CN218635937U - Cleaning device and clean basic station - Google Patents

Abstract

The utility model provides a cleaning device and clean basic station belongs to cleaning equipment technical field. The cleaning device comprises a shell, a driving device, a screw rod, a protection switch, a first connecting pipe and a second connecting pipe; an output shaft of the driving device is in transmission connection with the screw rod through a gear box; the screw rod and the second connecting pipe are respectively arranged in the shell, and one end of the first connecting pipe is slidably sleeved on the second connecting pipe to form a telescopic pipe; the first limit switch and the second limit switch are respectively and electrically connected with the driving device to limit the first connecting pipe; the screw rod is sleeved with a screw rod nut, and the first connecting pipe is connected with the screw rod nut; the protection switch is arranged on the gear box and electrically connected to the driving device, and a gap is formed between the screw rod and the protection switch. Through protection switch's setting, can control drive arrangement stop operation to form the guard action to cleaning device, promote cleaning device's security and stability in the use.

Description

Cleaning device and clean basic station

Technical Field

The utility model relates to a cleaning equipment technical field especially relates to a cleaning device and clean basic station.

Background

The extension direction or the extension length of a sewage suction pipe in the existing cleaning device cannot be controlled according to actual conditions in the extension process, and if a child touches the sewage suction pipe curiously, the sewage suction pipe still extends, so that the hands of the child can be damaged, and potential safety hazards are easy to occur. In addition, when the sewage suction pipe encounters an obstacle in the process of extension, if the operation of the sewage suction pipe is not stopped in time, the cleaning device is easily damaged, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a cleaning device and a cleaning base station to overcome the disadvantages of the prior art.

The utility model provides a following technical scheme: a cleaning device comprises a shell, a driving device, a screw rod, a protection switch, a first connecting pipe and a second connecting pipe;

an output shaft of the driving device is in transmission connection with the screw rod through a gear box;

the screw rod and the second connecting pipe are respectively arranged in the shell, and one end of the first connecting pipe is slidably sleeved on the second connecting pipe to form a telescopic pipe;

a first limit switch and a second limit switch which are spaced are arranged inside the shell, and the first limit switch and the second limit switch are respectively and electrically connected to the driving device so as to limit the first connecting pipe;

the screw rod is sleeved with a screw rod nut, and the first connecting pipe is connected with the screw rod nut;

the protective switch is arranged on the gear box and electrically connected to the driving device, and a gap is formed between the screw rod and the protective switch;

when the first connecting pipe drives the screw rod to move towards the protection switch under the action of external force and triggers the protection switch, the driving device stops running or controls the screw rod to drive the first connecting pipe to move towards the position close to the protection switch.

In some embodiments of the utility model, the lead screw is close to a pot head of protection switch is equipped with bearing and a reset spring, a reset spring's one end with the bearing is inconsistent, a reset spring's the other end with the external screw thread of lead screw is inconsistent.

Furthermore, a push rod is arranged at one end, close to the protection switch, of the screw rod, the screw rod and one end of the push rod are respectively arranged in the gear box in a penetrating mode, a gap is formed between the push rod and the screw rod, and a gap is formed between the other end of the push rod and the protection switch.

Further, the distance from one end, close to the protection switch, of the push rod to the protection switch is smaller than the distance from one end, close to the bearing, of the external thread in the screw rod to the bearing.

Furthermore, the screw rod and the push rod are coaxially arranged, and the protection switch is positioned on an extension line of the axis of the screw rod.

Furthermore, a limit ring is arranged on the circumference of the push rod, and a bearing table is arranged on the inner wall of the limit gear so as to limit the push rod and the limit ring through the bearing table;

the push rod is sleeved with a second reset spring, the second reset spring is located between the limiting gear and the push rod, one end of the second reset spring is abutted to the limiting ring, and the other end of the second reset spring is in contact with the protection switch.

Furthermore, one side of the first connecting pipe, which is close to the first limit switch and the second limit switch, is provided with a protrusion, and the protrusion can trigger the first limit switch and the second limit switch.

Furthermore, a sealing rubber sleeve is arranged between the first connecting pipe and the second connecting pipe, the sealing rubber sleeve is arranged on the inner wall of the first connecting pipe, and the sealing rubber sleeve is inconsistent with the outer wall of the second connecting pipe.

Furthermore, one end, far away from the driving device, of the second connecting pipe is provided with a sealing ring, the sealing ring is arranged on the outer wall of the second connecting pipe, and the sealing ring is abutted to the inner wall of the first connecting pipe.

