Low-noise double-bed same-frequency type vibration bed structure

Abstract

The utility model relates to the technical field of medical instruments, in particular to a low-noise double-bed same-frequency type vibration bed structure which comprises a supporting frame used for being placed on an external bearing face and a first vibration frame arranged on the supporting frame in a reciprocating motion mode. The device further comprises a driving device, a second vibration frame and a rolling assembly, the first vibration frame is connected with the second vibration frame, the first vibration frame and the second vibration frame are both in sliding connection with the supporting frame through the rolling assembly, and the driving device is arranged on the supporting frame. The output end of the driving device is connected with the first vibration frame and / or the second vibration frame and used for driving the first vibration frame and the second vibration frame to synchronously reciprocate relative to the supporting frame. The two vibration frames are arranged on the supporting frame in a sliding mode, the driving device is used for driving the two vibration frames to generate same-frequency vibration, the applicability of the vibration bed is improved, friction between the supporting frame and the vibration frames is reduced through the arrangement of the rolling assemblies, noise generated when a system works is reduced, and meanwhile the uniformity of power transmission of the driving device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular discloses a low-noise double-bed same-frequency vibrating bed structure. Background Art

[0002] As people's living standards improve, more and more people begin to pay attention to the issue of sleep quality. As a new type of health equipment, vibrating beds can help users relax muscles, promote blood circulation, and thus improve sleep quality through moderate vibration. However, most existing vibrating beds have problems such as loud noise and uneven vibration, which affects the user experience.

[0003] Traditional vibrating beds mainly achieve vibration effects through a single vibration device, and the vibration frequency and amplitude are often difficult to distribute evenly. More importantly, due to the large friction between the vibration frame and the support frame, a large noise is generated during the vibration process, further affecting the user's rest and sleep. Therefore, how to design a vibrating bed that can reduce noise, achieve the same frequency vibration and improve user experience has become an urgent problem to be solved. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a low-noise double-bed same-frequency vibrating bed structure to solve the above-mentioned technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides a low-noise twin-bed synchronous frequency vibrating bed structure, comprising a support frame for being placed on an external bearing surface, and a first vibrating frame reciprocatingly arranged on the support frame; further comprising a driving device, a second vibrating frame and a rolling assembly, wherein the first vibrating frame is fixedly connected to the second vibrating frame, and the first vibrating frame and the second vibrating frame are both rollingly connected to the support frame via the rolling assembly, the driving device is arranged on the support frame, and the output end of the driving device is connected to the first vibrating frame and / or the second vibrating frame and is used to drive the first vibrating frame and the second vibrating frame to reciprocate synchronously relative to the support frame.

[0006] Furthermore, the low-noise twin-bed synchronous vibration bed also includes a transmission bracket, the output end of the driving device is connected to the transmission bracket, the transmission bracket is rollingly connected to the support frame via a rolling assembly, and the first vibration frame and the second vibration frame are fixedly connected to the support frame by detachable fasteners respectively.

[0007] Furthermore, the rolling assembly includes a moving rod, a fixed seat and a rolling element. The fixed seat is hollow inside to form an accommodating cavity for accommodating the reciprocating motion of the moving rod. The fixed seat and / or the moving rod are provided with a guide groove connected to the accommodating cavity. The rolling element is rolled in the guide groove, and the rolling element is located between the moving rod and the fixed seat.

[0008] Furthermore, the fixing seat is fixedly connected to the supporting frame, and the moving rod is fixedly connected to the vibration frame or the transmission bracket.

[0009] Furthermore, there are multiple guide grooves, which are arranged in an array around the central axis of the movable rod, and at least two rolling elements are arranged in each guide groove; and stop plates for limiting the rolling element in the accommodating cavity are provided at both ends of the fixed seat.

[0010] Furthermore, the support frame has a rectangular outer frame, the transmission bracket is located in the rectangular outer frame, the first vibration frame and the second vibration frame are respectively located at both ends of the transmission bracket, the length direction of the vibration frame is perpendicular to the length direction of the transmission bracket, and the first vibration frame and the second vibration frame are used to carry the user.

[0011] Furthermore, the rolling element includes a spherical rigid ball and a flexible ball sleeve covering the rigid ball.

