CN110203845A - A kind of hydraulic control system for four column lifting mechanisms - Google Patents
A kind of hydraulic control system for four column lifting mechanisms Download PDFInfo
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- CN110203845A CN110203845A CN201910463279.XA CN201910463279A CN110203845A CN 110203845 A CN110203845 A CN 110203845A CN 201910463279 A CN201910463279 A CN 201910463279A CN 110203845 A CN110203845 A CN 110203845A
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- China
- Prior art keywords
- hydraulic
- solenoid valve
- oil circuit
- oil
- pump
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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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
-
- 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
-
- 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
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- 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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of hydraulic control systems for four column lifting mechanisms, it includes control unit, fuel tank, pump, oil return component, the first oil circuit for controlling support platform lifting, the second oil circuit and third oil circuit for controlling secondary lifting platform lifting, the input port of pump is connected to fuel tank, the delivery outlet of pump and the first oil circuit, the second oil circuit and third oil communication, the first oil circuit, the second oil circuit and third oil circuit are connected in parallel；First oil circuit includes the first solenoid valve, the first hydraulic main cylinder and the first lifting unit for driving support platform lifting, and the first port of first hydraulic cylinder is connect by the first solenoid valve with pump, and the second port of first hydraulic cylinder is connect with the first lifting unit；Pump passes through second solenoid valve and the second oil circuit and third oil communication.The composed structure that the present invention can solve the hydraulic control system of four columns lifting mechanism in the prior art is complex, is not easy to the problem of being controlled.
Description
Technical field
The present invention relates to four column lifting mechanism technical fields more particularly to a kind of hydraulic controls for four column lifting mechanisms
System.
Background technique
With the continuous development of automobile industry, auto repair and maintenance are increasingly becoming a new industry, wherein four columns are lifted
Mechanism is risen as the important tool in auto repair and servicing operations, has also obtained quick development, four column lifting mechanisms are main
It is that automobile is increased to another safe altitude from a safe altitude, in order to manual operation and maintenance.Currently, four columns lift
The composed structure of the hydraulic control system of mechanism is complex, is not easy to be controlled, to be not easy to maintenance personal to automobile
Maintenance.
Summary of the invention
Based on this, the purpose of the present invention is to provide a kind of hydraulic control systems for four column lifting mechanisms, to solve
The composed structure of the hydraulic control system of four columns lifting mechanism in the prior art is complex, is not easy to be controlled, thus
The problem of being not easy to maintenance of the maintenance personal to automobile.
The technical solution of the present invention is as follows: a kind of hydraulic control system for four column lifting mechanisms comprising control unit, oil
Case, pump, oil return component, the first oil circuit for controlling support platform lifting, for controlling the lifting of secondary lifting platform
The second oil circuit and third oil circuit, the input port of the pump is connected to the fuel tank, the delivery outlet of the pump
With first oil circuit, second oil circuit and the third oil communication, first oil circuit, second oil circuit and described
Third oil circuit is connected in parallel；
First oil circuit includes first liter of the first solenoid valve, the first hydraulic main cylinder and the drive support platform lifting
The first port in drop portion, the first hydraulic cylinder is connect by first solenoid valve with the pump, first liquid
The second port of cylinder pressure is connect with first lifting unit；
The pump passes through second solenoid valve and second oil circuit and the third oil communication, second oil
Road includes the second hydraulic main cylinder and the first hydraulic secondary cylinder, the second solenoid valve, first hydraulic main cylinder and first liquid
Secondary cylinder is pressed to be sequentially communicated, the third oil circuit includes third hydraulic main cylinder and the second hydraulic secondary cylinder, the second solenoid valve, described
Third hydraulic main cylinder and the second hydraulic secondary cylinder are sequentially communicated；
The oil return component is connected in parallel with the pump, and the oil return component with first solenoid valve and
The second solenoid valve connection, first solenoid valve, the second solenoid valve, the pump and the oil return component are equal
It is electrically connected with the control unit.
Optionally, the pump includes the driving of filter, check valve, gear pump and the driving gear pump rotation
Portion, the fuel tank, the filter, the gear pump and the check valve are sequentially communicated, the check valve and first electricity
Magnet valve and the second one-way valve are connected in parallel.
Optionally, the oil return component includes third solenoid valve and speed governing valve, one end of the third solenoid valve with it is described
First solenoid valve and the second solenoid valve are connected in parallel, and the other end of the third solenoid valve is connect with the speed governing valve.
