Elevator system

Abstract

The utility model relates to an elevator system, which comprises a lift car, a counterweight and a rope winding system, wherein the lift car ascends and descends in a hoistway, and the counterweight is arranged on the side of the lift car and ascends and descends in the hoistway. The rope winding system comprises a first counterweight wheel, a second counterweight wheel, a first car bottom wheel, a second car bottom wheel, a third car bottom wheel, a fourth car bottom wheel, a traction wheel, a counterweight rope fixing wheel, a car rope fixing wheel, a car rope head assembly and a counterweight rope head assembly, the traction steel wire rope is wound according to the following sequence: a lift car rope head assembly, a first car bottom wheel, a second car bottom wheel, a lift car rope fixing wheel, a fourth car bottom wheel, a third car bottom wheel, a traction wheel, a first counterweight wheel, a counterweight rope fixing wheel, a second counterweight wheel and a counterweight rope head assembly; the elevator system further comprises an equipment setting table arranged near the top of a hoistway; the traction wheel is connected with a traction machine arranged on the equipment arrangement platform, the rotation axis of the traction wheel is parallel to the side wall of the lift car, and the traction machine and the traction wheel are separated relative to the lift car in a plan view.

Description

TECHNICAL FIELD

[0001] The utility model relates to an elevator system, especially an elevator system with a 4:1 roping ratio. BACKGROUND

[0002] In recent years, there is an increasing demand for large-capacity load elevators with a load capacity exceeding 2500 kg in hospitals, airports, shopping centers, and other places. In response to this demand, the existing elevator system with a 2:1 roping ratio is technically difficult to achieve such a large-capacity load, and even if it can be achieved, the manufacturing and installation costs will be very high.

[0003] In addition, the demand for such large-capacity load can be relatively easily met by an elevator system with a 4:1 roping ratio. Therefore, the elevator system with a 4:1 roping ratio has been developed over time, and various technical solutions have been proposed, for example.

[0004] In patent document 1, a 4:1 elevator traction structure is proposed, as shown in Figure 3 , its roping system includes one traction sheave, two counterweight sheaves, one counterweight fixed sheave, two car top sheaves, one car fixed sheave, one traction machine guide sheave, car rope head assembly, counterweight rope head assembly. In the technical solution of patent document 1, the structure of the car top sheave is adopted, that is, all the structures included in the roping system are located above the car. In the traction structure disclosed in patent document 1, since the roping system is located above the car, the demand for the top space of the shaft is large, which reduces the utilization rate of the shaft, and the traction steel wire rope is bent at a small bending angle, so the fatigue degree of the traction steel wire rope is increased, thereby reducing the service life of the steel wire rope, and also generating a large noise.

[0005] In patent document 2, a 4:1 counterweight side middle no-machine-room elevator is proposed, as shown in Figure 4 , its roping system includes one traction sheave, two counterweight sheaves, one counterweight fixed sheave, four car bottom sheaves, two car fixed sheaves, car rope head assembly, counterweight rope head assembly. In the technical solution of patent document 2, the structure of one counterweight fixed sheave and two car fixed sheaves is adopted, and the rotation axis of the traction sheave is parallel to the rotation axes of the counterweight fixed sheave and the car fixed sheave. In the no-machine-room elevator disclosed in patent document 2, since the number of car fixed sheaves is large, the wrap angle of the traction steel wire rope relative to the car fixed sheave will be reduced, which will cause the steel wire rope to slip easily and increase the failure rate. Moreover, since the number of car fixed sheaves is large, the vibration noise will be increased, and the manufacturing cost and installation cost of the roping system will also be increased.

[0006] Patent document 1: CN202010747923.9

[0007] Patent document 2: CN202310581708.X Utility model content

[0008] The utility model discloses based on above problem point and carries out, its purpose is to provide a kind of elevator system with 4 ratio 1's rope winding ratio, can realize 2500kg~4500kg Large-capacity load, and can reduce cost, improve hoistway utilization, elevator service life and system stability.

