WO2018078762A1

WO2018078762A1 - Elevator car upper handrail device

Info

Publication number: WO2018078762A1
Application number: PCT/JP2016/081874
Authority: WO
Inventors: 和也新道; 丸山　直之; 一宏久恵; 敬英石黒; 紘暢鎌田
Original assignee: 三菱電機株式会社
Priority date: 2016-10-27
Filing date: 2016-10-27
Publication date: 2018-05-03
Also published as: DE112016007387T5; CN109843774A; JPWO2018078762A1; CN109843774B; JP6584691B2

Abstract

In this elevator car upper handrail device, each of a plurality of handrails has a movable handrail member that is displaceable with respect to a car between a low handrail position and a high handrail position higher than the low handrail position. One of the handrails is a standard handrail. Two or more handrails are sequentially arranged so as to be adjacent to each other as engaging handrails from the standard handrail. Of movable handrail members of the engaging handrails adjacent to each other, one of the movable handrail members has fixed thereon a protrusion that is to be hooked onto the other movable handrail member.

Description

Elevator car handrail device

This invention relates to an elevator car handrail device provided at the top of a car.

Conventionally, an elevator in which a plurality of folding safety fences on a car is installed on the upper part of the car is known (for example, see Patent Document 1).

JP 2008-110863 A

However, in the conventional elevator shown in Patent Document 1, when a worker works on a car, a plurality of safety fences are individually assembled. There is a risk that the upper safety fence will remain unassembled.

This invention is made in order to solve the above problems, and obtains an elevator car handrail device that can more reliably prevent some handrails from being left unassembled. With the goal.

An elevator car handrail device according to the present invention includes a plurality of handrails arranged side by side on an upper portion of a car, and each of the plurality of handrails has a low handrail position and a high handrail position higher than the low handrail position. There is a movable handrail member that can be displaced between the cages, and any one of the plurality of handrails is a reference handrail, and two or more handrails are sequentially adjacent as engagement handrails from the reference handrail. In the state where the movable handrail member of the reference handrail is disposed at the high handrail position, the movable handrail member of the engaging handrail located next to the reference handrail is engaged with the movable handrail member of the reference handrail and adjacent to each other. Among the matching handrails, the movable handrail member of the engagement handrail on the side far from the reference handrail is engaged with the movable handrail member of the engagement handrail on the side close to the reference handrail, so that each movable handrail member of each engagement handrail becomes Keep in the high handrail position Are, among each of the movable handrail member engagement handrail adjacent to each other in the one of the movable handrail member, projections applied to other movable handrail member is fixed.

According to the elevator car handrail device according to the present invention, by holding the movable handrail member of the reference handrail at the high handrail position, all the handrails can be held at the high handrail position, and some handrails are assembled. It can prevent more reliably that it does not remain.

It is a top view which shows the elevator car by Embodiment 1 of this invention. It is a front view which shows the upper part of the cage | basket | car of FIG. It is a left view which shows the upper part of a cage | basket | car when seeing along the arrow III of FIG. It is a right view which shows the upper part of a cage when it sees along the arrow IV of FIG. It is a perspective view which shows the holding mechanism of FIG. It is a perspective view which shows the movable handrail member and protrusion in the VI section of FIG. It is an enlarged view which shows the maintenance operation switch in the VII part of FIG. It is an enlarged view which shows a normal driving | operation switch when the movable handrail member of the right handrail of FIG. 4 exists in a low handrail position. It is a top view which shows the cage | basket | car of the elevator by Embodiment 2 of this invention. It is a right view which shows the upper part of a cage | basket | car when seeing along the arrow X of FIG. FIG. 10 is a plan view showing the car when the state of the car handrail device in FIG. 9 is in the housed state. FIG. 10 is a cross-sectional view taken along line XII-XII in FIG. It is a perspective view which shows the movable handrail member and protrusion in the XIII part of FIG. FIG. 10 is an enlarged view showing the maintenance operation switch of FIG. 9. It is an enlarged view which shows the normal operation switch of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a plan view showing an elevator car according to Embodiment 1 of the present invention. FIG. 2 is a front view showing an upper portion of the car of FIG. 3 is a left side view showing the upper part of the car when viewed along arrow III in FIG. 1, and FIG. 4 is a right side view showing the upper part of the car when viewed along arrow IV in FIG. is there. In the figure, a car 1 is provided in the hoistway so as to be movable in the vertical direction. The car 1 moves up and down by the driving force of a driving device (not shown) installed in the hoistway.

The car 1 has a car body 2 having a bottom surface, an upper surface 2a, a front surface 2b, a back surface 2c, and a pair of side surfaces 2d. The front surface 2b and the back surface 2c of the car body 2 face each other in the depth direction of the car 1. The pair of side surfaces 2 d of the car body 2 oppose each other in the width direction of the car 1. A car entrance 3 that is opened and closed by a car door is provided on the front surface 2 b of the car body 2.

There are hall entrances (not shown) on each floor of the building. The hall on each floor and the inside of the hoistway communicate with each other through the hall entrances and exits. Each landing entrance is opened and closed by a landing door. In a state where the car 1 is stopped on the floor, the hall entrance and the car entrance 3 provided on the stop floor of the car 1 are opened at the same time, so that passengers can move between the hall and the car 1. .

The operation of the elevator is controlled by a control device (not shown) installed in the hoistway. Further, the operation of the elevator can be switched between a normal operation mode in which a normal service operation is performed and a maintenance operation mode in which the car 1 is moved at a lower speed than in the normal operation mode. At least one of the drive device and the control device is installed as an upper device in the hoistway at the upper part in the hoistway 1.

