CN106829812B - Aerial work platform electric control system, electric control method and aerial work platform - Google Patents
Aerial work platform electric control system, electric control method and aerial work platform Download PDFInfo
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- CN106829812B CN106829812B CN201710013974.7A CN201710013974A CN106829812B CN 106829812 B CN106829812 B CN 106829812B CN 201710013974 A CN201710013974 A CN 201710013974A CN 106829812 B CN106829812 B CN 106829812B
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- 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
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
- B66F11/046—Working platforms suspended from booms of the telescoping type
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- 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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to an aerial work platform electric control system, an electric control method and an aerial work platform, wherein the electric control system comprises an aerial work platform control box (5) arranged on a platform (1), a rotary table control box (7) arranged on a rotary table (4) and a master control part, one of the aerial work platform control box (5) and the rotary table control box (7) can control all execution elements on the platform (1) and the rotary table (4) through the master control part, and the other aerial work platform control box can directly control part of the execution elements on the platform (1) and the rotary table (4). The electric control system adopts the master control part to carry out centralized control on all the execution elements, so that the signal transmission link can be reduced, the failure occurrence rate is reduced, the control reliability is improved, and the control cost is reduced; and part of the execution elements adopt redundant control, and when one control path fails, the other control path can be switched, so that the whole vehicle can reliably act, and the safety of operation is improved.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an aerial work platform electric control system, an aerial work platform electric control method and an aerial work platform.
Background
As shown in figure 1, the crank arm type aerial work platform is of an arm support structure consisting of a folding arm 3', a small arm 2 and a telescopic arm 3, can walk in a short distance between work sites or fields by utilizing self power, and is used for conveying workers and using equipment to a specified height for work. The operation control of the crank arm type aerial work platform is generally divided into platform control and turntable control, wherein the platform operation control is a main operation mode, and the turntable operation control is an auxiliary control mode.
As shown in fig. 2, an electric Control system adopted by a high-altitude operation platform in the prior art is that a platform controller 1a and a turntable controller 2a are respectively and correspondingly arranged on a platform 1 and a turntable 4, and the platform controller and the turntable controller communicate with each other through a CAN bus, and the controllers CAN be Electronic Control Units (ECUs). The platform controller 1a is mainly responsible for receiving an input signal of the work platform control box 4a as an auxiliary controller and transmitting the input signal to the turntable controller 2a. The turntable controller 2a is used as a main controller and is connected with the platform controller 1a, the turntable control box 5a and action executing elements 3a such as a proportional valve, a switch valve, a warning light and the like, so that the control function of the whole vehicle is realized. The operation platform control box 4a and the rotary table control box 5a are provided with control elements such as a handle, a switch and the like.
According to the scheme, the platform controller 1a and the rotary table controller 2a are respectively adopted to control the platform 1 and the rotary table 4 to act, and the two controllers are communicated through a CAN bus. In the working process of the crank arm type aerial work platform, once one of the platform controller 1a, the turntable controller 2a and the CAN bus fails, the whole vehicle does not act, and the reliability and safety of the whole vehicle work are affected.
Disclosure of Invention
The invention aims to provide an aerial work platform electric control system, an aerial work platform electric control method and an aerial work platform, which can improve the reliability of electric control when the aerial work platform acts.
In order to achieve the above object, a first aspect of the present invention provides an aerial work platform electric control system, which includes a work platform control box disposed on a platform, a turntable control box disposed on a turntable, and a master control component, wherein one of the work platform control box and the turntable control box can control all of the execution elements on the platform and the turntable through the master control component, and the other can directly control some of the execution elements on the platform and the turntable.
Furthermore, the general control part is a turntable control part, the turntable control part can receive input signals of the turntable control box and output control signals of all the executive elements on the platform and the turntable, and the operation platform control box can directly control the executive elements on the platform.
