JP2009214957A - Safety confirming device of checking operation on elevator car - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure safety of an operator by securing a sure installation of a safety fence. <P>SOLUTION: An operator M gets on top of a car 1 after turning off a safety switch 11, and gets up and assembles a safety fence 2 which is folded inward. When the assembly is normally completed, a safety fence assembly completion detecting switch (not shown) mounted to engagement holding parts 3R1, 3L1 outputs assembly completion detecting signals. Then, when the safety switch 11 is turned on, an indication lamp 13 is turned on. Thereafter, when the operator M turns on a check operation mode selection switch 12, the operator can execute a checking operation of the car 1 with a mobile operating equipment 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator car inspection work safety confirmation device.

  In an elevator system, a hoisting machine moves up and down a car disposed in a hoistway, and is composed of many devices and members. Therefore, accurate inspection work must be performed regularly or irregularly. When carrying out the inspection work, an operator may get on the roof of the car and check various parts of the hoistway while traveling at a low speed. In that case, since the scaffolding on the car is bad, there is a risk that an accident or the like may occur to the worker when the car suddenly moves.

Therefore, in order to prevent such a danger, an apparatus has been proposed in which an operator is made to wear a safety belt and this safety belt is connected to a safety fence (for example, see Patent Document 1).
JP 2003-95554 A

  However, in the device according to Patent Document 1, since the safety fence is attached to only a part of the car, the worker neglects to wear the safety belt or forgets to connect the safety belt to the safety fence. You will not be able to avoid danger.

  Further, when the safety fence is not completely installed, the function of the safety belt cannot be fully exhibited.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an elevator car inspection work safety confirmation device capable of ensuring the safety of workers by ensuring the secure installation of a safety fence. .

  As a means for solving the above-mentioned problems, the present invention provides a safety fence assembled on the car by an operator who has entered the car, and a safety fence assembly completion for detecting that the assembly of the safety fence is completed in a normal state. A detection switch and an operation that is provided on the car and that is entered on the car is prohibited from moving when the car is not moved based on an operation other than its own, or a work start operation when starting inspection work. When a safety switch to perform and an operation start operation signal from the safety switch are input, and an assembly completion detection signal indicating that assembly is completed in a normal state is input from the safety fence assembly completion detection switch, inspection operation is performed. And inspection operation permission means for outputting a permission command.

  According to the present invention, it is possible to ensure the safety of workers by ensuring the secure installation of the safety fence.

  FIG. 1 is a perspective view showing an external appearance configuration of a car in a car according to an embodiment of the present invention. A safety fence 2 is assembled on the car 1. The safety fence 2 includes a right side fence member 3R, a left side fence member 3L, a front bar member 4, a rear bar member 5, and the like.

  The side fence members 3 </ b> R and 3 </ b> L are bent in a substantially U shape, and their base ends are attached to the car 1 via the rotation lock mechanism 6. A hinge portion 7 is provided on the front vertical portion of the side fence member 3R, and the base end portion of the front bar member 4 is attached to the hinge portion 7. The front bar member 4 can rotate about the hinge portion 7 in the horizontal direction indicated by the arrow Y1 and the vertical direction indicated by the arrow Y2. Further, an engagement holding portion 3L1 is formed in the front vertical portion of the side fence member 3L, and the front end portion of the front bar member 4 is engaged and held by the engagement holding portion 3L1.

  Similarly, the hinge part 7 is provided also in the other side perpendicular | vertical part of the side fence member 3L, The base end part of the back surface bar member 5 is attached to this hinge part 7. FIG. Similarly to the front bar member 4, the back bar member 5 can rotate in the horizontal direction and the vertical direction around the hinge portion 7. Further, an engagement holding portion 3R1 is formed in the vertical portion on the other side of the side fence member 3R, and the front end portion of the back bar member 5 is engaged and held by the engagement holding portion 3R1.

  An operator M holding the portable controller 8 is standing inside the safety fence 2 assembled as described above. Since the worker M is located inside the safety fence 2 surrounded by the four sides, safety is ensured.

