HK1151784A - Passenger conveying apparatus - Google Patents

Description

Passenger conveying equipment

Technical Field

The present invention relates to a passenger conveyor such as an escalator in which a plurality of steps for conveying passengers have a level difference in an inclined area and an electric step having no level difference between adjacent steps.

Background

In a known escalator as one of passenger conveyor apparatuses, there is a frame body provided across between an upper floor and a lower floor of a building and a plurality of steps that circulate in the frame body. The steps are circularly moved by step chains and wheels provided in the frame body, and the wheels are guided by the guide rails. The escalator supplies lubricating oil to the step chain, and is provided with an oil discharge structure to prevent the lubricating oil from dropping on the steps and polluting the steps.

For example, patent document 1 discloses a configuration in which an oil drain plate is configured to be disposed in an overlapped state along a longitudinal direction of a step guide rail, a gap is formed below a guide surface of a guide rail of a return-side step disposed within a horizontal projected plane of the step, one edge portion in a vertical direction cross section of the oil drain plate is disposed to protrude further toward a center side of the step than an edge portion of the guide surface of a corresponding guide rail, and the other edge portion is disposed below the one edge portion and outside the horizontal projected plane of the step.

Japanese patent application laid-open No. 2001-151451 of patent document 1

In the conventional passenger conveyor, since the oil drain plate is provided along the longitudinal direction of the guide rail on the return side, the length of the oil drain plate must be set to be equal to the length of the guide rail on the return side. Therefore, there are problems such as a long time for installing the drain plate and an increase in material cost.

Disclosure of Invention

An object of the present invention is to provide a passenger conveyor capable of solving the above-described problems, in which the time required for installing an oil guide plate can be shortened and the material cost can be reduced by providing a minimum oil guide plate and guiding lubricating oil dripping from a guide rail to prevent the lubricating oil from dripping onto a step.

In order to achieve the above object, the present invention provides a passenger conveyor having: a frame body that is provided on a building and has, at both end portions in a longitudinal direction, entrance/exit floors formed flush with a floor surface of the building; a plurality of steps that are connected in a loop shape by a step chain and that circulate within the frame body; and a guide rail provided in the frame body for guiding the steps, wherein an oil guide plate is provided below a fixing portion for fixing the guide rail on the forward side to the frame body, and the oil guide plate guides lubricating oil that has dropped from the step chain to the guide rail and then further from the guide rail to the outside of the steps on the return side.

Effects of the invention

According to the present invention, the installation work time of the oil guide plate can be shortened and the material cost can be reduced by installing the minimum oil guide plate.

Drawings

Fig. 1 is a side view schematically showing an example of an escalator as a 1 st embodiment of a passenger conveyor according to the present invention.

Fig. 2 is a cross-sectional view taken along line 2A-2A of fig. 1.

Fig. 3 is a perspective view showing a guide rail on the approach side where no oil guide plate is provided.

Fig. 4 is a perspective view showing a guide rail on the approach side to which an oil guide plate is attached in the escalator of embodiment 1.

Fig. 5 is a cross-sectional view taken along line 5A-5A of fig. 4.

Fig. 6 is a plan view showing a portion near the connection portion S1 in fig. 4.

Fig. 7 is a plan view showing an example of attachment of the oil guide plate in the escalator according to embodiment 2.

Fig. 8 is a plan view showing an example of attachment of the oil guide plate in the escalator according to embodiment 3.

Description of the symbols

1-escalator

4-frame body

5-step

5A-front wheel

5B-rear wheel

16A, 16B-entrance floor

18A-upper front wheel guide rail on the way side of the road

18B-lower front wheel guide rail on go side

19A-Upper rear wheel guide of go road side

19B-lower rear wheel guide rail on go road side

22-inclined front and rear wheel guide rail on the way side of the road

23A-oil guide plate for upper front wheel guide rail

23B-oil guide plate for upper rear wheel guide rail

24A-oil guide plate for lower front wheel guide rail

24B-oil guide plate for lower rear wheel guide rail

25a, 25b, 26a, 26 b-left and right end portions

25c, 26c-V shaped grooves

S1, S2, T1, T2-anchoring moieties

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1

Fig. 1 is a side view schematically showing the overall structure of embodiment 1 of an escalator as one type of passenger conveyor. Fig. 2 is a cross-sectional view taken along line 2A-2A of fig. 1 (the balustrade 6 is not shown).

The escalator 1 includes: a frame body 4 provided across the upper floor 2 and the lower floor 3 of the building; a plurality of steps 5 that circulate in the frame body 4; a pair of left and right balustrades 6 provided vertically along the traveling direction of the steps 5 on both sides in the width direction of the frame body 4; and a moving handrail 7 that moves in synchronization with the moving speed of the steps 5 under the guidance of the peripheral edge of the balustrade 6. The frame body 4 is constituted by an upper horizontal portion 4A which is a horizontal portion on the upper floor 2 side, a lower horizontal portion 4B which is a horizontal portion on the lower floor 3 side, and an inclined portion 4C between the upper horizontal portion 4A and the lower horizontal portion 4B.

An upper machine chamber 10 is provided at an upper end portion of the frame body 4, and a lower machine chamber 12 is provided at a lower end portion of the frame body 4. The upper machine room 10 is provided therein with a drive device 8 and a drive sprocket 9. The lower machine room 12 is provided with a driven sprocket 11, a step chain tensioner (not shown), and the like. Entrance floors 16A and 16B flush with the floor surfaces of the upper floor 2 and the lower floor 3 are mounted on the upper surfaces of the upper machine room 10 and the lower machine room 12, respectively.

In each step 5, the front side of the step 5 is supported by a chain shaft 17A attached to a step chain 17, the end of which is attached with a front wheel 5A, and the rear side of the step 5 supports the load of the passenger by a rear wheel 5B attached to the step 5. The step 5a on the outgoing side travels on the guide rail 22 (upper side in fig. 1 and 2) on the outgoing side, and the step 5b on the returning side travels on the guide rails 20 and 21 (lower side in fig. 1 and 2) on the returning side.

The step chain 17 is wound around the drive sprocket 9 and the driven sprocket 11, and the drive sprocket 9 is driven by the drive device 8, whereby the step chain 17 is circularly moved in an endless manner.

Fig. 3 is a perspective view showing the step chain 17 and 1 step 5a of the steps 5a that circulate on the forward side, the forward side guide rail. As shown in fig. 3, the guide rail on the forward side is composed of guide rails 18A, 19A provided separately, guide rails 18B, 19B provided separately, and inclined front and rear wheel guide rails 22, the guide rails 18A, 19A guide the front wheels 5A and the rear wheels 5B, respectively, in the upper horizontal portion 4A, the guide rails 18B, 19B guide the front wheels 5A and the rear wheels 5B, respectively, in the lower horizontal portion 4B, the inclined front and rear wheel guide rails 22 provided in the inclined portion 4C are integrally formed of a guide rail that guides the front wheels 5A and a guide rail that guides the rear wheels 5B, and both ends of the inclined front and rear wheel guide rails 22 are connected to the upper guide rails 18A, 19A and the lower guide rails 18B, 19B, respectively. Specifically, the upper side rails 18A, 19A are constituted by an upper front wheel rail 18A for guiding the front wheels 5A, and an upper rear wheel rail 19A for guiding the rear wheels 5B, which is provided inside the upper front wheel rail 18A in parallel with the upper front wheel rail 18A. Similarly, the lower side rails 18B, 19B are constituted by a lower front wheel rail 18B for guiding the front wheels 5A, and a lower rear wheel rail 19B for guiding the rear wheels 5B, which is provided inside the lower front wheel rail 18B in parallel with the lower front wheel rail 18B. As shown in fig. 2, on the return side, the difference in height between the front wheels 5A and the rear wheels 5B running on the guide rails is large, and the guide rail 21 on the front wheel side and the guide rail 20 on the rear wheel side are always configured independently of each other (separately configured).