In an elevator, an operator may perform maintenance and inspection work on equipment in the hoistway while riding on the upper surface 2a of the car body 2. On the upper part of the car 1, a maintenance-on-car operating unit (not shown) is provided. In the maintenance operation mode, an operator who rides on the upper surface 2a of the car body 2 operates the on-car operation unit for maintenance in order to move the car 1 at a low speed. The operator gets into the upper surface 2a of the car body 2 from the landing through the landing doorway in a state where the height of the upper surface 2a of the car main body 2 is adjusted to the height position of the floor of the landing and the car 1 is stopped.

A car upper handrail device 4 is provided on the upper part of the car 1. The car upper handrail device 4 includes a left handrail 11, a rear handrail 12, and a right handrail 13 as a plurality of handrails. The left handrail 11, the back handrail 12, and the right handrail 13 are arranged on the upper portion of the car 1 in the order of the left handrail 11, the back handrail 12, and the right handrail 13. Further, the left handrail 11, the rear handrail 12, and the right handrail 13 are continuously arranged around the set work range set on the upper surface 2a of the car body 2 so as to surround the set work range. The left handrail 11 is disposed along one side surface 2d, and the right handrail 13 is disposed along the other side surface 2d. The back handrail 12 is disposed along the back surface 2c.

Each of the left handrail 11, the rear handrail 12, and the right handrail 13 (hereinafter referred to as "

handrails

11, 12, 13") is fixed to the upper surface 2a of the car body 2 in a state of protruding upward from the upper surface 2a of the car body 2. A fixed handrail member 21 and a movable handrail member 22 provided on the fixed handrail member 21.

The fixed handrail member 21 has a plurality of fixed vertical members arranged apart from each other in the horizontal direction. In this example, each fixed vertical member of the fixed handrail member 21 is a pipe along the vertical direction.

The movable handrail member 22 has a plurality of movable longitudinal members provided so as to be slidable on the respective fixed longitudinal members of the fixed handrail member 21, and a movable cross member fixed between the plurality of movable longitudinal members. In this example, the movable vertical member of the movable handrail member 22 is inserted into a pipe that is a fixed vertical member of the fixed handrail member 21. Accordingly, the movable handrail member 22 can be displaced in the vertical direction with respect to the upper portion of the car 1 and the fixed handrail member 21. In addition, the movable handrail member 22 moves relative to the car 1 and the fixed handrail member 21 between the low handrail position and the high handrail position higher than the low handrail position due to the vertical displacement with respect to the car 1 and the fixed handrail member 21. Displaced. The height of each of the

handrails

11, 12, and 13 is higher when the movable handrail member 22 is at the high handrail position than when the movable handrail member 22 is at the low handrail position.

The state of the car handrail device 4 is in the assembled state when the movable handrail members 22 of all the

handrails

11, 12, 13 are in the high handrail position, and the movable handrail members 22 of all the

handrails

11, 12, 13 are in the low handrail position. When it becomes, it will be in a stowed state. 1 to 4 show the car handrail device 4 in an assembled state.

The left handrail 11 is arranged on the upper surface 2a of the car body 2 as a reference handrail. As shown in FIG. 3, the left handrail 11 that is a reference handrail is provided with a holding mechanism 14 that holds the movable handrail member 22 of the left handrail 11 at a high handrail position.

Here, FIG. 5 is a perspective view showing the holding mechanism 14 of FIG. The holding mechanism 14 includes a holding bolt 15 that is a fastener provided on the fixed handrail member 21 of the left handrail 11. A plurality of positioning holes 16 are provided in the movable longitudinal member of the movable handrail member 22 of the left handrail 11. The plurality of positioning holes 16 are arranged at intervals in the vertical direction. The movable handrail member 22 of the left handrail 11 is held at a high handrail position by selectively inserting the holding bolts 15 into the plurality of positioning holes 16. Further, the movable handrail member 22 of the handrail 11 is displaced to the low handrail position by gravity when the holding bolt 15 is removed from the positioning hole 16.

From the left handrail 11 that is the reference handrail, the rear handrail 12 and the right handrail 13 are sequentially arranged adjacent to each other as the engaging handrail. In this example, the two

handrails

12 and 13 are sequentially adjacent to the left handrail 11, but three or more handrails may be sequentially adjacent to the left handrail 11.

Of the left handrail 11 that is a reference handrail and the rear handrail 12 that is an engagement handrail located next to the left handrail 11, one movable handrail member 22 has a plate-like protrusion that is applied to the other movable handrail member 22. The object 23 is fixed. In this example, the protrusion 23 that is applied to the movable handrail member 22 of the left handrail 11 is fixed to the movable handrail member 22 of the rear handrail 12. Moreover, in this example, the protrusion 23 protrudes above the left handrail 11 from the upper end portion of the movable handrail member 22 of the rear handrail 12. Accordingly, in this example, when the car upper handrail device 4 is viewed from above, a part of the protrusion 23 fixed to the rear handrail 12 overlaps with a part of the left handrail 11 as shown in FIG. Yes. In a state where the movable handrail member 22 of the left handrail 11 that is the reference handrail is held at the high handrail position, the movable handrail member 22 of the rear handrail 12 is hooked on the movable handrail member 22 of the left handrail 11 via the protrusion 23. Thus, the displacement of the movable handrail member 22 of the rear handrail 12 is prevented, and the movable handrail member 22 of the rear handrail 12 is held at the high handrail position.

