Rope mounting device for elevator

Abstract

The invention provides a rope mounting device of an elevator, which can more reliably adjust the position of the tail end of a rope relative to a fixed part. In a counterweight side rope mounting device (8) which is a rope mounting device of an elevator, a connecting part (811) of a supporting part (81) is provided with a rod part (811a). The first support mount (812) has a rod section (811a) attached to a base (5) as a fixing section. The second support attachment member (813) attaches the suspension member (821) to the connecting member (811). A rope end attachment (822) attaches the second rope end (42) to the suspension member (821). The position of the second rope end (42) with respect to the suspension member (821) can be adjusted in the vertical direction by a rope end mount (822). The position of the supporting part (81) relative to the machine base (5) can be adjusted along the rod part (811a) through the first supporting installation piece (812).

Description

Technical Field

[0001] The present disclosure relates to a rope installation device for an elevator. Background Art

[0002] Generally, in a traction elevator, a car and a counterweight are suspended by ropes. A car-side buffer and a counterweight-side buffer are provided at the bottom of a hoistway. The dimension between the counterweight and the counterweight-side buffer when the car stops at the uppermost floor, that is, the counterweight-side overrun dimension, is required to be maintained within a specified range. However, loads of the car and the counterweight are always applied to the ropes. Therefore, the ropes elongate over time. As a result, the positional relationship between the car and the counterweight changes over time, and the counterweight-side overrun dimension sometimes becomes smaller than the specified range.

[0003] In Patent Document 1, a rope length adjustment device for an elevator is disclosed, in which a rod provided at an end of a rope is supported by a support plate via a spring, and the positional relationship between the car and the counterweight is adjusted by adjusting the position of the rod relative to the support plate. A spring fixing nut that is locked to the support plate via a spring is screwed onto the rod. In the rope length adjustment device, the position of the rod is adjusted relative to the support plate by adjusting the position of the spring fixing nut relative to the rod.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2016-55953 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In the existing rope length adjustment device for an elevator disclosed in Patent Document 1, the position of the rod is adjusted relative to the support plate only within the length range of the rod provided at the end of the rope. Therefore, if the elongation dimension of the rope is larger than the length range of the rod, the position of the rod cannot be adjusted relative to the support plate within the range where the elongation dimension of the rope exceeds the length of the rod.

[0009] The present disclosure is for solving the above-described problems, and an object thereof is to provide a rope installation device for an elevator that can more reliably adjust the position of the rope end relative to a fixed portion.

[0010] Means for Solving the Problems

[0011] The rope installation device of the elevator of the present disclosure includes: a support portion installed on a fixing portion disposed at the upper part of a hoistway; and a rope fastening portion installed on the support portion at a position spaced downward from the fixing portion. The rope fastening portion has: a suspension member; and a rope end mounting member that mounts a rope end, which is an end of a rope suspending a lifting body, to the suspension member in a state where the rope end is spaced downward from the fixing portion. The support portion has: a connecting member; a first support mounting member that mounts the connecting member to the fixing portion; and a second support mounting member that mounts the connecting member to the suspension member. The connecting member has a rod portion disposed along the vertical direction, and at least one of the fixing portion and the suspension member serves as a rod mounting target portion for mounting the rod portion. The support mounting member that mounts the rod portion to the rod mounting target portion among the first support mounting member and the second support mounting member serves as a support position adjuster. The position of the rope end relative to the suspension member can be adjusted in the vertical direction by the rope end mounting member, and the position of the support portion relative to the rod mounting target portion can be adjusted along the rod portion by the support position adjuster.

[0012] Advantages of the Invention

[0013] According to the present disclosure, the position of the rope end relative to the fixing portion can be adjusted more reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram showing an elevator according to Embodiment 1.

[0015] Figure 2 is a perspective view showing a state when observing the counterweight side rope installation device from the front side of the traction machine Figure 1 of the elevator.

[0016] Figure 3 is a perspective view showing a state when observing the counterweight side rope installation device from the back side of the traction machine Figure 2 of the elevator.

[0017] Figure 4 is a front view showing the counterweight side rope installation device of the elevator according to Embodiment 2. DETAILED DESCRIPTION OF THE INVENTION

[0018] A mode for implementing the object of the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and repeated descriptions are appropriately simplified or omitted. In addition, the object 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 constituent element of the embodiment or omission of any constituent element of the embodiment can be performed.

