CN1926048A - Elevator device - Google Patents

Abstract

The invention provides an elevator device. A lifting body capable of lifting is arranged in the shaft. The lifting body is lifted and lowered in the hoistway by a lifting mechanism disposed in the hoistway. The lifting mechanism comprises: a drive device having a drive sheave; a main rope wound around the drive sheave and suspending the elevating body in the hoistway; and a tension pulley that is wound with the main rope and applies tension to the main rope. The lifting body is provided with a protruding part protruding from a side surface part of the lifting body. One end and the other end of the main rope are connected to the protruding portions, respectively.

Description

Elevator device

technical field

The invention relates to a traction type elevator device which suspends a lifting body through a main rope.

Background technique

Conventionally, in order to reduce the horizontal cross-sectional area of the hoistway, there has been proposed a non-counterweight elevator apparatus in which no counterweight is provided. In the existing elevator device without counterweight, one end of the driving rope for suspending the car is fixed to the upper part of the car, and the other end of the driving rope is fixed to the lower part of the car. There are three driven sheaves and one driving sheave in the hoistway. A driving rope is wound around three driven sheaves and a driving sheave from one end to the other (see Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 2004-67365

However, in such a conventional elevator apparatus, it is necessary to provide rope fixing devices for fixing the ends of the driving ropes to the car at the upper and lower parts of the car. As a result, the actual height dimension of the car is increased by a portion corresponding to the height dimension of the rope fixing device, resulting in an increase in the dimension of the hoistway in the height direction.

Contents of the invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an elevator apparatus capable of reducing the size of the hoistway in the height direction.

The elevator device of the present invention includes: a lifting body that can be lifted and lowered in the hoistway; and a lifting mechanism, which includes: a driving device with a driving sheave; a main rope that is wound on the driving sheave and suspends the hoisting body in the hoistway ; and the tension pulley that is wound with the main rope and applies tension to the main rope. The above-mentioned lifting mechanism lifts the lifting body by the driving force of the driving device, and the lifting body is provided with a protrusion protruding from the side of the lifting body. , one end and the other end of the main rope are respectively connected to the protrusions.

Description of drawings

Fig. 1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention.

Fig. 2 is a side view showing the elevator apparatus in Fig. 1 .

Fig. 3 is a front view showing an elevator apparatus according to Embodiment 2 of the present invention.

Fig. 4 is a side view showing the elevator apparatus in Fig. 3 .

Fig. 5 is a side view showing an elevator apparatus according to Embodiment 3 of the present invention.

Fig. 6 is a side view showing an elevator apparatus according to Embodiment 4 of the present invention.

Fig. 7 is a side view showing an elevator apparatus according to Embodiment 5 of the present invention.

Fig. 8 is a front view showing an elevator apparatus according to Embodiment 6 of the present invention.

Fig. 9 is a side view showing the elevator apparatus in Fig. 8 .

Detailed ways

Preferred embodiments of the present invention will be described below with reference to the drawings.

Implementation Mode 1

Fig. 1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention. In addition, Fig. 2 is a side view showing the elevator apparatus in Fig. 1 . In the drawing, a car 2 serving as a lift body is disposed in a hoistway 1 so as to be able to move up and down. In addition, a pair of car guide rails (not shown) for guiding the car 2 are provided in the hoistway 1 . The car 2 is guided up and down in the hoistway 1 by the car guide rails.

The car 2 includes: a floor portion 2a; a ceiling portion 2b disposed above the floor portion 2a; a front portion 2c provided with a car entrance 3; a back portion 2d opposite to the front portion 2c; A pair of side surface parts 2e opposed to each other in the width direction. In addition, the car 2 is arranged in the hoistway 1 such that the width direction of the car doorway 3 is parallel to the width direction of the hoistway 1 . Moreover, each side part 2e is arrange|positioned between each car guide rail. In addition, when the hoistway 1 is vertically projected, the straight line connecting the car guide rails is parallel to the width direction of the hoistway 1 .

A protruding portion 4 protruding outward from the car 2 is provided at the middle portion of the one side portion 2e, and the protruding portion 4 extends from the car 2 in the horizontal direction. The protruding portion 4 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 .

