DK9200187U3

DK9200187U3 - Cutting head

Info

Publication number: DK9200187U3
Application number: DK9200187U
Authority: DK
Inventors: Laurids A Jessen
Original assignee: Laurids A Jessen
Priority date: 1992-10-12
Filing date: 1992-10-12
Publication date: 1992-12-11

Description

i DK 92 00187 U3and DK 92 00187 U3

Den foreliggende opfindelse angår et anhugningshoved til fastholdende anbringelse om hovedet på en fortrinsvis aksialt i en halvkugleformet fordybning i et betonelement forankret løftebolt med henblik på at løfte betonelementet 5 ved hjælp af et hejseværk såsom en kran.The present invention relates to a gripping head for holding placement around the head on a lifting bolt anchored preferably axially in a hemispherical recess in a concrete element in order to lift the concrete element 5 by means of a hoist such as a crane.

Fra DK patentskrift nr. 150 577 kendes et apparat til ophængning af et betonlegeme i et hejseværk på den ovenfor nævnte måde. Dette apparat har et sfærisk krummet tilslutningsstykke med en manøvrearm og en cirkelbueformet 10 slidsnot, hvis tværsnit er tilpasset formen af løfteboltens hoved, og som ved drejning af tilslutningsstykket fastholdende kan optage dette hoved. Det kendte apparat kræver ved fremstillingen omfattende og vanskelig bearbejdning, og dets påsætning på løftebolten såvel som dets fjernelse fra denne 15 er kompliceret og tidsrøvende.DK patent specification no. 150 577 discloses an apparatus for suspending a concrete body in a hoist in the manner mentioned above. This apparatus has a spherically curved connecting piece with a maneuvering arm and a circular arcuate 10 slot groove, the cross section of which is adapted to the shape of the head of the lifting bolt, and which by rotating the connecting piece can receive this head in a holding manner. The known apparatus requires extensive and difficult machining during manufacture, and its application to the lifting bolt as well as its removal therefrom is complicated and time consuming.

Det er opfindelsens formål at tilvejebringe et anhugningshoved af den indledningsvis nævnte art, som kræver ringe bearbejdningsmæssig indsats ved fremstillingen, og som er let at påsætte på og aftage fra løfteboltens hoved. 20 Dette formål opnås ifølge opfindelsen ved det i den kendetegnende del af krav 1 angivne.It is the object of the invention to provide a slashing head of the type mentioned in the introduction, which requires little machining effort during manufacture, and which is easy to attach to and remove from the head of the lifting bolt. This object is achieved according to the invention by what is stated in the characterizing part of claim 1.

Her er basisdelen, kæberne, akslerne og løfteøjerne elementer, som kan fremstilles ved ukompliceret bearbejdning og let kan samles med hinanden, og anhugningshovedet kan 25 let påsættes på hovedet af løftebolten eller fjernes derfra, når løfteøjerne og dermed kæberne er drejet til deres åbne tilstand, mens de i den lukkede tilstand under løftning af betonelementet fastholder boltehovedet mellem kæberne på grund af sammenklemningen af løfteøjerne ved hjælp af kraft-30 påføringen fra det anhugningsmiddel såsom en krog eller sjækkel, der er ført gennem løfteøjerne og løfter betonelementet .Here the base part, the jaws, the shafts and the lifting eyes are elements which can be manufactured by uncomplicated machining and can be easily assembled together, and the slicing head can be easily attached to the head of the lifting bolt or removed therefrom when the lifting eyes and thus the jaws are turned to their open condition. while in the closed state during lifting of the concrete element, they hold the bolt head between the jaws due to the squeezing of the lifting eyes by the force application of the attachment means such as a hook or shackle which is passed through the lifting eyes and lifts the concrete element.

Fortrinsvis er anhugningshovedet indrettet som angivet i krav 2. Herved aflastes akslerne for bøjningsmomenter, og 35 trækket i løfteøjerne overføres mere direkte til basisdelen. Det foretrækkes, at løfteøjernes plane anlægsflade er forøget 2 DK 92 00187 U3 som angivet i krav 3, hvilket forbedrer kraftoverføringen fra løfteøjerne til basisdelen navnlig ved skævt træk.Preferably, the cutting head is arranged as stated in claim 2. Hereby the shafts are relieved of bending moments, and the tension in the lifting eyes is transferred more directly to the base part. It is preferred that the planar abutment surface of the lifting eyes is increased 2 DK 92 00187 U3 as stated in claim 3, which improves the power transmission from the lifting eyes to the base part, especially in the case of skewed traction.

