Working floor apparatus for installing elevator and method of installing elevator

Abstract

To provide a working floor device for installing an elevator and an installation method capable of reducing labor of installation work.SOLUTION: The work floor apparatus main body 70 has a car floor 31, an emergency stopping apparatus 24, an upper frame 33, a handrail apparatus 34, a pair of short posts 71, and an emergency stopping and lifting apparatus 72. The car floor 31, the safety devices 24, and the upper frame 33 are permanent parts that are used in the car 17 after installation. The length of each of the pair of short pillars 71 is shorter than the length of each of the pair of vertical pillars 32 used in the installed car.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an elevator installation work platform apparatus and installation method. [Background technology]

[0002] In a conventional elevator installation method, a work platform is assembled inside the hoistway. After this, a lifting device is installed at the top of the hoistway using the work platform. A pair of car guide rails and a pair of counterweight guide rails are also installed inside the hoistway using the work platform (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2018-8805 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional elevator installation method described above, the work scaffold is assembled from the bottom to the top of the elevator shaft, which requires a considerable amount of work to transport the many components used in the work scaffold into the elevator shaft, assemble the work scaffold, and dismantle and transport the work scaffold.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator installation work floor device and installation method that can reduce the effort required for installation work. [Means for solving the problem]

[0006] The working floor device for elevator installation according to the present disclosure comprises a lifting device having a lifting device main body provided at the top of a building and a hanging body connected to the lifting device main body, and a working floor device main body suspended in a hoistway by the hanging body and lifted by the lifting device, the working floor device main body having a car floor, an emergency stop device provided on the car floor, a pair of short pillars provided on both sides of the car floor, an upper frame attached to the pair of short pillars above the car floor, and a handrail device attached to the upper frame, and the length of each of the pair of short pillars is shorter than the length of each of the pair of vertical pillars used in the car after installation. The elevator installation method according to the present disclosure includes the steps of installing a pair of lowest rail members in the hoistway, assembling a working floor device main body in a pit of the hoistway, and moving the working floor device main body up and down using a lifting device provided at the top of the hoistway to install multiple rail members other than the pair of lowest rail members in the hoistway, wherein the working floor device main body has a car floor, an emergency stop device provided on the car floor, a pair of short pillars provided on both sides of the car floor, an upper frame attached to the pair of short pillars above the car floor, and a handrail device attached to the upper frame, wherein the length of each of the pair of short pillars is shorter than the length of each of the pair of vertical pillars used in the car after installation, and the emergency stop device is activated when the working floor device main body is stopped and is deactivated when the working floor device main body is moving up and down. [Effects of the Invention]

[0007] According to the present disclosure, the effort required for installation can be reduced. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic configuration diagram showing an elevator according to a first embodiment. [Figure 2] FIG. 2 is an explanatory diagram schematically showing the elevator of FIG. 1 during installation. [Figure 3] FIG. 3 is a perspective view showing the lifting frame and lifting device of FIG. 2. [Figure 4]FIG. 3 is a perspective view showing the work platform device main body of FIG. 2. [Figure 5] FIG. 3 is a block diagram showing the main parts of the installation work platform device of FIG. 2. [Figure 6] FIG. 2 is a schematic process diagram showing an elevator installation method according to the first embodiment. [Figure 7] FIG. 5 is a perspective view showing a state in which an operator has boarded the work platform device main body of FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1 Figure 1 is a schematic diagram showing the configuration of an elevator according to embodiment 1. The elevator of embodiment 1 is a machine room-less elevator of a 2:1 roping system. In the figure, a support beam 12 and a main control device 15 are provided at the top of a hoistway 11.

[0010] A hoisting machine 13 is supported on the support beam 12. The hoisting machine 13 has a drive sheave 14, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the drive sheave 14. The hoisting machine brake keeps the drive sheave 14 stationary. The hoisting machine brake also brakes the rotation of the drive sheave 14.

