A suspended grain bin cleaning device

CN122829019APending Publication Date: 2026-09-29WUHAN POLYTECHNIC UNIVERSITY
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Patent Information

Application Number
CN202610888824.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-18
Publication Date
2026-09-29

AI Technical Summary

Technical Problem

[0005]基于上述表述,本发明提供了一种悬挂式粮仓清理装置,以解决现有地面移动式清理设备清理范围有限、难以对粮仓侧壁及高位区域进行有效清理,以及部分悬挂式设备结构复杂、运行稳定性不足的问题,提出一种悬挂式粮仓清理装置

Benefits of technology

通过环轨周向移动、滑道轴向移动与吊绳竖向升降的悬挂式三维运动机构,可全面覆盖粮仓侧壁、仓底及各高度区域,突破了地面移动式设备无法清理高位区域与仓壁的局限;通过姿态调节组件调整机架整体倾角,配合侧刷调节组件调节侧刷组件角度,可使侧刷稳定贴合不同曲率的仓壁,保障侧壁板结粮食、附着粉尘的清理效果;同时集成侧刷组件与底刷组件,由驱动机构统一驱动,可同步完成侧壁清扫与仓底清理,结构紧凑,作业效率高。

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Abstract

The application discloses a suspension type granary cleaning device, relates to the technical field of granary cleaning, and aims to solve the problems of limited operation range of the existing ground cleaning equipment, difficulty in covering the lateral wall and high-position area of the granary, low manual cleaning efficiency and high safety risk. The device comprises a ring rail, a ring moving assembly, a longitudinal moving assembly and a robot. The ring moving assembly is slidingly connected to the ring rail and is provided with a slide. The longitudinal moving assembly is slidingly connected to the slide and is provided with a vertically lifting lifting rope. The robot is fixedly connected to the bottom of the lifting rope. The robot is provided with a rack, a posture adjusting assembly, a side brush assembly, a side brush adjusting assembly, a bottom brush assembly and a driving mechanism. The rack and the side brush can be adjusted in inclination, and the brush body can be synchronously driven to operate. The device can realize three-dimensional space movement, adaptively adhere to the wall of the granary, and complete the full coverage automatic cleaning of the lateral wall and the bottom of the granary.
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Description

Technical Field

[0001] This invention relates to the field of grain warehouse cleaning technology, and specifically to a suspended grain warehouse cleaning device. Background Technology

[0002] To address the issue of cleaning the interior of grain silos, various mechanized cleaning devices have been proposed in existing technologies. For example, air drum cleaning devices use air pressure to propel grain particles and clean residual grain at the bottom of the silo; spiral cleaning machines use a rotating spiral mechanism to continuously convey and clean materials at the bottom of the silo; and scraper cleaning machines rely on a scraper mechanism to perform a fan-shaped sweep of the silo bottom. While these devices can clean residual grain at the bottom of the silo, they are mainly suitable for the bottom area of ​​flat-bottomed grain silos or silos, and are difficult to effectively clean the side walls and high-level compacted grain.

[0003] However, existing grain storage cleaning robots still have certain shortcomings: some equipment has a complex structure and large size, making it poorly adaptable to the structure of grain storage facilities; ground-based mobile equipment is easily limited by grain piles and complex terrain, making it difficult to cover high areas of grain storage facilities; at the same time, existing devices generally suffer from low automation, low cleaning efficiency, and high maintenance costs, making it difficult to meet the needs of intelligent and efficient cleaning operations in large grain storage facilities.

[0004] Therefore, designing a suspended grain silo cleaning device that is simple in structure, stable in operation, highly adaptable, and has intelligent control functions is of great significance for improving grain silo cleaning efficiency, reducing manual labor intensity, and ensuring the safety of grain storage. Summary of the Invention

[0005] Based on the above description, the present invention provides a suspended grain warehouse cleaning device to solve the problems of limited cleaning range of existing ground-based mobile cleaning equipment, difficulty in effectively cleaning the side walls and high areas of grain warehouses, and the complex structure and insufficient operational stability of some suspended equipment.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A suspended grain silo cleaning device includes a ring track, a circumferential moving component, a longitudinal moving component, and a robot. The circumferential moving component is slidably connected to the ring rail and has a slide rail extending radially along the ring rail. The longitudinal moving component is slidably connected to the slide rail and has a vertical lifting suspension rope. The robot is fixed to the bottom of the suspension rope; The robot includes a frame, on which are mounted: An attitude adjustment assembly is used to adjust the tilt angle of the frame. The side brush assembly has at least two sets of side brush wheels extending out of the frame at its end. A side brush adjustment assembly is used to adjust the tilt angle of the side brush assembly; Bottom brush assembly, having a bottom brush wheel located at the bottom of the frame; A drive mechanism is used to drive the side brush wheel and the bottom brush wheel to rotate.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the attitude adjustment assembly includes a universal joint, a main shaft, and several first drive components. The main shaft and the first drive components are fixed to the frame. The universal joint is connected between the main shaft and the suspension rope. A pull rope is provided between the first drive component and the main shaft. The first drive component retracts and extends the pull rope to change the tilt angle of the frame.

[0009] Furthermore, the side brush adjustment assembly includes an upper connecting rod, a lower connecting rod, a side brush connecting rod, and a fourth driving member. The inner ends of the upper connecting rod and the lower connecting rod are respectively hinged to the frame, and the outer ends of the upper connecting rod and the lower connecting rod are respectively hinged to the two ends of the side brush connecting rod. The side brush wheel is rotatably connected to the side brush connecting rod in sequence. The fourth driving member is fixedly connected to the hinge shaft of the upper connecting rod or the lower connecting rod to control the rotation of the upper connecting rod or the lower connecting rod.

[0010] Furthermore, the side brush assembly includes a side brush wheel, a brush sleeve, and a side gear. The side brush wheel is rotatably connected to the side brush connecting rod, the brush sleeve is sleeved on the side brush wheel, and the side gear is fixed to the axle of the side brush wheel, with adjacent side gears meshing.

[0011] Furthermore, the side brush wheel is a magnetic wheel.

[0012] Furthermore, a buffer assembly is provided on the frame, the buffer assembly includes a middle plate, a middle connecting rod and a flexible component, the frame includes an upper plate and a lower plate, a middle shaft is connected between the upper plate and the lower plate, the middle plate is sleeved on the middle shaft, the flexible component is respectively disposed in the gap between the upper plate, the middle plate and the lower plate, one end of the middle connecting rod is hinged to the middle plate, and the other end is hinged to the upper connecting rod or the lower connecting rod.

[0013] Furthermore, the drive mechanism includes a third drive member, a first input bevel gear, a first output bevel gear, a second input bevel gear, a second output bevel gear, and a belt. The third drive member has a dual-axis output. One output end of the third drive member is fixedly connected to the first input bevel gear, and the other output end of the third drive member is fixedly connected to the bottom brush assembly for transmission. The first input bevel gear meshes with the first output bevel gear, the first output bevel gear is fixedly connected with the second input bevel gear, the second input bevel gear meshes with the second output bevel gear, and the second output bevel gear drives the side brush assembly to rotate via the belt.

[0014] Furthermore, a clutch is provided between the bottom brush assembly and the output end of the third drive component to control the separation and transmission of power.

[0015] Furthermore, from a top-down view, the brushing range of the bottom brush assembly is no less than that of the side brush assembly.

[0016] Furthermore, the frame is also equipped with a dust collection component, which includes a fan and multiple layers of filters.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The suspended three-dimensional motion mechanism, which uses circumferential movement of the ring track, axial movement of the slide rail, and vertical lifting of the hoisting rope, can fully cover the side walls, bottom, and various height areas of the grain silo, overcoming the limitations of ground-based mobile equipment that cannot clean high areas and silo walls. By adjusting the overall tilt angle of the frame through the attitude adjustment component and adjusting the angle of the side brush component in conjunction with the side brush adjustment component, the side brush can stably conform to the silo wall with different curvatures, ensuring the cleaning effect of the grain hardened and dust attached to the side wall. At the same time, the side brush component and the bottom brush component are integrated and driven by a unified drive mechanism, which can simultaneously complete the side wall cleaning and silo bottom cleaning. The structure is compact and the operation efficiency is high. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the central ring track and slide rail; Figure 3 This is a schematic diagram of the robot's internal structure; Figure 4 for Figure 3 A structural diagram from another perspective; Figure 5 A structural diagram of the robot with some parts hidden from its external view; Figure 6 This is a schematic diagram illustrating the working state of an embodiment of this solution.

