Waterproof device capable of prolonging service life of motor

Abstract

The invention relates to the technical field of motor waterproofing, and discloses a waterproof device capable of prolonging the service life of a motor, which comprises a protection box, a base fixedly connected to the bottom of the protection box, a motor main body arranged in the protection box, a rotating shaft fixedly connected to the right side of the motor main body, and a mounting mechanism arranged at the bottom of the rotating shaft in the protection box. And a positioning mechanism is arranged in the mounting mechanism. According to the waterproof device capable of prolonging the service life of the motor, external water cannot enter the protection box from the connecting position of the right side fixing arc frame and the rotating shaft through the arranged mounting mechanism, and meanwhile the fixing arc frames on the upper side and the lower side are connected to the outer ring of the rotating shaft in a sleeving mode through arc-shaped rubber strips arranged on the inner sides to seal the rotating shaft; the rotation of the rotating shaft is not affected, so that the motor is not in direct contact with external moisture, the short circuit of the motor when encountering water is avoided, the corrosion caused by the contact between the motor shell and water vapor is also prevented, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of motor waterproofing, and in particular to a waterproofing device capable of increasing the service life of a motor. Background Art

[0002] At present, motors are pursuing high adaptability to the environment, requiring them to work reliably in rain, splashing water and other environments. If water enters the motor, the insulation performance of the motor will be reduced, the electrical strength will be weakened, and the motor will short-circuit and fail to work. The motor has electrical connection wires leading out. In a water-containing operating environment, the place where the electrical connection wires are led out is the key point of protection and needs to be reliably sealed. Otherwise, external water will enter the motor along the fitting surface between the box body, the end cover and the body, causing damage to the motor.

[0003] According to the "A Motor Waterproof Device (Publication Number: CN 210468966 U; Application Number: 201920935521.4)" published on the patent website, the above application optimizes the problem that "most motors except certain waterproof motors need waterproof protection, so when used on rainy days or in places with large amounts of water, a motor waterproof device is required. However, the motor waterproof devices currently on the market have shortcomings such as incomplete waterproofing, difficulty in waterproofing the transmission shaft, and inability to dissipate heat." However, the waterproof device in the above application only seals the rotating shaft of the motor, but the motor has an electrical connection wire led out to the outside, and the display of the sealing solution at the connection point of the wiring in the above application needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a waterproof device which can increase the service life of a motor, so as to solve the problems mentioned in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a waterproof device that can increase the service life of a motor, comprising a protective box, a base fixedly connected to the bottom of the protective box, a motor body arranged in the protective box, a rotating shaft fixedly connected to the right side of the motor body, an installation mechanism arranged in the protective box at the bottom of the rotating shaft, a positioning mechanism arranged in the installation mechanism, and a sealing mechanism arranged on the left side of the protective box.

[0006] The mounting mechanism comprises a fixed component, a sliding component and a first sealing component. The fixed component is arranged at the bottom of the motor body, the sliding component is arranged in the fixed component, and the first sealing component is arranged on the right side of the sliding component.

[0007] The positioning mechanism comprises a positioning component and a moving component. The positioning component is arranged on the front side of the sliding component, and the moving component is arranged on the right side of the positioning component.

[0008] The sealing mechanism comprises a mounting assembly and a second sealing assembly, wherein the mounting assembly is arranged on the left side of the protection box, and the second sealing assembly is arranged on the left side of the mounting assembly.

[0009] According to the above technical solution, the fixing assembly includes a fixing frame, which is fixedly connected to the bottom of the motor body, a mounting card is fixedly connected to the bottom of the fixing frame, a sleeve is sleeved on the outside of the mounting card, and the sleeve is fixedly connected to the bottom of the protective box, a closing plate is sleeved on the right side of the protective box, a positioning card is fixedly connected to the left bottom of the closing plate corresponding to the sleeve position, the positioning card is sleeved in the sleeve, and the left side of the positioning card is in contact with the right side of the mounting card.

