Generator excitation brush holder cleaning device

Abstract

The generator excitation brush holder cleaning device comprises a cleaning box, a first motor is fixedly installed on the right side of the cleaning box, and the output end of the first motor penetrates through the cleaning box, extends into the cleaning box and is fixedly provided with four first rotating shafts; the four first rotating shafts are connected through bevel gears, fixing blocks are rotationally connected to the surfaces of the first rotating shafts, the fixing blocks are fixedly installed on the inner wall of the cleaning box, first ice spraying assemblies are arranged on the surfaces of the first rotating shafts, and transmission assemblies are arranged on the surfaces of the first rotating shafts; and a second rotating shaft is arranged at the bottom of the first rotating shaft through a transmission assembly, the second rotating shaft is rotationally connected into the cleaning box, and a second ice spraying assembly is arranged at the top of the second rotating shaft. The excitation brush holder can be cleaned in multiple directions at a time, so that the cleaning speed of the excitation brush holder is higher, the cleaning angle can be adjusted, and the brush holder can be cleaned more cleanly.

Description

Technical Field

[0001] The invention relates to the technical field of generator excitation brush holder cleaning, and in particular to a generator excitation brush holder cleaning device. Background Art

[0002] The excitation brush holder is an important component in the generator excitation system. It is mainly used to fix and support the carbon brushes to ensure good contact between the carbon brushes and the collector rings, thereby ensuring stable transmission of the excitation current.

[0003] When the generator is running, heat is generated inside, causing the air temperature to rise and convection to form. During the air convection process, dust in the surrounding air will be sucked into the generator and move to the excitation brush holder and other parts with the airflow. Since the air flow at the brush holder is relatively complex, there are some areas with low air flow speed, and dust is easy to settle in these areas. Dust accumulation in the brush holder will cause the carbon brush to get stuck, increase the contact resistance of the carbon brush, affect the current distribution, and cause a series of adverse results such as sparking. Therefore, the excitation brush holder needs to be disassembled and cleaned regularly.

[0004] When cleaning the excitation brush holder, an excitation brush holder cleaning device is used to clean it. Some excitation brush holder cleaning devices use dry ice cleaning technology to clean the excitation brush holder. The dry ice cleaning machine uses compressed air as power and carrier to accelerate the spray of -78.5℃ dry ice particles through the nozzle to the surface of the excitation brush holder. After the dry ice particles come into contact with the dirt on the surface of the brush holder, the dirt is quickly frozen and brittle, and the dirt changes from a viscoelastic state to a solid state, with increased brittleness and reduced viscosity. The adsorption force on the brush holder surface is suddenly reduced, and the surface area is increased, so that the dirt can be automatically peeled off.

[0005] In the process of cleaning the excitation brush holder, most of the existing excitation brush holder cleaning devices have only one nozzle, while the excitation brush holder has multiple surfaces that need to be cleaned. After cleaning one side of the excitation brush holder, the excitation brush holder needs to be taken out of the cleaning device, and the next surface to be cleaned is facing the nozzle, and then put into the device again for cleaning. The above operation needs to be repeated many times. During this process, it takes a lot of time to take out, reverse and place the excitation brush holder, and too many times of taking out, reverse and placing will also increase the labor intensity of the staff. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a generator excitation brush holder cleaning device, which solves the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A generator excitation brush holder cleaning device comprises a cleaning box, a first motor is fixedly installed on the right side of the cleaning box, an output end of the first motor passes through the cleaning box, extends to the inside of the cleaning box and is fixedly installed with a first rotating shaft, the number of the first rotating shafts is four, the four first rotating shafts are connected by bevel gears, a fixed block is rotatably connected to the surface of the first rotating shaft, the fixed block is fixedly installed on the inner wall of the cleaning box, a first ice spraying assembly is arranged on the surface of the first rotating shaft, a transmission assembly is arranged on the surface of the first rotating shaft, a second rotating shaft is rotatably arranged at the bottom of the first rotating shaft through the transmission assembly, the second rotating shaft is rotatably connected to the inside of the cleaning box, a second ice spraying assembly is arranged on the top of the second rotating shaft, a lifting assembly is arranged on the top of the cleaning box, a moving frame is arranged on the top of the cleaning box through the lifting assembly, a clamping assembly is arranged inside the moving frame, and a collecting assembly is arranged on the right side of the cleaning box.

