Static grounding resistance detection device for civil explosive article on-site disassembly site

Abstract

The utility model provides a kind of static grounding resistance detection device of civilian explosive article on-site disassembly place, it is related to static grounding resistance detection technical field, comprising: resistance detector, resistance detector is electrically connected with conductive contact piece by cable, the conductive contact piece is round copper sheet, and conductive contact piece is equipped with detection interface disc, the bottom of the detection interface disc is connected with interface disc assembly seat by screw, the fixed connection between the interface disc assembly seat and the upper surface of conductive contact piece is equipped with auxiliary laminating top spring, the inside of the detection interface disc is equipped with four strong magnetic blocks, under the magnetic action of strong magnetic block and the detected object, detection interface disc is pushed down, so that conductive contact piece and detected surface are closely laminated, and under the action of auxiliary laminating top spring, conductive contact piece is continuously pushed down, so as to guarantee the close lamination of conductive contact piece and detected surface, maintain reliable electrical connection between resistance detector and detected facility, reduce the probability of detection error caused by the occurrence of open circuit.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic grounding resistance detection technology, and in particular to an electrostatic grounding resistance detection device for on-site dismantling of civil explosive materials. Background Technology

[0002] The dismantling and disposal of civilian explosives must be carried out in a professional disposal site that meets safety standards. This is the primary prerequisite for ensuring operational safety. Many civilian explosives, such as electric detonators and detonating cords, are extremely sensitive to electrostatic discharge. Static electricity accumulated on the human body or equipment can easily form a high potential difference, which may generate discharge sparks. Although the energy of these sparks is small, it is enough to accidentally ignite the explosives and cause extremely serious consequences. Therefore, in such working environments, all facilities, including dismantling workbenches, special dismantling tools, instruments and equipment, and transport trolleys, must take comprehensive and reliable anti-static measures and adopt a reliable hard grounding method to ensure that static charge can be continuously and quickly discharged to the ground and always maintain zero potential.

[0003] To ensure the effective grounding of disassembly workbenches, specialized disassembly tools, instruments, and equipment, it is necessary to frequently test the electrostatic grounding resistance of these facilities. This eliminates the possibility of safety accidents caused by static electricity due to poor grounding. For grounding testing of such facilities, a specialized resistance testing tool needs to be connected between the ground and the facility under test. The wires and the facility under test form an electrical connection through contact. For the planar areas of the facility under test, a tool is needed to press the testing contact plate firmly against the surface being tested to maintain a tight fit. Loose fit can easily lead to reduced test results and cause testing errors. Utility Model Content

[0004] This utility model provides an electrostatic grounding resistance testing device for on-site dismantling of civil explosives. It addresses the need for frequent testing of the electrostatic grounding resistance of facilities such as dismantling workbenches, specialized dismantling tools, and instruments to ensure effective grounding and eliminate the possibility of safety accidents caused by static electricity due to poor grounding. However, grounding testing of such facilities requires connecting a specialized resistance testing tool between the ground and the facility being tested. The wires form an electrical connection with the facility through contact. For planar areas of the facility being tested, a tool is needed to press the testing contact plate firmly against the surface to maintain a tight fit. Loose fit can easily lead to reduced detection accuracy and testing errors.

[0005] This utility model provides an electrostatic grounding resistance detection device for on-site dismantling of civil explosive materials, specifically including: a resistance detector, which is electrically connected to a conductive contact piece via a cable. The conductive contact piece is a circular copper sheet. A detection plate is provided outside the conductive contact piece. A plate mounting base is connected to the bottom of the detection plate via screws. An auxiliary contact spring is fixedly connected between the plate mounting base and the upper surface of the conductive contact piece. Four strong magnetic blocks are provided inside the detection plate. An outer rotating sleeve is rotatably connected to the strong magnetic blocks via bearings.

[0006] Furthermore, an inner cylinder with a square cross-section is fixedly connected to the middle of the upper surface of the conductive contact.

[0007] Furthermore, an outer guide cylinder with a square cross-section is fixedly connected to the middle of the bottom surface of the receiving plate assembly base, and the inner contact piece is slidably connected to the inside of the outer guide cylinder.

[0008] Furthermore, the detection plate has four spiral push holes running longitudinally through it, and a first wire through hole running longitudinally through the center of the detection plate, through which the cable between the conductive contact and the resistance detector moves.

[0009] Furthermore, the strong magnetic block is rotatably connected to a telescopic column at its center, the telescopic column is spirally connected inside the spiral push hole, and a driven synchronous gear is fixedly connected to the upper end of the telescopic column.

[0010] Furthermore, a sleeve gear ring is fixedly connected around the inner wall of the outer sleeve, and the inner wall of the sleeve gear ring has internal teeth that mesh with the driven synchronous gear.

[0011] Furthermore, the outer sleeve has a second wire through hole that runs longitudinally through its center. The cable between the conductive contact and the resistance detector moves through the second wire through hole, and the outer surface of the outer sleeve has anti-slip texture.

