CN203376347U - Portable tool used for remote signal transmission test - Google Patents

Abstract

The utility model relates to a portable tool for testing remote signal transmission tests. It includes a screw with an insulating handle, an insulating sleeve, a slotted screwdriver located in the insulating sleeve, and a wire connecting the slotted screwdriver and the screw; the slotted screwdriver is composed of an insulating handle and a metal cone head; the insulating sleeve The upper and lower openings of the barrel, the upper part of the insulating handle of the slotted screwdriver protrudes from the upper opening of the insulating sleeve, and the metal cone head of the slotted screwdriver is facing the lower opening of the insulating sleeve; There is a first limiting ring, the inner diameter of which is larger than the diameter of the insulating handle of the slotted screwdriver; a second limiting ring is arranged outside the insulating handle of the slotted screwdriver, and its outer diameter is larger than that of the first limiting ring The inner diameter of the second limiting ring is located at the lower part of the first limiting ring; the spring is sleeved on the metal cone head of the flat screwdriver; one end of the wire is connected to the nut of the screw, and the other One end is connected with the metal taper head of the slotted screwdriver through a hole on the side wall of the insulating sleeve. The utility model has the advantages of low cost, convenient use, reduced potential safety hazards and improved work efficiency.

Description

Portable tool for testing telematics transmission trials

technical field

The utility model relates to a portable tool for testing remote signal transmission tests, which is suitable for remote signal transmission tests of measurement and control devices in electric power systems.

Background technique

The remote signal transmission test of the measurement and control device is often involved in the daily production, transformation, acceptance and defect elimination of the power system. The transmission test work will involve the work of live short circuit and live disconnection. At this stage, the signal transmission work is completely done manually by team members, and the tools used are a wire and a screwdriver. To transmit a signal under normal circumstances, it is necessary to use wires to short-circuit the positive electricity of the common terminal on the terminal block to the signal terminal; in special cases (such as normally closed nodes or relay pull-in), it is necessary to remove the external circuit of the signal terminal on the terminal block to reset Signal. In the process of working, it often occurs that signals that need to be disconnected and shorted are interspersed with each other, which makes the work efficiency of the staff low. And the voltage level of all signal circuits is 220V DC strong current, which leads to the risk of DC grounding when using wires to short-circuit or remove the external circuit, and the staff are in danger of electric shock.

Utility model content

The technical problem to be solved by the utility model is to provide a portable tool for testing remote signal transmission tests.

The technical solution adopted by the utility model to solve its technical problems:

The utility model comprises a screw with an insulating handle, an insulating sleeve, a screwdriver located in the insulating sleeve, and a wire connecting the screwdriver and the screw;

The flat screwdriver is composed of an insulating handle and a metal cone head; the upper and lower openings of the insulating sleeve, the upper part of the insulating handle of the flat screwdriver protrudes from the upper opening of the insulating sleeve, and the metal cone of the flat screwdriver The head is directly facing the lower opening of the insulating sleeve; a first limit ring is provided on the inner side of the upper part of the insulating sleeve, and its inner diameter is larger than the diameter of the insulating handle of the flat screwdriver; There is a second limiting ring, the outer diameter of which is greater than the inner diameter of the first limiting ring; the second limiting ring is located at the bottom of the first limiting ring; On the metal cone head; one end of the wire is connected to the nut of the screw, and the other end is connected to the metal cone head of the slotted screwdriver through a hole on the side wall of the insulating sleeve.

The positive effects produced by the utility model are as follows: the utility model combines the functions of the wire and the screwdriver in the remote signal limit number transmission test into one, the development cost is low, the staff is easy to learn, and it is necessary to remove the wires and short-circuit interspersed with each other. In the test procedure, the work efficiency is effectively improved. In the signal circuit with a voltage level of 220V DC strong current, the joint screw with the insulating cap and the screwdriver that can be retracted in the insulating sleeve reduce the potential safety hazard and are beneficial to Safe and stable operation of the power system.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Wherein, 1 insulating handle, 2 screws, 3 wires, 4 insulating sleeves, 5 first limit ring, 6 flat screwdriver, 7 second limit ring, 8 spring, 9 holes.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As can be seen from the embodiment shown in Fig. 1, it includes a screw 2 with an insulating handle 1, an insulating sleeve 4, a slotted screwdriver 6 located in the insulating sleeve 4, a wire 3 connecting the slotted screwdriver 6 and the screw 2;

