CN205415450U

CN205415450U - Laborsaving spanner of two resisting moment arms

Info

Publication number: CN205415450U
Application number: CN201620232992.5U
Authority: CN
Inventors: 王培生
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-24
Filing date: 2016-03-24
Publication date: 2016-08-03
Anticipated expiration: 2026-03-24

Abstract

The utility model relates to a laborsaving spanner of two resisting moment arms, its structure is provided with the radial overhanging landing leg in two edges, two on planetary gear reducer's lateral wall the central line that the landing leg used planetary gear reducer constitutes two resisting moment arms as the symmetric distribution, planetary gear reducer's top is provided with the square head input shaft planetary gear reducer's bottom is provided with the square head output shaft that stretches out downwards, planetary gear reducer's below is provided with the sleeve telescopic top surface central point put open have with the square hole that planetary gear reducer's square head output shaft cup jointed mutually telescopic bottom surface central point puts and opens the interior hexagonal hole who has joint bolt or nut. The utility model discloses can by second grade or tertiary planetary gear reducer amplification and input moment of torsion, rest the head on by the concrete and bear the reaction force who unscrews / screw up, therefore can easily twist the dead serious switch iron tie plate anchor bolt of rust under the cooperation of two resisting moment arms.

Description

Dual anti-moment arm labour-saving spanner

Technical field

This utility model relates to a kind of railway maintenance action tool, a kind of dual anti-moment arm labour-saving spanner that concrete switch tie track switch iron chair anchor bolt carries out degree of tightness operation.

Background technology

Concrete switch tie track switch is the most commonly used on the arterial railway transportation route of the whole nation, and particularly on the various concrete switch tie track switch or solid concrete roabed track switch of raising speed railway, high ferro circuit etc., its fastener is all the king-bolt using M30, is anchored at by iron chair on concrete switch tie.All it is laid under natural environment due to railroad track, and use in natural environment, thus wind-engaging frost and snow rain and dust pollution corrode, each bolt (M30, M27) on switch tie equipment maintenance repair loosen, tighten during, it is required for spending the biggest strength just can turn, operate the most laborious, it is to need two people collaborative firmly use T-wrench just can unscrew a bolt under normal circumstances, for indivedual the most serious bolts that become rusty, on T-wrench, also to install prolongation handle additional, just can be unscrewed a bolt by three people are collaborative, take a lot of work laborious.The moment of torsion that use T-wrench loosers a bolt is up to 1500 3000N M, it some times happens that the situation that bolt is twisted into two parts.This is because T-wrench can occur the situation crooked with bolt axial line when many people turn, this will make screw rod bear the combined stress reversing and bending, and when this combined stress is more than the strength of materials of bolt, the situation of bolt fracture will occur.

For the situation that the scene dead bolt of rust is more, field maintenance operator propose many Improving ways to solve the problem that operation is laborious and twists into two parts bolt.As added reinforcement on T-wrench, use and add thick steel pipe and install tommy bar etc. at its two ends additional, but these modes still can not solve rapid operation and the problem preventing from twisting into two parts bolt.Because in unscrewing operating process, as long as the center of T-wrench can not keep concentric with bolt, just yet suffer from twisting into two parts the possibility of bolt.

Also having producer to transform internal combustion engine wrench, but the maximum loosening torque of improved internal combustion engine moving spanner can only achieve 600 N M, thus anchor bolt serious to corrosion during being not particularly suited for railway maintenance unscrew operation.

Many is also had to plant labour-saving spanner in the market, its output moment of torsion is up to 3,000 10000 N M, but owing to only one of which general on this kind of spanner is as the supporting structure of drag arm, thus the bolt being used on detaching tyre, and it is not suitable for turning the king-bolt on railway switch. more.

Also have a kind of electric railway spanner on market, control moment of torsion by electronic speed regulation.But this electric wrench become rusty the most serious bolt upper to concrete switch tie track switch is still twisted motionless, and this electric wrench in use also needs to configure mobile power station, it is clear that be the special requirement that can not meet rail track Contraction in Site.

Utility model content

The purpose of this utility model is just to provide a kind of dual anti-moment arm labour-saving spanner, to solve the problem that the degree of tightness operation of current concrete switch tie track switch iron chair anchor bolt lacks suitable labour-saving operation instrument.

