Planetary multi-speed transmission method and device
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A variable speed transmission, planetary technology, applied in the direction of transmission, gear transmission, belt/chain/gear, etc., can solve the problems of high cost, large overall structure size, low transmission efficiency, etc., and achieve small size and weight, simple structure Effect
Inactive Publication Date: 2015-05-20
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
Stepped transmissions have stable transmission ratios, low noise, and high transmission efficiency. However, with the increase in the number of transmission stages, there are generally problems such as complex speed regulating mechanisms, excessive overall structural size, and high cost; while continuously variable transmissions can overcome problems such as However, there are problems such as low transmission efficiency, short service life of variable speed transmission parts, and reduced speed change stability due to the increase in service life.
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Embodiment 1
[0035] Such as figure 2 , 3As shown, the planetary multi-stage transmission device includes an input shaft 10, a first bearing 11, a first oil seal 12, an input shaft cover 13, a driving bevel gear 14, a box cover 15, a box 16, and a variable speed drive motor 17. Drive nut 18, drive screw 19, circlip for hole 20, screw support 21, second bearing 22, retractable dust cover 23, inner ring gear 24, face gear 25, circlip for second hole 26. The third bearing 27, the support sleeve 28, the output shaft cover 29, the output shaft 30, the second oil seal 31, the fourth bearing 32, the steel ball 33, the needle bearing 34, the round nut 35, the washer 36, the fifth bearing 37. Cylindrical gear 38, separation sleeve 39, driven bevel gear 40, rotating arm 41, sixth bearing 42, shaft circlip 43, guide flat key 44, support block 45, seventh bearing 46, first-stage sleeve Ring face gear 47, second stage ring face gear 48, third stage ring face gear 49, fourth stage ring face gear 50 an...
Embodiment 2
[0045] Figure 5 It is a structural schematic diagram of the planetary multi-stage variable speed transmission device of Embodiment 2. Such as Figure 5 Shown, with respect to embodiment 1 ( figure 2 ), this embodiment is to remove figure 2 Middle second stage ferrule face gear 48 and fourth stage ferrule face gear 50, support block 45, the seventh bearing 46, steel ball 33, needle roller bearing 34 are changed into centripetal thrust ball bearing 64 and form. This structure has three output speeds, which reduces the installation difficulty of the support block 45 and the seventh bearing 46, and there is a neutral gear when the inner ring gear 24 moves from one ring face gear to the other ring face gear during the shifting process Bit, can improve the smoothness of gear shifting.
[0046] The present invention can realize different transmission ratio requirements by changing the number of teeth of each gear, and also can make the ferrule end face gears sequentially fixed...
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Abstract
The invention discloses a planetary multi-speed transmission method and device. According to the device, a driving taper gear is connected with an input shaft, and the driving taper gear is engaged with a driven taper gear; the driven taper gear is fixedly connected with a cylinder gear and rotates around a rotary arm; the end surface gear assembly comprises multiple ferrule end surface gears, each ferrule end surface gear comprises end surface teeth and straight teeth, the end surface teeth are arranged on the end surface of each circular ferrule, the straight teeth are arranged along the outer cylinder surface periphery of the circular ferrule of each ferrule end surface gear, the end surface teeth of each ferrule end surface gear are engaged with the cylinder gear, and the straight teeth of each ferrule end surface gear are selectively fixed to an inner tooth ring of a speed regulating mechanism in an engaged mode; the rotary arm is perpendicular and orthogonal to the input shaft and is fixed to the input shaft, so that an integral part is formed. According to the planetary multi-speed transmission method and device, a non-stage transmission range is changed into multiple optional fixed speed ratios, the performance of a stage transmission is achieved, the whole device is simple in structure, small in size and light in weight, and gear transmission serves as the transmission mode so that the transmission efficiency is high.
Description
technical field [0001] The present invention relates to a power or motion speed change method and a speed change device, in particular to a planetary multi-stage speed change transmission method and device; the present invention is suitable for multi-stage transmission speed change in machine tools, vehicles, ships and other power machinery transmissions. technical background [0002] At present, the transmission in the power machinery transmission is composed of a transmission mechanism and a speed change mechanism. The transmission mechanism is mostly driven by ordinary gears or planetary gears. According to the change of transmission ratio, it can be divided into two types: stepped type and stepless type. Stepped transmission means that there are several optional fixed transmission ratios, and most of them adopt gear transmission, which can be divided into two types: ordinary gear transmission and planetary gear transmission with fixed gear axis; stepless transmission me...
Claims
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Application Information
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