Rope winding structure for machine-room-less elevator

Abstract

The utility model relates to elevator winding structure technical field, concretely is a kind of no machine room elevator winding structure, it includes: car, counterweight and steel wire rope, the car is arranged in hoistway, the car bottom is provided with first bottom wheel and second bottom wheel, the counterweight top is equipped with counterweight wheel, the top of hoistway is fixedly installed with traction machine and guide wheel, the traction machine includes traction wheel, the guide wheel is arranged in the side of the traction wheel close to the counterweight, one end of the steel wire rope is fixed in the top of hoistway, the other end of the steel wire rope is wound to the top of the traction wheel by the second bottom wheel bottom and the first bottom wheel bottom, again by the counterweight wheel bottom is wound to the top of the guide wheel and is connected with the counterweight top portion. The utility model solves the problem of low space utilization rate of the existing no machine room elevator hoistway.

Description

Technical Field

[0001] This utility model relates to the field of elevator rope winding structure technology, specifically a machine room-less elevator rope winding structure. Background Technology

[0002] Since the invention of the elevator, the utilization rate of elevator shaft space has been a crucial consideration in elevator design. With my country's urbanization and the surge in demand for high-rise buildings and compact housing, the requirements for shaft space utilization are increasingly stringent. Commercial complexes and hotels, among other settings, need to maximize leasable area, and a smaller shaft footprint can increase the building's usable floor area ratio. Simultaneously, my country's aging population is becoming increasingly severe, making the replacement or installation of elevators in older residential communities a vital public welfare project. However, existing buildings often cannot meet the shaft space requirements of traditional elevators. For these reasons, buildings often cannot provide the necessary independent machine room space for elevators, making machine room-less elevators the preferred choice. However, existing machine room-less elevators still require a certain amount of space in the shaft for the main machine, which often comes at the cost of sacrificing the lifting space of the car, thus reducing the utilization rate of the elevator shaft space.

[0003] To address the issue of space utilization in machine-room-less elevator shafts, there is an urgent need to propose a rope-winding structure for machine-room-less elevators that can significantly improve shaft utilization. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a machine room-less elevator rope winding structure to solve the problem of low space utilization in existing machine room-less elevator shafts. To achieve the above objective, the machine room-less elevator rope winding structure of this utility model includes: a car, a counterweight, and a steel wire rope. The car is installed inside the shaft, with a first bottom wheel and a second bottom wheel at the bottom of the car. A counterweight wheel is installed on the top of the counterweight. A traction machine and a guide wheel are fixedly installed on the top of the shaft. The traction machine includes a traction wheel, and the guide wheel is located on the side of the traction wheel near the counterweight. One end of the steel wire rope is fixed to the top of the shaft, and the other end of the steel wire rope winds through the bottom of the second bottom wheel and the bottom of the first bottom wheel to the top of the traction wheel, then winds through the bottom of the counterweight wheel to the top of the guide wheel and connects to the top of the counterweight.

[0005] Preferably, the hoistway is provided with a first guide rail and a second guide rail, the car is installed on the first guide rail and the second guide rail, the first guide rail is set close to the traction sheave, and the second guide rail is fixedly installed on the hoistway sidewall opposite the traction machine.

[0006] Furthermore, the first guide rail is a T-shaped guide rail and / or the second guide rail is a T-shaped guide rail.

[0007] Preferably, the first bottom wheel is mounted to one side of the bottom of the car via a wheel frame; and / or

[0008] The second bottom wheel is mounted on the other side of the bottom of the car via a wheel frame.

[0009] Preferably, the first bottom wheel and the second bottom wheel have the same diameter, and both are smaller than the diameter of the traction wheel.

[0010] Furthermore, the traction machine is fixed directly or via the first guide rail to the side wall at the top of the shaft, and the axis of the traction wheel is parallel to the side wall of the shaft.

[0011] Preferably, the counterweight wheel is suspended from the top of the counterweight by a bracket.

[0012] Preferably, the guide wheel is installed at a position higher than the horizontal center line of the traction wheel.

