Brush holder and collector ring gap adjusting device and use method thereof

Abstract

The invention relates to the technical field of power generation equipment, in particular to a brush holder and collecting ring gap adjusting device and a using method thereof, and the device comprises a connecting assembly, a universal adjusting sliding table and an adjusting baffle plate; the connecting assembly is arranged at the lower end of the universal adjusting sliding table and is configured to be matched with the surface of the brush carrier on the outer side of the collecting ring, the adjusting baffle is arranged at the upper end of the universal adjusting sliding table and is configured to be matched with the brush holder base, and the universal adjusting sliding table is composed of multiple layers of sliding tables and is configured to be at least used for adjusting displacement, circumferential direction and inclination of the adjusting baffle at the upper end of the universal adjusting sliding table. Adjustment is carried out by pushing and pulling the brush holder base, the disassembly and assembly procedures are reduced, the working efficiency is improved, in addition, the device does not need to be inserted into the gap between the collecting ring and the brush holder, the risk of damage to the collecting ring is avoided, the universal adjusting sliding table can provide higher adjusting precision, then accurate adjustment of the gap value is achieved, and the service life of the brush holder is prolonged. And the device also has an angle adjusting function, so that the carbon brush can be completely attached to the arc surface of the collector ring, and the optimal contact effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation equipment, and in particular to a device for adjusting the gap between a brush holder and a slip ring and a method for using the device. Background Art

[0002] The brush holder is the fixing part of the generator carbon brush. It is subjected to unilateral force during long-term operation. Some brush holders will become loose and offset due to the vibration of the generator operation. The offset brush holder will cause obstruction at the edge of the carbon brush, which will increase the contact resistance with the collector ring to a certain extent, thereby increasing the heat generation, and further adversely affecting the collector ring; in addition, when the gap between the brush holder and the collector ring is too small, friction and sparking may occur between the brush holder and the collector ring, resulting in damage to the collector ring surface; if the gap is too large, the carbon brush and the collector ring may have poor contact, resulting in problems such as wear of the carbon brush bevel, sparking, and abnormal temperature increase, which will endanger the safe and stable operation of the generator. Therefore, during the maintenance of the hydro-turbine generator set, the gap between the brush holder and the collector ring needs to be adjusted.

[0003] The patent with publication number CN220934989U provides a tool for adjusting the gap between the slip ring and the brush holder of a generator motor, and specifically discloses that when using the tool, first check the gap between the slip ring and the brush holder, and after pulling out the carbon brush, insert the special tool from top to bottom between the slip ring and the brush holder, and then adjust the gap between the slip ring and the brush holder. After adjustment, pull out the tool; for example, the patent with publication number CN218070506U provides a tool for adjusting the gap between the brush holder and the collector ring, and specifically discloses that when in use, put the brush holder into the brush holder fixing base, and then insert either end of the tool between the collector ring and the brush holder, and slowly push the brush holder forward together with the base. When the edge of the brush holder touches the edge of the baffle, fix the brush holder base, and then take out the tool. Although the above-mentioned existing technology can improve work efficiency and adjustment accuracy, it still has the following defects: (1) When in use, the carbon brush needs to be removed from the brush holder, and then the brush holder is installed back on the brush holder fixed base, and then the device is inserted into the gap between the collector ring and the brush holder for adjustment, which increases the disassembly and assembly process; (2) When in use, it needs to be inserted into the gap between the collector ring and the brush holder, and the two sides need to be pressed tightly together to complete the adjustment. This method will inevitably cause friction between the adjustment device and the collector ring surface, which may cause damage to the collector ring surface; (3) The tool has a fixed thickness. Even if the baffle can be stacked, it can only be adjusted with an accuracy of 1mm, and the gap value between the collector ring and the brush holder cannot be adjusted at will; (4) There is no angle adjustment function. After adjustment, the carbon brush angle may be offset, so that the contact area of the carbon brush does not meet the use requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a brush holder and collector ring gap adjustment device and its use method, which is adjusted by pushing and pulling the brush holder base from the side and rear, reducing the process of disassembling and assembling carbon brushes and brush holders, and improving work efficiency. In addition, the device does not need to be inserted into the gap between the collector ring and the brush holder, avoiding the risk of damage to the collector ring. The universal adjustment slide can provide higher adjustment accuracy, thereby realizing precise adjustment of the gap value, and the universal adjustment slide has an angle adjustment function, which can make the carbon brush and the collector ring arc surface fully fit together to achieve the best contact effect, so as to solve the problems pointed out in the background technology.

