Elevator shaft lifting device and elevator shaft lifting method

Abstract

To provide an elevator shaft lifting device that can reduce the number of parts. [Solution] The elevator shaft lifting device according to this embodiment comprises a cage frame, a cage floor, a cage floor handrail, a work platform, a work platform handrail, a ceiling sheave installed on the ceiling of the elevator shaft, a lifting rope wound around the ceiling sheave, the lifting rope extending from a first end to a second end, a lifting hoisting machine attached to the upper frame member for winding up the portion of the lifting rope on the first end side, a hook attached to the second end of the lifting rope, and a safety device for preventing the cage frame from descending. When raising or lowering the cage frame as the object to be lifted, the hook is attached to the work platform handrail and the lifting hoisting machine is driven.

Description

Technical Field

[0001] The embodiments relate to a hoisting device and a hoisting method for an elevator hoistway.

Background Art

[0002] In the installation of a conventional elevator, an operator boarded a work gondola or the car frame of the elevator and moved up and down in the hoistway by driving a construction winch. The work gondola (or car frame) was stopped at a desired hoisting position in the hoistway, and the operator performed the installation work. Hoistway equipment such as guide rails and winches were hoisted using a hoist installed at the upper part of the hoistway.

[0003]

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the embodiments is to provide a hoisting device and a hoisting method for an elevator hoistway that can reduce the number of components.

Means for Solving the Problems

[0006] The elevator shaft lifting device according to this embodiment is a device for lifting an object within an elevator shaft where a portion of a pair of guide rails is installed. The elevator shaft lifting device comprises a car frame that can move up and down along the guide rails, a car floor attached to the lower part of the car frame, a car floor handrail extending upward from the car floor, a work platform attached to the upper part of the car frame, a work platform handrail extending upward from the work platform, a ceiling sheave installed on the ceiling of the elevator shaft, a lifting rope wound around the ceiling sheave, a lifting rope extending from a first end to a second end, a lifting hoisting machine attached to the upper part of the car frame and winding up the portion of the lifting rope on the first end side, a hook attached to the second end of the lifting rope, and a safety device to prevent the car frame from descending. When raising or lowering the car frame as the object to be lifted, the hook is attached to the work platform handrail and the lifting hoisting machine is driven.

[0007] The elevator hoistway lifting method according to this embodiment is a method for lifting an object to be lifted within an elevator hoistway where a portion of the elevator's guide rails is installed. The elevator hoistway lifting method comprises: a hoistway lifting device preparation step of preparing the elevator hoistway lifting device described above; a car frame lifting step of attaching a hook to the work floor handrail and driving the lifting hoist to raise and lower the car frame, which is the object to be lifted; and a lifting step of attaching an object to be lifted other than the car frame to a hook and driving the lifting hoist to lift the object. In the lifting step, a safety device prevents the car frame from descending. [Effects of the Invention]

[0008] According to this embodiment, the number of parts can be reduced. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a front view of an elevator shaft lifting device according to an embodiment, showing the elevator shaft lifting device when raising and lowering the cage frame. [Figure 2] Figure 2 is a front view of the elevator shaft lifting device shown in Figure 1, specifically for lifting objects other than the elevator car frame. [Figure 3] Figure 3 is a front view of the elevator shaft lifting device shown in Figure 1, specifically for lifting long objects. [Figure 4] Figure 4 is a schematic front view showing a landing lifting device used when lifting an object from a landing. [Figure 5] Figure 5 is a flowchart showing the elevator shaft lifting method according to an embodiment. [Figure 6] Figure 6 is a flowchart showing the details of the preparation process for the elevator lifting device shown in Figure 5. [Figure 7] Figure 7 is a flowchart showing the details of the first lifting process shown in Figure 5. [Figure 8] Figure 8 is a flowchart showing the details of the second cage frame lifting process shown in Figure 5. [Figure 9] Figure 9 is a partial front view showing a typical lifting device. [Figure 10] Figure 10 is a partial side view showing a modified example of the elevator shaft lifting device shown in Figure 2. [Figure 11] Figure 11 is a front view showing a modified example of the elevator shaft lifting device shown in Figure 1. [Figure 12] Figure 12 is a schematic front view showing a modified example of the rope winding sheave of the elevator shaft lifting device shown in Figure 1. [Figure 13] Figure 13 is a front view showing a modified example of the elevator shaft lifting device shown in Figure 1. [Modes for carrying out the invention]

[0010] The elevator shaft lifting device and lifting method according to this embodiment will be described below with reference to the drawings. The elevator shaft lifting device 10 is a device for lifting an object W within the elevator shaft 1. The object W includes the car frame 11, car guide rails, counterweight guide rails, control panel, governor, hoisting machine, tower, elevator car header case, counterweight frame, main rope, etc., which will be described later.

