A motor stator slot cleaning device

Abstract

The invention discloses a motor stator slot cleaning device, which belongs to the technical field of motor stator cleaning, and comprises: a base frame, a handle is fixedly connected to the base frame, and a cavity is arranged inside the base frame; a main pipe, the main pipe is rotatably mounted on the base frame and connected to a driving device installed inside the cavity, and the main pipe is communicated with an external air pump through a connecting sleeve rotatably connected to the upper end of the main pipe; a cleaning sleeve, the cleaning sleeve is sleeved on the outer side of the lower end of the main pipe and communicated with the inside of the main pipe, and the cleaning sleeve is made of elastic material, a plurality of bristles are fixedly connected to the outer side of the cleaning sleeve, and a plurality of air outlets are opened on the outer side of the cleaning sleeve; wherein, as the air pressure inside the main pipe increases, the bristles gradually press against the slot wall of the motor stator coil slot, and the invention can blow dirt off the bristles, so that the dirt will not remain on the bristles and affect the cleaning effect.

Description

Technical Field

[0001] The invention relates to the technical field of motor stator cleaning, and in particular to a motor stator slot cleaning device. Background Art

[0002] The stator of the motor is provided with a stator coil slot for winding the stator coil. During the operation of the motor, some motors fail due to the burning of the stator coil. Due to the high temperature during the burning, dirt will remain on the slot wall of the stator coil slot. The traditional cleaning method is usually to manually clean the motor stator coil slot with a brush. However, due to the small space inside the stator coil, the cleaning is more cumbersome. At the same time, dirt is easily left on the brush, thereby affecting the subsequent cleaning effect. In order to solve the above problems, the present invention provides a motor stator slot cleaning device. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a motor stator slot cleaning device that can blow dirt off the bristles so that the dirt will not remain on the bristles and affect the cleaning effect.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a motor stator slot cleaning device, comprising:

[0005] A base frame, wherein a handle is fixedly connected to the base frame, and a cavity is provided inside the base frame;

[0006] A main pipe, which is rotatably mounted on the base frame and connected to a driving device installed inside the cavity, and the main pipe is communicated with an external air pump through a connecting sleeve rotatably connected to the upper end thereof;

[0007] A cleaning sleeve, which is sleeved on the outer side of the lower end of the main pipe and communicates with the inside of the main pipe, and is made of elastic material, has a plurality of bristles fixedly connected to the outer side of the cleaning sleeve, and has a plurality of air outlets opened on the outer side of the cleaning sleeve;

[0008] As the air pressure inside the main pipe increases, the bristles gradually press against the slot walls of the motor stator coil slots.

[0009] Preferably, a spring sheet is rotatably mounted at the lower end opening of the main pipe, and a plurality of scraper strips corresponding to the slot walls of the motor stator coil slots are fixedly connected to the lower side of the spring sheet. As the air pressure inside the main pipe increases, the ends of the plurality of scraper strips away from the spring sheet will move in a direction away from each other and press against the slot walls of the motor stator coil slots.

[0010] Preferably, the circumference of the spring sheet is folded upward to form an annular portion, and an annular groove is provided on the inner annular surface of the annular portion of the spring sheet, and a convex ring matching the annular groove is fixedly connected to the main pipe;

[0011] The upper side of the spring sheet is fixedly connected with a prism, the prism is slidably connected with a limit shaft located inside the main pipe, the upper end of the limit shaft passes through the upper end surface of the main pipe and is fixedly connected with a fixing frame, and the fixing frame is fixedly installed on the base frame.

[0012] Preferably, the scraper strip is in an arc shape, and the arc edge protrudes in a direction away from the main pipe axis.

[0013] Preferably, one end of the bristles away from the cleaning sleeve is bent toward the rotation direction of the cleaning sleeve to form a hook shape, the air outlet is inclined, and the discharge end of the air outlet is inclined toward the rotation direction of the cleaning sleeve.

[0014] Preferably, a plurality of through openings are provided inside the cleaning sleeve and on the side wall of the main pipe.

[0015] Preferably, a driven gear is fixedly sleeved on the outer side of the main pipe located inside the cavity, the driven gear is meshed and connected with a driving gear rotatably installed inside the cavity, and the driving gear is driven by a motor installed inside the cavity.

[0016] Preferably, the inner side surfaces of the upper and lower sides of the connecting sleeve are respectively fitted with sealing rings fixedly connected to the outer side surface of the main pipe, and the main pipe is communicated with the connecting sleeve through a plurality of air inlets provided thereon.

