Elevator equipment lifting device

Abstract

To provide a lifting device for elevator equipment that can easily lift a heavy object such as a hoist to a machine room through a simple work process during elevator renewal work. [Solution] A lifting device for elevator equipment that lifts an existing hoist installed at the bottom of the elevator shaft 1 or a hoist to be newly installed in the elevator shaft 1 within the elevator shaft 1, is characterized in that it comprises a chain block 611 that lifts the hoist and a fixing device that fixes the chain block 62, 611 between guide rails 5a, 5b that are installed opposite each other within the elevator shaft 1, and the chain block 62, 611 lifts the elevator equipment or fixing device between the lowest floor and the bottom.

Description

[Technical Field]

[0001] The present invention relates to a lifting device that lifts elevator equipment such as a hoist between a predetermined floor and the bottom of a hoistway during elevator renovation work. [Background technology]

[0002] When renovating existing elevator equipment that has deteriorated over time, workers manually transport relatively lightweight elevator equipment to the machine room using stairs, etc. Heavy items, such as hoists, cannot be transported manually, so they are lifted using a crane or a lifting device is assembled and used to lift them to the machine room. However, these lifting methods have many limitations, such as the inability to secure working space for the crane, or the inability to ensure the lifting space or strength of the stairs.

[0003] A proposed construction method for renovation work involves placing elevator equipment such as a hoist on the floor of a car stopped at the lowest floor, fixing one end of a rope hanging down from an opening in the machine room floor into the elevator shaft to the elevator equipment, and then driving the rope with a rope drive device installed in the machine room to lift the elevator equipment and raise it into the machine room (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-20482 Summary of the Invention [Problem to be solved by the invention]

[0005] The floor of the car is used as a working floor, and elevator equipment such as a hoist is then placed on it, which is then pulled up with a rope and lifted into the machine room.However, after dismantling the existing car, it is necessary to remove everything except the floor to open the top of the car, which creates the problem that these operations take a lot of time and effort.

[0006] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a lifting device for elevator equipment that can easily lift heavy objects such as hoists to the machine room with simple work processes during elevator renovation work. [Means for solving the problem]

[0007] The lifting device for elevator equipment in this invention is a lifting device for elevator equipment that lifts existing elevator equipment installed at the bottom of a hoistway or elevator equipment to be newly installed in a hoistway within a hoistway during elevator renovation work, and is characterized in that it comprises a chain block that lifts the elevator equipment and a fixing device that fixes the chain block between guide rails installed opposite each other within the hoistway, and the chain block lifts the elevator equipment or the fixing device between a specific floor and the bottom. [Effects of the Invention]

[0008] The present invention makes it possible to realize a lifting device for elevator equipment that can easily lift heavy objects such as hoists to the machine room through simple work processes during elevator renovation work. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing a lifting device (as a whole) of an elevator apparatus according to a first embodiment of the present invention. [Figure 2] 2 is a plan view showing the lifting device (as a whole) of the elevator apparatus of FIG. 1 according to Embodiment 1 of the present invention. FIG. [Figure 3]2 is a perspective view showing a main part of a lifting device of the elevator equipment of FIG. 1 according to embodiment 1 of the present invention. FIG. [Figure 4] 4 is an enlarged view (a perspective view when viewed from below) showing a main part of the lifting device of the elevator equipment of FIG. 3 according to Embodiment 1 of the present invention. FIG. [Figure 5] 4 is an enlarged view (a perspective view as seen from above) showing a main part of the lifting device of the elevator equipment of FIG. 3 according to Embodiment 1 of the present invention. FIG. [Figure 6] 6A and 6B are enlarged views showing a main part of the lifting device of the elevator equipment of FIG. 5 according to the first embodiment of the present invention before use, where (a) is a side view as seen from the left, and (b) is a front view. [Figure 7] 6A and 6B are enlarged views showing a main part of the lifting device of the elevator equipment of FIG. 5 according to the first embodiment of the present invention when in use, where (a) is a side view as seen from the left, and (b) is a front view. [Figure 8] 1 is an overall view (front view) showing an assembly procedure (a) of a lifting device for elevator equipment according to a first embodiment of the present invention. [Figure 9] FIG. 4 is an overall view (front view) showing an assembly procedure (b) of the lifting device of the elevator equipment according to the first embodiment of the present invention. [Figure 10] FIG. 10 is an overall view (front view) showing an assembly procedure (c) of the lifting device of the elevator equipment according to the first embodiment of the present invention. [Figure 11] FIG. 10 is an overall view (front view) showing an assembly procedure (d) of the lifting device of the elevator equipment according to the first embodiment of the present invention. [Figure 12] FIG. 10 is an overall view (front view) showing an assembly procedure (e) of the lifting device of the elevator equipment according to the first embodiment of the present invention.

[0010] Embodiment 1 1 to 12 illustrate a lifting device for elevator equipment according to a first embodiment of the present invention, with FIG. 1 being a perspective view showing the lifting device (as a whole), FIG. 2 being a plan view showing the lifting device (as a whole) of FIG. 1, and FIG. 3 being a perspective view showing a main part of the lifting device of FIG. 1. FIG. 4 is an enlarged view (a perspective view when viewed from below) showing a main part of the lifting device of FIG. 3, and FIG. 5 is an enlarged view (a perspective view when viewed from above) showing a main part of the lifting device of the elevator equipment of FIG. 3. FIG. 6 is an enlarged view showing a main part of the lifting device of FIG. 5 before use, with (a) being a side view when viewed from the left, and (b) being a front view. FIG. 7 is an enlarged view showing a main part of the lifting device of FIG. 5 when in use, with (a) being a side view when viewed from the left, and (b) being a front view. Figure 8 is an overall view (front view) showing assembly procedure (a), Figure 9 is an overall view (front view) showing assembly procedure (b), Figure 10 is an overall view (front view) showing assembly procedure (c), Figure 11 is an overall view (front view) showing assembly procedure (d), and Figure 12 is an overall view (front view) showing assembly procedure (e).

[0011] As shown in Figures 1 to 7, the elevator to be renovated has an existing hoist 3 installed at the bottom 1a of the elevator shaft 1 through which the car 2 rises and falls, and the bottom 1a corresponds to the machine room where the hoist installed in a normal elevator is located.

[0012] During the renewal work, the existing elevator equipment, such as the hoist 3 and control panel, is removed from the bottom 1a, and then a new hoist 4 is installed inside the bottom 1a.

[0013] A fixing device 6 is provided between the guide rails 5a and 5b. The fixing device 6 has a first lifting beam 60, a second lifting beam 61 whose longitudinal middle portion is placed on the first lifting beam 60, a pair of chain blocks 62 that support both ends of the second lifting beam 61, a pair of temporary lifting beam fixing portions 63 and a pair of temporary lifting beam fixing portions 64.

[0014] The temporary lifting weight fixing portion 63 and the temporary lifting weight fixing portion 64 are arranged in contact with the guide rails 5a and 5b near the lowest floor landing 9, respectively.

[0015] The temporary lifting weight beam fixing part 63 and the temporary lifting weight beam fixing part 64 are the same device. The temporary lifting weight beam fixing part 64 is arranged at a predetermined distance above the temporary lifting weight beam fixing part 63 which is installed on the guide rails 5a and 5b near the lowest floor landing 9.

[0016] The temporary lifting beam fixing portion 63 has a main body 630, a mounting surface 631 fixed to one side of the main body 630 and on which the first lifting beam 60 is placed, and a chain block mounting hole 631a fixed to the lower end surface of the mounting surface 631. For example, a chain block 633 is provided in the chain block mounting hole 631a,

[0017] A U-shaped groove 630a is formed on the other side of main body 630, extending in the vertical direction and facing guide rail 5a or 5b. Groove 630a is provided with fixing portion 632, which is arranged close to guide rail 5a or 5b and can grip or release this grip of guide rail 5a or 5b.

