Discharge maintenance device for electrical equipment in underground coal mine

Abstract

The utility model discloses a coal mine underground electrical equipment discharge overhauling device relates to electrical equipment technical field, including the pole body, the discharge head is located pole body end portion, and it includes the bending part, is located the discharge head terminal and is bent to the pole body direction, the utility model has the beneficial effect that: the double impurity cleaning structure of electrical equipment terminal is formed to the gap and the scraping section cooperation through the setting, can actively remove the oil dirtiness impurity on the terminal surface, avoids forming the insulating layer and influences electrical equipment discharge, adapts the underground humid dusty environment, in addition, through the extrusion cooperation of the scraping section and the terminal setting, can realize the self -cleaning effect to the residual impurity in the gap, thereby can facilitate the continuous work of scraper, reduces the manual cleaning frequency, realizes the effect of high -efficient cleaning impurity and stable discharge conduction as a whole, satisfies the safety and efficiency requirement of coal mine underground electrical equipment discharge overhauling.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to a discharge inspection and maintenance device for electrical equipment in coal mines. Background Technology

[0002] In underground coal mine operations, electrical equipment is a crucial facility ensuring the normal progress of mining work. When electrical equipment needs maintenance, to prevent electric shock accidents caused by residual charge, a discharge maintenance device must be used to discharge the equipment. Currently, the core component of commonly available discharge maintenance devices for underground coal mine electrical equipment is a discharge rod. The front end of the discharge rod is usually designed with a pin or hook structure. By contacting the equipment terminals and operating the start button on the discharge rod, the discharge circuit is connected, completing the charge release operation.

[0003] However, the underground environment of coal mines is characterized by dampness and dust, and during long-term operation, the terminals of electrical equipment are prone to accumulating large amounts of oil and impurities due to factors such as oil and gas leaks and dust accumulation. Existing discharge rods with pin or hook structures at the front end rely on a relatively simple contact method with the equipment terminals, achieving conductivity solely through mechanical contact via insertion or hooking. When oil and impurities are present on the terminal surface, an insulating layer forms at the contact point, severely hindering current conduction. This not only significantly reduces discharge efficiency but also prevents the complete release of charge, making it difficult to meet the safety and efficiency requirements for discharge maintenance of electrical equipment in the complex environment of underground coal mines. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a discharge inspection and maintenance device for electrical equipment in coal mines.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A discharge inspection and maintenance device for electrical equipment in coal mines, comprising a pole;

[0007] A discharge head, located at the end of the rod, includes:

[0008] The bending section is located at the end of the discharge head and bends towards the rod body;

[0009] At least one pair of notches are provided on the bend, and a number of scrapers are provided on the inner wall of the notch along the circumference. The front end of the scraper is conical and forms a temporary impurity storage gap with the inner wall of the notch.

[0010] A pair of scraping sections are respectively located on both sides of the bending section along its axial direction;

[0011] When the notch abuts against the electrical equipment terminal and rotates, the plurality of scrapers form a cleaning structure that scrapes local impurities on the terminal surface into the temporary storage gap; when the scraping section abuts against the terminal surface and slides, the scraping section performs a scraping action on local impurities on the terminal surface and generates vibration transmitted to the temporary storage gap.

[0012] Preferably, the scraping section is composed of a plurality of arc-shaped protrusions spaced apart along the axial direction of the bend, and the size of the plurality of arc-shaped protrusions varies gradually along the axial direction of the bend.

[0013] Preferably, the cross-section of the notch is semi-circular, and the openings of the plurality of notches are not oriented in the same direction.

[0014] Preferably, a channel for inserting electrical equipment terminals is formed between the bent portion and the discharge head, and the discharge head has a conductive arc surface at the end of the channel.

[0015] Preferably, the discharge head is provided with a stop protrusion extending to the opening position of the conductive arc surface.

[0016] Preferably, both the discharge head and the bending part are made of copper and are integrally die-cast.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: the combination of the notch and the scraping section forms a dual impurity cleaning structure for the electrical equipment terminals, which can actively remove oil and impurities from the terminal surface, avoid the formation of an insulating layer that affects the discharge of the electrical equipment, and is suitable for the humid and dusty environment underground; in addition, the squeezing combination of the scraping section and the terminal can achieve a self-cleaning effect on the residual impurities in the notch, thereby facilitating continuous operation of the scraper and reducing the frequency of manual cleaning; the overall effect is to achieve efficient impurity cleaning and stable discharge conduction, meeting the safety and efficiency requirements of electrical equipment discharge maintenance in coal mines. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the discharge head in this utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the structure of the discharge head in this utility model. Figure 2 .

[0022] The diagram is labeled as follows: 1. Rod body; 2. Discharge head; 20. Bending section; 21. Notch; 211. Scraper blade; 22. Scraping section; 23. Conducting arc surface; 231. Stop protrusion. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Example

[0025] like Figures 1-3 As shown, a discharge maintenance device for underground electrical equipment in a coal mine includes a rod 1, which can be understood as the rod body of a discharge rod in the prior art, and has basic components such as a rubber grip, a discharge control button, an insulation part, and a grounding knob.