[0005] The present invention is achieved through the following technical solutions: a brush holder and slip ring gap adjustment device, comprising a connecting assembly, a universal adjustment slide, and an adjustment baffle;

[0006] Among them, the connecting assembly is arranged at the lower end of the universal adjustment slide and is configured to cooperate with the brush holder surface outside the collector ring. The adjustment baffle is arranged at the upper end of the universal adjustment slide and is configured to cooperate with the brush holder base. The universal adjustment slide is composed of a multi-layer slide and is configured to be used for the upper end adjustment baffle to achieve displacement, circumference and inclination adjustment.

[0007] According to a preferred embodiment, the universal adjustment slide includes a linear slide, a first rotary slide and a second rotary slide. The linear slide is used to achieve displacement adjustment, the first rotary slide is used to achieve working surface inclination adjustment, and the second rotary slide is used to achieve circumferential angle adjustment.

[0008] According to a preferred embodiment, both the linear slide and the first rotary slide have a screw adjustment mechanism.

[0009] According to a preferred embodiment, the adjusting end of the screw adjusting mechanism and the side surface of the second rotary slide are both provided with scales.

[0010] According to a preferred embodiment, the connecting assembly has a magnetic member.

[0011] According to a preferred embodiment, the magnetic member is a strong magnet, and the connecting assembly further includes an anti-slip pad, which is provided at the lower end of the strong magnet.

[0012] According to a preferred embodiment, the adjustment baffle has a first plate surface connected to the universal adjustment slide and a second plate surface vertically connected to the outside of the first plate surface, the first plate surface is parallel to the brush holder surface, and the second plate surface is perpendicular to the brush holder surface and cooperates with the brush holder base.

[0013] The present invention also provides a method for using the brush holder and slip ring gap adjustment device as described above, comprising the following steps:

[0014] Place the device on the brush holder, and fit the adjustment baffle to the side of the brush holder base facing away from the slip ring, and fit the brush holder to the side of the brush holder base facing the slip ring;

[0015] Measure the actual gap between the brush holder and the collector ring, loosen the bolts connecting the brush holder base and the brush holder, and remove the brush holder base;

[0016] The universal adjustment slide is adjusted based on the difference between the actual gap value and the standard gap value, and after the adjustment is completed, the brush holder base is attached to the side of the adjustment baffle facing the slip ring so that the carbon brush is completely attached to the arc surface of the slip ring;

[0017] Secure the brush holder base with bolts and remove the device after securing.

[0018] The technical solution of a brush holder and collector ring gap adjustment device and its use method provided by the present invention has at least the following advantages and beneficial effects: (1) The device reduces the process of disassembling and assembling carbon brushes and brush holders during use, thereby improving work efficiency; (2) The device is adjusted by pushing and pulling the brush holder base at the side and rear through a universal adjustment slide, without inserting the collector ring and the brush holder gap, thereby avoiding the risk of collector ring damage; (3) The device uses a universal adjustment slide to provide higher adjustment accuracy, thereby achieving precise adjustment of the gap value to meet the gap adjustment requirements of different generators; (4) The universal adjustment slide has an angle adjustment function, which can make the carbon brush and the collector ring arc surface fully fit together to achieve the best contact effect; (5) The connecting component is adsorbed on the brush holder by magnetic attraction, and there is no need to hold it by hand, and the device can be used on both the upper ring and the lower ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of the brush holder and slip ring gap adjustment device provided in Example 1 of the present invention;