[0008] Preferably, the first ice spraying assembly includes a first rotating plate arranged on the surface of the first rotating shaft, a first spray head is fixedly installed on the inner side of the first rotating plate, a first connecting hose is fixedly installed inside the first spray head, and a feeding end of the first connecting hose extends to the outside of the cleaning box.

[0009] Preferably, the transmission assembly includes a first pulley arranged on the surface of the first rotating shaft, a synchronous belt is meshed with the surface of the first pulley, a second pulley is meshed with the inner wall of the synchronous belt, and the second pulley is fixedly installed on the surface of the second rotating shaft.

[0010] Preferably, the second ice spraying assembly includes a second rotating plate arranged on the surface of the second rotating shaft, a second spray head is fixedly installed on the top of the second rotating plate, a second connecting hose is fixedly installed inside the second spray head, and a feeding end of the second connecting hose extends to the outside of the cleaning box.

[0011] Preferably, the lifting assembly includes a support frame arranged on the top of the cleaning box, an electric push rod is fixedly installed on the top of the support frame, the output end of the electric push rod is fixedly connected to the top of the moving frame, and a movable rod is slidably connected inside the support frame, and the movable rod is fixedly installed on the top of the moving frame.

[0012] Preferably, the clamping assembly includes a second motor arranged on the rear side of the mobile frame, the output end of the second motor passes through the mobile frame, extends to the interior of the mobile frame and is fixedly installed with a screw, the surface of the screw is threadedly connected to a mobile plate, the interior of the mobile plate is slidably connected to a guide rod, the guide rod is fixedly installed inside the mobile frame, and a clamping block is fixedly installed on the opposite surface of the mobile plate.

[0013] Preferably, the collecting assembly comprises a collecting channel arranged on the right side of the cleaning box, a collecting box is fixedly installed at the bottom of the collecting channel, a filter is arranged inside the collecting box, and a vacuum pump is arranged on the right side of the collecting box.

[0014] Preferably, a box door is provided on the front side of the collection box, and a door handle is fixedly installed on the front side of the box door.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The generator excitation brush holder cleaning device can clean the excitation brush holder from four sides through the first ice spraying assembly when the excitation brush holder enters the cleaning box, so that the second ice spraying assembly cleans the excitation brush holder from the bottom, so that the excitation brush holder can be cleaned from multiple directions at one time, thereby making the cleaning speed of the excitation brush holder faster and reducing the labor intensity of the staff.

[0016] 2. The generator excitation brush holder cleaning device rotates the first rotating shaft through the first motor. Since the first rotating shafts are connected by bevel gears and the first rotating shaft is connected to the second rotating shaft through a transmission assembly, the angles of the first ice spray assembly and the second ice spray assembly can be adjusted at the same time. When cleaning is performed at an angle perpendicular to the surface of the brush holder, the impact force of the dry ice particles is the largest, which can effectively remove surface dirt and achieve a higher coverage rate. By adjusting the cleaning angle and spraying from different angles, it can be ensured that the entire brush holder can be cleaned, thereby making the brush holder clean more thoroughly.

[0017] 3. The generator excitation brush holder cleaning device, after the clamping assembly clamps and fixes the excitation brush holder, can move the movable frame downward or upward through the lifting assembly, so that the clamping assembly drives the excitation brush holder to move downward or upward, so that the excitation brush holder can automatically enter or move out of the cleaning box, without the need to manually put in or take out the excitation brush holder, reducing the labor intensity of the staff.

[0018] 4. The generator excitation brush holder cleaning device uses the vacuum pump in the collection assembly to evacuate the inside of the collection box, and sucks the dry ice particles and stains at the bottom of the cleaning box from the collection channel to the filter net, so as to facilitate the cleaning of the dry ice particles and stains at the bottom of the cleaning box and avoid the accumulation of a large number of dry ice particles and stains at the bottom of the cleaning box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional stereogram of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 It is a top cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the structure of the first rotating shaft portion of the present invention; Figure 6 It is a schematic diagram of the structure of the clamping block part of the present invention; Figure 7 It is a partial structural schematic diagram of the collection box of the present invention.