[0026] Discharge head 2, located at the end of rod 1, includes:

[0027] A bending portion 20 is located at the end of the discharge head 2 and bends towards the rod body 1. A channel for inserting the electrical equipment terminal is formed between the bending portion 20 and the discharge head 2, achieving initial positioning of the discharge head 2 and the terminal. A conductive arc surface 23 is provided at the end of the channel of the discharge head 2. The conductive arc surface 23 increases the contact area between the discharge head 2 and the terminal, ensuring stable current conduction. At the same time, it can keep the contact position between the terminal and the discharge head 2 away from the bending portion 20, avoiding the influence of dirt. A stop protrusion 231 is provided on the discharge head 2, extending to the opening of the conductive arc surface 23. The stop protrusion 231 can play a certain reverse limiting effect on the terminal inserted into the conductive arc surface 23, preventing the terminal from easily falling out of the conductive arc surface 23, thereby affecting the discharge stability.

[0028] At least one pair of notches 21 are provided on the bending portion 20. The inner wall of the notch is provided with several scrapers 211 along the circumference. The front end of the scraper 211 is conical and forms a temporary impurity storage gap with the inner wall of the notch 21. The temporary storage gap can prevent the cleaned impurities from re-attaching to the terminal. The cross-section of the notch 21 is semi-circular, and the openings of the multiple notches 21 are in different directions. The semi-circular notches 21 can be adapted to terminals of different sizes, and the design of openings in different directions expands the range of contact and adaptation with the terminal, enabling cleaning of different positions on the terminal surface.

[0029] A pair of scraping sections 22 are respectively provided on both sides of the bending portion 20 along its axial direction. The scraping section 22 is composed of multiple arc-shaped protrusions that are spaced apart along the axial direction of the bending portion 20. The size of the multiple arc-shaped protrusions varies in gradient along the axial direction of the bending portion 20. The design of the arc-shaped protrusions not only improves the adaptability to cleaning electrical equipment terminals and avoids cleaning dead corners caused by uneven terminal surfaces, ensuring the cleanliness of contact parts, but also generates vibrations of different frequencies and amplitudes when the terminal surface is squeezed, which facilitates the removal of impurities in the temporary storage gaps.

[0030] When the notch 21 abuts against the electrical equipment terminal and rotates, multiple scrapers 211 form a cleaning structure that scrapes local impurities on the terminal surface into a temporary storage gap. The pointed cone-shaped scrapers 211 can be manually operated by the operator to form a small reciprocating deflection, thereby effectively scraping oil and impurities on the terminal surface and temporarily storing the cleaned impurities through the temporary storage gap. When the scraping section 22 abuts against the terminal surface and slides, the scraping section 22 forms a scraping action on local impurities on the terminal surface and scrapes other positions on the terminal surface (especially the rotation blind area of ​​the notch 21), further improving the cleaning effect on the terminal surface impurities, and generating vibration transmitted to the temporary storage gap. Through vibration, the impurities attached to the temporary storage gap can be detached from the notch 21, achieving a self-cleaning effect. This allows the scrapers 211 to continuously clean the terminal surface without the need for frequent manual cleaning.

[0031] In addition, both the discharge head 2 and the bending part 20 are made of copper and are integrally die-cast. This not only relies on the high conductivity and corrosion resistance of copper to ensure discharge efficiency and adaptability to the humid environment downhole, but also eliminates connection gaps through the integral molding process, thereby improving structural strength and conductivity stability and enhancing the performance of the device.

[0032] It should be noted that during the cleaning process of the terminal surface, the discharge head 2 is in a non-conductive state. When the cleaning is completed and the electrical equipment terminal is inserted into the conductive arc surface 23, the discharge control button on the start rod 1 can realize the discharge operation of the electrical equipment, which is convenient for later maintenance.

[0033] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A discharge inspection and maintenance device for electrical equipment in coal mines, characterized in that, include: Rod (1); A discharge head (2) is disposed at the end of the rod body (1), and includes: The bending part (20) is located at the end of the discharge head (2) and bends towards the rod body (1); At least one pair of notches (21) are provided on the bend (20), and a number of scrapers (211) are provided on the inner wall along the circumference. The front end of the scraper (211) is conical and forms a temporary impurity storage gap with the inner wall of the notch (21). A pair of scraping sections (22) are respectively provided on both sides of the bending part (20) along its axial direction; When the notch (21) abuts against the electrical equipment terminal and rotates, the plurality of scrapers (211) form a cleaning structure that scrapes local impurities on the terminal surface to the temporary storage gap; when the scraping section (22) abuts against the terminal surface and slides, the scraping section (22) forms a scraping action on the local impurities on the terminal surface and generates vibration transmitted to the temporary storage gap.

2. The discharge inspection and maintenance device for underground electrical equipment in coal mines according to claim 1, characterized in that: The scraping section (22) is composed of a plurality of arc-shaped protrusions spaced apart along the axial direction of the bending portion (20), and the size of the plurality of arc-shaped protrusions varies in gradient along the axial direction of the bending portion (20).

3. The discharge inspection and maintenance device for underground electrical equipment in coal mines according to claim 1, characterized in that: The cross-section of the notch (21) is semi-circular, and the openings of the multiple notches (21) are not oriented in the same direction.

4. The discharge inspection and maintenance device for underground electrical equipment in coal mines according to claim 1, characterized in that: The bending portion (20) and the discharge head (2) form a channel for inserting the electrical equipment terminal, and the discharge head (2) is provided with a conductive arc surface (23) at the end of the channel.

5. A discharge inspection and maintenance device for underground electrical equipment in coal mines according to claim 4, characterized in that: The discharge head (2) is provided with a stop protrusion (231) extending to the opening position of the conductive arc surface (23).

6. The discharge inspection and maintenance device for underground electrical equipment in coal mines according to claim 1, characterized in that: The discharge head (2) and the bending part (20) are both made of copper and are integrally die-cast.

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