AC synchronous motor carbon brush polishing device

Abstract

The invention relates to an AC synchronous motor carbon brush polishing device, and belongs to the technical field of metallurgical maintenance equipment. According to the technical scheme, a carbon brush (10) is arranged in a carbon brush groove (8), a nylon cambered surface conduction row (3) is arranged at the bottom of a door-shaped frame, the part, penetrating into the door-shaped frame, of an abrasive belt (11) is placed on the nylon cambered surface conduction row (3), and the bottom of the carbon brush (10) makes contact with the abrasive belt (11); the door-shaped frame is placed on the carbon brush slip ring, and the nylon cambered surface conduction row (3) lifts the abrasive belt (11) to arch up to form the same radian as the carbon brush slip ring. The carbon brush polishing device has the beneficial effects that the bottom surface of a new carbon brush can be polished according to the contact slip ring radian of a use part, the application range is wide, the contact area of the carbon brush and the slip ring is increased, and slip ring abrasion and motor faults caused by the carbon brush problem are avoided.

Description

Technical Field

[0001] This invention relates to an AC synchronous motor carbon brush grinding device, belonging to the technical field of metallurgical maintenance equipment. Background Technology

[0002] AC synchronous motors are widely used at Hebei Iron and Steel Chengde Steel. Carbon brushes are an important component of AC synchronous motors. The number of carbon brushes in each motor varies from a dozen to several dozen depending on the power. Carbon brushes are consumables and should be replaced when one-third of their length has been worn down. New carbon brushes have a flat bottom surface and contact the arc surface of the slip ring. The arc surface of the contact slip ring is different for different motor models. Incomplete contact between newly installed carbon brushes and slip rings often leads to arcing, damaging the slip ring, or even short circuits that damage the motor. Summary of the Invention

[0003] The purpose of this invention is to provide an AC synchronous motor carbon brush polishing device. By using a nylon arc-shaped conductive strip to support the sanding belt and arch it to form the same arc as the carbon brush slip ring, the bottom surface of the new carbon brush can be polished according to the arc of the contact slip ring at the point of use. It has a wide range of applications, increases the contact area between the carbon brush and the slip ring, avoids slip ring wear and motor failures caused by carbon brush problems, and effectively solves the above-mentioned problems existing in the background art.

[0004] The technical solution of the present invention is: an AC synchronous motor carbon brush grinding device, comprising a gantry frame, a nylon arc-shaped conductive strip, a sanding belt receiving wheel, a sanding belt leading wheel, a slide rail, a carbon brush groove, a carbon brush, and a sanding belt. The slide rail and the carbon brush groove are disposed inside the gantry frame, and the carbon brush groove is slidably connected to the slide rail, with the carbon brush placed in the carbon brush groove. The nylon arc-shaped conductive strip is disposed at the bottom of the gantry frame, and the sanding belt receiving wheel and the sanding belt leading wheel are respectively disposed on the outer sides of the gantry frame. The sanding belt passes through the sanding belt receiving wheel and the sanding belt leading wheel at the bottom of the gantry frame, with the portion of the sanding belt passing through the gantry frame resting on the nylon arc-shaped conductive strip, and the bottom of the carbon brush contacting the sanding belt. The gantry frame is placed on the carbon brush slip ring, and the nylon arc-shaped conductive strip supports the sanding belt, arching it to form the same arc as the carbon brush slip ring.

[0005] The portal frame includes main columns, secondary columns, and a top beam, with the main columns and secondary columns arranged in parallel. The top of the main column is provided with a main column top beam groove, and the rear end of the top beam is provided with a top beam pivot, which is installed in the main column top beam groove, allowing the top beam to rotate. The top of the secondary column is provided with a secondary column top beam groove, and the front end of the top beam is provided with a top beam locking block, which is placed in the secondary column top beam groove. A top beam handle is provided above the middle of the top beam.

[0006] The main column and the secondary column are symmetrically provided with abrasive belt guides on the outer side of their lower edges. The abrasive belt shaft is rotatably installed on the bottom of the main column and the secondary column through the abrasive belt shaft mounting side plate. The abrasive belt is wound into the abrasive belt receiving wheel, and one end is led out and passed through the abrasive belt guide of the secondary column and the abrasive belt shaft of the secondary column in sequence before being placed on the nylon arc surface conduction row. Then it passes through the abrasive belt shaft of the main column and the abrasive belt guide of the main column in sequence before being fixed in the abrasive belt lead-out wheel.

