CN117320990A - Operation auxiliary device for elevator - Google Patents
Operation auxiliary device for elevator Download PDFInfo
- Publication number
- CN117320990A CN117320990A CN202180098248.4A CN202180098248A CN117320990A CN 117320990 A CN117320990 A CN 117320990A CN 202180098248 A CN202180098248 A CN 202180098248A CN 117320990 A CN117320990 A CN 117320990A
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- Prior art keywords
- car
- supporting structure
- sill
- car supporting
- state
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- 238000010168 coupling process Methods 0.000 claims description 135
- 238000005859 coupling reaction Methods 0.000 claims description 135
- 230000008878 coupling Effects 0.000 claims description 134
- 230000008602 contraction Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 7
- 230000002265 prevention Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- Elevator Door Apparatuses (AREA)
Abstract
In an operation support device for an elevator, a car supporting structure is disposed between the bottom of a hoistway and a car in the height direction of the hoistway. The rope-shaped body is connected with the car bearing structure body and is connected with the landing sill. The state of the car supporting structure can be changed between a sill reaching state in which the car supporting structure reaches the landing sill from the support and a retracted state in which the car supporting structure is disengaged from the landing sill. When the hoistway is viewed from above, the car support structure is brought into the sill-reached state, a part of the car support structure overlaps with the area of the car, and the car support structure is brought into the retracted state, whereby the car support structure is separated from the area of the car.
Description
Technical Field
The present disclosure relates to an operation support device for an elevator provided in a hoistway.
Background
Conventionally, an elevator is known in which a column is provided at the bottom of a hoistway in order to ensure a working space for an operator at the bottom of the hoistway. The support posts lie across the bottom of the hoistway when the elevator is in normal operation. The support post is erected at the bottom of the hoistway by an operator during elevator maintenance. When the car moves to a position lower than the lowermost floor in a state where the supporting column stands on the bottom of the hoistway, the car contacts the supporting column, and the downward movement of the car is prevented (for example, refer to patent document 1).
Prior art literature
Patent literature
Patent document 1: international publication No. 99/47447
Disclosure of Invention
Problems to be solved by the invention
However, in the conventional elevator shown in patent document 1, an operator needs to enter the bottom of the hoistway to erect the supporting column at the time of elevator maintenance. Therefore, the work load of the operator at the bottom of the hoistway increases.
The present disclosure has been made to solve the above-described problems, and an object thereof is to provide an operation support device for an elevator that can reduce the load on the bottom of a hoistway by an operator.
Means for solving the problems
The operation support device for an elevator of the present disclosure comprises: a support fixed in a hoistway in which the car moves; a car supporting 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 rope-like body connected to the car supporting structure and connected to the landing sill, wherein the support is fixed to a position separated from the area of the car when the hoistway is viewed from above, the state of the car supporting structure is changeable between a sill-reached state in which the car supporting structure reaches the landing sill from the support and a retracted state in which the car supporting structure is separated from the landing sill, and when the hoistway is viewed from above, the state of the car supporting structure is set to the sill-reached state, a part of the car supporting structure overlaps with the area of the car, and the state of the car supporting structure is set to the retracted state, whereby the car supporting structure is separated from the area of the car.
Effects of the invention
According to the operation support device for the elevator, the operation load of an operator at the bottom of a hoistway can be reduced.
Drawings
Fig. 1 is a side view showing an elevator according to embodiment 1.
Fig. 2 is an enlarged view illustrating the bottom of the hoistway of fig. 1.
Fig. 3 is a cross-sectional view taken along line III-III of fig. 2.
Fig. 4 is an enlarged view illustrating the work support device of fig. 2.
Fig. 5 is an enlarged view showing the work support device in the state of the car supporting structure of fig. 4 in the retracted state.
Fig. 6 is a side view showing a work support device according to embodiment 2.
Fig. 7 is an enlarged view showing a state in which the car supporting structure of the work support device according to embodiment 3 is fixed to the landing sill.
Fig. 8 is an enlarged view showing a state in which the car supporting structure of the work support device according to embodiment 4 is fixed to the landing sill.
Fig. 9 is a plan view showing a work support device according to embodiment 5.
Fig. 10 is a plan view showing a state in which a protrusion of the car supporting structure of fig. 9 is fitted into a sill groove of a landing sill.
Fig. 11 is a side view showing a work support device according to embodiment 6.
Fig. 12 is a cross-sectional view taken along line XII-XII of fig. 11.
Fig. 13 is a cross-sectional view showing each work support device when the car supporting structure of fig. 12 is in a retracted state.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1.
Fig. 1 is a side view showing an elevator according to embodiment 1. Fig. 2 is an enlarged view illustrating the bottom of the hoistway of fig. 1. Fig. 3 is a cross-sectional view taken along line III-III of 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 in the hoistway 1 in the height direction of the hoistway 1. A hoisting machine 4 is provided at an upper portion in the hoistway 1. The hoisting machine 4 generates a driving force for moving the car 2 and the counterweight 3.
The hoisting machine 4 has a drive sheave 41. A plurality of main ropes 5 as suspension bodies are wound around the drive sheave 41. The car 2 and the counterweight 3 are suspended in the hoistway 1 by means of a plurality of main ropes 5. The car 2 and the counterweight 3 move in the height direction of the hoistway 1 within the hoistway 1 by rotation of the drive sheave 41. In addition, in fig. 1, a plurality of main ropes 5 are shown as one main rope 5. Instead of ropes, belts may also be used as suspension bodies.
A landing entrance 21 is provided at each floor of the building. The hoistway 1 is opened to a landing through a landing entrance 21 at each floor. Here, the lateral direction of the hoistway 1 when the hoistway 1 is viewed from the landing is referred to as the width direction of the hoistway 1. The direction perpendicular to both the width direction and the vertical direction of the hoistway 1 is referred to as the depth direction of the hoistway 1. At this time, the front width direction of the landing entrance 21 at each floor coincides with the width direction of the hoistway 1.