[0019] Embodiment 1.

[0020] Figure 1It is a schematic structural diagram of an elevator showing Embodiment 1. In the figure, in hoistway 1, car 2 and counterweight 3 are respectively suspended as lifting bodies by multiple ropes 4. In Figure 1 For simplicity, only one rope 4 is shown.

[0021] 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.

[0022] Counterweight 3 has a counterweight body 31 and a counterweight suspension wheel 32. The counterweight suspension wheel 32 is provided at the upper part of the counterweight body 31.

[0023] A machine base 5 is arranged at the upper part of hoistway 1. The machine base 5 is fixed to a support structure described later, and this support structure is fixed within hoistway 1. A traction machine 6 as a driving device is placed on the machine base 5. Therefore, the machine base 5 bears the load of the traction machine 6. The traction machine 6 generates a driving force for moving the car 2 and the counterweight 3.

[0024] Traction machine 6 has a traction machine body 61 and a drive sheave 62. The drive sheave 62 is provided on the traction machine body 61. The traction machine body 61 has a motor. The motor of the traction machine body 61 generates a driving force for rotating the drive sheave 62.

[0025] Two rope mounting devices are provided on the machine base 5. That is, a car-side rope mounting device 7 and a counterweight-side rope mounting device 8 are provided on the machine base 5. The counterweight-side rope mounting device 8 is arranged at a position closer to the traction machine 6 than the car-side rope mounting device 7.

[0026] One end of each of the two ends of the rope 4 becomes a first rope end 41, and the other end becomes a second rope end 42. The first rope end 41 is a rope end that can be mounted on the car-side rope mounting device 7. The second rope end 42 is a rope end that can be mounted on the counterweight-side rope mounting device 8. Each first rope end 41 is mounted on the car-side rope mounting device 7. Each second rope end 42 is mounted on the counterweight-side rope mounting device 8.

[0027] Each rope 4 is wound around the pair of car suspension wheels 22, the drive sheave 62, and the counterweight suspension wheel 32 in sequence from the car-side rope mounting device 7 and reaches the counterweight-side rope mounting device 8. The car 2 and the counterweight 3 move in the vertical direction within the hoistway 1 according to the rotation of the drive sheave 62. Thus, the moving direction of the car 2 and the moving direction of the counterweight 3 are opposite to each other.

[0028] Within hoistway 1, a pair of car guide rails 11 and a pair of counterweight guide rails 12 are respectively arranged along the vertical direction. The upper ends of each car guide rail 11 and one of the counterweight guide rails 12 are located at a position higher than the traction machine 6. The upper end of the other counterweight guide rail 12 bears the lower surface of the machine base 5.

[0029] The car 2 is disposed between a pair of car guide rails 11. The car 2 is guided by the pair of car guide rails 11 and moves in the vertical direction. The counterweight 3 is disposed between a pair of counterweight guide rails 12. The counterweight 3 is guided by the pair of counterweight guide rails 12 and moves in the vertical direction.

[0030] The car 2 moves in the vertical direction within a car movement range set in the hoistway 1. The counterweight 3 moves in the vertical direction within a counterweight movement range adjacent to the car movement range. The counterweight movement range is set at a position below the machine base 5. The counterweight side rope mounting device 8 is disposed at a position above the counterweight movement range and below the traction machine 6.

[0031] A car side buffer 13 and a counterweight side buffer 14 are provided at the bottom of the hoistway 1. The car side buffer 13 is located at a position below the car movement range. The counterweight side buffer 14 is located at a position below the counterweight movement range.

[0032] Figure 2 is a perspective view showing the state when observing the counterweight side rope mounting device 8 from the front side of the traction machine 6 Figure 1 of the counterweight side rope mounting device 8. Figure 3 is a perspective view showing the state when observing the counterweight side rope mounting device 8 from the back side of the traction machine 6 Figure 2 of the counterweight side rope mounting device 8. 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.

[0033] 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. Thus, the protruding plate portion 51 is horizontally disposed in the upper part of the hoistway 1. In the present embodiment, the protruding plate portion 51 bears a part of the load of the traction machine 6.

[0034] The counterweight side rope mounting device 8 has a support portion 81 and a rope fastening portion 82. The support portion 81 is mounted on the protruding plate portion 51 of the machine base 5. The rope fastening portion 82 is mounted on the support portion 81 at a position spaced downward from the protruding plate portion 51.

