A portable carbon brush grinding device

Abstract

The application discloses a portable carbon brush grinding device, which comprises a grinding unit, a hand lever, an outer shell, a containing cavity arranged in the outer shell, a fixing assembly and a lifting assembly, the hand lever extends into the containing cavity from the end face of the outer shell, the fixing assembly is arranged in the containing cavity, the lifting assembly is arranged in the containing cavity, the fixing assembly is arranged on the top of the lifting assembly, and an adjusting unit is arranged on the top of the lifting assembly; the adjusting unit comprises a handle, a rotating disc, a fixing groove and a sliding block, the handle extends into the containing cavity from the end face of the outer shell, the fixing groove is fixedly arranged at the bottom of the containing cavity, the sliding block is arranged in the fixing groove, and the rotating disc is arranged at the top of the fixing groove and is fixedly connected with the handle, so that the device is small and portable, simple to operate and capable of grinding carbon brushes of different specifications.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of carbon brush, in particular to a portable carbon brush grinding device. BACKGROUND

[0002] The brush-excited generator set currently adopted has a large amount of carbon brush maintenance during operation, in order to ensure that the carbon brush and the generator slip ring contact surface are in good contact, according to the technical supervision requirements, when the generator carbon brush is replaced during operation, no more than 3 carbon brushes in the same row can be replaced, and the contact area of the carbon brush and the slip ring is required to be not less than 70%. In actual work, due to the existence of the arc of the contact surface of the carbon brush and the slip ring, the equipment operation site and the tool limit, the carbon brush and the slip ring contact grinding cannot meet the requirements, so that the new carbon brush cannot meet the contact area requirement of the slip ring surface, which may cause local overcurrent due to the small contact area of the new carbon brush and the slip ring, and may also cause overcurrent of other carbon brushes, which brings adverse effects to the operation of the generator, therefore, a portable carbon brush grinding device is needed to polish the new carbon brush, so as to replace the carbon brush of the generator set in time. SUMMARY

[0003] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification of the present application in order to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0004] In view of the problems in the prior art, the present application is proposed.

[0005] Therefore, the technical problem to be solved by the present application is that the new carbon brush has no special tool for polishing.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a portable carbon brush grinding device, comprising a polishing unit, the polishing unit comprising a hand lever, an outer shell, a containing cavity arranged in the inner part of the outer shell, a fixing assembly and a lifting assembly, the hand lever extending into the containing cavity from the end face of the outer shell, the fixing assembly being arranged in the containing cavity, the lifting assembly being arranged in the containing cavity, the fixing assembly being arranged on the top of the lifting assembly, and;

[0007] An adjusting unit, the adjusting unit comprising a handle, a rotating disc, a fixing groove and a sliding block, the handle extending into the containing cavity from the end face of the outer shell, the fixing groove being fixedly arranged at the bottom of the containing cavity, the sliding block being arranged in the fixing groove, and the rotating disc being arranged at the top of the fixing groove and fixedly connected with the handle.

[0008] As a preferred scheme of the portable carbon brush grinding device, the hand lever is provided with a first ring piece, a second ring piece, a first threaded line, a second threaded line and a protruding block, the first ring piece, the second ring piece, the first threaded line and the second threaded line are coaxially arranged on the hand lever, and the protruding block is arranged on the bottom end surface of the hand lever.

[0009] As a preferred scheme of the portable carbon brush grinding device, the shell body is provided with a threaded hole, a placing hole and a vertical groove, the threaded hole is arranged on the top end surface of the shell body, the placing hole is arranged on the bottom end surface of the shell body, and the vertical groove is arranged on the inner wall of the shell body.

[0010] As a preferred scheme of the portable carbon brush grinding device, the fixing assembly comprises a circular plate, a first spring, a pressing plate and a fixing block, the circular plate is arranged in the accommodating cavity, one end of the first spring is fixedly connected with the circular plate, and the other end of the first spring is fixedly connected with the pressing plate, and the fixing block is arranged in the placing hole.

[0011] As a preferred scheme of the portable carbon brush grinding device, the lifting assembly comprises a lifting table, a grinding piece, a matched threaded pipe and a first single-sided gear, the lifting table is arranged in the accommodating cavity and located on the top of the rotating disc, the grinding piece is arranged on the lifting table, and the matched threaded pipe is coaxially arranged in the lifting table.

