Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
  • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/38—Connections for building structures in general
  • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
  • E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
  • E04G21/14—Conveying or assembling building elements
  • E04G21/142—Means in or on the elements for connecting same to handling apparatus

Definitions

• the invention relates to an anchoring bolt for concrete parts of the type mentioned in the preamble of claim 1.
• anchoring bolt is generally understood to mean elongated anchors which can have different cross-sections and cross-sectional shapes, for example polygonal in cross-section, for example square or rectangular, strip-shaped anchoring bolts as well as, for example, round ones.
• Anchoring bolts of the type mentioned at the outset are known which have the anchoring head at one end and the holding head at the other end, which is designed, for example, as a spherical head. Anchoring bolts of this type encounter difficulties if they are to be introduced into concrete parts in a mass production, in particular an automatic production, with reproducible accuracy and a high number of cycles.
• the invention has for its object to provide an anchoring bolt for concrete parts of the type mentioned in the preamble of claim 1 so that the anchoring bolt of whatever cross-sectional shape is suitable for fully automatic introduction into concrete parts in mass production and a quick, easy and trouble-free introduction both by hand and also made possible mechanically by means of assigned devices.
• the anchoring bolt can also be used as an elongated anchor of a different cross-sectional shape, e.g. be designed as a flat strip according to claim 12 or as a polygonal cross-section rod.
• the anchoring bolt according to the invention is simple in construction and inexpensive and therefore inexpensive to manufacture. Its additional guide part makes it possible to
• Anchoring bolts to be inserted fully automatically in the mass production of concrete parts by means of adapted devices, whereby the holding head and / or guide part serve for the safe, reproducible centering and alignment of the anchoring bolt and ensure its retention at a predetermined position of the concrete form in a reproducible manner, even under the influence of Concrete form poured concrete and its compaction by shaking the anchor bolts can be held firmly in place.
• the anchoring bolt with the anchoring head and / or guide part and / or holding head can be used as a sealing element of a device for insertion, with which the anchoring bolt fulfills a double benefit with these elements.
• anchoring bolts designed according to the invention can also be produced inexpensively with required, relatively narrow tolerances and are therefore relatively cheap.
• Another significant advantage is that such anchoring bolts can be stacked one above the other or side by side and / or somehow obliquely in space in a magazine and can be separated and therefore can be fed to an apparatus in automatic operation in cycles.
• FIG. 1 is a schematic section of a part of a concrete part with in its manufacture with anchored anchor bolts, according to a first embodiment
• FIG. 2 shows a schematic section approximately corresponding to that in FIG. 1 with an anchoring bolt according to a second exemplary embodiment
• Fig. 3 is a schematic section of a mold for concrete parts with an attached device for concreting an anchoring bolt, during concreting.
• the anchoring bolt 11 has an anchoring section 11 with an end-side, thickened, in particular approximately plate-shaped, anchoring head 13 and also an adjoining, projecting holding section 14.
• the holding section 14 carries at the free end in FIG. 1 on the right an approximately plate-shaped, thickened holding head 15, which is designed, for example, like the anchoring head 13 and faces it.
• the holding head 15 can be varied in terms of its shape and
• the anchoring bolt 11 can also be concreted in, the anchoring section 12 of which can be anchored with the anchoring head 13 within the concrete part 10, while in the region of the front holding section 14 around this by means of a recess body, for example approximately. bell-shaped or in particular hemispherical free space 17 is created, in which the holding section 14 projects freely.
• the anchoring bolt 11 is designed in such a way that it enables fully automatic introduction into mass production in the concrete parts 10.
• a guide part 18 is arranged on the length between the anchoring head 13 and the holding head 15, which is formed from a ring 19 in the first exemplary embodiment in FIG.
• the outer shape and size of the guide part 18, in particular of the ring 19, is essentially chosen as that of the anchoring head 13.
• the guide part 18 is also plate-shaped and thus round. It has the same outer diameter as the correspondingly designed anchoring head 13.
• the outer diameter of the guide part 18 and the anchoring head 13 is the same or slightly larger than the outer diameter of the likewise approximately plate-shaped holding head 15. It is particularly advantageous if the holding head 15 in the Diameter is slightly smaller than the anchoring head 13 and the guide part 18.
• the guide part 18 is an integral part of the anchoring bolt 11. It is in one piece with its shaft 16.
• the guide part 18, also in the form of the ring 19, is instead applied to the shaft 16, wherein it can be detachably held thereon and, for example, made of metal or plastic can exist.