Optionally, the first port of second hydraulic main cylinder, first port, the third of the described first hydraulic secondary cylinder
The first port of hydraulic main cylinder and the first port of the second hydraulic secondary cylinder are respectively connected with explosion-proof valve.
Optionally, the control unit includes PLC controller, rotary switch, rising button and declines button, and the rotation is opened
It closes, the rising button and the declines button are electrically connected with the PLC controller.
Optionally, the driving portion is motor.
Optionally, the speed governing valve is adjustable throttling.
The implementation of the embodiments of the present invention has the following beneficial effects:
Hydraulic control system for four column lifting mechanisms of the invention, by the way that the first oil circuit is arranged, the first oil circuit includes
First solenoid valve, the first hydraulic main cylinder and the first lifting unit for driving support platform lifting, when control unit issues the first lifting unit
When the signal of rising, pump and the first solenoid valve are in running order, and second solenoid valve and oil return component are not at work
State, hydraulic oil are delivered to the first hydraulic main cylinder, the piston rod of the first hydraulic main cylinder from fuel tank, pump, the first solenoid valve
It pushes out, so that the first lifting unit is in propradation；When control unit issues the signal of the first lifting unit decline, the first electricity
Magnet valve and oil return component are in running order, and pump and second solenoid valve are not at working condition, and hydraulic oil is from fuel tank,
One solenoid valve and oil return component are back to fuel tank, so that the first lifting unit is in decline state；
By the second oil circuit of setting and third oil circuit, when control unit issues the signal that secondary lifting platform lifts, pumping
Component and second solenoid valve are in running order, and the first solenoid valve and oil return component are not at working condition, hydraulic oil from fuel tank,
Pump and second solenoid valve are delivered to the second oil circuit and third oil circuit respectively, and in the second oil circuit, hydraulic oil is delivered to
In two hydraulic main cylinders, since the second hydraulic main cylinder and the first hydraulic secondary cylinder are connected to, the second hydraulic main cylinder and the first hydraulic pair
Cylinder can be with synchronous lifting, so that the steady rising of the corresponding secondary lifting platform of the second oil circuit of realization, hydraulic in third oil circuit
Oil is delivered in third hydraulic main cylinder, due to third hydraulic main cylinder and the second hydraulic secondary cylinder connection, third hydraulic main cylinder and
Second hydraulic secondary cylinder can be with synchronous lifting, to realize the steady rising of the corresponding secondary lifting platform of third oil circuit；
When control unit issues the signal of secondary lifting platform decline, second solenoid valve and oil return component are in work shape
State, the first solenoid valve and pump are not at working condition, and in the second oil circuit, hydraulic oil is from the first hydraulic secondary cylinder, second
Be back to fuel tank in hydraulic main cylinder, second solenoid valve and oil return component, in third oil circuit, hydraulic oil from the second hydraulic secondary cylinder,
It is back to mailbox in third hydraulic main cylinder, second solenoid valve and oil return component, to realize the corresponding secondary lifting of the second oil circuit
The steady decline of platform and the corresponding secondary lifting platform of third oil circuit；
To sum up, the hydraulic control system for four column lifting mechanisms of the invention has structure simply and convenient for the excellent of control
Point, to have certain generalization.
Detailed description of the invention
Fig. 1 is the schematic diagram of the hydraulic control system for four column lifting mechanisms of the invention.
Fig. 2 is the structural schematic diagram one of four column lifting mechanisms of the invention.
Fig. 3 is the structural schematic diagram two of four column lifting mechanisms of the invention.
Fig. 4 is the structural schematic diagram three of four column lifting mechanisms of the invention.
