Floor scrubber with motor protection structure

Abstract

The invention discloses a scrubber with a motor protection structure, and relates to the technical field of motor protection, the scrubber comprises a protection frame and further comprises a protection device, the inner wall of the protection frame is slidably provided with a protection plate, the inner wall of the protection frame is fixedly provided with a U-shaped frame, the inner wall of the protection frame is fixedly provided with a push rod, and the push rod is fixedly provided with a motor. The protection device comprises a stabilizing plate, a stabilizing rod, a limiting plate, a limiting groove, a connecting plate, an elastic telescopic rod, a U-shaped plate and a butt joint hole, the pushing plate moves upwards under the elastic force effect of a first spring, and the pushing plate moves upwards to drive the motor body to move upwards so that the motor body can be popped out; and the elastic telescopic rod prevents the motor body from loosening caused by human mistaken touch, can protect the motor body and improve the stability of the motor body, so that the motor body operates under normal working conditions, and the long-term reliability of the motor body is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of motor protection, and in particular to a floor scrubber with a motor protection structure. Background Art

[0002] A floor scrubber with a motor protection structure usually consists of a protective device, a motor body, a limit device and other parts.

[0003] The patent with patent announcement number CN219717999U relates to a motor protection structure and a floor scrubber. The motor protection structure includes a motor cover and a motor housing. The top of the motor housing is provided with an opening, and the motor cover is closed on the opening; the side wall of the motor housing is provided with a clip, and the motor cover is provided with a clip-on structure, and the clip-on structure is provided with a through hole, and the clip is clipped with the clip-on structure through the through hole; the motor cover is used to protect the motor and the Hall plate in the motor housing, and the motor and the Hall plate are provided in the motor housing. The motor cover is aligned with the opening of the motor housing, and the clip is passed through the through hole of the clip-on structure so that the clip is clipped with the clip-on structure, thereby waterproofing the entire motor and the Hall plate.

[0004] In the above patent, the motor cover is aligned with the opening of the motor housing and the clip is passed through the through hole of the clip structure so that the clip is clipped with the clip structure, thereby achieving a waterproof effect on the entire motor and the Hall plate. However, it is difficult to prevent the motor body from loosening due to accidental human touch. The loose motor body will cause abnormal wear or vibration of the internal components of the motor, thereby causing the drive system of the floor scrubber to lose its transmission function due to the loose motor body, thereby causing damage to the motor body and making the floor scrubber unable to work normally. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a floor scrubber with a motor protection structure, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A floor scrubber with a motor protection structure, comprising a protection frame and a protection device, wherein a protection plate is slidably installed on the inner wall of the protection frame, a U-shaped frame is fixedly installed on the inner wall of the protection frame, a push rod is fixedly installed on the inner wall of the protection frame, a push plate is slidably installed on the circumferential surface of the push rod, a No. 1 spring is arranged between the push plate and the bottom of the inner wall of the protection frame, and a motor body is arranged on the top of the push plate, wherein the protection device comprises a stabilizing plate, a stabilizing rod, a limiting plate, a limiting groove, a connecting plate, an elastic telescopic rod, a U-shaped plate and a docking hole, the push plate moves upward under the elastic force of the No. 1 spring, and the upward movement of the push plate drives the motor body to move upward to eject the motor body, the stabilizing plate is fixedly installed on the left side of the protection frame, the stabilizing rod slides through the upper and lower walls of the stabilizing plate, the top of the stabilizing rod is fixedly installed with a limiting plate, the limiting groove is arranged at the top of the protection plate, the connecting plate is fixedly installed at the bottom of the stabilizing rod, the elastic telescopic rod is fixedly installed on the left side of the protection frame, the U-shaped plate is fixedly installed on the top of the protection plate, and the docking hole is arranged on the front side of the protection frame.

[0007] According to the above technical solution, the limit plate contacts the inner wall of the limit groove, the U-shaped plate contacts the top of the protection frame, and a No. 2 spring is arranged between the connecting plate and the stabilizing plate, and the No. 2 spring can drive the connecting plate to reset.

[0008] According to the above technical solution, the free end of the elastic telescopic rod contacts the top of the connecting plate, the output end of the motor body passes through the bottom of the inner wall of the protective frame, the motor body contacts the front side of the U-shaped frame, and the protective plate is manually pushed to move to the left and reset. The protective plate moves to the left and resets to restore the limit on the motor body.