[0007] The nylon arc-shaped conductive strip is composed of one or more nylon blocks with gaps between them. The bottom is connected by a whole nylon sheet. The bottom of the two sanding belt shaft mounting side plates is connected to the sanding belt shaft base plate. The two ends of the whole nylon sheet are respectively fixed to the two sanding belt shaft base plates.

[0008] It also includes the main body of the lock, with a lock buckle on the top of the main body. The upper part of the lock buckle is curved and the lower part is flat. The entire lock is fixed to the outer side of the top of the secondary column by the lock base, and its lock buckle can press the top beam lock block at the front end of the top beam.

[0009] The sanding belt collecting wheel has a raised edge structure. The sanding belt collecting wheel mounting base is installed on the outside of the sub-column. The central shaft of the sanding belt collecting wheel passes through the center of the sanding belt collecting wheel, and both ends are fixed in the central shaft fixing holes of the sanding belt collecting wheel mounting base. The sanding belt collecting wheel return spring is wound around the central shaft of the sanding belt collecting wheel, with one end fixed to the central shaft of the sanding belt collecting wheel and the other end fixed to the sanding belt collecting wheel. The sanding belt collecting wheel return spring always remains under force.

[0010] The abrasive belt pull-out wheel has a central shaft at both ends. The central shaft is rotatably mounted on the abrasive belt pull-out wheel mounting base, which is installed on the outside of the main column. The longer end of the central shaft is equipped with a gear-shaped abrasive belt pull-out wheel with one side being straight and the other side being curved. The mounting base is equipped with a gear baffle base. A gear baffle block is installed at the lower part of the gear baffle base, and a gear baffle is rotatably mounted at the front end. The rear of the gear baffle is blocked by the gear baffle block, so it can only be lifted forward.

[0011] The slide is a concave structure with slide baffles at both ends. The center of the slide baffle has a positioning threaded rod mounting screw hole. The positioning threaded rod is placed in the positioning threaded rod mounting screw hole, and a positioning threaded rod adjusting wheel is provided at the outer end of the slide. A carbon brush groove pulley baffle is provided on the positioning threaded rod at the inner end of the slide, and a carbon brush groove pulley anti-collision block is provided at the center of the carbon brush groove pulley baffle. The carbon brush groove is provided with carbon brush groove pulley shafts at both ends near the middle of the slide rail side. The front end of the carbon brush groove pulley shaft is provided with a carbon brush groove pulley. The carbon brush groove pulley is placed in the slide rail groove. There are two carbon brush groove pulleys. It also includes a carbon brush slot moving handle, which is fixed to the center of the carbon brush slot surface adjacent to the carbon brush slot pulley shaft via a carbon brush slot moving handle connecting rod.

[0012] It also includes a carbon brush holder, which is fixed to one side of the carbon brush groove by a carbon brush holder bracket, and the carbon brush holder presses the carbon brush inside the carbon brush groove.

