DE2316907C3 - Elevator control with a floor control device - Google Patents

Description

Ceiling of the engine room adapted to a limited height when it controls an elevator whose maximum speed is around 400 m / min, however its height is increased to above the ceiling level of the engine room if the driving speed of the elevator is increased beyond this value. On the other hand, elevators are using a higher speed is required, and this requirement leads to considerable difficulty.

The invention is based on the object of a floor control device of only small dimensions to control high speed: shear lifts.

This object is achieved according to the invention by a together with the precursor in a certain Distance to this movable auxiliary forerunner for detecting a landing call outside the Movement range of the forerunner, means for determining the speed of the elevator in Be Depending on the position of the follow-up device to that of the auxiliary forerunner or of the forerunner detected landing call and by memory elements for storing the position of the auxiliary forerunner Detection of a call floor.

In the following description, a preferred embodiment of the invention is based on the Drawing shown. It shows

Fig. 1 shows the structure of a known floor control device in a schematic representation.

F i g. 2 the basic principle of the invention in a schematic representation,

3 shows a floor control device according to the invention in a perspective view,

F i g. 4 shows an enlarged detail from FIG. 3,

5 shows the arrangement of the means for position determination of a forerunner, based on the position of a follow-up device on the floor control device according to the invention in a schematic representation,

6 shows the arrangement of the means for determining the position of the tracking device in the floor control device according to the invention in a schematic representation.

Fig. 7 shows the structure of a position detector in Floor control device according to the invention,

Fig. 8 shows the output signals of the zone position detector 7 and a waveform converter and the effect of the speed command relay in the elevator control,

Fig. 9 shows the arrangement of the idler device, the precursor and the accessories of the invention Floor control device,

Fig. 10 shows an electrical circuit for control the speed command relays used in the elevator control,

11 shows an electrical circuit for control the delay command relay in the elevator control according to the invention.

12 and 13 electrical circuits for controlling the floor relays used,

14 shows the electrical circuit for control the call detection relay,

15 shows an electrical circuit for activation the oscillating units used in the floor control device according to the invention.

In Fig. I is the structure of a well-known floor control device for the control of an elevator shown schematically, which with a maximum speed of 360 m / min in a building of 25 floors

is operated. A drive belt I connected to the elevator cage runs at the speed of the Lift cage around. An output gear 2 of a reduction gear, not shown, is provided with a reduced speed proportional to that of the elevator cage. A drive chain 4 is Tensioned between the driven gear 2 and an idler gear 3. A follower device 5 becomes vertical movably held by a guide rail 6 and driven by the chain 4 so that its vertical movement takes place at a lower speed, which, however, corresponds to the operating speed of the elevator cage is proportional. Furthermore, a forerunner 7 is provided on the follower device 5 so that it can move vertically. A guide rail 8 for the vertical movement of the forerunner 7 is supported by support arms 9 on the follower device 5 held. A small motor, not shown, is on the idler device 5 for carrying out the Vertical movement of the forerunner 7 mounted in the forerunner to the follower device 5.

It is assumed that the elevator cage has moved up from the ground floor and is on the 13th floor. Since the follow-up device 5 is moved in a certain ratio proportional to the movement of the elevator cage, its central display part is in a position that corresponds to the 13th floor in the floor control device: the numbers on the right-hand side of FIG. 1 correspond to the floor numbers. The follow-up device 5 thus assumes the position shown by the solid lines in FIG. 1. The forerunner 7 remained in the position corresponding to the 13th floor - shown in dashed lines - until the elevator cage moving from the bottom to the upward and thus the follower device 5 stops in the 13th floor position. The reference symbol T denotes this position of the forerunner 7. When the upwardly moving elevator cage stops on the 13th floor and the central part of the follower device 5 coincides with the forerunner 7 in position T , the forerunner 7 moves in the direction of the arrow compared to the follow-up device 5 in advance upwards. The forerunner 7 continues its upward movement until it has reached a position corresponding to an upper floor, from which a call signal has been emitted. Therefore, if z. If, for example, an “up” signal marked by the symbol Δ has been emitted from the hall on the 21st floor, the upward moving forerunner 7 stops in the position corresponding to the 21st floor. As a result, the floor at which the elevator cage is to stop next is determined and the floor position is saved. During the upward movement of the precursor 7 e / a detector on the precursor 7 successively detects elements which are arranged in the positions corresponding to the floors on the frame of the floor control device, means for counting the elements detected by the detector being provided. This count corresponds to the next distance to be covered from the elevator cage.

It is well known that the maximum speed of an elevator car depends on the travel distance depends, d. H. the number of floors to be traveled through. For example, if a lift cage is mil an operating area of more than 10 floors and a maximum speed of 360 m / min au! a speed of 90 m / min, 120 m / min unc

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150m / min accelerated when, for example, from Ground floor to second floor, third floor and fourth floor starts, then the top speed of 360 m / min can only be achieved if the elevator cage moves from the first floor to the 11th floor, for example. Floor and above can drive without stopping at intermediate floors. This will necessarily be determined by the operational requirements, such as, among other things, the need of passengers for one comfortable ride and the distance necessary to accelerate and brake. Suppose a Such an elevator cage is provided by the in FIG. 1 control unit shown is controlled, then he is instructed to to drive at a maximum speed of 300 m / min, because the number from the detector on the forerunner 7 detected elements 8 and the elevator cage has to cover a travel distance from the 13th to the 21st floor has. Accordingly, the first function of the floor control device is to record the driving distance between the elevator car and the call floor as well as the determination of the maximum speed, with which the elevator car should travel to reach this floor.

