CN1007651B

CN1007651B - Balance type slide block shaft coupling

Info

Publication number: CN1007651B
Application number: CN 88100943
Authority: CN
Inventors: 蒋学全; 张帆; 徐晓俊
Original assignee: Shaanxi Polytechnic Institute
Current assignee: Shaanxi Polytechnic Institute
Priority date: 1988-02-24
Filing date: 1988-02-24
Publication date: 1990-04-18
Also published as: CN1035347A

Abstract

The present invention discloses a balanced slider shaft coupling for connecting shaft lines with large deflection and deflection angles, which is composed of two half shaft couplings, two slot-shaped sliders (or two pairs of separation sliders), spring, a barrel-shaped cover and a lubrication plug. An additional dynamic load generated from a moving member can reach dynamic balancing on the moving member itself or on the basis of the moving member in the process of transmission, the additional dynamic load and vibration of the system are not generated, and thus, the mechanical transmission is stable; the compensation capacity of the deflection and the deflection angle between the shaft lines of connection shafts can be enhanced, large loads are supported, and working speed is improved; the performance of a mechanical system is improved.

Description

Balance type slide block shaft coupling

The invention belongs to a kind of movable compensate coupling of the rigidity that radial deflection and drift angle are arranged between axis that connects, specifically a kind of oldham coupling in the mechanical transmission.

In prior art, the sliding cross coupling that machine driven system is used is made up of two half-couplings and slide block, is used to connect have two axles that certain radial deflection and between centers have the drift angle.Two orthogonal projections are arranged on the slide block, be nested in respectively in the groove of two half-couplings, when a half-coupling rotates, extruding by this half-coupling and a projection surface of contact of slide block drives slide block, the extruding of another projection of slide block and another half-coupling surface of contact and drive another half-coupling, reach the purpose of transmission, but in transmission process, because the mid point that is offset between the axis as center of rotation in the center of mass of slide block and the coupling transmission process does not overlap, the additional dynamic load that acts on slide block center of mass can't balance, seriously influenced the stationarity and the Applicable scope that has limited sliding cross coupling of transmission, can only on the small-sized pump below the 250rpm, use.

Russian Patent SU-566-036 discloses a kind of oldham coupling, and the Slipper of this oldham coupling is the sphere centre ring of a subsidiary bearing pin, but its working principle is identical with general known sliding cross coupling.Such slide block structure can compensate radial deflection bigger between the joining shaft axis and drift angle, compensation ability than general sliding cross coupling is strong, the caused centrifugal action of the on-stream off-centre of center ring but it is not considered, and the additional dynamic load and the vibration that produce therefrom, so its Applicable scope is narrower.

The object of the present invention is to provide a kind ofly has than the large compensation ability radial deflection between the coupling shaft axis and drift angle, the additional dynamic load that moving link is produced at the volley can be able to dynamic balancing or be able to dynamic balancing on the basis at member self, stable drive, bearing capacity is big, the balance type slide block shaft coupling that Applicable scope is wider.

Solution of the present invention is that the oldham coupling that is provided is made up of half-coupling and slide block.A slide block is nested in a pair of groove of two half-couplings simultaneously, and the groove direction of two half-couplings is vertical mutually, and slide block can be done relative movement in groove; Another slide block also be nested in two half-couplings simultaneously another in the groove, a pair of groove direction of this of two half-couplings is vertical mutually, slide block can be done relative movement in groove; Slide block and slide block are installed on orthogonal position, can do relative movement between the slide block.Cylindrical cover and lubricated plug are housed on coupling, and all moving links of coupling all place in the cylindrical cover.When a half-coupling rotates, by with the compressive zone movable slider of slide block surface of contact, extruding by slide block and another half-coupling surface of contact drives another half-coupling, thereby realize the purpose of transmission, the lubricated of coupling is the splash lubrication that forms in cylindrical cover when rotated by means of all moving links.

