Generator excitation carbon brush replacement device

Abstract

The invention discloses a generator excitation carbon brush replacement device which comprises a mounting base, a vertical moving assembly is arranged at the top of the mounting base, a movable mounting frame is arranged at the top of the mounting base through the vertical moving assembly, and a transverse moving assembly is arranged in the movable mounting frame. A moving plate is arranged at the top of the moving mounting frame through a transverse moving assembly, and a limiting sleeve is fixedly arranged at the top of the moving plate. The transverse moving assembly drives the moving plate to move, so that the limiting sleeve containing the carbon brush replacing machine moves to the replacing position, then the vertical lifting assembly drives the moving plate to move upwards by moving the mounting frame, the limiting sleeve drives the replaced carbon brush to be pushed into the mounting position, and therefore the carbon brush can be replaced conveniently; the problems of long time consumption and collision and damage of the carbon brush caused by manual replacement of the carbon brush are avoided, and a plurality of carbon brushes can be replaced at the same time.

Description

Technical Field

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

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by a turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator, which then converts it into electricity. Generators are widely used in industrial and agricultural production, national defense, science and technology, and daily life. There are many forms of generators, but their working principles are all based on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is to use appropriate magnetic and conductive materials to form magnetic circuits and circuits that are electromagnetically inductive with each other to generate electromagnetic power and achieve the purpose of energy conversion.

[0003] The excitation carbon brush is a key component in the generator excitation system. It is mainly made of graphite and has a block-like appearance. It is installed on the brush holder and exerts a certain pressure through the spring to make it in close contact with the rotating excitation slip ring. Its core function is to stably transmit the excitation current and maintain the rotor magnetic field strength. It determines the size and stability of the generator output voltage and reactive power, and is of great significance to the control of power output quality.

[0004] During the use of the generator, the excitation carbon brushes will continue to wear. When the excitation carbon brushes are severely worn, poor contact will occur, and in severe cases, the excitation current will be interrupted. Therefore, the excitation carbon brushes need to be replaced regularly. In the prior art, the old carbon brushes are removed manually and replaced with new ones. The disassembly and assembly operations are troublesome and time-consuming, and the carbon brushes are easily damaged by collisions. In addition, the turbine carbon brushes of the nuclear power unit are arranged in groups in the brush holder, and each group includes multiple carbon brushes. Replacing the carbon brushes one by one is inefficient. Based on the above problems, the present application proposes a generator excitation carbon brush replacement device. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a generator excitation carbon brush replacement device, which is used to solve the problem of relying on manual operation to remove the old carbon brushes and then replace them with new carbon brushes. The disassembly and assembly operations are cumbersome and time-consuming, and the carbon brushes are easily damaged by collisions. Moreover, the turbine carbon brushes of the nuclear power unit are arranged in groups in the brush holder, each group includes multiple carbon brushes, and the carbon brushes need to be replaced one by one, which leads to low work efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A generator excitation carbon brush replacement device comprises a mounting base, a vertical moving component is arranged on the top of the mounting base, a movable mounting frame is arranged on the top of the mounting base through the vertical moving component, a lateral moving component is arranged inside the movable mounting frame, a movable plate is arranged on the top of the movable mounting frame through the lateral moving component, a limiting sleeve is fixedly arranged on the top of the movable plate, an inverted U-shaped mounting frame is fixedly arranged on the top of the mounting base, a rectangular notch is penetrated on the top of the inverted U-shaped mounting frame, and a carbon brush limiting component is arranged on the top of the inverted U-shaped mounting frame.

[0007] Preferably, the vertical moving component includes a mounting vertical plate, which is fixedly mounted on the top of the mounting base, and a driving motor is fixedly arranged on the rear side of the mounting vertical plate, and a rotating shaft is fixedly arranged on the output end of the driving motor, a worm sleeve is fixedly arranged on the surface of the rotating shaft, a worm wheel is meshed on the surface of the worm sleeve, a rotating screw is fixedly arranged inside the worm wheel, the rotating screw is rotatably arranged inside the mounting base, an internally threaded tube is threaded on the surface of the rotating screw, and the internally threaded tube is fixedly mounted on the bottom of the movable mounting frame.

[0008] Preferably, the lateral movement component includes a fixed plate fixedly mounted on the rear side of the mobile mounting frame, a servo motor is fixedly arranged on the rear side of the fixed plate, a connecting screw is fixedly arranged on the output end of the servo motor, a movable screw sleeve is threadedly arranged on the surface of the connecting screw, a U-shaped mounting plate is fixedly arranged on the top of the movable screw sleeve, a position detection component is arranged inside the U-shaped mounting plate, and the U-shaped mounting plate is fixedly mounted on the bottom of the mobile plate.

