DE1060962B - Device for driving preferably remote-controlled switches by means of a contact bank and a forward or backward rotating contact arm that carries out the control process itself - Google Patents

Description

GERMAN

The invention relates to a device for driving preferably remote-controlled switches with several contacts arranged next to one another on a contact bank and one in front of or contact arm rotating backwards, which carries out the control process itself.

Drives of this type that allow remote control of switches over long distances or also mechanical transmission links, e.g. B. Ball bars and drive chains, replace, are in numerous Designs known and partly with motors, partly with electromagnetic switching mechanisms educated.

When using motorized drives occur because of the inertia forces of the motor and the gearbox Difficulties in stopping the contact arms exactly on a desired contact. To the Avoiding overrun of the contact arms is, in known designs, a great deal of mechanical effort and electrical devices, e.g. B. for special couplings or for short-circuiting the Drive motor, required. Switches which for mechanical or electrical reasons do not go through be allowed to reach the starting position again, must be equipped with devices for reversing the switch to forward and reverse, z. B. by relay or by switching the motor provided be.

The invention is based on the object of providing a training for drive devices for front and rear Specify backwards running switches with little electrical and mechanical effort Facilities avoids the disadvantages of known designs. The drive device according to the invention is characterized by a ratchet wheel attached to a selector shaft with one for one revolution In both directions of rotation, there is a toothing that becomes effective, one on the selector shaft in Fork-shaped, pivoted in a fixed angular range, controlled by a rotating eccentric Shift lever with two on a diameter on the circumference on the toothing of the ratchet wheel acting pawls and pivotable in two switching positions by one on the shift shaft Setting with two alternately lifting off one of the oppositely acting pawls Cover edges and a device for automatic reversing of the ratchet wheel by switching the backdrop as a function of one of the ratchet continuous, preferably adjustable Angular range.

This switch is not activated with the aid of an electromagnet by electrical impulses, but by a device for the drive that always revolves in the same direction of rotation
preferably remote controlled switch
by means of a contact bank and a

rotating forwards or backwards,

carry out the control process itself

Contact poor

Applicant:

Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Dipl.-Ing. Karl-Heinz Berg, Munich,
has been named as the inventor

Motor driven. The switch is remote controlled by switching the drive motor on and off, by the circuit for the supply of the drive motor by a control circuit from a Encoder, a control contact arrangement and encoder and control contact arrangement interconnecting Control lines influenced or included in the control circuit.

The control contact arrangement consists of a group of control contacts, which in their number and correspond in their arrangement to the switching contacts of the contact bank. The associated contact arm is as well as the contact arm for the switch contacts attached to the switch shaft.

The circuit arrangement for controlling the drive motor can advantageously be modified in this way be that the control circuit, a circuit is connected in parallel, which by means of a cam disk on the drive shaft of the motor operated contact in the rhythm of the rotating eccentric is opened or closed. This measure is in conjunction with the invention Design of the drive device ensures that the desired switching contact is safely reached is, and it is at the same time effectively prevented that when the shutdown runs out

909 560/334

3 4

After the switch has been set to one, the motor can be swiveled in the opposite direction, and the motor with two cover edges 13

wanted switch contact a change of the switch and 14 the toothing of the ratchet wheel alternately

position can occur. one pawl each in the area of action

To reverse the ratchet wheel or the covers. The switching of the gate 12 takes place by the self-switch shaft with the contact arms; which operates on the 5 after the ratchet one advantageously external switching contacts takes place automatically, has passed through an adjustable angle range by also make a Mitzu guided in a section 15 of the backdrop from every other switching contact can is a device for switching the slave pin 7 on the ratchet 6 when reaching the Setting from the encoder by means of an electromagnetic end table determined by the length of the cutout Device provided. io position swivels the backdrop into the other position.

An embodiment of a device according to a required for stopping the engine, in

the invention is shown in Figs. 1 and 2 schematically rhythm of the movement of the pawls open-

shown. Nending and closing contact 20 is through a

Fig. 1 shows the design of the drive device- on the drive shaft of the motor mounted cam-

with the switch; in "15 is actuated disk 19. The contact 20 can by a

Fig. 2 is the circuit arrangement for the control switches working accordingly are replaced,

tion reproduced. For a better understanding of the switching process,

The remote-controlled switch consists in executing the necessary movements in the

Approximation example of Fig. 1 viewed from two or more control level 2 control.

clock banks 1 and 2, of which at least one contact 20 In the position shown in Fig. 1, the drive has

Bank 1 is used for the switching operations to be carried out, the grinding arm 5, coming from contact 5 "2, straight

while the contact bank 2 of the control of the switching is pushed to the contact Sl. The eccentric 18 has

processes from a separate control point reached its highest position. Contact 20 is still

is reserved. The drive of the switch is closed, but it opens immediately when the eccentric

Stepper that on. the switch shaft 3 is working 25 has exceeded its maximum position and thus the fixed

tet and the cam disk 19 seated on the motor shaft by the associated drive motor 21

is made. Collapse of the contact spring of contact 20 allowed

The contact banks 1 and 2 are tet as switching levels. The rotatably attached to the shift fork 8

formed, in which the individual contacts circular pawl 9 is flush with the tooth of the ratchet 6.

are arranged in a plane and their associated 30 The ratchet wheel has two opposing teeth.