[0020] In the figure: 1. cleaning box; 2. first motor; 3. first rotating shaft; 4. box door; 5. door handle; 6. first rotating plate; 7. first nozzle; 8. first connecting hose; 9. first pulley; 10. synchronous belt; 11. second pulley; 12. second rotating shaft; 13. second rotating plate; 14. second nozzle; 15. second connecting hose; 16. support frame; 17. electric push rod; 18. movable rod; 19. moving frame; 20. second motor; 21. screw; 22. moving plate; 23. guide rod; 24. clamping block; 25. collecting channel; 26. collecting box; 27. filter screen; 28. vacuum pump; 29. ​​fixing block. 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] Reference Figure 1-7A generator excitation brush holder cleaning device comprises a cleaning box 1, a first motor 2 is fixedly installed on the right side of the cleaning box 1, an output end of the first motor 2 passes through the cleaning box 1 and extends to the inside of the cleaning box 1 and is fixedly installed with a first rotating shaft 3, the number of the first rotating shaft 3 is four, the four first rotating shafts 3 are connected by bevel gears, a fixed block 29 is rotatably connected to the surface of the first rotating shaft 3, the fixed block 29 is fixedly installed on the inner wall of the cleaning box 1, a first ice spraying assembly is arranged on the surface of the first rotating shaft 3, the first ice spraying assembly comprises a first rotating plate 6 arranged on the surface of the first rotating shaft 3, a first spray head 7 is fixedly installed on the inner side of the first rotating plate 6, a first connecting hose 8 is fixedly installed inside the first spray head 7, a feeding end of the first connecting hose 8 extends to the outside of the cleaning box 1, and the first connecting The feeding end of the connecting hose 8 is connected to the conveying end of the external dry ice cleaning machine. The dry ice particles are conveyed from the first connecting hose 8 to the first nozzle 7 through the external dry ice cleaning machine, and then sprayed out from the first nozzle 7, so as to facilitate the cleaning of the excitation brush holder from four sides. A transmission assembly is arranged on the surface of the first rotating shaft 3, and a second rotating shaft 12 is arranged at the bottom of the first rotating shaft 3 through the transmission assembly. The second rotating shaft 12 is rotatably connected to the inside of the cleaning box 1, and a second ice spraying assembly is arranged on the top of the second rotating shaft 12. The second ice spraying assembly includes a second rotating plate 13 arranged on the surface of the second rotating shaft 12, and a second nozzle 14 is fixedly installed on the top of the second rotating plate 13. A second connecting hose 15 is fixedly installed inside the second nozzle 14, and a feeding end of the second connecting hose 15 extends to the outside of the cleaning box 1. The feeding end of the second connecting hose 15 is connected to the conveying end of the external dry ice cleaning machine. The dry ice particles are conveyed from the second connecting hose 15 to the second nozzle 14 through the external dry ice cleaning machine, and then sprayed out from the second nozzle 14, so as to clean the excitation brush holder from the bottom. The transmission assembly includes a first pulley 9 arranged on the surface of the first rotating shaft 3, and a synchronous belt 10 is meshed on the surface of the first pulley 9. A second pulley 11 is meshed on the inner wall of the synchronous belt 10. The second pulley 11 is fixedly installed on the surface of the second rotating shaft 12. When the first rotating shaft 3 rotates, it can drive the first pulley 9 to rotate, so that the synchronous belt 10 drives the second pulley 11 to rotate, so that the second rotating shaft 12 rotates synchronously, so as to facilitate the synchronous adjustment of the angle of the second nozzle 14, and the four The first rotating shafts 3 are connected by bevel gears. When one bevel gear rotates forward, the other bevel gear rotates in the opposite direction, so that the first nozzle 7 can be turned downward or upward at the same time. When the first nozzle 7 and the second nozzle 14 are tilted, dry ice particles can enter the corners, gaps and some parts with complex internal structures of the cleaning excitation brush holder at a certain angle, so that the excitation brush holder can be cleaned more thoroughly, and the angle adjustment operation can be completed by using one motor, which reduces the waste of the motor. A lifting assembly is provided on the top of the cleaning box 1, and a moving frame 19 is provided on the top of the cleaning box 1 through the lifting assembly. A clamping assembly is provided inside the moving frame 19, and a collecting assembly is provided on the right side of the cleaning box 1. The generator excitation brush holder cleaning device,When the excitation brush holder enters the cleaning box 1, the excitation brush holder can be cleaned from four sides by the first ice spray assembly, so that the second ice spray assembly cleans the excitation brush holder from the bottom, so that the excitation brush holder can be cleaned from multiple directions at one time, so that the cleaning speed of the excitation brush holder is faster and the labor intensity of the staff can be reduced.

