JPH09255122A - Elastic chain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure an elastic chain that is lighter in weight and ease of assembly, less in noise and, inherent in wear resistance and anticorrosion by installing a sprocket meshing hole in an intermediate part of a chain body consisting of elastic blanks, and an pin hole being fitted with a connecting pin in both sides, respectively. SOLUTION: A chain body 11 is composed of elastic blanks, and a reinforcing Aramide fiber 12 is embeddingly installed in the inner part along the longitudinal direction. In addition, one or more than two of sprocket meshing holes 15 are installed in this chain body 11, thereby unifying the chain body 11 as one body. When this elastic chain 10 is used, the number of necessary pieces of elastic chains 10 are prepared for the end, and respective connecting parts 14 of these chains 10 are connected by a connecting member 17. This connection between the connecting member 17 and respective elastic chains 10 is carried out in use of each connecting pin 18 to be inserted through into these individual elements. In this connection, some traveling wheels 22 are attached to a central part of the connecting member 17 via a supporting member 21, making it travel in a guide rail 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic chain mainly composed of an elastic material such as natural rubber or synthetic rubber.

[0002]

2. Description of the Related Art A casting chain 50 used in a conventional chain conveyor or the like, as shown in FIG. 3, has two link plates 51 and 52 forming a pair and connecting pins 5 at both ends thereof.
It was composed of one link plate 54 connected by 3. Then, the traveling wheels 55 are attached to the portion of the one link plate 54 at an appropriate pitch, and the guide rail 5
I was going to run by 6. The transmission of power to the casting chain 50 is performed by the two link plates 51,
This is done by engaging a sprocket (not shown) connected to the rotary power source at the portion 52.

[0003]

However, the above casting chain has the following problems. Since the whole is made of metal, it is relatively heavy and is troublesome to carry and install. Since the individual link plates 51, 52 and 54 are manufactured one by one and are connected by the connecting pins 53 to be assembled, it takes time and effort to assemble. Since it is made of metal, rust and corrosion easily occur. Since it is a metal, noise is likely to be generated, and when it is made of a cast product, it gradually wears due to use. The present invention has been made in view of the above circumstances, and an object thereof is to provide an elastic chain that is light and easy to assemble, has less noise, and has abrasion resistance and corrosion resistance.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The elastic chain described above has a chain body made of an elastic material such as natural rubber or synthetic rubber, and has 1 or 2 in the middle part.
The above-mentioned sprocket engaging holes are provided, and pin holes into which the connecting pins are fitted are provided on both sides. The elastic chain according to a second aspect is the elastic chain according to the first aspect, wherein the pin hole is a bush embedded in the chain body. Here, the bush may be made of a metal pipe having sufficient strength (for example, quenched S35C), or may be impregnated with lubricating oil or the like (for example, dry bearing). The elastic chain according to claim 3 is the elastic chain according to claim 1 or 2, wherein reinforcing fibers or reinforcing wires are embedded in the chain body. Here, the reinforcing fiber refers to a synthetic resin fiber such as aramid fiber or a natural fiber, and the reinforcing wire refers to a fiber such as a piano wire or a wire base wire that has sufficient strength and can be repeatedly bent.

Since the elastic chain according to claims 1 to 3 is made of an elastic material such as natural rubber or synthetic rubber having a specific gravity of about 1/5 to 1/6 as compared with the cast product, The weight of is reduced. Also, since the chain body has flexibility, it is not necessary to connect it by a link plate as in the case of cast products, and one or two chain bodies can be connected to one chain body.
By providing the above sprocket meshing holes, the chain body can be integrated. Since the chain body is made of an elastic material such as natural rubber or synthetic rubber, it elastically abuts the sprocket, does not generate noise, and has corrosion resistance and abrasion resistance. Particularly, in the elastic chain according to the second aspect, since the bush is embedded in the pin hole, the elastic chain has sufficient abrasion strength with respect to the connecting pin to be inserted. Further, in the elastic body chain according to the third aspect, since the reinforcing fiber or the reinforcing wire is embedded in the chain body, the tensile strength is increased as compared with the case where the chain body is made of only the elastic material.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. 1 is a side view of an elastic body chain according to an embodiment of the present invention, and FIG. 2 is an explanatory view of the elastic body chain.

As shown in FIGS. 1 and 2A, in an elastic chain 10 according to an embodiment of the present invention, a chain body 11 has a quadrangular cross section and natural rubber or synthetic rubber (for example, NBL) or the like. An aramid fiber 12, which is an example of a reinforcing fiber, is embedded along the length direction and is made of the elastic material. This aramid fiber 12 is shown in FIG.
As shown by the solid line in Fig. 2, it may be stopped before the pin hole 13 and arranged linearly, but as shown by the dotted line in FIG. Sufficient strength can be obtained by disposing the aramid fibers 12 along the entire length of 11.

