High-frequency vibration measuring instrument and use method thereof

Abstract

The invention provides a high-frequency vibration measuring instrument and a using method thereof, and belongs to the field of high-frequency vibration measuring tools. The high-frequency vibration measuring instrument comprises a sound vibration measuring instrument and a measuring head. The top of the sound vibration measuring instrument is provided with a fixing plate, and the fixing plate is provided with a winding assembly. The winding assembly comprises a driving motor and a movable seat, the driving motor is arranged on the fixed plate, the movable seat is arranged at the output end of the driving motor and connected with the top of the fixed plate, a small belt pulley is arranged at the top of the movable seat and connected with a large belt pulley through a belt, and a winding roller is arranged at the bottom of the large belt pulley. The transmission line is wound on the outer diameter surface of the winding roller, and the measuring head is arranged on the transmission line wound on the outer diameter surface of the winding roller. The problem that in the prior art, manual operation is needed, operation is tedious, and consequently the measurement efficiency of the vibration characteristics and performance of an object in a high-frequency vibration environment is low is solved.

Description

Technical Field

[0001] The invention belongs to the field of high-frequency vibration measuring tools, and in particular relates to a high-frequency vibration measuring instrument and a use method thereof. Background Art

[0002] Nowadays, high-frequency vibration measuring instruments, as a very important testing equipment, play a vital role. High-frequency vibration measuring instruments are mainly used to measure and analyze the vibration characteristics and performance of objects in high-frequency vibration environments. High-frequency vibration measuring instruments can not only provide the vibration parameters of objects at different frequencies and amplitudes, but also reveal the dynamic response and vibration behavior of objects through data analysis units.

[0003] The application field of high-frequency vibration measuring instruments is very wide. For example, in the automotive field, high-frequency vibration measuring instruments are used for vibration testing of automobile engines and other components. For example, in the field of medical equipment, high-frequency vibration measuring instruments are used to detect the vibration performance of medical equipment to ensure that the medical equipment can be used normally.

[0004] High-frequency vibration test instruments mainly include four parts: vibration sensor, signal conditioner, control and acquisition system, and data analysis and display unit. The vibration sensor, signal conditioner, control and acquisition system, and data analysis and display unit work together to enable high-frequency vibration test instruments to play a vital role in multiple fields (such as mechanical manufacturing, aerospace, and construction engineering). Among them, the vibration sensor is mainly responsible for converting the vibration signal of the object under test into an electrical signal, and the signal conditioner is mainly used to process the electrical signal output by the vibration sensor. The control and acquisition system is mainly responsible for controlling the entire test process and collecting data. The data analysis and display unit is mainly used to analyze and display data. High-frequency vibration measuring instruments play an important role in many industries. They can not only help maintain the performance of equipment and structures, but also measure the vibration of equipment during operation. Through the analysis of vibration data, problems with the equipment can be discovered in time, such as loose equipment or equipment wear. High-frequency vibration measuring instruments can also be used to monitor the equipment in real time, discover hidden faults in advance, and avoid equipment failures, thereby ensuring the continuity of production and improving production efficiency. At the same time, high-frequency vibration measuring instruments can also be used to monitor the equipment in real time, and corresponding maintenance measures can be taken before serious equipment failures occur, thereby effectively reducing maintenance and repair costs.

[0005] Currently available high-frequency vibration measuring instruments require manual operation by operators, which is cumbersome and results in low efficiency in measuring the vibration characteristics and performance of objects in a high-frequency vibration environment. Summary of the invention

[0006] The purpose of the present invention is to provide a high-frequency vibration measuring instrument and a method of using the same, so as to solve the problem in the prior art that manual operation is required, the operation is cumbersome and the measurement efficiency of the vibration characteristics and performance of an object in a high-frequency vibration environment is low.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a high-frequency vibration measuring instrument, comprising a sound vibration measuring instrument and a measuring head; A fixing plate is provided on the top of the sound vibration measuring instrument, and a winding assembly is provided on the fixing plate; The winding assembly includes a driving motor and a movable seat, the driving motor is arranged on a fixed plate, the output end of the driving motor is provided with a movable seat, the movable seat is connected to the top of the fixed plate, a small pulley is arranged on the top of the movable seat, the small pulley is connected to a large pulley through a belt, a winding roller is arranged at the bottom of the large pulley, a transmission line is wound around the outer diameter surface of the winding roller, and the measuring head is arranged on the transmission line wound around the outer diameter surface of the winding roller.

