Chain transmission

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

 

The invention relates to the field of engineering, in particular to chain the gears used in conveyors and conveyor systems for various purposes, including agricultural machines for pressing rolls of the beveled blockage.

Known chain transfer endless chain containing a set of load-bearing parts, alternating equal to the number of ordinary units.

Ordinary links consist of alternately set of pairs of inner and outer plates, pivotally interconnected by means of two coaxial spaced connecting elements interacting external connecting elements with the teeth of the sprocket during operation. Cm. Chain TRD-38-3000 according to GOST 4267.

The disadvantages of the known chain transfer can be attributed to the lack of attachment to the chain Executive bodies undergoes during operation, heavy loads, such as a rolling pin pressing mechanism of the baler.

Known more perfect the endless chain by RF patent for useful model No. 23934, MCL 7 F16G 13/12. Publ. 20.07.2002 year, containing a set of load-bearing parts, alternating equal to the number of ordinary units, consisting of alternately set of pairs of inner and outer plates, pivotally interconnected by means of two coaxially arranged connect the positive elements, forming a load-bearing hinge circuit prototype. Chain interacts external connecting elements with the teeth of the sprocket when driving, with the endless chain has two alternating load-bearing element consisting of two pairs of plates connected with the plates interleaved member parts, the ends of the pair of plates, one bearing element is placed within a pair of plates of the second bearing element and rigidly connected with the external connecting elements, and the inner connecting element is designed in the form of a sleeve rigidly connected with a pair of plates of the second bearing element, and the step of each of the two bearing units corresponds to 1.5 angular steps of the teeth of the sprocket. For the location of the supporting hinge on dividing the circumference of the sprocket performs sampling at the locations of the teeth. The angle at which the teeth of the sprocket transmit the payload is limited by the number of simultaneously being in engagement of ordinary hinges circuit and less than the angle of coverage of the sprocket chain, while supporting the joints in the mesh are not involved.

The disadvantages of the known devices can be attributed to the occurrence of the additional shock loads when the charge carrier hinge on the drive sprocket, caused by the lack of a corresponding contour of the gear on the sprocket, causing an uneven distribution of load elements (teeth) Zvezdochka reduces the smoothness of the chain, what causes low resistance to wear of the contact surfaces. If necessary, reduce the number of ordinary links between the bearing parts need to increase the number of samples under the bearing hinges on the sprocket, the number of teeth involved in the transfer of force is greatly reduced at a constant angle of coverage a chain.

The present invention is to reduce the loads on the teeth of the sprocket and the chain, including drums, as well as creating a reliable and more wear resistant chain of transmission, perceiving while significant work load by increasing the number of simultaneously being in engagement member and bearing-hinge chain.

This object is achieved in that on the sprocket performed additional circuit engagement with bearing hinge, with the sprocket teeth in contact with the bearing link, made with different lateral profile corresponding to the geometry of the mating hinge bearing chain link.

Bearing hinge is further provided with a roller, providing the forging side profile of the sprocket teeth in contact with the bearing element.

Axis bearing joints of the chain relative to the leading asterisk is made coincident with the dividing circle.

The ratio of the angular step supporting link of the chain to the corner of the Sha is the average of the element is equal to 1.5 or 2.

The novelty of the proposed technical solution is running on the sprocket additional circuit engagement with bearing hinge, with the sprocket teeth in contact with the bearing link, made with different lateral profile corresponding to the geometry of the mating hinge bearing chain link.

So, running on the sprocket additional circuit engagement with bearing hinge reduces the shock load, distributes the load over a larger number of sprocket teeth and chain links, allows to reduce the specific load on each tooth sprockets and the chain link and reduces wear on the chain of transmission as a whole.

Signs perform a weight-bearing joint, is provided with an additional roller, providing the forging side profile of the sprocket teeth in contact with the bearing link, perform the axes of the load-bearing joints of the chain links relative to the leading asterisk is coincident with the pitch circle and the execution ratio of the angular step supporting link to the angular step the ordinary level equal to 1.5 or 2 are additional signs that reveal specific embodiment of the main features and aims at achieving the invention of the task.