A landing sill 23 is disposed along the front width direction of the landing doorway 21 at the lower portion of each landing doorway 21 provided at each floor. The landing sill 23 is fixed to the floor of each floor. As shown in fig. 2 and 3, a sill groove 24 is provided on the upper surface of the landing sill 23 along the front width direction of the landing entrance 21. A pair of landing doors 22 are inserted into the sill groove 24 at their respective lower ends. At each floor, the landing entrance 21 is opened and closed by a pair of landing doors 22 moving in the front width direction of the landing entrance 21.
As shown in fig. 3, a pair of car guide rails 6 and a pair of counterweight guide rails 7 are provided in the hoistway 1. The pair of car guide rails 6 face each other in the width direction of the hoistway 1. The car 2 is disposed between a pair of car guide rails 6. The pair of counterweight guide rails 7 face 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 disposed at a position closer to the landing entrance 21 than the counterweight 3. Therefore, the pair of car guide rails 6 is disposed closer to the landing entrance 21 than the pair of counterweight guide rails 7. When the car 2 and the counterweight 3 move in 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.
An elevator equipment, not shown, is provided at the bottom of the hoistway 1. Examples of the elevator equipment include a car buffer and a counterweight buffer. When an operator performs maintenance work on elevator equipment provided at the bottom of the hoistway 1, the work support device 8 of the elevator is used to ensure a work space of the operator 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 existing below the lower end portion of the car 2 when the car 2 stops at the lowest floor, among the spaces in the hoistway 1.
A pair of work support devices 8 is provided in the hoistway 1. The pair of work support devices 8 are provided between the bottom of the hoistway 1 and the car 2 in the height direction of the hoistway 1. In the present embodiment, one work support device 8 of the pair of work support devices 8 is attached to one car guide rail 6, and the other work support device 8 is attached to the other car guide rail 6. The structure of one work assist device 8 is the same as that of the other work assist device 8. Therefore, only the structure of one work support device 8 will be described.
The work support device 8 includes a car supporting structure 9, a support 10, and a rope 11.
The support 10 is fixed in the hoistway 1. In the present embodiment, the support 10 is fixed to the car guide rail 6. When the hoistway 1 is viewed from above, as shown in fig. 3, the support 10 is fixed at a position separated from each of the areas of the car 2 and the counterweight 3. The support 10 has a fixed plate 101 and an inclined plate 102.
The fixing plate 101 overlaps the rear surface of the car guide rail 6. Thus, the fixing plate 101 is arranged perpendicular to the width direction of the hoistway 1. The fixing plate 101 is detachably fixed to the car guide rail 6 by a rail clip, not shown.
The inclined plate 102 is fixed to an end portion of the fixed plate 101. Further, the inclined plate 102 is inclined with respect to the fixed plate 101. The fixing plate 101 is fixed in the hoistway 1 with the end portion to which the inclined plate 102 is fixed facing the landing entrance 21 side. When the support 10 is viewed from above, the inclined plate 102 protrudes from the end of the fixed plate 101 in a direction toward the landing entrance 21 as approaching the center in the width direction of the hoistway 1.
The car supporting structure 9 is supported by a support member 10. The car supporting structure 9 is disposed between the bottom of the hoistway 1 and the car 2 in the height direction of the hoistway 1. In the present embodiment, the car supporting structure 9 is disposed at a height corresponding to the floor surface of the lowermost floor.
The car supporting structure 9 is a telescopic long member. The car supporting structure 9 further includes a plurality of 1 st coupling members 91 and a plurality of 2 nd coupling members 92. The plurality of 1 st coupling members 91 and the plurality of 2 nd coupling members 92 are a plurality of coupling members connected in series. That is, the car supporting structure 9 is a coupling member coupling body in which a plurality of 1 st coupling members 91 and a plurality of 2 nd coupling members 92 are coupled in series. In the car supporting structure 9, the 1 st coupling member 91 and the 2 nd coupling member 92 are alternately connected in series.
The 1 st coupling member 91 and the 2 nd coupling member 92, which are two coupling members adjacent to each other, are coupled to each other by a coupling shaft 93. The coupling shaft 93 couples the longitudinal ends of the 1 st coupling member 91 and the 2 nd coupling member 92 to each other. The 1 st coupling member 91 and the 2 nd coupling member 92, which are two coupling members adjacent to each other, are rotatable about the coupling shaft 93. The coupling shaft 93 is perpendicular to the longitudinal direction of each of the 1 st coupling member 91 and the 2 nd coupling member 92. Here, the direction along the connecting shaft 93 is referred to as the width direction of the car supporting structure 9. In the present embodiment, the car supporting structure 9 is supported by the support 10 in a state where the width direction of the car supporting structure 9 is horizontal.
Each 1 st coupling member 91 is a rod-like member. Each 2 nd coupling member 92 has a pair of coupling plates 921. The pair of linking plates 921 face each other in the width direction of the car supporting structure 9.
At the coupling portion of the 1 st coupling member 91 and the 2 nd coupling member 92, the 1 st coupling member 91 is inserted between the pair of coupling plates 921. Further, at the coupling portion of the 1 st coupling member 91 and the 2 nd coupling member 92, the coupling shaft 93 penetrates the 1 st coupling member 92 and the pair of coupling plates 921.
One end of the car supporting structure 9 is a sill-side end. The other end of the car supporting structure 9 is the opposite end of the sill. The position of the sill-side end of the car supporting structure 9 is closer to the landing sill 23 than the position of the opposite-side end of the sill of the car supporting structure 9. The opposite side end of the car supporting structure 9 to the sill is attached to a support 10. In the present embodiment, the coupling member forming the sill-side end of the car supporting structure 9 is the 1 st coupling member 91. In the present embodiment, the coupling member forming the opposite side end of the sill of the car supporting structure 9 is the 2 nd coupling member 92.
