Elevator and pit work assisting device thereof

Abstract

A pit work assisting device of an elevator has a restriction body, a setting operation member, a stop mechanism, and a release operation member. The restriction body is movable between a storage position and a restriction position. The setting operation member is connected to the restriction body. The stop mechanism restricts the restriction body from moving downward when the restriction body moves to the restriction position. The release operation member is connected to the stop mechanism. The restriction body is movable from the storage position to the restriction position by an operator at a landing using the setting operation member. The stop mechanism is capable of releasing the restriction state of the restriction body by the operator at the landing using the release operation member.

Description

Technical Field

[0001] This disclosure relates to elevators and their pit operation auxiliary devices. Background Technology

[0002] In existing elevator buffer covers, a deformable body is provided around the buffer. This deformable body can deform between a first state and a second state. In the first state, the upper end of the deformable body is located below the upper end of the buffer. In the second state, the upper end of the deformable body is located above the upper end of the buffer. In the second state, the deformable body is fixed to the upper end of the buffer by a fixing body. This ensures a safe working area in the pit of the shaft (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2017-222502 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the aforementioned existing elevator buffer cover, within the narrow pit, the operator needs to deform the deformable body between the first and second states, and the workability is low compared to the buffer and the fixed body for disassembly and assembly.

[0008] This disclosure was made to solve the aforementioned problem, and its purpose is to provide an elevator and a pit operation auxiliary device that can reduce the workload in the pit of the shaft.

[0009] Methods for solving problems

[0010] The elevator pit operation auxiliary device disclosed herein includes: a limiting body that can move along a guide rail provided in the hoistway between a storage position and a limiting position above the storage position in the pit of the hoistway, wherein when in the limiting position, the car is limited to move to a position below the limiting position; an operating component connected to the limiting body and operable from the landing; a stop mechanism having a fixed side mechanism provided on the guide rail and a movable side mechanism provided on the limiting body, wherein when the limiting body moves to the limiting position, the stop mechanism limits the limiting body to move downward; and a release operating component connected to the stop mechanism and operable from the landing, wherein the limiting body can be moved from the storage position to the limiting position by an operator located at the landing using the operating component, and the stop mechanism can be released from the limiting state of the limiting body by an operator located at the landing using the release operating component.

[0011] Invention Effects

[0012] According to this disclosure, it is possible to reduce the workload in the pit of the shaft. Attached Figure Description

[0013] Figure 1 This is a schematic perspective view of the elevator according to Embodiment 1.

[0014] Figure 2 It shows that Figure 1 A 3D view of the state of the restrained object after it has been moved to the restrained position.

[0015] Figure 3 It is shown Figure 1 A side view of the main part of the elevator.

[0016] Figure 4 It shows that Figure 3 A side view of the situation midway through the movement of the restricted body towards the restricted position.

[0017] Figure 5 It is shown in magnification Figure 4 Side view of the main part.

[0018] Figure 6 It is shown in magnification Figure 1 A 3D view of the main parts of the elevator.

[0019] Figure 7 Is only shown Figure 6 A three-dimensional view of the stopping mechanism.

[0020] Figure 8 It shows that Figure 7 A three-dimensional view of the movable side mechanism after it has risen.

[0021] Figure 9 It shows that Figure 8 A three-dimensional view of the state after the movable side mechanism has been further raised.

[0022] Figure 10 It shows that Figure 9 A three-dimensional view of the state after the movable side mechanism has been lowered.

[0023] Figure 11 From and Figure 10 Observe from different angles Figure 10 A three-dimensional view of the stopping mechanism.

[0024] Figure 12 It shows that Figure 11 A three-dimensional view of the state of the opening and closing components after they have rotated relative to the rotating components.

[0025] Figure 13 This is a structural diagram showing the main parts of the pit operation auxiliary device according to Embodiment 2.

[0026] Figure 14 This is a structural diagram showing the main parts of the pit operation auxiliary device of Embodiment 3. Detailed Implementation

[0027] The embodiments will now be described with reference to the accompanying drawings.

[0028] Implementation Method 1

[0029] Figure 1 This is a schematic structural diagram showing the elevator according to Embodiment 1. Figure 1 In the hoistway 1, a car 2 and a counterweight (not shown) are installed. Figure 1 The interior of shaft 1 is shown in mid-perspective.

