CS232635B1 - Mechanical jack - Google Patents
Mechanical jack Download PDFInfo
- Publication number
- CS232635B1 CS232635B1 CS833946A CS394683A CS232635B1 CS 232635 B1 CS232635 B1 CS 232635B1 CS 833946 A CS833946 A CS 833946A CS 394683 A CS394683 A CS 394683A CS 232635 B1 CS232635 B1 CS 232635B1
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- CS
- Czechoslovakia
- Prior art keywords
- screw
- thread
- fixed
- casing
- foot
- Prior art date
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Mechanický zdvihák je riešený so samočinnou změnou rýchlosti zdvíhania a ťažnej sily na pohybovej skrutke. Umožňuje rýchle uvádzanie zariadení do nivelity ako aj ich efektívne zdvíhanie a podopieranie v prípadoch trvalého zaťaženia.The mechanical lifter is designed with automatic change of the lifting speed and traction force on the movement screw. It enables quick leveling of devices as well as their effective lifting and supporting in cases of permanent load.
Description
Vynález sa týká mechanického? zdvíhácieho zariadenia so samočinnou^ změnou’ rýchlosti zdvíhania a tažnéj sily na pohybovej skrutke.The invention relates to mechanical? lifting device with automatic change of lifting speed and pulling force on the motion screw.
Doteraz známe mechanické < zdviháky šú riešené jednostupňovým prevodom, ktorým je možné dosiahnúť den malých rýchlosti v nezaťaženom stave a pri dotyku patky zdviháka s pevnou podložkou resp. podložím, dojde k zníženiu rýchlosti zdvíhania z důvodu značného zvýšenia ťažnéj sily.So far known mechanical <jacks are solved by a one-stage gear, which can reach a day of low speed in unloaded condition and when the foot of the jack is touched with a fixed washer or. the subsoil, the lifting speed is reduced due to a significant increase in the pulling force.
Podstatou mechanického zdvíhacieho zariadenia podlá vynálezu je, že pozostáva z vonkajšieho puzdra s vertikálnou drážkou pre vodiace pero upevněné do vnútorného puzdra, pričom do závitu vnútorného puzdra zaberá skrutka s vonkajším i vnútorným závitom a jej horná časť je opatřená kuželovým vybráním zodpovedajúcim kuže1'ovej spojke upevnenej na pohybovej skrutke uloženej v ložiskách s telesom zdviháka, pričom pohybová skrutka je ukončená z hora štvorhranom pre pripojenie tažného ramena a z dola poistkou proti vybehnutiu , zo záběru.The principle of the mechanical lifting device according to the invention is that it consists of an outer sleeve with a vertical guide tongue groove attached to the inner sleeve, whereby a male and female threaded bolt engages the inner sleeve thread and its upper part is provided with a conical recess corresponding to the tapered connector fixed on a locating bolt mounted in bearings with a jack body, the locating bolt being terminated from the top by a square to connect the pulling arm and from the run-in lock out of engagement.
Hlavnou výhodou usporiadania předmětného zariadenia je možnosť prekonávania zdvihu bez zaťaženia vyššou rýchlosťou pri minimálnej ťažnéj sile. Příkladné prevedenie zariadenia podlá vynálezu je znázorněné v priečnom řeze na pripojenom obrázku.The main advantage of the arrangement of the device in question is the possibility of overcoming the stroke without loading at a higher speed with minimal pulling force. An exemplary embodiment of the device according to the invention is shown in cross-section of the attached figure.
Zariadenie podlá vynálezu pozostáva z vonkajšieho puzdra 1 s drážkou pre vodiace pero 2 upevněné do vnútorného puzdra 3. Do závitu vnútorného. puzdra 3 zaberá skrutka 4 s vonkajším i vnútomým lichoběžníkovým závitom a kuželovým vybráním zodpovedajúcim kužeíovej spojke 5 upevnenej na pohybovej skrutke. 6 uloženej v ložiskách s telesom 7. Pohybová skrutka 6 je na jednom konci opatřená nepr. štvorhranom umožňujúcim nasadit tažné rameno.The device according to the invention consists of an outer casing 1 with a guide tongue groove 2 fixed in the inner casing 3. Into the inner thread. the housing 3 engages a screw 4 with an external and internal trapezoidal thread and a conical recess corresponding to the conical connector 5 fixed to the movement screw. 6 mounted in bearings with body 7. The motion screw 6 is provided at one end with a spigot. a square to allow the towing arm to be fitted.
