CN113983010A - Hydraulic system for regulating and controlling loading platform - Google Patents
Hydraulic system for regulating and controlling loading platform Download PDFInfo
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- CN113983010A CN113983010A CN202111275183.4A CN202111275183A CN113983010A CN 113983010 A CN113983010 A CN 113983010A CN 202111275183 A CN202111275183 A CN 202111275183A CN 113983010 A CN113983010 A CN 113983010A
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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
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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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
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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
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The application relates to a hydraulic system for regulating and controlling a loading and unloading platform, which comprises an execution module, an oil supply module and a regulation and control module, wherein the execution module is used for driving the loading and unloading platform to move; the execution module comprises a lifting cylinder body which is connected with the loading and unloading platform and is used for driving the loading and unloading platform to lift and a regulating cylinder body which is used for regulating the angle of the loading and unloading platform; the control module comprises an oil supply pipeline and an oil return pipeline which are simultaneously connected with the oil supply module, a first connecting pipeline connected with the lifting cylinder body and a second connecting pipeline connected with the adjusting cylinder body, and the first connecting pipeline and the second connecting pipeline are both communicated with the oil supply pipeline and the oil return pipeline; the hydraulic system also comprises a switch assembly and a controller for controlling the switch assembly to work, and the switch assembly is used for adjusting the opening and closing of the oil return pipeline, the first connecting pipeline and the second connecting pipeline. This application has and reduces the use that causes inconvenience to loading platform, promotes the suitability, the effect.
Description
Technical Field
The application relates to the field of hydraulic pressure regulation and control, in particular to a hydraulic system for regulating and controlling a loading platform.
Background
The tail part of the vehicle for transporting goods is generally provided with a loading and unloading platform for assisting in loading and unloading goods, so that the labor intensity of workers is reduced, and the loading and unloading efficiency of the goods is improved.
Referring to fig. 1, a schematic diagram of a loading platform on a vehicle in the related art is shown, wherein the loading platform is a plate-shaped structure and is connected to a rear portion of the vehicle through a lifting arm, and two ends of the lifting arm are respectively rotatably connected to the rear portion of the vehicle and the loading platform; a hydraulic system for adjusting the position and the angle of the loading and unloading platform is also arranged between the loading and unloading platform and the vehicle, and the loading and unloading platform can automatically drop head and automatically raise head before leaving the ground when contacting the ground through the regulating module 3, so that the loading and unloading platform can keep a normal lifting process.
Referring to fig. 2, the hydraulic system includes an execution module 1, an oil supply module 2 for supplying power to the execution mechanism, and a regulation module 3 disposed between the oil supply module 2 and the execution module 1; the execution module 1 comprises a lifting cylinder body 11 for driving the loading and unloading platform to lift and an adjusting cylinder body 12 for adjusting the angle of the loading and unloading platform, the regulation and control module 3 comprises a first pipeline 31 and a second pipeline 32 which are connected with the oil supply module 2, the end parts of the first pipeline 31 and the second pipeline 32 are respectively connected with two oil through ports of a pressurizing cylinder body 33, and meanwhile, the lifting cylinder body 11 and the adjusting cylinder body 12 are respectively communicated with the two oil through ports of the pressurizing cylinder body 33; wherein, the second pipeline 32 is connected with the oil outlet end of the oil supply module 2; the first pipeline 31 is provided with a first oil return valve 311 and a first throttle valve 312 which are connected in series, and the first oil return valve 311 is positioned on one side of the first throttle valve 312 facing the oil supply module 2; the second pipeline 32 is provided with a second throttle valve 321; a switching pipeline 34 is connected between the first pipeline 31 and the second pipeline 32, one end of the switching pipeline 34 is located between the first throttle 312 and the first oil return valve 311, and the other end is located on a side of the second throttle 321 facing the oil supply module 2.
When the loading and unloading platform is regulated, the loading and unloading platform is driven to descend to a state of abutting against the ground through the lifting cylinder body 11, at the moment, the lifting cylinder body 11 stops acting due to the limitation of the ground, the regulating cylinder body 12 continues to retract under the action of gravity, the pressure of one end, connected with the first pipeline 31, of the pressurizing cylinder body 33 is smaller than that of one end, connected with the second pipeline 32, of the pressurizing cylinder body 33, so that the pressurizing cylinder body 33 is recovered under the action of pressure, and the loading and unloading platform is driven to realize head lowering action; before the loading and unloading platform lifts the head, the pressurizing cylinder body 33 is driven to eject out under the action of the pressure difference between the two ends of the pressurizing cylinder body 33, and the loading and unloading platform is driven to realize the head lifting action.
With respect to the related art in the above, the inventors found that: in actual use, pressure boost cylinder body 33 can occupy great space, and pressure boost cylinder body 33's weight is very big, can increase holistic weight for the holistic use of this loading platform receives great restriction, is comparatively inconvenient when being applied to current vehicle with this loading platform.
Disclosure of Invention
In order to reduce and cause inconvenience to the use of loading platform, promote the suitability, this application provides a hydraulic system is used in loading platform regulation and control.