Ved en foretrukken udførelsesform for anhugningshove-det ifølge opfindelsen er kæberne udformede som angivet i 5 krav 4 og fortrinsvis som angivet i krav 5. Herved stabiliseres kæberne indbyrdes i stilling i den lukkede tilstand. Alternativt kan kæberne være udformet som angivet i krav 6.In a preferred embodiment of the cutting head according to the invention, the jaws are designed as stated in claim 4 and preferably as stated in claim 5. Hereby the jaws are mutually stabilized in position in the closed state. Alternatively, the jaws may be designed as claimed in claim 6.

Opfindelsen skal i det følgende beskrives nærmere, idet der henvises til tegningen, på hvilken 10 fig. 1 viser et anhugningshoved ifølge opfindelsen set fra siden, fig. 2 det i fig. 1 viste anhugningshoved set ovenfra, fig. 3 et snit langs linien III-III i fig. 2, 15 fig. 4 et snit langs linien IV-IV i fig. 2, fig. 5a anhugningshovedet set nedenfra med åbne kæber, fig. 5b anhugningshovedet set nedenfra med lukkede kæber, fig. 6 anhugningshovedet tildels i snit og anbragt 2 0 omkring hovedet på en aksialt i en halvkugleformet fordybning i et betonelement anbragt løftebolt samt et anhugningsmiddel i form af en krog i indgreb med løfteøjerne, og fig. 7 anhugningshovedet i perspektiv og set nedenfra. I fig. 1 er et anhugningshoved ifølge opfindelsen i 25 almindelighed betegnet med 1. Anhugningshovedet 1 omfatter en basisdel, der i almindelighed er betegnet med 2, og som består af en krave 3 med en plan og cirkulær øvre overflade 4 og en nedre ringformet flade 5 til anlæg mod overfladen af et betonelement 6 omkring en halvkugleformet fordybning 30 7 i dette, i hvilken der aksialt er indstøbt en løftebolt 8 med et hoved 9 (fig. 6) . Basisdelen 2 består endvidere af af en fra kraven 3 nedadragende del 10, der er formet som et kugleudsnit og passer i fordybningen 7 i betonelementet 6. I den nedadragende del 10 er der udformet en cylindrisk reces 11 (fig. 3) , i hvilken der findes to i hovedsagen spejlsymmetriske kæber 12a og 12b (fig. 5a og 5b). Kæberne 35 3 DK 92 00187 U3 12a og 12b har mod hinanden vendende recesser 15a og 15b til optagelse af hovedet 9 og en del af skaftet af en lofte-bolt 8 og fastholdelse heraf, når kæberne 12a og 12b er lukkede.The invention will be described in more detail in the following, with reference to the drawing, in which fig. 1 shows a side view of a sling head according to the invention, fig. 2 that in fig. 1 seen from above, fig. 3 is a section along the line III-III in fig. 2, fig. 4 is a section along the line IV-IV in FIG. 2, fig. Fig. 5a is a bottom view of the slicing head with open jaws; Fig. 5b shows the cutting head seen from below with closed jaws; Fig. 6 shows the attachment head partly in section and arranged 20 around the head on an lifting bolt arranged axially in a hemispherical recess in a concrete element and a attachment means in the form of a hook in engagement with the lifting eyes, and fig. 7 the cutting head in perspective and seen from below. In FIG. 1 is a suction head according to the invention generally denoted by 1. The suction head 1 comprises a base part, generally denoted by 2, and which consists of a collar 3 with a planar and circular upper surface 4 and a lower annular surface 5 for abutment. against the surface of a concrete element 6 around a hemispherical recess 30 7 therein, in which a lifting bolt 8 with a head 9 is axially embedded (Fig. 6). The base part 2 further consists of a part 10 projecting downwards from the collar 3, which is shaped as a ball section and fits into the recess 7 in the concrete element 6. In the downwardly projecting part 10 a cylindrical recess 11 (Fig. 3) is formed, in which there are two substantially mirror-symmetrical jaws 12a and 12b (Figs. 5a and 5b). The jaws 35 3 DK 92 00187 U3 12a and 12b have facing recesses 15a and 15b for receiving the head 9 and a part of the shaft of a ceiling bolt 8 and holding it when the jaws 12a and 12b are closed.

Kæberne 12a og 12b er fastgjort på hver sin aksel henholdsvis 13a og 13b, son er ført gennem boringer henholdsvis 14a og 14b i basisdelen 2 (fig. 4), og som rager op over dennes plane overflade 4, hvor de fortrinsvis ved svejsning er forbundet med hvert sit løfteøje henholdsvis 16a og 16b. Løfteøjerne 16a og 16b har hvert en plan nedre overflade i anlæg mod den øvre overflade 4 af basisdelen 2.The jaws 12a and 12b are fixed on their respective shafts 13a and 13b, respectively, which are passed through bores 14a and 14b, respectively, in the base part 2 (Fig. 4), and which protrude above its flat surface 4, where they are preferably connected by welding. each with its own lifting eye 16a and 16b, respectively. The lifting eyes 16a and 16b each have a flat lower surface in abutment against the upper surface 4 of the base part 2.

I anlæg mod denne overflade 4 og i ét stykke med hvert af løfteøjerne 16a og 16b er der på ydersiderne af disse anbragt halvcylindriske fremspring henholdsvis 17a og 17b, der tjener til forøgelse af løfteøjernes anlægsflade mod den plane overflade 4.In abutment against this surface 4 and in one piece with each of the lifting eyes 16a and 16b, semi-cylindrical projections 17a and 17b, respectively, are arranged on the outer sides thereof, which serve to increase the abutment surface of the lifting eyes against the flat surface 4.

I hver af de mod hinanden vendende flader af løfteøj erne 16a og 16b er der grænsende til overfladen 4 og i den bort fra akslen 13a henholdsvis 13b vendende del af løfteøjet tilvejebragt en reces 17a henholdsvis 17b som, når løfteøjerne 16a og 16b er i anlæg mod hinanden, kan optage hovedet og en del af skaftet af en i basisdelen 2 fastgjort bolt 18 med henblik på at overføre trækkræfter fra løfteøjerne 16a og 16b til basisdelen 2.In each of the facing surfaces of the lifting eyes 16a and 16b, a recess 17a and 17b, respectively, is provided adjacent to the surface 4 and in the part of the lifting eye facing away from the shaft 13a and 13b, respectively, when the lifting eyes 16a and 16b are in abutment against each other, can receive the head and a part of the shaft of a bolt 18 fixed in the base part 2 in order to transmit tensile forces from the lifting eyes 16a and 16b to the base part 2.

Endelig findes der i den ene af kæberne 12b en styrestift 19, der i den i fig. 5b viste lukkede tilstand af kæberne 12a og 12b passer ind i en overfor liggende boring i den anden kæbe 12a med henblik på at stabilisere den indbyrdes stilling af kæberne 12a og 12b.Finally, in one of the jaws 12b there is a guide pin 19 which in the position shown in fig. 5b, the closed condition of the jaws 12a and 12b fits into an opposite bore in the second jaw 12a in order to stabilize the relative position of the jaws 12a and 12b.

Anhugningshovedet ifølge opfindelsen anvendes på følgende måde: I en tilstand, hvor løfteøjerne 16a og 16b er drejet bort fra hinanden, og hvor følgelig kæberne 12a og 12b befinder sig i den i fig. 5a viste stilling, anbringes anhugningshovedet 1 centralt over en halvkugleformet fordybning 7 i et betonelement 6, som skal løftes, og sænkes ned i 4 DK 92 00187 U3 denne fordybning 7, således at hovedet 9 og en del af skaftet på en aksialt i fordybningen 7 anbragt løftebolt 8 rager op i mellemrummet mellem kæberne 12a og 12b.The slicing head according to the invention is used in the following way: In a state where the lifting eyes 16a and 16b are rotated away from each other, and where consequently the jaws 12a and 12b are in the position shown in fig. 5a, the cutting head 1 is placed centrally over a hemispherical recess 7 in a concrete element 6 to be lifted and lowered into this recess 7, so that the head 9 and a part of the shaft on an axial in the recess 7 placed lifting bolt 8 protrudes into the space between the jaws 12a and 12b.

