A hydraulic control system for a U-shaped dump truck box assembly tooling

Abstract

The invention discloses a hydraulic control system for a U-shaped structure dump truck box body closing tooling, and specifically relates to the technical field of dump trucks. The invention adopts a pressure detection unit, a current sensor, a simulation module, a modeling unit, a simulation result analysis module and a circuit breaking execution unit, and then analyzes and judges the simulation model to determine whether its data has an abnormal situation or an abnormal development trend of the data. When an abnormal situation occurs in the hydraulic control system, the processor controls other mechanical equipment to stop working at the same time through the circuit breaking execution unit, and controls the hydraulic power unit to stop working through the stop instruction in the instruction pool unit, which can ensure to a certain extent that when an abnormal situation occurs in the device, the problem is discovered in time, and other equipment for closing operation is controlled to stop working synchronously, and the problem of performing processing operation before the side plate is supported is not easy to occur. The overall linkage of the closing operation is relatively ideal, and has good safety performance.

Description

Technical Field

[0001] The invention relates to the technical field of dump trucks, and more specifically to a hydraulic control system for a box assembly tooling of a U-shaped dump truck. Background Art

[0002] A dump truck is a vehicle that unloads goods by itself through hydraulic or mechanical lifting, also known as a dump truck. It consists of a vehicle chassis, a hydraulic lifting mechanism, a cargo compartment, and a power take-off device.

[0003] The hydraulic control system is powered by an electric motor, and uses a hydraulic pump to convert mechanical energy into pressure to push the hydraulic oil. By controlling various valves to change the flow direction of the hydraulic oil, the hydraulic cylinder is pushed to perform actions of different strokes and directions to meet the different action requirements of various equipment.

[0004] The hydraulic servo control system is a feedback control system composed of hydraulic power elements as driving devices. In this system, the output (displacement, speed, force, etc.) can automatically, quickly and accurately reproduce the changing law of the input. At the same time, the input signal is also amplified, so it is also a power amplifier.

[0005] The hydraulic pump is the energy source of the system. It supplies oil to the system at a constant pressure. The oil supply pressure is adjusted by the overflow valve. The hydraulic power element consists of a four-sided slide valve and a hydraulic cylinder. The slide valve is a conversion and amplification element. It converts the input mechanical signal (valve core displacement) into a hydraulic signal (flow, pressure) output and amplifies the power. The hydraulic cylinder is an actuator. The input is the flow of pressure oil and the output is the movement speed (or displacement). The slide valve body is rigidly connected to the hydraulic cylinder body to form a feedback loop. Therefore, this is a closed-loop control system.

[0006] Open-loop hydraulic control and closed-loop hydraulic control are two basic control methods of hydraulic control.

[0007] Among them, hydraulic closed-loop control systems often have multiple classification methods.

[0008] (1) Classification according to the tasks completed by the control system:

[0009] According to the type of tasks completed by the control system, the hydraulic control system can be divided into hydraulic servo control system (abbreviated as hydraulic servo system) and hydraulic regulation control system.

[0010] (2) Classification according to the linearity of each component of the control system:

[0011] According to whether the control system contains nonlinear components, hydraulic control systems can be divided into linear systems and nonlinear systems.

[0012] (3) Classification according to the continuity of control signals in each component of the control system:

[0013] According to whether the control signals in the control system are continuous signals, the hydraulic control system can be divided into continuous system and discrete system.

[0014] (4) Classification by controlled physical quantity:

[0015] According to the different controlled physical quantities, hydraulic feedback control systems can be divided into position control systems, speed control systems, force control systems and other physical quantity control systems.

[0016] (5) Classification by hydraulic control elements or control methods:

[0017] According to the type of hydraulic control element or control method, the hydraulic feedback control system can be divided into valve control system (throttling control method) and pump control system (volume control method). Further classified according to the hydraulic actuator, the valve control system can be divided into valve control hydraulic cylinder system and valve control hydraulic motor system; the pump control system can be divided into pump control hydraulic cylinder system and pump control hydraulic motor system.

[0018] (6) Classification by signal transmission medium:

[0019] According to the different control signal transmission media, hydraulic control systems can be divided into mechanical hydraulic control systems (abbreviated as mechanical-hydraulic servo systems or mechanical-hydraulic servo mechanisms), electrical hydraulic control systems, etc.

