JPS6240274B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to steps (hereinafter referred to as steps) for passenger conveyors mainly used in curved escalators.

A curved escalator is known that has a conveyance path in which the intermediate portion between both horizontal ends is inclined in the vertical direction and the horizontal projection plane is curved. In such escalators, the steps move in three dimensions in the middle of the transport path, and the step guide rails also move in three dimensions.
It has a dimensional curved shape. For this reason, it is difficult to manufacture guide rails etc. with precision, and the sides of the tread cleat of a step and the riser cleat of an adjacent step may come into contact, or the tips of these cleats may touch the bottom of the groove between the cleats on the other side. This can cause vibrations and noise while running, and these are especially noticeable at upper and lower bends where the steps change relative to each other from horizontal to staircase-like or vice versa. There were flaws.

By providing a cleat contact prevention roller, this invention prevents contact between a tread cleat and a riser cleat of an adjacent step even if the precision of parts such as guide rails is reduced to a level that is easy to manufacture. The object of the present invention is to provide a step that can eliminate the disadvantages of the passenger conveyor, prevent accidents, and extend the life of the passenger conveyor.

An embodiment of the present invention will be described below with reference to the drawings.

In Figures 1 to 3, 1 is the main frame of the curved escalator, 2 is a conveyance path provided in the main frame 1 and curved in the horizontal projection plane, and 3 is the conveyance path along the longitudinal direction of the conveyance path 2. Parapets erected on both sides, 4 a movable handrail supported by the balustrade 3, 5 a step constituting the conveyance path 2, the step 5 being driven by a drive machine (not shown) by a left and right step chain 6. The moving handrail 4 is also driven in synchronization with step 5.

As shown in FIGS. 3 to 5, the step 5 is provided with a step frame 8 on the back side of a tread plate 7 on which a tread cleat 7a is formed, and one end of this frame 8 in the front-rear direction serves as a step shaft. 9 to the left and right step chains 6, a step roller 10 provided on the step shaft 9, and a step roller 1 pivoted to the other end of the step frame 8.
1 are supported by guide rails 12 and 13, respectively, and a riser 14 having a riser cleat 14a formed on its surface is provided at the end of the treadle 7 on the side opposite to the step shaft 9. A large number of them are arranged along the longitudinal direction. Further, a vertical side roller 15 is supported by a guide rail 16 and is attached to the step frame 8 so as to protrude from the left side surface in FIG. In addition, the above-mentioned rails 12, 13,
16 are fixed to the main frame 1, respectively. As shown in FIG. 6, the tread cleats 7a protrude every other from one end of the tread 7 and are fitted between the riser cleats 14a of adjacent steps 5 with gaps in the width direction. A gap is formed in the front-rear direction between the groove bottoms 14b and 7b between the tip of the cleat and the mating cleat. Figures 3 to 5
Step frame 8 as shown in FIG.
A bracket 18 is fixed to one end with a screw 17, and a cleat contact prevention roller 19 protruding from one end of the tread plate 7 is pivotally attached to the tip of the bracket 18 with a horizontal shaft 20. It is fitted between riser cleats 14a of adjacent steps 5 instead of one of the tread cleats 7a. As shown in FIG. 7, the tread cleat 7a and the riser cleat 14 of the adjacent step 5 are
When the thickness of a (step width direction dimension) is t, and the thickness of the cleat contact prevention roller 19 is T, then T>
t, the gap in the step width direction between both cleats 7a and 14a is A, and the gap in the width direction between the cleat contact prevention roller 19 and riser cleat 14a is C, then C<A, and the tip of cleat 7a and cleat 14a are When the gap between the groove bottom 14b between the cleat 14a and the groove bottom 7b between the tip of the cleat 14a and the cleat 7a is B, and the gap between the groove bottom 14b between the outer peripheral surface of the cleat contact prevention roller 19 and the cleat 14a is D, D< The relationship is B.

