JP5703001B2 - Electric switch mechanism of electric switch - Google Patents

Description

  The present invention relates to an operation switch mechanism of an electric switch having an indexing function using a conversion lock device, for example, a YS type electric switch.

  The YS type electric switch is an electric switch that is used in combination with a conversion lock (YS type) and a circuit controller (YS type) and is used for conversion of points other than the main line. Backward indexing is possible. In the YS type electric turning machine, the electric turning machine is a conversion device, and includes a conversion mechanism, a speed reduction mechanism, and an induction motor. Further, the convertible lock device (YS type) is a lock device, and the circuit controller (YS type) is a close-contact checking device.

  The structure of the conversion mechanism incorporated in the conventional YS type electric switch is as follows. That is, the rotation of the induction motor is decelerated by the reduction mechanism, and the conversion mechanism is driven by the rotational force, but the conversion roller 42 is fixed to the conversion gear 41 which is the final stage of the reduction mechanism. As shown in FIG. 9A, the conversion roller 42 rotates integrally with the rotation of the conversion gear 41. When the conversion roller 42 rotates by a certain angle, the conversion crank 43 is rotated integrally as shown in FIG. The rotational displacement of the crank 43 at 60 ° is transmitted to the crank of the conversion lock and the point is changed, and when the cam 44 is rotated by 60 ° as shown in FIG. The conversion roller 42 is disengaged from the inside of the groove, and the rotational displacement of 60 ° of the conversion crank 43 is transmitted to the crank of the conversion lock device through an operation lever to change the point (non-patent) Reference 1 See 2).

  When the conversion roller 42 is completely removed from the groove of the cam 44 and the conversion is completed, the conversion roller 42 is stopped by the braking mechanism. Therefore, since the conversion crank 43 is completely free from the force from the point, the conversion gear 41 is changed regardless of the conversion gear 41 together with the cam 44 at the time of indexing. Thus, after the point conversion is completed, the conversion roller 42 is completely free from the cam groove of the conversion crank 43 in preparation for backward indexing, but the conversion roller 42 is in a free state. When the conversion crank 43 is not in the fixed position after the indexing, that is, when the conversion crank 43 is in the middle of the conversion after the indexing, the conversion crank is either manual or electric. There is a problem that 43 cannot be returned to the normal state.

In such a case, conventionally, the conversion crank 43 has been returned to the normal state by unavoidably returning the tongrel to a normal position using a bar or the like. Although it has been acknowledged that there has been an attempt to reduce the size and weight of the electric switch used for the main line (see Patent Documents 1 and 2), the backward indexing function used for other than the main line With regard to the electric switch that we have, we have never noticed the problem when the Tongrel is indexed backwards. In order to solve such a problem, as one attempt, after the point conversion is completed, it is possible to perform the indexing with the motion can be free, and after the indexing, the motion can be located at an arbitrary position during the conversion. However, an apparatus that can automatically cope with the next conversion operation has been developed without requiring human intervention (see Patent Document 3).

  In FIG. 10, this apparatus basically has a combination of a conversion roller 35 and an operation canopy cam 34, and the conversion roller 35 is moved in a linear direction over a certain stroke range. The operation can cam 34 is attached to a part of the operation can 30 and receives the conversion roller 35 that has moved in the linear direction at the time of point conversion in the recess of the operation can cam 34 to operate. The can 30 is restrained to feed and move in the direction from the orientation to the inversion or from the inversion to the orientation.

  Then, after the reversal or orientation change, the conversion roller 35 releases the restraint of the motion can 30 and the motion can 30 can freely move in the axial direction, so that the tongler can be indexed backward. According to this mechanism, after the point conversion, the next operation can be performed without hindrance regardless of the position of the conversion roller that has been removed from the cam restraint. Can be improved and maintenance can be greatly reduced.

  By the way, since the YS type electric switch has been in production for a long period of time, it is time for further review of its production and assembly costs, reducing the mass of the electric switch and simplifying its structure. There is a request for improvement including easy assembly. Although the conversion mechanism described in Patent Document 3 is considerably simplified as a structure, the movement of the operation canister 30 from the orientation to the inversion, or the conversion operation from the inversion to the orientation, and the constraint release of the operation canister 30 after the inversion is released. The operation is characterized in that the spring force of the compression coil spring 31 and the spring 36 is used for the operation, and the stability of the operation depends solely on the performance of the spring. It is considered that there is room for improvement in that noise is generated by the repulsive action of the spring when the conversion roller is received.

