JPS582122B2 - Conveyor chain - Google Patents

Description

[Detailed Description of the Invention] Needless to say, a conveyor device is manufactured for the purpose of smoothly and reliably conveying an object continuously, but this device has a so-called hiccup motion in the running direction of the conveyor. Often accompanied by vibration.

This jerking motion is not much of a problem when the purpose is to transport only objects, but when workers work on the objects, such as on an automobile assembly line, the jerking motion can cause symptoms of seasickness. This problem may occur, and an immediate solution to this problem is desired.

Shakuri motion is understood to be self-excited vibration, adhesion, and sliding vibration caused by friction in the conveyor's running mechanism, or forced vibration of the conveyor system due to some external disturbance. Adding special additives to lubricating oil was found to be effective in preventing this.

However, with this method, it is necessary to replenish the lubricating oil at appropriate intervals, and the means for replenishing this replenishment is still far from perfect.

The present invention is a new proposal to solve this problem, and one embodiment thereof will be explained in detail below with reference to the drawings.

In FIGS. 1 and 2, 1 is an outer link plate, 2 is an inner link plate, and 3 is a roller, and these structures are the same as those of a conventionally known chain.

However, in the present invention, the friction plate 4, which constitutes the main part, is attached to the outside of the two outer link plates 1 which are connected to the front and back of the inner link 2 so as to bridge the outer ring plate 1.

The friction plate 4 has two elongated holes 7 in the front and back in the direction of chain movement, and as shown in FIG. Do as you please.

8 is a washer and 9 is a nut.

That is, the friction plate 4 is always pressed against the outer surface of the outer link plate 2 by the constant force of the spring 6, and moves a certain distance along the elongated hole 7 in the direction of the longitudinal force of the chain, and can also pivot around the bolt 5. It has become.

It is assumed that this friction plate 4 is continuously attached to all outer link plates over the entire length of the conveyor chain.

Next, its effects will be explained.

In general, the jerking motion of a chain requires not only vibration of the chain as a whole, but also expansion and contraction of the chain.

That is, when the friction plate 4, which is a feature of the present invention, is attached, a frictional force is generated between the friction plate 4 and the outer link plate 1 by the push spring 6, and the frictional force directly acts as a braking force against expansion and contraction of the chain. .

This braking force very effectively suppresses chain expansion and contraction, or jerking motion.

This is the principle of the present invention, which is a new technical concept that has never been thought of before.

When the chain meshes with the sprocket wheel and bends, the friction plate 4 is displaced as shown in Figure 4, but since this displacement occurs on the outside of the chain, there is no need to make any major modifications to the sprocket side. do not have.

Further, as a friction surface, a suitably lubricated steel-to-steel combination is usually sufficient, but the energy loss associated with the above displacement is extremely small.

It is also important to further improve the damper function by providing an appropriate lining to the side of the friction plate that is in contact with the outer link plate.

Finally, in Fig. 1, all such friction plates are installed on the two front and rear outer link plates 1 that sandwich the inner link plate 2, but depending on the application, they may not necessarily be installed on all the outer link plates, but may be installed at appropriate intervals. It may be installed on each outer link plate, or it may be installed on the inner link plate instead of the outer link plate.

In some cases, they can be placed on only one side of the chain instead of on both sides.

Further, the two elongated holes 7 in the friction plate 4 may be one, and the other may be round holes.

According to the above explanation, a conveyor chain equipped with the device of the present invention can realize stable and smooth running of the conveyor without any jerking motion that was previously unavoidable. By increasing the mass, it can provide an effective buffering effect even under rapid speed fluctuations of conveyors, etc., and its significance in bringing about industrial progress as a conveyor chain is extremely important.

[Brief explanation of the drawing]

1 and 2 are a plan view and a front view of a conveyor chain according to the present invention, and FIG. 3 is an enlarged sectional view taken along the line 1--2 in FIG. 1. Figure 4 shows the state in which it meshes with the sprocket wheel. 1... Outer link plate, 2... Inner link plate, 3... Roller, 4... Friction plate, 5... Bolt, 6...
Pressing spring, 7...long hole, 8...wascher, 9...nut.

Claims (1)

[Claims] 1. Both ends of the friction plate, which has elongated holes in the front and rear in the chain traveling direction, are attached to two outer (or inner) link plates at the front and back in the chain traveling direction, and an inner (or outer) link plate is attached to the front and back in the chain traveling direction. The long hole and the outside (or inside)
By means of a tightening bolt that passes through the link plate and is supported by a pressure spring, the friction plate is crimped onto the outer surface of the outer (or inner) link plate so that it can slide in the direction of chain travel and around the bolt, and also is attached to the outer surface of the outer (or inner) link plate. A conveyor chain characterized by a link plate crimped on at least one side. 2. Pass both ends of the friction plate, which has long holes in the front and back in the direction of chain travel, over the two outside (or inside) link plates in the front and back in the direction of chain travel, as if the inside (or outside) link plates were proud of each other. long hole and outside (or inside)
A conveyor chain in which a friction plate is crimped to the outer surface of an outer (or inner) link plate so that it can slide in the chain traveling direction and around the bolt by a tightening bolt that penetrates the link plate and is supported by a pressure spring. A conveyor chain characterized in that a friction plate is crimped onto at least one side of the link plate, and a lining is provided on the side of the friction plate that is in contact with the outer (or inner) link plate.