JP2009162258A - Lubricating device for speed reducer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lubricating device for a speed reducer capable of appropriately lubricating the inside of the speed reducer and reducing a maintenance frequency of the speed reducer, even if an intermediate shaft and an output shaft are oriented to the vertical direction. <P>SOLUTION: The lubricating device 30 for the speed reducer is provided with the vertical intermediate shaft 12 and the output shaft 13 having upper and lower ends mounted to a speed reducer case 11 via bearings 14, 15, 16, 17, and the rotation of a horizontal input shaft 20 is sequentially transmitted to the intermediate shaft 12 and the output shaft 13 via a speed reducing gear train 21. The lubricating device for the speed reducer is further provided with a pump 32 pumping up lubricating oil 28 from the inside of the speed reducer case 11 via suction piping 31 and with supply piping 33, 34 for guiding lubricating oil discharged from the pump 32 to the bearings 14, 16 on upper end sides of the intermediate shaft 12 and the output shaft 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lubrication device for a speed reducer in which rotation of a horizontal input shaft is sequentially transmitted to a vertical intermediate shaft and an output shaft via a reduction gear train.

  As a lubrication device for a gear train or a bearing, devices having various configurations have been conventionally used. For example, a lubrication device that forcibly feeds lubricating oil to a bearing using a pump is known (see, for example, Patent Documents 1 and 2). There is also known a lubrication apparatus that performs lubrication by pumping up lubricating oil stored in a case with a gear and forcibly lubricating some bearings with a pump (see, for example, Patent Document 3).

JP 2005-351363 A JP 2004-340374 A Japanese Patent Laid-Open No. 8-200478

  In a reduction gear in which an intermediate shaft and an output shaft for constituting a reduction gear train are oriented in the vertical direction, the gear rotates horizontally. For this reason, in a lubrication device that uses gear scraping, there is a risk that sufficient lubricating oil may not be supplied to the bearing on the upper end side of each shaft or the upper gear.

  Therefore, the present invention provides a reduction gear lubrication device that can appropriately lubricate the inside of the reduction gear to reduce the maintenance frequency of the reduction gear even when the intermediate shaft and the output shaft are oriented in the vertical direction. The purpose is to provide.

  The present invention has a vertical intermediate shaft (12) and an output shaft (13) whose upper and lower ends are attached to a reduction gear case (11) via bearings (14, 15, 16, 17), and are horizontal. A reduction gear lubrication device (30) in which rotation of an input shaft (20) in a direction is sequentially transmitted to the intermediate shaft and the output shaft via a reduction gear train (21), from the inside of the reduction gear case A pump (32) that pumps up the lubricating oil (28) through the suction pipe (31), and a bearing (14, 16) on the upper end side of each of the intermediate shaft and the output shaft for the lubricating oil discharged from the pump. By providing the supply pipes (33, 34) leading to the above, the above-described problems are solved.

  According to the lubricating device of the present invention, the lubricating oil accumulated in the reduction gear case is pumped up by the pump and supplied to the bearings on the upper ends of the intermediate shaft and the output shaft. When the lubricating oil supplied to these bearings falls, the reduction gear train is also lubricated efficiently without leakage.

  In the lubricating device of the present invention, the speed reducer is attached to the base (2) in a region sandwiched between the drive target (3) driven by the speed reducer and the floor surface (FL), The pump may be attached to the outer periphery of the base. By arranging the pump on the outer periphery of the base, maintenance of the pump can be performed easily. In addition, when the speed reducer is arranged in the above-described region, it is difficult to perform maintenance of the speed reducer. Therefore, the merit obtained by providing the lubricating device of the present invention is great.

  At least one of the suction pipe and the supply pipe may have a transparent portion through which the lubricating oil passing through the inside can be visually observed. According to this, it is possible to easily confirm the degree of contamination of the lubricating oil, the occurrence of poor lubrication, and the like from the periphery of the airframe, and perform appropriate maintenance at an early stage. Further, the pump may be an air driven pump driven by the pressure of compressed air. According to this, forced lubrication can be realized using the pneumatic piping in the field. Therefore, when a lubrication device is added to an existing machine, an electrical facility work such as electrical wiring is not required, and the facility recovery operation can be easily performed.

  In addition, in the above description, in order to make an understanding of this invention easy, the reference sign of the accompanying drawing was attached in parenthesis, but this invention is not limited to the form of illustration by it.

