Construction elevator and method for extending compensation rope of construction elevator

Abstract

The construction elevator includes a compensating rope winding shaft, a lifting body, a pulley, a first rope holding device, and a second rope holding device. The pulley is provided between the compensating rope winding shaft and the lifting body in the compensating rope, and the compensating rope is wound from the compensating rope winding shaft. The first rope holding device releasably holds the compensating rope on the compensating rope winding shaft side with respect to the pulley. The second rope holding device releasably holds the compensating rope on the lifting body side with respect to the pulley. Furthermore, the pulley is movably supported in the lifting direction of the lifting body.

Description

Technical Field

[0001] This invention relates to construction elevators and a method for extending the compensating rope of construction elevators. Background Technology

[0002] In recent years, a construction elevator has been proposed, which is installed on building structures under construction and used to transport materials and personnel. This construction elevator expands the car's lifting range—its operational range—by raising the machine room unit, which includes a traction machine and control panel, according to the progress of the building structure's construction. Furthermore, as the car's lifting range expands, the main ropes connected to the car are extended.

[0003] For example, Patent Document 1 describes a conventional construction elevator. In the technology described in Patent Document 1, to prevent the main rope from being pulled out of the main rope reel due to its own weight against the operator's intention when the machine room unit is raised, a gripping device holds the main rope with a prescribed force. Furthermore, by raising the machine room unit, the main rope slides on the gripping device, thus extending the main rope.

[0004] In addition, construction elevators are equipped with compensating chains on the car and counterweight to balance their weight during vertical movement. However, in elevators designed for long-term construction, compensating ropes are used instead of compensating chains for strength reasons. Furthermore, as the car's vertical movement increases, these compensating ropes need to be extended. Existing technical documents Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2001-287881 Summary of the Invention The technical problem that the invention aims to solve

[0006] However, in the case of compensating ropes, they cannot be extended by adding them like compensating chains. It is necessary to carry out the lifting operation of the machine room and the extension operation of the compensating rope separately, which makes the extension operation of the compensating rope very troublesome.

[0007] The objective is to provide, in view of the above-mentioned problems, a construction elevator that can easily extend its compensating rope and a method for extending the compensating rope of the construction elevator. Technical means for solving technical problems

[0008] To solve the above problems and achieve the objective, the construction elevator includes a compensating rope reel, a lifting body, a pulley, a first rope holding device, and a second rope holding device. A compensating rope is wound on the compensating rope reel. The lifting body has the compensating rope wound from the compensating rope reel and moves up and down in the shaft of the building structure. The pulley is positioned between the compensating rope reel and the lifting body, and has the compensating rope wound from the compensating rope reel. The first rope holding device releasably holds the compensating rope on the side of the pulley closest to the compensating rope reel. The second rope holding device releasably holds the compensating rope on the side of the pulley closest to the lifting body. Furthermore, the pulley is movably supported along the lifting direction of the lifting body.

[0009] In addition, the method for extending the compensating rope of the construction elevator having the above structure includes the steps shown in (1) to (4) below. (1) The procedure of holding the compensating rope with the second rope holding device. (2) The process of releasing the grip of the first rope holding device on the compensating rope, causing the pulley to rise to the specified height along the lifting direction of the lifting body, and drawing the compensating rope out from the compensating rope reel. (3) After the pulley is raised to the specified height, the compensating rope is held by the first rope holding device and the second rope holding device is released from holding the compensating rope. (4) The process of raising the machine room unit equipped with the second rope holding device to a specified height. Invention Effects

[0010] Based on the above-described construction elevator and the method for extending the compensating rope, the compensating rope can be easily extended. Attached Figure Description

[0011] Figure 1 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 1. Figure 2 This is a diagram showing the state of the gripping device in the construction elevator according to Embodiment Example 1 during normal operation. Figure 3 It is a diagram showing the method of extending the compensating rope in the construction elevator according to Embodiment Example 1, and also showing the state of the pulley during movement. Figure 4 This is a diagram showing the method for extending the compensating rope in the construction elevator according to Embodiment Example 1, and also showing the state of the machine room unit during movement. Figure 5 It means Figure 4 A diagram showing the state of the gripping device as shown. Figure 6 This diagram illustrates the method for extending the compensating rope in the construction elevator according to Embodiment Example 1, and also shows the state of the machine room unit after its movement. Figure 7 It means Figure 6 A diagram showing the state of the gripping device as shown. Figure 8 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 2. Figure 9 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 3. Figure 10 This diagram illustrates the method for extending the main rope in the construction elevator according to Embodiment Example 3, and also shows the state of the second machine room during movement. Figure 11 This diagram illustrates the method for extending the main rope in the construction elevator according to Embodiment Example 3, and also shows the state of the first machine room during movement. Figure 12 This is a diagram showing the method for extending the compensating rope in the construction elevator according to Embodiment Example 3, and also showing the state of the machine room unit after it has been moved. Figure 13 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 4. Detailed Implementation

