JP7412643B2 - Elevator work aids - Google Patents

Description

The present disclosure relates to an elevator work assisting device provided in a hoistway.

BACKGROUND ART Conventionally, elevators are known in which columns are provided at the bottom of a hoistway in order to secure a work space for workers at the bottom of the hoistway. The column lies at the bottom of the hoistway during normal operation of the elevator. Further, the support column is erected at the bottom of the hoistway by a worker during maintenance of the elevator. In a state where the support is erected at the bottom of the hoistway, when the car moves below the lowest floor, the car hits the support and the downward movement of the car is blocked (for example, see Patent Document 1).

International Publication No. 99/47447

However, in the conventional elevator shown in Patent Document 1, it is necessary for a worker to enter the bottom of the hoistway and erect a support when maintaining the elevator. Therefore, the work burden on the workers at the bottom of the hoistway increases.

The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to obtain an elevator work assisting device that can reduce the work burden on workers at the bottom of a hoistway.

An elevator work auxiliary device according to the present disclosure includes a support that is fixed in a hoistway in which a car moves, and is supported by the support and is disposed between the bottom of the hoistway and the car in the height direction of the hoistway. a car receiving structure connected to the car receiving structure and a cable member connected to the landing sill; The car receiving structure is fixed in position, and the state of the car receiving structure is between the threshold reaching state where the car receiving structure reaches the landing sill from the support and the retracted state where the car receiving structure comes off from the landing sill. When the hoistway is viewed from above, when the state of the car receiving structure reaches the threshold state, a part of the car receiving structure overlaps the area of the car, and the state of the car receiving structure changes. By changing the state to the retracted state, the car receiving structure moves out of the area of the car.

According to the elevator work assisting device according to the present disclosure, it is possible to reduce the work burden on the worker at the bottom of the hoistway.

1 is a side view showing an elevator according to Embodiment 1. FIG. FIG. 2 is an enlarged view of the bottom of the hoistway of FIG. 1; 3 is a sectional view taken along line III-III in FIG. 2. FIG. FIG. 3 is an enlarged view showing the work assisting device of FIG. 2; FIG. 5 is an enlarged view showing the work assisting device when the car receiving structure in FIG. 4 is in a retracted state. FIG. 3 is a side view showing a work assisting device according to a second embodiment. FIG. 7 is an enlarged view showing a state in which a car receiving structure of a work assisting device according to a third embodiment is fixed to a landing threshold; FIG. 7 is an enlarged view showing a state in which a car receiving structure of a work assisting device according to a fourth embodiment is fixed to a landing threshold; FIG. 7 is a top view showing a work assisting device according to a fifth embodiment. FIG. 10 is a top view showing a state in which the protrusion of the car receiving structure shown in FIG. 9 is fitted into the sill groove of the landing sill. FIG. 7 is a side view showing a work assisting device according to a sixth embodiment. 12 is a sectional view taken along line XII-XII in FIG. 11. FIG. FIG. 13 is a sectional view showing each work assisting device when the car receiving structure in FIG. 12 is in a retracted state.

Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1.
FIG. 1 is a side view showing an elevator according to a first embodiment. FIG. 2 is an enlarged view of the bottom of the hoistway of FIG. 1. FIG. 3 is a sectional view taken along line III-III in FIG. 2. In the figure, a car 2 and a counterweight 3 are provided in a hoistway 1. The car 2 and the counterweight 3 are movable within the hoistway 1 in the height direction of the hoistway 1. A hoisting machine 4 is installed at the upper part of the hoistway 1. The hoist 4 generates a driving force to move the car 2 and the counterweight 3.

The hoist 4 has a drive sheave 41. A plurality of main ropes 5 serving as suspension bodies are wound around the drive sheave 41. The car 2 and the counterweight 3 are suspended within the hoistway 1 by a plurality of main ropes 5. The car 2 and the counterweight 3 move within the hoistway 1 in the height direction of the hoistway 1 due to the rotation of the drive sheave 41. In addition, in FIG. 1, a plurality of main ropes 5 are shown as one main rope 5. As the suspension body, a belt may be used instead of a rope.

A hall entrance/exit 21 is provided on each floor of the building. The hoistway 1 is open to a landing through a landing entrance/exit 21 on each floor. Here, the left-right direction when looking at the hoistway 1 from the landing is defined as the width direction of the hoistway 1. Further, a direction perpendicular to both the width direction and the vertical direction of the hoistway 1 is defined as the depth direction of the hoistway 1. At this time, the frontage direction of the hall entrance/exit 21 on each floor coincides with the width direction of the hoistway 1.

A landing threshold 23 is arranged along the frontage direction of the landing entrance 21 at the bottom of each landing entrance 21 provided on each floor. The landing threshold 23 is fixed to the floor of each floor. As shown in FIGS. 2 and 3, a sill groove 24 is provided on the upper surface of the landing sill 23 along the frontage direction of the landing entrance 21. The lower end portions of each of the pair of landing doors 22 are inserted into the threshold groove 24 . On each floor, the hall entrance/exit 21 is opened/closed by moving the pair of hall doors 22 toward the frontage of the hall entrance/exit 21 .

In the hoistway 1, as shown in FIG. 3, a pair of car guide rails 6 and a pair of counterweight guide rails 7 are installed. The pair of car guide rails 6 are opposed to each other in the width direction of the hoistway 1. The car 2 is arranged between a pair of car guide rails 6. A pair of counterweight guide rails 7 are opposed to each other in the width direction of the hoistway 1. The counterweight 3 is arranged between a pair of counterweight guide rails 7.

When the hoistway 1 is viewed from above, the car 2 is located closer to the landing entrance 21 than the counterweight 3. Therefore, the pair of car guide rails 6 are arranged closer to the hall entrance 21 than the pair of counterweight guide rails 7. When the car 2 and the counterweight 3 move within the hoistway 1, the car 2 is guided by a pair of car guide rails 6, and the counterweight 3 is guided by a pair of counterweight guide rails 7.

Elevator equipment (not shown) is installed at the bottom of the hoistway 1. Examples of elevator equipment include car shock absorbers and counterweight shock absorbers. When a worker performs maintenance work on the elevator equipment installed at the bottom of the hoistway 1, the elevator work auxiliary device 8 is used to secure a work space for the worker at the bottom of the hoistway 1. . The work auxiliary device 8 prevents the car 2 from entering the bottom of the hoistway 1. The bottom of the hoistway 1 is a space within the hoistway 1 that exists below the lower end of the car 2 when the car 2 is stopped at the lowest floor.

A pair of work auxiliary devices 8 are provided within the hoistway 1 . Each of the pair of work auxiliary devices 8 is provided between the bottom of the hoistway 1 and the car 2 in the height direction of the hoistway 1. In this embodiment, one of the pair of work auxiliary devices 8 is attached to one car guide rail 6, and the other work auxiliary device 8 is attached to the other car guide rail 6. . The configuration of one work auxiliary device 8 is similar to the configuration of the other work auxiliary device 8. Therefore, only the configuration of one work auxiliary device 8 will be described.

The work auxiliary device 8 includes a car receiving structure 9, a support 10, and a cable body 11.

The support 10 is fixed within the hoistway 1. In this embodiment, the support 10 is fixed to the car guide rail 6. Furthermore, when the hoistway 1 is viewed from above, the support 10 is fixed at a position away from the respective regions of the car 2 and the counterweight 3, as shown in FIG. The support 10 includes a fixed plate 101 and an inclined plate 102.

The fixed plate 101 overlaps the back surface of the car guide rail 6. Thereby, the fixed plate 101 is arranged perpendicularly to the width direction of the hoistway 1. Furthermore, the fixing plate 101 is removably fixed to the car guide rail 6 by a rail clip (not shown).

The inclined plate 102 is fixed to the end of the fixed plate 101. Further, the inclined plate 102 is inclined with respect to the fixed plate 101. The fixed plate 101 is fixed in the hoistway 1 with the end to which the inclined plate 102 is fixed facing the hall entrance/exit 21 side. When the support 10 is viewed from above, the inclined plate 102 protrudes from the end of the fixed plate 101 in the direction toward the hall entrance 21 while approaching the widthwise center of the hoistway 1.

The car receiving structure 9 is supported by a support 10. Further, the car receiving structure 9 is arranged between the bottom of the hoistway 1 and the car 2 in the height direction of the hoistway 1. In this embodiment, the car receiving structure 9 is arranged at a height matching the floor surface of the lowest floor.

The car receiving structure 9 is an elongated member that can be expanded and contracted. Further, the car receiving structure 9 includes a plurality of first link members 91 and a plurality of second link members 92. The multiple first link members 91 and the multiple second link members 92 are multiple link members connected in series. That is, the car receiving structure 9 is a link member connected body in which a plurality of first link members 91 and a plurality of second link members 92 are connected in series. In the car receiving structure 9, first link members 91 and second link members 92 are alternately connected in series.

A first link member 91 and a second link member 92, which are two link members adjacent to each other, are connected to each other by a connecting shaft 93. The connecting shaft 93 connects the longitudinal ends of the first link member 91 and the second link member 92 to each other. The first link member 91 and the second link member 92, which are two link members adjacent to each other, are rotatable about a connecting shaft 93. The connecting shaft 93 is perpendicular to the longitudinal direction of the first link member 91 and the second link member 92. Here, the direction along the connecting shaft 93 is defined as the width direction of the car receiving structure 9. In this embodiment, the car receiving structure 9 is supported by the support 10 with the width direction of the car receiving structure 9 being horizontal.

Each first link member 91 is a rod-shaped member. Each second link member 92 has a pair of link plates 921. The pair of link plates 921 are opposed to each other in the width direction of the car receiving structure 9.

At the connecting portion between the first link member 91 and the second link member 92, the first link member 91 is inserted between a pair of link plates 921. Moreover, at the connection portion between the first link member 91 and the second link member 92, the connection shaft 93 passes through the first link member 92 and the pair of link plates 921.

One end of the car receiving structure 9 is a sill-side end. The other end of the car receiving structure 9 is the opposite end to the sill. The position of the end of the car receiving structure 9 on the threshold side is closer to the landing sill 23 than the position of the end of the car receiving structure 9 on the side opposite to the threshold. The opposite end of the car receiving structure 9 to the sill is attached to a support 10. In this embodiment, the link member on which the threshold side end of the car receiving structure 9 is formed is the first link member 91 . Further, in this embodiment, the link member on which the opposite end of the car receiving structure 9 is formed is the second link member 92 .

The opposite end of the car receiving structure 9 to the sill is attached to the inclined plate 102 by a support shaft 12. The support shaft 12 is perpendicular to the inclined plate 102. Further, the support shaft 12 is arranged horizontally. The car receiving structure 9 is rotatable about a support shaft 12 with respect to a support 10. Each connection shaft 93 in the car receiving structure 9 is parallel to the support shaft 12.

