A suction cup rotating and lifting structure and a cleaning cart

Abstract

This invention provides a suction cup rotation and lifting structure and a cleaning cart. In the provided suction cup rotation and lifting structure: the front end of a rotating boss is rotatably connected to the frame of the cleaning cart; the linkage support unit includes upper and lower linkage supports arranged parallel to each other, the upper linkage support including an upper support portion and upper linkage portions respectively connected to its left and right sides; the lower linkage support including a lower support portion and lower linkage portions respectively connected to its left and right sides; each linkage portion; the front ends of both the upper and lower linkage portions are rotatably connected to the rear end of the rotating boss; the rear end of each upper / lower linkage portion is rotatably connected to the front end of a connecting seat, and the rear end of each lower / upper linkage portion is angle-adjustably locked to the front end of the connecting seat along an arc-shaped trajectory, the center of the arc-shaped trajectory being located at the rotatable connection point between the upper / lower linkage portion and the connecting seat on the same side; the suction cup body is detachably connected to the rear end of the connecting seat; a drive unit is connected to the linkage support unit to drive the linkage support unit to move up and down.

Description

Technical Field

[0001] This invention belongs to the field of cleaning equipment technology, and in particular relates to a suction cup rotation and lifting structure and a cleaning cart. Background Technology

[0002] Currently, the suction squeegee structures equipped on medium and large-sized cleaning vehicles are mostly designed with a fixed angle, or only use simple hydraulic lifting mechanisms. In actual use, they mainly have the following technical defects: 1. The grounding angle is not adjustable: The contact angle between the suction cup and the ground is fixed, which cannot be adapted to different road conditions and types of stains, thus limiting the cleaning effect; 2. Uneven ground pressure: The suction squeegee relies solely on its own weight to press against the ground. When the road surface is uneven or has local irregularities, it is easy for some parts to be suspended or not to fit tightly, resulting in incomplete sewage recycling. 3. Poor coordination between lifting and rotation: The lifting action relies heavily on the direct lifting of hydraulic cylinders, resulting in insufficient structural rigidity and easy deformation after long-term use; the rotation flexibility is poor and the response speed is slow.

[0003] Therefore, there is still much room for improvement in the design of the suction cup rotation and lifting structure. Summary of the Invention

[0004] In view of the problems existing in the prior art, the main objective of the present invention is to provide a suction cup rotation and lifting structure and a cleaning vehicle. The provided suction cup rotation and lifting structure ensures the stability of the suction cup's posture during lifting through a parallel four-bar linkage mechanism, achieves angle adjustment and locking between the suction cup and the ground through the cooperation of arc-shaped holes and adjusting bolts, and provides uniform elastic pressure through symmetrically arranged elastic elements, so that the suction cup adapts to the undulations of the ground and improves the cleaning effect.

[0005] The objective of this invention is achieved through the following technical solution: This invention provides a suction cup rotation and lifting structure, the suction cup rotation and lifting structure comprising: A rotating boss, the front end of which is rotatably connected to the frame of the cleaning vehicle about a vertical axis; A linkage support unit includes an upper linkage support and a lower linkage support arranged parallel to each other. The upper linkage support includes an upper support portion and upper linkage portions respectively connected to the left and right sides of the upper support portion. The lower linkage support includes a lower support portion and lower linkage portions respectively connected to the left and right sides of the lower support portion. The upper linkage portions and lower linkage portions are of equal length. The front end of each upper linkage portion and lower linkage is rotatably connected to the rear end of the rotating boss about a horizontal axis. The connecting seat is provided in which the rear end of each lower connecting rod is rotatably connected to the front end of the connecting seat about a horizontal axis, and the rear end of each upper connecting rod is angle-adjustably locked to the front end of the connecting seat along an arc-shaped trajectory, the center of which is located at the rotatable connection point between the lower connecting rod and the connecting seat on the same side; or The rear end of each upper connecting rod is rotatably connected to the front end of the connecting seat about a horizontal axis, and the rear end of each lower connecting rod is angle-adjustably locked to the front end of the connecting seat along an arc trajectory, the center of the arc trajectory being located at the rotatable connection point between the upper connecting rod and the connecting seat on the same side. A suction cup body, which is detachably connected to the rear end of the connector; A drive unit is connected to the linkage support unit to drive the linkage support unit to move up and down.

