Elevator system with three combined guide points for elevator car and counterweight
By adopting three guide rail arrangement schemes in the elevator system, including a combination of double guide rails and single guide rails, the conflict between guide rail stability and cost saving is resolved, and the space utilization efficiency of the shaft and the installation speed are improved.
Patent Information
- Application Number
- CN202511137344.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-08-14
- Filing Date
- 2025-08-14
- Publication Date
- 2026-03-03
AI Technical Summary
In existing elevator systems, there is a conflict between the stability of the guide rails and cost savings, and the arrangement of the guide rails occupies a large amount of space, affecting the space utilization efficiency of the shaft.
A three-rail arrangement scheme is adopted, in which two rails are double rails, used to guide the elevator car and counterweight respectively, and the third rail is a single rail, arranged on different sides of the rectangular shaft, and connected to the elevator car and counterweight through a 2:1 suspension system. The drive machine and pulleys are arranged at the top or bottom of the shaft to save space.
This achieves stable guidance for the elevator system, while reducing the number of guide rails and material costs, and improving the space utilization efficiency and installation speed of the shaft.
Smart Images
Figure CN121591085A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to an elevator system for transporting goods and / or passengers. The elevator system includes an elevator car, a counterweight kinematically coupled to the elevator car, and a plurality of guide rails. Background Technology
[0002] It is generally known to use guide rails to guide the corresponding movement of the elevator car and its counterweight. It is also known that the arrangement of these guide rails depends on the arrangement of the elevator car, counterweight, and associated drive components relative to each other and within the hoistway. However, there is a conflict between ensuring sufficiently robust guidance of the moving components and reducing the cost of expensive guide rails. Summary of the Invention
[0003] In this regard, the purpose of this disclosure is to provide an improved elevator system that avoids the known disadvantages of the prior art.
[0004] This is addressed by the elevator system according to the independent claim. Alternative embodiments are the subject of the dependent claims.
[0005] According to one aspect, an elevator system for transporting goods and / or passengers is provided. The elevator system includes an elevator car, a counterweight kinematically coupled to the elevator car, and a plurality of guide rails. The guide rails extend parallel to each other (and can be fixed to the walls of the shaft) and guide the elevator car and counterweight during upward and downward movement. A total of three guide rails (meaning exactly / no more or less) spaced apart from each other are provided. Each guide rail can extend continuously from the bottom to the top of the shaft. At least one of these guide rails can be constructed as a double guide rail, meaning having a first guide section for receiving / holding / guiding the elevator car and a second guide section for receiving / holding / guiding the counterweight. This makes it possible to reduce the number of guide rails required while still achieving sufficiently stable guidance of the elevator car and counterweight. Simultaneously, this allows the shaft to be used in a space-dense manner, as the elevator car can be specifically designed to be as large as possible.
[0006] According to one approach, three guide rails are arranged on different sides of the imaginary rectangle. These three guide rails can be arranged on three different walls of the rectangular shaft. This allows for robust support to be provided with as few guide rails as possible.
[0007] On one hand, the first and second guide rails are each constructed as dual guide rails. This makes the different guide rails particularly space-saving.
[0008] According to one aspect, the first and second guide rails are each arranged on opposite sides of an imaginary rectangle. This allows for robust support while simultaneously enabling a space-saving arrangement of the guide rails.
[0009] According to one aspect, several track sections of the guide portion of at least one dual-rail system can be arranged parallel to each other. This makes the guide rails even more space-efficient.
[0010] On one hand, the track sections of at least one double-rail guide section can also be arranged at an angle (or perpendicular) to each other. This ensures a simpler design for the elevator car and counterweight guiding device.
[0011] According to one aspect, at least one dual guide rail is constructed as a single part (i.e., a part formed entirely from one material). This simplifies the production process of the guide rail.
[0012] On one hand, the third guide rail is constructed as a single guide rail (with exactly one guide section). This ensures that the elevator system structure is as simple as possible.
[0013] According to one aspect, the third guide rail can be arranged on one side of the rectangle, which is perpendicular to the other side including the first guide rail (to which the first guide rail is fixed) and / or perpendicular to the other side including the second guide rail (to which the second guide rail is fixed). This again ensures a simple structure, but at the same time ensures a structure as robust as possible for achieving stable guidance.
[0014] On one hand, the third guide rail is arranged at a distance from the center of the first car side of the elevator car. This allows the third guide rail to be cleverly installed in a suitable area of the shaft.
