JPH08231169A - Passenger conveyor - Google Patents

Abstract

PURPOSE: To check any collision between a turnover rail and a semicircular rail of a roller by connecting a step chain to an intershaft to be situated at a rear side in the traveling direction, while forming a turnover path at a position in parallel with a turnover locus of the roller supported by the shaft, and guiding the roller supported by the shaft to be situated at the front side with the turnover path. CONSTITUTION: A symmetrical pair of front and rear-side rollers 6 and 7 are supported each on both front and rear parts of the lower part of a passenger conveyor footboard 5 by a frame body 5A, and an endless step chain 9 is connected to the rear side roller 7 and the main shaft 5C. This step chain 9 is wrapped on a tip 10A of a chain pulley 10, thereby advancing the footboard 5 forward. In time of this onward movement, the front side roller 6 ravels in a turnover path 28 formed in space between a turnover rail 13 synchronously rotating with this chain pulley 10 and a semicircular rail 17 for turnover use. With this constitution, the footboard 5 is dropped by its own weight in and around an inlet part of the turnover path 28, making the front side roller 6 turn over as shifting naturally, through which such a possibility that this front side roller 6 may repeat its collision at the turnover path 28 is thus prevented from occurring.

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 electric road for transporting passengers, and more particularly to a tread structure thereof.

[0002]

2. Description of the Related Art As a conventional passenger conveyor, for example, the structure described in JP-A-61-203089 is known. As shown in FIG. 6, the passenger conveyor 1 has a main body frame 3 which holds the entire strength under the floor of a building floor 2 to be installed, and is endlessly connected to the main body frame 3 from one entrance / exit opening (not shown). Provided are a plurality of treads 5 that move to the other entrance / exit 4, a pair of left and right front and rear rollers 6 and 7 mounted on each tread 5, guide rails 8 for guiding these rollers 6, 7, etc. Composed. Although not shown in FIG. 6, each tread 5 is connected by a tread chain, and this tread chain is wound around a chain wheel 10. The chain wheel 10 and the drive chain 12 are connected to each other. When the rotational force in the direction of arrow A is applied by the driven machine 11, the tread plate 5 moves in the direction of arrow B. FIG. 7 which is an enlarged view of the main part of FIG. 6 and X of this
_As shown in FIG. 8 which shows one half of the cross section taken along the line _3- X ₃ , the chain wheel 10 is fixed to the inside of the chain wheel 10 together with the reversing rail 13 that rotates synchronously, the rotary shaft 14, A rotating body such as a drive chain 15 around which the drive chain 12 is wound is supported by the shaft support member 16 and the main body frame 3. Further, the shaft 5B attached to the frame body 5A of the tread plate 5
The tread plate chain 9 and the front roller 6 connected to each other are wound around the addendum 10A of the chain wheel 10, and the tread plate 5 itself is reversed while rotating. Further, the rear roller 7 at the axial end of the shaft 5C attached to the frame 5A of the tread plate 5, X ₄ -X 7
_As shown in FIG. 9 which is a cross-sectional view taken along the line _4, it is reversed while rotating along the reversing rail 13, and at this time, the rotation path on the side opposite to the reversing rail 13 is restricted by the semicircular rail 17.

As shown in FIG. 10, when the distance between the front roller 6 and the rear roller 7 is W ₂ and the distance between the rear rollers 7 is W ₃ with respect to the tread width W ₁ , as shown in FIG. 10, W ₁ <W ₂ , W ₁ < It is manufactured with a dimensional relationship of W ₃ <W ₂ , and moves in the direction of arrow B, that is, toward the driving machine 11 side. The depth L of the tread 5 in the longitudinal direction is about 0.4 m, and each set weighs about 20 kg.