Furthermore, the general control part is a platform control part, the platform control part can receive input signals of the operation platform control box and output control signals to all the executive elements on the platform and the rotary table, and the rotary table control box can directly control the executive elements on the rotary table.
The general control part can also receive the detection signal of the detection part so as to adjust the control signals output to all the actuating elements on the platform and the rotary table.
Furthermore, the detection part comprises an inclination switch, a weighing switch, a boom state sensor and a turntable middle area detection switch.
And the display part is used for monitoring the working state of the master control part, recording the working state of the aerial work platform, alarming information, fault diagnosis and/or receiving a control signal of the master control part from the outside.
Further, the master control part is provided with a safety protection module which is used for realizing vehicle body inclination protection and overload protection.
Further, the boom amplitude, the turntable rotation, the whole vehicle running and the whole vehicle steering signals provided by the platform control component are analog quantity signals, the boom amplitude and the turntable rotation signals provided by the turntable control box are switching value signals, and the turntable control box is provided with an adjusting element for adjusting the amplitude of the electric signal provided by the turntable control box for the executing element on the turntable.
Furthermore, a power supply switching unit is arranged on the rotary table control box and used for realizing power supply switching of the platform and the rotary table so as to interlock the platform control and the rotary table control.
In order to achieve the above object, the second aspect of the present invention provides an aerial work platform, including the above-mentioned aerial work platform electric control system.
Furthermore, the aerial work platform is a crank arm type aerial work platform.
In order to achieve the above object, a third aspect of the present invention provides an electric control method for an aerial work platform, including:
one of the operation platform control box and the rotary table control box controls all executive elements on the platform and the rotary table through a master control part;
the other of the work platform control pod and the turntable control pod directly controls a portion of the actuators on the platform and turntable.
Further, the general control part is a turntable control part, and the aerial work platform electric control method comprises the following steps:
the turntable control part receives an input signal of the turntable control box and outputs control signals of all executive elements on the platform and the turntable;
the work platform control box directly controls the actuators on the platform.
Further, the general control part is a platform control part, and the aerial work platform electric control method comprises the following steps:
the platform control part receives an input signal of the operation platform control box and outputs control signals of all executive elements on the platform and the rotary table;
the turntable control box directly controls the executive component on the turntable.
Further, still include:
the detection component detects the current working state of the aerial work platform;
and the total control part receives the detection signal of the detection part so as to adjust the control signals output to all the execution elements on the platform and the rotary table.
Further, a power supply switching unit is arranged on the turntable control box, and the aerial work platform electric control method further comprises the following steps:
when the platform needs to be controlled, the power supply switching unit is switched to supply power to the platform;
and when the rotary table needs to be controlled, the power supply switching unit is switched to supply power to the rotary table.
Based on the technical scheme, the aerial work platform electric control system comprises a work platform control box, a rotary table control box and a master control part, wherein one of the work platform control box and the rotary table control box can control all execution elements on the platform and the rotary table through the master control part, and the other one of the work platform control box and the rotary table control box can directly control part of the execution elements on the platform and the rotary table. The electric control system adopts the master control part to carry out centralized control on all the execution elements, so that the signal transmission link can be reduced, the failure occurrence rate is reduced, the control reliability is improved, and the control cost is reduced; and part of the execution elements adopt redundant control, and when one control path fails, the other control path can be switched, so that the whole vehicle can reliably act, and the safety of operation is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of the external structure of a crank arm type aerial work platform;
FIG. 2 is a functional block diagram of an electrical control system of a prior art aerial work platform;
FIG. 3 is a functional block diagram of an embodiment of the aerial work platform electric control system of the present invention;
fig. 4 is a schematic diagram of port signal connection of an embodiment of a platform control component in the aerial work platform electric control system of the invention.
Description of the reference numerals
1a, a platform controller; 2a, a turntable controller; 3a, an actuator; 4a, a working platform control box; 5a, a rotary table control box; 1. a platform; 2. a small arm; 3. a telescopic arm; 3', folding arms; 4. a turntable; 5. an operation platform control box; 6. a detection section; 7. a turntable control box; 8. a platform control component; 9. and a display unit.
