EP4299408A1 - Switch adjusting device - Google Patents

Abstract

In a switch setting device comprising a drive unit with an attachment piece (6), which cooperates with a carriage (7) which is mounted so that it can be displaced in the positioning direction, in order to move the carriage (7) in the positioning direction, further comprising a point which can be displaced in the positioning direction between a first and a second positioning position mounted adjusting rod (9), with which the carriage (7) is drivingly coupled in the adjusting direction, preferably via a drive-on clutch (8), further comprising two test slides running parallel to the adjusting rod (9) and mounted so as to be displaceable in the adjusting direction between a first and a second adjusting position ( 12, 13) and locking slides (14, 15) which can be moved transversely to the direction of adjustment, the respective locking slide (14, 15) can be moved under force in one of the adjusting positions into a first locking position, in which it falls into a recess (16a, 16b) of the carriage ( 7). first or second recess (16a, 16b) of the carriage (7) displaceable actuating member (19a, 19b), which is arranged in a locking position between the locking slide (14, 15) and the adjusting rod (9) and in the first locking position of the Locking slide (14,15) engages in the recess (18a,18b) of the adjusting rod (7).

Description

The invention relates to a switch setting device comprising a drive unit with an attachment piece which cooperates with a carriage which is displaceably mounted in the positioning direction in order to move the carriage in the positioning direction, further comprising an adjusting rod which is displaceably mounted in the positioning direction between a first and a second positioning position, with which the carriage is preferably drivingly coupled via a drive-on clutch in the adjusting direction, further comprising two test slides which run parallel to the adjusting rod and are displaceably mounted in the adjusting direction between a first and a second adjusting position, and locking slides which can be displaced transversely to the adjusting direction.

A switch setting device of this type is available in the DE 19525012 A1 and the DE 202018101643 U1 described.

Adjusting devices for movable switch parts, such as in particular tongue rails or movable frogs, which are provided with an integrated end position testing device, are generally known as being part of the prior art. In the known adjusting devices, the movable switch part is mechanically changed with the aid of an electromechanical or hydraulic drive unit that drives an adjusting rod, with a locking device integrated into the switch drive for locking the adjusting rod end positions and an end position testing device being provided. Such an end position testing device is used to mechanically scan the current state of the switch and to generate a test signal, which can be used to reliably determine whether the switch has been changed correctly and whether the adjacent and the The tongue rail on the other side is in its correct end position. The end position testing device has two test slides, which extend essentially transversely to the longitudinal direction of the rail and which are moved in the longitudinal direction of the respective test slide when the switch is changed. The position of the test slides is recorded with the help of electromechanical transducers, for example in the form of limit switches or tongue test contacts, which can be integrated into the adjusting device.

The integrated locking device of an electromechanical actuating device according to DE 19525012 A1 comprises two locking slides, which can be displaced transversely to the direction of displacement of the adjusting rod and, in the respective locking position, engage in a form-fitting manner in a locking recess in the adjusting rod. A first locking slide is provided for locking the adjusting rod in one end position and a second locking slide is provided for locking the adjusting rod in the other end position. The locking slides are designed according to
DE 19525012 A1 further designed so that in the locking position they simultaneously engage in a respective locking recess of the tester slide in order to lock these in the respective end position.

The locking slides are spring-loaded in the direction of the adjusting rod or the test slide, so that they engage in the respective locking recess in a spring-loaded manner. In order to unlock the respective end position, it is therefore necessary to withdraw the respective locking slide from the locking recess, for which purpose the subject of DE 19525012 A1 a so-called switching ruler is provided, which moves the locking slide during the changeover process by running an inclined surface of the switching ruler onto a roller arranged on the locking slide against the spring force acting on the locking slide. The switching ruler is carried along in the changeover direction by an attachment piece of the drive unit, which only causes the actual changeover of the adjusting rod after it has passed through an idle path. While the idle path is passing through, the switching ruler is already taken along in the changeover direction in order to effect the above-mentioned unlocking of the locking device. After passing through the idle path, the attack piece takes a carriage along in the changeover direction, which is drive-coupled to the adjusting rod in the adjusting direction. This sequence of movements ensures that the adjusting rod and the test slides are unlocked before the changeover movement of the adjusting rod or the tongue rails begins.

In order to enable the switch to be opened, the carriage can be coupled to the adjusting rod via an opening clutch. During normal changeover operation, the opening clutch ensures that the positioning movement provided by the slide is transferred to the positioning rod. When opening the switch, however, such high forces act on the adjusting rod in the locked state of the adjusting device that the opening clutch gives way and the adjusting rod is moved into the other end position relative to the carriage. In order to ensure that the control rod and the tester slide are unlocked even in the event of a collision, the training is in accordance with DE 19525012 A1 ensures that the locking slide, which is in the locking position, moves out of the locking recess when the adjusting rod is displaced due to the opening the adjusting rod is pushed out. This is made easier by sliding the oblique flanks of the locking slide on corresponding oblique counter surfaces of the locking recess.

