KR20110068500A - Cycloid decelerator for having multi-output shaft - Google Patents

Abstract

PURPOSE: A multi-shaft cycloid speed reducer is provided to arrange plurality of output shafts on the concentric circle by reducing a driving rpm of one input shaft. CONSTITUTION: An input shaft(30) is connected to a driving shaft(21) of a drive motor(2). The first output shaft(31) is connected to the input shaft. The first output shaft forms a minimum diameter while extending a central axis longitudinally. The first output shaft forms an eccentric shaft portion(327) in a fixed position. The second output shaft(32) is adhered to the first output shaft longitudinally by penetrating the inner space of the second output shaft on the central axis.

Description

Cyclic decelerator for having multi-output shaft}

In the present invention, the disk (DISC, hereinafter referred to as the 'disk') by the eccentric bearing (CAM BEARING, hereinafter referred to as the 'eccentric shaft portion') when the circular axis is rotated, the cycloid box (hereinafter referred to as 'gear housing') ) Rolling rotation within the disk, and the output shaft is decelerating as the disk rotational motion rotates the output shaft roller at the same time, thereby slowing the output of the driving shaft and rotating differently through multiple output shafts. The present invention relates to a multi-axis cycloid (hereinafter, referred to as a multi-axis) reducer constituting a plurality of output shafts concentrically.

In general, the reduction gear device for the stirrer is used in the industrial field has been applied in a variety of forms, but the conventional gear reducer device for the stirrer had the following problems.

Most conventional gearboxes for agitators have one output shaft, and the stirring shaft and the impeller were fixedly connected to the output shaft to satisfy the stirring and rotation of the agitating material in one direction. In this stirring method, the material to be stirred flows along the rotational direction of the stirring shaft and the impeller or sticks to the impeller frequently. Therefore, in order to obtain an effective stirring state, the stirring process should be continued for a long time, thereby reducing cost and improving productivity. There was a difficult problem to expect.

In order to solve this problem, reduction gear units having a plurality of output shafts have been known. That is, Patent No. 10-0428653 proposes an involute reducer having a multi-output shaft to improve this problem. That is, as shown in Figs. 1A and 1B, the gear housing 51, the internal gear 53 fixed to the gear housing 51, the input shaft 55, the sun gear 57, Base planet gear group 59, the third planet gear group 61, the fourth planet gear group 63, the rotation support means 70, the third planet gear group 61 and the fourth planet And third output means 80 and fourth output means 90 meshed with the gear group 63, respectively, and are configured with bearings b6, b7, b8, b9, b10, b11, and b12. . The base planet gear group 59 is composed of a plurality of planet gears meshing with the sun gear 57 and the internal gear 53 in the gear housing 51. In this configuration, the planet gear of the base planet gear group 59 receives the rotational force from the sun gear 57 and rotates (rotates) the center of the gear housing 51. Revolves in a fixedly installed internal gear (53). In addition, the third planet gear group 61 is coupled to the planet gear upper surface of the base planet gear group 59, respectively, and consists of a plurality of planet gears different in diameter from the planet gears of the base planet gear group 59. do. In addition, the fourth planet gear group 63 is coupled to the upper surface of the planet gear of the third planet gear group 61, respectively, and the planet gears of the base planet gear group 59 and the third planet gear group 61. Is composed of a plurality of planet gears of different diameters. As described above, when the planet gear diameters of the third planet gear group 61 and the fourth planet gear group 63 are configured to be different from the planet gear diameters of the base planet gear group 59, the third gear meshed with the third planet gear group 61 The output means 80 and the fourth output means 90 can rotate at different speeds.

However, such a conventionally known speed reducer having a multi-output shaft has a structure in which the output shafts are not concentric and require a constant distance between the shafts, so that interference occurs during rotation of the stirring shaft and the impeller. The space limitation and cost increase at the time of installation have inevitable problems, and the structure is complicated, the disassembly and assembly is difficult, and the handling is inconvenient, because the driving shaft and the output shaft are on the other axis.

