Work platform device for mounting elevator and mounting method

Abstract

The purpose of the present disclosure is to obtain a work platform device for mounting an elevator and a mounting method, which can reduce the labor of mounting work. The work platform device body (70) is provided with a car floor (31), an emergency stop device (24), an upper frame (33), a handrail device (34), a pair of short columns (71) and an emergency stop lifting device (72). The car floor (31), the emergency stop device (24), and the upper frame (33) are formal settings used by the mounted car (17). The length of each of the pair of short columns (71) is shorter than the length of each of the pair of vertical columns (32) used by the mounted car.

Description

Technical Field

[0001] This disclosure relates to an elevator installation platform device and installation method. Background Technology

[0002] In conventional elevator installation methods, scaffolding is assembled inside the shaft. Then, using the scaffolding, a lifting device is installed at the top of the shaft. Additionally, using the scaffolding, a pair of car guide rails and a pair of counterweight guide rails are installed inside the shaft (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-8805 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the conventional elevator installation method described above, the scaffolding is assembled from the bottom to the top of the shaft. Therefore, considerable effort is required to move the many components of the scaffolding into the shaft, assemble the scaffolding, disassemble the scaffolding, and move it out.

[0008] This disclosure was made to solve the aforementioned problems, and its purpose is to provide an elevator installation platform device and installation method that can reduce the time required for installation work.

[0009] Methods for solving problems

[0010] The elevator installation platform device disclosed herein comprises: a lifting device having a lifting device body disposed on the upper part of the building and a hanging body connected to the lifting device body; and a working platform device body suspended in the hoistway by the hanging body and lifted by the lifting device, the working platform device body comprising: a car floor; an emergency stop device disposed on the car floor; a pair of short columns disposed on both sides of the car floor; an upper frame having the pair of short columns mounted above the car floor; and a handrail device mounted on the upper frame, wherein the length of each of the pair of short columns is shorter than the length of each of the pair of longitudinal columns used in the installed car.

[0011] The elevator installation method disclosed herein includes the following steps: placing the bottom pair of guide rail components in the shaft; assembling the main body of the work platform device in the pit of the shaft; and moving the main body of the work platform device in the vertical direction by means of a lifting device located at the top of the shaft, placing multiple guide rail components other than the bottom pair of guide rail components in the shaft. The main body of the work platform device includes: a car floor; an emergency stop device located on the car floor; a pair of short columns located on both sides of the car floor; an upper frame mounted on the pair of short columns above the car floor; and a handrail device mounted on the upper frame. The length of each of the pair of short columns is shorter than the length of each of the pair of longitudinal columns used in the installed car. The emergency stop device is activated when the main body of the work platform device stops, and deactivated when the main body of the work platform device moves in the vertical direction.

[0012] Invention Effects

[0013] According to this disclosure, the time required for installation work can be reduced. Attached Figure Description

[0014] Figure 1 This is a schematic structural diagram of the elevator according to embodiment 1.

[0015] Figure 2 It is a schematic representation Figure 1 An illustration showing the elevator installation process.

[0016] Figure 3 It means Figure 2 A three-dimensional view of the lifting frame and lifting device.

[0017] Figure 4 It means Figure 2 A three-dimensional view of the main body of the work platform device.

[0018] Figure 5 It means Figure 2 A block diagram of the main parts of the installation platform device.

[0019] Figure 6 This is a schematic diagram illustrating the installation method of the elevator according to Embodiment 1.

[0020] Figure 7 It means that the operator took a ride to Figure 4 A three-dimensional view of the main body of the work platform device.

[0021] Label Explanation

[0022] 11: Hoistway; 19a: Guide rail component; 24: Emergency stop device; 31: Car floor; 32: Longitudinal column; 33: Upper frame; 34: Handrail device; 40: Installation platform device; 50: Lifting frame; 51: Setting part; 52: Protrusion; 60: Lifting device; 61: Lifting device body; 62: Hanging body; 70: Work platform device body; 71: Short column; 72: Emergency stop lifting device; 81: Controller; 82: Tension detector. Detailed Implementation

[0023] The embodiments will now be described with reference to the accompanying drawings.