The elevator cage leaving the 13th floor is accelerated to the speed of 300 m / min during its upward movement and gradually decelerated. The follow-up device shown in Fig. 1 is moved to the forerunner 7, which is in the fully extended position shown. It is well known that the braking command for the elevator car is a function of the position in order to largely eliminate errors in landing on the floor. The curve shown on the left-hand side of FIG. 1 corresponds to the course of the deceleration of the elevator cage with the relationship shown in solid lines between the position of the precursor 7 and the position of the follower device 5. The elevator cage is gradually braked in the manner shown by the curve when a series of detectors 38 of the follower device 5 is moved past the detection element attached to the precursor 7. As a result, the idler device 5 and thus the elevator cage 4 is stopped as soon as the idler device 5 is moved upwards into a position in which its central part corresponds to the forerunner 7, as can be seen from the delay curve. In fact, a position detector arranged in the shaft detects the position of the elevator cage immediately before the cage is stopped so that it can be stopped precisely in the predetermined position. Therefore , the second function of the floor control device is the generation of a delay curve relative to the position of the elevator cage. The follower device 5 can also be used as an indicator showing the cage position, but this is not an essential function of the floor control device

The general conception of a floor control device can be understood from the above description; but an important problem described below has arisen in recent years because of the Development of ever larger high-rise buildings in recent years are necessarily elevators required to operate a longer distance, which inevitably drive at a higher speed have to. It is quite natural to drive a long distance also leads to a significant increase in the height of the floor control device

The control device shown in Fig. 1 differ! differs from a really executed one because F i g. I only a schematic representation of the structure of such a Slockwerk control device reproduces. Especially when the in F i g. 1 on a reduced scale The division between the floors shown would correspond to the illustration, the floor control device would have to become excessively spacious, as can be seen from the position of the follow-up device 5, if

ίο the elevator cage on the ground floor or on the 25th floor persists. As from the dash-dotted position of the one corresponding to the 25th floor Position standing Millaufvorrichtung 5 shows, the floor control device must in reality a have disproportionately large vertical heights, which are considerably greater than the distance between the The first floor and the 25th floor, which corresponds to the actual route on the reduced scale.

Another difficulty is due to the fact that the increase in the maximum speed also leads to a higher floor control device. As shown in FIG. 1 Embodiment of a known floor control device becomes clear, the forerunner 7 does not need any calls on the route from the ground floor to the 25th floor and can only respond to one or more calls that are released in the area from the ground floor to the 10th floor when the elevator is in First floor stands. This is because determining the operating speed of the Elevator cage is only required if the elevator cage, for example, from the ground floor to the 10th floor or a lower floor as the elevator is designed to reach its maximum speed of 360 m / min only achieved if he z. B. from the ground floor to the 11th or an upper floor moves.

From the above example it is clear that the number of floors up to which the precursor 7 should advance, inevitably increases when the maximum speed of an elevator exceeds 360 m / min. For example, if the elevator is designed for a maximum speed of 540 m / min. then this maximum speed can only be reached

if, for example, he drives from the ground floor to the 17th or a floor above, provided that the speed can be increased by 30 m / min from floor to floor. The driving speed must therefore depend on

can be determined by the travel route if the elevator is in an area of less than 16 floors is operated.

The precursor must 7 up to a position above the position of the idler device 5 addition to consequently

16 can have a corresponding amount νοΓ floors.

Transferred to Fig. 1 , this results in a considerable lengthening of the tracking device in the vertical direction, as a result of which the height of the control device is considerably up to a value which is more than twice as great as the maximum speed of 360 m / min

The invention creates an improved control device of a significantly reduced degree shall explain the principle of the invention using * k $ to be discribed:

A pair of auxiliary precursors 42U and 42D precursors 7 fixedly mounted to provide ringing signals

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top and bottom floors / u capture, au! which the forerunner 7 no longer addresses. The length of the arm for these auxiliary precursors 42 (/ and 42D) is chosen so that they cover an area which is greater than the range of the precursor 7. The precursor 7 <> in the known control device according to FIG is limited in its movement, so that it can only advance as far as a position corresponding to the second floor when the follower device is in the position corresponding to the ground floor a movement of the forerunner 7 to a position corresponding to the 12th or an upper floor when the follower device 5 is on the first floor, the follower device 5 and the precursor 7 in Fig. 2 are completely the same as those in F. i g. 1 shown.

The following case:

The elevator is on the first floor, and there are "open" calls from the fourth and 19th floors. Since the elevator is on the ground floor, the tracking device 5 also reproduces the corresponding position in the control device on the ground floor. The forerunner, which has been in the ground floor position until then, starts before the upward movement of the elevator upwards to the; -. Capture calls from the upper floors. At the same time, the auxiliary forerunner 42 U. starts to record the calls from the top floors, including those from the 12th floor. Since in this case calls (1) and (2) were only emitted from the fourth and 19th floors, the forerunner 7 detects the call (1). Before the auxiliary forerunner 42i7 detects call (2). Therefore, the forerunner 7 stops in the position corresponding to the fourth floor due to the call (1) as in the known control device. The auxiliary precursor 42LJ can thus no longer move upward and the call (2) is thus not detected. If several calls are made in this way, of which the forerunner 7 determines only one before the auxiliary forerunners 42 U and 42D detect other calls, then this call would first be served by the elevator cage, and the elevator starts itself together with the traveling To move the device 5 upwards against the forerunner 7, which is in the position corresponding to the floor from which the call was made.

Next operational case:

"Open" calls (3) and (4) are issued from the eighth and 14th floors. In this case it should be the elevator first to the eighth floor and after its stop on the eighth floor as well as during an attempt to Moving detection of other calls to the next upper floor from which a call was made.

Back to FIG. 2: the precursor 7 and the auxiliary precursors 42 (J and 42D move upwards, and the call (4) from the 14th floor is first picked up by the auxiliary precursor 42U, however the precursor 7 does not stop and continues As soon as the upwardly moving forerunner 7 has reached the position corresponding to the eighth floor - as shown by 7 "- it stops in this position by detecting the" up "call (3) from the eighth floor A circuit is so arranged that a memory in a memory circuit for previously detecting other call signals by the auxiliary precursor 421 / is cleared when the precursor 7 detects the call as described above, so the elevator starts ascending

move the eighth floor in the manner described above. After stopping on the eighth floor begins again a call detection by the elevator, and this moves up from the eighth floor up to the floor from which the other call came.

In this way, the auxiliary precursors 42LJ and 42D detect a call from a position which cannot be detected by the precursor 7 in order to carry out a high-speed operation. After another call is detected by the forerunner 7, the memory in the memory circuit is cleared as a result of the detection of the calls by the auxiliary forerunners 42U and 42D. If z. If, for example, only calls (2) and (4) are generated, the forerunner 7 cannot detect these calls, even if it has run up to the top position on the follow-up device 5. Only in such a case are the stored call signals (2) and (3) forwarded from the memory circuit and the operating speed of the elevator determined accordingly so that the elevator can move at a suitable speed in accordance with the first detected floor call.

