JPH02175587A - Variable speed conveyor - Google Patents

Abstract

PURPOSE:To optionally set the travelling speed of conveying members by changing contact positions of driving belts with driven wheels by providing endless driving belts on constructionally plural guide wheels, bringing the driving belts into contact with any position on the tapered peripheral surfaces of driven wheels, and mounting travelling wheels and conveying members to each driven wheel. CONSTITUTION:Driven wheels 5 are brought into contact with driving belts 4 travelling on guide wheels 3 to be forcedly energized and rotated. In this case, since the outer peripheral surfaces of the driven wheels are tapered peripheral surfaces, the rotating speed of the driven wheels 5 can be optionally adjusted by moving contact positions of the driving belts 4 frictionally in contact with the tapered surfaces in the axis direction of the driven wheels 5 wholly or partially. Accordingly, for example, in case of the application of the conveyor to an escalator, loading an unloading the step of passengers can be safely performed by optionally selecting the travelling speed of all or some conveying members.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable speed conveying machine that allows a conveying member such as an escalator step to travel at any position in a variable speed manner.

[Conventional technology]

BACKGROUND ART Escalators that run on a plurality of steps have been used to transport people and goods. This escalator is configured such that the step, which is a conveyance member, is supported by a chain that is passed between a driving wheel and a support wheel, and moves around at a constant speed along a circular orbit.
It is not possible to arbitrarily change the speed, such as reducing the running speed during some of the steps. In other words,
All steps run at the same speed.

[Problem to be solved by the invention]

However, escalators with long captains are required for approaches to deep subways, which are strongly required today, and conventional fixed-speed escalators cannot handle the need to quickly transport large quantities of people and goods. There was a problem.

On the other hand, in order to ensure mass transportation, it is possible to increase the speed of the escalator, but simply increasing the speed of the entire escalator poses problems such as the danger of getting on and off the escalator when transporting people.

Also, since a single chain is used to move the steps, in order to be able to change the speed, it is necessary to transfer the steps to a different chain system with a different speed.
This makes the mechanism complicated and makes it difficult to secure installation space.
Furthermore, there were other problems such as the difference in running inertia when a person transferred, making the human body unstable and dangerous.

This invention was made to solve the above-mentioned conventional problems, and the speed of the escalator as a whole is maintained at a high speed, while parts of the escalator, such as the steps at both ends, are sent out at a low speed. The object of the present invention is to provide a variable speed conveyor such as an escalator that allows people and objects to get on and off steps safely and easily, and that can transport large quantities quickly.

[Means to solve the problem]

The variable speed conveyor according to the present invention has a plurality of guide wheels rotatably installed on a structure, and an endless drive band that moves laterally on the circumferential surface of the guide wheels according to the shape of the guide wheels. This drive band is brought into frictional contact with arbitrary positions on the tapered circumferential surfaces of a plurality of driven wheels, and each of these driven wheels is equipped with a running wheel and a conveyance member that rotatably attaches the driven wheels. The structure is as follows.

[Effect]

The passive wheel in this invention comes into contact with the running drive band supported by a guide and is forcibly urged to rotate, but since the outer circumferential surface of the passive wheel is a tapered circumferential surface, it comes into frictional contact with the drive band. The rotational speed of the driven wheel can be arbitrarily adjusted by moving the contact position of the driving band wholly or partially in the axial direction of the driven wheel,
Therefore, by arbitrarily selecting the traveling speed of all or part of a conveyor such as a step, and applying this to an escalator, for example, it is possible to safely get people on and off the steps while sufficiently increasing the conveying speed. .

