CN218271294U - Vibration putting test bed - Google Patents
Vibration putting test bed Download PDFInfo
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- CN218271294U CN218271294U CN202220831131.4U CN202220831131U CN218271294U CN 218271294 U CN218271294 U CN 218271294U CN 202220831131 U CN202220831131 U CN 202220831131U CN 218271294 U CN218271294 U CN 218271294U
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Abstract
The invention discloses a vibration putting test bed, and belongs to the field of ground test devices. The invention provides a vibration launching test bed, wherein the vibration exciters in the vertical direction and the horizontal direction share one mounting table surface, horizontal direction and vertical direction vibration switching can be realized without moving a test piece, a port is positioned below the mounting table surface, direct mounting tests of hanging products are facilitated, the mounting table surface can be completely locked to realize non-displacement launching, the use efficiency of the vibration test bed is improved, and the application range of the vibration test bed is expanded.
Description
Technical Field
The invention discloses a vibration putting test bed, and belongs to the field of ground test devices.
Background
The vibration test bed is a common test device, is used for simulating the vibration environment of products, and has wide application in watersheds such as aerospace, automobiles, machinery, buildings, earthquakes and the like. At present, a common vibration test bed test piece mounting interface is mostly positioned above a vibration test bed, the form is convenient for mounting the test piece with the interface below the test piece for testing, and the application direction of the exciting force is consistent with that of the test piece in work. However, for a test piece with a mounting interface above the test piece, such as an airplane hanger, a special fixture needs to be designed for switching during testing so as to change the application direction of the exciting force. Under normal conditions, the switching clamp is heavy, and a large amount of thrust of the vibration table is consumed frequently, so that the transmission efficiency of the exciting force is influenced.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a vibration putting test bed, which can realize the excitation force steering of the vibration test bed so as to facilitate the test of a test piece with an installation interface not below the test piece.
The technical scheme of the invention is as follows:
the utility model provides a vibration input test bench, it includes vibration exciter 1A, vibration exciter two 1B, ball joint bearing one 2A, ball joint bearing two 2B, installation table surface 3, direction switching mechanism 4, be provided with the interface of being connected with vibration exciter two 1B above the installation table surface 3, one side of horizontal direction is provided with the interface of being connected with vibration exciter one 1A, four angles of installation table surface 3 are provided with two risers respectively and are used for being connected with direction switching mechanism 4, vibration exciter one 1A horizontal installation is on the base, and link to each other with installation table surface 3 through ball joint bearing one 2A, vibration exciter two 1B is installed on the base perpendicularly, and link to each other with installation table surface 3 through ball joint bearing two 2B, direction switching mechanism 4 installs on the base and links to each other with installation table surface 3, vibration exciter one 1A provides the vibration excitation of horizontal direction for putting in the vibration test bench, vibration exciter two 1B provides the vibration excitation of vertical direction for the vibration input test bench, ball joint bearing one 2A transmits the vibration excitation of horizontal direction for installation table surface 3, ball joint bearing two 2B will the vibration exciter, vibration exciter 4 transmits the excitation for switching mechanism is used for switching excitation.
The direction switching mechanism 4 comprises a horizontal jackscrew 4A, a horizontal linear bearing 4B, an L-shaped connecting plate 4C, a vertical jackscrew 4D, a vertical linear bearing 4E, an air bag 4F and a C-shaped support 4G, wherein the vertical linear bearing 4E and the vertical jackscrew 4D are installed at an opening of the C-shaped support 4G, one end of the L-shaped connecting plate 4C is installed on the vertical linear bearing 4E, the L-shaped connecting plate 4C can move up and down under the constraint of the vertical linear bearing 4E to drive the installation table top 3 to move up and down, and when the vibration exciter II 1B vibrates, exciting force can be transmitted to the installation table top 3 through the ball joint bearing II 2B in the vertical direction to realize the vibration in the vertical direction;
the other end of the L-shaped connecting plate 4C is mounted on the horizontal linear bearing 4B, a horizontal jackscrew 4A and the horizontal linear bearing 4B are mounted on a vertical plate of the mounting table-board 3, the L-shaped connecting plate 4C supports the mounting table-board 3 through the horizontal linear bearing 4B, the mounting table-board 3 can move in the horizontal direction along the horizontal linear bearing 4B, and when the vibration exciter 1A vibrates, the exciting force can be transmitted to the mounting table-board 3 through the ball joint bearing 2A, so that the vibration in the horizontal direction is realized; when the horizontal jackscrew 4A is screwed into the direction switching mechanism 4 completely, the L-shaped connecting plate 4C can be locked at the horizontal position, and the installation table top 3 can be locked in the horizontal direction.
