Tooling metal fitting of power transmission and distribution composite crossarm
A composite material, transmission and distribution technology, applied in the field of hardware, can solve problems such as cracking and affect the safety of line operation, and achieve the effect of reducing stress concentration, improving line operation safety, and simplifying tooling methods.
Active Publication Date: 2013-03-27
GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1
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Problems solved by technology
The traditional composite material cross arm is mostly made of continuous glass fiber as the reinforcing material and thermosetting resin as the matrix. The tooling is connected with the power transmission and distribution pole (tower) by drilling holes and bolts. This method is easy Stress concentration occurs around the hole wall, and then cracks are caused when the cross-arm hangs the net under load, which affects the safety of the line operation
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[0014] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0015] Such as Figure 1 to Figure 3 As shown, the power transmission and distribution composite cross-arm tooling of the present invention includes a pair of hoops 2, which are composed of a front hoop 21, a rear hoop 22 and a connecting piece 4, and the matching hoop 2 can be connected by the connecting piece 4 The cross arm 1 made of composite material is tightened, and the rear hoop 22 is provided with a screw hole 311 .
[0016] Also have combination fixture 3, and it is made up of first screw rod 31, second screw rod 32, first clamper 33, second clamper 35 and nut 34, and clamper is an elongate gap ring, is located at a corner The notch on the ring can be used to hook the edge of the angle steel on the transmission and distribution tower, and there are symmetrical holes on the ring to pass through the screw.
[0017] The first screw 31 passes through the conne...
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The invention relates to a tooling metal fitting of a power transmission and distribution composite crossarm. The tooling metal fitting comprises a split hoop (2), wherein the split hoop comprises a front hoop (21), a rear hoop (22) and connectors (4) for connecting the front hoop (21) and the rear hoop (22) in a detachable manner, the composite crossarm (1) is hooped by the split hoop through the connectors, and the rear hoop (22) is provided with screw holes (311); the tooling metal fitting further comprises combined clamps (3), wherein each combined clamp comprises a first screw (31), a second screw (32), a first clamping device (33), a second clamping device (35) and a screw cap (34); each first screw passes through the rear hoop, each second screw and each first clamping device in sequence; and each second screw also passes through each second clamping device, a 90-degree included angle is formed between each first clamping device and each second clamping device, and each screw cap is mounted after two edges of angle steel on a power transmission and distribution tower are hooked by a notch. The tooling metal fitting disclosed by the invention has the advantages of ensuring the effective connection, not only simplifying the tooling manner of the composite crossarm, but also reducing the stress concentration of the composite crossarm caused by drilling and improving the operation safety of a line.
Description
technical field [0001] The invention relates to a fitting for fixing a cross arm on a power transmission and distribution tower, in particular to a fitting fitting for a power transmission and distribution composite material cross arm. Background technique [0002] The cross arm is an important connecting part connecting the transmission and distribution towers and wires. Due to many problems in the practical application of the traditional cross arm, the composite material cross arm with great application advantages has emerged as the times require. As a new type of cross-arm product, composite material cross-arm has application characteristics such as excellent insulation performance, good design performance, and corrosion resistance. Therefore, during its operation, it can greatly guarantee the operation safety of transmission lines and reduce operation and maintenance costs. Since the application characteristics of the composite cross-arm are different from the traditiona...
Claims
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IPC IPC(8): E04H12/24
Inventor 吴杰辉潘吉林张子超叶容慧熊淦辉萧正阳杨鸿滨史小靖朱晓东林锋刘景哲柯锐
Owner GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU