JPS6136537Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a drive chain of a spiral escalator that ascends and descends while surrounding a cylinder in a spiral manner.

Various proposals have been made for spiral escalators in the past, and one of them, for example, as in Japanese Patent Application No. 56-55900, is a single drive in which the center of a fan-shaped step is supported and guided by a spiral guide roller array. There is one that is driven by a chain and has an upper sprocket that reverses the steps, the lower side of the raceway that runs backwards in a spiral, and the lower sprocket that reverses the steps so that it is endless.

An example of this conventional device will be described below with reference to the drawings. Figure 1 is a side view of the entire spiral escalator, Figure 2 is a plan view of Figure 1, and Figure 3 is a side view of the entire spiral escalator.
FIG. 4 is a partial expanded view of the step seen from the center O of the cylinder 1 in FIG. 1, and FIG. 5 is an enlarged view of a portion of FIG. 2. be.

In FIG. 1, 14 is the lower floor of the escalator, 15 is the upper floor of the escalator, and between these is an inner cylinder having sufficient strength to support the weight of the spiral escalator and the mechanical force applied by the escalator drive device. 1 is installed. The height between the floors 14 and 15, ie the height of the building, is designated by H. 2 is an escalator step, which has a fan-shaped planar shape surrounded by two radial straight lines passing through the center point 13 of the spiral escalator and two concentric circles passing through the center point 13, as shown in Figs. It is supported and moved by one drive chain 18 shown in FIG. 4 is the inside handrail, 3
is the outer handrail, and the center point 13 of this step 2
The surrounding area is designed to move at the same angular velocity as in step 2.

Now, if the sprocket 2 and the handrails 3 and 4 rotate clockwise in FIG. 2, the escalator will go up, and if they rotate counterclockwise, it will go down. In the following description, it is assumed that the escalator rotates clockwise.

Reference numeral 5 denotes a floor plate which has a planar shape opposite to that of the floor plate 6, and also has a guide plate 7 and a opposite-sided guide plate, although not shown. Passengers step onto step 2 of the horizontal movement section of the escalator from above the floorboard 5. Ascend according to the movement of step 2, and when you go up by H, you will reach the 16th line, pass through the horizontal area until the 17th line, proceed to the upper floor plate 6, get off the escalator, and arrive at the upper floor 15. . The guide plate 7 guides the passengers onto the floor 15 and prevents them from falling onto the lower step, which is much lower.

There is a chain sprocket 19 shown in FIGS. 4 and 5 in the lower central part of the floor plate 6, and the drive chain 18 is driven by this and is reversed 180 degrees to move the step 2 below the step 2 seen from above.
is at the bottom, and the drive chain 18 is at the top. There is also a chain sprocket (not shown) below the floor plate 5 in the lower layer, which causes the step 2 to turn 180 degrees again and return to the state shown in FIGS. Repeat. Reference numeral 11 denotes a space for accommodating a chain sprocket in the lower layer. This chain sprocket is a driven type, and the drive chain 1 of step 2
It rotates by the movement of 8. It is fitted with a tensioning device (not shown) for applying tension to the drive chain 18. 20 is step 2
The front wheels 21 are provided on both the left and right ends of the step 2.
The rear wheels are installed at both the lower left and right ends of the escalator, and the escalator runs on guide rails 22 and 23 that are spirally provided in the ascending and descending section of the escalator. 24 is front wheel 2
A roller pin 25 is provided below the step 2 at an approximately midpoint between the chain sprocket 19 and the rear wheel 21.
A guiding sprocket installed on the reversed part of the
It engages with the roller pin 24 and guides the step 2 during reversal. Reference numeral 2a is a connecting rod whose one end is attached to the lower surface of the substantially central portion of the step 2, and whose other end is rotatably connected to the meshing portion 18a of the drive chain 18 by a pin 2b.

Next, an example of a method for driving this spiral escalator will be described.

Now, for the sake of simplicity, the ascending operation state will be explained. First, the driving machine 26 drives the sprocket 28 via the chain 27, so that the chain sprocket 19, which is coaxial with the sprocket 28, rotates clockwise, and the endless drive chain 18 that meshes with it is driven. The drive chain is supported and guided by a spiral guide roller row 29, which supports the cylindrical center direction force that acts when tension is applied to the drive chain 18, and the center of the step 2 connected to the drive chain 18 via a connecting rod 2a. Line X-
so that X always passes through the cylinder center 13 (step 2
(the inner and outer angular velocities are equal). In other words, support in the left and right direction on the slope of step 2 is provided by the drive chain 18 and the guide roller array 29.
The step 2 is supported in the vertical direction by the front wheels 20 and rear wheels 21 running on spiral guide rails 22 and 23, respectively.

In the reversing section, roller pins 24 provided at both left and right ends of the step 2 are engaged with a guiding sprocket 25 that rotates coaxially with the chain sprocket axis to guide the step 2 during reversal. At the reversal section, the front wheel 20 and the rear wheel 21 are mounted on guide rails 22, 23.
It is in a free state without any support or guidance. Therefore, in the inclined part, the ratio of circumferential speeds inside and outside the step is the ratio of the cylinder radius, but in the inverted part, the ratio of circumferential speeds inside and outside the step is the same. Guide sprocket 25 and roller pin 2
4, the step 2 is reversed in the tangential direction of the cylinder, moves backward in a spiral shape on the lower side of the ascending track by the drive chain 18, and repeats the circular motion endlessly.

By the way, since the driving chain 18 of such a conventional spiral escalator has conventionally configured the surface facing the guide roller row 29 to be uniformly flat, during operation of the escalator, the spirally configured guide roller row 29 It was not possible to repeat the repeated contact and separation smoothly, and this caused vibrations and noise, which worsened the riding comfort.

The present invention was developed in view of the above points, and an object of the present invention is to provide a drive chain for a spiral escalator that does not induce vibration or noise.

FIG. 6 is a detailed diagram showing the engagement relationship between the drive chain and the guide roller array according to the present invention, and shows one embodiment of the present invention. In the figure, 180 is a drive chain according to the present invention, which includes an inner link plate 181 having a curved surface with a radius of curvature corresponding to the guide roller surface 200 forming a helical locus, a planar outer link plate 182, a chain roller 183, and a universal joint. 184. On the other hand, the guide roller row 29 is composed of a plurality of guide rollers 291,
The guide rollers 291 are rotatably attached to the roller case 293 by pins 292, and the roller surfaces 200 of the plurality of guide rollers 291 draw a spiral trajectory.

With the above configuration, the approach angle when the inner link plate of the drive chain contacts the front guide roller can be reduced, so the drive chain and the guide roller can always make smooth contact, which will avoid inducing vibration and noise. There is no fear.

Next, FIG. 7 shows another embodiment of the present invention.
In FIG. 7, reference numeral 181' indicates an inner link plate which is machined into two planes instead of a curve, and the rest is exactly the same as in FIG. 6. That is, the inner link plate 181' has two symmetrical inclined surfaces with the center portion being slightly depressed. Even with this configuration, the approach angle when the inner link plate of the drive chain comes into contact with the guide roller located forward in the traveling direction can be made small, so that vibration and noise can be similarly prevented.

[Brief explanation of drawings]

Figure 1 is a side view of the entire spiral escalator, Figure 2 is a plan view of Figure 1, and Figure 3 is a side view of the entire spiral escalator.
Figure 4 is an enlarged perspective view of the step in Figure 1.
Part of the developed view seen from the center O of cylinder 1 in the figure, No. 5
The figure is an enlarged view of a part of FIG. 2, FIG. 6 is a detailed view showing one embodiment of the present invention, and FIG. 7 is a detailed view showing another embodiment of the present invention. 2... Fan-shaped step, 18, 180... Drive chain, 29... Guide roller row, 181, 18
1'...Inner link plate, 182...Outer link plate, 183...Chain roller, 18
4... Universal joint.

Claims (1)

[Scope of utility model registration request] In an apparatus for driving a fan-shaped step along a spiral trajectory by a drive chain supported and guided by a spiral guide roller row, the surface of the drive chain that comes into contact with the guide roller row has a concave shape in the center. A spiral escalator drive chain featuring: