CN210065090U - Arm-type high altitude construction platform is with automatically controlled constant voltage hydraulic system - Google Patents
Arm-type high altitude construction platform is with automatically controlled constant voltage hydraulic system Download PDFInfo
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- CN210065090U CN210065090U CN201920873522.0U CN201920873522U CN210065090U CN 210065090 U CN210065090 U CN 210065090U CN 201920873522 U CN201920873522 U CN 201920873522U CN 210065090 U CN210065090 U CN 210065090U
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Abstract
An electric control constant-pressure hydraulic system for an arm type aerial work platform comprises a setting module and a main control module, wherein the setting module is used for adjusting the output load pressure of the hydraulic system, the setting module comprises an electric control proportion constant-pressure pump, an electric proportion overflow valve is arranged on the electric control proportion constant-pressure pump, the output pressure of the electric control proportion constant-pressure pump is set according to the current value of the electric proportion overflow valve, the main control module is electrically connected with the setting module, the main control module is used for transmitting an electric signal to the setting module, a valve group module and an execution module are sequentially connected to the setting module, and the valve group module is used for establishing a shuttle valve network; the response speed is fast, the purposes of heating and heating of the system and oil consumption of the vehicle can be effectively reduced, and the system has the advantages of high efficiency, energy conservation and easiness in control.
Description
The technical field is as follows:
the utility model relates to an automatically controlled constant voltage hydraulic system is used to arm-type aerial working platform.
Background art:
the arm type aerial work platform is a product for movable aerial work such as aerial work, equipment installation, maintenance and the like in various industries; the working principle is as follows: hydraulic oil is pressurized by a vane pump, and enters the lower end of the hydraulic cylinder through an oil filter, an explosion-proof electromagnetic directional valve, a throttle valve, a hydraulic control one-way valve and a balance valve, so that a piston of the hydraulic cylinder moves upwards to lift a heavy object, return oil at the upper end of the hydraulic cylinder returns to an oil tank through the explosion-proof electromagnetic directional valve, the rated pressure of the hydraulic cylinder is adjusted through an overflow valve, and a pressure gauge is used for observing the reading value of the pressure gauge.
The arm type aerial working platform can be divided into a scissor type aerial working platform, a vehicle-mounted aerial working platform, a crank arm type aerial working platform, a self-propelled aerial working platform, an aluminum alloy aerial working platform, an explosion-proof aerial working platform, a trailer type aerial working platform, an electric aerial working platform, a self-propelled straight arm aerial working platform, an off-road type aerial working platform and an omnidirectional self-propelled aerial working platform.
At present, the mainstream electric control constant-pressure hydraulic system for the arm-type aerial work platform mainly comprises a constant-pressure system and a load sensitive system, wherein the constant-pressure system generally adopts a fixed constant-pressure set value, and although the flow of the system can be supplied and needed after the constant-pressure system is adopted, the fixed constant-pressure set value causes redundant pressure loss, namely redundant power loss, so that redundant heating temperature rise and oil consumption increase of the system are caused.
The utility model has the following contents:
the embodiment of the utility model provides an automatically controlled constant voltage hydraulic system is used to arm-type aerial working platform, result reasonable in design adopts automatically controlled proportion constant pressure pump to replace current constant pressure pump, has realized the infinitely variable control of constant pressure system constant pressure setting value, has reduced generating heat of operation platform, has reduced the consumption, has solved the problem that exists among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides an automatically controlled constant voltage hydraulic system is used to arm-type aerial working platform, includes setting module and host system, the setting module is used for adjusting hydraulic system's output load pressure, the setting module includes automatically controlled proportion constant pressure pump, is equipped with the electric proportion overflow valve on automatically controlled proportion constant pressure pump, the output pressure of automatically controlled proportion constant pressure pump basis the current value of electric proportion overflow valve sets up, host system and the electrical connection of setting module, host system is used for transmitting the signal of telecommunication to the setting module, connects gradually valve group module and execution module on the setting module, the valve group module is used for establishing the shuttle valve network.
The execution module is provided with a plurality of pressure sensors, and the pressure sensors are used for acquiring the real-time load pressure of the execution module.
The number of the pressure sensors is 2-5.
And a constant pressure difference valve is arranged in the valve group module and used for reducing the load pressure.
The valve group module is connected with the execution module through an oil way.
The model of the main control module is STM32F 103.
