CN111997944A - Hydraulic system for automobile lifter - Google Patents
Hydraulic system for automobile lifter Download PDFInfo
- Publication number
- CN111997944A CN111997944A CN202010805403.9A CN202010805403A CN111997944A CN 111997944 A CN111997944 A CN 111997944A CN 202010805403 A CN202010805403 A CN 202010805403A CN 111997944 A CN111997944 A CN 111997944A
- Authority
- CN
- China
- Prior art keywords
- oil
- port
- valve
- oil cylinder
- cylinder
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
-
- 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
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of hydraulic control, and discloses a hydraulic system for an automobile lifter, which comprises: an oil tank; the oil inlet of the oil pump is communicated with the oil tank, and the oil pump is connected with a motor for driving the oil pump to rotate; the oil cylinders are arranged in a mode of being grouped in pairs, two oil cylinders in each group are respectively a first oil cylinder and a second oil cylinder, first oil ports of the first oil cylinder and the second oil cylinder are connected with two-way valves, piston rods of the first oil cylinder and the second oil cylinder are respectively connected with platforms corresponding to the first oil cylinder and the second oil cylinder, the first oil port of the first oil cylinder is communicated with the oil pump through a one-way valve, and the first oil port of the first oil cylinder is connected with an oil return pipeline connected with the one-way valve in parallel; the first electromagnetic valve is provided with a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port. The invention provides a lifting system for an automobile lifter, which aims to achieve the purpose of good synchronism among oil cylinders.
Description
Technical Field
The invention relates to the technical field of hydraulic control, in particular to a hydraulic system for an automobile lifter.
Background
With the continuous development of the automobile industry, automobile maintenance and repair gradually become an emerging industry, wherein a lifter is used as an important tool for automobile maintenance and repair, and mainly used for improving an automobile from one safety height to another safety height. The transmission mode of the lifter is mainly divided into mechanical transmission and hydraulic transmission, the mechanical transmission structure has the advantages of simple structure and low price, but the lifting weight of the lifter is limited, and a screw rod or a working nut is easy to slip and buckle, so that the lifter has great potential safety hazard; the hydraulic transmission structure has the advantages of good safety performance, stable operation and high working efficiency, but the synchronism among the oil cylinders is not good.
Disclosure of Invention
The purpose of the invention is: the invention provides a lifting system for an automobile lifter, which aims to achieve the purpose of good synchronism among oil cylinders.
In order to achieve the above object, the present invention provides a hydraulic system for a car lift for lifting a platform of the car lift, comprising:
an oil tank;
the oil inlet of the oil pump is communicated with the oil tank, and the oil pump is connected with a motor for driving the oil pump to rotate;
the oil cylinders are arranged in a mode of grouping two oil cylinders in pairs, the two oil cylinders in each group are respectively a first oil cylinder and a second oil cylinder, first oil ports of the first oil cylinder and the second oil cylinder are connected with a two-way valve, piston rods of the first oil cylinder and the second oil cylinder are respectively connected with the corresponding platforms, the first oil port of the first oil cylinder is communicated with the oil pump through a one-way valve, and the first oil port of the first oil cylinder is connected with an oil return pipeline which is connected with the one-way valve in parallel;
a first solenoid valve having a first port, a second port, a third port, a fourth port, and a fifth port, the first port and the second port being in bidirectional communication, the fourth port and the fifth port both being in communication with the third port, and the third port and the fourth port being in bidirectional communication;
the hydraulic cylinder comprises a piston, a piston ring, a first valve port, a third valve port, a fourth valve port, a fifth valve port and a hydraulic oil pump, wherein the piston ring is arranged in the piston, the first valve port and the third valve port are arranged in the piston, the piston ring is arranged in the piston ring.
In some embodiments of the application, it includes second solenoid valve and speed governing valve to return oil pipe way, the oil inlet of second solenoid valve with the first hydraulic fluid port intercommunication of first hydro-cylinder the two-way valve intercommunication, the oil-out of second solenoid valve with the oil inlet intercommunication of speed governing valve, the oil-out of speed governing valve with the oil tank intercommunication.
In some embodiments of the present application, the speed valve is an adjustable throttle valve.
In some embodiments of the present application, an explosion-proof valve is connected between the cylinder and the two-way valve.
In some embodiments of the present application, the hydraulic system for an automobile lifter further includes an overflow valve, an oil inlet of the overflow valve is communicated with an oil outlet of the oil pump, and an oil outlet of the overflow valve is communicated with the oil tank.
In some embodiments of the present application, the oil inlet of the oil pump is connected with a filter.
