JP2005052800A - Gear device for vertical crushing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gear device for a vertical crushing machine which controls the device to become long and large vertically and is simple in structure. <P>SOLUTION: A rotary disk 11 is supported to be rotatable around a vertical shaft. A first driving shaft 13 is rotated in a horizontal posture by a motor. The rotation of the first driving shaft 13 is converted into the rotation around the vertical shaft through a deceleration mechanism 14 to rotate a second driving shaft 15. A first gear 16 set on the second driving shaft 15 is engaged with a second gear 17 set on the rotary disk 11. In this way, the rotation of the second driving shaft 15 is directly transmitted to the rotary disk 11 to rotate the rotary disk 11. By this structure, the height of the gear device can be reduced, and the structure of gear device can be simplified. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a gear device having a rotary disk that is used in a vertical pulverizer that pulverizes a raw material to be supplied between a rotary table and a pulverizing roller disposed on the rotary table, and that rotates the rotary table. .

  Conventionally, as a pulverizer that finely pulverizes raw materials such as coal, limestone, slag, and cement raw material, a vertical pulverizer that pulverizes between a rotary table and a pulverization roller disposed on the upper part thereof is known (for example, , See Patent Document 1). In the vertical pulverizer described in Patent Document 1, a gear device (for a vertical pulverizer) that rotationally drives a rotary table in a horizontal posture by decelerating and transmitting rotation input from a motor arranged in a horizontal posture. A gear device) is provided directly below the rotary table. In the vertical crusher gear device described in Patent Document 1, rotation of an input shaft (first drive shaft) connected to a motor is transferred to a vertical drive shaft (second drive shaft) via a bevel gear. The rotation of the second drive shaft is further reduced through a planetary gear mechanism provided above the second drive shaft, and the rotary table is driven.

JP-A-8-24690 (page 3, FIG. 1)

  However, in the vertical crusher gear device described in Patent Document 1, the above-described second drive shaft and the drive shaft of the rotary table that is the output shaft of the planetary gear mechanism extend vertically through the planetary gear mechanism. This is a structure that is long in the vertical direction, which is not desirable from the viewpoint of efficient arrangement space. In addition, the structure of the gear device itself is complicated, which increases the number of parts, the number of manufacturing steps, and increases the weight, and easily increases the maintenance load even after installation.

  In view of the above circumstances, an object of the present invention is to provide a gear device for a vertical crusher having a simple structure while suppressing a vertically long structure.

Means and effects for solving the problems

The vertical crusher gear device of the present invention is used in a vertical crusher that crushes the supplied raw material between the rotary table and a crushing roller disposed on the rotary table, and rotationally drives the rotary table. The present invention relates to a gear device having a rotating disk.
In order to achieve the above object, the present invention has several features as follows. That is, the present invention includes the following features alone or in combination as appropriate.

  The first feature of the vertical crusher gear device of the present invention for achieving the above object is connected to a motor and a support portion that rotatably supports the rotary disk in a horizontal posture around a vertical axis, A first drive shaft that is rotationally driven in a horizontal posture, a second drive shaft that is rotationally driven via a speed reduction mechanism that converts the rotation of the first drive shaft into a rotation around a vertical axis, and the second drive shaft. A first gear that is provided on the drive shaft and rotates together with the second drive shaft, and an external gear or an internal gear that is integrally or assembled with the rotary disk, and is engaged with the first gear. Two gears.

  According to this configuration, the rotational force of the second drive shaft is directly transmitted to the rotary disc by meshing the first gear provided on the second drive shaft with the second gear provided on the rotary disc. The For this reason, it can suppress that the position in the perpendicular direction of a rotation disc protrudes greatly to the upper end side of the 2nd drive shaft, and the gear unit for vertical crushers becomes a structure long in the perpendicular direction. Can be suppressed. Further, since the second gear formed on the rotating disk is directly meshed with the first gear, the structure can be greatly simplified.

  A second feature of the gear device for a vertical crusher according to the present invention is that the support portion includes a support shaft parallel to the second drive shaft, an inner periphery of the rotating disk formed in a ring shape, and the support. A radial bearing disposed between the outer periphery of the shaft and the radial bearing is positioned within a tooth width of the second gear in the vertical direction.

  According to this configuration, since the vertical heights of the radial bearing and the second gear are substantially the same position, the driving force in the horizontal direction is actuated by the engagement of the first gear and the second gear to drive the rotating disk. In doing so, it is possible to suppress a large moment from acting on the radial bearing.