The state of the car receiving structure 9 can be changed between a threshold reaching state and a retracted state. Note that FIGS. 2 and 3 show the pair of work auxiliary devices 8 when the car receiving structure 9 is in the threshold reaching state.

When the car receiving structure 9 is in the threshold reaching state, the car receiving structure 9 has reached the landing sill 23 from the support 10. Specifically, when the car receiving structure 9 is in the threshold reaching state, the position is closer to the center of the hoistway 1 than the position of the opposite end of the car receiving structure 9 to the sill in the width direction of the hoistway 1. The threshold side end of the big car receiving structure 9 reaches the landing threshold 23 of the lowest floor. As a result, when the car receiving structure 9 is in the threshold reaching state, when the hoistway 1 is viewed from above, the car receiving structure 9 can be moved in both the width direction of the hoistway 1 and the depth direction of the hoistway 1. 9 is inclined. Furthermore, when the hoistway 1 is viewed from above, in the work auxiliary device 8, as shown in FIG. It overlaps with the area of car 2.

When the car receiving structure 9 is in the retracted state, the car receiving structure 9 is removed from the landing sill 23. When the hoistway 1 is viewed from above, in the work auxiliary device 8, the car receiving structure 9 moves out of the area of the car 2 by changing the state of the car receiving structure 9 to the retracted state.

FIG. 4 is an enlarged view showing the work assisting device 8 of FIG. 2. FIG. 5 is an enlarged view showing the work assisting device 8 when the car receiving structure 9 in FIG. 4 is in the retracted state. As shown in FIG. 4, the car receiving structure 9 is in a state where it reaches the threshold as the car receiving structure 9 extends. Further, as shown in FIG. 5, the state of the car receiving structure 9 becomes a retracted state as the car receiving structure 9 contracts.

Here, along the respective longitudinal directions of the first link member 91 and the second link member 92 from a connecting shaft 93 that connects the first link member 91 and the second link member 92, which are two adjacent link members, to each other. The angle formed by the two extending straight lines is defined as the inter-link angle. At this time, the car receiving structure 9 is expanded by the rotation of the first link member 91 and the second link member 92 in a direction in which the inter-link angle approaches 180°. When the car receiving structure 9 is expanded, as shown in FIG. 4, the plurality of first link members 91 and the plurality of second link members 92 are aligned on the same straight line, and the car receiving structure 9 is extended.

The car receiving structure 9 is folded by the rotation of the first link member 91 and the second link member 92 in a direction in which the inter-link angle becomes smaller. When the car receiving structure 9 is folded, as shown in FIG. 5, the connecting portion between the first link member 91 and the second link member 92 is bent, and the car receiving structure 9 is contracted.

A projection 94 is provided on the first link member 91 where the threshold side end portion of the car receiving structure 9 is formed. The protrusion 94 protrudes from the first link member 91 in a direction perpendicular to both the longitudinal direction of the first link member 91 and the width direction of the car receiving structure 9 . When the car receiving structure 9 is in the threshold reaching state, the projection 94 projects downward from the first link member 91. Further, when the car receiving structure 9 is in the threshold reaching state, the protrusion 94 fits into the threshold groove 24 in the landing sill 23 of the lowest floor. Thereby, the car receiving structure 9 is fixed to the landing sill 23.

The cable body 11 is connected to the car receiving structure 9. In this embodiment, the cable body 11 is connected to a first link member 91 in which the threshold side end of the car receiving structure 9 is formed. The cable body 11 is also connected to a landing sill 23 on the lowest floor. The cable body 11 hangs down from the car receiving structure 9 to the landing sill 23. Each of the pair of work auxiliary devices 8 is provided with sufficient power to prevent the car 2 from interfering with the cable body 11 even if the car 2 stops at the lowest floor when the car receiving structure 9 is in the retracted state. The length of the cable body 11 is ensured. As the cable member 11, a wire, rope, chain, or the like is used.

Next, a method of handling the pair of work auxiliary devices 8 will be explained. A work assist device 8 is attached to each of the pair of car guide rails 6 in advance. During normal operation of the elevator, the car receiving structure 9 in each of the pair of work auxiliary devices 8 is in the retracted state. In this state, even if the car 2 and the counterweight 3 move within the hoistway 1, the work auxiliary devices 8 do not interfere with the car 2 and the counterweight 3.

When performing maintenance work on elevator equipment installed at the bottom of the hoistway 1, a worker opens the landing entrance 21 on the lowest floor. The worker also moves the car 2 above the lowest floor. Thereby, a worker at the landing on the lowest floor can pull each cable member 11 connected to the landing sill 23. Thereafter, the worker brings the sill -side end of the car receiving structure 9 close to the landing sill 23 while pulling the cable body 11 using each work auxiliary device 8 . As a result, the car receiving structure 9 extends, and the sill-side end of the car receiving structure 9 reaches the landing sill 23. In this way, in each work assisting device 8, the state of the car receiving structure 9 reaches the threshold state.

Thereafter, the worker fits the protrusion 94 of the car receiving structure 9 into the sill groove 24 of the landing sill 23 in each work auxiliary device 8 . As a result, each car receiving structure 9 is fixed to the landing sill 23. When the car receiving structure 9 is in the threshold reaching state, when the car 2 attempts to move below the lowest floor, the car 2 interferes with the car receiving structure 9, causing the car to reach the bottom of the hoistway 1. 2 is prevented from entering. Thereby, a work space for the worker at the bottom of the hoistway 1 is secured.

