Vibration assembly

Abstract

The invention provides a vibration assembly, and relates to the technical field of tobacco mechanical equipment. A vibration assembly comprises a box body, two driving shafts, two sets of cam supports, two connecting rods, two fixing rods and a driving assembly, and the two ends of the two driving shafts are rotationally connected to the box body through bearings. Through cooperative arrangement of the adjusting groove, the limiting assembly and the connecting piece, an operator can precisely fix the distance between the connecting rod and the fixing rod by sliding the positions of the guide shafts at the two ends of the connecting rod in the adjusting groove in combination with a screw rod and a locking nut of the limiting assembly, so that the oscillation stroke of the mounting plate is changed; the vibrating and scattering height can be flexibly adjusted according to different physical characteristics such as the size and compactness of cut tobacco balls, the problem that part of cut tobacco balls cannot be effectively scattered due to fixed height or cut tobacco is broken due to excessive vibration is solved, the cut tobacco sorting uniformity is improved, waste of cut tobacco raw materials is reduced, and the raw material quality of cigarette production is guaranteed.

Description

Technical Field

[0001] This application relates to the field of tobacco machinery and equipment technology, and in particular to a vibration component. Background Technology

[0002] In the cigarette production process, the quality of tobacco directly affects the quality of cigarettes and the consumer's smoking experience. However, due to the physical properties of tobacco itself and various factors in the production process, such as cutting, drying, and blending, the tobacco may clump together. Current technology typically uses an air separator to sort the tobacco and an oscillating dispersing structure to disperse the sorted clumps, thereby reducing waste of raw materials. However, the oscillating dispersing structure still has some problems: the height at which the levers on the oscillating frame can raise and lower for dispersing is fixed, making it difficult to adapt to the dispersing needs of different tobacco clumps. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a vibration component that, through the cooperation of an adjustment groove, a limiting component, and a connecting piece, allows the operator to precisely fix the distance between the connecting rod and the fixed rod by sliding the guide shafts at both ends of the connecting rod within the adjustment groove, combined with the screw and locking nut of the limiting component. This changes the oscillation stroke of the mounting plate and allows for flexible adjustment of the oscillation and dispersion height according to different physical characteristics such as the size and compactness of the tobacco clumps. This avoids the problem of some tobacco clumps not being effectively dispersed or the tobacco breaking due to excessive oscillation caused by a fixed height, thereby improving the uniformity of tobacco sorting, reducing waste of tobacco raw materials, and ensuring the quality of raw materials for cigarette production.

[0004] This application provides the following technical solution: A vibration assembly includes a housing, two drive shafts, two sets of cam supports, two connecting rods, two fixed rods, and a drive assembly.

[0005] Both ends of the two drive shafts are rotatably connected to the housing via bearings, and two cams are fixedly connected to each of the two drive shafts, with the two sets of cams arranged symmetrically.

[0006] Both sets of cam supports are equipped with cam bearings, and the cams are installed inside the cam bearings. Both sets of cam supports are provided with adjustment grooves.

[0007] Both ends of the two connecting rods are provided with connectors, and the connectors are slidably connected in the adjustment groove. There are mounting plates arranged at equal intervals between the two connecting rods, and the two ends of the mounting plates are respectively installed on the two connecting rods.

[0008] The two ends of the fixed rod are respectively fixedly connected to the two cam supports. A reinforcing rod is provided between the two fixed rods, and both ends of the reinforcing rod are fixedly connected to the fixed rod. At least one limiting component is provided on the fixed rod, and the position of the connecting rod in the slide groove is adjusted by the limiting component.

[0009] The drive assembly is mounted on the housing and is used to drive the two drive shafts to rotate synchronously.

[0010] In some embodiments, the connector includes a guide shaft slidably connected in an adjustment groove, one end of the guide shaft being fixedly connected to a connecting rod, and a locking bolt being threaded onto the guide shaft.

[0011] In some embodiments, a retaining ring is slidably connected to the locking bolt, and the retaining ring abuts against the outer surface of the cam support.

