CN201283989Y

CN201283989Y - Coaxial double flywheel bevel wheel group capable of improving manpower mechanical efficiency

Info

Publication number: CN201283989Y
Application number: CNU2007200776003U
Authority: CN
Inventors: 谢凯年
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-28
Filing date: 2007-12-28
Publication date: 2009-08-05
Anticipated expiration: 2017-12-28

Abstract

A coaxial double-flywheel bevel gear set capable of improving manpower mechanical efficiency is mainly used for bicycle, wherein, two feet pedal to rotate the mechanism and has higher efficiency, two special flywheels (a right flywheel (9) and a left flywheel (10)) are at a same main shaft (11), the outer profile of the special flywheels is not sprocket but a combination of straight gear and bevel gear, the bevel wheel gear parts of the two flywheels are meshed with a step bevel gear (13) into a bevel gear set, the straight gear parts of the two flywheels are respectively meshed with right and left arced rack gears (2), (4), the right and left arced rack gears (2), (4) are respectively connected to right and left pedal levers (1), (3), pedaling the right and left pedal levers (1), (3) up and down to dive the right and left arced rack gears (2), (4) to act on the straight gears of the right flywheel (9) and the left flywheel (10) to transmit the human power to the bevel gear set, so that the sprocket or gear (17) on the main shaft (11) of the bevel gear set outputs the oriented rotary power.

Description

A kind of coaxial round trip flight wheel bevel gear group that can improve human power mechanical efficiency

Technical field:

The present invention relates to machinery, be mainly used in bicycle with manpower.

Background technology:

The mechanical device of present every use manpower nearly all is directly to make mechanical rotation as circular movement with hand single crank (crank) or foot-operated double crank (bicycle pedal), though this device is simple and practical, but exist efficient not high, shortcomings such as easy fatigue.Because what machinery needed is circular movement, and the uncomfortable cooperation circular movement of the structure of human body is fit to reciprocating.Make circular movement and also have defective, illustrate with map analysis below: in Fig. 3, when people's pin is stepped on crank, have only preceding half-turn firmly, then half-turn does not firmly only rise and makes the crank reset response that makes progress.The power of the commissarial pin of F in Fig. 3, the direction of this power are downward all the time; V represents the component on the circular movement direction, and the direction of this power is the tangential direction of circle, and as can be seen from the figure direction is with change in location, and the angle between V and the F is also along with variation, and this can be formulated:

V＝F*Cosα

α is the angle of V and F, also is the angle number of position, minimum V=F*Cos90=0 when as can be seen from the figure top dead point 90 degree and bottom dead point-90 are spent

At this moment power thrusts becomes 90 degree with sense of motion, just turn round by inertia.At 0 degree place maximum, V=F*Cos0=F

So laborsaving more the closer to this position, efficient is high more.This scope greatly about-45 the degree to 45 the degree scopes in, the more little path of motion of scope is more near straight line, efficient is high more, V=F*Cos45=0.71F when 45 spend.

I gain enlightenment from the manual machine such as the manpower waterwheel in China's ancient times, think the efficient of the manual machine in Ancient Chinese generation such as manpower waterwheel also than this plant efficiency height, and the people can step on waterwheel and not too tired for a long time.This waterwheel is two long staight shanks of peace on wood spool, staight shank penetrates wood spool, staight shank two can be stepped on, as Fig. 5, two staight shanks are at a distance of about 20 centimetres of one-tenth 90 degree intersections on wood spool, and when left foot was stepped on left staight shank to-45 degree positions (b), one of right staight shank also went to 45 degree positions (a) and locates, at this moment right crus of diaphragm is stepped on, go to-45 degree (b) when locating, the other end of left staight shank also goes to 45 degree positions (a) and locates, and at this moment steps on left foot, left side staight shank steps down, the other end of right staight shank has also turned over, and goes round and begins again like this and has rotated wood spool, makes the waterwheel running.Although as can be seen from the figure staight shank and wood spool constantly change, the stroke of people's bipod is all the time between-45 degree are spent to 45.So economize the force efficiency height.But both feet will constantly skip to next staight shank when car water, and therefore safety just has problem, just can not use on the movable machinery of bicycle and so on.