Patent Publication 2001-163221 Patent Publication 2004-9873 Patent Publication 2008-239027

Japan Railroad Electrical Engineering Association "Tipper Device" May 10, 1992 P39-P47 Talking about the power switch, Signal Security Association of Japan 1969 P95-100

  The problem to be solved is that, with regard to the operation switching mechanism of the electric turning machine having the backward indexing function, the conventional operation switching mechanism is simplified by the structure described in Patent Document 3. Although there is room for further improvement with regard to stabilization of the conversion operation, mass reduction, simplification of the structure, and ease of assembly, the execution of the conversion function depends on the spring force. In some cases, noise is generated by the spring.

  The operation switching mechanism of the electric switch according to the present invention has a combination of an operation can drive crank and a guide, gives a linear feed to the operation can drive crank, and regulates the attitude of the operation can drive crank with the guide. However, the most important point is that the movement can be restrained in a constant posture while moving in the orientation direction and in the inversion direction, and after changing the orientation and inversion, the posture of the operation cannula drive crank is changed to release the restriction of the operation can. Features.

  The operation switching mechanism of the electric switch according to the present invention selects a position moving protrusion or a position moving protrusion formed according to the operation, and the selected protrusion is used as a crank conversion roller. The operation guide is moved from the fixed position to the inverted direction or from the inverted position to the fixed direction by guiding the crank conversion roller at the forward path guiding surface or the backward path guiding surface formed on the crank guide while pressing with Reduces the mass of the electric switch and simplifies the structure, and performs functions without depending on the spring force, so that no noise is generated and the operation is stabilized, further reducing the mass and simplifying the structure. It is possible to meet demands for ease of assembly and assembly.

  In addition, after the point conversion is completed, the posture of the crank is changed on the forward feed stop guide surface or the return feed stop guide surface formed on the crank guide, so that it can be moved from the positioning mover or the reverse mover. Because the movement roller is released by releasing the conversion roller, it is possible to determine the backward direction only by controlling the posture of the crank, and even if the position of the movement portion is shifted by the backward direction index of the train, At the time of the next conversion operation, adjustment is made naturally during the movement of the crank, and the operation can be returned to the normal position to perform the point conversion operation without any trouble.

(A) is a top view of the electric switch equipped with the operation switching mechanism of this invention, (b) is the same front view. (A) is a front view of the operation switching mechanism part by this invention, (b) is the xx line longitudinal cross-sectional view of (a). (A) is a partial front view of a drive shaft, (b) is the side view. (C) is a front view of an operation mechanism, (d) is a sectional view taken along the line dd of (c). (E) is a front view of an operating can drive crank, (f) is the side view. (G) is a front view of a crank guide, (h) is the hh sectional view taken on the line (g). (A)-(g) is a figure which shows in order the operation | movement at the time of the normal conversion from the inversion of a point to the localization. (A)-(g) is a figure which shows in order the operation | movement at the time of the normal conversion from the localization of a point to an inversion. (A) is a figure which shows the position of the motion cane in the localization of a point, (b) is a figure which shows the state which the position of the motion cane shifted by the back indexing in the localization of a point. (A)-(e) is a figure which shows the operation | movement which restores | restores the shift | offset | difference of the position of an operation cane by back indexing. (A)-(h) is a figure which shows in order the operation | movement of reverse rotation in the middle of an operation can. (A)-(c) is a figure which shows the structure of the conversion mechanism integrated in the conventional YS type electric switch. It is a figure which shows the structure of the operation switching mechanism described in patent document 3. FIG.

  Point conversion operation is performed, and after the conversion is completed, it is possible to determine the back of the train, and even if the back is indexed, even if the operation can shift to any position during conversion, it is corrected by the conversion operation of the next point A mechanism that uses a combination of an operating can drive crank and a crank guide to control the attitude of the operating can drive crank on the guide surface of the crank guide, and restricts and releases the operating can. Realized by adopting

(1) Relationship between an electric switch and a convertible lock device FIG. 1 is a diagram showing an installation example of an electric switch having a backward indexing function (hereinafter referred to as an electric switch) according to the present invention. It is. In FIG. 1, on a sorting line or a side line in a yard other than the main line, a convertible lock 3 is installed on the sleeper 2 between the rails 1 a and 1 b, and the sleeper 2 protrudes to one side of the rails 1 a and 1 b. At the overhanging portion, an electric switch 4 equipped with an operation switching mechanism according to the present invention is installed.