Compared with the prior art, the hydraulic system for the automobile lifter has the advantages that:
when the hydraulic system needs to lift the platform, the motor drives the oil pump, the first electromagnetic valve is in a power-off state, the first valve port and the second valve port of the first electromagnetic valve are communicated, the oil pump pumps hydraulic oil from the oil tank to the lower cavity of the first oil cylinder, a piston ring of the first oil cylinder is pushed to lift by the hydraulic oil pumped out by the oil pump, the hydraulic oil in the upper cavity of the first oil cylinder flows to the lower cavity of the second oil cylinder through the first valve port and the second valve port of the first electromagnetic valve, and therefore the lifting speed of a piston rod of the first oil cylinder is the same as that of a piston rod of the second oil cylinder, and synchronous lifting of the two platforms is achieved;
in addition, when the two platforms are not positioned on the same plane, the first electromagnetic valve is in a power-on state, a third valve port, a fourth valve port and a fifth valve port of the first electromagnetic valve are respectively communicated with a second oil port of the first oil cylinder, a first oil port of the second oil cylinder and an oil outlet of the oil pump, oil pumped out by the oil pump flows to an upper cavity of the first oil cylinder and a lower cavity of the second oil cylinder through the third valve port and the fourth valve port after passing through the fifth valve port, a piston rod of the first oil cylinder descends, a piston of the second oil cylinder ascends until the two platforms are positioned on the same plane, and therefore leveling of the two platforms is achieved;
therefore, the hydraulic system enables the two platforms to ascend and level synchronously, and therefore the hydraulic system has certain popularization.
Drawings
Fig. 1 is a schematic structural view of a hydraulic system for an automobile elevator according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first solenoid valve according to an embodiment of the present invention.
In the figure, 1, a fuel tank; 2. an oil pump; 3. a motor; 4. a first cylinder; 41. a first oil port; 42. a second oil port; 5. a second cylinder; 51. a first oil port; 52. a second oil port; 6. a two-way valve; 7. a first solenoid valve; 71. a first valve port; 72. a second valve port; 73. a third valve port; 74. a fourth valve port; 75. a fifth valve port; 8. a second solenoid valve; 9. a speed regulating valve; 10. an explosion-proof valve; 11. an overflow valve; 12. a filter; 13. a one-way valve; 14. a platform.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, a hydraulic system for an automobile elevator according to a preferred embodiment of the present invention is used for elevating a platform 14 of the automobile elevator, and includes an oil tank 1, an oil pump 2, and a first solenoid valve 7, wherein an oil inlet of the oil pump 2 is communicated with the oil tank 1, and the oil pump 2 is connected to a motor 3 for driving the oil pump to rotate; the oil cylinders are arranged in a mode of being grouped in pairs, two oil cylinders in each group are respectively a first oil cylinder 4 and a second oil cylinder 5, first oil ports 51 of the first oil cylinder 4 and the second oil cylinder 5 are connected with a two-way valve 6, piston rods of the first oil cylinder 4 and the second oil cylinder 5 are respectively connected with a platform 14 corresponding to the piston rods, the first oil cylinder 4 is provided with a first oil port 41 and a second oil port 42, the second oil cylinder 5 is provided with a first oil port 51 and a second oil port 52, the first oil port 41 of the first oil cylinder 4 is communicated with the oil pump 2 through a one-way valve 13, and the first oil port 41 of the first oil cylinder 4 is connected with an oil return pipeline connected with the one-way valve 13 in parallel; the first solenoid valve 7 has a first port 71, a second port 72, a third port 73, a fourth port 74 and a fifth port 75, the first port 71 and the second port 72 are communicated in two directions, the fourth port 74 and the fifth port 75 are both communicated with the third port 73, and the third port 73 and the fourth port 74 are communicated in two directions; the cavity of the oil cylinder above the piston ring is an upper cavity, the cavity of the oil cylinder below the piston is a lower cavity, the first valve port 71 and the third valve port 73 are suitable for being communicated with the second oil port 42 of the first oil cylinder 4, the second valve port 72 and the fourth valve port 74 are suitable for being communicated with the first oil port 51 of the second oil cylinder 5, the fifth valve port 75 is suitable for being communicated with the oil outlet of the oil pump 2, and hydraulic oil flows between the upper cavity of the first oil cylinder 4 and the lower cavity of the second oil cylinder 5.