[0011] As shown in FIG. 1, the hoisting device 10 for the elevator shaft may include a car frame 11, a car floor 12, a car floor handrail 13, a working floor 14, a working floor handrail 15, a ceiling sheave 16, a hoisting rope, a hoisting winch 18, a hook 19, a guide sheave 20 (see FIG. 2), an adapter 21 (see FIG. 2), a rope winding unit 22, a tarp 23, a safety device rope 24, a safety device 25, an operating device 26, a safety 27, a hoisting control panel 28, and a tail cord 29.

[0012] The car frame 11 is configured to be movable up and down along a pair of guide rails 2 installed in the elevator shaft 1. The car frame 11 may include guide rollers not shown. The car frame 11 may be used as a product after installation work as a member constituting an elevator car (not shown). The car frame 11 may include a lower frame member 11a, a pair of vertical frame members 11b extending upward from the lower frame member 11a, and an upper frame member 11c connecting the upper portions of the pair of vertical frame members 11b.

[0013] The car floor 12 is attached to the upper portion of the car frame 11 (the lower frame member 11a described above). The car floor 12 is supported from below by the lower frame member 11a. The car floor 12 is configured to provide a working space on the lower floor of the hoisting device 10 for the elevator shaft. The car floor 12 may be used as a product after installation work as a member constituting the car.

[0014] The car floor handrail 13 extends upward from the car floor 12. The car floor handrail 13 may be installed at the peripheral edge of the car floor 12. The car floor handrail 13 may define a working space for the operator.

[0015] The working floor 14 is attached to the upper portion of the car frame 11 (the upper frame member 11c described above). The working floor 14 is supported from below by the upper frame member 11c. The working floor 14 is configured to provide a working space on the upper floor of the hoisting device 10 for the elevator shaft.

[0016] The work platform handrail 15 extends upward from the work platform 14. The work platform handrail 15 may also be installed on the periphery of the work platform 14. The work platform handrail 15 may define the worker's workspace.

[0017] The ceiling sheave 16 is installed on the ceiling 1a of the hoistway 1. The lifting rope 17, which will be described later, is wound around the ceiling sheave 16. Two ceiling sheaves 16 are installed on the ceiling 1a of the hoistway 1. The ceiling sheave 16 may be positioned above the sheave of the corresponding lifting hoist 18 (described later).

[0018] The lifting rope 17 is wrapped around the ceiling sheave 16 described above. The lifting rope 17 includes a first end 17a and a second end 17b formed on the opposite side of the first end 17a, and extends from the first end 17a to the second end 17b. A separate lifting rope 17 is wrapped around each ceiling sheave 16.

[0019] The hoisting machine 18 is attached to the upper part of the cage frame 11 (the upper frame member 11c described above). As shown in Figure 1, the hoisting machine 18 may be positioned below the upper frame member 11c and supported by the upper frame member 11c. The hoisting machine 18 winds up the portion of the lifting rope 17 on the first end 17a side. Two hoisting machines 18 are attached to the upper frame member 11c. Each hoisting machine 18 may include a sheave (not shown) for winding up the corresponding lifting rope 17. By using two hoisting machines 18, the balance of the cage frame 11 can be improved. However, if the balance of the cage frame 11 can be ensured, one hoisting machine 18 may be provided in the center of the cage frame 11 to raise and lower the cage frame 11.

[0020] The hook 19 is attached to the second end 17b of the lifting rope 17. When raising or lowering the cage frame 11, which is the object to be lifted W, the hook 19 is attached to the handrail 15 of the work platform as described above. When lifting an object to be lifted W other than the cage frame 11, the hook 19 is attached to the object to be lifted W.

[0021] As shown in Figure 2, the guide sheave 20 is used to guide the lifting rope 17 when lifting an object W other than the cage frame 11 by hooking it onto the hook 19. The guide sheave 20 may be configured so that the hook 19 is positioned outside the cage frame 11 when viewed from above. The guide sheave 20 may also be positioned to prevent the object W to be lifted by hooking it onto the hook 19 from interfering with the cage frame 11.

[0022] In this embodiment, as shown in Figure 2, the object to be lifted W is positioned to the side of the cage frame 11 and lifted. In this case, the guide sheave 20 is also located outside the cage frame 11 and positioned to the side of the cage frame 11.

