Chain capable of reducing weight

Abstract

The invention discloses a chain capable of lightening weight which comprises a plurality of series units; each series unit comprises a plurality of chain plates which are in parallel and are overlapped on the left part and the right part, as well as two chain shafts which connect the neighboring chain plates; the chain plates are all provided with two end parts respectively provided with a shaft journal hole, and a jointing part which is arranged between the end parts and defines a weight lightening hole by a hole surrounding surface; wherein, the hole surrounding surface comprises two first sections which are respectively approaching to the shaft journal hole, as well as two second sections which joint the first sections together. The chain mainly changes the shape of the weight lightening hole to lead the upper sides and the lower sides of the first sections to further extend to the direction of the shaft journal hole so as to enlarge the area of the weight lightening hole; as the hole enlarging area of the weight lightening hole can not affect the structure intensity of the chain, the chain can further achieve the goal of lightening the weight under the situation of maintaining the due structure intensity of the chain.

Description

technical field [0001] The invention relates to a chain, in particular to a chain which can reduce the weight with a weight-reducing hole arranged on the chain piece. Background technique [0002] Referring to Figures 1 and 2, chains that can reduce weight in the past usually include: several series connection units 1, and each series connection unit 1 includes: two inner and outer parallel inner chain pieces 11, and two inner chain pieces 11 respectively The outer chain sheet 12 on the outside, the chain rollers 13 between the two inner chain sheets 11 at intervals on the left and right, and two chain shafts 14 connecting the adjacent chain sheets 11 and 12 in series. The above-mentioned inner chain pieces 11 all have two left and right spaced end portions 111, and a connecting portion 112 between these end portions 111, and each end portion 111 has a shaft pivot hole 113 for the chain shaft 14 to pass through. , and a protruding post 114 protruding from the periphery of t...

AI Technical Summary

Problems solved by technology

[0005] Although the known chain can achieve the purpose of reducing the overall weight of the chain through the weight-reducing holes 10, 123 of the inner and outer chain pieces 11, 12, the part that reduces the weight can still be strengthened.

In the design of the chain shaft 14, since the shaft base 141 and the riveting portion 142 of the chain shaft 14 have the same thickness, when the riveting portion 142 is expanded outwards by stamping to form the riveting flange 144, the riveting The flange 144 is prone to deflection, and cannot spread evenly around the periphery of the hollow channel 143, resulting in unstable riveting quality

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