KR20170005297A - Tramline automatic tensioning systems Tension additional upper and lower position sensing system - Google Patents

Tramline automatic tensioning systems Tension additional upper and lower position sensing system Download PDF

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Publication number
KR20170005297A
KR20170005297A KR1020150094894A KR20150094894A KR20170005297A KR 20170005297 A KR20170005297 A KR 20170005297A KR 1020150094894 A KR1020150094894 A KR 1020150094894A KR 20150094894 A KR20150094894 A KR 20150094894A KR 20170005297 A KR20170005297 A KR 20170005297A
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South Korea
Prior art keywords
tension
plc
alarm
wire
weight
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KR1020150094894A
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Korean (ko)
Inventor
배사범
김철환
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한국철도공사
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Priority to KR1020150094894A priority Critical patent/KR20170005297A/en
Publication of KR20170005297A publication Critical patent/KR20170005297A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/28—Manufacturing or repairing trolley lines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold

Abstract

The present invention relates to an upper and lower position sensing system of a counterweight of a tramline automatic tension adjustment device, which is to prevent a tramline from being moved by changes in temperature by constantly recognizing a tension flow state and to save time and effort inputted to a restoring work of the tramline when the tramline is disconnected. For this, the upper and lower position sensing system of a counterweight of a tramline automatic tension adjustment device of the present invention comprises: a post installed adjacent to a railway; a pulley installed to be rotated at one side of the upper portion of each post; an electric wire consisting of a tramline which applies power to a collector plate of an upper side of a subway, a messenger wire separately disposed over and parallel to the tramline, and a yoke for connecting the messenger wire and the tramline in parallel; a tension adjusting wire connected to the electric wire and guided by the pulley; a counterweight connected to an end of the tension adjusting wire to adjust tension of the wire; an upper and lower support horizontally installed at upper and lower parts of the post to allow the counterweight to be positioned therebetween; a limit switch independently installed at a lower surface of the upper support and an upper surface of the lower support to sense upper and lower positions of the counterweight during the contact by a vertical movement of the counterweight; a power line communication (PLC) for generating an input and output contact point signal when the counterweight is in contact with the limit switch by the vertical movement thereof; an alarming means for giving an alarm in accordance with the output contact point signal of the PLC; and a counterweight position monitoring PC connected to the PLC to monitor upper and lower positions of the counterweight.

Description

[0001] The present invention relates to a tramline automatic tensioning system,

The present invention relates to an automatic tension controller for electric wire tension adjusting device, and more particularly, to a system for detecting a tension force upper and lower position, more specifically, a limit switch or a contact having the same function at the uppermost and lowermost portions of a tension- The present invention relates to a system for detecting an upper and lower tension values of a tension line of an electric wire tensioner for indicating an abnormal position of a tension weight to a maintenance person in an electrical equipment technical support system installed in an office or the like when an abnormality occurs in a tension weight and a pulley state .

Generally, the automatic line tension adjusting device for an electric line regulates the deflection of an electric wire. Such an automatic tension adjusting device is provided with an elastic member to generate a tension on the electric wire through the elastic force of the elastic member, This is a technique that allows automatic adjustment.

On the other hand, electric railway is a railway which uses electric power as a power source to operate trains and vehicles. It is making efforts to develop technology all over the world because of its fast speed, stability and convenience. The high-speed railway that is attracting attention as an institution is also a kind of train.

Hereinafter, a peripheral device for supplying electricity to a train will be described with reference to the drawings. The electric current collector of the electric train is allowed to proceed in both directions along the track by receiving electric power from the wire line device. That is, a wire line device is provided outside the line on which the train runs, and a current collector is provided on the upper side of the line so that the electric power supplied from the wire line can be received by the train.

The power collecting apparatus as described above includes a collecting plate for allowing the train to run by receiving electric power from the cabling device in a line contact with one side of the cabling device when a train is in progress, and a collecting device for applying a substantially rhombic elastic force to the lower side of the collecting plate And a supporting portion for supporting the collector plate upward.

Meanwhile, in the above-described configuration, the current collecting plate is always kept horizontal with respect to the ground even when the train is traveling at a high speed, and the upper surface is elastically supported by the support portion in a line contact with the bottom surface of the catenary cable . Accordingly, the collecting plate maintains the state of contact with the electric wire even if the vertical vibration occurs during the operation of the electric railway, so that the electricity supply to the electric railway is not short-circuited.

