CN111434951A - Double-inner-gear-ring planet-row speed reducer capable of reducing abrasion and prime numbers - Google Patents

Abstract

The invention relates to an anti-abrasion prime number double-inner-gear-ring planet row speed reducer which consists of an anti-abrasion prime number double-inner-gear-ring planet row, an input end, an output end and a locking end. The anti-abrasion prime number double-inner-gear-ring planet is provided with a left-side inner gear ring, a right-side inner gear ring and a planet carrier with a variable-line-speed planet wheel. The left planet wheel and the right planet wheel are connected to form each variable line speed planet wheel. The left planet wheel is meshed with the left inner gear ring, and the right planet wheel is meshed with the right inner gear ring. The planet carrier is connected with the input end, one inner gear ring is connected with the output end, and the other inner gear ring is connected with the locking end; by providing the number of teeth of each gear in one of the 220 combinations of teeth of each gear, a reduction gear with reduced wear in operation can be formed with a corresponding left gear ratio Cz or right gear ratio Cy.

Description

Double-inner-gear-ring planet-row speed reducer capable of reducing abrasion and prime numbers

Technical Field

The invention relates to the technical field of planetary row transmission equipment, in particular to a reducer which is provided with an anti-wear prime number double-inner-gear-ring planetary row and specifically defines the combination of gear teeth of each gear.

Background

The common planet row comprises three parts, namely a sun gear, an inner gear ring and a planet carrier with planet gears. The abrasion-loss-reducing prime number double-inner-ring planetary row is provided with three parts, namely a left inner ring gear, a right inner ring gear and a planet carrier with variable-speed planet gears, wherein each variable-speed planet gear comprises a left planet gear and a right planet gear, namely the left planet gear is connected with the right planet gear to form each variable-speed planet gear; when the rotating speeds of the left planet wheel and the right planet wheel are the same and are not zero, the reference circle linear speeds of the left planet wheel and the right planet wheel are different; the left planet wheel is meshed with the left inner gear ring, the right planet wheel is meshed with the right inner gear ring, and the left inner gear ring is not meshed with the right inner gear ring. The planet carrier is connected with the input end, one inner gear ring is connected with the locking end, the other inner gear ring is connected with the output end, and the double-inner-gear-ring planet row with the abrasion-reducing prime number can be used as a speed reducer. However, each anti-wear prime number double-inner-gear-ring planet row is not a speed reducer according to the input and output locking connection method, and a certain condition of cooperation of tooth arrays of all parts is required, namely the specific speed reducer can be formed only by specifically determining the combination of the tooth arrays of all parts. In the speed reducer, the tooth array combination of each gear is accurately arranged, so that the abrasion of the speed reducer during operation is reduced, and the speed reducer is called an abrasion-reducing prime number double-inner-gear-ring planetary-row speed reducer.

Disclosure of Invention

The invention aims to specifically and definitely reduce the gear tooth combination of each gear of a dual-inner-gear-ring planet-row speed reducer with a prime number in a list form, wherein the total number of the gear tooth combinations is 220, so that the abrasion of the speed reducer during operation is reduced. The gear tooth combination of 220 kinds of gear teeth provided by the invention is completely different from the gear tooth combination of 240 kinds of gear teeth in the 'double-inner-gear-ring planet-row speed reducer' invented by the inventor.

The double-inner-gear-ring planet row speed reducer comprises an anti-wear prime number double-inner-gear-ring planet row, an input end, an output end and a locking end. The double-inner-gear-ring planet row with the abrasion loss reducing prime number comprises a left inner gear ring, a right inner gear ring and a planet carrier with a variable-line-speed planet wheel; each variable line speed planet wheel on the planet carrier comprises a left planet wheel and a right planet wheel, namely the left planet wheel is connected with the right planet wheel to form each variable line speed planet wheel; the left planet wheel is meshed with the left inner gear ring, the right planet wheel is meshed with the right inner gear ring, and the left inner gear ring is not meshed with the right inner gear ring. The input and output locking connection method of the abrasion-reduction prime number double-inner-gear-ring planet row as the speed reducer comprises the following steps: the planet carrier is connected with the input end, one inner gear ring is connected with the output end, and the other inner gear ring is connected with the locking end. The connection is realized by a mechanical connection device, so that the rotating speeds of the two parts are completely the same. Parameters such as the tooth number, the gear module and the reference circle diameter of the left planet gear and the right planet gear are not required to be the same, and parameters such as the tooth number, the gear module and the reference circle diameter of the left inner gear ring and the right inner gear ring are not required to be the same. The number of the variable-speed planetary gears is not less than two, and usually two, three, four or more (the number of the variable-speed planetary gears is not less than two, usually two, three, four or more). When the rotating speeds of the left planet wheel and the right planet wheel are the same and are not zero, the reference circle linear speeds of the left planet wheel and the right planet wheel are different. The planet carrier and the variable-line-speed planet wheel are in a relation that one is a shaft and the other is a bearing; in fig. 1, 3 the planet carrier is schematically shown as a bearing and the variable speed planet is shown as an axle; in fig. 2, 4 the carrier is shown as a shaft and the variable speed planetary gear is shown as a bearing.