  The first crank 5a of the upper crank of the convertible lock 3 is connected to one Tongler 7a via the first link 6a, and the second crank 5b of the upper crank is connected to the other tongue via the second link 6b. It is connected to the rail 7b. Further, the lower crank 8 is the same as the prior art in that the lower crank 8 is connected to the operation lever 10 of the electric switch 4 via the offset link 9.

  The conversion force of the electric switch 4 that changes the point moves the operating can 10 forward and backward, and the movement of the operating can 10 turns the lower crank 8 of the convertible lock 3 via the offset link 9 to be coaxial. The first link 6a and the second link 6b of the upper crank are rotated left and right to drive the tongrels 7a and 7b.

(2) Configuration of the operation switching mechanism FIG. 2 shows a switching mechanism built in the body 4a of the electric switch. In FIG. 2, the conversion mechanism according to the present invention has an operating can drive crank 12 and a crank guide 13, and restrains and releases the operating can 10. The movement can 10 switches the point by moving the point from the normal position to the reverse position or vice versa by forward / backward movement in the forward / reverse direction, and switches the points 16a, 16b as restraining means. have.

  The restraining means is a portion that is formed on a part of the plate surface of the motion can 10 and hooks on the motion can drive crank 12. The operating can drive crank 12 is given a forward and reverse movement feed by driving the electric motor 14 provided in the electric switch, and is hooked by the restraining means to restrain the operating can 10 and reverse the point. It moves forward and backward from the stereotaxic direction or from the stereotaxic direction to the dislocation direction. The crank guide 13 controls the posture of the operation crank drive crank 12 and changes it into a posture for hooking the restraining means and a posture for releasing the restraining means.

  The posture of the operation can drive crank 12 is controlled by the guidance of the crank guide 13, and by performing forward or reverse movement feed while restraining the operation cannula 10, the position can be localized and inverted, and the localization can be performed. After the reversion, the restraint of the operating can 10 is released, and the train can be indexed backwards.

  The drive shaft 11 is, for example, a ball screw driven by an electric motor 14 installed outside the body 4a of the electric switch, and the rotation of the ball screw is performed as shown in FIGS. Thus, a nut to which linear feed in the forward and reverse directions is given is provided as the slider 11a.

  As will be described later, a feed roller 15 of an operation crank drive crank 12 is attached to the slider 11a. As shown in FIGS. 3 (c) and 3 (d), the motion can 10 is a plate having a rectangular cross section, and is arranged in parallel with the axis of the drive shaft 11. One end of the motion can 10 is shown in FIG. It is connected to the offset link 9 and rotates the lower crank 8 of the convertible lock 3 by moving forward and backward in the forward and reverse directions to change the tongue from the normal position to the reverse position or vice versa. As described above, the switching is performed.

  A pair of protrusions 16a and 16b are formed on one side (the rear side in the figure) as a restraining means provided in the operating can 10 at a certain interval, and are formed on one side or the other side and the surface direction ( Projections projecting toward the back). That is, the protrusion 16a protrudes from the one surface of the operation cannula 10 and the protrusion 16b extends from the other surface of the operation cannula 10 to the outside of the plate surface at a constant height, and extends to the longitudinal center line of the operation cannula. On the other hand, they protrude from opposite ends in opposite directions.

  The protrusion 16a is for moving in the forward path (from the reverse position to the localization direction), and the protrusion 16b is for moving in the backward path (from the localization to the reverse direction). The protrusions 16a and 16b are portions protruding on the plate surface as restraining means for hooking on the operation cannula drive crank 12, and by projecting on the movement line of the operation cannula drive crank 12, the conversion roller of the operation cannula drive crank 12 is provided. 18 can be easily captured, but is not necessarily limited to the protrusion as long as the same function can be executed as the restraining means.

  In the present invention, the “outward path” means, for example, a path in the forward direction from the inversion to the localization, and the “return path” means an inversion path from the localization to the inversion. The distinction between the forward path, the backward path, the forward direction, and the reverse direction is for convenience of explanation, and any direction from the reverse position to the localization and the localization position to the reverse direction may be the forward path, the backward path, the forward direction, or the reverse direction.

  As shown in FIGS. 3 (e) and 3 (f), the operation can drive crank 12 has a long hole 17 in one arm 12a having an L shape at an angle close to a right angle, and a conversion roller 18 in the other arm 12b. It is what has. A feed roller 15 of the slider 11 a is engaged in the elongated hole 17, and a conversion roller 18 is fitted in the frame of the crank guide 13. Note that a linear guide 23 is provided in the body 4 a of the electric switch 4 in parallel with the center line OO of the operating can 10. The linear guide 23 supports the operation crank 12 that moves in the forward and reverse directions and regulates the moving direction thereof. A table 24 is slidably held on the linear guide 23, and the table 24 is operated on the table 24. A support shaft 12c of the can drive crank 12 is supported so as to be able to rotate.