Based on the above arrangement, when the hydraulic system needs to lift the platform 14, the motor 3 drives the oil pump 2, the first electromagnetic valve 7 is in a power-off state, the first valve port 71 and the second valve port 72 of the first electromagnetic valve 7 are communicated, the oil pump 2 pumps hydraulic oil from the oil tank 1 to the lower cavity of the first oil cylinder 4, the piston ring of the first oil cylinder 4 is pushed to lift by the hydraulic oil pumped by the oil pump 2, the hydraulic oil in the upper cavity of the first oil cylinder 4 flows to the lower cavity of the second oil cylinder 5 through the first valve port 71 and the second valve port 72 of the first electromagnetic valve 7, and therefore, the speed of lifting the piston rod of the first oil cylinder 4 is the same as the speed of lifting the piston rod of the second oil cylinder 5, so that the two platforms 14 are lifted synchronously;
in addition, when the two platforms 14 are not on the same plane, the first electromagnetic valve 7 is in a power-on state, the third valve port 73, the fourth valve port 74 and the fifth valve port 75 of the first electromagnetic valve 7 are respectively communicated with the second oil port 42 of the first oil cylinder 4, the first oil port 51 of the second oil cylinder 5 and the oil outlet of the oil pump 2, oil pumped out by the oil pump 2 passes through the fifth valve port 75 and then respectively flows to the upper cavity of the first oil cylinder 4 and the lower cavity of the second oil cylinder 5 through the third valve port 73 and the fourth valve port 74, the piston rod of the first oil cylinder 4 descends, and the piston of the second oil cylinder 5 ascends until the two platforms 14 are on the same plane, so that leveling of the two platforms 14 is realized;
therefore, the hydraulic system enables the two platforms 14 to be lifted and leveled synchronously, thereby having certain popularization.
In some embodiments, optionally, as shown in fig. 1, the oil return line includes a second solenoid valve 8 and a speed regulating valve 9, an oil inlet of the second solenoid valve 8 is communicated with the two-way valve 6 communicated with the first oil port 41 of the first oil cylinder 4, an oil outlet of the second solenoid valve 8 is communicated with an oil inlet of the speed regulating valve 9, and an oil outlet of the speed regulating valve 9 is communicated with the oil tank 1. Therefore, when the second electromagnetic valve 8 is powered off, the second electromagnetic valve 8 is in a closed state, and the hydraulic oil cannot flow back to the oil tank 1 from the second electromagnetic valve 8; when the second electromagnetic valve 8 is powered on, the second electromagnetic valve 8 is in an open state, hydraulic oil in the lower cavity of the first oil cylinder 4 flows back to the oil tank 1 through the second electromagnetic valve 8 and the speed regulating valve 9, and hydraulic oil in the lower cavity of the second oil cylinder 5 flows back to the upper cavity of the first oil cylinder 4, so that synchronous descending of the two platforms 14 is realized.
In some embodiments, optionally, as shown in fig. 1, the speed valve 9 is an adjustable throttle valve.
In some embodiments, optionally, as shown in fig. 1, an explosion-proof valve 10 is connected between the cylinder and the two-way valve 6. Therefore, when the hydraulic pipeline is broken, the pressure of the hydraulic oil in the two oil cylinders and the pressure of the hydraulic oil in the hydraulic pipeline are suddenly increased, and the explosion-proof valve 10 can slow down the falling speed of the hydraulic oil, so that an operator can maintain the hydraulic pipeline conveniently.
In some embodiments, optionally, as shown in fig. 1, the hydraulic system for an automobile lifter of the present invention further includes a relief valve 11, an oil inlet of the relief valve 11 is communicated with an oil outlet of the oil pump 2, and an oil outlet of the relief valve 11 is communicated with the oil tank 1. Therefore, when the hydraulic oil exceeds a certain pressure value, the overflow valve 11 shunts a part of the hydraulic oil so that the hydraulic oil flows back to the oil tank 1, and the oil pressure of the hydraulic oil is kept in a certain range, thereby preventing the hydraulic pipeline from being broken.
In some embodiments, optionally, as shown in fig. 1, a filter 12 is connected to the oil inlet of the oil pump 2, so as to ensure the cleanliness of the hydraulic oil flowing into the oil pump 2.