[0012] Furthermore, the driving device includes a bearing platform arranged on a support frame, a driving motor arranged on the bearing platform, and an eccentric mechanism connected to the output shaft of the driving motor; the eccentric mechanism includes an eccentric shaft rotatably arranged on the bearing platform, a transmission connecting rod transmission-connected to the eccentric shaft, a transmission sleeve is provided at one end of the transmission connecting rod, the transmission sleeve is rotatably sleeved on the outer side of the eccentric shaft, the other end of the transmission connecting rod is connected to a transmission bracket, and the eccentric shaft is connected to the output shaft of the driving motor.

[0013] Furthermore, the driving device also includes a reduction mechanism connected between the eccentric shaft and the driving motor, the reduction mechanism includes a first pulley, a second pulley, a third pulley, a fourth pulley and two belts, the first pulley is connected to the output shaft of the driving motor, the second pulley is connected to the first pulley via a belt transmission, the second pulley and the third pulley are coaxially rotationally connected, the third pulley and the fourth pulley are connected via another belt transmission, and the fourth pulley is connected to the eccentric shaft; the outer diameters of the first pulley and the third pulley are equal, the outer diameters of the second pulley and the fourth pulley are equal, and the outer diameter of the first pulley is smaller than the outer diameter of the second pulley.

[0014] Furthermore, the eccentric mechanism also includes a buffer arm, and one end of the transmission connecting rod away from the transmission sleeve is rotatably connected to one end of the buffer arm, and the end of the buffer arm away from the transmission connecting rod is used to connect to the transmission bracket; a soft rubber pad is provided at the rotational cooperation point between the buffer arm and the transmission connecting rod.

[0015] Furthermore, a soundproof cover is provided on the upper cover of the driving device, and a flexible layer is provided on the inner wall of the soundproof cover, and the flexible layer includes one or more of polyurethane, mineral wool, soundproof wool, rubber and heavy vinyl; the soundproof cover has a plurality of heat dissipation holes penetrating the soundproof cover.

[0016] The beneficial effects of the utility model: a low-noise twin-bed same-frequency vibration bed mainly includes a support frame, a first and a second vibration frame, a driving device and a rolling assembly. The first and the second vibration frames are slidably connected to the support frame through the rolling assembly, and are driven by the driving device to generate same-frequency vibrations. The rolling assembly is composed of a moving rod, a fixed seat and a rolling element. The rolling element includes a rigid sphere and a flexible ball sleeve wrapped on the rigid sphere to ensure that the vibration frame vibrates smoothly and with low noise. The driving device is driven by an eccentric mechanism and is equipped with a reduction mechanism and a buffer arm to reduce vibration shock. The soundproof cover covers the top of the driving device, and the inner wall is provided with a flexible layer for sound insulation. The vibration is evenly transmitted to the two vibration frames through the transmission bracket to ensure that the two vibration frames operate efficiently and stably in a low-noise environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in a disassembled state;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the rolling assembly of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the driving device and the sound insulation cover of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the disassembled state of the driving device of the utility model.

[0022] Reference numerals include:

[0023] 1. Support frame; 11. Support foot; 12. Rectangular outer frame; 2. First vibration frame; 21. Second vibration frame; 3. Driving device; 4. Rolling assembly; 5. Transmission bracket; 6. Sound insulation cover; 31. Load-bearing platform; 311. Mounting seat; 32. Driving motor; 33. Eccentric shaft; 34. Transmission connecting rod; 341. Transmission sleeve; 35. Speed ​​reduction mechanism; 351. First pulley; 352. Second pulley; 353. Third pulley; 354. Fourth pulley; 355. Belt; 36. Buffer arm; 41. Moving rod; 42. Fixed seat; 420. Accommodating chamber; 43. Rolling element; 45. Guide groove; 46. Stop plate. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0025] See also Figures 1 to 5As shown, a low-noise double-bed synchronous vibration bed structure of the utility model includes a support frame 1 for being placed on an external bearing surface, and a first vibration frame 2 reciprocatingly arranged on the support frame 1; it also includes a driving device 3, a second vibration frame 21 and a rolling assembly 4, the first vibration frame 2 is fixedly connected to the second vibration frame 21, and the first vibration frame 2 and the second vibration frame 21 are both rollingly connected to the support frame 1 via the rolling assembly 4, the driving device 3 is arranged on the support frame 1, and the output end of the driving device 3 is connected to the first vibration frame 2 and / or the second vibration frame 21 and is used to drive the first vibration frame 2 and the second vibration frame 21 to reciprocate synchronously relative to the support frame 1.

