CN203641301U

CN203641301U - Eccentricity preventing coupler

Info

Publication number: CN203641301U
Application number: CN201320645067.1U
Authority: CN
Inventors: 刘运武
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-20
Filing date: 2013-10-20
Publication date: 2014-06-11
Anticipated expiration: 2023-10-20

Abstract

The utility model discloses an eccentricity preventing coupler, and aims to provide a coupler which is simple in structure and low in manufacture cost, and durable in use and convenient to maintain as two shafts are not concentric. The coupler adopts the technical scheme that two couplers which are respectively installed in a position where a driving transmission shaft is connected with a driven transmission shaft are mutually overlapped and sleeved by taking three, four or more squares as the centers and taking square space with the corresponding number of squares at the inner part, the large coupler is arranged on the outer side, and the small coupler is arranged on the inner side; a gap is formed between the two couplers, namely the two couplers are not closed; a plurality of springs are installed in the gap; the inner end socket of the spring is positioned in a shallow hole of the square; the outer end socket of the spring extends into a screw hole on the outer side and is closed to the top of a screw; the screw hole is positioned on the periphery of the couplers the inner part of which forms space. The spring has a function of responding to deformation, so that when two shafts are off center during operation namely the two shafts are not in an identical straight line, the two shafts cannot be clamped, and relative friction of the two couplers is avoided.

Description

A kind of anti-eccentric shaft coupling

Technical field

The utility model relates to two shaft connectors in mechanical transmission, is more particularly more definitely that the driven axle that is driving shaft and working machine by this coupling by the output shaft of speed reducer interconnects to be integrated and does run-in synchronism.

Technical background

Although coupling has varied, the simplest also the most the most frequently used one as depicted in figs. 1 and 2; The rear end top of driven axle 1 and driving shaft 2(main quilt or be situation conversely) front end top be separately installed with coupling 3 and coupling 4, the two is each other with the mutual fit of concave-convex, driving shaft 2 is the same with driven axle 1 to be affixed same position and to have toward each other longitudinal keyway 5 with coupling, pin key 6 is installed in keyway, its effect is to realize the two run-in synchronism, and driven axle 1 its rear end end surface and coupling groove 11 bottom surfaces maintain an equal level.This coupling is because of simple in structure, manufacture easily and be widely adopted, but part also comes with some shortcomings: driving shaft great majority are output shafts of speed reducer, in installation, be difficult to reach completely concentric with the driven axle of working machine, even if diaxon is that a straight line connects without off normal when mounted, after a period of time of turning round, be common occurrence because the wearing and tearing of bearing and mechanical vibration cause losing shape, in the time that diaxon is slightly deposited bias, concavo-convex joint place is too tightly difficult to rotate, too pine must be skidded and easily wearing and tearing, therefore often need to repair and frequent replacing, not only delayed work mistake but also operating cost high.Some producers, in order to solve because of eccentric disadvantage easy to wear, use the most representative gimbal coupling instead, by name universal, can only be in fact that four points can carry out back rotation up and down, if taking one week as 360 ^ometer, it is also only 4/360ths, still fundamentally eliminates not enoughly, and manufacture cost improves, and usually works the screw rod of the effect of being connected and fixed before and after splitting off because of diaxon off normal.

Summary of the invention

The utility model is for solving above-mentioned deficiency, aims to provide one both simple in structure and to manufacture cost low, complies with again diaxon off normal and long-lived a kind of coupling, adopts to give technological scheme and be achieved.

Two left and right coupling are each other taking interior as tetragonal body, outer is an outer overlap joint fit in cubic space mutual, its section be between inside and outside two squares up and down four limits stay certain interval for mounting spring, interior its four direction of outer four directions for space all has screw, and spring outer end is placed in to outside screw, screw outside has screw rod corresponding with spring top, be that one, spring is affixed with interior tetragonal body outside shallow bore hole, screw top end surface in other end and screw is affixed, as long as screw screw rod just can to spring exert pressure it is shortened and elastic force be compression resistance increase, one of twin shaft is that one of active is the passive run-in synchronism of doing, spring is made a concession because of pressurized, not just automatically stretching of pressurized of another side relatively, like this interior tetragonal body its although four-way plane and outside interior overlap certain length for stack fit mutually for space the four limit planes that are greater than tetragonal body up and down, but there is not friction owing to not being affixed mutually, its plane is not affixed with spring yet simultaneously, thereby there is not the situation of being blocked because of diaxon decentraction yet.