The switching ruler provided in the described prior art has some disadvantages. Due to the switching ruler, the opening clutch can only be stored in the side area of the slide, so that an asymmetrical application of force is possible. Furthermore, the system surrounding the collision clutch is of a complex structure and has an asymmetrical position. The switching ruler also has to be stored in a complex manner. Another disadvantage is that unlocking via inclined ramps on the switching ruler results in unfavorable power transmission and negatively influences wear behavior.

In addition, the switch setting device described can only be converted from a right-hand installation position to a left-hand installation position in a switch or vice versa with great effort, since only one front side is designed for attachment to the switch drive. Such a conversion takes place in the electromechanical point drive described in the prior art in such a way that the housing side from which the adjusting rod and any test slides exit the drive housing is retained when the point drive is on the right or on the right when viewed in a certain direction of travel left side of the switch should be installed. For this purpose, the entire housing must be rotated 180°, which causes the tester slides to lie on the wrong side of the adjusting rod. The test slides therefore have to be laboriously removed and reinstalled, one in each installation position Guideway on the left or right along the adjusting rod is required for installing the tester slide. This means that space is also required for two guide tracks for the test slides. Subsequently, the locking slides must also be adapted to the modified test slides or guideway. Furthermore, it can be assumed that the contacting of the end position testing device must also be adapted to the housing rotated by 180° in order to output the test signal corresponding to the switch position.

Hydraulic switch drives with front sides that can be used on both sides to avoid 180° rotation when changing the installation position are known from the prior art. This principle could not yet be used for electromechanical switch drives due to design difficulties or excessive space requirements.

The present invention therefore aims to overcome the above-mentioned disadvantages and to create a switch setting device that is simple and robust and allows safe operation. With the same or less space requirement, a switch setting device, preferably a movable one, should also be created, in which one front side of the housing or both front sides of the housing is/are suitable for attachment in the direction of the switch, regardless of whether the switch setting device is driven electrohydraulically or electromechanically should.

To solve this problem, according to a first aspect of the invention, in a switch setting device of the type mentioned at the outset, it is essentially provided that a first locking slide is subjected to force in the first setting position can be moved into a first locking position, in which the first locking slide engages in a first recess of the carriage, and a second locking slide can be moved under force in the second positioning position into a first locking position, in which the second locking slide engages in a second recess of the slide, whereby Two motion transmission elements, preferably rocker arms, are arranged on the carriage, which can be actuated by the engagement piece and convert at least part of the movement of the engagement piece into a movement of an actuating member which can be displaced in the first or second recess of the carriage and which is in a locking position between the first or .Second locking slide and the adjusting rod is arranged and engages in a first or second recess of the adjusting rod in the first locking position of the first or second locking slide.

The invention is therefore based on the idea of not allowing the respective locking slide to interact directly with the adjusting rod in the locking position, but rather with the interposition of an actuating member that can be actuated by a motion transmission element, which is preferably designed as a rotatably mounted roller or roller at least in the contact area with the adjusting rod or locking slide is. The locking effect of the locking slide is achieved in that it engages in a recess in the slide. The actuating member is intended to move the respective locking slide from its locking position into a release position at the beginning of the changeover process, ie to bring it out of engagement with the recess of the slide. This is achieved by the motion transmission element being moved from the drive unit via the attachment piece at the beginning of the changeover process is driven and the actuator pushes the locking slide away. This means that the respective position, ie the end position, can be unlocked using simple means. Because a separate motion transmission element, in particular a rocker arm, is provided for unlocking each of the two end positions, the corresponding unlocking mechanisms can be implemented structurally separately, with a mirror-symmetrical arrangement of the motion transmission elements being particularly advantageous. This also makes it possible to arrange the drive-up clutch in the area between the motion transmission elements and therefore in a central position of the carriage, so that an asymmetrical introduction of force is avoided.

According to a preferred embodiment, the movement transmission elements are each designed as rocker arms, which are pivotally mounted and whose first lever arm can be actuated by the attack piece and whose second lever arm has the respective actuating member.

Further advantages of unlocking by means of the movement transmission elements, in particular rocker arms, and actuating members that can be actuated by these compared to an embodiment with a switching ruler are that the unlocking mechanism can be arranged in a space-saving manner between the drive unit and the housing base, that material savings are possible, and the manufacturing effort is reduced Guide rods of the switching ruler can be dispensed with, as small bushings are sufficient to guide the rocker arms.

