CN214793031U - Detection apparatus for eccentric mass distance of eccentric block - Google Patents
Detection apparatus for eccentric mass distance of eccentric block Download PDFInfo
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- CN214793031U CN214793031U CN202120797757.3U CN202120797757U CN214793031U CN 214793031 U CN214793031 U CN 214793031U CN 202120797757 U CN202120797757 U CN 202120797757U CN 214793031 U CN214793031 U CN 214793031U
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- eccentric block
- eccentric
- calibration
- vibration
- fixture
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Abstract
The utility model discloses a detection apparatus for eccentric mass distance of eccentric block is applicable to the eccentric mass distance's of eccentric block detection in vibration machinery such as vibration exciter, vibrating motor, makes eccentric mass install on same vibrating equipment apart from the same eccentric block. The detection device mainly comprises: the vibration isolation device comprises a rotating main body, a driving device, a vibration platform, a machine base, an amplitude detection device and an isolation spring. The utility model discloses a during operation, drive arrangement drives rotatory main part and rotates. When the eccentric mass distance of the calibration eccentric block group needs to be adjusted, the adjustment is realized by changing the included angle between the calibration eccentric blocks, and the size of the eccentric mass distance is determined according to the scales above the arc grooves of the calibration eccentric blocks. The conical surface at the front end of the fixture head is matched with the adjustment of the distance between the fixture seat and the fixture head, so that the eccentric blocks with different inner diameters and different thicknesses can be installed and clamped. And the absorption position of the infrared sensor is changed, so that the vibration parameters of different points of the vibration platform are measured, and the radial and axial eccentric mass distances of the eccentric block to be measured are obtained.
Description
Technical Field
The utility model relates to a detection apparatus for eccentric mass of eccentric block is apart from mainly provides a detection apparatus that is arranged in vibrating machinery such as vibration exciter, vibrating motor eccentric mass of eccentric block is apart from.
Background
The vibration machine is an important component of modern machinery, and important industrial links such as material conveying, screening separation, centrifugal dehydration and the like can be realized by utilizing vibration, so that the vibration machine is widely applied to industrial departments such as coal, metallurgy, mines, electric power, chemical industry and the like. Taking a vibrating screen as an example, the vibration of the vibrating screen mainly depends on the rotation of an eccentric block, the eccentric block is usually fixed on a main shaft of a vibration exciter, a motor drives the main shaft to rotate through a universal coupling, the eccentric block also rotates along with the main shaft when the main shaft rotates, and the centrifugal force generated by the rotating eccentric block becomes the exciting force of the vibration exciter. The eccentric block is an important component of the vibration exciter, and the eccentric mass distance of the eccentric block rotating at high speed during working is directly related to the working stability and the service life of the vibrating screen. The eccentric block often has the problems of unreasonable design or unqualified processing and the like in the design and processing processes, so that the eccentric mass distance of the eccentric block cannot meet the requirements of equipment. Generally, two eccentric blocks are symmetrically installed on a vibrating device at the same time, and when the eccentric mass distances of the two eccentric blocks are inconsistent, abnormal vibration of the vibrating device is caused, noise is generated, and bearing abrasion is accelerated, so that the performance and the service life of the device are seriously influenced. Therefore eccentric mass before the eccentric block dispatches from the factory detects very necessarily, but does not have the device that is used for eccentric mass of eccentric block apart from detecting specially at present, so the utility model discloses a detection device of eccentric block eccentric mass apart from ensures that two eccentric blocks of same equipment have the same eccentric mass apart from, and the device simple structure, operation are convenient, and the test procedure operation is stable, reliable.
SUMMERY OF THE UTILITY MODEL
The utility model provides a detection apparatus for eccentric mass of eccentric block is apart from, carry out eccentric mass apart from detecting to it before eccentric block erection, make eccentric mass apart from the same eccentric block install on same equipment to two eccentric blocks of guarantee same vibrating equipment have the same eccentric mass apart from.