• the ring 19 is at a greater distance from the anchoring head 13 than from the front holding head 15. The distance is dimensioned such that when the anchoring bolts 11 are inserted fully automatically, they can be kept aligned and guided in suitable devices and at the same time clamped and held securely.
• the anchoring bolt 11 is made complete with all elements as a rotating part, specifically as a rotating part, in particular as an automatic rotating part.
• the relatively narrow tolerances required for the trouble-free operation of the device for the fully automatic insertion of the anchoring bolts 11 can be reproduced and at low cost, so that the anchoring bolt 11 can be produced inexpensively in this way.
• it can also be produced in a different way, for example as a precision cast part, provided that relatively narrow tolerances are then also ensured.
• the anchoring bolt 111 has the approximately plate-shaped anchoring head 113 at the left end and the holding head 115 at the right end, which here is shaped approximately according to the cutout of a ball.
• the guide part 118 here consists of a sleeve 120, the outer diameter of which, including the holding head 115 surrounded by it, is selected to be at most as large as the outer diameter of the anchoring head 113.
• the guide part 118 is applied to the shaft 116, for example releasably mounted thereon.
• the sleeve 120 is made of plastic or the like, for example. elastic material, which facilitates such mounting. Instead, the sleeve 120 can also be permanently foamed onto the shaft 116 and, if necessary, the holding head 115.
• the anchoring bolt can be tensioned in the area of the holding head 15 and at the same time aligned and held in the area of the ring 19, the aligned guide and holder takes place in the anchoring bolt 111 according to the second embodiment by attacking the sleeve 120, whereby the clamping can take place in the area of the holding head 115.
• FIG. 3 shows an embodiment of a device 21 which is suitable for inserting and concreting an anchoring bolt 11 in the embodiment according to the first embodiment into a concrete part 10 to be formed in a mold 22 during its manufacture.
• the mold 22 has two mold walls 24, 25 delimiting a mold cavity 23 between them, of which the mold wall 25 is e.g. contains circular, sealable opening 26.
• the device 21 is held in place on the mold wall 25 by means of a carrier 28.
• She shows an approximately bell- shaped, internally hollow molded part in the form of a front head part 29 which can be pushed in the horizontal direction in the direction of arrow 27 into the opening 26 and into the mold cavity 23.
• the head part 29 has an approximately bell-shaped, for example spherical section-shaped, outer surface 30 which forms the free space 17 in the concrete part 10. In the shaping position shown in FIG. 3, the head part 29 passes through the opening 26 with a precise fit and tightly to the cylinder section 31.
• An externally projecting stop 32 adjoins the cylinder section 31, with which the head part 29 is shown in the and inserted state on the outer surface of the mold wall 25 with closure and sealing of the opening 26, the head part 29 is permanently pressed in the arrow direction 27 with its stop 32 against the mold wall 25.
• the head part 29 is held on a coaxial guide tube 33. At least in the area of the head part 29, this has a guide which is designed here as a guide bore 34 and continues through the head part 29 up to its front end with the same diameter and opens out there freely.
• the anchoring bolt 11 is aligned and held at least with its holding section 14 coaxially with the guide bore 34.
• the anchoring bolt 11 has been inserted by hand with the holding section 14 first into the free end of the guide bore 34, in a state in which the head part 29 with the guide tube 33 has been completely retracted in the opposite direction to the arrow 27, and so far back that between the front end of the head part 29 and the mold wall 25 there is still sufficient space to insert an anchoring bolt 11 into the guide bore 34 manually from the front.
• a drive 35 engages, by means of which the head part 29 with the guide tube 33 can be inserted into the mold cavity 2-3 with the closure and sealing of the passage 26 in the mold wall 25 in the direction of arrow 27 and by means of which the same parts can be shaped in the opposite direction to the arrow 27 can be removed and removed again with the release of the cemented-in anchoring bolt 11.
• the drive 35 has a translation drive, in particular a hydraulic or pneumatic working cylinder. 36.
• a translation drive in particular a hydraulic or pneumatic working cylinder. 36.
• the guide tube 33 forms the piston rod of this working cylinder 36, which carries at the right end a piston 37 which can preferably be acted upon on both sides and which is held and guided in a cylinder housing 38.
• the cylinder housing 38 sits on the carrier 28.
• the longitudinal center axis of the working cylinder 36 runs transversely, in particular approximately at right angles to the mold wall 25.
• the guide tube 33 is hollow on the inside, forming the guide bore 34 there.
• the device 21 is provided with a tensioning device 39 at the front end of the guide tube 33, by means of which the anchoring bolt 11 can be tightened in the region of its holding section 14, here its holding head 15.
• the tensioning device 39 is arranged between the guide tube 33 and the head part 29 and is effective.
