Vibration table capable of automatically adjusting amplitude

Abstract

The utility model relates to a vibrating table, in particular to a vibrating table capable of automatically adjusting amplitude, which comprises a base, a vibrating frame is elastically arranged at the top of the base, and an amplitude adjusting mechanism of the vibrating frame is arranged at the bottom of the vibrating frame. The adjusting mechanism comprises a threaded sleeve, the threaded sleeve is arranged at the bottom of the vibrating frame, and the threaded sleeve rotates at the bottom of the vibrating frame and slides and extends towards the vibrating frame at the same time; the top of the base is further provided with a transmission structure, and the transmission structure is matched with the adjusting mechanism so as to push the threaded sleeve to the direction of the vibration frame. The roller is designed, the distance between the edge of the top of the roller and the vibration frame can be continuously adjusted upwards to adjust the vibration amplitude, when the vibration amplitude needs to be increased, the roller is upwards adjusted, so that the height of the vibration frame can be increased during revolution, and when the vibration amplitude needs to be reduced, the roller is upwards adjusted. And the roller can be fixed at an initial position or adjusted downwards.

Description

Technical Field

[0001] This utility model relates to a vibration table, specifically a self-adjusting amplitude vibration table. Background Technology

[0002] A vibration table is a device used to generate mechanical vibrations and is widely used in various fields, such as aviation, aerospace, automotive, electronics, shipbuilding, nuclear facilities, weaponry, water conservancy, bridges, and civil engineering. By simulating different vibration environments, a vibration table helps test the performance and reliability of products under vibration conditions.

[0003] Vibration tables can be classified into three main types based on their working principle and energy acquisition method: mechanical, hydraulic, and electric. Mechanical vibration tables use mechanical devices to generate vibration and are generally suitable for low-frequency, large-amplitude tests; hydraulic vibration tables control vibration signals through a hydraulic system and are suitable for high-frequency, high-precision tests; electric vibration tables are driven by an electric motor and are suitable for tests in the medium to high frequency range.

[0004] In existing vibration table machines, a vibration motor is usually installed at the bottom of the vibration frame, which drives the vibration frame to move, and then the vibration table vibrates with the help of springs.

[0005] However, existing vibration tables often adjust the amplitude by adjusting the position of the eccentric blocks. When the two eccentric blocks on the motor output shaft overlap, the amplitude is the largest. When the two eccentric blocks do not overlap at all, the centrifugal force generated will cancel out part of it, thus the amplitude is the smallest.

[0006] However, during adjustment, the position of the eccentric block is often adjusted manually by unscrewing the screws with the help of tools. This adjustment method is slow, and the amplitude is fixed during operation, so there is no effect of adjusting the amplitude while the operation is running.

[0007] Therefore, existing shaking tables still have certain limitations. Summary of the Invention

[0008] The purpose of this invention is to provide a self-adjusting amplitude vibration table to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A self-adjusting amplitude vibration table includes a base, a vibration frame elastically disposed on the top of the base, and an amplitude adjustment mechanism for the vibration frame disposed on the bottom of the vibration frame.

[0011] The adjustment mechanism includes a threaded sleeve, which is disposed at the bottom of the vibration frame. The threaded sleeve extends towards the vibration frame while rotating at the bottom of the vibration frame.

[0012] The base is also provided with a transmission structure at its top. The transmission structure and the adjustment mechanism cooperate with each other to push the threaded sleeve toward the vibrating frame.

[0013] The self-adjusting amplitude vibration table as described above: a spring is provided between the base and the vibration frame, a column is connected to the top of the base, a sleeve is connected to the bottom of the vibration frame, the sleeve is fitted on the surface of the column, the spring is located inside the sleeve and is fitted on the surface of the column, and the column and the sleeve are slidably connected.

[0014] The self-adjusting amplitude vibration table described above: a motor is fixedly installed on the top of the base, and a wheel is fixedly installed at one end of the output shaft of the motor.

