CN-118181020-B - Carbon brush end face grinding device

CN118181020BCN 118181020 BCN118181020 BCN 118181020BCN-118181020-B

Abstract

The present disclosure relates to a carbon brush end face grinding device, which includes a device body, a clamping and fixing device, a grinding assembly, a pushing assembly, and a sliding assembly. The clamping and fixing device is connected to the device body, and is used for fixing the new carbon brush and the old carbon brush on the device body and is arranged side by side in the first direction. The grinding assembly comprises a driving piece, a cutter shaft and a profiling abutting shaft, wherein the cutter shaft and the profiling abutting shaft extend along a second direction and are arranged side by side in a first direction, the cutter shaft is used for being in contact with a to-be-ground end of a new carbon brush, and the profiling abutting shaft is used for being in contact with a profiled end of an old carbon brush. The pushing component is used for driving the cutter shaft and the profiling abutting shaft to move so as to simultaneously abut against the new carbon brush and the old carbon brush respectively. The pushing component is connected to the sliding component, and the sliding component can drive the pushing component to move along the first direction, so that the cutter shaft can grind an arc which is the same as the contoured end of the old carbon brush at the end to be ground of the new carbon brush.

Inventors

WANG JUNKUI
WANG XIN
CHEN GANGGANG
MENG JIANGONG
FU JUNCHANG
YUAN WEIFENG
LV JIANGTAO
ZHENG FENG
LI MENG

Assignees

国能济源热电有限公司

Dates

Publication Date: 20260512
Application Date: 20240322

Claims (8)

1. A carbon brush end face grinding device, characterized by comprising: A device body; The clamping and fixing device is connected to the device body and is used for fixing the new carbon brush and the old carbon brush on the device body and is arranged side by side in the first direction; The grinding assembly comprises a driving piece, a cutter shaft and a profiling abutting shaft, wherein the cutter shaft and the profiling abutting shaft extend along a second direction and are arranged side by side in a first direction, the cutter shaft is used for being in contact with a to-be-ground end of the new carbon brush, the profiling abutting shaft is used for being in contact with a profiled end of the old carbon brush, and the driving piece can drive the cutter shaft to grind the new carbon brush; The pushing assembly is used for driving the cutter shaft and the profiling abutting shaft to move so as to respectively and simultaneously abut against the new carbon brush and the old carbon brush; The sliding component is arranged on the device body, the pushing component is connected with the sliding component, the sliding component can drive the pushing component to move along the first direction, The pushing assembly comprises a support plate, a connecting rod and an elastic piece, the profiling abutting shaft and the cutter shaft are arranged on the support plate, a first end of the connecting rod is rotationally connected with the sliding assembly around a first rotation axis, a second end of the connecting rod is rotationally connected with the support plate around a second rotation axis, two ends of the elastic piece are respectively connected with the first end of the connecting rod and the sliding assembly, and the elastic piece can generate acting force for driving the first end of the connecting rod to rotate around the first rotation axis so as to drive the support plate to move towards the clamping and fixing device; wherein the first rotational axis and the second rotational axis both extend in the second direction, In the third direction, the sliding component, the pushing component and the clamping and fixing device are arranged at intervals, in the second direction, the device body is positioned below the clamping and fixing device, a concave part is formed at the top of the device body, the concave part is recessed inwards along the second direction, in the second direction, the cutter shaft and the profiling abutting shaft extend into the concave part from the bottom of the shaft, and the concave part can be used for extending new carbon brushes and old carbon brushes; In the first direction, the end face of the cutter shaft, which faces one end of the new carbon brush, is flush with the end face of the profiling abutting shaft, which faces one end of the old carbon brush; the second direction is a vertical direction, and the first direction and the third direction are horizontal directions and are mutually perpendicular.
2. The carbon brush end face grinding apparatus according to claim 1, wherein a chute extending in the first direction is provided on the stay, the profiling abutment shaft is slidably connected to the chute, a nut is screwed on the profiling abutment shaft, and the profiling abutment shaft is unlocked by the nut to be locked on the stay.
3. The carbon brush end face grinding apparatus according to claim 1, wherein the number of the links is two, and the two links are arranged in parallel, at least one of the links being connected with the elastic member.
4. The carbon brush end face grinding apparatus according to claim 1, wherein the sliding assembly includes a slider and a slide rail, the slide rail is provided on the apparatus body and extends in the first direction, the slider is slidably connected to the slide rail, and the first end of the link is rotatably connected to the slider.
5. The carbon brush end face grinding apparatus according to claim 1, wherein the elastic member is a torsion spring, and both ends of the torsion spring are respectively connected with the first end of the connecting rod and the sliding assembly.
6. The carbon brush end face grinding apparatus according to claim 1, wherein the clamp fixing means includes a support plate provided on the apparatus body and two clamp pieces located on both sides of the support plate, respectively, in a first direction; Each clamping piece comprises a push plate, a fixing plate and a screw rod, the fixing plates are arranged on the device body, the push plates are parallel to the supporting plates and arranged between the fixing plates and the supporting plates, the fixing plates are formed with threaded holes matched with the screw rods in threads, the screw rods extend along the first direction, and one ends of the screw rods penetrate through the threaded holes to be connected with the push plates.
7. The carbon brush end face grinding device according to claim 1, wherein the device body is provided as a dust collection box, a chamber is provided in the device body, and a carbon powder collection port communicating with the chamber is provided in the recess.
8. The carbon brush end face grinding apparatus according to claim 7, wherein an exhaust fan is provided in the chamber, and an inlet of the exhaust fan communicates with the carbon powder collecting port.

Description

Carbon brush end face grinding device Technical Field The disclosure relates to the technical field of carbon brush machining tools, in particular to a carbon brush end face grinding device. Background Carbon brushes are widely used in motors and generators. In maintenance of a generator excitation system, the old carbon brush with less abrasion surplus is frequently needed to be replaced by the new carbon brush, but the end of the new carbon brush is a plane, and the end of the new carbon brush is not worn in with a generator rotor slip ring, so that the contact area is small, and spark and even ring fire are easy to generate in the operation of the generator. Therefore, when the carbon brush of the generator is replaced, the end head of the new carbon brush needs to be ground or cut so as to form an arc-shaped end face which is matched with the slip ring. In the related art, the mode of carrying out arc-shaped end surface pretreatment on the carbon brush mainly comprises manual polishing and machine polishing, and the mode of polishing by a machine is to grind by utilizing a grinding device designed by a rotating or reciprocating mechanism consisting of a sand paper tape, a grinding disc, a grinding ring and an arc-shaped surface. However, the angle adjustment of the carbon brush and the grinding tool is complicated, and the arc-shaped end face matched with the slip ring is very troublesome to polish. Disclosure of Invention The disclosure aims to provide a carbon brush end face grinding device to solve technical problems in related technologies. In order to achieve the above object, the present disclosure provides a carbon brush end face grinding device including: A device body; The clamping and fixing device is connected to the device body and is used for fixing the new carbon brush and the old carbon brush on the device body and is arranged side by side in the first direction; The grinding assembly comprises a driving piece, a cutter shaft and a profiling abutting shaft, wherein the cutter shaft and the profiling abutting shaft extend along a second direction and are arranged side by side in a first direction, the cutter shaft is used for being in contact with a to-be-ground end of the new carbon brush, the profiling abutting shaft is used for being in contact with a profiled end of the old carbon brush, and the driving piece can drive the cutter shaft to grind the new carbon brush; The pushing assembly is used for driving the cutter shaft and the profiling abutting shaft to move so as to respectively and simultaneously abut against the new carbon brush and the old carbon brush; the sliding component is arranged on the device body, the pushing component is connected with the sliding component, and the sliding component can drive the pushing component to move along the first direction. Optionally, the pushing assembly includes a support plate, a connecting rod and an elastic member, the profiling abutting shaft and the cutter shaft are both arranged on the support plate, a first end of the connecting rod is rotationally connected with the sliding assembly around a first rotation axis, a second end of the connecting rod is rotationally connected with the support plate around a second rotation axis, two ends of the elastic member are respectively connected with the first end of the connecting rod and the sliding assembly, and the elastic member can generate acting force for driving the first end of the connecting rod to rotate around the first rotation axis so as to drive the support plate to move towards the clamping and fixing device; wherein the first axis of rotation and the second axis of rotation both extend in the second direction. Optionally, a chute extending along the first direction is formed in the support plate, the profiling abutment shaft is slidably connected to the chute, a nut is in threaded connection with the profiling abutment shaft, and the profiling abutment shaft is unlocked and locked on the support plate through the nut. Optionally, the number of the connecting rods is two, the two connecting rods are arranged in parallel, and at least one connecting rod is connected with the elastic piece. Optionally, the sliding assembly includes a slider and a sliding rail, the sliding rail is disposed on the device body and extends along a first direction, the slider is slidably connected to the sliding rail, and the first end of the connecting rod is rotatably connected to the slider. Optionally, the elastic element is a torsion spring, and two ends of the torsion spring are respectively connected with the first end of the connecting rod and the sliding component. Optionally, the clamping and fixing device comprises a supporting plate and two clamping pieces, wherein the supporting plate is arranged on the device body, and the two clamping pieces are respectively positioned at two sides of the supporting plate in a first direction; Each clamping piece comprises a push plate, a fixing plate a