[0024] Implementation method 1.

[0025] Figure 1 This is a schematic structural diagram of the elevator according to Embodiment 1. The elevator of Embodiment 1 is a machine-room-less elevator with a 2:1 rope winding method. In the diagram, a support beam 12 and a main control device 15 are provided at the top of the shaft 11.

[0026] A traction machine 13 is supported by a support beam 12. The traction machine 13 includes a drive sheave 14, a traction machine motor (not shown), and a traction mechanism brake (not shown). The traction machine motor rotates the drive sheave 14. The traction mechanism brake keeps the drive sheave 14 stationary. In addition, the traction mechanism brakes the rotation of the drive sheave 14.

[0027] A suspension body 16 is wound on the drive pulley 14. Multiple ropes or multiple belts are used as the suspension body 16.

[0028] The car 17 and counterweight 18 are suspended within the hoistway 11 by the suspension body 16. Furthermore, the car 17 and counterweight 18 move up and down within the hoistway 11 by rotating the drive sheave 14. The main control unit 15 controls the raising and lowering of the car 17 by controlling the traction machine 13.

[0029] A pair of car guide rails 19 and a pair of counterweight guide rails 20 are installed inside the hoistway 11. Figure 1 Only one of the pair of car guide rails 19 is shown in the image. Additionally, in... Figure 1 In the figure, the upper parts of one of the car guide rails 19 and the pair of counterweight guide rails 20 are omitted.

[0030] A pair of car guide rails 19 guide the lifting and lowering of the car 17. A pair of counterweight guide rails 20 guide the lifting and lowering of the counterweight 18.

[0031] The car 17 has a car frame 21, a car compartment 22, a car door device 23, an emergency stop device 24, and a pair of car suspension wheels 25.

[0032] The car frame 21 has a car floor 31, a pair of longitudinal columns 32, and an upper frame 33. Figure 1 The image shows only one of the pair of longitudinal columns 32. The car floor 31 is fixed between the lower ends of the pair of longitudinal columns 32. The upper frame 33 is fixed above the car floor 31 between the pair of longitudinal columns 32. The upper frame 33 is rectangular in shape; that is, the upper frame 33 is a square frame.

[0033] The car compartment 22 is supported on the car floor 31. A car entrance / exit (not shown) is provided on the front surface of the car compartment 22. A car door device 23 opens and closes the car entrance / exit.

[0034] An emergency stop device 24 is located under the car floor 31. The emergency stop device 24 brakes the downward movement of the car 17 by holding a pair of car guide rails 19. The emergency stop device 24 has a wedge (not shown). The emergency stop device 24 is activated by raising the wedge.

[0035] A pair of car suspension wheels 25 are located under the car floor 31. Figure 1 Only one of the pair of car suspension wheels 25 is shown in the image. A suspension body 16 is wound around the pair of car suspension wheels 25.

[0036] The counterweight 18 has a counterweight body 26 and a counterweight suspension wheel 27. The counterweight suspension wheel 27 is located on the upper part of the counterweight body 26. A suspension body 16 is wound around the counterweight suspension wheel 27.

[0037] Each of the multi-level stations is equipped with a station door device 28. At each station, the station door device 28 opens and closes the station entrance / exit. In addition, at each station, the station door device 28 opens and closes in conjunction with the car door device 23 when the car 17 stops at a floor.

[0038] Figure 2 It is a schematic representation Figure 1 This diagram illustrates the elevator installation process. An installation work platform device 40 is installed within the building. The installation work platform device 40 includes a lifting frame 50, a lifting device 60, and a work platform device body 70.

[0039] The lifting frame 50 is located at the uppermost level. The lifting frame 50 also includes a mounting section 51, a protrusion 52, and a pulley 53. The mounting section 51 is the part of the lifting frame 50 located at the uppermost level. The protrusion 52 protrudes from the mounting section 51 into the shaft 11. The pulley 53 is located on the protrusion 52.

[0040] The lifting device 60 is supported on the lifting frame 50. For example, an electric chain trolley is used as the lifting device 60.

