JP2000159464A - Variable-speed passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with link mechanisms for interconnecting consecutive pallets from variable-speed passenger conveyors of a type where pallets are adjustable in their interval. SOLUTION: This variable-speed passenger conveyor comprises low-speed driving chains 4 engaged with pallets and driven at a constant low speed, high- speed driving chains 8 driven at a constant high speed, acceleration driving chains 6 for driving the pallets at an accelerated speed, and deceleration driving chains 10 for driving the pallets at a decelerated speed. The plural acceleration and deceleration driving chains 6 and 10 are driven by respective accelerating and decelerating motor means each actuated individually by a single motor. The accelerating and/or decelerating driving chains 6 and/or 10 are a plurality of driving chains adapted to operate at an independent speed and/or acceleration and mesh with at most one set of pallets at one time to drive them only. The variable-speed passenger conveyor is thus simplified in its acceleration/ deceleration sections.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable-speed passenger conveyor, and more particularly to a variable-speed passenger conveyor suitable for accelerating / decelerating the speed of a pallet, which is a passenger loading section.

[0002]

2. Description of the Related Art In a passenger conveyor that assists passengers in moving in the horizontal direction, if the transportation takes a long distance, it takes a long time to move the passenger conveyor. Many variable speed types that make the speed relatively slow have been devised.

The variable-speed passenger conveyor is roughly divided into a system in which belt conveyors and rollers having different speeds are changed, a system in which a pallet on which passengers are slid is set to a variable speed in an oblique direction, and an interval between pallets is expanded and contracted. There is a method of realizing a variable speed by using the method. The transfer method is, for example,
In Japanese Patent Application Laid-Open No. 6-15693, the skid method is described in, for example,
No. 0 discloses this.

Further, as a method of expanding and contracting the pallet interval, for example, Japanese Patent Publication No. Sho.
In addition, there is disclosed a method in which a pallet is driven by engaging a pallet with a gear or a chain at a constant speed portion. In these systems, the front and rear pallets are connected using a link mechanism for connecting the pallets, and the pallets in the acceleration / deceleration portion are configured to be driven in association with the traveling of the pallets driven in the constant speed portion. .

Japanese Patent Laid-Open Publication No. 5-246672 discloses a method of sequentially accelerating and decelerating the acceleration section / deceleration section at a constant speed and sequentially engaging a plurality of driving members having different speeds.

[0006]

Generally, in a variable-speed passenger conveyor of the type in which the pallet interval is expanded or contracted, pallets appear continuously (with no gap) from under the floor of the landing and become a passenger's boarding section, and the pallet is placed in the middle section. Increase the interval and accelerate,
At the descending end, the distance between the front and rear pallets is reduced again, the pallets are brought into contact with each other to eliminate the gap, and the operation of being sucked under the floor at the landing is repeated.

In the above-mentioned conventional example, a method of connecting the front and rear pallets by a link mechanism is adopted. This method (1) complicates the structure and increases the number of parts.
(2) The speed increase ratio of the variable speed type is restricted by the length of the link. (3) Since the force acting on the link is large, it is necessary to increase the strength of the link, which results in an increase in the size and weight of the device. There are problems such as bringing.

In Japanese Patent Laid-Open Publication No. Hei 5-246672, since a plurality of driving bodies each moving at a constant speed are sequentially engaged,
There is a problem that the speed of the pallet changes step by step, and the riding comfort is not improved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a variable-speed passenger conveyor having a good ride comfort by eliminating the need for a link mechanism for connecting front and rear pallets.

[0010]

In order to achieve the above object, there are provided a number of pallets for carrying passengers thereon, a low-speed driving means for driving the pallets at a first speed in a first area, and a second driving means. A high-speed driving means for driving the pallet at a second speed higher than the first speed in the area, wherein the first speed is the second speed between the first and second areas. A plurality of acceleration driving means for accelerating to a speed of, a means for accelerating a first pallet by a first acceleration driving means of the plurality of acceleration driving means, and a means for accelerating a second pallet to the plurality of acceleration driving means Means for accelerating with the second acceleration driving means. Each of the plurality of acceleration driving units and the plurality of deceleration driving units includes a plurality of motors, and each is independently driven by one motor.

