CN1594903A - Chain type mobile coupling - Google Patents
Chain type mobile coupling Download PDFInfo
- Publication number
- CN1594903A CN1594903A CNA2004100134642A CN200410013464A CN1594903A CN 1594903 A CN1594903 A CN 1594903A CN A2004100134642 A CNA2004100134642 A CN A2004100134642A CN 200410013464 A CN200410013464 A CN 200410013464A CN 1594903 A CN1594903 A CN 1594903A
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- China
- Prior art keywords
- chain
- sprocket
- sprocket wheels
- type coupling
- chain type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/54—Couplings comprising a chain or strip surrounding two wheels arranged side by side and provided with teeth or the equivalent
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
This invention discloses a mobile catenulate bearing connection that transfers turn between two parts connected. It includes two opposite chain wheels which respectively connect with the two parts, and a round chain which matches with the sprocket of the wheel. This chain is composed of multi-links that recur to the cylindrical pin, each link has at least two catenulate boards, the tow end of the pin are inserted on the two boards. Each board of the links is connected with the chain wheels' dentate top. The pin is embedded in the flute between the two chain gears and matches with the two diagonal gears. This bearing connection is suitable for the gearing that requires compact structure, has changeable load and demands to compensate relatively big positional errors.
Description
Technical field
The present invention relates to coupling used in the mechanical transmission, refer to a kind of chain type coupling particularly.
Background technique
At present, be used for connecting two transmission shafts or other two coupled, mainly between two transmission shafts or other two coupled transmit rotation and moment of torsion, and can compensate the chain coupling of positional error between described two transmission shafts or other two coupled, all directly use sleeve-barrel roollr chain and corresponding sprocket wheel in the chain-driven unit.The chain coupling of this spline structure include two separately respectively with a certain coupled the continuous sprocket wheel that has the identical number of teeth, with an end to end sleeve-barrel roollr chain that the corresponding sprocket of described two sprocket wheels is coupled together to correspondence, each chain link of wherein said chain is made up of at least two carrier bars, and links to each other with the carrier bar of adjacent link by means of the straight pin that is with sleeve and roller.For the coupling of other type, the advantage of the chain coupling of this sleeve roller minor is that mainly each chain link of each sprocket of its sprocket wheel and chain is all stressed evenly, it has characteristics such as overall structure is simple, in light weight, cost is low, easy to assembly simultaneously, but still there is following several bigger defective in it:
One, the structural type of existing chain coupling middle sleeve roller chain is unfavorable for the transmission of load.The carrier bar of bush roller chain should bear pulling force, if just but scrutinize the structural type of bush roller chain and its mode of transfer force can be found, its carrier bar tension not when work.Because self does not connect between the carrier bar of each chain link, but link to each other by means of straight pin, and form a frame structure with straight pin, the a pair of shearing that lays respectively at driving limit and driven limit by straight pin imports into just have to offset by means of moment of flexure and the shearing in the said frame inside configuration.Thereby the carrier bar of bush roller chain is not a tension when having the chain coupling transmitting torque now, but is bent on the very weak plane of its resistance to flexure.
Its two, the structural type of existing chain coupling middle sprocket also is unfavorable for the transmission of load.The load of coupling transmission mainly is moment of torsion, but the meshing part of sleeve-barrel roollr chain and sprocket is respectively roller and sprocket gabarit, if do not consider the gap, then its engagement position is in the minimum point of roller and sprocket gabarit, be on the root circle of sprocket wheel, its normal theoretically at all can not transmitting torque by the sprocket wheel axle center.Even considered the gap, its engagement position also only near above-mentioned minimum point, is unfavorable for transmitting torque equally very much.
Its three, chain is stressed in the existing chain coupling can be elongated when excessive, adds that mechanical wear also can increase the gap between roller and sleeve and sleeve and the straight pin naturally.Like this; under action of centrifugal force; above-mentioned engagement position can move up along the minimum point of sprocket gabarit; though help transmitting torque; but this can not guarantee the size that moment of torsion transmits; increase above-mentioned gap simultaneously and also can further increase the impact characteristics of load, particularly playing, braking workplace frequent or that often commutate.
In summary, because there is above-mentioned deficiency in existing chain coupling, so it only can be used for transmitting little moment of torsion and load transmission device stably, its application area has been subjected to very big restriction.
Summary of the invention
The objective of the invention is to provide a kind of and can be applied to the structural requirement compactness, transmitting torque is big, load change is big and change among the frequent transmission device, and chain type coupling that can the big positional error of compensate for slower.
