A lightning protection grounding resistance convenient detection device

Abstract

The utility model relates to grounding resistance detection technical field, and disclose a lightning protection grounding resistance convenient detection device, including the storage box, the top swing installation of storage box has the box cover, this lightning protection grounding resistance convenient detection device is through setting up the protection component, when personnel carries the storage box through the handrail, spring one release, sliding block, bottom plate reset, rack drives gear, rotary drum rotates, the inner wall of arc groove and the surface of the contact lever contact, the sliding rod, L shaped board moves close to the storage box, the inside of L shaped board and the top of the box cover contact, can be positioned to the box cover again, when the hand or the lock catch failure occurs, can carry out the limitation to the box cover, improve its stability, the storage box is placed in the plane, under the action of gravity, the sliding block moves into the sliding slot, rack drives gear reverses, through rotary drum, contact lever, arc groove, make the sliding rod drive L shaped board far from the storage box moves, the L shaped board separates from the box cover, can open the box cover normally.

Description

Technical Field

[0001] This utility model relates to the field of grounding resistance detection technology, specifically a convenient device for detecting lightning protection grounding resistance. Background Technology

[0002] Grounding resistance is the resistance encountered when current flows from a grounding device into the earth and then through the earth to another grounding body or diffuses to a distance. The lightning protection grounding device of a building is one of the most important parts of its lightning protection project. Whether it is direct lightning strike protection, lightning surge intrusion protection or lightning electromagnetic pulse protection, the lightning current is ultimately conducted into the earth through the grounding device. The most direct standard for measuring the grounding effect of a building's lightning protection grounding device is the size of the grounding resistance. Therefore, the actual measurement of grounding resistance is an important means of verifying the design and construction of the grounding device.

[0003] According to a public notice regarding a building lightning protection grounding resistance testing device (Announcement No.: CN222506441U), the aforementioned application uses a latch to secure the storage box to the lid. During carrying or transportation, if it encounters vibration or collision, relying solely on the single latch structure may cause the lid to accidentally pop open, resulting in the internal testing equipment or accessories falling out or even being damaged. The existing latch structure only provides basic fixation and cannot provide additional protection when the latch becomes loose or fails, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a convenient device for detecting lightning protection grounding resistance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a convenient lightning protection grounding resistance testing device, comprising a storage box, a lid movably installed on the top of the storage box, a testing instrument body placed inside the storage box, a placement slot opened inside the storage box, and protective components and limiting components provided at the bottom and inside of the storage box.

[0006] The slide groove is used to stabilize the movement of the slider;

[0007] The base plate is used to drive the rack to move synchronously.

[0008] A rack is used to drive gears to rotate.

[0009] Preferably, the slide groove is formed at the bottom of the storage box, a slider is slidably connected to the inner wall of the slide groove, a spring is fixed to the top of the slider, the top of the spring is fixed to the top of the inner wall of the slide groove, a base plate is fixed to the bottom of the slider, a connecting groove is formed inside the storage box, a rack is slidably connected to the inner wall of the connecting groove, the bottom of the rack is fixed to the top of the base plate, a gear is rotatably connected to the inner wall of the connecting groove, the rack meshes with the gear, a rotating cylinder is fixed to the inside of the gear, the rotating cylinder is rotatably connected to the inner wall of the connecting groove, a sliding rod is slidably connected to the inner wall of the connecting groove, the sliding rod passes through the rotating cylinder, and an arc-shaped groove is formed on the inner wall of the rotating cylinder. A contact rod is fixed to the outer surface of the slide rod. The end of the contact rod away from the slide rod abuts against the inner wall of the arc-shaped groove. An L-shaped plate is fixed to the end of the slide rod away from the rotating cylinder. When the spring is released, the slider moves down to reset, the base plate resets, and the rack drives the gear and the rotating cylinder to rotate synchronously. The inner wall of the arc-shaped groove abuts against the surface of the contact rod, and the slide rod and L-shaped plate move closer to the storage box. The inner side of the L-shaped plate abuts against the top of the box lid, which can limit the box lid again. When the storage box is placed on a flat surface, under the action of gravity, the slider moves into the slide groove. The rack drives the gear to reverse. Through the rotating cylinder, the contact rod, and the arc-shaped groove, the slide rod drives the L-shaped plate to move away from the storage box. At this time, the L-shaped plate disengages from the box lid, and the box lid can be opened normally.

