Elevator counterweight

Abstract

To provide an elevator counterweight device that can reduce space in the hoistway. [Solution] In the elevator counterweight device 3, an opening 424 is formed in the upper frame 42. At least a portion of the opening 424 is formed in the upper plate portion 421 of the upper frame 42. The suspension wheel mounting member 6 has an upper frame inner member 61 which is attached to the upper frame 42 while being positioned in the internal space of the upper frame 42, and a suspension plate 62 which is fixed to the upper frame inner member 61 and reaches the upper part of the upper frame 42 through the opening 424 from the upper frame inner member 61. The counterweight suspension wheel 7 is attached to the suspension plate 62 above the upper frame 42. When the frame 4 is viewed from above, the suspension plate 62 is inclined with respect to the width direction of the frame 4.

Description

Technical Field

[0001] This disclosure relates to a counterweight device for an elevator.

Background Art

[0002] Patent Document 1 discloses a counterweight for an elevator in which a pulley mounting member is fixed to the upper frame of a frame body on which a plurality of weight pieces are mounted, and a pulley is attached to the pulley mounting member. The pulley mounting member is fixed to the outer surface of the upper frame using welding.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional elevator counterweight disclosed in Patent Document 1, when the frame body is viewed from above, the pulley mounting member protrudes outward from the upper frame. Therefore, it is impossible to reduce the arrangement space of the counterweight, and it is impossible to save space in the hoistway.

[0005] This disclosure solves the above problems and aims to provide a counterweight device for an elevator capable of saving space in the hoistway.

Means for Solving the Problems

[0006] The elevator counterweight device according to this disclosure comprises a frame, a counterweight body mounted on the frame, a suspension wheel mounting member attached to the frame, and a counterweight suspension wheel attached to the suspension wheel mounting member. The frame is arranged so that its width direction coincides with the horizontal direction, and the frame has a pair of vertical frames facing each other in the width direction of the frame, an upper frame fixed between the upper ends of the pair of vertical frames, and a lower frame fixed between the lower ends of the pair of vertical frames. The upper frame has an upper plate portion on which the upper surface of the upper frame is formed. An opening is formed in the upper frame, at least a portion of which is formed in the upper plate, and the internal space of the upper frame is open to the outside of the upper frame through the opening. The suspension wheel mounting member has an internal upper frame member which is attached to the upper frame while positioned in the internal space of the upper frame, and a suspension plate which is attached to the internal upper frame member and extends from the internal upper frame member through the opening to the upper part of the upper frame. The weight suspension wheel is attached to the suspension plate above the upper frame, and the suspension plate is inclined with respect to the width direction of the frame when viewed from above. [Effects of the Invention]

[0007] The elevator counterweight device described herein can help reduce space in the elevator shaft. [Brief explanation of the drawing]

[0008] [Figure 1] This is a configuration diagram showing an elevator according to Embodiment 1. [Figure 2] This is a front view showing the counterweight device of Figure 1. [Figure 3] Figure 2 is a top view showing the counterweight device. [Figure 4] This is a side view showing the counterweight device in Figure 2. [Figure 5] This is a perspective view showing the upper part of the counterweight device in Figure 2. [Figure 6] This is a top view showing the upper frame of Figure 5. [Figure 7] This is a side view showing the upper frame of Figure 6. [Figure 8]This is a cross-sectional view along line VIII-VIII in Figure 6. [Figure 9] Figure 5 is a perspective view showing the suspension wheel mounting member and the weight suspension wheel. [Figure 10] This is a perspective view showing the internal components of the upper frame in Figure 9. [Figure 11] This is a cross-sectional view along the line XI-XI in Figure 2. [Figure 12] This is a cross-sectional view showing the upper frame inner member of Figure 11 positioned at the first angle setting position. [Figure 13] This is a cross-sectional view showing the upper frame inner member of Figure 11 positioned at the second angle setting position. [Figure 14] This is a perspective view showing the upper frame internal member in the elevator counterweight device according to Embodiment 2. [Figure 15] Figure 14 is a front view showing the internal components of the upper frame. [Figure 16] This is a cross-sectional view along the line XVI-XVI in Figure 15. [Modes for carrying out the invention]

[0009] The embodiments for carrying out the subject matter of this disclosure will be described with reference to the attached figures. In each figure, the same or corresponding parts are denoted by the same reference numerals, and redundant explanations are simplified or omitted as appropriate. The subject matter of this disclosure is not limited to the following embodiments, and any modification of any component of the embodiments or omission of any component of the embodiments is possible without departing from the spirit of this disclosure.

[0010] Embodiment 1. Figure 1 is a configuration diagram showing an elevator according to Embodiment 1. In the figure, a car device 2 and a counterweight device 3 are arranged within the hoistway 1 so as to be movable in the vertical direction.

