Series excited motor carbon brush machine

Abstract

The utility model relates to the technical field of series motors, in particular to a series motor carbon brush machine. According to the technical scheme, the series excited motor carbon brush machine comprises a fixed shell, a mounting frame, a carbon brush block, a first elastic piece, a first connecting block, a second elastic piece, a guide frame, a second connecting block, a pressing frame, a second elastic piece and the like. The bottom end of the fixing shell is fixedly connected with a mounting frame, carbon brush blocks are evenly connected to the mounting frame in a sliding mode in the circumferential direction, first connecting blocks are evenly connected to the mounting frame in the circumferential direction, the first connecting blocks correspond to the carbon brush blocks in position, connecting wires are connected between the carbon brush blocks and the first connecting blocks, and first elastic pieces are wound on the connecting wires. According to the utility model, through the components such as the first rotating frame, the blocking rod and the pressing frame, the carbon brush block can be conveniently and rapidly disassembled and taken, and the accurate position of the carbon brush block is ensured, so that the phenomenon that a worker spends too much energy to disassemble and assemble the carbon brush machine is avoided, the practicability of the series excited motor carbon brush machine is improved, and the use experience of a user is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of series-excited motors, in particular to a carbon brush machine for series-excited motors. Background Art

[0002] A series-excited motor is a type of electric motor in which the armature winding and the field winding are connected in series. This design allows current to flow through the armature and the field winding, thereby generating the rotational torque of the motor. The characteristics of a series-excited motor are large starting torque, but the speed varies greatly with the load. It is commonly used in applications that require high starting torque and speed regulation performance, such as power tools and electric vehicles.

[0003] A carbon brush machine, also known as a carbon brush grinder, is a device used for grinding and dressing carbon brushes in an electric motor or generator. A carbon brush is a conductive material used in an electric motor to contact the rotating part, ensuring the transfer of current between the armature and the stator.

[0004] For example, the patent with the patent authorization publication number CN220172986U and the publication date December 12, 2023 discloses a series-excited motor with replaceable carbon brushes, including a carbon brush mechanism and a carbon brush body installed on one side inside the carbon brush mechanism. A cleaning and heat dissipation mechanism is arranged outside the carbon brush mechanism, and a cleaning motor and a rotating motor are arranged inside the cleaning and heat dissipation mechanism. The carbon brush mechanism includes a carbon brush mounting frame. Installation sliding sleeves are symmetrically installed at the top and bottom of the carbon brush mounting frame. An installation sliding groove is formed inside the installation sliding sleeve, and an installation sliding spring is fixedly connected to the bottom of the installation sliding groove. An installation locking rod is slidably connected inside the installation sliding spring. The bottom of the installation locking rod is fixedly connected to an installation connecting rod, and the top of the installation connecting rod is fixedly connected to an installation button. By setting the carbon brush mechanism, not only can the rapid replacement of the carbon brush body be realized, but also, by the elastic force of the compression spring, the carbon brush body is always in contact with the series-excited motor, thereby improving the utilization rate of the carbon brush body. However, this series-excited motor with replaceable carbon brushes realizes the rapid replacement of the carbon brush body by manually pulling the locking rod in opposite directions up and down, which is rather inconvenient.

[0005] Based on the above situation, the utility model proposes a carbon brush machine for series-excited motors that is convenient for disassembly and assembly. Summary of the Utility Model

[0006] In order to overcome the disadvantage in the above-mentioned prior art that it is rather inconvenient to disassemble by manually pulling the locking rod in opposite directions up and down, the utility model provides a carbon brush machine for series-excited motors that is convenient for disassembly and assembly.

[0007] The technical implementation solution of the present utility model is as follows: A series-wound motor carbon brush machine includes a fixed shell, a mounting frame, carbon brush blocks, connecting wires, a first connecting block, a first elastic member, a guiding frame, a second connecting block, a pressing frame, a second elastic member, a first rotating frame, and a blocking rod. The bottom end of the fixed shell is fixedly connected to the mounting frame. The mounting frame is evenly and slidably connected with carbon brush blocks in the circumferential direction. The mounting frame is evenly connected with first connecting blocks in the circumferential direction. The first connecting blocks correspond to the positions of the carbon brush blocks. Connecting wires are connected between the carbon brush blocks and the first connecting blocks. A first elastic member is wound around the connecting wires. The two ends of the first elastic member are respectively connected to the carbon brush blocks and the first connecting blocks. The upper part of the mounting frame is fixedly connected to the guiding frame. The top end of the first connecting block is fixedly connected to a second connecting block. The upper part of the second connecting block is slidably connected with a pressing frame. A second elastic member is wound around the bottom of the pressing frame. The two ends of the second elastic member are respectively connected to the pressing frame and the second connecting block. The top of the fixed shell is fixedly connected to a first rotating frame. The bottom of the first rotating frame is fixedly connected to a blocking rod.

