CN113685397B - Hydraulic control system applied to 10kV live working platform - Google Patents
Hydraulic control system applied to 10kV live working platform Download PDFInfo
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- CN113685397B CN113685397B CN202110983289.3A CN202110983289A CN113685397B CN 113685397 B CN113685397 B CN 113685397B CN 202110983289 A CN202110983289 A CN 202110983289A CN 113685397 B CN113685397 B CN 113685397B
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- 230000003321 amplification Effects 0.000 claims abstract description 58
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims description 52
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 230000007704 transition Effects 0.000 claims description 16
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000012937 correction Methods 0.000 claims description 9
- 230000000875 corresponding effect Effects 0.000 claims description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 6
- 230000005684 electric field Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000012876 topography Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- 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
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Abstract
The invention discloses a hydraulic control system applied to a 10kV live working platform, which relates to the technical field of electric power and comprises the following components: instruction and amplification device: generation, input and amplification of control signals, electro-mechanical converter: the control signal is converted or displaced into an equivalent mechanical control signal. This be applied to 10kV live working platform's hydraulic control system, through the use of hydraulic power source, can make equipment possess two kinds of different power take off modes simultaneously, further improve the quiet, dynamic characteristics of system, make the removal of equipment satisfy adaptation farmland, rugged mountain road, narrow and small passageway etc. complicated topography environment, guaranteed the complex environment working capacity of equipment, effectively support and join in marriage net field operation demand, detect feedback device through the inner ring and detect feedback device's combination use with the outer loop, make the performance and the control accuracy of entire system all relatively improve, guarantee the aerial work insulation safety of staff under the strong electric field environment.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a hydraulic control system applied to a 10kV live working platform.
Background
Along with the further development of society, people also have higher and higher requirements on power supply quality, in people's work and life, electric power has played important effect, once electric power stops working, will bring serious problem to people's life and production, just put forward live working to this problem, live working can effectively reduce the power failure time, and live working will become a normal operation mode and replace the power failure operation gradually, simultaneously, join in marriage net live working belongs to high altitude, high risk, high strength work again.
The insulating bearing tool that current is commonly used mainly has insulating arm car, insulating arm car itself has the characteristics that the security is high, the operating efficiency is high, the operation project is many, but insulating arm car is wheeled chassis structure generally, the volume is great, and 10kV distribution lines are located remote mountain areas more, current insulating arm car can't adapt to the uneven rugged road surface of topography different, height, design and development can carry the high altitude live working platform that conveniently adapts to complicated road conditions and narrow and small space and easy and simple to handle, the operating personnel can accomplish functions such as lift, flexible through the automatic operation of platform, the high altitude live working is realized safely.
Disclosure of Invention
The invention aims to provide a hydraulic control system applied to a 10kV live working platform, which solves the problems in the background technology.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a hydraulic control system for a 10kV live working platform, comprising:
instruction and amplification device: generating, inputting and amplifying control signals;
electro-mechanical converter: converting or displacing the control signal into an equal mechanical quantity control signal;
and a hydraulic power source: providing a constant pressure oil source or constant flow oil source for the device;
hydraulic conversion and amplification device: converting the received signal and amplifying the power at the same time;
hydraulic actuator: the output device of the system executes the obtained signal;
control object: receiving the sent signal and making corresponding action to complete the instruction;
an inner ring detection feedback device: detecting the actual value of the controlled quantity or the intermediate variable to obtain a feedback signal of the system;
an outer ring detection feedback device: and detecting output quantity, which is used for improving the performance and control precision of the whole system.
The hydraulic power source comprises a positive displacement hydraulic pump module, an overflow valve module, an energy accumulator module and a safety valve module, wherein the overflow valve module, the energy accumulator module and the safety valve module are connected with the positive displacement hydraulic pump module through bidirectional signals, and the inner ring detection feedback device is connected with the outer ring detection feedback device through bidirectional signals.
Further, the hydraulic execution device comprises a signal transition module, a load detection module and a power output module, wherein the load detection module, the power output module and the signal transition module are connected through bidirectional signals.
Further, the instruction and amplification device comprises a signal generation input module, an electronic amplification correction module and an electrohydraulic proportional control module, wherein the electronic amplification correction module and the electrohydraulic proportional control module are in bidirectional signal connection with the signal generation input module.
Further, the output end of the signal generating input module in the command and amplifying device is in signal connection with the input end of the electromechanical converter, and the output end of the electromechanical converter is electrically fed back to a feedback element between the command and amplifying device and the electromechanical converter.
Further, the output end of the electro-mechanical converter is in signal connection with the input end of the hydraulic conversion and amplification device, and the output end of the positive displacement hydraulic pump module in the hydraulic power source is in signal connection with the input end of the hydraulic conversion and amplification device.