Slide block of the present invention can be the flute profile slide block that two sides are the plane.

Slide block of the present invention can be that two sides of pointing to a half-coupling are the flute profile slide block of arc.

Slide block of the present invention can be the slide block of two pairs of separation.

Can connect with spring (can be helical spring, can be the sheet spring, also can be rubber spring) between said two the flute profile slide blocks of the present invention.

The rigidity of the said spring of the present invention can with square being directly proportional of coupling operating angle speed.

Compare with sliding cross coupling.The additional dynamic load that slide block of the present invention is produced at the volley can reach self dynamic balancing or reach dynamic balancing on the basis, can not cause the additional dynamic load and the vibration of system, thereby can make stable drive.Can improve working speed and expansion compensation ability to skew and drift angle between the coupling shaft axis.And having kept the rigid coupling bearing capacity big, the advantage that the life-span is long has lubricated convenient or non-lubricating characteristics, and is suitable with it on manufacture cost.The present invention is not only applicable to important events such as high speed, heavy duty, also can be used for using at present the occasion of gear coupling, sliding cross coupling or elastic coupling flexible coupling, can improve the performance of mechanical system.

Fig. 1 and Fig. 2 are first embodiment's sectional views.

Fig. 3 and Fig. 4 are second embodiment's sectional views.

Fig. 5 and Fig. 6 are the 3rd embodiment's sectional views.

Among the above figure, 1-half-coupling, 2-slide block, 3-spring, 4-slide block, 5-half-coupling, 6-cylindrical cover, the lubricated plug of 7-.

Embodiment 1:

Fig. 1 and Fig. 2 have described the flute profile slide block 2 and 4 that is the plane by half-coupling 1 and 5 two sides, spring 3(rubber spring) and cylindrical cover 6 and lubricated plug 7 balance type slide block shaft couplings that constituted.Slide block 2 is nested in the groove of the half-coupling 1 with boss, is nested in again in the groove of the half-coupling 5 with boss simultaneously, and the groove direction of two half-couplings is vertical mutually, and slide block 2 and groove can be done relative movement.Slide block 4 is nested in another groove of the half-coupling 1 with boss, be nested in simultaneously on the half-coupling 5 with boss again and groove that groove of half-coupling 1 is perpendicular in, slide block 4 and groove can be done relative movement.Slide block 2 and slide block 4 are installed on orthogonal position, and can do relative movement.When half-coupling 1 and 5 rotates, drive slide block by extruding with slide block 2 and 4 surface of contact, slide block 2 and 4 drives half-coupling 5 or 1 by the extruding of surface of contact again, thereby realize the transmission purpose, because slide block 2 and slide block 4 mutual vertical installations, and can do relative movement, the mid point that is offset between all the time with axis of center of mass of two slide blocks is that symmetry center is symmetrical in when motion, the power that the additional dynamic load that acts on two slide block center of mass during rotation is two equal and opposite in directions, direction is opposite, thereby can on the basis, be able to dynamic balancing.Couple together with spring between slide block 2 and 4, then these two additional dynamic loads are able to dynamic balancing on spring.Therefore can not cause the vibration of system, make the transmission balance, and can enlarge compensation ability skew and drift angle between axis.

Embodiment two:

Fig. 3 and Fig. 4 have described and have separated slide block 2 that slide block forms with 5, two by half-coupling 1 and separate the balance type slide block shaft coupling that slide block 4 that slide block forms and cylindrical cover 6 are formed with two.Two of slide block 2 separate slide blocks and are nested in simultaneously in orthogonal two grooves between half-coupling 1 and half-coupling 5 boss, and slide block 2 and groove can be done relative movement.In orthogonal two grooves that two of slide block 4 separate between another boss that slide blocks also are nested in half-coupling 1 and half-coupling 5 simultaneously, slide block 4 and groove can be done relative movement.When half-coupling 1 or 5 rotates, drive slide block by extruding with slide block 2 and 4 surface of contact, slide block 2 and 4 drives half-coupling 5 or 1 by the extruding of surface of contact again, thereby realizes the purpose of transmission.Because the mid point that the center of mass of slide block 2 and slide block 4 is offset between all the time with axis when rotating is that symmetry center is symmetrical, Gu and the additional dynamic load that acts on two slide block center of mass when rotating is two power of opposite sign but equal magnitude, can on the basis, reach dynamic balancing, thereby can not cause that the vibration of system improves the performance of mechanical system.