[0017] Preferably, a stabilizing ring is movably sleeved on the outer side of the main pipe, and the stabilizing ring and the base frame are connected to each other via a spring, and the spring is sleeved on the outer side of the main pipe.

[0018] The beneficial effects of the present invention are:

[0019] The present invention realizes that when air is pumped into the interior of the main pipe, the cleaning sleeve and the spring sheet swell, so that the bristles and the scraper strips are pressed against the slot wall of the motor stator coil slot. At this time, the staff can slide the main pipe inside the motor stator coil slot along the axial direction of the motor stator by using the handle to complete the cleaning work of the motor stator coil slot.

[0020] The present invention realizes that the dirt cleaned by the bristles will be blown away by the air discharged from the air outlet through the arrangement of the air outlet on the cleaning sleeve, thereby preventing the dirt from remaining on the bristles and affecting the cleaning effect. Moreover, the scraper strip will divide the dirt into small pieces before the brush is used for cleaning, thereby enabling the dirt cleaned by the brush to be blown away better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a motor stator slot cleaning device provided in an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the assembly of the stabilizing ring and the spring of the present invention.

[0024] Figure 3 It is a cross-sectional view of the present invention.

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A.

[0026] Figure 5 It is a schematic diagram of the assembly of the cleaning sleeve and the shrapnel of the present invention.

[0027] Figure 6 It is a cross-sectional view of the cleaning sleeve of the present invention.

[0028] Figure 7 Schematic diagram of the internal structure of the cavity of the present invention.

[0029] Figure 8 It is a schematic diagram of the distribution of multiple groups of scraper strips of the present invention.

[0030] Description of reference numerals:

[0031] 1. Base frame, 2. Cavity, 3. Main pipe, 4. Connecting sleeve, 5. Cleaning sleeve, 6. Bristles, 7. Shrapnel, 8. Scraper strip, 9. Prism, 10. Limiting shaft, 11. Fixed frame, 12. Through-hole, 13. Driven gear, 14. Driving gear, 15. Sealing ring, 16. Stabilizing ring, 17. Spring, 18. Air outlet. DETAILED DESCRIPTION

[0032] 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.

[0033] The present invention provides a motor stator slot cleaning device, such as Figures 1 to 8 shown.

[0034] Embodiment 1:

[0035] A motor stator slot cleaning device comprises a base frame 1, a handle is fixedly connected to the base frame 1, a cavity 2 is arranged inside the base frame 1, a main pipe 3 is rotatably mounted on the base frame 1, the main pipe 3 is fixedly connected to a driven gear 13 rotatably mounted inside the cavity 2, the driven gear 13 is coaxially sleeved on the outside of the main pipe 3, and the driven gear 13 is meshedly connected with a driving gear 14 rotatably mounted inside the cavity 2, the driving gear 14 is driven by a motor mounted inside the cavity 2, the motor shaft of the motor is fixedly connected to the driving gear 14, the rotation of the motor shaft of the motor drives the driving gear 14 to rotate, thereby driving the main pipe 3 to rotate through the driven gear 13, and the motor is connected to an external power source through electric wires.

[0036] A connecting sleeve 4 is rotatably mounted on the upper end of the main pipe 3. The connecting sleeve 4 is connected to an external air pump. The inner side surfaces of the upper and lower sides of the connecting sleeve 4 are respectively fitted with sealing rings 15 fixedly connected to the outer side of the main pipe 3, so that the rotation of the main pipe 3 will not affect the connecting sleeve 4. A plurality of air inlets are provided between the two sealing rings 15 and on the main pipe 3. The air pump pumps external air into the interior of the connecting sleeve 4, and the air entering the interior of the connecting sleeve 4 enters the interior of the main pipe 3 through the air inlets.