[0020] Figure 2 A schematic diagram of gap adjustment provided in Example 1 of the present invention;

[0021] Figure markings: 100-connecting assembly, 110-strong magnet, 120-anti-slip pad, 200-universal adjustment slide, 210-linear slide, 220-first rotary slide, 230-second rotary slide, 300-adjustment baffle, 310-first plate surface, 320-second plate surface, 400-brush holder base, 500-brush holder, 510-bolt, 600-collector ring. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Example 1

[0024] See also Figure 1 and Figure 2 As shown, this embodiment provides a brush holder and slip ring gap adjustment device, which includes a connecting assembly 100, a universal adjustment slide 200 and an adjustment baffle 300.

[0025] In some embodiments, the connecting assembly 100 is disposed at the lower end of the universal adjustment slide 200 and is configured to cooperate with the surface of the brush holder 500 on the outside of the collector ring 600. The cooperation method can be nesting, pressing, snapping, bonding, threaded connection, magnetic attraction, etc., and there is no specific restriction here; after the device is placed as a whole on the brush holder 500, the device can be firmly fixed on the brush holder 500 through the connecting assembly 100, which facilitates subsequent gap adjustment work.

[0026] The adjustment baffle 300 is arranged at the upper end of the universal adjustment slide 200 as a component connected to the brush holder base 400. In this embodiment, the adjustment baffle 300 is configured to cooperate with the brush holder base 400. The cooperation method can be nesting, pressing, snapping, bonding, threaded connection, magnetic attraction, etc., and there is no specific restriction here.

[0027] The universal adjustment slide 200 is composed of a multi-layer slide and is configured to adjust the baffle 300 at its upper end to achieve displacement, circumferential and inclination adjustments.

[0028] Specifically, this embodiment uses the method of pushing and pulling the brush holder base 400 from the side and rear for adjustment, which reduces the process of disassembling and assembling the carbon brushes and brush holders and improves work efficiency. In addition, the device does not need to be inserted into the gap between the collector ring 600 and the brush holder, avoiding the risk of damage to the collector ring 600. The universal adjustment slide 200 can provide higher adjustment accuracy, thereby realizing precise adjustment of the gap value, and the universal adjustment slide 200 has an angle adjustment function, which can make the carbon brush and the arc surface of the collector ring 600 fit completely to achieve the best contact effect.

[0029] Example 2

[0030] This embodiment is based on the technical solution provided in Example 1 and further describes the structure of the universal adjustment slide 200:

[0031] In this embodiment, the universal adjustment slide 200 includes a linear slide 210, a first rotary slide 220 and a second rotary slide 230. The linear slide 210 is used to achieve displacement adjustment, the first rotary slide 220 is used to achieve working surface inclination adjustment, and the second rotary slide 230 is used to achieve circumferential angle adjustment.

[0032] In some embodiments, both the linear slide 210 and the first rotary slide 220 have a screw adjustment mechanism.

[0033] Among them, the linear slide 210 is composed of a first base, a transmission slider and a cover plate. The top of the first base is provided with a first through hole along the X-axis direction, and a first bearing is provided in the first through hole. The screw adjustment mechanism configured on the linear slide 210 has a first screw. The threaded end of the first screw passes through the bearing and extends into the linear slide 210. The outer diameter of the first bearing is interference fit with the first through hole, and the inner diameter is interference fit with the threaded end of the first screw. The transmission slider is threadedly fitted with the threaded end of the first screw, the bottom of the transmission slider abuts against the first base, and the top of the transmission slider is fixedly connected to the cover plate. By rotating the adjustment end of the screw adjustment mechanism located on the outside of the linear slide 210, the transmission slider can be moved left and right. The adjustment end of the screw adjustment mechanism is marked with a size scale for aligning and judging the movement distance of the cover plate. In addition, it also includes a countersunk screw, which is used to connect the cover plate and the transmission slider. When the transmission slider moves under the rotation of the first screw, it drives the movement of the cover plate.