  The crank guide 13 has a substantially rectangular horizontally long frame shape. As shown in FIGS. 3G and 3H, the crank guide 13 has one end on one inner surface of the frame across the center line OO of the operation cannula 10. The forward feed guide surface 19 of the operating can 10 is linearly formed in the forward direction from the other end (right end in the figure) to the other end (right end), and the backward feed guide surface 20 is formed on the other inner surface of the frame from the right end to the left end. It is formed in a straight line in the opposite direction over a certain range.

  Further, a forward feed stop guide surface 21 is formed at the end of the forward feed guide surface 19 at a position further retracted in a direction away from the center line OO than the extension of the forward feed guide surface 19. At the end of the surface 20, a return feed stop guide surface 22 is formed in a straight line over a certain length range at a position retreated further from the extension of the return feed guide surface 20 in a direction away from the center line OO. Smooth feed edges are connected between the feed guide surface 19 and the forward feed stop guide surface 21 and between the return feed guide surface 20 and the return feed stop guide surface 22.

  The forward feed guide surface 19 is a surface that guides the conversion roller 18 of the crank 12 with the point directed from the inverted position toward the localization direction, and the backward feed guide surface 20 is the point of the crank 12 directed toward the inverted position from the localized position. This is a surface for guiding the conversion roller 18. Therefore, if the feed direction of the conversion roller 18 by the forward path guide surface 19 (the direction from the reverse position to the normal position) is the forward direction, the feed direction of the conversion roller 18 by the return path guide surface 20 is the reverse direction (from the normal position to the reverse position). Direction), and the relationship between the forward feed guide surface 19 and the forward feed stop guide surface 21 and the relationship between the backward feed guide surface 20 and the backward feed stop guide surface 22 are opposite to each other. When the forward feed stop guide surface 21 is formed at the right end, the return feed stop guide surface 22 is formed at the left end of the return feed guide surface 20. The curved edge connecting between the forward feed guiding surface 19 and the forward feed stopping guide surface 21 becomes the forward feeding separation guide surface, and the curved edge between the backward feeding guide surface 20 and the backward feeding stop guidance surface 22 is separated from the backward feed. It becomes a guide surface.

  The operation can 10 is positioned on the longitudinal center line OO across the frame of the crank guide 13, that is, between the forward feed guiding surface 19 and the backward feed guiding surface 20, The surface from which 16b protrudes is disposed on one side surface of the crank guide 13 with the surface facing the crank guide 13 side, and the feed roller 15 of the slider 11a is inserted into the elongated hole 17 of one arm 12a of the operating can drive crank 12. The conversion roller 18 attached to the other arm 12b is fitted from one side into the frame of the crank guide 13 as shown in FIG.

In the present invention, the relationship between the operating can drive crank 12, the forward feed guide surface 19 and the return feed guide surface 20 of the crank guide 13 is as follows. As described above, the arm 12a and the arm 12b of the crank 12 are substantially perpendicular to each other, the arm 12a is longer than the arm 12b, and the conversion roller 18 is received in the frame of the crank guide 13 in the inclined posture of the operation crank drive crank 12. It is done. 3E and 3G, the distance between the center line OO in the frame of the crank guide 13 and the forward feed guide surface 19 (or the backward feed guide surface 20) is S1, and the center line OO ( When the distance to the forward feed stop guide surface 21 (or the return feed stop guide surface 22) is S2, and the diameter of the conversion roller is R,
R <S1 <S2
It is.

  The manner in which the operating can drive crank 12 restrains the operating can 10 is as follows. That is, when the slider 11a receives the rotational force of the drive shaft 11 and moves in the forward direction or in the reverse direction, the operation crank drive crank 12 is pulled in the moving direction of the slider 11a, and the conversion roller 18 19 or the backward feed guide surface 20 is moved while being pressed, the operating can drive crank 12 is inclined at a constant angle in the forward direction or the reverse direction, and the operating can 10 is moved forward while pushing the protrusion 16a or 16b as the restraining means. It is moved in the direction (direction from dislocation to localization) or in the reverse direction (direction from localization to dislocation).