Description of symbols:
1, fuel tank；2, filter；3, check valve；4, driving portion；5, driving portion；6, the first solenoid valve；7, second solenoid valve；
8, the first hydraulic main cylinder；9, the second hydraulic main cylinder；10, third hydraulic main cylinder；11, the first hydraulic secondary cylinder；12, the second hydraulic pair
Cylinder；13, third solenoid valve；14, speed governing valve；15, explosion-proof valve；16, support platform；17, secondary lifting platform；18, control unit.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "left", "right", "top", "bottom" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
As shown in figures 1-4, a kind of hydraulic control system for four column lifting mechanisms provided by the embodiment of the present invention,
It includes control unit 18, fuel tank 1, pump, oil return component, the first oil circuit for controlling the lifting of support platform 16, is used for
The second oil circuit and third oil circuit that secondary lifting platform 17 is gone up and down are controlled, the input port of pump is connected to fuel tank 1, pumping group
The delivery outlet of part and the first oil circuit, the second oil circuit and third oil communication, the first oil circuit, the second oil circuit and third oil circuit parallel connection connect
It connects；
First oil circuit includes the first solenoid valve 6, the first hydraulic main cylinder 8 and the first lifting for driving support platform 16 to go up and down
Portion, the first port of first hydraulic cylinder are connect by the first solenoid valve 6 with pump, the second port of first hydraulic cylinder and the
The connection of one lifting unit；
For pump by second solenoid valve 7 and the second oil circuit and third oil communication, the second oil circuit includes second hydraulic
Master cylinder 9 and the first hydraulic secondary cylinder 11, second solenoid valve 7, the first hydraulic main cylinder 8 and the first hydraulic secondary cylinder 11 are sequentially communicated, third
Oil circuit includes third hydraulic main cylinder 10 and the second hydraulic secondary cylinder 12, second solenoid valve 7, third hydraulic main cylinder 10 and the second hydraulic pair
Cylinder 12 is sequentially communicated；
Oil return component is connected in parallel with pump, and oil return component connects with the first solenoid valve 6 and second solenoid valve 7
It connects, the first solenoid valve 6, second solenoid valve 7, pump and oil return component are electrically connected with control unit 18.
Based on above-mentioned setting, the hydraulic control system for four column lifting mechanisms of the invention, by the way that the first oil circuit is arranged,
First oil circuit includes the first solenoid valve 6, the first hydraulic main cylinder 8 and the first lifting unit for driving support platform 16 to go up and down, and works as control
When portion 18 issues the signal that the first lifting unit rises, pump and the first solenoid valve 6 are in running order, second solenoid valve 7
It is not at working condition with oil return component, hydraulic oil is delivered to the first hydraulic main cylinder from fuel tank 1, pump, the first solenoid valve 6
8, the piston rod of the first hydraulic main cylinder 8 pushes out, so that the first lifting unit is in propradation；When control unit 18 issues first
When the signal of lifting unit decline, the first solenoid valve 6 and oil return component are in running order, and pump and second solenoid valve 7 are not
In running order, hydraulic oil is back to fuel tank 1 from fuel tank 1, the first solenoid valve 6 and oil return component, thus at the first lifting unit
In decline state；
By the second oil circuit of setting and third oil circuit, when control unit 18 issues the signal that secondary lifting platform 17 lifts,
Pump and second solenoid valve 7 are in running order, and the first solenoid valve 6 and oil return component are not at working condition, hydraulic oil
It is delivered to the second oil circuit and third oil circuit respectively from fuel tank 1, pump and second solenoid valve 7, in the second oil circuit, hydraulic oil
It is delivered in the second hydraulic main cylinder 9, since the second hydraulic main cylinder 9 is connected to the first hydraulic secondary cylinder 11, the second hydraulic main cylinder
9 and first hydraulic secondary cylinder 11 can with synchronous lifting, to realize the steady rising of the corresponding secondary lifting platform 17 of the second oil circuit,
In third oil circuit, hydraulic oil is delivered in third hydraulic main cylinder 10, due to third hydraulic main cylinder 10 and the second hydraulic secondary cylinder 12
Connection, therefore, third hydraulic main cylinder 10 and the second hydraulic secondary cylinder 12 can be with synchronous liftings, to realize third oil circuit corresponding two
The steady rising of secondary lifting platform 17；
When control unit 18 issues the signal that secondary lifting platform 17 declines, second solenoid valve 7 and oil return component are in work
Make state, the first solenoid valve 6 and pump are not at working condition, and in the second oil circuit, hydraulic oil is from the first hydraulic secondary cylinder
11, it is back to fuel tank 1 in the second hydraulic main cylinder 9, second solenoid valve 7 and oil return component, in third oil circuit, hydraulic oil is from second
It is back to mailbox in hydraulic pair cylinder 12, third hydraulic main cylinder 10, second solenoid valve 7 and oil return component, to realize the second oil circuit
The steady decline of corresponding secondary lifting platform 17 secondary lifting platform 17 corresponding with third oil circuit；It should be noted that the
Two hydraulic main cylinders 9 and the first 12 collective effect of hydraulic secondary cylinder are wherein on a secondary lifting platform 17, third hydraulic main cylinder 10
With the second hydraulic secondary 13 collective effect of cylinder on another secondary lifting platform 17；
To sum up, the hydraulic control system for four column lifting mechanisms of the invention has structure simply and convenient for the excellent of control
Point, to have certain generalization.