[0034] The first rotary slide 220 consists of a support base, a gear base, and a gear plate. The top of the gear plate is fixedly connected to the gear base. The top of the support base has a second through-hole along the X-axis, which houses a second bearing. The gear plate is rotatably connected to the support base via a pin that rotates on the second bearing. The support base also has a third through-hole below the second through-hole, which houses a third bearing. The screw adjustment mechanism configured on the first rotary slide 220 includes a second screw, the threaded section of which passes through the third bearing and whose threaded end engages the gear plate. Specifically, when the adjustment end of the second screw is rotated, the gear base rotates accordingly, thereby achieving inclination adjustment.

[0035] The second rotating platform 230 consists of a second base and a circular disc. The disc consists of three layers: upper, middle, and lower. A groove is defined at the top of the second base, corresponding to the middle layer. A fourth bearing is located within the groove, and the lower layer rotates in conjunction with the fourth bearing. Specifically, when the disc is rotated, it rotates along the fourth bearing, achieving circumferential motion and thus adjusting the circumferential angle. A scale is also marked on one side of the second base to indicate the rotation angle.

[0036] Specifically, the universal adjustment slide 200 provided in this embodiment can support the adjustment of multiple displacements, multiple angles and working surface inclinations. Compared with the existing slide based on the top-pushing method, this embodiment can achieve higher angle adjustment accuracy, greater wear resistance and longer service life; in addition, each slide can be detachably connected and can be used separately or in combination. The combination method is flexible and changeable, and has strong flexibility.

[0037] Example 3

[0038] This embodiment further describes the structure of the connection assembly 100 based on the technical solution provided in any one of Embodiments 1 to 2.

[0039] In this embodiment, the connecting assembly 100 has a magnetic member. In some embodiments, the magnetic member is a strong magnet 110, and the strong magnet 110 adsorbs the brush holder 500 to achieve fixation after the device is placed, thereby eliminating the need to hold the device in hand.

[0040] Furthermore, the connecting component 100 also includes an anti-slip pad 120, which is arranged at the lower end of the strong magnet 110. The anti-slip pad 120 can be made of rubber material to buffer the strong magnet 110 and prevent the strong magnet 110 from directly contacting the brush holder 500. By configuring the anti-slip pad 120, on the one hand, it can prevent the strong magnet 110 from directly contacting the brush holder 500 and causing damage to the brush holder 500. On the other hand, it can also facilitate the removal of the device from the brush holder 500 after the gap is adjusted. It is worth mentioning that, relying on the magnetic connecting component 100, in addition to being used for adjusting the brush holder gap at the upper ring, this device can also be used for adjusting the brush holder gap at the lower ring, which expands the scope of application of the device.

[0041] Example 4

[0042] This embodiment is based on the technical solution provided in any one of Embodiments 1 to 2, and further describes the structure of the adjustment baffle 300:

[0043] In this embodiment, the adjustment baffle 300 has a first plate surface 310 connected to the universal adjustment slide 200 and a second plate surface 320 vertically connected to the outside of the first plate surface 310. The overall shape is "L". The first plate surface 310 is parallel to the surface of the brush holder 500, and the second plate surface 320 is perpendicular to the surface of the brush holder 500 and cooperates with the brush holder base 400.

[0044] Example 5

[0045] This embodiment, based on the technical solution provided in any one of Examples 1 to 4, provides a method for using the brush holder and slip ring gap adjustment device as in any one of Examples 1 to 4, including the following steps:

[0046] Place the device on the brush holder 500, and fit the adjustment baffle 300 to the side of the brush holder base 400 facing away from the slip ring 600, and fit the brush holder to the side of the brush holder base 400 facing the slip ring 600; measure the actual gap value between the brush holder and the slip ring 600, and loosen the bolts 510 connecting the brush holder base 400 and the brush holder 500, and remove the brush holder base 400; adjust the universal adjustment slide 200 based on the difference between the actual gap value and the standard gap value, and after the adjustment is completed, fit the brush holder base 400 to the side of the adjustment baffle 300 facing the slip ring 600, so that the carbon brush is completely fitted with the arc surface of the slip ring 600; fix the brush holder base 400 with the bolts 510, and remove the device after fixing.