The hydraulic system for the automobile lifter provided by the embodiment of the invention has an ascending process and a descending process, and the specific processes are as follows:
the rising process: the motor 3 drives the oil pump 2, the oil pump 2 extracts hydraulic oil in the oil tank 1, the first electromagnetic valve 7 is in a power-off state, the second electromagnetic valve 8 is in a power-off state, the hydraulic oil pumped out by the oil pump 2 sequentially flows into the lower cavity of the first oil cylinder 4 through the two-way valve 6 and the explosion-proof valve 10, and the hydraulic oil in the upper cavity of the first oil cylinder 4 flows into the lower cavity of the second oil cylinder 5, so that the two platforms 14 are lifted synchronously; in addition, when the two platforms 14 are not on the same plane, the first electromagnetic valve 7 is in a power-on state, oil pumped by the oil pump 2 flows to the upper cavity of the first oil cylinder 4 and the lower cavity of the second oil cylinder 5 through the third valve port 73 and the fourth valve port 74 after passing through the fifth valve port 75, the piston rod of the first oil cylinder 4 descends, and the piston of the second oil cylinder 5 ascends until the two platforms 14 are on the same plane, so that the leveling of the two platforms 14 is realized;
and (3) a descending process: the first electromagnetic valve 7 is in a power-off state, the second electromagnetic valve 8 is in a power-on state, hydraulic oil in the lower cavity of the first oil cylinder 4 flows to the oil tank 1 through the second electromagnetic valve 8 and the speed regulating valve 9, and hydraulic oil in the lower cavity of the second oil cylinder 5 flows to the upper cavity of the first oil cylinder 4.
In summary, the hydraulic system for the automobile elevator of the embodiment of the present invention enables the two platforms 14 to be lifted and leveled synchronously, thereby having certain popularization.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A hydraulic system for a vehicle lift for lifting a platform of the vehicle lift, comprising:
an oil tank;
the oil inlet of the oil pump is communicated with the oil tank, and the oil pump is connected with a motor for driving the oil pump to rotate;
the oil cylinders are arranged in a mode of grouping two oil cylinders in pairs, the two oil cylinders in each group are respectively a first oil cylinder and a second oil cylinder, first oil ports of the first oil cylinder and the second oil cylinder are connected with a two-way valve, piston rods of the first oil cylinder and the second oil cylinder are respectively connected with the corresponding platforms, the first oil port of the first oil cylinder is communicated with the oil pump through a one-way valve, and the first oil port of the first oil cylinder is connected with an oil return pipeline which is connected with the one-way valve in parallel;
a first solenoid valve having a first port, a second port, a third port, a fourth port, and a fifth port, the first port and the second port being in bidirectional communication, the fourth port and the fifth port both being in communication with the third port, and the third port and the fourth port being in bidirectional communication;
the hydraulic cylinder comprises a piston, a piston ring, a first valve port, a third valve port, a fourth valve port, a fifth valve port and a hydraulic oil pump, wherein the piston ring is arranged in the piston, the first valve port and the third valve port are arranged in the piston, the piston ring is arranged in the piston ring.
2. The hydraulic system for an automobile lifter according to claim 1, wherein the oil return line includes a second solenoid valve and a speed regulating valve, an oil inlet of the second solenoid valve is communicated with the two-way valve communicated with the first oil port of the first oil cylinder, an oil outlet of the second solenoid valve is communicated with an oil inlet of the speed regulating valve, and an oil outlet of the speed regulating valve is communicated with the oil tank.
3. The hydraulic system for an automobile lift of claim 2 wherein the governor valve is an adjustable throttle valve.
4. The hydraulic system for an automobile lift according to claim 1, wherein an explosion-proof valve is connected between the cylinder and the two-way valve.
5. The hydraulic system for an automobile lifter according to claim 1, further comprising an overflow valve, an oil inlet of the overflow valve being communicated with an oil outlet of the oil pump, and an oil outlet of the overflow valve being communicated with the oil tank.
