Polishing device for collecting ring of generator

Abstract

The utility model provides a generator collecting ring polishing device which comprises two clamping plates, one ends of the two clamping plates are hinged to each other, a tension spring is installed between the two clamping plates so that the other ends of the two clamping plates can move in a folded mode, and the other ends of the two clamping plates are respectively provided with a grinding mechanism. Abrasive belts are arranged at the front ends of the two grinding mechanisms correspondingly, and the belt faces of the two abrasive belts are oppositely arranged. When the grinding device is used, the grinding belts make contact with the two sides of the collecting ring at the same time to grind the collecting ring, and therefore the grinding efficiency is improved. And in the grinding process, the contact force between the abrasive belt and the collecting ring can be kept constant all the time through the tension spring and the elastic piece, then accurate grinding of the collecting ring can be achieved, the surface of the collecting ring is smoother and smoother, the hand is far away from the rotating collecting ring, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generator maintenance, in particular to a generator collector ring grinding device. Background Art

[0002] The generator collector ring is one of the important components of the generator. Its outer ring wall fits tightly with the carbon brush, thereby achieving electrical conduction with the outside during the rotation of the rotor. Since the ring wall and the carbon brush are in sliding contact, the collector ring surface must be smooth and flat to achieve good contact between the two, so as to ensure the stable operation of the generator. However, due to reasons such as the quality of the carbon brush and the accuracy of installation, the collector ring surface will become rough after friction connection, resulting in poor contact between the two, further leading to serious sparks and ring fires between the carbon brush and the collector ring, causing damage to the collector ring and the motor equipment, requiring long-term shutdown and maintenance, resulting in economic losses. Therefore, in order to ensure the smoothness of the collector ring surface, its ring surface needs to be polished regularly. The existing polishing method is mainly to use handheld sandpaper or grinding stone to grind the rotating collector ring. However, direct handheld grinding tool operation has great safety hazards, the grinding contact surface is small and inefficient, and the handheld pressing force is different. In particular, when using a grinding stone for grinding, it is easy to cause puncture of the ring surface. In view of this, a generator collector ring polishing device is provided. Summary of the Invention

[0003] The technical solution adopted by the utility model to solve the technical problems in the background technology is: a generator collector ring grinding device, including two clamping plates, one end of which is hinged to each other, and a tension spring is installed between the two clamping plates so that the other ends of the two clamping plates can be retracted and moved, and a grinding mechanism is respectively installed at the other end of the two clamping plates, a rotating shaft is provided at the tail end, and the grinding mechanism is rotatably connected to the clamping plate through the rotating shaft, a spring is installed on the clamping plate, one end of which is connected to the grinding mechanism to limit the rotation range of the grinding mechanism, and a grinding belt is respectively provided at the front end of the two grinding mechanisms, and the belt surfaces of the two grinding belts are arranged opposite to each other.

[0004] Preferably, the grinding mechanism includes two mounting plates, between which two belt rollers are installed and at the front ends of the mounting plates, wherein a through hole is opened on the mounting plate, the ends of the belt rollers are installed in the through hole, and both ends are fixed to the mounting plates by mounting nuts, and the sanding belt is wrapped around the two belt rollers.

[0005] Preferably, one of the through holes for installing the belt roller is a waist-shaped hole, and the mounting nut for fixing the belt roller is a butterfly nut.

[0006] Preferably, blocking rods are installed on opposite sides of the two mounting plates, wherein there are two blocking rods on each mounting plate and they are symmetrically arranged, and the springs can block the blocking rods so that they move within a certain range.

[0007] Preferably, a sleeve sleeved on the rotating shaft is provided between the clamping plate and the mounting plate.

[0008] Preferably, the two splints are hinged via a hinge shaft, and a handle is provided at one end of the hinge shaft.

[0009] Preferably, bolts are respectively installed on the two clamping plates, and both ends of the tension spring are respectively installed on the corresponding bolts.