A driving device (tractor) 5 that generates a driving force for raising and lowering the car 2 is provided at an upper portion in the hoistway 1 . The driving device 5 includes a driving device main body 6 having a motor, and a driving sheave 7 rotated by the driving device main body 6 . The driving device 5 is a thin traction machine whose axial dimension is smaller than the radial dimension of the driving device main body 6 or the driving sheave 7 . In addition, the driving device 5 is arranged such that its axial direction is the width direction of the hoistway 1 .

A plurality of main ropes 8 are wound around the driving sheave 7 . The car 2 is suspended in the hoistway 1 by each main rope 8 . The outer peripheral portion of each main rope 8 is covered with a high friction material. Thereby, the friction force between the drive sheave 7 and each main rope 8 can be ensured.

In the lower part of the hoistway 1, a tension pulley 9 around which each main rope 8 is wound is provided. The tensioning pulley 9 is displaceable relative to the car guide rail. In this example, the tension pulley 9 is attached to a rotating member capable of rotating in the vertical direction with respect to the car guide rail. And, the tension pulley 9 is suspended by each main rope 8 . Thus, the tension pulley 9 applies tension to each main rope 8 . Moreover, the tension pulley 9 is provided with the weight (not shown) for ensuring the tension|tensile_strength applied to each main rope 8 to a predetermined magnitude|size.

The protruding part 4 is provided with: an upper rope fixing part 10 for connecting each main rope 8 to the protruding part 4 above the protruding part 4, and an upper side rope fixing part 10 for connecting each main rope 8 to the protruding part 4 below the protruding part 4. The lower rope fixing part 11 of the protruding part 4 . Each main rope 8 includes a first connecting portion (one end) 8 a connected to the upper rope fixing portion 10 and a second connecting portion (the other end) 8 b connected to the lower rope fixing portion 11 . Each main rope 8 is wound around the drive sheave 7 and the tension pulley 9 sequentially from the first connecting portion 8a to the second connecting portion 8b. That is, the elevator apparatus of Embodiment 1 is a non-counterweight elevator apparatus which does not install a counterweight.

The driving device 5 and the tension pulley 9 are arranged outside the area of the car 2 in the vertical projection plane of the hoistway 1 . The car 2 can be raised and lowered between an upper limit position where the ceiling portion 2b is higher than the drive unit 5, and a lower limit position where the floor portion 2a is lower than the tension pulley 9. The location of the location.

In addition, the lifting mechanism 12 used to suspend the car 2 and make it lift up and down in the hoistway 1 includes: a driving device 5 , a main rope 8 and a tension pulley 9 . The lift mechanism 12 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 .

The operation will be described below. When the drive device 5 is driven, the drive sheave 7 rotates. Thereby, each main rope 8 circulates, and the car 2 moves up and down in the hoistway 1 . At this time, the car 2 is stably guided by the car guide rails.

In this elevator apparatus, since the car 2 is provided with the protruding part 4 protruding from the side part 2e of the car 2, and the first connecting part 8a and the second connecting part 8b of each main rope 8 are connected to the protruding part 4 Therefore, the positions of the upper side rope fixing part 10 and the lower side rope fixing part 11 for connecting each main rope 8 to the car 2 can be restricted within the height dimension range of the car 2 . Therefore, the space above and below the car 2 can be reduced by a portion corresponding to the height dimension of the rope fixing parts 10 and 11, and the dimension of the hoistway 1 in the height direction can be reduced.

In addition, since the lifting mechanism 12 is arranged outside the area of the car 2 in the vertical projection plane of the hoistway 1, when the car 2 ascends and descends in the hoistway 1, even if a part of the car 2 reaches the area where the drive device 5 and When the height of any one of the tension pulleys 9 is high, the driving device 5 and the tension pulley 9 will not interfere with the car 2 either. Therefore, within the hoistway 1, the liftable range of the car 2 can be enlarged, and the size of the hoistway 1 in the height direction can be further reduced.

In addition, since the tension pulley 9 is suspended from each main rope 8 to apply tension to each main rope 8 , tension can be applied to each main rope 8 with a simple structure, and cost can be reduced.