  An in-car detection sensor 9 composed of, for example, a load sensor is embedded at a predetermined position below the roof surface of the car 1, and the worker M is placed on the car by the on-car detection sensor 9. It is now possible to detect boarding.

  In addition, an operation box 10 operated by the worker M is installed in the vicinity of the corner portion on the near side (the landing side) of the roof surface of the car 1. The operation box 10 is provided with a safety switch 11, an inspection operation mode selection switch 12, and an indicator lamp 13 (display means).

  FIG. 2 is an explanatory view showing a state where the safety fence 2 in FIG. 1 is folded. The front bar member 4 is rotated about the hinge portion 7 and is in a storage state parallel to the horizontal portion of the side fence member 3R. Similarly, the back bar member 5 is also rotated around the hinge portion 7 and is in a storage state parallel to the horizontal portion of the side fence member 3L. The side fence members 3 </ b> R and 3 </ b> L are folded inward with the front bar member 4 and the back bar member 5 stored in this manner, and are substantially horizontal with the roof surface of the car 1.

  During normal operation of the elevator, as shown in FIG. 2, the safety fence 2 is folded. A certain height restriction is provided on the car 1 so that it does not come into contact with the hoisting machine or the like at the upper part of the hoistway, but the safety fence 2 is assembled as shown in FIG. Then there is a risk of exceeding this height limit. However, if the safety fence 2 is folded as shown in FIG. 2, there is no risk of exceeding the height limit.

  1 and 2, the safety fence 2 is illustrated as being attached to the car 1 via the rotation lock mechanism 6, but this avoids complication of the drawings and facilitates understanding. Therefore, the mounting state is illustrated in a simplified manner. Actually, the rotation lock mechanism 6 is attached to an upper beam (not shown) disposed on the car via an attachment member.

  FIG. 3 is a block diagram showing main components of the car inspection work safety confirmation device according to the embodiment of the present invention. In addition to the safety switch 11, the inspection operation mode selection switch 12, and the indicator lamp 13 shown in FIGS. 1 and 2, the operation box 10 includes an inspection operation permission means 14, a selection operation restriction means 15, and an alarm output means 16. Is provided. The inspection operation permission means 14 outputs an inspection operation permission command to the elevator control device 17 when a predetermined condition is satisfied. Thereby, the worker M can run the car 1 at a low speed in the inspection operation mode using the portable controller 8.

  Each operation signal from the safety switch 11 and the inspection operation mode selection switch 12 and each detection signal from the car entry detection sensor 9 and the safety fence assembly completion detection switch 18 are input to the inspection operation permission means 14. It has become.

  The safety fence assembly completion detection switch 18 is a switch for detecting that the safety fence 2 has been assembled in a normal state. Although not shown in FIG. 1, the safety fence assembly completion detection switch 18 is attached to the engagement holding portions 3R1 and 3L1 of the side fence members 3R and 3L. Then, an assembly completion detection signal is output when the engagement and holding between the front bar member 4 and the back bar member 5 and the engagement holding portions 3L1 and 3R1 are reliably performed. This assembly completion detection signal is also output to the selection operation restricting means 15.

  The safety switch 11 is a movement prohibition operation when the worker M who has entered the car 1 on the car 1 prohibits the movement of the car 1 based on the operation of a person other than himself or when the self starts an inspection work. It is a switch for performing the operation start operation. The worker M turns off the safety switch 11 to prevent the car 1 from moving unexpectedly even if another worker performs an operation of moving the car 1 by mistake in the machine room or the like. Can be secured. The worker M only has to switch the safety switch 11 from OFF to ON when starting the inspection work.

  The inspection operation mode selection switch 12 is a switch that is operated when the worker M who has entered the car 1 on the car 1 selects the inspection operation mode and causes the car 1 to travel at a low speed. In the present invention, it is possible to adopt a configuration in which the inspection operation is permitted only by turning on the safety switch 11, but in this embodiment, there is a clear intention display of the worker M. Therefore, the inspection operation mode selection switch 12 is provided to improve the safety.

  Therefore, in the present embodiment, the inspection operation is not permitted unless the inspection operation mode selection switch 12 is switched on while the worker M has turned on the safety switch 11. However, in this embodiment, if the assembly of the safety fence 2 is not completed normally, the worker M cannot switch the inspection operation mode selection switch 12 from OFF to ON. That is, the selection operation restricting means 15 always restricts the inspection operation mode selection switch 12 from being turned on, and only when the assembly completion detection signal is input from the safety fence assembly completion detection switch 18 It is supposed to cancel.

  The indicator lamp 13 performs a lighting operation or a blinking operation based on a control signal from the inspection operation permission means 14. That is, when the car entry detection sensor 9 detects that the worker M has entered the car, but the assembly completion detection signal is not input from the safety fence assembly completion detection switch 18, the inspection operation permission means 14 displays. The lamp 13 is caused to blink so that the worker M is alerted. Then, when the worker M notices that the safety fence 2 is not assembled in the normal state by the blinking operation of the indicator lamp 13, and the assembly of the safety fence 2 is completed in the normal state, the inspection operation permission means 14 Since the assembly completion detection signal is input from the safety fence assembly completion detection switch 18, the indicator lamp 13 is switched from the blinking operation to the lighting operation. Thereby, the worker M can confirm that the safety fence 2 is assembled in a regular state.

  The alarm output means 16 causes the speaker M and the display (not shown) of the operation box 10 to output sound or display a message together with the blinking operation of the indicator lamp 13 so that the worker M can properly assemble the safety fence 2. It is intended to call attention to the fact that the status is not completed. Thereby, even when the worker M overlooks the blinking operation of the indicator lamp 13, it can be surely notified that the assembly of the safety fence 2 is not completed.

  The alarm output means 16 outputs an alarm to the worker M even when the inspection operation mode selection switch 12 does not turn on even after a predetermined time has elapsed since the indicator lamp 13 was lit. It has become. Thus, the worker M recognizes that it is necessary to turn on the inspection operation mode selection switch 12 and perform a clear intention display in order to cause the car 1 to perform the inspection operation.

  Next, the operation of the present embodiment configured as described above will be described with reference to the flowcharts of FIGS.

  FIG. 4 is a flowchart showing a main procedure to be performed by the worker M. Before the start of the inspection work, the safety fence 2 is folded inward as shown in FIG. The worker M first reaches for the operation box 10 from the landing side, switches the safety switch 11 from on to off, and then gets on the car (step 101).

  Next, the worker M assembles the safety fence 2 so as to be in the state shown in FIG. 1 (step 102). In other words, the side fence members 3R and 3L are initially pressed toward the roof surface side of the car 1 by the spring force of a spring member (not shown) provided in the rotation lock mechanism 6. . The worker M first grips the horizontal portions of the side fence members 3R and 3L, and spreads the side fence members 3R and 3L outward against the spring force of the rotation lock mechanism 6.

  As shown in FIG. 1, when the side fence members 3R and 3L are spread outward, the lock function of the rotation lock mechanism 6 is activated and the side fence members 3R and 3L are operated. This vertical state is maintained. That is, even if the worker M releases his / her hand from the horizontal part of the side fence members 3R and 3L, the vertical state of the side fence members 3R and 3L is stably maintained, and returns to the state where the side fence members 3R and 3L are folded inward again. There is no.

  After the side fence members 3R and 3L are erected in the vertical state, the worker M can store the front bar member 4 and the rear bar member that are in the storage state below the horizontal portion of the side fence members 3R and 3L. 5 is rotated by an appropriate angle in the horizontal and vertical directions around the hinge portion 7, and the respective tip portions are engaged and held by the engagement holding portions 3L1 and 3R1. Thereby, the assembly of the safety fence 2 is completed in a normal state, and the safety fence assembly completion detection switch 18 attached to the engagement holding portions 3L and 3R1 outputs an assembly completion detection signal.

