CN210499652U

CN210499652U - Carbon brush grinding device

Info

Publication number: CN210499652U
Application number: CN201921326628.5U
Authority: CN
Inventors: 魏子征; 杨殿力; 李升�; 李永锋; 宋海新; 晏小东; 代永生; 张云浩; 彭树成
Original assignee: Hebei Jinxi Steel Sheet Pile Steel Technology Co ltd
Current assignee: Hebei Jinxi Steel Sheet Pile Steel Technology Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-05-12
Anticipated expiration: 2029-08-15

Abstract

The utility model provides a carbon brush grinds device belongs to motor carbon brush technical field, include: the bottom plate, the arc plate and the carbon brush connecting mechanism; two ends of the arc plate are connected with the bottom plate, and the outer side surface of the arc plate is of a cambered surface structure and is used for abutting against abrasive paper; and the carbon brush connecting mechanism is arranged on the outer side surface of the arc plate, is used for connecting a carbon brush, has the degree of freedom for driving the carbon brush to approach the arc plate, and is used for keeping the carbon brush in close contact with the abrasive paper. The utility model provides a carbon brush grinds device, the cost of manufacture is low, has improved the degree of coincide of carbon brush and sliding ring excircle to need not artifical handheld carbon brush and grind, improved work efficiency.

Description

Carbon brush grinding device

Technical Field

The utility model belongs to the technical field of the motor carbon brush, more specifically say, relate to a carbon brush grinds device.

Background

The carbon brush is used on a commutator or a slip ring of a motor as a sliding contact body for leading out and leading in current, has good electric conduction, heat conduction and lubrication performance, and has certain mechanical strength and the instinct of commutation spark. The fit degree of the electric brush and the outer circle of the slip ring has important influence on the performance and the running reliability of the motor. At present, when the carbon brush is ground, the carbon brush and abrasive paper are held by hands and are ground by using the abrasive paper, the matching degree of the carbon brush and the outer circle of the slip ring needs to be observed repeatedly, so that the precision of the finally ground carbon brush is low, the matching degree of the finally ground carbon brush and the outer circle of the slip ring is low, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carbon brush grinds device aims at solving artifical handheld carbon brush and polishes and the carbon brush that causes and the identical degree of sliding ring excircle is low to the problem that work efficiency is low.

In order to achieve the above object, the utility model adopts the following technical scheme: the carbon brush grinding device comprises a bottom plate, an arc plate and a carbon brush connecting mechanism; two ends of the arc plate are connected with the bottom plate, and the outer side surface of the arc plate is of a cambered surface structure and is used for abutting against abrasive paper; and the carbon brush connecting mechanism is arranged on the outer side surface of the arc plate, is used for connecting a carbon brush, has the degree of freedom for driving the carbon brush to approach the arc plate, and is used for keeping the carbon brush in close contact with the abrasive paper.

Further, the carbon brush connecting mechanism includes:

the connecting plate is arranged in parallel with the axis of the arc plate; and the carbon brush frames are arranged on the connecting plate in parallel and are respectively connected with the connecting plate, and elastic elements for driving the carbon brushes to approach the arc plate are arranged in the carbon brush frames.

Furthermore, the outer side surface of the arc plate comprises a plurality of arc surface structures with different radians, and the connecting plate is connected with the arc plate in a sliding manner.

Further, the carbon brush grinding device further includes:

one end of the telescopic rod is rotatably connected with the bottom plate and has the freedom degree of axial expansion along the telescopic rod; and the connecting plate connecting mechanism is connected with the other end of the telescopic rod and is rotationally connected with the connecting plate.

Further, the carbon brush grinding device further includes:

and the limiting ring is connected with the bottom plate in a sliding manner, is connected with the telescopic rod in a rotating manner, and limits the displacement of the telescopic rod along the direction vertical to the bottom plate.

