CN215728334U

CN215728334U - Magnetic suction type test wire

Info

Publication number: CN215728334U
Application number: CN202120651320.9U
Authority: CN
Inventors: 柴宇栋; 孟莉; 邓晓磊; 张庆
Original assignee: Xinjiang Huadian Weihuliang New Energy Co ltd
Current assignee: Xinjiang Huadian Weihuliang New Energy Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-02-01
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a magnetic attraction type test wire which comprises a connecting end, a wire and a magnetic attraction box, wherein one end of the wire is connected with the connecting end, the other end of the wire is connected with a binding post of the magnetic attraction box, and the wire is coated by an insulating layer; the magnetic attraction box is provided with a first permanent magnet and a second permanent magnet, and the top height of the binding post is higher than the top heights of the first permanent magnet and the second permanent magnet; the bottom in the magnetic suction box is provided with a fixed seat, the fixed seat is provided with a guide groove, the magnetic suction box is provided with a through hole, one end of the wiring terminal is positioned in the guide groove, and the wiring terminal penetrates through the through hole; the binding post is provided with a limiting ring, and the limiting ring is positioned in the magnetic suction box. According to the utility model, when one person measures that one end to be grounded does not need to hold a test pen, the test wire at the end to be grounded is directly adsorbed at the metal screw of the grounding copper bar or the metal shell of the equipment connected with the grounding copper bar by utilizing the magnetic attraction property, so that the measuring work is time-saving and labor-saving.

Description

Magnetic suction type test wire

Technical Field

The utility model relates to a magnetic type test wire, and belongs to the technical field of accessory structures for instruments.

Background

The instrument with the functions of measuring the alternating current and direct current voltage and current is a necessary device in the work of a power system, helps a measurer to check whether the running condition of the device and the wiring of an electric loop are correct or not, and is of great importance to the running quality of the device. The related conventional station is different from an intelligent station, analog quantity (current and voltage) transmission of secondary equipment in the station is completed by a cable, and if the equipment meets the operation quality requirement, the integrity of secondary circuit current and voltage wiring is confirmed or abnormal elimination work is carried out by an instrument. No matter take place equipment anomaly or overhaul the period and carry out relevant experiment to equipment in daily operation, must use the instrument that possesses the alternating current-direct current voltage measurement function to carry out measurement work, the distance can reach about 2 meters 2 about the inside wiring of related dish cabinet, need hand-held meter of one hand when measuring alternating current-direct current voltage to the copper bar of ground connection still will compromise the one end ground connection of instrument test line simultaneously, another hand goes to measure the equipment under test, bring very big inconvenience for work, lead to measuring error because of test contact failure even, not only waste time and energy and still cause the hidden danger for equipment safe operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a magnetic type test wire, which can be directly adsorbed at a metal screw of a grounding copper bar or a metal shell of equipment connected with the grounding copper bar by utilizing magnetic attraction property without holding a pen-shape meter when one person measures that one end of the test wire needs to be grounded, so that the measurement work is time-saving and labor-saving, and the accuracy of the measurement work is improved.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a magnetic attraction type test wire comprises a connecting end, a wire and a magnetic attraction box, wherein one end of the wire is connected with the connecting end, the other end of the wire is connected with a binding post of the magnetic attraction box, and the wire is coated by an insulating layer; the magnetic attraction box is provided with a first permanent magnet and a second permanent magnet, and the top height of the binding post is higher than the top heights of the first permanent magnet and the second permanent magnet; the bottom in the magnetic suction box is provided with a fixed seat, the fixed seat is provided with a guide groove, the magnetic suction box is provided with a through hole, one end of the wiring terminal is positioned in the guide groove, and the wiring terminal penetrates through the through hole; the binding post is provided with a limiting ring, the limiting ring is positioned in the magnetic suction box, a spring is sleeved on the binding post, one end of the spring abuts against the limiting ring, and the other end of the spring abuts against the fixed seat; the number of the binding posts is two, and the two binding posts are located between the first permanent magnet and the second permanent magnet.

In the magnetic-type test wire, the fixing base is provided with a first conductor ring, the limiting ring is provided with a second conductor ring, the terminal passes through the first conductor ring and the second conductor ring, one end of the spring abuts against the first conductor ring, the other end of the spring abuts against the second conductor ring, and the wire is connected with the first conductor ring.

In the magnetic attraction type test wire, the cross section of the spring is rectangular, one end of the spring is fixed on the first conductor ring, and the other end of the spring is fixed on the second conductor ring.

In the aforesaid formula test wire is inhaled to magnetism, the box is inhaled to magnetism is last to have the screw hole, first permanent magnet and second permanent magnet all are located the fixed slot of screw thread post, and the screw thread post knob is in the screw hole.

