CN2316238Y - Double chain driver - Google Patents

Abstract

Disclosed is a double chain driving device, which relates to a vehicle driven by man-power, a sledge, etc., particularly the driving device of the vehicle or the sled. The utility model is composed of a driving shaft, an accessory shaft, chain wheels, a flywheel, a chain, etc. The chain wheel and a wheel casing which is matched with the driving shaft by rotation are fixed on the driving shaft; the wheel casing is fixed with the flywheel; both ends of the accessory shaft which is provided with a shaft sleeve are respectively fixed with the two chain wheels with different radius; the chain wheel on the driving shaft is connected with the chain wheel with a small diameter on the accessory shaft in a ring way by a chain; the flywheel on the wheel casing is connected with the chain wheel with a big diameter on the accessory shaft in a ring way by the chain. The utility model has the advantages of good transmission performance, simple structure, etc.

Description

Double-stranded bar actuating device

The utility model relates to manually driven vehicle, sled etc., relates in particular to its actuating device.

Bicycle, manual tricycle, water cycle, manpower sled are to use very wide riding instead of walk and transportation means, and its structure is widely known by the people; Wherein, more be well known with bicycle especially.Bicycle is since being born, because its structure design is quite reasonable, so for over 100 years more than a hundred years, though many local improvement are arranged, as reduce the bearing of rotatable parts internal friction power, adapt to road gradient and wind direction in the hope of laborsaving or improve the change-speed box etc. of speed, but its integral structure and profile there are not yet important breakthrough to improve.Over past twenty year, people have designed the collapsible portable bicycle of multiple structure, reclining posture bicycle and tandem bicycle etc. for travelling handy, old person's needs.These bicycles owing to will adapt to the structural change of the transposition of folding or driven wheel, driving device has also been done corresponding design, but these driving device members are more, and assembling and maintenance be trouble all, often therefore and influence is used.

The purpose of this utility model is: improve the amphibious vehicle that available man-power drives and the actuating device of sled, simplifying its structure, and can satisfy the needs of a change appearance, governing speed and stressed size.

For achieving the above object, the utility model adopts following technical scheme:

Double-stranded bar driving device of the present utility model, constitute by two pedals, two cranks, axle drive shaft, asessory shaft, three sprocket wheels, flywheel, hub and bicycle driving wheels, axle drive shaft middle part be set with an inwall be provided with bearing and with the hub axle drive shaft concentric and that becomes to turn cooperation, flywheel is fixed in an end of hub and becomes synchronously with it with rotary way not and rotates, and hub is by spoke and the connection of driving wheel rim; On the axle drive shaft hub other end outside be provided with become with axle drive shaft can not normal-running fit sprocket wheel, on the axle drive shaft in aforementioned flywheel and the sprocket wheel outside, be equipped with two symmetrically and become to turn the snap ring of cooperation with axle drive shaft, be provided with bearing in the snap ring, it is the card that is connected and fixed acute angle and that through hole is arranged that the snap ring outer wall is provided with two angles of cut, the outside of two snap rings is equipped with axle drive shaft and becomes affixed crank on the axle drive shaft, and crank becomes to turn connection with pedal; Position in distance axle drive shaft axle center greater than radius of wheel is provided with an asessory shaft, this asessory shaft axial line and axle drive shaft axis parallel, the asessory shaft middle part is provided with and becomes the rotatable axle sleeve that cooperates with it, be provided with bearing or ball between this axle and the axle sleeve, the axle sleeve outer wall is connected with two preceding chain stays at grade, and preceding chain stay is by the connection that fixes of fastener and fixed card and snap ring; The aforementioned sprocket wheel that is packed on the axle drive shaft connects with chain row culture annular with the path sprocket wheel that is packed in asessory shaft one end, and the flywheel that is packed on the hub connects with another chain row culture annular with the big footpath sprocket wheel that is packed in the asessory shaft other end.

Understand the technical solution of the utility model and its effect for clearer, be described below with accompanying drawing in conjunction with the embodiments now:

Fig. 1--double-stranded bar transmission structures scheme drawing.