[0012] The following is for reference Figures 1 to 13 This describes the construction elevator and the method for extending the main rope involved in the implementation example. Additionally, common components are labeled with the same reference numerals in all figures.

[0013] 1. Implementation Example 1 1-1. Structural Example of a Construction Elevator First, refer to Figure 1 The structure of the construction elevator involved in Implementation Example 1 (hereinafter referred to as "this Example") will be described. Figure 1 This is a simplified structural diagram of the construction elevator used in this example.

[0014] Figure 1 The elevator shown is a construction elevator installed in a building structure under construction, used for transporting materials and personnel. For example... Figure 1 As shown, the construction elevator 1 includes a support member 2 disposed on the upper part of the shaft 100 of the building structure, a machine room unit 3, and a hoist 6 for lifting the machine room unit 3. In addition, the construction elevator 1 includes a traction machine 9, a main rope 10, a car 11 for loading people or materials, a counterweight 12, a compensating rope 14, and pulleys 19.

[0015] The car 11 and counterweight 12 represent an example of a lifting body. The positional relationship between the car 11 and the counterweight 12 can be reversed. That is, in Figure 1In this context, the counterweight can be represented by number 11, and the car can be represented by number 12. Hereinafter, the lifting direction of the car 11 and the counterweight 12, which serve as the lifting bodies, will be defined as the up-down direction.

[0016] The car 11 has a car-side pulley 11a and a car-side compensating pulley 11b. The car-side pulley 11a is located at the upper part of the car 11, and the car-side compensating pulley 11b is located at the lower part of the car 11. The counterweight 12 has a counterweight-side pulley 12a and a counterweight-side compensating pulley 12b. The counterweight-side pulley 11a is located at the upper part of the counterweight 12, and the counterweight-side compensating pulley 12b is located at the lower part of the counterweight 12.

[0017] The main rope 10 is wound around the car-side pulley 10a and the counterweight-side pulley 12a. The main rope 10 is also wound around the traction sheave of the traction machine 9, which is located in the machine room unit 3 (described later). Furthermore, both ends of the main rope 10 are fixed to the machine room unit 3 via rope fixing parts 18a and 18b. Specifically, one end of the main rope 10 is fixed to the rope fixing part 18a, and it is wound in the order of car-side pulley 10a, traction machine 9, and counterweight-side pulley 12a. The other end of the main rope 10 is fixed to the rope fixing part 18b located in the machine room unit 3. The car 11 and the counterweight 12 are moved up and down within the hoistway 100 by the traction machine 9.

[0018] In addition, a compensating rope 14 is wound around the car-side compensating pulley 11b of the car 11 and the counterweight-side compensating pulley 12b of the counterweight 12. The detailed structure of the compensating rope 14 will be described later.

[0019] Furthermore, a buffer 21 and lower pulleys 22 and 23 are installed in the lower part of the shaft 100 in the vertical direction, i.e., the pit. The buffer 21 is located in the lower part of the car 11 and the counterweight 12 in the vertical direction. A compensating rope 14 is wound around the lower pulleys 22 and 23.

[0020] The support member 2 is installed in the beam 101a at the uppermost part of the shaft 100 or in a recess on the wall of the shaft 100. A hoist 6 is installed on the support member 2. The machine room unit 3 is located below the support member 2 in the vertical direction. Furthermore, the machine room unit 3 is hoisted from the support member 2 via the hoist 6. The machine room unit 3 is supported by the hoist 6 in a liftable (movable) manner. The hoist 6 can be installed in the first machine room 4 and the second machine room 5 of the machine room unit 3 (described later), and the hoisting rope of the hoist 6 is installed in the support member 2.

[0021] In addition, one of the multiple hoists 6 is connected to the pulley 19 described later. Moreover, the hoist 6 supports the pulley 19 in a vertically movable manner.