[0026] In this embodiment, the first vibration frame 2 and the second vibration frame 21 (hereinafter referred to as the vibration frame) have the same structure, both of which are composed of a plurality of rectangular square tubes connected to each other. The vibration frame is in the shape of a rectangular parallelepiped. Similarly, the support frame 1 is also in the shape of a rectangular parallelepiped. The length direction of the support frame 1 is perpendicular to the length direction of the vibration frame. The driving device 3 is composed of a driving motor 32 and an eccentric mechanism. The rolling assembly 4 is located between the vibration frame and the support frame 1. Four supporting feet 11 are provided at the bottom of the support frame 1. Universal wheels or buffer pads can be installed at the bottom of the supporting feet 11. In actual use: first, the support frame 1 is fixed to the ground with the help of the supporting feet 11, and the driving device 3 is started. The driving device 3 drives the interconnected first vibration frame 2 and the second vibration frame 21 to vibrate synchronously. The setting of the rolling assembly 4 further reduces the friction between the vibration frame and the support frame 1, reduces the generation of noise, and makes the two vibration frames vibrate stably and synchronously in a low-noise environment.

[0027] Specifically, the low-noise twin-bed synchronous vibration bed also includes a transmission bracket 5, the output end of the driving device 3 is connected to the transmission bracket 5, the transmission bracket 5 is rollingly connected to the support frame 1 via a rolling assembly 4, and the first vibration frame 2 and the second vibration frame 21 are respectively fixedly connected to the support frame 1 by detachable fasteners. In this embodiment, the transmission bracket 5 is connected by a bottom frame and a top frame detachably connected to the bottom frame, both of which are assembled from rectangular square tubes and are in the shape of a cuboid; the rolling assembly 4 is located between the bottom frame and the support frame 1, the output end of the driving device 3 is connected to the middle of the crossbeam of the bottom frame, the top frame is fixed to the bottom frame by bolt connection, and the vibration frame is also fixed to the top frame by bolt connection. This connection method is simple and reliable, saves manufacturing costs, and can realize detachable connection between the top frame, the bottom frame, the two vibration frames and the support frame 1, which is convenient for subsequent maintenance.

[0028] Specifically, the rolling assembly 4 includes a moving rod 41, a fixed seat 42 and a rolling element 43. The fixed seat 42 is hollow inside to form a receiving cavity 420 for accommodating the reciprocating motion of the moving rod 41. The fixed seat 42 or / and the moving rod 41 are provided with a guide groove 45 connected to the receiving cavity 420. The rolling element 43 is rolled and accommodated in the guide groove 45. The rolling element 43 is located between the moving rod 41 and the fixed seat 42. In this embodiment, the fixed seat 42 and the moving rod 41 are both provided with a guide groove 45. The guide groove 45 is in an arc shape. Under the limitation of the two guide grooves 45, the rolling element 43 rolls between the fixed seat 42 and the moving rod 41 to achieve the purpose of reducing friction and noise. Reducing friction means reducing wear, thereby extending the service life of the transmission bracket 5 and the support frame 1.

[0029] Specifically, the fixing seat 42 is fixedly connected to the support frame 1, and the moving rod 41 is fixedly connected to the vibration frame or the transmission bracket 5. In this embodiment, the moving rod 41 is detachably connected to the transmission bracket 5 by bolts and nuts, and the fixing seat 42 is detachably connected to the support frame 1 by bolts and nuts, so as to facilitate later maintenance. In actual use, the moving rod 41 can be directly connected to the vibration frame, eliminating the transmission step of the transmission bracket 5, and the output end of the driving device 3 is directly connected to the two vibration frames. However, considering that the vibration intensity of this method is too large and it is not convenient for replacement and maintenance, the transmission bracket 5 is selected for transmission.

[0030] Specifically, four rolling assemblies 4 are provided, and the four rolling assemblies 4 are divided into two groups and respectively installed at both ends of the transmission bracket 5 in the length direction. This design can maximize the reduction of friction between the transmission bracket 5 and the support frame 1 during relative movement, reduce the noise during the operation of the entire system, and improve comfort.

[0031] Specifically, the number of the guide grooves 45 is 4, and the 4 guide grooves 45 are arranged in an array around the central axis of the moving rod 41, and at least two rolling elements 43 are arranged in each guide groove 45; both ends of the fixed seat 42 are provided with stop plates 46 for limiting the rolling element 43 in the accommodating cavity 420. The design of multi-point contact and rolling transmission improves the operating accuracy and stability of the system and reduces the error and shaking caused by friction. The stop plate 46 and the fixed seat 42 are detachably connected, and a silicone gasket is provided at the joint between the two. In actual use, the silicone gasket can be dustproof and waterproof, and lubricating oil can also be passed into the accommodating cavity 420, at which time the silicone gasket can prevent the lubricating oil from leaking.