[0013] Preferably, the traction machine is a permanent magnet synchronous traction machine.

[0014] Preferably, the bottom of the car is connected to a compensating chain and a traveling cable.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention creates a unique "returning" structure by adding guide wheels to the counterweight side, achieving a wire rope speed ratio of 3:1 to the counterweight's running speed. Combined with the 2:1 speed ratio on the car side, the ratio of car running speed to counterweight running speed is derived to be 3:2. As a result, the required lifting height for the counterweight is only 2 / 3 of the car's lifting height. This effectively utilizes the 1 / 3 of the top shaft space saved by the counterweight, which can be used as the installation location for the machine room-less elevator traction main unit, fundamentally solving the core problem of machine room-less elevator main unit placement.

[0017] Meanwhile, the traction machine is cleverly fixed to the back side of the car guide rail. In the horizontal projection direction, the traction machine and the car running path have no overlap or interference, ensuring that the vertical lifting space available to the car reaches the maximum value of the theoretical height of the hoistway, and avoiding the loss of car travel that may be caused by traditional side-mounted main units. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the rope winding structure of this utility model.

[0019] Figure 2 This is a top view of the shaft space structure of this utility model.

[0020] Figure 3 This is a diagram of the rope winding structure of this utility model.

[0021] In the diagram: 1. Car; 2. Counterweight; 3. First bottom wheel; 4. Second bottom wheel; 5. Counterweight wheel; 6. Traction machine; 7. Traction sheave; 8. Guide wheel; 9. Wire rope; 10. First guide rail; 11. Second guide rail; 12. Support; 13. Compensating chain; 14. Traveling cable. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0024] Please see Figures 1-3 This utility model provides a technical solution: a machine room-less elevator rope winding structure, including: a car 1, a counterweight 2, and a steel wire rope 9. The car 1 is set in the hoistway. The bottom of the car 1 is provided with a first bottom wheel 3 and a second bottom wheel 4. The top of the counterweight 2 is equipped with a counterweight wheel 5. The top of the hoistway is fixedly installed with a traction machine 6 and a guide wheel 8. The traction machine 6 includes a traction wheel 7. The guide wheel 8 is set on the side of the traction wheel 7 close to the counterweight 2. One end of the steel wire rope 9 is fixed to the top of the hoistway. The other end of the steel wire rope 9 passes through the bottom of the second bottom wheel 4 and the bottom of the first bottom wheel 3 to the top of the traction wheel 7, then passes through the bottom of the counterweight wheel 5 to the top of the guide wheel 8 and connects to the top of the counterweight 2. The bottom of the car 1 is connected with a compensating chain 13 and a traveling cable 14.

[0025] In a preferred embodiment of this utility model, a first guide rail 10 and a second guide rail 11 are provided inside the hoistway. The first guide rail 10 is a T-shaped guide rail and / or the second guide rail 11 is a T-shaped guide rail. The car 1 is mounted on the first guide rail 10 and the second guide rail 11. The first guide rail 10 is set close to the traction sheave 7, and the second guide rail 11 is fixedly installed on the hoistway side wall opposite to the traction machine 6. The traction machine 6 is cleverly fixed to the back side of the guide rail of the car 1, and the running paths of the traction machine 6 and the car 1 are completely non-overlapping and non-interfering, ensuring the maximum value of the vertical lifting space available to the car.

[0026] In a preferred embodiment of this utility model, the first bottom wheel 3 is mounted on one side of the bottom of the car 1 via a wheel frame; and / or

[0027] The second bottom wheel 4 is mounted on the other side of the bottom of the car 1 via a wheel frame.

[0028] In a preferred embodiment of the present invention, the first bottom wheel 3 and the second bottom wheel 4 have the same diameter, and both are smaller than the diameter of the traction wheel 7.

[0029] In a preferred embodiment of the present invention, the traction machine is fixed directly or via the first guide rail to the side wall at the top of the shaft, and the axis of the traction wheel 7 is parallel to the side wall of the shaft.

