KR101908299B1 - Magnetic clutch for Point Machine - Google Patents

Abstract

According to the present invention, A line switching module provided outside the housing for switching lines; A driving motor provided in the accommodation space; A first flywheel connected to the driving motor by a first rotating shaft and rotated along with driving of the driving motor, and having a magnet around the rotating shaft; A second flywheel connected to the first flywheel via a second rotation shaft, and a second flywheel disposed between the first flywheel and the second flywheel, A second flywheel for driving the line switching module; A load measuring unit for measuring and managing an overload in real time so that the magnetic clutch is not overloaded when the operation of the drive motor is not affected or the operation is interrupted; And a reverse rotation sensing unit that maintains a constant frictional torque regardless of the temperature and controls power of the driving motor so that reverse rotation does not occur at the end of switching.
Therefore, the present invention is 100% compatible with the friction pneumatic machine, and maintenance cost is reduced because maintenance inspection is not required at all, and safety accidents caused by maintenance failure can be prevented.

Description

{Magnetic clutch for Point Machine}

The present invention relates to a magnetic clutch for a line converter, and more particularly, to a magnetic clutch for a line converter, and more particularly, to a magnetic clutch for a line converter, ; And a reverse rotation sensing unit for maintaining power of the driving motor so as not to generate a reverse rotation that is repelled when switching is completed, regardless of the temperature, and maintenance and inspection costs are reduced, , And a magnetic clutch for a line-switching machine capable of preventing a safety accident caused by maintenance failure.

Generally, the clutch (Torque limiter) is one of the components of the MJ81 type line converter used for high-speed railway train and general railway. It is a key technical part assembled at the intermediate position of power transmission during operation of the line- .

The MJ81 type line converter is a device that switches the high-speed diverter, and the internally installed clutch is the part that connects between the motor and the gear.

 The name in Korea is known as a pneumatic clutch or clutch, and it is used as a torque limiter in English.

 This includes a clutch that transmits the power of the two shafts, and a special pneumatic actuator with a limit function that must transmit power only at a constant torque (torque).

The role of the conventional pneumatic crankshaft plays an important role in preventing a safety accident by preventing the breakage of a line switching unit or a branching unit by causing a torque to be transmitted through a predetermined range of torque.

 Prevents damage due to impact to other parts when the electric motor is overloaded.

 If the power to the electric motor is cut off, kinetic energy of the drive part is relaxed to prevent breakage of the line converter.

At this time, the line converter is operated and the electric motor can be rotated while the electric motor power is cut off by the contact breaker.

In the above conventional pneumatic converter, two types of pneumatic compressors are used in the MJ81 type line converter as follows.

Among them, Frictional Torque Limiter uses the principle of manually adjusting the spring tension to adjust the limit value of the power transmission torque by maintaining the slip contact interval between the internal friction discs. The transmission torque specification 1.5 ~ 2 Nm. It is installed in the MJ81 type line switching system of Korea High Speed Railway, and there is a disadvantage that the maintenance engineer has to periodically check and adjust the torque.

In addition, the magnetic torque limiter (Magnetic Torque Limiter) is built in a permanent magnet (magnet) inside the pivot, the non-contact friction slip between the two is a structure to transmit torque with a constant torque.

The transmission torque specification is 1.5 ~ 2 Nm. It is 100% compatible with the friction pendulum. It does not require any maintenance inspection, thus reducing maintenance cost and preventing safety accidents due to maintenance failure.

As can be seen from FIG. 1, the magnetic pneumatic device, which requires no maintenance and can be used for a long time, has the following advantages over the conventional friction clutch.

 1. Reduced maintenance costs

  - Maintenance is not required compared with friction pneumatic system.

  Reduce manpower and improve manpower efficiency

  - Reduced replacement costs due to end of life or malfunction of the friction pneumatic system

 2. Extending the life of the line switch

  - Friction pendulum Lifetime is permanent compared to limited lifetime

 3. Improve safety

  - Improved stability by eliminating the possibility of maintenance failure of friction clutch

  - It is structurally simpler and stronger than the friction pneumatic actuator, so there is no fear of failure.

 4. Compatibility

 - Replaceable with existing friction clutch

2, the conventional Korean Patent No. 1567043 discloses that the first rotation shaft 144 and the second rotation shaft 154, including the first flywheel 140 and the second flywheel 150, Is formed in the same manner as in the first embodiment. However, in the present embodiment, at least one of the first flywheel 140 and the second flywheel 150 is formed to be movable back and forth, and the distance between the first flywheel 140 and the second flywheel 150 is variable.