[0022] Computer room unit 3 has a first computer room 4 and a second computer room 5. The first computer room 4 is located below the second computer room 5 in the vertical direction.

[0023] The movable support mechanism 7 is located at the lower part of the first machine room 4 in the vertical direction. The movable support mechanism 7 is configured to extend and retract from the first machine room 4 toward the wall of the hoistway 100. Furthermore, the movable support mechanism 7 is mounted on beams 101b, 101c, 101d provided in the hoistway 100 or in a recess provided on the wall of the hoistway 100. The movable support mechanism 7 supports the machine room unit 3 or the first machine room 4 at a predetermined position in the hoistway 100. The movable support mechanism 7 is not limited to the above-described mechanism; various other fixing mechanisms may also be used, such as guide rails that can support the car 11 vertically, engaging members that engage with the wall of the hoistway 100, and fastening members that are securely fixed to the wall.

[0024] Rope fixing parts 18a and 18b for fixing the ends of the main rope 10 are provided in the first machine room 4. In addition, a traction machine 9 is provided in the first machine room 4.

[0025] The second machine room 5 is equipped with a first rope holding device 16, a second rope holding device 17, a compensating rope reel 15, a control panel 8, and a tail cable reel 20. The control panel 8 controls the traction machine 9 and the car 11, etc. Furthermore, the control panel 8 and the car 11 are electrically connected via a tail cable 13. The tail cable reel 20 is located near the control panel 8. The extended portion of the tail cable 13 is wound on the tail cable reel 20. Moreover, when the machine room unit 3 is raised, the tail cable is drawn out from the tail cable reel 20.

[0026] The extended portion of the compensating rope 14 is wound on the compensating rope reel 15. Furthermore, when the machine room unit 3 is raised, the extended portion of the compensating rope 14 is drawn out from the compensating rope reel 15 via the pulley 19. While this example illustrates the placement of the compensating rope reel 15 within the machine room unit 3, it is not a limitation; the compensating rope reel 15 may be located at the lower part of the shaft 100, i.e., in the pit, or on the outer side of the shaft 100.

[0027] Additionally, during normal operation, a pulley 19 supported by a hoist 6 is installed in the second machine room 5. The pulley 19 is positioned between the compensating rope reel 15 and the car 11 (representing the lifting body) and the counterweight 12. The compensating rope 14, extending from the compensating rope reel 15, is wound around the pulley 19. Furthermore, the pulley 19 changes the direction in which the compensating rope 14 extends from upward to downward.

[0028] As described above, the compensating rope 14 is wound on the compensating rope reel 15 and led out from the compensating rope reel 15. Therefore, one end of the compensating rope 14 is fixed to the compensating rope reel 15.

[0029] The compensating rope 14 is led out from the compensating rope reel 15, and its direction of extension from the pulley 19 changes from upward to downward, and it is wound around the first lower pulley 23 located at the bottom of the hoistway 100. Furthermore, the compensating rope 14 is wound sequentially around the car-side compensating pulley 11b, the second lower pulley 22, and the counterweight-side compensating pulley 12b via the first lower pulley 23. Moreover, the other end of the compensating rope 14 extending from the counterweight-side compensating pulley 12b is fixed to the bottom of the hoistway 100, i.e., the pit.

[0030] A first rope gripping device 16 is provided between the compensating rope reel 15 and the pulley 19. The first rope gripping device 16 can openly grip the compensating rope 14 extending from the compensating rope reel 15. In addition, the first rope gripping device 16 grips the compensating rope 14 on the rope reel side (hereinafter referred to as "first side") A relative to the pulley 19 in the compensating rope 14. Moreover, the first rope gripping device 16 restricts the movement of the compensating rope 14 by gripping it.

[0031] Additionally, a second rope gripping device 17 is provided near the first rope gripping device 16 and the pulley 19. The second rope gripping device 17 is positioned relative to the pulley 19 in the compensating rope 14 on the lifting body side, i.e., the side between the car 11 and the counterweight 12 (hereinafter referred to as the second side) B. The second rope gripping device 17 releasably grips the compensating rope 14 in the same manner as the first rope gripping device 16. Furthermore, the second rope gripping device 17 restricts the movement of the compensating rope 14 by gripping it.

[0032] In the accompanying drawings, the state of holding the compensation rope 14 is indicated by black in the first rope holding device 16 and the second rope holding device 17, and the state of releasing the compensation rope 14 is indicated by blank.

