A portable grounding resistance meter calibration device

Abstract

This utility model discloses a portable grounding resistance meter calibration device, relating to the field of resistance meter calibration technology. It includes a housing with a cover hinged to one side. A calibration instrument body is fixedly connected inside the housing, and a test interface is provided on one side of the calibration instrument body. A knob is rotatably connected to the side of the test interface on the calibration instrument body. This utility model adopts the above structure, fixing side frames to both sides of the housing. A drive assembly, a lifting assembly, and a moving assembly are installed on the side frames. The drive assembly drives the lifting and moving components, forming a bag-like structure. Workers can move the device via the moving assembly by lifting the lifting assembly, avoiding the arm muscle fatigue and soreness caused by prolonged carrying of traditional handheld devices, reducing the risk of the equipment falling and being damaged due to physical exhaustion, and making it easy to carry, greatly improving operational convenience.

Description

Technical Field

[0001] This utility model belongs to the field of resistance meter calibration technology, and specifically relates to a portable grounding resistance meter calibration device. Background Technology

[0002] With the rapid development of the power industry, the construction scale of projects such as smart grids and ultra-high voltage power transmission is constantly expanding, and the safety requirements for the grounding system of electrical equipment are becoming increasingly stringent. The insulation grounding resistance meter calibration device is a special equipment used to calibrate, test and verify whether the performance indicators of the insulation grounding resistance meter meet the relevant standards and specifications.

[0003] Most existing portable ground resistance meter calibration devices adopt a hand-held design, which meets the mobility requirements to a certain extent, but still has obvious drawbacks. The internal calibration instrument integrates a large number of precision electronic components and power supply components, resulting in a heavy weight. In actual use, staff need to frequently carry the device to different testing locations. Carrying it for a long time can cause arm muscle fatigue and soreness, and may even increase the risk of the device falling due to physical exhaustion. Furthermore, once placed on the ground, if the working position needs to be finely adjusted, the device can only be picked up and moved again, which is very time-consuming and laborious. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a portable grounding resistance meter calibration device to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A portable grounding resistance meter calibration device includes a housing with a cover hinged to one side. A calibration instrument body is fixedly connected inside the housing. A test interface is provided on one side of the calibration instrument body. A knob is rotatably connected to the calibration instrument body on the side of the test interface. Side frames are fixedly connected to both sides of the housing. A drive assembly is provided on one side of each side frame. A lifting assembly is slidably connected to the upper side of each side frame via the drive assembly. A moving assembly is slidably connected to the lower side of each side frame via the drive assembly. Both the lifting assembly and the moving assembly have pulleys on one side.

[0007] As a preferred technical solution, the drive assembly includes an adjusting wheel, which is rotatably connected to one side of the side frame. A first toothed bevel is fixedly connected to one side of the adjusting wheel, and a second toothed bevel is fixedly connected to one side of the first toothed bevel. A bidirectional lead screw is fixedly connected to the middle of the second toothed bevel. The bidirectional lead screw is rotatably connected to the inside of the side frame. A screw block is threadedly connected to the outer surface of the bidirectional lead screw, and two screw blocks are provided. The lifting assembly is located on one side of one screw block, and the moving assembly is located on the other side of the screw block. A bracket is fixedly connected to one side of the side frame located on the adjusting wheel, and one side of the adjusting wheel is rotatably connected to the bracket.

[0008] As a preferred technical solution, the lifting assembly includes a first guide block, one side of which slides through the upper side of the side frame. The first guide block is fixedly connected to one side of a screw block. A telescopic rod is fixedly connected to the top of the first guide block. A lifting rod is fixedly connected to the top of the telescopic rod. One side of the pulley is fixedly connected to the lifting rod.

[0009] As a preferred technical solution, the moving component includes a second guide block, one side of which slides through the lower side of the side frame, the second guide block is fixedly connected to one side of another screw block, an assembly block is fixedly connected to the bottom end of the second guide block, a universal ball is rotatably connected to the side of the assembly block away from the second guide block, and one side of the pulley is fixedly connected to the assembly block.

[0010] As a preferred technical solution, guide grooves are provided on both sides of the inside of the side frame, and guide blocks are slidably connected inside the guide grooves. One side of the guide block is fixedly connected to one side of the screw block.