Further, of the two rear handrails 12 and the right handrail 13 which are two engaging handrails adjacent to each other, a plate-like protrusion 24 that is hooked on the other movable handrail member 22 is fixed to one movable handrail member 22. . In this example, the protrusion 24 that is applied to the movable handrail member 22 of the rear handrail 12 is fixed to the movable handrail member 22 of the right handrail 13.

FIG. 6 is a perspective view showing the movable handrail member 22 and the protrusion 24 in the VI part of FIG. In this example, the protrusion 24 protrudes above the rear handrail 12 from the upper end portion of the movable handrail member 22 of the right handrail 13. Thus, in this example, when the car upper handrail device 4 is viewed from above, a part of the protrusion 24 fixed to the right handrail 13 overlaps a part of the rear handrail 12. In a state where the movable handrail member 22 of the rear handrail 12 is held at the high handrail position, the movable handrail member 22 of the right handrail 13 is hooked on the movable handrail member 22 of the rear handrail 12 via the protrusions 24, whereby the right handrail. The displacement of the 13 movable handrail members 22 is prevented, and the movable handrail member 22 of the right handrail 13 is held at the high handrail position.

That is, in a state where the movable handrail member 22 of the left handrail 11 that is the reference handrail is held at the high handrail position, the movable handrail member 22 of the rear handrail 12 located next to the left handrail 11 is the movable handrail member of the left handrail 11. The movable handrail member 22 of the right handrail 13 far from the left handrail 11 out of the rear handrail 12 and the right handrail 13 which are engaging handrails adjacent to each other is close to the left handrail 11. The movable handrail member 22 of each of the

handrails

12 and 13 is held at the high handrail position by being hooked on the movable handrail member 22 of the side rear handrail 12 via the projection 24.

Therefore, in the car handrail device 4, even if the respective movable handrail members 22 of the

respective handrails

11, 12, 13 are displaced, they do not interfere with each other. By being hooked on the member 22, the displacement of the other movable handrail member 22 with respect to one of the adjacent movable handrail members 22 is restricted.

In this example, the left handrail 11 is arranged as a reference handrail at one end portion of the handrail group constituted by the

handrails

11, 12, and 13, and the right handrail 13 is arranged as a terminal handrail at the other end portion of the handrail group. When the holding of the movable handrail member 22 of the left handrail 11 at the high handrail position is released, the holding of the respective movable handrail members 22 of the

handrails

12 and 13 is sequentially released from the handrail close to the left handrail 11 as the reference handrail. Is done.

The left handrail 11 that is a reference handrail is provided with a maintenance operation switch 25 that can detect that the movable handrail member 22 of the left handrail 11 has reached the high handrail position.

FIG. 7 is an enlarged view showing the maintenance operation switch 25 in the VII section of FIG. The maintenance operation switch 25 includes a key 26 that is a detected object and a switch body 27 that can detect the key 26. The key 26 is provided at the lower end of the movable vertical member of the movable handrail member 22 of the left handrail 11. The switch body 27 is provided at the upper end portion of the fixed vertical member of the fixed handrail member 21 of the left handrail 11.

A long hole 28 is provided in the fixed vertical member of the fixed handrail member 21 of the left handrail 11 along the vertical direction. The key 26 is passed through the elongated hole 28. In the left handrail 11, when the movable handrail member 22 is displaced between the high handrail position and the low handrail position, the key 26 moves in the vertical direction along the elongated hole 28 with respect to the fixed handrail member 21.

The switch body 27 has an insertion hole. When the movable handrail member 22 of the left handrail 11 reaches the high handrail position, the key 26 is inserted into the insertion hole of the switch body 27. When the key 26 is inserted into the insertion hole, the switch body 27 detects the key 26 and outputs a detection signal to the control device.

As shown in FIG. 4, the right handrail 13 that is the terminal handrail is provided with a normal operation switch 29 that detects that the movable handrail member 22 of the right handrail 13 has reached the low handrail position. The normal operation switch 29 includes a key 30 that is a detection target and a switch body 40 that can detect the key 30. The key 30 is provided at the upper end portion of the movable handrail member 22 of the right handrail 13. The switch body 40 is provided at the upper end portion of the fixed vertical member of the fixed handrail member 21 of the right handrail 13.

FIG. 8 is an enlarged view showing the normal operation switch 29 when the movable handrail member 22 of the right handrail 13 in FIG. 4 is in the low handrail position. The switch body 40 of the normal operation switch 29 has an insertion hole. When the movable handrail member 22 of the right handrail 13 reaches the low handrail position, the key 30 is inserted into the insertion hole of the switch body 40. When the key 30 is inserted into the insertion hole, the switch body 40 detects the key 30 and outputs a detection signal to the control device.

Information from each of the maintenance operation switch 25 and the normal operation switch 29 is sent to the control device. The control device controls the operation of the elevator based on information from each of the maintenance operation switch 25 and the normal operation switch 29. That is, when receiving the detection signal from the maintenance operation switch 25, the control device determines that the movable handrail member 22 of the left handrail 11 has reached the high handrail position, and sets the operation mode of the elevator to the maintenance operation mode. When the control device receives the detection signal from the normal operation switch 29, the control device determines that the movable handrail member 22 of the right handrail 13 has reached the low handrail position, and sets the operation mode of the elevator to the normal operation mode.

