An elastic anti-collision side brush device and a sweeping machine

Abstract

The application provides an elastic anti-collision side brush device and a sweeper, which comprises a telescopic assembly, a lifting assembly and an outer swing assembly. The outer swing assembly comprises an outer swing fixed support, an outer swing rotating support, an outer swing torsional spring, an outer swing limiting column and a torsion adjusting column. The outer swing limiting column is located at the front end of the outer swing torsional spring in the vehicle length direction and is fixedly connected with the outer swing fixed support. The outer swing rotating support is provided with a limiting plate on the outer periphery of the first hinge rod, and the limiting plate is adjacent to the outer swing limiting column. The outer swing rotating support is provided with a plurality of positioning holes on the outer periphery of the outer swing torsional spring. The plurality of positioning holes are arranged along the radial direction of the first hinge rod. The torsion adjusting column is connected with one of the positioning holes. The second end of the outer swing torsional spring is in abutment with the torsion adjusting column. The resilience of the outer swing torsional spring will decrease after long-time use. Therefore, the torsion adjusting column can be selectively connected with one of the positioning holes, so that the torsion of the outer swing torsional spring can be adjusted.

Description

Technical Field

[0001] This invention relates to the field of new energy sanitation equipment, and in particular to a flexible anti-collision side brush device and a sweeper. Background Technology

[0002] Commercially available floor sweepers typically have wheels for traveling along the ground, at least one rotating sweeping brush for cleaning the ground, and a suction device. These floor sweepers can be used to clean surfaces such as streets, sidewalks, parks, or parking lots.

[0003] Sweepers typically travel in vehicle form. The suction device can be located in the rear area of ​​the vehicle, while the vehicle can have a driver's seat in the front area. The sweeping brush is positioned in front of the sweeper in the direction of travel. When sweeping is needed, the sweeping brush is lowered and opened, and the brush is driven to rotate. When sweeping is not needed, the sweeping brush is raised and retracted, thereby improving travel efficiency.

[0004] In addition, sweepers need to have a wide sweeping width and can pass through and operate smoothly when traversing narrow roads. Existing sweepers generally use springs to retract upon impact in narrow roads or electrically retract side brushes to reduce the sweeper's passing width. This results in a complex structure and relatively limited functionality. Furthermore, some existing models cannot clean roadside steps, making them unsuitable for complex work areas. Summary of the Invention

[0005] The first objective of this invention is to provide a flexible, anti-collision side brush device.

[0006] A second objective of the present invention is to provide a sweeper having the aforementioned side brush device.

[0007] To achieve the first objective of this invention, the present invention provides an elastic anti-collision side brush device, comprising a telescopic component, a lifting component, and an outward swing component. The telescopic component includes a telescopic drive device, a telescopic fixed bracket, and a telescopic rotating bracket. The lifting component includes a lifting drive device and a lifting linkage. The telescopic rotating bracket is hinged to the telescopic fixed bracket. The telescopic drive device is connected to the telescopic rotating bracket and drives the telescopic rotating bracket to rotate in the horizontal direction. The fixed ends of the lifting drive device and the lifting linkage are respectively hinged to the telescopic rotating bracket. The free end of the lifting drive device is hinged to the lifting linkage. The lifting drive device and the lifting linkage can rotate in the vertical direction. The outward swing component includes a sweeping brush, a sweeping brush drive device, an outward swing fixed bracket, an outward swing rotating bracket, an outward swing torsion spring, an outward swing limiting post, and a torque adjusting post. The outward swing fixed bracket is hinged to the free end of the lifting linkage. The lifting link can move vertically along its free end; the outer swing fixed bracket and the outer swing rotating bracket are hinged together by the first hinge rod. The lifting link extends along the length of the vehicle, and the outer swing rotating bracket extends along the width of the vehicle and can rotate horizontally. The sweeping brush drive device is mounted on the outer swing rotating bracket, and the sweeping brush is connected to the sweeping brush drive device. The outer swing torsion spring is sleeved on the first hinge rod, and the first end of the outer swing torsion spring abuts against the outer swing fixed bracket. The outer swing limiting post is located at the front end of the outer swing torsion spring in the length of the vehicle and is fixedly connected to the outer swing fixed bracket. The outer swing rotating bracket is provided with a limiting plate on the outer periphery of the first hinge rod, and the limiting plate can be adjacent to the outer swing limiting post. The outer swing rotating bracket is provided with multiple positioning holes on the outer periphery of the outer swing torsion spring. The multiple positioning holes are arranged radially along the first hinge rod. The torque adjusting post can be connected to one of the positioning holes, and the second end of the outer swing torsion spring abuts against the torque adjusting post.

