CN211477127U

CN211477127U - Electronic device for automatically monitoring limitation and torsional surface of contact net support

Info

Publication number: CN211477127U
Application number: CN201922288263.8U
Authority: CN
Inventors: 贺雷刚; 仝超; 卫乐; 高晋
Original assignee: Electrification Engineering Co Ltd of China Railway 17th Bureau Group Co Ltd
Current assignee: Electrification Engineering Co Ltd of China Railway 17th Bureau Group Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-11
Anticipated expiration: 2029-12-19

Abstract

The utility model belongs to the technical field of railway survey engineering, specifically an automatic monitoring contact net pillar boundary limit, the electron device of turn round face, comprises a box bod, be provided with singlechip and two laser rangefinder sensors in the box body, laser rangefinder sensor all is connected with the singlechip, two laser rangefinder sensors set up and keep a certain distance apart along line central line direction on the front and back, two laser rangefinder sensors all are perpendicular with line central line direction, the box body top still is provided with the level bubble and with the display screen of being connected with the singlechip, two landing legs about the position all is provided with respectively around the box body bottom, control the distance between two landing legs and be 80 mm. The utility model has the advantages that: the efficiency and the precision of measuring of contact net pillar side boundary limit and torsional plane degree are improved, still can implement to report to the police and remind survey crew to carry out the record to the data that do not satisfy the requirement.

Description

Electronic device for automatically monitoring limitation and torsional surface of contact net support

Technical Field

The utility model belongs to the technical field of the railway survey engineering, specifically be an automatic electronic device of monitoring contact net pillar boundary limit, torsional surface.

Background

Under the current railway operation environment, the electric locomotive has stronger transportation capacity advantage compared with the internal combustion locomotive, so the transportation capacity of the electrified railway under the same scale is far superior to that of a non-electrified railway, and the electric locomotive becomes the mainstream type of the modern railway. The electrified railway is widely applied to the construction of high-speed railways and urban rail traffic, and a plurality of non-electrified railways also realize the electrification upgrading and reconstruction one by one. No matter in new line construction or existing line electrification transformation, the contact net support column cannot be separated, and the assembly of the contact net support column has extremely high requirements on measurement accuracy.

In the railway electrification construction process, extremely high requirements are placed on the limit, the torsional surface and the buried depth of a contact network strut, and in the process of assembling the contact network strut in the existing line electrification transformation project, technicians are required to pull a ruler to confirm and recheck each step, so that the limit deficiency or the torsional surface problem of the strut can be caused by slight negligence; the support post assembly of a newly-built railway can be carried out before track laying, each foundation needs to be measured and rechecked by a total station, the operation flow is complicated, and the requirement on personnel instruments is high.

Serial number	Item	Require that
			1	Lateral limit deviation of concrete pillar	0～+100mm
2	Deviation of concrete pillar burying depth	±100mm
			3	With upright post along the line (from ground or foundation)	±0.5%
4	The end part of the anchor post along the line direction inclines towards the stay wire side	≤1%
			5	The outer side of the curve and the transverse line direction of the linear cantilever column incline to the stress direction	0～0.5%
6	Included angle between small face (side face) of strut and central line of circuit	≤3°

The assembly pair measurement (standard) of the contact net support is shown in the table above, the measurement problem in the support assembly is mainly reflected in the problems of limit deviation, burying depth deviation and included angle (twisted surface) between the side surface of the support and the central line of the line, the total station is mainly used for measurement and control on a new line, the existing line uses a level gauge to measure the burying depth, and a measuring tape is used for measuring the limit and the twisted surface. The horizontal ruler is used to control the inclination of the support column along the line direction, the inclination of the support column transverse line direction and other problems. And the distance from the steel rail to the support is pulled by a measuring tape to control the clearance and the torsional surface to have larger error, the torsional surface is calculated according to the maximum angle of 3 degrees, if the distance between the two ends of the side surface of the support is 25cm, the distance difference between the two ends and the central line of the line is only 13mm at most, the precision of the measuring tape is not enough to be accurately controlled, the clearance and the torsional surface are limited by the fact that each construction step needs to be cored, the measuring tape is pulled repeatedly, and many people neglect the rechecking of some key steps to cause irreparable loss.

Disclosure of Invention

The utility model aims at: in order to effectively improve the measurement accuracy and efficiency of a railway contact net stand column, an electronic device for automatically monitoring a contact net support limiting range and a torsion surface is provided.