[0032] Specifically, the support frame 1 has a rectangular outer frame 12, the transmission bracket 5 is located in the rectangular outer frame 12, the first vibration frame 2 and the second vibration frame 21 are respectively located at both ends of the transmission bracket 5, and the length direction of the vibration frame is perpendicular to the length direction of the transmission bracket 5. The first vibration frame 2 and the second vibration frame 21 are used to carry external users. The addition of the rectangular outer frame 12 allows the transmission bracket 5 to reciprocate within the range of the rectangular outer frame 12, and also enables the support frame to withstand a large load, thereby ensuring the safe use of the vibration bed.

[0033] Specifically, the rolling element 43 includes a spherical rigid sphere and a flexible ball sleeve coated on the rigid sphere. The rigid sphere is made of a material with high hardness and good wear resistance, such as stainless steel bearing steel, etc. The flexible ball sleeve is made of a material with good elasticity, wear resistance and corrosion resistance, such as polyurethane, fluororubber, etc. The flexible ball sleeve is coated on the rigid sphere through injection molding, vulcanization and other processes to ensure a close fit with it while ensuring a certain degree of elasticity. This design can further reduce the friction coefficient during the operation of the system, and the flexible ball sleeve absorbs vibration and impact, reduces vibration noise, and can also protect the rigid sphere from direct impact, thereby extending the service life of the rolling element 43.

[0034] Specifically, the driving device 3 includes a bearing platform 31 arranged on the support frame 1, a driving motor 32 arranged on the bearing platform 31, and an eccentric mechanism connected to the output shaft of the driving motor 32; the eccentric mechanism includes an eccentric shaft 33 rotatably arranged on the bearing platform 31, and a transmission connecting rod 34 transmission-connected to the eccentric shaft 33, one end of the transmission connecting rod 34 is provided with a transmission sleeve 341, the inner wall of the transmission sleeve 341 is in contact with the outer wall of the eccentric shaft 33, the other end of the transmission connecting rod 34 is connected to the transmission bracket 5, and the eccentric shaft 33 is connected to the output shaft of the driving motor 32.

[0035] In this embodiment, the driving motor 32 adopts an external motor, the external rotor of the external motor is provided with a rotating shaft, the stator of which is fixed on the bearing platform 31 through a mounting seat 311, and the eccentric shaft 33 is rotatably mounted on the mounting seat 311 through a bearing; when in use, the rotating shaft can be directly connected to the eccentric shaft 33, and the eccentric shaft 33 converts the rotary motion of the rotating shaft into high-frequency linear reciprocating motion, and then the eccentric shaft 33 transmits the linear motion to the transmission connecting rod 34 through the eccentric sleeve, and the transmission connecting rod 34 drives the transmission bracket 5 to vibrate, thereby driving the two vibration frames on the transmission bracket 5 to vibrate at the same frequency. The whole structure is simple and compact, which is convenient for later maintenance. The direct transmission method can reduce the intermediate transmission links and improve the transmission efficiency.

[0036] Specifically, the driving device 3 also includes a reduction mechanism 35 connected between the eccentric shaft 33 and the driving motor 32, the reduction mechanism 35 includes a first pulley 351, a second pulley 352, a third pulley 353, a fourth pulley 354 and two belts 355, the first pulley 351 is connected to the output shaft of the driving motor 32, the second pulley 352 is connected to the first pulley 351 via a belt 355, the second pulley 352 and the third pulley 353 are coaxially connected in rotation, the third pulley 353 and the fourth pulley 354 are connected to the eccentric shaft 33; the outer diameters of the first pulley 351 and the third pulley 353 are equal, the outer diameters of the second pulley 352 and the fourth pulley 354 are equal, and the outer diameter of the first pulley 351 is smaller than the outer diameter of the second pulley 352.

[0037] After adding the speed reduction mechanism 35, the working principle of the entire drive system becomes more complicated but more efficient. First, the drive motor 32 is started, and its output shaft drives the first pulley 351 to rotate. Since the first pulley 351 is connected to the second pulley 352 through the belt 355, and the outer diameter of the first pulley 351 is smaller than the outer diameter of the second pulley 352, according to the characteristics of the belt drive, the speed of the second pulley 352 will be lower than the speed of the first pulley 351, thus achieving the first speed reduction.

