Drive sprocket of intermediate shaft, driven sprocket of intermediate shaft and set of drive and driven sprockets of intermediate shaft

FIELD: machine building.

SUBSTANCE: in a shaped wheel of a drive sprocket there is a central hole with enclosing surface for installation on a hub of a driven sprocket. On enclosing surface along the generatrix there is a groove for a pin and two grooves for fasteners. In shaped wheel of driven sprocket there is also one hole for a pin and two attachment holes. A set of drive and driven sprockets of intermediate shaft includes drive and driven sprockets similar to the above, each of which includes a shaped wheel having a hole for pin (16) and two attachment holes (17).

EFFECT: improving strength and reliability of connection of drive and driven sprockets.

3 cl, 6 dwg

 

The invention relates to the field of machine parts, in particular, to the design of chain drives, namely the structures of the intermediate shaft sprocket timing mechanism of an internal combustion engine.

Known design leading and driven sprockets of the intermediate shaft, standard engines ZMZ 4061, ZMZ 4063 GAZ 2705 "Gazelle" (see, for example, http://www.avtocniga.ru/agregat/prom_val.html or http://www.otveto.ru/avto/index.php/avto-remont/gaz-2705/21639--2705-5312---.html), selected as a prototype. Leading and driven sprockets include a profiled wheel with teeth. In the driven sprocket made the hole for the pin and two mounting holes. In the leading asterisk performed two mounting holes and the hole for the pin with the installed pin. In the assembled condition of the sprocket is bolted through the aligned mounting holes to end of the intermediate shaft, a pin mounted in the pin hole of the driven sprocket.

The shortcoming of known leading and driven sprockets of the intermediate shaft is insufficient tensile turning relative to each other when working in Assembly. Turning prevents the pin and the mounting screws. In practice there are many cases their transverse fracture as the result of heavy loads in place of the pair of stars.

The backside of the net assets of the invention - the design improvement leading and driven sprockets and set the leading and the trailing asterisks.

The technical result is to increase the strength and reliability of the connection leading and driven sprockets.

This technical result is achieved by the fact that in the leading asterisk intermediate shaft, comprising a profiled wheel with teeth, shaped wheel made the Central hole with the formation of a covering surface for mounting on the hub of the driven sprocket, covering the surface of the generatrix of the executed at least one groove for the pin and at least one groove for mounting of the element.

Also this technical result is achieved by the fact that the driven sprocket intermediate shaft, comprising a profiled wheel with teeth, at least one hole for dowel pin and at least one mounting hole, holds the hub on the side surfaces of which are made along the forming at least one groove for the pin and at least one groove for mounting of the element, respectively coaxially with a hole for the pin and mounting hole.

Also this technical result is achieved that included leading and driven sprockets, containing the driving and driven the car the key, each of which includes a profiled wheel with teeth, the driven sprocket is made of at least one hole for dowel pin and at least one mounting hole, driven sprocket includes a hub, on the side surfaces of which are made along the forming at least one groove for the pin and at least one groove for mounting of the element, respectively coaxially with a hole for the pin and the mounting hole in the profiled wheel sprocket is made the Central hole with the formation of a covering surface for mounting on the hub of the driven sprocket, covering the surface of the generatrix of the executed at least one groove for the pin and at least one groove for mounting the element with the formation of the Assembly at least one hole for dowel pin and at least one of the fixing holes.

The device illustrated by the drawings: figure 1 shows a drive sprocket intermediate shaft in section; figure 2 is a drive sprocket, a top view, figure 3 is led by the drive of the intermediate shaft in section; figure 4 is a driven sprocket, a top view, figure 5 - set leading and driven sprockets of the intermediate shaft in section; figure 5 is a set of leading and driven sprockets, top view.

Sprocket between the exact shaft includes a profiled wheel 1 with a ring gear 2. In the profiled wheel 1 has a Central hole 3 with the formation of the covering surface 4 to be mounted on the hub of the driven sprocket. On the covering surface 4 along a generatrix performed, for example, one groove 5 for the pin, and, for example, two grooves 6 for fastening elements.

Led by the drive of the intermediate shaft includes a profiled wheel 7 with a ring gear 8. In the profiled wheel 7 is made, for example, one hole 9 for the pin and, for example, two mounting holes 10, the Device includes a hub 11, on the side surface along which forming is performed, for example, one groove 12 for pin and, for example, two grooves 13 for fastening elements, respectively coaxially with a hole 9 for the pin and the mounting holes 10.

The set of leading and driven sprockets of the intermediate shaft includes a lead 14 and the driven 15 stars (figure 3), each of which includes a profiled wheel, respectively, 1 and 7, with a ring gear 2 and 8. In the profiled wheel 7 driven sprocket 15 is made, for example, one hole 9 for the pin and, for example, two mounting holes 10. Driven sprocket 15 includes a hub 11, on the side surface along which forming is performed, for example, one groove 12 for pin and, for example, two grooves 13 for fastening elements coaxially appropriate what about with a hole 9 for the pin and the mounting holes 10. In the profiled wheel 1 sprocket 14 is the Central hole 3 with the formation of the covering surface 4 to be mounted on the hub 11 and the driven sprocket 15. On the covering surface 4 along a generatrix performed, for example, one groove 5 for the pin and, for example, two grooves 6 for fastening elements with the formation of the Assembly at least one hole 16 for pin and, for example, two mounting holes 17.