Thereafter, the worker enters the bottom of the hoistway 1 through the landing entrance 21 on the lowest floor and performs maintenance work on the elevator equipment.

After the maintenance work on the elevator equipment is completed, the worker moves from the bottom of the hoistway 1 to the lowest floor landing through the lowest floor landing entrance 21. Thereafter, the worker removes the protrusion 94 of each work auxiliary device 8 from the sill groove 24 of the landing sill 23, and pushes the sill side end of each car receiving structure 9 toward the support 10 with a tool such as a stick. . As a result, in each work auxiliary device 8, the car receiving structure 9 contracts, and the state of the car receiving structure 9 becomes the retracted state. After this, the worker closes the landing entrance/exit 21 on the lowest floor. This completes the maintenance work on the elevator equipment.

In such a work auxiliary device 8, the cable body 11 connected to the car receiving structure 9 is connected to the landing sill 23. Further, the state of the car receiving structure 9 can be changed between a threshold reaching state and a retracted state. Therefore, by the operator pulling the cable member 11 from the landing, the state of the car receiving structure 9 can be changed from the retracted state to the threshold reaching state. Thereby, the car 2 can be prevented from entering the bottom of the hoistway 1 by the car receiving structure 9. Therefore, a work space for the worker at the bottom of the hoistway 1 can be secured without the worker entering the bottom of the hoistway 1. For this reason, it is no longer necessary for the worker to enter the bottom of the hoistway 1 to secure a work space for the worker, and the work burden on the worker at the bottom of the hoistway 1 can be reduced. .

Further, the state of the car receiving structure 9 becomes a threshold reaching state when the car receiving structure 9 extends, and becomes a retracted state when the car receiving structure 9 contracts. Therefore, it is possible to reduce the space in which the car receiving structure 9 is placed when it is in the retracted state. Thereby, the space within the hoistway 1 can be effectively utilized.

Further, the car receiving structure 9 includes a plurality of first link members 91 and a plurality of second link members 92 connected in series. Furthermore, two adjacent link members, a first link member 91 and a second link member 92, are rotatably connected around a connecting shaft 93. Therefore, the car receiving structure 9 can be expanded and contracted by the rotation of the first link member 91 and the second link member 92, and the structure of the car receiving structure 9 can be simplified.

Embodiment 2.
FIG. 6 is a side view showing the work assisting device according to the second embodiment. Each work auxiliary device 8 has a restoring mechanism 95. The restoring mechanism 95 is a mechanism that applies force to the car receiving structure 9 in a direction in which the car receiving structure 9 contracts. The restoring mechanism 95 is provided in the car receiving structure 9.

The restoration mechanism 95 has a plurality of unit mechanism sections 951. Each unit mechanism section 951 generates a force in a direction that brings two adjacent link members, the first link member 91 and the second link member 92, closer to each other. That is, the force of the unit mechanism section 951 is applied to the first link member 91 and the second link member 92 which are adjacent to each other in the direction in which the car receiving structure 9 is folded and contracted.

Each unit mechanism section 951 has an elastic body 951a, a first connection section 951b, and a second connection section 951c.

The first connecting portion 951b is fixed to the first link member 91. The second connecting portion 951c is fixed to the second link member 92. In this embodiment, the first connecting portion 951b is fixed to the longitudinally intermediate portion of the first link member 91, and the second connecting portion 951c is fixed to the longitudinally intermediate portion of the second link member 92. There is. Further, in this embodiment, the first connecting portion 951b protrudes from the first link member 91 in a direction perpendicular to both the longitudinal direction of the first link member 91 and the direction along the connecting shaft 93. Furthermore, in this embodiment, the second connecting portion 951c is fixed in the space between the pair of link plates 921. Pins are used as the first connection portion 951b and the second connection portion 951c, respectively.

One end portion of the elastic body 951a is connected to the first connecting portion 951b. The other end of the elastic body 951a is connected to a second connecting portion 951c. The elastic body 951a generates an elastic restoring force in the direction in which the first connecting portion 951b and the second connecting portion 951c approach each other. As a result, each unit mechanism section 951 applies the elastic restoring force of the elastic body 951a to the first link member 91 and the second link member 95 in the direction in which the inter-link angle between the first link member 91 and the second link member 92 becomes smaller. It is added to member 92. In this embodiment, a spring is used as the elastic body 951a.

During normal operation of the elevator, the state of the car receiving structure 9 in each of the pair of work auxiliary devices 8 is maintained in the retracted state by the force of the restoring mechanism 95. In each work auxiliary device 8, when changing the state of the car receiving structure 9 from the retracted state to the threshold reaching state, the worker at the landing pulls the cable 11, thereby moving the car against the force of the restoring mechanism 95. The receiving structure 9 is unfolded. As a result, the car receiving structure 9 extends, and the sill-side end of the car receiving structure 9 reaches the landing sill 23. In this way, the state of the car receiving structure 9 reaches the threshold state.

In each work auxiliary device 8, when returning the state of the car receiving structure 9 from the threshold reaching state to the retracted state, the worker removes the protrusion 94 of the car receiving structure 9 from the sill groove 24 of the landing sill 23, and The force of pulling the strip 11 is weakened. As a result, the car receiving structure 9 is automatically folded and contracted by the force of the restoring mechanism 95. In this way, the state of the car receiving structure 9 becomes the retracted state. The other configurations in this embodiment are the same as in the first embodiment.