[0011] A suspension body 16 is wound around the drive sheave 14. The suspension body 16 is formed of a plurality of ropes or a plurality of belts.

[0012] The car 17 and counterweight 18 are suspended within the hoistway 11 by a suspension body 16. The car 17 and counterweight 18 move up and down within the hoistway 11 by rotating the drive sheave 14. The main control device 15 controls the lifting machine 13 to control the lifting and lowering of the car 17.

[0013] A pair of car guide rails 19 and a pair of counterweight guide rails 20 are installed in the hoistway 11. Only one of the pair of car guide rails 19 is shown in Fig. 1. Also, in Fig. 1, the upper portions of one of the car guide rails 19 and the pair of counterweight guide rails 20 are omitted.

[0014] A pair of car guide rails 19 guide the car 17 as it moves up and down. A pair of counterweight guide rails 20 guide the counterweight 18 as it moves up and down.

[0015] The car 17 has a car frame 21, a car chamber 22, a car door device 23, an emergency stop device 24, and a pair of car hoisting wheels 25.

[0016] The car frame 21 has a car floor 31, a pair of vertical pillars 32, and an upper frame 33. In FIG. 1, only one of the pair of vertical pillars 32 is shown. The car floor 31 is fixed between the lower ends of the pair of vertical pillars 32. The upper frame 33 is fixed above the car floor 31 and between the pair of vertical pillars 32. The upper frame 33 is rectangular in shape. In other words, the upper frame 33 is a four-sided frame.

[0017] The car chamber 22 is supported on a car floor 31. A car entrance (not shown) is provided in front of the car chamber 22. A car door device 23 opens and closes the car entrance.

[0018] The safety device 24 is provided below the car floor 31. The safety device 24 grips the pair of car guide rails 19 to stop the downward movement of the car 17. The safety device 24 has a wedge (not shown). The safety device 24 is activated when the wedge is pulled up.

[0019] The pair of car hoisting sheaves 25 are provided below the car floor 31. Only one of the pair of car hoisting sheaves 25 is shown in Fig. 1. A suspension body 16 is wound around the pair of car hoisting sheaves 25.

[0020] The counterweight 18 has a counterweight main body 26 and a counterweight hoisting sheave 27. The counterweight hoisting sheave 27 is provided on the upper part of the counterweight main body 26. The suspended body 16 is wound around the counterweight hoisting sheave 27.

[0021] Each of the landings on multiple floors is provided with a landing door device 28. At each landing, the landing door device 28 opens and closes the landing entrance / exit. Furthermore, at each landing, the landing door device 28 opens and closes in conjunction with the car door device 23 when the car 17 lands on the floor.

[0022] Figure 2 is an explanatory diagram showing a schematic diagram of the elevator in Figure 1 during installation. The building is provided with an installation work floor device 40. The installation work floor device 40 includes a lifting frame 50, a lifting device 60, and a work floor device main body 70.

[0023] The lifting frame 50 is installed at the top floor landing. The lifting frame 50 has an installation part 51, a protruding part 52, and a pulley 53. The installation part 51 is the part of the lifting frame 50 that is installed at the top floor landing. The protruding part 52 protrudes from the installation part 51 into the hoistway 11. The pulley 53 is provided on the protruding part 52.

[0024] The lifting device 60 is supported by the lifting frame 50. As the lifting device 60, for example, an electric chain block is used.

[0025] The lifting device 60 has a lifting device main body 61 and a suspended body 62. The lifting device main body 61 is provided in the installation section 51. The suspended body 62 is connected to the lifting device main body 61 and is reeled out into the hoistway 11. The suspended body 62 is, for example, a wire rope or a chain.

[0026] The pulley 53 is provided on the protruding portion 52. The suspended body 62 is wound around the pulley 53.