  Further, the manner in which the operating can drive crank 12 releases the restraint of the operating can 10 is as follows. That is, when the conversion roller 18 passes through the end of the forward feed guide surface 19 (or the backward feed guide surface 20) and enters the forward feed stop guide surface 21 (or the backward feed stop guide surface 22), The tilting posture increases, the conversion roller 18 moves away from the protrusion 16a or 16b, and the operating can 10 can move freely in any axial direction. The point change operation of the switch by the operation change mechanism according to the present invention will be described below. 4 to 8, illustration of the table and the linear guide is omitted for easy understanding of the operation.

(3) Case of normal conversion (a) Conversion from inversion to localization FIG. 4 (a) shows a state in which the backward indexing is possible with the point converted to the inversion. At this time, the slider 11a is in a position pulled by the base end (left end in the figure) of the drive shaft 11, the operation can drive crank 12 keeps a posture inclined greatly to the reverse side, and the conversion roller 18 guides the backward feed stop. It is in a position away from the protrusions 16a and 16b which are in contact with the surface 22 and are the restraining means of the operating can 10. Therefore, the operating can 10 is released from the restraint of the protrusions 16a or 16b and can freely move in the axial direction, and the point can be indexed backward as described above.

  When the point in the inverted position is converted to the fixed position, as shown in FIG. 4B, first, the drive shaft 11 is rotated in the positive direction by driving the electric motor, and the slider 11a is pushed out in the positive direction (the fixed direction). When the slider 12a is moved in the direction of the arrow in FIG. 4 (b), the crank 12 rises and reverses with the movement of the slider 11a, and the conversion roller 18 is lifted from the backward feed stop guide surface 22, and the opposite forward feed guide surface 19 on the opposite side. Pressed against. When the slider 11a is further moved in the forward direction as it is, the conversion roller 18 is pressed against the forward feed guiding surface 19, and the operation can drive crank 12 moves on the center OO of the operation can 10 while maintaining a constant angle posture. In the middle of the movement, the forward movement protrusion 16a overhanging from the operation cannula 10 is scraped (see FIG. 4 (c)) and moved in the forward direction while pushing the protrusion 16a. Are further moved in the positive direction (localization side) (see FIG. 4D).

  Next, the conversion roller 18 reaches the end of the forward feed guide surface 19 and is received by the curved edge between the forward feed guide surface 19 and the forward feed stop guide surface 21, and the operating can drive crank 12 is the center O of the operating can 10. The inclination angle increases while moving on -O (FIG. 4E), and further reaches the forward feed stop guide surface 21 to complete the localization of the point (FIG. 4F). When the slider 11a further moves in the forward direction, the conversion roller 18 separates from the outward movement protrusion 16a (FIG. 4G), and the restraint of the operation lever 10 is released and the backward indexing becomes possible. FIG. 1 shows a state when the point is changed to the localization.

(B) Conversion from stereotactic position to inverted position Conversion from localized position to inverted position is an operation to return from the state shown in FIG. 4 (g) to the state shown in FIG. 4 (a). A description will be given according to a) to (g). FIG. 5A shows a state where the points are localized. At this time, the slider 11a is at the end in the forward direction, and the conversion roller 18 is pressed against the forward feed stop guide surface 21 and is at a position sufficiently away from the protrusions 16a and 16b of the operating cannula 10.

  When the point at the localization is converted to the inverted position, the slider 11a is moved by pulling the slider 11a in the opposite direction (inverted direction) and moving it in the direction of the arrow in FIG. 5B by driving the electric motor. Along with this, the operating can drive crank 12 moves on the center OO of the operating can 10 and its tilting direction reverses and rises in the opposite direction, pulling the conversion roller 18 away from the forward feed stop stop guide surface 21, Tilt down to the return path guide surface 20 and press against the return path guide surface 20.

  When the slider 11a is further moved in the reverse direction (inverted side) as it is, the conversion roller 18 is guided to the backward feed guide surface 20, and the operation can drive crank 12 maintains a constant angle posture, so that the center O- In the middle of the movement, the conversion roller 18 scoops the return movement protrusion 16b while moving on the O and hitting the return movement protrusion 16b protruding from the operation can 10 (see FIG. 5C). After that, it moves while pushing it to reach the end of the return feed guiding surface 20 (FIG. 5 (d)), and is received by the curved edge connecting between the return feed guiding surface 20 and the return feed stop guiding surface 22 (FIG. 5). (E)). The operating can drive crank 12 is further tilted in the reverse direction (reversed side) while moving on the center OO of the operating can 10, and is guided to the return path stop guide surface 22 to complete the reversal of the point ( FIG. 5 (f)). When the slider 11a further moves in the reverse direction, the conversion roller 18 is separated from the return path protrusion 16b and is kept in contact with the return path feed stop guiding surface 22 so that the operating cannula 10 is released from the restraint. Indexing is possible (FIG. 5 (g)).