[0006] As a further description of the above technical solution, the connecting seat includes a first vertical wall extending in the left-right direction, and a second vertical wall and a third vertical wall respectively connected to both ends of the first vertical wall; The first vertical wall is provided with a first through hole; Both the second and third vertical walls are provided with a second through hole, which is arc-shaped; The two ends of a fixing screw pass through the second through hole and are connected to the upper connecting rod or the lower connecting rod. An adjusting bolt is threaded into the first through hole, and its end, which passes between the second and third vertical walls, abuts against the outer wall of the fixing screw.

[0007] As a further description of the above technical solution, it also includes a transmission mechanism, through which the drive unit is connected to the connecting rod support unit.

[0008] As a further description of the above technical solution, the drive unit is arranged horizontally, the transmission mechanism includes a traction member and a reversing member, one end of the traction member is connected to the telescopic end of the drive unit, and the other end is connected to the upper connecting rod bracket or the lower connecting rod bracket, and the traction member passes around the reversing member.

[0009] As a further description of the above technical solution, the traction component is a chain, and the reversing component is a roller rotatably connected above the connecting rod support unit.

[0010] As a further description of the above technical solution, an elastic element is also connected between the upper connecting rod or the lower connecting rod and the frame of the cleaning vehicle, and the two elastic elements are symmetrically distributed.

[0011] As a further description of the above technical solution, the suction cup body is detachably connected to one end of the connecting seat via a quick-release connector.

[0012] As a further description of the above technical solution, the quick-release connector is a cross handle, and the connecting seat is provided with a connecting part that mates with it.

[0013] As a further description of the above technical solution, the bottom of the suction cup body is detachably connected with an adhesive strip.

[0014] The present invention also provides a cleaning vehicle, including the suction cup rotation and lifting structure described above.

[0015] By employing the above technical solutions, the outstanding effects of this invention are as follows: 1. The suction cup rotation and lifting structure provided by the present invention forms a parallelogram linkage mechanism by upper and lower parallel and equal length connecting rods, connecting boss and connecting seat, which ensures that the pitch angle of the suction cup body is constant during the lifting process, always maintains the best working posture, and the cleaning effect is stable. At the same time, the parallelogram linkage structure can also improve the overall structural rigidity and pressure bearing capacity. 2. In the suction cup rotation and lifting structure provided by the present invention, the rear end of the lower (upper) connecting rod is rotatably connected to the connecting seat to form a rotation fulcrum. The rear end of the upper (lower) connecting rod is locked to the connecting seat at an adjustable angle along an arc-shaped trajectory. The circle of the arc-shaped trajectory is located at the rotation center of the lower (upper) connecting rod and the connecting seat on the same side. By adjusting the locking position of the rear end of the upper (lower) connecting rod on the arc-shaped trajectory, the initial contact angle between the suction cup body and the ground can be effectively adjusted to adapt to different road conditions (such as flat roads, slopes, etc.) and stain types (such as stubborn stains), making cleaning more targeted. 3. In the suction cup rotation and lifting structure provided by the present invention, an elastic element is connected between the two upper (lower) connecting rods and the frame of the cleaning vehicle. The two elastic elements are symmetrically distributed and their angles are adjustable in conjunction with the suction cup body, so that the suction cup can remove dirt from the ground more efficiently, especially for stubborn dirt and uneven road surfaces. According to uncertainty tests, the cleaning efficiency is improved by more than 30%. 4. In the suction cup rotation and lifting structure provided by the present invention, the cooperation between the chain drive and the reset spring assembly can effectively reduce impact and extend the service life of the equipment; 5. In the suction cup rotation and lifting structure provided by the present invention, chain drive is used to ensure the synchronization and stability of the lifting action of the suction cup body. The rotation and lifting actions can be controlled independently, with fast response speed, thus improving the efficiency of cleaning operations. Attached Figure Description

[0016] Figure 1 This is a partial structural diagram of the suction cup rotation and lifting structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of the suction cup rotation and lifting structure applied to a cleaning vehicle in an embodiment of the present invention.

