JPH08319070A - Elevator equipped with service platform for maintenance and inspection - Google Patents

Abstract

PURPOSE: To facilitate the maintenance and inspection of an elevator by one operator. CONSTITUTION: A service platform 20 for the maintenance and inspection of an elevator is hanged down from the bottom surface of an elevator cage 2 so am to be set. Moreover, the service platform 20 is provided with a scaffolding board 1 parallel to the bottom surface of the elevator cage 2, and the scaffolding board 1 is moved so as to be vertically and firmly fixed to the front lower portion of the elevator cage 2 when the service platform is out of operation. Furthermore, the service platform 20 includes a link mechanism for moving the scaffolding board 1. Furthermore, an elevator control board is provided for a position capable of operating the control board over the service platform 20. Moreover, a driving operation device provided with a driving operation switch for the elevator control board is connected to a connector provided for the bottom surface of the elevator cage 2 and the like only when maintenance and inspection are performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator having a maintenance and inspection workbench.

[0002]

2. Description of the Related Art FIGS. 9 to 12 are views showing a schematic structure of a part of a conventional elevator and a state of inspection work of the elevator. As shown in FIG. 9, in the elevator, the elevator car 2 moves up and down in the elevator hoistway S. At the bottom of the hoistway S is a pit P for maintenance and inspection work. An elevator door 3 is provided at the lowest floor hall 4 and the intermediate floor hall 5, and the elevator door 3 is supported by a hanger rail (not shown) in the hanger case 3a.

Further, as shown in FIG. 9, an elevator car door 2a is provided on the front surface of the elevator car 2.
Further, a guard plate 13 is vertically attached to the lower front portion of the elevator car 2. This guard plate 13 prevents an opening leading from the landing 4 or 5 to the hoistway S when the elevator car 2 is stopped at a position other than the predetermined hoisting position, so that the hoistway S for people, objects, etc. To prevent the elevator from falling and ensure the safety of the elevator.

As shown in FIG. 12, a lower end point switch D is provided on the lower wall surface of the hoistway S. So if the elevator goes too far without stopping at the bottom floor,
The lower end point switch D is turned on by the elevator car 2 so that the elevator can be brought to an emergency stop.

In the elevator having the above structure, maintenance and inspection work is regularly performed for the purpose of ensuring safety. The maintenance and inspection work of the bottom of the elevator car, the inside of the hanger case on the bottom floor, and the lower end point switch will be described below.

FIG. 9 is a diagram showing the maintenance and inspection work of the bottom of the elevator car. As shown in the figure, elevator car 2
The maintenance and inspection work on the bottom surface is performed by two workers H1 and H2. The worker H2 operates the elevator operation control panel (not shown) in the elevator car 2 to move the elevator car 2
Is moved up and down and stopped at a position where the worker H1 can easily work. The worker H1 is located in the pit P and performs maintenance work on the bottom surface of the elevator car 2 on the stepladder G.

Next, FIG. 10 shows the hanger case 3 on the bottom floor.
It is a figure which shows the maintenance inspection work in a. In this case also, the work is performed by the two workers H1 and H2. As shown in the figure, first, the elevator car 2 is located on an arbitrary intermediate floor. Then, one worker H1 performs maintenance and inspection work on the stepladder G leaning against the wall surface of the hoistway S from the pit P, and the other worker H2 supports the stepladder G at the pit P. Here, as shown in FIG. 11, the hanger case 3a has a length from the landing portion to the door pocket portion,
The total length is too long for the worker H1 to work on the stepladder at once. Therefore, in order to perform maintenance and inspection work over the entire length of the hanger case, it is necessary to move the stepladder in parallel at least once.

FIG. 11 is a diagram showing a case where the maintenance and inspection work in the hanger case 3a on the bottom floor is performed by one operator. As shown in the figure, the worker H1 is located in the elevator car 2 and performs maintenance and inspection work. Here, the work on the right half of the hanger case in the figure is carried out by placing a hand in the gap between the hanger case 3a and the elevator car door 2a.