Furthermore, the acceleration drive chain means and / or the deceleration drive chain means may be independent of speed and / or speed.
Or with multiple drive chains that can operate with acceleration,
Each drives only one set of pallets at the same time.

The acceleration driving means and the deceleration driving means have two chain engaging members at diagonal positions, and drive the pallet only at the chain engaging position.

The acceleration motor and / or the deceleration motor changes the speed of the acceleration drive unit and / or the deceleration drive unit from a low speed to a high speed and / or a high speed to a low speed according to a constant speed command and a speed curve.

With the above configuration, a link mechanism for connecting the front and rear pallets is unnecessary, and a variable-speed passenger conveyor with good riding comfort can be realized.

[0015]

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

FIG. 1 is a diagram illustrating a schematic configuration according to an embodiment of the present invention. FIG. 1A is a plan view of a variable-speed passenger conveyor as viewed from above, and the lower half thereof is a perspective view showing an arrangement of a drive chain. FIG. 1 (b)
1 is a side view of a variable-speed passenger conveyor as viewed from the side.

In a linear variable-speed passenger conveyor using pallets 1 for transporting passengers, a landing plate 2
The pallet 1 appears continuously (with no gap) from below and becomes a passenger's boarding area, accelerates by expanding the interval in the acceleration section, moves on the high speed section that occupies most of the passenger conveyor, and decelerate section at the descending end Again to reduce the distance between the front and rear pallets,
The pallet is brought into contact with the pallet to eliminate the gap, and is sucked under the landing plate 11. By changing the pallet interval, the speed at the intermediate portion can be made higher than the speed at the end of entry and exit.

The realization of this variable speed is the subject of the present invention, so that the pallet 1 initially engages with a low-speed drive chain 4 which is hung on a low-speed sprocket 3 and at a constant low speed the lower part of the landing plate 2 And engages with one of a plurality of acceleration drive chains 6 attached to the acceleration sprocket 5 and is accelerated, and engages with a high-speed drive chain 8 that moves at a constant high speed by the high-speed sprocket 7. Then, the vehicle travels in the middle high-speed section, and engages with one of a plurality of deceleration drive chains 10 attached to the deceleration sprocket 9 to reduce the speed of the preceding pallet 1 to reduce the clearance. And engages with the low-speed drive chain 4 which is again hung on the low-speed sprocket 3 to reach the exit plate 11 at a constant low speed to complete the transportation of passengers, Performing a return operation to the landing side by reversing the direction over preparative 11 lower. All the pallets 1 on the passenger conveyor sequentially repeat the above-described operation, thereby realizing a passenger conveyor having a variable speed as a whole.

On the side of the passenger conveyor, there are provided a handrail 12 on which passengers can be grasped, and a side cover 13 for covering the side and lower devices.

Here, as an example of the speed at this time, the initial speed (appearance speed) at the end of the entry / exit end is 30 to 50 m / min, the intermediate portion is about 2 to 4 times that speed, and the return side is equal to or equal to the initial speed. If an acceleration / deceleration mechanism is also installed, the initial speed is 2 to 10
It is twice. The length of each section is about 5 to 10 m for the acceleration section and the deceleration section depending on the ratio of the shift and the magnitude of the acceleration / deceleration, and 100 to 2000 m for the high-speed section. Therefore, in the variable-speed passenger conveyor, the length of the middle high-speed section is overwhelmingly longer than the other sections, so the drawings of the present application show the components necessary for carrying out the present invention, and The ratios and the like are shown by enlarging or reducing the necessary parts without particular notice. Also, illustration of elements not directly related to the present invention, such as a technique generally used in a passenger conveyor, is omitted.

The drive chains 4, 6, 8, and 10 for driving the pallet 1 by engaging with the pallet 1 are installed at lower portions on both sides of the passenger conveyor as shown in FIG. In the low-speed section and the high-speed section, since the pallet 1 moves at a constant speed, it is sufficient that the low-speed drive chain 4 and the high-speed drive chain 8 are a pair of left and right pairs.

