JP2013139328A - Inclined passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inclined passenger conveyor capable of preventing a step from descending downward in a conveyance direction when stopping, even if a step chain is broken.SOLUTION: A step braking device 23 is provided for braking a step 3 when stopped, in addition to a braking device 13 provided in a drive device 4. By this arrangement, the step 3 is fixed to a frame 2 without descending, even if a step chain 6 breaks down, so that the safety of a passenger on the step 3 of an inclined passenger conveyor can be secured. Further, even when the passenger cannot help but use the conveyor as a passage at the operation stop, the passenger can safely move by fixing the step 3 itself.

Description

  The present invention relates to an inclined passenger conveyor such as an escalator or a moving sidewalk, and in particular, even if the step chain is broken, the step of the inclined passenger conveyor on which the passenger is boarding does not descend downward in the conveying direction. Furthermore, the present invention relates to an inclined passenger conveyor suitable for using an escalator, an inclined moving sidewalk or the like as a passage when operation is stopped.

  Generally, inclined passenger conveyors are installed on the upper floor side of the frame body, in the frame body installed on the building structure, power is transmitted from the drive device installed on the upper floor side of the frame body to the drive chain. The power is transmitted to the steps connected endlessly by the step chain via the driven sprocket.

  Usually, as shown in Patent Document 1, a braking device in an inclined passenger conveyor is provided in a drive device installed on the upper side of the frame body. Then, by stopping the drive motor or the like by the braking device in an emergency, the passenger conveyor is stopped by applying a braking force to the stair chain via the drive chain.

  In addition, as shown in Patent Document 2, an auxiliary brake device is provided outside a normal brake device, and in the event of an abnormality, it engages with a connecting body that connects the treads endlessly to give a braking force to the drive chain. In addition, a configuration is disclosed in which the tread can be stopped even when the connecting body or the like is broken. The installation position of the auxiliary brake device is not particularly limited, but it is desirable to provide it as low as possible. If it is installed in the lower direction, it is described that it is possible to prevent the tread from flowing even if the connected body breaks. It consists of a single auxiliary brake device.

JP 2000-95469 A JP 59-163287 A

  In general, when the inclined passenger conveyor stops operation in the event of a power failure or emergency, the inclined passenger conveyor is braked by a braking device provided in a driving device installed on the upper floor side of the frame. Stopped. Further, when the drive chain is broken, the lowering of the steps is prevented in many cases by directly braking the drive sprocket installed on the upper floor side of the frame.

  However, in the unlikely event that the step chain breaks, the braking force of the braking device provided in the drive device installed on the upper floor side of the frame body or the drive sprocket installed on the upper floor side of the frame body It becomes impossible to transmit the braking force generated by direct braking to the steps.

  Then, although the method of braking directly the connection body of a step like the said patent document 2 is considered, the connection body of the step used for a general inclination type passenger conveyor has a shape like a general step chain. In many cases, it is complicated, and it is often difficult to sandwich the connector itself.

  In many cases, the connecting part between the step chain and the step is provided with a connecting member such as a connecting shaft on the step chain. In this case, the pinching body fixed to the frame interferes with the connecting member. This hinders the movement and makes it impossible to operate the passenger conveyor.

  It is an object of the present invention to prevent a step from descending due to the load of a passenger on board in a tilted passenger conveyor using a general step chain even if the step chain is broken. It is another object of the present invention to provide an inclined passenger conveyor suitable for using an escalator, an inclined moving sidewalk, etc. as an evacuation passage or the like when an emergency operation is stopped.

  The present invention relates to a frame that is installed at an inclination on the upper and lower floors of a building structure, a plurality of steps that are connected to an endless step chain guided in the frame and circulates, and a frame around which the step chain is wound. In an inclined passenger conveyor provided with a driving sprocket and a driven sprocket provided on the upper or lower part of the body, a driving device for driving the driving sprocket, and a braking device provided on the driving device, at a position facing the bottom of the step, A step brake device is provided that directly presses a step to brake and hold the step.

  In the inclined type passenger conveyor, a braking plate extending along the conveying direction of the inclined type passenger conveyor is provided at the bottom of the step so that a plurality of steps are braked by pressing the braking plate with the step brake device. It is fixed.

  In the inclined passenger conveyor, the brake plate is provided on the inner side in the step width direction than the pair of bearings supporting the step shaft connected to the step chain.

  In the inclined passenger conveyor, the step brake device has a pair of brake bodies that sandwich a brake plate.

  Further, in the above-described inclined type passenger conveyor, a step brake device is provided on an outward path side on which an endless step passenger who circulates and moves in an inclined portion of the frame body or on a return path side on which no passenger is boarded, and the step is directly braked. It is characterized by.

  Further, the inclined passenger conveyor is characterized in that a plurality of step brake devices are provided.

