CN102322505B

CN102322505B - Driving device

Info

Publication number: CN102322505B
Application number: CN201110161209.2A
Authority: CN
Inventors: 覃国君
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2014-02-05
Anticipated expiration: 2031-06-14
Also published as: CN102322505A

Abstract

The invention discloses a high-mechanical-efficiency driving device. The driving device is characterized by comprising a plurality of drive mechanisms connected in series, wherein each drive mechanism is provided with a group of four-bar mechanisms connected in parallel and a crankshaft (1) which is connected with the four-bar mechanisms, one end of a connecting rod (4) of each four-bar mechanism is movably connected with one crank throw (3) of the crankshaft, the other end of each connecting rod (4) is movably connected with a torsion bar (10), and each four-bar mechanism is provided with multi-section parallelogram retractor device; one end of the multi-section parallelogram retractor device is articulated with a rack, the other end of the multi-section parallelogram retractor device is articulated with a ring chain device; the torsion bar is mutually connected with one of sections of the multi-section parallelogram retractor device so as to form a lever device to act on a chain; and the ring chain device is meshed with a group of chain wheels with spaced center distance, the rotation centre of one of chain wheels is provided with an overrunning clutch device so as to transfer a torque to an assigned direction. In the driving device provided by the invention, the lever device is utilized to ensure that the force can not be weakened, the chain can obtain a larger running stroke so as to obtain the large torque for the chain wheels, thereby improving the mechanical efficiency.

Description

A kind of transmission device

Technical field

The present invention relates generally to a kind of mechanical device, particularly a kind of transmission device.

Technical background

Improving as far as possible mechanical transmission efficiency is that engineering circles is pursued.Chinese invention patent application, application number 201010189496.3, name is called " self-driven type unpowered vehicle that can increase rocking bar pivot angle ", a kind of technological scheme is provided on the basis of application number 200810044287.2 patent applications, the transmission device that comprises some groups of serial connections, in each transmission device, there are one group and the fourbar linkage that connects, described fourbar linkage is all connected with a bent axle, a crank throw of each bent axle forms the crank that a fourbar linkage connects, crank one end is connected with connecting rod, there is a set of rocker actuator, the other end of described rocker actuator and frame are movably hinged formation oscillation center, using oscillation center as a center of rotation that is fixed in the arc gear wheel on rocking bar, arc gear wheel and an intermittently back and forth engagement of small gear, press direction initialization transmitting torque with the gearwheel that small gear is coaxial, described moment of torsion drives the bent axle in the transmission device of another serial connection, the moment of torsion band dynamic load that afterbody transmission device forms, its specialization is to access between rocking bar and connecting rod a changeable structure of length, by connecting rod, control the flexible of this structure, one end Yu Gai mechanism of rocking bar is connected.

The changeable structure of described length is many group parallelogram extending meanss.

Said apparatus utilizes the parallelogram of group more than extending means to be connected between rocking bar and connecting rod, increased the pivot angle of rocking bar, but due to structural relation, when being delivered to rocking bar, the power that connecting rod gives extending means cut down, so although the pivot angle of rocking bar increases, but the moment that promotes rocking bar swing reduces, and does not reach desirable effect, so must be improved further such scheme.

Summary of the invention

The object of the present invention is to provide one can overcome known technology shortcoming, give to be similar to the reciprocating like this device of rocking bar and to have larger reciprocating stroke, and the power that promotes this device do not weakened, thereby utilized the transmission device of described device work done.

For achieving the above object, the solution of the present invention is: a kind of transmission device, the driving mechanism that has some serial connections, in each driving mechanism, there are one group and the fourbar linkage connecing and the bent axle being attached thereto, a crank throw of the connecting rod one end in each fourbar linkage and bent axle is movably connected, one end is flexibly connected a power bar, one more piece parallelogram expansion device is set, more piece parallelogram expansion device one end and frame are hinged, the other end and a ring chain device are hinged, described ring chain device and a group switching centre are apart from the sprocket engagement separating, the gyration center of one of them sprocket wheel is equipped with overrunning clutch, to assigned direction transmitting torque, its specialization is: power bar one end and rod hinge connection, one end is connected with more piece parallelogram expansion device joint wherein, form three articulating points, one section of limit that forms first rhombus between articulating point in three articulating point neutral positions and end articulating point, in the first rhombus, end on the rhombus limit relative with vertical rod and ring chain are hinged, between the articulating point in neutral position and another articulating point, form a limit of second rhombus, power bar is hinged by another articulating point and a limit that forms Three Diamond, one end and the frame on a limit of Three Diamond have an articulating point.