On the other hand, in the acceleration section and the deceleration section, the pallet 1 moves at different speeds depending on its position. Therefore, in order for the pallet 1 to be engaged with the acceleration drive chain 6 / deceleration drive chain 10 and driven at a predetermined speed / acceleration, the drive at a predetermined speed / acceleration for each pallet in the acceleration section / deceleration section. You need a chain.
For this reason, in the present invention, a plurality of sets of the acceleration drive chain 6 and the deceleration drive chain 10 each of which can be set to a predetermined speed / acceleration are prepared, and the acceleration drive chain 6 and the deceleration drive chain 10 are provided side by side, and the pallet 1 is placed therein. A traveling at a predetermined speed / acceleration is realized by engaging with one set of.

In order to improve the running stability of the pallet 1 in the fastest section of the variable-speed passenger conveyor, the high-speed drive chain 8 is wider than the acceleration drive chain 6 and / or the deceleration drive chain 10. It is effective to arrange it outside the direction.

A method of realizing the engagement between the pallet 1 and the drive chain will be described with reference to FIGS.

FIG. 2 is a view for explaining the arrangement of the chain and the engaging element in the acceleration section.

FIG. 2A is a plan view showing the movement from the low-speed drive chain 4 to the acceleration drive chain 6, and a pallet carried from the low-speed drive chain 4 is shown in FIG.
At the position where the vehicle moves to the acceleration section, it sequentially engages with the acceleration drive chain 6 having the same speed as that of the low-speed section.

FIG. 2B is a side view of the acceleration drive chain 6, wherein the chain engaging members 16 of the acceleration drive chain 6 are arranged facing each other, and the respective acceleration drive chains 6 are located at different positions. At different speeds.

Another example of the arrangement of the acceleration drive chain 6 is shown in FIG.

FIG. 3 is a side view showing an example of the positional relationship between the acceleration drive chain 6, the acceleration sprocket 5 for running the acceleration drive chain 6, and the shaft for driving the acceleration sprocket 5. FIG. 3 illustrates an example in which the number of acceleration drive chains 6 is four.

The acceleration sprockets 5 of each acceleration drive chain 6 are mounted on a common shaft. The acceleration sprocket 5 is mounted so that at least one of the mounted shafts is used as a drive shaft and rotates with the drive shaft in conjunction with rotation of the shaft. Acceleration sprocket 5
Is mounted via a bearing, a bush rubber or the like so that at least one of the mounted shafts can be a free shaft and can freely move with respect to the free shaft regardless of the rotational movement of the shaft. The drive shafts are provided at least as many as the number of acceleration drive chains that move independently, and the driving force of the acceleration motor 21 is transmitted to each drive shaft independently.

In FIG. 3, the acceleration drive chain 6A is mounted with one black shaft as a drive shaft and two white shafts as free shafts. The acceleration drive chain 6B is attached to the same three shafts as the acceleration drive chain 6A, but the positions of the drive shafts are different. Therefore, the acceleration drive chain 6A is driven by the rotation of the upper left drive shaft. However, since the acceleration drive chain 6B is attached as a free axis to the corresponding upper left shaft, the movement of the acceleration drive chain 6A is Independent, unaffected. The same applies to the acceleration drive chains 6C and 6D.

The above can be realized by providing independent drive shafts in accordance with the number of acceleration drive chains, and each acceleration drive chain 6 being selectively attached to an independently moving drive shaft. is there.

The above description is based on the deceleration drive chain 10
The same applies to.

FIG. 4 is an explanatory view of the chain engaging portion.

A high-low speed chain engaging portion 14 is mounted on the pallet 1 at a position corresponding to the lower high-speed drive chain 8 (and the low-speed drive chain 4). , The high-speed drive chain 8 and the high-low speed chain engaging portion 14 are engaged using the curvature of the high-speed sprocket 7. Thus, the pallet 1 is driven by the high-speed drive chain 8 in the high-speed section. At the end of the high-speed section, the engagement between the high-speed drive chain 8 and the high-low speed chain engaging portion 14 is released due to the curvature of the high-speed sprocket 7 in the reverse operation.

