CN102322505A

CN102322505A - High-mechanical-efficiency driving device

Info

Publication number: CN102322505A
Application number: CN201110161209A
Authority: CN
Inventors: 覃国君
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2012-01-18
Anticipated expiration: 2031-06-14
Also published as: CN102322505B

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

The transmission device that a kind of mechanical efficiency is high

Technical field

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

Technical background

The transmission efficiency that improves machinery as far as possible is that engineering circle is pursued.The Chinese invention patent application, application number 201010189496.3, name is called " self-driven type unpowered vehicle that can increase the rocking bar pivot angle "; A kind of technological scheme is provided on the basis of application number 200810044287.2 patent applications, has comprised the transmission devices of some groups of serial connections, one group and the fourbar linkage that connects have been arranged in each transmission device; Said fourbar linkage all links to each other with a bent axle, and a crank throw of each bent axle forms the crank that a fourbar linkage connects, and crank one end links to each other with connecting rod; One cover rocker actuator is arranged; The other end of said rocker actuator and frame are movably hinged the formation oscillation center, with oscillation center as one be fixed in the arc gear wheel on the rocking bar center of rotation, arc gear wheel and an intermittently back and forth engagement of small gear; Press the direction initialization transmitting torque with the coaxial gearwheel of small gear; Said moment of torsion drives the interior bent axle of transmission device of another serial connection, the moment of torsion drive load that the afterbody transmission device forms, and its specialization is to insert between rocking bar and the connecting rod the changeable structure of length; Through stretching of this structure of connecting rod control, an end of rocking bar links to each other with this mechanism.

The changeable structure of said 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 the connecting rod; Increased the pivot angle of rocking bar, but because structural relation, cut down when the power that connecting rod gives extending means is delivered to rocking bar; So though the pivot angle of rocking bar increases; But the moment that promotes the rocking bar swing reduces, and does not reach desirable effect, so must do further to improve to such scheme.

Summary of the invention

The object of the present invention is to provide one can overcome the known technology shortcoming; To being similar to the reciprocating like this device of rocking bar bigger reciprocating stroke is arranged; And the power that promotes this device is not weakened, thereby utilizes the high transmission device of a kind of mechanical efficiency of said device work done.

Be to realize above-mentioned purpose, scheme of the present invention is: the transmission device that a kind of mechanical efficiency is high has the driving mechanism of some serial connections; One group and fourbar linkage that connects and the bent axle that is attached thereto are arranged in each driving mechanism, and connecting rod one end in each fourbar linkage and a crank throw of bent axle are movably connected, and an end flexibly connects a power bar; Its specialization is, a more piece parallelogram expansion device is set, and more piece parallelogram expansion device one end and frame are hinged; The other end and a ring chain device are hinged; The power bar links to each other with more piece parallelogram expansion device joint wherein, and forms a leverage and act on chain, and a said ring chain device and a group switching centre are apart from the sprocket engagement that separates; The gyration center of one of them sprocket wheel is equipped with overrunning clutch, to the assigned direction transmitting torque.

Adopt such scheme, expansion device is connected on the reciprocating device of being made up of chain sprocket, link to each other with expansion device to the connecting rod of force mechanisms; Directly masterpiece is used on the chain sprocket; This power can not weaken, and chain obtains bigger reciprocating stroke, makes sprocket wheel obtain big moment of torsion; Realize the raising of mechanical efficiency, thereby realized the object of the invention.

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

Description of drawings

Fig. 1 is the structural drawing of the high transmission device of a kind of mechanical efficiency;

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

Fig. 3 is embodiment 2 shrinking structure figure.

Embodiment

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

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

Like the drive part structural drawing of Fig. 2, of scheme, each crank throw 3 of bent axle links to each other with connecting rod 4 one ends 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 made up of the parallelogram of one group of serial connection constitutes, and the every limit of the parallelogram of present embodiment equates; Form rhombus, power bar 10 joins with extending means and forms rhombus wherein.Power bar 10 also has three articulating points 12,13 with extending means except that hinged with connecting rod 4; 14; Be in the articulating point 13 in three articulating point neutral positions and one section limit that forms one first rhombus 15 between the end articulating point 14, form a limit of one second rhombus 16 between middle articulating point 13 and another articulating point 12, another the relative rhombus limit 17 in first rhombus 15 is also hinged with a chain 18; Power bar 10 joins through a limit in first rhombus 15 19 and rhombus limit 17; See that from mechanical structure can regard two leverages as in effect, a lever is the fulcrum of lever with articulating point 13; The length of the power bar 10 on articulating point 13 the right is the arm of force, and the rhombus length of side between articulating point 13 and the articulating point 14 is a weighing arm; Another lever is a balance pivot with articulating point 12, and the length of the power bar 10 on articulating point 12 the right is the arm of force, is the arm of force between articulating point 12 and the articulating point 14; According to lever law, power * arm of force=weight * weighing arm obtains a power F on power bar 10 and connecting rod 4 tie points; Then on the other end articulating point 14 of power bar 10, obtain the power F ' that specific force F is much bigger, then act on limit 17 through rhombus limit 19, limit 17 will act on chain 18 through the form of F ' component; Suppose it is pulling force,, sprocket wheel 20 inhours that overrunning clutch is housed are rotated then with chain 18 pullings; Because 4 pairs of continuous power bars of connecting rod 10 periodically effect push away, and draw, so power bar 10 periodically receives pulling force or thrust; Chain 18 is drawn repeatedly or pushed away, and is alternately counter-clockwise with the sprocket wheel of chain engages, clockwise rotates; If transmitting torque during the motion of the overrunning clutch of sprocket wheel inhour skids when clockwise rotating, then sprocket wheel will pass moment of torsion off and on.

