CN2429689Y

CN2429689Y - Planetary stepless speed variator without arbor

Info

Publication number: CN2429689Y
Application number: CN 00241752
Authority: CN
Inventors: 陈金龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-06
Filing date: 2000-07-06
Publication date: 2001-05-09
Anticipated expiration: 2010-07-06

Abstract

The utility model relates to a planetary wheel stepless speed change device without a physical center shaft and adopts a simply supported beam type rigid rotating arm of a load balancing ring. Guide wheels are movably sheathed on a rotating arm of a pin shaft and are uniformly distributed and separated from the periphery of a planetary wheel; when the speed of two driving wheels, the speed of a moving screw pair and the speed a worm and gear are regulated, the two driving wheels, the moving screw pair and the worm and gear do connecting and disconnecting movement in an axial direction to drive the planetary wheel to be jostled inwards or to be jostled out of working faces of two outer rings in a radial direction. Because a disk spring is directly and tightly pressed on outer rings, pressing force and torque moment increase and reduce in direct proportion; the variable speed ratio of the working radius of the planetary wheel form a middle point to an outer margin increases, and an output rotating speed reaches 0 to input rotating speed; friction resistance is reduced, speed regulation is convenient, when the utility model is stopped or is operated, the efficiency of speed regulation increases; the utility model has the advantages of easy manufacture, convenient manufacture and integral performance and the utility model is a speed change device which can realize the high efficiency of manufacture and the high efficiency of use.

Description

No physics axle planetary stepless variator

This is novel to relate to a kind of planetary mechanical stepless transmission does not especially have physics axle planetary stepless variator (hereinafter to be referred as speed changer).

The variation of the rolling element speed governing displacement radius of clean-up realized stepless change in the middle of planetary bevel-type class stepless speed variator adopted, and common planet wheel has axle and plays pivoted arm and transmit switch cabinet to output shaft.The axle restricted diameter is in the size of intensity and gear ratio and have influence on the frictional resistance and the speed adjusting performance of planet wheel displacement, and it is lower to make difficult precision.Torque contradicts with the pressurization characteristic of impacting force during planetary bevel-type stepless speed variator (JB/T6950-93) speed change, and the high velocity impacting force increases heating greatly; The low velocity zone impacting force reduces torque allowable and efficient is very low.

This novel purpose provides a kind of no physics axle planetary stepless variator, have simply supported beam and all carry ring rigidity pivoted arm and dish spring and directly be pressed on the mobile outer shroud, speed governing operation piece such as driving wheel and worm and worm gear and screw pair connect to be done axially the initiatively relevant radius of clean-up variation of deciliter mobile realization and carries out stepless change.Because the impacting force of dish spring is consistent with the rotational speed and torque variation, selecting for use of planet wheel half angle of wedge is unrestricted, shuts down and turns round and all can adjust.

This novel purpose is to realize like this, one group is not had physics axle planet wheel geometric shape is water chestnut taper, steel ball or other rolling elements, inner by two energy deciliter mobile driving wheel clampings on input shaft, the outer end is squeezed between two outer shroud work conical surfaces, it moves outer shroud and is directly compressed all the time by disc spring pressing power, the public time rotational of planet wheel must guide wheel, bearing pin and the composition thereof of transmission on its circle distribution compartment the freely-supported beam type all carry ring and constitute the rigidity pivoted arm, the output torque.Because driving wheel is controlled by handwheel with moving to connect on axle sleeve again with spiral and worm gear pair.Because the no physics axle planet wheel radius of clean-up reaches full radius,, improves variable so enlarging speed ratio.Because the frictional resistance loss of nothing " slide block " etc. is adjusted easily sensitive.When rotating handwheel mobile seat drive pinch roller is axially drawn close to another active crop rotation, spacing reduces to move outside the planet crop rotation radially, the outer end is got between two outer shroud Drawing cones once again, pass movably outer shroud compact disc spring once again, impacting force increases, this turns square to low speed just, and to increase the increase of required impacting force consistent, realized complete permanent power transmission.To high velocity modulation: compress crop rotation and axially remove, spacing increases, and planet wheel mobile outer shroud under dish spring active force is drawn close fixedly outer shroud, moves in the planet crop rotation radially, and rotating speed raises, and impacting force reduces, and heating and loss reduce establishes the rate raising.Owing to there is not the frictional resistance between these axostylus axostyle slide blocks and the chute, the formed effect of centrifugal force that the public rotation of planet wheel produces is also more obvious, helps raising the efficiency and improving speed adjusting performance.

Below in conjunction with drawings and Examples to this novel further specifying.

Fig. 1 is no physics axle planetary stepless variator simple type structure.

Fig. 2 is that no physics axle planetary stepless variator simply supported beam all carries the ring type structure.

Fig. 3 is the circle distribution station structure of driving shaft, driving wheel, planet wheel, guide wheel, bearing pin pivoted arm and outer shroud.

Among Fig. 1: 1, no physics axle planet wheel (abbreviation planet wheel) 2, input shaft 3, driving wheel 4, dish spring 5, pinch roller 6, all carry ring 7, bearing 8, fixedly outer shroud 9, bearing pin pivoted arm (abbreviation bearing pin) 10, guide wheel 11, needle roller 12, mobile outer shroud 13, speed regulating mechanism 14, output shaft 15, end cam 16, middle 17, end cap.

