JPH06239551A - Safety device for maintenance work of elevator - Google Patents

Abstract

PURPOSE:To provide a safety device for a maintenance work for a elevator to perform ordinary operation in a state to mount a collision preview body. CONSTITUTION:A car 2 and a balancing weight 6 elevated in a reverse direction to each other through a main cable 10 are arranged in an elevator shaft 1. A collision preview body 7 is mounted on the fixed body 15 in the elevator shaft 1 and located in a horizontal direction between the car 2 and the balancing weight 6 and arranged in a spot where the two members approach and are positioned facing each other. The collision preview body 7 is arranged in a static state and this constitution causes elimination of a fear of damage occurring owing to contact of the collision preview body 7 with the balancing weight 6 and the reversing car 2 during ordinary operation. This constitution causes execution of normal ordinary operation and provision of safety of a work on the car.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for maintenance work of an elevator for work performed on a car.

[0002]

2. Description of the Related Art FIG.
It is a figure which shows the conventional safety device for maintenance work of the elevator shown by the publication, and is a conceptual diagram of the work condition on the elevator car. In the figure, (1) is the elevator hoistway,
(2) is a car that goes up and down the predetermined route of the hoistway (1),
(3), a car frame (4) and a safety fence (5) horizontally provided from the upper part of the car frame (4) are provided. Although not shown, (6) is connected to the other end of the main rope which is connected to the car (2) at one end, and moves up and down the predetermined path of the hoistway (1) in the direction opposite to the car (2). The counterbalance weight (7) is a collision predictor that is suspended from the counterweight (6) by the rope (8) and is located below the lower end of the counterweight (6), and the car (9) is a basket ( A worker who works on the ceiling (3) of 2).

The conventional safety device for maintenance work of an elevator is constructed as described above, and works on the car (2) when the car (2) and the counterweight (6) move in the directions approaching each other. Before the counterweight (9) collides with the worker (9) while the worker (9) leans toward the counterweight (6), the collision predictor (7) is pushed by the worker (9). Hit This informs the worker (9) of the danger.

[0004]

In the conventional safety device for maintenance work of elevators as described above, the elevator is hung from the counterweight (6) by the rope (8) and placed below the counterweight (6). The collision predictor (7) thus swayed due to the lifting of the counterweight (6) during normal operation. Therefore, the collision predictor (7) runs counter to the counterweight (6), the car (2), and
There has been a problem that a member (not shown) fixed to the hoistway (1) or the like is contacted with and damaged. Note that the car (2) and the like are usually operated at low speed during maintenance and inspection work.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a safety device for maintenance work of an elevator which can be normally operated at a high speed with a collision predictor. To do.

[0006]

In a safety device for maintenance work of an elevator according to a first aspect of the present invention, a car and a hoistway arranged in the hoistway and suspended at one end of a main rope are provided. A counterweight, which is placed and hung on the other end of the main rope, moves up and down a predetermined path in the opposite direction, and is attached to a fixed body in the hoistway and is provided horizontally between the car and the counterweight. A collision predictor is provided at a position close to and facing each other in the vertical direction.

Further, in the safety device for maintenance work of the elevator according to the second aspect of the present invention, the elevator is arranged in the hoistway and is suspended in one end of the main rope, and is arranged in the hoistway. A balance weight, which is suspended from the other end of the rope, moves up and down a predetermined path in the opposite direction, and is attached to a fixed body in the hoistway and is horizontally provided between the car and the balance weight. There is provided a collision predicting body constituted by a supporting body arranged at an approaching and facing position in the vertical direction and a predicting member separably engaged with the supporting body.

Further, in the safety device for maintenance work of the elevator according to the third aspect of the present invention, a car arranged in the hoistway and hung at one end of the main rope and a hoistway are mainly arranged. A balance weight, which is suspended from the other end of the rope, moves up and down a predetermined path in the opposite direction, and is attached to a fixed body in the hoistway and is horizontally provided between the car and the balance weight. There are provided a collision predictor configured by a support body arranged at an approaching and facing position in the up and down direction, a prediction member separably engaged with the support body, and an alarm device which operates by the displacement of the prediction member.

[0009]

The collision predictor according to the first aspect of the present invention constructed as described above is mounted on the fixed body of the hoistway and is provided horizontally between the car and the counterweight. They are arranged in a stationary state at a position where both of them approach each other in the vertical direction.

Further, the collision predicting body of the invention according to claim 2 of the present invention configured as described above is detachably engaged with the support mounted on the fixed body of the hoistway and the support. The predictive member is provided between the car and the counterweight in the horizontal direction, and is statically disposed at a position close to and facing each other in the vertical direction.

Further, the collision predicting body of the invention according to claim 3 of the present invention constructed as described above is detachably engaged with the support body mounted on the fixed body of the hoistway. The predictive member is provided between the car and the counterweight in the horizontal direction, and is statically disposed at a position close to and facing each other in the vertical direction. Further, an alarm is issued by the displacement of the predicting member.

[0012]

【Example】

Example 1. 1 and 2 are views showing an embodiment of the present invention, in which FIG. 1 is a vertical side view conceptual diagram of an elevator apparatus, FIG.
FIG. 3 is an enlarged perspective view of a collision predictor body portion of FIG. 1. In the figure, (1) is a hoistway of an elevator, (2) is a car that goes up and down a predetermined path of the hoistway (1), and is horizontal from the top of the ceiling (3), car frame (4) and car frame (4) There is a safety fence (5) protruding from. (6) is a counterweight that is connected to the other end of the main rope (10), one end of which is connected to the car (2), and that moves up and down the predetermined path of the hoistway (1) in the direction opposite to the car (2). , (11) is a machine room installed above the hoistway (1), (12) is a hoist installed in the machine room (11) and around which the main rope (10) is wound, and (13) is Bracket (14)
A car rail that stands on the wall of the hoistway (1) and guides the car 2 up and down, and (15) is the hoistway (1) by the bracket (16).
It is a fixed body consisting of a counterweight rail that is erected on the wall and guides the lifting and lowering of the counterweight (6).

Reference numeral (7) denotes a support body (17) and a support body fastened to a fixed body (15) composed of counterweight rails, which are U-shaped in a plan view and whose both ends are opposed to each other and stand upright. A collision predicting body composed of a rod-shaped predicting member (19) suspended from a body (17) by a strip-shaped member (8) such as a car (2) and a counterweight (6) in the horizontal direction. Is provided between the two and is disposed at a position where both of them approach and face each other in the vertical direction. (9) is a worker who works on the ceiling (3) of the car (2).

In the safety device for maintenance work of the elevator constructed as described above, the car (2) and the counterweight (6)
If the workers (9) working on the car (2) lean toward the counterweight (6), the counterweight (6) is The predicting member (19) of the collision predictor (7) hits the worker (9) before the collision with the collision object (9).
As a result, the worker (9) is informed of the danger and problems such as injury are prevented in advance.

Since the collision predicting body (7) is provided on the fixed body (15) composed of the counterweight rails, it can be placed in a stationary state and rocked by the lifting operation of the counterweight (6) or the like. There is no. Therefore, the collision predictor (7) is a counterweight (6) during normal operation at high speed, and this counterweight (6) is a counterweight.
It is possible to operate normally without fear of damage by contacting the car (2) running in the opposite direction and the member (not shown) fixed to the hoistway (1), etc., and the balancing weight (6) The safety of the worker (9) can be obtained.

Example 2. 3 and 4 are views showing another embodiment of the present invention, FIG. 3 is a plan view corresponding to the above-mentioned FIG. 2, and FIG. 4 is a view showing a separated state of the predicting member of FIG.
The configuration is similar to that of FIGS. 1 and 2, except for FIGS. 3 and 4. In the figure, (7) is a rod-shaped support body (17) fastened to a fixed body (15) composed of counterweight rails, one side of which is erected so as to be spaced apart from each other and facing each other. A rod-shaped predictive member (19) that is separably adsorbed by the magnet (18) attached to the other end and the magnets (18) whose both ends face each other.
It is a collision predictor composed of
It is provided between both (2) and the counterweight (6), and is arranged in a stationary state at a position where both of them approach and face each other in the vertical direction.