[0012] In some embodiments, the limiting component includes a first through hole formed on the fixed rod and a second through hole formed on the connecting rod, wherein the first through hole and the second through hole are matched.

[0013] In some embodiments, the limiting assembly further includes a screw, the two ends of which pass through a first through hole and a second through hole respectively and extend to the top of the fixing rod and the bottom of the connecting rod. Two buffer sleeves are slidably connected to the screw, the two buffer sleeves being located below the connecting rod and above the fixing rod respectively.

[0014] In some embodiments, two locking nuts are threaded to both ends of the screw, and the connecting plate and the fixing plate are respectively located between the two sets of locking nuts.

[0015] In some embodiments, the drive assembly includes a motor mounted on a housing, two drive shafts each having a drive wheel mounted on them and the two drive wheels being connected in a driving relationship, and the output shaft of the motor being connected to either drive shaft via a coupling.

[0016] In some embodiments, the drive wheel is a belt pulley, and the drive wheel is located outside the housing; the two drive wheels are connected by a belt.

[0017] In some embodiments, the drive wheel is a sprocket, and the drive wheel is located outside the housing; the two drive wheels are connected by a chain.

[0018] In some embodiments, the drive wheel is a synchronous wheel, and the drive wheel is located outside the housing. The two drive wheels are connected by a synchronous belt.

[0019] The embodiments of this application have the following advantages: This application provides a vibration component. Through the coordinated arrangement of an adjustment groove, a limiting component, and a connecting piece, the operator can precisely fix the distance between the connecting rod and the fixed rod by sliding the guide shafts at both ends of the connecting rod within the adjustment groove, combined with the screw and locking nut of the limiting component. This changes the oscillation stroke of the mounting plate, allowing for flexible adjustment of the oscillation and dispersion height according to different physical characteristics such as the size and compactness of the tobacco clumps. This avoids the problem of some tobacco clumps not being effectively dispersed or the tobacco breaking due to excessive oscillation caused by a fixed height, thereby improving the uniformity of tobacco sorting, reducing tobacco waste, and ensuring the quality of raw materials for cigarette production.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the vibration component of this application is shown.

[0023] Explanation of key component symbols: 1-Drive shaft; 2-Cam bracket; 3-Connecting rod; 4-Fixing rod; 5-Adjusting groove; 6-Cam; 7-Cam bearing; 8-Bearing; 9-Screw; 10-Buffer sleeve; 11-Locking nut; 12-Connector; 13-Reinforcing rod. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In existing technologies, air classifiers are typically used to sort tobacco shreds, and an oscillating dispersing structure is used to disperse the sorted tobacco shreds, thereby reducing the waste of tobacco raw materials. However, the oscillating dispersing structure still has some problems: the height at which the levers on the oscillating frame can be raised and lowered to disperse the tobacco shreds is fixed, making it difficult to adapt to the dispersing needs of different tobacco shreds.

[0030] like Figure 1 As shown, to solve the above-mentioned technical problems, this application provides a vibration assembly, which includes a housing, two drive shafts 1, two sets of cam supports 2, two connecting rods 3, two fixing rods 4, and a drive assembly. This vibration assembly has a reasonable structural design and stable operation, and can be used to vibrate and disperse materials such as tobacco clumps. It is particularly suitable for tobacco sorting and loosening processes in the tobacco industry, and can also be extended to other industrial scenarios requiring flexible, adjustable reciprocating vibration.

[0031] Both ends of the two drive shafts 1 are rotatably connected to the housing via bearings 8. Two cams 6 are fixedly connected to each drive shaft 1, and the two sets of cams 6 are symmetrically arranged. As the core component for power transmission, the drive shaft 1 achieves a low-friction, high-precision rotational connection with the housing via precision bearings 8, ensuring smooth power transmission. The cams 6 are rigidly fixed to the drive shafts 1 using key connections, interference fits, or welding, ensuring that the cams 6 rotate synchronously with the shafts without relative slippage. The symmetrical arrangement of the two sets of cams 6 helps balance inertial forces during operation, reduces overall vibration, and improves the stability and service life of the equipment.

