CN106895087A

CN106895087A - A kind of roller for shaft coupling roller chain

Info

Publication number: CN106895087A
Application number: CN201510960203.XA
Authority: CN
Inventors: 周湘衡; 王宽伟
Original assignee: SINOSTEEL HENGYANG MACHINERY CO Ltd
Current assignee: SINOSTEEL HENGYANG MACHINERY CO Ltd
Priority date: 2015-12-19
Filing date: 2015-12-19
Publication date: 2017-06-27

Abstract

The present invention relates to be used for a kind of roller of shaft coupling roller chain, the roller bus of this roller chain is cydariform curve, the adverse effect of edge effect is reduced as a result of cydariform curve, improve the distribution of contact of Contact Pair, to ensure the uniformity of contact stress stress and further reducing edge effect, appropriate selection cydariform curve and cydariform amount, further to reduce contact stress peak value, make distribution of contact more reasonable so that roller stress tends to uniform, so as to improve the service life and nominal torque of roller chain coupling, improve the reliability and stability of roller chain coupling.Due to roller chain roller and half a coupler sprocket engagement when the contact stress peak value that produces reduce, be not susceptible to spot corrosion, abrasion, improve service life and nominal torque；Simultaneously because the reduction of peak value of contact forces, sprocket faces there will not be larger rolling friction, and transmission efficiency is also improved；And shock loading is slow down, vibration is reduced and is improved the stationarity of work.

Description

A kind of roller for shaft coupling roller chain

Technical field

The present invention relates to a kind of roller for shaft coupling roller chain, it is mainly used in the rolling in roller chain coupling Subchain.

Background technology

Roller chain coupling be using public roller chain simultaneously with two identical sprocket engagements arranged side by side, with Realize two connections of half a coupler；And be dress for the torque produced by prime mover to be passed to driven machine Put；And with simple structure, be convenient to mount and dismount, compact conformation, have certain compensation ability, reliable operation, The advantages of cost is relatively low, but vibration reduction and cushioning is unable to, therefore be not suitable for having the shafting of shock and vibration to be driven, it is Belong to one kind of Inelastic element flexible shaft coupling.Quality in its running, is directly connected to roller chain The bearing capacity and service life and reliability of shaft coupling work.The roller outer surface of the roller chain of current structure It is the face of cylinder, its bus is straight line, and when big torque is transmitted, roller two ends can produce obvious edge effect, There is larger peak stress, cause roller discontinuity, be further exacerbated by roller and half a coupler chain The abrasion of wheel, so as to influence the stable working and service life and nominal torque of roller chain coupling, causes The allowable rotating speed of whole roller chain coupling and nominal torque reduction.

The content of the invention

Worn and torn less it is an object of the invention to provide one kind, nominal torque is higher, transmission is relatively smoothly used for roller The roller of roller chain in chain coupling.

The technical scheme is that：A kind of roller for roller chain in roller chain coupling, the roller The curve of outer surface bus is to be close to the central raised cydariform curve of bus, and the roller bus is one section or many Section cydariform curve, therefore the adverse effect of edge effect is reduced, improve the distribution of contact of Contact Pair, reach To two ends peak stress is reduced, the stress distribution of roller can be effectively improved and whole roller chain coupling is improved Service life.To ensure the uniformity of distribution of contact and further reducing edge effect, the cydariform is bent Line has certain cydariform amount.Using appropriate cydariform curve and the design of cydariform amount so that roller stress Tend to uniform, to reduce the EDGE CONTACT stress of roller so that distribution of contact is more reasonable, improves The stress distribution of the Contact Pair of roller chain coupling, and then improve service life and the carrying of roller chain coupling Ability, so as to improve functional reliability and stability.

Further technical scheme is the present invention：The cydariform curve of the roller bus can be optionally one of following, The Wave curved of logarithmic curve, circular curve, sine curve, elliptic curve and multi-section circular arc curve composition.

Further technical scheme of the invention is：The roller bus cydariform curve is using logarithmic curve as drum Shape curve, the improvement to edge stress effect is the most obvious, and the cydariform curve of the roller bus is preferably right Number curve.

Further technical scheme is the present invention again：The cydariform amount of the logarithmic curve of the roller bus, both Ensure cydariform effect, avoid excessive cydariform amount to reduce contact area on the contrary again, make localized contact stress Raise, hollow roller is taken into account again the flexibility of certain elastic deformation and rotation, and the cydariform amount takes Value scope is between 0.005~0.025mm.

