HK1140465B - Machine mounting in a machine roomless elevator system - Google Patents

Description

Machine for installation in elevator system without machine room

Technical Field

The present invention relates to an elevator system, and more particularly, to a machine roomless elevator system.

Background

A conventional traction elevator system includes an elevator car and a counterweight, each suspended at opposite ends of a hoisting rope in an elevator hoistway. The hoisting ropes are driven by a drive pulley, which is rotated by a motor. In conventional elevator systems, the motor is disposed in the machine room. Typically, a machine room is built above the hoistway to accommodate the motor and provide sufficient space for elevator maintenance personnel to perform maintenance on the equipment disposed therein.

In buildings, each elevator has a machine room which creates an increasing problem in the industry. Firstly, for building owners, the cost is obviously increased for building machine rooms; second, the scarcity of real estate places constraints on space that are highly desirable for other uses. These factors and disadvantages become more apparent when the building includes multiple elevators, as each elevator requires a machine room, thereby increasing construction costs and occupying additional space in the building. Therefore, in the elevator industry, some machine room-less systems have been developed.

Existing machine roomless elevator systems include a motor disposed within a hoistway. Typically, the motor is supported directly on the interior wall of the hoistway. This requires that the wall of the building bear the weight of the motor and that the vibration and noise generated by the elevator are continuously transmitted to the wall of the building while the elevator is running. In the past, the structure of the building was greatly damaged.

WO2005/007552 discloses an elevator whose closed end is hooked to the floor of an elevator without machine room. In which the machine 24 is disposed adjacent to or beside the cantilevered car 22, which takes up additional space in the hoistway and presents difficulties in the placement of the various components of the elevator, as can be seen in the plan view of the installed elevator.

Disclosure of Invention

Exemplary embodiments of the invention include an elevator system including a car and a counterweight configured to travel along a guide rail unit, and further including a machine positioned above the car and configured to drive a tension member. Furthermore, the machine is mounted on a superstructure, which is supported only by the rail units. The installation arrangement avoids the contact between the top layer structure and the elevator shaft of the building, isolates the transmission of vibration and noise, and improves the bearing stress condition of the building wall.

In addition, in order to be able to match most of the elevator shaft structures on the market today, it is preferred in the elevator system according to the invention that the counterweight is arranged behind the car, i.e. opposite the door position of the car. Further, the machine is positioned above the car. Therefore, when the elevator system is applied, the transformation of the conventional elevator system can be realized without changing the well structure, and the project amount is greatly reduced. In other words, the cross-sectional area of the hoistway is not increased by the placement of components beside the car.

Drawings

Embodiments of the invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a schematic diagram of the traction principle of a typical elevator system;

fig. 2 is a perspective view of the overall structure of an elevator system according to a preferred embodiment of the present invention;

fig. 3 is a perspective view of the overhead structure of the elevator system shown in fig. 2;

FIG. 4 is a perspective view of a machine beam (bedplate) in the top level structure shown in FIG. 3;

fig. 5 is a perspective view of a rope end rest in the topping structure shown in fig. 3;

fig. 6 is a perspective view of a bracket connecting the machine beam or the fag end beam with the corresponding guide rail; and

fig. 7 is an exploded perspective view of the connection position between the bracket and the corresponding beam shown in fig. 6, viewed from another angle.

Detailed Description

Fig. 1 illustrates the traction principle of an elevator system 100. The elevator system 100 includes a car 2, a counterweight 4, and a machine 12. The counterweight 4 is located behind the car 2 and the machine 12 is positioned on the car 2. It should be understood that: the entire machine 12 or at least a portion of the machine 12 may be positioned on the car. The tension member 10 connecting the car to the counterweight 4 engages the traction sheave member 26 comprising two diverting pulleys, wherein the tension member 10 passes over one diverting pulley and under the other diverting pulley. This enables the machine 12 to run and the diverting pulley to drive the tension member 10 and thus the car 2 and counterweight 4 to move when it rotates. It will be appreciated that this configuration is for illustration purposes only and that for the selection of particular components, the machine 12 of the present invention may be a geared or gearless motor and the tension members 10 may be round cords or flat belts.

Fig. 2 shows a perspective view of the overall structure of an elevator system according to an exemplary embodiment of the present invention. As shown in fig. 2, the entire elevator system 100 is disposed in an elevator hoistway of a building, which includes a car 2, a counterweight 4, and a machine 12, as described above in connection with fig. 1. Further, the system 100 is provided with a pair of car guide rails 6 and a pair of counterweight guide rails 8 which are parallel to each other. The elevator car 2 and the counterweight 4 run along car guide rails 6 and counterweight guide rails 8, respectively. These guide rails are connected to the ground at their respective bottom ends and to the inner wall of the shaft at several connection points in their respective longitudinal directions for support. It will be appreciated by those skilled in the art that the number of guide rails may not be limited thereto, for example, only a single guide rail or more than two guide rails may also be used to guide the car and counterweight. Alternatively, the configuration of the guide rails may vary, for example, the pair of counterweight guide rails may be hollow, and two counterweight portions may be respectively disposed in the pair of hollow guide rails.

Fig. 3 shows the ceiling structure 20 of the elevator system 100. The machine 12 is mounted on this top structure. In particular, the top deck structure 20 comprises a first plate 22 for mounting the machine 12 and fixing one end of the several tensile elements 10 (not shown in fig. 3) and a second plate 23 for mounting the rope end beam 24 fixing the other end of the several tensile elements 10, and further comprises a counter-sheave element 26 connected between the machine beam and the rope end beam. Clips 32 are provided for gripping the ends of the tension member 10, and the pulley member 26 includes a frame 28 bridging between the first and second plates 22, 23. Two sets of pulleys 30 are housed in the frame 28. The tension member 10 passes over one set of pulleys and under the other set of pulleys.

Fig. 4 shows the first plate 22 in more detail. Referring to fig. 3 and 4, the first plate 22 is provided at a middle portion thereof with an extension portion 3 protruding toward the second plate; the machine 12 is fixedly placed on the extension 34. As can be seen in connection with fig. 2 and 4, the first plate 22 is connected at both ends to the top ends of the pair of counterweight guide rails 8 by brackets 40, respectively. It should be noted here that the first plate 22 is supported only by the pair of counterweight guide rails 8, and does not contact the elevator shaft of the building, isolating the transmission of vibrations and noise, improving the load bearing condition of the building wall.

Also, as can be seen in connection with fig. 2 and 5, the second plate 23 is connected at both ends to the top ends of the pair of car guide rails 6. The second plate is supported only by the pair of car guide rails 6 without contacting with the elevator shaft of the building, isolating the transmission of vibration and noise and improving the bearing stress condition of the building wall. It will be understood by those skilled in the art herein that the first plate 22 may also be connected to the car guide rails and the second plate 23 may also be connected to the counterweight guide rails.

As can be seen with combined reference to fig. 4 and 5, the first plate 22 and the second plate 23 are made of two C-shaped channels arranged side by side. It will of course be appreciated that the first and second plates 22, 23 may be formed of a variety of materials and configurations commonly used in the art, such as being formed as i-beams.

Fig. 6 is a perspective view of the bracket 40 connecting the first plate 22 and the corresponding guide rail. As shown, the bracket 40 is an L-shaped bracket including a horizontal arm 42 and a vertical arm 44 perpendicular to each other, wherein the horizontal arm 42 is fixed to the bottom side of the first plate 22 by a fastening means such as a bolt, and the vertical arm 44 is fixed to the top end of the corresponding guide rail by a fastening means such as a bolt. The second plate 23 (not shown) may also take the same configuration.

Fig. 7 shows an exploded perspective view of the connection between the bracket 40 and the corresponding beam. It will be seen that a stack 46 of rubber blocks may be provided between the first plate 22 and the associated horizontal arm portion 42 of the bracket to act as a shock absorber. Although not shown in the drawings, the second plate 23 may also adopt the same configuration.

While the invention has been described with reference to an exemplary embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. An elevator system, the elevator system comprising:

a car and a counterweight configured to travel along the guide rail unit;

a machine positioned above the car and configured to drive a tension member;

a top level structure on which the machine is mounted;

wherein the roof structure is supported only by the rail units;

wherein the guide rail unit comprises at least one car guide rail and at least one counterweight guide rail; and is

The top structure comprises oppositely arranged machine beams for mounting the machine and rope end beams for fixing the tension member, and a counter-rope wheel component connected between the machine beams and the rope end beams, wherein the machine beams are connected to one of the at least one car guide rail and the at least one counterweight guide rail through brackets, and the rope end beams are connected to the other of the at least one car guide rail and the at least one counterweight guide rail through brackets.

2. The elevator system of claim 1, wherein the counterweight is disposed rearward of the car.

3. The elevator system of claim 1, wherein the counterweight is disposed to a side of the car.

4. The elevator system of claim 1, wherein the at least one counterweight guide rail comprises a pair of hollow counterweight guide rails and the counterweight comprises two counterweight portions disposed in the hollow guide rails, respectively.

5. The elevator system of claim 1, wherein the machine beam and the rope end beam are both made of C-channel steel.

6. The elevator system of claim 1, wherein the bracket includes two mutually perpendicular arms, one of which is secured to the machine beam or the rope hitch and the other of which is secured to a corresponding guide rail.

7. Elevator system according to claim 6, characterized in that a damping device is arranged between the machine beam or the rope end beam and the associated bracket arm.

8. The elevator system of claim 1, wherein the tension member is a round rope.

9. The elevator system of claim 1, wherein the tension member is a flat belt.

10. The elevator system of claim 1, wherein the machine is a motor.