[0015] On one hand, three guide rails are arranged on opposite sides of the elevator car. This ensures that the elevator car is guided with sufficient stability.
[0016] On one hand, the 2:1 suspension system connects the elevator car and counterweight to each other. This allows the elevator system to benefit to a great extent from the space-saving arrangement of the guide rails.
[0017] According to one aspect, the drive mechanism and / or drive pulleys for moving the elevator car are arranged above or below the elevator car and counterweight. According to this aspect or the other aspect, when viewed from the top or bottom of the hoistway, the drive mechanism and / or drive pulleys at least partially cover the elevator car and / or counterweight. This allows additional components to be accommodated in the smallest possible space.
[0018] On one hand, the elevator car is connected to a tension component with a downward-suspension structure.
[0019] In other words, the proposed idea is to combine the (three) guide rails used for the elevator car and its counterweight in order to seek better shaft efficiency.
[0020] Two (first and second) guide rails can be used to guide the counterweight and car. These guide rails can have the structural function to withstand the engagement of the car and counterweight safety clamps. Furthermore, different constructive solutions can be used as steel profiles or even sheet metal geometries.
[0021] The third guide rail is used solely to restrict side-to-side car movement. This concept will provide the following benefits: a) improved hoistway efficiency by reducing the distance between the car wall and the hoistway wall; b) significant savings in guide rail material costs and a reduction in the number of guide rail supports; and c) savings in on-site installation time. Attached Figure Description
[0022] Embodiments of this disclosure, which are by way of example only, will be described below with reference to the figures. In the figures:
[0023] Figure 1 A top view of the elevator system inside the shaft according to the first embodiment is shown;
[0024] Figure 2 It shows Figure 1 A schematic side view of the elevator system; and
[0025] Figure 3 A top view of another elevator system inside the shaft according to the second embodiment is shown.
[0026] In the following description, embodiments of the present disclosure are illustrated with reference to the accompanying drawings. In the drawings, the same elements are assigned the same reference numerals. It should be noted that these embodiments are described for illustrative purposes only, and the description of the embodiments is not intended to limit the scope of the present disclosure. Detailed Implementation
[0027] Figure 1 and Figure 2 The diagram illustrates the structure of the elevator system 1 / elevator arrangement according to the first embodiment. The elevator system 1 can generally be used in the shaft 21 of a building. Alternatively or additionally, the elevator system 1 can be designed as a cantilever type.
[0028] Figure 2 The elevator car 2 and its associated counterweight 3 are also shown suspended in the hoistway 21 by means of a 2:1 suspension system 16. A drive mechanism 17 is arranged in the upper region of the hoistway 21, which in turn drives a drive pulley 18. The drive pulley 18 is connected to the elevator car 2 and the counterweight 3 in a conventional manner via a tension member 22 (such as a rope or belt), which is driven / deflected by several deflecting sheaves 25. By rotating the drive pulley 18 in a corresponding (first or second) direction of rotation, the elevator car 2 and the counterweight 3 thus move up and down in the hoistway 21 in a conventional manner.
[0029] It can also be seen that the tension member 22 is housed in the elevator car 2 via the lower suspension structure 23. Therefore, the tension member 22 passes under the elevator car 2 and is guided on its underside by the deflection sheave 25.
[0030] As in Figure 1 The plan view also shows that there are several guide rails 4a, 4b, and 4c, which are used to guide the elevator car 2 and counterweight 3 during their upward and downward movement. These guide rails 4a, 4b, and 4c extend parallel to each other along the length of the hoistway 21. Each guide rail 4a, 4b, and 4c extends continuously from the bottom 20 to the top 19 of the hoistway 21.
[0031] In this respect, it should be noted that the guiding devices 24 are respectively attached to the elevator car 2 and the counterweight 3, which are guided along guide rails 4a, 4b, and 4c, respectively. In a typical manner, corresponding guide rollers and safety devices may be positioned between each guiding device 24 and each guide rail 4a, 4b, and 4c to ensure the safe guidance and movement of the elevator car 2 and the counterweight 3. The guiding devices 24 can be designed in different ways, such as guide shoe rollers or other devices for guiding the elevator car 2 and the counterweight 3 along guide rails 4a, 4b, and 4c, respectively.