In the present embodiment, as shown in figures 1-4, hydraulic oil is pumped to the first oil from fuel tank 1 for the ease of pump
Road, the second oil circuit and third oil circuit, pump include that filter 2, check valve 3, gear pump 4 and driving gear pump 4 rotate
Driving portion 5, fuel tank 1, filter 2, gear pump 4 and check valve 3 are sequentially communicated, and check valve 3 and the first solenoid valve 6 and second are unidirectional
Valve 3 is connected in parallel.Specifically, filter 2 can will be filtered the hydraulic oil extracted out from fuel tank 1 by setting filter 2,
Guarantee the cleannes for entering the hydraulic oil of the first oil circuit, the second oil circuit and third oil circuit；By the way that check valve 3 is arranged, so that
Hydraulic oil can only enter in the first oil circuit, the second oil circuit and third oil circuit from filter 2 by check valve 3；By the way that tooth is arranged
Wheel pump 4 and driving portion 5, gear pump 4 and driving portion 5 can provide power for being pumped into for hydraulic oil；Driving portion 5 is motor, electronic
Machine has good output power, so as to drive gear pump 4 to be rotated.
In the present embodiment, as shown in figures 1-4, for the ease of the oil return of the first oil circuit, the second oil circuit and third oil circuit, return
Oily component includes third solenoid valve 13 and speed governing valve 14, one end of third solenoid valve 13 and the first solenoid valve 6 and second solenoid valve 7
It is connected in parallel, the other end of third solenoid valve 13 is connect with speed governing valve 14.Specifically, by setting third solenoid valve 13, third
Solenoid valve 13 is connected to control unit 18, and third solenoid valve 13 can control the progress of oil return process；By the way that speed governing valve 14, speed regulation is arranged
Valve 14 is adjustable throttling, and adjustable throttling can control the speed of hydraulic oil reflux.
In the present embodiment, as shown in figures 1-4, the first of the first port of the second hydraulic main cylinder 9, the first hydraulic secondary cylinder 11
The first port of port, the first port of third hydraulic main cylinder 10 and the second hydraulic secondary cylinder 12 is respectively connected with explosion-proof valve 15, passes through
Explosion-proof valve 15 is set, and explosion-proof valve 15 is hydraulic to second the 9, first hydraulic secondary cylinder 11 of hydraulic main cylinder, third hydraulic main cylinder 10 and second
Secondary cylinder 12 plays the role of protection.
In the present embodiment, as shown in figures 1-4, control unit 18 includes PLC controller, rotary switch, rising button and decline
Button, rotary switch, rising button and declines button are electrically connected with PLC controller, by the way that rotary switch, rotary switch is arranged
For tool there are two control point, two control points control the lifting of support platform 16 and the lifting of secondary lifting platform 17 respectively；Pass through
Rising button and declines button be set, rising button can control support platform 16 rising or secondary lifting platform 17 it is upper
It rises, declines button can control the decline of support platform 16 or the decline of secondary lifting platform 17.
To sum up, the hydraulic control system for four column lifting mechanisms of the invention has structure simply and convenient for the excellent of control
Point, to have certain generalization.
It should be understood that various information are described in the present invention using term " first ", " second " etc., but these information
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformations can also be made, these improvement and deformations are also considered as
Protection scope of the present invention.
Claims (7)
1. a kind of hydraulic control system for four column lifting mechanisms, which is characterized in that including control unit, fuel tank, pump,
Oil return component, the first oil circuit for controlling support platform lifting, the second oil circuit for controlling the lifting of secondary lifting platform and
Third oil circuit, the input port of the pump are connected to the fuel tank, the delivery outlet of the pump and first oil
Road, second oil circuit and the third oil communication, first oil circuit, second oil circuit and the third oil circuit are in parallel
Connection；
First oil circuit includes the first solenoid valve, the first hydraulic main cylinder and the first lifting for driving the support platform lifting
The first port in portion, the first hydraulic cylinder is connect by first solenoid valve with the pump, and described first is hydraulic
The second port of cylinder is connect with first lifting unit；
The pump passes through second solenoid valve and second oil circuit and the third oil communication, the second oil circuit packet
Include the second hydraulic main cylinder and the first hydraulic secondary cylinder, the second solenoid valve, first hydraulic main cylinder and the first hydraulic pair
Cylinder is sequentially communicated, and the third oil circuit includes third hydraulic main cylinder and the second hydraulic secondary cylinder, the second solenoid valve, the third
Hydraulic main cylinder and the second hydraulic secondary cylinder are sequentially communicated；
The oil return component is connected in parallel with the pump, and the oil return component with first solenoid valve and described
Second solenoid valve connection, first solenoid valve, the second solenoid valve, the pump and the oil return component are and institute
State control unit electrical connection.