[0009] Preferably, the position detection component includes a movable extrusion rod and a pressure sensor, the movable extrusion rod is slidably arranged inside a U-shaped mounting plate, a rectangular metal plate is fixedly arranged on the end of the movable extrusion rod, a spring is fixedly arranged on one side of the rectangular metal plate, and the spring is fixedly connected to the U-shaped mounting plate. There are two pressure sensors, and the two pressure sensors are respectively fixedly mounted on the front and rear side walls of the movable mounting frame.

[0010] Preferably, the carbon brush limiting assembly includes a connecting vertical plate, which is fixedly mounted on the top of an inverted U-shaped mounting frame, an electric push rod is fixedly provided on one side of the connecting vertical plate, a clamping plate is fixedly provided on the output end of the electric push rod, a U-shaped fixing plate and a protective pad are fixedly provided on the side of the clamping plate away from the connecting vertical plate, and a limiting roller is rotatably provided inside the U-shaped fixing plate.

[0011] Preferably, a mounting slot is provided through the top of the movable mounting frame, a connecting slider is slidably provided inside the mounting slot, the connecting slider is fixedly installed at the bottom of the movable plate, and both the mounting slot and the connecting slider are T-shaped structures.

[0012] Preferably, there are several limiting sleeves, and the several limiting sleeves are divided into two groups, and the two groups of limiting sleeves are symmetrically distributed.

[0013] Preferably, the U-shaped mounting plate is in a U-shaped structure, a connecting slide groove is provided through the top of the movable mounting frame, and the top end of the U-shaped mounting plate is located inside the connecting slide groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The generator excitation carbon brush replacement device fixes the carbon brush changer through a limit assembly, and then drives the movable plate to move upward through the movable installation frame through the vertical lifting assembly, so that the limit sleeve contacts the carbon brush changer, and the wire that fixes the carbon brush changer is removed. The vertical moving assembly drives the movable installation frame to reset, so that the horizontal moving assembly drives the movable plate to move downward, so that the limit sleeve drives the carbon brush changer to move downward, and then drives the movable plate to move through the horizontal moving assembly, so that the limit sleeve where the carbon brush changer is placed is moved to the replacement position, and then the vertical lifting assembly drives the movable plate to move upward through the movable installation frame, so that the limit sleeve drives the replaced carbon brush changer to be pushed into the installation position, thereby facilitating the replacement of the carbon brush changer, avoiding the problem of relying on manual replacement of the carbon brush, which is time-consuming and damaged by the carbon brush, and multiple carbon brushes can be replaced at the same time.

[0015] 2. The generator excitation carbon brush replacement device detects pressure changes through a position detection component, and indicates the moving position of the limit sleeve through the pressure change, so that the moving position of the limit sleeve can be detected, so that the limit sleeve can be accurately moved to the replacement position, avoiding misalignment between the limit sleeve and the carbon brush, resulting in the carbon brush being unable to enter the interior of the limit sleeve, thereby avoiding the damaged carbon brush falling from the rectangular notch and bumping against the new carbon brush, and avoiding the new carbon brush being unable to be inserted into the specified position, resulting in the carbon brush being squeezed and damaged.

[0016] 3. The generator excitation carbon brush replacement device can clamp and fix the carbon brush through the carbon brush limiting assembly, and can protect the carbon brush through the protective pad, and the carbon brush limiting assembly can clamp the carbon brush and limit it at the same time, so that when the limiting sleeve moves to the replacement position, the carbon brush and the limiting sleeve remain vertically aligned, thereby avoiding misalignment between the carbon brush and the limiting sleeve, thereby removing the damaged carbon brush and facilitating pushing the new carbon brush to the replacement position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a positive isometric drawing of the structure of the present invention; Figure 2 It is a schematic diagram of a longitudinal section of the structure of the present invention; Figure 3It is a schematic diagram of the structure of the vertical moving assembly of the present invention; Figure 4 It is a schematic diagram of the local structure of the present invention; Figure 5 for Figure 2 A magnified view of the structure at A; Figure 6 It is a schematic diagram of the structure of the carbon brush limiting assembly of the present invention.