Detailed Description
The present invention is described in detail below. In the following paragraphs, the different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.
The terms "first", "second", and the like in the present invention are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.
In the description of the present invention, the terms "upper", "lower", "front", "rear", "inside" and "outside", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention, but do not necessarily indicate that the device has a specific orientation, is constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.
In order to overcome the problem of unreliable electric control system of the aerial work platform in the prior art and improve the reliability and safety of work, the invention provides an improved aerial work platform electric control system, which is shown in a combined manner in fig. 1 and 3 and comprises a work platform control box 5 arranged on the aerial work platform 1, a rotary table control box 7 arranged on a rotary table 4 and a master control part, wherein one of the work platform control box 5 and the rotary table control box 7 can control all executive elements on the work platform 1 and the rotary table 4 through the master control part, and the other can directly control part of the executive elements on the work platform 1 and the rotary table 4. Specifically, when the aerial work platform works, the main operation is completed through the control box connected with the master control part, and the other control box only performs the matching operation, so that the working safety of the aerial work platform is ensured.
The position of the master control part corresponds to the position of the control box capable of controlling all the execution elements in the working platform control box 5 and the rotary table control box 7, and the position corresponds to the position of the control box on the platform 1 or the position of the control box on the rotary table 4, but the specific arrangement position is not limited. The general control part can be a hardware controller composed of an ECU, a PLC, an integrated circuit or related parts.
The master control part integrates the operation platform controller 1a, the rotary table controller 2a and the CAN bus connected between the two in the prior art, and CAN perform centralized control on all execution elements, so that the signal transmission link CAN be reduced, the fault occurrence rate is reduced, the reliability of the high-altitude operation platform electric control system is improved, and the control cost is reduced. And part of the execution elements adopt redundant control, when one control path is in fault, the other control path can be switched, so that the reliable action of the whole vehicle can be ensured, and the safety of operation is improved.
In this embodiment "part of the actuators on the platform 1 and the turret 4" refers to the actuators corresponding to the positions of the work platform control box 5 and the turret control box 7. The actuating elements on the platform 1 and the rotary table 4 can comprise electromagnetic valves, warning lamps, buzzers and the like arranged on the platform 1 and the rotary table 4. The operation platform control box 5 and the rotary table control box 7 are provided with electric elements such as a handle, a switch and a button and are used for inputting required control signals to the executive elements on the platform 1 or the rotary table 4.
In a preferred embodiment, as shown in fig. 3, the general control part is a platform control part 8 disposed on the platform 1, the platform control part 8 can receive an input signal of the work platform control box 5 and output a control signal for all the execution elements on the platform 1 and the turntable 4, an operator can send out a control signal for all the execution elements on the platform 1 and the turntable 4 through the work platform control box 5, the turntable control box 7 can directly control the execution elements on the turntable 4, the work platform control box 5 can be controlled by the operator on the platform 1 to complete the main operation of the aerial work platform, and the turntable control box 7 can be controlled by a ground worker to perform a cooperation operation.
Specifically, when the aerial work platform works, an operator working on the platform 1 completes main operation through the work platform control box 5, and when the aerial work platform is inconvenient or incapable of operating on the platform 1 due to poor vision or platform operation faults and the like, ground workers can perform matching operation through the rotary table control box 7, so that the workers on the platform 1 can reach a designated position or fall to the ground in an emergency mode.