Next, the procedure for elevator maintenance and inspection will be described. The service operation of the elevator is performed in the normal operation mode. In the normal operation mode, the car upper handrail device 4 is in the housed state. At this time, the movable handrail members 22 of all the

handrails

11, 12 and 13 have reached the low handrail position, the output of the detection signal from the maintenance operation switch 25 is stopped, and the detection signal from the normal operation switch 29. Is sent to the controller.

When an operator performs maintenance inspection work on the upper surface 2a of the car body 2, the car is operated so that the upper surface 2a of the car body 2 matches the height of the floor of the landing, for example, by operating the operation panel at the hall on the top floor. Stop 1 and open the hall entrance on the top floor.

Thereafter, the worker rides on the upper surface 2a of the car body 2 and moves the movable handrail member 22 of each

handrail

11, 12, 13 from the low handrail position to the high handrail in the order of the right handrail 13, the rear handrail 12, and the left handrail 11. Lift to position sequentially. Thereby, the movable handrail members 22 of all the

handrails

11, 12, and 13 reach the high handrail position, and the state of the car upper handrail device 4 becomes the assembled state. When the movable handrail member 22 of the right handrail 13 is out of the low handrail position, the output of the detection signal from the normal operation switch 29 is stopped. At this time, in the car handrail device 4, the movable handrail members 22 adjacent to each other are sequentially hooked via the

protrusions

23 and 24, so that the operator raises the movable handrail member 22 of the left handrail 11 from the landing. The movable handrail members 22 of the rear handrail 12 and the right handrail 13 may be displaced to the high handrail position simultaneously with the movable handrail member 22 of the left handrail 11 by lifting to the handrail position.

Thereafter, the operator tightens the holding bolt 15 of the holding mechanism 14 and inserts the holding bolt 15 into the positioning hole 16 while keeping the position of the movable handrail member 22 of the left handrail 11 at the high handrail position. The movable handrail member 22 is held at the high handrail position. Thereby, the movable handrail members 22 of all the

handrails

11, 12, and 13 are held at the high handrail position, and the assembled state of the car upper handrail device 4 is maintained.

When the movable handrail member 22 of the left handrail 11 reaches the high handrail position, the key 26 is inserted into the insertion hole of the switch body 27 of the maintenance operation switch 25. As a result, the key 26 is detected by the switch body 27 and a detection signal is sent from the switch body 27 of the maintenance operation switch 25 to the control device. When the control device receives the detection signal from the maintenance operation switch 25, the operation mode of the elevator becomes the maintenance operation mode. As a result, the car 1 can be moved by operating the operation unit on the car during maintenance.

After this, the worker who rides on the upper surface 2a of the car body 2 closes the open hall entrance and then operates the car operating section for maintenance to move the car 1 at a low speed. Thereby, the maintenance inspection work with respect to the apparatus in a hoistway is attained.

When the maintenance and inspection work for the equipment in the hoistway is completed, the worker moves the car 1 downward at a low speed while operating the operation unit on the car for maintenance, and the upper surface 2a of the car body 2 is, for example, the top floor landing. Stop the car 1 to fit the floor height.

Thereafter, the operator opens the top floor hall entrance and exits from the upper surface 2a of the car body 2 to the hall, and then stores the state of the car upper handrail device 4 in the reverse procedure of assembling the car upper handrail device 4. Put it in a state. That is, the operator removes the holding bolt 15 from the positioning hole 16 to release the holding of the movable handrail member 22 of the left handrail 11 and displaces the movable handrail member 22 of the left handrail 11 from the high handrail position to the low handrail position. At this time, the movable handrail members 22 of the rear handrail 12 and the right handrail 13 are arranged in the order of the handrail closer to the left handrail 11 in the order of the handrail closer to the left handrail 11 in conjunction with the displacement of the left handrail 11 to the lower handrail position. To the low handrail position. Thereby, the state of the car upper handrail device 4 becomes the storage state.

When the movable handrail member 22 of the right handrail 13 reaches the low handrail position, the key 30 is inserted into the insertion hole of the switch body 40 of the normal operation switch 29. Thereby, the key 30 is detected by the switch body 40, and a detection signal is sent from the switch body 40 of the normal operation switch 29 to the control device. When the control device receives the detection signal from the normal operation switch 29, the operation mode of the elevator becomes the normal operation mode. As a result, normal service operation becomes possible, and the elevator maintenance and inspection work is completed.

In the elevator car handrail device 4 as described above, the movable handrail member 22 of the rear handrail 12 is hung on the movable handrail member 22 of the left handrail 11 via the protrusion 23, and the engaging handrails adjacent to each other are used. Of the rear handrail 12 and the right handrail 13, one of the movable handrail members 22 is provided with a protrusion 24 that is applied to the other movable handrail member 22, so that the movable handrail member 22 of the left handrail 11 that is the reference handrail is provided. By holding at the high handrail position, all the

handrails

11, 12, 13 can be held at the high handrail position, and it is possible to more reliably prevent some of the handrails from being assembled. Further, also when the state of the car upper handrail device 4 is set to the retracted state, all the

handrails

11, 12, The 13 movable handrail members 22 can be interlocked and displaced to the low handrail position. Thereby, it is possible to prevent a part of the handrail from being unstored.

Further, when the state of the car upper handrail device 4 is set to the assembled state, all the

handrails

11 and 12 are simply confirmed by checking whether or not the movable handrail member 22 of the left handrail 11 serving as the reference handrail has reached the high handrail position. , 13 can check whether or not the movable handrail member 22 has reached the high handrail position. Furthermore, when the state of the car upper handrail device 4 is set to the retracted state, all the

handrails

11 and 12 are checked only by checking whether or not the movable handrail member 22 of the right handrail 13 as the terminal handrail has reached the low handrail position. , 13 can check whether or not the movable handrail member 22 has reached the low handrail position. Thereby, it is possible to reduce the labor of the work when the state of the car upper handrail device 4 is set to the assembled state, and it is possible to reduce the labor of the work when the state of the car upper handrail device 4 is changed to the storage state. Can also be planned.

Further, since the state of the car upper handrail device 4 can be maintained in the assembled state only by holding the movable handrail member 22 of the left handrail 11 as the reference handrail at the high handrail position, all the

handrails

11, 12, 13 can be maintained. It is not necessary to provide the holding mechanism 14 individually. Thereby, the number of installation of the holding mechanism 14 can be reduced to one, and the cost can be reduced.

Further, each movable handrail member 22 of each

handrail

11, 12, 13 is displaced between the high handrail position and the low handrail position by being displaced in the vertical direction with respect to the upper portion of the car 1, and thus each handrail. Adjustment of the height dimensions of 11, 12, 13 can be facilitated with a simple configuration.

Further, since the left handrail 11 as the reference handrail is provided with a maintenance operation switch 25 for detecting that the movable handrail member 22 of the left handrail 11 has reached the high handrail position, the state of the car upper handrail device 4 is changed. The operation of the elevator can be controlled depending on whether or not the assembled state has been reached. As a result, it is possible to avoid the maintenance and inspection work being performed while the state of the car handrail device 4 is in an incomplete assembled state. Furthermore, since it is not necessary to provide the maintenance operation switch 25 individually for all the

handrails

11, 12, and 13, the number of the maintenance operation switches 25 can be reduced to one, and the cost can be reduced.

Further, the right handrail 13 which is the terminal handrail is provided with a normal operation switch 29 for detecting that the movable handrail member 22 of the right handrail 13 has reached the low handrail position, so that the state of the car upper handrail device 4 is changed. The operation of the elevator can be controlled depending on whether or not the storage state has been reached. Thereby, it is possible to avoid the normal operation of the elevator while the state of the car upper handrail device 4 is in an incomplete storage state. Furthermore, since it is not necessary to provide the normal operation switches 29 for all the

handrails

11, 12, and 13, the number of the normal operation switches 29 can be reduced to one, and the cost can be reduced.

In the above example, each

handrail

11, 12, 13 has a fixed handrail member 21 and a movable handrail member 22, and the movable handrail member 22 is slidable in the vertical direction with respect to the fixed handrail member 21. The movable handrail member 22 of the rear handrail 12 can be slid in the vertical direction along the rear surface 2c of the car body 2, and the movable handrail member 22 of the left handrail 11 and the right handrail 13 can be removed. The main body 2 may be slidable in the vertical direction along each side surface 2d.

Further, in the above example, the protrusion 23 that is applied to the movable handrail member 22 of the left handrail 11 is fixed to the movable handrail member 22 of the rear handrail 12, and the protrusion 24 that is applied to the movable handrail member 22 of the rear handrail 12 is the right handrail 13. Is fixed to the movable handrail member 22 of the left handrail 11, and the protrusion on the right handrail 13 is fixed to the movable handrail member 22. 24 may be fixed to the movable handrail member 22 of the rear handrail 12. In this case, the protrusion 23 protrudes from the movable handrail member 22 of the left handrail 11 to the lower side of the movable cross member of the movable handrail member 22 of the rear handrail 12, and the protrusion 24 extends from the movable handrail member 22 of the rear handrail 12 to the right handrail 13. It protrudes below the movable cross member of the movable handrail member 22.

Embodiment 2. FIG.
FIG. 9 is a plan view showing an elevator car according to Embodiment 2 of the present invention. FIG. 10 is a right side view showing the upper part of the car when viewed along the arrow X in FIG. Further, FIG. 11 is a plan view showing the car when the state of the car handrail device 4 of FIG. 9 is in the housed state. The car upper handrail device 4 provided on the upper portion of the car 1 includes a rear handrail 31, a first left handrail 32, a second left handrail 33, a first right handrail 34, and a second right handrail 35. It has as a handrail. The back handrail 31, the first left handrail 32, the second left handrail 33, the first right handrail 34, and the second right handrail 35 are continuously arranged around the set work range so as to surround the set work range. It is out. The first left handrail 32 and the second left handrail 33 are disposed along one side surface 2d, and the first right handrail 34 and the second right handrail 35 are disposed along the other side surface 2d. The back handrail 31 is disposed along the back surface 2c.

Each of the rear handrail 31, the first left handrail 32, the second left handrail 33, the first right handrail 34, and the second right handrail 35 (hereinafter referred to as “handrails 31 to 35”) A movable handrail member 22 is provided on the upper surface 2a.

The movable handrail member 22 has a plurality of movable vertical members arranged apart from each other in the horizontal direction and a movable cross member fixed between the plurality of movable vertical members. A plurality of fixtures 41 are provided on the upper surface 2 a of the car body 2. Each movable handrail member 22 is attached to the upper portion of the car 1 via a plurality of fixtures 41.

Each attachment 41 has a fixing member 42 fixed to the upper surface 2a of the car body 2 and an attachment shaft 43 provided horizontally on the fixing member 42. Each movable handrail member 22 is rotatable with respect to the upper portion of the car 1 around the mounting shaft 43.

