Fixed-rope gripping device for an elevator and method for replacing the main rope

Abstract

The present application provides a fixed rod holding device of an elevator and a main rope replacement method. The fixed rod holding device (90) holds a fixed rod (10) between a support nut (15) and a coil spring (13) when the fixed rod (10) is detached or installed with respect to a rod support body (40). The fixed rod holding device (90) has a holding portion (94) including a first block (91) and a second block (92) connected by a connecting member (93) so as to be openable and closable in a horizontal direction. In a closed state of the holding portion (94), a through hole (95) through which the fixed rod (10) can pass is provided at an engaging surface of the first block (91) and the second block (92). A locking portion (96) is formed in the through hole (95) and engages with an external thread portion (16) provided on an outer periphery of the fixed rod (10) to prevent axial movement of the fixed rod (10). A closing portion (97) that closes the first block (91) and the second block (92) is provided on a side of the holding portion (94) opposite to the connecting member (93).

Description

Technical Field

[0001] This invention relates to a fixed rod holding device for elevators and a method for replacing the main rope. Background Technology

[0002] During the replacement of the main rope of a 2:1 rope ratio elevator, workers need to remove the existing main rope end from the floor of the machine room and the beam above the shaft where the rope end is fixed, or fix the newly installed main rope end (see Patent Document 1). The main rope end is connected to a fixed rod with an external thread. The fixed rod is supported by a support nut screwed into the external thread via a helical spring and is called a rod support. When installing or removing the main rope end, the worker needs to hold the fixed rod by hand while tightening or loosening the support nut to prevent the fixed rod from falling.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-037624 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] Elevator main ropes are usually provided in multiple strands, and each strand weighs more than 1 kg per meter. As mentioned above, the existence of manual operation procedures that rely on operators during rope replacement reduces work efficiency.

[0008] Methods for solving problems

[0009] The fixed rod holding device of the present invention is characterized in that the fixed rod connected to the end of the main rope of the elevator is supported in the elevator by a support nut and a helical spring in a rod support body provided in the shaft. When the fixed rod is disassembled or installed relative to the rod support body, the fixed rod is held between the support nut and the helical spring. The fixed rod holding device has a holding part, which includes a first block and a second block connected by a connecting member to be openable and closed in the horizontal direction. In the closed state of the holding part, a through hole through which the fixed rod can pass is provided on the mating surface of the first block and the second block. A locking part is formed in the through hole, which engages with an external threaded part provided on the outer periphery of the fixed rod to prevent axial movement of the fixed rod. A closing part is provided on the side of the holding part opposite to the connecting member side to close the first block and the second block.

[0010] The main rope replacement method of the present invention is a method for replacing the main rope of an elevator using the fixed rod holding device of the present invention. It is characterized by the following steps: To remove the existing fixed rod connected to the end of the existing main rope from the rod support body, the existing fixed rod is pulled upwards to separate the helical spring from the support nut, and the fixed rod holding device is installed between the helical spring and the support nut; after removing the support nut from the external thread of the existing fixed rod and connecting one end of the rod guide rope to the upper end of the existing fixed rod using a rod guide rope wire, the fixed rod holding device is removed from the existing fixed rod, and while extending the rod guide rope, the existing fixed rod is pulled out from the rod support body. For the fixed pole, the existing main rope is removed from the pole support. To install the new fixed pole, which is connected to the end of the new main rope, onto the pole support, after connecting one end of the pole guide rope to the upper end of the new fixed pole via a pole guide rope thread, the pole guide rope is pulled up to the upper side of the pole support. The fixed pole holding device is then assembled onto the new fixed pole via a helical spring. The pole guide rope and pole guide rope thread are removed from the upper end of the new fixed pole, and a support nut is assembled onto the external thread of the new fixed pole. Finally, the fixed pole holding device is removed from the new fixed pole, allowing the new fixed pole to be supported by the helical spring on the pole support, and the new main rope is installed onto the pole support.

[0011] Invention Effects

[0012] According to the present invention, by using a holding device to hold the fixed rod, the operator can perform operations such as tightening or loosening the support nut with both hands, thus simplifying the installation and removal of the fixed rod relative to the rod support. Furthermore, the main rope replacement method according to the present invention shortens the steps that rely on manual operation by the operator, thus enabling more efficient main rope replacement operations than before. Attached Figure Description

[0013] Figure 1 This is a diagram showing the outline structure of a mechanism used to illustrate a 2:1 rope ratio elevator.

[0014] Figure 2 This is an enlarged view of the rope fastener.

