JP5839700B2 - Escalator safety equipment - Google Patents

Description

  The present invention relates to an escalator safety device having a function of stopping operation when an escalator trouble occurs.

  In general, an escalator is a stepped staircase in a rosary shape with a certain distance from a chain wound endlessly around a terminal gear placed at the upper and lower positions in the machine room in which equipment is stored ( Step) is connected, and the opposing side walls of the frame constituting the main body outline of the escalator are connected by a cross beam as a reinforcing member. In the present specification, as in the following, the entire space provided surrounded by the frame that houses the terminal gear, the endlessly wound chain, and the return-side stair step. Is called the machine room.

  In such an escalator, for example, a maintenance inspector may remove a stair step for maintenance work and operate the escalator in that state. However, if the opening formed at the off-site enters the escalator's machine room, it will not be possible to know where the opening exists. It is expected that the maintenance inspector will fall. In particular, it is considered to be a great danger to fall into the machine room from the opening and be sandwiched between the step for operation and the cross beam. In addition, if the stair step is damaged or the maintenance inspector removes the stair step during maintenance work and then forgets to install it, leaving the opening part in general, etc. There is a risk that the user (passenger) will fall.

  Therefore, as a well-known technique for solving such a problem, there is an “escalator maintenance work safety device” (see Patent Document 1) that automatically notifies the operator (maintenance inspector) that the step opening has approached. It is done.

JP-A-10-129967

  The technique of Patent Document 1 described above detects the presence or absence of a stair step by a sensor provided in the machine room in the frame of the escalator, and issues a warning to the operator if there is no stair step based on the detection result. ing.

  However, according to the technique of Patent Document 1, even if it is possible to detect the state in which the stair step is dropped by having the function of detecting the presence / absence of the stair step, the drop-off point of the stair step passes through the sensor. Users and maintenance inspectors may fall into the opening that occurred at the location where the staircase step was dropped before, and in such a case, it could not contribute to the protection of the user or maintenance inspector who fell into the opening. There's a problem.

  The present invention has been made to solve such problems, and the technical problem thereof is that a user or a maintenance inspector falls down in an opening formed at a drop-off portion of a stair step of an escalator. However, it is providing the safety device for escalators which can protect a fallen person.

In order to solve the above technical problem, the basic configuration of the present invention has a fixed interval with respect to a chain wound endlessly on a terminal gear arranged at an upper position and a lower position in a machine room for storing equipment. with a made to have stair footstep is connected to the beaded has a connected structure in a plurality of cross beams are reinforcing members opposing side walls of the frame covering the machine room, the step for the device is the staircase A safety device for an escalator including a control panel for controlling the operation of the light projecting part attached to one of the upper part or the lower part of the plurality of cross beams by an attachment member, and the upper part or A light receiving unit that is attached to the other lower portion by a mounting member and that receives light projected by the light projecting unit, and a light shielding test that detects a light shielding state in the optical path related to light projection and reception by processing a light reception signal obtained from the light receiving unit. Comprising a part, the mounting member is disposed interposed between a base fixed to the crossbeam, and a pin fixed to the base, a lever rotatably supported on the pin, the lever and the base And a damper for restricting the rotational force in the rotation direction of the lever, and a weight coupled to the lower end in the vertical direction of the lever, and a light projecting unit or a light receiving unit is attached to the upper end in the vertical direction of the lever. The control panel stops the operation of the steps for steps when receiving the light shielding detection signal output when the light shielding state is detected from the light shielding detecting unit.

  According to the safety device for an escalator of the present invention, even if a situation occurs in which a user or a maintenance inspector falls in an opening generated in a stepped portion of a stairs for a escalator, the faller can be protected. .

It is the block diagram which showed the schematic structure of the escalator including the safety device for escalators which concerns on Example 1 of this invention partially partially seeing from the side surface direction. It is a broken sectional view of the escalator in the AA arrow direction (front direction) shown in FIG. FIG. 2 is an external view partially showing a light receiving portion and a mounting member as essential parts of an escalator safety device in a region B shown in FIG. 1 from a side surface direction. FIG. 2 is an external view partially showing a light projecting portion and a mounting member as essential parts of an escalator safety device in a region C shown in FIG. 1 from a side surface direction. It is the external view which expanded and showed the light-receiving part and attachment member shown in FIG. 3 partially transparently in the AA arrow direction shown in FIG. FIG. 1 is a usage pattern in the case where the weight is removed from the mounting member of the optical sensor of the escalator safety device included in FIG. 1, from the side direction of the escalator shown to explain the occurrence of a defect in the relative position of the optical sensor. It is the block diagram which extracted and showed the principal part of. FIG. 2 is a usage diagram of the safety device for an escalator included in FIG. 1, and is a block diagram showing an excerpt of the main part from the side surface direction of the escalator shown to explain good maintenance of the relative position of the optical sensor. .