[0018] The fixed portion 632 has a fixed rail stopper 632a arranged close to one side of the guide rail 5a or 5b, a movable rail stopper 632b arranged opposite the fixed rail stopper 632a and close enough to abut against the other side of the guide rail 5a or 5b, and a rail stopper guide 632c arranged on the opposite side of the guide rail 5a or 5b from the movable rail stopper 632b and guiding the movable rail stopper 632b in the vertical direction.

[0019] The movable rail stopper 632b is provided with a lifting lever 632d that can move the movable rail stopper 632b up and down along the rail stopper guide 632c so that the movable rail stopper 632b can be brought closer to the guide rail 5a or 5b in abutting direction or moved away from the guide rail 5a or 5b.

[0020] The fixed part 632 is fixed to the guide rail 5a or 5b in a state where the movable rail stopper 632b is sandwiched and wedged between the rail stopper guide 632c and the guide rail 5a or 5b, and the movable rail stopper 632b cannot move upward from that position.

[0021] A chain block mounting hole 641a is provided in the temporary lifting beam fixing portion 64. For example, a chain block 62 is provided in the chain block mounting hole 641a, and the first lifting beam 60 or the second lifting beam 61, which is temporarily placed on the bottom portion 1a, is fixed to the tip of the chain 62a of the chain block 62.

[0022] The first lifting beam 60 is made of H-beam steel, and is placed on the placement surfaces 631 of the pair of temporary lifting beam fixing portions 63, and is arranged horizontally between the guide rails 5a and 5b.

[0023] The second lifting beam 61 is made of H-shaped steel, and is arranged horizontally with its longitudinal middle portion placed on the middle portion of the first lifting beam 60 and both ends supported by chain blocks 62, respectively.

[0024] One end of the chain block 62 is supported by the guide rail 5a or 5b via a temporary lift beam fixing portion 64, and the other end supports the second lift beam 61 horizontally.

[0025] In addition, a chain block mounting hole 610a is provided on the landing 9 side of the second lifting beam 61. For example, a chain block 611 is provided in the chain block mounting hole 610a, and the existing hoisting machine 3 or the new hoisting machine 4 is fixed to the tip of a chain 611a of the chain block 611.

[0026] Next, with reference to Figs. 8 to 12, the operation process of transporting the hoisting machine 4 from the lowest floor landing 9 to the bottom 1a by the fixing device 6 will be described.

[0027] First, in preparation for installing the fixing device 6 in the hoistway 1 , the temporary lifting beam fixing part 63 and the temporary lifting beam fixing part 64 are installed in the hoistway 1 .

[0028] The temporary lift weight beam fixing parts 63 and 64 are placed on the guide rails 5a and 5b from the bottom 1a using a stepladder at a height around the upper end of the lowest floor landing 9. At this time, the temporary lift weight beam fixing parts 64 are placed at positions higher than the height of the temporary lift weight beam fixing parts 63.

[0029] At this time, the temporary lifting beam fixing part 63 is adjusted using the pull-up lever 632d so that the movable rail stopper 632b abuts against the guide rails 5a, 5b. The temporary lifting beam fixing part 64 is also adjusted in the same way as the temporary lifting beam fixing part 63.

[0030] In addition, the chain block 62 is attached to the chain block attachment hole 641a of the temporary lifting beam fixing portion 64.

[0031] Next, the first lifting beam 60, which has been temporarily placed on the bottom 1a, is fixed to the tip of the chain 62a, and the first lifting beam 60 is lifted. At this time, a load pulling downward by the first lifting beam 60 acts on the temporary lifting beam fixing part 64. This load acts on the fixing part 642, and the fixing part 642 is fixed to the guide rails 5a and 5b.

[0032] The chain block 62 lifts the first lift beam 60 up to the top of the temporary lift beam fixing part 63. The first lift beam 60 that has been lifted up to the top of the temporary lift beam fixing part 63 is placed on the upper surface of the ground surface 71 of the temporary lift beam fixing part 63. In this way, the first lift beam 60 is positioned between the guide rails 5a and 5b.