[0009] According to the above technical scheme, the inner wall of the protection frame is provided with an anti-sway device to prevent the motor body from shaking, and the inner wall of the protection frame is provided with a separation device. The anti-sway device includes a load-bearing rod, a load-bearing plate, a clamping plate, a wire clamping plate, a wiring hole, a wiring board and an arc groove. The clamping plate moves toward the direction close to the U-shaped frame to contact the motor body and provide auxiliary support for the motor body. The load-bearing rod is fixedly installed on the inner wall of the protection frame, the load-bearing plate is slidably installed on the circumferential surface of the load-bearing rod, the clamping plate is fixedly installed on the right side of the load-bearing plate, the wire clamping plate is slidably installed on the inner wall of the protection frame, the wiring hole is opened on the front side of the wire clamping plate, the wiring board is fixedly installed on the inner wall of the protection frame, and the arc groove is opened on the front side of the wiring board.

[0010] According to the above technical solution, the wire clamping plate is in contact with the arc groove, the top of the wire clamping plate is set as an inclined surface, a No. 3 spring is arranged between the load-bearing plate and the protective frame, the No. 3 spring can drive the load-bearing plate to reset, and a reset spring is arranged between the wire clamping plate and the protective frame.

[0011] According to the above technical solution, the front side of the clamping plate is set as an inclined surface, the front side of the clamping plate contacts the U-shaped plate, the clamping plate contacts the terminal board, and a rack is fixedly installed on the front side of the clamping plate.

[0012] According to the above technical solution, the separation device includes a separation plate, a rotating rod, a gear, a linkage rod, a scraper rod, an arc block and a separation hole. The scraper rod rotates due to the reaction force of squeezing the arc block. The scraper rod rotates to change the scraping angle of the separation plate. The separation hole is opened on the front side of the protective frame. The separation plate is fixedly installed on the inner wall of the separation hole. The rotating rod rotates through the front and rear walls of the separation plate. The gear is fixedly installed on the circumferential surface of the rotating rod. The linkage rod is fixedly installed on the circumferential surface of the rotating rod. The scraper rod is rotatably installed on the front side of the linkage rod. The arc block is fixedly installed on the rear side of the separation plate.

[0013] According to the above technical solution, a clockwork spring is arranged between the linkage rod and the scraper rod, one end of the clockwork spring is arranged on the front side of the linkage rod, and the other end is arranged on the rear side of the scraper rod. The scraper rod can be driven to reset by the clockwork spring, and a volute spring is arranged between the separation plate and the rotating rod. The rotating rod can be driven to reset by the volute spring. The gear is meshed with the rack, and the elastic coefficient of the reset spring is greater than that of the clockwork spring and the volute spring.

[0014] The present invention provides a floor scrubber with a motor protection structure, which has the following beneficial effects: (1) The floor scrubber with a motor protection structure moves away from the stabilizing rod through the elastic telescopic rod to break away from the contact with the connecting plate. The elastic telescopic rod prevents the motor body from loosening due to accidental human touch, thereby protecting the motor body and improving the stability of the motor body, so that it can operate under normal working conditions, thereby enhancing the long-term reliability of the motor body. The push plate moves upward under the elastic force of the No. 1 spring, and the push plate moves upward to drive the motor body to move upward and eject the motor body. The design that is easy to disassemble allows personnel to deal with the problem in time when the motor body fails, avoiding the motor body from being in a dangerous state for a long time, thereby extending the overall service life of the motor body and the floor scrubber.

[0015] (2) The floor scrubber with a motor protection structure moves the clamping plate toward the U-shaped frame to contact the motor body and provide auxiliary support to the motor body. The clamping plate contacts the motor body and provides auxiliary support, which can effectively enhance the stability of the motor body during operation, thereby reducing the shaking of the motor caused by vibration or external impact. The wire clamping plate moves downward to disengage the contact with the arc groove and release the clamping limit on the connecting wire. By releasing the clamping limit on the connecting wire, the connecting wire is prevented from being pulled or damaged when the motor body moves, thereby reducing the risk of connecting wire breakage.