[0020] The dump truck compartment needs to be assembled during the processing. Assembly means positioning and supporting multiple side panels and then welding them into a whole. The operation requires the use of tooling to position and support the side panels. Although the hydraulic control system used in the existing tooling can achieve the purpose of precise control, if there is leakage or blockage in some parts of the hydraulic system, it may cause unstable hydraulic power output and even affect the positioning effect of the tooling on the side panels. At the same time, the hydraulic control system cannot work normally due to problems, and other components involved in the welding process may operate normally. Therefore, when the side panels cannot complete the positioning and support, welding or other operations may be performed on them, resulting in the hydraulic control system and other mechanical components The connection is not close enough, and the linkage effect cannot be achieved. In addition, the cause and fault point of the hydraulic control system cannot be accurately and quickly located and solved, and there may be certain safety hazards. Therefore, a U-shaped structure dump truck compartment assembly tooling hydraulic control system is needed to solve the above problems. Summary of the invention

[0021] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hydraulic control system for a U-shaped structure dump truck box assembly tooling. The technical problem to be solved by the present invention is: when the hydraulic control system has a problem and cannot work normally, other components involved in the welding process may operate normally. Therefore, when the side panels cannot complete the positioning support, welding or other operations may be performed on them, resulting in the hydraulic control system and other mechanical components being not closely connected, and the linkage effect cannot be achieved. In addition, the cause and fault point of the hydraulic control system cannot be accurately and quickly located and solved, and there may be certain safety hazards.

[0022] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic control system for a U-shaped structure dump truck box assembly tooling, comprising a hydraulic control system and a control platform, wherein the hydraulic control system is electrically connected to the control platform, and the hydraulic control system comprises a hydraulic power unit, wherein the hydraulic power unit is connected to an electromagnetic control valve group, wherein the electromagnetic control valve group is connected to a plurality of hydraulic actuators, and the oil outlet ends of the hydraulic actuator and the hydraulic power unit are provided with the same pressure detection unit, wherein the oil outlet end of the electromagnetic control valve group is connected to an electromagnetic flowmeter, and the oil outlet end of the hydraulic actuator is connected to a low-pressure energy storage unit.

[0023] The oil outlet of the hydraulic power unit is connected to the high-pressure energy storage unit, the output end of the pressure detection unit is electrically connected to the input end of the processor, the hydraulic power unit is electrically connected to the current sensor, the output end of the current sensor is electrically connected to the input end of the processor, the output end of the processor is electrically connected to the input end of the simulation module, and the input end of the simulation module is electrically connected to the output ends of the modeling unit and the simulation rule input unit.

[0024] The output end of the simulation module is electrically connected to the input end of the simulation result analysis module, the output end of the simulation result analysis module is electrically connected to the input end of the processor, the input end of the simulation module is electrically connected to the output end of the data storage unit, the output end of the data storage unit is electrically connected to the input end of the modeling unit, the input end of the processor is electrically connected to the output end of the instruction input unit, the output end of the processor is electrically connected to the input end of the alarm component, the output end of the processor is electrically connected to the input end of the display unit, the output end of the processor is electrically connected to the input end of the circuit breaker execution unit, the output end of the processor is electrically connected to the input end of the instruction pool unit, and the instruction pool unit is electrically connected to the hydraulic power unit.

[0025] As a further solution of the present invention: the circuit breaking execution unit is used to execute the circuit breaking command and can control the circuit breaking operations of various circuits;

[0026] The pressure detection unit is used to collect pressure data at multiple locations in the hydraulic pipeline system, collect pressure data at the end of the hydraulic actuator and the discharge of the hydraulic power unit and pressure data in the hydraulic branch;

[0027] The high-pressure energy storage unit is used to absorb excess energy when the pressure in the pipeline system is too high, and release the energy to the pipeline system when the pipeline system needs energy;

[0028] The low-pressure energy storage unit is used to absorb the energy when the oil outlet of the hydraulic actuator discharges oil;

[0029] The current sensor is used to detect the current data of the hydraulic power unit, providing a basis for judging whether the hydraulic control system is powered off;

[0030] The instruction pool unit is used to store action instructions of various hydraulic power units and send instructions.

