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] An elevator shaft lifting device according to an embodiment includes a car frame, a car floor, a car floor handrail, a working floor, a working floor handrail, a ceiling sheave installed on the ceiling of the elevator shaft, a lifting rope wound around the ceiling sheave and extending from a first end to a second end, a lifting hoist attached to an upper frame member 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 that prevents the car frame from descending. When raising or lowering the car frame as an object to be lifted, the hook is hooked on the working floor handrail and the lifting hoist is driven.

Description

[Technical Field]

[0001] The embodiments relate to an elevator shaft lifting device and a method for lifting a shaft. [Background technology]

[0002] In conventional elevator installation, workers would board a work gondola or elevator car frame and move up and down within the hoistway by driving a construction hoist. The work gondola (or car frame) would be stopped at the desired elevation position within the hoistway, and the workers would then perform the installation work. Lifting equipment such as guide rails and hoists was lifted using a lifting machine installed at the top of the hoistway.

[0003] Thus, during elevator installation, the work gondola or car frame was raised and lowered by the construction hoist, while the hoistway equipment was lifted by a separate lifting machine, which resulted in a large number of parts for the lifting device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 63-134487 [Patent Document 2] Japanese Patent Application Publication No. 10-36032 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-60158 Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments aim to provide an elevator shaft lifting device and a hoistway lifting method that can reduce the number of parts. [Means for solving the problem]

[0006] An elevator hoistway lifting device according to an embodiment is a device for lifting an object to be lifted in a hoistway in which a pair of elevator guide rails are installed. The hoistway lifting device includes a car frame that can be raised and lowered along the guide rails, a car floor attached to the bottom of the car frame, a car floor handrail extending upward from the car floor, a working floor attached to the top of the car frame, a working floor handrail extending upward from the working floor, a ceiling sheave installed on the ceiling of the hoistway, a lifting rope wound around the ceiling sheave and extending from a first end to a second end, a lifting hoist attached to the top of the car frame and winding up the portion of the lifting rope near the first end, a hook attached to the second end of the lifting rope, and a safety device that prevents the car frame from descending. When raising or lowering the car frame as the object to be lifted, the hook is hooked on the working floor handrail and the lifting hoist is driven.

[0007] The elevator hoistway lifting method according to the embodiment is a method for lifting an object to be lifted in a hoistway in which a portion of the elevator guide rail is installed. The elevator hoistway lifting method includes an hoistway lifting device preparation step for preparing the above-mentioned elevator hoistway lifting device, a car frame lifting step for hanging a hook on a working floor handrail and driving a lifting hoist to lift or lower a car frame as an object to be lifted, and a lifting step for hanging an object to be lifted other than the car frame on the hook and driving the lifting hoist to lift the object to be lifted. During the lifting step, a safety device prevents the car frame from descending. [Effects of the Invention]

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

[0009] [Figure 1] FIG. 1 is a front view of a hoistway lifting device according to an embodiment, showing the hoistway lifting device when raising and lowering a car frame. [Figure 2] FIG. 2 is a front view of the hoistway lifting device shown in FIG. 1 when lifting an object to be lifted other than a car frame. [Figure 3] FIG. 3 is a front view of the hoistway lifting device shown in FIG. 1 when lifting a long object as an object to be lifted. [Figure 4] FIG. 4 is a schematic front view showing the platform lifting device when lifting an object to be lifted from the platform. [Figure 5] FIG. 5 is a flowchart showing a hoistway lifting method according to an embodiment. [Figure 6] FIG. 6 is a flowchart showing the details of the hoistway lifting device preparation step shown in FIG. [Figure 7] FIG. 7 is a flowchart showing the details of the first lifting step shown in FIG. [Figure 8] FIG. 8 is a flowchart showing the details of the second car frame lifting and lowering process shown in FIG. [Figure 9] FIG. 9 is a partial front view showing a general lifting device. [Figure 10] FIG. 10 is a partial side view showing a modification of the hoistway lifting device shown in FIG. [Figure 11] FIG. 11 is a front view showing a modification of the hoistway lifting device shown in FIG. [Figure 12] FIG. 12 is a schematic front view showing a modified example of the rope winding sheave of the hoistway lifting device shown in FIG. [Figure 13] FIG. 13 is a front view showing a modification of the hoistway lifting device shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] An elevator shaft lifting device and an elevator shaft 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 to be lifted in a shaft 1. The object W to be lifted includes a car frame 11, car guide rails, counterweight guide rails, a control panel, a governor, a hoist, a tower, a car header case, a counterweight frame, a main rope, etc., which will be described later.