[0023] The adapter 21 is configured to attach the guide sheave 20 to the work platform handrail 15. As shown in Figure 2, the adapter 21 may be formed to extend upward from the work platform handrail 15 and laterally from the work platform handrail 15. The adapter 21 may be formed in any shape as long as the guide sheave 20 can be positioned outside the cage frame 11 when viewed from above.

[0024] As shown in Figure 1, the first end 17a of the lifting rope 17 is fixed to the rope winding unit 22. The rope winding unit 22 is configured to wind up the lifting rope 17 that has been wound up by the lifting hoist 18. The rope winding unit 22 may be configured to automatically wind up the lifting rope 17 using spring force or the like. The rope winding unit 22 may be configured to be able to unwind the wound lifting rope 17 when the winding force from the lifting hoist 18 overcomes the spring force.

[0025] The rope winding unit 22 may be attached to the cage frame 11. The rope winding unit 22 may be located on the upper part of the cage frame 11 (the upper frame member 11c described above). Two rope winding units 22 are attached to the upper frame member 11c. Each rope winding unit 22 is located below the corresponding lifting hoist 18 and winds up the lifting rope 17 that has been hoisted up by the corresponding lifting hoist 18.

[0026] The ladder 23 extends from the cage platform 12 to the work platform 14. The ladder 23 is configured to allow workers to move between the cage platform 12 and the work platform 14. The ladder 23 is also called a ladder.

[0027] The safety rope 24 is suspended from the ceiling 1a of the elevator shaft 1. A ceiling hook 3 (see Figure 9) is installed on the ceiling 1a of the elevator shaft 1, and the safety rope 24 is suspended from the ceiling hook 3. In this embodiment, one safety rope 24 is suspended from the ceiling 1a.

[0028] The safety device 25 is configured to prevent the cage frame 11 from descending and to stop the cage frame 11. The safety device 25 is configured to fix the cage frame 11 to the safety device rope 24 when operated by a worker. For example, the safety device 25 may include a gripping part for gripping the safety device rope 24, although this is not shown in the figure. The safety device 25 may be configured to release an internal locking mechanism when the descent speed of the cage frame 11 exceeds a predetermined speed, and the gripping part will grip the safety device rope 24, using a mechanism similar to that of a governor. In addition, the safety device 25 may be configured so that the internal locking mechanism is released and the gripping part grips the safety device rope 24 when an operator operates an activation button or the like. For example, after operating an activation button or the like, the safety device 25 may be configured so that when the hoisting machine 18 is driven to lower the cage frame 11 at a low speed, the gripping part will grip the safety device rope 24. The safety device 25 may include operating means such as an operating lever for returning the unlocked internal locking mechanism to the locked state.

[0029] The actuator 26 is configured to activate the safety device 25 through operation by a worker. The actuator 26 may also activate the safety device 25 via wireless or wired communication.

[0030] In this embodiment, the safety device 25 is attached to the cage floor 12, and the actuator 26 is attached to the work platform 14. However, the safety device 25 may be attached to the work platform 14, and the actuator 26 may be attached to the cage floor 12. The safety device 25 may be attached to one of the cage floor 12 and the work platform 14, and the actuator 26 may be attached to the other.

[0031] The safety 27 is attached to the car frame 11. The safety 27 is configured to grip the guide rail 2 by a wedge effect and stop the car frame 11 when the safety device 25 described above is activated. The safety 27 may be configured similarly to a safety that uses a governor to make an emergency stop on the descent of an over-speeding elevator car. The safety 27 may be attached to the lower part of the vertical frame member 11b, or it may be positioned below the lower frame member 11a. A pair of safety 27s are attached to the car frame 11, and when the safety device 25 is activated, the safety 27 is raised so that it can grip the corresponding guide rail 2 in an emergency stop. The safety 27 may be mechanically linked to the safety device 25.

[0032] The lifting control panel 28 may be installed on the work platform 14. The lifting control panel 28 may be configured to control the lifting hoisting machine 18 described above. The lifting control panel 28 may synchronously control two lifting hoisting machines 18.

[0033] The tail cord 29 is configured to supply power to the lifting control panel 28. The tail cord 29 may also be connected to an external power source (not shown) and the lifting control panel 28. The tail cord 29 may have a length that can follow the raising and lowering of the cage frame 11.

[0034] As shown in Figure 3, the elevator shaft lifting device 10 may include a support section 30. The support section 30 may be configured to accommodate and support the object to be lifted W. For example, if the object to be lifted W is a long object, the object to be lifted W may be lifted by raising the car frame 11 while the object to be lifted W is supported by the support section 30. Examples of long objects include the car guide rail and the counterweight guide rail. The support section 30 may be attached to the outer surface of one of the vertical frame members 11b.

[0035] Next, the landing lifting device 40 according to this embodiment will be described with reference to Figure 4. The landing lifting device 40 is installed at the landing 4 of a desired floor level and is a device for lifting an object W within the elevator shaft 1. The landing lifting device 40 is used to lift the components of the elevator shaft lifting device 10 described above. The landing lifting device 40 may be mainly used to lift the car frame 11 and the car floor 12. Figure 4 shows an example of the car floor 12 being lifted.

[0036] As shown in Figure 4, the landing lifting device 40 may include a lifting steel frame 41, a steel frame sheave 42, a lifting rope 17, a lifting hoist 18, a hook 19, a rope winding unit 22, and a lifting control panel 28.

[0037] The lifting steel frame 41 is installed so as to extend from the landing 4 of the desired floor level into the elevator shaft 1. The lifting steel frame 41 may be inclined with respect to the horizontal plane. The lifting steel frame 41 may be inclined so that the tip of the lifting steel frame 41 located in the elevator shaft 1 is positioned higher than the base of the lifting steel frame 41 located in the landing 4.

[0038] The steel sheave 42 is installed on the lifting steel frame 41. The lifting rope 17 is wrapped around the steel sheave 42. The steel sheave 42 may also be suspended from the lifting steel frame 41.

[0039] The lifting rope 17 is wrapped around the steel sheave 42 described above. The lifting rope 17 of the elevator shaft lifting device 10 described above may also be used.

[0040] The hoisting machine 18 is installed at landing 4. The hoisting machine 18 winds up the first end 17a portion of the lifting rope 17. The hoisting machine 18 of the elevator shaft lifting device 10 may also be used.

[0041] The hook 19 is attached to the second end 17b of the lifting rope 17, similar to the hoistway lifting device 10. The hook 19 of the hoistway lifting device 10 may also be used.

[0042] The rope winding unit 22 is installed on the landing 4. The rope winding unit 22 is configured to wind up the lifting rope 17 that has been hoisted up by the lifting hoisting machine 18. The rope winding unit 22 of the elevator shaft lifting device 10 may also be used.

[0043] The lifting control panel 28 may be installed on the landing 4. The lifting control panel 28 may be configured to control the lifting hoisting machine 18 described above. The lifting control panel 28 of the hoistway lifting device 10 may be used as the lifting control panel 28.

[0044] Next, the elevator shaft lifting method according to this embodiment will be explained with reference to Figures 5 to 8. The elevator shaft lifting method is a method for lifting an object W within the elevator shaft 1, and is a method performed when installing elevator shaft equipment. The elevator shaft lifting method according to this embodiment may include, as shown in Figure 5, an elevator shaft lifting device preparation step S1, a first cage frame lifting step S2, a first lifting step S3, a second cage frame lifting step S4, a second lifting step S5, and an elevator shaft lifting device dismantling step S6.

[0045] The elevator shaft lifting device preparation step S1 is the process of preparing the elevator shaft lifting device 10 described above. More specifically, as shown in Figure 6, the elevator shaft lifting device preparation step S1 may include the landing lifting device preparation step S11, the cage frame installation step S12, and the assembly and disassembly step S13.

[0046] As shown in Figure 6, first, the landing lifting device preparation process S11 is carried out. The landing lifting device preparation process S11 is the process of preparing the landing lifting device 40 shown in Figure 4. More specifically, the lifting steel frame 41 is installed so as to extend from the landing 4 of the desired floor into the elevator shaft 1, a steel sheave 42 is installed on the lifting steel frame 41, and the lifting rope 17 is wrapped around the steel sheave 42. A hook 19 is attached to the second end 17b of the lifting rope 17. A lifting hoist 18, a rope winding unit 22, and a lifting control panel 28 are installed at the landing 4.

[0047] Next, as shown in Figure 5, the car frame installation process S12 is performed. In the car frame installation process S12, the car frame 11 and car floor 12 are lifted using the landing lifting device 40 and installed. The car frame 11 and car floor 12 may be brought into the landing 4 on the lower floor and lifted into the elevator shaft 1 by attaching a hook 19 to the second end 17b of the lifting rope 17. At this time, a part of the guide rail 2 for the elevator car may be installed in advance in the elevator shaft 1, and the car frame 11 may be installed on this guide rail 2. In the car frame installation process S12, the ladder 23, car floor handrail 13, and work platform handrail 15 may be lifted using the landing lifting device 40 and attached to the car frame 11.