[0008] As can be seen from the above scheme, the brush can be driven to extend and retract horizontally by the telescopic component and to rise and fall vertically by the lifting component, thus allowing the brush to adapt to different cleaning widths and heights. Furthermore, the outer swing torsion spring elastically abuts against the outer swing fixed bracket and the outer swing rotating bracket, thereby enabling the outer swing fixed bracket to move elastically in the horizontal direction. When encountering obstacles, the brush can achieve elastic anti-collision in the horizontal direction. Moreover, the rebound force of the outer swing torsion spring will decrease after long-term use. Therefore, the torque adjustment column can be selectively connected to a positioning hole to achieve torque adjustment of the outer swing torsion spring. The adjacency of the limiting plate and the outer swing limiting column is used to limit the outer swing rotating bracket to relatively fix the position of the brush.

[0009] A further proposed solution is that the external swing fixed bracket is provided with a first C-shaped mounting groove that runs vertically through the bracket and a second C-shaped mounting groove that runs horizontally through the bracket, and the external swing rotating bracket is provided with a third C-shaped mounting groove that extends horizontally. The free end of the lifting link is hinged in the first C-shaped mounting groove, the end of the external swing rotating bracket is connected in the second C-shaped mounting groove, the first hinge rod passes through the end of the external swing rotating bracket and the second C-shaped mounting groove, and the external swing torsion spring is located in the third C-shaped mounting groove.

[0010] As can be seen from the above, the C-shaped mounting slots extending in different directions facilitate the assembly and connection of the lifting linkage and the outward swing rotation bracket in different directions. Furthermore, by using the first hinge rod to pass through the second and third C-shaped mounting slots, the assembly and operation of the outward swing rotation bracket and the outward swing torsion spring are made more stable.

[0011] A further proposed solution is to arrange the outer swing limit post vertically and pass through the second C-shaped mounting groove.

[0012] A further proposed solution is to have multiple positioning holes extending vertically through the third C-shaped mounting groove, with torque adjustment columns arranged vertically and connected to the outward swing bracket.

[0013] As can be seen from the above, the vertically arranged outward swing limiting column can stably restrict the position of the outward swing rotation bracket, and the positioning hole penetrates the third C-shaped mounting groove, which allows the torque adjustment column to be stably assembled into the second C-shaped mounting groove.

[0014] A further proposed solution is that the lifting assembly includes two lifting links arranged in a plate-like manner. The two lifting links are arranged parallel to each other in the vertical direction and hinged between the telescopic rotating bracket and the first C-shaped mounting slot. The two lifting links are provided with through holes in the vertical direction, and the lifting drive device is located in the two through holes.

[0015] A further proposed solution is to hinge the free end of the lifting drive device to the lifting linkage located below.

[0016] As can be seen from the above, by arranging two lifting links in parallel along the vertical direction to form a parallelogram lifting structure, the stability of the lifting operation is improved. Furthermore, by setting through holes to place the lifting drive device, the space of the lifting structure is effectively utilized, the volume of the lifting structure is reduced, and the free end is hinged to the lifting link below to facilitate the lifting and rotation operation of the lifting link and the lifting drive device.

[0017] A further proposed solution is to install a vertically extending lifting limit post at the rear end of the fixed end of the telescopic rotating bracket based on the vehicle length direction. The lifting limit post can be adjacent to the lifting drive device.

[0018] As can be seen from the above, the lifting position of the lifting linkage and the lifting drive device can be limited by the lifting limit column.