The utility model adopts the following technical proposal: a detection device for eccentric mass distance of an eccentric block mainly comprises a rotating main body, a driving device, a vibration platform, a machine base, an amplitude detection device and a vibration isolation spring.
The rotating main body consists of a bearing seat, a calibration eccentric block group, an eccentric block fixture, a side shaft and a measured eccentric block, the calibration eccentric block group consists of a calibration eccentric block A and a calibration eccentric block B, and the eccentric block fixture consists of a fixture head and a fixture seat. The rotary main body is installed on the vibration platform through the bearing seat, the calibration eccentric block group is connected to the side shaft through a key, the calibration eccentric block group and the measured eccentric block are installed in a reversed phase mode, namely the phase difference between the calibration eccentric block group and the measured eccentric block is 180 degrees, the calibration eccentric block group is symmetrically installed on two sides of the measured eccentric block, the eccentric block fixture is connected to the threaded side of the side shaft of the rotary main body through threads, and the calibration eccentric block A and the calibration eccentric block B are fastened through bolts. The vibration isolation device comprises a metal spring, a spring clamping seat A and a spring clamping seat B. Drive arrangement through the catcher flange with the limit hub connection, universal joint passes through the catcher flange with the motor is connected, the motor is installed on the motor cabinet, the motor cabinet welding is in the frame, the lug welds in pairs the frame both sides, vibration platform with through four between the frame the vibration isolation spring is connected, amplitude detection device fixes through welded mode in the frame, infrared sensor adopts the magnetism seat to adsorb on the sensor mounting bracket, the adjustment infrared sensor is in position on the sensor mounting bracket can realize right the measurement of vibration platform different position vibration parameter.
The working principle of the utility model is as follows: firstly, the eccentric mass distance of the calibration eccentric block group is adjusted to the designed eccentric mass distance of the measured eccentric block, and then the measured eccentric block is clamped in the eccentric block clamp. After the machine is started, the motor drives the side shaft to rotate through the universal coupling, so that the calibration eccentric block group and the tested eccentric block are driven to rotate at the same speed. The amplitude detection system collects vibration parameters of the vibration platform through the infrared sensor to obtain the magnitude of the vibration amplitude A. When the vibration amplitude A is within the allowable range, judging that the measured eccentric block is qualified; if the vibration amplitude A is beyond the allowable range, the deviation of the eccentric mass distance of the measured eccentric block and the designed eccentric mass distance is obtained by the formula of delta mr-MA (wherein delta mr is the deviation value of the eccentric mass distance, M is the vibration reference mass including the mass of the rotating body, the mass of the vibration platform and 1/3 vibration isolation spring, and A is the amplitude of the vibration platform). Adjusting the eccentric mass distance of the calibration eccentric block group to increase delta mr, and if the amplitude of the vibration platform is reduced, indicating that the error of the eccentric mass distance of the measured eccentric block is + delta mr; if the amplitude of the vibration platform is increased, the eccentric mass distance error of the measured eccentric block is-delta mr, and similarly, the eccentric mass distance of the calibrated eccentric block group is adjusted to be reduced by delta mr, and if the amplitude of the vibration platform is decreased, the eccentric mass distance error of the measured eccentric block is-delta mr; if the amplitude of the vibration platform is increased, the eccentric mass distance error of the measured eccentric block is + delta mr, and the radial and axial eccentric mass distances of the measured eccentric block can be obtained by analyzing and calculating according to the vibration data of the vibration platform.
The utility model has the advantages that:
1) the eccentric mass distance is detected before the eccentric blocks are assembled and installed, so that the eccentric blocks with the same eccentric mass distance are installed on the same vibrating equipment, and the fact that the two eccentric blocks of the same vibrating equipment have the same eccentric mass distance is guaranteed. By adopting the method for calibrating the eccentric mass balance, the eccentric mass with larger eccentric mass distance can be detected on the premise of compact structure.