Also in the embodiment of FIGS. 3 and 4, the car
When the (2) and the counterweight (6) move toward each other, the counterweight (9) for the worker working on the car (2)
Before the counterweight (6) collides with the worker (9) while leaning toward the (6) side, the predicting member (19) of the collision predictor (7) hits the worker (9). Then, as shown in FIG.
At least one end of the prediction member (19) separates against the attraction force of 8). Therefore, although detailed description is omitted, it is clear that the same effects as those of the embodiments of FIGS. 1 and 2 can be obtained in the embodiments of FIGS. 3 and 4. Moreover, FIG. 3 and FIG.
In the embodiment, the predicting member (19) is supported by the magnet (18).
Since it is attached to (17), it can be easily removed when necessary and can be easily restored.

Example 3. FIG. 5 is also a diagram showing another embodiment of the present invention. FIG. 5 is a diagram corresponding to FIG. 4 described above, and is configured similarly to FIG. 1 and FIG. 2 except for FIG. In the figure,
(7) is a rod-shaped support body (17) fastened to a fixed body (15) composed of counterweight rails that are erected facing each other with one side separated from each other, and at the other end of the support body (17). A collision predictor composed of a mounted magnet (18) and a rod-shaped predictive member (19) that is separably adsorbed by the magnets (18) facing each other at both ends. It is provided between both of the weights (6) and is placed in a stationary state at a position where the both weights approach and oppose each other in the vertical direction. (20) is the support
The fall prevention tool is composed of a flexible strip in which (17) and the predicting member (19) are connected.

Also in the embodiment of FIG. 5, when the car (2) and the counterweight (6) move in the directions of approaching each other,
When the worker (9) working on the basket (2) leans toward the counterweight (6), the counterweight (6) is used by the worker (9).
Before the collision, the prediction member (19) of the collision predictor (7)
Hit (9). Then, as shown in FIG. 5, at least one end of the predicting member (19) separates against the attractive force of the magnet (18). Therefore, although detailed description is omitted, it is obvious that the embodiment of FIG. 5 can also obtain the same operation as that of the embodiment of FIGS.

Further, in the embodiment of FIG. 5, the predicting member (19)
Is attached to the support (17) by the magnet (18), so that it can be easily removed when needed and can be easily returned. Furthermore, since the predicting member (19) is connected to the support (17) by the fall prevention tool (20), the predicting member (19) separated from the support (17) may fall into the hoistway (1). Can be prevented. Then, it is possible to prevent damage from occurring due to the fall of the predicting member (19).

Example 4. FIG. 6 is also a diagram showing another embodiment of the present invention. FIG. 6 is a diagram corresponding to FIG. 2 described above, and is configured similarly to FIG. 1 and FIG. 2 except for FIG. In the figure,
(7) is a collision predictor, which is fixed to the wall of the hoistway (1) and is fixed to the fixed body (15) that is a bracket to which the counterweight rails that are erected upright apart from each other are fastened. It is separable by the support body (17) which is fastened to each other in a rod shape, the magnet (18) attached to the other end of the support body (17) and the magnet (18) which is U-shaped in the plane and has opposite ends. It consists of the adsorbed predicting member (19), and the cage is horizontal.
It is provided between both (2) and the counterweight (6), and is arranged in a stationary state at a position where both of them approach and face each other in the vertical direction.

Also in the embodiment of FIG. 6, when the car (2) and the counterweight (6) move in the directions of approaching each other,
When the worker (9) working on the basket (2) leans toward the counterweight (6), the counterweight (6) is used by the worker (9).
Before the collision, the prediction member (19) of the collision predictor (7)
Hit (9). Then, at least one end of the predicting member (19) separates against the attractive force of the magnet (18). Therefore, although detailed description is omitted, it is obvious that the embodiment of FIG. 6 can obtain the same operation as that of the embodiments of FIGS. 1 and 2.

