Elevator rope attachment device

Abstract

To provide an elevator rope attachment device capable of further reliably adjusting the position of a rope end relative to a fixed part.SOLUTION: In a counterweight side rope attachment device 8, which is a rope attachment device for an elevator, a connecting member 811 of a support part 81 has a rod part 811a. A first support attachment tool 812 attaches the rod part 811a to a machine base 5 as a fixed part. A second support attachment tool 813 attaches a hanging member 821 to the connecting member 811. A rope end attachment tool 822 attaches a second rope end 42 to the hanging member 821. The position of the second rope end 42 relative to the hanging member 821 can be adjusted in the vertical direction by the rope end attachment tool 822. The position of the support part 81 relative to the machine base 5 can be adjusted along the rod part 811a by the first support attachment tool 812.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a rope attachment device for an elevator.

Background Art

[0002] Generally, in a traction elevator, a car and a counterweight are suspended by ropes. At the bottom of the hoistway, a car side buffer and a counterweight side buffer are installed. The dimension between the counterweight and the counterweight side buffer when the car stops at the top floor, that is, the counterweight side landing dimension, is required to be maintained within a specified range. However, the ropes are constantly subjected to the respective loads of the car and the counterweight. For this reason, the ropes elongate over time. As a result, the positional relationship between the car and the counterweight changes over time, and the counterweight side landing dimension may become smaller than the specified range.

[0003] Patent Document 1 discloses an elevator rope length adjusting device that supports a rod provided at the end of a rope via a spring on a support plate and adjusts the positional relationship between the car and the counterweight by adjusting the position of the rod with respect to the support plate. A spring fixing nut that hangs on the support plate via a spring is screwed onto the rod. In the rope length adjusting device, the position of the rod is adjusted with respect to the support plate by adjusting the position of the spring fixing nut with respect to the rod.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the conventional elevator rope length adjusting device disclosed in Patent Document 1, the position of the rod is adjusted with respect to the support plate only within the range of the length of the rod provided at the end of the rope. Therefore, when the amount of elongation of the rope becomes larger than the range of the length of the rod, within the range of the amount of elongation of the rope that exceeds the length of the rod, the position of the rod cannot be adjusted with respect to the support plate.

[0006] The present disclosure solves the above problems, and an object thereof is to provide an elevator rope mounting device that can more reliably adjust the position of the rope terminal with respect to the fixed portion.

Means for Solving the Problems

[0007] The elevator rope mounting device according to the present disclosure includes a support portion attached to a fixed portion disposed at the upper part of the hoistway, and a rope stopper portion attached to the support portion at a position separated downward from the fixed portion. The rope stopper portion has a suspension member and a rope terminal fixture that attaches a rope terminal, which is an end of a rope for suspending an elevator car, to the suspension member in a state where the rope terminal is separated downward from the fixed portion. The support portion has a connecting member, a first support fixture for attaching the connecting member to the fixed portion, and a second support fixture for attaching the connecting member to the suspension member. The connecting member has a rod portion disposed along the vertical direction. At least one of the fixed portion and the suspension member is a rod attachment target portion to which the rod portion is attached. Among the first support fixture and the second support fixture, the support fixture that attaches the rod portion to the rod attachment target portion serves as a support position adjuster. The position of the rope terminal with respect to the suspension member can be adjusted in the vertical direction by the rope terminal fixture, and the position of the support portion with respect to the rod attachment target portion can be adjusted along the rod portion by the support position adjuster.

Effects of the Invention

[0008] According to the present disclosure, the position of the rope terminal with respect to the fixed portion can be adjusted more reliably.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying out the Invention

[0010] Embodiments for carrying out the subject of the present disclosure will be described with reference to the attached drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and duplicate descriptions will be appropriately simplified or omitted. Note that the subject of the present disclosure is not limited to the following embodiments, and within the scope not departing from the gist of the present disclosure, deformation of any component of the embodiment or omission of any component of the embodiment is possible.