[0004]

The above-mentioned conventional passenger conveyor has a very general structure and is widely used, and its performance is also highly evaluated. With the passenger conveyor,
There is a demand for quieter, vibration-free and comfortable ride performance, and improvements in this regard are being demanded. That is, in the conventional passenger conveyor described in FIGS. 6 to 10, when the rear roller 7 transfers from the linear guide rail 8 to the circular reversing rail 13,
When the rear side of the tread 5 is reversed, centrifugal force acts on the semicircular rail 17 as shown by an arrow P in FIG. 11, and the collision sound at this time and the sound emitted by the driving machine 11 synergize with each other and generate vibration. This creates a rather uncomfortable situation. This is because the front roller 6 and the tread chain 9 together with the chain wheel 1 via the shaft 5B.
Since it is wound around the outer periphery of 0, it rotates orderly as shown by arrow R, while as shown in FIGS. 9 and 11, the rear roller 7 rotates between the reversing rail 13 and the semicircular rail 17. The gap g necessary for
This occurs because the rear roller 7 can move freely within the range of. Moreover, as shown in FIG. 11, since the semi-circular rail 17 is supported by the main body frame 3 by the fixture 19, noise and vibration are generated in the entire vicinity of the entrance / exit 4.

In order to reduce noise and vibration, for example, a cushioning material is provided on the outer periphery of the roller, or when the semicircular rail 17 is attached to the main body frame 3, the fixture 19 is interposed via the cushioning material.
, Or by moving it along the guide rail with a U-shaped cross section as it is without using the semicircular rail 17, and setting the interval accurately so that vibration energy due to centrifugal force does not increase. The method of doing it is possible. However, in either case, the number of parts and the number of processing steps are increased, and the increase in cost cannot be avoided.

The present invention has been made in view of the circumstances of the prior art as described above, and an object thereof is to reduce the collision noise and vibration at the time of reversing the treads without increasing the number of parts and the number of processing steps in the future. It is to provide a passenger conveyor that can.

[0007]

To achieve the above object, the present invention provides a plurality of treads endlessly connected to each other and movable from one entrance / exit to the other entrance / exit, and the progression of each of these treads. A shaft having rollers attached to the ends thereof, a tread chain that connects one of these shafts, and a chain wheel that moves the tread chain by engaging with the tread chain. In a passenger conveyor provided with a drive means for rotationally driving a chain wheel and a reversing path for guiding a roller attached to the other shaft of the shafts by a reversing part, the tread chain is located on the rear side in the traveling direction. The inversion path is formed so as to draw a reversal locus of the same diameter at a position parallel to the reversal locus of the roller supported by the shaft positioned on the rear side and supported by the shaft positioned on the front side. A pair of rollers It is characterized in that so as to move the rolling path.

In this case, it is preferable that the distance between the rollers attached to the rear shaft is set wider than the distance between the rollers attached to the front shaft.

[0009]

With the above construction, the shafts located on the rear side in the traveling direction are connected by the tread chain, and the tread chain prevents movement in the reversing path due to the centrifugal force of the prior art, and is positioned on the front side in the traveling direction. Since the roller supported by the shaft moves inside the reversing path, it falls by the weight of the tread itself near the entrance of the reversing path and the roller supported by the shaft located on the front side naturally reverses. To do. This prevents the roller, which is not connected to the tread chain, from repeatedly colliding in the reversing path as in the conventional case. In addition, conventionally, the roller supported by the shaft located on the rear side of the tread on which the centrifugal force is applied is smoothly inverted while being restricted by the tread chain connected to the shaft supporting the roller. It is possible to reduce collision noise and vibration caused by force.

In the above structure, if the distance between the rollers on the rear side in the traveling direction is widened, the conventional arrangement of the shafts on the rear side and the front side in the traveling direction of the passenger conveyor is exchanged, and the tread chain is connected to the rear side shaft. Only by doing so, noise reduction can be achieved without causing any increase in parts or man-hours.

[0011]

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

FIG. 1 is an enlarged side view showing a tread inverting portion, which is a main portion of a passenger conveyor according to an embodiment of the present invention.

