CN102508040B

CN102508040B - Special grounded resistor detector

Info

Publication number: CN102508040B
Application number: CN201110370508.7A
Authority: CN
Inventors: 赵朝胜; 王学良; 何兵; 姜云宽; 赵琨; 于田野
Original assignee: Hubei lightning protection center
Current assignee: Hubei lightning protection center
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2014-05-14
Anticipated expiration: 2031-11-21
Also published as: CN102508040A

Abstract

The invention discloses a grounded resistor detector. The grounded resistor detector comprises a hollow main body sleeve, wherein a safety sheath is arranged at the top end of the main body sleeve; a high-speed small direction current motor is arranged inside the main body sleeve; the high-speed small direction current motor is provided with a motor shaft; the special grounded resistor detector also comprises a motor pressure spring, a microswitch pressure spring, a CMOS (complementary metal oxide semiconductor) time-based integrated circuit and a battery which are positioned at the tail end of the main body sleeve; the motor pressure spring and the microswitch pressure spring are positioned between the high-speed small direction current motor and the CMOS time-based integrated circuit; a microswitch is arranged on the outer part of the CMOS time-based integrated circuit; and the microswitch pressure spring contacts the microswitch. The grounded resistor detector is low in connection resistance, automatic in test, high in efficiency and effective, is applicable to measurement of conductor resistances of the grounded resistor and a low resistor of various devices in power, post and telecommunication, railway, communication, mine and other departments and also can be applicable to measurement of soil resistivity and ground voltage.

Description

Special grounded resistor detector

Technical field

The present invention relates to a kind of detector.

Background technology

Stake resistance detector is the Common Instrument of checking measurements stake resistance, also be electrical safety inspection and the indispensable instrument of earth work final acceptance of construction, can be for measuring the stake resistance of various devices and the conductor resistance value of measuring low resistance, because its measuring accuracy is high, speed is fast, easy to use, be specially adapted to require to use on high laboratory and automatic inspection line, be therefore widely used in the grounding resistance measurement of electric power, telecommunications, meteorology, oil field, building and industrial electrical installation.But the contact resistance of stake resistance detector is bigger than normal in prior art, use inconvenience.

Summary of the invention

The invention discloses a kind of stake resistance detector, its contact resistance is little, and test automatically, efficiently and effectively.

Stake resistance detector of the present invention comprises the main casing body of hollow, and main casing body top has safety shield, and the inside of main casing body has high-speed small-size direct current generator;

High-speed small-size direct current generator has motor shaft, motor sheath spring be positioned at the front end of high-speed small-size direct current generator and by motor shaft around, the pivot of motor shaft exposes outside motor sheath spring;

Special grounded resistor detector also comprises the motor pressure spring, microswitch stage clip, CMOS time-base integrated circuit and the battery that are positioned at main casing body tail end; Motor pressure spring and microswitch stage clip are between high-speed small-size direct current generator and CMOS time-base integrated circuit;

CMOS time-base integrated circuit outside has microswitch, and microswitch stage clip contacts with microswitch;

Motor pressure spring is around microswitch stage clip and microswitch; Motor pressure spring contacts with the package casing of motor shaft tail end and CMOS time-base integrated circuit.

Accompanying drawing explanation

Fig. 1 is the structural representation of Special grounded resistor detector of the present invention.

Fig. 2 is the circuit diagram of the CMOS time-base integrated circuit of Special grounded resistor detector of the present invention.

Embodiment

In order to make the clearer understanding of those skilled in the art technical scheme of the present invention, below in conjunction with accompanying drawing, its embodiment is described.

As shown in Figure 1, Special grounded resistor detector comprises the main casing body 8 of hollow, and main casing body 8 tops have safety shield 1, and the inside of main casing body 8 has high-speed small-size direct current generator 3.

High-speed small-size direct current generator 3 has motor shaft 31, and motor shaft 31 is made for glass hard steel, and motor shaft had not only been used as drill bit but also as bonding conductor.Direct current generator 3 also comprises tail armature and associated tracks (not shown).