[0011] Embodiment 1. FIG. 1 is a schematic configuration diagram showing an elevator according to Embodiment 1. In the figure, in the hoistway 1, a car 2 and a counterweight 3 are respectively suspended as elevating bodies by a plurality of ropes 4. In FIG. 1, only one rope 4 is shown for simplicity.

[0012] The car 2 has a car body 21 and a pair of car suspension wheels 22. The pair of car suspension wheels 22 are provided at the lower part of the car body 21.

[0013] The counterweight 3 has a counterweight body 31 and a weight suspension wheel 32. The weight suspension wheel 32 is provided at the upper part of the counterweight body 31.

[0014] Above the hoistway 1, a machine platform 5 is arranged. The machine platform 5 is fixed to a support structure (described later) fixed within the hoistway 1. On the machine platform 5, a hoisting machine 6, which is a driving device, is mounted. Therefore, the machine platform 5 bears the load of the hoisting machine 6. The hoisting machine 6 generates a driving force for moving the car 2 and the counterweight 3.

[0015] The hoisting machine 6 has a hoisting machine main body 61 and a driving sheave 62. The driving sheave 62 is provided on the hoisting machine main body 61. The hoisting machine main body 61 has a motor. The motor of the hoisting machine main body 61 generates a driving force for rotating the driving sheave 62.

[0016] Two rope attachment devices are provided on the machine platform 5. That is, a car-side rope attachment device 7 and a counterweight-side rope attachment device 8 are provided on the machine platform 5. The counterweight-side rope attachment device 8 is arranged at a position closer to the hoisting machine 6 than the car-side rope attachment device 7.

[0017] Of both ends of each rope 4, one end becomes a first rope terminal 41, and the other end becomes a second rope terminal 42. The first rope terminal 41 is a rope terminal attachable to the car-side rope attachment device 7. The second rope terminal 42 is a rope terminal attachable to the counterweight-side rope attachment device 8. Each first rope terminal 41 is attached to the car-side rope attachment device 7. Each second rope terminal 42 is attached to the counterweight-side rope attachment device 8.

[0018] Each rope 4 is wound around in order from the car-side rope attachment device 7 through a pair of car suspension wheels 22, the driving sheave 62, and the weight suspension wheel 32, and reaches the counterweight-side rope attachment device 8. The car 2 and the counterweight 3 move vertically in the hoistway 1 in response to the rotation of the driving sheave 62. As a result, the moving direction of the car 2 and the moving direction of the counterweight 3 are opposite to each other.

[0019] Inside the hoistway 1, a pair of car guide rails 11 and a pair of counterweight guide rails 12 are installed along the vertical direction respectively. The upper end of each car guide rail 11 and one of the counterweight guide rails 12 is located at a position higher than the hoisting machine 6. The upper end of the other counterweight guide rail 12 receives the lower surface of the machine base 5.

[0020] The car 2 is arranged between a pair of car guide rails 11. The car 2 moves vertically while being guided by the pair of car guide rails 11. The counterweight 3 is arranged between a pair of counterweight guide rails 12. The counterweight 3 moves vertically while being guided by the pair of counterweight guide rails 12.

[0021] The car 2 moves vertically within the car movement range set in the hoistway 1. The counterweight 3 moves vertically within the counterweight movement range adjacent to the car movement range. The counterweight movement range is set below the machine base 5. The counterweight side rope attachment device 8 is arranged above the counterweight movement range and below the hoisting machine 6.

[0022] At the bottom of the hoistway 1, a car side buffer 13 and a counterweight side buffer 14 are provided. The car side buffer 13 is located below the car movement range. The counterweight side buffer 14 is located below the counterweight movement range.

[0023] Figure 2 is a perspective view showing the state when the counterweight side rope attachment device 8 in Figure 1 is viewed from the front side of the hoisting machine 6. Figure 3 is a perspective view showing the state when the counterweight side rope attachment device 8 in Figure 2 is viewed from the back side of the hoisting machine 6. The support structure 15 fixed in the hoistway 1 reaches from the bottom of the hoistway 1 to the upper part of the hoistway 1. The machine base 5 is supported by the support structure 15. Each car guide rail 11 and each counterweight guide rail 12 are fixed to the support structure 15.