At the lower part of the footboard 5, a pair of left and right front rollers 6 supported by a frame 5A is provided at the front part thereof, and a pair of left and right rear rollers 7 supported by the frame 5A is provided at the rear part thereof. ing. Its main shaft 5C and rear roller 7 as shown in detail in FIG. 2 is a sectional view taken along the X ₁ -X ₁ line in FIG. 1, the endless tread plate chain 9 is connected, the step board Chen 9 It is wound around the addendum 10A of the chain wheel 10. The chain wheel 10 rotates together with the rotary shaft 14, and like the conventional example shown in FIG. 6, the drive chain wheel 15 to which the rotational force is transmitted from the drive machine 11 through the drive chain 12.
Interlock with.

On the other hand, the front roller 6 is located at a portion indicated by a chain double-dashed line in FIG. 2, and is attached to the chain wheel 10 as shown in FIG. 3, which is a sectional view taken along line X ₂ -X ₂ in FIG. The vehicle runs in a reversing path 28 formed between the reversing rail 13 and the semi-circular rail 17 for reversing that rotate in synchronization with a gap g.

As can be seen from this description, the endless tread chain 9 is connected to the shaft 5B of the front roller 6 in the past, whereas in the present embodiment, the tread chain 9 is connected to the shaft 5C of the rear roller 7. , And the rear roller 7 travels in the reversing path 28 in the past, whereas the front roller 6 travels in the reversing path 28 in the present embodiment.

[0016] step board 5 for allowing the above configuration, unlike the conventional example shown in FIG. 10, with respect to the tread plate width W ₁ as shown in FIG. 4, the spacing of the front roller 6 and W _4, When the distance between the rear rollers 7 is W ₅ , W ₅ > W ₄ > W ₁
Therefore, the distance W ₅ between the rear rollers 7 is slightly larger than the distance W ₄ between the front rollers 6 located on the arrow B side, which is the direction of travel by the drive unit (not shown). Therefore, the front roller 6 travels on the reversing path 28 between the reversing rail 13 and the semicircular rail 17 having a narrow width.

FIG. 5 shows the case where the tread 20 is reversed.
Will be explained.

As shown in FIG. 5, the main shaft 5B of the front roller 6
Does not have a connection relationship with the step chain 9, so that the regulation on the side of the chain wheel 10 which has been received by winding the step plate chain 9 around the addendum 10A of the chain wheel 10 as in the conventional art can be released. become. Therefore, the weight of the front roller 6 and the front portion of the tread plate 5 causes the shaft 5B and the front roller 6 to move in the falling direction as indicated by the arrow S, and moves along the guide surface 13A of the reversing rail 13. After moving, it moves along the semicircular rail 17 as indicated by arrow U. Tread chain 9
It is similar to the conventional rear roller 7 in that it does not have a connection relationship with the conventional rear roller 7, but since the centrifugal force P unlike that of the conventional rear roller 7 does not act, the reversal formed between the reversing rail 13 and the semicircular rail 17 is reversed. When moving in the path 28, a gap g is substantially maintained between the semi-circular rail 17 or the reversing rail 13 located above the front roller 6. Moreover, the rear roller 7 is connected to the tread chain 9, and the tooth tip 10 of the chain wheel 10 is
Since it moves while being restrained on the A side, the centrifugal force P as in the conventional case does not act. Therefore, the front roller 6 does not vibrate about the shaft 5C of the rear roller 7,
As a result, the collision noise between the front roller 6 and the reversing rail 13 or the semi-circular rail 17 is minimized, and the noise and vibration near the entrance / exit, which is synergistic with the operation of the drive machine, is significantly reduced. .