However, if the aramid fibers 12 are arranged over the entire length of the chain body 11, one of the aramid fibers 12 needs to expand and the other of the aramid fibers 12 needs to contract when the elastic chain 10 is bent by engaging with the sprockets. Yes, if the sprocket diameter is small and the turning radius is small,
As shown by the solid line in FIGS. 1, 2A and 2B, the aramid fiber 12 needs to be divided, and in this case, it is put on both sides of the sprocket meshing hole 15 of low strength. It is sufficient to put a small number (5 to 10) of the aramid fibers 12 in the four corners as shown by solid lines in FIGS. 1 and 2A. Here, it is also possible to use another synthetic resin fiber having strength instead of the aramid fiber, it is also possible to use a wire rod such as a piano wire in some cases, when using a wire rod It is preferable to provide unevenness on the surface of the wire in order to improve the compatibility with the elastic member.

As shown in FIG. 2C, a bush 16 made of hardened carbon steel (S35C) is used for the pin holes 13 provided in the connecting portions 14 on both sides of the chain body 11 as shown in FIG. 2C. However, it may be a harder metal, or an oil impregnated sintered pipe or resin pipe. Further, it is preferable to provide irregularities on the surface of the bush 16 in order to improve the familiarity with the elastic material. The connecting portion 14 is formed in a split shape on both sides of the chain body 11, the pin hole 13 is formed at the front end thereof, and the groove bottom has a semicircular cross section.

The sprocket meshing holes 15 are for fitting the teeth of meshing sprockets, and both ends in the lengthwise direction are formed in a semicircular cross section as shown in FIGS. 1 and 2A. The distance between the center of the pin hole 13, the center of the semicircle of the groove bottom of the connecting portion 14, and the center of the semicircle of each sprocket meshing hole 15 is the same pitch P. As a result, the drive sprocket smoothly meshes like the conventional cast link chain.

When this elastic chain 10 is used, a required number of elastic chains 10 are prepared, and the connecting portions 14 of each elastic chain 10 are connected by a connecting member 17 as shown in FIG. Since this connecting member 17 has only one link, it may be made of an elastic member made of natural rubber or synthetic rubber, or may be made of metal or hard plastic, and further, strength and weight reduction, noise prevention, etc. When considering the above, it is possible to use a composite material in which the bone portion is made of metal and the periphery is made of plastic or rubber.
The connection member 17 and the elastic body chain 10 are connected by using the connection pins 18 which are respectively inserted. In this embodiment, the connection pin 18 is a bolt type and the nut 1
After 9 is screwed, it is fixed by the split pin 20.

In this embodiment, the connecting member 17
A traveling wheel 22 is attached to a central portion of the vehicle via a support member 21 so that the traveling wheel 22 travels in the guide rail 23.
Further, an attachment (not shown) for hooking or fixing an object conveyed by the chain conveyor is provided at an appropriate position of the connecting member 17. When this elastic body chain 10 is used, it bends freely at the elastic portion, so that it can be smoothly meshed with the drive sprocket and operated. Although the number of the sprocket engaging holes 15 is two in the above-described embodiment, the present invention is applicable even if the number of the sprocket engaging holes 15 is one or three or more.

[0013]

As is apparent from the above description, the elastic chain according to claims 1 to 3 has a lighter weight than a conventional metal chain because the chain body is made of an elastic material. became. Therefore, it is easy to install and overhaul. Further, since one or more sprocket engaging holes are provided in the middle of the chain body, a plurality of conventional link chains can be integrated, which facilitates the assembly of the chain conveyor and the like. Since the chain body is mainly made of an elastic material such as natural rubber or synthetic rubber, it has high abrasion resistance and corrosion resistance, and color coordination is possible by changing the color of the elastic material. Particularly, in the elastic chain according to the second aspect, since the bushes embedded in the chain body are used in the pin holes formed on both sides of the chain body, the wear resistance of that portion can be enhanced. Further, in the elastic chain according to the third aspect, since the reinforcing fiber or the reinforcing wire is embedded in the chain body, the strength of the elastic material can be reinforced, and a stronger elastic chain can be provided.

[Brief description of drawings]

FIG. 1 is a side view of an elastic body chain according to an embodiment of the present invention.

FIG. 2 is an explanatory view of the elastic body chain.

FIG. 3 is an explanatory diagram of a casting chain according to a conventional example.

[Explanation of symbols]

10 elastic body chain 11 chain body 12 aramid fiber (reinforcing fiber) 13 pin hole 14 connecting part 15 sprocket meshing hole 16 bush 17 connecting member 18 connecting pin 19 nut 20 split pin 21 supporting member 22 running wheel 23 guide rail

Claims (3)

[Claims] 1. The chain main body is made of an elastic material such as natural rubber or synthetic rubber, and has one or more sprocket engaging holes in the middle part and pin holes into which connecting pins are fitted in both side parts. An elastic chain characterized by that. 2. The elastic chain according to claim 1, wherein the pin hole comprises a bush embedded in the chain body. 3. The elastic chain according to claim 1, wherein reinforcing fibers or reinforcing wires are embedded in the chain body.