[0010] According to the above technical solution, the sliding assembly includes a fixed frame, which is fixedly connected to the left side of the closed plate, and fixed plates are fixedly connected to the upper and lower sides of the fixed frame. A slide plate is slidably connected to the fixed plate, and a movable slide rod is fixedly connected to the right side of the slide plate. A first movable slide groove is opened on the right side of the fixed plate corresponding to the position of the movable slide rod, and a grip rod is fixedly connected to the right side of the movable slide rod.

[0011] According to the above technical solution, the first sealing component includes a connecting arc plate, which is fixedly connected to the right side of the slide board near the direction of the rotating shaft, and the right side of the connecting arc plate is fixedly connected to a fixed arc frame, and the inner sides of the connecting arc plate and the fixed arc frame are fitted with the outer ring of the rotating shaft, and an arc-shaped rubber strip is fixedly connected inside the fixed arc frame, and the inner side of the arc-shaped rubber strip is fitted with the outer ring of the rotating shaft.

[0012] According to the above technical solution, the positioning assembly includes a fixed box, which is fixedly connected to the front side of the fixed frame, a slide tube is slidably connected inside the fixed box, a compression spring is fixedly connected inside the slide tube, the compression spring is fixedly connected to the front side of the fixed box, a positioning sleeve is fixedly connected to the rear side of the slide tube, and the positioning sleeve passes backward through the fixed frame and is sleeved on the front end of the grip rod.

[0013] According to the above technical solution, the moving component includes a limiting slide rod, which is fixedly connected to the right side of the slide cylinder, and the fixed box and the closing plate are provided with a second moving slide groove corresponding to the position of the limiting slide rod, and a connecting plate is fixedly connected to the right side of the limiting slide rod.

[0014] According to the above technical solution, the installation assembly includes a connection wire, which is fixedly connected to the left side of the motor body. A hole is opened on the left side of the protective box corresponding to the connection wire position. A threaded pipe is fixedly connected to the left side of the protective box corresponding to the connection wire position. The outer ring of the threaded pipe is threadedly connected to a threaded cylinder.

[0015] According to the above technical solution, the second sealing assembly includes a threaded sleeve, which is fixedly connected to the left side of the threaded barrel, a limiting ring is fixedly connected to the left side of the threaded sleeve, a sealing rubber ring is arranged on the left side of the inner ring of the threaded sleeve, sliders are fixedly connected to the front and rear sides of the sealing rubber ring, the sliders are slidably connected to the front and rear sides of the threaded sleeve, and the outer ring of the threaded sleeve is threadedly connected to the threaded sleeve.

[0016] Compared with the prior art, the present invention provides a waterproof device that can increase the service life of the motor, and has the following beneficial effects: 1. The waterproof device that can increase the service life of the motor prevents external moisture from entering the protective box at the connection between the right fixed arc frame and the rotating shaft through the set installation mechanism. At the same time, the fixed arc frames on the upper and lower sides are sleeved on the outer ring of the rotating shaft through the arc-shaped rubber strips set on the inner side to seal the rotating shaft, which will not affect the rotation of the rotating shaft, so that the motor will not be in direct contact with external moisture, avoiding the short circuit of the motor due to water, and preventing the corrosion of the motor casing due to contact with water vapor, thereby increasing the service life of the motor.

[0017] 2. The waterproof device that can increase the service life of the motor has a positioning mechanism, and the positioning sleeve passes through the fixed frame backward and is sleeved on the front ends of the upper and lower grip rods to complete the positioning of the grip rods, so that the fixed arc frames and arc rubber strips on the upper and lower sides cannot move by themselves after installation, so that after the motor body is installed, the fixed arc frames and arc rubber strips on the upper and lower sides can maintain the sealing operation of the rotating shaft, thereby increasing the sealing stability of the device when in use.

