CN2092517U - Flat connecting ring for ring chain used in mine - Google Patents

Abstract

The utility model relates to a new flat connecting chain ring for ring chains used in mine, comprising two half chain rings and a fixed pin. Each engaged surface of the two half chain rings is a surface, engaged teeth of the two half chain rings are plane circular-ach teeth, and the parts are combined to form integration with strong rigidity. The utility model is arranged on a mining scraper conveyor for use. The utility model has high intensity, light weight, convenient assembly and disassembly. The new flat connecting chain ring for ring chains used in mine can passes through the chain wheels of the scraper conveyer regardless of being arranged on the horizontal position or vertical position and replace the connection members of various ring chains used in mine, and is used for various mining scraper conveyors.

Description

Flat connecting ring for ring chain used in mine

The utility model relates to a kind of parts on the mine flight conveyer.

Circle chain of mine is widely used on the mine flight conveyer of various models, coal industry standard " MT153-87 strand slat conveyer frog shape chain joint " is arranged the existing typical members that connects circle chain of mine of China and " the MT71-83 slat conveyer is with 14 * 50,18 * 64 open type chain rings ", these two kinds of coupling members all use threaded fasteners, frog shape chain joint assembly in use, because of mechanical vibration and the coal that is delivered, the violent friction of generations such as spoil makes wherein, and the undue wear inefficacy appears in individual part, make whole assembly loosening and deviate from, be directed at chain joint is broken; And the open type chain ring only tightens together opening part and scraper plate with a bolt, because the open type chain ring is broken in mechanical vibration and be subjected to the frequent variations of tensile stress to cause the nut loosening of fastening effect even come off; And the nut anti-looseness structure of all employings all can not stop nut loosening effectively, and this is the critical defect of open type chain ring.Coupling member is broken means the running of interrupting conveyer, and driving surface is mined to produce and is forced to stop.A common shortcoming of above-mentioned two kinds of coupling members is in use to be restricted: frog shape chain joint can only be installed on the ring of level attitude of coupled round-link chain, promptly can only play the anastomosis of one vertical (standing) ring, the open type chain ring then can only be installed in level attitude, the chain link that both sides are in vertical position links up, if dress is wrong slightly because of carelessness during operator's chain link position, coupling member will cause the conveyer accident through sprocket wheel the time.Also has the flat chain ring of a kind of round-link chain serration, its spring Xiao who plays fixation is to be subjected to transverse shearing force in chain ring work, easy deformation, thereby cause the dismounting difficulty,, can't load onto after taking apart sometimes because of the frequent dismounting of coal mining process need in the down-hole, be defective intrinsic on its structure, simultaneously, the flat chain ring of serration can not bear the curved power of bigger side direction.The flat chain ring of West Germany's RUD round-link chain can be used to connect big specification preferably as 30 * 108,34 * 126 round-link chain, but the face of joint of two half chain link respectively is concavo-convex arc surface, poor in processability, and small dimension round-link chain in not being suitable for.

The purpose of this utility model provides a kind of flat chain ring of circle chain of mine of new structure, to replace the coupling member of above-mentioned various circle chain of mine.Have enough mechanical strengths, meet or exceed the mechanical performance index of energy industry standard " the flat chain ring of circle chain of mine " defined.(this standard in nineteen ninety through the approval of State Bureau of Technical Supervision, Department of Energy (DOE), waiting settles the standard is promptly announced after the numbering).This chain ring can pass through sprocket wheel in the upright position again by sprocket wheel at level attitude, be not subjected to the restriction of installation site, and easy accessibility, when under mine, installing or changing the operator needn't consider chain ring residing be level attitude or upright position, not only increased safe in utilization but also bring great convenience to the operator.

Figure one is the utility model half chain link.

Figure two is the utility model scheme of installation, and (1) and (2) is two duplicate semi-rings, and (3) are fixing Xiao, and (4) and (5) are the end ring on two annular chains that connected.L, M, N, O are the plane that two and half chain link tooth roots, tooth top are in contact with one another

Half chain link shown in the figure one, two legs respectively have three teeth up and down, tooth root and tooth top are the plane, each tooth is the flat circle curved tooth, so, has just increased the length of tooth on the limited width of shank, make tooth portion have enough intensity to bear bigger longitudinal pulling force, the direction of each circle-arc tooth bending of last leg becomes 180 ° with the direction of following each circle-arc tooth bending of leg, and is just in time opposite, and the arc surface a in the middle of the last leg is for packing fixedly Xiao Shiyong into.