[0009] The utility model discloses an elevator system, with 4 ratio 1's rope winding ratio, wherein, the elevator system includes the car that is lifted in hoistway, the counterweight that is set in the side of car and is lifted in hoistway, and rope winding system, the rope winding system includes the 1st and 2nd counterweight wheel that is set to the upper surface of counterweight, the 1st to 4th car bottom wheel that is set to the lower surface of car, and the traction sheave that is set to the top near of hoistway, counterweight fixed rope wheel, car fixed rope wheel, car rope head assembly, counterweight rope head assembly, in the rope winding system, traction wire rope is wound as follows in order: car rope head assembly, the 1st car bottom wheel, the 2nd car bottom wheel, car fixed rope wheel, the 4th car bottom wheel, the 3rd car bottom wheel, the traction sheave, the 1st counterweight wheel, counterweight fixed rope wheel, the 2nd counterweight wheel, counterweight rope head assembly, the elevator system further includes the equipment setting platform that is set to the top near of hoistway, the traction sheave is connected with the traction sheave that is set to the equipment setting platform, the rotation axis of traction sheave is parallel with the side wall of car, when looking from above, the traction sheave and the traction sheave are separated relative to car.

[0010] In the elevator system involved in the embodiment of the utility model, the 1st counterweight wheel and the 2nd counterweight wheel are preferably symmetrically arranged relative to the center line of the counterweight, and the rotation axes of the 1st counterweight wheel and the 2nd counterweight wheel are perpendicular to the side wall of the car.

[0011] In the elevator system involved in the embodiment of the utility model, the counterweight fixed rope wheel is preferably located between the 1st counterweight wheel and the 2nd counterweight wheel when viewed from above, and the rotation axis of the counterweight fixed rope wheel is perpendicular to the side wall of the car.

[0012] In the elevator system involved in the embodiment of the utility model, the 1st to 4th car bottom wheels are preferably arranged on the lower surface of the car at positions symmetrically arranged relative to the left-right center line and the front-rear center line passing through the center of the lower surface, and the rotation axes of the 1st to 4th car bottom wheels are parallel to the side wall of the car.

[0013] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the car fixed rope wheel is located between the 2nd car bottom wheel and the 4th car bottom wheel, and the 2nd car bottom wheel and the 4th car bottom wheel are arranged on the lower surface of the car on the side away from the counterweight.

[0014] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the car rope head assembly is located in a position overlapping the 1st car bottom wheel.

[0015] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the counterweight rope head assembly is located in a position overlapping the 2nd counterweight wheel.

[0016] Another embodiment of the present application relates to an elevator system with a 4:1 roping ratio, wherein the elevator system comprises a car that ascends and descends in a hoistway, a counterweight that is arranged on the side of the car and ascends and descends in the hoistway, and a roping system, the roping system comprising a 1st and a 2nd counterweight wheel arranged on the upper surface of the counterweight, a 1st to a 4th car bottom wheel arranged on the lower surface of the car, and a traction sheave, a counterweight fixed rope wheel, a car fixed rope wheel, a car rope head assembly, and a counterweight rope head assembly arranged near the top of the hoistway, wherein the traction steel wire rope is roped in the following order in the roping system: the car rope head assembly, the 1st car bottom wheel, the 2nd car bottom wheel, the car fixed rope wheel, the 4th car bottom wheel, the 3rd car bottom wheel, the traction sheave, the 1st counterweight wheel, the counterweight fixed rope wheel, the 2nd counterweight wheel, and the counterweight rope head assembly, and wherein the 1st to the 4th car bottom wheels are arranged on the lower surface of the car at positions symmetrical with respect to a left-right center line and a front-rear center line that pass through the center of the lower surface, and the rotation axes of the 1st to the 4th car bottom wheels are parallel to the side wall of the car.

[0017] In the elevator system according to the embodiment of the present application, preferably, the elevator system further comprises an equipment setting platform arranged near the top of the hoistway, the traction sheave is connected to a traction machine arranged on the equipment setting platform, the rotation axis of the traction sheave is parallel to the side wall of the car, and in a plan view, the traction machine and the traction sheave are separated from the car.

[0018] In the elevator system according to the embodiment of the present application, preferably, the 1st counterweight wheel and the 2nd counterweight wheel are symmetrically arranged with respect to the center line of the counterweight, and the rotation axes of the 1st counterweight wheel and the 2nd counterweight wheel are perpendicular to the side wall of the car.