[0011] As a preferred technical solution, a socket is fixedly connected to one side of the box body, and a plug is fixedly connected to one side of the box cover, with the plug being movably connected to the socket.

[0012] In summary, the present invention has the following main advantages:

[0013] First, this utility model, by fixing side frames on both sides of the box, and installing a drive component, a lifting component, and a moving component on the side frames, uses the drive component to drive the lifting component and the moving component to work, forming a box structure. The staff can move the device by lifting the component and moving it by moving the component, avoiding the arm muscle fatigue and soreness caused by the heavy traditional hand-held device, reducing the risk of the equipment falling and being damaged due to physical exhaustion, making it easy to carry and greatly improving the convenience of operation;

[0014] Secondly, by installing pulleys on the lifting and moving components, the working position of this device can be finely adjusted when it is laid flat. The device can be easily adjusted by lifting it up again, which saves time and improves the efficiency of the calibration work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a side view of the box structure of this utility model;

[0017] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A;

[0018] Figure 4 This is a utility model Figure 2 A magnified structural diagram at point B.

[0019] Reference numerals: 1. Housing; 2. Cover; 4. Calibrator body; 5. Test interface; 6. Knob; 7. Side frame; 8. Lifting assembly; 81. First guide block; 82. Telescopic rod; 83. Lifting rod; 9. Moving assembly; 91. Second guide block; 92. Assembly block; 93. Universal ball bearing; 10. Pulley; 11. Drive assembly; 111. Adjusting wheel; 112. Bracket; 113. First bevel tooth; 114. Second bevel tooth; 115. Two-way lead screw; 116. Screw block; 117. Guide groove; 118. Guide block; 12. Insert block; 13. Socket. Detailed Implementation

[0020] Example

[0021] refer to Figures 1 to 4This embodiment describes a portable ground resistance meter calibration device, comprising a housing 1, with a cover 2 hinged to one side of the housing 1. A calibration instrument body 4 is fixedly connected inside the housing 1. The calibration instrument body 4 includes a resistance module, a control module, a data processing and storage module, and a power management module. The power management module provides stable power to the entire calibration instrument body 4, ensuring the normal operation of each module. When ground resistance testing is performed, the resistance module generates a standard resistance signal, providing reference data for the calibration work. The control module precisely adjusts the resistance module to generate the corresponding standard resistance signal according to the instructions input by the operator through knob 6, and controls the connection between the test interface 5 and the ground resistance meter under test, initiating the testing process. During the testing process, the measurement data of the meter under test is transmitted to the data processing and storage module, which analyzes and calculates the data, comparing it with the standard data provided by the resistance module. The comparison yields the verification results, which are then stored for easy retrieval later. The coordination of the above modules is a mature structure within the existing ground resistance meter calibrator body 4. Its specific structural principle has been widely applied and fully verified in related technical fields, and will not be repeated here. A test interface 5 is provided on one side of the calibrator body 4. A knob 6 is rotatably connected to the side of the calibrator body 4 located at the test interface 5. Side frames 7 are fixedly connected to both sides of the housing 1. A drive component 11 is provided on one side of the side frame 7. A lifting component 8 is slidably connected to the upper side of the side frame 7 through the drive component 11. A moving component 9 is slidably connected to the lower side of the side frame 7 through the drive component 11. A pulley 10 is provided on one side of both the lifting component 8 and the moving component 9. When the device is placed horizontally, the pulley 10 contacts the ground, allowing the working position to be adjusted during use without lifting the device.