[0038] Next, since the second pulley 352 and the third pulley 353 are coaxially connected in rotation, their rotation speeds are the same. However, the third pulley 353 and the fourth pulley 354 are connected in transmission through another belt 355, and the outer diameters of the third pulley 353 and the first pulley 351 are equal, and the outer diameters of the fourth pulley 354 and the second pulley 352 are also equal. This means that the transmission ratio from the third pulley 353 to the fourth pulley 354 is the same as the transmission ratio from the first pulley 351 to the second pulley 352, so the rotation speed of the fourth pulley 354 will be further reduced, that is, the rotation speed of the eccentric shaft 33 is decelerated twice, and finally, the decelerated eccentric shaft 33 drives the transmission connecting rod 34 and the transmission bracket 5 to move, realizing power transmission and mechanical movement.

[0039] Through the speed reduction mechanism 35, the output speed of the driving motor 32 is significantly reduced, and the torque is increased. Even if two bed bodies are installed on the two vibration frames, a good vibration effect can be achieved. In addition, the speed reduction mechanism 35 can reduce the speed fluctuation and error in the transmission process and improve the transmission accuracy and stability. In actual use, the speed reduction mechanism 35 with an adjustable transmission ratio can be designed to meet different transmission requirements.

[0040] Specifically, the eccentric mechanism further includes a buffer arm 36, and one end of the transmission connecting rod 34 away from the transmission sleeve 341 is rotatably connected to one end of the buffer arm 36, and the end of the buffer arm 36 away from the transmission connecting rod 34 is used to connect the transmission bracket 5; a soft rubber pad is provided at the rotational matching position between the buffer arm 36 and the transmission connecting rod 34. One end of the buffer arm 36 is rotatably connected to the end of the transmission connecting rod 34 away from the transmission sleeve 341, and this connection mode allows the two to have a certain relative freedom of movement while transmitting power. The other end of the buffer arm 36 is used to connect the transmission bracket 5, and finally transmit the power to the components that need to be driven. The presence of the soft rubber pad can absorb and alleviate the impact and vibration generated during the transmission process, protect the connection between the transmission connecting rod 34 and the buffer arm 36 from damage, and reduce the generation of noise. The introduction of the buffer arm 36 makes the transmission process smoother, reduces the transmission error caused by impact and vibration, and improves the transmission accuracy and stability.

[0041] Specifically, a soundproof cover 6 is provided on the upper cover of the driving device 3, and a flexible layer is provided on the inner wall of the soundproof cover 6, and the flexible layer includes one or more of polyurethane, mineral wool, soundproof cotton, rubber and heavy vinyl; the soundproof cover 6 has a plurality of heat dissipation holes penetrating the soundproof cover 6. The design of the soundproof cover 6 can effectively isolate the noise generated during the operation of the driving device 3, and protect the surrounding environment and users from noise interference. The flexible layer of the inner wall is made of materials such as polyurethane, mineral wool, soundproof cotton, rubber and heavy vinyl. These materials have good sound absorption and sound insulation properties, and can further enhance the sound insulation effect. The soundproof cover 6 is provided with a plurality of penetrating heat dissipation holes, which allow air circulation while ensuring the sound insulation effect, effectively dissipate the heat generated during the operation of the driving device 3, and prevent the equipment from overheating.

[0042] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A low-noise dual-bed same-frequency vibration bed structure, comprising a support frame (1) for being placed on an external bearing surface, and a first vibration frame (2) reciprocatingly arranged on the support frame (1); characterized in that: The invention also comprises a driving device (3), a second vibration frame (21) and a rolling assembly (4); the first vibration frame (2) is fixedly connected to the second vibration frame (21); the first vibration frame (2) and the second vibration frame (21) are both rollingly connected to the support frame (1) via the rolling assembly (4); the driving device (3) is arranged on the support frame (1); the output end of the driving device (3) is connected to the first vibration frame (2) and / or the second vibration frame (21) so as to drive the first vibration frame (2) and the second vibration frame (21) to synchronously reciprocate relative to the support frame (1).

2. The low-noise double-bed same-frequency vibrating bed structure according to claim 1 is characterized by: The low-noise twin-bed synchronous vibration bed also includes a transmission bracket (5), the output end of the driving device (3) is connected to the transmission bracket (5), the transmission bracket (5) is rollingly connected to the support frame (1) via a rolling assembly (4), and the first vibration frame (2) and the second vibration frame (21) are respectively detachably fixedly connected to the support frame (1).