[0048] Next, the assembly and disassembly process S13 is performed. In the assembly and disassembly process S13, the elevator shaft lifting device 10 is assembled by attaching the other components of the elevator shaft lifting device 10 to the car frame 11, and the landing lifting device 40 is disassembled. For example, the components of the landing lifting device 40, such as the lifting hoist 18, rope winding unit 22, lifting rope 17, hook 19, and lifting control panel 28, may be disassembled from the landing lifting device 40 and used in the elevator shaft lifting device 10. The lifting rope 17, which is unwound from the rope winding unit 22 and the lifting hoist 18, is wound onto the ceiling hook 3 installed on the ceiling 1a of the elevator shaft 1. In this way, the other components of the elevator shaft lifting device 10 may be lifted using the lifting hoist 18 to assemble the elevator shaft lifting device 10.

[0049] As shown in Figure 5, after the preparation process S1 for the elevator shaft lifting device, the first cage frame lifting process S2 is performed. In the first cage frame lifting process S2, the hook 19 attached to the second end 17b of the lifting rope 17 is hooked onto the work platform handrail 15 to drive the lifting hoist 18. This raises and lowers the cage frame 11, which is the object to be lifted W, and moves it to the desired lifting position. When raising the cage frame 11, the lifting hoist 18 winds up the lifting rope 17. The wound-up lifting rope 17 is then wound up by the rope winding unit 22. When lowering the cage frame 11, the lifting hoist 18 unwinds the lifting rope 17, and the lifting rope 17 is unwinded from the rope winding unit 22.

[0050] Next, the first lifting process S3 is performed. In the first lifting process S3, the object to be lifted W, other than the cage frame 11, is attached to the hook 19 of the lifting rope 17 and the lifting hoisting machine 18 is driven. In this way, the object to be lifted W is lifted and installed in the predetermined position.

[0051] More specifically, as shown in Figure 7, first, the safety device 25 is activated (step S31). In this case, the internal locking mechanism is released by operating the activation button of the safety device 25, and the lifting hoist 18 is driven to lower the cage frame 11. As a result, the gripping part of the safety device 25 grips the safety device rope 24, and the safety 27 grips the guide rail 2. This prevents the cage frame 11 from descending and stops the cage frame 11. Next, the lifting hoist 18 is driven in the direction of lowering the cage frame 11 (step S32). As a result, the lifting rope 17 is paid out from the lifting hoist 18, and the tension of the lifting rope 17 is released. Next, the hook 19 is removed from the work platform handrail 15 (step S33). Next, the lifting rope 17 is wrapped around the guide sheave 20 and the hook 19 is suspended (step S34). At this point, the guide sheave 20 is attached to the work platform handrail 15 via the adapter 21. Next, the hook 19 is lowered and hooked onto the object to be lifted W, which has been brought to the landing 4 on the lower floor, and the object is lifted (step S35). Once the object to be lifted W is lifted to the desired lifting position, the object to be lifted W is attached to the predetermined position (step S36). After that, the hook 19 is removed from the object to be lifted W (step S37).

[0052] In the first lifting process S3, with the cage frame 11 fixed at the desired lifting position, the objects to be lifted W are sequentially lifted and installed in the predetermined positions according to the procedure described above. Once the installation of the objects to be lifted W at this lifting position is completed, the process moves to the second cage frame lifting process S4, as shown in Figure 5. If there is only one object to be lifted W, the process moves to the second cage frame lifting process S4 after step S37 described above.

[0053] In the second cage frame lifting process S4, the hook 19 of the lifting rope 17 is attached to the work platform handrail 15 and the lifting hoist 18 is driven. This raises and lowers the cage frame 11, which is the object to be lifted W, and moves it to the desired lifting position.

[0054] More specifically, as shown in Figure 8, first, the hook 19 of the lifting rope 17 is attached to the work platform handrail 15 (step S41). Next, the lifting hoist 18 is driven in the direction that raises the cage frame 11 (step S42). As a result, the lifting rope 17 is wound onto the lifting hoist 18, and tension is applied to the lifting rope 17. Next, the safety device 25 is released by operating the operating lever, etc., and the safety 27 is released (step S43). Since the cage frame 11 was raised in step S42, the tension on the safety device rope 24 is removed. After that, the lifting hoist 18 is driven to raise and lower the cage frame 11 as the object to be lifted W (step S44). As a result, the cage frame 11 is moved to the desired raised or lowered position.

