JPS58207207A - Chain - Google Patents

Abstract

PURPOSE:To reduce the size and the weight of a drive means by shifting the center of a bush of a front shaft which is fixed to a connecting link, from the centers of pins for connecting the links. CONSTITUTION:The center of a bush 11 engaged with a step front shaft which is fixed to a connecting link 12 is shifted by B from the centers of pins 7 which connect links 6 together. Step chain having high destruction strength may be constituted at the same pitch as that of a unit link of a step chain having low destruction strength. In a bulky man conveyor, the size of a sprocket which drives step chains may be reduced, namely, the drive means may be made smaller and more lightweighted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to Che 7, and particularly to sterabutene suitable for use in a passenger conveyor with a high floor height.

Fig. 1 is a diagram showing the related components of the step of the passenger conveyor and the stellate chain that drives it.
It is towed and driven by stevedier chains 5 fixed on both sides. FIGS. 2 and 3 show the entire detailed structure of the stele butcher 5, and a chain is constructed by rotatably connecting a pin 7 fixed to an outer link 6 and a bush 9 fixed to an inner link 8.

A roller 10 is fitted into the bush 9 to smoothly guide the engagement with the teeth of a sprocket that drives the check 7. The steps 1 are fixed at regular intervals to the stair buttress 5, and connecting links 12 having bushings 11 for fitting and fixing the front shaft 2 of the steps 1 are attached at regular intervals.

The bush 11 of the connecting link 12 is co-centered with the bin 7 as shown in FIG. Now, the tensile strength at break of the sterabutene 5 is generally determined by the strength of the outer link 6 or the inner link 80. In other words, the tensile force causes the outer link 6 and the bottle 7 to
The inner and outer links are broken from the fixing hole part or the fixing hole part of the inner link 8 and bushing 9. Therefore, the greater the breaking strength, the thicker the plate thickness of the link, or the greater the width of the link. The diameter of the roller 10 also becomes larger. Since the dimensions of the front shaft of step 1 are fixed, the diameter of the bushing 11 fixed to the connecting link 12 is constant, but the dimension of the outer link 60 that connects with the connecting link 12 is increased, and the dimension is indicated by 8 in Fig. 3. When the width of the bush 11 becomes narrower, the gap G between adjacent links becomes smaller, and if G becomes smaller than the diameter of the bush 11, the pitch P of one link must be increased.

This means that the number of links of the stellate chain 5 per step becomes smaller, the sprocket (not shown) for driving the stellate buttress 5 becomes larger, and the dimensions and weight of the drive device increase. In recent years, there has been an increasing demand for reducing the installation area of passenger conveyors, and even passenger conveyors, which have a high floor height and require a sterile chain 5 with high breaking strength, need to be made as small and lightweight as possible. However, as mentioned above, the conventional structure of the Stella Butchen 5 has the problem that if the capacity exceeds a certain level, the pitch of the chain link becomes large, and this requirement cannot be met.

The purpose of the present invention is to solve the above-mentioned problems, and to provide a check 7 suitable for use in a high-head man conveyor, in which the pinch length of one link is not changed even in the case of a check 7 having a high breaking strength, and the drive device is made smaller and larger. There is something to do.

In the present invention, the center of the front shaft bush fixed to the connecting link and the center of the pin connecting the links are shifted, and even if the link size is large, the pinch P of one link is not changed, and the drive is driven with a 74% type check 7. This allows the device to be used.

An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. This figure shows a cheno with high breaking strength.

Outer link 6, inner link 8. In addition to the increased width and plate thickness of the stencil printer 12, the pins 7 and bushings 9. The diameter of roller 0 is also increased. For this reason, the adjacent outer links 6 move closer to each other than shown in FIG.
1 is installed by shifting it from the center where pin 7 is connected by the dimension shown by B. That is, the center of the connecting chino 12 and the center of the bush 11 of the connecting link 12 are shifted by B.

In this way, the pinch length P of one link is /J', and the capacity is 11:i', '1. Since a large-capacity chain 7 can be constructed, the sprocket that drives the chain can also be made smaller and lighter. can.

Now, the steps of a passenger conveyor run not only on flat straight roads, but also on curved roads and slopes, and the steps can be arranged horizontally or in a stair-like manner. On a curved road that is changing from a horizontal state to a stairway state, as shown in FIGS. Guided to 15. In the figure, the distance between the connecting links 12 is the length of five chain links, and it is shown that the dimension of one step corresponds to the length of five chain links.

Since only the front wheel 3 is guided on the curved rail, the chain bends around the connecting link 12, and the five links between the connecting links become straight.

In other words, as shown in the figure, when the length of one link is P, the length is 5.
P is linear and does not change. But Nakaji luck fia
r IJ link bushing center-to-center dimensions L l , L 2
becomes as follows.

R is the radius of curvature of the pin center position of Che 7 on the curved rail,
B is the deviation between the pin center of the chain 7 and the center of the bush of the connecting link, P is the pitch length of one chain link, and is the number of chains between the connecting links. Ll becomes larger than the length NP of one step, and Lt becomes smaller than the length NP of one step. That is, on a curved road, adjacent steps will move away from each other or approach each other. As can be seen from the equations Lt and Lx, this amount of change increases as the gap B between the bush 11 of the connecting link 12 and the pin of the chain becomes larger, and decreases as the center radius R of the chain on the curved rail increases. .

The length NP of one step of a general Niman conveyor is approximately 41
0m, and the gap between adjacent steps is 3-4W. Therefore, it is necessary to suppress the amount of change in the step interval on a curved road to a maximum of about 2 m. To satisfy this condition, the deviation B between the bush and the pin must be 12++ m or less, and the radius of curvature R may be 2500 m or more. By the above combination, a passenger conveyor using the large-capacity ceno according to the present invention can be established.

As described above, according to the present invention, a step chain with high breaking strength can be constructed with the same pitch as the pitch of one link of a step chain with low breaking strength, so even on a passenger conveyor with a large floor height, the dimensions of the sprocket that drives the step chain can be reduced. This has the effect of making the drive device smaller and lighter. In addition, by appropriately selecting the amount of friction between the bushings and pins and the radius of curvature of the curved rail, it is possible to provide a passenger conveyor with no abnormalities in step running.

In one embodiment, an example is shown in which the present invention is used in a passenger conveyor, but the same effect can be obtained by using it in a general cargo conveyor or the like.

[Brief explanation of the drawing]

Fig. 1 is a close-up view explaining the assembly relationship between the step of the man conveyor and the stencil chain, Fig. 2 is a partial cross-sectional structural view of the stencil chain, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a diagram of the present invention. FIG. 5 is a sectional structural view of a large-capacity stamp chain according to an embodiment. FIG. 5 is an explanatory view of the structure on the curved rail of FIG. 4. 1...Step, 2...Front shaft, 5...Step chain, 6...Outer link, 7...Bin, 9.11...
・Butshu 12...Connection link. Agent Patent Attorney Akihana Takahashi-”'・-m-γ ゛1'11:.

Claims (1)

[Claims] 1. In a t-en in which the left and right ends of a connecting link, which has a bushing for attaching the front shaft of the step, etc. approximately in the center, are connected to the adjacent left and right outer links via bottles, respectively, the center of the bushing hole is The cheno is characterized by being placed offset from the center line connecting the centers of the left and right bottles.