The above-mentioned wire harnesses allow electric power supplied from the substation to be supplied to the electric train through contact with the electric collectors, and are provided with a structure in which the land and the both ends, which are spaced apart from each other at regular intervals along the rail, And a tension adjusting device for adjusting the tension of the electric wire and the electric wire to which power is applied to the current collecting plate.

In the structure of the above-described tension adjusting device, the strut has used a concrete pillar having a cylindrical shape of concrete. However, in order to protect the pillar from cracks and fractures caused by the damage of concrete, Type steel pipes are preferred.

In addition, the electric wires are largely composed of a wire line which applies electric power to the current collecting plate in line contact with the current collecting plate, and a dropper arranged in the vertical direction between the wire line and the wire line which are spaced parallel to the upper side of the wire line.

In the above-described configuration, the electric wire is a core component of the electric wire, and when the electric wire moves at a high speed, it contacts with the current collecting plate to supply electricity to the electric railway. Therefore, a tread line or a cadmium copper wire is used so that the catenary wire is not abraded by the frictional force generated by contact with the current collecting plate.

On the other hand, in the above-described configuration, the hook line serves to support the catenary line upward so that deflection does not occur due to its own weight. Both ends are stretched by the tension adjusting device and can be held horizontally with respect to the ground, And the electric wire are constrained to each other by a dropper having a length corresponding to the distance between the electric wire and the electric wire, so that the electric wire is kept parallel by the wire.

However, as described above, there is no device for monitoring the position of the pulley weight in the pulley type automatic tension adjusting device installed on the railway line which is currently being powered, so the X and Y lengths must be checked through a walk or trains.

 Therefore, it is possible to find out immediately when a tension is applied to the upper and lower supports due to sudden abnormalities such as wire burnout of the pull-up type automatic tension device or sudden fluctuation of tension to the electric wire due to sudden temperature change or external impact Without a monitoring system, it is impossible to know immediately whether there is an abnormality in the tension line or the cable line without going to the field.

In addition, in the prior art, when a maintenance worker arrives at the site and confirms the state, when the cable line slackens or shrinks and touches the upper and lower supports of the pulley, the abnormality of the tension line and the abnormality of the transmission line are detected There is a problem that it can not.

Korean Patent Publication No. 2013-0025997 (published on March 13, 2013) Korean Patent Publication No. 2011-0134294 (Dec. 14, 2011) Korean Patent Publication No. 2010-0136225 (Dec. 28, 2010) Korean Registered Patent No. 10-0853100 (Published in August 2008) Korea Patent Publication No. 2006-0106973 (published on October 13, 2006)

SUMMARY OF THE INVENTION The present invention has been conceived to solve all the problems of the prior art, and it is an object of the present invention to reduce the time and effort required to prevent movement of an electric wire according to a temperature change, The present invention has been made to solve the above-mentioned problems occurring in the prior art.

Another object of the present invention is to provide a method for preventing the movement of a catenary line due to a change in temperature and saving time and efforts for recovering a catenary line when the line is disconnected, The purpose of this study is to prevent accidents caused by train delays.

The present invention configured to achieve the above-described object is as follows. That is, according to the present invention, there is provided an automatic tension control system for a wire tension tester, comprising: a pulley installed rotatably on one side of an upper portion of a pillar and a pillar provided adjacent to a railway; A wire made of a yoke connected parallel to the upper side of the electric cable and a yoke connecting the wire and the wire in parallel, a wire connected to the electric wire but connected to the end of the tension adjusting wire and the tension adjusting wire guided by the pulley, The upper and lower supporting members are disposed horizontally above and below the support so as to be positioned between the additional tensile forces; A limit switch provided on each of a lower surface of the upper support and an upper surface of the lower support to detect a vertical position of the tension in contact with the upward and downward flow of the tension; PLC that generates input / output contact signal when contact is made according to the upward and downward flow of the tension weight on the limit switch; An alarm means for issuing an alarm in accordance with the output contact signal of the PLC; And PC for tension position monitoring for monitoring the upper and lower positions of the tension weights connected to the PLC.

In the configuration according to the present invention as described above, the alarm means may be an alarm bell for audibly recognizing sounds according to the output contact signal of the PLC or an alarm for visually recognizing the alarm signal.

In the configuration according to the present invention, the PLC may further include a circuit breaker for interrupting the alarm by the alarm means.