And, on the outer peripheral portion of each main rope 8, be provided with high friction material, therefore can ensure the frictional force between each main rope 8 and driving sheave 7, thereby can prevent the friction between each main rope 8 and driving sheave 7. skidding.

Implementation mode two

Fig. 3 is a front view showing an elevator apparatus according to Embodiment 2 of the present invention. In addition, Fig. 4 is a side view showing the elevator apparatus in Fig. 3 . In the figure, the driving device 5 and the tension pulley 9 are arranged in the lower part of the hoistway 1 . The driving device 5 is fixed to the car rail (not shown). The tension pulley 9 is displaceable in the vertical direction relative to the car guide rail. In addition, tension pulleys 9 are suspended by respective main ropes 8 .

Above the driving device 5 and the tension pulley 9, a first return pulley 21 around which each main rope 8 is wound is provided. Moreover, in the upper part in the hoistway 1, the 2nd return sheave 22 around which each main rope 8 is wound is provided. The first return sheave 21 and the second return sheave 22 are rotatable around a horizontal axis fixed to the car guide rail. In addition, the driving device 5 , the tension pulley 9 , the first reversing sheave 21 and the second reversing sheave 22 are respectively arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 .

A part of each main rope 8 between the drive sheave 7 and the tension sheave 9 is wound around the first anti-sheave 21 . On the other hand, the part of each main rope 8 between the driving sheave 7 and the first connection part 8a is wound around the second reverse sheave 22 . That is, each main rope 8 is wound around the second return sheave 22 , the drive sheave 7 , the first return sheave 21 , and the tension sheave 9 sequentially from the first connection portion 8 a to the second connection portion 8 b. By guiding each main rope 8 from the driving sheave 7 to the first return sheave 21 and the second return sheave 22, the wrap angle of each main rope 8 with respect to the driving sheave 7 can be ensured to be a predetermined size.

In addition, the lifting mechanism 23 for suspending the car 2 and making it lift in the hoistway 1 includes: a driving device 5 , a main rope 8 , a tension pulley 9 , a first anti-rope pulley 21 and a second anti-rope pulley 22 . The lift mechanism 23 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 . Other structures are the same as those in the first embodiment.

In this elevator device, since each main rope 8 is wound on the first reverse sheave 21 between the driving sheave 7 and the tensioning sheave 9, it is possible to make each main rope 8 relative to the driving sheave 7. The wrapping angle is guaranteed to be a predetermined size, thereby preventing each main rope 8 from slipping relative to the driving sheave 7.

In addition, since the driving device 5 is disposed at the lower portion in the hoistway 1, maintenance and inspection work of the driving device 5 can be facilitated. In addition, it is possible to arrange the equipment on the upper part of the hoistway 1 away from the car 2 easily.

Implementation Mode Three

Fig. 5 is a side view showing an elevator apparatus according to Embodiment 3 of the present invention. In the drawing, a deflection sheave 31 arranged at a distance from the drive sheave 7 is provided in the hoistway 1 . The diverting sheave 31 is arranged above the driving sheave 7 . Furthermore, the diverting sheave 31 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 . In addition, the diverting sheave 31 is rotatable around a horizontal axis fixed to the car guide rail.

Each main rope 8 is wound on the second anti-sheave 22, the driving sheave 7, the steering sheave 31, the driving sheave 7, the first anti-sheave 21 and Tensioner 9. That is, each main rope 8 protruding from the second anti-sheave 22, after being wound on the driving sheave 7, is wound on the steering sheave 31, then wound on the driving sheave 7 again, and is then Guide the first anti-sheave 21.

In addition, the hoisting mechanism 32 for suspending the car 2 and making it lift in the hoistway 1 includes: a driving device 5, a main rope 8, a tension pulley 9, a first anti-rope pulley 21, a second anti-rope pulley 22 and Turn to sheave 31. The lift mechanism 32 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 . Other structures are the same as those in Embodiment 2.