As shown in Fig. 2, such an arrangement is advantageous in that the calls can be detected over an area which is more than twice the length of the guide 8 for the follower device 5, this follower device 5 being the same size like the one according to FIG. 1 and can control the operation of an elevator designed for very high speeds. As also from FIG. 2, the total size of the floor control device is small because the auxiliary forerunner 42D is arranged opposite to the lower support member for the follow-up device 5 in the known floor control device ¹ :. even if the precursor 7 is in a position corresponding to the ground floor.

In the known floor control device shown in Fig. 1, many detectors 38 are arranged on the opposite side of the follower device 5 in the forerunner 7 in order to obtain the course of the deceleration for the elevator. For a route area enlarged according to the invention, however, it is impossible to obtain the deceleration profile with such an arrangement, because with the subject matter of the invention the deceleration profile is also necessary in the area extending beyond the length of the follow-up device 5. In the invention, the course of the deceleration is determined in a manner similar to that in the embodiment according to FIG. 1 when the traveling speed of the elevator is relatively low. At a higher speed, however, the desired distortion curve is generated by the combination of a group of additional detectors arranged on the follow-up device 5, which are opposed to a group of switching elements on the frame of the device. Specifically, since the deceleration profile cannot be generated on the basis of the positional relationship between the follower device and the precursor when the elevator travels a distance greater than the distance corresponding to the length of the follower device 5, there is a group of detectors for generating the delay curve for high-speed operation (long route operation) ar of the tracking device 5 in the end area of the tracking device 5 in a ratio corresponding to the floor positioner, and a group in front of switching elements for displaying the retrieved floor

1 509 632/191

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works is to frame the device in accordingly arranged peepholes attached. These switching elements are provided for all floors, so that after the next floor to be served by the elevator has been detected by the call detection effect of the forerunner or the auxiliary forerunner that this floor corresponding switching element can be detected alone. As a result, the braking or Deceleration scheme for the elevator can be generated over the entire speed range, though the idler device 5 has only a small size.

An embodiment of the invention is shown in detail with reference to FIGS. 3 to! 5 described.

3 is a perspective view of a floor controller according to the invention. A drive belt 1 is connected to the elevator car and is driven at the same speed as this elevator car. A driven gear 2 one - not shown - reduction gear runs at a lower speed. that of the driving speed of the elevator is proportional. Between this gear 2 and an idle gear 3 is a Drive chain 4 tensioned. A follower device 5 can be moved vertically on a guide rail 6 held and driven by the chain 4 so that it moves vertically at the speed of travel of the elevator cage executes proportional speed. A precursor 7 is vertically movable on the follow-up device 5 is provided. A guide rail 8 for the vertical movement of the precursor 7 is of holding members 9 which protrude from the follower device 5. held. The precursor 7 is attached one end of a chain 10. which runs over a wheel (not shown) and at its other end a counterweight wearing. A motor 11 is for generating the vertical movement of the precursor 7 is mounted on the idler device 5 via a rack and pinion drive (not shown).

An oscillator 12 is mounted on the tracking device 5 for detecting the position of the tracking device 5 and a receiver 41 for detecting the deceleration point. The oscillator 12 consists of a pair of opposing oscillating units \ 2L and 12 /?. The receiver 41 consists of two groups of receiver units 4 \ GU and 4ICD for receiving a signal during the respective upward and downward movement of the elevator. A small solid-state oscillator is in each of these oscillating units 12 /. and 12 /? used and transmits continuously without any operational disruptions, even under unfavorable conditions. A small solid-state receiver is built into each of the receiver units 41 GU and 41CD, so that each receiver unit picks up a signal from one of the oscillating units 41A " described later and only passes this signal into a control circuit when the receiver unit faces the oscillating unit

Oscillators 13 and 42 are attached to the precursor 7 to determine its position. The oscillator 13 is divided into a pair of upper oscillator unit \ TO and a lower Osziliatoreinheit 13 £>. The oscillator 42 consists of a pair of vertical, spaced apart oscillating units 42 U and 42 £>. These oscillating units 42i / and 42D are separated vertically by a suitable distance from the oscillator 13 so that they can advance relative to the precursor 7 on the follower device 5 (auxiliary precursor).

A variety of links 41.Vf / 41AD. 14. 15 and 42.V are attached to the frame of the floor control device in a position corresponding to each floor to be served by the elevator. The stationary limb

^ 14 obtained from pairs of receiver units 14 /. and 14 /? which are arranged in two vertical rows opposite the respective oscillating units 12L and 12 /? are arranged, each pair of these receiver units 14 /. and 14 /? in one of the floors corresponding to each

ίο position is arranged. The location of these receiver units 14L and 14 /? is adjustable in the vertical direction. The stationary members 15 and 42A ″ are receiver units arranged in a position corresponding to each of the floors. The stationary members 41A7 / and 41AD are oscillating units that are inomicrt with respect to the corresponding receiver units 41Ci / and 4IGD on the frame of the control device and the number of which corresponds to the number of floors Oszilliereinheiten 4IA'i / and 4iAOsind but not exactly located in the each of the floors corresponding position, but they are of the exact landing position by a predetermined amount, respectively downward and upward offset. Since only one of the kits of the stationary members 14, 15 and 42A ' correspond to only one floor according to FIG. 3, the number of kits of these members is equal to the number of floors approached by the elevator. Every time the elevator reaches one of the floors, the specific stationary members or the reception

anneal 14, 15 and 42A " opposite the movable members or oscillators 12, 13 and 42 so that an output signal from these stationary members 14, 15 and 42 becomes XeTZeUgI.

The relationship between the stationary members or oscillating units 4iXU and 41AO and the receiving units 41GiV and 41 GD is such that the oscillating unit 4iXU is crossed by the receiving unit 41 GU at a certain point below each floor level when the elevator is moving upwards, and the oscillating unit 4 \ XD is crossed by the receiver unit 41CD at a certain point above each floor level when the elevator is moving downwards, so that exit signals appear successively from the receiver units 41 GU and 41CD depending on the direction of movement of the elevator. These movable and stationary members thus work as non-contact position detection members.

