Variable porosity valve core design method of multi-stage collaborative oil buffer

Abstract

The invention discloses a method for designing a variable porosity valve element of a multi-stage collaborative oil buffer. The method comprises the following steps that S1, requirements are analyzed, and parameters are determined; s2, designing a multi-stage coordinated regulation mechanism; s3, optimizing the structure of the valve element; s4, integrating a control system; s5, performance verification and optimization are carried out; by means of a multi-stage cooperative adjusting mechanism, the porosity of the valve element is dynamically adjusted, the buffering effect can be automatically optimized according to different working conditions, and the adaptability and buffering performance of the oil buffer are improved; the design that the porous material with the variable porosity is combined with multiple adjusting mechanisms is adopted, the adjusting range of the porosity is widened, and the buffering precision and stability of the buffer are improved; the integrated control system can monitor the working state of the buffer in real time and automatically adjust the working state of the adjusting mechanism according to feedback data, and the intelligent level and reliability of the buffer are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil hydraulic buffers, and specifically relates to a design method for a variable porosity valve core of a multi-stage cooperative oil hydraulic buffer. Background Art

[0002] Oil hydraulic buffers are widely used in fields such as machinery, automobiles, and automation equipment to absorb impact energy and reduce the impact force of moving parts. The valve cores of traditional oil hydraulic buffers usually adopt a fixed porosity structure, with a single buffering performance and difficult to adapt to the buffering requirements under different working conditions, resulting in an unsatisfactory buffering effect. For example, in the case of a high impact speed or a large impact force, the fixed porosity valve core may cause an excessive buffering force, causing the equipment to receive an excessive impact; while in the case of a low impact speed or a small impact force, it may not be able to effectively absorb the impact energy due to insufficient buffering force. Therefore, designing a variable porosity valve core to achieve multi-stage cooperative buffering and improve the buffering performance and adaptability of the oil hydraulic buffer has important practical significance.

[0003] Based on this, a design method for a variable porosity valve core of a multi-stage cooperative oil hydraulic buffer is designed. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a design method for a variable porosity valve core of a multi-stage cooperative oil hydraulic buffer, effectively solving the problems raised in the background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A design method for a variable porosity valve core of a multi-stage cooperative oil hydraulic buffer, including the following steps:

[0006] Step S1: Requirement analysis and parameter determination;

[0007] Step S2: Design of a multi-stage cooperative adjustment mechanism;

[0008] Step S3: Optimization of the valve core structure;

[0009] Step S4: Integration of the control system;

[0010] Step S5: Performance verification and optimization.

[0011] Preferably, the said step S1: Requirement analysis and parameter determination, includes the following steps:

[0012] S1.1. Working condition analysis: According to the application scenario of the oil hydraulic buffer, analyze the working condition parameters that may be faced during its working process, including but not limited to the magnitude of the impact force, the frequency range, and the movement speed;

[0013] S1.2. Performance target setting: Based on the results of the working condition analysis, determine the buffering effect that the buffer needs to achieve, including but not limited to key performance indicators such as the maximum buffering force, buffering stroke, and buffering time.

[0014] S1.3. Initial determination of spool parameters: According to the performance target, preliminarily determine the size range, material selection, and basic structural form of the spool, including but not limited to the length, diameter, elastic modulus, and yield strength of the spool material.

[0015] Preferably, the step S2: Design of the multi-stage collaborative adjustment mechanism includes the following steps:

[0016] S2.1. Design of the primary adjustment mechanism: Design the primary adjustment mechanism, using a porous material with variable porosity as the main body of the spool. The porosity of this porous material can be preliminarily adjusted by external pressure or temperature changes;

[0017] S2.2. Design of the secondary adjustment mechanism: Set up a secondary adjustment mechanism outside the spool main body, using a hydraulic-driven fine-tuning device. This device applies local pressure to the spool main body through the cooperation of a hydraulic cylinder and a piston to further refine the adjustment range of the porosity. The control signal of the hydraulic cylinder is provided by the pressure sensor and displacement sensor inside the buffer to achieve automatic adjustment according to the real-time working conditions;

[0018] S2.3. Design of the tertiary adjustment mechanism: Design a tertiary adjustment mechanism inside the spool, using an electromagnetic induction heating element. By controlling the power of the heating element, change the temperature distribution inside the spool main body, so as to achieve fine adjustment of the porosity. The control signal of the heating element is adjusted by the control system of the buffer according to the preset buffering effect and real-time working condition feedback.

