JPS60220251A - Automatic tensing device for long chain transmission system - Google Patents

Abstract

PURPOSE:To automatically make constant the tension of a long chain transmission system by setting the number of teeth of a main sprocket 2 for a clutch to be larger than that of teeth of a clutch sprocket. CONSTITUTION:A power sprocket 1 is mounted on the motive shaft 101 of a prime mover M, and drives a driving sprocket 7 via a motive chain 102. The long chain transmission system is indicated by chain lines travels within a vessel C in a zigzag arrangement while being guided by transmission sprockets mounted on both ends of a lot of support shafts S. In this case, the number of teeth of driven sprockets 117 is selected to be slightly smaller than that of teeth of the driving sprocket 2, and the chain parts of the long chain transmission system A are automatically tensed through respective clutches. The sprocket 3 for the clutch can make a slide rotation with respect to the support shaft S.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic tensioning device for long chain systems with loads. This type of long chain system may be a non-circulating long chain system, such as the hoisting equipment used in mines or elsewhere, or it may be a long chain system that circulates through a number of processing baths. In some cases, it is a circulating type long chain system, but in the following explanation, we will use the circulating type as an example, but in the case of a non-circulating system, which has a simpler structure, we will use the circulating type. It can be easily inferred from this.

In long chain systems with this kind of load, the long chain The chain stretches under a large amount of tension, so in order to keep it under tension and drive it, it is necessary to install an automatic tension device, or to install DC drive motors in various parts of the long chain system and use electronic control. Devices that automatically adjust the speed of the chain to take up the slack between each chain interval have been used, but speed deviations tend to accumulate, and although the equipment is expensive, The effect is unsatisfactory, and those skilled in the art have been trying to find a simple and effective method for a long time.
They requested the realization of a long chain tension device. In addition, as a simple chain tension device,
A dancer-roller device may also be available, but for example, if a large number of packets, wire-mesh type, or porous-type processing object containers are attached, the load on the long chain system is large, and the dancer-roller is Not only was it difficult to pass through something like this, but the tension on the chain was localized and problematic. A combination of adjusting screws and springs may be used instead of space-consuming devices such as dancer rollers, but in any case it must be noted that the tension on the chain system is localized. do not have.

An object of the present invention is to provide a novel automatic tensioning device for a long die M, which drives a chain system while applying substantially uniform tension over almost the entire length of the chain.

The gist of the present invention for solving the above technical problems is as disclosed in the claims listed in the header.

The embodiment shown in the drawings will be described in detail below, and an example will be shown below in which the embodiment shown in the drawings is arranged outside the device to heat food, etc. This is just an example, such as transforming a "rotating type" into a "unidirectional long arrangement" conveyor, or transforming a "tank" more generally into a "support structure". It is possible to transform the "packet" into a "load body" by turning it into a film. In addition, "loading" is a long chain nephew, ~ A, Cal L □. □Eh, ah, good weight.
Therefore, a rotatable arrangement is also possible.

The illustrated embodiment is of a fixed location type.

Now, FIG. 1 is a plan view of the apparatus according to the present invention, and shows the tank C.
It is divided into left and right sides, and is slightly separated into two tanks.
This is just an example of heating the object to be processed (for example, food) at different temperatures in two stages; Since these are not related to the inventive concept f of the present invention, they will be explained using the same reference numeral C. Note that the tank C on the left side of FIG. 1 is shown with its lid removed, and the tank C on the right side of the same figure is shown with the lid 100 sealed. In addition,
In FIG. 2, the lid 100 is shown in a state where it is attached to both the left and right tanks C.

FIG. 2 is a side view of the apparatus shown in FIG. 1.

Note that although Fig. 2 shows a situation in which the long chain 9A moves up and down in a zigzag pattern and rotates in and out of the tank C as a whole, Fig. 1 shows the complexity of the drawing. To avoid this, illustration thereof is omitted and only a large number of support shafts S are shown.

FIG. 3 is a partially enlarged plan sectional view showing the main parts of the apparatus of the present invention shown in FIGS. 1 and 2. The left side of tank C, only a portion of which is shown, is inside the tank, and the right side is inside the tank. It is outside the tank.

In FIGS. 1 and 2, M is a prime mover that can be an electric motor, and is placed on a support P attached to the front end of the tank C, but its position is, of course, convenient. It can be placed in any other suitable location.

The prime mover M is fixedly disposed on a support P, and the support P is fixed to one end of the tank C (the left end in FIGS. 1 and 2).

101 is a driving shaft coming out of the prime mover M, a power sprocket 1 is attached to it, and a driving chain 1 is attached to it.
02 to drive the drive sprocket 7.

This drive sprocket is connected to the second bearing shaft S (counting from the left end in Figures 1 and 2) (many of these bearing shafts are parallel to each other, and one shaft is arranged vertically in a zigzag pattern inside the tank C). (with the end slightly protruding outside the tank).

- An enlarged detail 5 at the end opposite to the above (lower end in Fig. 1) of the second support shaft S from the left end in F is fixedly attached to the long chain transmission system A. (bucket chain, as it is commonly called) is a hook. This situation is also the same for the upper half of Figure 3.
Long chain? The illustration of A is omitted in FIG. 1, and in FIG. 2 it is simply shown schematically by separating it with a chain line.

D is a bearing, and each end of each of the support shafts S is rotatably supported on the wall of the tank C.

In this example, what is exemplified as the "long chain transmission system" referred to in the gist of the present invention is a sprocket chain mechanism, which is a transmission sprocket attached to both ends of a large number of support shafts S.