The 4 direction switching mechanisms 4 are installed on the base and connected with four corners of the installation table top 3, and are used for supporting the installation table top 3 and realizing the restraint and decoupling of the installation table top 3 in the horizontal and vertical directions.
One end of the L-shaped connecting plate 4C connected with the vertical linear bearing 4E extends outwards to the cavity of the C-shaped support 4G, air bags 4F are respectively arranged in the cavity of the C-shaped support 4G and above and below the L-shaped connecting plate 4C, the L-shaped connecting plate 4C can be driven to move up and down by adjusting the pressure of the air bags 4F, and then the resetting and shock absorption functions of the mounting table top 3 are realized.
When the vibration in the horizontal direction is carried out, the horizontal jackscrews 4A in the horizontal direction are all screwed out, the decoupling in the horizontal direction is realized, the vertical jackscrews 4D in the vertical direction are all screwed in, the movement of the L-shaped connecting plate 4C in the vertical direction is limited, the transverse vibration of the mounting table top 3 is reduced, and the directional operation can be carried out when the vibration in the vertical direction is carried out.
The horizontal jackscrew 4A and the vertical jackscrew 4D are all screwed in, so that the locking of the mounting table top 3 in all directions is realized, the test bed is protected, and the reaction force of sudden release and ejection of the upward load during the drop test is borne.
The second vibration exciter 1B is in an inverted installation state, so that the airborne suspension launching device is directly connected with the installation table top 3 through the switching clamp.
The mounting table 3 adopts a honeycomb structure to reduce the system load of the vibration exciter.
The invention has the advantages that: the invention provides a vibration launching test bed, which can realize the vibration force steering of the vibration test bed so as to be convenient for the test of a test piece with an installation interface not below the test piece, and meanwhile, for an airborne suspension launching device, the device can change the installation mode of the vibration test of the traditional airborne suspension launching device and abandon a cage type clamp, so that the vibration force transmission is more efficient, and the test boundary is more real.
Drawings
FIG. 1 is a schematic view of a vibration launch test stand;
FIG. 2 is a schematic view of a direction switching mechanism;
wherein, 1A is a vibration exciter I, 1B is a vibration exciter II, 2A is a ball joint bearing I, 2B is a ball joint bearing II, 3 is an installation table surface, 4 is a direction switching mechanism, 4A is a horizontal jackscrew, 4B is a horizontal linear bearing, 4C is an L-shaped connecting plate, 4D is a vertical jackscrew, 4E is a vertical linear bearing, 4F is an air bag, 4G is a C-shaped support
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a vibration input test bench, it includes vibration exciter 1A, vibration exciter two 1B, ball joint bearing one 2A, ball joint bearing two 2B, installation table surface 3, direction switching mechanism 4, be provided with the interface of being connected with vibration exciter two 1B above the installation table surface 3, one side of horizontal direction is provided with the interface of being connected with vibration exciter one 1A, four angles of installation table surface 3 are provided with two risers respectively and are used for being connected with direction switching mechanism 4, vibration exciter one 1A horizontal installation is on the base, and link to each other with installation table surface 3 through ball joint bearing one 2A, vibration exciter two 1B is installed on the base perpendicularly, and link to each other with installation table surface 3 through ball joint bearing two 2B, direction switching mechanism 4 installs on the base and links to each other with installation table surface 3, vibration exciter one 1A provides the vibration excitation of horizontal direction for putting in the vibration test bench, vibration exciter two 1B provides the vibration excitation of vertical direction for the vibration input test bench, ball joint bearing one 2A transmits the vibration excitation of horizontal direction for installation table surface 3, ball joint bearing two 2B will the vibration exciter, vibration exciter 4 transmits the excitation for switching mechanism is used for switching excitation.