The reason for this is to adjust the magnitude of electromotive force induced by adjusting the distance between the magnet 142 of the first flywheel 140 and the conductor 150 of the second flywheel 150.

More specifically, even when the second flywheel 150 is not rotated due to a load applied when the line switching module is driven, some induced twisting occurs in the second rotation shaft 154 due to induced electromotive force .

Therefore, in order to prevent such a phenomenon, the distance between the first flywheel 140 and the second flywheel 150 may be varied in order to reduce the magnitude of electromotive force induced in the prior art.

 In conclusion, the present invention provides a magnetic clutch corresponding to an electromotive force that is induced differentially by adjusting the magnitude of electromotive force induced by adjusting a separation distance.

In addition, all of the MJ81 line switching systems currently installed in Korea are equipped with a manual clutch, and it is necessary to perform maintenance maintenance periodically with periodic inspection cycle. In case of maintenance that must be performed in a short time, Failure to maintain a safety accident is inevitable.

There are obstacles from the proper torque failure of the clutch when the MJ81 transmission line failure occurs. Development of the magnetic clutch helps to extend the life of the line switching gear. Reduces the direct cost of maintenance manpower, It is a necessary development considering the cost of preventing safety accidents due to the elimination of unsafe factors.

Therefore, applying the manual clutch of the MJ81 line converter to the magnetic clutch reduces maintenance costs, reduces maintenance costs, and reduces the number of points of failure. Stability of the line stabilizer As the reliability of the rail improved, Synergy effects can be expected.

The development and localization of the MJ81 line converter magnetic clutch should be done in order to improve and improve the facilities according to the status of the developing Korean railway and to provide the safe operation and high quality service of the train by developing excellent products .

Korean Patent No. 1037661 Korea Patent No. 1567043 Korean Patent No. 1015974

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a magnetic clutch or an electric motor in which a large impact is not given to the respective parts when the operation is completed and an overload is not applied to the magnetic clutch or the motor, To 2 mdaN (1.5 to 2 Nm), and does not generate a reverse rotation that is repelled when the switching operation is completed.

Further, the present invention provides a magnetic clutch for a line converter, which can control the magnitude of the electromotive force by controlling electric power in the control unit, thereby operating the clutch with a magnetic force that varies accordingly, and maintaining the characteristics of the magnetic clutch, The purpose is to do.

According to an aspect of the present invention, there is provided a portable terminal comprising: a housing having a housing space formed therein; A line switching module provided outside the housing for switching lines; A driving motor provided in the accommodation space; A first flywheel connected to the driving motor by a first rotating shaft and rotated along with driving of the driving motor, and having a magnet around the rotating shaft; A second flywheel connected to the first flywheel via a second rotation shaft, and a second flywheel disposed between the first flywheel and the second flywheel, A second flywheel for driving the line switching module; A load measuring unit that measures and manages a load in real time so as not to overload the magnetic clutch when the operation of the drive motor is not performed or the operation is interrupted; And a reverse rotation sensing unit that maintains a constant frictional torque regardless of the temperature and controls the electric power of the driving motor so as to prevent a reverse rotation that is repelled when the switching is completed.

The reverse rotation sensing unit maintains a constant frictional torque of 1.5 to 2 mdaN regardless of the temperature, maintains a switching force of 200 kg to 400 kg, and a switching time of 5 sec.

In order to limit the maximum output value of the drive motor in multiple steps, the drive motor may be driven to rotate at a time point when the axis rotation is completed or when the rotation of the main rotation axis is completed, And a TPR (Thyristor Power Regulator) for controlling the speed to a constant level.

Differentiating and integrating operations according to a control deviation from a value obtained by feedback and digital conversion of a signal outputted for driving the driving motor and controlling the driving motor by outputting a control signal through calculation, And a PLC control unit in which a low load mode in which the drive motor is intermittently operated for a predetermined time is activated when a motor or a magnetic clutch is overloaded or a reverse rotation occurs.

Wherein a slip ring and a brush are provided around the one end of the rotary shaft, the power of the power transmitted through the brush is transmitted to the slip To the electromagnet of the second flywheel via a ring.

The present invention as described above is 100% compatible with the frictional pneumatic machine and requires no maintenance inspection, thus reducing maintenance costs and preventing safety accidents caused by maintenance failure.

In addition, since the present invention adjusts the distance by adjusting the distance, the magnitude of the electromotive force induced is adjusted without using the proportional, derivative, integral (PID) calculation, or TPR (Thyristor Power Regulator) No need to reduce manufacturing costs and increase durability.

Further, according to the present invention, it is possible to transmit a torque with a certain range of torque, thereby preventing a clutch failure of a line-switching unit, which may be caused by a reverse rotation in which a motion is obstructed or repelled, thereby preventing a safety accident.

In addition, the present invention can prevent the generation of noise due to the spark generated between the brush and the slip ring, as well as overcoming the motor life limit due to the brush wear.

In addition, since carbon particles are not generated by brush wear, the present invention has an advantage that shot is not generated even when applied to a high-voltage motor, and there is no fear that the slip ring is damaged by carbon particles.

1 is a photographic view showing an MJ 81 type line switching device according to the prior art.
2 is a view showing a line converter including an electronic clutch using a distance between a pair of flywheels according to the prior art.
3 is a view showing the overall configuration of a magnetic clutch for a line converter according to an embodiment of the present invention.
Fig. 4 is a view showing the S portion of Fig. 3 in detail.
5 is a view showing the overall configuration of an apparatus to which a magnetic clutch for a line converter is applied according to an embodiment of the present invention.
6 is a view showing a detailed configuration including a TPR and a PLC controller in an apparatus to which a magnetic clutch for a line converter is applied according to an embodiment of the present invention.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

FIG. 3 is a view showing the overall structure of a magnetic clutch for a line converter according to an embodiment of the present invention, and FIG. 4 is a view showing a detail S of FIG.

3, an electronic clutch according to the present invention is disposed between the drive motor 10 and the speed reducer 20.

3, the second flywheel 50 receives the rotational force transmitted from the drive motor 10 through the first flywheel 40 through the strong magnetic force and transmits the rotational force to the speed reducer 20 It plays a role.

The rotary shaft 54 connected to the second flywheel 50 is formed in the shape of a hollow tube and accommodates the wirings in the inner circumferential hole and the slip ring 35 is provided around the one end.

The electromagnet 52 is fixed to the second flywheel 50 so that the wiring connected to the electromagnet 52 may be unstable due to the rotation of the second flywheel 50. [

The slip ring 35 is configured to solve the problem of unsecured wiring as described above and is also transmitted through the brush 32 to the rotation of the second flywheel 50 through the wiring accommodated in the rotary shaft 54 The electric power of the power source 300 can be stably supplied to the electromagnet 52.

4, the conductive material is received in the accommodating portion to electrically connect the brush 32 and the slip ring 35. [

The conductive portion A is a conductive paste prepared by dispersing a powder of a conductive material such as silver, copper, nickel or the like in a fluid of a conductive material or a binder component such as a synthetic resin or a conductive paste such as carbon black, graphite, silver, copper, And a conductive powder composed of a powder of a material.

Further, as an embodiment of the present invention, it is exemplified that the conductive portion A is in the form of a conductive material, for example, a conductive metal which is kept in a liquid state at room temperature. However, the present invention is not limited thereto. The conductive part A of the present invention may be in the form of containing a conductive paste or may be in the form of containing a conductive powder. The conductive fluid A, the conductive paste, The present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof.

Therefore, the present invention can prevent the generation of noise due to the spark generated between the brush 32 and the slip ring 35, as well as overcoming the motor life limit due to the wear of the brush 32.

In addition, since the present invention does not generate carbon particles due to abrasion of the brush 32, there is no risk of occurrence of short circuit even when applied to a high voltage motor, and advantageous effects that the slip ring 35 is not damaged by carbon particles .

FIG. 5 is a diagram showing the overall configuration of a device to which a magnetic clutch for a line converter according to an embodiment of the present invention is applied. FIG. 6 is a block diagram of an overall configuration of a device to which a magnetic clutch for a line converter is applied according to an embodiment of the present invention. Fig.

5, the line switch 100 according to the first embodiment of the present invention includes a housing 12, a drive motor 10, and a speed reducer 20. As shown in FIG.

The housing 12 has a receiving space therein and is provided to enclose other components. The driving motor 10 is provided in the accommodation space to generate a driving force. The driving force generated by the driving motor 10 can be transmitted to the line switching module via the speed reducer 20 and the main rotating shaft 22. [

An electronic clutch is provided between the speed reducer 20 and the drive motor 10 to prevent the drive motor 10 from being damaged when the load applied during line switching is a certain level or more. Hereinafter, the electronic clutch will be described in detail.