This utility model is achieved in that a kind of dual anti-moment arm labour-saving spanner, is provided with two supporting legs the most overhanging on the sidewall of planetary reducer, and two described supporting legs are symmetrical with the centrage of planetary reducer, constitute dual anti-moment arm；The top of described planetary reducer is provided with square toes power shaft, is provided with the square toes output shaft stretched out downwards in the bottom of described planetary reducer；The lower section of described planetary reducer is provided with sleeve, have, in the end face center of described sleeve, the square hole that the square toes output shaft with described planetary reducer socket-connects, have the interior hexagonal hole of card connecting bolt or nut in the bottom center position of described sleeve.

nullThis utility model is to take the suitable sleeve of caliber size to be socketed on the anchor bolt on concrete switch tie track switch iron chair，To be inserted in the square hole of sleeve end face by under the square toes output shaft below planetary reducer the most again，Two supporting legs on planetary reducer straddle the both sides of concrete switch tie，It is socketed on the square toes power shaft of planetary reducer end face with torque wrench，Driving torque spanner continuously，The square toes output shaft of planetary reducer can drive sleeve rotating，Two supporting legs then act against the side of concrete switch tie，Form symmetrical dual anti-moment arm，Good fulcrum and retroaction force is provided for unscrewing or tighting a bolt，So that the square toes output shaft of planetary reducer is exported the moment of torsion of 1500 3800N M，And by sleeve anchor bolt unscrewed or tighten，Thus reach fast power-saving and dismantle/install the purpose of concrete switch tie track switch iron chair anchor bolt.

Owing to the supporting leg on planetary reducer in operation is in the both sides of concrete switch tie, form dual anti-moment arm, therefore, ensure that the centrage of this labour-saving spanner can be basically identical with anchor bolt axial line or parallel, the labour-saving spanner crooked situation relative to bolt axial line will not occur, anchorage screw will not be made to bear reverse and the combined stress of bending, thus also avoid the generation of anchor bolt crack conditions.

This utility model simple structure, lightweight, easy to carry, one people is the most operable, and stable operation is reliable, under the cooperation of dual anti-moment arm, input torque is amplified by two grades or three-stage planet gear reducer, born, by concrete pillow, the counteracting force unscrewed/tighten, thus can easily turn the track switch iron chair anchor bolt that rust is the most serious, reach laborsaving saving of labor, quick purpose easily.

This utility model may be made as the electric wrench of dual anti-moment arm.

Accompanying drawing explanation

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

Detailed description of the invention

As it is shown in figure 1, be provided with two supporting legs 2 the most overhanging on the sidewall of planetary reducer 1, two supporting legs 2 are symmetrical with the centrage of planetary reducer 1, constitute dual anti-moment arm.The lower end of two supporting legs 2 is sagging joint end, in order to be preferably fitted in the both sides of concrete switch tie.The top of planetary reducer 1 is provided with square toes power shaft 4, is provided with the square toes output shaft 5 stretched out downwards in the bottom of planetary reducer 1.The speed reducing ratio of planetary reducer 3 can be chosen to be 1 68, and its max. output torque is 3800 N M, can meet the degree of tightness operation of general anchor bolt.

The lower section of planetary reducer 1 is provided with sleeve 3, has, in the end face center of sleeve 3, the square hole that the square toes output shaft 5 with planetary reducer socket-connects, have the interior hexagonal hole of card connecting bolt or nut in the bottom center position of sleeve 3.

Size according to screw bolt and nut is different, and sleeve 6 can be made into a series of the multiple railway Commonly Used Size such as M30, M27 and M24, to meet the routine work needs of railway maintenance maintenance.

The operational approach using this utility model to dismantle anchor bolt is:

1, sleeve 6 is arranged on the bolt head of anchor bolt.

2, the square toes output shaft 5 of this labour-saving spanner is inserted in the top square hole of sleeve 6.

3, the square opening on torque wrench is socketed on the square toes power shaft 4 of planetary reducer 3, according to counterclockwise turning torque wrench, can reverse trippingly at the beginning, treat that the dual anti-moment arm on this labour-saving spanner holds out against two rear flank at concrete switch tie, the most firmly turn torque wrench, during until anchor bolt loosens 1/3 1/2 circle, this labour-saving spanner can be unloaded.

4, use common T-wrench instead, the anchoring screw unscrewed is backed out.

Above operation is both needed to people's operation and can complete.During whole group of track switch anchor bolt of railway does oiling maintenance, it is possible to two people's line productiones, a people unscrews anchor bolt with this labour-saving spanner, and bolt is back-outed by another people with common T-wrench.

Claims

1. a dual anti-moment arm labour-saving spanner, is characterized in that, is provided with two supporting legs the most overhanging on the sidewall of planetary reducer, and two described supporting legs are symmetrical with the centrage of planetary reducer, constitute dual anti-moment arm；The top of described planetary reducer is provided with square toes power shaft, is provided with the square toes output shaft stretched out downwards in the bottom of described planetary reducer；The lower section of described planetary reducer is provided with sleeve, have, in the end face center of described sleeve, the square hole that the square toes output shaft with described planetary reducer socket-connects, have the interior hexagonal hole of card connecting bolt or nut in the bottom center position of described sleeve.

Dual anti-moment arm labour-saving spanner the most according to claim 1, is characterized in that, the lower end of two described supporting legs is sagging joint end.