[0024] The machine base 5 has a protruding plate portion 51 as a fixing portion. The protruding plate portion 51 is a part of the machine base 5. The protruding plate portion 51 horizontally protrudes from the main body portion of the machine base 5 at the upper part of the machine base 5. Thereby, the protruding plate portion 51 is horizontally disposed above the lifting path 1. In the present embodiment, the protruding plate portion 51 receives a part of the load of the hoisting machine 6.

[0025] The counterweight side rope attachment device 8 has a support portion 81 and a rope stopper portion 82. The support portion 81 is attached to the protruding plate portion 51 of the machine base 5. The rope stopper portion 82 is attached to the support portion 81 at a position separated downward from the protruding plate portion 51.

[0026] The rope stopper portion 82 has a suspension member 821 and a plurality of rope terminal attachments 822.

[0027] A plurality of through holes for rope terminals (not shown) are provided in the suspension member 821. The plurality of through holes for rope terminals correspond to the plurality of second rope terminals 42. Each second rope terminal 42 has a terminal rod 421. Each terminal rod 421 is passed vertically through the corresponding through hole for rope terminal of the suspension member 821. A screw portion is formed on the outer peripheral surface of the terminal rod 421.

[0028] The plurality of rope terminal attachments 822 correspond to the plurality of second rope terminals 42. Each rope terminal attachment 822 attaches the corresponding second rope terminal 42 to the suspension member 821. Each second rope terminal 42 is attached to the suspension member 821 in a state of being separated downward from the protruding plate portion 51. The downward load applied to each rope 4 is applied to the suspension member 821 from each second rope terminal 42 via the rope terminal attachment 822.

[0029] Each rope terminal attachment 822 has a detachment prevention member 823 and a spring 824.

[0030] The detachment prevention member 823 is attached to the terminal rod 421 of the corresponding second rope terminal 42. The detachment prevention member 823 has a plurality of nuts. The plurality of nuts in the detachment prevention member 823 are screwed onto the terminal rod 421 in an overlapping manner. Thereby, the detachment prevention member 823 is attached to the terminal rod 421 above the suspension member 821. The position of the detachment prevention member 823 with respect to the terminal rod 421 can be adjusted along the terminal rod 421 by turning the plurality of nuts in the detachment prevention member 823.

[0031] The spring 824 is disposed between the detachment prevention member 823 and the suspension member 821. The detachment prevention member 823 is hung on the suspension member 821 via the spring 824. The spring 824 receives the downward load applied to the rope 4 from the detachment prevention member 823. Thereby, the spring 824 is contracted while elastically deforming between the detachment prevention member 823 and the suspension member 821. In the rope terminal fixture 822, since the detachment prevention member 823 is hung on the suspension member 821 via the spring 824, the terminal rod 421 is prevented from coming off downward from the suspension member 821.

[0032] The position of the second rope terminal 42 with respect to the suspension member 821 can be adjusted along the terminal rod 421 by adjusting the position of the detachment prevention member 823 with respect to the terminal rod 421. Thereby, the position of the second rope terminal 42 with respect to the suspension member 821 can be adjusted in the vertical direction by the rope terminal fixture 822.

[0033] The support portion 81 has a pair of connecting members 811, a pair of first support fixtures 812, and a pair of second support fixtures 813. The first support fixture 812 is a support fixture for attaching the connecting member 811 to the overhanging plate portion 51 of the machine base 5. The second support fixture 813 is a support fixture for attaching the connecting member 811 to the suspension member 821.

[0034] The pair of first support fixtures 812 and the pair of second support fixtures 813 correspond to the pair of connecting members 811. Each first support fixture 812 attaches the corresponding connecting member 811 to the overhanging plate portion 51 of the machine base 5. Each second support fixture 813 attaches the corresponding connecting member 811 to the suspension member 821.

[0035] As shown in FIG. 3, a plurality of through holes 511 are provided in the overhanging plate portion 51 of the machine base 5. The pair of connecting members 811 are passed through two of the plurality of through holes 511.