[0018] In the figure: 1. Mounting base; 2. Mounting vertical plate; 3. Driving motor; 4. Rotating shaft; 5. Worm sleeve; 6. Worm wheel; 7. Rotating screw; 8. Internal threaded pipe; 9. Moving mounting frame; 10. Fixed plate; 11. Servo motor; 12. Connecting screw; 13. Moving screw sleeve; 14. Moving plate; 15. Limiting sleeve; 16. Mounting slide; 17. Connecting slider; 18. U-shaped mounting plate; 19. Moving extrusion rod; 20. Rectangular metal plate; 21. Spring; 22. Pressure sensor; 23. Inverted U-shaped mounting frame; 24. Rectangular notch; 25. Connecting vertical plate; 26. Electric push rod; 27. Clamping plate; 28. U-shaped fixing plate; 29. ​​Limiting roller; 30. Protective pad. 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] Reference Figure 1-6A generator excitation carbon brush replacement device comprises a mounting base 1, a vertical moving assembly is arranged on the top of the mounting base 1, a mobile mounting frame 9 is arranged on the top of the mounting base 1 through the vertical moving assembly, a lateral moving assembly is arranged inside the mobile mounting frame 9, a mobile plate 14 is arranged on the top of the mobile mounting frame 9 through the lateral moving assembly, a limiting sleeve 15 is fixedly arranged on the top of the mobile plate 14, the number of the limiting sleeves 15 is several, and the several limiting sleeves 15 are divided into two groups, and the two groups of limiting sleeves 15 are symmetrically distributed, multiple carbon brushes can be replaced at the same time through the several limiting sleeves 15, and the several limiting sleeves 15 are divided into two groups, so that the two groups of limiting sleeves 15 respectively drive the damaged carbon brushes to move out of the replacement position and put in new carbon brushes The brush moves to the replacement position, thereby reducing the time for replacing the carbon brush. When a group of limiting sleeves 15 removes the damaged carbon brush, a new carbon brush can be placed in another group of limiting sleeves 15, avoiding excessive time delay between removal and placement. An inverted U-shaped mounting frame 23 is fixedly provided on the top of the mounting base 1, and a rectangular notch 24 is penetrated through the top of the inverted U-shaped mounting frame 23. A carbon brush limiting assembly is provided on the top of the inverted U-shaped mounting frame 23. The vertical moving assembly includes a mounting vertical plate 2, which is fixedly installed on the top of the mounting base 1, and a driving motor 3 is fixedly provided on the rear side of the mounting vertical plate 2 on the rear side. A rotating shaft 4 is fixedly provided on the output end of the driving motor 3, and a worm sleeve 5 is fixedly provided on the surface of the rotating shaft 4. A worm wheel 6 is meshed on the surface of the worm sleeve 5. A rotating screw 7 is fixedly arranged inside the worm gear 6, and the rotating screw 7 is rotatably arranged inside the mounting base 1. The surface of the rotating screw 7 is threadedly arranged with an internal threaded tube 8, and the internal threaded tube 8 is fixedly installed at the bottom of the mobile mounting frame 9. The lateral moving component includes a fixed installation on the mobile mounting frame 9, and a mounting slide 16 is arranged through the top of the mobile mounting frame 9. A connecting slider 17 is slidably arranged inside the mounting slide 16. The connecting slider 17 is fixedly installed at the bottom of the mobile plate 14. The mounting slide 16 and the connecting slider 17 are both T-shaped structures. A fixed plate 10 on the rear side, a servo motor 11 is fixedly arranged on the rear side of the fixed plate 10, a connecting screw 12 is fixedly arranged on the output end of the servo motor 11, and a movable screw sleeve 13 is threadedly arranged on the surface of the connecting screw 12 A U-shaped mounting plate 18 is fixedly arranged on the top of the movable screw sleeve 13. The U-shaped mounting plate 18 is a U-shaped structure. A connecting slide groove is arranged on the top of the movable mounting frame 9. The top of the U-shaped mounting plate 18 is located inside the connecting slide groove. Through the connecting slide groove, the U-shaped mounting plate 18 can pass through the movable mounting frame 9, so as to facilitate the connection between the U-shaped mounting plate 18 and the movable plate 14. A position detection component is arranged inside the U-shaped mounting plate 18. The U-shaped mounting plate 18 is fixedly installed at the bottom of the movable plate 14. The driving motor 3 drives the rotating shaft 4 to drive the worm sleeve 5 to rotate, and the worm gear 6 meshing with it is driven to rotate through the worm sleeve 5, and the rotating screw 7 is driven to rotate inside the mounting base 1 through the worm gear 6, so that the internal threaded tube 8 pushes the movable mounting frame 9 to move.The movable installation frame 9 pushes the limiting sleeve 15 through the movable plate 14 to drive the carbon brush to move, so as to facilitate the removal of the damaged carbon brush and push the new carbon brush into the carbon brush holder. The servo motor 11 drives the connecting screw 12 to rotate, and the movable screw sleeve 13 drives the U-shaped installation plate 18 to move, so that the U-shaped installation plate 18 drives the movable plate 14 to move, so that the movable plate 14 drives the limiting sleeve 15 to move, so that the limiting sleeve 15 drives the carbon brush to move, and one group of limiting sleeves 15 drives the damaged carbon brush to move away from the replacement position, and the other group of limiting sleeves 15 drives the new carbon brush to move to the replacement position, thereby reducing the excessive time wasted between removing and putting in the carbon brush.