Further, the telescopic rod comprises:

one end of the sliding rod is connected with the connecting mechanism of the connecting plate; and

one end of the sleeve is rotatably connected with the limiting ring, a sliding cavity used for accommodating the sliding rod is arranged in the sleeve, and a first fastening structure used for fixing the sliding rod in the sliding cavity is arranged in the sleeve; and the limiting ring is provided with a second fastening structure for fixing the rotation angle of the sleeve and a third fastening structure for fixing the limiting ring on the bottom plate.

Further, the circular arc flange edge is equipped with a plurality of locating holes, connecting plate coupling mechanism still includes:

the positioning device comprises a positioning plate, a positioning pin and a rotating seat; the positioning plate is connected with the telescopic rod and is provided with a second positioning hole which is aligned with the first positioning hole; the positioning pin penetrates through the first positioning hole and the second positioning hole respectively and is used for fixing the positioning plate and the arc plate; and the rotating seat is connected with the positioning plate and the connecting plate in a rotating way.

Further, the carbon brush connecting mechanism further includes:

and the limiting plate is connected with the connecting plate, is in tangential contact with the arc plate and is parallel to the surface of the carbon brush to be ground.

Furthermore, the number of the limiting plates is two, and the two limiting plates are respectively positioned at two ends of the connecting plate; the limiting plate is perpendicular to and fixedly connected with the connecting plate.

Furthermore, a carbon brush holder displacement structure is arranged on the connecting plate and used for enabling the carbon brush holder to move along the connecting plate as required.

The utility model provides a carbon brush grinds device's beneficial effect lies in: compared with the prior art, the radius of the arc plate of the utility model is the same as the excircle of the slip ring, the carbon brush connecting mechanism is rotated to the arc structure with the corresponding radius of the arc plate by using the limiting ring and the telescopic rod, the limiting plate and the arc plate are tangent in the rotating process, so that the surface of the carbon brush to be ground is tangent to the abrasive paper on the arc plate, and the matching degree of the ground carbon brush and the excircle of the slip ring is improved; when the carbon brush is ground, the sandpaper is manually held to grind along the cambered surface of the cambered surface structure, the carbon brush is not required to be manually held, the working efficiency is improved, and the manufacturing cost is low.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic front view of a carbon brush grinding apparatus according to an embodiment of the present invention, in which a circular arc plate, a rotating rod, and a bottom plate are partially cross-sectional views;

fig. 2 is a schematic side view of a carbon brush grinding apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is an enlarged schematic view of a structural area a of the carbon brush grinding apparatus according to the embodiment of the present invention.

In the figure: 10. a base plate; 11. a limiting ring; 20. a circular arc plate; 21. a first positioning hole; 22. a first arc surface; 23. a second arc surface; 24. a third cambered surface; 30. a carbon brush connecting mechanism; 31. a connecting plate; 32. a carbon brush holder; 33. a limiting plate; 34. the carbon brush holder is of a deflection structure; 35. a nut; 36. a rotation pin; 37. a bolt; 40. a telescopic rod; 41. a slide bar; 42. a sleeve; 43. a sliding cavity; 50. a connecting plate connecting mechanism; 51. positioning a plate; 52. a second positioning hole; 53. a rotating seat; 60. and a positioning pin.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a carbon brush grinding apparatus according to the present invention will be described. The carbon brush grinding device comprises: the carbon brush connecting mechanism comprises a bottom plate 10, an arc plate 20 and a carbon brush connecting mechanism 30; two ends of the arc plate 20 are connected with the bottom plate 10, and the outer side surface of the arc plate is of an arc surface structure used for simulating the excircle radian of a slip ring of the motor and used for being abutted with abrasive paper; the carbon brush connection mechanism 30 is disposed on an outer side surface of the arc plate 20, is used for connecting a carbon brush, has a degree of freedom for driving the carbon brush to approach the arc plate 20, and is used for keeping the carbon brush in close contact with the sand paper.