[0031] As a further solution of the present invention: the modeling unit is used to establish a model according to basic data of the hydraulic control system;

[0032] The simulation rule input unit is used to store the simulation rules of the model operation process and send the simulation rules to the simulation module;

[0033] The simulation module is used to generate a simulation model by combining the model, the simulation rules for the model operation, the pressure detection data and the current detection data;

[0034] The simulation result analysis module is used to analyze the impact of the detection results on the hydraulic control system, analyze the cause and point of the fault, and send the analysis results to the processor;

[0035] The alarm component is used to send out alarm information to prompt the staff;

[0036] The display unit is used to display the simulation analysis results, which include whether the hydraulic control system is working normally, and if an abnormality occurs, the location of the abnormality is displayed.

[0037] The beneficial effects of the present invention are:

[0038] 1. The present invention adopts a pressure detection unit, a current sensor, a simulation module, a modeling unit, a simulation result analysis module and a circuit breaking execution unit. The modeling unit establishes a model according to the basic data of the hydraulic control system. The pressure detection unit is arranged in a plurality of hydraulic actuators, hydraulic power units and hydraulic branches, and can form a network of hydraulic detection in the hydraulic control system. At the same time, the current sensor detects the working current of the hydraulic power unit, and inputs the detected hydraulic data and current data into the simulation module. The simulation module combines the hydraulic control system model, the hydraulic data and the current data, and the simulation rules to form a real-time simulation model, and then analyzes and judges the simulation model to determine whether the data has abnormal conditions or an abnormal development trend of the data. When an abnormal condition occurs in the hydraulic control system, the processor controls other mechanical equipment to stop working at the same time through the circuit breaking execution unit, and controls the hydraulic power unit to stop working through the stop instruction in the instruction pool unit, which can ensure that the device can find the problem in time when an abnormal condition occurs to a certain extent, and control other equipment of the closing operation to stop working synchronously, and it is not easy to have the problem of processing operation before the side plate is supported. The overall linkage of the closing operation is relatively ideal and has good safety performance;

[0039] 2. The present invention adopts a simulation module and a simulation result analysis module. The simulation module can establish a simulation model based on the hydraulic control system data collected in real time, analyze whether the hydraulic control system at that moment has any abnormal situation, or whether the data change is abnormal, and accurately display the abnormal fault point and fault cause analysis in the simulation model, so that the staff can accurately locate the fault point and participate in the maintenance process on site, and can deduce and analyze the abnormal trend of the data, which can play a certain fault prediction function. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the connection of the system of the present invention;

[0041] In the figure: 1. Hydraulic control system; 2. Control platform; 3. Hydraulic power unit; 4. Electromagnetic control valve group; 5. Hydraulic actuator; 6. Low-pressure energy storage unit; 7. High-pressure energy storage unit; 8. Electromagnetic flowmeter; 9. Pressure detection unit; 10. Current sensor; 11. Instruction pool unit; 12. Processor; 13. Simulation module; 14. Data storage unit; 15. Modeling unit; 16. Simulation rule input unit; 17. Simulation result analysis module; 18. Instruction input unit; 19. Alarm component; 20. Display unit; 21. Circuit breaker execution unit. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] As shown in the figure, the present invention provides a hydraulic control system for a U-shaped structure dump truck box assembly tooling, including a hydraulic control system 1 and a control platform 2, the hydraulic control system 1 is electrically connected to the control platform 2, the hydraulic control system 1 includes a hydraulic power unit 3, the hydraulic power unit 3 is connected to an electromagnetic control valve group 4, the electromagnetic control valve group 4 is connected to a plurality of hydraulic actuators 5, the hydraulic actuator 5 and the hydraulic power unit 3 are provided with the same pressure detection unit 9 at the oil outlet end, the electromagnetic control valve group 4 is connected to an electromagnetic flowmeter 8, the hydraulic actuator 5 is connected to a low-pressure energy storage unit 6 at the oil outlet end, and the high-pressure energy storage unit 7 and the low-pressure energy storage unit 6 are provided, and energy absorption can be performed when the pressure in the hydraulic pipeline is too large and the energy in the oil discharged by the hydraulic actuator 5 can be absorbed, which can play a certain role in stabilizing the hydraulic system and increase the energy utilization rate at the same time.

[0044] The oil outlet of the hydraulic power unit 3 is connected to the high-pressure energy storage unit 7, the output end of the pressure detection unit 9 is electrically connected to the input end of the processor 12, the hydraulic power unit 3 is electrically connected to the current sensor 10, the output end of the current sensor 10 is electrically connected to the input end of the processor 12, the output end of the processor 12 is electrically connected to the input end of the simulation module 13, and the input end of the simulation module 13 is electrically connected to the output ends of the modeling unit 15 and the simulation rule input unit 16.