[0030] A pair of car guide rails 3 and a pair of counterweight guide rails 4 are installed in the hoistway 1. The car 2 moves up and down in the hoistway 1 along the pair of car guide rails 3. The counterweight moves up and down in the hoistway 1 along the pair of counterweight guide rails 4.

[0031] The car 2 and counterweight are suspended within the hoistway 1 by a suspension system (not shown). A traction machine (not shown) is installed in a machine room (not shown) or within the hoistway 1. The traction machine includes a drive sheave, a traction machine motor, and a traction machine brake.

[0032] The suspension body is wound around the drive sheave. By rotating the drive sheave, the car 2 and the counterweight rise and fall within the hoistway 1. The traction machine motor rotates the drive sheave. The traction machine brake keeps the drive sheave stationary. In addition, the traction machine brake brakes the rotation of the drive sheave.

[0033] A buffer platform 5 is installed at the bottom of the pit 1a in the hoistway 1. The pit 1a is the area in the hoistway 1 that is below the ground 11 of the lowest station. A buffer 6 is installed on the buffer platform 5. The buffer 6 mitigates the impact of the car 2 colliding with the bottom of the pit 1a.

[0034] A restraint body 21 is placed at the bottom of the pit 1a. The restraint body 21 is a rectangular frame. Furthermore, the restraint body 21 can move up and down along a pair of car guide rails 3. In addition, the restraint body 21 is positioned directly below the car 2. Viewed from directly above, the car 2 and the restraint body 21 overlap entirely.

[0035] A pair of guide members 22 are provided on the limiting body 21. Each guide member 22 contacts a corresponding car guide rail 3. Furthermore, the pair of guide members 22 restricts the limiting body 21 from moving in the longitudinal and width directions of the car 2. The longitudinal direction of the car 2 is... Figure 1 The direction parallel to the X-axis. The width direction of car 2 is parallel to... Figure 1 The direction parallel to the Y-axis.

[0036] Each car guide rail 3 is fixed with a fixing side mechanism 23. The limiting body 21 can... Figure 1 The storage location shown is the same as Figure 2 The device moves between the indicated restricted positions. The storage position is the bottom of pit 1a. When in the storage position, the restrictor 21 is placed on the buffer platform 5.

[0037] The restricted position is located above the storage position. In Implementation 1, the restricted position is located above the ground of the lowest floor and below the upper edge of the floor entrance 12 of the lowest floor.

[0038] When the limiting body 21 is in the limiting position, it is supported by a pair of fixed-side mechanisms 23. Furthermore, when the limiting body 21 is in the limiting position, it prevents the car 2 from moving to a position lower than the limiting position. That is, when the limiting body 21 is in the limiting position, the car 2 is prevented from moving to a position lower than the limiting body 21 by abutting against the limiting body 21.

[0039] During the operation of the worker in the pit 1a, the restraint body 21 is in a restricted position. This ensures that the worker has sufficient retreat space.

[0040] Figure 3 It is shown Figure 1 A side view of the main part of the elevator. Figure 4 It shows that Figure 3 A side view of the situation when the limiting body 21 moves to the limiting position.

[0041] Although Figure 1 and Figure 2 The details are omitted, but a setting line 24, which serves as a setting operation component, is connected to the limiting body 21. The setting line 24 has a first end 24a and a second end 24b. The first end 24a is connected to the limiting body 21.

[0042] A wire connection 13a is provided on the landing sill 13 of the lowest landing. When the restraint body 21 is in the storage position, the second end 24b is connected to the wire connection 13a. By opening the landing entrance / exit of the lowest landing, the connection between the second end 24b and the wire connection 13a can be released from the lowest landing. Furthermore, the installation wire 24 can be operated from the lowest landing.

[0043] like Figure 4 As shown, the restraint 21 can be pulled up from the storage position by the operator at the lowest level station using the setting line 24. From Figure 4 Starting from the state, the limiting body 21 can be further pulled up using the setting line 24, or the limiting body 21 can be lifted directly, thereby enabling the limiting body 21 to move to the limiting position.

[0044] In addition, although Figure 1 and Figure 2 The details are omitted, but a storage detection switch 40 is provided at the bottom of the pit 1a. When the limiting body 21 is in the storage position, the storage detection switch 40 is activated by the limiting body 21. When the limiting body 21 leaves the storage position, the limiting body 21 leaves the storage detection switch 40, and the storage detection switch 40 becomes deactivated.

[0045] When the storage detection switch 40 is in the off state, the automatic operation of car 2 is prohibited. The automatic operation of car 2 is a method of automatically moving car 2 to the destination floor based on call calls from inside car 2 and from multiple floors.

