JP3848900B2 - Electric turning machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric switch that converts a tongler of a turnout of a track on which a train travels between a fixed position and an inverted position.
[0002]
[Prior art]
Conventionally, this type of electric switch is, for example, a motor as shown on pages 128-141 of July 17, 1991, published “Signal” (Issuing Co., Ltd. The power of the (electric motor) is transmitted to the conversion gear via the reduction gear mechanism, and the conversion roller provided in the conversion gear is engaged with the cam groove portion of the operation. Therefore, when the conversion roller rotates, the tongrel can be converted into a fixed position and an inverted position. Further, since the cam member is configured to be interlocked when the conversion roller rotates, when the lock piece attached to the cam member is engaged with the lock cane, It is configured so that the tong rail can be constrained to a fixed position and an inverted position so that it cannot be converted.
[0003]
[Problems to be solved by the invention]
However, the above-mentioned conventional electric switch requires a reduction gear mechanism composed of a multi-stage spur gear and a large conversion gear, and further, since the conversion mechanism of the lock can not be reduced in size, the overall size is increased. In addition, the mass has increased, and there has been a drawback that a great deal of labor is required for transportation and installation work of the electric switch.
[0004]
In order to solve such a problem, an electric switch using a linear drive source that linearly drives such as a ball screw or a cylinder that does not require a conversion gear has also been proposed (for example, JP-A-7-10001, etc.). However, the conversion lock mechanism of the electric switch using the direct-acting drive source according to this proposal stops the operation lever while receiving the reaction force from the tongler of the branching device at the start and end of the stroke, and Since it is difficult to unlock or lock by driving the lock piece in the held state, there is a drawback that a new problem such as the need for an escape clamp or the like outside occurs. .
[0005]
Accordingly, the present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide an electric switch that is reduced in size and weight and does not require a special device outside.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the electric switch according to the present invention is moved according to the operation of switching the tongler of the branching device and the conversion of the tongler. A locking plate, a drive plate that is moved by a drive source that moves linearly, a linear moving unit that is in the same direction as the moving direction of the drive plate, and both ends of the linear moving unit, and the linear moving unit A fixed cam groove having a pair of escape portions in a direction orthogonal to the direction of the direction, one end of which is rotatably supported by the drive plate, and the other end is inserted into the fixed cam groove and provided in the operating rod. A pair of conversion arms inserted into the guide groove and provided to face each other in the direction of movement of the drive plate, and the pair of conversion arms are provided on the drive plate while moving the escape portion of the fixed groove. Cam It is characterized with the lock piece to lock the locking cans by moving, in that it consists of a.
The electric switch according to claim 2 of the present invention is characterized in that the drive source that moves linearly is a ball screw mechanism.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a plan view of an electric switch according to an embodiment with a cover removed from the housing, and FIG. 1B is a cross-sectional view taken along line AA of FIG. It is.
[0008]
The casing (case) 1 is made of cast iron with a rectangular bottom and an upper opening, and the upper opening of the casing 1 is configured to be covered with a lid member (cover) via a packing (not shown). Has been. And in this housing | casing 1, the ball screw mechanism 3 is provided through the reduction gear mechanism 2 which consists of the motor (electric motor) M and the two-stage type spur gear 2a, 2b which decelerates the rotation speed of the motor M. ing. The ball screw mechanism 3 is composed of a screw portion 3a in the same direction as an extension direction (longitudinal direction) of an operation can be described later, and a nut portion 3b that is screwed into the screw portion 3a.
[0009]
In the figure, reference numeral 4 denotes a drive plate which is connected (fixed) to the nut portion 3b of the ball screw mechanism 3 and extends in the same direction as the extension direction (longitudinal direction) of the screw portion 3a of the ball screw mechanism 3. It has been. Therefore, when the nut portion 3b moves in the longitudinal direction of the screw portion 3a by the rotation of the screw portion 3a of the ball screw mechanism 3, the drive plate 4 moves in the same direction as the longitudinal direction of the screw portion 3a. Can do.
[0010]
In the figure, reference numeral 5 denotes an operation mechanism, which is provided in parallel with the drive plate 4. That is, the operation can 5 is provided in the same direction as the extension direction of the drive plate 4 and slidably penetrating the housing 1. One end side (left side in the illustrated example) of the operation can 5 is connected to a tongler of a branching device via a coupling fitting (not shown).