[0019] The attached diagram lists the components represented by each number as follows: 1. Circular track; 2. Slide rail; 3. First drive component; 4. Second drive component; 5. Robot; 6. Main spindle; 7. Pull rope; 8. Upper link; 9. Lower link; 10. Side brush link; 11. Side brush wheel; 12. Upper plate; 13. Lower plate; 14. Middle plate; 15. Middle link; 16. First input bevel gear; 17. First output bevel gear; 18. Second input bevel gear; 19. Second output bevel gear; 20. Bottom brush assembly; 21. Vacuuming assembly; 22. Third drive component; 23. Fourth drive component. Detailed Implementation

[0020] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0021] 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 specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0022] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0023] like Figures 1 to 6 As shown, this embodiment provides a suspended grain silo cleaning device, including a ring track 1, a circumferential moving component, a longitudinal moving component, and a robot 5. The ring track 1 adopts a segmented arc structure spliced ​​to form a circumferential track, and is fixedly installed on the top inner wall edge of the vertical grain silo by a support frame. The circumferential moving component is slidably connected to the ring rail 1. A stepper motor and a gear and rack mechanism can be installed inside it. Through the meshing of the gear and the rack on the ring rail 1, the circumferential moving component is driven to slide smoothly along the circumference of the ring rail 1, achieving circumferential area coverage. The circumferential moving component is provided with a slide rail 2 along the radial direction of the ring rail 1. The longitudinal moving component is slidably connected to the slide rail 2 and can move back and forth along the extension direction of the slide rail 2. The longitudinal moving component has a built-in second drive component 4 and a vertical lifting rope. The second drive component 4 is preferably a winch. The lifting rope is made of corrosion-resistant high-strength steel wire rope to adapt to the high dust environment inside the grain silo. The robot 5 is fixedly connected to the bottom of the lifting rope. Through the circumferential movement of the circumferential moving component, the movement of the longitudinal moving component along the slide rail 2, and the vertical lifting of the lifting rope, the robot 5 can move in three-dimensional space inside the grain silo, fully covering the side walls, bottom, and different height areas of the grain silo. Tension sensors can also be installed in the longitudinal movement components to detect the stress state of the suspension rope in real time and feed the detection data back to the control system. When an abnormal load is detected, the operating parameters are automatically adjusted or the brake is triggered to ensure the stability and safety of the robot 5 during the lifting process.

[0024] Robot 5 includes a frame with a split structure, comprising an upper plate 12 and a lower plate 13, which are fixedly connected by an intermediate shaft. A main shaft 6 is fixedly connected to the center of the top of the frame, and the top of the main shaft 6 is connected to the bottom of the suspension rope via a universal joint. An attitude adjustment component is provided between the frame and the longitudinal movement assembly to adjust the overall tilt angle of the frame. The attitude adjustment component includes a universal joint, the main shaft 6, and several first drive components 3, preferably winches, installed on the top of the frame. Each first drive component 3 is connected to the main shaft 6 by a pull rope 7. By independently raising and lowering the corresponding pull rope 7 of each first drive component 3, and in conjunction with the multi-directional rotation of the universal joint, the tilt angle and deflection direction of the frame can be flexibly changed, enabling Robot 5 to deflect stably toward the side wall of the grain silo, ensuring the adhesion effect of the side wall cleaning operation.

[0025] Side brush assemblies and side brush adjustment assemblies are respectively provided on both sides of the frame. The side brush adjustment assemblies are used to adjust the swing angle of the side brush assemblies, so that the side brush assemblies can adaptively conform to the inner walls of the grain silo with different curvatures. The side brush adjustment assembly includes an upper connecting rod 8, a lower connecting rod 9, a side brush connecting rod 10, and a fourth driving member 23. The inner ends of the upper connecting rod 8 and the lower connecting rod 9 are respectively hinged to the side walls of the frame, and the outer ends of the upper connecting rod 8 and the lower connecting rod 9 are respectively hinged to the upper and lower ends of the side brush connecting rod 10. The upper connecting rod 8, the lower connecting rod 9, the side brush connecting rod 10, and the frame side walls together form a linkage mechanism. The end of the side brush assembly has at least two sets of side brush wheels 11 extending out of the frame. Each side brush wheel 11 is arranged in sequence and rotatably connected to the side brush connecting rod 10. The fourth driving member 23 is fixedly connected to the hinge shaft of the upper connecting rod 8 or the lower connecting rod 9, and controls the rotation of the upper connecting rod 8 or the lower connecting rod 9. The fourth driving member 23 is preferably a stepper motor.

[0026] Furthermore, the side brush assembly also includes a brush sleeve and side gears. The brush sleeve is fitted onto the outer circumferential surface of the side brush wheel 11 to improve the cleaning effect on the deposits attached to the silo wall. The side gears are fixedly connected to the axle end of each side brush wheel 11. The side gears of two adjacent side brush wheels 11 mesh with each other, so that when one side brush wheel 11 is driven to rotate, the other side brush wheels 11 can rotate synchronously through the meshing transmission of the side gears, ensuring that the rotation speed of each brush body is consistent. The side brush wheel 11 can be a magnetic wheel, which can generate an adsorption force when close to the metal side wall of the grain silo, helping the side brush wheel 11 to stably adhere to the surface of the silo wall and improving the reliability of the cleaning process.

[0027] A buffer assembly is also provided between the frame and the side brush adjustment assembly. The buffer assembly includes a middle plate 14, a middle connecting rod 16, and flexible components. The middle plate 14 is movably sleeved on the intermediate shaft between the upper plate 12 and the lower plate 13, and can slide along the axial direction of the intermediate shaft. The flexible components are respectively disposed in the gaps between the upper plate 12, the middle plate 14, and the lower plate 13. One end of the middle connecting rod 16 is hinged to the side of the middle plate 14, and the other end is hinged to the upper connecting rod 8 or the lower connecting rod 9 on the corresponding side. When the side brush wheel 11 contacts the bin wall and is subjected to a reaction force, the force can be transmitted to the middle connecting rod 16 through the connecting rod of the side brush adjustment assembly, thereby driving the middle plate 14 to slide along the intermediate shaft, squeezing the flexible components on the corresponding side. The deformation of the flexible components absorbs the impact, achieving buffering and shock absorption, avoiding rigid collisions between the equipment and the bin wall that could cause damage, and ensuring that the side brush wheel 11 and the bin wall always maintain a stable contact pressure, improving the uniformity of the cleaning effect.

[0028] The bottom of the frame is equipped with a bottom brush assembly 20, which includes a bottom brush wheel and brushes on the outside of the bottom brush wheel. It is used to clean residual grain, dust and impurities at the bottom of the grain bin. From a top view, the brushing range of the bottom brush assembly 20 is no less than that of the side brush assembly, which can fully cover the bottom working area and reduce cleaning dead corners. At the same time, when facing some hard-to-clean inner wall attachments, the horizontal sweeping of the bottom brush assembly 20 and the vertical sweeping of the side brush wheel 11 can work alternately to effectively improve the cleaning ability. The frame is equipped with a drive mechanism for synchronously driving the side brush wheel 11 and the bottom brush wheel to rotate. The drive mechanism includes a third drive component 22, a first input bevel gear 16, a first output bevel gear 17, a second input bevel gear 18, a second output bevel gear 19, and a belt. The third drive component 22 is a dual-axis output motor. One of its output ends is fixedly connected to the first input bevel gear 16, and the other output end is drivenly connected to the bottom brush assembly 20. The first input bevel gear 16 and the first output bevel gear 17 mesh with each other to achieve reversing transmission. The first output bevel gear 17 and the second input bevel gear 18 are coaxially fixedly connected. The second input bevel gear 18 and the second output bevel gear 19 mesh with each other to achieve secondary reversing. The output shaft of the second output bevel gear 19 is drivenly connected to the axle of one of the side brush wheels of the side brush assembly through a belt. During operation, the power output of the third drive unit 22 is divided into two paths. One path is directly transmitted downward to the bottom brush assembly 20, driving the bottom brush wheel to rotate for bottom cleaning. The other path is reversed through a two-stage bevel gear transmission and then transmitted to the side brush assembly via a belt drive, driving the side brush wheel 11 to rotate for side wall cleaning. The side brush and bottom brush are driven simultaneously by a single drive unit, which effectively simplifies the overall structure of the equipment and reduces manufacturing costs and maintenance difficulty.

