A hand-operated ground resistance measuring instrument special box

Abstract

The utility model discloses a hand -operated formula grounding resistance measuring instrument special box, including the storage box, the inside of storage box is equipped with first storage groove and second storage groove, and the first storage groove is provided with a take -up mechanism in twofold respectively, and the inside of first storage groove places the grounding resistance measuring instrument, is equipped with the terminal on the grounding resistance measuring instrument, and the wire is respectively wound on two take -up mechanisms, and the storage box still places the probe in, second storage groove is used for placing movable combustible gas alarm, take -up mechanism includes support frame. The utility model discloses through the first rotary motor drive reel realizes the wire automatic take -up, and the linkage structure of collocating reciprocating screw rod and horizontal moving frame lets the wire even wind on the reel, completely replaces traditional manual reel mode, solves the problem of wire tangling, abrasion, and the wiring take -up time is greatly shortened, and the grounding resistance measurement operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of grounding resistance measuring instruments, and in particular to a special box for a hand-cranked grounding resistance measuring instrument. Background Technology

[0002] As a place for storing flammable and explosive oils, the reliability of the grounding system in oil depots is directly related to lightning protection, static electricity prevention, equipment safety, and personnel life protection. Measuring grounding resistance is an indispensable core aspect of oil depot safety management. Currently, the commonly used grounding resistance measuring instrument in oil depots is the traditional hand-cranked grounding resistance tester, the "ZC type grounding resistance tester."

[0003] The advantages of this type of instrument are: no external power supply is required, and the mechanical structure is simple and reliable. However, because the instrument requires the installation of two probes and wires of 20m and 40m before measurement, more than 50% of the time is spent on wiring and winding the wires during grounding resistance measurement, which is extremely inconvenient. The wiring and winding process for measurement was originally done manually by coiling the wires, which was inefficient and caused the wires to easily become tangled and wear out.

[0004] In practice, the operation of traditional hand-cranked grounding resistance testers is complicated and time-consuming. The inconvenience of measurement itself does not directly lead to falsification of records, but the long-term cumbersome operation increases the risk that employees will falsify records because they find it troublesome. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides a dedicated box for a hand-cranked grounding resistance measuring instrument.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A special box for a hand-cranked ground resistance meter includes a storage box. The storage box has a first storage slot and a second storage slot inside. Each of the two storage slots of the first storage slot is provided with a wire winding and unwinding mechanism. The ground resistance meter is placed inside the first storage slot. The ground resistance meter is provided with a terminal block. The two wire winding and unwinding mechanisms are respectively wound with wires. The storage box also contains a probe. The second storage slot is used to place a portable combustible gas alarm; The take-up and unwinding mechanism includes a support frame on which a winding reel is mounted. The winding reel is driven to rotate by a first rotary motor to take up and unwind the wire.

[0007] Preferably, the support frame is further equipped with a reciprocating lead screw and a first guide rod, and a horizontal moving frame is provided above the winding reel.

[0008] Preferably, the reciprocating lead screw passes through the horizontal moving frame through a threaded hole, and the first guide rod passes through the horizontal moving frame through a guide hole.

[0009] Preferably, a first gear is fixed to one end of the reciprocating lead screw, and a second gear is fixed on the support shaft of the winding reel, with the first gear meshing with the second gear.

[0010] Preferably, a support plate is fixed on the horizontal moving frame, and a threading hole is opened on the support plate. Rubber rollers are rotatably installed on both sides of the threading hole at the top of the support plate. One of the rubber rollers is driven to rotate by a second rotary motor, and a third gear is fixed on both rubber rollers. The two rubber rollers with third gears mesh with each other.

[0011] Preferably, both the first and second storage slots are provided with limiting and fixing mechanisms. The limiting and fixing mechanisms include a fixed clamping plate, a movable clamping plate, a threaded rod, and a second guide rod. The fixed clamping plate and the movable clamping plate are arranged opposite to each other. The movable clamping plate is provided with a threaded sleeve and a guide sleeve on the side away from the fixed clamping plate. The guide sleeve is slidably installed on the outside of the second guide rod, and the threaded sleeve is threadedly installed on the outside of the threaded rod. A knob is fixed on the threaded rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The automatic winding and unwinding of the wire is achieved by driving the winding reel with the first rotary motor. Combined with the linkage structure of the reciprocating screw and the horizontal moving frame, the wire is evenly wound on the winding reel, completely replacing the traditional manual winding method. This solves the problems of wire tangling and wear, greatly shortens the wire winding time, and improves the efficiency of grounding resistance measurement.