In such a work auxiliary device 8, the force of the restoring mechanism 95 is applied to the car receiving structure 9 in the direction in which the car receiving structure 9 contracts. Therefore, the car receiving structure 9 can be contracted by the force of the restoring mechanism 95 without pushing the car receiving structure 9 toward the support 10. Thereby, the state of the car receiving structure 9 can be easily changed from the threshold reaching state to the retracted state.

Embodiment 3.
FIG. 7 is an enlarged view showing a state in which the car receiving structure of the work assisting device according to the third embodiment is fixed to the landing threshold. A through hole 911 is provided in the first link member 91 in which the threshold side end of the car receiving structure 9 is formed. The through hole 911 passes through the first link member 91 in a direction perpendicular to both the longitudinal direction of the first link member 91 and the width direction of the car receiving structure 9 .

A screw hole 231 is provided in the landing sill 23. The screw hole 231 reaches from the bottom surface of the sill groove 24 to the lower surface of the landing sill 23.

The work auxiliary device 8 has a fixing bolt 96. The fixing bolt 96 is a fixture that fixes the car receiving structure 9 to the landing threshold 23 when the car receiving structure 9 is in the threshold reaching state.

The threaded portion of the fixing bolt 96 is passed through the through hole 911. Further, the threaded portion of the fixing bolt 96 is attached to the threaded hole 231. The car receiving structure 9 is fixed to the landing sill 23 by tightening the threaded portion of a fixing bolt 96 passed through the through hole 911 into the screw hole 231. When the car receiving structure 9 is fixed to the landing sill 23 by the fixing bolts 96, the sill-side end of the car receiving structure 9 overlaps the top surface of the landing sill 23. In this embodiment, the car receiving structure 9 is not provided with a protrusion 94 that fits into the sill groove 24 .

The car receiving structure 9 is removed from the landing sill 23 when the fixing bolts 96 are removed from the screw holes 231. The other configurations in this embodiment are the same as in the first embodiment.

In such a work auxiliary device 8, the car receiving structure 9 is fixed to the landing sill 23 by the fixing bolt 96 when the car receiving structure 9 is in the threshold reaching state. Therefore, the car receiving structure 9 can be more reliably fixed to the landing sill 23, and the car receiving structure 9 can be more reliably prevented from unintentionally coming off from the landing sill 23.

Embodiment 4.
FIG. 8 is an enlarged view showing a state in which the car receiving structure of the work assisting device according to the fourth embodiment is fixed to the landing threshold. Each work auxiliary device 8 has a gripper 97 . The gripping tool 97 is a fixture that fixes the car receiving structure 9 to the landing threshold 23 when the car receiving structure 9 is in the threshold reaching state. The gripping tool 97 includes a bolt 971 and a pressing member 972.

The pressing member 972 is a plate-shaped member. The holding member 972 is provided with a screw hole 973. The screw hole 973 penetrates the holding member 972 in the thickness direction of the holding member 972. The pressing member 972 overlaps the lower surface of the landing sill 23. The first link member 91, in which the sill-side end of the car receiving structure 9 is formed, overlaps the upper surface of the landing sill 23. A part of the landing sill 23 is sandwiched between the first link member 91 where the sill-side end of the car receiving structure 9 is formed and the holding member 972.

A through hole 912 is provided in the first link member 91 in which the threshold side end of the car receiving structure 9 is formed. The through hole 912 passes through the first link member 91 in a direction perpendicular to both the longitudinal direction of the first link member 91 and the width direction of the car receiving structure 9 .

The threaded portion of the bolt 971 is passed through the through hole 912. Further, the threaded portion of the bolt 971 is attached to a threaded hole 973. The landing sill 23 is held between the first link member 91 and the holding member 972 by tightening the threaded portion of the bolt 971 passed through the through hole 912 into the screw hole 973. Thereby, the car receiving structure 9 is fixed to the landing sill 23. That is, the car receiving structure 9 is fixed to the landing sill 23 by being held between the car receiving structure 9 and the holding member 972. When the car receiving structure 9 is fixed to the landing sill 23, the protrusion 94 fits into the sill groove 24.

The car receiving structure 9 is removed from the landing sill 23 by loosening the bolts 971 into the screw holes 973. The other configurations in this embodiment are the same as in the first embodiment.

In such a work auxiliary device 8, the car receiving structure 9 is fixed to the landing sill 23 by the gripping tool 97 when the car receiving structure 9 is in the threshold reaching state. Therefore, the car receiving structure 9 can be more reliably fixed to the landing sill 23, and the car receiving structure 9 can be more reliably prevented from unintentionally coming off the landing sill 23. Further, it is possible to eliminate the need for processing to provide a screw hole in the landing sill 23 for attaching a bolt.

Further, the protrusion 94 of the car receiving structure 9 fits into the sill groove 24 with the landing sill 23 being held between the car receiving structure 9 and the pressing member 972. Therefore, the projection 94 can prevent the car receiving structure 9 from sliding with respect to the landing sill 23 in the direction away from the landing sill 23. Thereby, the state in which the car receiving structure 9 is fixed to the landing sill 23 can be maintained more reliably.

Embodiment 5.
FIG. 9 is a top view showing the work assisting device according to the fifth embodiment. The work assisting device 8 has a mounting member 13. The attachment member 13 is attached to the support 10. Specifically, the attachment member 13 is attached to the inclined plate 102 of the support 10 by the support shaft 12. The support shaft 12 is perpendicular to the inclined plate 102. Further, the support shaft 12 is arranged horizontally. The mounting member 13 is rotatable about the support shaft 12 with respect to the support 10 .

