Buffering pinch roller device and photovoltaic cleaning robot
By designing a buffer pressure roller device, the problem of the cleaning robot getting stuck on the anti-tilt hook on the photovoltaic panel array was solved, enabling normal operation in scenarios with changes in angle and height, and enhancing the adaptability and stability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-13
AI Technical Summary
When existing cleaning robots operate on photovoltaic panel arrays, the anti-tilt hooks are prone to getting stuck, especially in scenarios with height differences and angle changes, which affects normal operation.
Design a buffer pressure roller device, including a mounting base, a support shaft assembly, a pressure roller, an elastic pressure application component, and a rotating support component. The support shaft assembly moves in a lever-like manner with the rotating support component as the fulcrum, enabling the pressure roller to move in the vertical direction to adapt to scenarios with changes in angle and height.
It effectively prevents the pressure roller device from jamming, ensures the cleaning robot operates normally on complex terrain, avoids tipping over, and improves the adaptability and stability of the equipment.
Smart Images
Figure CN223993655U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic cleaning technology, and in particular to a buffer pressure roller device and a photovoltaic cleaning robot. Background Technology
[0002] A cleaning robot is a device that cleans photovoltaic (PV) panel arrays to maintain their cleanliness, improve power generation efficiency, and extend their lifespan. The cleaning robot is positioned on the upper surface of the PV panel array. Since PV panel arrays are typically tilted, the cleaning robot is also tilted. This poses a risk of tipping over when the tilt angle is large or in strong winds. To address this, the industry has incorporated anti-tipping hooks at the bottom of the cleaning robot. These hooks are hooks extending under the PV panel array; some are even rollers, and their shapes can vary. However, existing anti-tipping hooks are usually fixed. While they move smoothly between relatively flat PV panel arrays, when there are height differences between the arrays and the cleaning robot needs to traverse overpasses, the fixed hooks can become stuck, affecting the robot's normal operation.
[0003] Therefore, it is necessary to propose a technical solution to overcome the shortcomings of existing technologies. Summary of the Invention
[0004] This application provides a buffer pressure roller device and a photovoltaic cleaning robot, designed to adapt to scenarios with changes in angle and height, such as climbing slopes, and to prevent the pressure roller device from getting stuck.
[0005] This application achieves its purpose through the following technical solution: a buffer pressure roller device, installed on a photovoltaic cleaning robot, is used to support the photovoltaic panel below and prevent the photovoltaic cleaning robot from tipping over. The buffer pressure roller device includes a mounting base, a support shaft assembly, a pressure roller disposed at one end of the support shaft assembly, an elastic pressure member connecting the mounting base and the other end of the support shaft assembly, and a rotating support member connecting the mounting base and the support shaft assembly. The rotating support member is located between the pressure roller and the elastic pressure member. The support shaft assembly can move in a lever-like manner with the rotating support member as a fulcrum, so that the pressure roller can move in the vertical direction.
[0006] As a further improved technical solution, the support shaft assembly includes a mandrel and a connecting shaft connected to the mandrel, wherein the diameter of the connecting shaft is larger than the diameter of the mandrel, and the pressure roller is mounted on the mandrel.
[0007] As a further improved technical solution, a connecting hole is provided on the connecting shaft that extends radially through it, and the connecting hole is an elongated hole.
[0008] As a further improved technical solution, the elastic pressure member includes a connecting rod inserted into the connecting hole and a spring sleeved on the connecting rod, wherein the spring is elastically compressed between the mounting base and the connecting shaft.
[0009] As a further improved technical solution, the elastic pressure-applying component includes a washer movably sleeved on the connecting rod, the lower end of the spring abutting against the washer, and the diameter of the washer being larger than the width of the connecting hole so that it cannot pass through the connecting hole in a horizontal position.
[0010] As a further improved technical solution, the rotating support includes a joint bearing.
[0011] As a further improved technical solution, the spherical bearing includes an outer ring body with a rod and an inner ring body with a spherical surface. The inner ring body is sleeved on the support shaft assembly, and the outer ring body is connected to the mounting base through the rod body.
[0012] As a further improved technical solution, the upper end of the rod is provided with a threaded hole, and the outer ring body is fixed by bolts passing through the mounting base and threadedly connected to the threaded hole of the rod.
[0013] As a further improved technical solution, the mandrel and the connecting shaft are separate components, and the connection between the mandrel and the connecting shaft is configured such that they are relatively fixed in the axial direction and can rotate relative to each other in the circumferential direction.
[0014] This application also achieves this through the following technical solution: a photovoltaic cleaning robot, which includes a walking beam, a brush roller, an upper drive device, a lower drive device, an upper pressure roller fixed to the upper drive device and a lower pressure roller fixed to the lower drive device, wherein at least one of the upper pressure roller and the lower pressure roller is a buffer pressure roller device as described above.
[0015] The buffer pressure roller device provided in this application includes a mounting base, a support shaft assembly, a pressure roller disposed at one end of the support shaft assembly, an elastic pressure-applying member connecting the mounting base and the other end of the support shaft assembly, and a rotating support member connecting the mounting base and the support shaft assembly. The rotating support member is located between the pressure roller and the elastic pressure-applying member. The support shaft assembly can move in a lever-like manner with the rotating support member as a fulcrum, so that the pressure roller can move in the vertical direction. This allows the cleaning robot to adapt to scenarios with changes in angle and height, such as climbing slopes. In these scenarios, the floating of the pressure roller device can prevent the pressure roller device from jamming, ensuring the normal operation of the cleaning robot. Attached Figure Description
[0016] Figure 1 This is a three-dimensional assembly diagram of an embodiment of the photovoltaic cleaning robot of this application.
[0017] Figure 2 This is a perspective view of an embodiment of the buffer pressure roller device of this application.
[0018] Figure 3 This is a perspective view of another embodiment of the buffer pressure roller device of this application.
[0019] Figure 4 This is an exploded perspective view of an embodiment of the buffer pressure roller device of this application.
[0020] Figure 5 This is a cross-sectional view of an embodiment of the buffer pressure roller device of this application.
[0021] The attached figures are labeled as follows: 100, Photovoltaic cleaning robot; 1, Buffer pressure roller device; 11, Mounting base; 12, Connecting rod; 121, Washer; 13, Bolt; 14, Spring; 15, Connecting shaft; 151, Connecting hole; 16, Pressure roller; 17, Mandrel; 18, Joint bearing; 181, Outer ring body; 182, Inner ring body; 191, Pressure roller fixing component; 192, Shaft fixing component; 2, Upper drive device; 3, Lower drive device; 4, Walking beam; 5, Brush roller. Detailed Implementation
[0022] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise specified, the technical features in the following embodiments can be combined with each other. The embodiments described below are merely some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0024] Please see Figure 1 As shown, this application provides a buffer pressure roller device 1 and a photovoltaic cleaning robot 100 having the buffer pressure roller device 1. The photovoltaic cleaning robot 100 is placed on a photovoltaic array and is used to move on the photovoltaic array to clean dust, debris, etc. on the photovoltaic array. The buffer pressure roller device 1 is installed on the photovoltaic cleaning robot 100 to support it under the photovoltaic array and prevent the photovoltaic cleaning robot 100 from tipping over.
[0025] Please see Figures 2 to 5As shown, the buffer pressure roller device 1 is installed on the photovoltaic cleaning robot to support it below the photovoltaic panel and prevent the robot from tipping over. In this embodiment, the buffer pressure roller device 1 includes a mounting base 11, a support shaft assembly, a pressure roller 16 disposed at one end of the support shaft assembly, an elastic pressure member connecting the mounting base 11 and the other end of the support shaft assembly, and a rotating support member connecting the mounting base 11 and the support shaft assembly. The rotating support member is located between the pressure roller 16 and the elastic pressure member, and the support shaft assembly can move in a lever-like manner with the rotating support member as a fulcrum, allowing the pressure roller 16 to move vertically. This enables the photovoltaic cleaning robot to adapt to scenarios with changes in angle and height, such as climbing slopes. In these scenarios, the floating movement of the buffer pressure roller device 1 prevents it from jamming, ensuring the normal operation of the photovoltaic cleaning robot.