  As described above, according to the lubricating device of the present invention, by supplying the lubricating oil from the pump to the bearings on the upper ends of the intermediate shaft and the output shaft, the lubricating oil supplied to the bearings drops. By doing so, the reduction gear train can be efficiently lubricated without leakage. Therefore, the durability of the bearing and the reduction gear train in the reduction gear case is improved, and the maintenance frequency of the reduction gear can be reduced.

  FIG. 1 shows a schematic configuration of a washing and filling machine for a beverage barrel having a speed reducer to which a lubricating device according to an embodiment of the present invention is applied. In the illustrated washing and filling machine 1, a swivel base 3 is provided on an upper part of a frame-shaped base 2, and a plurality of stations S for performing washing, filling, etc. on the beverage barrel B are provided around the swivel base 3. It is provided as appropriate. The base 2 is provided with an electric motor 4 as a rotational drive source. The rotation of the motor 4 is decelerated by the speed reducer 5 and transmitted to the swivel base 3, so that the swivel base 3 is swiveled around the body center CL. The rotation output from the speed reducer 5 is also distributed to some stations S via the belt 6.

  The reduction gear 5 is disposed in a narrow space sandwiched between the swivel base 3 and the factory floor surface FL on which it is placed. Therefore, maintenance work for the speed reducer 5 is not easy. Therefore, in the cleaning and filling machine 1 of the present embodiment, the lubrication device 30 of FIG. 2 is applied to the speed reducer 5, thereby improving the durability of the bearing and the like and thereby reducing the frequency of maintenance. Yes.

  As shown in FIG. 2, the speed reducer 5 has a hermetic type speed reducer case (hereinafter abbreviated as “case”) 11. In the case 11, an intermediate shaft 12 and an output shaft 13 are attached with their respective axes oriented in the vertical direction. Upper and lower end portions of the intermediate shaft 12 are rotatably supported on the upper wall 11a and the lower wall 11b of the case 11 via rolling bearings 14 and 15, respectively. Upper and lower ends of the output shaft 13 are rotatably supported on the upper wall 11a and the lower wall 11b of the case 11 via rolling bearings 16 and 17, respectively. The upper and lower ends of the output shaft 13 project outside through the case 11, and transmission elements (not shown) such as pulleys and gears for transmitting rotation to the swivel 3 or the station S can be integrally rotated on these projecting portions. It is attached. The part where the output shaft 13 penetrates the case 11 is sealed with oil seals 18 and 19.

  The motor 4 described above is attached to the side surface of the case 11 with its rotation axis oriented in the horizontal direction. An input shaft 20 that is rotationally driven by the motor 4 is provided inside the case 11, and the rotation of the input shaft 20 is sequentially transmitted to the intermediate shaft 12 and the output shaft 13 via the reduction gear train 21. The reduction gear train 21 includes a bevel gear 22 that reduces and transmits the rotation of the input shaft 20 to the rotation of the intermediate shaft 12, and a pair of helical gears 23 that transmits the rotation of the intermediate shaft 12 to the output shaft 13 while reducing the rotation. , 24. The bevel gear 22 and the helical gear 24 are attached to the intermediate shaft 12 or the output shaft 13 by keys 25 and 26 so as to be integrally rotatable. The helical gear 23 is integrally formed on the outer periphery of the intermediate shaft 12.

  The case 11 is filled with lubricating oil 28. The speed reducer 5 of the present embodiment is designed on the assumption that the intermediate shaft 12 and the output shaft 13 are used with their axes oriented in the horizontal direction, and the helical gear 24 for the lubricating oil in the case 11 is designed. Lubrication is carried out by scooping up with the like. However, since the speed reducer 5 is disposed in a narrow space below the swivel base 3 as described above, it is difficult to secure the mounting space in the posture in which the motor 4 and the speed reducer 5 are connected in the vertical direction. The motor 4 and the speed reducer 5 are connected in the horizontal direction, and the intermediate shaft 12 and the output shaft 13 are used in the vertical direction. Therefore, it is impossible to scoop up the lubricating oil in the case 11 with the helical gear 24 or the like. The lubrication device 30 of this embodiment is provided for such a situation.