[0013] The beneficial effects of this invention are: by using a nylon arc-shaped conductive strip to support the sanding belt and arch it up, forming the same arc as the carbon brush slip ring, the bottom surface of the new carbon brush can be ground according to the arc of the contact slip ring at the point of use. This has a wide range of applications, increases the contact area between the carbon brush and the slip ring, and avoids slip ring wear and motor failures caused by carbon brush problems. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the portal frame structure of the present invention; Figure 3 This is an exploded view of the bottom of the column of the present invention; Figure 4 This is an overall and exploded schematic diagram of the sanding belt storage wheel of the present invention; Figure 5 This is an overall and exploded schematic diagram of the abrasive belt lead-out wheel of the present invention; Figure 6 This is an exploded view of the lead-out wheel and wheel baffle of the present invention; Figure 7 This is an exploded view of the slide rail of the present invention; Figure 8 This is a schematic diagram of the overall structure of the carbon brush groove and carbon brush pressing sheet of the present invention; Figure 9 This is an exploded view of the overall structure of the carbon brush groove and carbon brush pressing sheet of the present invention; In the diagram: Main column 1, main column top beam groove 1-1, secondary column 1-2, secondary column top beam groove 1-2-1, sanding belt guide 1-3, sanding belt shaft mounting side plate 1-4, sanding belt shaft bearing mounting hole 1-4-1, sanding belt shaft bottom plate 1-5, sanding belt shaft bearing 1-6, sanding belt shaft 1-7, sanding belt shaft mounting column 1-7-1, top beam 2, top beam locking block 2-1, top beam rotating shaft 2-2, top beam handle 2-3, nylon 3. Dragon arc surface conduction row; 4. Lock body; 5. Sanding belt collection wheel; 5-1. Sanding belt collection wheel central shaft; 5-2. Sanding belt collection wheel return spring; 5-3. Sanding belt collection wheel mounting base; 5-3-1. Sanding belt collection wheel central shaft fixing hole; 6. Sanding belt lead-out wheel; 6-1. Sanding belt lead-out wheel central shaft; 6-2. Sanding belt lead-out wheel dial wheel; 6-3. Dial wheel baffle base; 6-3-1. Dial wheel baffle block; 6-3-2. Dial wheel baffle mounting bracket. 2. Dial wheel baffle mounting through hole 6-3-3, dial wheel baffle 6-3-4, dial wheel baffle shaft 6-3-5, sanding belt lead-out wheel mounting base 6-4, sanding belt lead-out wheel bearing mounting through hole 6-4-1, slide rail 7, slide rail baffle 7-1, positioning threaded rod mounting screw hole 7-1-1, positioning threaded rod 7-2, positioning threaded rod adjusting wheel 7-3, carbon brush groove pulley baffle 7-4, carbon brush groove pulley anti-collision block 7-5, Carbon brush groove; 8, Carbon brush groove pulley shaft; 8-1, Carbon brush groove pulley; 8-2, Carbon brush groove moving handle; 8-3, Carbon brush groove moving handle connecting rod; 8-3-1, Carbon brush pressing bracket storage groove; 8-4, Carbon brush pressing bracket positioning post; 8-4-1, Carbon brush pressing bracket fixing groove; 8-4-2, Carbon brush pressing bracket; 9, Carbon brush pressing bracket fixing block; 9-1, Carbon brush pressing; 9-2, Carbon brush; 10, Sanding belt; 11. Detailed Implementation

[0015] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0016] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0017] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0018] A carbon brush polishing device for an AC synchronous motor includes a gantry frame, a nylon curved surface conduction strip 3, a sanding belt receiving wheel 5, a sanding belt lead-out wheel 6, a slide rail 7, a carbon brush groove 8, a carbon brush 10, and a sanding belt 11. The slide rail 7 and the carbon brush groove 8 are disposed inside the gantry frame, with the carbon brush groove 8 slidably connected to the slide rail 7, and the carbon brush 10 placed in the carbon brush groove 8. The nylon curved surface conduction strip 3 is disposed at the bottom of the gantry frame, and the sanding belt receiving wheel 5 and the sanding belt lead-out wheel 6 are respectively disposed on the outer sides of the gantry frame. The sanding belt 11 is inserted into the bottom of the gantry frame through the sanding belt receiving wheel 5 and the sanding belt lead-out wheel 6, with the portion of the sanding belt 11 inserted into the gantry frame resting on the nylon curved surface conduction strip 3, and the bottom of the carbon brush 10 contacting the sanding belt 11. The gantry frame is placed on the carbon brush slip ring, and the nylon curved surface conduction strip 3 supports the sanding belt 11, arching it to form the same curvature as the carbon brush slip ring.

[0019] The portal frame includes a main column 1, a secondary column 1-2, and a top beam 2, with the main column 1 and the secondary column 1-2 arranged in parallel. The top of the main column 1 is provided with a main column top beam groove 1-1, and the rear end of the top beam 2 is provided with a top beam pivot 2-2, which is installed in the main column top beam groove 1-1, allowing the top beam 2 to rotate. The top of the secondary column 1-2 is provided with a secondary column top beam groove 1-2-1, and the front end of the top beam 2 is provided with a top beam locking block 2-1, which is placed in the secondary column top beam groove 1-2-1. A top beam handle 2-3 is provided above the middle of the top beam 2.

