WO2002000542A1

WO2002000542A1 - Passenger conveyor

Info

Publication number: WO2002000542A1
Application number: PCT/JP2000/004243
Authority: WO
Inventors: Tatsuya Matsumoto; Yukihiro Yamaguchi; Chuichi Saitoh; Kazuhira Ojima; Takashi Teramoto; Masamitsu Yamaki; Yoshio Abe
Original assignee: Hitachi, Ltd.; Hitachi Building Systems Co., Ltd.
Priority date: 2000-06-28
Filing date: 2000-06-28
Publication date: 2002-01-03
Also published as: EP1306342A1; DE60045563D1; MY128204A; EP1306342B1; CN1248954C; JP3699957B2; CN1454179A; EP1306342A4

Abstract

A passenger conveyor capable of reducing a step direction converting space to reduce an installation space and also smoothly performing a step direction converting operation between forward and backward movements of the steps, comprising a plurality of steps (5) circulatingly moving with the tread thereof facing upward in forward movement and facing downward in backward movement, a step chain (12) endlessly connecting these plurality of steps (5) to each other, and a drive sprocket (13) and a driven sprocket (14) circulatingly moving the step chain (12) passed around the forward and backward movement direction converting parts thereof, wherein the steps (5) are connected to the step chain (12) through crank mechanisms (8, 24, 25).

Description

Specification

Passenger conveyor technology

The present invention relates to a passenger conveyor such as an escalator or an electric road, in particular, a step or a tread plate is turned 180 degrees at a turning portion between an outbound path and a return path, and the tread surface is directed upward on the outward path and downward on the return path. It is related to a passenger conveyor that is circulated and moved. Background art

Escalators, which are a type of conventional passenger conveyor, usually use a step that moves with the tread facing upward on the outbound side, as described in Japanese Patent Publication No. It is configured to rotate and rotate the tread surface downward on the return path side.

The escalator with the above configuration does not consider the direction change space of the steps and has more than necessary direction change space, so the impact on the area around the installation location was increased. Disclosure of the invention

An object of the present invention is to provide a new passenger conveyor with a small installation space.

Another object of the present invention is to provide a new passenger conveyor capable of reducing the space required to change the direction between the forward and backward steps of the steps.

One of the other objects of the present invention is that when the direction change space between the forward and backward steps of the step is reduced, the direction change operation between the forward and backward steps of the step can be performed smoothly. It is to provide a new passenger conveyor.

In order to achieve the above object, the present invention provides a crank mechanism that swings a plurality of steps that circulate with a tread surface facing upward on a forward path side and a tread surface downward on a return path side, at a direction changing portion between the forward path and the backward path. It was connected to the step chain via.

With the above configuration, the step changing direction at the turning section between the forward path and the return path can be displaced outward in the moving direction from the rotation locus of the step chain and turned 180 degrees. Even if the diameters of the drive sheave and the driven sheave on which the one wheel is wound are reduced, the gap between the adjacent steps when the direction is changed can be secured. As a result, interference between adjacent steps at the time of turning can be avoided, so that the smoothness of the turning operation of the steps is not impaired, the turning radius of the steps can be minimized, and the turning step can be performed. -The size of the installation space can be reduced. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view of an essential part of an Escalé step, showing an embodiment of a passenger conveyor according to the present invention.

FIG. 2 is a schematic side view showing a direction changing portion of a step of the escalator in FIG.

FIG. 3 is an enlarged cross-sectional view of the periphery taken along the line II-II of FIG.

FIG. 4 is a schematic side view showing the entire escalator using the step direction changing mechanism ′ of FIG.

FIG. 5 is an enlarged side view taken along the line V_V in FIG.

FIG. 6 is a plan view showing another embodiment of the connecting portion of the connecting link in FIG. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of a passenger conveyor according to the present invention will be described based on an escalator shown in FIG. 1 to FIG.

