JPH0771936B2 - Electric switch and switch controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to converting a tongue rail between a localization position and an inversion position at a branching device of a line, and an operation for performing a conversion operation by connecting to the tongue rail. An electric switchgear comprising a can and a lock can arranged in parallel with the operating can for restraining the tongue rail, a drive mechanism for the converting motion, and a converting mechanism for the operating can. The present invention relates to a roll control device for an electric roll machine.

"Prior Art" In the conventional electric switching machine, it is general that a buffer clutch is provided in the middle of the system of the drive mechanism for switching the operating rod.

This clutch prevents the electric motor from burning due to an excessive load applied to the electric motor, which is interrupted during operation and slips when the operating rod stops despite being driven. This is for buffering.

"Problems to be solved by the invention" However, in a conventional electric turning machine equipped with a clutch, in order to stabilize the slipping action of the clutch, for example, the friction plate and the enclosed grease are regularly inspected about twice a year. It has to be adjusted, and further, it requires periodical replacement of the friction plates and replacement of grease in the long term, which is not only complicated but also requires manual labor to increase the maintenance cost.

The present invention has been made in view of such conventional problems, and an object thereof is to provide an electric switching machine and a rolling control device that operate quickly and reliably and are easy to maintain. .

[Means for Solving the Problem] The gist of the present invention for achieving such an object is to convert a tongue rail into a localization and an inversion with a turnout of one line. A connecting mechanism (30) for connecting and performing a converting operation, and a locking lock (50) arranged in parallel with the operating cylinder (30) for restraining the tongue rail, and a drive mechanism (12) for the converting operation. And an electric switching machine comprising a switching mechanism (35) for the operating rod (30), in which the drive mechanism (12) for the operating rod (30) is pivotally supported by a casing of the switching device. The conversion gear (20) is driven to rotate by a motor (M), and fitted to the conversion gear (20) via a buffer mechanism (21) including a spring member (22) arranged so as to intervene in the rotation direction, And a conversion plate (25) pivotally supported on the rolling machine case. The mechanism (35) is linearly slidably supported by a conversion roller (27) provided on the conversion plate (25) and the operating machine (30) in a case of a rolling machine. ), And a conversion cam groove (37) formed in the conversion cam plate (36) and fitted to convert the rotational motion of the conversion roller (27) into a linear motion. An electric switching machine comprising:

2. The rolling control device for an electric rolling machine according to Item 1, wherein the electric motor (M) for performing a switching operation is a brushless type that operates by a three-phase current, and the electric motor (M) is driven. The motor drive section (62) has a motor drive section (62) and a tip control section (63) for controlling the motor drive section (62), and the motor drive section (62) receives an instruction from the tip control section (63). A rolling control device characterized in that the electric power supply to the electric motor (M) is cut off in response to the completion of the conversion of the operation rod (30) while the power supply line is short-circuited to perform dynamic braking.

3. The rolling control device for an electric rolling machine according to Item 1, wherein the electric motor (M) for performing a conversion operation is a brushless type that operates by a three-phase current, and the electric motor (M) is driven. It has a motor drive section (62) and a rolling control section (63) for controlling the motor drive section (62), and the operation rod (30) is When stopped and the drive current increases, the motor drive unit (62) instructed by the roll control unit (63) uses the pulse width modulation method to drive the electric motor (M).
The present invention relates to a rolling controller for an electric switching machine, characterized in that it is configured so as to limit a current supplied to the motor to limit torque.

"Operation" For the conversion operation, when the conversion gear is rotationally driven by the electric motor, the conversion plate rotationally displaces via the buffer mechanism by the conversion gear, and the lock can is unlocked first. When the conversion gear further rotates, the conversion roller engages with the conversion cam groove and is displaced, whereby the conversion cam plate is linearly displaced, and the operating rod is driven to convert the tongue rail.

Even after the conversion of the tongue rails is completed, the conversion plate rotates, and the lock can is locked to complete the conversion operation.

In the case of shifting in the reverse direction, the operation starts from the displacement of the other locking link member following the reverse activation of the shifting gear and the shifting roller, and shifts in the reverse order.

The motor drive unit, which receives the instruction from the roll control unit during the conversion operation, cuts off the power supply to the brushless type electric motor that operates by the three-phase current in response to the completion of the conversion of the operation rod, and further supplies the power to the electric motor. Short the wires and perform dynamic braking,
Relieves inertial force and stops without impact.

If a stone is caught between the tongue rail and the main rail, and if the operation bar is interrupted while it is still driving, it will be caught between the conversion gear and the conversion plate. The intervening spring member of the buffer mechanism bends to absorb the shock.