[0020] The main column 1 and the auxiliary column 1-2 are symmetrically provided with abrasive belt guides 1-3 on the outer side of their lower edges. The abrasive belt shaft 1-7 is rotatably installed on the bottom of the main column 1 and the auxiliary column 1-2 through the abrasive belt shaft mounting side plate 1-4. The abrasive belt 11 is wound into the abrasive belt receiving wheel 5, and one end is led out and passed through the abrasive belt guide 1-3 of the auxiliary column 1-2 and the abrasive belt shaft 1-7 of the auxiliary column 1-2 in sequence, and then placed on the nylon arc surface conduction row 3. After that, it passes through the abrasive belt shaft 1-7 of the main column 1 and the abrasive belt guide 1-3 of the main column in sequence and is fixed in the abrasive belt lead-out wheel 6.

[0021] The nylon arc-shaped conductive strip 3 is composed of one or more nylon blocks with gaps between them. The bottom is connected by a whole nylon sheet. The bottom of the two sanding belt shaft mounting side plates 1-4 is connected to the sanding belt shaft base plate 1-5. The two ends of the whole nylon sheet are respectively fixed on the two sanding belt shaft base plates 1-5.

[0022] It also includes a lock body 4, with a lock buckle on the top of the lock body. The upper part of the lock buckle is curved and the lower part is flat. The entire lock is fixed to the outer side of the top of the secondary column through the lock base, and its lock buckle can press the top beam lock block 2-1 at the front end of the top beam 2.

[0023] The sanding belt collecting wheel 5 has a raised edge structure. The sanding belt collecting wheel mounting base 5-3 is installed on the outside of the auxiliary column 1-2. The sanding belt collecting wheel central shaft 5-1 passes through the center of the sanding belt collecting wheel 5, and both ends are fixed in the sanding belt collecting wheel central shaft fixing holes 5-3-1 of the sanding belt collecting wheel mounting base 5-3. The sanding belt collecting wheel return spring 5-2 is wound around the sanding belt collecting wheel central shaft 5-1, with one end fixed on the sanding belt collecting wheel central shaft 5-1 and the other end fixed on the sanding belt collecting wheel 5. The sanding belt collecting wheel return spring 5-2 always remains under force.

[0024] The sanding belt puller 6 has a central shaft 6-1 at both ends. The central shaft 6-1 is rotatably mounted on the sanding belt puller mounting base 6-4, which is mounted on the outside of the main column 1. The longer end of the central shaft 6-1 has a sanding belt puller dial 6-2, which is gear-shaped with one side being straight and the other side being curved. The sanding belt puller mounting base 6-4 has a dial baffle base 6-3. A dial baffle block 6-3-1 is installed at the lower part of the dial baffle base 6-3, and a dial baffle 6-3-4 is rotatably mounted at the front end. The rear of the dial baffle 6-3-4 is blocked by the dial baffle block 6-3-1, so it can only be lifted forward.

[0025] The slide rail 7 has a concave structure with slide rail baffles 7-1 at both ends. The center of the slide rail baffle 7-1 has a positioning threaded rod mounting screw hole 7-1-1. The positioning threaded rod 7-2 is placed in the positioning threaded rod mounting screw hole 7-1-1, and a positioning threaded rod adjusting wheel 7-3 is provided at the outer end of the slide rail 7. A carbon brush groove pulley baffle 7-4 is provided on the positioning threaded rod 7-2 at the inner end of the slide rail 7. A carbon brush groove pulley anti-collision block 7-5 is provided at the center of the carbon brush groove pulley baffle 7-4. The carbon brush groove 8 is provided with carbon brush groove pulley shafts 8-1 at both ends of the middle part near the slide rail 7. The front end of the carbon brush groove pulley shaft 8-1 is provided with a carbon brush groove pulley 8-2. The carbon brush groove pulley 8-2 is placed in the groove of the slide rail 7. There are two carbon brush groove pulleys 8-2. It also includes a carbon brush slot moving handle 8-3, which is fixed to the center of the surface of the carbon brush slot 8 adjacent to the carbon brush slot pulley shaft 8-1 via a carbon brush slot moving handle connecting rod 8-3-1.