Further, in the embodiment of FIG. 6, the predicting member (19)
Is attached to the support (17) by the magnet (18), so that it can be easily removed when needed and can be easily returned. Further, the support body (17) is attached to the fixed body (15) which is fixed to the wall of the hoistway (1) and is composed of a bracket to which the counterweight rails which are erected apart from each other and stand upright are fastened. Therefore, the device configuration can be simplified and the manufacturing cost can be reduced.

Example 5. 7 and 8 are views showing another embodiment of the present invention, FIG. 7 is a view corresponding to FIG. 2 described above, and FIG. 8 is a view showing a separated state of the predicting member of FIG. 8 is the same as that of FIGS. 1 and 2. In the figure, (7) is a collision predictor, which is a support body (17) fastened to a fixed body (15) consisting of counterweight rails that are rod-shaped and one side of which is erected facing each other apart from each other. Prediction member (19) consisting of a flexible strip stretched between the supports (17) of the
And is provided between the car (2) and the counterweight (6) in the horizontal direction, and is disposed in a stationary state at a position where the two are approaching and facing each other in the vertical direction. Reference numeral (22) is an alarm device provided at the tip of the support (17) on one side and made up of sound, light emitting device and the like, and the ends of the predicting members (19) facing each other are detachably engaged.

Also in the embodiment shown in FIGS. 7 and 8, the car
When the (2) and the counterweight (6) move toward each other, the counterweight (9) for the worker working on the car (2)
Before the counterweight (6) collides with the worker (9) while leaning toward the (6) side, the predicting member (19) of the collision predictor (7) hits the worker (9). Therefore, although detailed description is omitted, it is apparent that the same effects as those of the embodiments of FIGS. 1 and 2 can be obtained in the embodiments of FIGS. 7 and 8.

In the embodiment of FIGS. 7 and 8, the predicting member (19) hits the worker (9), and the end of the predicting member (19) on the alarm device (22) side is separated as shown in FIG. To do. As a result, the alarm device (22) operates and the worker (9) is informed of the danger, so that a higher safety action can be obtained.
In addition, it is possible to improve the safety by stopping the elevator at the time of an abnormality by the operation of the alarm device (22) or by reporting the occurrence of the abnormality to the outside of the elevator device.

[0027]

As described above, the invention according to claim 1 of the present invention is arranged in the hoistway and hung at one end of the main rope, and is arranged in the hoistway and at the other end of the main rope. The suspended basket is a counterweight that moves up and down a predetermined path in the opposite direction.
A collision predictor is provided which is mounted on a fixed body of a hoistway and is provided between both the car and the counterweight in the horizontal direction, and which is arranged at a position where both of them approach and oppose each other in the vertical direction.

As a result, the collision predictor is mounted on the fixed body of the hoistway, is provided between the car and the counterweight in the horizontal direction, and is statically arranged at a position close to and facing each other in the vertical direction. . Therefore, during normal operation at high speed, the collision predictor is able to operate normally without fear of being damaged by contacting the counterweight with the counterweight, the car running in reverse with the counterweight, or the member fixed to the hoistway. , It is effective in preventing the danger of the worker due to the counterweight.

Further, as described above, the invention according to claim 2 of the present invention is arranged in the hoistway and hung at one end of the main rope, and is arranged in the hoistway and at the other end of the main rope. The suspended car is a counterweight that moves up and down a predetermined path in the opposite direction, and is installed between the car and the counterweight in the horizontal direction by being attached to the fixed body of the hoistway, and the above two approaches in the vertical direction. The collision predicting body is provided by a supporting body arranged at a position and a predicting member detachably engaged with the supporting body.

Thus, the collision predicting body is constituted by the supporting body mounted on the fixed body of the hoistway and the predicting member detachably engaged with the supporting body, and both the car and the counterweight are horizontally arranged. It is provided between them and is placed in a stationary state at a position where both of them are close to each other in the vertical direction. Therefore, during normal high-speed operation, the collision predictor can be operated normally without the risk of damage due to contact with the car that counterbalances the counterweight, the car that runs in reverse with the counterweight, or members that are fixed to the hoistway. In addition, it is effective in preventing the danger of the worker due to the counterweight. In addition, the predicting member is detachably attached to the support, can be easily removed when necessary, and can be easily returned, which has the effect of facilitating handling.