The anti-abrasion prime number double-inner-gear-ring planetary row can be used as a speed reducer by adopting the input and output locking connection method, but each anti-abrasion prime number double-inner-gear-ring planetary row is not necessarily a speed reducer. The reducer needs a certain condition, wherein the combination of the teeth of each gear needs to be specially arranged, and the specific reducer can be formed only by specifically determining the combination of the teeth of each gear. The invention provides 220 kinds of gear tooth array combinations, which makes two groups of engaged gears avoid concentrated abrasion and can form a speed reducer with reduced abrasion in operation.

Defining Zz as the tooth number of the left inner gear ring, Xz as the tooth number of the left planet gear, Zy as the tooth number of the right inner gear ring, and Xy as the tooth number of the right planet gear; when the planet carrier is connected with the input end, the right annular gear is connected with the locking end, and the left annular gear is connected with the output end, the transmission ratio of the speed reducer is a left transmission ratio Cz, wherein Cz is 1/(1- (Zy Xz/Zz Xy)); fig. 1 and 2 show such an input/output locked connection method. When the planet carrier is connected with the input end, the left inner gear ring is connected with the locking end, and the right inner gear ring is connected with the output end, the transmission ratio of the speed reducer is a right transmission ratio Cy which is-Cz + 1; fig. 3 and 4 show such a connection method of input/output lock. When the value of each transmission ratio is a positive value, the rotating speed of the input end is the same as the rotating speed of the output end in the direction; when the value is negative, the rotating speed of the input end is opposite to the rotating speed of the output end. And the gear tooth number combination of the gears is the numerical combination of the tooth number Zz of the left inner gear ring, the tooth number Zy of the right inner gear ring, the tooth number Xz of the left planet gear and the tooth number Xy of the right planet gear. The reduction of the wear of the reduction gear during operation is a characteristic of the combination of the teeth of the gears described below.

In the following table, in the combinations of the teeth of the gears, the numerical values of the tooth number Zy of the right ring gear are listed in the first row, the sixth row and the eleventh row, the numerical values of the tooth number Zz of the left ring gear are listed in the second row, the seventh row and the twelfth row, the numerical values of the tooth number Xz of the left planet gear are listed in the third row, the eighth row and the thirteenth row, and the numerical values of the tooth number Xy of the right planet gear are listed in the fourth row, the ninth row and the fourteenth row; the values of the left gear ratio Cz are listed in the fifth, tenth and fifteenth columns. In each row, the values in the first, second, third and fourth columns make up a set of combinations of the teeth of the gears, the fifth column being the value of its corresponding left gear ratio; the numerical values in the sixth, seventh, eighth and ninth columns form a set of combinations of the teeth of the gears, and the tenth column is the value of the corresponding left transmission ratio; the values in the eleventh, twelfth, thirteenth and fourteenth rows make up a set of combinations of the teeth of the gears, and the fifteenth row is the value of its corresponding left gear ratio. Each value for the corresponding right gear ratio can be derived from the value for the left gear ratio and is not listed in the table. The gear tooth array combination and the corresponding left transmission ratio of 220 gears are shown as the following table I:

TABLE I, GEAR COMBINATION AND CORRESPONDING LEFT-TRANSMISSION RATIO TABLE

To avoid gear undercutting, the minimum tooth count of planet gear tooth counts Xz, Xy in the upper table is not less than 17, and if the technique of avoiding undercutting is applied, the planet gear tooth count can also adopt a tooth count less than 17. In order to improve the torque efficiency in the transmission of the speed reducer, the maximum tooth number of the tooth numbers Zz and Zy of the inner gear ring in the upper table is not more than 120, and the tooth number of the inner gear ring can also be more than 120 on the occasion that the torque efficiency is not required to be very high.