[0016] (3) The floor scrubber with a motor protection structure drives the linkage rod to rotate by rotating the rotating rod, and the linkage rod drives the scraper rod to rotate. The scraper rod rotates to scrape off the blockage accumulated on the rear side of the separation plate. The scraper rod rotates to remove dust or dirt, which can maintain ventilation and air flow outside the motor body, thereby improving the heat dissipation efficiency of the motor body and ensuring that the motor body can work stably for a long time under high load. The scraper rod rotates due to the reaction force of the extruded arc block, and the scraper rod rotates to change the scraping angle of the separation plate. The change in the angle of the scraper rod can improve the effect of cleaning dust or dirt, further reducing damage or protection shutdown caused by overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the stabilizing rod and the limiting plate of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A; Figure 4 This is a schematic diagram of the internal structure of the protection frame of the present invention; Figure 5 This is a schematic diagram of the position structure of the load-bearing plate and the clamping plate of the present invention; Figure 6 It is a schematic diagram of the position structure of the load-bearing rod and the load-bearing plate of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of part B.

[0018] In the figure: 1. protection frame; 2. protection plate; 3. U-shaped frame; 4. push rod; 5. push plate; 6. motor body; 7. stabilizing plate; 8. stabilizing rod; 9. limit plate; 10. limit groove; 11. connecting plate; 12. elastic telescopic rod; 13. U-shaped plate; 14. docking hole; 15. separation hole; 161. load-bearing rod; 162. load-bearing plate; 163. clamping plate; 164. wire clamping plate; 165. wiring hole; 166. wiring board; 167. arc groove; 168. rack; 171. separation plate; 172. rotating rod; 173. gear; 174. linkage rod; 175. scraper rod; 176. arc block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5 , one embodiment of the present invention is: a floor scrubber with a motor protection structure, comprising a protection frame 1, and also comprising a protection device, wherein a protection plate 2 is slidably installed on the inner wall of the protection frame 1, a U-shaped frame 3 is fixedly installed on the inner wall of the protection frame 1, a push rod 4 is fixedly installed on the inner wall of the protection frame 1, a push plate 5 is slidably installed on the circumferential surface of the push rod 4, a No. 1 spring is arranged between the push plate 5 and the bottom of the inner wall of the protection frame 1, and a motor body 6 is arranged on the top of the push plate 5, wherein the protection device comprises a stabilizing plate 7, a stabilizing rod 8, a limiting plate 9, a limiting groove 10, a connecting plate 11, an elastic telescopic rod 12, a U-shaped plate 13 and a docking hole 14, a stabilizing plate 7 is fixedly installed on the left side of the protection frame 1, the stabilizing rod 8 slides through the upper and lower walls of the stabilizing plate 7, the top of the stabilizing rod 8 is fixedly installed with a limit plate 9, the limit groove 10 is opened at the top of the protection plate 2, the connecting plate 11 is fixedly installed at the bottom of the stabilizing rod 8, the elastic telescopic rod 12 is fixedly installed on the left side of the protection frame 1, the U-shaped plate 13 is fixedly installed on the top of the protection plate 2, and the docking hole 14 is opened on the front side of the protection frame 1. The elastic telescopic rod 12 can prevent the motor body 6 from loosening due to accidental human touch, so as to protect the motor body 6 and improve the stability of the motor body 6, so that it can run under normal working conditions, thereby enhancing the long-term reliability of the motor body 6.

[0021] The limiting plate 9 contacts the inner wall of the limiting groove 10, the U-shaped plate 13 contacts the top of the protection frame 1, and a second spring is arranged between the connecting plate 11 and the stabilizing plate 7, and the second spring can drive the connecting plate 11 to reset.

[0022] The free end of the elastic telescopic rod 12 contacts the top of the connecting plate 11, the output end of the motor body 6 passes through the bottom of the inner wall of the protection frame 1, the motor body 6 contacts the front side of the U-shaped frame 3, and the protection plate 2 is manually pushed to move to the left and reset. The protection plate 2 moves to the left and resets to restore the limit on the motor body 6. The design that is easy to disassemble allows personnel to deal with problems in time when the motor body 6 fails, avoiding the motor body 6 from being in a dangerous state for a long time, thereby extending the overall service life of the motor body 6 and the floor scrubber.