[0012] As a preferred scheme of the portable carbon brush grinding device, the rotating disc is provided with a first special-shaped groove, the grinding piece is provided with a deformation groove, and the sliding block is coaxially arranged in the deformation groove through the first special-shaped groove.

[0013] As a preferred scheme of the portable carbon brush grinding device, the fixing groove is provided with a rubber protruding block, and the rubber protruding block is symmetrically arranged about the center line of the fixing groove.

[0014] As a preferred scheme of the portable carbon brush grinding device, the lifting table is provided with a square groove and a limiting column, the sliding block is embedded in the deformation groove through the square groove, and the limiting column is embedded in the vertical groove.

[0015] As a preferred scheme of the portable carbon brush grinding device, the matched threaded pipe is provided with a threaded groove, a second single-sided gear and a second special-shaped groove, the threaded groove is arranged in the interior of the matched threaded pipe, the second single-sided gear is arranged at the bottom end of the matched threaded pipe, the second special-shaped groove is arranged on the side surface of the matched threaded pipe, the lifting table is further provided with a connecting column, the connecting column is provided with a track rod, and the track rod is embedded in the second special-shaped groove.

[0016] As a preferred scheme of the portable carbon brush grinding device, the first single-sided gear is provided with a second spring, the rotating disc is provided with a column groove, and the second spring is coaxially arranged in the column groove.

[0017] The present application has the advantages of small size, portability, simple operation, and ability to grind carbon brushes of different specifications. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0019] Fig. 1 It is a cross-sectional view of the device in the first embodiment.

[0020] Fig. 2 It is a schematic view of the adjusting unit in the first embodiment.

[0021] Fig. 3 It is a cross-sectional view of the outer shell in the second embodiment.

[0022] Fig. 4 It is a schematic view of the fixing assembly in the second embodiment.

[0023] Fig. 5 It is an exploded schematic view of the lifting assembly in the third embodiment.

[0024] Fig. 6 It is a schematic view of the lifting platform and the threaded pipe in the third embodiment. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the scope of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0027] Second, the "one embodiment" or "an embodiment" referred to herein means a specific feature, structure, characteristic, or combination of features and / or characteristics described herein that can be included in at least one implementation of the present application. The various appearances of "in one embodiment" or "an embodiment" in the specification are not necessarily all referring to the same embodiment.

[0028] Embodiment 1

[0029] With reference to Figs. 1-2 For the first embodiment of the present application, the embodiment provides a portable carbon brush grinding device, characterized in that: comprising a grinding unit 100, the grinding unit 100 comprising a hand lever 101, an outer shell 102, a containing cavity A arranged inside the outer shell 102, a fixing assembly 103 and a lifting assembly 104, the hand lever 101 extending into the containing cavity A from the end face of the outer shell 102, the fixing assembly 103 arranged in the containing cavity A, the lifting assembly 104 arranged in the containing cavity A, the fixing assembly 103 arranged on the top of the lifting assembly 104, and;

[0030] An adjusting unit 200, the adjusting unit 200 comprising a handle 201, a rotating disc 202, a fixed groove 203 and a sliding block 204, the handle 201 extending into the containing cavity A from the lower end face of the outer shell 102, the fixed groove 203 fixedly arranged at the bottom of the containing cavity A, the sliding block 204 arranged to slide in the fixed groove 203, and the rotating disc 202 arranged on the top of the fixed groove 203 and fixedly connected with the handle 201.

[0031] When using the device, first, place the carbon brush to be ground in the placement hole 102b, then rotate the handle 201, the handle 201 being fixedly connected with the rotating disc 202, so the rotating disc 202 also rotates, through the cooperation of the fixed groove 203 and the sliding block 204, the sliding blocks 204 symmetrically arranged at both ends of the grinding sheet 104b approach each other, and then the grinding sheet 104b is adjusted to the required bending amplitude of the carbon brush, then rotate the hand lever 101, the hand lever 101 rotates and advances into the inner part of the outer shell 102, and then the fixing assembly 103 is pressed on the carbon brush, so that the carbon brush is fixed in the placement hole 102b, at the same time, the hand lever 101 rotates and advances while cooperating with the lifting assembly 104, so that the rotating force of the hand lever 101 is converted into the up-and-down movement force of the lifting assembly 104, finally, through rapidly rotating the hand lever 101, the grinding sheet 104 rapidly moves up and down, and then the grinding sheet 104 continuously grinds the carbon brush, until the carbon brush is ground to the same amplitude as the grinding sheet 104, after the grinding is completed, only need to rotate the hand lever 101 in the opposite direction, so as to move the fixing assembly 103 upward, and then the carbon brush can be separated from the placement hole 102b.

[0032] Embodiment 2

[0033] With reference toFigs. 3-4 For the second embodiment of the application, which is based on the previous embodiment, the hand lever 101 is provided with a first ring piece 101a, a second ring piece 101b, a first threaded line 101c, a second threaded line 101d and a protrusion 101e. The first ring piece 101a, the second ring piece 101b, the first threaded line 101c and the second threaded line 101d are coaxially arranged on the hand lever 101. The protrusion 101e is arranged on the bottom end surface of the hand lever 101. The first ring piece 101a functions to ensure that the hand lever 101 is limited in position while continuing to rotate when the hand lever 101 is rotated and moved downward to the maximum distance, preventing the hand lever 101 from continuing to move downward. The second ring piece 101b functions to drive the pressing plate 103c to move downward while the hand lever 101 moves downward. The first threaded line 101c cooperates with the threaded hole 102a, and the second threaded line 101d cooperates with the threaded groove on the inner wall of the cooperating threaded tube 104c.

[0034] The outer shell 102 is provided with a threaded hole 102a, a placement hole 102b and a vertical groove 102c. The threaded hole 102a is arranged on the top end surface of the outer shell 102. The placement hole 102b is arranged on the bottom end surface of the outer shell 102. The vertical groove 102c is arranged on the inner wall of the outer shell 102. The threaded hole 102a cooperates with the hand lever 101. The placement hole 102b is used for placing the carbon brush. The vertical groove 102c limits the lifting platform 104a, so that it moves up and down only within the range of the vertical groove 102c.

[0035] In more detail, the fixing assembly 103 includes a circular plate 103a, a first spring 103b, a pressing plate 103c and a fixing block 103d. The circular plate 103a is arranged in the accommodation cavity A. One end of the first spring 103b is fixedly connected to the circular plate 103a, and the other end is fixedly connected to the pressing plate 103c. The fixing block 103d is arranged in the placement hole 102b. The downward movement of the second ring piece 101b will press down the circular plate 103a. At this time, the pressing plate 103c will contact the fixing block 103d, forming a space that is sealed on the four sides and open at both ends. Continuing to press down the circular plate 103a will compress the first spring 103b. The pressure exerted by the pressing plate 103c on the fixing block 103d will increase, so that the carbon brush placed in the fixing block 103d is firmly pressed in, thereby achieving the fixation of the carbon brush.

[0036] Further, the lifting assembly 104 comprises a lifting platform 104a, a polishing piece 104b, a matching threaded tube 104c and a first single-sided gear 104d. The lifting platform 104a is arranged in the accommodating cavity A and on the top of the rotating disc 202. The polishing piece 104b is arranged on the lifting platform 104a. The matching threaded tube 104c is coaxially arranged in the lifting platform 104a. In the process of fixing the carbon brush by the fixing assembly 103, the second threaded line 101d on the hand lever 101 also matches the inner wall threaded groove of the matching threaded tube 104c. However, since the first single-sided gear 104d is embedded with the second single-sided gear 104c-2, the matching threaded tube 104c will not rotate with the hand lever 101. In the process of rotating and moving down of the hand lever 101, the protrusion 101e at the bottom of the hand lever 101 will contact the second single-sided gear 104c-2. The protrusion 101e will press the second single-sided gear 104c-2 so that the first single-sided gear 104d is disengaged with the second single-sided gear 104c-2. At this time, the hand lever 101 continues to rotate, and the matching threaded tube 104c will rotate with the hand lever 101. The rotation of the matching threaded tube 104c will realize the up and down movement of the lifting platform 104a.

[0037] Embodiment 3

[0038] With reference to Figs. 5-6 For the third embodiment of the present application, the rotating disc 202 is provided with a first special-shaped groove 202a, and the polishing piece 104b is symmetrically provided with a deformation groove 104b-1 corresponding to the two sliding blocks 204. The sliding block 204 is coaxially arranged in the deformation groove 104b-1 through the first special-shaped groove 202a. When the rotating disc 202 rotates, the sliding block 204 will move along the track of the first special-shaped groove 202a. Since the sliding block 204 is arranged in the fixing groove 203, the sliding block can only move along the groove in the fixing groove 203. Since the two sliding blocks 204 are symmetrically arranged on the rotating disc 202, the moving tracks of the two sliding blocks 204 are gradually close to each other. Since the two sliding blocks 204 are correspondingly arranged in the deformation groove 104b-1, the two deformation grooves 104b-1 can be close to each other, thereby changing the bending amplitude of the polishing piece 104b.

