CN114383799A - Sinusoidal vibration clamp for low-voltage circuit breaker - Google Patents
Sinusoidal vibration clamp for low-voltage circuit breaker Download PDFInfo
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- CN114383799A CN114383799A CN202111539850.5A CN202111539850A CN114383799A CN 114383799 A CN114383799 A CN 114383799A CN 202111539850 A CN202111539850 A CN 202111539850A CN 114383799 A CN114383799 A CN 114383799A
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- voltage circuit
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- connecting plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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Abstract
The invention discloses a sinusoidal vibration clamp of a low-voltage circuit breaker, which comprises a fixed seat, wherein a square clamp body is arranged above the fixed seat, two symmetrical side surfaces in the clamp body are connecting plates, two adjacent side surfaces of the connecting plates are provided with an operating hole on one side surface, a side plate is arranged on the other side surface, a silencing hole is arranged on the side plate, a third connecting plate is transversely arranged above the connecting plates and the side plate, and a product mounting hole is arranged on the connecting plates. The invention has reasonable design, can meet the test of a plurality of low-voltage circuit breakers on one vibration test bed, and designs the square clamp body on the base, so that the clamp and a test product are symmetrical in mass distribution, thereby reducing unbalanced load and achieving the effect of more balanced vibration.
Description
Technical Field
The invention relates to the technical field of circuit breaker detection, in particular to a sinusoidal vibration clamp for a low-voltage circuit breaker.
Background
For a low-voltage circuit breaker product, due to the complexity and the severity of the use environment, in order to verify various parameters of the product, such as reliability, service life, environmental adaptability and the like, various real complex environments need to be simulated for testing, wherein various vibration tests are indispensable. Because of the importance of the vibration test in the environmental test, the simulation of the vibration environment verification parameters by the vibration test bed is one of the effective means. The working principle of the vibration table is as follows: a magnetic field is established in the vibration table body by the excitation coil, the excitation coil is connected with a direct-current power supply, and a high magnetic flux is generated in the annular air gap. The moving coil component comprises a table top, a framework and a driving coil, and is suspended in an annular air gap of the vibration table. When an alternating current is passed through the drive coil, an electromagnetic force is generated on the windings of the drive coil, causing the table to reciprocate up and down, the amount of movement of the table being dependent upon the magnitude and frequency of the drive signal from the vibration control instrument and the mass of the extended table (if any), the mass of the load applied and the stiffness of the table suspension. The electric vibration test bed adopted by the applicant, a manufacturer: zuo dongling vibration test instruments ltd, model number of vibration table: ES-10-240 type. The series is a design scheme of Dongling corporation for many years, a driving coil is wound without a framework, and a table top is designed to be structurally made according to the specific stiffness (E/rho value) characteristic of a material, so that the high first-order axial frequency of an active system is guaranteed; the support system of the moving coil adopts a double-guide structure to help improve lateral and rotational rigidity; the support of the load utilizes the characteristics of large bearing capacity and good low-frequency characteristic of the air spring to ensure that the table top has larger bearing capacity and smaller table top waveform distortion degree. As shown in fig. 5 and 6, the table top of the vibration table does not aim at the special fixed position of the circuit breaker, a special clamp must be made for fixing the circuit breaker on the vibration table, the clamp used before is not enough fixed with the table top, so that the polarization of the clamp is caused, the vibration value cannot be conducted to the maximum extent, or the clamp is simple in design, the material specification and other considerations are not enough, so that the clamp is small in size, only a few products can be tested at one time, and the working efficiency is too low.
Disclosure of Invention
The invention aims to provide a sinusoidal vibration clamp for a low-voltage circuit breaker. The invention has reasonable design, and can effectively reduce noise and resonance frequency.
The technical scheme of the invention is as follows: the utility model provides a low-voltage circuit breaker sinusoidal vibration anchor clamps, includes the fixing base, and the fixing base top is equipped with square anchor clamps body, and two sides of symmetry are the connecting plate in the anchor clamps body, and two sides that the connecting plate is adjacent, and the handle hole is left to one of them side, is equipped with the curb plate on another side, is equipped with the bloop on the curb plate, transversely is equipped with third connecting plate above connecting plate and curb plate, be equipped with the product mounting hole on the connecting plate.
Foretell low-voltage circuit breaker sinusoidal vibration anchor clamps, the fixing base bottom surface is circular.
The fixing seat is provided with the hollow part.
The hollow part of the low-voltage circuit breaker sinusoidal vibration clamp is a round hole with the aperture of 30-80 mm.
The low-voltage circuit breaker sinusoidal vibration clamp is characterized in that a silencing hole is formed in the middle of the side plate.
According to the sine vibration clamp for the low-voltage circuit breaker, 1-4 rows of product mounting holes are formed in the connecting plate, 4-8 product mounting holes are formed in each row, the left-right distance between the centers of the product mounting holes in each row is 2-4 cm, and the height distance between the centers of the product mounting holes in the upper row and the lower row is 4-8 cm.
In the sinusoidal vibration clamp for the low-voltage circuit breaker, 2-3 rows of product mounting holes are formed in the connecting plate, 5-6 product mounting holes are formed in each row, the left-right distance between the centers of the product mounting holes in each row is 2.5-3.5 cm, and the height distance between the centers of the product mounting holes in the upper row and the lower row is 5-7 cm.
Has the advantages that: compared with the prior art, the vibration test fixture is reasonable in design, the square fixture body is designed on the base, so that the fixture and a test product are symmetrical in mass distribution, unbalanced load is reduced, and the effect of balancing vibration is achieved. The bottom surface is connected with the vibration test bench, has trilateral erection joint board in all the other five faces, and the test has three connecting plate to be used for the installation of product promptly at every turn, has improved the product quantity of a test. The remaining one side is used for sound attenuation (noise generated by vibration) and the other side is used for mounting operation. The invention has the following advantages:
1. because the low-voltage circuit breaker product is light in weight and can be almost ignored compared with the clamp, the circuit breaker and the clamp are combined to consider the gravity center, in order to avoid causing shaking vibration of the vibration table surface and distort the vibration waveform of the table surface, the gravity center of the clamp and the center of the excitation force of the vibration table are on the same vertical line as far as possible, namely, the gravity center and the center line of the vibration table are overlapped, on the other hand, the stress problem between the clamp and the working table is considered, and in order to uniformly disperse the axial force applied to the clamp during vibration, the bottom surface of the fixed seat is designed to be a circular shape or a regular polygon shape, preferably a circular shape. And determining the position and size of the bottom connecting hole of the fixture fixing seat and the size of the base according to the position and size of the fixing hole of the vibration test table workbench.
2. Because vibration test requires the sinusoidal vibration of test product three direction, for experimental the meeting test requirement, make anchor clamps and test product be symmetrical on mass distribution during anchor clamps design to reduce unbalanced load, consequently the first half design of fixing base is the square, and anchor clamps overall height will be less than the bottom surface diameter, in order to avoid anchor clamps focus to be on the high side, produces great transverse vibration moment. According to theoretical formula
Under the condition that rigidity k keeps unchangeable, quality m is less, and the natural frequency of anchor clamps is higher, is favorable to vibration test's implementation more, in order to increase experimental product quantity, fretworks the square of fixing base to reduce the quality. However, after the cube fretwork, the fixing base can form a cavity with the connecting plate, has increased the contact surface with the air, takes place the extrusion with the air more easily, because high-speed relative motion, because viscous action arouses the gas disturbance, produces the aerodynamic noise when vibration test, therefore anchor clamps must have the amortization design to avoid the noise to operating personnel's harm. Considering all aspects comprehensively, the clamp body is convenient for installing a test product, an installation opening is required to be reserved on one side surface of the clamp body, a connecting plate cannot be installed, air flowability and mass distribution symmetry are considered, therefore, air dissipation holes are designed on the symmetrical side surfaces of the installation opening, air pressure is generated due to asymmetrical design, air flowing speed is increased, noise is reduced by utilizing a resonance sound absorption principle, and the size of the air dissipation holes is determined according to the size of the vibration clamp.
