CN113108045A

CN113108045A - Three-ring six-plate gear reducer

Info

Publication number: CN113108045A
Application number: CN202110404019.2A
Authority: CN
Inventors: 李琦
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-07-13

Abstract

The invention discloses a three-ring six-plate gear reducer which comprises an upper box body, a lower box body, an input shaft, a key, an eccentric wheel, an inner annular toothed plate, an output shaft large gear, a shaft ring and a bearing. Power is transmitted to the eccentric wheels through the input shaft, the eccentric wheels are arranged at a phase angle of 60 degrees, and the eccentric wheels rotate to drive the inner annular toothed plates to move. Six inner ring toothed plates move in turn, the reducer can more stably cross dead point positions, the inner teeth of each inner ring toothed plate and the inner ring toothed plate are meshed with the outer teeth on the large gear of the output shaft to output power, and the large gear of the output shaft outputs the power to achieve the effect of speed reduction. The speed reducer has the advantages of stable operation, small volume, large transmission ratio, long service life and the like.

Description

Three-ring six-plate gear reducer

Technical Field

The invention relates to a planetary transmission gear reducer with small tooth difference, in particular to a three-ring six-plate gear reducer.

Background

The speed reducer achieves the purpose of speed reduction by meshing a gear with a small number of teeth on an input shaft with a large gear on an output shaft, the ratio of the angular speeds of the output shaft and the input shaft is called as a transmission ratio, and the using effect of the speed reducer depends on the size of the transmission ratio.

The single-stage speed reducer with small size and large reduction ratio is generally used as a worm gear speed reducer, and in the aspect of service life, the worm gear speed reducer has large friction heat generation amount during working, the tooth surface is easy to wear, the parts need to be frequently replaced, the service life is short, and the use cost is high; the transmission friction loss of the worm gear reducer is large, and the efficiency is low.

The inner three-ring gear reducer adopts a transmission mode with small tooth difference, so that the problems of easy failure, short service life and low efficiency of the worm and gear reducer are solved. The patent application number is CN2260920 YD's ring gear reduction gear, concrete content does, its structure includes box part, input section, eccentric wheel and gear drive part, wherein, eccentric wheel and gear drive part eccentric wheel, three interior ring toothed plate and output shaft gear wheel are constituteed, adorn jointly three interior ring toothed plate in the box be 120 degrees phase angle distributions, the eccentric wheel on the input shaft drives interior ring toothed plate and rotates, interior ring toothed plate and the epaxial gear internal gearing of output export, but when one of them interior ring toothed plate passes through the dead point under two other drives at the during operation, driven stationarity still has the problem; the outer ring of the inner ring toothed plate is thin, and the problem of volatile effect still exists in long-term operation.

Based on the above, the invention designs a three-ring six-plate gear reducer to solve the above problems.

Disclosure of Invention

The invention aims to provide a three-ring six-plate gear reducer to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a six board reduction gear structures of tricyclic, includes box, lower box, bearing, input shaft, eccentric wheel, inner ring pinion rack, driven shaft, output shaft gear wheel, sealed lubrication mechanism, it is fixed that upper and lower box carries out threaded connection by bolt, flat pad, spring washer, nut, inlet port and observation window have been seted up to the box, six board reduction gear power of tricyclic is input by the input shaft.

The three-ring six-plate mechanism comprises a left-end input assembly, a right-end driven assembly and an intermediate output assembly, wherein the left-end input assembly comprises an input shaft, a left-end eccentric wheel, an input shaft collar and an input shaft bearing, the right-end driven assembly comprises a driven shaft, a right-end eccentric wheel, a driven shaft collar and a driven shaft bearing, the intermediate output assembly comprises an inner gear ring plate, an output shaft gear wheel and an output shaft bearing, the left-end eccentric wheel and the right-end eccentric wheel are identical in structure size, the bearings are used in pairs, and the six inner gear ring plate structures are identical in size.

Preferably, the left end eccentric wheel is fixedly installed on the input shaft through shaft shoulder positioning and flat key, the left end eccentric wheel and the left side inner ring hole of the inner gear ring plate are in line contact transmission between surfaces, the right end eccentric wheel is fixedly installed on the driven shaft through shaft shoulder positioning and flat key, the right end eccentric wheel and the right side inner ring hole of the inner gear ring plate are in line contact transmission between surfaces, the left end eccentric wheel and the right end eccentric wheel are respectively provided with 6, every two adjacent eccentric wheels are installed with a phase angle difference of 60 degrees in sequence, and the phase angles of the eccentric wheels are kept consistent with the phase angles of the inner gear ring plate.

Preferably, the ring holes on two sides of the inner gear ring plate are in matched transmission with the eccentric wheel, the inner gear ring in the middle is in inner-gear differential transmission with the large gear of the output shaft, and the inner gear ring plate moves by 6 plates sequentially with a phase angle difference of 60 degrees. The outer rings on two sides of the adjacent inner gear ring plates are provided with the shaft rings on the input shaft and the driven shaft for shaft fixing, so that the inner gear ring plates work at fixed positions and cannot interfere.