The application provides a hydraulic system for regulation and control of loading platform adopts following technical scheme:
a hydraulic system for regulating and controlling a loading and unloading platform comprises an execution module, an oil supply module and a regulation and control module, wherein the execution module is used for driving the loading and unloading platform to move;
the execution module comprises a lifting cylinder body which is connected with the loading and unloading platform and is used for driving the loading and unloading platform to lift and a regulating cylinder body which is used for regulating the angle of the loading and unloading platform;
the regulating module comprises an oil supply pipeline and an oil return pipeline, the oil supply pipeline and the oil return pipeline are both connected with the oil supply module, the oil supply pipeline is communicated with one end, far away from the oil supply module, of the oil return pipeline through a pipeline, the pipeline is communicated with the oil supply pipeline at a point A, and the pipeline is communicated with the oil return pipeline at a point B;
the lifting cylinder body is connected with a first connecting pipeline, the adjusting cylinder body is connected with a second connecting pipeline, and the first connecting pipeline and the second connecting pipeline are respectively communicated to one point of the point A and the point B;
the regulation and control module further comprises a switch assembly and a controller for controlling the switch assembly to work, and the controller is used for regulating the opening and closing of the oil return pipeline, the first connecting pipeline and the second connecting pipeline.
By adopting the technical scheme, the plurality of valve bodies are used for replacing the pressure cylinder, the head raising and lowering control of the loading and unloading platform is realized, a larger space is saved, when the loading and unloading platform and the hydraulic system are applied to the existing vehicle, the limitation caused by the space problem is not easy to generate, and the applicability is improved; compared with the scheme of using a pressure cylinder, the hydraulic system reduces the self weight and has higher working efficiency in the process of loading and unloading goods; compare in the scheme that realizes loading and unloading platform regulation through the pressurized cylinder among the correlation technique, the hydraulic system disclosed in this application can be alone, independent realization to the regulation and control of lift cylinder body and regulation cylinder body, has promoted the convenience of control.
Optionally, an adjusting valve is arranged on the second connecting pipeline, and the oil flow in the second connecting pipeline is adjusted and controlled by the adjusting valve.
Through adopting above-mentioned technical scheme, adjust the flow of fluid in the second connecting line, can directly adjust the action speed of adjusting the cylinder body, realize the regulation to loading and unloading platform new line, low head speed, it is comparatively convenient to operate.
Optionally, the second connection pipeline includes a first pressure regulating pipeline and a second pressure regulating pipeline which are arranged in parallel; a first check valve is connected in series on the first pressure regulating pipeline, the liquid flowing direction of the first check valve faces the regulating cylinder body, and a first regulating valve connected in parallel with the first check valve is also connected on the first pressure regulating pipeline; a second check valve is connected in series on the second pressure regulating pipeline, the liquid flowing direction of the second check valve is far away from the regulating cylinder body, and a second regulating valve connected in parallel with the second check valve is also connected on the second pressure regulating pipeline;
when the oil supply module supplies oil to the adjusting cylinder body, the first pipeline and the oil return pipeline are closed, and one of the first pressure adjusting pipeline and the second pressure adjusting pipeline is open;
when the adjusting cylinder body returns oil to the oil supply module, the first pipeline and the oil supply pipeline are closed, and one of the first pressure adjusting pipeline and the second pressure adjusting pipeline is opened.
When the loading and unloading platform is static or only the lifting cylinder body acts, the first pressure regulating pipeline and the second pressure regulating pipeline are closed simultaneously.
By adopting the technical scheme, the first electromagnetic valve is controlled to be closed and the second electromagnetic valve is controlled to be communicated in the process of supplying oil to the adjusting cylinder body, so that oil passes through the adjusting cylinder body through the second adjusting valve; so, drive the in-process that loading and unloading platform realized raising, lowering the head action at adjusting the cylinder body, can realize the regulation and control to fluid flow through second governing valve and first governing valve respectively, can control the speed that loading and unloading platform raised, lowered the head promptly, can regulate and control speed according to the actual need when using, promote the suitability.
Optionally, the switch assembly includes a first solenoid valve connected in series to the first pressure regulating pipeline and a second solenoid valve connected in series to the second pressure regulating pipeline;
when the oil supply module supplies oil to the adjusting cylinder body, the first pipeline and the oil return pipeline are closed, and one of the first electromagnetic valve and the second electromagnetic valve is open;
when the adjusting cylinder body returns oil to the oil supply module, the first pipeline and the oil supply pipeline are closed, and one of the first electromagnetic valve and the second electromagnetic valve is opened.
Optionally, the switch assembly comprises a three-position four-way valve, the middle part of the first pressure regulating pipeline is disconnected from the middle part of the second pressure regulating pipeline, four power-off points of the first pressure regulating pipeline and the second pressure regulating pipeline are respectively connected to four contact points of the three-position four-way valve, the three-position four-way valve is used for controlling the first pressure regulating pipeline and the second pressure regulating pipeline to respectively process a communicated state, or the first pressure regulating pipeline and the second pressure regulating pipeline are simultaneously in a closed state.
By adopting the technical scheme, in the working process, when the first pressure regulating pipeline and the second pressure regulating pipeline are regulated and controlled, only one signal is needed to control the three-position four-way valve to act, the control method is simplified, the operation is more convenient, meanwhile, the integration level of the hydraulic system can be further improved, and the occupied space is reduced.
