JPH0515624U - Cable drag chain sliding protection structure - Google Patents

Abstract

(57) [Summary] [Purpose] To protect the cable drag chain when the cable drag chain that supports and guides the power cable for supplying power to the moving body and the hydraulic hose slides along with the movement of the moving body. To provide the structure of. [Structure] The sliding protection structure is used in a cable drag chain in which a plurality of bendable link bodies, each having an upper side and a lower side of a pair of link plates that are spaced apart and opposed to each other, are flexibly connected and a cable, hose, etc. are housed inside. A protective shoe is provided on the lower side of the pair of link plates. Since the cable drag chain moves while being supported by the protective shoe on the surface for slidingly guiding the cable drag chain, it does not come into direct contact with the sliding guide surface. As a result, the sliding noise generated with the movement of the cable drag chain is reduced, and the main part of the cable drag chain is not worn.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is directed to a cable drag chain that supports and guides a power cable for supplying power to a moving body, a hydraulic hose, and the like (hereinafter simply referred to as "cable") when sliding along with the movement of the moving body. Concerning the structure for protecting the chain.

[0002]

[Prior Art]

 Conventionally, one end of this type of cable drag chain 10 (see FIG. 6) is connected to a moving body M such as a machine tool that linearly reciprocates or a transport vehicle that transports heavy objects, and the other end is connected to the moving body M. It is often fixed to the floor F near the power source that sends power. Therefore, the cable drag chain 10 is U-shaped, and the length of the upper part (the part floating from the floor F) and the length of the lower part along with the movement of the moving body M. Is changing. As shown by the solid line in FIG. 6, when the upper portion becomes long, the amount of bending increases due to its own weight, the weight of the cable (not shown), and the like, so that it is supported by the sliding guide surface 12. Therefore, one surface 13 of the cable drag chain 10 slides on the slide guide surface 12 as the moving body M moves.

[0003]

[Problems to be solved by the device]

 However, one surface 13 of the cable drag chain 10 supported by the support plate 12 is flat as shown in FIG. 7, and the entire surface is in contact with the sliding guide surface 12 in a solid contact state. For this reason, the cable drag chain 10 has a problem that sliding noise and wear occur due to sliding.

[0004]

[Means for Solving the Problems]

 The present invention relates to a cable drag chain for accommodating a cable, a hose or the like inside by flexibly connecting a plurality of link bodies in which upper and lower sides of a pair of spaced apart and opposed link plates are coupled to each other. The structure in which a protective shoe is provided on the lower side of the link plate solves the above problem.

[0005]

[Action]

 The cable drag chain moves while being supported by the protective shoe on the surface for slidingly guiding the cable drag chain. Therefore, the main part of the cable drag chain is protected from abrasion and the like due to sliding.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. The cable drag chain 20 (see FIG. 1) is a machine tool that linearly reciprocates, or a moving body M such as a transporting vehicle that carries heavy objects, and a floor F near a power source that sends power to the moving body M. It is connected between the two and stores and protects a cable (not shown). The cable drag chain 20 may be connected between moving bodies.

The cable drag chain 20 (see FIG. 2) includes a pair of link plates 21 and 22 facing each other and a connecting rod 25 for connecting the upper side 23 and the lower side 24 of the link plates 21 and 22 to each other. It is formed by connecting a plurality of link bodies 27 composed of 26 and 26 in a freely bendable manner. The link body 27 is connected by connecting pins 34 and 335 (34 is not shown) formed on the link plates 21 and 22 and fitting holes 36 and 37. Between the connecting rods 25 and 26, a partition 28 that divides the inside of the cable drag chain 20 is provided. The link plates 21 and 22, the connecting rods 25 and 26, and the pieces 28 are resin molded products.