In addition, in the configuration according to the present invention, it is preferable that the PLC has a sequence number for each of the tension weights, so that it is possible to know the tension value at the point where the tension is generated at the point where the abnormality occurs during the alarm by the alarm means.

Meanwhile, in the configuration according to the present invention, the PLC and the position monitoring PC are installed in the electrical equipment technical support establishment, so that it is better to monitor the tension weight installed in the entire facility.

In the configuration according to the present invention as described above, a tension weight guide pipe installed between the upper and lower supports to guide the upper and lower straight lines when the tension weight moves up and down can be further provided.

According to another aspect of the present invention, there is provided a straddle-type straddle-type straddle-type vehicle, comprising: a pulley provided rotatably on one side of an upper portion of a post and a post adjacent to the line; A wire made of a yoke for connecting the wire bundle and the wire in parallel, a tension adjusting wire connected to the wire but guided by the sheave, and a tension wire for adjusting the wire tension adjusting device connected to the end of the tension adjusting wire, An upper and a lower support installed horizontally above and below the support so as to be positioned between the tension additions; A tension weight guide tube installed and fixed between the upper and lower support rods in a vertical direction so as to guide in a linear direction when the tension weight moves up and down; A tension increment position sensing means for sensing a corresponding position of the tension weight through detection of a magnetic force when the tension weight moves up and down; A PLC which generates an input / output contact signal when detecting the upper and lower positions of the tension weight through the tension weight position sensing means; An alarm means for issuing an alarm in accordance with the output contact signal of the PLC; And PC for tension position monitoring for monitoring the upper and lower positions of the tension weights connected to the PLC.

In the above-described configuration, the tension weight position sensing means includes a plurality of permanent magnets installed at upper and lower parts of a predetermined interval at one side of the tension weight guide pipe; And a tension weight position sensor that is installed on one side of the tension weight and senses the position of the tension weight by sensing the magnetic force of the permanent magnet when the tension weight moves up and down.

In the configuration according to the present invention, the alarm means may be an alarm bell which audibly recognizes sounds according to an output contact signal of the PLC or an alarm which can be visually recognized.

In addition, in the configuration according to the present invention, the PLC may be further provided with a circuit breaker for blocking the alarm by the alarm means.

According to the technique of the present invention, the flow state of the tension can be grasped at all times, and the time and effort required to prevent movement of the catenary line according to the temperature change and to restore the catenary line when the catenary line is disconnected can be saved.

In addition, according to the present invention, the flow state of the tension can be grasped at all times, so that it is possible to save the time and effort required for preventing movement of the catenary line according to the temperature change and repairing the catenary line when the catenary line is disconnected, There is an advantage to prevent accidents.

1 is a system diagram showing a system for detecting the tension upper and lower positions of an electric wire tension adjusting device according to the present invention.
FIG. 2 is a system diagram of another embodiment of the present invention, in which the automatic tension control device for a wire electric cable according to the present invention is used.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a system for detecting an upper and lower tension of a wire tension automatic tensioner according to the present invention will be described in detail with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram showing a system for detecting an upper and lower tension value of an electric wire tension adjusting device according to the present invention. FIG.

As shown in FIG. 1, the system for detecting tension of upper and lower tangs of an electric wire tension adjusting apparatus 100 according to the present invention includes a strut 10 provided adjacent to a railway, a pulley 50 rotatably installed on one side of each of the struts 10, (34) and a cage line (34) and a cage line (32) arranged parallel to the upper side of the cage line (32) A tension control wire 40 connected to the wire 30 and guided by the sheave 20 and a tension control wire 40 connected to the end of the tension control wire 40, And a tension weight (50) for adjusting the tension of the wire (30).

The present invention relates to an automatic tension control system for an electric wire tension adjusting apparatus and a wire tension control apparatus for the same. The upper and lower supports 110a and 110b are installed on the lower surface of the upper support 110a and the upper surface of the lower support 110b to sense the upper and lower positions of the tension 50 in contact with the upward and downward flows of the tension 50, A PLC 130 for generating input / output contact signals upon contact with the limit switches 50a and 120b in response to upward and downward flow of the tension weights 50, An alarm means 140 for issuing an alarm in response to a signal, and a PC 150 for monitoring a tension weight position, which is connected to the PLC 130 and monitors the upper and lower positions of the tension weights 50.