  After completing the assembly of the safety fence 2 as described above, the worker M turns on the safety switch 11 (step 103). When the safety switch 11 is turned on, the indicator lamp 13 performs a lighting operation. Thereby, the worker M can confirm that the assembly of the safety fence 2 has been completed in a normal state. At this time, if the safety fence 2 is not assembled in a proper state, the indicator lamp 13 performs a blinking operation instead of a lighting operation, and an alarm output is performed by sound output of the speaker of the operation box 10 or display display. Is called.

  Next, the worker M turns on the inspection operation mode selection switch 12 (step 104). As a result, the inspection operation permission means 14 shown in FIG. 3 outputs an inspection operation permission command to the elevator control device 17, so that the inspection operation of the car 1 is possible. At this time, if the safety fence 2 is not assembled in a proper state, the selection operation restricting means 15 functions and the worker M cannot turn on the inspection operation mode selection switch 12. Therefore, even when the worker M overlooks the blinking operation of the indicator lamp 13, the inspection operation of the car 1 in the state where the assembly of the safety fence 2 is incomplete is reliably prevented.

  Thereafter, the worker M holds the portable controller 8 in his / her hand, performs an inspection operation, and performs an inspection operation while moving the car 1 at a low speed (step 105).

  When the worker M finishes the inspection work as described above, the worker M stops the car 1 at a predetermined floor. And each front-end | tip part of the front bar member 4 and the back bar member 5 engaged and held by the engagement holding parts 3L1 and 3R1 is removed, and these members are again below the horizontal portions of the side fence members 3R and 3L. Store on the side.

  Next, the worker M holds and lifts the horizontal portion of the side fence member 3R with both hands. Then, the lock function of the rotation lock mechanism 6 is released. In this state, the worker M rotates the side fence member 3 </ b> R toward the roof surface of the car 1. Similarly, the worker M also rotates the side fence member 3L toward the roof surface of the car 1. Thereby, as shown in FIG. 2, the safety fence 2 will return to the original state folded inside.

  Thereafter, the worker M turns off the inspection operation mode selection switch 12 and turns on the safety switch 11 to get off from the car 1 onto the landing and finishes the inspection work.

  FIG. 5 is a flowchart mainly showing the processing procedure of the inspection operation permission means 14 in FIG. The inspection operation permission means 14 determines whether or not the worker M has boarded the car based on the presence or absence of a detection signal input from the car boarding detection sensor 9 (step 1). If it is determined that the safety fence assembly is completed, it is determined whether or not the assembly of the safety fence 2 has been completed in a normal state based on whether or not a detection signal is input from the safety fence assembly completion detection switch 18 (step 2).

  When the worker M is on the car and the assembly of the safety fence 2 is not completed in a normal state (“NO” in Step 2), the inspection operation permission means 14 has the safety switch 11 turned on. If this is the case ("NO" in step 3), the warning message is output to the alarm output means 16 or the indicator lamp 13 is caused to blink to alert the worker M (step 4).

  On the other hand, when the assembly of the safety fence 2 has been completed in a normal state (“YES” in step 2), the inspection operation permitting means 14 is in a state where the safety switch 11 is on (“YES” in step 5). ), The indicator lamp 13 is turned on (step 6).

  Next, the inspection operation permission means 14 determines whether or not the inspection operation mode selection switch 12 is turned on (step 7). If it is not on (“NO” in step 7), the inspection operation permission means 14 is to perform the inspection operation by the alarm output means 16 after a predetermined time has elapsed (“YES” in step 8). The operator M is alerted that the inspection operation mode selection switch 12 is turned on and a clear intention display is required (step 9).

  However, the selection operation restricting means 15 is configured to restrict the ON operation of the inspection operation mode selection switch 12 by the worker M unless the assembly completion detection signal from the safety fence assembly completion detection switch 18 is input. Is as described above.

  On the other hand, if the inspection operation mode selection switch 12 is on (“YES” in step 7), the inspection operation permission means 14 outputs an inspection operation permission command to the elevator control device 17. Thereby, the worker M can run the car 1 at a low speed in the inspection operation mode using the portable controller 8.

  As described above, according to the present embodiment, if the safety fence 2 is not assembled in a regular state, low-speed traveling in the inspection operation mode of the car 1 is prohibited. It becomes possible to ensure the safety of M.