[0019] A further embodiment is that the telescopic fixed bracket and the telescopic rotating bracket are hinged together by a second hinge rod. The telescopic assembly also includes a telescopic torsion spring, which is sleeved outside the second hinge rod and abuts against the telescopic fixed bracket and the telescopic rotating bracket. The drive end of the telescopic drive device is provided with a telescopic slide groove extending in the horizontal direction. The telescopic rotating bracket is provided with a telescopic limiting post, which passes through the telescopic slide groove and can move within the telescopic slide groove.

[0020] A further embodiment is that the outward swing bracket extends outward toward the second hinge rod in the vehicle width direction; the telescopic assembly also includes a rotation limiting post, which is located on the outside of the second hinge rod in the vehicle width direction and is fixedly connected to the telescopic fixed bracket, and the rotation limiting post can be adjacent to the telescopic swing bracket; the telescopic slide and the rotation limiting post are both located on the inside of the second hinge rod in the vehicle width direction.

[0021] As can be seen from the above, through the sliding cooperation between the telescopic limiting post and the telescopic sliding groove, and the telescopic torsion spring abutting between the telescopic fixed bracket and the telescopic rotating bracket, even when the side brush device is in a horizontally extended state, when the sweeper is moving forward and sweeping, if the brush encounters an obstacle, it can elastically avoid it to the outside and rear by the outward rotating bracket. When the sweeper is moving backward, if the brush or the outward rotating bracket encounters an obstacle, it can elastically avoid it to the front and inward by the retraction of the outward rotating bracket. Through the elastic avoidance to the outside and inward based on different fulcrums in the horizontal direction, the elastic anti-collision performance of the side brush device is further improved. In addition, the support of the telescopic rotating bracket by the rotating limiting post located on the outside of the vehicle width direction makes the position of the telescopic rotating bracket and the lifting linkage relatively fixed, so as to stabilize the relative position of the brush.

[0022] To achieve the second objective of this invention, this invention provides a sweeping machine, including a frame and the side brush device of the above-described scheme, a telescopic drive device and a telescopic fixed bracket fixedly mounted on the frame. Attached Figure Description

[0023] Figure 1 This is a partial structural diagram of an embodiment of the sweeper of the present invention.

[0024] Figure 2 This is a structural diagram of two side brush devices in an embodiment of the sweeper of the present invention.

[0025] Figure 3 This is a structural diagram of an embodiment of the side brush device of the present invention.

[0026] Figure 4 This is a structural diagram of an embodiment of the side brush device of the present invention from another perspective.

[0027] Figure 5 This is a structural diagram of an embodiment of the side brush device of the present invention in an elastic avoidance state.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0029] Reference Figures 1 to 5 The sweeper includes a frame 101, two auxiliary brush devices 102 and two side brush devices 1. The two auxiliary brush devices 102 and the two side brush devices 1 are all located at the front end of the frame 101 in the length direction. The two auxiliary brush devices 102 are located at both ends in the width direction and are connected to the frame 101. The two side brush devices 1 are located at both ends in the width direction and are connected to the frame 101.

[0030] The side brush device 1 includes a telescopic assembly 2, a lifting assembly 3, and an outward swing assembly 4. The telescopic assembly 2 includes a telescopic drive device 21, a telescopic fixed bracket 22, a rotation limit post 221, a telescopic rotating bracket 23, and a telescopic torsion spring 24. The telescopic fixed bracket 22 and the telescopic rotating bracket 23 are hinged by a second hinge rod 25, which is arranged vertically. The telescopic torsion spring 24 is sleeved outside the second hinge rod 25 and abuts between the telescopic fixed bracket 22 and the telescopic rotating bracket 23. The telescopic torsion spring 24 is located below the telescopic fixed bracket 22. The telescopic fixed bracket 22 is fixedly connected to the mounting column 103 of the frame 101. The telescopic drive device 21 is fixedly mounted on the frame 101.