Protective shoes 40, 41 are provided on the lower sides 24, 24 of the pair of link plates 21, 22, respectively. The lower side 24 is an edge where the upper link plate and the lower link plate face each other when the cable drag chain 20 is bent in a U shape as shown in FIG. The protective shoes 40, 41 (see FIG. 3) project outside the outer surface 29 of the connecting rod 26 and also project outside the side surfaces 30, 31 of the link plates 21, 22. Both ends of the protective shoes 40, 41 provided on each link plate 21, 22 are close to the adjacent protective shoes (see FIG. 1, one protective shoe 41 is not shown), and the protective shoes seem to be continuous. It has a shape. Further, both ends of the protective shoes 40 and 41 are formed along the arc surface of the link plate so that the cable drag chain 20 does not come into contact with the adjacent protective shoes when the cable drag chain 20 is bent in a U shape as shown in FIG. ing.

Since the cable drag chain 20 (see FIG. 4) is in a state of being supported on the support plate 42 by the protective shoes 40 and 41, one surface 32 of the cable drag chain 20 and the support plate 42 are separated from each other. A gap S is formed between them. The support plate 42 is installed on the floor F within the range in which the cable drag chain 20 is omitted in the middle of FIG. Therefore, the entire one surface 32 of the cable drag chain 20 does not come into contact with the support plate 42, and the sliding noise generated when the cable drag chain 20 moves on the support plate 42 causes the protective shoe 40, Only the sliding noise of No. 41, which is smaller than before. Moreover, since the protective shoes are shaped so as to be adjacent to each other, the cable drag chain 20 can be smoothly guided. Further, when the cable drag chain 20 moves, only the protective shoes 40, 41 wear, and the cable drag chain 20 itself does not wear and is not damaged.

Further, the protective shoes 40, 41 (see FIG. 4) prevent the cable drag chain 20 from contacting the guide plates 43, 44 by the portions 45, 46 projecting to the outside of the link plates 21, 22. Can be prevented. Therefore, the traveling of the cable drag chain 20 is stable.

Further, as shown in FIG. 5, when there is no support plate 42 and one cable drag chain 20 is bent in a U shape and overlaps, one surface 31 1, 31 of the cable drag chain 20 is There is no direct contact, and the sliding noise generated at the overlapping portion of the cable drag chain 20 is reduced. Also in this case, only the protective shoes 40 and 41 are worn and the main part of the cable drag chain 20 is not worn, so that the cable drag chain 20 is less damaged.

The cable drag chain described above is an open-type cable drag chain with a gap between adjacent connecting rods, but there is no gap between adjacent connecting rods and there is an overall seal. Even with a closed and closed cable drag chain, a protective shoe can be provided. Further, it may be an integral type having no connecting rod.

[0013]

[Effect of the device]

 In the sliding protection structure of the present invention, since the protective shoe creates a gap between the cable drag chain and the surface for slidingly guiding the cable drag chain, the cable drag chain moves on the sliding guide surface. It is possible to reduce the sliding noise generated at that time, and also to prevent the main part of the cable drag chain from being worn.

[Brief description of drawings]

FIG. 1 is a front view of a cable drag chain including a protective shoe of the present invention.

FIG. 2 is a perspective view showing a part of the cable drag chain of FIG.

FIG. 3 is a left side view of FIG.

FIG. 4 is a side view of the cable drag chain guided by a support plate.

FIG. 5 is a side view of a portion where one cable drag chain is bent in a U shape and overlapped.

FIG. 6 is a front view of a conventional cable drag chain without a protective shoe.

7 is a cross-sectional view taken along the line 7-7 of FIG.

[Explanation of symbols]

 20 cable drag chain 21,22 link plate 23 upper side of link plate 24 lower side of link plate 25,26 coupling rod 27 link body 40,41 protective shoe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Nishimura 4-17 96 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Inside Tsubakimoto Chain Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A cable drag chain for accommodating a cable, a hose or the like by flexibly connecting a plurality of link bodies in which upper and lower sides of a pair of spaced apart and opposed link plates are coupled to each other. Sliding protection structure for cable drag chains, which is equipped with a protective shoe on the lower side of the link plate.