The direction switching mechanism 4 comprises a horizontal jackscrew 4A, a horizontal linear bearing 4B, an L-shaped connecting plate 4C, a vertical jackscrew 4D, a vertical linear bearing 4E, an air bag 4F and a C-shaped support 4G, wherein the vertical linear bearing 4E and the vertical jackscrew 4D are installed at an opening of the C-shaped support 4G, one end of the L-shaped connecting plate 4C is installed on the vertical linear bearing 4E, the L-shaped connecting plate 4C can move up and down under the constraint of the vertical linear bearing 4E to drive the installation table top 3 to move up and down, and when the vibration exciter II 1B vibrates, exciting force can be transmitted to the installation table top 3 through the ball joint bearing II 2B in the vertical direction to realize the vibration in the vertical direction;
the other end of the L-shaped connecting plate 4C is mounted on the horizontal linear bearing 4B, a horizontal jackscrew 4A and the horizontal linear bearing 4B are mounted on a vertical plate of the mounting table-board 3, the L-shaped connecting plate 4C supports the mounting table-board 3 through the horizontal linear bearing 4B, the mounting table-board 3 can move in the horizontal direction along the horizontal linear bearing 4B, and when the vibration exciter 1A vibrates, the exciting force can be transmitted to the mounting table-board 3 through the ball joint bearing 2A, so that the vibration in the horizontal direction is realized; when the horizontal jackscrew 4A is completely screwed into the direction switching mechanism 4, the L-shaped connecting plate 4C can be locked at a horizontal position, and the installation table top 3 can be locked in the horizontal direction.
The 4 direction switching mechanisms 4 are installed on the base and connected with four corners of the installation table top 3, and are used for supporting the installation table top 3 and realizing the restraint and decoupling of the installation table top 3 in the horizontal and vertical directions.
One end of the L-shaped connecting plate 4C connected with the vertical linear bearing 4E extends outwards to the cavity of the C-shaped support 4G, air bags 4F are respectively arranged in the cavity of the C-shaped support 4G and above and below the L-shaped connecting plate 4C, the L-shaped connecting plate 4C can be driven to move up and down by adjusting the pressure of the air bags 4F, and then the resetting and shock absorption functions of the mounting table top 3 are realized.
When the vibration in the horizontal direction is carried out, the horizontal jackscrews 4A in the horizontal direction are all screwed out, the decoupling in the horizontal direction is realized, the vertical jackscrews 4D in the vertical direction are all screwed in, the movement of the L-shaped connecting plate 4C in the vertical direction is limited, the transverse vibration of the mounting table top 3 is reduced, and the directional operation can be carried out when the vibration in the vertical direction is carried out.
The horizontal jackscrew 4A and the vertical jackscrew 4D are all screwed in, so that the locking of the mounting table top 3 in all directions is realized, the test bed is protected, and the reaction force of sudden release and ejection of the upward load during the drop test is borne.
The implementation process is as follows:
and screwing out the horizontal jackscrew 4A and the vertical jackscrew 4D, mounting the test piece, and adjusting the pressure of the air bag 4F to enable the mounting table-board 3 to be positioned in the middle. When the vibration in the vertical direction is performed, the horizontal jackscrews 4A (the vertical jackscrews 4D) are all screwed in to prop against the L-shaped connecting plate 4C, so that the movement of the mounting table top 3 in the horizontal direction is limited.
