CS9003934A2 - Needle carrying gripper for rapier looms - Google Patents

Abstract

In a gripper strap (N) for gripper looms, the thickness of the strap (N) is gradually reduced, over at least part of its cross section, starting from an area (2) close to the end (3) carrying the gripper and extending towards the opposite end (4). In said strap (N), the notches into which engage the teeth of the wheel moving the strap follow at a variable distance, depending on the position taken up therein by the neutral bending axis.

Description

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BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a pillar body formed by high-pressure soil hardening in which it is longitudinally supported with a reinforcement and a method of forming such a body. In the case of high-pressure soil consolidation, the so-called nozzle, in the case of injections with a jet-type under pressure of 50 to 10 MPa, the soil around the borehole disintegrates and mixes with the cement suspension. By high pressure, the structure of the soil is completely disrupted and the rotating motion of the drill rod creates a mixed mix of soil and cement suspension in a single operation. After hardening of the reinforcement material, a column-like body capable of carrying a load is created. However, the bodies produced in this way can be subjected to a compressive stress because, due to the poor quality of the concrete, their tensile strength is very low.

Although attempts have been made to increase the load-bearing capacity of such column-shaped ones. · '-. but by such an increase · was only very limited. The glue-lining is because it has a substantially higher load capacity than prior art bodies of this type. The essence of the invention is that the pillar reinforcement 7 is constituted by a prestressed steel thimble which is connected to the column body by its end facing the earth 4 and loaded at the other end; Preload. 3 o

Although it has been known for a long time that the introduction of predominantly concrete components can be increased. their bending strength. However, the U-bodies made by high-pressure reinforcement of earth have never been used before: probably; however, the introduction of the precursor is impossible for such bodies with poor concrete quality.

According to a preferred embodiment of the invention, a seat steel plate is arranged on the upper side of the columnar body with which the steel tensile element is connected. According to one embodiment, the body according to the invention can be formed in such a way that a steel tensile element provided on an arbitrary length with separating means, e.g. : reinforcement materials. After its hardening, the lower end of the steel tensile member is connected to the column body. According to an embodiment of the invention, a bore is formed in the column body into which a steel tensile element is inserted and in the length of the anchoring of the panel, the annular space between the bore wall and the panel is filled under the I-curing material, for example cement or epoxy resin .

The invention will be explained with reference to the drawing showing a columnar body in longitudinal section,

An elephant body formed by a high pressure die;

4. In the region of the anchoring length 4, the steel plate 3 is connected to the column body 1 by an embossed material, for example a cement. or an epoxy resin, in the free-length region δ, the steel tensile element 3 is surrounded by a protective tube 7, so that it is separated from the post-body 1. A seal is disposed between the anchoring length 4 and the free length 6 of the tensile member 3.

On the pillar body 1, there is a concrete-seated seat q and a steel plate něm is placed thereon. The prestressing force acting on the column body 1, which acts on the retaining element lo, is connected to these pillar bodies. The prestressing force is so great that all the bending tensile stresses, which would have no prestress so that only pulling is present in the column body 1. '

The steel tensile element 3 can be made of rods, wires, strings, and the like, and is known to be biased by a biasing force in the known manner, as noted, the steel tensile member 3 can be inserted into bore 2 in a thin column body 1, whereupon a pressure-hardening material 5 is introduced into the space in its anchorage length 4. After hardening, the steel tensile element 3 can tension the switching silon.

However, according to the invention, it is also possible to insert the steel tensile element 3 into the pillar body prior to hardening, taking care that the pillar body 7 is separated from the steel tensile element 3. use all of the measures known in the prestressing of reinforcement.

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Claims (4)

JC * // - 6 - 1Δ J_.E..N__T OUR CLAIMS 1. A columnar body formed by a high-pressure reinforcement of the soil, which is supported longitudinally, characterized in that the reinforcement is constituted by a prestressed steel-drawing member (3) which is connected to the column body (1) by its rear-facing rear end and loaded at the other end with team. 2. A body according to claim 1, characterized in that a steel plate (1) with which a steel tensile element (3) is connected to the upper side of the column body (1). 3. A method of forming a pillar body according to claim 1, wherein the steel tensile element (3) provided on its free length (6) with separating means, e.g. into a still soft reinforcing material. ' 4. A method of forming a columnar body according to claim 1, characterized in that. a bore (2) is formed in the pillar body (1) into which the steel thimble f3 is inserted and filled with the hardening material in the length of its anchoring (4) between the bore wall (2) and the steel tensioner (3) (5), for example, cement or epoxy resin. r "v: · -> - O— o <oDO?; X) <L. rn _ - <lr LO G3 o" "what" '<Vt what