[0026] Please continue reading. Figures 2 to 5 As shown, the mounting base 11 is a component used to mount the buffer pressure roller device 1 as a whole onto the photovoltaic cleaning robot. In this embodiment, the mounting base 11 is a mounting plate, which is fixed to the photovoltaic cleaning robot 100, so that the buffer pressure roller device 1 is hoisted as a whole, and the pressure roller 16 included in the buffer pressure roller device 1 extends to the bottom of the photovoltaic panel.
[0027] In this embodiment, the support shaft assembly includes a spindle 17 and a connecting shaft 15 connected to the spindle 17. The diameter of the connecting shaft 15 is larger than the diameter of the spindle 17, and the pressure roller 16 is mounted on the spindle 17. In this embodiment, the spindle 17 is a solid shaft with a small diameter, and the connecting shaft 15 is a shaft with a hollow hole and a large diameter. This arrangement makes it easy to manufacture a connecting hole 151 on the connecting shaft 15 that can provide a certain range of swing space, while the size and weight of the entire support shaft assembly are not too large. The connecting shaft 15 has a connecting hole 151 that extends radially through it. The connecting hole 151 is an elongated hole, so that the elastic pressure member connected to it can swing within a certain angle range within the connecting hole 151.
[0028] In this embodiment, the pressure roller 16 is a flexible wheel to avoid hard impact with the photovoltaic panel and damage. In one embodiment, the pressure roller 16 is made of polyurethane; in other embodiments, it can be made of other materials. The pressure roller 16 is sleeved on the spindle 17 and limited on the spindle 17 by a pressure roller fixing member 191. The pressure roller fixing member 191 is a screw fixed to the end of the spindle 17 along the axial direction, which prevents the pressure roller 16 from detaching from the spindle 17. In this embodiment, the spindle 17 and the connecting shaft 15 are separate parts, fixed together by a shaft fixing member 192, and the spindle 17 and the connecting shaft 15 are configured to be non-rotatable. In another embodiment, the connection between the spindle 17 and the connecting shaft 15 can be configured to be relatively fixed in the axial direction but able to rotate relatively in the circumferential direction. This allows the spindle 17 and its pressure roller 16 to rotate while ensuring that the connecting shaft 15 does not rotate, so as to roll into contact with the bottom surface of the photovoltaic panel and reduce friction. Specifically, the mandrel 17 may be provided with an annular groove, and the connecting shaft 15 is sleeved on the mandrel 17. A pin extends through a pin hole on the connecting shaft 15 into the annular groove, thus preventing relative axial movement between the connecting shaft 15 and the mandrel 17, while not affecting the circumferential rotational movement of the mandrel 17. Of course, in other embodiments, other structures can also be used to achieve axial relative fixation and circumferential relative rotational movement.
[0029] Please continue reading. Figures 2 to 5 As shown, in this embodiment, the elastic pressure-applying component includes a connecting rod 12 inserted into the connecting hole 151 and a spring 14 sleeved on the connecting rod 12. The spring 14 is elastically compressed between the mounting base 11 and the connecting shaft 15. The spring 14 is elastically compressed to keep the pressure roller 16 in a raised state, which can be a state where the mandrel 17 is approximately parallel to the mounting base 11. The elastic pressure-applying component also includes a washer 121 movably sleeved on the connecting rod 12. The lower end of the spring 14 abuts against the washer 121. The diameter of the washer 121 is larger than the width of the connecting hole 151 and cannot pass through the connecting hole 151 in a horizontal position. Since the washer 121 is movably sleeved on the connecting rod 12, when the connecting rod 12 swings in the connecting hole 151, the washer 121 can move upward or downward relative to the connecting rod 12 above the connecting hole 151, so that the spring 14 is smoothly compressed or released.