The movable links 13 and 42 provided on the forerunner 7 have advanced beyond the actual position of the elevator, since the forerunner 7 is driven by the motor, and the forerunner 7 stops in the position corresponding to the floor from which the call was made. The movable members 12 and 41 on the follower device 5 follow the movement of the movable members 13 and 42 with an appropriate delay. Furthermore , contactless determination elements described in more detail below are used to detect the difference between the relative positions of the

Forerunner 7 and the idler device 5 provided and designed for vertical movement in synchronization with the elevator movement

A magnet 19 is mounted on the running device. By exciting this magnet 19 is a

Armature 20 is attracted and makes a pivoting movement about a pivot 21. As a result, a larger part 22 of the armature 20 is against stop members 25 and provided on angle levers 23 and 24 (FIG. 4)

26 gecirücki and a rotation of the crankshafts 27 and 28 in a clockwise or counterclockwise direction is generated. Engaging members 29 and 30 held by the forerunner 7 are thereby rotated clockwise and counterclockwise, respectively, and tension a return spring 31. A rod 32 extends vertically in the housing of the floor control device, on which locking members 33 are mounted in positions that correspond to the actual floor level served by the elevator correspond, although only one of these locking members 33 in F i g. 3 is shown. In Fig. 4 is an enlarged perspective view of individual parts of FIG. 3, denoted by the same reference numerals as in FIG. 3 have been identified and described. A horizontal mounting arm 35, on which an oscillating unit 36 of a contact! * - on switch is mounted, extends on the forerunner 7. A holding pad 37 is attached to the follower device 5 and carries a series of receiver units 38 arranged opposite the oscillating unit 36. The oscillating unit 36 and the receiver unit 38 are in the form shown in FIG. 5 for detecting the distance D between the idler device 5 and the forerunner 7. During the downward movement of the elevator, the oscillating unit 36 carried by the forerunner 7 runs upward into a position corresponding to the floor called up. Then the receiving units 38U9 ... 3SU 1 carried by the tracking device 5 are successively brought into opposition to the oscillating unit 36 with the warming-up movement of the tracking device 5, and as soon as the elevator stops in the destination floor, the oscillating unit 36 takes the neutral position Can. During the downward movement of the elevator, the oscillating unit 36 carried by the precursor runs downwards, and then the receiver units 38D9. 36 brought. The oscillating unit 36 and the receiver units 38 form a device for detecting the relative position, which device determines a delay signal from the distance between the follower device 5 and the precursor 7. Receiver units 38 UL and 38DL are arranged at the opposite end portions of the vertical advance movement of the precursor 7 relative to the follower device 5, so that the oscillating unit 36 can face these receiver units in such extreme positions.

6 shows the arrangement of the oscillating unit 4IXU, 4iXD and the receiver units 4 \ CU and 41GD: The oscillating units 41Xi / and 4 \ XD are mounted on the frame of the device in a number corresponding to the number of floors. One or one of these oscillating units 4tXU and 41A ^- D only transmit when a call or calls are issued from the corresponding floor (s), the remaining oscillating units - as described further below - not transmitting. The oscillating units 4iXU and AiXD are used to determine the relative positions between them and the follower device 5

If the elevator is designed for a high speed of e.g. B. 540 m / min, is designed then a distance of about 5Gm required to slow down. Provided that a reduction ratio of 1: 100 is used, a braking distance of approx

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500 mm required in the floor control device. The means that Din F i g. 5 be larger than about 500 mm got to. If vertical movement is taken into account, a distance of at least 2 D is required, s and this distance is at least about 1.0 m. The guide rail 8 for the precursor 7 must accordingly have a greater length, so that the extent of the floor control device increases accordingly. Around according to the invention to eliminate this disadvantage is

ίο the in Fi g. 5 selected amount Ddic half of the distance which is required as a braking distance for the elevator traveling at high speed of / .. B. 540 m / min, the oscillation units 41 XU, 41A ^- D and the receiver units 41GL /, 41GD to compensate

is used to reduce the distance D.

It is assumed that an elevator serving 40 floors of a building is on the ground floor and a call has been made from the 35th floor. In this case, the oscillating unit 41 Ai / 35 corresponding to the 35th floor responds, and the elevator begins to move up to the 35th floor. During its upward movement, the receiver units 4IGUn ... 41GLM are successively brought into opposition to the oscillating unit 41.Y // 35 and the relative positions of the 35th floor and the elevator cage are detected for braking. The forerunner 7 has advanced to stop in the position corresponding to the 35th floor. Thereafter, in the receiving units 38 (79 ... 38 (71) one after the other, they are juxtaposed with the oscillating unit 36 according to FIG It can be seen that the braking or deceleration scheme is generated by the combination of the oscillating units on the frame of the control device and the receiving units on the tracking device in the route area in which the elevator cage is still sufficiently far away from the destination floor and at high speed travels, while in the slow speed range in which the elevator cage reaches the relatively close zone of the destination floor, the delay scheme is generated by the combination of the oscillating unit on the forerunner 7 and the receiver units on the follower device 5. As shown in FIG a faceplate detector 39 attached to the support arm 35 of the precursor 7, which together with in a A vertical series of shielding plates 43 arranged vertically in the housing rod 40 forms a zone position detector 44. The number of these shielding plates 43 is equal to the number of floors of the building, although only two of them are shown in FIG. 4 are shown. Since the shielding plates 43 are arranged in positions corresponding to the floors, an output signal is generated by the shielding plate detector 39 during the period in which the precursor 7 is located in the predetermined zone including the corresponding floor

F i g. 7 shows the schematic construction of the zone position detectors of 44. If 43 is not engaged in the gap between a feedback coil L3, and an input coil L i, the shielding plate, these coils L 3 and LX magnetically coupled and an output signal occurs at a downward coil L 2. Therefore, no output signal appears at an output terminal E (Q) of a logic circuit 44L, and an output signal appears at another output terminal.

Conclusion C (O) of logic circuit 44 /. on. When the shielding plate 43 is inserted into the gap, the magnetic coupling between the coils L 3 and L2 is substantially reduced and no output signal appears on the output coil L2. In this case, there is an output signal at the output terminal E (O) and no output signal at the output terminal C (O).

F i g. 8 shows the output waveforms of the zone position detector 44 and a waveform converter in a control circuit described later for Generating a speed command in response to an existing exit reading from the zone position detector.

Fi g. 9 shows the relation between the members for determining the position in the follower device 5 relative to the position of the precursor 7 and members for generating such a braking signal which cannot be obtained with the members for relative position determination, depending on the relationship between the shield -Plal'en-Deiekfor 39 and the shielding plates 43 and on the positional relationship between the follower device 5 and the oscillating units 4iXU and 41 AD. which is mounted on the frame of the floor control device. In Fi g. 9 only the links associated with the upward movement are shown. The detection of the relative positions of the precursor 7 and the follower device 5 and the mode of operation of the zone position detector 44 consisting of the shielding plate detector 39 and the shielding plates 43 have already been described.

