CN105697667A - Stepless speed changing driving gear for bevel gear planetary mechanism - Google Patents

Abstract

The invention provides a stepless speed changing driving gear for a bevel gear planetary mechanism. The stepless speed changing driving gear is composed of two sets of cylindrical spiral gear driving pairs, a bevel gear planetary driving pair, a rolling bearing, two sets of input shafts and two sets of driving shafts. The first input shaft is fixedly connected with an engine. The first input shaft and a double-face end face gear are installed through the rolling bearing to achieve power input. Part of power is diverted to the first driving shaft through the first set of cylindrical spiral gear driving pair. The first driving shaft is fixedly connected with a motor, and mechanical energy is converted into electric energy to be stored. The second input shaft is fixedly connected with the motor, and electric energy is converted into mechanical energy, the mechanical energy is transmitted to an input end bevel gear through the second set of cylindrical spiral gear driving pair and the second driving shaft, and stepless speed changing is achieved by adjusting the input end bevel gear. The power of the double-face end face gear and the power of the input end bevel gear are output by an output end bevel gear. Large-driving-ratio speed reducing of a driving system under a compact structure is achieved through the bevel gear planetary driving pair, the transmission torque is large, and the bearing capability is high.

Description

A kind of bevel gear planetary mechanism infinitely variable speed transmission

Technical field

The present invention relates to a kind of gear structure variable speed drive, specifically, relate to a kind of bevel gear planetary mechanism infinitely variable speed transmission。

Background technology

At present the buncher of application is generally adopted transmission band and the variable driven wheel of working diameter matches incompatible transmission power, the continuous change of gear ratio can be realized, common buncher has belt-type and two kinds of variable v-belt drives of metal band type, but it is limited that the shortcoming of variable v-belt drive is stress, easily skid, and transmission efficiency is low。Lightweight, high power density, low noise are always up the target that actuating device is pursued, and planetary transmission mechanism for bevel gears has stable drive, compact conformation, bearing capacity is strong, life-span length, efficiency are high advantage, is a kind of rising speed reduction gearing。

Patent CN203254956U proposes a kind of electronic infinite variable speed hybrid power system, this system engine and planet carrier are connected, motor is connected with sun gear, output shaft is connected with gear ring, power is inputted respectively through planet carrier and sun gear by electromotor and motor, exported by output shaft, final driven wheel, realize infinitely variable speeds by adjusting the rotating speed of motor。This electronic infinite variable speed hybrid power system adopts planetary gears to realize infinitely variable speeds, but the resultant gear ratio of this buncher is less, causes that engine speed is high, less economical。

Patent of invention CN102230515A discloses a kind of planetary transmission mechanism for bevel gears, this planetary transmission mechanism for bevel gears includes one group of transmission or many group transmission series connection, often group transmission includes bracing frame, and on bracing frame, spacing parallel arranging is provided with two homoaxial fixed cone gears and drive bevel gear；Transmission also includes one end and rotates the main shaft being assemblied on bracing frame, and main shaft, fixed cone gear and drive bevel gear are coaxially disposed；Transmission also includes rotating the rotating shaft being assemblied on main shaft, the axis of rotating shaft and the axes intersect of main shaft and misaligned, the two ends of rotating shaft are respectively facing the flank of tooth of fixed cone gear and the flank of tooth of drive bevel gear, the two ends of rotating shaft are fixedly connected with two planetary gears being respectively used to fixed cone gear and drive bevel gear engaged transmission, main shaft is provided with on power input or outfan and drive bevel gear and is correspondingly provided with power output, or input, but this planetary transmission mechanism for bevel gears is owing to have employed outer cone meshed transmission gear, there is registration relatively low, bearing capacity is more weak, the shortcoming that the volume that takes up room is bigger。

Summary of the invention

In order to avoid the deficiency that prior art exists, the present invention proposes a kind of bevel gear planetary mechanism infinitely variable speed transmission, realized the infinitely variable speeds within the scope of relatively big speed ratio by planetary transmission mechanism for bevel gears, there is compact conformation, gear ratio is big, lightweight, bearing capacity is strong feature。