[0023] When this embodiment is working: when it is necessary to adjust and inspect the motor body 6 inside the protective frame 1, manually push the free end of the elastic telescopic rod 12 to move in the direction away from the stabilizing rod 8, and the elastic telescopic rod 12 moves in the direction away from the stabilizing rod 8 to break away from the contact with the connecting plate 11. After the connecting plate 11 breaks away from the contact with the free end of the elastic telescopic rod 12, manually pull the limit plate 9 to move upward. The limit plate 9 moves upward to drive the stabilizing rod 8 to move upward. The stabilizing rod 8 moves upward to drive the connecting plate 11 to move upward. The connecting plate 11 moves upward to squeeze the No. 2 spring. The No. 2 spring is squeezed by the connecting plate 11 to generate shape and store force. At the same time, the limit plate 9 moves upward to break away from the contact with the protective plate 2 and release the limit on the protective plate 2. After the limit of the protective plate 2 is released, manually push the protective plate 2 to move to the right. , the protection plate 2 moves to the right to break away from the contact with the motor body 6 and releases the shielding on the top of the protection frame 1. After the motor body 6 breaks away from the contact with the protection plate 2, the pushing plate 5 moves upward under the elastic force of the No. 1 spring. The pushing plate 5 moves upward to drive the motor body 6 to move upward and pop out the motor body 6. After the adjustment and maintenance of the motor body 6 is completed, the motor body 6 is placed on the top of the pushing plate 5. After the motor body 6 is placed on the top of the pushing plate 5, the motor body 6 is manually pressed to move downward. The motor body 6 moves downward to drive the pushing plate 5 to move downward. The pushing plate 5 moves downward to squeeze the No. 1 spring. The No. 1 spring is squeezed by the pushing plate 5 to produce deformation and accumulate force. At the same time, the protection plate 2 is manually pushed to move to the left to reset. The protection plate 2 moves to the left to reset and restores the limit on the motor body 6.

[0024] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, the inner wall of the protection frame 1 is provided with an anti-sway device for preventing the motor body 6 from shaking, and the inner wall of the protection frame 1 is provided with a separation device, the anti-sway device includes a load-bearing rod 161, a load-bearing plate 162, a clamping plate 163, a wire clamping plate 164, a wiring hole 165, a terminal plate 166 and an arc groove 167, the load-bearing rod 161 is fixedly mounted on the inner wall of the protection frame 1, the load-bearing plate 162 is slidably mounted on the circumferential surface of the load-bearing rod 161, the clamping plate 163 is fixedly mounted on the right side of the load-bearing plate 162, the wire clamping plate 164 is slidably mounted on the inner wall of the protection frame 1, the wiring hole 165 is opened on the front side of the wire clamping plate 164, the terminal plate 166 is fixedly mounted on the inner wall of the protection frame 1, and the arc groove 167 is opened on the front side of the terminal plate 166. The clamping plate 163 contacts with the motor body 6 and provides auxiliary support, which can effectively enhance the stability of the motor body 6 during operation.

[0025] The wire clamping plate 164 contacts the arc groove 167, and the top of the wire clamping plate 164 is set as an inclined surface. A No. 3 spring is arranged between the load-bearing plate 162 and the protective frame 1, and the No. 3 spring can drive the load-bearing plate 162 to reset. A reset spring is arranged between the wire clamping plate 164 and the protective frame 1, and one end of the reset spring is arranged on the front side of the wire clamping plate 164, and the other end is arranged on the inner wall of the protective frame 1, and the wire clamping plate 164 can be driven to reset by the reset spring.

[0026] The front side of the clamping plate 163 is set as an inclined surface, the front side of the clamping plate 163 contacts the U-shaped plate 13, the wire clamping plate 164 contacts the terminal board 166, and a rack 168 is fixedly installed on the front side of the wire clamping plate 164. By releasing the clamping limit of the connecting wire, the connecting wire is prevented from being pulled or damaged when the motor body 6 moves, thereby reducing the risk of damage to the connecting wire.

[0027] The separation device includes a separation plate 171, a rotating rod 172, a gear 173, a linkage rod 174, a scraper rod 175, an arc block 176 and a separation hole 15. The separation hole 15 is opened on the front side of the protective frame 1, the separation plate 171 is fixedly installed on the inner wall of the separation hole 15, the rotating rod 172 rotates to penetrate the front and rear walls of the separation plate 171, the gear 173 is fixedly installed on the circumferential surface of the rotating rod 172, the linkage rod 174 is fixedly installed on the circumferential surface of the rotating rod 172, the scraper rod 175 is rotatably installed on the front side of the linkage rod 174, and the arc block 176 is fixedly installed on the rear side of the separation plate 171. The scraper rod 175 rotates to remove dust or dirt, so that ventilation and air flow outside the motor body 6 can be maintained, thereby improving the heat dissipation efficiency of the motor body 6.

[0028] A clockwork spring is arranged between the linkage rod 174 and the scraper rod 175, one end of the clockwork spring is arranged on the front side of the linkage rod 174, and the other end is arranged on the rear side of the scraper rod 175. The clockwork spring can drive the scraper rod 175 to reset. A volute spring is arranged between the separation plate 171 and the rotating rod 172, and the volute spring can drive the rotating rod 172 to reset. The gear 173 is meshed with the rack 168. The elastic coefficient of the reset spring is greater than that of the clockwork spring and the volute spring. The angle change of the scraper rod 175 can improve the effect of cleaning dust or dirt by itself, further reducing damage or protective shutdown caused by overheating.

[0029] When the present embodiment is working: the protection plate 2 is manually pushed to move to the right side, driving the U-shaped plate 13 to move, and the U-shaped plate 13 moves out of contact with the clamping plate 163. After the clamping plate 163 is out of contact with the U-shaped plate 13, the clamping plate 163 moves in the direction away from the U-shaped frame 3 under the elastic force of the No. 3 spring, and the clamping plate 163 moves in the direction away from the U-shaped frame 3 to break away from the contact with the motor body 6 and release the support for the motor body 6. When the protection plate 2 is pushed to move to the left side and reset, the protection plate 2 moves to the left side and resets, driving the U-shaped plate 13 to move, and the U-shaped plate 13 moves to contact with the inclined surface of the clamping plate 163 and squeezes the clamping plate 163. The clamping plate 163 is squeezed by the U-shaped plate 13 and moves in the direction close to the U-shaped frame 3. The clamping plate 163 moves in the direction close to the U-shaped frame 3 to press the No. 3 spring The spring is pulled, and the No. 3 spring is deformed and stored force by the pulling of the clamping plate 163. At the same time, the clamping plate 163 moves toward the direction close to the U-shaped frame 3, contacts the motor body 6 and provides auxiliary support for the motor body 6. When the clamping plate 163 moves away from the U-shaped frame 3, the clamping plate 163 moves away from the U-shaped frame 3 to drive the load-bearing plate 162 to move. The load-bearing plate 162 moves and contacts the inclined surface of the wire clamping plate 164 and squeezes the wire clamping plate 164. The wire clamping plate 164 moves downward due to the squeezing of the load-bearing plate 162. The wire clamping plate 164 moves downward to squeeze the reset spring. The reset spring is deformed and stored force by the squeezing of the wire clamping plate 164. At the same time, the wire clamping plate 164 moves downward, causing the wire clamping plate 164 to break away from the contact with the arc groove 167 and release the clamping limit of the connecting line.

[0030] The clamping plate 164 moves downward to drive the rack 168 to move downward, and the rack 168 moves downward to squeeze the gear 173. The gear 173 is squeezed by the rack 168 to rotate, and the rotation of the gear 173 drives the rotating rod 172 to rotate. The rotating rod 172 rotates to squeeze the volute spring. The volute spring is squeezed by the rotating rod 172 to deform and store force. At the same time, the rotation of the rotating rod 172 drives the linkage rod 174 to rotate, and the rotation of the linkage rod 174 drives the scraper rod 175 The scraper rod 175 rotates to scrape off the blockage accumulated on the rear side of the separation plate 171. At the same time, the scraper rod 175 rotates to contact the arc block 176 and squeeze the arc block 176. The scraper rod 175 rotates due to the reaction force of squeezing the arc block 176. The scraper rod 175 rotates to change the scraping angle of the separation plate 171. After the scraper rod 175 continues to rotate to break away from the contact with the arc block 176, the scraper rod 175 rotates and resets under the elastic force of the clockwork spring.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floor scrubber with a motor protection structure, comprising a protection frame (1), characterized in that: It also includes protective gear; The inner wall of the protection frame (1) is slidably mounted with a protection plate (2), the inner wall of the protection frame (1) is fixedly mounted with a U-shaped frame (3), the inner wall of the protection frame (1) is fixedly mounted with a push rod (4), the circumferential surface of the push rod (4) is slidably mounted with a push plate (5), a No. 1 spring is arranged between the push plate (5) and the bottom of the inner wall of the protection frame (1), and a motor body (6) is arranged on the top of the push plate (5); The protective device comprises a stabilizing plate (7), a stabilizing rod (8), a limiting groove (10), a connecting plate (11), an elastic telescopic rod (12), a U-shaped plate (13) and a docking hole (14); the stabilizing plate (7) is fixedly mounted on the left side of the protective frame (1); the stabilizing rod (8) slides through the upper and lower walls of the stabilizing plate (7); a limiting plate (9) is fixedly mounted on the top of the stabilizing rod (8); the limiting groove (10) is provided at the top of the protective plate (2); the connecting plate (11) is fixedly mounted on the bottom of the stabilizing rod (8); the elastic telescopic rod (12) is fixedly mounted on the left side of the protective frame (1); the U-shaped plate (13) is fixedly mounted on the top of the protective plate (2); and the docking hole (14) is provided at the front side of the protective frame (1); Wherein, an anti-sway device for preventing the motor body (6) from shaking is arranged on the inner wall of the protection frame (1), and a separation device is arranged on the inner wall of the protection frame (1).

2. A floor scrubber with a motor protection structure according to claim 1, characterized in that: The limiting plate (9) contacts the inner wall of the limiting groove (10), the U-shaped plate (13) contacts the top of the protection frame (1), and a No. 2 spring is provided between the connecting plate (11) and the stabilizing plate (7).

3. A floor scrubber with a motor protection structure according to claim 2, characterized in that: The free end of the elastic telescopic rod (12) contacts the top of the connecting plate (11), the output end of the motor body (6) passes through the bottom of the inner wall of the protection frame (1), and the motor body (6) contacts the front side of the U-shaped frame (3).

4. A floor scrubber with a motor protection structure according to claim 3, characterized in that: The anti-sway device comprises a load-bearing rod (161), a load-bearing plate (162), a clamping plate (163), a wire clamping plate (164), a wiring hole (165), a wiring board (166) and an arc surface groove (167); the load-bearing rod (161) is fixedly mounted on the inner wall of the protection frame (1); the load-bearing plate (162) is slidably mounted on the circumferential surface of the load-bearing rod (161); the clamping plate (163) is fixedly mounted on the right side of the load-bearing plate (162); the wire clamping plate (164) is slidably mounted on the inner wall of the protection frame (1); the wiring hole (165) is provided on the front side of the wire clamping plate (164); the wiring board (166) is fixedly mounted on the inner wall of the protection frame (1); and the arc surface groove (167) is provided on the front side of the wiring board (166).

5. A floor scrubber with a motor protection structure according to claim 4, characterized in that: The clamping plate (164) is in contact with the arc groove (167), the top of the clamping plate (164) is arranged as an inclined surface, a No. 3 spring is arranged between the load-bearing plate (162) and the protection frame (1), and a return spring is arranged between the clamping plate (164) and the protection frame (1).

6. A floor scrubber with a motor protection structure according to claim 5, characterized in that: The front side of the clamping plate (163) is arranged as an inclined surface, the front side of the clamping plate (163) contacts the U-shaped plate (13), the wire clamping plate (164) contacts the wiring board (166), and a rack (168) is fixedly mounted on the front side of the wire clamping plate (164).

7. A floor scrubber with a motor protection structure according to claim 6, characterized in that: The separation device comprises a separation plate (171), a rotating rod (172), a gear (173), a linkage rod (174), a scraper rod (175), an arc surface block (176) and a separation hole (15); the separation hole (15) is formed on the front side of the protection frame (1); the separation plate (171) is fixedly mounted on the inner wall of the separation hole (15); the rotating rod (172) rotates through the front and rear walls of the separation plate (171); the gear (173) is fixedly mounted on the circumferential surface of the rotating rod (172); the linkage rod (174) is fixedly mounted on the circumferential surface of the rotating rod (172); the scraper rod (175) is rotatably mounted on the front side of the linkage rod (174); and the arc surface block (176) is fixedly mounted on the rear side of the separation plate (171).

8. A floor scrubber with a motor protection structure according to claim 7, characterized in that: A spring is provided between the linkage rod (174) and the scraper rod (175), a spiral spring is provided between the separation plate (171) and the rotating rod (172), and the gear (173) is meshed with the rack (168).

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