DE1431136A1 - Method and device for measuring the tension of a rope wound on a rope drum - Google Patents

Description

Patent attorney Dipi.-lng. A. SPREER Göttingen, Groner Str. 37

Telephone 59923 · Postal checking account: Cologne 86838 ■ Bank account: Kreissparkasse Göttingen 5254 Private: Kleperweg 6 · Telephone 59923

Patent attorney 14 31136

Dipl. Phys. Dr. Whale Junk \

3 Hanover, Abbestr. 20th

Göttingen, April 1st, 1964 My file 9613 J / Z

Zavody V.l. Lenina Plzeil, n «frodni podnlk, Plzeä (CSSR)

"Method and device for measuring the tension of a rope ^{M wound on a rope drum}

You invention relates to the measurement of the fteilaugee and with it the (Jew ion tee of a load that is suspended on one! Hoist or a pulling device that has passed with a: eii drum and a suspension rope.

Up to now, the one that depends on the weight of the load has been used Force guided by a sensor from the force reaction g that is created e.g. in rope pulleys, in a planetary gear part, in an aohrag gearbox and the like. Constructions are known in which the entire hoist is supported on t.ägefUhlern.

Me disadvantages of the methods mentioned are that the hoist must be equipped with either pulleys, planetary gears or Johrägver payments. When storing the whole hoist * on weighing sensors, an additional

909812/0113 ^ --- «'

H31136

additional! support frame must be provided

The present invention, which relates to a method and a device for measuring the tension of a rope wound on a rope drum, overcomes many shortcomings. You ^! It consists in the fact that by using a speed drum, which is pivotably arranged with one end on the driving shaft and mounted with the other end in the ... Component is transferred to the active part of the saw sensor, which works on the principle of magnetostriction or the like and converts the mechanical variable into an electrical one, with these electrical values, which depend on the current position of the SIiIs because of the changeable * erts of the drum bearing reaction is, duroh a suitable organ »eg through a potentiometer; it is compensated, which is continuously operated by the rotating cable drum «

A practical embodiment, the ftrfindungegegegMSiatand · "FIGS. 1 to 3, wherein Fig. 1 duroh a vertical section of the beiltrommtllager nit represents the mounted therein Torsionsfühler, Fig. 2 shows the Urundrias of the hoist and a horizontal δη Sehnitt duroh the Troramellager and iobeBatisoh the The arrangement of the <Väge @ y »teB» shows and Fig. 5 shows a vertical section through the troamic bearing including the bearing

9098 12/0113 ~ - ~ - *

- 3 pressure sensors illustrated.

As can be seen from Fig. 2, the cable drum 1, on which the oeil is wound up in a regular helical line, is swiveled with one end on the is arranged tiltable. This bearing body, which is housed in the bearing frame 5 by means of the elastic elements 6 and 7 with sufficient upiel, is excepted in the shape of a fork in its lower rope and provided with a prismatic date for receiving the small body 8. This has the shape of a cut cylinder and is supported on a similarly designed slat of the pivotable arm 9 'which engages with its arm in the fork-shaped lower part of the bearing body f. The pivotable nTm 9 is mounted with its hub by means of the bearing 1o in the storage space 5, namely in the cover 11. In the hub of the pivotable arm 9, a cavity is formed which has internal teeth on one side. In this cavity the TorsionsfUhler 12 is housed, which is provided with toothing at both ends so that it engages with one toothing in the corresponding toothing of the pivotable arm 9 and with the other toothing in the toothing of the flange 13, which engages with the storage rooms and the cover 11 is firmly connected. The torsion sensor is enclosed in the cavity through the covers 14 and 15.