[0027] The working floor device main body 70 is connected to the lower end of the suspended body 62 in the hoistway 11. That is, the working floor device main body 70 is suspended in the hoistway 11 by the suspended body 62. The working floor device main body 70 is lifted by the lifting device 60.

[0028] Figure 3 is a perspective view showing the lifting frame 50 and lifting device 60 of Figure 2. The installation section 51 is fixed to the top floor landing with a plurality of anchor bolts (not shown). The suspended body 62 is unwound horizontally from the lifting device main body 61 into the hoistway 11, bent vertically downward by the pulley 53, and reaches the working floor device main body 70.

[0029] The lifting device 60 may include another lifting machine (not shown) that is hoisted to the top of the hoistway 11 by the lifting device body 61 .

[0030] Figure 4 is a perspective view showing the work floor device main body 70 of Figure 2. The work floor device main body 70 has a car floor 31, an emergency stop device 24, an upper frame 33, a handrail device 34, a pair of short pillars 71, and an emergency stop lifting device 72.

[0031] The car floor 31, the safety device 24, and the upper frame 33 are permanent parts that will be used in the car 17 after installation. Although not shown in Fig. 1, the handrail device 34 is also a permanent part. The pair of short pillars 71 and the safety lifting device 72 are temporary parts that will not be used in the car 17 after installation.

[0032] The safety device 24 is provided under the car floor 31, similar to the installed car 17. In this example, a pair of car hoisting wheels 25 are also provided under the car floor 31, similar to the installed car 17.

[0033] The pair of short pillars 71 are provided on both sides of the car floor 31. That is, the car floor 31 is provided between the pair of short pillars 71. The pair of short pillars 71 are fixed to the car floor 31 so as to be parallel to and face each other. The pair of short pillars 71 are also located between the pair of car guide rails 19 and the car floor 31.

[0034] The length of each of the pair of short pillars 71 is shorter than the length of each of the pair of vertical pillars 32 used in the installed car 17. For example, the length of each of the pair of short pillars 71 is half or less of the length of each of the pair of vertical pillars 32.

[0035] The hanging body 62 branches into multiple parts above the working floor device main body 70 and is connected to a pair of short pillars 71. That is, each of the pair of short pillars 71 serves as a hanging point when the working floor device main body 70 is lifted.

[0036] The upper frame 33 is attached to a pair of short pillars 71. The handrail device 34 is attached to the upper frame 33. The handrail device 34 is capable of being transformed between an in-use state and a stored state. The in-use state is an upright state as shown in FIG. 4. The stored state is a state in which the handrail device is laid down onto the car chamber 22 in the car 17 after installation.

[0037] The emergency stop lifting device 72 is attached to the upper frame 33. When an operation command signal is input, the emergency stop lifting device 72 lifts up the wedge and activates the emergency stop device 24. In other words, the emergency stop device 24 is mechanically operated and activated by the emergency stop lifting device 72.

[0038] The safety device lifting device 72 includes, for example, an electric winding device and an operating wire. The operating wire is connected between the winding device and the safety device 24. The safety device 24 is operated by winding the operating wire with the winding device.

[0039] Although not shown in FIG. 2, the installation work platform device 40 further includes a controller 81 and a tension detector 82.

[0040] The controller 81 is attached to the handrail device 34. A command is input to the controller 81 by an operator standing on the car floor 31. The controller 81 controls the lifting device 60 and the emergency stop lifting device 72 based on the input command.

[0041] Furthermore, the controller 81 activates the emergency stop device 24 by the emergency stop lifting device 72 while the working platform device main body 70 is stopped. Furthermore, the controller 81 releases the activation state of the emergency stop device 24 by the emergency stop lifting device 72 while the working platform device main body 70 is moving in the up or down direction. Specifically, the activation state of the emergency stop device 24 is released by moving the working platform device main body 70 in the upward direction after releasing the activation state by the emergency stop lifting device 72.