Further, FIG. 12 is a diagram showing maintenance and inspection work of the lower end point switch D. As shown in the figure, the lower end point switch is usually located at a height that is out of reach of an operator standing up in the pit. Therefore, as shown in the figure, maintenance and inspection work is performed on the stepladder G.

The above is the maintenance and inspection work of the bottom surface of the elevator car of the conventional elevator, the inside of the hanger case on the bottom floor, and the lower end point switch. As mentioned above, in the conventional work, a stepladder is used for the work, and mainly,
The work is being performed by two workers.

[0011]

The maintenance and inspection work of the bottom surface of the elevator car, the inside of the hanger case on the bottom floor, and the lower end point switch of the above elevator has the following problems.

One is that one must use a stepladder to work in an unstable condition.

Next, a plurality of workers are required because a worker is required to perform an auxiliary work such as moving the elevator car up and down and supporting a stepladder. Note that maintenance work inside the hanger case on the bottom floor can be done by one person as shown in Fig. 11, but it is difficult to work because it is necessary to put a hand into the narrow gap and groping as described above. There is a problem.

An object of the present invention is to solve the above problems and to provide an elevator which allows a worker to easily perform maintenance work on the elevator.

Further, it is an object of the present invention to provide an elevator which addresses the above-mentioned problems and allows one worker to perform the above-mentioned maintenance and inspection work.

Further, it is an object of the present invention to provide an elevator that achieves the above-mentioned object by utilizing existing members in the conventional elevator.

Further, an object of the present invention is to provide an elevator which can eliminate the work of carrying the stepladder from the warehouse to the pit and can reduce the work time and the number of steps.

[0018]

In order to achieve the above object, an elevator according to a first aspect of the present invention is provided with a workbench suspended from a bottom surface of an elevator car and vertically moved together with the elevator car. It is characterized by having.

The elevator according to the invention of claim 2 is
Further, the scaffolding plate of the workbench is a scaffolding plate that is vertically clamped to the lower part of the front of the elevator car except during work and is parallel to the bottom surface of the elevator car during work. .

The elevator according to the invention of claim 3 is
Further, the scaffolding board is characterized by including a link mechanism for reciprocatingly moving the scaffolding plate between a tightening position at a lower portion of the front surface of the elevator car and a tightening position parallel to the bottom surface of the elevator car.

The elevator according to the invention of claim 4 is
Further, the link mechanism includes a front part of the bottom surface of the elevator car and a first link that is rotatably coupled to one end of the scaffolding plate, and includes a first link including two sections, a rear part of the bottom surface of the elevator car, and the scaffolding plate. It is characterized in that it is a mechanism composed of at least one second link rotatably connected to the other end.

The elevator according to the invention of claim 5 is
The elevator according to the first aspect of the present invention is characterized by including an elevator operation control panel provided on the bottom surface of the elevator car or the workbench.

The elevator according to the invention of claim 6 is
The elevator according to claim 5, wherein the elevator operation control panel is provided on a portable operation operation device including an elevator operation operation switch, the elevator car bottom surface or the workbench, and the operation operation device operates. And a connector which is sometimes connected.

[0024]

According to the first aspect of the present invention, the worker performs the maintenance and inspection work of the bottom surface of the elevator car, the lowermost floor hanger case, and the lower end point switch on a stable workbench. Therefore, the maintenance and inspection work can be easily performed. Further, since the stepladder is not necessary, the operator who supports and assists the stepladder becomes unnecessary. In addition, there is no need to transport a stepladder between the warehouse and the pit.

According to the second aspect of the invention, the guard plate vertically clamped to the lower part of the front of the elevator car is moved at the time of work and clamped parallel to the bottom of the elevator car to be used as a scaffolding plate for a workbench. To do. That is, it is not necessary to use one plate for the two purposes of the guard plate and the scaffold plate, and to keep the workbench on the bottom of the elevator car at all times.