As shown in Figure 1: input shaft 2 connect driving wheels 3 and with pinch roller 5 at dish spring 4 compression clamping planet wheels 1, the other end is subjected to fixedly outer shroud 8 and moves the outer shroud 12 public rotation of the folded tight generations of the conical surface of working at end cam 15.Between planet wheel 1 circle distribution across with the guide wheel 10 of quantity and by needle roller 11 moving be assigned in make on the bearing pin 9 bearing pin 9 together with all carry ring 6, output shaft 14 revolves round the sun synchronously.All carry ring 6 and constitute the rigid unitary simply supported beams, all carry ring 6 cylindricals and be assemblied in the bearing 7 and go slick by bearing pin 9 and output shaft 14.The pivoted arm transmitting torque radial position of only revolving round the sun is constant, so do not hinder the speed governing displacement of planet wheel 1.0 from the center of the radius of clean-up of planet wheel 1 is to the outer rim radius, so speed ratio enlarges.

Among Fig. 2: 1, handwheel 2, flange 3, axle sleeve 4, guide rod 5, move seat 6, worm gear 7, worm screw 8, middle seat 9, fixedly outer shroud 10, bearing 11, all carry encircle 12, mobile pinch roller 13, guide wheel 14, needle roller 15, planet wheel 16, driving wheel 17, output shaft 18, mobile outer shroud 19, bearing pin 20, indicating graduation plate 21, dish spring abutment 22, dish spring 23, seal ring 24, end cap

Among Fig. 2: the pinch roller 12 that screw pair made mobile seat 5 drives be connected by bearing when handwheel 1 worm screw 7 worm gears 6 rotated is made deciliter mobile planet wheel 15 that impels with respect to driving wheel 16 and is done radial displacement (with axial), outwards transfer speed of planet wheel footpath is slack-off when drawing close, the outer end is clamp-oned in the working surface of two outer shrouds once again and is pushed mobile outer shroud 18 open and makes dish spring decrement increase impacting force together with dish spring abutment 21 to increase, this turns square to the slow-speed of revolution just and increases required impacting force, and both are directly proportional.Big between then opposite driving wheel 16 of handwheel backward rotation and the pinch roller 12 apart from change, planet wheel is done the footpath in the working surface pushing of disc spring force by two outer shrouds and is inwardly moved, rotating speed raise and impacting force to reduce this be that high rotating speed only needs less impacting force to reach loss and heating reduces the efficient raising.No physics axle planet wheel 15 does not make speed governing light laborsaving because do not exist the friction of " slide block " and output shaft " chute " to hinder during outer displacement in radially, and the radius of clean-up increases speed adjustable range and enlarges, and reaches 0～n1r/min (input shaft rotating speed).

Among Fig. 3: 1, guide wheel 2, bearing pin 3, no physics axle planet wheel 4, input shaft (driving shaft) 5, driving wheel (maximum working radius) 6, profile (the minimum radius of clean-up)

Among the figure: guide wheel 1 is moving to be assigned on the bearing pin 2 and to be distributed in to rise between the circumference of each planet wheel 3 and accept public rotation transmitting torque at interval and exported by output shaft.Two driving wheels 5 and two outer shrouds 6 constitute axially with radially limit planet wheel 3 move freely (working surface contacts stressed) and each guide wheel limits the circle distribution of planet wheel and revolves round the sun stable.Driving wheel deciliter with axially the moving of the displacement of planet wheel and outer shroud, impacting force and the torque complete permanent power transmission of realization that is directly proportional all the time apart from corresponding generation synchronously.Speed governing is light, shut down flexibly and turn round in can the speed governing slewing range enlarge efficient and improve and make general precision of easy frock and technical performance and utilization benefit and increase substantially.

Claims

1, a kind of no physics axle planetary stepless variator, have planet wheel, driving wheel, outer shroud, dish spring and output mechanism, it is characterized in that not having physics axle planet wheel the inner is clamped in by worm gear and screw pair drive work axial initiatively between deciliter two mobile driving wheels, the outer end is clamped in two outer shroud working surfaces that directly compressed by the dish spring, circle distribution the guide wheel with number such as planet wheel, guide wheel is assigned on the bearing pin so that needle roller is moving, and the bearing pin two ends are fastened on respectively and constitute freely-supported beam type rigidity pivoted arm in the pin-and-hole that all carries ring and output shaft.

2, speed changer according to claim 1 is characterized in that planet wheel is the middle rolling element of no physics axle.

3, speed changer according to claim 1 is characterized in that each planet wheel circle distribution is all distributing at interval with the guide wheel of quantity, and guide wheel is assigned on the bearing pin so that needle roller is moving, and bearing pin two ends close-fitting constitutes the rigid unitary pivoted arm in the pin-and-hole that all carries ring and output shaft.

4, speed changer according to claim 1 is characterized in that all carrying the ring cylindrical and is assemblied on the bearing, and bearing is connected fixedly on the outer shroud.

5, speed changer according to claim 1, it is characterized in that pinch roller and move movable a connection that move seat by screw pair and worm and gear interlock, two axial deciliter of crop rotations of active move distance during adjustment, the working surface spacing increases and decreases, and planet wheel is promptly done radial displacement.

6, speed changer according to claim 1 is characterized in that the dish spring directly is pressed on the mobile outer shroud, and the awl wedge was got into and forced between the working surface of two outer shrouds that mobile outer shroud is axially outer to be moved when planet wheel footpath was outwards moved, and the dish spring is compressed impacting force and increases.

7, speed changer according to claim 1 is characterized in that the mobile seat (both screw pairs) that connects pinch roller is enclosed within on one group of pin, does axial displacement, and makes pinch roller with respect to driving wheel deciliter spacing increase and decrease when worm gear rotates.