Optionally, the first regulating valve is a throttle valve or a speed regulating valve, and the second regulating valve is a throttle valve or a speed regulating valve.
Optionally, a lifting regulating valve is connected in series on the first connecting pipeline and used for regulating the flow of oil in the first connecting pipeline.
Through adopting above-mentioned technical scheme, the logical liquid flow in the adjustment first connecting line that can be comparatively convenient, and then realize the regulation to lift cylinder body action speed, in actual construction, use, the displacement rate of regulation loading platform that can be comparatively convenient.
Optionally, an overflow valve is connected between the oil supply pipeline and the oil return pipeline, and the liquid flowing direction of the overflow valve faces one side of the oil return pipeline.
By adopting the technical scheme, the lifting cylinder body and the adjusting cylinder body stop acting in the oil supply process of the lifting cylinder body or the adjusting cylinder body, but the power part continuously conveys oil, so that the pressure of the oil in the oil supply pipeline is increased, and after the pressure difference between the oil supply pipeline and the oil return pipeline reaches a certain value, the oil in the oil supply pipeline flows back to the liquid storage tank through the overflow valve and the oil return pipeline, thereby reducing the problems of pipeline and component damage and the like.
Optionally, the oil supply module comprises a liquid storage tank and a power part connected to the liquid storage tank, and the oil supply pipeline is connected with the power part; still install level gauge and the clear filter of air in the liquid reserve tank, the clear filter of air is used for communicateing inside and outside the reservoir.
Through adopting above-mentioned technical scheme, can be comparatively convenient monitor the fluid volume in the receiver, under the too little condition of fluid volume appearance, need detect and judge the problem that whether appears the weeping, or belong to normal loss to repair and supply fluid, reduce to appear because of the fluid volume is few, to the lift cylinder body, adjust the normal work of cylinder body and cause the phenomenon of interference.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the hydraulic system is arranged to replace an original pressure cylinder system, and the switch assembly is controlled by the controller to control the opening and closing of the multi-channel pipeline in the process of controlling the lifting cylinder body and the adjusting cylinder body to work, so that the lifting cylinder body and the adjusting cylinder body are regulated and controlled;
2. in the process of supplying oil to the adjusting cylinder body, the first electromagnetic valve is controlled to be closed, the second electromagnetic valve is controlled to be communicated, so that oil passes through the second adjusting valve to the adjusting cylinder body, in the process of refluxing the oil in the adjusting cylinder body, the first electromagnetic valve is controlled to be communicated, the second electromagnetic valve is controlled to be closed, and the oil in the adjusting cylinder body reflows through the first adjusting valve; so, drive the in-process that loading and unloading platform realized raising, lowering the head action at adjusting the cylinder body, can realize the regulation and control to fluid flow through second governing valve and first governing valve respectively, can control the speed that loading and unloading platform raised, lowered the head promptly, can regulate and control speed according to the actual need when using, promote the suitability.
Drawings
FIG. 1 is a schematic view of a mounting structure of a loading dock according to the related art;
FIG. 2 is a schematic illustration of a hydraulic control system for a loading dock of the related art;
FIG. 3 is a schematic illustration of a hydraulic system according to an embodiment of the present application;
FIG. 4 is a schematic view of the oil flow path during a turndown condition of the platform;
FIG. 5 is a schematic view of an oil flow path in a condition of adjusting the head-up speed of the loading platform;
FIG. 6 is a schematic view of the oil flow path during the rapid head-up condition of the loading platform;
FIG. 7 is a schematic view of the oil flow path during the rapid lowering of the platform;
FIG. 8 is a schematic view of the oil flow path when the lifting platform is lifted;
FIG. 9 is a schematic view of the oil flow path with the loading platform lowered;
FIG. 10 is a schematic illustration of a hydraulic system for regulating the lowering speed of the loading dock;
FIG. 11 is a schematic diagram of a hydraulic system using a three-position, four-way valve to replace a first solenoid valve and a second solenoid valve.
Description of reference numerals: 1. an execution module; 11. a lifting cylinder body; 12. adjusting the cylinder body; 2. an oil supply module; 21. a liquid storage tank; 22. a power member; 23. a filter; 24. a liquid level meter; 25. an air cleaner; 3. a regulation module; 31. a first pipeline; 311. a first oil return valve; 312. a first throttle valve; 32. a second pipeline; 321. a second throttle valve; 33. a pressurizing cylinder body; 34. switching pipelines; 35. an oil supply line; 351. an oil supply check valve; 36. an oil return line; 361. a flow regulating valve; 4. a first connecting line; 41. a lifting one-way valve; 42. a lifting regulating valve; 5. a second connecting line; 51. a first pressure regulating line; 511. a first check valve; 512. a first regulating valve; 52. a second pressure regulating pipeline; 521. a second one-way valve; 522. a second regulating valve; 6. a switch assembly; 61. a lifting solenoid valve; 62. a first solenoid valve; 63. a second solenoid valve; 64. an oil return electromagnetic valve; 65. a three-position four-way valve; 7. an overflow valve.
Detailed Description
The present application is described in further detail below with reference to figures 3-11.