The turntable control box 7 controls the executing element on the turntable 4 through the turntable controller, and the executing element on the turntable 4 is mainly a hydraulic main valve in the form of an electromagnetic valve, and comprises a platform leveling electromagnetic valve, a platform rotation electromagnetic valve, an arm support telescopic electromagnetic valve, an arm support amplitude changing electromagnetic valve and the like, so that the turntable controller can be a relay arranged in the turntable control box 7 correspondingly, and the relay is controlled to act through a switching value control signal sent by the turntable control box 7 so as to control whether the hydraulic main valve is electrified or not. In this embodiment, the platform leveling solenoid valve, the platform rotation solenoid valve, the boom extension solenoid valve, and the boom amplitude solenoid valve can be controlled by the platform control unit 8, and can also be controlled by the turntable control box 7 directly.
Since both the turntable control box 7 and the platform control part 8 are capable of outputting control signals to the actuators on the turntable 4, and the turntable controller and the platform control part 8 are independent of each other, redundant control is formed for the actuators on the turntable 4. The control of the rotary table 4 mainly comprises left and right rotation of the platform, up and down leveling of the platform, amplitude variation of the arm support, extension of the arm support, left and right rotation of the rotary table and the like, and plays a very important role in the safety action of the aerial work platform, so that the reliability and safety of the control of the whole machine can be greatly improved by performing redundancy control on an actuating mechanism on the rotary table 4, and the control cost can be reduced. In addition, since the actuating mechanisms for controlling various actions on the rotary table 4 are all hydraulic main valves arranged on the rotary table 4, the actuating mechanisms on the rotary table 4 are directly controlled through the rotary table control box 7, the switching through an electric rotary body between a vehicle and a vehicle is not needed, the control difficulty is reduced, and the control reliability can be improved.
Alternatively, the general control part may be a turntable control part provided on the turntable 4, the turntable control part may receive an input signal of the turntable control box 7 and output a control signal to all the execution elements on the platform 1 and the turntable 4, the work platform control box 5 may directly control the execution elements on the platform 1, and an operator may send out a control signal to all the execution elements on the platform 1 and the turntable 4 through the turntable control box 7.
Preferably, a safety protection module can be arranged in the master control part and used for realizing vehicle body inclination protection and overload protection, so that the safety operation of the aerial work platform can be further guaranteed.
In order to adjust the control signal output by the main control part in real time according to the working condition of the aerial work platform, referring to fig. 3, the electric control system of the present invention may further include a detection part 6 for detecting the current working state of the aerial work platform, and the main control part may further receive the detection signal of the detection part 6 to adjust the control signal output to all the execution elements on the platform 1 and the turntable 4 according to the current working state of the entire vehicle. According to signals input by the control box and the detection part 6, the master control part outputs switching value or analog quantity signals through the logic operation of internal programs so as to realize the control of executing elements such as an electromagnetic valve, a warning light, a buzzer and the like.
For the embodiment shown in fig. 3 in which the overall control unit is the platform control unit 8, the detection signal of the detection unit 6 is received by the platform control unit 8. For the embodiment in which the overall control means is a turntable control means, the detection signal of the detection means 6 is received by the turntable control means.
The detecting part 6 may be various kinds of sensors or switches, etc. Preferably, according to the control requirement, the detection components 6 related to the electric control system of the aerial work platform of the present invention comprise a tilt switch, a weighing switch, a boom state sensor and a turntable middle area detection switch, and the detection components 6 are located on the turntable 4, the telescopic arm 3 and the folding arm 3'. The inclination switch is arranged on a base plate of the rotary table parallel to the horizontal plane and used for detecting the inclination state of the vehicle body. The tilt switch is a sensor with a signal processing function, can output a switching value signal, and can enable the master control part to output a control signal for adjusting the tilt angle of the vehicle body in time by switching when the vehicle body tilts beyond a preset angle (for example, 3 degrees). The weighing switch is arranged at the combined position of the platform 1 and the small arm 2 and used for detecting the load capacity of the platform 1, once the platform 1 is overloaded, the weighing switch can trigger the action, so that the master control part can output a signal for controlling the warning lamp and the buzzer to give an alarm, and an operator is reminded of the overload of the platform 1. The detection switch of the middle area of the rotary table is arranged at the lower part of the rotary table 4, when the platform 1 is positioned in the area right in front, the switch is closed, and when the area is exceeded, the switch is disconnected, so that the master control part outputs a signal for controlling the warning lamp and the buzzer to give an alarm, and an operator is assisted in judging the position of the platform 1. The arm support state detection switch comprises telescopic arm 3 in-position detection (located behind the telescopic arm 3) and folding arm 3 'amplitude detection (located at a front hinge point of the folding arm 3'), and the two switches are combined in series and used for judging whether the vehicle is in an operation state or not, so that the master control part outputs a signal for controlling the warning lamp and the buzzer to give an alarm, and an operator is informed that the vehicle cannot run if the vehicle is in the operation state.
