Simple vibration device for testing vibration sensor

Abstract

The utility model discloses a simple vibration device for testing a vibration sensor, which comprises a fixed-frequency vibration table, a vertical vibration sleeve is mounted on the fixed-frequency vibration table, and a detachable silencing upper cover is mounted at the upper end of the vibration sleeve; a vibration sensor to be tested is vertically placed in the vibration sleeve, the fixed-frequency vibration table drives the vibration sleeve to vibrate, so that the vibration sensor randomly collides up and down in the vibration sleeve, and the vibration sleeve is a metal stainless steel sleeve. According to the device, the large G value random vibration test of the vibration sensor is realized through the simply designed fixed frequency vibration table and the stainless steel vibration sleeve, so that the structural reliability of the vibration sensor can be correspondingly verified, the overall structure is simple and reasonable, and the operation is simple and convenient; according to the device, the specific size relation between the vibration sleeve and the vibration sensor is specifically set, so that the internal vibration sensor can be always in a vertical state, random collision vibration is realized, and the large G value random vibration requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration sensor detection, in particular to a simple vibration device for testing the vibration sensor. Background Art

[0002] In the existing technology, in industrial sites and in the field of new energy, it is necessary to monitor the motion status of mechanical rotating equipment and vibrating equipment in real time, and most monitoring equipment uses vibration acceleration sensors to achieve monitoring. The basic condition of the equipment can be diagnosed by monitoring the physical output value of the sensor and algorithm operation.

[0003] As the name suggests, the vibration sensor needs to be in a vibrating state all the time when working. As the monitored rotating equipment or vibrating equipment is always in a vibrating state, once the rotating equipment or vibrating equipment fails, stops rotating and vibrating, the vibration sensor will alarm accordingly; therefore, the performance and reliability of the vibration sensor are related to the diagnostic results of the equipment.

[0004] In the prior art, in the early stage of mass production, random high-G vibration tests are performed on vibration sensors, which can largely determine the reliability of the vibration sensor structure design, built-in circuit installation method, and component patch welding.

[0005] Traditional vibration shock methods are either high-G mechanical shock with high energy and single frequency, or low-G fixed-frequency vibration tests, which cannot simulate the vibration state close to the actual application of vibration sensors, thus bringing uncertainty to the sensors produced and even the risk of return.

[0006] Therefore, in order to solve the above problems, it is necessary to develop a simple vibration device for testing vibration sensors which has a reasonable structure and can effectively improve the test accuracy. Utility Model Content

[0007] The purpose of the utility model is to provide a simple vibration device for testing a vibration sensor in view of the shortcomings of the prior art; the technical solution is as follows:

[0008] A simple vibration device for testing a vibration sensor comprises a constant frequency vibration table, a vertical vibration sleeve is installed on the constant frequency vibration table, and a detachable sound-absorbing upper cover is installed on the upper end of the vibration sleeve;

[0009] The vibration sensor to be tested is placed vertically in the vibration sleeve, and the fixed-frequency vibration table drives the vibration sleeve to vibrate, so that the vibration sensor collides randomly up and down in the vibration sleeve.

[0010] Furthermore, the vibration sleeve is configured as a metal stainless steel sleeve.

[0011] Furthermore, the outer diameter of the vibration sleeve is set to 1.25 times the outer diameter of the vibration sensor; the height of the vibration sleeve 2 is set to times the height of the vibration sensor.

[0012] Furthermore, the fixed-frequency vibration table drives the vibration sleeve to make the internal vibration sensor generate a large G value of 30-150g.

[0013] Furthermore, a vibration table surface is provided on the fixed-frequency vibration table, and the vibration sleeve is detachably mounted on the vibration table surface.

[0014] Furthermore, a thread groove 7 is provided on the vibration table surface; and a mounting thread matching the thread groove size is provided on the lower end surface of the vibration sleeve, and the vibration sleeve is detachably installed through the cooperation of the mounting thread and the thread groove.

[0015] Furthermore, the silencer upper cover is detachably installed through a threaded structure.

[0016] Beneficial effects: The utility model has the following beneficial effects:

[0017] 1) In this device, a simple fixed-frequency vibration table and a stainless steel vibration sleeve are used to realize a large-G value random vibration test of the vibration sensor, thereby correspondingly verifying the structural reliability of the vibration sensor. The overall structure is simple and reasonable, and the operation is simple and convenient;

[0018] 2) The specific size relationship between the vibration sleeve and the vibration sensor is specifically set in this device, so that the internal vibration sensor can always be in a vertical state, realizing random collision vibration, and meeting the requirements of large G value random vibration;

[0019] 3) The vibration sleeve in the device is made of stainless steel to achieve resonance. On the other hand, the vibration sleeve is detachable. Since the vibration sensor needs to collide randomly inside, the vibration sleeve is at risk of damage. It is designed to be detachable for easy replacement.