From figure two as can be seen, the present invention is made up of three parts, (1), (2) be two duplicate two and half chain links of size and dimension, and two semi-rings are buckled together as shown in the figure mutually, makes (1) and (2) constitute a complete chain ring by fixing Xiao (3).The both sides that the annular chains end ring (4) that is connected and (5) are enclosed within chain ring respectively join whole chain together.Installation situation is seen Fig. 2, when fixedly Xiao (3) taps down the hole, garden of the central opening of being made up of half chain link (1) and (2) with hand hammer, constitute the flat chain ring of a powerful steel body immediately securely, powerful pulling force by the round-link chain 4 and 5 that it connected is applied when having enough intensity to bear the slat conveyer running, when flat chain ring can produce the curved power of side direction during at the sprocket wheel of level attitude by conveyer, because intermeshing each flat circle curved tooth bending direction is opposite, half chain link 1 and 2 trends have been limited effectively to opposite sense rotation each other, because each circle-arc tooth is born the curved power of side direction, so the ability of larger side to curved power of bearing arranged; Similarly pound out fixedly Xiao (3) lightly during dismounting, can take apart smoothly with hand hammer.

Fixedly Xiao (3) is a solid, utilizing fixedly, Xiao (3) cooperates with the special of opening circular hole that half chain link (1), (2) are formed, make that fixedly Xiao (3) can not come off in transporting, carry and using, when when conveyer is in operative condition, half chain link (1) and (2) make two legs inwardly compress because of being subjected to powerful pulling force, because the elastic deformation that produces, fixedly Xiao (3) is tightly killed, make do not turned round in the influence of mechanical vibration, guarantee can not become flexible.

The utility model structurally has obviously different with the flat chain ring of West Germany RUD: half chain link each tooth of two legs up and down is the flat circle curved tooth, tooth root and tooth top are the plane, and each tooth of the flat chain ring of RUD is a straight-tooth, and the tooth root of last leg and tooth top are convex surfaces, and the tooth root of following leg and tooth top are concave surfaces; When promptly installing, the face of joint L of the utility model half chain link (1) and (2), M, N, each face of O is the plane, intermeshing tooth is the flat circle curved tooth, corresponding each face of the flat chain ring of RUD is the male and fomale(M﹠F) arc surface tooth that engages one another and then is straight-tooth, this processability regarding shape is poor, again because the tooth portion of leg is a concave surface under the flat chain ring of RUD, correspondingly weakened intensity, with middle small dimension as 14 * 50, when 18 * 64 grades connect, intensity obviously weakens, bear the ability of the curved power of side direction, do not use so the flat chain ring of RUD is suitable for middle small dimension round-link chain, the utility model has overcome this shortcoming, be not only applicable to the round-link chain of medium and small specification, and be equally applicable to the round-link chain of big specification, from making machining angle, the utility model can be equipped with the processing that suitable jig cutter can be finished half chain link with general lathe, the flat chain ring of RUD then needs complicated jig and cutter, even needs production machine could satisfy the requirements for quality of processing.

The utility model can replace the round-link chain frog shape chain joint by standard " MT153-87 " production in the strand slat conveyer of various centers, can directly be used in various centers double chain conveyor; Improved as blade structure double chain conveyor, then can replace MT71-83 and existing various open type chain rings, be used for various limits double chain conveyor, with 17B type and 22 types is example, these two kinds of types all adopt 14 * 50 round-link chain frog shape chain joints, flat chain ring with corresponding specification of the present utility model replaces, except that having above-mentioned high performance, only 0.34 kilogram of the every cover net weight of the utility model, the every cover net weight of frog shape chain joint that is replaced is 4.26 kilograms, be 1/12.5 of frog shape chain joint weight, both increased the usable horsepower of slat conveyer, saved great deal of steel for country again.

Claims (1)

1, the flat chain ring of a kind of circle chain of mine, by two and half chain links, fixing Xiao Zucheng, it is characterized in that each plane that two and half chain links engage one another is the plane, intermeshing tooth is the flat circle curved tooth, and using fixedly, Xiao is mounted for a flat chain ring with powerful rigidity with two and half chain links.

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