Active vibration control device

Abstract

The invention relates to an active vibration control device, which belongs to the technical field of vibration control, and comprises a dynamic vibration absorber main body, a device base, an upper adjusting bracket, a movable frame and a positioning underframe, a first band-type brake stepping motor is fixedly mounted on the upper adjusting bracket, and a ball screw is fixedly connected to the driving end of the first band-type brake stepping motor; the ball screw is in threaded connection with a lead screw nut, bearing sliding blocks are fixedly connected to the two sides of the lead screw nut, a limiting rod is fixedly installed on the inner wall of the upper adjusting support, an installation bottom plate is fixedly installed on the bearing sliding blocks, and the dynamic vibration absorber body is connected with the installation bottom plate through screws. The device can be conveniently moved and used in various sites or machines, the suction cup structure can be rapidly attached to the vibration reduction machine or the site ground for vibration reduction treatment, therefore, the influence of vibration on a mechanical instrument is relieved or eliminated, the vibration reduction point position can be adjusted according to the actual effect after installation, and the vibration control effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration control, and particularly to an active vibration control device. Background Art

[0002] Vibration control refers to the use of vibration isolation technology to reduce the vibration transmission rate, the use of vibration damping to weaken the vibration intensity of an object and reduce the sound radiation into space, and the use of a dynamic vibration absorber to transfer and consume the mechanical vibration energy on an additional vibration system. Such technologies are called vibration control. In noise control engineering, vibration control technology is an important aspect. Some precision machinery, precision instruments, and laboratories requiring low noise also need vibration control to avoid the influence of environmental vibration on them.

[0003] Machines are widely used as the prime mover in industry and transportation, and the harm of mechanical vibration is becoming more and more serious. Power machinery such as steam turbines, hydraulic turbines, and motors, transportation tools such as automobiles, trains, ships, and airplanes, as well as machine tools, mining machinery, and construction machinery, etc. are all developing in the direction of high speed and heavy load, and the influence of vibration is becoming increasingly noticeable.

[0004] To reduce the influence of vibration in machinery, the existing control method usually uses a dynamic vibration absorber for vibration control treatment. A dynamic vibration absorber refers to a device that uses a resonance system to absorb the vibration energy of an object to reduce the vibration of the object. Its principle is to attach a mass-spring resonance system to the vibrating object. The reaction force generated by this additional system at resonance can reduce the vibration of the vibrating object. To facilitate the rapid vibration control of the machinery or site in use, an active vibration control device is proposed. It is convenient to move and use in various sites or machinery. Through the sucker structure, it can quickly adhere to the vibration-damping machinery or the ground of the site for vibration-damping treatment, thereby slowing down or eliminating the influence of vibration on mechanical instruments. And after installation, the shock-absorbing points can be adjusted according to the actual effect, so as to further improve the vibration control effect. Summary of the Invention

[0005] The present invention provides an active vibration control device, which solves the problems raised in the above background art. The whole is of a portable structure and is convenient to install on the ground or the surface of machinery. After installation, it can also be moved and adjusted within a certain range, so as to have a better vibration control effect.

[0006] The solution of the present invention to the above technical problems is as follows: A dynamic vibration control device includes a dynamic vibration absorber main body, a device base, an upper adjustment bracket, a moving vehicle frame, and a positioning base frame. The upper adjustment bracket is fixedly installed with a first brake stepping motor. The driving end of the first brake stepping motor is fixedly connected with a ball screw. The ball screw is threadedly connected with a screw nut. Both sides of the screw nut are fixedly connected with load-bearing sliders. The inner wall of the upper adjustment bracket is fixedly installed with a limiting rod. The load-bearing slider is fixedly installed with a mounting base plate. The dynamic vibration absorber main body is connected to the mounting base plate by screws. The device base is installed with an annular bearing base. The device base is rotationally connected to the upper adjustment bracket through the annular bearing base. The device base is fixedly installed with a first hydraulic cylinder and a second hydraulic cylinder. The first hydraulic cylinder is fixedly connected with the moving vehicle frame. The second hydraulic cylinder is fixedly connected with the positioning base frame. The positioning base frame is evenly fixedly installed with positioning suction cups. The positioning suction cups are fixedly communicated with a communicating air pipe. The device base is fixedly installed with a vacuum pump. The vacuum pump is fixedly communicated with a solenoid valve. The solenoid valve is communicated with the communicating air pipe. The upper adjustment bracket is fixedly installed with a support rod. The device base is fixedly installed with a second brake stepping motor. The driving ends of the second brake stepping motor and the support rod are both fixedly installed with engaging gears. The two engaging gears are meshed and connected.