[0011] The car device 2 has a car 21 and a pair of car suspension wheels 22. The car 21 is provided with a car entrance / exit (not shown). Passengers can board and alight through the car entrance / exit of the car 21. Each of the pair of car suspension wheels 22 is provided at the lower part of the car 21.

[0012] The counterweight device 3 has a frame body 4, a weight body 5, a suspension wheel attachment member 6, and a weight suspension wheel 7. The weight body 5 has a plurality of unit weights 51. The weight body 5 is mounted on the frame body 4 in a state where the plurality of unit weights 51 are stacked. The suspension wheel attachment member 6 is attached to the upper part of the frame body 4. The weight suspension wheel 7 is attached to the suspension wheel attachment member 6.

[0013] At the upper part inside the hoistway 1, a hoisting machine 8 is provided. The hoisting machine 8 has a hoisting machine body 81 and a driving wire rope wheel 82.

[0014] The driving wire rope wheel 82 is rotatably provided on the hoisting machine body 81. The hoisting machine body 81 has a motor. When power is supplied to the hoisting machine body 81, the driving wire rope wheel 82 rotates with respect to the hoisting machine body 81 by the driving force of the motor of the hoisting machine body 81.

[0015] At the upper part inside the hoistway 1, a first wire rope stopper device 11 and a second wire rope stopper device 12 are provided. In the present embodiment, the first wire rope stopper device 11 and the second wire rope stopper device 12 are supported by a support beam (not shown) fixed inside the hoistway 1. The first wire rope stopper device 11 and the second wire rope stopper device 12 may be provided on the ceiling of the hoistway 1.

[0016] The car device 2 and the counterweight device 3 are suspended inside the hoistway 1 by a plurality of ropes 9. In FIG. 1, only one rope 9 is shown for simplicity. One end of each rope 9 is connected to the first wire rope stopper device 11. The other end of each rope 9 is connected to the second wire rope stopper device 12.

[0017] Each rope 9 is wound around the first rope-stopping device 11, a pair of car suspension wheels 22, a drive sheave 82, and a counterweight suspension wheel 7 in that order, and reaches the second rope-stopping device 12. As a result, the suspension method of the car device 2 and the counterweight device 3 by each rope 9 is a 2:1 roping system. The car device 2 and the counterweight device 3 move vertically within the hoistway 1 by the rotation of the drive sheave 82.

[0018] Figure 2 is a front view showing the counterweight device 3 of Figure 1. Figure 3 is a top view showing the counterweight device 3 of Figure 2. Figure 4 is a side view showing the counterweight device 3 of Figure 2. The weight body 5 is not shown in Figures 2 to 4. The frame 4 has a width direction X, a height direction Y, and a thickness direction Z defined. The height direction Y of the frame 4 is perpendicular to both the width direction X and the thickness direction Z of the frame 4. The width direction X of the frame 4 is perpendicular to the thickness direction Z of the frame 4. The frame 4 is positioned in the elevator shaft 1 with its height direction Y aligned with the vertical direction, and its width direction X and thickness direction Z aligned with the horizontal direction.

[0019] The frame 4 has a pair of vertical frames 41, an upper frame 42, and a lower frame 43.

[0020] As shown in Figure 2, the pair of vertical frames 41 face each other in the width direction X of the frame 4. Furthermore, each of the pair of vertical frames 41 is positioned along the height direction Y of the frame 4.

[0021] The upper frame 42 is fixed between the upper ends of a pair of vertical frames 41. The upper frame 42 is positioned along the width direction X of the frame body 4. Therefore, one end of the upper frame 42 is fixed to the upper end of one vertical frame 41, and the other end of the upper frame 42 is fixed to the upper end of the other vertical frame 41.

[0022] The lower frame 43 is fixed between the lower ends of a pair of vertical frames 41. The lower frame 43 is positioned along the width direction X of the frame body 4. Therefore, one end of the lower frame 43 is fixed to the lower end of one vertical frame 41, and the other end of the lower frame 43 is fixed to the lower end of the other vertical frame 41. The weight body 5 shown in Figure 1 is positioned in the space enclosed by the pair of vertical frames 41, the upper frame 42, and the lower frame 43, that is, the space inside the frame body 4.

[0023] The suspension traction member 6 is attached to the upper frame 42. The suspension traction member 6 protrudes upward from the upper frame 42.

[0024] The weight suspension wheel 7 is attached to the suspension wheel mounting member 6 via the suspension wheel axle 71 above the upper frame 42. The suspension wheel axle 71 is positioned horizontally. The weight suspension wheel 7 is rotatable relative to the suspension wheel mounting member 6 about the axis of the suspension wheel axle 71. When the frame 4 is viewed from above, the weight suspension wheel 7 is inclined with respect to the width direction X of the frame 4, as shown in Figure 3.