[0032] This housing can be enclosed or open, or it can be a support. Bearings 8 connect the two drive shafts 1 to the housing for rotation, with the housing only serving to support the drive shafts 1. As the mounting base and load-bearing structure of the entire vibration assembly, the housing's structure can be flexibly selected according to the actual application scenario: an enclosed housing effectively prevents dust and splashes, suitable for complex or dusty environments; an open housing facilitates observation of the internal operating status and routine maintenance; if installation space is limited or integration into other equipment is required, it can be simplified into a support frame composed of several supports. Regardless of the form, the core function of the housing is to reliably support the drive shafts 1 through the bearing seats and ensure the parallelism and coaxiality of the two drive shafts 1, thus laying the foundation for the precise movement of the cam 6.

[0033] The two sets of cams 6 have their protrusions facing the same direction, requiring them to rotate synchronously. This design ensures that the driven component (cam support 2) driven by the cams 6 can achieve synchronous and unidirectional reciprocating motion, avoiding structural jamming or uneven force due to phase difference. The synchronous rotation relies on the drive assembly described later, thereby ensuring the consistency of the motion trajectories on both sides, making the oscillation action coordinated and effective.

[0034] Both sets of cam supports 2 are equipped with cam bearings 8, and cams 6 are installed within the cam bearings 8. Both sets of cam supports 2 have adjustment grooves 5. The cam support 2 serves as a key transitional component for converting the rotational motion of cam 6 into linear or reciprocating oscillating motion. The cam bearings 8 (usually needle roller bearings or sliding bearings) embedded within it are tightly fitted to the outer contour of cam 6. Cam 6 is interference-fitted within the cam bearings 8, allowing it to continuously push the cam bearings 8 and cam supports 2 through its eccentric contour as cam 6 rotates, thereby driving the cam support 2 to perform a predetermined circular reciprocating oscillating motion. The adjustment grooves 5 are located along a specific direction (usually vertical or the direction of movement) of the cam support 2, providing an adjustable stroke for the installation position of the connecting rod 3. This is one of the key structural features for achieving adjustable oscillation amplitude in this design.

[0035] Both ends of the two connecting rods 3 are provided with connecting parts 12, and the connecting parts 12 are slidably connected in the adjusting groove 5. Equally spaced mounting plates are arranged between the two connecting rods 3, and the two ends of the mounting plates are respectively mounted on the two connecting rods 3. The connecting rod 3 is the backbone component that transmits oscillating motion and forms the mounting plane. The connecting parts 12 at both ends can slide along the adjusting groove 5 on the cam support 2, thereby changing the distance of the connecting rod 3 relative to the rotation center of the cam during initial installation or when adjustment is needed. The two connecting rods 3 are rigidly connected by multiple equally spaced mounting plates, forming a strong integral frame structure. The multiple mounting plates together constitute a stable mounting surface with a large surface area, used for directly mounting actuators such as paddles, scrapers, and screens, or for bearing the material to be oscillated. This structure ensures the uniform transmission of oscillating power and the consistency of movement at various points on the mounting surface.

[0036] Two connecting rods 3 are connected by mounting plates and reciprocate in a circular oscillating motion using the mounting surface formed by multiple mounting plates. When the cam support 2 is driven by the cam 6 to reciprocate, the power is transmitted to the two connecting rods 3 through the connecting piece 12, thereby driving the entire mounting surface formed by the mounting plates to perform a synchronous reciprocating oscillating motion with a trajectory similar to a circle or ellipse. Compared with simple linear vibration, this composite oscillation mode can produce a more effective rolling, scattering, and dispersing effect on materials, and is especially suitable for loosening viscous or agglomerated materials.

