Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
  • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
  • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form

Definitions

• the invention relates to a spacer for reinforcement, in particular a concrete wall, made of a spacer bar, at least one plate-shaped part, which is fixed to the upper part with the spacer bar
• Such a spacer 0 for reinforcement mesh is known from DE-OS 31 MO 505.
• the plate-shaped part is connected in an upper area to the spacer bar via a welded connection.
• the plate-shaped part In the region of B dens, the plate-shaped part has a U-shaped ⁇ ffnun is l anchored at the one leg of a spring element.
• the spring element protrudes into the opening and is formed on this one leg to the side elastically wegdrüc bar.
• reinforcement mat pushes the spring element to the side and pushes the rod in the U-shaped recess until it is approximately form-fitting rests on the bottom of the U.
• the curvature of the U is adapted to the thickness of the rod of the reinforcement mat used, so that different spacers are required for different thicknesses of reinforcement mat material.
• Such spacers can only be used for a certain size of the bars of the reinforcement mats, so that, for example on a construction site where different thicknesses of reinforcement mats are processed, different spacers adapted to these thicknesses must be available.
• a spacer that has been pushed on is very difficult to remove again, so that an incorrectly attached spacer can only be removed again by destroying it.
• B i a spacer known from DE-GM 77 32 466 brackets are attached to the spacer bar, which are bent essentially U-shaped from resilient wire.
• the ends of the wire clips are bent inwards so that one resilient lock results, which closes the opening delimited by the two legs of a clip.
• the legs of the wire clip can be bent open when greater forces occur. In order to counteract such bending, the diameter of the wire must have a relatively large value, which, however, is subject to narrow limits for economic and processing reasons.
• the U-shaped wire made of spring steel is welded to the spacer, so that with a strong wire a relatively long time cycle of the welding process is necessary, as a result of which the spring properties of the steel are negatively influenced and the clamping effect of the wire is no longer ' is guaranteed.
• a spacer known from DE-OS 25 23 530 has a spacer rod, to which clamp-like clamping forks are welded, which have a first region for clamping rods of a small diameter and a second region adjoining them for clamping rods have a larger diameter.
• the kra ⁇ iponnrt-gen parts consist of bent wire and are welded to the spacer bar. The strength of the wire is also limited due to the welded connection, so that a see rer fit of the spacer on the reinforcement mats is not guaranteed. Spacers of this type are also not suitable for holding and holding bars of reinforcement mats of any thickness within a certain range.
• a spacer in that the plate-shaped part has a recess on the side for at least partially receiving the rod of the reinforcement, and in that a section of the spring element immediately in front of the side of the plate-shaped part provided with the recess and in the main plane of which comes to rest, the spring element acting as a clamp being designed such that it can be elastically pushed away from this side of the plate-shaped part.
• the plate-shaped part which is welded to the spacer, receives a part of the bar of the reinforcement in the lateral recess.
• the rod is in contact with the section of the spring element located in front of the recess and is held in the recess by its spring force.
• An inserted rod of the reinforcement is on the one hand held in the recess in a virtually form-fitting manner and on the other hand is pressed into the recess by the spring force of the spring element.
• the spring element In the case of rods of relatively small diameter, the spring element is only elastically pushed away laterally by a small amount, a relatively large part of the rod protruding into the recess. The stick is held securely. A force of approximately 10 kg is required to insert a rod. In the case of relatively large rods, the spring element is pushed away laterally by a larger amount, so that the rod is pressed into the recess with a greater force.
• the plate-shaped part absorbs the high compressive forces that occur without deformation.
• the inventive The spacer can be used for all diameters of reinforcement bars that are usually used on a construction site, so that, for example, with a constant wall thickness, only one version of a spacer must be available on the construction site.
• the plate-shaped part is very inexpensive to manufacture as a stamped part and is fastened over a relatively large area to the spacer bar by means of a welded joint, so that an economical, versatile spacer is created.