  The lubrication device 30 includes a pump 32 that pumps up the lubricating oil 28 from the inside of the case 11 through the suction pipe 31, and the lubricating oil discharged from the pump 32 is a bearing on the upper end side of each of the intermediate shaft 12 and the output shaft 13. And supply pipes 33 and 34 leading to 14 and 16. The pump 32 is an air-driven pump that operates with the pressure of the compressed air supplied from the compressed air source 35. As the compressed air source 35, for example, an air compressor for supplying compressed air to various places in the factory can be used. The pump 32 is installed on the outer periphery of the base 2 in FIG. More specifically, the pump 32 is installed outside the swivel base 3 in an area that can be easily accessed by the operator. The suction pipe 31 and the supply pipes 33 and 34 are, for example, resin-made hoses, and at least a part of them has a transparent portion where the lubricating oil can be visually observed.

  According to the lubricating device 30 described above, the lubricating oil 28 accumulated in the case 11 is pumped up by the pump 32, and the lubricating oil is guided to the bearings 14 and 16 through the supply pipes 33 and 34. 14 and 16 are forcibly lubricated. Furthermore, the lubricating oil that has flowed down from the bearing 14 on the upper end side of the intermediate shaft 12 is also supplied to the meshing portion of the input shaft 20 and the bevel gear 22 and the meshing portions of the helical gears 23 and 24. The reduction gear train 21 is also forcibly lubricated. The lubricating oil that has flowed down from the bearing 16 on the upper end side of the output shaft 13 also contributes to the lubrication of the helical gear 24. Therefore, the bearings 14 and 16 and the reduction gear train 21 are lubricated without leaks and their durability is improved.

  In the lubrication device 30 of this embodiment, the pump 32 is disposed on the outer periphery of the base 2, so that the maintenance of the pump 32 can be easily performed. Moreover, since at least a part of the pipes 31, 33, and 34 are made transparent, the degree of contamination of the lubricating oil, the occurrence of poor lubrication, etc. can be easily confirmed from the surroundings of the aircraft, and appropriate maintenance can be performed early. be able to. Since the pump 32 is of the air drive type, forced lubrication can be realized using pneumatic piping in the factory. Therefore, when the lubrication device 30 is added to an existing machine, an electrical facility work such as electrical wiring is not required, and the facility recovery operation can be easily performed.

  The present invention is not limited to the form described above, and may be implemented in an appropriate form. For example, the number of intermediate shafts or output shafts in the speed reducer is not limited to one, and there may be two or more intermediate shafts or output shafts. The reduction gear train is not limited to the illustrated configuration, and can be appropriately changed. The equipment, device, and machine to which the speed reducer is applied are not limited to the beverage basket washing and filling machine, and may be changed as appropriate.

The figure which shows schematic structure of the washing | cleaning filling machine for drink barrels which has a reduction gear to which the lubrication apparatus which concerns on one form of this invention was applied. The figure which shows the internal structure of a reduction gear.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing and filling machine 2 Base 3 Turning table 4 Motor 5 Reduction gear 11 Case 11a Upper wall 11b Lower wall 12 Intermediate shaft 13 Output shaft 14, 15, 16, 17 Bearing 18, 19 Oil seal 20 Input shaft 21 Reduction gear train 22 Bevel gears 23 and 24 Helical gears 28 Lubricating oil 30 Lubricating device 31 Suction piping 32 Pumps 33 and 34 Supply piping 35 Compressed air source B Beverage barrel CL Machine body center FL Factory floor

Claims (4)

The upper and lower ends have a vertical intermediate shaft and an output shaft attached to the speed reducer case via bearings, and the rotation of the horizontal input shaft is sequentially applied to the intermediate shaft and the output shaft via the reduction gear train. A reduction gear lubrication device to be transmitted,
A pump for pumping lubricating oil from the inside of the speed reducer case through a suction pipe;
A supply pipe for guiding the lubricating oil discharged from the pump to bearings on the upper end side of each of the intermediate shaft and the output shaft;
A speed reducer lubrication device comprising:   The speed reducer is attached to a base in a region sandwiched between a driving target driven by the speed reducer and a floor surface, and the pump is attached to an outer periphery of the base. The lubricating device according to claim 1.   The lubricating device according to claim 1 or 2, wherein at least one of the suction pipe and the supply pipe has a transparent portion through which lubricating oil passing through the pipe can be visually observed.   The said pump is an air drive type pump driven with the pressure of compressed air, The lubricating device as described in any one of Claims 1-3 characterized by the above-mentioned.

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