The embodiment of the application discloses a hydraulic system for regulating and controlling a loading and unloading platform, which is used for regulating the height and the angle of the loading and unloading platform, and referring to fig. 3, the hydraulic system comprises an execution assembly 1 for driving the loading and unloading platform to move, an oil supply assembly 2 for providing power for the execution assembly 1, and a regulating and controlling assembly 3 arranged between the oil supply assembly 2 and the execution assembly 1, and the action of the execution assembly 1 is controlled by the regulating and controlling assembly 3; the execution assembly 1 comprises a lifting cylinder body 11 for driving the loading and unloading platform to lift and an adjusting cylinder body 12 for adjusting the angle of the loading and unloading platform, wherein the lifting cylinder body 11 and the adjusting cylinder body 12 in the application use a hydraulic oil cylinder as an example; the oil supply assembly 2 comprises a liquid storage tank 21 and a power part 22, the power part 22 and the liquid storage tank 21 are communicated with each other to discharge stored liquid in the liquid storage tank, specifically, the power part 22 can select an oil pump, and a filter 23 is arranged between the oil pump and the liquid storage tank 21 and used for filtering oil discharged from the liquid storage tank 21, so that the problem of blockage of an oil through pipeline or a hydraulic oil cylinder is solved.
Referring to fig. 3, the regulation and control assembly 3 includes an oil supply line 35 and an oil return line 36, wherein the oil supply line 35 is connected to the oil pump, the oil return line 36 is directly communicated with the interior of the liquid storage tank 21, the end portions of the oil supply line 35 and the oil return line 36 far away from the liquid storage tank 21 are communicated through a pipeline, the pipeline is communicated with the oil supply line 35 at a point a, and the pipeline is communicated with the oil return line 36 at a point B; a first connecting pipeline 4 is connected to the lifting cylinder body 11, and the first connecting pipeline 4 is communicated with a point A; the adjusting cylinder body 12 is connected with a second connecting pipeline 5, and the second connecting pipeline 5 is communicated with the point B; the second connecting line 5 includes a first pressure regulating line 51 and a second pressure regulating line 52 that are arranged in parallel with each other; the control assembly 3 further comprises a switch assembly 6 and a controller for controlling the switch assembly 6 to work, the switch assembly 6 comprises a lifting solenoid valve 61 installed on the first connecting pipeline 4, a first solenoid valve 62 installed on the first pressure regulating pipeline 51, a second solenoid valve 63 installed on the second pressure regulating pipeline 52 and an oil return solenoid valve 64 installed on the oil return pipeline 36, and the controller controls the opening and closing of the solenoid valves to realize the opening and closing of each pipeline.
Referring to fig. 3, the first pressure regulating pipeline 51 is provided with a first check valve 511, the liquid flowing direction of the first check valve 511 faces the regulating cylinder 12 and is connected in series with the first electromagnetic valve 62, the first pressure regulating pipeline 51 is further provided with a first regulating valve 512, and the first regulating valve 512 is connected in parallel with the first check valve 511; the second pressure regulating pipeline 52 is provided with a second one-way valve 521, the liquid flowing direction of the second one-way valve 521 faces the direction far away from the regulating cylinder 12 and is connected with the second electromagnetic valve 63 in series, a second regulating valve 522 is further installed on the second pressure regulating pipeline 52, and the second regulating valve 522 is connected with the second one-way valve 521 in parallel; in the practical implementation process, the first regulating valve 512 can select a throttle valve or a speed regulating valve, and the second regulating valve 522 can also select a throttle valve or a speed regulating valve, so that the regulation of the flow rate of the oil in the pipeline can be realized.
Referring to fig. 4, the flow path of the oil is shown in a state where the loading platform is loaded to perform lowering, the oil in the adjusting cylinder 12 is discharged under load, meanwhile, under the control of a signal sent by the controller, the first solenoid valve 62 and the oil return solenoid valve 64 are energized to operate and both are in a communication state, at this time, the first pressure regulating pipeline 51 and the oil return pipeline 36 are in a communication state, in this state, the other solenoid valves are in a power-off closed state, and in addition, because the liquid flowing direction of the first regulating valve 512 is toward the adjusting cylinder 12, when the oil in the adjusting cylinder 12 flows back to the liquid storage tank 21 through the first pressure regulating pipeline 51, the first check valve 511 is in a blocking state, the oil can only flow from the path of the first regulating valve 512, that is, the oil in the adjusting cylinder 12 flows back to the liquid storage tank 21 through the first regulating valve 512, the first solenoid valve 62 and the oil return solenoid valve 64, the head lowering action is realized; in the process that the loading and unloading platform finishes the head lowering action, the opening degree of the throttling port of the first regulating valve 512 is regulated, so that the flow of the oil liquid flowing in the first pressure regulating pipeline 51 can be regulated, and the head lowering speed can be regulated.
Referring to fig. 5, a flow path of oil is shown when the loading platform is under a load and is in a head-up state, the oil pump pumps out the oil in the liquid storage tank 21, the controller controls the second electromagnetic valve 63 to be energized to operate, so that the second connecting pipeline 5 is communicated, and other electromagnetic valves are all in a power-off closed state; in the process that the loading and unloading platform finishes the head-up action, the opening degree of the throttling opening of the second regulating valve 522 is regulated, so that the flow of the oil liquid flowing in the second pressure regulating pipeline 52 can be regulated, and the head-up speed can be regulated.
