Abrasion early warning device for carbon brush of multi-pole tube type slide wire current collector

Abstract

The utility model relates to a multi-pole tube type slide wire current collector carbon brush abrasion early warning device which comprises a shell and a movable part. The movable part comprises a lower limiting part and a supporting part, a through hole is formed in the upper end face of the shell, one end of the supporting part extends into the shell through the through hole and is connected with the lower limiting part, and a microswitch is arranged on the upper end face of the lower limiting part; and one terminal of the microswitch is connected in series with a warning lamp. When the carbon brush is abraded, the height of the carbon brush is shortened, a spring arranged in the current collector pushes the carbon brush downwards to keep the carbon brush in contact with the copper bar, at the moment, the shell moves downwards relative to the movable part, and when the abrasion degree of the carbon brush reaches an alarm value, the microswitch on the lower limiting part abuts against the inner top wall of the shell, so that the microswitch is triggered, and the carbon brush is driven to rotate. Whether the carbon brush reaches an alarm value or not can be judged without dismounting and visual observation, so that the replacement time of the current collector is more accurate, and the waste of manpower and materials is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of collector carbon brushes, in particular to a multi-pole tube type busbar collector carbon brush wear warning device. Background Art

[0002] Existing multi-pole busbar collector carbon brushes rub against the copper busbar during use, causing wear. When the brush wear reaches a predetermined level, poor contact and the risk of power failure can occur. In severe cases, arcing can occur at the poor contact point, damaging the brush and copper busbar surfaces and accelerating wear. The rate of carbon brush wear is influenced by factors such as the parallelism between the busbar axis and the collector's trajectory, the collector's movement time, and the collector's movement speed. It is difficult to determine the exact time when the carbon brushes reach the wear warning value. Since the collector is installed inside the busbar, maintenance personnel cannot directly observe the carbon brushes from the outside, so they must remove the collector for visual inspection. This cumbersome and time-consuming disassembly and assembly process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multi-pole tube type busbar collector carbon brush wear warning device to overcome the deficiencies in the above-mentioned prior art.

[0004] The utility model solves the above-mentioned technical problems with the following technical solutions: a multi-pole tube type busbar collector carbon brush wear warning device, comprising a housing and a movable part; the interior of the housing is hollow, the movable part comprises a lower limit portion and a support portion, the upper end surface of the housing is provided with a through hole, one end of the support portion extends into the housing through the through hole and is connected to the lower limit portion, and the upper end surface of the lower limit portion is provided with a micro switch;

[0005] One terminal of the micro switch is connected in series with a warning light, and the other terminal of the micro switch and the other terminal of the warning light are connected to an external power supply of the carbon brush.

[0006] The beneficial effects of the present invention are as follows: the early warning device is arranged inside the collector and above the carbon brush, the top of the movable part is connected to the inner top wall of the collector, and the bottom end of the shell of the early warning device is connected to the upper end face of the carbon brush; when the carbon brush is worn, the height of the carbon brush becomes shorter, and the spring inside the collector pushes the carbon brush downward to maintain the contact between the carbon brush and the copper busbar. At this time, the shell moves downward relative to the movable part. When the degree of wear of the carbon brush reaches the warning value, the microswitch on the lower limit part conflicts with the inner top wall of the shell, thereby triggering the microswitch, and then issuing a warning through the warning light. It is possible to visually judge whether the carbon brush has reached the warning value without disassembly and assembly, so that the replacement time of the collector is more accurate and the waste of manpower and materials is reduced.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a compression spring is provided in the shell, and two ends of the compression spring are respectively connected to the lower limit portion and the bottom of the shell.

[0009] Furthermore, the movable component also includes an upper limit portion; four groups of support portions and through holes are provided, and the upper ends of the four groups of support portions are all connected to the lower end surface of the upper limit portion.

[0010] Furthermore, another terminal of the micro switch and another terminal of the warning light are detachably connected to the terminal post of the carbon brush through a copper nose.

[0011] Furthermore, the micro switch is a normally closed micro switch.

[0012] Furthermore, the housing and movable parts are made of ABS material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model in use state.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0017] 1. Shell; 11. Through hole; 2. Movable part; 21. Lower limit part; 22. Support part; 23. Upper limit part; 3. Micro switch; 4. Warning light; 5. Carbon brush; 6. Compression spring; 7. Copper nose; 8. Current collector. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figures 1 to 3 As shown, embodiment 1, a multi-pole tube type busbar collector carbon brush wear warning device, includes a housing 1 and a movable part 2; the interior of the housing 1 is hollow, and the movable part 2 includes a lower limit portion 21 and a support portion 22. The upper end surface of the housing 1 is provided with a through hole 11, and one end of the support portion 22 extends into the housing 1 through the through hole 11 and is connected to the lower limit portion 21. The upper end surface of the lower limit portion 21 is provided with a micro switch 3;

[0020] One terminal of the micro switch 3 is connected in series with the warning light 4 , and the other terminal of the micro switch 3 and the other terminal of the warning light 4 are connected to an external power source with the carbon brush 5 .