It is designed to run in a zigzag arrangement in the tank C while being guided by the water tank 5, but is the zigzag arrangement vertical (so-called vertical diving when there is liquid in the tank) as shown? , or in the horizontal direction called side diving (
(not shown) or any other suitable arrangement, such as a horizontal straight arrangement, is determined on the rightmost bearing shaft S) of the tank C via Ibroque 1 and 5. Go outside, sprocket 103.104.105.1
06, and passes through the last sprocket 7-106 to the left along the bottom of tank C, completing the process and recirculating again.

do.

A chain 12 belonging to the auxiliary chain system F is stretched around this drive sprocket 2, and the chain 12 is a dual-wheel integrated type that is attached under friction to the next-stage support shaft S shown in the upper half of Fig. 3. It is interlocked with the passive sprocket 117 on the left side in FIG. 3 of the clutch sprocket 3. In addition, the chain 12' is passed to the drive sprocket 118 on the right side, and interlocks with the next stage clutch and chi sprockets (see Figure 1). The next stage clutch sprocket 3'' (first
(see figure), etc., 8-Aea, -Jun1A4). As long as □□ and KA61□, the same interlocking can be repeated. Chain 12.12', 12''...
... constitutes a sub-chain system F.

Reference numeral 119 is an oil valve (see third stage), which is a clutch sprocket for the support shaft S.

9 is a clutch plate fixed to the bearing shaft S, and 10 is a brake plate interposed between the passive sprocket 11.7 and the clutch plate 9. ing. The two-wheel integrated type clutch sub-blocks y1, 3' and 3 of the next stages have almost the same structure as 3 mentioned above.

Furthermore, since the number of teeth of the passive sprocket 117 is selected to be slightly smaller than that of the driving sprocket 2, its rotation is accordingly selected to be slightly faster than that of the driving sprocket 2, and therefore, there is an equivalent gap between the two. This has the effect of automatically tensioning the chain part of the long chain chain A through the respective clasps and chins. The degree of tension can be adjusted by adjusting /) 120, and this nut 1
When tightening 20 strongly, the tension of the corresponding part of the long chain soi A becomes stronger.

The structure and function of each stage of the chain 2, chain 3, etc. can be obtained in the same way as above, but the constituent parts 12', 12'', etc. of the sub chain system F are at constant speed with respect to each other. The number of teeth on the clutch sprocket is selected accordingly.

Therefore, power is transmitted from the prime mover M to the power sprocket 1, and further transmitted to the clutch sprocket 2 via the drive sprocket 7 and the like.

From the twist, the transmission chain 12 rotates the twin-wheel integrated A1 club, the chisel sprocket 3, and therefore its partial sprocket 103, and the transmission chains 12', 12'', etc.
・Each Claratis Procera from Nani 2 to 3) 3/,
3//... etc. rotate at the same time.

In this example device, the length of the tank C is drawn to be the shortest length due to the size of the drawing, so the clutch sprocket is only shown up to 3" of the tank C. When the length of C is long, it can be any number such as 10 or 20, in other words, when n is a positive integer, /% n 1. Each clutch sprocket 3', 3'' at n1...
Transmission chain 12', 1.2' chain that interlocks...
Accordingly, (n-1) transmission lines are arranged, and the transmission arrangement between the front stage and the rear stage is selected to be a zigzag arrangement.

An important feature of the present invention is that the number of teeth of the clutch main sprocket 2 is greater than the number n of teeth of the clutch sprocket 3 by Δn, for example, 1 tooth or 2 teeth, so that the sprocket 3 has more teeth than the sprocket 2. It rotates as fast as the difference in numbers. Since the rotation of the support shaft S as a driven shaft is transmitted through the frictional force between the brake plate 10 attached to the clutch plate 9 and the sprocket 2, the tension of the bucket chain A is caused by the compression of the spring 4. When the frictional force between the sprocket 3 and the brake plate 10, which is adjusted by the force, is exceeded, a slip phenomenon occurs between the sprocket 3 and the brake plate 10, and the rotation is shifted to the shaft 1 and the support shaft S will no longer be transmitted. It goes without saying that the larger the number and magnitude of loads such as -11= (bucket) B, the larger the load.

When the packet chain A is stretched, the tension of the chain becomes less than the frictional force between the members 3 and 10, and rotation is again transmitted to the support shaft S.

It is maintained in this state.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a preferred embodiment of the present invention, FIG. 2 is a schematic side view thereof, and FIG. 3 is a partially enlarged plan sectional view of the main part thereof. C...tank, P...support stand, S...support shaft, D...
・Bearing, F...Sub-chain system, 12-1...Dynamic chain sprocket, 2.7...Drive sprocket, 3.3', 3''...Clutch sprocket,
5... Sprocket, 12.12', 12''... Chain, 103.104.105.106.107.1
08 sprocket, 119... oil bush, 1
17...Passive sprocket, 9...Clutch plate, 1
o...brake plate, 120...adjusting nut, 4...spring, 11...driven shaft. Patent applicant Asahi Kogyo Co., Ltd. Figure 3 1...

Claims (1)

[Claims] In a circulating or non-circulating long chain transmission system that is arranged to run while being guided by a number of transmission sprockets and has a load, a secondary chain that runs in parallel along at least a portion of the chain transmission system. A chain system is provided, and the secondary chain system includes a drive sprocket placed at the start of the chain and rotating at the same speed as the running speed of the long chain transmission system, and a series of sprockets with cracks and sprockets disposed at intervals following the drive sprocket. , the driven side of these sprockets with clutches when viewed from each clutch is integrally interlocked with the appropriate idler sprocket in the long transmission system, and the sprocket of the sprocket with clutch in the auxiliary chain system, The long sprocket is characterized in that the number of teeth is reduced by a certain number over the entire drive sprocket compared to the driving sprocket at the beginning so that the speed increases by a small difference ΔV when the running speed is V. Automatic tensioning device for chain transmission systems.