A ground resistance testing device

Abstract

The utility model belongs to resistance test technical field, concretely relates to a grounding resistance testing device, including lower casing, with lower casing rotationally connected upper casing and install in the testing arrangement of lower casing, install in the upper casing quick -witted line device and line arranging device, the quick -witted line device includes motor fixed mounting on the inner side wall of upper casing, be equipped with quick -coupling on the pivot of motor, the quick -witted line device still includes the mounting plate fixed mounting in the bottom of upper casing, be rotatably connected with the quick -witted cylinder on the mounting plate, the utility model has added quick -witted line device and line arranging device in the upper casing, take out the limit rod when paying off, and will test the wire through the limit bolt, then can pull out outwardly, three quick -witted cylinders are independent of each other, can quickly pull out any one test wire, install the limit rod when winding, then start motor can quickly recycle test wire, simple operation, need not to carry a bunch of test line alone, make quick -witted line more convenient and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of resistance testing technology, specifically relating to a grounding resistance testing device. 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. In order to ensure the normal use of grounding resistance, grounding resistance testing devices are usually used to test it. Grounding resistance testing devices measure the grounding resistance of various devices and the resistance value of low-resistance conductors. With the development of society, more and more types of grounding resistance testing devices have emerged on the market, but existing devices still have certain defects.

[0003] Current grounding resistance testing devices require additional test leads, which are often quite long and prone to tangling during winding, reducing efficiency and making it inconvenient to carry multiple test leads. Therefore, this invention proposes a grounding resistance testing device. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the present invention provides a grounding resistance testing device to solve the problems in the background technology.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A grounding resistance testing device includes a lower housing, an upper housing rotatably connected to the lower housing, and a testing device installed in the lower housing. The upper housing is equipped with a wire take-up device and a wire laying device. The wire take-up device includes a motor fixedly installed on the inner side wall of the upper housing. A quick connector is provided on the shaft of the motor. The wire take-up device also includes a mounting plate fixedly installed at the bottom of the upper housing. A wire take-up drum is rotatably connected to the mounting plate.

[0007] Furthermore, the take-up device also includes a connecting rod located in the middle of the take-up drum, the connecting rod having a polygonal through hole inside and limiting blocks at both ends;

[0008] Furthermore, the take-up device also includes a circular hole on the side wall of the upper housing that is opposite to the polygonal through hole, and a limiting rod that passes through the circular hole and is detachably connected to the quick connector.

[0009] Furthermore, the wiring device includes a main gear sleeved on the motor shaft, the main gear meshing with a driven gear fixedly mounted on a slide column, the two ends of the slide column being rotatably connected to a fixed plate, and the slide column being provided with a sliding groove.

[0010] Furthermore, the wiring device also includes a first slide rod fixedly installed between the fixing plates, a first slider sleeved on the first slide rod, a second slider rotatably connected to the top of the first slider, and the top of the second slider being movably connected to the slide groove.

[0011] Furthermore, the cable routing device also includes a second slide rod with one end connected to the side wall of the first slider, and the other end extending outward through the fixing plate. A cable-pulling rod is provided at the top of the extended end of the second slide rod.

[0012] Furthermore, the testing device includes a controller body installed inside the lower housing. The top of the controller body is connected to a test knob, a display screen, and operation buttons. The top of the controller body is also equipped with wiring terminals.

[0013] Furthermore, a limit pin can be detachably installed on the top of the upper housing, and a power supply for the upper housing can be detachably installed on its bottom.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] 1. This utility model adds a wire take-up device and a wire laying device to the upper shell. When releasing the wire, take out the limiting rod, pass the test wire through the limiting pin, and then pull it outward. At this time, the three wire take-up drums are independent of each other, and any test wire can be quickly pulled out. When taking the wire back, install the limiting rod, and then start the motor to quickly retract the test wire. The operation is simple and there is no need to carry a bunch of test wires separately, making wire take-up more convenient and efficient.

[0016] 2. Furthermore, during the winding process, the second slide bar on the winding device drives the wire-pulling lever to move back and forth to the left and right, making the test wire more evenly wound on the winding drum. This effectively prevents the test wire from tangling and facilitates subsequent use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a grounding resistance testing device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the wire take-up device structure of an embodiment of the grounding resistance testing device of this utility model;

[0019] Figure 3 This is a schematic diagram of the take-up drum and upper shell structure of an embodiment of the grounding resistance testing device of this utility model;

[0020] Figure 4 This is a schematic diagram of the wiring device of an embodiment of the grounding resistance testing device of this utility model.

[0021] The reference numerals in the accompanying drawings include:

[0022] 1. Lower housing; 2. Controller body; 3. Test knob; 4. Display screen; 5. Operation button; 6. Upper housing; 7. Retractor; 8. Limiting rod; 9. Cable routing device; 10. Round hole; 11. Retractor; 12. Motor; 13. Quick connector; 14. Mounting plate; 15. Terminal block; 16. Limiting pin; 17. Connecting rod; 18. Polygonal through hole; 19. Limiting block; 20. Fixing plate; 21. Sliding column; 22. Sliding groove; 23. First sliding rod; 24. First slider; 25. Second slider; 26. Second sliding rod; 27. Cable guide rod; 28. Driven gear; 29. ​​Upper housing power supply; 30. Main gear. Detailed Implementation

[0023] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it 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 based on the specific circumstances.

