CN2078823U

CN2078823U - Pulsation stepless variable drive

Info

Publication number: CN2078823U
Application number: CN 90205760
Authority: CN
Inventors: 邬宝华; 周鸣杰
Original assignee: FISHERY MACHINE FACTORY NINGBO SEA FISHERY Co
Current assignee: FISHERY MACHINE FACTORY NINGBO SEA FISHERY Co
Priority date: 1990-04-28
Filing date: 1990-04-28
Publication date: 1991-06-12

Abstract

The utility model discloses a pulsation stepless variable drive; four groups of parallel arranged intermittent mechanisms having phase difference in 90 DEG are arranged between a main shaft and an output shaft; an eccentric guide vane is driven to rotate by the dynamic force which is input through the main shaft, and thus a cam and a connecting rod hinged with the cam are reciprocally swung; the output shaft obtains the unidirection pulsation speed rate by the torque transmission through the peach sheet of a mono-directional overrun clutch, a roller, a hexagon shaft sleeve, a pressing block and a rolling needle; the velocity modulation is conducted through positions of a hand wheel assembly, a velocity modulation screw rod and the nut control regulating ring; the swing of the connecting rod is altered, and new length proportional relation of the member is formed; thus the purpose of stepless speed regulation is realized; the variable drive has good art performance and stable velocity modulation performance, and the lowest output rotation speed can be zero.

Description

Impulse stepless gear box

Impulse stepless gear box belongs to mechanical variable-speed unit, is applicable to gearing, speed governing production line and requires speed change gear on the electromechanical equipment of speed governing.

Therefore stepless speed variator is used widely because its output speed can change continuously.The stepless speed variator of pulsed in the prior art because of its constructional nonsymmetry reason, causes technology capability poor.Be difficult to reach degree of precision, influenced the smoothness of operation of free wheel device, cause low speed when output pulsation nonuniformity big, need can not to be adapted to pulsating nature little in, the transmission occasion of the wide linear speed regulation of low speed output and speed adjustable range.

The purpose of this utility model is to provide a kind of good manufacturability, big, the minimum output speed of slewing range to can be zero, the stable impulse stepless gear box of speed adjusting performance for fear of deficiency of the prior art to society.

Embodiment of the present utility model is between input main shaft and output shaft four groups of parallel plane indexing mechanisms arranged side by side that 90 ° of phase differences are arranged each other to be housed, the four phase bent axles that make the input main shaft have 90 ° in phase place, make connecting rod swing by rotatablely moving of curve, main-shaft torque is passed to the free wheel device of output shaft.The realization of speed governing is to drive the speed governing screw mandrel by the handwheel assembly to rotate, and the speed governing nut is moved vertically, thereby makes the oscillating bar assembly control speed ring position change connecting rod amplitude of oscillation reach the speed governing purpose.The moving of driving mechanism is to import main shaft by motoring eccentric guide card is rotated, thereby drive cam and hinged with it connecting rod are made reciprocally swinging, via the effect force-closed and mono-directional overrun clutch that geometry seals, make output shaft become unidirectional pulsation and rotate.

Press the impulse stepless gear box of the utility model design, mono-directional overrun clutch adopts the transmitter of the hexagonal axis cover of symmetrical configuration as outputting axial power, good manufacturability, be convenient to processing and measurement, guarantee precision easily, thereby make speed adjusting performance stable, its slewing range can reach 0～360 rev/min, and promptly minimum output speed can be zero.

Description of drawings.

Fig. 1 is the utility model structural representation.

Fig. 2 is that the A of Fig. 1 is to view.

Fig. 3 is the B-B sectional view of Fig. 1.

Followingly describe in further detail according to above-mentioned accompanying drawing.

Impulse stepless gear box (referring to Fig. 1-3) is made of speed regulating mechanism, driving mechanism and mono-directional overrun clutch.

Speed regulating mechanism connects the speed governing screw mandrel 17 of two supports on speed-regulating rack 16,20 by handwheel assembly 15, speed governing nut 18 is meshed with speed governing screw mandrel 17, drive 17 rotations of speed governing screw mandrel by rotating handwheel assembly 15, through power screw speed governing nut 18 is moved vertically, just do oscillating motion with speed governing nut 18 rocker assemblies 19 that link to each other, that have piston structure, the diverse location of speed ring 23 has been controlled in its swing, thereby make connecting rod 22 change the amplitude of oscillation, form length ratio relation new between member and the purpose of realization stepless speed regulation.

Driving mechanism is the bent axle slotted link mechanism, its input main shaft 1 two ends are supporting with casing 13 upper bearing (metal)s 5, on square tenon (8 * 8) structure of main shaft 18 pairs of eccentric guide cards 21 that separate a segment distance with packing ring 2 are housed, it is one group with the Second Mate and is mutually 90 ° of phase configuration, the outer suit of each guide card cam 3, both sides are folded by eccentric catch 4, and an end of each cam 3 and Second Mate's connecting rod 22 separately is articulated and connected by copper rivet.The power of main shaft 1 is by motoring, and its rotation drives eccentric guide card 21 and rotates in the circle in cam 3, because the wobbler action of eccentric guide card 21 converts the reciprocally swinging of cam 3 to, and the adjusting of cam 3 pendulum angles realizes by speed ring 23.

Mono-directional overrun clutch is to be used for the reciprocally swinging of bent axle slotted link mechanism is converted to the element of unidirectional pulsation output ripple speed in the pulsation speed variator.It is by getting in touch in aggregates with being articulated and connected of connecting rod 22 with driving mechanism.The peach sheet 10 of mono-directional overrun clutch is one group with the Second Mate equally, and to be mutually 90 ° of phase configuration corresponding with the configuration phase of eccentric guide card 21, the other end of each peach sheet 10 same Second Mate's connecting rod 22 separately is articulated and connected by copper rivet, the clutch body 11 that contains three groups of springs 25 and roller 24 is housed in each peach sheet 10, roller 24 is positioned at the angle of wedge of clutch body 11, in the hexagonal endoporus of clutch body 11 hexagonal axle sleeve 26 is housed, it is connected with output shaft 12 Spielpassung on being bearing in casing 13 bearings at both ends 14, and the end that stretches out of hexagonal axle sleeve 26 is equipped with the briquetting 8 of band half slot and is positioned at half slot and inserts the needle roller 7 of output shaft 12.

When peach sheet 10 is accepted the to-and-fro motion of transmitting from connecting rod 22 and when going to (counterclockwise or clockwise), roller 24 is stayed in clutch body 11 angles of wedge by

peach sheet

10 and 26 embeddings of hexagonal axle sleeve, so the transmission of power of output shaft 12 by roller 24 obtains reverse or forward rotate through hexagonal axle sleeve 26, briquetting 8, needle roller 7.When peach sheet 10 is replied, roller 24 pressure springs 25 make and oneself can freely roll in the angle of wedge of clutch body 11, at this moment peach sheet 10 returns with regard to free pendulum, hexagonal axle sleeve 26 does not turn round, but because four groups of peach sheets 10 are to be mutually 90 ° of phase configuration, be the many covers mechanism that abreast-type is arranged, the power that can obtain continuously pulsing makes output shaft 12 do unidirectional pulsating nature rotation thereby this just makes hexagonal axle sleeve 26.

On the hexagonal axle sleeve 26 of the present utility model the overburdening protective gear is housed; promptly an end and briquetting 8 adjacents at hexagonal axle sleeve 26 are equipped with one group of saddle shaped washer 9; its quantity depends on the needs; the design selects 7 for use, when output shaft 12 overworks, and saddle shaped washer 9 compression yields; needle roller 7 breaks away from briquetting 8 half slots; at this moment output shaft 12 is motionless, and the protection mechanism safety effect is played in 26 idle running of hexagonal axle sleeve.

The external part of the utility model main shaft 1 and output shaft 12 all is equipped with outside framework oil seal 6, prevents oil liquid leakage.

Claims

1, a kind of by speed regulating mechanism, driving mechanism, the impulse stepless gear box that mono-directional overrun clutch constituted, speed regulating mechanism is that handwheel assembly (15) connects two supports in speed-regulating rack (16), (20) the speed governing screw mandrel (17) on, speed governing nut (18) is meshed with speed governing screw mandrel (17), link to each other with speed governing nut (18), the rocker assembly (19) that has piston structure is connecting speed ring (23) and connecting rod (22): the input main shaft (1) of driving mechanism is by motoring, its two ends are supporting with the bearing (5) on the casing (13), 8 pairs of eccentric guide cards (21) that separate a segment distance with packing ring (2) are housed on the square tenon of main shaft (1), it is one group with the Second Mate and is mutually 90 ° of phase configuration, the outer suit of each guide card cam (3), both sides are folded by eccentric catch (4), one end of each cam (3) and Second Mate's connecting rod (22) separately is articulated and connected by copper rivet and it is characterized in that mono-directional overrun clutch is by in aggregates with the driving mechanism contact with being articulated and connected of connecting rod (22), its peach sheet (10) is one group with the Second Mate equally, and to be mutually 90 ° of phase configuration corresponding with the configuration phase of eccentric guide card (21), the other end of the same Second Mate's connecting rod (22) separately of each peach sheet (10) is articulated and connected by copper rivet, the clutch body (11) that contains three groups of springs (25) and roller (24) is housed in each peach sheet (10), roller (24) is positioned at the angle of wedge of clutch body (11), hexagonal axle sleeve (26) is housed in the hexagonal endoporus of clutch body (11), it is connected with output shaft (12) Spielpassung on being bearing in casing (13) bearings at both ends (14), and the end that stretches out of hexagonal axle sleeve (26) is equipped with the briquetting (8) of band half slot and is positioned at half slot and inserts the needle roller (7) of output shaft (12).

2, impulse stepless gear box as claimed in claim 1 is characterized in that on the hexagonal axle sleeve (26) adjacent with briquetting (8) one group of saddle type pad (9) being housed.

3, impulse stepless gear box as claimed in claim 1 is characterized in that the external part of main shaft (1) and output shaft (12) all is equipped with outside framework oil seal (6).