The utility model discloses a following technical scheme realizes: the utility model provides an automatic monitoring contact net pillar boundary limit, the electron device of torsional surface, comprises a box bod, be provided with singlechip and two laser rangefinder sensors in the box body, laser rangefinder sensor all is connected with the singlechip, two laser rangefinder sensors set up and the certain distance in interval around along the line central line direction on, two laser rangefinder sensors all are perpendicular with line central line direction, the box body top still is provided with the level bubble and with the display screen of being connected with the singlechip, two landing legs about the position all is provided with respectively around the box body bottom, control distance (interior interval) between two landing legs and be 80 mm. The width of standard rail is 78mm, and the distance between this electron device front and back two pairs of landing legs is 80mm, and through front and back two pairs of landing legs, electron device can stably fix on the rail of contact net pillar one side, and still can be through (observing) level bubble leveling (fixed). After the electronic device is fixed, the distances from the heads of the two laser ranging sensors in the box body to the line center line are equal, the mounting positions of the laser ranging sensors can be specifically set according to actual requirements, namely, the distances from the heads of the laser ranging sensors to the line center line are set according to the actual requirements, and the heads of the two laser ranging sensors are just opposite to the side face of the tested contact net support. When the device is used for measuring, two laser ranging sensors respectively emit two ranging light rays perpendicular to the side face of a support column, the data measured by the laser ranging sensors are transmitted to a single chip microcomputer and are displayed by a display screen, the distance measured by the laser ranging sensors is the distance from the heads of the laser ranging sensors to the side face of the support column of the overhead line system, the distance (the distance data of one optional laser ranging sensor or the average value of the data of the two optional laser ranging sensors) and the distance from the heads of the laser ranging sensors to the central line of the line are the side face limit of the support column, the ratio of the difference of the distances measured by the two laser ranging sensors to the front and rear distances of the sensors is the tangent value of the included angle between the side face of the support column and the central line of the line.

Preferably, the box body is further provided with a buzzing alarm module, a difference value calculation program, a comparison program and a limit difference are written in the single chip microcomputer, the limit difference is equal to the distance L (tan a) between the front and the back of the sensor, a is the included angle between the side surface of the strut and the surface where the central line of the circuit is located (or the plane where the heads of the two laser ranging sensors are located), and the maximum included angle is 3 degrees. According to the measurement requirements of the assembly of the contact net strut, if the twisted surface is calculated according to the maximum angle of 3 degrees, the front-back spacing distance of the sensors is set to be L, the difference value of the distances measured by the two sensors is L tan3 degrees at most, the L is 25cm, the difference value is 1.31 cm at most and is about 13mm, if the difference value of the measured distances of the two sensors is larger than 13mm, the twisted surface does not meet the requirements, the buzzer alarms, and the working personnel records the data.

The utility model has the advantages that: the efficiency and the precision of measuring of contact net pillar side boundary limit and torsional plane degree are improved, still can implement to report to the police and remind survey crew to carry out the record to the data that do not satisfy the requirement.

Drawings

Fig. 1 is a schematic view of the present invention during measurement.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic diagram of twist level measurement.

Fig. 4 is a schematic diagram of the present invention.

In the figure: the method comprises the following steps of 1-a contact net support, 2-a steel rail, 3-a line center line, 4-a box body, 5-supporting legs and 6-a laser ranging sensor.

Detailed Description

An electronic device for automatically monitoring limitation and torsional surface of a contact net support column comprises three parts: the device comprises an input part, a data processing part, an output part and a power supply. The input part consists of a laser ranging sensor and a jog key, wherein the jog key comprises a power key and a difference limiting key; the data processing part is a microcomputer, namely a singlechip; the output part consists of a 12864 liquid crystal display screen and a buzzing alarm module. Two laser rangefinder sensors symmetry are installed on a nylon board, and the horizontal bubble of installation in the middle of the nylon board guarantees that the laser rangefinder head is horizontal when the bubble is horizontal. Two laser rangefinder sensors, limit difference button all are connected with the singlechip, and the singlechip still is connected with buzzing alarm module, installs whole nylon plate in the aluminum alloy plate box according to relevant size processing, exposes horizontal bubble and click button, and singlechip and display screen are connected and are inlayed as whole on the position that the board box was reserved.

The utility model discloses well two laser rangefinder sensors all are serial ports module, require range finding simultaneously and return the data of surveying to the singlechip simultaneously, consequently choose for use STC12C5A60S2 model singlechip, and the STC12C5A60S2 of selecting is the singlechip of STC company production, possess two full-duplex serial communication interfaces. The high-speed operation, low power consumption and strong pit interference capability of the high-speed operation and low power consumption are comparable to those of the conventional 8051, the instruction code of the high-speed operation and low power consumption can be completely compatible with the conventional 8051, the speed is about 10 times faster, and the high-speed operation and high-speed operation integrated circuit has a reset circuit special for MAX810, a 2-path pulse width modulation technology and 8-path high-speed ten-bit analog-to-digital signal conversion and is suitable for electromechanical control and strong interference occasions.

The common characteristics of a single chip microcomputer with the STC12C5A60S2 model are as follows: (1) the working voltage of the singlechip is as follows: 3.5V-5.5V; (2) possesses general I/O port; (3) the system is provided with double serial ports, RxD2/P1.2 and TxD 2/P1.3; (4) universal full duplex asynchronous serial ports (UARTs); (5) has EEPROM function.