The receiving units 4ICi Ί to 4 \ GUn according to FIG. 9 are used to output a braking signal during the downward movement of the elevator. In this embodiment, for example, l are the Empfangsein hciten 41G £ / 4. 41Gi73. 41GL'2 and 41Gi / l for issuing a brake command to brake from the elevator speed of 450 m / min. 420 m / min, 390 m / min and 360 m / min are mounted on the idler device 5 at suitable predetermined intervals. These receiving units 41 GU are arranged opposite the oscillating units 41 XU , the number of oscillating units 41 XU being equal to the number of floors. The receiving units 41 Ci ^ determined during the upward movement of the elevator cage are offset by a certain amount from the position corresponding to the floors of the building.

It is assumed that the elevator cage is on the ground floor and a call is made from the 40th floor. It is also assumed that the elevator moving from the 1st floor up to the 40th floor due to the call mi! travels at a speed of 450 m / min after its acceleration. On the basis of the detection of the call by the elevator, a circuit described later for generating a braking command is completed and only the oscillation unit 41 XU 40 corresponding to the 40th floor is energized. During the upward movement of the elevator, a deceleration command to reduce the speed of the elevator from 450 to 420 m / min is generated when the receiving unit 41Gi / 4 is brought into a position opposite the oscillating unit 41Λ7 / 40. The receiving unit 41Gi / 3 then arrives in opposition to the oscillating unit 41. XU 40. and a braking command to reduce the speed from 420 to 390 m / min is generated. In this way, the receiving units 41 (7 / '4 to 41Ci / 1 are successively opposite each other: to c'. 'R on the 40th floor from which the call is brought to the corresponding Os / illi unit 41 XU 40, so that the elevator speed reduced to less than 360 m / min. As soon as the forerunner 7 has advanced to the position corresponding to the 40th floor, the magnet 19 is de-energized, and the engagement member 29 engages the holding stop 33 corresponding to the 40th floor and thereby holds the forerunner 7 correspond to this 40th floor

ίο the position. When the follow-up device 5 then moves upwards and reaches the point at which the elevator speed is braked to less than 330 m / min, the receiving unit 38i / 9 arranged on the follow-up device 5 comes in opposition to the oscillating unit 36 on the precursor 7 - as in FIG. 5 described -. and a brake command is generated. In this way, braking signals are successively generated by the receiving units 38 (78 ... 38i71 and the elevator gradually slowed down until it reaches the 40th floor.

Fig. 10 shows a control circuit for generating the speed command signal using the output of the zone position detector 44 described in Figs. 7 and 8. This detector gives its output to a waveform converter Af. The input and output waveforms of this converter M are shown in Fig.8. The output signals present at the output connections U and V of the converter M are sent to the control elec-

_io trodc from thyristors THYX to THYU. Speed Commands 21F to 33F provide a signal to an elevator speed control system in response to its energization to control the speed of the elevator.

is For a better understanding it is assumed that the speed command relays 2XF.22F, 23F. 24F. 25 F. 26F 27F. 28F 29 F. 3OF. 31F. 32Fund 33F for issuing speed commands of 90,120,150,180,210. 240, 270, 300, 330, 360, 390,420 and 450 m / min

A ° are. Another speed command relay 20F supplies a signal to the speed control system for a slow acceleration of the elevator when the elevator starts «. This relay 20F is de-energized because of an open contact LS when the gradually braked elevator reaches a point which is in a predetermined distance from the destination floor. The operation of contacts 9OF 90 /> and 90C will be described later.

Fig. 11 shows a delay control circuit.

Brake command relays 21 £> to 33D in this circuit control the speed command relays 21F to 33F according to Fig. 10. Thyristors THYUl to THYU9 and THYD 1 to THYD9 are controlled by the respective receiving units 38i71 to 3SU9 and 38 D 1 to 38D9 , which on the basis of FIG. 5 and 9 have been described. The remaining thyristors THYl ¹ XO to TWKi; 13 and THYDiObh THYD 13 are controlled by the corresponding receiving units 41G (71 and 41 Ci'4 and 41GD I to 41 GD 4, which on hand

to the F i g. 3 and 6 have been described. It can thus be seen that the delay ^{command 1} successively reaches the control electrode of the thyristors THYUM, TIiYI '12 ... TIiYU 1 and the braking Rclais Ϊ3 / Λ 32A) ... 2 \ D successively to the gradual

"^ '\ bbrenr.en of the elevator become live when the elevator with a speed of 450 m / m in upward falls >> ·.

! -i μ. 1 2 shows parts ci "-c. Rclais-Steuerkrc-iscs; m-

lo

Control of a group of floor relays 3014, 3024 ... 3094, 3104 ... 339.4 and 3404. Thyristors THYEX to THYt 40 are controlled by the receiving units 42A, which generate a signal when they are facing the Os / illi unit 42i / or 42O. which - a vorbcstimintc distance from the osc - as shown in Figure ^3: 'iator 13 removed.. The oscillating unit 42 // is energized when the elevator is moving downwards, whereas the oscillating unit 42D is only energized when the elevator is moving upwards. The number of entrance units 42A is equal to the floor number. where the one for the first floor is indicated here by 42A'1. while those for π floors are denoted by 42An.

Assume, for example, that the elevator is programmed to move upward and that the precursor 7 is in the position corresponding to the ground floor with the auxiliary precursor oscillating unit 42iV facing the receiving unit 42A10, thereby energizing the call detection relays 90i 'and 90F described later will. In this case the thyristor THYEXQ is switched on to the 10th floor relay 3104 in fig. 12 / u excite. Then, when the forerunner 7 advances a certain distance upwards and reaches a point near the position corresponding to the second floor, the relay 3114 is energized. It is arranged in such a way that the excited floor relay only holds itself due to the excitation of the call detection relay and the remaining floor relays remain de-energized. A contact 15Z is only closed when the elevator is in operation.

Tig. 13 shows a floor relay control circuit for controlling another group of floor relays 301, 302 ... 339 and 340. Thyristors 77VVCIbIS TH) G 40 are controlled by the group of receiving units 15-1. 15-2 . As in relation to FIG. 5, the oscillating unit 36 is brought into opposition to the receiving unit 3SUL when the forerunner 7 advances to the uppermost end of its range of motion in which the forerunner 7 on the follower device 5 is movable. When the oscillating unit 36 reaches such a position, a thyristor THYFm Fig. 13 is controlled by the receiving unit 3SUL to energize a relay 90P.