Contact arms 4 and 5 on the same switch shaft 3, the driver pin 7 fastened in the ratchet wheel, which is shown in

secured against rotation, are attached, so that the cutout 15 of the lying in front of the ratchet wheel

all contact arms protrude into the same movement conditions backdrop 12, the backdrop has in the right sense

exhibit. The switch contact level 1 of the drive is pivoted about the switch axis 3. The detent spring 17

the switch to the contact arm 4 is with the contacts 35 of the gate occurred clock Kl is provided to K13 in one of the cutouts sixteenth These switch contacts, and fixes them. Because of this location the backdrop has

correspond in the same way in the control level 2 the cover edge 14 the tooth of the ratchet 6 for

arranged control contacts Sl to> S13. the pawl 10 released. The cover edge 13 on the other hand

The drive device that moves the rotation has blocked the following tooth for the pawl 9, movement of the drive motor in a step-by-step left-hand 40. Clockwise rotation of the switch shaft with the con- .... processes is assumed that the drive is not clock-poor 4 and 5, consists of always being paused on a specific contact should be rotating drive motor in the same direction.

21, on the shaft of which an eccentric 18 is attached, the eccentric 18 runs out of the position shown

a shift fork 8 with two pawls 9 and 10, 45 in a clockwise direction, the shift fork 8,

a ratchet wheel 6, which is rotatably mounted on the drive shaft on the switch shaft 3,

is consolidated, and a backdrop 12. swinging movements; this will be first

The eccentric 18 rotating in the shift fork 8 over the pawl 10 moves the ratchet wheel by one pitch pivots the shift fork in one of the eccentric moves counterclockwise. The latch 9, Tricity-dependent angular range around the switch 50, which runs back at the same time, slides on the cover shaft 3, on which the shift fork is rotatably mounted. edge 13 of the backdrop 12 and can not The pawls 9 and 10 are on the shift fork behind the next tooth to fall arranged so that they advance clockwise one pitch on a diameter closest To push the scope of the ratchet 6 further into its teeth. The pawl 10 can counteract this. To a reversal of the switching movement 55 over on its return behind the "next tooth to be able to effect, the ratchet 6 is z. B. to set shark and this in turn by a division Move parts of the circumference counter-clockwise. The ratchet 6 and teter toothing provided .. In place of a so that the contact arm 5 of the control plane and the Ratchet wheel 6 can also have two ratchet wheels on the contact arm 4 of the switching level, so step by step the entire circumference is the same, but rotated counterclockwise in opposite directions 60, namely directional gearing can be set. Thereby are · so long until the driver pin 7 against the amentdie Shift pawls against each other so that the opposite end of the cutout 15 Hej Ede of the two pawls only runs on a ratchet lowing edge of the backdrop 12 and the next can act. But as a result of the opposite step, the backdrop turns counterclockwise Toothing of the ratchet wheel (s), the ratchet 65 takes along a division, as indicated by the dashed line ken act in the opposite direction, · precautions must be taken. Position of the driver pin is indicated in FIG. 1. be taken that only one pawl in 'This causes the detent spring 17 from its incision the teeth can intervene. It is therefore lifted 16 and falls into the neighboring incision a gate 12 is provided - the one on the switch shaft. By pivoting the backdrop, the Abum a fixed angle · in - two switching positions 70 cover edge 13 now the next tooth for the pawl9

Claims (5)