[0008] A further improvement of the present invention is that the measuring head is replaceable.

[0009] A further improvement of the present invention is that it also includes a connecting component, a connecting groove is provided inside the measuring head, the connecting component is placed inside the connecting groove, a connecting head matching the connecting groove is provided on the transmission line, and the axial surface of the connecting head is also provided with a card slot and a transmission electrical sheet.

[0010] A further improvement of the present invention is that a thermal expansion and contraction ring is provided inside the connecting groove.

[0011] A further improvement of the present invention is that the display assembly is arranged on one side of the sound vibration measuring instrument.

[0012] A further improvement of the present invention is that it also includes a protective component, which covers the display component, and the protective component includes a protective plate. A groove is also provided inside the protective component, and a connecting rod is provided inside the groove. A spring and a sliding block are mounted on the connecting rod, and the top of the spring is connected to the sliding block. The protective plate is connected to the connecting rod through the sliding block.

[0013] A further improvement of the present invention is that it also includes a control component, which includes a controller for controlling the on and off of the sound vibration measuring instrument, and the controller is connected to the sound vibration measuring instrument by signal.

[0014] In a second aspect, the present invention provides a method for using the high-frequency vibration measuring instrument introduced above, comprising the following steps: When measurement is required, start the drive motor in the winding assembly, the drive motor drives the movable seat to rotate, the movable seat drives the small pulley to rotate, the small pulley drives the large pulley to rotate through the belt, the large pulley drives the winding roller to rotate, and during the winding of the transmission line wrapped around the outer diameter surface of the winding roller, the measuring head reaches the position to be measured, stop the drive motor in the winding assembly, and use the measuring head to perform measurement.

[0015] A further improvement of the present invention is that a connection groove is provided inside the measuring head, a connector matching the connection groove is provided on the transmission line, and a card slot and a transmission electric sheet are also provided on the axial surface of the connector.

[0016] A further improvement of the present invention is that the measuring head is replaceable.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention belongs to an improved invention. Compared with the existing high-frequency vibration measuring instrument, the high-frequency vibration measuring instrument proposed in the present invention is designed with a sound vibration measuring instrument and a measuring head. A fixed plate is arranged on the top of the sound vibration measuring instrument, and a winding assembly is arranged on the fixed plate. The winding assembly includes a driving motor and a movable seat. The driving motor is arranged on the fixed plate. The output end of the driving motor is arranged with a movable seat. The movable seat is connected to the top of the fixed plate. A small pulley is arranged on the top of the movable seat. The small pulley is connected to the large pulley through a belt. A winding roller is arranged at the bottom of the large pulley. The outer diameter surface of the winding roller is wound with a transmission line. The measuring head is arranged on the transmission line wound on the outer diameter surface of the winding roller. It can be seen that the high-frequency vibration measuring instrument proposed in the present invention does not require manual operation by an operator. The driving motor can drive the movable seat to rotate, the movable seat drives the small pulley to rotate, the small pulley drives the large pulley to rotate by using a belt, the large pulley drives the winding roller to rotate, and the winding roller is used to wind up the transmission line, so as to use the measuring head for measurement, and the operation is simple and convenient. Compared with the prior art, the present invention effectively solves the problem in the prior art that manual operation is required, the operation is cumbersome and leads to low efficiency in measuring the vibration characteristics and performance of an object in a high-frequency vibration environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the high frequency vibration measuring instrument of the present invention; Figure 2 It is a detailed structural diagram of the high-frequency vibration measuring instrument of the present invention; Figure 3 It is a structural schematic diagram of the winding assembly in the high-frequency vibration measuring instrument of the present invention; Figure 4It is a structural schematic diagram of a connector and a connecting slot in a high-frequency vibration measuring instrument of the present invention; Figure 5 for Figure 2 The enlarged view of point A in the middle; Figure 6 for Figure 2 The enlarged view of point B in the middle; In the figure: 1. Sound and vibration measuring instrument; 2. Charging port; 3. Mounting slot; 4. Rotating shaft; 5. Torsion spring; 6. Dust cover; 7. Display screen; 8. Protection assembly; 81. Groove; 82. Connecting rod; 83. Spring; 84. Sliding block; 85. Protection plate; 9. Controller; 10. Winding assembly; 101. Driving motor; 102. Movable seat; 103. Small pulley; 104. Large pulley; 105. Winding roller; 106. Transmission line; 11. Measuring head; 121. Connecting head; 122. Card slot; 123. Transmission electric sheet; 124. Connecting slot; 125. Thermal expansion and contraction circle; 13. L-shaped plate. DETAILED DESCRIPTION