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing the entirety of this invention. In the figure, 1 is a motor as a driving source, 2 is a driving wheel that is directly rotationally driven by this motor 1, and 3 is a drive wheel placed at a predetermined interval on a structure. This is a guide ring with multiple installations. Further, for example, two endless drive bands 4 are stretched between the drive wheels 2 and the guide wheels 3. In addition, these guide supports 3 are rotatably supported on a structure, and their shape is, for example, an ellipse as shown in Figure 2 at the front and rear ends on the running path, and What is inside is the third
As shown in the figure, it has an oval shape. Depending on the shape and mounting interval of the guide wheels 3, the distance between the driving bodies 4 changes to a width that corresponds to changes in traveling speed. 5 is a spindle-shaped passive wheel with a tapered peripheral surface, and these passive wheels 5 are connected to the drive band 4.
It is in frictional contact with and is driven and rotated. Reference numeral 6 denotes a rotating shaft integral with each driven wheel 5, and running wheels 7 are attached to both ends of this shaft. These running lines 11a7 run on guide rails laid on the structure. Reference numeral 8 denotes a conveying member that serves as a step that rotatably supports the rotary shaft 6 and on which people and objects are placed.

Next, the operation will be explained.

First, when the motor 1 is driven at a predetermined set speed, the driving wheel 2 interlocked therewith is also driven, and the driving band 4 stretched around the driving wheel 2 is caused to travel. Therefore, each driven wheel 5 that is in frictional contact with these drive bands 4 also rotates.

Therefore, the running wheel 7 runs along the guide rail on the structure side, and the conveying member 8 to which this running wheel 7 is attached,
It travels in the opposite direction to the direction of movement of the drive band 4. In this case, the guide wheels 3 have a shape as shown in FIG. 2 at the front and rear ends of the drive bands 4, so the two drive bands 4 are pushed apart from each other in the axial direction, On the other hand, since the other parts have the shape shown in FIG. 3, the two drive bands 4 are maintained close to each other. Therefore, even though the running speed of the drive band 4 is constant, the drive band 4 comes into contact with the positions of different diameter dimensions of each driven wheel 5, so that the driven wheel 5 shown in FIG. 2 rotates slowly, and the third
The driven wheel 5 shown in the figure rotates quickly. Therefore, among the conveying members 8 shown in FIG. 1, the conveying members 8 that run slowly at the front and rear ends as shown in FIG. 2, and at positions outside the front and rear ends, such as the center of an escalator, Third
As shown in the figure, the traveling conveyance member 8 advances quickly. In this way, when a person or object gets on or off the conveyance member 8, the speed of the steps at the position where the person or object gets on and off is reduced, so that the person or object can get on and off safely. A high speed can be achieved with a certain conveyor as a whole. Further, since the change from this high speed to the low speeds at both ends is continuous rather than intermittent, the riding comfort etc. are not deteriorated.

Note that the moving speed of the conveyance member in the above step depends on the tapered shape of the driven wheel 5, the shape of the guide wheel 3,
Alternatively, by arbitrarily selecting the installation position of the guide wheel,
A variable speed conveyor with any speed mode can be constructed.

In addition, this variable speed conveyor is not limited to the escalator mentioned above.
It can also be applied to pallet belt conveyors, moving walkways, etc., and produces the same effects as the above embodiments.

〔Effect of the invention〕

As explained above, according to the present invention, a plurality of guide wheels on a structure are rotatably installed, an endless driving belt is stretched around these guide wheels, and this driving belt is connected to a passive wheel. The drive wheels are in frictional contact with arbitrary positions on the tapered circumferential surface of the machine, and each of these driven wheels is equipped with a running wheel and a conveyance member that rotatably attaches the driven wheels. The traveling speed of the plurality of conveying members provided can be partially set arbitrarily by changing the contact position of the drive band with the driven wheel in the axial direction.If this is used for an escalator, It becomes possible to sufficiently increase the conveyance speed, and it can be used to approach deep underground subways, etc., and extremely beneficial effects can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an embodiment of a variable speed conveyor according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1. FIG. 3. Guide wheel, 4. Drive band, 5. Passive wheel, 7.
Running wheel, 8...conveyance member.

Claims (1)

[Claims] A plurality of guide wheels rotatably attached to a structure, an endless drive band that is stretched around these guide wheels and moves laterally on the circumferential surface of the guide wheels according to the shape of the guide wheels, and this drive band. A plurality of driven wheels each having a tapered peripheral surface that makes frictional contact with a portion of the driven wheels, a running wheel fixed to each of these driven wheels, and a conveyance member to which each of the driven wheels is rotatably attached. Variable speed conveyor.