Embodiment three:

Fig. 5 and Fig. 6 have described by half-coupling 1 and 5, two sides of pointing to half-coupling 1 are the flute profile slide block 2 and 4 of arc, spring 3(helical spring) and cylindrical cover 6 and lubricated plug 7 balance type slide block shaft couplings of being formed, slide block 2 is nested in the groove of the half-coupling 1 with boss, be nested in again in the groove of half-coupling 5 simultaneously with boss, the groove direction of two half-couplings is vertical mutually, and slide block 2 and groove can be done relative movement.Slide block 4 is nested in another groove of the half-coupling 1 with boss, be nested in simultaneously on the half-coupling 5 with boss again and groove that groove of half-coupling 1 is perpendicular in, slide block 4 and groove can be done relative movement.Slide block 2 and slide block 4 are installed on orthogonal position, and can do relative movement.When half-coupling 1 or 5 rotates, drive slip by the extruding with slide block 2 and 4 surface of contact, slide block 2 and 4 drives half-coupling 5 or 1 by the extruding of surface of contact again, thereby realizes the purpose of transmission.Because slide block 2 and slide block 4 mutual vertical installations, and can do relative movement.The mid point that is offset between all the time with axis of center of mass of two slide blocks is that symmetry center is symmetrical in when motion, the additional dynamic load that acts on two slide block center of mass during rotation is two equal and opposite in directions, the power that direction is opposite thereby can be able to dynamic balancing on the basis.Couple together with spring between slide block 2 and slide block 4, then these two additional dynamic loads are able to dynamic balancing on spring, therefore can not cause the vibration of system, make stable drive.Because the side that slide block 2 and slide block 4 point to half-coupling 1 is an arc, thereby the balance type slide block shaft coupling of this form is effective especially to the compensation ability of drift angle between axis for enlarging.

Claims

1, a kind of be used to connect between axis formed by ladder axle and slide block by the oldham coupling of radial deflection and drift angle, it is characterized in that slide block 2 is nested in a pair of groove on half-coupling 1 and the half-coupling 5 simultaneously, the groove direction of half-coupling 1 and half-coupling 5 is vertical mutually, slide block 2 and groove can be done relative movement, slide block 4 also is nested on half-coupling 1 and the half-coupling 5 another simultaneously in the groove, this a pair of groove direction of half-coupling 1 and half-coupling 5 is vertical mutually, slide block 4 and groove can be done relative movement, slide block 2 and slide block 4 are installed on orthogonal position, and can do relative movement, cylindrical cover 6 and lubricated plug 7 are housed on coupling, and all moving links of coupling all place in the cylindrical cover 6.

2, oldham coupling as claimed in claim 1 is characterized in that said slide block 2 and slide block 4 are flute profile slide blocks that two sides are the plane.

3, oldham coupling as claimed in claim 1 is characterized in that said slide block 2 and slide block 4 are that two sides of pointing to half-coupling 1 are the flute profile slide block of arc.

4, oldham coupling as claimed in claim 1 is characterized in that said slide block 2 and slide block 4 respectively are made up of the slide block of pair of separated.

5,, be characterised in that between said slide block 2 and the slide block 4 to connect with spring 3 as claim 2 or 3 described oldham couplings.

6, oldham coupling as claimed in claim 5 is characterized in that square being directly proportional of said spring 3 its rigidity and coupling operating angle speed.