[0036] The connecting member 811 has a rod portion 811a and a connecting portion 811b. The rod portion 811a is arranged along the vertical direction. A threaded portion is formed on the outer peripheral surface of the rod portion 811a. The connecting portion 811b is fixed to the lower end portion of the rod portion 811a.

[0037] The overhanging plate portion 51 of the machine base 5 serves as a rod mounting target portion to which the rod portion 811a is attached. Each first support fixture 812 attaches the rod portion 811a of the corresponding connecting member 811 to the overhanging plate portion 51.

[0038] The first support fixture 812 has a plurality of nuts. The plurality of nuts in the first support fixture 812 are screwed onto the rod portion 811a in an overlapping manner. Thereby, the first support fixture 812 is attached to the rod portion 811a above the overhanging plate portion 51. The position of the first support fixture 812 with respect to the rod portion 811a can be adjusted along the rod portion 811a by turning the plurality of nuts in the first support fixture 812.

[0039] The first support fixture 812 hangs over the overhanging plate portion 51 from above. Thereby, it is prevented that the rod portion 811a comes out downward from the overhanging plate portion 51. The rod portion 811a is attached to the overhanging plate portion 51 by the first support fixture 812 hanging over the overhanging plate portion 51.

[0040] The position of the rod portion 811a with respect to the overhanging plate portion 51 can be adjusted along the rod portion 811a by adjusting the position of the first support fixture 812 with respect to the rod portion 811a. Thereby, the position of the rod portion 811a with respect to the overhanging plate portion 51 can be adjusted along the rod portion 811a by the first support fixture 812. That is, the first support fixture 812 serves as a support position adjuster for adjusting the position of the rod portion 811a with respect to the overhanging plate portion 51.

[0041] Each second support fixture 813 attaches the connection portion 811b of the corresponding connecting member 811 to the suspension member 821. Thereby, the suspension member 821 is located at a position away from the overhanging plate portion 51 downward.

[0042] In the present embodiment, a fastening tool for fastening the connection portion 811b and the suspension member 821 is used as the second support fixture 813. Further, in the present embodiment, each connection portion 811b is rotatably attached to the suspension member 821 about the second support fixture 813.

[0043] Loads such as the cage 2 and the counterweight 3 are constantly applied to each rope 4. Thereby, each rope 4 elongates over time. When each rope 4 elongates, the positional relationship between the cage 2 and the counterweight 3 changes. Thereby, when each rope 4 elongates, the dimension between the counterweight 3 and the counterweight side buffer 14 when the cage 2 stops at the top floor, that is, the counterweight side ramp dimension, shrinks. When the counterweight side ramp dimension becomes smaller than the specified range, there is a risk of problems such as the counterweight 3 colliding with the counterweight side buffer 14 when the cage 2 stops at the top floor.

[0044] Therefore, when the counterweight side ramp dimension has become smaller than the specified range due to the elongation of each rope 4, the counterweight side ramp dimension is adjusted during elevator maintenance inspection so as to fall within the specified range. The adjustment of the counterweight side ramp dimension is performed by adjusting the position of each second rope terminal 42 with respect to the overhanging plate portion 51 in the counterweight side rope attachment device 8.

[0045] When adjusting the positions of the respective second rope terminals 42 with respect to the overhanging plate portion 51, first, the positions of the respective first support fittings 812 with respect to the rod portions 811a are adjusted along the rod portions 811a. The adjustment of the positions of the first support fittings 812 with respect to the rod portions 811a is performed by turning a plurality of nuts in the first support fittings 812. Thereby, the position of the rope stop portion 82 with respect to the overhanging plate portion 51 is adjusted, and the positions of the respective second rope terminals 42 with respect to the overhanging plate portion 51 are collectively adjusted.

