DE20314470U1

DE20314470U1 - Composite material lay-up for load-bearing spar in textile machine has guide and clamp surfaces on the hollow spar for inserts with apertures for clamping screws

Info

Publication number: DE20314470U1
Application number: DE20314470U
Authority: DE
Original assignee: Karl Mayer Textilmaschinenfabrik GmbH
Current assignee: Karl Mayer Textilmaschinenfabrik GmbH
Priority date: 2003-09-18
Filing date: 2003-09-18
Publication date: 2003-11-20
Anticipated expiration: 2013-09-19

Abstract

A composite material load-bearing hollow spar has guide (16) and clamp surfaces (17) on the plastic hollow profile (1) for inserts (3) incorporating apertures for clamping screws (4). A fibre-reinforced composite load-bearing hollow spar (1) incorporates one or more layers of a woven textile (11, 12, 13) with the elongated fibres orientated in different directions and soaked in a resin or plastic bonding agent. The lay-up is cured in a mould or press. The spar has guide (16) and clamp surfaces (17) on the plastic hollow profile (1) for inserts (3) incorporating apertures for clamping screws (4). The guide (16, 16') and clamp surfaces (17, 17') are especially located within the spar (1) chamber. Each lay-up (11, 12, 13) consists of a single piece of material along the entire spar, and wraps around the spar at least once. The outer lay-up (13) consists of several groups of strengthening fibres or filaments (131, 132), of which the two outermost groups are in a cruciform array. One group is orientated primarily in circumferential direction, while the second group is primarily orientated in a longitudinal direction. One of the inner layers (11) has no more than two different groups (111) of strengthening fibres, one of which is in longitudinal presentation.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims

1. bar made of fiber-reinforced plastic hollow profile,
with reinforcing fibers or filaments for the plastic hollow profile ( 1 ),
which are integrated in one or more textile composite (s) ( 11 , 12 , 13 ), in groups in different directions, predominantly stretched, in several layers and
which are soaked in plastic or resin, pressed to give shape
with guide ( 16 ) and clamping surfaces ( 17 ) on the hollow plastic profile ( 1 ) for inserts ( 3 ) with openings to which openings or bores in the hollow plastic profile ( 1 ) for clamping screws ( 4 ) are assigned,
characterized by
that the guide ( 16 , 16 ') and clamping surfaces ( 17 , 17 ') are arranged within the hollow space of the hollow plastic profile ( 1 ),
that each composite ( 11 , 12 , 13 ) extends in one piece along the entire length of the ingot, in a circumferential direction, at least once around the hollow space of the hollow profile ( 1 ),
that the respective outer composite ( 13 ) consists of several groups of reinforcing fibers or filaments ( 131 , 132 ) which are stably connected to one another, of which the two outer groups - crossing one another - on the one hand predominantly in the circumferential direction and on the other hand predominantly in the longitudinal direction of the bar ( B, B...) And
that at least one inner composite ( 11 ) has a maximum of two differently oriented groups ( 111 ) of reinforcing fibers or filaments, one of the groups having reinforcing fibers or filaments that are oriented exclusively parallel to the longitudinal axis of the bar.

2. Barre according to claim 1, characterized in that the respective outer surface composite ( 13 ) is a fabric with warp ( 132 ) and weft elements ( 131 ) made of reinforcing fibers or filaments.

3. Barre according to claim 1, characterized in that in addition to the first, inner textile composite ( 11 ) in a second, inner textile composite ( 12 ), the reinforcing fibers or filaments in two groups ( 121 , 122 ) opposes each other are arranged diagonally.

4. Barre according to claim 1 to 3, characterized in
that the first, inner, textile composite ( 11 ) is a knitted fabric with reinforcing fibers or filaments ( 111 ) that are only integrated in the weft direction, and
that the second, inner, textile composite ( 12 ) is a biaxial knitted fabric, in which the reinforcing fibers or filaments ( 121 , 122 ) are bound in mutually opposite diagonal directions.

5. Barre according to claim 1 to 4, characterized in that the first inner textile composite ( 11 ) in at least a first, inner layer and at least a second, inner textile composite ( 12 ) arranged in at least one further, outwardly following layer are.

6. Barre according to one of claims 1 to 5, characterized in
that the surface composites ( 11 , 12 , 13 ) are connected to each other parallel to the longitudinal axis of the bar (B, B...) in a connecting section (e.g. a seam 14 , 15 ) to form a reinforcing layer ( 19 ) and
that the reinforcement layer ( 19 ) is deposited in a spiral around the longitudinal axis of the bar (B) in the wall of the hollow plastic profile ( 1 ).

7. Barre according to claim 1, characterized in
that the guiding ( 16 , 16 ') and clamping surfaces ( 17 , 17 ') for the inserts ( 3 , 3 ') with openings directly on the inner wall of the hollow plastic profile ( 1 ) with the formation of one or more positive guideway ( en) are formed along the longitudinal axis of the bar and
that the openings or bores ( 3 c, 3 c ') for the clamping screws ( 41 , 42 ) are made in the wall of the plastic hollow profile ( 1 ).

8. Barre according to claim 7, characterized in that the inserts ( 3 , 3 ') with openings in a foam core ( 2 ) are closed and at least with one, the clamping surface ( 17 , 1 T) facing section protrude into the guideway.

9. Barre according to claim 7, characterized in
that deposits with perforations (3, 3 ') on either side of the reduced cross-section webs (3 b) at least two sections (thread support 3 a, 3 a') (c 3, 3 c ') with threaded bores, and
that laterally outside one of the outer sections with tapped holes ( 3 c, 3 c ') a spacer ( 3 d) with a reduced cross section extends to the adjacent insert ( 3 , 3 ').

10. Barre according to claim 1, characterized in
that the bar (B, B...) consists of at least two segments (B1, B2, B3),
that the segments (B1, B2, B3) in the area of the connection with the support elements (S1, S2, S3) or in the area of couplings (K, K ') adjacent to the separating surfaces between the segments (B1, B2, B3) with openings or bores ( 3 c) for the clamping screws ( 41 ) in the wall of the hollow plastic profile ( 1 ).

11. Barre according to claim 10, characterized in
that the support elements (S1, S2, S3) and / or the couplings (K, K ') form a core with a textile composite (K11), the reinforcing fibers or filaments of which are aligned parallel to the longitudinal axis of the bar segments, and a sheath have at least one at least biaxially reinforcing, textile composite (K12, K13) and
that these laminates (K11, K12, K13), soaked in plastic or resin, are molded to give shape.