[0041] The lifting device 60 has a lifting device body 61 and a hanging body 62. The lifting device body 61 is provided in the mounting section 51. The hanging body 62 is connected to the lifting device body 61 and is sent into the hoistway 11. The hanging body 62 is, for example, a wire rope or chain.

[0042] A pulley 53 is provided at the protrusion 52. A hanging body 62 is wound around the pulley 53.

[0043] The main body 70 of the work platform is connected to the lower end of the hanging body 62 within the shaft 11. That is, the main body 70 of the work platform is suspended within the shaft 11 by the hanging body 62. The main body 70 of the work platform is lifted by the lifting device 60.

[0044] Figure 3 It means Figure 2 A perspective view of the lifting frame 50 and lifting device 60. The mounting section 51 is fixed to the uppermost station by multiple anchor bolts (not shown). The hoisting body 62 is horizontally sent out from the lifting device body 61 into the shaft 11, and then bends vertically downward through pulleys 53 to reach the working platform device body 70.

[0045] The lifting device 60 may also include other cranes (not shown) that are lifted by the lifting device body 61 to the top of the shaft 11.

[0046] Figure 4 It means Figure 2 A perspective view of the main body 70 of the work platform device. The main body 70 of the work platform device includes a car floor 31, an emergency stop device 24, an upper frame 33, a handrail device 34, a pair of short columns 71, and an emergency stop lifting device 72.

[0047] The car floor 31, emergency stop device 24, and upper frame 33 are standard installations used in the installed car 17. Additionally, although in Figure 1 The details are omitted, but the handrail device 34 is also a formal installation. A pair of short columns 71 and an emergency stop lifting device 72 are temporary installations not used in the car 17 after installation.

[0048] The emergency stop device 24 is located at the lower part of the car floor 31, just like the installed car 17. In this example, a pair of car suspension wheels 25 are also provided at the lower part of the car floor 31, just like the installed car 17.

[0049] A pair of short posts 71 are disposed on both sides of the car floor 31. That is, the car floor 31 is disposed between the pair of short posts 71. In addition, the pair of short posts 71 are fixed to the car floor 31 in a parallel and opposite manner. Furthermore, the pair of short posts 71 are located between the pair of car guide rails 19 and the car floor 31.

[0050] The length of each pair of short columns 71 is shorter than the length of each pair of longitudinal columns 32 used in the installed car 17. For example, the length of each pair of short columns 71 is less than half the length of each pair of longitudinal columns 32.

[0051] The hanging body 62 branches into multiple sections above the main body 70 of the work platform device, and connects to a pair of short columns 71. That is, the pair of short columns 71 respectively serve as the hanging parts for lifting the main body 70 of the work platform device.

[0052] The upper frame 33 is mounted on a pair of short posts 71. The armrest assembly 34 is mounted on the upper frame 33. Furthermore, the armrest assembly 34 can be deformed between its active and stowed states. Figure 4 As shown, the usage state is the upright state. The storage state is the state in which it is folded down on the car compartment 22 after installation in the car 17.

[0053] An emergency stop lifting device 72 is mounted on the upper frame 33. The emergency stop lifting device 72 lifts the wedge by receiving a work command signal, thereby activating the emergency stop device 24. That is, the emergency stop device 24 is operated mechanically by the emergency stop lifting device 72.

[0054] The emergency stop lifting device 72, for example, has an electrically powered winding device and a working wire. The working wire is connected between the winding device and the emergency stop device 24. The emergency stop device 24 operates by winding the working wire using the winding device.

[0055] Although Figure 2 The details are omitted, but the installation platform device 40 also includes a controller 81 and a tension detector 82.

[0056] The controller 81 is installed on the handrail device 34. The operator sitting on the car floor 31 inputs commands to the controller 81. Based on the input commands, the controller 81 controls the lifting device 60 and the emergency stop lifting device 72.

[0057] Furthermore, when the main body 70 of the work platform device stops, the controller 81 activates the emergency stop device 24 via the emergency stop lifting device 72. Additionally, the controller 81 deactivates the emergency stop device 24 activated by the emergency stop lifting device 72 when the main body 70 of the work platform device moves in the vertical direction. Specifically, the activation of the emergency stop device 24 is deactivated by moving the main body 70 of the work platform device upwards after the activation of the emergency stop lifting device 72 is deactivated.