[0031] The telescopic drive device 21 is connected to the telescopic rotating bracket 23 and drives the telescopic rotating bracket 23 to rotate in the horizontal direction. Specifically, the drive end 211 of the telescopic drive device 21 drives the telescopic movement in the horizontal direction. The drive end 211 of the telescopic drive device 21 is hinged to a sliding plate. The sliding plate is provided with a telescopic groove 212 extending in the horizontal direction. The telescopic rotating bracket 23 is provided with a telescopic limiting post 231 at its upper end. The telescopic limiting post 231 passes through the telescopic groove 212 and can move within the telescopic groove 212.

[0032] The rotation limit post 221 is located on the outer side of the second hinge rod 25 based on the vehicle width direction Y and is fixedly connected to the telescopic fixed bracket 22. The rotation limit post 221 extends in the horizontal direction and can be adjacent to the telescopic rotating bracket 23. The telescopic slide 212 and the rotation limit post 221 are both located on the inner side of the second hinge rod 25 based on the vehicle width direction Y. The outer and inner sides of the vehicle width direction Y are referenced to the central axis of the frame 101. The side closer to the central axis is the inner side, and the side farther away from the central axis is the outer side.

[0033] The lifting assembly 3 includes a lifting drive device 31 and two lifting links 32. The lifting links 32 are arranged in a plate shape and extend along the vehicle length direction X. The two lifting links 32 are arranged in parallel in the vertical direction and form a parallelogram. The fixed ends of the lifting drive device 31 and the two lifting links 32 are respectively hinged to the telescopic rotating bracket 23. The telescopic rotating bracket 23 has a bearing member 323 below the fixed ends of the lifting links 32. The lifting drive device 31 is located above the bearing member 323. The telescopic rotating bracket 23 has a lifting limit post 232 extending in the vertical direction at the rear end of the fixed end of the lifting drive device 31 based on the vehicle length direction X. The lifting limit post 232 can be adjacent to the lifting drive device 31.

[0034] Two lifting links 32 are provided with through holes 321 in the vertical direction. The lifting drive device 31 is located in the two through holes 321. The free end of the lifting drive device 31 is hinged to the lifting link 32 located below. The lifting drive device 31 and the lifting link 32 are driven to rotate in the vertical direction by the extension and retraction of the free end of the lifting drive device 31. The free end of the lifting drive device 31 may be provided with a sliding groove. Through the sliding connection between the sliding groove and the connecting column of the lifting link 32, the two lifting links 32 can have a certain degree of movement or rotation space in the vertical direction.

[0035] The outer swing assembly 4 includes a sweeping brush 47, a sweeping brush drive device 49, an outer swing fixing bracket 41, an outer swing rotating bracket 42, an outer swing torsion spring 44, an outer swing limiting post 45, and a torque adjusting post 46. The outer swing fixing bracket 41 is hinged to the free end of the lifting link 32 and can move vertically with the free end of the lifting link 32. Specifically, the outer swing fixing bracket 41 is provided with a first C-shaped mounting groove 411 that extends vertically and a second C-shaped mounting groove that extends horizontally. The first C-shaped mounting groove 411 is formed by a C-shaped arrangement of side wall 413, end wall 414 and partition wall 415. The second C-shaped mounting groove 412 is formed by a C-shaped arrangement of upper wall 416, partition wall 415 and lower wall 417. The second C-shaped mounting groove 412 is located outside the first C-shaped mounting groove 411 based on the vehicle width direction Y. The free ends of the two lifting linkages 32 are located inside the first C-shaped mounting groove 411 and are hinged between the side wall 413 and partition wall 415.

[0036] The outward swing bracket 42 is arranged in a C-shaped profile. The outward swing bracket 42 is provided with a third C-shaped mounting groove 421 extending horizontally. The outward swing bracket 42 extends outward from the second hinge rod 25 based on the vehicle width direction Y. The end of the outward swing bracket 42 is connected in the second C-shaped mounting groove 412. The first hinge rod 43 passes through the end of the outward swing bracket 42 and the second C-shaped mounting groove 412, thereby realizing the outward swing fixed bracket 41 and the outward swing bracket 42 hinged by the first hinge rod 43. The outward swing bracket 42 extends along the vehicle width direction Y and can rotate in the horizontal direction. The sweeping brush drive device 49 is provided on the outward swing bracket 42. The sweeping brush 47 is connected to the sweeping brush drive device 49. The sweeping brush drive device 49 drives the sweeping brush 47 to rotate. The outer periphery of the sweeping brush 47 is also provided with an anti-collision ring 48.

[0037] The outer swing limit post 45 is located at the front end of the outer swing torsion spring 44 in the vehicle length direction X and is fixedly connected to the outer swing fixed bracket 41. The outer swing limit post 45 is arranged in the vertical direction and passes through the second C-shaped mounting groove 412. The outer swing rotating bracket 42 is provided with a limit plate 423 on the outer periphery of the first hinge rod 43. The limit plate 423 can be adjacent to the outer swing limit post 45.

[0038] An external swing torsion spring 44 is sleeved outside the first hinge rod 43 and located inside the third C-shaped mounting groove 421. The first end of the external swing torsion spring 44 abuts against the external swing fixed bracket 41. The external swing rotating bracket 42 has multiple positioning holes 422 on the outer periphery of the external swing torsion spring 44. The multiple positioning holes 422 are arranged radially along the first hinge rod 43 and penetrate the third C-shaped mounting groove 421 vertically. The torque adjusting column 46 is arranged vertically and can be connected to one of the positioning holes 422. The torque adjusting column 46 is connected to the external swing rotating bracket 42 and is connected between the two side walls of the third C-shaped mounting groove 421. The second end of the external swing torsion spring 44 abuts against the torque adjusting column 46. By selectively inserting the torque adjusting column 46 into different positioning holes 422, the abutment position of the second end of the external swing torsion spring 44 can be realized, thereby adjusting the preset torque of the external swing torsion spring 44.

[0039] In the retracted state, the lifting component 3 and the outward swing component 4 can be retracted inward by driving the telescopic drive device 21, and the outward swing component 4 can be lifted by driving the lifting drive device 31, thereby retracting the side brush. In the lowered state, the lifting component 3 and the outward swing component 4 can be extended and lowered by driving the telescopic drive device 21 and the lifting drive device 31, thus facilitating the cleaning work of the side brush.

[0040] When the sweeper is moving forward to clean, see Figure 5When the sweeping brush encounters an obstacle, it can elastically avoid it by moving outward and backward through the outward swing rotating bracket. When the sweeper moves backward, when the sweeping brush or the outward swing rotating bracket encounters an obstacle, it can elastically avoid it by retracting forward and inward through the outward swing rotating bracket. By utilizing the elastic rotation of the outward swing rotating bracket 42 and the lifting linkage 32 in different directions in the horizontal direction, the elastic anti-collision performance in the forward or backward direction is effectively improved.

[0041] Of course, the above embodiments are only preferred embodiments of this case, and there can be more variations in specific applications. For example, the free end of the lifting drive device can also be hinged to the lifting link located above. Or, for example, a single lifting link can be used for lifting connection, which can also achieve the purpose of this invention.

[0042] The terms "first," "second," etc., used in the above description are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0043] Furthermore, in this application, directional terms such as "upper" and "lower" may be defined relative to the orientation in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation in which the components are placed in the accompanying drawings.

