Multipurpose inspection tool

By introducing a current sensor and a tempered glass rod into the inspection tool, the problem of electric shock caused by high leakage voltage was solved, achieving higher safety and protection, and ensuring the safe use of the inspection tool.

CN224189268UActive Publication Date: 2026-05-01CHANGCHUN URBAN CONSTR & MAINTENANCE GRP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGCHUN URBAN CONSTR & MAINTENANCE GRP CO LTD
Filing Date
2025-05-07
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing inspection tools pose a safety hazard when detecting equipment leakage, as the high leakage voltage can cause current to pass through the insulated handle and shock workers, thus reducing the safety of the equipment.

Method used

A multi-purpose inspection tool was designed, comprising a current sensor, an electric actuator, and a tempered glass rod. After the current sensor detects a current, it drives the electric actuator to spring back the handle and release it from the hand. The tempered glass rod provides additional protection against electric shock and damage to the device.

Benefits of technology

This effectively avoids the risk of electric shock to staff due to leakage, improves the safety and protection of the device, and ensures the reliable use of the inspection tools.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224189268U_ABST
    Figure CN224189268U_ABST
Patent Text Reader

Abstract

The utility model provides a multipurpose inspection tool which comprises a grip, the top of the grip is fixedly connected with a measuring tape, the top of the measuring tape is fixedly connected with a lampshade, the top of the lampshade is fixedly connected with a voltage measuring conductor, the outer wall of the lampshade is provided with a voltage indicating lamp, and the outer wall of the lampshade is provided with a protection assembly. The outer wall of the grip is fixedly sleeved with an insulating sleeve, the outer wall of the insulating sleeve is fixedly connected with a current inductor, and the outer wall of the insulating sleeve is fixedly connected with a second handle frame. When voltage penetrates through an insulating sleeve, a current sensor senses current first, the current sensor sends a signal to an electric push rod after sensing the current, one end of the electric push rod moves towards the interior of a groove, a handle rod instantly rebounds to the interior of a lifting column through the elastic force of a spring, and a worker loses the holding position; the hand is separated from the device, so that the hand is prevented from being damaged by current, and the safety of the device is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model is a multi-purpose inspection tool, belonging to the field of inspection tools. Background Technology

[0002] Patrol and inspection are important tasks for tunnel operation, bridge and road maintenance. Patrol tools refer to the various equipment and instruments used in the patrol process, which are mainly used to check and monitor the operating status and safety of equipment, such as voltage measuring devices, temperature sensors, humidity sensors, strobe lights, etc. They are used to check the temperature of fire hydrants in tunnels, read and record the temperature and humidity of equipment rooms, check for leakage in circuit cables and electrical boxes, etc., thereby meeting the needs of patrol personnel.

[0003] However, existing inspection tools use insulated handles to prevent workers from being electrocuted when checking electrical boxes for leakage. But when the leakage is severe and the leakage voltage is high, the current can pass through the insulated handle and shock the workers, which greatly reduces safety. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-purpose inspection tool to solve the problems mentioned in the background art. This utility model can prevent workers from being harmed by electric current, thereby improving the safety of the device.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-purpose inspection tool, including a handle, a measuring tape fixedly connected to the top of the handle, a lampshade fixedly connected to the top of the measuring tape, a voltage measuring conductor fixedly connected to the top of the lampshade, a voltage indicator light provided on the outer wall of the lampshade, a protective component provided on the outer wall of the lampshade, an insulating sleeve fixedly fitted onto the outer wall of the handle, and a current sensor fixedly connected to the outer wall of the insulating sleeve.

[0006] The outer wall of the insulating sleeve is fixedly connected to a second handle frame, the inner wall of the second handle frame is provided with a limiting component, the top of the second handle frame is fixedly connected to a lifting column, the inner top wall of the lifting column is fixedly connected to a spring, and the bottom of the spring is fixedly connected to a handle rod.

[0007] Furthermore, a battery slot is provided at the bottom of the grip, and a battery cover is rotatably connected to the inner wall of the battery slot.

[0008] Furthermore, the outer wall of the lampshade is equipped with a display screen, the top of the lampshade is fixedly connected to a temperature and humidity sensor, and the outer wall of the lampshade is equipped with a strobe switch.

