with an oil inlet of the electromagnetic overflow valve, the manual pump is connected with the common overflow valve, the electromagnetic overflow valve is connected with a supplementary oil inlet oil way in the power hydraulic control system, an oil outlet of the gear flow dividing motor is respectively connected with oil inlets of a first coarse hydraulic cylinder and a second coarse hydraulic cylinder, a first hydraulic control one-way valve and a second hydraulic control one-way valve are respectively arranged between an oil outlet of the gear flow dividing motor and oil inlets of the first coarse hydraulic cylinder and the second coarse hydraulic cylinder, a first one-way speed regulating valve and a third hydraulic control one-way valve are respectively arranged between the first coarse hydraulic cylinder and the second three-position four-way electromagnetic directional valve, the high-pressure oil supplementing system is characterized in that a second one-way speed regulating valve and a fourth hydraulic control one-way valve are arranged between a second coarse hydraulic cylinder and a third three-position four-way electromagnetic directional valve, when the first coarse hydraulic cylinder is too low, a supplementing oil inlet motor is started, the right side of the first three-position four-way electromagnetic directional valve acts, supplementing oil enters a main oil cylinder through the first three-position four-way electromagnetic directional valve and the first hydraulic control one-way valve, when the first fine hydraulic cylinder rises too high, the right side of the second three-position four-way electromagnetic directional valve acts, the third hydraulic control one-way valve is opened reversely to discharge oil, the first fine hydraulic cylinder descends to a normal height, when the first fine hydraulic cylinder is too low, the left side of the second three-position four-way electromagnetic directional valve is opened, the supplementing oil enters a series oil circuit through the third hydraulic control one-way valve and the first one-way speed regulating valve, and the first fine hydraulic cylinder rises in an accelerating mode.
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| CN110410386B true CN110410386B (en) | 2021-08-17 |
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| CN111022434A (en) * | 2019-12-28 | 2020-04-17 | 武汉承天液压机电设备有限公司 | Mixed pressure hydraulic test platform |
| CN117267192B (en) * | 2023-11-07 | 2024-03-19 | 成都物天物联网科技有限责任公司 | Synchronous lifting system of vehicle-mounted exchange box |
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| CN205063484U (en) * | 2015-10-12 | 2016-03-02 | 大洋泊车股份有限公司 | Fluid pressure type stereo garage liquid accuse system |
| CN105822103A (en) * | 2016-06-03 | 2016-08-03 | 胡珈榕 | Hydraulic system for intelligent, three-dimensional and avoiding-free parking |
| CN206035914U (en) * | 2016-08-11 | 2017-03-22 | 广西城市职业学院 | Four jar synchronous hydraulic system of automobile elevator |
| CN206530358U (en) * | 2016-12-14 | 2017-09-29 | 宜宾市翠屏区显峰建材有限公司 | A kind of mine hydraulic bracket multistage speed control system |
| CN206338268U (en) * | 2016-12-21 | 2017-07-18 | 宜宾市雪富玻璃制品有限责任公司 | A kind of mine hydraulic bracket control system |
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