CN216207404U - Force-controlled vibration test bed applied to large test piece - Google Patents
Force-controlled vibration test bed applied to large test piece Download PDFInfo
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- CN216207404U CN216207404U CN202122615545.1U CN202122615545U CN216207404U CN 216207404 U CN216207404 U CN 216207404U CN 202122615545 U CN202122615545 U CN 202122615545U CN 216207404 U CN216207404 U CN 216207404U
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Abstract
A force controlled vibration test stand for large test pieces, comprising: the test piece is arranged on a carrying table board, a force sensor is arranged between a moving coil of the vibration exciter and the carrying table board, and the force sensor is used for transmitting and controlling the magnitude of vibration force; meanwhile, a stabilizing module is further arranged below the carrying table surface and used for supporting the test piece and the carrying table surface and improving negative effects caused by heavy weight of the test piece and the carrying table surface. According to the technical scheme provided by the utility model, the stable module is added on the basis of the conventional rotatable vibration test bed, the stable module has high bearing capacity, the friction between the large test piece and the test table surface is reduced, the vibration force is effectively transferred to the large test piece, the anti-overturning moment is high, and the vibration test of the large test piece is facilitated.
Description
Technical Field
The utility model relates to the field of vibration test devices, in particular to a force-controlled vibration test bed applied to a large test piece.
Background
The vibration test stand is a device for simulating the vibration resistance, reliability and integrity of the structure of a test piece. At present, when the conventional vibration test bed is used for controlling and detecting vibration, sensors such as force sensors, acceleration sensors or displacement sensors are usually adhered to a test bed surface. However, for some relatively large-sized test pieces, the conventional vibration test bed is often negatively affected by the large mass of the test piece when performing the vibration test. The mass of the test piece usually far exceeds the mass of the moving coil of the vibration exciter, so that the vibration transmission effect is poor, the equipment is damaged, and the vibration stroke, the frequency and the acceleration are influenced.
Therefore, it is necessary to design a force-controlled vibration test bed suitable for a large-mass test piece.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a force-controlled vibration test bed applied to a large test piece so as to solve the problems.
The technical scheme adopted by the utility model is as follows:
a force controlled vibration test stand for large test pieces, comprising:
the vibration exciter comprises a support, a rotary vibration exciter and a vibration control device, wherein the rotary vibration exciter is arranged on the support and can be switched between a vertical state and a horizontal state;
when the vibration exciter is in a horizontal state, a moving coil of the vibration exciter is connected with a first carrying table surface, the moving coil of the vibration exciter can drive the first carrying table surface to horizontally vibrate, and the direction of the horizontal vibration is towards and away from the vibration exciter; a first force sensor is connected between the moving coil and the first stage surface;
when the vibration exciter is in a vertical state, a moving coil of the vibration exciter faces upwards, the upper surface of the moving coil is connected with a second carrying table board, and the moving coil can drive the second carrying table board to vertically vibrate; a second force sensor is connected between the moving coil and the second stage surface.
Further specifically, a first stabilizing module is arranged below the first carrying platform surface;
the first stabilizing module comprises a fixing plate and a plurality of rolling parts fixed on the fixing plate, the lower surface of the first carrying table surface is abutted against the rolling parts, and the fixing plate is fixed on the support.
Further specifically, the rolling member includes the rotation axis, overlaps and establishes rotatable gyro wheel on the rotation axis, the both ends of rotation axis are all fixed on the gyro wheel seat, the gyro wheel seat is fixed on the fixed plate.
More specifically, the number of the rolling elements is more than or equal to 2, and the rolling elements are distributed on the fixing plate in M rows and N columns, wherein M and N are natural numbers, and M x N is more than or equal to 2.
Further specifically, a second stabilizing module abuts against the lower side of the second stage surface;
the second stabilizing modules are a plurality of groups of air springs and air spring support frames corresponding to the air springs one by one, the air springs are arranged on the air spring support frames, and the second loading table top is connected to the upper surfaces of the air springs.
More specifically, the number of the air springs is not less than 3 and is uniformly distributed below the second stage surface along a circumference.
Further specifically, the air spring support frame can be fixed on the end face of the vibration exciter facing the second carrying platform face.
Further specifically, when the vibration exciter is located in a vertical state, a moving coil of the vibration exciter is connected with the second force sensors through the transfer plate, and the second force sensors are uniformly distributed on the transfer plate along a circumference.
Further specifically, the number of the second force sensors is not less than 3.
More specifically, when the vibration exciters are in a horizontal state, the number of the first force sensors is not less than 2.
The utility model has the following beneficial effects:
according to the technical scheme provided by the utility model, the stable module is added on the basis of the conventional rotatable vibration test bed, the stable module has high bearing capacity, the friction between the large test piece and the test table surface is reduced, the vibration force is effectively transferred to the large test piece, the anti-overturning moment is high, and the vibration test of the large test piece is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a force-controlled vibration test bed when a vibration exciter is in a horizontal state;
FIG. 2 is a schematic view of a first stabilization module;
FIG. 3 is a top view of a first stabilization module;
FIG. 4 is a structural diagram of a force-controlled vibration test bed when a vibration exciter is in a vertical state;
FIG. 5 is a schematic view of a second stabilizing module;
fig. 6 is a top view of a second stabilization module.
Wherein: 1-test piece, 2-support, 3-vibration exciter, 41-horizontal connector, 42-transfer plate, 51-first loading table surface, 52-second loading table surface, 61-first force sensor, 62-second force sensor, 7-first stabilizing module, 71-fixing plate 71, 72-rolling piece, 7211-rotating shaft, 7212-roller, 7213-roller seat, 8-second stabilizing module, 81-air spring and 82-air spring mounting seat.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
If the utility model is described in terms of orientations (e.g., up, down, left, right, front, back, outside, inside, etc.), the orientation involved needs to be defined, for example, "for clarity of presentation of the positions and orientations described within the utility model, with reference to the operator of the instrument, the end proximal to the operator being the proximal end and the end distal to the operator being the distal end. "or defined with reference to the paper surface, the refrigerator depth direction, and the like. Of course, if the positional relationship between the two is defined by cross-reference at the time of the subsequent description, it may not be defined here.
As shown in fig. 1 and 4, the present invention provides a force-controlled vibration test bed applied to a large test piece 1, the force-controlled vibration test bed including: the vibration exciter comprises a support 2 and a rotatable vibration exciter 3 mounted on the support 2, wherein the vibration exciter 3 can be switched between a vertical state and a horizontal state;
the test piece 1 is arranged on a carrying table surface, a force sensor is arranged between a moving coil of the vibration exciter 3 and the carrying table surface, and the force sensor is used for transmitting and controlling the magnitude of vibration force;
meanwhile, a stabilizing module is further arranged below the carrying table surface and used for supporting the weight of the test piece 1 and the carrying table surface and improving the negative influence on the vibration test caused by the large weight of the test piece 1 and the carrying table surface.
Specifically, as shown in fig. 1, when the exciter 3 is in a horizontal state, the moving coil of the exciter 3 is connected to the first stage surface 51 through the horizontal connector 41, and the moving coil of the exciter 3 can drive the first stage surface 51 to perform horizontal vibration in a direction toward and away from the exciter 3.
A first force sensor 61 is connected between the horizontal connector 41 and the first stage surface 51, said first force sensor 61 being adapted to measure the force between the moving coil and the first stage surface 51.
The first force sensors 61 are not less than 2 in number and are evenly distributed between the horizontal connector 41 and the first stage surface 51 for uniform transmission of the vibration force and accurate measurement of the result.
A first stabilizing module 7 is arranged below the first stage surface 51, and the first stage surface 51 can move along with the first stabilizing module 7 in the horizontal vibration direction.
Fig. 2 and 3 show an embodiment of the first stabilizing module 7.
The first stabilizing module 7 includes a fixing plate 71 and a plurality of rolling members 72 fixed on the fixing plate 71, the lower surface of the first stage surface 51 abuts against the rolling members 72, and the first stage surface 51 can slide on the upper surfaces of the rolling members 72. The fixing plate 71 is fixed to the support 2.