[0019] Preferably, the step S3: Spool structure optimization includes the following steps:

[0020] S3.1. Optimization of pore distribution: Use computer-aided design and finite element analysis techniques to optimize the pore distribution of the spool main body to ensure that under different porosity states, the flow resistance distribution of the oil in the spool is uniform, avoid local pressure being too high or too low, and improve the stability of the buffering effect;

[0021] S3.2. Strength check of the structure: Check the strength of the optimized spool structure to ensure that the spool will not undergo plastic deformation or damage under the action of the maximum working pressure and impact force. Use the theories of material mechanics and fracture mechanics to calculate the stress distribution and safety factor of the spool;

[0022] S3.3. Design of surface treatment: Carry out special treatment on the spool surface, including but not limited to coating or surface hardening treatment, to improve the wear resistance and corrosion resistance of the spool and extend its service life.

[0023] Preferably, the step S4: control system integration includes the following steps:

[0024] S4.1. Sensor installation and calibration: Install pressure sensors, displacement sensors, and temperature sensors at key positions of the oil buffer to monitor the working state of the buffer in real time, and then calibrate the sensors to ensure that their measurement accuracy and response speed meet the design requirements;

[0025] S4.2. Control algorithm development: Develop a control algorithm based on a multi-stage adjustment mechanism. According to the real-time data fed back by the sensors, automatically adjust the working states of the first-stage, second-stage, and third-stage adjustment mechanisms. The control algorithm adopts fuzzy control theory and combines the dynamic characteristics of the buffer to achieve precise adjustment of the porosity;

[0026] S4.3. System integration and debugging: Integrate the sensors, adjustment mechanisms, and control system into the oil buffer for overall debugging. By simulating actual working conditions, test the buffering effect of the buffer, and optimize and adjust the control system parameters according to the test results until the designed performance target is achieved.

[0027] Preferably, the step S5: performance verification and optimization includes the following steps:

[0028] S5.1. Laboratory test: Under laboratory conditions, conduct performance tests on the designed multi-stage collaborative oil buffer. The test items include but are not limited to key indicators such as the buffer force curve, buffer stroke, and buffer time. Compare the performance data of traditional buffers to verify the effectiveness of the design method;

[0029] S5.2. Actual working condition test: Install the buffer into the actual application equipment for long-term operation tests, record the operation data of the equipment under different working conditions, analyze the buffering effect and reliability of the buffer, and further optimize the design according to the actual test results;

[0030] S5.3. Optimization iteration: According to the results of laboratory tests and actual working condition tests, iteratively optimize the spool design method. The optimization content includes but is not limited to parameter adjustment of the adjustment mechanism, improvement of the control algorithm, and local optimization of the spool structure until the performance of the buffer reaches the best state.

[0031] Preferably, the porous material with variable porosity is a shape memory alloy porous material.

