JP4980442B2 - Elevator counterweight - Google Patents

Description

  The present invention relates to a counterweight of an elevator in which a car and a counterweight are lifted and lowered in a hoistway.

  In the conventional elevator apparatus, a hoisting machine may be installed in the upper part in a hoistway. A main rope for suspending a car and a counterweight is wound around the sheave of the hoist. The car and the counterweight are lifted and lowered so as to pass each other in the hoistway by driving the hoist (see, for example, Patent Document 1).

JP 2003-95556 A

  However, to reduce the horizontal cross-sectional area of the hoistway while securing the floor area of the car, if the plane dimension of the counterweight is reduced, the dimension in the height direction of the counterweight increases, and the top floor The dimension from the height to the hoistway ceiling (overhead dimension) and the dimension from the lowest floor height to the hoistway bottom (pit dimension) become large. Conversely, in order to reduce the overhead dimension and the pit dimension, it is necessary to secure a certain flat area of the counterweight, and the horizontal sectional area of the hoistway becomes large. Thus, in the conventional elevator apparatus, it was impossible to achieve both reduction in the horizontal sectional area of the hoistway and reduction in overhead dimensions and pit dimensions.

  The present invention has been made in order to solve the above-described problems, and is an elevator weight that can reduce the size of the space in the hoistway while securing the floor area of the car. The purpose is to obtain.

  An elevator counterweight according to the present invention includes a first weight element, a normal position protruding from the first weight element in the height direction, and a position closer to the first weight element than the normal position in the height direction. And a second weight element displaceable between the flat position protruding from the first weight element with respect to the horizontal position in the horizontal direction.

  In the elevator counterweight according to the present invention, the second weight element protrudes from the first weight element in the height direction, and is positioned closer to the first weight element than the normal position in the height direction. In the horizontal direction, it can be displaced between the flat position projecting from the first weight element rather than the normal position, so that the car and the counterweight do not pass each other near the end of the hoistway. The height of the counterweight can be reduced by displacing the second weight element toward the lift area side of the car, and the second weight element is displaced outside the lift area of the car at the middle part of the hoistway Thus, the car and the counterweight can pass each other without increasing the horizontal cross-sectional area of the hoistway. Therefore, the size of the hoistway space can be reduced while securing the floor area of the car.

1 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 1 of the present invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a schematic diagram which shows a state when the counterweight of FIG. 1 approaches the lower end part of the hoistway. It is a perspective view which shows the counterweight of FIG. It is a perspective view which shows the counterweight when it sees from the direction of the arrow A of FIG. It is a perspective view which shows the photoelectric sensor of FIG. It is a longitudinal cross-sectional view which shows an elevator apparatus when the counterweight of FIG. 1 exists in the lower end part vicinity of a hoistway. It is a perspective view which shows the other example of the detection sensor of FIG. It is a longitudinal cross-sectional view which shows the elevator apparatus which has arrange | positioned the suspension point of the counterweight of FIG. 7 on the vertical line which passes through the gravity center of each weight element. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 2 of this invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a side view which shows the counterweight of FIG. It is a perspective view which shows the counterweight of FIG. FIG. 13 is a side view showing a counterweight when the upper weight and the lower weight in FIG. 12 are in a flat position. It is a perspective view which shows the other example of the counterweight of FIG. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 3 of this invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a side view which shows the counterweight of FIG. It is a side view which shows a counterweight when the 1st-4th weight of FIG. 18 exists in a flat position. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 4 of this invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a front view which shows the elevator apparatus when it sees from the cage | basket | car side of FIG. It is a side view which shows the counterweight of FIG. FIG. 24 is a side view showing a counterweight when the upper weight and the lower weight in FIG. 23 are in a flat position. It is a perspective view which shows the counterweight of FIG. It is a front view which shows the counterweight of FIG. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 5 of this invention. It is a cross-sectional view showing the elevator apparatus of FIG. It is a side view which shows the counterweight of FIG. It is a perspective view which shows the counterweight of FIG. FIG. 30 is a side view showing a counterweight when the upper weight and the lower weight are in a flat position. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 6 of this invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a side view which shows the counterweight of FIG. It is a side view which shows the counterweight when the weight of the 1st step-the 9th step of FIG. 34 exists in a flat position. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 7 of this invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a side view which shows the counterweight of FIG. It is a side view which shows a state when the counterweight of FIG. 38 exists in the lower end part vicinity in a hoistway. It is a longitudinal cross-sectional view which shows the elevator apparatus by Embodiment 8 of this invention. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a perspective view which shows the counterweight of FIG. It is a perspective view which shows the counterweight when it sees from the direction of arrow B of FIG. It is a longitudinal cross-sectional view which shows an elevator apparatus when the counterweight of FIG. 40 exists in the upper end part of a hoistway. It is a longitudinal cross-sectional view which shows an elevator apparatus when the counterweight of FIG. 40 exists in the lower end part of a hoistway. It is a cross-sectional view which shows the elevator apparatus of FIG. It is a longitudinal cross-sectional view which shows the counterweight of FIG. It is a longitudinal cross-sectional view which shows the counterweight of FIG.

Embodiment 1 FIG.
1 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing the elevator apparatus of FIG. In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed in a hoistway 1. A car 4 is arranged between the car guide rails 2, and a counterweight 5 is arranged between the counterweight guide rails 3. The car 4 is guided by the car guide rail 2, and the counterweight 5 is guided by the counterweight guide rail 3 (FIG. 2).

  A hoisting machine 6 as a driving device is provided in the upper part of the hoistway 1. The hoisting machine 6 includes a drive device body 7 including a motor and a drive sheave 8 rotated by the drive device body 7. Further, a baffle 9 is provided in the vicinity of the hoisting machine 6 in the upper part of the hoistway 1. A plurality of main ropes 10 are wound around the drive sheave 8 and the deflecting wheel 9. The car 4 and the counterweight 5 are suspended in the hoistway 1 by the main ropes 10. The car 4 and the counterweight 5 are moved up and down in the hoistway 1 by driving the hoisting machine 6.

  The car 4 has a car room 12 provided with a car doorway 11 and a car frame 13 surrounding the car room 12. A pair of car doors 14 for opening and closing the car doorway 11 are mounted in the car room 12. The main rope 10 is connected to the upper part of the car frame 13. A control panel 40 for controlling the operation of the elevator is installed in the hoistway 1.

  FIG. 3 is a schematic diagram showing a state when the counterweight 5 of FIG. 1 approaches the lower end of the hoistway 1. 4 is a perspective view showing the counterweight 5 in FIG. 3, and FIG. 5 is a perspective view showing the counterweight 5 when viewed from the direction of arrow A in FIG. FIG. 4 is a view showing the counterweight 5 when viewed from the car 4 side. In the figure, a pair of guide rails 15 having a U-shaped horizontal cross section inclined with respect to each counterweight guide rail 3 are installed at the lower end portion (terminal portion) in the hoistway 1. Each guide rail 15 is disposed so that the U-shaped opening portions face each other. Further, each guide rail 15 is disposed on the lifting section side of the car 4 with respect to each counterweight guide rail 3. Further, the guide rails 15 are inclined with respect to the counterweight guide rails 3 so as to be separated from the counterweight guide rails 3 as they approach the lower end of the hoistway 1.

  Between the counterweight guide rails 3, the suspension engagement body 16 to which the main rope 10 is connected, the upper engagement body 17 provided above the suspension engagement body 16, and the suspension engagement body 16 are provided below. A lower engagement body 18 is disposed. The suspension engagement body 16, the upper engagement body 17, and the lower engagement body 18 are guided by the respective counterweight guide rails 3. Further, the upper engagement body 17 and the lower engagement body 18 can be displaced in a direction in which the upper engagement body 17 and the lower engagement body 18 are in contact with or separated from the suspension engagement body 16.

  The suspension engaging bodies 16 are provided at both ends of a suspension member 19 and a suspension member 17 that are horizontally connected between the respective balance weight guide rails 3 to which the main rope 10 is connected, and each of the balance weight guide rails 3. And a pair of guide shoes 20 which are first engaging portions that engage with each other.

  The upper engagement body 17 is provided with an upper horizontal member 22 which is a connecting portion provided with a through hole 21 through which the main rope 10 is passed and extends horizontally between the counterweight guide rails 3, and both ends of the upper horizontal member 22. And a pair of guide shoes 23 which are first engaging portions that respectively engage with the counterweight guide rails 3.

  The lower engagement body 18 is provided at both ends of the lower horizontal member 24 and the lower horizontal member 24 that are horizontally connected between the counterweight guide rails 3 and engages with the counterweight guide rails 3. And a pair of guide shoes 25 which are first engaging portions.

  That is, the suspension engagement body 16, the upper engagement body 17, and the lower engagement body 18 extend in the width direction of the counterweight 5 and engage with the counterweight guide rail 3.

  A pair of weight elements (unit weights) 27 and 28 rotatably connected to a common connecting shaft (connecting portion) 26 extending horizontally are respectively provided at the upper end portion of the suspension member 19 and the lower end portion of the upper horizontal member 22. It is pivotally connected. The weight element 27 is rotatable about a horizontal axis along the suspension member 19, and the weight element 28 is rotatable about a horizontal axis along the upper horizontal member 22.

  A pair of weight elements (unit weights) 30 and 31 that are rotatably connected to a common connecting shaft (connecting part) 29 extending horizontally are respectively provided at the lower end part of the suspension member 19 and the upper end part of the lower horizontal member 24. It is pivotally connected. The weight element 30 is rotatable about a horizontal axis along the suspension member 19, and the weight element 31 is rotatable about a horizontal axis along the lower horizontal member 24.