[0046] After that, if necessary, the position of at least any one of the plurality of second rope terminals 42 is adjusted in the vertical direction with respect to the suspension member 821. When adjusting the position of the second rope terminal 42 with respect to the suspension member 821, the position of the detachment prevention member 823 with respect to the terminal rod 421 is adjusted along the terminal rod 421. The adjustment of the position of the detachment prevention member 823 with respect to the terminal rod 421 is performed by turning a plurality of nuts in the detachment prevention member 823. Thereby, the position of the second rope terminal 42 with respect to the suspension member 821 is adjusted. In this way, the balance weight side run-by dimension is adjusted so as to fall within the specified range.

[0047] In such a balance weight side rope attachment device 8 of an elevator, the support portion 81 is attached to the overhanging plate portion 51 of the machine base 5. The rope stopper portion 82 is attached to the support portion 81 at a position separated downward from the overhanging plate portion 51. In the rope stopper portion 82, the rope terminal fixture 822 attaches the second rope terminal 42 to the hanging member 821. In the support portion 81, the first support fixture 812 attaches the rod portion 811a of the connecting member 811 to the overhanging plate portion 51. The position of the second rope terminal 42 with respect to the hanging member 821 can be adjusted in the vertical direction by the rope terminal fixture 822. The position of the support portion 81 with respect to the overhanging plate portion 51 can be adjusted along the rod portion 811a by the first support fixture 812. Therefore, in addition to the adjustment range of the position of the second rope terminal 42 with respect to the hanging member 821, the position of the second rope terminal 42 with respect to the overhanging plate portion 51 can also be adjusted within the length range of the rod portion 811a. Thereby, even when the elongation of each rope 4 exceeds the adjustment range of the position of the second rope terminal 42 with respect to the hanging member 821, the position of the second rope terminal 42 with respect to the overhanging plate portion 51 can be adjusted according to the elongation of each rope 4. Therefore, the position of the second rope terminal 42 with respect to the overhanging plate portion 51 can be adjusted more reliably, and the balance weight side ramby dimension can be adjusted more reliably.

[0048] Here, when each rope 4 elongates and adjustment of the balance weight side ramby dimension becomes necessary, the balance weight side ramby dimension can also be adjusted by a trimming operation of cutting each rope 4 to shorten the actual length of each rope 4. However, the trimming operation is more laborious than the adjustment operation of the position of the second rope terminal 42 with respect to the overhanging plate portion 51.

[0049] In the present embodiment, since the adjustment range of the position of the second rope terminal 42 with respect to the overhanging plate portion 51 is expanded, it is possible to eliminate the trimming operation or reduce the frequency of the trimming operation. Thereby, the balance weight side ramby dimension can be easily adjusted, the cost of the maintenance and inspection work of the elevator can be reduced, and the long life of the elevator can also be achieved.

[0050] In addition, since a plurality of second rope terminals 42 are attached to the rope stop portion 82, by adjusting the position of the support portion 81 with respect to the overhanging plate portion 51, the positions of the plurality of second rope terminals 42 can be collectively adjusted with respect to the overhanging plate portion 51. As a result, the position of each second rope terminal 42 with respect to the overhanging plate portion 51 can be easily adjusted, and the adjustment time of the position of each second rope terminal 42 with respect to the overhanging plate portion 51 can be shortened.

[0051] In the counterweight side rope attachment device 8, the support portion 81 is attached to the machine base 5. The machine base 5 is supported by the support structure 15. Therefore, the load applied to the counterweight side rope attachment device 8 can be supported by the machine base 5. As a result, it is not necessary to install a mounting base for supporting the counterweight side rope attachment device 8 below the machine base 5, and the counterweight side rope attachment device 8 can be arranged below the machine base 5 while avoiding the space for installing each counterweight guide rail 12. Therefore, even in a state where each counterweight guide rail 12 is not installed, the counterweight side rope attachment device 8 can be arranged below the machine base 5, and a suspension scaffold can be suspended from the counterweight side rope attachment device 8. As a result, a scaffoldless method, that is, a WOS method, in which an operator rides on the suspension scaffold suspended from the counterweight side rope attachment device 8 can be adopted as a method for installing an elevator. Therefore, for example, the installation of the counterweight guide rail 12 and the like can be performed by the WOS method. Thereby, the burden of the elevator installation work can be reduced. In addition, the cost required for the elevator installation work can also be reduced.