[0032] Preferably, the coating material is selected as a ceramic material with high hardness and low friction coefficient, and the surface hardening treatment adopts one of the carburizing or nitriding processes.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. Through a multi-level collaborative adjustment mechanism, the present invention realizes the dynamic adjustment of the porosity of the valve core, can automatically optimize the buffering effect according to different working conditions, and improves the adaptability and buffering performance of the oil pressure buffer;

[0035] 2. The design that combines porous materials with variable porosity and a variety of adjustment mechanisms broadens the adjustment range of the porosity and improves the buffering accuracy and stability of the buffer;

[0036] 3. The integrated control system can monitor the working state of the buffer in real time and automatically adjust the working state of the adjustment mechanism according to the feedback data, improving the intelligence level and reliability of the buffer;

[0037] 4. The optimized valve core structure and surface treatment design improve the strength and wear resistance of the valve core, extend the service life of the buffer, and reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0039] In the drawings:

[0040] Figure 1 is a schematic flow chart of the design method of the variable porosity valve core of a multi-level collaborative oil pressure buffer of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Example 1, given by Figure 1 The present invention relates to a design method for a variable porosity valve core of a multi-level collaborative oil pressure buffer, including the following steps:

[0043] Step S1: Requirement analysis and parameter determination;

[0044] Step S2: Design of the multi-level collaborative adjustment mechanism;

[0045] Step S3: Optimization of the valve core structure;

[0046] Step S4: Integration of the control system;

[0047] Step S5: Performance verification and optimization.

[0048] Step S1 of this embodiment: Requirement analysis and parameter determination, including the following steps:

[0049] S1.1. Working condition analysis: According to the application scenario of the oil buffer, analyze the working condition parameters that may be faced during its working process, including but not limited to the impact force magnitude, frequency range, and movement speed;

[0050] S1.2. Performance target setting: Based on the working condition analysis results, determine the buffering effect that the buffer needs to achieve, including but not limited to key performance indicators such as the maximum buffering force, buffering stroke, and buffering time.

[0051] S1.3. Initial determination of spool parameters: According to the performance target, preliminarily determine the size range, material selection, and basic structure form of the spool, including but not limited to the length, diameter of the spool, elastic modulus and yield strength of the material.

[0052] Step S2 of this embodiment: Design of a multi-level collaborative adjustment mechanism, including the following steps:

[0053] S2.1. Design of the primary adjustment mechanism: Design the primary adjustment mechanism, and use a porous material with variable porosity as the spool body. The porosity of this porous material can be preliminarily adjusted by external pressure or temperature changes;

[0054] S2.2. Design of the secondary adjustment mechanism: Set a secondary adjustment mechanism outside the spool body, and use a hydraulically driven fine-tuning device. This device applies local pressure to the spool body through the cooperation of a hydraulic cylinder and a piston to further refine the adjustment range of the porosity. The control signal of the hydraulic cylinder is provided by the pressure sensor and displacement sensor inside the buffer to achieve automatic adjustment according to the real-time working conditions;

[0055] S2.3. Design of the tertiary adjustment mechanism: Design a tertiary adjustment mechanism inside the spool, and use an electromagnetic induction heating element. By controlling the power of the heating element, change the temperature distribution inside the spool body, so as to achieve fine adjustment of the porosity. The control signal of the heating element is adjusted by the control system of the buffer according to the preset buffering effect and real-time working condition feedback.

[0056] Step S3 of this embodiment: Optimization of the spool structure, including the following steps:

[0057] S3.1. Optimization of pore distribution: Use computer-aided design and finite element analysis technologies to optimize the pore distribution of the spool body to ensure that under different porosity states, the flow resistance distribution of the oil in the spool is uniform, avoid excessive or too low local pressure, and improve the stability of the buffering effect;

[0058] S3.2. Structural Strength Check: Conduct a strength check on the optimized spool structure to ensure that the spool does not undergo plastic deformation or damage under the action of the maximum working pressure and impact force. Use the theories of mechanics of materials and fracture mechanics to calculate the stress distribution and safety factor of the spool.

[0059] S3.3. Surface Treatment Design: Carry out special treatment on the spool surface, including but not limited to coating or surface hardening treatment, to improve the wear resistance and corrosion resistance of the spool and extend its service life.