Furthermore, the motor drive unit that received the instruction from the rolling control unit
The electric current supplied to the electric motor is controlled by the pulse width modulation method, and the torque is limited to prevent the overcurrent from flowing to the electric motor until the load is stopped when the load is excessive.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention.

As shown in FIG. 6, the electric switch 10 has a line branching device P.
It is set up next to. The branching device P includes a main rail R and a tongue rail T that can be converted.

The electric turning machine 10 includes a moving can 30 that is connected to the tongue rail T to perform a conversion operation, and a lock can 50 that is installed in parallel with the moving can 30 and that restrains the tongue rail T. Case
11 is slidably supported and provided.

As shown in FIG. 1 to FIG. 3, in the electric turning machine 10, an electric motor M is attached to one end of a turning machine case 11, and the output of the electric motor M operates via a drive mechanism 12. It is configured to act on 30.

The electric motor M is a brushless type that operates with a three-phase current, and the drive mechanism 12 reduces the rotational speed of the output shaft M1 of the electric motor M, and includes the following gear system.

An output gear 13 is fixedly mounted on an output shaft M1 of the electric motor M, and a first stage large gear 14a of a first stage reduction gear 14 is meshed with the output gear 13. The second stage large gear 15a of the second stage reduction gear 15 meshes with the first stage small gear 14b of the first stage reduction gear 14,
The second stage small gear 15b of the stage reduction gear 15 is meshed with the conversion gear 20.

The conversion gear 20 serves as a driving member of a conversion mechanism 35 for converting the operating rod 30, and a conversion plate 25 constituting the conversion mechanism 35 is fitted to the conversion gear 20 via a buffer mechanism 21.

As can be seen from FIG. 4, the buffer mechanism 21 has the following structure.

In the spring member 22 having a buffering action, a coil spring 22a is interposed on the telescopic rod 23, and the end portions 23a and 23b of the telescopic rod 23 are biased by the coil spring 22a.

In the conversion plate 25, holding claws 26a to 26d are provided inside, and spring members 22 and 22 are held between the holding claws 26a and 26b and between the holding claws 26c and 26d, respectively. The ends 23a and 23b of the telescopic rod 23 are elastically engaged with the holding claws 26a to 26d.

The conversion gear 20 is also provided with holding claws 24a to 24d therein, and between the holding claws 24a and 24b and between the holding claws 24c and 24d respectively hold the spring member 22, and the spring member 22 is changed. It is held by being engaged with both the gear 20 and the conversion plate 25.

The conversion mechanism 35 is linearly slidably supported by the conversion plate 25, which is rotationally driven by the conversion gear 20 of the drive mechanism 12 using the electric motor M as a drive source via the drive mechanism 12, and the rolling machine case 11. And a conversion cam plate 36.

A conversion roller 27 is mounted on the conversion plate 25, and a conversion cam groove 37 into which the conversion roller 27 is fitted is formed on the conversion cam plate 36. Operating rods 30, 30 are integrally provided at both ends of the conversion cam plate 36.

A conversion restraint mechanism 40 of the lock can 50 is provided so as to be synchronized with the rotation of the conversion plate 25.

The conversion restraint mechanism 40 of the lock can 50 includes the conversion plate 25
And a pair of lock peaks 45, 45 which are locked or unlocked by being engaged with and disengaged from the lock can 50 following the rotation of the conversion plate 25.

The outer periphery of the conversion plate 25 has an uneven cam guide surface 28. As can be seen in FIG. 4, the cam guide surface 28 is an unlock surface 28a,
Locking surface 28b, the transition portion 28c of the boundary between the unlocking surface 28a and the locking surface 28b,
It is composed of 28c. The conversion unit 28c is a conversion plate
It is an inclined surface that can rotate 25 small angles.

The lock piece 45 is slidably supported by the rolling machine case 11 so as to be orthogonal to the lock lock 50, and is provided with a conversion plate.
A lock having a driven roller 46 fitted to the cam guide surface 28 of 25 at the base end, which moves forward and backward according to the rotation of the conversion plate 25, and is engaged with and disengaged from the lock notch 51 of the lock can 50. It has an end 47 at the tip.

Engaging end 45a protruding from lock piece 45 and rolling machine case 1
An urging spring 48 for urging the lock piece 45 in the locking direction is stretched between the part and the part of 1.

Further, check blocks 43 are provided on the lock pieces 45 and 45, respectively.
a and 43b are provided, and detection rods 44a and 44b of the sensor unit 44 can be engaged with the inspection blocks 43a and 43b.

As shown in FIG. 5, the rolling control device 60 that controls the operation of the electric switching machine 10 receives the electric power from the motor power supply unit 61 and drives the electric motor M and the motor driving unit 62. And a rolling control unit 63 for controlling the unit 62.

The switch controller 60 includes a sensor unit 44 of the electric switch machine 10.
A sensor input unit 64 that receives operation information detected by
A transmission unit 65 for transmitting external information is provided to the rolling control unit 63.

The motor drive unit 62 is configured to receive an instruction from the rolling control unit 63, cut off the power supply to the electric motor M in response to the completion of the shift of the operation rod 30, and short-circuit the power supply line to perform dynamic braking. There is.

Further, when the operation rod 30 is stopped and the driving current is increased even though it is being driven due to an intervening disturbance, the motor driving unit 62, which receives the instruction from the rolling control unit 63, uses the pulse width modulation method. Is configured to control the current passed through the electric motor M to limit the torque.

Next, the operation will be described.

FIG. 1 shows, for example, a locked state in which the locked roller 45 of one of the lock pieces 45 has a driven roller 46 that is depressed to a lock surface 28b of a cam guide surface 28 of the conversion plate 25, and The locking end 47 engages with the locking notch 51 of the locking lock 50 to lock the locking lock 50.

When the electric motor M is started for conversion operation, the output shaft M1
Output gear 13, first stage large gear 14a of first stage reduction gear 14, first stage small gear 14b, second stage large gear 15a of second stage reduction gear 15, drive mechanism 12 leading to second small gear 15b Thus, the conversion gear 20 is rotationally driven.

In a normal conversion operation, the spring member 22 of the buffer mechanism 21 does not bend, and the conversion gear 20 and the conversion plate 25 are rotationally displaced. When the conversion plate 25 rotates a little, the driven roller 46 of the one lock piece 45 in the locked state engages with the locking conversion portion 28c of the cam guide surface 28 and rides on the unlocking surface 28a,
The lock piece 45 makes a large sliding displacement in the unlocking direction.

The lock piece 45 moves toward the base end side in the vertical direction against the urging force of the urging spring 48, and the locking end 47 of the lock piece 45 is the locking notch of the locking can 50.
It disengages from 51, the lock can 50 is unlocked, and the motion can 30 becomes movable.

When the conversion plate 25 further rotates, the operation roller 30 is driven by the conversion roller 27 and the conversion cam groove 37, and the tongue rail T is converted to the inverted position.

When the conversion of the tongue rail T is completed, the driven roller 46 of the other lock piece 45 engages with the corresponding locking conversion portion 28c of the cam guide surface 28 and falls to the locking surface 28b, and the lock piece 45 is locked. Large displacement in the locking direction.

The lock piece 45 moves in the vertical direction by receiving the elastic force of the biasing spring 48, and the lock end 47 is fitted into the lock cutout 51 of the lock can 50 to be locked.

The operation state of the lock pieces 45, 45 during the conversion operation is detected by the sensor unit 44 by the detection blocks 44a, 43b being pushed and moved by the inspection blocks 43a, 43b. Lock piece
The movements of 45 and 45 represent the operating states of the operating can 30 and the locking can 50, and the sensor unit 44 controls the operating state of the operating can 30 and the locking can 50 via the sensor input unit 64. Based on the information from the sensor unit 44, which is transmitted to 63, the control unit 63 instructs the motor drive unit 62 based on the information from the sensor unit 44, and the motor drive unit 62
Upon completion of the conversion of the operating rod 30, the energization to the brushless type electric motor M which operates by the three-phase current is cut off, and the power supply line to the electric motor M is short-circuited to perform dynamic braking.

The inertia energy after the power supply to the electric motor M is cut off is
Since it is absorbed by the dynamic braking action of the electric motor M, the conversion gear 20 and the conversion plate 25 do not rotate excessively, and the conversion roller 27
Does not collide with the stop surface 36a of the conversion cam plate 36, and the electric tipping machine 10 stops.

If a stone is caught between the tongue rail T and the main rail R, and if the operation rod 30 is obstructed while it is being driven but stops during the conversion, the conversion plate 25
Since the conversion gear 20 tries to stop and the conversion gear 20 tries to rotate, the spring member 22 of the buffer mechanism 21 interposed therebetween is bent and the shock is absorbed.

That is, the spring members 22, 22 of the buffer mechanism 21 are the same as those of the conversion gear 20.
And the conversion plate 25 are engaged with each other and held, so that when the two try to rotate relative to each other due to intervening obstruction, the holding claws 26a to 26d of the conversion plate 25 and the conversion gear are held.
Opposing comrades of the 20 holding claws 24a to 24d try to come close to each other, the ends 23a and 23b of the telescopic rod 23 come close to each other, and the coil spring 22a is compressed to buffer the shock.