  Hereinafter, the escalator safety device of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram illustrating a schematic structure of an escalator including a safety device for an escalator according to a first embodiment of the present invention, partially seen from a side surface direction. Moreover, FIG. 2 is a broken sectional view of the escalator in the AA arrow direction (front direction) in FIG. As shown in FIG. 1, the escalator according to the present embodiment has a constant interval with respect to a chain wound endlessly on a terminal gear arranged at an upper position and a lower position in a machine room in which equipment is stored. A staircase step (step) 1 is connected in a rosary shape, and the opposite side walls of the frame 3 that covers the machine room are connected by a plurality of cross beams 4 that are reinforcing members, and the equipment is a staircase. A control panel 2 for controlling the operation of the service step 1 is included.

  In addition, in this escalator, as a safety device for escalators, a light projecting portion 16 attached by a mounting member to a middle portion of the lower cross beam 4d of each cross beam 4 and an upper cross beam 4c of each cross beam 4 And a light receiving unit 15 that receives light projected by the light projecting unit 16 and a light receiving state obtained by processing the light reception signal obtained from the light receiving unit 15 (steps for steps) And a light-blocking detector 20 for detecting a situation in which a maintenance inspector or a user 5 has fallen into the opening 6 generated at the drop-off point 1, and the control panel 2 detects the light-blocking state from the light-blocking detector 20. When the light-shielding detection signal output when detected is received, the function of stopping the operation of the staircase step 1 is provided.

  Among these, the light projecting unit 16 and the light receiving unit 15 serving as optical sensors can receive the light projected from the light projecting unit 16 by the light receiving unit 15, and the optical axis in the optical path related to the light projecting / receiving is stably maintained. As shown in the figure, each of the attachment members is attached to the lower cross beam 4d and the upper cross beam 4c (the attachment relationship may be reversed), and together with the light-shielding detection function of the light-shielding detection unit 20, the light-shielding detection means is provided. . Furthermore, when the light blocking detection function of the light blocking detection unit 20 is combined with the operation stop function for the stair step 1 when the light blocking state of the control panel 2 is detected, an escalator stopping means is obtained.

  FIG. 3 is an external view partially showing the light receiving portion 15 and the mounting member, which are the main parts of the escalator safety device in the region B shown in FIG. FIG. 4 is an external view of the light projecting portion 16 and the mounting member, which are the main parts of the escalator safety device in the region C shown in FIG. Further, FIG. 5 is an external view showing the light receiving portion 15 and the mounting member shown in FIG. 3 in a partially transparent manner in the direction of arrows AA shown in FIG. Referring to each figure, the mounting members here are a base 10 fixed to a cross beam 4 (upper cross beam 4c or lower cross beam 4d), a pin 11 fixed to the base 10, and a pin 11 A lever 12 rotatably supported by the motor 12, a damper 13 disposed between the lever 12 and the base 10 and restricting the rotational force in the rotational direction of the lever 12 to be attenuated, and the lever 12 And a weight 14 coupled to the lower end in the vertical direction. Among these, the optical sensor (the light receiving unit 15 or the light projecting unit 16) is attached to the upper end of the lever 12 in the vertical direction.

  Referring to FIG. 1, according to the safety device for an escalator according to the first embodiment, the light projecting unit 16 serving as an optical sensor is projected from the light projecting unit 16 to the light receiving unit 15 in the machine room covered with the frame 3 under the step 1 for stairs. Under the condition that light is emitted (activation of the optical sensor is performed from the control panel 2), and the light quantity change in the light projection / reception of the light projecting unit 16 and the light receiving unit 15 is monitored by the light shielding detection unit 20, the user When the situation where 5 falls to the opening 6 generated at the drop-off position of the staircase step 1 is directly captured by an optical sensor (a change in the amount of light in the light projection and reception of the light projecting unit 16 and the light receiving unit 15), the light shielding detection unit 20 Has a function of automatically stopping the operation of the staircase step 1 by the control panel 2 that has received the detection result of the light shielding, so that even if the user 5 falls into the opening 6, a pre-leading accident will occur. Detecting properly and stopping operation It may be subjected to safety measures.

  Incidentally, the optical sensor mounting member in the safety device for escalators according to the first embodiment has been devised in terms of structure so that the optical axis in the optical path related to light projection and reception is stably maintained as described above. The following details this point.