Referring to fig. 3, further, the electric control system for aerial work platform of the present invention may further comprise a display unit 9, and when the main control unit is the platform control unit 8, the display unit 9 is disposed on the platform 1, such as a display. The display part 9 CAN realize information interaction with the master control part through a CAN bus and the like, and bidirectional signal transmission CAN be realized between the display part and the master control part.
The display part 9 may have at least one or more of the following functions:
(1) The monitoring device is used for monitoring the working state of the master control part or the aerial work platform, such as a control signal received by the master control part or a control signal sent to each execution element, namely the state information of each port of the master control part, and the current working condition and the signal transmission condition can be clearly and intuitively seen by monitoring the working state of the aerial work platform.
(2) The device is used for recording the working state and alarm information of the aerial work platform, for example: the working state information comprises the accumulated working time of the vehicle, the current action type and the amplitude; the alarm information comprises overload alarm information and vehicle body inclination alarm information.
(3) The display component 9 CAN realize fault diagnosis in a mode of displaying fault codes and fault descriptions, such as CAN bus communication faults, operating handle faults on a control box, faults of the detection component 6 and the like.
(4) The control system is used for receiving control signals of an external part to the master control part, the control signals are input through the operation platform control box 5 and the rotary table control box 7 in the electric control system, the display part 9 can be used as a man-machine interaction bridge, an operator can set parameter values of actions of the aerial operation platform through the display part 9, and adjustment of the running speed, the boom amplitude variation speed, the rotary table rotation speed and the engine rotation speed is achieved.
For the action of the whole vehicle, the control of the rotary table 4 mainly realizes the left-right rotation of the platform 1, the up-down leveling of the platform 1, the up-down amplitude variation of the small arm 2, the two-arm stretching, the up-down amplitude variation of the two arms, the up-down amplitude variation of the one arm and the left-right rotation of the rotary table 4, wherein the one arm is a folding arm 3', the two arms are telescopic arms 3, and the description of the one arm and the two arms is adopted to facilitate the description of the signal connection of each pin of the ECU in the figure 4. When these control signals are given through the turret control box 7, the actuator can receive the output signal of the switching value because the command input switch on the turret control box 7 is directly connected to the actuator on the turret 4.
When the high-altitude operation platform rotates the rotary table 4, the amplitude of the upper arm and the lower arm and the amplitude of the upper arm and the lower arm are changed, the requirement on the operation comfort level is high, and if the rotary table rotates too fast or the amplitude of the arm support is too fast, a panic feeling can be brought to an operator, and meanwhile, certain potential safety hazards also exist. Therefore, when these operations are executed, it is preferable to control the execution speed of the operations. For the embodiment that the master control part is the platform control part 8, the boom amplitude and the turntable rotation can be controlled by the platform control part 8 or directly by the turntable control box 7.
