JP2014111486A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device which performs proper control even when an object is caught between a handrail device and a ceiling plane of a hoistway or a device in the hoistway.SOLUTION: An elevator device includes a handrail fence 11, a detection device 6, and a control device 28. The handrail fence 11 is provided on a car 1. The handrail fence 11 is supported by a support part so that a detection part is disposed at a first height. The detection device 6 detects a situation that the detection part displaces relative to the support part and is disposed at a second height lower than the first height. When the detection device 6 detects the situation that the detection part is disposed at the second height, the control part 28 stops the car 1 and then moves down the car 1.

Description

  The present invention relates to an elevator apparatus having a handrail device on a car.

  Elevator maintenance personnel perform maintenance work on the car. For this reason, a handrail device is provided on the elevator car in order to ensure the safety of maintenance personnel.

Patent Documents 1 to 3 disclose an elevator apparatus including a handrail device on a car.
The elevator apparatus described in Patent Document 1 is configured such that a column portion of a handrail apparatus is vertically expanded and contracted. The handrail device is housed on the car in a state where the height is lowered.

  In the handrail device described in Patent Document 2, the handrail portion arranged at the uppermost portion is supported by a spring. The impact when the handrail collides with the obstacle is absorbed by this spring. In the elevator apparatus described in Patent Document 3, a member is extended upward from the uppermost handrail portion, and the approach of the ceiling surface is detected by this member.

JP 2000-143125 A Japanese Patent No. 4204844 JP 2008-230724 A

  In the elevator apparatus described in each patent document, for example, when an object or the like is sandwiched between the handrail device and the ceiling surface of the hoistway or equipment in the hoistway, an appropriate response can be taken. There wasn't.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide an elevator apparatus capable of performing appropriate control even when an object or the like is sandwiched between a handrail device and a ceiling surface of a hoistway or equipment in the hoistway. It is to be.

  The elevator apparatus according to the present invention is provided on the elevator car and supported by the support portion so that the detection portion is disposed at the first height, and the detection portion is displaced with respect to the support portion. A detecting device for detecting that the second height lower than the first height is detected, and when the detecting device detects that the detecting portion is arranged at the second height, after stopping the car And a control device for lowering the car.

  In the elevator apparatus according to the present invention, even when an object or the like is sandwiched between the handrail device and the ceiling surface of the hoistway or equipment in the hoistway, the jamming is eliminated. Appropriate control can be performed.

It is a perspective view which shows the principal part of the elevator apparatus in Embodiment 1 of this invention. It is sectional drawing which shows the principal part of a handrail fence. It is a figure for demonstrating the function of a detection apparatus. It is a figure for demonstrating the function of a detection apparatus. It is a perspective view which shows the principal part of the elevator apparatus in Embodiment 2 of this invention. It is sectional drawing which shows the principal part of a handrail fence. It is a figure for demonstrating the function of a detection apparatus.

  The present invention will be described in detail with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

Embodiment 1 FIG.
1 is a perspective view showing a main part of an elevator apparatus according to Embodiment 1 of the present invention.
The car device includes a car 1, a car door 2, a door driving device 3, a car frame 4, a handrail device 5, and a detection device 6.

  The car 1 is also called a car room and forms a space for passengers. The car door 2 opens and closes the doorway of the car 1. The entrance of the car 1 is arranged so as to face the entrance (not shown) of the elevator hall. The door driving device 3 drives the car door 2 to open and close the doorway of the car 1. The door driving device 3 is disposed above the entrance / exit of the car 1.

  The car 1 is supported by a car frame 4. The car frame 4 is disposed so as to surround the upper, lower, left and right sides of the car 1. For example, the car frame 4 includes a lower frame (not shown), a pair of vertical pillars 7, and an upper frame 8 having a square ring shape. The vertical columns 7 are arranged on both sides of the car 1. The lower frame is provided between the lower ends of the vertical columns 7 and supports the car 1 from below. The upper frame 8 is provided between the upper ends of the vertical columns 7 and is disposed horizontally above the car 1. The upper frame 8 is disposed along the edge of the upper surface of the car 1. Reference numeral 9 denotes a guide shoe supported by the vertical column 7. The car device ascends and descends the hoistway 10 when the guide shoe 9 is guided by a guide rail (not shown).

