Carbon brush radian grinding device

Abstract

The invention discloses a carbon brush radian grinding device, belongs to the field of machining, and aims to solve the problems that the using effect is affected due to the fact that the radian scraped by a carbon brush cannot be tightly matched with the surface of a slip ring in a manual scraping mode, and the manual scraping mode wastes labor and time. The device comprises a linkage rod, two arc-shaped guide slideways, a carbon brush driving mechanism, an arc-shaped grinding surface and a brush holder, the two arc-shaped guide slideways are arranged side by side front and back, and the linkage rod is connected to the two arc-shaped guide slideways in a sliding mode; the brush holder is installed on the linkage rod and used for fixing a carbon brush to be ground, the arc-shaped grinding face is arranged on one side of the brush holder, and the arc-shaped grinding face and the arc-shaped guide sliding way are the same in radian. The carbon brush driving mechanism is in driving connection with the linkage rod and drives the linkage rod to move along the arc-shaped guide sliding way, and the linkage rod drives the carbon brush to be ground to be attached to the arc-shaped grinding face through the brush holder and move in a reciprocating mode so as to grind the carbon brush to be ground. The device is mainly used for grinding the cambered surface of the carbon brush.

Description

Technical Field

[0001] The present invention relates to the field of machining, and in particular to a carbon brush arc grinding device. Background Art

[0002] The carbon brushes of large motors and generators are important conduction carriers of exciting current. After the carbon brushes are used for a period of time and worn too short, they need to be replaced. In order to ensure the close fit between the carbon brushes and the slip rings, it is necessary to pre-process the arcs of the carbon brushes. At present, there is no mature and convenient such device on the market. Generally, the manual scraping method is still used. The arcs scraped by the carbon brushes cannot be closely fitted with the surfaces of the slip rings, which affects the use effect, and the manual scraping method is time-consuming and laborious. Summary of the Invention

[0003] In view of this, the present invention provides a carbon brush arc grinding device, which can realize the mechanical grinding of carbon brushes and ensure the grinding accuracy of carbon brushes.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A carbon brush arc grinding device includes a linkage rod, an arc-shaped guiding slideway, a carbon brush driving mechanism, an arc-shaped grinding surface and a brush holder. There are two arc-shaped guiding slideways arranged side by side front and back. The linkage rod is slidably connected to the two arc-shaped guiding slideways; the brush holder is installed on the linkage rod for fixing the carbon brush to be ground. The arc-shaped grinding surface is arranged on one side of the brush holder, and the arc-shaped grinding surface has the same arc as the arc-shaped guiding slideway; the carbon brush driving mechanism is drivingly connected to the linkage rod, and the carbon brush driving mechanism drives the linkage rod to move along the arc-shaped guiding slideway. The linkage rod drives the carbon brush to be ground to fit the arc-shaped grinding surface and reciprocate through the brush holder, so as to grind the carbon brush to be ground.

[0006] Further, the grinding device further includes a support base for supporting the linkage rod. There are two support bases, which are arranged side by side front and back. The upper surface of each support base is provided with an arc-shaped chute as the arc-shaped guiding slideway. The lower surface of the linkage rod is provided with a slider, and the linkage rod is slidably connected to the arc-shaped guiding slideway through the slider.

[0007] Further, the carbon brush driving mechanism is installed on one of the support bases, and the arc-shaped grinding surface is arranged on the other support base.

[0008] Further, the grinding device further includes sandpaper. The other support base is provided with an arc-shaped support surface facing the brush holder, and the sandpaper is attached to the arc-shaped support surface to form the arc-shaped grinding surface.

[0009] Further, the carbon brush driving mechanism includes a driving motor, a gear, and an arc-shaped internal rack. The arc-shaped internal rack is arc-shaped and is arranged parallel to one side of the arc-shaped guiding slideway. The driving motor is installed on the linkage rod and is drivingly connected to the gear. The gear is meshingly connected to the arc-shaped internal rack.

[0010] Further, the brush holder includes a rectangular clamping cylinder and a coil spring. One end of the coil spring is fixed to the rectangular clamping cylinder, and the other end is inside the rectangular clamping cylinder. The rectangular clamping cylinder is installed below the linkage rod by bolts.