[0037] A cleaning sleeve 5 is sleeved on the outer side of the lower end of the main pipe 3, and the main pipe 3 is connected to the cleaning sleeve 5 through a through hole 12 provided thereon. The cleaning sleeve 5 is made of an elastic material, and a plurality of bristles 6 are fixedly connected to the outer side of the cleaning sleeve 5. The cleaning sleeve 5 is also provided with a plurality of air outlets 18. The flow rate of air entering the main pipe 3 is greater than the flow rate of air discharged through the air outlets 18. The air entering the main pipe 3 gradually increases the air pressure inside the main pipe 3, thereby causing the cleaning sleeve 5 to begin to expand. After the cleaning sleeve 5 expands, the bristles 6 are pressed against the slot wall of the motor stator coil slot. Because the cleaning sleeve 5 is made of an elastic material and the cleaning sleeve 5 is opened by air, the air pressure inside the main pipe 3 gradually increases, and the cleaning sleeve 5 begins to expand. After the cleaning sleeve 5 expands, the bristles 6 are pressed against the slot wall of the motor stator coil slot. Therefore, the cleaning sleeve 5 can expand into a corresponding shape according to the shape of the cross-section of the motor stator coil slot, so that the cleaning effect of the bristles 6 is better, and the cleaning sleeve 5 does not expand before being inserted into the motor stator coil slot, so that the staff can better insert the cleaning sleeve 5 into the motor stator coil slot. After the cleaning sleeve 5 expands, the motor is started to make the main pipe 3 rotate continuously, so that the bristles 6 can clean the slot wall of the motor stator coil slot. During cleaning, the air inside the main pipe 3 is continuously discharged through the air outlet 18, so that the dirt remaining on the bristles 6 can be blown off, and then the dirt remaining on the bristles 6 can be prevented from affecting the cleaning effect.

[0038] In order to further improve the cleaning effect of the bristles 6, the end of the bristles 6 away from the cleaning sleeve 5 is set to a hook shape, and the bending direction is toward the rotation direction of the cleaning sleeve 5, thereby improving the cleaning effect of the bristles 6, and in order to better blow off the dirt at the bent position of the bristles 6, the air outlet 18 is also set to be inclined, and the discharge end of the air outlet 18 is inclined toward the rotation direction away from the cleaning sleeve 5, so that the air discharged through the air outlet 18 can be blown out along the angle of the bristles 6, and the dirt at the bent position of the bristles 6 can be better blown off. Because the bristles 6 will be subjected to force during the cleaning process, the end of the bristles 6 away from the cleaning sleeve 5 will be inclined toward the rotation direction away from the cleaning sleeve 5, and the angle between the air blown out from the discharge end of the air outlet 18 and the slot wall of the motor stator coil slot is in an inclined state, which can also better blow off a small amount of dirt remaining on the slot wall of the motor stator coil slot (such as Figure 6 As shown, Figure 6 The arrow in the figure indicates the rotation direction of the cleaning sleeve 5).

[0039] Embodiment 2:

[0040] On the basis of embodiment 1, in order to improve the cleaning effect of the bristles 6 and enable the air blown out of the air outlet 18 to better blow off the dirt on the bristles 6, a spring piece 7 is arranged at the opening of the lower end of the main pipe 3, and the spring piece 7 is rotatably installed on the main pipe 3. The circumference of the spring piece 7 is folded upward to form an annular portion, and an annular groove is provided on the inner ring surface of the annular portion. A convex ring matched with the annular groove is fixedly connected to the main pipe 3, and a prism 9 is fixedly connected to the upper side surface of the spring piece 7. The prism 9 is slidably connected to the prism groove provided on the lower end surface of the limiting shaft 10. The limiting shaft 10 is located inside the main pipe 3, and the upper end of the limiting shaft 10 passes through the main pipe 3 and is fixedly connected to a fixing frame 11. The fixing frame 11 is fixedly connected to the base frame 1. After the air pressure inside the main pipe 3 gradually increases, the spring piece 7 will also bulge outward to form a hemispherical shape. At the same time, under the action of the prism 9 and the limiting shaft 10, the spring piece 7 will remain stable and will not rotate when the main pipe 3 rotates.

[0041] The lower side of the spring piece 7 is fixedly connected with a plurality of scraper strips 8 corresponding to the slot walls of the motor stator coil slots (the distribution form of the plurality of scraper strips 8 is as follows: Figure 8 As shown in FIG. 1 ), after the spring sheet 7 expands, the ends of the plurality of scraper strips 8 away from the spring sheet 7 will move in a direction away from each other (as shown in FIG. 1 ). Figure 8As shown), the end of the scraper strip 8 away from the spring sheet 7 can be pressed against the slot wall of the motor stator coil slot. The scraper strip 8 is in an arc shape, which can make the contact area between the scraper strip 8 and the motor stator coil slot larger when pressing against the slot wall of the motor stator coil slot, thereby improving the cleaning stability. After the air pressure inside the main pipe 3 gradually decreases, the spring sheet 7 will gradually become horizontal under the action of its own elastic force. At this time, the end of the scraper strip 8 away from the spring sheet 7 will move in a direction close to each other, thereby making it convenient for the staff to take out the scraper strip 8, and also convenient for the staff to insert multiple scrapers 8 into the inside of the motor stator coil slot when cleaning.