  The handrail device 5 is supported by the upper frame 8 of the car frame 4. The handrail device 5 is foldably provided above the car 1. When it is not necessary to use the handrail device 5, the handrail device 5 is held in a state of being folded above the car 1. The handrail device 5 is assembled when in use, and stands up above the car 1. In the assembled state, the handrail device 5 is disposed so as to surround three sides above the car 1 (right side, left side, and back side as viewed from the landing side). FIG. 1 shows a state in which the handrail device 5 is assembled.

  The handrail device 5 includes a handrail fence 11 disposed on the right side as viewed from the landing side, a handrail fence 12 disposed on the left side, and a handrail fence 13 disposed on the back side. The handrail fences 11 to 13 have substantially the same configuration and function. For this reason, only the structure of the handrail fence 11 is demonstrated concretely below. Detailed description of the handrail fences 12 and 13 will be omitted as appropriate.

  The handrail fence 11 is provided on the upper frame 8 via the support member 14. The handrail fence 11 is disposed along the right edge of the upper surface of the car 1 when viewed from the landing side. The support member 14 fixes the handrail fence 11 to the upper frame 8 so that the handrail fence 11 can be tilted toward the center of the car 1.

  The handrail fence 11 includes a lower handrail 15 and an upper handrail 16. In the present embodiment, the lower handrail 15 constitutes a support portion in the claims. Similarly, the upper handrail 16 constitutes a detection unit. The lower handrail 15 and the upper handrail 16 are formed by cutting and welding iron square pipes or round pipes, respectively.

  The lower handrail 15 includes three support columns 17 and an intermediate rail 18. A lower end portion of each column 17 is provided on the upper frame 8 via the support member 14. As for the support | pillar 17, the end surface arrange | positioned at an upper end in an assembly state opens. An intermediate rail 18 is provided on the three columns 17. The middle rail 18 is disposed horizontally at a certain height.

  The upper handrail 16 includes three short columns 19 and a handrail portion 20. The handrail portion 20 is horizontally disposed at the uppermost position in the handrail fence 11. That is, the middle rail 18 is disposed below the handrail portion 20. Three support columns 19 are provided so as to extend downward from the handrail portion 20. The column 19 has a cross section that is slightly smaller than the cross section of the column 17. The support column 19 is inserted into the support column 17 from above, and a lower end portion is disposed inside the support column 17. The support column 19 is arranged in a straight line with respect to the support column 17 so that it can be displaced along the axial direction of the support column 17. That is, the upper handrail 16 is supported by the lower handrail 15 so as to be movable in the vertical direction in the assembled state.

  FIG. 2 is a cross-sectional view showing a main part of the handrail fence 11. The lower handrail 15 includes a spring 21 (elastic body) inside the column 17. The spring 21 is provided between the support column 17 and the support column 19. The spring 21 presses the support column 19 upward so that the handrail portion 20 is disposed at a preset height (first height). That is, the handrail portion 20 is disposed at the first height in the assembled state.

  The detection device 6 is a device for detecting that an object or the like is sandwiched between the handrail device 5 and the ceiling surface of the hoistway 10 or the equipment in the hoistway 10. For example, when the car 1 is raised and an object or the like is sandwiched between the handrail fence 11 and the equipment in the hoistway 10, the upper handrail 16 is displaced so as to move downward with respect to the lower handrail 15. The detection device 6 detects that an object or the like is pinched by arranging the handrail portion 20 of the upper handrail 16 at the second height. The second height is a height lower than the first height by a predetermined distance.

The detection device 6 includes a sensor 22 and a control unit 23, for example.
The sensor 22 is fixed to the side surface of the column 17 of the lower handrail 15. A through hole is formed in the support column 17, and the detection piece 22 a of the sensor 22 passes through the through hole and protrudes into the support column 17. As shown in FIG. 2, when the handrail portion 20 is disposed at the first height, the detection piece 22 a is disposed below the lower end surface of the column 19. At this time, the detection piece 22a does not contact the support column 19.

  The control unit 23 is provided on the upper frame 8. The control unit 23 is connected to the sensor 22 by a wiring 24. When the handrail 20 is disposed at the first height, a signal is input from the sensor 22 to the controller 23 via the wiring 24. In FIG. 1, the case where the wiring 24 passes through the inside of the support column 17 and is then disposed along the upper frame 8 is shown as an example. That is, the wiring 24 is supported only by the handrail fence 11 and the upper frame 8. With such a configuration, the detection device 6 can be installed regardless of the arrangement of the devices 25 installed on the car 1.