[0018] 3. The waterproof device that can increase the service life of the motor has a sealing mechanism. The staff only needs to rotate the threaded sleeve after the threaded barrel is installed to move the threaded sleeve to the left so that the sealing rubber ring sleeved on the inner circle of the threaded sleeve can be squeezed inward to completely fill the outer circle position of the connecting wire to complete the sealing work of the connecting wire. The operation is simple and convenient for the staff to use. It avoids the short circuit of the motor caused by water and also prevents the corrosion of the motor casing caused by contact with water vapor, thereby increasing the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front schematic diagram of the present invention; Figure 2 is a front cross-sectional view of the present invention; Figure 3 It is a front cross-sectional view of a part of the structure of the present invention; Figure 4 It is a schematic diagram of the structure of the fixed mechanism part; Figure 5 It is a cross-sectional view of the fixed structure part; Figure 6 It is a schematic diagram of the structure of the sliding component; Figure 7 It is a schematic diagram of the partial structure of the positioning mechanism; Figure 8 It is a schematic diagram of the partial structure of the sealing mechanism; Fig. 9 It is a cross-sectional view of the sealing structure.

[0020] In the figure: 1. Installation mechanism; 11. Fixing assembly; 1101. Fixing frame; 1102. Installing card plate; 1103. Sleeve frame; 1104. Closing plate; 1105. Positioning card plate; 12. Sliding assembly; 1201. Fixing frame; 1202. Fixing plate; 1203. Slide plate; 1204. Moving slide bar; 1205. First moving slide groove; 1206. Grip bar; 13. First sealing assembly; 1301. Connecting arc plate; 1302. Fixing arc frame; 1303. Arc rubber strip; 2. Positioning mechanism; 21. Positioning assembly; 2101. Fixing box ; 2102, slide; 2103, compression spring; 2104, positioning sleeve; 22, moving assembly; 2201, limiting slide rod; 2202, second moving slide groove; 2203, connecting plate; 3, sealing mechanism; 31, installation assembly; 3101, connecting wire; 3102, threaded pipe; 3103, threaded cylinder; 32, second sealing assembly; 3201, threaded sleeve; 3202, limiting ring; 3203, sealing rubber ring; 3204, slider; 3205, threaded sleeve; 4, protective box; 5, base; 6, motor body; 7, rotating shaft. DETAILED DESCRIPTION

[0021] 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.

[0022] The present invention provides a technical solution: Embodiment 1 Combination Figures 1 to 6 A waterproof device that can increase the service life of a motor includes a protective box 4, a base 5 is fixedly connected to the bottom of the protective box 4, a motor body 6 is arranged in the protective box 4, a rotating shaft 7 is fixedly connected to the right side of the motor body 6, an installation mechanism 1 is arranged at the bottom of the rotating shaft 7 in the protective box 4, a positioning mechanism 2 is arranged in the installation mechanism 1, and a sealing mechanism 3 is arranged on the left side of the protective box 4.

[0023] The mounting mechanism 1 includes a fixed component 11 , a sliding component 12 and a first sealing component 13 . The fixed component 11 is arranged at the bottom of the motor body 6 , the sliding component 12 is arranged inside the fixed component 11 , and the first sealing component 13 is arranged on the right side of the sliding component 12 .