Further, the output end of the hydraulic conversion and amplification device is in signal connection with the input end of a signal transition module in the hydraulic execution device, and the output end of the signal transition module in the hydraulic execution device is in signal connection with the input end of the control object.
Further, mechanical hydraulic feedback is generated between the hydraulic conversion and amplification device and the inner ring detection feedback device.
Further, the output end of the hydraulic conversion and amplification device is in signal connection with the input end of the inner ring detection feedback device, and the output end of the inner ring detection feedback device is in signal connection with a feedback element between the electro-mechanical converter and the hydraulic conversion and amplification device.
Further, the output end of the hydraulic conversion and amplification device is in signal connection with the input end of the outer ring detection feedback device, and the output end of the signal transition module in the hydraulic execution device is in signal connection with the input end of the outer ring detection feedback device.
Further, the output end of the control object is in signal connection with the input end of the outer ring detection feedback device, and the output end of the outer ring detection feedback device is in telecommunication connection with a feedback element between the instruction and amplifying device and the electro-mechanical converter.
The invention provides a hydraulic control system applied to a 10kV live working platform. The beneficial effects are as follows:
(1) The hydraulic control system applied to the 10kV live working platform can enable equipment to have two different power output modes simultaneously through the use of a hydraulic power source, further improve the static and dynamic characteristics of the system, enable the movement of the equipment to meet the requirements of adapting to complex terrain environments such as farmlands, rugged mountain roads, narrow channels and the like, ensure the working capacity of the complex environment of the equipment and effectively support the field operation requirements of a distribution network.
(2) The hydraulic control system applied to the 10kV live working platform ensures that the performance and the control precision of the whole system are relatively improved through the combined use of the inner ring detection feedback device and the outer ring detection feedback device, and ensures the insulation safety of high-altitude operation of staff in a strong electric field environment.
(3) The hydraulic control system applied to the 10kV live working platform acquires an objective function of a stability coefficient of the aerial working platform by establishing a platform automatic balance model based on a moment method, and solves the self-leveling problem of a self-propelled walking system in the walking process under a complex road environment by adopting an inclination angle high-speed acquisition technology and a precompensation technology.
Drawings
FIG. 1 is a general system diagram of a hydraulic control system for a 10kV live working platform according to the present invention;
FIG. 2 is a schematic diagram of a hydraulic power source of a hydraulic control system for a 10kV live working platform according to the present invention;
FIG. 3 is a schematic diagram of a hydraulic actuator of a hydraulic control system for a 10kV live working platform according to the present invention;
fig. 4 is a schematic diagram of a command and amplification device of a hydraulic control system applied to a 10kV live working platform according to the present invention.
In the figure: 1. a command and amplification device; 2. an electromechanical transducer; 3. a hydraulic power source; 4. a hydraulic conversion and amplification device; 5. a hydraulic actuator; 6. a control object; 7. an inner ring detection feedback device; 8. and the outer ring detects a feedback device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-4, the present invention provides a technical solution: a hydraulic control system for a 10kV live working platform, comprising:
instruction and amplification device 1: generating, inputting and amplifying control signals;
electromechanical transducer 2: converting or displacing the control signal into an equal mechanical quantity control signal;
hydraulic power source 3: providing a constant pressure oil source or constant flow oil source for the device;
hydraulic conversion and amplification device 4: converting the received signal and amplifying the power at the same time;
hydraulic actuator 5: the output device of the system executes the obtained signal;
control object 6: receiving the sent signal and making corresponding action to complete the instruction;
an inner ring detection feedback device 7: detecting the actual value of the controlled quantity or the intermediate variable to obtain a feedback signal of the system;
an outer ring detection feedback device 8: and detecting output quantity, which is used for improving the performance and control precision of the whole system.
The hydraulic power source 3 comprises a positive displacement hydraulic pump module, an overflow valve module, an energy accumulator module and a safety valve module, wherein the overflow valve module, the energy accumulator module and the safety valve module are connected with the positive displacement hydraulic pump module by bidirectional signals, the inner ring detection feedback device 7 is connected with the outer ring detection feedback device 8 by bidirectional signals, the power of the hydraulic power source 3 can be divided into two types, one type of constant pressure oil source consists of the positive displacement hydraulic pump module, the overflow valve module and the energy accumulator module, the other type of constant flow oil source consists of the positive displacement hydraulic pump module, the overflow valve module and the safety valve module, in an electrohydraulic proportional control system, a hydraulic element (proportional valve), an executing device and a control object 6 are closely connected, and are often combined into a hydraulic device for the convenience of system modeling and dynamic analysis to become a hydraulic power mechanism, various correction devices are added in the system for further improving the static and dynamic characteristics of the system, the detection element is often a signal converter for meeting the comparison requirements.