  The handrail fence 12 is provided on the upper frame 8 via a support member 26. The handrail fence 12 is disposed along the left edge of the upper surface of the car 1 when viewed from the landing side. The support member 26 fixes the handrail fence 12 to the upper frame 8 so that the handrail fence 12 can be tilted toward the center of the car 1.

  The handrail fence 12 has the same configuration as the handrail fence 11. That is, the handrail fence 12 includes a lower handrail 15 and an upper handrail 16 as with the handrail fence 11. The lower handrail 15 includes three support columns 17 and an intermediate rail 18. Further, the lower handrail 15 includes a spring 21 (elastic body) inside the column 17. The upper handrail 16 includes three short columns 19 and a handrail portion 20.

  The sensor 22 is also fixed to the side surface of the column 17 of the handrail fence 12. As with the handrail fence 11, the main part of the handrail fence 12 is configured as shown in FIG. The sensor 22 is connected to the control unit 23 by a wiring 24. The sensor 22 outputs a signal to the control unit 23 when the handrail portion 20 of the handrail fence 12 is disposed at the first height.

  The handrail fence 13 is provided on the upper frame 8 via a support member 27. The handrail fence 13 is disposed along the edge on the back side of the upper surface of the car 1 when viewed from the landing side. The support member 27 fixes the handrail fence 13 to the upper frame 8 so that the handrail fence 13 can be tilted toward the center of the car 1.

  The handrail fence 13 has substantially the same configuration as the handrail fence 11. That is, the handrail fence 13 includes a lower handrail 15 and an upper handrail 16. The lower handrail 15 of the handrail fence 13 includes four support columns 17 and an intermediate rail 18. Two of the four columns 17 are provided so as to extend downward from the middle rail 18. The lower ends of the two columns 17 are provided on the upper frame 8 via the support member 27. The other two struts 17 are provided so as to extend upward from the end of the middle rail 18. The two struts 17 are open at the end surfaces arranged at the upper end in the assembled state.

  The upper handrail 16 includes two short columns 19 and a handrail portion 20. The two support columns 19 are provided so as to extend downward from the end portion of the handrail portion 20. The support column 19 is inserted into the upper support column 17 from above, and the lower end portion is disposed inside the support column 17.

  The lower handrail 15 includes a spring 21 (elastic body) inside the upper support column 17. The sensor 22 is fixed to the side surface of the upper support column 17. As with the handrail fence 11, the main part of the handrail fence 13 is configured as shown in FIG. The sensor 22 is connected to the control unit 23 by a wiring 24. The sensor 22 outputs a signal to the control unit 23 when the handrail portion 20 of the handrail fence 13 is disposed at the first height.

  3 and 4 are diagrams for explaining the function of the detection device 6. The handrail portion 20 shown in FIGS. 2 to 4 may be provided in any of the handrail fences 11 to 13.

  When the upper handrail 16 is displaced downward with respect to the lower handrail 15 and the handrail portion 20 is disposed at the second height as shown in FIG. 3, the detection piece 22 a is pushed by the lower end portion of the support column 19 and the sensor. 22 is pushed into the main body side. Thereby, the output of the signal from the sensor 22 is stopped. The control part 23 detects that the handrail part 20 was arrange | positioned in the 2nd height by the signal from the sensor 22 being no longer input. When the control unit 23 detects that the handrail unit 20 is disposed at the second height, the control unit 23 outputs a detection signal to the control device 28.

  The control device 28 is a device for controlling the car device. When the detection device 6 detects that the handrail portion 20 is disposed at the second height, the control device 28 performs control for eliminating pinching. For example, when receiving the detection signal from the control unit 23, the control device 28 first stops the car device suddenly. Thereafter, the control device 28 lowers the car device until no detection signal is input from the control unit 23. When the car apparatus starts to descend, the lower handrail 15 moves downward relative to the upper handrail 16. When the car device is lowered by a certain distance, the height of the handrail portion 20 becomes higher than the second height, and a signal is output from the sensor 22 again. As a result, the control unit 23 stops outputting the detection signal to the control device 28.

  If it is an elevator apparatus which has the said structure, even if a thing etc. are pinched | interposed between the handrail apparatus 5 and the ceiling surface of the hoistway 10, or the apparatus in the hoistway 10, the pinch will be eliminated. The car device can be controlled to do so.

  For example, during normal operation of the elevator, the handrail device 5 is held in a state of being folded above the car 1. When an elevator maintenance person performs maintenance on the car 1, the elevator maintenance staff assembles the handrail device 5 and stands in the state shown in FIG. 1. Next, the maintenance person turns on a maintenance switch (not shown) provided in the detection device 6. Thereby, the control part 23 and each sensor 22 will be in an energized state. If the detection piece 22a is not pushed down, a signal is output from each sensor 22.