Motor sheath spring 2 be positioned at the front end of high-speed small-size direct current generator 3 and by motor shaft 31 around, the pivot of motor shaft 31 exposes outside motor sheath spring 2.

Special grounded resistor detector also comprises the motor pressure spring 4, microswitch stage clip 5, CMOS time-base integrated circuit 6 and the battery 7 that are positioned at main casing body 8 tail ends.Fig. 2 shows the circuit diagram of the CMOS time-base integrated circuit 6 of the present invention's employing.

Motor pressure spring 4 and microswitch stage clip 5 are between high-speed small-size direct current generator 3 and CMOS time-base integrated circuit 6.

CMOS time-base integrated circuit 6 outsides have microswitch, and microswitch stage clip 5 contacts with microswitch.

Motor pressure spring 4 is around microswitch stage clip 5 and microswitch.Motor pressure spring 4 contacts with the package casing of motor shaft 31 tail ends and CMOS time-base integrated circuit 6.

Stake resistance detector of the present invention in use, first safety shield 1 is pressed to the interior contraction of main casing body 8, then, the pivot contact measurement point of motor shaft 31, high-speed small-size direct current generator 3 starts inwardly to shrink together with motor sheath spring 2, and compress microswitch stage clip 5, then, microswitch touches wall percussion microswitch stage clip 5, when the closed triggering of microswitch CMOS, base timing circuit 6 is worked, wherein cmos fet pipe conducting, drive direct current generator 3 High Rotation Speeds, the pivot of approximately 0.6 second motor shaft 31 pierces through rapidly measurement point surface insulation layer, make it to be effectively electrically connected with measurement point.

Special grounded resistor detector of the present invention is measurement of Grounding Resistance matching special equipment, in the time of measurement of Grounding Resistance, exert oneself a little, detector can either pierce through dirt, rusty stain, paint of tested measuring point aspect etc. automatically rapidly, makes it the electrical connection of remaining valid with stake resistance detector.Meanwhile, the physical damage that connects measuring point minimizes, and naked eyes almost be can't see the vestige detecting.Replace traditional method with this detector, make tested measuring point and detector resistor electrical connection become automatically, efficient, effectively.Stake resistance and low-resistance conductor resistance of various devices are measured by the departments such as electric power, post and telecommunications, railway, communication, mine that are applicable to, and also can be used for measuring soil resistivity and ground voltage.

Claims

1. a Special grounded resistor detector, comprises and it is characterized in that the main casing body of hollow,

Described main casing body top has safety shield, and the inside of described main casing body has high-speed small-size direct current generator;

Described high-speed small-size direct current generator has motor shaft, motor sheath spring be positioned at the front end of described high-speed small-size direct current generator and by described motor shaft around, the pivot of described motor shaft exposes outside described motor sheath spring;

Described Special grounded resistor detector also comprises the motor pressure spring, microswitch stage clip, CMOS time-base integrated circuit and the battery that are positioned at described main casing body tail end;

Described motor pressure spring and described microswitch stage clip are between described high-speed small-size direct current generator and described CMOS time-base integrated circuit;

Described CMOS time-base integrated circuit outside has microswitch, and described microswitch stage clip contacts with described microswitch;

Described motor pressure spring is around described microswitch stage clip and described microswitch; Described motor pressure spring contacts with the tail end of described motor shaft and the package casing of described CMOS time-base integrated circuit;

Described Special grounded resistor detector in use, first safety shield is pressed in main casing body shrinks, then, the pivot contact measurement point of motor shaft, high-speed small-size direct current generator starts inside contraction together with motor sheath spring, and compression mini switch stage clip, then, microswitch touches wall percussion microswitch stage clip, the closed CMOS of triggering of microswitch time-base integrated circuit is worked, wherein cmos fet pipe conducting, drive high-speed small-size direct current generator High Rotation Speed, the pivot of approximately 0.6 second motor shaft pierces through rapidly measurement point surface insulation layer, make it to be effectively electrically connected with measurement point.