Rolling brush mechanism and vehicle-mounted sweeper
By setting locking structures at both ends of the roller brush mechanism shaft, the problem of the roller brush mechanism detaching from the photovoltaic module is solved, achieving stable cleaning and protection of the module.
Patent Information
- Application Number
- CN202520231739.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-13
AI Technical Summary
The existing vehicle-mounted sweeper's roller brush mechanism is easily affected by terrain and may detach from the photovoltaic module surface, resulting in incomplete cleaning or damage to the module.
A roller brush mechanism was designed, which adopts a symmetrical locking structure at both ends of the roller brush shaft, including a base, a push rod and a locking component. The push rod drives the locking component to switch between open and closed states to achieve locking with the photovoltaic module and ensure effective operation on the surface of the photovoltaic module.
It achieves a stable connection between the roller brush mechanism and the photovoltaic module, avoiding detachment and heavy pressure, ensuring cleaning effect and protecting the module surface, and adapting to terrain changes.
Smart Images
Figure CN223758235U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic field especially a kind of rolling brush mechanism and vehicle-mounted cleaning machine. BACKGROUND
[0002] Vehicle-mounted cleaning machine runs to the side of target photovoltaic module array, places rolling brush mechanism on photovoltaic module, and vehicle-mounted cleaning machine and rolling brush mechanism linkage can control the movement track of rolling brush mechanism on photovoltaic module. Rolling brush mechanism of vehicle-mounted cleaning machine is diversified, and the brush in the rolling brush mechanism needs to be in contact with the surface of photovoltaic module to carry out cleaning operation, but the rolling brush mechanism is easily affected by terrain and cannot clean by separating from the surface of photovoltaic module. Therefore, it is necessary to provide a new rolling brush mechanism and vehicle-mounted cleaning machine to solve the above problems. SUMMARY
[0003] The utility model aims at providing a kind of rolling brush mechanism and vehicle-mounted cleaning machine, which is beneficial to its effective operation and cleaning on the surface of photovoltaic module.
[0004] To achieve the above object, the utility model adopts the following technical scheme one: a kind of rolling brush mechanism, it includes: rolling brush shaft;Brush, it is around fixed on the circumferential surface of the rolling brush shaft;And a pair of lock structure, it is symmetrically fixed on the opposite ends of the length direction of the rolling brush shaft, each lock structure includes base, push rod and lock piece, the base is fixed with the rolling brush shaft, the push rod is arranged in the side of the base, the lock piece is pivotally connected between the base and the push rod, the lock piece has open state and closed state and can be driven by the push rod and be converted between the open state and the closed state.
[0005] As the further improved technical scheme one of the utility model, the push rod includes first rod part and second rod part, the first rod part and the second rod part can be relatively telescopic to change the overall length of the push rod.
[0006] As the further improved technical scheme one of the utility model, the first rod part is inserted in the second rod part.
[0007] As the further improved technical scheme one of the utility model, the first rod part has the first end away from the second rod part, and the second rod part has the end away from the first rod part;The lock piece of each end of the rolling brush shaft is a pair, and one push rod synchronously drives a pair of lock pieces;One of a pair of lock pieces is pivotally connected at the first end of the first rod part, and the other lock piece is pivotally connected at the end of the second rod part, and a pair of lock pieces are mirror-symmetrically arranged in the length direction of the push rod.
[0008] As a further improved technical scheme of the utility model, the first end portion and the third end portion extend reversely along the length direction of the push rod, the second end portion extends from the connecting plane where the first end portion and the third end portion are located to the first end portion in a curved manner, and the two second end portions at two ends are oppositely arranged.
[0009] As a further improved technical scheme of the utility model, the first end portion and the third end portion extend reversely along the length direction of the push rod, the second end portion extends from the connecting plane where the first end portion and the third end portion are located to the first end portion in a curved manner, and the two second end portions at two ends are oppositely arranged.
[0010] As a further improved technical scheme of the utility model, the third end portion is arranged in an upper and lower manner, and the interval between the upper and lower third end portions is greater than the frame height of the photovoltaic module, so that the third end portion can accommodate the frame of the photovoltaic module.