The cut-away view of Fig. 2--Fig. 1.

Fig. 3--snap ring structural representation

Embodiment: my unit has made a new bicycle sample car that front-wheel is a driving wheel, double-stranded bar driving device of the present utility model is fixed in the front fork end of cycle handlebar below by be connected and fixed card 15 and the fastener on it, and connect auxiliary and front fork top, constitute stable triangle or sector structure by pitman, simultaneously flower wheel is connected on the wheel carrier at vehicle frame rear portion, wheel is as the new bicycle of driving wheel before constituting.The transmission process and the characteristics of sample car are as follows: when the rider scrunches pedal 3, crank 2 promptly drives axle drive shaft 7, make sprocket wheel 9 rotations that are packed on the axle drive shaft 7, this sprocket wheel 9 is fixed in sprocket wheel 12 rotations of asessory shaft 1 one ends by chain 5 transmissions, and the sprocket wheel 11 that is packed in asessory shaft 1 other end is rotated with unequal angular velocity.Sprocket wheel 11 drives flywheels 13 by chain 4 and does unidirectional rotation, and the hub 8 with the flywheel Joint is rotated synchronously with flywheel, and the wheel that uses spoke to connect rotates synchronously, thereby the bicycle flower wheel is advanced under the drive of driving wheel.In double-stranded bar actuating device of the present utility model, parallel and distance adjustment between axle drive shaft and the asessory shaft, be to guarantee by the chain stay 14 that is connected in snap ring 16, the fixed card 15 on the transmission shaft 7 and be fixed on the asessory shaft 1, the low friction of each rotating element is respectively to be guaranteed by the bearing 19 that the bearing 18 that holds 17, adorns in the snap ring between axle drive shaft 7 and the hub 8 and asessory shaft 1 and shaft room are installed.Double-stranded bar driving device structure of the present utility model is simple, changes car speed and stressing conditions by changing sprocket wheel easily, and is easy to assembling and maintenance, and is easy to use, flexible, realized the purpose of the utility model fully.

Claims (1)

1. A kind of double-stranded bar actuating device, constitute by pedal, crank, axle drive shaft, sprocket wheel, flywheel, chain, it is characterized in that: it is made of two pedals, two cranks, axle drive shaft, asessory shaft, three sprocket wheels, flywheel, hub and bicycle driving wheels, axle drive shaft middle part be set with an inwall be provided with bearing and with the hub axle drive shaft concentric and that becomes to turn cooperation, flywheel is fixed in an end of hub and becomes synchronously with it with rotary way not and rotates, and hub is by spoke and the connection of driving wheel rim; On the axle drive shaft hub other end outside be provided with become with axle drive shaft can not normal-running fit sprocket wheel, on the axle drive shaft in aforementioned flywheel and the sprocket wheel outside, be equipped with two symmetrically and become to turn the snap ring of cooperation with axle drive shaft, be provided with bearing in the snap ring, it is the card that is connected and fixed acute angle and that through hole is arranged that the snap ring outer wall is provided with two angles of cut, the outside of two snap rings is equipped with axle drive shaft and becomes affixed crank on the axle drive shaft, and crank becomes to turn connection with pedal; Position in distance axle drive shaft axle center greater than radius of wheel is provided with an asessory shaft, this asessory shaft axial line and axle drive shaft axis parallel, the asessory shaft middle part is provided with and becomes the rotatable axle sleeve that cooperates with it, be provided with bearing or ball between this axle and the axle sleeve, the axle sleeve outer wall is connected with two preceding chain stays at grade, and preceding chain stay is by the connection that fixes of fastener and fixed card and snap ring; The aforementioned sprocket wheel that is packed on the axle drive shaft connects with chain row culture annular with the path sprocket wheel that is packed in asessory shaft one end, and the flywheel that is packed on the hub connects with another chain row culture annular with the big footpath sprocket wheel that is packed in the asessory shaft other end.

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