[0035] The rope fastening portion 82 has a suspension member 821 and a plurality of rope end mounting members 822.

[0036] A plurality of through-holes for rope ends (not shown) are provided in the suspension member 821. The plurality of through-holes for rope ends correspond to the plurality of second rope ends 42. Each second rope end 42 has an end rod 421. Each end rod 421 passes through the corresponding through-hole for rope ends of the suspension member 821 in the vertical direction. A threaded portion is formed on the outer peripheral surface of the end rod 421.

[0037] A plurality of rope end mountings 822 correspond to the plurality of second rope ends 42. Each rope end mounting 822 mounts the corresponding second rope end 42 to the suspension member 821. Each second rope end 42 is mounted 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 end 42 via the rope end mounting 822.

[0038] Each rope end mounting 822 has an anti-disengagement member 823 and a spring 824.

[0039] The anti-disengagement member 823 is mounted on the end rod 421 of the corresponding second rope end 42. The anti-disengagement member 823 has a plurality of nuts. The plurality of nuts in the anti-disengagement member 823 are screwed onto the end rod 421 overlapping each other. Thus, the anti-disengagement member 823 is mounted on the end rod 421 above the suspension member 821. The position of the anti-disengagement member 823 relative to the end rod 421 can be adjusted along the end rod 421 by rotating the plurality of nuts in the anti-disengagement member 823.

[0040] The spring 824 is disposed between the anti-disengagement member 823 and the suspension member 821. The anti-disengagement member 823 is locked to the suspension member 821 via the spring 824. The spring 824 receives the downward load applied to the rope 4 from the anti-disengagement member 823. Thus, the spring 824 contracts while elastically deforming between the anti-disengagement member 823 and the suspension member 821. In the rope end mounting 822, the anti-disengagement member 823 is locked to the suspension member 821 via the spring 824, thereby preventing the end rod 421 from falling downward from the suspension member 821.

[0041] The position of the second rope end 42 relative to the suspension member 821 can be adjusted along the end rod 421 by adjusting the position of the anti-disengagement member 823 relative to the end rod 421. Thus, the position of the second rope end 42 relative to the suspension member 821 can be adjusted in the vertical direction by the rope end mounting 822.

[0042] The support portion 81 has a pair of connecting members 811, a pair of first support mounting members 812, and a pair of second support mounting members 813. The first support mounting member 812 is a support mounting member that mounts the connecting member 811 to the protruding plate portion 51 of the machine base 5. The second support mounting member 813 is a support mounting member that mounts the connecting member 811 to the suspension member 821.

[0043] The pair of first support mounting members 812 and the pair of second support mounting members 813 correspond to the pair of connecting members 811. Each first support mounting member 812 mounts the corresponding connecting member 811 to the protruding plate portion 51 of the machine base 5. Each second support mounting member 813 mounts the corresponding connecting member 811 to the suspension member 821.

[0044] As Figure 3 shown, a plurality of through holes 511 are provided in the protruding plate portion 51 of the machine base 5. The pair of connecting members 811 pass through two of the plurality of through holes 511.

[0045] The connecting member 811 has a rod portion 811a and a connecting portion 811b. The rod portion 811a is arranged in 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.

[0046] The protruding plate portion 51 of the machine base 5 becomes a rod mounting target portion for mounting the rod portion 811a. Each first support mounting member 812 mounts the rod portion 811a of the corresponding connecting member 811 to the protruding plate portion 51.

[0047] The first support mounting member 812 has a plurality of nuts. The plurality of nuts in the first support mounting member 812 are screwed onto the rod portion 811a overlapping each other. Thus, the first support mounting member 812 is mounted on the rod portion 811a above the protruding plate portion 51. The position of the first support mounting member 812 relative to the rod portion 811a can be adjusted along the rod portion 811a by rotating the plurality of nuts in the first support mounting member 812.

[0048] The first support mounting member 812 is caught by the protruding plate portion 51 from above. Thus, the rod portion 811a is prevented from falling downward from the protruding plate portion 51. By the first support mounting member 812 being caught by the protruding plate portion 51, the rod portion 811a is mounted on the protruding plate portion 51.