[0025] Figure 5 is a perspective view showing the upper part of the counterweight device 3 in Figure 2. Figure 6 is a top view showing the upper frame 42 in Figure 5. Figure 7 is a side view showing the upper frame 42 in Figure 6. Figure 8 is a cross-sectional view along line VIII-VIII in Figure 6. Note that in Figure 5, the outer shape of the upper frame 42 is shown by a dashed line. The upper frame 42 has an upper plate portion 421 and a pair of opposing plate portions 422.

[0026] The upper plate portion 421 is arranged horizontally along the longitudinal direction of the upper frame 42, that is, along the width direction X of the frame body 4. The upper surface of the upper frame 42 is formed on the upper plate portion 421. In this embodiment, the upper surface of the upper frame 42 is perpendicular to the height direction Y of the frame body 4.

[0027] The pair of opposing plate portions 422 are individually provided on both sides of the upper plate portion 421, along the upper plate portion 421. Furthermore, the pair of opposing plate portions 422 face each other in the width direction of the upper frame 42, i.e., the thickness direction Z of the frame body 4, with the space below the upper plate portion 421 in between. Each of the pair of opposing plate portions 422 has a side surface formed on the upper frame 42. In this embodiment, each side surface of the upper frame 42 is perpendicular to the thickness direction Z of the frame body 4.

[0028] As shown in Figure 7, the upper frame 42 has an internal space enclosed by an upper plate portion 421 and a pair of opposing plate portions 422. A pair of reinforcing members 423 are fixed to the upper frame 42 and are arranged in the internal space of the upper frame 42. As shown in Figure 8, the pair of reinforcing members 423 are positioned at a distance from each other in the width direction X of the frame 4. In this embodiment, when the upper frame 42 is viewed along the thickness direction Z of the frame 4, the pair of Z-shaped bent reinforcing members 423 are arranged in the internal space of the upper frame 42 so as to be symmetrical with respect to the center of the upper frame 42. The upper frame 42 is reinforced by the pair of reinforcing members 423.

[0029] Furthermore, as shown in Figure 6, a pair of openings 424 are formed in the upper frame 42. The internal space of the upper frame 42 is open to the outside of the upper frame 42 through each of the pair of openings 424. The pair of openings 424 are located offset from each other in the thickness direction Z and the width direction X of the frame 4. The pair of openings 424 are formed in the upper frame 42 corresponding to a pair of opposing plate portions 422. The range of each opening 424 extends from the corresponding opposing plate portion 422 to the upper plate portion 421. That is, a part of each opening 424 is formed in the upper plate portion 421, and the remaining part of each opening 424 is formed in the corresponding opposing plate portion 422.

[0030] In the upper plate portion 421, two inclined portions, a first inclined portion 421a and a second inclined portion 421b, are formed at the edge portion that forms the boundary with the opening 424, and their inclination angles with respect to the width direction X of the frame 4 when viewed from above are different. In this embodiment, the inclination angle of the first inclined portion 421a with respect to the width direction X of the frame 4 is smaller than the inclination angle of the second inclined portion 421b with respect to the width direction X of the frame 4. The first inclined portion 421a and the second inclined portion 421b are continuous with respect to each other when the frame 4 is viewed from above.

[0031] One first inclined portion 421a that forms the boundary with one opening 424 and the other first inclined portion 421a that forms the boundary with the other opening 424 are parallel to each other. One second inclined portion 421b that forms the boundary with one opening 424 and the other second inclined portion 421b that forms the boundary with the other opening 424 are parallel to each other. Each first inclined portion 421a and each second inclined portion 421b are located between the pair of openings 424 when the frame 4 is viewed from above.

[0032] As shown in Figure 5, the suspension traction motor mounting member 6 has an upper frame inner member 61 and a pair of suspension plates 62.

[0033] The upper frame internal member 61 is attached to the upper frame 42 while being positioned within the internal space of the upper frame 42. In this embodiment, the upper frame internal member 61 is attached to the upper plate portion 421 of the upper frame 42 by a pair of mounting fixtures 63. Bolts and the like are used as each mounting fixture 63.

[0034] A pair of suspension plates 62 are fixed to the upper frame inner member 61 by a plurality of fasteners 64. Bolts and the like are used as fasteners 64. The pair of suspension plates 62 are fixed to the upper frame inner member 61 with the upper frame inner member 61 in between. Also, the pair of suspension plates 62 correspond individually to a pair of openings 424. Each of the pair of suspension plates 62 extends from the upper frame inner member 61, through the corresponding opening 424, to the upper part of the upper frame 42. The pair of suspension plates 62 face each other, with the portion of the upper plate portion 421 located between the pair of openings 424 in between. The pair of suspension plates 62 are arranged parallel to each other. When the frame 4 is viewed from above, each of the pair of suspension plates 62 is inclined with respect to the width direction X of the frame 4.