[0012] This utility model provides a static grounding resistance detection device for on-site dismantling of civilian explosives, which has the following beneficial effects: This invention improves the stability of grounding resistance detection. When electrically connecting the resistance detector to the surface being tested, the detection plate is placed over the surface of the object being tested, with the conductive contact facing the surface. Under the magnetic action of the strong magnetic block and the object being tested, the detection plate is pushed downwards, making the conductive contact tightly adhere to the surface being tested. With the help of an auxiliary contact spring, the conductive contact is continuously pushed downwards, thereby ensuring a tight fit between the conductive contact and the surface being tested, maintaining a reliable electrical connection between the resistance detector and the tested facility, and reducing the probability of detection errors caused by open circuits.

[0013] In addition, an adjustable strong magnetic block is provided. When it is necessary to move the test plate, if the strong magnetic block is difficult to move due to the magnetic attraction between the strong magnetic block and the surface of the object being tested, the strong magnetic block can be moved upward by rotating the outer sleeve. This separates the strong magnetic block from the surface of the object being tested, increases the distance between the strong magnetic block and the surface of the object being tested, reduces the magnetic attraction, and makes it easier to remove the test plate from the surface of the tested facility. This improves the ease of use and makes it more suitable for switching between different tested facilities. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 This application shows a schematic diagram of the structure of the bottom of the detection plate; Figure 3 This invention provides a schematic diagram of the internal structure of the testing connector. Figure 4 This application shows Figure 2 Front view structural diagram; Figure 5 This paper shows a schematic diagram of the structure in its disassembled state. Figure 6 A schematic diagram of the structure of the receiving plate assembly base of this application is shown; Figure 7 This application shows Figure 5 A magnified structural diagram of point A in the middle.

[0017] Figure label: 1. Resistance detector; 2. Conductive contact; 201. Inner cylinder of contact; 3. Detection plate; 301. Plate mounting base; 302. Outer guide cylinder; 303. Auxiliary fitting top spring; 304. Spiral push hole; 305. Bearing; 306. First wire through hole; 4. Strong magnetic block; 401. Telescopic rotating column; 402. Driven synchronous gear; 5. Outer rotating sleeve; 501. Rotating sleeve gear ring; 502. Second wire through hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1 to 7 : This utility model proposes an electrostatic grounding resistance detection device for on-site dismantling of civilian explosives, comprising: a resistance detector 1, which is electrically connected to a conductive contact 2 via a cable. The conductive contact 2 is a circular copper sheet. A detection receiving plate 3 is provided outside the conductive contact 2. A receiving plate mounting base 301 is connected to the bottom of the detection receiving plate 3 by screws. An auxiliary contact spring 303 is fixedly connected between the receiving plate mounting base 301 and the upper surface of the conductive contact 2. Four strong magnetic blocks 4 are provided inside the detection receiving plate 3. An outer rotating sleeve 5 is rotatably connected to the strong magnetic blocks 4 via a bearing 305. The device is used to electrically connect the resistance detector 1 to the plane being tested. When the test plate 3 is placed over the surface of the object being tested, with the conductive contact 2 facing the surface of the object, and under the magnetic action of the strong magnetic block 4 and the object being tested, the test plate 3 is pushed downwards, so that the conductive contact 2 is tightly attached to the surface being tested. Under the action of the auxiliary contact spring 303, the conductive contact 2 is continuously pushed downwards, thereby ensuring the tight attachment between the conductive contact 2 and the surface being tested, maintaining a reliable electrical connection between the resistance detector 1 and the tested facility, reducing the probability of detection errors caused by open circuits, and also preventing the tested facility from losing electrical connection with the resistance detector 1 due to shaking or movement.

[0020] In this embodiment, an inner tube 201 with a square cross-section is fixedly connected to the middle of the upper surface of the conductive contact 2, and an outer tube 302 with a square cross-section is fixedly connected to the middle of the bottom surface of the receiving plate assembly 301. The inner tube 201 is slidably connected inside the outer tube 302, which serves as a guide to ensure that the conductive contact 2 is parallel to the top surface inside the detection receiving plate 3. This allows the conductive contact 2 to achieve surface-to-surface contact when it contacts the object being detected, increasing the contact area, improving the stability of the electrical connection, and reducing the resistance generated at the connection point between the contacts.