[0027] Example 1:

[0028] like Figure 1-4As shown, a grounding resistance testing device includes a lower housing 1, an upper housing 6 rotatably connected to the lower housing 1, and a testing device installed in the lower housing 1. The upper housing 6 is equipped with a wire take-up device 7 and a wire laying device 9. The wire take-up device 7 includes a motor 12 fixedly installed on the inner side wall of the upper housing 6. The shaft of the motor 12 is provided with a quick connector 13. The wire take-up device 7 also includes a mounting plate 14 fixedly installed at the bottom of the upper housing 6. A wire take-up drum 11 is rotatably connected to the mounting plate 14.

[0029] Furthermore, the take-up device 7 also includes a connecting rod 17 disposed in the middle of the take-up drum 11. The connecting rod 17 has a polygonal through hole 18 inside and limit blocks 19 at both ends.

[0030] Furthermore, the take-up device 7 also includes a circular hole 10 on the side wall of the upper housing 6 opposite the polygonal through hole 18, and a limiting rod 8 that passes through the circular hole 10 and through the polygonal through hole 18 and is detachably connected to the quick connector.

[0031] Furthermore, the wiring device 9 includes a main gear 30 sleeved on the rotating shaft of the motor 12. The main gear 30 is meshed with a driven gear 28 fixedly mounted on a sliding column 21. Both ends of the sliding column 21 are rotatably connected to the fixed plate 20. The sliding column 21 is provided with a sliding groove 22.

[0032] Furthermore, the wiring device 9 also includes a first slide rod 23 fixedly installed between the fixing plates 20. A first slider 24 is sleeved on the first slide rod 23. A second slider 25 is rotatably connected to the top of the first slider 24. The top of the second slider 25 is movably connected to the slide groove 22.

[0033] Furthermore, the cable routing device 9 also includes a second slide rod 26 with one end connected to the side wall of the first slider 24, and the other end of which extends outward through the fixing plate 20. A cable-pulling rod 27 is provided at the top of the extended end of the second slide rod 26.

[0034] Furthermore, the testing device includes a controller body 2 installed inside the lower housing 1. The top of the controller body 2 is connected to a test knob 3, a display screen 4, and an operation button 5. The top of the controller body 2 is also provided with a wiring terminal 15.

[0035] Furthermore, a limit pin 16 is detachably installed on the top of the upper housing 6, and an upper housing power supply 29 is detachably installed on its bottom.

[0036] like Figure 1 - Figure 4As shown, the working principle of this device is as follows: First, install the test lead. When releasing the lead, remove the limiting rod 8 and pass the test lead through the limiting pin 16. Then pull it outward and install the end of the test lead on the auxiliary electrode and probe at the corresponding position. At this time, the three take-up drums 11 are independent of each other, and any test lead can be quickly pulled out. Then, start the controller body 2 by operating button 5, connect the terminal of the test lead to the terminal 15 on the test device, rotate the test knob 3 and observe the value on the display screen 4 to determine whether the grounding resistance is installed correctly. When taking the lead, remove the terminal 15 and fix it on the take-up drum 11. Pass the limiting rod 8 through the round hole 10 and the polygonal through hole 18 and install it with the quick connector 13. Then start the motor 12 to quickly retract the test lead. The operation is simple and there is no need to carry a bunch of test leads separately, making the take-up more convenient and efficient.

[0037] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A grounding resistance testing device, comprising a lower housing (1), an upper housing (6) rotatably connected to the lower housing (1), and a testing device installed in the lower housing (1), characterized in that: The upper housing (6) is equipped with a take-up device (7) and a cable laying device (9). The take-up device (7) includes a motor (12) fixedly installed on the inner side wall of the upper housing (6). A quick connector (13) is provided on the shaft of the motor (12). The take-up device (7) also includes a mounting plate (14) fixedly installed on the bottom of the upper housing (6). A take-up drum (11) is rotatably connected to the mounting plate (14). The take-up device (7) also includes a connecting rod (17) provided in the middle of the take-up tube (11). The connecting rod (17) has a polygonal through hole (18) inside and limit blocks (19) at both ends. The take-up device (7) also includes a circular hole (10) on the side wall of the upper housing (6) facing the polygonal through hole (18) and a limiting rod (8) that passes through the circular hole (10) and through the polygonal through hole (18) and is detachably connected to the quick connector.

2. The grounding resistance testing device as described in claim 1, characterized in that: The wiring device (9) includes a main gear (30) sleeved on the shaft of the motor (12), the main gear (30) meshing with a driven gear (28) fixedly mounted on a slide column (21), the two ends of the slide column (21) being rotatably connected to a fixed plate (20), and the slide column (21) being provided with a slide groove (22).

3. The grounding resistance testing device as described in claim 2, characterized in that: The wiring device (9) further includes a first slide rod (23) fixedly installed between the fixed plates (20), a first slider (24) is sleeved on the first slide rod (23), a second slider (25) is rotatably connected to the top of the first slider (24), and the top of the second slider (25) is movably connected to the slide groove (22).

4. The grounding resistance testing device as described in claim 3, characterized in that: The wiring device (9) further includes a second slide rod (26) with one end connected to the side wall of the first slider (24), and the other end of which extends outward through the fixing plate (20). The top of the extended end of the second slide rod (26) is provided with a wire-pulling rod (27).

5. The grounding resistance testing device as described in claim 4, characterized in that: The testing device includes a controller body (2) installed inside the lower housing (1). The top of the controller body (2) is connected to a test knob (3), a display screen (4) and an operation button (5). The top of the controller body (2) is also provided with a wiring terminal (15).

6. The grounding resistance testing device as described in claim 5, characterized in that: The top of the upper housing (6) is detachably fitted with a limit pin (16), and the bottom of the upper housing is detachably fitted with an upper housing power supply (29).

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