As shown in fig. 3, the upper front wheel rail 18A, the upper rear wheel rail 19A, the lower front wheel rail 18B, the lower rear wheel rail 19B, and the inclined front and rear wheel rail 22 are formed by 1 rail unit or by connecting a plurality of rail units to each other. In particular, since the inclined front and rear wheel rails 22 have a long length, they are formed by connecting a plurality of rail units having an appropriate length (for example, 1 to 3 m). The guide rails 18A, 18B, 19A, 19B, 22 are fixed to the frame body 4 by bolts or the like, and at these fixing portions S1, S2, the rail units constituting the guide rails are connected to each other.

According to the configuration shown in fig. 3, since the step chain 17 passes through the front wheel rails 18A, 18B, the lubricating oil supplied to the step chain 17 scatters or drips on the front wheel rails 18A, 18B and the rear wheel rails 19A, 19B. Specifically, in the upper horizontal portion 4A, the lubricating oil drops onto the upper front wheel rail 18A and the upper rear wheel rail 19A and flows down on the rails, and the flowing lubricating oil drops onto the fixed portion S1, which is the connecting portion of the inclined portion front and rear wheel rails 22. A return-side step 5b is provided directly below the outgoing-side guide rails 18A, 19A, and oil dropping from the fixed portion S1 may drip on the step 5b to contaminate the step 5 b. Similarly, at the fixed portion S2, which is the connecting portion between the lower front wheel rail 18B, the lower rear wheel rail 19B, and the inclined front and rear wheel rails 22, the oil dropping from the inclined front and rear wheel rails 22 drops onto the return path side step 5B.

In the present embodiment, an oil guide plate is provided below the fixing portions S1, S2 of the guide rails 18A, 18B, 19A, 19B, 22 on the outward route side, and this oil guide plate guides the lubricating oil dropping from the guide rails 18A, 18B, 19A, 19B, 22 to drop to the outside of the step 5B on the inward route side. Fig. 4 is a perspective view showing the escalator of the present embodiment to which the oil guide plate is attached. Fig. 5 is a cross-sectional view taken along line 5A-5A of fig. 4. Fig. 6 is a plan view of the vicinity of the fixing portion S1 of fig. 4.

As shown in fig. 4, the oil guide plates are attached to the upper fixed part S1 and the lower fixed part S2, and are composed of an upper front wheel rail oil guide plate 23A attached to the upper front wheel rail 18A side, an upper rear wheel rail oil guide plate 23B attached to the upper rear wheel rail 19A side, a lower front wheel rail oil guide plate 24A attached to the lower front wheel rail 18B side, and a lower rear wheel rail oil guide plate 24B attached to the lower rear wheel rail 19B side.

As shown in fig. 5 and 6, each of the oil guide plates 23A, 23B is formed by cutting and bending a panel. The left and right end portions 25a, 25B, 26a, 26B of the oil guide plates 23A, 23B in the direction parallel to the guide rails 18A, 19A are bent upward. The outer sides (left end portions) 25a and 26a of the oil guide plates 23A and 23B are formed to be longer than the inner sides (right end portions) 25B and 26B in the lower direction. The lower end portions of the oil guide plates 23A, 23B are respectively bent in a V shape. The V-shaped bending is to bend the lower end portion toward the lower side (back side) and then turn it back toward the upper side (front side) to form V-shaped grooves 25c and 26 c. The oil guide plates 23A and 23B are provided at a predetermined interval from the lower surfaces (rear surfaces) of the upper front wheel rail 18A and the upper rear wheel rail 19A, and the upper edges of the lower end portions of the grooves 25c and 26c bent in a V shape abut against the lower surfaces (rear surfaces) of the rails. The outer sides (left end portions) 25a and 26a of the oil guide plates 23A and 23B are located outward of the side ends of the return-side steps 5B (outward of the width W of the return-side steps 5B in the drawing).

