CN102001606A

CN102001606A - Insulating lifting device

Info

Publication number: CN102001606A
Application number: CN 201010564785
Authority: CN
Inventors: 周吉安; 杨德志; 杨云; 张宏军; 韩旭杉; 姚军; 杨万义; 王�锋; 焦德华; 屈传宁; 王勇杰; 徐击水; 张子蓬; 何光辉
Original assignee: WUHAN FENJIN POWER TECHNOLOGY Co Ltd; Gansu Electric Power Corp Ultra-high Voltage Transmission and Transformat
Current assignee: MAINTAINANCE Co OF GANSU ELECTRIC POWER Corp; WUHAN FENJIN POWER TECHNOLOGY Co Ltd; State Grid Corp of China SGCC
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2011-04-06

Abstract

An insulation lifting device relates to an insulation lifting device used for high-voltage electrical inspection and detection with a voltage not greater than 750kV. It consists of a base, a truss structure, and an insulating operating rod. Guardrails are set around the base, casters are installed at the bottom, and three base sleeves are welded on the surface of the base. Three sets of telescopic rods of the truss structure are inserted into the base sleeve and fixed with locking screws. The insulating operating rod It is fixed in the center of the truss structure through the bushing and the nut of the bushing; the telescopic rod of the truss structure adopts a sleeve telescopic structure, and the upper section of the telescopic rod and the lower section of the telescopic rod are positioned and connected by spring pins. The invention is easy to implement, movable and telescopic, greatly reduces the working intensity of operators, and prevents flashover accidents of adjacent high-voltage electrical equipment caused by unstable hand-held electroscopes and deflection of insulating rods.

Description

A kind of insulated lift device

Technical field

The invention belongs to the electroscopic device technical field, particularly a kind ofly be applied to the insulated lift device that high voltage testing that voltage is not more than 750KV detects usefulness.

Background technology

In the electric system, adopting earlier the voltage detector of corresponding voltage grade clearly to verify whether really no-voltage of power failure equipments, carry out other operations again, is to prevent charged attaching ground wire (splice grafting ground disconnecting link), miss one of major measure of the generation of bumping serious accidents such as electric equipment.Voltage detector generally is made up of electrical verification indicating device and electrical verification control lever at present, the electrical verification indicating device is mainly finished high-voltage electric device, and whether charged signal is indicated, the electrical verification control lever mainly plays in the operating process of carrying out high voltage testing, makes and forms effectively insulation isolation between high potential and human body and the earth.Current, the highest voltage level that domestic direct electricity-testing method is faced is 330KV, promptly the operations staff need hand 9 meters long insulating bars with the contact voltage detector near and contact the electrical verification target.But the operation operation along with northwest 750kV project of transmitting and converting electricity has increased a new higher voltage class again in China's voltage class sequence table, also be faced with many new challenges, and the electrical verification operation of 750KV equipment is exactly one of them.The clear distance over the ground of 750KV equipment is very high, the electrical verification part often reaches about 18 meters ground level, and traditional single drawing control lever can only be applicable to the electrical verification operation of the high-voltage electric device that the position is relatively low, and consider operations staff's ability to bear, the weight and the external diameter of control lever all are restricted, cause the final stretched length of control lever also to be restricted, therefore traditional drawing control lever can not satisfy the on-the-spot actual requirement of 750KV.

Summary of the invention

The objective of the invention is at the problems referred to above, a kind of safe and reliable, removable, the telescopic high voltage testing that is not more than 750KV that is applicable to that aims to provide detects the insulated lift device of usefulness.

The implementation of the object of the invention is: the insulated lift device is made up of base, truss structure, insulating bar, and guardrail is set around the base, bottom dress castor, three base sleeves of susceptor surface welding; Three groups of expansion links of truss structure insert in the base sleeve and utilize lock screw to fix, and insulating bar is fixed in the truss structure center by axle sleeve and clamp nut; The expansion link of truss structure adopts the sleeve stretching structure, and joint saves down with expansion link and is located by connecting by spring tongue on the expansion link; One spring tongue is set on every section telescopic bar, axis pin of the spring passes the expansion link tube wall of two joints up and down, make expansion link up and down the relative position between two joints fix, during the retraction expansion link, must press spring tongue earlier, and the dislocation of the knock hole on the 2-section pipe wall about making, the expansion link rotation that up and down two joints can independence and freedom, on the tube wall of every section telescopic bar the cemented in place rotary sleeve and the position rotating nut is housed, the triangle adapter sleeve is connected with every joint A-frame, guaranteed every section telescopic bar in stroke range telescopic moving until spacing.

Expansion link among the present invention and insulating bar adopt the insulating material of high-purity epoxy resin to make, and have guaranteed device single-piece insulativity and retractility.Truss structure is detachable the connection with base, makes things convenient for the staff to collect, transport, install.Castor is a cardan wheel, the band dual brake, not only movable base carries out the position adjustment easily, guarantees that the voltage detector measuring junction contacts with the effective of measured body, subsidiary dual brake braking has guaranteed that base can safety and stability support, and effectively guarantees the safety of whole electrical verification detecting operation under various ground condition condition.The invention process is easy, alleviates field operator's working strength, prevents because of hand-held voltage detector shakiness insulating bar beat and cause the accident of closing on the high voltage electric equipment flashover.

Description of drawings

Fig. 1 is the constructional drawing of base among the present invention;

Fig. 2 is the structural representation of expansion link among the present invention;

Fig. 3 is the scheme drawing of the embodiment of the invention;

Fig. 4 is the birds-eye view of the embodiment of the invention.