[0042] The tension detector 82 is provided at a branching portion of the suspended body 62. The tension detector 82 detects the tension acting on the suspended body 62. For example, a load cell is used as the tension detector 82. A detection signal from the tension detector 82 is sent to the controller 81.

[0043] A tension setting value is preset in the controller 81. When the tension detected by the tension detector 82 falls below the tension setting value, the controller 81 activates the safety device 24 by the safety device pulling-up device 72.

[0044] For example, if the suspended body 62 breaks, the tension detected by the tension detector 82 will be close to 0, that is, will be equal to or less than the tension setting value. In this case, the controller 81 activates the safety device 24 by the safety device lifting device 72.

[0045] Although not shown in FIG. 1, each car guide rail 19 is formed by joining a plurality of rail members 19a in the vertical direction.

[0046] Fig. 5 is a block diagram showing the main parts of the installation work platform device 40 of Fig. 2. The controller 81 is supplied with power from a commercial power source 84 of the building.

[0047] A portable switch device 83 is also connected to the controller 81. The worker can input commands to the controller 81 by operating the portable switch device 83. This allows the worker to move the work floor equipment main body 70 in the vertical direction. In addition, the operating state of the safety device 24 by the safety device lifting device 72 may be controlled by inputting commands from the controller 81.

[0048] Next, a description will be given of a method for installing the elevator according to the first embodiment. Fig. 6 is a schematic process chart showing the method for installing the elevator according to the first embodiment.

[0049] In the installation method of the first embodiment, the lifting frame 50 is installed at the top floor landing in step S101. Subsequently, the lifting device 60 is installed on the lifting frame 50 in step S102.

[0050] Thereafter, in step S103, the pair of rail members 19a at the lowest level is installed in the pit of the hoistway 11. A portable work platform, a so-called stand-up horse, is used for work in the pit. In other words, there is no need to assemble a work platform in the hoistway 11 for installing the rail members 19a at the second and subsequent levels.

[0051] Next, in step S104, the working platform device main body 70 is assembled in the pit of the hoistway 11. Subsequently, the suspended body 62 is connected to a pair of short columns 71, and as shown in Fig. 7, a worker gets on top of the working platform device main body 70. Then, in step S105, the working platform device main body 70 is lifted by the lifting device 60.

[0052] Thereafter, in step S106, the work platform device main body 70 is moved up and down by the lifting device 60, and the plurality of rail members 19a other than the pair of rail members 19a at the lowest level are installed in the hoistway 11.

[0053] At this time, when the working platform device main body 70 is stopped to perform work, the safety device 24 is activated by the safety lifting device 72. Furthermore, when the working platform device main body 70 is moved in the vertical direction, the activation state of the safety device 24 is released.

[0054] After this, a pair of counterweight guide rails 20, a support beam 12, a hoisting machine 13, a main control device 15, etc. are installed in the elevator shaft 11.

[0055] After this, on the lowest floor, a portion of the working floor device main body 70 is disassembled, and the permanent car frame 21 is assembled. In addition, the counterweight 18 is carried into the hoistway 11. Then, the car frame 21 and the counterweight 18 are suspended by the suspension body 16. In addition, the car chamber 22 is assembled on the car floor 31.

[0056] In such an elevator installation work floor device 40 and installation method, the length of each of the pair of short columns 71 used in the work floor device main body 70 is shorter than the length of each of the pair of vertical columns 32 used in the car 17 after installation.

[0057] This allows the working platform device main body 70 to be assembled between the pair of lowest-level rail members 19a. Therefore, there is no need to assemble a working platform within the hoistway 11 to install the second and higher levels of rail members 19a, significantly reducing the effort required for installation.

[0058] It also reduces costs such as leasing fees for work scaffolding and transportation fees.

[0059] In addition, the working floor device main body 70 is provided with an emergency stop device 24. This allows the working floor device main body 70 to be stably stopped within the hoistway 11 to perform work, improving workability.