[0017] Explanation of icon numbers: 1. Rotating boss; 2. Frame; 3. Upper connecting rod; 4. Lower connecting rod; 5. Connecting seat; 6. Suction cup body; 7. Drive unit; 8. First vertical wall; 9. Second vertical wall; 10. Third vertical wall; 11. Second through hole; 12. Fixing screw; 13. Adjusting bolt; 14. Traction component; 15. Reversing component; 16. Elastic component; 17. Quick-release connector; 18. Rubber strip. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "upper," "middle," "lower," "inner," "outer," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or mechanism referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0020] Please see Figures 1 to 2 This invention discloses a suction cup rotation and lifting structure, the suction cup rotation and lifting structure comprising: Rotate boss 1, the front end of which is rotatably connected to the frame 2 of the cleaning vehicle around a vertical axis; The linkage support unit includes an upper linkage support and a lower linkage support arranged parallel to each other. The upper linkage support includes an upper support portion and upper linkage portions 3 connected to the left and right sides of the upper support portion respectively. The lower linkage support includes a lower support portion and lower linkage portions 4 connected to the left and right sides of the lower support portion respectively. The upper linkage portions 3 and lower linkage portions 4 are of equal length. The front end of each upper linkage portion 3 and lower linkage is rotatably connected to the rear end of the rotating boss 1 about a horizontal axis. The connecting seat 5, wherein the rear end of each lower connecting rod 4 is rotatably connected to the front end of the connecting seat 5 about a horizontal axis, and the rear end of each upper connecting rod 3 is angle-adjustably locked to the front end of the connecting seat 5 along an arc-shaped trajectory, the center of the arc-shaped trajectory being located at the rotatable connection point between the lower connecting rod 4 and the connecting seat 5 on the same side; or, The rear end of each upper connecting rod 3 is rotatably connected to the front end of the connecting seat 5 about a horizontal axis, and the rear end of each lower connecting rod 4 is locked to the front end of the connecting seat 5 at an adjustable angle along an arc trajectory. The center of the arc trajectory is located at the rotatable connection point between the upper connecting rod 3 and the connecting seat 5 on the same side. The suction cup body 6 is detachably connected to the rear end of the connecting seat 5; A drive unit 7 is connected to the linkage support unit to drive the linkage support unit to move up and down.

