CN101368621A - Flexible chain coupling - Google Patents
Flexible chain coupling Download PDFInfo
- Publication number
- CN101368621A CN101368621A CNA200810140003XA CN200810140003A CN101368621A CN 101368621 A CN101368621 A CN 101368621A CN A200810140003X A CNA200810140003X A CN A200810140003XA CN 200810140003 A CN200810140003 A CN 200810140003A CN 101368621 A CN101368621 A CN 101368621A
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- China
- Prior art keywords
- chain
- coupling
- wheels
- flexible
- half sprocket
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- Gears, Cams (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a flexible chain coupling which belongs to the chain coupling technical field. The flexible chain coupling comprises two half chain wheels and a chain; the two half chain wheels are connected together through the chain; the chain is meshed with the two half chain wheels at the same time; the wheel hubs of the two chain wheels are mounted with cover shells; the opposite end surfaces of the two half chain wheels are all inclined to one side relative to the axial line of the half chain wheels; the chain adopts a tooth-shaped chain. Because the end surfaces of the two half chain wheels are inclined to one side, the chain can be rotated in a certain angle periodically to enable the shear bearing part of the pin shaft to have transformation adjustment; the tension and stress applied on the chain are even; the deflection moment is prevented and the abrasion is even. Meanwhile, because the tooth-shaped chain is adopted, the bearing capacity is small; the noise is low and the vibration absorbing and damping effects are realized. The stressed part is far away from the rotary axial line so that loads are shared by more teeth in the meshing. The flexible chain coupling is concurrently provided with the advantages of the gear coupling and the roller chain coupling and improves the service life of the chain. The coupler has longer service life and more reliable operation.
Description
Technical field
The present invention relates to be used for the chain coupling that two semiaxis connect, belong to the chain coupling technical field.
Background technique
Coupling is to be used for a kind of very widely mechanical device of purposes of joining shaft and axle, also is used for joining shaft and other parts (gear and belt pulley etc.) sometimes, perhaps connects two other parts (gear and gear).The main effect of coupling is a transmitting torque.Some coupling can be used as safety installations, in order to shielding when machine transships.
Chain coupling is a kind of special rigid coupling, is to utilize public chain, and simultaneously identical with the number of teeth on two and half sprocket wheels sprocket engagement arranged side by side is to link up two semiaxis and transmitting torque and motion.The chain coupling main distinction of different structure type is to adopt different chains, and common have duplex chain coupling, simplex roller chain coupling, silent chain coupling, a nylon chain coupling etc.That chain coupling has is simple in structure, need not to move axially when compact dimensions, in light weight, dismounting, strong to adaptive capacity to environment, make easy, the low cost and other advantages of maintenance; Also have the ability of certain compensation parallel offset and certain bumper and absorbing shock performance, joined the additional load that the diaxon relativity shift causes to eliminate or to reduce, reduce vibration, the reduction of machine driven system and impact spike load,, prolong service life of a machine to improve transmission performance; Also have simultaneously the overload protective action concurrently.The diameter of axle scope that chain coupling is suitable for is wide.Be widely used in mechanical transmission such as engineering, mine, general and metallurgy.
Duplex chain coupling performance is better than the coupling of other structural types, is widely adopted.But owing to adopt roller chain, the bearing pin by chain comes transmitting torque, lacks enough flexibilities.Because chain is positioned at the outer rim of coupling, and is bigger at the centrifugal force of fast state lower chain, be unsuitable for the occasion of high speed rotating speed, also be unsuitable for the occasion of Fraquent start and under intense impact, work, can not transmit thrust load simultaneously.
Summary of the invention
The present invention is directed to the deficiency that existing chain coupling exists, provide that a kind of flexibility is big, bearing capacity strong, can improve chain working life, and then the flexible chain coupling that prolongs the working life of coupling.
Flexible chain coupling of the present invention adopts following technical solution:
This flexible chain coupling comprises two and half sprocket wheels and chain, two and half sprocket wheels link together by chain, chain while and two and half sprocket engagement, on two and half hub of chain wheel case is installed, the opposing end faces unanimity of two and half sprocket wheels with respect to the axis of half sprocket wheel to lopsidedness, chain strip adoption silent chain.
The opposing end faces unanimity of two and half sprocket wheels is less than or equal to 45 degree to the angle of lopsidedness greater than 0 degree with respect to the axis of half sprocket wheel.
Chain has 2～5 rows.
Above-mentioned flexible chain coupling is not to resemble to adopt the bearing pin of chain to come transmitting torque the existing common chain coupling, and mainly is to bear pulling force by chain length direction (vertically) to come transmitting torque.Therefore the flexibility of chain length direction can guarantee that coupling has flexibility preferably at circumferencial direction, increases absorbing buffering, shock resistance effect.Under the situation of transmitting identical torque, has littler radial dimension than existing common chain coupling.
Existing common chain coupling bearing pin bears inclined to one side square and shearing, and it is inhomogeneous to wear and tear.Chain bears longitudinal pulling force in the flexible chain coupling of the present invention, and stressed evenly do not have inclined to one side square, and wearing and tearing evenly are beneficial to and improve intensity and life-span.Simultaneously, being easy to chain design is weak link, plays the overload protective action.