According to the above configuration, at the fixing portion S1, the lubricating oil dropped from the upper guide rails 18A, 19A is received by the oil guide plates 23A, 23B. Since the left and right end portions 25a, 25B, 26a, 26B of the oil guide plates 23A, 23B are bent upward, the oil on the oil guide plates flows down toward the lower end portions without dropping from the left and right end portions 25a, 25B, 26a, 26B. Further, since the V-shaped grooves 25c, 26c are formed at the lower end portions, the lubricating oil flowing down can be collected together. Since the outer sides (left end portions) 25a and 26a of the oil guide plates 23A and 23B are formed to be longer than the inner sides (right end portions) 25B and 26B in the lower direction, the positions of the inner sides of the V-shaped grooves 25c and 26c are higher than the positions of the outer sides, and thus the lubricating oil collected in the V-shaped grooves 25c and 26c flows down to the outer side by the action of gravity. Since the left end portions 25a and 26a are provided at positions further outside than the side ends of the return-side step 5b, the lubricating oil dropped from the V-shaped grooves 25c and 26c drops outside the step 5b and does not drop on the return-side step 5 b. Further, the oil dropping from the oil guide plates 23A, 23B is collected in an oil reservoir 28 provided below the oil guide plates 23A, 23B.

In the present embodiment, the left end portion 26a of the oil guide plate for rear wheel rail 23B is provided above the step chain 17 on the return side. Thus, the oil dropped from the oil guide plate for rear wheel rail 23B is supplied to the step chain 17 on the return side, and can be used again as the lubricating oil of the step chain 17. That is, the lubricating oil that has been produced in the step chain 17 on the forward side can be effectively used as the lubricating oil for the step chain 17 on the return side.

The lower front wheel rail oil guide plate 24A and the lower rear wheel rail oil guide plate 24B provided in the lower fixing portion S2 have the same configuration, operation, and effect as the upper front wheel rail oil guide plate 23A and the upper rear wheel rail oil guide plate 23B.

According to the escalator 1 of the present embodiment, the oil guide plates 23A, 23B are provided below the fixing portions S1 of the guide rails 18A, 19A, 22 on the outward route side, so that the lubricating oil flowing down from the guide rails 18A, 19A can be urged to drop to the outside of the step 5B on the return route side, and the step 5B can be prevented from being soiled. In particular, since the oil dropping from the step chain 17 onto the guide rails 18A and 19A drops onto the fixing portion S1, in the present embodiment, only the small oil guide plates 23A and 23B having the minimum area are provided in the fixing portion S1, and this structure can prevent the steps 5B from being soiled. Compared with the prior art that the length of the oil discharge plate is the same as that of the guide rail, the small oil guide plate can be used, so that the installation time of the oil guide plate can be shortened, and the material cost required for manufacturing can be reduced.

Embodiment 2

Fig. 7 is a sectional view showing a structure in the vicinity of an oil guide plate of an escalator according to embodiment 2 of the present invention. The escalator of the present embodiment has basically the same configuration as the oil guide plates 23A, 23B, 24A, 24B described with reference to fig. 4 to 6. While the oil guide plates 23A, 23B of fig. 4 are provided in the fixed portion S1, which is the connecting portion of the upper front wheel rail 18A and the inclined front-rear wheel rail 22 and the upper rear wheel rail 19A and the inclined front-rear wheel rail 22 in embodiment 1, the oil guide plates are provided in the fixed portions of the upper front wheel rail 18A and the upper rear wheel rail 19A on the outward side in the present embodiment (T1 of fig. 4).

As shown in fig. 7, a step chain guide 31 for guiding the step chain 17 is provided in parallel between the upper front wheel guide 18A and the upper rear wheel guide 19A at a position closer to the upper doorway floor 16A than the fixing portion S1. Near the lower end of the step chain guide 31, oil guide plates 32A and 32B are provided at a fixing portion T1 for fixing the upper front wheel rail 18A and the upper rear wheel rail 19A to the frame body 4. Since the upper front wheel rail 18A is provided at a position higher than the upper rear wheel rail 19A, the upper front wheel rail oil guide plate 32A attached to the upper front wheel rail 18A is provided at a position closer to the upper doorway floor 16A side (upward in the drawing) than the upper rear wheel rail oil guide plate 32B.

The upper front wheel rail oil guide plate 32A receives oil dropping from the upper front wheel rail 18A and the step chain rail 31 at the fixing portion T1, and drops the oil to the outside of the return side step 5B or the upper rear wheel rail oil guide plate 32B. The upper rear wheel guide plate 32B receives oil dropping from the upper rear wheel guide plate 19A, the step chain guide plate 31, and the upper front wheel guide plate 32A, and guides the oil to drop onto the step chain 17 on the return path side.

