CN1454179A - Passenger conveyor - Google Patents

Abstract

A passenger conveyor capable of reducing a step turnaround space to thereby reduce an installation space and also capable of smoothly performing a step turnaround operation between forward and backward movements of a step, comprising: a plurality of cyclically moving steps (5) in which the tread is facing upwards in the forward movement and downwards in the return movement; a step chain (12), the step chain (12) connecting the plurality of steps (5) to each other annularly; and a driving sprocket (13) and a driving sprocket (14) which circulate the step chain (12) around a turning portion between the forward path and the return path, wherein the steps (5) are connected to the step chain (12) by a crank mechanism (8, 24, 25).

Description

Passenger Conveyor

technical field

The present invention relates to passenger conveyances such as escalators, moving walkways, and more particularly to such passenger conveyances in which steps or treads pass through a diversion between a forward path and a return path Move and cycle through a 180-degree turn so that the treadplate goes up in the forward path and down in the return path.

Background technique

In a conventional passenger conveyance device such as an escalator, such as disclosed in Japanese Patent Application Laid-Open No. 1-55195, the step treads are movable and circulated, with the treads facing upwards at the forward path side, and the step treads at the return portion Turn 180 degrees so that the pedal faces down on the return path side.

In the escalator having the above structure, the turning space of the steps is not taken into consideration, and therefore, the turning space of the steps is unnecessarily large. Thus, the turning space of the steps affects the surrounding portion of the installation position of the escalator.

Contents of the invention

The object of the present invention is to provide a novel passenger transport device which requires less installation space.

Another object of the present invention is to provide such a novel passenger transport device which reduces the volume of the turning space between the forward path and the return path of the steps.

It is another object of the present invention to provide such a novel passenger conveyance which allows a smooth forward path and return when the volume of the turning space between the forward path and the return path of the steps is reduced Steering operation for steps between paths.

In order to achieve the above object, in the present invention, the movement and circulation of the plurality of steps makes the pedal face up in the forward path and face down in the return path, and the steps are connected to the steps by a crank mechanism that can be used in the forward path. swing at the turning portion between the and return paths.

With the above structure, the steps turned at the turning portion between the forward path and the return path can be turned by 180 degrees by being displaced toward the outside of the moving direction of the step chain with respect to the moving path of the step chain. Therefore, even if the diameters of the step chain driving sprocket and the step chain driven sprocket surrounded by the step chain are made smaller, the clearance between mutually adjacent steps during steering can be ensured. In this way, interference between mutually adjacent steps during turning can be prevented. Thereby, without impairing the smoothness of the turning operation of the steps, the turning radius of the steps can be minimized, thereby reducing the volume of the turning space, and the installation space of the passenger conveying device can be reduced.

Description of drawings

Fig. 1 is a plan view showing main parts of an escalator step according to an embodiment of an escalator of the present invention.

FIG. 2 is a side view showing a step turning portion of the escalator of FIG. 1 .

FIG. 3 is an enlarged cross-sectional view of a turning portion around a step, taken along a plane of line III-III of FIG. 2 .

FIG. 4 is a side view showing the entire escalator having the step turning mechanism of FIG. 2 .

FIG. 5 is an enlarged side view showing the escalator taken along the line V-V plane of FIG. 4 .

FIG. 6 is a plan view showing another embodiment of a connecting portion of the link of FIG. 1 .

Detailed ways

Hereinafter, an embodiment of the passenger conveying device of the present invention will be described with reference to the escalator shown in FIGS. 1 to 5 .

The escalator 1 of this invention is comprised as follows. That is, as shown in FIG. 4, a main frame 4 is installed between the upper floor 2 and the lower floor 3 which are vertically separated from each other, and in the main frame 4, a plurality of steps 5 moving in the longitudinal direction of the main frame are guided. The front wheels 6 are supported in both sides along the width direction of the upper step side of the step 5, and the rear wheels 7 are supported in both sides along the width direction of the lower step side, and the interval between the rear wheels is larger than the interval between the front wheels 6. Small. As shown in FIG. 1, the front wheel 6 and the rear wheel 7 are rotatably supported on the step 5 through wheel shafts 8 and 9 respectively, and the two wheel shafts 8 and 9 protrude in the width direction.

The front wheel 6 and the rear wheel 7 of support as mentioned above can be installed in the main frame 4 respectively on a pair of left and right front wheel guide rails 10,10' and a pair of left and right rear wheel guide rails 11,11' (Fig. 5) to rotate and move. Through the rotation and movement of the front wheels 6 and the rear wheels 7, the steps 5 can circulate along the forward path and the return path between an upper machine room UM and a lower machine room LM provided in both longitudinal ends of the main frame 4 and move.

In order to circulate and move the plurality of steps 5 , each step is connected to an endless step chain 12 . Pairs of step chains 12 are provided in both sides in the width direction of the steps 5, each step chain surrounding a step chain drive sprocket 13 supporting the upper machine room UM and a step chain driven sprocket 14 supporting the lower machine room LM. superior.

As shown in FIG. 3 , the step chain transmission sprocket pair 13 is connected to the rotating shaft 13S, and the rotating shaft 13S is supported by the left and right frame bodies 4A and 4B formed by the main frame 4 . A power transmission sprocket 26 is coaxial with the pair of step chain drive sprockets 13 and is disposed in the side opposite to the steps. The power of the motor 17 is transmitted to the power transmission sprocket 26 through a power chain 15 and a reduction gear 16 .

On the other hand, a pair of railing panels 18 constituted by railings are supported by the left and right side frame bodies 4A, 4B so as to stand in both sides of the steps circularly connected by the step chains 12, while a railing panel 18 can be guided along the periphery of the railing panels 18. armrest19. The handrail 19 is driven synchronously with the step 5 by the power obtained by the power transmission sprocket 26 .

The base of the railing panel 18 is covered by an inner cover 20 and an outer cover 21 . In addition, the two sides of the railing of the step 5 in the width direction are separated by a vertically arranged edge guard 22 . In addition, the outer side of the main frame 4 is covered with an outer panel 23 constituted by a decorative board.

The most important structure in the said structure is front-wheel 6, step chain 12 and connection mechanism. In this embodiment, as shown in FIGS. 1 to 3 , the front wheel 6 is supported by the wheel shaft 8 of the step shaft protruding along the width direction of the step 5, and is connected to the step at a position outside the front wheel 6 of the wheel shaft 8. Chain 12 on.

Hereinafter, the connection structure between the axle 8 and the step 12 will be described in detail. That is to say, one end of the link 24 is connected to the axle end portion of the wheel shaft 8 supporting the front wheel 6, so that the link can rotate around the shaft, and the other end of the link 24 extends towards the side of the rear wheel 7, and the link The other end of 24 is connected with the corresponding step chain 12 by the extended end of link shaft 25, thereby makes link rotatable. The link shaft 25 is arranged parallel to the wheel shaft 8 and each of the shafts 8 and 25 connected to the link 24 is arranged to intersect the step chain 12 at right angles. The steps 5 and the step chain 12 are connected to each other in this structure by a crank mechanism having a wheel shaft 8, a link 24 and a link shaft 25, that is to say, by a shaft which intersects the step chain 12 at right angles and is connected to the shaft. The connecting rods 24 are connected to each other. Wherein, a shaft dedicated to connection may be provided in the step 5 to replace the wheel shaft 8 as the step shaft.

A common link 12A and a special link 12B are connected to the step chain 12, and the link shaft 25 is connected to the special link 25B, and the other end of the link 24 is connected to the link shaft 25. Here, it is assumed that the shapes of the normal link 12A and the special link 12B are equal so that the link distances are equal to each other. Therefore, the normal link 12A and the special link 12B do not always have to have the same shape if the chain distances are equal to each other. In addition, the other end of the link 24 is connected to a link pin 12P connected between the common links 12A adjacent to each other instead of the special link 12B.

In the above structure, when the step 5 was close to the step chain driving sprocket 13 (Fig. 2), the front wheel 6 passed through the hemispherical double track part of the guide rail 10 arranged in the steering part (this part has a diameter slightly larger than the front wheel 6). Large opening width m) is guided to turn and move. Wherein, the hemispherical guide rail 10 that is used to guide the front wheel is provided with the purpose that the wheel shaft 8 on one side of the connecting rod 24 can swing relative to the step chain 12, so that the wheel shaft 8 moves toward the drive sprocket 13 along the step chain. The outside periphery of the moving path of the step chain 12 protrudes slightly outside the moving direction of the step chain 12 . In addition, the hemispherical guide rail 10 is formed at a center position W at which the displacement of the front wheel 6 with respect to the center of the moving path of the step chain 12 is the largest at the end position of the steering portion. The gap between the mutually adjacent steps increases due to the eccentricity of the guide rail 10 which increases to the maximum center displacement W, and thus interference (collision) between the mutually adjacent steps 5 can be prevented.

Wherein, when the length of the bearing pitch P of the supporting link 24 is shorter than the maximum center displacement W, the front wheel 6 can protrude and move toward the outside of the moving direction of the step chain 12 relative to the moving path of the step chain 12 . In addition, when the length of the bearing pitch P of the link 24 is equal to the maximum center displacement W, the link 24 is horizontal at the maximum center displacement W portion. Therefore, the moving force of the step chain 12 cannot be transmitted to the steps 5 at positions near the maximum central displacement W portion. Thus, because the front wheel 6 will fall to the inside of the hemispherical guide rail 10 under the dead weight of the step, the gap will be narrowed for the previous step 5, or the gap will be narrowed for the next step because the front wheel 6 stops moving there. Step 5, the smooth steering operation of step 5 will be destroyed. Therefore, the length of the bearing pitch P of the link 24 must be longer than the maximum center displacement W.

By making the length of the shaft support pitch P of the link 24 longer than the maximum center displacement W, as described above, the front wheel 6 moving on the path protruding toward the outside with respect to the moving path of the step chain can smoothly turn partly. In this way, the above-mentioned problems can be avoided. When the front wheel 6 reaches the horizontal part of the guide rail 10' in the return path side, the link 24 will return to the initial position parallel to the step chain 12.

At that time, the rear wheel 7 is guided by the guide rail 11' having a different path than the guide rail 10'.

The moving state of the step 5 from the forward path to the return path in the upper machine room will be described in detail below with reference to FIG. 2 . As shown in FIG. 2, the step 5 (a) moving from the left-hand side to the right-hand side on the guide rails 10, 11 is in such a state that the link 24 connected to the axle 8 of the front wheel 6 and the step chain 12 parallel, while the link shaft 25 of the connecting part of the link 24 and the step chain 12 is located in the rear position in the direction of movement of the steps 5 .

When the step 5(a) in this state reaches the outer periphery of the step chain drive sprocket 13 along with the movement of the chain 12, initially the front wheel 6 is guided along the hemispherical portion of the guide rail 10, and then the rear wheel is It is guided along the hemispherical section of the guide rail 11 . The steps 5(b) guided as described above start to incline through the outer periphery of the step chain drive sprockets 13, while the ends of the steps in the moving direction are guided downward.

Meanwhile, due to the radius of rotation and the center of rotation of the guide rails 10 and 11 and the radius of rotation and the center of rotation of the step chain transmission sprocket 13 are different due to the depth dimension of the step 5 (b), that is to say, due to the movement path of the front wheel 6 is positioned toward the outside with respect to the moving direction of the moving path of the step chain 12, so that the link 24 can be pivotally displaced by a difference of a different size (center offset size). Since there are gaps between the mutually adjacent steps 5(b)-5(a) and 5(b)-5(c) at the turns, the interference between the mutually adjacent steps can be eliminated, thereby The turning operation of the steps can be performed smoothly.

The inclination of the pedals also increases as the step 5 moves from 5(b) to 5(c), with the pedals facing downwards when the steps pass the midpoint of the turning section. When the inclination of the steps changed, as shown in Figure 6(1), 6(2), the front wheel 6 could move up the outer periphery of the step chain drive sprocket 13 and separate therefrom. Then, as shown in Figure 6(3), 6(4), the front wheel 6 moves up and approaches the outer periphery of the step chain drive sprocket 13. When the steps 5(b) are guided by the guide rails 10', 11' in the return path, the treads face fully downwards and the links 24 become horizontal and parallel to the step chain 12.

As described above, by displacing the moving path of the front wheel 6 in the turning section toward the moving direction of the step chain 12, interference between mutually adjacent steps in the turning section can be eliminated, and thus, even if the steps The step diameter of chain drive sprocket 13 is done very little, and the turn-around of step also can carry out smoothly. Therefore, the turning space of the step 5 can be minimized, and the height H of the upper machine room UM can be lowered.