[0032] exist Figure 1 In the example embodiment, a total of three guide rails 4a, 4b, and 4c are provided, positioned on three different sides 9a, 9b, and 9c of an imaginary rectangle 8. Those sides 9a, 9b, and 9c of the rectangle 8 may represent the walls of the shaft 21 to which the guide rails 4a, 4b, and 4c are attached indirectly (e.g., via brackets) or directly (e.g., using bolts or screws). Of course, the walls of the shaft 21 to which the guide rails 4a, 4b, and 4c are attached do not form part of the elevator system 1 itself.
[0033] Two guide rails, namely the first guide rail 4a and the second guide rail 4b, are used to guide both the elevator car 2 and the counterweight 3. The first guide rail 4a and the second guide rail 4b are arranged on opposite sides 9a and 9c of the rectangle 8. The (third) side 9c of the rectangle 8 can be the side where the door of the elevator car 2 is located, and therefore also the side where the landing door is located. The (first) side 9a of the rectangle 8 can be the side where the (permanently enclosed) rear side of the elevator car 2 is located. Alternatively, the first side 9a of the rectangle 8 can also be the side where the door of the elevator car 2 is located, and therefore also the side where the landing door is located.
[0034] The first guide rail 4a and the second guide rail 4b are designed as double guide rails 5 because they each have two guide sections 6 and 7, one for guiding the elevator car 2 and the other for guiding the counterweight 3.
[0035] according to Figure 1The first guide rail 4a and the second guide rail 4b each have two track sections 10 and 11, which extend into / approach the corresponding guide device 24 of the elevator car 2 or the counterweight 3. These track sections 10 and 11 can be aligned parallel to each other or perpendicular to each other (viewed in cross-section), such as... Figure 1 As shown in the diagram. Each track segment 10, 11 is, in turn, part of the guide segments 6, 7.
[0036] In addition to the first guide rail 4a and the second guide rail 4b, there is a third guide rail 4c. The third guide rail 4c is designed as a single guide rail 12 and therefore has only one track section that interacts only with one guide device 24 (i.e., the guide device 24 of the elevator car 2).
[0037] The third guide rail 4c is arranged on the other (second) side 9b of the rectangle 8, that is, the side 9b that is perpendicular to the side 9a of the rectangle 8 to which the first guide rail 4a is attached and perpendicular to the side 9c of the rectangle 8 to which the second guide rail 4b is attached. The sides of the elevator car 2 can be arranged facing both sides 9b and 9d. As an alternative or addition to the previously explained arrangement of the elevator car doors / landings, the second side 9b of the rectangle 8 can be the door of the elevator car 2, and therefore also the side to which the landing doors are arranged.
[0038] Therefore, all three guide rails 4a, 4b, and 4c together span the square / rectangle 8.
[0039] It can also be seen that the third guide rail 4c is arranged toward the first car side 14 (e.g., the front side) of the elevator car 2, while the other two guide rails 4a and 4b are arranged toward the second car side 15 (e.g., the rear side) of the elevator car 2.
[0040] The third guide rail 4c is arranged laterally offset from the center 13 (or offset from the longitudinal direction of the hoistway 21 and arranged on the central axis as viewed from the first car side 14). Figure 1 In this arrangement, the third guide rail 4c is positioned closer to the second guide rail 4b than to the first guide rail 4a. This arrangement allows the third guide rail 4c to be positioned to the side of the elevator car 2 door or landing door.
[0041] One side 9d of rectangle 8 may not have a guide rail. In this embodiment, the distance between this (fourth) side 9d and the elevator car 2 is... Figure 1 The depth is marked with the letter "d" and is less than the depth of elevator car 2 (the distance between the first car side 14 and the second car side 15).
[0042] according to Figure 3 As can be seen from the second embodiment shown, the depth of the elevator car 2 can also be many times that distance d.
[0043] Figure 3The first guide rail 4a and the second guide rail 4b are shown in slightly more detail, and it can also be seen that they are preferably implemented as one-piece / integrated guide rails. Each guide rail 4a, 4b, 4c may be constructed from steel profiles or metal plates. The base portions of the two guide portions 6, 7 connected to the first guide rail 4a and the second guide rail 4b may be bent at 90° between the two guide portions 6, 7.
[0044] All other details of the second embodiment example largely correspond to those of the first embodiment example; therefore, for the sake of brevity, reference is made to the first embodiment example regarding another construction and function.