[0022] refer to Figure 3The drive assembly 11 includes an adjusting wheel 111, which is rotatably connected to one side of the side frame 7. A first toothed cone 113 is fixedly connected to one side of the adjusting wheel 111, and a second toothed cone 114 is fixedly connected to one side of the first toothed cone 113. A bidirectional lead screw 115 is fixedly connected to the middle of the second toothed cone 114. The bidirectional lead screw 115 is rotatably connected to the inside of the side frame 7. A screw block 116 is threadedly connected to the outer surface of the bidirectional lead screw 115, and two screw blocks 116 are provided. A lifting assembly 8 is located on one side of one screw block 116, and a moving assembly 9 is located on the other side of the screw block 116. A bracket 112 is fixedly connected to one side of the side frame 7 located on the adjusting wheel 111. One side of the throttle wheel 111 is rotatably connected to the bracket 112. By setting the drive assembly 11, the adjustment wheel 111 is rotated, and the adjustment wheel 111 drives the first toothed cone 113 to rotate. The first toothed cone 113 drives the second toothed cone 114 to rotate, and the second toothed cone 114 drives the bidirectional lead screw 115 to rotate. Since the outer surface of the bidirectional lead screw 115 is threaded with two screw blocks 116, when the bidirectional lead screw 115 rotates, the two screw blocks 116 will move along the lead screw in opposite directions, thereby driving the lifting assembly 8 and the moving assembly 9 connected to one side to perform lifting and lowering movements respectively. The operation process is simplified by using one drive assembly 11 to drive the lifting assembly 8 and the moving assembly 9 simultaneously.

[0023] refer to Figure 2 The lifting assembly 8 includes a first guide block 81, one side of which slides through the upper side of the side frame 7. The first guide block 81 is fixedly connected to one side of a screw block 116. A telescopic rod 82 is fixedly connected to the top of the first guide block 81, and a lifting rod 83 is fixedly connected to the top of the telescopic rod 82. One side of the pulley 10 is fixedly connected to the lifting rod 83. By setting the lifting assembly 8, when the screw block 116 moves under the drive of the bidirectional screw 115, the first guide block 81 will slide through the upper side of the side frame 7 in a vertical direction under the action of the guiding structure on the upper side of the side frame 7. The telescopic rod 82 at the top of the first guide block 81 can be extended and retracted according to actual needs. The lifting rod 83 at the top of the telescopic rod 82 is for the staff to hold. The telescopic rod 82 includes a sleeve, a sliding rod, and a locking component, which is a common setting structure in the prior art. The setting of the telescopic rod 82 allows the height of the lifting rod 83 to be flexibly adjusted to meet the usage needs of staff of different heights.

[0024] refer to Figure 2The moving component 9 includes a second guide block 91, one side of which slides through the lower side of the side frame 7. The second guide block 91 is fixedly connected to one side of another screw block 116. An assembly block 92 is fixedly connected to the bottom end of the second guide block 91. A universal ball bearing 93 is rotatably connected to the side of the assembly block 92 away from the second guide block 91. One side of the pulley 10 is fixedly connected to the assembly block 92. By setting the moving component 9, the other screw block 116 moves under the action of the bidirectional lead screw 115, causing the second guide block 91 to slide through the lower side of the side frame 7. The universal ball bearing 93 rotatably connected to the assembly block 92 contacts the ground, providing support and mobility for the device. It can easily move in different directions and on complex terrain, reducing the difficulty of movement.

[0025] refer to Figure 4 The side frame 7 has guide grooves 117 on both sides inside. A guide block 118 is slidably connected inside the guide groove 117. One side of the guide block 118 is fixedly connected to one side of the screw block 116. By setting the guide groove 117 and the guide block 118, when the screw block 116 moves on the bidirectional lead screw 115, the guide block 118 slides in the guide groove 117, restricting the movement direction of the screw block 116 and ensuring that the screw block 116 slides smoothly, thereby ensuring the stable movement of the lifting assembly 8 and the moving assembly 9.

[0026] refer to Figure 1 A socket 13 is fixedly connected to one side of the box body 1, and a plug 12 is fixedly connected to one side of the box cover 2. The plug 12 and the socket 13 are movably connected. By setting the plug 12 and the socket 13, the socket 13 is provided with an elastic locking block, and the plug 12 is provided with a locking hole, so as to facilitate the connection between the box body 1 and the box cover 2.

