CN102508040A

CN102508040A - Special grounded resistor detector

Info

Publication number: CN102508040A
Application number: CN2011103705087A
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: 2012-06-20
Anticipated expiration: 2031-11-21
Also published as: CN102508040B

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

The special-purpose detector of stake resistance

Technical field

The present invention relates to a kind of detector.

Background technology

The 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 used to measure the stake resistance of various devices and measure low-resistance conductor resistance value, because its measuring accuracy is high; Speed is fast; Easy to use, be specially adapted to use on demanding laboratory and the automatic inspection line, therefore be widely used in the grounding resistance measurement of electric power, telecommunications, meteorology, oil field, building and industrial electrical installation.But the connection resistance of stake resistance detector is bigger than normal in the prior art, uses inconvenience.

Summary of the invention

The invention discloses a kind of stake resistance detector, it is little that it connects resistance, and test automatically, efficiently and effectively.

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

The high-speed small-size direct current generator has motor shaft, and the motor sheath spring is positioned at the front end of high-speed small-size direct current generator and motor shaft is centered on, and the pivot of motor shaft exposes outside the motor sheath spring;

The special-purpose detector of stake resistance also comprises motor pressure spring, microswitch stage clip, CMOS time-base integrated circuit and the battery that is positioned at the 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 the microswitch stage clip contacts with microswitch;

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

Description of drawings

Fig. 1 is the structural representation of the special-purpose detector of stake resistance of the present invention.

Fig. 2 is the circuit diagram of the CMOS time-base integrated circuit of the special-purpose detector of stake resistance of the present invention.

Embodiment

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

As shown in Figure 1, the special-purpose detector of stake resistance 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 processed 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 is positioned at the front end of high-speed small-size direct current generator 3 and motor shaft 31 is centered on, and the pivot of motor shaft 31 exposes outside motor sheath spring 2.

The special-purpose detector of stake resistance also comprises motor pressure spring 4, microswitch stage clip 5, CMOS time-base integrated circuit 6 and the battery 7 that is 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, safety shield 1 at first pressurized shrinks in main casing body 8, then; The pivot contact measurement point of motor shaft 31, high-speed small-size direct current generator 3 inwardly shrinks together with 2 beginnings of motor sheath spring, and compression microswitch stage clip 5; Then, microswitch touches wall percussion microswitch stage clip 5, base timing circuit 6 work during the closed triggering of microswitch CMOS; Wherein cmos fet pipe conducting; Drive direct current generator 3 high speed rotating, the pivot of about 0.6 second motor shaft 31 pierces through the measurement point surface insulation layer rapidly, makes it effectively to be electrically connected with measurement point.

The special-purpose detector of stake resistance of the present invention is the measurement of Grounding Resistance matching special equipment; When measurement of Grounding Resistance; Exert oneself a little, detector can either pierce through dirt, rusty stain, paint of seized measuring point aspect etc. automatically apace, makes it to be electrically connected with the stake resistance detector is remained valid.Simultaneously, the physical damage that connects measuring point minimizes, and naked eyes almost can't see the vestige that detected.Replace traditional method with this detector, make seized measuring point and detector resistor be electrically connected and become automatic, efficient, effective.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, also can be used for measured soil resistivity and ground voltage.

Claims

1. stake resistance detector comprises it is characterized in that the main casing body of hollow,

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

Said high-speed small-size direct current generator has motor shaft, and the motor sheath spring is positioned at the front end of said high-speed small-size direct current generator and said motor shaft is centered on, and the pivot of said motor shaft exposes outside said motor sheath spring;

The special-purpose detector of said stake resistance also comprises motor pressure spring, microswitch stage clip, CMOS time-base integrated circuit and the battery that is positioned at said main casing body tail end;

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

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

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