• the spring element consists of a wire which is formed from carbon spring steel.
• the wire expediently has a diameter of approximately 1.5 mm, the strength of the wire is 180 kg / mm.
• the spring element has in a first area approximately the shape of a right-angled "Z", which is continued in the writing direction of a "Z” in a second area by an approximately rectangular, initially bent down and almost closed loop, the "Z “and the” loop "lie approximately in one plane, and a End portion of the "loop” is directed to the transition area from “Z” to the "loop".
• This end section of the loop forms the section of the spring element that comes to rest immediately in front of the recess in the plate-shaped part.
• the "Z” -shaped area of the spring element is provided for connection to the plate-shaped part.
• the “loop” as a whole acts like a coil spring, so that the forces are absorbed by the entire area when the loop is pushed away to the side. If the spring element consists of wire, it can be kept very thin due to the special geometry.
• the upper area of the plate-shaped part is provided with a bead into which the "Z" -shaped area of the spring element can be inserted.
• the "Z" -shaped area of the spring element in the transition area from the "Z” to the “loop” is provided with an angle of slightly> 90 °, preferably 95 °, whereas the bead in this area takes the form of a strictly rectangular "Z", so that one in the bead inserted spring element, the wire is pressed against the edges of the bead, whereby the spring element is held tensioned in the bead.
• the diameter of the wire is slightly larger than the depth of the bead.
• the plate-shaped part is connected to the spacer, which is preferably formed by spot welding, in such a way that a spring element inserted into the bead is clamped between the plate-shaped part and the spacer bar.
• This particularly advantageous arrangement enables a sufficiently large welded connection area between the plate-shaped part and the spacer without the spring element itself being connected to the spacer via a welded connection, so that no disadvantageous change in the spring properties of the wire due to the action of heat takes place during the welding process.
• the bead in the plate-shaped part also contributes to the stiffening thereof.
• Rods of different diameters can be held particularly securely in the recess in that they have a U- has a shaped contour, the straight base line of the "U” diverging in the direction of the lower region of the plate-shaped part with respect to a longitudinal axis of the vertical part of the "Z" of the bead.
• Bars of reinforcement mats can be inserted into the spacer between the plate-shaped part and the spring element in a particularly secure and simple manner in that the plate-shaped part tapers in the lower region immediately afterwards along an edge to the U-shaped recess. Below the area of the plate-shaped part which is provided with the recess, an approximately funnel-shaped or V-shaped area is thus delimited between the spring element and the plate-shaped part, and the placement of the spacer on the bars of the reinforcement mat is thus facilitated. After placement, only the spring force has to be overcome in order to press the rods into the spacer.
• Figure 1 is a side view of a plate-shaped
• Figure 2 is a plan view of the aforementioned part
• Figure 3 shows a spring element of an inventive
• Figure 4 is a partial view of a spacer according to the invention, which is supported on a formwork.
• a plate-shaped part shown in FIGS. 1 and 2, hereinafter referred to as plate 1, has an upper 2, middle 3 and lower region 4.
• the plate 1 is provided with a double T-shaped bead 5, the vertical part 6 of which extends from the upper 2 through the middle 3 and into the lower area 4, in which it ends.
• a central axis 7 of the vertical part 6 the bead 5 corresponds to the deepest base line of the bead 5 and runs parallel to an outer edge 8 of the plate 1.
• Two flat areas 9 and 10 of the plate 1 in the upper area 2 serve as a connecting surface with a spacer rod 11, as shown in FIG. 1 by the dash-dotted line Line is indicated.
• the plate 1 is connected to the spacer rod 11 by means of spot welding connections.
• the plate 1 has a recess 13 on a side 12 opposite the edge 8.
• the recess 13 has a roughly U-shaped profile, a base line 14 of the “U” diverging in a straight line in the direction of the lower region 4 with respect to the axis 7.
• the divergence angle ⁇ ? C shown in FIG. 2 is approximately 10 °.
• the legs 15, 16 of the U-shaped profile of the recess 13 run parallel to one another and approximately perpendicular to the axis 7, the leg 15 being longer than the leg 16 due to the divergence of the base line 14.
• the plate 1 tapers in the lower region 4, as seen from the top downwards, immediately after the recess 13 along an edge 17.