[0015] Figure 3 This is an enlarged view showing the rope fasteners in the position of the worker holding the fixed pole.

[0016] Figure 4 This is a perspective view of a fixed rod holding device as an example of an embodiment, viewed from the closed side.

[0017] Figure 5 This is a perspective view of a fixed rod holding device as an example of an embodiment, viewed from the connecting part side.

[0018] Figure 6This is a diagram of a fixed rod holding device as an example of an implementation, viewed from above.

[0019] Figure 7 This is an overall perspective view showing the open state of the fixed rod holding device as an example of an embodiment.

[0020] Figure 8 This is an enlarged view showing the rope fastener in use as an example of a fixed rod holding device according to an embodiment.

[0021] Figure 9 This is an enlarged view showing the rope fastener in use as an example of a fixed rod holding device according to an embodiment.

[0022] Figure 10 This is an enlarged view showing the rope fastener in use as an example of a fixed rod holding device according to an embodiment.

[0023] Figure 11 This is a flowchart illustrating the method for replacing the main rope of an elevator with a 2:1 rope ratio.

[0024] Figure 12 This is a diagram illustrating the outline structure of a method for replacing the main rope of an elevator with a 2:1 rope ratio.

[0025] Figure 13 This is a diagram illustrating the outline structure for disassembling an existing fixed rod in a method for replacing the main rope of a fixed rod holding device used as an example of an embodiment.

[0026] Figure 14 This is a diagram illustrating the outline structure for disassembling an existing fixed rod in a method for replacing the main rope of a fixed rod holding device used as an example of an embodiment.

[0027] Figure 15 This is a diagram illustrating the outline structure of a method for changing the main rope using a fixed rod holding device as an example of an implementation, used to explain the state during operation.

[0028] Figure 16 This is a diagram illustrating the outline structure for installing a new fixed rod in a method for replacing the main rope of a fixed rod holding device used as an example of an implementation.

[0029] Figure 17 This is a diagram illustrating the general structure of a method for replacing the main rope of a fixed rod holding device, which is used as an example of an implementation, to explain the installation of a new fixed rod and the state of completion of the operation. Detailed Implementation

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, the embodiments described below are merely examples, and the present invention is not limited to these embodiments. Figure 1 This is a diagram showing the outline structure of a mechanism used to illustrate a 2:1 rope ratio elevator. Figure 2 This is an enlarged view of the rope fastener.

[0031] like Figure 1 As shown, in a 2:1 rope ratio elevator, within the hoistway 1, the car 2 and counterweight 3, connected to the main rope 7, are raised and lowered in a bucket manner, thereby enabling passengers (not shown) to move to each floor between the uppermost floor 22 and the lowermost floor 23. The main rope 7 is wound around the car pulley 21 located on the upper part of the car 2, the counterweight pulley 31 located on the upper part of the counterweight 3 which is linked to the car 2, the sheave 51 of the traction machine 5 located in the machine room 4 above the hoistway 1, and the deflector sheave 6.

[0032] Fixed rods 10 are connected to both ends of the main rope 7 via rope sleeves 8. The fixed rods 10 pass through openings 41 in the rod support body 40 and are supported by the rope fixing mechanism 9. The rod support body 40 is located within the hoistway 1, and in elevators with a machine room 4 located above the hoistway 1, it serves as the floor of the machine room 4. In elevators without a machine room 4, the beam located above the hoistway 1 functions as the rod support body 40.

[0033] like Figure 2 As shown, the rope fixing member 9 refers to the following mechanism: a fixing rod 10 connected to the end of the main rope 7 via the rope sleeve 8 passes through the opening 41 provided in the rod support body 40, and is supported by the support nut 15 on the upper side of the rod support body 40 by the helical spring 13, etc., which will be described later.

[0034] The rope sleeve 8 is a generally cylindrical clamp with openings at the top and bottom. Near the upper opening, a pin hole 17 is provided horizontally as a through hole for the insertion of a rod pin 11 (described later). The rope sleeve 8 may also narrow towards the lower opening of the main rope 7. The main rope 7 is inserted through the opening on the main rope 7 side, folded back within the rope sleeve 8, and secured to the rope sleeve 8 by a known end-treatment method. A fixing rod 10, inserted into the upper opening, is engaged by a rod pin 11 and connected to the end of the main rope 7 via the rope sleeve 8. The rod pin 11 is inserted into a cotter pin hole (not shown) at the lower end of the fixing rod 10 and the pin hole 17 of the rope sleeve 8.