[0021] Specifically, the position detection component includes a mobile extrusion rod 19 and a pressure sensor 22. The mobile extrusion rod 19 is slidably arranged inside the U-shaped mounting plate 18. A rectangular metal plate 20 is fixedly arranged at the end of the mobile extrusion rod 19. A spring 21 is fixedly arranged on one side of the rectangular metal plate 20. The spring 21 is fixedly connected to the U-shaped mounting plate 18. There are two pressure sensors 22. The two pressure sensors 22 are respectively fixedly mounted on the front and rear side walls of the mobile mounting frame 9. When the U-shaped mounting plate 18 moves, the U-shaped mounting plate 18 will drive the spring 21 to move. The rectangular metal plate 20 and the movable extrusion rod 19 move, so that the movable extrusion rod 19 squeezes the detection end of the pressure sensor 22, and the rectangular metal plate 20 stretches the spring 21. As the U-shaped mounting plate 18 moves, the stretching amplitude of the spring 21 increases, so that the rebound force of the spring 21 increases, thereby increasing the thrust of the rectangular metal plate 20 on the movable extrusion rod 19, and increasing the pressure detected by the pressure sensor 22. When the set pressure value is reached, the servo motor 11 stops running, so that the limit sleeve 15 reaches the predetermined position.

[0022] Specifically, the carbon brush limiting assembly includes a connecting vertical plate 25, which is fixedly mounted on the top of the inverted U-shaped mounting frame 23. An electric push rod 26 is fixedly arranged on one side of the connecting vertical plate 25, and a clamping plate 27 is fixedly arranged on the output end of the electric push rod 26. A U-shaped fixing plate 28 and a protective pad 30 are fixedly arranged on the side of the clamping plate 27 away from the connecting vertical plate 25. A limiting roller 29 is rotatably arranged inside the U-shaped fixing plate 28. The output end is driven by the electric push rod 26 to drive the clamping plate 27 to move, so that the clamping plate 27 drives the U-shaped fixing plate 28 and the protective pad 30 to move, so that the U-shaped fixing plate 28 drives the limiting roller 29 to contact with the carbon brush holder, and then the protective pad 30 contacts with the carbon brush holder, thereby fixing the position of the carbon brush holder, which is convenient for subsequent replacement of the carbon brush. The limiting roller 29 can keep the damaged carbon brush vertically aligned with the limiting sleeve 15, thereby avoiding misalignment between the limiting sleeve 15 and the carbon brush.

[0023] When in use: the driving motor 3 drives the rotating shaft 4 to drive the worm sleeve 5 to rotate, and the worm sleeve 5 drives the worm wheel 6 meshing with it to rotate, and the worm wheel 6 drives the rotating screw 7 to rotate inside the mounting base 1, so that the internal threaded tube 8 pushes the movable mounting frame 9 to move upward, so that the movable mounting frame 9 pushes the limiting sleeve 15 to contact the carbon brush through the movable plate 14, and the bolts fixing the carbon brush wire are removed, and the driving motor 3 drives the worm sleeve 5 to reverse through the rotating shaft 4, so that the worm wheel 6 drives the rotating screw 7 to reverse, so that the internal threaded tube 8 drives the movable mounting frame 9 to move downward, and the movable mounting frame 9 is connected to the slider 1. 7 and the installation slide groove 16 drive the movable plate 14 to move downward, so that the limiting sleeve 15 drives the carbon brush to move downward, and then the servo motor 11 drives the connecting screw 12 to rotate, and the movable screw sleeve 13 drives the U-shaped mounting plate 18 to move, so that the U-shaped mounting plate 18 drives the movable plate 14 to move, so that the movable plate 14 drives the limiting sleeve 15 to move, so that the limiting sleeve 15 drives the carbon brush to move, one group of limiting sleeves 15 drives the damaged carbon brush to move away from the replacement position, and the other group of limiting sleeves 15 drives the new carbon brush to move to the replacement position, and then the new carbon brush is pushed into the replacement position, and the replacement of the carbon brush can be completed.