In addition, the involute type reducer has a problem of the involute type reducer in which the torque transmission part is worn and damaged, causing failure in long term use, and the torque transmission part is concentrated because an overload shock is transmitted to the gear teeth. In addition, this involute type reducer had a disadvantage that only a reduction ratio of 1/6 or less was achieved in one stage.

An object of the present invention is to provide a multi-axis cycloid reducer for agitator having a plurality of output shafts required for a highly concentrated agitator, which requires a high concentration and requires a plurality of stirring members.

An object of the present invention is to provide a multi-axis cycloid reducer in which one input shaft drive rotation speed is reduced by a cycloid reducer, but a plurality of output shafts are concentric.

An object of the present invention is to provide a cycloid reducer having at least two output shafts while improving the low reduction ratio of an involute type reducer having a multi-output shaft.

The multiaxial cycloid reducer of the present invention for achieving the above object,

An input shaft connected to the drive shaft of the drive motor, and a first output shaft connected to the input shaft, the first output shaft extending along a central axis and forming a minimum diameter; A pair of first cycloid discs fixed at the center thereof as eccentric shaft portions on the input shaft, forming a plurality of holes on the plate surface, and having a predetermined curved tooth shape along the periphery thereof, and a carrier inserted into the holes; The first output flange and the roller bearing in contact with the curved surface of the cycloid disk are formed around the inner circumferential surface of the first output flange which is rotated and fixed by rotation of the cycloidal disk so that the cycloid tooth is rotated to decelerate a predetermined ratio. It consists of a first gear housing and a bearing member separated from the first output shaft to make independent rotation, and is integrally connected to the output flange, and the first output shaft is larger than the first output shaft, which is long adhered on the central axis through the pipe. A second output shaft of diameter; And a multi-axis in which the rotational force of the first output shaft and the rotational force of the second output shaft by the rotational force of the first cycloid disc are independently different from each other, including upper and lower casings that cover the upper and lower portions of the first gear housing. Is achieved as a cycloid reducer,

The multiaxial cycloid reducer of the present invention for achieving the above object,

An input shaft connected to the drive shaft of the drive motor, and a first output shaft connected to the input shaft, the first output shaft extending along a central axis and forming a minimum diameter; A pair of first cycloid discs fixed at the center thereof as eccentric shaft portions on the input shaft, forming a plurality of holes on the plate surface, and having a predetermined curved tooth shape along the periphery thereof, and a carrier inserted into the holes; The first output flange and the roller bearing in contact with the curved surface of the cycloid disk are formed around the inner circumferential surface of the first output flange which is rotated and fixed by rotation of the cycloidal disk so that the cycloid tooth is rotated to decelerate a predetermined ratio. It consists of a first gear housing and a bearing member separated from the first output shaft to make independent rotation, and is integrally connected to the output flange, and the first output shaft is larger than the first output shaft, which is long adhered on the central axis through the pipe. A second output shaft of diameter; A pair of second cycloid discs fixed at the center thereof as eccentric shaft portions on the second output shaft, having a plurality of holes formed on the plate surface, and having a predetermined curved shape along the periphery thereof, and a carrier inserted into the holes; The second output flange and the roller bearing in contact with the curved tooth of the cycloid disk are wound around the inner circumferential surface of the second output flange, which is fixed to the plurality of pins so that the cycloid tooth is rotated according to the rotation of the cycloidal disk, thereby decelerating a predetermined ratio. A second gear housing formed and a bearing member that is separated from the second output shaft so as to be independently rotated, and integrally connected to the output flange, and the second output shaft being long adhered to the central axis through the pipe; A third output shaft having a diameter larger than the output shaft; And upper and lower casings covered over the upper and lower portions of the first gear housing,

It is achieved as a multi-axis cycloid reducer of different rotational speed by installing a plurality of concentric concentric output shafts with respect to one output shaft, but having different reduction ratios on the outer periphery.

The present invention provides a cycloid reducer having a plurality of output shafts required for a highly concentrated stirrer that requires a high concentration and requires a plurality of stirring members.