The control signal provided by the platform control component 8 is an analog signal, and the magnitude of the input signal can be directly changed by the operation of a handle on the operation platform control box 5 or the display component 9, so that the amplitude of the arm support and the rotation speed of the rotary table can be changed. The control signal provided by the turntable control box 7 is a switching value signal, when the switch on the turntable control box 7 is turned on, the control signal directly provides voltage for the actuating element, and in order to realize speed regulation, the turntable control box 7 can be provided with a regulating element for regulating the amplitude of the electric signal provided by the turntable control box 7 for the actuating element on the turntable 4. For example, the adjusting element is a slide rheostat, and the magnitude of voltage applied to an actuating element such as a solenoid valve can be adjusted by changing the resistance value, so that the opening degree of the solenoid valve is adjusted, and the control of the action speed is realized.
When the aerial work platform works, the platform 1 and the rotary table 4 preferably do not act simultaneously from the viewpoint of ensuring safety. In order to fulfill such a requirement, a power switching unit, such as a key switch, may be provided on the turntable control box 7 for switching the power of the platform 1 and the turntable 4, so that the platform control and the turntable control are interlocked in hardware.
For the electric control system of the aerial work platform shown in fig. 3, fig. 4 shows the input and output signals of each port when the platform control part 8 is an ECU. The left side is an input signal, wherein DI is switching value input, AI is analog value input, and PI is frequency value input; and various output signals are arranged on the right side, wherein PWM is an electro-hydraulic proportional solenoid valve control signal, DO is a digital output signal, and the platform control part 8 controls all execution elements on the platform 1 and the rotary table 4 through a PWM output port and a DO output port.
The DI signal includes: the second arm extension, the second arm contraction, the upper platform leveling, the lower platform leveling, the left platform turning, the right platform turning, the upper small arm amplitude variation and the lower small arm amplitude variation which can provide signal input control through the operation platform control box 5 and the rotary table control box 7; the foot switch, the running enable and the high and low speed control of input control are carried out through the operation platform control box 5; the detection component 6 is a dip angle switch, a turntable middle area detection switch, a weighing switch, an arm support state detection switch and the like, and the detection component 6 inputs signals. The AI signals include: the amplitude of one arm is changed through the X-axis displacement of the first handle, the amplitude of the two arms is changed through the X-axis displacement of the second handle, the rotation of the rotary table is realized through the Y-axis displacement of the second handle, the running of the whole vehicle is realized through the X-axis displacement of the third handle, and the steering of the whole vehicle is realized through the Y-axis displacement of the third handle. The PI signal includes: an engine speed control signal. Here, as for the AI signal, if the actuator is controlled by the stage control part 8, an analog signal is inputted, and if the turntable actuator is directly controlled by the turntable control box 7, a switching value signal is inputted.
The DO output signal is used to control the following actuators: the system comprises a running enable indicator lamp, an overload indicator lamp, a buzzer, an engine starting protection relay, a platform overload protection relay, a platform up-regulation solenoid valve, a platform down-regulation solenoid valve, a two-arm extension solenoid valve, a two-arm contraction solenoid valve, a platform left-turn/small-arm up-amplitude solenoid valve, a platform right-turn/small-arm down-amplitude solenoid valve, a high-low speed valve and a brake valve. The PWM output signal is used to control the following actuators: an upper-arm amplitude-variable electromagnetic valve, a lower-arm amplitude-variable electromagnetic valve, a left rotary electromagnetic valve and a right rotary electromagnetic valve which are positioned on the rotary table 4.
For the setting positions of each executing element, an overload indicating lamp and a buzzer are arranged on the platform 1 and the rotary table 4, the driving enabling indicating lamp, the platform left-turn/small-arm upper amplitude-variable electromagnetic valve and the platform right-turn/small-arm lower amplitude-variable electromagnetic valve are positioned on the platform 1, and the rest executing elements are arranged on the rotary table 4.
Secondly, the invention provides an aerial work platform, which comprises the aerial work platform electric control system of the embodiment, and the aerial work platform provided with the platform 1 and the rotary table 4 is within the protection scope of the invention. Because the electric control system can adopt the master control part to carry out centralized control on all the execution elements so as to reduce the failure occurrence rate, and adopts redundant control on the execution elements so as to improve the control reliability, the advantages can ensure the reliability and the safety of the aerial work platform when carrying out the work.