[0026] It also includes a carbon brush holder 9-2, which is fixed to one side of the carbon brush groove 8 by a carbon brush holder bracket 9, and the carbon brush holder 9-2 presses the carbon brush 10 inside the carbon brush groove 8. Example

[0027] As one specific embodiment provided by the present invention, such as Figures 1 to 3 The main column 1 is a cuboid with a main column top beam groove 1-1 on top. The secondary column 1-2 is a cuboid with a secondary column top beam groove 1-2-1 on top.

[0028] The main column 1 and the secondary columns 1-2 are symmetrically provided with sand belt guides 1-3 on the outer side of their lower edges.

[0029] The main column 1 and the auxiliary column 1-2 are respectively provided with sanding belt shaft mounting side plates 1-4 symmetrically below them. The center of the sanding belt shaft mounting side plate 1-4 is provided with a sanding belt shaft bearing mounting hole 1-4-1. The bottom of the sanding belt shaft mounting side plate 1-4 is connected through the sanding belt shaft base plate 1-5.

[0030] The abrasive belt bearing 1-6 is fixed in the abrasive belt bearing mounting hole 1-4-1. The abrasive belt 1-7 is cylindrical and has abrasive belt mounting posts 1-7-1 on both sides. The abrasive belt mounting posts 1-7-1 are fixed in the core of the abrasive belt bearing 1-6, allowing the abrasive belt 1-7 to rotate freely.

[0031] The top beam 2 has a top beam locking block 2-1 at the front end, which can be placed in the top beam groove 1-2-1 of the secondary column. The top beam 2 has a top beam rotating shaft 2-2 at the rear end, which is installed in the top beam groove 1-1 of the main column. The top beam 2 can rotate through the top beam rotating shaft 2-2.

[0032] A top beam handle 2-3 is provided above the middle part of the top beam 2.

[0033] The main column 1, main column top beam groove 1-1, secondary column 1-2, secondary column top beam groove 1-2-1, sanding belt guide 1-3, sanding belt shaft mounting side plate 1-4, sanding belt shaft bearing mounting hole 1-4-1, sanding belt shaft bottom plate 1-5, sanding belt shaft bearing 1-6, sanding belt shaft 1-7, sanding belt shaft mounting column 1-7-1, top beam 2, top beam locking block 2-1, top beam rotating shaft 2-2, and top beam handle 2-3 constitute the portal frame of the device.

[0034] As one specific embodiment of the present invention, such as Figure 1 and Figure 2The nylon arc-shaped conductive strip 3 is composed of multiple nylon blocks with small gaps between them. The bottom is connected by a whole nylon sheet, and the two ends of the whole nylon sheet are fixed to the two sanding belt shaft base plates 1-5.

[0035] As a specific embodiment of the present invention, a lock shaft mounting through hole is provided below the lock body 4, a lock spring embedding groove is provided between the lock shaft mounting through holes, a lock pressure plate is provided below the lock shaft mounting through hole, and there is a certain angle between the lock pressure plate and the lock body 4.

[0036] Furthermore, the top of the lock body 4 is provided with a lock buckle, the upper part of which is curved and the lower part is flat.

[0037] Furthermore, two lock springs are provided in the middle of the lock shaft. The lock springs are placed in the lock spring embedding groove, with one end connected to the lock shaft and the other end connected to the lock body 4.

[0038] Furthermore, both ends of the lock shaft pass through the lock shaft mounting through hole and are fixed in the lock shaft fixing hole on the lock base.

[0039] The lock consists of a lock shaft mounting through hole, a lock spring embedding groove, a lock pressure plate, a lock buckle, a lock shaft, a lock spring, a lock base, and a lock shaft fixing hole. The entire lock is fixed to the outer side of the top of the secondary column 1-2 through the lock base, and its lock buckle can press the top beam lock block 2-1 at the front end of the top beam 2.

[0040] As one specific embodiment provided by the present invention, such as Figure 1 , Figure 2 and Figure 4 The sanding belt storage wheel 5 has raised edges. The central shaft 5-1 of the sanding belt storage wheel passes through the center of the sanding belt storage wheel 5 and is fixed at both ends in the central shaft fixing holes 5-3-1 of the sanding belt storage wheel mounting base 5-3. The sanding belt storage wheel 5 can rotate on the central shaft 5-1 of the sanding belt storage wheel.