[0035] The fixing rod 10 is a rod-shaped component with an external thread 16 at its upper end, which is fixed to the end of the rope sleeve 8 by the rod pin 11. The fixing rod 10, connected to the end of the main rope 7, passes through the opening 41 of the rod support 40 and protrudes upwards from the rod support 40 via the spring receiving member 12 on the rod support side, the helical spring 13, and the spring receiving member 14 on the support nut side. The fixing rod 10 is then supported on the rod support 40 by fitting a support nut 15 to the external thread 16. The support nut 15 may be, for example, a double nut that combines a type 3 nut and a type 1 nut.

[0036] The helical spring 13 functions to elastically support the fixing rod 10 on the rod support body 40. Specifically, by loosening or tightening the support nut 15 fitted to the external thread portion 16 of the fixing rod 10, the helical spring 13 elastically deforms, thereby adjusting the tension of the main rope 7. The inner diameter of the helical spring 13 is set to allow the fixing rod 10 to pass through and to allow it to be inserted into the rod support body 40. Figure 3 The dimensions of the insertion of the rod guide rope 77 and the rod guide rope 78 are described later.

[0037] Next, use Figure 3 The steps for installing and removing the previous fixing rod 10 are explained. Figure 3 This is an enlarged view showing the rope fasteners in the position of the worker holding the fixed pole.

[0038] like Figure 3 As shown, during the replacement of the main rope 7, in order to remove the existing fixed rod 10 from the rod support body 40, the operator 80 holds the fixed rod 10 with one hand while removing the support nut 15 (see reference). Figure 2 Remove the rod from the external thread 16 of the fixed rod 10. Then, hold the fixed rod 10 with one hand until the rod guide rope thread 77 is inserted into the cotter pin hole 18 provided at the upper end of the fixed rod 10, and connect one end of the rod guide rope 78 to the upper end of the fixed rod 10 through the rod guide rope thread 77. Then, while pushing the rod guide rope 78 out through the inner diameter of the helical spring 13, pull the fixed rod 10 out of the rod support 40 through the opening 41, thereby removing the existing main rope 7 from the rod support 40.

[0039] On the other hand, during the replacement of the main rope 7, in order to install the newly installed fixed rod 10 onto the rod support 40, one end of the rod guide rope 78 must be pre-connected to the upper end of the fixed rod 10 via the rod guide rope wire 77 on the lower side of the rod support 40. Next, the operator 80 pulls the rod guide rope 78 up to the upper side of the rod support 40 through the opening 41, causing the fixed rod 10 to sequentially pass through the spring receiving component 12 on the rod support side, the helical spring 13, and the spring receiving component 14 on the support nut side, protruding upwards from the rod support 40. The operator 80 needs to hold the fixed rod 10 with one hand until the rod guide rope 78 and the rod guide rope wire 77 are removed from the upper end of the fixed rod 10, and the support nut 15 is installed on the external thread 16 of the fixed rod 10 (see reference). Figure 2 Until then. Using the support nut 15, the fixed rod 10 is supported on the rod support body 40 by the helical spring 13, thereby installing the newly installed main rope 7 on the rod support body 40.

[0040] use Figures 4-7 The details of the fixed rod holding device 90 are explained. Figure 4 This is a perspective view of a fixed rod holding device as an example of an embodiment, viewed from the closed side. Figure 5 This is a perspective view of a fixed rod holding device as an example of an embodiment, viewed from the connecting part side. Figure 6 This is a diagram of a fixed rod holding device as an example of an implementation, viewed from above. Figure 7 This is an overall perspective view showing the open state of the fixed rod holding device as an example of an embodiment.

[0041] like Figure 4 As shown, the fixed rod holding device 90 includes a holding portion 94, which comprises a first block 91 and a second block 92. The first block 91 and the second block 92 are connected by a connecting member 93 to be able to open and close in the horizontal direction. The connecting member 93 is, for example, a hinge.

[0042] The elevator's main rope 7 is usually composed of multiple main ropes 7 connected by rope fasteners 9 (see reference). Figure 2 ) are respectively fixed to the rod support body 40 (refer to Figure 2 Therefore, to avoid interference with the nearby rope fixing member 9, it is preferable that the horizontal dimension of the retaining part 94 of the fixing rod holding device 90 in the closed state is larger than that of the spring receiving member 14 on the support nut side (see reference). Figure 2Small. Furthermore, the spring receiving member 14 on the support nut side is, for example, a circular plate, and preferably its outer diameter is larger than the outer shape of the lower end face of the retaining portion 94 in the closed state. This increases the contact area between the lower end face of the retaining portion 94 and the upper surface of the spring receiving member 14 on the support nut side, thus reducing the surface pressure applied from the retaining portion 94 to the spring receiving member 14 on the support nut side. Therefore, the spring receiving member 14 on the support nut side can suppress its own deformation and stably hold the retaining portion 94.