It is assumed that the elevator located on the ground floor starts up to the 39th floor from which a call has been made. Before the precursor 7 is advanced. ie when it assumes the position corresponding to the ground floor, the oscillating unit X3U mounted on the precursor 7 and excited during the upward movement of the elevator faces the receiving unit 15-1 of the group of receiving units 15 corresponding to the ground floor, and the milfs precursor oscillation unit 42i ■ ' faces the receiver unit 42A10 corresponding to the 10th floor. Thus, the floor relays 301 and 3104 in FIGS. 1J and 12 are energized. D ₁ Is Relay 90P is still in the non-excited state ·.!. because the forerunner 7 has advanced to 111 its uppermost end position. The excitation of the StI) CkULTkSIcI ₁ IiS 310 4 leads Z; ir excitation: fr, Jes floor relay. 310. uci! Jas later K'sehneherie Rui- | jf, issiii! L'srt '!. Iis 90 /' new II flour excited> M. "as long as! he precursor 7 has reached his" hcrMc i'.ndnosnion r. ,, ^ '. i ; ii,.! n and the relay 90P remains energized, the floor relays in FIG. 13 excited one after the other, since the receiving units 15 and 42A ”successively protrude from the oscillating units 15 and 42i / gc.

In the area in which the precursor 7 is advanced by a distance which e.g. B. corresponds to 9 floors relative to the tracking device 5, one of the floor relays is energized, the corresponding receiving unit 42A 'of the Os / .illic unit 42U is opposite (Fig. 12). and two of the floor relays are also energized (Fig. 13). whose corresponding receiver units 15 and 42A are opposite the oscillating units 13c / and 42i7. Then, when the precursor 7 has advanced to the certain uppermost end and the oscillating unit 36 is opposed to the receiving unit 3SUL , the thyristor THYF is turned on to energize the relay 9OP (Fig. 13). By energizing this relay 9OP, the floor relays 301, 302 ... 340 are de-energized (FIG. 13). even if the receiving units / 5 supply the signal / ur control electrode of the thyristor THYG. Therefore, only one of the floor relays 3014. 3024... 3404., which correspond to the receiving unit 42A with respect to the oscillating unit 42i ', is excited (FIG. 12). whereupon only a single one of the floor relays 301, 302 ... 340 corresponding to the same floor is excited (FIG. 13). After the precursor 7 has reached its predetermined uppermost end position on the follower device 5 and the relay 9OP has been energized. If the motor II is de-energized, and the follow-up device 5 moves upwards, the existing distance / between its central part and the forerunner 7 being maintained.

If the oscillating unit 42 (7) mounted on the precursor 7 is opposite the receiving unit 42A 39 corresponding to the 39th floor, the thyristor THYE39 is switched on and energizes the floor relay 3394 in FIG. 12 and the floor relay 339 in FIG. A call detection relay 90F is energized in a circuit described later to form a latching circuit for the floor relay 3394, the floor relay 339 falling due to the energization of the call detection relay 90S.

When the oscillating unit X3U mounted on the forerunner 7 faces the receiving unit 15-39 corresponding to the 39th floor due to the upward movement of the elevator to the 39th floor, the thyristor THYG30 in FIG To excite the floor relay 3394, which holds itself until the elevator stops in the destination floor.

Fig. 14 shows circuitry for controlling call detection relays 90C and 90F. Contacts 501 to 540 corresponding to floors I to 40 are selectively closed as soon as a call has been made from the corresponding floor. The reference numerals 301 to 340 and 3014 to 3404 identify the contacts of the floor relays 301 to 340 and 3014 to 3404. A thyristor THYH is only switched on when the shielding plate 43 is in the zone position detector 44 in the position shown in FIG. 7 is the position shown. The call detection relay 90 / - "is excited by detecting a call by the floor relays 3014. 302 Λ .. 3404, which are controlled by the oscillator 42 mounted on the forerunner 7, since the auxiliary oscillating units 42 / 'and 42D in be ■ -i'nMiiten positions vertically from the center thin.

Precursor 7 are befcsirji. In undecided words this call detection relay 9OF initially energized as soon as a call is made from a floor. which is more than 9 floors away from that person. in which the basket is currently located. The call determination relay 9OC is energized as soon as the The forerunner has reached the position corresponding to the floor from which the call was made. and the basket can stop on this floor. By energizing this relay 90C, the magnet 19 turns into F i g. 3 de-energized, as a result of which the armature 20 falls and the larger part 22 of the armature moves backwards 20 crfoigi. As a result, the crankshaft 27 rotates counterclockwise and the engaging element 29 engages the locking member 33 corresponding to the target floor for stopping the leader 7 at the target floor corresponding position.

15 shows a circuit for exciting the Os / illierei.iheiten 41 Af shown in FIG. 9, which are effective for the downward movement of the elevator. Although the Os / illing units 4IJVD for the downward movement are not shown in Fig. 9 for the sake of clarity, it is clear that these units 4IAD are arranged in the same way. These Os / illiinfviten 41Ai / are excited as soon as the elevator travels upwards at a speed greater than 360 m / min. If z. B. the elevator is programmed to travel over more than 9 floors. relays 9OP and 90F are excited. to activate the oscillating unit 41 XUn , which corresponds to the floor where the elevator cage is to stop. A contact 15Zw is only closed when the elevator cage is moving.

The elevator control works according to the invention in the Wcsc described below:

It is assumed that the elevator is on the ground floor and a passenger waiting on the 39th floor presses the call button on the 39th floor or that a passenger in the lift basket presses the button corresponding to the 39th floor. By operating the button, the call detection relay 90F is energized by a circuit (not shown) and the contact 539 in FIG. 14 is closed. Since the elevator cage stops on the ground floor, the shielding plate 43 corresponding to the ground floor is opposite the shielding plate detector 39, as can be seen from FIG. A selector, not shown, for the direction of travel is excited because the call was made from a floor above the floor. in which the elevator cage is located, and generates a signal for the upward movement of the elevator. The contact 15Z is closed and the one shown in FIG. The motor 11 shown in FIG. 3 is driven in the normal direction in order to advance the forerunner 7 with respect to the follower device 5. By closing the contact ISZ, the speed command relay 20Fin FIG. 10 energized and a reset signal generated for the waveform converter M so that the elevator is now ready to travel upwards.

