Lifting system and lifting method for elevator track

Abstract

The invention provides a lifting system of an elevator track, which can reduce damage to operators even if a part of a guide rail lifting mechanism falls down. A lifting system (1) for an elevator track, which lifts a track (3b) provided in a hoistway (2) of an elevator, is provided with: a pod (12) which lifts along a pod wire rope (24) vertically disposed in the hoistway (2); and a crane (11) that ascends and descends along a lifting wire rope (23) that is vertically disposed in the lifting path (2), the crane (11) having a suspension structure that suspends the rail (3b).

Description

Technical Field

[0001] The present invention relates to a lifting system and a lifting method for an elevator rail, which can lift the guide rail to a desired height in a hoistway when installing the elevator. Background Art

[0002] As a prior art for installing a guide rail in an elevator hoistway, the elevator installation method of Patent Document 1 is known. For example, in the 19th line of the upper right column on page 3 to the first line of the upper right column on page 4, Figure 2 and Figure 3 A track setting method for connecting guide rails in sequence from the top layer toward the bottom is disclosed.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 3-088684 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In Patent Document 1, a hanging rope is hooked on a lifting beam installed at the uppermost part of the hoistway, and a tension pulley (pulley) installed at the lower end of the hanging rope is used to lift the guide rail (see the second figure of the document, etc.). Therefore, if the tension pulley (pulley) falls from a high place and collides with an operator in the hoistway due to a defect or breakage of the hanging rope, the operator may be seriously injured.

[0008] Therefore, an object of the present invention is to provide a lifting system and a lifting method for an elevator rail, which can reduce the damage to the operator even if a part of the guide rail lifting mechanism falls.

[0009] Solutions to Solve Problems

[0010] In order to solve the above-mentioned problems, the lifting system of the elevator rail of the present invention lifts the rail set in the elevator's lifting channel, and comprises: a car, which is lifted and lowered along a car wire rope vertically arranged in the lifting channel; and a crane, which is lifted and lowered along a lifting wire rope vertically arranged in the lifting channel, and the crane has a suspension structure for suspending the rail.

[0011] Effects of the Invention

[0012] According to the elevator rail lifting system and lifting method of the present invention, even if a part of the guide rail lifting mechanism falls, it is possible to reduce the damage to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a top view of the lifting passage after the elevator is installed.

[0014] Figure 2 The following is a usage example of a lifting system according to an embodiment.

[0015] Figure 3 is a functional block diagram of a lifting system according to an embodiment.

[0016] Figure 4 This is a top view of the lift channel before the elevator is installed.

[0017] Figure 5 The present invention is an example of a suspension structure for installing a front rail in a lifting system of an embodiment.

[0018] Figure 6 The present invention is another example of a suspension structure for providing a front rail in a lifting system of an embodiment.

[0019] Explanation of symbols

[0020] 1—hoisting system, 11—crane, 11a—drive unit, 11b—control unit, 11c—suspension bracket, 11d, 11f—hanging equipment, 11e—hanging wire rope, 11g—track suspension clamp, 11h—track clamp, 11i—track anti-falling part, 12—cabin, 12a—drive unit, 12b—control unit, 12c—operating unit, 2—lifting passage, 21—floor station door, 22—beam, 23—hoisting wire rope, 24—cabin wire rope, 3—guide rail, 3a—installed track, 3b—pre-installation track, 31—car track, 32—counterweight track, 4—car, 41—car door, 5—counterweight. DETAILED DESCRIPTION

[0021] Hereinafter, an embodiment of the hoisting system of the elevator rail of the present invention will be described using the accompanying drawings. In addition, below, as shown in each figure, each direction of up and down, front and back, left and right is defined.

[0022] <Liftway after elevator installation>

[0023] Figure 1 This is a top view of the elevator shaft 2 after the elevator is installed. The elevator illustrated here is a bucket elevator, so a pair of car rails 31 for guiding the lifting and lowering of the car 4 and a pair of counterweight rails 32 for guiding the lifting and lowering of the counterweight 5 are provided inside the elevator shaft 2. Hereinafter, these rails are collectively referred to as guide rails 3. In addition, in this figure, 21 is a landing door, and 41 is a car door.

[0024] A guide block (not shown) engaged with the car rail 31 is provided on the side of the car 4, and slides on the car rail 31 to suppress the vibration of the car in the front, back, left, and right directions when the car is raised or lowered. Similarly, a guide block (not shown) engaged with the counterweight rail 32 is provided on the side of the counterweight 5, and slides on the counterweight rail 32 to suppress the vibration of the counterweight in the front, back, left, and right directions when the counterweight is raised or lowered.

[0025] <How to install rail 3>

[0026] Next, use Figures 2 to 5 The method of installing the guide rail 3 will be described.

[0027] In order to guide the lifting and lowering of the car 4 and the counterweight 5 throughout the entire height of the lifting channel 2, each guide rail 3 is vertically arranged from the upper end to the lower end of the lifting channel 2. The material of the guide rail 3 is a track with a length of about 3 to 5 meters, so it is rare to form a guide rail 3 with only one track. Usually, a guide rail 3 having a length roughly equal to the overall height of the lifting channel 2 is formed by sequentially adding new tracks (hereinafter referred to as "pre-setting tracks 3b") to the existing tracks 3a already set on the inner wall of the lifting channel 2.

[0028] Figure 2 This is a use example of the hoisting system 1 of this embodiment when a front track 3b is added to the upper end of an existing track 3a. The hoisting system 1 is a system including a crane 11 and a pod 12, and is a system that uses structures such as a beam 22, a hoisting wire rope 23, and a pod wire rope 24 provided in a hoistway 2 to respectively raise and lower the crane 11 and the pod 12.

[0029] Figure 3 1 is a functional block diagram of the crane system 1. As shown here, the crane 11 includes a drive unit 11a and a control unit 11b for controlling the drive unit 11a. In addition, the nacelle 12 includes a drive unit 12a, a control unit 12b for controlling the drive unit 12a, and an operation unit 12c for receiving an operation by a worker W.

[0030] The control unit 11b of the crane 11 and the control unit 12b of the pod 12 are connected in a manner that allows them to communicate via wire or wirelessly, so that the lifting and lowering of the crane 11 can be operated by instructions from the operator W via the operating unit 12c and the control unit 12b, or by instructions automatically generated by the control unit 12b of the pod 12.

[0031] When the two control units are connected by wire, a communication cable of about 5 m is used, so the control unit 12b of the nacelle 12 limits the lifting and lowering control of both parties so that the distance between the crane 11 and the nacelle 12 is maintained at a distance that does not damage the communication cable.

[0032] <<Crane 11>>

[0033] like Figure 2 As illustrated, the crane 11 is a machine that drives a driving unit 11a to lift itself to a desired height along a lifting wire rope 23 vertically arranged in the lifting passage 2, such as an electric ring winder. In this crane 11, the wire rope insertion port and the wire rope discharge port of the driving unit 11a are arranged on a straight line in the up and down direction. In addition, since the crane 11 of this embodiment is provided with a suspension mechanism for suspending the front rail 3b (details will be described later), when the crane 11 suspends the front rail 3b, the crane 11 and the front rail 3b are raised and lowered synchronously. In addition, when installing the elevator, it is necessary to set the crane 11 for each guide rail 3, but in Figure 2 For simplicity, only one crane 11 and one hoisting wire rope 23 are shown in the figure.

[0034] <<Pod 12>>

[0035] like Figure 2 As shown in the example, the pod 12 is a machine that drives the driving unit 12a to lift the work platform, which will become the work space of the worker W, to a desired height along the pod wire rope 24 vertically arranged in the hoistway 2. In the pod 12, the wire rope insertion port and the wire rope discharge port of the driving unit 12a are arranged on a straight line in the vertical direction.

[0036] <<Other structures>>

[0037] As a structure required for the lifting of the crane 11, an appropriate number (for example, two) of beams 22 are horizontally erected at the upper end of the hoistway 2. Similarly, as a structure required for the lifting of the nacelle 12, an appropriate number (for example, one) of beams 22 are horizontally erected at the upper end of the hoistway 2. In addition, the hoisting wire rope 23 and the nacelle wire rope 24 are connected to the beam 22 via a fixed wire rope, a sling, a hanging wire rope, a beam clamp, etc.

[0038] Figure 4 This is a top view of the hoistway 2 before the elevator is installed, and is a diagram illustrating the installation positions of the hoist wire rope 23 and the nacelle wire rope 24. Figure 1 and Figure 4 As can be seen from the comparison, each hoisting wire rope 23 is arranged near the position where the car rail 31 and the counterweight rail 32 should be set and does not hinder the lifting and lowering of the nacelle 12. In addition, a pair of nacelle wire ropes 24 are arranged in the center of the lifting passage 2.

[0039] In addition, Figure 4In the figure, all of the four lifting wire ropes 23 required for setting up the four guide rails 3 (31, 32) are illustrated, but it is not necessary to set all of them at the same time. For example, the lifting wire rope 23 for the car rail 31 can be tensioned and used to set the car rail 31 within the entire height range and then the lifting wire rope 23 for the car rail 31 can be removed; the lifting wire rope 23 for the counterweight rail 32 can be tensioned and used to set the counterweight rail 32 within the entire height range and then the lifting wire rope 23 for the counterweight rail 32 can be removed. The guide rail 3 can be set up while the lifting wire rope 23 is replaced.

[0040] <<An example of a suspension structure for installing the front rail 3b>>

[0041] Figure 5 This is an example of a structure in which the front rail 3b is suspended from the crane 11. As shown here, a highly rigid suspension bracket 11c is fixed to the main body of the crane 11 by bolts or the like. The upper end of the front rail 3b is suspended from the suspension bracket 11c via a hanger 11d such as a hook attached to the lower part of the suspension bracket 11c, a hanging wire rope 11e suspended from the hanger 11d, and a hanger 11f such as a hook attached to the lower end of the hanging wire rope 11e.

