JPH08108986A - Passenger conveyor - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides a terminal rail that not only eliminates the impact striking sound caused by the clearance between the rear wheel and the terminal rail when the steps are reversed, but also has good durability and maintainability. [Structure] A rail at a traveling transition portion of a terminal rail 23 is cut out, a rail 27 having good wear resistance is provided at that portion, and a rail and a support plate 28 attached to the terminal rail 23 are supported by an elastic body 31. Initially, the rail running surface 27 is located at points E and F. Now, when the rear wheels 11 are guided in the direction of the arrow A1, the running surface 27A is compressed by the weight of the steps and gradually becomes flush with the terminal rail running surface 23A. Next, when the traveling transition point is reached, the rear wheels 11 transition to the traveling surface 27B and the traveling surface 2B.
7B is deflected to the point J, and the impact force at the time of transition is absorbed by the spring action of the elastic body 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger conveyor such as an escalator or an electric road.

[0002]

2. Description of the Related Art In a conventional passenger conveyor, for example, an escalator, in order to eliminate a collision impact sound caused by a clearance between a rear rail of a step roller and a terminal rail in a step reversal portion, Japanese Utility Model Unexamined Publication No. 48-91779. Proposes a belt-shaped elastic body provided on the surface of the above-mentioned travel transition portion so as to slightly project from the rail surface, thereby alleviating vibration and noise generated on the travel transition surface.

[0003]

However, in the prior art,
Since the rear wheel directly absorbs the impact by directly contacting the strip-shaped elastic body, the elastic body is quickly worn and there is a problem in durability and maintainability.

It is an object of the present invention to provide a passenger conveyor provided with a terminal rail which not only reduces vibration and noise but also has good durability and maintainability.

[0005]

In order to achieve the above-mentioned object, the present invention cuts off the contact portion of the terminal rail with the rear wheel, and provides the cut-out portion with a rail having wear resistance equal to or higher than that. , Supported by an elastic body.

[0006]

According to the above construction, since a rail having a good wear resistance is used as a rail to be hit, wear of the rail is small, and the rail is supported by an elastic body, so that the shock is absorbed and vibration and noise are absorbed. Can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

First, referring to FIGS. 3 and 4, an outline of an escalator, which is one of the passenger conveyors, will be described. The escalator has a step drive sprocket 2 and a driven sprocket 3 pivotally supported at both ends of a frame body 1. Engage the step chain 4 in 3. The step chain 4 includes a step plate 5, a support frame 6, a riser 7, a front shaft 8, a rear shaft 9 and rollers 10 and 1 attached to both ends thereof.
Steps 12 constituted by 1 are rotatably mounted on the front shaft 8 at several positions at regular intervals. The drive of the escalator is performed by the drive sprocket 14 of the drive machine 13.
Thus, the sprocket 16 is rotated via the chain 15, and the step drive sprocket 2 mounted at the same center as the sprocket 16 is rotated. As a result, the tread 12
Moves on a fixed rail formed by the front wheel rail 17 and the rear wheel rail 18 at a constant speed via the front and rear wheels 10 and 11.

Next, referring to FIG. 2, the operation of the steps in the step reversal portion at the upper end will be described in the case of rotating in the direction of arrow A1. The front shaft 8 meshes with the sprocket 2 at both ends of the step 12 as shown in the drawing. On the other hand, the rear wheel 11 is guided by the traveling surfaces 23A and 23B of the terminal rail 23 and reversely moves as the front shaft 8 moves. In this case, while the front shaft 8 meshes gradually at the point A of the sprocket 2 and gradually rotates, and the front shaft 8 rotates to the position of the point B, the rear wheel 11
Is guided by the inner running surface 23A of the terminal rail 23, and when the front axle reaches the position of point B, the line connecting the center of gravity G of the step 12 and the front axle 8 coincides with the gravity direction of the center of gravity, However, if it rotates a little from this point B, the step rotates around the front shaft 8 due to the moment due to its own weight. That is,
When the front shaft 8 reaches the point C, the distance between the front shaft 8 and the center of gravity G is deviated by H, the step 12 is rotationally moved as shown by the chain double-dashed line, and the rear wheel 11 is on the outer running surface 23B of the terminal rail. Will be guided in.

In this way, the traveling surface of the rear wheel 11 moves at a certain position on the terminal rails 23A to 23B, and the step 12 is guided in reverse. In such an inverted part,
In order to smoothly guide the rear wheel 11, the diameter D1 of the rear wheel is made smaller than the dimension D between the terminal rail traveling surfaces 23A and 23B to provide a clearance R. Therefore, the rear wheel 11
As a result, it is struck by the traveling surface 23B on the outer side of the terminal rail, causing unpleasant vibration and noise. In order to reduce the clearance R, it is necessary to precisely machine the terminal rail, which requires a lot of labor, and even if the terminal rail is precisely manufactured, the rear wheel diameter D1 varies,
It is very difficult to reduce the clearance R.

Therefore, the present invention, as shown in FIG.
Cut off the rail at the traveling transition point of the terminal rail 23, and wear the rails 27A and 27B with good wear resistance on that portion.
And the supporting plate 28 attached to the terminal rail 23 with embedded bolts or the like is supported by the elastic body 31. First, rail running surfaces 27A and 27B are E in the figure.
It is located at the point and point F. Now, when the rear wheel 11 is guided in the direction of the arrow A1, the running surface 27A is compressed by the weight of the steps 12, and gradually the terminal rail running surface 23 is pressed.
It is on the same plane as A. Next, when the vehicle reaches the traveling transition point, the rear wheel 11 transitions to the traveling surface 27B, the traveling surface 27B bends to the point J, and the impact force at the time of transition is absorbed by the spring action of the elastic body 31. The traveling surface 27B moves outward by that amount, and the track of the rear wheels is also displaced, but since one end of the rail is stopped by pins 29, 30 etc., it gradually returns to the regular track as the rear wheel 11 advances and shifts to the traveling surface 23B. To do. The bending margin when the rear wheel 11 of the elastic body is received is calculated in advance.

When the rear wheel 11 is guided and moved in the direction opposite to the arrow, the traveling surface 27B shifts to the traveling surface 27A in the opposite manner.

[0013]

As described above, according to the present invention, it is possible to provide a passenger conveyor provided with a terminal rail which not only alleviates vibration and noise but also has good durability and maintainability.

Further, the shortening of the life of the rear wheel due to repeated impacts can be alleviated.

[Brief description of drawings]

FIG. 1 is an explanatory view of a terminal rail portion of a passenger conveyor according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an upper reversing unit of FIG.

FIG. 3 is a plan view of the entire escalator.

4 is an enlarged sectional view taken along line XX of FIG.

[Explanation of symbols]

11 ... Rear wheel of steps, 12 ... Steps, 27A, 27B ... Rails with good wear resistance, 31 ... Elastic body.

Claims (1)

[Claims] 1. A passenger conveyor in which front and rear wheels traveling on a rail are connected by an endless chain, and these steps are circulated and driven, and a contact portion with a rear wheel of a reversing terminal rail at both ends is cut off. A passenger conveyor characterized in that a rail having a wear resistance equal to or higher than that of the cut portion is provided and is supported by an elastic body.