The sprocket chain drive
(57) Abstract:The invention relates to mechanical engineering, in particular to closed fast chain transfer roller and timing circuits. The drive chain of transmission contains the hub and ring gear. The hub is made symmetrically located about the axis of rotation of the sprocket cavity filled with a viscous fluid. In the ring gear are made identical and arranged symmetrically to the axis of rotation of the sprocket channels with the possibility of receiving a viscous fluid from the cavity of the hub in the troughs of the teeth of the ring gear. This increases the durability of the chain transmission. 2 Il. The invention relates to mechanical engineering and can be used in a closed high-speed chain drive roller and gear chains.A device for reducing impact force in the chain engages and noise transmission by setting the elastic elements between the sprocket wheel and chain (application Germany N 3801865, MKI F 16 H 55/30).The disadvantage of this solution is the fragility of the elastic elements, in particular working environment oily liquid.Also known sprocket chain transfer (see a.with. N 1350, MKI F 16 H 55/30) with RA is ebony teeth and reduce noise transmission.The disadvantage of this design is the low durability of the chain transmission due to loss of elasticity, embrittlement and chipping viscoelastic material when working in an oil environment of the closed high-speed transmission and due to the volatility of the chain when out of engagement with an asterisk.The aim of the present invention is to increase the durability of the closed high-speed chain transmission.This goal is achieved by the fact that the sprocket hub, containing crown gear is made symmetrically with respect to the axis of rotation of the sprocket cavity filled with a viscous fluid, such as oil, and the ring gear are made identical and symmetrically arranged about the axis of rotation of the sprocket channels with the possibility of receiving a viscous fluid from the cavity of the hub in the troughs of the teeth of the ring gear.Produced by the rotation of sprocket effort hydrodynamic pressure of the viscous fluid flowing under the action of centrifugal forces of inertia of the cavity of the hub through the channels in the troughs of the teeth of the ring gear sprocket, it reduces the strength of the shock interaction of the chain links, inbound engages with the sprocket teeth, balances comfort is t, thus, the durability of a chain.In Fig. 1 depicts a fragment of the sprocket of Fig. 2 - cross section a-a in Fig. 1.Asterisk includes a wheel hub 1, in which the cavity 2 is filled with a viscous fluid, such as oil, and the same are located symmetrically relative to the axis of rotation of the sprocket channels 3, indicating the cavity 2 with cavities 4 of the ring gear 5 stars.Asterisk works as follows. A viscous fluid contained in the cavity 2 of the hub 1, under the action of centrifugal forces arising from the rotation of the sprocket moves along the channels 2, leaving in the depression 4 of the ring gear 5 excess pressure jets formed near the incoming engages the chain link and partially reducing the force of his blow on the sprocket teeth. Directed along the radius from the center of the sprocket, the force of fluid pressure helps smooth the output of the chain link out of engagement with a sprocket wheel at idle branch. The sprocket chain drive containing the hub and gear, characterized in that the hub is made symmetrically located about the axis of rotation of the sprocket cavity filled with a viscous fluid, and the ring gear is made of the bone of the cavity of the hub in the troughs of the teeth of the ring gear.
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.
FIELD: mechanical engineering.
SUBSTANCE: flexible sprocket comprises hub, rim, and flexible members that connects them and arranged over the periphery of the sprocket. The rim and hub have conical-cylindrical openings arranged concentrically over the periphery parallel to the axis of the sprocket. The conical parts of the openings face internal sides of the rim and the hub. The flexible members are made of flexible cylindrical rods and arranged in the conical-cylindrical openings of the hub and rim. The space between the hub and rim allows the flexible rods to be flexibly bent and the rim to be self-adjustable in the plane of the gearing.
EFFECT: prolonged durability.
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: 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: 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.
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.
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