[0027] Operating principle and advantages: When the device needs to be moved, the adjusting wheel 111 drives the first toothed cone 113 to rotate, which in turn drives the second toothed cone 114 to rotate, causing the bidirectional lead screw 115 to rotate. The two screw blocks 116 move in opposite directions along the bidirectional lead screw 115, respectively driving the lifting assembly 8 and the moving assembly 9 to move up and down. The first guide block 81 slides vertically on the side frame 7. The telescopic rod 82 can adjust the height of the lifting rod 83 as needed. The second guide block 91 drives the assembly block 92 to descend. The universal ball bearing 93 contacts the ground. The operator holds the lifting rod 83, and the device can be moved by the universal ball bearing 93. When the device is placed horizontally, the pulleys 10 on the lifting assembly 8 and the moving assembly 9 are in contact with the ground, allowing the device to be directly pushed to fine-tune its working position without lifting it. During testing, the cover 2 is opened, and the command is input to the control module via the knob 6. The control module regulates the resistance module to generate a standard resistance signal, connecting the ground resistance meter under test to the test interface 5 on one side of the calibration instrument body 4. The control module starts the testing process. During the testing process, the measurement data of the meter under test is transmitted to the data processing and storage module. This module analyzes and calculates the measurement data and the standard data provided by the resistance module, obtains the calibration result, and stores it.

Claims

1. A portable grounding resistance meter calibration device, comprising a housing (1), characterized in that: A lid (2) is hinged to one side of the housing (1). A calibration instrument body (4) is fixedly connected inside the housing (1). A test interface (5) is provided on one side of the calibration instrument body (4). A knob (6) is rotatably connected to the side of the test interface (5) of the calibration instrument body (4). Side frames (7) are fixedly connected to both sides of the housing (1). A drive assembly (11) is provided on one side of the side frame (7). A lifting assembly (8) is slidably connected to the upper side of the side frame (7) through the drive assembly (11). A moving assembly (9) is slidably connected to the lower side of the side frame (7) through the drive assembly (11). A pulley (10) is provided on one side of both the lifting assembly (8) and the moving assembly (9).

2. The portable grounding resistance meter calibration device according to claim 1, characterized in that: The drive assembly (11) includes an adjusting wheel (111), which is rotatably connected to one side of the side frame (7). A first toothed cone (113) is fixedly connected to one side of the adjusting wheel (111), and a second toothed cone (114) is fixedly connected to one side of the first toothed cone (113). A bidirectional lead screw (115) is fixedly connected to the middle of the second toothed cone (114). The bidirectional lead screw (115) is rotatably connected to the inside of the side frame (7). A screw block (116) is threadedly connected to the outer surface of the bidirectional lead screw (115), and there are two screw blocks (116). The lifting assembly (8) is located on one side of one screw block (116), and the moving assembly (9) is located on the other side of the screw block (116).

3. The portable grounding resistance meter calibration device according to claim 2, characterized in that: The side frame (7) is fixedly connected to a bracket (112) on one side of the adjusting wheel (111), and one side of the adjusting wheel (111) is rotatably connected to the bracket (112).

4. The portable grounding resistance meter calibration device according to claim 2, characterized in that: The lifting assembly (8) includes a first guide block (81), one side of which slides through the upper side of the side frame (7). The first guide block (81) is fixedly connected to one side of a screw block (116). A telescopic rod (82) is fixedly connected to the top of the first guide block (81). A lifting rod (83) is fixedly connected to the top of the telescopic rod (82). One side of the pulley (10) is fixedly connected to the lifting rod (83).

5. A portable grounding resistance meter calibration device according to claim 2, characterized in that: The moving component (9) includes a second guide block (91), one side of which slides through the lower side of the side frame (7). The second guide block (91) is fixedly connected to one side of another screw block (116). An assembly block (92) is fixedly connected to the bottom end of the second guide block (91). A universal ball bearing (93) is rotatably connected to the side of the assembly block (92) away from the second guide block (91). One side of the pulley (10) is fixedly connected to the assembly block (92).

6. A portable grounding resistance meter calibration device according to claim 2, characterized in that: The side frame (7) has guide grooves (117) on both sides inside. A guide block (118) is slidably connected inside the guide groove (117). One side of the guide block (118) is fixedly connected to one side of the screw block (116).

7. A portable grounding resistance meter calibration device according to claim 1, characterized in that: A socket (13) is fixedly connected to one side of the box body (1), and a plug (12) is fixedly connected to one side of the box cover (2). The plug (12) is movably connected to the socket (13).

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