Løfteøjerne 16a og 16b drejes derpå til anlæg mod 5 hinanden, hvorved kæberne 12a og 12b drejes til deres i fig. 5b viste, lukkede stilling, i hvilken de omslutter hovedet 9 på løftebolten 8. I denne stilling føres et anhug-ningsmiddel såsom en krog 20 (fig. 6) ind i og fastgøres i øj erne i løfteøj erne 16a og 16b med henblik på at løfte 10 betonelementet 6. Under løftningen heraf holder trækket fra anhugningskrogen 20 løfteøjerne 16a og 16b sammen, så at recesserne 17a og 17b kraftoverførende omslutter hovedet på bolten 18 og således, at hovedet 9 af løftebolten 8 fastholdes mellem kæberne 12a og 12b.The lifting eyes 16a and 16b are then rotated to abut against each other, whereby the jaws 12a and 12b are rotated to their position in fig. 5b, in which position they enclose the head 9 of the lifting bolt 8. In this position, a hooking means such as a hook 20 (Fig. 6) is inserted into and fixed in the eyes of the lifting eyes 16a and 16b in order to lift 10 the concrete element 6. During its lifting, the pull from the hooking hook 20 holds the lifting eyes 16a and 16b together so that the recesses 17a and 17b transmissively enclose the head of the bolt 18 and so that the head 9 of the lifting bolt 8 is held between the jaws 12a and 12b.

15 Når anhugningshovedet 1 skal frigøres fra løftebolten 8, føres den slække anhugningskrog 26 ned over akslerne 12a og 12b, og løfteøjerne 15a og 15b kan igen drejes fra hinanden, hvorved kæberne 12a og 12b indtager deres i fig. 5a viste stilling, i hvilken de såvel som anhugningshovedet 1 kan løftes fri af løftebolten 8 ud af fordybningen 7.When the attachment head 1 is to be released from the lifting bolt 8, the slack attachment hook 26 is passed down over the shafts 12a and 12b, and the lifting eyes 15a and 15b can again be rotated apart, whereby the jaws 12a and 12b occupy their position in fig. 5a, in which they as well as the chopping head 1 can be lifted free of the lifting bolt 8 out of the recess 7.

2020

Claims

An attachment head (1) for holding placement around the head (9) on a lifting bolt 5 (8) anchored preferably axially in a hemispherical recess (7) in a concrete element (6) in order to lift the concrete element (6) by means of a hoisting device such as a crane, characterized in that the cutting head (1) comprises a base part (2) formed as a rotating body, consisting of a collar (3) with a flat upper surface (4) and a lower annular surface (5) for abutment against the surface of the concrete element (6) around the recess (7) therein, a part (10) projecting downwards from the collar (3), which forms a spherical section, which fits into the hemispherical recess (7) and has a cylindrical recess (11) with such a depth that the bottom of the recess (11) is located close above the head (9) of the lifting bolt (8), when the base part (2) is arranged in the recess (7) in the concrete element (6), and such a diameter that it can accommodate a pair of jaws (12a, 12b) arranged to be able to be passed over in open condition (Fig. 5a); the head (9) on the lifting bolt (8) and in the closed position (fig. 5b) retaining to be able to enclose the head (9) on and a part of the shaft of the lifting bolt (8), and where arranged close to each other and at the cylindrical wall in the recess (11) there are two bores (14a, 14b) perpendicular on the upper planar surface (4) of the base part (2), and two shafts (13a, 13b) are passed through each of said bores (14a, 14b) and attached to each of said jaws (12a, 12b), which shafts above the planar surface (4) of the base part (2) are fixed to or in one piece with their respective lifting eye (16a, 16b), each lifting eye (16a, 16b) having a planar surface 30 abutting against said planar surface (4 ), which lifting eyes (16a, 16b) abut each other when the jaws (12a, 12b) are in their closed condition.

An impact head (1) according to claim 1, characterized in that each of the lifting eyes 16a, 16b) has a recess (17a, 35) on their facing surface at the end of their flat surface facing away from the shaft (13a, 13b). DK 92 00187 U3 17b), which recesses (17a, 17b) are designed to be able to securely enclose the head of and a part of the shaft of a bolt (18) projecting from the planar surface (4) of the base part (2) and attached thereto. ) when the lifting eyes (16a and 5 16b) are abutting against each other.

Clamping head (1) according to claim 1 or 2, characterized in that the planar abutment surface of each lifting eye (16a, 16b) with the planar surface (4) on the base part (2) comprises the semicircular surface of a semi-cylinder (17a, 17b), attached to or in one piece with the lifting eye (16a, 16b).

An impact head according to any one of the preceding claims, characterized in that the jaws (12a, 12b) have complementary parts on their facing surfaces which, in the closed state of the jaws, engage stabilizingly with one another.

Clamping head according to claim 4, characterized in that one jaw (12b) includes a guide pin (19) for engaging a guide bore in the other jaw (12a) in the closed condition of the jaws.

An impact head according to any one of claims 1 to 3, characterized in that the jaws (12a, 12b) in their facing surfaces have recesses which in the closed condition of the jaws enclose the head of a bolt attached to the base part (2). 25