By arranging the hydraulic system, the plurality of valve bodies are used for replacing a pressure cylinder, the head raising and lowering control of the loading and unloading platform is realized, a large space is saved, when the loading and unloading platform and the hydraulic system are applied to the conventional vehicle, the limitation caused by the space problem is not easy to generate, and the applicability is improved; compared with the scheme of using a pressure cylinder, the hydraulic system reduces the self weight and has higher working efficiency in the process of loading and unloading goods; compared with the scheme of adjusting the loading and unloading platform through the pressure cylinder in the related art, the hydraulic system disclosed by the application can independently and independently adjust and control the lifting cylinder body 11 and the adjusting cylinder body 12, and the convenience of control is improved.
Meanwhile, in the process of lowering and raising the head, the oil respectively passes through the first regulating valve 512 and the second regulating valve 522, the speed and the flow of the oil passing through the first regulating valve 512 and the second regulating valve 522 are regulated by regulating the opening degrees of the throttling orifices of the first regulating valve 512 and the second regulating valve 522, namely the telescopic speed of the cylinder body 12 can be regulated, the lowering and raising speed of the loading and unloading platform is regulated to a proper speed or a required speed value, the accuracy of regulating the loading and unloading platform by the hydraulic system is improved, in the process of passing the oil through the first regulating valve 512 or the second regulating valve 522, only corresponding passages are in a communicated state, other passages are in a closed state, the telescopic speed of the cylinder body 12 can be regulated more accurately and more conveniently.
The adjusting cylinder body 12 drives the loading platform to realize head-lowering and head-raising actions, and simultaneously drives the loading platform to realize door-closing and door-opening actions, namely, door-closing, namely, the loading platform is folded to be used as a rear side baffle of the vehicle or attached to the rear side of the carriage, and correspondingly, the door-opening is realized, namely, the loading platform is adjusted to be in a flat-lying state to assist in loading and unloading goods; referring to fig. 6, a circulation path of oil in the process of controlling the loading and unloading platform to close the door is shown, the controller controls the first electromagnetic valve 62 to be powered on and operated, the first electromagnetic valve 62 is in an open state, the second electromagnetic valve 63 is in a closed state, at this time, the first check valve 511 is in a circulation state, the oil is driven by the oil pump to be introduced into the adjusting cylinder 12 through the first electromagnetic valve 62 and the first check valve 511 which are opened in sequence, so that the adjusting cylinder 12 extends out quickly, the loading and unloading platform is driven to close, the oil flows through the first check valve 511 in the process, the path is in a completely open state, the oil can be introduced into the adjusting cylinder 12 at the fastest speed, and the quick operation of the adjusting cylinder 12 and the loading and unloading platform is realized.
Referring to fig. 7, showing the flow path of the oil in the process of controlling the loading and unloading platform to open the door, firstly, the controller controls the oil return solenoid valve 64 and the second solenoid valve 63 to be energized, so that the two are in an open state, the first solenoid valve 62 is in a closed state, at this time, the second check valve 522 is in a flow state, the oil in the adjusting cylinder 12 sequentially flows through the second check valve 521, the second solenoid valve 63 and the oil return solenoid valve 64, and finally flows back to the liquid storage tank 21, so that the adjusting cylinder 12 is rapidly recovered, and the loading and unloading platform is driven to open.
When realizing closing the door, opening the door through this hydraulic system control loading platform, through the switching of controller control solenoid for fluid is through the transmission of the check valve that corresponds, can realize loading platform's quick switching, compares in the form through first governing valve 512 and second governing valve 522, can make loading platform accomplish in shorter time and open, close the action, the action efficiency of improvement.
Referring to fig. 8, a circulation path of oil when the loading and unloading platform is driven to ascend by the lifting cylinder 11 is shown, the controller controls the lifting solenoid valve 61 to be powered on, so that the lifting solenoid valve 61 is in an open-circuit state, the first solenoid valve 62, the second solenoid valve 63 and the oil return solenoid valve 64 are all in a power-off closed state, the oil at the oil pump is introduced into the lifting cylinder 11 through the lifting solenoid valve 61, so that the lifting cylinder 11 stretches out to drive the loading and unloading platform to ascend, at this time, the passage where the lifting solenoid valve 61 is located is in a completely opened state, so that quick oil injection to the lifting cylinder 11 can be realized, and the lifting platform is lifted quickly.
Referring to fig. 9, showing a circulation path of oil when the loading platform is driven to descend by the lifting cylinder 11, the controller controls the lifting solenoid valve 61 and the oil return solenoid valve 64 to be powered on, the lifting solenoid valve 61 and the oil return solenoid valve 64 are in an open circuit state, both the first solenoid valve 62 and the second solenoid valve 63 are in a power-off closed state, the lifting cylinder 11 is retracted under the action of an external load, and the oil in the lifting cylinder 11 flows through the lifting solenoid valve 61 and the oil return solenoid valve 64 and then flows back into the liquid storage tank 21, so that the lifting cylinder 11 is contracted to drive the loading platform to descend; in this process, the passage where the lifting solenoid valve 61 is located is in a fully open state, and the lifting cylinder body 11 can be quickly brought, that is, the loading and unloading platform is quickly lowered.