[0021] In the above configuration, the front end of the rotating boss 1 is rotatably connected to the rear end of the frame 2 of the cleaning vehicle around a vertical axis, thereby enabling the suction squeegee to swing horizontally, thus improving obstacle avoidance and edge cleaning capabilities. The front ends of the upper and lower connecting rods 4 are rotatably connected to the rear end of the rotating boss 1 around a horizontal line. Simultaneously, the upper connecting rod 3 and the lower connecting rod 4 are arranged parallel to each other and have equal lengths. Therefore, the rotating boss 1, the upper connecting rod 3, the lower connecting rod 4, and the connecting seat 5 connected to the rear end of the connecting rod support unit together form a parallelogram-shaped linkage mechanism. Thus, when the drive unit 7 drives the connecting rod support to move up and down, the suction squeegee body 6 connected to the rear end of the connecting seat 5 is simultaneously driven to rise and fall synchronously. Due to the geometric constraints of the parallelogram, the pitch posture of the suction squeegee body 6 remains constant, ensuring stable cleaning results. Furthermore, the structural state of this linkage mechanism also improves the overall structural rigidity and load-bearing capacity. Meanwhile, the rear end of each lower connecting rod 4... Each of the upper connecting rod parts 3 is rotatably connected to the front end of the connecting seat 5 about a horizontal axis, and the rear end of each upper connecting rod part 3 is angle-adjustably locked to the front end of the connecting seat 5 along an arc-shaped trajectory, the center of which is located at the rotatable connection point between the lower connecting rod part 4 and the connecting seat on the same side; or, the rear end of each upper connecting rod part 3 is rotatably connected to the front end of the connecting seat 5 about a horizontal axis, and the rear end of each lower connecting rod part 4 is angle-adjustably locked to the front end of the connecting seat 5 along an arc-shaped trajectory. The ground-locking connection is adjusted so that the center of the arc-shaped trajectory is located at the rotational connection between the upper connecting rod 3 and the connecting seat 5 on the same side. Therefore, by taking the rotational connection between the lower connecting rod 4 or the upper connecting rod 3 and the connecting seat 5 as the center, adjusting the locking position of the rear end of the upper connecting rod 3 or the lower connecting rod 4 on the arc-shaped trajectory can effectively adjust the initial contact angle between the suction cup body 6 and the ground, adapting to different road conditions (such as flat roads, slopes, etc.) and stain types (such as stubborn stains), resulting in more targeted cleaning. Please refer to [link / reference]. Figure 2 Specifically, in this embodiment, the suction squeegee body 6 is a component that directly contacts the ground to perform cleaning operations, and its bottom is detachably connected with a rubber strip 18, which can be made of wear-resistant rubber and can be replaced after wear.

[0022] Specifically, in this embodiment, the suction cup body 6 is detachably connected to the rear end of the connecting seat 5 via a quick-release connector 17, facilitating the rapid installation and removal of the suction cup body 6 and greatly simplifying maintenance and replacement operations. The quick-release connector 17 is a (bakelite) cross handle, and the connecting seat 5 has a matching connecting part (e.g., a threaded connecting hole), allowing operators to complete the installation and removal of the suction cup body 6 without tools, simply by manually turning the (bakelite) cross handle.

[0023] Please see Figure 1Specifically, in this embodiment, the linkage bracket unit is the core motion mechanism connecting the frame 2 of the cleaning vehicle and the connecting seat 5. It includes an upper linkage bracket and a lower linkage bracket arranged parallel to each other. The upper linkage bracket includes an upper bracket portion and upper linkage portions 3 respectively connected to the left and right sides of the upper bracket portion; the lower linkage bracket includes a lower bracket portion and lower linkage portions 4 respectively connected to the left and right sides of the lower bracket portion; the upper linkage portions 3 and lower linkage portions 4 are of equal length; the front end of each upper linkage portion 3 and lower linkage portion 4 is rotatably connected to the rear end of the rotating boss 1 about a horizontal axis, so that the linkage bracket unit as a whole can swing left and right in the horizontal plane relative to the frame 2, thereby allowing the suction squeegee body 6 to bypass obstacles or perform contour cleaning along the curb during movement. The rear end of each lower linkage portion 4 is rotatably connected to the front end of the connecting seat 5 about a horizontal axis, that is, forming a hinge. The rear end of each upper connecting rod 3 is not directly hinged to the front end of the connecting seat 5, but is locked to the connecting seat 5 at an adjustable angle along an arc-shaped trajectory. This arc-shaped trajectory is defined by an arc-shaped hole (second through hole 11) provided on the connecting seat 5, and its center is precisely located at the rotational connection point (i.e., hinge point) between the lower connecting rod 4 and the connecting seat 5 on the same side. This structure allows the rear end of the upper connecting rod 3 to move in an arc around the hinge point of the rear end of the lower connecting rod 4, thereby changing the pitch angle of the connecting seat 5. Of course, in other embodiments, the rear end of each upper connecting rod 3 can also be rotatably connected to the front end of the connecting seat 5 about a horizontal axis, and the rear end of each lower connecting rod 4 can be locked to the rear end of the connecting seat 5 at an adjustable angle along an arc-shaped trajectory, with the center of the arc-shaped trajectory located at the rotational connection point between the upper connecting rod 3 and the connecting seat 5 on the same side.

