DEL0016597MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: September 10, 1953 Advertised on: September 1, 1955

GERMAN PATENT OFFICE

The invention relates to a device for determining the percentage speed ratio on machines with separately driven rotating parts that meet several requirements is fair. First of all, the measurement is independent of the respective speed; this The requirement applies in particular to textile machines, in which the material speed often corresponds is changed according to the respective conditions. Furthermore, the system measures proportionally exactly, whereby the speed ratio can be read off directly in percent (e.g. ioo: 98.7). In addition, it is constructed with relatively little economic effort.

According to the invention, the device is designed so that the rotating parts, preferably whose waves, trigger impulses for the purpose of comparison constantly or during a certain Duration of individual counters are counted separately, these counters after Reaching a certain count, e.g. B. 100, by pressing an auxiliary contact directly or can be switched off automatically via a relay. Appropriately, one is used to trigger the

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L 16597 IXbI 42ο

Impulse on the one that drives the rotating parts Waves contact fork "apply, for example trigger a pulse with each revolution. The switches can also be designed so that several, z. 15. two, pulses are triggered. But if you want surveillance extend over a relatively long time, so you can train the device so that only after a certain number of revolutions ίο one Im]) IiIs is triggered.

The impulses can be mechanical, e.g. B. by cam switches, also to any other, z. 15. Photoelectric, type to be triggered.

One of the usual devices, ■ / .. 15. of the type of ignition distributor in a motor vehicle, can be provided for receiving the pulses.

Kin embodiment according to the invention is explained in more detail with reference to the drawing. When Embodiment is a textile machine rooted, where it comes down to the change in length of the belt running through the machine to monitor. Fig. 1 shows the circuit structure and Fig. 2 shows the associated switchboard the display devices.

The textile machine has six separately driven parts that are used to process the continuous textile belt. The contactors //. ,,, A _v ,, A _n , A _u , A _K and A _{w are} connected to the drive shafts for these parts. These switches are closed either after each revolution of the drive shafts or after a fraction of the revolution or after several revolutions. The switches are designed so that they can be set for the respectively desired interval.

_{The monitoring device is} connected to voltage by the switch Ζ Γι through the fuse Z _8. After switching on, the operating area is indicated by the lighting up of the signal lamp Z ₉ .

The counters A _2x and A.,., (Own. 1) with the display windows // and B on the control panel (Fig. 2) are used to monitor the speeds. The counters A ₂₁ and A.,., Can be assigned to the individual cam switches A _n to A _iG . The selection of the waves to be compared is made by the selector switch A ₅₃ with the positions 1, 2, 3, 4, 5 and 1 or 2, 5> 4, 5, 6 and C). According to the position of the selector switch according to Eig. 1 the speeds of shafts 5 and 6 are monitored. In prop. However, the switch position for monitoring shafts 3 and 4 is shown in FIG. In the example, two counters are provided for comparing the speeds of two shafts. However, the device can easily be designed so that the speeds of more than two shafts are monitored at the same time.

The counters are switched in such a way that counting is interrupted as soon as the number 100 or 1000 or another number appears in one window A. In the present case, the shutdown takes place at the number 100.0; in the window/? you can see the number 98.7. Since the counter B is assigned to the spatially downstream shaft, one has to do with a shrinkage of the textile band by 1.3%. The system guarantees a measuring accuracy of 0.1%.

The resets (Fig. 2) return the two counters to the zero position.

In order to achieve the above-mentioned mode of operation _{, the counting is interrupted by means of an auxiliary contact syi., U} , which is actuated at the desired interval. In this example, the relay A ₀₃ , which is designed as a rest _{relay, receives voltage through the auxiliary contact ^ i 011} , whereupon it interrupts the circuit that excites the counters and ends the counting. Of course, the relay A, _{3 can} also be designed as a working relay and switched accordingly. It is also conceivable to set up the circuit in such a way that the relay ^ i _{23 is} dispensed with entirely. In this case, the auxiliary contact would directly interrupt the circuit for the counters.

However, if the counters are not to be automatically interrupted at a certain value, switch A _{51 is} opened. In this case it is avoided that the contactor A ^ _{3 receives current when the auxiliary contact ^ i 011} is closed.

Parallel to the series circuit consisting of the switch A ₅₁ and the go counter contact A ₂₁₁ is the cut-off switch ^ ₅₂ , which in its "on" position enables the counters A. _n and A _{w to} operate and in its "off" position the interrupter contactor A “^ Puts on voltage and makes counting impossible. The counters can be stopped and restarted by actuating the switch ^ i _52.

As soon as the counter can be activated (closed relay A ₂₃ ), the signal lamp A ₉ lights up.

Claims (9)

Patent claims: i. Device for determining the percentage speed ratio on machines with several separately driven rotating parts, characterized in that the rotating parts, preferably their shafts, trigger pulses which, for the purpose of comparison, are constantly or during a certain period of time from individual counters (A ₀₁ , A ₂₂ ) are counted separately, these counters (A ₂₁ , A ₂₂ ) after reaching a certain count, z. B. 100, can be switched off automatically by pressing an auxiliary contact (A ₂₁₁ ) directly or via a relay (A., ₃ ). 2. Device according to claim 1, characterized in that contactors (A _iX... A _ie ) are attached to trigger the pulses on the shafts of the rotating parts. 3. Device according to claim 1 or 2, characterized in that the contactors (A _n ... ^ I ₄₆ ) trigger a pulse with each revolution of the shaft. 546/110 L 16597 IXb I'42ο 4. Device according to claim 1 or 2, characterized in that the contactors (A _{11 ...} A i6) trigger several pulses during one revolution. 5. Device according to claim 1 or 2, characterized in that the contactor trigger a pulse after several revolutions. 6. Device according to claim 1, characterized in that that photoelectric means are provided for triggering the pulses. 7. Device according to claim 1 or the following with more than two separately driven parts and two display devices, characterized in that a selector switch (A ₅₃ ) is provided which allows the counters (^ i ₂₁ , A ₂₂ ) to have two different parts assign. 8. Device according to claim 1 or the following, characterized in that a switch (A ₅₂ ) in series with the counters (A ₂₁ , A ₂₂ ) is provided for arbitrarily switching on the counters (A ₂₁ , - ^ ₂₂ ) which put the counters out of operation Relay (A ₂₃ ). 9. Device according to claim 1 or the following, characterized in that a switch (A ₅₁ ) in series with the auxiliary contact (■ ^ 211) ^{in the} branch parallel to the off switch (^ 52) is provided, which is an arbitrary cancellation of a certain Automatic system that switches off the figures is permitted. Referred publications:
German patent specifications No. 689 934, 732 447. 1 sheet of drawings