[0021] In Example 2, based on Example 1, the detection plate 3 has four longitudinally penetrating spiral push holes 304, and a first wire through hole 306 is longitudinally penetrating the center of the detection plate 3. The cable between the conductive contact 2 and the resistance detector 1 moves through the first wire through hole 306. A telescopic rotating column 401 is rotatably connected to the center of the strong magnetic block 4. The telescopic rotating column 401 is spirally connected inside the spiral push holes 304. A driven synchronous gear 402 is fixedly connected to the upper end of the telescopic rotating column 401. A rotating sleeve gear ring 501 is fixedly connected around the inner wall of the outer rotating sleeve 5. The inner wall of the rotating sleeve gear ring 501 has internal teeth, which mesh with the driven synchronous gear 402. The core has a second wire through hole 502 that runs longitudinally through it. The cable between the conductive contact 2 and the resistance detector 1 passes through the second wire through hole 502. The outer surface of the outer rotating sleeve 5 is provided with anti-slip texture. When the detection plate 3 is in close contact with the object being tested, if it is necessary to move the detection plate 3, and the magnetic attraction between the strong magnetic block 4 and the surface of the object being tested makes it difficult to move the detection plate 3, the strong magnetic block 4 can be moved upward by rotating the outer rotating sleeve 5. This separates the strong magnetic block 4 from the surface of the object being tested, increases the distance between the strong magnetic block 4 and the surface of the object being tested, reduces the magnetic attraction, and makes it easier to remove the detection plate 3 from the surface of the tested facility. It is also more suitable for switching between different tested facilities and improves the ease of use.

[0022] The working principle of this embodiment is as follows: First, the grounding terminal of the resistance detector 1 is connected to the grounding facility via a wire. Then, the detection plate 3 is placed on the surface of the device being tested with its opening facing downwards. The magnetic attraction between the surface being tested and the strong magnetic block 4 causes the detection plate 3 to fit tightly against the surface. The conductive contact 2, pushed by the detection plate 3 and the auxiliary contact spring 303, fits tightly against the surface being tested. The auxiliary contact spring 303 continuously pushes the conductive contact 2 downwards, ensuring a continuous tight fit between the conductive contact 2 and the surface being tested, maintaining a reliable electrical connection between the resistance detector 1 and the device being tested. Check the grounding resistance. If the grounding resistance is too high, it indicates that the grounding of the facility under test is poor and the grounding of the facility needs to be re-laid. Conversely, if the grounding resistance is very low, it indicates that the grounding is good and the civil explosives dismantling facility can be used normally. When the test plate 3 is in close contact with the object under test, if it is difficult to move the test plate 3 due to the magnetic attraction between the strong magnetic block 4 and the surface of the object under test, the strong magnetic block 4 can be moved upward by rotating the outer rotating sleeve 5. This separates the strong magnetic block 4 from the surface of the object under test, increases the distance between the strong magnetic block 4 and the surface of the object under test, reduces the magnetic attraction, and makes it easier to remove the test plate 3 from the surface of the facility under test. This method is suitable for switching between different facilities under test.

[0023] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0024] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0025] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A device for detecting electrostatic grounding resistance at a site for the on-site dismantling of civilian explosives, comprising: A resistance detector (1) is electrically connected to a conductive contact (2) via a cable. The conductive contact (2) is a circular copper sheet. A detection plate (3) is provided outside the conductive contact (2). A plate mounting base (301) is connected to the bottom of the detection plate (3) by screws. An auxiliary contact spring (303) is fixedly connected between the plate mounting base (301) and the upper surface of the conductive contact (2). Four strong magnetic blocks (4) are provided inside the detection plate (3). An outer rotating sleeve (5) is rotatably connected to the outside of the strong magnetic blocks (4) via a bearing (305).

2. The electrostatic grounding resistance detection device for a site where civilian explosives are dismantled according to claim 1, characterized in that, The conductive contact (2) has a contact inner cylinder (201) with a square cross-section fixedly connected to the middle of its upper surface.

3. The electrostatic grounding resistance detection device for a site where civilian explosives are dismantled according to claim 2, characterized in that, The bottom surface of the receiving plate assembly base (301) is fixedly connected to an outer guide cylinder (302) with a square cross-section, and the inner tube (201) of the contact piece is slidably connected inside the outer guide cylinder (302).

4. The electrostatic grounding resistance detection device for a site where civilian explosives are dismantled according to claim 3, characterized in that, The detection plate (3) has four spiral push holes (304) running longitudinally through it, and a first wire through hole (306) running longitudinally through the center of the detection plate (3). The cable between the conductive contact (2) and the resistance detector (1) passes through the first wire through hole (306).

5. The electrostatic grounding resistance detection device for a site where explosives are dismantled on-site, as described in claim 4, is characterized in that... The strong magnetic block (4) is rotatably connected to a telescopic column (401), which is spirally connected inside the spiral push hole (304). The upper end of the telescopic column (401) is fixedly connected to a driven synchronous gear (402).

6. The electrostatic grounding resistance detection device for a site where civilian explosives are dismantled according to claim 5, characterized in that, The inner wall of the outer sleeve (5) is fixedly connected with a sleeve gear ring (501), and the inner wall of the sleeve gear ring (501) is provided with internal teeth. The internal teeth of the sleeve gear ring (501) mesh with the driven synchronous gear (402).

7. The electrostatic grounding resistance detection device for a site where explosives are dismantled on-site, as described in claim 6, is characterized in that... The outer sleeve (5) has a second wire through hole (502) longitudinally through its center. The cable between the conductive contact (2) and the resistance detector (1) moves through the second wire through hole (502). The outer surface of the outer sleeve (5) is provided with anti-slip texture.

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