Specifically, the movable handrail member 22 of the rear handrail 31 is rotatable about an attachment shaft 43 along the width direction of the car 1. Each of the movable handrail members 22 of the first left handrail 32, the second left handrail 33, the first right handrail 34, and the second right handrail 35 is centered on the mounting shaft 43 along the depth direction of the car 1. It can be turned.

Each movable handrail member 22 is displaced between a low handrail position and a high handrail position higher than the low handrail position by rotation with respect to the upper portion of the car 1. The movable handrail member 22 reaches the low handrail position by falling with respect to the upper part of the car 1 and reaches the high handrail position by standing with respect to the upper part of the car 1. The height of each of the handrails 31 to 35 is higher when the movable handrail member 22 is at the high handrail position than when the movable handrail member 22 is at the low handrail position.

The state of the car upper handrail device 4 is in the assembled state (FIGS. 9 and 10) when the movable handrail members 22 of all the handrails 31 to 35 are in the high handrail position, and the movable handrail members 22 of all the handrails 31 to 35 are in the assembled state. When in the low handrail position, the storage state (FIG. 11) is reached.

The rear handrail 31 is disposed on the upper surface 2a of the car body 2 as a reference handrail. A rear handrail 31 that is a reference handrail is provided with a holding mechanism 36 that holds the movable handrail member 22 of the rear handrail 31 at a high handrail position.

Here, FIG. 12 is a sectional view taken along line XII-XII in FIG. The fixing member 42 that attaches the movable handrail member 22 of the rear handrail 31 to the upper surface 2a of the car body 2 is provided with a long hole 45 along the vertical direction. The attachment shaft 43 of the rear handrail 31 is passed through the long hole 45 of the fixing member 42. As a result, the mounting shaft 43 of the rear handrail 31 can slide along the elongated hole 45 with respect to the fixing member 42. The movable handrail member 22 of the rear handrail 31 is displaced in the vertical direction with respect to the upper portion of the car 1 as the mounting shaft 43 slides along the elongated hole 45.

The holding mechanism 36 has a protrusion 37 fixed to the movable vertical member of the movable handrail member 22 of the rear handrail 31. The protrusion 37 is disposed above the attachment shaft 43 and parallel to the attachment shaft 43. At the upper end of the fixing member 42, a recess 38 into which the projection 37 is fitted is provided. The recess 38 is opened upward. In a state where the projection 37 is fitted in the recess 38, the movable handrail member 22 of the back handrail 31 is held in an upright state, and the movable handrail member 22 of the back handrail 31 is held at a high handrail position. When the protrusion 37 is removed from the recess 38, the movable handrail member 22 of the rear handrail 31 falls from the standing state to the inside of the car 1, and the movable handrail member 22 of the rear handrail 31 is displaced from the high handrail position to the low handrail position. The

As shown in FIG. 9, the first left handrail 32 and the second left handrail 33 are sequentially arranged adjacent to each other as an engagement handrail from one end portion of the back handrail 31 that is a reference handrail. From the end, a first right handrail 34 and a second right handrail 35 are sequentially arranged adjacent to each other as an engagement handrail. In this example, the two

handrails

32 and 33 are sequentially adjacent from one end of the handrail 31 and the two

handrails

34 and 35 are sequentially adjacent from the other end of the handrail 31, but three or more handrails are present. You may arrange | position adjacent to the back handrail 31 sequentially.

In a state where the movable handrail member 22 of the rear handrail 31 that is the reference handrail is held at the high handrail position, the first left handrail 32 and the first right handrail 34 that are engaging handrails located next to the rear handrail 31. When each of the movable handrail members 22 is engaged with the movable handrail member 22 of the rear handrail 31, the displacement of the respective movable handrail members 22 of the first left handrail 32 and the first right handrail 34 is prevented, and the movable handrail member 22 is held at the high handrail position.

Of the first left handrail 32 and the second left handrail 33 that are two engaging handrails adjacent to each other, one movable handrail member 22 has a plate-like protrusion 46 that is hooked on the other movable handrail member 22. It is fixed. In addition, of the first right handrail 34 and the second right handrail 35 which are two adjacent handrails to be adjacent to each other, one movable handrail member 22 has a plate-like protrusion on the other movable handrail member 22. 47 is fixed. In this example, the protrusion 46 that is applied to the movable handrail member 22 of the first left handrail 32 is fixed to the movable handrail member 22 of the second left handrail 33, and the protrusion that is applied to the movable handrail member 22 of the first right handrail 34. An object 47 is fixed to the movable handrail member 22 of the second right handrail 35.

FIG. 13 is a perspective view showing the movable handrail member 22 and the protrusion 47 in the portion XIII of FIG. In this example, the protrusion 47 protrudes from the upper end of the second right handrail 35 to the outside of the car 1 rather than the first right handrail 34. In a state where the movable handrail member 22 of the first right handrail 34 is held at the high handrail position, the movable handrail member 22 of the second right handrail 35 is moved through the protrusion 47 and the movable handrail of the first right handrail 34 is moved. By hanging on the member 22, the movable handrail member 22 of the second right handrail 35 is held at the high handrail position.

Similarly, in a state in which the movable handrail member 22 of the first left handrail 32 is held at the high handrail position, the movable handrail member 22 of the second left handrail 33 is connected to the first left handrail 32 via the protrusion 46. The movable handrail member 22 of the second left handrail 33 is held at the high handrail position.

That is, in a state where the movable handrail member 22 of the back handrail 31 that is the reference handrail is held at the high handrail position, the movable handrail member 22 of the first left handrail 32 that is located next to the back handrail 31 is The movable handrail member 22 of the second left handrail 33 on the side farther from the rear handrail 31 among the first left handrail 32 and the second left handrail 33 that are engaged with the movable handrail member 22 and adjacent to each other. Is hooked on the movable handrail member 22 of the first left handrail 32 on the side close to the rear handrail 31 via the projection 46, so that the respective movable handrail members 22 of the

handrails

32 and 33 are held at the high handrail position. . Further, in the state where the movable handrail member 22 of the rear handrail 31 is held at the high handrail position, the second right handrail on the side farther from the rear handrail 31 out of the first right handrail 34 and the second right handrail 35. When the movable handrail member 22 of 35 is hooked on the movable handrail member 22 of the first right handrail 34 on the side close to the rear handrail 31 via the protrusion 47, the movable handrail member 22 of each of the

handrails

34 and 35 becomes high. It is held at the handrail position.

In this example, the rear handrail 31 is arranged as a reference handrail in the middle part of the handrail group constituted by the handrails 31 to 35, and the second left handrail 33 and the second right handrail 35 are terminated at both ends of the handrail group. Each is arranged as a handrail. When the holding of the movable handrail member 22 at the high handrail position of the rear handrail 31 is released, the displacement of the movable handrail member 22 of each of the handrails 32 to 35 is sequentially prevented from the handrail closer to the rear handrail 31 as the reference handrail. Canceled.

A maintenance operation switch 51 that can detect that the movable handrail member 22 of the rear handrail 31 has reached the high handrail position is provided on the rear handrail 31 that is a reference handrail.

FIG. 14 is an enlarged view showing the maintenance operation switch 51 of FIG. The maintenance operation switch 51 is supported on the upper surface 2 a of the car body 2. The maintenance operation switch 51 includes a switch body 52 and an operation unit 53 provided on the switch body 52.

The operation unit 53 is displaceable between a forward position protruding from the switch body 52 and a backward position where the amount of protrusion from the switch body 52 is less than the forward position. The switch body 52 outputs a detection signal to the control device when the operation unit 53 reaches the retracted position. Output of the detection signal from the switch body 52 to the control device stops when the operation unit 53 returns from the retracted position to the advanced position.

When the movable handrail member 22 of the rear handrail 31 reaches the high handrail position, the operation unit 53 is pushed by the movable handrail member 22 of the rear handrail 31 and is displaced from the forward position to the backward position. Thereby, a detection signal is sent from the maintenance operation switch 51 to the control device. Further, when the movable handrail member 22 of the rear handrail 31 is displaced from the high handrail position to the low handrail position, the movable handrail member 22 of the rear handrail 31 is disengaged from the operation portion 53, and the operation portion 53 is moved from the retracted position to the forward position. Displaced. Thereby, transmission of the detection signal from the maintenance operation switch 51 to the control device is stopped.

The second left handrail 33 and the second right handrail 35, which are two terminal handrails, that the movable handrail member 22 of each of the second left handrail 33 and the second right handrail 35 has reached the low handrail position. A normal operation switch 54 is provided.

FIG. 15 is an enlarged view showing the normal operation switch 54 of FIG. The normal operation switch 54 includes a key 55 that is a detection target and a switch body 56 that can detect the key 55. Of the second left handrail 33 and the second right handrail 35, one movable handrail member 22 is provided with a key 55, and the other movable handrail member 22 is provided with a switch body 56. In this example, a key 55 is connected to the movable handrail member 22 of the second right handrail 35 via a wire 57, and the switch body 56 is fixed to the movable handrail member 22 of the second left handrail 33. The length of the wire 57 is such that the key 55 reaches the switch body 56 when the movable handrail member 22 of each of the second left handrail 33 and the second right handrail 35 is in the low handrail position. Yes.

The switch body 56 is provided with an insertion hole. When the key 55 is inserted into the insertion hole, the switch body 56 detects the key 55 and outputs a detection signal to the control device.

Information from each of the maintenance operation switch 51 and the normal operation switch 54 is sent to the control device. The control device controls the operation of the elevator based on information from each of the maintenance operation switch 51 and the normal operation switch 54. The control by the control device is the same as in the first embodiment.

Next, the procedure for elevator maintenance and inspection will be described. First, after the operator gets on the upper surface 2a of the car body 2 in the same manner as in the first embodiment, the operator moves the movable handrail member 22 from the low handrail position in the order of the second left handrail 33 and the first left handrail 32. The movable handrail member 22 is sequentially lifted from the low handrail position to the high handrail position sequentially in the order of the second right handrail 35 and the first right handrail 34. Thereafter, the movable handrail member 22 of the rear handrail 31 serving as the reference handrail is lifted from the low handrail position to the high handrail position. Thereby, the movable handrail members 22 of all the handrails 31 to 35 reach the high handrail position, and the state of the car upper handrail device 4 becomes the assembled state.

Thereafter, the operator fits the protrusion 37 of the holding mechanism 36 into the recess 38 of the fixing member 42 in the rear handrail 31. Thereby, the movable handrail member 22 of the rear handrail 31 is held at the high handrail position, and the state of the car handrail device 4 is maintained in the assembled state.

When the movable handrail member 22 of the rear handrail 31 reaches the high handrail position, the operation unit 53 of the maintenance operation switch 51 is pushed by the movable handrail member 22 of the rear handrail 31, and a detection signal is sent from the maintenance operation switch 51 to the control device. It is done. When the control device receives the detection signal from the maintenance operation switch 51, the operation mode of the elevator becomes the maintenance operation mode. As a result, the car 1 can be moved by operating the operation unit on the car during maintenance.