2) The distance between the eccentric block clamps is adjusted, so that the eccentric block clamp can be suitable for detecting eccentric blocks with different inner diameters and different thicknesses.
3) By adjusting the position of the infrared sensor on the sensor mounting frame, the vibration parameters of different positions of the vibration platform can be measured, so that the radial and axial eccentric mass distances of the measured eccentric block are obtained.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the position of a portion of the components of the present invention;
FIG. 3 is a schematic view of the eccentric block fixture of the present invention;
FIG. 4 is a schematic diagram of the structure of the eccentric block calibration set of the present invention;
fig. 5 is a schematic structural view of the driving device of the present invention;
fig. 6 is a schematic view of the structure of the base of the present invention;
fig. 7 is a schematic structural diagram of the amplitude detection device of the present invention;
FIG. 8 is a schematic view of the structure of the shock isolation spring of the present invention;
the reference numbers in the figures denote:
1-a vibration platform; 2-amplitude detection means; 3-a rotating body; 4-a vibration isolation spring; 5-a drive device; 6-a machine base; 7-bearing seat A; 8-calibrating the eccentric block group A; 9-eccentric block fixture; 10-calibrating an eccentric block group B; 11-bearing seat B; 12-side axis A; 13-eccentric block under test; 14-side axis B; 15-a fixture seat; 16-a fixture head; 17-calibrating the eccentric block A; 18-calibrating the eccentric block B; 19-a flange a; 20-universal coupling; 21-a flange B; 22-a motor; 23-a lifting lug; 24-a frame; 25-a motor base; 26-infrared sensor a; 27-a sensor mount; 28-infrared sensor B; 29-a metal spring; 30-spring cassette a; 31-spring clamp B.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific embodiments:
as shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the eccentric mass distance detecting device of the eccentric mass is characterized in that:
the rotating body 3 in fig. 2 is composed of a bearing seat A7, a calibration eccentric block group A8, an eccentric block fixture 9, a calibration eccentric block group B10, a bearing seat B11, a side shaft A12, a measured eccentric block 13 and a side shaft B14. Wherein the bearing seat A7 and the bearing seat B11 are symmetrically arranged on the vibration platform 1, the side shaft A12 and the side shaft B14 are respectively arranged in the bearings of the bearing seat A7 and the bearing seat B11, the calibration eccentric block group A8 and the calibration eccentric block group B10 are symmetrically arranged on the side shaft A12 and the side shaft B14 through key connection, and one side of the side shaft A12 and one side of the side shaft B14 are provided with threads; the eccentric mass clamp 9 of fig. 3 consists of a clamp holder 15 and a clamp head 16. The fixture seat 15 is connected with one side with threads of the side shaft A12, the fixture head 16 is connected with one side with threads of the side shaft B14, the front end of the fixture head 16 is provided with a section of conical surface, the relative positions of the eccentric block fixture 9, the side shaft A12 and the side shaft B14 can be adjusted through the threads, and the conical surface at the front end of the fixture head 16 is matched with the adjustment of the distance between the fixture seat 15 and the fixture head 16, so that the eccentric block fixture 9 can be suitable for clamping eccentric blocks with different thicknesses and different inner diameters.
FIG. 4 shows the calibration eccentric block set A8 and the calibration eccentric block set B10 consisting of a calibration eccentric block A17 and a calibration eccentric block B18. The calibration eccentric block A17 and the calibration eccentric block B18 are provided with arc grooves below, bolts fasten the calibration eccentric block A17 and the calibration eccentric block B18 through the arc grooves, the eccentric mass distances of the calibration eccentric block group A8 and the calibration eccentric block group B10 can be adjusted by adjusting the included angle between the calibration eccentric block A17 and the calibration eccentric block B18, and scales are engraved above the arc grooves of the calibration eccentric block A17 and the calibration eccentric block B18 to facilitate adjustment of the eccentric mass distances.