[0046] Figure 5 It is shown in magnification Figure 4 A side view of the main part. Although in Figure 4 The details are omitted, but a switch support component 41 is fixed to the car guide rail 3. The storage detection switch 40 is supported by the switch support component 41. The switch support component 41 is configured so as not to interfere with the limit body 21 when the limit body 21 is in the storage position.

[0047] Figure 6 It is shown in magnification Figure 1 A perspective view of the main components of the elevator, showing the state of the restraining body 21 just before it moves to the restraining position. Each fixed-side mechanism 23 of Embodiment 1 has a support plate 25 and multiple fasteners (not shown). The support plate 25 is fixed to the car guide rail 3 by the multiple fasteners.

[0048] Although Figures 1-4 The details are omitted, but a pair of movable side mechanisms 26 are provided on the limiting body 21. Figure 6 In the image, only one of the pair of movable side mechanisms 26 is shown.

[0049] Each movable side mechanism 26 includes a mounting component 27, a rotating shaft 28, a rotating component 29, multiple hinges 30, an opening and closing component 31, a first return spring 32, and a second return spring 33. The second return spring 33 is not included. Figure 6 As shown in the figure, while Figure 11 and Figure 12 As shown in the image.

[0050] Mounting component 27 is mounted on the lower part of the limiting body 21. Rotating component 29 is connected to mounting component 27 in a manner that allows it to rotate relative to mounting component 27 about a rotation axis 28. The rotation axis 28 is parallel to and horizontally arranged in the front-rear direction of the car 2.

[0051] The opening / closing member 31 is rotatably connected to the rotating member 29 via a plurality of hinges 30. The rotation centers of the plurality of hinges 30 are parallel to the vertical direction. That is, the opening / closing member 31 is connected to the rotating member 29 in a manner that allows it to rotate relative to the rotating member 29 about an axis parallel to the vertical direction.

[0052] An inclined surface 31a is provided at the upper end of the opening / closing member 31. The inclined surface 31a is inclined relative to the horizontal plane in a direction that continuously descends as it leaves the rotating member 29.

[0053] The first restoring spring 32 is disposed between the limiting body 21 and the rotating member 29. Furthermore, the first restoring spring 32 applies a force to the rotating member 29, causing the rotating member 29 to rotate upwards. That is, the first restoring spring 32 applies a force to the rotating member 29, causing the rotating member 29 to rotate in the direction that displaces the opening / closing member 31 upwards. In Embodiment 1, the first restoring spring 32 is a tension spring.

[0054] An anti-rotation member 27a is provided on the mounting component 27, which limits the rotation range of the rotating component 29 in the direction of upward displacement of the opening and closing component 31. That is, the upward rotation range of the rotating component 29 is limited by the anti-rotation member 27a.

[0055] The second restoring spring 33 is disposed between the rotating component 29 and the opening / closing component 31. Through the restoring force of the second restoring spring 33, when viewed from directly above, the rotating component 29 and the opening / closing component 31 are held in a straight line parallel to the width direction of the car 2. In Embodiment 1, the second restoring spring 33 is a tension spring.

[0056] When the limiting body 21 moves upward, the opening and closing member 31 abuts against the support plate 25, and the rotating member 29 rotates downward by means of the support plate 25 overcoming the first restoring spring 32. Thus, the rotating member 29 and the opening and closing member 31 pass through the support plate 25.

[0057] With the rotating component 29 and the opening / closing component 31 passing upward through the support plate 25, the rotating component 29 returns to its original position, i.e., the position where it intersects with the support plate 25 when viewed from directly above, by means of the first restoring spring 32. Therefore, when the limiting body 21 is moved downward, the opening / closing component 31 abuts against the support plate 25, and the downward movement of the movable side mechanism 26 is restricted by the support plate 25.

[0058] The pit operation auxiliary device of Embodiment 1 has a limiting body 21, a pair of guiding members 22, a pair of stopping mechanisms 34, and a pair of release lines 35 as release operation members.

[0059] Each stop mechanism 34 has a fixed side mechanism 23 and a movable side mechanism 26. Furthermore, when the limiting body 21 moves to the limiting position, a pair of stop mechanisms 34 restrict the limiting body 21 from moving downwards. Figure 6 In the image, only one of the pair of stop mechanisms 34 is shown.