[0011] As shown in Figure 1, the elevator shaft lifting device 10 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 lifting rope 17, a lifting hoist 18, a hook 19, a guide sheave 20 (see Figure 2), an adapter 21 (see Figure 2), a rope take-up section 22, a ladder 23, a safety device rope 24, a safety device 25, an operating device 26, a safety 27, a lifting control panel 28, and a tail cord 29.

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

[0013] The car floor 12 is attached to the upper part 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 for the floor below the hoistway lifting device 10. The car floor 12 may be used as a product after installation as a component constituting a passenger car.

[0014] The car floor handrails 13 extend upward from the car floor 12. The car floor handrails 13 may be installed on the periphery of the car floor 12. The car floor handrails 13 may define a work space for an operator.

[0015] The work floor 14 is attached to the upper part of the car frame 11 (the upper frame member 11c described above). The work floor 14 is supported from below by the upper frame member 11c. The work floor 14 is configured to provide a work space on the upper floor of the hoistway lifting device 10.

[0016] The work floor handrail 15 extends upward from the work floor 14. The work floor handrail 15 may be installed on the periphery of the work floor 14. The work floor handrail 15 may define a work space for a worker.

[0017] The ceiling sheave 16 is installed on the ceiling 1a of the hoistway 1. A 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 sheaves 16 may be arranged above the sheaves of the corresponding lifting hoists 18 (described later).

[0018] The lifting ropes 17 are wound around the above-mentioned ceiling sheaves 16. The lifting ropes 17 include a first end 17a and a second end 17b formed on the opposite side of the first end 17a, and extend from the first end 17a to the second end 17b. A separate lifting rope 17 is wound around each ceiling sheave 16.

[0019] The lifting hoist 18 is attached to the upper part of the car frame 11 (the upper frame member 11c described above). As shown in FIG. 1, the lifting hoist 18 may be disposed below the upper frame member 11c and supported by the upper frame member 11c. The lifting hoist 18 winds up the portion of the lifting rope 17 on the first end 17a side. Two lifting hoists 18 are attached to the upper frame member 11c. Each lifting hoist 18 may include a sheave (not shown) that winds up the corresponding lifting rope 17. Using two lifting hoists 18 can improve the balance of the car frame 11. However, as long as the balance of the car frame 11 can be ensured, one lifting hoist 18 may be provided in the center of the car frame 11 to raise and lower the car frame 11.

[0020] The hook 19 is attached to the second end 17b of the lifting rope 17. When raising or lowering the car frame 11 as the object to be lifted W, the hook 19 is hooked on the above-mentioned working floor handrail 15. When lifting an object to be lifted W other than the car frame 11, the hook 19 is hooked on the object to be lifted W.

[0021] As shown in Fig. 2, the guide sheave 20 is used to guide the lifting rope 17 when an object W to be lifted other than the car frame 11 is hung on the hook 19 and lifted. The guide sheave 20 may be configured so that the hook 19 is disposed outside the car frame 11 when viewed from above. The guide sheave 20 may be disposed in a position that can prevent the object W to be lifted hung on the hook 19 from interfering with the car frame 11.

[0022] In this embodiment, as shown in Fig. 2, the object W to be lifted is placed on the side of the car frame 11 and is lifted. In this case, the guide sheave 20 is also placed outside the car frame 11, on the side of the car frame 11.

[0023] The adapter 21 is configured to attach the guide sheave 20 to the working floor handrail 15. As shown in Fig. 2, the adapter 21 may be formed so as to extend upward from the working floor handrail 15 and also extend laterally from the working floor handrail 15. The adapter 21 may be formed in any shape as long as it allows the guide sheave 20 to be disposed outside the car frame 11 when viewed from above.

[0024] As shown in Fig. 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 wound up by the lifting hoist 18. The rope winding unit 22 may be configured to automatically wind up the lifting rope 17 using a spring force or the like. The rope winding unit 22 may be configured to be able to pay out the wound lifting rope 17 when the winding force of the lifting hoist 18 overcomes the spring force.