[0023] It is worth mentioning that the above-mentioned external dry ice cleaning machine accelerates the dry ice particles to a certain speed through a power source such as compressed air, and the high-speed moving dry ice particles have a certain kinetic energy. When these particles hit the dirt on the surface of an object, a mechanical impact force is generated, just like countless tiny "bullets" hitting the dirt, knocking the dirt off the surface of the object, thereby achieving the cleaning effect. Therefore, the above-mentioned external dry ice cleaning machine can be regarded as a prior art and will not be described in detail later.

[0024] Specifically, the clamping assembly includes a second motor 20 arranged on the rear side of the movable frame 19, the output end of the second motor 20 passes through the movable frame 19, extends to the inside of the movable frame 19 and is fixedly installed with a screw 21, the surface of the screw 21 is threadedly connected with a movable plate 22, the inside of the movable plate 22 is slidably connected with a guide rod 23, the guide rod 23 is fixedly installed inside the movable frame 19, and a clamping block 24 is fixedly installed on the opposite surface of the movable plate 22, the screw 21 is a bidirectional threaded rod, when the screw 21 is rotated by the second motor 20, the movable plate 22 can simultaneously approach each other along the guide rod 23, so that the clamping block 24 approaches each other, so that the clamping block 24 is in close contact with the handle of the excitation brush holder, thereby facilitating the fixing of the excitation brush holder, so that the subsequent excitation brush holder can move up and down more stably.

[0025] Specifically, the lifting assembly includes a support frame 16 arranged on the top of the cleaning box 1, and an electric push rod 17 is fixedly installed on the top of the support frame 16. The output end of the electric push rod 17 is fixedly connected to the top of the moving frame 19. A movable rod 18 is slidably connected inside the support frame 16, and the movable rod 18 is fixedly installed on the top of the moving frame 19. The movable rod 18 can guide the up and down movement of the moving frame 19, so that the moving frame 19 can move more stably. The electric push rod 17 can provide driving force for the up and down movement of the moving frame 19, so that the excitation brush holder can be automatically moved up and down later, so that the excitation brush holder can automatically enter the cleaning box 1 for cleaning and move out of the cleaning box 1 for taking.

[0026] Specifically, the collecting component includes a collecting channel 25 arranged on the right side of the cleaning box 1, a collecting box 26 is fixedly installed at the bottom of the collecting channel 25, a filter screen 27 is arranged inside the collecting box 26, a vacuum pump 28 is arranged on the right side of the collecting box 26, a box door 4 is arranged on the front side of the collecting box 26, and a door handle 5 is fixedly installed on the front side of the box door 4. The inside of the collecting box 26 is evacuated by the vacuum pump 28 to form a negative pressure inside the collecting box 26, so that the dry ice particles and stains at the bottom of the cleaning box 1 can be sucked from the collecting channel 25 to the filter screen 27, so as to avoid the dry ice particles and stains from accumulating in large quantities at the bottom of the cleaning box 1. The box door 4 is opened by the door handle 5, so as to facilitate the cleaning of the dry ice particles and stains on the filter screen 27 or the replacement of the filter screen 27.

[0027] When in use: place the excitation brush holder between the clamping blocks 24, drive the screw 21 to rotate through the second motor 20, so that the movable plates 22 are close to each other along the guide rod 23, and the excitation brush holder is clamped and fixed, and the first rotating shaft 3 is rotated by the first motor 2. Since the first rotating shafts 3 are connected by bevel gears, the first rotating plate 6 and the first nozzle 7 can be turned down or up at the same time to adjust the angle of the first nozzle 7. The rotation of the first rotating shaft 3 will drive the first pulley 9 to rotate, so that the synchronous belt 10 drives the second pulley 11 to rotate, so that the second rotating shaft 12, the second rotating plate 13 and the second nozzle 14 rotate, and the second nozzle 14 is adjusted. 14, the excitation brush holder can be moved downward into the cleaning box 1 by the electric push rod 17, and the dry ice particles are respectively transported from the first connecting hose 8 and the second connecting hose 15 to the first nozzle 7 and the second nozzle 14 by the external dry ice cleaning machine, so that the first nozzle 7 cleans the excitation brush holder from four sides, and the second nozzle 14 cleans the excitation brush holder from the bottom. After cleaning, the excitation brush holder can be moved downward and out of the cleaning box 1 by the electric push rod 17, and the inside of the collecting box 26 is evacuated by the vacuum pump 28, so that the dry ice particles and stains at the bottom of the cleaning box 1 are sucked from the collecting channel 25 to the filter 27.