The opposite side end of the car supporting 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 horizontally arranged. The car supporting structure 9 is rotatable about a support shaft 12 with respect to the support 10. The connecting shafts 93 of the car supporting structure 9 are parallel to the support shaft 12.
The state of the car supporting structure 9 can be changed between the sill reaching state and the retracted state. In fig. 2 and 3, a pair of work support devices 8 are shown when the car supporting structure 9 is in the sill-reached state.
When the state of the car supporting structure 9 is the sill-reached state, the car supporting structure 9 reaches the landing sill 23 from the support 10. Specifically, when the state of the car supporting structure 9 is the sill-reached state, the sill-side end of the car supporting structure 9 reaches the landing sill 23 of the lowermost floor at a position closer to the center of the hoistway 1 than the position of the sill-opposite side end of the car supporting structure 9 in the width direction of the hoistway 1. Thus, when the state of the car supporting structure 9 is the sill-reached state, the car supporting structure 9 is inclined with respect to both the width direction of the hoistway 1 and the depth direction of the hoistway 1 when the hoistway 1 is viewed from above. In the work support device 8, when the hoistway 1 is viewed from above, as shown in fig. 3, the car supporting structure 9 is in a sill-reached state, and a part of the car supporting structure 9 overlaps with the area of the car 2.
When the state of the car supporting structure 9 is the retracted state, the car supporting structure 9 is disengaged from the landing sill 23. When the hoistway 1 is viewed from above, the car supporting structure 9 is in a retracted state in the work support device 8, and the car supporting structure 9 is separated from the area of the car 2.
Fig. 4 is an enlarged view showing the work support device 8 of fig. 2. Fig. 5 is an enlarged view showing the work support device 8 when the car supporting structure 9 of fig. 4 is in the retracted state. As shown in fig. 4, the car supporting structure 9 is in a sill-reached state by the extension of the car supporting structure 9. As shown in fig. 5, the car supporting structure 9 is retracted by contraction of the car supporting structure 9.
Here, an angle formed by two straight lines extending along the longitudinal direction of each of the 1 st coupling member 91 and the 2 nd coupling member 92 from a coupling shaft 93 coupling the 1 st coupling member 91 and the 2 nd coupling member 92, which are two coupling members adjacent to each other, is set as a coupling member-to-coupling angle. At this time, the car supporting structure 9 is unfolded by rotating the 1 st coupling member 91 and the 2 nd coupling member 92 toward the direction in which the angle between the coupling members is approximately 180 °. As shown in fig. 4, when the car supporting structure 9 is unfolded, the 1 st coupling members 91 and the 2 nd coupling members 92 are aligned on the same line, and the car supporting structure 9 is extended.
The car supporting structure 9 is folded by rotating the 1 st coupling member 91 and the 2 nd coupling member 92 in a direction in which the angle between the coupling members decreases. As shown in fig. 5, when the car supporting structure 9 is folded, the connection portion between the 1 st connection member 91 and the 2 nd connection member 92 is folded and the car supporting structure 9 is contracted.
The 1 st coupling member 91 forming the sill-side end of the car supporting structure 9 is provided with a protrusion 94. The projection 94 projects from the 1 st coupling member 91 in a direction perpendicular to both the longitudinal direction of the 1 st coupling member 91 and the width direction of the car supporting structure 9. When the car supporting structure 9 is in the sill-reached state, the projection 94 projects downward from the 1 st coupling member 91. When the car supporting structure 9 is in the sill-reached state, the projection 94 is fitted into the sill groove 24 of the lowermost landing sill 23. Thereby, the car supporting structure 9 is fixed to the landing sill 23.
The rope 11 is connected to the car supporting structure 9. In the present embodiment, the rope 11 is connected to the 1 st coupling member 91 forming the sill-side end of the car supporting structure 9. The rope 11 is also connected to the lowermost landing sill 23. The rope 11 hangs down from the car supporting structure 9 to the landing sill 23. In each of the work support devices 8 of the pair of work support devices 8, the length of the rope 11 is ensured to be a sufficient length that the car 2 does not interfere with the rope 11 even when the car 2 stops at the lowest floor when the state of the car supporting structure 9 is in the retracted state. As the rope-like body 11, a wire, a rope, a chain, or the like is used.
Next, an operation method of the pair of work support devices 8 will be described. A work support device 8 is mounted in advance on each of the pair of car guide rails 6. In the normal operation of the elevator, the state of the car supporting structure 9 is a retracted state in each of the work support devices 8 of the pair of work support devices 8. In this state, even if the car 2 and the counterweight 3 move in the hoistway 1, the work support devices 8 do not interfere with the car 2 and the counterweight 3.
When performing maintenance work on elevator equipment provided at the bottom of the hoistway 1, an operator opens the landing doorway 21 at the lowest floor. The worker moves the car 2 to a position above the lowest floor. Thus, the worker at the lowest landing can pull the rope 11 connected to the landing sill 23. Then, the worker pulls the rope 11 in each work support device 8 and brings the sill-side end of the car supporting structure 9 close to the landing sill 23. Thereby, the car supporting structure 9 is extended, and the sill-side end of the car supporting structure 9 reaches the landing sill 23. In this way, in each work support device 8, the car supporting structure 9 is in the sill-reached state.
Then, the worker inserts the protrusion 94 of the car supporting structure 9 in each work assisting device 8 into the sill groove 24 of the landing sill 23. Thereby, each car supporting structure 9 is fixed to the landing sill 23. When the car supporting structure 9 is in the sill-reached state, if the car 2 is to be moved to a position lower than the lowest floor, the car 2 interferes with the car supporting structure 9, and intrusion of the car 2 into the bottom of the hoistway 1 is prevented. This ensures a working space for an operator at the bottom of the hoistway 1.