[0019] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the counterweight rethreading wheel is located between the first counterweight wheel and the second counterweight wheel, and the rotation axis of the counterweight rethreading wheel is perpendicular to the side wall of the car.

[0020] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the car rethreading wheel is located between the second car bottom wheel and the fourth car bottom wheel, and the second car bottom wheel and the fourth car bottom wheel are located on the side of the car away from the counterweight.

[0021] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the car rethreading wheel is located between the second car bottom wheel and the fourth car bottom wheel, and the second car bottom wheel and the fourth car bottom wheel are located on the side of the car away from the counterweight.

[0022] In the elevator system according to the embodiment of the present application, preferably, in a plan view, the car rethreading wheel is located between the second car bottom wheel and the fourth car bottom wheel, and the second car bottom wheel and the fourth car bottom wheel are located on the side of the car away from the counterweight.

[0023] Effects of the present application

[0024] According to the above technical scheme of the present application, by adopting the car bottom wheel structure and only providing one car rethreading wheel, the top space of the shaft can be reduced, the utilization rate of the shaft can be effectively improved, the steel wire rope bending fatigue and vibration noise caused by the car top wheel structure can be effectively avoided, the problems of small steel wire rope angle and high failure rate caused by the structure of two car rethreading wheels can be effectively avoided, the service life and overall performance of the elevator can be improved. Moreover, since the position of the traction machine does not overlap with the car, the top gap is reduced, and maintenance is convenient. Moreover, since the rotation axis of the traction wheel is parallel to the side wall of the car, the problem of steel wire rope slipping caused by the torsion of the steel wire rope relative to other rope wheels can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic view showing the planar layout of the elevator shaft according to the embodiment of the present application, with the roping ratio being 4:1.

[0026] Figure 2 is a schematic view showing the overall structure of the elevator according to the embodiment of the present application, with the roping ratio being 4:1.

[0027] Figure 3 is a schematic view showing the traction structure of the existing elevator, with the roping ratio being 4:1.

[0028] Figure 4 is a schematic view showing the traction structure of the existing elevator, with the roping ratio being 4:1.

[0029] Explanation of symbols

[0030] 1: traction sheave; 2-1: 1st counterweight sheave; 2-2: 2nd counterweight sheave; 3: counterweight rope fixing sheave; 4-1: 1st car bottom sheave; 4-2: 2nd car bottom sheave; 4-3: 3rd car bottom sheave; 4-4: 4th car bottom sheave; 5: car rope fixing sheave; 6: counterweight rope head assembly; 7: car rope head assembly; 8: counterweight; 9: car; 10-1, 10-2: counterweight guide rail; 11-1, 11-2: car guide rail; 12: traction rope; C: car lower surface center; D: elevator door; X: left-right direction; Y: front-rear direction. DETAILED DESCRIPTION

[0031] Hereinafter, the embodiment of the present application will be described in detail with reference to the drawings. Figure 1 is a schematic view showing the planar layout of the elevator shaft of the embodiment of the present application, in which the roping ratio is 4:1. Figure 1 A plan view of the elevator system is shown in

[0032] In the elevator system of the present embodiment, a counterweight 8, a car 9, a counterweight guide rail 10-1, a counterweight guide rail 10-2, a car guide rail 11-1, a car guide rail 11-2, and a roping system are provided in the shaft.

[0033] Regarding the car 9, the car lower surface center (hereinafter, sometimes simply referred to as the center) thereof when viewed from above is set as C, a left-right center line passing through the center C and perpendicular to the side wall of the car 9 is set as the X-axis, i.e., the direction along the X-axis in the drawing is set as the left-right direction of the elevator car, and a front-rear center line passing through the center C and perpendicular to the X-axis is set as the Y-axis, i.e., the direction along the Y-axis in the drawing is set as the front-rear direction of the elevator car, wherein the front direction is the direction in which the elevator door D is located. The car 9 is divided into four quadrants (indicated as (one), (two), (three), and (four) in Figure 1 , respectively) by the above-mentioned center C, X-axis, and Y-axis.

[0034] Regarding the counterweight 8, the plan view thereof is rectangular, and the long side direction of the rectangle is parallel to the side wall of the car 9, i.e., the Y-axis. The counterweight 8 is provided in the shaft at a position near the side of the car 9 and close to the shaft side wall, and the center (not shown) of the counterweight 8 is located at a position further to the rear than the X-axis, i.e., the center C of the car 9, further, the counterweight 8 is provided at the side of the car 9 across the 1st quadrant and the 3rd quadrant of the car 9.

[0035] Counterweight guide rails 10-1, 10-2 are provided on both sides of the long side of the counterweight 8 in the short side direction, and the counterweight 8 is guided by the counterweight guide rails 10-1, 10-2 when ascending or descending in the shaft. Car guide rails 11-1, 11-2 are provided on both sides of the car 9, and the car 9 is guided by the car guide rails 11-1, 11-2 when ascending or descending in the shaft. The upper ends of the counterweight guide rails 10-1, 10-2 and the car guide rails 11-1, 11-2 are fixed to an equipment installation platform (not shown) provided at a position on or near the ceiling of the shaft.

[0036] In the elevator system of the present embodiment, the roping system includes a traction sheave 1, a first counterweight sheave 2-1, a second counterweight sheave 2-2, a counterweight rope regulator 3, a first car sheave 4-1, a second car sheave 4-2, a third car sheave 4-3, a fourth car sheave 4-4, a car rope regulator 5, a counterweight rope head assembly 6, and a car rope head assembly 7.

[0037] The traction sheave 1 is rotationally driven in connection with an output shaft of a traction machine (not shown) provided on an equipment installation platform at the top of the shaft. The rotational axis of the traction sheave 1 is parallel to the Y-axis direction, and thus the traction machine is also provided in the Y-axis direction. Figure 1 In the plan view shown, the traction sheave 1 is positioned side by side with the third car sheave 4-3.

[0038] Thus, in the present embodiment, since the positions of the traction machine and the traction sheave 1 do not overlap the position of the car 9, the car 9 can be brought closer to the ceiling of the shaft when ascending, and thus the idle space of the ceiling of the shaft can be reduced, the utilization of the space at the top of the shaft can be improved, and the utilization of the space of the shaft can be further improved. Also, since the positions of the traction machine and the traction sheave 1 do not overlap the position of the car 9, the maintenance of the traction machine and the traction sheave 1 is also more convenient.

[0039] The first counterweight sheave 2-1 and the second counterweight sheave 2-2 are provided on the upper surface of the counterweight 8 at positions symmetrical with respect to a center line passing through the center of the counterweight 8 and parallel to the X-axis direction. The rotational axes of the first counterweight sheave and the second counterweight sheave are parallel to the X-axis direction.

[0040] The counterweight rope regulator 3 is provided on the equipment installation platform. In the plan view shown, the counterweight rope regulator 3 is positioned between the first counterweight sheave 2-1 and the second counterweight sheave 2-2. The rotational axis of the counterweight rope regulator 3 is parallel to the X-axis direction. Figure 1 In the plan view shown, the counterweight rope regulator 3 is positioned between the first counterweight sheave 2-1 and the second counterweight sheave 2-2. The rotational axis of the counterweight rope regulator 3 is parallel to the X-axis direction.

[0041] The 1st car bottom sheave 4-1, the 2nd car bottom sheave 4-2, the 3rd car bottom sheave 4-3, and the 4th car bottom sheave 4-4 are provided on the lower surface of the car 9 in the 1st to 4th quadrants, respectively. Specifically, the 1st car bottom sheave 4-1 and the 3rd car bottom sheave 4-3, and the 2nd car bottom sheave 4-2 and the 4th car bottom sheave 4-4 are provided at positions symmetrical with respect to the X axis, respectively. The 1st car bottom sheave 4-1 and the 2nd car bottom sheave 4-3, and the 3rd car bottom sheave 4-2 and the 4th car bottom sheave 4-4 are provided at positions symmetrical with respect to the Y axis, respectively. By thus configuring the four car bottom sheaves, the load of the car 9 can be supported in balance, and the operation of the car 9 can be stabilized. In Figure 1 In the plan view shown in FIG. 6, the 1st car bottom sheave 4-1, the 2nd car bottom sheave 4-2, the 3rd car bottom sheave 4-3, and the 4th car bottom sheave 4-4 protrude outward from the lower surface of the car 9 to the side wall, so that the hoisting wire rope 12 passes by the side of the car 9.