[0033] Figure 2 This diagram shows the state of the first rope gripping device 16 and the second rope gripping device 17 during normal operation. like Figure 2 As shown, during normal operation of the construction elevator 1, the first rope gripping device 16 is released, and the second rope gripping device 17 is activated to grip the compensating rope 14. Therefore, one end of the compensating rope 14 is fixed to the second rope gripping device 17, and the other end of the compensating rope 14 is fixed to the pit of the shaft 100.

[0034] This example illustrates how the second rope gripping device 17 secures one end of the compensating rope 14 by gripping it, but it is not limited to this. For example, the second rope gripping device 17 can be released, and one end of the compensating rope 14 can be secured using the first rope gripping device 16. Alternatively, the compensating rope reel 15, the first rope gripping device 16, and the second rope gripping device 17 can be arranged in the first machine room 4.

[0035] In the construction elevator 1 of this example, the machine room unit 3 is configured as a two-story structure consisting of a first machine room 4 and a second machine room 5. This reduces the horizontal space occupied by the machine room unit 3 in the hoistway 100. The machine room unit 3 is not limited to a two-story structure; it can also be a single-story structure, housing a control panel 8, traction machine 9, rope fixing parts 18a and 18b, compensating rope reel 15, first rope holding device 16, second rope holding device 17, and traveling cable reel 20. Alternatively, the first machine room 4 and the second machine room 5 can be divided into two or more machine rooms.

[0036] 1-2. Methods for extending compensating ropes Next, refer to Figures 3 to 7 This describes the method for extending the compensating rope 14 in the construction elevator 1 with the above structure, and the method for extending the operating floor when the machine room unit 3 rises. Figures 3 to 7 This is an explanatory diagram showing the method of extending the compensating rope 14.

[0037] First, such as Figure 3 As shown, the counterweight 12 is lowered into the pit, and the counterweight 12 is placed on the buffer 21 set in the pit. Next, as in normal operation, while holding the compensating rope 14 with the second rope holding device 17, the grip of the compensating rope 14 by the first rope holding device 16 is released.

[0038] Next, the hoist 6 connected to the pulley 19 is driven to raise the pulley 19 to a predetermined height. At this time, the other end of the compensating rope 14, i.e., the second side B relative to the pulley 19, is fixed by the second rope holding device 17. In addition, one end of the compensating rope 14, i.e., the first side A which is the side of the compensating rope reel 15, is not fixed. Therefore, the compensating rope 14 can be led out from the compensating rope reel 15 by raising the pulley 19. In addition, since the compensating rope 14 is folded back through the pulley 19, the length (height) by which the pulley 19 is raised only needs to be about half the length of the extended portion of the compensating rope 14.

[0039] When the pulley 19 is moved, one end of the compensating rope 14 is secured by the second rope holding device 17 provided on the machine room unit 3. Therefore, the compensating rope 14 is not drawn out from the first machine room 4 of the machine room unit 3 in the vertical direction. Thus, even during the movement of the pulley 19, the traction machine 9 can be driven to use the car 11.

[0040] Next, as Figure 4 As shown, the car 11 and the machine room unit 3 are connected by a chain 201. The connection between the car 11 and the machine room unit 3 can also be performed before the pulley 19 is raised.

[0041] When the connection between the car 11 and the machine room unit 3 is completed, such as Figure 5 As shown, the compensation rope 14 is held by the first rope holding device 16, and the second rope holding device 17 releases its grip on the compensation rope 14. Therefore, one end of the compensation rope 14 is fixed to the first rope holding device 16, and the other end of the compensation rope 14 is fixed to the pit of the shaft 100.

[0042] Next, as Figure 4 As shown, the movable support mechanism 7 is reduced in size, and the support of the machine room unit 3 is released using the movable support mechanism 7. Then, the hoist 6 connected to the machine room unit 3 is driven, thereby raising the machine room unit 3 to a specified height (at... Figure 4 and Figure 6 In the example shown, beam 101c is used. Therefore, in Figure 3 In the operation shown, the extended portion of the compensating rope 14, which is drawn from the compensating rope reel 15, is sent to the car 11 and the counterweight 12 side via the pulley 19 and the second rope holding device 17.