The technical solution adopted for the present invention to solve the technical problems is: include two groups of slant gear transmission secondary, bevel gear Gear Planet Transmission is secondary, rolling bearing, described first group of slant gear transmission pair includes the 3rd cylindric spiral gear, 4th cylindric spiral gear, first power shaft, first power transmission shaft, first power shaft and the first power transmission shaft are splined shaft, 3rd cylindric spiral gear, the centre bore of the 4th cylindric spiral gear is splined hole, 3rd cylindric spiral gear and the 4th cylindric spiral gear are separately mounted on the first power shaft and the first power transmission shaft, first power shaft one end is connected with electromotor, the first power shaft other end is connected by rolling bearing installation through second driving shaft with two-sided face gear, first group of slant gear transmission adjutant's Partial Power branches to the first power transmission shaft, first power transmission shaft is connected with motor, realize mechanical energy to convert electric energy to and carry out energy storage；

Described second group of slant gear transmission pair includes the first cylindric spiral gear, second cylindric spiral gear, second power shaft, second driving shaft, second power shaft and second driving shaft are splined shaft, first cylindric spiral gear, the centre bore of the second cylindric spiral gear is splined hole, first cylindric spiral gear, second cylindric spiral gear is separately mounted on the second power shaft and second driving shaft, second power shaft is connected with motor, input bevel gear and the second cylindric spiral gear are separately mounted on second driving shaft, pass through motor speed adjusting, regulate input bevel gear rotating speed, realize infinitely variable speeds；

Described bevel gear Gear Planet Transmission pair includes two-sided face gear, input bevel gear, outfan bevel gear, and two-sided face gear is meshed with input bevel gear, outfan bevel gear respectively, and outfan bevel gear is used for power output；First power shaft, outfan bevel gear, two-sided face gear, input bevel gear rotation speed relation undertaken by formula (1):

$i=\frac{{\mathrm{\ω}}_5}{{\mathrm{\ω}}_8}=\frac{1}{1-\frac{Z_{10}}{Z_{9L}}\·\frac{Z_{9R}}{Z_8}+\frac{Z_{10}}{Z_{9L}}\·\frac{Z_{9R}}{Z_8}\·\frac{{\mathrm{\ω}}_{10}}{{\mathrm{\ω}}_5}}---\left(1\right)$

In formula, i is the gear ratio of bevel gear Gear Planet Transmission stepless speed changing mechanism, ω₅It is the first power shaft rotating speed, ω₈For outfan bevel gear rotating speed, ω₉For two-sided end face gear rotational speed, ω₁₀For input bevel gear rotating speed, Z₈For outfan number of teeth in bevel gears and hypoid gears, Z_9LFor the number of teeth, Z on the left of two-sided face gear_9RFor the number of teeth, Z on the right side of two-sided face gear₁₀For input number of teeth in bevel gears and hypoid gears；

By the rotating speed that second group of slant gear transmission is secondary, the second power shaft can be obtained, the rotation speed relation of input bevel gear is undertaken by formula (2):

${\mathrm{\ω}}_{10}={\mathrm{\ω}}_3=\frac{{\mathrm{\ω}}_1{Z}_1}{Z_3}=\frac{{\mathrm{\ω}}_2{Z}_1}{Z_3}---\left(2\right)$

In formula, ω₁₀For input bevel gear rotating speed, ω₁It is the first cylindric spiral gear rotating speed, ω₂It is the second power shaft rotating speed, ω₃It is the second cylindric spiral gear rotating speed, Z₁It is the first cylindric spiral gear number of teeth, Z₃It it is the second cylindric spiral gear number of teeth；

By formula (1) and formula (2) it can be seen that when the first power shaft invariablenes turning speed, change input bevel gear rotating speed by regulating the second power shaft rotating speed, it is achieved the infinitely variable speeds of gear of output end rotating speed。