[0015] The self-adjusting amplitude vibration table as described above: the transmission structure includes a small bevel gear ring and a large bevel gear. The small bevel gear ring is fixedly mounted on the base. The large bevel gear meshes with the small bevel gear ring. The diameter of the large bevel gear ring is several times that of the small bevel gear ring. A support is also fixedly mounted on the wheel. One end of the support is rotatably connected to a threaded rod through a bearing, and the bottom of the threaded rod is connected to the large bevel gear.

[0016] As described above, the self-adjusting amplitude vibration table has a guide rail fixedly installed on one side of the wheel, and a slide rod is slidably installed on the guide rail, with the slide rod connected to a threaded sleeve.

[0017] The self-adjusting amplitude vibration table as described above: the transmission structure further includes a threaded rod, and the threaded rod is threadedly connected to a threaded sleeve.

[0018] As described above, the self-adjusting amplitude vibration table has a roller rotatably mounted on the slide rod. The roller is located at the bottom of the vibration frame and engages with the bottom surface of the vibration frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are: this utility model is designed with rollers, and the top edge of the rollers can be continuously adjusted upwards to adjust the distance between them and the vibration frame, so as to adjust the vibration amplitude. When it is necessary to increase the vibration amplitude, the rollers are adjusted upwards, so that the height of the vibration frame can be raised during revolution. When it is necessary to reduce the vibration amplitude, the rollers can be fixed in the initial position or adjusted downwards.

[0020] This utility model can also independently design and install the diameter and type of the large bevel gear. By adjusting the diameter ratio between the large bevel gear and the small bevel gear ring, the rotation speed of the threaded rod can be controlled. When it is necessary to extend the adjustment time of the amplitude, the diameter of the large bevel gear can be enlarged, so that the rotation speed of the threaded rod is slowed down, which will also slow down the lifting time of the threaded sleeve and the corresponding lifting speed of the roller will also be slowed down. The same applies to the opposite. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a self-adjusting amplitude vibration table.

[0022] Figure 2 This is a schematic diagram of the structure in another position of the self-adjusting amplitude vibration table.

[0023] Figure 3 This is a front view of the overall structure of a self-adjusting amplitude vibration table.

[0024] Figure 4 This is a schematic diagram of the adjustment mechanism in a self-adjusting amplitude vibration table.

[0025] Figure 5 This is a schematic diagram of the adjustment mechanism in a self-adjusting vibration table from another angle.

[0026] Figure 6 This is a schematic diagram of the structure of the column, spring, and sleeve in a self-adjusting amplitude vibration table.

[0027] In the diagram: 1. Base; 2. Vibration frame; 3. Motor; 4. Wheel; 5. Small bevel gear ring; 6. Large bevel gear; 7. Guide rail; 8. Slide rod; 9. Threaded rod; 10. Threaded sleeve; 11. Roller; 12. Support; 13. Column; 14. Sleeve. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Please see Figures 1-6 As an embodiment of the present utility model, the self-adjusting amplitude vibration table includes a base 1, a vibration frame 2 is elastically provided on the top of the base 1, and an amplitude adjustment mechanism for the vibration frame 2 is provided on the bottom of the vibration frame 2.

[0030] The adjustment mechanism includes a threaded sleeve 10, which is disposed at the bottom of the vibration frame 2. The threaded sleeve 10 extends and slides towards the vibration frame 2 while rotating at the bottom of the vibration frame 2.

[0031] The top of the base 1 is also provided with a transmission structure, which cooperates with the adjustment mechanism to push the threaded sleeve 10 toward the vibrating frame 2.

[0032] In this embodiment, the base 1 and the vibrating frame 2 are elastically connected, so that the vibrating frame 2 can vibrate on the top of the base 1. The transmission structure at the top of the base 1 can drive the threaded sleeve 10 to rotate while lifting the vibrating frame 2 upward, so that the distance between the vibrating frame 2 and the base 1 becomes longer. When the threaded sleeve 10 rotates to the bottom, that is, opposite to the bottom of the vibrating frame 2, the vibrating frame 2 returns to its original position under the combined action of the spring and gravity. The distance between the highest point of the vibrating frame 2 and the lowest point in the initial state increases, and the corresponding vertical vibration distance increases, and the corresponding amplitude also increases.