Fig. 5 shows a drive device 5 comprising a coupling flange a19, a universal joint 20, a coupling flange B21, and a motor 22. The universal coupling 20 is connected with the side shaft B14 through the catcher flange A19, the universal coupling 20 is connected with the motor 22 through the catcher flange B21, and the motor 22 is installed on the motor base 25 through bolts; fig. 6 illustrates the base 6 consisting of a lifting lug 23, a frame 24 and a motor base 25. Wherein the motor base 25 is welded on one side of the frame 24, and the lifting lugs 23 are symmetrically welded on two sides of the frame 24 in pairs; the amplitude detection device 2 of fig. 7 is composed of an infrared sensor a26, a sensor mounting bracket 27, and an infrared sensor B28. The infrared sensor A26 is adsorbed on the upper end of the sensor mounting frame 27, the detection head of the infrared sensor B28 is adsorbed on the lower end of the sensor mounting frame 27, the detection head of the infrared sensor A is arranged downwards, the detection head of the infrared sensor B28 is arranged upwards, and the sensor mounting frame 27 is welded on the rack 24; fig. 8 the isolation spring 4 is composed of a metal spring 29, a spring holder a30, and a spring holder B31. Wherein, the spring clamping seat A30 is fixed on the vibration platform 1 through a bolt, the spring clamping seat B31 is fixed on the frame 24 through a bolt, and the vibration isolation springs 4 are symmetrically arranged between the vibration platform 1 and the frame 24 in pairs.
The utility model discloses a working process realizes like this: starting the device, the motor 22 drives the rotating main body 3 to rotate through the transmission of the universal coupling 20, so as to drive the calibration eccentric block group A8, the calibration eccentric block group B10 and the measured eccentric block 13 to rotate at the same angular speed, and meanwhile, the amplitude detection device 2 monitors the vibration parameters of the vibration platform 1 in real time. When the eccentric mass distance of the calibration eccentric block group A8 (calibration eccentric block group B10) needs to be adjusted, the adjustment is realized by changing the included angle between the calibration eccentric block A17 and the calibration eccentric block B18, and the value of the eccentric distance is determined according to the scales of the calibration eccentric block A17 and the calibration eccentric block B18. The eccentricity of the eccentric block 13 to be measured with different inner diameters and different thicknesses is measured by changing the positions of the fixture seat 15 and the fixture head 16 on the side axis A12 and the side axis B14. By changing the adsorption positions of the infrared sensor A26 and the infrared sensor B28 on the sensor mounting frame 27, the vibration parameters of different positions of the vibration platform 1 are measured.
The above-mentioned embodiments are only descriptions of the preferred embodiments of the present invention, the present invention is not limited to the above-mentioned embodiments, and all kinds of deformation and transformation made by the present invention should be within the protection scope of the present invention.
Claims (5)
1. A detection device for eccentric mass distance of an eccentric block is characterized by comprising a rotating main body, a driving device, a vibration platform, a machine base, an amplitude detection device and an isolation spring;
the rotary main body consists of a bearing seat, a calibration eccentric block group, an eccentric block fixture, a side shaft and a measured eccentric block, the rotary main body is installed on the vibration platform through the bearing seat, the calibration eccentric block group is connected on the side shaft through a key, the calibration eccentric block group and the measured eccentric block are installed in a reversed phase mode, namely the phase difference between the calibration eccentric block group and the measured eccentric block is 180 degrees, and the eccentric block fixture is connected on the threaded side of the side shaft of the rotary main body through threads; the vibration isolation device comprises a driving device, a base, a vibration isolation spring, a spring clamping seat A, a spring clamping seat B, a connecting flange, a side shaft, four vibration isolation springs, a vibration platform, four vibration isolation springs and a motor, wherein the driving device comprises the connecting flange, a universal coupling and a motor seat, the vibration isolation springs comprise metal springs, the spring clamping seat A and the spring clamping seat B, the driving device passes through the connecting flange and the side shaft, the universal coupling passes through the connecting flange and the motor, the motor is installed on the motor seat, the motor seat is welded on the frame, the lifting lugs are welded on two sides of the frame in pairs, the vibration platform is connected with the base through the four vibration isolation springs, and the vibration amplitude detection device is fixed on the frame in a welding mode.