Second power shaft, the first power transmission shaft respectively with the first parallel installation of power shaft。

Beneficial effect

The bevel gear planetary mechanism infinitely variable speed transmission that the present invention proposes, is made up of two groups of slant gear transmission pairs, bevel gear Gear Planet Transmission pair, rolling bearing, two groups of power shafts, two groups of power transmission shafts。First power shaft is connected with electromotor, first power shaft and two-sided face gear are installed by rolling bearing and are realized power input, the first power transmission shaft is branched to by first group of slant gear transmission adjutant's Partial Power, first power transmission shaft is connected with motor, it is achieved mechanical energy converts electric energy to and carries out energy storage。Second power shaft is connected with motor, converts electric energy to mechanical energy and transmits to input bevel gear with second driving shaft by second group of slant gear transmission is secondary, realizes infinitely variable speeds by regulating input bevel gear；The power of two-sided face gear and input bevel gear is exported by outfan bevel gear。

Bevel gear planetary mechanism infinitely variable speed transmission of the present invention, realizes the infinitely variable speeds within the scope of relatively big speed ratio, compared with traditional variable v-belt drive by planetary transmission mechanism for bevel gears, structure is compacter, in hgher efficiency, simultaneously because not by the restriction of conveyer belt, can transmitting large torque；Compared with common planetary gear stepless speed change device, adopting planetary transmission mechanism for bevel gears, gear ratio is bigger；Compared with outer cone meshed transmission gear, adopting bevel gear and face gear engaged transmission, contact ratio and overlap ratio is bigger, and bearing capacity is higher；Relative to other stepless gearing method, by adopting electric machine speed regulation to realize the response speed of infinitely variable speeds faster；By realizing infinitely variable speeds, electromotor is made to work under the operating mode meeting fuel economy and dynamic property requirement。

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, one bevel gear planetary mechanism infinitely variable speed transmission of the present invention is described in further detail。

Fig. 1 is bevel gear planetary mechanism infinitely variable speed transmission schematic diagram of the present invention。

Fig. 2 is bevel gear planetary mechanism infinitely variable speed transmission structural blast figure of the present invention。

In figure:

1. the first cylindric spiral gear 2. second power shaft 3. second two-sided face gear 10. input bevel gear 11. second driving shaft 12. rolling bearing of cylindric spiral gear 4. the 3rd cylindric spiral gear 5. first power shaft 6. first power transmission shaft 7. the 4th cylindric spiral gear 8. outfan bevel gear 9.

Detailed description of the invention

The present embodiment is a kind of bevel gear planetary mechanism infinitely variable speed transmission。

Consult Fig. 1, Fig. 2, the present embodiment bevel gear planetary mechanism infinitely variable speed transmission is secondary by two groups of slant gear transmission, bevel gear Gear Planet Transmission is secondary, rolling bearing forms, first group of slant gear transmission pair includes the 3rd cylindric spiral gear 4, 4th cylindric spiral gear 7, first power shaft 5, first power transmission shaft 6, first power shaft 5 and the first power transmission shaft 6 are splined shaft, 3rd cylindric spiral gear 4, the endoporus of the 4th cylindric spiral gear 7 is splined hole, 3rd cylindric spiral gear 4 is arranged on the first power shaft 5 by spline, 4th cylindric spiral gear 7 is arranged on the first power transmission shaft 6 by spline；First power shaft 5 one end is fixing with electromotor to be connected, first power shaft 5 other end is connected by rolling bearing 12 installation through second driving shaft 11 with two-sided face gear 9, first group of slant gear transmission adjutant's Partial Power branches to the first power transmission shaft 6, first power transmission shaft 6 is connected with motor, it is achieved mechanical energy converts electric energy to and carries out energy storage。Second group of slant gear transmission pair includes first cylindric spiral gear the 1, second cylindric spiral gear the 3, second power shaft 2, second driving shaft 11, second power shaft 2 and second driving shaft 11 are splined shaft, the centre bore of first cylindric spiral gear the 1, second cylindric spiral gear 3 is splined hole, first cylindric spiral gear the 1, second cylindric spiral gear 3 is separately mounted on the second power shaft 2 and second driving shaft 11, second power shaft 2 is fixing with motor to be connected, and is used as the input of secondary power。First cylindric spiral gear 1 is arranged on the second power shaft 2 by spline, second cylindric spiral gear 3 is arranged on second driving shaft 11 by spline, input bevel gear 10 and the second cylindric spiral gear 3 are arranged on second driving shaft 11 by spline, it is used for transmitting power and the rotating speed of motor, power and the rotating speed of input bevel gear 10 is regulated, it is achieved infinitely variable speeds by motor speed adjusting。Second power shaft the 2, first power transmission shaft 6 respectively with the first parallel installation of power shaft 5；First power shaft 5 is co-axially mounted with second driving shaft 11。

