Variable-speed transmission device
A technology of variable and variable speed mechanism, applied in the direction of transmission, gear transmission, fluid transmission, etc., can solve the problems of high equipment cost, short life and high price, and achieve the effect of easy design and improved efficiency
Active Publication Date: 2017-08-01
HITACHI NICO TRANSMISSION
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Problems solved by technology
On the other hand, devices that perform inverter control are relatively expensive and have a short lifespan. In addition, the supply of components may be stopped. Therefore, there is a disadvantage that it needs to be updated regularly within a relatively short period, and the equipment cost becomes high.
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[0045] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each of the following drawings, for the sake of easy understanding, some parts are omitted or abbreviated, and the dimensional ratio of each part is not completely correct.
[0046] figure 1 It is a block diagram showing the configuration of the variable speed device 1 according to the present embodiment. As shown in the figure, the variable speed device 1 includes: a housing 10; an input shaft 20 and an output shaft 30, which are supported by the housing 10 so as to be able to rotate freely; a planetary gear mechanism 40, which is connected with the input shaft 20 and the output shaft 30; The mechanism 50 supplies control power for the output shaft 30 to shift speed to the planetary gear mechanism 40 ; the control device 60 is used to control the operation of the shift control mechanism 50 .
[0047] The case 10 is a member that rotatably supports each ...
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In order to provide a variable-speed transmission device for which the optimal design can be facilitated and the efficiency can be made higher than that of the prior art, this variable-speed transmission device (1) is equipped with: a planetary gear mechanism (40) to which an input shaft (20) and an output shaft (30) are connected; and a transmission control mechanism (50). The transmission control mechanism (50) is equipped with: a control-use input shaft (51) and a control-use output shaft (52); an input-side transmission mechanism (53) that transmits a portion of the rotary driving force of the input shaft (20) to the control-use input shaft (51); a transmission mechanism (54) that transmits the rotary driving force of the control-use input shaft (51) to the control-use output shaft (52), and changes the rotational frequency of the control-use output shaft (52); and an output-side transmission mechanism (55) that transmits the rotary driving force of the control-use output shaft (52) to a component forming the planetary gear mechanism (40) and not connected to the input shaft (20) or the output shaft (30), that is, to an internal gear (41), a sun gear (42), or a planetary gear carrier (44).
Description
technical field [0001] The present invention relates to a variable speed device that transmits rotational power of a prime mover to a driven machine and changes the rotational speed of the driven machine. Background technique [0002] Conventionally, in the operation of fluid machines such as pumps and blowers, generally, the rotational speed of a motor serving as a prime mover is changed by frequency conversion control to cope with load fluctuations. This frequency conversion control has an advantage of less loss than the damping control on the discharge side or the suction side of the fluid machine. On the other hand, devices that perform inverter control are relatively expensive and have a short lifespan. Furthermore, the supply of parts may be stopped. Therefore, there is a disadvantage that it needs to be updated regularly in a relatively short period, and the equipment cost is high. [0003] Since the inverter control has such disadvantages, in recent years, a method ...
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IPC IPC(8): F16H3/44F16H47/08
CPCF16H3/44F16H47/08F16H3/72F16H47/00
Inventor 樱井辉明渡部孝
Owner HITACHI NICO TRANSMISSION