[0025] The rope winding unit 22 may be attached to the car frame 11. The rope winding unit 22 may be arranged on the upper part of the car 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 arranged below the corresponding lifting hoist 18, and winds up the lifting rope 17 wound up by the corresponding lifting hoist 18.

[0026] The ladder 23 extends from the car floor 12 to the working floor 14. The ladder 23 is configured to allow workers to move between the car floor 12 and the working floor 14. The ladder 23 is also called a ladder.

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

[0028] The safety device 25 is configured to prevent the car frame 11 from descending and stop the car frame 11. The safety device 25 is configured to secure the car frame 11 to the safety device rope 24 by operation by an operator. For example, the safety device 25 may include a gripping portion (not shown) that grips the safety device rope 24. The safety device 25 may be configured to release an internal locking mechanism and cause the gripping portion to grip the safety device rope 24 when the descent speed of the car frame 11 exceeds a predetermined speed by a mechanism similar to a governor. In addition, the safety device 25 may be configured to release the internal locking mechanism and cause the gripping portion to grip the safety device rope 24 when an operator operates an operation button or the like. For example, the safety device 25 may be configured such that, after operating an operation button or the like, the lifting hoist 18 is driven to lower the car frame 11 at a low speed, and the gripping portion grips the safety device rope 24. The safety device 25 may include an operating means such as an operating lever for returning the released internal locking mechanism to the locked state.

[0029] The actuator 26 is configured to be operated by an operator to activate the safety device 25. The actuator 26 may activate the safety device 25 via wireless communication or wired communication.

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

[0031] The safety 27 is attached to the car frame 11. When the above-mentioned safety device 25 is activated, the safety 27 grips the guide rail 2 by a wedge effect and stops the car frame 11. The safety 27 may be configured similarly to a safety that uses a governor to emergency stop the descent of a car that is traveling at an excessive speed. The safety 27 may be attached to the lower part of the vertical frame member 11b, or may be positioned lower than the lower frame member 11a. A pair of safeties 27 are attached to the car frame 11, and when the safety device 25 is activated, the safeties 27 are pulled up so that they can grip the corresponding guide rail 2 in an emergency stop. The safeties 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 above-mentioned lifting machines 18. The lifting control panel 28 may synchronously control two lifting machines 18.

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

[0034] As shown in FIG. 3, the hoistway lifting device 10 may include a receiving portion 30. The receiving portion 30 may be configured to accommodate and support an object W to be lifted. For example, if the object W to be lifted is a long object, the object W may be lifted by having the object W supported by the receiving portion 30 and raising the car frame 11. Examples of long objects include a car guide rail and a weight guide rail. The receiving portion 30 may be attached to the outer surface of one of the vertical frame members 11b.

[0035] Next, the platform lifting device 40 according to this embodiment will be described with reference to Fig. 4. The platform lifting device 40 is installed at the platform 4 of a desired floor, and is a device for lifting an object W to be lifted in the hoistway 1. The platform lifting device 40 is used to lift the components of the hoistway lifting device 10 described above. The platform lifting device 40 may be used primarily to lift the car frame 11 and car floor 12. Fig. 4 shows the state in which the car floor 12 is being lifted as an example.

[0036] As shown in FIG. 4, the platform 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 into the hoistway 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 arranged in the hoistway 1 is positioned higher than the base of the lifting steel frame 41 arranged in the landing 4.

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

[0039] The lifting rope 17 is wound around the above-mentioned steel frame sheave 42. The lifting rope 17 may be the lifting rope 17 of the above-mentioned hoistway lifting device 10.

[0040] The lifting hoist 18 is installed at the landing 4. The lifting hoist 18 winds up the portion of the lifting rope 17 on the first end 17a side. The lifting hoist 18 may be the same as the lifting hoist 18 of the hoistway lifting device 10.

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

[0042] The rope winding unit 22 is installed at the landing 4. The rope winding unit 22 is configured to wind up the lifting rope 17 wound up by the lifting hoist 18. The rope winding unit 22 of the hoistway lifting device 10 may be used as the rope winding unit 22.

[0043] The lifting control panel 28 may be installed at the landing 4. The lifting control panel 28 may be configured to control the above-mentioned lifting hoist 18. The lifting control panel 28 may be the same as the lifting control panel 28 of the hoistway lifting device 10.