For achieving the above object, the chain type coupling that the present invention is designed comprises two positioned opposite and sprocket wheel and the ring-like chain of sprocket to connecting one to one with described two sprocket wheels of linking to each other with one of two coupled parts respectively.Described ring-like chain is made of a plurality of chain links that are formed by connecting in twos by means of straight pin, two carrier bars about described every single chain link has at least, and intert on two carrier bars about described chain link at the two ends of described straight pin.The part that each sheet carrier bar of described every single chain link is positioned at the top circle top of described two sprocket wheels is connected as a single entity, described straight pin be embedded in two adjacent sprockets between the depression breach in, and look torque direction and be two sprockets that diagonal distributes with two adjacent sprocket centerings respectively and be meshed.Earlier ring-like chain is separated from beginning to end during assembling, its opening surface is contained in the sprocket of above-mentioned corresponding two sprocket wheels to last, and make above-mentioned straight pin be embedded into adjacent two sprockets between the depression indentation, there, again with the joining end to end of above-mentioned ring-like chain, but just formed the chain type coupling that helps the big positional error of transmitting torque compensate for slower on the structure construction.
Further, the top that each sheet carrier bar of described every single chain link is positioned at the top circle top of described two sprocket wheels organically is connected as a single entity, its cross section be the sprocket that covers on two sprocket wheels on plano-concave flute profile or other similar groove shaped structures, be similar to the channel-section steel section bar, to improve the situation of the suffered bending moment of each sheet carrier bar to greatest extent.
Further, the line of contact between the sprocket of described two sprocket wheels pair and the described straight pin should design near the standard pitch circle of two sprocket wheels, preferably overlap with its standard pitch circle, with strengthen straight pin and sprocket between the arm of force of engaging force, transmitting torque to greatest extent.
Further, at least be provided with corresponding hole, a pair of position on the end face of described two sprocket wheels, be provided with shape and its corresponding elastic element in the described hole, described two sprocket wheels are connected as a single entity, the impulsive load that whereby can buffer transmission rises, brakes or cause when commutating.In the transmission device of unidirectional delivery moment of torsion, on the described two sprocket wheel end faces each is to being provided with 0.5～5 ° positional deviation between the hole, can realize pretension to augular offset between the hole and described elastic element to coupling by means of on the two sprocket wheel end faces each, eliminate drive gap, better the buffer transmission impulsive load that rises, cause when braking.
The present invention is under the situation that has kept the existing advantage of conventional chains coupling, the characteristics that also have following several respects: one, because the carrier bar of each chain link of ring-like chain is connected as a single entity, the a pair of shearing that imports into by straight pin, lay respectively at driving limit and driven limit just can directly transmit by means of the shearing form in chain link inside, and needn't on the very weak chain board plane of its resistance to flexure, be bent, the force-bearing situation of whole chain is greatly improved.They are two years old, since the sprocket that straight pin is embedded in two sprocket wheels between, line of contact when having guaranteed the coupling running between sprocket pair and the straight pin always is positioned near the pitch circle standard pitch circle of two sprocket wheels, strengthened therebetween interaction force to the arm of force of axis of rotation, help transmitting torque, thereby also improved the force-bearing situation between sprocket wheel and the ring-like chain.Its three, chain type coupling of the present invention originally belongs to the rigidity coupling, add between two sprocket wheels load onto elastic element after, make it possess the shock-absorbing capacity of elasticity coupling again.Eliminating the inner drive gap stage of coupling, promptly its rise, the deboost phase, the impulsive load that it can buffer transmission rises, brakes or commutate and cause.In a single day and eliminated the inner drive gap of coupling, promptly in its normal work stage, it can recover to possess all characteristics of rigidity coupling again.Thereby the present invention is adapted to the structural requirement compactness especially, transmitting torque is big, load change is big and change among the frequent transmission device, and can compensate bigger positional error between coupled in twos.