Further, as described above, the invention according to claim 3 of the present invention is arranged in the hoistway and hung at one end of the main rope, and is arranged in the hoistway and at the other end of the main rope. The suspended car is a counterweight that moves up and down a predetermined path in the opposite direction, and is installed between the car and the counterweight in the horizontal direction by being attached to the fixed body of the hoistway, and the above two approaches in the vertical direction. A collision predictor including a support disposed at a position and a predicting member that is separably engaged with the support, and an alarm device that operates according to the displacement of the predicting member are provided.

Thus, the collision predicting body is composed of the supporting body mounted on the fixed body of the hoistway and the predicting member detachably engaged with the supporting body, and both the car and the counterweight are horizontally arranged. It is provided between them and is placed in a stationary state at a position where both of them are close to each other in the vertical direction. Further, an alarm is issued by the displacement of the predicting member. Therefore, during normal operation at high speed, the collision predictor can be operated normally without the risk of damage by contacting the counterweight with the counterweight, the car that runs in reverse with the counterweight, or the member fixed to the hoistway. At the same time, it is effective in preventing the danger of the worker due to the counterweight. In addition, due to the danger notification by the operation of the alarm device,
There is an effect of obtaining higher safety.

[Brief description of drawings]

FIG. 1 is a conceptual vertical cross-sectional side view of an elevator apparatus showing a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a collision predictor body portion of FIG.

FIG. 3 is a view showing a second embodiment of the present invention and is equivalent to the plan view of FIG. 2 described above.

FIG. 4 is a view showing a separated state of the prediction member of FIG.

FIG. 5 is a view showing the third embodiment of the present invention and is equivalent to FIG. 4 described above.

FIG. 6 is a diagram showing a fourth embodiment of the present invention, which is equivalent to FIG. 2 described above.

FIG. 7 is a diagram showing a fifth embodiment of the present invention, which is equivalent to FIG.

FIG. 8 is a view showing a separated state of the prediction member of FIG.

FIG. 9 is a view showing a conventional safety device for maintenance work of an elevator in the related art, and is a conceptual diagram of a work state on an elevator car.

[Explanation of symbols]

 1 Hoistway 2 Cage 6 Counterweight 7 Collision predictor 10 Main rope 15 Fixed body 17 Support 19 Prediction member 22 Alarm device

Claims (3)

[Claims] 1. A car arranged in a hoistway and suspended at one end of a main rope, and a car arranged in the hoistway and suspended at the other end of the main rope, and the car moves up and down a predetermined path in the opposite direction. The counterweight is mounted on the fixed body of the hoistway, and is provided between the car and the counterweight in the horizontal direction, and is provided with a collision predictor disposed at a position close to and facing each other in the vertical direction. Safety device for elevator maintenance work. 2. A car arranged in a hoistway and suspended at one end of a main rope, and a car arranged in the hoistway and suspended at the other end of the main rope, and the car moves up and down a predetermined path in the opposite direction. A counterweight, a support that is attached to a fixed body of the hoistway, is provided between both the car and the counterweight in the horizontal direction, and is disposed at a position close to and facing each other in the vertical direction, and the support. Safety device for maintenance work of an elevator having a collision predictor constituted by a predicting member separably engaged with the vehicle. 3. A car arranged in the hoistway and suspended at one end of the main rope, and a car arranged in the hoistway and suspended at the other end of the main rope, and the car moves up and down a predetermined path in the opposite direction. A counterweight, a support that is attached to a fixed body of the hoistway, is provided between both the car and the counterweight in the horizontal direction, and is disposed at a position close to and facing each other in the vertical direction, and the support. A safety device for maintenance work of an elevator, comprising: a collision predicting body composed of a predicting member separably engaged with the vehicle; and an alarm device which operates by a displacement of the predicting member.