The turning operation of the steps in the upper machine room UM has been described above. In the lower machine room LM, the step 5F facing downward in the return path changes to face upward as the step 5 contacts the advancing path. The steering operation is performed using the stepped chain driven sprocket 14 . The mechanism and operation are similar to those in the upper machine room UM. That is, in the lower machine room LM, the turning operation of the step 5 from the return path to the forward path is by a structure similar to that when the structure of FIG. 2 is reversed by turning the figure 180 degrees. Therefore, description is omitted here.

In order to further realize the stable movement of the step drive system, it can be decided whether to set a special guide rail in the step chain 12 according to needs, especially whether to set a guide rail that rotates relative to the chain 12 and can correctly guide the front wheel 6 and the linkage. 24 dedicated rails.

The above-mentioned embodiment is carried out by taking the escalator 1 as an example, and the present invention can also be applied to moving sidewalks that move horizontally or slightly inclined. In this case, the steps may be referred to as step treads and the chain of steps may be referred to as a chain of step treads.

On the other hand, in the escalator having the above-mentioned structure, the front wheels 6 guided by the front wheel guide rails 10, 10' do limited movement (creep) in the lateral direction in the process of moving the steps 5, thereby preventing the steps 5 from colliding with such as edges. The escalator machine such as the protective cover 22 is in contact (Fig. 3).

However, if the installation accuracy of the front wheel guide rails 10, 10' is low, the front wheel 6 creeps laterally during the movement of the step 5, thereby generating a force in a direction that can change the distance between the step chain 12 and the step 5 , and, a moment load can be generated in both end portions of the link 24 as the connecting portion between the step 5 and the step chain 12 . If this moment load is repeatedly generated in both ends of the link 24, both ends will break.

Therefore, in another embodiment of the present invention, as shown in Figure 6, the bearings 30A, 30B are arranged between the connecting rod 24 and the wheel shaft 8 and between the connecting rod 24 and the connecting rod shaft 25, so that the two bearings 30A, 30B 30B is movable in the axial direction. That is, for the connection between the step chain 12 and the link shaft 25, an inner wheel 32 of the bearing 30B is inserted on the link shaft 25 provided in the special link 12B of the step chain 12 through the collar 31, And an outer wheel 34 is inserted on the outer periphery of the inner wheel 32 of these a plurality of rollers 33, in addition, a housing 35 of link 24 is arranged in the periphery of outer wheel 34, and outer wheel 34 uses a ring 36 and housing 35 is fixed, and a bearing nut 37 is arranged in the link shaft 25.

Similarly, for the connection between the linkages 24 of the front wheel 6, the inner wheel 42 of the bearing 30A is inserted on the axle 8 through the collar 41 and an outer wheel 42 is inserted on the inner wheel 42 through a plurality of rollers 43 On the outer periphery, a housing 45 of connecting rod 24 is arranged in the outer periphery of outer wheel 44, and housing 45 uses a ring 46 to fix with outer wheel 44, and a bearing nut 47 is arranged on the top of axle 8.

As mentioned above, by means of the connecting rod 24 between the axle 8 and the step chain 12 through the roller bearing, the outer wheels 34, 44 can slide and move the inner wheels 32, 42 through the rollers 33, 43, while the outer wheels 34, 44 can move , until the outer wheel 34, 44 is in contact with the collar 41, 51 or the bearing nut 36, 46.

Therefore, even if the installation accuracy of the front wheel guide rails 10, 10' is low, the front wheel 6 creeps in the horizontal direction during the movement of the steps, thereby generating a force in a direction that can change the distance between the step chain 12 and the step 5, as The moment load generated in the bearings 30A, 30B of the connecting portion of the link 24 can be suppressed at a low level, and shortening of the service life of the connecting portion can be suppressed.

In the above-described embodiment, the two bearings provided in both end portions of the link 24 are roller bearings. However, even in a case where a ball bearing is used as one bearing and a roller bearing is used as the other so that only one side can be displaced, the generated moment load can be suppressed to a low level.