  A third feature of the vertical crusher gear device of the present invention is that the rotating disk is supported by the support portion via a thrust bearing, and the tooth width position of the second gear and the thrust bearing The arrangement position is at least partially overlapping or close to each other in the vertical direction.

  According to this configuration, since the tooth width position of the second gear and the arrangement position of the thrust bearing are substantially the same height in the vertical direction, it is possible to prevent the rotating disk from protruding greatly above the support portion. The height of the vertical crusher gear unit can be reduced.

  A fourth feature of the vertical crusher gear device of the present invention is that a lubricating oil supply device for supplying lubricating oil to the gear and the bearing is disposed below the support portion.

  According to this configuration, utilizing the fact that the vertical height of the support portion may be lower than the vertical height of the second drive shaft, the lubricating oil supply device can be used by effectively utilizing the space below the support portion. Can be arranged. For this reason, it is not necessary to provide a lubricating oil supply device installation space separately from the installation space of the vertical crusher gear device. In addition, since the lubricating oil supply device is provided below the support portion, the length of the lubricating oil path to the gear and the bearing can be greatly reduced, and the piping system can be reduced.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a cross-sectional view illustrating a vertical crusher gear device 1 (hereinafter referred to as a gear device 1) according to a first embodiment of the present invention (a cross-sectional view taken along line I-I in FIG. 2). 2 is a plan view and FIG. 3 is a side view. This gear device 1 is a raw material supplied between a rotary table (not shown) coupled to and driven by a rotating disk 11 provided in the gear device 1 and a crushing roller (not shown) provided thereon. Is used in a vertical pulverizer (not shown), and the rotary table is driven to rotate via a rotating disk 11 in response to an input from a motor (not shown).

  As shown in FIGS. 1 to 3, the gear device 1 includes a rotating disk 11, a support portion 12 of the rotating disk 11, a first drive shaft 13, a speed reduction mechanism 14, a second drive shaft 15, a first gear 16, and a rotation. A second gear 17 provided on the disc 11 is provided. These are provided so as to be accommodated in the casing 18.

  The rotating disk 11 is disposed in a horizontal posture, and rotates itself to drive a rotating table coupled thereto, and pulverizes the raw material with a pulverizing roller disposed above the rotating table. The pulverization of the raw material is not limited to that performed between the rotary table and the pulverizing roller, and may be performed directly between the rotating disk 11 and the pulverizing roller (in this case, the rotation is performed). The table is formed integrally with the rotating disk). The rotating disk 11 is formed in a ring shape, and a second gear 17 described later is formed on the rotating disk 11.

  The support part 12 supports the rotary disk 11 in a horizontal posture so as to be rotatable around a vertical axis. The support unit 12 includes a support base 19, a support shaft 20, and a radial bearing 21. The support base 19 is fixed on the lower casing 18 a on the lower half side of the casing 18, whereby the support portion 12 is disposed on the upper half side in the gear device 1.

  The support shaft 20 of the support portion 12 is fixed so as to project on the support base 19 and is provided in a vertical posture (parallel to the second drive shaft 15). The radial bearing 21 is disposed between the inner periphery of the rotating disk 11 and the support shaft 20, whereby the rotating disk 11 is supported rotatably with respect to the support shaft 20.

  The radial bearing 21 is disposed so as to be positioned within the tooth width of the second gear 17 in the vertical direction. As described above, when the radial bearing 21 and the second gear 17 have substantially the same vertical height, the rotary disk 11 is driven by the horizontal driving force transmitted from the second gear 17. It is possible to suppress a large moment from acting on the radial bearing 21. Therefore, the radial bearing 21 can be prevented from being damaged and the strength can be easily secured.

  A thrust bearing 28 is disposed between the support base 19 and the rotating disk 11, and the rotating disk 11 is rotatable with respect to the support portion 12 via the radial bearing 21 and the thrust bearing 28. It is supported by. The thrust bearing 28 is arranged such that the tooth width position of the second gear 17 and the arrangement position of the thrust bearing 28 partially overlap in the vertical direction. That is, a step portion 29 is provided at the lower portion of the rotating disk 11, and the upper portion side of the thrust bearing 28 is disposed in the step portion 29. As described above, the second gear 17 and the thrust bearing 28 are located at substantially the same height in the vertical direction, so that the rotating disk 11 can be prevented from protruding greatly above the support portion 12. The height of the gear device 1 can be reduced.