[0010] Preferably, the limiting component includes a stabilizing groove, which is located at the bottom of the storage box. A sliding plate is slidably connected to the inner wall of the stabilizing groove. An insertion hole is provided on the surface of the sliding plate. A short rod is fixed to the top of the bottom plate. A second spring is fixed to the outer surface of the sliding plate. The end of the second spring away from the sliding plate is fixed to the inner wall of the stabilizing groove. A pressure rod is fixed to the end of the sliding plate away from the second spring. The end of the pressure rod away from the sliding plate passes through the storage box and is slidably connected to the storage box. The top of the short rod abuts against the bottom of the sliding plate, preventing the bottom plate from moving and avoiding collisions that could cause the bottom plate to move and affect the limiting of the L-shaped plate on the box lid.

[0011] Preferably, the storage box and the lid are connected by a latch for easy locking.

[0012] Preferably, the connecting groove, gear, rack, rotating cylinder, arc groove, slide rod, L-shaped plate, and abutment rod are all provided in two sets, and the two sets of connecting groove, gear, rack, rotating cylinder, arc groove, slide rod, L-shaped plate, and abutment rod are symmetrically arranged with the center line of the storage box as the axis of symmetry, thereby improving the stability of the box lid.

[0013] Preferably, the diameter of the insertion hole is the same as that of the short rod, which facilitates the insertion of the short rod into the insertion hole.

[0014] Compared with the prior art, this utility model provides a convenient device for detecting lightning protection grounding resistance, which has the following advantages:

[0015] 1. This convenient lightning protection grounding resistance testing device, through its protective components, allows the spring to release and the slider and base plate to reset when a person carries the storage box via the handrail. The rack drives the gear and rotating cylinder to rotate, and the inner wall of the arc-shaped groove contacts the surface of the contact rod. The sliding rod and L-shaped plate move closer to the storage box, and the inner side of the L-shaped plate contacts the top of the box lid, thus limiting the box lid again. In case of slippage or lock failure, the box lid can be limited to improve its stability. When the storage box is placed on a flat surface, under the action of gravity, the slider moves into the sliding groove, and the rack drives the gear to reverse. Through the rotating cylinder, contact rod, and arc-shaped groove, the sliding rod moves the L-shaped plate away from the storage box. At this time, the L-shaped plate detaches from the box lid, and the box lid can be opened normally.

[0016] 2. This convenient lightning protection grounding resistance testing device, through the setting of a limiting component, ensures that the top of the short rod abuts against the bottom of the sliding plate, preventing the base plate from moving and avoiding collisions that could cause the base plate to move and affect the limiting of the L-shaped plate on the box cover. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a front view schematic diagram of the opening structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention viewed from below;

[0020] Figure 4 This is a schematic diagram of the partial bottom sectional view of the present invention;

[0021] Figure 5 This is a schematic diagram of the exploded cross-sectional structure of the protective component of this utility model.

[0022] In the diagram: 1. Storage box; 2. Box lid; 3. Handrail; 4. Lock; 5. Detector body; 6. Placement slot; 7. Protective component; 70. Slide groove; 71. Slider; 72. Spring 1; 73. Base plate; 74. Connecting groove; 75. Gear; 76. Rack; 77. Rotary cylinder; 78. Arc groove; 79. Slide rod; 700. L-shaped plate; 701. Abutment rod; 8. Limiting component; 80. Stabilizing groove; 81. Slide plate; 82. Spring 2; 83. Short rod; 84. Insertion hole; 85. Pressure rod. Detailed Implementation

[0023] like Figures 1-5As shown, this utility model provides a technical solution: a convenient lightning protection grounding resistance testing device, including a storage box 1, a box cover 2 movably installed on the top of the storage box 1, a testing instrument body 5 placed inside the storage box 1, a placement groove 6 opened on the inside of the storage box 1, and protective components 7 and limiting components 8 provided at the bottom and inside of the storage box 1; a sliding groove 70, a slider 71, a spring 72, a base plate 73, a connecting groove 74, a gear 75, a rack 76, a rotating cylinder 77, an arc groove 78, a sliding rod 79, an L-shaped plate 700, and an abutment rod 701.

[0024] A slide 70 is formed at the bottom of the storage box 1. A slider 71 is slidably connected to the inner wall of the slide 70. A spring 72 is fixed to the top of the slider 71, and the top of the spring 72 is fixed to the top of the inner wall of the slide 70. A base plate 73 is fixed to the bottom of the slider 71. A connecting groove 74 is formed inside the storage box 1. A rack 76 is slidably connected to the inner wall of the connecting groove 74. The bottom of the rack 76 is fixed to the top of the base plate 73. A rotating part of the inner wall of the connecting groove 74 is connected to... Gear 75 and rack 76 mesh with gear 75. A rotating cylinder 77 is fixed to the inner side of gear 75. The rotating cylinder 77 is rotatably connected to the inner wall of connecting groove 74. A sliding rod 79 is slidably connected to the inner wall of connecting groove 74. The sliding rod 79 passes through the rotating cylinder 77. An arc-shaped groove 78 is formed on the inner wall of the rotating cylinder 77. An abutting rod 701 is fixed to the outer surface of the sliding rod 79. The end of the abutting rod 701 away from the sliding rod 79 abuts against the inner wall of the arc-shaped groove 78. The sliding rod 79 is away from the rotating cylinder 75. One end of the storage box 7 is fixed with an L-shaped plate 700. Two sets of connecting grooves 74, gears 75, racks 76, rotating cylinders 77, arc-shaped grooves 78, sliding rods 79, L-shaped plates 700, and contact rods 701 are provided. Both sets of connecting grooves 74, gears 75, racks 76, rotating cylinders 77, arc-shaped grooves 78, sliding rods 79, L-shaped plates 700, and contact rods 701 are symmetrically arranged about the center line of the storage box 1. It is carried via the handle 3, and spring 72 releases... When the slider 71 is released and reset, the base plate 73 is reset, and at the same time the rack 76 drives the gear 75 to rotate forward. At this time, the rotating cylinder 77 rotates synchronously, and the inner wall of the arc groove 78 abuts against the surface of the abutting rod 701, which allows the sliding rod 79 and the L-shaped plate 700 to move closer to the storage box 1. At this time, the inner side of the L-shaped plate 700 abuts against the top of the box cover 2, which can limit the box cover 2 again, improve the stability between the box cover 2 and the storage box 1, and prevent the box cover 2 from falling off accidentally.

[0025] The limiting component 8 includes a stabilizing groove 80, which is located at the bottom of the storage box 1. A sliding plate 81 is slidably connected to the inner wall of the stabilizing groove 80. An insertion hole 84 is provided on the surface of the sliding plate 81. A short rod 83 is fixed to the top of the bottom plate 73. A second spring 82 is fixed to the outer surface of the sliding plate 81. The end of the second spring 82 away from the sliding plate 81 is fixed to the inner wall of the stabilizing groove 80. A pressure rod 85 is fixed to the end of the sliding plate 81 away from the second spring 82. The end of the pressure rod 85 away from the sliding plate 81 passes through the storage box 1 and is slidably connected to the storage box 1. The insertion hole 84 has the same diameter as the short rod 83. The top of the short rod 83 abuts against the bottom of the sliding plate 81, which prevents the bottom plate 73 from moving and avoids collisions that could cause the bottom plate 73 to move and affect the limiting of the L-shaped plate 700 on the box lid 2. Pressing the pressure rod 85 moves the sliding plate 81. When the position of the insertion hole 84 is parallel to the short rod 83, the bottom plate 73 moves closer to the storage box 1 under the action of gravity. A latch 4 connects the storage box 1 and the lid 2, which facilitates locking the storage box 1 and the lid 2.

[0026] When in use, place the cable to be tested into the placement slot 6 for unified transport. To use, remove the detector body 5 and the cable, and connect the cable to the detector body 5. When using the detector body 5, connect terminal E to the grounding electrode being tested. Insert the current and voltage electrodes at a position away from the grounding electrode. The device automatically outputs current and simultaneously detects voltage. By eliminating ground grid interference and wire resistance errors through an algorithm, the grounding resistance value can be displayed. When transporting, place the detector body 5 into the storage box 1 and the cable into the placement slot 6. Close the box cover 2 and lock it with the latch 4. Personnel can then carry the device via the handle 3. At this time, spring 72 releases, causing slider 71 to move down and reset. The base plate 73 resets, and as the base plate 73 moves, rack 76 drives gear 75 to rotate clockwise. The rotating drum 77 rotates synchronously, and the inner wall of the arc-shaped groove 78 contacts the surface of the contact rod 701, allowing the sliding rod 79 and L-shaped plate 700 to approach the storage box. 1. Move the L-shaped plate 700. At this point, the inner side of the L-shaped plate 700 abuts against the top of the lid 2, which further limits the lid 2 and improves the stability between the lid 2 and the storage box 1. At the same time, the top of the short rod 83 abuts against the bottom of the sliding plate 81, which prevents the base plate 73 from moving and avoids collisions that could cause the base plate 73 to move and affect the limiting effect of the L-shaped plate 700 on the lid 2. When it is necessary to open the lid 2, place the storage box 1 on a flat surface and press the lever 85 to move the sliding plate 81. When the position of the insertion hole 84 is aligned with the bottom of the storage box 1, the lid 2 is moved. When the short rod 83 is parallel, under the action of gravity, the base plate 73 moves closer to the storage box 1, and at the same time the slider 71 moves into the slide groove 70, the spring 72 is compressed, and the short rod 83 enters the insertion hole 84. At the same time, the rack 76 drives the gear 75 to reverse, and through the rotating cylinder 77, the abutment rod 701, and the arc groove 78, the slide rod 79 drives the L-shaped plate 700 away from the storage box 1. At this time, the L-shaped plate 700 is separated from the box cover 2, and the box cover 2 can be opened normally to take out the internal cables and the detector body 5 for use.

[0027] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A convenient lightning protection grounding resistance testing device, comprising a storage box (1), characterized in that: The top of the storage box (1) is movably fitted with a lid (2), the inside of the storage box (1) is fitted with a detector body (5), the inside of the storage box (1) is provided with a placement slot (6), and the bottom and inside of the storage box (1) are provided with a protective component (7) and a limiting component (8). The groove (70) is used to stabilize the movement of the slider (71); The base plate (73) is used to drive the rack (76) to move synchronously; The rack (76) is used to drive the gear (75) to rotate.

2. The convenient lightning protection grounding resistance testing device according to claim 1, characterized in that: The slide groove (70) is located at the bottom of the storage box (1). A slider (71) is slidably connected to the inner wall of the slide groove (70). A spring (72) is fixed to the top of the slider (71). The top of the spring (72) is fixed to the top of the inner wall of the slide groove (70). A base plate (73) is fixed to the bottom of the slider (71). A connecting groove (74) is provided inside the storage box (1). A rack (76) is slidably connected to the inner wall of the connecting groove (74). The bottom of the rack (76) is fixed to the top of the base plate (73). A gear (75) is rotatably connected to the inner wall of the connecting groove (74). (76) meshes with gear (75), and a rotating cylinder (77) is fixed on the inner side of the gear (75). The rotating cylinder (77) is rotatably connected to the inner wall of the connecting groove (74). A sliding rod (79) is slidably connected to the inner wall of the connecting groove (74). The sliding rod (79) passes through the rotating cylinder (77). An arc-shaped groove (78) is opened on the inner wall of the rotating cylinder (77). An abutting rod (701) is fixed on the outer surface of the sliding rod (79). The end of the abutting rod (701) away from the sliding rod (79) abuts against the inner wall of the arc-shaped groove (78). An L-shaped plate (700) is fixed on the end of the sliding rod (79) away from the rotating cylinder (77).

3. The convenient lightning protection grounding resistance testing device according to claim 1, characterized in that: The limiting component (8) includes a stabilizing groove (80), which is located at the bottom of the storage box (1). A sliding plate (81) is slidably connected to the inner wall of the stabilizing groove (80). An insertion hole (84) is provided on the surface of the sliding plate (81). A short rod (83) is fixed to the top of the bottom plate (73). A second spring (82) is fixed to the outer surface of the sliding plate (81). One end of the second spring (82) away from the sliding plate (81) is fixed to the inner wall of the stabilizing groove (80). A pressure rod (85) is fixed to one end of the sliding plate (81) away from the second spring (82). One end of the pressure rod (85) away from the sliding plate (81) passes through the storage box (1) and is slidably connected to the storage box (1).

4. The convenient lightning protection grounding resistance testing device according to claim 1, characterized in that: The storage box (1) is connected to the lid (2) by a latch (4).

5. A convenient lightning protection grounding resistance testing device according to claim 2, characterized in that: The connecting groove (74), gear (75), rack (76), rotating cylinder (77), arc groove (78), slide rod (79), L-shaped plate (700), and abutment rod (701) are all provided in two sets, and the two sets of connecting groove (74), gear (75), rack (76), rotating cylinder (77), arc groove (78), slide rod (79), L-shaped plate (700), and abutment rod (701) are all symmetrically arranged with the center line of the storage box (1) as the axis of symmetry.

6. The convenient lightning protection grounding resistance testing device according to claim 3, characterized in that: The diameter of the insertion hole (84) is the same as that of the short rod (83).

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