Then, the operator enters the bottom of the hoistway 1 from the lowest landing entrance 21, and performs maintenance work on the elevator equipment.
After the maintenance work on the elevator equipment is completed, the operator moves from the bottom of the hoistway 1 to the lowest landing through the lowest landing entrance 21. Then, the worker disengages the protrusion 94 of each work support device 8 from the sill groove 24 of the landing sill 23, and presses the sill-side end of each car supporting structure 9 toward the support 10 with a tool such as a rod. As a result, in each work support device 8, the car support structure 9 is contracted, and the state of the car support structure 9 is set to the retracted state. Then, the operator closes the lowest landing entrance 21. Thereby, the maintenance work on the elevator apparatus is completed.
In such a work support device 8, the rope 11 connected to the car supporting structure 9 is connected to the landing sill 23. The state of the car supporting structure 9 can be changed between the sill reaching state and the retracted state. Therefore, the worker can change the state of the car supporting structure 9 from the retracted state to the sill-reached state by pulling the rope-like member 11 from the landing. This prevents the car 2 from entering the bottom of the hoistway 1 by the car supporting structure 9. Therefore, the operator can secure a working space in the bottom of the hoistway 1 without entering the bottom of the hoistway 1. This makes it unnecessary for the operator to enter the bottom of the hoistway 1 to perform work for securing the work space of the operator, and the work load of the operator on the bottom of the hoistway 1 can be reduced.
The state of the car supporting structure 9 is a sill-reached state by the extension of the car supporting structure 9, and is a retracted state by the contraction of the car supporting structure 9. Therefore, the arrangement space of the car supporting structure 9 in the retracted state can be reduced. This makes it possible to effectively use the space in the hoistway 1.
The car supporting structure 9 further includes a plurality of 1 st coupling members 91 and a plurality of 2 nd coupling members 92 connected in series. The 1 st coupling member 91 and the 2 nd coupling member 92, which are two coupling members adjacent to each other, are rotatably coupled about a coupling shaft 93. Therefore, the car supporting structure 9 can be expanded and contracted by the rotation of the 1 st coupling member 91 and the 2 nd coupling member 92, and the structure of the car supporting structure 9 can be simplified.
Embodiment 2.
Fig. 6 is a side view showing a work support device according to embodiment 2. Each work support device 8 has a restoring mechanism 95. The restoring mechanism 95 is a mechanism that biases the car supporting structure 9 in a direction in which the car supporting structure 9 contracts. The restoring mechanism 95 is provided in the car supporting structure 9.
The restoring mechanism 95 includes a plurality of unit mechanism portions 951. Each unit mechanism portion 951 generates a force in a direction to bring the 1 st coupling member 91 and the 2 nd coupling member 92, which are two coupling members adjacent to each other, close to each other. That is, the force of the unit mechanism portion 951 is applied to the 1 st coupling member 91 and the 2 nd coupling member 92 adjacent to each other in the direction in which the car supporting structure 9 is folded and contracted.
Each unit mechanism portion 951 includes an elastic body 951a, a 1 st connection portion 951b, and a 2 nd connection portion 951c.
The 1 st connection portion 951b is fixed to the 1 st coupling member 91. The 2 nd connection portion 951c is fixed to the 2 nd coupling member 92. In the present embodiment, the 1 st connecting portion 951b is fixed to the middle portion in the longitudinal direction of the 1 st coupling member 91, and the 2 nd connecting portion 951c is fixed to the middle portion in the longitudinal direction of the 2 nd coupling member 92. In the present embodiment, the 1 st connecting portion 951b protrudes from the 1 st coupling member 91 in a direction perpendicular to both the longitudinal direction of the 1 st coupling member 91 and the direction along the coupling shaft 93. In the present embodiment, the 2 nd connection portion 951c is fixed to a space between the pair of coupling plates 921. Pins are used as the 1 st connection portion 951b and the 2 nd connection portion 951c, respectively.
One end of the elastic body 951a is connected to the 1 st connection portion 951 b. The other end portion of the elastic body 951a is connected to the 2 nd connection portion 951 c. The elastic body 951a generates an elastic restoring force in a direction in which the 1 st connecting portion 951b and the 2 nd connecting portion 951c approach each other. Thus, each unit mechanism portion 951 applies an elastic restoring force of the elastic body 951a to the 1 st coupling member 91 and the 2 nd coupling member 92 in a direction in which the coupling member angle between the 1 st coupling member 91 and the 2 nd coupling member 92 becomes smaller. In this embodiment, a spring is used as the elastic body 951a.
In the normal operation of the elevator, the state of the car supporting structure 9 is maintained in the retracted state by the force of the restoring mechanism 95 in each of the work support devices 8 of the pair of work support devices 8. In each work support device 8, when the state of the car support structure 9 is changed from the retracted state to the sill-reached state, the worker at the landing pulls the rope-like body 11 to expand the car support structure 9 against the force of the restoring mechanism 95. Thereby, the car supporting structure 9 is extended, and the sill-side end of the car supporting structure 9 reaches the landing sill 23. Thus, the car supporting structure 9 is in the sill-reached state.
In each work support device 8, when returning the state of the car support structure 9 from the sill-reached state to the retracted state, the worker releases the protrusion 94 of the car support structure 9 from the sill groove 24 of the landing sill 23 and reduces the force for pulling the rope 11. Thereby, the car supporting structure 9 is automatically folded and contracted by the force of the restoring mechanism 95. Thus, the car supporting structure 9 is in the retracted state. Other structures of this embodiment are the same as those of embodiment 1.
In such a work support device 8, the force of the restoring mechanism 95 is applied to the car supporting structure 9 in the direction in which the car supporting structure 9 contracts. Therefore, even if the car supporting structure 9 is not pressed against the support 10, the car supporting structure 9 can be contracted by the force of the restoring mechanism 95. This makes it possible to easily change the state of the car supporting structure 9 from the sill reaching state to the retracted state.
Embodiment 3.
Fig. 7 is an enlarged view showing a state in which the car supporting structure of the work support device according to embodiment 3 is fixed to the landing sill. The 1 st coupling member 91 forming the sill-side end of the car supporting structure 9 is provided with a through hole 911. The through hole 911 penetrates the 1 st coupling member 91 in a direction perpendicular to both the longitudinal direction of the 1 st coupling member 91 and the width direction of the car supporting 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 support device 8 has a fixing bolt 96. The fixing bolt 96 is a fixing member for fixing the car supporting structure 9 to the landing sill 23 when the car supporting structure 9 is in the sill-reached state.
The screw portion of the fixing bolt 96 passes through the through hole 911. Further, the screw portion of the fixing bolt 96 is attached to the screw hole 231. The car supporting structure 9 is fixed to the landing sill 23 by screwing the screw portion of the fixing bolt 96 passing through the through hole 911 into the screw hole 231. In a state where the car supporting structure 9 is fixed to the landing sill 23 by the fixing bolts 96, the sill-side end portion of the car supporting structure 9 overlaps with the upper surface of the landing sill 23. In the present embodiment, the protrusion 94 fitted in the sill groove 24 is not provided in the car supporting structure 9.
The car supporting structure 9 is separated from the landing sill 23 by separating the fixing bolts 96 from the screw holes 231. Other structures of this embodiment are the same as those of embodiment 1.
In such a work support device 8, when the car supporting structure 9 is in the sill-reached state, the car supporting structure 9 is fixed to the landing sill 23 by the fixing bolts 96. Therefore, the car supporting structure 9 can be more reliably fixed to the landing sill 23, and the car supporting structure 9 can be more reliably prevented from being accidentally detached from the landing sill 23.
Embodiment 4.
Fig. 8 is an enlarged view showing a state in which the car supporting structure of the work support device according to embodiment 4 is fixed to the landing sill. Each work support device 8 has a grip 97. The grip 97 is a fixing member for fixing the car supporting structure 9 to the landing sill 23 when the car supporting structure 9 reaches the sill. The grip 97 has a bolt 971 and a pressing member 972.
The pressing member 972 is a plate-like member. A screw hole 973 is provided in the pressing member 972. The screw hole 973 penetrates the pressing member 972 in the thickness direction of the pressing member 972. The pressing member 972 overlaps the lower surface of the landing sill 23. The 1 st coupling member 91 forming the sill-side end of the car supporting structure 9 is overlapped with the upper surface of the landing sill 23. A part of the landing sill 23 is sandwiched between the 1 st coupling member 91 and the pressing member 972 which form the sill-side end of the car supporting structure 9.
The 1 st coupling member 91 forming the sill-side end of the car supporting structure 9 is provided with a through hole 912. The through hole 912 penetrates the 1 st coupling member 91 in a direction perpendicular to both the longitudinal direction of the 1 st coupling member 91 and the width direction of the car supporting structure 9.
The threaded portion of the bolt 971 passes through the through hole 912. Further, a threaded portion of the bolt 971 is mounted in the screw hole 973. The landing sill 23 is held between the 1 st coupling member 91 and the pressing member 972 by screwing the screw portion of the bolt 971 penetrating the through hole 912 into the screw hole 973. Thereby, the car supporting structure 9 is fixed to the landing sill 23. That is, the landing sill 23 is gripped between the car supporting structure 9 and the pressing member 972, whereby the car supporting structure 9 is fixed to the landing sill 23. The projection 94 is fitted into the sill groove 24 in a state where the car supporting structure 9 is fixed to the landing sill 23.
The cage support structure 9 is disengaged from the landing sill 23 by unscrewing the bolts 971 from the screw holes 973. Other structures of this embodiment are the same as those of embodiment 1.
In such a work support device 8, when the state of the car supporting structure 9 is the sill-reached state, the car supporting structure 9 is fixed to the landing sill 23 by the gripper 97. Therefore, the car supporting structure 9 can be more reliably fixed to the landing sill 23, and the car supporting structure 9 can be more reliably prevented from being accidentally detached from the landing sill 23. Further, the work of providing the screw hole for the mounting bolt to the landing sill 23 can be omitted.
In addition, in a state where the landing sill 23 is held between the car supporting structure 9 and the pressing member 972, the projection 94 of the car supporting structure 9 is fitted into the sill groove 24. Therefore, the protrusion 94 can prevent the car supporting structure 9 from sliding in a direction away from the landing sill 23 with respect to the landing sill 23. This can more reliably maintain the state in which the car supporting structure 9 is fixed to the landing sill 23.
Embodiment 5.
Fig. 9 is a plan view showing a work support device according to embodiment 5. The work support device 8 has a mounting member 13. The mounting member 13 is mounted to the support 10. Specifically, the mounting member 13 is mounted 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 horizontally arranged. The mounting member 13 is rotatable about the support shaft 12 with respect to the support 10.
The opposite side end of the car supporting structure 9 to the sill is attached to the inclined plate 102 by an attachment member 13. The opposite side end of the car supporting structure 9 to the sill is connected to the 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 of the coupling shafts 93. The mounting shaft 14 is perpendicular to the support shaft 12. The car supporting structure 9 is rotatably coupled to the mounting member 13 about the mounting shaft 14. In the present embodiment, the coupling member forming the opposite side end of the sill of the car supporting structure 9 is the 1 st coupling member 91, and the coupling member forming the opposite side end of the sill of the car supporting structure 9 is the 1 st coupling member 91. In the present embodiment, the mounting shaft 14 is disposed along the longitudinal direction of the 1 st coupling member 91 forming the opposite side end of the sill of the car supporting structure 9.