[0055] Next, the second lifting process S5 is performed. In the second lifting process S5, the objects to be lifted W other than the cage frame 11 are attached to the hooks 19 of the lifting rope 17 and the lifting hoisting machine 18 is driven. In this way, the objects to be lifted W are lifted and installed in the predetermined position. The second lifting process S5 is performed in the same manner as the first lifting process S3 described above.

[0056] By repeating the cage frame lifting process and the lifting process in this manner, the object W to be lifted can be lifted into the elevator shaft 1 and installed in the predetermined position.

[0057] After all the lifting targets W have been lifted and placed in the elevator shaft 1, the process moves to the elevator shaft lifting device dismantling process S6 shown in Figure 5, and the elevator shaft lifting device 10 is dismantled. At this time, the car frame 11 and car floor 12 are left in place and used as components of the elevator car as a finished product.

[0058] Here, we will explain a typical lifting method in the elevator shaft 1 using Figure 9. Figure 9 is a front view showing a typical lifting device 50.

[0059] In the lifting device 50 shown in Figure 9, a cage frame 11 is fitted with a cage floor 12 (see Figure 1) and a work platform 14. A cage floor handrail 13 is fitted to the cage floor 12, and a work platform handrail 15 is fitted to the work platform 14. Multiple ceiling hooks 3 are fitted to the ceiling 1a of the elevator shaft 1, and two lifting ropes 17 are suspended from the ceiling hooks 3. Two construction hoisting machines 51 that wind up the corresponding lifting ropes 17 are attached to the work platform 14. When the construction hoisting machines 51 wind up the lifting ropes 17, the cage frame 11 rises, and when the lifting ropes 17 are released, the cage frame 11 lowers. The construction hoisting machines 51 may be configured in the same way as the lifting hoisting machine 18 described above.

[0060] A safety rope 24 is suspended from another ceiling hook 3 on the ceiling 1a of the elevator shaft 1. A safety device 52 is attached to the work platform 14. The safety device 52 may be configured to activate when the descent speed of the elevator car frame 11 exceeds a predetermined speed, causing the gripping part to grip the safety rope 24. This secures the elevator car frame 11 to the safety rope 24. The safety device 52 may be configured in the same way as the safety device 25 described above.

[0061] A lifting machine 53 is installed on the ceiling 1a of the elevator shaft 1. A lifting rope 17 is suspended from the lifting machine 53. A hook 19 is attached to the end of the lifting rope 17. By hanging the object to be lifted W on the hook 19 and driving the lifting machine 53, the object to be lifted W is lifted.

[0062] In a typical lifting device 50, a construction hoisting machine 51 is used to raise and lower the cage frame 11, and a lifting machine 53 is used to lift the object W to be lifted. Therefore, the construction hoisting machine 51 and the lifting machine 53 are provided separately, resulting in a large number of parts in the lifting device 50.

[0063] In contrast, according to this embodiment, a hook 19 is attached to the second end 17b of a lifting rope 17 that is wound around a ceiling sheave 16 installed on the ceiling 1a of the elevator shaft 1, and the portion of the lifting rope 17 on the first end 17a side is wound up by a lifting hoist 18. By hooking the hook 19 onto the work platform handrail 15 and driving the lifting hoist 18, the cage frame 11, which is the object to be lifted W, can be raised and lowered. On the other hand, by hooking the hook 19 onto an object to be lifted W other than the cage frame 11 and driving the lifting hoist 18, the object to be lifted W can be lifted. Therefore, the hoist for raising and lowering the cage frame 11 and the lifting machine for lifting objects W other than the cage frame 11 can be unified into the lifting hoist 18. As a result, the number of parts in the elevator shaft lifting device 10 can be reduced.

[0064] Furthermore, according to this embodiment, when lifting an object W other than the cage frame 11, the safety device 25 can be activated to prevent the cage frame 11 from descending. This makes it possible to lift objects W other than the cage frame 11.

[0065] Furthermore, according to this embodiment, the guide sheave 20 guides the lifting rope 17 so that when lifting an object W other than the cage frame 11 by hooking it onto the hook 19, the hook 19 is positioned outside the cage frame 11 when viewed from above. This prevents the object W from interfering with the cage frame 11 when it is lifted by hooking it onto the hook 19. Therefore, the object W can be lifted.