Summary of the invention:

I inspire this device of invention down from ancient waterwheel, and as can see from Figure 6, treadle and arc-shaped rack combine, and can rotate to an angle around treadle axle (6).Left side treadle (3) is just in bottom dead point (b) position, right treadle (1) is in top dead point (a) position, between top dead point (a) and bottom dead point (b) position near with-45 the degree to 45 the degree positions, the two treadles up-and-down movement that tramping with one's feet, stroke is shown in band arrow camber line, this trip can be adjusted, and the stroke angle of general upper and lower stop is about 90 degree.

But two treadles pump and do not make circular movement and must solve two problems: how upwards not to be reset to top dead point after not making the circular movement treadle and stepping down, how left and right sides treadle cooperates, and treadle depresses the action of stepping on that another treadle must upwards be reset to next pin and prepares; The orientation that how to be converted into machinery that pumps of treadle is rotated, the function of the coaxial round trip flight wheel bevel gear group that will say below Here it is.

Fig. 7 is the main shaft portion constructional drawing of coaxial round trip flight wheel bevel gear group, can see the design of part of left flywheel and right flywheel from Fig. 8 and Fig. 9 clearly.This special flywheel structure inner core (a) is the same with bicycle freewheel, it is ratchet device, therefore directivity is arranged, left and right sides flywheel profile is the same, the ratchet direction that is exactly inner core (a) is opposite, the gabarit of bicycle freewheel is a sprocket wheel, here the gabarit of flywheel is straight gear (b) and umbrella finishing bevel gear cuter (c) combination, flywheel axle bush (d) plays a part flywheel is fixed on the main shaft, because in person with the bicycle freewheel transformation of the way, internal diameter is bigger, just doing an axle bush is fixed on the main shaft with the key bar, if batch manufacturing, autocratic flywheel internal diameter and main shaft closely cooperate, and just do not need axle bush.Left side flywheel (10) is consistent with the direction that right flywheel (9) is installed in the inner core on the main shaft (11), clockwise is to being forward on Fig. 7, close step umbrella finishing bevel gear cuter (13), become 90 degree to mesh together with the umbrella finishing bevel gear cuter of left and right sides flywheel (10) (9), close the step effect about plaing, be installed in and close fixing the closing on the step umbrella finishing bevel gear cuter bearing (14) of step umbrella finishing bevel gear cuter bolt of rear end plate (15), the top of closing step umbrella finishing bevel gear cuter bolt of rear end plate (15) is fixed on the main bearing seat (Fig. 1 12), three umbrella finishing bevel gear cuters mesh together into a bevel gear group, owing to close the transmission of step umbrella finishing bevel gear cuter (13), the gabarit rotation direction of a left side right flywheel of flywheel (10) (9) must be opposite, but the characteristic of flywheel is a forward can be driven main shaft and rotate together, oppositely then slide, how no matter how left flywheel (10) and right flywheel (9) rotate, main shaft (11) only to clockwise to rotation.This structure is referred to as coaxial round trip flight wheel bevel gear group visually.