The projection 94 projects from the 1 st coupling member 91 forming the sill-side end of the car supporting structure 9 in a direction parallel to the coupling shafts 93. Thus, when the car supporting structure 9 rotates about the mounting shaft 14 so that the projection 94 becomes horizontal, the coupling shafts 93 of the car supporting structure 9 also become horizontal. When the car supporting structure 9 rotates about the mounting shaft 14 so that the projection 94 is directed downward, the coupling shafts 93 of the car supporting structure 9 are arranged along the vertical direction.
Fig. 10 is a plan view showing a state in which the protrusion 94 of the car supporting structure 9 of fig. 9 is fitted into the sill groove 24 of the landing sill 23. When the state of the car supporting structure 9 is the sill-reached state, the protrusion 94 of the car supporting structure 9 is fitted into the sill groove 24 of the landing sill 23, and the protrusion 94 is directed downward. Thus, the coupling shafts 93 of the car supporting structure 9 are arranged along the vertical direction.
In each work support device 8, when the state of the car support structure 9 is changed from the retracted state to the sill-reached state, the worker at the landing pulls the rope-like body 11 to expand the car support structure 9. At this time, the car supporting structure 9 is unfolded in a state where the connecting shafts 93 are horizontally arranged. Thereby, the car supporting structure 9 is extended, and the sill-side end of the car supporting structure 9 reaches the landing sill 23. Thus, the car supporting structure 9 is in the sill-reached state.
Then, the worker rotates the car supporting structure 9 about the mounting shaft 14 with respect to the mounting member 13 until the projection 94 is directed downward. As a result, as shown in fig. 10, the coupling shafts 93 are arranged along the vertical direction. The tab 94 is then inserted into the sill groove 24. Thereby, the car supporting structure 9 is fixed to the landing sill 23.
In each work support device 8, when returning the state of the car supporting structure 9 from the sill-reached state to the retracted state, the worker disengages the protrusion 94 from the sill groove 24 and rotates the car supporting structure 9 about the mounting shaft 14 with respect to the mounting member 13 until the protrusion 94 becomes horizontal. Then, the worker presses the car supporting structure 9 against the support 10. Thereby, the car supporting structure 9 is folded and contracted. Thus, the car supporting structure 9 is in the retracted state. Other structures of this embodiment are the same as those of embodiment 1.
In the work support device 8, the car support structure 9 is rotatably coupled to the mounting member 13 about the mounting shaft 14, and the mounting shaft 14 has an axis perpendicular to a straight line parallel to the coupling shafts 93. Therefore, when the car supporting structure 9 is in the sill-reached state, the coupling shafts 93 can be arranged along the vertical direction. This can increase the rigidity of the car supporting structure 9 against a load in the vertical direction. Therefore, for example, even when the car support structure 9 receives a load of the car 2 from above in the vertical direction, the car support structure 9 is less likely to bend, and a working space for an operator at the bottom of the hoistway 1 can be ensured more reliably.
Embodiment 6.
Fig. 11 is a side view showing a work support device according to embodiment 6. Fig. 12 is a cross-sectional view taken along line XII-XII of fig. 11. Fig. 11 and 12 show the work support device 8 when the car supporting structure 9 is in the sill-reached state. In each of the work support devices 8 of the pair of work support devices 8, the car supporting structure 9 is movable with respect to the support 10. In the present embodiment, the car supporting structure 9 is movable in the horizontal direction with respect to the support 10. The support 10 is fixed in the hoistway 1 in a state of being separated from the inner wall surface of the hoistway 1. The support 10 is disposed between the rear 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 has a pair of opposed plates 105, a fixed plate 106 and a fixed pin 107.
The fixing plate 106 overlaps with the rear surface of the car guide rail 6. Thus, the fixing plate 106 is perpendicular to the width direction of the hoistway 1. The fixing plate 106 is detachably fixed to the car guide rail 6 by a rail clip, not shown.
A pair of opposed plates 105 are fixed to the fixed plate 106. Further, the pair of opposed plates 105 are opposed to each other in the vertical direction. A space through which the car supporting structure 9 passes is formed between the pair of opposed plates 105.
As shown in fig. 11, the pair of opposed plates 105 each have a fixed-side opposed portion 105a and an open-side opposed portion 105b. In each of the opposed plates 105 of the pair of opposed plates 105, the open-side opposed portion 105b protrudes from the fixed-side opposed portion 105a toward the landing sill 23 side.
When the support 10 is viewed in the width direction of the hoistway 1, the fixing plate 106 is disposed only in the range where the fixing-side opposing portions 105a face each other, but is not disposed in the range where the sill-side opposing portions 105b face each other. Only the fixing-side opposing portions 105a of each of the pair of opposing plates 105 are fixed to the fixing plate 106.
The fixing pin 107 is fixed between the open-side opposing portions 105b of the pair of opposing plates 105. The fixing pin 107 is disposed along the vertical direction.
The car supporting structure 9 is an elongated member having an axis. Here, a direction perpendicular to the axis of the car supporting structure 9 is defined as the width direction of the car supporting structure 9. The thickness direction of the car supporting structure 9 is a direction perpendicular to both the direction along the axis of the car supporting structure 9 and the width direction of the car supporting structure 9. At this time, the car supporting structure 9 is disposed such that the thickness direction of the car supporting structure 9 coincides with the vertical direction.
The car supporting structure 9 includes a main body member 98, a drop preventing member 99, and an extension member 100.
