CN110962876A

CN110962876A - A new method for boundary measurement of railway I-beam towers

Info

Publication number: CN110962876A
Application number: CN201811158772.2A
Authority: CN
Inventors: 林凤涛; 史振帅; 李志和
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2020-04-07

Abstract

The invention discloses a new method for measuring the limit of an I-beam pole tower. sensor composition. The shell (4), the line laser sensor (5) and the angle sensor (6) form a laser range finder. (1) The trolley on the rail can automatically walk on the rail. The laser rangefinder obtains the measurement results, stores the results in the interior, and uploads the information to the processor through Bluetooth wireless communication, and then performs corresponding follow-up processing. The invention uses the line laser ranging sensor to determine the limit of the I-beam tower in the railway, and wirelessly transmits the obtained data to the computer data processing system to determine whether the limit of the tower exceeds the dangerous range. The method is simple in operation and high in accuracy, and eliminates the inconvenience of operation and low accuracy of the current manual tape measure for limit measurement.

Description

Novel limit measurement method for railway I-shaped steel pole tower

Technical Field

The invention relates to a novel limit measurement method of a railway I-shaped steel pole tower, namely an I-shaped steel wire laser ranging method.

Background

Delimitation refers to the line of dimension of the contour that is prescribed for the rolling stock and the buildings and equipment adjacent to the track that must not be exceeded in order to ensure the safety of the rolling stock running on the railway track, preventing the rolling stock from hitting the buildings and equipment adjacent to the track.

At present, most building boundary measuring methods are manual measuring, and main measuring tools are a platform limit measuring scale and a digital display type measuring instrument. The method has the disadvantages that a measurer needs to go down to operate, a plurality of persons need to go down to measure the station track at the same time, the measurement needs to be completed within the time of the operation of the railway maintenance skylight, and the limited operation time of the maintenance skylight needs to be reported in advance for one week, so that the huge workload of the operator for completing the measurement of the building clearance along the railway on time is hardly met. Building limit data needs to be updated in time, and if the building limit data cannot be updated regularly, great potential safety hazards are caused to the driving transportation safety. The existing measuring mode is troublesome and labor-consuming, the working efficiency is lower, and the error is large.

In order to solve the problems in the measuring process, a set of novel H-shaped steel pole tower clearance measuring method is researched, the method can enable personnel and equipment to finish measuring operation without going down, and the method considers the difference between an actual abrasion track and a theoretical track to be more accurate and can be applied to practice.

Disclosure of Invention

In order to overcome the defects of the prior art and meet the requirements of accurate, practical and easy-to-use detection, the invention provides a novel method for measuring the clearance of an I-shaped steel pole tower. Through using laser range finder transmission laser to carry out the clearance measurement to the building along the line of track, equipment testing personnel can remotely control the small rail car that traveles on the track, realizes that laser range finder transmits laser and signal acceptance to the building along the line of railway, and rethread internal design algorithm just can be accurate reachs railway clearance data, scans the I-steel shaft tower and obtains clearance measured data and show on the display screen to can convey intelligent Mobile terminal through bluetooth transmitter. And comparing the current building limit with the specified platform building limit to judge whether the current building limit exceeds the danger range. In this way, the measurement of the building clearance along the rail is very accurate, and the labor capacity of railway workers is greatly increased.

The technical scheme adopted by the invention is as follows: the novel method for measuring the clearance of the I-shaped steel pole tower is characterized by comprising a trolley chassis, a line laser ranging sensor, wheels, a main body support, a servo motor, a single chip microcomputer, a display screen, a Bluetooth transmission device, an intelligent mobile terminal, a line laser sensor arranged on a support frame, the support frame arranged on the trolley chassis, a tester remotely controlling a trolley to move along a rail on the rail, so that a measuring point of the line laser sensor is right opposite to the I-shaped steel pole tower, clearance measuring data obtained by scanning the I-shaped steel pole tower are displayed on the display screen, and the clearance measuring data can be transmitted to the intelligent mobile terminal through a Bluetooth transmitter.

The chassis of the trolley is made of metal, and four wheels are arranged on the chassis;

the main body bracket is provided with a turntable;

the line laser ranging sensor is arranged on the turntable and can rotate freely;

the line laser ranging sensor can measure data of the distance from the I-beam to the center line of the railway, and the measured data are used for obtaining the distance between the I-beam and the center line of the railway through an internal algorithm;

the display screen can display the distance between the I-steel and the railway center line obtained by the internal algorithm;

the Bluetooth transmission device can be transmitted to the intelligent mobile terminal by the data of the display screen;

the intelligent mobile terminal can judge whether the I-steel limit exceeds a danger range through analysis.

Compared with the traditional building clearance distance measurement method, the invention has obvious advantages: 1. the test speed is very quick by controlling the trolley to run on the tested track, and the obtained data is very accurate. The tester can finish the measurement of the building clearance along the railway in a short time. 2. By adopting the method, a measurer does not need to go down to measure, and can directly carry out remote measurement operation on the laser range finder indoors, so that the test time and the test working period are greatly reduced.

Drawings

FIG. 1 is a schematic view of the structure of the cart;

fig. 2 is a schematic diagram of a laser range finder on a trolley using line laser non-contact measurement.

Detailed Description

FIG. 1 is a schematic structural diagram of a track measuring trolley mentioned in the method, which comprises (1) a trolley on a track, (2) a main body bracket, (3) a turntable, (4) a shell, (5) a line laser sensor and (6) an angle sensor. Wherein the left and the right of the main body bracket are respectively provided with a fixing buckle I (1) and a fixing buckle II (2); the turntable (3) is arranged on the main body bracket (2); the shell (4) and the line laser sensor (5) are both arranged on the turntable (3); the angle sensor (6) is arranged on the line laser sensor (5). The shell (4), the line laser sensor (5) and the angle sensor (6) form a laser range finder. (1) The trolley on the rail can automatically walk on the rail. The laser range finder obtains the measured result to store the result inside, upload the information to the treater through bluetooth wireless communication, carry out corresponding subsequent processing again.

As shown in fig. 2:

1. a measuring tool is placed. Mounting a laser range finder on the top of the track detection trolley;

2. and carrying out initial state calibration on the laser range finder. And opening the laser ranging to enable the laser ranging to enter a measuring state. Firstly, a control system in the laser range finder calibrates the position of a laser probe;

3. firstly, rotating a laser ranging device to send line laser to a point A of an I-shaped steel plane, obtaining an angle between a line laser light and a horizontal plane as ∠ a and a length OA through an angle sensor, and then, passing a formula:

and obtaining the vertical distance L between the linear laser measurer and the left measuring surface of the I-shaped steel pole tower.

Claims

1. The invention relates to a novel limit measuring method of a railway I-steel pole tower, which adopts a laser instrument carried by a measuring trolley to measure an I-steel pole tower building along a railway, a tester can remotely control the walking of the trolley, simultaneously a control line laser sensor emits laser and receives signal data through a Bluetooth transmitter, and then limit data are accurately calculated, so that the safety of the worker is ensured, and the limit of the I-steel pole tower along the railway can be rapidly measured, wherein the laser ranging vehicle consists of (1) a trolley on a rail, (2) a main body support, (3) a turntable, (4) a shell, (5) a line laser sensor and (6) an angle sensor, wherein the left side and the right side of the main body support are respectively provided with a fixed buckle I (1) and a fixed buckle II (2); the turntable (3) is arranged on the main body bracket (2); the shell (4) and the line laser sensor (5) are both arranged on the turntable (3); the angle sensor (6) is arranged on the line laser sensor (5), the shell (4), the line laser sensor (5) and the angle sensor (6) form a laser range finder, and (1) the trolley on the rail can automatically walk on the rail.

2. The new clearance measurement method for the railway I-steel tower of claim 1, characterized in that: the tester needs to build a trolley (1) that can run on the track.

3. The new clearance measurement method for the railway I-steel tower of claim 1, characterized in that: the line laser sensor, the angle sensor and the Bluetooth transmission device on the turntable are jointly called a laser range finder.

4. The new clearance measurement method for the railway I-steel tower of claim 1, characterized in that: the angle sensor (6) in the laser range finder can measure the angle emitted by the laser, namely the angle between the laser line and the horizontal line can be obtained.

5. The new clearance measurement method for the railway I-steel tower of claim 1, characterized in that: the distance between a measured point and a line laser sensor (5) can be measured through laser emitted by a laser range finder, the horizontal distance between the line laser sensor (5) and the measured point can be obtained through angle conversion, then data are transmitted to an intelligent mobile terminal through Bluetooth, the obtained data are transmitted to a computer data processing system through wireless, and whether the limit of a tower exceeds a dangerous range or not is judged.