JPH04341483A - High efficiency elevator device - Google Patents

Abstract

PURPOSE:To provide a high efficiency elevator device equipped with a rotary boosting device which can amplify an input. CONSTITUTION:As for a high efficiency elevator device 10, an eccentric boosting driving gear 22 having a large diameter is engaged with a driving gear 21 which has a small diameter and is driven by an input shaft 15b, and the eccentric boosting driving gear is connected with a planetary gear 28 having the smaller diameter, and the torque of the driving gear is amplified and transmitted to the planetary gear, and the amplified output is transmitted to a driving pulley 14 from the output side of a planetary gear mechanism which operates as a driven part.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device, and more particularly to a lifting device such as an elevator or an escalator.

0002

BACKGROUND OF THE INVENTION Conventional lifting devices are inefficient and consume a lot of energy.

0003

SUMMARY OF THE INVENTION An object of the present invention is to provide a high-performance lifting device that consumes less energy.

0004

[Means for Solving the Problems] An elevating device of the present invention includes an elevating drive member, a drive pulley that drives the elevating drive member, an electric motor that drives the drive pulley, and a space between the drive pulley and the electric motor. a rotational booster arranged to amplify the output of the electric motor and transmit it to the drive pulley, the rotational booster including a casing and a rotational booster drive mechanism housed in the casing; and a driven part equipped with a planetary mechanism driven by the drive part, and the rotation booster drive mechanism engages with a small-diameter drive gear connected to an electric motor and rotates on its axis. The planetary mechanism includes a large-diameter eccentric boosting drive gear that revolves around the axis of the driven part, and the planetary mechanism includes a sun gear that is coaxial with the drive gear, and an internal gear that has a larger diameter than the sun gear.
It is characterized in that it includes a planetary gear that has a smaller diameter than the eccentric booster drive gear and rotates integrally with it in relation to the wheel axis, and the driven part is connected to the drive pulley main body.

[0005]

[Operation] In the lifting device of the present invention, the rotary booster amplifies the input torque transmitted to the small-diameter drive gear via the eccentric booster drive gear that has a larger diameter than the drive gear, and transfers this amplified torque to the above-mentioned The increased output is transmitted to a planetary gear having a smaller diameter than the eccentric booster drive gear in relation to the wheel shaft, thereby transmitting the increased output to the driven part.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the high-performance lifting device according to the present invention will be described below with reference to the drawings. In FIG. 1, a high-performance lifting device 10 includes an elevator 12, which is an elevator cab or the like that is connected to one side of a lifting drive member 11 made of a rope or the like and moves up and down, and a counterweight 13 fixed to the opposite side of the lifting drive member 11. , lifting drive member 1
1, a rotational booster 15 that transmits an amplified output to the drive pulley 14, and an electric motor 16 connected to the rotational booster 15. The elevating device 10 may be an escalator in which the elevating drive member is directly provided with a plurality of stair members or an endless belt member instead of an elevator cab, but since its structure is well known, a detailed explanation will be omitted. In FIG. 2, the rotary booster 15 is housed in a casing 15a, and includes a rotary booster drive mechanism 19 disposed coaxially and functioning as a drive section, and a driven section connected to the rotary booster drive mechanism 19. The planetary mechanism 20 functions as a planetary mechanism 20.

[0007] The rotation booster drive mechanism 19 has a casing 15a.
A small-diameter drive gear 21 is rotatably supported by the motor 16 and is driven by an input shaft 15b connected to the electric motor 16. A large-diameter eccentric boosting drive gear 22 that rotates while rotating is provided.

The planetary mechanism 20 includes a sun gear 24 and an internal gear 26 that are concentric with the drive gear 21, and further rotates integrally with the eccentric boost drive gear 22 of the rotation boost drive mechanism 19. A plurality of planetary gears 28 are provided which engage with the planetary gears 28. One of the plurality of planetary gears 28 has a diameter smaller than that of the eccentric booster drive gear 22, and is connected to each other by a connecting shaft 22a in a wheel axis relationship. The plurality of planetary gears 28 are rotatably supported by a carrier 30, and the carrier 30 further rotatably supports the eccentric booster drive gear 22 at one end thereof. The balance weight 32 is attached to the internal gear 2 at the other end of the carrier 30 in the same plane as the eccentric boost drive gear 22 in order to absorb vibrations accompanying the rotational movement of the eccentric boost drive gear 22.
6 and is supported by shafts 32a, 32b or other suitable fixing means. The balance weight 32 may be formed integrally with the carrier 30. Figure 2
, 3, the internal gear 26 is fixed, and the amplified output is transmitted to the output shaft 15c of the sun gear 24.
taken out.

FIG. 3 shows a basic principle diagram for explaining the operation of the rotary booster 15 shown in FIG. 2. In FIG. There is.

In FIGS. 2 and 3, a small diameter drive gear 21
When driven by the input shaft 15b, the large-diameter eccentric booster drive gear 22 revolves around the axis of the output shaft 15c while rotating. At this time, since the planet gear 28 is physically connected to the eccentric boost drive gear 22 via the connection shaft 22a, the planet gear 28 is connected to the small diameter drive gear 21 by the large diameter eccentric boost drive gear 22. rotates with a torque larger than the torque, transmits this increased torque to the sun gear 24,
The increased output is transmitted from the output shaft 15c of the sun gear 24 to the drive pulley 14.

Particularly in FIG. 3, the internal gear 2
6 is fixed and the carrier 30 is rotated one rotation counterclockwise, the rotational speed and torque of each element will be considered. The number of teeth of the sun gear 24, planet gear 28, internal gear 26, eccentric boost drive gear 22, and drive gear 21, respectively.