• the taper angle ⁇ is approximately 17 °.
• the plate 1 is designed as a stamped sheet metal part and can be manufactured continuously without waste in the direction of the axis 7.
• a spring element 20 shown in FIG. 3 has a first region 21, in which it assumes the shape of a right-angled "Z". Seen in the writing direction of a "Z", a second region 22 follows, in which the spring element 20 assumes the shape of an approximately rectangular, initially bent down and almost closed loop.
• the first region 21 and the second region 22 of the spring element lie in one plane.
• the loop of the second region 22 has an end section 24, the end 25 of which is directed towards a transition region 26 between the first region 21 and the second region 22 of the spring element 20.
• the transition region 26 is inclined relative to a vertical part or its axis 27 of the "Z" of the first region 21 by an angle in addition to the right angle of the "Z".
• the angle of inclination o is approximately 5 °.
• the first area 21 of the spring element 20 with a "Z" shape is designed such that it can be inserted into the bead 5 of the plate 1 shown in FIG. 2 in the upper area 2, the axis 7 of the bead 5 and the axis 27 of the vertical part of the first region 21 of the spring element 20 coincide (see FIG. 4). Due to the additional deviation by the angle ⁇ f of the transition region 26 from the vertical axis 27, the spring element 20 must be pressed into the bead 5 in the assembly of the spacer, whereby it is tensioned and presses against the walls of the bead 5.
• the spring element 20 is made of a wire made of carbon
• the spring element 20 has a diameter 28 which is slightly larger than a depth 29 of the bead 5 (see FIG. 1). When the spring element 20 is inserted into the bead 5, it projects slightly beyond a surface 30 of the plate 1. When using a wire, it is about 2/10 to 3/10 mm thicker than the depth 29 of the bead 5.
• the spring element 20 is pressed into the bead 5 and the spacer rod 11 is welded to the flat areas 9 and 10 of the upper area 2 of the plate 1.
• the Fede element 20 is clamped between the spacer rod 11 and plate 1.
• the bead 5 also serves for stiffening purposes for the plate 1.
• 4 shows part of a spacer according to the invention which is supported on a casing 31.
• the spacer rod 11 has a plastic cap 32 at its end. Caps made of materials with an affinity for concrete (eg polymer concrete) can also be used.
• a complete spacer which is intended to keep two reinforcement meshes at a distance from one another, is constructed in such a way that a mirror image of the part shown in FIG.
• the spacer according to the invention is placed on a rod 35 of a reinforcement mat, the rod 35 being in contact with the guide section 33 and the edge 17 of the plate 1.
• the placement is facilitated by the V-shaped design, so that this process can be carried out very quickly and without special attention.
• the rod 35 is brought between the end section 24 and the recess 13 by a strong jerk while overcoming the spring force of the loop of the spring element 20. In the embodiment shown in FIG. A force of approximately -10 kg is necessary.
• the diameter of the rod '35 is approximately equal to the diameter of the spacer rod 11.
• the indicated in Fig. 4 spacers may also reinforcing mats larger rods with diameter are held.
• Fig. 4 may also reinforcing mats larger rods with diameter are held.
• the diameter of the spacer rod 11 is about 5 mm
• the diameter range of the bars of reinforcement mats is about 5-10 mm, so that all common strengths of reinforcement mats can be used on construction sites.
• a spacer accidentally placed in the wrong place on the reinforcement mat can be jerkily pulled back from the rod while overcoming a force, without the spacer being destroyed or the spring being bent - in such a way that reuse would no longer be possible.
• a completely secure posture of the rod 35 of the reinforcement mat can be achieved.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Reinforcement Elements For Buildings (AREA)
• Building Environments (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6273262

Family Applications (1)

Country Status (7)

Citations (6)

Family Cites Families (2)

• 1985
  • 1985-06-14 DE DE19853521345 patent/DE3521345A1/de active Granted
• 1986
  • 1986-06-09 AU AU61424/86A patent/AU6142486A/en not_active Abandoned
  • 1986-06-09 WO PCT/EP1986/000344 patent/WO1986007401A1/de active IP Right Grant
  • 1986-06-09 EP EP86904127A patent/EP0227762B1/de not_active Expired - Lifetime
  • 1986-06-09 DE DE8686904127T patent/DE3670333D1/de not_active Expired - Lifetime
  • 1986-06-12 PT PT82750A patent/PT82750B/pt not_active IP Right Cessation
  • 1986-06-13 ES ES1986295468U patent/ES295468Y/es not_active Expired
  • 1986-06-13 ZA ZA864429A patent/ZA864429B/xx unknown

Patent Citations (6)

Non-Patent Citations (1)

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