The beneficial effects of the invention are as follows：Using this roller bus central raised cydariform curve and appropriate drum The technical scheme of shape amount, to reduce the EDGE CONTACT peak stress of roller, and causes that roller stress tends to uniform. The contact stress peak value produced when the roller of roller chain is with half a coupler sprocket engagement is smaller, is not susceptible to a little Erosion, abrasion, improve service life and bearing capacity；Simultaneously because the reduction of contact force, half a coupler chain The wheel flank of tooth there will not be larger sliding friction, and transmission efficiency is also improved；In addition, the art people Member is known, because active and passive half a coupler sprocket wheel has an angle phase for relatively lagging behind small in operation process Potential difference, roller has a small deflection angle in motion process, so to roller and half a coupler sprocket wheel two End produces impact and weares and teares, and due to the technical scheme using this roller bus intermediate projections cydariform curve, subtracts The abrasion of the shock loading sum at roller and half a coupler sprocket wheel two ends is delayed, has reduced vibration and noise, improved The stationarity of work.Roller bus can avoid material from assembling using cydariform curve, accelerate material and comparatively fast leave tooth Face, can further reduce abrasive wear of the dust and other impurities to sprocket wheel and chain.In a word, this optimization roller The roller of chain is adapted to larger allowable rotating speed and nominal torque, and service life is more long, and transmission is relatively steady and connects Contacting surface abrasion is normal and reduces maintenance.

Brief description of the drawings

Fig. 1 is the mesh schematic representation of roller chain coupling

Fig. 2 is prior art roller generalized section

Fig. 3 is present pre-ferred embodiments roller section (curve is exaggerated) schematic diagram

Specific embodiment

Roller chain coupling as shown in Figure 1, is made up of half a coupler sprocket wheel 1 and roller chain 2, and half joins The flank profil 3 of axle device sprocket wheel 1 is engaged with the outer round surface of the roller 4 of roller chain.

As shown in figure 3, the basis of the roller face of cylinder straight edge line 5 in the roller chain of prior art shown in Fig. 2 On, the roller straight edge line 5 of roller chain is optimized for be close to the central raised cydariform curve of bus, the roller Bus 5 is one or more snippets cydariform curve, therefore reduces the adverse effect of edge effect, improves Contact Pair Distribution of contact, reaches reduction two ends peak stress, can be effectively improved the stress distribution of roller.To ensure The uniformity of distribution of contact and further reduction edge effect, the cydariform curve should select appropriate drum Shape amount δ 6.

Further technical scheme is：The cydariform curve of the roller bus 5 can be optionally one of following, logarithm The wave smooth curve of curve, circular curve, sine curve, elliptic curve and multi-section circular arc curve composition.

Further technical scheme is：The cydariform curve of the roller bus 5 is preferably logarithmic curve.

Further technical scheme is again：The cydariform amount δ's 6 of the logarithmic curve of the roller bus 5 takes Value scope is between 0.005~0.025mm.

Above-described embodiment is used for illustrative purposes only, and not limitation of the present invention, as long as chain with During sprocket engagement, the roller bus of chain is cydariform curve, no matter and hoisting-chain, haulage chain and driving-chain, And the chain of the different purposes such as single, double row roller chain, can fall within the scope of the present application.

Claims

1. a kind of roller for shaft coupling roller chain, the roller outer surface of the roller chain is the face of cylinder, described The roller bus (5) of roller chain is straight line；It is characterized in that the roller bus (5) is to be close in bus One or more snippets raised cydariform curve of portion.

2. a kind of roller for shaft coupling roller chain according to claim 1, it is characterised in that the rolling The cydariform curve of primary and secondary line (5) can be optionally one of following, logarithmic curve, circular curve, sine curve, The Wave curved of elliptic curve and multi-section circular arc curve composition.

3. a kind of roller for shaft coupling roller chain according to claim 2, it is characterised in that the rolling The cydariform curve of primary and secondary line (5) is logarithmic curve.

4. a kind of roller for shaft coupling roller chain according to claim 3, it is characterised in that the rolling The span of cydariform amount δ (6) of the logarithmic curve of primary and secondary line (5) is between 0.005~0.025mm.