[0042] The car fixed sheave 5 is provided on the equipment setting platform. In Figure 1 In the plan view shown in FIG. 6, the car fixed sheave 5 is located above the car guide rail 11-1, and the car fixed sheave 5 is located between the 2nd car bottom sheave 4-2 and the 4th car bottom sheave 4-4 and partially overlaps the 2nd car bottom sheave 4-2 and the 4th car bottom sheave 4-4. The rotation axis of the car fixed sheave 5 is parallel to the X axis direction.

[0043] The counterweight rope head assembly 6 and the car rope head assembly 7 are provided on the equipment setting platform. In Figure 1 In the plan view shown in FIG. 6, the counterweight rope head assembly 6 is located at a position overlapping the 2nd counterweight sheave 2-2, and the car rope head assembly 7 is located at a position overlapping the 1st car bottom sheave.

[0044] In the roping system of the present embodiment, the hoisting wire rope 12 is roped in the following order: the car rope head assembly 7, the 1st car bottom sheave 4-1, the 2nd car bottom sheave 4-2, the car fixed sheave 5, the 4th car bottom sheave 4-4, the 3rd car bottom sheave 4-3, the hoisting sheave 1, the 1st counterweight sheave 2-1, the counterweight fixed sheave 3, the 2nd counterweight sheave 2-2, and the counterweight rope head assembly 6. Specifically, one end of the hoisting wire rope 12 is fixed to the car rope head assembly 7, and from the car rope head assembly 7, the hoisting wire rope 12 is passed downward from below the 1st car bottom sheave 4-1 and the 2nd car bottom sheave 4-2, upward from above the car fixed sheave 5, downward from below the 4th car bottom sheave 4-4 and the 3rd car bottom sheave 4-3, upward from above the hoisting sheave 1, downward from below the 1st counterweight sheave 2-1, upward from above the counterweight fixed sheave 3, downward from below the 2nd counterweight sheave 2-2, and reaches the counterweight rope head assembly 6 and is fixed.

[0045] In the rope winding system of the present embodiment, a 4:1 rope winding ratio is achieved by adopting the car bottom wheel structure, thereby enabling a large capacity load of 2500 kg or more, and further enabling a large capacity load of 2500 kg to 4500 kg.

[0046] Also, in the rope winding system of the present embodiment, only one car fixing rope wheel 5 is adopted, thereby enabling a reduction in manufacturing and installation costs compared to the conventional configuration, and enabling an increase in hoistway utilization, an increase in elevator service life, and an increase in system stability.

[0047] In addition, in Figure 2 In the present embodiment, the hoisting rope 12 is represented by a solid line, but in an actual elevator system, the hoisting rope 12 is a rope set composed of a plurality of (generally 8 to 12) steel ropes, and a plurality of rope grooves for engaging the plurality of steel ropes are provided on each of the rope wheels.

[0048] In the rope winding system of the present embodiment, the equipment setting table for setting various equipment is provided as described above, but the equipment setting table can be omitted and the hoisting machine, the hoisting wheel 1, the counterweight fixing rope wheel 3, the counterweight rope head assembly 6, the car rope head assembly 7, the car fixing rope wheel 5, and the like can be directly provided in the hoistway top machine room.

[0049] Several embodiments of the present application have been described, but these embodiments are presented as examples and are not intended to limit the scope of the application. These embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made within the scope of the main idea of the application. These embodiments, their modifications, and the application and its equivalents as described in the scope of the claims are included in the scope and main idea of the application.

Claims

1. An elevator system having a roping ratio of 4 to 1, wherein the elevator system includes a car that ascends and descends in a hoistway, a counterweight that is disposed laterally to the car and ascends and descends in the hoistway, and a roping system, the roping system includes a first and second counterweight sheave disposed on an upper surface of the counterweight, a first to fourth car sheave disposed on a lower surface of the car, and a traction sheave, a counterweight equalizing sheave, a car equalizing sheave, a car rope head assembly, and a counterweight rope head assembly disposed near a top of the hoistway, in the roping system, a traction rope is roped in the following order: the car rope head assembly, the first car sheave, the second car sheave, the car equalizing sheave, the fourth car sheave, the third car sheave, the traction sheave, the first counterweight sheave, the counterweight equalizing sheave, the second counterweight sheave, and the counterweight rope head assembly, the elevator system further includes an equipment setting platform disposed near the top of the hoistway, the traction sheave is connected to a traction machine disposed on the equipment setting platform, and a rotation axis of the traction sheave is parallel to a lateral wall of the car, in a plan view, the traction machine and the traction sheave are separated from the car.

2. The elevator system according to claim 1, wherein the first counterweight sheave and the second counterweight sheave are disposed symmetrically with respect to a center line of the counterweight, rotation axes of the first counterweight sheave and the second counterweight sheave are perpendicular to the lateral wall of the car.

3. The elevator system according to claim 1, wherein in a plan view, the counterweight equalizing sheave is positioned between the first counterweight sheave and the second counterweight sheave, a rotation axis of the counterweight equalizing sheave is perpendicular to the lateral wall of the car.

4. The elevator system according to claim 1, wherein the first to fourth car sheaves are disposed on the lower surface of the car at positions that are symmetric with respect to left and right center lines and front and rear center lines that pass through a center of the lower surface, rotation axes of the first to fourth car sheaves are parallel to the lateral wall of the car.

5. The elevator system according to claim 4, wherein in a plan view, the car equalizing sheave is positioned between the second car sheave and the fourth car sheave, the second car sheave and the fourth car sheave are disposed on the lower surface of the car at a side that is distal from the counterweight.

6. The elevator system according to claim 1, wherein in a plan view, the car rope head assembly is positioned at a position that overlaps the first car sheave.

7. The elevator system according to claim 1, wherein in a plan view, the counterweight rope head assembly is positioned at a position that overlaps the second counterweight sheave.

8. An elevator system having a roping ratio of 4 to 1, wherein the elevator system includes a car that ascends and descends in a hoistway, a counterweight that is disposed laterally to the car and ascends and descends in the hoistway, and a roping system, the roping system includes a first and second counterweight sheave disposed on an upper surface of the counterweight, a first to fourth car sheave disposed on a lower surface of the car, and a traction sheave, a counterweight equalizing sheave, a car equalizing sheave, a car rope head assembly, and a counterweight rope head assembly disposed near a top of the hoistway, In the roping system, the traction rope is roped in the following order: The car rope head assembly, the 1st car bottom wheel, the 2nd car bottom wheel, the car roping wheel, the 4th car bottom wheel, the 3rd car bottom wheel, the traction sheave, the 1st counterweight wheel, the counterweight roping wheel, the 2nd counterweight wheel, the counterweight rope head assembly, The 1st to 4th car bottom wheels are disposed on the lower surface of the car at positions symmetrical with respect to left and right center lines and front and rear center lines that pass through the center of the lower surface, The rotation axes of the 1st to 4th car bottom wheels are parallel to the side wall of the car.

9. The elevator system according to claim 8, wherein The elevator system further includes an equipment installation platform disposed near the top of the hoistway, The traction sheave is connected to a traction machine disposed on the equipment installation platform, and the rotation axis of the traction sheave is parallel to the side wall of the car, The traction machine and the traction sheave are separated from the car when viewed from above.

10. The elevator system according to claim 8, wherein The 1st counterweight wheel and the 2nd counterweight wheel are disposed symmetrically with respect to the center line of the counterweight, The rotation axes of the 1st counterweight wheel and the 2nd counterweight wheel are perpendicular to the side wall of the car.

11. The elevator system according to claim 8, wherein The counterweight roping wheel is located between the 1st counterweight wheel and the 2nd counterweight wheel when viewed from above, The rotation axis of the counterweight roping wheel is perpendicular to the side wall of the car.

12. The elevator system according to claim 8, wherein The car roping wheel is located between the 2nd car bottom wheel and the 4th car bottom wheel when viewed from above, The 2nd car bottom wheel and the 4th car bottom wheel are disposed on the lower surface of the car on the side away from the counterweight.

13. The elevator system according to claim 8, wherein The car rope head assembly is located overlapping the 1st car bottom wheel when viewed from above.

14. The elevator system according to claim 8, wherein The counterweight rope head assembly is located overlapping the 2nd counterweight wheel when viewed from above.

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