Specifically, the hydraulic execution device 5 includes a signal transition module, a load detection module and a power output module, wherein the load detection module, the power output module and the signal transition module are connected by bidirectional signals, usually a hydraulic cylinder or a hydraulic motor, and output parameters of the hydraulic execution device are displacement, speed, acceleration, force or rotation angle, angular speed, angular acceleration and torque, wherein the signal transition module deletes and executes received signals, the load detection module detects the load condition of the controlled position, the safety is ensured, and the power output module directly performs power output and activity control.
Specifically, the instruction and amplification device 1 includes a signal generating input module, an electronic amplification correction module and an electro-hydraulic proportional control module, the electronic amplification correction module and the electro-hydraulic proportional control module are connected with the signal generating input module through bidirectional signals, the instruction and amplification device 1 can also be called a programmer or an input circuit, under the condition that feedback signals exist, the instruction and amplification device 1 gives out control signals with the same form and magnitude as the feedback signals, the instruction and amplification device can also be a signal generating device or a program controller, the instruction signals can be manually set or programmed, most commonly, are manually preset, program gating is used during operation, the signal generating input module generates and sends out signals, the electronic amplification correction module performs amplification adjustment to ensure that the signals are normal, and the electro-hydraulic proportional control module includes a proportional valve, an electro-hydraulic proportional variable pump and a variable motor including a mechanical converter to perform corresponding proportional control.
Specifically, the output end of the signal generating input module in the command and amplifying device 1 is in signal connection with the input end of the electro-mechanical converter 2, the output end of the electro-mechanical converter 2 is electrically fed back to a feedback element between the command and amplifying device 1 and the electro-mechanical converter 2, the electro-mechanical converter 2 is an electrohydraulic interface element, generally a moving iron type electromagnetic device, and converts a control signal into a mechanical quantity control signal such as a (moment) or a displacement (rotation angle), for example, a proportional electromagnet and the like, and the command signal generated by the command and amplifying device 1 is transmitted to the electro-mechanical converter 2 to perform conversion between different signal types to form a corresponding identifiable signal, and simultaneously generates feedback, and the feedback quantity is also converted into the same type of electric quantity.
Specifically, the output end of the electro-mechanical converter 2 is in signal connection with the input end of the hydraulic conversion and amplification device 4, the output end of the positive displacement hydraulic pump module in the hydraulic power source 3 is in signal connection with the input end of the hydraulic conversion and amplification device 4, the electro-mechanical converter 2 transmits the converted signal to the hydraulic conversion and amplification device 4 for signal amplification, the hydraulic conversion and amplification device 4 can be various switch-type, servo-type and proportional devices, and is actually a power amplification unit, and the hydraulic power source 3 provides corresponding power output for the hydraulic conversion and amplification device 4.
Specifically, the output end of the hydraulic conversion and amplification device 4 is in signal connection with the input end of a signal transition module in the hydraulic execution device 5, the output end of the signal transition module in the hydraulic execution device 5 is in signal connection with the input end of the control object 6, the signal amplified by the hydraulic conversion and amplification device 4 is transmitted to the hydraulic execution device 5 for signal execution, and the hydraulic execution device 5 controls the control object 6 to make corresponding activity effects according to the received signal.
Specifically, mechanical hydraulic feedback is generated between the hydraulic conversion and amplification device 4 and the inner ring detection feedback device 7, deviation signals are obtained by comparing input signals and feedback signals between the hydraulic conversion and amplification device 4 and the inner ring detection feedback device 7, and mechanical hydraulic feedback is generated according to the deviation signals.
Specifically, the output end of the hydraulic conversion and amplification device 4 is in signal connection with the input end of the inner ring detection feedback device 7, the output end of the inner ring detection feedback device 7 is in signal connection with a feedback element between the electro-mechanical converter 2 and the hydraulic conversion and amplification device 4, and the inner ring detection feedback device 7 detects, compares and feeds back the output signal of the hydraulic conversion and amplification device 4.
Specifically, the output end of the hydraulic conversion and amplification device 4 is in signal connection with the input end of the outer ring detection feedback device 8, the output end of the signal transition module in the hydraulic execution device 5 is in signal connection with the input end of the outer ring detection feedback device 8, and the hydraulic conversion and amplification device 4 and the hydraulic execution device 5 are both connected with the outer ring detection feedback device 8 for further detection, so that data are more accurate.
Specifically, the output end of the control object 6 is in signal connection with the input end of the outer ring detection feedback device 8, the output end of the outer ring detection feedback device 8 is in telecommunication connection with the feedback element between the instruction and amplifying device 1 and the electro-mechanical converter 2, the control object 6 is connected with the outer ring detection feedback device 8 to be at a higher temperature, and meanwhile, the signal of the outer ring detection feedback device 8 is fed back.
When the intelligent control system is used, a signal generation and input module in the command and amplification device generates a signal source, the signal source is amplified and corrected through the electronic amplification and correction module and transmitted to the electro-mechanical converter 2, the electro-mechanical converter 2 converts a received signal to enable the signal to be correspondingly received, meanwhile, the hydraulic power source 3 provides corresponding power output for the hydraulic conversion and amplification device 4, the hydraulic conversion and amplification device 4 transmits the converted and amplified signal to the hydraulic execution device 5, the hydraulic execution device 5 realizes power output according to a load so as to control the control object 6, in the process of signal transmission and control, the inner ring detection feedback device 7 compares the temperature of the received signal, the information is fed back, in the process of detecting the inner ring detection feedback device 7, and the data is relatively improved through the outer ring detection feedback device 8, so that the performance and control accuracy of the whole system are ensured, and the safety of personnel is ensured.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the present invention.
Claims (1)
1. Be applied to 10kV live working platform's hydraulic control system, characterized by comprising:
instruction and amplifying device (1): generating, inputting and amplifying control signals;
electro-mechanical converter (2): converting or displacing the control signal into an equal mechanical quantity control signal;
hydraulic power source (3): providing a constant pressure oil source or constant flow oil source for the device;
hydraulic conversion and amplification device (4): converting the received signal and amplifying the power at the same time;
hydraulic actuator (5): the output device of the system executes the obtained signal;
control object (6): receiving the sent signal and making corresponding action to complete the instruction;
an inner ring detection feedback device (7): detecting the actual value of the controlled quantity or the intermediate variable to obtain a feedback signal of the system;
outer loop detection feedback device (8): detecting output quantity, which is used for improving the performance and control precision of the whole system;
the hydraulic power source (3) comprises a positive displacement hydraulic pump module, an overflow valve module, an energy accumulator module and a safety valve module, wherein the overflow valve module, the energy accumulator module and the safety valve module are connected with the positive displacement hydraulic pump module through bidirectional signals, the inner ring detection feedback device (7) is connected with the outer ring detection feedback device (8) through bidirectional signals, the hydraulic execution device (5) comprises a signal transition module, a load detection module and a power output module, the load detection module and the power output module are connected with the signal transition module through bidirectional signals, the command and amplification device (1) comprises a signal generation input module, an electronic amplification correction module and an electrohydraulic proportional control module, the electronic amplification correction module and the electrohydraulic proportional control module are connected with the signal generation input module through bidirectional signals, the output end of the signal generation input module in the command and amplification device (1) is connected with the input end of the electro-mechanical converter (2), the output end of the electro-mechanical converter (2) is electrically fed back to the feedback element between the command and amplification device (1) and the electro-mechanical converter (2), the output end of the electro-mechanical converter (2) is connected with the hydraulic power source (4) through the hydraulic power source (4), the output end of the hydraulic conversion and amplification device (4) is in signal connection with the input end of a signal transition module in the hydraulic execution device (5), the output end of the signal transition module in the hydraulic execution device (5) is in signal connection with the input end of a control object (6), mechanical hydraulic feedback is generated between the hydraulic conversion and amplification device (4) and an inner ring detection feedback device (7), the output end of the hydraulic conversion and amplification device (4) is in signal connection with the input end of the inner ring detection feedback device (7), the output end of the inner ring detection feedback device (7) is in signal connection with a feedback element between an electro-mechanical converter (2) and the hydraulic conversion and amplification device (4), the output end of the hydraulic conversion and amplification device (4) is in signal connection with the input end of an outer ring detection feedback device (8), the output end of the signal transition module in the hydraulic execution device (5) is in signal connection with the input end of the outer ring detection feedback device (8), the output end of the control object (6) is in signal connection with the input end of the outer ring detection feedback device (8), and the feedback element (1) is in signal connection with the output end of the electric feedback device (8) and the electric feedback device (2).
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| CN202110983289.3A CN113685397B (en) | 2021-08-25 | 2021-08-25 | Hydraulic control system applied to 10kV live working platform |
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| CN202110983289.3A CN113685397B (en) | 2021-08-25 | 2021-08-25 | Hydraulic control system applied to 10kV live working platform |
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| CN113685397B true CN113685397B (en) | 2023-11-17 |
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