The construction according to the invention also means that the unlocking process is insensitive to reverse tension. Back tensions can arise, for example, from trapped foreign bodies or bent switch tongues and cause stress on the components involved in locking the respective end position. However, since the locking slide located in the first locking position is not in direct engagement with the adjusting rod, but rather with the carriage, the return tension acting on the locking slide is limited to the amount that can be transmitted by the approach clutch or the actuating force of the point drive. To unlock the locking slide, the spring force acting on it and the frictional force resulting from tension with the slide must first and foremost be overcome. The locking slide can be reliably unlocked by a motion transmission element, for example a rocker arm, which in principle transmits the actuating force of the drive undiminished to the locking slide via the actuating member.

The locking of the slide according to the invention with the aid of the locking slides engaging in corresponding recesses in the slide also advantageously ensures that the position of the slide in a locked position is clearly determined by the position of the recesses in the slide when the locking slide strikes in the respective recess in both adjustment directions , that is, it is recorded essentially without play. Preferably, an at least partially conical geometry of the locking slide in engagement with the recesses can ensure a play-free locking of the slide, the cone-like geometry comprising a change in cross-section of the locking slide, in which the locking slide is in the positioning direction measured width of the cross section towards the free end of the locking slide preferably decreases steadily. This results in two main advantages: 1. Impacts on the tongue rail are absorbed directly by the locking unit in order to protect the spindle including the drive unit from damage caused by the impacts. 2. A fixed reference position of the slide and adjusting rod enables operationally relevant deviations in the measurement results of an air tester measurement to be detected as early and as accurately as possible. The determination of the actual test air depends to a certain extent on a repeatedly identical, clearly defined position of the carriage connected to the adjusting rod. The clear position of the slide with the adjusting rod therefore makes a safety-relevant contribution.

The locking of the slide according to the invention with the aid of the locking slides engaging in corresponding recesses in the slide also advantageously ensures that the adjusting stroke of the adjusting rod is clearly defined by the distance between the two recesses in the slide and is easily recognizable. The adjustment stroke can be changed by replacing the slide with appropriately spaced recesses and is, for example, 150mm, 180mm or 220mm. Instead of replacing the slide as a whole, only part of the slide can be replaced in order to change the distance between the recesses. The two recesses can thus be provided as part of the carriage in the form of an insert, which can be assembled interchangeably with the carriage.

In order to provide a second locking level as a fallback level in addition to locking the adjusting rod, a preferred development of the invention provides that first locking slide in the first locking position engages in a first recess of the test slide and the second locking slide in the first locking position engages in a second recess of the test slide. This also secures the tester slides in the end positions.

When opening the switch, care must be taken to ensure that the test slides are unlocked, whereby the unlocking cannot take place by actively actuating the movement transmission elements, in particular rocker arms, but by pushing the actuator out of the recess in the adjusting rod as a result of a relative displacement of the adjusting rod relative to the carriage. A preferred embodiment in this context provides that the actuating member and/or the recess of the adjusting rod is dimensioned such that it opens the first or second locking slide as a result of an opening process in which the actuating member is released by relative displacement of the adjusting rod relative to the locked carriage the first or second recess of the adjusting rod was pushed out, moved into a second locking position, in which the first locking slide remains in engagement with the first recess of the slide or the second locking slide remains in engagement with the second recess of the slide, but the test slide is released become. This second locking position of the locking slide, which lies between the first locking position and the release position, has the advantage that the carriage remains locked when the switch is opened and the opening process can be detected as such in the second locking position.

In order to ensure that the unlocking of the respective end position takes place in the course of a changeover process before the adjusting rod is set in motion, it is preferably provided that the attack piece for taking the slide in the respective adjusting direction after an idle travel cooperates with a respective stop of the slide, wherein the respective motion transmission element, in particular the first lever arm of the respective rocker arm, can be actuated along the free path of the attack piece.

In particular, it is provided here that the actuating member of the second lever arm displaces the first or second locking slide out of engagement with the first or second recess of the carriage at the end of the free travel of the driver to assume a release position.

In this context, the first or second locking slide is designed to be out of engagement with the first or second recess of the test slide in the second locking position.

According to a preferred development, the first and second locking slides are each provided with a first locking lug and a second locking lug, the first locking lug being arranged to enter the first and second recesses of the slide in the first and second locking positions of the locking slide to intervene and the second locking lug is arranged to engage in the first or second recess of the test slide in the first locking position.

As is known per se, the first and second locking slides can be equipped with a respective electrical switch work together to signal that the correct end position has been reached.

