JP4145977B2 - elevator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a traction type elevator that eliminates the need for a machine room in which a drive device is installed.
[0002]
[Prior art]
In recent years, linear motor elevators, elevators equipped with hoisting machines in the gaps of hoistway walls, etc. have been devised for the purpose of eliminating the machine room of the rope type elevator installed at the top of the hoistway due to the problem of sunlight. .
[0003]
FIG. 16 shows an outline of an elevator in which an armature of a cylindrical linear motor 51 is incorporated in a counterweight 50 as described in, for example, JP-A-2-23492. In this example, an elevator drive mechanism is incorporated in the counterweight 50, whereby the car 52 is driven up and down via a rope, eliminating the need for a machine room of a conventional rope type elevator.
[0004]
17 and 18 show that the hoisting machine 53 is placed in the gap between the hoistway wall at the top of the hoistway 54 and the side surface of the car 55 as described in Japanese Utility Model Publication No. 4-50297 and Japanese Patent No. 2593288. The outline of the installed elevator is shown.
[0005]
[Problems to be solved by the invention]
The linear motor elevator described with reference to FIG. 16 has the advantage of eliminating the need for a conventional machine room, but it is necessary to install an overhead sheave for hanging the car above the hoistway car. For this reason, the height of the hoistway itself becomes high and protrudes from the roof of the building, so it cannot be said that a sufficient effect is achieved. Further, since the driving device is attached to the counterweight, there is a problem that the plane dimension of the counterweight increases, and the effective area of the building decreases because the plane dimension of the hoistway increases.
[0006]
Further, in the example in which the driving device is installed in the gap between the hoistway wall at the top of the hoistway described in FIG. 17 and the car lateral surface, the rotational surface of the drive sheave is arranged in a shape orthogonal to the car lateral surface. The size of the gap between the car and the wall has to be larger than that of a normal elevator, and there is a problem that the effective use area of the building is reduced as in the case of the linear motor elevator.
[0007]
In another example shown in FIG. 18, when the rated load of the car increases, the hoisting motor and the traction sheave increase in thickness, so that they cannot fit in the clearance between the carriage and the hoistway wall, and the elevator is large. It may be impossible to cope with the change. In addition, since the return car is provided in the car, the structure is complicated, the number of parts is increased, and there are problems in terms of cost and labor for installation and maintenance.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a traction type elevator without a machine room, in which the plane dimension of the hoistway and the height dimension in the hoistway top direction can be kept small.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention corresponding to claim 1
A car that is guided by a pair of left and right car guide rails and goes up and down in the hoistway,
A counterweight which is guided by a pair of right and left counterweight guide rails and moves up and down the back side of the car;
A traction sheave rotating around an axis that is disposed at the top of the hoistway and extends horizontally in the left-right direction;
A drive device that is arranged coaxially with the traction sheave and that rotationally drives the traction sheave;
A suspension rope that is wound around the traction sheave and suspends the car and the counterweight in a fishing bottle shape,
It said drive device, when viewed from the upper side in the vertical direction, a part is disposed above the counterweight to overlap with the car Rutotomoni, than the frame outer diameter the diameter of the traction sheave small,
When the traction sheave is viewed from above in the vertical direction, a part of the sheave is located in a space between the inner wall surface of either the left or right side of the hoistway and the left or right side wall of the car, In addition, the remaining portion is arranged in a space between the inner wall surface on either the left or right side of the hoistway and the side wall facing the inner wall surface on the left or right side of the hoistway of the counterweight. Established,
The suspension rope is an elevator characterized in that one end thereof is connected to a hitch portion provided to face either the left or right side wall of the car.
[0010]
As a result, even when the car rises to the vicinity of the top of the hoistway, the car does not interfere with the traction sheave, so that the size of the hoistway top of the driving device can be kept low, and the level of the hoistway can be reduced. The cross-sectional dimension can be kept small.
Moreover, even in the case of a hoistway where the dimension in the entrance / exit width direction cannot be increased, the elevator can be installed without increasing the hoistway dimensions.