[0011] Further, the grinding device further includes a carbon powder recovery box for recovering carbon powder. The carbon powder recovery box is arranged below the arc-shaped grinding surface and the brush holder. A carbon powder leakage hole is opened on the upper surface of the carbon powder recovery box at the junction of the carbon brush to be ground and the arc-shaped grinding surface.

[0012] Further, the inner cavity of the carbon powder recovery box is divided into two cavities. One cavity is used for placing power devices, and the other cavity is used for recovering carbon powder.

[0013] Further, an exhaust fan is installed on the side wall of the carbon powder recovery box, and a storage bag is sleeved outside the exhaust fan.

[0014] Further, a position switch is provided at each end of each arc-shaped guiding slideway.

[0015] The beneficial effects of the present invention compared with the prior art are as follows:

[0016] 1. The carbon brush arc grinding device of the present invention can realize the mechanical grinding of the carbon brush through the cooperation of the linkage rod, the carbon brush driving mechanism, the arc-shaped grinding surface, the arc-shaped guiding slideway, and the brush holder. At the same time, the attitude of the brush holder is adjusted by using the old carbon brush to ensure that the arc surface ground by the new carbon brush is the same as the arc surface of the old carbon brush, and the grinding accuracy of the new carbon brush and the use effect of the generator are ensured.

[0017] 2. The overall structure of the present invention is delicate and convenient, and the motor energy consumption is low. Therefore, it can be powered by a battery and is convenient to move. When the battery runs out of power, the linkage rod can also be manually pushed and pulled to realize the reciprocating movement of the carbon brush and achieve the grinding of the carbon brush. That is, the carbon brush arc grinding device of this embodiment can be used both electrically and manually. Description of the Drawings

[0018] The drawings, as a part of this application, are used to provide a further understanding of the present invention.

[0019] Figure 1 It is a schematic structural diagram of a carbon brush arc grinding device of the present invention.

[0020] Figure 2 It is an exploded view of a carbon brush arc grinding device of the present invention.

[0021] Figure 3 This is a top view of a carbon brush arc grinding device of the present invention.

[0022] Figure 4 It is Figure 3 the sectional view at A-A in

[0023] Explanation of reference numerals: 1 - linkage rod; 1-2 - slider; 2 - carbon brush drive mechanism; 2-1 - drive motor, 2-2 - gear; 2-3 - arc-shaped internal rack; 3 - sandpaper; 4 - brush holder; 5 - rectangular clamping cylinder; 6 - coil spring; 7 - carbon powder recovery box; 7-1 - carbon powder leakage hole; 8 - support base; 8-1 - arc-shaped guide slideway; 9 - exhaust fan. Specific implementation mode

[0024] The following will make a detailed description of the present invention in combination with the accompanying drawings and specific embodiments.

[0025] Figure 1 The structural schematic diagram of a carbon brush arc grinding device of this embodiment is shown. As Figure 1 shown, the carbon brush arc grinding device includes a linkage rod 1, a carbon brush drive mechanism 2, sandpaper 3, a brush holder 4 for fixing the carbon brush to be ground, a carbon powder recovery box 7 for recovering carbon powder, and a support base 8 for supporting the linkage rod 1.

[0026] There are two support bases 8, and these two support bases 8 are arranged side by side in the front and back on the upper surface of the carbon powder recovery box 7. An arc-shaped chute is opened on the upper surface of each support base 8 to serve as an arc-shaped guide slideway 8-1. The arcs of these two arc-shaped guide slideways 8-1 are the same and are arranged in parallel. A position switch is provided at each end of each arc-shaped guide slideway 8-1.

[0027] As Figure 4 shown, a slider 1-2 is provided on the lower surface of each end of the linkage rod 1 in the length direction. The linkage rod 1 is slidably connected to the two arc-shaped guide slideways 8-1 through these two sliders 1-2 respectively. The linkage rod 1 can only perform an arc-shaped translational motion under the limitation of these two arc-shaped guide slideways 8-1. In this way, the carbon brush to be ground can be driven by the brush holder 4 to perform an arc-shaped translational motion.