[0030] In a preferred embodiment of the present invention, the counterweight wheel 5 is suspended from the top of the counterweight 2 by the bracket 12.

[0031] In a preferred embodiment of this utility model, the guide wheel 8 is installed at a position higher than the horizontal center line of the traction wheel 7. The high-position guide wheel 8 increases the wrap angle of the traction wheel 7 and improves the friction.

[0032] In a preferred embodiment of this utility model, the traction machine 6 is a permanent magnet synchronous traction machine.

[0033] Working principle: After the steel wire rope 9 is led out from the fixed end at the top of the shaft, it passes through the bottom groove of the second bottom wheel 4, the bottom groove of the first bottom wheel 3, the top groove of the traction wheel 7, the bottom groove of the counterweight wheel 5, and the top groove of the guide wheel 8 in sequence, and finally connects to the rope end combination at the top of the counterweight 2, forming a unique "looping" structure. The lifting height required for the counterweight is only 2 / 3 of the lifting height of the car. The 1 / 3 of the top shaft space saved by the counterweight is effectively utilized as the installation position of the traction main unit of the machine roomless elevator.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended to encompass all variations falling within the meaning and scope of equivalents of the claims within this invention, and no reference numerals in the claims should be regarded as limiting the scope of the claims.

[0035] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A roping structure for a machine-room-less elevator, characterized by comprising: include: The car (1), counterweight (2), and wire rope (9) are provided. The car (1) is located in the hoistway. The bottom of the car (1) is provided with a first bottom wheel (3) and a second bottom wheel (4). The top of the counterweight (2) is provided with a counterweight wheel (5). The top of the hoistway is fixedly installed with a traction machine (6) and a guide wheel (8). The traction machine (6) includes a traction wheel (7). The guide wheel (8) is located on the side of the traction wheel (7) close to the counterweight (2). One end of the wire rope (9) is fixed to the top of the hoistway. The other end of the wire rope (9) passes through the bottom of the second bottom wheel (4) and the bottom of the first bottom wheel (3) to the top of the traction wheel (7), then passes through the bottom of the counterweight wheel (5) to the top of the guide wheel (8) and connects to the top of the counterweight (2).

2. The machine room less elevator roping structure of claim 1, wherein, The hoistway is provided with a first guide rail (10) and a second guide rail (11). The car (1) is installed on the first guide rail (10) and the second guide rail (11). The first guide rail (10) is set close to the traction wheel (7). The second guide rail (11) is fixedly installed on the hoistway side wall opposite the traction machine (6).

3. The machine room less elevator roping structure of claim 2, wherein, The first guide rail (10) is a T-shaped guide rail and / or the second guide rail (11) is a T-shaped guide rail.

4. The machine room less elevator roping structure of claim 1, wherein, The first bottom wheel (3) is mounted on one side of the bottom of the car (1) via a wheel frame; and / or The second bottom wheel (4) is mounted on the other side of the bottom of the car (1) via a wheel frame.

5. The machine-room-less elevator rope winding structure according to claim 1, characterized in that, The first bottom wheel (3) and the second bottom wheel (4) have the same diameter, and both are smaller than the diameter of the traction wheel (7).

6. The machine room less elevator roping structure of claim 2, wherein, The traction machine (6) is fixed to the side wall of the top of the shaft directly or through the first guide rail (10), and the axis of the traction wheel (7) is parallel to the side wall of the shaft.

7. The machine room less elevator roping structure of claim 1, wherein, The counterweight wheel (5) is suspended from the top of the counterweight (2) by a bracket (12).

8. The machine room less elevator roping structure of claim 1, wherein, The guide wheel (8) is installed at a position higher than the horizontal center line of the traction wheel (7).

9. The machine room less elevator roping structure of claim 1, wherein, The traction machine (6) is a permanent magnet synchronous traction machine.

10. The machine-room-less elevator rope winding structure according to claim 1, characterized in that, The bottom of the car (1) is connected to a compensation chain (13) and a traveling cable (14).

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