As shown in FIG. 4 and FIG. 5 which is an explanatory view of the arrangement of the chain engaging portions at the lower portion of the pallet, the pallet 1 has a plurality of lower driving chains 6 (and a lowering driving chain 10). The plurality of acceleration / deceleration chain engaging portions 15 are attached at the positions where they are to be performed. In the acceleration section, the chain engagement element 16 provided on the acceleration drive chain 6 engages with the acceleration / deceleration chain engagement portion 15, and the acceleration drive chain 6 itself does not directly engage with the acceleration / deceleration chain engagement portion 15. Therefore, the pallet 1 moves in accordance with the speed of the acceleration drive chain 6 engaged by the chain engaging element 16, and the speed of the other acceleration drive chain 6 not engaged does not interfere with the pallet 1. Thereby, in the acceleration section, a plurality of pallets 1 on the acceleration section
The speed of the specific pallet 1 engaged with the chain engaging element 16 can be set freely by controlling the speed of the acceleration drive chain 6, and the speed can be set independently of other pallets on the acceleration section. it can.

As described above, the pallet 1 is engaged with the low-speed drive chain 4, the acceleration drive chain 6, the high-speed drive chain 8, the deceleration drive chain 10, and the low-speed drive chain 4 in that order, and is driven as a whole. A variable speed passenger conveyor can be constructed.

At this time, the acceleration drive chain 6 /
The number of sets of the reduction drive chain 10 varies depending on the initial speed / maximum speed / acceleration / pallet length of the variable-speed passenger conveyor.

Here, assuming that the initial speed of the variable-speed passenger conveyor (the speed at which the pallets appear at the end of the boarding and exiting the pallet) is VL, the maximum speed (the speed in the middle high-speed section) is VH, and the acceleration is AC, The time TA required for (and deceleration) is:
It is represented by

[0040]

(Equation 1)

The pallet moving integrally in the middle part
Assuming that the length in the traveling direction is L, the interval TS at which the pallets are sent out from the lower part of the landing plate is:

[0042]

(Equation 2)

Is as follows. The pallet sending interval TS is the same as the pallet intrusion interval into the acceleration section.
The number of sets of pallets simultaneously existing on the acceleration section (and deceleration section) is

[0044]

(Equation 3)

Is as follows. Where the function roundup (x, 0) is
An integer value obtained by rounding up the decimal portion of the numerical value X is given.

The required number of sets NC of the acceleration drive chain 6 (and the deceleration drive chain 10) provided in parallel is such that the acceleration drive chain, which has completed the acceleration operation by engaging with a certain pallet, engages with the next pallet after the completion of acceleration. Let TC be the waste time until you can do it

[0047]

(Equation 4)

Is as follows.

From the equations (1) to (4), the acceleration drive chain 6
In order to reduce the required number of sets NC (and the deceleration drive chain 10), the shorter the acceleration time TA, the better. This is because when the difference between the initial speed VL and the maximum speed VH is small, the acceleration A
This corresponds to the case where C is large. Also, in order to reduce the NC, the larger the pallet transmission interval TS, the better.
This is when the pallet length L is long or the initial speed VL is small. Furthermore, the NC decreases as the waste time TC decreases.

Reducing the required number of sets NC of the acceleration drive chain 6 (and the deceleration drive chain 10) simplifies the mechanism and reduces the number of parts, so that the variable speed is excellent in various points such as cost and volume. It becomes a passenger conveyor. However, when designing a variable speed passenger conveyor, the initial speed V
Reducing the difference between L and the maximum speed VH reduces the advantage of the variable speed, and reducing the initial speed VL reduces the transport capacity of the passenger conveyor, and is generally not desirable. Therefore, it is a good design idea to firstly shorten the waste time TC, secondly increase the pallet length L, and thirdly increase the acceleration within a range where the passenger is not uncomfortable.