Further, the motor drive unit 62 controls the current supplied to the electric motor M by the pulse width modulation method, and when the load is excessive, torque is applied to prevent the overcurrent from flowing to the electric motor M until it stops. Make a limit.

In the case of switching in the reverse direction, the operation starts from the displacement of the other lock piece 45 following the reverse activation of the conversion plate 25 and the conversion roller 27, and the conversion is performed in the reverse order.

"Effects of the Invention" According to the electric rolling machine and the rolling control apparatus of the present invention, the clutch provided in the drive system is eliminated, and the shock or overload is electrically or mechanically buffered. Therefore, it is possible to make an electric switching machine with a simple structure, reliable operation, and almost no maintenance, and a rolling control device suitable for controlling such an electric switching machine. Can be provided.

[Brief description of drawings]

1 to 4 show an embodiment of an electric switching machine according to the present invention. FIG. 1 is an exploded perspective view of an essential part of the electric switching machine, and FIG. 2 is a top cover removed. The top view of the electric turning machine shown, FIG. 3 is a longitudinal sectional view of the electric turning machine, FIG. 4 is an exploded perspective view showing the vicinity of the buffer mechanism, and FIG. FIG. 6 is a block diagram showing an example, and FIG. 6 is a plan view showing a branching device and its vicinity. P: turnout device, R: main rail T: tongue rail, M: electric motor 10: electric rolling machine, 20: conversion gear, 21: buffer mechanism, 22: spring member 22a. Coil spring, 25 …… Conversion plate 35 …… Conversion mechanism, 36 …… Conversion cam plate 40 …… Conversion restraint mechanism, 44 …… Sensor unit 45 …… Lock piece, 60 …… Rotating controller 61 …… Motor Power supply unit, 62 ... Motor drive unit 63 ... Rotation control unit, 64 ... Sensor input unit 65 ... Transmission unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minor Tadokoro 1 29-29 Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa 1 Kyosan Manufacturing Co., Ltd. (72) Inventor Katsuyoshi Otokawa Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa 2-29-1 Kyosan Manufacturing Co., Ltd. (72) Inventor Kanzo Seki 2-29-1 Kyosan Manufacturing Co., Ltd., Heian-cho, Tsurumi-ku, Yokohama, Kanagawa Prefecture (72) Inventor Koshiro Iino Saitama 1-13-8 Kamikizaki, Urawa-shi Nippon Signal Co., Ltd. inside Yono Factory (72) Inventor Yoshifumi Kikuchi 1-1-13-8 Kamikizaki, Urawa-shi, Saitama Nippon Signal Co., Ltd. inside Yono Factory

Claims (3)

[Claims] Claim: What is claimed is: 1. A tongue rail is converted into a normal position and an inversion position by a branching device of a line.
And a lock can (50) for restraining the tongue rail, and a drive mechanism (12) for conversion motion and a conversion mechanism (35) for the motion motion (30). In the lever, the drive mechanism (12) of the operating rod (30) is rotatably supported by a case of the rolling machine and intervenes in the rotational direction with a conversion gear (20) which is rotationally driven by an electric motor (M). And a conversion plate (25) pivotally supported by the case of the rolling machine, which is fitted to the conversion gear (20) through a buffer mechanism (21) by a spring member (22). The conversion mechanism (35) is linearly slidably supported by a conversion roller (27) provided on the conversion plate (25) and the operation machine (30) in a case of a rolling machine. A conversion cam plate (36) for converting the can (30), and the conversion roller (27) formed on the conversion cam plate (36). ), And a switching cam groove (37) which is fitted so as to convert the rotary motion of the above into a linear motion. 2. A rolling control device for an electric switching machine according to claim 1, wherein said electric motor (M) for performing a conversion operation is a brushless type which operates by a three-phase current, said electric motor ( M) having a motor drive unit (62) for driving the motor drive unit and a roll control unit (63) for controlling the motor drive unit (62), and the motor drive receiving an instruction from the roll control unit (63). The part (62) is configured to cut off the power supply to the electric motor (M) in response to the completion of the conversion of the operating rod (30) while short-circuiting the power supply line to perform dynamic braking. Tetsu control device. 3. The rolling control device for an electric switching machine according to claim 1, wherein the electric motor (M) for performing a switching operation is a brushless type operating with a three-phase current, M) has a motor drive unit (62) and a motor control unit (63) for controlling the motor drive unit (62), and the operation is performed even if it is driven while being interrupted on the way. When the can (30) stops and the drive current increases, the motor drive section (62) which receives the instruction from the rolling control section (63) uses the pulse width modulation method to drive the electric motor (M).
A rolling control device for an electric switching machine, characterized in that it is configured to control a current passed through the coil to limit a torque.