Description of drawings
Fig. 1 is a kind of radially sectional structure schematic representation of chain type coupling, i.e. the A-A sectional structure schematic representation of Fig. 2;
Fig. 2 is the axial sectional structure schematic representation of above-mentioned chain type coupling, i.e. the B-B sectional structure schematic representation of Fig. 1;
Fig. 3 is the structure for amplifying schematic representation of the sprocket gabarit and the straight pin engagement situation of Fig. 1 middle sprocket;
Fig. 4 is the X place structure for amplifying schematic representation among Fig. 1;
Fig. 5 is the Y place structure for amplifying schematic representation among Fig. 1;
Fig. 6 is the ring-like chain assembling condition schematic representation among Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments chain type coupling of the present invention is described in further detail:
Chain type coupling shown in the figure is used for connecting two transmission shafts 1,1 ', and transmits between two transmission shafts 1,1 ' and rotate and moment of torsion, can compensate the positional error between two transmission shafts 1,1 '.This chain type coupling by two separately by means of bolt or other Placement (for example interference fit, key cooperation etc.) respectively with described two transmission shafts 1, the 1 ' sprocket wheel that has the identical number of teeth 2,2 ' that links to each other, and one with described two sprocket wheels 2,2 ' sprocket to 5,5 ', 6,6 ' the ring-like chain that connects one to one 3 constitutes.
Described ring-like chain 3 is made of inner link 8 and outer links 9 alternately, that be formed by connecting in twos by means of straight pin 7 similar number, a plurality of, and its chain link sum, straight pin number equate with the sprocket number average of each sprocket wheel.
Two carrier bars about described every single inner link 8 and outer link 9 have, the two ends of described straight pin 7 intert on two carrier bars about described inner link 8 and outer link 9, and its two ends are fixing by set circlip 12.Circlip 12 can bear corresponding axial force, so that the difference between two reverse supporting forces that compensation is imported into by two adjacent chain links respectively.
The top that the left and right sides carrier bar of described every single inner link 8 and outer link 9 is positioned at described two sprocket wheels 2,2 ' top circle top is connected as a single entity, its cross section is and covers on two sprocket wheels 2,2 ' sprocket to 5,5 ', 6, the groove shaped on 6 ' is similar to the structure of channel-section steel section bar.Self each several part of inner link 8 and outer link 9 organically is combined into a framework that is highly resistant to torque load like this, can utilize the shearing form it the driving limit and driven limit between power transmission, thereby improve the force-bearing situation of whole ring-like chain 3.
Described straight pin 7 is embedded in two adjacent sprockets to 5,5 ', 6, in the depression breach 10 between 6 ', and look torque direction respectively with two adjacent sprockets to 5,5 ', 6, be two sprockets that diagonal distributes 5 in 6 ', 6 ' or two sprocket 6,5 ' is meshed, its line of contact should design near two sprocket wheels 2,2 ' standard pitch circle 11, and preferred design is on standard pitch circle 11.Like this, can strengthen straight pin 7 and sprocket to 5,5 ', the arm of force of engaging force, transmitting torque effectively between 6,6 '.Particularly, two sprocket wheels 2,2 ' can be designed to following form perpendicular to the sprocket gabarit on the arbitrary section of its axis: with reference to shown in Figure 3, be that one section radius is r in the bottom of above-mentioned depression breach 10
1, home position is the circular arc of h, in the top of above-mentioned depression breach 10 the right and left symmetry, respectively has two sections radiuses to be respectively r
2And r
3Circular arc, constitute the sprocket gabarit by above-mentioned each section circular arc and one section circular arc or one section straight line of being positioned on sprocket wheel 2, the 2 ' top circle.In the present embodiment: r
1=0.46d
0, r
2=0.70d
0, r3=0.61d
0, h=0.09d
0, d
0Be the diameter of straight pin 7, p is sprocket wheel 2,2 ' pitch among Fig. 3.Above-mentioned each section radius of arc of choose reasonable and the ratio of straight pin 7 diameters and the position in each center of circle just can make straight pin 7 and sprocket to 5,5 ', and the line of contact between 6,6 ' is positioned near sprocket wheel 2,2 ' the standard pitch circle 11 or on standard pitch circle 11.
Also be provided with the corresponding polygonal hole 13,13 ' in a pair of position on described two sprocket wheels 2,2 ' the end face, be provided with the shape multiedge cylinder elastic element 14 corresponding in the described polygonal hole 13,13 ', described two sprocket wheels 2,2 ' flexibly are connected as a single entity with it.Like this, can cushion because the inevitable impulsive load that causes in starting, braking or when commutating of drive gap in a small amount between each chain link 8,9 inside of ring-like chain 3 and ring-like chain 3 and the sprocket wheel 2,2 '.
As previously mentioned, in the transmission device of unidirectional delivery moment of torsion, can be provided with 0.5～5 ° positional deviation between the polygonal hole on described two sprocket wheels 2, the 2 ' end face 13,13 '.Like this, can be by means of two sprocket wheels 2,2, augular offset and described multiedge cylinder elastic element 14 between the polygonal hole on the end face 13,13 ' are realized pretension to coupling, eliminate above-mentioned drive gap, thus the impulsive load that causes when reducing start-up in gear, braking or commutation better.
Be reserved with gap 15 between described two sprocket wheels 2,2 ' the end face, described two sprocket wheels 2,2 ' sprocket be to 5,5 ', 6,6 ' and the internal surface of interior outer link 8,9 between be reserved with gap 4,4 '.Like this, can compensate positional error between two transmission shafts 1,1 ' to greatest extent.
The working principle of chain type coupling of the present invention is such: pass to driving torque that coupling drives the limit and overcome by working machine and pass to resisting moment on the driven limit of coupling, and by coupling the rotating speed of needs is passed to driven limit.Moment specifically describes as follows in the transmission of coupling inside: driving moment drives the transmission shaft and the sprocket wheel on limit by coupling, evenly passes to each straight pin by each sprocket of this sprocket wheel, and further passes on each sprocket and driven shaft on the driven sprocket.Each straight pin is supported by the carrier bar on the chain at its two ends, and will pass to them by a pair of power that above-mentioned sprocket transmits.Because the carrier bar self of each chain link is connected as a single entity, the above-mentioned a pair of power of importing chain link into by straight pin just can utilize the right form of shearing to pass to the carrier bar of its another side by chain link carrier bar on one side and cancel each other voluntarily.
Above-mentioned shearing also can cause the supporting force of pair of parallel in the straight pin axis respectively to the respective torque that causes on the surface of contact of adjacent two chain links.Because the head and the tail of chain link, this a pair of supporting force also can be cancelled each other after each one week of chain link transmission of chain.The above-mentioned a pair of power of importing chain link into by straight pin also has the function of tension chain, has guaranteed the even power transmission of each chain link and each sprocket.According to the processing mode difference to inner drive gap, this chain type coupling both can be made into rigidity and had passed the square formula, also can be made into to be when transmission device rises, brakes or commutates that elasticity passes the square formula and to be the coupling that rigidity passes the square formula during in proper functioning.
By means of preset clearance and the assemblage gap between sprocket wheel and chain between the chain link internal surface of the sprocket of the preset clearance between two sprocket wheels, sprocket wheel and chain, this chain type coupling can between two transmission shafts axially, radially and the positional error of angle compensate with the form of rigidity or the form of substantially rigid.
Claims (10)
1. one kind at two coupled parts (1,1 ') transmit the chain type coupling of rotation and moment of torsion between, comprise two positioned opposite and respectively with described two coupled parts (1,1 ') sprocket wheel (2 that links to each other one of, 2 ') and one with described two sprocket wheels (2,2 ') sprocket is to (5,5 ', 6,6 ') the ring-like chain (3) that connects one to one, described ring-like chain (3) is by a plurality of chain links (8 that are formed by connecting in twos by means of straight pin (7), 9) constitute, described every single chain link (8,9) have at least about two carrier bars, intert at described chain link (8 at the two ends of described straight pin (7), 9) about on two carrier bars, it is characterized in that: described every single chain link (8,9) each sheet carrier bar is positioned at described two sprocket wheels (2, the part of top circle top 2 ') is connected as a single entity, described straight pin (7) is embedded in two adjacent sprockets to (5,5 ', 6,6 ') in the depression breach (10) between, and look torque direction respectively with two adjacent sprockets to (5,5 ', 6,6 ') be two sprockets (5 that diagonal distributes in, 6 ', 6,5 ') be meshed.
2. chain type coupling according to claim 1, it is characterized in that: the top that each sheet carrier bar of described every single chain link (8,9) is positioned at the top circle top of described two sprocket wheels (2,2 ') is connected as a single entity, its cross section be cover on two sprocket wheels (2,2 ') sprocket to the groove shaped on (5,5 ', 6,6 ').
3. chain type coupling according to claim 1 and 2, it is characterized in that: the sprocket of described two sprocket wheels (2,2 ') is positioned near the two sprocket wheels standard pitch circle of (2,2 ') (11) the line of contact between (5,5 ', 6,6 ') and the described straight pin (7).