Compared with the prior art, the test wire can be directly adsorbed at the metal screw of the grounding copper bar or the metal shell of the equipment connected with the grounding copper bar by utilizing the magnetic attraction property without holding a pen-shape meter when one person measures that one end to be grounded does not need to be held by hand, so that the measurement work is time-saving and labor-saving, and the accuracy of the measurement work is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a magnetic cassette according to an embodiment;

FIG. 3 is a schematic structural view of another embodiment of a magnetically attractive box;

FIG. 4 is a schematic diagram of an embodiment of a spring.

Reference numerals: 1-lead, 2-connecting end, 3-magnetic suction box, 4-threaded column, 5-first permanent magnet, 6-limiting ring, 7-binding post, 8-second conductor ring, 9-spring, 10-perforation, 11-second permanent magnet, 12-first conductor ring, 13-guide groove, 14-fixing seat and 15-threaded hole.

The utility model is further described with reference to the following figures and detailed description.

Detailed Description

Example 1 of the utility model: a magnetic type test wire comprises a connecting end 2, a lead 1 and a magnetic box 3, wherein one end of the lead 1 is connected with the connecting end 2, the other end of the lead 1 is connected with a binding post 7 of the magnetic box 3, and the lead 1 is coated by an insulating layer; the magnetic attraction box 3 is provided with a first permanent magnet 5 and a second permanent magnet 11, and the top height of the binding post 7 is higher than the top height of the first permanent magnet 5 and the top height of the second permanent magnet 11; a fixed seat 14 is arranged at the bottom in the magnetic attraction box 3, a guide groove 13 is arranged on the fixed seat 14, a through hole 10 is arranged on the magnetic attraction box 3, one end of the binding post 7 is positioned in the guide groove 13, and the binding post 7 penetrates through the through hole 10; a limiting ring 6 is arranged on the binding post 7, the limiting ring 6 is positioned in the magnetic absorption box 3, a spring 9 is sleeved on the binding post 7, one end of the spring 9 props against the limiting ring 6, and the other end of the spring 9 props against the fixed seat 14; the number of the binding posts 7 is two, and the two binding posts 7 are located between the first permanent magnet 5 and the second permanent magnet 11.

Example 2: a magnetic type test wire comprises a connecting end 2, a lead 1 and a magnetic box 3, wherein one end of the lead 1 is connected with the connecting end 2, the other end of the lead 1 is connected with a binding post 7 of the magnetic box 3, and the lead 1 is coated by an insulating layer; the magnetic attraction box 3 is provided with a first permanent magnet 5 and a second permanent magnet 11, and the top height of the binding post 7 is higher than the top height of the first permanent magnet 5 and the top height of the second permanent magnet 11; a fixed seat 14 is arranged at the bottom in the magnetic attraction box 3, a guide groove 13 is arranged on the fixed seat 14, a through hole 10 is arranged on the magnetic attraction box 3, one end of the binding post 7 is positioned in the guide groove 13, and the binding post 7 penetrates through the through hole 10; a limiting ring 6 is arranged on the binding post 7, the limiting ring 6 is positioned in the magnetic absorption box 3, a spring 9 is sleeved on the binding post 7, one end of the spring 9 props against the limiting ring 6, and the other end of the spring 9 props against the fixed seat 14; the number of the binding posts 7 is two, and the two binding posts 7 are located between the first permanent magnet 5 and the second permanent magnet 11.

The fixed seat 14 is provided with a first conductor ring 12, the limit ring 6 is provided with a second conductor ring 8, the binding post 7 passes through the first conductor ring 12 and the second conductor ring 8, one end of the spring 9 abuts against the first conductor ring 12, the other end of the spring 9 abuts against the second conductor ring 8, and the lead 1 is connected with the first conductor ring 12. The spring 9 has a rectangular cross section, one end of the spring 9 is fixed to the first conductive ring 12, and the other end of the spring 9 is fixed to the second conductive ring 8.

Example 3: a magnetic type test wire comprises a connecting end 2, a lead 1 and a magnetic box 3, wherein one end of the lead 1 is connected with the connecting end 2, the other end of the lead 1 is connected with a binding post 7 of the magnetic box 3, and the lead 1 is coated by an insulating layer; the magnetic attraction box 3 is provided with a first permanent magnet 5 and a second permanent magnet 11, and the top height of the binding post 7 is higher than the top height of the first permanent magnet 5 and the top height of the second permanent magnet 11; a fixed seat 14 is arranged at the bottom in the magnetic attraction box 3, a guide groove 13 is arranged on the fixed seat 14, a through hole 10 is arranged on the magnetic attraction box 3, one end of the binding post 7 is positioned in the guide groove 13, and the binding post 7 penetrates through the through hole 10; a limiting ring 6 is arranged on the binding post 7, the limiting ring 6 is positioned in the magnetic absorption box 3, a spring 9 is sleeved on the binding post 7, one end of the spring 9 props against the limiting ring 6, and the other end of the spring 9 props against the fixed seat 14; the number of the binding posts 7 is two, and the two binding posts 7 are located between the first permanent magnet 5 and the second permanent magnet 11.