Druhý koniec pohybovej skrutky 6. je. úkon-. , čený poistkou 8 ipťoti případnému vybehnutiu závitu pohybovej skrutky 6 a skrutky 4 zo zaberu. Celý zdvihák je vybavený patkou 9, ktorá sa pri zdvíhaní břemena opiera o pevná podložku alebo podložie.The other end of the motion screw 6 is. act-. , which is provided by the fuse 8, to the possible threading of the screw of the movement screw 6 and the screw 4 from the engagement. The entire jack is equipped with a foot 9, which rests on a solid support or underlay when lifting the load.
Funkcia zariadenia spočívá v tom, že pri začatí zdvíhania břemena je kuželová spojka 5 vsunutá v kuželovom vybraní skrutky 4, čo napomáhá tomu, aby pri pootáčaní pohybovou skrutkou 6 došlo najprv k vzájomnému pohybu medzi vonkajším závitom skrutky 4 a vnútomým závitom vnútorného puzdra 3. Tieto dva závity majú stúpanie přípustné stupňu samosvornosti, ale trecia sila musí byť menšia ako u závitu pohybovej skrutky 6, ktorá má menší priemer ako vnútorný priemer vnútorného puzdra < 3j resp. vonkajší priemer matice 4. ’The function of the device is that, when the load is lifted, the tapered connector 5 is inserted in the tapered recess of the screw 4, which helps to rotate the movement screw 6 first between the outer thread of the screw 4 and the inner thread of the inner sleeve 3. These the two threads have a pitch permissible degree of self-locking, but the frictional force must be less than that of the screw of the movement screw 6, which has a smaller diameter than the inner diameter of the inner sleeve <3j respectively. outer diameter of nut 4. ’
Vnútorné púzdro 3 s patkou 9 sa otáčaním zdvihovej skrutky 6 postupné vysúva z vonkajšieho puzdra 1 dovtedy, kým patka 9 sa neoprie o podložku alebo podložie. Vtedy dojde k uvoíneniu kužeíovej spojky 5 zo skrutky 4 a zastaví sa vzhladom na prudké stúpanie trecej sily medzi závitom vnútorného puzdra 3 a vonkajším závitom skrutky 4 a pohybovej skrutky 6, kde je menšia trecia sila, čo vyplývá zo skutočnosti, že napr. na vonkajšom závite skrutky 4 s priemerom 80 mm može byť stúpanie napr. 20 milimetrov a na vnútornom závite s priemerom 40 mm stúpanie závitu napr. 4 mm.The inner casing 3 with the foot 9 is gradually extended from the outer casing 1 by the rotation of the stroke screw 6 until the foot 9 rests against the washer or subsoil. At that time, the cone connector 5 is released from the screw 4 and stops due to the steep rise of the frictional force between the thread of the inner housing 3 and the external thread of the screw 4 and the screw 6 where the frictional force is less, e.g. threads of screw 4 with a diameter of 80 mm can be a pitch of eg 20 millimeters and on an internal thread with a diameter of 40 mm thread pitch of eg 4 mm.
Po dotyku patky 9 s pevnou podložkou sa začne vonkajšie púzdro 1 pohybovat smerom od patky a začne zdvíhat alebo tlačit upnuté břemeno.After touching the foot 9 with the fixed washer, the outer shell 1 starts to move away from the foot and starts to raise or press the clamped load.
Konštrukcia1 zariadenia Hiumožňuje rožne využitie, například zabudováni© i.do podvoz-. : kov, třem a konštrukcii,’ ktoré třeba často; premiestňovaf a potom uvádza! do nivelity, i, alebo tiež pri odlabčovaní podvozkom s ne- < žiaducim trvalým zatažením. ' ;Construction 1 of the Hium allows for the use of, e.g. : metal, three and construction, which often need; relocates and then states! to leveling, i, or even when bogging off with a non-desired permanent pull. ';
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS833946A CS232635B1 (en) | 1983-06-01 | 1983-06-01 | Mechanical jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS833946A CS232635B1 (en) | 1983-06-01 | 1983-06-01 | Mechanical jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS394683A1 CS394683A1 (en) | 1984-06-18 |
| CS232635B1 true CS232635B1 (en) | 1985-02-14 |
Family
ID=5381019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS833946A CS232635B1 (en) | 1983-06-01 | 1983-06-01 | Mechanical jack |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS232635B1 (en) |
-
1983
- 1983-06-01 CS CS833946A patent/CS232635B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS394683A1 (en) | 1984-06-18 |
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