A device for measuring the attenuation of compressive and elastic forces of an object during wear.

Abstract

This utility model relates to the field of measuring equipment technology, and in particular to a device for measuring the attenuation of the compressive rebound force of an object during wear. It includes a lower platform, an upper platform, a pressure sensor and monitoring device, a height-adjustable upper sensor platform, a transmission assembly, a drive motor, and a fixed base. The beneficial effects of this utility model are: this technical solution achieves accurate measurement of the attenuation of the rebound force during the wear of a seal through dynamic monitoring and multi-parameter adjustable design; by precisely controlling the transmission amount of the screw, different initial compression forces can be set to test the elastic force attenuation of the seal under different initial conditions.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and in particular to a device for measuring the attenuation of the compressive rebound force of an object during wear. Background Technology

[0002] Seals play a crucial role in valve design, and the resilience they provide directly determines the effectiveness of the seal. As valves are constantly opened and closed during operation, seals experience wear, and their resilience gradually diminishes until it can no longer provide an effective seal.

[0003] The existing technology, authorized by announcement number CN2023110075319 - an adjustable seal rebound recovery test device, firstly requires manual observation to detect the rebound performance. Secondly, the existing seals in valves are subject to wear, and the current equipment does not have a direct means of measuring the decrease of the seal's rebound force as it wears down. It is difficult to correlate the design parameters with the effective life of the seal at the design stage.

[0004] Therefore, it is necessary to design a device to measure the attenuation of the compressive rebound force of an object during the wear process to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for measuring the attenuation of the compressive rebound force of an object during wear, so as to overcome the above-mentioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A device for measuring the attenuation of compressive rebound force of an object during wear includes a frame, an upper platform and a lower platform respectively disposed at the upper and lower ends of the frame for placing the test product, and a control system. The device is characterized in that it further includes a detection module disposed above the upper platform for detecting the rebound force of the product, and a transmission component capable of adjusting the height of the upper platform and the detection module. The lower platform is connected to a servo motor, and the servo motor's speed and rotation frequency are adjusted by the control system.

[0007] Preferably, mounting slots for placing measuring products are provided on the opposite surfaces of the upper platform and the lower platform, and a three-jaw chuck is provided on the outside of the mounting slots.

[0008] Preferably, the detection module includes a detection mounting platform and a pressure sensor mounted below the detection mounting platform by a fixing component. The pressure sensor is positioned between the detection mounting platform and the upper platform, and the pressure sensor is electrically or wired to the control system.

[0009] Preferably, the transmission assembly includes a screw and a transmission handwheel for driving the screw to rotate, and the upper platform and the detection and mounting platform are respectively rotatably mounted on the screw.

[0010] Preferably, the clamping end of the three-jaw chuck is provided with an anti-slip pad.

[0011] The beneficial effects of this utility model are: this technical solution achieves accurate measurement of the attenuation of rebound force during the wear process of the seal through dynamic monitoring and multi-parameter adjustable design; By precisely controlling the screw's transmission, different initial compression forces can be set to test the elastic force attenuation of the seal under different initial conditions.

[0012] The adjustable three-jaw chuck design of the upper and lower platforms expands the material adaptability, enabling the fixing of seals of different materials and sizes to meet a variety of testing needs; By controlling the servo motor to edit its speed and rotation frequency, the wear process under different working conditions can be simulated; this solves the problem that existing technologies cannot directly measure the attenuation of rebound force. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a device for measuring the attenuation of compressive rebound force of an object during wear, according to the present invention. In the diagram: 1. Equipment frame; 2. Upper platform; 3. Lower platform; 4. Detection module; 5. Transmission assembly; 6. Three-jaw chuck; 7. Shaft; 8. Servo motor; 9. Control system; 10. Detection and installation platform; 11. Pressure sensor; 51. Screw; 52. Transmission handwheel. Detailed Implementation