The utility model adopts the above structure, the current signals of different levels are transmitted to the electric proportional overflow valve through the main control module, so as to adjust the constant pressure of the electric proportional constant pressure pump to output different values; the valve bank module is used for establishing an oil path access, the pressure sensor is used for acquiring the real-time load pressure of the actuating element, and the main control module is used for outputting a corresponding current signal to be transmitted to the electric control proportion constant pressure pump.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, the device comprises a setting module 1, a main control module 2, an electric control proportion constant pressure pump 3, an electric proportion overflow valve 4, a valve bank module 5, an execution module 6, an execution module 7, a pressure sensor 8 and a constant pressure difference valve.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1, an electronic control constant pressure hydraulic system for an arm-type aerial work platform includes a setting module 1 and a main control module 2, the setting module 1 is used for adjusting an output load pressure of the hydraulic system, the setting module 1 includes an electronic control proportion constant pressure pump 3, an electronic proportion overflow valve 4 is arranged on the electronic control proportion constant pressure pump 3, the output pressure of the electronic control proportion constant pressure pump 3 is set according to a current value of the electronic proportion overflow valve 4, the main control module 2 is electrically connected with the setting module 1, the main control module 2 is used for transmitting an electric signal to the setting module 1, a valve group module 5 and an execution module 6 are sequentially connected to the setting module 1, and the valve group module 5 is used for establishing a shuttle valve network.
The execution module 6 is provided with a plurality of pressure sensors 7, and the pressure sensors 7 are used for acquiring real-time load pressure of the execution module 6.
The number of the pressure sensors 7 is 2-5.
And a constant pressure difference valve 8 is arranged in the valve group module 5, and the constant pressure difference valve 8 is used for reducing the load pressure.
And the valve group module 5 is connected with the execution module 6 through an oil way.
The model of the main control module 2 is STM32F 103.
The working principle of the hydraulic system is as follows: the electric proportional overflow valve 4 is integrated on the basis of the traditional remote constant pressure control pump, so that the constant pressure pump can work under any pressure between the LS set pressure and the PC set pressure, and the pressure value is determined by the current value of the electric proportional overflow valve 4. The maximum working pressure of each execution element in the execution module 6 is measured, then the maximum working pressure is converted into a current signal through the main control module 2 and then the current signal is transmitted to the electric control proportion constant pressure pump 3, so that the pump sets a constant pressure value according to the actual load when the execution elements act, redundant pressure loss and heating caused by a fixed maximum PC valve set value are avoided, and the purposes of reducing oil temperature rise and vehicle oil consumption are achieved.
When the electric proportional constant pressure pump is in actual use, the maximum working pressure of the normal work of an actuating element is measured through the pressure sensor 7 on the actuating module 6, when the actual load pressure is smaller than the maximum value set by the PC valve on the electric proportional constant pressure pump 3, a current is output to the electric proportional overflow valve 4 of the pump through the main control module, a corresponding constant pressure working value is set through the valve, and the value is only 20bar larger than the load pressure, so that the pressure loss and the heat generation of a loop of the actuating element are reduced to the maximum extent. When a plurality of executing elements perform composite actions, the main control module 2 sets the constant pressure working value of the electric control proportion constant pressure pump 3 according to the maximum load pressure. When the system is in a standby state, the main control module 2 does not output control current to the electric proportional overflow valve 4, and the electric proportional constant pressure pump 3 is in a low-voltage standby state.
On the setting module, the port B is an oil outlet, the port S is an oil suction port, LI and L2 are shell oil drainage ports, the port M2 is a system pressure measuring port, and the port X is a port LS.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (6)
1. The utility model provides an automatically controlled constant voltage hydraulic system is used to arm-type aerial working platform which characterized in that: the hydraulic control system comprises a setting module and a main control module, wherein the setting module is used for adjusting the output load pressure of a hydraulic system, the setting module comprises an electric control proportion constant pressure pump, an electric proportion overflow valve is arranged on the electric control proportion constant pressure pump, the output pressure of the electric control proportion constant pressure pump is set according to the current value of the electric proportion overflow valve, the main control module is electrically connected with the setting module, the main control module is used for transmitting an electric signal to the setting module, a valve group module and an execution module are sequentially connected onto the setting module, and the valve group module is used for establishing a shuttle valve network.
2. The system of claim 1, wherein: the execution module is provided with a plurality of pressure sensors, and the pressure sensors are used for acquiring the real-time load pressure of the execution module.
3. The system of claim 2, wherein: the number of the pressure sensors is 2-5.
4. The system of claim 1, wherein: and a constant pressure difference valve is arranged in the valve group module and used for reducing the load pressure.
5. The system of claim 1, wherein: the valve group module is connected with the execution module through an oil way.
6. The system of claim 1, wherein: the model of the main control module is STM32F 103.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873522.0U CN210065090U (en) | 2019-06-10 | 2019-06-10 | Arm-type high altitude construction platform is with automatically controlled constant voltage hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873522.0U CN210065090U (en) | 2019-06-10 | 2019-06-10 | Arm-type high altitude construction platform is with automatically controlled constant voltage hydraulic system |
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| Publication Number | Publication Date |
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| CN210065090U true CN210065090U (en) | 2020-02-14 |
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| CN201920873522.0U Active CN210065090U (en) | 2019-06-10 | 2019-06-10 | Arm-type high altitude construction platform is with automatically controlled constant voltage hydraulic system |
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Address after: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Patentee after: Lingong Heavy Machinery Co.,Ltd. Address before: 250101 no.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province Patentee before: LINGONG GROUP JINAN HEAVY MACHINERY Co.,Ltd. |