In such an elevator apparatus, each main rope 8 is wound on the driving sheave 7 after being wound on the diverting sheave 31, and then wound on the driving sheave 7 again, so that the length of each main rope can be further increased. 8 relative to the wrapping angle of the driving sheave 7, so as to further prevent each main rope 8 from slipping relative to the driving sheave 7. In addition, since the traction capacity for raising and lowering the car 2 is increased, the mass of the tension pulley 9 and the weight can be reduced, and the hoistway 1 can be further downsized.

Implementation Mode Four

Fig. 6 is a side view showing an elevator apparatus according to Embodiment 4 of the present invention. In the drawing, a driving device 5 and a deflection sheave 31 are provided at the upper part in the hoistway 1 . The diverting sheave 31 is arranged below the driving sheave 7 . Furthermore, the diverting sheave 31 is arranged outside the area of the car 2 in the vertical projection plane in the hoistway 1 .

Each main rope 8 is wound around the drive sheave 7, the deflection sheave 31, the drive sheave 7, and the tension sheave 9 sequentially from the first connection portion 8a to the second connection portion 8b. That is, each main rope 8 from the first connecting portion 8a, after being wound on the driving sheave 7, is wound on the diverting sheave 31, then wound on the driving sheave 7 again, and is then guided to the tensioner. tight wheel 9.

In addition, the lifting mechanism 41 for suspending the car 2 and making it lift in the hoistway 1 includes: a driving device 5 , a main rope 8 , a tension pulley 9 and a steering sheave 31 . The lift mechanism 41 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 . Other structures are the same as those in the first embodiment.

In this elevator device, since each main rope 8 is wound on the driving sheave 7 after being wound on the diverting sheave 31, and then wound on the driving sheave 7 again, it is also possible to further increase the length of each rope. The wrapping angle of the main ropes 8 relative to the driving sheave 7 can further prevent each main rope 8 from slipping relative to the driving sheave 7 . In addition, since the traction capacity for raising and lowering the car 2 is improved, the mass of the tensioner 9 and the weight can be reduced, and the hoistway 1 can be downsized.

Implementation Mode Five

Fig. 7 is a side view showing an elevator apparatus according to Embodiment 5 of the present invention. In the drawing, a reverse sheave 51 is provided at the upper part in the hoistway 1 . The return sheave 51 is rotatable around a horizontal axis fixed to the car guide rail.

The lower part in the hoistway 1 is provided with a driving device 5 and a tension pulley 9 . The tension pulley 9 is arranged at a distance from the drive sheave 7 . Furthermore, the tension pulley 9 is disposed above the drive sheave 7 . The drive device 5 is fixed relative to the car guide rail. The tensioning pulley 9 is displaceable relative to the car guide rail.

Each main rope 8 is wound around the reverse sheave 51, the drive sheave 7, the tension sheave 9, and the drive sheave 7 in this order from the first connection portion 8a to the second connection portion 8b. That is, each main rope 8 is wound on the driving sheave 7 through the reverse sheave 51 from the first connecting portion 8a, then wound on the tension pulley 9, and then wound on the driving sheave 7 again. , until the second connecting portion 8b.

A urging device 52 for urging the tension pulley 9 in a direction in which tension is applied to each main rope 8 is provided in the hoistway 1 . In this example, the urging device 52 has an urging spring 53 as an elastic body that urges the tensioner 9 in a direction away from the drive sheave 7 .

In addition, the lifting mechanism 54 used to suspend the car 2 and make it move up and down in the hoistway 1 includes: a driving device 5 , a main rope 8 , a tensioning pulley 9 and a force applying device 52 . The lift mechanism 54 is arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 . Other structures are the same as those in the first embodiment.

In such an elevator apparatus, since the tensioning sheave 9 is biased in a direction in which tension is applied to each main rope 8 by the biasing device 52, the tensioning sheave 9 can be biased in any direction with a predetermined biasing force. Accordingly, it is possible to omit a reel pulley or the like for suspending the tension pulley 9 by each main rope 8 , and also to omit a weight for securing a predetermined tension on each main rope 8 . Therefore, the number of parts can be reduced, cost can be reduced, and space-saving of the hoistway 1 can be realized.