[0028] 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.

[0029] 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 generator excitation brush holder cleaning device, comprising a cleaning box (1), characterized in that: A first motor (2) is fixedly mounted on the right side of the cleaning box (1); an output end of the first motor (2) passes through the cleaning box (1) and extends into the interior of the cleaning box (1) and is fixedly mounted with a first rotating shaft (3); the number of the first rotating shafts (3) is four, and the four first rotating shafts (3) are connected to each other via bevel gears; a fixed block (29) is rotatably connected to the surface of the first rotating shaft (3); the fixed block (29) is fixedly mounted on the inner wall of the cleaning box (1); a first ice spraying assembly is arranged on the surface of the first rotating shaft (3); a transmission assembly is arranged on the surface of the first rotating shaft (3); a second rotating shaft (12) is rotatably connected to the interior of the cleaning box (1); a second ice spraying assembly is arranged on the top of the second rotating shaft (12); a lifting assembly is arranged on the top of the cleaning box (1); a moving frame (19) is arranged on the top of the cleaning box (1) via the lifting assembly; a clamping assembly is arranged inside the moving frame (19); and a collecting assembly is arranged on the right side of the cleaning box (1).

2. A generator excitation brush holder cleaning device according to claim 1, characterized in that: The first ice spraying assembly comprises a first rotating plate (6) arranged on the surface of the first rotating shaft (3), a first spray head (7) being fixedly mounted inside the first rotating plate (6), a first connecting hose (8) being fixedly mounted inside the first spray head (7), and a feeding end of the first connecting hose (8) extending to the outside of the cleaning box (1).

3. A generator excitation brush holder cleaning device according to claim 1, characterized in that: The transmission assembly comprises a first pulley (9) arranged on the surface of a first rotating shaft (3), a synchronous belt (10) being meshedly arranged on the surface of the first pulley (9), a second pulley (11) being meshedly arranged on the inner wall of the synchronous belt (10), and the second pulley (11) being fixedly mounted on the surface of a second rotating shaft (12).

4. A generator excitation brush holder cleaning device according to claim 1, characterized in that: The second ice spraying assembly comprises a second rotating plate (13) arranged on the surface of the second rotating shaft (12); a second spray head (14) is fixedly mounted on the top of the second rotating plate (13); a second connecting hose (15) is fixedly mounted inside the second spray head (14); and a feeding end of the second connecting hose (15) extends to the outside of the cleaning box (1).

5. A generator excitation brush holder cleaning device according to claim 1, characterized in that: The lifting assembly comprises a support frame (16) arranged on the top of the cleaning box (1), an electric push rod (17) is fixedly installed on the top of the support frame (16), an output end of the electric push rod (17) is fixedly connected to the top of the moving frame (19), and a movable rod (18) is slidably connected inside the support frame (16), and the movable rod (18) is fixedly installed on the top of the moving frame (19).

6. A generator excitation brush holder cleaning device according to claim 1, characterized in that: The clamping assembly comprises a second motor (20) arranged at the rear side of the moving frame (19); an output end of the second motor (20) penetrates the moving frame (19) and extends into the interior of the moving frame (19) and is fixedly mounted with a screw rod (21); a moving plate (22) is threadedly connected to the surface of the screw rod (21); a guide rod (23) is slidably connected to the interior of the moving plate (22); the guide rod (23) is fixedly mounted in the interior of the moving frame (19); and a clamping block (24) is fixedly mounted on the opposite surface of the moving plate (22).

7. A generator excitation brush holder cleaning device according to claim 1, characterized in that: The collecting assembly comprises a collecting channel (25) arranged on the right side of the cleaning box (1), a collecting box (26) is fixedly mounted on the bottom of the collecting channel (25), a filter screen (27) is arranged inside the collecting box (26), and a vacuum pump (28) is arranged on the right side of the collecting box (26).

8. A generator excitation brush holder cleaning device according to claim 7, characterized in that: The collection box (26) is provided with a box door (4) on the front side, and a door handle (5) is fixedly mounted on the front side of the box door (4).

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