When the carbon brush is used, the abrasive paper is firstly plugged or placed between the arc plate 20 and the carbon brush connecting mechanism 30 in a manner of being opposite to the arc plate 20, and then the carbon brush is fixed on the carbon brush connecting mechanism 30, so that the carbon brush is tightly contacted with the middle part of the abrasive paper; when polishing, an operator holds the two ends of the abrasive paper and alternately pulls the two ends of the abrasive paper, so that the middle part of the abrasive paper moves along the arc surface of the arc plate to polish the carbon brush, and the carbon brush is polished to form the arc surface with the same radian as the arc surface at the position corresponding to the arc plate 20.

Compared with the prior art, the carbon brush grinding device provided by the utility model has the advantages that the arc plate 20 with the same diameter as the excircle of the slip ring is arranged on the bottom plate 10, the abrasive paper is positioned between the carbon brush connecting mechanism 30 and the arc plate 20, when the carbon brush connecting mechanism is fixed on the outer side of the arc plate, the carbon brush is fixed in position and is always in close contact with the abrasive paper, the abrasive paper is manually held to grind along the arc surface of the arc plate, the grinding precision and the matching degree with the excircle of the slip ring are improved, the whole structure is simple, the operation is convenient, the manufacturing cost is low, the grinding of a small number of carbon brushes during the maintenance of daily equipment can be met, the economical efficiency is high; the carbon brush connecting mechanism enables an operator to avoid holding the carbon brush to work, and improves the working efficiency.

As a specific embodiment of the carbon brush grinding apparatus provided in the present invention, please refer to fig. 1 and 3, the carbon brush connecting mechanism 30 includes: a connecting plate 31 and a plurality of carbon brush holders 32; the connecting plate 31 is arranged in parallel with the axis of the circular arc plate 20; the carbon brush holders 32 are arranged on the connecting plate 31 in parallel and are respectively connected with the connecting plate 31, elastic elements for driving the carbon brushes to approach the arc plate 20 are arranged in the carbon brush holders 32, and the elastic elements enable the carbon brushes in the carbon brush holders 32 to be always forced to approach the arc plate, so that the carbon brushes are kept in close contact with the abrasive paper; the carbon brush holder 32 is provided with a bolt 37, and the carbon brush holder is fixed by a nut 35 after the bolt passes through the connecting plate 31.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2 and 3, the outer side surface of the arc plate 20 includes a plurality of arc structures with different radians, which are a first arc surface 22, a second arc surface 23, and a second arc surface 24, respectively; the connecting plate 31 is slidably connected with the arc plate 20.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, fig. 2 and fig. 4, the carbon brush grinding apparatus further includes: a telescopic rod 40 and a connecting plate connecting mechanism 50; one end of the telescopic rod 40 is rotatably connected with the bottom plate 10 and has the freedom degree of axial extension along the telescopic rod 40; the connecting plate connecting mechanism 50 is connected with the other end of the telescopic rod 40 and is rotatably connected with the connecting plate 31. A convex rotating pin with a circular section is arranged at the connecting end of the telescopic rod 40 and the bottom plate 10, so that the telescopic rod 40 can rotate around a fixed point; the connecting plate connecting mechanism 50 is rotatably connected with the connecting plate 31 through a rotating pin 36 fixedly connected with the connecting plate 31, and the cross section diameter of the rotating pin 36 is circular.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the limiting ring 11 is slidably connected to the bottom plate 10, so that the limiting ring 11 can slide to a predetermined position on the bottom plate, and the cross-sectional diameter of the limiting ring 11 is the same as the cross-sectional diameter of the protruding rotation pin at one end of the telescopic rod 40, so that the protruding rotation pin can be inserted into the limiting ring 11, so that the telescopic rod 40 can rotate around the axis determined by the limiting ring 11, form a rotational connection, and limit the displacement of the telescopic rod 40 along the direction perpendicular to the bottom plate 10.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the telescopic rod 40 includes: a slide bar 41 and a sleeve 42; one end of the sliding rod 41 is connected with the connecting plate connecting mechanism 50; one end of the sleeve 42 is rotatably connected with the limiting ring 11, and a sliding cavity 43 for accommodating the sliding rod is arranged in the sleeve, so that the sliding rod 41 and the sliding cavity 43 are slidably connected along the axis relative sliding direction. And a first fastening structure for fixing the sliding rod 41 in the sliding cavity 43 is provided, and a second fastening structure for fixing the rotation angle of the sleeve and a third fastening structure for fixing the limiting ring 11 on the bottom plate 10 are provided on the limiting ring 11. When the position-limiting ring 11 moves to the predetermined position of the bottom plate and the telescopic rod 40 rotates to the predetermined angle, the sliding rod 41 and the sleeve 42, the sleeve 42 and the position-limiting ring 11, and the position-limiting ring 11 and the bottom plate 10 are fastened by using bolts.