[0029] Furthermore, a clutch can be provided between the bottom brush assembly 20 and the output end of the third drive component 22. The clutch controls the separation and engagement of power, and the power of the bottom brush assembly 20 can be turned on and off separately according to the operation scenario. For example, the power of the bottom brush can be cut off when only sidewall cleaning is performed, thereby reducing the energy consumption of the equipment operation.

[0030] The frame is also equipped with a dust collection component 21, which includes a centrifugal fan and a multi-layer filter structure. When the centrifugal fan is working, it can create a negative pressure area at the dust collection port, which will suck the suspended dust, stripped grain particles and impurities generated during the cleaning process into the component. After being filtered through multiple layers of filters, clean air is discharged, which effectively avoids secondary dust generation inside the grain silo, improves the cleaning effect and improves the working environment inside the silo.

[0031] This device is also equipped with a control system and a human-machine interface system. The control system uses a microcontroller as the main control core and integrates a motor drive module, a sensor acquisition module, and a power management module. The motor drive module independently controls the stepper motor of the circumferential moving component, the lifting motor of the longitudinal moving component, and the operation of the third drive component. The sensor acquisition module can connect to laser rangefinders, position detection sensors, tension sensors, dust sensors, and temperature and humidity sensors to collect the position information of robot 5, rope tension data, and environmental parameters inside the chamber in real time and feed them back to the main controller. Combined with the preset control program, it realizes the automatic adjustment of the robot 5's operating status and path planning. The human-machine interface system establishes a data connection with the control system through a wireless communication module. Operators can view the equipment's operating parameters in real time through a remote control terminal and remotely adjust the robot 5's movement trajectory, cleaning brush speed, and direction. The system is also equipped with an emergency stop module, which can quickly stop all equipment operations in case of abnormal working conditions, greatly improving the safety of cleaning operations.

[0032] The complete operation process of this suspended grain silo cleaning device is as follows: During the equipment installation stage, the ring rail 1 is first fixedly installed at the preset position on the top of the grain silo. The circumferential moving component is then snapped onto the ring rail 1. The robot 5 is then suspended inside the grain silo by the suspension rope of the longitudinal moving component. After the equipment is debugged, the operation can be started. After the cleaning operation is started, the circumferential moving component moves in a uniform circumferential direction along the ring rail 1. At the same time, the longitudinal moving component adjusts its radial position along the slide 2 (the direction of the corresponding slide 2 needs to be confirmed). The second drive component 4 retracts and releases the suspension rope to drive the robot 5 to rise and fall vertically, so that the robot 5 moves to the target working height and position. When performing side wall cleaning operations, the attitude adjustment component retracts and releases the corresponding pull rope 7 through the first drive component 3, and adjusts the deflection angle of the frame in conjunction with the universal joint, so that the robot 5 tilts towards the side wall of the grain silo, driving the side brush component to approach and adhere to the silo wall. The parallelogram linkage mechanism of the side brush adjustment component can automatically adjust the swing amplitude according to the curvature of the silo wall. Combined with the flexible buffering effect of the buffer component, the side brush wheel 11 always adheres to the surface of the silo wall with stable pressure. At this time, the drive mechanism drives the side brush wheel 11 to rotate at high speed, continuously peeling and cleaning the clumped grain, residual grain particles and dust attached to the silo wall. At the same time, the dust suction component 21 is activated simultaneously to suck in and filter the dust and debris generated during the cleaning process, avoiding secondary pollution. As the circumferential moving component moves continuously along the ring track 1, the suspension rope drives the robot 5 to gradually rise and fall, achieving full coverage cleaning of different circumferential positions and different height areas of the grain silo side wall, effectively eliminating cleaning dead corners. When the robot 5 descends to the bottom area of ​​the grain silo, the clutch closes to engage the power of the bottom brush component 20, and the bottom brush wheel begins to rotate to concentrate on cleaning the residual grain, deposited dust and impurities at the bottom of the silo. During the cleaning process, the dust suction component 21 is also used to collect and filter impurities. After all cleaning operations are completed, the clutch disconnects the power of the bottom brush component 20, the longitudinal moving component rewinds the suspension rope to smoothly lift the robot 5 to the initial position at the top of the grain silo, the circumferential moving component resets to the starting point, and the equipment stands by, completing the automated cleaning operation of the entire grain silo.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suspended grain silo cleaning device, characterized in that, Includes a circular track, circumferential motion components, longitudinal motion components, and a robot. The circumferential moving component is slidably connected to the ring rail and has a slide rail extending radially along the ring rail. The longitudinal moving component is slidably connected to the slide rail and has a vertical lifting suspension rope. The robot is fixed to the bottom of the suspension rope; The robot includes a frame, on which are mounted: An attitude adjustment assembly is used to adjust the tilt angle of the frame. The side brush assembly has at least two sets of side brush wheels extending out of the frame at its end. A side brush adjustment assembly is used to adjust the tilt angle of the side brush assembly; Bottom brush assembly, having a bottom brush wheel located at the bottom of the frame; A drive mechanism is used to drive the side brush wheel and the bottom brush wheel to rotate.