[0044] Next, a hoistway lifting method according to this embodiment will be described with reference to Figures 5 to 8. The hoistway lifting method is a method for lifting an object W to be lifted in a hoistway 1, and is a method carried out when installing hoistway equipment. As shown in Figure 5, the hoistway lifting method according to this embodiment may include a hoistway lifting device preparation step S1, a first car frame lifting and lowering step S2, a first lifting step S3, a second car frame lifting and lowering step S4, a second lifting step S5, and a hoistway lifting device dismantling step S6.

[0045] The hoistway lifting device preparation process S1 is a process of preparing the above-mentioned hoistway lifting device 10. More specifically, as shown in Fig. 6, the hoistway lifting device preparation process S1 may include a landing lifting device preparation process S11, a car frame installation process S12, and an assembly and disassembly process S13.

[0046] As shown in Fig. 6, first, a platform lifting device preparation step S11 is carried out. The platform lifting device preparation step S11 is a step of preparing the platform lifting device 40 shown in Fig. 4. More specifically, a lifting steel frame 41 is installed so as to extend from the platform 4 of the desired floor into the hoistway 1, a steel frame sheave 42 is installed on the lifting steel frame 41, and a lifting rope 17 is wound around the steel frame 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 platform 4.

[0047] Next, as shown in Fig. 5, a car frame installation step S12 is performed. In the car frame installation step S12, the car frame 11 and the car floor 12 are lifted and installed using a hall lifting device 40. The car frame 11 and the car floor 12 may be carried into the hall 4 on the low floor and lifted into the hoistway 1 by hooking a hook 19 attached to the second end 17b of the lifting rope 17. At this time, a portion of the guide rails 2 for the passenger car may be installed in the hoistway 1 in advance, and the car frame 11 may be installed on the guide rails 2. In the car frame installation step S12, the ladder 23, the car floor handrails 13, and the working floor handrails 15 may be lifted using the hall lifting device 40 and attached to the car frame 11.

[0048] Next, an assembly and disassembly step S13 is performed. In the assembly and disassembly step S13, the hoistway lifting device 10 is assembled by attaching other components of the hoistway lifting device 10 to the car frame 11, and the platform lifting device 40 is disassembled. For example, the components of the platform lifting device 40, such as the lifting hoist 18, the rope take-up unit 22, the lifting rope 17, the hook 19, and the lifting control panel 28, may be dismantled from the platform lifting device 40 and used in the hoistway lifting device 10. The rope take-up unit 22 and the lifting rope 17 reeled out from the lifting hoist 18 are wound around a ceiling hook 3 installed on the ceiling 1a of the hoistway 1. In this way, the lifting hoist 18 may be used to lift the other components of the hoistway lifting device 10, and the hoistway lifting device 10 may be assembled.

[0049] As shown in Fig. 5, after the hoistway lifting device preparation step S1, a first car frame lifting / lowering step S2 is performed. In the first car frame lifting / lowering step S2, a hook 19 attached to the second end 17b of the lifting rope 17 is hooked on the working floor handrail 15 to drive the lifting hoist 18. This causes the car frame 11, which is the object to be lifted W, to be raised or lowered and moved to a desired lifted or lowered position. When the car frame 11 is to be raised, the lifting hoist 18 reels in the lifting rope 17. The reeled lifting rope 17 is reeled in by the rope reel unit 22. When the car frame 11 is to be lowered, the lifting hoist 18 reels out the lifting rope 17, and the lifting rope 17 is reeled out from the rope reel unit 22.

[0050] Next, the first lifting step S3 is performed. In the first lifting step S3, the object to be lifted W other than the car frame 11 is hung on the hook 19 of the lifting rope 17, and the lifting hoist 18 is driven. In this way, the object to be lifted W is lifted and attached to a predetermined position.