[0037] The two ends of the fixed rod 4 are respectively fixedly connected to the two cam supports 2. A reinforcing rod 13 is provided between the two fixed rods 4, and both ends of the reinforcing rod 13 are fixedly connected to the fixed rod 4. The fixed rod 4 is provided with at least one limiting component, which is used to adjust the position of the connecting piece 12 on the connecting rod 3 in the slide groove. The fixed rod 4 is an auxiliary component that connects the two cam supports 2 and increases the rigidity and stability of the overall structure. Its two ends are fixedly connected to the cam supports 2 and arranged parallel to the connecting rod 3. The reinforcing rod 13 added between the two fixed rods 4 further forms a stable truss structure, which effectively resists the lateral torsional force and bending stress generated during oscillation, prevents the cam supports 2 from undergoing relative deformation, and ensures motion accuracy. The limiting component provided on the fixed rod 4 is the core mechanism for adjusting and finally locking the position of the connecting rod 3. The operator can use the limiting component to firmly lock the relative position of the connecting piece 12 with the fixed rod 4 after it slides along the adjusting groove 5 to the predetermined position, thereby accurately fixing the oscillation stroke (i.e., amplitude) of the mounting surface.

[0038] The drive assembly is mounted on the housing and is used to drive the two drive shafts 1 to rotate synchronously. The drive assembly provides the power source for the entire vibration system and ensures that the two drive shafts 1 rotate strictly synchronously, which is a prerequisite for achieving symmetrical and stable oscillation.

[0039] Preferably, the connecting member 12 includes a guide shaft slidably connected within the adjusting groove 5. One end of the guide shaft is fixedly connected to the connecting rod 3, and a locking bolt is threaded onto the guide shaft. In the specific configuration of the connecting member 12, the guide shaft, as the shaft portion of the sliding pair, cooperates with the inner wall of the adjusting groove 5 to provide precise guidance for the movement of the connecting rod 3 and prevent its sway. The locking bolt is used to temporarily lock the guide shaft in a certain position in the adjusting groove 5 during initial position adjustment, facilitating subsequent fine-tuning and final fixation.

[0040] Furthermore, a retaining ring is slidably connected to the locking bolt, and the retaining ring abuts against the outer surface of the cam support. The retaining ring, fitted onto the locking bolt, generates axial pressure when the bolt is tightened. When initial fixation of the connecting rod 3 is required, the locking bolt is tightened, causing the retaining ring to press tightly against the outer surface of the cam support 2, achieving temporary fixation through friction. This structure facilitates single-person operation, allowing for fine-tuning of the position before final tightening.

[0041] Preferably, the limiting component includes a first through hole on the fixed rod 4 and a second through hole on the connecting rod 3, wherein the first through hole and the second through hole are matched. When the connecting rod 3 is adjusted to the required height via the connecting member 12, the second through hole on it should be aligned with the corresponding first through hole on the fixed rod 4. The matching of the through holes is the basis for achieving a rigid connection.

[0042] When there is more than one limiting component, it is necessary to ensure that the limiting components are arranged at equal intervals to guarantee the stability of the supporting force. Multiple limiting components are distributed at equal intervals along the length direction of the fixed rod 4 and the connecting rod 3, which can evenly bear the dynamic load transmitted from the connecting rod 3 during oscillation, avoid excessive force at a single point leading to structural deformation or connection failure, and ensure that the entire mounting surface remains flat and stable during oscillation.

[0043] The first and second through holes have the same diameter and are positioned on the same vertical horizontal line. This ensures that the connecting screw 9 can pass through smoothly and achieves precise, gapless positioning of the connecting rod 3 and the fixing rod 4.

[0044] Furthermore, the limiting component also includes a screw 9, with its two ends passing through the first and second through holes respectively, extending above the fixing rod 4 and below the connecting rod 3. Two buffer sleeves 10 are slidably connected to the screw 9, located below the connecting rod 3 and above the fixing rod 4, respectively. The screw 9 serves as the core fastener for connection and locking. The buffer sleeves 10 are typically made of highly elastic, high-damping materials such as rubber or polyurethane, and are fitted onto the screw 9 and positioned between the connecting rod 3 and the nut, and between the fixing rod 4 and the nut. During oscillation, the buffer sleeves 10 effectively absorb and attenuate high-frequency micro-amplitude vibrations, reducing rigid impacts and noise between metal parts, while allowing for minor alignment errors, protecting the threaded pair from loosening, and extending the component's service life.