The invention has the advantages that the gear tooth array combinations of 220 kinds of gear teeth of the double-inner-gear-ring planetary gear reducer with the abrasion loss reducing prime number are specifically determined in a list form, so that the abrasion of the reducer in operation is reduced. The gear teeth of one of the gear teeth are combined to form a double inner gear ring planet row, and when the planet carrier is connected with the input end, the right inner gear ring is connected with the locking end, and the left inner gear ring is connected with the output end, a speed reducer with a corresponding left transmission ratio Cz can be formed; when the planet carrier is connected with the input end, the left inner gear ring is connected with the locking end, and the right inner gear ring is connected with the output end, a speed reducer with a corresponding right transmission ratio Cy can be formed.

Drawings

FIG. 1 is a schematic structural diagram of a dual ring gear planetary reducer with abrasion-reducing prime numbers and bearings, wherein a left ring gear is connected with an output end and a planet carrier is connected with the output end;

FIG. 2 is a schematic structural diagram of a dual ring gear planetary reducer with abrasion-reducing prime numbers, which is provided by the invention, and has a left ring gear connected with an output end and a planet carrier as a shaft;

FIG. 3 is a schematic structural diagram of a double inner gear ring planet row reducer with abrasion reduction prime numbers, wherein the right inner gear ring is connected with an output end, and a planet carrier is a bearing;

FIG. 4 is a schematic structural diagram of the double inner gear ring planetary gear reducer with abrasion reduction prime numbers, which is provided by the invention, and the right inner gear ring is connected with the output end and the planet carrier is a shaft;

in each figure: 1 is left side ring gear, 2 is right side ring gear, 3 is the planet carrier, 4 is left side planet wheel, 5 is right side planet wheel, 6 is the input, 7 is the output, 8 is the locking end.

In the figure: conventionally, each planet row is indicated by a half-frame structural diagram, each part only indicates the connection and structural relation, and the actual size is not reflected; the input terminal is indicated by an input arrow, the output terminal by an output arrow, and the latch terminal by a ground symbol.

Detailed Description

Example 1:

the abrasion-reduction prime number double-inner-gear-ring planet row speed reducer in the figure 1 comprises an abrasion-reduction prime number double-inner-gear-ring planet row, an input end (6), an output end (7) and a locking end (8). The double-inner-gear-ring planet row with the abrasion-reducing prime number comprises a left inner gear ring (1), a right inner gear ring (2) and a planet carrier (3) with a variable-speed planet wheel; each variable-line-speed planet wheel on the planet carrier (3) comprises a left planet wheel (4) and a right planet wheel (5), namely the left planet wheel (4) is connected with the right planet wheel (5) to form each variable-line-speed planet wheel; the left planet gear (4) is meshed with the left inner gear ring (1), the right planet gear (5) is meshed with the right inner gear ring (2), and the left inner gear ring (1) is not meshed with the right inner gear ring (2). The input and output locking connection method of the abrasion-reduction prime number double-inner-gear-ring planet row as the speed reducer comprises the following steps: the planet carrier (3) is connected with the input end (6), one inner gear ring is connected with the output end (7), and the other inner gear ring is connected with the locking end (8). The connection is realized by a mechanical connection device, so that the rotating speeds of the two parts are completely the same. Parameters such as the tooth number, the gear module and the reference circle diameter of the left planet gear (4) and the right planet gear (5) are not required to be the same, and parameters such as the tooth number, the gear module and the reference circle diameter of the left inner gear ring (1) and the right inner gear ring (2) are not required to be the same. In the embodiment, the number of the variable-speed planetary gears is four (the number of the variable-speed planetary gears is four). When the left planet wheel (4) and the right planet wheel (5) have the same rotating speed and are not zero, the reference circle linear speeds of the left planet wheel and the right planet wheel are different. The planet carrier (3) and the variable-speed planet wheel are in a relation; the planet carrier (3) is a bearing, and the line speed changing planet wheel is a shaft.