[0024] 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.

[0025] 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 carbon brush replacement device, comprising a mounting base (1), characterized in that: A vertical moving assembly is arranged on the top of the mounting base (1); a moving mounting frame (9) is arranged on the top of the mounting base (1) through the vertical moving assembly; a lateral moving assembly is arranged inside the moving mounting frame (9); a moving plate (14) is arranged on the top of the moving mounting frame (9) through the lateral moving assembly; a limiting sleeve (15) is fixedly arranged on the top of the moving plate (14); an inverted U-shaped mounting frame (23) is fixedly arranged on the top of the mounting base (1); a rectangular notch (24) is arranged through the top of the inverted U-shaped mounting frame (23); and a carbon brush limiting assembly is arranged on the top of the inverted U-shaped mounting frame (23).

2. A generator excitation carbon brush replacement device according to claim 1, characterized in that: The vertical moving assembly comprises a mounting vertical plate (2), wherein the mounting vertical plate (2) is fixedly mounted on the top of the mounting base (1), a driving motor (3) is fixedly arranged on the rear side of the mounting vertical plate (2), a rotating shaft (4) is fixedly arranged on the output end of the driving motor (3), a worm sleeve (5) is fixedly arranged on the surface of the rotating shaft (4), a worm gear (6) is meshedly arranged on the surface of the worm sleeve (5), a rotating screw (7) is fixedly arranged inside the worm gear (6), the rotating screw (7) is rotatably arranged inside the mounting base (1), an internally threaded tube (8) is threadedly arranged on the surface of the rotating screw (7), and the internally threaded tube (8) is fixedly mounted on the bottom of the movable mounting frame (9).

3. The generator excitation carbon brush replacement device according to claim 1, characterized in that: The lateral movement component comprises a fixed plate (10) fixedly mounted on the rear side of the mobile mounting frame (9); a servo motor (11) is fixedly mounted on the rear side of the fixed plate (10); a connecting screw (12) is fixedly mounted on the output end of the servo motor (11); a moving screw sleeve (13) is threadedly mounted on the surface of the connecting screw (12); a U-shaped mounting plate (18) is fixedly mounted on the top of the moving screw sleeve (13); a position detection component is arranged inside the U-shaped mounting plate (18); and the U-shaped mounting plate (18) is fixedly mounted on the bottom of the mobile plate (14).

4. A generator excitation carbon brush replacement device according to claim 3, characterized in that: The position detection component comprises a movable extrusion rod (19) and a pressure sensor (22); the movable extrusion rod (19) is slidably arranged inside a U-shaped mounting plate (18); a rectangular metal plate (20) is fixedly arranged at the end of the movable extrusion rod (19); a spring (21) is fixedly arranged on one side of the rectangular metal plate (20); the spring (21) is fixedly connected to the U-shaped mounting plate (18); and there are two pressure sensors (22), which are respectively fixedly mounted on the front and rear side walls of the movable mounting frame (9).

5. The generator excitation carbon brush replacement device according to claim 1, characterized in that: The carbon brush limiting assembly comprises a connecting vertical plate (25), wherein the connecting vertical plate (25) is fixedly mounted on the top of an inverted U-shaped mounting frame (23), an electric push rod (26) is fixedly arranged on one side of the connecting vertical plate (25), a clamping plate (27) is fixedly arranged on the output end of the electric push rod (26), a U-shaped fixing plate (28) and a protective pad (30) are fixedly arranged on the side of the clamping plate (27) away from the connecting vertical plate (25), and a limiting roller (29) is rotatably arranged inside the U-shaped fixing plate (28).

6. The generator excitation carbon brush replacement device according to claim 1, characterized in that: The top of the movable installation frame (9) is provided with an installation slot (16) penetrating therethrough, a connecting slider (17) is slidably provided inside the installation slot (16), the connecting slider (17) is fixedly mounted on the bottom of the movable plate (14), and the installation slot (16) and the connecting slider (17) are both T-shaped structures.

7. The generator excitation carbon brush replacement device according to claim 1, characterized in that: The number of the limiting sleeves (15) is a plurality, and the plurality of limiting sleeves (15) are divided into two groups, and the two groups of limiting sleeves (15) are symmetrically distributed.

8. The generator excitation carbon brush replacement device according to claim 3, characterized in that: The U-shaped mounting plate (18) is in a U-shaped structure, a connecting slide groove is provided through the top of the movable mounting frame (9), and the top end of the U-shaped mounting plate (18) is located inside the connecting slide groove.

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