CN219183584U - Support and cleaning machine - Google Patents

Abstract

The utility model discloses a support and discloses a cleaning machine with the support, wherein the cleaning machine comprises a bottom plate and a coaming, the coaming is positioned at the top of the bottom plate, the inner side of the coaming is used for accommodating an ejector of an ejector device of a base station of the cleaning machine, the bottom plate is provided with a through hole which is communicated up and down, the through hole is used for accommodating power connection and driving the ejector to lift, the coaming prevents the ejector from rotating through a limiting protrusion and a limiting groove which accommodates the limiting protrusion, the coaming is provided with one of the limiting protrusion and the limiting groove, and at least one of the limiting protrusion and the limiting groove extends along the up-down direction. The support and the cleaning machine can prevent the ejection piece from rubbing the maintenance platform and prevent the maintenance platform from being damaged.

Description

Support and cleaning machine

Technical Field

The utility model relates to a structure of a cleaning machine, in particular to a bracket and the cleaning machine.

Background

The cleaner is a device for cleaning the floor by means of sweeping, flushing, scrubbing and the like.

The cleaning machine is a cleaning machine with special functions, is suitable for cleaning hard ground and sucking sewage at the same time, and can remove the sewage from cleaning machines on site, and has the advantages of environmental protection, energy saving, high efficiency and the like.

Structurally, the floor washing machine includes a base station and a robot, that is, the cleaning machine includes the base station and the robot, the robot can move to clean a floor, and when the robot returns to the base station, the robot can climb to a maintenance platform of the base station, and the base station can maintain the robot, such as discharging sewage.

Specifically, the robot is provided with a sewage tank, the bottom of the sewage tank is provided with a drain hole, a drain valve is arranged in the drain hole, and the drain valve is provided with a plug and a spring for pressing the plug.

The maintenance platform of the base station is provided with an ejection device, the ejection device is provided with an ejection piece, the ejection piece is positioned below the maintenance platform, the ejection piece can upwards pass through the maintenance platform, and then, the ejection piece is inserted into the drain hole to jack up the plug, and sewage is discharged through the drain hole.

In the prior art, the maintenance platform is provided with a chute for accommodating the lifting of the ejection piece, the chute penetrates up and down, and the chute allows the ejection piece to be ejected upwards to start draining.

However, lifting and lowering of the ejector member rubs against the maintenance table, resulting in damage to the maintenance table.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the bracket which can prevent the ejection piece from rubbing the maintenance platform and prevent the maintenance platform from being damaged.

The utility model also provides a cleaning machine with the bracket.

According to the support of the first aspect of the embodiment of the utility model, the support comprises a bottom plate and a coaming, wherein the coaming is positioned at the top of the bottom plate, the inner side of the coaming is used for accommodating an ejector of an ejector device of a base station of a cleaning machine, the bottom plate is provided with a through hole which is communicated up and down, the through hole is used for accommodating power connection and driving the ejector to lift, the coaming prevents the ejector from rotating through a limiting protrusion and a limiting groove which accommodates the limiting protrusion, and the coaming is provided with one of the limiting protrusion and the limiting groove, and at least one of the limiting protrusion and the limiting groove extends along the up-down direction.

According to the support of the embodiment of the first aspect of the utility model, the coaming is provided with the limit groove, and the limit groove is communicated with the inner side and the outer side of the coaming.

According to the support of the first aspect of the embodiment of the utility model, the coaming is provided with the limit groove, the limit groove is communicated with the inner side and the outer side of the coaming, the top and the bottom of the limit groove are open, and the limit groove is communicated with the through hole.

According to the support of the first aspect of the embodiment of the utility model, the coaming is provided with a pair of limiting parts extending along the inner and outer directions of the coaming, and the limiting groove is formed between the two limiting parts.

According to an embodiment of the first aspect of the utility model, the top edge of the shroud is adapted to directly or indirectly abut the base station.

According to an embodiment of the first aspect of the utility model, the outside of the shroud is provided with a first cover for covering a limit detector for detecting the height position of the ejector.

According to the support of the embodiment of the first aspect of the utility model, the outer side of the coaming is provided with a second cover, and the second cover is used for covering a transmission part for driving the ejection piece to lift.

According to the support of the first aspect of the embodiment of the utility model, the side, away from the coaming, of the second cover is provided with a clamping part.

According to an embodiment of the first aspect of the utility model, the shroud comprises an extension extending along the outer contour of the base plate.

According to the support of the first aspect of the embodiment of the utility model, the outer side of the expansion part is provided with a mounting lug, the mounting lug is used for arranging a locking bolt, the locking bolt is used for self-assembly of the ejection device, the outer side of the expansion part is provided with a concave part, and the concave part is used for accommodating the head part of the locking bolt.

A cleaning machine according to an embodiment of the second aspect of the utility model comprises a stand as described in any of the above.

The bracket and the cleaning machine provided by the embodiment of the utility model have at least the following beneficial effects:

1. according to the utility model, the support is arranged, so that the support comprises the bottom plate and the coaming, the coaming is positioned at the top of the bottom plate, and the inner side of the coaming is used for accommodating the ejection piece, so that on one hand, the ejection piece can be limited by using the bottom plate and the coaming, the sliding fit between the ejection piece and the maintenance platform is omitted, the maintenance platform is prevented from being damaged due to friction, and on the other hand, the coaming is used for separating the ejection piece from the outside, and the influence of foreign matters on lifting of the ejection piece is reduced.

2. Meanwhile, the sliding fit of the ejection piece and the maintenance platform is omitted, so that the maintenance platform does not need to be provided with a nozzle for accommodating the sliding of the ejection piece, the manufacturing difficulty of the maintenance platform is reduced, and further, the maintenance platform is convenient to seal, and sewage leakage is avoided.

3. Alternatively, the top edge of the coaming can be abutted to the maintenance platform, so that the stability of the support is improved, or the coaming can be abutted to the sealing element on the maintenance platform, so that the sealing strength can be improved, the sealing element is prevented from being separated, and sporadic sewage can be guided to the outside of the coaming without affecting the operation of the ejection device.

4. According to the utility model, the support is arranged, so that the support comprises the bottom plate and the coaming, the bottom plate is provided with the through holes which are communicated up and down, the through holes are used for accommodating power connection and driving the ejection piece to lift, and the coaming is used for preventing the ejection piece from rotating through the limiting protrusion and the limiting groove for accommodating the limiting protrusion, so that the ejection piece is driven to lift conveniently by using the screw rod structure, the occupation of the ejection device on the surrounding space of the top of the ejection piece is reduced, the upward abrupt of a maintenance platform is reduced or even avoided, and the drainage and the climbing back of the robot are not influenced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a cleaning machine according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a part of a base station of the cleaning machine shown in FIG. 1;

FIG. 3 is a schematic view of the complete structure of the ejector shown in FIG. 2;

FIG. 4 is a partially expanded schematic illustration of the ejector shown in FIG. 3;

FIG. 5 is a schematic view of the structure of the support of the ejector of FIG. 4;

FIG. 6 is a schematic view of another orientation of the bracket of FIG. 5;

FIG. 7 is a schematic view of a modified embodiment of the stand of FIG. 5;

fig. 8 is a schematic view of another direction of the bracket of fig. 7.

Reference numerals: 100-base station, 110-robot, 120-ejector, 130-ejector, 140-rotor, 150-worm, 160-motor, 170-seal, 180-mounting rack, 190-bracket, 200-bottom plate, 210-coaming, 220-through hole, 230-limit slot, 250-limit part, 260-first cover, 270-second cover, 280-expansion part, 290-mounting ear, 300-concave part, 310-buckle part.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A cradle and a base station of a cleaning machine according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

Referring to fig. 1, the present utility model is directed to an embodiment of a cleaning machine, and more particularly, to an embodiment of a floor scrubber.

The cleaning machine has a robot 110 and a base station 100, the robot 110 can walk, thereby cleaning the floor in a large area, the base station 100 is used for cleaning and maintenance, the base station 100 has a maintenance platform, the top surface of the maintenance platform is a slope, and the slope is used for the robot 110 to climb back.

Referring to fig. 2, the present utility model also provides an embodiment of a base station 100 of a cleaning machine.

The maintenance platform is provided with an ejector device 120, the ejector device 120 is provided with an ejector 130, the ejector 130 can lift up to jack up a sewage valve of a sewage tank on the robot 110, so that drainage is started, and when the ejector 130 descends, the ejector 130 is separated from the sewage valve, the sewage valve is automatically closed, the drainage is stopped, and the running of the robot 110 is not affected.

Specifically, the ejector 130 has an ejector pin that passes upward through the maintenance station to control drainage.

In the prior art, the maintenance platform is provided with a chute, the chute is formed by the inner surface of a nozzle, and the ejector 130 slides up and down along the chute, so that lifting can be completed.

However, the slide groove and the ejector 130 are easily worn, and the slide groove and the ejector 130 are limited in size and insufficient in strength.

Referring to fig. 2, 3 and 4, the present utility model also provides an embodiment of an ejector 120 of a base station 100 of a cleaning machine.

In summary, the ejector 120 has a mounting frame 180, the mounting frame 180 is provided with the ejector 130, and the mounting frame 180 is further provided with a rotating member 140 that drives the ejector 130 up and down.

Wherein the rotation member 140 is provided with external threads and the ejection member 130 is provided with internal threads, and the mounting frame 180 is provided with a bracket 190, the bracket 190 defining the ejection member 130, and the bracket 190 allowing the ejection member 130 to be lifted without rotation, so that when the rotation member 140 rotates, the ejection member 130 can be lifted under the transmission of the external threads and the internal threads while being limited by the bracket 190.

In addition, the mounting frame 180 is provided with a motor 160 and a worm 150, and the rotating member 140 is provided with an external gear, so that the motor 160 drives the worm 150 to rotate, the worm 150 is meshed with the external gear, that is, a transmission structure of matching the worm wheel and the worm 150 is adopted, the rotating member 140 can be driven to rotate, and finally, lifting of the ejection member 130 is realized.

With reference to fig. 4, 5 and 6, with emphasis on improvements, the present utility model is directed to providing an embodiment of a bracket 190.

Logically clear, the support 190 is part of the mounting frame 180, the mounting frame 180 is part of the ejector 120, the ejector 120 is part of the base station 100, and the base station 100 is part of the cleaning machine.

Specifically, the support 190 includes a base plate 200 and a surrounding plate 210, the surrounding plate 210 is located at the top of the base plate 200, the inner side of the surrounding plate 210 is used for accommodating the ejector 130, the base plate 200 is provided with a through hole 220 which is communicated up and down, and the through hole 220 accommodates power connection and drives the ejector 130 to lift.

In some embodiments of the present utility model, the coaming 210 may extend along the wall of the through hole 220, so as to reduce the occupied space of the ejector 120 in the horizontal direction of the top of the ejector 130, and at the same time, may reasonably limit the ejector 130, so as to facilitate assembly.

In some embodiments of the utility model, shroud 210 includes an extension 280, extension 280 extending along the outer contour of base 200.

It is easy to understand that, increasing the size of the outer periphery of the support 190 in the up-down direction facilitates the arrangement of mounting points, avoiding the influence of the strength caused by the mounting points being connected only to the base plate 200, and at the same time, a gap can be reserved between the coaming 210 and the ejector 130, so as to adapt to the space change and air flow caused by the lifting of the ejector 130.

In some embodiments of the present utility model, the outer side of the expansion part 280 is provided with a mounting ear 290, the mounting ear 290 is used to provide a locking bolt for self-assembly of the ejector 120, the outer side of the expansion part 280 is provided with a recess 300, and the recess 300 accommodates the head of the locking bolt.

It is easy to understand that, on the one hand, the distance from the locking screw to the center of the ejector 130 can be reduced by the recess 300, which is helpful for reducing the volume of the ejector 120, and meanwhile, the physical connection between the coaming 210 and the mounting ear 290 is increased, so that the strength of the mounting ear 290 is improved, on the other hand, the coaming 210 is bent in a meandering manner, and the rigidity of the coaming 210 is improved, so that the coaming 210 is not easy to bend.

In some embodiments of the present utility model, the diameter of the through hole 220 of the base plate 200 is larger than the diameter of the ejector 130, that is, the through hole 220 allows the ejector 130 to pass through, so that the ejector 130 and the rotating member 140 are conveniently assembled and disassembled, for example, the ejector 130 and the rotating member 140 are first screwed together, and then the bracket 190 can be moved up and down to be assembled and disassembled without rotating the rotating member 140 to be adapted.

Meanwhile, the through hole 220 allows the ejector 130 to pass through, so that the lifting range of the ejector 130 can be increased, and the height of the ejector 120 can be reduced, and meanwhile, the requirement of the ejector 130 on the lifting range is met.

In some embodiments of the present utility model, the bottom of the base plate 200 is further provided with an annular protrusion, which may be a complete ring or may be divided into multiple segments, so that the annular protrusion abuts against the rotating member 140, thereby reducing contact between the base plate 200 and the rotating member 140, reducing friction, and facilitating rotation of the rotating member 140.

Meanwhile, the annular protrusion may deviate from the rotation center of the rotating member 140, and further, define the rotating member 140 from a position far away from the rotation center of the rotating member 140, so as to improve stability of the rotating member 140, make the rotating member 140 not swing easily, and further, avoid stress distortion of a rotating shaft connected with the rotating member 140 on the ejector 120, where the rotating shaft is located at the rotation center of the rotating member 140, and the rotating shaft participates in realizing rotational connection of the rotating member 140.

In order to adapt to the requirement that the rotating member 140 drives the ejector member 130 to lift through the screw rod structure, a limiting protrusion and a limiting groove 230 for accommodating the limiting protrusion are arranged between the coaming 210 and the ejector member 130.

In other words, the limiting groove 230 may be provided on the enclosing plate 210, and the limiting protrusion may be provided on the ejector 130, as shown in fig. 5, 6, 7 and 8, and of course, the limiting groove 230 may be provided on the ejector 130, and the limiting protrusion may be provided on the enclosing plate 210.

Meanwhile, in order to prevent the ejector 130 from rotating during the lifting process, at least one of the limit protrusion and the limit groove 230 extends in the up-down direction, so that the limit protrusion and the limit groove 230 do not fall off when the ejector 130 is lifted, ensuring that the rotation-limiting effect is continuously effective.

It is easy to understand that at least one of the limit protrusion and the limit groove 230 extends in the up-down direction, and it should be understood that: the limit protrusion extends in the up-down direction, or the limit groove 230 extends in the up-down direction, or both the limit protrusion and the limit groove 230 extend in the up-down direction.

As for the length of the limit protrusion and the limit groove 230 extending in the up-down direction, the adjustment can be adapted according to the lifting stroke of the ejector 130 and the condition of selecting extension, so as to meet the use requirement.

It should be noted that the number of the limiting protrusions and the limiting grooves 230 may be more than one or a pair, but both increase the structure, increase the manufacturing cost and the difficulty of arrangement.

As for the limiting protrusion and the limiting groove 230, on the basis that the rotating member 140 drives the ejector member 130 to lift through the screw rod structure, the rotating member may be a straight plate or a straight groove.

In some embodiments of the present utility model, the cross-section of the limiting protrusion and the limiting groove 230 may be T-shaped or dovetail-shaped, so as to adapt to other structures for driving the ejector 130 to lift, such as sliding the ejector 130 up and down with respect to the support frame 190, which still eliminates the sliding connection between the ejector 130 and the maintenance platform, so that the support frame 190 is easy to be used universally.

To sum up, in this embodiment, by providing the support 190, the support 190 includes the base plate 200 and the enclosing plate 210, the enclosing plate 210 is located at the top of the base plate 200, and the inner side of the enclosing plate 210 is used for accommodating the ejector 130, so, on one hand, the ejector 130 can be limited by using the base plate 200 and the enclosing plate 210, and the sliding fit between the ejector 130 and the maintenance platform is omitted, so as to avoid damage to the maintenance platform due to friction, and on the other hand, the ejector 130 is separated from the outside by using the enclosing plate 210, so as to reduce the influence of foreign matters on the lifting of the ejector 130.

Secondly, simultaneously, because the sliding fit of the ejection piece 130 and the maintenance platform is omitted, the maintenance platform does not need to be provided with a nozzle for accommodating the sliding of the ejection piece 130, the manufacturing difficulty of the maintenance platform is reduced, and further, the maintenance platform is convenient to seal, and sewage leakage is avoided.

In the prior art, the nozzle is arranged to increase the sliding fit length and resist the deflection of the ejection member 130, however, if the nozzle is arranged at the bottom of the maintenance platform, the sealing member 170 is difficult to be arranged in the nozzle, and even if the sealing member 170 is arranged, the sealing member 170 is easy to be worn due to the lifting and lowering of the ejection member 130; if the nozzle is disposed on top of the maintenance platform, the part of the maintenance platform is usually lowered to avoid the nozzle being higher than the surface of the maintenance platform, but this is inconvenient for draining, and the sealing member 170 is often coated on the outside of the nozzle, so that a flange is required to be disposed on the nozzle to prevent the nozzle from falling off, but the disposition of the flange increases the difficulty of the injection molding process, which causes various problems.

Thus, with the bracket 190 of the present embodiment, a series of problems associated with the sliding fit of the ejector 130 to the maintenance station can be eliminated.

In addition, optionally, the top edge of the coaming 210 may abut against the maintenance platform to improve the stability of the support 190, or the coaming 210 may abut against the sealing member 170 on the maintenance platform, so as to not only improve the sealing strength, but also prevent the sealing member 170 from falling out, and guide occasional sewage out of the coaming 210, without affecting the operation of the ejector 120.

This is because the maintenance platform has no corresponding nozzle, the sealing member 170 may be clamped to the maintenance platform through the outer clamping groove, and the coaming 210 may abut against the entity forming the outer clamping groove on the sealing member 170, thereby improving the waterproof effect.

Further, in this embodiment, by setting the support 190, the support 190 includes the bottom plate 200 and the enclosing plate 210, the bottom plate 200 is provided with the through hole 220 that communicates from top to bottom, the through hole 220 accommodates the power connection and drives the ejector 130 to lift, the enclosing plate 210 prevents the ejector 130 from rotating through the spacing protrusion and the spacing groove 230 that accommodates the spacing protrusion, thus, the ejector 130 is driven to lift by conveniently using the screw rod structure, thus, occupation of the peripheral space of the top of the ejector 130 by the ejector 120 is reduced, upward abrupt of the maintenance table is reduced or even avoided, and drainage and climbing back of the robot 110 are not affected.

In some embodiments of the present utility model, the coaming 210 is provided with a limit groove 230, and the limit groove 230 communicates with the inner side and the outer side of the coaming 210, so that the limit protrusion may protrude to the outer side of the coaming 210, so that the limit protrusion may have other functions, such as detecting the height position of the limit protrusion to determine the height of the ejector 130, and thus, accurately controlling the lifting of the ejector 130.

Or, the initial assembly requirement is omitted, for example, the rotating member 140 is screwed into the ejector member 130 for an indefinite length, then the remaining assembly is performed, then the detection is performed, and the rotation of the rotating member 140 is controlled according to the detection result, so that the ejector member 130 is at the bottommost position or the set initial state, and the use is not hindered, or at least the mounting of the ejector device 120 on the maintenance platform is not hindered.

In some embodiments of the present utility model, the top and bottom of the limiting groove 230 are opened, and the limiting groove 230 communicates with the through hole 220.

It is easy to understand that even if the ejector 130 is provided with the limit protrusion, the bracket 190 can be detached without being obstructed, without being affected by the ejector 130.

In some embodiments of the present utility model, shroud 210 has a pair of detents 250 extending in the inward and outward directions of shroud 210, with a detent slot 230 formed between detents 250.

It is easy to understand that, by providing the limiting portion 250, the strength of the base plate 200 can be improved, and the base plate 200 is prevented from being easily deformed due to being divided by the limiting groove 230.

Referring to fig. 7 and 8, in some embodiments of the present utility model, a first cover 260 is provided on the outside of shroud 210, and first cover 260 is used to cover a limit detector for detecting the height position of ejector 130.

It is easily known that the detector is inserted in the up-down direction, and then the bracket 190 is mounted, preferably such that the first cover 260 is positioned on top of the detector, and thus, the first cover 260 limits the detector from above, preventing the detector from coming out, and simplifying the structure without additional fasteners.

In some embodiments of the present utility model, a second cover 270 is provided on the outer side of the coaming 210, and the second cover 270 is used to cover a transmission member for driving the ejector 130 to lift.

It will be readily appreciated that this embodiment, by providing the second cover 270, may be conveniently mated with other components of the mounting bracket 180 to locate and house the worm 150, reducing external interference.

In some embodiments of the present utility model, the top of the second cover 270 is provided with reinforcing ribs arranged vertically and horizontally, which improves the strength of the second cover 270, and at the same time, does not affect the arrangement of the maintenance platform by increasing the height of the second cover 270 less.

In some embodiments of the utility model, the side of the second cover 270 remote from the shroud 210 is provided with a catch 310.

The fastening part 310 can be a fastening groove or a fastening protrusion, and the fastening part 310 is arranged according to the requirement, so that a screw can be omitted, and meanwhile, the specification of the ejection device 120 is reduced, and the arrangement requirement of the maintenance table is met.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. The support is characterized by comprising a bottom plate (200) and a surrounding plate (210), wherein the surrounding plate (210) is located at the top of the bottom plate (200), the inner side of the surrounding plate (210) is used for accommodating an ejection piece (130) of an ejection device (120) of a base station (100) of a cleaning machine, the bottom plate (200) is provided with a through hole (220) which is communicated up and down, the through hole (220) is used for accommodating power connection and driving the ejection piece (130) to lift, the surrounding plate (210) is used for preventing the ejection piece (130) from rotating through a limiting protrusion and a limiting groove (230) which are arranged in the surrounding plate (210), and at least one of the limiting protrusion and the limiting groove (230) extends along the up-down direction.

2. The bracket according to claim 1, characterized in that the coaming (210) is provided with the limit groove (230), the limit groove (230) communicating the inside and the outside of the coaming (210).

3. The bracket according to claim 1, wherein the coaming (210) is provided with the limit groove (230), the limit groove (230) communicates with the inside and the outside of the coaming (210), the top and the bottom of the limit groove (230) are open, and the limit groove (230) communicates with the through hole (220).

4. The bracket according to claim 1, wherein the shroud (210) has a pair of stopper portions (250) extending in an inner-outer direction of the shroud (210), and the stopper groove (230) is formed between the stopper portions (250).

5. The bracket of claim 1, wherein a top edge of the shroud (210) is adapted to directly or indirectly abut the base station (100).

6. The bracket according to claim 1, characterized in that the outside of the shroud (210) is provided with a first cover (260), the first cover (260) being intended to cover a defined detector for detecting the height position of the ejector (130).

7. The bracket according to claim 1, characterized in that a second cover (270) is provided on the outer side of the coaming (210), and the second cover (270) is used for covering a transmission component for driving the ejector (130) to lift.

8. The bracket according to claim 7, characterized in that a side of the second cover (270) remote from the shroud (210) is provided with a snap-fit portion (310).

9. The bracket of claim 1, wherein the shroud (210) includes an extension (280), the extension (280) extending along an outer contour of the base plate (200).

10. A cleaning machine comprising a stand according to any one of claims 1 to 9.

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