[0011]
The invention corresponding to claim 2 is the elevator of the invention of claim 1,
A second traction sheave disposed coaxially with the traction sheave and driven to rotate integrally by the drive device;
A second suspension rope wound around the second traction sheave and suspending the car and the counterweight in the shape of a fishing bottle;
When the second traction sheave is viewed from above in the vertical direction, a part of the second traction sheave is in a space between the left and right inner wall surfaces of the hoistway and the left and right side walls of the car. And the remaining portion is located in a space between the left and right inner wall surface of the hoistway and the side wall of the counterweight facing the left and right inner wall surface of the hoistway. Arranged so that
One end of the second suspension rope is connected to a second hitch portion provided on either the left or right side wall of the car.
Thereby, a car can be raised / lowered stably.
[0012]
The invention corresponding to claim 3 is the elevator according to claim 1 or 2, wherein the hitch portion is provided below the ceiling surface of the car.
According to a fourth aspect of the present invention, in the elevator according to the third aspect of the present invention, the hitch portion is provided at a lower portion of the car.
Thereby, while being able to suppress the dimension of the hoistway top part direction low, simplification of the structure of a cage frame and weight reduction can be achieved.
[0013]
The invention corresponding to claim 5 is the elevator according to claim 2, further comprising a deflecting sheave supported on either the left or right of the pair of left and right car guide rails,
The second suspension rope is wound around the traction sheave and the deflecting sheave;
The hitch portion is provided on the back side of the left or right side wall of the car,
The second hitch portion is provided on the entrance / exit side of the left or right side wall of the car,
The hitch portion and the second hitch portion are arranged so as to be substantially symmetric when viewed from the center of gravity of the car.
Thereby, simplification and weight reduction of a guide rail, a guide apparatus, a car frame, etc. can be achieved, and the running characteristics of a car are also improved.
[0014]
The invention corresponding to claim 6 is the elevator according to claim 2, wherein the traction sheave and the second traction sheave are respectively attached to both ends of the output shaft of the drive device.
Thereby, a drive motor can be comprised in a small diameter long shaft, and while providing high output, the elevator excellent in space efficiency can be provided.
[0015]
According to a seventh aspect of the present invention, in the elevator according to the sixth aspect of the present invention, the drive device is disposed around the output shaft and connected to the output shaft, and the reduction device has a hollow structure. And a hollow drive motor disposed around the output shaft in order to give a driving force.
Thereby, although it is the structure which used the reduction gear for the drive device, size and weight reduction can be achieved.
[0016]
According to an eighth aspect of the present invention, in the elevator according to the first aspect of the present invention, when the support leg of the drive device is viewed from the left-right direction, the rider is more than the plane connecting the vertical center line of the traction sheave. It is characterized by being offset in a direction away from the back side of the car.
As a result, the space efficiency of the drive device can be improved, and the range of the highest rising point of the car can be expanded.
[0017]
The invention corresponding to claim 9 is the elevator according to claim 6 , wherein the output shaft of the drive device has at least one joint and a joint shaft.
As a result, the drive device can easily cope with the dimensions of the hoistway and the car, and the assembly and attachment work can be facilitated.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
First embodiment (corresponding to claims 1, 2 and 4 )
First, the outline | summary of the elevator which is the 1st Embodiment of this invention is shown in FIG.
The elevator according to the present embodiment includes a pair of car guide rails 4 and a pair of counterbalances for guiding the elevator 1 and the counterweight 2 to move up and down the hoistway 3 for the elevator car 1 and the counterweight 2 to move up and down. A weight guide rail 5 is installed.
[0020]
The car 1 is composed of a car room 1a on which a passenger rides and a car frame 1b that supports the car room 1a, and includes an entrance / exit 1c. A pair of connecting beams 6 provided across the guide rails are provided at the tops of the car guide rail 4 and the counterweight guide rail 5. A support beam 8 for mounting the driving device 7 is attached across the connecting beams 6.
[0021]
As shown in FIG. 4, the drive device 7 placed on the support beam 8 is a hoisting machine 16 (winding motor), a brake device 18, a frame 19 that supports them, and a support beam 8. This is a gearless drive device that does not use a reduction gear constituted by the support legs 20, and a drive traction sheave 10 is provided on the output shaft 25 at both ends of the hoisting machine. The traction sheave 10 may be attached to only one end of the driving device 7.