[0043] If computer room unit 3 rises to the specified height, then as follows Figure 6 As shown, the drive of the hoist 6 is stopped, and the movable support mechanism 7 is extended, placing the movable support mechanism 7 on the beam 101c. This allows the machine room unit 3 to rise to a specified height.

[0044] Next, as Figure 6 and Figure 7 As shown, the compensating rope 14 is held by the second rope holding device 17. This prevents the compensating rope 14 from being pulled out of the compensating rope reel 15 due to its own weight. Then, the first rope holding device 16 releases its grip on the compensating rope 14. Next, the connection between the car 11 and the machine room unit 3 is released, and the counterweight 12 is pulled from the buffer 21. By performing these procedures, the extension of the compensating rope 14 and the expansion of the operating floors of the construction elevator 1 are completed.

[0045] According to the extension method of the construction elevator 1 and the compensating rope 14 in this example, the extension operation of the compensating rope 14 can also be carried out simultaneously with the lifting of the machine room unit 3. As a result, the extension operation of the compensating rope 14 can be carried out easily, and the time spent on the extension operation of the operating floor of the construction elevator 1 can be reduced.

[0046] Furthermore, the compensating rope 14 can be extended without slipping on the first rope gripping device 16 or the second rope gripping device 17. This prevents wear on the compensating rope 14 and allows for easy adjustment of the gripping force of the rope gripping devices 16 and 17.

[0047] 2. Implementation Example 2 Next, refer to Figure 8The construction elevator involved in Implementation Example 2 will be described. Figure 8 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 2.

[0048] The construction elevator described in Embodiment 2 differs from the construction elevator described in Embodiment 1 in the order in which the compensating rope is laid on the car and the counterweight. Therefore, the parts common to the construction elevator 1 described in Embodiment 1 are marked with the same reference numerals and repeated descriptions are omitted.

[0049] like Figure 8 As shown, the construction elevator 1B includes a machine room unit 3B, a car 11, a counterweight 12, and pulleys 19. The machine room unit 3B is equipped with a compensating rope reel 15, a traction machine 9, a control panel 8, a first rope holding device 16, and a second rope holding device 17.

[0050] In the construction elevator 1B of Embodiment Example 2, the compensating rope 14 is led out from the compensating rope reel 15 to the pulley 19, and then wound sequentially on the counterweight-side compensating pulley 12b, the second lower pulley 22, and the car-side compensating pulley 11b via the first lower pulley 23. Furthermore, the other end of the compensating rope 14 extending from the car-side compensating pulley 11b is fixed to the pit of the hoistway 100.

[0051] The second rope holding device 17 is disposed between the pulley 19 of the compensating rope 14 and the first lower pulley 23. Moreover, the second rope holding device 17 can releasably hold the compensating rope 14 on the side of the lifting body relative to the pulley 19 in the compensating rope 14, that is, the side of the counterweight 12 (hereinafter referred to as the second side) B'.

[0052] The other structures are the same as those of the construction elevator 1 described in Embodiment Example 1, so these descriptions are omitted. The construction elevator 1B of Embodiment Example 2 also achieves the same effects as the construction elevator 1 of Embodiment Example 1 described above.

[0053] 3. Implementation Example 3 Next, refer to Figures 9 to 12 This describes the construction elevator involved in Implementation Example 3. Figure 9 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 2. Figures 10 to 12 This is a diagram illustrating the method for extending the compensating rope in the construction elevator according to Embodiment Example 2.

[0054] The difference between the construction elevator of Embodiment 3 and the construction elevator 1 of Embodiment 1 lies in the structure of the machine room unit. Therefore, the parts common to the construction elevator 1 involved in Embodiment 1 will be marked with the same reference numerals and repeated descriptions will be omitted.

[0055] like Figure 9 As shown, the construction elevator 1C includes a machine room unit 3C, which is composed of a first machine room 4 and a second machine room 5. The second machine room 5 is located above the first machine room 4 in the vertical direction. Moreover, the first machine room 4 and the second machine room 5 are detachably connected and are independently lifted by the hoist 6.

[0056] The first machine room 4 is equipped with a traction machine 9, rope fixing parts 18a and 18b, compensating rope reel 15, a first rope holding device 16, and a second rope holding device 17. Furthermore, a movable support mechanism 7 is located at the lower part of the first machine room 4.