Described flat screwdriver 6 is made up of insulating handle and metal cone head; Described insulating sleeve 4 upper and lower openings, the top of the insulating handle of described flat screwdriver 6 stretches out opening on insulating sleeve 4, and described flat screwdriver 6 The metal taper head of the screwdriver 6 faces the lower opening of the insulating sleeve 4; a first stop ring 5 is provided on the inner side of the upper part of the insulating sleeve 4, and its inner diameter is greater than the diameter of the insulating handle of the flat screwdriver 6; The outside of the insulating handle of the slotted screwdriver 6 is provided with a second spacer ring 7, and its outer diameter is greater than the inner diameter of the first spacer ring 5; the second spacer ring 7 is positioned at the first spacer ring 5 The bottom of the bottom; the spring 8 is sleeved on the metal cone head of the flat screwdriver 6; one end of the wire 3 is connected to the nut of the screw 2, and the other end passes through the hole 9 on the side wall of the insulating sleeve 4 It is connected with the metal cone head of the flat head screwdriver 6 .

The nut of the screw 2 is fixed with an insulating handle 1, which is manufactured with a tool-free concept, which is convenient for the staff to install or remove on the terminal block by hand; the lower part of the screw 2 has a metal thread, which can be screwed into the terminal block in the screw hole. One end of the wire 3 is firmly welded on the screw 2, and the other end is welded to the metal cone head of the slotted screwdriver 6 to form a conductive path. In order to ensure the safety of the staff and the DC system, an insulating sleeve 4 is installed outside the slotted screwdriver 6, and the slotted screwdriver 6 has a retractable function.

The working process of the present utility model is as follows:

When it is necessary to use a screwdriver for short-circuit work, screw the screw 2 into the common end electric screw hole of the terminal strip, press the insulating handle of the screwdriver 6, and compress the spring 8 in the insulating sleeve 4 , the flat screwdriver 6 protrudes 2cm from the insulating sleeve 4, and the metal cone head of the mobile flat screwdriver 6 is connected to the different signal terminals to be measured, which is convenient for the staff to work while avoiding the danger of contacts; when not in use, Loosen the insulating handle of the screwdriver 6, the spring 8 pushes the second limit ring 7 to the first limit ring 5, at this time the screwdriver 6 is fully retracted in the insulating sleeve 4, and the staff can arbitrarily Place it so that it will not cause accidental electric shock to the staff or grounding of the DC system. When using a flat screwdriver to carry out the removal work of the signal terminal outer circuit, the flat screwdriver 6 in the utility model can also be used without carrying other tools.

When the insulating handle of the slotted screwdriver 6 is not pressed, the metal cone head is completely inside the insulating sleeve 4; when the insulating handle of the slotted screwdriver 6 is pressed, the metal cone head The head stretches out of the insulating sleeve 4 lower openings.

The wire 3 is a multi-strand wire.

The utility model combines the functions of the wire and the screwdriver into one, improves the work efficiency, and can conveniently, effectively, simply and quickly complete the operations of shorting the signal loop and removing the outer loop and interspersing each other.

Claims (1)

1. one kind for testing the portable dam of remote signalling transmission test, it is characterized in that comprising screw (2), insulating sleeve (4) with insulated handle (1), be positioned at insulating sleeve (4) a word screwdriver (6), connect the wire (3) of a word screwdriver (6) and screw (2);

A described word screwdriver (6) is comprised of insulation handle and metal conehead; Described insulating sleeve (4) upper and lower opening, insulating sleeve (4) upper shed is stretched out on the top of the insulation handle of a described word screwdriver (6), and the metal conehead of a described word screwdriver (6) is over against insulating sleeve (4) under shed; Be provided with the first spacing ring (5) in described insulating sleeve (4) upper inner, its internal diameter is greater than the diameter of the insulation handle of a described word screwdriver (6); The insulation handle outside at a described word screwdriver (6) is provided with the second spacing ring (7), and its external diameter is greater than the internal diameter of described the first spacing ring (5); Described the second spacing ring (7) is positioned at the bottom of described the first spacing ring (5); Spring (8) is enclosed within on the metal conehead of a described word screwdriver (6); One end of described wire (3) is connected with the nut of screw (2), and the other end is connected with the metal conehead of a described word screwdriver (6) by the hole (9) be positioned on insulating sleeve (4) sidewall.

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