The present invention provides a multi-axis cycloid reducer in which the multi-output shaft is concentric with at least two output shafts.

The present invention has the effect of improving the low reduction ratio of the involute type reducer having a conventional multiple output shaft and providing a cycloid reducer having at least two output shafts.

According to the present invention, the cycloidal disk rotates in the gear housing by the eccentric shaft, and the output shaft is reduced in accordance with the number of mountains of the disk as the rotational motion of the disk rotates the output shaft roller at the same time. By reducing the rotation speed, the reduction ratio is improved from 1/19 to 1/89 (single-stage 1), compared to the involute type reducer of 1/6 or less (single-stage standard), and the tooth of the disk is a cycloid gear. As the teeth of the disk are always in contact with the pin roller for more than 1/2, there is no damage to shock and overload, and it transmits big power with small size and light weight, and the teeth of the disk become an even continuous curve. This pin roller is always in front rolling contact, so no broken or worn out teeth, the driving shaft and output shaft are arranged on the same line, and the front rolling contact makes average on 1st speed reduction (1/19 ~ 1/89). High of 90% The efficiency is high in multi-stage type (1/361 or more), which is excellent in involute type reducer as well as other reducers, low power consumption, reduced maintenance time, economical Because of high tooth ratio and continuous cloud contact, the operation is smooth, and the power transmission part is precision tooth grinding and processing, so there is little vibration and noise, simple structure, easy disassembly and assembly, and the input and output are on the same line, so it is easy to handle. Has

That is, in the present invention, the involute type reducer is normally worn with an overload shock transmitted to the gear teeth, and the torque transmission area is worn and damaged. The overload shock is absorbed by distributing the overload shock as a micro gear, and the torque is transmitted. It has the effect of providing a speed reducer for stirrer, which adopts a speed reducer with a semi-permanent cycle without wear due to the rolling contact.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The reducer 3 to be applied to the present invention includes a reducer having two output shafts 31 and 32 shown in FIGS. 2A and 2B, a reducer having three output shafts 31, 32 and 33 shown in FIGS. 3A and 3B, 4 is a speed reducer 3 having a plurality of output shafts 31, 32, 33, 34 made of a speed reducer having four output shafts 31, 32, 33, 34. If these are demonstrated concretely according to the Example of the output number, it is as follows.

≪ Example 1 >

2A and 2B are a perspective view and a cross-sectional view of the biaxial cycloid reducer of the first embodiment of the present invention.

The cycloid reducer 3 having an output shaft of the present invention 2 shown in this figure is largely decelerated and rotated with a first output shaft 30 (first output shaft system, hereinafter referred to as a first output shaft) coaxial with the input shaft 30. And a second output shaft 31 (second output shaft system, hereinafter referred to as a second output shaft), and upper and lower casings 301 and 303 that cover them externally.

First, the first output shaft 31 is connected to the input shaft 30 connected to the drive shaft 21 of the drive motor 2, and is connected to the input shaft 30, extends long on the central axis and is installed to form a minimum diameter.

The second output shaft 32 includes a first output flange 321, a first cycloid disk 322, a first gear housing 325, an eccentric shaft portion 327, and a bearing member 326.

First, the first cycloid disk 322 is fixed to its center as an eccentric shaft portion 326 on the input shaft 30 to be eccentrically rotated, and forms a plurality of holes 322a on the plate surface, the predetermined along the periphery It consists of a pair which formed the curved tooth shape 322b.

The curved tooth form 322b of the cycloid disk 322 is in rolling contact with the inner contact surface of the first gear housing 325.

The first gear housing 325 is formed around the inner circumferential surface to form a plurality of roller bearings 325a at predetermined intervals, the outside of which forms a cover structure.

The first output flange 321 includes a carrier 321a rotatably fixed to a plurality of pins 321b in a plurality of holes 322a of the first cycloid disk 322 such that the cycloid disk 322 is inserted into the first output flange 321. According to the rotation of the cycloid toothed pin is made to rotate.