[0060] Furthermore, the work floor device main body 70 is provided with an emergency stop lifting device 72. This allows the emergency stop device 24 to be easily operated, improving the workability of the installation work.

[0061] Furthermore, the controller 81 activates the safety device 24 while the working platform device main body 70 is stopped, and deactivates the safety device 24 while the working platform device main body 70 is moving in the vertical direction. This makes it possible to improve the workability of the installation work.

[0062] Furthermore, when the tension detected by the tension detector 82 falls below the tension setting value, the controller 81 activates the safety device 24 via the safety lifting device 72. Therefore, even if the tension of the suspended body 62 drops, the work platform device main body 70 can be kept stopped.

[0063] Furthermore, the lifting frame 50 has an installation portion 51 and a protruding portion 52. This eliminates the need to install a top work platform, further reducing the effort required for installation work.

[0064] Furthermore, the car floor 31, safety device 24, upper frame 33, and handrail device 34 used in the working floor device main body 70 are permanent parts that will be used on the car 17 after installation. This makes it possible to reduce the number of temporary parts that need to be brought into the hoistway 11 during installation, further reducing the effort required for installation work.

[0065] Furthermore, the hanging body 62 is connected to a pair of short pillars 71. Therefore, the working platform device main body 70 can be lifted stably.

[0066] The work platform device main body 70 may be lifted by a plurality of lifting devices 60.

[0067] In addition, during installation work, the safety device 24 may be kept in a constant operating state, and the worker may only step onto the work floor device main body 70 when the work floor device main body 70 moves upward, at which point the braking provided by the safety device 24 is released.

[0068] Also, during installation work, the worker may step onto the work platform device main body 70 only when the safety device 24 is activated. In this case, the lifting device 60 is operated by a portable switch device outside the work platform device main body 70.

[0069] The above describes in detail preferred embodiments, but the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0070] Various aspects of the present disclosure are summarized below as appendices.

[0071] (Appendix 1) A lifting device having a lifting device body provided on the upper part of a building and a hanging body connected to the lifting device body; A working floor device body suspended in the hoistway by the suspended body and lifted by the lifting device Equipped with The working platform device body is With a basket floor, an emergency stop device provided on the car floor; a pair of short pillars provided on both sides of the car floor; an upper frame attached to the pair of short columns above the car floor; a handrail device attached to the upper frame; It has The length of each of the pair of short columns is shorter than the length of each of the pair of vertical columns used in the elevator car after installation. (Appendix 2) The working floor device for elevator installation according to Appendix 1, wherein the working floor device main body further has an emergency stop lifting device that activates the emergency stop device. (Appendix 3) A controller for controlling the emergency stop lifting device Furthermore, The working floor device for elevator installation described in Appendix 2, wherein the controller activates the emergency stop device by the emergency stop lifting device while the working floor device main body is stopped, and releases the activation state of the emergency stop device by the emergency stop lifting device while the working floor device main body is moving in the vertical direction. (Appendix 4) a tension detector provided on the suspended body and detecting a tension acting on the suspended body; Furthermore, The working floor device for elevator installation described in Appendix 3, wherein the controller activates the emergency stop device using the emergency stop lifting device when the tension detected by the tension detector becomes equal to or less than the tension setting value. (Appendix 5) A lifting frame installed at the top floor landing and equipped with the lifting device Furthermore, The lifting frame is An installation unit installed at the top floor landing; a protruding portion protruding from the installation portion into the elevator shaft; 5. The elevator installation work floor device according to any one of appendices 1 to 4, comprising: (Appendix 6) The elevator installation work floor device according to any one of Appendix 1 to Appendix 5, wherein the car floor, the emergency stop device, the upper frame, and the handrail device are permanent parts to be used in the car after installation. (Appendix 7) The elevator installation work floor device according to any one of Supplementary Note 1 to Supplementary Note 6, wherein the suspended body is connected to the pair of short columns. (Appendix 8) installing the pair of lowermost rail members in the hoistway; A process of assembling a working platform device body in the pit of the elevator shaft; a step of moving the working platform device body in the vertical direction using a lifting device provided at the top of the hoistway, and installing a plurality of rail members other than the pair of rail members at the lowest level in the hoistway; Including, the work floor device main body includes a car floor, an emergency stop device provided on the car floor, a pair of short pillars provided on both sides of the car floor, an upper frame attached to the pair of short pillars above the car floor, and a handrail device attached to the upper frame, a length of each of the pair of short pillars is shorter than a length of each of a pair of vertical pillars used in the car after installation; An elevator installation method in which the emergency stop device is activated while the working floor device main body is stopped, and the activated state of the emergency stop device is released while the working floor device main body is moving in the vertical direction. [Explanation of symbols]