The drive sprocket intermediate shaft, the driven sprocket intermediate shaft and a set of leading and driven sprockets of the intermediate shaft is used as follows.

The drive sprocket 14 in a production environment or when the engine repair set covering surface 4 on the hub 11 and the driven sprocket 15, the combining is performed on them groove to pin 5 and 12 and, at the same time, two pairs of grooves for fastening elements 6 and 13. Through formed by the combination of the grooves 5 and 11 for pin hole and coaxially him a 9 hole for dowel pin kit link pin. Via formed in the alignment of the grooves 6 and 13 for fasteners holes 17, and also through aligned them with the mounting holes 10 made in the driven sprocket 15, a set of leading and driven sprockets by means of fasteners, such as bolts, fastened to the end promezhutochnogo the shaft (Fig. not shown) of the timing mechanism of an internal combustion engine. After installing the sprocket chains, complete Assembly timing and the engine torque from the chain over the drive sprocket 14, the pin and the bolt is transmitted to the driven sprocket 15. Pin and bolts experience with this increased load, but to a drive sprocket is turned relative to the driven sprocket is necessary that the grooves 5 and 12 for the pin, made on the covering surface 4 and the hub 11, and two pairs of grooves 6 and 13 of the bolt shifted relative to each other. In this case, the pins and bolts should be cut in longitudinal section to a length that matches the width of the drive sprocket 14, and simultaneously cross-section at the point where the leading pair 14 and 15 guest stars.

The diameter of the pin, grooves and holes for the pins is chosen based voltage cutoff, resulting in longitudinal section of the pin, for example 5 mm

The driving and driven sprocket is made by casting and further processing.

Thus, compared with the prototype of the proposed leading and driven sprocket when used in the kit have greater durability and reliability due to the fact that you want to apply several times greater effort to turn odnozvezdochny relative to another.

1. Sprocket intermediate shaft, comprising a profiled wheel with teeth, characterized in that the profiled wheel made the Central hole with the formation of a covering surface for mounting on the hub of the driven sprocket on said surface along a generatrix made at least one groove for the pin and at least one groove for mounting of the element.

2. Led by the drive of the intermediate shaft, comprising a profiled wheel with teeth, which made at least one hole for dowel pin and at least one mounting hole, characterized in that it contains a nave, side surfaces of which are made along the forming at least one groove for the pin and at least one groove for mounting of the element, respectively coaxially with a hole for the pin and mounting hole.

3. The set of leading and driven sprockets of the intermediate shaft containing the driving and driven sprockets, each of which includes a profiled wheel with teeth, the driven sprocket is made of at least one hole for dowel pin and at least one mounting hole, wherein said driven sprocket includes a hub, on the side surface along which form in the executed at least one groove for the pin and at least one groove for fixing element, coaxial respectively with a hole for the pin and the mounting hole in the profiled wheel sprocket is made the Central hole with the formation of a covering surface for mounting on the hub of the driven sprocket, covering the surface of the generatrix of the executed at least one groove for the pin and at least one groove for mounting the element with the formation of the Assembly at least one hole for dowel pin and at least one of the fixing holes.



 

Same patents:

FIELD: machine building.

SUBSTANCE: closed multi-link chain of a chain drive is made from odd and even links (2, 3) accordingly. Links are alternately hingedly connected between each other with fingers (4, 5) to outer ledges (6) for engagement with slots on master and slave conical wheels of a variator. The chain is covered with a closed flexible element outside and the second flexible element installed inside the first one. Links (2, 3) are arranged each in the form of a pair of flat stepped cheeks (12) and rigidly connected to each other by flat or cylindrical crosspieces (13), installed on the longitudinal axis of symmetry of the link. Flexible elements are placed as capable of reciprocal displacement in gaps between crosspieces (13) and connecting fingers (4) of chain links.

EFFECT: invention makes it possible to reduce impact dynamic loads in a chain drive with simultaneous increase of torsional rigidity.

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FIELD: machine building.

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FIELD: machine building.

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EFFECT: invention allows increasing total transmitted power and kinematic accuracy of toothed chain transmission.

2 dwg

Chain transmission // 2455542

FIELD: machine building.

SUBSTANCE: chain drive includes a drive with the driving (10) and driven sprocket and an endless chain, performed with alternating links of two steps of different size. On the sprocket an additional contour of engagement with a bearing hinge is made. Teeth (11, 12) of the sprocket, contacting with a bearing hinge, are made with different side profiles, corresponding to the geometry of mating hinge of the load-bearing chain link. The bearing hinge is additionally equipped with roller (13), which provides running-in of the side profile of the teeth sprocket in contact with the bearing link. The axis of the bearing hinge are made compatible with a pitch circle in relation to the leading sprocket.