[0057] The second equipment room 5 is equipped with a control panel 8, a traveling cable reel 20, and a pulley 19. The pulley 19 is rotatably supported by the second equipment room 5. Furthermore, the pulley 19 rises vertically along with the second equipment room 5 as the second equipment room 5 is lifted.

[0058] The compensating rope 14 wound on the compensating rope reel 15 is led out to the pulley 19 provided in the second machine room 5. Moreover, the first rope holding device 16 is disposed between the compensating rope reel 15 and the pulley 19 in the first machine room 4, and can releasably hold the first side A of the compensating rope 14.

[0059] The compensating rope 14, which is folded downwards in the vertical direction by pulley 19, passes through the first machine room 4 from the second machine room 5. Furthermore, a second rope holding device 17 is provided at the portion of the compensating rope 14 extending downwards in the vertical direction within the first machine room 4. The second rope holding device 17 can releasably hold the second side B of the compensating rope 14. Alternatively, the second rope holding device 17 can be installed in the second machine room 5.

[0060] During normal operation of the construction elevator 1C, the first rope holding device 16 is released, and the second rope holding device 17 holds the second side B of the compensating rope 14. Therefore, one end of the compensating rope 14 is fixed to the second rope holding device 17, and the other end of the compensating rope 14 is fixed to the pit of the hoistway 100. Alternatively, the first rope holding device 16 can hold the first side A of the compensating rope 14, causing the second rope holding device 17 to be released.

[0061] Next, refer to Figures 10 to 12 This describes the method for extending the compensating rope 14 in the construction elevator 1C of Embodiment Example 3. like Figure 10As shown, when extending the compensating rope 14, the car 11 and the first machine room 4 are first connected by the chain 201 to secure the car 11. Then, the counterweight 12 is lowered into the pit and placed on the buffer 21 located in the pit. Thus, the compensating rope 14 is not subjected to tension from the car 11 and the counterweight 12.

[0062] Next, while holding the compensating rope 14 with the second rope gripping device 17, release the grip of the first rope gripping device 16 on the compensating rope 14. While the first rope gripping device 16 is holding the compensating rope 14, release the grip of the first rope gripping device 16 on the compensating rope 14. Then, separate the first machine room 4 and the second machine room 5.

[0063] Next, the hoist 6 connected to the second machine room 5 is activated to raise the second machine room 5 only to the specified height (in Figure 10 In the example shown, beam 101b is used. Since the compensating rope 14 is folded back through pulley 19, the length (height) by which the second machine room 5 is raised is approximately half the length of the extended portion of the compensating rope 14. By raising the second machine room 5, the pulley 19 installed in the second machine room 5 also rises. When the second machine room 5 rises to the specified height, the hoist 6 is stopped, and the second machine room 5 and the pulley 19 are temporarily secured using the hoist 6 or a second machine room support mechanism (not shown).

[0064] Here, the other end of the compensating rope 14 is fixed by the second rope holding device 17, but one end of the compensating rope 14, i.e., the side of the compensating rope reel 15, is not fixed. Therefore, as the second machine room 5 and the pulley 19 rise, the compensating rope 14 on the side of the compensating rope reel 15 is stretched, and the extended portion of the compensating rope 14 is drawn out from the compensating rope reel 15. Thus, the rising action of the second machine room 5 and the pulley 19 and the action of drawing out the compensating rope 14 from the compensating rope reel 15 can be performed simultaneously.

[0065] When the second machine room 5 is moved, one end of the compensating rope 14 is secured by the second rope holding device 17 provided in the first machine room 4. Therefore, the compensating rope 14 is not pulled out from the first machine room 4 in the vertical direction. Thus, even during the movement of the second machine room 5, the traction machine 9 can be driven to use the car 11.

[0066] Next, as Figure 11 As shown, while the first rope holding device 16 holds the compensating rope 14, the second rope holding device 17 releases its grip on the compensating rope 14. Therefore, the other end of the compensating rope 14 is fixed to the bottom of the shaft 100, and one end of the compensating rope 14 is fixed to the first rope holding device 16.

[0067] Next, the movable support mechanism 7 is retracted, thereby releasing the support of the movable support mechanism 7 on the first machine room 4. Then, the hoist 6 connected to the first machine room 4 is activated, thereby raising the first machine room 4 to a predetermined height (at... Figure 11 and Figure 12 In the example shown, beam 101c is used. Therefore, in Figure 10 In the operation shown, the extended portion of the compensating rope 14, which is drawn from the compensating rope reel 15, is sent to the counterweight 12 and the car 11 side via the pulley 19 and the second rope holding device 17.