The double-inner-gear-ring planet row with the abrasion-reducing prime number adopts the input and output locking connection method as a speed reducer, wherein the combination of the gear teeth needs to be specially arranged, so that the abrasion of the speed reducer during operation is reduced. Setting Zz as the tooth number of the left inner gear ring, Xz as the tooth number of the left planet gear, Zy as the tooth number of the right inner gear ring, and Xy as the tooth number of the right planet gear; in this embodiment, the combination of the gear teeth is a combination of values of a set of gears in which the left ring gear tooth number Zz is 68, the right ring gear tooth number Zy is 50, the left planet gear tooth number Xz is 23, and the right planet gear tooth number Xy is 17. When the planet carrier (3) is connected with the input end (6), the right annular gear (2) is connected with the locking end (8), and the left annular gear (1) is connected with the output end (7), the transmission ratio of the speed reducer is left transmission ratio Cz, wherein Cz is 1/(1- (Zy Xz/Zz Xy)) ═ 192.67; fig. 1 shows a reducer according to the present embodiment.

The working motion relation of the speed reducer is that when the right side inner gear ring (2) is locked, the rotation direction of the planet carrier (3) is the same as the rotation direction of the left side inner gear ring (1).

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. The abrasion-reduction prime number double-inner-gear-ring planet row speed reducer is characterized by comprising an abrasion-reduction prime number double-inner-gear-ring planet row, an input end, an output end and a locking end; the double-inner-gear-ring planet row with the abrasion loss reducing prime number comprises a left inner gear ring, a right inner gear ring and a planet carrier with a variable-line-speed planet wheel; each variable line speed planet wheel on the planet carrier comprises a left planet wheel and a right planet wheel, namely the left planet wheel is connected with the right planet wheel to form each variable line speed planet wheel; the left planet gear is meshed with the left inner gear ring, the right planet gear is meshed with the right inner gear ring, and the left inner gear ring is not meshed with the right inner gear ring; the input and output locking connection method of the abrasion-reduction prime number double-inner-gear-ring planet row as the speed reducer comprises the following steps: the planet carrier is connected with the input end, one inner gear ring is connected with the output end, and the other inner gear ring is connected with the locking end; parameters such as the tooth number, the gear module, the reference circle diameter and the like of the left planet gear and the right planet gear are not required to be the same, and parameters such as the tooth number, the gear module, the reference circle diameter and the like of the left inner gear ring and the right inner gear ring are not required to be the same; the number of the variable-speed planetary gears is not less than two (the number of the variable-speed planetary gears is not less than two); the planet carrier and the variable-line-speed planet wheel are in a relation that one is a shaft and the other is a bearing; the input and output locking connection method adopted by the anti-abrasion prime double-inner-gear-ring planet row can be used for forming a specific speed reducer only by specifically determining the combination of the gear teeth of each gear; the invention provides a total of 220 gear tooth array combinations of various gears, which can form a corresponding specific speed reducer with reduced abrasion in operation; defining Zz as the tooth number of a left side inner gear ring, Xz as the tooth number of a left side planet gear, Zy as the tooth number of a right side inner gear ring, and Xy as the tooth number of a right side planet gear, wherein the transmission ratio of the speed reducer is a left transmission ratio Cz when the planet carrier is connected with the input end, the right side inner gear ring is connected with the locking end, and the left side inner gear ring is connected with the output end, and the Cz is 1/(1- (Zy x Xz/Zz x Xy)); the numerical combination of the tooth number combination of the gears, namely the numerical combination of the tooth number Zz of the inner gear ring on the left side, the tooth number Zy of the inner gear ring on the right side, the tooth number Xz of the planet gear on the left side and the tooth number Xy of the planet gear on the right side, and the value of the corresponding left transmission ratio are shown in a table I:

TABLE I, GEAR COMBINATION AND CORRESPONDING LEFT-TRANSMISSION RATIO TABLE

The combination of the teeth of a total of 220 gears and the corresponding left transmission ratio, optionally one of them, reduces the wear of the reducer during operation.

2. The double inner gear ring planetary reducer according to claim 1, wherein when the planet carrier is connected with the input end, the right inner gear ring is connected with the locking end, and the left inner gear ring is connected with the output end, the transmission ratio of the reducer is left transmission ratio Cz, Cz ═ 1/(1- (Zy x Xz/Zz x Xy)); when the planet carrier is connected with the input end, the left inner gear ring is connected with the locking end, and the right inner gear ring is connected with the output end, the transmission ratio of the speed reducer is a right transmission ratio Cy which is-Cz + 1.

Images