Adopt such scheme, expansion device is connected on a reciprocating device being comprised of chain sprocket, be connected to the connecting rod of force mechanisms with expansion device, directly masterpiece is used in chain sprocket, this power can not weaken, and chain obtains larger reciprocating stroke, makes sprocket wheel obtain large moment of torsion, realize the raising of mechanical efficiency, thereby realized object of the present invention.

Below in conjunction with diagram and embodiment's more detailed description technological scheme of the present invention.

Accompanying drawing explanation

Fig. 1 is a kind of structural drawing of transmission device;

Fig. 2 is the structural drawing of drive part in Fig. 1;

Fig. 3 is embodiment 2 shrinking structure figure.

Embodiment

Embodiment 1, as shown in Figure 1, in the some groups of transmission devices that are connected in series one group is installed in cabinet, there is a bent axle 1, power with dynamic crankshaft is passed over by belt pulley 2, on each root bent axle, there are three crank throws 3, crank throw is pressed 120 ° of distributions of circumference, on each crank throw, be connected with a connecting rod 4, each root connecting rod connects the parallelogram expansion device 5 described in a prescription case, a set of sprocket wheel chain transmission drives a gear 6, gear 6 centers of rotation are equipped with overrunning clutch, press direction initialization transmitting torque, gear 6 passes motion to gear 7, 3 gears 7 have common turning axle 8, by the belt pulley being fixed on axle 8, power transmission is gone out.

For making gear 6 stable drive, overcome the reasons such as motion dead point, on the axle being connected with gear 6 at each, gravity wheel 9 is housed.

As the drive part structural drawing of Fig. 2, as described in scheme, each crank throw 3 of bent axle is connected with connecting rod 4 one end of a fourbar linkage, one end of the other end of connecting rod and a power bar 10 is hinged, the power bar the other end and extending means join, and the joint that described extending means is comprised of one group of parallelogram being connected in series forms, and the every limit of parallelogram of the present embodiment equates, form rhombus, power bar 10 joins and forms rhombus wherein with extending means.Power bar 10 is except hinged with connecting rod 4, also there are three articulating points 12 with extending means, 13, 14, one section of limit that forms first rhombus 15 between articulating point 13 in three articulating point neutral positions and end articulating point 14, between middle articulating point 13 and another articulating point 12, form a limit of second rhombus 16, another relative rhombus limit 17 in the first rhombus 15 is also hinged with a chain 18, power bar 10 joins with rhombus limit 17 by the limit 19 in the first rhombus 15, from mechanical structure, can regard two leverages as in effect, lever be take the fulcrum that articulating point 13 is lever, the length of the power bar 10 on articulating point 13 the right is the arm of force, the rhombus length of side between articulating point 13 and articulating point 14 is weighing arm, another lever be take articulating point 12 as balance pivot, the length of the power bar 10 on articulating point 12 the right is the arm of force, between articulating point 12 and articulating point 14, it is the arm of force, according to lever law, power * arm of force=weight * weighing arm, on power bar 10 and connecting rod 4 tie points, obtain a power F, on the other end articulating point 14 of power bar 10, obtain a power F ＇ that specific force F is much bigger, by rhombus limit 19, act on limit 17, limit 17 acts on chain 18 by the form by F ＇ component, suppose it is pulling force, chain 18 is pulled, sprocket wheel 20 inhours that overrunning clutch is housed are rotated, because 4 pairs of connected power bars of connecting rod 10 periodically act on and pushing away, draw, so power bar 10 is under tension or thrust periodically, chain 18 is repeatedly drawn or is pushed away, alternately counter-clockwise with the sprocket wheel of chain engagement, clockwise rotate, if transmitting torque during the motion of the overrunning clutch of sprocket wheel inhour, while clockwise rotating, skid, sprocket wheel will pass moment of torsion off and on.

As above-mentioned, power bar 10 also forms a limit of second rhombus 16, and the second rhombus 16 and a Three Diamond 21 join, and a limit 11 and the frame of Three Diamond have an articulating point 22, and whole extending means has one end for being fixedly hinged.

