CN103669229A

CN103669229A - Device for preventing arch frame from rolling over in dragging process

Info

Publication number: CN103669229A
Application number: CN201410002753.6A
Authority: CN
Inventors: 李正元; 彭思甜; 范波; 隋瑞凌; 贺德林; 谢赛军; 郑文超; 张部伟; 段君良; 蔡文胜; 符望春; 方振华; 陈海军
Original assignee: China Railway 25th Bureau Group Co Ltd; Second Engineering Co Ltd of China Railway 25th Bureau Group Co Ltd
Current assignee: China Railway Siyuan Survey and Design Group Co Ltd; China Railway 25th Bureau Group Co Ltd; Second Engineering Co Ltd of China Railway 25th Bureau Group Co Ltd
Priority date: 2014-01-04
Filing date: 2014-01-04
Publication date: 2014-03-26
Anticipated expiration: 2034-01-04
Also published as: CN103669229B

Abstract

The invention discloses a device for preventing an arch frame from rolling over in a dragging process. The bottoms of support legs of a bracket for supporting the arch frame are fixedly arranged on I-shaped steel, wherein the bottom of the I-shaped steel is supported by three-dimensional jacks which are arranged on workbenches of traveling trolleys moving in a rail above a dragging runway; light targets are arranged at corresponding positions of eight end parts of front and rear ends of arc ribs respectively; a total-station instrument is used for measuring coordinates of the eight end parts of the front and rear ends of the arch ribs. According to the device, the coordinates of the end parts of the arch ribs can be readjusted to be consistent to avoid the inclination of an arch bridge and the bracket by driving the I-shaped steel supported bracket and the arch ribs to move through the three-dimensional jacks or strengthening the strength of the bracket when longitudinal coordinates or perpendicular coordinates, measured by the total-station instrument, of the corresponding positions of the front and rear end parts of the arch ribs are inconsistent due to the fact of inconsistent movement distances of the two sides of the arch ribs or excessive deformation of a single side of the bracket, so that the arch bridge and the bracket are prevented from being inclined, accordingly, the arch bridge and the bracket are prevented from being dragged in an inclined state, and rollover caused by the dragging in the inclined state is prevented.

Description

A kind of device that prevents that bow member from turning on one's side in dilatory process

Technical field

The present invention relates to the erection technique of steel pipe arch bridge bow member, particularly a kind of device that prevents that bow member from turning on one's side in dilatory process.

Background technology

When construct in field, long-span steel pipe arch bridge spanning existing railway junction, required and railway operation condition restriction by railway electrification safety regulation, cannot move into large-scale hoisting machinery equipment.Be so limited, when construction steel pipe arch bridge, we have adopted and have built dilatory runway, in dilatory runway end erection bracket, bow member lifting are fixed on support, then the arch rib of end lifting are carried to it by support along dilatory runway and move method in place.Yet this kind of method brought again new problem, support and arch rib that it moves along dilatory runway, overall weight is very big, once there is deflection in moving process, will have the possibility of rollover, may therefore cause construction accident.Therefore, find that a kind of can to prevent that arch rib from the device of rollover occurring in dilatory moving process very necessary.

Summary of the invention

The present invention is intended to provide a kind of structure that can prevent bow member generation rollover in dilatory process, to guarantee the safety of bow member hauling construction.

The device that prevents that bow member from turning on one's side in dilatory process of the present invention, the support that comprises scaffold, support arranges respectively four supporting legs in the position of two side launching noses, supporting leg divides two groups of front and back, be individually fixed on former and later two i iron of bottom, two ends, i iron bottom respectively arrange a three-dimensional jack, by three-dimensional jack, from two ends, i iron are supported, can drive i iron two ends respectively longitudinally, laterally and vertical direction move; Four three-dimensional jack are all placed on the workbench of walking dolly, and walking dolly is placed on the track of dilatory runway top; The described device that prevents that bow member from turning on one's side in dilatory process also comprises for measuring the total powerstation of Ba Ge end, arch rib front and back end coordinate, is respectively arranged with the light target that coordinates total station survey to use in corresponding position, Ba Ge end, arch rib front and back end.

The device that prevents that bow member from turning on one's side in dilatory process of the present invention, after four legs of frame bottom connect by i iron between two, then is supported and is placed on four walking dollies by four three-dimensional jack.When arch rib causes total station survey to the along slope coordinate of relevant position, end before and after arch rib or vertical coordinate when inconsistent because both sides displacement is inconsistent, can drive each i iron to carry support and arch rib moves by three-dimensional jack, be adjusted to consistent; Avoid crooked support to be continued to be drawn and move ahead and caused bow member and support to be turned on one's side.When arch rib causes total station survey inconsistent to the vertical coordinate of relevant position, end before and after arch rib because the one-sided deflection of support is excessive, can increase the intensity of support, the deflection of support is reduced, thereby make the vertical coordinate in arch rib end consistent, avoid arch bridge and riding, thereby avoid bow member and support to tow in heeling condition, the rollover that prevents so cause.

Bow member moving track bottom can arrange reinforcement structure, described reinforcement structure comprises upper and lower two two parallel steel plates, between two parallel steel plates side by side near a plurality of i iron are installed, the upper and lower surface of i iron connects firmly respectively at two parallel steel plates, and the outer rim of two parallel steel plates connects by bolt screw rod again; Bow member moving track is positioned at the top of upper steel plate, comprises the limit that stops of the smooth guide pass in middle part and guide pass both sides.In the outside that stops limit, deep floor can be set.By above-mentioned reinforcement structure is set, can significantly promote the support strength of nose girder to running gear, three-dimensional jack, support and the arch rib of its top, the support post that reduces nose girder and nose girder bottom supports the deflection that they produce, thereby reduce, caused the vertical coordinate in arch rib end inconsistent because of nose girder and column distortion, also get final product the probability of the vertical inclination of less generation, thereby further prevent the rollover of arch rib and support.

Accompanying drawing explanation

Fig. 1 is the installment state schematic diagram that prevents the device that bow member is turned on one's side in dilatory process of the present invention;

The lateral view of Fig. 2 Fig. 1;

Fig. 3 is the partial enlarged drawing of Fig. 1.　

The specific embodiment

A kind of device that prevents that bow member from turning on one's side in dilatory process, as Fig. 1-3, the support 1 that comprises scaffold, support arranges respectively four supporting legs 2 in the position of two side launching noses, supporting leg divides two groups of front and back, is individually fixed on former and later two i iron 3 of bottom, and two ends, i iron bottom respectively arrange a three-dimensional jack 4, by three-dimensional jack, from two ends, i iron is supported, can drive i iron two ends respectively longitudinally, laterally and vertical direction move; Four three-dimensional jack are all placed on the workbench 6 of walking dolly 5, and walking dolly is placed on the track 8 of dilatory runway 7 tops; The described device that prevents that bow member from turning on one's side in dilatory process also comprises for measuring the total powerstation of Ba Ge end, arch rib front and back end coordinate, is respectively arranged with the light target that coordinates total station survey to use in corresponding position, Ba Ge end, arch rib front and back end.

Bow member moving track bottom can arrange reinforcement structure, described reinforcement structure comprises upper and lower two two parallel steel plates, between two parallel steel plates side by side near a plurality of i iron are installed, the upper and lower surface of i iron connects firmly respectively at two parallel steel plates, and the outer rim of two parallel steel plates connects by bolt screw rod again; Bow member moving track is positioned at the top of upper steel plate, comprises the limit that stops of the smooth guide pass in middle part and guide pass both sides.

Claims

1. a device that prevents that bow member from turning on one's side in dilatory process, the support that comprises scaffold, support arranges respectively four supporting legs in the position of two side launching noses, it is characterized in that: supporting leg divides two groups of front and back, be individually fixed on former and later two i iron of bottom, two ends, i iron bottom respectively arrange a three-dimensional jack, by three-dimensional jack, from two ends, i iron are supported, can drive i iron two ends respectively longitudinally, laterally and vertical direction move; Four three-dimensional jack are all placed on the workbench of walking dolly, and walking dolly is placed on the track of dilatory runway top; The described device that prevents that bow member from turning on one's side in dilatory process also comprises for measuring the total powerstation of Ba Ge end, arch rib front and back end coordinate, is respectively arranged with the light target that coordinates total station survey to use in corresponding position, Ba Ge end, arch rib front and back end.

2. the device that prevents that bow member from turning on one's side in dilatory process according to claim 1, it is characterized in that: bow member moving track bottom arranges reinforcement structure, described reinforcement structure comprises upper and lower two two parallel steel plates, between two parallel steel plates side by side near a plurality of i iron are installed, the upper and lower surface of i iron connects firmly respectively at two parallel steel plates, and the outer rim of two parallel steel plates connects by bolt screw rod again.

3. the device that prevents that bow member from turning on one's side in dilatory process according to claim 2, is characterized in that: bow member moving track is positioned at the top of upper steel plate, comprises the limit that stops of guide pass that middle part is smooth and guide pass both sides.