Referring to FIGS. 5 and 6, the electronic clutch includes a first flywheel 40 and a second flywheel 50.

Specifically, the first flywheel 40 is connected to the driving motor 10 by a first rotating shaft 44, and is rotated along with the driving of the driving motor, and a magnet 42 is provided around the first flywheel 40.

In this embodiment, the magnet 42 is a permanent magnet, but it is needless to say that an electromagnet may be applied.

In addition, the first flywheel 40 is formed in a circular shape in the present embodiment, and the magnet 42 is provided in the form of a ring along the periphery of the first flywheel 40.

The second flywheel 50 is spaced apart from the first flywheel 40 and is provided with a conductor or electromagnet 52 facing the magnet 42 along the circumference. Accordingly, when the first flywheel 40 is rotated by the driving motor 10, the second flywheel 50 can be rotated in the same direction together with the electromotive force induction. That is, when the first flywheel 40 is rotated in the forward direction, the second flywheel 50 is also rotated in the forward direction. When the first flywheel 40 is rotated in the reverse direction, the second flywheel 50 is rotated in the reverse direction Will be.

The rotational force of the second flywheel 50 is transmitted to the line switching module through the speed reducer 20, and the line switching module is driven to switch the line.

On the other hand, the second flywheel 50 will not rotate naturally when the load applied to the line switching module is larger than the induced electromotive force due to various causes.

Since the first flywheel 40 and the second flywheel 50 are separated from each other and are provided in a noncontact manner, friction between the first flywheel 40 and the second flywheel 50, unlike the conventional friction type clutch, . Therefore, the influence of the non-rotation of the second flywheel 50 is not transmitted to the drive motor 10, so that breakage of the drive motor 10 can be prevented.

The MJ81-type line converter according to the present invention is a line converter used in a branch portion having a large crossing number (generally, 18 or more branches). Since the branching angle is small and the lead curve radius is large, It is used for the train operation section or the connection section of the existing line and the high-speed train and the main line of the high-speed section.

The magnetic clutch for a line converter according to the present invention is electrically connected to the load measuring unit 210 and the reverse rotation sensing unit 220 to supply power to the drive motor 10 or the like in accordance with the reverse rotation that is repelled by the load.

The load measuring unit 210 measures and manages the load or the switching force in real time so that the magnetic clutch is not overloaded when the operation of the driving motor is completed and the operation is obstructed.

The reverse rotation sensing unit 220 maintains a constant friction torque of 1.5 to 2 mdaN (1.5 to 2 Nm) irrespective of temperature, and manages the electric power of the driving motor so as to prevent a counter-rotation which is repelled when switching is completed.

In general, when the base rail is not moving, it spreads 1 mm.

Therefore, the present invention assumes that the overload reference is equal to or greater than 100 kgf at a distance of 1 mm when the base rail is not moving.

In the case of the drive motor 10 of the MJ81-type line-switching device according to the present invention, the operation current is 220 V: 4 A, 380 V: 1.5 A, the switching power is 200 kg to 400 kg, and the switching time is 5 sec.

The load measuring unit 210 according to the present invention capable of measuring the switching force does not measure the force applied to the tongue rail at the time of switching but is attached at a predetermined position to measure the adhesion force after completion of movement of the tongue rail.

In other words, when switching the tongue rail of the magnetic clutch for the line converter, the adhesion force pushing the tongue rail to the basic rail is measured, so that the load measuring part 210 keeps the pressure of not less than 100 kgf when the tip of the tongue rail is opened by 1 mm , And the measurement range is limited to 0 to 300 kgf.

Alternatively, if measuring manually, place the measuring terminal between the tongue rail and the base rail that has been tightened and read the scale of the measuring gauge when the tip of the tongue rail reaches 1mm by turning the pressure handles.

On the other hand, the information detected by the load measuring unit 210 and the reverse rotation sensing unit 220 is stored in a database, and based on this information, the TPR 240 controls the maximum output value of the drive motor 10 in a multi- And controls the input power source or the motor speed to a constant level according to the temperature at the time when the shaft rotation is completed or the time when the rotation of the main rotation shaft is completed according to the driving of the driving motor according to the driving of the driving motor 10 according to the temperature.

Accordingly, the present invention maintains a constant friction torque of 1.5 to 2 mdaN (1.5 to 2 Nm) irrespective of the temperature, and prevents the reverse rotation that is repelled when the switching is completed.