2. being used for the hydraulic control system of four column lifting mechanisms as described in claim 1, which is characterized in that the pump
Including filter, check valve, gear pump and driving gear pump rotation driving portion, it is the fuel tank, the filter, described
Gear pump and the check valve are sequentially communicated, and the check valve is in parallel with first solenoid valve and the second one-way valve to be connected
It connects.
3. being used for the hydraulic control system of four column lifting mechanisms as described in claim 1, which is characterized in that the oil return component
Including third solenoid valve and speed governing valve, one end of the third solenoid valve and first solenoid valve and the second solenoid valve are simultaneously
Connection connection, the other end of the third solenoid valve are connect with the speed governing valve.
4. being used for the hydraulic control system of four column lifting mechanisms as described in claim 1, which is characterized in that described second is hydraulic
The first port of master cylinder, the first port of the first hydraulic secondary cylinder, the first port of the third hydraulic main cylinder and described the
The first port of two hydraulic secondary cylinders is respectively connected with explosion-proof valve.
5. being used for the hydraulic control system of four column lifting mechanisms as described in claim 1, which is characterized in that the control unit packet
PLC controller, rotary switch, rising button and declines button are included, the rotary switch, the rising button and the decline are pressed
Button is electrically connected with the PLC controller.
6. being used for the hydraulic control system of four column lifting mechanisms as claimed in claim 2, which is characterized in that the driving portion is
Motor.
7. being used for the hydraulic control system of four column lifting mechanisms as claimed in claim 3, which is characterized in that the speed governing valve is
Adjustable throttling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910463279.XA CN110203845A (en) | 2019-05-30 | 2019-05-30 | A kind of hydraulic control system for four column lifting mechanisms |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463279.XA CN110203845A (en) | 2019-05-30 | 2019-05-30 | A kind of hydraulic control system for four column lifting mechanisms |
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| CN110203845A true CN110203845A (en) | 2019-09-06 |
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| CN201910463279.XA Pending CN110203845A (en) | 2019-05-30 | 2019-05-30 | A kind of hydraulic control system for four column lifting mechanisms |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536082A (en) * | 2020-04-28 | 2020-08-14 | 中车青岛四方车辆研究所有限公司 | Hydraulic control system of supporting wheel based on magnetic levitation vehicle |
| CN112359535A (en) * | 2020-11-10 | 2021-02-12 | 宜昌湖蓝科技开发有限公司 | Textile printing and dyeing desizing waste liquid treatment equipment and recycling method thereof |
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| CN104828737A (en) * | 2015-03-12 | 2015-08-12 | 鹏亚机械科技（上海）有限公司 | Self-locking type scissor-fork lifting mechanism |
| DE102014108370A1 (en) * | 2014-06-13 | 2015-12-17 | Jungheinrich Aktiengesellschaft | Hydraulic lifting device for a battery-operated industrial truck |
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2019
- 2019-05-30 CN CN201910463279.XA patent/CN110203845A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4573663A (en) * | 1983-05-20 | 1986-03-04 | Hans Nussbaum | Lifting device, especially elevating platform for motor vehicles |
| DE102014108370A1 (en) * | 2014-06-13 | 2015-12-17 | Jungheinrich Aktiengesellschaft | Hydraulic lifting device for a battery-operated industrial truck |
| CN104828737A (en) * | 2015-03-12 | 2015-08-12 | 鹏亚机械科技（上海）有限公司 | Self-locking type scissor-fork lifting mechanism |
| CN104709845A (en) * | 2015-03-17 | 2015-06-17 | 江苏中一汽车机械设备制造有限公司 | Large shear type secondary hydraulic lifter |
| CN104709844A (en) * | 2015-03-17 | 2015-06-17 | 江苏中一汽车机械设备制造有限公司 | Four-column type lifter with secondary lifting function |
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Application publication date: 20190906 |