Open the vibration exciter 1B of vertical direction, the exciting force is given for mounting table face 3 through the ball joint bearing 2B of vertical direction, and execute the vibration for the test piece through mounting table face 3, because the horizontal movement of mounting table face 3 has been restricted in whole the twisting of horizontal jackscrew 4A, test piece 3 can only carry out vertical vibration, the ball joint bearing 2 of horizontal direction has played the decoupling zero effect of horizontal direction vibration exciter 1 with mounting table face 3 simultaneously, prevent that the vibration exciter 1 of horizontal direction from damaging.
After the vertical direction vibration, with the whole twists of perpendicular jackscrew 4D, withstand L type connecting plate 4C, restriction mount table face 3 is at the vertical direction motion, horizontal jackscrew 4A is whole to be twisted out, mount table face 3 can be at the horizontal direction motion, open the vibration exciter 1A of horizontal direction, the exciting force transmits for mount table face 3 through the ball joint bearing 2A of horizontal direction, and give the test piece through mount table face 3 and shake, because the vertical motion of mount table face 3 has been restricted in the whole twists of perpendicular jackscrew 4D, the test piece can only carry out horizontal vibration, the ball joint bearing 2 of vertical direction has played the decoupling zero effect of horizontal direction vibration exciter 1 with mount table face 3 simultaneously, prevent that vertical direction's vibration exciter 1 from damaging.
After the vibration is finished, the horizontal jackscrew 4A is completely screwed in, the movement of the mounting table top 3 in the horizontal direction is limited, the test piece is released or ejected by gravity, and due to the locking action of the horizontal jackscrew 4A and the vertical jackscrew 4D, the test bed cannot be damaged by the reaction force of sudden load release and ejection.
The second vibration exciter 1B is in an inverted installation state, so that the airborne suspension launching device is directly connected with the installation table top 3 through the switching clamp.
The mounting table-board 3 adopts a honeycomb structure to reduce the system load of the vibration exciter.
Example one
The second vibration exciter 1B is in an inverted installation state, so that the airborne suspended launching device can be directly connected with the installation table top 3 through the switching clamp, the cage clamp of the vibration test of the traditional airborne suspended launching device is abandoned, the transmission of the exciting force is more efficient, and the test boundary is more real.
The airborne suspension launching device vibration test is mostly in a long strip shape because of the test piece, the suspended object has large mass and volume, and the table top of the conventional vibration table is vertical and upward, so the vibration test is completed by a cage-type fixture with openings at the front end and the rear end, the airborne suspension launching device is installed at the top in the cage, and when the heading and the lateral test are carried out, the excitation force transmission effect is poor, a large amount of thrust of the vibration table is consumed, the control effect is quite unsatisfactory, the cage-type fixture has limited optimizable degree because of the particularity of the using method. With the installation state of vibration exciter two 1B adoption inversion, can save cage anchor clamps, directly hang emitter with the machine and pass through anchor clamps and install on mounting table face 3 for excitation force transmission is more high-efficient, and experimental border is truer, and experimental control effect is better simultaneously.
Example two
The installation table-board 3 adopts a honeycomb structure, has high strength and light weight, can effectively reduce the system load of the vibration exciter, can not select a conventional aluminum-magnesium alloy plate because of the limitation of the system structure, and can reduce the weight and the system load of the vibration exciter while enhancing the structure by adopting the honeycomb structure.
Claims (6)
1. The utility model provides a vibration releasing test bed, a serial communication port, it includes vibration exciter one (1A), vibration exciter two (1B), ball joint bearing one (2A), ball joint bearing two (2B), installation mesa (3), direction switching mechanism (4), be provided with the interface of being connected with vibration exciter two (1B) above installation mesa (3), one side of horizontal direction is provided with the interface of being connected with vibration exciter one (1A), four angles of installation mesa (3) are provided with two risers respectively and are used for being connected with direction switching mechanism (4), vibration exciter one (1A) horizontal installation is on the base, and link to each other with installation mesa (3) through ball joint bearing one (2A), two (1B) vertical installation are on the base, and link to each other with installation mesa (3) through ball joint bearing two (2B), direction switching mechanism (4) are installed on the base and are linked to each other with installation mesa (3), vibration exciter one (1A) provides the vibration excitation of horizontal direction for the vibration releasing test bed, vibration exciter two (1B) provide the vibration exciter of vertical direction for the vibration releasing test bed, ball joint bearing one (2) transfers the vibration exciter excitation direction for the installation mesa (3) transmission of the vertical excitation direction of vibration exciter (2) for the installation mesa (3), the installation mesa (2) of bearing excitation mechanism.
