Arrangement structure of elevator without machine room
By optimizing the arrangement of the car and machine beam in a machine-room-less elevator, and by using cantilevered car sheaves and inclined counterweight sheaves, combined with combined guide rail supports and shock-absorbing pads, the problem of low shaft space utilization was solved, achieving more efficient space utilization and cost reduction.
Patent Information
- Application Number
- CN202520467330.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing machine-room-less elevators have low utilization rates of shaft space, especially in shallow pit shafts where too much space is occupied, making it impossible to effectively utilize the space at the top floor and bottom of the pit.
The car and machine beam are set on opposite sides in the hoistway. The car sheave is cantilevered, and the main engine and counterweight rope head assembly are distributed at an angle. Combined with the combined guide rail support and shock-absorbing pad structure, the winding method of the traction rope is optimized.
It effectively reduces the space occupied by the top floor and bottom of the shaft, improves space utilization, reduces elevator costs and vibration noise, and is suitable for applications with limited shaft space.
Smart Images
Figure CN223892226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a machine room-less elevator, and more particularly to a machine room-less elevator layout structure. Background Technology
[0002] Elevators are classified into machine room elevators and machine room-less elevators based on whether they have a machine room. Machine room-less elevators do not require a dedicated enclosed machine room in the building to install the elevator drive unit, control cabinet, speed governor, and other equipment. The main unit, drive cabinet, and control cabinet of a machine room-less elevator are installed in the upper part of the shaft, saving building space.
[0003] In existing technologies, the main unit of a machine room-less elevator is typically installed on a machine support beam above the hoistway, with both the main unit frame and the main unit located above the car. In this type of machine room-less elevator, the projections of the car and the machine support beam on the horizontal plane at least partially overlap. Therefore, to avoid interference, a higher ceiling space is required to install the main unit. To save ceiling space, a car bottom anti-rope sheave beam is usually installed on the lower beam at the bottom of the car, allowing the traction rope to pass under the car, avoiding the overhead space occupied by a sheave installed at the top of the car. However, this occupies more floor space, resulting in low hoistway space utilization and making it unsuitable for use in shallow pit hoistways. Utility Model Content
[0004] The purpose of this invention is to provide a machine room-less elevator layout structure. This invention features reduced space occupation in the elevator shaft top floor and pit.
[0005] The technical solution of this utility model is as follows: A machine room-less elevator layout structure includes a car, a machine support beam extending to the inner wall of the shaft at both ends on one side of the car, and the vertical projection plane of the car and the vertical projection plane of the machine support beam do not coincide; an upper beam is provided above the car, and a car sheave located on one side of the upper beam is cantilevered on the upper beam.
[0006] In the aforementioned machine room-less elevator layout structure, the machine support beam is equipped with a main unit and a counterweight rope head assembly, a counterweight device is provided below the machine support beam, and a counterweight rope pulley is provided on the top of the counterweight device.
[0007] In the aforementioned machine room-less elevator layout structure, a combined guide rail bracket is also provided below the machine support beam, and counterweight guide rails are respectively located on both sides of the counterweight device on the combined guide rail bracket.
[0008] In the aforementioned machine room-less elevator layout structure, a first car guide rail and a second car guide rail are symmetrically arranged on both sides of the car. The first car guide rail is installed on a combined guide rail bracket, and the second car guide rail is installed on the inner wall of the shaft through the car guide rail bracket. A car rope head assembly is also provided on the second car guide rail.
[0009] In the aforementioned machine room-less elevator layout structure, the machine support beam includes two support beams, and mounting holes are provided on the side wall of the shaft. The two ends of each support beam extend into the corresponding mounting holes, and a shock-absorbing pad is provided between the bottom of the support beam and the mounting hole.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] This utility model separates the machine beam and the car into two sides in the hoistway, with their projection surfaces not overlapping. This effectively utilizes the hoistway space on the car side, reduces the occupation of the top floor space of the hoistway, and avoids interference between the main unit and the top of the car. By placing the car sheave on top and adopting a cantilever installation structure, the installation space of the guide shoe on the car can be effectively avoided, reducing the requirements for the top floor and pit depth.
[0012] Therefore, this utility model has the feature of reducing the space occupied by the top floor and bottom pit of the elevator shaft, which is beneficial to the application of machine room-less elevators in elevators with limited shaft space. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a structural schematic diagram of the machine tool beam.
[0015] Figure 3 This is a schematic diagram of the elevator layout structure on the shaft facade.
[0016] Figure 4 This is a schematic diagram of the rope winding structure of the main unit, car, and counterweight device.
[0017] The labels in the attached diagram are as follows: 1. Car; 11. Upper beam; 12. Cantilever; 13. Car sheave; 14. First car guide rail; 15. Second car guide rail; 151. Car guide rail bracket; 16. Car rope head assembly; 2. Hoistway; 21. Machine support beam; 22. Support beam; 23. Shock absorber; 3. Main unit; 31. Counterweight rope head assembly; 32. Counterweight device; 33. Counterweight sheave; 34. Combined guide rail bracket; 35. Counterweight guide rail; 4. Traction rope. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 according to the specific circumstances.