In order to achieve a compact design, a preferred embodiment provides that the first and second locking slides are guided so that they slide against one another and can be displaced transversely to the direction of adjustment. The arrangement that slides against one another also enables better absorption of the locking forces acting on them transversely to the direction of displacement of the locking slides, i.e. in the direction of adjustment.

Particularly advantageously, the locking slides can be guided displaceably in a locking block, which positively encloses the locking slides sliding against one another on the two outer sides.

If, as corresponds to a further preferred embodiment of the invention, the tester slides pass through the locking block, their arrangement takes up less space in the housing. In addition, the locking block can encompass the tester slides radially in order to fix their position relative to the locking slides, so that a simple and at the same time stable position fixation is ensured.

In order to enable a simple conversion of the switch setting device according to the invention from a right-hand installation position to a left-hand installation position and vice versa, if possible without changing components, it is preferably provided that the switch setting device further comprises a housing in which the drive unit, the attachment piece, the carriage, the The opening clutch and the locking slides are arranged, and that the adjusting rod and the test slides are respectively Pass through housing openings of the housing on opposite sides of the housing and are displaceably mounted in the housing openings. Depending on the installation position, the adjusting rod and the test slide can either emerge from one side of the housing or from the other side of the housing and be guided to the tongue rails, whereby the remaining assemblies, such as in particular the locking slides, the attachment piece, the slide and the drive-on clutch, do not require any adjustments. A central arrangement of the components and their symmetrical design are particularly advantageous.

Overall, the invention allows a modular structure of the switch setting device, in which, for example, the drive unit can be replaced as a module without the remaining components having to be removed or converted. A drive unit with an electromechanical drive, such as an electric motor, or one with an electro-hydraulic drive, i.e. an electrically operated hydraulic cylinder-piston unit, can be installed.

In this context, another advantage that should be mentioned is the use of motion transmission elements, such as rocker arms for the locking and unlocking mechanism, which lie outside the module exchange paths and therefore also promote the modular structure of the switch setting device. Although the modules interlock in places, they do not lie on top of each other, so that after loosening the screw connection to the housing, each module can easily be lifted up individually, for example to easily replace them.

In order to further improve the suitability of one or both front sides of a switch drive, regardless of the drive type (hydraulic or mechanical), for attachment towards the switch, further aspects of the invention are provided below, which, on the one hand, require fewer components and installation space than usual solutions from the prior art , and on the other hand cause less maintenance and wear. The other aspects are independent of the first aspect of the invention.

According to a second aspect of the invention, a locking block for a switch setting device comprising two side walls and at least one locking slide guided displaceably between the side walls for locking at least one test slide and an adjusting rod of the switch setting device is provided, the side walls each having an opening for passing the at least one test slide through the Have locking block in a direction transverse to the direction of displacement of the at least one locking slide.

In the case of a symmetrical design in which only one guide track is required for a tester slide, the guide track of a tester slide or the tester slide can be guided through the locking block to further save installation space. For example, the walls or housings of the locking block surrounding the locking slides can have bores, recesses or depressions in order to pass a test slide through.

Vertical recesses in those running between the walls of the locking block are also preferred Locking slides provided. A vertical side of the vertical recess can be used to lock the two test slides that run one above the other through the vertical recesses. The tester slides are locked within the locking block.

The central arrangement ensures the relative position between the test rods, locking block and locking slide in the event of unusually high tension on the switch setting device.

According to a third aspect of the invention, a locking device for a switch setting device is provided, comprising a carriage which can be driven by a drive unit and is mounted displaceably in the setting direction and has a bore passing through the carriage for receiving an adjusting rod, at least one recess being formed in the carriage into which a locking slide is inserted can be inserted transversely to the direction of adjustment to lock the carriage, with the at least one recess opening into the bore.

Such a design makes it possible to lock both the carriage and the adjusting rod guided therein with a single locking slide, as has already been explained in connection with the first aspect of the invention. In particular, the adjusting rod can be contacted by the locking slide with the interposition of an actuating member or an actuating member can spatially overlap the bore in the slide. Here, the adjusting rod can preferably have recesses for the engagement of the actuating member.

In particular, in the event that an actuating member with a round cross-section is used, notches in the adjusting rod that promote stress concentrations can be avoided in cooperation with matching rounded recesses in the adjusting rod.

Because the actuating member moves at the height of the recess in the adjusting rod during the actuating movement and the end position is locked via the larger recesses in the slide, the recess in the adjusting rod can be significantly smaller and therefore more gentle on the cross section of the adjusting rod.

Another advantage is that all essential positions of the components are scanned centrally in one line and without branches, which enables space savings.

The locking device of the third aspect of the invention can be particularly advantageously combined with a locking block of the second aspect of the invention, in such a way that the locking device and the locking block adjoin one another. This leads to space and material savings and enables multiple functions of components. Furthermore, this enables the design of particularly short locking slides, which leads to material savings.