According to the third aspect of the present invention, the scaffolding plate is moved from the tightening position at the lower part of the front of the elevator car to the tightening position parallel to the bottom of the elevator car by using the link mechanism. Therefore, it is not necessary to remove the workbench from the elevator car, change the angle, and re-tighten the elevator car.

According to the invention of claim 4, the scaffold plate is moved by the operation of the following link mechanism. That is, the first link rotates about the mounting location on the front part of the bottom of the elevator car, and at the same time, the two links change from the folded state to the extended state. Further, the second link rotates around a mounting position on the rear portion of the bottom surface of the elevator car. By this operation, the scaffold plate moves while changing the angle with respect to the bottom surface of the elevator car from vertical to parallel.

According to the invention of claim 5, the worker is
The elevator car can be moved up and down by operating the elevator operation panel on the workbench. Therefore, there is no need for an auxiliary operator who operates the elevator operation panel in the elevator car to move the elevator car up and down to a position where it is easy to work.

According to the invention according to claim 6, in addition to the invention according to claim 5, the worker further installs the operation control device equipped with the operation switch of the operation panel on the bottom of the elevator car or the workbench during work. Connect to the provided connector.
That is, it is not necessary to constantly dispose the entire operation panel on the bottom of the elevator car or the workbench.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In the description of the embodiment, the above-mentioned FIG.
Elements given the same reference numerals as the elements shown in FIG. 12 have the same function, and a description thereof will be omitted.

FIG. 1 is a perspective view showing an outline of an elevator maintenance / inspection work table 20 for an elevator according to an embodiment of the present invention, and FIG. 2 is a side view of the same.

As shown in FIG. 1, the maintenance / inspection workbench 20 has a rectangular scaffolding board 1, which is clamped in parallel with the bottom of the elevator car 2 so that the operator can rest on the scaffolding board 1. Perform maintenance and inspection work. The tension of the scaffolding plate 1 is, as described below, a first link 6 and a second link 7 that support the scaffolding plate 1, and a support node that restrains the rotational movement of the first link 6 and the second link 7. 8 is used.

Two first links 6 are provided, one end of each of which is pivotally supported near the left and right corners of the front part of the bottom of the elevator car 2, and the other end of which is pivotally supported near the left and right corners of the front part of the scaffolding plate 1. By doing so, the front part of the scaffolding plate 1 is supported. Here, in this embodiment, the first link 6 has two sections. That is, one end 6a whose one end is pivotally supported on the bottom surface of the elevator car 2,
The second joint 6b is pivotally supported on the other end of the first joint 6a, and the other end of the second joint 6b is pivotally supported on the scaffolding plate 1.

Two second links 7 are provided, one end of each of which is pivotally supported near the left and right corners of the rear portion of the bottom of the elevator car 2 and the other end of which is pivotally supported near the left and right corners of the rear portion of the scaffolding plate 1. This supports the rear part of the scaffolding board 1. The second link 7 consists of one section.

The lengths of the first link 6 and the second link 7 are set so that an operator can easily perform maintenance work on the bottom of the elevator car 2 on the scaffolding plate 1. Further, in order to support the scaffolding plate 1 in parallel with the bottom surface of the elevator car 2, in the present embodiment, both the first link 6 and the second link 7 are provided perpendicularly to the bottom surface of the elevator car 2 and have substantially the same length. Is set to.

Two supporting nodes 8 are also provided corresponding to the first link 6 and the second link 7. The support bar 8 is composed of a single linear member, one end of which is pivotally supported together with the second link 7 on the rear part of the scaffolding plate 1 and the other end of which is attached to the first bar 6a by a tension pin (not shown) as shown in FIG. Being tied up. The first link 6 and the second link 7 are restrained from rotating by the support bar 8 being clamped to the first bar 6a, and thus the scaffolding plate 1 is in a clamped state.