[0022]
A suspension rope 11 is wound around each of these traction sheaves 10, one end of the suspension rope 11 is connected to the rope hitch portion 12 at the upper part of the counterweight 2, and the other end is a car frame 1 b at the lower part of the car 1. Is attached to the hitch portion 13 provided through the shackle rod 11a. The hitch portion 13 is provided at a total of two locations at the rear side (the counterweight 2 side) as viewed from the entrance / exit portion 1c of the car 1, and at substantially symmetrical positions. When the traction sheave 10 is attached to only one end of the driving device 7, only one hitch portion is required.
[0023]
The counterweight 2 is disposed on the back as viewed from the entrance / exit portion 1c of the car 1, and the drive device 7 is located at the top of the hoistway 3 on the extension of the counterweight 2 in the up-and-down direction.
[0024]
FIG. 3 is a horizontal sectional view of the elevator according to the first embodiment. As shown in FIG. 3, the drive device 7 has a structure that is long in the width direction when viewed from the entrance, and the traction sheaves 10 provided at both ends of the hoisting machine of the drive device 7 are balanced with the hoistway 3. The weight 2 is provided close to the opposing wall surface 3a and the adjacent wall surface 3b adjacent to each other, and the side surfaces 14a and 14b of the car 1 (the surface on the side adjacent to the surface facing the counterweight 2) and the hoistway 3 In the space between the adjacent wall surfaces 3b, they are respectively arranged outside the horizontal projection section of the car. As shown in FIG. 2, the outer diameter B of the frame 19 of the driving device 7 (the outer diameter of the winding motor) is smaller than the diameter A of the traction sheave 10.
[0025]
Next, operation | movement of the elevator of 1st Embodiment comprised in this way is demonstrated. First, when the hoisting machine of the driving device 7 is driven, the traction sheave 10 directly connected to both ends rotates, and the suspension rope 11 is caused by the static frictional force (traction) between the traction sheave 10 and the suspension rope 11. Driven. Thus, the car 1 and the counterweight 2 connected to the suspension rope 11 are driven up and down along the guide rails 4 and 5.
[0026]
As mentioned above, according to the elevator of 1st Embodiment, the traction sheave 10 provided in the both ends of the hoisting machine of the drive device 7 is brought near the adjacent wall surface 3b, and the side surfaces 14a and 14b of the passenger car 1 and the hoistway wall In the meantime, since they are arranged outside the horizontal projection section of the car, even when the car 1 rises to the vicinity of the top of the hoistway, it does not interfere with the car 1, and the hoistway of the driving device 7 correspondingly. The top dimension can be kept low, and the horizontal cross-sectional dimension of the hoistway can be kept small.
[0027]
In addition, since the counterweight 2 is installed on the back side of the entrance / exit of the car 1, the elevator can be installed without increasing the size of the hoistway even in the case of a hoistway in which the size in the entrance / exit width direction cannot be increased. .
[0028]
In addition, since the traction sheave 10 is provided at both ends of the hoisting machine of the driving device 7, the degree of freedom of the position where the car 1 is suspended is increased, and the car 1 can be moved up and down stably.
[0029]
Furthermore, since the hoisting motor having a smaller diameter than the diameter of the traction sheave 10 is used, the dimension of the top of the hoistway of the driving device 7 can be kept low. Moreover, since the drive device 7 does not use a speed reducer, it can obtain quiet and good running characteristics.
[0030]
Further, since the hitch portion 13 of the car frame 1b is provided at the lower part of the car 1, the size in the direction of the top of the hoistway can be kept low, and the structure of the car frame 1b is simplified and reduced in weight. be able to.
[0031]
Further, since the hitch portion 13 is provided at a position that is substantially symmetrical with respect to the entrance / exit portion 1c of the car 1, the balance is good and good running characteristics can be obtained.
