JP5091394B2 - Passenger conveyor - Google Patents

Description

  The present invention relates to a passenger conveyor, and more particularly to a technique for reducing vibration and noise generated in a moving device that moves in synchronization with the rotation of a sprocket.

  When the treadle chain and the roller meshed with the sprocket teeth are rotated above the sprocket center line and above the sprocket center line and then pulled apart by the tension of the treadle chain, the rail that guides the roller In order to solve the problem of causing noise and vibration by collision, conventionally, the roller engaged with the sprocket is provided in the vicinity of a position where the roller should be separated from the sprocket, and the roller at the position is connected to the sprocket. There are some which are provided with a roller presser that is pulled away from the rail and guided to the rail. Accordingly, the roller is located on the upper side or the lower side of the sprocket and is surely separated from the sprocket to prevent noise and vibration (for example, see Patent Document 1).

Japanese Patent Application Laid-Open No. 2004-115211 (paragraph number, FIG. 1)

  In general, the diameter of a sprocket that drives a tread board chain in a passenger conveyor is set to about 650 mm and the number of teeth is set to about 30. In this case, the depth dimension of a machine room in which the sprocket is installed needs to be about 1000 mm. ing. With such a setting, the vertical fluctuation due to the collision phenomenon that occurs when the steel chain shaft of the treadle chain meshes with the sprocket is relatively small. If the moving speed is generally 30 m / min, noise and noise Vibration is acceptable.

  However, when the machine room, which has been recommended in recent years, is made thinner, the sprocket diameter must inevitably be reduced. In this case, the amount of vertical fluctuation that occurs when the treadle chain is engaged increases. . For example, as a conventional general numerical value, when the sprocket diameter is set to 654 mm and the number of teeth is 30, when the sprocket teeth are advanced halfway, the tread plate chain fluctuates up and down by about 1.8 mm. On the other hand, if the sprocket diameter is set to 393 mm and the number of teeth is 18 in order to shorten the depth dimension of the machine room, a vertical fluctuation of about 3 mm occurs. As described above, when the sprocket diameter is reduced, the amount of vertical fluctuation of the tread plate chain increases, and heavy equipment such as the tread shaft, the tread plate, and the shaft roller connected to the tread chain is shaken up and down. There was a problem of generating vibration and noise.

  In addition, the amendment to the Building Standards Act has made it possible to increase the moving speed to 50 m / min, compared to the previous 30 m / min. Therefore, the vertical fluctuation that occurs when the treadle chain meshes with the sprocket. Even if the amount is small, the impact force increases as the speed increases. Accordingly, when the above-described machine room is made thinner and the moving speed is increased, vibration and noise levels may become very high.

  Note that the above-described conventional one is intended to ensure that the treadle chain and the roller are on the upper side or the lower side of the sprocket and are surely separated from the sprocket, and is generated when the treadle chain meshes with the sprocket. It does not suppress vertical fluctuations that occur and the associated swinging of the equipment.

  The present invention has been made in accordance with the above-described prior art, and an object of the present invention is to provide a passenger conveyor that can suppress the swinging of the equipment due to the vertical fluctuation that occurs when the treadle chain meshes with the sprocket. It is in.

To achieve the above object, the present onset In the bright, a frame body which is supported by the building structure, a pair of left and right step chain of this is built into the frame body is connected endlessly rotated between multiple entrance A pair of sprockets provided at the entrance / exit for driving the treadle chain that is wound around, a treadle shaft that connects the left and right treadle chains at a predetermined interval and to which the treadle is attached, and the treadle shaft In a passenger conveyor that is rotatably provided on both sides, and includes a shaft roller that supports the tread plate and a load applied thereto, and a rail that guides the travel of the shaft roller, the shaft roller positioned below the sprocket Provided on the upper side through an elastic body so as to be movable, and provided with a shock absorbing movable guide that guides the trajectory of the tread plate shaft, the tread plate and the shaft roller, An end is pivotally supported on the frame body via a support pin, and the other end is extended along the track of the tread plate chain in a direction in which the shaft roller rotates from a horizontal track, A hook body that is provided in an intermediate portion of the guide body and engages with the frame body to support the guide body; and the frame body. And the elastic body interposed between the guide body and the guide body .

In thus constituted present onset bright, the shaft and the impact absorber movable guide provided so as to be movable in the upper roller positioned in the sprocket downward, the step board axis, the trajectory of the tread plate and the shaft roller the Guide while absorbing impact by elastic body. Accordingly, it is possible to prevent the tread plate shaft, the tread plate, and the shaft roller from swinging in conjunction with the vertical fluctuation that occurs when the tread chain is engaged with the sprocket. Further, when the shaft roller driven by the tread plate chain approaches the sprocket, the track of the shaft roller is guided with the upper side sandwiched between the guide body and the lower side sandwiched between the rails. In response to the further rotation of the sprocket, the shaft roller moves to a rotation track when it exceeds the center line of the sprocket. At this time, the guide body that is movably provided via the elastic body is the shaft roller. Is gradually shifted to the turning orbit. Accordingly, it is possible to stabilize the behavior of the shaft roller that moves to the turning track, the tread plate shaft that is connected to the shaft roller, and the tread plate.

Furthermore, in this onset bright, the hook body is characterized in that for engagement with the frame body via a possible bolt advance and retreat in the vertical direction.

In the configuration was the onset bright Thus, by performing the engagement with the frame of the hook body for supporting the guide member through the vertically retractable bolt, the height position of the guide body By adjusting, the guide body can be brought into sliding contact with the shaft roller at an appropriate position.

  The present invention reduces the vibration and noise level by suppressing the swinging of the equipment due to the vertical fluctuation that occurs when the treadle chain meshes with the sprocket, thereby reducing the machine room thickness and increasing the moving speed. It can be a passenger conveyor with performance.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a passenger conveyor according to the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing an embodiment of a passenger conveyor of the present invention, FIG. 2 is a schematic configuration diagram of the passenger conveyor, FIG. 3 is a perspective view showing the main configuration of the passenger conveyor, and FIG. 4 is a main configuration of the passenger conveyor. FIG. 5 is a schematic side view showing the turning state of the tread of the passenger conveyor, and FIG. 6 is an explanatory view for explaining the vertical fluctuation that occurs when the tread chain is engaged with the sprocket.

  As shown in FIGS. 2 to 4, the passenger conveyor of the present embodiment, for example, a moving sidewalk 1, is a frame 2 that is supported by a building structure, and a main sprocket that is pivotally supported at positions of entrances 18 a and 18 b of the frame 2. 3 and the sub sprocket 4, the pair of left and right step board chains 6 wound around the main sprocket 3 and the sub sprocket 4 and rotating the entrances 18a and 18b, and the left and right tread board chains 6 are connected at a predetermined interval and the tread board 5, a tread plate shaft 7 to which the tread plate shaft 7 is attached, a shaft roller 8 which is rotatably provided on both sides of the tread plate shaft 7 and supports the load applied thereto, and a rail 9 which guides the travel of the shaft roller 8. A driving machine 14 that drives the main sprocket 3 via a drive chain 15, a balustrade 16 that is erected on both sides of the tread 5, a handrail 17 that moves in synchronization with the tread 5, and the entrance 1 a, provided 18b, and a landing floor 18 for covering the upper portion of the frame 2. Further, as shown in FIG. 5, for example, the tread plate 5 and the shaft roller 8 move from the main sprocket 3 to the rail 9a, travel on the rail 9b, and then pass through the sub sprocket 4 and then move to the rail 9c to move to the rail 9d. It travels on the top, and after that, it continuously turns to pass through the main sprocket 3 and shift to the rail 9a again. As shown in FIG. 3, the tread plate chain 6 is provided with a steel chain shaft 6 a, and the chain shaft 6 a is driven by meshing with the teeth of the main sprocket 3 and the sub sprocket 4.

  As shown in FIG. 1, the moving sidewalk 1 of the present embodiment has a shock absorbing movable guide 20 that guides the trajectory of the tread plate shaft 7, the tread plate 5, and the shaft roller 8 on the upper side of the shaft roller 8 located below the sprocket 3. Is provided. The shock absorbing movable guide 20 is pivotally supported by the frame body 2 via a base 21 having a support pin 21a at one end, and is extended along the track of the tread plate chain 6 at the other end. A guide body 22 slidably contactable with the shaft roller 8 and a hook that is provided at an intermediate portion of the guide body 22 and engages the frame body 2 via a bolt 23 that can advance and retreat in the vertical direction to support the guide body 22. A body 24 and an elastic body 25 interposed between the frame body 2 and the guide body 22 are provided.

  One of the causes of the generation of vibration and noise on the moving sidewalk is vertical fluctuation that occurs when the chain shaft 6a of the treadle chain 6 is engaged with the sprocket 3. This movement is shown in FIG. 6 by simplifying the number of teeth of the sprocket 3 to six. When the sprocket 3 changes from the state shown in FIG. 6A to the state shown in FIG. 6B, that is, when the sprocket 3 rotates by a half pitch, a vertical fluctuation amount h is generated. As the sprocket 3 rotates, the fluctuation in the vertical direction is repeated.

  Therefore, in this embodiment, as shown in FIG. 1, when the shaft roller 8 driven by the tread plate chain 6 comes close to the main sprocket 3, the shaft roller 8 is sandwiched between the guide body 22 on the upper side and the rail 9 on the lower side. The trajectory is guided in the state. As the main sprocket 3 further rotates, the shaft roller 8 shifts from the horizontal track to the rotating track beyond the center line of the main sprocket 3. At this time, the shaft roller 8 can be moved via the elastic body 25. The provided guide body 22 is displaced from the position shown in A to the position shown in B when the elastic body 25 contracts in response to the upward force acting on the shaft roller 8 that has shifted to the turning track. Then, the shaft roller 8 is gradually shifted from the horizontal track to the rotating track. The height of the guide body 22 is adjusted by engaging the hook body 24 supporting the guide body 22 with the frame body 2 via a bolt 23 that can be moved back and forth in the vertical direction. Can be brought into sliding contact with the shaft roller 8 at an appropriate position.

  According to the present embodiment, the vertical fluctuation generated when the tread chain 6 meshes with the main sprocket 3 is prevented from affecting the tread plate shaft 7, the tread plate 5, and the shaft roller 8, and the transition from the horizontal track to the turning track is performed. By stabilizing the behavior of the shaft roller 8 and the tread plate shaft 7 and tread plate 5 connected thereto, the vibration and noise levels are reduced, the machine room is made thinner and the moving speed is increased. Passenger conveyor.

  In this embodiment, the shock absorbing movable guide 20 is provided on the main sprocket 3 side. However, the present invention is not limited to this, and the shock absorbing movable guide 20 can be applied to the sub sprocket 4 side. It is. Moreover, although the example which applied the shock absorption movable guide 20 to the walk sidewalk 1 was shown, it cannot be overemphasized that it is applicable also to an escalator.

It is a side view which shows one Embodiment of the passenger conveyor of this invention. It is a schematic block diagram of a passenger conveyor. It is a perspective view which shows the principal part structure of a passenger conveyor. It is a top view which shows the principal part structure of a passenger conveyor. It is a schematic side view which shows the rotation state of the tread board of a passenger conveyor. It is explanatory drawing explaining the vertical fluctuation which generate | occur | produces when a treadle chain meshes with a sprocket.

Explanation of symbols

1 Moving walkway (passenger conveyor)
2 Frame 3 Main sprocket 4 Sub sprocket 5 Tread plate 6 Tread plate chain 6a Chain shaft 7 Tread plate shaft 8 Axle roller 9 Rail 20 Shock absorbing movable guide 21a Support pin 21 Base 22 Guide body 23 Bolt 24 Hook body 25 Elastic body

Claims (2)

A frame supported by a building structure, a pair of left and right treadboard chains that are assembled into the frame and connected endlessly to rotate between a plurality of entrances and exits. A pair of sprockets that drive the tread chain, a tread shaft that connects the left and right tread chain chains at a predetermined interval, and a tread plate to which the tread is attached; In a passenger conveyor provided with a shaft roller that supports the load applied to it and a rail that guides the travel of this shaft roller,
The shock absorbing movable guide is provided on the upper side of the shaft roller located below the sprocket so as to be movable through an elastic body, and provided with a shock absorbing movable guide for guiding the tread plate shaft, the tread plate and the track of the shaft roller. One end of the shaft is pivotally supported on the frame body via a support pin, and the other end extends along the track of the tread plate chain in a direction in which the shaft roller rotates from a horizontal track. A guide body slidably contactable with the shaft roller , wherein the impact absorbing movable guide is provided at an intermediate portion of the guide body, and engages with the frame body to support the guide body; A passenger conveyor comprising the elastic body interposed between a frame body and the guide body . 2. The passenger conveyor according to claim 1 , wherein the hook body is engaged with the frame body via a bolt capable of moving back and forth in a vertical direction .

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