[0019] In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0020] The high-frequency vibration measuring instrument proposed in the present invention designs a sound vibration measuring instrument and a measuring head. A fixed plate is arranged on the top of the sound vibration measuring instrument, and a winding assembly is arranged on the fixed plate. The winding assembly includes a driving motor and a movable seat, the driving motor is arranged on the fixed plate, and a movable seat is arranged at the output end of the driving motor, the movable seat is connected to the top of the fixed plate, a small pulley is arranged on the top of the movable seat, the small pulley is connected to a large pulley through a belt, a winding roller is arranged on the bottom of the large pulley, a transmission line is wound around the outer diameter surface of the winding roller, and the measuring head is arranged on the transmission line wound around the outer diameter surface of the winding roller. Compared with the prior art, the present invention effectively solves the problem in the prior art that manual operation is required, the operation is cumbersome, and the measurement efficiency of the vibration characteristics and performance of an object in a high-frequency vibration environment is low.

[0021] Embodiment 1: This embodiment discloses a high-frequency vibration measuring instrument. The overall structure diagram and detailed structure diagram of the high-frequency vibration measuring instrument of this embodiment are as follows: Figure 1 and Figure 2 As shown, the technical solution of this embodiment is specifically described as follows: The high-frequency vibration measuring instrument of this embodiment includes a sound vibration measuring instrument 1 and a measuring head 11. The sound vibration measuring instrument 1 and the measuring head 11 are described in detail below: A fixing plate (in this embodiment, the fixing plate is an L-shaped plate 13 ) is disposed on the top of the sound vibration measuring instrument 1 , and a winding assembly 10 is disposed on the fixing plate.

[0022] The winding assembly 10 includes a driving motor 101 and a movable seat 102. The driving motor 101 is arranged on a fixed plate. The output end of the driving motor 101 is provided with a movable seat 102. The movable seat 102 is connected to the top of the fixed plate. A small pulley 103 is arranged on the top of the movable seat 102. The small pulley 103 is connected to a large pulley 104 through a belt, which can make the rotation state more stable. A winding roller 105 is arranged at the bottom of the large pulley 104. The outer diameter surface of the winding roller 105 is wound with a transmission line (such as a transmission wire) 106. The outer end of the transmission line 106 is provided with an insulating material (such as rubber, which not only has good insulation performance, but also can adapt to different environments). The measuring head 11 is arranged on the transmission line 106 wound on the outer diameter surface of the winding roller 105. The structural schematic diagram of the winding assembly 10 is shown in Figure 3.

[0023] The measuring head 11 of this embodiment can be replaced, which not only makes it convenient for maintenance personnel to maintain and replace the measuring head 11, but also can adapt to different testing requirements. For example, when the measuring head 11 is damaged during use, only the corresponding measuring head needs to be replaced, and there is no need to replace the entire high-frequency vibration measuring instrument, thereby reducing the downtime of the high-frequency vibration measuring instrument, thereby increasing working time and reducing working costs. Moreover, when different measuring heads 11 need to be replaced to measure different equipment, the measuring head 11 can be directly replaced without operating the entire high-frequency vibration measuring instrument, which is simple and convenient to operate.