The rolling member 72 includes rotation axis 7211, the cover is established rotatable gyro wheel 7212 on the rotation axis 7211, the both ends of rotation axis 7211 are fixed on gyro wheel seat 7213, but the direction of rolling of gyro wheel is unanimous with the vibration direction.
The roller seat 7213 is provided with mounting holes through which the roller seat 7213 is fixed to the fixing plate 71. Further, the roller holder 7213 and the fixing plate 71 may be coupled by bonding, welding, integral casting, or the like.
In addition, the rolling member 72 may be a roller fixed at both ends, a ball fixed at the lower end, or the like, as long as the friction coefficient is small, which facilitates the movement of the test piece 1 and the first stage surface 51.
Furthermore, in order to make the stress more uniform, the number of the rolling elements 72 is greater than or equal to 2, and the rolling elements are distributed on the fixing plate 71 in M rows and N columns, wherein M and N are natural numbers, and M x N is greater than or equal to 2.
During operation, the movable coil of vibration exciter 3 is the vibration of horizontal direction, drives through horizontal connector 41 first objective table face 51 motion, first objective table face 51 drives the test piece 1 motion of being fixed in on it, and under the effect of the power, smooth relative motion takes place for first stabilizing module 7 of test piece 1 and below, first force sensor 61 can detect and feedback the vibrational force.
As shown in fig. 4, when the exciter 3 is in the vertical state, the moving coil of the exciter 3 faces upward, the moving coil of the exciter 3 is connected to the second stage surface 52 through the transmission plate 42, and the moving coil can drive the second stage surface 52 to vibrate in the vertical direction.
A second force sensor 62 is connected between the moving coil and the second stage surface 52, the second force sensor 62 being adapted to measure the force between the moving coil and the second stage surface 52.
The number of the second force sensors 62 is not less than 3 for uniform transmission of vibration force and accurate measurement of the result, and the second force sensors 62 are uniformly distributed on the transfer plate 42 along one circumference.
The second stabilizing module 8 abuts against the lower part of the second stage surface 52, and the second stage surface 52 can move vertically along with the second stabilizing module 8.
As shown in fig. 5 and 6, the second stabilizing modules 8 are a plurality of groups of air springs 81 and air spring support frames 82 corresponding to the air springs 81 one by one, and the air springs 81 have the advantages of effectively limiting the amplitude, avoiding resonance, preventing impact, adapting to various loads, being easy to control, and the like.
The air spring 81 is disposed on the air spring support bracket 82, and the second stage surface 52 is attached to the upper surface of the air spring 81.
Furthermore, the number of the air springs 81 is not less than 3, and the air springs are uniformly distributed below the second stage surface 52 along a circumference, so that the arrangement mode is stable in structure, and the vibration force is transmitted uniformly.
The air spring support 82 is fixed to the end face of the exciter 3 facing the second stage surface 52, and in this embodiment, the air spring support 82 is fixed to the upper cover of the exciter 3.
During operation, the vibration of vertical direction is done to the movable coil of vibration exciter 3, drives through transfer plate 42 the motion of second objective table face 52, second objective table face 52 drives the test piece 1 motion of being fixed in on it, and under the cushioning effect of second stable module 8, the motion of test piece 1 is steady, second force sensor 62 can detect and feedback the vibrational force.
According to the technical scheme provided by the utility model, the stabilizing module is added on the basis of the conventional rotatable vibration test bed, has a large bearing capacity, reduces the friction between the large test piece 1 and the test table surface, effectively transmits the vibration force to the large test piece 1, has high anti-overturning moment and is more beneficial to the vibration test of the large test piece 1.