4. chain type coupling according to claim 3 is characterized in that: the sprocket of described two sprocket wheels (2,2 ') is positioned on the two sprocket wheels standard pitch circle of (2,2 ') (11) the line of contact between (5,5 ', 6,6 ') and the described straight pin (7).
5. chain type coupling according to claim 1 and 2 is characterized in that: the two ends that described straight pin (7) interts on two carrier bars about described chain link (8,9) are provided with circlip (12).
6. chain type coupling according to claim 1 and 2, it is characterized in that: be provided with corresponding hole, a pair of position (13,13 ') on the end face of described two sprocket wheels (2,2 ') at least, described hole is provided with shape and its corresponding elastic element (14) in (13,13 '), described two sprocket wheels (2,2 ') are connected as a single entity.
7. chain type coupling according to claim 6 is characterized in that: each on described two sprocket wheels (2, the 2 ') end face is to being provided with 0.5～5 ° positional deviation between the hole (13,13 ').
8. chain type coupling according to claim 7, it is characterized in that: the end face of described two sprocket wheels (2,2 ') is provided with the corresponding polygonal hole in a pair of position (13,13 '), described polygonal hole is provided with the shape multiedge cylinder elastic element (14) corresponding with it in (13,13 '), described two sprocket wheels (2,2 ') are connected as a single entity.
9. chain type coupling according to claim 1 and 2 is characterized in that: be reserved with gap (15) between the end face of described two sprocket wheels (2,2 ').
10. chain type coupling according to claim 1 and 2 is characterized in that: be reserved with gap (4,4 ') between the internal surface of the sprocket of described two sprocket wheels (2,2 ') to (5,5 ', 6,6 ') and chain link (8,9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100134642A CN1291170C (en) | 2004-07-15 | 2004-07-15 | Chain type mobile coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100134642A CN1291170C (en) | 2004-07-15 | 2004-07-15 | Chain type mobile coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594903A true CN1594903A (en) | 2005-03-16 |
| CN1291170C CN1291170C (en) | 2006-12-20 |
Family
ID=34662998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100134642A Expired - Fee Related CN1291170C (en) | 2004-07-15 | 2004-07-15 | Chain type mobile coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1291170C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425615A (en) * | 2007-01-17 | 2012-04-25 | 盖茨公司 | Pronged sleeve-type flexible shaft coupling |
| CN103832495A (en) * | 2014-03-20 | 2014-06-04 | 山推工程机械股份有限公司 | Tooth profiles of caterpillar-track driving wheel, and driving wheel and caterpillar-track engineering vehicle provided with tooth profiles |
| CN102026729B (en) * | 2008-05-13 | 2015-06-17 | 阿尔法拉瓦尔股份有限公司 | Centrifugal separator |
| CN105333061A (en) * | 2014-06-27 | 2016-02-17 | 约翰迪尔（天津）有限公司 | Chain, chain coupler and connecting method of chain coupler |
| CN109769483A (en) * | 2019-03-04 | 2019-05-21 | 新乡市花溪科技股份有限公司 | A kind of self-propelled peanut pickup cropper gap bridge driving shaft |
-
2004
- 2004-07-15 CN CNB2004100134642A patent/CN1291170C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425615A (en) * | 2007-01-17 | 2012-04-25 | 盖茨公司 | Pronged sleeve-type flexible shaft coupling |
| CN102425615B (en) * | 2007-01-17 | 2015-09-09 | 盖茨公司 | Pronged sleeve-type flexible shaft coupling |
| CN102026729B (en) * | 2008-05-13 | 2015-06-17 | 阿尔法拉瓦尔股份有限公司 | Centrifugal separator |
| CN103832495A (en) * | 2014-03-20 | 2014-06-04 | 山推工程机械股份有限公司 | Tooth profiles of caterpillar-track driving wheel, and driving wheel and caterpillar-track engineering vehicle provided with tooth profiles |
| CN105333061A (en) * | 2014-06-27 | 2016-02-17 | 约翰迪尔（天津）有限公司 | Chain, chain coupler and connecting method of chain coupler |
| CN105333061B (en) * | 2014-06-27 | 2019-01-08 | 约翰迪尔（天津）有限公司 | A kind of chain, chain coupling and attaching method thereof |
| CN109769483A (en) * | 2019-03-04 | 2019-05-21 | 新乡市花溪科技股份有限公司 | A kind of self-propelled peanut pickup cropper gap bridge driving shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1291170C (en) | 2006-12-20 |
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Granted publication date: 20061220 |