The fixed seat 14 is provided with a first conductor ring 12, the limit ring 6 is provided with a second conductor ring 8, the binding post 7 passes through the first conductor ring 12 and the second conductor ring 8, one end of the spring 9 abuts against the first conductor ring 12, the other end of the spring 9 abuts against the second conductor ring 8, and the lead 1 is connected with the first conductor ring 12. The spring 9 has a rectangular cross section, one end of the spring 9 is fixed to the first conductive ring 12, and the other end of the spring 9 is fixed to the second conductive ring 8. The magnetic attraction box 3 is provided with a threaded hole 15, the first permanent magnet 5 and the second permanent magnet 11 are both positioned in a fixing groove of the threaded column 4, and the threaded column 4 is screwed in the threaded hole 15.

The working principle of one embodiment of the utility model is as follows: the connecting end 2 is used for fixing a signal acquisition port of a universal meter or other instruments, and when the grounding is needed, the magnetic suction box 3 is adsorbed at a metal screw of a grounding copper bar or a metal shell of equipment connected with the grounding copper bar through the first permanent magnet 5 and the second permanent magnet 11. The spring 9 is pressed by the binding post 7 under the stress, and due to the adoption of the spring 9 with the rectangular cross section, the contact area between the spring 9 and the first conductor ring 12 and the contact area between the spring 9 and the second conductor ring 8 are larger, the electric conductivity is better, the first conductor ring 12 is connected with the lead 1, and the connection between the lead 1 and the binding post 7 is firmer than the connection between the lead 1 and the binding post 7 directly, because the first conductor ring 12 is fixed. The connection of the line 1 to both the terminal 7 and the first conductor loop 8 serves as a double safety feature. The positions of the first permanent magnet 5 and the second permanent magnet 11 on the magnetic attraction box 3 can be changed by turning the threaded column 4, so that the magnetic attraction box 3 can be attracted to different peripheral devices.

Claims

1. A magnetic suction type test wire is characterized by comprising a connecting end (2), a wire (1) and a magnetic suction box (3), wherein one end of the wire (1) is connected with the connecting end (2), the other end of the wire (1) is connected with a binding post (7) of the magnetic suction box (3), and the wire (1) is coated by an insulating layer; the magnetic attraction box (3) is provided with a first permanent magnet (5) and a second permanent magnet (11), and the top height of the binding post (7) is higher than the top height of the first permanent magnet (5) and the second permanent magnet (11); a fixed seat (14) is arranged at the bottom in the magnetic attraction box (3), a guide groove (13) is formed in the fixed seat (14), a through hole (10) is formed in the magnetic attraction box (3), one end of the binding post (7) is located in the guide groove (13), and the binding post (7) penetrates through the through hole (10); a limiting ring (6) is arranged on the binding post (7), the limiting ring (6) is positioned in the magnetic absorption box (3), a spring (9) is sleeved on the binding post (7), one end of the spring (9) abuts against the limiting ring (6), and the other end of the spring (9) abuts against the fixed seat (14); the number of the binding posts (7) is two, and the two binding posts (7) are located between the first permanent magnet (5) and the second permanent magnet (11).

2. A magnetic attraction type test wire according to claim 1, characterized in that the fixing base (14) is provided with a first conductor ring (12), the limit ring (6) is provided with a second conductor ring (8), the terminal (7) passes through the first conductor ring (12) and the second conductor ring (8), one end of the spring (9) abuts against the first conductor ring (12), the other end of the spring (9) abuts against the second conductor ring (8), and the wire (1) is connected with the first conductor ring (12).

3. A magnetic-type test wire according to claim 2, wherein the cross-section of the spring (9) is rectangular, one end of the spring (9) being fixed to the first conductor ring (12) and the other end of the spring (9) being fixed to the second conductor ring (8).

4. A magnetic type test wire according to claim 3, characterized in that the magnetic type box (3) has a threaded hole (15), the first permanent magnet (5) and the second permanent magnet (11) are both located in the fixing groove of the threaded column (4), and the threaded column (4) is screwed in the threaded hole (15).