HRP931331A2

HRP931331A2 - Expansion dowel

Info

Publication number: HRP931331A2
Application number: HR931331A
Authority: HR
Inventors: Artur Fischer
Original assignee: Fischer Artur Werke Gmbh
Priority date: 1987-09-09
Filing date: 1993-10-26
Publication date: 1995-06-30
Also published as: SI8811599A

Description

Izum se odnosi na razuporni moždanik prema uvodnom dijelu glavnog patentnog zahtjeva. The invention relates to a dissipating brain according to the introductory part of the main patent claim.

Iz DE-OS 34 20 375 poznat je razuporni moždanik, koji posjeduje na kraju svoje stabljike razuporni konus, kojeg se može uvući u razupornu čahuru. Razuporni konus se kod toga uvuče u čahuru tako, da se sa drugog kraja raspoređeni vijak odupre na predmet, kojeg tek treba pričvrstiti, tako da se okretanjem vijka stabljike, razuporni konus vuče prema van od uvrta u koju je bio umetnut razuporni moždanik. Razuporna čahura ostaje pri tome fiksirana lokalno u uvrtu, te se razupornim konusom razupre, pri čemu se razupornu čahuru pritisne prema stijeni uvrta. From DE-OS 34 20 375, there is known a flared brain, which has a flared cone at the end of its stem, which can be pulled into a flared sleeve. In this case, the gapping cone is inserted into the bushing so that the screw arranged from the other end rests against the object, which has yet to be attached, so that by turning the screw of the stem, the gapping cone is pulled outwards from the screw into which the gapping brain was inserted. At the same time, the bursting sleeve remains fixed locally in the screw, and is opened with the bursting cone, whereby the bursting sleeve is pressed against the wall of the screw.

Razuporne moždanike ove vrste se prednosno umeće u betonske izrađevine. Ako se sada pojave neugodna proširenja uvrta, npr. radi tvorbe napuklina, javlja se zahtjev, da se razuporni moždanik dodatno razupre, kako bi dalje ispunjavao svoju držeću funkciju. This kind of breakable brains are preferably inserted into concrete structures. If unpleasant expansions of the screw now appear, for example due to the formation of cracks, there is a request to further expand the torn meniscus in order to continue fulfilling its holding function.

Postupak dodatnog razupiranja se u uvrtu zasidrenim razupornim moždanikom neugodno odražava sa stiskanjem između razupornog konusa i razuporne čahure. Kod odgovarajuće visokih sila može se lako razuporni konus zaribati u razupornoj čahuri. The process of additional flaring is unpleasantly reflected in the screw anchored by the flaring brain with squeezing between the flaring cone and the flaring sleeve. At sufficiently high forces, the rifting cone can be easily ground into the rifting sleeve.

Zadaća izuma je ostvariti razuporni moždanik, kod kojeg bude zajamčeno dobro klizanje između kovinskog razupornog konusa i kovinske razuporne čahure. The task of the invention is to realize a tension rod, in which good sliding between the metal tension cone and the metal tension sleeve is guaranteed.

Rješenje ove zadaće se kod razupornog moždanika uvodno spomenute vrste postiže tako, da je na razupornom konusu u smjeru, koji pokazuje prema moždanikovoj stabljici, zasnovan naslon, na kojeg naliježe ispred razupornog konusa raspoređena, s razupornom čahurom preoblikujuća klizna čahura; i da je razupornu čahuru moguće tiskati preko klizne čahure na razuporni konus. The solution to this task is achieved in the case of a discontinuous brain stem of the type mentioned in the introduction, so that a rest is based on the discontinuous cone in the direction, which points towards the brain stem, on which a reshaping sliding sleeve rests in front of the discontinuous cone arranged, with a discontinuous sleeve; and that it is possible to press the spacer sleeve over the sliding sleeve onto the spacer cone.

Klizna čahura postoji od materijala, koji se kod razupiranje preoblikuje, tako da se dio materijala klizne čahure hvata s razupornom čahurom i gužva uzduž površine konusa. Rupice u površini konusa se kod toga zapune s materijalom klizne čahure, kao i rupice preko razupornog konusa hvatajuće unutarnje površine razuporne čahure. To ima za posljedicu, da se poveća klizna sposobnost između razupornog konusa i razuporne čahure, a time i odgovarajuće poboljša postupak dodatnog razupiranja. The sliding sleeve is made of material, which is reshaped when it is opened, so that part of the material of the sliding sleeve catches with the opening sleeve and creases along the surface of the cone. The holes in the surface of the cone are then filled with the material of the sliding bushing, as well as the holes over the gapping cone of the gripping inner surface of the gapping bushing. This has the effect of increasing the sliding capacity between the expansion cone and the expansion sleeve, and thus correspondingly improving the additional expansion process.

Kod prednosnog izvedbenog oblika je predviđeno, da klizna čahura na naslonu strši preko granične tlačne površine razupornog konusa. Preko stršeći materijal se kod razupiranja na osnovu visokog tlaka između razuporne površine i klizne čahure porazdijeli uzduž konusne površine razupornog konusa. Glede na upotrebljeni materijal klizne čahure i veličinu klizne čahure može se postići više ili manje tanak klizni film između razupornog konusa i razuporne čahure. Naročito dobre pokusne rezultate postiglo se je s kliznom čahurom izrađenoj od poliamida, koja je obuhvaćala odgovarajuću koničnu obodnu površinu nagiba razupornog konusa. Kao naslon, na kojem se kliznu čahuru drži ispred razupornog konusa, služi prednosno prstenasta površina stepenice, koja ograničava razuporni konus. In the front-end design, it is provided that the sliding sleeve on the support protrudes beyond the limit pressure surface of the expansion cone. During ripping, the protruding material is distributed along the conical surface of the rupturing cone during high-pressure ripping between the rupturing surface and the sliding sleeve. Depending on the used material of the sliding sleeve and the size of the sliding sleeve, a more or less thin sliding film can be achieved between the expansion cone and the expansion sleeve. Particularly good experimental results were achieved with a sliding sleeve made of polyamide, which included a suitable conical peripheral surface of the slope of the flared cone. As a support, on which the sliding sleeve is held in front of the spreading cone, the annular surface of the step, which limits the spreading cone, serves as a support.

Na toj stepenici leži klizna čahura sa svojom čeonom površinom, koja je okrenuta dalje od moždanikove stabljike. On that step lies the sliding capsule with its frontal surface facing away from the brain stem.

Razuporna čahura obuhvaća koničnu unutarnju površinu, koja se lako prilagodi na nagi razupornog konusa. Također i konična unutarnja površina razuporne čahure dopirnosi željenom učinku, da se jedan dio materijala razuporne čahure jednomjerno i tanko porazdjeli po razupornom konusu kod razupiranja. The diaphragm sleeve includes a conical inner surface, which is easily adjusted to the angle of the diaphragm cone. Also, the conical inner surface of the expansion sleeve achieves the desired effect, that a part of the material of the expansion sleeve is uniformly and thinly distributed throughout the expansion cone during expansion.

Umjesto od umjetne tvari sastojeće se klizne čahure može se upotrebiti također kliznu čahuru od mekane kovine, npr. olova. Instead of a sliding sleeve made of synthetic material, a sliding sleeve made of soft metal, eg lead, can be used.

Izum ćemo u daljnjem pomoću izvedbenog primjera, predstavljenog u priloženom nacrtu pobliže predstaviti. In the following, we will present the invention in more detail with the help of an implementation example, presented in the attached drawing.