In Fig. 1, left treadle (3) and left arc-shaped rack (4) are to combine with connecting pin (5), are installed on the left arc-shaped rack bearing (7) on the treadle axle (6), therefore can go up at treadle axle (6) and rotate.Right treadle (1) and right arc-shaped rack (2) respectively with dowel fixes on treadle axle (6), therefore can rotate together with treadle axle (6), because have left arc-shaped rack bearing (7) to combine between the treadle on the left side and tooth bar and the treadle axle (6), thus about part go up to rotate at treadle axle (6) and be independent of each other.Right treadle (1) also can be installed on the bearing as the left side with right arc-shaped rack (2), what but this figure represented installs on bicycle, between right treadle (1) and the right arc-shaped rack (2) bicycle chainwheel is arranged, limited by the status, in order not influence the running of sprocket wheel and chain, right treadle (1) and right arc-shaped rack (2) are fixed on treadle axle (6) and upward utilize axle to combine.Sprocket wheel (17) is installed on of main shaft (11), the direction of sprocket wheel (17) work done sees it is counterclockwise on Fig. 1, so flywheel is positive dirction with the counterclockwise, two flywheels all are installed on the main shaft (11), as long as a flywheel is made positive movement and just can be made main axis rotation, drive sprocket rotation, flywheel such as backward rotation, just go up and slide, do not influence the running of main shaft at main shaft (11).When left treadle (3) when stepping on, left side arc-shaped rack (4) is made counterclockwise together and is rotated, driving left flywheel (10) rotates clockwise, at this moment be reverse clockwise, left side flywheel (10) rotates and can not drive main shaft (11) rotation, but the umbrella finishing bevel gear cuter of left flywheel (10) gabarit makes and closes step umbrella finishing bevel gear cuter (13) rotation, be transferred to the umbrella finishing bevel gear cuter of right flywheel (9), right flywheel (9) counterclockwise is rotated, because this is a forward, right flywheel (9) just drives main shaft (11) and sprocket wheel (17) rotates together, straight gear on the meanwhile right flywheel (9) is rotated right arc-shaped rack (2) clockwise, right treadle (1) is to rising, to top dead point, step on right treadle (1) again, right treadle (1) and right arc-shaped rack (2) beginning counterclockwise rotate, driving right flywheel (9) rotates clockwise, owing to be reverse, the inner core of right flywheel (9) is inoperative to main shaft (11), and left flywheel (10) counterclockwise is rotated by the transmission of umbrella bevel gear set, because this is a forward, the inner core of left side flywheel (10) drives main shaft (11) and sprocket wheel (17) counterclockwise rotates, straight gear on the left flywheel of while (10) drives the left treadle of left arc-shaped rack (4) (3) and rotates clockwise, and left treadle (3) upwards resets until top dead point.The left and right sides treadle that goes round and begins again like this continues to swing up and down, main shaft (11) sprocket wheel (17) just constantly rotates, two treadle inputs is crank motion up and down in this device, to main shaft (11) output is directed the rotation, about having play a part again, coaxial round trip flight wheel bevel gear group cooperates, on must right treadle under the treadle of a left side, must left treadle under the right treadle on, for next step is prepared.

Fig. 2 is the position outside drawing that coaxial round trip flight wheel bevel gear is assembled in bicycle, and the effect of clipper (20) is the amplitude of fluctuation of restriction treadle and arc-shaped rack, does not limit amplitude of oscillation treadle and can fall on the ground, and arc-shaped rack can be deviate from gear.It is the stature that adjusting range is fit to each one that clipper (20) also has an effect, and the people has height, and there is length in the step, and the suitable amplitude of oscillation can be brought into play human efficiency.Clipper 3 can insert different eye to pin and adjust clipper length in Fig. 2, guard has individual iron bolt to block treadle or tooth bar, need only block one, because need not just keeping off, the restriction other end of umbrella bevel gear set limits, only can design at top dead point or only block at bottom dead point, generally more convenient at top dead point.

Also have a scheme to see figure (11), arc-shaped rack is actually the part of big gear wheel, the straight gear of its ratio of number of teeth flywheel is few, owing to be reciprocally swinging, what the tooth of straight gear had does not need yet, can not tooth punching during manufacturing, and the also not tooth punching of two of tooth bar, as figure (11), forward anodontia partial journey to and just stopped.The shortcoming of this scheme is can not adjusting range.For safety, can two scheme usefulness all, play safety effect when damaging as another device.

Description of drawings:

Fig. 1 is the organigram of coaxial round trip flight wheel bevel gear group device, (1) right treadle, (2) right arc-shaped rack, (3) left treadle, (4) left arc-shaped rack, (5) connecting pin, (6) treadle axle, (7) left arc-shaped rack bearing, (8) treadle bearing seat, (9) right flywheel, (10) left flywheel, (11) main shaft, (12) spindle bearing holder, (13) close step umbrella finishing bevel gear cuter, (14) close step umbrella finishing bevel gear cuter bearing, (15) close step umbrella finishing bevel gear cuter bolt of rear end plate, (16) close step umbrella finishing bevel gear cuter captive nut, (17) sprocket wheel.