[0033] As a further embodiment of this utility model, a spring is provided between the base 1 and the vibration frame 2. A column 13 is connected to the top of the base 1, and a sleeve 14 is connected to the bottom of the vibration frame 2. The sleeve 14 is fitted onto the surface of the column 13. The spring is located inside the sleeve 14 and is fitted onto the surface of the column 13. The column 13 and the sleeve 14 are slidably connected.

[0034] In this embodiment, a spring is provided on the top of the base 1. By placing the spring inside the sleeve 14 and on the outer surface of the column 13, when the vibrating frame 2 moves upward, the bottom of the sleeve 14 will compress the spring. After the spring is compressed, it will return to its initial state, thereby causing the vibrating frame 2 to vibrate again, thus causing the vibrating frame 2 to vibrate multiple times.

[0035] As a further embodiment of this utility model, a motor 3 is fixedly installed on the top of the base 1, and a wheel 4 is fixedly installed on one end of the output shaft of the motor 3.

[0036] In this embodiment, when the machine is running, the motor 3 first drives the wheel 4 to rotate via the output shaft;

[0037] The motor 3 is fixedly mounted on the base 1. The vibration of the motor 3 itself, connected to the base 1, will also cause the base 1 to vibrate, which will be transmitted to the vibration frame 2 through the spring, thereby enhancing the vibration effect of the vibration frame 2.

[0038] As a further embodiment of this utility model, the transmission structure includes a small bevel gear ring 5 and a large bevel gear 6. The small bevel gear ring 5 is fixedly mounted on the base 1, and the large bevel gear 6 meshes with the small bevel gear ring 5. The diameter of the large bevel gear 6 is several times that of the small bevel gear ring 5. A support 12 is also fixedly mounted on the wheel 4. One end of the support 12 is rotatably connected to the threaded rod 9 through a bearing, and the bottom of the threaded rod 9 is connected to the large bevel gear 6.

[0039] In this embodiment, the small bevel gear ring 5 is mounted on the base 1, and the axis of the wheel 4 and the small bevel gear ring 5 are on the same straight line. When the large bevel gear 6 revolves around the wheel 4, the large bevel gear 6 also moves on the small bevel gear ring 5, which is the rotation of the large bevel gear 6 itself. During the design and production of the machine, the size and type of the large bevel gear 6 can be appropriately installed according to the time required to adjust the amplitude. When a fast amplitude adjustment is required, the large bevel gear 6 with a small transmission ratio is installed, that is, the diameter of the large bevel gear 6 can be two, three, four times, etc., of the small bevel gear ring 5, with little difference in the overall diameter. When a slow vibration adjustment is required, the diameter of the large bevel gear 6 can be increased, for example, the diameter of the large bevel gear 6 can be five or ten times that of the small bevel gear ring 5.

[0040] By installing large bevel gears 6 of different diameters and types, it is easy to adjust the speed of the vibration.

[0041] As a further embodiment of this utility model, a guide rail 7 is fixedly provided on one side of the wheel 4, and a slide rod 8 is slidably provided on the guide rail 7, and the slide rod 8 is connected to the threaded sleeve 10.

[0042] In this embodiment, when the wheel 4 rotates, it will drive the guide rail 7 and the slide bar 8 to rotate together. The slide bar 8 and the threaded sleeve 10 are also installed together, thereby driving the threaded sleeve 10 to rotate together.

[0043] A guide rail 7 is designed on the slide bar 8, so that the slide bar 8 can slide along the guide rail 7, making the operation of the slide bar 8 more stable.

[0044] As a further embodiment of this utility model, the transmission structure also includes a threaded rod 9, and the threaded rod 9 is threadedly connected to the threaded sleeve 10.

[0045] In this embodiment, when the large bevel gear 6 rotates, it revolves with the wheel 4 and at the same time, the meshing with the small bevel gear ring 5 causes the large bevel gear 6 to rotate on its own axis. The large bevel gear 6 drives the threaded rod 9 to rotate, which in turn drives the threaded sleeve 10 to move. Since the threaded sleeve 10 and the slide rod 8 are installed together, the threaded sleeve 10 can only move up and down, thus causing the threaded sleeve 10 to move upward.