[0011] As a further improved technical scheme of the utility model, the first end portion is arranged in an upper and lower manner, the base comprises a fixedly connected vertical support portion and a horizontal support portion, the horizontal support portion is connected to the same end of a pair of vertical support portions, a pair of lock pieces are symmetrically arranged at opposite ends of the length direction of the horizontal support portion, the horizontal support portion comprises a main plate, a first auxiliary plate and a second auxiliary plate, the first auxiliary plate and the second auxiliary plate are arranged in the same direction and are arranged above and below the main plate respectively, and the upper and lower first end portions of each lock piece are respectively pivotally connected to the first auxiliary plate and the second auxiliary plate.
[0012] To achieve the above object, the utility model adopts the following technical scheme two: a vehicle-mounted cleaning machine, which comprises a mobile locomotive base, a mechanical arm and a rolling brush mechanism as described above, the rolling brush mechanism is connected to the mobile locomotive base through the mechanical arm, the base further comprises a top cross beam arranged above the rolling brush shaft in parallel, the mechanical arm is fixed to the top cross beam, and the top cross beam fixedly connects a pair of lock structures at opposite ends of the rolling brush shaft.
[0013] As a further improved technical scheme of the utility model, the rolling brush mechanism comprises a pair of ear plate portions fixedly arranged below the top cross beam and at the length direction ends of the top cross beam, and each ear plate portion allows the rolling brush shaft to pass through.
[0014] Compared with the prior art, the utility model discloses a pair of lock structures are fixed in the opposite ends of the length direction of the rolling brush shaft, each lock structure includes base, push rod and lock piece, the base is fixed with the rolling brush shaft, the push rod is arranged in the side of the base, the lock piece is pivotally connected between the base and the push rod, the lock piece has the open state and the closed state and can be driven by the push rod and converts between the open state and the closed state, thereby can realize the operation of the rolling brush mechanism in the state of locking the photovoltaic module, and the setting realizes the anti -drop between the rolling brush mechanism and the frame of photovoltaic module, and is favorable for the cleaning operation of the rolling brush mechanism on the surface of photovoltaic module. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the three-dimensional assembly drawing that the rolling brush mechanism of the utility model is placed on the surface of photovoltaic module, but the lock structure on the rolling brush mechanism is still in the open state.
[0016] Figure 2 It is the top view of Figure 1 .
[0017] Figure 3 It is the three-dimensional assembly drawing of other parts of the rolling brush mechanism of the utility model in the hidden brush under the perspective. Figure 1
[0018] Figure 4 It is the three-dimensional exploded view of the rolling brush mechanism of the utility model in Figure 3 and the photovoltaic module is separated and other parts.
[0019] Figure 5 It is the three-dimensional assembly drawing of the lock structure of the utility model rolling brush mechanism two ends in the open state.
[0020] Figure 6 It is the three-dimensional exploded view of the lock structure of the utility model rolling brush mechanism two ends in the open state.
[0021] Figure 7 It is the three-dimensional assembly drawing of the lock structure of the utility model rolling brush mechanism two ends in the closed state.
[0022] Figure 8 It is the three-dimensional exploded view of the lock structure of the utility model rolling brush mechanism two ends in the closed state.
[0023] Figure 9 It is the three-dimensional assembly drawing of the utility model vehicle-mounted cleaning machine carrying rolling brush mechanism running on the surface of photovoltaic module, wherein the lock structure has been in the closed state.
[0024] Figure 10 is Figure 9 a front view of
[0025] Figure 11 is Figure 10 an enlarged view of A portion in
[0026] Figure 12 is Figure 10 an enlarged view of B portion in DETAILED DESCRIPTION
[0027] The exemplary embodiments of this application will be described in detail below with reference to the attached drawings. If there are several embodiments, the features of the embodiments can be combined with each other as long as there is no conflict. When the description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise specified. The description in the following exemplary embodiments does not represent all the embodiments consistent with this application; rather, they are merely examples of devices, products and / or methods consistent with some aspects of this application as recited in the claims of this application.
[0028] The terms used in this application are merely for the purpose of describing the embodiments, and are not intended to limit the scope of protection of the application. The singular forms "a", "an" and "the" used in the specification and claims of this application are also intended to include the plural forms unless the context clearly indicates otherwise.