  FIG. 6 is a usage pattern in the case where the weight 14 is removed from the mounting member for the optical sensor of the escalator safety device according to the first embodiment, and is shown to explain the occurrence of a defect in the relative position of the optical sensor. It is the block diagram which extracted and showed the principal part from the side surface direction of an escalator. Referring to FIG. 6, here, when the optical sensor (the light receiving portion 15 or the light projecting portion 16) is attached to the upper cross beam 4c and the lower cross beam 4d by a mounting member having a structure having no weight 14, that is, the upper horizontal beam. When fixedly installed on the girder 4c and the lower horizontal girder 4d, there are many users 5 on the staircase step 1 and the total weight of the staircase step 1 and the frame 3 installed on the building beam 30 are cut off by two points. When the upper cross beam 4c is deformed by sinking and deforming from the state shown by the line to the state shown by the solid line, the light receiving direction of the light receiving unit 15 is rotated. As a result, the upper cross beam 4c is rotated. The optical axis direction of the light receiving unit 15 attached to the light source is deviated downward in the vertical direction from the direction coinciding with the optical axis direction of the original light projecting unit 16, and the light projection from the light projecting unit 16 cannot be received well. The relative position of the optical sensor There is a possibility to cause a good occurrence). Conversely, when the lower cross beam 4d is deformed, the light projecting direction of the light projecting unit 16 is also rotated. As a result, the optical axis direction of the light projecting unit 16 attached to the lower cross beam 4d may be shifted downward. There is also a possibility that both of these occur at the same time. In such a situation, the light blocking detection function does not work normally due to the weight load of the user 5, and there is a risk of malfunction, which is not preferable in terms of functional configuration.

  FIG. 7 is a usage pattern of the safety device for an escalator according to the first embodiment, and shows an essential part from the side direction of the escalator shown in order to explain good maintenance of the relative position of the optical sensor. It is a block diagram. Referring to FIG. 7, here, the optical sensor (the light receiving unit 15 or the light projecting unit 16) is mounted on the upper cross beam 4c and the lower cross beam 4d by a mounting member having a structure with a weight 14, so that the stair step 1 There are many upper users 5 and the total weight of the stair step 1 and the frame 3 installed on the building beam 30 sinks from the state shown by the two-dot broken line into the state shown by the solid line, and is deformed. Accordingly, even when the upper cross beam 4c and the lower cross beam 4d are deformed, the lever 12 is rotated by the rotation depressing force of the weight 14 in the vertical direction, and the deformation of the upper cross beam 4c and the lower cross beam 4d is swallowed. The optical axis direction of the light receiving unit 15 attached to the upper cross beam 4c is maintained in a direction (constant angle) that coincides with the optical axis direction of the original light projecting unit 16, and light projection from the light projecting unit 16 is performed. A state in which light can be received well is shown. That is, according to the structure of the optical sensor mounting member of the safety device for escalators according to the first embodiment, the light-blocking detection function operates normally regardless of the weight load of the maintenance inspector or the user 5, and the risk of malfunction. Therefore, it can be said that it is preferable in terms of functional configuration.

  In addition, the escalator repeats the state shown by the two-dot broken line and the state shown by the solid line shown in FIG. 6 and FIG. 7 and vibrates, rotates the chain and terminal gear in the machine room, and operates the drive device. May generate vibration. Such vibration causes the lever 12 to swing and rotate about the pin 11 as an axis. Such a swing is controlled by the damper 13 that restricts the rotational force in the rotation direction of the lever 12 to be attenuated. While holding down, the weight 14 enables the light receiving portion 15 of the lever 12 and the light projecting portion 16 to rotate to coincide with the optical axis direction.

  In any case, according to the safety device for escalators according to the first embodiment, the light-shielding detection is accurately performed under the staircase step 1 without causing a malfunction regardless of the weight load of the maintenance inspector or the user 5. Even if a situation occurs where a maintenance inspector or user 5 falls in the opening 6 that occurs at the drop-off point of the stairs 1 for the escalator, the fallen person can be quickly detected and stopped to protect the fallen person. It is possible to provide a highly secure service that can be performed.

1 Steps for stairs
2 Control Panel 3 Frame 4 Horizontal Girder 5 User 6 Opening 10 Base 11 Pin 12 Lever 13 Damper 14 Weight 15 Light Receiving Part 16 Light Emitting Part 20 Light Shielding Part 30

Claims (1)

The staircase steps are connected in a rosary shape with a certain distance to the chain wound endlessly on the terminal gear deployed at the upper position and lower position in the machine room that stores the equipment, has a connected structure in a plurality of crossbeams opposing sidewalls is reinforcing member of the frame covering the machine room, a safety device for an escalator including a control panel to which the device controls the operation of the step for the stairs ,
A light projecting portion mounted by the upper or one to the mounting member of the lower of the plurality of cross beams, with attached by the mounting member upper or lower portion of the other of said plurality of cross beams, said light projecting A light receiving unit that receives the light projected by the light receiving unit, and a light blocking detection unit that processes a light reception signal obtained from the light receiving unit and detects a light blocking state in the optical path related to the light projecting and receiving,
The mounting member is disposed between a base fixed to the cross beam, a pin fixed to the base, a lever rotatably supported by the pin, and the lever and the base. And a damper for restricting the rotational force in the rotation direction of the lever, and a weight coupled to the lower end in the vertical direction of the lever,
The light projecting unit or the light receiving unit is attached to the upper end in the vertical direction of the lever,
The safety device for escalators, wherein the control panel stops the operation of the steps for the staircase when receiving a light shielding detection signal output when the light shielding state is detected from the light shielding detecting section.

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