In addition, each main rope 8 is wound on the driving sheave 7 through the reverse sheave 51 from the first connecting portion 8a to the second connecting portion 8b, then wound on the tension pulley 9, and then wound on the driving pulley again. Therefore, each main rope can be installed in the hoistway 1 so that the bending direction of each main rope 8 always faces the same direction. That is, it is possible to prevent reverse bending of each main rope 8 . Accordingly, the life of each main rope 8 can be extended.

In addition, each main rope 8 is wound on the tension sheave 9 after being wound on the driving sheave 7, and then wound on the driving sheave 7 again, so that the tension of each main rope 8 relative to the driving sheave can be increased. 7 can prevent each main rope 8 from slipping relative to the driving sheave 7.

In addition, in the above-mentioned example, the driving device 5 and the tensioning pulley 9 are arranged at the bottom of the hoistway 1, and the anti-rope pulley 51 is arranged at the top of the hoistway 1, but the anti-rope pulley 51 can also be arranged at the bottom of the hoistway 1, The driving device 5 and the tension pulley 9 are arranged in the upper part of the hoistway 1 . At this time, the tension pulley 9 is disposed below the drive sheave 7 . In addition, the main rope 8 is installed in the hoistway 1 in such a manner that it is wound around the driving sheave 7, the tensioning sheave 9, the driving sheave 7 and the reverse sheave 51 sequentially from the first connecting portion 8a to the second connecting portion 8b. superior.

Embodiment six

Fig. 8 is a front view showing an elevator apparatus according to Embodiment 6 of the present invention. In addition, FIG. 9 is a side view showing the elevator apparatus in FIG. 8 . In the figure, the car 2 is provided with a plurality of (two in this example) protruding portions 61 and 62 protruding from the respective side portions 2e toward the outside of the car 2 . The protrusions 61, 62 extend horizontally from the car 2 in directions away from each other. In addition, the protruding portions 61 and 62 are arranged so as to be point-symmetrical with respect to the center of gravity of the car 2 in the vertical projection plane of the hoistway 1 .

On one and the other side inside the hoistway 1 are respectively provided: a plurality of (two in this example) lifting mechanisms 63 , 64 corresponding to the protrusions 61 , 62 , respectively. The structures of the elevating mechanisms 63 and 64 are the same as those of the elevating mechanism 41 in the fourth embodiment. The lift mechanisms 63 and 64 are arranged outside the area of the car 2 within the vertical projection plane of the hoistway 1 . In addition, the car 2 is arranged between the lift mechanisms 63 and 64 .

The protruding part 61 is provided with: an upper side rope fixing part 65 for connecting each main rope 8 to the protruding part 61 above the protruding part 61; The lower side rope fixing part 66 of the protruding part 61 . In addition, the protruding part 62 is provided with: an upper side rope fixing part 67 for connecting each main rope 8 to the protruding part 62 above the protruding part 62; The lower cord fixing portion 68 is connected to the protruding portion 62 .

In one lifting mechanism 63 , the first connecting portion 8 a of each main rope 8 is connected to the upper rope fixing portion 65 , and the second connecting portion 8 b is connected to the lower rope fixing portion 66 . Furthermore, in another elevating mechanism 64 , the first connecting portion 8 a of each main rope 8 is connected to the upper rope fixing portion 67 , and the second connecting portion 8 b is connected to the lower rope fixing portion 68 . The car 2 is suspended in the hoistway 1 by the main ropes 8 of the lifting mechanisms 63 and 64 .

The car 2 is raised and lowered by the driving force of the driving devices 5 of the lifting mechanisms 63 and 64 . The drive sheaves 7 rotate synchronously with each other. Other structures are the same as those in the first embodiment.

The operation will be described below. Driven by the driving devices 5 , the driving sheaves 7 rotate synchronously with each other. Accordingly, the respective main ropes 8 of the elevating mechanisms 63 and 64 circulate in synchronization with each other. Thus, the car 2 moves up and down in the hoistway 1 . At this time, since the respective main ropes 8 circulate synchronously with each other, the car 2 moves up and down smoothly.