The forecourt 7 begins to move upwards on the follower device 5, and as soon as the shielding plate deector 39 moves out of the area of the shielding plate 43 corresponding to the ground floor, there is a reversal in the detector outputs at the output ends / T (O ) and Co). however, there is no change in the output signals at the output terminals V and V of the waveform converter M ■. Therefore, only one output signal appears in the output terminal f of the comerter Xf. which reaches the control electrode of the thyristors THY , the relays 21 and 30F only being energized if the connections are interrupted. When the shielding plate detector 39 is brought into opposition to the shielding plate 43 corresponding to the second floor as the forerunner 7 advances. the output signals appearing at the connections and V of the waveform converter Λ7 are reversed, so that the relays 22F and 31F are now optionally excited ίο.

In this way, the "on-off" of the output signals of the shielding plate detector 39 is repeated one after the other, resulting in repeated "on-off" signals at the output terminals and V of the waveform converter M when the detector 39 contacts the Shielding plates 43 moved past the successive floors. The speed command relays are thereby energized one after the other and hold themselves in the manner 21 and 3OF 22F and 31F, 28F and 32F ... These speed command relays 21F. 22F ... are intended solely to determine the maximum speed of the elevator. Integrators (not shown) are used to gradually accelerate the elevator in order to give the passengers a comfortable ride. The speed of the elevator finally reaches the value set by these speed fault relays.

In addition, the floor relays 301, 30 and 310 are during the movement of the precursor 7: 302, 31M and 311 ... excited one after the other, as if on hand 12 and 13 described. (For the description it is assumed that the floors in the building are each separated by the same amount. However, the floor distances can also be different.) If the precursor to the the predetermined uppermost end of its range of motion has moved up to the follower device 5, the relay 9OF is energized, as shown in FIG. 13 described. Relays 30F and 33F remain energized until that relay 90P is energized because contacts 90C and 90F of call determination relays 90C and 90F closed remain (Fig. 10). The speed of travel of the elevator is therefore determined so that he with his Maximum speed of 450 meters per minute travels.

The floor relay 339.4 is excited - as described with reference to FIG. 12 -. when the oscillating unit 42f mounted on the precursor 7 is brought into opposition with the receiving unit 42X39 corresponding to the 39th floor. By energizing this floor relay 339/4, the floor relay 339 in FIG. 13 and also the call detection relay 90F (FIG. 14) are excited. The floor relay 339.4 maintains itself as a result of the excitation of the call detection relay 9OF and the oscillating unit 41A "f 39 corresponding to the 39th floor is thereby excited (FIG. 15). When the elevator moves upwards, the receiving unit 41Cf 4 is first in opposition described for the oscillating unit 41Xf 39 and thereafter, the receiving units 41 CF 3 successively also brought into opposition to the oscillating unit 41 XU 39 as g with reference to F i. 6,. Accordingly, 31 D and 30D, the Hrems command relay 33D. 32D. successively energized at predetermined deceleration points II ₅ , as described with reference to Fig. 1. As a result, the speed command relays 33 /: 52 /: 31F and 30F in Fig. 10 are de-energized one after the other, and the elevator is slowed down, finally

the oscillating unit 13U on the forerunner 7 is brought into opposition / ur the receiving unit 15-39 corresponding to the 39th floor and the auxiliary call detection relay 90S is energized by a circuit, which of the positive connections

P- 90S- 339 A - TH YG 39

/ u to the negative terminal N in FIG. 13 is formed so that the call detection relay 9OC ″ in FIG corresponding stop 33. to stop the Yorlauff-r 7 in this position corresponding to the 39th floor.

The excitation of the call detection relay 9OC leads to the closing of the contact 90C in FIG. 11. If during the downward movement of the elevator the oscillating unit 36 of the receiving unit 3SU9 in FIG. 9 and 5, the thyristor TH YU 9 is turned on to energize the brake command relay 29D in FIG. In this way, the relays 28D. 27D.
21 D energized in succession to relay 29F. 28F ... 21F to be switched off one after the other, whereby the speed of the elevator is gradually reduced and reaches a value of 90 meters per minute, which is determined by the relay 21F. When the upward moving elevator reaches a predetermined point below the target floor, position detection elements (not shown) in the shaft are energized in order to convey braking and stopping errors to the speed control system as a function of the distance / between the elevator car and the target floor, so that the elevator is braked and stops at the target floor.

The operation of the elevator control is now for the case in which the elevator cage is on the ground floor and a call from 11. Floor

The speed command relays are activated immediately one after the other when the forerunner 7 moves forward. When the forerunner has moved up from the position corresponding to the ground floor to a position corresponding to the 2nd floor, for example, the auxiliary forerunner oscillating unit 42 <7 on the forerunner 7 is opposite the receiving unit 42Λ "11 corresponding to the 11th floor, and the call detection Relay 90F is energized, which energizes the speed command relays 21 and 33F first and then the speed * command relays 20F and 31F the relays 23F, 24F ... 29f are energized one after the other with the advance of the precursor 7. The elevator therefore travels at a speed of 390 m / min call from the 11th floor is present, the RuI detection relay 90 is P 1 (13 Fig.) is energized, and the 11th floor corresponding Stockwerlisrelais 31M in Fig. 2 holds itself as described above. If the forerunner 7 has reached the position corresponding to the 11th floor, the relay '905 in FIG. 13 energized by the circuit which is from the positive terminal

P-S0S-3iiA-THYGU

to the negative terminal N , thereby energizing the ringing detection relay 9OC in FIG. The elevator will gradually slow down and reach the second floor in the one described above

IC

Wise.

Furthermore, the case is considered in which the elevator is on the first floor, cm call from the U. Floor takes place and another call is made from the 5th floor. which is in the range of motion of the forerunner 7 on the follower device 5 located. When the precursor 7 moves from the position corresponding to the ground floor in one of the has moved the corresponding position on the second floor. the. Floor relay 3114 in Fig. 12 and the Relay 90F in Fig. 14 energizes so that the floor relay 3114 holds itself. As long as relay 90F is energized. the speed command relays 20F 21F, 22F30Fund 31 Fin Fig. 10 excited. If the forerunner 7 has reached a position corresponding to the 5th floor. the floor relay 305 is through the Circle energized, whichever is from the positive terminal

P- 305-90 P- E5- THYG 5

to the negative terminal N in Fig. 13, these elements not being shown in Fig. 13, and the relay 9OC is energized by the circuit starting from the positive terminal

P- 15C-90C- THYH-90P- 3054-305-505
/ runs around negative terminal N in FIG. 14, these elements only partially in FIG. 14 are shown.