Figure 1 shows the construction of the chain of transmission.

Figure 2 schematically PR is degema chain transmission with two samples under bearing hinge.

Figure 3 schematically illustrates a chain transmission with three samples under bearing hinge.

Figure 4 shows the chain transfer of the prototype, showing the geometry of the excavation under bearing hinge.

Chain drive consists of an endless roller-stub plate chain consisting of symmetrically mounted member side plates 1, 2, bearing plates 3, 4, rolls 5, bushings 6, 7, 8, rollers 9 and the drive sprocket 10 teeth 11 and teeth 12 with different side profiles. The additional roller bearing 13 of the hinge is mounted on the outer sleeve 6 in contact with the side surfaces of the teeth 12. Axis-rolling pin 14 is the working body, for example, of the baler.

Offer chain transfer works as follows:

On each host hinge circuit formed by the bushings 7, 8, chain drive mounted, for example, axis-rolling pin 14 of the baler, perceiving the load during works associated with the selection and rolls in rolls, for example, Sen. The endless chain rollers 9 ordinary hinges and outer sleeves 6 bearing units through additional rollers 13 is engaged with a leading asterisk 10. During the rotation of the drive sprocket 10, the load perceived by the axes of the rolling pin 14 of the bearing units is transmitted to the sprocket 10 and the chain links. With all perceive the axes of the rolling pin 14 during the work what s the load is evenly distributed on all teeth of the sprocket 10, covered chain, and eliminates additional shock loads when the overrunning load-bearing joints of the chain on the sprocket teeth. In the proposed design is the situation when the load is subject only to ordinary teeth sprocket, as part of the load takes over and the hinge bearing chain link, interacting through the corresponding recesses made in the body of the sprocket. There is a redistribution of the load covered by the chain of the sprocket teeth.

The execution of the bearing axes of the hinge joints of the chain relative to the leading asterisk is coincident with the dividing circle promotes uniform distribution of perceived stress on the chain and drive sprocket.

The ratio of the angular step supporting link to the angular step the ordinary level, is made equal to 1.5 or 2.0, allows to provide in a construction of chain gearing bearing hinge chain on a standard profile of the sprocket chain.

The presence of the roller bearing hinge provides for additional testing side profile of the sprocket teeth in contact with the bearing element, and provides the perception part of the load, reduces wear on the tooth surface, puts the slip in the rolling.

Currently on offer chain transfer of the developed design documentation, and the prepared samples transfer, shown when the test positive results.

The decision is made to prepare the production of the proposed chain of transmission.

1. Chain transmission comprising a drive gear and the driven sprocket and an endless chain made with alternating links of two different size steps, characterized in that on the sprocket performed additional circuit engagement with bearing hinge, with the sprocket teeth in contact with the bearing joint, made with different lateral profile corresponding to the geometry of the mating hinge bearing chain link, while the axle of the main hinge of the chain relative to the leading asterisk is made coincident with the dividing circle.

2. Chain transmission according to claim 1, characterized in that the carrier is further provided with a hinge roller, providing the forging side profile of the sprocket teeth in contact with the bearing element.

3. Chain transmission according to claim 1, characterized in that the ratio of the angular step of dividing the circumference of the larger sprocket of the chain link to the angular step of a smaller chain link is made equal to 1.5 or 2.



 

Same patents:

FIELD: machine building.

SUBSTANCE: chain transmission includes sprockets (1, 2) and rope (3) with balls (4) fixed on it. Rope is entered to longitudinal slots or holes of balls, and plugs (10) serving for rope tension are entered to threaded or clearance holes perpendicular to them. In the second version of chain transmission the rope has bushes fixed on it. For compensation of pitch increase during the rope drawing at the bushes there made are longitudinal threaded holes into which threaded plugs or screws are introduced. In the third version of chain transmission the flexible transmitting element is represented with two and more ropes which are entered to transverse grooves or holes of bushes and fixed in them. In the fourth version of chain transmission, in order to obtain closed rope loop, its ends are entered on both sides to transverse holes of closing ball or bush, which are assembled of two halves. In the fifth version of chain transmission the sprockets are provided with elastic teeth the sides of tops of which and on the side of cavities throughout the length of teeth, or on the side of their end surfaces, or in staggered order, or in various combinations there made are slots in radial direction.