Some embodiments of the present invention provide a cleaning base station, comprising a base station body and the cleaning device;

the cleaning device is arranged in the base station body;

the base station body comprises a sewage suction pump, a first liquid storage tank and a second liquid storage tank, and the second connecting pipe is communicated with the second liquid storage tank through a guide pipe;

the sewage suction pump is communicated with the flow guide pipe.

The embodiment of the utility model has the following advantage: through the inside at the casing set up first limit switch of looks spaced and second limit switch to make first connecting pipe can trigger first limit switch or second limit switch at the in-process that moves along its axis direction, with form spacingly at the removal in-process to first connecting pipe, promote the flexible pipe stability at extension or shrink in-process.

Meanwhile, a protection switch is arranged on the gear box and is electrically connected with the driving device, when the first connecting pipe drives the screw rod to move towards the protection switch under the action of external force and triggers the protection switch, the protection switch can control the driving device to stop running or control the driving device to move, the first connecting pipe is driven to move close to the protection switch through the screw rod, so that the protection effect on the cleaning device is formed, the condition that the telescopic pipe in the cleaning device is damaged when encountering obstacles in the extending process is avoided, meanwhile, the telescopic pipe is prevented from damaging external objects in the extending process, and the safety and the stability of the cleaning device in the using process are improved.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic view of a cleaning device according to some embodiments of the present invention;

fig. 2 is a schematic view of a view of the interior of a cleaning device according to some embodiments of the present invention;

fig. 3 is a schematic view of another perspective of a cleaning device provided by some embodiments of the present invention;

FIG. 4 showsbase:Sub>A cross-sectional view of section A-A of FIG. 3;

fig. 5 is a schematic structural diagram illustrating a view angle of a screw rod connected to a gear box in a cleaning device according to some embodiments of the present invention;

FIG. 6 shows a cross-sectional view of section B-B of FIG. 5;

FIG. 7 shows an enlarged view of section C of FIG. 6;

fig. 8 is a schematic view of a view angle of a screw rod in a cleaning device according to some embodiments of the present invention.

Description of the main element symbols:

10-a housing; 20-a drive device; 30-a screw rod; 40-a protection switch; 50-a telescopic pipe; 501-a first connection pipe; 502-a second connecting tube; 60-a gearbox; 601-limit gear; 70-a first limit switch; 80-a second limit switch; 90-screw nut; 100-a bearing; 110-a first return spring; 120-a push rod; 130-a stop collar; 140-a receiving station; 150-a second return spring; 160-bumps; 170-sealing rubber sleeve; 180-a sealing ring; 190-a flow guide pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 invention, and should not be construed as limiting the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

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 to implicitly indicate 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 invention, "a plurality" means two or more unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the templates is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2, 4 and 8, some embodiments of the present invention provide a cleaning device, which is mainly used for extracting sewage in a sewage tank of a sweeping robot. The cleaning device includes a housing 10, a driving device 20, a lead screw 30, a protection switch 40, a first connection pipe 501, and a second connection pipe 502.

It should be noted that the first connecting pipe 501 and the second connecting pipe 502 are respectively a rigid plastic pipe, a stainless steel metal pipe, a glass pipe, or a rigid rubber pipe, and can be specifically set according to actual situations.

Here, the driving device 20 may be any one of a driving motor and a stepping motor. The protection switch 40 is any one of a touch switch and a proximity switch, and may be specifically set according to actual conditions.

Specifically, the output shaft of the driving device 20 is in transmission connection with the screw rod 30 through a gear box 60. It should be noted that, in this embodiment, one end of the screw rod 30 is inserted through one gear in the gear box 60 and coaxially connected to the gear, and when the output shaft of the driving device 20 rotates, the gear in the gear box 60 is driven to rotate, and the screw rod 30 is driven to rotate, so that the output shaft of the driving device 20 is in transmission connection with the screw rod 30 through the gear box 60.

In the present embodiment, the screw rod 30 and the second connecting pipe 502 are respectively disposed inside the housing 10, and it should be noted that an axis of the screw rod 30 and an axis of the second connecting pipe 502 are parallel to each other.

Meanwhile, one end of the first connection pipe 501 is slidably sleeved on the second connection pipe 502 to form the telescopic pipe 50, and specifically, the first connection pipe 501 and the second connection pipe 502 are coaxially arranged to improve the stability of the first connection pipe 501 in the process of sliding along the axis thereof.

In addition, a first limit switch 70 and a second limit switch 80 are provided at an interval inside the housing 10. Specifically, the first limit switch 70 and the second limit switch 80 are respectively disposed at two ends of the lead screw 30 at intervals, and the distance between the first limit switch 70 and the second limit switch 80 is not greater than the length of the first connection pipe 501.

Meanwhile, the first limit switch 70 and the second limit switch 80 are electrically connected to the driving device 20, and the stop of the driving device 20 is controlled by the first limit switch 70 and the second limit switch 80, so that the first connecting pipe 501 is limited by the first limit switch 70 and the second limit switch 80 during the moving process.

Specifically, in the process that the first connecting pipe 501 moves along the axial direction thereof, when the first connecting pipe 501 moves away from the protection switch 40 and contacts the first limit switch 70, the first limit switch 70 is triggered, the driving device 20 is turned off by the first limit switch 70, at this time, the screw rod 30 stops rotating, the first connecting pipe 501 stops moving, and the current position is maintained.

When the first connection pipe 501 moves towards the direction close to the protection switch 40 and contacts the second limit switch 80, the second limit switch 80 is triggered, the driving device 20 is turned off through the second limit switch 80, at this time, the screw rod 30 stops rotating, the first connection pipe 501 stops moving, and the current position is maintained. Therefore, the first connecting pipe 501 is limited, and the stability of the first connecting pipe 501 in the moving process is improved.

In this embodiment, the first limit switch 70 and the second limit switch 80 are any one of a touch switch and a proximity switch, and can be specifically set according to actual situations.

The lead screw 30 is sleeved with a lead screw nut 90, and it can be understood that the lead screw nut 90 is in threaded connection with the lead screw 30. The first connecting pipe 501 is connected with the screw rod nut 90, that is, in the process of driving the screw rod 30 to rotate by the driving device 20, the screw rod nut 90 moves in the axial direction of the screw rod 30, and simultaneously drives the first connecting pipe 501 to move along the axial direction of the screw rod 30, that is, the extension or contraction of the first connecting pipe 501 is formed, so that the length of the telescopic pipe 50 is adjusted to extract sewage in sewage tanks at different depths, and the utilization rate of the cleaning device is improved.

In the present embodiment, the protection switch 40 is disposed on the gear box 60, and the protection switch 40 is electrically connected to the driving device 20, and the screw 30 is spaced from the protection switch 40. Specifically, the protection switch 40 is located in the axial direction of the lead screw 30.

When the first connecting pipe 501 drives the screw rod 30 to move towards the protection switch 40 under the action of an external force and triggers the protection switch 40, the driving device 20 stops operating or controls the screw rod 30 to drive the first connecting pipe 501 to move towards the protection switch 40.

Specifically, when the extension tube 50 touches an external object in the extension process, the screw rod 30 is still driven by the driving device 20 to rotate in the clockwise direction, that is, the extension tube 50 still has an extension tendency, at this time, the external object blocks the extension tube 50 in the extension process, so that the first connecting tube 501 drives the screw rod 30 to move in the direction approaching the protection switch 40 along the axis of the screw rod 30 under the action of the resistance of the external object, and when the protection switch 40 is triggered in the movement process of the screw rod 30, at this time, the driving device 20 stops operating or the driving device 20 controls the screw rod 30 to rotate in the counterclockwise direction, that is, the extension tube 50 contracts, so as to prevent the extension tube 50 from damaging the external object in the extension process, and thus improving the safety of the cleaning device in the use process.

Preferably, in some embodiments of the present invention, when the first connection pipe 501 meets an obstacle during the extension of the telescopic pipe 50, the resistance force to which the first connection pipe 501 is subjected at this time is defined as X.

Wherein, the value range of X is as follows: x is more than or equal to 7N and less than or equal to 15N, namely the value of X can be any value of 7N, 8N, 9N, 10N, 11N, 12N, 13N, 14N and 15N.

Specifically, when the resistance applied to the first connecting tube 501 is greater than X, at this time, the first connecting tube 501 drives the screw rod 30 to move toward the protection switch 40 under the action of the resistance, and triggers the protection switch 40. Damage to the drive means 20 or the telescopic tube 50 when the telescopic tube 50 encounters an obstacle during extension is avoided to improve the safety and stability of the cleaning device during operation.

When the resistance force applied to the first connection pipe 501 is not greater than X, the first connection pipe 501 can maintain the current moving state and continue to move, that is, the telescopic pipe 50 can maintain the current extending state.

For example, when the telescopic tube 50 in the cleaning device needs to be inserted into a sewage tank in the sweeping robot, the telescopic tube 50 is in the extending process, and when the first connecting tube 501 is inconsistent with a tank cover on the sewage tank, the resistance of the tank cover to the first connecting tube 501 is smaller than X, so that the telescopic tube 50 can be pushed open the tank cover on the sewage tank in the extending process, and the first connecting tube 501 can be inserted into the sewage tank to suck sewage in the sewage tank, thereby improving the utilization rate of the cleaning device and the use stability.

As shown in fig. 5 to 7, in some embodiments of the present invention, a sleeve of the screw rod 30 close to the protection switch 40 is provided with a bearing 100 and a first return spring 110, and one end of the first return spring 110 is abutted against the bearing 100, and the other end of the first return spring 110 is abutted against the external thread of the screw rod 30.

It should be noted that the bearing 100 is installed on the inner wall of the housing 10, so that the screw 30 rotates and simultaneously rotates the bearing 100. Meanwhile, one end of the screw rod 30, which is far away from the bearing 100, is rotatably connected with the housing 10 to form that the screw rod 30 rotates relative to the housing 10, so that the screw rod 30 is prevented from driving the housing 10 to rotate in the rotating process.

In the present embodiment, the protection switch 40 is disposed in the axial direction of the lead screw 30, so that the protection switch 40 can be triggered during the movement of the lead screw 30 in the axial direction thereof.

Specifically, through the arrangement of the first return spring 110, when the screw rod 30 moves towards the protection switch 40 under the action of external force, the first return spring 110 is compressed, at this time, the first return spring 110 stores elastic potential energy, and when the external force acting on the screw rod 30 is removed, the first return spring 110 pushes the screw rod 30 to move towards the direction away from the protection switch 40 under the action of elastic force, and the screw rod 30 is enabled to recover the initial position, and meanwhile, the second protection switch 40 is disconnected.

As shown in fig. 6 and fig. 7, in some embodiments of the present invention, one end of the lead screw 30 close to the protection switch 40 is provided with a push rod 120, one end of the push rod 120 is inserted into the limit gear 601 in the gear box 60, so as to drive the lead screw 30 to rotate synchronously through the limit gear 601 while driving the gear in the gear box 60 to rotate through the output shaft of the driving device 20. It will be appreciated that the limit gear 601 is a gear in the gear box 60, and the axis of the limit gear 601 is coincident with the axis of the lead screw 30.

It should be noted that, as shown in fig. 7, in order to improve the connection stability between the screw rod 30 and the limit gear 601 and avoid the phenomenon that the limit gear 601 slides with the screw rod 30 in the rotating process, one end of the screw rod 30 penetrates through the limit gear 601, and one end of the screw rod 30 close to the limit gear 601 is of a polygonal column structure and is matched with the inner wall of the limit gear 601.

In this embodiment, one end of the screw rod 30 close to the limit gear 601 is a triangular prism structure, so as to improve the stability of the screw rod 30 in the process of rotating along with the limit gear 601.

In addition, the axis of the push rod 120 coincides with the axis of the limit gear 601, a gap is formed between the push rod 120 and the lead screw 30, and a gap is formed between the other end of the push rod 120 and the protection switch 40.

Specifically, the push rod 120 is arranged between the screw rod 30 and the limit switch, so that the screw rod 30 is abutted against the push rod 120 in the process of moving towards the protection switch 40 under the action of external force, and the push rod 120 is pushed to move towards the protection switch 40, so that the push rod 120 is abutted against the protection switch 40, and the protection switch 40 is triggered, so that the driving device 20 stops operating, that is, the screw rod 30 stops rotating, or the driving device 20 drives the screw rod 30 to rotate and drives the telescopic rod to contract, that is, the first connecting pipe 501 is driven to move towards the protection switch 40.

As shown in fig. 7, in some embodiments of the present invention, a limiting ring 130 is disposed around the push rod 120, a second return spring 150 is sleeved on the push rod 120, the second return spring 150 is located between the limiting gear 601 and the push rod 120, one end of the second return spring 150 abuts against the limiting ring 130, and the other end of the second return spring 150 contacts with the protection switch 40.

It should be noted that, in this embodiment, the receiving platform 140 is disposed on the inner wall of the limit gear 601 to form a limit with the limit ring 130 through the receiving platform 140, and the push rod 120 is supported by the receiving platform 140, so that the push rod 120 is prevented from sliding out of the limit gear 601, and the stability of the push rod 120 in the limit gear 601 is improved.

A gap is formed between the push rod 120 and the screw rod 30, so that the screw rod 30 is prevented from driving the push rod 120 to rotate in the rotating process, and the stability of the screw rod 30 in the rotating process is improved.

In addition, through the arrangement of the second return spring 150, the push rod 120 extrudes the second return spring 150 in the process of moving to the protection switch 40, at this time, the second return spring 150 stores elastic potential energy in the process of compression, and when the external force acting on the lead screw 30 is removed, the second return spring 150 pushes the push rod 120 to restore the initial position under the action of the elastic force, and simultaneously, the second protection switch 40 is switched off, and meanwhile, the first return spring 110 pushes the lead screw 30 to move in the direction away from the protection switch 40 under the action of the elastic force, and the lead screw 30 restores the initial position.

As shown in fig. 2 and 5, in some embodiments of the present invention, a protrusion 160 is disposed on one side of the first connecting pipe 501 close to the first limit switch 70 and the second limit switch 80, and the protrusion 160 can trigger the first limit switch 70 and the second limit switch 80.

Specifically, when the first connecting pipe 501 moves toward the protection switch 40 and the protrusion 160 disposed on the sidewall of the first connecting pipe 501 abuts against the first limit switch 70, the first limit switch 70 is triggered, and at this time, the driving device 20 is controlled by the first limit switch 70 to stop running, that is, the screw rod 30 stops rotating, and the first connecting pipe 501 stops moving. In addition, when the first connection pipe 501 moves away from the protection switch 40 and the protrusion 160 of the sidewall of the first connection pipe 501 abuts against the second limit switch 80, the second limit switch 80 is triggered, and at this time, the second limit switch 80 controls the driving device 20 to stop operating, that is, the screw rod 30 stops rotating, and the second connection pipe 502 stops moving.

It should be noted that the distance between the first limit switch 70 and the second limit switch 80 is not greater than the length of the lead screw 30.

As shown in fig. 3, fig. 4 and fig. 6, in some embodiments of the present invention, the first connecting pipe 501 and the second connecting pipe 502 are provided with the sealing rubber sleeve 170 therebetween, specifically, the sealing rubber sleeve 170 is disposed at one end of the first connecting pipe 501 close to the protection switch 40, and the sealing rubber sleeve 170 is embedded in the inner wall of the first connecting pipe 501 to improve the stability of the sealing rubber sleeve 170 on the first connecting pipe 501, meanwhile, the sealing rubber sleeve 170 is inconsistent with the outer wall of the second connecting pipe 502, the sealing quality of the first connecting pipe 501 in the moving process on the second connecting pipe 502 is improved by the sealing rubber sleeve 170, and the sewage is prevented from leaking between the first connecting pipe 501 and the second connecting pipe 502 in the process of extracting the sewage through the telescopic pipe 50.

In addition, in order to further improve the sealing quality of the telescopic tube 50, a sealing ring 180 is disposed at one end of the second connecting tube 502 far away from the driving device 20, wherein the sealing ring 180 is embedded in the outer wall of the second connecting tube 502 and abuts against the inner wall of the first connecting tube 501 through the sealing ring 180 to form a seal between the first connecting tube 501 and the second connecting tube 502.

It can be understood that, by the design of the sealing rubber sleeve 170 and the sealing ring 180, a double sealing structure is formed between the first connecting pipe 501 and the second connecting pipe 502, so as to further improve the sealing quality between the first connecting pipe 501 and the second connecting pipe 502, and simultaneously improve the sealing quality of the telescopic pipe 50.

In some embodiments of the present invention, the distance from the end of the push rod 120 close to the protection switch 40 is less than the distance from the end of the screw rod 30 close to the bearing 100. When the screw rod 30 moves to approach the protection switch 40, the screw rod 30 pushes the push rod 120 to move towards the protection switch 40, so that the push rod 120 can be abutted against the protection switch 40 and can trigger the protection switch 40, thereby protecting the cleaning device.

Additionally, in some embodiments of the present invention, the second connecting pipe 502 is close to one end of the protection switch 40 and one end of the flow guiding pipe 190, and the other end of the flow guiding pipe 190 is used for communicating with the sewage suction pump, so as to suck sewage through the sewage suction pump. Specifically, when the first connection pipe 501 is inserted into the sewage, the sewage is pumped out through the extension pipe 50 and the draft tube 190 by starting the sewage suction pump.

Some embodiments of the present invention further provide a cleaning base station, including a base station body and the cleaning device of any of the above embodiments, and the cleaning device is disposed in the base station body.

Specifically, the telescopic tube 50 of the cleaning device extends and retracts in a direction perpendicular to the horizontal plane.

Wherein, clean basic station body includes soil pick-up pump, first liquid reserve tank and second liquid reserve tank, first liquid reserve tank is used for saving clear liquid, and the second liquid reserve tank is used for saving sewage.

Meanwhile, the second connection pipe 502 is communicated with the second liquid storage tank through the guide pipe 190, so that the sewage pumped through the extension pipe 50 can flow into the second liquid storage tank through the guide pipe 190.

By communicating the sewage suction pump with the flow guide pipe 190, sewage suction power is provided to the cleaning device through the sewage suction pump, so that the cleaning device can suck sewage into the second liquid storage tank through the telescopic pipe 50 and the flow guide pipe 190.

In all examples shown and described herein, any particular value should be construed as exemplary only and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. A cleaning device is characterized by comprising a shell, a driving device, a screw rod, a protection switch, a first connecting pipe and a second connecting pipe;

an output shaft of the driving device is in transmission connection with the screw rod through a gear box;

the screw rod and the second connecting pipe are respectively arranged in the shell, and one end of the first connecting pipe is slidably sleeved on the second connecting pipe to form a telescopic pipe;

a first limit switch and a second limit switch which are spaced are arranged inside the shell, and the first limit switch and the second limit switch are respectively and electrically connected to the driving device so as to limit the first connecting pipe;

the screw rod is sleeved with a screw rod nut, and the first connecting pipe is connected with the screw rod nut;

the protective switch is arranged on the gear box and electrically connected to the driving device, and a gap is formed between the screw rod and the protective switch;

when the first connecting pipe drives the screw rod to move towards the protection switch under the action of external force and triggers the protection switch, the driving device stops running or controls the screw rod to drive the first connecting pipe to move towards the protection switch.

2. The cleaning device as claimed in claim 1, wherein a bearing and a first return spring are sleeved on one end of the screw rod close to the protection switch, one end of the first return spring is abutted against the bearing, and the other end of the first return spring is abutted against the external thread of the screw rod.

3. The cleaning device as claimed in claim 2, wherein a push rod is provided at one end of the screw rod close to the protection switch, one ends of the screw rod and the push rod are respectively inserted into a limit gear in the gear box, a gap is provided between the push rod and the screw rod, and a gap is provided between the other end of the push rod and the protection switch.

4. The cleaning device as claimed in claim 3, wherein a limit ring is arranged on the circumference of the push rod, and a receiving platform is arranged on the inner wall of the limit gear, so as to form limit with the limit ring through the receiving platform;

the push rod is sleeved with a second reset spring, the second reset spring is located between the limit gear and the push rod, one end of the second reset spring is abutted to the limit ring, and the other end of the second reset spring is in contact with the protection switch.

5. The cleaning device of claim 3, wherein a distance from an end of the push rod near the protection switch to the protection switch is smaller than a distance from an end of the external thread in the lead screw near the bearing to the bearing.

6. The cleaning device of claim 3, wherein the lead screw and the push rod are coaxially arranged, and the protection switch is located on an extension line of an axis of the lead screw.

7. The cleaning device of claim 1, wherein a side of the first connecting tube adjacent to the first limit switch and the second limit switch is provided with a protrusion capable of activating the first limit switch and the second limit switch.

8. The cleaning device as claimed in claim 1, wherein a sealing rubber sleeve is arranged between the first connecting pipe and the second connecting pipe, the sealing rubber sleeve is arranged on the inner wall of the first connecting pipe, and the sealing rubber sleeve is abutted against the outer wall of the second connecting pipe.

9. The cleaning device as claimed in claim 1, wherein the end of the second connecting pipe away from the driving device is provided with a sealing ring, the sealing ring is arranged on the outer wall of the second connecting pipe, and the sealing ring is abutted against the inner wall of the first connecting pipe.

10. A cleaning base station comprising a base station body and the cleaning device of any one of claims 1 to 9;

the cleaning device is arranged in the base station body;

the base station body comprises a sewage suction pump, a first liquid storage tank and a second liquid storage tank, and the second connecting pipe is communicated with the second liquid storage tank through a guide pipe;

the sewage suction pump is communicated with the guide pipe.

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