Na crtežu predstavljen kovisnki razuporni moždanik je umetnut u uvrt 1 stijene 2. Razuporni moždanik sastoji se od stabljike 3, razupornog konusa 4, koji je povezan sa stabljikom 3, razuporne čahure 5 i pričvrsnog vijka 6. Između razuporne čahure 6 i moždanikove stabljike 3 nalazi se kao opružni prsten 7, zasnovan sigurnosni element, koji razupornu čahuru 5 fiksira u uvrtu 1 prije razupiranja. In the drawing, the Kovisnik ramrod is inserted into the screw 1 of rock 2. The ramrod consists of a stem 3, a ramrod cone 4, which is connected to the stem 3, a ramrod sleeve 5 and a fastening screw 6. Between the ramrod sleeve 6 and the ramrod stem 3 is is used as a spring ring 7, a safety element based on which the collapsible sleeve 5 is fixed in the screw 1 before collapsing.

Između razupornog konusa 4 i razuporne čahure 5 je raspoređena klizna čahura 8, koja se oslanja na prstenastoj površini 9 stepenice 10, koja graniči na razuporni konus 4. Prstenasta površina 9 služi ujedno kao naslon za kliznu čahuru 8. Ista obuhvaća unutarnji promjer, koji odgovara promjeru odsječka 11 stabljike 12, koja hvata kroz razupornu čahuru. Between the expansion cone 4 and the expansion sleeve 5, a sliding sleeve 8 is arranged, which rests on the annular surface 9 of the step 10, which borders on the expansion cone 4. The annular surface 9 also serves as a support for the sliding sleeve 8. It includes an inner diameter, which corresponds diameter of the section 11 of the stem 12, which grips through the gaping sleeve.

Razuporno tijelo sa svojim razupornim konusom 4 je preko stabljike 12 i navojnog odsječka 13 usko povezano s moždanikovom stabljikom 3. Ako se sada pričvrsni vijak 6 pritegne, time se pomakne moždanikova stabljika 3 zajedno s razupornim konusom 4 u smjeru van uvrta. Razuporna čahura 5 sa sigurnosnim elementom 7 u uvrtu je lokalno fiksirana upadna klizna čahura 8 i razuporni konus 4 u razupornu čahuru 5, te je prošire, dok razuporna čahura 5 uz željeni pritisak ne nalijegne na stijenu uvrta. The spacer body with its spacer cone 4 is closely connected to the stem 3 via the stem 12 and the threaded section 13. If the fastening screw 6 is now tightened, the spacer stem 3 together with the spacer cone 4 moves out of the screw. The burst sleeve 5 with the safety element 7 is locally fixed in the screw, the falling sliding sleeve 8 and the burst cone 4 in the burst sleeve 5, and they expand it, until the burst sleeve 5 with the desired pressure abuts on the wall of the screw.

Kod razupiranja se jedan dio u području naslona 10 stršećeg materijala klizne čahure 8 radi visokog pritiska porazdijeli od razuporne čahure 5 preko konusne površine razupornog konusa 4. Pri tome se zapune najmanje rupe konusne površine, čime se znatno poveća klizna sposobnost između razuporne čahure 5 i razupornog cunja 4. Ovo nema za posljedicu samo to, da se kod razupiranja upotrebljava manji okretni moment na pričvrstni vijak 6, nego se znatno poboljša postupak dodatnog razupiranja kod naknadno proširenja u uvrtu 1. Opružni prsten 7 kao sigurnosni element mora prenositi manje sile držanja, da bi spriječio skliznuće razuporne čahure 5 iz uvrta 1. During expansion, one part in the area of the support 10 of the protruding material of the sliding sleeve 8 is distributed due to high pressure from the expansion sleeve 5 over the conical surface of the expansion cone 4. At the same time, the smallest holes of the conical surface are filled, which significantly increases the sliding ability between the expansion sleeve 5 and the expansion pin 4. This does not only result in a smaller torque being used on the fastening screw 6 when unzipping, but the additional unzipping process is significantly improved during the subsequent expansion in screw 1. The spring ring 7 as a safety element must transmit less holding force, so that would prevent sliding of the spacer sleeve 5 from the screw 1.