  The present invention relates to a frame that is installed at an inclination on the upper and lower floors of a building structure, a plurality of steps that are connected to an endless step chain guided in the frame and circulates, and a frame around which the step chain is wound. In an inclined passenger conveyor provided with a driving sprocket and a driven sprocket provided on the upper or lower part of the body, a driving device for driving the driving sprocket, and a braking device provided on the driving device, at a position facing the bottom of the step, By providing a step brake device that directly presses the step and brakes and holds the step, by providing a means to hold the step itself when operation is stopped, passengers who are on board even if the step chain breaks It is possible to prevent the step from descending due to the weighting.

  In addition, when the operation of the inclined type inclined passenger conveyor is stopped, in a situation where the passenger has to use it as an evacuation passage or the like, the step itself is braked and fixed, thereby guaranteeing the movement of the passenger more safely. be able to.

The side view which shows the Example of the inclination type passenger conveyor by this invention. The schematic diagram which shows the Example of the braking device of the inclination type passenger conveyor by this invention. The schematic diagram which shows arrangement | positioning of the braking device of the inclination type passenger conveyor by this invention. The A direction arrow directional view in FIG.

  An embodiment of an inclined passenger conveyor according to the present invention will be described below based on the escalator shown in FIGS.

  In FIG. 1, an escalator 1 is installed in a building structure and includes a frame 2 composed of an upper horizontal frame 2A, a lower horizontal frame 2B, and an intermediate inclined frame 2C, and is guided in the frame 2 to circulate between the upper and lower floors. A plurality of steps 3, a driving device 4 that is installed on the upper horizontal frame 2 </ b> A and drives the steps 3, and a pair of left and right balustrades 5 that are erected on the frame body 2 along the moving direction of the steps 3. An endless moving handrail 15 driven in synchronism with the step 3 is guided around the balustrade 5.

  The step 3 has a step board S on which the passenger who faces the upper side always rides on the forward side, and is connected to a pair of left and right endless step chains 6 on both sides in the width direction. These left and right step chains 6 are wound around a drive sprocket 7 supported in the upper horizontal frame 2A and a driven sprocket 8 supported in the lower horizontal frame 2B. The drive device 4 and the drive sprocket 7 may be provided in the lower horizontal frame 2B, and the driven sprocket 8 may be provided in the upper horizontal frame 2A.

  The drive device 4 includes an electric motor 9, a speed reducer 10 that decelerates the rotation of the electric motor 9, a power transmission sprocket 11 provided on the output shaft of the speed reducer 10, and a drive that transmits the power of the power transmission sprocket 11 to the drive sprocket 7. A chain 12 and a braking device 13 provided on the input shaft side of the speed reducer 10 are provided. The driving device 4 composed of these elements is operated by various control signals from the control device 14.

  Further, as shown in FIGS. 2A and 3, in the step 3, the front shaft 17 is supported by the pair of left and right triangular brackets 20 </ b> A via the bearings 16, and the rear shaft 28 is supported. Front wheels 18 as guide rollers are rotatably provided on both sides of the front shaft 17, and rear wheels 18B as other guide rollers are rotatably provided on both sides of the rear shaft 28. These front wheels 18A are guided by guide rails 19A fixed in the frame 2, and the rear wheels 18B are guided by guide rails 19B fixed in the frame 2. Further, the left and right step chains 6 are connected to the front shaft 17, and the step 3 is connected to the step chain 6 via the front shaft 17.

  A triangular bracket 20B is newly arranged below each of the steps 3 in the middle of the left and right triangular brackets 20A. The triangular brackets 20A and 20B serve to firmly fix the tread plate S and the riser 21, respectively. On the lower side of the triangular bracket 20B, the brake plate 22 is fixedly disposed by bolts 29. When moving, it moves cyclically in conjunction with the step 3.

  3 shows an example in which a triangular bracket 20B is newly provided to provide the brake plate 22. However, the present invention is not limited to this, and any structure can be used as long as the brake plate 22 is fixed to the bottom of the step 3. It may be. For example, the triangular bracket 20B may be a bracket of another shape instead of a triangle.

  The brake plate 22 is a brake plate that extends along the conveying direction of the inclined passenger conveyor, and is provided so as to protrude below the steps 3. At this time, as shown in FIG. 4, by providing a brake plate 22 on the inner side in the step width direction than the pair of bearings 16 that support the step shaft (front shaft 17) connected to the step chain 6, Can prevent interference.

  On the other hand, a plurality of step brake devices 23 are arranged in the intermediate inclined frame 2C. As shown in FIGS. 2B and 3, the step brake devices 23 are provided with brake bodies 24A and 24B for sandwiching the brake plate 22. Opposed. It is sufficient that at least one step brake device 23 is provided, but it is preferable to provide a plurality of step brake devices 23 because the braking force increases. The step brake device 23 is provided at a position facing the bottom of the step 3 (on the side opposite to the step board S) (below the step 3 in this embodiment).

  In FIG. 3, the step brake device 23 has levers 25A and 25B for clamping the brake plate 22 by the brake bodies 24A and 24B, and brakes the brake plate 22 by pressing the lever 25B by the pressing spring 26. It has a structure to do. At the time of escalator operation, the brakes 24A and 24B are separated from the brake plate 22 by pressing the lever 25A with the electromagnet 27 or the like against the pressing spring 26, and the escalator can be operated.

  A plurality of step brake devices 23 are installed according to the floor height of the inclined passenger conveyor. When the escalator 1 is stopped, the electromagnet 27 is de-energized and the pressing spring 26 of the step brake device 23 is operated, so that the brake bodies 24A and 24B clamp the brake plate 22 to brake it. At this time, if the end portions of the brake bodies 24A and 24B and the end portions of the brake plate 22 collide with each other, the structure is damaged. It is desirable that the portion has a shape having an R surface or an inclined surface.

  As described above, during braking of the escalator 1, the brake plate 22 of each tread plate 3 is reliably and stably fixed to the frame body 2, so that the step 3 is fixed to the frame body 2 as a result. Is done. In particular, even if the step chain 6 is broken, the step 3 is braked and fixed from below by the step brake device 23 without being lowered downward in the transport direction, so that the safety of the passenger is ensured.

  Further, when the operation of the inclined passenger conveyor is stopped, the step 3 can be stably and firmly fixed to the frame body 2 even in a situation where the passenger has to use it as an evacuation passage in an emergency. Therefore, passengers on the passenger conveyor can move and evacuate more safely.

  By the way, although the above-described operation has been described as an example in the event of a power failure or emergency, particularly when the step chain 6 is broken, the braking device 4 provided in the driving device installed on the upper side of the frame body, Alternatively, the escalator 1 can be supplementarily braked by operating it even when a braking device (not shown) that directly brakes the drive sprocket 7 breaks down.

  Furthermore, although the above description demonstrated the escalator 1 as an example as an inclination type passenger conveyor, it cannot be overemphasized that this invention can be applied also to the moving sidewalk etc. which are inclined and installed. In the present specification, a step of a moving sidewalk is also called a step. In the case of a moving sidewalk, the front wheel and the rear wheel may be provided separately, or the front wheel and the rear wheel may be shared by adjacent steps, and a common guide roller may be provided for adjacent steps.

  Moreover, although the example which provided the step brake device 23 in the outward path | route which carries the passenger of step 3 was shown in the Example, you may provide in the return path side which does not board a passenger, and it provides in both the outward path side and the return path side. May be. Even when it is provided on the return path side, since it is provided at a position facing the bottom of the step 3 (opposite to the tread plate S), it is above the step 3 that is inverted (the bottom is facing upward) on the return path side.

  INDUSTRIAL APPLICABILITY The present invention can be used for an inclined passenger conveyor such as an escalator or a moving sidewalk installed at an inclination.

1: Escalator 2: Frame 2A: Upper horizontal frame 2B: Lower horizontal frame 2C: Intermediate inclined frame 3: Step S: Step plate 4: Drive device 6: Step chain 7: Drive sprocket 8: Driven sprocket 9: Electric motor 11: Power Transmission sprocket 12: Drive chain 13: Braking device 14: Control device 16: Bearing 17: Front shaft 18A: Front wheel 18B: Rear wheel 19A, 19B: Guide rail 20A, 20B: Triangular bracket 21: Riser 22: Braking plate 23: Step Braking device 24A: Braking body 1
24B: Braking body 2
25A: Lever 1
25B: Lever 2
26: Pressing spring 27: Electromagnet

Claims (6)

A frame body installed at an inclination on the upper and lower floors of a building structure, a plurality of steps connected to an endless step chain guided in the frame body and circulated, and the frame around which the step chain is wound In an inclined passenger conveyor provided with a drive sprocket and a driven sprocket provided at the upper or lower part of the motor, a drive device for driving the drive sprocket, and a braking device provided in the drive device,
An inclined type passenger conveyor provided with a step brake device that directly presses the step to brake and hold the step at a position facing the bottom of the step. In the inclined passenger conveyor according to claim 1,
A brake plate extending along the conveying direction of the inclined passenger conveyor is provided protruding from the bottom of the step, and the steps are braked to fix the plurality of steps by pressing the brake plate. Characteristic inclined passenger conveyor. In the inclined passenger conveyor according to claim 2,
The inclined type passenger conveyor, wherein the braking plate is provided on the inner side in the step width direction with respect to a pair of bearings that support a step shaft connected to the step chain. In the inclined type passenger conveyor according to claim 2 or 3,
The step type braking device includes a pair of braking bodies that sandwich the braking plate. In the inclined type passenger conveyor according to any one of claims 1 to 4,
Inclination characterized in that the step brake device is provided on the forward path side where passengers of the endless steps that circulate and move in the inclined part of the frame body are mounted, or on the return path side where passengers are not mounted, and the steps are directly braked. Type passenger conveyor. In the inclined type passenger conveyor according to any one of claims 1 to 5,
An inclined passenger conveyor comprising a plurality of the step brake devices.

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