[0028] As Figure 2As shown, the brush holder 4 is mounted below the linkage rod 1 by bolts, and the brush holder 4 is located between two support bases 8; the brush holder 4 includes a rectangular clamping cylinder 5 and a coil spring 6. One end of the coil spring 6 is fixed to the rectangular clamping cylinder 5, and the other end is inside the rectangular clamping cylinder 5 and in a free state. The carbon brush to be ground is inserted into the rectangular clamping cylinder 5 and is slidably connected to the rectangular clamping cylinder 5. When the carbon brush to be ground is inserted into the rectangular clamping cylinder 5, the other end of the coil spring 6 is pushed outward by the carbon brush to be ground and unfolds. At this time, the coil spring 6 stores a certain elastic force and generates a thrust on the carbon brush to be ground. As the carbon brush to be ground is ground, the coil spring 6 winds up, and the carbon brush to be ground is continuously fed forward under the resilience of the coil spring 6 to ensure that the arc surface of the carbon brush to be ground always fits the arc-shaped grinding surface.

[0029] As Figure 1 shown, the sandpaper 3 is mounted on one of the support bases 8. The side of the support base 8 facing the brush holder 4 is provided with an arc-shaped support surface, and the sandpaper 3 is attached to the arc-shaped support surface to form an arc-shaped grinding surface. The ground surface of the carbon brush to be ground is attached to the arc-shaped grinding surface, and as the carbon brush to be ground moves, it is ground by the arc-shaped grinding surface.

[0030] As Figure 1 and Figure 2 shown, the inner cavity of the toner recovery box 7 is divided into two cavities. One cavity is used to install power devices, and the other cavity is used to recover toner. A toner leakage hole 7-1 is opened on the upper surface of the toner recovery box 7 at the junction of the carbon brush to be ground and the arc-shaped grinding surface. The toner leakage hole 7-1 communicates with the cavity for recovering toner. An air extraction port is opened on the side wall of the toner recovery box 7, and the air extraction port communicates with the cavity for recovering toner. An air extractor 9 is installed at the air extraction port, and a storage bag is sleeved outside the air extractor 9. When the air extractor 9 is started, a negative pressure is formed in the toner recovery box 7. As the carbon brush to be ground is ground, the toner falling from the carbon brush to be ground is sucked into the toner recovery box 7 through the toner leakage hole 7-1 to achieve the recovery of toner.

[0031] As Figure 1 shown, the carbon brush driving mechanism 2 is mounted on the other support base 8 and is drivingly connected to the linkage rod 1. The carbon brush driving mechanism 2 can drive the linkage rod 1 to translate along the arc-shaped guiding slideway 8-1. Specifically, the carbon brush driving mechanism 2 includes a driving motor 2-1, a gear 2-2, and an arc-shaped internal rack 2-3. The arc-shaped internal rack 2-3 is mounted on the support base 8 and is fixed. The driving motor 2-1 is mounted on the linkage rod 1 and is drivingly connected to the gear 2-2. The gear 2-2 is meshingly connected to the arc-shaped internal rack 2-3.

[0032] Since the arc surface of the carbon brush may not be centered, sometimes it is a bit to the left of the arc surface and sometimes to the right. Therefore, before grinding, first install the old carbon brush onto the brush holder 4. The arc surface of the old carbon brush fits the arc-shaped grinding surface. Adjust the posture of the brush holder 4 through the old carbon brush, and then fix the brush holder 4 to the linkage rod 1 with screws. Remove the old carbon brush from the brush holder 4, and then insert the new carbon brush into the brush holder 4. In this way, the arc surface ground from the new carbon brush is the same as that of the old carbon brush. During grinding, the driving motor 2-1 drives the gear 2-2 to rotate. Since the arc-shaped internal rack 2-3 is fixed, the gear 2-2 drives the linkage rod 1 to translate along the arc-shaped guide slideway 8-1 under the reverse drive of the arc-shaped internal rack 2-3. The linkage rod 1 drives the carbon brush to be ground to make an arc-shaped translational movement through the brush holder 4. The ground surface of the carbon brush to be ground moves while fitting the arc-shaped grinding surface. When the linkage rod 1 moves to one end of the arc-shaped guide slideway 8-1, it touches the position switch, and the driving motor 2-1 drives the gear 2-2 to rotate in the reverse direction, and the linkage rod 1 translates in the reverse direction, so as to realize the reciprocating movement of the carbon brush to be ground and realize the repeated grinding of the carbon brush to be ground. It should be noted that during grinding, coarse grinding can be first carried out with the coarse sandpaper 3, and then fine grinding can be carried out by replacing it with the fine sandpaper 3 to ensure the fineness of the grinding of the carbon brush surface.