[0008] As a preferred technical solution of the present utility model, it further includes a fixed block, a warning device, a sensor, and a pressing plate. The top of the mounting frame is fixedly connected to a fixed block. A warning device is connected to the top of the fixed block. A sensor is connected to the left part of the warning device. The warning device is electrically connected to the sensor. A pressing plate is fixedly connected to the right part of the carbon brush block.

[0009] As a preferred technical solution of the present utility model, the fixed block is concave-shaped, which is convenient for the pressing plate to pass through the fixed block.

[0010] As a preferred technical solution of the present utility model, it further includes a second rotating frame, a pressing frame, and a third elastic member. The bottom of the first rotating frame is fixedly connected to a second rotating frame. The second rotating frame is slidably connected with a pressing frame. A third elastic member is wound around the pressing frame. The two ends of the third elastic member are respectively connected to the second rotating frame and the pressing frame.

[0011] As a preferred technical solution of the present utility model, the upper part of the pressing frame is L-shaped and the top is inclined, and the lower part is frame-shaped.

[0012] As a preferred technical solution of the present utility model, the material of the blocking rod is polytetrafluoroethylene.

[0013] The beneficial effects of the present utility model:

[0014] 1. Through components such as the first rotating frame, the blocking rod, and the pressing frame, the present utility model can conveniently and quickly disassemble and install the carbon brush blocks, and ensure the accurate positions of the carbon brush blocks, thereby avoiding the need for manual labor to spend too much energy on disassembling and assembling the carbon brush machine, improving the practicality of the series-wound motor carbon brush machine, and also enhancing the user experience.

[0015] 2. The utility model enables workers not to regularly check the wear degree of the carbon brush blocks on the carbon brush machine through the warning device and the extrusion plate. When the carbon brush blocks are worn to only half, it automatically warns the workers to replace the carbon brush blocks, thus improving the practicability of the carbon brush machine of the series-wound motor.

[0016] 3. The utility model enables workers to quickly remove and install the carbon brush machine by only rotating the first rotating frame through the extrusion frame and the third elastic member, thus improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 is a sectional three-dimensional structural schematic diagram of components such as the fixed shell, the mounting frame and the carbon brush block of the utility model.

[0019] Figure 3 is a sectional three-dimensional structural schematic diagram of components such as the connecting wire, the first connecting block and the first elastic member of the utility model.

[0020] Figure 4 is a three-dimensional structural schematic diagram of components such as the mounting frame, the guiding frame and the second connecting frame of the utility model.

[0021] Figure 5 is a three-dimensional structural schematic diagram of components such as the fixed block, the warning device and the inductor of the utility model.

[0022] Figure 6 is a three-dimensional structural schematic diagram of components such as the second rotating frame, the extrusion frame and the third elastic member of the utility model.

[0023] The labels in the figure are: 1: fixed shell; 2: mounting frame; 3: carbon brush block; 4: connecting wire; 5: first connecting block; 6: first elastic member; 7: guiding frame; 8: second connecting block; 9: pressing frame; 10: second elastic member; 11: first rotating frame; 12: blocking rod; 13: fixed block; 14: warning device; 15: inductor; 16: extrusion plate; 17: second rotating frame; 18: extrusion frame; 19: third elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions and advantages of the utility model more clear and understandable, the utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the utility model.