[0066] Furthermore, according to this embodiment, the guide sheave 20 is attached to the work platform handrail 15 by the adapter 21. This makes it easy to guide the lifting rope 17 to the guide sheave 20 so that the hook 19 is positioned outside the cage frame 11 when viewed from above. This further prevents the lifting object W from interfering with the cage frame 11 when the lifting object W is attached to the hook 19 and lifted.

[0067] Furthermore, according to this embodiment, the rope winding unit 22 can wind up the lifting rope 17 that has been hoisted up by the lifting hoisting machine 18. This prevents problems such as the lifting rope 17 becoming entangled with other equipment.

[0068] Furthermore, according to this embodiment, the rope winding unit 22 is attached to the cage frame 11. This allows the lifting rope 17 wound up by the lifting hoist 18 to be wound up by the rope winding unit 22 attached to the cage frame 11. Therefore, it is possible to prevent the lifting rope 17 from hanging down from the cage frame 11 into the hoistway 1.

[0069] Furthermore, according to this embodiment, the safety device 25 is configured to fix the cage frame 11 to a safety device rope 24 suspended from the ceiling 1a of the elevator shaft 1. This prevents the cage frame 11 from descending and stops it even when lifting objects W other than the cage frame 11 with the hoisting machine 18. For this reason, objects W other than the cage frame 11 can be lifted.

[0070] Furthermore, according to this embodiment, a safety device 25 is attached to one of the cage floor 12 and the work platform 14, and an actuator 26 is attached to the other. The actuator 26 activates the safety device 25 through operation by a worker. As a result, a worker can activate the safety device 25 from either the cage floor 12 or the work platform 14. Therefore, it is not necessary to move between the cage floor 12 and the work platform 14 in order to activate the safety device 25, thereby improving work efficiency.

[0071] Furthermore, according to this embodiment, a safety 27 capable of gripping the guide rail 2 is attached to the car frame 11. This further prevents the car frame 11 from descending.

[0072] Furthermore, according to this embodiment, the lifting machine 18 of the elevator shaft lifting device 10 is used as the lifting machine for the landing lifting device 40, which is used to lift the components of the elevator shaft lifting device 10. This makes it possible to unify the lifting machine of the landing lifting device 40 and the lifting machine of the elevator shaft lifting device 10 into the lifting machine 18.

[0073] In the above-described embodiment, an example was explained in which the object to be lifted W is positioned to the side of the cage frame 11 and lifted. However, this embodiment is not limited to this. For example, as shown in Figure 10, the object to be lifted W may be positioned behind the cage floor 12 and lifted. In this case, the guide sheave 20 is located outside the cage frame 11 and behind the cage frame 11. The adapter 21 may be formed to extend upward from the work floor handrail 15 and also extend rearward from the work floor handrail 15.

[0074] Furthermore, in the above-described embodiment, an example was described in which one safety device rope 24 is suspended from the ceiling 1a. However, this embodiment is not limited to this. For example, as shown in Figure 11, two safety device ropes 24 may be suspended from the ceiling 1a. In this case, two safety devices 25 may be attached to the cage floor 12, and each safety device 25 may be configured to grip the corresponding safety device rope 24. This shortens the distance the worker has to move to activate the safety device 25, thereby improving work efficiency. Two actuators 26 for activating the corresponding safety devices 25 may be attached to the work platform 14. In the example shown in Figure 11, the safety device 25 does not need to activate the safety device 27.

[0075] Furthermore, in the above-described embodiment, an example was given in which the rope winding unit 22 is attached to the car frame 11. However, this embodiment is not limited to this. For example, as shown in Figure 12, the rope winding unit 22 may be attached to the bottom of the hoistway 1. In this case, the lifting rope 17, which has been wound up by the lifting hoist 18, is suspended downward from the car frame 11 and wound onto the rope winding unit 22. By installing the rope winding unit 22 at the bottom of the hoistway 1, it is possible to prevent the load of the wound-up lifting rope 17 from being added to the car frame 11. This is particularly advantageous when the elevator car has a long lifting and lowering journey.

[0076] Furthermore, in the above-described embodiment, an example was given in which the tail code 29 supplies power to the lifting control panel 28. However, this embodiment is not limited to this. For example, as shown in Figure 13, the elevator shaft lifting device 10 may include a battery panel 43 that supplies power to the lifting hoist 18. The battery panel 43 may be installed on the work platform 14. The battery panel 43 supplies power to the lifting hoist 18 via the lifting control panel 28. The lifting control panel 28 controls the power supplied to the lifting hoist 18. This makes the tail code 29 unnecessary. By installing the battery panel 43 on the work platform 14, it can be placed close to the lifting control panel 28, and the power wiring can be shortened.