Further, in the above-described embodiment, the conventional front roller 6 is made to travel in the reversing path 28 formed between the reversing rail 13 and the semi-circular rail 17 by releasing the connection with the tread chain 9, while Conventional inversion rail 13 and semi-circular rail 17
Since the rear roller 7 that was designed to travel in the inversion path 28 formed between the rear roller 7 and the tread chain 9 is connected, the front roller 6 having the conventional shaft 5B can be used as the rear roller 7. In addition, since the rear roller 7 having the conventional shaft 5C can be used as the front roller 6, the configuration of this embodiment can be easily achieved by changing the mounting positions of the same parts. .

In the above-described embodiment, the front roller 6 which is disengaged from the tread chain 9 is made to travel in the reversing path 28 formed between the reversing rail 13 and the semicircular rail 17, and the rear roller 7 is also provided. Is connected to the tread chain 9, and the distance between the rear rollers 7 is made larger than the distance between the front rollers 6 of the tread 5 so that the parts can be shared. The interval of 6 may be larger than the interval of the rear roller 7.

[0021]

As described above, according to the present invention, the tread chain is connected between the shafts located on the rear side in the traveling direction, and the position is parallel to the reversing locus of the roller supported by the shaft located on the rear side. Since an inversion path is formed so as to draw an inversion path of the same diameter, and the roller supported by the shaft located on the front side moves along the inversion path, centrifugal force acts on the roller located on the front side. Without falling, the weight of the tread drops along the reversing path, so that at the time of reversing, the collision between the reversing rail and the semicircular rail of the roller not connected to the tread chain is suppressed. As a result, collision noise and vibration can be reduced, and a passenger conveyor that is quiet and has little vibration can be provided.

Further, by setting the interval between the rollers supported by the shaft located on the rear side in the traveling direction to be wider than the interval between the rollers supported by the shaft located on the front side, the parts of the passenger conveyor from before have been set. Can be shared, and the number of parts and processing man-hours do not increase,
The noise of the passenger conveyor can be reduced without increasing the cost.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of a passenger conveyor according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line X ₁ -X ₁ of FIG.

FIG. 3 is a sectional view taken along line X ₂ -X ₂ in FIG.

FIG. 4 is a perspective view showing a tread plate of the passenger conveyor shown in FIG. 1.

5 is a side view showing the movement of the main part of the passenger conveyor shown in FIG. 1. FIG.

FIG. 6 is a side view showing a conventional passenger conveyor.

7 is an enlarged view of a main part of the passenger conveyor shown in FIG.

8 is a cross-sectional view taken along line X ₃ -X ₃ of FIG.

9 is a sectional view taken along line X ₄ -X ₄ of FIG.

10 is a perspective view showing a tread plate of the passenger conveyor shown in FIG.

11 is a side view showing the movement of the main part of the passenger conveyor shown in FIG.

[Explanation of symbols]

 5 Tread 5B, 5C Shaft 6 Front Roller 7 Rear Roller 9 Tread Chain 10 Chain Chain 13 Reversing Rail 17 Semicircular Rail 28 Reversing Road

Claims (2)

[Claims] 1. A plurality of treads which are connected endlessly and are movable from one entrance / exit to the other entrance / exit, and are arranged in front of and behind the advancing direction of each of these treads, and end portions support rollers. A shaft, a tread chain that connects one of these shafts, a chain wheel that engages with the tread chain to move the tread chain, drive means that rotationally drives the chain wheel, and the other of the shafts In the passenger conveyor provided with a reversing path for guiding the rollers attached to the shaft of the reversing portion, the tread chain connects the shafts located on the rear side in the traveling direction and is supported by the shaft located on the rear side. The inversion path is formed so as to draw an inversion path having the same diameter as the inversion path of the roller in parallel with the inversion path of the roller, and the pair of rollers supported by the shaft located on the front side moves along the inversion path. Squared characterized by Conveyor. 2. The gap between the rollers supported by the shaft located on the rear side is set wider than the gap between the rollers supported by the shaft located on the front side. Passenger conveyor as described.