Meanwhile, the stabilizing module is applied to the rotatable vibration exciter 3 and the supporting support 2, so that the manufacturing cost and space of the vibration test bed are saved, the time for replacing the test bed is reduced, and the flexibility is higher.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a be applied to force control vibration test platform of large-scale test piece which characterized in that includes:
the vibration exciter comprises a support (2), a rotatable vibration exciter (3) mounted on the support (2), and a vibration exciter (3) capable of being switched between a vertical state and a horizontal state;
when the vibration exciter (3) is in a horizontal state, a moving coil of the vibration exciter is connected with a first carrying platform surface (51), the moving coil of the vibration exciter (3) can drive the first carrying platform surface (51) to horizontally vibrate, and the direction of the horizontal vibration is towards and away from the vibration exciter (3); a first force sensor (61) is connected between the moving coil and the first stage surface (51);
when the vibration exciter (3) is in a vertical state, a moving coil of the vibration exciter (3) faces upwards, a second carrying platform surface (52) is connected to the upper surface of the moving coil, and the moving coil can drive the second carrying platform surface (52) to vertically vibrate; a second force sensor (62) is connected between the moving coil and a second stage surface (52).
2. The force-controlled vibration test bed applied to a large test piece according to claim 1, characterized in that:
a first stabilizing module (7) is arranged below the first carrying platform surface (51);
the first stabilizing module (7) comprises a fixing plate (71) and a plurality of rolling pieces (72) fixed on the fixing plate 71, the lower surface of the first carrying table top (51) is abutted to the rolling pieces (72), and the fixing plate (71) is fixed on the support (2).
3. The force-controlled vibration test bed applied to a large test piece according to claim 2, characterized in that:
the rolling member (72) includes rotation axis (7211), the cover is established rotatable gyro wheel (7212) on rotation axis (7211), the both ends of rotation axis (7211) are all fixed on gyro wheel seat (7213), gyro wheel seat (7213) are fixed on fixed plate (71).
4. The force-controlled vibration test bed applied to a large test piece according to claim 2, characterized in that:
the number of the rolling members (72) is more than or equal to 2, and the rolling members are distributed on the fixing plate 71(71) in M rows and N columns, wherein M and N are natural numbers, and M x N is more than or equal to 2.
5. The force-controlled vibration test bed applied to a large test piece according to claim 1, characterized in that:
a second stabilizing module (8) abuts against the lower part of the second carrying platform surface (52);
the second stabilizing module (8) comprises a plurality of groups of air springs (81) and air spring support frames (82) corresponding to the air springs one by one, the air springs (81) are arranged on the air spring support frames (82), and the second loading table top (52) is connected to the upper surfaces of the air springs (81).
6. The force-controlled vibration test bed applied to the large test piece according to claim 5, wherein: the number of the air springs (81) is not less than 3, and the air springs are uniformly distributed below the second carrying table surface (52) along a circumference.
7. The force-controlled vibration test bed applied to the large test piece according to claim 5, wherein: the air spring support frame (82) can be fixed on the end face, facing the second carrying platform face (52), of the vibration exciter (3).
8. The force-controlled vibration test bed applied to a large test piece according to claim 1, characterized in that: when the vibration exciter (3) is located in a vertical state, a moving coil of the vibration exciter (3) is connected with the second force sensor (62) through the transfer plate, and the second force sensors (62) are uniformly distributed on the transfer plate along a circumference.
9. The force-controlled vibration test bed applied to the large test piece according to claim 5, wherein: the number of the second force sensors (62) is not less than 3.
10. The force-controlled vibration test bed applied to a large test piece according to claim 2, characterized in that: when the vibration exciters (3) are positioned in a horizontal state, the number of the first force sensors (61) is not less than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122615545.1U CN216207404U (en) | 2021-10-29 | 2021-10-29 | Force-controlled vibration test bed applied to large test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122615545.1U CN216207404U (en) | 2021-10-29 | 2021-10-29 | Force-controlled vibration test bed applied to large test piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216207404U true CN216207404U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122615545.1U Active CN216207404U (en) | 2021-10-29 | 2021-10-29 | Force-controlled vibration test bed applied to large test piece |
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| Country | Link |
|---|---|
| CN (1) | CN216207404U (en) |
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2021
- 2021-10-29 CN CN202122615545.1U patent/CN216207404U/en active Active
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