[0033] It can be seen that the carbon brush arc grinding device of this embodiment can realize the mechanical grinding of the carbon brush through the cooperation of the linkage rod 1, the carbon brush drive mechanism 2, the arc-shaped grinding surface, the arc-shaped guide slideway 8-1 and the brush holder 4. At the same time, the old carbon brush is used to adjust the posture of the brush holder 4 to ensure that the arc surface ground from the new carbon brush is the same as the arc surface of the old carbon brush, and ensure the grinding accuracy of the new carbon brush and the use effect of the generator. In addition, the overall structure of this embodiment is delicate and convenient, with low motor energy consumption, so it can be powered by a battery and is convenient to move; when the battery runs out of power, the linkage rod 1 can also be manually pushed and pulled to realize the reciprocating movement of the carbon brush and realize the grinding of the carbon brush, that is, the carbon brush arc grinding device of this embodiment can be used both electrically and manually.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A carbon brush arc grinding device, characterized in that, It includes a linkage rod, arc-shaped guide slides, a carbon brush driving mechanism, an arc-shaped grinding surface, and a brush holder. There are two arc-shaped guide slides arranged side by side front and back. The linkage rod is slidably connected to these two arc-shaped guide slides; the brush holder is mounted on the linkage rod for fixing the carbon brush to be ground. The arc-shaped grinding surface is disposed on one side of the brush holder, and the arc-shaped grinding surface has the same curvature as the arc-shaped guide slide; the carbon brush driving mechanism is drivingly connected to the linkage rod, and the carbon brush driving mechanism drives the linkage rod to move along the arc-shaped guide slide. The linkage rod drives the carbon brush to be ground to fit against the arc-shaped grinding surface and reciprocate through the brush holder, so as to grind the carbon brush to be ground.

2. The carbon brush arc grinding device according to claim 1, characterized in that, The grinding device further includes a support base for supporting the linkage rod. There are two support bases, and these two support bases are arranged side by side front and back. An arc-shaped chute is formed on the upper surface of each support base to serve as the arc-shaped guide slide. A slider is provided on the lower surface of the linkage rod, and the linkage rod is slidably connected to the arc-shaped guide slide through the slider.

3. The carbon brush arc grinding device according to claim 2, wherein, The carbon brush driving mechanism is mounted on one of the support bases, and the arc-shaped grinding surface is provided on the other support base.

4. The carbon brush arc grinding device according to claim 3, characterized in that, The grinding device further includes sandpaper. An arc-shaped support surface is provided on one side of the other support base facing the brush holder, and the sandpaper is attached to the arc-shaped support surface to form the arc-shaped grinding surface.

5. The carbon brush arc grinding device according to claim 1, characterized in that, The carbon brush driving mechanism includes a driving motor, a gear, and an arc-shaped internal rack. The arc-shaped internal rack is arc-shaped and is arranged parallel to one side of the arc-shaped guide slide. The driving motor is mounted on the linkage rod and is drivingly connected to the gear, and the gear is meshingly connected to the arc-shaped internal rack.

6. The carbon brush arc grinding device according to claim 1, characterized in that, The brush holder includes a rectangular clamping cylinder and a coil spring. One end of the coil spring is fixed to the rectangular clamping cylinder, and the other end is inside the rectangular clamping cylinder. The rectangular clamping cylinder is mounted below the linkage rod through bolts.

7. A carbon brush arc grinding device according to claim 1, characterized in that, The grinding device further includes a carbon powder recovery box for recovering carbon powder. The carbon powder recovery box is disposed below the arc-shaped grinding surface and the brush holder. A carbon powder leakage hole is formed on the upper surface of the carbon powder recovery box at the junction of the carbon brush to be ground and the arc-shaped grinding surface.

8. A carbon brush arc grinding device according to claim 7, characterized in that, The inner cavity of the carbon powder recovery box is divided into two cavities. One cavity is used for placing power supply devices, and the other cavity is used for recovering carbon powder.

9. The carbon brush arc grinding device according to claim 8, characterized in that, An exhaust fan is installed at the side wall of the carbon powder recovery box, and a storage bag is sleeved outside the exhaust fan.

10. A carbon brush arc grinding device according to claim 9, characterized in that, A position switch is provided at each end of each arc-shaped guide slide.

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