PL39740B1

PL39740B1 -

Info

Publication number: PL39740B1
Application number: PL39740A
Authority: PL
Filing date: 1956-03-02
Publication date: 1956-08-15

Description

Opublikowano dnia 16 kwietnia 1957 r. 4 &fl i/M POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 39740 KI. 42 k, 7/05 Biuro Projektóiu Urzadzen Wodnych Budoumictira Przemysloiuego*) Warszawa, Polska Urzqdzenie do pomiaru sil o zmiennym kierunku Patent trwa od dnia 2 marca 1956 r.Urzadzenie wedlug wynalazku do pomiaru sil o zmiennym kierunku umozliwia mierzenie w sposób ciagly sily oraz wykreslenie krzywej zaleznosci tej sily od przesuniecia punktu jej zaczepienia nie tylko przy zmianie jej wielkosci, ale równiez przy zmianie jej kierunku (znaku).Stosowane dotychczas dynamometry pracuja albo „na rozciaganie" albo ,,na sciskanie". Zna¬ czy to, ze gdy chcemy np. poddac pret prosty sile rozciagajacej oraz sciskajacej, to musimy nastawic dynamometr najpierw „na rozciaganie" i wtedy mozemy mierzyc wielkosc sily rozcia¬ gajacej i wykreslic zaleznosc jej od drogi punk¬ tu zaczepienia, a dopiero po ponctwnym ustawie¬ niu dynamometru „na sciskanie" zmierzyc sile sciskajaca i narysowac odpowiednia krzywa.W urzadzeniu wedlug wynalazku silomierz jest tak skonstruowany, ze pozwala mierzyc sily, któ¬ re moga zmieniac swój kierunek, przechodzac np. z sily rozciagajacej na sciskajaca i odwrot¬ nie.*) Wlasciciel patentu oswiadczyl, ze twórca wynalazku jest inz. mgr Tadeusz Wielunski.Jezeli np. sile rozciagajacej odpowiada wy¬ chylenie wahadla w prawo, to sile sciskajacej odpowiada wychylenie tego samego wahadla w lewo, a polozenie pionowe wahadlo osiaga w chwili, kiedy sila równa sie zeru. Zmiana kie¬ runku dzialania sily moze odbywac sie wielo¬ krotnie przy jednym nastawieniu sildmierza i zmiany te sa utrwalane na jednym wykresie.Na rysunku przedstawiono schematycznie uklad i dzialanie urzadzenia.Drazek 1 prowadzony w dolnej czesci podsta¬ wy 2, sluzacy jako punkt przylozenia sily P, która musimy zmierzyc, jest zaopatrzony w gór¬ nej swej czesci w zebatke 3, wspólpracujaca z kolem lub z kolami zebatymi 4. W przypad¬ ku zastosowania tylko jednego wahadla, zamiast dwóch podanych na rysunku, stcsuje sie krazek oporowy 5, który zapewnia wlasciwe polozenie drazka 1 z zebatka 3 wzgledem kola 4. Na osi kola zebatego 4 zawieszone jest wahadlo 6 z cie¬ zarem 7. O górny wystep' wahadla opiera sie drazek poziomy 8, do którego zamocowany jest rysik 9 opierajacy sie o papier wykresowy na-winiety na cylinder 10, Zespól skladajacy sie 2 tbla zebatego, krazka opbrowego 3, wahadla 6, clezasu 7, "czesci skladowych przyrzadu wykre- sowegc 8, 9, 10 jest podwieszony za pomoca ram¬ ki 11, sruby 12 i kola regulacyjnego 13 na nie¬ ruchomej podstawie przyrzadu 14. Obrót kola 13 na srubie 12 powoduje unoszenie lub opuszcza¬ nie tego zespolu i zmiane polozenia wahadla wskutek zazebienia kola 4 z zebatka 3 i drazka 1 obciazanego sila P.W celu wyeliminowania z pctmiarów ciezaru wlasnego drazka 1 oraz polaczonych z drazkiem przedmiotów jest on zrównowazony przeciwwa¬ ga 16, zawieszona na lince 15. PLPublished on April 16, 1957. 4 & fl i / M POLISH PEOPLE'S REPUBLIC PATENT DESCRIPTION No. 39740 KI. 42 k, 7/05 Biuro Projektóiu Urzadzen Wodnych Budoumictira Przemysloiuego *) Warsaw, Poland Device for measuring forces with varying direction The patent lasts from March 2, 1956 The device according to the invention for measuring forces with variable direction enables continuous measurement of force and graphing the curve of dependence of this force on the shift of the point of its attachment not only when changing its size, but also when changing its direction (sign). Dynamometers used so far work either "on tension" or "on compression". This means that when, for example, we want to subject a straight rod to tensile and compressive force, we must first set the dynamometer to "stretching" and then we can measure the tensile force and calculate its dependence on the path of the point of attachment, and only after After setting the dynamometer "on the squeeze", measure the compressive force and draw the appropriate curve. In the device according to the invention, the dynamometer is constructed in such a way that it allows you to measure forces that can change their direction, passing, for example, from tensile force to compression force and vice versa. no. *) The owner of the patent stated that the inventor was, among others, Tadeusz Wielunski, M.Sc. If, for example, the tensile force corresponds to the deflection of the pendulum to the right, then the compressive force corresponds to the deflection of the same pendulum to the left, and the vertical position of the pendulum is reached at the moment, when force is zero. Changing the direction of force action can take place many times with one setting of the silder and these changes are recorded on one graph. The figure shows schematically the layout and operation of the device. The bar 1 led in the lower part of base 2, serving as the point of force application P, which we have to measure, is provided in its upper part with a gear 3, cooperating with a wheel or with gears 4. If only one pendulum is used, instead of the two shown in the drawing, the stop disc 5 collapses, which ensures the correct position of the rod 1 with the gear 3 in relation to the wheel 4. The pendulum 6 with the weight 7 is suspended on the axis of the gear wheel 4. The horizontal rod 8 rests against the upper protrusion of the pendulum, to which the stylus 9 is attached resting on the chart paper on vignettes per cylinder 10, The assembly consisting of 2 toothed plates, a pulley 3, a pendulum 6, a section 7, "components of the drawing device 8, 9, 10 is suspended by means of a frame 11, sr the mouth 12 and the adjusting wheel 13 on the fixed base of the device 14. The rotation of the wheel 13 on the bolt 12 causes the lifting or lowering of this assembly and the change of the position of the pendulum due to the meshing of the wheel 4 with the sprocket 3 and the rod 1 of the loaded force PW in order to eliminate some weight own rod 1 and objects connected to the rod, it is balanced with counterweight 16, suspended on a cord 15. PL