2. The eccentric mass distance detection device of the eccentric block according to claim 1, wherein the calibration eccentric block set comprises a calibration eccentric block A and a calibration eccentric block B, an arc-shaped groove is formed below the calibration eccentric block A and the calibration eccentric block B, scales are engraved on the arc-shaped groove to facilitate adjustment of the eccentric mass distance, a bolt fastens the calibration eccentric block A and the calibration eccentric block B through the arc-shaped groove, and the eccentric mass distance of the calibration eccentric block set can be adjusted by adjusting an included angle between the calibration eccentric block A and the calibration eccentric block B.
3. The eccentric mass distance detection device of the eccentric block as claimed in claim 1, wherein the calibration eccentric block sets are symmetrically installed at both sides of the eccentric block to be detected.
4. The eccentric mass distance detection device of the eccentric block as claimed in claim 1, wherein the eccentric block fixture comprises a fixture head and a fixture seat, the fixture seat is connected with the threaded side of the side shaft A, the fixture head is connected with the threaded side of the side shaft B, and the conical surface at the front end of the fixture head is matched with the adjustment of the distance between the fixture seat and the fixture head, so that the eccentric block fixture can be suitable for the installation and the clamping of eccentric blocks with different thicknesses and different inner diameters.
5. The eccentric mass distance detection device of the eccentric block as claimed in claim 1, wherein the amplitude detection device comprises an infrared sensor A, a sensor mounting frame and an infrared sensor B, the infrared sensor is adsorbed on the sensor mounting frame by a magnetic seat, and the position of the infrared sensor on the sensor mounting frame is adjusted, so that the vibration parameters of the vibration platform at different positions can be measured, and the radial and axial eccentric mass distances of the eccentric block to be detected are obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120797757.3U CN214793031U (en) | 2021-04-19 | 2021-04-19 | Detection apparatus for eccentric mass distance of eccentric block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120797757.3U CN214793031U (en) | 2021-04-19 | 2021-04-19 | Detection apparatus for eccentric mass distance of eccentric block |
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| Publication Number | Publication Date |
|---|---|
| CN214793031U true CN214793031U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120797757.3U Expired - Fee Related CN214793031U (en) | 2021-04-19 | 2021-04-19 | Detection apparatus for eccentric mass distance of eccentric block |
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| Country | Link |
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| CN (1) | CN214793031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199547A (en) * | 2021-12-17 | 2022-03-18 | 大连民族大学 | Special fixture capable of realizing slow change of excitation amplitude for rotor-bearing test bed |
| CN114353829A (en) * | 2021-12-23 | 2022-04-15 | 青岛智腾微电子有限公司 | High-temperature eccentric high-precision rotary table device |
-
2021
- 2021-04-19 CN CN202120797757.3U patent/CN214793031U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199547A (en) * | 2021-12-17 | 2022-03-18 | 大连民族大学 | Special fixture capable of realizing slow change of excitation amplitude for rotor-bearing test bed |
| CN114199547B (en) * | 2021-12-17 | 2024-05-28 | 大连民族大学 | Special fixture capable of realizing slow variation of excitation amplitude for rotor-bearing test bed |
| CN114353829A (en) * | 2021-12-23 | 2022-04-15 | 青岛智腾微电子有限公司 | High-temperature eccentric high-precision rotary table device |
| CN114353829B (en) * | 2021-12-23 | 2023-03-24 | 青岛智腾微电子有限公司 | High-temperature eccentric high-precision rotary table device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |