CN210221441U

CN210221441U - Vibration table

Info

Publication number: CN210221441U
Application number: CN201921124664.3U
Authority: CN
Inventors: Tengbo Ye; 叶腾波; Aijun Cai; 蔡爱军
Original assignee: Suzhou Branch Testing Equipment Ltd Co Projects
Current assignee: Suzhou Branch Testing Equipment Ltd Co Projects
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-03-31
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a vibration table, which comprises a frame, a main body for exciting vibration and a table top for fixing a test piece, wherein a guide shaft is arranged in the main body to limit the motion direction of the table top; the lower part of the main body is provided with a roller which is convenient to move, and a plurality of first air bags are arranged between the rack and the main body so as to reduce the vibration of the main body; the rack is also connected with the main body through a plurality of second air bags, and the second air bags can adjust the distance between the rack and the ground through inflation and deflation; a plurality of third air bags are arranged on the upper surface of the main body, and all the third air bags are in contact with the table top to support the table top; all the third air bags are communicated through the same pipeline so as to reduce the shift of the center of gravity of the table board. The utility model discloses can keep the accuracy of shaking table test result.

Description

Vibration table

Technical Field

The utility model relates to a vibrating equipment field, concretely relates to shaking table.

Background

In the fields of electronics, aviation, automobiles and the like, along with higher requirements on product precision and quality, the requirement on vibration precision is higher and higher, and in order to detect the capability of the device for bearing environmental vibration in the process of assembly, transportation or action execution, the vibration test is utilized to detect the anti-seismic performance.

However, in the prior art, as the degree of factory standardization has been increasing, standardized factories have been becoming popular in order to increase the utilization rate of land resources. In order to ensure the diversity of the test objects of the vibration table, the height of the vibration table needs to be further reduced. However, when the height of the vibration table is reduced, the vibration table cannot rotate through the rotating shaft, so that the vibration isolation performance of the vibration table is reduced in the vibration test process, and the vibration table resonates. Therefore, in the process of testing the vibration table, the vibration table needs to be damped through an external vibration damping air bag, so that the accuracy of a test result is improved.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a shaking table, its accuracy that can keep shaking table test result.

In order to solve the technical problem, the utility model provides a vibration table, which comprises a frame, a main body for exciting vibration and a table top for fixing a test piece, wherein a guide shaft is arranged in the main body to limit the movement direction of the table top; the lower part of the main body is provided with a roller which is convenient to move, and a plurality of first air bags are arranged between the rack and the main body so as to reduce the vibration of the main body; the rack is also connected with the main body through a plurality of second air bags, and the second air bags can adjust the distance between the rack and the ground through inflation and deflation; a plurality of third air bags are arranged on the upper surface of the main body, and all the third air bags are in contact with the table top to support the table top; all the third air bags are communicated through the same pipeline so as to reduce the shift of the center of gravity of the table board.

Furthermore, the upper surface of frame is provided with a plurality of fixed frames, the outer wall of main part is provided with a plurality of butt seats, just the both ends of first gasbag respectively with fixed frame with the butt seat is connected.

Furthermore, a plurality of guide pillars are arranged in the fixed frame along the vertical direction, and the abutting seat is provided with insertion holes for the guide pillars to penetrate through.

Furthermore, all the second air bags are communicated through the same air conveying pipe.

Furthermore, a plurality of supporting plates are arranged on the lower surface of the table top and are uniformly distributed; and the adjacent two support plates form an accommodating space for placing the third air bag.

Furthermore, the third air bag is connected with the vibration main body through a fixed seat, the fixed seat is detachably connected with the vibration main body, and the fixed seat is provided with an air conveying groove for the pipeline to be inserted and arranged.

Furthermore, the lower surface of the table board is provided with a surrounding edge, and the surrounding edge can surround the upper end of all the third air bags.

Further, a protection pad is arranged on the upper surface of the third air bag.

Furthermore, a guide wheel is further arranged in the vibration main body, and the guide wheel is in contact with the outer side wall of the guide shaft.

Further, the ground is provided with a guide rail matched with the roller to limit the moving direction of the vibration table.

The utility model has the advantages that:

the frame is placed on the ground in the process of fatigue testing of the test piece, so that the vibration of the main body can be reduced to improve the precision in testing; when the position of the vibration table needs to be moved, the air pressure in the second air bag is reduced through the deflation of the second air bag, meanwhile, the second air bag can apply upward pulling force to the rack, so that the rack moves upward under the action of the pulling force and is separated from the ground, and then the movement of the vibration table is realized by utilizing the rollers; after moving to a specific position, the second air bag is inflated, so that the pushing force of the second air bag on the machine frame is gradually increased until the machine frame is contacted with the ground.

Drawings

Fig. 1 is an overall schematic view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a side view of the present invention;

fig. 4 is a half sectional view of the present invention.

The reference numbers in the figures illustrate: 1. a frame; 11. a fixed frame; 12. a guide post; 2. a first air bag; 3. a second air bag; 4. a main body; 41. a guide shaft; 42. a guide wheel; 43. a roller; 431. a guide rail; 44. a butting seat; 441. an insertion hole; 5. a third air cell; 51. a fixed seat; 511. a gas transmission groove; 6. a table top; 61. surrounding edges; 62. and a support plate.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, an embodiment of a vibration table according to the present invention includes a frame 1, a main body 4 and a table top 6, wherein the main body 4 is used for providing an exciting force, and the table top 6 is disposed on the main body 4 and can perform a fatigue test under the action of the exciting force. The main part 4 sets up in the top of frame 1, stability when guaranteeing main part 4 vibration through frame 1 to precision when improving the test.

Referring to fig. 1 and 3, the main body 4 is connected to the frame 1 through a plurality of first air bags 2, the upper surface of the frame 1 is correspondingly provided with a fixed frame 11, meanwhile, the outer side wall of the main body 4 is fixedly provided with a butt joint seat 44, two end parts of the first air bags 2 are respectively connected with the fixed frame 11 and the butt joint seat 44, and a plurality of rollers 43 for moving are arranged below the main body 4, so that the height of the inflation and deflation air-conditioning machine frame 1 of the first air bags 2 from the ground can be utilized. The frame 1 is placed on the ground during the fatigue test of the test piece, so that the vibration of the main body 4 can be reduced to improve the precision during the test; when the position of the vibration table needs to be moved, the air pressure in the first air bag 2 is increased by inflating the first air bag 2, and meanwhile, the first air bag 2 applies upward thrust to the fixed frame 11, so that the rack 1 moves upward under the action of the thrust and is separated from the ground, and then the roller 43 is used for realizing the movement of the vibration table. After moving to a specific position, part of the gas in the first gas bag 2 is discharged, so that the supporting force of the first gas bag 2 on the fixed frame 11 is gradually reduced until the frame 1 is in contact with the ground.

Referring to fig. 1, in order to make the air pressures in the plural sets of first air bags 2 substantially the same, all the first air bags 2 in the present embodiment are communicated through the same air delivery pipe. Maintaining the balance of the air pressure in the first air bag 2 can ensure that the effect exerted by the first air bag 2 on the rack 1 is approximately the same, so that the rack 1 is in the same plane, and the stability of the rack 1 when contacting the ground is increased.

Referring to fig. 1 and 3, a plurality of guide posts 12 are vertically disposed inside the fixing frame 11, and an insertion hole 441 is formed in the contact base 44 for the guide posts 12 to penetrate through, so that the movement direction of the frame 1 can be limited by the cooperation of the guide posts 12 and the insertion hole 441. In addition, in order to maintain the accuracy of the position of the vibration table when moving, a guide rail 431 is provided on the ground to be engaged with the roller 43 so that the vibration table can move in the laying direction of the guide rail 431.

Referring to fig. 1 and 3, the frame 11 is also connected to the main body 4 by a plurality of second airbags 3 to absorb vibration of the main body 4 at the time of a test using the second airbags 3. In order to make the force applied to the main body 4 uniform, the second airbags 3 are respectively located at 4 corners of the frame 11. Meanwhile, the second air bag 3 arranged between the main body 4 and the rack 1 can also adjust the height of the rack 1 from the ground, when the position of the vibration table needs to be moved, the air pressure in the second air bag 3 is reduced through the deflation of the second air bag 3, meanwhile, the second air bag 3 can apply upward pulling force to the rack 1, so that the rack 1 moves upward under the action of the pulling force and is separated from the ground, and then the movement of the vibration table is realized by utilizing the roller 43; after moving to a specific position, the second air bag 3 is inflated, so that the thrust of the second air bag 3 on the stander 1 is gradually increased until the stander 1 is in contact with the ground. In order to make the air pressure in the plurality of sets of second air bags 3 substantially the same, all the second air bags 3 are communicated through the same air pipe in the embodiment.

Referring to fig. 1 and 3, in order to improve the stability of the frame 1 during adjustment, the first air bag 2 and the second air bag 3 can be used for adjustment, when the position of the vibration table needs to be moved, the second air bag 3 is deflated and inflated into the first air bag 2, so that the frame 1 moves upwards and is separated from the ground by the pulling force exerted by the first air bag 2 and the pushing force exerted by the second air bag 3 on the fixed frame 11. When the vibration table is moved to a required position, the first air bag 2 is deflated, and the second air bag 3 is inflated, so that the frame 1 is descended until the frame is contacted with the ground.

Referring to fig. 1 and 4, a guide shaft 41 and a guide wheel 42 are provided inside the main body 4, and the guide shaft 41 can limit the moving direction of the table top 6 and transmit an exciting force. The guide wheel 42 is in contact with the outer side wall of the guide shaft 41, so that the direction of movement of the guide shaft 41 can be restricted by the guide wheel 42. Meanwhile, in order to meet the requirements of a standardized factory building to reduce the height and the size of the vibration table, the central air bag can be omitted below the guide shaft 41.