[0060] Step S4 of this embodiment: Control System Integration, including the following steps:

[0061] S4.1. Sensor Installation and Calibration: Install pressure sensors, displacement sensors, and temperature sensors at key positions of the hydraulic shock absorber to monitor the working state of the shock absorber in real time, and then calibrate the sensors to ensure that their measurement accuracy and response speed meet the design requirements.

[0062] S4.2. Control Algorithm Development: Develop a control algorithm based on a multi-stage adjustment mechanism. According to the real-time data feedback by the sensors, automatically adjust the working states of the first-stage, second-stage, and third-stage adjustment mechanisms. The control algorithm adopts fuzzy control theory and combines the dynamic characteristics of the shock absorber to achieve precise adjustment of the porosity.

[0063] S4.3. System Integration and Debugging: Integrate the sensors, adjustment mechanisms, and control system into the hydraulic shock absorber for overall debugging. By simulating the actual working conditions, test the buffering effect of the shock absorber, and optimize and adjust the control system parameters according to the test results until the designed performance target is achieved.

[0064] Step S5 of this embodiment: Performance Verification and Optimization, including the following steps:

[0065] S5.1. Laboratory Test: Conduct performance tests on the designed multi-stage collaborative hydraulic shock absorber in a laboratory environment. The test items include but are not limited to key indicators such as the buffering force curve, buffering stroke, and buffering time. Compare the performance data of traditional shock absorbers to verify the effectiveness of the design method.

[0066] S5.2. Actual Working Condition Test: Install the shock absorber into the actual application equipment for long-term operation testing. Record the operation data of the equipment under different working conditions, analyze the buffering effect and reliability of the shock absorber, and further optimize the design according to the actual test results.

[0067] S5.3. Optimization Iteration: According to the results of laboratory tests and actual working condition tests, iteratively optimize the spool design method. The optimization content includes but is not limited to parameter adjustment of the adjustment mechanism, improvement of the control algorithm, and local optimization of the spool structure until the performance of the shock absorber reaches the best state.

[0068] The porous material with variable porosity in this embodiment is a shape memory alloy porous material.

[0069] The coating material in this embodiment is selected as a ceramic material with high hardness and low friction coefficient, and the surface hardening treatment adopts one of carburizing or nitriding processes.

[0070] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0071] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A design method for a variable porosity spool of a multi-stage collaborative hydraulic buffer, characterized in that, It includes the following steps: Step S1: Requirement analysis and parameter determination; Step S2: Design of multi-level collaborative adjustment mechanism; Step S3: Optimization of spool structure; Step S4: Integration of control system; Step S5: Performance verification and optimization.

2. The variable porosity spool design method of a multi-stage collaborative hydraulic buffer according to claim 1, characterized in that The said Step S1: Requirement analysis and parameter determination includes the following steps: S1.1, Working condition analysis: According to the application scenario of the oil buffer, analyze the working condition parameters that may be faced during its working process, including but not limited to the impact force magnitude, frequency range, and movement speed; S1.2, Performance target setting: Based on the working condition analysis results, determine the buffering effect that the buffer needs to achieve, including but not limited to key performance indicators such as the maximum buffering force, buffering stroke, and buffering time. S1.3, Initial determination of spool parameters: According to the performance target, preliminarily determine the size range, material selection, and basic structure form of the spool, including but not limited to the length, diameter of the spool, elastic modulus, and yield strength of the material.

3. The variable porosity spool design method of a multi-stage collaborative hydraulic buffer according to claim 1, characterized in that The said Step S2: Design of multi-level collaborative adjustment mechanism includes the following steps: S2.1, Design of the first-level adjustment mechanism: Design the first-level adjustment mechanism, and use a porous material with variable porosity as the spool body. The porosity of this porous material can be preliminarily adjusted by external pressure or temperature change; S2.2, Design of the second-level adjustment mechanism: Set a second-level adjustment mechanism outside the spool body, and use a hydraulic-driven fine-tuning device. This device applies local pressure to the spool body through the cooperation of a hydraulic cylinder and a piston to further refine the adjustment range of the porosity. The control signal of the hydraulic cylinder is provided by the pressure sensor and displacement sensor inside the buffer to achieve automatic adjustment according to the real-time working conditions; S2.3, Design of the third-level adjustment mechanism: Design a third-level adjustment mechanism inside the spool, and use an electromagnetic induction heating element. By controlling the power of the heating element, change the temperature distribution inside the spool body, so as to achieve fine adjustment of the porosity. The control signal of the heating element is adjusted by the control system of the buffer according to the preset buffering effect and real-time working condition feedback.