Therefore, the pair of first cycloid disks 322 are eccentrically rotated in contact with the gear housing 325, and the first output flange 321 is pin-connected to the eccentrically rotated first cycloid disk 322. In addition, the center of the second output shaft 32 integrally connected to the first output flange 321 as the bearing member 326 so as to be independent of the first output shaft 31 is made to extend on the central axis through the tube inside. A predetermined deceleration rotation is output while forming a cylindrical shaft member having a diameter larger than that of the first output shaft 31.

The upper and lower casings 301 and 303 are assembled together with the gear housing 325 to cover the outside of the first and second gear housings 325, and the plurality of fixing members 304 and the bearing members 326. 326a and sealing member 326b.

The cycloid reducer having an output shaft of the present invention 2 is configured to independently output rotational force of the first output shaft 31 and rotational force of the second output shaft 32 due to the rotational force of the first cycloid disk 322. Has

Therefore, it is suitably used as a rotation driving means of various devices requiring various speeds of the output shaft, and particularly suitable when the stirring blades of the agitator require different rotations.

Unexplained code

<Example 2>

3A and 3B are a perspective view and a sectional view of a speed reducer having three output shafts according to a second embodiment of the present invention.

Cycloid reducer having an output shaft of the present invention 3 according to the drawings,

The third output shaft 33 may be further included in the first and second output shafts 31 and 32 described above.

That is, as shown in the drawing, the speed reducer 3 having the third output shaft of the present invention has a large input shaft 30, a coaxial first output shaft 30, a second output shaft 31 that is decelerated and rotated, and a third An output shaft 32 (hereinafter referred to as a third output shaft system, hereinafter referred to as a third output shaft) and upper and lower casings 301, 302, 303, and 305 which cover them from the outside are divided.

The first output shaft 31 is connected to the input shaft 30 connected to the drive shaft 21 of the drive motor 2, connected to the input shaft 30, extends long on the central axis and forms a central axis with a minimum diameter, on the front end side thereof. The eccentric shaft portion 327 may be formed.

The second output shaft 32 is the first output flange 321, the first cycloid disk 322, the first gear housing 325, the eccentric shaft portion 327, the bearing member 326 (326a), It consists of a sealing member 326b.

That is, the eccentric shaft portion 327 is sandwiched between the bearing member 326 to form an eccentric rotation, and a plurality of pipe holes 322a are formed on the plate surface, and a predetermined curved tooth shape 322b is formed along the periphery thereof. The pair of first cycloid disk 322 and the roller bearing 325a contacting the curved teeth 322b of the cycloid disk 322 are formed around the inner circumferential surface so that the cycloid disks 322 are formed on the inner circumferential surface thereof. The first gear housing 325 and the plurality of pins 321b to be rotatable in a substantially circular shape to protrude in one direction, and each of the pins 321b to be rotatably provided by a carrier 321a A first output flange 321 inserted into the hole 322a of the cycloid disks 322 and decelerated by the cycloid curved teeth 322b according to the rotation of the cycloid disk 322, and the first output flange 321. Integrally connected to the flange 321, the first output shaft 31 It is a cylindrical shaft tube that is long and penetrated through the inner space to the central axis.

The third output shaft 33 is inserted into the eccentric shaft portion 337 formed in the second output shaft 32 in the form of a tube, and forms a plurality of pipe holes 332a on the plate surface, and has a predetermined curved tooth shape along the periphery thereof. A pair of second cycloid disks 332 forming 332b and a carrier 331a which is inserted into the hole 332a and rotates are rotatably fixed by a plurality of pins 331b to form a second cycloid disk ( Cyclone tooth rotation is performed as the rotation of 332 rotates, and the second output flange 3321 and the roller bearing 335a contacting the curved tooth form 332b of the cycloid disk 332 are rounded around the inner circumferential surface. A second gear housing 335 formed on the second bearing member 336 and the second output flange 331 which are separated from the second output shaft 32 slidingly installed on the inner circumferential surface of the second gear housing 335. Integrally connected, the second output shaft 32 is the central axis through the tube Long and gwanchak, it comprises a cylindrical shaft of a diameter larger than that of the second output shaft 32.