Preferably, the aerial work platform is a crank arm aerial work platform. The arm support of the crank arm type aerial work platform consists of a plurality of arm sections, the action is complex, in order to control the action of each arm section, a plurality of control signals need to be sent out, and when the aerial work platform electric control system is applied, the complexity of the whole electric control system can be particularly reduced, and the control reliability is improved.
In addition, the invention also provides an aerial working platform electric control method which can be based on the embodiments of the aerial working platform electric control systems, and the technical characteristics and the technical effects mentioned in the electric control systems can be used for reference. In one exemplary embodiment, the method of electronically controlling includes the steps of:
step 101, one of the operation platform control box 5 and the rotary table control box 7 controls all executive elements on the platform 1 and the rotary table 4 through a master control part;
the other of the work platform control box 5 and the turret control box 7 directly controls part of the actuators on the platform 1 and turret 4, step 102.
And step 101 and step 102 select a proper control path according to requirements during execution, and the restriction of the sequence is avoided.
In a preferred embodiment, as shown in fig. 3, the general control unit is a platform control unit 8, and the aerial work platform electric control method includes:
step 101A, a platform control part 8 receives an input signal of a work platform control box 5 and outputs control signals of all execution elements on a platform 1 and a rotary table 4;
step 102A, the turntable control box 7 directly controls the actuator on the turntable 4.
The electric control method realizes the redundancy function by controlling the centralized control of the upper vehicle by the control part and the decentralized control of the lower vehicle, and the two are not influenced mutually.
In an alternative embodiment, the general control part is a turntable control part, and the aerial work platform electric control method comprises the following steps:
step 101B, the turntable control part receives an input signal of the turntable control box 7 and outputs control signals for all executive elements on the platform 1 and the turntable 4;
step 102B, the work platform control box 5 directly controls the execution elements on the platform 1.
On this basis, referring to fig. 3, the aerial work platform electric control system may further include a detection component 6, and accordingly, the electric control method of the present invention may further include:
103, detecting the current working state of the aerial work platform by the detection component 6;
and step 104, the total control part receives the detection signal of the detection part 6 so as to adjust the control signals output to all the executive elements on the platform 1 and the rotary table 4.
In order to ensure that the platform 1 and the rotary table 4 can not act simultaneously when the aerial work platform works, a power supply switching unit is arranged on the rotary table control box 7, and the aerial work platform electric control method further comprises the following steps:
when the platform 1 needs to be controlled, the power supply switching unit is switched to supply power to the platform 1; when the turntable 4 needs to be controlled, the power supply switching unit is switched to supply power to the turntable 4.
Various embodiments of the present invention have been described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to aid in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (16)
1. The utility model provides an aerial working platform electric control system, its characterized in that, including establishing operation platform control box (5) on platform (1), establishing revolving stage control box (7) and the total control part on revolving stage (4), one in operation platform control box (5) and revolving stage control box (7) can pass through total control part control all executive component on platform (1) and revolving stage (4), another can direct control part executive component on platform (1) and revolving stage (4).
2. The aerial work platform electric control system of claim 1, characterized in that the general control part is a turntable control part, the turntable control part can receive input signals of the turntable control box (7) and output control signals for all the actuators on the platform (1) and the turntable (4), and the work platform control box (5) can directly control the actuators on the platform (1).
3. The aerial work platform electric control system of claim 1, characterized in that the general control part is a platform control part (8), the platform control part (8) can receive input signals of the work platform control box (5) and output control signals for all the actuators on the platform (1) and the turntable (4), and the turntable control box (7) can directly control the actuators on the turntable (4).
4. An electric control system for an aerial work platform according to any one of claims 1 to 3, further comprising a detection unit (6) for detecting the current working state of the aerial work platform, and the general control unit is further capable of receiving detection signals from the detection unit (6) to adjust control signals output to all actuators on the platform (1) and the turntable (4).