Further, as shown in FIG. 2, a connector 11 is provided on the bottom surface of the elevator car 2, and an elevator operation control device equipped with an elevator operation control switch of the elevator operation control panel is connected during work.

Further, as shown in the figure, a latch 12 is provided on the bottom surface of the elevator car 2 and a safety rope for preventing a worker from falling into the hoistway S is attached at the time of work.

As described above, in this embodiment, the workbench 20 is suspended and installed under the bottom surface of the elevator car 2.

Further, the illustrated embodiment is characterized in that the scaffolding plate 1 of the workbench 20 moves to the lower part of the front surface of the elevator car 2 and is vertically fixed except when working.
In this tightening position, the scaffolding plate 1 is used similarly to the conventional guard plate 13 in FIG. 9, that is, when the elevator car 2 is stopped at a position other than the predetermined lifting position, the hoistway S or the hoistway S It is used to prevent an opening leading to and from falling into the hoistway S such as people or objects. As described above, if the scaffolding plate 1 of the workbench 20 according to the present invention is also used as the existing guard plate, it is not necessary to provide a new member as the scaffolding plate 1. Hereinafter, a state in which the scaffolding plate 1 is used as the guard plate will be described. FIG. 3 is a perspective view of such a use state, and FIG. 4 is a side view of the same.

As shown in FIGS. 3 and 4, the scaffolding plate 1 is vertically fixed so that the front side of the scaffolding plate 1 is aligned with the mounting plate 10 at the lower front of the elevator car 2.
The scaffolding plate 1 has such a shape and size that it can be used as the guard plate in this state. Further, bolt holes are formed in the left and right corners of the front part of the scaffolding plate 1, and the scaffolding plate 1 is tightened to the mounting plate 10 by passing tightening bolts 10a through the bolt holes.

With the scaffolding plate 1 clamped to the lower part of the bottom of the elevator car 2, as shown in FIG.
Is rotationally moved around the both-end shaft support and the shaft support between the first joint 6a and the second joint 6b, and as the front end of the bottom of the elevator car 2 and the front part of the scaffolding plate 1 come together, the shaft support at both ends approaches. It is folded. Further, the second link 7 is rotated around the shaft supporting portions at both ends, and is pivotally supported by the lower part of the scaffolding plate 1 vertically clamped and the rear part of the bottom surface of the elevator car 2, and the scaffolding plate 1 is
It supports the bottom.

In the present embodiment, the link whose both ends are pivotally supported is used to support the scaffolding plate 1, as described above, the scaffolding plate 1 is moved without removing the supporting columns of the scaffolding plate 1. This is to make it possible. Therefore, the length of each link and the axial support positions of both ends are set corresponding to the positions before and after the movement of the scaffolding plate 1. For example, since the second link 7 is composed of one section as described above, the second link 7 cannot move in response to the movement of the scaffolding plate 1 such that the distance between the pivotal positions changes. Therefore, the length of the second link 7 and the both-ends pivotal positions are set so that the distance between the pivotal positions does not change before and after the movement of the scaffolding plate 1.

Further, the support section 8 which holds the work table 20 tight
As shown in FIG. 4, one end that was fastened to the first joint 6a is removed, and it is rotated around the pivotal support with the scaffolding plate 1 and is integrated with the second link 7 by a fastening pin (not shown). Has been urged to. The support bar 8 is shorter than the second link 7, and if the support link 8 is tightly attached to the second link 7, it does not become a hindrance when the scaffolding plate 1 moves.

Next, how the scaffolding board 1 reciprocates from the tightening position parallel to the bottom surface of the elevator car 2 of FIG. 1 to the tightening position of the front lower part of the elevator car 2 of FIG. 3 used as the guard plate. explain.

FIG. 5 is a view showing a state in which the scaffolding board 1 is in the middle of movement. As shown in the figure, the first link 6 rotates around the pivotal support portion with the change in each pivotal support position, and the first link 6 moves in accordance with the change in the distance between the two pivotal support positions with the movement of the scaffolding plate 1. The angle between the node 6a and the second node 6b changes. Similarly, the second link 7 also rotates around the shaft supporting portion as the shaft supporting position changes. In this way, each link operates following the movement of the scaffolding plate 1, so that the scaffolding plate 1 can reciprocate between the both tightening positions.

The configuration of the elevator maintenance / inspection workbench 20 of the elevator according to the embodiment of the present invention has been described above.

Next, the procedure of the maintenance and inspection work of the elevator in the embodiment of the present invention, especially the maintenance and inspection work of the bottom surface of the elevator car 2, the hanger case 3a on the bottom floor and the lower end point switch D will be described with reference to FIGS. It will be described based on.

Before the maintenance / inspection work, the worker H1 moves the scaffolding plate 1 used as a guard plate on the lower front side of the elevator car 2 to install the workbench 20, so this work will be described first.

As shown in FIG. 6, the worker H1 stops the elevator car 2 at the floor immediately above the lowest floor. And
Open the elevator door 3 at the bottom floor platform 4. Next, the tightening bolts 10a that tighten the scaffolding plate 1 are removed, and the scaffolding plate 1 is moved to a position parallel to the bottom surface of the elevator car 2 as shown in FIG. Furthermore, one end of the support link 8 is removed from the second link 7, and the support link 8 is rotated around the pivotal support portion with the scaffolding plate 1 to be tightened to the first link 6a of the first link 6. In this state, the workbench 20 is clamped so that the scaffolding plate 1 is parallel to the bottom surface of the elevator car 2.

Next, as shown in FIG. 8, an elevator operating device 11a equipped with an elevator operating switch of the elevator operating panel is provided with a connector 11 provided on the bottom surface of the elevator.
Connect to. Further, the worker H1 connects the safety rope L to the latch 12 provided on the bottom of the elevator car and the body of the worker.

After the above operation, the worker H1 performs maintenance and inspection work on the workbench. Here, in the maintenance and inspection work of the lowermost hanger case 3a and the lower end point switch D, the worker H1 operates the elevator operation device 11a on the workbench to move the elevator car 2 to the position where it is most easy to work. And the work table 20 is moved up and down to perform work.

In the above maintenance and inspection work, one worker H1 can easily perform the work on the stable work table 20. Therefore, the stepladder G is unnecessary, and an auxiliary operator who moves the elevator car 2 up and down and supports the stepladder G is also unnecessary. Furthermore, the hanger case 3 on the bottom floor
Compared with the case where one operator inspects the inside of a in the elevator car (conventional example shown in FIG. 11), the elevator car door 2a does not get in the way, so the work is easier.

After the work is completed, the scaffolding board 1 is reversed in the reverse order of the above.
Is vertically fixed to the lower part of the front of the elevator car 2 and used again as the guard plate.

[0055]

According to the first aspect of the invention, the worker performs the maintenance and inspection work of the bottom of the elevator car, the inside of the hanger case on the lowermost floor and the lower end point switch on a stable workbench. Therefore, it is possible to provide an elevator that can easily perform such maintenance and inspection work.

Further, since the stepladder is not necessary, an operator who performs an auxiliary work for supporting the stepladder is unnecessary. Therefore, it is possible to provide an elevator in which one worker can perform the above maintenance and inspection work.

Further, the work of carrying the stepladder from the warehouse to the pit becomes unnecessary. Therefore, it is possible to provide an elevator that can reduce the work time and man-hours of the above maintenance and inspection work.

According to the second aspect of the present invention, the guard plate vertically clamped to the lower part of the front of the elevator car is moved at the time of work and clamped in parallel to the bottom of the elevator car to be used as a scaffolding plate for a workbench. To do. That is, the guard plate, which is an existing member, can also be used as the scaffold plate during work, and an elevator including the work platform can be provided without using a new member as the scaffold plate.