[0045] The output end of the simulation module 13 is electrically connected to the input end of the simulation result analysis module 17, the output end of the simulation result analysis module 17 is electrically connected to the input end of the processor 12, the input end of the simulation module 13 is electrically connected to the output end of the data storage unit 14, the output end of the data storage unit 14 is electrically connected to the input end of the modeling unit 15, the input end of the processor 12 is electrically connected to the output end of the instruction input unit 18, by setting the instruction input unit 18, the staff can input the required action instructions into the control platform 2 through the instruction input unit 18, the output end of the processor 12 is electrically connected to the input end of the alarm component 19, by setting the alarm component 19, the alarm component 19 includes an alarm bell and an alarm light, which is used to emit an alarm sound and an alarm light, the output end of the processor 12 is electrically connected to the input end of the display unit 20, the output end of the processor 12 is electrically connected to the input end of the circuit breaker execution unit 21, the output end of the processor 12 is electrically connected to the input end of the instruction pool unit 11, and the instruction pool unit 11 is electrically connected to the hydraulic power unit 3.

[0046] Specifically, the circuit breaking execution unit 21 is used to execute the circuit breaking command and can control the circuit breaking operations of various circuits;

[0047] The pressure detection unit 9 is used to collect pressure data at multiple locations in the hydraulic pipeline system, collect pressure data at the end of the hydraulic actuator 5 and the discharge of the hydraulic power unit 3 and pressure data in the hydraulic branch;

[0048] The high-pressure energy storage unit 7 is used to absorb excess energy when the pressure in the pipeline system is too high, and release the energy to the pipeline system when the pipeline system needs energy;

[0049] The low-pressure energy storage unit 6 is used to absorb the energy when the oil outlet of the hydraulic actuator 5 discharges oil;

[0050] The current sensor 10 is used to detect the current data of the hydraulic power unit 3, and provides a basis for judging whether the hydraulic control system 1 is powered off;

[0051] The command pool unit 11 is used to store various action commands of the hydraulic power unit 3 and send the commands.

[0052] Specifically, the modeling unit 15 is used to establish a model according to the basic data of the hydraulic control system 1;

[0053] The simulation rule input unit 16 is used to store the simulation rules of the model operation process and send the simulation rules to the simulation module 13;

[0054] The simulation module 13 is used to generate a simulation model by combining the model, the simulation rules for the model operation, the pressure detection data and the current detection data;

[0055] The simulation result analysis module 17 is used to analyze the impact of the detection result on the hydraulic control system 1, analyze the cause and point of the fault, and send the analysis result to the processor 12;

[0056] The alarm component 19 is used to send out an alarm message to remind the staff;

[0057] The display unit 20 is used to display the simulation analysis result, which includes whether the hydraulic control system 1 works normally, and if an abnormality occurs, the location of the abnormality is displayed.

[0058] In summary, in the present invention:

[0059] The pressure detection unit 9, the current sensor 10, the simulation module 13, the modeling unit 15, the simulation result analysis module 17 and the circuit breaking execution unit 21 are used. The modeling unit 15 establishes a model according to the basic data of the hydraulic control system 1. The pressure detection unit 9 is set in multiple hydraulic actuators 5, hydraulic power units 3 and hydraulic branches, which can form a network of hydraulic detection in the hydraulic control system 1. At the same time, the current sensor 10 detects the working current of the hydraulic power unit 3, and inputs the detected hydraulic data and current data into the simulation module 13. The simulation module 13 combines the hydraulic control system 1 model, hydraulic data and current data, and simulation rules to form a real-time The simulation model is then analyzed and judged to determine whether the data is abnormal or has an abnormal development trend. When the hydraulic control system 1 is abnormal, the processor 12 controls other mechanical equipment to stop working at the same time through the circuit breaker execution unit 21, and controls the hydraulic power unit 3 to stop working through the stop command in the instruction pool unit 11. This can ensure that when the device is abnormal, the problem is discovered in time, and other equipment for closing the box can be controlled to stop working synchronously. It is not easy to have the problem of processing the side panel before the support is completed. The overall linkage of the closing operation is ideal and has good safety performance.