The opposite end of the car receiving structure 9 to the sill is attached to the inclined plate 102 via an attachment member 13. The opposite end of the car receiving structure 9 to the sill is connected to a mounting member 13 by a mounting shaft 14 . The mounting shaft 14 is a shaft having an axis perpendicular to a straight line parallel to each connecting shaft 93. The mounting shaft 14 is perpendicular to the support shaft 12. The car receiving structure 9 is rotatably connected to the mounting member 13 about a mounting shaft 14 . In this embodiment, the link member on which the opposite end of the car receiving structure 9 is formed is the first link member 91, and the link member on which the end of the car receiving structure 9 on the sill side is formed is the first link member 91. The first link member 91 also serves as the first link member 91. Furthermore, in this embodiment, the attachment shaft 14 is arranged along the longitudinal direction of the first link member 91 where the opposite end of the car receiving structure 9 is formed.

The projections 94 protrude from the first link member 91 in which the threshold side end of the car receiving structure 9 is formed in a direction parallel to each connecting shaft 93 . As a result, when the car receiving structure 9 rotates around the attachment shaft 14 and the projections 94 become horizontal, each connecting shaft 93 of the car receiving structure 9 also becomes horizontal. Further, when the car receiving structure 9 rotates around the attachment shaft 14 and the protrusion 94 faces downward, each connecting shaft 93 of the car receiving structure 9 is arranged along the vertical direction.

FIG. 10 is a top view showing a state in which the projection 94 of the car receiving structure 9 shown in FIG. 9 is fitted into the sill groove 24 of the landing sill 23. When the car receiving structure 9 is in the threshold reaching state and the projection 94 of the car receiving structure 9 fits into the threshold groove 24 of the landing sill 23, the projection 94 faces downward. Thereby, each connection shaft 93 of the car receiving structure 9 is arranged along the vertical direction.

In each work auxiliary device 8, when changing the state of the car support structure 9 from the retracted state to the threshold reaching state, the car support structure 9 is deployed by a worker at the landing pulling the cable member 11. At this time, the car receiving structure 9 is unfolded with each connecting shaft 93 arranged horizontally. As a result, the car receiving structure 9 extends, and the sill-side end of the car receiving structure 9 reaches the landing sill 23. In this way, the state of the car receiving structure 9 reaches the threshold state.

Thereafter, the operator rotates the car receiving structure 9 relative to the mounting member 13 about the mounting shaft 14 until the protrusion 94 faces downward. Thereby, as shown in FIG. 10, each connection shaft 93 is arranged along the vertical direction. After this, the protrusion 94 is fitted into the threshold groove 24. Thereby, the car receiving structure 9 is fixed to the landing sill 23.

In each work auxiliary device 8, when returning the state of the car receiving structure 9 from the threshold reaching state to the retracted state, the operator removes the protrusion 94 from the sill groove 24 and holds the car receiving structure until the protrusion 94 becomes horizontal. The body 9 is rotated about the mounting shaft 14 with respect to the mounting member 13. Thereafter, the operator pushes the car receiving structure 9 toward the support 10. As a result, the car receiving structure 9 is folded and contracted. In this way, the state of the car receiving structure 9 becomes the retracted state. The other configurations in this embodiment are the same as in the first embodiment.

In such a work auxiliary device 8, the car receiving structure 9 is rotatably connected to the mounting member 13 about the mounting shaft 14 having an axis perpendicular to a straight line parallel to each coupling shaft 93. Therefore, each connecting shaft 93 can be arranged along the vertical direction when the car receiving structure 9 is in the threshold reaching state. Thereby, the rigidity of the car support structure 9 against loads along the vertical direction can be increased. Therefore, even if the car receiving structure 9 receives the load of the car 2 vertically downward from above, the car receiving structure 9 can be made difficult to bend, and the worker at the bottom of the hoistway 1 can Work space can be secured more reliably.

Embodiment 6.
FIG. 11 is a side view showing the work assisting device according to the sixth embodiment. FIG. 12 is a sectional view taken along line XII-XII in FIG. 11. 11 and 12 show the work assisting device 8 when the car receiving structure 9 is in the threshold reaching state. In each of the pair of work auxiliary devices 8, the car receiving structure 9 is movable relative to the support 10. In this embodiment, the car receiving structure 9 is movable in the horizontal direction with respect to the support 10. The support 10 is fixed within the hoistway 1 in a state away from the inner wall surface of the hoistway 1. The support 10 is arranged between the back surface of the car guide rail 6 and the inner wall surface of the hoistway 1 in the width direction of the hoistway 1 .

The support 10 includes a pair of opposing plates 105, a fixing plate 106, and a fixing pin 107.

The fixed plate 106 overlaps the back surface of the car guide rail 6. Thereby, the fixed plate 106 is perpendicular to the width direction of the hoistway 1. Furthermore, the fixing plate 106 is removably fixed to the car guide rail 6 by a rail clip (not shown).

A pair of opposing plates 105 are fixed to a fixed plate 106. Further, the pair of opposing plates 105 are opposed to each other in the vertical direction. A space is formed between the pair of facing plates 105, through which the car receiving structure 9 passes.

As shown in FIG. 11, each of the pair of facing plates 105 has a fixed side facing portion 105a and an open side facing portion 105b. In each of the pair of opposing plates 105, the open side opposing portion 105b projects from the fixed side opposing portion 105a toward the landing sill 23 side.

When looking at the support 10 along the width direction of the hoistway 1, the fixed plate 106 is arranged only in the range where the fixed side facing parts 105a face each other, and the respective sill side facing parts 105b face each other. Not placed in range. Only the fixed side opposing portions 105a of each of the pair of opposing plates 105 are fixed to the fixed plate 106.