In the present embodiment, bevel gear Gear Planet Transmission pair includes two-sided face gear 9, input bevel gear 10, outfan bevel gear 8, first power shaft 5 is arranged on two-sided face gear 9 through the central bore of second driving shaft 11 by rolling bearing 12, it is used for transmitting power and the rotating speed of electromotor, drives two-sided face gear 9 to move。Input bevel gear 10 is meshed with the one side gear of two-sided face gear 9, the another side gear of two-sided face gear 9 is meshed with outfan bevel gear 8, outfan bevel gear 8 is used for power output, it is achieved being issued to bigger gear ratio at cramped construction, its gear ratio is maximum reaches 60:1。

By the rotating speed analysis to planetary transmission mechanism for bevel gears, can draw the first power shaft 5, outfan bevel gear 8, two-sided face gear 9, input bevel gear 10 rotation speed relation undertaken by formula (1):

$i=\frac{{\mathrm{\ω}}_5}{{\mathrm{\ω}}_8}=\frac{1}{1-\frac{Z_{10}}{Z_{9L}}\·\frac{Z_{9R}}{Z_8}+\frac{Z_{10}}{Z_{9L}}\·\frac{Z_{9R}}{Z_8}\·\frac{{\mathrm{\ω}}_{10}}{{\mathrm{\ω}}_5}}---\left(1\right)$

In formula, i is the gear ratio of bevel gear Gear Planet Transmission stepless speed changing mechanism, ω₅It is the first power shaft 5 rotating speed, ω₈For outfan bevel gear 8 rotating speed, ω₉For two-sided face gear 9 rotating speed, ω₁₀For input bevel gear 10 rotating speed, Z₈For outfan bevel gear 8 number of teeth, Z_9LFor the number of teeth, Z on the left of two-sided face gear 9_9RFor the number of teeth, Z on the right side of two-sided face gear 9₁₀For input bevel gear 10 number of teeth；

By the rotating speed analysis that second group of slant gear transmission is secondary, the second power shaft 2 can be obtained, the rotation speed relation of input bevel gear 10 is undertaken by formula (2):

${\mathrm{\ω}}_{10}={\mathrm{\ω}}_3=\frac{{\mathrm{\ω}}_1{Z}_1}{Z_3}=\frac{{\mathrm{\ω}}_2{Z}_1}{Z_3}---\left(2\right)$

In formula, ω₁₀For input bevel gear 10 rotating speed, ω₁It is the first cylindric spiral gear 1 rotating speed, ω₂It is the second power shaft 2 rotating speed, ω₃It is the second cylindric spiral gear 3 rotating speed, Z₁It is first cylindric spiral gear 1 number of teeth, Z₃It it is second cylindric spiral gear 3 number of teeth；

By formula (1) and formula (2) it can be seen that when the first power shaft 5 invariablenes turning speed, change input bevel gear 10 rotating speed by regulating the second power shaft 2 rotating speed, it is achieved the infinitely variable speeds of gear of output end 8 rotating speed。

Claims (2)