[0060] Each release wire 35 is connected to the corresponding stop mechanism 34. Figure 6 Only one of the pair of release lines 35 is shown. Furthermore, in... Figures 1-4 The pair of release lines 35 are omitted in the text.

[0061] Each release wire 35 has a first end 35a and a second end 35b. The first end 35a is connected to the corresponding opening / closing member 31. The second end 35b is connected to the limiting body 21. Furthermore, the second end 35b may also be detachable from the limiting body 21.

[0062] The operation releases the release line 35, causing the opening / closing member 31 to rotate relative to the rotating member 29, thereby releasing the restriction state of the stop mechanism 34 on the limiting body 21.

[0063] Figure 7 Is only shown Figure 6 A perspective view of the stop mechanism 34. (From...) Figure 7 When the state causes the limiting body 21 to rise, the movable side mechanism 26 also moves upward, such as... Figure 8 As shown, the inclined surface 31a abuts against the lower surface of the support plate 25.

[0064] The support plate 25 is fixed to the car guide rail 3. Therefore, the rotating component 29 and the opening / closing component 31 overcome the first restoring spring 32 and rotate downward about the rotation axis 28, that is, towards... Figure 8 Rotate clockwise.

[0065] From Figure 8 When the state causes the limiting body 21 to rise further, such as Figure 9 As shown, the opening and closing component 31 passes through the support plate 25. When the opening and closing component 31 passes through the support plate 25, with the help of the restoring force of the first restoring spring 32, the rotating component 29 and the opening and closing component 31 rotate upward, that is, towards... Figure 9 Rotate counterclockwise until the rotating part 29 comes into contact with the anti-rotation part 27a.

[0066] From Figure 9 When the state causes the limiting body 21 to descend, such as Figure 10 As shown, the lower surface of the opening / closing member 31 abuts against the upper surface of the support plate 25, restricting the movable side mechanism 26 from moving to a position below the upper surface of the support plate 25. In this state, the restrictor 21 is supported on a pair of support plates 25. Thus, the restrictor 21 is held in the restricted position.

[0067] Figure 11 From and Figure 10 Observe from different angles Figure 10 A three-dimensional view of the stop mechanism 34. Figure 12 It shows that Figure 11 A perspective view of the state of the opening / closing component 31 after it has rotated relative to the rotating component 29.

[0068] When the work in pit 1a is completed, the operator returns from pit 1a to the lowest level station and pulls out all release lines 35 from the lowest level station. Thus, as... Figure 12 As shown, the opening and closing component 31 rotates relative to the rotating component 29, and the opening and closing component 31 moves from the support plate 25 to outside the support plate 25.

[0069] In this state, the restraints on the limiting body 21 by each stop mechanism 34 are released, and the limiting body 21 can move from the restricted position to the storage position by its own weight. At this time, the operator can also adjust the descent speed of the limiting body 21 by operating the setting line 24.

[0070] In this type of elevator and its pit operation auxiliary device, the restraint body 21 can be moved from the storage position to the restraint position by an operator located at the landing using the setting line 24. Furthermore, when the restraint body 21 is in the restraint position, it restricts the car 2 from moving to a position lower than the restraint position.

[0071] Furthermore, when the limiting body 21 moves to the limiting position, the stop mechanism 34 restricts the limiting body 21 from moving downward. Additionally, the stop mechanism 34 can be released from the limiting state of the limiting body 21 by an operator located at the floor using the release line 35.

[0072] Therefore, before commencing work in pit 1a, the operator can use the control station to move the restraint body 21 to its restricted position, ensuring sufficient retreat space within pit 1a. Furthermore, after commencing work in pit 1a, the operator can use the control station to return the restraint body 21 to its storage position. This reduces the workload within pit 1a and improves the efficiency of maintenance operations.

[0073] In addition, pit operation auxiliary devices can be easily added to existing elevators.

[0074] Furthermore, without carrying out construction work to deepen the pit 1a, the retreat space can be increased.

[0075] Furthermore, the restraint body 21 can move along a pair of car guide rails 3. Therefore, the restraint body 21 can be moved stably using the existing pair of car guide rails 3.

[0076] Furthermore, a setting line 24 is used as the setting operation component. Therefore, the setting operation component can be made lightweight, and it can be easily configured within the shaft 1.

[0077] Furthermore, a release line 35 is used as the release operation component. Therefore, the release operation component can be made lightweight, and it can be easily installed within the wellbore 1.