  Further, when the maintenance switch is turned on, the control unit 23 outputs a signal (maintenance signal) indicating that maintenance work is being performed on the car 1 to the control device 28. When receiving the maintenance signal from the control unit 23, the control device 28 switches the operation mode from the normal mode to the maintenance mode. In maintenance mode, calls from the landing are not registered. When the maintenance mode is entered, the control device 28 controls the car device based on a signal from a predetermined portable operating device (not shown). The portable controller is provided on the car 1. For example, the portable controller is brought on the car 1 by a maintenance staff and connected to the car device.

  The elevator maintenance staff inspects the main rope and the equipment in the hoistway 10 while running the car device at a low speed. At this time, when an object or the like is sandwiched between the handrail device 5 and the ceiling surface of the hoistway 10 or equipment (including intermediate beams, counterweights, etc.) in the hoistway 10, the handrail portion 20 is brought to the second height. By the displacement, the control device 28 receives a detection signal from the control unit 23. Upon receiving the detection signal from the control unit 23, the control device 28 stops the car device suddenly, and then lowers the car device by a certain distance, for example, after 10 seconds, and stops it again.

  When the control device 28 stops the car device again, the control device 28 stops the elevator until a return signal is input. The return signal is input to the control device 28 when, for example, a reset button (not shown) provided in the detection device 6 is operated. If a return signal is not input even after a certain time (for example, several minutes) has elapsed since the elevator was stopped, the control device 28 determines that some abnormality or disaster has occurred, and an external monitoring device or maintenance company An alarm is issued.

  After issuing the alarm, the control device 28 keeps the car device stopped until a predetermined procedure (for example, a disaster rescue procedure) is performed from the outside. When the above procedure is performed from the outside, the car device can be moved up and down.

  Usually, when the portable operating device is operated to raise the car apparatus, it is necessary to keep pressing the button for raising provided in the portable operating device. In the elevator apparatus having the above configuration, the car apparatus is forced by placing the handrail portion 20 at the second height even when the lift button provided in the portable controller is kept pressed. Is stopped and then lowered. A state in which an object or the like continues to be sandwiched between the handrail devices 5 can be immediately resolved. Further, even when an object or the like is sandwiched between the handrail devices 5, the spring 21 serves as a buffer, and the impact at the time of collision can be reduced.

Embodiment 2. FIG.
FIG. 5 is a perspective view showing a main part of the elevator apparatus according to Embodiment 2 of the present invention.
In the car apparatus according to the present embodiment, the configurations of the handrail device 5 and the detection device 6 are partially different from the configurations disclosed in the first embodiment. Other configurations are the same as the configurations disclosed in the first embodiment.

  The handrail device 5 includes handrails 11 to 13. Each of the handrail fences 11 to 13 includes a middle rail 18 and a handrail portion 20. The middle rail 18 is disposed horizontally below the handrail portion 20. The middle rail 18 and the handrail portion 20 are integrally formed.

  FIG. 6 is a cross-sectional view showing a main part of the handrail fence 13. The rear handrail fence 13 includes a lower handrail 15 and an upper handrail 16. In the present embodiment, the lower handrail 15 constitutes a support portion in the claims. Similarly, the upper handrail 16 constitutes a detection unit. The middle rail 18 and the handrail portion 20 of the handrail fence 13 are provided on the lower handrail 15. The handrail portion 20 is horizontally disposed at the uppermost position in the lower handrail 15.

The upper handrail 16 includes a second handrail portion 29, two struts 30, and a spring 31 (elastic body).
The second handrail portion 29 is disposed horizontally above the handrail portion 20. The support column 30 is fixed to the upper portion of the lower handrail 15 and is disposed so as to extend upward from the handrail portion 20. The support column 30 is disposed so as to cover the side and upper side of the end portion of the second handrail portion 29 with the upper end portion thereof. The spring 31 is provided between the upper surface of the lower handrail 15 (specifically, the handrail portion 20) and the lower surface of the second handrail portion 29. The spring 31 presses the second handrail portion 29 upward so that the second handrail portion 29 is disposed at a preset height (first height).

The detection device 6 includes a sensor 32 and a control unit 23, for example.
The sensor 32 is fixed to the upper surface of each end portion of the second handrail portion 29. The upper part of the sensor 32 is covered with a support 30. The detection piece 32a of the sensor 32 is disposed so as to protrude upward, and faces the support column 30 from below.