[0042] Thus, when the front rail 3b is hoisted to the height of the nacelle 12, the crane 11 suspending the front rail 3b is located at a position lower than the nacelle 12 during most of the time. Therefore, even if the eye wire rope suspending the hoisting wire rope 23 to the upper beam 22 or the eye wire rope 11e suspending the front rail 3b to the crane 11 is broken, the worker W on the nacelle 12 will not be injured by the crane 11 or the front rail 3b falling due to the breakage of the wire rope.

[0043] In addition, if Figure 2 As shown in the figure, when installing the guide rail 3, the crane 11 is also scheduled to rise to a position higher than the worker W on the nacelle 12. However, even in this case, unlike Patent Document 1 in which the tensioning pulley (pulley) is arranged at the uppermost part of the lifting channel, the distance between the crane 11 and the front rail 3b is extremely short, and the worker W. Therefore, even if the crane 11 and the front rail 3b fall due to the breakage of the hanging wire rope, the collision energy when contacting the worker W is relatively small, and the possibility of causing fatal damage to the worker W is small.

[0044] <<Another example of the suspension structure of the front rail 3b>>

[0045] If Figure 5If the front track 3b for setting the uppermost track is suspended by the method and lifted to the upper end of the lifting channel 2, the front track 3b for setting cannot be lifted to the height of the uppermost track due to the interference between the crane 11 and the top of the lifting channel 2.

[0046] Therefore, in Figure 6 In another example of the structure in which the front rail 3b is suspended from the crane 11, the upper end of the front rail 3b can be lifted to near the top of the hoistway 2 by suspending the lower part of the front rail 3b from the crane 11. Specifically, the suspension mechanism is as follows.

[0047] That is, a pair of rail suspension clamps 11g are used to clamp the lower two side surfaces of the front rail 3b, and each rail suspension clamp 11g is fixed to the front rail 3b using a rail clamp 11h. Then, the fixed rail suspension clamp 11g is connected to the hanger 11f (not shown) at the lower end of the hanging wire rope 11e. Furthermore, the rail anti-falling piece 11i is used to slidably connect the upper part of the front rail 3b to the lifting wire rope 23. In addition, the rail anti-falling piece 11i is provided on one end side (at Figure 6 The left end side in the middle) passes through the lifting wire rope 23 and the other end side (at Figure 6 The right end side in the middle) is connected to a hook or the like connected to the upper portion of the front rail 3b.

[0048] Therefore, when lifting the uppermost track, Figure 6 As shown, if the front rail 3b is installed on the crane 11, the upper end of the front rail 3b is higher than the crane 11. Therefore, even if the upper end of the front rail 3b is lifted to near the top of the lifting passage 2, there will be no interference between the crane 11 and the top of the lifting passage 2.

[0049] <Effects of this embodiment>

[0050] According to the hoisting system of the elevator rail of the present embodiment described above, even when a part of the guide rail hoisting mechanism, i.e., the crane, falls due to the breakage of the hanging wire rope, etc., the safety of the operator on the car can be ensured. In addition, even if the fallen crane comes into contact with the operator on the car, the damage to the operator can be reduced.

Claims

1. A lifting system for an elevator rail, which is a lifting system for lifting a rail arranged in an elevator hoistway, characterized in that: have: A nacelle that is raised and lowered along a nacelle steel wire rope vertically arranged in a lifting channel; and The crane is raised and lowered along a lifting wire rope arranged vertically in a lifting channel. The crane has a suspension structure for suspending the rail.

2. The lifting system of the elevator rail according to claim 1, characterized in that: The crane suspends the upper portion of the track via a sling and a hanging eye wire rope.

3. The lifting system of the elevator rail according to claim 1, characterized in that: The crane suspends the lower part of the track via a sling, a hanging wire rope and a track suspension clamp, and connects the upper part of the track to the lifting wire rope with a track anti-falling piece.

4. The lifting system for elevator rail according to claim 1, characterized in that: A nacelle control unit for controlling the raising and lowering of the nacelle and a crane control unit for controlling the raising and lowering of the crane are connected via a communication cable. The nacelle control unit controls the raising and lowering of the nacelle and the crane so that the nacelle and the crane are not separated by more than a predetermined distance.

5. The lifting system for elevator rail according to claim 1, characterized in that: The elevator is a bucket elevator. The track is a car track for guiding the car to rise and fall or a counterweight track for guiding the counterweight to rise and fall.

6. A method for lifting an elevator rail, which is a method for lifting a rail arranged in an elevator shaft, characterized in that: have: The step of suspending the rail from a crane that is raised and lowered along a lifting wire rope vertically disposed in the hoistway; and The step of raising the crane and the rail to the vicinity of a pod that is raised and lowered along a pod wire rope vertically arranged in a hoistway.

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