[0009] Furthermore, the protective component includes a first fixing ring and a second fixing ring, both of which are fixedly sleeved on the outer wall of the lampshade. A tempered glass rod is fixedly connected to the bottom of the first fixing ring, and the bottom of the tempered glass rod is fixedly connected to the top of the second fixing ring.

[0010] Furthermore, the limiting component includes a groove, which is formed on the inner wall of the second handle frame, and an electric push rod is fixedly connected to the inner wall of the groove.

[0011] Furthermore, a first handle frame is fixedly connected to the outer wall of the insulating sleeve, the handle rod is slidably sleeved with the second handle frame, a limit groove is formed on the outer wall of the handle rod, and one end of the electric push rod is slidably connected to the inner wall of the limit groove.

[0012] The beneficial effects of this utility model are:

[0013] 1. When voltage passes through the insulating sleeve, the current sensor will sense the current first. After sensing the current, the current sensor will send a signal to the electric push rod. One end of the electric push rod will move into the groove, and the handle will be instantly rebounded into the lifting column by the spring force. The operator will lose his grip and his hand will be separated from the device, thus avoiding injury from the current and improving the safety of the device.

[0014] 2. The lampshade is surrounded by multiple tempered glass rods. The tempered glass rods are transparent and sturdy, which can protect the lampshade and prevent the device from being broken. This improves the protective effect of the device and further meets the usage requirements, making it worthy of promotion. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a multi-purpose inspection tool according to the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the internal structure of the first handle bracket in this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of the structure at point B.

[0020] In the diagram: 1. Handle; 2. Battery compartment; 3. Battery cover; 4. Measuring tape; 5. Lampshade; 6. Temperature and humidity sensor; 7. Voltage measuring conductor; 8. Strobe light switch; 9. Display screen; 10. Voltage indicator light; 11. First retaining ring; 12. Second retaining ring; 13. Tempered glass rod; 14. First handle support; 15. Current sensor; 16. Insulating sleeve; 17. Second handle support; 18. Groove; 19. Electric push rod; 20. Limiting groove; 21. Lifting column; 22. Spring; 23. Handle bar. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a multi-purpose inspection tool, including a handle 1, a measuring tape 4 fixedly connected to the top of the handle 1, a lampshade 5 fixedly connected to the top of the measuring tape 4, a voltage measuring conductor 7 fixedly connected to the top of the lampshade 5, a voltage indicator light 10 provided on the outer wall of the lampshade 5, when the voltage measuring conductor 7 detects voltage, the voltage indicator light 10 will light up red, and when no voltage is detected, the voltage indicator light 10 will light up green, the outer wall of the lampshade 5 is provided with a protective component, an insulating sleeve 16 is fixedly sleeved on the outer wall of the handle 1, and a current sensor 15 is fixedly connected to the outer wall of the insulating sleeve 16. The current sensor 15 is an existing device and will not be explained in detail here.

[0023] The outer wall of the insulating sleeve 16 is fixedly connected to a second handle frame 17. The inner wall of the second handle frame 17 is provided with a limiting component. The top of the second handle frame 17 is fixedly connected to a lifting column 21. The inner top wall of the lifting column 21 is fixedly connected to a spring 22. The spring 22 is in a stretched state. The bottom of the spring 22 is fixedly connected to a handle 23. When voltage passes through the insulating sleeve 16, the current sensor 15 will sense the current first.

[0024] The bottom of the handle 1 has a battery slot 2, and the inner wall of the battery slot 2 is rotatably connected to a battery cover 3. The inside of the battery slot 2 is equipped with resistors, conductive wires, etc., so that the battery can be placed inside the battery slot 2 to power the device.

[0025] The outer wall of the lampshade 5 is equipped with a display screen 9, and the top of the lampshade 5 is fixedly connected to a temperature and humidity sensor 6. The outer wall of the lampshade 5 is equipped with a strobe switch 8, and the inner wall of the lampshade 5 is equipped with strobe LEDs. The strobe LEDs are controlled to flash by the strobe switch 8. The temperature and humidity sensor 6 can measure the temperature and humidity of the equipment box and display the data on the display screen 9.

[0026] The protective assembly includes a first fixing ring 11 and a second fixing ring 12. Both the first fixing ring 11 and the second fixing ring 12 are fixedly sleeved on the outer wall of the lampshade 5. A tempered glass rod 13 is fixedly connected to the bottom of the first fixing ring 11. The bottom of the tempered glass rod 13 is fixedly connected to the top of the second fixing ring 12. There are multiple tempered glass rods 13, which surround the lampshade 5. The tempered glass rods 13 are transparent and hard, which can protect the lampshade 5 and prevent the device from being broken.