[0077] According to the embodiments described above, the number of parts can be reduced.

[0078] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be implemented in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of symbols]

[0079] 1: Hoistway, 1a: Ceiling, 1b: Bottom, 2: Guide rail, 4: Landing, 10: Hoistway lifting device, 11: Cage frame, 11a: Lower frame member, 11b: Vertical frame member, 11c: Upper frame member, 12: Cage floor, 13: Cage floor handrail, 14: Work platform, 15: Work platform handrail, 16: Ceiling sheave, 17: Lifting rope, 17a: First end, 17b: Second end, 18: Lifting hoist, 19: Hook, 20: Guide sheave, 21: Adapter, 22: Rope winding section, 24: Rope for safety device, 25: Safety device, 26: Actuator, 27: Safety, 40: Landing lifting device, W: Object to be lifted

Claims

1. A lifting device for lifting an object within a lifting shaft where a portion of a pair of guide rails for an elevator is installed, A cage frame that can move up and down along the aforementioned guide rail, The cage floor attached to the lower part of the cage frame, A handrail for the cage floor extends upward from the aforementioned cage floor, A work platform attached to the upper part of the cage frame, A work platform handrail extending upward from the aforementioned work platform, The ceiling sheave installed in the ceiling of the aforementioned elevator shaft, A lifting rope wrapped around the ceiling sheave, comprising a lifting rope extending from a first end to a second end, A lifting hoisting machine is attached to the upper part of the cage frame and winds up the first end portion of the lifting rope, A hook attached to the second end of the lifting rope, A safety device to prevent the cage frame from descending, Equipped with, When raising or lowering the cage frame, which is the object to be lifted, the hook is attached to the handrail of the work platform and the lifting hoisting machine is driven. Elevator hoistway lifting device.

2. The lifting device is further provided with a guide sheave that guides the lifting rope so that, when viewed from above, the hook is positioned outside the cage frame when the object to be lifted other than the cage frame is attached to the hook. The elevator shaft lifting device according to claim 1.

3. The system further includes an adapter for attaching the guide sheave to the handrail of the work platform, The elevator shaft lifting device according to claim 2.

4. The first end of the lifting rope is fixed, and the system further includes a rope winding section for winding up the lifting rope that has been wound up by the lifting hoisting machine. The elevator shaft lifting device according to claim 1 or 2.

5. The rope winding section is attached to the cage frame. The elevator shaft lifting device according to claim 4.

6. The rope winding unit is attached to the bottom of the elevator shaft. The elevator shaft lifting device according to claim 4.

7. The elevator shaft is further equipped with a safety rope suspended from the ceiling, The safety device is configured to secure the cage frame to the safety device rope. The elevator shaft lifting device according to claim 1 or 2.

8. The device further comprises an actuator for activating the aforementioned safety device, The safety device is attached to one of the cage floor and the work floor, and the operating device is attached to the other. The elevator shaft lifting device according to claim 1 or 2.

9. The cage frame is further equipped with a pair of safety features capable of gripping the corresponding guide rails, The elevator shaft lifting device according to claim 1 or 2.

10. The cage frame is further equipped with a battery panel that supplies power to the lifting and hoisting machine, The elevator shaft lifting device according to claim 1 or 2.

11. An elevator shaft lifting method for lifting an object within a hoistway where a portion of the elevator guide rail is installed, A preparation step for an elevator shaft lifting device according to claim 1 or 2, The cage frame lifting process involves attaching the hook to the handrail of the work platform and driving the lifting hoisting machine to raise and lower the cage frame, which is the object to be lifted. The lifting process includes hanging the object to be lifted, other than the cage frame, on the hook and driving the lifting hoist to lift the object, In the lifting process, the safety device prevents the cage frame from descending. A method for lifting objects into an elevator shaft.

12. The preparation process for the elevator lifting device is as follows: The process of preparing the landing lifting device, including the aforementioned lifting and hoisting machine, at the landing, A step of using the landing lifting device to lift the cage frame and the cage floor and install the cage frame and the cage floor, The process involves attaching the other components of the elevator shaft lifting device to the car frame to assemble the elevator shaft lifting device, and dismantling the landing lifting device. including, The method for lifting an elevator shaft according to claim 11.

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