JP5761612B2 - Passenger conveyor - Google Patents

Description

  Embodiments of the present invention relate to passenger conveyors such as escalators and moving walkways.

  A plurality of steps of the passenger conveyor is circulated by a step chain, and this step chain is driven by a step wheel. On the other hand, a small drive wheel is attached to a motor, which is a drive mechanism for the step, via a speed reducer, and a drive chain is spanned between the large drive wheel and the small drive wheel that are mounted coaxially with the step wheel. .

  Conventionally, an emergency stop device is provided that detects the breakage or elongation of the drive chain and makes an emergency stop of the movement of the step. In this emergency stop device, a shoe as a pressing member is placed on a drive chain, this shoe can be rotated by a shoe lever, and when the shoe moves when the drive chain is cut or extended, this shoe The ratchet wheel rotates together with the lever and meshes with the ratchet wheel that is mounted coaxially with the step wheel to stop the movement of the step.

  Conventionally, as a step chain oil scattering prevention device for connecting a plurality of steps, a structure has been proposed in which dripping oil is received by an oil pan to prevent dirt on the exterior plate.

JP 2006-143424 A Japanese Utility Model Publication No. 7-13877

  The holding member provided at the lower end of the shoe lever as described above can suppress the vibration of the drive chain and prevent the oil of the drive chain from splashing due to the vibration, but the operating state is high speed. If the amount of oil supplied to the drive chain is large, there is a problem that oil is scattered from the end of the pressing member. Further, the oil scattered in this way cannot be received by the oil pan, and there is a problem that the exterior plate and the like are soiled.

  Therefore, in view of the above problems, the present invention has an object to provide a passenger conveyor that acts as an emergency stop device and can prevent oil from scattering from the drive chain when the drive chain is cut or extended. And

The present embodiment includes a plurality of steps connected endlessly and circulated, an endless step chain connecting the steps to each other, a step wheel around which the step chain is wound and driving the step chain, A large driving wheel provided coaxially with the step wheel, a driving device for driving the small driving wheel, a driving chain spanned between the large driving wheel and the small driving wheel, and coaxial with the step wheel. A ratchet wheel provided on the shoe, a shoe lever suspended around a horizontal connecting shaft provided on the truss, and a lower end of the shoe lever, which is mounted on the drive chain by its own weight. And a ratchet paw that rotates with the shoe lever about the connecting shaft and meshes with the ratchet wheel. When have, the pressing member has a connecting plate, said connecting plate is a long rectangular plate member along the longitudinal direction of the drive chain, the lower surface of said connecting plate, said step chain A sliding plate is provided, an oil cover is attached to a side surface of the connecting plate, the oil cover extends below a contact surface between the sliding plate and the drive chain, and the pressing member It is a passenger conveyor which protrudes in the front-rear direction .

It is explanatory drawing seen from the side of the escalator of this embodiment. It is a side view of a machine room on the upper floor side. It is the figure seen from the back of a ratchet beam, a ratchet pole, a pressing member, and a machine room. It is the enlarged view seen from the back of a pressing member.

  Hereinafter, the passenger conveyor which is one Embodiment of this invention is demonstrated based on FIGS. 1-4. In this embodiment, the escalator 10 is described as a passenger conveyor.

(1) Structure of the escalator 10 The structure of the escalator 10 is demonstrated based on FIG.

  A truss 12 is installed between the upper floor and the lower floor of the building where the escalator 10 is installed. A plurality of steps 14 connected endlessly are provided inside the truss 12. A pair of left and right balustrades 16, 16 are provided on the left and right sides of the upper surface of the truss 12, and a handrail 18 is provided on the periphery of the balustrade 16.

  A machine room 20 is provided on the upper floor side of the truss 12, and a motor 22 that is a drive source of the escalator 10, a speed reducer 24, and a small driving wheel provided on the output side of the speed reducer 24 are provided inside the machine room 20. 26 is provided. An endless step chain 28 is provided to move the plurality of steps 14, and a step wheel 30 is provided inside the machine room 20 to drive the step chain 28. On the other hand, a step wheel 34 is also provided in the machine room 32 on the lower floor side, and the step chain 28 is spanned between the step wheel 30 and the step wheel 34.

  A large driving wheel 36 is provided coaxially with the step wheel 30, and a driving chain 38 is stretched between the large driving wheel 36 and the small driving wheel 26. An emergency stop device 40 is provided in the upper floor side machine room 20 for detecting the occurrence of an abnormality such as cutting of the drive chain 38 and stopping the rotation of the step wheel 30. The emergency stop device 40 will be described in detail later.

(2) Structure of Emergency Stop Device 40 Next, the structure of the emergency stop device 40 will be described with reference to FIGS.

  As shown in FIG. 2, the motor 22 and the speed reduction device 24 are installed in the machine room 20 on the upper floor side as described above, and the drive small wheel 26 is attached to the speed reduction device 24. A large driving wheel 36 and a ratchet wheel 42 are provided coaxially with the step wheel 30.

  As shown in FIG. 2, a ratchet beam 46 is provided in the left-right direction of the upper surface of the machine room 20 in the frame body 44 of the truss 12 constituting the machine room 20 on the upper floor side. The ratchet beam 46 is firmly fixed to the frame body 44.

  As shown in FIG. 3, a connecting shaft 48 is rotatably provided along the ratchet beam 46. On the left side of the connecting shaft 48, a ratchet pole 50 is suspended, rotates around the connecting shaft 48, and its tip meshes with the ratchet wheel 42.

  As shown in FIG. 3, a shoe lever 52 is suspended from the right side of the connecting shaft 48, and a pressing member (shoe) 54 is provided at the lower end of the shoe lever 52. The pressing member 54 is placed on the drive chain 38 and has a connecting plate 56. The connecting plate 56 is a rectangular plate material that is long along the front-rear direction of the drive chain 38. As shown in FIG. 4, the left end is bent upward, and the lower end of the shoe lever 52 is interposed via a pin 58. It is suspended by the part so that rotation is possible. A rectangular parallelepiped sliding plate 60 is provided on the lower surface of the connecting plate 56. A groove 62 is provided in the front-rear direction of the bottom surface of the sliding plate 60. As shown in FIG. 4, the bottom surface of the sliding plate 60 is placed on the drive chain 38 except for the portion of the groove 62. Is done. The material of the sliding plate 60 is, for example, rubber or synthetic resin.

  As shown in FIG. 4, an oil cover 64 is attached to the upper surface of the connecting plate 56. The oil cover 64 is bent in an inverted L shape, the upper surface 66 of the oil cover 64 is fixed to the connecting plate 56, and the bent side plate 68 is positioned outside the drive chain 38. This side plate 68 is provided not on the inside of the machine room 20 but on the outside (building side). Inside the side plate 68, a plate-like oil absorbing material 70 is fixed by screws 72. The length of the oil cover 64 in the front-rear direction is longer than the front and rear sides of the sliding plate 60, and the side plate 68 extends below the contact surface between the sliding plate 60 and the drive chain 38. The material of the oil absorbing material 70 is paper, cloth or the like.

(3) Operation of Emergency Stop Device 40 The operation state of the emergency stop device 40 will be described.

  The pressing member 54 is always placed on the drive chain 38. Even if the escalator 10 is driven and the drive chain 38 moves, the sliding plate 60 is placed on the drive chain 38 (see FIG. 4), and the vertical vibration of the drive chain 38 is suppressed. On the other hand, the oil absorbing material 70 attached to the side surface 68 of the oil cover 64 absorbs the oil scattered from the moving drive chain 38 and can prevent the oil scattered from the drive chain 38 to the outside (building side). Oil can be prevented from splashing. In particular, the oil cover 64 is provided so as to cover the upper and outer sides of the drive chain 38, and the lower end of the side plate 68 extends below the contact surface of the drive chain 38 and the sliding plate 60. It is possible to prevent oil from splashing from the contact portion between the sliding plate 60 and the drive chain 38.