For example, the TPR 240 controls the motor speed based on the input power of the driving motor 10 to a constant level so as to maintain a constant friction torque of 1.5 to 2 mdaN (1.5 to 2 Nm) regardless of the temperature for a predetermined time.

According to the present invention, proportional, differential, and integral (PID) calculations are performed according to a control deviation between a signal output for driving the drive motor 10 and a value obtained by digitally converting the output signal, and a control signal is output And controls the drive motor 10 to control the drive motor 10 in a low load mode in which the drive motor 10 is intermittently operated for a predetermined period of time when an overload occurs in the drive motor 10 or the magnetic clutch is counter- And a PLC control unit 230 for controlling the PLC.

The control operation of the PID central control unit 251 according to the present invention controls the target value of the last data held within a predetermined range. If it is determined that the target data is not held within the predetermined range, .

To this end, the present invention collects data for analysis and processing and makes a database, and determines the optimum power supply of the electromagnet 52 quickly without requiring a repeated process for processing through the database information.

The optimal power supply of the electromagnet 52 for operating the magnetic clutch for the line converter can be determined through PID control through the PID central control unit 251 based on the database.

The PID central control unit 251 controls the power of the drive motor 10 so that the rotation speed of the drive motor 10 is gradually reduced for a predetermined period of time around the time when the operation of the magnetic clutch for the line converter is completed, The power of the driving motor 10 is gradually turned on in a phase control manner for a predetermined time after a predetermined time so that the driving motor 10 is fully preheated and the power is turned off after a predetermined time The drive motor 10 is slowly turned on / off by a predetermined time before or after the completion of the operation of the magnetic clutch for the line converter according to the phase control method, thereby driving the drive motor 10 in accordance with the change characteristics of the friction torque according to the temperature Thereby changing the number of rotations of the motor 10.

Therefore, the present invention adjusts the separation distance as in the prior art because it adjusts the proportional, derivative, integral (PID) calculation, and TPR (Thyristor Power Regulator) without adjusting the magnitude of electromotive force induced by adjusting the separation distance as in the prior art. There is no need for a detailed additional configuration, thereby reducing manufacturing cost and increasing durability.

10: Driving motor
20: Reducer
300: Power supply
32: Brush
35: slip ring
40: 1st flywheel
42: Magnetic
44: first rotating shaft
50: second flywheel
52: conductor, electromagnet
54:
100: Line switch
120: Reducer
210: load measuring unit
220:
230: PLC control unit
240: TPR
251: PID central control unit

Claims (5)

A housing having a receiving space formed therein; A line switching module provided outside the housing for switching lines; A driving motor provided in the accommodation space; A first flywheel connected to the driving motor by a first rotating shaft and rotated along with driving of the driving motor, and having a magnet around the rotating shaft; A second flywheel connected to the first flywheel via a second rotation shaft, and a second flywheel disposed between the first flywheel and the second flywheel, And a second flywheel for driving the line switching module, the magnetic switching clutch comprising:
A load measuring unit that measures and manages a load in real time so as not to overload the magnetic clutch when the operation of the drive motor is not performed or the operation is interrupted;
A reverse rotation sensing unit that maintains a constant frictional torque regardless of temperature and controls power of the driving motor so as to prevent reverse rotation at the end of switching;
Differentiating and integrating operations according to a control deviation from a value obtained by feedback and digital conversion of a signal outputted for driving the driving motor and controlling the driving motor by outputting a control signal through calculation, And a PLC control unit in which a low load mode in which the drive motor is intermittently operated for a predetermined time is activated when the motor or the magnetic clutch is overloaded or reversely rotated,
Wherein a slip ring and a brush are provided around the one end of the rotary shaft, the power of the power transmitted through the brush is transmitted to the slip And the second flywheel is supplied to the electromagnet of the second flywheel through a ring. The method according to claim 1,
Wherein the reverse rotation sensing unit maintains a constant frictional torque of 1.5 to 2 mdaN irrespective of the temperature and maintains a switching force of 200 kg to 400 kg and a switching time of 5 sec. The method according to claim 1,
In order to limit the maximum output value of the drive motor in multiple steps, the drive motor may be driven to rotate at a time point when the axis rotation is completed or when the rotation of the main rotation axis is completed, And a TPR (Thyristor Power Regulator) for controlling the speed of the magnetic clutch at a constant level. delete delete

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