[0035] Figure 9 is a perspective view showing the suspension wheel mounting member 6 and the weight suspension wheel 7 of Figure 5. Figure 10 is a perspective view showing the upper frame inner member 61 of Figure 9. The upper frame inner member 61 has a pair of base blocks 611. The pair of base blocks 611 are fixed to each other by welding or the like with parts of the back surfaces of the base blocks 611 overlapping. Therefore, the upper frame inner member 61 is a structure in which the pair of base blocks 611 are integrated.

[0036] Each of the pair of base blocks 611 is provided with a screw hole 611a for the upper frame and a plurality of screw holes 611b for the suspension plates, as shown in Figure 10. The screw holes 611a for the upper frame are provided on the upper surface of the base block 611. The plurality of screw holes 611b for the suspension plates are provided on the side surface of the base block 611. Therefore, the upper surface of the upper frame inner member 61 is provided with a pair of screw holes 611a for the upper frame, and the sides of the upper frame inner member 61 are each provided with a plurality of screw holes 611b for the suspension plates. A mounting fixture 63 for attaching the upper frame inner member 61 to the upper plate portion 421 of the upper frame 42 is screwed into each screw hole 611a for the upper frame. A fixing fixture 64 for fixing the suspension plate 62 to the upper frame inner member 61 is screwed into each screw hole 611b for the suspension plate.

[0037] The weight suspension wheel 7 is positioned above the upper frame 42, between a pair of suspension plates 62. The weight suspension wheel 7 is attached to the pair of suspension plates 62 via a suspension wheel axle 71. The suspension wheel axle 71 is perpendicular to the pair of suspension plates 62. As a result, the weight suspension wheel 7 is positioned along the pair of suspension plates 62.

[0038] The upper frame internal member 61 can be selectively positioned at one of several angle setting positions that cause the inclination angle of the suspension plate 62 with respect to the width direction X of the frame 4 when viewed from above to be different from each other. In this embodiment, the upper frame internal member 61 can be selectively positioned at one of three angle setting positions, namely the first angle setting position A, the second angle setting position B, and the intermediate angle setting position C.

[0039] Figure 11 is a cross-sectional view along the line XI-XI in Figure 2. Figure 12 is a cross-sectional view showing the upper frame inner member 61 in Figure 11 positioned at the first angle setting position A. Figure 13 is a cross-sectional view showing the upper frame inner member 61 in Figure 11 positioned at the second angle setting position B. Note that Figure 11 also shows the upper frame inner member 61 positioned at the intermediate angle setting position C. The inclination angle of the suspension plate 62 with respect to the width direction X of the frame 4, when viewed from above, increases as the position of the upper frame inner member 61 is changed in the order of first angle setting position A in Figure 12, intermediate angle setting position C in Figure 11, and second angle setting position B in Figure 13.

[0040] Of the three angle setting positions, the first angle setting position A and the second angle setting position B are two reference positions corresponding to the first inclined portion 421a and the second inclined portion 421b, respectively. When the upper frame internal member 61 is positioned at either of the two reference positions, when the frame 4 is viewed from above, each suspension plate 62 is positioned along the inclined portion corresponding to the reference position where the upper frame internal member 61 is positioned. Therefore, in this embodiment, when the upper frame internal member 61 is positioned at the first angle setting position A, when the frame 4 is viewed from above, each suspension plate 62 is positioned along the first inclined portion 421a corresponding to the first angle setting position A, as shown in Figure 12. Also, in this embodiment, when the upper frame internal member 61 is positioned at the second angle setting position B, when the frame 4 is viewed from above, each suspension plate 62 is positioned along the second inclined portion 421b corresponding to the second angle setting position B, as shown in Figure 13.

[0041] As shown in Figures 6 and 11 to 13, the upper frame 42 is provided with a plurality of mounting holes 425a, 425b, and 425c corresponding to three angle setting positions. Specifically, the upper frame 42 is provided with a pair of first mounting holes 425a corresponding to the first angle setting position A, a pair of second mounting holes 425b corresponding to the second angle setting position B, and a pair of intermediate mounting holes 425c corresponding to the intermediate angle setting position C. Each of the first mounting holes 425a, each of the second mounting holes 425b, and each of the intermediate mounting holes 425c is provided in the upper plate portion 421 of the upper frame 42. In this embodiment, as shown in Figure 8, each of the first mounting holes 425a, each of the second mounting holes 425b, and each of the intermediate mounting holes 425c penetrate not only the upper plate portion 421 but also the reinforcing member 423.

[0042] The upper frame inner member 61 is attached to the upper frame 42 by screwing a pair of mounting fixtures 63, which are selectively passed through one of the multiple mounting holes 425a, 425b, and 425c, into the upper frame screw holes 611a shown in Figure 10. Since the mounting holes 425a, 425b, and 425c are provided in the portion where the reinforcing member 423 overlaps the upper plate portion 421, the upper frame inner member 61 is fixed to the reinforced portion of the upper frame 42.

[0043] When the upper frame inner member 61 is attached to the upper frame 42 by a pair of mounting fixtures 63, the upper frame inner member 61 is positioned at the angle setting position corresponding to the mounting hole through which each mounting fixture 63 passes, among the first mounting holes 425a, second mounting holes 425b, and intermediate mounting holes 425c. Therefore, when the upper frame inner member 61 is attached to the upper frame 42 by a pair of mounting fixtures 63 passed through a pair of first mounting holes 425a, the upper frame inner member 61 is positioned at the first angle setting position A corresponding to the pair of first mounting holes 425a, as shown in Figure 12. Also, when the upper frame inner member 61 is attached to the upper frame 42 by a pair of mounting fixtures 63 passed through a pair of second mounting holes 425b, the upper frame inner member 61 is positioned at the second angle setting position B corresponding to the pair of second mounting holes 425b, as shown in Figure 13. Furthermore, when the upper frame inner member 61 is attached to the upper frame 42 by a pair of mounting fixtures 63 passed through a pair of intermediate mounting holes 425c, the upper frame inner member 61 is positioned at the intermediate angle setting position C corresponding to the pair of intermediate mounting holes 425c, as shown in Figure 11.

[0044] For example, if each mounting hole through which a pair of mounting fixtures 63 passes is changed from the intermediate mounting hole 425c to the first mounting hole 425a, the inclination angle of each hanging plate 62 with respect to the width direction X of the frame 4 when viewed from above becomes smaller, as shown in Figures 11 and 12. Also, for example, if each mounting hole through which a pair of mounting fixtures 63 passes is changed from the intermediate mounting hole 425c to the second mounting hole 425c, the inclination angle of each hanging plate 62 with respect to the width direction X of the frame 4 when viewed from above becomes larger, as shown in Figures 11 and 13. Thus, the inclination angle of each hanging plate 62 with respect to the width direction X of the frame 4 when viewed from above can be changed by changing the mounting hole through which the mounting fixtures 63 pass, among the first mounting hole 425a, second mounting hole 425b, and intermediate mounting hole 425c.

[0045] When the frame 4 is viewed from above, the inclination angle of the weight suspension wheel 7 with respect to the width direction X of the frame 4 changes in accordance with the change in the inclination angle of each suspension plate 62 with respect to the width direction X of the frame 4.

[0046] In this elevator counterweight device 3, a pair of openings 424 are formed in the upper frame 42. Part of each of the pair of openings 424 is formed in the upper plate portion 421 of the upper frame 42. The internal space of the upper frame 42 is open to the outside of the upper frame 42 through each of the openings 424. The upper frame internal member 61 is attached to the upper frame 42 while positioned in the internal space of the upper frame 42. Each of the pair of suspension plates 62 reaches above the upper frame 42 from the upper frame internal member 61 through each of the pair of openings 424. The counterweight suspension wheel 7 is attached to the pair of suspension plates 62 above the upper frame 42. Each suspension plate 62 is inclined with respect to the width direction X of the frame 4 when the frame 4 is viewed from above.

[0047] Therefore, it is no longer necessary to attach the suspension wheel mounting member 6 to the outer surface of the upper frame 42, and it is possible to suppress the suspension wheel mounting member 6 attached to the upper frame 42 from protruding outward from the outer surface of the upper frame 42. Consequently, the space required for the counterweight device 3 can be reduced, and the space of the elevator shaft 1 can be reduced.

[0048] Furthermore, the upper frame internal member 61 can be selectively positioned at one of several angle setting positions that result in different inclination angles of the suspension plate 62 with respect to the width direction X of the frame 4 when viewed from above. Therefore, by changing the selection of the angle setting position where the upper frame internal member 61 is positioned, the inclination angle of the suspension plate 62 with respect to the width direction X of the frame 4 when viewed from above can be changed. This makes it easy to change the inclination angle of the weight suspension wheel 7 with respect to the width direction X of the frame 4, even if it becomes necessary to change the inclination angle of the weight suspension wheel 7 with respect to the width direction X of the frame 4 due to differences in elevator types or other reasons.

[0049] Furthermore, the upper frame 42 is provided with multiple mounting holes 425a, 425b, and 425c corresponding to three angle setting positions A, B, and C. The upper frame inner member 61 is attached to the upper frame 42 by a mounting fixture 63 that is selectively passed through one of the multiple mounting holes 425a, 425b, and 425c. When the upper frame inner member 61 is attached to the upper frame 42 by the mounting fixture 63, the upper frame inner member 61 is positioned at the angle setting position corresponding to the mounting hole through which the mounting fixture 63 is passed, among the multiple mounting holes 425a, 425b, and 425c. Therefore, the upper frame inner member 61 can be attached to the upper frame 42 with a simple configuration, and the position of the upper frame inner member 61 attached to the upper frame 42 can be easily changed.

[0050] Furthermore, the edge portion of the upper plate portion 421 that forms the boundary with the opening 424 has two inclined portions 421a and 421b, which have different inclination angles with respect to the width direction X of the frame 4 when viewed from above. Of the three angle setting positions A, B, and C, two angle setting positions, namely the first angle setting position A and the second angle setting position B, are two reference positions corresponding to the two inclined portions 421a and 421b, respectively. When the upper frame inner member 61 is placed at either of the two reference positions, when the frame 4 is viewed from above, the suspension plate 62 is positioned along the inclined portion corresponding to the reference position where the upper frame inner member 61 is placed. Therefore, the upper frame inner member 61 can be attached to the upper frame 42 by aligning the suspension plate 62 with either of the two inclined portions 421a or 421b, making it easier to attach the suspension wheel mounting member 6 to the upper frame 42. In addition, the mounting state of the suspension wheel mounting member 6 to the upper frame 42 can be stabilized.

[0051] Embodiment 2. Figure 14 is a perspective view showing the upper frame internal member in the elevator counterweight device according to Embodiment 2. Figure 15 is a front view showing the upper frame internal member of Figure 14. Figure 16 is a cross-sectional view along the line XVI-XVI in Figure 15. The upper frame internal member 61 has a weight housing section 612 and a pair of upper frame internal weights 613.

[0052] The weight storage section 612 has a partition plate 612a and a pair of clamping plates 612b. The partition plate 612a is positioned so that its thickness direction coincides with the direction perpendicular to the vertical direction. The pair of clamping plates 612b face each other in the vertical direction, sandwiching the partition plate 612a. Each of the pair of clamping plates 612b is fixed to the partition plate 612a, for example, by welding. As a result, two spaces separated by the partition plate 612a are formed between the pair of clamping plates 612b.

[0053] The pair of upper frame weights 613 are housed in the weight housing section 612. The upper frame weights 613 are each positioned in two spaces formed in the weight housing section 612.

[0054] The pair of suspension plates 62 are fixed to the upper frame inner member 61 with the upper frame inner member 61 sandwiched between them in the thickness direction of the partition plate 612a. As a result, when the pair of suspension plates 62 are fixed to the upper frame inner member 61, the upper frame inner weights 613 are positioned in the space between each of the pair of suspension plates 62 and the partition plate 612a.

[0055] Each upper frame weight 613 has a plurality of first weight plates 613a and a plurality of second weight plates 613b. Each upper frame weight 613 is housed in the weight housing section 612 with the plurality of first weight plates 613a and the plurality of second weight plates 613b overlapping in the thickness direction of the partition plate 612a.

[0056] Steel plates or the like are used for the first weight plate 613a and the second weight plate 613b. The shapes of the first weight plate 613a and the second weight plate 613b are different rectangular shapes. The thickness of the first weight plate 613a is different from the thickness of the second weight plate 613b. For each upper frame weight 613, the first weight thickness dimension t1, which is formed by overlapping multiple first weight plates 613a, and the second weight thickness dimension t2, which is formed by overlapping multiple second weight plates 613b, are determined based on the shape of the clamping plate 612b. The size of the first weight thickness dimension t1 is adjusted by adjusting the number of first weight plates 613a. The size of the second weight thickness dimension t2 is adjusted by adjusting the number of second weight plates 613b. In the upper frame inner member 61, the proportion of the upper frame inner weight 613 within the space of the weight housing 612 can be increased by adjusting the respective sizes of the first weight thickness dimension t1 and the second weight thickness dimension t2. Furthermore, the weight of the counterweight device 3 can be finely adjusted by adjusting the respective number of the first weight plates 613a and the second weight plates 613b.

[0057] The upper frame inner member 61 is provided with multiple through-holes 614 for suspension plates. Each suspension plate through-hole 614 is a through-hole that penetrates the upper frame inner member 61 along the thickness direction of the partition plate 612a. As shown in Figure 16, each suspension plate through-hole 614 penetrates all of the first weight plates 613a and the second weight plates 613b of each upper frame inner weight 613, as well as the partition plate 612a. A pair of suspension plates 62 are fixed to the upper frame inner member 61 by multiple fasteners (not shown) that are passed through each of the multiple suspension plate through-holes 614. Fasteners such as bolts and nuts are used. Each suspension plate 62 is fixed to the upper frame inner member 61 by screwing nuts onto bolts that are passed through each of the through-holes (not shown) in each suspension plate 62 and the suspension plate through-holes 614, and tightening the bolts and nuts.

[0058] Each clamping plate 612b is provided with a pair of through-holes 615 for the upper frame. A pair of nuts 616 are also fixed to each clamping plate 612b. Each nut 616 is fixed to the clamping plate 612b in accordance with the position of each through-hole 615 for the upper frame. Each nut 616 is positioned between the pair of clamping plates 612b.

[0059] The upper frame inner member 61 is positioned in the internal space of the upper frame 42 with one clamping plate 612b positioned higher than the other clamping plate 612b. The upper frame inner member 61 is attached to the upper frame 42 by a pair of mounting fixtures 63 that are selectively passed through one of the multiple mounting holes 425a, 425b, and 425c. The upper frame inner member 61 is attached to the upper frame 42 by passing the mounting fixtures 63 through the upper frame through-holes 615 and screwing them into nuts 616. The other configurations are the same as in Embodiment 1.

[0060] In this type of elevator counterweight device 3, the upper frame internal member 61 has a weight housing section 612 and a pair of upper frame internal weights 613. The pair of upper frame internal weights 613 are housed in the weight housing section 612. Therefore, the upper frame internal weights 613, which are arranged in the internal space of the upper frame 42, can secure a portion of the weight required for the counterweight device 3. This reduces the weight of the weight body 5 mounted on the frame 4, thereby reducing the space occupied by the weight body 5. Consequently, the counterweight device 3 can be further reduced in size, and the space of the elevator shaft 1 can be further reduced.

[0061] In Embodiment 2, a pair of upper frame weights 613 are housed in the weight housing section 612. However, the shape of the weight housing section 612 may be changed so that only one upper frame weight 613 is housed in the weight housing section 612.

[0062] Furthermore, in Embodiment 2, the upper frame weight 613 has a plurality of first weight plates 613a and a plurality of second weight plates 613b. However, the upper frame weight 613 only needs to be made of a material that supplements the mass of the counterweight device 3, and for example, a single casting may be used as the upper frame weight 613 and housed in the weight housing section 612.

[0063] Furthermore, in Embodiment 2, the first weight plate 613a and the second weight plate 613b are rectangular in shape. However, the shapes of the first weight plate 613a and the second weight plate 613b are not limited to a rectangular shape; they can be any shape as long as they can be accommodated in the weight housing section 612.

[0064] Furthermore, in each of the above embodiments, the upper frame internal member 61 can be selectively positioned at any of the three angle setting positions A, B, and C. However, the upper frame internal member 61 may also be selectively positioned at any of two or more angle setting positions that cause the inclination angle of the suspension plate 62 with respect to the width direction X of the frame 4 when viewed from above to be different from each other. In this case, the upper frame 42 is provided with a plurality of mounting holes corresponding to each of the two or more angle setting positions. In this case, the upper frame internal member 61 is attached to the upper frame 42 by a mounting fixture 63 that is selectively passed through any of the plurality of mounting holes.

[0065] Furthermore, in each of the above embodiments, if the upper frame internal member 61 can be selectively positioned at any of three or more angle setting positions, three or more inclined portions may be formed on the edge of the upper plate portion 421 that forms the boundary with the opening 424. In this case, the inclination angles of each of the three or more inclined portions with respect to the width direction X of the frame 4 when viewed from above are different from each other. Also, in this case, of the three or more angle setting positions, the same number of angle setting positions as the inclined portions are designated as three or more reference positions corresponding to each of the three or more inclined portions. As a result, when the upper frame internal member 61 is positioned at any of the three or more reference positions, when the frame 4 is viewed from above, the suspension plate 62 is positioned along the inclined portion corresponding to the reference position where the upper frame internal member 61 is positioned.

[0066] Furthermore, in each of the above embodiments, a portion of the opening 424 is formed in the upper plate portion 421, and the remaining portion of the opening 424 is formed in the opposing plate portion 422. However, the opening 424 does not have to be formed in the opposing plate portion 422. That is, the entire opening 424 may be formed in the upper plate portion 421. Therefore, in the upper frame 42, it is sufficient that at least a portion of the opening 424 is formed in the upper plate portion 421.

[0067] Furthermore, in each of the above embodiments, the weight suspension wheel 7 is attached to a pair of suspension plates 62. However, the weight suspension wheel 7 may be attached to only one suspension plate 62, as long as the suspension plate 62 can support the load applied from the weight suspension wheel 7. In this case, the number of openings 424 formed in the upper frame 42 is one.

[0068] The configurations shown in the embodiments described above are merely examples of the content of this disclosure. The embodiments can be combined with other known technologies. Some parts of the configurations of the embodiments can be omitted or modified without departing from the gist of this disclosure.

[0069] Examples of aspects that may be included in this disclosure are listed below as an addendum. (Note 1) Frame and, The weight body mounted on the frame, The suspension wheel mounting member attached to the frame, The weight suspension wheel attached to the suspension wheel mounting member and Equipped with, The frame is positioned so that its width coincides with the horizontal direction. The frame comprises a pair of vertical frames facing each other in the width direction of the frame, an upper frame fixed between the upper ends of the pair of vertical frames, and a lower frame fixed between the lower ends of the pair of vertical frames. The upper frame has an upper plate portion on which the upper surface of the upper frame is formed, An opening is formed in the upper frame. At least a portion of the opening is formed in the upper plate portion, The internal space of the upper frame is open to the outside of the upper frame through the opening. The suspension traction member comprises an upper frame internal member that is attached to the upper frame while being positioned in the internal space of the upper frame, and a suspension plate that is attached to the upper frame internal member and extends from the upper frame internal member through the opening to the upper part of the upper frame. The aforementioned weight suspension wheel is attached to the suspension plate above the upper frame, The aforementioned suspension plate is an elevator counterweight device that, when viewed from above, is inclined with respect to the width direction of the frame. (Note 2) The elevator counterweight device according to Appendix 1, wherein the upper frame internal member can be selectively positioned at one of a plurality of angle setting positions that cause the inclination angles of the suspension plate with respect to the width direction of the frame to be different from each other when the frame is viewed from above. (Note 3) The upper frame is provided with a plurality of mounting holes corresponding to the plurality of angle setting positions. The upper frame internal member is attached to the upper frame by a mounting device selectively passed through one of the plurality of mounting holes. The elevator counterweight device according to Appendix 2, wherein, when the upper frame inner member is attached to the upper frame by the mounting fixture, the upper frame inner member is positioned at the angle setting position corresponding to the mounting hole through which the mounting fixture passes. (Note 4) In the upper plate portion, the edge portion forming the boundary with the opening has two or more inclined portions formed thereon, each having a different angle of inclination with respect to the width direction of the frame when viewed from above. Of the plurality of angle setting positions, two or more of the angle setting positions are two or more reference positions corresponding to the two or more inclined portions. The elevator counterweight device according to Appendix 2 or Appendix 3, wherein when the upper frame internal member is positioned at any of the two or more reference positions, the suspension plate is positioned along the inclined portion corresponding to the reference position where the upper frame internal member is positioned when the frame is viewed from above. (Note 5) The elevator counterweight device according to any one of the appendices 1 to 4, wherein the upper frame internal member has a weight housing section and an upper frame internal weight housed in the weight housing section. [Explanation of Symbols]

[0070] 4 Frame body, 5 Weight body, 6 Hanging wheel mounting member, 7 Weight hanging wheel, 41 Vertical frame, 42 Upper frame, 43 Lower frame, 61 Upper frame inner member, 62 Hanging plate, 63 Mounting device, 421 Upper plate section, 421a First inclined section (inclined section), 421b Second inclined section (inclined section), 424 Opening, 425a First mounting hole (mounting hole), 425b Second mounting hole (mounting hole), 425c Intermediate mounting hole (mounting hole), 612 Weight storage section, 613 Upper frame inner weight.

Claims

1. Frame and, The weight body mounted on the frame, The suspension wheel mounting member attached to the frame, The weight suspension wheel attached to the suspension wheel mounting member and Equipped with, The frame is positioned so that its width coincides with the horizontal direction. The frame comprises a pair of vertical frames facing each other in the width direction of the frame, an upper frame fixed between the upper ends of the pair of vertical frames, and a lower frame fixed between the lower ends of the pair of vertical frames. The upper frame has an upper plate portion on which the upper surface of the upper frame is formed, An opening is formed in the upper frame. At least a portion of the opening is formed in the upper plate portion, The internal space of the upper frame is open to the outside of the upper frame through the opening. The suspension traction member comprises an upper frame internal member that is attached to the upper frame while being positioned in the internal space of the upper frame, and a suspension plate that is fixed to the upper frame internal member and extends from the upper frame internal member through the opening to the upper part of the upper frame. The aforementioned weight suspension wheel is attached to the suspension plate above the upper frame, The aforementioned suspension plate is an elevator counterweight device that, when viewed from above, is inclined with respect to the width direction of the frame.

2. The elevator counterweight device according to claim 1, wherein the upper frame internal member can be selectively positioned at one of a plurality of angle setting positions that cause the inclination angles of the suspension plate with respect to the width direction of the frame to be different from each other when the frame is viewed from above.

3. The upper frame is provided with a plurality of mounting holes corresponding to the plurality of angle setting positions. The upper frame internal member is attached to the upper frame by a mounting device selectively passed through one of the plurality of mounting holes. The elevator counterweight device according to claim 2, wherein, when the upper frame inner member is attached to the upper frame by the mounting fixture, the upper frame inner member is positioned at the angle setting position corresponding to the mounting hole through which the mounting fixture passes.

4. In the upper plate portion, the edge portion forming the boundary with the opening has two or more inclined portions formed thereon, each having a different inclination angle with respect to the width direction of the frame when viewed from above. Of the plurality of angle setting positions, two or more of the angle setting positions are two or more reference positions corresponding to the two or more inclined portions. The elevator counterweight device according to claim 2 or 3, wherein when the upper frame internal member is positioned at any of the two or more reference positions, the suspension plate is positioned along the inclined portion corresponding to the reference position where the upper frame internal member is positioned when the frame is viewed from above.

5. The elevator counterweight device according to any one of claims 1 to 3, wherein the upper frame internal member comprises a weight housing section and an upper frame internal weight housed in the weight housing section.

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