[0058] Tension detector 82 is installed at a branch of the suspension body 62. Tension detector 82 detects the tension acting on the suspension body 62. For example, a force sensor may be used as tension detector 82. The detection signal from tension detector 82 is sent to controller 81.

[0059] A tension setpoint is preset in the controller 81. When the tension detected by the tension detector 82 is below the tension setpoint, the controller 81 activates the emergency stop device 24 via the emergency stop lifting device 72.

[0060] For example, in the event of a breakage of the suspension body 62, the tension detected by the tension detector 82 is close to zero, i.e., below the tension set value. In this case, the controller 81 activates the emergency stop device 24 via the emergency stop lifting device 72.

[0061] Although Figure 1 The details are omitted, but each car guide rail 19 is formed by joining multiple guide rail components 19a in the vertical direction.

[0062] Figure 5 It means Figure 2 A block diagram of the main components of the installation platform device 40. Power is supplied from the building's commercial power supply 84 to the controller 81.

[0063] Additionally, a portable switch 83 is connected to the controller 81. The operator can input commands to the controller 81 by operating the portable switch 83. This allows the operator to move the main body 70 of the work platform device vertically. Furthermore, the operating status of the emergency stop device 24, implemented by the emergency stop lifting device 72, can also be controlled by inputting commands from the controller 81.

[0064] Next, the elevator installation method of Embodiment 1 will be described. Figure 6 This is a schematic diagram illustrating the installation method of the elevator according to Embodiment 1.

[0065] In the installation method of Embodiment 1, in step S101, a lifting frame 50 is installed on the uppermost layer station. Next, in step S102, a lifting device 60 is installed on the lifting frame 50.

[0066] Next, in step S103, the lowest pair of guide rail components 19a are installed in the pit of the shaft 11. During the work in the pit, a movable work platform, also known as a ladder, is used. That is, there is no need to assemble scaffolding inside the shaft 11 for installing the second and subsequent guide rail components 19a.

[0067] Next, in step S104, the main body 70 of the work platform device is assembled in the pit of the shaft 11. Then, the hanging body 62 is connected to a pair of short columns 71, as follows: Figure 7 As shown, the worker boards the main body 70 of the work platform device. Then, in step S105, the main body 70 of the work platform device is lifted by the lifting device 60.

[0068] Subsequently, in step S106, the main body 70 of the work platform device is moved up and down by the lifting device 60, and multiple guide rail components 19a other than the pair of guide rail components 19a at the bottom are placed in the shaft 11.

[0069] At this time, when the main body 70 of the work platform device is stopped and work is carried out, the emergency stop device 24 is activated by the emergency stop lifting device 72. Conversely, when the main body 70 of the work platform device is moved in the vertical direction, the emergency stop device 24 is deactivated.

[0070] Then, a pair of counterweight guide rails 20, support beams 12, traction machine 13, main control device 15, etc. are installed in the shaft 11.

[0071] Next, at the lowest level, a portion of the main body 70 of the work platform device is disassembled, and the formally installed car frame 21 is assembled. Additionally, the counterweight 18 is moved into the hoistway 11. Then, the car frame 21 and the counterweight 18 are suspended using the suspension body 16. Finally, the car room 22 is assembled on the car floor 31.

[0072] In such an elevator installation platform device 40 and installation method, the length of each of the pair of short columns 71 used for the main body 70 of the platform device is shorter than the length of each of the pair of longitudinal columns 32 used for the installed car 17.

[0073] Therefore, the main body 70 of the work platform device can be assembled between the pair of guide rail components 19a at the bottom. Thus, it is not necessary to assemble scaffolding for installing the guide rail components 19a at the second and subsequent sections within the shaft 11, which can significantly reduce the time required for installation work.

[0074] In addition, it can reduce costs such as scaffolding rental and transportation fees.

[0075] In addition, an emergency stop device 24 is provided on the main body 70 of the work platform device. Therefore, the main body 70 of the work platform device can be stably stopped in the wellbore 11 for operation, thereby improving workability.