In addition, referring to fig. 10, in another embodiment, a lifting adjusting member is installed on the first connecting pipe 4, the lifting adjusting member is connected in series with the lifting solenoid valve 61, and the lifting adjusting member is located between the lifting solenoid valve 61 and the lifting cylinder 11, the lifting adjusting member includes a lifting check valve 41 and a lifting adjusting valve 42 which are arranged in parallel, the liquid passing direction of the lifting check valve 41 is set to be far away from the lifting cylinder 11, when oil is supplied to the lift cylinder 11, the lift solenoid valve 61 is energized to be opened, the first solenoid valve 62, the second solenoid valve 63, and the oil return solenoid valve 64 are all closed in the deenergized state, when the oil pump is used for supplying the oil to the lifting cylinder 11, the lifting one-way valve 41 is in a cut-off state, so that the oil flows through the lifting adjusting valve 42, the regulation and control of the oil flow can be realized by regulating the opening degree of the throttle orifice of the lifting regulating valve 42, the lifting speed of the loading and unloading platform can be adjusted by adjusting the action speed of the lifting cylinder body 11.
Meanwhile, referring to the figure, a flow regulating valve 361 is further installed on the oil return pipeline 36, and the flow regulating valve 361 is located on one side of the oil return electromagnetic valve 64 facing the oil tank; when the lifting cylinder 11 returns oil, the lifting solenoid valve 61 and the oil return solenoid valve 64 are powered on to operate in an open circuit state, the first solenoid valve 62 and the second solenoid valve 63 are both in a power-off closed circuit state, at this time, the lifting check valve 41 is in a circulation state, oil in the lifting cylinder 11 passes through the lifting check valve 41, the lifting solenoid valve 61, the oil return solenoid valve 64 and the flow regulating valve 361, and the adjustment of oil return flow is realized by adjusting and controlling the opening degree of a throttle orifice of the flow regulating valve 361, namely the descending speed of the loading and unloading platform can be adjusted and controlled by adjusting and controlling the operating speed of the lifting cylinder 11.
By the scheme, the lifting and descending speeds of the loading and unloading platform can be realized, the loading and unloading platform can be conveniently adjusted according to actual needs in the actual use process, the problem that goods are unstable due to the fact that the lifting speed of the loading and unloading platform is too high can be solved, and the use convenience is improved; in the actual design and use process, in order to adjust the lifting and lowering speed of the loading and unloading platform, the movement speed of the lifting cylinder 11 can be adjusted in the same way as the movement speed of the adjusting cylinder 12.
Referring to fig. 3, an oil supply one-way valve 351 is installed on the oil supply pipeline 35, so that in the process that oil in the lifting cylinder 11 and the adjusting cylinder 12 flows back to the liquid storage tank 21, the phenomenon that part of the oil flows back to the oil pump is not easy to occur; the overflow valve 7 is connected between the oil supply pipeline 35 and the oil return pipeline 36, the position of the overflow valve 7 connected to the oil supply pipeline 35 is located between the oil pump and the oil supply one-way valve 351, the position of the overflow valve 7 connected to the oil return pipeline 36 is located on one side of the flow regulating valve 361 facing the liquid storage tank 21, and the flow direction of the overflow valve 7 faces one side of the oil return pipeline 36, when the oil amount pumped by the oil pump is larger than the required amount, redundant part of the oil flows into the oil return pipeline 36 through the overflow valve 7 and flows back to the liquid storage tank 21, so that the problem of oil pump damage can be reduced, in addition, under the condition that the subsequent oil conveying pipeline is blocked, the pumped oil can also be shunted through the overflow valve 7, so that the problem of pipeline damage caused by overlarge pressure of the oil in the pipeline is reduced.
Referring to fig. 3, a liquid level meter 24 is fixed in the liquid storage tank 21 and is used for detecting the amount of the oil in the liquid storage tank 21, so that under the condition that the amount of the oil is reduced due to leakage or loss in the long-time use process, the oil can be supplemented in time, and the influence on the normal working process of the hydraulic system is reduced; meanwhile, an air cleaner 25 is further installed in the liquid storage tank 21, the air cleaner 25 is used for communicating the inside and the outside of the liquid storage tank 21, pressure inside and outside the liquid storage tank 21 is kept balanced in the oil liquid flowing process, meanwhile, the problem that foreign matters such as external dust enter the liquid outlet tank is not prone to occurring, and the problem that a pipeline is blocked is not prone to occurring.
Referring to fig. 11, in another embodiment, a three-position four-way valve 65 is selected instead of the first solenoid valve 62 and the second solenoid valve 63, the first pressure regulating line 51 and the second pressure regulating line 52 are disconnected therefrom, and four disconnections of the two lines are respectively connected to four junctions of the three-position four-way valve 65; when not in operation, the three-position four-way valve 65 is located at the middle static position; in the working process, the three-position four-way valve 65 is electrified to act, when the three-position four-way valve 65 is positioned at a first working position, the first pressure regulating pipeline 51 is communicated, and when the three-position four-way valve 65 is positioned at a second working position, the second pressure regulating pipeline 52 is communicated; in the working process, when the first pressure regulating pipeline 51 and the second pressure regulating pipeline 52 are regulated, only one signal is needed to control the three-position four-way valve 65 to act, the control method is simplified, the operation is more convenient, meanwhile, the integration level of the hydraulic system can be further improved, and the occupied space is reduced.