[0060] The simulation module 13 and the simulation result analysis module 17 are used. The simulation module 13 can establish a simulation model based on the hydraulic control system 1 data collected in real time, analyze whether the hydraulic control system 1 at that moment has any abnormal situation, or whether the data change is abnormal, and accurately display the abnormal fault point and fault cause analysis in the simulation model, so that the staff can accurately locate the fault point and participate in the maintenance process on site, and can deduce and analyze the abnormal trend of the data, which can play a certain fault prediction function.

[0061] Finally, a few points should be explained: Although the present invention has been described in detail above with general descriptions and specific embodiments, on the basis of the present invention, the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic control system for a U-shaped dump truck box assembly tooling, comprising a hydraulic control system (1) and a control platform (2), characterized in that: The hydraulic control system (1) is electrically connected to the control platform (2), and the hydraulic control system (1) comprises a hydraulic power unit (3), the hydraulic power unit (3) is connected to an electromagnetic control valve group (4), the electromagnetic control valve group (4) is connected to a plurality of hydraulic actuators (5), the hydraulic actuator (5) and the hydraulic power unit (3) are provided with a same pressure detection unit (9) at the oil outlet end, the oil outlet end of the electromagnetic control valve group (4) is connected to an electromagnetic flow meter (8), and the oil outlet end of the hydraulic actuator (5) is connected to a low-pressure energy storage unit (6); The oil outlet of the hydraulic power unit (3) is connected to the high-pressure energy storage unit (7), the output end of the pressure detection unit (9) is electrically connected to the input end of the processor (12), the hydraulic power unit (3) is electrically connected to the current sensor (10), the output end of the current sensor (10) is electrically connected to the input end of the processor (12), the output end of the processor (12) is electrically connected to the input end of the simulation module (13), and the input end of the simulation module (13) is electrically connected to the output ends of the modeling unit (15) and the simulation rule input unit (16); The output end of the simulation module (13) is electrically connected to the input end of the simulation result analysis module (17), the output end of the simulation result analysis module (17) is electrically connected to the input end of the processor (12), the input end of the simulation module (13) is electrically connected to the output end of the data storage unit (14), the output end of the data storage unit (14) is electrically connected to the input end of the modeling unit (15), the input end of the processor (12) is electrically connected to the output end of the instruction input unit (18), the output end of the processor (12) is electrically connected to the input end of the alarm component (19), the output end of the processor (12) is electrically connected to the input end of the display unit (20), the output end of the processor (12) is electrically connected to the input end of the circuit breaker execution unit (21), the output end of the processor (12) is electrically connected to the input end of the instruction pool unit (11), and the instruction pool unit (11) is electrically connected to the hydraulic power unit (3).

2. According to claim 1, a hydraulic control system for a U-shaped dump truck box assembly tooling, characterized in that: The circuit breaking execution unit (21) is used to execute the circuit breaking command and can control the circuit breaking operations of various circuits; The pressure detection unit (9) is used to collect pressure data at the end of the hydraulic actuator (5) and the discharge point of the hydraulic power unit (3) and pressure data in the hydraulic branch circuit; The high-pressure energy storage unit (7) is used to absorb excess energy when the pressure in the pipeline system is too high, and release the energy to supply the pipeline system when the pipeline system needs energy; The low-pressure energy storage unit (6) is used to absorb the energy when the oil outlet end of the hydraulic actuator (5) discharges oil; The current sensor (10) is used to detect the current data of the hydraulic power unit (3) to provide a basis for judging whether the hydraulic control system (1) is powered off; The instruction pool unit (11) is used to store action instructions of various hydraulic power units (3) and send instructions.

3. According to claim 1, a hydraulic control system for a U-shaped dump truck box assembly tooling, characterized in that: The modeling unit (15) is used to establish a model based on basic data of the hydraulic control system (1); The simulation rule input unit (16) is used to store the simulation rules of the model operation process and send the simulation rules to the simulation module (13); The simulation module (13) is used to generate a simulation model by combining the model, the simulation rules for the model operation, the pressure detection data and the current detection data; The simulation result analysis module (17) is used to analyze the impact of the detection result on the hydraulic control system (1), analyze the cause and point of the fault, and send the analysis result to the processor (12); The alarm component (19) is used to send out an alarm message to alert the staff; The display unit (20) is used to display the simulation analysis results, which include whether the hydraulic control system (1) is operating normally, and if an abnormality occurs, the location of the abnormality is displayed.

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