Referring to fig. 1 and 2, the upper surface of the main body 4 is further provided with a plurality of third air cells 5, and all of the third air cells 5 are disposed on the upper surface of the main body 4 and can be in contact with the lower surface of the table top 6 to support the table top 6. All the third air bags 5 are communicated through the same pipeline, so that the pressure inside each third air bag 5 is approximately the same, and the upper end parts of the third air bags 5 are ensured to be approximately positioned in the same plane. The supporting force exerted on the table top 6 upward by the third air bag 5 disposed below the table top 6 can be reduced, so that the pressure exerted on the guide shaft 41 by the table top 6 can be reduced. In the process of carrying out fatigue test on the test piece, when the gravity center of the table top 6 shifts, the gravity of the table top 6 and the test piece is exerted on the third air bag 5, so that the acting force on the guide shaft 41 can be reduced, the bending moment of the guide shaft 41 during movement can be reduced, the service life of the guide shaft 41 is prolonged, the requirement on the precision of the guide shaft 41 can be reduced, and the processing difficulty is reduced.

Referring to fig. 1 and 2, the third air bag 5 is coupled to the main body 4 through the fixing base 51, and the fixing base 51 and the main body 4 are detachably coupled through fastening bolts, thereby facilitating the installation and removal of the third air bag 5. The fixing base 51 is provided with an air delivery groove 511 for inserting a pipeline, thereby facilitating use.

Referring to fig. 1 and 2, the lower surface of the table top 6 is provided with a peripheral edge 61, the peripheral edge 61 can be disposed around the entire third airbag 5, and the peripheral edge 61 can restrict the upper end portion of the third airbag 5, thereby restricting the shift of the position of the third airbag 5 during the test to increase the stability during the test. Meanwhile, the upper surface of the third air bag 5 is provided with a protection pad, and the protection pad can avoid the direct contact between the third air bag 5 and the table top 6, so that the third air bag 5 is protected to a certain extent. The material of the protective pad in this embodiment is preferably rubber.

Referring to fig. 1 and 2, a plurality of support plates 62 are fixedly disposed on the lower surface of the table top 6, and the support plates 62 can be inserted into the main body 4 to transmit an exciting force. All the support plates 62 are uniformly arranged around the axis of the main body 4, and two adjacent support plates 62 form an accommodating space capable of accommodating the third airbag 5. Before the test, the number of the third air bags 5 is selected according to the mass of the test piece, the third air bags 5 are respectively fixed in the accommodating space, and meanwhile, all the third air bags 5 are uniformly distributed relative to the central axis of the main body 4 in order to keep the stress of the table board 6 uniform.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A vibration table is characterized by comprising a frame, a main body for exciting vibration and a table top for fixing a test piece, wherein a guide shaft is arranged in the main body to limit the motion direction of the table top; the lower part of the main body is provided with a roller which is convenient to move, and a plurality of first air bags are arranged between the rack and the main body so as to reduce the vibration of the main body; the rack is also connected with the main body through a plurality of second air bags, and the second air bags can adjust the distance between the rack and the ground through inflation and deflation; a plurality of third air bags are arranged on the upper surface of the main body, and all the third air bags are in contact with the table top to support the table top; all the third air bags are communicated through the same pipeline so as to reduce the shift of the center of gravity of the table board.

2. A vibration table as claimed in claim 1, wherein the upper surface of the frame is provided with a plurality of fixed frames, the outer wall of the main body is provided with a plurality of abutment seats, and both end portions of the first air bag are connected with the fixed frames and the abutment seats, respectively.

3. A vibration table as claimed in claim 2, wherein a plurality of guide posts are vertically disposed in the fixed frame, and the abutting base is formed with insertion holes for the guide posts to pass through.

4. A vibration table as claimed in claim 2, wherein all of said second air cells are connected by the same air pipe.

5. A vibration table as claimed in claim 1, wherein a plurality of support plates are arranged on the lower surface of the table top, and the support plates are uniformly distributed; and the adjacent two support plates form an accommodating space for placing the third air bag.

6. The vibration table of claim 1, wherein the third air bag is connected with the vibration main body through a fixed seat, the fixed seat is detachably connected with the vibration main body, and the fixed seat is provided with an air transmission groove for inserting the pipeline.

7. A vibration table as claimed in claim 1, wherein the lower surface of said table top is provided with a skirt which can be disposed around the upper end of all of said third air cells.

8. A vibration table as claimed in claim 1, wherein the upper surface of said third air cell is provided with a protective pad.

9. A vibration table as claimed in claim 1, wherein a guide wheel is further provided in said vibration body, and said guide wheel is in contact with an outer side wall of said guide shaft.

10. A vibration table as claimed in claim 1, wherein said floor is provided with guide rails cooperating with said rollers to limit the direction of movement of said vibration table.