[0007] On the basis of the above technical solution, the present invention can be further improved as follows.

[0008] Further, the ball screw is rotationally connected with the inner wall of the upper adjustment bracket, so that the ball screw can stably rotate on the inner wall of the upper adjustment bracket.

[0009] Further, the load-bearing slider is provided with a limiting hole corresponding to the limiting rod. The inner wall of the limiting hole is slidably connected with the limiting rod, so that the limiting rod can stably bear the load of the load-bearing slider.

[0010] Further, the moving vehicle frame is arranged in a rectangular frame structure, and the moving vehicle frame is installed with moving wheels, so that the moving vehicle frame can drive the device to move.

[0011] Further, multiple groups of the positioning suction cups are provided. The multiple groups of positioning suction cups are arranged in a rectangle. The evenly arranged positioning suction cups can stably position the device.

[0012] Further, the bottom of the device base is of an open type, and the device base is fixedly connected with a handrail frame. The device can be driven to move through the handrail frame.

[0013] Further, the upper adjustment bracket is provided with a strip-shaped hole corresponding to the load-bearing slider. The load-bearing slider passes through the strip-shaped hole and is fixedly connected with the mounting base plate, so that the load-bearing slider can stably drive the mounting base plate and the dynamic vibration absorber main body on its top to move, thereby adjusting the position.

[0014] Furthermore, the receiving gears on both sides are bevel gears.

[0015] Furthermore, the support rod is rotatably connected to the device base.

[0016] The beneficial effects of the present invention are as follows: The present invention provides a movable vibration control device with the following advantages:

[0017] 1. The device on top of the moving wheel can be driven to move through the armrest. After moving to the vibration damping position, the first hydraulic cylinder can be activated to contract, so that the moving vehicle frame and the moving wheels at its bottom can be retracted into the device base. Activating the second hydraulic cylinder can drive the positioning suction cups at the bottom of the positioning chassis to fit the damping area. Starting the vacuum pump, the air in the positioning suction cups can be pumped out through the connecting air pipe and the vacuum pump, so that the positioning suction cups can be stably adsorbed on the damping area. Installing the main body of the dynamic vibration absorber on the top of the mounting base plate can perform vibration damping control on this area;

[0018] 2. Starting the first brake stepper motor to rotate the ball screw can drive the mounting base plate and the main body of the dynamic vibration absorber on its top to adjust the position. Starting the second brake stepper motor can drive the upper adjustment bracket at the top of the support rod to rotate on the top of the annular bearing base, so as to axially adjust the position of the main body of the dynamic vibration absorber, enabling the main body of the dynamic vibration absorber to move within a certain range, thereby optimizing the vibration damping effect;

[0019] 3. Such a movable vibration control device is convenient to move and use in various sites or machines. Through the suction cup structure, it can quickly fit the vibration damping machine or the ground of the site for vibration damping treatment, thereby reducing or eliminating the impact of vibration on mechanical instruments. And after installation, the damping points can be adjusted according to the actual effect, thereby further improving the vibration control effect.

[0020] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following takes the preferred embodiments of the present invention and combines the drawings to describe in detail as follows. The specific implementation manners of the present invention are given in detail by the following embodiments and their drawings. Description of the Drawings

[0021] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a movable vibration control device provided by an embodiment of the present invention;

[0023] Figure 2A schematic structural diagram of a moving state of an active vibration control device provided by an embodiment of the present invention;