[0068] If the first machine room 4 rises to the specified height, then the hoist 6 will stop. Then, as... Figure 12 As shown, the movable support mechanism 7 is extended and placed on the beam 101c. Furthermore, the first machine room 4 and the second machine room 5 are connected. This allows the machine room unit 3C, composed of the first machine room 4 and the second machine room 5, to be raised to a specified height.

[0069] Next, as Figure 12 As shown, the compensating rope 14 is held by the second rope holding device 17. This prevents the compensating rope 14 from being pulled out of the compensating rope reel 15 due to its own weight. Then, the first rope holding device 16 releases its grip on the compensating rope 14. Next, the connection between the car 11 and the machine room unit 3C is released, and the counterweight 12 is pulled from the buffer 21. By performing these steps, the extension of the compensating rope 14 and the expansion of the operating floors of the construction elevator 1 are completed.

[0070] Furthermore, the computer room unit 3C is divided into computer room 4 (first computer room) and computer room 5 (second computer room), and each is lifted independently. This reduces the weight applied to the hoist 6 and prevents the hoist 6 from becoming too large.

[0071] The other structures are the same as those of the construction elevator 1 described in Embodiment Example 1, so these descriptions are omitted. The construction elevator 1C of Embodiment Example 3 also achieves the same effects as the construction elevator 1 of Embodiment Example 1 described above.

[0072] 4. Implementation Example 2 Next, refer to Figure 13 The construction elevator involved in Implementation Example 4 will be described. Figure 13 This is a simplified structural diagram of the construction elevator involved in Embodiment Example 4.

[0073] In the construction elevator described in Embodiment 4, a movable support mechanism 7 is also provided in the second machine room 5 of the construction elevator 1C in Embodiment 3. Therefore, the common parts with the construction elevator 1 in Embodiment 1 and the construction elevator 1C in Embodiment 3 are marked with the same reference numerals and repeated descriptions are omitted.

[0074] like Figure 13 As shown, the construction elevator 1D includes a machine room unit 3D, which is composed of a first machine room 4D and a second machine room 5D. The first machine room 4D is equipped with a traction machine 9, rope fixing parts 18a and 18b, a compensating rope reel 15, a first rope holding device 16, and a second rope holding device 17. Furthermore, a movable support mechanism 7 is located at the lower part of the first machine room 4D.

[0075] A control panel 8, a traveling cable reel 20, and a pulley 19 are installed in the second equipment room 5D. Additionally, a movable support mechanism 7 is installed in the lower part of the second equipment room 5D in the same manner as in the first equipment room 4D. The structure of the movable support mechanism 7 in the second equipment room 5D is the same as that in the first equipment room 4D, therefore its description is omitted.

[0076] like Figure 13 As shown, during the operation of the construction elevator 1D, the second rope holding device 17 operates to hold the second side B of the compensating rope 14, while the first rope holding device 16 is released. Therefore, one end of the compensating rope 14 is fixed to the second rope holding device 17, and the other end of the compensating rope 14 is fixed to the pit of the hoistway 100.

[0077] Even in the construction elevator 1D according to Embodiment Example 4, the second rope holding device 17 can be released, the compensation rope 14 can be held by the first rope holding device 16, and one end of the compensation rope 14 can be fixed by the first rope holding device 16.

[0078] Furthermore, in the construction elevator 1D according to Embodiment Example 4, a movable support mechanism 7 is also provided in the second machine room 5D. Therefore, as Figure 13 As shown, the first machine room 4D can be installed on beam 101d, and the second machine room 5D can be installed on beam 101c, which is located vertically above beam 101d. Thus, according to the construction elevator 1D of Embodiment Example 4, the first machine room 4D and the second machine room 5D can be installed in different locations.

[0079] Therefore, while driving the traction machine 9 installed in the first machine room 4D to perform the lifting and lowering operation of the car 11, the height of the second machine room 5D can be changed. Thus, the construction elevator 1D can operate normally while simultaneously performing the operation of drawing the compensating rope 14 from the compensating rope reel 15. As a result, the operation of drawing the compensating rope 14 can be performed without stopping the lifting and lowering operation of the car 11, thereby improving work efficiency.

