Elevator hoisting system

Abstract

The utility model provides a kind of elevator traction system, belong to elevator traction system technical field, comprising: host computer traction wheel;Counterweight device, including counterweight frame, first counterweight guide wheel, second counterweight guide wheel and counterweight rope head component;Car device, including car frame, first car roof guide wheel, fourth car roof guide wheel, second car roof guide wheel, third car roof guide wheel and car rope head component;Machine room is fixed with counterweight side machine room guide wheel, first car side machine room guide wheel and second car side machine room guide wheel.The utility model has the beneficial effect that: in the long and narrow shaft of depth greater than width, 4:1 traction ratio is realized, and the output torque and steel wire rope tension required by host computer are effectively reduced;At the same time, steel wire rope forms multiple parallel load-bearing sections on the counterweight side and the car side, improves the system operation stability, and fully utilizes the rear space of shaft, avoids interference with car door mechanism.

Description

Technical Field

[0001] This utility model belongs to the technical field of elevator traction systems and relates to an elevator traction system. Background Technology

[0002] As an indispensable vertical transportation tool in modern buildings, the design and layout of elevators directly affect the space utilization efficiency of buildings and the passenger riding experience. Especially in high-rise buildings or narrow shaft environments, how to effectively utilize limited space, improve system operation stability and reduce equipment complexity has become a key challenge in design.

[0003] Currently, traditional elevator traction systems mostly adopt a 2:1 traction ratio structure, where the steel wire rope forms two parallel load-bearing sections between the car and the counterweight. While this structure is relatively simple, it has the following drawbacks in long, narrow shafts where the depth is greater than the width: Due to the 2:1 traction ratio limitation, the main motor requires a larger output torque to drive the car and counterweight, which not only increases the motor power demand but also leads to higher energy consumption; the car top typically only has two sets of guide wheels (one at the front and one at the rear), resulting in fewer suspension points and difficulty in effectively suppressing car swaying at high speeds, affecting passenger comfort; traditional designs often fail to fully utilize the rear space of the shaft, easily interfering with the car door mechanism and limiting the design flexibility of car size and load capacity; the car top guide wheels are usually covered by shields, requiring maintenance personnel to disassemble large components during inspection, cleaning, or replacement, increasing maintenance difficulty and downtime. In summary, there is significant room for improvement. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an elevator traction system.

[0005] The objective of this utility model can be achieved through the following technical solution: an elevator traction system, comprising:

[0006] The main traction sheave is installed in the machine room at the top of the shaft;

[0007] The counterweight device is located at the rear of the shaft and includes a counterweight frame, a first counterweight guide wheel fixed to one side of the counterweight frame, a second counterweight guide wheel fixed to the other side of the counterweight frame, and a counterweight rope head assembly fixed to the counterweight frame.

[0008] The car assembly includes a car frame, a first car top guide wheel fixed to the left end of the first upper beam on the front side of the top of the car frame and a fourth car top guide wheel fixed to the right end, a second car top guide wheel fixed to the left end of the second upper beam on the rear side of the top of the car frame and a third car top guide wheel fixed to the right end, and a car rope head assembly fixed to the end of the first upper beam.

[0009] The machine room is equipped with guide wheels for the counterweight side, guide wheels for the first car side, and guide wheels for the second car side.

[0010] One end of the wire rope is fixed to the counterweight rope head assembly, and the other end is fixed to the car rope head assembly. After the wire rope is led out from the counterweight rope head assembly, it passes down the second counterweight guide wheel, passes up the counterweight side machine room guide wheel, passes down the first counterweight guide wheel, enters and passes the main traction sheave. After being led out from the other side of the main traction sheave, it passes over the main machine side mechanical guide wheel, then passes down the first car top guide wheel and the second car top guide wheel located at the front of the car top, passes up the first car side machine room guide wheel and the second car side machine room guide wheel, passes down the third car top guide wheel and the fourth car top guide wheel, and is fixed to the car rope head assembly.

[0011] In the aforementioned elevator traction system, the first car top guide wheel and the fourth car top guide wheel are respectively fixed to the left and right ends of the first upper beam, and the second car top guide wheel and the third car top guide wheel are respectively fixed to the left and right ends of the second upper beam.