Through comparing the data that two laser sensor measured, can judge whether the plane that pillar side and two laser ranging sensor head place are parallel, also can know its torsional plane size of contact net pillar. The top of the aluminum alloy plate box is provided with a horizontal bubble which can ensure that an instrument is horizontally placed on a steel rail, so that light emitted by the instrument is perpendicular to the side surface of the strut of the contact net to be measured. The instrument has the biggest characteristic that the instrument can continuously and automatically carry out real-time measurement and data comparison and analysis through the single chip microcomputer, and the measured data is displayed in a liquid crystal display screen in real time. And judging whether the difference between the two measured data meets the error requirement or not so as to give an alarm, adjusting the error precision standard (the maximum value is the distance L x tan3 degrees between the front and the back of the sensor) through a limit difference button, and if the measured data is larger than the set limit difference, making a buzzer sound and giving an alarm. The combined use of the keys and the liquid crystal display screen provides a good man-machine interaction interface for users.

Fig. 3 shows a twisting surface measurement schematic diagram, in order to show a measurement principle, the inclination degree of the side surface of the strut of the overhead line system in the diagram is large, the included angle between the side surface of the strut and the plane where the line center line is located (or the plane where the heads of the two laser ranging sensors are located) is a, m is the difference value of the measurement data of the two laser ranging sensors, L is the front-back distance between the two laser ranging sensors, tana = m/L, when a is 3 degrees, L is 25cm, and m is 13 mm.

The contact net support limitation and torsional surface monitoring operation process is as follows:

1. the electronic device is horizontally placed on the steel rail under the condition that no vehicle comes from two directions of the railway, and the railway is ready to start.

2. Pressing down the power key, observing after the instrument is started whether two laser points all are in the pillar side, just beginning to measure when two laser points appear in the pillar side simultaneously to measuring result can be immediately shown on liquid crystal display, if satisfy the limit difference of current settlement, the system acquiescence does not have the warning, if unsatisfied and set for the limit difference, bee calling organ in the instrument reports to the police, reminds the surveyor record data.

3. And modifying the set tolerance, long-pressing a tolerance button, entering a tolerance setting interface, and pressing the tolerance button after setting is finished to determine.

4. And recording data according to measurement display on the liquid crystal display screen.

5. And after the recording is finished, the device is collected to the next place for measurement.

The technical characteristics are as follows:

1) need not artifical slide rule measurement, with the device level place the rail face on, press the start key and can measure to measurement data compares automatically.

2) The device shell is formed by processing and assembling light aluminum alloy metal, so that the device is light in structure weight and convenient to carry;

3) the measuring core part consists of a singlechip, a laser sensor and a buzzer.

4) In the process of measuring construction of an electrified railway, the most common method for detecting the limitation of a contact net support and the torsional surface is to measure the side limitations of two edges of the side surface of the support by two persons at the same time, and simultaneously, the measurement data of the two edges are compared to detect the size of the torsional surface. The utility model discloses only need alone can high efficiency accomplish whole process when using, real-time measurement and carry out automatic contrast and reach the conclusion to the data that detect and report to the police, but also can adjust the qualified numerical value of the face of turning round, and the highest precision can reach 1 mm.

5) The device is light and flexible, and needs to be immediately off the way in case of emergency when measuring in a railway line.

Because the electric locomotive has stronger transportation capacity advantage compared with the internal combustion locomotive, the transportation capacity of the electrified railway under the same scale is far superior to that of a non-electrified railway, and the electric locomotive becomes the mainstream type of the modern railway. The electrified railway is widely applied to the construction of high-speed railways and urban rail traffic, and a plurality of non-electrified railways also realize the electrification upgrading and reconstruction one by one. The device is indispensable to the side limit and the twisted surface measurement in the contact net support assembly in electrochemical engineering, so a device capable of fast and automatically detecting is needed. The contact net support clearance and the preparation of twisted surface detector based on singlechip just can detect the pillar fast to the precision is much higher than artifical slide rule measurement in the past, and alone can accomplish whole operations moreover, can also remind the operator to carry out data record. The method has a great application prospect in the construction of contact net support posts and other projects for detecting parallelism.

The device is suitable for the existing line electrochemical transformation project, is also suitable for a new line which is not paved with rails, can save a large amount of time required by measurement, is also a specialized update for a measuring instrument, and has pertinence. Can improve measurement accuracy, avoid the loss that personnel's error caused, improve the efficiency of construction simultaneously.

Claims

1. The utility model provides an automatic monitoring contact net pillar boundary limit, the electron device of turn round face, a serial communication port includes box body (4), be provided with singlechip and two laser range finding sensor (6) in box body (4), laser range finding sensor all is connected with the singlechip, two laser range finding sensor set up and the certain distance in interval around along the line central line direction, two laser range finding sensor all are perpendicular with line central line direction, the box body top still is provided with the level bubble and the display screen of being connected with the singlechip, two landing legs (5) about the position all is provided with respectively around the box body bottom, control the distance between two landing legs and be 80 mm.

2. The electronic device for automatically monitoring the limitation and the torsion of the contact net strut according to claim 1, wherein the box body is further provided with a buzzing alarm module, the single chip microcomputer is a single chip microcomputer in which a difference calculation program, a comparison program and a limit difference are written, the limit difference is equal to a distance L & lttana & gt between the front and the rear of the sensor, and a is an included angle between the side surface of the strut and the surface where the central line of the line is located.