The implementation principle of the hydraulic system for regulating and controlling the loading platform in the embodiment of the application is as follows: in the process of controlling the loading and unloading platform to act, the controller controls the plurality of electromagnetic valves to be powered on and off, so that different pipelines are communicated, the lifting cylinder body 11 and the adjusting cylinder body 12 are controlled, the existing booster cylinder is replaced, firstly, when the loading and unloading platform is controlled to act in a head raising and head lowering mode, the pressure at two ends of the booster cylinder does not need to be compared as in the related technology, the corresponding oil passages can be directly controlled through the controller, the lifting and the angle of the loading and unloading platform can be respectively regulated and controlled, the influence between the lifting and the angle can be reduced, the regulation and control method and program can be simplified, and hole handling is more convenient; the loading and unloading platform and the hydraulic system are mounted on the vehicle, so that the limitation of space is reduced, and the use convenience is improved; secondly, the weight of a hydraulic system is reduced, and the hydraulic system is applied to a loading and unloading platform, so that the self weight is reduced, and the loading and unloading efficiency is improved.
In the process of controlling the lifting of the loading and unloading platform and realizing the head raising and head lowering actions, the speed of the loading and unloading platform can be adjusted, so that the actions of the loading and unloading platform are more suitable for specific working environments, the process of loading and unloading goods is more stable, and the problems of goods dumping and the like are not easy to occur.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a loading platform regulates and control uses hydraulic system which characterized in that: the hydraulic system comprises an execution module (1) for driving the loading and unloading platform to move, an oil supply module (2) for providing power for the execution module (1), and a regulation and control module (3) arranged between the oil supply module (2) and the execution module (1);
the execution module (1) comprises a lifting cylinder body (11) which is connected with the loading and unloading platform and used for driving the loading and unloading platform to lift and a regulating cylinder body (12) used for regulating the angle of the loading and unloading platform;
the regulation and control module (3) comprises an oil supply pipeline (35) and an oil return pipeline (36), the oil supply pipeline (35) and the oil return pipeline (36) are both connected with the oil supply module (2), the oil supply pipeline (35) and one end, far away from the oil supply module (2), of the oil return pipeline (36) are communicated through a pipeline, the pipeline is communicated with the oil supply pipeline (35) at a point A, and the pipeline is communicated with the oil return pipeline (36) at a point B;
a first connecting pipeline (4) is connected to the lifting cylinder body (11), a second connecting pipeline (5) is connected to the adjusting cylinder body (12), and the first connecting pipeline (4) and the second connecting pipeline (5) are respectively communicated to one point of the point A and the point B;
the regulation and control module (3) further comprises a switch assembly (6) and a controller for controlling the switch assembly (6) to work, and the controller is used for regulating the opening and closing of the oil return pipeline (36), the first connecting pipeline (4) and the second connecting pipeline (5).
2. The hydraulic system for regulating and controlling a loading platform according to claim 1, wherein: and the second connecting pipeline (5) is provided with an adjusting valve, and the oil flow in the second connecting pipeline (5) is regulated and controlled by the adjusting valve.
3. The hydraulic system for regulating and controlling a loading platform according to claim 1, wherein: the second connecting pipeline (5) comprises a first pressure regulating pipeline (51) and a second pressure regulating pipeline (52) which are arranged in parallel; a first one-way valve (511) is connected in series on the first pressure regulating pipeline (51), the liquid flowing direction of the first one-way valve (511) faces the regulating cylinder body (12), and a first regulating valve (512) which is connected with the first one-way valve (511) in parallel is also connected on the first pressure regulating pipeline (51); a second one-way valve (521) is connected in series on the second pressure regulating pipeline (52), the liquid passing direction of the second one-way valve (521) is far away from the regulating cylinder body (12), and a second regulating valve (522) which is connected with the second one-way valve (521) in parallel is also connected on the second pressure regulating pipeline (52);
when the oil supply module (2) feeds oil to the adjusting cylinder body (12), the first pipeline (31) and the oil return pipeline (36) are closed, and one of the first pressure adjusting pipeline (51) and the second pressure adjusting pipeline (52) is open;
when the adjusting cylinder body (12) returns oil to the oil supply module (2), the first pipeline (31) and the oil supply pipeline (35) are closed, and one of the first pressure adjusting pipeline (51) and the second pressure adjusting pipeline (52) is opened;
when the loading and unloading platform is static or only the lifting cylinder body (11) acts, the first pressure regulating pipeline (51) and the second pressure regulating pipeline (52) are closed simultaneously.