The each direction of spring its up and down or each one of left and right, four direction totally 8 be together, both be applicable to the left-handed dextrorotation that is also applicable to, in length, can be together according to the such device of type size, also can be twice or more than twice, the spring of the each direction of single track is also not limited to two, and at least one is not limit at the most.Its outer rim can be justified can be square, also do not get rid of more than or be less than four directions for position and interior one of front and back coupling for cubic space after tetragonal body (or position is situation conversely each other, its principle of doing work is constant), overlap each other fit face do not allow be cylindrical,

In sum, technological points of the present utility model is, two coupling each other suit place taking one as square body is interior, with one be square space the corresponding mutual overlap joint fit of the two number formulary outside in it, the inside and outside fit face of each side leaves gap each other, spring is installed in gap, and the inner top of spring is arranged in Inner square body outside shallow bore hole, and top, outer end is affixed with the screw rod top in the screw of outside.

The beneficial effects of the utility model are, the one, simple in structure, manufacture easily and cost is low: can select Plate Steel blanking welding to combine at the square body of Inner, inner space is that square body can be selected Plate Steel cutting, also can combine by some, and need not get on the bus, planer; The 2nd, can comply with main quilt diaxon and have decentraction: because spring exists distortion function, in the time that driving shaft or driven axle are offset to some extent, at most it is that width differs that the surrounding gap that just the outer tetragonal body of Inner overlaps suit place each other slightly changes, and will not occur stuck or friction relatively; The 3rd, because two coupling never exist relative friction durable in use for separating shape in suit place each other; The 4th, change that spring need only back out that screw rod takes out from screw and easy to maintenance, and expense is little; Also have the large I that is stressed of spring the superiority such as to adjust by screw rod.

Brief description of the drawings

Fig. 1 is that traditional method is its structure of a kind of coupling and acting principle plan view the most frequently used in prior art;

Fig. 2 is coupling back, the left side top end section demonstration figure in Fig. 1;

Fig. 3 is the utility model plan view;

Fig. 4 is that the utility model structure represents schematic diagram with acting principle section;

Fig. 5 is that two coupling both ends of the surface outer rims are side's one circle exploded view bonded to each other.

Embodiment

Be described further below in conjunction with each accompanying drawing.

See figures.1.and.2, driven axle and driving shaft (main quilt is moved or is situation conversely) are set with fluted coupling 3 and protrude coupling 4 in jointing place each other, recessed and protruding mutual overlap joint is superposed to is close to shape, driving shaft 1 its rear end top end face and groove 11 bottom surfaces maintain an equal level, in length, position corresponding to coupling endoporus has keyway 5, pin key 6 is installed in keyway, and driving shaft 1 and coupling 4 endoporus are also same structure, and its effect is to realize each parts run-in synchronism.

With reference to Fig. 3 and Fig. 4, the two is that in one, foreign minister's lap connects stack fit for the inner coupling for tetragonal body of the inner coupling 7 for square space in rear end and front end 8, exist each other certain gap not press close to mutually, 8 springs 9 are installed in surrounding gap altogether, the inner top of each spring is arranged in the shallow bore hole (not shown) of tetragonal body 8 corresponding positions, top, outer end is arranged in corresponding positions screw (not shown) and screw rod 10 tops that space, outside is tetragonal body 7 and is affixed, screw rod in Fig. 3 and contained spring (not shown) are totally 16 of twice (totally 8 of one-sided twice upper, middle and lowers are only shown in figure) in length.Its acting principle be one of two coupling for initiatively one connect and driven axle run-in synchronism is done work for the passive driving shaft being driven by power.

With reference to Fig. 5, the coupling 7 that centre is square space and a crown head are that after tetragonal body, its tetragonal body for circular coupling 8, the two is bonded to each other with plane in external length in one in position.

Claims

1. a preventing offsetting coupling, be that rods arranged in horizontal line mutually overlaps and combines by two coupling, one of them is that one of active is the passive run-in synchronism of doing, it is characterized in that: two coupling each other suit place taking one as square body (8) is interior, with one be square space the corresponding mutual overlap joint fit of the two number formulary outside in it, inside and outside those these Liu of fit face are gapped in each side, spring (9) is installed in gap, the inner top of spring is arranged in square body outside shallow bore hole, and top, outer end is affixed with screw rod (10) top in the screw of outside.