[0010] The beneficial effect of the present invention is that the present invention is provided with two elastically openable or retractable clamping plates, which can be placed on the outside of the collector ring after opening, and two oppositely arranged grinding mechanisms are provided on the inner side of the clamping plate ends, and each grinding mechanism is provided with a sanding belt in front. When in use, the sanding belt contacts both sides of the collector ring at the same time to grind the collector ring, thereby improving the grinding efficiency. Moreover, during grinding, the tension spring and the spring can always keep the contact force between the sanding belt and the collector ring constant, thereby achieving accurate grinding of the collector ring, making its surface smoother and flatter, and keeping the hands away from the rotating collector ring improves the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the grinding device provided in an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the main structure of the grinding device provided in an embodiment of the present utility model;

[0014] Figure 3 yes Figure 1 Schematic diagram of the decomposition structure;

[0015] Figure 4 This is a schematic diagram of the grinding mechanism structure of the utility model embodiment;

[0016] Figure 5 This is a schematic diagram of the structure of the grinding device provided in the embodiment of the present utility model;

[0017] In the figure: 1-clamping plate, 2-grinding mechanism, 2.1-mounting plate, 2.2-belt roller, 2.3-grinding belt, 2.4-rotating shaft, 2.5-sleeve, 2.6-mounting nut, 2.7-stop rod, 3-tension spring, 4-handle, 5-spring, a-collector ring. DETAILED DESCRIPTION

[0018] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0019] In a specific embodiment, a generator slip ring grinding device is provided, comprising two clamping plates 1, the rear ends of which are hingedly connected to each other. A tension spring 3 is installed between the two clamping plates 1. In this embodiment, bolts are preferably installed on each of the two clamping plates 1, and the ring bodies of the tension spring 3 at each end are respectively installed on the corresponding bolts. The bolt caps can block the rings at the ends of the tension spring 3, and the bolts can facilitate the installation and removal of the spring. The front ends of the two clamping plates 1 can be retracted and extended by manually overcoming the spring force.

[0020] In order to realize the grinding of the collector ring, a grinding mechanism 2 is respectively installed at the front end of the two clamps 1, and a rotating shaft 2.4 is provided at the tail end of the grinding mechanism 2. The grinding mechanism 2 is rotatably connected to the clamp 1 through the rotating shaft 2.4. In addition, in order to prevent the grinding mechanism 2 from rotating over a large range, a spring piece 5 is installed on the clamp 1, and the elastic end at its end is connected to the grinding mechanism 2, which can limit the rotation range of the grinding mechanism 2 and limit the swing of the grinding mechanism 2 within a certain range, so that it can always be fitted with the collector ring. Specifically, a grinding belt 2.3 is respectively provided at the front end of the two grinding mechanisms 2, and the belt surfaces of the two grinding belts 2.3 are arranged opposite to each other.

[0021] During installation, first unfold the front ends of the two splints 1, then put the unfolded ends on the outside of the collector ring a, and at the same time make the sanding belt 2.3 at the front end of the grinding mechanism 2 correspond to the two opposite sides of the outside of the collector ring a, release the tension spring 3, and through the tension of the tension spring 3, make the sanding belt 2.3 fit the outside of the collector ring a, and at the same time, through the slight swing of the grinding mechanism 2 around the rotating shaft 2.4, the sanding belt 2.3 can automatically adjust its position with the outside of the collector ring a. During grinding, the collector ring a rotates, and the splint 1 is held to keep the axial position of the sanding belt 2.3 and the grinding part fixed. At this time, the sanding belts 2.3 on both sides grind the collector ring a at the same time, improving the grinding efficiency. During grinding, the tension spring 3 and the spring 5 can always keep the contact force between the sanding belt 2.3 and the collector ring a constant, thereby achieving accurate grinding of the collector ring a, making its surface smoother and flatter, and keeping the hands away from the rotating collector ring improves operation safety. In order to facilitate the handheld grinding device, the two clamping plates 1 are hinged by a hinge shaft, and a handle 4 is provided at one end of the hinge shaft. The handle 4 can be used to hold the device during use, further improving the ease of use.

[0022] The grinding mechanism 2 includes two mounting plates 2.1, between which two belt rollers 2.2 are mounted at the front ends of the mounting plates 2.1. Specifically, a through hole is provided on the mounting plate 2.1, and the ends of the belt rollers 2.2 are mounted in the through hole. To achieve the installation of the belt rollers 2.2, both ends of the belt rollers 2.2 are fixed to the mounting plate 2.1 via mounting nuts 2.6, which is equivalent to the two mounting plates 2.1 being clamped at both ends of the belt rollers 2.2. In addition, the sanding belt 2.3 is wound around the two belt rollers 2.2. It should be noted that the two belt rollers 2.2 in this example do not rotate during grinding. Instead, the two belt rollers 2.2 can stretch the sanding belt 2.3 but not tighten it. When in contact with the collector ring, the sanding belt 2.3 is bent to a certain extent, causing the sanding belt to wrap around the collector ring and contact the collector ring, thereby increasing the contact area between the two, improving the grinding efficiency, and making the fit more stable. In addition, after the belt roller 2.2 and the mounting plate 2.1 are disassembled, the abrasive belt 2.3 is completely loosened, and the grinding position of the abrasive belt can be adjusted, thereby achieving complete use of the entire abrasive belt.

