DE531486C - Device for the synchronous transmission of movements from devices of low power to those of higher power - Google Patents

Description

GERMAN EMPIRE

ISSUE ALH
AUGUST 13, 1931

REICH PATENT OFFICE

PATENT LETTERING

M 531486 CLASS 21 a * GROUP

L JOJ64 VIIIaJ2ia ^x Date of publication of the patent grant: July 30th

C. Lorenz Akt-Ges. in Berlin-Tempelhof *)

Patented in the German Empire on January 18, 1928

The device for the synchronous transmission of movements of devices low power to higher power, which consists in the fact that one is in function with the difference of the movements, the mechanical device actuates a regulating member which restores the synchronous state influenced, is extended and perfected by the present invention. This is done by using a known centrifugal governor controls the device actuated by the differential movement. So you can see the insensitivity against sudden load and voltage fluctuations of the machines controlled by such regulators and at the same time the small change in speed with such fluctuations, which, albeit often immeasurably small, but if it must always be present, cancel it again completely.

In the figures, some are exemplary embodiments of the invention shown. The same reference symbols in the figures relate to similar ones Construction or switching elements; e.g. Fig. r shows such an embodiment. ι is a larger DC motor Power, the speed of which is synchronous with that of an auxiliary machine 2 of low power should be held. 3 means the .30 field winding of the motor; 4 and 5 are Resistances which are in series with the field and which are wholly or partially dependent on the yet to be described regulating devices are influenced. On the verge of one with the motor axis firmly connected disc is the axis 6, which is on their one A pinion 7 at the end and a contact 8 at the other end. On the end of one firmly clamped spring 9, which is the effect of centrifugal force and gravity is exposed, sits another contact ro, which at a certain speed of the Contact 8 touches and thereby the resistor 4, which via slip rings 11 to the Contacts is placed, is currently short-circuited. The effect of gravity is in known way so that the contact in a tirril-like manner once for each revolution opened and closed once. The pinion 7 engages in a ring gear 12 a, which sits on the axis of the auxiliary machine 2. Owns the auxiliary machine 2 a certain, unchanging speed, so as long as the engine 1 also maintains this speed, the pinion 7 and the ring gear 12 remain at rest relative to one another. On the other hand, if the engine runs faster

*} The patent seeker stated as the inventor:

Dr.-Ing. e. H. Karl Schmidt in Berlin-Lichtenrade.

581486

or slower, the pinion 7 is rotated by the "Zatjnktariz J2." and changes the Contact distance and thus the mean OfE-ImSgS "-" and "Closing time of contacts 8 and 10. This way the motor receives an additional torque counteracting the difference in movement, so that the exact synchronous state is always maintained will.

Same synchronizing effect on the speed of the motor can also be achieved by not adjusting the contact spindle 6, as described above, but by changing one additional field resistance in the manner of a Gfob control shifts the control range, as shown in Fig. 2 and 3, so that here too with the auxiliary machine 2 is absolute synchronous speed is maintained. In the embodiment of Fig. 2 is through the pinion 7 by means of a spindle 13 an additional lying in the field circuit Sliding resistance 14 changed, whereby synchronism is always produced while the fast regulator the insensitivity to load and voltage fluctuations guaranteed.

An even more favorable regulation with greater stability or synchronizing torque is obtained by combining the two embodiments shown in Figs to a single = according to "Fig. 3. It will be possible here to use the Let the controller always work on the most favorable part of its characteristic while according to the design in Fig. 1, if there are very large load or voltage fluctuations Circumstances would come close to the upper or lower limit position.

The design according to Fig. 4 also pursues a similar purpose, only with the difference compared to Fig; 3 that the limitation to the most favorable part of the characteristic takes place directly as a function of the average opening and closing time of the contacts. This can be done, for example, in a manner known per se by means of a small reversible direct current motor 15 which actuates a coarse control in the frame of an additional field resistor 16 (similar to 14 in FIG. 2). The motor is reversed by the relay τγ, which, under the action of the average contact current and a mechanical spring force, closes the armature to one or the other pole of the battery 11, while the field 19 is always excited in the same direction. However, other means, such as simple relays, differential relays and the like, alone or in conjunction with auxiliary motors, can also be used to change the resistance 16 in FIG.

Likewise, instead of the ring gears mentioned in all the exemplary embodiments and pinions appropriately designed friction disks and friction wheels are used.

Claims (6)

Patent claims: i. Device for synchronous over-. support of movements of devices low power to those, higher power, where one by the Movement difference directly actuated mechanical device a synchronous state restoring Influenced regulating member, characterized in that the mechanical device actuated by the differences in movement a centrifugal contact regulator influencing the device to be synchronized controls. 2. Device according to claim 1, characterized characterized, ^ that the pre-85 direction the contact distance according to the Tirrill principle (e.g. according to Schmidt) working contact speed regulator changed (Fig. i). 3. Device according to claim 2, characterized in that in addition to the centrifugal force regulation, a coarse regulation is controlled by the relative movement. 4. Device according to claim 2 and 3, characterized in that the relative movement directly connected to the regulating circuit of the contact regulator. ' Coarse resistance controls (Fig. 2). 5. Device according to claim 2 and 3, characterized in that the relative movement changes the contact distance and at the same time and directly a rough one Regulating device actuated (Fig. 3). 6. Device according to claim 3, characterized in that the additional Coarse regulation is controlled depending on the fine regulation (Fig. 4). - 1 sheet of drawings L_