[0024] In this embodiment, the measuring head 11 is provided with a connection slot 124 inside, and the transmission line 106 is provided with a connector 121 matched with the connection slot 124. The axial surface of the connector 121 is also provided with a card slot 122 and a transmission electric sheet 123. A heat expansion and cold contraction ring 125 is provided inside the connection slot 124 to effectively reduce the stress and deformation of the connection slot 124 and its connecting parts caused by temperature changes. The specific structure of the connector 121 and the connection slot 124 is as follows: Figure 4 shown.

[0025] In this embodiment, the thermal expansion and contraction ring 125 is made of a stainless steel thermal expansion and contraction ring. The stainless steel thermal expansion and contraction ring not only has strong wear resistance, but is also not easy to rust.

[0026] The high-frequency vibration measuring instrument of this embodiment also includes a charging component, which is arranged on one side of the sound vibration measuring instrument 1. The charging component includes a charging port 2. A mounting groove 3 is arranged on one side of the sound vibration measuring instrument 1. A rotating shaft 4 is rotatably connected inside the mounting groove 3. The rotating shaft 4 is a cast steel rotating shaft. The rotating shaft made of cast steel is not only strong, but also has strong wear resistance. A torsion spring 5 is arranged at the outer end of the rotating shaft 4. The torsion spring 5 twists or rotates the elastic material with soft material and high toughness to make it have greater mechanical energy. A dust cover 6 is arranged at one end of the rotating shaft 4. Figure 5 shown.

[0027] When the high-frequency vibration measuring instrument is not charged, the rotating shaft 4 utilizes the elastic rebound of the torsion spring 5, and the rotating shaft 4 drives the dust cover 6 to be adjusted, and the dust cover 6 is adjusted to one side of the charging port 2 to protect the interior of the charging port 2, thereby preventing dust from entering the charging port 2.

[0028] The high frequency vibration measuring instrument of this embodiment further includes a display component, which is arranged on one side of the sound vibration measuring instrument 1. The display component includes a display screen 7 (for example, an electronic display screen, which has high definition and contrast and is also easy to install). The high frequency vibration measuring instrument of this embodiment further includes a protection component 8, which covers the display component and is used to protect the surface of the display component. The protection component 8 includes a protection plate 85, and a groove 81 is further provided inside the protection component 8. A connecting rod 82 is provided inside the groove 81. A spring 83 and a sliding block 84 are sleeved on the connecting rod 82. The top of the spring 83 is connected to the sliding block 84. The protection plate 85 is connected to the connecting rod 82 through the sliding block 84. Figure 6 shown.

[0029] The protective plate 85 of this embodiment is made of stainless steel. The stainless steel protective plate is not only high in strength and hardness, but also has a good protective effect and can prevent external impact and wear.

[0030] The connecting rod 82 of this embodiment is made of a stainless steel connecting rod, which not only has strong corrosion resistance but also has relatively high rigidity and strength.

[0031] The sliding block 84 of this embodiment is made of stainless steel. The stainless steel sliding block is not only highly wear-resistant but also has a smooth surface.

[0032] The high frequency vibration measuring instrument of this embodiment also includes a control component, which includes a controller 9 (such as an MCU controller) for controlling the on and off of the sound vibration measuring instrument 1 and the charging component. The controller 9 is connected to the sound vibration measuring instrument 1 and the charging component by signal.

[0033] The working principle of the high frequency vibration measuring instrument of this embodiment is described as follows: The tester places the connecting head 121 in the connecting groove 124 inside the measuring head 11 , and cools the connecting groove 124 and its connecting parts through the thermal expansion and contraction ring 125 .

[0034] Start the driving motor 101, the driving motor 101 drives the movable seat 102 to rotate, the movable seat 102 drives the small pulley 103 to rotate, the small pulley 103 drives the large pulley 104 to rotate through the belt, the large pulley 104 drives the winding roller 105 to rotate, and the winding roller 105 is used to wind up the transmission line 106 to prevent the transmission line 106 from being tangled, and then measurement is performed through the measuring head 11.