[0012] In the aforementioned elevator traction system, the first upper beam and the second upper beam are arranged parallel to each other along the front-rear direction of the car and are respectively located in the front and rear areas of the car top, so that the first car top guide wheel, the second car top guide wheel, the third car top guide wheel and the fourth car top guide wheel form four separate suspension points in the horizontal plane.

[0013] In one of the elevator traction systems described above, a main machine side mechanical guide wheel is also included, which is fixed to the machine room structure on the rope-out side of the main machine traction wheel.

[0014] In one of the elevator traction systems described above, the wire rope is led out from the main traction sheave, passes around the main mechanical guide sheave on the main side, and then extends downward to the first car top guide sheave and the second car top guide sheave.

[0015] In one of the elevator traction systems described above, the first counterweight guide wheel and the second counterweight guide wheel are located on both sides of the counterweight frame along the width of the shaft.

[0016] In the aforementioned elevator traction system, the first car-side machine room guide wheel and the second car-side machine room guide wheel are fixed side by side on the top beam of the machine room, and their axles are parallel to each other.

[0017] In one of the elevator traction systems described above, the car rope head assembly includes a rope head cone sleeve, a Babbitt alloy filled in the rope head cone sleeve, and a rope head screw with one end embedded in the Babbitt alloy, the other end of which is fixed to the end of the first upper beam.

[0018] In one of the elevator traction systems described above, the first car top guide wheel, the second car top guide wheel, the third car top guide wheel, and the fourth car top guide wheel are all exposed above the top of the car.

[0019] In the aforementioned elevator traction system, the counterweight-side machine room guide wheel, the first car-side machine room guide wheel, and the second car-side machine room guide wheel all include a wheel body and a bearing installed inside the wheel body.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: By arranging the counterweight device on the rear side of the hoistway and setting multiple sets of guide wheels on both sides of the counterweight frame and in the front and rear areas of the car top, and cooperating with a specific rope winding path, a 4:1 traction ratio is achieved in a narrow hoistway where the depth is greater than the width, effectively reducing the output torque required by the main unit and the tension of the wire rope; at the same time, the wire rope forms multiple parallel load-bearing sections on both the counterweight side and the car side, improving the stability of system operation and making full use of the space at the rear of the hoistway, avoiding interference with the car door mechanism; fixing the first and fourth car top guide wheels to both ends of the front upper beam and the second and third car top guide wheels to both ends of the rear upper beam makes the position of each guide wheel clear and the installation stable, which is convenient for assembly and positioning, and at the same time lays the structural foundation for the subsequent formation of a four-point suspension layout, avoiding uneven loading or force distribution on the guide wheels. Adding a mechanical guide wheel to the main machine side and fixing it to the machine room structure on the rope output side of the main machine can guide the direction and constrain the path of the wire rope drawn from the main machine traction wheel, preventing the wire rope from swaying or rubbing against the shaft wall before entering the car top guide wheel, and ensuring that the rope winding trajectory is stable and reliable. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the elevator traction system of this utility model.

[0022] Figure 2 This is a schematic diagram of the wire rope winding of the elevator traction system of this utility model.

[0023] In the diagram, 1. Main traction sheave; 2. Counterweight frame; 3. First counterweight guide sheave; 4. Counterweight side machine room guide sheave; 5. Second counterweight guide sheave; 6. Counterweight rope head assembly; 7. Main traction side mechanical guide sheave; 8. First car top guide sheave; 9. Second car top guide sheave; 10. First car side machine room guide sheave; 11. Second car side machine room guide sheave; 12. Third car top guide sheave; 13. Fourth car top guide sheave; 14. Car rope head assembly; 15. First upper beam; 16. Second upper beam. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0030] like Figure 1 , Figure 2 As shown, an elevator traction system includes:

[0031] The main traction sheave 1 is installed in the machine room at the top of the shaft;

[0032] The counterweight device, located at the rear of the shaft, includes a counterweight frame 2, a first counterweight guide wheel 3 fixed to one side of the counterweight frame 2, a second counterweight guide wheel 5 fixed to the other side of the counterweight frame 2, and a counterweight rope head assembly 6 fixed to the counterweight frame 2.

[0033] The car assembly includes a car frame, a first car top guide wheel 8 and a fourth car top guide wheel 13 fixed to the left end of the first upper beam 15 on the front side of the top of the car frame, a second car top guide wheel 9 and a third car top guide wheel 12 fixed to the left end of the second upper beam 16 on the rear side of the top of the car frame, and a car rope head assembly 14 fixed to the end of the first upper beam 15.

[0034] The machine room is equipped with a counterweight side machine room guide wheel 4, a first car side machine room guide wheel 10, and a second car side machine room guide wheel 11.

[0035] One end of the wire rope is fixed to the counterweight rope head assembly 6, and the other end is fixed to the car rope head assembly 14. After the wire rope is led out from the counterweight rope head assembly 6, it passes down the second counterweight guide wheel 5, passes up the counterweight side machine room guide wheel 4, passes down the first counterweight guide wheel 3, enters and passes up the main traction sheave 1; after being led out from the other side of the main traction sheave 1, it passes around the main machine side mechanical guide wheel 7, then passes down the first car top guide wheel 8 and the second car top guide wheel 9 located on the front side of the car top, passes up the first car side machine room guide wheel 10 and the second car side machine room guide wheel 11, passes down the third car top guide wheel 12 and the fourth car top guide wheel 13, and is fixed to the car rope head assembly 14.

[0036] In this embodiment, by arranging the counterweight device at the rear of the hoistway and setting multiple sets of guide wheels on both sides of the counterweight frame 2 and in the front and rear areas of the car top, and cooperating with a specific rope winding path (3 wheels turning back on the counterweight side + 4 wheels suspended on the car side), a 4:1 traction ratio is achieved in a narrow hoistway where the depth is greater than the width, effectively reducing the output torque required by the main unit and the tension of the wire rope; at the same time, the wire rope forms multiple parallel load-bearing sections on both the counterweight side and the car side, improving the stability of the system operation and making full use of the space at the rear of the hoistway to avoid interference with the car door mechanism.

[0037] like Figure 1 , Figure 2 As shown, based on the above embodiment, the first car top guide wheel 8 and the fourth car top guide wheel 13 are respectively fixed to the left and right ends of the first upper beam 15, and the second car top guide wheel 9 and the third car top guide wheel 12 are respectively fixed to the left and right ends of the second upper beam 16.

[0038] In this embodiment, the first and fourth car top guide wheels 13 are fixed to both ends of the front upper beam, and the second and third car top guide wheels 12 are fixed to both ends of the rear upper beam, so that the position of each guide wheel is clear and the installation is stable, which facilitates assembly and positioning. At the same time, it lays the structural foundation for the subsequent formation of a four-point suspension layout and avoids uneven load or force on the guide wheels.

[0039] like Figure 1 , Figure 2 As shown, based on the above embodiment, the first upper beam 15 and the second upper beam 16 are arranged parallel to each other along the front and rear directions of the car, and are respectively located in the front and rear areas of the top of the car, so that the first car top guide wheel 8, the second car top guide wheel 9, the third car top guide wheel 12 and the fourth car top guide wheel 13 form four separate suspension points in the horizontal plane.

[0040] In this embodiment, by arranging the front and rear upper beams parallel to each other along the front and rear directions of the car in the front and rear areas of the top, the four car top guide wheels form four separate and reasonably distributed suspension points in the horizontal plane, which significantly improves the torsional stiffness and pitch resistance of the car during operation, effectively suppresses car swaying, and improves ride comfort, especially suitable for high-speed or high-stroke elevators.

[0041] like Figure 1 , Figure 2 As shown, based on the above embodiment, it also includes a main machine side mechanical guide wheel 7, which is fixed to the machine room structure on the rope-out side of the main machine traction wheel 1.

[0042] In this embodiment, a mechanical guide wheel 7 is added to the main machine side and fixed to the machine room structure on the main machine rope output side. This can guide the direction and constrain the path of the wire rope led out from the main machine traction wheel 1, preventing the wire rope from swaying or rubbing against the shaft wall before entering the car top guide wheel, and ensuring that the rope winding trajectory is stable and reliable.