Here, as an example of numerical values, a quadruple-speed variable-speed passenger conveyor having an initial speed VL = 40 m / min (= 0.67 m / s) and a maximum speed VH = 160 m / min (= 2.67 m / s) Is assumed. Assuming that three pallets move integrally in the middle part as shown in FIG. 3 and the pallet length L in the traveling direction is L = 1.2 m, the pallet sending interval TS = 1.8 s from Equation 2. Therefore, if the number of sets of pallets simultaneously existing on the acceleration section is designed to be two sets, the condition within the acceleration time TA = 3.6 s is obtained from the formula 3, and the acceleration AC = 0.56 m / s / s is the minimum acceleration in which the number of sets of pallets simultaneously existing on the acceleration section is two. The waste time TC until the acceleration drive chain 6 engaged with the pallet which is the basis of this design and completed the acceleration operation until it can engage with the next pallet after the completion of acceleration is equal to the pallet sending interval TS. If it is within 1.8 s, the required number of sets NC of the acceleration drive chain 6 to be installed can be set to 3 from Equation 4.

FIG. 6 is an explanatory diagram of the acceleration drive chain 6.

The chain engaging element 16 provided on the acceleration drive chain 6 engages with the pallet 1 in the illustrated “section in which the pallet engages with the pallet for acceleration traveling” on the upper portion of the acceleration sprocket 5. Drive. In order to prevent interference with other pallets, there is at most one chain engaging element 16 in this section.

However, if the acceleration drive chain 6 has only one chain engaging element 16, it takes much time for the chain engaging element 16 to return from the end point of the acceleration section to the start point of the acceleration section. The time TC becomes longer. Therefore, by adding another chain engaging member 16 at the diagonal position of the acceleration drive chain 6, the chain engaging member in the acceleration section can satisfy one condition, from the end of the engagement to the next engagement. Can be reduced to the range shown in the figure.

FIG. 7 is a diagram showing a change in the speed of the acceleration drive chain.

The pallet 1 engaged by the acceleration drive chain 6A has an initial speed (speed in a low speed section) V of the acceleration drive chain.
The speed is accelerated by one accelerating drive chain from L to the speed VH from the high-speed section, and the operation shifts to the high-speed section. After that, to drive the next pallet, the acceleration drive chain 6A
At this time, the deceleration time may be half of the acceleration time because the chain engaging element is arranged face-to-face.

FIG. 8 is a diagram showing a configuration of a control system according to one embodiment of the present invention. The control device 18 of the variable-speed passenger conveyor includes a constant-speed traveling control unit 18-1, an acceleration traveling control unit 18-2, and a deceleration traveling control unit 18-3.
The position of the pallet 1 is detected by a position detector 19 directly by contact or light detection, or by a rotary encoder or the like installed on a sprocket, and sent to the control device 18.

The cruise control section 18-1 is provided with a main motor 20.
By rotating the low-speed sprocket 3, the low-speed drive chain 4, and the high-speed sprocket 7 via gears and transmission chains.
Drives the high-speed drive chain 8. As described above, the low-speed drive chain 4 and the high-speed drive chain 8 transport the pallet 1 engaged with the chain at a predetermined speed.

The acceleration traveling control unit 18-2 includes the position detector 1
9, the speed / speed corresponding to the pallet to be subjected to the acceleration drive is supplied to each of the number of the acceleration motors 21 corresponding to the required number NC of the acceleration drive chains 6 described above.
The acceleration is calculated and the acceleration motor 21 is driven. The acceleration motor 21 is provided with a corresponding acceleration sprocket 5,
The pallet 1 engaged with the acceleration drive chain 6 is driven independently by driving the acceleration drive chain 6. Similarly, the deceleration traveling control unit 18-3 drives the pallet to be decelerated via the deceleration motor 22, the deceleration sprocket 9, and the deceleration drive chain 10.

Here, the acceleration motor 21 and the deceleration motor 22 are moved at the same time as a set of pallets and the pallets, while the main motor 20 needs to transport many pallets and passengers on the pallets at the same time. Only the passengers above need be transported. Therefore, the acceleration motor 2
1. The capacity of the deceleration motor 22 can be very small compared to the main motor 20.

According to the present embodiment, by moving a plurality of pallets integrally at the intermediate portion, the number of acceleration drive chains / deceleration drive chains and their associated motors can be reduced.

Further, by providing the chain engagement elements of the acceleration drive chain / deceleration drive chain at two diagonal positions, waste time can be reduced, and deceleration / acceleration time until the next engagement can be shortened. Thus, the number of acceleration / deceleration drive chains and their associated motors can be reduced.