909812/0113

The compensation of the electrical size of the active part of the toroidal filler takes place by means of the rotatable potentiometer 16, which is set in rotation by the shaft 17 driven by the cable drum 1. The compensated electrical © Gröüt on dsm pointer 1.9 of the balance is evaluated by & in Tar · »strength system 18, which is equipped with a servo motor h exercises the bearing body placed in the bearing frame 5 (similar to in Pig t) by 4 against the pressure sensor, running a rope loaded with a force P is wound onto the rope drum of the Febeseugee set up in the manner described above Bearing body 4 a force reaction, which causes the force P and the ocular distance a from -ä «r on the drive shaft © 2 ^ -ü & iltroäuael-B-tÜtB · - proportion®! is · This action is transmitted through the body door 8 to the Söliwenkarm 9 and produces a torque in it that corresponds to the size R © aktl @ n iwa the distance from the center point d @ sLag @ rs 3 v © äI> ag @ rmittelpunkt d @@ ®chw © nki> aren body 9'proportional is _B This torque is transmitted to the sensor 12 through a toothing and causes it to circulate in its active @ il ftirkuitgen, di® duroh the hearing system 1 © and 19 so processed-wef 4®B that "the information on the scales show" the change of the egg actlons size in the rope drum bearing and thus. auoh 4 ± m change 'the. in the active »part of the probe. effect, which is the effect of the change in distance,

9098 12/01 13

is compensated by the potentiometer 16 _f which is continuously driven by the rotating cable drum by means of the .Veil "17" - When the printer 2o (Pig 3) is used, the lieaktion from bearing body 4 is transmitted directly to the printing error 2 © "

Frictional torques arising from the rotation of the outer cable drum in the bearing body 4 are canceled out »that _ the bearing body is only free in the required alignment is movable "

It is possible to use elastic elements. 6 and 7, for example. Usually bundles of elastic elements are replaced by circular membranes or articulated tie rods without changing the essence of the invention , «Α» © _Sa B _r when stored on alaen or balls. It is also possible to use the hub of the arm 9 as a support. of the Toreionif üblere 12 to train · Your Aohse can join the Aohse of the rope drum t at any angle.

The power transmission tone bearing body 4 on dtK eohwenkbarsn Ar »9 can also be made in another way, bsi the one who suffers from a minimal "friction will, s «B. "elastic bodies" by means of sons

Zug or Druok claims one. The essence of the rfinduag

909812/01 13

is characterized nioht Berühr t _r will not AUOH when the pivot arm 9 without the! lid 11 housed "sweier When winding or more Keiltrums _f whose resultant not switch the distance a rom Seiltromaelstütapunkt" eini with dta lorsionaftihlsr 12 directly in the support frame 5 changed, If there is no need for a compensation for the component 16. Bieg meets' for all brewing, ice creams that are equipped with a leveling roller with a Vvageljalken.

"Bas were beeohriebene method can for dm v.ägen tone laeti o € he for ßegrensung ά @ τ auläseig®n Belaituiig to He * b *" · or Sug "aaßhineB used derm Sitiltroaa ·! Can be tilted and stored «It is also advantageously reversible where the Las ten dursii ropes are hung directly on the rope drum, I ₉ B ₉ in Greiferkraß latifkatsem and the like» · In those cases * where the IMt is hung on several rope drums is "one will remove the total weight of the L *" t by looking at the information given by the individual parts of the equation.

90 9 812 / 011-3

Claims (2)

Claims 1. A method for measuring the tension of a hatchet wound on a cable drum when using a cable drum which is pivotably arranged with one end on the driving shaft and the other end is mounted in the cable drum bearing, characterized in that the reaction in this drum position ( 3) because the freely mounted bearing body (4) is only transmitted in the direction of this reaction or its component to the active part of the Vägefehlerera (12,2o), which works on the principle of magnetostriction of the like converts said electrical quantity is dependent on the instantaneous position of the ax due dee variable value of the drum bearing reaction and is compensated by a suitable organ "sB by a potentiometer, which is actuated by the rotating cable drum in a continuous manner. 2. iS facility to carry out the! Experienced after request 1, characterized in that the bearing body (4) »in which the drum bearing (3) is formed in the bearing frame (5) is supported by means of elastic elements (6 and 7) co that There is only a movement within the meaning of the heat or component run and with ssinem blown part on the 'inde a pivotable arm (9) rests with one end of a Torsion sensor (12) is rerbunden, the changed end with the * bearing frame (5), where «weeks 909812/0113 Force expectation of the reaction on the balance face (19) just as a potentiometer (16) is switched on next to this and the torsion sensor (12), since the cable drum | 1) is operated. 3 installation according to claim 2, characterized by dander swiveling Am (9) including the torsion filler (2o) replaced by a pressure sensor (2e). 9 0 9 8 1 2/0113