  That is, the weight elements 28, 27, 30 and 31 are connected to each other by the connecting shaft 26, the suspension member 19 and the connecting shaft 29 so as to be rotatable. Moreover, the cross-sectional shape perpendicular | vertical to each horizontal axis of the weight elements 27-31 is made into the shape from which each dimension of a vertical direction and a horizontal direction mutually differs (a rectangle in this example).

  A pair of displacement link structures 32 that are second engaging portions guided by the respective guide rails 15 are provided at both ends of each of the connecting shaft 26 and the connecting shaft 29. Each displacement link structure 32 has an engagement piece 33 engaged with the guide rail 15, one end portion rotatably connected to the engagement piece 33, and the other end portion rotatable to the connection shaft 26. The upper link 34 is connected, and one end is rotatably connected to the engagement piece 33, and the other end is rotatably connected to the connecting shaft 29.

  The counterweight 5 includes a suspension engagement body 16, an upper engagement body 17, a lower engagement body 18, weight elements 27 to 31, and a displacement link structure 32.

  The weight elements 27 to 31 are guided by the suspension engagement body 16, the upper engagement body 17 and the lower engagement body 18 by the counterweight guide rails 3, and by the guides of the displacement link structures 32 by the guide rails 15. It is designed to rotate. Further, the weight elements 27 to 31 are rotatable in a vertical projection plane of the hoistway 1 between a normal position located outside the area of the car 4 and a flat position partially overlapping the area of the car 4. (Fig. 2).

  The weight elements 27 to 31 are displaced to a normal position by rotating a line along the vertical direction of the rectangular cross section in a direction parallel to the vertical direction, and the line along the vertical direction of the rectangular cross section is vertical. It is displaced to a flat position by being rotated in a direction perpendicular to the direction. That is, in the vertical projection plane of the hoistway 1, the area of the counterweight 5 when the weight elements 27 to 31 are in the flat position is the counterweight 5 when the weight elements 27 to 31 are in the normal position. The height of the counterweight 5 when the weight elements 27 to 31 are in the normal position is larger than the height of the counterweight 5 when the weight elements 27 to 31 are in the flat position. It is getting bigger.

  That is, the counterweight 5 has a dimension in the thickness direction in the vertical projection plane of the hoistway 1 between the inner wall of the hoistway 1 and the car 4 when the weight elements 27 to 31 are in the normal position. Smaller than that of the car 4 and is in a normal state. Further, the counterweight has a hoistway in which the dimension in the height direction is smaller than the normal state and the dimension in the thickness direction is larger than the normal state when the weight elements 27 to 31 are in the flat position. A flat state partially overlaps the area of the car 4 in one vertical projection plane.

  In addition, as shown in FIG. 1, at the height at which the car 4 and the counterweight 5 in the hoistway 1 pass each other, a photoelectric sensor, which is a detection sensor that detects whether or not the weight elements 27 to 31 are displaced to the normal position. A sensor 41 is installed. The photoelectric sensor 41 is electrically connected to the control panel 40.

  FIG. 6 is a perspective view showing the photoelectric sensor 41 of FIG. In the figure, the photoelectric sensor 41 has a projector 42 and a light receiver 43 that receives light from the projector 42. The optical axis 44 between the projector 42 and the light receiver 43 is located in the gap between the car 4 and the counterweight 5 when the weight elements 27 to 31 are in the normal position in the vertical projection plane of the hoistway 1. And, when the weight elements 27 to 31 are in the flat position, they overlap with the area of the counterweight 5.

  The photoelectric sensor 41 detects the displacement of the weight elements 27 to 31 to the normal position when the light receiver 43 receives the light from the projector 42, and moves the weight elements 27 to 31 to the normal position when the light sensor 43 does not receive light. It is detected that the displacement is not completed. The photoelectric sensor 41 outputs a stop signal for stopping the operation of the elevator to the control panel 40 when detecting that the displacement of the weight elements 27 to 31 to the normal position is not completed. .

Next, the operation will be described.
When the car 4 and the counterweight 5 are lifted up and down the intermediate part in the hoistway 1 where the guide rail 15 is not installed, the weight elements 27 to 31 are in the normal position, as shown in FIG. The counterweights 5 are raised and lowered while passing each other.

  When the car 4 is raised and the counterweight 5 approaches the lower end, the engaging piece 33 is engaged with the guide rail 15. Thereafter, as the counterweight 5 is lowered, the engaging piece 33 is guided by the guide rail 15 and is displaced toward the elevator section side of the car 4. As a result, the weight elements 27 to 31 are pulled toward the lift section side of the car 4 and rotated. At this time, the upper engagement body 17 and the lower engagement body 18 are displaced in a direction approaching the suspension engagement body 16. Thereafter, as shown in FIG. 7, the car 4 is landed on the uppermost floor, and the weight elements 27 to 31 are displaced to the flat position.

  When the car 4 descends from the top floor, the counterweight 5 is raised, and the weight elements 27 to 31 are displaced from the flat position to the normal position by the reverse operation.

  When the photoelectric sensor 41 detects that the weight elements 27 to 31 are not completely displaced to the normal position, a stop signal is output from the photoelectric sensor 41 to the control panel 40. The operation of the elevator is stopped by the control panel 40 by the input of the stop signal of the control panel 40.

  In such an elevator apparatus, the counterweight 5 has a dimension in the thickness direction in the vertical projection plane of the hoistway 1 that is smaller than the dimension between the inner wall of the hoistway 1 and the car 4. The area of the car 4 in the vertical projection plane of the hoistway 1 as well as the normal state arranged outside, the dimension in the height direction is smaller than the normal state, the dimension in the thickness direction is larger than the normal state The height of the counterweight 5 is reduced in the vicinity of the end portion of the hoistway 1 where the car 4 and the counterweight 5 do not pass each other. It is possible to reduce the dimension in the thickness direction at the intermediate portion of the hoistway 1 so that the car 4 and the counterweight 5 can pass each other without enlarging the horizontal sectional area of the hoistway 1. Therefore, the size of the space of the hoistway 1 can be reduced while the floor area of the car 4 is secured.

  In the elevator counterweight 5, the weight elements 27, 28, 30, and 31 are rotatably connected to each other, so that the weight element 27 is moved to the lift area side of the car 4 in the vicinity of the end portion of the hoistway 1. By rotating ~ 31, the height of the counterweight 5 can be reduced, and by rotating the weight elements 27-31 outside the lifting area of the car 4 at the middle part of the hoistway 1, The car 4 and the counterweight 5 can be passed with each other without increasing the horizontal cross-sectional area of the hoistway 1. Therefore, the size of the space of the hoistway 1 can be reduced while the floor area of the car 4 is secured.

  Further, since the pair of weight elements 27 and 28 are rotatably connected to the common connecting shaft 26, the two weight elements 27 and 28 can be rotated by the displacement of one connecting shaft 26. Can simplify the structure.

  The suspension member 19, the upper horizontal member 22, and the lower horizontal member 24 are provided with guide shoes 20, 23, 25 guided by the counterweight guide rail 3, and the connection shaft 26 and the connection shaft 29 are guided by The displacement link structure 32 guided by the rail 15 is provided, and the lower weight elements 30, 31 can be lifted by the weight of the upper weight elements 27, 28 around the suspension member 19, Without using a drive device for rotating the weight elements 27 to 31, the weight elements 27 to 31 can be easily rotated only by raising and lowering the counterweight 5.

  Further, in the hoistway 1, the counterweight guide rail 3 that guides the guide shoes 20, 23, and 25 and the displacement link structure 32 are guided, and the counterweight guide as the lower end of the hoistway 1 is approached. Since the guide rail 15 inclined with respect to the counterweight guide rail 3 is provided so as to be separated from the rail 3, the suspension member 19, the upper horizontal member 22, the lower horizontal member 24, the displacement link structure 32, and The distance can be changed with a simple configuration, and the counterweight 5 can be folded or opened and extended. Thereby, the installation space of the apparatus for rotating the weight elements 27-31 can be made small, and the expansion of the space in the hoistway 1 can be prevented.

  Further, in the hoistway 1, there is provided a photoelectric sensor 41 for detecting whether or not the weight elements 27 to 31 are displaced to the normal positions at a height at which the car 4 and the counterweight 5 pass each other. 4 and the counterweight 5 can be prevented from colliding, and the car 4 and the counterweight 5 can be prevented from being damaged.

  In the above example, the photoelectric sensor 41 is used as the detection sensor. However, as shown in FIG. 8, a contact-type wire that detects the displacement of the wire rope 46, which is a thin line stretched between a pair of support portions. A switch 45 may be used. In this case, a micro switch 47 in which one end portion of the wire rope 46 is connected to one support portion is provided. Further, the wire rope 46 is located in the gap between the car 4 and the counterweight 5 when the weight elements 27 to 31 are in the normal position in the vertical projection plane of the hoistway 1, and the weight element 27. When 31 is in the flat position, it is stretched between the support portions so as to overlap the area of the counterweight 5.

  In the above example, the suspension member 19 to which the main rope 10 is connected is provided at the end of the weight elements 27, 30. That is, the suspension point of the weight elements 27, 30 by the main rope 10 is the weight element 27, However, as shown in FIG. 9, the main rope 10 may be connected to the weight element so that the suspension point of the weight element is at the center of gravity in the vertical direction. In this case, all the guide shoes are arranged as first engaging portions on the horizontal axis passing through the center of gravity of each weight element, and are provided so as to be rotatable with respect to the weight element. Each weight element is rotated around a horizontal axis passing through the center of gravity. In this way, the burden on the counterweight guide rail 3 and the guide rail 15 can be reduced.

Embodiment 2. FIG.
FIG. 10 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 2 of the present invention. FIG. 11 is a cross-sectional view showing the elevator apparatus of FIG. In this example, a counterweight 51 is disposed between the counterweight guide rails 3. The counterweight 51 and the car 4 are moved up and down in the hoistway 1 by driving the hoisting machine 6.

  The counterweight 51 includes a weight frame 52 to which the main rope 10 is connected, and an upper weight 53 and a lower weight 54 that are two weight elements mounted on the weight frame 52. The upper weight 53 and the lower weight 54 are a flat position (a two-dot broken line in FIG. 10) partially overlapping the area of the car 4 in the vertical projection plane of the hoistway 1 and a normal position located outside the area of the car 4. (The solid line in FIG. 10) is rotatable with respect to the weight frame 52. Further, the upper weight 53 and the lower weight 54 are rotated to the flat position when near the lower end portion of the hoistway 1, and when the car 4 and the counterweight 51 are in the middle portion of the hoistway 1 passing each other. It is rotated to the normal position. The weight frame 52 is disposed outside the area of the car 4 in the vertical projection plane of the hoistway 1.

  12 is a side view showing the counterweight 51 of FIG. 10, and FIG. 13 is a perspective view showing the counterweight 51 of FIG. FIG. 14 is a side view showing the counterweight 51 when the upper weight 53 and the lower weight 54 in FIG. 12 are in the flat position. In the figure, the weight frame 52 includes a horizontal portion 55 to which the main rope 10 is connected, a pair of side portions 56 extending downward from both ends of the horizontal portion 55, and ends of the side portions 56 on the side away from the car 4. And a back surface part 57 provided between the parts.

  In the weight frame 52, the upper weight rotating shaft 58 that is a horizontal axis extending horizontally between the side surface portions 56, and the upper weight rotating shaft 58 is disposed below the upper weight rotating shaft 58. A pivot shaft 59 for the lower weight, which is a horizontal shaft extending in parallel, is fixed. An upper weight 53 is rotatably provided on the upper weight rotating shaft 5, and a lower weight 54 is rotatably provided on the lower weight rotating shaft 59.

  A weight drive device 60 for rotating the upper weight 53 and the lower weight 54 is mounted on the weight frame 52. The weight driving device 60 is disposed in the upper part inside the weight frame 52. In this example, the weight driving device 60 is fixed to the upper portion of the one side surface portion 56. The weight driving device 60 includes a weight driving device main body 61 fixed to the weight frame 52 and a driving sprocket 62 rotated by the weight driving device main body 61. In the hoistway 1, a power feeding cable (not shown) for supplying driving power to the weight driving device 60 is provided.

  The cross-sectional shape perpendicular to the upper weight rotation shaft 58 of the upper weight 53 and the cross-sectional shape perpendicular to the lower weight rotation shaft 59 of the lower weight 54 are a long axis (longitudinal dimension) and a short axis (lateral dimension), respectively. It has an oval shape (oval shape). The upper weight rotating shaft 58 is provided at one end of the upper weight 53 in the longitudinal direction of the cross section. The lower weight turning shaft 59 is provided at one end of the lower weight 54 in the longitudinal direction of the cross section.

  A chain 63 is wound around the drive sprocket 62. The other end of the upper weight 53 in the cross-sectional major axis direction is connected to one end of the chain 63, and the other end of the lower weight 54 in the cross-sectional major axis direction is connected to the other end of the chain 63. .

  An upper guide sprocket 64 around which a chain 63 is wound is disposed on the back surface 57 side of the weight driving device 60. A lower guide sprocket 65 around which the chain 63 is wound is disposed below the upper guide sprocket 64. The upper guide sprocket 64 and the lower guide sprocket 65 are rotatably provided on one side surface portion 56, respectively.

  That is, the chain 63 is wound around the drive sprocket 62, the upper guide sprocket 64, and the lower guide sprocket 65 in this order from one end connected to the upper weight 53 to the other end connected to the lower weight 54.

  The other end of the upper weight 53 in the longitudinal direction of the cross section is positioned above the upper weight rotating shaft 58 when the upper weight 53 is in the normal position, and the upper weight 53 is positioned when the upper weight 53 is in the flat position. The rotary shaft 58 is positioned on the lift area side of the car 4. The other end of the lower weight 54 in the longitudinal direction of the cross section is located below the lower weight rotating shaft 59 when the lower weight 54 is in the normal position, and when the lower weight 54 is in the flat position. The lower weight rotating shaft 59 is positioned on the lift area side of the car 4. The upper weight 53 and the lower weight 54 are rotated between the normal position and the flat position by the movement of the chain 63 by driving the weight driving device 60.

  A guide shoe 66 that is guided by engagement with each counterweight guide rail 3 is provided at the upper end and the lower end of each side surface portion 56. Further, a limit switch (not shown) for starting the rotation of the upper weight 53 and the lower weight 54 is provided in the hoistway 1. The limit switch is electrically connected to the weight driving device 60. Other configurations are the same as those in the first embodiment.

Next, the operation will be described.
When the car 4 and the counterweight 5 are moved up and down in the middle portion of the hoistway 1, the upper weight 53 and the lower weight 54 are in the normal positions, and the car 4 and the counterweight 51 are raised and lowered by passing each other ( Solid line in FIG. 10).

  When the car 4 is raised and the counterweight 51 approaches the lower end, the limit switch is operated by the counterweight 51 and the weight driving device 60 is driven. As a result, the chain 63 is moved, the other end portion of the upper weight 53 is brought down to the lift region side of the car 4 by its own weight, and the other end portion of the lower weight 54 is pulled up to the lift region side of the car 4. As a result, the upper weight 53 and the lower weight 54 are rotated and displaced to the flat position.

  When the counterweight 51 is raised, the limit switch is operated by the counterweight 51, and the upper weight 53 and the lower weight 54 are displaced from the flat position to the normal position by the reverse operation.

  In such an elevator balancing weight 51, the upper weight 53 is rotatable about the upper weight rotation shaft 58 extending in the width direction, and the lower weight is centered on the lower weight rotation shaft 59 extending in the width direction. 54 is pivotable, so that the height of the counterweight 51 is reduced by rotating the upper weight 53 and the lower weight 54 toward the lift area side of the car 4 near the end of the hoistway 1. By rotating the upper weight 53 and the lower weight 54 outside the hoisting area of the car 4 in the middle part of the hoistway 1, the car 4 and fishing can be performed without enlarging the horizontal sectional area of the hoistway 1. The weights 51 can pass each other. Therefore, the size of the space of the hoistway 1 can be reduced while the floor area of the car 4 is secured.

  In addition, since the weight driving device 60 for rotating the upper weight 53 and the lower weight 54 is mounted on the weight frame 52, the upper weight 53 and the lower weight 54 can be automatically rotated. Further, it is not necessary to provide a rail or the like for rotating the lower weight 54 in the hoistway 1. Therefore, the size of the space in the hoistway 1 can be further reduced.

  Further, the other end of each of the upper weight 53 and the lower weight 54 is suspended by a chain 63, and the other weight of one of the other ends of the upper weight 53 and the lower weight 54 causes other weights of the upper weight 53 and the lower weight 54 to exist. Since either one of the end portions is pulled up, the upper weight 53 and the lower weight 54 are balanced with each other, and the driving load by the weight driving device 60 can be reduced.

  In the above example, power is supplied to the weight driving device 60 by the power supply cable. However, the power supply rail is provided in the hoistway 1, and a slider that can slide the power supply rail is used as the weight frame 52. By providing the power, the power may be supplied from the slider to the weight driving device 60. Alternatively, a battery that is a power storage device may be mounted on the weight frame 52 to supply power to the weight driving device 60. In this case, power is supplied to the battery from a contact that contacts the battery terminal when the car 4 is landed.

  In the above example, the limit switch for starting the rotation of the upper weight 53 and the lower weight 54 is provided in the hoistway 1, but the weight frame 52 may be provided with a limit switch. In this case, a cam for operating the limit switch is provided in the hoistway 1.

  In the above example, the weight frame 52 is suspended by the main rope 10, and the upper weight 53 and the lower weight 54 are rotated with respect to the weight frame 52 by the weight driving device 60. As shown in FIG. 15, the weight drive device (actuator) 67 is directly suspended by the main rope 10, and the weight drive device 67 is provided with the upper weight 53 and the lower weight 54. The lower weight 54 may be rotated. In this way, the horizontal sectional area of the counterweight when the upper weight 53 and the lower weight 54 are in the normal position can be reduced by the weight frame 52.

Embodiment 3 FIG.
FIG. 16 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 3 of the present invention. FIG. 17 is a cross-sectional view showing the elevator apparatus of FIG. In this example, the counterweight 71 has a weight frame 52 and first to fourth weights 72 to 75 which are four weight elements mounted on the weight frame 52. In the vertical projection plane of the hoistway 1, the first to fourth weights 72 to 75 are located at a flat position (a two-dot broken line in FIG. 16) partially overlapping the area of the car 4 and outside the area of the car 4. It can rotate with respect to the weight frame 52 between the normal position (solid line in FIG. 16). The first to fourth weights 72 to 75 are rotated to the flat position when they are near the lower end of the hoistway 1, and are rotated to the normal positions when they are in the middle part of the hoistway 1. It has become. The weight frame 52 is disposed outside the area of the car 4 in the vertical projection plane of the hoistway 1.

  FIG. 18 is a side view showing the counterweight 71 of FIG. FIG. 19 is a side view showing the counterweight 71 when the first to fourth weights 72 to 75 in FIG. 18 are in the flat position. In the figure, the weight frame 52 is disposed below the second weight rotation shaft 76 and the second weight rotation shaft 76, which are horizontal axes extending horizontally between the side surface portions 56. A third weight rotation shaft 77 which is a horizontal axis parallel to the two weight rotation shafts 76 is fixed.

  A pair of guide grooves 78 extending in the vertical direction is provided in a portion of each side surface portion 56 positioned above the second weight rotation shaft 76. A first weight rotation shaft 79 which is a horizontal shaft extending horizontally between the side surface portions 56 is slidably passed through the guide groove 78.

  A pair of guide members 80 extending in the vertical direction are provided at the bottom of each side surface portion 56. A slide arm 81 extending in the vertical direction is slidably inserted into the guide member 80. The lower end of the slide arm 81 is disposed below the third weight rotation shaft 77, and a fourth weight rotation shaft 82 parallel to the third weight rotation shaft 77 is rotatable. It is connected.

  The first weight pivot shaft 79 has a first weight 72, the second weight pivot shaft 76 has a second weight 73, and the third weight pivot shaft 77 has a third weight. A weight 74 and a fourth weight 75 are rotatably provided on the fourth weight rotation shaft 82.

  Each of the first to fourth weights 72 to 75 has a major axis (vertical dimension) and a minor axis (lateral dimension), each having a major axis (vertical dimension) and an arc-shaped one end. It has a semi-oval shape (semi-oval shape) with a square end. The first to fourth weight rotating shafts 79, 76, 77, and 82 are provided at one ends of the first to fourth weights 72 to 75 in the longitudinal direction of the cross section.

  The other end portions of the first weight 72 and the second weight 73 are connected to each other by a hinge 84 having a common connecting shaft 83 so as to be rotatable. One end of the chain 63 is connected to the other end of the first weight 72.

  The other end portions of the third weight 74 and the second weight 75 are connected to each other by a hinge 86 having a common connecting shaft 85 so as to be rotatable. The other end of the chain 63 is connected to the other end of the third weight 74.

  The other end portions of the first weight 72 and the second weight 73 are connected to the first weight rotating shaft 79 and the second weight when the first weight 72 and the second weight 73 are in the normal position. It is located between the weight rotation shafts 76 (FIG. 18), and is located closer to the raising / lowering region side of the car 4 than the first and second weight rotation shafts 79 and 76 when in the flat position (FIG. 18). 19) It is as follows. Further, the first weight pivot shaft 79 is slid in the guide groove 78 by the rotation of the first weight 72 and the second weight 73 between the normal position and the flat position. ing.

  The other end portions of the third weight 74 and the fourth weight 75 are connected to the third weight rotating shaft 77 and the fourth weight when the third weight 74 and the fourth weight 75 are in the normal position. It is located between the pivot shaft 82 for weight (FIG. 18), and when it is in the flat position, it is located closer to the raising / lowering region side of the car 4 than the third and fourth pivot shafts 77, 82 for weight (FIG. 18). 19) It is as follows. The slide arm 81 is slid in the guide member 80 by the rotation of the third weight 74 and the fourth weight 75 between the normal position and the flat position.

  The first to fourth weights 72 to 75 are rotated between the normal position and the flat position by the movement of the chain 63 by driving the weight driving device 60. Other configurations are the same as those of the second embodiment.

Next, the operation will be described.
When the car 4 and the counterweight 71 are moved up and down in the middle part of the hoistway 1, the first to fourth weights 72 to 75 are in the normal position, and the car 4 and the counterweight 71 pass up and down each other. (Solid line in FIG. 16).

  When the counterweight 71 approaches the lower end portion and the chain 63 is moved by driving the weight driving device 60, the first weight rotating shaft 79 is placed in the guide groove 78 by the own weight of one end portion of the first weight 72. The other end portions of the first and second weights 72 and 73 are rotated toward the lift area side of the car 4. At this time, the other end portion of the third weight 74 is pulled up by the chain 63 and rotated to the lifting / lowering area side of the car 4. Along with this, the other end portion of the fourth weight 75 is rotated to the lifting / lowering area side of the car 4 while the slide arm 81 is slid upward in the guide member 80. Thereby, the 1st-4th weight 72-75 is displaced to a flat position.

  When the counterweight 71 is raised, the first to fourth weights 72 to 75 are displaced from the flat position to the normal position by the reverse operation.

  In such an elevator counterweight 71, the first and second weights 72, 73 are rotatable about a common connecting shaft 83, and the third and fourth weights 74, 75 are common. Therefore, more weights can be rotated than in the second embodiment. Thereby, the deviation of the gravity center position of the counterweight due to the rotation of the weight can be reduced.

Embodiment 4 FIG.
20 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 4 of the present invention, and FIG. 21 is a transverse sectional view showing the elevator apparatus of FIG. FIG. 22 is a front view showing the elevator apparatus when viewed from the car 4 side of FIG. In this example, a counterweight 91 is disposed between the counterweight guide rails 3. The counterweight 91 and the car 4 are moved up and down in the hoistway 1 by driving the hoisting machine 6. The counterweight 91 has a weight frame 92 to which the main rope 10 is connected, and an upper weight 93 and a lower weight 94 which are first and second weight elements mounted on the weight frame 92, respectively.

  The lower weight 94 is located at a normal position (solid line in FIG. 20) that protrudes downward from the upper weight 93 in the height direction, is located on the upper weight 93 side of the normal position in the height direction, and from the normal position in the horizontal direction. It is possible to displace between the flat position (two-dot broken line in FIG. 20) located on the side away from the upper weight 93. The lower weight 94 is displaced to the flat position when it is near the lower end of the hoistway 1, and is displaced to the normal position when it is located in the middle part of the hoistway 1. Further, the lower weight 94 is located outside the area of the car 4 when in the normal position in the vertical projection plane of the hoistway 1 (solid line in FIG. 21), and a part of the car weight 94 is in the flat position. It overlaps the area (two-dot broken line in FIG. 21). The weight frame 92 and the upper weight 93 are disposed outside the area of the car 4 in the vertical projection plane of the hoistway 1.

  23 is a side view showing the counterweight 91 in FIG. 20, and FIG. 24 is a side view showing the counterweight 91 when the upper weight 93 and the lower weight 94 in FIG. 23 are in the flat position. FIG. 25 is a perspective view showing the counterweight 91 of FIG. Further, FIG. 26 is a front view showing the counterweight 91 of FIG. In the figure, the weight frame 92 includes a back surface portion 96 including a connection portion 95 to which the main rope 10 is connected at the top, and a pair of side surface portions 97 extending from both end portions in the width direction of the back surface portion 96 to the lift region side of the car 4. have. Guide shoes 66 are provided at the upper end and the lower end of each side surface 97.

  A pair of rotatable drive sprockets 98 and 99 are provided in the horizontal direction and spaced apart from each other on the upper portion of the back surface portion 96 inside the weight frame 92. A drive chain 100 is wound between the drive sprockets 98 and 99 (FIGS. 25 and 26).

  In the upper part of the back surface portion 96, a horizontally extending guide hole 101 is provided. A slide member 102 is slidably provided in the guide slot 101. The slide member 102 is fixed to the drive chain 100. The slide member 102 is provided with a rotatable engaging roller 103 that is an engaging portion so as to protrude outside the weight frame 92. That is, the engagement roller 103 can move horizontally with respect to the weight frame 92 (FIG. 26).

  A suspension sprocket 104 that can rotate integrally with the drive sprocket 99 is provided on the rotation shaft of the drive sprocket 99. A suspension chain 105 that is a suspension rope is wound around the suspension sprocket 104. The upper weight 93 and the lower weight 94 are suspended from the weight frame 92 by a suspension chain 105. The upper weight 93 and the lower weight 94 are displaced in the vertical direction with respect to the weight frame 92 by the rotation of the suspension sprocket 104 (FIGS. 25 and 26).

  The upper weight 93 and the lower weight 94 include inclined portions 106 and 107 that face each other when in the normal position, and vertical portions 108 and 109 that continue to the inclined portions 106 and 107 and face each other when in the flat position. And are provided respectively. The inclined portion 106 is provided at the lower end portion of the upper weight 93, and the inclined portion 107 is provided at the upper end portion of the lower weight 94.

  The inclined portion 106 and the vertical portion 108 are provided with a plurality of rolling rollers 110 that roll while being in contact with the upper weight 93. That is, the inclined portion 106 and the vertical portion 108 can slide with respect to the inclined portion 107 and the vertical portion 109 (FIGS. 23 and 24).

  Inside the weight frame 92, a pair of lower weight guide rails 111 extending in the vertical direction, and a pair of upper weight guide rails 112 disposed on the back surface 96 side of the lower weight guide rail 111 and extending in the vertical direction. And are provided. Each lower weight guide rail 111 and each upper weight guide rail 112 are fixed to each side surface portion 97. A plurality of upper weight guide shoes 113 guided in the vertical direction by the respective upper weight guide rails 112 are fixed to the upper weight 93 (FIGS. 23 and 24).

  The lower weight 94 is provided with a plurality of pivot links 114 bent in a substantially U shape. Each pivot link 114 is pivotable about a bent portion with respect to the lower weight 94. A lower weight guide shoe 115 guided in the vertical direction by a lower weight guide rail 111 is rotatably provided at one end of each rotation link 114. Further, between each other end of each rotation link 114 and the lower weight 94 is connected a spring 116 that is an urging means for urging the rotation link 114 in a direction in which the lower weight 94 approaches the back surface portion 96 ( FIG. 23, 24).

  A guide rail 117 that can be engaged with the engaging roller 103 by raising and lowering the counterweight 91 is provided in the vicinity of the lower end portion in the hoistway 1. The guide rail 117 is inclined with respect to the lifting / lowering direction of the counterweight 91. The engaging roller 103 is guided by the guide rail 117 in the horizontal direction with respect to the weight frame 92 as the counterweight 91 moves up and down (FIGS. 22 and 26).

  The suspension sprocket 104 is rotated by the movement of the engagement roller 103 with respect to the weight frame 92. The upper weight 93 and the lower weight 94 are displaced in the vertical direction with respect to the weight frame 92 by the rotation of the suspension sprocket 104. Other configurations are the same as those of the second embodiment.

Next, the operation will be described.
When the car 4 and the counterweight 91 are moved up and down in the intermediate part in the hoistway 1, the upper weight 93 and the lower weight 94 are in the normal position, and the car 4 and the counterweight 91 are raised and lowered with each other ( Solid line in FIG. 20).

  When the counterweight 91 approaches the lower end, the engagement roller 103 is guided along the guide rail 117 while being engaged with the guide rail 117. As a result, the engagement roller 103 is moved in the horizontal direction with respect to the weight frame 92, and the drive sprockets 98 and 99 and the suspension sprocket 104 are rotated. As a result, the upper weight 93 is displaced downward with respect to the weight frame 92 while being guided by the upper weight guide rail 112, and the lower weight 94 is weighted while being protruded along the inclined portion 106 toward the lift area of the car 4. The frame 92 is displaced upward. At this time, the rotation link 114 is rotated with respect to the lower weight 94, and the biasing of the lower weight 94 toward the back surface portion 96 by the spring 116 is maintained. Thereafter, the upper weight 93 and the lower weight 94 are displaced to the flat position.

  When the counterweight 91 is raised, the upper weight 93 and the lower weight 94 are displaced from the flat position to the normal position by an operation reverse to the above.

  In such an elevator balancing weight 91, the lower weight 94 is located at the normal position protruding from the upper weight 93 in the height direction, and is located on the upper weight 93 side of the normal position in the height direction, and in the horizontal direction. Since it can be displaced between the flat position located on the side farther from the upper weight 93 than the normal position, the car 4 and the counterweight 91 do not pass each other near the end of the hoistway 1, The height of the counterweight 91 can be reduced by displacing the lower weight 94 toward the lift area side of the car 4, and the lower weight 94 is displaced outside the lift area of the car 4 in the middle part of the hoistway 1. The car 4 and the counterweight 91 can be passed with each other without increasing the horizontal sectional area of the hoistway 1. Therefore, the size of the space of the hoistway 1 can be reduced while the floor area of the car 4 is secured.

  In addition, since the upper weight 93 and the lower weight 94 are provided with inclined portions 106 and 107 slidable to each other, the displacement of the lower weight 94 with respect to the upper weight 93 can be made smooth.

  Further, since the upper weight 93 and the lower weight 94 are suspended from the weight frame 92 by the suspension chain 105 wound around the suspension sprocket 104, the weights of the upper weight 93 and the lower weight 94 are made equal. Can be balanced. Therefore, the burden for displacing the upper weight 93 and the lower weight 94 can be reduced.

  Further, since the suspension sprocket 104 is rotated by the horizontal movement of the engagement roller 103 with respect to the weight frame 92, the guide rail 117 inclined with respect to the lifting / lowering direction of the counterweight 91 is provided in the hoistway 1. By providing, the upper weight 93 and the lower weight 94 can be easily displaced. Moreover, since it is not necessary to provide the guide rail 117 in the raising / lowering area side of the cage | basket | car 4, the collision to the guide rail 117 of the cage | basket | car 4 can be prevented.

Embodiment 5 FIG.
27 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 5 of the present invention, and FIG. 28 is a transverse sectional view showing the elevator apparatus of FIG. In this example, a counterweight 121 is disposed between the counterweight guide rails 3. The counterweight 121 and the car 4 are moved up and down in the hoistway 1 by driving the hoisting machine 6. The counterweight 121 includes a weight frame 122 to which the main rope 10 is connected, and a lower weight 124 and an upper weight 123 that are first and second weight elements mounted on the weight frame 122, respectively.

  The upper weight 123 is located at a normal position (solid line in FIG. 27) that protrudes upward from the lower weight 124 in the height direction, is located closer to the lower weight 124 than the normal position in the height direction, and from the normal position in the horizontal direction. It is possible to displace between a flat position (a two-dot broken line in FIG. 27) located on the side away from the lower weight 124. Further, the upper weight 123 is displaced to the flat position when it is near the lower end of the hoistway 1, and is displaced to the normal position when it is in the middle part of the hoistway 1. Furthermore, the upper weight 123 is located outside the area of the car 4 when in the normal position in the vertical projection plane of the hoistway 1 (solid line in FIG. 28), and a part of the car weight 123 is in the flat position. It overlaps the area (two-dot broken line in FIG. 28). The weight frame 122 and the lower weight 124 are arranged outside the area of the car 4 in the vertical projection plane of the hoistway 1.

  29 is a side view showing the counterweight 121 of FIG. 27, and FIG. 30 is a perspective view showing the counterweight 121 of FIG. FIG. 31 is a side view showing the counterweight 121 when the upper weight 123 and the lower weight 124 in FIG. 29 are in the flat position. In the figure, a weight frame 122 includes a back surface portion 126 including a connection portion 125 to which the main rope 10 is connected at an upper portion, and a pair of side surface portions 127 extending from both end portions in the width direction of the back surface portion 126 to the lift region side of the car 4. have. Guide shoes 66 are respectively provided at the upper end and the lower end of each side surface 127.

  A rotatable penetrating shaft 128 that penetrates the side surface portion 127 and a rotatable rotating shaft 129 that is disposed at an interval with respect to the penetrating shaft 128 and extends inside the weight frame 122 are disposed above the one side surface portion 127. And are provided. One end of the penetrating shaft 128 is located outside the weight frame 122, and the other end is located inside the weight frame 122.

  A pinion gear 130 that is a rotating part is fixed to one end portion of the through shaft 128, and a first pulley 131 is fixed to the other end portion of the through shaft 128. The through shaft 128, the pinion gear 130, and the first pulley 131 are integrally rotatable with respect to the weight frame 122.

  A second pulley 132 and a suspension sprocket 133 are coaxially fixed to the rotating shaft 129. In other words, the rotating shaft 129, the second pulley 132, and the suspension sprocket 133 can be rotated integrally with the weight frame 122.

  A V-belt 134 as a transmission belt is wound between the first pulley 131 and the second pulley 132. A suspension chain 135 that is a suspension rope is wound around the suspension sprocket 133. The upper weight 123 and the lower weight 124 are suspended from the weight frame 122 by a suspension chain 135.

  The upper weight 123 and the lower weight 124 are displaced in the vertical direction by the rotation of the suspension sprocket 133. The suspension sprocket 133 is rotated when the rotation of the pinion gear 130 is transmitted to the suspension sprocket 133 by the V-belt 134.

  The upper weight 123 and the lower weight 124 are provided with inclined portions 137 and 138 respectively provided with a plurality of slide rails 136 that can slide with respect to each other. That is, the upper weight 123 is displaced with respect to the lower weight 124 while being slid along the inclined portion 138 of the lower weight 124.

  A pair of lower weight guide rails 139 extending in the vertical direction is provided inside the weight frame 122. The lower weight 124 is displaced in the vertical direction with respect to the weight frame 122 while being guided by the respective lower weight guide rails 139. Each lower weight guide rail 139 is fixed to the back surface portion 126.

  Near the lower end of the hoistway 1, a rack gear 140 (FIGS. 27 and 31) that can mesh with the pinion gear 130 by raising and lowering the counterweight 121 is provided. The rack gear 140 extends in the lifting / lowering direction of the counterweight 121. The pinion gear 130 is engaged with the rack gear 140 and rotated by raising and lowering the counterweight 121. Other configurations are the same as those of the second embodiment.

Next, the operation will be described.
When the car 4 and the counterweight 121 are moved up and down in the middle part of the hoistway 1, the upper weight 123 and the lower weight 124 are in the normal position, and the car 4 and the counterweight 121 are raised and lowered with each other ( Solid line in FIG. 27).

  When the counterweight 121 approaches the lower end, the pinion gear 130 is raised and lowered while being engaged with the rack gear 140. As a result, the pinion gear 130 is rotated, and the rotation of the pinion gear 130 is transmitted to the second pulley 132 via the V belt 134. As a result, the second pulley 132 and the suspension sprocket 133 are rotated, and the upper weight 123 and the lower weight 124 are displaced in the vertical direction with respect to the weight frame 122. At this time, the lower weight 124 is guided by the lower weight guide rail 139 and is displaced upward with respect to the weight frame 122. Further, the upper weight 123 is displaced downward with respect to the weight frame 122 while being protruded along the inclined portion 138 toward the raising / lowering region side of the car 4. Thereafter, the upper weight 123 and the lower weight 124 are displaced to the flat position.

  When the counterweight 121 is raised, the upper weight 123 and the lower weight 124 are displaced from the flat position to the normal position by the reverse operation.

  In such an elevator balancing weight 121, the upper weight 123 and the lower weight 124 are displaced in the vertical direction with respect to the weight frame 122 by the rotation of the pinion gear 130 by meshing with the rack gear 140 provided in the hoistway 1. Since this is possible, the upper weight 123 and the lower weight 124 can be easily displaced with respect to the weight frame 122. Further, since it is not necessary to provide the rack gear 140 on the elevator region side of the car 4, it is possible to prevent the car 4 from colliding with the rack gear 140.

  Further, the rotation of the pinion gear 130 is transmitted by the V belt 134 wound between the first and second pulleys 131 and 132, so that the upper weight 123 and the lower weight 124 move in the vertical direction with respect to the weight frame 122. When the V belt 134 is overloaded, for example, when the upper weight 123 and the lower weight 124 are caught on the weight frame 122 for some reason, the V belt 134 has the first and second weights. Thus, the load can be released by sliding with respect to the pulleys 131 and 132, and the damage of the members can be prevented from expanding.

Embodiment 6 FIG.
32 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 6 of the present invention, and FIG. 33 is a transverse sectional view showing the elevator apparatus of FIG. In this example, a counterweight 141 is disposed between the counterweight guide rails 3. The counterweight 141 and the car 4 are moved up and down in the hoistway 1 by driving the hoisting machine 6. The counterweight 141 has first to ninth weights 142 to 150 which are a plurality of (in this example, nine) weight elements that are stacked in the vertical direction and connected to each other. The main rope 10 is connected to the first-stage weight 142. In this example, the nine weight elements are first to ninth weights 142 to 150 in order from the top.

  The first, third, fifth, seventh, and ninth weights 142, 144, 146, 148, and 150 as the first weight elements have normal positions separated from each other in the height direction, It is possible to displace between flat positions that are closer to each other than the normal position in the vertical direction. In this example, the weights 142, 144, 146, 148, 150 of the first stage, the third stage, the fifth stage, the seventh stage and the ninth stage come into contact with each other when they are in the flat position. .

  The second, fourth, sixth, and eighth weights 143, 145, 147, and 149 as the second weight elements are the first, third, and fifth weights in the height direction. The normal position located between each of the weights 142, 144, 146, 148, 150 of the stage, the seventh stage, and the ninth stage, and a position closer to each other than the normal position in the height direction, and normal in the horizontal direction A flat position (two points in FIG. 32) located on the side farther from each of the weights 142, 144, 146, 148, 150 of the first, third, fifth, seventh and ninth stages from the position. It is possible to displace between the broken line). In this example, the weights 143, 145, 147, and 149 of the second stage, the fourth stage, the sixth stage, and the eighth stage come into contact with each other when they are in the flat position.

  The weights 142, 144, 146, 148, 150 of the first stage, the third stage, the fifth stage, the seventh stage, and the ninth stage are arranged outside the area of the car 4 in the vertical projection plane of the hoistway 1, respectively. Has been. Each of the weights 143, 145, 147, and 149 of the second, fourth, sixth, and eighth stages is the area of the car 4 when it is in the normal position in the vertical projection plane of the hoistway 1. It is arranged outside, and when it is in the flat position, a part thereof overlaps with the car 4 (FIG. 33).

  That is, the counterweight 141 has a long length in the height direction when the first stage to ninth stage weights 142 to 150 are in the normal position and a length in the horizontal direction (of the counterweight 141). Thickness) is shortened, and when the weights 142 to 150 of the first to ninth stages are in the flat position, the length in the height direction is short and the length in the horizontal direction is long. Yes.

  Further, the weights 142 to 150 of the first stage to the ninth stage are displaced to their flat positions when they are near the lower end of the hoistway 1, and are placed to their normal positions when they are in the middle part of the hoistway 1. It is designed to be displaced (FIG. 32).

  34 is a side view showing the counterweight 141 in FIG. 32, and FIG. 35 is a side view showing the counterweight 141 when the first to ninth stage weights 142 to 150 in FIG. 34 are in the flat position. . In the figure, the lower end of the first stage weight 142, the upper and lower ends of the second to eighth stage weights 143 to 149, and the upper end of the ninth stage weight 150 are inclined to slide with each other. Each part 151 is provided. A sliding material 152 made of a low friction material (for example, a low friction polymer material) is attached to each inclined portion 151.

  The weights 142 to 150 of the first to ninth stages are connected to each other by a plurality of link members 153 that are rotatably provided to the weights 142 to 150 of the first to ninth stages. . Each link member 153 is rotated toward the lift area side of the car 4 by the displacement of the weights 142 to 150 of the first stage to the ninth stage from the normal position to the flat position.

  A guide member 154 extending upward is fixed to the eighth-stage weight 149. The guide member 154 is provided with a guide slot 155 extending in the vertical direction. A pair of slide pins 156 and 157 that are slidably passed through the guide long holes 155 are fixed to the weights 143, 145, and 147 of the second, fourth, and sixth stages, respectively. The slide pins 156 and 157 are arranged at intervals in the vertical direction. At the upper end and the lower end of the guide member 154, a rotatable engagement roller 158 that is a second engagement portion is provided.

  The first, third, fifth, seventh and ninth weights 142, 144, 146, 148, 150 are engaged with the first weight guide rail 3. A guide shoe 66 is provided.

  A guide rail 159 that can be engaged with the engaging roller 158 by raising and lowering the counterweight 141 is provided near the lower end portion in the hoistway 1. The guide rail 159 is inclined with respect to the counterweight guide rail 3 so as to move away from the counterweight guide rail 3 toward the elevator region of the car 4 as it approaches the lower end of the hoistway 1. The engaging roller 158 is guided by the guide rail 159 while being engaged with the guide rail 159 as the counterweight 141 moves up and down.

  The weights 143, 145, 147, and 149 of the second, fourth, sixth, and eighth stages are displaced in a direction approaching each other in the vertical direction by the guidance of the guide rail 159 as the counterweight 141 descends. However, the weights 142, 144, 146, 148, 150 of the first, third, fifth, seventh, and ninth stages are pulled out to the elevator region side of the car 4. The first stage, third stage, fifth stage, seventh stage and ninth stage weights 142, 144, 146, 148, 150 are the second stage, fourth stage, sixth stage and eighth stage weights 143. , 145, 147, 149 are pulled out by the guide rail 159, so that each link member 153 is rotated and displaced in a direction approaching each other in the vertical direction.

  The weights 143, 145, 147, and 149 of the second, fourth, sixth, and eighth stages are displaced in the direction away from each other in the vertical direction by the guidance of the guide rail 159 as the counterweight 141 rises. However, it is pushed into the weights 142, 144, 146, 148, 150 of the first, third, fifth, seventh and ninth stages. The first stage, third stage, fifth stage, seventh stage and ninth stage weights 142, 144, 146, 148, 150 are the second stage, fourth stage, sixth stage and eighth stage weights 143. , 145, 147, and 149 are pushed by the guide rail 159, so that each link member 153 is rotated and displaced in the direction away from each other in the vertical direction.

  In other words, the weights 142 to 150 of the first stage to the ninth stage are located between the normal position and the flat position by the guide of the guide shoe 66 by the counterweight guide rail 3 and the guide of the engagement roller 158 by the guide rail 159. Is designed to be displaced. Other configurations are the same as those of the second embodiment.

Next, the operation will be described.
When the car 4 and the counterweight 141 are moved up and down in the middle part of the hoistway 1, the first to ninth stage weights 142 to 150 are in the normal position, and the car 4 and the counterweight 141 pass each other. Is lifted up and down.

  When the counterweight 141 approaches the lower end, each engaging roller 158 is engaged with the guide rail 159 and is guided by the guide rail 159 to the lifting / lowering area side of the car 4 as the counterweight 141 is lowered. Thereby, the weights 143, 145, 147, and 149 of the second stage, the fourth stage, the sixth stage, and the eighth stage are pulled out toward the lift area side of the car 4 while approaching each other in the vertical direction. At this time, the weights 142, 144, 146, 148, 150 of the first stage, the third stage, the fifth stage, the seventh stage, and the ninth stage are the second stage, the fourth stage, the sixth stage, and the eighth stage. By the rotation of the link members 158 of the weights 143, 145, 147, and 149, they are displaced in directions close to each other in the vertical direction. Thereafter, the weights 142 to 150 of the first to ninth stages are displaced to the flat position.

  When the counterweight 141 is raised, the weights 142 to 150 of the first to ninth stages are displaced from the flat position to the normal position by the reverse operation.

  Even in this case, when the counterweight 141 approaches the lower end in the hoistway 1, the counterweight 141 is deformed so as to protrude toward the elevator region of the car 4, and the height of the counterweight 141. When the counterweight 141 is in the middle part of the hoistway 1, the counterweight 141 is deformed so that the thickness of the counterweight 141 is reduced, and the counterweight 141 is 4 can be passed. Therefore, the height of the hoistway 1 can be reduced while preventing the horizontal cross-sectional area of the hoistway 1 from being enlarged. That is, the size of the space in the hoistway can be reduced while the floor area of the car 4 is secured.

  In addition, since the first to ninth weights 142 to 150, which are weight elements, are overlapped in the vertical direction and connected to each other by the link member 158, the number of weight elements can be easily increased or decreased.

Embodiment 7 FIG.
36 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 7 of the present invention, and FIG. 37 is a transverse sectional view showing the elevator apparatus of FIG. In this example, a counterweight 161 is disposed between the counterweight guide rails 3. The counterweight 161 and the car 4 are moved up and down in the hoistway 1 by driving the hoisting machine 6. The counterweight 161 has first to fifth weights 162 to 166 which are a plurality (five in this example) of weight elements arranged in the vertical direction. The main rope 10 is connected to the first weight 162. In this example, the five weight elements are first to fifth weights 162 to 166 in order from the top.

  38 is a side view showing the counterweight 161 in FIG. 36, and FIG. 39 is a side view showing a state when the counterweight 161 in FIG. In the figure, the first to fifth weights 162 to 166 are provided with a plurality of connecting shafts 167 that are horizontal axes extending in the width direction of the counterweight 161. The cross-sectional shapes perpendicular to the connecting shaft 167 of the second to fourth weights 163 to 165 are oval shapes (oval shape) each having a major axis (vertical dimension) and a minor axis (lateral dimension).

  The connecting shaft 167 includes a lower end portion of the first weight 162, one end portion, a central portion and the other end portion in the cross-sectional major axis direction of the second to fourth weights 163 to 165, and an upper end portion of the fifth weight 166. Are provided respectively.

  Two short link members 168 are rotatably provided on the connecting shaft 167 of the first weight 162, and two short link members 169 are rotatably provided on the connecting shaft 167 of the fifth weight 166. It has been. One short link member 168 is rotatably connected to a connecting shaft 167 at one end of the second weight 163. One short link member 169 is rotatably connected to a connecting shaft 167 at the other end of the fourth weight 165.

  One end of the second weight 163 is pivotally connected to the other short link member 168 and the other end rotates to the connection shaft 167 at one end of the third weight 164. A long link member 170 that is movably connected is rotatably connected.

  One end of the third connection weight 164 is connected to the connection shaft 167 at the other end of the second weight 163 and the other end is one end of the fourth weight 165. A long link member 171 rotatably connected to the connecting shaft 167 of the part is rotatably connected.

  One end of the fourth weight 165 is connected to the connection shaft 167 at the center of the fourth weight 165 so as to be rotatable to the connection shaft 167 at the other end of the third weight 164, and the other end is connected to the other short link member 169. A long link member 172 that is rotatably connected is rotatably connected.

  The second to fourth weights 163 to 165 and the link members 168 to 172 partially overlap the normal position located outside the area of the car 4 and the area of the car 4 in the vertical projection plane of the hoistway 1. Between the flat positions, it can be rotated around the connecting shaft 167 at each central portion (FIG. 37). Further, the second to fourth weights 163 to 165 and the link members 168 to 172 are rotated in a direction approaching the horizontal due to the displacement to the normal position, and are rotated in a direction approaching the vertical due to the displacement to the flat position. The Further, the first to fifth weights 162 to 166 are displaced in the direction away from each other in the vertical direction by the displacement of the second to fourth weights 163 to 165 and the link members 168 to 172 to the normal positions, and are in the flat position. Are displaced in the direction approaching each other in the vertical direction.

  That is, the second to fourth weights 163 to 165 and the link members 168 to 172 are connected to each other in a pantograph shape so as to be rotatable. Therefore, the counterweight 161 can be expanded and contracted in the height direction by the rotation of the second to fourth weights 163 to 165 and the link members 168 to 172.

  A guide shoe which is a first engaging portion guided by the counterweight guide rail 3 is connected to the connecting shaft 167, the first weight 162 and the fifth weight 166 provided at the center of the third weight 164. 66 is provided. The connecting shaft 167 provided at one end of the third weight 164 is provided with an engaging roller 173 as a second engaging portion. Each of the first, third, and fifth weights 162, 164, and 166 is provided with a guide shoe 66 that is a first engaging portion.

  Each counterweight guide rail 3 is inclined with respect to the vertical direction so as to approach the lift area side of the car 4 as it approaches the lower end of the hoistway 1. Further, a guide rail 174 that can be engaged with the engaging roller 173 by raising and lowering the counterweight 161 is provided near the lower end portion in the hoistway 1. The guide rail 174 is inclined with respect to the counterweight guide rail 3 so as to move away from the counterweight guide rail 3 as it approaches the lower end of the hoistway 1. The engaging roller 173 is guided by the guide rail 174 as the counterweight 161 moves up and down (FIG. 36).

  That is, the counterweight 161 approaches the elevator region side of the car 4 while being lowered by the guide of the counterweight guide rail 3, and is separated from the elevator region of the car 4 while being raised. The second to fourth weights 163 to 165 and the link members 168 to 172 are moved to the normal positions by guiding the engaging roller 173 by the guide rail 174 and guiding the guide shoe 66 by the counterweight guide rail 3. It can be rotated between the flat position. As a result, the first and fifth weights 162, 166 approach each other in the vertical direction. Other configurations are the same as those of the second embodiment.

  In such an elevator counterweight 161, the second to fourth weights 163 to 165 connected to each other by the link members 168 to 172 are rotatable about the connecting shaft 167. By rotating the fourth weights 163 to 165, the distance between the first to fifth weights 162 to 166 can be greatly changed, and the thickness direction and the height direction of the counterweight 161 are each changed. The amount of expansion / contraction of the length can be increased.

  Moreover, since the 1st-5th weights 162-166 which are weight elements are mutually connected by the link members 168-172, the number of weight elements can be increased / decreased easily.

  Further, the counterweight guide rail 3 is inclined with respect to the vertical direction so as to approach the elevator region side of the car 4 as it approaches the lower end portion of the hoistway 1, so that the counterweight 161 is balanced while descending. Even when the thickness of the weight 161 increases toward the wall of the hoistway 1, the space of the hoistway 1 can be prevented from expanding.

Embodiment 8 FIG.
40 is a longitudinal sectional view showing an elevator apparatus according to Embodiment 8 of the present invention, and FIG. 41 is a transverse sectional view showing the elevator apparatus of FIG. In this example, a pair of counterweight guide rails 3 and a pair of guide rails 181 having a U-shaped horizontal cross section inclined with respect to the counterweight guide rail 3 are installed in the hoistway 1. . In the hoistway 1, a car 4 and a counterweight 182 are suspended by a main rope. The car 4 and the counterweight 182 are moved up and down by driving the hoisting machine 6. The car 4 is guided by the car guide rail 2, and the counterweight 182 is guided by each counterweight guide rail 3 and each guide rail 181. A car buffer 194 and a counterweight buffer 195 are installed at the bottom of the hoistway 1.

  Each guide rail 181 comes closest to the counterweight guide rail 3 in the middle part of the hoistway 1 when the hoistway 1 is viewed from the side, and approaches the upper end and lower end, that is, the end part of the hoistway 1. The car 4 is inclined with respect to the counterweight guide rail 3 so as to be gently separated from the counterweight guide rail 3 toward the lift region side (FIG. 40).

  42 is a perspective view showing the counterweight 182 of FIG. In the drawing, between each counterweight guide rail 3 (FIG. 40), a pair of horizontally extending first engaging shafts, that is, an upper shaft 183 and a lower shaft 184, are arranged to face each other in the vertical direction. . A pair of guide shoes 185 that are respectively engaged with the counterweight guide rails 3 are fixed to both ends of the upper shaft 183. A pair of guide shoes 186 that are engaged with the counterweight guide rails 3 are fixed to the lower shaft 184. The upper shaft 183 and the lower shaft 184 are guided by the counterweight guide rail 3 by raising and lowering the counterweight 182.

  Between each guide rail 181 (FIG. 40), an intermediate shaft 187, which is a second engaging shaft extending horizontally, is disposed. The length of the intermediate shaft 187 is longer than the length of each of the upper shaft 183 and the lower shaft 184. A pair of engagement rollers 188 that engage with the guide rail 181 are provided at both ends of the intermediate shaft 187. The intermediate shaft 187 is guided by the guide rail 181 by raising and lowering the counterweight 182.

  An upper surface panel 189 is provided between the upper shaft 183 and the intermediate shaft 187. The upper front panel 189 is rotatably connected to the upper shaft 183 and the intermediate shaft 187, respectively. A lower front panel 190 is provided between the lower shaft 184 and the intermediate shaft 187. The lower front panel 190 is rotatably connected to the lower shaft 184 and the intermediate shaft 187. That is, the upper front panel 189 that is rotatably connected to the upper shaft 183 and the lower front panel 190 that is rotatably connected to the lower shaft 184 are rotatably connected to a common intermediate shaft 187. Yes.

  The width of the connection portion of the upper front panel 189 with the upper shaft 183 is smaller than the width of the connection portion of the upper front panel 189 with the intermediate shaft 187. Further, the width of the connection portion between the lower front panel 190 and the lower shaft 184 is smaller than the width of the connection portion between the lower front panel 190 and the intermediate shaft 187.

  An air hole 191 is provided in the upper surface panel 189. A fixed shaft 192 parallel to the lower shaft 184 is fixed to the lower front panel 190. At both ends of the fixed shaft 192, a pair of rope stops 193 to which the main rope 10 is connected are provided. The lower shaft 184 is provided with a buffer receiving portion 196 that faces the counterweight buffer 195.

  43 is a perspective view showing the counterweight 182 when viewed from the direction of arrow B in FIG. In the figure, an upper back panel 197 is rotatably connected to the upper shaft 183 in addition to the upper front panel 189. In addition to the lower front panel 190, a lower back panel 198 is rotatably connected to the lower shaft 184. The upper back panel 197 and the lower back panel 198 are connected to a common connecting shaft 199 so as to be rotatable. The width of the connection portion of the upper back panel 197 and the lower back panel 198 with the connecting shaft 199 is smaller than the width of the connection portion of the upper front panel 189 and the lower front panel 190 with the intermediate shaft 187.

  The connecting shaft 199 is a horizontal axis that is parallel to the upper shaft 183 and the lower shaft 184. Further, the connecting shaft 199 is disposed closer to the counterweight guide rail 3 than the intermediate shaft 187.

  The upper front panel 189 is provided with a pair of connecting shafts 200 extending along the side edges of the upper front panel 189. Each connecting shaft 200 is provided with a pair of upper side panels 201 so as to be rotatable. Further, the lower front panel 190 is provided with a pair of connecting shafts 202 that extend along the side edges of the lower front panel 190. Each connection shaft 202 is provided with a pair of lower side panels 203 so as to be rotatable.

  One upper side panel 201 and one lower side panel 203 are rotatably provided on a common connecting shaft 204, and the other upper side panel 201 and the other lower side panel 203 are rotatably provided on a common connecting shaft 205. . The upper back panel 197 and each upper side panel 201 are not connected to each other so as not to restrict the movement of each other. The lower back panel 198 and the lower side panels 203 are not connected to each other so as not to restrict the movement of each other.

  The panel deformation frame 206 includes an upper front panel 189, a lower front panel 190, an upper back panel 197, a lower back panel 198, a pair of upper side panels 201, and a pair of lower side panels 203.

  Inside the panel deformation frame 206, there is provided an accommodation bag (accommodation tube) 207 that is stretchable and airtight and is affixed to the inner surface of each panel 189, 190, 197, 198, 201, 203. When there is a gap between the upper back panel 197 and the lower back panel 198 and the upper side panel 201 and the lower side panel 203, a part of the containing bag 207 is exposed to the outside through the gap.

  FIG. 44 is a longitudinal sectional view showing the elevator apparatus when the counterweight 182 of FIG. 40 is at the upper end portion of the hoistway 1. FIG. 45 is a longitudinal sectional view showing the elevator apparatus when the counterweight 182 of FIG. 40 is at the lower end of the hoistway 1. FIG. 46 is a cross-sectional view showing the elevator apparatus of FIG. In the figure, the panel deformation frame 206 has a normal state located outside the area of the car 4 in the vertical projection plane of the hoistway 1, and a shorter length in the height direction than the normal state, and the area of the car 4. It can be deformed between the flat state where a part of it overlaps.

  The intermediate shaft 187 is displaceable between a normal position located outside the area of the car 4 and a flat position partially overlapping within the area of the car 4 in the vertical projection plane of the hoistway 1. The panel deformation frame 206 is in a normal state when the intermediate shaft 187 is in the normal position, and is in a flat state when the intermediate shaft 187 is in the flat position.

  The upper shaft 183 and the lower shaft 184 are displaced in directions closer to each other in the height direction due to displacement of the intermediate shaft 187 away from the upper shaft 183 and lower shaft 184, that is, displacement of the intermediate shaft 187 to the flat position. It is like that. Further, the upper shaft 183 and the lower shaft 184 are displaced in the direction away from each other in the height direction due to the displacement of the intermediate shaft 187 in the direction approaching the upper shaft 183 and the lower shaft 184, that is, the displacement of the intermediate portion 187 to the normal position. It has come to be.

  The upper front panel 189, the lower front panel 190, the upper back panel 197, the lower back panel 198, the pair of upper side panels 201 and the pair of lower side panels 203 are relative to each other with respect to the intermediate shaft 187, the upper shaft 183, and the lower shaft 184. It is displaced following the displacement.

  The intermediate shaft 187 is displaced to the normal position by the guide rail 181 when the counterweight 182 is in the intermediate portion of the hoistway 1, and the counterweight 182 is moved to the upper end portion and the lower end portion of the hoistway 1 (that is, It is displaced to the flat position when it is at the end portion. When the counterweight 182 is in the middle part of the hoistway 1 by the guide of the upper shaft 183 and the lower shaft 184 by the counterweight guide rail 3 and the guide of the intermediate shaft 187 by the guide rail 181, the panel deformation frame 206 is When the balance weight 182 is at the end of the hoistway 1, the flat state is obtained.

  47 is a longitudinal sectional view showing the counterweight 182 in FIG. 40, and FIG. 48 is a longitudinal sectional view showing the counterweight 182 in FIG. In the figure, a storage bag 207 contains a liquid 208 that is a weight element that can be deformed as the panel deformation frame 204 is deformed. The liquid 208 is contained in the storage bag 207 in such an amount that the liquid 208 does not overflow from the air hole 191 when the panel deformation frame 206 becomes flat. The casing 209 includes a panel deformation frame 206 and a storage bag 207. Further, the counterweight 182 includes a casing 209 and a liquid 208. Other configurations are the same as those of the second embodiment.

Next, the operation will be described.
When the car 4 and the counterweight 182 are moved up and down in the intermediate part in the hoistway 1, the panel deformation frame 206 is in a normal state, and the car 4 and the counterweight 181 are raised and lowered with each other.

  When the counterweight 141 approaches the lower end, the intermediate shaft 187 is guided to the upper shaft 183 and the lower shaft by the guide of the intermediate shaft 187 by the guide rail 181 and the upper shaft 183 and the lower shaft 184 by the counterweight guide rail 3. It is displaced in a direction away from 184. As a result, the upper shaft 183 and the lower shaft 184 are displaced toward each other, and the counterweight 182 is made flat.

  When the counterweight 182 is raised, the counterweight 182 is changed from the flat state to the normal state at the intermediate portion of the hoistway 1 by an operation reverse to the above.

  In such an elevator counterweight 182, the liquid 208 as the weight element is accommodated in the deformable casing 209, so that the end portion of the hoistway 1 is secured while maintaining a predetermined weight of the counterweight 182. The casing 209 is deformed in the vicinity to reduce the height of the counterweight 182, and the casing 209 can be deformed outside the lifting area of the car 4 at the middle part of the hoistway 1. The car 4 and the counterweight 182 can pass each other without being enlarged. Therefore, the size of the space of the hoistway 1 can be reduced while the floor area of the car 4 is secured.

  Moreover, since the liquid 208 is contained in the casing 209, it can respond to all shapes of the casing 209. In addition, the size of the counterweight 182 can be prevented from increasing.

  In addition, a pair of front panels 189 and 190 that are rotatably connected to the upper shaft 183 and the lower shaft 184, respectively, are rotatably connected to a common intermediate shaft 187 and rotated to the upper shaft 183 and the lower shaft 184, respectively. Since the pair of freely connected back panels 197 and 198 are rotatably connected to the common connecting shaft 199, the panel deformation frame 206 can be deformed with a simple configuration.

  Further, since the storage bag 207 is provided in the panel deformation frame 206, the counterweight 182 can be easily deformed, and leakage of the liquid 208 inside can be prevented.

  In the above example, the weight element housed in the casing 209 is the liquid 208, but powder may be housed in the casing 209.

  Moreover, in the said Embodiment 1-7, although the height of a counterweight becomes small in the lower end part in the hoistway 1, ie, a weight element is displaced to a flat position, The height of the counterweight may also be reduced at the upper end of the.

  In the above example, the engaging roller is engaged with the guide rail having a U-shaped cross section, but the plate-shaped guide rail is passed between a pair of horizontally arranged engaging rollers. By doing so, the engaging roller may be engaged with the guide rail.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 3 Balanced weight guide rail, 5, 51, 71, 91, 121, 141, 161, 182 Balanced weight, 15, 117 Guide rail, 19 Suspension member (connection part), 20, 23, 25 Guide Shoe (first engaging portion), 22 Upper horizontal member (connecting portion), 24 Lower horizontal member (connecting portion), 26, 29 Connecting shaft (connecting portion), 27, 28, 30, 31 Weight element, 32 Displacement Link structure (second engaging portion), 52, 92, 122 Weight frame, 53, 93, 123 Upper weight (weight element), 54, 94, 124 Lower weight (weight element), 58 Upper weight rotation Moving shaft (horizontal axis), 59 Lower weight rotating shaft (horizontal axis), 60 Weight drive device, 66 Guide shoe (first engaging portion), 72-75 First to fourth weights, 83, 85 Connecting shaft, 103,1 53 engagement roller (second engagement portion), 104, 133 suspension sprocket (sprocket), 106, 107, 137, 138, 151 inclined portion, 142-150 first-stage to ninth-stage weight (weight element) ), 162 to 166 First to fifth weights (weight elements), 167 connecting shaft, 173 engaging roller (second engaging portion), 183 upper shaft (first engaging shaft), 184 lower shaft ( First engagement shaft), 187 Intermediate shaft (second engagement shaft), 189 Upper front panel (front panel), 190 Lower front panel (front panel), 197 Upper back panel (back panel), 198 Lower back Panel (back panel), 199 connecting shaft, 206 panel deformation frame, 207 containing bag, 208 liquid (weight element), 209 casing.

Claims (6)

A first weight element, a normal position protruding from the first weight element in the height direction, and a position located on the first weight element side from the normal position in the height direction, and the normal position in the horizontal direction. An elevator counterweight comprising a second weight element displaceable between a flat position projecting from the first weight element rather than a position.   The elevator weight according to claim 1, wherein the first weight element and the second weight element are provided with inclined portions that are slidable with respect to each other. It further comprises a weight frame provided with a rotatable sprocket,
The first weight element and the second weight element are suspended from the weight frame by a suspension line wound around the sprocket, and are moved up and down by the rotation of the sprocket. The elevator counterweight according to claim 1, wherein the elevator counterweight is provided. The weight frame is provided with an engaging portion that is horizontally movable with respect to the weight frame by engagement with a guide rail provided in the hoistway.
4. The elevator weight according to claim 3, wherein the sprocket is rotated by movement of the engagement portion with respect to the weight frame. The weight frame is provided with a rotating portion that can rotate by meshing with a rack gear provided in the hoistway,
4. The elevator counterweight according to claim 3, wherein the sprocket is rotated by rotation of the rotating portion.   6. The elevator weight according to claim 5, wherein the rotation of the rotating part is transmitted to the sprocket via a transmission belt.

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