3. The low-noise double-bed same-frequency vibrating bed structure according to claim 1 is characterized by: The rolling assembly (4) comprises a moving rod (41), a fixed seat (42) and a rolling element (43); the fixed seat (42) is hollow inside and is provided with a receiving cavity (420) for accommodating the reciprocating motion of the moving rod (41); the fixed seat (42) or / and the moving rod (41) are provided with a guide groove (45) connected to the receiving cavity (420); the rolling element (43) is rollingly accommodated in the guide groove (45); and the rolling element (43) is located between the moving rod (41) and the fixed seat (42).

4. The low-noise double-bed same-frequency vibrating bed structure according to claim 3 is characterized by: The fixing seat (42) is fixedly connected to the support frame (1), and the moving rod (41) is fixedly connected to the first vibration frame (2) and / or the second vibration frame (21).

5. The low-noise double-bed same-frequency vibrating bed structure according to claim 3 is characterized by: The number of the guide grooves (45) is multiple, and the multiple guide grooves (45) are arranged in an array around the central axis of the moving rod (41), and at least two of the rolling elements (43) are arranged in each guide groove (45); and stop plates (46) for limiting the rolling element (43) in the accommodating cavity (420) are provided at both ends of the fixed seat (42).

6. The low-noise dual-bed same-frequency vibrating bed structure according to claim 2 is characterized by: The support frame (1) has a rectangular outer frame (12), the transmission bracket (5) is located in the rectangular outer frame (12), the first vibration frame (2) and the second vibration frame (21) are respectively located at two ends of the transmission bracket (5), the length direction of the vibration frame is perpendicular to the length direction of the transmission bracket (5), and the first vibration frame (2) and the second vibration frame (21) are used to carry a user.

7. The low-noise dual-bed same-frequency vibrating bed structure according to claim 2 is characterized by: The driving device (3) comprises a bearing platform (31) arranged on a support frame (1), a driving motor (32) arranged on the bearing platform (31), and an eccentric mechanism connected to the output shaft of the driving motor (32); the eccentric mechanism comprises an eccentric shaft (33) rotatably arranged on the bearing platform (31), a driving connecting rod (34) drivingly connected to the eccentric shaft (33), one end of the driving connecting rod (34) is provided with a driving sleeve (341), the driving sleeve (341) is rotatably sleeved on the outer side of the eccentric shaft (33), the other end of the driving connecting rod (34) is connected to a driving bracket (5), and the eccentric shaft (33) is connected to the output shaft of the driving motor (32).

8. The low-noise dual-bed same-frequency vibrating bed structure according to claim 7 is characterized by: The driving device (3) further comprises a speed reduction mechanism (35) connected between the eccentric shaft (33) and the driving motor (32), wherein the speed reduction mechanism (35) comprises a first pulley (351), a second pulley (352), a third pulley (353), a fourth pulley (354) and two belts (355); The first pulley (351) is connected to the output shaft of the driving motor (32), the second pulley (352) is connected to the first pulley (351) via a belt (355), the second pulley (352) and the third pulley (353) are coaxially connected, the third pulley (353) and the fourth pulley (354) are connected via another belt (355), and the fourth pulley (354) is connected to the eccentric shaft (33); The outer diameters of the first pulley (351) and the third pulley (353) are equal, the outer diameters of the second pulley (352) and the fourth pulley (354) are equal, and the outer diameter of the first pulley (351) is smaller than the outer diameter of the second pulley (352).

9. The low-noise dual-bed same-frequency vibrating bed structure according to claim 7 is characterized by: The eccentric mechanism further comprises a buffer arm (36), one end of the transmission connecting rod (34) away from the transmission sleeve (341) is rotatably connected to one end of the buffer arm (36), and the end of the buffer arm (36) away from the transmission connecting rod (34) is used to connect to the transmission bracket (5); a soft rubber pad is provided at the rotational matching position between the buffer arm (36) and the transmission connecting rod (34).

10. The low-noise dual-bed same-frequency vibrating bed structure according to claim 1 is characterized by: A soundproof cover (6) is provided above the driving device (3); an inner wall of the soundproof cover (6) is provided with a flexible layer, the flexible layer comprising one or more of polyurethane, mineral wool, soundproof wool, rubber and heavy vinyl; the soundproof cover (6) has a plurality of heat dissipation holes penetrating the soundproof cover (6).

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