[0013] The wire threading hole, combined with the bidirectional rotating rubber roller design, not only assists in the smooth entry and exit of the wire, but also prevents excessive pulling and damage when the cable gets stuck by slipping. Compared with manual wire pulling, it is gentler and effectively protects the integrity of the wire.

[0014] The storage box has two storage compartments, which can store a grounding resistance measuring instrument and a portable combustible gas alarm at the same time. The probe and wire can also be stored at the same time, realizing the integrated carrying of measuring tools and safety monitoring equipment, which meets the operational needs of the flammable and explosive environment of oil depots.

[0015] The limit fixing mechanism can be adjusted by turning the knob to flexibly adjust the clamping distance and firmly fix the instrument in the storage slot, avoiding equipment damage caused by collision during transportation and improving the stability and durability of the overall structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a top view of the entire utility model; Figure 3 This is a top view of the wire take-up and unwinding mechanism of this utility model; Figure 4 This is a side view of the wire take-up and unwinding mechanism of this utility model; Figure 5 This is an enlarged detail view of the horizontal moving frame of this utility model; Figure 6 This is a schematic diagram of the limiting and fixing mechanism of this utility model; In the diagram: 1. Storage box; 2. First storage slot; 201. Second storage slot; 202. Fixed clamping plate; 203. Movable clamping plate; 204. Threaded sleeve; 205. Guide sleeve; 206. Threaded rod; 207. Second guide rod; 208. Knob; 3. Grounding resistance measuring instrument; 301. Terminal block; 4. Cable winding and unwinding mechanism; 401. Support frame; 402. Winding reel; 403. First rotary motor; 404. Second gear; 405. Reciprocating lead screw; 406. First guide rod; 407. First gear; 5. Horizontal moving frame; 501. Support plate; 502. Wire hole; 503. Rubber roller; 504. Third gear; 505. Second rotary motor. 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 embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example

[0020] Reference Figure 1-6A special box for a hand-cranked ground resistance measuring instrument includes a storage box 1. The storage box 1 has a first storage slot 2 and a second storage slot 201 inside. Each of the two storage slots of the first storage slot 2 is provided with a wire winding and unwinding mechanism 4. The ground resistance measuring instrument 3 is placed inside the first storage slot 2. The ground resistance measuring instrument 3 is provided with a terminal block 301. Wires are wound on the two wire winding and unwinding mechanisms 4 respectively. A probe is also placed inside the storage box 1. The second storage compartment 201 is used to place a portable combustible gas alarm. The take-up and unwinding mechanism 4 includes a support frame 401, on which a winding disc 402 is mounted. The winding disc 402 is driven to rotate by a first rotary motor 403 to take up and unwind the wire. In use, connect one end of the cable to the terminal block 301, and then drive the winding reel 402 to rotate and release the cable through the first rotary motor 403. After use, retract the cable into the winding reel 402.

[0021] The support frame 401 is also equipped with a reciprocating lead screw 405 and a first guide rod 406. A horizontal moving frame 5 is also provided above the winding reel 402. The reciprocating lead screw 405 passes through the horizontal moving frame 5 through a threaded hole, and the first guide rod 406 passes through the horizontal moving frame 5 through a guide hole. A first gear 407 is fixed to one end of the reciprocating lead screw 405. A second gear 404 is fixed on the support shaft of the winding reel 402. The first gear 407 meshes with the second gear 404. During the winding and unwinding process, the rotation of the winding reel 402 will drive the second gear 404 to rotate. The meshing of the second gear 404 with the first gear 407 can drive the reciprocating lead screw 405 to rotate, thereby driving the horizontal moving frame 5 to move horizontally reciprocally.

[0022] A support plate 501 is fixed on the horizontal moving frame 5. A wire-passing hole 502 is provided on the support plate 501. Rubber rollers 503 are rotatably mounted on both sides of the top of the support plate 501 at the wire-passing hole 502. One of the rubber rollers 503 is driven to rotate by a second rotary motor 505, and a third gear 504 is fixed on both rubber rollers 503. The two third gears 504 mesh with each other. When the horizontal moving frame 5 moves horizontally back and forth, the cable passes through the wire-passing hole 502, allowing the cable winding position to be continuously changed during winding, so that the cable can be evenly distributed on the winding reel. 402, and the second rotary motor 505 drives one of the rubber rollers 503 to rotate. Through the meshing of the third gear 504, the other rubber roller 503 is driven to rotate synchronously in the opposite direction. The cable is clamped between the two rubber rollers 503. The two rubber rollers 503 rotate in opposite directions, which can drive the cable to move. The specific direction of movement depends on the direction of rotation. Therefore, during the cable winding and unwinding process, the cable can automatically enter and exit. When the cable gets stuck, it will slip and will not cause damage to the cable. Compared with manual cable pulling, there will be no situation where excessive force is used to damage the cable, and the cable is less likely to become tangled.