[0052] In addition, in Embodiment 1, the machine base 5 is supported by the support structure 15. However, the machine base 5 may be supported by each cage guide rail 11 and each counterweight guide rail 12. Even in this case, the position of the second rope terminal 42 can be adjusted with respect to the overhanging plate portion 51 within a range exceeding the adjustment range of the position of the second rope terminal 42 with respect to the suspension member 821. Therefore, the position of the second rope terminal 42 with respect to the overhanging plate portion 51 can be adjusted more reliably. Further, in this way, the support structure 15 can be eliminated, and the degree of freedom in designing the space within the hoistway 1 can be improved.

[0053] In addition, in Embodiment 1, the connection portion 811b of the connecting member 811 is attached to the suspension member 821. However, the connection portion 811b of the connecting member 811 may be eliminated, and the rod portion 811a of the connecting member 811 may be attached to the suspension member 821. That is, the rod attachment target portion to which the rod portion 811a is attached may be the suspension member 821. In this case, a rod through-hole for passing the rod portion 811a is provided in the suspension member 821. Further, in this case, the rod portion 811a is attached to the suspension member 821 by the second support fixture 813. Furthermore, in this case, the second support fixture 813 has a plurality of nuts screwed onto the rod portion 811a. Also, in this case, by turning the plurality of nuts in the second support fixture 813, the position of the rod portion 811a with respect to the suspension member 821 is adjusted. Thereby, the second support fixture 813 serves as a support position adjuster for adjusting the position of the rod portion 811a with respect to the suspension member 821. In this way, not only the position of the rod portion 811a with respect to the overhanging plate portion 51 but also the position of the rod portion 811a with respect to the suspension member 821 can be adjusted to adjust the position of the second rope terminal 42 with respect to the overhanging plate portion 51.

[0054] Embodiment 2. FIG. 4 is a front view showing a counterweight side rope attachment device of an elevator according to Embodiment 2. At the top of the hoistway 1, a plurality of building beams 16 are horizontally arranged as fixing parts. The plurality of building beams 16 are part of the building structure, that is, part of the building framework. The plurality of building beams 16 are exposed inside the hoistway 1. The plurality of building beams 16 are arranged at a position higher than the machine table 5.

[0055] Each building beam 16 has a vertical plate portion 161, a pair of lower horizontal plate portions 162, and a pair of upper horizontal plate portions 163. When looking at the building beam 16 along its longitudinal direction, the vertical plate portion 161 is arranged along the vertical direction. The pair of lower horizontal plate portions 162 horizontally protrude from the lower end portion of the vertical plate portion 161 in opposite directions to each other. The pair of upper horizontal plate portions 163 horizontally protrude from the upper end portion of the vertical plate portion 161 in opposite directions to each other. As the building beam 16, an H-shaped steel is used. Therefore, the cross-sectional shape of the building beam 16 is an H shape formed by the vertical plate portion 161, the pair of lower horizontal plate portions 162, and the pair of upper horizontal plate portions 163.

[0056] The counterweight side rope attachment device 8 has a support portion 81 and a rope stopper portion 82.

[0057] The rope stopper portion 82 has a suspension member 821 and a plurality of rope terminal fittings 822.

[0058] The suspension member 821 is horizontally arranged at a position below the machine table 5. The suspension member 821 is provided with a plurality of through holes for rope terminals (not shown) and two through holes for rods (not shown). In the present embodiment, the two through holes for rods are located at positions horizontally separated from each other, and the plurality of through holes for rope terminals are located between the two through holes for rods.

[0059] In each through-hole for the rope terminal, the terminal rod 421 of the second rope terminal 42 is passed through in the vertical direction. Each rope terminal fixture 822 attaches the corresponding second rope terminal 42 to the suspension member 821. The configuration of the rope terminal fixture 822 is the same as that in the first embodiment. Accordingly, the position of the second rope terminal 42 with respect to the suspension member 821 can be adjusted in the vertical direction by the rope terminal fixture 822.

