JPH0328062Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a step wheel abnormality detection device for a passenger conveyor.

[Prior art] Various safety switches are installed on passenger conveyors to protect the safety of users.These safety switches are connected in series with the electric control circuit of the drive motor, and which safety switch is activated. The operation of the passenger conveyor is now stopped immediately.

On the other hand, passenger conveyors are often installed in environments where customers are constantly in motion, so it is necessary to minimize operational stoppages.

For this reason, in recent years, automatic return type systems have been introduced that allow immediate resumption of operation by simply pressing the start switch (restart), once the cause of the stoppage has been removed, such as when riding incorrectly or when repair or replacement of parts is not required. There is a tendency to adopt

This automatic return type safety switch includes a switch that operates when a foreign object enters between the moving step and the skirt guard, and a switch that operates when a foreign object enters the handrail suction port, as shown in Figure 3-2. There are switches that operate when a foreign object enters the gap between the steps, causing the steps to rise, or when the steps move up and down due to the deformation of the step wheels, as shown in FIGS. 3 and 4.

[Problems to be solved by the invention] However, with the conventional device described above, if the wheel of the step breaks down, for example, if the rubber on the outer surface of the wheel peels off, a safety switch can be activated to stop the operation, but it does not cause wear and tear. Since the amount of peeling was not memorized, it was not possible to grasp the wear status of the wheels before failure occurred.

SUMMARY OF THE INVENTION An object of the present invention is to provide a step wheel abnormality detection device for a passenger conveyor that can accurately determine the wear status of step wheels before the step wheels break down.

[Means for Solving the Problems] The present invention is characterized by a contact placed near the bottom of the movement trajectory of the steps, and a structure that holds this contact at an arbitrary turning position and supports it so that it can turn. A step wheel abnormality detector having a support body is provided.

[Function] Because of the above configuration, if there is an abnormality in the step wheel, for example, if the rubber on the outer peripheral surface of the wheel deteriorates and peels off, or if it wears unevenly and changes its travel trajectory, the wheel or rear wheel will be affected by the rubber. The step moves on the rail while being lowered by the thickness of Since the contactor is rotated and this state is maintained, when investigating the cause of the failure at a later date, it is possible to know whether or not the contactor has rotated and the amount of the rotation.
By appropriately checking the turning position, that is, the turning amount of the contact, it becomes possible to grasp the wear status of the wheels before a failure occurs.

[Example] An example of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a schematic front view showing the relationship between a step, a wheel, a rail, and a step wheel failure detection device. The locus of movement is inclined at an angle of about 30° with respect to the horizontal plane. 6 is a front wheel rail, 7 is a rear wheel rail, 8 is a contactor 9,
The step wheel abnormality detection device is composed of a contact holding member 11 that rotatably supports the contact 9 on a support 10, and the contact 9 is attached at a position below the travel trajectory drawn by the step 1.

FIG. 2 is a plan view showing the step wheel abnormality detection device before and after operation.

Now, when the step wheels 4 and 5 are deformed, the movement trajectory drawn by the step 1 changes, and the contact 9 attached near the bottom of this trajectory moves from the solid line position to the dotted line position in Fig. 2. rotate. The reason why the contactor 9 rotates will be explained next.

Figure 2 2 is a view of Figure 2 1 from the left side.
1A shows the movement trajectory of the step 1 during normal times, and 1B shows the movement trajectory of the step 1 during abnormal conditions. When the movement trajectory is normal, the contact 9 is at the solid line position, and when the movement trajectory becomes abnormal. As the contactor 9 moves to the movement trajectory 1B, the contactor 9 is pushed, and its tip turns horizontally to reach the dotted line position. As a result, when investigating the cause of a failure at a later date, it is possible to know whether or not the contact has turned, and the amount of the turning, and by checking the turning position, that is, the amount of turning, of the contact, it is possible to check the wear status of the wheels. This makes it possible to understand before a failure occurs.

[Effects of the invention] As described above, according to the invention, when investigating the cause of a failure at a later date, it is possible to know whether or not the contact has pivoted and the amount of the pivot, and to determine the pivot position of the contact, that is, the amount of pivot as appropriate. By confirming this, it is possible to provide a step wheel abnormality detection device for a passenger conveyor that can accurately grasp the wear status of the wheels before a failure occurs.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing the relationship between steps, wheels, rails, and step wheel failure detection device;
2 is a plan view showing the step wheel failure detection device before and after operation, FIG. 2 is a side view showing the step wheel failure detection device before and after operation, and FIG.
Steps when the rear wheel is normal, Fig. 3 2 is the step when the rear wheel is up, Fig. 3 3 is the step when the rear wheel is sinking, Fig. 3 4
FIG. 2 is an explanatory diagram showing steps when the front wheels are sunken. 1...Step, 4...Rear wheel, 5...Front wheel, 6...
Front wheel rail, 7... Rear wheel rail, 8... Step wheel failure detection device, 9... Contact, 10... Support,
11...Contact holding member.

Claims (1)

[Scope of utility model registration request] In a step wheel abnormality detection device for a passenger conveyor in which a plurality of steps having front and rear wheels and connected in an endless manner move between entrances and exits along a rail via these wheels, the movement locus of the steps is detected. A passenger conveyor characterized by being provided with a step wheel failure detector having a contact placed near the bottom and a support body that holds the contact at an arbitrary turning position and supports the contact so as to be able to turn. Step wheel abnormality detection device.