4. The hydraulic system for regulating a loading platform according to claim 3, wherein: the switching assembly (6) comprises a first solenoid valve (62) connected in series to the first pressure regulating line (51) and a second solenoid valve (63) connected in series to the second pressure regulating line (52);
when the oil supply module (2) supplies oil to the adjusting cylinder body (12), the first pipeline (31) and the oil return pipeline (36) are closed, and one of the first electromagnetic valve (62) and the second electromagnetic valve (63) is opened;
when the adjusting cylinder body (12) returns oil to the oil supply module (2), the first pipeline (31) and the oil supply pipeline (35) are closed, and one of the first electromagnetic valve (62) and the second electromagnetic valve (63) is opened.
5. The hydraulic system for regulating a loading platform according to claim 3, wherein: switch module (6) include tribit cross valve (65), first pressure regulating pipeline (51) and second pressure regulating pipeline (52) middle part disconnection, its four outage are connected respectively on four contacts of tribit cross valve (65), handle the connected state respectively through tribit cross valve (65) control first pressure regulating pipeline (51) and second pressure regulating pipeline (52), or first pressure regulating pipeline (51) and second pressure regulating pipeline (52) are in the closed state simultaneously.
6. The hydraulic system for regulating a loading platform according to claim 3, wherein: the first regulating valve (512) is a throttle valve or a speed regulating valve, and the second regulating valve (522) is a throttle valve or a speed regulating valve.
7. The hydraulic system for regulating and controlling a loading platform according to claim 1, wherein: and the first connecting pipeline (4) is connected with a lifting regulating valve (42) in series and used for regulating the flow of oil in the first connecting pipeline (4).
8. The hydraulic system for regulating and controlling a loading platform according to claim 1, wherein: an overflow valve (7) is connected between the oil supply pipeline (35) and the oil return pipeline (36), and the liquid flowing direction of the overflow valve (7) faces one side of the oil return pipeline (36).
9. The hydraulic system for regulating and controlling a loading platform according to claim 1, wherein: the oil supply module (2) comprises a liquid storage tank (21) and a power part (22) connected to the liquid storage tank (21), and the oil supply pipeline (35) is connected with the power part (22); still install level gauge (24) and air cleaner (25) in liquid reserve tank (21), air cleaner (25) are used for communicateing the liquid reserve tank (21) inside and outside.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111275183.4A CN113983010A (en) | 2021-10-29 | 2021-10-29 | Hydraulic system for regulating and controlling loading platform |
| PCT/CN2021/138965 WO2023070896A1 (en) | 2021-10-29 | 2021-12-17 | Hydraulic system for adjusting and controlling loading and unloading platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111275183.4A CN113983010A (en) | 2021-10-29 | 2021-10-29 | Hydraulic system for regulating and controlling loading platform |
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| Publication Number | Publication Date |
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| CN113983010A true CN113983010A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111275183.4A Pending CN113983010A (en) | 2021-10-29 | 2021-10-29 | Hydraulic system for regulating and controlling loading platform |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113983010A (en) |
| WO (1) | WO2023070896A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658705A (en) * | 2022-03-11 | 2022-06-24 | 东方空间技术(山东)有限公司 | Rocket supporting platform and rocket pose adjusting method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3945736B2 (en) * | 1999-09-10 | 2007-07-18 | 株式会社日立国際電気 | Substrate processing apparatus and semiconductor device manufacturing method |
| JP2008286306A (en) * | 2007-05-17 | 2008-11-27 | Nippon Lift Kk | Power unit for lifting device |
| CN201236861Y (en) * | 2007-10-11 | 2009-05-13 | 张波 | Miniature hydraulic power unit used for van tailboard |
| CN101418824A (en) * | 2007-10-23 | 2009-04-29 | 上海华虹Nec电子有限公司 | Device for adjusting driving speed of cylinder |
| JP4982325B2 (en) * | 2007-10-24 | 2012-07-25 | 極東開発工業株式会社 | Loading platform lifting device |
| CN105805062B (en) * | 2016-03-24 | 2018-10-26 | 中国北方车辆研究所 | Vehicle appearance is adjustable hydro-pneumatic suspension system |
| CN207361415U (en) * | 2017-06-03 | 2018-05-15 | 南京比例液压技术有限公司 | Hydraulic platform is unloaded after a kind of lorry |
| CN207451510U (en) * | 2017-10-30 | 2018-06-05 | 惠州比亚迪电池有限公司 | A kind of hydraulic pressure lifting device and tractor |
| CN209426643U (en) * | 2018-12-06 | 2019-09-24 | 徐工集团工程机械有限公司 | Tailgate system and vehicle |
| CN211550120U (en) * | 2020-01-09 | 2020-09-22 | 深圳市凯卓立液压设备股份有限公司 | Automatic head lowering and raising control system for hydraulic tail plate |
-
2021
- 2021-10-29 CN CN202111275183.4A patent/CN113983010A/en active Pending
- 2021-12-17 WO PCT/CN2021/138965 patent/WO2023070896A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658705A (en) * | 2022-03-11 | 2022-06-24 | 东方空间技术(山东)有限公司 | Rocket supporting platform and rocket pose adjusting method |
| CN114658705B (en) * | 2022-03-11 | 2023-09-08 | 东方空间技术(山东)有限公司 | Rocket supporting platform and rocket pose adjusting method |
Also Published As
| Publication number | Publication date |
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| WO2023070896A1 (en) | 2023-05-04 |
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