In the Zeus span, in which the precursor 7 to the 5th floor is the corresponding position Speed command relay 2OF. 21 F. 22F. 23F. 24F and 25 / as well as the speed Bel'ehls relay 30F. 31F. 32F and 33F were excited one after the other. However, because the forerunner 7 only has a four If the vehicle drives up the distance corresponding to floors, the relay 90P is not energized. Since also the speed digkeits-command relay 29F is de-energized, are the Speed command relays 30F to 33F de-energized due to energization of call detection relay 9OC. As a result, the speed command relays 2OF. 21 F ... 25F optionally energized, and the elevator travels at a speed of 210 meters per Minute. Because of the excitation of the call approval relay 9OC the elevator slows down slowly and stops on the 5th floor, which is evident from the description above can be seen. The operation of the elevator control for a downward movement of the elevator car is completely the same as that described for the upward movement, so a description thereof is unnecessary.

The distance required to brake and stop an elevator increases with an increase in speed to z. B. 450 or 540 meters per minute square. In addition, the leading distance of the precursor will also increase in the form of a square curve in order to control the travel operation of a high-speed elevator. In the invention, which avoids the undesired enlargement of these distances, the auxiliary precursor oscillating units 42iV and 42D are arranged in positions which are advanced with respect to the central oscillator 13 by approximately the maximum advance distance of the precursor 7, and the receiving units 41 GU, 41CrDsou ie the oscillating units 41A "(7 and 41 AO are provided separately in order to brake the elevator in the high speed range of more than 300 meters per minute, so that the speed setting up to / 11 a speed of 540 meters per minute can be carried out satisfactorily without the leading distance of the precursor 7 enlarged.

In addition 13 sheets of drawings

Claims (4)

V aten claims: 1. Elevator control with a floor control 'device which has a follow-up device running at a reduced speed proportional to the traveling speed of the elevator and a precursor arranged in the follow-up device, which is movable in an area corresponding to a certain floor number for detecting a floor call, characterized by a together with the precursor (7) at a certain distance from this movable hoof forerunner (42t / 42DJ ¹ ZU to detect a landing call outside the range of motion of the forerunner (7). Means for determining the travel speed of the elevator as a function of the position of the follow-up device ( 5) to the landing call entered by the auxiliary forerunner (42U 42D) or by the forerunner (7) and by memory elements (3OF ... 33F. 3OD ... 33DJ to store the position of the hi / fs forerunner (42 LJ. 42DJ upon detection of a call floor. 2. Elevator control according to claim 1, with means for displaying the landing calls in reduced size Scale on the frame of the floor control device, characterized in that the stored Position of the auxiliary forerunner (42t /, 42DJ at Detection of a call floor in relation to the position of the follow-up device (5), the driving speed of the elevator determines when the forerunner (7) has moved to an end position of its range of motion. 3. Elevator control according to claim I or 2, characterized in that means for erasing the memory elements (30F ... 33F. 30D ... 33DJ are provided for all previously stored positions, as soon as the forerunner (7) detects a landing call within its range of motion. 4. Elevator control according to claim I. characterized by a plurality of first, on the tracking device (5) arranged receiver units (38) for issuing individually different speed commands according to a predetermined deceleration curve at low driving speeds, by first, on the precursor (7) in each case opposite the first receiver units (38) arranged oscillating units (36) for displaying a call floor, through several second, on the Follower device (5) arranged receiver units (41GJ for the delivery of individually different Speed commands corresponding to a predetermined deceleration curve at high Travel speeds, by second oscillation units (41XJ. Each on the frame of the floor control unit compared to the respective second receiver units (41GJ and in one of the corresponding floor position in a reduced size Scale are arranged in a predetermined spaced-apart position for displaying a call floor, and through bodies (21D to 33DJ. the dependent from the first and second receiver units (38 or 4IGJ then generate delay commands, when the first and second receiving units (38 and 41GJ, respectively, the first and second Os / illi units (36 or 41 XJerfussen. The invention relates to an elevator control with a floor control device, the one with a reduced Speed proportional to the travel speed of the elevator running follow-up device and a precursor arranged on the follower device, which in a one certain floor number corresponding area for detecting a floor call is movable. Such a control device is also referred to as a floor dialing device and is present in all of them Types of elevator systems built in. A floor control device basically fulfills three functions: The The first function is to record the next call to be served for someone on one of the floors stationary elevator and in determining the appropriate operating speed. The second function is that Delivery of braking or deceleration commands of an elevator moving by a call command, so that this stops in the destination floor. The third function includes the display of the elevator position, the previous one Notification of the arriving floor and various other signal indicators. So that the floor control unit these functions can meet, it consists essentially of a follow-up device, which is used to move the The elevator executes synchronous vertical movement, its speed at '/ ioo of the travel speed of the elevator is reduced in size by a suitable reduction gear, and from a forerunner, the ahead of the follow-up device due to a call. The forerunner runs to one of those The corresponding position on the floor from which the call was made and after arriving in this position an engaging member is actuated to a stop attached to the frame of the control unit to stop the Forerunner to move into this reputation position. After that, the elevator picks up as a result of the one following the forerunner Movement of the follow-up device the forerunner. In the case of the floor control device, the relative movement between the follower device and the V01 rotor to control the acceleration and Delay of the elevator used. In the known floor control devices, in which the precursor in one of the call floor leads to a corresponding position, an increase in the basket travel speed inevitably leads to a Enlargement of the travel distance required for the elevator traveling at this maximum speed. Therefore, the forerunner must first move a distance corresponding to the travel distance of the moving elevator Advance the route. For example, assume that the elevator is traveling at a speed of 540 m / min. In this case the speed required to reach this speed is: from 540 m / min Required minimum travel distance about 100 meters, this distance being a building with 30 floors corresponds, in which the floors are vertically superimposed with the usual spacing. Because the elevator executes a vertical movement, the forerunner must execute its free forward movement in an area which is twice as large as its driving range. The guide rail for one on the follow-up device held precursors must have a correspondingly great length, which also the dimensions of the floor control device accordingly. The floor control device is generally in Machine room installed above the elevator shaft. The .floor control device can be connected to the