  The sensor 32 is connected to the control unit 23 by the wiring 24. As shown in FIG. 6, when the second handrail portion 29 is disposed at the first height, the sensor 32 has a second end whose upper end of the detection piece 32 a contacts the support column 30 from below and is pressed by the spring 31. The detection piece 32 a is pushed into the main body side of the sensor 32 by the handrail portion 29. As a result, a signal is input from the sensor 32 to the control unit 23 via the wiring 24. In FIG. 5, a case where the wiring 24 passes through the inside of the handrail 13 and is then disposed along the upper frame 8 is shown as an example. That is, the wiring 24 is supported only by the handrail fence 13 and the upper frame 8. With such a configuration, the detection device 6 can be installed regardless of the arrangement of the devices 25 installed on the car 1.

FIG. 7 is a diagram for explaining the function of the detection device 6.
When the upper handrail 16 is displaced downward with respect to the lower handrail 15 and the second handrail portion 29 is disposed at the second height as shown in FIG. Placed in position. Thereby, the output of the signal from the sensor 32 is stopped. The control unit 23 detects that the second handrail unit 29 is disposed at the second height when the signal from the sensor 32 is not input. When the controller 23 detects that the second handrail 29 is disposed at the second height, the controller 23 outputs a detection signal to the controller 28. The operation after the control device 28 receives the detection signal is the same as the operation disclosed in the first embodiment.

  Even an elevator apparatus having the above-described configuration can achieve the effects disclosed in the first embodiment. Moreover, the elevator apparatus of the said structure can be easily implement | achieved by installing the upper handrail 16, the detection apparatus 6, etc. in the existing elevator apparatus.

  In the present embodiment, a case has been described in which the detection device 6 detects pinching by the rear handrail fence 13. If the handrail fences 11 and 12 are configured in the same manner as the handrail fence 13, the detection device 6 can detect the pinching by the handrail fence 11 or the handrail fence 12.

  1 car, 2 car door, 3 door drive device, 4 car frame, 5 handrail device, 6 detection device, 7 vertical column, 8 upper frame, 9 guide shoe, 10 hoistway, 11-13 handrail, 14 support member, DESCRIPTION OF SYMBOLS 15 Lower handrail, 16 Upper handrail, 17 support | pillar, 18 middle rail, 19 support | pillar, 20 handrail part, 21 spring, 22 sensor, 22a detection piece (back switch), 23 control part, 24 wiring, 25 apparatus, 26 support member , 27 support member, 28 control device, 29 second handrail portion, 30 strut, 31 spring, 32 sensor, 32a detection piece

Claims (5)

A handrail fence provided on the elevator car and supported by the support portion so that the detection portion is disposed at the first height;
A detection device for detecting that the detection unit is displaced with respect to the support unit and disposed at a second height lower than the first height;
A control device for lowering the car after stopping the car when the detection device detects that the detection unit is disposed at the second height;
Elevator device equipped with. The detector is
A handrail portion horizontally disposed above the handrail fence;
A first column provided with the handrail portion;
With
The support part is
A middle rail horizontally disposed below the handrail portion;
A second support post provided with the intermediate beam;
An elastic body provided between the second support column and the first support column and pressing the first support column upward so that the handrail portion is disposed at the first height;
The elevator apparatus according to claim 1, comprising: The support part is
A handrail portion arranged horizontally;
A middle rail horizontally disposed below the handrail portion;
With
The detector is
A second handrail portion disposed horizontally above the handrail portion;
An elastic body provided between the second handrail portion and the handrail portion and pressing the second handrail portion upward so that the second handrail portion is disposed at the first height;
The elevator apparatus according to claim 1, comprising: A car frame that supports the car and is arranged to surround the upper, lower, left, and right sides of the car;
With
The handrail fence is provided on an upper frame of the car frame disposed above the car,
The detection device includes:
A sensor provided on the handrail,
A control unit provided on the upper frame, to which a signal from the sensor is input via wiring;
With
The elevator apparatus according to any one of claims 1 to 3, wherein the wiring is supported only by the handrail and the car frame.   When the detection unit detects that the detection unit is disposed at the second height, the control unit lowers the car and then stops the elevator again until the return signal is input. The elevator apparatus according to any one of claims 1 to 4, wherein the elevator apparatus issues a warning when a return signal is not input even after a certain period of time has elapsed since the elevator is stopped.

Images