[0024] Specifically, in this embodiment, the connecting seat 5 includes a first vertical wall 8 extending in a left-right direction, and a second vertical wall 9 and a third vertical wall 10 respectively perpendicularly connected to both ends of the first vertical wall 8, forming a U-shaped structure. The first vertical wall 8 has a first through hole with internal threads, and the second vertical wall 9 and the third vertical wall 10 each have an arc-shaped second through hole 11 (i.e., an arc-shaped hole). The two ends of a fixing screw 12 pass through the second through holes 11 on the left and right sides respectively, and are connected to the rear ends of the two upper connecting rod portions 3. An adjusting bolt 13 is threaded into the first through hole, and its tail (i.e., the end that passes between the second vertical wall 9 and the third vertical wall 10) can abut against the outer wall of the fixing screw 12. Therefore, when it is necessary to adjust the pitch angle of the suction cup body 6, the adjusting bolt 13, which is tightened against the outer wall of the fixing screw 12, can be loosened first. This allows the fixing screw 12 to move along the arc-shaped wall of the second through hole 11. Since the center of the second through hole 11 is the hinge point between the lower connecting rod 4 and the connecting seat 5, the movement of the fixing screw 12 will cause the rear end of the upper connecting rod 3 to rotate around the hinge point. This, in turn, drives the entire connecting seat 5 and the suction cup body 6 fixed thereon to rotate around the same hinge point, thereby achieving the adjustment of the pitch angle. This effectively adjusts the initial contact angle between the suction cup body 6 and the ground to adapt to different road conditions (such as flat roads, slopes, etc.) and stain types (such as stubborn stains), making cleaning more targeted. After adjusting to the desired angle position, the adjusting bolt 13 is tightened again to fix the angle. The adjusting bolt 13 then serves as a limit or auxiliary support.

[0025] Specifically, in this embodiment, a transmission mechanism is also included, through which the drive unit 7 is connected to the linkage support unit. More specifically, the drive unit 7 is arranged horizontally, and the transmission mechanism includes a traction member 14 and a reversing member 15. One end of the traction member 14 is connected to the telescopic end of the drive unit 7, and the other end is connected to the lower linkage support, with the traction member 14 passing around the reversing member 15. For example, the drive unit 7 is an electric push rod, the traction member 14 is a chain, and the reversing member 15 is a roller rotatably connected above the linkage support unit. When the electric push rod extends or retracts, the horizontal movement can be converted into the vertical lifting and lowering movement of the lower linkage 4 through the reversing action of the chain and the roller, thereby driving the entire linkage support unit to lift and lower, thus achieving the smooth lifting and lowering of the suction cup body 6. Of course, in other embodiments, the other end of the traction member 14 may also be connected to the upper linkage support.

[0026] Please see Figures 1 to 2Specifically, in this embodiment, an elastic element 16 (e.g., a tension spring) is connected between each of the two upper connecting rods 3 and the frame 2 of the cleaning vehicle. The two elastic elements 16 are symmetrically distributed, thereby providing continuous and uniform elastic pressure to the suction cup body 6, allowing it to adapt to ground undulations, avoid local suspension, ensure a tight fit, and thus improve wastewater recycling efficiency. The principle is that the elastic element 16 is always in a stretched state, continuously applying downward elastic pressure according to Hooke's Law; the symmetrical arrangement on both sides allows the elastic elements 16 to extend and retract independently, providing corresponding pressure according to the terrain on each side, achieving uniform pressure distribution; the elastic connection gives the suction cup body 6 the freedom to passively float up and down, yielding to protrusions and automatically pressing against depressions, requiring no electrical control and responding quickly. The arrangement of the elastic element 16, combined with the adjustable angle of the suction cup body 6, allows the suction cup to remove ground stains more efficiently, especially for stubborn stains and uneven surfaces. Uncertainty testing shows that cleaning efficiency is improved by more than 30%. It should be understood that the stiffness of the elastic element 16 can be selected according to the actual tonnage of the cleaning vehicle and the operating scenario to adapt to different working conditions. Of course, in other embodiments, the two elastic elements 16 can also be symmetrically distributed between the two lower connecting rods 4 and the frame of the cleaning vehicle.