[0014] Reference Figure 1 A device for measuring the attenuation of compressive rebound force of an object during wear includes a device frame 1, an upper platform 2 and a lower platform 3 respectively disposed at the upper and lower ends of the device frame 1, a detection module 4 disposed above the upper platform 1 for detecting rebound force, and a transmission component 5 capable of driving the upper platform 2 and the detection module 4 to move up and down. Mounting slots for placing the measured product are respectively provided on the opposite surfaces of the upper platform 2 and the lower platform 3. A three-jaw chuck 6 is provided on the outer side of the mounting slot. In practical applications, the sample to be tested must first be installed and adjusted. The sample to be tested is placed in the mounting slot of the lower platform 3 and fixed with the adjustable three-jaw chuck 6 on the lower platform 3 to ensure that the sample will not be displaced due to friction or external vibration. Then, another sample to be tested is placed below the upper platform 2 and fixed with the adjustable three-jaw chuck 6 on the upper platform 2. Both the upper and lower platforms are equipped with adjustable three-jaw chucks 6, which support the fixing of seals of different materials and sizes, and can meet the wear testing requirements between different materials. In addition, the three-jaw chucks 6 of the upper and lower platforms are designed to be adjustable, which can adjust the clamping force according to the actual size of the sample to be tested, thereby ensuring the stability of the sample during the testing process.

[0015] To further improve testing accuracy, the clamping surface of the three-jaw chuck 6 has been specially treated to have good anti-slip properties, preventing relative movement of the sample during the test.

[0016] The three-jaw chuck 5, located on the lower platform 3, is connected to a servo motor 8 via a shaft 7. The servo motor 8 drives the three-jaw chuck 5 to rotate, and the servo motor 8 is externally connected to a control system 9. The control system 9 can control the speed and rotation time of the servo motor 8. The specific number of rotations of the servo motor can be programmed to simulate the wear cycle, or the speed can be used to simulate the friction rate under different working conditions.

[0017] The detection module 4 includes a detection mounting platform 10 and a pressure sensor 11 mounted below the detection mounting platform 10 by a fixing component. The pressure sensor 11 is positioned between the detection mounting platform 10 and the upper platform 2, and the detection mounting platform is driven to move up and down by the transmission assembly 5. The pressure sensor 11 is electrically or wired to the control system 9 to transmit the detected signal, which is then converted into detection data by the control system 9.

[0018] The transmission assembly 5 includes a screw 51 and a transmission handwheel 52 that drives the screw 51 to rotate. The upper platform 2 is rotatably mounted on the screw 51, and the detection mounting platform 10 is rotatably mounted on the screw 51. To achieve the drive, the specific implementation principle can be as follows: a series linear drive with sequential movement. The screw is equipped with two nuts: nut A and nut B. Nut A directly meshes with the screw and drives the detection mounting platform 10. Nut B is fitted onto the screw through a one-way clutch (or overrunning clutch) or a releasable locking mechanism, and it drives the upper platform 2. The working process is as follows: First step: The screw rotates forward. Nut A begins to move linearly, and the detection mounting platform 10 moves. At this time, nut B does not move with the screw rotation temporarily because its clutch is in an "overrunning" state (idling), and the upper platform 2 remains stationary. Subsequently, the detection mounting platform 10 moves to the end point and contacts nut B or its triggering mechanism, and begins to push nut B to move together. Since nut B is mechanically pushed at this time, its clutch is locked, thereby driving the upper platform 2 to start moving. Conversely, the screw reverses direction. The process is reversed. Nut B is first driven to move in the opposite direction by the screw, and the upper platform 2 resets first. Only after structure B returns to its initial position does nut A begin its reverse movement, driving the detection and mounting platform 10 to reset. Alternatively, the detection and mounting platform 10 and the upper platform 2 are each connected to a drive motor, which drives movement and adjusts the height. Furthermore, the drive motors are connected to a control system, allowing for precise adjustment to suit different needs.

[0019] In this implementation, after sample fixation, the height of the testing platform 10 needs to be adjusted to set the initial compression force. This is achieved by rotating the transmission handwheel 52 in the transmission assembly 5, which drives the screw 51 for precise transmission, thus adjusting the height of the testing platform 10. The screw 51 is designed with a high-precision ball screw structure, enabling micron-level height adjustment and ensuring the accuracy of the initial compression force setting. During adjustment, the transmission handwheel 52 is slowly rotated, causing the testing platform 10 to gradually descend until the pressure sensor 11 contacts the sample and generates a certain initial pressure. At this point, the pressure sensor 11 is located between the testing platform 10 and the upper platform 2, monitoring the contact pressure between the two samples in real time. Continuing to rotate the transmission handwheel 52, the upper platform 2 slowly moves downward, and the two samples gradually come into contact, generating greater pressure. When the reading of the pressure sensor 11 reaches the preset value, height adjustment is stopped, and the testing platform 10 is fixed in its current position. The pressure sensor 11 has an accuracy of ±5N and can record the change in rebound force in real time during the test.