[0027] The limiting component includes a groove 18, which is formed on the inner side wall of the second handle frame 17. An electric push rod 19 is fixedly connected to the inner wall of the groove 18. After the current sensor 15 senses the current, it will send a signal to the electric push rod 19, and one end of the electric push rod 19 will move into the groove 18.

[0028] The outer wall of the insulating sleeve 16 is fixedly connected to the first handle frame 14, and the handle rod 23 is slidably sleeved with the second handle frame 17. The outer wall of the handle rod 23 is provided with a limiting groove 20. One end of the electric push rod 19 is slidably connected to the inner wall of the limiting groove 20 to fix the handle rod 23. The first handle frame 14, the second handle frame 17 and the handle rod 23 can be combined to form a handle, which is convenient for the staff to hold when testing the current. After one end of the electric push rod 19 is disengaged from the limiting groove 20, the handle rod 23 will instantly spring back into the lifting column 21 by the elastic force of the spring 22.

[0029] Working principle: First, place the battery inside the battery compartment 2 to power the device. The strobe light switch 8 controls the strobe light beads to flash. The temperature and humidity sensor 6 can measure the temperature and humidity of the equipment box and display the data on the display screen 9. The voltage measuring conductor 7 can detect the voltage. The operator can know whether there is any leakage in the equipment through the voltage indicator light 10.

[0030] Secondly, when the equipment has a serious leakage current and the voltage is high, when the voltage passes through the insulating sleeve 16, the current sensor 15 will be the first to sense the current. After sensing the current, the current sensor 15 will send a signal to the electric push rod 19. One end of the electric push rod 19 will move into the groove 18. After one end of the electric push rod 19 is disengaged from the limiting groove 20, the handle 23 will be instantly rebounded into the lifting column 21 by the elastic force of the spring 22. The operator will lose the grip position and the hand will be separated from the device, thus avoiding injury from the current.

[0031] Finally, there are multiple tempered glass rods 13, which surround the lampshade 5. The tempered glass rods 13 are transparent and hard, which can protect the lampshade 5 and prevent the device from being broken.

[0032] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-purpose inspection tool comprising a handle, characterised in that: A measuring tape is fixedly connected to the top of the grip, a lampshade is fixedly connected to the top of the measuring tape, a voltage measuring conductor is fixedly connected to the top of the lampshade, a voltage indicator light is provided on the outer wall of the lampshade, a protective component is provided on the outer wall of the lampshade, an insulating sleeve is fixedly fitted onto the outer wall of the grip, and a current sensor is fixedly connected to the outer wall of the insulating sleeve. The outer wall of the insulating sleeve is fixedly connected to a second handle frame, the inner wall of the second handle frame is provided with a limiting component, the top of the second handle frame is fixedly connected to a lifting column, the inner top wall of the lifting column is fixedly connected to a spring, and the bottom of the spring is fixedly connected to a handle rod.

2. The utility vehicle of claim 1, characterized in that: The bottom of the grip has a battery slot, and the inner wall of the battery slot is rotatably connected to a battery cover.

3. The utility vehicle of claim 1, wherein: The lampshade has a display screen on its outer wall, a temperature and humidity sensor is fixedly connected to the top of the lampshade, and a strobe switch is provided on the outer wall of the lampshade.

4. A multi-purpose inspection tool according to claim 1, characterized in that: The protective assembly includes a first fixing ring and a second fixing ring. Both the first fixing ring and the second fixing ring are fixedly sleeved on the outer wall of the lampshade. A tempered glass rod is fixedly connected to the bottom of the first fixing ring, and the bottom of the tempered glass rod is fixedly connected to the top of the second fixing ring.

5. A multi-purpose inspection tool according to claim 1, characterized in that: The limiting component includes a groove, which is formed on the inner side wall of the second handle frame, and an electric push rod is fixedly connected to the inner side of the groove.

6. The utility vehicle of claim 5, characterized in that: The outer wall of the insulating sleeve is fixedly connected to a first handle frame, the handle rod is slidably sleeved with a second handle frame, a limit groove is formed on the outer wall of the handle rod, and one end of the electric push rod is slidably connected to the inner wall of the limit groove.