U izvedbenom primjeru sastoji se klizna čahura 8 od poliamida, dok su ostali dijelovi razupornog moždanika od kovine. In the exemplary embodiment, the sliding sleeve 8 is made of polyamide, while the other parts of the tensioning rod are made of metal.

Claims

1. Razuporni moždanik s razupornim konusom, kojeg se može uvući u razupornu čahuru, koji je raspoređen na jednom kraju moždanikove stabljike, i sa drugog kraja moždanikove stabljike kao vijak ili slično zasnovanim pričvrsnim sredstvom, naznačen time, da je na razupornom konusu (4) zasnovan naslon (9), koji gleda u smjeru moždanikove stabljike (3), kod čega na naslon (9) naliježe ispred razupornog konusa (4) raspoređena s razupornom čahurom (5) preoblikujuća klizna čahura (8); i da je razupornu čahuru (5) moguće potiskivati preko klizne čahure (8) na razuporni čunj (4).1. A poppet cone with a poppet cone, which can be pulled into a poppet sleeve, which is arranged at one end of the poppet stem, and from the other end of the poppet stem as a screw or a similar-based fastening means, indicated by the fact that on the poppet cone (4) based rest (9), which looks in the direction of the brain stem (3), where the rest (9) rests in front of the expansion cone (4) arranged with the expansion sleeve (5) and a reshaping sliding sleeve (8); and that the expansion sleeve (5) can be pushed over the sliding sleeve (8) onto the expansion cone (4).

2. Razuporni moždanik prema zahtjevu 1, naznačen time, da razuporna čahura (8) na naslonu (9) strši preko granične površine plašta razupornog konusa (4).2. A diaphragm valve according to claim 1, characterized in that the diaphragm sleeve (8) on the support (9) protrudes over the boundary surface of the diaphragm of the diaphragm cone (4).

3. Razuporni moždanik prema jednom od zahtjeva 1 ili 2, naznačen time, da klizna čahura (8) obuhvaća koničnu obodnu površinu.3. Diaphragm valve according to one of claims 1 or 2, characterized in that the sliding sleeve (8) includes a conical peripheral surface.

4. Razuporni moždanik prema zahtjevu 3, naznačen time, da su nagibi razupornog konusa (4) i klizne čahure (8) približno jednaki.4. A diaphragm valve according to claim 3, characterized in that the slopes of the diaphragm cone (4) and the sliding sleeve (8) are approximately equal.

5. Razuporni moždanik prema jednom od prethodnih zahtjeva, naznačen time, da je naslon prstenasta površina (9) stepenice (10), koja graniči na razuporni konus (4).5. A gaping brain according to one of the previous claims, characterized in that the support is the annular surface (9) of the step (10), which borders the gaping cone (4).

6. Razuporni moždanik prema jednom od prethodnih zahtjeva, naznačen time, da razuporna čahura (5) obuhvaća koničnu unutarnju površinu, koja je prilagođena nagibu razupornog konusa (4).6. A diaphragm valve according to one of the preceding claims, characterized in that the diaphragm sleeve (5) comprises a conical inner surface, which is adapted to the slope of the diaphragm cone (4).

7. Razuporni moždanik prema jednom od prethodnih zahtjeva, naznačen time, da se klizna čahura 8 sastoji od preoblikujućeg materijala kliznih svojstava.7. A gaping brain according to one of the previous claims, characterized in that the sliding sleeve 8 consists of a deformable material with sliding properties.

8. Razuporni moždanik prema zahtjevu 7, naznačen time, da se klizna čahura (8) sastoji od poliamida ili odgovarajuće umjetne tvari.8. A gaping brain according to claim 7, characterized in that the sliding sleeve (8) consists of polyamide or a suitable synthetic material.