Preferably, the bearings are installed at the two ends of the input shaft and are in interference fit with the inner rings of the bearings, the outer ring of each bearing is in interference fit with and fixed to the upper box body and the lower box body, the eccentric wheels on the input shaft are fixed between shafts through non-standard part shaft rings, key grooves are formed in the shaft bodies of the input shaft through phase angles different by 60 degrees in sequence, and the eccentric wheels are installed on corresponding positions through flat keys in a connecting mode.

Preferably, the output shaft large gear is fixed on the output shaft through shaft shoulder positioning and a flat key, the gear module of the output shaft large gear is different from the gear module of the inner gear ring plate, and the tooth top pressure angle is increased.

Preferably, the input shaft pass through the lid with the output shaft passes through the lid and has all seted up the seal groove to install the wool felt oil blanket through the seal groove, pass through the lid with the input shaft with the sealing washer is installed to the output shaft junction, plays sealed effect jointly, prevents that lubricating oil from revealing.

By adopting the technical scheme, the invention has the following beneficial effects: compared with the traditional three-ring gear reducer, the number of the inner ring toothed plates is increased, the phase difference between the inner ring toothed plates is reduced, the defects of dead points in the four-bar mechanism are effectively reduced due to the fact that the plurality of inner ring toothed plates move in a matched mode, when one plate is located at the dead point, the rest plates continue to move to enable the inner ring toothed plate to pass through the dead point, the whole reducer is enabled to operate more stably, and transmission is enabled to be more stable; the contact time between each inner toothed ring plate and the outer gear is reduced, the loading condition of the inner toothed ring plate is relieved, the performance requirement on the inner toothed ring plate is reduced, the probability of the inner toothed ring plate breaking down is reduced, and the service life of the inner toothed ring plate is prolonged; the modulus of the output shaft gear wheel is different from the modulus of the inner teeth of the inner gear ring plate, the pressure angle is increased, the rigidity of the teeth can be increased, and the service life of the teeth is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of an assembly view of a three-ring six-plate gear reducer;

FIG. 2 is an exploded view of a three-ring six-plate gear reducer;

FIG. 3 is a schematic diagram of a three-ring configuration of a three-ring six-plate gear reducer;

FIG. 4 is a schematic diagram of three-ring motion of a three-ring six-plate gear reducer;

FIG. 5 is a structural view of an eccentric wheel in a three-ring six-plate gear reducer;

FIG. 6 is a structural view of a driving shaft in a three-ring six-plate gear reducer;

FIG. 7 is a structural view of an inner ring toothed plate of a three-ring six-plate gear reducer;

in the figure: 1. the oil injection device comprises a lower box body, 2, an eccentric wheel, 3, an input shaft gear, 4, an input shaft end shaft collar, 5, an input shaft wool felt ring, 6, an input shaft through cover, 7, an output shaft end cover, 8, an output shaft bearing, 9, an output shaft, 10, an inner gear ring plate, 11, a driven shaft end cover, 12, a driven shaft end collar, 13, an input shaft, 14, an input shaft end cover, 15, an output shaft through cover, 16, an output shaft wool felt ring, 17, an output shaft gearwheel, 18, a driven shaft bearing, 19, a driven shaft, 20, an intermediate shaft collar, 21, a driven shaft right end cover, 22, an upper box body, 23, a bolt pair, 24, an observation window cover plate, 25, an oil injection hole plug, 10-1, an inner gear ring plate left side ring hole, 3-2, an inner gear ring plate middle ring gear, 3-3 and an inner gear ring plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the three-ring six-plate gear reducer includes a four-bar mechanism composed of an input shaft 13, an eccentric wheel 2, an inner ring toothed plate 10, a driven shaft 19 and a lower case 1, a gear pair composed of the inner ring toothed plate 10 and an output shaft large gear 17, a sealed lubrication mechanism composed of an input shaft transparent cover 6, an input shaft wool felt ring 5, an output shaft transparent cover 15, an output shaft wool felt ring 16 and an oil injection hole plug 25, wherein the upper case 22 and the lower case 1 are fixed by a bolt pair 23 through threaded connection, the input shaft transparent cover 6, the output shaft end cover 7, the driven shaft end cover 11, an input shaft end cover 14, the output shaft transparent cover 15, the upper case 22 and the lower case 1 are fixed by bolts and gaskets through threaded connection, and power of the three-ring six-plate gear reducer is input by the input shaft 13.

As shown in fig. 1, 2, 5 and 6, the eccentric wheel 2 is connected with the shaft through a key to ensure that the circumferential movement of the mechanism is reliable, the shaft is fixed by an intermediate collar 20, the intermediate collar 20 is thin and has a large section, so that the eccentric wheel 2 can not be dislocated, and the inner annular toothed plate 10 can not move axially. The eccentric wheels 2 on the same shaft have a phase angle of 60 degrees in sequence, and the phase angles of the two eccentric wheels matched with the same inner annular toothed plate 10 are the same.