[0076] In addition, an emergency stop lifting device 72 is provided on the main body 70 of the work platform device. Therefore, the emergency stop device 24 can be easily operated, which can improve the workability of the installation operation.

[0077] Furthermore, the controller 81 activates the emergency stop device 24 when the main body 70 of the work platform device stops, and deactivates the emergency stop device 24 when the main body 70 of the work platform device moves in the up and down direction. Therefore, the workability of the installation operation can be improved.

[0078] Furthermore, when the tension detected by the tension detector 82 falls below the set tension value, the controller 81 activates the emergency stop device 24 via the emergency stop lifting device 72. Therefore, even if the tension of the hoist body 62 decreases, the main body 70 of the work platform device can be stopped.

[0079] In addition, the lifting frame 50 has a mounting section 51 and a protrusion 52. Therefore, there is no need to install a top working platform, which can further reduce the effort required for installation.

[0080] Furthermore, the car floor 31, emergency stop device 24, upper frame 33, and handrail device 34 used by the main body 70 of the work platform are the formal installations used in the car 17 after installation. Therefore, the number of temporary installations that need to be moved into the hoistway 11 during installation can be reduced, further reducing the time required for installation work.

[0081] In addition, the suspension body 62 is connected to a pair of short columns 71. Therefore, it is possible to stably lift the main body 70 of the work platform device.

[0082] In addition, the main body 70 of the work platform device can also be lifted by multiple lifting devices 60.

[0083] In addition, during installation, the emergency stop device 24 can be kept in the working state at all times, and the operator can ride on the main body 70 of the work platform device only when the brake of the emergency stop device 24 is released and the work platform device body 70 moves upward.

[0084] Alternatively, during installation work, the operator may ride on the main body 70 of the work platform only when the emergency stop device 24 is activated. In this case, the lifting device 60 is operated by a portable switch device external to the main body 70 of the work platform.

[0085] The preferred embodiments have been described in detail above, but are not limited to the embodiments described above. Various modifications and substitutions can be made to the embodiments described above without departing from the scope of the claims.

[0086] The various methods disclosed herein are summarized below as appendices.

[0087] (Postscript 1)

[0088] An elevator installation platform device, comprising:

[0089] A lifting device having a main body installed on the upper part of a building and a suspension body connected to the main body of the lifting device; and

[0090] The main body of the work platform is suspended inside the shaft by the hanging body and is lifted by the lifting device.

[0091] The main body of the work platform device has:

[0092] Car floor;

[0093] An emergency stop device is installed on the car floor;

[0094] A pair of short columns are provided on both sides of the car floor;

[0095] The upper frame, which is mounted above the car floor on the pair of short columns; and

[0096] The handrail device is installed on the upper frame.

[0097] The length of each of the pair of short columns is shorter than the length of each of the pair of longitudinal columns used in the installed car.

[0098] (Postscript 2)

[0099] According to the elevator installation work platform device described in Appendix 1, wherein,

[0100] The main body of the work platform device also has an emergency stop lifting device that enables the emergency stop device to operate.

[0101] (Note 3)

[0102] According to Appendix 2, the elevator installation platform device, wherein,

[0103] The elevator installation platform device also includes a controller for controlling the emergency stop lifting device.

[0104] The controller activates the emergency stop device via the emergency stop lifting device when the main body of the work platform device stops, and deactivates the emergency stop device via the emergency stop lifting device when the main body of the work platform device moves in the up and down direction.

[0105] (Postscript 4)

[0106] According to the elevator installation platform device described in Appendix 3, wherein,

[0107] The elevator installation platform device also includes a tension detector, which is installed on the suspension body to detect the tension acting on the suspension body.

[0108] When the tension detected by the tension detector is below the tension set value, the controller activates the emergency stop device via the emergency stop lifting device.

[0109] (Note 5)

[0110] An elevator installation platform device according to any one of Appendices 1 to 4, wherein,

[0111] The elevator installation platform device also includes a lifting frame, which is located on the top floor, and the lifting device is mounted on the lifting frame.

[0112] The lifting frame has:

[0113] The installation unit is located at the uppermost station; and

[0114] A protrusion that protrudes from the provided portion into the wellbore.

[0115] (Note 6)

[0116] An elevator installation platform device according to any one of Appendices 1 to 5, wherein,

[0117] The car floor, the emergency stop device, the upper frame, and the handrail device are the standard installations used in the car after installation.

[0118] (Note 7)

[0119] An elevator installation platform device according to any one of Appendices 1 to 6, wherein,

[0120] The hanging body is connected to the pair of short columns.

[0121] (Note 8)

[0122] An elevator installation method includes the following steps:

[0123] The bottom pair of guide rail components are installed inside the shaft;

[0124] The main body of the pit assembly work platform device in the wellbore; and

[0125] The main body of the work platform is moved vertically by a lifting device located at the top of the shaft, thereby placing multiple guide rail components, excluding the bottom pair of guide rail components, inside the shaft.

[0126] The main body of the work platform device includes: a car floor; an emergency stop device disposed on the car floor; a pair of short columns disposed on both sides of the car floor; an upper frame mounted above the car floor on the pair of short columns; and a handrail device mounted on the upper frame.

[0127] The length of each of the pair of short columns is shorter than the length of each of the pair of longitudinal columns used in the installed car.

[0128] The emergency stop device is activated when the main body of the work platform device stops, and deactivated when the main body of the work platform device moves up and down.

Claims

1. A work platform device for installation of an elevator, comprising: a hoisting device having a hoisting device main body provided at an upper portion of a building, and a hanger body connected to the hoisting device main body; and a work platform device main body suspended in a hoistway by the hanger body and hoisted by the hoisting device, the work platform device main body having: a car floor; an emergency stop device provided at the car floor; a pair of short columns provided at both sides of the car floor; an upper frame installed at the pair of short columns above the car floor; and a handrail device installed at the upper frame, the pair of short columns each having a length shorter than a length of each of a pair of vertical columns used for an installed car.

2. The work platform device for installation of an elevator according to claim 1, wherein the work platform device main body further has an emergency stop lifting device that activates the emergency stop device.

3. The work platform device for installation of an elevator according to claim 2, further comprising a controller that controls the emergency stop lifting device, the controller activating the emergency stop device by the emergency stop lifting device when the work platform device main body is stopped, and releasing an activated state of the emergency stop device by the emergency stop lifting device when the work platform device main body moves in an up-and-down direction.

4. The work platform device for installation of an elevator according to claim 3, further comprising a tension detector provided at the hanger body that detects a tension acting on the hanger body, the controller activating the emergency stop device by the emergency stop lifting device when the tension detected by the tension detector is equal to or less than a tension set value.

5. The work platform device for installation of an elevator according to any one of claims 1 to 4, further comprising a hoisting frame provided at an uppermost floor landing, the hoisting device being provided at the hoisting frame, the hoisting frame having: a provided portion provided at the uppermost floor landing; and a protruding portion protruding into the hoistway from the provided portion.

6. The work platform device for installation of an elevator according to any one of claims 1 to 5, wherein the car floor, the emergency stop device, the upper frame, and the handrail device are official settings used for the installed car.

7. The work platform device for installation of an elevator according to any one of claims 1 to 6, wherein the hanger body is connected to the pair of short columns.

8. A method for installation of an elevator, comprising the steps of: providing a pair of guide rail members of a lowermost section in a hoistway; and moving a work platform device main body in an up-and-down direction by a hoisting device provided at an upper portion of the hoistway to provide a plurality of guide rail members other than the pair of guide rail members of the lowermost section in the hoistway. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The hoistway's pit assembles the working platform device body; ​ ​ The work platform device main body has: a car floor; an emergency stop device provided on the car floor; a pair of short columns provided on both sides of the car floor; an upper frame installed on the pair of short columns above the car floor; and a handrail device installed on the upper frame, the length of each of the pair of short columns is shorter than the length of each of a pair of longitudinal columns used by the installed car, the emergency stop device is operated when the work platform device main body is stopped, and the operation of the emergency stop device is released when the work platform device main body moves in the up-down direction.

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