(4) Response to backward indexing Fig. 6 shows the operating procedure when there is a backward indexed point. FIG. 6A shows the relationship between the conversion roller 18 and the operation cannula 10 when the point is in a stereotaxic position. For example, when the point is in the stereotaxic position, the conversion roller 18 is detached from the backward movement protrusion 16a and is kept in contact with the forward feed stop guide surface 21 as shown in FIG. The restraint of the can 10 is released.

  In this state, when the train enters the point from the back side, therefore, the train wheel enters between the basic rail 1b in FIG. 1 and the tongrel 7a in the open state, and a force is applied in the direction indicated by the arrow F. 7a is pushed in the direction of the basic rail 1a. At this time, the first link 6a is pulled by the tongrel 7a and the first crank 5a of the upper crank is rotated, so that the convertible lock 3 is moved in the reverse direction. In response to this force, the operating can 10 is pushed out of the electric switch 4.

  As a result, although the conversion roller 18 is in the forward feed stop guide surface 21, the motion can 10 moves greatly in the reverse direction (reverse direction), and the positions of both protrusions 16 a and 16 b are in the reverse direction. Sneak away. FIG. 6B shows a state in which the operating can 10 has moved a distance of maximum d1 and the tongrel has moved substantially to the reverse side. When the movement can 10 moves a distance of d1 from the normal position to the inversion position by indexing, and when the movement distance of the operation can 10 moves halfway to the inversion change (movement distance <d1) There is. In any case, the motion after the backward indexing can be restored by a normal switching operation.

  In FIG. 7A, when the drive shaft 11 is driven and the slider 11a is moved from the normal position to the reverse side, the posture of the operation can drive crank 12 changes with the movement of the slider 11a and the reverse direction. As the posture changes, the conversion roller 18 moves in the opposite direction while being guided from the forward feed stop guide surface 21 to the backward feed guide surface 20 as shown in FIG. 7B. When the moving distance of the operating can 10 is halfway until the reversal, the operating can drive crank 12 scoops the protrusion 16b during the movement before reaching the position of FIG. It moves integrally with the operation lever 10 while being pushed, and is introduced into the backward feed stop guide surface 22 from the end of the backward feed guide surface 20 as shown in FIG. When the operation can 10 moves from the normal position to the inverted position, the protrusion 16b is scooped up at the terminal position of the return feed guiding surface 20 as shown in FIG. And converted to a normal inversion position (FIG. 7E).

  Furthermore, it moves along the return path stop guide surface 22 to release the restraint of the motion can 10, and the conversion roller 18 and the motion can 10 are returned to the normal relationship. In the above embodiment, the case where the backward indexing is performed when the point is in the fixed position has been described. However, when the train wheel is interrupted between the tongrel 7b in the inverted position, the tongrel 7a is separated from the basic rail 1a. The force in the direction acts to convert the conversion lock 3 to the fixed position, and the force can 10 is pulled into the electric switch 4 by receiving this force. The operation can be restored by a normal conversion operation.

(5) In the case of halfway reversal A halfway reversal is a case where the point is returned to the middle even during the point change. For example, a case will be described in which, when the point is in the inverted position, the electric switch is started in the direction of localization by manual operation and then returned to the inverted position during the conversion. In FIG. 8 (a), when the slider 11a is pushed in the forward direction and the operating can drive crank 12 is moved in the direction of the arrow in FIG. 8 (b), as in the normal conversion, the operation can be performed along with the movement of the slider 11a. The drive crank 12 rises, and the conversion roller 18 is lifted from the return path feed stop guide surface 22 and pressed against the opposite path feed guide surface 19.

  When the operating can drive crank 12 is further moved in the forward direction as it is, the conversion roller 18 is moved along the operating can 10 while being guided by the forward feed guiding surface 19, and is extended from the operating can 10 during the movement. The forward movement protrusion 16a is scooped up (see FIG. 8C), and then moved while pushing the protrusion 16a to move the operating cannula 10 in the direction of localization (see FIG. 8D).