[0051] More specifically, as shown in FIG. 7 , first, the safety device 25 is activated (step S31). In this case, an operating button or the like of the safety device 25 is operated to release the internal locking mechanism, and the lifting hoist 18 is driven to lower the car frame 11. As a result, the gripping portion of the safety device 25 grips the safety device rope 24, and the safety 27 grips the guide rail 2. This prevents the car frame 11 from lowering, and stops the car frame 11. Next, the lifting hoist 18 is driven in the direction to lower the car frame 11 (step S32). This causes the lifting rope 17 to be unwound from the lifting hoist 18, and the tension on the lifting rope 17 is removed. Next, the hook 19 is removed from the work floor handrail 15 (step S33). Next, the lifting rope 17 is wound around the guide sheave 20, and the hook 19 is suspended (step S34). At this time, the guide sheave 20 is attached to the work floor handrail 15 via the adapter 21. Next, the hook 19 is lowered and hooked onto the object W to be lifted that has been brought into the landing 4 on the low floor, and the object W is lifted (step S35). When the object W to be lifted has been lifted to the desired lift position, the object W to be lifted is attached to a predetermined position (step S36). Thereafter, the hook 19 is removed from the object W to be lifted (step S37).

[0052] In the first lifting step S3, with the car frame 11 fixed at the desired lifted position, the objects W to be lifted are sequentially lifted and installed in their predetermined positions using the procedure described above. When the installation work of the object W to be lifted at this lifted position is completed, the process proceeds to the second car frame lifting / lowering step S4, as shown in Fig. 5. If there is only one object W to be lifted, the process proceeds to the second car frame lifting / lowering step S4 after the above-mentioned step S37.

[0053] In the second car frame lifting / lowering step S4, the hook 19 of the lifting rope 17 is hooked onto the working floor handrail 15 to drive the lifting hoist 18. This causes the car frame 11, which is the object to be lifted W, to be raised and lowered and moved to a desired lifted / lowered position.

[0054] More specifically, as shown in FIG. 8, first, the hook 19 of the lifting rope 17 is hooked onto the working floor handrail 15 (step S41). Next, the lifting hoist 18 is driven in a direction to lift the car 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 an operating lever or the like, and the safety 27 is released (step S43). Because the car frame 11 has been raised in step S42, the tension on the safety device rope 24 has been removed. Thereafter, the lifting hoist 18 is driven to raise or lower the car frame 11, which is the object to be lifted W (step S44). As a result, the car frame 11 is moved to the desired lifted or lowered position.

[0055] Next, the second lifting step S5 is performed. In the second lifting step S5, the object to be lifted W other than the car frame 11 is hung on the hook 19 of the lifting rope 17, and the lifting hoist 18 is driven. In this way, the object to be lifted W is lifted and attached to a predetermined position. The second lifting step S5 is performed in the same manner as the first lifting step S3 described above.

[0056] By repeating the car frame lifting and lowering process and the lifting process in this manner, the object W to be lifted can be lifted into the hoistway 1 and attached to a predetermined position.

[0057] After all of the objects to be lifted W have been lifted and installed in the hoistway 1, the process proceeds to the hoistway lifting device dismantling step S6 shown in Fig. 5, where the hoistway lifting device 10 is dismantled. At this time, the car frame 11 and the car floor 12 are left behind and used as components of the finished car.

[0058] Here, a general lifting method in the hoistway 1 will be described with reference to Fig. 9. Fig. 9 is a front view showing a general lifting device 50.

[0059] In the lifting device 50 shown in FIG. 9, a car floor 12 (see FIG. 1) and a work floor 14 are installed on a car frame 11, a car floor handrail 13 is installed on the car floor 12, and a work floor handrail 15 is installed on the work floor 14. A plurality of ceiling hooks 3 are installed on the ceiling 1a of the hoistway 1, and two lifting ropes 17 are suspended from the ceiling hooks 3. Two construction hoists 51 that wind up the corresponding lifting ropes 17 are attached to the work floor 14. When the construction hoists 51 wind up the lifting ropes 17, the car frame 11 rises, and when the lifting ropes 17 are let out, the car frame 11 descends. The construction hoists 51 may be configured similarly to the lifting hoist 18 described above.

[0060] A safety device rope 24 is suspended from another ceiling hook 3 on the ceiling 1a of the hoistway 1. A safety device 52 is attached to the working platform 14. The safety device 52 may be configured to be activated when the descent speed of the car frame 11 exceeds a predetermined speed, and a gripping portion grips the safety device rope 24. In this way, the car frame 11 is fixed to the safety device rope 24. The safety device 52 may be configured similarly to 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 tip of the lifting rope 17. An object W to be lifted is hung on the hook 19 and the lifting machine 53 is driven to lift the object W.