  When the drive chain 38 is cut or extended for some reason, the pressing member 54 moves downward, and the shoe lever 52 rotates with it (see FIG. 4). When the shoe lever 52 is rotated, the ratchet pole 50 is similarly rotated via the connecting shaft 48, the tip of the ratchet pole 50 is engaged with the ratchet wheel 42, the rotation of the step wheel 30 is stopped, and the escalator 10 is emergency stopped. To do. Thereby, the safety of the user of the escalator 10 can be ensured.

(4) Effects According to the above embodiment, when the drive chain 38 is moving, the oil cover 64 covers the upper surface and the outer side of the drive chain 38, so that the oil splashes from the drive chain 38, particularly the truss. Oil which scatters from 12 to the building side can be prevented. Further, since the side plate 68 extends below the contact surface between the sliding plate 60 and the drive chain 38, it is possible to prevent oil splashing from the contact portion. Therefore, even if the moving speed of the drive chain 38 increases, oil does not scatter outside the truss 12.

  Since the scattered oil is absorbed by the oil absorbing material 70, the oil does not sag from the oil cover 64. Since the oil absorbing material 70 is fixed by the screw 72, the oil absorbing material 70 can be removed from the oil cover 64 when the screw 72 is removed, and when the amount of oil absorbed by the oil absorbing material 70 exceeds a certain amount. It can be easily replaced with a new oil absorbing material 70 in maintenance work.

Example of change

  Although the escalator 10 has been described in the above embodiment, it may be applied to a moving sidewalk instead.

  Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Escalator, 12 ... Truss, 14 ... Step, 20 ... Machine room, 22 ... Motor, 24 ... Reduction gear, 26 ... Small driving wheel, 28 ... Step chain, 30 ... Step wheel, 36 ... Driving large wheel, 38 ... Driving chain, 40 ... Emergency stop device, 42 ... Ratchet wheel, 48 ... Connection shaft, 50 ... -Ratchet pole, 52 ... shoe lever, 54 ... pressing member, 56 ... connecting plate, 58 ... pin, 60 ... slip plate, 64 ... oil cover, 66 ... top surface , 68 ... side plates, 70 ... oil absorbing material, 72 ... screws

Claims (5)

A plurality of steps connected in an endless manner and circulated;
An endless step chain connecting the steps to each other;
A step wheel around which the step chain is wound to drive the step chain;
A large driving wheel provided coaxially with the step wheel;
A driving device for driving a small driving wheel;
A drive chain spanned between the drive large wheel and the drive small wheel;
A ratchet wheel provided coaxially with the step wheel;
A shoe lever suspended around a horizontal connecting shaft provided on the truss,
A pressing member attached to the lower end of the shoe lever and placed on the drive chain by its own weight;
A ratchet pole that rotates with the shoe lever about the connecting shaft and meshes with the ratchet wheel;
Have
The pressing member has a connecting plate, and the connecting plate is a long rectangular plate material along the front-rear direction of the drive chain,
On the lower surface of the connecting plate is provided a sliding plate that contacts the step chain,
An oil cover is attached to a side surface of the connecting plate, and the oil cover extends below a contact surface between the sliding plate and the drive chain and protrudes in the front-rear direction from the pressing member. ,
Passenger conveyor. The oil cover is located outside the drive chain;
The passenger conveyor according to claim 1. A front and rear groove corresponding to the step chain is provided on the bottom surface of the sliding plate.
The passenger conveyor according to claim 1 or 2. An oil absorbing material is provided in the oil cover,
The passenger conveyor as described in any one of Claims 1 thru | or 3. The oil absorbing material is detachable from the oil cover,
The passenger conveyor according to claim 4.

Images