  Up to the above, the normal conversion operation is performed, but the reverse operation in the middle is a case where the movement direction is reversed and returned to the original state during the conversion. If the feeding direction is reversed while moving the operating cannula 10 in the direction of localization while pushing the forward movement protrusion 16a with the conversion roller 18, the slider 11a is pulled in the opposite direction, so the inclination direction is reversed and reversed. Inclining in the direction (reverse direction), the conversion roller 18 reverses through the gap between the protrusions 16a and 16b, and is pressed against the reverse feed guide surface 20 on the opposite side (FIG. 8 (e)).

  As the operation crank drive crank 12 moves in the reverse direction (reverse direction), the conversion roller 18 catches the protrusion 16b for scooping the protrusion 16b while moving on the return-feed guide surface 20 and catching the protrusion 16b. Then, by pushing in the moving direction as it is, the operation lever 10 is returned to the reverse side (FIG. 8 (f)). Further, when the operating can 10 is returned while pushing the protrusion 16b for the backward movement, the feed end of the backward feeding guiding surface 20 is reached (FIG. 8 (g)), and the operating can drive drive crank 12 is guided by the curved edge to return the operating canal driving crank 12. The angle of inclination is increased by being introduced into the stop guide surface 22, the point is returned to the inverted position, and the conversion roller 18 is separated from the return movement protrusion 16 b to move the operation lever 10 within the return feed stop guide surface 22. The constraint can be released and the points can be indexed backward (FIG. 8 (h)).

  The operation of reversing the direction of movement of the motion can 10 in the middle of conversion is to be prepared in case of an emergency. There is almost no need to reverse the direction of movement. However, according to the present invention, it is possible to cope with such special operations.

  In the above-described embodiments, the case has been described in which when the point is in the inverted position, the operation mechanism is moved to the localization side by manual operation, and then returned to the inverted position again during the movement. The same applies to the case where the operation lever is manually moved to the opposite position when the point is at the localization position and returned to the localization position during the movement. According to the present invention, not only the normal point changing operation, but also the back position indexing to the point, and other situations, the position of the change roller and the moving tip or the moving tip is not related. Even if they are misaligned in this way, the displacement of the above-mentioned relational position is corrected to the normal position by itself while moving the driving crank from the inversion position to the inversion position or conversely from the inversion position to the in-position position. It does not affect the operation at all.

  The present invention enables the backward indexing by restraining and moving the motion canal during the movement from the normal position to the reverse position or from the reverse position to the normal position by using the motion can crank, and releasing the restraint after the conversion. Is. The movement control from the localization to the inverted position or from the inverted position to the fixed position is performed by selecting the protrusion for movement toward the localization side or the protrusion for movement toward the opposite side that is formed by protruding the movement. The moving roller is moved and displaced in one direction, and the selected roller is scooped by the conversion roller provided in the operating can drive crank, and the operating canister is moved from the normal position to the reverse position or from the reverse position to the normal position while pushing this. After the change of position or reversal, the posture of the operation can drive crank is changed, and the change of the movement roller is released from the protrusion for forward movement or the protrusion for backward movement. It can be canceled.

  The present invention can be applied to yard sorting lines other than the main line and side line turning machines, and can be returned without difficulty after the backward indexing is performed on the points.

1a, 1b rail, 2 sleepers, 3 conversion lock, 4 electric switch, 4a body, 5a, 5b upper crank, 6a, 6b link, 7a, 7b tong rail, 8 lower crank, 9 offset link, 10 operation rods, 11 drive shafts, 11a sliders, 12 operation rod drive cranks, 12a, 12b arms, 13 crank guides, 14 motors, 15 feed rollers, 16a, 16b protrusions, 17 oblong holes, 18 conversion rollers, 19 forward pass feeds Guide surface, 20 Return feed guidance surface, 21 Forward feed stop guidance surface, 22 Return feed stop guidance surface, 23 Linear guide, 24 Table

Claims (7)