[0062] In this way, in a typical lifting device 50, a construction hoist 51 is used to raise and lower the car frame 11, and a lifting machine 53 is used to lift the object to be lifted W. For this reason, the construction hoist 51 and the lifting machine 53 are provided separately, which increases the 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 hoistway 1, and the portion of the lifting rope 17 on the side of the first end 17a is wound up by a lifting hoist 18. By hooking the hook 19 on the working floor handrail 15 and driving the lifting hoist 18, it is possible to raise and lower the car frame 11 as the object to be lifted W. On the other hand, by hooking the hook 19 on an object to be lifted W other than the car frame 11 and driving the lifting hoist 18, it is possible to lift the object to be lifted W. Therefore, the hoist for raising and lowering the car frame 11 and the lift for lifting objects W other than the car frame 11 can be unified into the lifting hoist 18. This makes it possible to reduce the number of parts of the hoistway lifting device 10.

[0064] Furthermore, according to this embodiment, when lifting an object W to be lifted other than the car frame 11, the safety device 25 can be activated to prevent the car frame 11 from descending. This allows the object W to be lifted other than the car frame 11 to be lifted.

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

[0066] Furthermore, according to this embodiment, the guide sheave 20 is attached to the work floor handrail 15 by the adapter 21. This allows the guide sheave 20 to easily guide the lifting rope 17 so that the hook 19 is positioned outside the car frame 11 when viewed from above. This further prevents the object W to be lifted from interfering with the car frame 11 when the object W to be lifted is hung on the hook 19 and lifted.

[0067] Furthermore, according to this embodiment, the lifting rope 17 wound up by the lifting hoist 18 can be wound by the rope winding section 22. This makes it possible to prevent 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 car frame 11. This allows the lifting rope 17 wound by the lifting hoist 18 to be wound by the rope winding unit 22 attached to the car frame 11. This prevents the lifting rope 17 from hanging down from the car frame 11 into the hoistway 1.

[0069] Furthermore, according to this embodiment, the safety device 25 is configured to fix the car frame 11 to the safety device rope 24 suspended from the ceiling 1a of the hoistway 1. As a result, even when an object W to be lifted other than the car frame 11 is lifted by the lifting hoist 18, the car frame 11 can be prevented from descending and stopped. Therefore, an object W to be lifted other than the car frame 11 can be lifted.

[0070] Furthermore, according to this embodiment, a safety device 25 is attached to one of the car floor 12 and the work floor 14, and an operating device 26 is attached to the other. The operating device 26 is operated by an operator to activate the safety device 25. This allows the operator to activate the safety device 25 on either the car floor 12 or the work floor 14. Therefore, it is not necessary for the operator to move between the car floor 12 and the work floor 14 to activate the safety device 25, thereby improving workability.

[0071] Furthermore, according to this embodiment, the car frame 11 is fitted with a safety 27 capable of gripping the guide rail 2. This makes it possible to further prevent the car frame 11 from descending.

[0072] Furthermore, according to this embodiment, the lifting hoist 18 of the hoistway lifting device 10 is used as the lifting machine of the platform lifting device 40 used to lift the components of the hoistway lifting device 10. This allows the lifting machine of the platform lifting device 40 and the hoisting machine of the hoistway lifting device 10 to be unified into the lifting hoist 18.

[0073] In the above-described embodiment, an example has been described in which the object W to be lifted is placed to the side of the car frame 11 and lifted. However, the embodiment is not limited to this. For example, as shown in FIG. 10 , the object W to be lifted may be placed behind the car floor 12 and lifted. In this case, the guide sheave 20 is placed outside the car frame 11 and behind the car frame 11. The adapter 21 may be formed to extend upward from the working floor handrail 15 and extend rearward from the working floor handrail 15.

[0074] In the above-described embodiment, an example has been 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 FIG. 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 car floor 12, and each safety device 25 may be configured to grip the corresponding safety device rope 24. This shortens the distance that the worker must travel to activate the safety devices 25, thereby improving workability. Two actuating devices 26 that activate corresponding safety devices 25 may be attached to the work floor 14. In the example shown in FIG. 11, the safety device 25 does not have to activate the safety 27.