[0045] Reference Symbol List
[0046] 1. Elevator System
[0047] 2. Elevator car
[0048] 3 pairs of weights
[0049] 4a First guide rail
[0050] 4b Second guide rail
[0051] 4c Third Guide Rail
[0052] 5 Dual guide rails
[0053] 6. First Guiding Section
[0054] 7 Second Guiding Section
[0055] 8 Rectangles
[0056] 9a The first side of the rectangle
[0057] 9b The second side of the rectangle
[0058] 9c The third side of the rectangle
[0059] The fourth side of a 9d rectangle
[0060] 10 First Track Section
[0061] 11 Second Track Section
[0062] 12 Single Guide Rail
[0063] 13 Centers
[0064] 14 First Car Side
[0065] 15 Second Car Side
[0066] 16 Suspension System
[0067] 17. Drive machine
[0068] 18 Drive pulleys
[0069] 19 Top
[0070] 20 Bottom
[0071] 21 shafts
[0072] 22 Tension members
[0073] 23. Lower suspension structure
[0074] 24 Guiding Device
[0075] 25. Deflection rope pulley.
Claims
1. An elevator system (1) for transporting goods and / or passengers, said elevator system (1) comprising: Elevator car (2), The counterweight (3) that is kinematically connected to the elevator car (2), and A number of guide rails (4a, 4b, 4c) extend parallel to each other and guide the elevator car (2) and the counterweight (3) during their upward and downward movement. Its features A total of three guide rails (4a, 4b, 4c) are provided, which are spaced apart from each other, and at least one of these guide rails (4a, 4b, 4c) has a first guide portion (6) for receiving the elevator car (2) and a second guide portion (7) for receiving the counterweight (3).
2. The elevator system (1) according to claim 1, characterized in that, The three guide rails (4a, 4b, 4c) are arranged on different sides (9a, 9b, 9c) of the imaginary rectangle (8).
3. The elevator system (1) according to any one of claims 1 or 2, characterized in that, The first guide rail (4a) and the second guide rail (4b) each have a first guide portion (6) and a second guide portion (7).
4. The elevator system (1) according to claim 3, characterized in that, The first guide rail (4a) and the second guide rail (4b) are respectively arranged on opposite sides (9a, 9c) of the imaginary rectangle (8).
5. The elevator system (1) according to any one of claims 1 to 4, characterized in that, When viewed in cross-section, the guide sections (4, 5) of the same guide rail (4a, 4b) protrude parallel to each other.
6. The elevator system (1) according to any one of claims 1 to 4, characterized in that, When viewed in cross-section, the guide sections (4, 5) of the same guide rail (4a, 4b) and their track segments (10, 11) protrude at an angle to each other, particularly at an angle of 90°.
7. The elevator system (1) according to any one of claims 1 to 6, characterized in that, At least one dual guide rail (5) is constructed as a single unit.
8. The elevator system (1) according to any one of claims 1 to 7, characterized in that, The third guide rail (4c) is constructed as a single guide rail (12).
9. The elevator system (1) according to claim 8, characterized in that, The third guide rail (4c) is arranged on one side (9b) of the rectangle (8), the side (9b) being perpendicular to the other side (9a) including the first guide rail (4a) and / or perpendicular to the other side (9c) including the second guide rail (4b).
10. The elevator system (1) according to any one of claims 8 and 9, characterized in that, The third guide rail (4c) is arranged at a distance from the center (13) of the first car side (14) of the elevator car (2).
11. The elevator system (1) according to any one of claims 1 to 10, characterized in that, The three guide rails (4a, 4b, 4c) are arranged on the opposite sides (14, 15) of the elevator car (2).
12. The elevator system (1) according to any one of claims 1 to 11, characterized in that, The 2:1 suspension system (16) connects the elevator car (2) and the counterweight (3) to each other.
13. The elevator system (1) according to any one of claims 1 to 12, characterized in that, The drive mechanism (17) and / or drive pulleys (18) for moving the elevator car (2) are arranged above or below the elevator car (2) and the counterweight (3).
14. The elevator system (1) according to claim 13, characterized in that, When viewed from the top (19) or bottom (20) of the shaft (21), the drive mechanism (17) and / or the drive pulley (18) at least partially cover the elevator car (2) and / or the counterweight (3).
15. The elevator system (1) according to any one of claims 1 to 14, characterized in that, The elevator car (2) is connected to a tension member (22) having a lower suspension structure (23).