2. The suspended grain silo cleaning device according to claim 1, characterized in that, The attitude adjustment assembly includes a universal joint, a main shaft, and several first drive components. The main shaft and the first drive components are fixed to the frame. The universal joint is connected between the main shaft and the suspension rope. A pull rope is provided between the first drive component and the main shaft. The first drive component can raise and lower the pull rope to change the tilt angle of the frame.

3. The suspended grain silo cleaning device according to claim 1, characterized in that, The side brush adjustment assembly includes an upper connecting rod, a lower connecting rod, a side brush connecting rod, and a fourth driving member. The inner ends of the upper connecting rod and the lower connecting rod are respectively hinged to the frame, and the outer ends of the upper connecting rod and the lower connecting rod are respectively hinged to the two ends of the side brush connecting rod. The side brush wheel is rotatably connected to the side brush connecting rod in sequence. The fourth driving member is fixedly connected to the hinge shaft of the upper connecting rod or the lower connecting rod to control the rotation of the upper connecting rod or the lower connecting rod.

4. A suspended grain silo cleaning device according to claim 3, characterized in that, The side brush assembly includes a side brush wheel, a brush sleeve, and a side gear. The side brush wheel is rotatably connected to the side brush connecting rod, the brush sleeve is sleeved on the side brush wheel, and the side gear is fixed to the axle of the side brush wheel. Adjacent side gears mesh with each other.

5. A suspended grain silo cleaning device according to claim 4, characterized in that, The side brush wheel is a magnetic wheel.

6. A suspended grain silo cleaning device according to claim 1, characterized in that, The frame is equipped with a buffer assembly, which includes a middle plate, a middle connecting rod, and a flexible component. The frame includes an upper plate and a lower plate, and a middle shaft is connected between the upper plate and the lower plate. The middle plate is sleeved on the middle shaft. The flexible component is respectively disposed in the gap between the upper plate, the middle plate, and the lower plate. One end of the middle connecting rod is hinged to the middle plate, and the other end is hinged to the upper connecting rod or the lower connecting rod.

7. A suspended grain silo cleaning device according to claim 1, characterized in that, The drive mechanism includes a third drive member, a first input bevel gear, a first output bevel gear, a second input bevel gear, a second output bevel gear, and a belt. The third drive member has a dual-axis output. One output end of the third drive member is fixedly connected to the first input bevel gear, and the other output end of the third drive member is fixedly connected to the bottom brush assembly for transmission. The first input bevel gear meshes with the first output bevel gear, the first output bevel gear is fixedly connected with the second input bevel gear, and the second input bevel gear meshes with the second output bevel gear. The second output bevel gear drives the side brush assembly to rotate via the belt.

8. A suspended grain silo cleaning device according to claim 7, characterized in that, A clutch is provided between the bottom brush assembly and the output end of the third drive component to control the separation and transmission of power.

9. A suspended grain silo cleaning device according to claim 1, characterized in that, From a top-down view, the brushing range of the bottom brush assembly is no less than that of the side brush assembly.

10. A suspended grain silo cleaning device according to claim 1, characterized in that, The frame is also equipped with a dust collection component, which includes a fan and multiple layers of filters.