[0039] More specifically, the fixed groove 203 is provided with rubber bumps 203a, which are symmetrically arranged about the center line of the fixed groove 203. Each side of the rubber bumps 203a is provided with three rubber bumps. The rubber bumps 203a are arranged to correspond to the bending amplitude of three specifications of the polishing sheet 104b, so as to facilitate the adjustment of the specifications of the carbon brush to be polished according to the needs when polishing the carbon brush, thereby improving the work efficiency. The rubber bumps 203a are used to flexibly change the force on the hand when the handle 201 is rotated by hand, so that the transverse movement of the sliding block 204 is greater than the friction force between the sliding block 204 and the rubber bumps 203a, so that the sliding block 204 can smoothly cross the rubber bumps 203a. The resilience generated by the bending of the polishing sheet 104b cannot overcome the friction force between the sliding block 204 and the rubber bumps 203a, so the sliding block 204 will be limited between the rubber bumps 203a, and only by controlling the force on the hand to rotate the turntable 202 to reset the sliding block 204.

[0040] Further, the lifting platform 104a is provided with a square groove 104a-1 and a limiting column 104a-2. The sliding block 204 passes through the square groove 104a-1 and is embedded in the deformation groove 104b-1. The limiting column 104a-2 is embedded in the vertical groove 102c. The polishing sheet 104b is arranged in the middle of the lifting platform 104a. The square groove 104a-1 can not affect the lifting platform 104a when the sliding block 204 moves. The limiting column 104a-2 further limits the lifting platform 104a, so that the lifting platform 104a can only move up and down in the vertical groove 102c.

[0041] The matching screw pipe 104c is provided with a threaded groove 104c-1, a second single-sided gear 104c-2 and a second special-shaped groove 104c-3. The threaded groove 104c-1 is arranged in the interior of the matching screw pipe 104c. The second single-sided gear 104c-2 is arranged at the bottom end of the matching screw pipe 104c. The second special-shaped groove 104c-3 is arranged at the side of the matching screw pipe 104c. The lifting platform 104a is further provided with a connecting column 104a-3. The connecting column 104a-3 is provided with a track rod 104a-4. The track rod 104a-4 is embedded in the second special-shaped groove 104c-3. When the second threaded line 101d on the hand lever 101 contacts and matches the threaded groove 104c-1, the bottom of the matching screw pipe 104c is provided with the second single-sided gear 104c-2. At this time, the second single-sided gear 104c-2 is embedded with the first single-sided gear 104d. The first single-sided gear 104d is fixedly connected with the rotating disc 202. Therefore, at this time, the matching screw pipe 104c will not rotate with the hand lever 101. The hand lever 101 will rotate into the interior of the matching screw pipe 104c. When the second threaded line 101d on the hand lever 101 rotates to the bottom of the matching screw pipe 104c, the protrusion 101e on the hand lever 101 will press the first single-sided gear 104d. The first single-sided gear 104d is provided with the second spring 104d-1. Therefore, the first single-sided gear 104d will be pressed and shrunk downward. When the first single-sided gear 104d and the second single-sided gear 104c-2 are pressed and disengaged, the hand lever 101 is continuously shaken. At this time, the matching screw pipe 104c will rotate with the hand lever 101. Since the outer wall of the matching screw pipe 104c is provided with the second special-shaped groove 104c-3, the track rod 104a-4 is embedded in the second special-shaped groove 104c-3. When the matching screw pipe 104c rotates, the track rod 104a-4 will move up and down along the track of the second special-shaped groove 104c-3. In turn, the entire lifting platform 104a will continuously move up and down. The sliding block 204 is slidingly connected with the deformation groove 104b-1. Therefore, the polishing piece 104b can move up and down along with the up-and-down movement of the lifting platform 104a.

[0042] The first single-sided gear 104d is provided with the second spring 104d-1. The rotating disc 202 is provided with a column groove 202b. The second spring 104d-1 is coaxially arranged in the column groove 202b. After the polishing is completed, the first single-sided gear 104d will rebound under the action of the second spring 104d-. Since the teeth on the first single-sided gear 104d are arranged in the shape as shown in the drawing, the first single-sided gear 104d and the second single-sided gear 104c-2 will be more easily embedded together when they contact. The situation of being stuck will not occur.