Thereafter, in the same manner as in the first embodiment, the maintenance and inspection work for the equipment in the hoistway is completed, the car 1 is moved at a low speed, and the upper surface 2a of the car body 2 is, for example, at the height of the floor of the top floor landing. Stop the car 1 to fit. Thereafter, the operator releases the protrusion 37 of the holding mechanism 36 from the recess 38 to release the holding of the movable handrail member 22 of the rear handrail 31 at the high handrail position, and raises the movable handrail member 22 of the rear handrail 31. Displace from the handrail position to the low handrail position. At this time, each of the movable handrail members 22 of the first left handrail 32, the second left handrail 33, the first right handrail 34, and the second right handrail 35 is the low handrail of the movable handrail member 22 of the rear handrail 31. In conjunction with the displacement to the position, the handrails are sequentially displaced from the high handrail position to the low handrail position in the order of the handrail near the rear handrail 31. Thereby, the state of the car upper handrail device 4 becomes the storage state.

After this, the operator moves to the landing through the landing entrance, and then inserts the key 55 of the normal operation switch 54 into the insertion hole of the switch body 56. Thereby, the key 55 is detected by the switch body 56, and a detection signal is sent from the normal operation switch 54 to the control device. When the control device receives the detection signal from the normal operation switch 54, the operation mode of the elevator becomes the normal operation mode. As a result, normal service operation becomes possible, and the elevator maintenance and inspection work is completed.

Thus, even if each movable handrail member 22 of each handrail 31 to 35 is rotated with respect to the upper portion of the car 1, the height dimension of each handrail 31 to 35 can be easily adjusted with a simple configuration. Can be. Further, by allowing the movable handrail members 22 adjacent to each other to be hooked via the

protrusions

46 and 47, all the handrails 31 to 35 can be held at the high handrail position, and some handrails are assembled. It can prevent more reliably that it does not remain. Further, also when the state of the car upper handrail device 4 is changed to the retracted state, the holding of the movable handrail member 22 of the rear handrail 31 serving as the reference handrail at the high handrail position is released, so that all the handrails 31 to 35 are released. The movable handrail member 22 can be interlocked and displaced to the low handrail position, and it is possible to prevent a part of the handrail from being unstored.

In the above example, the key 55 of the normal operation switch 54 is connected to the movable handrail member 22 via the wire 57, but the second left handrail when the state of the car upper handrail device 4 is the storage state. When the gap between the movable handrail members 22 of the 33 and the second right handrail 35 is narrow, the key 55 may be directly fixed to the movable handrail member 22. In this case, when the movable handrail member 22 of each of the second left handrail 33 and the second right handrail 35 is displaced to the low handrail position, the key 55 is automatically inserted into the insertion hole of the switch body 56.

Further, in the above example, the protrusion 46 that is applied to the movable handrail member 22 of the first left handrail 32 is fixed to the movable handrail member 22 of the second left handrail 33, and the movable handrail member 22 of the first right handrail 34. The protrusion 47 hanging on the movable handrail member 22 of the second right handrail 35 is fixed to the movable handrail member 22 of the second left handrail 33. The protrusion 47 that is fixed to the member 22 and is applied to the movable handrail member 22 of the second right handrail 35 may be fixed to the movable handrail member 22 of the first right handrail 34. In this case, the protrusion 46 protrudes from the movable handrail member 22 of the second left handrail 33 to the inside of the car 1 rather than the first left handrail 32, and the first right side from the movable handrail member 22 of the second right handrail 35. A protrusion 47 protrudes inside the car 1 from the handrail 34.

Claims

It has a plurality of handrails arranged side by side at the top of the cage,
Each of the plurality of handrails has a movable handrail member displaceable with respect to the car between a low handrail position and a high handrail position higher than the low handrail position,
One of the plurality of handrails is a reference handrail,
From the reference handrail, two or more handrails are sequentially arranged adjacent to each other as an engaging handrail,
In a state where the movable handrail member of the reference handrail is held at the high handrail position, the movable handrail member of the engaging handrail located next to the reference handrail is engaged with the movable handrail member of the reference handrail. Each of the engaging handrails adjacent to each other, the movable handrail member of the engaging handrail on the side far from the reference handrail is hooked on the movable handrail member of the engaging handrail on the side close to the reference handrail, The movable handrail member of each of the engaging handrails is held at the high handrail position;
An elevator car handrail device in which one of the movable handrail members among the movable handrail members of the engaging handrails adjacent to each other is fixed with a protrusion on the other movable handrail member.
The elevator car according to claim 1, wherein the movable handrail member of each of the plurality of handrails is displaced between the high handrail position and the low handrail position by rotating with respect to an upper portion of the car. Upper handrail device.
2. The elevator according to claim 1, wherein the movable handrail member of each of the plurality of handrails is displaced between the high handrail position and the low handrail position by being displaced vertically with respect to an upper portion of the car. Handrail device on the basket.
The maintenance operation switch according to any one of claims 1 to 3, wherein the reference handrail is provided with a maintenance operation switch capable of detecting that the movable handrail member of the reference handrail has reached the high handrail position. Elevator car handrail device.
The engaging handrail located at the end of the handrail group constituted by the plurality of handrails is a terminal handrail,
The normal terminal switch according to any one of claims 1 to 4, wherein the terminal handrail is provided with a normal operation switch capable of detecting that the movable handrail member of the terminal handrail has reached the low handrail position. Elevator car handrail device.