The tension measuring apparatus 100 for detecting the tension of the electric wire according to the present invention configured as described above is provided with a lower surface of the upper support table 110a and upper surface limit switches 120a and 120b of the lower support table 110b . At this time, the limit trenches 120a and 120b provided on the upper and lower supports 110a and 110b are arranged on the upper and lower flow lines of the tension weights 50. [

Meanwhile, the limit switches 120a and 120b are connected to the input side of the PLC 130 via a communication line. The alarm means 140 is connected to the output side of the PLC 130. At this time, a circuit breaker 160 for blocking the alarm means 140 is installed on the output side of the PLC 130.

In the above-described configuration, the alarm unit 140 may use an alarm bell that sounds a sound so that the manager can recognize the alarm according to the output contact signal of the PLC 140, An alarm or the like may be used. At this time, the alarm means 140 may use the alarm bell and the alarm light.

Therefore, according to the present invention, the contact of the limit switches 50a and 50b with the limit switches 120a and 120b is performed according to the upward and downward flow of the tension weights 50. When the input contact signal is input to the PLC 140, An alarm signal can be outputted through the alarm means 140 by the output contact signal to cause the manager to cause an abnormality such as a wire burnout of the automatic tension device of the pulley type due to sudden change in temperature or an external impact or a sudden fluctuation in tension to the electric wire So that they can know it without going to the scene.

When an alarm occurs due to the contact with the limit switches 120a and 120b due to the upward and downward movement of the tension weights 50 as described above, the manager recognizes that the abnormality has occurred through the alarm, 50, and then interrupts the alarm through the breaker 160.

On the other hand, the PC (150) for monitoring the tension weight position is connected to the PLC (130) via an RS232C cable (132). At this time, the PLC 130, the alarm means 140, and the tension weight position monitoring PC 150 may be installed in the electrical equipment technical support establishment so that the tension weight 50 installed in the pipe can be easily handled by the management personnel working in the establishment To be monitored.

In the configuration according to the present invention as described above, the PLC 130 has the sequence number for each of the tension weights 50, and the tension weight 50, in which an alarm is generated by the alarm means 140, And the tension weight 50 provided on the support 10. In this case, the data is output to the PC 150 for monitoring the tension weight position, which is a management PC, and the position of the tension weight 50 of the abnormality occurrence is displayed in the office by the tension weight position monitoring PC 150, .

In addition, in the configuration according to the present invention as described above, a tension weight guide tube (not shown) is installed between the upper and lower support rods 110a and 110b to guide the tension weight 50 in the up and down direction when the tension weight 50 moves up and down 170 may be further installed. The tension weight guide pipe 170 allows the tension weights 50 to flow only in the up and down direction so that the contact can be made smoothly when the limit switches are in contact with the limit switches 120a and 120b.

In the technique of the present invention constructed as described above, the limit switches 120a and 120b or contacts having the same function are installed on upper and lower sides of the pulley type tension adjusting device, and then the PLC 130 and the tension weight position monitoring PC When the abnormality occurs in the state of the catenary line 32, the tension weight 50 and the pulley 20 by using the electric support system 150, the abnormal position of the tension weight 50 is maintained It displays the alarm to the maintenance person and alerts at the same time.

When the abnormality occurs in the state of the electric wire 32, the tension weight 50 and the pulley 20 through the configuration according to the present invention as described above, the maintenance person can recognize the abnormality through the alarm, It is possible to detect the fact that there is an abnormality, and it is also possible to perform the position adjustment of the tension weight 50 and the readjustment of the pulley 20 by early dispatch to the field, Prevention of a train accident and accident of a train can be prevented in advance.

In the operation of the tension weight upper and lower position sensing system 100 according to the present invention configured as described above, the tension weight 50 flows due to temperature change and disconnection of the catenary line 32, Contact signals are input to the input contacts of the PLC 130 when the contacts are in contact with the limit switches 120a and 120b provided on the supports 110a and 110b. At this time, an output signal is outputted to the output contact side of the PLC 130, an alarm is issued through the alarm means 140, and the tension weight 50 is connected to the upper side limit switch The positional state indicating whether the lower limit switch 120a has touched the lower limit switch 120b or the lower limit switch 120b has been displayed.

For example, the tension weights 50 of sixteen places (for example) provided in the A to B inter-stationary lines are numbered and the upper and lower supports 110a and 110b installed above and below the column 10, The upper and lower limit switches 120a and 120b are operated when the tension weight 50 moves up and down and touches the upper and lower supporters 110a and 110b when the limit switches 120a and 120b are installed in parallel.