For this purpose, it can be provided that the carriage is arranged to slide on the at least one locking slide in a release position of the at least one locking slide that is out of engagement with the recess of the carriage.

Preferably, the carriage can also be arranged to slide on the locking block, in particular on its side walls.

According to a fourth aspect of the invention, a switch setting device is provided, comprising a housing in which a locking device according to the third aspect of the invention, a locking block according to the second aspect of the invention, a drive unit with an attack piece which cooperates with the carriage mounted so as to be displaceable in the setting direction in order to move the carriage in the positioning direction, and an adjusting rod which is displaceably mounted in the positioning direction between a first and a second positioning position and with which the carriage is drivingly coupled in the positioning direction, preferably via a drive-on clutch, are arranged.

This results in an advantageous arrangement of the individual modules of the switch setting device in the housing, namely a) the drive unit, b) the adjusting rod including the carriage and c) the locking block. These three modules are arranged adjacent to one another transversely to the direction of adjustment, in such a way that the adjusting rod together with the carriage is arranged between the drive unit and the locking block. It is possible to install or remove an individual module independently of the other modules if the modules interlock but do not overlap, so that they can be removed independently from the top of the housing.

The carriage and the attachment piece of the drive unit are preferably guided in a rolling manner in grooves in the housing base, which results in a space-saving guide that does not require sliding rods or the like.

Furthermore, a symmetrical, central arrangement of the modules between the two housing walls opposite one another in the direction of adjustment is advantageous, so that the switch setting device is suitable for use on both sides, i.e. a left or a right installation position. Changing the installation position can also be simplified by arranging a connection for the hand crank of a hand drive that may be provided on the top of the housing. The rotational movement of the hand crank can be directed to a drive or gear shaft of the actuator by means of a flexible shaft inside the housing.

The invention is explained in more detail below using an exemplary embodiment shown schematically in the drawing. In this show Fig. 1 a perspective view of a switch setting device with an open lid, Fig. 2 a simplified partial view of the switch setting device according to Fig. 1 in a right end position, Fig. 3 a representation according to Fig. 2 at the beginning of a positioning process, Fig. 4 a representation according to Fig. 2 during a positioning process, Fig. 5 a representation according to Fig. 2 when the left end position is reached, Fig. 6 a representation according to Fig. 2 with locked left end position, Fig. 7 a vertical section of the carriage from Fig. 1 including drive-on clutch, Fig. 8 a horizontal section of the device according to Fig. 1 in the area of the carriage in a locked left end position, Fig. 9 a representation according to Fig. 7 during a collision and Fig. 10 a representation according to Fig. 8 in a position according to the adjusting rod Fig. 9 .

In Fig. 1 A switch setting device 1 is shown, in the housing 2 of which all the components required for driving and transmitting the setting movement, for locking the end positions, for checking the end positions and for enabling the switch to be opened are arranged. A drive unit is provided which comprises an electric motor 3 and a spindle gear driven by the electric motor 3 with the interposition of a gear 4, which provides a linear actuating movement in the direction of the axis of the spindle 5. For this purpose, an attachment piece 6 equipped with a spindle nut interacts with a slide 7 in a manner described in more detail below in order to transmit the adjusting movement to the slide 7. The carriage 7 in turn is coupled to the adjusting rod 9 via a drive-on clutch 8, via which the adjusting movement is transmitted to the tongue rails, not shown, in accordance with the double arrow 10. The carriage 7 and attachment piece 6 are preferably guided in a rolling manner in grooves in the housing base.

The hand crank 11 is part of a hand drive with which the drive unit can be operated manually if necessary.

To check that the end positions have been taken correctly, test slides 12 and 13 are connected to the tongue rails, which are also mounted in the housing 2 so that they can move in accordance with the double arrow. Furthermore, a first locking slide 14 and a second locking slide 15 are provided, which are guided transversely, in particular perpendicular to the longitudinal extent of the adjusting rod 9 and the test slide 12, 13, separately from one another between a release position and at least one locking position. In the lock position the corresponding locking slide 14,15 causes the adjusting rod 9 and the test slide 12,13 to be locked in the corresponding end position, as will be explained in more detail in the following figures.