[0020] 4) A silencer cover is provided in the device. Since the vibration sensor inside needs to collide randomly, it will generate a lot of noise, and the vibration sensor needs to be confined inside, so a silencer cover is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the utility model. DETAILED DESCRIPTION

[0022] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] like Figure 1 As shown, a simple vibration device for testing a vibration sensor comprises a constant frequency vibration table 1, a vertical vibration cover 2 is installed on the constant frequency vibration table 1, and a detachable sound-absorbing upper cover 3 is installed on the upper end of the vibration cover 2;

[0024] The vibration sensor 4 to be tested is placed vertically in the vibration sleeve 2, and the fixed-frequency vibration table 1 drives the vibration sleeve 2 to vibrate, so that the vibration sensor 4 collides randomly up and down in the vibration sleeve 2; the vibration sleeve 2 is set to be a metal stainless steel sleeve.

[0025] The outer diameter of the vibration sleeve 2 is set to 1.25 times the outer diameter of the vibration sensor 4 ; the height of the vibration sleeve 2 is set to 2 times the height of the vibration sensor 4 .

[0026] The fixed-frequency vibration table 1 drives the vibration sleeve 2 so that the internal vibration sensor 4 generates a large G value of 30-150g; a vibration table surface 6 is arranged on the fixed-frequency vibration table 1, and the vibration sleeve 2 is detachably mounted on the vibration table surface 6.

[0027] A thread groove 7 is provided on the vibration table 6; and a mounting thread 5 whose size matches that of the thread groove 7 is provided on the lower end surface of the vibration sleeve 2, and the vibration sleeve 2 is detachably installed through the cooperation of the mounting thread 5 and the thread groove 7; and the silencer upper cover 3 is detachably installed through the thread structure.

[0028] The working principle of this device is as follows: Device construction and fixture design: This device uses a fixed-frequency vibration table, and a vibration table surface is set on the fixed-frequency vibration table. A stainless steel metal cylinder is installed on the vibration table surface through threads. In order to keep the vibration sensor in a quasi-vertical state during random vibration, the optimal outer diameter and height of the stainless steel metal cylinder are 1.25 times and 2 times of the vibration sensor respectively; at the same time, in order to eliminate the noise generated by random vibration to a large extent, a silencer cover is added to the stainless steel sleeve.

[0029] Place the vibration sensor in a stainless steel sleeve. Due to the vibration of the fixed-frequency vibration table below, the vibration sensor will vibrate randomly in the stainless steel sleeve. Since the sensor and the bottom of the inner tube are both made of metal during vibration, the continuous random collision causes the mechanical energy to be amplified. At this time, the vibration sensor tested inside can generate a large G value of 30-150g, meeting the needs of random vibration in industrial field vibration testing.

[0030] The above-mentioned specific implementation mode is only a preferred embodiment of the present invention and is not intended to limit the implementation of the present invention and the scope of the claims. All equivalent changes and modifications made according to the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A simple vibration device for testing a vibration sensor, characterized in that: It comprises a fixed-frequency vibration table (1), on which a vertical vibration sleeve (2) is installed, and a detachable sound-absorbing upper cover (3) is installed at the upper end of the vibration sleeve (2); The vibration sensor (4) to be tested is placed vertically in the vibration sleeve (2), and the fixed-frequency vibration table (1) drives the vibration sleeve (2) to vibrate, so that the vibration sensor (4) collides randomly up and down in the vibration sleeve (2).

2. A simple vibration device for testing a vibration sensor according to claim 1, characterized in that: The vibration sleeve (2) is configured as a metal stainless steel sleeve.

3. A simple vibration device for testing a vibration sensor according to claim 2, characterized in that: The outer diameter of the vibration sleeve (2) is set to 1.25 times the outer diameter of the vibration sensor (4); and the height of the vibration sleeve (2) is set to 2 times the height of the vibration sensor (4).

4. A simple vibration device for testing a vibration sensor according to claim 3, characterized in that: The fixed-frequency vibration table (1) drives the vibration sleeve (2) to cause the internal vibration sensor (4) to generate a large G value of 30-150g.

5. A simple vibration device for testing a vibration sensor according to claim 1, characterized in that: The fixed-frequency vibration table (1) is provided with a vibration table surface (6), and the vibration sleeve (2) is detachably mounted on the vibration table surface (6).

6. A simple vibration device for testing a vibration sensor according to claim 5, characterized in that: The vibration table (6) is provided with a thread groove (7); and the lower end surface of the vibration sleeve (2) is provided with a mounting thread (5) whose size matches that of the thread groove (7); the vibration sleeve (2) is detachably mounted through the cooperation of the mounting thread (5) and the thread groove (7).

7. A simple vibration device for testing a vibration sensor according to claim 1, characterized in that: The silencer upper cover (3) is detachably installed through a threaded structure.

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