On the other hand, an alarm is generated when the input DI contacts 0 to 15 of the PLC 130 are attached to the number of the tension weights 50 of the No. 1 to No. 16 previously provided through the circuit configuration using the communication UTP cable. This makes it easy to identify the number of struts (50) where the abnormality occurs. When a plurality of PLCs 130 are connected in parallel to one main body of the PC 150 for tension position monitoring using the RS232C cable 132, The installed tension weight 50 can be easily monitored.

FIG. 2 is a block diagram of another embodiment of the present invention, in which an automatic tension control device for a wire electric cable is provided.

As another embodiment of the technology according to the present invention, as shown in FIG. 2, a tension weight position monitoring system 200 according to another embodiment includes upper and lower A tension weight guide pipe 220 which is installed and fixed between the upper and lower support rods 210a and 210b in the vertical direction so as to guide the tension weight 50 in a linear direction when the tension weight 50 moves up and down, A tension weight position sensing means 230 for sensing a corresponding position of the tension weight 50 by sensing a magnetic force during vertical movement of the tension weight 50, An alarm means 250 for generating an alarm in response to an output contact signal of the PLC 240 and an alarm means 250 connected to the PLC 240 to generate an upper and a lower position of the tension weight 50 And a PC 260 for monitoring a tension weight position for monitoring the tension.

In the tension weight position monitoring system 200 according to another embodiment of the present invention, the tension weight position sensing means 230 includes a plurality of permanent magnets 220 installed at upper and lower parts of a predetermined distance on one side of the tension weight guide pipe 220, And a tension weight position sensor (not shown) installed at one side of the tension weight 50 for sensing the position of the tension weight 50 by detecting the magnetic force of the permanent magnet 232 when the tension weight 50 moves up and down 234).

In order to determine the exact position of the tension weights 50 when the tension weights 50 are moved up and down in the above-described structure, a plurality of permanent magnets 232, The sequence number for each position must be fixed. The magnetic force of the permanent magnet 232 on the corresponding position moved by the tension weight 50 in the upward and downward movement of the tension weight 50 is sensed through the tension weight position sensor 234 so that the position of the tension weight 50 can be accurately I can detect it.

Of course, the alarm means 250 according to another exemplary embodiment of the present invention as shown in FIG. 2 may also be configured to be audible in response to the output contact signal of the PLC 240, like the alarm means 130 shown in FIG. An alarm bell which sounds a perceptible sound, or an alarm which can be visually perceived. Of course, the alarm means 240 can use both the alarm bell and the alarm light.

In addition, it is needless to say that the PLC 240 according to another embodiment of the present invention may be further provided with a circuit breaker 270 for interrupting the alarm by the alarm means 250 as in FIG.

2, the functions of the PLC 240, the alarm means 250, the tension weight position monitoring PC 260, and the breaker 270 are the same as those shown in FIG. 1, I will not.

As described above, according to the present invention, the abnormal state of the tension weight 50 according to the flow state of the catenary line 32 can be easily grasped by the office, and the time required to view the state of the tension during the traverse of the train or the walk And the state of the tension can be grasped in advance, thereby securing the maximum working time and preventing the train delay.

The present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the technical idea of the present invention.

10. Holding 20. Pulley
30. Electricity line 32. Electricity line
34. Bond wire 40. Tension control wire
50. Tension weight 60. House front plate
100, 200. Tension weight position sensing system
110a, 210a. Upper support
110b, 210b. Lower support
120a, 120b. Limit switch
130, 240. PLC
140, 250. An alarm means
150, 260. Tension weight position monitoring PC
160, 270. Breaker
170, 220. Tension weight guide tube
230. Tension weight position sensing means
232. Permanent magnet
234. Tension position sensor

Claims (10)