[0041] The sanding belt collecting wheel return spring 5-2 is wound around the central shaft 5-1 of the sanding belt collecting wheel. One end of the spring is fixed to the central shaft 5-1 of the sanding belt collecting wheel, and the other end is fixed to the sanding belt collecting wheel 5. The sanding belt collecting wheel return spring 5-2 is always under force.

[0042] As one specific embodiment provided by the present invention, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 The sanding belt puller 6 has a sanding belt puller central shaft 6-1 at both ends. The two ends of the sanding belt puller central shaft 6-1 are placed in the sanding belt puller bearing mounting through hole 6-4-1 of the sanding belt puller mounting base 6-4, and can rotate inside it.

[0043] The longer end of the central shaft 6-1 of the sanding belt puller is provided with a sanding belt puller dial 6-2. The sanding belt puller dial 6-2 is gear-shaped, with one side being a straight surface and the other side being an arc surface.

[0044] A dialing baffle base 6-3 is provided on the sanding belt lead-out wheel mounting base 6-4 on the side of the sanding belt lead-out wheel 6-2. Two dialing baffle mounting brackets 6-3-2 are provided at the front end of the dialing baffle base 6-3, and dialing baffle mounting brackets 6-3-2 are provided at the front end of the dialing baffle mounting through hole 6-3-3.

[0045] A dial baffle block 6-3-1 is provided at the lower part between the two dial baffle mounting brackets 6-3-2.

[0046] The dial baffle 6-3-4 is square, with dial baffle pivots 6-3-5 at both ends of the top. The dial baffle pivots 6-3-5 are installed in the dial baffle mounting through holes 6-3-3. The rear of the dial baffle 6-3-4 is blocked by the dial baffle block 6-3-1, so it can only be lifted forward.

[0047] As one specific embodiment provided by the present invention, such as Figure 1 and Figure 7 The slide 7 has a concave structure and slide baffles 7-1 are provided at both ends. The center of the slide baffle 7-1 is provided with a positioning threaded rod mounting screw hole 7-1-1.

[0048] The positioning threaded rod 7-2 is placed in the positioning threaded rod mounting screw hole 7-1-1, and the outer end of its slide 7 is provided with a positioning threaded rod adjusting wheel 7-3.

[0049] The inner end of the slide 7 of the positioning threaded rod 7-2 is provided with a carbon brush groove pulley baffle 7-4, and the center of the carbon brush groove pulley baffle 7-4 is provided with a carbon brush groove pulley anti-collision block 7-5.

[0050] Rotating the threaded rod adjusting wheel 7-3 at both ends will adjust the position of the carbon brush groove pulley baffle 7-4, thus achieving a positioning function.

[0051] As one specific embodiment provided by the present invention, such as Figure 1 , Figure 8 and Figure 9 In the carbon brush groove 8, carbon brush groove pulley shafts 8-1 are provided at both ends near the middle of the slide rail 7. A carbon brush groove pulley 8-2 is provided at the front end of the carbon brush groove pulley shaft 8-1. The carbon brush groove pulley 8-2 is placed in the groove of the slide rail 7. There are two carbon brush groove pulleys 8-2 to prevent tipping.

[0052] It also includes a carbon brush slot moving handle 8-3, which has a concave-convex surface for anti-slip, and is fixed to the center of the carbon brush slot 8 adjacent to the carbon brush slot pulley shaft 8-1 via a carbon brush slot moving handle connecting rod 8-3-1.

[0053] The upper middle part of the carbon brush groove 8 away from the slide rail 7 is provided with a carbon brush pressing bracket storage groove 8-4. The inner groove of the carbon brush pressing bracket storage groove 8-4 is a trapezoidal structure. The two outer ends of the inner groove are provided with carbon brush pressing bracket positioning posts 8-4-1. The carbon brush pressing bracket positioning posts 8-4-1 and the bottom of the carbon brush pressing bracket storage groove 8-4 form a carbon brush pressing bracket fixing groove 8-4-2.

[0054] The carbon brush holder 9 is made of stainless steel, and a carbon brush holder fixing block 9-1 is provided at the bottom. The carbon brush holder fixing block 9-1 is embedded in the carbon brush holder fixing groove 8-4-2. A carbon brush holder 9 is provided with a carbon brush holder 9-2 near the carbon brush groove 8. The carbon brush holder 9-2 is elastic and can be stretched upwards and rolled downwards when there is no external force, so as to press the internal carbon brush 10.

