CN2224049Y

CN2224049Y - Steel-track stretching machine

Info

Publication number: CN2224049Y
Application number: CN 94246570
Authority: CN
Inventors: 庄赣生; 王子如
Original assignee: JINZHOU SCIENCE AND TECHONOLOGY INST RAILWAYS BUREAU OF SHENYANG
Current assignee: JINZHOU SCIENCE AND TECHONOLOGY INST RAILWAYS BUREAU OF SHENYANG
Priority date: 1994-12-08
Filing date: 1994-12-08
Publication date: 1996-04-10
Anticipated expiration: 2004-12-08

Abstract

The utility model relates to a handy and rapid steel track stretching machine which is composed of a hydraulic oil cylinder 4, an extension rod 5 and clamps, which are connected by moving joints and pins. The clamps are composed of collapsible clamp bodies, oblique iron 3 and lock iron 6. Tension force is applied to a steel track by the clamps driven by the oil cylinder which is directly driven by an electric and hydraulic pump unit. The utility model is suitable for the stress release work of a variety of steel tracks of continuously welded rail track as well as the track work of steel tracks. The utility model has the advantages of light weight, high reliability of clamping tracks, rapid assembly and disassembly and simple operation.

Description

The rail stretching-machine

The utility model relate to a kind of light, mounting or dismounting rapidly, the reliable rail stretching-machine of card rail.It is the main facility that the various rail stress of railway gapless track diffuse, and also is suitable for the rail-connecting job of various rail.

It always is the important process that assurance of railway works department is transported safely that the gapless track temperature stress is diffused.Adopt temperature to diffuse method in the past, fully by waiting for suitable temperature construction, destressing work is difficult in time finish according to the construction demand, now the power-assisted of promoting diffuse can not be subjected to being limited in of temperature and blocking time be lower than fastening-down temperature of rail in a big way in force to diffuse, improved work efficiency greatly, be beneficial to transportation and produce.Power-assisted is diffused needs special-purpose stretching-machine.Stretching-machine external at present, domestic production is all heavy unusually, and the mounting or dismounting trouble particularly adopt the cam chucking web of the rail very easily to skid, and stretching travel is less than normal, can not satisfy the requirement of blocking the construction of circuit destressing.

The purpose of this utility model provide a kind of light, mounting or dismounting are fast, the card rail is reliable, be particularly suitable for the stretching-machine that the railway rail power-assisted is diffused requirement.

The purpose of this utility model is achieved like this: complete machine is by hydraulic jack, and extension bar and anchor clamps are formed, and adopts separately-loaded.

Anchor clamps are made up of the up big and down small horseshoe type lock iron of collapsible clamp body, band tooth wedge and opening, and a dental lamina is respectively inlayed in the bottom in the clamp body.

Hydraulic jack is directly driven by electric hydraulic station, drives anchor clamps rail is applied pulling force.Hydraulic jack adopts movable joint to be connected with pin with extension bar and anchor clamps.

Fast assembling and disassembling during collapsible clamp body card rail; Band tooth wedge and dental lamina block rail head end face and lower jaw, are difficult for skidding; U-shaped lock iron pins clamp body, makes clamp body form firm integral body, draws rail reliable.Complete machine adopts separately-loaded: hydraulic jack adopts movable joint to be connected with pin with extension bar and anchor clamps, makes that complete machine is light, connection is flexible, simple to operate.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1: the utility model front view;

Fig. 2: the utility model side view;

Fig. 3: the utility model vertical view.

The utility model complete machine is by hydraulic jack 4, extension bar 5 and clamp assembly constitute, adopt movable joint to connect between them with pin, clamp assembly is that the up big and down small horseshoe type lock iron 6 of 5 °-16 ° band tooth wedge 3, opening is formed by collapsible clamp body 1 that is connected into removable pin 2 and gradient, a dental lamina 7 is respectively inlayed in the bottom in the clamp body 1, thereby oil cylinder 4 directly drives the drive anchor clamps by big flow electric pump station rail is applied pulling force, and maximum pull can reach 700KN, and the maximum functional stroke is 500mm;

When needing destressing, with extension bar 5 parallelizations of two two ends band pin-and-holes in the rail both sides, the one end connects with clamp body 1 usefulness pin respectively, the other end connects with pin with the piston rod end of two hydraulic jacks 4 respectively, the head of two hydraulic jacks 4 and another clamp body 1 usefulness pin join, and oil cylinder 4 are connected with oil pipe with electric hydraulic station just can directly drive again.

Oil cylinder 4, extension bar 5 and clamp assembly can block rail after connecting with movable joint and pin 8, during the card rail folding two clamp bodies 1 are opened, sandwiched respectively on the correct position of two one steel rail rail heads to be drawn, again along wedging wedge 3 between clamp body 1 and rail level, be inserted in u-shaped lock iron 6 from the rear, urgent wedge 3 is connected oil circuit with high-pressure oil pipe, starts hydraulic electric pump station, to the rod chamber fuel feeding of oil cylinder 4, draw rail thereby drive anchor clamps.

During dismounting, with the commutation of the reversal valve of pumping plant, promptly to the rodless cavity fuel feeding of oil cylinder 4.Must have a clamp body 1 rail that gets loose automatically this moment, extracts removable pin 8, takes off oil cylinder 4, extension bar 5, then, the lock iron 6 of an end of not getting loose that strikes with a hammer takes off lock iron 6, beats another clamp body 1 again, make wedge 3 rail that gets loose, take off clamp body 1, dismounting so far finishes.

The utility model adopts collapsible clamp body mounting or dismounting convenient, fast; Do not become when adopting horseshoe type lock iron to make anchor clamps work and can become flexible integral body, the card rail is reliable rapidly; Adopt big flow electric pump station, draw rail speed fast; Adopt packaging structure, make operation light easily.

Claims

1, a kind of rail stretching-machine, form by fluid compressing cylinder (4), extension bar (5) and clamp assembly, it is characterized in that complete machine adopts separately-loaded: oil cylinder (4), extension bar (5) and two sleeve clamp assemblies assemble two parallelizations in the rail both sides by following relative position relation when its duty, extension bar (5) the one end of two ends band pin-and-hole uses pin to connect with the clamp body (1) of clamp assembly respectively, the other end respectively with the piston rod end pin joint of two hydraulic jacks (4); Two hydraulic jacks (4) head connects with clamp body (1) pin of another clamp assembly; Oil cylinder (4) is connected with oil pipe with electric hydraulic station.

2, stretching-machine as claimed in claim 1, it is characterized in that clamp assembly is connected into folding clamp body (1) by removable pin (2), can constitute along lock iron (6) wedge of wedging between clamp body (1) and rail level (3) and up big and down small opening and that can lock firm clamp body (1) when clamping rail head at clamp body (1).

3, clamp body as claimed in claim 1 or 2 is characterized in that, band tooth wedge (3) gradient is 5 °-16 °; Clamp body (1) is respectively inlayed a dental lamina (7) that can block firm rail head lower jaw with the interior bottom of rail jaw mating surface.