[0049] The position of the rod portion 811a relative to the protruding plate portion 51 can be adjusted along the rod portion 811a by adjusting the position of the first support mounting member 812 relative to the rod portion 811a. Thus, the position of the rod portion 811a relative to the protruding plate portion 51 can be adjusted along the rod portion 811a by the first support mounting member 812. That is, the first support mounting member 812 becomes a support position adjusting member for adjusting the position of the rod portion 811a relative to the protruding plate portion 51.

[0050] Each second support mounting member 813 mounts the connecting portion 811b of the corresponding connecting member 811 to the suspension member 821. As a result, the suspension member 821 is located at a position spaced downward from the protruding plate portion 51.

[0051] In the present embodiment, a fastener that fastens the connecting portion 811b and the suspension member 821 is used as the second support mounting member 813. Further, in the present embodiment, each connecting portion 811b is mounted to the suspension member 821 in a manner capable of rotating about the second support mounting member 813.

[0052] Loads such as the car 2 and the counterweight 3 are always applied to each rope 4. As a result, each rope 4 elongates over time. When each rope 4 elongates, the positional relationship between the car 2 and the counterweight 3 changes. As a result, when each rope 4 elongates, the dimension between the counterweight 3 and the counterweight side buffer 14 when the car 2 stops at the uppermost floor, that is, the counterweight side overrun dimension, decreases. If the counterweight side overrun dimension is less than the specified range, for example, when the car 2 stops at the uppermost floor, there may be an adverse situation such as a collision between the counterweight 3 and the counterweight side buffer 14.

[0053] Therefore, when the counterweight side overrun dimension is less than the specified range due to the elongation of each rope 4, during maintenance and inspection of the elevator, the counterweight side overrun dimension is adjusted to converge within the specified range. The adjustment of the counterweight side overrun dimension is performed by adjusting the position of each second rope end 42 relative to the protruding plate portion 51 in the counterweight side rope mounting device 8.

[0054] When adjusting the position of each second rope end 42 relative to the protruding plate portion 51, first, the position of each first support mounting member 812 relative to each rod portion 811a is adjusted along the rod portion 811a. The adjustment of the position of the first support mounting member 812 relative to the rod portion 811a is performed by rotating a plurality of nuts in the first support mounting member 812. As a result, the position of the rope fastening portion 82 relative to the protruding plate portion 51 is adjusted, and the positions of the second rope ends 42 relative to the protruding plate portion 51 are uniformly adjusted.

[0055] After that, if necessary, the position of at least any one of the plurality of second rope ends 42 is adjusted in the vertical direction relative to the suspension member 821. When adjusting the position of the second rope end 42 relative to the suspension member 821, the position of the anti - detachment member 823 relative to the end rod 421 is adjusted along the end rod 421. The adjustment of the position of the anti - detachment member 823 relative to the end rod 421 is performed by rotating a plurality of nuts in the anti - detachment member 823. As a result, the position of the second rope end 42 relative to the suspension member 821 is adjusted. In this way, the counterweight side overrun dimension is adjusted to converge within the specified range.

[0056] In the counterweight-side rope mounting device 8 of such an elevator, the support portion 81 is mounted on the protruding plate portion 51 of the machine base 5. The rope fastening portion 82 is mounted on the support portion 81 at a position spaced downward from the protruding plate portion 51. In the rope fastening portion 82, the rope end mounting member 822 mounts the second rope end 42 to the suspension member 821. In the support portion 81, the first support mounting member 812 mounts the rod portion 811a of the connecting member 811 to the protruding plate portion 51. The position of the second rope end 42 relative to the suspension member 821 can be adjusted in the vertical direction by the rope end mounting member 822. The position of the support portion 81 relative to the protruding plate portion 51 can be adjusted along the rod portion 811a by the first support mounting member 812. Therefore, in addition to the adjustment range of the position of the second rope end 42 relative to the suspension member 821, within the length range of the rod portion 811a, the position of the second rope end 42 relative to the protruding plate portion 51 can also be adjusted. Thus, even when the elongation dimension of each rope 4 exceeds the adjustment range of the position of the second rope end 42 relative to the suspension member 821, the position of the second rope end 42 relative to the protruding plate portion 51 can be adjusted according to the elongation dimension of each rope 4. Therefore, the position of the second rope end 42 relative to the protruding plate portion 51 can be adjusted more reliably, and the counterweight-side overrun dimension can be adjusted more reliably.

[0057] Here, when each rope 4 elongates and the counterweight-side overrun dimension needs to be adjusted, the counterweight-side overrun dimension can also be adjusted by a shortening operation of cutting each rope 4 to shorten the actual length of each rope 4. However, the shortening operation takes more time than the adjustment operation of the position of the second rope end 42 relative to the protruding plate portion 51.

[0058] In the present embodiment, since the adjustment range of the position of the second rope end 42 relative to the protruding plate portion 51 is expanded, the shortening operation can be eliminated or the frequency of the shortening operation can be reduced. Thereby, the counterweight-side overrun dimension can be easily adjusted, and the cost of maintenance and repair work of the elevator can be reduced. In addition, the long life of the elevator can also be achieved.

[0059] In addition, since a plurality of second rope ends 42 are mounted on the rope fastening portion 82, by adjusting the position of the support portion 81 relative to the protruding plate portion 51, the positions of the plurality of second rope ends 42 can be uniformly adjusted relative to the protruding plate portion 51. Thereby, the positions of the respective second rope ends 42 relative to the protruding plate portion 51 can be easily adjusted, and the adjustment time of the positions of the respective second rope ends 42 relative to the protruding plate portion 51 can be shortened.

[0060] In addition, in the counterweight-side rope installation device 8, the support portion 81 is installed on the machine base 5. The machine base 5 is supported by the support structure 15. Therefore, the machine base 5 can be used to support the load applied to the counterweight-side rope installation device 8. As a result, it is not necessary to provide a mounting table for supporting the counterweight-side rope installation device 8 below the machine base 5, and the counterweight-side rope installation device 8 can be arranged below the machine base 5 while avoiding the space where the respective counterweight guide rails 12 are provided. Therefore, even in a state where the respective counterweight guide rails 12 are not provided, the counterweight-side rope installation device 8 can be arranged below the machine base 5, and a suspended scaffolding can be suspended from the counterweight-side rope installation device 8. Thus, a scaffolding-free construction method in which an operator works on the suspended scaffolding suspended from the counterweight-side rope installation device 8, that is, a WOS construction method, can be adopted as a construction method for installing an elevator. Therefore, for example, the counterweight guide rails 12 and the like can be provided by the WOS construction method. As a result, the burden of the elevator installation work can be reduced. In addition, the cost required for the elevator installation work can also be reduced.

[0061] In addition, in the first embodiment, the machine base 5 is supported by the support structure 15. However, the machine base 5 may also be supported by the respective car guide rails 11 and the respective counterweight guide rails 12. In this way, the position of the second rope end 42 can also be adjusted relative to the protruding plate portion 51 within a range exceeding the adjustment range of the position of the second rope end 42 relative to the suspension member 821. Therefore, the position of the second rope end 42 relative to the protruding plate portion 51 can be adjusted more reliably. In addition, in this way, the support structure 15 can be removed, and the degree of freedom in the design of the space in the hoistway 1 can be increased.

[0062] In addition, in the first embodiment, the connecting portion 811b of the connecting member 811 is installed on the suspension member 821. However, the connecting portion 811b of the connecting member 811 may be removed, and the rod portion 811a of the connecting member 811 may be installed on the suspension member 821. That is, the rod installation target portion for installing the rod portion 811a may be the suspension member 821. In this case, a through hole for the rod is provided in the suspension member 821 for the rod portion 811a to pass through. In addition, in this case, the rod portion 811a is installed on the suspension member 821 by the second support mounting member 813. And, in this case, the second support mounting member 813 has a plurality of nuts screwed into the rod portion 811a. In addition, in this case, the position of the rod portion 811a relative to the suspension member 821 is adjusted by rotating the plurality of nuts in the second support mounting member 813. As a result, the second support mounting member 813 becomes a support position adjustment member for adjusting the position of the rod portion 811a relative to the suspension member 821. In this way, not only by adjusting the position of the rod portion 811a relative to the protruding plate portion 51, but also by adjusting the position of the rod portion 811a relative to the suspension member 821, the position of the second rope end 42 relative to the protruding plate portion 51 can be adjusted.

[0063] Embodiment 2

[0064] Figure 4 This is a front view of the counterweight side rope mounting device of the elevator according to Embodiment 2. A plurality of building beams 16 are horizontally arranged at the top of the hoistway 1 as fixing parts. The plurality of building beams 16 are part of the main body of the building, that is, the building main body. The plurality of building beams 16 are exposed in the hoistway 1. The plurality of building beams 16 are arranged at a position higher than the machine base 5.

[0065] 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 observing the building beam 16 along the length direction of the building beam 16, 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. The pair of upper horizontal plate portions 163 horizontally protrude from the upper end portion of the vertical plate portion 161 in opposite directions. As the building beam 16, an H-shaped steel is used. Therefore, the cross-sectional shape of the building beam 16 becomes an H shape by the vertical plate portion 161, the pair of lower horizontal plate portions 162, and the pair of upper horizontal plate portions 163.

[0066] The counterweight side rope mounting device 8 has a support portion 81 and a rope fastening portion 82.

[0067] The rope fastening portion 82 has a suspension member 821 and a plurality of rope end mounting members 822.

[0068] The suspension member 821 is horizontally arranged at a position lower than the machine base 5. A plurality of through holes for rope ends (not shown) and two through holes for rods (not shown) are provided in the suspension member 821. In the present embodiment, the two through holes for rods are located at positions separated from each other in the horizontal direction, and the plurality of through holes for rope ends are located between the two through holes for rods.

[0069] The end rod 421 of the second rope end 42 passes through each through hole for rope ends in the vertical direction. Each rope end mounting member 822 mounts the corresponding second rope end 42 to the suspension member 821. The structure of the rope end mounting member 822 is the same as that of Embodiment 1. Thus, the position of the second rope end 42 relative to the suspension member 821 can be adjusted in the vertical direction by the rope end mounting member 822.

[0070] The support portion 81 has a pair of connecting members 811, a pair of first support mounting members 812, and a pair of second support mounting members 813. The pair of connecting members 811 are mounted on two different building beams 16 among the plurality of building beams 16.

[0071] A pair of first support mounting members 812 corresponds to a pair of connecting members 811. Each first support mounting member 812 mounts the corresponding connecting member 811 to the building beam 16. A pair of second support mounting members 813 corresponds to a pair of connecting members 811. Each second support mounting member 813 mounts the corresponding connecting member 811 to the suspension member 821.

[0072] 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 in 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.

[0073] The first support mounting member 812 mounts 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 holding member that is caught and held by a pair of lower horizontal plate portions 162 in the building beam 16 is used as the first support mounting member 812. In the present embodiment, by holding the first support mounting member 812 on the pair of lower horizontal plate portions 162, the connecting portion 811b of the connecting member 811 is mounted to the building beam 16.

[0074] A pair of connecting members 811 hang downward from two different building beams 16. Thus, the lower end portion of the rod portion 811a in each connecting member 811 is located below the base 5. Each rod portion 811a passes through two through holes for the rod in the suspension member 821.

[0075] The suspension member 821 becomes a rod mounting target portion for mounting the rod portion 811a. Each second support mounting member 813 mounts the rod portion 811a of the corresponding connecting member 811 to the suspension member 821. Thus, the suspension member 821 is located at a position away from each building beam 16 downward. In the present embodiment, the suspension member 821 is located below the base 5.

[0076] The second support mounting member 813 has a plurality of nuts. The plurality of nuts in the second support mounting member 813 are screwed into the rod portion 811a overlapping each other. The second support mounting member 813 supports the suspension member 821 from below. Thus, the rod portion 811a is prevented from coming off upward from the suspension member 821.

[0077] The position of the second support mounting member 813 relative to the rod portion 811a can be adjusted along the rod portion 811a by rotating a plurality of nuts in the second support mounting member 813. The position of the rod portion 811a relative to the suspension member 821 can be adjusted along the rod portion 811a by adjusting the position of the second support mounting member 813 relative to the rod portion 811a. Thus, the second support mounting member 813 becomes a support position adjuster for adjusting the position of the rod portion 811a relative to the suspension member 821. Therefore, the position of the rope fastening portion 82 relative to the building beam 16 can be adjusted along the rod portion 811a by the second support mounting member 813. Other structures are the same as those in Embodiment 1.

[0078] The adjustment of the counterweight side overrun dimension is performed by adjusting the position of each second rope end 42 relative to the building beam 16 in the counterweight side rope mounting device 8. When adjusting the position of each second rope end 42 relative to the building beam 16, first, the position of each second support mounting member 813 relative to each rod portion 811a is adjusted along the rod portion 811a. The adjustment of the position of the second support mounting member 813 relative to the rod portion 811a is performed by rotating a plurality of nuts in the second support mounting member 813. Thus, the position of the rope fastening portion 82 relative to the building beam 16 is adjusted, and the positions of the respective second rope ends 42 relative to the building beam 16 are uniformly adjusted.

[0079] After that, if necessary, the position of at least any one of the plurality of second rope ends 42 is adjusted in the vertical direction relative to the suspension member 821. The steps for adjusting the position of the second rope end 42 relative to the suspension member 821 are the same as those in Embodiment 1. In this way, the counterweight side overrun dimension is adjusted to converge within a specified range.

[0080] In the counterweight side rope mounting device 8 of such an elevator, the support portion 81 is mounted on the building beam 16. Therefore, the building beam 16 can be used to support the load applied to the counterweight side rope mounting device 8. Thus, 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, a reduction in the cost of the entire elevator can be achieved.

[0081] In addition, in Embodiment 2, the machine base 5 is supported by the support structure 15. However, the machine base 5 can also be supported by each car guide rail 11 and each counterweight guide rail 12. In this way, the support structure 15 can be removed, and the degree of freedom in the design of the space in the hoistway 1 can be improved. In addition, 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 counterweight guide rail 12, the degree of enlargement of each car guide rail 11 and each counterweight guide rail 12 can be reduced.

[0082] In addition, 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 removed, 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 for attaching the rod portion 811a may be the building beam 16. In this case, a through-hole for the rod is provided in the lower horizontal plate portion 162 of the building beam 16 for the rod portion 811a to pass through. In addition, 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 attachment member 812. And, in this case, the first support attachment member 812 has a plurality of nuts screwed into the rod portion 811a. In addition, in this case, the position of the rod portion 811a relative to the building beam 16 is adjusted by rotating the plurality of nuts in the first support attachment member 812. Thus, the first support attachment member 812 becomes a support position adjustment member for adjusting the position of the rod portion 811a relative to the building beam 16. In this way, not only by adjusting the position of the rod portion 811a relative to the suspension member 821, but also by adjusting the position of the rod portion 811a relative to the building beam 16, the position of the second rope end 42 relative to the building beam 16 can be adjusted.

[0083] As described above, the structures shown in the above embodiments represent an example of the content of the present disclosure. The embodiments can be combined with other known technologies. Within the scope not departing from the gist of the present disclosure, a part of the structure of the embodiments can be omitted or changed.

[0084] Reference Numeral Explanation

[0085] 1: hoistway, 2: car (lifting body), 3: counterweight (lifting body), 5: machine base (fixed portion), 8: counterweight side rope attachment device (rope attachment device), 15: support structure, 16: building beam (fixed portion), 42: second rope end (rope end), 81: support portion, 82: rope fastening portion, 811: connecting member, 811a: rod portion, 812: first support attachment member, 813: second support attachment member, 821: suspension member, 822: rope end attachment member.

Claims

1. A rope installation device for an elevator, comprising: A support portion mounted on a fixing portion disposed at an upper portion of the hoistway; as well as a rope fastening portion mounted on the support portion at a position spaced downward from the fixing portion, The rope fastening portion comprises: a suspension component; and a rope end mounting member for mounting the rope end, which is an end portion of a rope for suspending the lifting body, to the suspending member in a state where the rope end, which is an end portion of the rope, is moved downward from the fixing portion. The support portion includes: a connecting member; a first supporting fixture for mounting the connecting member on the fixing portion; and a second supporting fixture for mounting the connecting member on the suspending member. The connecting member has a rod portion arranged along the up-down direction, At least one of the fixing portion and the suspending member serves as a rod mounting target portion to which the rod portion is mounted. Of the first support fixture and the second support fixture, the support fixture that mounts the rod portion to the rod mounting target portion serves as a support position adjuster. The position of the rope end relative to the suspension member can be adjusted in the vertical direction by the rope end mounting member. The position of the support portion relative to the rod mounting target portion can be adjusted along the rod portion by the support position adjuster.

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

3. The rope installation device for an elevator according to claim 1, wherein: The fixing portion is a part of a base that bears a load of a driving device, and the driving device generates a driving force to move the lifting body. The machine base is supported by a supporting structure fixed in the hoistway.

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