JPS6214474B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a passenger conveyor driven by a tread link that engages a drive installed between an outbound rail and a return rail.

2. Description of the Related Art Conventionally, there are pallet-type passenger conveyors shown in FIGS. 1 and 2 that continuously transport people from an airport ticket gate to an airplane departure and arrival point. In FIGS. 1 and 2, 1 is a main frame arranged horizontally under the floor, 2 is a drive chain gear provided at one end of the main frame 1, and 3 is a drive chain gear provided at the other end of the main frame 1. Drive chain gear 2 and driven chain gear 3
Although not shown, each has a pair, and an endless roller chain 4 is wound around between the driving chain gear 2 and the driven chain gear 3 which face each other, and there is a constant interval between the roller chains 4. A large number of tread plates 6 are attached so as to be continuous with no gaps between the tread plate shafts 5 which are attached across from each other, and further, tread rollers 7 are attached to both ends of each of the tread plate shafts 5. Further, an outgoing guide rail 8 on which the treadle roller 7 rolls is disposed on the outgoing side of the chain 4, and a return rail 9 is arranged on the return side of the chain. Reference numeral 10 denotes a drive device consisting of an electric motor and a speed reducer installed on the drive chain gear 2 side of the main frame 1. This drive device 10 and the drive chain gear 2 are linked via a chain transmission mechanism, and the drive device 10
By rotating the drive chain gear 2, the chain 4 is moved and the treadle 6 is moved.

However, in the chain-driven passenger conveyor as described above, in order to stably invert the treadle 6 so as not to interfere with the operation of the conveyor, it is necessary to rotate the treadle 6 around the outer circumference of the chain gear using the chain-wrapped portions at both ends. , a guide device with which the tread roller 7 of the tread plate 6 is rollingly engaged must be installed. However, such a guide device complicates the structure of both ends of the conveyor, makes installation and adjustment of the guide device complicated at the installation site, and generates vibration and noise due to collision between the guide device and the tread roller. There were flaws.

This invention was made in order to eliminate the above-mentioned conventional drawbacks, and the distance between the roller rolling surfaces of the outgoing rail for guiding the tread rollers and the return rail at the end of the conveyor is adjusted by adjusting the distance between the roller rolling surfaces of the outgoing tread roller guide rail and the return rail at the end of the conveyor by an endless tread link that drives the conveyor. It is an object of the present invention to provide a passenger conveyor in which the pitch is made equal to the pitch of , thereby making it possible to stably and smoothly invert the treadle at the end of the conveyor even without a guide device.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5. In these figures 3 to 5,
Reference numeral 20 denotes a main frame disposed horizontally under the floor surface, and channel-shaped outgoing rails 21 and 22 are fixed horizontally along the longitudinal direction of the main frame 20 on the left and right inner sides of the upper part of the main frame 20, respectively. Furthermore, channel-shaped return rails 23 and 24 are fixed horizontally along the longitudinal direction of the main frame 20 on the left and right inner sides of the lower part of the main frame.
As shown in FIG. 4, the ends of the outbound rails 21, 22 and the return rails 23, 24 are both open, and other members such as conventional reversing guide rails are not connected. Not yet. 25, 26
2 is an endlessly connected tread link disposed over almost the entire length of both the outgoing rail and the return rail, which are vertically opposed to each other. The connecting interval of the link bodies 27, that is, the pitch p of the tread links 25 and 26 is equal to the above-mentioned upward and downward forward path at both ends. Roller rolling surfaces 21a, 23 of rails 21, 22 and return rails 23, 24
a, which is equal to the distance H between 22a and 24a. Further, a tread shaft 28 is installed horizontally between the tread links 25 and 26, passing through the connecting points of the opposing link bodies 27 in the across direction.
At both ends of each tread shaft 28, tread rollers 29, 30 are rotatably mounted to be engaged and rolled in the left and right outbound rails 21, 22 and return rails 23, 24, and are coupled to each other in the front and rear directions. A tread plate 31 is provided between each adjacent tread shaft 28, 28.
are installed in a continuous manner. The total circumferential length of the tread links 25 and 26 is the length of the outgoing rail 21,
22 and the return rails 23 and 24, and the distance H between the reversed portions at both ends (H×
The length is set to be longer than the sum of 2), and the length is such that one roller in a free state that does not engage with any rail is generated at each reversal portion. 32 connects the above-mentioned tread links 25, 26 to the outbound rails 21, 22 and the return rails 23, 24.
This drive device 32 is installed between the outbound rail and the return rail, and includes a roller chain 32a that meshes with the sprocket teeth 27a of the tread links 25 and 26, and It consists of a sprocket 32b to be wound around, an electric motor (not shown) for rotating the sprocket, etc. In addition, 33 is a handrail arranged on the main frame 20 along the running direction of the step board 31.