[0027] Specifically, this embodiment also discloses a cleaning vehicle, including the suction cup rotation and lifting structure described above.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any changes, 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 suction cup rotation and lifting structure, characterized in that, include: A rotating boss, the front end of which is rotatably connected to the frame of the cleaning vehicle about a vertical axis; A linkage support unit includes an upper linkage support and a lower linkage support arranged parallel to each other. The upper linkage support includes an upper support portion and upper linkage portions respectively connected to the left and right sides of the upper support portion. The lower linkage support includes a lower support portion and lower linkage portions respectively connected to the left and right sides of the lower support portion. The upper linkage portions and lower linkage portions are of equal length. The front end of each upper linkage portion and lower linkage is rotatably connected to the rear end of the rotating boss about a horizontal axis. The connecting seat is provided in which the rear end of each lower connecting rod is rotatably connected to the front end of the connecting seat about a horizontal axis, and the rear end of each upper connecting rod is angle-adjustably locked to the front end of the connecting seat along an arc-shaped trajectory, the center of which is located at the rotatable connection point between the lower connecting rod and the connecting seat on the same side; or The rear end of each upper connecting rod is rotatably connected to the front end of the connecting seat about a horizontal axis, and the rear end of each lower connecting rod is angle-adjustably locked to the front end of the connecting seat along an arc trajectory, the center of the arc trajectory being located at the rotatable connection point between the upper connecting rod and the connecting seat on the same side. A suction cup body, which is detachably connected to the rear end of the connector; A drive unit is connected to the linkage support unit to drive the linkage support unit to move up and down.

2. The suction cup rotation and lifting structure according to claim 1, characterized in that, The connecting seat includes a first vertical wall extending in the left-right direction, and a second vertical wall and a third vertical wall respectively connected to both ends of the first vertical wall; The first vertical wall is provided with a first through hole; Both the second and third vertical walls are provided with a second through hole, which is arc-shaped; The two ends of a fixing screw pass through the second through hole and are connected to the upper connecting rod or the lower connecting rod. An adjusting bolt is threaded into the first through hole, and its end, which passes between the second and third vertical walls, abuts against the outer wall of the fixing screw.

3. The suction cup rotation and lifting structure according to claim 1, characterized in that, It also includes a transmission mechanism, through which the drive unit is connected to the linkage support unit.

4. The suction cup rotation and lifting structure according to claim 3, characterized in that, The drive unit is arranged horizontally, and the transmission mechanism includes a traction member and a reversing member. One end of the traction member is connected to the telescopic end of the drive unit, and the other end is connected to the upper or lower connecting rod bracket. The traction member passes around the reversing member.

5. The suction cup rotation and lifting structure according to claim 4, characterized in that, The traction component is a chain, and the reversing component is a roller rotatably connected above the connecting rod support unit.

6. The suction cup rotation and lifting structure according to claim 1, characterized in that, Each of the upper or lower connecting rods is further connected to the frame of the cleaning vehicle by an elastic element, and the two elastic elements are symmetrically distributed.

7. The suction cup rotation and lifting structure according to claim 1, characterized in that, The suction cup body is detachably connected to one end of the connector via a quick-release connector.

8. The suction cup rotation and lifting structure according to claim 7, characterized in that, The quick-release connector is a cross handle, and the connector seat has a connecting part that mates with it.

9. The suction cup rotation and lifting structure according to claim 1, characterized in that, The bottom of the suction cup body is detachably connected with an adhesive strip.

10. A cleaning vehicle, characterized in that, Includes the suction cup rotation and lifting structure as described in any one of claims 1-9.

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