[0045] Preferably, two locking nuts 11 are threaded to both ends of the screw 9, and the connecting plate and the fixing plate are respectively located between the two sets of locking nuts 11. The locking nuts 11 (usually used in conjunction with flat washers and spring washers) are screwed into the screw 9 from the top and bottom, and the connecting rod 3, the buffer sleeve 10, and the fixing rod 4 are pressed together into a whole by applying a locking force. By adjusting the tightening position of the upper and lower locking nuts 11, the clamping force can be precisely controlled, and the relative position of the connecting rod 3 and the fixing rod 4 can be completely fixed in the end.

[0046] Furthermore, the drive assembly includes a motor mounted on the housing, and transmission wheels are mounted on both drive shafts 1, with the two transmission wheels being connected in a transmission manner. The output shaft of the motor is connected to either drive shaft 1 via a coupling. The drive assembly typically consists of a motor (such as a variable frequency motor for easy speed adjustment), a coupling, a driving transmission wheel, a driven transmission wheel, and a transmission medium. The motor drives one drive shaft 1 (the driving shaft) to rotate via the coupling, and the transmission wheel on that shaft drives the transmission wheel on the other drive shaft 1 (the driven shaft) to rotate synchronously via the transmission medium, thereby achieving precise synchronization between the two shafts.

[0047] There are three embodiments of the connection method for the transmission wheel: That is, the transmission wheel is a belt pulley, and the transmission wheel is located outside the housing. The two transmission wheels are connected by a belt. When using belt drive, the structure is simple, the cost is low, the transmission is smooth and can buffer and absorb vibration, and it can slip under overload to provide protection. However, attention must be paid to the tension and protection of the belt.

[0048] That is, the drive wheel is a sprocket, and the drive wheel is located outside the housing. The two drive wheels are connected by a chain. When using chain drive, the power transmission is large, the transmission ratio is accurate, and the environmental adaptability is stronger than that of belt drive, but good lubrication is required and attention should be paid to the noise during operation.

[0049] That is, the transmission wheel is a synchronous wheel, and the transmission wheel is located outside the housing. The two transmission wheels are connected by a synchronous belt. The use of synchronous belt drive combines the smoothness of belt drive and the slip-free advantage of chain drive, which can ensure a strict synchronization relationship, and requires no lubrication, making maintenance simple. It is the preferred solution for applications with high precision requirements.

[0050] By adjusting the groove 5, the limiting component, and the connecting piece 12, the operator can precisely fix the distance between the connecting rod 3 and the fixed rod 4 by sliding the guide shafts at both ends of the connecting rod 3 within the adjusting groove 5, combined with the screw 9 and locking nut 11 of the limiting component. This changes the oscillation stroke of the mounting plate, allowing for flexible adjustment of the oscillation and dispersion height according to the size, compactness, and other physical characteristics of the tobacco clumps. This avoids the problem of some tobacco clumps not being effectively dispersed or excessive oscillation causing tobacco breakage due to a fixed height, thereby improving the uniformity of tobacco sorting, reducing tobacco waste, and ensuring the quality of raw materials for cigarette production. This adjustable mechanism is ingeniously designed and easy to operate, greatly enhancing the adaptability of the vibration component to different process conditions and the consistency of processing effects.

[0051] Working principle: When the motor starts, its output shaft drives the connected drive shaft 1 to rotate through the coupling. Since both drive shafts 1 are equipped with transmission wheels, and these two transmission wheels are connected by a belt, chain or synchronous belt, when one drive shaft 1 rotates, it will drive the other drive shaft 1 to rotate synchronously through the transmission wheel.