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.

SUBSTANCE: mechanical gear with flexible interlinking consists of driving (1) and driven (2) sprockets, of case (3) of gear, of end cover, of working balls and of gap compensating device (6) with shaped sprocket (7). In case of local damage independent component parts of the gear facilitate replacing out-of-work part, while leaving the rest parts working. As working balls there can be used steel balls produced at ball bearing plants in various product mix. The gear can be implemented at vertical arrangement of parallel shafts, also at set off of the driving and driven sprockets on parallel shafts. At good gap-less fit of working balls the gear is reversed.

EFFECT: raised processability and service life of gear in whole.

7 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

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.

EFFECT: increased operation life of chain, reduced cost for spare chains for facilitation of required resource of chain gear.

6 dwg

FIELD: mechanical engineering; transport engineering.

SUBSTANCE: invention relates to transmissions with stepless change of gear ratio. Proposed variable-speed drive contains input shaft, output shaft, two driving pulleys, one of which is fixed and the other is movable, installed for axial displacement of fixed driving pulley, drive chain two driven pulleys, one of which is fixed and the other is movable, installed for axial displacement of fixed driven pulley. Movable and fixed pulley are arranged in crosswise manner. Variable-speed drive is provided with input and output pressure devices consisting of pressure bushing with paths of pressure device with variable angle of pressing, rollers and paths of pressure device with variable angle of pressing made on input and output shafts.

EFFECT: reduced overall dimensions of variable-speed drive, increased load-carrying capacity of drive chain.

3 cl, 8 dwg

FIELD: mechanical engineering.

SUBSTANCE: chain transmission comprises chain (2) that is composed of a set of links (5) each of which is connected with the other one so that they can rotate around the axis of rotation and sprocket (3A) that can rotate around the axis of rotation and has driving means that cooperate with the links of the chain during operation. The chain transmission additionally has bearing means (10A) and (10B) for directing the chain links so that the axis of rotation at a distance form the sprocket always has a constant velocity when sprockets rotates with a constant speed. The bearing means have rotating cylindrical bearing (10B) that rotates together with sprocket (3A) to direct the chain links by cooperation with the bearing surfaces made on links (5) so that the distance between the axis of rotation and axis of rotation is variable when the bearing surface bears on the rotating cylindrical bearing (10B).

EFFECT: prolonged service life.

11 cl, 24 dwg

FIELD: common mechanical engineering, design of chain transmissions, possible use in drives of working organs of agricultural machines and tools, and in other industrial branches.

SUBSTANCE: chain contains internal plates, immovably connected to bushings, on which rollers are pinned forming internal links. Outside plates are immovably connected by cylinders, passing through apertures of bushings, and form outside links. Step of internal and external links is determined from condition tex<t<tin, where tin - step of internal link of roller-bushing chain, tex - step of external link of bushing-roller chain, t=0,5·(tex+tin) - nominal step of chain (transmission).

EFFECT: increased durability and evenness of chain movement.

2 cl

Chain transmission // 2296255

FIELD: mechanical engineering.

SUBSTANCE: chain transmission comprises driving sprocket (1), two driven sprockets (2) and (3), and chain that embraces the sprockets. The sprockets are shifted one with respect to the other along the shafts. The gear rims of the sprockets are mounted with a spaced relation one with respect to the other and are spaced from the plates of chain (4). Second driven sprocket (3) is mounted symmetrically to first sprocket (2) with respect to driving sprocket (1). The chain has three rows.

EFFECT: enhanced reliability and prolonged service life.

1 dwg

Shifting mechanism // 2278308

FIELD: automobile window risers, drives of radiator blinds.

SUBSTANCE: proposed shifting mechanism includes chain located in guides and connected with part to be shifted, drive and driven gears. Drive gear is so positioned that it may be released from one of chain strands.