An operation switch mechanism of an electric switch that includes an operation can drive crank and a crank guide, and performs restraint and release of the can.
The movement can switch points by moving forward or backward in the forward direction or backward direction to change the point from stereo to inversion or vice versa.
The restraining means is a portion that is hooked to the operation can drive crank, and is formed on a part of the plate surface of the operation canister for forward movement and backward movement,
The above-mentioned operation can drive crank is provided with a movement feed in the forward or reverse direction in conjunction with a slider that is moved in the linear direction in the forward or reverse direction by driving the electric motor provided in the electric switch. Having a conversion roller,
The conversion roller is guided by the crank guide, and changes the posture of the operation crank while rolling in the forward direction or the reverse direction,
The crank guide has a horizontally long frame shape, a forward path in the forward direction is formed on one inner surface in the frame, and a backward path in the opposite direction is formed on the other inner surface.
The forward path and the return path each have a guide surface of a conversion roller that controls the posture of the operation crank and changes the posture to hook the restraining means and the posture to disengage from the restraining means. A mechanism for changing the operation of the turning machine. The operating can drive crank has two substantially L-shaped arms, one arm is longer than the other arm, a long hole is formed in the longer arm, and a conversion roller is attached to the shorter arm. And
The long hole is for engaging the feed roller provided in the slider,
The conversion roller is fitted into a crank guide frame,
The crank guide has a forward feed guiding surface and a forward feed stop guiding surface on one side in a longitudinal frame along the axis of the operation rod,
On the other side of the frame, it has a return feed guidance surface and a return feed stop guidance surface,
The forward feed guide surface guides the conversion roller while keeping the drive crank that moves in the forward direction in a tilted posture at a constant angle that tilts in the forward direction, and hooks the restraining means during the feed movement in the forward direction. To move in the positive direction while restraining the movement
The forward path stop guide surface is used to increase the inclination angle of the operating can drive crank at the end of the outbound path guide surface and to release the operating roller driving crank conversion roller from the restraining means to release the operating can restraint. ,
The return path feed guide surface guides the conversion roller while keeping the driving crank that moves in the reverse direction in a tilted posture at a constant angle tilted in the reverse direction, and hooks the restraining means in the middle of the feed movement in the reverse direction. To move in the opposite direction while restraining the movement.
The return path stop guide surface increases the inclination angle of the operation can drive crank at the end of the return path feed induction surface, and disengages the operation roller drive crank conversion roller from the restraining means to release the operation can restraint. The operation switching mechanism of the electric switch according to claim 1 . The restraining means is formed on one surface side of the operation can with a certain distance from each other, and protrudes toward one side or the other side and the surface direction thereof, and with respect to the longitudinal center line of the operation canister A pair of protrusions projecting from opposite ends in opposite directions,
One of the protrusions is hooked on the conversion roller of the operating can drive crank that moves in the forward direction and moves the operating can in the forward direction.
3. The electric switch according to claim 2 , wherein the other protrusion is hooked on a conversion roller of an operation cantilever driving crank that moves in the opposite direction to move the operation can in the opposite direction. Motion conversion mechanism. The crank guide has a substantially rectangular horizontal frame shape, and the inner surface of one of the frames on the inner side of the center of the crank guide that is a movement line of the operation can be moved from one end to the other end. The forward feed guiding surface is formed in a straight line in the forward direction, and the backward feeding guide surface is formed in a straight line in the reverse direction over a certain range from the other end to the one end on the other inner surface of the frame,
In addition, an outward feed stop guide surface is formed at the end of the forward feed guide surface at a position further retracted in a direction away from the center line than the extension of the forward feed guide surface. The return feed stop guide surface is formed in a straight line over a certain length range at a position further retracted from the center line than the extension of the return feed guide surface, and the forward feed guide surface, the forward feed stop guide surface, The operation switching mechanism for an electric switch as claimed in claim 2 , wherein a smooth curved edge is connected between the first and second return feed guide surfaces and the return feed stop guide surface. The distance between the center line OO in the crank guide frame and the guide surface of the forward feed guide surface or the return feed guide surface is S1, and the distance between the center line OO and the forward feed stop guide surface or the return feed stop guide surface is When the distance is S2 and the diameter of the conversion roller is R,
R <S1 <S2
The operation switching mechanism for an electric switch according to claim 2 , wherein the mechanism is set to the following. The operating can drive crank is pulled in the moving direction of the slider, the conversion roller is pressed against the forward feed guiding surface or the backward feed guiding surface and moves, and the operating can drive crank is tilted at a certain angle in the forward or reverse direction. 3. The operation switching mechanism of the electric switch according to claim 2 , wherein the operation means is moved in the forward direction or the reverse direction by hooking the restraining means. The operation can drive crank has an inclined posture when the conversion roller passes through the end of the forward feed guiding surface or the backward feed guiding surface and enters the forward feeding stop guiding surface or the backward feeding stop guiding surface,
3. The electric roller according to claim 2 , wherein the conversion roller is released from the restraining means and releases the restraint of the motion, and the motion can freely move in any of the axial directions. A mechanism to change the operation of the machine

Images