[0078] In addition, the stop mechanism 34 has Figure 6 The fixed side mechanism 23 and the movable side mechanism 26 are shown. Therefore, the limiting body 21 can be moved downwards by a simple structure, and the limiting state of the limiting body 21 can be released.

[0079] Furthermore, when the limiting body 21 is in the storage position, the storage detection switch 40 is activated by the limiting body 21. Therefore, it is possible to quickly detect when the limiting body 21 leaves the storage position using a simple structure.

[0080] Implementation Method 2

[0081] then, Figure 13 This is a structural diagram showing the main parts of the pit operation auxiliary device according to Embodiment 2. The pit operation auxiliary device of Embodiment 2, based on the same structure as Embodiment 1, includes a telescopic gangway 42. The telescopic gangway 42 can extend and retract along with the movement of the restraint body 21 in the vertical direction.

[0082] The telescopic gangway 42 has a gangway body 42a and a pair of connecting bodies 42b. The pair of connecting bodies 42b connect the upper end of the gangway body 42a and the limiting body 21. Each connecting body 42b uses a flexible rope-like component, such as a connecting line. The lower end of the gangway body 42a is connected to the bottom of the pit 1a.

[0083] Figure 13 The diagram shows the state where the restraint body 21 is in the restricted position. When the restraint body 21 is in the restricted position, the gangway body 42a is stretched between the restraint body 21 and the bottom of the pit 1a. At this time, the upper end of the gangway body 42a is adjacent to the landing sill 13. In this state, the operator can use the gangway body 42a to move between the lowest landing and the pit 1a.

[0084] Although not illustrated, the telescopic gangway 42 is folded by moving the restraining body 21 from the restrained position to the storage position. At this time, the telescopic gangway 42 does not obstruct the movement of the restraining body 21 from the restrained position to the storage position.

[0085] Except for the telescopic gangway 42, the structure of the pit operation auxiliary device and the elevator are the same as in embodiment 1.

[0086] In this pit operation assistance device, a telescopic gangway 42 is connected to the restraint body 21, which can further reduce the workload in the pit 1a and further improve the efficiency of maintenance operations.

[0087] Implementation Method 3

[0088] then, Figure 14 This is a structural diagram showing the main parts of the pit operation auxiliary device according to Embodiment 3. The pit operation auxiliary device of Embodiment 3, based on the same structure as Embodiment 1 or Embodiment 2, includes an intrusion prevention cover 43. The intrusion prevention cover 43 can extend and retract as the restraining body 21 moves in the up-down direction.

[0089] The upper end of the intrusion prevention cover 43 is connected to the limiting body 21. The lower end of the intrusion prevention cover 43 is connected to the bottom of the pit 1a. The intrusion prevention cover 43 extends by moving towards the limiting position through the limiting body 21.

[0090] Figure 14 The diagram shows the state where the restrictor 21 is in the restricted position. When the restrictor 21 is in the restricted position, the intrusion prevention cover 43 is positioned between the work area and the intrusion prohibition area within the pit 1a. The work area is the area where the operator performs work. The intrusion prohibition area is the area where the operator is prohibited from entering, such as the area directly below the counterweight.

[0091] Although not illustrated, the intrusion prevention cover 43 is folded by moving the restrictor 21 from the restricting position to the storage position. At this time, the intrusion prevention cover 43 does not obstruct the movement of the restrictor 21 from the restricting position to the storage position.

[0092] Except for the intrusion prevention cover 43, the structure of the pit operation auxiliary device and the elevator are the same as in Embodiment 1 or Embodiment 2.

[0093] In this pit operation assistance device, the retractable intrusion prevention cover 43 is connected to the restraint body 21, thus reducing the labor and time required to install the intrusion prevention barrier in the pit 1a. This further reduces the workload in the pit 1a and improves the efficiency of maintenance work.

[0094] Furthermore, the operating component is not limited to the installation line 24. However, it is preferable to install the operating component as a flexible, rope-like component.

[0095] Furthermore, the release operation component is not limited to the release line 35. However, it is preferable that the release operation component is a flexible, rope-like component.

[0096] Alternatively, the guide rails that guide the movement of the restraint body 21 can be installed in the hoistway 1 separately from a pair of car guide rails 3.

[0097] Furthermore, the location of the restriction is not limited to the examples mentioned above. For instance, depending on the depth of pit 1a, the location of the restriction may also be lower than the ground level 11 of the lowest level station.