Fig. 2 is the position outside drawing that coaxial round trip flight wheel bevel gear group device is contained in bicycle, and (18) are gear covers, and (19) are the chain wheel covers, and (20) are clippers.

Fig. 3 is the analysis chart that crank is exerted oneself when making circular movement.

Fig. 4 is the analysis of the power of bicycle double crank when top dead point and bottom dead point: (a) position is a top dead point, and (b) position is a bottom dead point.

The analysis of exerting oneself when Fig. 5 is waterwheel: (1) is left staight shank, and (2) are right staight shanks, and (3) are wood spools, and (a) position is the initial point of riding, and (b) position is leaving a little of riding.

Fig. 6 is the scheme drawing of coaxial round trip flight wheel bevel gear group: (1) right treadle, (2) right arc-shaped rack, (3) left treadle, (4) left arc-shaped rack, (6) treadle axle, (A) coaxial round trip flight wheel bevel gear group main shaft portion.(a) position is the top dead point of treadle, and (b) position is the bottom dead point of treadle.

Fig. 7 is coaxial round trip flight wheel bevel gear group device main shaft portion constructional drawing; (9) right flywheel, (10) left flywheel, (11) main shaft, arrow refer to main shaft rotation direction (13) and close step umbrella finishing bevel gear cuter, and (14) close step umbrella finishing bevel gear cuter bearing, and (15) close step umbrella finishing bevel gear cuter bolt of rear end plate, and (16) close step umbrella finishing bevel gear cuter captive nut.

Fig. 8 is the detail drawing of right flywheel, (a) flywheel inner core, the positive veer of flywheel that arrow refers to, (b) flywheel gabarit straight gear part, (c) flywheel gabarit umbrella finishing bevel gear cuter part, (d) axle bush.

Fig. 9 is the detail drawing of left flywheel, (a) flywheel inner core, the positive veer of flywheel that arrow refers to, (b) flywheel gabarit straight gear part, (c) flywheel gabarit umbrella finishing bevel gear cuter part, (d) axle bush.

Figure 10 closes step umbrella finishing bevel gear cuter constructional drawing: (13) close step umbrella finishing bevel gear cuter, and (14) close step umbrella finishing bevel gear cuter bearing, and (15) close step umbrella finishing bevel gear cuter bolt of rear end plate, and (16) close step umbrella finishing bevel gear cuter captive nut,

Figure 11 is an arc-shaped rack amplitude limit structural representation: (4) arc-shaped rack, (10-c) straight gear of flywheel gabarit

The specific embodiment:

Coaxial round trip flight wheel bevel gear group can be installed in the mechanical device of various use manpowers, as the manpower water pump, and man-power generator etc., yes the most widely bicycle, because efficiency ratio double crank height, so speed is very fast, upward slope power is big.More because conform with the anthroposomatology principle, the people can ride for a long time, indefatigability.Because bipod is to pump, and is not to step on circle, relatively safety is easily learned.The simple structure compactness can the stock production new car, also can make accessory, is retrofitted on the used car.

Claims

A kind of coaxial round trip flight wheel bevel gear group that can improve human power mechanical efficiency is mainly used in bicycle, and step with both feet and make mechanical rotation, but efficient is higher,

It is characterized in that: two right flywheels of special flywheel (9) and left flywheel (10) on same main shaft (11), the gabarit of special flywheel is not sprocket wheel but straight gear and umbrella finishing bevel gear cuter combination, one of the bevel gear partial sum of two flywheels closes step umbrella finishing bevel gear cuter (13) and meshes into a bevel gear group, the straight gear of two flywheels is each and left and right sides arc-shaped rack (2) partly, (4) engagement, left and right sides arc-shaped rack (2), (4) each and left and right sides treadle (1), (3) link, step left and right sides treadle (1) up and down, (3) can drive left and right sides arc-shaped rack (2), (4), the straight gear that acts on left and right sides flywheel (9) (10) arrives the bevel gear group to people's power transmission, make sprocket wheel or gear (17) outputting power on the main shaft (11) of bevel gear group, this power is directed rotation.