  The tooth width position of the second gear 17 and the arrangement position of the thrust bearing 28 are not limited to at least partly overlapping in the vertical direction, and may be close to each other in the vertical direction. For example, the stepped portion 29 may not be formed on the rotating disk 11 and the upper surface of the thrust bearing 28 and the lower surface of the rotating disk 11 may be located in substantially the same plane.

  The first drive shaft 13 is rotatably supported in a horizontal posture via a bearing 22 with respect to the casing 18, and has a motor (not shown) on one end side (left end side in FIGS. 1 and 2) protruding from the casing 18. )). That is, the input shaft is driven to rotate in a horizontal posture along with the rotation of the motor.

  The speed reduction mechanism 14 includes a bevel gear 23 provided on the other end side of the first drive shaft 13 and a bevel gear 24 provided substantially in the middle of the second drive shaft 15. Through the meshing of the bevel gear 23 and the bevel gear 24, the rotation of the first drive shaft 13 in the horizontal posture is decelerated and converted to the rotation around the vertical axis, and is transmitted to the second drive shaft 15 in the vertical posture.

  The second drive shaft 15 is rotatably supported in a vertical posture through bearings 26 and 27 at two locations, a pedestal 25 fixed to the bottom surface in the casing 18 and a substantially intermediate position in the vertical direction of the casing 18. Is done. The second drive shaft 15 is rotationally driven in a vertical posture by the speed reduction mechanism 14 as described above.

  The first gear 16 is provided on the upper end side of the second drive shaft 15 and rotates together with the second drive shaft 15. The second gear 17 is formed by integrally providing an external gear on the outer periphery of the rotating disk 11 and meshes with the first gear 16. The rotating disk 11 is rotationally driven through the meshing of the first gear 16 and the second gear 17.

  The gear device 1 has the above-described configuration and is used as a gear device for a vertical crusher. Then, the rotation input from the motor is transmitted from the first drive shaft 13 to the second drive shaft 15 via the speed reduction mechanism 14, and further, the rotary disk 11 via the first gear 16 and the second gear 17. Is driven to rotate. Thereby, in the vertical crusher in which the gear device 1 is used, the raw material is pulverized between the rotary table coupled to the rotary disk 11 and driven and the pulverization roller.

  As described above, according to the gear device 1, the position of the rotating disk in the vertical direction can be prevented from projecting greatly toward the upper end side of the second drive shaft, and the vertical crusher gear device can be It can suppress that it becomes a long structure. Further, since the second gear formed on the rotating disk is directly meshed with the first gear, the structure can be greatly simplified. Therefore, it is possible to reduce the number of parts, reduce the number of manufacturing steps, reduce the size, reduce the weight, and facilitate maintenance after installation.

  In the gear device 1, the second gear 17 is formed as an external gear provided integrally with the rotating disk 11, but may be an external gear provided assembled to the outer periphery of the rotating disk 11. . In addition, the second gear may be one in which an internal gear is integrated or assembled instead of an external gear. In this case, for example, the outer edge portion of the rotating disk may be formed in a bevel shape, and the internal gear may be formed integrally or assembled on the inner periphery of the bevel-shaped portion. That is, even if the second gear is arranged so that the beveled portion covers the first gear, and the internal gear of the second gear and the first gear mesh with each other, the rotating disk is rotationally driven. Good.

(Second Embodiment)
Next, a vertical crusher gear device according to a second embodiment of the present invention will be described. FIG. 4 is a cross-sectional view (corresponding to FIG. 1 in the gear device 1) illustrating the vertical crusher gear device 2 (hereinafter referred to as the gear device 2) according to the second embodiment. In the gear device 2, the same elements as those in the gear device 1 are denoted by the same reference numerals.

  The gear device 2 is configured in the same manner as the gear device 1, except that a lubricating oil supply device for supplying lubricating oil to each gear and each bearing is disposed below the support portion 12. Different. That is, the gear device 2 is arranged so that the lubricating oil supply device 30 (hereinafter referred to as the oil supply device 30) is accommodated in the lower casing 18a.