[0055] As one specific embodiment provided by the present invention, such as Figure 1 The sanding belt 11 is wound into the sanding belt receiving wheel 5, and one end is led out and passed through the sanding belt guide 1-3 of the secondary column 1-2 in sequence. The sanding belt shaft 1-7 of the secondary column 1-2 is then placed on the nylon arc surface conduction row 3, and then passed through the sanding belt shaft 1-7 of the main column 1 and the sanding belt guide 1-3 of the main column in sequence before being fixed in the sanding belt lead-out wheel 6.

[0056] When using this invention, adjust the position of the slide baffle, place the carbon brush in the carbon brush groove, cover and lock the top beam, rotate the sanding belt lead-out wheel, adjust the sanding belt, place the device on the carbon brush slip ring, the nylon arc surface conduction row supports the sanding belt and arches it to form the same arc as the carbon brush slip ring, push and pull the carbon brush groove moving handle several times, and the carbon brush can be sanded by the sanding belt to form the same arc as the carbon brush slip ring. Open the top beam and take out the carbon brush for direct use.

Claims

1. A carbon brush polishing device for an AC synchronous motor, characterized in that: The system includes a portal frame, a nylon curved surface conduction bus (3), a sanding belt receiving wheel (5), a sanding belt lead-out wheel (6), a slide rail (7), a carbon brush groove (8), a carbon brush (10), and a sanding belt (11). The slide rail (7) and the carbon brush groove (8) are located inside the portal frame. The carbon brush groove (8) is slidably connected to the slide rail (7), and the carbon brush (10) is placed in the carbon brush groove (8). The nylon curved surface conduction bus (3) is located at the bottom of the portal frame. The sanding belt receiving wheel (5) and the sanding belt lead-out wheel (6) are located inside the portal frame. The output wheels (6) are placed on the outer sides of the portal frame respectively. The sanding belt (11) is inserted into the bottom of the portal frame through the sanding belt receiving wheel (5) and the sanding belt lead-out wheel (6). The part of the sanding belt (11) that passes through the portal frame is placed on the nylon arc surface conduction row (3). The bottom of the carbon brush (10) is in contact with the sanding belt (11). The portal frame is placed on the carbon brush slip ring. The nylon arc surface conduction row (3) supports the sanding belt (11) and arches it up, forming the same arc as the carbon brush slip ring.

2. The AC synchronous motor carbon brush polishing device according to claim 1, characterized in that: The portal frame includes a main column (1), a secondary column (1-2), and a top beam (2). The main column (1) and the secondary column (1-2) are arranged in parallel. The top of the main column (1) is provided with a main column top beam groove (1-1), and the rear end of the top beam (2) is provided with a top beam pivot (2-2). The top beam pivot (2-2) is installed in the main column top beam groove (1-1), and the top beam (2) can be rotated through the top beam pivot (2-2). The top of the secondary column (1-2) is provided with a secondary column top beam groove (1-2-1), and the front end of the top beam (2) is provided with a top beam locking block (2-1). The top beam locking block (2-1) is placed in the secondary column top beam groove (1-2-1). The top beam (2) is provided with a top beam handle (2-3) above the middle part.

3. The AC synchronous motor carbon brush polishing device according to claim 2, characterized in that: The main column (1) and the secondary column (1-2) are symmetrically provided with sanding belt guides (1-3) on the outer side of their lower edges. The bottom of the main column (1) and the secondary column (1-2) are rotatably mounted with sanding belt shafts (1-7) via side plates (1-4). The sanding belt (11) is wound into the sanding belt receiving wheel (5), and one end is led out and passed through the sanding belt guide (1-3) of the secondary column (1-2) and the sanding belt shaft (1-7) of the secondary column (1-2) in sequence before being placed on the nylon arc-shaped conduction row (3). Then it passes through the sanding belt shaft (1-7) of the main column (1) and the sanding belt guide (1-3) of the main column in sequence before being fixed in the sanding belt lead-out wheel (6).

4. The AC synchronous motor carbon brush polishing device according to claim 3, characterized in that: The nylon arc-shaped conductive strip (3) is composed of one or more nylon blocks with gaps between them. The bottom is connected by a whole nylon sheet. The bottom of the two sanding belt shaft mounting side plates (1-4) is connected to the sanding belt shaft base plate (1-5). The two ends of the whole nylon sheet are respectively fixed on the two sanding belt shaft base plates (1-5).

