CN2378570Y

CN2378570Y - Ball coupling

Info

Publication number: CN2378570Y
Application number: CN99233444U
Authority: CN
Inventors: 刘继清; 谭毅; 尹显鳌
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-28
Filing date: 1999-05-28
Publication date: 2000-05-17
Anticipated expiration: 2009-05-28
Also published as: AU4908700A; WO2000073674A1

Abstract

The utility model relates to a ball coupling comprises driving part (1), ball (2) and follower (3), and its characterized in that driving part (1) and follower (3) are used for the unsmooth crisscross clearance of relative surface of hookup and leave, and ball (2) dress is in the rolling inslot that the side of concave-convex part was opened, and the diameter of ball (2) is greater than the clearance between driving part (1) and follower (3). The bearing has the characteristics of large bearing capacity, good shock resistance, suitability for shaft connection with larger crossing angle, low requirement on parallel alignment of the connected shaft, long service life and the like.

Description

A kind of ball coupling

The utility model relates to a kind of ball coupling.

(patent No.: the apparent surface that driving link 90215888.0) and driven member are used to connect is the cylndrical surface to existing ball coupling, and is gapped therebetween, and between diameter was embedded in greater than the ball in gap, the distribution circle of ball was positioned at interstitial area.The transmission of this ball coupling power is pushed and is sheared the ball sphere by rolling groove corresponding cylndrical surface on driving link and driven member and realizes, because of stressed periphery less than quarter turn, cause that bearing capacity is little, shock resistance is poor, occur the situation that was lost efficacy by conquassation in the rolling groove cylndrical surface easily, influence the working life of coupling; When coupled axle intersects, gap between driving link and the driven member increases on one side, another side reduces relatively, ball can not remain on the center of cylndrical surface, cause the radial location of ball in the cylndrical surface to be lost efficacy, effective bearing area further reduces, to having a negative impact in working life of coupling; Because ball can only axially roll in the cylndrical surface, can not radial rolling, thereby the parallel centering of coupled axle had relatively high expectations.

The purpose of this utility model is to provide that a kind of bearing capacity is big, shock resistance good, be suitable for bigger intersecting angle axle connects, the parallel centering of coupled axle is required ball coupling low, long service life.

The purpose of a kind of ball coupling of the utility model is achieved in that apparent surface that driving link and driven member be used to connect is concavo-convex staggered and leave the gap, ball is contained in the rolling groove of the side of jog opening, and the diameter of ball is greater than the gap between driving link and the driven member.

A kind of ball coupling of the utility model compared with prior art has the following advantages:

1, the transmission of power is directly pushed the ball sphere by rolling groove respective surfaces on driving link and driven member and is realized that effective bearing area increases, and bearing capacity and impact resistance are improved, long service life;

2, when coupled axle intersects, the centre of sphere of ball can remain on the point of intersection of working surface center line of rolling groove, and effective bearing area is constant, applicable to the connection of bigger intersecting angle axle, does not influence the working life of coupling;

3, ball can axially roll in rolling groove, again can radial rolling, thereby require low to the parallel centering of coupled axle.

Below in conjunction with accompanying drawing a kind of ball coupling of the utility model is done detailed description.

Fig. 1 is the plan view of a kind of ball coupling of the utility model, also is specification digest accompanying drawing of the present utility model.

Fig. 2 is the sectional view of a kind of ball coupling of the utility model, the sectional view when Fig. 3 is coupled intersection of a kind of ball coupling of the utility model.

1 is driving link among Fig. 1,2,3, and 2 is ball, and 3 is driven member.The apparent surface that driving link 1 and driven member 3 are used to connect is concavo-convex staggered and leave the gap, and ball 2 is contained in the rolling groove of the side of jog opening, and the diameter of ball 2 is greater than the gap between driving link 1 and the driven member 3.

As shown in Figure 1 and Figure 2, the working surface of the rolling groove of ball 2 on driving link 1 and driven member 3 and effective area of contact increase of ball 2, the bearing capacity and the impact resistance of every ball 2 all are improved, and can eliminate the additional pressure that produces because of the asymmetric distribution of working surface pressure.

As shown in Figure 3, when the coupled axle of driving link 1 and driven member 3 intersects, because the gap of driving link 1 and driven member 3 is positioned at the not zone of bearing load of ball 2, so strengthen the gap of driving link 1 and driven member 3, substantially can not weaken the bearing capacity of ball 2 and the working surface surface of contact of its rolling groove on driving link 1 and driven member 3, but under the constraint of work cylndrical surface, both sides, its centre of sphere remains on the point of intersection of two working surface center lines of rolling groove, continuation is worked under kilter, the moment of torsion that is transmitted is unaffected, therefore also just allows bigger axle intersecting angle.

As Fig. 1, Fig. 2, shown in Figure 3, pressure surface lengthening because of ball 2, and the symmetry plane of two pressure surfaces is near the coupling shaft axis, radical change has taken place in the surface contact condition, ball 2 not only can be in rolling groove along the axial rolling of coupling, also can radially roll, this has just reduced the parallel centering requirement of the coupled axle of driving link 1 and driven member 3, make ball coupling provided by the utility model not only can connect the axle that intersection misaligns easily and efficiently, also can connect the axle of parallel die misalignment.

Claims

1, a kind of ball coupling, form by driving link (1), ball (2) and driven member (3), it is characterized in that apparent surface that driving link (1) and driven member (3) be used to connect is concavo-convex staggered and leave the gap, ball (2) is contained in the rolling groove of the side of jog opening, and the diameter of ball (2) is greater than the gap between driving link (1) and the driven member (3).