Furthermore, it is possible to use a small-capacity motor for acceleration / deceleration, thereby reducing the manufacturing cost.

According to the present embodiment, the common size of the low-speed drive chain / high-speed drive chain and the pallet engaging portion allows the passenger conveyor to be reduced in lateral size.

[0065]

As described above, according to the present invention, there is no need to provide a link mechanism for connecting the front and rear pallets, and it is possible to provide a variable-speed passenger conveyor with good ride comfort. .

Further, according to the present invention, there is an effect that the acceleration / deceleration portion of the variable-speed passenger conveyor can be easily configured.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a schematic configuration according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a chain arrangement.

FIG. 3 is an explanatory diagram showing another example of a chain arrangement.

FIG. 4 is an explanatory view of a chain engaging portion.

FIG. 5 is an explanatory diagram of an arrangement of a chain engaging portion below a pallet.

FIG. 6 is an explanatory diagram of an acceleration drive chain.

FIG. 7 is a diagram showing a change in speed of an acceleration drive chain.

FIG. 8 is a diagram illustrating a configuration of a control system according to an embodiment of the present invention.

[Explanation of symbols]

1: Pallet, 2: Landing plate, 3: Low speed sprocket, 4: Low speed drive chain, 5: Acceleration sprocket,
6 ... acceleration drive chain, 7 ... high speed sprocket, 8 ... high speed drive chain, 9 ... deceleration sprocket, 10 ... deceleration drive chain, 11 ... landing plate, 12 ... handrail, 13 ... side cover, 14 ... high / low speed chain Engaging part,
15 ... Acceleration / deceleration chain engagement part, 16 ... Chain engagement element,
17: floor surface, 18: control device, 18-1: constant speed traveling control unit, 18-2: acceleration traveling control unit, 18-3: deceleration traveling control unit, 19: position detector, 20: main motor, 21 ... Acceleration motor, 22 ... Deceleration motor.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ritsu Teramoto 502 Kandachi-cho, Tsuchiura-shi, Ibaraki F-term, Machinery Research Laboratory, Hitachi, Ltd. 3F321 BA01 CA24 CA31 CB02

Claims (6)

[Claims] A plurality of pallets for carrying passengers thereon;
A low-speed driving means for driving the pallet at a first speed in a first area; and a high-speed driving means for driving the pallet at a second speed higher than the first speed in a second area. In the variable-speed passenger conveyor, a plurality of acceleration driving means for accelerating from the first speed to the second speed between the first and second regions, and a first pallet for moving the first pallet out of the plurality of acceleration driving means. Means for accelerating by the acceleration driving means,
Means for accelerating the second pallet by the second acceleration driving means of the plurality of acceleration driving means. 2. A large number of pallets for carrying passengers thereon,
A low-speed driving means for driving the pallet at a first speed in a first area; and a high-speed driving means for driving the pallet at a second speed higher than the first speed in a second area. In the variable-speed passenger conveyor, a plurality of deceleration driving means for decelerating from the second speed to the first speed between the first and second regions, and a first pallet for moving the first pallet out of the plurality of deceleration driving means. Means for decelerating by the deceleration drive means of (1);
Means for decelerating the second pallet by a second deceleration driving means of the plurality of deceleration driving means, wherein a variable speed passenger conveyor is provided. 3. The variable-speed passenger conveyor according to claim 1, wherein said driving means is constituted by a chain. 4. The variable speed type according to claim 1, wherein each of said plurality of acceleration driving means and said plurality of deceleration driving means comprises a plurality of motors, each of which is independently driven by one motor. Passenger conveyor. 5. The apparatus according to claim 1, wherein said acceleration driving means and said deceleration driving means have two chain engaging members at diagonal positions and drive said pallet only at said chain engaging position. 2. The variable-speed passenger conveyor according to claim 2. 6. The variable-speed passenger conveyor according to claim 1, wherein said high-speed driving means is disposed outside of said variable-speed passenger conveyor with respect to said acceleration driving means and / or said deceleration driving means. Item 3. The variable speed passenger conveyor according to item 2 or 3.