[0075] Furthermore, in the above-described embodiment, an example has been described in which the rope take-up unit 22 is attached to the car frame 11. However, the embodiment is not limited to this. For example, as shown in FIG. 12 , the rope take-up unit 22 may be attached to the bottom of the hoistway 1. In this case, the lifting rope 17 wound up by the lifting hoist 18 is suspended downward from the car frame 11 and wound up by the rope take-up unit 22. By installing the rope take-up unit 22 at the bottom of the hoistway 1, the weight of the wound lifting rope 17 can be prevented from being applied to the car frame 11. This is particularly advantageous when the elevator car has a long ascending / descending stroke.

[0076] In the above-described embodiment, an example has been described in which the tail cord 29 supplies power to the lifting control panel 28. However, the embodiment is not limited to this. For example, as shown in FIG. 13 , the hoistway 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 working 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 it possible to eliminate the need for the tail cord 29. By installing the battery panel 43 on the working platform 14, it can be placed near the lifting control panel 28, thereby shortening the power wiring.

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

[0078] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0079] 1: elevator shaft, 1a: ceiling, 1b: bottom, 2: guide rail, 4: landing, 10: elevator shaft lifting device, 11: car frame, 11a: lower frame member, 11b: vertical frame member, 11c: upper frame member, 12: car floor, 13: car floor handrail, 14: working floor, 15: working floor 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 part, 24: safety device rope, 25: safety device, 26: operating device, 27: safety, 40: landing lifting device, W: object to be lifted

Claims

1. An elevator shaft lifting device for lifting an object to be lifted in an elevator shaft in which a part of a pair of guide rails of an elevator is installed, a car frame that can be raised and lowered along the guide rail; a car floor attached to a lower portion of the car frame; a car floor handrail extending upward from the car floor; a work platform attached to the top of the car frame; A work floor handrail extending upward from the work floor; 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 hoist attached to an upper portion of the car frame and configured to hoist up a portion of the lifting rope on the first end side; a hook attached to the second end of the lifting rope; a safety device that prevents the car frame from descending; a guide sheave that guides the lifting rope so that the hook is positioned outside the car frame when viewed from above when the object to be lifted other than the car frame is hung on the hook and lifted; Equipped with When the car frame as the lifting object is raised or lowered, the hook is hung on the working floor handrail to drive the lifting hoist. Elevator shaft lifting device.

2. Further provided is an adapter for attaching the guide sheave to the work floor handrail. The elevator shaft lifting device according to claim 1.

3. The first end of the lifting rope is fixed to a rope winding section that winds up the lifting rope wound up by the lifting hoist. The elevator shaft lifting device according to claim 1 or 2.

4. The rope winding section is attached to the car frame. The elevator shaft lifting device according to claim 3.

5. The rope winder is attached to the bottom of the hoistway. The elevator shaft lifting device according to claim 3.

6. a safety device rope suspended from the ceiling of the elevator shaft; the safety device is configured to secure the car frame to the safety device rope; The elevator shaft lifting device according to claim 1 or 2.

7. Further comprising an actuation device for actuating the safety device, the safety device is attached to one of the car 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.

8. The elevator further includes a pair of safeties attached to the car frame and capable of gripping the corresponding guide rails. The elevator shaft lifting device according to claim 1 or 2.

9. The elevator further includes a battery panel that is installed on the car frame and supplies power to the lifting machine. The elevator shaft lifting device according to claim 1 or 2.

10. An elevator hoistway lifting method for lifting an object to be lifted in a hoistway in which a part of an elevator guide rail is installed, comprising: a shaft lifting device preparation step of preparing the shaft lifting device for an elevator according to claim 1 or 2; a car frame lifting / lowering process in which the hook is hung on the working floor handrail to drive the lifting hoist and lift / lower the car frame as the object to be lifted; a lifting step of hanging the object to be lifted other than the car frame on the hook and driving the lifting hoist to lift the object to be lifted, In the lifting process, the safety device prevents the car frame from descending. Elevator shaft lifting method.

11. The elevator shaft lifting device preparation process includes: Preparing a platform lifting device including the lifting hoist at the platform; using the platform lifting device to lift the car frame and the car floor and install the car frame and the car floor; assembling the hoistway lifting device by attaching other components of the hoistway lifting device to the car frame and dismantling the landing lifting device; Including, The elevator hoistway lifting method according to claim 10.

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