The escalator 1 according to the present invention is configured as follows. That is, as shown in FIG. 4, the main frame 4 is suspended between the upper floor 2 and the lower floor 3 which are vertically separated from each other, and the main frame 4 is suspended in the main frame 4 along the longitudinal direction of the main frame. A number of moving steps 5 are guided. A front wheel 6 is pivotally supported on both widthwise sides of the step 5 on the upper side, and a rear wheel 7 is supported on both widthwise sides of the lower side at an interval smaller than the interval between the front wheels 6. As shown in FIG. 1, the front wheel 6 and the rear wheel 7 are rotatably supported by the step 5 via wheel shafts 8 and 9 protruding in the step width direction, respectively.

The front wheel 6 and the rear wheel 7 supported in this way are respectively composed of a pair of left and right front wheel guide rails 10, 10 ′ and rear wheel guide rails 11, 11 ′ (5th (Fig.) The rolling of the front wheel 6 and the rear wheel 7 causes the step 5 to circulate in the outward path and the return path between the upper machine room UM and the lower machine room LM provided at both longitudinal ends of the main frame 4.

By the way, in order to circulate the plurality of steps 5, each step 5 is connected by an endless step chain 12. The step chain 12 is disposed in a pair on each side of the step 5 in the width direction. The drive chain 13 supported on the upper machine room UM, and the driven wheel 13 supported on the lower machine room LM. It is wound around.

As shown in FIG. 3, the drive chain 13 is provided as a pair on a rotating shaft 13 S. The rotating shafts 13 S are provided on the left and right side frames 4 A, 4 A constituting the main frame 4. It is supported by B. Coaxial with these pair of drive sheaves 13 The power transmission chain 26 is provided, and the power of the motor 17 is transmitted to the power transmission chain 26 via the power chain 15 and the speed reducer 16. On the other hand, on both sides of the step 5 connected endlessly by the step chain 12, a pair of balustrade panels 18 constituting a balustrade are supported by left and right side frame bodies 4 A, 4 B of the main frame 4. A handrail 19 is guided along the periphery of the balustrade panel 18. Although not shown, the moving handrail 19 is driven synchronously with the step 5 by obtaining power from the power transmission sheave 26.

The base of the balustrade panel 18 is covered by an inner deck 20 and an outer deck 21. Furthermore, both sides in the width direction of the step 5 and the balustrade are separated by a vertical skag 22. . The outside of the main frame 4 is covered with a decorative panel 23.

In the above configuration, the most important configuration is a coupling mechanism between the front wheel 6 and the step chain 12. In the present embodiment, as shown in FIGS. 1 to 3, the front wheel 6 is pivotally supported on a wheel shaft 8 which is a step shaft protruding in the width direction of the step 5, and is located outside the front wheel 6 of the wheel shaft 8. Step chains 1 and 2 are connected at the position.

The connection configuration between the wheel axle 8 and the step chain 12 will be described in detail. One end of the connection link 24 is connected to the shaft end of the wheel axle 8 that supports the front wheel 6 so as to be rotatable around the axis. The other end of the connecting link 24 is extended toward the rear wheel 7, and the other end of the connecting link 24 can be rotated via the link shaft 25 to the step chain 12 corresponding to the extending end. It is connected like this. The link shaft 25 is provided in parallel with the wheel shaft 8, and the shafts 8, 25 connecting the connecting link 24 are arranged orthogonally to the step chain 12. Become. With such a configuration, the step 5 and the step chain 12 Is a crank mechanism having a wheel shaft 8, a connecting link 24, and a link shaft 25, that is, a crank mechanism having a shaft orthogonal to the step chain 12 and a connecting link 24 connected to the shaft. Will be connected. Note that, instead of the wheel shaft 8, a shaft dedicated to connection may be provided on the step 5 as the step shaft. The step chain 12 is connected to a normal chain link 12 A and a specific chain link 12 B having the same shape as the chain link 12 A. The link shaft 25 is attached, and the other end of the connection link 24 is connected to the link shaft 25. Note that the chain link 12A and the specific chain link 12B have the same shape, but this is to make the chain pitch the same. Therefore, if the chain pitch is the same, the shape is not necessarily the same shape. You don't have to. Further, the other end of the connection link 24 may be connected to a link pin 12P connecting between adjacent normal chain links 12A without using the specific chain link 12B.