[0060] The support portion 81 includes a pair of connecting members 811, a pair of first support fixtures 812, and a pair of second support fixtures 813. The pair of connecting members 811 are attached to two different building beams 16 among the plurality of building beams 16.

[0061] The pair of first support fixtures 812 correspond to the pair of connecting members 811. Each first support fixture 812 attaches the corresponding connecting member 811 to the building beam 16. The pair of second support fixtures 813 correspond to the pair of connecting members 811. Each second support fixture 813 attaches the corresponding connecting member 811 to the suspension member 821.

[0062] Each connecting member 811 has a rod portion 811a and a connecting portion 811b. The rod portion 811a and the connecting portion 811b are arranged along the vertical direction. A threaded portion is formed on the outer peripheral surface of the rod portion 811a. The connecting portion 811b is fixed to the upper end portion of the rod portion 811a.

[0063] The first support fixture 812 attaches the upper end portion of the connecting portion 811b of the corresponding connecting member 811 to the building beam 16. In the present embodiment, a fixture that is hung on and held by a pair of lower horizontal plate portions 162 of the building beam 16 is used as the first support fixture 812. In the present embodiment, since the first support fixture 812 is held by the pair of lower horizontal plate portions 162, the connecting portion 811b of the connecting member 811 is attached to the building beam 16.

[0064] A pair of connecting members 811 are suspended downward from two different building beams 16. As a result, the lower end portions of the rod portions 811a of the respective connecting members 811 are located at positions below the machine base 5. Each rod portion 811a is individually passed through two rod through-holes in the suspension member 821.

[0065] The suspension member 821 serves as a rod attachment target portion to which the rod portion 811a is attached. Each second support fixture 813 attaches the rod portion 811a of the corresponding connecting member 811 to the suspension member 821. As a result, the suspension member 821 is located at a position separated downward from each building beam 16. In the present embodiment, the suspension member 821 is located at a position below the machine base 5.

[0066] The second support fixture 813 has a plurality of nuts. The plurality of nuts in the second support fixture 813 are screwed onto the rod portion 811a in an overlapping manner. The second support fixture 813 receives the suspension member 821 from below. Thereby, it is possible to prevent the rod portion 811a from coming out upward from the suspension member 821.

[0067] The position of the second support fixture 813 with respect to the rod portion 811a can be adjusted along the rod portion 811a by turning the plurality of nuts in the second support fixture 813. The position of the rod portion 811a with respect to the suspension member 821 can be adjusted along the rod portion 811a by adjusting the position of the second support fixture 813 with respect to the rod portion 811a. Thereby, the second support fixture 813 serves as a support position adjuster for adjusting the position of the rod portion 811a with respect to the suspension member 821. Therefore, the position of the rope fixing portion 82 with respect to the building beam 16 can be adjusted along the rod portion 811a by the second support fixture 813. Other configurations are the same as those in the first embodiment.

[0068] The adjustment of the balance weight side lambai dimension is performed by adjusting the positions of the respective second rope terminals 42 with respect to the building beam 16 in the balance weight side rope attachment device 8. When adjusting the positions of the respective second rope terminals 42 with respect to the building beam 16, first, the positions of the respective second support fittings 813 with respect to the rod portions 811a are adjusted along the rod portions 811a. The adjustment of the position of the second support fitting 813 with respect to the rod portion 811a is performed by turning a plurality of nuts in the second support fitting 813. As a result, the position of the rope stop portion 82 with respect to the building beam 16 is adjusted, and the positions of the respective second rope terminals 42 with respect to the building beam 16 are collectively adjusted.

[0069] Thereafter, if necessary, the position of at least any one of the plurality of second rope terminals 42 is adjusted in the vertical direction with respect to the suspension member 821. The procedure for adjusting the position of the second rope terminal 42 with respect to the suspension member 821 is the same as that in the first embodiment. In this way, the balance weight side lambai dimension is adjusted so as to fall within the specified range.

[0070] In such a balance weight side rope attachment device 8 of the elevator, the support portion 81 is attached to the building beam 16. Therefore, the load applied to the balance weight side rope attachment device 8 can be supported by the building beam 16. As a result, the load applied to the machine base 5 and the support structure 15 can be reduced, and the enlargement of the machine base 5 and the support structure 15 can be suppressed. Therefore, the cost reduction of the entire elevator can be achieved.

[0071] In the second embodiment, the machine base 5 is supported by the support structure 15. However, the machine base 5 may be supported by each car guide rail 11 and each balance weight guide rail 12. In this way, the support structure 15 can be eliminated, and the degree of freedom in designing the space in the hoistway 1 can be improved. Further, since the load applied to the machine base 5 is reduced, even if the machine base 5 is supported by each car guide rail 11 and each balance weight guide rail 12, the degree of enlargement of each car guide rail 11 and each balance weight guide rail 12 can be reduced.

[0072] In Embodiment 2, the connecting portion 811b of the connecting member 811 is attached to the building beam 16. However, the connecting portion 811b of the connecting member 811 may be eliminated, and the rod portion 811a of the connecting member 811 may be attached to the building beam 16. That is, the rod attachment target portion to which the rod portion 811a is attached may be the building beam 16. In this case, a rod through hole for passing the rod portion 811a is provided in the lower horizontal plate portion 162 of the building beam 16. Further, in this case, the rod portion 811a is attached to the lower horizontal plate portion 162 of the building beam 16 by the first support fixture 812. Furthermore, in this case, the first support fixture 812 has a plurality of nuts screwed into the rod portion 811a. Also, in this case, by turning the plurality of nuts in the first support fixture 812, the position of the rod portion 811a with respect to the building beam 16 is adjusted. Thereby, the first support fixture 812 serves as a support position adjuster for adjusting the position of the rod portion 811a with respect to the building beam 16. In this way, not only the position of the rod portion 811a with respect to the suspension member 821 but also the position of the rod portion 811a with respect to the building beam 16 can adjust the position of the second rope terminal 42 with respect to the building beam 16.

[0073] As described above, the configurations shown in the above embodiments are examples of the content of the present disclosure. The embodiments can be combined with other known technologies. It is possible to omit or change a part of the configuration of the embodiments without departing from the gist of the present disclosure.

Explanation of Reference Numerals

[0074] 1 Elevator shaft, 2 Car (lifting body), 3 Counterweight (lifting body), 5 Machine base (fixed part), 8 Counterweight side rope attachment device (rope attachment device), 15 Support structure, 16 Building beam (fixed part), 42 Second rope terminal (rope terminal), 81 Support part, 82 Rope stopper, 811 Connecting member, 811a Rod part, 812 First support fixture, 813 Second support fixture, 821 Suspension member, 822 Rope terminal attachment fixture.

Claims

1. a support part attached to a fixing part disposed at the upper part of the hoistway; a rope stopper attached to the support part at a position away downward from the fixing part; and comprising; the rope stopper has a suspension member and a rope terminal fixture for attaching a rope terminal, which is an end of a rope for suspending a lifting body, to the suspension member in a state where the rope terminal is away downward from the fixing part; the support part has a connecting member, a first support fixture for attaching the connecting member to the fixing part, and a second support fixture for attaching the connecting member to the suspension member; the connecting member has a rod part disposed along the vertical direction; at least one of the fixing part and the suspension member is a rod attachment target part to which the rod part is attached; among the first support fixture and the second support fixture, the support fixture for attaching the rod part to the rod attachment target part is a support position adjuster; the position of the rope terminal with respect to the suspension member is adjustable in the vertical direction by the rope terminal fixture; a rope attachment device for an elevator, wherein the position of the support part with respect to the rod attachment target part is adjustable along the rod part by the support position adjuster.

2. The rope attachment device for an elevator according to claim 1, wherein the fixing part is a part of a building structure.

3. The fixing part is a part of a machine base that receives a load of a driving device that generates a driving force for moving the lifting body, and the machine base is supported by a support structure fixed in the hoistway. The rope attachment device for an elevator according to claim 1.

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