[0024] The fixing assembly 11 includes a fixing frame 1101, which is fixedly connected to the bottom of the motor body 6. A mounting card plate 1102 is fixedly connected to the bottom of the fixing frame 1101. A sleeve frame 1103 is sleeved on the outside of the mounting card plate 1102. The sleeve frame 1103 is fixedly connected to the bottom of the protective box 4. A closing plate 1104 is sleeved on the right side of the protective box 4. A positioning card plate 1105 is fixedly connected to the bottom of the left side of the closing plate 1104 corresponding to the sleeve frame 1103. The positioning card plate 1105 is sleeved in the sleeve frame 1103. The left side of the positioning card plate 1105 fits with the right side of the mounting card plate 1102. The sliding assembly 12 includes a fixing frame 1201, which is fixedly connected to the left side of the closing plate 1104. The fixing plates are fixedly connected to the upper and lower sides of the fixing frame 1201. 1202. A slide plate 1203 is slidably connected inside the fixed plate 1202, a movable slide bar 1204 is fixedly connected on the right side of the slide plate 1203, a first movable slide groove 1205 is provided on the right side of the fixed plate 1202 corresponding to the position of the movable slide bar 1204, a gripping rod 1206 is fixedly connected on the right side of the movable slide bar 1204, the first sealing assembly 13 comprises a connecting arc plate 1301, the connecting arc plate 1301 is fixedly connected to the right side of the slide plate 1203 near the direction of the rotating shaft 7, a fixed arc frame 1302 is fixedly connected on the right side of the connecting arc plate 1301, the inner sides of the connecting arc plate 1301 and the fixed arc frame 1302 are in contact with the outer ring of the rotating shaft 7, an arc-shaped rubber strip 1303 is fixedly connected inside the fixed arc frame 1302, and the inner side of the arc-shaped rubber strip 1303 is in contact with the outer ring of the rotating shaft 7.

[0025] Furthermore, the sleeve 1103 is sleeved on the outside of the installation card plate 1102 to limit the motor body 6 through the fixed frame 1101, and the positioning card plate 1105 is installed through the closing plate 1104 and is connected to the right side of the sleeve 1103 to limit a part of the installation card plate 1102, so that the motor body 6 cannot move by itself after being installed in the protection box 4, which increases the stability of the motor body 6 in the protection box 4 after installation, so that the sealing mechanism 3 on the left side of the protection box 4 and the first sealing component 13 on the right side will not move the motor body 6 and the rotating shaft 7 in the protection box 4 when the connecting arc plate 1301 and the rotating shaft 7 are sealed, which increases the sealing performance of the device when in use. At the same time, the staff only needs to pull the handles 1206 on the upper and lower sides to drive the fixed arc frames 130 on the upper and lower sides. 2 is moved inwardly and sleeved on the outer ring of the rotating shaft 7, so that the arc-shaped rubber strips 1303 on the upper and lower sides are closely fitted with the outer ring of the rotating shaft 7 to complete the sealing of the rotating shaft 7. The operation is simple and convenient for the staff to use. The arc-shaped rubber strips 1303 on the upper and lower sides are sleeved on the upper and lower sides of the outer ring of the rotating shaft 7 to complete the sealing of the rotating shaft 7, so that external moisture cannot enter the protection box 4 at the connection between the right fixed arc frame 1302 and the rotating shaft 7. At the same time, the fixed arc frames 1302 on the upper and lower sides are sleeved on the outer ring of the rotating shaft 7 through the arc-shaped rubber strips 1303 arranged on the inner side to seal the rotating shaft 7, which will not affect the rotation of the rotating shaft 7, so that the motor will not be in direct contact with external moisture, thereby avoiding the short circuit of the motor due to water, and preventing the corrosion of the motor housing caused by contact with water vapor, thereby increasing the service life of the motor.

[0026] Embodiment 2 See also Figure 4 , Figure 5 and Figure 7 On the basis of the first embodiment, it is further obtained that the positioning mechanism 2 includes a positioning component 21 and a moving component 22 , the positioning component 21 is arranged on the front side of the sliding component 12 , and the moving component 22 is arranged on the right side of the positioning component 21 .