 <Example 3>

4 is a cross-sectional view of the four output shaft reducer of the third embodiment of the present invention.

In addition to the cycloid reduction gear having the first, second and third output shafts 31, 32 and 33, the fourth output shaft 34 may be further included.

That is, the eccentric shaft portion 347 is welded with the bearing member 346 interposed therebetween to form an eccentric rotation, and a plurality of pipe holes 342a are formed on the plate surface, and a predetermined curved tooth shape 342b is formed along the periphery thereof. A pair of third cycloid disks 342 and roller bearings 345a contacting the curved teeth 342b of the cycloid disks 342 are formed around the inner circumferential surface thereof so that the cycloid disks 342 are formed. The third gear housing 345 which is rotatable from the inside and the plurality of pins 341b are formed in a substantially circular shape to protrude in one direction, and each of the pins 341b is rotatably provided with a carrier 341a. A third output flange 341 inserted into the hole 342a of the cycloid disks 342 and decelerating by the cycloid curved tooth shape 342b according to the rotation of the cycloid disk 342, and the third output flange A cylindrical shaft integrally connected to 341 Achieved.

Accordingly, the first output shaft 31 penetrates through the central axis of the second output shaft 32, and the third output shaft 33 and the fourth output shaft 34, which are concentrically outward from each other, are sequentially connected with different diameters.

In the case of the cycloid reducer having four output shafts as described above, when the cycloid disk, gear housing and output flange are formed in multiple layers, four or more output shafts can be assembled.

On the other hand, Figure 5 of the accompanying drawings shows an example of the case of being installed in the horizontal direction as another embodiment of the cycloid reducer having the output shaft 3 of the present invention. Reference numeral 4 is a support 4 for supporting the reducer in the case of horizontal installation. Description of the specific structure is omitted because it is the same as the above-described three-axis cycloid reducer.

According to the present invention, the multi-axis cycloid reducer of each of the above-described embodiments rotates the cycloidal disks in the gear housings by the eccentric shaft portion when the input shaft rotates, whereby the rotational motion of the disk rotates the output shaft roller at the same time. Since the output shaft is decelerated in accordance with the number of mountains of the disc, the conventional multi-axis involute type reducer handles the reduction ratio of 1/6 or less in one stage up to 1/19 ~ 1/89 when decelerating in one stage. It is possible that the reduction ratio is much larger.

In addition, since the teeth of the disk are cycloid and more than 1/2 of the teeth of the disk are always in contact with the pin roller, they are not damaged by shock and overload, so they transmit large power at a small and light weight. It has an even continuous curve, and the contact part of the disk is made of a pin roller, so it is always in front rolling contact, so there is almost no broken teeth or wear, and the driving shaft and the output shaft are arranged on the same line. As it is in contact, it exhibits high efficiency of 90% on average in 1st stage deceleration (1/19 ~ 1/89), and is superior to other involute gear units as well as other gear units in terms of efficiency of multi-stage (1/361 or more). It is very economical because it consumes less and maintenance time is reduced due to less maintenance time, and the operation rate is smooth because the tooth ratio is high and the contact of continuous clouds is smooth. Low noise, simple structure, easy disassembly and assembly, and input / output are on the same line.

In the present invention, the cycloidal speed reducer of two output shafts to four output shafts has been described, but more output shafts can be increased, and the cycloidal speed reducer of four or more output shafts can also be achieved as an embodiment of the present invention and form the same scope.

1A and 1B are cross-sectional views and exploded views of an involute reducer having a multi-axis of the prior patent 10-0428653.

2A and 2B are a perspective view and a cross-sectional view of the biaxial cycloid reducer of the first embodiment of the present invention;

3A and 3B are a perspective view and a cross-sectional view of a triaxial cycloid reducer according to a second embodiment of the present invention;

4 is a cross-sectional view of the four-axis cycloid reducer of the third embodiment of the present invention,

5 is a cross-sectional view of another embodiment of the present invention triaxial cycloid reducer.