5. The AC synchronous motor carbon brush polishing device according to claim 2, characterized in that: It also includes a lock body (4), and a lock buckle (4-4) is provided on the top of the lock body (4). The upper part of the lock buckle is curved and the lower part is flat. The entire lock is fixed to the outer side of the top of the secondary column (1-2) through the lock base (4-7). Its lock buckle (4-4) can press the top beam lock block (2-1) at the front end of the top beam (2).

6. The AC synchronous motor carbon brush polishing device according to claim 2, characterized in that: The sanding belt collecting wheel (5) has a raised edge structure. The sanding belt collecting wheel mounting base (5-3) is installed on the outside of the sub-column (1-2). The sanding belt collecting wheel central shaft (5-1) passes through the center of the sanding belt collecting wheel (5) and both ends are fixed in the sanding belt collecting wheel central shaft fixing hole (5-3-1) of the sanding belt collecting wheel mounting base (5-3). The sanding belt collecting wheel return spring (5-2) is wrapped around the sanding belt collecting wheel central shaft (5-1). One end of the spring is fixed on the sanding belt collecting wheel central shaft (5-1), and the other end is fixed on the sanding belt collecting wheel (5). The sanding belt collecting wheel return spring (5-2) always remains under force.

7. The AC synchronous motor carbon brush polishing device according to claim 2, characterized in that: The sanding belt pull-out wheel (6) has a sanding belt pull-out wheel central shaft (6-1) at both ends. The sanding belt pull-out wheel central shaft (6-1) is rotatably mounted on the sanding belt pull-out wheel mounting base (6-4). The sanding belt pull-out wheel mounting base (6-4) is mounted on the outside of the main column (1). The longer end of the sanding belt pull-out wheel central shaft (6-1) is provided with a sanding belt pull-out wheel dial wheel (6-2). The sanding belt pull-out wheel dial wheel (6-2) is gear-shaped, with one side being a straight surface and the other side being an arc surface. The sanding belt pull-out wheel mounting base (6-4) is provided with a dial wheel baffle base (6-3). The lower part of the dial wheel baffle base (6-3) is equipped with a dial wheel baffle block (6-3-1), and the front end is rotatably equipped with a dial wheel baffle (6-3-4). The rear of the dial wheel baffle (6-3-4) is blocked by the dial wheel baffle block (6-3-1), and it can only be lifted forward.

8. The AC synchronous motor carbon brush polishing device according to claim 2, characterized in that: The slide (7) has a concave structure and slide baffles (7-1) are provided at both ends. The slide baffle (7-1) has a positioning threaded rod mounting screw hole (7-1-1) at the center. The positioning threaded rod (7-2) is placed in the positioning threaded rod mounting screw hole (7-1-1) and a positioning threaded rod adjusting wheel (7-3) is provided at the outer end of the slide (7). A carbon brush groove pulley baffle (7-4) is provided on the positioning threaded rod (7-2) at the inner end of the slide (7). A carbon brush groove pulley anti-collision block (7-5) is provided at the center of the carbon brush groove pulley baffle (7-4).

9. The AC synchronous motor carbon brush polishing device according to claim 8, characterized in that: The carbon brush groove (8) is provided with carbon brush groove pulley shafts (8-1) at both ends of the middle part of the side near the slide (7). The front end of the carbon brush groove pulley shaft (8-1) is provided with a carbon brush groove pulley (8-2). The carbon brush groove pulley (8-2) is placed in the groove of the slide (7). There are two carbon brush groove pulleys (8-2). It also includes a carbon brush slot moving handle (8-3), which is fixed to the center of the carbon brush slot (8) adjacent to the carbon brush slot pulley shaft (8-1) by a carbon brush slot moving handle connecting rod (8-3-1).

10. The AC synchronous motor carbon brush polishing device according to claim 1, characterized in that: It also includes a carbon brush holder (9-2), which is fixed to one side of the carbon brush groove (8) by a carbon brush holder bracket (9), and the carbon brush holder (9-2) presses the carbon brush (10) inside the carbon brush groove (8).

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