[0023] On this basis, in order to further facilitate the adjustment of the grinding position of the sanding belt, one of the through holes for installing the belt roller 2.2 is a waist-shaped hole, and the mounting nut 2.6 used to fix the belt roller 2.2 is a butterfly nut. Therefore, without separating the belt roller 2.2 and the mounting plate 2.1, the belt tension and the grinding position of the sanding belt can be easily adjusted by moving the belt roller 2.2 in the waist-shaped hole, thereby improving the convenience of use.

[0024] In addition, based on the above display of the grinding mechanism 2, the present application specifically provides the installation structure of the spring piece 5 and the grinding mechanism 2, and a blocking rod 2.7 is installed on the opposite surfaces of the two mounting plates 2.1, wherein there are two blocking rods 2.7 on each mounting plate 2.1 and they are symmetrically arranged, and the spring piece 5 is fixed on the splint 1, and the spring piece 5 can block the rod 2.7 so that it moves within a certain range.

[0025] In addition, a sleeve 2.5 sleeved on the rotating shaft 2.4 is provided between the clamping plate 1 and the mounting plate 2.1. The sleeve 2.5 can support the rear end of the mounting plate 2.1 to improve the connection strength.

[0026] Based on the above-described preferred embodiments of the present invention, and in accordance with the above description, relevant personnel are fully capable of making various changes and modifications without departing from the scope of the technical concept of this invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A generator collector ring grinding device, characterized in that: The invention comprises two clamping plates (1), one end of which is hinged to each other, a tension spring (3) is installed between the two clamping plates (1) so that the other ends of the two clamping plates (1) can be retracted and moved, and a grinding mechanism (2) is installed at the other end of each of the two clamping plates (1), a rotating shaft (2.4) is arranged at the tail end thereof, and the grinding mechanism (2) is rotatably connected to the clamping plates (1) via the rotating shaft (2.4), a spring sheet (5) is installed on the clamping plates (1), one end of which is connected to the grinding mechanism (2) to limit the rotation range of the grinding mechanism (2), and a sanding belt (2.3) is arranged at the front end of each of the two grinding mechanisms (2), and the belt surfaces of the two sanding belts (2.3) are arranged opposite to each other.

2. A generator collector ring grinding device as claimed in claim 1, characterized in that: The grinding mechanism (2) comprises two mounting plates (2.1), between which two belt rollers (2.2) are mounted and located at the front ends of the mounting plates (2.1), wherein a through hole is provided on the mounting plate (2.1), the ends of the belt rollers (2.2) are mounted in the through hole, and both ends are fixed to the mounting plates (2.1) by mounting nuts (2.6), and the sanding belt (2.3) is wound around the two belt rollers (2.2).

3. A generator collector ring grinding device as claimed in claim 2, characterized in that: One of the through holes for installing the belt roller (2.2) is a waist-shaped hole, and the mounting nut (2.6) for fixing the belt roller (2.2) is a butterfly nut.

4. A generator collector ring grinding device as claimed in claim 2, characterized in that: Blocking rods (2.7) are installed on opposite surfaces of the two mounting plates (2.1), wherein the blocking rods (2.7) on each mounting plate (2.1) are two and symmetrically arranged, and the spring sheet (5) can block the blocking rods (2.7) so that they move within a certain range.

5. A generator collector ring grinding device as claimed in claim 2, characterized in that: A sleeve (2.5) sleeved on the rotating shaft (2.4) is provided between the clamping plate (1) and the mounting plate (2.1).

6. A generator collector ring grinding device as claimed in claim 1, characterized in that: The two clamping plates (1) are hingedly connected via a hinge shaft, and a handle (4) is provided at one end of the hinge shaft.

7. A generator collector ring grinding device as claimed in claim 1, characterized in that: Bolts are respectively installed on the two clamping plates (1), and two ends of the tension spring (3) are respectively installed on the corresponding bolts.

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