JP3199620U - Roller chain - Google Patents

Abstract

A roller chain that improves wear resistance and achieves a long service life. An inner plate 11 and an outer plate 13 are alternately and flexibly connected via bushes 12 and pins 14, and a roller 15 is rotatably mounted on each bush 12. The inner plate 11, the outer plate 13, The pin 14 and the roller 15 are each made of stainless steel, and the bush 12 impregnates a sintered metal of stainless steel with lubricating oil. [Selection] Figure 1

Description

  The present invention relates to a long-life roller chain capable of long-term oil-free operation.

  A roller chain capable of long-term oil-free operation is known (for example, Patent Document 1).

  The conventional roller chain connects the inner and outer plates alternately and flexibly via a sintered metal bush impregnated with a lubricating oil in advance and a pin whose surface is plated with Ni. A felt moisture absorbent material is interposed between the opposing surfaces of the outer plate, and the moisture absorbent material is impregnated with lubricating oil. The hygroscopic material can absorb and retain a large amount of lubricating oil, so it can maintain the lubricating oil supply function for a long period of time, and improve the wear resistance performance of the entire chain to improve long-term oil-free operation. You can drive.

Japanese Patent No. 3280312

  When such a conventional technique is used, the roller chain needs to incorporate a felt-made moisture absorbing material for each link at the time of assembling, so that the assembling work is complicated and the manufacturing cost tends to be excessive. there were.

  Therefore, in view of the problems of the prior art, the purpose of this device is to improve wear resistance by using bushes of oil-impregnated sintered metal with all the components made of stainless steel, and use a complicated hygroscopic material. It is an object of the present invention to provide a long-life roller chain that can be avoided.

  In order to achieve such an object, the configuration of the present invention is such that the inner plate and the outer plate are alternately and flexibly connected via bushes at both ends of the inner plate and pins at both ends of the outer plate, and a roller is attached to each bush. The inner plate, the outer plate, the pin, and the roller are each made of stainless steel, and the bush is made to impregnate the sintered metal of the stainless steel with lubricating oil.

  The stainless steel materials of the inner plate, the outer plate, the pin, the roller, and the bush can each be equivalent to SUS304.

  The lubricating oil may be an NSF H1 certified product.

  When the configuration of this device is used, all the components are made of stainless steel, and oil-impregnated sintered metal bushes are used. Therefore, it is necessary and sufficient to operate without oiling without using a complicated hygroscopic material. A long service life.

  Stainless steel material equivalent to SUS304 is excellent in corrosion resistance, is most commonly distributed in the city, is easily available, and is inexpensive.

  NSF H1 certified lubricants are approved for use in places where they may accidentally come into contact with food, and are particularly useful, for example, for roller chains used in food machinery. In addition, NSF here means National Sanitation Foundation International (International Foundation for Hygiene Science).

Main part configuration diagram Test data diagram (1) Test data diagram (2) Test data diagram (3)

  Hereinafter, embodiments of the invention will be described with reference to the drawings.

  The roller chain is formed by alternately connecting the inner plates 11, 11,... And the outer plates 13, 13,. However, FIGS. 1A and 1B are a partially broken plan view and a front view of relevant parts, respectively.

  The roller chain includes a pair of inner plates 11, 11, and outer plates 13, 13 through bushes 12, 12 at both ends of the inner plates 11, 11 and pins 14, 14 at both ends of the outer plates 13, 13. .. Are alternately connected to bendable. Each bush 12 and each pin 14 are combined so as not to rotate relative to the corresponding inner plates 11 and 11 and outer plates 13 and 13, respectively, and each pin 14 can rotate relative to each corresponding bush 12. It is inserted. Each bush 12 has a roller 15 rotatably mounted thereon.

  Each inner plate 11, each outer plate 13, each pin 14, and each roller 15 are each formed of a stainless steel material equivalent to SUS304. Each bush 12 is formed as a so-called oil-impregnated sintered bush by impregnating a porous sintered metal of stainless steel material equivalent to SUS304 with NSF H1-certified lubricant.

  The durability test data of such a roller chain is illustrated in FIGS. However, in FIGS. 2 to 4, curves (1) and (2) indicate that the roller chain of this invention # 40 and the roller chain of the comparative example were subjected to continuous operation without lubrication under the same conditions at normal temperature and pressure. It is actually measured data. The roller chain of the comparative example is a standard stainless steel chain in which all components including the bush are made of SUS304 stainless steel.

  According to FIG. 2, it can be seen that the roller chain of the present invention has a wear life of about three times that of the standard stainless steel chain of the comparative example.

  Further, according to FIG. 3, the wear amount of the roller chain of the present invention is about the same as that of the standard stainless steel chain for about 50 hours from the start of operation, but the wear hardly progresses thereafter. On the other hand, it can be seen that the wear of the standard stainless steel chain progresses almost linearly.

  FIG. 4 shows wear elongation data when the chain tension is 135 kgf, which is three times the catalog value. The roller chain of this invention was able to realize a long life about 25 times that of a standard stainless steel chain.

  In addition, the roller chain of the present invention, unlike the standard stainless steel chain, did not generate any annoying high friction noise during the test operation.

  In the above description, the stainless steel material of each component of the roller chain may be other than SUS304. The lubricating oil impregnated in the bush 12 may be other than NSF H1 certified products.

  Note that the roller chain may be configured in two or more rows. Also, the roller chain can be used for any application including power transmission and article conveyance.

  The present invention can be widely and suitably applied to a roller chain for any application that requires a long-term operation without oil supply.

11 ... Inner plate 12 ... Bush 13 ... Outer plate 14 ... Pin 15 ... Roller

Applicant for utility model registration Oriental Oriental Industry Co., Ltd.

Claims (3)

  The inner plate and the outer plate are alternately and flexibly connected via bushes at both ends of the inner plate and pins at both ends of the outer plate, and a roller is rotatably attached to each bush. A plate, an outer plate, a pin, and a roller are each made of a stainless steel material, and the bush is formed by impregnating a sintered metal of a stainless steel material with lubricating oil.   The roller chain according to claim 1, wherein the stainless steel materials of the inner plate, the outer plate, the pin, the roller, and the bush are each equivalent to SUS304.   The roller chain according to claim 1, wherein the lubricating oil is an NSF H1 certified product.