[0030] Please continue reading. Figures 2 to 5As shown, in this embodiment, the rotating support includes a spherical bearing 18. Specifically, in one embodiment, the rotating support includes a fisheye bearing. A spherical bearing or fisheye bearing, while fulfilling the function of a bearing, can also achieve a certain angle of oscillation. In this embodiment, the spherical bearing 18 includes an outer ring 181 with a rod and an inner ring 182 with a spherical surface. The inner ring 182 is sleeved on the spindle 17 of the support shaft assembly, and the outer ring 181 is connected to the mounting base 11 via the rod. The spherical bearing 18 connects the pressure roller 16 and the connecting shaft 15. The upper end of the rod has a threaded hole, and the outer ring 181 is fixed by a bolt 13 threaded through the mounting base 11 and threaded into the threaded hole of the rod.
[0031] See below. Figure 5 The movement process of the buffer pressure roller device 1 provided in this application is described as follows: Under normal circumstances, the pressure roller 16 does not contact the bottom surface of the photovoltaic panel, and there is a certain gap between them to reduce running resistance. When encountering a slope or uneven terrain, the pressure roller 16 is squeezed by the slope or protruding parts during the movement. The support shaft assembly formed by the pressure roller 16, the spindle 17, and the connecting shaft 15 uses the joint bearing 18 as the fulcrum. The end of the pressure roller 16 moves downward, and the other end moves upward to compress the elastic deformation of the spring 14. After passing the slope or protruding parts, under the action of the elastic restoring force of the spring 14, the end of the pressure roller 16 moves upward and returns to the normal state. It should be noted that the swing angle of the support shaft assembly formed by the pressure roller 16, the spindle 17, and the connecting shaft 15 should be set reasonably. If it is too small, the floating range will be small and it will not be able to effectively prevent jamming; if it is too large, it may not be able to prevent tipping. The swing angle can be achieved by setting the dimensional relationship between the connecting hole 151 and the connecting rod 12, the elastic force of the spring 14, the range of motion of the joint bearing 18, and setting a swing limit structure.
[0032] Please refer to it again. Figure 1 As shown, this application also provides a photovoltaic cleaning robot 100, which includes a walking beam 4, a brush roller 5, an upper drive device 2, a lower drive device 3, and an upper pressure roller fixed to the upper drive device 2 and a lower pressure roller fixed to the lower drive device 3. At least one of the upper and lower pressure rollers is a buffer pressure roller device 1 as described above. Both the upper drive device 2 and the lower drive device 3 include mounting brackets, and the upper and lower pressure rollers are correspondingly fixed on the mounting brackets.
[0033] As can be seen from the above description of the specific embodiments, the buffer pressure roller device 1 provided in this application includes a mounting base 11, a support shaft assembly, a pressure roller 16 disposed at one end of the support shaft assembly, an elastic pressure member connecting the mounting base 11 and the other end of the support shaft assembly, and a rotating support member connecting the mounting base 11 and the support shaft assembly. The rotating support member is located between the pressure roller 16 and the elastic pressure member. The support shaft assembly can move in a lever-like manner with the rotating support member as a fulcrum, so that the pressure roller 16 can move in the vertical direction. This allows the cleaning robot to adapt to scenarios with changes in angle and height, such as climbing slopes. In these scenarios, due to the floating of the pressure roller device 1, the pressure roller device 1 can be prevented from jamming, ensuring the normal operation of the cleaning robot.
[0034] This application is illustrated through several specific embodiments. Those skilled in the art will understand that various modifications and equivalent substitutions can be made to this application without departing from its scope. Furthermore, various modifications can be made to this application for specific situations or circumstances without departing from the scope of this utility model. Therefore, this application is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this application.
Claims
1. A bumper wheel device, installed on a photovoltaic cleaning robot, for supporting under a photovoltaic panel to prevent the photovoltaic cleaning robot from tipping over, characterized in that, The buffer pressure roller device comprises a mounting base, a support shaft assembly, a pressure roller arranged at one end of the support shaft assembly, an elastic pressure applying member connecting the mounting base and the other end of the support shaft assembly, and a rotating support member connecting the mounting base and the support shaft assembly, the rotating support member being located between the pressure roller and the elastic pressure applying member, and the support shaft assembly being able to perform lever movement with the rotating support member as a fulcrum so that the pressure roller is able to move in the up-down direction.