[0046] As the threaded sleeve 10 revolves with the wheel 4, it will also slowly move towards the vibrating frame 2 under the drive of the threaded rod 9, thereby gradually raising the height of the vibrating frame 2. Consequently, the compression of the spring between the base 1 and the vibrating frame 2 will increase, thus increasing the vibration amplitude of the vibration table.

[0047] As a further embodiment of this utility model, a roller 11 is rotatably mounted on the slide rod 8. The roller 11 is located at the bottom of the vibration frame 2 and engages with the bottom surface of the vibration frame 2.

[0048] In this embodiment, as the slide bar 8 follows the threaded sleeve 10 and continuously approaches the bottom of the vibration frame 2, the vibration frame 2 is lifted and pushed upward by the roller 11.

[0049] Here, the roller 11 is installed on the slide bar 8 so that the roller 11 can be rolled to the bottom of the vibration frame 2. The vibration frame 2 is lifted by rolling, thereby reducing the friction between the two, making the roller 11 lift the vibration frame 2 more effectively. Correspondingly, the compression of the spring between the vibration frame 2 and the base 1 will also be greater, thereby increasing the amplitude of the vibration frame 2 and making the vibration effect better.

[0050] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A self-adjusting amplitude vibration table, the self-adjusting amplitude vibration table comprising a base (1), wherein a vibration frame (2) is elastically disposed on the top of the base (1), characterized in that, The bottom of the vibration frame (2) is provided with an amplitude adjustment mechanism for the vibration frame (2); The adjustment mechanism includes a threaded sleeve (10), which is disposed at the bottom of the vibration frame (2). The threaded sleeve (10) rotates and slides towards the vibration frame (2) at the bottom of the vibration frame (2). The base (1) is also provided with a transmission structure at its top. The transmission structure and the adjustment mechanism cooperate with each other to push the threaded sleeve (10) toward the vibrating frame (2).

2. The self-adjusting amplitude vibration table according to claim 1, characterized in that, A spring is provided between the base (1) and the vibration frame (2). A column (13) is connected to the top of the base (1), and a sleeve (14) is connected to the bottom of the vibration frame (2). The sleeve (14) is fitted on the surface of the column (13). The spring is located inside the sleeve (14) and is fitted on the surface of the column (13). The column (13) and the sleeve (14) are slidably connected.

3. The self-adjusting amplitude vibration table according to claim 1, characterized in that, A motor (3) is fixedly installed on the top of the base (1), and a wheel (4) is fixedly installed on one end of the output shaft of the motor (3).

4. The self-adjusting amplitude vibration table according to claim 3, characterized in that, The transmission structure includes a small bevel gear ring (5) and a large bevel gear (6). The small bevel gear ring (5) is fixedly mounted on the base (1). The large bevel gear (6) meshes with the small bevel gear ring (5). The diameter of the large bevel gear (6) is several times that of the small bevel gear ring (5). A support (12) is also fixedly mounted on the wheel disc (4). One end of the support (12) is rotatably connected to the threaded rod (9) through a bearing. The bottom of the threaded rod (9) is connected to the large bevel gear (6).

5. A self-adjusting amplitude vibration table according to claim 3, characterized in that, A guide rail (7) is fixedly provided on one side of the wheel (4), and a slide rod (8) is slidably provided on the guide rail (7), and the slide rod (8) is connected to the threaded sleeve (10).

6. A self-adjusting amplitude vibration table according to claim 1, characterized in that, The transmission structure also includes a threaded rod (9), and the threaded rod (9) is threadedly connected to the threaded sleeve (10).

7. A self-adjusting amplitude vibration table according to claim 5, characterized in that, A roller (11) is rotatably mounted on the slide bar (8). The roller (11) is located at the bottom of the vibration frame (2) and the roller (11) is in contact with the bottom surface of the vibration frame (2).

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