[0027] The positioning assembly 21 includes a fixed box 2101, which is fixedly connected to the outer front side of the fixed frame 1201. A slide 2102 is slidably connected inside the fixed box 2101. A compression spring 2103 is fixedly connected inside the slide 2102. The compression spring 2103 is fixedly connected to the inner front side of the fixed box 2101. A positioning sleeve 2104 is fixedly connected to the rear side of the slide 2102. The positioning sleeve 2104 passes through the fixed frame 1201 backwards and is sleeved on the front end of the gripping rod 1206. The moving assembly 22 includes a limiting slide 2201, which is fixedly connected to the right side of the slide 2102. A second moving slide groove 2202 is opened at the position of the limiting slide 2201 corresponding to the position of the limiting slide 2201 on the fixed box 2101 and the closing plate 1104, and a connecting plate 2203 is fixedly connected to the right side of the limiting slide 2201.

[0028] Furthermore: the positioning sleeve 2104 passes through the fixed frame 1201 backward and is sleeved on the front end of the upper and lower grip rods 1206 to complete the positioning of the grip rods 1206, so that the fixed arc frames 1302 and the arc rubber strips 1303 on the upper and lower sides cannot move by themselves after installation, so that after the motor body 6 is installed, the fixed arc frames 1302 and the arc rubber strips 1303 on the upper and lower sides can maintain the sealing operation of the rotating shaft 7, thereby increasing the sealing stability of the device when in use. At the same time, the staff only needs to push the connecting plate 2203 forward to drive the positioning sleeves 2104 on the upper and lower sides to move forward, so that the staff can directly pull the upper and lower grip rods 1206 to move up and down to complete the sealing or unsealing of the rotating shaft 7 by the fixed arc frames 1302 and the arc rubber strips 1303. The operation is simple and convenient for the staff to use.

[0029] Embodiment 3 See also Figure 3 , Figure 8 and Fig. 9 On the basis of the first and second embodiments, it is further obtained that the sealing mechanism 3 includes a mounting assembly 31 and a second sealing assembly 32, the mounting assembly 31 is arranged on the left side of the protection box 4, and the second sealing assembly 32 is arranged on the left side of the mounting assembly 31.

[0030] The installation component 31 includes a connection wire 3101, which is fixedly connected to the left side of the motor body 6. A hole is opened on the left side of the protective box 4 corresponding to the position of the connection wire 3101. A threaded tube 3102 is fixedly connected to the position of the connection wire 3101 on the left side of the protective box 4, and a threaded tube 3103 is threadedly connected to the outer ring of the threaded tube 3102. The second sealing component 32 includes a threaded sleeve 3201, which is fixedly connected to the left side of the threaded tube 3103. A limiting ring 3202 is fixedly connected to the left side of the threaded sleeve 3201. A sealing rubber ring 3203 is provided on the left side of the inner ring of the threaded sleeve 3201. Sliders 3204 are fixedly connected to the front and rear sides of the sealing rubber ring 3203. The slide block 3204 is slidably connected to the front and rear sides of the threaded sleeve 3201, and a threaded sleeve 3205 is threadedly connected to the outer ring of the threaded sleeve 3201.

[0031] Furthermore, the staff only needs to rotate the threaded sleeve 3205 after the threaded barrel 3103 is installed to move the threaded sleeve 3205 to the left, so that the sealing rubber ring 3203 sleeved on the inner ring of the threaded sleeve 3201 can be squeezed inwardly and completely filled in the outer ring position of the connecting wire 3101 to complete the sealing work of the connecting wire 3101. The operation is simple and convenient for the staff to use. The threaded sleeve 3205 rotates on the outer ring of the threaded sleeve 3201 and moves to the left to contact the slider 3204 to squeeze the slider 3204. The sliders 3204 on the front and rear sides move inwardly to drive the sealing rubber ring 3203 to move inwardly on the front and rear sides. The sealing rubber ring 3203 moves inwardly as a rubber material and completely wraps around the outer ring of the connecting wire 3101 to complete the sealing work of the connecting wire 3101, so that external moisture cannot enter the protective box 4 through the left side, thereby avoiding the short circuit of the motor due to water while also preventing the corrosion of the motor casing caused by contact with water vapor, thereby increasing the service life of the motor.

[0032] In actual operation, when this device is used, when the motor body 6 needs to be installed, the staff first places the motor body 6 from right to left in the protection box 4, so that the installation card plate 1102 and the sleeve frame 1103 are clamped in the sleeve frame 1103. When installing the motor body 6, the staff pays attention to passing the connecting wire 3101 through the left side of the protection box 4 until the left side of the installation card plate 1102 fits with the left side of the sleeve frame 1103. After that, the staff clamps the closing plate 1104 into the right side of the protection box 4, so that the positioning card plate 1105 at the bottom of the closing plate 1104 is also clamped in the sleeve frame 1103, so that the left side of the positioning card plate 1105 fits with the right side of the installation card plate 1102. At this time, the installation of the motor body 6 is completed; After that, the staff member pushes the connecting plate 2203 to move forward, and the connecting plate 2203 moves forward to drive the slide cylinders 2102 on the upper and lower sides to move forward through the limit slide bar 2201, and the slide cylinders 2102 on the upper and lower sides move forward to drive the positioning sleeves 2104 on the upper and lower sides to move forward and retract into the fixed box 2101, and then the staff member pulls the upper and lower fixed arc frames 1302 to move inwards and approach each other through the upper and lower grip rods 1206 until the inner sides of the upper and lower fixed arc frames 1302 fit each other. At the outer ring of the rotating shaft 7, the staff then releases the limiting work on the connecting plate 2203. At this time, the slide cylinders 2102 on the upper and lower sides drive the positioning sleeves 2104 to move backward under the action of the compression springs 2103. The positioning sleeves 2104 on the upper and lower sides move backward and are sleeved on the front ends of the grip rods 1206 on the upper and lower sides to complete the limiting work on the upper and lower fixed arc frames 1302. At this time, the positioning work on the upper and lower fixed arc frames 1302 is completed, and the sealing work on the outer ring position of the rotating shaft 7 on the right side of the motor body 6 is completed; Finally, the staff will put the threaded barrel 3103 on the outer circle of the connecting wire 3101 and contact it with the threaded tube 3102 for rotation. The threaded barrel 3103 rotates and moves to the right on the outer circle of the threaded tube 3102 until the right side of the threaded barrel 3103 fits with the left side of the protective box 4, and the installation of the threaded barrel 3103 is completed. Then the staff will rotate the threaded sleeve 3205 to make the threaded sleeve 3205 move to the left on the outer circle of the threaded sleeve 3201. The threaded sleeve 3201 moves to the left and contacts the slider 3204 to squeeze the slider 3204. The sliders 3204 at the front and rear ends move inward to squeeze the sealing rubber ring 3203, so that the sealing rubber ring 3203 is deformed inward to dig out the gap in the outer circle of the connecting wire 3101 to fill it. At this time, the sealing work of the connecting wire 3101 is completed, and the installation of the motor is completed.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof device capable of increasing the service life of a motor, comprising a protective box (4), characterized in that: The bottom of the protection box (4) is fixedly connected to a base (5), a motor body (6) is arranged in the protection box (4), a rotating shaft (7) is fixedly connected to the right side of the motor body (6), a mounting mechanism (1) is arranged in the protection box (4) at the bottom of the rotating shaft (7), a positioning mechanism (2) is arranged in the mounting mechanism (1), and a sealing mechanism (3) is arranged on the left side of the protection box (4); The mounting mechanism (1) comprises a fixed component (11), a sliding component (12) and a first sealing component (13); the fixed component (11) is arranged at the bottom of the motor body (6); the sliding component (12) is arranged in the fixed component (11); and the first sealing component (13) is arranged on the right side of the sliding component (12); The fixing assembly (11) comprises a fixing frame (1101), the fixing frame (1101) is fixedly connected to the bottom of the motor body (6), the fixing frame (1101) is fixedly connected to the bottom of the fixing frame (1101), the outer side of the fixing frame (1102) is sleeved with a sleeve frame (1103), the sleeve frame (1103) is fixedly connected to the bottom of the protection box (4), a closing plate (1104) is sleeved inside the right side of the protection box (4), a positioning plate (1105) is fixedly connected to the bottom of the left side of the closing plate (1104) at a position corresponding to the sleeve frame (1103), the positioning plate (1105) is sleeved in the sleeve frame (1103), and the left side of the positioning plate (1105) is in contact with the right side of the fixing frame (1102); The sliding assembly (12) comprises a fixed frame (1201), the fixed frame (1201) is fixedly connected to the left side of the closing plate (1104), and the fixed frame (1201) is fixedly connected to the upper and lower sides thereof. A sliding plate (1203) is slidably connected to the fixed plate (1202), and a movable sliding rod (1204) is fixedly connected to the right side of the sliding plate (1203). A first movable sliding groove (1205) is provided on the right side of the fixed plate (1202) at a position corresponding to the movable sliding rod (1204), and a gripping rod (1206) is fixedly connected to the right side of the movable sliding rod (1204); The first sealing component (13) comprises a connecting arc plate (1301), the connecting arc plate (1301) being fixedly connected to the right side of the slide plate (1203) near the direction of the rotating shaft (7), the right side of the connecting arc plate (1301) being fixedly connected to a fixed arc frame (1302), the inner sides of the connecting arc plate (1301) and the fixed arc frame (1302) being in contact with the outer ring of the rotating shaft (7), the inner side of the fixed arc frame (1302) being fixedly connected to an arc-shaped rubber strip (1303), the inner side of the arc-shaped rubber strip (1303) being in contact with the outer ring of the rotating shaft (7); The positioning mechanism (2) comprises a positioning component (21) and a moving component (22), wherein the positioning component (21) is arranged on the front side of the sliding component (12), and the moving component (22) is arranged on the right side of the positioning component (21); The positioning assembly (21) comprises a fixed box (2101), the fixed box (2101) is fixedly connected to the outer front side of the fixed frame (1201), a slide tube (2102) is slidably connected inside the fixed box (2101), a compression spring (2103) is fixedly connected inside the slide tube (2102), the compression spring (2103) is fixedly connected to the inner front side of the fixed box (2101), a positioning sleeve (2104) is fixedly connected to the rear side of the slide tube (2102), and the positioning sleeve (2104) passes through the fixed frame (1201) backwards and is sleeved on the front end of the gripping rod (1206); The moving assembly (22) comprises a limiting slide bar (2201), the limiting slide bar (2201) is fixedly connected to the right side of the slide cylinder (2102), the fixing box (2101) and the closing plate (1104) are provided with a second moving slide groove (2202) at a position corresponding to the limiting slide bar (2201), and the right side of the limiting slide bar (2201) is fixedly connected to a connecting plate (2203); The mounting assembly (31) comprises a connection wire (3101), the connection wire (3101) being fixedly connected to the left side of the motor body (6), a hole being provided on the left side of the protection box (4) at a position corresponding to the connection wire (3101), a threaded tube (3102) being fixedly connected to the left side of the protection box (4) at a position corresponding to the connection wire (3101), and a threaded barrel (3103) being threadedly connected to the outer ring of the threaded tube (3102); The second sealing assembly (32) comprises a threaded sleeve (3201), the threaded sleeve (3201) being fixedly connected to the left side of the threaded barrel (3103), the left side of the threaded sleeve (3201) being fixedly connected to a limit ring (3202), a sealing rubber ring (3203) being provided on the left side of the inner ring of the threaded sleeve (3201), sliders (3204) being fixedly connected to the front and rear sides of the sealing rubber ring (3203), the sliders (3204) being slidably connected to the front and rear sides of the threaded sleeve (3201), and a threaded sleeve (3205) being threadedly connected to the outer ring of the threaded sleeve (3201).

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