The main body member 98 and the extension member 100 are members along the axis of the car-supporting structure 9, respectively. Thus, 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 supporting structure 9. An end of the extension member 100 is fixed to an end of the main body member 98. The other end of the main body member 98 is the opposite end of the car supporting structure 9 from the sill. The other end of the extension member 100 is a sill-side end of the car supporting structure 9.
The body member 98 has a pair of elongated strips 981. A pair of elongated slats 981 are plates along the axis of the car-supporting structure 9. The pair of long strips 981 face each other in the width direction of the car supporting structure 9.
The drop prevention member 99 is fixed to the opposite side end of the car supporting structure 9 to the sill. Further, the drop prevention member 99 is fixed between a pair of long strips 981. In the present embodiment, a pin connecting a pair of long strips 981 to each other is used as the escape prevention member 99. The drop prevention member 99 is arranged along the width direction of the car supporting structure 9.
A projection 94 is provided at the sill-side end of the car supporting structure 9. The projection 94 projects downward from the extension member 100 in the thickness direction of the car supporting structure 9. As shown in fig. 11, the rope 11 connected to the lowermost landing sill 23 is connected to the extension member 100.
A portion of the car supporting structure 9 passes through the space between the pair of opposed plates 105. Thereby, the car supporting structure 9 is sandwiched between the pair of opposed plates 105 in the thickness direction of the car supporting structure 9. The car supporting structure 9 can be guided by the pair of opposed plates 105 to move in a direction along the pair of opposed plates 105, that is, in the horizontal direction with respect to the support 10.
The fixing pin 107 passes between a pair of long strips 981. Further, the fixing pin 107 is slidable between a pair of long strips 981 along the longitudinal direction of the main body member 98. Thereby, the car supporting structure 9 can slide with respect to the fixing pin 107 in a direction along the axis of the car supporting structure 9 and move with respect to the support 10. The range in which the car supporting structure 9 can slide with respect to the fixing pin 107 is a range between the retaining member 99 and the extension member 100. The car supporting structure 9 is also rotatable about the fixing pin 107 with respect to the support 10.
In each work support device 8, the state of the car supporting structure 9 is changed between the sill-reached state and the retracted state by the movement of the car supporting structure 9 relative to the support 10.
When the car supporting structure 9 is in the sill-reached state, the main body member 98 is supported by the support 10, and the extension member 100 reaches the landing sill 23. When the car supporting structure 9 is in the sill-reached state, the projection 94 is fitted into the sill groove 24 of the landing sill 23.
Fig. 13 is a cross-sectional view showing each work support device 8 when the car supporting structure 9 of fig. 12 is in the retracted state. When the state of the car supporting structure 9 is the retracted state, the car supporting structure 9 is disposed in a space between the rear surface of the car guide rail 6 and the inner wall surface of the hoistway 1. When the car supporting structure 9 is in the retracted state, a part of the main body member 98 is accommodated in the space between the pair of opposed plates 105, and the car supporting structure 9 is disposed along the depth direction of the hoistway 1. When the car supporting structure 9 is in the retracted state, a part of the main body member 98 protrudes from the support 10 to the side farther from the landing sill 23 than the support 10.
When the state of the car supporting structure 9 is changed from the retracted state to the sill-reached state, the rope 11 is pulled from the landing, so that the car supporting structure 9 is moved in a direction approaching the landing sill 23 with respect to the support 10. At this time, the car supporting structure 9 rotates about the fixing pin 107 with respect to the support 10, and moves with respect to the support 10 in a direction in which the drop preventing member 99 approaches the fixing pin 107. Thereby, the extension member 100 of the car supporting structure 9 reaches the landing sill 23. Thus, the car supporting structure 9 is in the sill-reached state. Then, the protrusion 94 of the extension member 100 is fitted into the sill groove 24.
When the state of the car supporting structure 9 is changed from the sill-reached state to the retracted state, the protrusion 94 is disengaged from the sill groove 24, and then the car supporting structure 9 is pushed away from the landing sill 23 by a tool such as a rod. Thereby, the car supporting structure 9 moves toward the space between the rear surface of the car guide rail 6 and the inner wall surface of the hoistway 1 with respect to the support 10. At this time, the car supporting structure 9 rotates about the fixing pin 107 with respect to the support 10, and moves with respect to the support 10 in a direction in which the extension member 100 approaches the fixing pin 107. Thus, a part of the main body member 98 protrudes from the support 10 to a side farther from the landing sill 23 than the support 10, and a part of the main body member 98 is accommodated in a space between the pair of opposed plates 105. Thereby, the car supporting structure 9 is in the retracted state. Other structures of this embodiment are the same as those of embodiment 1.
In such a work support device 8, the state of the car supporting structure 9 is changed between the sill-reached state and the retracted state by moving the car supporting structure 9 relative to the support 10. Therefore, the car supporting structure 9 does not need to be expanded and contracted. This makes it possible to simplify the structure of the car supporting structure 9 and to easily manufacture the work support device 8. Further, since there is no need to expand and contract the car supporting structure 9, the rigidity of the car supporting structure 9 can be easily improved.
In embodiment 2, the restoring mechanism 95 is applied to the car supporting structure 9 of embodiment 1. However, the restoring mechanism 95 may be applied to the car supporting structure 9 of embodiments 3 to 5.
In embodiment 3, the structure in which the car supporting structure 9 is fixed to the landing sill 23 by the fixing bolts 96 is applied to the car supporting structure 9 of embodiment 1. However, the structure in which the car supporting structure 9 is fixed to the landing sill 23 by the fixing bolts 96 may be applied to the car supporting structure 9 of embodiment 2, embodiment 5, and embodiment 6.
In embodiment 4, the structure in which the gripper 97 of the car-supporting structure 9 is fixed to the landing sill 23 is applied to the car-supporting structure 9 of embodiment 1. However, the structure in which the gripper 97 of the car-supporting structure 9 is fixed to the landing sill 23 may be applied to the car-supporting structures 9 of embodiment 2, embodiment 5, and embodiment 6.