The present invention has the advantage of existing common chain coupling, since two and half sprocket wheels relative end face as one man to the axis lopsidedness of half sprocket wheel, can regularly chain be turned over several angle, making being cut of chain hinge pin partly obtain conversion regulates, improve the working life of chain, prolonged the working life of coupling.Owing to adopt silent chain, bearing capacity is stronger simultaneously, and noise is little, and the absorbing buffer function is arranged.The force part is far away from spin axis, and the number of teeth that load is shared in engagement simultaneously is many.Compare with gear coupling, the contact of profile of tooth chain and sprocket is " face " contact, and gear is " line " contact with contacting of gear, and the contact stress of silent chain coupling is little, and contact fatigue strength is higher, intensity height, shock resistance.The contact points position of sprocket wheel is lower, and the power transmission position is near the outer rim of flexible chain coupling, and the gear teeth are frangibility not.
The present invention has the advantage of gear coupling and roller chain coupling concurrently, longer service life, and it is more reliable to work.
Description of drawings
Fig. 1 is the structural representation of flexible chain coupling of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of two halves sprocket wheel opposing end surface among the present invention.
Wherein: 1, upper encloser, 2, half sprocket wheel, 3, seal ring, 4, chain, 5, half sprocket wheel, 6, lower encioser, 7, screw.
Embodiment
As depicted in figs. 1 and 2, the same two and half sprocket wheels (i.e. half sprocket wheel 2 and half sprocket wheel 5) and chain 4, half sprocket wheels 2 and half sprocket wheel 5 of also comprising with existing chain coupling of flexible chain coupling of the present invention link together by chain 4.Chain 4 with many rows meshes with half sprocket wheel 2 and half sprocket wheel 5 simultaneously.Upper encloser 1 and lower encioser 6 also are installed on the wheel hub of half sprocket wheel 2 and half sprocket wheel 5, and upper encloser 1 and lower encioser 6 pass through screw 7 fastening (referring to Fig. 2), and realize sealing by seal ring 3.During application, half sprocket wheel 2 and half sprocket wheel 5 are installed in respectively on the diaxon to be connected.
Characteristics of the present invention are that the opposing end faces of half sprocket wheel 2 and half sprocket wheel 5 is not the axis normal with half sprocket wheel, the several angle but unanimity tilts to the left or to the right, as shown in Figure 3, the angle of inclination a of the relative axis of two and half sprocket wheel end faces is less than or equal to 45 degree greater than 0 degree, and the optimum tilt angle is 30 degree.Chain 4 of the present invention adopts silent chain, and its pitch is 19.05mm, and the number of teeth is 16, the material 40Cr of sprocket wheel, tooth face hardness HRC40～50.Chain has many rows, can select to adopt 2～5 rows according to requirement of strength usually.
What flexible chain coupling of the present invention adopted is silent chain, and the bearing capacity of silent chain is stronger, and noise is little.Chain bears pulling force and comes transmitting torque, and chain has certain elasticity, buffering and shock sucking function are arranged, so flexible chain coupling also has the absorbing buffer function.The flexible chain coupling reliable operation, the life-span is long.
Flexible chain coupling of the present invention has certain compensatory, less demanding to neutrality to installation precision, axle.The error compensation ability of flexible chain coupling both can be used to compensate alignment error, also can compensate the stressed distortion that causes.
Flexible chain coupling of the present invention is compared with other shaft couplings, the compact dimensions of flexible chain coupling, and weight is lighter, price Cheap. The flexible chain coupling force part from rotation away from, it is many that the number of teeth of load is shared in simultaneously engagement. With gear coupling Compare, the contact of profile of tooth chain and sprocket is " face " contact, and gear is " line " contact with contacting of gear, so, silent chain The contact stress of shaft coupling is little, and contact fatigue strength is higher. The meshing point position of sprocket wheel is lower, and the power transmission position is near the flexible chain connection The outer rim of axial organ, the gear teeth are frangibility not.
Claims (3)
1. flexible chain coupling, comprise two and half sprocket wheels and chain, two and half sprocket wheels link together by chain, chain while and two and half sprocket engagement, on two and half hub of chain wheel case is installed, it is characterized in that: the opposing end faces unanimity of two and half sprocket wheels with respect to the axis of half sprocket wheel to lopsidedness, chain strip adoption silent chain.
2. flexible chain coupling according to claim 1 is characterized in that: the opposing end faces unanimity of described two and half sprocket wheels is less than or equal to 45 degree to the angle of lopsidedness greater than 0 degree with respect to the axis of half sprocket wheel.
3. flexible chain coupling according to claim 1 is characterized in that: described chain has 2～5 rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810140003XA CN101368621A (en) | 2008-09-12 | 2008-09-12 | Flexible chain coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810140003XA CN101368621A (en) | 2008-09-12 | 2008-09-12 | Flexible chain coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101368621A true CN101368621A (en) | 2009-02-18 |
Family
ID=40412570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810140003XA Pending CN101368621A (en) | 2008-09-12 | 2008-09-12 | Flexible chain coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101368621A (en) |
-
2008
- 2008-09-12 CN CNA200810140003XA patent/CN101368621A/en active Pending
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090218 |