[0029] It should be understood that the terms "first", "second" and similar terms used in the specification and claims of this application do not represent any order, number or importance, but are merely used to distinguish the features. Similarly, "one" or "a" and similar terms do not represent a quantity limitation, but represent the existence of at least one. Unless otherwise specified, the terms "before", "after", "left", "right", "up", "down" and similar terms appearing in this application are merely for convenience of description, and are not limited to a certain position or a spatial orientation. The terms "include" or "contain" and similar terms are an open-ended expression, which means that the elements appearing before "include" or "contain" cover the elements appearing after "include" or "contain" and their equivalents, which does not exclude that the elements appearing before "include" or "contain" can also contain other elements. If "several" appears in this application, it means two or more.
[0030] Please refer to Figures 1 to 12As shown, the utility model discloses a kind of roll brush mechanism 100, including roll brush shaft 1, brush 2 and a pair of lock structure 3.The brush 2 is around and is fixed on the circumferential surface of the roll brush shaft 1.A pair of the lock structure 3 is symmetrically fixed on the opposite ends of the length direction of the roll brush shaft 1.Each lock structure 3 includes base 31, push rod 32 and lock piece 33.The base 31 is fixed with the roll brush shaft 1, the push rod 32 is arranged in the side of the base 31, and the lock piece 33 is pivotally connected between the base 31 and the push rod 32.The lock piece 33 has open state and closed state and can be driven by the push rod 32 to convert between the open state and the closed state.The structure of the roll brush mechanism 100 on the vehicle-mounted cleaning machine 400 of the utility model is simple and easy to control, just vehicle-mounted control opens and closes the push rod 32 of two ends, in closed state, it is favorable for the effective operation of roll brush mechanism 100 on photovoltaic module 500, roll brush mechanism 100 operates in the state of being relative to photovoltaic module 500 Locking, so setting realizes the anti-disengagement between roll brush mechanism 100 and photovoltaic module 500, and it is favorable for the cleaning operation of roll brush mechanism 100 on the surface of photovoltaic module 500.
[0031] Please refer to Figures 1 to 8 As shown, the push rod 32 includes first rod portion 321 and second rod portion 322, and the first rod portion 321 and the second rod portion 322 can be relatively telescopic to change the overall length of the push rod 32.Because the lock piece 33 is pivotally connected between the base 31 and the push rod 32, and the base 31 does not change in length in the length direction of the push rod 32, when the push rod 32 is telescopic to change the length, each lock piece 33 at the front and rear ends of the base 31 can be pivotally folded by 90 degrees. Figure 5 And Figure 6 When the first rod portion 321 is retracted relative to the second rod portion 322, the lock structure 3 at both ends of the roll brush mechanism 100 of the utility model is in the open state, and the lock structure 3 at this time is located in the unlocking position relative to the photovoltaic module 500. Figure 7 And Figure 8 When the first rod portion 321 is extended relative to the second rod portion 322, the lock structure 3 at both ends of the roll brush mechanism 100 of the utility model is in the closed state, and the lock structure 3 at this time is located in the locking position relative to the photovoltaic module 500.
[0032] Please refer to Figures 5 to 8As shown, in the embodiment, the telescopic extension of the push rod 32 is achieved by inserting the first rod portion 321 into the second rod portion 322. In other embodiments, the first rod portion 321 can be arranged parallel to the second rod portion 322 outside the second rod portion 322 and slide relative to the second rod portion 322 to achieve the telescopic extension of the push rod 32 between the first end 3210 and the second end 3220. However, the insertion in the embodiment is more convenient, saves space and is easy to assemble.
[0033] As shown in Figure 6 and Figure 8 As shown, the first rod portion 321 has a first end 3210 away from the second rod portion 322, and the second rod portion 322 has a second end 3220 away from the first rod portion 321. It can also be understood that the first end 3210 of the first rod portion 321 is the first end 3210 of the push rod 32, and the second end 3220 of the second rod portion 322 is the second end 3220 of the push rod 32. As shown in Figures 1 to 8 As shown, the lock 33 at each end of the roller brush shaft 1 is a pair of lock 33, and one push rod 32 synchronously drives a pair of lock 33. One of the pair of lock 33 is pivoted to the first end 3210 of the first rod portion 321, and the other lock 33 is pivoted to the second end 3220 of the second rod portion 322. As shown in Figure 2 and Figures 5 to 8 A pair of lock 33 is arranged in mirror image in the length direction of the push rod 32, providing double assurance of the closed state and being more stable. It can be understood that the utility model includes a pair of lock structure 3 in the left-right direction, and each lock structure 3 includes a pair of lock 33 in the front-rear direction. Therefore, a total of four lock 33 in the closed state in the front-rear and left-right directions plays a role in position limitation for the photovoltaic module 500, which is beneficial to the effective operation of the roller brush mechanism 100 on the photovoltaic module 500.
[0034] As shown in Figures 5 to 8 As shown, the lock 33 includes a first end portion 331 pivoted to the base 31, a second end portion 332 pivoted to the push rod 32, and a third end portion 333 capable of clamping the photovoltaic module. The first end portion 331, the second end portion 332 and the third end portion 333 are connected as a whole. In this way, the entire lock 33 can be rotated together.
[0035] As shown in Figure 6 and Figure 8As shown, the first end 331 and the third end 333 extend in opposite directions along the length of the push rod 32. The second end 332 extends curvedly towards the first end 331 from the connecting plane where the first end 331 and the third end 333 are located. The two second ends 332 at both ends are arranged opposite each other. This arrangement of the locking member 33 not only ensures the pivotal connection between the first end 331 and the base 31, and the pivotal connection between the second end 332 and the push rod 32, but also ensures that even if the length of the push rod 32 connected to one pivot point changes, but the length of the base 31 connected to the other pivot point remains unchanged, the entire locking member 33 can be rotated 90 degrees to switch between the open and closed states. Please refer to... Figures 1 to 6 When the roller brush structure 100 of the vehicle-mounted sweeper 400 is lowered, the locking structures 3 at both ends are open; please refer to... Figures 7 to 12 The vehicle-mounted sweeper 400 of this utility model places the roller brush structure 100 at a height corresponding to the photovoltaic module 500, and drives the push rod 32 to rotate the entire locking piece 33 90 degrees to achieve closure, thereby preventing the roller brush mechanism 100 from detaching from the photovoltaic module 500.
[0036] Please refer to Figures 1 to 12 As shown in the specific embodiment, the third end 333 consists of two vertically arranged third ends 333, with the distance between the two third ends 333 being greater than the height of the frame of the photovoltaic module 500, so that the third end 333 can accommodate the frame of the photovoltaic module 500. The two third ends 333 ensure a stable pivot connection between the locking member 33 and the base 31, preventing disengagement. For example, the frame height of the photovoltaic module 500 is 4cm, and the spacing between the upper and lower third ends 333 is 9cm. That is, the vertical distance of the locking structure 3 is 5cm more than the frame height. The spacing between the upper and lower third ends 333 is greater than the frame height of the photovoltaic module 500. This ensures that when the locking component 33 is in the closed state and the vehicle-mounted sweeper 400 is moving forward, the locking structure 3 is vertically and horizontally connected to the frame of the photovoltaic module 500, which drives the roller brush structure 100 to sweep the surface of the photovoltaic module 500 forward. During operation, the vertical positioning adjustment of the brush 2 and the photovoltaic module 500 can be made according to the terrain to avoid inadequate contact between the brush 2 and the photovoltaic module 500 or to prevent the photovoltaic module 500 from being squeezed.
[0037] Please refer to Figures 1 to 8As shown, the first end part 331 is arranged in an up-down manner. The base 31 comprises a vertical support part 311 and a horizontal support part 312 fixedly connected, and the horizontal support part 312 is connected at the same end of the vertical support part 311. A pair of the lock pieces 33 are symmetrically arranged at opposite ends of the horizontal support part 312 in the length direction. The horizontal support part 312 comprises a main plate 3120, a first auxiliary plate 3121 and a second auxiliary plate 3122. The first auxiliary plate 3121 and the second auxiliary plate 3122 are arranged in the same direction and are arranged above and below the main plate 3120, respectively. Two first end parts 331 are pivotally positioned with the first auxiliary plate 3121 and the second auxiliary plate 3122, respectively. The double pivotal positioning between the two first end parts 331 of each lock piece 33 and the base 31 ensures stability.
[0038] Please refer to Figures 1 to 12 As shown, the utility model also relates to a vehicle-mounted cleaning machine 400, which comprises a mobile locomotive base 200, a mechanical arm 300 and the roll brush mechanism 100. The roll brush mechanism 100 is connected to the mobile locomotive base 200 through the mechanical arm 300. The roll brush mechanism 100 further comprises a top cross beam 4 arranged in parallel above the roll brush shaft 1. The mechanical arm 300 is fixed to the top cross beam 4, and the top cross beam 4 is fixedly connected to a pair of the lock structures 3 at opposite ends of the roll brush shaft 1. The mobile locomotive base 200 ensures the mobility of the vehicle-mounted cleaning machine 400, and the mechanical arm 300 ensures the connectivity between the mobile locomotive base 200 and the roll brush mechanism 100. The top cross beam 4 facilitates the connection of a pair of the lock structures 3 at opposite ends of the roll brush shaft 1 into a whole and facilitates the positioning and grabbing of the roll brush mechanism 100 by the mechanical arm 300.
[0039] Please refer to Figures 1 to 4 As shown, the roll brush mechanism 100 comprises a pair of ear plate parts 5 fixedly arranged below the top cross beam 4 and at the length direction ends of the top cross beam 4. Each ear plate part 5 passes through the roll brush shaft 1 and is fixedly arranged between a pair of the vertical support parts 311 to serve as a connecting part.
[0040] Please refer to Figures 10 to 12Since the photovoltaic module 500 is usually installed in remote areas with uneven ground, the brush roller structure 100 can be offset up and down relative to the photovoltaic module 500 through the lock structure 3, so as to adaptively adjust the contact tightness between the brush 2 and the photovoltaic module 500. When the brush roller structure 100 is offset upward relative to the photovoltaic module 500, the third end portion 333 below the lock structure 3 will touch the lower surface of the frame of the photovoltaic module 500, so that the brush 2 moves upward to slightly touch the surface of the photovoltaic module 500. When the brush roller structure 100 is offset downward relative to the photovoltaic module 500, the third end portion 333 above the lock structure 3 will touch the upper surface of the frame of the photovoltaic module 500, so that the brush 2 moves downward to relatively tightly touch the surface of the photovoltaic module 500. Therefore, during the operation of the vehicle-mounted cleaning machine 400, the entire brush roller structure 100 together with the lock structure 3 and the brush 2 is floatingly connected to the frame of the photovoltaic module 500, so that the brush 2 of the brush roller structure 100 will not be separated from the surface of the photovoltaic module 500 and the entire brush roller structure 100 will not be directly pressed on the surface of the photovoltaic module 500 to damage the photovoltaic module 500.
[0041] In summary, since the brush roller structure 100 includes a pair of lock structures 3 fixed to opposite ends of the brush roller shaft 1, the structure of the brush roller structure 100 on the vehicle-mounted cleaning machine 400 is simple and easy to operate, and only the push rod 32 at both ends needs to be opened and closed by vehicle-mounted control. In the closed state, it is beneficial to the effective operation of the brush roller structure 100 on the photovoltaic module 500. Secondly, the brush roller structure 100 is floatingly connected to the frame of the photovoltaic module 500 through the lock structure 3, so that only the brush 2 of the brush roller structure 100 is in contact with the surface of the photovoltaic module 500 at all times, and the brush roller structure 100 is not separated from the surface of the photovoltaic module 500 and the entire brush roller structure 100 is floatingly connected to the frame of the photovoltaic module 500 through the lock structure 3, so that only one of the two third end portions 333 above and below the lock structure 3 will touch the frame of the photovoltaic module 500, and the brush roller structure 100 will not be directly pressed on the photovoltaic module 500 to damage the photovoltaic module 500.
[0042] The above implementation manners are only used for illustrating the technical scheme described in the utility model and not for limiting the utility model. The understanding of the utility model should be based on the technicians in the technical field. Although the utility model has been described in detail in the specification with reference to the above implementation manners, the technicians in the field should understand that the technicians in the field can still modify or equivalently replace the utility model, and all the technical schemes and improvements which do not deviate from the spirit and range of the utility model should be covered in the claim range of the utility model.
Claims
1. A rolling brush mechanism characterized by: The utility model relates to a kind of photovoltaic module locking device, including: Rolling brush shaft (1); Brush (2), circumferential surface is fixed on the rolling brush shaft (1); And A pair of lock structures (3) are symmetrically fixed on the opposite ends of the length direction of the rolling brush shaft (1), each of the lock structures (3) includes base (31), push rod (32) and lock piece (33), the base (31) is fixed with the rolling brush shaft (1), the push rod (32) is arranged on the side of the base (31), the lock piece (33) is pivotally connected between the base (31) and the push rod (32), the lock piece (33) has open state and closed state and can be driven by the push rod (32) to convert between the open state and the closed state.
2. The rolling brush mechanism of claim 1, wherein: The push rod (32) includes first rod portion (321) and second rod portion (322), the first rod portion (321) and the second rod portion (322) can be relatively moved telescopic to change the overall length of the push rod (32).
3. The rolling brush mechanism of claim 2, wherein: The first rod portion (321) is inserted into the second rod portion (322).
4. The rolling brush mechanism of claim 2, wherein: The first rod portion (321) has a first end (3210) away from the second rod portion (322), and the second rod portion (322) has a second end (3220) away from the first rod portion (321);The lock piece (33) on each end of the rolling brush shaft (1) is a pair, one push rod (32) synchronously drives a pair of lock pieces (33);One of a pair of lock pieces (33) is pivotally connected to the first end (3210) of the first rod portion (321), and the other lock piece (33) is pivotally connected to the second end (3220) of the second rod portion (322), and a pair of lock pieces (33) are mirror-symmetrically arranged in the length direction of the push rod (32).
5. The rolling brush mechanism of claim 1, wherein: The lock piece (33) includes a first end portion (331) pivotally connected to the base (31), a second end portion (332) pivotally connected to the push rod (32), and a third end portion (333) capable of clamping a photovoltaic module, the first end portion (331), the second end portion (332) and the third end portion (333) are connected as a whole.
6. The roll brush mechanism of claim 5, wherein: The first end portion (331) and the third end portion (333) extend reversely in the length direction of the push rod (32), the second end portion (332) extends from the connecting plane where the first end portion (331) and the third end portion (333) are located to the first end portion (331) in a curved manner, and the two second end portions (332) at both ends are oppositely arranged.
7. The roll brush mechanism of claim 5, wherein: The third end portion (333) is arranged in an upper and lower manner, and the spacing between the upper and lower third end portions (333) is greater than the frame height of the photovoltaic module, so that the third end portion (333) can accommodate the frame of the photovoltaic module.
8. The roll brush mechanism of claim 7, wherein: The first end part (331) is two up and down, the base (31) includes fixedly connected vertical support part (311) and horizontal support part (312), the horizontal support part (312) is connected at a pair of the vertical support part (311) same end, a pair of the lock piece (33) is symmetrically arranged at the opposite ends of the horizontal support part (312) length direction, the horizontal support part (312) includes main plate (3120), first auxiliary plate (3121) and second auxiliary plate (3122), the first auxiliary plate (3121) and the second auxiliary plate (3122) are respectively set up in the same direction bending in the upper and lower of the main plate (3120), the first end part (331) of each lock piece (33) is respectively with the first auxiliary plate (3121) and the second auxiliary plate (3122) pivotally connected positioning.
9. A vehicle-mounted cleaning machine comprising: The mobile vehicle base (200), the mechanical arm (300) and the rolling brush mechanism (100) as claimed in any one of claims 1-8, the rolling brush mechanism (100) is connected on the mobile vehicle base (200) through the mechanical arm (300), characterized in that: the rolling brush mechanism (100) further includes a top crossbeam (4) arranged in parallel above the rolling brush shaft (1), the mechanical arm (300) is fixed with the top crossbeam (4), and the top crossbeam (4) is fixedly connected with a pair of the lock structure (3) at opposite ends of the rolling brush shaft (1).
10. The vehicle-mounted cleaning machine of claim 9, wherein: The rolling brush mechanism (100) includes a pair of ear plate parts (5) fixedly arranged below the top crossbeam (4) and at both ends along the length direction of the top crossbeam (4), and each ear plate part (5) passes through the rolling brush shaft (1).