The fixing pin 107 is fixed between the open-side opposing portions 105b of each of the pair of opposing plates 105. Further, the fixing pin 107 is arranged along the vertical direction.

The car receiving structure 9 is a long member having an axis. Here, the direction perpendicular to the axis of the car receiving structure 9 is defined as the width direction of the car receiving structure 9. Further, a direction perpendicular to both the direction along the axis of the car support structure 9 and the width direction of the car support structure 9 is defined as the thickness direction of the car support structure 9. At this time, the car receiving structure 9 is arranged so that the thickness direction of the car receiving structure 9 coincides with the vertical direction.

The car receiving structure 9 includes a main body member 98, a retaining member 99, and an extension member 100.

Each of the main body member 98 and the extension member 100 is a member extending along the axis of the car receiving structure 9. Thereby, the longitudinal direction of each of the main body member 98 and the extension member 100 coincides with the direction along the axis of the car receiving structure 9. One end of the extension member 100 is fixed to one end of the main body member 98. The other end of the main body member 98 is the opposite end of the car receiving structure 9 to the sill. The other end of the extension member 100 is the threshold side end of the car receiving structure 9.

The main body member 98 has a pair of elongated plates 981. The pair of elongated plates 981 are plates extending along the axis of the car receiving structure 9. The pair of long plates 981 are opposed to each other in the width direction of the car receiving structure 9.

The retaining member 99 is fixed to the end of the car receiving structure 9 on the side opposite to the threshold. Further, the retaining member 99 is fixed between a pair of elongated plates 981. In this embodiment, a pin that connects the pair of long plates 981 to each other is used as the retaining member 99. The retaining member 99 is arranged along the width direction of the car receiving structure 9.

A protrusion 94 is provided at the end of the car receiving structure 9 on the threshold side. The projection 94 projects downward from the extension member 100 along the thickness direction of the car receiving structure 9. The cable body 11 connected to the landing sill 23 on the lowest floor is connected to an extension member 100, as shown in FIG.

A portion of the car receiving structure 9 is passed through the space between the pair of facing plates 105. Thereby, the car receiving structure 9 is sandwiched between the pair of opposing plates 105 in the thickness direction of the car receiving structure 9. The car receiving structure 9 is movable relative to the support 10 in a direction along the pair of opposing plates 105, that is, in a horizontal direction, while being guided by each of the pair of opposing plates 105.

The fixing pin 107 is passed between a pair of elongated plates 981. Further, the fixing pin 107 is slidable between the pair of elongated plates 981 in the longitudinal direction of the main body member 98. Thereby, the car receiving structure 9 is movable relative to the support 10 while being slid relative to the fixing pin 107 in a direction along the axis of the car receiving structure 9. The range in which the car receiving structure 9 can slide relative to the fixing pin 107 is the range between the retaining member 99 and the extension member 100. Further, the car receiving structure 9 is also rotatable with respect to the support 10 around the fixing pin 107.

In each work auxiliary device 8, the state of the car receiving structure 9 changes between the threshold reaching state and the retracted state as the car receiving structure 9 moves relative to the support 10.

When the car receiving structure 9 is in the threshold reaching state, the main body member 98 is supported by the support 10 and the extension member 100 has reached the landing threshold 23. Further, when the car receiving structure 9 is in the threshold reaching state, the protrusion 94 fits into the threshold groove 24 of the landing sill 23.

FIG. 13 is a sectional view showing each work assisting device 8 when the car receiving structure 9 in FIG. 12 is in the retracted state. When the car receiving structure 9 is in the retracted state, the car receiving structure 9 is arranged in a space between the back surface of the car guide rail 6 and the inner wall surface of the hoistway 1. Further, when the car receiving structure 9 is in the retracted state, a part of the main body member 98 is accommodated in the space between the pair of opposing plates 105, and the car receiving structure 9 is moved in the depth direction of the hoistway 1. is located along. Further, when the car receiving structure 9 is in the retracted state, a portion of the main body member 98 protrudes from the support 10 to the side farther from the support 10 with respect to the landing sill 23.

When changing the state of the car receiving structure 9 from the retracted state to the threshold reaching state, the car receiving structure 9 is moved relative to the support 10 in a direction approaching the landing sill 23 by pulling the cable body 11 from the landing. . At this time, the car receiving structure 9 rotates relative to the support 10 about the fixing pin 107 while moving relative to the support 10 in the direction in which the retaining member 99 approaches the fixing pin 107. As a result, the extension member 100 of the car receiving structure 9 reaches the landing threshold 23. In this way, the state of the car receiving structure 9 reaches the threshold state. Thereafter, the protrusion 94 of the extension member 100 is fitted into the sill groove 24.

In addition, when changing the state of the car receiving structure 9 from the threshold reaching state to the retracted state, after removing the protrusion 94 from the sill groove 24, use a tool such as a stick to move the car receiving structure in a direction away from the landing sill 23. Press 9. Thereby, the car receiving structure 9 moves relative to the support 10 toward the space between the back surface of the car guide rail 6 and the inner wall surface of the hoistway 1. At this time, the car receiving structure 9 rotates relative to the support 10 about the fixing pin 107 while moving relative to the support 10 in the direction in which the extension member 100 approaches the fixing pin 107. As a result, a portion of the main body member 98 protrudes from the support 10 to a side farther from the support 10 with respect to the landing sill 23, and a portion of the main body member 98 fits into the space between the pair of opposing plates 105. . Thereby, the state of the car receiving structure 9 becomes the retracted state. The other configurations in this embodiment are the same as in the first embodiment.