  The oil supply device 30 includes an oil supply piping system 31, an oil supply pump 32, a filter mechanism 33, a cooling water system 34, and the like. The upstream side of the oil supply piping system 31 (upstream side of the oil supply pump) is connected to an oil storage tank 35 formed in the lower casing 18a, and the downstream side of the oil supply piping system 31 can supply oil to each gear and each bearing. It is extended.

  Thus, the fact that the vertical height of the support portion 12 may be lower than the vertical height of the second drive shaft 15 makes it possible to effectively use the space below the support portion 12 to make the fuel supply device 30 It can be arranged. For this reason, it is not necessary to provide an installation space for the oil supply device 30 separately from the installation space for the gear device 2. Further, by providing the oil supply device 30 below the support portion 12, the length of the lubricating oil supply path can be significantly reduced, and the piping system can be reduced.

  The oil storage tank 35 is formed in the lower casing 18 a by being partitioned by a partition wall 36, and the space on the side where the speed reduction mechanism 14 is located constitutes the oil storage tank 35. Thus, in the gear device 2, the structure is greatly simplified, and the vertical height dimension tolerance is large and can be made compact. Therefore, the space in the casing 18 can be effectively used to store oil. Providing the tank 35 can be easily realized. In the case of the gear device 1, the oil storage tank 35 can be similarly formed in the casing 18.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made as long as they are described in the claims. For example, the following modifications may be made.

(1) A plurality of first gears that mesh with second gears provided on the rotating disk may be provided. That is, corresponding to the plurality of first gears, the first drive shaft, the second drive shaft, and a plurality of speed reduction mechanisms provided between them are provided, and the rotating disk provided with the second gear is provided with a plurality of rotation disks. It may be one driven by the first gear (multi-drive system). In this case, the power transmitted from each first gear can be reduced, and the elements such as the first gear of each system that transmit power to the second gear can be reduced.

(2) The radial bearing disposed between the rotating disk and the support shaft may not be located within the tooth width of the second gear in the vertical direction. Further, a plurality of radial bearings may be arranged in the vertical direction. Various types of bearings can be used as each bearing.

(3) As for the form of the first gear and the second gear, both are supported and meshed in parallel in a horizontal posture, the first gear is provided in the second drive, and the second gear is formed on the rotating disk. If it is, various forms can be taken. Further, the meshing between the first gear and the second gear may take any form, whether through parallel teeth or through helical teeth.

(4) In the second embodiment, regarding the lubricating oil supply device disposed below the support portion, not all of the lubricating oil supply device may be accommodated in the casing.

It is sectional drawing which illustrates the gear apparatus for vertical crushers which concerns on 1st Embodiment of this invention. It is a top view of the gear apparatus for vertical crushers shown in FIG. FIG. 2 is a side view of the vertical crusher gear device shown in FIG. 1. It is sectional drawing which illustrates the gear apparatus for vertical crushers which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gear apparatus 11 for vertical crushers Rotating disk 12 Support part 13 1st drive shaft 14 Reduction mechanism 15 2nd drive shaft 16 1st gear 17 2nd gear

Claims (4)

A gear device having a rotating disk that is used in a vertical pulverizer that pulverizes a supplied raw material between a rotary table and a pulverizing roller disposed on the rotary table, and that rotates the rotary table;
A support portion for rotatably supporting the rotating disk in a horizontal posture around a vertical axis;
A first drive shaft coupled to the motor and driven to rotate in a horizontal posture;
A second drive shaft in a vertical posture that is rotationally driven via a speed reduction mechanism that converts rotation of the first drive shaft into rotation about a vertical axis and transmits the rotation;
A first gear provided on the second drive shaft and rotating together with the second drive shaft;
A second gear which is formed by providing an external gear or an internal gear integrally or assembled with the rotating disk, and meshes with the first gear;
A gear unit for a vertical crusher, comprising: The support portion includes a support shaft parallel to the second drive shaft, and a radial bearing disposed between an inner periphery of the rotary disk formed in a ring shape and an outer periphery of the support shaft. ,
2. The vertical crusher gear device according to claim 1, wherein the radial bearing is positioned within a tooth width of the second gear in a vertical direction. The rotating disk is supported via a thrust bearing with respect to the support portion,
The tooth width position of the second gear and the arrangement position of the thrust bearing are at least partially overlapped or close to each other in the vertical direction. Gear unit for vertical crusher.   The vertical crusher according to any one of claims 1 to 3, wherein a lubricating oil supply device for supplying lubricating oil to the gear and the bearing is disposed below the support portion. Gear device.

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