[0043] like Figure 5 As shown, when the connecting part 93 is a hinge, the blade plate 100 and blade plate 101, which are rotatably connected by the hinge shaft 112, are fixed to the first piece 91 and the second piece 92 by screws 113, respectively, and the holding part 94 can be opened and closed in the horizontal direction.

[0044] When the retaining part 94 is closed, a through hole 95 is provided on the mating surface of the first block 91 and the second block 92, through which the fixing rod 10 can pass.

[0045] A locking portion 96 is formed in the through hole 95, and the locking portion 96 is connected to the external thread portion 16 provided on the outer periphery of the fixing rod 10 (see reference). Figure 2 The locking part 96 is an internally threaded part provided on the inner circumference of the through hole 95, which prevents the axial movement of the fixing rod 10. In this embodiment, the locking part 96 is an internally threaded part provided on the inner circumference of the through hole 95.

[0046] As will be described later, even in support nut 15 (refer to...) Figure 2 Even after the support nut 15 is removed from the fixing rod 10, the fixing rod holding device 90 still needs to support the fixing rod 10 with a force equal to or greater than that of the support nut 15. Therefore, it is preferable that the height of the retaining part 94 in the closed state is equal to or greater than that of the support nut 15, and that each block 91, 92 is made of the same type of metal as the support nut 15, such as iron. With this structure, the retaining part 94 and the fixing rod 10 can ensure an engagement length of at least the engagement length between the support nut 15 and the fixing rod 10, and the fixing rod holding device 90 can support the fixing rod 10 with a supporting force equal to or greater than that of the support nut 15.

[0047] like Figure 6 As shown, a closing part 97 is provided on the side of the holding part 94 opposite to the side of the connecting member 93 to close the first block 91 and the second block 92.

[0048] like Figure 7As shown, the closing part 97 includes: a rod 102 rotatably mounted on the first block 91; a hook 103 rotatably mounted on the rod 102; and a receiving member 104 fixed to the second block 92. By rotating the rod 102, the hook 103 hooked to the receiving member 104 is pulled, thereby using the tension of the hook 103 to close the first block 91 and the second block 92.

[0049] The closing part 97 also includes a locking part 98. The locking part 98 is, for example, a cylindrical pin, which serves to maintain the closed state of the retaining part 94. Specifically, the locking part 98 is inserted into a through hole formed by the first locking hole 106 and the second locking hole 107 overlapping in the closed state of the retaining part 94, thereby preventing the rotation of the rod 102 and maintaining the closed state of the retaining part 94. The first locking hole 106 is provided on the fixing base plate 105, which is fixed to the first block 91 and is used to rotatably mount the rod 102 to the first block 91. The second locking hole 107 is provided on the rod 102.

[0050] use Figures 8-10 The usage status of the fixed rod holding device 90 is explained. Figures 8-10 This is an enlarged view showing the rope fastener in use as an example of a fixed rod holding device according to an embodiment.

[0051] like Figure 8 As shown, during the replacement of the main rope 7, when the existing fixed rod 10 needs to be removed from the rod support body 40, the fixed rod 10 is pulled up to separate the helical spring 13 from the support nut 15, and the fixed rod holding device 90 is installed between the spring receiving part 14 on the support nut side, which is placed on the helical spring 13, and the support nut 15.

[0052] Next, as Figure 9 As shown, the support nut 15 is removed from the external threaded portion 16 of the existing fixing rod 10 (see reference). Figure 8 When the fixing rod holding device 90, which is assembled to the existing fixing rod 10, is in the closed state, the locking part 96 of the fixing rod holding device 90 engages with the external threaded part 16 of the existing fixing rod 10, thus preventing axial movement of the existing fixing rod 10 even after the support nut 15 is removed. By using the fixing rod holding device 90, the previous process of having an operator hold the fixing rod 10 with one hand to prevent axial movement of the existing fixing rod 10 after the support nut 15 was removed is eliminated.

[0053] Next, as Figure 10As shown, one end of the rod guide rope 78 is connected by a rod guide rope wire 77 inserted into a cotter pin hole 18 provided at the upper end of the existing fixed rod 10. Then, the fixed rod holding device 90 is removed from the fixed rod 10, and while the rod guide rope 78 is being extended, the existing fixed rod 10 is pulled out from the rod support body 40 through the opening 41, thereby allowing the existing main rope 7 to be removed from the rod support body 40.