[0033] Next, the second lifting beam 61 temporarily placed on the bottom 1a is fixed to the tip of the chain 62a, and the second lifting beam 61 is lifted.

[0034] The second lifting beam 61 is lifted up to the top of the first lifting beam 60 by the chain block 62. The middle part in the longitudinal direction of the second lifting beam 61 that has been lifted up to the top of the first lifting beam 60 is placed on the middle part of the first lifting beam 60. At this time, both ends of the second lifting beam 61 are not supported by anything.

[0035] Next, both ends of the second lifting beam 61 are connected to the temporary lifting beam fixing parts 64 via chain blocks 62. As a result, the hanging load acting on the second lifting beam 61 is supported by the guide rails 5a and 5b via the chain blocks 62 and the temporary lifting beam fixing parts 64.

[0036] As a result, the first lifting beam 60 is disposed between the guide rails 5a and 5b, and the second lifting beam 61 is disposed on the landing 9 side, so that the assembly of the fixing device 6 is completed.

[0037] Finally, a chain block 611 is attached to the chain block attachment hole 610a of the second lifting beam 61, and the existing hoist 3 or the new hoist 4 is fixed to the tip of the chain 611a of the chain block 611.

[0038] Using the fixing device 6 assembled as described above, an existing hoisting machine 3 etc. can be lifted from the bottom surface 1a to the landing 9 and carried out of the elevator shaft 1, or a newly installed hoisting machine 4 can be lifted from the landing 9 into the elevator shaft 1 and carried into the bottom surface 1a.

[0039] According to the first embodiment as described above, in the elevator renovation work, the lifting device for elevator equipment that lifts the existing hoisting machine 3 or the new hoisting machine 4 installed at the bottom 1a of the elevator shaft 1 within the elevator shaft 1 includes a chain block 611, 633 that lifts the existing hoisting machine 3 or the new hoisting machine 4, and a fixing device 6 that fixes the chain block 62, 611, 633 between the elevator guide rails 5a, 5b. By using the chain block 62, 611, 633 to lift the elevator equipment or the fixing device 6 between the lowest floor and the bottom 1a, the elevator equipment (for example, the hoisting machine 3 or the hoisting machine 4) which is a heavy object can be easily lifted to the machine room (bottom 1a) with a simple work process without dismantling the car 2 or without installing a combination of special scaffolding materials or scaffolding boards within the elevator shaft 1.

[0040] In addition, the fixing device 6 is equipped with temporary lifting beam fixing parts 63, 64 that can freely grip or release the grip of the guide rails 5a, 5b, a first lifting beam 60 that is arranged between the guide rails 5a, 5b via the temporary lifting beam fixing part 63, and a second lifting beam 61 whose longitudinal middle part is placed on the first lifting beam 60 and whose both ends are supported by the guide rails 5a, 5b via the temporary lifting beam fixing parts 64.As a result, the first lifting beam 60 and the second lifting beam 61 can be fixed at any height, so that heavy elevator equipment (e.g., hoist 3 or hoist 4) can be easily lifted to the machine room (bottom 1a) using an appropriate work process depending on the situation on site.

[0041] Furthermore, since the temporary lifting beam fixing sections 63, 64 are respectively provided at different heights between the guide rails 5a, 5b, the first lifting beam 60 and the second lifting beam 61 can be fixed at any height, so that heavy elevator equipment (e.g., hoisting machine 3 or hoisting machine 4) can be easily lifted to the machine room (bottom 1a) using an appropriate work process depending on the site conditions.

