CN2303303Y

CN2303303Y - Locomotive test pencil

Info

Publication number: CN2303303Y
Application number: CN 97223262
Authority: CN
Inventors: 王继跃
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-30
Filing date: 1997-05-30
Publication date: 1999-01-06
Anticipated expiration: 2007-05-30

Abstract

The utility model relates to a test pencil for a motor vehicle, which is a test pencil type test lamp for a motor vehicle. The utility model is composed of a pencil head, a pencil body, and a pencil cap, wherein, the pencil head is arranged on one end of the pencil body, one end of each light-emitting diode of two light-emitting diodes with contrary polarities and different colors contact the pencil head, and the two light-emitting diodes are connected in parallel; the other end of each light-emitting diode of the two light-emitting diodes are connected with a resistor in series; the other end of the resistor is connected with a spring in series, and the other end of the spring is connected with a fish head clamp through a conducting wire after the other end of the spring penetrates through the pencil cap; the pencil cap is movably connected with the pencil body. The utility model has the advantages of simple structure, convenient operation, high durability, low cost, flexible operation, etc.

Description

The locomotive test pencil

The utility model belongs to electroprobe, particularly the locomotive test pencil.

On the dong feng 4 diesel locomotive at the back side in hyperbaric chamber, the ground connection examination lamp of two 110V, 8W is housed, be 1DD, 2DD, be called positive lamp, negative lamp, not only can check and the concrete ground connection of decision circuitry or the place of opening circuit with ground connection examination lamp, can also check and judge the ground connection of sharpening magnetic circuit and main circuit and the place of opening circuit, but be contained in the back side in hyperbaric chamber owing to two examination lamps, use very inconvenient, locomotive unloading particularly in service, if the fault place is under control stand, the examination lamp just can't use, moreover resembles some circuit such as stepper motor and break down and also can't use.Locomotive crew member and appliance maintenance personnel are the self testing lamps now, its method is to unload illuminating lamp, lamp holder on locomotive, draw two leads and connect fish head-clamp respectively from lamp holder, load onto bulb and carry, one end is clipped in the anode or the negative terminal of circuit when checking fault.The circuit that needs to check with other end contact speed comes the failure judgement place, and is more many than using the original examination lamp of locomotive to make things convenient for like this, but also has some problems.At first be to carry inconvenience, the bulb cracky, fracture of wire, and hold bulb in the hand when using, operate very dumb.

The purpose of this utility model is to address the above problem, and provides a kind of electroprobe formula locomotive simple in structure, easy to operate, durable in use, with low cost, flexible operation to try lamp.

The utility model is made up of nib, a body, the cap for brush, nib is fixedly mounted on a body one end, one end of the light emitting diode of opposite polarity two different colours that are connected in parallel touches mutually with nib, its other end is connected with a resistance, the other end of resistance is connected with spring, the other end of spring connects with the fish head-clamp after passing the cap for brush by lead, and the cap for brush connects with a body is movable.

Advantages such as that the utility model compared with prior art has is simple in structure, easy to operate, durable in use, with low cost, flexible operation.

Accompanying drawing is a structural representation of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in the figure, the utility model is made up of nib 1, a body 2, the cap for brush 7, nib 1 is fixedly mounted on an end of a body 2, (red, green) light emitting diode (3 of opposite polarity two different colours that are connected in parallel, 4) a end touches mutually with nib 1, and its other end is connected with a resistance 5, and the other end of resistance 5 is connected with spring 6, the other end of spring passes the cap for brush 7 backs by lead and connects with fish head-clamp 8, the cap for brush 7 and 2 movable connections an of body.When during use fish head-clamp 8 being clipped in the negative terminal of locomotive circuit, remove to touch relevant circuit with nib 1, if red light emitting diodes 3 bright explanation circuit or electrical equipment front end lead to, not working illustrates that then circuit or electrical equipment have the place of opening circuit at 1 contact leading portion of nib.When fish head-clamp 8 is clipped in the locomotive circuit anode, remove to touch relevant circuit with electroprobe, if green LED 4 bright explanation circuit or electrical equipment rear end lead to, not working illustrates that then circuit or electrical equipment have the place of opening circuit at electroprobe institute contact back segment.

Claims

1. locomotive test pencil, it is made up of nib, a body, the cap for brush, it is characterized in that nib is fixedly mounted on a body one end, one end of the light emitting diode of opposite polarity two different colours that are connected in parallel touches mutually with nib, its other end is connected with a resistance, the other end of resistance is connected with spring, and the other end of spring connects with the fish head-clamp after passing the cap for brush by lead, and the cap for brush connects with a body is movable.