Next, the operation of the passenger conveyor of the present invention constructed as described above will be explained.

When the drive device 32 is started and the roller chain 32a is driven to run in the direction of the arrow in FIG. 3, the forward and return sides of the footboard links 25 and 26 that engage with the upper and lower horizontal parts of the roller chain 32a move at the same speed. 3, and the treadle 31 also rolls on the rolling surfaces 21a, 22a and 23a, 24a of the outgoing rails 21, 22 and the return rails 23, 24. The tread link 2 is moved by the tread rollers 29 and 30.
5 and 26 will be operated in the same direction.

On the other hand, at both open ends of the outgoing rails 21, 22 and the return rails 23, 24, that is, at the inverted portion of the treadle 31, as the outgoing and return sides of the treadle links 25, 26 are moved in the directions of arrows A and B,
The most advanced tread roller 2 on the outbound rails 21 and 22
9 and 30 are the outward rails 21 and 30 as shown in FIG.
22, and the return rail 2
The rearmost tread rollers 29'', 30'' on 3, 24 move at the same speed in the direction away from the open ends of the return rails 23, 24, and at the same time, the tread rollers 29', 29', which are in a free state and protrude from the outbound and return rails, move at the same speed.
30' is moved towards the open end of the return rails 23,24. The tread rollers 29, 30 and 29', 30', 2 are in the state shown by solid lines in FIG.
When 9'' and 30'' are in the state shown by the two-dot chain lines, the adjacent treadle 31, which is V-shaped as shown on the left side of FIG. 3, is shifted to the right-angled state shown on the right side of FIG. Therefore, on the left side of FIG. 3, the treadle on the outbound rail side is sequentially reversed and transferred to the return rail side, and on the right side of FIG. 3, the treadle on the return rail side is sequentially reversed and transferred to the outbound rail side. At this time, a pair of tread rollers 29', 3 protruded from the outbound and return rails.
0' reverses while drawing a constant trajectory (almost equivalent to a parabola), and since the distance H between the roller rolling surfaces of the outgoing rail and the return rail is equal to the pitch P of the tread links 25 and 26, the tread reverses. The treadle rollers 29, 30 contact the roller rolling surfaces 21a, 22a and 23a, 24a of the outbound and return rails tangentially and do not collide.

As described above, according to the present invention, the distance between the roller rolling surfaces of the outbound rail for guiding the tread rollers and the return rail at the end of the conveyor is made equal to the pitch of the endless tread link that drives the conveyor, so that the tread When the reversing portions at both ends perform a reversing operation, at least one pair of the two pairs of tread rollers that guide the treadle is engaged with the outbound and return rails, and moreover, during the reversal process of the treadle, it is in a free state. Since the treadle rollers placed on the treadle are reversed along a fixed trajectory, there is no need to provide a treadle guide device at the treadle reversal section unlike in conventional chain-driven passenger conveyors. This eliminates the generation of vibration and noise caused by the tread roller colliding with the guide device, and simplifies the structure of the tread inversion section, reducing conveyor manufacturing costs. By simply adjusting the distance between the roller rolling surfaces, the tread roller can be brought into tangential contact with the roller rolling surfaces, and vibrations during reversal can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the entire conventional passenger conveyor, FIG. 2 is a side view showing details of the reversing part of the tread plate, FIG. 3 is an overall side view showing an example of the passenger conveyor according to the present invention, and FIG. The figure is a side view showing details of the treadle reversing portion in the present invention, and FIG. 5 is a sectional view taken along the line - - in FIG. 4. 20... Main frame, 21, 22... Outbound rail, 23,
24...Return rail, 21a, 22a, 23a, 2
4a...Roller rolling surface, 25, 26...Tread link,
28...Treadle shaft, 29, 30...Treadle roller, 31...
Stepboard, 32...drive device. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. An endless tread link is constructed by connecting a large number of link bodies having teeth that mesh with a drive device installed between the outgoing rail and the return rail for tread guide at a predetermined pitch, and this tread link In a passenger conveyor that is driven to run by rolling rollers provided on the outbound and return rails along the outward and return rails, the ends of the outbound and return rails at the ends of the conveyor where the tread links reversely operate are on the same vertical plane. The spacing in the vertical direction of the roller rolling surfaces at the open ends of both rails is set to be the same as the connection pitch of the link body, and furthermore, The circumferential length is set to be longer than the sum of the lengths of the rolling surfaces of the outbound and return rails and the distances between the ends of both rails, so that one roller at the reversal section can move between the two rails. A passenger conveyor characterized in that it is a free roller that does not engage with any of the rollers. 2. The passenger conveyor according to claim 1, wherein the rollers are respectively arranged at connecting portions of the link bodies.