[0024] Figure 3 A front view of an active vibration control device provided by one embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of an upper adjustment bracket in an active vibration control device provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of a base of an active vibration control device provided in one embodiment of the present invention as viewed from the bottom.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Power vibration absorber body; 2. Device base; 3. Upper adjustment bracket; 4. No. 1 brake stepper motor; 5. Ball screw; 6. Screw nut; 7. Load-bearing slider; 8. Limit rod; 9. Mounting base plate; 10. Annular bearing base; 11. No. 1 hydraulic cylinder; 12. No. 2 hydraulic cylinder; 13. Moving frame; 14. Moving wheel; 15. Positioning base; 16. Positioning suction cup; 17. Connecting air pipe; 18. Vacuum pump; 19. Solenoid valve; 20. Support rod; 21. No. 2 brake stepper motor; 22. Undertaking gear; 23. Handrail. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1-5 The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] like Figures 1-5 As shown, the present invention provides an active vibration control device, including a dynamic vibration absorber body 1, a device base 2, an upper adjustment bracket 3, a mobile frame 13, and a positioning base 15. The upper adjustment bracket 3 is fixedly installed with a No. 1 brake stepper motor 4, the driving end of the No. 1 brake stepper motor 4 is fixedly connected with a ball screw 5, the ball screw 5 is threadedly connected with a screw nut 6, and both sides of the screw nut 6 are fixedly connected with a load-bearing slider 7. The inner wall of the upper adjustment bracket 3 is fixedly installed with a limit rod 8, and the load-bearing slider 7 is fixedly installed with a mounting base 9. The dynamic vibration absorber body 1 is connected to the mounting base 9 by screws, and the device base 2 is installed with an annular bearing base 10. The device base 2 is connected to the upper adjustment bracket 3 through the annular bearing base 10. Rotating connection, the device base 2 is fixedly installed with a No. 1 hydraulic cylinder 11 and a No. 2 hydraulic cylinder 12, the No. 1 hydraulic cylinder 11 is fixedly connected to the mobile frame 13, the No. 2 hydraulic cylinder 12 is fixedly connected to the positioning base 15, the positioning base 15 is evenly fixedly installed with a positioning suction cup 16, the positioning suction cup 16 is fixedly connected with a connecting air pipe 17, the device base 2 is fixedly installed with a vacuum pump 18, the vacuum pump 18 is fixedly connected with a solenoid valve 19, the solenoid valve 19 is connected with the connecting air pipe 17, the upper adjustment bracket 3 is fixedly installed with a support rod 20, the device base 2 is fixedly installed with a No. 2 brake stepper motor 21, the driving end of the No. 2 brake stepper motor 21 and the support rod 20 are fixedly installed with a receiving gear 22, and the receiving gears 22 on both sides are meshed and connected.

[0033] Preferably, the ball screw 5 is rotatably connected to the inner wall of the upper adjustment bracket 3 , so that the ball screw 5 can stably rotate on the inner wall of the upper adjustment bracket 3 .

[0034] Preferably, a limiting hole is provided in the load-bearing slide block 7 corresponding to the limiting rod 8 , and the inner wall of the limiting hole is slidably connected to the limiting rod 8 , so that the limiting rod 8 can stably bear the load on the load-bearing slide block 7 .

[0035] Preferably, the moving frame 13 is configured as a rectangular frame structure, and the moving frame 13 is provided with moving wheels 14, so that the moving frame 13 can drive the device to move.

[0036] Preferably, a plurality of groups of positioning suction cups 16 are provided, and the plurality of groups of positioning suction cups 16 are arranged in a rectangular shape. The evenly arranged positioning suction cups 16 can stably position the device.

[0037] Preferably, the bottom of the device base 2 is an open type, and the device base 2 is fixedly connected with a handrail frame 23, and the device can be driven to move through the handrail frame 23.

[0038] Preferably, the upper adjustment bracket 3 is provided with a strip-shaped hole corresponding to the load-bearing slider 7, and the load-bearing slider 7 passes through the strip-shaped hole and is fixedly connected with the mounting base plate 9, so that the load-bearing slider 7 can stably drive the mounting base plate 9 and the dynamic vibration absorber main body on its top to move, thereby adjusting the position.

[0039] Preferably, both of the two side receiving gears 22 are bevel gears.

[0040] Preferably, the support rod 20 is rotatably connected with the device base 2.

[0041] The specific working principle and usage method of the present invention are as follows: The device on the top of the moving wheel 14 can be driven to move through the handrail frame 23. After moving to the vibration damping position, the first hydraulic cylinder 11 can be started to contract, so that the moving vehicle frame 13 and the moving wheel 14 at its bottom can be retracted into the device base 2. Starting the second hydraulic cylinder 12 can drive the positioning suction cup 16 at the bottom of the positioning base frame 15 to fit the vibration damping area. Starting the vacuum pump 18, the air in the positioning suction cup 16 can be pumped out through the connecting air pipe 17 and the vacuum pump 18, so that the positioning suction cup 16 can be stably adsorbed on the vibration damping area. Installing the dynamic vibration absorber main body 1 on the top of the mounting base plate 9 can perform vibration damping control on this area. Starting the first brake stepping motor 4 to rotate the ball screw 5 can drive the load-bearing slider 7 to slide on the outer wall of the limiting rod 8 through the screw nut 6, so that the mounting base plate 9 and the dynamic vibration absorber main body 1 on its top can adjust the position. Starting the second brake stepping motor 21 can drive the upper adjustment bracket 3 at the top of the support rod 20 to rotate on the top of the annular bearing base 10, so as to axially adjust the position of the dynamic vibration absorber main body 1, so that the dynamic vibration absorber main body 1 can move within a certain range, thereby optimizing the vibration damping effect.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0043] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention; any ordinary technician in the industry can smoothly implement the present invention as shown in the accompanying drawings of the specification and as described above; however, any minor changes, modifications, and equivalent variations made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An active vibration control device, comprising a dynamic vibration absorber body (1), a device base (2), an upper adjustment bracket (3), a moving frame (13), and a positioning base frame (15), characterized in that: The upper adjustment bracket (3) is fixedly mounted with a No. 1 brake stepper motor (4); the driving end of the No. 1 brake stepper motor (4) is fixedly connected with a ball screw (5); the ball screw (5) is threadedly connected with a screw nut (6); both sides of the screw nut (6) are fixedly connected with a load-bearing slider (7); a limit rod (8) is fixedly mounted on the inner wall of the upper adjustment bracket (3); the load-bearing slider (7) is fixedly mounted with a mounting base (9); the dynamic vibration absorber body (1) is connected to the mounting base (9) by screws; the device base (2) is mounted with an annular bearing base (10); the device base (2) is rotatably connected to the upper adjustment bracket (3) by the annular bearing base (10); the device base (2) is fixedly mounted with a No. 1 hydraulic cylinder (11) and a No. 2 hydraulic cylinder (12); The No. 1 hydraulic cylinder (11) is fixedly connected to the moving frame (13), the No. 2 hydraulic cylinder (12) is fixedly connected to the positioning base frame (15), the positioning base frame (15) is evenly fixedly installed with a positioning suction cup (16), the positioning suction cup (16) is fixedly connected with a connecting air pipe (17), the device base (2) is fixedly installed with a vacuum pump (18), the vacuum pump (18) is fixedly connected with a solenoid valve (19), the solenoid valve (19) is connected with the connecting air pipe (17), the upper adjustment bracket (3) is fixedly installed with a support rod (20), the device base (2) is fixedly installed with a No. 2 brake stepping motor (21), the driving end of the No. 2 brake stepping motor (21) and the support rod (20) are both fixedly installed with a receiving gear (22), and the receiving gears (22) on both sides are meshingly connected.

2. An active vibration control device according to claim 1, characterized in that: The ball screw (5) is rotatably connected to the inner wall of the upper adjustment bracket (3).

3. An active vibration control device according to claim 1, characterized in that: The load-bearing sliding block (7) is provided with a limiting hole corresponding to the limiting rod (8), and the inner wall of the limiting hole is slidably connected to the limiting rod (8).

4. An active vibration control device according to claim 1, characterized in that: The moving frame (13) is configured as a rectangular frame structure, and the moving frame (13) is provided with moving wheels (14).

5. The active vibration control device according to claim 1, characterized in that: The positioning suction cups (16) are provided in multiple groups, and the multiple groups of positioning suction cups (16) are arranged in a rectangular shape.

6. An active vibration control device according to claim 1, characterized in that: The bottom of the device base (2) is arranged to be open, and the device base (2) is fixedly connected to a handrail frame (23).

7. An active vibration control device according to claim 1, characterized in that: The upper adjustment bracket (3) is provided with a strip hole corresponding to the load-bearing slider (7), and the load-bearing slider (7) passes through the strip hole and is fixedly connected to the installation base plate (9).

8. An active vibration control device according to claim 1, characterized in that: The receiving gears (22) on both sides are both bevel gears.

9. The active vibration control device according to claim 1, characterized in that: The support rod (20) is rotatably connected to the device base (2).

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