In such a work auxiliary device 8, as the car receiving structure 9 moves relative to the support 10, the state of the car receiving structure 9 changes between the threshold reaching state and the retracted state. Therefore, there is no need to expand or contract the car receiving structure 9. Thereby, the structure of the car receiving structure 9 can be simplified, and the work assisting device 8 can be manufactured easily. Further, since there is no need to expand and contract the car receiving structure 9, the rigidity of the car receiving structure 9 can be easily increased.

In the second embodiment, the restoring mechanism 95 is applied to the car receiving structure 9 in the first embodiment. However, the restoring mechanism 95 may be applied to the car receiving structure 9 in the third to fifth embodiments.

Furthermore, in the third embodiment, a configuration in which the car receiving structure 9 is fixed to the landing sill 23 with fixing bolts 96 is applied to the car receiving structure 9 in the first embodiment. However, the structure in which the car receiving structure 9 is fixed to the landing sill 23 by the fixing bolt 96 may be applied to the car receiving structure 9 in the second, fifth, and sixth embodiments.

Further, in the fourth embodiment, a configuration in which the car receiving structure 9 is fixed to the landing sill 23 by a gripping tool 97 is applied to the car receiving structure 9 in the first embodiment. However, the configuration in which the car receiving structure 9 is fixed to the landing sill 23 by the gripping tool 97 may be applied to the car receiving structure 9 in the second, fifth, and sixth embodiments.

Further, in the first to fifth embodiments, the second link member 92 includes a pair of link plates 921. However, the configuration of the second link member 92 is not limited to this. For example, the second link member 92 may include only one link plate 921. Even in this case, the first link member 91 and the second link member 92 can be connected to each other by the connecting shaft 93.

Further, in the first to fourth embodiments, a link member connected body in which a plurality of first link members 91 and a plurality of second link members 92 are connected in series is used as the car receiving structure 9. However, the car receiving structure 9 is not limited to a link member connection body. For example, a slide member connected body in which a plurality of slide members are connected in series may be used as the car receiving structure. In this case, the car receiving structure expands and contracts by sliding the plurality of slide members. For example, a plurality of cylindrical members are used as the plurality of slide members. When a plurality of cylindrical members are used as a plurality of slide members, the other cylindrical member is slidably inserted inside one of the two cylindrical members adjacent to each other.

Further, in each of the embodiments described above, a pair of work auxiliary devices 8 are provided within the hoistway 1. However, the number of work auxiliary devices 8 is not limited to this. For example, the number of work auxiliary devices 8 may be reduced to one. In this case, the support 10 is fixed to only one of the pair of car guide rails 6.

Further, in each of the above embodiments, the support 10 is fixed to the car guide rail 6. However, the object to which the support 10 is fixed is not limited to this. For example, the support 10 may be fixed to the inner wall surface of the hoistway 1.

Furthermore, in each of the above embodiments, the car receiving structure 9 is arranged at a height that matches the floor surface of the lowest floor. However, the position of the car receiving structure 9 in the height direction of the hoistway 1 is not limited to this. For example, the car receiving structure 9 may be arranged at a height that matches the floor surface of the floor one level higher than the lowest floor.

1 hoistway, 2 car, 9 car receiving structure, 10 support, 11 cable body, 13 mounting member, 14 mounting shaft, 23 landing sill, 91 first link member (link member), 92 second link member ( link member), 93 connecting shaft, 95 restoring mechanism, 96 fixing bolt (fixing tool), 97 gripping tool (fixing tool).

Claims (7)

a support fixed within a hoistway in which the car moves;
a car receiving structure supported by the support and disposed between the bottom of the hoistway and the car in the height direction of the hoistway;
and a cable body connected to the car receiving structure and connected to the landing sill,
The support is configured to be fixed at a position outside the area of the car when the hoistway is viewed from above,
The state of the car receiving structure is changeable between a threshold reaching state in which the car receiving structure reaches the landing threshold from the support and a retracted state in which the car receiving structure comes off the landing threshold. and
When the hoistway is viewed from above, the state of the car receiving structure reaches the threshold state, so that a part of the car receiving structure overlaps with the area of the car, and the state of the car receiving structure changes. An elevator work auxiliary device in which the car receiving structure is removed from the area of the car by entering the retracted state. The elevator work assistance device according to claim 1, further comprising a fixture that fixes the car receiving structure to the landing threshold when the car receiving structure is in the threshold reaching state. The elevator according to claim 1 or 2, wherein the state of the car receiving structure is the threshold reaching state when the car receiving structure is extended, and the retracted state when the car receiving structure is contracted. work aids. The elevator work assistance device according to claim 3, further comprising a restoring mechanism that applies force to the car support structure in a direction in which the car support structure contracts. The car receiving structure has a plurality of link members connected in series,
The elevator work assistance device according to claim 3 or 4, wherein the two link members adjacent to each other are rotatably connected to each other about a connecting shaft. a mounting member attached to the support;
6. The elevator work auxiliary device according to claim 5, wherein the car receiving structure is rotatably connected to the attachment member about an attachment shaft having an axis perpendicular to a straight line parallel to the connection axis. The car receiving structure is movable with respect to the support,
The elevator according to claim 1 or 2, wherein the state of the car receiving structure changes between the threshold reaching state and the retracted state by moving the car receiving structure with respect to the support. work aids.

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