[0032]
Second embodiment (corresponding to claims 7 and 8 )
FIG. 5 shows the configuration of an elevator drive apparatus according to the second embodiment of the present invention, and the configuration other than the drive apparatus is the same as that of the first embodiment.
[0033]
In the elevator drive device 15 of the second embodiment, the hollow output shaft 27 of the drive motor 26 has a structure extending to the left and right sides and is supported by a bearing 29. A reduction gear 17 having a hollow structure and a brake 18 for braking the rotation of the drive motor 26 are mounted coaxially with the hollow output shaft 27 of the drive motor 26. An output shaft 25 is attached to the output side of the hollow speed reducer 17 via a bearing 28, and the traction sheave 10 is attached to both ends of the output shaft 25. A suspension rope 11 that suspends a car 1 and a counterweight 2 (not shown) is wound around the traction sheave 10.
[0034]
Next, the operation of the second embodiment will be described. The drive motor 26 rotates and power is input to the hollow structure speed reducer 17 directly connected to the hollow output shaft 27, so that the output side of the hollow structure speed reducer 17 is output. The rotational speed and driving force necessary for raising and lowering the car 1 are transmitted to the output shaft 25 attached to the car. The car 6 moves up and down through the traction sheave 10 and the suspension rope 11 attached to the output shaft 25.
[0035]
According to the second embodiment, in addition to the effects of the first embodiment, the hollow drive motor 26, the speed reducer 17, and the brake 18 can be used so that they can be arranged coaxially with the output shaft 25. In addition to realizing a small and lightweight drive device 15 and driving the output shaft 25 via the speed reducer 17, the reduction ratio of the speed reducer 17 and the drive motor 26 for various capacities and speeds required for the elevator. It is possible to cope with a simple change such as changing the capacity of.
[0036]
Further, as shown in FIG. 6, the support leg 20 is offset from the surface Z connecting the vertical center line of the traction sheave 10 to the opposite wall surface 3 a side, that is, in a direction away from the car 1. The width of the lifting / lowering stroke of the car 1 can be increased without changing the size. It should be noted that the same effect can be obtained even if this support leg 20 is applied to the drive device 7 of the first embodiment.
[0037]
First Reference Example Next, a first reference example, which is a modification of the driving device 15 of the second embodiment, will be described with reference to FIG.
The output shaft 30 a of the drive motor 30 is directly connected to the input shaft 31 a of the planetary gear speed reducer 31, and the output shaft 31 b of the planetary gear speed reducer 31 is connected to the small gear 32. The traction sheave 10 is directly connected to the output shaft 25, and a gear 33 that meshes with the small gear 32 is provided on the output shaft 25. Further, one end of the output shaft 25 is supported by a mounting leg 35a having a drive unit 36 constituted by a drive motor 30, a planetary gear speed reducer 31 and the like via a support bearing 34a, and the other end is similarly supported by a support bearing 34b. Are supported by the mounting legs 35b.
[0038]
Next, the operation of the first reference example will be described. The rotation of the drive motor 30 is transmitted to the planetary gear speed reducer 31, and the amplified torque is transmitted from the output shaft 31b of the planetary gear speed reducer 31 to the small gear 32. . The power transmitted to the small gear 32 is further decelerated through the large gear 33 to rotate the output shaft 25. The large gear 33 and the traction sheave 10 are fixed to the same output shaft 25, and the torque transmitted to the large gear 33 directly becomes the driving force of the traction sheave 10.
[0039]
According to the first reference example, in addition to the effects of the first embodiment, the reduction mechanism using a gear is adopted. Therefore, a wide reduction ratio can be set by combining the gear number ratio and the reduction gear number. it can. Accordingly, it is possible to cope with various elevator traveling speeds and driving forces. Further, when there is sufficient space in the hoistway, it is not necessary to provide a machine room for installing the elevator drive device, and it is possible to fit in the space between the car 1, the hoistway wall 3a and the ceiling. Even when there is no space in the hoistway, the machine room can be made smaller by downsizing the driving device.
[0040]
Second Reference Example Next, a second reference example, which is a modification of the driving device 15 of the second embodiment, will be described with reference to FIGS.
8, output shafts 38a are provided at both ends of a drive motor 38 having a brake (not shown), and reduction gears 41a, 40a, 40b having mounting legs 40a, 40b on the outer periphery via transmission means 39a, 39b such as gears and joints. 41b. The traction sheave 10 is fixed to the output side of the speed reducers 41a and 41b. On the other hand, in FIG. 9, the output shafts 38a at both ends of the drive motor 38 directly become the input shafts of the speed reducers 41a and 41b, and the frame 38b of the drive motor 38 is coupled to the fixed portions of the speed reducers 41a and 41b.
[0041]
Next, the operation of the second reference example will be described. When the drive motor 38 is rotated, the speed reducers 41a and 41b are driven directly through the transmission means 39a and 39b or without them, and the speed reducers 41a and 41b The number of rotations and driving force necessary for raising and lowering the car 1 are transmitted to the traction sheave 10 attached to the output side.
[0042]
According to the second reference example, in addition to the effect of the previous driving device, a long transmission path straddling the car 1 in the width direction can be used for high-speed and low-torque transmission, and the mechanism portion between the traction sheaves 10 In addition, there is an advantage that it is possible to easily cope with various dimensions of the car 1 and the hoistway 3 by changing the length of the transmission path.
[0043]
Third Reference Example Next, a third reference example, which is a modification of the driving device 15 of the second embodiment, will be described with reference to FIGS. In FIG. 10, a reduction gear 43 is connected to a drive motor 42 having a brake (not shown), and a traction sheave 10 is provided at both ends of the output shaft 44. One mounting leg 45a for supporting the output shaft 44 via a bearing (not shown) is provided on the outer periphery of the speed reducer 43, and the other mounting leg 45b is provided in the vicinity of the traction sheave on the opposite side. A joint 46 for transmitting torque to the output shaft 44 reaching the mounting leg 45b, or a joint shaft 47 having joints 46 at both ends as shown in FIG. In FIG. 12, a detachable fastening member 48 is provided between at least one traction sheave and the output shaft 44.
[0044]
According to the third reference example, not only can the assembly dimensions of the elevator drive device 15 be easily changed in accordance with the dimensions of the car 1 and the hoistway 3, but also the advantage that it is easy to carry in and adjust during installation. There is. In particular, in the example of FIG. 12, only the traction sheave 10 can be replaced and attached, and the working efficiency is improved.
[0045]
Third embodiment (corresponding to claim 3 )
FIG. 13 shows the configuration of the hitch portion 21 of the elevator rope according to the third embodiment of the present invention, and the configuration other than the hitch portion 21 is the same as that of the first embodiment.
[0046]
The hitch portion 21 of the elevator hanging rope of the third embodiment is provided on the car frame 1 b at a position slightly lower than the ceiling surface of the car 1. In this way, the hitch portion 21 of the suspension rope 11 is provided at a sufficiently low position where the shackle rod 11a provided at the end of the rope does not interfere with the driving device 7, so that the car 1 reaches the vicinity of the top of the hoistway. Even if it rises, it does not interfere with the drive device 7, the dimension in the direction of the top of the hoistway can be kept low, and the structure of the car frame 1b can be simplified and reduced in weight.
[0047]
Fourth Reference Example FIG. 14 shows the configuration of an elevator according to a fourth reference example of the present invention.
The elevator of the fourth reference example has the same configuration as that of the first embodiment except that the arrangement of the driving device 7 is changed. The elevator drive device 7 of the fourth reference example is located at the top of the hoistway 3 on the extension of the counterweight 2 in the up-and-down direction, and is disposed outside the horizontal projection section of the car 1. Further, the traction sheave 10 is disposed outside the horizontal projection section of the car 1 between the side surfaces 14a and 14b of the car 1 and the hoistway wall.
[0048]
Thus, in the elevator of the fourth reference example, the driving device 7 is disposed on the back side of the car 1, and the traction sheave 10 is provided on the side surfaces 14a and 14b of the car 1, that is, on the adjacent wall surface 3b side of the hoistway 3. Are arranged outside the horizontal projection section of the car 1, so that the car 1 may interfere with the driving device 7 even if it rises to the vicinity of the driving device 7 or beyond the driving device 7. Further, the dimension in the direction of the top of the hoistway can be kept low, and the plane dimension of the hoistway can be kept small.
[0049]
Fourth embodiment (corresponding to claim 5 )
FIG. 15 shows the configuration of the elevator according to the fourth embodiment of the present invention.
[0050]
The elevator of the fourth embodiment is the same as the configuration of the first embodiment except that the position of the hitch portion of the elevator of the first embodiment is changed and a deflecting sheave for moving the rope suspension position is provided. is there.
[0051]
The elevator of the fourth embodiment is provided with the hitch portion 22 of one of the two suspension ropes 11 on the rear side (the counterweight 2 side) when viewed from the entrance / exit portion 1c of the car 1, and the other suspension rope 11 11 hitch portions 23 are provided in the vicinity of the entrance / exit of the car 1 at positions symmetrical to the hitch portion 22 with respect to the center of gravity G. The suspension position of the suspension rope 11 fixed to the hitch portion 23 is moved by a deflecting sheave 24 fixed to the car guide rail 4 above the car 1.
[0052]
In this way, by setting the hitch portions 22 and 23 of the suspension rope 11 of the car 1 symmetrically with the center of gravity G, it is difficult to apply an unbalanced load to the guide rail and the guide device (guide roller) for guiding the car 1. Thus, simplification and weight reduction of the guide rail, the guide device, the car frame, etc. can be achieved, and the running characteristics of the car 1 are also improved.
[0053]
【The invention's effect】
As described above, according to the first aspect of the present invention, even when the car rises to the vicinity of the top of the hoistway, the car does not interfere with the traction sheave, and accordingly, the size of the hoistway top of the driving device is kept low. And the plane dimension of the hoistway can be kept small.
Moreover, even in the case of a hoistway where the dimension in the entrance / exit width direction cannot be increased, the elevator can be installed without increasing the hoistway dimensions.
[0054]
According to invention of Claim 2, a passenger car can be raised / lowered stably.
[0055]
According to the inventions of claims 3 and 4 , the dimension in the direction of the top of the hoistway can be kept low, and the structure of the car frame can be simplified and reduced in weight.
[0056]
According to the invention of claim 5 , the guide rail, the guide device, the car frame and the like can be simplified and reduced in weight, and the running characteristics of the car can be improved.
[0057]
According to the sixth aspect of the present invention, since the traction sheave is provided at both ends of the drive device, the drive motor can be configured with a small-diameter long shaft, high output can be obtained, and an elevator excellent in space efficiency can be provided. .
[0058]
According to the seventh aspect of the present invention, it is possible to achieve a reduction in size and weight while having a configuration using a speed reducer in the drive device.
[0059]
According to invention of Claim 8 , the space efficiency of a drive device improves and the range of the highest point of a raise of a car can be expanded.
[0060]
According to the ninth aspect of the present invention, the drive device can easily cope with the dimensions of the hoistway and the car, and the assembling and mounting operations are facilitated.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an elevator according to a first embodiment of the present invention.
FIG. 2 is a plan view of the elevator according to the first embodiment of the present invention.
FIG. 3 is a horizontal sectional view of the elevator according to the first embodiment of the present invention.
FIG. 4 is a plan view showing the configuration of the elevator drive apparatus according to the first embodiment of the present invention.
FIG. 5 is a plan view showing the configuration of an elevator drive apparatus according to a second embodiment of the present invention.
FIG. 6 is a side view showing a configuration of an elevator driving apparatus according to a second embodiment of the present invention.
FIG. 7 is a front view showing an elevator driving apparatus according to a first reference example of the present invention.
FIG. 8 is a front view showing an elevator driving apparatus according to a second reference example of the present invention.
FIG. 9 is a front view showing an elevator driving apparatus according to a second reference example of the present invention.
FIG. 10 is a front view showing an elevator drive apparatus according to a third reference example of the present invention.
FIG. 11 is a front view showing an elevator drive apparatus according to a third reference example of the present invention.
FIG. 12 is a front view showing an elevator drive apparatus according to a third reference example of the present invention.
FIG. 13 is an overall configuration diagram of an elevator according to a third reference example of the present invention.
FIG. 14 is an overall configuration diagram of an elevator according to a fourth reference example of the present invention.
FIG. 15 is an overall configuration diagram of an elevator according to a fourth embodiment of the present invention.
FIG. 16 is a view showing an outline of a conventional slidable linear motor elevator.
FIG. 17 is a diagram showing an outline of a conventional machine room-less elevator.
FIG. 18 is a diagram showing an outline of a conventional machine room-less elevator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Riding car 2 Counterweight 3 Hoistway 4 Car guide rail 5 Counterweight guide rail 7 Driving device 10 Traction sheave 11 Hanging rope 13 Hitch part 17 Reduction gear 18 Brake device 19 Frame 20 Support leg 24 Bending sheave 25 Output shaft 46 Joint 47 Joint shaft 48 Fastening member

Claims (9)

A car that is guided by a pair of left and right car guide rails and goes up and down in the hoistway,
A counterweight which is guided by a pair of right and left counterweight guide rails and moves up and down the back side of the car;
A traction sheave rotating around an axis that is disposed at the top of the hoistway and extends horizontally in the left-right direction;
A drive device that is arranged coaxially with the traction sheave and that rotationally drives the traction sheave;
A suspension rope that is wound around the traction sheave and suspends the car and the counterweight in a fishing bottle shape,
It said drive device, when viewed from the upper side in the vertical direction, a part is disposed above the counterweight to overlap with the car Rutotomoni, than the frame outer diameter the diameter of the traction sheave small,
When the traction sheave is viewed from above in the vertical direction, a part of the sheave is located in a space between the inner wall surface of either the left or right side of the hoistway and the left or right side wall of the car, In addition, the remaining portion is arranged in a space between the inner wall surface on either the left or right side of the hoistway and the side wall facing the inner wall surface on the left or right side of the hoistway of the counterweight. Established,
An elevator, wherein one end of the suspension rope is connected to a hitch portion provided to face either the left or right side wall of the car. A second traction sheave disposed coaxially with the traction sheave and driven to rotate integrally by the drive device;
A second suspension rope wound around the second traction sheave and suspending the car and the counterweight in the shape of a fishing bottle;
When the second traction sheave is viewed from above in the vertical direction, a part of the second traction sheave is in a space between the left and right inner wall surfaces of the hoistway and the left and right side walls of the car. And the remaining portion is located in a space between the left and right inner wall surface of the hoistway and the side wall of the counterweight facing the left and right inner wall surface of the hoistway. Arranged so that
2. The second hanging rope according to claim 1, wherein one end of the second hanging rope is connected to a second hitch portion provided on either the left or right side wall of the car. elevator.   The elevator according to claim 1 or 2, wherein the hitch portion is provided below a ceiling surface of the car. The elevator according to claim 3 , wherein the hitch portion is provided at a lower portion of the car. Further comprising a deflecting sheave supported on either the left or right of the pair of left and right car guide rails,
The second suspension rope is wound around the traction sheave and the deflecting sheave;
The hitch portion is provided on the back side of the left or right side wall of the car,
The second hitch portion is provided on the entrance / exit side of the left or right side wall of the car,
3. The elevator according to claim 2, wherein the hitch portion and the second hitch portion are arranged so as to be substantially symmetric when viewed from the center of gravity of the car.   The elevator according to claim 2, wherein the traction sheave and the second traction sheave are respectively attached to both ends of an output shaft of the driving device. The drive device includes a hollow structure reduction gear disposed around the output shaft and connected to the output shaft, and a hollow gear disposed around the output shaft to apply a driving force to the reduction gear. The elevator according to claim 6 , further comprising: a drive motor.   The support legs of the drive device are offset in a direction away from the rear side of the car, rather than a plane connecting the vertical center line of the traction sheave when viewed from the left-right direction. The elevator according to claim 1.   8. The elevator according to claim 7, wherein the output shaft of the drive device has at least one joint and a joint shaft.

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