Frog lifting tool

Abstract

The invention relates to a frog lifting tool applied to the field of railway construction devices. Subsidiary lifting beams are arranged at the lower sides of two main lifting beams of the frog lifting tool. Two hoisting assemblies are symmetrically arranged on sliding rods arranged inside each subsidiary lifting beam. Each hoisting assembly comprises a sliding sleeve. Each sliding sleeve is connected to two parallel connecting plates. A sliding portion is arranged at the lower end of each connecting plate. Each sliding portion is arranged in a longitudinal sliding groove in a sliding manner,wherein each longitudinal sliding groove is formed in a lower support frame. A clamping head is hinged to the lower side of each lower support frame. The clamping heads of the hoisting assemblies arearranged in a face-to-face manner, so that a clamping opening for clamping a frog is formed. A stroke shutter is further arranged between every two connecting plates. An adjustment threaded rod is arranged inside each subsidiary lifting beam in a manner that each adjustment threaded rod is parallel with the corresponding sliding rod. A nut is arranged on each adjustment threaded rod in an engagedmanner. Each nut is connected with the corresponding connecting plate. In the working process, when the main lifting beams are pulled up and laid down once, the stroke shutters act once, and thereforethe clamping heads can switch between the locked state and the released state; hoisting and laying-down of the frogs are completed automatically; and the frog lifting tool is applicable to railway construction.

Description

technical field [0001] The invention relates to a sling for lifting rails, in particular to a rail sling for high-speed rail construction. Background technique [0002] A frog is a device that enables a train wheel to pass from one rail to another, and consists of a fork core, wing rails and connecting parts. According to the plane form, there are two types of straight frogs and curved frogs; according to the structure type, there are two types of fixed frogs and movable frogs. There are two types of linear fixed frogs, namely cast frogs and rail combined frogs. Frogs generally include the upper track part and the base part connected to the lower part. The side of the track part has a local depression, and its single side section is roughly I-shaped. At present, the length of frogs in my country is about 14m, and it is difficult to hoist them on site. . [0003] In the Chinese patent database, a single rail spreader is disclosed, its application number: 200820034624.5; app...

AI Technical Summary

Problems solved by technology

[0004] Its shortcoming is that the upper connecting plate and the hook plate of the device are connected in a hinged manner, and its load-bearing strength is poor. In addition, its structure is not compact enough, and it cannot be used for hoisting frogs

Images