According to the third aspect of the present invention, the scaffold plate is moved from the tightening position at the lower part of the front of the elevator car to the tightening position parallel to the bottom of the elevator car by using the link mechanism. Therefore, it is not necessary to remove the workbench from the elevator car once, then change the angle and re-tighten the elevator car again, and the working time and man-hours can be reduced.

According to the invention described in claim 4, the link mechanism is composed of a small number of members. Therefore, an elevator equipped with the workbench can be provided without adding many members.

According to the invention of claim 5, the worker is
The elevator car can be moved up and down by operating the elevator operation panel on the workbench. Therefore, there is no need for an auxiliary worker who operates the elevator operation control panel in the elevator car to move the elevator car up and down to a position where it is easy to work, and the maintenance and inspection work can be performed by one worker. .

According to the invention described in claim 6, in addition to the invention according to claim 5, the worker further installs a driving operation device having an operation switch of the operation panel on the bottom surface of the elevator car or the workbench during work. Connect to the provided connector.
That is, it is not necessary to constantly dispose the entire operation panel on the bottom surface of the elevator car or the workbench.

[Brief description of drawings]

FIG. 1 is a perspective view of an elevator maintenance and inspection workbench according to an embodiment of the present invention.

FIG. 2 is a side view of the workbench.

FIG. 3 is a perspective view showing a state where the scaffolding plate of the workbench is used as a guard plate on the lower front of the elevator car.

FIG. 4 is a side view of the state of FIG.

FIG. 5 is a side view showing a state where the scaffold plate of the workbench is moving.

FIG. 6 is a schematic view showing an elevator maintenance / inspection work in the embodiment.

FIG. 7 is a schematic view showing an elevator maintenance / inspection work in the embodiment.

FIG. 8 is an enlarged view of a workbench portion when performing the work.

FIG. 9 is a schematic view showing a maintenance / inspection operation of the bottom surface of an elevator car of an elevator according to a conventional technique.

FIG. 10 is a schematic view showing maintenance and inspection work inside a hanger case of an elevator according to a conventional technique.

FIG. 11 is a schematic view showing a maintenance / inspection work inside a hanger case of an elevator according to a conventional technique.

FIG. 12 is a schematic view showing a maintenance and inspection work of a lower end point switch of an elevator according to a conventional technique.

[Explanation of symbols]

1 scaffolding board, 2 elevator car, 2a elevator car door, 3 elevator door, 3a hanger case, 4
Bottom floor platform, 5 Middle floor platform, 6 1st link,
6a 1st section of 1st link, 6b 2nd section of 1st link, 7 2nd link, 8 support section, 11 connector, 1
2 safety rope latch, 13 guard plate, 20 workbench, S hoistway, P pit, D bottom end switch,
H1, H2 workers, G stepladder, L safety rope.

Claims (6)

[Claims] 1. An elevator comprising a workbench suspended from a bottom surface of an elevator car and vertically moved together with the elevator car. 2. The elevator according to claim 1, wherein the scaffolding plate of the workbench is vertically clamped to a lower portion of the front surface of the elevator car except during work, and is parallel to the bottom surface of the elevator car during work. An elevator characterized by being a scaffolding board. 3. The elevator according to claim 2, further comprising a link mechanism that moves the scaffolding plate back and forth between a tightening position at a lower front portion of the elevator car and a tightening position parallel to the bottom surface of the elevator car. An elevator characterized by that. 4. The elevator according to claim 3, wherein the link mechanism includes a first link including at least one two-section rotatably connected to a front portion of the elevator car bottom surface and one end of the scaffold plate, An elevator comprising a rear portion of the bottom surface of the elevator car and a second link including at least one joint rotatably coupled to the other end of the scaffold plate. 5. The elevator according to claim 1, further comprising an elevator operation control panel provided on the bottom surface of the elevator car or the workbench. 6. The elevator according to claim 5, wherein the elevator operation control panel is provided on a portable operation control device including an elevator operation control switch, and on the bottom surface of the elevator car or the workbench.
An elevator, comprising: a connector to which the operation device is connected during work.