[0054] On the other hand, during the replacement of the main rope 7, when installing the newly installed fixed rod 10 onto the rod support 40, firstly, one end of the rod guide rope 78 is connected to the upper end of the fixed rod 10 via the rod guide rope wire 77 on the lower side of the rod support 40. Then, the rod guide rope 78 is pulled up to the upper side of the rod support 40 through the opening 41, so that the newly installed fixed rod 10 passes sequentially through the spring receiving component 12 on the rod support side, the helical spring 13, and the spring receiving component 14 on the support nut side, protruding upwards from the rod support 40. The operator then assembles the fixed rod holding device 90 onto the external thread 16 of the fixed rod 10.

[0055] When the fixing rod holding device 90, which is mounted on the newly installed fixing rod 10, is in the closed state, the locking part 96 of the fixing rod holding device 90 engages with the external threaded part 16 of the existing fixing rod 10, thus preventing axial movement of the newly installed fixing rod 10 even when the operator is not holding it. By using the fixing rod holding device 90, the previous process of having the operator hold the fixing rod 10 with one hand to prevent axial movement of the newly installed fixing rod 10 after pulling the newly installed fixing rod 10 up to the upper side of the rod support body 40 through the opening 41 is eliminated.

[0056] Next, remove the rod guide rope 78 and rod guide rope thread 77 from the upper end of the fixed rod 10, and install the support nut 15 on the external threaded portion 16 of the fixed rod 10. Remove the fixed rod holding device 90 from the fixed rod 10, and support the fixed rod 10 on the rod support body 40 by the helical spring 13, thereby enabling the newly installed main rope 7 to be installed on the rod support body 40.

[0057] use Figures 11-17 The method for replacing the main rope of an elevator with a 2:1 rope ratio that uses a fixed rod holding device 90 is explained. Figure 11 This is a flowchart illustrating the method for replacing the main rope of an elevator with a 2:1 rope ratio. Figure 12 This is a diagram illustrating the outline structure of a method for replacing the main rope of an elevator with a 2:1 rope ratio. Figure 13 and Figure 14 This is a diagram illustrating the outline structure for disassembling an existing fixed rod in a method for replacing the main rope of a fixed rod holding device used as an example of an embodiment.

[0058] Figure 15 This is a diagram illustrating the outline structure of a method for changing the main rope using a fixed rod holding device as an example of an implementation, used to explain the state during operation. Figure 16 This is a diagram illustrating the outline structure for installing a new fixed rod in a method for replacing the main rope of a fixed rod holding device used as an example of an implementation. Figure 17 This is a diagram illustrating the general structure of a method for replacing the main rope of a fixed rod holding device, which is used as an example of an implementation, to explain the installation of a new fixed rod and the state of completion of the operation.

[0059] like Figure 11 As shown, when replacing the main rope of an elevator with a 2:1 rope ratio, firstly, the car 2 and counterweight 3 are fixed inside the hoistway 1. Figure 11 S1). Specifically, such as Figure 12 As shown, a counterweight fixing clamp 32 is installed at the bottom of the hoistway 1 to fix the counterweight 3. Scaffolding 33 is installed near the fixed counterweight 3. At the position where the uppermost landing 22 and the upper surface of the car 2 are on the same plane, the car 2 is fixed in the hoistway 1 using fixing clamps (not shown) such as slings, ropes, and chain pulleys.

[0060] As preparation for other equipment, a winch 42 is installed in machine room 4.

[0061] Regarding the operators, an operator 25 is arranged above the car 2, a machine room operator 26 is arranged in the machine room 4, a bottom-level operator 27 is arranged at the lowest station 23, and a top-level operator 28 is arranged at the highest station 22, but not limited to these. Preferably, a fence 24 is provided above the car 2.

[0062] The existing main rope 71 is indicated by a dashed line. The existing main rope 71 is wound around pulleys inside the machine room 4 and the shaft 1 through the opening 41 of the pole support 40. The existing main rope 71 is retrieved after being cut at cutting points 73, 74, 75, and 76. The existing main ropes 71 cut at each cutting point are designated as existing main ropes 71-1 to 71-5, respectively, and the fixing rods 10 connected to the ends of existing main ropes 71-3 and 71-4 are designated as existing fixing rods 61 and 62, respectively.

[0063] The newly installed main rope 72 is set at the uppermost station 22. The uppermost existing main rope winding drum 82 and the lowermost existing main rope winding drum 83 are set at the uppermost station 22 and the lowermost station 23 to retrieve the existing main rope 71, thus completing the preparation for replacing the main rope.