As above-mentioned, power bar 10 also forms a limit of one second rhombus 16, and 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 promptly whole extending means has an end for being fixedly hinged.

When power bar 10 passes through leverage to chain 18 working tensions; Also 16 1 Three Diamonds 21 of one second rhombus are compressed, the bar 10 working tensions stroke when chain of exerting all one's strength is longer, because expansion device is by the formed joint serial connection 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.

Generally speaking, the joint of the compression set of being made up of power bar 10 is preferably arranged in the first segment or second joint that is connected with chain, and the joint of whole compression set has three or four, is preferably three.

According to the rule of work done, merit=power that power is done multiply by distance, and distance is longer, and the merit of being done is bigger, and 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, on the axle at 24 places a rolling bearing 25 is housed respectively, and rolling bearing 25 is packed in the 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 the expansion device rolling bearing are installed, and in the guide groove 26 of packing into.

It is conspicuous adopting the working principle of such scheme device, and when bent axle rotated, its axle journal drivening rod 4 was done plane motion; If bent axle clockwise rotates, in 180 ° of scopes, connecting rod is given power bar 10 effects pulling force upwards; As previously mentioned, act on rhombus limit 17 1 pulling force at leverage lower link point 14 through rhombus limit 19, the joint of rhombus limit and chain obtains the component along the chain movement direction; The pulling chain moves right, because leverage, articulating point 14 obtains a much bigger power; Meanwhile, power bar 10 compresses all rhombuses again, and power bar 10 obtains the decrement of all rhombus joints; Therefore power bar 10 can be walked the stroke that a plurality of rhombuses save by the band chain bar, and the amount of work done is bigger.Certainly, the active force that connecting rod 4 gives power bar 10 changes, when bent axle forwards 180 ° of another sides to; It is thrust that connecting rod 4 gives power bar 10, and after leverage, chain obtains thrust equally; This power makes sprocket wheel skid, and power bar 10 stretches all rhombus joints simultaneously, drives the position that chain returns to the preparation work done as far as possible; So in one 360 ° cycles, the work done of chain pulling chain wheel is once return once.

From structure; The power that promotes chain is not only weakened, and on the contrary owing to leverage is strengthened, thereby has strengthened the moment of torsion of sprocket rotation; Even the former power of turning crankshaft is a little power; Also can on the other end sprocket wheel of transmission, obtain a bigger torque force, this is that the structure of this programme is brought, thereby has improved the mechanical efficiency of transmission widely.

Claims

1. transmission device that mechanical efficiency is high has the driving mechanism of some serial connections, and one group and fourbar linkage that connects and the bent axle (1) that is attached thereto are arranged in each driving mechanism; Connecting rod (4) one ends in each fourbar linkage and a crank throw (3) of bent axle are movably connected; One end flexibly connects a power bar (10), it is characterized in that: a more piece parallelogram expansion device is set, and more piece parallelogram expansion device one end and frame are hinged; The other end and a ring chain device are hinged; The power bar links to each other with more piece parallelogram expansion device joint wherein, and forms a leverage and act on chain, and a said ring chain device and a group switching centre are apart from the sprocket engagement that separates; The gyration center of one of them sprocket wheel is equipped with overrunning clutch, to the assigned direction transmitting torque.

2. the high transmission device of a kind of mechanical efficiency according to claim 1; It is characterized in that: power bar (10) is except that hinged with connecting rod (4); Also three articulating points (12), (13), (14) are arranged with extending means; Be in the articulating point (13) in three articulating point neutral positions and one section limit that forms one first rhombus (15) between the end articulating point (14), form a limit of one second rhombus (16) between middle articulating point (13) and another articulating point (12).

3. the high transmission device of a kind of mechanical efficiency according to claim 2 is characterized in that: the rhombus limit (17) that another in first rhombus (15) is relative is also hinged with a chain (18), and power bar (10) joins through rhombus limit (19) and rhombus limit (17).

4. the high transmission device of a kind of mechanical efficiency according to claim 2; It is characterized in that: power bar (10) also forms a limit of one second rhombus (16); Second rhombus (16) joins with a Three Diamond (21); There is an articulating point (22) on a limit (11) of Three Diamond with frame, and promptly whole extending means has an end for being fixedly hinged.

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

6. the high transmission device of a kind of mechanical efficiency according to claim 1 is characterized in that: the axle of the articulating point in the middle of the expansion device is installed rolling bearing, and in the guide groove of packing into (26).

7. the high transmission device of a kind of mechanical efficiency according to claim 2; It is characterized in that: the joint of the compression set of being made up of power bar (10) is preferably arranged in the first segment or second joint that is connected with chain; The joint of whole compression set has three or four, is preferably three.