6. The hydraulic system for an automobile lift of claim 1 wherein a filter is connected to the oil inlet of the oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010805403.9A CN111997944A (en) | 2020-08-11 | 2020-08-11 | Hydraulic system for automobile lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010805403.9A CN111997944A (en) | 2020-08-11 | 2020-08-11 | Hydraulic system for automobile lifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111997944A true CN111997944A (en) | 2020-11-27 |
Family
ID=73463123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010805403.9A Pending CN111997944A (en) | 2020-08-11 | 2020-08-11 | Hydraulic system for automobile lifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111997944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412906A (en) * | 2020-12-04 | 2021-02-26 | 广州赫力汽车维修设备有限公司 | Hydraulic control system for lifting machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564867A (en) * | 2014-12-26 | 2015-04-29 | 徐州海伦哲专用车辆股份有限公司 | Hydraulic system of aerial operation truck with two folding booms |
| CN105035997A (en) * | 2015-08-05 | 2015-11-11 | 广州高昌液压机电技术有限公司 | Two-pillar two-pull-up oil cylinder balance control system |
| CN105110236A (en) * | 2015-08-07 | 2015-12-02 | 广州高昌液压机电技术有限公司 | PC program control soft starting and falling device |
| CN106837905A (en) * | 2017-03-17 | 2017-06-13 | 合肥佳航机电设备有限公司 | A kind of synchronous eight cylinder hydraulic systems of shearing type lifting machine platform |
| CN207212799U (en) * | 2017-09-13 | 2018-04-10 | 广州高昌机电股份有限公司 | A kind of soft oil route controller of shearing type lifter |
| CN108317115A (en) * | 2018-04-09 | 2018-07-24 | 中山市颉榕汽车维修检测设备有限公司 | Shearing type lifter levelling device, hoisting system and shearing type lifter |
| CN207795710U (en) * | 2017-12-29 | 2018-08-31 | 江苏威博液压股份有限公司 | A kind of four road self-locking scissor platform power units |
-
2020
- 2020-08-11 CN CN202010805403.9A patent/CN111997944A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564867A (en) * | 2014-12-26 | 2015-04-29 | 徐州海伦哲专用车辆股份有限公司 | Hydraulic system of aerial operation truck with two folding booms |
| CN105035997A (en) * | 2015-08-05 | 2015-11-11 | 广州高昌液压机电技术有限公司 | Two-pillar two-pull-up oil cylinder balance control system |
| CN105110236A (en) * | 2015-08-07 | 2015-12-02 | 广州高昌液压机电技术有限公司 | PC program control soft starting and falling device |
| CN106837905A (en) * | 2017-03-17 | 2017-06-13 | 合肥佳航机电设备有限公司 | A kind of synchronous eight cylinder hydraulic systems of shearing type lifting machine platform |
| CN207212799U (en) * | 2017-09-13 | 2018-04-10 | 广州高昌机电股份有限公司 | A kind of soft oil route controller of shearing type lifter |
| CN207795710U (en) * | 2017-12-29 | 2018-08-31 | 江苏威博液压股份有限公司 | A kind of four road self-locking scissor platform power units |
| CN108317115A (en) * | 2018-04-09 | 2018-07-24 | 中山市颉榕汽车维修检测设备有限公司 | Shearing type lifter levelling device, hoisting system and shearing type lifter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412906A (en) * | 2020-12-04 | 2021-02-26 | 广州赫力汽车维修设备有限公司 | Hydraulic control system for lifting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101586584A (en) | A kind of high level, tall and slender structure construction creeping formwork hydraulic synchronous control system | |
| CN206872378U (en) | A kind of aerial work platform hydraulic energy-saving system with no-load protection | |
| CN201225344Y (en) | Building construction mould climbing jacking synchronous control system | |
| CN106837905B (en) | A kind of synchronous eight cylinder hydraulic systems of shearing type lifting machine platform | |
| CN112412906A (en) | Hydraulic control system for lifting machine | |
| CN111997944A (en) | Hydraulic system for automobile lifter | |
| CN203717551U (en) | Power unit of pallet truck | |
| CN111997945A (en) | Hydraulic system for automobile lifter | |
| CN207212799U (en) | A kind of soft oil route controller of shearing type lifter | |
| CN204569290U (en) | Planer-type lifting machine | |
| CN110410386A (en) | Three-dimensional public transport garage hydraulic power jacking system | |
| CN110203845A (en) | A kind of hydraulic control system for four column lifting mechanisms | |
| CN102616700A (en) | Oil and air hybrid driven lifting control device | |
| CN213331741U (en) | Hydraulic system for automobile lifter | |
| CN213899442U (en) | Hydraulic control system for lifting machine | |
| CN207243346U (en) | A kind of hydraulic jack | |
| CN211110814U (en) | Novel aircraft jacking hydraulic system | |
| CN2725603Y (en) | Tower crane hydraulic pump station | |
| CN114370437A (en) | Scissor-fork type aerial work platform lifting hydraulic control system | |
| CN205331103U (en) | A hydraulic system for controlling paver aircraft bonnet and ceiling lift | |
| CN110510540B (en) | Aircraft jacking hydraulic system | |
| CN2753712Y (en) | Dual fork platform synchronous lifting control device | |
| CN204661231U (en) | The lifting machine of four-column type band secondary lifting | |
| CN110862047A (en) | Hydraulic control device and method for explosion-proof synchronous circuit for elevator | |
| CN105129667A (en) | Large-tonnage shearing type four-set cross series-connection horizontal adjustment and control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |
|
| RJ01 | Rejection of invention patent application after publication |