[0064] Next, the existing main rope 71, which is installed in the middle of the counterweight 3 side of shaft 1, will be retrieved. Figure 11S2). Specifically, such as Figure 12 As shown, the existing main ropes 71-1, which are cut at cutting points 73 and 74, and 71-2, which are cut at cutting points 73 and 75, are connected to the winch rope 44 connected to the winch 42 via a hook and other connecting clamp (not shown). They are lowered to the vicinity of the lowest level station 23, where the lowest level worker 27 winds them up and retrieves them to the lowest level winch drum 83 using the existing main rope.

[0065] Next, the existing fixed rod 61 and the existing fixed rod 62 are removed from the rod support body 40 using the fixed rod holding device 90. Figure 11 S3). Specifically, such as Figure 13 As shown, a fixing rod holding device 90 is mounted on the existing fixing rod 61, and the support nut 15 (see reference) is used. Figure 8 After being removed, one end of the rod guide rope 78 is connected to the upper end of the existing fixed rod 61 by the rod guide rope 77.

[0066] Then, the fixed rod holding device 90 is removed from the existing fixed rod 61. While sending out the rod guide rope 78, the existing fixed rod 61 is pulled out from the rod support body 40 through the opening 41, and the existing main rope 71-3 is removed from the rod support body 40. The uppermost worker 28 winds up the existing main rope 71-3, which was sent out by the worker 25 on the car to the uppermost station 22, and retrieves it to the uppermost existing main rope winding drum 82.

[0067] Next, as Figure 14 As shown, worker 25 on the car cuts the existing main rope 71 at cutting point 76. Worker 26 in the machine room then cuts the existing fixed rod 61 (see reference). Figure 13 Using the same method, mount the fixing rod holding device 90 onto the existing fixing rod 62 and attach the support nut 15 (see reference). Figure 8 After being removed, one end of the rod guide rope 78 is connected to the upper end of the existing fixed rod 61 by the rod guide rope 77.

[0068] Then, the fixed rod holding device 90 is removed from the existing fixed rod 62. While sending out the rod guide rope 78, the existing fixed rod 62 is pulled out from the rod support body 40 through the opening 41, and the existing main rope 71-4 is removed from the rod support body 40. At the uppermost station 22, the uppermost worker 28 winds up the existing main rope 71-4 and retrieves it to the uppermost existing main rope winding drum 82.

[0069] Workers 25 on the car connect the cut end 76 of the existing main rope 71-5 to the end of the newly installed main rope 72 using a connecting clamp 79 (see reference). Figure 11 S4, Figure 15 ).

[0070] Next, the newly installed main rope 72 will be wound around, and the existing main rope 71-5 in the middle of the two sides of the car will be retrieved. Figure 11 S5). For example... Figure 15 As shown, while the worker 28 at the top level station 22 is winding the existing main rope 71-5 onto the top-level existing main rope winding drum 82, the machine room worker 26 is simultaneously winding the newly installed main rope 72, which is connected to the existing main rope 71-5 and sent out into the machine room 4, onto the rope pulley 51 and the guide pulley 6, and lowering it through the opening 41 onto the car 2. The worker 25 on the car removes the connecting clamp 79 to separate the existing main rope 71-5 from the newly installed main rope 72. Then, the worker 28 at the top level station 22 winds the existing main rope 71-5 onto the top-level existing main rope winding drum 82, completing the retrieval of the existing main rope 71.

[0071] Then, in Figure 16 In the middle, the worker 25 on the car sends the end of the newly installed main rope 72 to the vicinity of the counterweight 3. The worker 27 on the lowest level makes the newly installed main rope 72 pass through the counterweight pulley 31, completing the hanging of the newly installed main rope 72.

[0072] Next, using the fixed rod holding device 90, the newly installed fixed rod 63, which is connected to the end of the newly installed main rope 72, and in... Figure 17 The newly installed fixing rod 64, described later, is installed on the rod support body 40. Figure 11 S6). The lowest-level worker 27 connects the rope sleeve 8 to the end of the newly installed main rope 72, and connects the newly installed fixed rod 63 to the opposite opening of the rope sleeve 8. The machine room worker 26 sends the winch rope 44 connected to the winch 42 to the vicinity of the counterweight 3. The lowest-level worker 27 connects the winch rope 44 to the newly installed fixed rod 63 using a hook and other connecting clamp (not shown). The machine room worker 26 uses the winch 42 to wind up the winch rope 44 and pulls the newly installed fixed rod 63 up to the vicinity of the rod support 40.