[0011]
The operation can 5 and the drive plate 4 are configured to be indirectly connected via a pair of conversion arms 6a and 6b. That is, one end of the pair of conversion arms 6a and 6b is pivotally supported on the drive plate 4 by the support shafts 7a and 7b, and the conversion rollers 8a and 8b are rotatably provided at the other ends. . These conversion rollers 8 a and 8 b are slidably inserted into guide grooves 5 a provided in the operation can 5. The other ends of the conversion arms 6a and 6b are provided with conversion rollers 8a 'and 8b' which are paired with the conversion rollers 8a and 8b, respectively, and are slidably inserted into the fixed cam groove 9. .
[0012]
The fixed cam groove 9 is provided on the inner bottom surface of the housing 1, has a groove width that allows the conversion rollers 8 a ′ and 8 b ′ to move in a horizontal state, and linearly moves in the same direction as the driving plate 4. A pair of escape portions 9a, 9b in a direction orthogonal to the linear moving portion 9 'are provided on both ends of the portion 9' and the linear moving portion 9 '.
[0013]
Therefore, when the nut portion 3b moves along the longitudinal direction of the screw portion 3a by the rotation of the screw portion 3a of the ball screw mechanism 3, the drive plate 4 fixed to the nut portion 3b is moved. When the drive plate 4 is moved in one direction (right side in FIG. 1A), the conversion arm 6a moves the operating can 5 in one direction via the conversion roller 8a on one side. Further, when the drive plate 4 is moved in the other direction (leftward in FIG. 1A), the conversion arm 6b moves the operating can 5 in the other direction via the other conversion roller 8b. In this way, the operation can 5 is moved to the left and right by the conversion arms 8a and 8b. While the conversion rollers 8a 'and 8b' of the conversion arm move on the escape surfaces 9a and 9b, the operation can 5 is moved. Is not moved. The movement of the drive plate 4 is continued even while the operation lever 5 does not move.
[0014]
In the figure, reference numerals 10a and 10b denote a pair of lock pieces which are provided so as to be orthogonal to the longitudinal direction of the drive plate 4, and are always provided at the tips of the lock pieces 10a and 10b (not shown in FIG. The rollers 11a and 11b provided on the lower end are provided so as to be movable so as to contact the drive plate 4 (see arrows provided on the lock pieces 10a and 10b). The lock pieces 10a and 10b are provided with a guide mechanism so as to be movable only in the longitudinal direction (direction orthogonal to the longitudinal direction of the drive plate 4). Here, the guide mechanism simplifies the drawing. Omitted for.
[0015]
When the rollers 11a and 11b provided at the distal ends of the pair of lock pieces 10a and 10b are inserted into the pair of recesses 12a and 12b provided on both sides in the longitudinal direction of the drive plate 4, a locking lock described later is used. It is configured so that it can be locked. That is, since the lock cane 13 is provided movably through the housing 1 at a position orthogonal to the longitudinal direction of the pair of lock pieces 11a, 11b, either one of the lock pieces 10a, 10b is driven. When inserted into the recesses 12a and 12b provided on the plate 4, the lock can 13 is prevented from moving.
[0016]
The lock mechanism of the lock pieces 10a and 10b and the lock cane 13 is the same as the lock mechanism of the well-known electric switch and the notch not shown in the figure. When convex portions (not shown) of the lock pieces 10a and 10b are inserted into the grooves, the lock canister 13 is prohibited from moving in the longitudinal direction.
[0017]
One end side (the left end side in the illustrated example) of the lock cane 13 is connected to the tip of the Tongleil via a connection fitting (not shown). Therefore, when the tongrel is moved by the above-mentioned operation can 5, the lock can 13 is also moved along with the movement.
[0018]
Hereinafter, the operation of the electric switch having the above configuration will be described with reference to FIGS. 1 (a), 2, 3, and 4. FIG. In the state of FIG. 1A, the description will be made assuming that the tongrel moves from the normal position to the inverted position and is in the middle. In the middle of this movement, the rollers 11a and 11b of the lock pieces 10a and 10b are not inserted into the recesses 12a and 12b of the drive plate 4, so that the lock can 13 is locked by the lock pieces 10a and 10b. Not in a state.
[0019]
FIG. 2 shows a state in which the ball screw mechanism 3 moves the drive plate 4 further to the reverse side by the motor M to convert the tongrel to the reverse position. At this time, the conversion roller 8b ' It has reached the escape surface 9 b of the groove 9. FIG. 3 shows a state where the drive plate 4 has further advanced to the reverse side. In this state, the conversion roller 8b 'moves the escape portion 9b. While the escape portion 9b is moved, the operation lever 5 is not moved, but the conversion roller 8b' is driven while the escape roller 9b is moving. Since the plate 4 moves, the lock piece 10a is moved by the recess 12a, whereby the lock cane 13 is locked by the lock piece 10a. Therefore, the tongrel is in a locked state. In this inverted position, an operator (not shown) provided on the lock piece 10a turns on a switch (not shown) and the switch signal is input to a controller (not shown). The rotation is stopped.