In embodiment 1 to embodiment 5, the 2 nd coupling member 92 has a pair of coupling plates 921. However, the structure of the 2 nd coupling member 92 is not limited thereto. For example, the 2 nd coupling member 92 may be provided as only one coupling plate 921. In this way, the 1 st coupling member 91 and the 2 nd coupling member 92 can be coupled to each other by the coupling shaft 93.
In embodiments 1 to 4, a coupling member coupling body in which a plurality of 1 st coupling members 91 and a plurality of 2 nd coupling members 92 are coupled in series is used as the car supporting structure 9. However, the car supporting structure 9 is not limited to the coupling member coupling body. For example, a sliding member connected body in which a plurality of sliding members are connected in series may be used as the car supporting structure. In this case, the car supporting structure expands and contracts by sliding the plurality of sliding members with respect to each other. For example, a plurality of cylindrical members are used as the plurality of sliding members. In the case where a plurality of cylindrical members are used as the plurality of sliding members, one of the two cylindrical members adjacent to each other is slidably inserted inside the other cylindrical member.
In each of the above embodiments, the pair of work support devices 8 is provided in the hoistway 1. However, the number of work support devices 8 is not limited thereto. For example, the number of work support devices 8 may be only one. In this case, the support 10 is fixed to only one of the pair of car guide rails 6.
In each of the above embodiments, the support 10 is fixed to the car guide rail 6. However, the object of fixing the support 10 is not limited thereto. For example, the support 10 may be fixed to the inner wall surface of the hoistway 1.
In each of the above embodiments, the car supporting structure 9 is disposed at a height corresponding to the floor surface of the lowermost floor. However, the position of the car supporting structure 9 in the height direction of the hoistway 1 is not limited thereto. For example, the car supporting structure 9 may be disposed at a height corresponding to the floor surface of the floor above the lowermost floor.
Description of the reference numerals
1: a hoistway; 2: a car; 9: a car support structure; 10: a support; 11: a rope-like body; 13: a mounting member; 14: a mounting shaft; 23: landing sill; 91: 1 st coupling member (coupling member); 92: a 2 nd coupling member (coupling member); 93: a connecting shaft; 95: a restoring mechanism; 96: a fixing bolt (fixing member); 97: gripping member (fixing member).
Claims (7)
1. An operation support device for an elevator, wherein the operation support device for an elevator comprises:
a support fixed in a hoistway in which the car moves;
a car supporting 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 rope-shaped body connected with the car bearing structure body and connected with the landing sill,
the supporting member is fixed at a position separated from the area of the car when the hoistway is viewed from above,
The state of the car supporting structure can be changed between a sill reaching state in which the car supporting structure reaches the landing sill from the support and a retreating state in which the car supporting structure is separated from the landing sill,
when the hoistway is viewed from above, the car supporting structure is brought into the sill-reached state, a part of the car supporting structure overlaps with the area of the car, and the car supporting structure is brought into the retracted state, whereby the car supporting structure is separated from the area of the car.
2. The operation support device for an elevator according to claim 1, wherein,
the operation support device for an elevator is provided with a fixing member which fixes the car support structure to the landing sill when the car support structure is in the sill-reached state.
3. The operation support device for an elevator according to claim 1 or 2, wherein,
the state of the car supporting structure is the sill-reached state by the extension of the car supporting structure, and the retracted state by the contraction of the car supporting structure.
4. The operation support device for an elevator according to claim 3, wherein,
the work support device for an elevator is provided with a restoring mechanism that biases the car support structure in a direction in which the car support structure contracts.
5. The operation support device for an elevator according to claim 3 or 4, wherein,
the car support structure has a plurality of linking members connected in series,
two coupling members adjacent to each other are rotatably coupled about a coupling shaft.
6. The operation support device for an elevator according to claim 5, wherein,
the operation auxiliary device of the elevator comprises a mounting component which is mounted on the supporting piece,
the car support structure is rotatably coupled to the mounting member about a mounting shaft having an axis perpendicular to a straight line parallel to the coupling shaft.
7. The operation support device for an elevator according to claim 1 or 2, wherein,
the car support structure is movable relative to the support,
by moving the car supporting structure relative to the support, the state of the car supporting structure is changed between the sill reaching state and the retracted state.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2021/019561 WO2022249231A1 (en) | 2021-05-24 | 2021-05-24 | Elevator work assistance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117320990A true CN117320990A (en) | 2023-12-29 |
Family
ID=84229610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180098248.4A Pending CN117320990A (en) | 2021-05-24 | 2021-05-24 | Operation auxiliary device for elevator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7412643B2 (en) |
| CN (1) | CN117320990A (en) |
| WO (1) | WO2022249231A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001199646A (en) * | 2000-01-18 | 2001-07-24 | Hitachi Building Systems Co Ltd | Safety device of elevator |
| CN102602789B (en) * | 2012-03-27 | 2014-04-16 | 中国矿业大学 | Mining elevator bearing platform and bearing method thereof |
| JP6252391B2 (en) * | 2014-07-22 | 2017-12-27 | 三菱電機ビルテクノサービス株式会社 | Elevator collision prevention device |
-
2021
- 2021-05-24 CN CN202180098248.4A patent/CN117320990A/en active Pending
- 2021-05-24 WO PCT/JP2021/019561 patent/WO2022249231A1/en active Application Filing
- 2021-05-24 JP JP2023523715A patent/JP7412643B2/en active Active
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| Publication number | Publication date |
|---|---|
| JPWO2022249231A1 (en) | 2022-12-01 |
| JP7412643B2 (en) | 2024-01-12 |
| WO2022249231A1 (en) | 2022-12-01 |
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