In Fig. 2 The changeover device is shown in the right end position. To lock this end position, the first locking slide 14, which is acted upon by the force of a spring 17, dips with a locking lug into a left-hand, first recess or link 16a of the slide 7. The locking lug is pressed resiliently against a roller 19a, which dips into a first recess 18a of the adjusting rod 9 (see Fig. 7 and 8th ). The roller 19a is arranged on a second lever arm 21a of a rocker arm 20a, which is pivotally attached to the carriage 7 about the axis 22a. The first lever arm 23a is arranged to be operated by the attack piece 6. For locking the left end position, a mirror image design of the components described is provided on the right side of the carriage 7. Accordingly, a rocker arm 20b is pivotally attached to the carriage 7 about the axis 22b, the first lever arm 23b being arranged to be actuated by the attack piece 6, and the second lever arm 21b carrying a roller 19b which is in the second recess 18b of the adjusting rod 9 is held displaceably.

In the in Fig. 2 In the end position shown, a locking lug of the first locking slide 14 also engages in first recesses 25 and 26 of the first and second test slides 12, 13 in order to also check or lock the test slides 12, 13 in their end position.

In Fig. 2 and Fig. 3 It can also be seen that the attack piece 6 is located between two stops 24a and 24b Sleigh 7 attacks, the attack piece 6 being dimensioned such that, starting from an end position, it only interacts with the opposite stop 24a or 24b after passing through a free travel x, so that the carriage 7 is only taken along in the changeover direction after this free travel x. For unlocking the in Fig. 2 In the end position shown, the attack piece 6 is moved to the left by the drive unit, the attack piece 6 actuating the first lever arm 23a of the rocker arm 20a when passing through the free travel x, whereby the rocker arm 20a pivots about the axis 22a and the roller 19a arranged on the second lever arm 21a is removed from the first recess 18a of the adjusting rod 9 emerges and presses the first locking slide 14 out of the first recess 16a of the carriage 7. At the same time, the tester slides 12 and 13 are unlocked. In this way the in Fig. 3 unlocked state shown is reached. The empty path x is made up of a first and second partial path. The rocker arm 20a is not yet taken along along the first partial path. This distance until the rocker arm is actuated is greater for versions with an electromechanical drive than for a hydraulic drive. The second partial path then serves to actuate the rocker arm 20a.

The further displacement of the attack piece 6 to the left causes a displacement of the carriage 7 together with the adjusting rod 9 coupled to it due to the impact on the stop 24a of the carriage 7, as shown in Fig. 4 is shown. The tester slides 12 and 13 are also taken along by the tongue rails in the changeover direction. After going through the entire changeover path, the in Fig. 5 The left end position shown is reached, in which the second locking slide 15 is now spring-loaded into the second recess or backdrop 16b of the carriage 7 can occur. Here, the second locking slide 15 presses the roller 19b arranged on the second lever arm 21b of the rocker arm 20b into the second recess 18b of the adjusting rod 7 in order to lock the adjusting rod 9 in the left end position in this way, as shown in Fig. 6 is shown. At the same time, a locking lug of the second locking slide 15 engages in the second recesses 27 and 28 of the test slides 12 and 13, respectively, so that these are also checked or locked in their end position.

In the Fig. 2 to 6 It can also be seen that the first and second locking slides 14, 15 are received in a form-fitting manner in a locking block 29 and are guided there in the direction of displacement.

The left end position is shown again in the sectional views Fig. 7 and 8th shown, where in Fig. 7 In addition, the structural details of the drive-on clutch 8 can be seen. The drive-on clutch 8 comprises a pressure member 30, which is pressed against the adjusting rod 9 by a spring 31 with the interposition of a ball or roller 32, the ball or roller 32 engaging in a recess 33 in the adjusting rod 9 and thereby creating a non-positive and positive coupling Adjusting rod 9 with the carriage 7 is guaranteed. In the event of the switch opening, such a force is exerted by the tongue rails on the adjusting rod 9 and from this on the locked carriage 7 that the ball or roller 32 together with the pressure member 30 is pressed upwards against the force of the spring 31, whereby it a relative displacement of the adjusting rod 9 to the carriage 7 occurs. This is in the Fig. 9 and 10 shown. From a comparison of the Fig. 8 and 10 It can be seen that when driving up, the roller 19b simultaneously comes out of the second recess 18b of the adjusting rod 9 is pushed out, the roller 19b in turn pushing the second locking slide 15 back into the second recess 16b of the carriage 7. However, the second locking slide 15 remains in an intermediate position (second locking position), in which the carriage 7 remains locked. However, the displacement of the second locking slide 15 is sufficient for the locking lug assigned to the test slides 12, 13 to emerge from the second recesses 27 and 28 of the test slides 12, 13 in order to release them and detect the collision.

Since the just described unlocking of the tester slides 12, 13 only takes place after a certain changeover path, the second recess 27 formed in the first tester slide 12 is larger in the longitudinal direction than the second recess 28 formed in the second tester slide 12. This takes into account the fact that the first tester slide 12 in the right end position shown here, from which the switch is opened, is assigned to the remote tongue rail, which is displaced in front of the adjacent tongue rail in the course of the opening process. The same applies to the first recesses 25 and 26 effective in the other end position, whereby here, conversely, the first recess 26 formed in the second test slide 13 is longer than the first recess 25 formed in the first test slide 12, since the second test slide 13 is the remote one Tongue rail is assigned.

Claims (31)

Switch setting device comprising a drive unit with an attachment piece (6) which cooperates with a carriage (7) which is displaceably mounted in the positioning direction in order to displace the carriage (7) in the positioning direction, further comprising an adjusting rod which is displaceably mounted in the positioning direction between a first and a second positioning position (9), with which the carriage (7) is coupled in terms of drive, preferably via a drive-on clutch (8) in the adjusting direction, further comprising two test slides (12) which run parallel to the adjusting rod (9) and are displaceably mounted in the adjusting direction between a first and a second adjusting position. 13) and locking slides (14, 15) which can be moved transversely to the direction of adjustment , characterized in that a first locking slide (14) can be moved under force in the first adjusting position into a first locking position, in which the first locking slide (14) moves into a first recess (16a ) of the carriage (7) engages, and a second locking slide (15) can be moved in the second position under force into a first locking position, in which the second locking slide (15) engages in a second recess (16b) of the carriage (7), whereby Two motion transmission elements, preferably rocker arms (20a, 20b), are arranged on the carriage (7), which can be actuated by the attack piece (6) and at least part of the movement of the attack piece (6) into a movement in the first or second recess (16a, 16b) of the carriage (7) displaceable actuating member (19a, 19b), which is arranged in a locking position between the first or second locking slide (14, 15) and the adjusting rod (9) and in the first locking position of the first or second locking slide (14, 15) engages in a first or second recess (18a, 18b) of the adjusting rod (9). Switch setting device according to claim 1, characterized in that the first locking slide (14) in the first locking position engages in a first recess (25, 26) of the test slide (12, 13) and the second locking slide (15) in the first locking position in a second Recess (27,28) of the test slide (12,13) engages. Switch setting device according to claim 1 or 2, characterized in that the actuating member (19a, 19b) is dimensioned such that it opens the first or second locking slide (14, 15) as a result of an opening process in which the actuating member (19a, 19b). Relative displacement of the adjusting rod (9) relative to the locked carriage (7) was pushed out of the first or second recess (18a, 18b) of the adjusting rod (9), into a second locking position, in which the first locking slide (14) engages with the first recess (16a) of the slide (7) remains or the second locking slide (15) remains in engagement with the second recess (16b) of the slide (7), but the test slides (12, 13) are released. Switch setting device according to claim 1, 2 or 3, characterized in that the attack piece (6) for taking the carriage (7) in the respective setting direction after at least one idle path (x) with a respective stop (24a, 24b) of the carriage (7 ) interacts, whereby the respective motion transmission element can be actuated along the free path (x) by the attack piece (6). Switch setting device according to claim 4, characterized in that the actuating member (19a, 19b) of the second lever arm (21a, 21b) engages the first or second locking slide (14, 15) up to the end of the free travel (x) of the engagement piece (6). a release position out of engagement with the first or second recess (16a, 16b) of the carriage (7). Switch setting device according to one of claims 2 to 5, characterized in that the first or second locking slide (14, 15) is designed to be disengaged from the first or second recess (25, 26, 27, 28) in the second locking position. the tester slide (12,13) stands. Switch setting device according to one of claims 1 to 6, characterized in that the actuating member (19a, 19b) is designed as a rotatably mounted roller or roller, at least in the contact area with the adjusting rod or locking slide. Switch setting device according to one of claims 1 to 7, characterized in that the first and second locking slides (14, 15) are guided so that they slide against each other and can be displaced transversely to the setting direction. Switch setting device according to one of claims 1 to 8, characterized in that the first and second locking slides (14, 15) cooperate with a respective electrical switch. Switch setting device according to one of claims 1 to 9, further comprising a housing (2) in which the The drive unit, the attachment piece (6), the carriage (7), the opening clutch (8) and the locking slides (14,15) are arranged, and that the adjusting rod (9) and the test slides (12,13) each have housing openings in the housing ( 2) pass through on opposite sides of the housing and are movably mounted in the housing openings. Switch setting device according to one of claims 1 to 10, characterized in that the test slides (12, 13) pass through a locking block (29) in which the first and second locking slides (14, 15) are displaceably guided. Locking block (29) for a switch setting device comprising two side walls and at least one locking slide (14, 15) which is displaceably guided between the side walls for locking at least one test slide (12, 13) and an adjusting rod (9) of the switch setting device, the side walls each having an opening for Passing the at least one test slide (12,13) through the locking block (29) in a direction transverse to the direction of displacement of the at least one locking slide (14,15). Locking block according to claim 12, characterized in that the locking block (29) has electrical switching contacts for checking the position of the at least one locking slide (14, 15). Locking block according to claim 12 or 13, characterized in that the at least one locking slide (14, 15) has a locking lug in a region lying in the locking block (29), which is in a locking position a recess (25,26,27,28) of the at least one test slide (12,13) engages. Locking block according to claim 12, 13 or 14, characterized in that two locking slides (14, 15) are provided, which are guided to slide against one another and be displaceable next to one another between the side walls. Locking block according to one of claims 12 to 15, characterized in that two test slides (12, 13) are provided, which are arranged one above the other. Locking device for a switch setting device comprising a carriage (7) which can be driven by a drive unit and is mounted displaceably in the setting direction and has a hole passing through the carriage (7) for receiving an adjusting rod (9), with at least one recess (16a, 16b) in the carriage (7). is formed, into which a locking slide (14, 15) for locking the carriage (7) can be inserted transversely to the direction of adjustment, characterized in that the at least one recess (16a, 16b) opens into the bore. Locking device according to claim 17, characterized in that the bore is circular cylindrical and the recess (16a, 16b) is designed to displaceably accommodate the locking slide in a radial direction with respect to the bore. Locking device according to claim 17 or 18, characterized in that the adjusting rod (9) can be contacted by the locking slide (14, 15) with the interposition of an actuating member (19a, 19b) and/or that an actuator (19a, 19b) spatially overlaps the bore in the slide. Locking device according to claim 17, 18 or 19, characterized in that the carriage (7) is drivingly coupled to the adjusting rod (9) in the adjusting direction via a drive-on clutch (8) arranged in the middle of the carriage (7). Locking device according to claim 19 or 20, characterized in that the adjusting rod (9) has recesses (18a, 18b) for the engagement of the actuating member (19a, 19b), the recesses (18a, 18b) preferably being limited in an adjusting direction by oblique contact surfaces are. Locking device according to one of claims 17 to 21, characterized in that the carriage (7) has opposite stops (24a, 24b) for an engagement piece (6) of a drive unit, so that the carriage (7) can be carried along by the engagement piece (6) in the adjusting direction , and that at least one motion transmission element is provided on the carriage (7) in order to convert at least part of the movement of the engagement piece (6) along an idle path thereof into a movement of the actuating member (19a, 19b) in the unlocking direction of the locking slide (14, 15). Locking device according to claim 22, characterized in that the movement transmission element is designed as a rocker arm (20a, 20b). Locking device according to claim 22 or 23, characterized in that there are two in the carriage (7). Recesses (16a, 16b) are formed, into which a locking slide (14, 15) for locking the carriage (7) can be inserted transversely to the direction of adjustment, so that an actuating member (19a, 19b) can be received in each recess (16a, 16b). is that each actuating member (19a, 19b) can be actuated by its own motion transmission element and that the recesses (16a, 16b), the actuating members (19a, 19b) and the motion transmission elements are preferably arranged symmetrically to a central axis of the carriage. Locking device according to one of claims 17 to 24, further comprising a locking block according to one of claims 12 to 16, wherein the carriage (7) is in a release position of the at least one locking slide which is out of engagement with the recess (16a, 16b) of the carriage (7). (14,15) is arranged sliding on this. Locking device according to claim 25, characterized in that the carriage (7) is slidably arranged on the locking block (29), in particular its side walls. Switch setting device comprising a housing (2) in which a locking device according to one of claims 17 to 26, a locking block (29) according to one of claims 12 to 16, a drive unit (3) with an attachment piece (6) which is connected to the in the setting direction slidably mounted carriage (7) cooperates to move the carriage (7) in the positioning direction, and an adjusting rod (9) which is slidably mounted in the positioning direction between a first and a second positioning position, with which the Carriage (7) is preferably drive-coupled via a drive-on clutch (8) in the adjusting direction, are arranged. Switch setting device according to claim 27, characterized in that the locking block (29) has end position test contacts which can be actuated by the at least one locking slide (14, 15). Switch setting device according to claim 27 or 28, characterized in that the test slides (12, 13) passing through the locking block (29) each pass through housing openings of the housing (2) on opposite housing walls and are displaceably mounted in the housing openings and that the locking block (29) is preferred is arranged centrally between the housing walls. Switch setting device according to claim 27, 28 or 29, characterized in that the carriage (7) coupled to the adjusting rod (9) is arranged centrally between the housing walls in a central position arranged in the middle between the first and second setting positions. Switch setting device according to one of claims 27 to 30, characterized in that the opening clutch (8) is arranged centrally on the carriage (7) in the setting direction.

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