Step 5 of the curved escalator configured as described above is carried out by driving the step chain 6 to move from one horizontal end through an upward or downward curved section, an intermediate section where the horizontal projection plane is curved in an arc shape, and a lower or upper curved section. At the other horizontal end, step rollers 10 and 11 roll on guide rails 12 and 13, and side rolls 15 roll on guide rails 16, respectively, while being guided by the rails 12, 13, 16. During this movement, especially when the two adjacent steps at the upper and lower bends are relatively displaced from horizontal to stepped or vice versa, the side surface of the part of the tread cleat 7a of step 5 protruding from one end of the tread 7 Adjacent step 5
When the riser cleat 14a of
The side surface of the cleat contact prevention roller 19 comes into contact with the riser cleat 14a, and the contact prevention roller 19
rotates, and when the tip of the tread cleat 7a or riser cleat 14a attempts to contact the groove bottom 14b or 7b between the other cleats, the outer peripheral surface of the cleat contact prevention roller 19 touches the groove between the riser cleats 14a. The contact prevention roller 19 rotates in contact with the bottom 14b. Therefore, since the sides of the tread cleat 7a and the riser cleat 14a and their tips do not come into contact with the groove bottoms 14b, 7b, vibration and noise are prevented, and the adjacent steps maintain a normal relative position between the cleats. It will be run. In addition, the meshing between the demacom and the riser becomes normal, and an accident in which the passenger's footwear or the like is caught in the gap between the riser and the footboard due to the meshing becoming disengaged is prevented, resulting in safety. Furthermore, even if the relative position of two adjacent steps deteriorates due to wear of the rails and step chains over time, the relative position can be corrected by providing cleat contact prevention rollers, so the passenger conveyor It can extend the lifespan.

In this invention, the cleat contact prevention rollers are preferably made of metal or hard synthetic resin, and two cleat contact prevention rollers can be arranged at intervals in the width direction of one step to prevent cleats 7a, 14.
The gap between the tip of the groove a and the groove bottoms 14b and 17b can be substantially eliminated. Furthermore, if the groove between the riser cleats has a colored finish such as paint, installing cleat contact prevention rollers on both outer edges of the step will make it less noticeable if the finish peels off or wears out. You can improve your appearance.

The above explanation has been made regarding the case where the present invention is applied to a curved escalator, but the present invention can also be applied to a straight escalator or a moving walkway. If the cleat of a step comes into contact with that of an adjacent step, adding a cleat contact prevention roller as in the above embodiment can prevent the cleats from coming into contact with each other, making it easier to dispose of the step. It is possible to extend the life of straight escalators that have been used for many years without having to do so.

As explained above, the step of the passenger conveyor according to the present invention is equipped with a cleat contact prevention roller that fits between the riser cleats with a gap smaller than the gap between the tread cleat and the riser cleat of the adjacent step. Even if the accuracy is lowered to the extent that it is easy to manufacture parts such as
This prevents contact between the tread cleat and the riser cleat of the adjacent step, and between the tip of the cleat and the groove bottom of the opposing cleat, allowing the step to run smoothly without vibration or noise. Furthermore, safety can be improved by preventing passengers' footwear from getting caught in the conveyor, and the life of the passenger conveyor can be extended.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a passenger conveyor equipped with a step according to an embodiment of the present invention, FIG. 2 is a schematic front view of the same, FIG. 3 is an enlarged sectional view taken along the line - Fig. 5 is an enlarged view of the part shown in Fig. 1, Fig. 5 is a side view taken along the - line in Fig. 4, Fig. 6 is an enlarged view of the part shown in Fig. 4, and Fig. 7 is an enlarged cross-section of the part shown in Fig. 5 taken along the - line. It is a diagram. 5... Step, 7... Treadboard, 7a... Tread cleat, 7b... Groove bottom, 8... Step frame, 14... Riser, 14a... Riser cleat, 14b... Groove bottom, 18... Bracket, 19
... Cleat contact roller. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A large number of steps are arranged adjacent to each other to constitute a moving conveyance path, and a tread cleat is provided on the upper surface of the step, and a riser cleat is provided on the riser part of the step, so that the upper surface of the tread cleat is The opposite end of the riser is arranged with a gap between the riser cleats of the other adjacent steps, and a large number of the steps run horizontally and inclined and are vertically relative to the adjacent steps. A cleat that is displaceable and is pivoted below the top surface of the step, protrudes between the riser cleats of the adjacent step, and is arranged with a gap smaller than the gap between the tread cleat and the riser cleat of the adjacent step. A step for a passenger conveyor characterized by being equipped with contact prevention rollers.