[0021] The early warning device is arranged inside the collector 8 and above the carbon brush 5. The top of the movable part 2 is connected to the inner top wall of the collector 8, and the bottom end of the shell 1 of the early warning device is connected to the upper end face of the carbon brush 5. When the carbon brush 5 is worn, the height of the carbon brush 5 becomes shorter, and the spring inside the collector 8 pushes the carbon brush 5 downward to keep the carbon brush 5 in contact with the copper bus. At this time, the shell 1 moves downward with the carbon brush 5 relative to the movable part 2. When the wear degree of the carbon brush 5 reaches the warning value, the microswitch 3 on the lower limit part 21 conflicts with the inner top wall of the shell 1, thereby triggering the microswitch 3, and then issuing a warning through the warning light 4. It is possible to visually judge whether the carbon brush 4 has reached the warning value without disassembly, so that the replacement time of the collector 8 is more accurate and reduces the waste of manpower and materials.

[0022] In a specific implementation, the other terminal of the micro switch 3 and the other terminal of the warning light 4 are connected to the terminal of the carbon brush 5 .

[0023] Example 2: This example is a further improvement on Example 1, and its details are as follows:

[0024] A compression spring 6 is disposed within the housing 1, with its two ends connected to the lower limit portion 21 and the inner bottom of the housing 1, respectively. The provision of the compression spring 6 stabilizes the triggering of the microswitch 3, preventing poor contact. Furthermore, the provision of the compression spring 6 eliminates the need for a fixed connection between the movable component 2 and the inner top wall of the current collector 8, allowing the warning device to be installed within an existing current collector 8 and reused.

[0025] Example 3: This example is a further improvement on Example 1, and its details are as follows:

[0026] The movable part 2 further includes an upper limit portion 23. Four groups of support portions 22 and through holes 11 are provided, and the upper ends of the four groups of support portions 22 are connected to the lower end surface of the upper limit portion 23. This makes the relative movement between the housing 1 and the movable part 2 more stable.

[0027] Example 4: This example is a further improvement on Example 1, and its details are as follows:

[0028] The other terminal of the micro switch 3 and the other terminal of the warning light 4 are detachably connected to the terminal of the carbon brush 5 through the copper nose 7, so as to facilitate quick wiring and installation.

[0029] Example 5: This example is a further improvement on Example 1, and its details are as follows:

[0030] Microswitch 3 is a normally closed microswitch. If it were a normally open microswitch, a malfunction or failure of the device would cause the light to go out, affecting the judgment of the degree of wear of the carbon brush 5. Therefore, a normally closed microswitch is set. Under normal circumstances, microswitch 3 is in the on state, and the warning light 4 is always on. When the degree of wear of the carbon brush 5 reaches the warning value, the microswitch 3 is triggered to disconnect the circuit, and the warning light 4 is turned off. The normally closed microswitch facilitates observation and avoids misjudgment caused by the light going out due to malfunction or failure of the device itself.

[0031] Example 6: This example is a further improvement on Example 1, and its details are as follows:

[0032] The housing 1 and the movable part 2 are made of ABS material. ABS material has the characteristics of fireproof, shockproof and anti-static, and is low in cost.

[0033] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A multi-pole tube type busbar collector carbon brush wear warning device, characterized in that: The invention comprises a housing (1) and a movable part (2); the housing (1) is hollow inside, the movable part (2) comprises a lower limit part (21) and a support part (22), the upper end surface of the housing (1) is provided with a through hole (11), one end of the support part (22) extends into the housing (1) through the through hole (11) and is connected to the lower limit part (21), and the upper end surface of the lower limit part (21) is provided with a micro switch (3); One terminal of the micro switch (3) is connected in series with a warning light (4), and the other terminal of the micro switch (3) and the other terminal of the warning light (4) are connected to an external power supply of a carbon brush (5).

2. The multi-pole tube type busbar collector carbon brush wear warning device according to claim 1, characterized in that: A compression spring (6) is provided in the housing (1), and two ends of the compression spring (6) are respectively connected to the lower limit portion (21) and the bottom of the housing (1).

3. The multi-pole tube type busbar collector carbon brush wear warning device according to claim 1, characterized in that: The movable component (2) further includes an upper limit portion (23); four groups of the support portions (22) and the through holes (11) are provided, and the upper ends of the four groups of support portions (22) are all connected to the lower end surface of the upper limit portion (23).

4. The multi-pole tube type busbar collector carbon brush wear warning device according to claim 1, characterized in that: The other terminal of the micro switch (3) and the other terminal of the warning light (4) are detachably connected to the terminal post of the carbon brush (5) via a copper nose (7).

5. The multi-pole tube type busbar collector carbon brush wear warning device according to claim 1, characterized in that: The micro switch (3) is a normally closed micro switch (3).

6. The multi-pole tube type busbar collector carbon brush wear warning device according to claim 1, characterized in that: The housing (1) and the movable component (2) are made of ABS material.

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