[0035] Embodiment 2: This embodiment discloses a method for using a high-frequency vibration measuring instrument. The method for using the high-frequency vibration measuring instrument of this embodiment includes the following steps: When measurement is required, the drive motor 101 in the winding assembly 10 is started, the drive motor 101 drives the movable seat 102 to rotate, the movable seat 102 drives the small pulley 103 to rotate, the small pulley 103 drives the large pulley 104 to rotate through the belt, the large pulley 104 drives the winding roller 105 to rotate, and during the winding of the transmission line 106 wound on the outer diameter surface of the winding roller 105, the measuring head 11 reaches the position to be measured, the drive motor 101 in the winding assembly 10 is stopped, and the measuring head 11 is used to perform measurement.

[0036] In order to verify the accuracy of the high-frequency vibration measuring instrument proposed in the present invention, this embodiment also calibrates the high-frequency vibration measuring instrument, including the following steps: S1. Compare the actual value obtained by the standard vibration source with the displayed value obtained by the sound vibration measuring instrument 1 to obtain a comparison result between the actual value and the displayed value.

[0037] First, the actual value obtained by the standard vibration source and the displayed value obtained by the sound vibration measuring instrument 1 are compared to obtain a comparison result between the actual value and the displayed value.

[0038] S2. Calibrate the display value of the sound vibration measuring instrument 1 based on the comparison result between the actual value and the display value, thereby completing the calibration of the high-frequency vibration measuring instrument.

[0039] Based on the comparison result between the actual value and the displayed value, the displayed value of the sound vibration measuring instrument 1 is calibrated (zero point calibration, sensitivity calibration, linearity calibration and repeatability calibration), thereby completing the calibration of the high-frequency vibration measuring instrument.

[0040] The specific process of calibrating the high-frequency vibration measuring instrument in this embodiment is described as follows: S1. Set up a calibration environment and prepare calibration equipment, which includes a standard vibration source and a sound vibration measuring instrument 1.

[0041] First, a calibration environment is set up and calibration equipment is prepared, including a standard vibration source and a sound vibration measuring instrument 1.

[0042] S2. Perform zero point calibration, sensitivity calibration, linearity calibration and repeatability calibration on the high-frequency vibration measuring instrument based on the constructed calibration environment and prepared calibration equipment.

[0043] Based on the constructed calibration environment (temperature, humidity and air pressure should meet the requirements and should not be affected by vibration interference) and the prepared calibration equipment (standard vibration source and sound vibration measuring instrument 1), the high-frequency vibration measuring instrument is calibrated for zero point, sensitivity, linearity and repeatability.

[0044] The following is a detailed description of zero point calibration, sensitivity calibration, linearity calibration and repeatability calibration. The description of each calibration is as follows: A. Zero point calibration Place the sound and vibration measuring instrument 1 on a stable table, ensure that the sound and vibration measuring instrument 1 is in close contact with the table, turn on the power of the sound and vibration measuring instrument 1, and enter the calibration mode (zero point calibration mode) after the self-check is completed.

[0045] B. The sensitivity calibration of the high-frequency vibration measuring instrument based on the established calibration environment and prepared calibration equipment includes the following steps: Setting a specific vibration frequency and a specific amplitude on the standard vibration source, and obtaining a display value of the sound vibration measuring instrument 1 at the corresponding vibration frequency and amplitude; The obtained display value of the sound vibration measuring instrument 1 is compared with the actual value of the standard vibration source to obtain the deviation value between the display value of the sound vibration measuring instrument 1 and the actual value of the standard vibration source; Adjust the sensitivity of the sound vibration measuring instrument 1 according to the deviation value between the display value of the sound vibration measuring instrument 1 and the actual value of the standard vibration source until the display value of the sound vibration measuring instrument 1 is consistent with the actual value of the standard vibration source; Repeat the above steps to perform sensitivity calibration on high-frequency vibration measuring instruments with different vibration frequencies and amplitudes.