In this elevator apparatus, the car 2 is provided with a plurality of protrusions 61, 62 protruding from the side surface 2e of the car 2, and the hoistway 1 is provided with a plurality of elevating mechanisms corresponding to the protrusions 61, 62, respectively. 63,64, the first connecting portion 8a and the second connecting portion 8b of each main rope 8 of the lifting mechanism 63 are connected with the protruding portion 61, the first connecting portion 8a and the second connecting portion 8b of each main rope 8 of the lifting mechanism 64 Since it is connected to the protruding portion 62, the car 2 can be suspended at a plurality of points, and the car 2 can be stably raised and lowered. In addition, since the common car 2 is raised and lowered by the driving force of the plurality of drive devices 5, each drive device 5 can be downsized. Thereby, the installation space of each drive device 5 can be reduced, and the whole elevator apparatus can be downsized.

In addition, in the above example, the structures of the lifting mechanisms 63 and 64 that suspend the car 2 and enable it to move up and down in the hoistway 1 are the same as the structure of the lifting mechanism 41 in Embodiment 4, but each lifting mechanism can also be made The structure adopts the structure of the lifting mechanism 12 of the first embodiment, the lifting mechanism 23 of the second embodiment, the lifting mechanism 32 of the third embodiment or the lifting mechanism 54 of the fifth embodiment. Also in this way, the car 2 can be stably raised and lowered, and the entire elevator apparatus can be downsized.

In addition, in each of the above-described embodiments, the high-friction material is provided on the outer peripheral portion of the main rope 8 , but a high-friction material may be provided on the outer peripheral portion of the drive sheave 7 . In addition, high-friction materials may be provided on the outer peripheral portions of the main rope 8 and the drive sheave, respectively. In this way, the frictional force between the main rope 8 and the driving sheave 7 can also be increased, thereby preventing the main rope from slipping relative to the driving sheave 7 . In addition, by increasing the frictional force between the main rope 8 and the driving sheave 7, the traction ability is also improved, thereby reducing the magnitude of the tension applied to the main rope 8, so that the tension pulley 9 and the force applying device can 52 miniaturization.

Claims (9)

1. An elevator installation comprising: Lifting bodies that can be raised and lowered in the shaft; and The lifting mechanism includes: a driving device with a driving sheave; a main rope that is wound around the driving sheave and suspends the lifting body in the hoistway; tension pulley for applying tension, the lifting mechanism lifts the lifting body by the driving force of the driving device, It is characterized in that, The lifting body is provided with a protrusion protruding from a side surface of the lifting body, One end and the other end of the main rope are respectively connected to the protrusions. 2. Elevator installation according to claim 1, characterized in that, The elevating mechanism is installed in the hoistway, and is arranged outside the area of the elevating body when the hoistway is vertically projected. 3. Elevator arrangement according to claim 1 or 2, characterized in that The tension pulley is suspended by the main rope to apply tension to the main rope. 4. Elevator installation according to claim 3, characterized in that The lifting mechanism further includes a reverse sheave on which a portion of the main rope between the driving sheave and the tension sheave is wound. 5. Elevator installation according to any one of claims 1 to 4, characterized in that The raising and lowering mechanism further includes a diverting sheave arranged at a distance from the driving sheave, The main rope is wound around the diverting sheave after being wound around the driving sheave, and then wound around the driving sheave again. 6. Elevator installation according to claim 1 or 2, characterized in that The lifting mechanism further includes a biasing device for biasing the tension pulley in a direction in which tension is applied to the main rope. 7. Elevator installation according to claim 6, characterized in that, The tension pulley is spaced apart from the drive sheave, The main rope is wound around the tension sheave after being wound around the driving sheave, and then wound around the driving sheave again. 8. Elevator installation according to any one of claims 1 to 7, characterized in that A high friction material interposed between the main rope and the driving sheave is provided on an outer peripheral portion of at least one of the main rope and the driving sheave. 9. Elevator installation according to any one of claims 1 to 8, characterized in that The above-mentioned lifting body is suspended in the above-mentioned hoistway in a liftable manner by a plurality of the above-mentioned lifting mechanisms, The elevating body is provided with a plurality of protrusions protruding from side surfaces of the elevating body corresponding to the elevating mechanisms, One end and the other end of each of the main ropes of the corresponding lifting mechanism are respectively connected to each of the protrusions.

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