Claims (5)

In the multi-axis cycloid reducer, An input shaft 30 connected to the drive shaft 21 of the drive motor 2; A first output shaft 31 connected to the input shaft 30 and extending on the central axis to form a minimum diameter but forming an eccentric shaft portion 327 at a predetermined position; As long as the eccentric shaft portion 327 is interposed with the bearing member 326 interposed therebetween to form an eccentric rotation, a plurality of holes 322a are formed on the plate surface, and a predetermined curved tooth shape 322b is formed along the periphery thereof. The pair of first cycloid disks 322 and roller bearings 325a contacting the curved teeth 322b of the cycloid disks 322 are formed on the inner circumferential surface of the pair so that the cycloid disks 322 rotate inwardly. The first gear housing 325 and the plurality of pins 321b are formed in a substantially circular shape to protrude in one direction, and the pins 321b are rotatably provided with a carrier 321a, respectively. A first output flange 321 inserted into a hole 322a of the disks 322 and decelerated by the cycloid curved teeth 322b in accordance with the rotation of the cycloid disk 322, and the first output flange 321; ) Is integrally connected to the first output shaft 31 By passing through the inner space to the mandrel second output shaft 32 of cylindrical shape, which is installed to hold gwanchak; And Including the upper and lower casings 301 and 303 covered up and down as the fixing member 304 with the first gear housing 325 therebetween, A multi-axis cycloid reducer for forming two output shafts of different rotational speeds independently of the first output shaft (31) and the second output shaft (32). The method of claim 1, As long as the eccentric shaft portion 337 is immersed with the bearing member 336 interposed therebetween to form an eccentric rotation, a plurality of pipe holes 332a are formed on the plate surface, and a predetermined curved tooth shape 332b is formed along the periphery thereof. The pair of second cycloid disks 332 and roller bearings 335a contacting the curved teeth 332b of the cycloid disk 332 are formed around the inner circumferential surface so that the cycloid disks 332 are formed therein. The second gear housing 335 to be rotatable and the plurality of pins 331b are formed in a substantially circular shape to protrude in one direction, and the pins 331b are rotatably provided with a carrier 331a, respectively. A second output flange 331 which is inserted into a hole 332a of the disks 332 and decelerates by the cycloid curved teeth 332b according to the rotation of the cycloid disk 332, and the second output flange 331. Cylindrical third output shaft integrally connected to the A multi-axis cycloid reducer further comprising (33). The method of claim 2, As long as the eccentric shaft portion 347 is attached to the eccentric shaft portion 347 with the bearing member 346 interposed therebetween to form an eccentric rotation, a plurality of pipe holes 342a are formed on the plate surface, and a predetermined curved tooth shape 342b is formed along the periphery thereof. The pair of third cycloid disks 342 and roller bearings 345a contacting the curved teeth 342b of the cycloid disks 342 are formed around the inner circumferential surface so that the cycloid disks 342 are formed therein. The third gear housing 345 to be rotatable and the plurality of pins 341b are formed in a substantially circular shape to protrude in one direction, and the pins 341b are each rotatably provided with a carrier 341a. A third output flange 341 inserted into the hole 342a of the disks 342 and decelerated by the cycloid curved teeth 342b according to the rotation of the cycloid disk 342, and the third output flange 341. Cylindrical fourth output connected integrally with Multi-axial reduction gear further comprising a cycle Lloyd 34. The method according to any one of claims 1 to 3, The first output shaft 31 penetrates through the central axis of the second output shaft 32, but has a concentric circular third output shaft 33 outside the second output shaft 32 and a fourth concentric circular shape outside the third thrust shaft 33. Multi-axis cycloid reducer, characterized in that the output shaft 34 is in succession of different diameters. The method according to any one of claims 1 to 3, A multi-axis cycloid reducer, characterized in that the cycloid reducer consisting of the first, second, third, and fourth output shafts (31, 32, 33, 34) is a reducer for agitator.

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