2. The vibration launching test bed as claimed in claim 1, characterized in that the direction switching mechanism (4) is composed of a horizontal jackscrew (4A), a horizontal linear bearing (4B), an L-shaped connecting plate (4C), a vertical jackscrew (4D), a vertical linear bearing (4E), an air bag (4F) and a C-shaped support (4G), wherein the vertical linear bearing (4E) and the vertical jackscrew (4D) are installed at the opening of the C-shaped support (4G), one end of the L-shaped connecting plate (4C) is installed on the vertical linear bearing (4E), the L-shaped connecting plate (4C) can move up and down under the constraint of the vertical linear bearing (4E) to drive the mounting table top (3) to move up and down, when the vibration exciter II (1B) vibrates, the exciting force can be transmitted to the mounting table top (3) through the vertical ball joint bearing II (2B) to realize the vertical vibration, and when the vertical jackscrew (4D) is completely screwed into the direction switching mechanism (4), the L-shaped connecting plate (4C) can be locked at the vertical position to further play a role in locking the mounting table top (3); the other end of the L-shaped connecting plate (4C) is installed on the horizontal linear bearing (4B), a horizontal jackscrew (4A) and the horizontal linear bearing (4B) are installed on a vertical plate of the installation table-board (3), the L-shaped connecting plate (4C) supports the installation table-board (3) through the horizontal linear bearing (4B), the installation table-board (3) can move in the horizontal direction along the horizontal linear bearing (4B), and when the vibration exciter I (1A) vibrates, the exciting force can be transmitted to the installation table-board (3) through the ball joint bearing I (2A), so that the vibration in the horizontal direction is realized; when the horizontal jackscrew (4A) is completely screwed into the direction switching mechanism (4), the L-shaped connecting plate (4C) can be locked at a horizontal position, and the effect of locking the mounting table top (3) in the horizontal direction is achieved.
3. A vibration launch test stand according to claim 1, characterized in that 4 direction switching mechanisms (4) are mounted on the base and connected to the four corners of the mounting table (3) for supporting the mounting table (3) and for enabling the horizontal and vertical constraint and decoupling of the mounting table (3).
4. A vibration launch test stand according to claim 1, characterized in that the end of the L-shaped connecting plate (4C) connected to the vertical linear bearing (4E) extends outwards into the cavity of the C-shaped support (4G), in the cavity of the C-shaped support (4G) and above and below the L-shaped connecting plate (4C) are respectively provided with an air bag (4F), by adjusting the pressure of the air bag (4F), the L-shaped connecting plate (4C) can be driven to move up and down, and the resetting and shock absorption functions of the mounting table top (3) are further realized.
5. A vibration launch test stand according to claim 1, wherein the second vibration exciter (1B) is mounted upside down so that the airborne suspended launcher is directly connected to the mounting table (3) through the adapter fixture.
6. A vibration-launch test stand according to claim 1, characterized in that the mounting table (3) is of honeycomb type structure to reduce the system load of the vibration exciter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220831131.4U CN218271294U (en) | 2022-04-07 | 2022-04-07 | Vibration putting test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220831131.4U CN218271294U (en) | 2022-04-07 | 2022-04-07 | Vibration putting test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218271294U true CN218271294U (en) | 2023-01-10 |
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ID=84706772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220831131.4U Active CN218271294U (en) | 2022-04-07 | 2022-04-07 | Vibration putting test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218271294U (en) |
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2022
- 2022-04-07 CN CN202220831131.4U patent/CN218271294U/en active Active
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