As a specific embodiment of the carbon brush grinding device provided in the present invention, please refer to fig. 4, the edge of the arc plate 20 is provided with a plurality of first positioning holes 21, the edge of the remaining arc structure is also provided with positioning holes, the cross section of each positioning hole along the tangential direction of the arc structure where the positioning hole is located is circular, and the axes of each positioning hole are located in the same vertical plane; the connecting plate connecting mechanism 50 further includes: positioning plate 51, positioning pin 60 and rotating base 53; the positioning plate 51 is connected with the telescopic rod 40 and is provided with a second positioning hole 52 aligned with the first positioning hole 21; when the carbon brush needs to be ground to a specific radius, the telescopic rod 40 is used for rotating the connecting plate connecting mechanism 50 to the arc-shaped structure with the corresponding radius, so that the first positioning hole is aligned with the second positioning hole, and the positioning pin 60 respectively penetrates through the first positioning hole 21 and the second positioning hole 52, so that the connecting plate connecting mechanism 50 is positioned at the arc-shaped structure with the radius; the rotating base 53 is provided with a circular through hole with the same diameter as the cross section of the rotating pin 36 fixedly connected with the connecting plate 31, is rotatably connected with the connecting plate 31 and is connected with the positioning plate 51.

As a specific embodiment of the carbon brush grinding apparatus provided in the present invention, please refer to fig. 3 and 4, the carbon brush connecting mechanism 30 further includes: the limiting plate 33 is connected with the connecting plate 31 and used for being in tangential contact with the arc plate 20 and being parallel to the surface to be ground of the carbon brush, the arc plate 20 is formed by connecting arc structures with different radiuses in multiple sections, the circle centers of the arc structures are different in position, and when the limiting plate 33 enables the connecting plate 31 to rotate to any preset position, the surface to be ground of the carbon brush can be located on the tangent plane of the arc structure where the carbon brush is located all the time.

As a specific embodiment of the carbon brush grinding device provided in the present invention, please refer to fig. 1 and 3, the number of the limiting plates 33 is two, and the two limiting plates 33 are respectively located at two ends of the connecting plate 31; the limiting plate 33 is perpendicular to and fixedly connected with the connecting plate 31. The two limiting plates 33 are respectively located at two ends of the connecting plate 31 and cushion the connecting plate 31, so that a gap through which abrasive paper can pass is formed between the connecting plate 31 and the arc plate 20, and abrasion caused by friction between the connecting plate 31 and the abrasive paper is avoided.

As a specific embodiment of the carbon brush grinding apparatus provided in the present invention, please refer to fig. 1, a carbon brush holder displacement structure 34 is disposed on the connecting plate 31 for moving the carbon brush holder 32 along the connecting plate 31 as required. The carbon brush holder displacement framework 34 is a plurality of grooves, and when the size of the carbon brush to be ground changes, the positions of the carbon brush holder connected with the carbon brush holder can move up and down correspondingly along with the up-and-down movement of the bolts 37 in the grooves along with the change of the size of the carbon brush holder.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Carbon brush grinds device, its characterized in that includes:

a base plate (10);

the two ends of the arc plate (20) are connected with the bottom plate (10), and the outer side surface of the arc plate is of a cambered surface structure and is used for abutting against abrasive paper; and

and the carbon brush connecting mechanism (30) is arranged on the outer side surface of the arc plate (20) and used for connecting a carbon brush, has the degree of freedom for driving the carbon brush to approach the arc plate (20) and is used for keeping the carbon brush in close contact with the abrasive paper.

2. The carbon brush grinding apparatus according to claim 1, wherein the carbon brush attachment mechanism (30) includes:

the connecting plate (31) is arranged in parallel with the axis of the arc plate (20); and

and the carbon brush holders (32) are arranged on the connecting plate (31) in parallel and are respectively connected with the connecting plate, and elastic elements for driving the carbon brushes to approach the arc plate (20) are arranged in the carbon brush holders (32).

3. The carbon brush grinding apparatus according to claim 2, wherein an outer side surface of the arc plate (20) includes a plurality of arc surface structures having different radians, and the connecting plate (31) is slidably connected to the arc plate (20).

4. The carbon brush grinding apparatus according to claim 3, further comprising:

one end of the telescopic rod (40) is rotatably connected with the bottom plate (10) and has the freedom degree of axial expansion along the telescopic rod (40); and

and the connecting plate connecting mechanism (50) is connected with the other end of the telescopic rod (40) and is rotationally connected with the connecting plate (31).

5. The carbon brush grinding apparatus according to claim 4, further comprising:

and the limiting ring (11) is connected with the bottom plate (10) in a sliding manner, is connected with the telescopic rod (40) in a rotating manner, and limits the displacement of the telescopic rod (40) along the direction vertical to the bottom plate (10).

6. The carbon brush grinding apparatus according to claim 5, wherein the telescopic rod (40) includes:

one end of the sliding rod (41) is connected with the connecting plate connecting mechanism (50); and

one end of the sleeve (42) is rotatably connected with the limiting ring (11), a sliding cavity (43) for accommodating the sliding rod is arranged in the sleeve, and a first fastening structure for fixing the sliding rod (41) in the sliding cavity (43) is arranged in the sleeve; and a second fastening structure for fixing the rotation angle of the sleeve and a third fastening structure for fixing the limiting ring (11) on the bottom plate (10) are arranged on the limiting ring (11).

7. The carbon brush grinding apparatus according to claim 4, wherein the edge of the circular arc plate (20) is provided with a plurality of first positioning holes (21), and the connecting plate connecting mechanism (50) further includes:

the positioning plate (51) is connected with the telescopic rod (40) and is provided with a second positioning hole (52) aligned with the first positioning hole (21);

the positioning pins (60) respectively penetrate through the first positioning holes (21) and the second positioning holes (52) and are used for fixing the positioning plates and the circular arc plates (20);

and the rotating seat (53) is connected with the positioning plate and is rotationally connected with the connecting plate (31).

8. The carbon brush grinding apparatus according to claim 2, wherein the carbon brush attachment mechanism (30) further includes:

and the limiting plate (33) is connected with the connecting plate (31) and is used for being in tangential contact with the arc plate (20) and being parallel to the surface of the carbon brush to be ground.

9. The carbon brush grinding apparatus according to claim 8, wherein the number of the limit plates (33) is two, and the two limit plates (33) are respectively located at both ends of the connection plate (31); the limiting plate (33) is perpendicular to and fixedly connected with the connecting plate (31).

10. The carbon brush grinding apparatus according to claim 2, wherein the connecting plate (31) is provided with a carbon brush holder displacement structure (34) for displacing the carbon brush holder (32) along the connecting plate (31) as required.