[0080] The other structures are the same as those of the construction elevator 1 described in Embodiment Example 1, so these descriptions are omitted. The construction elevator 1D of Embodiment Example 4 can also achieve the same effects as the construction elevator 1 described in Embodiment Example 1 and the construction elevator 1C described in Embodiment Example 3.

[0081] Furthermore, the present invention is not limited to the embodiments described above and shown in the accompanying drawings, and various modifications can be made without departing from the spirit of the invention as described in the claims.

[0082] In this specification, terms such as “parallel” and “orthogonal” are used, but they do not only mean strictly “parallel” and “orthogonal”. Rather, they include both “parallel” and “orthogonal”, and can also refer to a state of “roughly parallel” or “roughly orthogonal” within the range that allows them to perform their functions.

[0083] The number of compensating ropes is not limited to one; multiple compensating ropes can be used. Furthermore, multiple first rope gripping devices and second rope gripping devices can be installed in accordance with the number of compensating ropes. Alternatively, multiple first rope gripping devices and second rope gripping devices can be installed for a single compensating rope. Label Explanation

[0084] 1, 1B, 1C, 1D…Construction elevator; 2…Supporting components; 3, 3B, 3C, 3D…Machine room units; 4, 4D…First machine room; 5, 5D…Second machine room; 6…Hoist; 7…Modible support mechanism; 8…Control panel; 9…Traction machine; 10…Main rope; 11…Car (lifting body); 11a…Car side pulley; 11b…Car side compensating pulley; 12…Counterweight (lifting body); 12a…Counterweight side pulley; 12b…Counterweight side compensating pulley; 13…Traveling cable; 14…Compensating rope; 15…Compensating rope reel; 16…First rope holding device; 17…Second rope holding device; 19…Pulley; 20…Traveling cable reel; 100…Hallway; 101a, 101b, 101c, 101d…Beams.

Claims

1. A construction elevator, characterized in that, include: A compensating rope reel with the compensating rope wound on it; A lifting body, on which the compensating rope is wound from the compensating rope reel, is raised and lowered in the shaft of the building structure; A pulley is disposed between the compensating rope reel on the compensating rope and the lifting body, and the compensating rope leading out from the compensating rope reel is wound around it; A first rope gripping device that can releasably grip the compensating rope relative to the pulley on the side of the compensating rope reel; as well as A second rope gripping device, which can releasably grip the compensating rope relative to the pulley on the lifting body side. The first rope gripping device The pulley is movably supported along the lifting direction of the lifting body.

2. The construction elevator as described in claim 1, characterized in that, Also includes: A machine room unit is provided for the traction machine that moves the lifting body up and down. as well as A hoist that can lift and support the computer room unit.

3. The construction elevator as described in claim 2, characterized in that, The pulley is lifted independently of the computer room unit.

4. The construction elevator as described in claim 2, characterized in that, The pulley is rotatably supported by the computer room unit and is lifted together with the computer room unit.

5. The construction elevator as described in claim 2, characterized in that, The computer room unit is divided into multiple computer rooms.

6. The construction elevator as described in claim 5, characterized in that, The computer room unit has: A first machine room equipped with the first rope gripping device and the second rope gripping device; and The second machine room is located at the upper part of the first machine room in the vertical direction and is equipped with the pulley.

7. A method for extending the compensating rope of a construction elevator. The construction elevator includes: A compensating rope reel wound with a compensating rope; a lifting body wound with the compensating rope extending from the compensating rope reel and used for lifting and lowering within a shaft of a building structure; a pulley disposed between the compensating rope reel and the lifting body, and with the compensating rope extending from the compensating rope reel wound on it; and a first rope holding device releasably holding the compensating rope on the side of the compensating rope reel relative to the pulley. The method for extending the compensating rope of the construction elevator is characterized by comprising: a second rope holding device that releasably holds the compensating rope relative to the pulley on the side of the lifting body; and a second rope holding device that releasably holds the compensating rope relative to the pulley on the side of the lifting body. The process of holding the compensating rope with the second rope holding device; The process of releasing the grip of the first rope holding device on the compensating rope, causing the pulley to rise to a predetermined height along the lifting direction of the lifting body, and drawing the compensating rope out from the compensating rope reel; The process of raising the pulley to a predetermined height, gripping the compensating rope with the first rope gripping device, and releasing the grip of the compensating rope by the second rope gripping device; and The process of raising the machine room unit equipped with the second rope gripping device to a specified height.

Images