When power bar 10 is by leverage during to chain 18 working tension, also 16 1 Three Diamonds 21 of second rhombus are compressed, the bar 10 working tensions stroke when chain of exerting all one's strength is longer, because expansion device is connected in series by the formed joint of a plurality of rhombuses, a distortion, to obtain a plurality of distortion, its distortion total amount equals λ times an of amount of deformation, and wherein λ is the number of expansion device joint.

In general, the joint of the compression set being comprised of power bar 10 is preferably arranged in first segment or the second section being connected with chain, and the joint of whole compression set has three or four, is preferably three.

According to the rule of work done, power institute work=power is multiplied by distance, and distance is longer, and institute's work is larger, and the second rhombus and Three Diamond guarantee that power bar 10 obtains the distance of work done, and to 10 a kind of supporting effects of power bar.

It is one guide locating device provided that described expansion device has, and is included in articulating point 14,23, and a rolling bearing 25 is respectively housed on the axle at 24 places, and rolling bearing 25 is packed in guide groove 26, and whole device is moved in guide groove.

Embodiment 2, above-mentioned guide locating device providedly also can adopt structure as shown in Figure 3, by the axle of the articulating point in the middle of expansion device, rolling bearing are installed, and packed in guide groove 26.

It is apparent adopting the working principle of such scheme device, when bent axle rotates, its axle journal drivening rod 4 is done plane motion, if bent axle clockwise rotates, within the scope of one 180 °, connecting rod is to power bar 10 effects pulling force upwards, as previously mentioned, at leverage lower link point 14, by rhombus limit 19, act on rhombus limit 17 1 pulling force, the joint of rhombus limit and chain obtains the component along chain movement direction, pull chain to move right, due to leverage, articulating point 14 obtains a much bigger power, meanwhile, power bar 10 compresses all rhombuses again, power bar 10 obtains the decrement of all rhombus joints, therefore power bar 10 can be walked with chain the stroke of a plurality of rhombus joints, the amount of work done is larger.Certainly, the active force that connecting rod 4 gives power bar 10 changes, and when bent axle forwards 180 ° of another sides to, it is thrust that connecting rod 4 gives power bar 10, equally after leverage, chain obtains thrust, and this power is skidded sprocket wheel, and power bar 10 stretches all rhombus joints simultaneously, drive chain to return to as far as possible the position of preparation work done, so within one 360 ° cycles, the work done of chain pulling chain wheel once, is return once.

From structure, the power that promotes chain does not only have weakened, on the contrary because leverage is strengthened, thereby strengthened the moment of torsion of sprocket rotation, even if the former power of turning crankshaft is a little power, also can on the other end sprocket wheel of transmission, obtain a larger torque force, this is that the structure of this programme is brought, thereby has improved widely the mechanical efficiency of transmission.

Claims

1. a transmission device, the driving mechanism that has some serial connections, in each driving mechanism, there are one group and the fourbar linkage connecing and the bent axle (1) being attached thereto, a crank throw (3) of (4) one end of the connecting rod in each fourbar linkage and bent axle is movably connected, one end is flexibly connected a power bar (10), one more piece parallelogram expansion device is set, more piece parallelogram expansion device one end and frame are hinged, the other end and a ring chain device are hinged, described ring chain device and a group switching centre are apart from the sprocket engagement separating, the gyration center of one of them sprocket wheel is equipped with overrunning clutch, to assigned direction transmitting torque, it is characterized in that: power bar (10) one end and connecting rod (4) are hinged, one end is connected with more piece parallelogram expansion device joint wherein, form three articulating points (12), (13), (14), one section of limit that forms first rhombus (15) between articulating point in three articulating point neutral positions (13) and end articulating point (14), in the first rhombus, end on the rhombus limit relative with vertical rod (10) and ring chain are hinged, between the articulating point in neutral position (13) and another articulating point (12), form a limit of second rhombus (16), power bar (10) is hinged with a limit that forms Three Diamond (21) by another articulating point (12), the one end on a limit of Three Diamond (21) and frame have an articulating point (22).

2. a kind of transmission device according to claim 1, it is characterized in that: have one guide locating device provided, be included in articulating point (14), (23), (24) rolling bearing (25) is respectively housed on the axle of locating, rolling bearing (25) is packed in guide groove (26).