5 6 free, and the cover edge 14 covers the next sen. The motor starts and as it rotates Tooth for the pawl 10. the contact set 20 is closed. The motor In the course of the further rotation of the eccentric, the drive is arranged on its drive shaft 25 now the pawl 9, while the pawl 10 inside eccentric 18, shift fork 8 and ratchet wheel 6 den follow the cover edge 14 runs empty. The ratchet 6 5 contact arm of switch 1 and that of the control runs Now gradually turn clockwise until level 2 is reached in the manner described above. Here in Fig. 1 drawn position is reached again. when sweeps the contact arm 5 of the control plane By a change of the cutout 15 in the succession all the contacts Sl and SIl, the connecting link or by inserting a second draft piece via the contact plate 23 of the encoder 22 at voltage merstiftes in the ratchet wheel in provided for this purpose are io. As soon as the contact arm drills the contact SIl, you can switch from forward to backward in order to run to contact 5 "12, the run will be carried out at any point. Circuit A - encoder - control level - motor under- In principle, it is also possible to break a whole, since the contact plate 23 can be reached with its rotation of the ratchet wheel (360 °) when section 24 is above contact G 12. As a result of the two switching wheels 6 with opposing toothing 15, switching circuits A - D - B - C connected in parallel are used. which is still closed, the engine continues to run. Of the Since after reversal of the ratchet wheel only after through eccentric 18 pushes, driven by the motor 21 of the entire adjustable range, the contact reversal takes place via shift fork 8 and ratchet wheel 6, it is advantageous in some cases to use poor 5 resp. 4 to the desired contact 6 "12 a changeover of the direction of rotation from each position 20 or K 12. The circuit is still closed in development. For this purpose, a device can be interrupted at the moment when the eccentric can be provided that a 18 has exceeded its respective maximum position and switching the setting independently of the take-away, the pawls 9 and 10 already have a declining Bewemerstift 7, e.g. by electromagnetic means, then the cam 19 enables encoder. 35 by collapse of the contact spring, contact 20 is In the following, the circuit arrangement for opens and thus the motor is switched off. The end electrical control of the switch on Fig. 2 skids of the drive motor 21 can because of the closer explained. To switch 1 to a given translation of the eccentric gear, none to let go of the desired position and to stop there moving the pawls more prominently, an encoder 22 is required. Call 30 with this encoder. however, the desired position of switch 1 is changed in a subsequent switching process chooses. As in the exemplary embodiment, the transmitter can move the contact arm 4 from contact K 12, for example, to the be a contact level, in which the contact if 5 can be carried out, is the one from the Control contact level 2 and the switching contact level 1 development of the gate 12 dependent direction of movement to reverse the contacts G1 to G 13 arranged in a semicircle 35 of the switch shaft with the contact arm 4, are or z. B. with contact sets or pushbuttons since it is a non-continuous switch be formed. The contacts G 1 to G 13 are acts. The movement can be reversed once directly by means of control lines with the corresponding con- by inserting the clocks 5 ¹ 1 to .S13 of control level 2 connected. Pivoted to the backdrop 12 in its other locking position For a better overview, FIG. 2 shows only the connection and the switching pawl that has not been effective until then gen with the contacts Gl, G2, GYl and G 13 can come into effect. However, the backdrop will draws. .. left in its detent position, the ratchet runs in To explain the processes involved in setting the previous UmI to direction up to the last switch 1, it is assumed that in the contact (K 13 of the contact bank), the position shown, the contact arm 4 of the switch 1 and 45 automatically pivots the backdrop and the contact arm 5 of control level 2 runs in the opposite direction to the desired contact if 5.
Contact Kl or Sl are. If a different position of the scarf cutout 24 of the contact plate 23 over the counter is then desired, the process proceeds analogously, clock ff 1. In the example, thirteen contacts are specified as in the example explained. The thirteen positions of switch 1 can be selected. 50 The arrangement of the contact 20 is always guaranteed. The contact set 20 is open because the contact spring means that the motor 21 is only switched off when the eccentric 18, the contact arm of the switch, has collapsed into a section of the cam disk 19. The position of the two sections of the cam has slid onto the desired contact.
disk is chosen so that the contact spring twice switches that do not need to run forwards and backwards during one revolution of the eccentric 18 occurs 55, so are continuous, have no changeover and thus the contact 20 opens, and then, switching device. The gate 12, detent spring 17 and when the eccentric 18 is just above its maximum position, the pawl 10 then fall away. The ratchet 6 is stepped. The two parallel-connected current - in this case only provided with circles cut in the same direction, the control circuit A - Gl - Sl - B - C and the teeth . The operations and functions of the circuit A - D - B - C are open, which means that the drive motor 21 is switched off when a new switch position is set. Should now be the same as in the example given.
For example, the switch 1 is switched to the contact K 12, the contact plate 23 with its cutout 24 in the transmitter 22 is based on the desired patent claims:
th contact G12 . The contact G 12, which is up to 65 voltage was now on, provided that the supply voltage is applied to the first device for the drive, preferably clamping to C, remote-controlled switches with several on one, so it is switched off and thus the contact bank is also juxtaposed Kon contact S ¹ 12 in the control plane. On the other hand, clocking and a forwards or backwards circulating circuit via A - Gl - Sl - B - C are now closed - the contact arm, which controls the control process itself