In the above configuration, when the step 5 approaches the drive sheave 13 (FIG. 2), the front wheel 6 moves to the double rail portion (opening) of the semicircular guide rail 10 installed at the turning portion. It is guided in the width m and the width slightly larger than the diameter of the front wheel 6). At this time, the wheel shaft 8 side of the connecting link 24 swings with respect to the step chain 12 so that it moves so as to bulge outward in the moving direction from the rotation locus of the step chain 12 along the outer periphery of the drive chain 13. In addition, a semi-circular guide rail 10 for guiding the front wheel 6 is installed, and the center of the front wheel 6 is at the extreme end of the direction changing portion and the maximum misalignment dimension W from the rotation locus of the step chain 12 is set. The semi-circular guide rail 10 is formed so as to be as follows. Due to the eccentricity of the guide rail 10 reaching the swelled maximum misalignment dimension W, the interval between the adjacent steps 5 is increased, and as a result, interference between adjacent steps when changing directions (collision). Is avoided.

Here, if the length of the pivot pitch P of the connection link 24 is shorter than the maximum misalignment dimension W, the front wheel 6 can be moved by expanding in the movement direction outside the rotation locus of the step chain 12. If the length of the pivot pitch P is the same as the maximum misalignment dimension W, the connecting link 24 becomes horizontal at the maximum misalignment dimension W. In the vicinity, the moving force of the step chain 12 cannot be transmitted to the step 5, so that the front wheel 6 falls on the semi-circular guide rail 10 due to its own weight and the distance from the preceding step In other words, the distance between the step 5 and the subsequent step 5 is reduced by narrowing the distance, or the distance between the step 5 and the subsequent step 5 is reduced, thereby hindering the smooth turning operation of the step 5. Therefore, the length of the pivot pitch P of the connecting link 24 needs to be longer than the maximum misalignment dimension W.

In this way, by increasing the length of the pivot pitch P of the connecting link 24 with respect to the maximum misalignment dimension W, the locus bulging outward from the rotational locus of the step chain is moved. The front wheel 6 can smoothly move in the direction changing portion, and the above-described disadvantage is avoided. Then, at the point where the front wheel 6 reaches the horizontal portion of the inland rail 10 ′ on the return path, the connecting link 24 returns to the original position parallel to the step chain 12.

At this time, the rear wheel 7 is guided by a guide rail 1 1 ′ having a different locus from the guide rail 10 ′ for the front wheel 6.

Next, the state of movement of the step 5 from the outward route to the return route in the upper machine room UM will be described in detail with reference to FIG. As shown in FIG. 2, the step 5 (a), which has moved the guide rails 10 and 11 from the left to the right with the tread surface 5 F facing upward, has a connecting link connected to the wheel shaft 8 of the front wheel 6. 2 4 is parallel to step chain 1 2, connecting link 2 4 to step chain 1 2 The link shaft 25 at the connecting portion of the step 5 is located closer to the rear side in the traveling direction of the step 5. ,

In this state, when the step 5 (a) reaches the outer periphery of the drive chain 13 with the movement of the step chain 12, the front wheels 6 and the rear wheels 7. The rear wheel 7 is guided along the semicircular portion of the guide rail 11. The step 5 (b) thus guided starts to incline on the outer periphery of the drive wheel 13 with the front end in the traveling direction of the tread being downward.

At this time, the step 5 (b) is configured such that the turning radius and the center of rotation of the guide rails 10 and 11 are different from the turning radius and the center of rotation of the drive chain 13 because of the depth dimension. For example, since the movement trajectory of the front wheel 6 is positioned outside the movement trajectory of the rotation trajectory of the step chain 12, the connection link 24 swings and displaces due to the difference in the different dimensions (center misalignment dimension). This displacement secures the space between adjacent steps 5 (b) and 5 (a) and between 5 (b) and 5 (c) when turning, so that interference between adjacent steps is eliminated and the steps are smooth. A change of direction has been achieved.

As the step moves from step 5 (b) to step 5 (c), the slope of the tread becomes even greater, and the tread becomes downward when it passes the middle of the turning point. With such a change in the inclination of the steps, the front wheel 6 moves along the outer periphery of the drive wheel 13 as shown by 6 (1) and 6 (2), and gradually moves away. After moving along the outer circumference of 3 as shown by 6 (3) and 6 (4) and gradually approaching, step 5 (d) is guided by the return-side guide rails 10 'and 1 1'. The tread is completely downward and the connecting link 24 is horizontal and parallel to the step chain 12.

As described above, even if the diameter of the drive chain 13 is reduced, the direction of the front wheel 6 changes. By setting the movement trajectory of the step outside the movement trajectory of the step chain 12, there is no interference between adjacent steps at the direction change section, and the step can be turned smoothly. Can be minimized, and the height H of the upper machine room UM can be reduced.

The above description is about the direction change operation of the steps in the upper machine room UM. However, in the lower machine room LM, the downward tread surface 5F is turned upward on the return route as it reaches the outward route. The direction change operation is performed using the driven chain wheel 14. The mechanism and operation are the same as those in the upper machine room UM. That is, the step change operation of the step in the lower machine room LM of the step 5 from the return path to the forward path is performed by a configuration similar to the configuration in which the configuration in FIG. 2 is turned 180 degrees and turned upside down. Therefore, the description is omitted. By the way, although not shown, a dedicated guide rail is provided on the step chain 12 in order to realize a further stable movement of the step drive system. The adoption or non-provision of a dedicated rail that allows the link 24 to correctly follow and move can be determined as necessary.

Although the above-described embodiment has been described with reference to the example of Escalée 1-11, the present invention can be applied without limitation to an electric road that performs horizontal movement or gentle inclination movement. The step chain can be read as a step chain. ,

On the other hand, in the escalator of the above configuration, the front wheels 6 are guided by the front wheel guide rails 10 and 10 ′, and are restricted from moving (meandering) in the left-right direction while the steps 5 are moving. The steps 5 are designed to minimize contact with the skirt guards 22 etc. (Fig. 3).

However, if the installation accuracy of the front wheel guide rails 10 and 10 'is poor, Since it meanders to the left and right while moving, a force is generated in the direction in which the distance between the step chain 12 and the step 5 changes, and at both ends of the connection link 24 which is a connection part between the step chain 5 and the step chain 12. Momentary load occurs. If this moment load is repeatedly generated at both ends of the connecting link 24, both ends may be damaged.

Therefore, in another embodiment of the present invention, as shown in FIG. 6, bearings 30 A, 30 A are provided between the connecting link 24 and the wheel shaft 8 and between the connecting link 24 and the link shaft 25. With B interposed, both bearings 30A and 30B are configured to be movable in the axial direction. That is, the connection between the step chain 12 and the link shaft 25 is performed by connecting the link shaft 25 installed on the specific link 12 B of the step chain 12 to the inner ring 3 2 of the bearing 30 B via the collar 31. The outer ring 3 is inserted into the outer periphery of the inner ring 32 via a plurality of rollers 33, and the housing 35 of the connecting link 24 is provided on the outer periphery of the outer ring 34. 6 and the link nut 25 is provided with a bearing nut 37.

Similarly, the connection between the wheel shaft 8 of the front wheel 6 and the connection link 24 is performed by fitting the inner ring 42 of the bearing 30 A into the wheel shaft 8 via the collar 41 and a plurality of rollers 43 around the outer periphery of the inner ring 42. An outer ring 44 is fitted, a housing 45 of the connecting link 24 is provided on the outer periphery of the outer ring 44, the outer ring 44 is fixed to the housing 45 with a ring 46, and a bearing nut 47 is provided at the tip of the wheel shaft 8. By connecting the connecting link 24 to the wheel axle 8 and the step chain 12 with the roller bearings interposed therebetween, the outer rings 34 and 44 can move the inner rings 32 and 42 in the axial direction through the rollers 33 and 43. It can slide and move until it comes into contact with the collar 31, 41 or the bearing nut 36, 46.

Therefore, due to the poor installation accuracy of the front wheel guide rails 10 and 10 ′, Even if the front wheel 6 meanders left and right during the step movement and a force is generated in the direction in which the distance between the step chain 12 and the step 5 changes, the connection link 24 moves in the axial direction, so the connection link 2 4 The moment load generated at the bearings 30 A and 3 OB, which are the connecting parts of the bearings, can be kept low, and the life of the connecting parts can be prevented from being shortened.

In the above embodiment, the two bearings provided at both ends of the connecting link 24 are both roller bearings, but one of the two bearings is a roller bearing and the other is a roller bearing. However, even if only one side can be displaced in the axial direction, the generated moment load can be kept low.

Claims

The scope of the claims

1. A plurality of steps that circulate with the treads facing up on the outbound path and the treads facing down on the return path, a step chain that connects these steps endlessly, and a direction change section between the outbound path and the return path A passenger conveyor having a drive chain wheel and a driven wheel chain that are wound and circulated in a passenger conveyor, wherein the step is connected to the step chain via a crank mechanism.

2. The crank mechanism includes: a step shaft that projects in the width direction from the step; a link shaft that projects from the step chain to the step side and is parallel to the step axis; and connects the link axis and the step axis. 2. The passenger conveyor according to claim 1, further comprising a connection link.

3. A plurality of steps that circulate with the treads facing up on the outbound path and the treads down on the return path, a step chain that connects these steps in an endless manner, and a turning section between the outbound path and the return path. A passenger conveyer having a drive chain and a driven wheel that are wrapped and circulated by the step chain, wherein the link is connected to an axis orthogonal to the step chain and swings at the direction changing portion. A passenger conveyor connected to the step chain via a step.

4. The step according to claim 3, wherein the step has a pair of front wheels and a pair of rear wheels, and one end of the connection link is connected to a wheel shaft supporting the front wheel. Passenger conveyor.

5. The step chain is a pair of step chains connecting both sides in the width direction of the step, and the pair of step chains are arranged on a side opposite to the front and rear wheels with respect to the step. The passenger core according to claim 4, wherein:

6. A main frame installed between floors that are vertically separated from each other, a plurality of steps that circulate with the tread surface facing upward on the outward path and the tread surface downward on the return path, and these plurality of steps A pair of step chains for connecting endlessly, a front wheel and a rear wheel that are pivotally supported by the plurality of steps and run on guide rails laid on the forward path and the return path, and the pair of step chains between the forward path and the return path. In a passenger conveyor having a drive chain and a driven wheel that are wrapped around and circulated by the direction change part, the movement locus of the front wheel of the step moving in the direction change part is smaller than the movement locus of the step chain. A passenger conveyor characterized in that a means for displacing outward in the moving direction is provided between the step chain and the step.

7. A main frame installed between floors that are vertically separated from each other, a plurality of steps circulating in the main frame with the tread surface facing upward on the outbound path and the tread surface facing downward on the return path. A pair of step chains that endlessly connect the front and rear wheels that are pivotally supported by the plurality of steps and run on guide rails laid on the forward path and the return path, and a pair of step chains for the forward path and the return path. A passenger conveyor having a drive chain wheel and a driven wheel chain that are wound around and circulated in a direction change portion, wherein a wheel shaft supporting the front wheels and the step chain are connected via a connection link; The passenger conveyor according to claim 1, wherein a guide rail for guiding the front wheels is laid at a position outside the movement locus of the step chain in the movement direction.

8. A plurality of steps that circulate with the treads facing up on the outbound path and the treads facing down on the return path, a step chain that connects these steps endlessly, and a direction change section between the outbound path and the return path In a passenger conveyor having a drive chain wheel and a driven wheel wheel that are wound around and circulated, a wheel shaft that supports the guide wheel of the step and the step chain are connected via a connection link. And a connecting portion of the connecting link is configured to be movable in an axial direction.

9. The escalator device according to claim 8, wherein the connecting portion of the connecting link includes a bearing that can be displaced in an axial direction.