[0020]
The above description is an explanation when the Tongleil changes from the stereotaxic position to the inverted position, but the conversion of the Tongleil from the inverted position to the localized position is performed by an operation reverse to the above. FIG. 4 shows a state in which the tongrel is moved from the inverted position to the localized position. While the conversion roller 8b 'at the beginning of the conversion from the reverse position to the fixed position moves the escape portion 9b, the operation lever 5 does not move, and only the drive plate 4 moves. During this time, the lock piece 10a is lifted from the recess 12a, so that the lock of the lock cane 13 by the lock piece 10a is unlocked and the movement of the tongrel becomes free. Therefore, the movement can 5 can be moved, and the movement can 5 is moved to the localization side while the two conversion rollers 8a 'and 8b' move along the linear moving portion 9 '. The operation in which the lock piece 10b is inserted into the recess 12b of the drive plate 4 and the lock piece 10b locks the lock cane 13 is performed in the same manner as when the lock piece 10a locks the lock cane 13 described above. .
[0021]
In the above example, the ball screw mechanism 3 is used for the movement of the drive plate 4. However, a mechanism using a rack and a pinion, or another linear motion mechanism such as a hydraulic or air cylinder mechanism may be used. However, when the ball screw mechanism 3 is used as described above, the effect that the number of gears of the reduction gear mechanism 4 can be reduced is obtained.
[0022]
【The invention's effect】
According to a first aspect of the present invention, there is provided an electric switch according to the first aspect of the present invention, an operation mechanism for switching a tongler of a branching device, a lock canister that is moved in accordance with the conversion of the tongrel, and a drive that moves linearly. A drive plate moved by a source, a linear moving portion in the same direction as the moving direction of the drive plate, and a pair of escape portions in both directions of the linear moving portion and in a direction orthogonal to the direction of the linear moving portion A fixed cam groove having one end rotatably supported by the drive plate, and the other end inserted into the fixed cam groove and inserted into a guide groove provided in the operation plate. A pair of conversion arms provided so as to face each other in a direction, and while the pair of conversion arms move through the escape portion of the fixed groove, the pair of conversion arms are moved by a cam surface provided in the drive plate and Lock Since consisting of Kkupisu, can be reduced in size and weight, moreover, there is a feature that does not require an external device such as an escape clamp.
In the electric switch according to claim 2 of the present invention, since the drive source that moves linearly is a ball screw mechanism, it can be a simpler mechanism.
[Brief description of the drawings]
FIG. 1A is a plan view of a state in which a lid member of an electric switch according to an embodiment is removed, and FIG. 1B is a sectional view taken along line AA in FIG.
FIG. 2 is an explanatory diagram illustrating an operation state.
FIG. 3 is an explanatory diagram for explaining an operation state;
FIG. 4 is an explanatory diagram illustrating an operation state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Reduction gear mechanism 3 Ball screw mechanism 3a Screw part 3b Nut part 4 Drive plate 5 Operation can 6a, 6b Conversion arm 7a, 7b Support shaft 8a, 8b Conversion roller 9 Fixed cam groove 9 'Linear movement part 9a, 9b Escape portion 10a, 10b Lock piece 11a, 11b Roller 12a, 12b Recess (cam surface)
13 Chain lock

Claims (2)

To change the tongler of the turnout,
A locking canister that is moved along with the conversion of the Tongrel,
A drive plate that is moved by a drive source that moves linearly;
A fixed cam groove having a linear moving portion in the same direction as the moving direction of the drive plate and a pair of escape portions on both ends of the linear moving portion and in a direction perpendicular to the direction of the linear moving portion;
One end is rotatably supported by the drive plate, and the other end is inserted into the fixed cam groove and is inserted into a guide groove provided in the operation plate so that the drive plates face each other in the moving direction. A pair of conversion arms provided;
While the pair of conversion arms move along the escape portion of the fixed groove, a lock piece that moves by a cam surface provided on the drive plate and locks the locking cane,
An electrical tipping machine characterized by comprising: 2. The electric switch according to claim 1, wherein the drive source that moves linearly is a ball screw mechanism.

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