0012

[Math 1]

[0013]

[Outside 1] n1, n2, n3 Then, these can be found using the following formula.

[0014]

[Math 2]

When the planet gear 28 rotates 1.5 rotations, the eccentric booster drive gear 22 also rotates 1.5 rotations. When the eccentric booster drive gear 22 rotates once, the rotation speed of the drive gear 21

0
016]

[Outside 2] n4 is obtained from the following equation.

[0017]

[Math 3]

The planetary gear 28 and the eccentric booster drive gear 22 are 1
．． Rotation speed of drive gear 21 when rotating 5 times

[0019]

[Outside 3] n5 is obtained by the following formula

[0020]

[Math 4]

[0021]

[Outside 4] n1' is calculated by the following formula

[0022]

[Math 5]

Assume now that the drive gear is rotated with a torque of 15 kg·cm. At this time, the eccentric boost drive gear 22
, the radius of the planet gear 28, sun gear 24 and drive gear 21 is

[0024]

[Math 6]

[0025]

[Math 7]

[0026]

[Outer 5] Ts is calculated by the following formula

[0027]

[Math. 8]

Power when the drive gear 21 rotates at 1500 revolutions per minute with a torque of 15 kg cm

[0029]

[Outer 6] M1 is calculated using the following formula.

[0030]

[Math. 9]

[0031] At this time, the sun gear is 25.5 kg/cm
of torque per minute.

[0032]

[Math. 10]

[0033]

[Outer 7] M2 is calculated using the following formula.

[0034]

[Math. 11]

[0035]

[Outer 8] S is calculated by the following formula

[0036]

[Math. 12]

[0037]

As is clear from the above, according to the present invention, it is possible to provide a high-performance lifting device that can significantly save energy. In the embodiments, each rotating element and fixed element are explained as being composed of gears, but it is clear that rotating elements such as rollers may be used instead of gears. In the embodiment, the planetary gears are shown as directly engaging with the sun gear and the internal gear, but each planetary gear has a first planetary gear that engages with the sun gear and a second planetary gear that engages with the internal gear. The first and second planetary gears may be configured to engage with each other. Further, although the output of the rotary booster is shown as being taken out from the sun gear of the planetary mechanism, it may be taken out from a carrier connecting the planetary gears. Note that the driven portion may be combined with a second-stage booster, a planetary mechanism, or a differential gear device.

[Brief explanation of drawings]

FIG. 1 is a preferred embodiment of a high-performance lifting device according to the present invention.

FIG. 2 is a concrete structure of the rotary booster shown in FIG. 1;

FIG. 3 is a basic principle diagram for explaining the operation of the structure shown in FIG. 2;

[Explanation of symbols]

10 Lifting device 11 Lifting drive member 12 Elevator cab 13 Counterweight 14 Drive pulley 15 Rotary booster 16 Electric motor 19 Rotary boost drive mechanism 20 Planetary mechanism 21 Drive gear 22 Eccentric boost drive gear 24 Sangia 26 Internal gear 28 Planetary gear 30 Career 32 Balance weight

Claims (8)

[Claims] 1. An elevation drive member, a drive pulley that drives the elevation drive member, an electric motor that drives the drive pulley, and an electric motor that is disposed between the drive pulley and the electric motor and amplifies the output of the electric motor. and a rotational booster for transmitting power to the drive pulley, the rotational booster being connected to a casing, a rotational booster drive mechanism disposed on the same rotational shaft in the casing, and the rotational booster drive mechanism. a small-diameter drive gear disposed on the same rotational shaft and driven by the electric motor; a sun gear comprising a large-diameter eccentric boosting drive gear that revolves around the periphery while rotating, the planetary mechanism being disposed on the same rotation axis; an internal gear concentric with the sun gear; and the sun gear and the internal gear. and a planetary gear that is arranged between the eccentric booster drive gear and rotates integrally with the eccentric booster drive gear, and the planetary mechanism is connected to the drive pulley as a driven part. Performance lifting device. 2. The high-performance lifting device according to claim 1, wherein the planetary mechanism includes a carrier that supports the planetary gear and the eccentric booster drive gear, and a balance weight provided on the carrier. . 3. The high-performance lifting device according to claim 2, wherein the balance weight projects outward from the internal gear. 4. The high-performance lifting device according to claim 1, wherein the internal gear is fixed and an amplified output is taken out from the sun gear. 5. An elevation drive member, a drive pulley that drives the elevation drive member, an electric motor that drives the drive pulley, and an electric motor disposed between the drive pulley and the electric motor to amplify the output of the electric motor. a rotational booster for transmitting power to the drive pulley, the rotational booster includes a casing, an input shaft rotatably supported in the casing and connected to the electric motor, and a rotational booster for transmitting power to the drive pulley. a small-diameter drive gear connected to the shaft; a large-diameter eccentric booster drive gear that engages with the drive gear on the inside and revolves around the input shaft while rotating; and the drive gear is separated from the input shaft. a movable sun gear concentric with the sun gear; an output shaft connected to the sun gear and rotatably supported by the casing and connected to the drive pulley; and an internal gear fixed concentrically to the sun gear. , a planetary gear disposed between the sun gear and the internal gear, having a smaller diameter than the eccentric booster drive gear and rotating integrally therewith, the amplified output is transmitted to the A high-performance lifting device characterized by transmission to a drive pulley. 6. The high-performance lifting device according to claim 5, wherein the planetary mechanism includes a carrier that supports the planet gear and the eccentric boost drive gear, and the carrier includes a balance weight. . 7. The high-performance lifting device according to claim 6, wherein the balance weight has a curved surface. 8. The high-performance lifting device according to claim 7, wherein the curved surface is semicircular.