[0025] Embodiment 1

[0026] A series-wound motor carbon brush machine, asFigures 1 - 6 As shown in the figure, it includes a fixed housing 1, a mounting bracket 2, a carbon brush block 3, a connecting wire 4, a first connecting block 5, a first elastic member 6, a guiding bracket 7, a second connecting block 8, a pressing bracket 9, a second elastic member 10, a first rotating bracket 11 and a blocking rod 12. The bottom end of the fixed housing 1 is fixedly connected to the mounting bracket 2. Four carbon brush blocks 3 are evenly and slidably connected to the mounting bracket 2 in the circumferential direction. The carbon brush blocks 3 are used for grinding and trimming the series-wound motor. Four first connecting blocks 5 are evenly connected to the mounting bracket 2 in the circumferential direction. The first connecting blocks 5 correspond to the positions of the carbon brush blocks 3. A connecting wire 4 is connected between the carbon brush block 3 and the first connecting block 5. A first elastic member 6 is wound around the connecting wire 4. Both ends of the first elastic member 6 are respectively connected to the carbon brush block 3 and the first connecting block 5. The upper part of the mounting bracket 2 is fixedly connected to the guiding bracket 7. The guiding bracket 7 is used for positioning the carbon brush block 3. The top end of the first connecting block 5 is fixedly connected to a second connecting block 8. A pressing bracket 9 is slidably connected to the upper part of the second connecting block 8. The upper part of the pressing bracket 9 is L-shaped and the top is inclined, and the lower part is in a frame shape. A second elastic member 10 is wound around the bottom of the pressing bracket 9. Both ends of the second elastic member 10 are respectively connected to the pressing bracket 9 and the second connecting block 8. The top of the fixed housing 1 is fixedly connected to a first rotating bracket 11. A blocking rod 12 is fixedly connected to the bottom of the first rotating bracket 11. The material of the blocking rod 12 is polytetrafluoroethylene, which has an extremely low coefficient of friction and good chemical resistance, facilitating the sliding and extrusion of the blocking rod 12 against the pressing bracket 9.

[0027] Under normal use, when the carbon brush block 3 of the carbon brush machine grinds and trims the series-wound motor, if it wears down to only half of its original length, it needs to be replaced manually in time to avoid a decline in the performance or damage of the series-wound motor. To replace the existing carbon brush block 3, it is necessary to manually unscrew multiple bolts, which is rather troublesome. Therefore, people can use this series-wound motor carbon brush machine that is convenient for disassembly and assembly. First, manually install the carbon brush block 3 onto the mounting bracket 2 so that the carbon brush block 3 and the first connecting block 5 are in a suitable position. Then, manually rotate the first rotating bracket 11 and drive the blocking rod 12 to rotate. The blocking rod 12 presses against the inclined surface of the pressing bracket 9, causing the pressing bracket 9 to move downward and compress the second connecting block 8. The second elastic member 10 is compressed. Subsequently, the second connecting block 8 fixes the first connecting block 5, thereby fixing the position of the carbon brush block 3. Initially, the first elastic member 6 is in its original state. When the commutator of the series-wound motor is inserted between the carbon brush blocks 3, the first elastic member 6 is compressed, causing the carbon brush block 3 to be in contact with and polished against the commutator of the series-wound motor. When the carbon brush block 3 gradually wears shorter due to the abrasion of the commutator of the series-wound motor, the first elastic member 6 will gradually reset to maintain the contact between the carbon brush block 3 and the commutator of the series-wound motor. When the carbon brush block 3 needs to be replaced after wearing to a certain extent, manually rotate the first rotating bracket 11 in the reverse direction and drive the blocking rod 12 to rotate, causing the blocking rod 12 to disengage from the pressing bracket 9. Immediately, the second elastic member 10 will reset and cause the pressing bracket 9 to move upward. At this time, simply move the second connecting block 8, the pressing bracket 9, and the first connecting block 5 outward along the guiding bracket 7, thereby achieving the rapid removal of the carbon brush block 3.

[0028] Embodiment 2

[0029] Based on Embodiment 1, as Figure 2 and Figure 5 shown, it further includes a fixing block 13, a warning device 14, a sensor 15 and a pressing plate 16. The top of the mounting bracket 2 is fixedly connected with the fixing block 13. The fixing block 13 is concave, which is convenient for the pressing plate 16 to pass through the fixing block 13. The top of the fixing block 13 is connected with the warning device 14. The warning device 14 is used for alarm processing. The left part of the warning device 14 is connected with the sensor 15. The warning device 14 is electrically connected with the sensor 15. When the sensor 15 is pressed, it will transmit information to the warning device 14, and the warning device 14 will give an alarm. The right part of the carbon brush block 3 is fixedly connected with the pressing plate 16.

[0030] The wear degree of the carbon brush block 3 on the carbon brush machine needs to be checked manually regularly and then replaced. If not replaced in time, it will cause the performance of the motor to decline or be damaged. When the carbon brush block 3 is worn short to half by the commutator of the series-excited motor, since the first elastic member 6 will gradually reset, and then the carbon brush block 3 will drive the pressing plate 16 to pass through the fixing block 13 and press the sensor 15. When the sensor 15 is pressed, it will transmit information to the warning device 14, and the warning device 14 will emit a warning sound, thus realizing automatic reminder for manual to replace the carbon brush block 3 on the carbon brush machine in time.

[0031] As Figure 2 and Figure 6 shown, it further includes a second rotating frame 17, a pressing frame 18 and a third elastic member 19. The bottom of the first rotating frame 11 is fixedly connected with the second rotating frame 17. Four pressing frames 18 are slidably connected to the second rotating frame 17. The third elastic member 19 is wound around the pressing frame 18. Both ends of the third elastic member 19 are respectively connected to the second rotating frame 17 and the pressing frame 18.

[0032] When removing the carbon brush block 3, it is inconvenient for manual to move it outwards. Therefore, the above components are set. Its working principle is: manually rotate the first rotating frame 11 to drive the second rotating frame 17 to rotate. During the rotation, the blocking rod 12 will disengage from the blocking of the pressing frame 9. Then the second rotating frame 17 will drive the pressing frame 18 to rotate, and the pressing frame 18 will press the pressing frame 9 to move outwards, and then drive the second connecting block 8 and the first connecting block 5 to move outwards, so as to directly eject the carbon brush block 3, which is convenient for replacement. Then after the pressing frame 18 moves away from the pressing frame 9, the third elastic member 19 drives the pressing frame 18 to reset. Immediately, manually remove the worn carbon brush block 3 of the carbon brush machine and install a new carbon brush block 3. Then manually insert the carbon brush block 3 along the guide frame 7 to the original position to the left, and then rotate the first rotating frame 11 to reset, thus realizing that manual only needs to rotate the first rotating frame 11 to take out the carbon brush machine.

[0033] Although the present utility model has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made to the present utility model without departing from the principle and spirit scope defined by the claims. Therefore, the detailed description of the embodiments of this disclosure is only for explanation and not for limiting the present utility model, but the scope of protection is defined by the content of the claims.

Claims

1. A series-excited motor carbon brush machine, characterized in that, It includes a fixed housing (1), a mounting bracket (2), a carbon brush block (3), a connecting wire (4), a first connecting block (5), a first elastic member (6), a guiding bracket (7), a second connecting block (8), a pressing bracket (9), a second elastic member (10), a first rotating bracket (11) and a blocking rod (12). The bottom end of the fixed housing (1) is fixedly connected to the mounting bracket (2). The mounting bracket (2) is connected with the carbon brush blocks (3) in a circumferentially uniform sliding manner. The mounting bracket (2) is connected with the first connecting blocks (5) in a circumferentially uniform manner. The first connecting blocks (5) correspond to the positions of the carbon brush blocks (3). A connecting wire (4) is connected between the carbon brush blocks (3) and the first connecting blocks (5). A first elastic member (6) is wound around the connecting wire (4). Two ends of the first elastic member (6) are respectively connected to the carbon brush blocks (3) and the first connecting blocks (5). The upper part of the mounting bracket (2) is fixedly connected to the guiding bracket (7). The top ends of the first connecting blocks (5) are fixedly connected to the second connecting blocks (8). The upper parts of the second connecting blocks (8) are connected with the pressing brackets (9) in a sliding manner. The bottom of the pressing bracket (9) is wound with a second elastic member (10). Two ends of the second elastic member (10) are respectively connected to the pressing bracket (9) and the second connecting blocks (8). The top of the fixed housing (1) is fixedly connected to the first rotating bracket (11). The bottom of the first rotating bracket (11) is fixedly connected to the blocking rod (12).

2. The carbon brush machine for a series-wound motor according to claim 1, wherein It further includes a fixing block (13), a warning device (14), a sensor (15) and a pressing plate (16). The top of the mounting bracket (2) is fixedly connected to the fixing block (13). The top of the fixing block (13) is connected with the warning device (14). The left part of the warning device (14) is connected with the sensor (15). The warning device (14) is electrically connected to the sensor (15). The right part of the carbon brush block (3) is fixedly connected to the pressing plate (16).

3. The series-wound motor carbon brush machine according to claim 2, characterized in that, The fixing block (13) is concave-shaped to facilitate the pressing plate (16) passing through the fixing block (13).

4. A series-wound motor carbon brush machine according to claim 3, characterized in that, It further includes a second rotating bracket (17), a pressing bracket (18) and a third elastic member (19). The bottom of the first rotating bracket (11) is fixedly connected to the second rotating bracket (17). The second rotating bracket (17) is connected with the pressing bracket (18) in a sliding manner. A third elastic member (19) is wound around the pressing bracket (18). Two ends of the third elastic member (19) are respectively connected to the second rotating bracket (17) and the pressing bracket (18).

5. A series-excited motor carbon brush machine according to claim 4, characterized in that, The upper part of the pressing bracket (9) is L-shaped and the top is beveled, and the lower part is frame-shaped.

6. A series-excited motor carbon brush machine according to claim 5, characterized in that, The material of the blocking rod (12) is polytetrafluoroethylene.

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