[0047] In some embodiments, the actual gap value can also be obtained by optical means, such as laser ranging, etc., and a laser emitter can be optionally arranged on the side of the second plate 320 facing the brush holder base 400, and the gap values of multiple points are obtained by multiple laser emitters, which are used as a reference for the linear displacement, axial and inclination adjustment of the universal adjustment slide 200 in the gap adjustment link. The obtained gap value can be displayed in real time, for example, a display screen is configured on the first plate 310 to display the gap value of each point in real time; it is worth mentioning that due to the small space in the slip ring room, the configured optical components should be micro components.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A brush holder and slip ring gap adjustment device, characterized in that: It comprises a connecting assembly (100), a universal adjustment slide (200) and an adjustment baffle (300); The connecting assembly (100) is provided at the lower end of the universal adjustment slide (200) and is configured to cooperate with the surface of the brush holder (500) outside the collector ring (600); the adjusting baffle (300) is provided at the upper end of the universal adjustment slide (200) and is configured to cooperate with the brush holder base (400); the universal adjustment slide (200) is composed of a multi-layer slide and is configured to adjust the upper end adjusting baffle (300) to achieve displacement, circumferential and inclination adjustment.

2. The brush holder and slip ring gap adjustment device according to claim 1, characterized in that: The universal adjustment slide (200) comprises a linear slide (210), a first rotary slide (220) and a second rotary slide (230), wherein the linear slide (210) is used to realize displacement adjustment, the first rotary slide (220) is used to realize working surface inclination adjustment, and the second rotary slide (230) is used to realize circumferential angle adjustment.

3. The brush holder and slip ring gap adjustment device according to claim 2, characterized in that: The linear slide (210) and the first rotary slide (220) both have screw adjustment mechanisms.

4. The brush holder and slip ring gap adjustment device according to claim 3, characterized in that: The adjusting end of the screw adjusting mechanism and the side surface of the second rotary slide (230) are both provided with scales.

5. The brush holder and slip ring gap adjustment device according to any one of claims 1 to 4, characterized in that: The connecting assembly (100) has a magnetic member.

6. The brush holder and slip ring gap adjustment device according to claim 5, characterized in that: The magnetic component is a strong magnet (110), and the connecting assembly (100) further comprises an anti-slip pad (120), wherein the anti-slip pad (120) is arranged at the lower end of the strong magnet (110).

7. The brush holder and slip ring gap adjustment device according to any one of claims 1 to 4, characterized in that: The adjustment baffle (300) comprises a first plate surface (310) connected to the universal adjustment slide (200) and a second plate surface (320) vertically connected to the outside of the first plate surface (310); the first plate surface (310) is parallel to the surface of the brush holder (500); and the second plate surface (320) is perpendicular to the surface of the brush holder (500) and cooperates with the brush holder base (400).

8. A method for using the brush holder and slip ring gap adjustment device according to any one of claims 1 to 7, comprising the following steps: The device is placed on the brush holder (500), and the adjustment baffle (300) is attached to the side of the brush holder base (400) facing away from the slip ring (600), and the brush holder is attached to the side of the brush holder base (400) facing the slip ring (600); Measure the actual gap value between the brush holder and the collector ring (600), loosen the bolts (510) connecting the brush holder base (400) and the brush holder (500), and remove the brush holder base (400); The universal adjustment slide (200) is adjusted based on the difference between the actual gap value and the standard gap value, and after the adjustment is completed, the brush holder base (400) is attached to the side of the adjustment baffle (300) facing the collector ring (600), so that the carbon brush is completely attached to the arc surface of the collector ring (600); The brush holder base (400) is fixed by means of bolts (510), and the device is removed after the fixing is completed.

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