The perspective view which shows the external appearance structure on the cage | basket | car in the passenger car of embodiment of this invention. Explanatory drawing which shows the state by which the safety fence in FIG. 1 was folded. The block diagram which shows the main components of the inspection work safety confirmation apparatus based on embodiment of this invention. The flowchart which showed the main procedures which a worker should perform. The flowchart which mainly showed the process sequence of the inspection driving | operation permission means in FIG.

Explanation of symbols

1: Car 2: Safety fence 3R: Side fence member (right side)
3L: Side fence member (left side)
3R1, 3L1: Engagement holding part 4: Front bar member 5: Back bar member 6: Rotation lock mechanism 7: Hinge part 8: Portable controller 9: Car entry detection sensor 10: Operation box 11: Safety switch 12: Inspection mode selection switch 13: Indicator light (display means)
14: Inspection operation permission means 15: Selection operation restricting means 16: Alarm output means 17: Elevator control device 18: Safety fence assembly completion detection switch M: Worker

Claims (9)

A safety fence assembled on the car by workers who got on the car,
A safety fence assembly completion detection switch for detecting that the assembly of the safety fence is completed in a normal state;
A worker who is provided on the car and has entered the car performs a movement prohibiting operation when prohibiting movement of the car based on an operation other than his own, or a work starting operation when starting an inspection work. With safety switch,
When an operation start operation signal is input from the safety switch, an inspection operation permission command is output when an assembly completion detection signal indicating that assembly is completed in the normal state is input from the safety fence assembly completion detection switch. Inspection operation permission means to perform,
Elevator car inspection work safety confirmation device characterized by comprising: An onboard detection sensor for detecting that an operator has entered the car;
An alarm output means for outputting an alarm for an operator who has entered the car;
With
The inspection operation permission means receives the operation start operation signal from the safety switch and the boarding detection signal from the car onboard detection sensor, but the assembly from the safety fence assembly completion detection switch is performed. When the completion detection signal is not input, the alarm output means outputs an alarm.
The elevator car inspection work safety confirmation device according to claim 1. Provided with an inspection operation mode selection switch for performing an operation of selecting an inspection operation mode when an operator who has been on the car performs an inspection operation of the car, provided on the car;
The inspection operation permission means inputs a work start operation signal from the safety switch and an inspection operation mode selection operation signal from the inspection operation mode selection switch, and also detects the assembly completion from the safety fence assembly completion detection switch. When a signal is input, an inspection operation permission command is output.
The elevator car inspection work safety confirmation device according to claim 2. The inspection operation permission means inputs the work start operation signal from the safety switch and a boarding detection signal from the car onboard detection sensor, and further detects the assembly completion from the safety fence assembly completion detection switch. When the inspection operation mode selection operation signal is not input from the inspection operation mode selection switch despite the signal being input, the alarm output means outputs an alarm,
The elevator car inspection work safety confirmation device according to claim 3. In the case where the assembly completion detection signal is not input from the safety fence assembly completion detection switch, a selection operation restraining means for restraining the selection operation of the inspection operation mode selection switch is provided.
The elevator car inspection work safety confirmation device according to claim 3. Based on the assembly completion detection signal from the safety fence assembly completion detection switch, display means indicating that the safety fence has been assembled in a normal state is attached.
The elevator car inspection work safety confirmation device according to claim 1. The inspection operation permission command output by the inspection operation permission means permits an operator to perform a driving operation on the car using a portable controller.
The elevator car inspection work safety confirmation device according to claim 1. The safety fence is composed of a pair of side fence members that can be folded inward, and a front bar member and a rear bar member that have ends attached to the pair of side fence members. However, it is possible to raise the pair of side fence members in a folded state and to stand up and engage with the front bar member and the back bar member between the pair of side fence members. Is something,
The elevator car inspection work safety confirmation device according to claim 1. The safety fence assembly completion detection switch outputs the assembly completion detection signal to the inspection operation permission means by detecting the engagement between the pair of side fence members and the front bar member and the back bar member. To do,
The elevator car inspection work safety confirmation device according to claim 8.

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