A railway car which is installed adjacent to the railway, a pulley which is rotatably installed on one side of the upper portion of each of the pillars, a columnar line which applies electricity to the upper side collecting plate of the train, a joint line spaced parallel to the upper side of the columnar line, A tension adjusting wire connected to the electric wire and guided by the electric wire, and a tensile force adjusting device connected to the end of the tension adjusting wire for adjusting the tension of the electric wire, In constructing the weighted position sensing system,
Upper and lower supports vertically disposed above and below the struts to be positioned between the tension additions;
A limit switch installed on each of a lower surface of the upper support and an upper surface of the lower support to sense the upper and lower positions of the tension weights upon contact with the upward and downward flows of the tension weights;
A PLC for generating an input / output contact signal upon contact with the limit switch in accordance with the upward and downward flow of the tension weight;
An alarm means for issuing an alarm in accordance with an output contact signal of the PLC; And
And a PC connected to the PLC for monitoring the upper and lower positions of the tension weights, wherein the tension weight position monitoring PC monitors the upper and lower positions of the tension weights. 2. The apparatus according to claim 1, wherein the alarm means is an alarm bell for emitting audible perceptible sound or an alarm for visually recognizing according to an output contact signal of the PLC. Detection system. The system of claim 1 or 2, wherein the PLC further comprises a circuit breaker for blocking an alarm by an alarm means. The PLC according to claim 3, wherein the PLC has an order for each of the tensile weights, so that it is possible to know a tension amount installed on the strut at a point where an abnormality occurs during an alarm by the alarm means, Automatic tension control system for electric wire. The PLC according to claim 4, wherein the PLC and the position monitoring PC are installed in an electrical equipment technical support establishment so as to monitor the tension installed in the entire facility. Detection system. 6. The system of claim 5, further comprising a tension weight guide tube installed between the upper and lower supports for guiding the upper and lower straight lines when the tension weight moves up and down. A railway car which is installed adjacent to the railway, a pulley which is rotatably installed on one side of the upper portion of each of the pillars, a columnar line which applies electricity to the upper side collecting plate of the train, a joint line spaced parallel to the upper side of the columnar line, A tension adjusting wire connected to the electric wire and guided by the electric wire, and a tensile force adjusting device connected to the end of the tension adjusting wire for adjusting the tension of the electric wire, In constructing the weighted position sensing system,
Upper and lower supports vertically disposed above and below the struts to be positioned between the tension additions;
A tension weight guide pipe installed and fixed between the upper and lower support bars in a vertical direction to guide the linear weight in a linear direction when the tension weight is vertically moved;
A tension weight position sensing means for sensing a corresponding position of the tension weight by sensing the magnetic force during the vertical movement of the tension weight;
A PLC for generating an input / output contact signal upon detection of a vertical position of the tension weight through the tension weight position sensing means;
An alarm means for issuing an alarm in accordance with an output contact signal of the PLC; And
And a PC connected to the PLC for monitoring the upper and lower positions of the tension weights, wherein the tension weight position monitoring PC monitors the upper and lower positions of the tension weights. [8] The apparatus of claim 7, wherein the tension weight position sensing means comprises: a plurality of permanent magnets installed at one side of the tension weight guide tube at regular intervals up and down; And
And a tension weight position sensor disposed at one side of the tension weight for detecting a position of the tension weight by sensing a magnetic force of the permanent magnet when the tension weight moves up and down. Tensile strength upper and lower position detection system. The electric line tension adjusting device according to claim 7 or 8, wherein the alarm means is an alarm bell for emitting a sound audibly perceivable according to an output contact signal of the PLC or an alarm for visual recognition. Tensile strength upper and lower position detection system. 10. The system of claim 9, wherein the PLC further comprises a circuit breaker for interrupting the alarm when the alarm is activated.
KR1020150094894A 2015-07-02 2015-07-02 Tramline automatic tensioning systems Tension additional upper and lower position sensing system KR20170005297A (en)

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KR101997100B1 (en) * 2019-02-28 2019-07-05 유충희 Tension Adjusting Apparatus of Electric Car Line
CN111256733A (en) * 2018-11-30 2020-06-09 国家电投集团远达环保工程有限公司重庆科技分公司 Instrument probe protection device and measuring equipment
CN113581026A (en) * 2021-05-28 2021-11-02 中铁七局集团电务工程有限公司 Precision control method of pneumatic tension compensation device
CN113739849A (en) * 2021-09-03 2021-12-03 上海地铁维护保障有限公司 Concealed lower anchor weight detection device of rail transit contact net
KR20230032715A (en) 2021-08-31 2023-03-07 주식회사 네이블커뮤니케이션즈 System for detecting disconnection of catenary
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CN116767034A (en) * 2023-08-21 2023-09-19 四川智华电气有限公司 Tensioning method for power supply body of mobile contact net of freight station
CN116767034B (en) * 2023-08-21 2023-12-26 四川智华电气有限公司 Tensioning method for power supply body of mobile contact net of freight station

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