4. A variable porosity spool design method for a multi-stage collaborative hydraulic buffer according to claim 1, characterized in that The said Step S3: Optimization of spool structure includes the following steps: S3.1, Optimization of pore distribution: Use computer-aided design and finite element analysis technologies to optimize the pore distribution of the spool body, ensure that under different porosity states, the flow resistance distribution of the oil in the spool is uniform, avoid local pressure being too high or too low, and improve the stability of the buffering effect; S3.2, Strength check of the structure: Check the strength of the optimized spool structure to ensure that under the maximum working pressure and impact force, the spool will not undergo plastic deformation or damage. Use the theories of material mechanics and fracture mechanics to calculate the stress distribution and safety factor of the spool; S3.3, Design of surface treatment: Carry out special treatment on the spool surface, including but not limited to coating or surface hardening treatment, to improve the wear resistance and corrosion resistance of the spool and extend its service life.

5. A variable porosity spool design method for a multi-stage cooperative hydraulic buffer according to claim 1, characterized in that The said Step S4: Integration of control system includes the following steps: S4.

1. Sensor Installation and Calibration: Install pressure sensors, displacement sensors, and temperature sensors at key positions of the oil buffer to monitor the working status of the buffer in real time, and then calibrate the sensors to ensure that their measurement accuracy and response speed meet the design requirements; S4.

2. Control Algorithm Development: Develop a control algorithm based on a multi-stage adjustment mechanism. According to the real-time data fed back by the sensors, automatically adjust the working status of the first-stage, second-stage, and third-stage adjustment mechanisms. The control algorithm adopts fuzzy control theory and combines the dynamic characteristics of the buffer to achieve precise adjustment of the porosity; S4.

3. System Integration and Debugging: Integrate the sensors, adjustment mechanisms, and control system into the oil buffer for overall debugging. By simulating actual working conditions, test the buffering effect of the buffer, and optimize and adjust the control system parameters according to the test results until the designed performance target is achieved.

6. A variable porosity spool design method for a multi-stage cooperative hydraulic buffer according to claim 1, characterized in that, The step S5: Performance Verification and Optimization includes the following steps: S5.

1. Laboratory Testing: Conduct performance tests on the designed multi-stage collaborative oil buffer in a laboratory environment. The test items include but are not limited to key indicators such as the buffer force curve, buffer stroke, and buffer time. Compare the performance data of traditional buffers to verify the effectiveness of the design method; S5.

2. Actual Working Condition Testing: Install the buffer into actual application equipment for long-term operation testing, record the operation data of the equipment under different working conditions, analyze the buffering effect and reliability of the buffer, and further optimize the design according to the actual test results; S5.

3. Optimization Iteration: According to the results of laboratory testing and actual working condition testing, iteratively optimize the spool design method. The optimization content includes but is not limited to parameter adjustment of the adjustment mechanism, improvement of the control algorithm, and local optimization of the spool structure until the performance of the buffer reaches the best state.

7. A method for designing a variable porosity spool of a multi-stage collaborative hydraulic buffer according to claim 3, characterized in that, The porous material with variable porosity is a shape memory alloy porous material.

8. A variable porosity spool design method for a multi-stage collaborative hydraulic buffer according to claim 4, characterized in that, The coating material is selected as a ceramic material with high hardness and low friction coefficient, and the surface hardening treatment adopts one of the carburizing or nitriding processes.

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