• the clamping device 39 has a collet 40 fastened to the guide tube 33, the clamping jaws 41 of which contain the guide bore 34 inside, the clamping jaws 41 holding the anchoring bolt 11 on its holding head 1 5 e rf as senu nd fixed pa nnsn.
• the head part 29 has a clamping surface 42 tapering towards the front end in the shape of a truncated cone, which is adapted and assigned to the outer surface of the clamping jaws 41.
• the collet 40 contains an axial stop 43, which is only indicated schematically and which, for example, is made of elastically compressible material, for example. made of rubber, foam or the like.
• the insertion depth of an anchoring bolt 11 which can be inserted by hand into the guide bore 34 from the front can be limited in such a way that, as shown, the ring 19 of the guide part 18 is still in the region of the head part 29 and there within the guide bore, as shown 34 is aligned and guided and the holding head 15 is located in the region of the front ends of the clamping jaws 41 and can be clamped by means of the clamping jaws 41, as shown.
• the head part 29 is held and guided axially displaceably on the collet 40 of the guide tube 33.
• the guide tube 33 carries a radial stop 44, in particular a stop ring, which is fixed thereon and is received in an annular space 45 adjoining the stop 32 of the head part 29.
• the annular space 45 is delimited on the one hand by the stop 32 on one side of the stop 44 and on the other hand by a stop surface 46 located at the end of the annular space.
• the device 21 operates as follows. With each work cycle, an anchoring bolt 11 is inserted into the device 21 by hand in the orientation shown in FIG. 3. This is done in a position in which the guide tube 33 together with the working cylinder 36
• Collet 40 and the head part 29 is moved in the opposite direction to the arrow 27 in a completely retracted position.
• the stroke is dimensioned so large that there is sufficient space between the front end of the head part 29 and the mold wall 25, so that one can easily insert the anchoring bolt 11 with its holding section 14 into the guide bore 34 from the outside.
• the return spring 47 is relieved.
• the stop 44 bears against the stop surface 46, via which the head part 29 is entrained during the retraction movement.
• the insertion depth is limited by the axial stop 43 so that the ring 19 is in the area of the guide bore 34 and thus guides the anchoring bolt 11 in this
• Clamping area of the jaws 41 is located and thus in this axially spaced area there is also a guide for the anchoring bolt 11, which in this way is reproducibly and exactly aligned coaxially with the longitudinal center line of the guide tube 33.
• the collet 40 is not yet effective at this stage.
• the working cylinder 36 is activated, whereby the guide tube 33 with the head part 29 and inserted anchoring bolt 11 is pushed in the direction of arrow 27, the head part 29 moving in the manner described through the opening 26 in the mold wall 25 into the position shown in FIG. 3 becomes.
• the Head part 29 with its annular stop 32 firmly pressed against the mold wall 25, which ensures an additional good seal.
• the pressing force is transmitted from the annular stop 44 to the stop 32 via the return spring 47. If the stop 32 finds sufficient resistance for this sealing by pressing, the return spring 47 is compressed. As a result, the collet 40 moves axially further into the head part 29 in the arrow direction 27 relative to the head part 29.
• the working cylinder 36 When the compacting process of the concrete part 10 is completed, the working cylinder 36 is activated in the direction opposite to the arrow 27.
• the guide tube 33 is pulled to the right. Due to the return spring 47 and the axial gap between the stop 44 and the stop surface 46, the collet 40 is first pulled out relative to the head part 29 and relaxed so far that its relaxed clamping jaws 41 hold the head 15 of the anchoring bolt 11 release. The head part 29, however, is still pressed against the mold wall 25.
• the clamping jaws 41 have steps on the inside which form a stop for limiting the insertion depth of the anchoring bolt 11 to be inserted by hand and replace the axial stop 43.
• the guide tube 33 is continued into the collet 40 and its guide bore 34 with a reduced diameter, this section fulfilling the function of the axial stop 43.
• a permanent magnet is provided as an axial stop, which e.g. is held on a shoulder of the guide tube 33 protruding into the guide bore 34 of the collet 40 at the front end.
• the permanent magnet ensures an additional mounting of a manually inserted anchoring bolt 11 and ensures its positioning.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Joining Of Building Structures In Genera (AREA)
• Moulds, Cores, Or Mandrels (AREA)

Priority Applications (4)

Applications Claiming Priority (3)

Publications (1)

Family

ID=37834114

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (8)

Citations (2)

Family Cites Families (4)

• 1985
  • 1985-12-06 DE DE8536798U patent/DE8536798U1/de not_active Expired
  • 1985-12-06 DE DE3543195A patent/DE3543195C2/de not_active Expired - Fee Related
• 1986
  • 1986-11-21 EP EP86116159A patent/EP0230542A1/de not_active Withdrawn
  • 1986-12-03 EP EP87900097A patent/EP0248061B1/de not_active Expired
  • 1986-12-03 WO PCT/EP1986/000699 patent/WO1987003638A1/de active IP Right Grant
• 1987
  • 1987-08-05 DK DK408487A patent/DK156036C/da not_active IP Right Cessation

Patent Citations (2)

Also Published As

Similar Documents

Legal Events