[0042] When cleaning, the staff makes the main pipe 3 slide inside the motor stator coil slot along the direction of the motor stator axis. At this time, the scraper strip 8 can divide the dirt into small pieces. Later, when the bristles 6 are cleaning, the bristles 6 can clean multiple small areas during the rotation, so that the cleaned dirt will not stick together. This not only improves the cleaning effect of the bristles 6, but also enables the air blown out of the air outlet 18 to better blow off the dirt on the bristles 6.

[0043] Embodiment three:

[0044] On the basis of the second embodiment, in order to facilitate the staff to slide the cleaning sleeve 5 inside the motor stator coil slot, a stabilizing ring 16 is movably sleeved on the outer side of the main pipe 3, and the stabilizing ring 16 can rotate on the outer side of the main pipe 3 and slide along the axial direction of the main pipe 3, and a spring 17 is connected between the stabilizing ring 16 and the base frame 1, and the spring 17 is sleeved on the outer side of the main pipe 3, and one end of the spring 17 is fixedly connected to the base frame 1, and the other end is fixedly connected to the stabilizing ring 16. When in use, the cleaning sleeve 5 is inserted into the inside of the motor stator coil slot to be cleaned, and the stabilizing ring 16 is pressed against the end face of the motor stator, and then the external air pump and the motor inside the cavity 2 can be started. When cleaning, the staff presses the base frame 1 downward, and the stabilizing ring 16 will limit the main pipe 3. At the same time, due to the pressing force of the spring 17, the stabilizing ring 16 will remain stable on the motor stator, which can facilitate the staff to operate the cleaning sleeve 5 to slide inside the motor stator coil slot.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A motor stator slot cleaning device, characterized in that: include: base A frame, a handle is fixedly connected to the base frame, and a cavity is provided inside the base frame; The main pipe is rotatably mounted on the base frame and connected to a driving device installed inside the cavity. The main pipe is communicated with an external air pump through a connecting sleeve rotatably connected at its upper end; A cleaning sleeve is sleeved on the outside of the lower end of the main pipe and communicates with the inside of the main pipe. The cleaning sleeve is made of elastic material, a plurality of bristles are fixedly connected to the outside of the cleaning sleeve, and a plurality of air outlets are opened on the outside of the cleaning sleeve; As the air pressure inside the main pipe increases, the bristles gradually press against the slot wall of the motor stator coil slot; A spring sheet is rotatably mounted at the lower opening of the main pipe, and multiple groups of scraping strips corresponding to the slot walls of the motor stator coil slots are fixedly connected to the lower side of the spring sheet. As the air pressure inside the main pipe increases, the ends of the multiple groups of scraping strips away from the spring sheet will move in a direction away from each other and press against the slot walls of the motor stator coil slots. The circumference of the spring piece is folded upward to form an annular portion, and an annular groove is provided on the inner annular surface of the annular portion of the spring piece, and a convex ring matching the annular groove is fixedly connected to the main pipe; The upper side of the spring piece is fixedly connected with a prism, the prism is slidably connected with a limit shaft located inside the main pipe, the upper end of the limit shaft penetrates the upper end surface of the main pipe and is fixedly connected with a fixing frame, and the fixing frame is fixedly installed on the base frame; The scraper strip is in the shape of an arc, and the arc edge protrudes in a direction away from the main pipe axis; One end of the bristle away from the cleaning sleeve is bent toward the rotation direction of the cleaning sleeve to form a hook shape, the air outlet is obliquely distributed, and the discharge end of the air outlet is inclined toward the rotation direction of the cleaning sleeve; A plurality of through openings are provided inside the cleaning sleeve and on the side wall of the main pipe; The inner side surfaces of the upper and lower sides of the connecting sleeve are respectively fitted with sealing rings fixedly connected to the outer side surface of the main pipe, and the main pipe is connected to the connecting sleeve through a plurality of air inlets provided thereon; The outer side of the main pipe is movably sleeved with a stabilizing ring, the stabilizing ring and the base frame are connected to each other through a spring, and the spring is sleeved on the outer side of the main pipe.

2. The motor stator slot cleaning device according to claim 1, characterized in that: A driven gear is fixedly sleeved on the outer side of the main pipe located inside the cavity. The driven gear is meshed and connected with a driving gear rotatably installed inside the cavity. The driving gear is driven by a motor installed inside the cavity.

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