The specific embodiment

With reference to the accompanying drawings structure of the present invention and preferred embodiment are elaborated.

The present invention is made up of base, truss structure 1, insulating bar 2, and guardrail 3 is set around the base, bottom dress castor 4, three base sleeves 5 of susceptor surface welding; Three groups of expansion links 6 of truss structure 1 insert in the base sleeve 5 and utilize lock screw to fix, and insulating bar 2 is fixed in truss structure 1 center by axle sleeve 15 and clamp nut 14; The expansion link 6 of truss structure adopts the sleeve stretching structure, saves b on the expansion link under joint a and the expansion link and is located by connecting by spring tongue 7; One spring tongue 7 is set on every section telescopic bar, axis pin of the spring passes the expansion link tube wall of two joints up and down, make expansion link up and down the relative position between two joints fix, during the retraction expansion link, must press spring tongue 7 earlier, and the dislocation of the knock hole on the 2-section pipe wall about making, the expansion link rotation that two joints can independence and freedom about in the of 6, on the tube wall of every section telescopic bar cemented in place rotary sleeve 8 and position rotating nut 9 is housed, triangle adapter sleeve 10 is connected with every joint A-frame, guaranteed every section telescopic bar in stroke range telescopic moving until spacing.

Truss structure 1 top double-ply connect cross bar 11 midpoint by T type connecting bushing 12 connections to pipe link 13 1 ends, normal direction pipe link 13 other ends are compiled in truss structure 1 center, and by axle sleeve 15 with captive joint with insulating bar 2 with clamp nut 14.

Expansion link 6 and insulating bar 2 adopt the insulating material of high-purity epoxy resin to make, and have guaranteed device single-piece insulativity and retractility.Truss structure 1 is detachable the connection with base, makes things convenient for the staff to collect, transport, install.Castor 4 is a cardan wheel, the band dual brake, not only movable base carries out the position adjustment easily, guarantees that the voltage detector measuring junction contacts with the effective of measured body, subsidiary dual brake braking has guaranteed that base can safety and stability support, and effectively guarantees the safety of whole electrical verification detecting operation under various ground condition condition.

Preferred embodiment:

In the present embodiment, the bedframe size adopt 1000mm length * 1000mm wide * the 1000mm height, but the support of base safety and stability; Roller is equipped with in the base bottom, can move freely;

Truss structure is got 6 layers of A-frame, every layer of support height 1500mm, the whole expansion of truss structure can reach about 8 meters, truss structure 1 center is fixed in by axle sleeve 15 and sleeve nut 14 in insulating bar 2 bottoms, insulating bar 2 adopts single 12 meters telescopic control lever, and about 500g weight can be supported in the top.

Base is pushed into suitable below, electrical verification position, operating personal stands on the base and steadily exerts oneself, stretching insulated lift control lever 2 is to full extension, arrive the specified altitude assignment position by joint stretching truss structure 3 again, the insulation height of insulated lift device can be adjustable between 8 meters～20 meters, satisfies the requirement of the electrical verification operation that is not more than under the 750KV voltage fully.After the electrical verification operation is finished, press the spring tongue 7 on the expansion link 6, truss structure 1 is retracted to initial compressed state, in the same way insulated lift control lever 2 is being bounced back then, whole all withdrawals back equipment are not higher than 1600mm.

The technical parameter of the preferred embodiment of this insulated lift device is as follows:

1, serviceability temperature: 0C～40C

2, storage temperature :-10 ℃～50 ℃

3, relative humidity:＜85%

4, maximum height: 20mm

5, substructure height: 800mm

6, spider height: 1500mm

7, maximum weight: 80kg

8, base size: 1000mm * 1000mm * 1000mm

Claims

1. An insulating lifting device, characterized in that it consists of a base, a truss structure (1), and an insulating operating rod (2), guardrails (3) are arranged around the base, casters (4) are installed at the bottom, and three bases are welded on the surface The base sleeve (5); the three sets of telescopic rods (6) of the truss structure (1) are inserted into the base sleeve (5) and fixed with locking screws, and the insulating operating rod (2) passes through the shaft sleeve (15) and the fastening nut (14) is fixed on the center of the truss structure (1); the telescopic rod (6) of the truss structure adopts a sleeve telescopic structure, and the upper section of the telescopic rod and the lower section of the telescopic rod are positioned and connected by the spring pin (7); each telescopic rod (6 ) is provided with a spring pin (7), the spring pin shaft passes through the pipe wall of the upper and lower sections of the telescopic rod, and the pipe wall of each telescopic rod (6) is bonded with a positioning rotating sleeve (8) and a positioning rotating nut is installed (9), triangle connecting sleeve (10) are connected with every joint triangle bracket.

2. The insulating lifting device according to claim 1, the middle point of the connecting crossbar (11) on the top two layers of the truss structure (1) is connected to the normal connecting rod (13) through a T-shaped connecting bush (12). ) at one end, and the other end of the normal connecting rod (13) converges at the center of the truss structure (1), and is fixedly connected with the insulating operating rod (2) through the axle sleeve (15) and the fastening nut (14).

3. The insulating lifting device according to claim 1, wherein the telescopic rod (6) and the insulating operating rod (2) are made of insulating material of high-purity epoxy resin.

4. The insulating lifting device according to claim 1, wherein the truss structure (1) is detachably connected to the base.

5. The insulation lifting device according to claim 1, wherein said casters (4) are universal wheels with double brakes.