Claims (9)

1. passenger conveyor, this device comprises: a plurality of steps, these steps move and circulate, and it is downward to be formed on forward in the path pedal tread pedal tread upwards and in return path; One step chain, this step chains round ground connects a plurality of steps; And a step chain-driving sprocket wheel and a step chain driven sprocket, these sprocket wheels are by making the step chain be centered around in the office, turning part between path and the return path forward the step chain is moved and circulating, wherein:

Described step is connected on the described step by a crank mechanism.

2. passenger conveyor as claimed in claim 1 is characterized in that, described crank mechanism comprises: a step axle, and this step axle broad ways is outstanding from described step; One link rod axle, this link rod axle is outstanding from described step chain in a side of described step, and described link rod axle is parallel with described step axle; And a link rod, this link rod is connected between described link rod axle and the described step axle.

3. passenger conveyor, this device comprises: a plurality of steps, these steps move and circulate, and it is downward to be formed on forward in the path pedal tread pedal tread upwards and in return path; One step chain, this step chains round ground connects a plurality of steps; And a step chain-driving sprocket wheel and a step chain driven sprocket, these sprocket wheels are by making the step chain be centered around in the office, turning part between path and the return path forward the step chain is moved and circulating, wherein:

Described step links to each other with described step chain by a link rod, described link rod with link to each other with rectangular one of described step, thereby link rod is swung in office, described turning part.

4. passenger conveyor as claimed in claim 3 is characterized in that described step comprises a pair of front-wheel and pair of rear wheels, and a sidepiece of described link rod links to each other with the wheel shaft of the described front-wheel of supporting.

5. passenger conveyor as claimed in claim 4 is characterized in that, described step chain is a pair of step chain that broad ways connects described step both sides, and described step chain is in the position that is arranged on step and described front-wheel and described trailing wheel opposite side.

6. passenger conveyor, this device comprises: a main frame that is installed between the ground that vertically separates mutually; A plurality of steps, these steps move and circulation make pedal in the path forward of described main frame towards on and in return path, face down; A pair of step chain, described step chain can connect described a plurality of step circlewise; Some front-wheels and some trailing wheels, described front-wheel and trailing wheel pass through each in the described a plurality of steps of axle supporting, move on described front-wheel and the described trailing wheel guide rail in being installed on described path forward and described return path; And step chain-driving sprocket wheel and step chain driven sprocket, these sprocket wheels are by making the step chain be centered around in the office, turning part between path and the return path forward the step chain is moved and circulating, wherein,

One device is provided with also and is connected between described step chain and the described step, and described device makes the mobile route of described front-wheel of the step that moves in described knuckle section with respect to the outside displacement towards the moving direction of described step chain of the mobile route of described step chain.

7. passenger conveyor, this device comprises: a main frame that is installed between the ground that vertically separates mutually; A plurality of steps, these steps move and circulation make pedal in the path forward of described main frame towards on and in return path, face down; A pair of step chain, described step chain can connect described a plurality of step circlewise; Some front-wheels and some trailing wheels, described front-wheel and trailing wheel pass through each in the described a plurality of steps of axle supporting, move on described front-wheel and the described trailing wheel guide rail in being installed on described path forward and described return path; And step chain-driving sprocket wheel and step chain driven sprocket, these sprocket wheels are by making the step chain be centered around in the office, turning part between path and the return path forward the step chain is moved and circulating, wherein,

The wheel shaft and the described step chain of the described front-wheel of one supporting interconnect by link rod, and are used for guide rail at the described front-wheel of described knuckle section guiding and are installed in the position with respect to the outside of the moving direction of the described step chain of the mobile route of described step chain.

8. passenger conveyor, this device comprises: a plurality of steps, these steps move and circulate, and it is downward to be formed on forward in the path pedal tread pedal tread upwards and in return path; One step chain, this step chains round ground connects a plurality of steps; And a step chain-driving sprocket wheel and a step chain driven sprocket, these sprocket wheels are by making the step chain be centered around in the office, turning part between path and the return path forward the step chain is moved and circulating, wherein:

The wheel shaft and the described step chain that support the guide wheel of described step interconnect by a link rod, and the connecting bridge of described link rod can move vertically.

9. passenger conveyor as claimed in claim 8 is characterized in that the described connecting bridge of described link rod has the bearing of a displacement vertically.

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