2. The cushioning press wheel apparatus of claim 1, wherein, The support shaft assembly comprises a core shaft and a connecting shaft connected to the core shaft, the diameter of the connecting shaft being greater than that of the core shaft, and the pressure roller being mounted on the core shaft.
3. The cushioning press wheel apparatus of claim 2, wherein, The connecting shaft is provided with a connecting hole penetrating through in the radial direction thereof, the connecting hole being an elongated hole.
4. The cushioning press wheel apparatus of claim 3, wherein, The elastic pressure applying member comprises a connecting rod inserted into the connecting hole and a spring sleeved on the connecting rod, the spring being elastically compressed between the mounting base and the connecting shaft.
5. The cushioning press wheel apparatus of claim 4, wherein, The elastic pressure applying member comprises a washer movably sleeved on the connecting rod, the lower end of the spring abutting against the washer, and the diameter of the washer being greater than the width of the connecting hole so that the washer cannot pass through the connecting hole in a horizontal posture.
6. The cushioning press wheel apparatus of claim 1, wherein, The rotating support member comprises a knuckle bearing.
7. The cushioning press wheel apparatus of claim 6, wherein, The knuckle bearing comprises an outer ring body with a rod body and an inner ring body with a spherical surface, the inner ring body being sleeved on the support shaft assembly, and the outer ring body being connected to the mounting base through the rod body.
8. The cushioning press wheel apparatus of claim 7, wherein, The upper end of the rod body is provided with a threaded hole, and the outer ring body is fixedly connected to the threaded hole of the rod body through a bolt passing through the mounting base.
9. The cushioning press wheel apparatus of claim 2, wherein, The core shaft and the connecting shaft are separate parts, and the connection between the core shaft and the connecting shaft is configured to be relatively fixed in the axial direction and relatively rotatable in the circumferential direction.
10. A photovoltaic cleaning robot, characterized in that The buffer pressure roller device comprises a mounting base, a support shaft assembly, a pressure roller arranged at one end of the support shaft assembly, an elastic pressure applying member connecting the mounting base and the other end of the support shaft assembly, and a rotating support member connecting the mounting base and the support shaft assembly, the rotating support member being located between the pressure roller and the elastic pressure applying member, and the support shaft assembly being able to perform lever movement with the rotating support member as a fulcrum so that the pressure roller is able to move in the up-down direction. The support shaft assembly comprises a core shaft and a connecting shaft connected to the core shaft, the diameter of the connecting shaft being greater than that of the core shaft, and the pressure roller being mounted on the core shaft. The connecting shaft is provided with a connecting hole penetrating through in the radial direction thereof, the connecting hole being an elongated hole. The elastic pressure applying member comprises a connecting rod inserted into the connecting hole and a spring sleeved on the connecting rod, the spring being elastically compressed between the mounting base and the connecting shaft. The elastic pressure applying member comprises a washer movably sleeved on the connecting rod, the lower end of the spring abutting against the washer, and the diameter of the washer being greater than the width of the connecting hole so that the washer cannot pass through the connecting hole in a horizontal posture. The rotating support member comprises a knuckle bearing. The knuckle bearing comprises an outer ring body with a rod body and an inner ring body with a spherical surface, the inner ring body being sleeved on the support shaft assembly, and the outer ring body being connected to the mounting base through the rod body. The upper end of the rod body is provided with a threaded hole, and the outer ring body is fixedly connected to the threaded hole of the rod body through a bolt passing through the mounting base. The core shaft and the connecting shaft are separate parts, and the connection between the core shaft and the connecting shaft is configured to be relatively fixed in the axial direction and relatively rotatable in the circumferential direction. The buffer pressure roller device comprises a mounting base, a support shaft assembly, a pressure roller arranged at one end of the support shaft assembly, an elastic pressure applying member connecting the mounting base and the other end of the support shaft assembly, and a rotating support member connecting the mounting base and the support shaft assembly, the rotating support member being located between the pressure roller and the elastic pressure applying member, and the support shaft assembly being able to perform lever movement with the rotating support member as a fulcrum so that the pressure roller is able to move in the up-down direction.