Embodiment 3

Fig. 8 is a sectional view showing a structure in the vicinity of an oil guide plate of an escalator according to embodiment 3 of the present invention. The escalator of the present embodiment has basically the same configuration as the oil guide plates 32A and 32B described with reference to fig. 7. While the oil guide plates 32A, 32B of fig. 7 are provided at the fixed portion T1 in the 2 nd embodiment, the oil guide plates are provided at the fixed portions of the lower front wheel rail 18B and the lower rear wheel rail 19B in the present embodiment (T2 of fig. 4).

As shown in fig. 8, the lower front-wheel-rail oil guide plate 33A receives oil dropping from the lower front wheel rail 18B at the fixing portion T2, and guides the oil to the outside of the return-side step 5B or the lower rear-wheel-rail oil guide plate 33B. The lower rear wheel rail oil guide plate 33B receives oil dropping from the lower rear wheel rail 19B and the lower front wheel rail oil guide plate 33A, and guides the oil to drop onto the step chain 17 on the return path side.

In the embodiments 1 to 3, the oil guide plates provided in the respective fixed sections S1, S2, T1, and T2 were described, but the oil guide plates may be provided in all the fixed sections S1, S2, T1, and T2 shown in fig. 4. Further, the oil guide plate may be provided at a fixed portion for connecting the rail units of the inclined front and rear wheel rails 22 constituting the leading side of the inclined portion 4C to each other.

Industrial applicability

In the above embodiment, the description has been given with the escalator as an example of the passenger conveyor, but the present invention can also obtain the same operation and effect in the electric step or the like in which the portion corresponding to the inclined portion 4C described above is horizontally configured.

Claims (7)

1. A passenger conveyor apparatus having: a frame body that is provided on a building and has, at both end portions in a longitudinal direction, entrance/exit floors formed flush with a floor surface of the building; a plurality of steps that are connected in a loop shape by a step chain and that circulate within the frame body; and a guide rail provided in the frame body for guiding the steps, the passenger conveyor being characterized in that,

an oil guide plate is provided below a fixing portion for fixing the guide rail on the forward side to the frame body, and the oil guide plate guides the lubricating oil that has dropped from the step chain to the guide rail and then further dropped from the guide rail to the outside of the step on the return side.

2. The passenger conveyor of claim 1,

the oil guide plate is configured such that right and left end portions in a direction parallel to the guide rail are bent upward, the bent portion is formed such that an outer side is longer than an inner side in a lower direction, and a lower end portion of the oil guide plate is bent in a V shape to have a V-shaped groove from which oil on the oil guide plate drops to the outside.

3. The passenger conveyor of claim 1,

the upper edge of the lower end portion bent in a V-shape abuts against the back surface of the guide rail.

4. The passenger conveyor of claim 1,

the guide rail on the side of the removal path is formed by connecting a plurality of guide rail units in the longitudinal direction, the connection being made at the fixed portion.

5. The passenger conveyor of claim 1,

the oil guide plate has an oil guide plate for a front wheel rail provided below a front wheel attached to a chain shaft to support the step, and an oil guide plate for a rear wheel rail provided inside the front wheel rail and below a rear wheel attached to the step to support the step, and the chain shaft is attached to the step chain.

6. The passenger conveyor of claim 5,

the oil guide plate for the rear wheel rail is provided so that an outer side thereof is positioned above the step chain on the return path side in order to cause the lubricating oil guided by the V-shaped groove to drop onto the step chain on the return path side.

7. The passenger conveyor of claim 5 or 6,

the guide rail on the side of the removal road is composed of a front wheel guide rail, a rear wheel guide rail and front and rear wheel guide rails, the front wheel guide rail is arranged near the entrance floor and used for guiding the front wheels, the rear wheel guide rail and the front wheel guide rail are arranged on the inner side of the front wheel guide rail in parallel and used for guiding the rear wheels, two ends of the front and rear wheel guide rails are respectively connected with the front wheel guide rail and the rear wheel guide rail, and the front wheel guide rail and the rear wheel guide rail are integrally formed.