5. The aerial work platform electrical control system of claim 4, wherein the detection component (6) comprises a tilt switch, a weigh switch, a boom condition sensor and a turntable mid-zone detection switch.
6. The aerial work platform electric control system according to any one of claims 1 to 3, further comprising a display unit (9) for monitoring the working state of the master control unit, recording the working state of the aerial work platform, alarming information, fault diagnosis and/or receiving control signals externally applied to the master control unit.
7. An aerial work platform electric control system as claimed in any one of claims 1 to 3, wherein the general control part is provided with a safety protection module, and the safety protection module is used for realizing vehicle body inclination protection and overload protection.
8. The aerial work platform electric control system according to claim 3, characterized in that the boom amplitude, turntable rotation, vehicle running and whole vehicle steering signals provided by the platform control component (8) are analog signals, the boom amplitude and turntable rotation signals provided by the turntable control box (7) are switching value signals, and the turntable control box (7) is provided with an adjusting element for adjusting the amplitude of an electric signal provided by the turntable control box (7) to an actuating element on the turntable (4).
9. The aerial work platform electric control system according to claim 3, characterized in that a power switching unit is arranged on the turntable control box (7) and used for realizing power switching of the platform (1) and the turntable (4) so as to interlock platform control and turntable control.
10. An aerial work platform comprising an aerial work platform electrical control system as claimed in any one of claims 1 to 9.
11. The aerial work platform of claim 10 wherein the aerial work platform is a crank arm aerial work platform.
12. An electric control method for an aerial work platform is characterized by comprising the following steps:
one of the operation platform control box (5) and the rotary table control box (7) controls all the executive elements on the platform (1) and the rotary table (4) through a master control part;
the other of the work platform control box (5) and the rotary table control box (7) directly controls part of the execution elements on the platform (1) and the rotary table (4).
13. The aerial work platform electrical control method of claim 12, wherein the master control component is a turntable control component, and the aerial work platform electrical control method comprises:
the turntable control part receives an input signal of the turntable control box (7) and outputs control signals of all executive elements on the platform (1) and the turntable (4);
the operation platform control box (5) directly controls the execution element on the platform (1).
14. The method of claim 12, wherein the general control unit is a platform control unit (8), and the method comprises:
the platform control part (8) receives an input signal of the operation platform control box (5) and outputs control signals of all execution elements on the platform (1) and the rotary table (4);
the rotary table control box (7) directly controls an actuating element on the rotary table (4).
15. The method of claim 12, further comprising:
the detection component (6) detects the current working state of the aerial work platform;
the total control part receives the detection signal of the detection part (6) to adjust the control signals output to all the execution elements on the platform (1) and the rotary table (4).
16. The electrical control method for the aerial work platform according to claim 14, wherein the turntable control box (7) is provided with a power switching unit, and the electrical control method for the aerial work platform further comprises the following steps:
when the platform (1) needs to be controlled, the power supply switching unit is switched to supply power to the platform (1);
and when the turntable (4) needs to be controlled, the power supply switching unit is switched to supply power to the turntable (4).
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| CN107235454B (en) * | 2017-07-25 | 2022-08-30 | 徐州海伦哲专用车辆股份有限公司 | Communication device and communication method for insulating arm high-altitude operation vehicle |
| CN108083188B (en) * | 2017-12-14 | 2023-07-28 | 江苏徐工国重实验室科技有限公司 | Boom control device and method, aerial work platform and computer readable storage medium |
| CN109107795A (en) * | 2018-08-07 | 2019-01-01 | 叶小芽 | A kind of spray gun of the jetting machine convenient for adjusting |
| CN113184772B (en) * | 2021-05-28 | 2022-06-07 | 江苏徐工工程机械研究院有限公司 | Straight arm type aerial work platform control system and control method |
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