[0042] In addition, in a method for lifting elevator equipment in the elevator shaft 1 during elevator renovation work, an existing hoisting machine 3 or a new hoisting machine 4 installed at the bottom of the elevator shaft 1 is provided, which includes chain blocks 611, 633 for lifting the existing hoisting machine 3 or the new hoisting machine 4, and a fixing device 6 for fixing the chain blocks 62, 611, 633 between guide rails 5a, 5b installed opposite each other in the elevator shaft 1, and by using the chain blocks 62, 611, 633 to lift the elevator equipment or fixing device 6 between the lowest floor and the bottom, it is possible to easily lift the heavy elevator equipment (for example, the hoisting machine 3 or the hoisting machine 4) to the machine room (bottom 1a) using a simple work process without dismantling the car 2 or installing a combination of special scaffolding materials or scaffolding boards in the elevator shaft 1.

[0043] In the lifting device of Example 1, the hoisting machine 3 or hoisting machine 4 is lifted between the lowest floor and the bottom 1a, but it does not necessarily have to be on the lowest floor. For example, by fixing the fixing device 6 to a floor above the lowest floor, it is possible to lift between this floor above the lowest floor and the bottom 1a, and it goes without saying that the same action and effect can be achieved.

[0044] Furthermore, although the hoisting machine 3 or hoisting machine 4 is provided at the bottom 1a, the fixing device 6 can be used even when it is provided above the hoistway 1 or inside the hoistway 1. For example, by using the top of the car 2 as a working floor, the fixing device 6 can be provided above the hoistway 1 or inside the hoistway 1, and it goes without saying that the same action and effect can be achieved.

[0045] Furthermore, the second lifting beam 61 is supported on the guide rails 5a, 5b via a temporary lifting beam fixing portion 64, but this does not necessarily have to be the same configuration. For example, by providing a beam capable of supporting a heavy load in the hoistway 1 on the landing 9 side, it is possible to place one side of the second lifting beam 61 on the first lifting beam 60 and the other on this beam, and it goes without saying that this will have the same effect and function. [Explanation of symbols]

[0046] 1 elevator shaft, 1a bottom, 2 car, 3, 4 hoist, 5a, 5b guide rail, 6 fixing device, 60 first lifting beam, 61 second lifting beam, 62, 611, 633 chain block, 63, 64 temporary lifting beam fixing device [Industrial Applicability]

[0047] The present invention relates to a lifting device that lifts elevator equipment such as a hoist between a predetermined floor and the bottom of a hoistway during elevator renovation work.

Claims

1. A lifting device for elevator equipment that lifts existing elevator equipment installed at the bottom of a hoistway or elevator equipment to be newly installed in the hoistway during elevator renovation work, a chain block for lifting the elevator equipment; and a fixing device for fixing the chain block between guide rails provided opposite to each other in the hoistway, Lifting the elevator equipment or the fixed device between the specific floor and the bottom by the chain block; The fixing device includes a temporary lifting beam fixing portion that can freely grip or release the guide rail, and a first lifting beam that is provided between the guide rails via the temporary lifting beam fixing portion; a second lifting beam, the longitudinal middle portion of which is placed on the first lifting beam and each of whose ends is supported by the guide rail via the temporary lifting beam fixing portion.

2. The lifting device for elevator equipment according to claim 1 , wherein the temporary lift beam fixing portions are respectively provided at different heights between the guide rails.

3. A method for lifting an existing elevator device installed at the bottom of a hoistway or an elevator device to be newly installed in the hoistway during renovation work of an elevator, comprising: a chain block for lifting the elevator equipment; and a fixing device for fixing the chain block between guide rails provided opposite to each other in the hoistway, Lifting the elevator equipment or the fixed device between the specific floor and the bottom by the chain block; The fixing device includes a temporary lifting beam fixing portion that can freely grip or release the guide rail, and a first lifting beam that is provided between the guide rails via the temporary lifting beam fixing portion; a second lifting beam, the longitudinal middle portion of which is placed on the first lifting beam and the ends of which are supported by the guide rail via the temporary lifting beam fixing portions.

4. The method for lifting an elevator device according to claim 3, wherein the temporary lift beam fixing portions are respectively provided at different heights between the guide rails.

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