[0020] Example:
[0021] like Figures 1-3 As shown, a machine room-less elevator layout includes a car 1. One side of the car 1 is provided with a machine support beam 21 extending to the inner wall of the hoistway 2 at both ends. The vertical projection plane of the car 1 and the vertical projection plane of the machine support beam 21 do not coincide, thereby reducing the top floor space. Above the car 1, there is an upper beam 11. The upper beam 11 is equipped with a car sheave 13 located on one side of the upper beam 11 through a cantilever 12. By placing the car sheave 13 on the top and using the cantilever 12 installation structure, the installation space of the guide shoe on the car 1 can be effectively avoided, reducing the requirements for the top floor spacing and pit depth.
[0022] The machine support beam 21 is equipped with the main unit 3 and the counterweight rope head assembly 31. A counterweight device 32 is located below the machine support beam 21, and the top of the counterweight device 32 has inclined counterweight rope pulleys 33. Installing the counterweight rope head assembly 31 on the machine support beam 21 significantly reduces the strength requirements of the guide rails compared to existing guide rail support methods, thereby reducing elevator costs. The inclined distribution of the counterweight rope pulleys 33 effectively reduces the lateral distance of the shaft 2, thus saving lateral space in the shaft 2 and improving space utilization.
[0023] Below the machine beam 21, there is also a combined guide rail bracket 34, on which counterweight guide rails 35 are respectively located on both sides of the counterweight device 32.
[0024] The car 1 has a first car guide rail 14 and a second car guide rail 15 symmetrically arranged on both sides. The first car guide rail 14 is mounted on a combined guide rail bracket 34, and the second car guide rail 15 is mounted on the inner wall of the hoistway 2 through a car guide rail bracket 151. The second car guide rail 15 is also equipped with a car rope head assembly 16. The combined guide rail bracket 34 simultaneously mounts the counterweight guide rail 35 and the first car guide rail 14, resulting in a more compact structure that saves material costs and space. Furthermore, fixing the car rope head assembly 16 to the second car guide rail 15 further simplifies the structure.
[0025] The machine support beam 21 consists of two support beams 22. The side wall of the hoistway 2 has mounting holes corresponding to the support beams 22. Both ends of each support beam 22 extend into the corresponding mounting holes. A shock-absorbing pad 23 is provided between the bottom of the support beam 22 and the mounting hole. The shock-absorbing pad 23 creates a flexible connection between the machine support beam 21 and the mounting holes, thereby reducing vibration and noise during elevator operation.
[0026] like Figure 4 As shown, the traction rope 4 in this utility model is wound in the following way: one end of the traction rope 4 is fixedly connected to the counterweight rope head assembly 31, the other end of the traction rope 4 passes down around the counterweight rope wheel 33 and then passes up around the traction wheel of the main unit 3, then passes down around the two car rope wheels 13, and finally is fixed up onto the car rope head assembly 16.
[0027] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.
Claims
1. A machine-room-less elevator layout structure, characterized in that: Includes a car (1), one side of which is provided with a machine beam (21) extending to the inner wall of the hoistway (2) at both ends, the vertical projection plane of the car (1) and the vertical projection plane of the machine beam (21) do not coincide; an upper beam (11) is provided above the car (1), and a car rope pulley (13) located on one side of the upper beam (11) is installed on the upper beam (11) through a cantilever (12).
2. The machine-room-less elevator layout structure according to claim 1, characterized in that: The machine beam (21) is equipped with a main unit (3) and a counterweight rope head assembly (31). A counterweight device (32) is provided below the machine beam (21), and a counterweight rope pulley (33) is provided on the top of the counterweight device (32).
3. The machine-room-less elevator layout structure according to claim 2, characterized in that: Below the machine beam (21) is a combined guide rail bracket (34), and the combined guide rail bracket (34) is provided with counterweight guide rails (35) located on both sides of the counterweight device (32).
4. The machine-room-less elevator layout structure according to claim 3, characterized in that: The car (1) is symmetrically provided with a first car guide rail (14) and a second car guide rail (15) on both sides. The first car guide rail (14) is installed on the combined guide rail bracket (34), and the second car guide rail (15) is installed on the inner wall of the hoistway (2) through the car guide rail bracket (151). The second car guide rail (15) is also provided with a car rope head assembly (16).
5. The machine-room-less elevator layout structure according to claim 1, characterized in that: The machine support beam (21) includes two support beams (22). The side wall of the shaft (2) is provided with mounting holes. Both ends of each support beam (22) extend into the corresponding mounting holes. A shock-absorbing pad (23) is provided between the bottom of the support beam (22) and the mounting hole.