EFFECT: enhanced technology of designing, manufacture and use of mechanism.

2 dwg

The invention relates to the field of engineering

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.

12 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: chain transmission includes sprockets (1, 2) and rope (3) with balls (4) fixed on it. Rope is entered to longitudinal slots or holes of balls, and plugs (10) serving for rope tension are entered to threaded or clearance holes perpendicular to them. In the second version of chain transmission the rope has bushes fixed on it. For compensation of pitch increase during the rope drawing at the bushes there made are longitudinal threaded holes into which threaded plugs or screws are introduced. In the third version of chain transmission the flexible transmitting element is represented with two and more ropes which are entered to transverse grooves or holes of bushes and fixed in them. In the fourth version of chain transmission, in order to obtain closed rope loop, its ends are entered on both sides to transverse holes of closing ball or bush, which are assembled of two halves. In the fifth version of chain transmission the sprockets are provided with elastic teeth the sides of tops of which and on the side of cavities throughout the length of teeth, or on the side of their end surfaces, or in staggered order, or in various combinations there made are slots in radial direction.

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.

SUBSTANCE: sprocket (23) has outer circular surface (26) and fulcrum pin, recesses for chain horizontal links and recesses for chain vertical links. Recesses for chain vertical links are separated by teeth 36. Side face 39 of tooth in contact with loaded chain vertical link features special profile and sizes. Chain sizes are selected so that vertical link does not come in contact with tooth side face by its front part unless definite load is applied on the chain. Contact between tooth side face and front part of chain appropriate link occurs only definite load is exceeded.

EFFECT: sprocket that allows increased load on chain links.

29 cl, 7 dwg, 1 tbl

FIELD: machine building.

SUBSTANCE: guiding roller (8) for link chains, for example, for round-link chains or chains out of profile steel, has recesses (28) along perimetre for horizontal links of chains and recesses (35) for vertical links of chains. Recesses (35) for vertical links of the chains are separated from each other with teeth (36). Sides (39, 41) of teeth (36), where a vertical link of the chain adjoins under load, are calculated and profiled by a special procedure. The calculation ensures a gap between the vertical link of the chain with its front part and the side surface of the tooth untill the chain is loaded to a specified load. Side surface of the tooth and front part of the corresponding vertical link of the chain contact only after specified load onto the chain.

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

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.

EFFECT: increased operation life of chain, reduced cost for spare chains for facilitation of required resource of chain gear.

6 dwg

FIELD: transport engineering.

SUBSTANCE: proposed motorcycles suspension system contains first sprocket including hub with cross slot on outer surface and ring engaging with hub and provided with surface for engaging with belt, and stop member engaging with hub to hold ring on hub. Ring is made with profile and projection on inner surface for relative engagement with slot. Sprocket is connected to wheel. Ring is made of polymeric material. Motorcycle suspension system contains also frame member, hinged lever connected to frame member in point of turning, said ring being connected by axle to hinged lever, and shock absorbing member arranged to connected hinged lever and frame, and second sprocket installed for engagement with first sprocket. Sprocket of motorcycle suspension system has hub, ring engaged with hub through adhesive material. Ring has profile on outer surface for engagement with belt and radially directed projection passing crosswisely on inner surface of ring. Inner diameter of ring is smaller than outer diameter of hub. Hub is provided with slot for engagement with projection. Ring is made of polyurethane.

EFFECT: prevention of rotation between hub and detachable working surface.

5 cl, 10 dwg

FIELD: mining industry.

SUBSTANCE: invention relates to chain wheel for underground mining, particularly, to chain scraper conveyor with chain drive. Proposed chain wheel with first rim consisting of first tooth elements uniformly spaced over perimeter of chain wheel body and at least one second rim axially displaced relative to first rim and consisting of other tooth elements uniformly distributed over perimeter. Sides of tooth elements pointed to each other are provided with cavities which serve as contact surfaces of lying links of chain. Contact surfaces in cavities of each tooth element consist of wear lining made of wear-resistant material.

EFFECT: increased service life of chain wheels.

26 cl, 10 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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