3. The connecting plate is used as a bridge between the clamp body and a test product, the connecting plate and the clamp body must have good assembly sizes, and installation hole sites are uniformly distributed on the connecting plate according to the installation size of the product and considering the requirements of vibration magnitude, test quantity, test spacing and the like. The device is characterized in that 1-4 rows of product mounting holes are formed in the connecting plate, 4-8 product mounting holes are formed in each row, the left-right distance between the centers of the product mounting holes in each row is 2-4 cm, the height distance between the product mounting holes in the upper row and the product mounting holes in the lower row is 4-8 cm, a plurality of products can be tested at one time as far as possible, the ideal test effect of each product can be ensured, and resonance and noise can be reduced.
Drawings
FIG. 1 is a schematic structural view of the invention;
FIG. 2 is a schematic view taken from A-A in FIG. 1;
FIG. 3 is a schematic view of FIG. 1 taken along line B-B;
FIG. 4 is a schematic view of a connection plate configuration;
FIG. 5 is a schematic view of a vibrating table structure;
fig. 6 is a top plan view of the top of the vibration table.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1. The utility model provides a low-voltage circuit breaker sinusoidal vibration anchor clamps, includes fixing base 1, and 1 top of fixing base is equipped with square anchor clamps body, and two sides of symmetry are connecting plate 2 in the anchor clamps body, and two sides that connecting plate 2 is adjacent, and handle hole 3 is left to one of them side, is equipped with curb plate 4 on another side, is equipped with bloop 5 on the curb plate 4, transversely is equipped with third connecting plate 2 above connecting plate 2 and curb plate 4, be equipped with product mounting hole 6 on connecting plate 2.
The bottom surface of the fixed seat 1 is circular or regular polygon, such as regular triangle, square, regular hexagon and the like.
The fixing seat 1 is provided with a hollow part 7. The hollow-out part 7 is a round hole with the aperture of 30-80 mm.
And a silencing hole 5 is formed in the middle of the side plate 4.
The connecting plate 2 is provided with 1-4 rows of product mounting holes 6, each row is provided with 4-8 product mounting holes 6, the left-right distance between the centers of the product mounting holes 6 in each row is 2-4 cm, and the distance between the centers of the product mounting holes 6 in the upper row and the lower row is 4-8 cm.
The working principle is as follows:
fix the anchor clamps body on the shaking table through fixing base 1, utilize operation hole 3 to start the shaking table with the circuit breaker product according to in the product mounting hole 6 of connecting plate 2, utilize the anchor clamps body evenly to transmit every product mounting hole 6 with the vibration of shaking table, accomplish vibration test.
Example 2. The utility model provides a low-voltage circuit breaker sinusoidal vibration anchor clamps, includes fixing base 1, and 1 top of fixing base is equipped with square anchor clamps body, and two sides of symmetry are connecting plate 2 in the anchor clamps body, and two sides that connecting plate 2 is adjacent, and handle hole 3 is left to one of them side, is equipped with curb plate 4 on another side, is equipped with bloop 5 on the curb plate 4, transversely is equipped with third connecting plate 2 above connecting plate 2 and curb plate 4, be equipped with product mounting hole 6 on connecting plate 2.
The bottom surface of the fixed seat 1 is circular.
The fixing seat 1 is provided with a hollow part 7. The hollow-out part 7 is a round hole with the aperture of 50-60 mm.
Preferably, the connecting plate 2 is provided with 2-3 rows of product mounting holes 6, each row is provided with 5-6 product mounting holes 6, the left-right distance between the centers of the product mounting holes 6 in each row is 2.5-3.5 cm, and the distance between the centers of the product mounting holes 6 in the upper row and the lower row is 5-7 cm.
Example 3. The utility model provides a low-voltage circuit breaker sinusoidal vibration anchor clamps, includes fixing base 1, and 1 top of fixing base is equipped with square anchor clamps body, and two sides of symmetry are connecting plate 2 in the anchor clamps body, and two sides that connecting plate 2 is adjacent, and handle hole 3 is left to one of them side, is equipped with curb plate 4 on another side, is equipped with bloop 5 on the curb plate 4, transversely is equipped with third connecting plate 2 above connecting plate 2 and curb plate 4, be equipped with product mounting hole 6 on connecting plate 2.
The bottom surface of the fixed seat 1 is circular.
The fixing seat 1 is provided with a hollow part 7. The hollow-out part 7 is a round hole with the aperture of 55 mm.
Preferably, the connecting plate 2 is provided with 2 rows of product mounting holes 6, each row is provided with 6 product mounting holes 6, the left-right distance between the centers of the product mounting holes 6 in each row is 3 cm, and the distance between the centers of the product mounting holes 6 in the upper row and the lower row is 6 cm.
Claims (7)
1. The utility model provides a low-voltage circuit breaker sinusoidal vibration anchor clamps which characterized in that: including fixing base (1), fixing base (1) top is equipped with square anchor clamps body, and two sides of symmetry are connecting plate (2) in the anchor clamps body, and operating hole (3) are left to two sides that connecting plate (2) are adjacent, one of them side, are equipped with curb plate (4) on another side, are equipped with bloop (5) on curb plate (4), transversely are equipped with third connecting plate (2) above connecting plate (2) and curb plate (4), be equipped with product mounting hole (6) on connecting plate (2).
2. Sinusoidal vibration clamp for low-voltage circuit breakers, according to claim 1, characterized in that: the bottom surface of the fixed seat (1) is circular or regular polygon.
3. Sinusoidal vibration clamp for low-voltage circuit breakers, according to claim 2, characterized in that: the fixing seat (1) is provided with a hollow part (7).
4. Sinusoidal vibration clamp for low-voltage circuit breakers, according to claim 3, characterized in that: the hollow parts (7) are round holes, and the aperture is 30-80 mm.
5. Sinusoidal vibration clamp for low-voltage circuit breakers, according to claim 3, characterized in that: and a silencing hole (5) is formed in the middle of the side plate (4).
6. Sinusoidal vibration clamp for low-voltage circuit breakers, according to claim 1, characterized in that: the connecting plate (2) is provided with 1-4 rows of product mounting holes (6), 4-8 product mounting holes (6) are arranged in each row, the left-right distance between the centers of the product mounting holes (6) in each row is 2-4 cm, and the distance between the center heights of the product mounting holes (6) in the upper row and the lower row is 4-8 cm.
7. Sinusoidal vibration clamp for low-voltage circuit breakers, according to claim 1, characterized in that: the connecting plate (2) is provided with 2-3 rows of product mounting holes (6), each row is provided with 5-6 product mounting holes (6), the left-right distance between the centers of the product mounting holes (6) in each row is 2.5-3.5 cm, and the distance between the centers of the product mounting holes (6) in the upper row and the lower row is 5-7 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111539850.5A CN114383799A (en) | 2021-12-15 | 2021-12-15 | Sinusoidal vibration clamp for low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111539850.5A CN114383799A (en) | 2021-12-15 | 2021-12-15 | Sinusoidal vibration clamp for low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114383799A true CN114383799A (en) | 2022-04-22 |
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ID=81197289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111539850.5A Pending CN114383799A (en) | 2021-12-15 | 2021-12-15 | Sinusoidal vibration clamp for low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114383799A (en) |
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2021
- 2021-12-15 CN CN202111539850.5A patent/CN114383799A/en active Pending
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