Device for detecting wear resistance of copper commutator segment of commutator

Abstract

The utility model relates to a commutator copper commutator segment wear resistance detection device comprising a slide plate, a detection rod is slidably arranged on the slide plate, and an air pressure cylinder is sleeved on the detection rod. According to the utility model, the detection rod is continuously contacted with the commutator segment and can slide for a corresponding distance according to the abrasion loss of the commutator segment, and whether the abrasion loss of the current working time or the working number of turns exceeds the quality requirement is judged according to the pressure states of the detection rod and the air pressure cylinder in different positions in the air pressure cylinder.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of commutator, specifically point to a kind of commutator copper commutator segment wear resistance detection device. BACKGROUND

[0002] The main function of commutator is to change the direction of current, so that the motor can continue to rotate. In a DC motor, the AC current in the armature winding is converted to DC current between the brushes by the brush and the commutator, so that the electromagnetic torque direction is always unchanged, so that the motor continues to run.

[0003] The commutator is composed of multiple commutator segments. In order to ensure the stability of the current, the commutator segment that is in long-term sliding friction contact with the brush needs to have certain wear resistance. When detecting the wear amount of the commutator segment, the current wear amount cannot be judged in real time, and the equipment can only be stopped at the set time or number of turns, and then the wall thickness wear of the commutator segment is detected. The whole detection process has certain hysteresis, and the working time or working number of turns when the commutator segment reaches the wear amount cannot be accurately judged. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a kind of commutator copper commutator segment wear resistance detection device, at least part of the above problems are solved.

[0005] The technical scheme adopted by the utility model is as follows: the utility model provides a kind of commutator copper commutator segment wear resistance detection device, including detection table, motor is fixed on the detection table, the output shaft of motor is fixed with mounting disc, and mounting disc is used to fix the commutator segment to be detected.

[0006] Further, a sliding plate is slidably arranged on the detection table, and a probe rod is slidably arranged on the sliding plate.

[0007] Further, a gas pressure cylinder is arranged on the sliding plate, and the gas pressure cylinder is arranged at one end of the probe rod away from the commutator segment, the gas pressure cylinder is sleeved on the probe rod, the middle part of the probe rod is provided with a flange, and the flange is connected with the sliding plate through a spring.

[0008] Further, the end of the gas pressure cylinder is provided with a cylindrical cavity, the outer side of the cylindrical cavity is provided with a tapered cavity, one end of the probe rod in the gas pressure cylinder is provided with a sealing ring, and the sealing ring is matched with the cylindrical cavity.

[0009] Further, the end of the gas pressure cylinder is provided with a detection tube, and a buzzer is connected to the detection tube.

[0010] Further, in order to accurately set the detection amount of the probe rod, a scale value is arranged on the probe rod.

[0011] The utility model discloses beneficial effect as follows: the detection rod is always attached with the commutating segment under the action of spring, when the wear of commutating segment exceeds the set value, the end of detection rod is no longer sealed connection with the air pressure cylinder, and the air pressure of air pressure cylinder produces the change alarm, thereby judging that the wear of current working time or working circle number has exceeded the quality requirement. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic diagram of commutator copper commutating segment wear resistance detection device of the utility model embodiment;

[0013] Figure 2 It is Figure 1 Front view;

[0014] Figure 3 It is the sectional view of detection rod and air pressure cylinder connection relation;

[0015] Figure 4 It is Figure 3 The enlarged view of I part in it.

[0016] Wherein, 1, detection table, 2, motor, 3, mounting disc, 4, commutating segment, 5, sliding plate, 6, detection rod, 7, air pressure cylinder, 8, detection tube, 9, flange, 10, spring, 11, sealing ring, 12, cylindrical cavity, 13, taper cavity.

[0017] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model along with the embodiment of the utility model, and do not constitute the limitation of the utility model. DETAILED DESCRIPTION

[0018] The technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment of the utility model;Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor belong to the range of the utility model protection.

[0019] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it can not be understood as the limitation of the utility model.

[0020] As Figure 1 And Figure 2As shown, the utility model discloses a kind of commutator copper commutator segment wear resistance detection device, including detection table 1, motor 2 is fixed on detection table 1, output shaft of motor 2 is fixed with mounting disc 3, and mounting disc 3 is used to fix the commutator segment 4 to be detected, when detection operation, motor 2 drives commutator segment 4 to rotate continuously, to simulate the state when commutator segment 4 actually works.

[0021] Detection table 1 is slidably provided with sliding plate 5, and probe rod 6 is slidably provided on sliding plate 5, the distance between probe rod 6 and commutator segment 4 can be changed when sliding plate 5 slides, to adapt to the detection of commutator segment 4 of different diameters, probe rod 6 is in contact with commutator segment 4, for determining the wear of commutator segment 4.

[0022] As shown in the figure, Figure 3 Sliding plate 5 is provided with air pressure cylinder 7, air pressure cylinder 7 is arranged at one end of probe rod 6 away from commutator segment 4, air pressure cylinder 7 is sleeved on probe rod 6, the middle part of probe rod 6 is provided with flange 9, spring 10 is connected between flange 9 and sliding plate 5, flange 9 is always pushed to one side of commutator segment 4 by spring 10, so that the end of probe rod 6 is always attached to commutator segment 4, the end of probe rod 6 can be installed to simulate brush, to simulate the working condition when brush is actually in contact with commutator segment 4.

[0023] As shown in the figure, Figure 4 In order to monitor the wear of commutator segment 4 in real time, probe rod 6 can feed back the wear value into air pressure signal, the end of air pressure cylinder 7 is provided with cylindrical cavity 12, the outer side of cylindrical cavity 12 is provided with tapered cavity 13, one end of probe rod 6 in air pressure cylinder 7 is provided with sealing ring 11, sealing ring 11 is matched with cylindrical cavity 12, when probe rod 6 is in cylindrical cavity 12, air pressure cylinder 7 is sealed with probe rod 6 under the action of sealing ring 11, when probe rod 6 slides to tapered cavity 13, there is gap between air pressure cylinder 7 and probe rod 6, sealing ring 11 can not maintain the air pressure inside air pressure cylinder 7 any more, so that air pressure signal is changed into intuitive signal, to help determine the wear of commutator segment 4.

[0024] In order to more intuitively judge the air pressure state in air pressure cylinder 7, detection tube 8 is arranged at the end of air pressure cylinder 7, buzzer is connected on detection tube 8, buzzer is electrically connected with motor 2, when buzzer alarms, motor 2 is braked and locked, no longer drives commutator segment 4 to rotate, to determine the number of rotation of current motor 2, or rotation time.

[0025] In order to accurately set the detection amount of the detection rod 6, a scale value is arranged on the detection rod 6. In some embodiments, if the set wear amount is 1 mm, the sliding plate 5 is moved so that the detection rod 6 is in contact with the commutating sheet 4, the commutating sheet 4 compresses the detection rod 6 into the cylindrical cavity 12, at this time, the position of the sliding plate 5 needs to be controlled so that the scale value on the detection rod 6 is matched with the 1 mm position, at this time, the distance between the sealing ring 11 at the end of the detection rod 6 and the tapered cavity 13 is 1 mm, when the wear amount of the commutating sheet 4 exceeds 1 mm, the detection rod 6 moves to the tapered cavity 13 under the action of the spring 10, so that the pressure in the air pressure cylinder 7 is applied to alarm, the effect of directly alarming by the buzzer and braking the motor 2 when the wear exceeds is realized, so as to judge the current working time or working number of turns.

[0026] In specific work, the commutating sheet 4 to be detected is fixed on the mounting disc 3, and the sliding plate 5 is moved so that the detection rod 6 is in contact with the commutating sheet 4, the commutating sheet 4 will compress the detection rod 6 inwardly against the resistance of the spring 10, according to the set wear amount of the commutating sheet 4, the sliding plate 5 is moved so that the detection rod 6 moves to the corresponding wear scale value, at this time, the sealing ring 11 on the detection rod 6 is in the cylindrical cavity 12.

[0027] The motor 2 is started, the motor 2 drives the commutating sheet 4 to rotate at high speed through the mounting disc 3, in the process of rotation, the analog brush at the end of the detection rod 6 continuously rubs against the commutating sheet 4, when the commutating sheet 4 rubs to the set value, the detection rod 6 also slides a corresponding distance under the action of the spring 10.

[0028] At this time, the sealing ring 11 on the detection rod 6 moves from the cylindrical cavity 12 to the tapered cavity 13, the detection rod 6 is no longer in sealing cooperation with the air pressure cylinder 7, the air pressure cylinder 7 is applied with pressure, the detection tube 8 at the end of the air pressure cylinder 7 detects the pressure anomaly, the buzzer alarms, and at the same time, the motor 2 is controlled to brake, the working time or working number of turns of the motor 2 at this time can be checked.

[0029] It should be noted that, in the present document, the terms such as first and second, etc. are used merely to differentiate one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article or device.

[0030] The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A device for testing the wear resistance of copper commutator segments, characterized in that, include: The sliding plate (5) can slide to adjust the distance between itself and the commutator (4); The probe (6) is slidably mounted on the slide plate (5) and contacts the commutator segment (4) to detect the wear of the commutator segment (4); A pneumatic cylinder (7) is fitted onto the end of the probe (6) away from the commutator (4). The end of the pneumatic cylinder (7) is provided with a cylindrical cavity (12), and a tapered cavity (13) is provided on the outside of the cylindrical cavity (12). When the probe (6) is in the cylindrical cavity (12), the pneumatic cylinder (7) and the probe (6) are sealed together. When the probe (6) slides to the tapered cavity (13), there is a gap between the pneumatic cylinder (7) and the probe (6).

2. The commutator copper commutator segment wear resistance testing device according to claim 1, characterized in that: The end of the air cylinder (7) is provided with a detection tube (8), and a buzzer is connected to the detection tube (8).

3. The commutator copper commutator segment wear resistance testing device according to claim 1, characterized in that: The probe (6) has a flange (9) in the middle, and a spring (10) is connected between the flange (9) and the slide plate (5).

4. The commutator copper commutator segment wear resistance testing device according to claim 1, characterized in that: The probe (6) is provided with a sealing ring (11) at one end of the air pressure cylinder (7), and the sealing ring (11) is adapted to the cylindrical cavity (12).

5. The commutator copper commutator segment wear resistance testing device according to claim 1, characterized in that: It also includes a testing platform (1), on which a motor (2) is fixed, and a mounting plate (3) is fixed on the output shaft of the motor (2), and the commutator segment (4) to be tested is mounted on the mounting plate (3).

6. The commutator copper commutator segment wear resistance testing device according to claim 5, characterized in that: The slide plate (5) is slidably mounted on the testing platform (1).

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