As shown in fig. 1, 2, 5 and 7, the input shaft 1 of the three-ring six-plate gear reducer has six keyways arranged on the shaft in order of phase angle of 60 degrees. The eccentric wheels with different key groove positions move differently to drive the inner annular toothed plate to move regularly. Six key grooves on the input shaft 1 also disperse and bear loads, so that the load of the shaft is reduced, and the shaft is safer and more reliable.

As shown in fig. 1, 2, 3 and 4, an inner ring gear plate 10 of the three-ring six-plate gear reducer is a part which is most easily damaged in the reducer, power is input from a ring hole 10-1 at an input end of the inner ring gear plate, the inner ring gear plate 10 performs circular motion, and the power is transmitted to a large gear 17 of an output shaft from an inner ring gear 10-2 at an output end of the inner ring gear plate. The motion of the inner toothed ring plate driven end ring hole 10-3 is only the driven motion formed by the driven shaft 19 and the eccentric wheel 2 together, the eccentric wheel 2, the inner toothed plate 3, the upper box 22 and the lower box 1 form a four-bar mechanism together, the multi-block inner toothed plate 10 is installed in a staggered phase mode, the four-bar mechanism can better pass through the position of a dead point, and the whole mechanism can run more stably and smoothly.

As shown in fig. 1 and fig. 2, the oil filler point has been seted up on the upper box body 22, lubricating oil can be injected into by the oil filler point, it blocks up with oil filler point stopper 25 not to use the time spent, there is the observation window on the upper box body 22, it is fixed through vice threaded connection of bolt with observation window apron 24 to go up box body 22, can look over through the observation window when looking over the inside behavior, need not unpack the reduction gear apart, install input shaft wool felt 5 between input shaft 13 and the input shaft transparent cover 6, install output shaft wool felt 16 between output shaft 9 and the output shaft transparent cover 15, can prevent that lubricating oil from revealing, two wool felt are effectual the sealed effect that has improved the reduction gear.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A three-ring six-plate gear reducer comprises: four-bar linkage that input shaft (13), eccentric wheel (2), interior ring gear board (10), driven shaft (19) and lower box (1) constitute, interior ring gear board (10) constitute gear pair and input shaft pass through lid (6), input shaft wool felt circle (5), output shaft pass through lid (15), output shaft wool felt circle (16), annotate the sealed lubrication mechanism that oil hole stopper (25) are constituteed with output shaft gear wheel (17), its characterized in that: the upper box body (22) and the lower box body (1) are fixed in a threaded connection mode through a bolt pair (23), the input shaft transparent cover (6), the output shaft end cover (7), the driven shaft end cover (11), the input shaft end cover (14), the output shaft transparent cover (15), the upper box body (22) and the lower box body (1) are fixed in a threaded connection mode through bolts and gaskets, and power of the three-ring six-plate speed reducer is input through the input shaft (13).

The circumferential motion of a mechanism is guaranteed to be reliable between the eccentric wheel (2) and the shaft through key connection, the shaft is fixed through the middle shaft collar (20), the middle shaft collar (20) is thin, the cross section is large, and the eccentric wheel (2) can be guaranteed not to be dislocated, and the inner ring toothed plate (10) can not move axially. Eccentric wheels (2) on the same shaft sequentially have a phase angle difference of 60 degrees, and the phase angles of the two eccentric wheels matched with the same inner annular toothed plate (10) are consistent.

2. A three-ring six-plate gear reducer according to claim 1, wherein: six key grooves are formed in an input shaft (1) of the three-ring six-plate speed reducer and are arranged on the shaft according to a phase angle sequence of 60 degrees. The eccentric wheels with different key groove positions move differently to drive the inner annular toothed plate to move regularly.

3. A three-ring six-plate gear reducer according to claim 1, wherein: an inner toothed ring plate (10) of the three-ring six-plate speed reducer is a part which is most easily damaged in the speed reducer, power is input from an inner toothed ring plate input end annular hole (10-1), an inner toothed plate (10) makes circular motion, and the power is transmitted to an output shaft large gear (17) from an inner toothed ring plate output end annular gear (10-2). The motion of the inner toothed ring plate driven end annular hole (10-3) is only driven motion formed by the driven shaft (19) and the eccentric wheel (2), the inner toothed plate (3), the upper box body (22) and the lower box body (1) form a four-bar mechanism, and the multi-block inner toothed plate (10) is installed in a staggered phase mode to help the four-bar mechanism to better pass through the position of a dead point.

4. A three-ring six-plate gear reducer according to claim 1, wherein: go up and seted up the oil filler point on box (22), lubricating oil can be injected into by the oil filler point, the time spent is stopped up with oil filler point stopper (25), upward there is the observation window on box (22), it is fixed through vice threaded connection of bolt to go up box (22) and observation window apron (24), can look over through the observation window when looking over the inside behavior, need not unpack the reduction gear apart, install input shaft wool felt (5) between input shaft (13) and the input shaft lid (6), install output shaft wool felt (16) between output shaft (9) and the output shaft lid (15).