[0044] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

Claims

1. A resilient anti-collision side brush device, comprising a telescopic assembly, a lifting assembly, and an outward swing assembly, wherein the telescopic assembly includes a telescopic drive device, a telescopic fixed bracket, and a telescopic rotating bracket; the lifting assembly includes a lifting drive device and a lifting link; the telescopic rotating bracket is hinged to the telescopic fixed bracket; the telescopic drive device is connected to the telescopic rotating bracket and drives the telescopic rotating bracket to rotate in the horizontal direction; the fixed end of the lifting drive device and the fixed end of the lifting link are respectively hinged to the telescopic rotating bracket; the free end of the lifting drive device is hinged to the lifting link; and the lifting drive device and the lifting link are rotatable in the vertical direction. Its features are: The outward swing assembly includes a sweeping brush, a sweeping brush driving device, an outward swing fixing bracket, an outward swing rotating bracket, an outward swing torsion spring, an outward swing limiting post, and a torque adjusting post. The outward swing fixing bracket is hinged to the free end of the lifting link and can move vertically with the free end of the lifting link. The outer swing fixed bracket and the outer swing rotating bracket are hinged together by the first hinge rod. The lifting link extends along the length of the vehicle. The outer swing rotating bracket extends along the width of the vehicle and can rotate in the horizontal direction. The sweeping brush drive device is mounted on the outer swing rotating bracket. The sweeping brush is connected to the sweeping brush drive device. The outer swing torsion spring is sleeved outside the first hinge rod. The first end of the outer swing torsion spring abuts against the outer swing fixed bracket. The outer swing limiting post is located at the front end of the outer swing torsion spring in the vehicle length direction and is fixedly connected to the outer swing fixing bracket. The outer swing rotating bracket is provided with a limiting plate on the outer periphery of the first hinge rod. The limiting plate can be adjacent to the outer swing limiting post. The outward swing rotating bracket is provided with a plurality of positioning holes on the outer periphery of the outward swing torsion spring. The plurality of positioning holes are arranged radially along the first hinge rod. The torque adjusting column can be connected to one of the positioning holes. The second end of the outward swing torsion spring abuts against the torque adjusting column. The telescopic fixed bracket and the telescopic rotating bracket are hinged together by a second hinge rod. The telescopic assembly also includes a telescopic torsion spring, which is sleeved outside the second hinge rod and abuts against the telescopic fixed bracket and the telescopic rotating bracket. The drive end of the telescopic drive device is provided with a telescopic slide groove extending in the horizontal direction, and the telescopic rotating bracket is provided with a telescopic limiting post, which passes through the telescopic slide groove and can move within the telescopic slide groove.

2. The side brush device according to claim 1, characterized in that: The external swing fixed bracket is provided with a first C-shaped mounting groove that runs vertically through the bracket and a second C-shaped mounting groove that runs horizontally through the bracket; the external swing rotating bracket is provided with a third C-shaped mounting groove that extends horizontally. The free end of the lifting link is hinged in the first C-shaped mounting groove, the end of the outward swing rotation bracket is connected in the second C-shaped mounting groove, the first hinge rod passes through the end of the outward swing rotation bracket and the second C-shaped mounting groove, and the outward swing torsion spring is located in the third C-shaped mounting groove.

3. The side brush device according to claim 2, characterized in that: The outward swing limiting post is arranged vertically and passes through the second C-shaped mounting groove.

4. The side brush device according to claim 2, characterized in that: Multiple positioning holes penetrate the third C-shaped mounting groove in a vertical direction, and the torque adjusting column is arranged in a vertical direction and connected to the outward swinging bracket.

5. The side brush device according to claim 2, characterized in that: The lifting assembly includes two lifting links, which are arranged in a plate shape. The two lifting links are arranged parallel to each other in the vertical direction and are hinged between the telescopic rotating bracket and the first C-shaped mounting groove. The two lifting links are provided with through holes in the vertical direction, and the lifting drive device is located in the two through holes.

6. The side brush device according to claim 5, characterized in that: The free end of the lifting drive device is hinged to the lifting linkage located below.

7. The side brush device according to claim 5, characterized in that: The telescopic rotating bracket is provided with a vertically extending lifting limit post at the rear end of the fixed end of the lifting drive device based on the vehicle length direction, and the lifting limit post can be adjacent to the lifting drive device.

8. The side brush device according to claim 1, characterized in that: The outward swing bracket extends toward the outer side of the second hinge based on the vehicle width direction; The telescopic assembly further includes a rotation limiting post, which is located on the outside of the second hinge rod based on the vehicle width direction and is fixedly connected to the telescopic fixed bracket. The rotation limiting post can be adjacent to the telescopic rotating bracket. Both the telescopic slide and the rotation limiting post are located inside the second hinge rod based on the vehicle width direction.

9. A sweeping machine, characterized in that, The device includes a frame and the side brush device as described in any one of claims 1 to 8, wherein the telescopic drive device and the telescopic fixed bracket are fixedly mounted on the frame.

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