[0052] The synchronous rotation of the two drive shafts 1 causes the cams 6 fixedly connected to them to rotate synchronously as well. The rotation of the cams 6 is transmitted to the cam support 2 through the cam bearing 8, which in turn drives the connecting rods 3 connected to the cam support 2 to perform a circular reciprocating oscillating motion. The mounting plate between the connecting rods 3 and other components mounted on the mounting plate (such as the deflecting teeth, the bearing tray, etc.) will also perform a circular reciprocating oscillating motion, thus realizing the core function of the vibration component. Throughout the process, the amplitude of the oscillation can be preset through the aforementioned adjustment mechanism, and the frequency of the oscillation can be adjusted through the motor speed, thereby achieving customized and efficient oscillation processing for different materials.

[0053] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0054] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A vibration assembly, characterized in that, It includes a housing, two drive shafts (1), two sets of cam supports (2), two connecting rods (3), two fixing rods (4), and a drive assembly; Both ends of the two drive shafts (1) are rotatably connected to the housing via bearings (8), and two cams (6) are fixedly connected to each of the two drive shafts (1), and the two sets of cams (6) are symmetrically arranged; Both sets of cam brackets (2) are inlaid with cam (6) bearings (8), and the cam (6) is installed in the cam (6) bearings (8). Both sets of cam brackets (2) are provided with adjustment grooves (5). Both ends of the two connecting rods (3) are provided with connecting parts (12), and the connecting parts (12) are slidably connected in the adjusting groove (5). There are mounting plates arranged at equal intervals between the two connecting rods (3), and the two ends of the mounting plates are respectively installed on the two connecting rods (3). The two ends of the fixed rod (4) are respectively fixedly connected to the two cam brackets (2). A reinforcing rod (13) is provided between the two fixed rods (4), and both ends of the reinforcing rod (13) are fixedly connected to the fixed rod (4). At least one limiting component is provided on the fixed rod (4), and the position of the connecting rod (3) in the slide groove is adjusted by the limiting component. The drive assembly is mounted on the housing and is used to drive the two drive shafts (1) to rotate synchronously.

2. The vibration assembly according to claim 1, characterized in that, The connector (12) includes a guide shaft that is slidably connected in the adjustment groove (5), one end of the guide shaft is fixedly connected to the connecting rod (3), and a locking bolt is threaded onto the guide shaft.

3. A vibration assembly according to claim 2, characterized in that, A retaining ring is slidably connected to the locking bolt, and the retaining ring abuts against the outer surface of the cam support.

4. A vibration assembly according to claim 1, characterized in that, The limiting component includes a first through hole on the fixed rod (4) and a second through hole on the connecting rod (3), wherein the first through hole and the second through hole are matched.

5. A vibration assembly according to claim 4, characterized in that, The limiting assembly also includes a screw (9), the two ends of which pass through the first through hole and the second through hole respectively and extend to the top of the fixing rod (4) and the bottom of the connecting rod (3). Two buffer sleeves (10) are slidably connected on the screw (9), and the two buffer sleeves (10) are located below the connecting rod (3) and above the fixing rod (4) respectively.

6. A vibration assembly according to claim 5, characterized in that, The screw (9) has two locking nuts (11) threaded to both ends, and the connecting plate and the fixing plate are located between the two sets of locking nuts (11).

7. A vibration assembly according to claim 1, characterized in that, The drive assembly includes a motor mounted on the housing, and two drive shafts (1) are each equipped with a transmission wheel, and the two transmission wheels are connected in a transmission manner. The output shaft of the motor is connected to any one of the drive shafts (1) via a coupling.

8. A vibration assembly according to claim 7, characterized in that, The drive wheel is a belt pulley, and the drive wheel is located outside the housing. The two drive wheels are connected by a belt.

9. A vibration assembly according to claim 7, characterized in that, The drive wheel is a sprocket, and the drive wheel is located outside the housing. The two drive wheels are connected by a chain.

10. A vibration assembly according to claim 7, characterized in that, The drive wheel is a synchronous wheel, and the drive wheel is located outside the housing. The two drive wheels are connected by a synchronous belt.

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