[0023] The first storage slot 2 and the second storage slot 201 are both provided with a limiting and fixing mechanism. The limiting and fixing mechanism includes a fixed clamping plate 202, a movable clamping plate 203, a threaded rod 206 and a second guide rod 207. The fixed clamping plate 202 and the movable clamping plate 203 are arranged opposite to each other. The movable clamping plate 203 is provided with a threaded sleeve 204 and a guide sleeve 205 on the side away from the fixed clamping plate 202. The guide sleeve 205 is slidably installed on the outside of the second guide rod 207. The threaded sleeve 204 is threadedly installed on the outside of the threaded rod 206, and a knob 208 is fixed on the threaded rod 206. The knob 208 can drive the threaded rod 206 to rotate, and then the threaded engagement between the threaded rod 206 and the threaded sleeve 204 can drive the movable clamping plate 203 to move. By adjusting the distance between the movable clamping plate 203 and the fixed clamping plate 202, the position of the grounding resistance measuring instrument 3 can be firmly locked to prevent collisions during transport and damage to the instrument.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A special box for a hand-cranked grounding resistance measuring instrument, comprising a storage box (1), characterized in that: The storage box (1) is provided with a first storage slot (2) and a second storage slot (201) inside. Each of the two storage slots (2) is provided with a wire winding and unwinding mechanism (4). A grounding resistance measuring instrument (3) is placed inside the first storage slot (2). The grounding resistance measuring instrument (3) is provided with a terminal block (301). Wires are wound on the two wire winding and unwinding mechanisms (4). A probe is also placed inside the storage box (1). The second storage slot (201) is used to place a portable combustible gas alarm; The take-up and release mechanism (4) includes a support frame (401), on which a winding disc (402) is mounted. The winding disc (402) is driven to rotate by a first rotary motor (403) to take up and release the wire.

2. The special box for a hand-cranked grounding resistance measuring instrument according to claim 1, characterized in that: The support frame (401) is also equipped with a reciprocating lead screw (405) and a first guide rod (406), and a horizontal moving frame (5) is provided above the winding reel (402).

3. The special box for a hand-cranked grounding resistance measuring instrument according to claim 2, characterized in that: The reciprocating lead screw (405) passes through the horizontal moving frame (5) through the threaded hole, and the first guide rod (406) passes through the horizontal moving frame (5) through the guide hole.

4. The special box for a hand-cranked grounding resistance measuring instrument according to claim 3, characterized in that: One end of the reciprocating lead screw (405) is fixed with a first gear (407), and a second gear (404) is fixed on the support shaft of the winding reel (402). The first gear (407) meshes with the second gear (404).

5. A special box for a hand-cranked grounding resistance measuring instrument according to claim 4, characterized in that: A support plate (501) is fixed on the horizontal moving frame (5). A threading hole (502) is provided on the support plate (501). Rubber rollers (503) are rotatably installed on both sides of the threading hole (502) at the top of the support plate (501). One of the rubber rollers (503) is driven to rotate by a second rotary motor (505). A third gear (504) is fixed on both rubber rollers (503), and the two rubber rollers (503) mesh with each other.

6. The special box for a hand-cranked grounding resistance measuring instrument according to claim 1, characterized in that: The first storage slot (2) and the second storage slot (201) are both provided with a limiting and fixing mechanism. The limiting and fixing mechanism includes a fixed clamping plate (202), a movable clamping plate (203), a threaded rod (206), and a second guide rod (207). The fixed clamping plate (202) and the movable clamping plate (203) are arranged opposite to each other. The movable clamping plate (203) is provided with a threaded sleeve (204) and a guide sleeve (205) on the side away from the fixed clamping plate (202). The guide sleeve (205) is slidably installed on the outside of the second guide rod (207). The threaded sleeve (204) is threadedly installed on the outside of the threaded rod (206), and a knob (208) is fixed on the threaded rod (206).

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