[0073] The worker 25 on the car connects one end of the pole guide rope 78 to the upper end of the newly installed fixed pole 63 using the pole guide rope 77.

[0074] like Figure 16 As shown, the machine room operator 26 pulls the pole guide rope 78 upward through the opening 41, causing the newly installed fixed pole 63 to protrude above the pole support body 40. A fixed pole holding device 90 is then installed on the newly installed fixed pole 63, and the pole guide rope 78 and the pole guide rope cable 77 are removed from the upper end of the newly installed fixed pole 63. A support nut 15 is then installed above the fixed pole holding device 90 (see reference). Figure 8After that, remove the fixed rod holding device 90, thereby allowing the newly installed fixed rod 63 to be supported on the rod support body 40, and install the newly installed main rope 72 on the rod support body 40.

[0075] like Figure 17 As shown, the worker 25 on the car connects the rope sleeve 8 to the car 2 side end of the newly installed main rope 72, and connects the newly installed fixed rod 64 to the opening on the opposite side of the rope sleeve 8. One end of the rod guide rope 78 is connected to the upper end of the newly installed fixed rod 64 via the rod guide rope wire 77. The machine room worker 26 pulls the rod guide rope 78 upwards through the opening 41, causing the newly installed fixed rod 64 to protrude upwards towards the rod support body 40. A fixed rod holding device 90 is installed on the newly installed fixed rod 64, and the rod guide rope 78 and the rod guide rope wire 77 are removed from the upper end of the newly installed fixed rod 64. A support nut 15 is installed above the fixed rod holding device 90 (see reference). Figure 8 After that, remove the fixed rod holding device 90, thereby allowing the newly installed fixed rod 64 to be supported on the rod support body 40, and install the newly installed main rope 72 on the rod support body 40.

[0076] After supporting both ends of the newly installed main rope 72 on the pole support body 40, the winch 42 and other devices are retrieved. The counterweight fixing clamp 32, scaffolding 33, and the fixing clamp of the car 2 (not shown) are retrieved, and the fixing of the car 2 and counterweight 3 is released. Thus, the retrieval of the existing main rope 71 (see reference) is completed. Figure 12 And a series of operations to replace it with the newly installed main rope 72. Figure 11 S7).

[0077] As described above, the method of using the fixed rod holding device 90 to retrieve the existing main rope 71 and replace it with a newly installed main rope 72 specifically includes the following steps.

[0078] (1) Pull up the existing fixed rods 61 and 62 to separate the helical spring 13 from the support nut 15, and install the fixed rod holding device 90 between the helical spring 13 and the support nut 15;

[0079] (2) After removing the support nut 15 from the external thread 16 of the existing fixed rods 61 and 62, and connecting one end of the rod guide rope 78 to the upper end of the existing fixed rods 61 and 62 through the rod guide rope wire 77, remove the fixed rod holding device 90 from the existing fixed rods 61 and 62, and pull out the existing fixed rods 61 and 62 from the rod support body 40 while sending out the rod guide rope 78, and remove the existing main rope 71 from the rod support body 40;

[0080] (3) After connecting one end of the rod guide rope 78 to the upper end of the newly installed fixed rods 63 and 64 by the rod guide rope 77, pull the rod guide rope 78 up to the upper side of the rod support body 40, and assemble the fixed rod holding device 90 to the newly installed fixed rods 63 and 64 by the helical spring 13.

[0081] (4) Remove the rod guide rope 78 and rod guide rope wire 77 from the upper end of the newly installed fixed rods 63 and 64, and install the support nut 15 on the external threaded part 16 of the newly installed fixed rods 63 and 64;

[0082] (5) Remove the fixing rod holding device 90 from the newly installed fixing rods 63 and 64, so that the newly installed fixing rods 63 and 64 are supported on the rod support body 40 by the helical spring 13, and install the newly installed main rope 72 on the rod support body 40.

[0083] By using the fixed rod holding device 90 with the above-described structure, the axial movement of the fixed rod 10 is prevented. Therefore, during the main rope replacement operation of the elevator, the operator does not need to use one hand to hold the fixed rod 10 while using the other hand to tighten or loosen the support nut 15. After holding the fixed rod 10 with the fixed rod holding device 90, the operator can use both hands to tighten or loosen the support nut 15 and install or remove the rod guide rope 78, thus making the main rope replacement easier.

[0084] Furthermore, the above embodiments can be appropriately modified without compromising the purpose of the present invention. For example, the external thread portion 16 of the fixing rod 10 may be provided throughout both ends or the entire range of the fixing rod 10, so that the fixing rod 10 can be used even if the difference between the upper and lower ends is not noticed.

[0085] Label Explanation

[0086] 1: Hoistway; 2: Car; 3: Counterweight; 4: Machine room; 5: Traction machine; 6: Guide pulley; 7: Main rope; 8: Rope sleeve; 9: Rope fastener; 10: Fixing rod; 11: Rod pin; 12: Spring receiving component on the side of the rod support; 13: Helical spring; 14: Spring receiving component on the side of the support nut; 15: Support nut; 16: External thread; 21: Car pulley; 22: Top floor; 23: Bottom floor; 25: Workers on the car; 26: Workers in the machine room; 27: Bottom floor workers; 28: Top floor workers; 31: Counterweight pulley; 32: Counterweight fixing clamp; 33: Scaffolding ; 40: Rod support body; 41: Opening part; 42: Electric winch; 51: Rope pulley; 61, 62: Existing fixed rod; 63, 64: Newly installed fixed rod; 71: Existing main rope; 72: Newly installed main rope; 73-76: Cutting part; 77: Rod guide rope wire; 78: Rod guide rope; 81: Rope fixing clamp; 82: Uppermost winding drum using existing main rope; 83: Lowermost winding drum using existing main rope; 90: Fixed rod holding device; 91: First piece; 92: Second piece; 93: Connecting part; 94: Holding part; 95: Through hole; 96: Locking part; 97: Closing part; 98: Locking part.

Claims

1. A fixed rod holding device, wherein a fixed rod connected to the end of the main rope of an elevator is supported in an elevator by a support nut and a helical spring in a rod support body installed in the shaft, wherein, during the disassembly or installation of the fixed rod relative to the rod support body, the fixed rod holding device holds the fixed rod between the support nut and the helical spring, wherein... The fixed rod holding device includes a retaining part, which comprises a first block and a second block connected by a connecting member to be openable and closable in the horizontal direction. When the retaining part is in the closed state, a through hole is provided on the mating surface of the first block and the second block, through which the fixing rod can pass. A locking portion is formed in the through hole, which engages with an external threaded portion provided on the outer periphery of the fixing rod to prevent axial movement of the fixing rod. A closing portion is provided on the side of the retaining portion opposite to the connecting member side to close the first block and the second block.

2. The fixed rod holding device according to claim 1, characterized in that, The closing part includes: a rod rotatably mounted to the first block; a hook rotatably mounted to the rod; and a receiving member fixed to the second block. The hook attached to the receiving component is pulled by rotating the rod, and the tension of the hook is used to close the first and second blocks.

3. The fixing rod holding device according to claim 2, characterized in that, The closing part also includes a locking part, which maintains the closed state of the retaining part. The locking part is inserted into the first locking hole and the second locking hole when the retaining part is closed, so as to prevent the rod from rotating. The first locking hole is provided on the fixing base plate, and the fixing base plate is fixed to the first block for mounting the rod on the first block in a rotatable manner. The second locking hole is provided on the rod.

4. The fixing rod holding device according to claim 1, characterized in that, The locking part is an internally threaded part located on the inner periphery of the through hole, which engages with the externally threaded part located on the outer periphery of the fixing rod.

5. A method for replacing the main rope of an elevator, comprising replacing the main rope of the elevator using the fixed rod holding device as described in claim 1, wherein... The process includes the following steps: In order to remove the existing fixed pole, which is connected to the end of the existing main rope, from the pole support, Pull the existing fixed rod upward to separate the helical spring from the support nut, and assemble the fixed rod holding device between the helical spring and the support nut; After removing the support nut from the external thread of the existing fixed rod and connecting one end of the rod guide rope to the upper end of the existing fixed rod with the rod guide rope wire, remove the fixed rod holding device from the existing fixed rod, while sending out the rod guide rope, pull the existing fixed rod out from the rod support body, and remove the existing main rope from the rod support body; In order to install the newly installed fixed pole, which is connected to the end of the newly installed main rope, onto the pole support, After connecting one end of the rod guide rope to the upper end of the newly installed fixed rod with a wire, the rod guide rope is pulled up to the upper side of the rod support, and the fixed rod holding device is assembled to the newly installed fixed rod through the helical spring; Remove the rod guide rope and the rod guide rope wire from the upper end of the newly installed fixed rod, and assemble the support nut on the external threaded part of the newly installed fixed rod; as well as Remove the fixing rod holding device from the newly installed fixing rod, so that the newly installed fixing rod is supported by the rod support body by the helical spring, and install the newly installed main rope on the rod support body.

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