CN217066259U - Floor brush lifting mechanism and cleaning equipment with same - Google Patents

Abstract

The application discloses ground brush elevating system and have its cleaning equipment relates to cleaning equipment technical field. The floor brush lifting mechanism comprises a fixed frame, a connecting rod assembly and a driving piece. The fixed frame is used for mounting a ground brush of the cleaning equipment and comprises at least two lifting lugs arranged on the fixed frame; the connecting rod assembly is rotatably connected with the fixed frame through at least two lifting lugs; the driving piece is connected with the connecting rod assembly and used for driving the connecting rod assembly to rotate so as to drive the fixing frame to be far away from or close to a surface to be cleaned. The application provides a scrubbing brush elevating system, when using on cleaning device, driving piece drive link assembly rotates, drives the mount and keeps away from or is close to and treats the cleaning surface, can adjust the scrubbing brush like this and treat the height between the cleaning surface, realizes the lift of scrubbing brush, and the operation of being convenient for has avoided among the prior art scrubbing brush and base to need artifical manual lift of realizing the scrubbing brush through bar draw-in groove activity joint, leads to the inconvenient problem of operation.

Description

Floor brush lifting mechanism and cleaning equipment with same

Technical Field

The application relates to the technical field of cleaning equipment, in particular to a floor brush lifting mechanism and cleaning equipment with the floor brush lifting mechanism.

Background

At present, a sweeping robot generally has the function of cleaning and sweeping the ground. In some specific occasions, such as cleaning long-hair carpets, the friction resistance of the sweeping robot on the existing market is very large if the floor brush is too close to the carpet. When cleaning on the ceramic tile, the floor brush needs to be close to the ground as much as possible, and the floor brush needs to be lifted up properly. However, the lifting structure of the floor brush assembly in the prior art generally realizes the lifting of the floor brush through the movable clamping of the strip-shaped clamping groove with the base, so that the height between the floor brush and the ground needs to be manually adjusted through manpower. In use, for different cleaning surfaces, the user needs to frequently operate, the operation is time-consuming and labor-consuming, the use is extremely inconvenient, and the experience of the user is reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a floor brush lifting mechanism to solve the technical problem that the lifting mechanism of the floor brush is not convenient to operate in the prior art.

The present application provides:

a floor brush lift mechanism comprising:

the fixed frame is used for installing a floor brush of the cleaning equipment and comprises at least two lifting lugs arranged on the fixed frame;

the connecting rod assembly is rotatably connected with the fixed frame through at least two lifting lugs;

and the driving piece is connected with the connecting rod assembly and is used for driving the connecting rod assembly to rotate so as to drive the fixing frame to be far away from or close to the surface to be cleaned.

In addition, according to the floor brush lifting mechanism of this application, can also have following additional technical characteristics:

in some embodiments of the present application, the link assembly includes a first link and a second link, one end of the first link is hinged to the fixing frame, the other end of the first link is hinged to one end of the second link, and the other end of the second link is connected to the driving member.

In some embodiments of the present application, at least two of the lifting lugs are disposed on the fixing frame at intervals, an accommodating space is formed between at least two adjacent lifting lugs, one end of the first connecting rod is located in the accommodating space, and one end of the first connecting rod is rotatably connected to the two lifting lugs respectively.

In some embodiments of the present application, one end of the first connecting rod is connected to at least two of the lifting lugs through a rotating shaft.

In some embodiments of the present application, the first link and the second link are connected by a pin, and the mount, the first link, the second link, and the driving member form a four-bar linkage.

In some embodiments of the present application, the fixing frame has an accommodating groove along a length direction thereof, and the floor brush is rotatably mounted in the accommodating groove.

In some embodiments of this application, the holding tank is relative two cell walls at scrubbing brush length direction's both ends, one of them the through-hole has been seted up on the cell wall, another arc opening has been seted up on the cell wall, the scrubbing brush is close to the one end of through-hole be provided with through-hole matched with connecting axle, the other end of scrubbing brush rotationally is located arc opening department.

In some embodiments of the present application, the drive member is an electric motor.

The application also provides cleaning equipment which comprises a floor brush and the floor brush lifting mechanism in any embodiment, wherein the floor brush is rotatably arranged on the fixed frame.

In some embodiments of the present application, the cleaning device further comprises a driving mechanism, an output end of the driving mechanism is connected with the floor brush for driving the floor brush to rotate, and a housing of the driving mechanism is connected with the fixing frame.

Furthermore, a fixing hole is formed in the shell, a fixing column is arranged on one side, close to the shell, of the fixing frame, and the fixing column can be inserted into the fixing hole.

Furthermore, the fixing column is provided with a threaded hole, and a screw penetrates through the fixing hole and is screwed into the threaded hole so as to connect the fixing frame with the shell.

Furthermore, the shell is provided with a support in a protruding mode along the direction vertical to the output end of the driving mechanism, and the support is provided with the fixing hole.

In some embodiments of the present application, the drive is mounted on a base or a center frame of the cleaning apparatus; and/or the base or the middle frame is provided with a mounting groove matched with the shape of the fixing frame, a connecting piece is arranged on the inner wall of the mounting groove, a fixing shaft connected with the connecting piece in a rotating mode is arranged on the fixing frame, and a through hole used for the connecting rod assembly to penetrate through is formed in the mounting groove.

Furthermore, the connecting piece is a connecting lug, and a connecting hole matched with the fixed shaft is formed in the connecting lug; or

The connecting lug is connected with the fixed shaft through a pin shaft.

Furthermore, the number of the fixing shafts is n, the number of the connecting lugs is 2n, and one fixing shaft is arranged between the two connecting lugs.

Optionally, the number of the fixed shafts is n, and the number of the connecting lugs is 2 n-1.

Compared with the prior art, the beneficial effects of this application are: the application provides a floor brush lifting mechanism for cleaning equipment is last. This scrubbing brush elevating system includes mount, link assembly and driving piece, and cleaning device's scrubbing brush is installed on the mount, and driving piece drive link assembly rotates, drives the mount and keeps away from or be close to and treat the cleaning surface, can adjust the scrubbing brush like this and treat the height between the cleaning surface, realizes the lift of scrubbing brush, need not artifical manual adjustment, has improved operating efficiency. Meanwhile, the contact area between the floor brush and the surface to be cleaned can be effectively increased by adjusting the height between the floor brush and the surface to be cleaned, and the cleaning effect of the cleaning equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 illustrates a schematic perspective view of a floor brush lifting mechanism in some embodiments of the present application;

FIG. 2 illustrates an exploded view of a brush lifting mechanism in some embodiments of the present application;

FIG. 3 is a schematic view of a holder of a floor brush lifting mechanism according to some embodiments of the present disclosure;

FIG. 4 is a schematic view of another embodiment of the present disclosure showing a holder of a floor brush lifting mechanism;

FIG. 5 illustrates a perspective view of a linkage assembly of a floor brush lifting mechanism in accordance with certain embodiments of the present disclosure;

FIG. 6 illustrates a partial perspective view of a cleaning device in some embodiments of the present application;

FIG. 7 shows an exploded view of the cleaning device shown in FIG. 6;

FIG. 8 illustrates a partial, one-view structural schematic view of a cleaning apparatus in some embodiments of the present application;

FIG. 9 is an enlarged schematic view of portion A of FIG. 8;

FIG. 10 is a schematic view of a perspective view of a middle frame of a cleaning apparatus according to some embodiments of the present disclosure;

FIG. 11 is an enlarged schematic view of portion B of FIG. 10;

FIG. 12 illustrates a schematic view of a drive mechanism of a cleaning appliance in some embodiments of the present application;

figure 13 shows a schematic view of the structure of a floor brush of a cleaning device according to some embodiments of the present application.

Description of the main element symbols: 100-a floor brush lifting mechanism; 10-a fixing frame; 11-a lifting lug; 1211-through hole; 1212-an arc-shaped gap; 121-cell wall; 12-accommodating grooves; 13-a fixed shaft; 14-fixed columns; 200-a cleaning device; 2011-connecting shaft; 201-a floor brush; 2021-mounting groove; 2022-connecting member; 2023-a through hole; 202-middle frame; 2031-a housing; 20321-fixed holes; 2032-support; 203-a drive mechanism; 20-a connecting-rod assembly; 21-a first link; 22-a second link; 30-a drive member; 40-a rotating shaft; and 50-a pin shaft.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

As shown in fig. 1 to 4, the embodiment of the present application provides a floor brush lifting mechanism 100, which is mainly used in a cleaning device 200, where the cleaning device 200 may be a floor sweeping robot, a dust collector, or the like. The floor brush lifting mechanism 100 includes a fixing frame 10, a connecting rod assembly 20 and a driving member 30.

Specifically, the fixing frame 10 is used for installing a floor brush 201 of the cleaning device 200, the floor brush 201 is rotatably arranged on the fixing frame 10, and the fixing frame 10 comprises at least two lifting lugs 11 arranged thereon. The connecting rod assembly 20 is rotatably connected with the fixed frame 10 through at least two lifting lugs 11. The driving member 30 is connected to the connecting rod assembly 20, and is configured to drive the connecting rod assembly 20 to rotate, so as to drive the fixing frame 10 to move away from or close to a surface to be cleaned.

It should be noted that the number of the lifting lugs 11 may be two, as shown in fig. 1, and of course, the number of the lifting lugs 11 may also be three, four, or six, and so on. In addition, the surface to be cleaned may be one or more of a wall surface, a floor surface, and a carpet surface, which are not illustrated herein.

Referring to fig. 6 together, the embodiment of the application provides a scrubbing brush elevating system 100, when using on cleaning device 200, driving piece 30 drive link assembly 20 rotates, drive mount 10 and keep away from or be close to and wait to clean the face, can adjust scrubbing brush 201 like this and wait to clean the height between the face, realize scrubbing brush 201's lift, the operation of being convenient for, it needs artifical manual lift that realizes scrubbing brush 201 to have avoided scrubbing brush 201 and base to pass through bar draw-in groove activity joint among the prior art, lead to the inconvenient problem of operation. Meanwhile, the contact area between the floor brush 201 and the surface to be cleaned can be effectively increased by adjusting the height between the floor brush 201 and the surface to be cleaned, and the cleaning effect of the cleaning device 200 is improved.

As shown in fig. 1, 2 and 5, in one embodiment of the present application, the link assembly 20 optionally includes a first link 21 and a second link 22, one end of the first link 21 is hinged to the fixing frame 10, the other end of the first link 21 is hinged to one end of the second link 22, and the other end of the second link 22 is connected to the driving member 30. Thus, when the driving member 30 drives the second link 22 to move, the first link 21 is driven to move, and the first link 21 drives the fixing frame 10 to move. Wherein, because the first connecting rod 21 is hinged with the fixing frame 10, the moving angle of the fixing frame 10 can be adjusted, which is convenient for the floor brush 201 to contact with the surface to be cleaned.

As shown in fig. 4, in the above embodiment of the present application, optionally, at least two of the lifting lugs 11 are disposed on the fixing frame 10 at intervals, an accommodating space is formed between at least two adjacent lifting lugs 11, one end of the first connecting rod 21 is located in the accommodating space, and one end of the first connecting rod 21 is rotatably connected to two lifting lugs 11, respectively.

In the present embodiment, the first connecting rod 21 is hinged to the fixing frame 10 by the rotational connection, i.e. the hinge connection, between the lifting lug 11 and the first connecting rod 21. The connecting structure is simple, is convenient to produce and manufacture, and is beneficial to improving the production efficiency and the assembly efficiency.

Specifically, one end of the first connecting rod 21 is connected to at least two lifting lugs 11 through a rotating shaft 40. The lifting lug 11 is provided with a through hole 1211, the first connecting rod 21 is also provided with a through hole 1211, and the rotating shaft 40 penetrates through the through hole 1211 of the lifting lug 11 and the through hole 1211 of the first connecting rod, so that the first connecting rod 21 and the lifting lug 11 are rotatably connected.

Of course, it is also possible to provide a blind hole or a through hole on one of the lifting lug 11 and the first connecting rod 21, and a protrusion on the other, wherein the protrusion can be inserted into the blind hole or the through hole, and the protrusion can rotate in the blind hole or the through hole.

It should be noted that the first connecting rod 21 and the second connecting rod 22 may be of a strip-shaped plate structure, so as to be conveniently connected with the lifting lug 11.

Optionally, the lifting lug 11 is located at a middle position of the fixing frame 10, so that when the first connecting rod 21 moves, the lifting lug 11 drives the fixing frame 10 to move, so that the balance of the fixing frame 10 is more stable during the moving process.

As shown in fig. 4, in the above embodiment of the present application, the first link 21 and the second link 22 are connected by a pin 50 to realize the hinge joint of the first link 21 and the second link 22.

In addition, the fixing frame 10, the first link 21, the second link 22, and the driving member 30 form a four-bar linkage. Of course, other modified linkages of the four-bar linkage are possible.

In any one of the above embodiments of the present application, the driving member 30 is a motor, which is a speed reduction motor and is equipped with an encoder, and can precisely control the rotation angle of each connecting rod, so as to precisely adjust the lifting of the fixing frame 10, effectively adjust the contact area between the floor brush 201 and the surface to be cleaned, and improve the cleaning effect.

It should be noted that the output shaft of the motor and the second connecting rod 22 may be connected by interference fit, or connected by a D-shaped shaft, a D-shaped hole, a key, or the like, and of course, the output shaft of the motor and the second connecting rod 22 may also be connected by a coupler.

As shown in fig. 3, in an embodiment of the present application, optionally, the fixing frame 10 is opened with a receiving groove 12 along a length direction thereof, and the floor brush 201 is rotatably mounted to the receiving groove 12. The setting of holding tank 12 makes the assembly of scrubbing brush 201 compacter, reduces whole cleaning device 200's volume, and simultaneously, holding tank 12 can block that the dirt that has when scrubbing brush 201 rotates gets rid of inside the equipment.

Referring to fig. 13, in detail, the two groove walls 121 of the accommodating groove 12 opposite to the two ends of the floor brush 201 in the length direction are respectively provided with a through hole 1211 on one of the groove walls 121 and an arc-shaped opening 1212 on the other groove wall 121. One end of the floor brush 201 close to the through hole 1211 is provided with a connecting shaft 2011 matched with the through hole 1211, the connecting shaft 2011 is rotatably connected with the inner wall of the through hole 1211, and the other end of the floor brush 201 is rotatably positioned at the arc opening 1212, so that the floor brush 201 is rotatably arranged at the accommodating groove 12, and the floor brush is compact and simple in structure and convenient to assemble.

Example two

As shown in fig. 6 to 12, in the second embodiment of the present application, there is further provided a cleaning apparatus 200, wherein the cleaning apparatus 200 includes a floor brush 201 and the floor brush lifting mechanism 100 described in any of the above embodiments, and the floor brush 201 is rotatably mounted on the fixing frame 10.

The cleaning device 200 provided in the second embodiment includes the floor brush lifting mechanism 100 described in any one of the above embodiments, so that all the beneficial effects of the floor brush lifting mechanism 100 described in the first embodiment are achieved, and the description thereof is omitted here.

In some embodiments of the present application, as shown in fig. 2 and 11, optionally, the cleaning device 200 further includes a driving mechanism 203, an output end of the driving mechanism 203 is connected to the ground brush 201 for driving the ground brush 201 to rotate, and a housing 2031 of the driving mechanism 203 is connected to the fixing frame 10.

In this embodiment, the driving mechanism 203 may be a motor, or a combination of a motor and a driving wheel, and the motor may directly drive the floor brush 201 to rotate, or may drive the floor brush 201 to rotate through the driving wheel. In addition, the housing 2031 of the driving mechanism 203 is connected to the holder 10, so that the driving mechanism 203 can move together with the holder 10, and can move synchronously with the floor brush 201.

The housing 2031 of the driving mechanism 203 is connected to a fixing frame 10, specifically, a fixing hole 20321 is provided on the housing 2031, and a fixing post 14 is provided on one side of the fixing frame 10 close to the housing 2031, and the fixing post 14 can be inserted into the fixing hole 20321. Furthermore, the fixing post 14 is provided with a threaded hole, and a screw is inserted into the fixing hole 20321 and screwed into the threaded hole, so as to connect the fixing frame 10 and the housing 2031.

As shown in fig. 12, optionally, the housing 2031 is convexly provided with a support 2032 along a direction perpendicular to the output end of the driving mechanism 203, and the support 2032 is provided with the fixing hole 20321, so that the fixing hole 20321 is not directly formed on the housing 2031, and the structural strength of the housing 2031 is increased.

As shown in fig. 6-8, in one embodiment of the present application, the driving member 30 is optionally mounted on a base or center frame 202 of the cleaning device 200. I.e., the motor driving the holder 10 is mounted on the base or middle frame 202.

Meanwhile, the base or the middle frame 202 is provided with a mounting groove 2021 matched with the shape of the fixing frame 10, a connecting piece 2022 is arranged on the inner wall of the mounting groove 2021, the fixing frame 10 is provided with a fixing shaft 13 rotatably connected with the connecting piece 2022, and the mounting groove 2021 is provided with a through hole 2023 for the connection rod assembly 20 to penetrate through.

In this embodiment, the fixing frame 10 is located in the mounting groove 2021, so that the occupied space can be reduced, and the volume of the cleaning device 200 can be smaller. Meanwhile, the through hole 2023 is convenient for the connecting rod assembly 20 to penetrate through the through hole 2023 to be connected with the fixing frame 10, and is also convenient for the connecting rod in the connecting rod assembly 20 to move, so that the condition that the connecting rod assembly 20 interferes with the base when moving is avoided.

As shown in fig. 8 to 11, optionally, the connecting element 2022 is a connecting lug, and a connecting hole matched with the fixed shaft 13 is disposed on the connecting lug to realize the rotational connection between the connecting lug and the first connecting rod 21.

Of course, the engaging lug and the fixed shaft 13 can also be connected through the pin 50, so as to realize the rotating connection between the engaging lug and the first connecting rod 21.

Furthermore, the number of the fixing shafts 13 is n, the number of the connecting lugs is 2n, and one fixing shaft 13 is arranged between the two connecting lugs. For example, n is 2, the number of the engaging lugs is 4, one fixing shaft 13 is positioned between two engaging lugs, and the other fixing shaft 13 is positioned between the other two engaging lugs.

Optionally, the number of the fixing shafts 13 is n, and the number of the connecting lugs is 2 n-1. When n is 2, the number of lugs is 3. Of course, a fixed shaft 13 and a coupling lug may be provided to rotatably couple the first link 21 to the coupling lug.

Wherein n is a positive integer.

In conclusion, the application provides a floor brush lifting mechanism 100 and cleaning device 200, this floor brush lifting mechanism 100 includes mount 10, link assembly 20 and driving piece 30, and cleaning device 200's floor brush 201 is installed on mount 10, and driving piece 30 drive link assembly 20 rotates, drives mount 10 and keeps away from or is close to the face of waiting to clean, can adjust floor brush 201 like this and wait to clean the height between the face, realizes the lift of floor brush 201, need not artifical manual adjustment, has improved operating efficiency. Meanwhile, the contact area between the floor brush 201 and the surface to be cleaned can be effectively increased by adjusting the height between the floor brush 201 and the surface to be cleaned, and the cleaning effect of the cleaning device 200 is improved.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A floor brush lifting mechanism, comprising:

the fixed frame is used for installing a floor brush of the cleaning equipment and comprises at least two lifting lugs arranged on the fixed frame;

the connecting rod assembly is rotatably connected with the fixed frame through at least two lifting lugs;

and the driving piece is connected with the connecting rod assembly and is used for driving the connecting rod assembly to rotate so as to drive the fixing frame to be far away from or close to the surface to be cleaned.

2. The floor brush lifting mechanism according to claim 1, wherein the link assembly comprises a first link and a second link, one end of the first link is hinged to the fixing frame, the other end of the first link is hinged to one end of the second link, and the other end of the second link is connected to the driving member.

3. The floor brush lifting mechanism according to claim 2, wherein at least two of the lifting lugs are arranged on the fixing frame at intervals, an accommodating space is formed between at least two adjacent lifting lugs, one end of the first connecting rod is located in the accommodating space, and one end of the first connecting rod is respectively connected with the two lifting lugs in a rotating manner.

4. A floor brush lifting mechanism according to claim 3, wherein one end of the first link is connected to at least two of the lifting lugs via a rotating shaft.

5. A floor brush lifting mechanism according to claim 2, wherein the first link is connected to the second link by a pin, and the holder, the first link, the second link and the driving member form a four-bar linkage.

6. The floor brush lifting mechanism according to any one of claims 1 to 5, wherein the fixing frame is provided with a receiving groove along a length direction thereof, and the floor brush is rotatably mounted in the receiving groove.

7. The floor brush lifting mechanism according to claim 6, wherein the accommodating groove has two groove walls opposite to the two ends of the floor brush in the length direction, one of the groove walls is provided with a through hole, the other groove wall is provided with an arc-shaped opening, one end of the floor brush close to the through hole is provided with a connecting shaft matched with the through hole, and the other end of the floor brush is rotatably located at the arc-shaped opening.

8. A cleaning appliance comprising a floor brush and a floor brush lifting mechanism as claimed in any one of claims 1 to 7, the floor brush being rotatably mounted to the mounting bracket.

9. The cleaning apparatus as claimed in claim 8, further comprising a driving mechanism, wherein an output end of the driving mechanism is connected to the floor brush for driving the floor brush to rotate, and a housing of the driving mechanism is connected to the fixing frame.

10. The cleaning apparatus defined in claim 8, wherein the drive is mounted on a base or a center frame of the cleaning apparatus; and/or the base or the middle frame is provided with a mounting groove matched with the shape of the fixing frame, a connecting piece is arranged on the inner wall of the mounting groove, a fixing shaft connected with the connecting piece in a rotating mode is arranged on the fixing frame, and a through hole used for the connecting rod assembly to penetrate through is formed in the mounting groove.

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