[0046] C. The linearity calibration of the high-frequency vibration measuring instrument based on the established calibration environment and prepared calibration equipment includes the following steps: Setting a specific range of vibration frequency and amplitude on the standard vibration source to obtain an output signal of the sound vibration measuring instrument 1 at the corresponding vibration frequency and amplitude; The output signal of the sound vibration measuring instrument 1 is compared with the actual value of the standard vibration source to obtain a fitting straight line between the output signal of the sound vibration measuring instrument 1 and the actual value of the standard vibration source; the display value of the sound vibration measuring instrument 1 is calibrated based on the fitting straight line between the output signal of the sound vibration measuring instrument 1 and the actual value of the standard vibration source, thereby completing the linearity calibration of the high-frequency vibration measuring instrument.

[0047] D. Repeatability calibration The sound vibration measuring instrument 1 is subjected to repeated measurements for a plurality of times to check the repeatability of the measurement results.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A high frequency vibration measuring instrument, characterized in that: It comprises a sound vibration measuring instrument (1) and a measuring head (11); A fixing plate is provided on the top of the sound vibration measuring instrument (1), and a winding assembly (10) is provided on the fixing plate; The winding assembly (10) comprises a driving motor (101) and a movable seat (102), wherein the driving motor (101) is arranged on a fixed plate, the output end of the driving motor (101) is provided with a movable seat (102), the movable seat (102) is connected to the top of the fixed plate, a small belt pulley (103) is provided on the top of the movable seat (102), the small belt pulley (103) is connected to a large belt pulley (104) via a belt, a winding roller (105) is provided at the bottom of the large belt pulley (104), a transmission line (106) is wound around the outer diameter surface of the winding roller (105), and the measuring head (11) is provided on the transmission line (106) wound around the outer diameter surface of the winding roller (105).

2. The high-frequency vibration measuring instrument according to claim 1, characterized in that: The measuring head (11) is replaceable.

3. The high-frequency vibration measuring instrument according to claim 2, characterized in that: The measuring head (11) is provided with a connection slot (124) inside, the transmission line (106) is provided with a connector (121) matching the connection slot (124), and the axial surface of the connector (121) is also provided with a card slot (122) and a transmission electric sheet (123).

4. The high frequency vibration measuring instrument according to claim 3, characterized in that: A thermal expansion and contraction ring (125) is arranged inside the connection groove (124).

5. The high-frequency vibration measuring instrument according to claim 1, characterized in that: It also includes a display component, which is arranged on one side of the sound vibration measuring instrument (1).

6. The high frequency vibration measuring instrument according to claim 5, characterized in that: The device also comprises a protective component (8), wherein the protective component (8) covers the display component, the protective component (8) comprises a protective plate (85), a groove (81) is provided inside the protective component (8), a connecting rod (82) is provided inside the groove (81), a spring (83) and a sliding block (84) are sleeved on the connecting rod (82), the top of the spring (83) is connected to the sliding block (84), and the protective plate (85) is connected to the connecting rod (82) via the sliding block (84).

7. The high-frequency vibration measuring instrument according to claim 6, characterized in that: It also includes a control component, which includes a controller (9) for controlling the on and off of the sound vibration measuring instrument (1), and the controller (9) is connected to the sound vibration measuring instrument (1) by signal.

8. A method for using the high-frequency vibration measuring instrument according to any one of claims 1 to 7, characterized in that: The following steps are involved: When measurement is required, the drive motor (101) in the winding assembly (10) is started, the drive motor (101) drives the movable seat (102) to rotate, the movable seat (102) drives the small belt pulley (103) to rotate, the small belt pulley (103) drives the large belt pulley (104) to rotate through the belt, the large belt pulley (104) drives the winding roller (105) to rotate, and during the winding of the transmission line (106) wound on the outer diameter surface of the winding roller (105), the measuring head (11) reaches the position to be measured, the drive motor (101) in the winding assembly (10) is stopped, and the measuring head (11) is used to perform measurement.

9. The method for using the high-frequency vibration measuring instrument according to claim 8, characterized in that: The measuring head (11) is provided with a connection slot (124) inside, the transmission line (106) is provided with a connector (121) matching the connection slot (124), and the axial surface of the connector (121) is also provided with a card slot (122) and a transmission electric sheet (123).

10. The method for using the high-frequency vibration measuring instrument according to claim 8, characterized in that: The measuring head (11) is replaceable.

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