CN2269498Y

CN2269498Y - Speed reducing force increasing driving device

Info

Publication number: CN2269498Y
Application number: CN 96228990
Authority: CN
Inventors: 赵全洪
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-28
Filing date: 1996-09-28
Publication date: 1997-12-03
Anticipated expiration: 2006-09-28

Abstract

The utility model relates to a speed reducing and force increasing driving device, which has the advantages of compact structure, high efficiency and large reduction ratio. The rotary motion of a source of power is converted into the rectilinear motion of a guide rod by a crank device. Inclined iron is driven by the guide rod to do the rectilinear motion, which is provided with two guide grooves which form wedge-shaped trends. The guide groove is embedded with a rolling bearing. Bearing blocks are respectively fixed to the inner wall of a box body and a slide block. The slide block carries a gear rack to do the reciprocating rectilinear motion under the push and pull of the inclined iron through the rolling bearing. The gear rack is engaged with two idler gears. The reciprocating rectilinear motion is converted into unidirectional rotation of an output shaft by the gear rack through a positive star wheel, an inverse star wheel and a pair of inversion gears. The effects of reducing speed and increasing force are achieved. The utility model is used for the transmission of heavy duty machinery with a low speed.

Description

A kind of deceleration force amplifier transmission device

The utility model relates to a kind of mechanical transmission, is mainly used in the starting mechanism of the heavy machinery of microrunning and the traffic tool such as train, mine car.

In mechanical transmission, power source can increase output torque through slowing down, to satisfy the needs of heavy load as everyone knows.Common reducing gear will be expected bigger reduction speed ratio nothing more than being made up of gear, belt wheel and friction wheel etc., and then mechanism is more numerous and more jumbled, and it is bigger to take up room, and efficient is low, and the worm gear pair transmission can obtain bigger reduction speed ratio, but transmission efficiency is lower.

The purpose of this utility model provides a kind of mechanical reduction force-amplifying transmission device, and with smaller volume, higher transmission efficiency is obtained bigger reduction speed ratio, thereby reaches bigger reinforcement effect, with energy saving, satisfies the needs of heavy-duty machinery.

For realizing above-mentioned target, the inventor has imagined following proposal, design a kind of deceleration force amplifier transmission device, the innovation main points are, it is vertical mutually to be shaped on two directions in the transmission case body inner chamber of design, and can make guide rod and slide block do straight-line guide rail respectively, having two wedges that are the wide guide groove of wedge shape trend with one places between slide block and the casing epicoele wall abreast, and make it do plane motion along the cabinets cavity wall, at least be embedded with two rolling bearings in every guide groove, bearing support is separately fixed on casing epicoele wall and the slide block, one end of wedge is hinged with connecting rod and guide rod, guide rod is hinged with the rocking bar of a crankrocker mechanism that is connected mutually with power source again, be shaped on a tooth bar in the lower end of slide block, its respectively with two gear engagement, be fixed with two gears that are meshed respectively with on empty two transmission shafts that overlap of these two gears, and a positive ratchet and an anti-ratchet, wherein be hinged on the spur wheel of top, be hinged on the anti-gear of below with the anti-ratchet of anti-ratchet combo with the positive pawl of positive ratchet combo.Rotatablely moving of power source output shaft changed the straight line motion of guide rod into by crankrocker mechanism, and by hinged connecting rod push-and-pull wedge left and right sides to-and-fro motion, because two top rolling bearing pedestals are fixed on the tank wall, so wedge pumps by the rolling bearing push-and-pull slide block in the guiding groove, tooth bar on the slide block then drives sky and is enclosed within two gears reciprocally swinging in the same way on two transmission shafts, top axle is an output shaft, when the cover of the sky above it spur wheel is swung clockwise, then the positive pawl on it clockwise rotates by positive ratchet drive output shaft, when its counter-clockwise swing, ratchet skids, inoperative, the anti-ratchet in the below that can swing in the same way works, and drives lower shaft by anti-ratchet and rotates counterclockwise, and drives the top output shaft by the left engaging gear again and turns round clockwise, then output shaft can clockwise rotate off and on, the moment of torsion that output has increased is preferably in and loads onto a flexibility on this axle and get rid of wheel, then exportable comparatively continuous moment of torsion.

This device parts are few, easy to manufacture, because the deceleration and the reinforcement ability of wedge itself are very big, and rolling bearing becomes rolling friction with sliding friction, frictional loss significantly reduces, contrast existing gear reducer, volume is little, the efficient height, and cost is low, and reduction speed ratio is big, and the heavy load machinery that is highly suitable at a slow speed uses.

Certainly, above-mentioned only is the basic structure of this programme, if want to adjust reduction speed ratio, also promptly change the reinforcement degree, except the guide groove angle of wedge that changes wedge, preferably increase the number of slide block and wedge, for example use two or two with top slide block and wedge arranged spaced, each wedge is all hinged with connecting rod and guide rod, and bearing support is separately fixed on the adjacent slide block, and tooth bar is on the slide block of below.Working principle is the same.

Following embodiment only provides general structure of the present utility model.

Fig. 1 is the basic block diagram of present embodiment;

Fig. 2 is Figure 1A-A sectional drawing.

By the linear rail 5A and the 5B that can see among the figure in casing 5 inner chambers, preferably make wedge be the guide rail 5c of plane motion in addition, be provided with two slide blocks 8 and wedge 7 in this example, two rolling bearings 6 have been embedded respectively in two guiding grooves of wedge, the wedge left end is all hinged with connecting rod 4 and guide rod 3, and guide rod 3 is hinged with the rocking bar of crank mechanism 2, crank mechanism is driven by power source output shaft 1, be shaped on tooth bar 9 on the nethermost slide block 8, it meshes with spur wheel 12 and the anti-gear 16 that sky is enclosed within on transmission shaft 13 and 17 respectively, be fixed with the gear 19 that is meshed and 18 and positive ratchet 11 and anti-ratchet 15 on the transmission shaft 13 and 17, positive pawl 10 and anti-ratchet 14 are hinged on respectively on spur wheel 12 and the anti-gear 16.Its action principle illustrates in scheme, no longer repeats herein.

Claims

1, a kind of deceleration force amplifier transmission device, be characterised in that, it has a casing (5), cabinets cavity has two directions vertical mutually, and can make guide rod (3) and slide block (8) do straight-line guide rail (5A) and (5B) respectively, there is one to have two wedges (7) that are the wide guide groove of wedge shape trend, be in abreast between slide block (8) and the casing epicoele wall, and make it do plane motion along the cabinets cavity wall, at least be embedded with two rolling bearings (6) in every guide groove, bearing support is separately fixed on casing epicoele wall and the slide block (8), one end of wedge (7) is hinged with connecting rod (4) and guide rod (3), guide rod (3) is hinged with the rocking bar of a crankrocker mechanism (2) that is connected mutually with power source (1) again, be shaped on tooth bar (9) in the lower end of slide block (8), its respectively with two gears (12), (16) be meshed, with be fixed with the gear (18) that is meshed and (19) and just ratchet (11) and anti-ratchet (15) on the transmission shaft (13) of the empty cover of these two gears and (17), be hinged on the spur wheel (12) with the positive pawl (10) of positive ratchet (11) combo, be hinged on the anti-gear (16) with the anti-ratchet (14) of anti-ratchet (15) combo.

2, transmission device according to claim 1, it is characterized in that: said slide block (8) has two at least, all accompany a wedge (7) between per two slide blocks, and it is all hinged with connecting rod (4) and guide rod (3), tooth bar (9) is on nethermost slide block, and bearing support then is separately fixed on the adjacent slide block (8).