CN2418981Y - Annular parts for steel chains - Google Patents

Abstract

The utility model relates to annular part for a steel chain, which comprises two C-shaped elements having the same structures, wherein each C-shaped element has a gap, and both sides of the gaps are respectively provided with a hole near the ends. The C-shaped elements corresponding to the gaps are respectively provided with a lug which is slightly smaller than the length of the gap; a plurality of convex parts and concave parts are arranged on each C-shaped element, and accordingly, the two C-shaped elements are correspondingly combined; the convex parts and the concave parts are matched and positioned. The C-shaped elements on both sides of each lug are respectively provided with screw holes corresponding to the holes. After the two C-shaped elements are correspondingly combined, screws penetrate through the holes and are locked in the screw holes in order to fix the two C-shaped elements; well heat treatment can be carried out on the surfaces of the C-shaped elements, and higher strength can be obtained.

Description

The ring-type element of iron chains

The utility model relates to a kind of loop configuration of iron chains, relates in particular to a kind ofly can carry out preferable heat treatment to the surface of C shape element and obtain the ring-type element of the iron chains of higher-strength.

General iron chains is to compose in series with a plurality of ring-type elements, its structure mainly can be divided into two kinds: wherein a kind of be with ring-type element bend near the annular but still keep a breach, another ring-type element can be inserted in by this breach, in the mode of welding this breach is sealed again, be concatenated into the iron chains of forming with a plurality of ring-type elements by that analogy.Because the iron chains that this kind mode is made needs to expend the considerable time on welding sequence, so manufacturing cost is higher, and its desired solder technology is also higher, if otherwise a ring-type element failure welding wherein causes iron chains therefore to cause fracture easily when hanging weight and causes danger.

Though another kind of iron chains also is to form with ring-type element, its ring-type element is then further formed with two C shape elements again; Consult shown in Figure 4, the iron chains ring-type element that this is traditional, include two C shape elements 1 of same structure, this C shape element 1 has a breach 15, these breach 15 both sides be respectively equipped with a hole 11 near the end, be provided with one with respect to the C shape element 1 of this breach 15 and be slightly less than the projection 16 of these breach 15 length, and on this C shape element 1, be provided with a plurality of teats 13 and recess 14.In addition, on the C shape element 1 of these projection 16 both sides, be respectively equipped with rivet A corresponding to aforementioned hole 11 positions, two C shape elements 1 can relatively be made up, and utilize this teat 13 to cooperate and locate with recess 14, in the mode of forging rivet A end is beaten distortion and made two C shape elements 1 be fixed together again after allowing rivet A pass the hole 11 of another C shape element 1 simultaneously, and make wherein the projection 16 of a C shape element 1 place breach 15 places of another C shape element 1 and these breach 15 sealings.Certainly, after a ring-type element 1 must being inserted in by the breach of additional C shape element 1, again with these breach 15 sealings.

Because iron chains normally is used to hang weight, so iron chains mostly is to bear pulling force when hanging weight, but must possess certain high strength, when therefore C shape element being heat-treated, must make its case hardness higher, inside then keeps certain toughness.Because above-mentioned traditional iron chains C shape element is to utilize Forging Technology that rivet is beaten distortion, the rivet skin breakage that causes hard (crisp) to change easily causes the fraction defective of product to improve, and has directly increased manufacturing cost.Otherwise, the necessary case hardness that reduces C shape element, but but this measure can reduce the intensity of iron chains, increased difficulty to design.

Main purpose of the present utility model is, a kind of ring-type element of iron chains is provided, mode with screw closure is combined into a ring-type element with two C shape elements, need not consider that forging can cause the factor of C shape element fracture, thereby can carry out preferable heat treatment and obtain higher intensity the surface of C shape element.

The purpose of this utility model is realized by following technical scheme.

A kind of ring-type element of iron chains, two C shape elements that comprise same structure, this C shape element has a breach, these breach both sides be respectively equipped with a hole near the end, be provided with a projection that is slightly less than this notch length corresponding to the C shape element of this breach, this C shape element is provided with a plurality of teats and recess, two C shape elements are relatively made up, and utilize this teat to cooperate the location with recess, it is characterized in that: be respectively equipped with screw on the C shape element of described projection both sides, after this two C shape element relatively makes up, this hole and screw corresponded to each other corresponding to the described hole position, and utilize screw to pass this hole and lock screw, so that two C shape elements are fixed.

The utility model need not consider that forging can cause the factor of C shape element fracture, thereby can carry out preferable heat treatment and obtain higher intensity the surface of C shape element.

For further understanding technology contents of the present utility model, characteristics and effect, exemplify following preferred embodiment now, and conjunction with figs. is described in detail as follows:

Fig. 1 is an exploded perspective schematic diagram of the present utility model.

Fig. 2 is a combination schematic perspective view of the present utility model.

Fig. 3 is the floor map that the utility model ring-type element cooperates traditional welding technology that ring-type element is connected in series.

Fig. 4 is an exploded perspective schematic diagram of commonly using the ring-type element of iron chains.

Shown in Figure 1, the utility model is made up of the C shape element 1 of two same structures, this C shape element 1 has a breach 15, these breach 15 both sides be respectively equipped with a hole 11 near the end, be provided with a projection 16 that is slightly less than these breach 15 length with respect to the C shape element 1 of this breach 15, and be provided with a plurality of teats 13 and recess 14 on this C shape element 1, this teat 13 be corresponding shape with recess 14, makes the teat 13 of two C shape elements 1 and the recess 14 can close mutually fit.On the C shape element 1 of projection 16 both sides, be respectively equipped with screw 12 in addition corresponding to aforementioned hole 11 positions, two C shape elements 1 can relatively be made up, and utilize this teat 13 to cooperate and locate with recess 14, allow screw 12 corresponding simultaneously with hole 11, and then pass this hole 11 with screw 2 and lock screw 12, with with two C shape elements 1 in conjunction with fixing, and make wherein the projection 16 of a C shape element 1 place breach 15 places of another C shape element 1 and with these breach 15 sealings (consulting shown in Figure 2).Certainly, after one ring-type element 1 must being inserted in by the breach 15 of additional C shape element 1, again this breach 15 is sealed, and be concatenated into an iron chains in regular turn, and can cooperate traditional welding procedure that the ring-type element serial connection is combined (consulting shown in Figure 3) voluntarily by the consumer.

From the above mentioned, the utility model is owing to need not adopt the Forging Technology mode in conjunction with two C shape elements the time, so when C shape element 1 is heat-treated, the case hardness of C shape element 1 is suitably improved and gain in strength, and when reducing assembling for the requirement of the hierarchy of skill, and then the reduction manufacturing cost, have practicality and progressive really.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims (1)

1, a kind of ring-type element of iron chains, two C shape elements that comprise same structure, this C shape element has a breach, these breach both sides be respectively equipped with a hole near the end, be provided with a projection that is slightly less than this notch length corresponding to the C shape element of this breach, this C shape element is provided with a plurality of teats and recess, two C shape elements are relatively made up, and utilize this teat to cooperate the location with recess, it is characterized in that: be respectively equipped with screw on the C shape element of described projection both sides, after this two C shape element relatively makes up, this hole and screw corresponded to each other corresponding to the described hole position, and utilize screw to pass this hole and lock screw, so that two C shape elements are fixed.

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