1. a bevel gear planetary mechanism infinitely variable speed transmission, it is characterized in that: include two groups of slant gear transmission secondary, bevel gear Gear Planet Transmission is secondary, rolling bearing, described first group of slant gear transmission pair includes the 3rd cylindric spiral gear, 4th cylindric spiral gear, first power shaft, first power transmission shaft, first power shaft and the first power transmission shaft are splined shaft, 3rd cylindric spiral gear, the centre bore of the 4th cylindric spiral gear is splined hole, 3rd cylindric spiral gear and the 4th cylindric spiral gear are separately mounted on the first power shaft and the first power transmission shaft, first power shaft one end is connected with electromotor, the first power shaft other end is connected by rolling bearing installation through second driving shaft with two-sided face gear, first group of slant gear transmission adjutant's Partial Power branches to the first power transmission shaft, first power transmission shaft is connected with motor, realize mechanical energy to convert electric energy to and carry out energy storage；

Described second group of slant gear transmission pair includes the first cylindric spiral gear, second cylindric spiral gear, second power shaft, second driving shaft, second power shaft and second driving shaft are splined shaft, first cylindric spiral gear, the centre bore of the second cylindric spiral gear is splined hole, first cylindric spiral gear, second cylindric spiral gear is separately mounted on the second power shaft and second driving shaft, second power shaft is connected with motor, input bevel gear and the second cylindric spiral gear are separately mounted on second driving shaft, pass through motor speed adjusting, regulate input bevel gear rotating speed, realize infinitely variable speeds；

Described bevel gear Gear Planet Transmission pair includes two-sided face gear, input bevel gear, outfan bevel gear, and two-sided face gear is meshed with input bevel gear, outfan bevel gear respectively, and outfan bevel gear is used for power output；First power shaft, outfan bevel gear, two-sided face gear, input bevel gear rotation speed relation undertaken by formula (1):

$i=\frac{{\mathrm{\ω}}_5}{{\mathrm{\ω}}_8}=\frac{1}{1-\frac{Z_{10}}{Z_{9L}}\·\frac{Z_{9R}}{Z_8}+\frac{Z_{10}}{Z_{9L}}\·\frac{Z_{9R}}{Z_8}\·\frac{{\mathrm{\ω}}_{10}}{{\mathrm{\ω}}_5}}---\left(1\right)$

In formula, i is the gear ratio of bevel gear Gear Planet Transmission stepless speed changing mechanism, ω₅It is the first power shaft rotating speed, ω₈For outfan bevel gear rotating speed, ω₉For two-sided end face gear rotational speed, ω₁₀For input bevel gear rotating speed, Z₈For outfan number of teeth in bevel gears and hypoid gears, Z_9LFor the number of teeth, Z on the left of two-sided face gear_9RFor the number of teeth, Z on the right side of two-sided face gear₁₀For input number of teeth in bevel gears and hypoid gears；

By the rotating speed that second group of slant gear transmission is secondary, the second power shaft can be obtained, the rotation speed relation of input bevel gear is undertaken by formula (2):

${\mathrm{\ω}}_{10}={\mathrm{\ω}}_3=\frac{{\mathrm{\ω}}_1{Z}_1}{Z_3}=\frac{{\mathrm{\ω}}_2{Z}_1}{Z_3}---\left(2\right)$

In formula, ω₁₀For input bevel gear rotating speed, ω₁It is the first cylindric spiral gear rotating speed, ω₂It is the second power shaft rotating speed, ω₃It is the second cylindric spiral gear rotating speed, Z₁It is the first cylindric spiral gear number of teeth, Z₃It it is the second cylindric spiral gear number of teeth；

By formula (1) and formula (2) it can be seen that when the first power shaft invariablenes turning speed, change input bevel gear rotating speed by regulating the second power shaft rotating speed, it is achieved the infinitely variable speeds of gear of output end rotating speed。

2. bevel gear planetary mechanism infinitely variable speed transmission according to claim 1, it is characterised in that: the second power shaft, the first power transmission shaft respectively with the first parallel installation of power shaft。