[0020] After setting the initial compression force, the servo motor 8 is activated to simulate the wear process. The servo motor 8 is connected to the lower platform 3 via the control system 9, and its speed and rotation frequency can be adjusted via the controller. In actual operation, the user can set different speeds and rotation frequencies according to testing requirements. For example, when testing valve seals, the speed can be set to 100 revolutions per minute and the rotation frequency to 1000 times to simulate the frequent opening and closing conditions of the valve. The operation of the servo motor 8 drives the lower platform 3 to rotate, causing relative friction between the sample to be tested on the lower platform 3 and the sample on the upper platform 2. During this process, the pressure sensor 11 continuously monitors the change in the rebound force between the two samples and transmits the data to the monitoring device for recording and analysis.

[0021] During the wear test, the rebound force data generated by pressure sensor 11 reflects the decrease in elastic force of the seal during the wear process. By continuously recording this data, a rebound force decay curve can be generated. The test results show that as the wear cycle increases, the rebound force of the seal gradually decreases and eventually stabilizes. This dynamic monitoring method differs from the traditional static single measurement and can more realistically reflect the performance changes of the seal under actual working conditions.

[0022] The operation procedure of this device is as follows: S1, adjust the height of the testing platform 10 using the transmission handwheel 52, and fix the sample to be tested in the three-jaw chuck 6 of the upper and lower platforms respectively; S2, slowly rotate the transmission handwheel 52 to lower the testing platform 10 until the two samples contact and reach the set initial compression force; S3, set the speed and number of rotations of the servo motor, start the motor to drive the lower platform 3 to rotate, and simulate the wear process; S4, turn on the pressure sensor monitoring device, record the rebound force data during the wear test, and generate a rebound force decay curve. Through the above steps, accurate measurement of the rebound force decay during the wear process of the seal can be achieved.

[0023] The advantages of this utility model are that, through dynamic monitoring and multi-parameter adjustable design, this technical solution achieves accurate measurement of the attenuation of the rebound force during the wear process of the seal. By precisely controlling the screw's transmission, different initial compression forces can be set to test the elastic force decay of the seal under different initial conditions.

[0024] The adjustable three-jaw chuck design of the upper and lower platforms expands the material adaptability, enabling the fixing of seals of different materials and sizes to meet a variety of testing needs; By controlling the servo motor and editing its speed and rotation frequency, the wear process under different working conditions can be simulated; this solves the problem that existing technologies cannot directly measure the attenuation of rebound force.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the attenuation of compressive resilience force of an object during wear, comprising a frame, an upper platform and a lower platform respectively disposed at the upper and lower ends of the frame for placing the test product, and a control system, characterized in that: It also includes a detection module disposed above the upper platform for detecting the product's rebound force, and a transmission component capable of adjusting the height and position of the upper platform and the detection module; The lower platform is connected to a servo motor, and the servo motor's speed and rotation frequency are adjusted by the control system.

2. The device for measuring the attenuation of compressive rebound force of an object during wear according to claim 1, characterized in that: Mounting slots for placing measuring products are provided on the opposite sides of the upper platform and the lower platform, and a three-jaw chuck is provided on the outside of the mounting slots.

3. The device for measuring the attenuation of compressive rebound force of an object during wear according to claim 1, characterized in that: The detection module includes a detection mounting platform and a pressure sensor mounted below the detection mounting platform by a fastener. The pressure sensor is located between the detection mounting platform and the upper platform, and the pressure sensor is electrically or wired to the control system.

4. The device for measuring the attenuation of compressive rebound force of an object during wear according to claim 1, characterized in that: The transmission assembly includes a screw and a transmission handwheel that drives the screw to rotate. The upper platform and the detection and mounting platform are rotatably mounted on the screw.

5. The device for measuring the attenuation of compressive rebound force of an object during wear according to claim 2, characterized in that: The clamping end of the three-jaw chuck is equipped with an anti-slip pad.

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