[0043] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A portable carbon brush grinding device, characterized by: The polishing unit (100) comprises a hand lever (101), an outer shell (102), a containing cavity (A) arranged inside the outer shell (102), a fixing assembly (103) and a lifting assembly (104), the hand lever (101) extends into the containing cavity (A) from the end face of the outer shell (102), the fixing assembly (103) is arranged in the containing cavity (A), the lifting assembly (104) is arranged in the containing cavity (A), and the fixing assembly (103) is arranged on the top of the lifting assembly (104); and The adjusting unit (200) comprises a handle (201), a rotating disc (202), a fixing groove (203) and a sliding block (204), the handle (201) extends into the containing cavity (A) from the end face of the outer shell (102), the fixing groove (203) is fixedly arranged at the bottom of the containing cavity (A), the sliding block (204) is arranged in the fixing groove (203), and the rotating disc (202) is arranged at the top of the fixing groove (203) and is fixedly connected with the handle (201); The lifting assembly (104) comprises a lifting platform (104a), a polishing disc (104b), a matching threaded pipe (104c) and a first single-sided gear (104d), the lifting platform (104a) is arranged in the containing cavity (A) and located at the top of the rotating disc (202), the polishing disc (104b) is arranged on the lifting platform (104a), and the matching threaded pipe (104c) is coaxially arranged in the lifting platform (104a); The matching threaded pipe (104c) is provided with a threaded groove (104c-1), a second single-sided gear (104c-2) and a second special-shaped groove (104c-3), the threaded groove (104c-1) is arranged in the matching threaded pipe (104c), the second single-sided gear (104c-2) is arranged at the bottom end of the matching threaded pipe (104c), and the second special-shaped groove (104c-3) is arranged on the side of the matching threaded pipe (104c); the lifting platform (104a) is further provided with a connecting column (104a-3), the connecting column (104a-3) is provided with a track rod (104a-4), and the track rod (104a-4) is embedded in the second special-shaped groove (104c-3); The first single-sided gear (104d) is provided with a second spring (104d-1), the rotating disc (202) is provided with a column groove (202b), and the second spring (104d-1) is coaxially arranged in the column groove (202b). The hand lever (101) is provided with a first ring piece (101a), a second ring piece (101b), a first threaded line (101c), a second threaded line (101d) and a protruding block (101e), the first ring piece (101a), the second ring piece (101b), the first threaded line (101c) and the second threaded line (101d) are coaxially arranged on the hand lever (101), and the protruding block (101e) is arranged on the bottom end face of the hand lever (101).

2. A portable carbon brush grinding device as claimed in claim 1, wherein: ​ 3. A portable carbon brush grinding device as claimed in claim 1 or 2, characterised in that: The outer shell (102) is provided with a threaded hole (102a), a placement hole (102b) and a vertical groove (102c), the threaded hole (102a) is arranged on the top end face of the outer shell (102), the placement hole (102b) is arranged on the bottom end face of the outer shell (102), and the vertical groove (102c) is arranged on the inner wall of the outer shell (102).

4. A portable carbon brush grinding device as claimed in claim 3, wherein: The fixing assembly (103) comprises a circular plate (103a), a first spring (103b), a pressing plate (103c) and a fixing block (103d), the circular plate (103a) is arranged in the accommodating cavity (A), one end of the first spring (103b) is fixedly connected with the circular plate (103a), the other end is fixedly connected with the pressing plate (103c), and the fixing block (103d) is arranged in the placement hole (102b).

5. A portable carbon brush grinding device as claimed in claim 3 or 4, characterised in that: The rotating disc (202) is provided with a first special-shaped groove (202a), the grinding piece (104b) is provided with a deformation groove (104b-1), and the sliding block (204) is coaxially arranged in the deformation groove (104b-1) through the first special-shaped groove (202a).

6. A portable carbon brush grinding device as claimed in claim 5, wherein: The fixing groove (203) is provided with a rubber protrusion (203a), and the rubber protrusion (203a) is symmetrically arranged about the center line of the fixing groove (203).

7. A portable carbon brush grinding device as claimed in claim 6, wherein: The lifting platform (104a) is provided with a square groove (104a-1) and a limiting column (104a-2), the sliding block (204) is embedded in the deformation groove (104b-1) through the square groove (104a-1), and the limiting column (104a-2) is embedded in the vertical groove (102c).

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