[0098] Furthermore, there are no particular restrictions on the overall layout of the elevator. For example, the rope winding method can be a 1:1 rope winding method or a 2:1 rope winding method. Additionally, in Figure 1 From the perspective of the landing station, the counterweight lifting area is located behind the lifting area of ​​car 2. However, from the perspective of the landing station, the counterweight lifting area can also be located to the side of the lifting area of ​​car 2.

[0099] In addition, elevators can also be elevators with machine rooms, machine-room-less elevators, double-decker elevators, and single-shaft multi-car elevators. A single-shaft multi-car elevator is one in which the upper car and the lower car, located directly below the upper car, move independently within a common shaft.

[0100] Label Explanation

[0101] 1: Hoistway; 1a: Pit; 2: Car; 3: Car guide rail; 21: Limiting body; 23: Fixed side mechanism; 24: Installation line (installation of operating components); 25: Support plate; 26: Movable side mechanism; 27: Mounting component; 28: Rotating shaft (horizontally arranged shaft); 29: Rotating component; 31: Opening and closing component; 32: First return spring; 34: Stopping mechanism; 35: Release line (release of operating components); 40: Storage detection switch; 42: Telescopic gangway; 43: Intrusion prevention cover.

Claims

1. An auxiliary device for pit operations of an elevator, wherein, The pit operation auxiliary device for the elevator has the following features: A limiting body that can move along a guide rail provided in the hoistway between a storage position in the pit of the hoistway and a limiting position above the storage position. When in the limiting position, the car is limited to a position below the limiting position. An operating component is provided, which is connected to the limiting body and can be operated from the floor station; A stop mechanism having a fixed side mechanism disposed on the guide rail and a movable side mechanism disposed on the limiting body, wherein when the limiting body moves to the limiting position, the stop mechanism restricts the limiting body from moving downward; and The operating component, which is connected to the stop mechanism, can be disengaged and operated from the landing station. The restrictor can be moved from the storage location to the restricted location by the operator located at the floor using the setting operation component. The stop mechanism allows the operator at the floor station to release the restriction on the restrictor using the release operation component.

2. The elevator pit operation auxiliary device according to claim 1, wherein, The guide rail is a car guide rail that guides the lifting and lowering of the car.

3. The elevator pit operation auxiliary device according to claim 1 or 2, wherein, The setting operation component is a flexible, rope-like component.

4. The elevator pit operation auxiliary device according to any one of claims 1 to 3, wherein, The release mechanism is a flexible, rope-like component.

5. The elevator pit operation auxiliary device according to any one of claims 1 to 4, wherein, The fixed-side mechanism has a support plate fixed to the guide rail. The movable side mechanism has: Mounting components are mounted on the limiting body; A rotating component is connected to the mounting component in a manner that allows it to rotate relative to the mounting component about a horizontally configured axis. as well as A restoring spring applies a force to the rotating component, causing it to rotate upwards. The upward rotation range of the rotating component is limited. As the limiting body moves upward, the rotating component rotates downward against the restoring spring by means of the support plate, thereby passing through the support plate. When the rotating component passes the support plate upwards, the rotating component returns to its original position by means of the return spring, thereby restricting the downward movement of the movable side mechanism by the support plate.

6. The elevator pit operation auxiliary device according to claim 5, wherein, The movable side mechanism also includes an opening and closing component, which is connected to the rotating component in a manner rotatable relative to the rotating component about an axis parallel to the vertical direction, and is also connected to the release operation component. By operating the release mechanism, the opening / closing mechanism is rotated relative to the rotating mechanism, thereby releasing the restraining state of the stopping mechanism on the limiting body.

7. The elevator pit operation auxiliary device according to any one of claims 1 to 6, wherein, The pit operation auxiliary device of the elevator also has a storage detection switch that is operated by the limiting body when the limiting body is in the storage position.

8. The elevator pit operation auxiliary device according to any one of claims 1 to 7, wherein, The pit operation auxiliary device of the elevator also has a telescopic gangway, which is connected to the limiting body and can extend and retract as the limiting body moves in the up and down directions.

9. The pit operation auxiliary device for an elevator according to any one of claims 1 to 8, wherein, The elevator pit operation auxiliary device also includes an intrusion prevention cover, which is connected to the limiting body and can extend and retract as the limiting body moves in the up and down directions. The intrusion prevention cover extends by moving the restrictor to the restricted position and is positioned between the working area and the intrusion prohibition area within the pit.

10. An elevator, wherein, The elevator has a pit operation auxiliary device as described in any one of claims 1 to 9.

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