EFFECT: invention can reduce the load on the sprocket teeth and chain links.

3 cl, 4 dwg

FIELD: machine building.

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EFFECT: invention allows increasing the service life of chains and sprockets, increasing heat resistance, reducing friction, compensating the chain pitch increase during the rope drawing, improving stability of transmission ratio and reducing the sensitivity of chains to misalignment of axes.

17 cl, 15 dwg

Ball gear // 2421641

FIELD: machine building.

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FIELD: engineering industry.

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EFFECT: increasing life time of chain and sprockets.

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Chain gear // 2375618

FIELD: machine building.

SUBSTANCE: invention refers to general machine building and can be implemented in any of its branches where mechanic gears of rotary motion are used. The chain gear consists of two or more wheels-gears connected with chain (3). The gear corresponds to a unit wherein gear rim (K) consists of a set of separate sector parts connected with disk (4) of a gear with fit ring (6). Connections of gear rim (K) with disk (4) and fit ring (6) contain a system of slots and lugs facilitating adjustment of diametre of initial circumference of the gear and consequently its step bringing it to correspondence with the step of the chain by its wear. Adjustment is carried out with angular turn of the disk relative to the fit ring with tap wrench (8) with gear.

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6 dwg

FIELD: mechanical engineering; transport engineering.

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FIELD: mechanical engineering.

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11 cl, 24 dwg

FIELD: machine building.

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9 cl, 5 dwg

FIELD: machine building.

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EFFECT: invention allows enlarging the sprocket service life.

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FIELD: machine building.

SUBSTANCE: chain drive includes a drive with the driving (10) and driven sprocket and an endless chain, performed with alternating links of two steps of different size. On the sprocket an additional contour of engagement with a bearing hinge is made. Teeth (11, 12) of the sprocket, contacting with a bearing hinge, are made with different side profiles, corresponding to the geometry of mating hinge of the load-bearing chain link. The bearing hinge is additionally equipped with roller (13), which provides running-in of the side profile of the teeth sprocket in contact with the bearing link. The axis of the bearing hinge are made compatible with a pitch circle in relation to the leading sprocket.

EFFECT: invention can reduce the load on the sprocket teeth and chain links.

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Sprocket // 2446332

FIELD: machine building.

SUBSTANCE: proposed sprocket comprises round disk with multiple teeth and tooth spaces and, at least, one noise shield to reduce noise in chain running onto sprocket. Said noise shield includes mounting lug for engagement with sprocket and elastic element fitted thereon to attenuate chain running on sprocket. Elastic element comprises protective jacket or protective coating. Noise shield is arranged between segments of circular segment and below teeth of sprocket. Said segments are defined by geometrical lines between sprocket center and tooth spaces. At least one noise shield is arranged in every segment of circular segment.

EFFECT: decreased wear, longer life.

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FIELD: machine building.

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EFFECT: invention allows increasing the service life of chains and sprockets, increasing heat resistance, reducing friction, compensating the chain pitch increase during the rope drawing, improving stability of transmission ratio and reducing the sensitivity of chains to misalignment of axes.

17 cl, 15 dwg

FIELD: transport.

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EFFECT: sprocket that allows increased load on chain links.

29 cl, 7 dwg, 1 tbl

FIELD: machine building.

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EFFECT: raised efficiency of chain.

29 cl, 7 dwg, 1 tbl

FIELD: transport.

SUBSTANCE: invention relates to chain wheel for chain drives with rotation axis D and two chain link boxes 20, 30 arranged along chain wheel edges nearby each other and sifted relative two each other that cross chain wheel in inclined position. Each box 20, 30 has lateral wall and opposite wall, and webs 31, 21 arranged along circumference. To simplify producing chain wheel for inclined chain links and improve force distribution, this invention proposes make box lateral and opposite walls form support surfaces inclined to rotation axis D and run to box base section.

EFFECT: simplified design, better distribution of forces at chain loading bearing links.

19 cl, 13 dwg

FIELD: transport.

SUBSTANCE: invention relates to rotary device for chain drive or rotary device for extraction or transportation devices incorporating chain traction. Rotary device for chain and chain wheel incorporated therewith are proposed. Note here that lateral surfaces of bends in chain belt horizontal links are lower, in every case, than equatorial line, and that they represent concaved recess, while receiving horizontal recesses of chain wheel have their lateral surfaces of teeth made barrel-like protruded to mate concaved lateral surfaces of aforesaid bends.

EFFECT: reduced specific compression force between to parts.

22 cl, 10 dwg

FIELD: engineering industry.

SUBSTANCE: sprocket for chain gears includes hub and gear rim with even number of teeth and symmetric profile. Profile of working surfaces of each teeth of sprocket, which is located between two standard teeth, is made along internal equidistant line.

EFFECT: increasing life time of chain and sprockets.

3 dwg

FIELD: mechanical engineering.

SUBSTANCE: sprocket comprises asymmetrically shaped teeth. The working and back sides of each tooth of the sprocket has different evolvent shape.

EFFECT: enhanced durability.

2 dwg

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