Claims

Claims 1. Device for measuring the amount of force with variable direction, characterized in that it consists of a rod (1) with a gear (3), gearing with two wheels (4), on the axis of which the pendulums (6) are mounted loaded with weights (7), used to balance the tested force (P), applied to the rod (!), the frame (11) in which the wheels (4) and the pendulum (6) are embedded, and which is connected to a fixed base (14) by means of a screw (12) and an adjusting wheel (13), which arrangement enables the force to be continuously adjusted not only when the force changes in magnitude, but also when it changes its direction and becomes is negative or vice versa, which is achieved as a result of transferring the advance motion of the rod (1) to the rotation of the pendulum which, depending on the sign of the force, deviates to one side or the other.

2. Device variant according to claim 1, characterized by the fact that instead of the symmetrical system consisting of two wheels (4) and two pendulums (6), only one pendulum was used to balance the tested force and instead of one toothed wheel (4) the disc (5) against which the pad (1) rests.

3. Device according to claim 1 and 2, characterized in that it is provided with a graphing device, consisting of a rod (8), moved by an extension of the pendulum (6), a stylus (9) and a graph cylinder (10), on which the curve is obtained depending on The magnitude of the force to be measured, regardless of the direction of its action, from the displacement of the point of engagement of the force or from some other displacement.

4. Device according to claim 1 to 3, characterized in that the movement of the movement from the pendulum or the pendulum to the rod loaded with a measured force is carried out by means of a gear wheel (or gear wheels) and a gear that unambiguously change the rotation of the pendulum into a progressive movement of the rod.

5. Device according to claim A method according to any one of claims 1 to 4, characterized in that the tare weight of the bar (1) with the sprocket (3) and other parts connected to it is balanced during measurements by a counterweight (16).

6. Device according to claim A gear wheel according to any of the claims 1-5, characterized in that the toothed bar is based on a road (5) with rolling bearing, equalizing the gearing reaction or is also supported on the toothed wheel of the second symmetrical pendulum.

7. Device according to claim 1-6, characterized in that the set consisting of a toothed wheel (4), a stop pulley (5), a pendulum (6) with a weight (7) and a charting device is suspended on a movable frame (U), which shifting causes the load to vary in both positive and negative directions depending on the direction of rotation of the control wheel (13).

8. Device according to claim A method according to any of the claims 1-7, characterized in that the length of the pendulum (6) is adjustable or the weight (7) on the pendulum (6) is shifted, so that the device can be used for various ranges of measured forces. Biuro Projektów Urzadzen Wodowe Budownictwa Przemysłowego Up to patent description No. 39740 PL