[0072] 11 elevator shaft, 19a rail member, 24 emergency stop device, 31 car floor, 32 vertical pillar, 33 upper frame, 34 handrail device, 40 installation work floor device, 50 lifting frame, 51 installation section, 52 protrusion, 60 lifting device, 61 lifting device main body, 62 suspended body, 70 work floor device main body, 71 short pillar, 72 emergency stop lifting device, 81 controller, 82 tension detector.

Claims

1. A lifting device having a lifting device body provided on the upper part of a building and a hanging body connected to the lifting device body; A working floor device body suspended in the hoistway by the suspended body and lifted by the lifting device Equipped with The working platform device body is With a basket floor, an emergency stop device provided on the car floor; a pair of short pillars provided on both sides of the car floor; an upper frame attached to the pair of short columns above the car floor; a handrail device attached to the upper frame; It has The length of each of the pair of short columns is shorter than the length of each of the pair of vertical columns used in the elevator car after installation.

2. 2. A working floor apparatus for installing an elevator according to claim 1, wherein said working floor apparatus main body further comprises an emergency stop lifting device for actuating said emergency stop device.

3. A controller for controlling the emergency stop lifting device Furthermore, 3. A working floor device for elevator installation according to claim 2, wherein the controller activates the emergency stop device by the emergency stop lifting device while the working floor device main body is stopped, and releases the activation state of the emergency stop device by the emergency stop lifting device while the working floor device main body is moving in the vertical direction.

4. a tension detector provided on the suspended body and detecting a tension acting on the suspended body; Furthermore, 4. The elevator installation work floor apparatus according to claim 3, wherein the controller activates the safety device by the safety device lifting device when the tension detected by the tension detector falls below a tension setting value.

5. A lifting frame installed at the top floor landing and equipped with the lifting device Furthermore, The lifting frame is An installation unit installed at the top floor landing; a protruding portion protruding from the installation portion into the elevator shaft; 5. The elevator installation work platform device according to claim 1, further comprising:

6. 5. The elevator installation work floor device according to claim 1, wherein the car floor, the safety device, the upper frame, and the handrail device are permanent parts to be used in the car after installation.

7. The elevator installation work floor device according to any one of claims 1 to 4, wherein the suspended body is connected to the pair of short columns.

8. installing the pair of lowermost rail members in the hoistway; A process of assembling a working platform device body in the pit of the elevator shaft; a step of moving the working platform device body in the vertical direction using a lifting device provided at the top of the hoistway, and installing a plurality of rail members other than the pair of rail members at the lowest level in the hoistway; Including, the work floor device main body includes a car floor, an emergency stop device provided on the car floor, a pair of short pillars provided on both sides of the car floor, an upper frame attached to the pair of short pillars above the car floor, and a handrail device attached to the upper frame, a length of each of the pair of short pillars is shorter than a length of each of a pair of vertical pillars used in the car after installation; An elevator installation method in which the emergency stop device is activated while the working floor device main body is stopped, and the activated state of the emergency stop device is released while the working floor device main body is moving in the vertical direction.

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