[0043] like Figure 1 , Figure 2 As shown, based on the above embodiment, the wire rope is led out from the main traction sheave 1, passes around the main mechanical guide sheave 7, and then extends downward to the first car top guide sheave 8 and the second car top guide sheave 9.

[0044] In this embodiment, after passing the main traction sheave 1, the wire rope first goes around the mechanical guide sheave 7 on the main machine side, and then extends downward to the two car top guide sheaves on the front side. This path design makes the transition of the wire rope from the main machine to the car top smoother, reduces bending stress concentration, reduces wire rope fatigue wear, extends service life, and at the same time ensures that the front and rear guide sheaves on the car side are subjected to balanced forces.

[0045] like Figure 1 , Figure 2 As shown, based on the above embodiment, the first counterweight guide wheel 3 and the second counterweight guide wheel 5 are respectively located on both sides of the counterweight frame 2 along the width direction of the shaft.

[0046] In this embodiment, the first and second counterweight guide wheels 5 are respectively set on both sides of the counterweight frame 2 along the width of the shaft, so that the wire rope forms a laterally extended return path on the counterweight side, which increases the effective load-bearing width on the counterweight side, helps to balance the lateral force of the counterweight frame 2 during operation, prevents it from eccentrically wearing or getting stuck on the guide rail, and improves the stability of counterweight operation.

[0047] like Figure 1 , Figure 2 As shown, based on the above embodiment, the first car-side machine room guide wheel 10 and the second car-side machine room guide wheel 11 are fixed side by side on the top beam of the machine room, and their wheel axles are parallel to each other.

[0048] In this embodiment, the first and second car-side machine room guide wheels 11 are fixed side by side on the machine room crossbeam with parallel wheel axles to ensure that the two wheels guide the wire rope in the same direction, avoid the wire rope from twisting or crossing friction when passing through this area, reduce running resistance, reduce noise, and improve guiding accuracy.

[0049] like Figure 1 , Figure 2 As shown, based on the above embodiment, the car rope head assembly 14 includes a rope head cone sleeve, a Babbitt alloy filled in the rope head cone sleeve, and a rope head screw with one end embedded in the Babbitt alloy. The other end of the rope head screw is fixed to the end of the first upper beam 15.

[0050] In this embodiment, the classic structure of rope head cone sleeve + Babbitt alloy + rope head screw is used as the car rope head assembly 14 and fixed to the end of the upper beam. This not only provides high connection strength and good reliability, but also facilitates on-site installation and subsequent adjustment. The Babbitt alloy filling can effectively buffer impact loads, prevent wire rope pull-out, and ensure elevator safety.

[0051] like Figure 1 , Figure 2 As shown, based on the above embodiment, the first car top guide wheel 8, the second car top guide wheel 9, the third car top guide wheel 12, and the fourth car top guide wheel 13 are all exposed above the top of the car.

[0052] In this embodiment, the wheels of the four car top guide wheels are all exposed above the top of the car without any shielding cover, which greatly facilitates the visual inspection, cleaning and replacement of the guide wheels by maintenance personnel. There is no need to disassemble the car top decorative panel or large components, which significantly improves maintenance efficiency and reduces elevator downtime.

[0053] like Figure 1 , Figure 2As shown, based on the above embodiment, the counterweight side machine room guide wheel 4, the first car side machine room guide wheel 10, and the second car side machine room guide wheel 11 all include a wheel body and a bearing installed in the wheel body.

[0054] In this embodiment, the guide wheels on both the counterweight side and the car side adopt a basic structure of "wheel body + built-in bearing". This structure is simple, flexible in rotation, and has low frictional resistance, ensuring smooth sliding of the wire rope and reducing energy loss. At the same time, the bearing support can withstand radial and axial combined loads, improving the service life of the guide wheels and reducing the system failure rate.

[0055] like Figure 1 , Figure 2 As shown, this utility model provides an elevator traction system suitable for narrow shafts where the depth is greater than the width. By placing the counterweight device as a whole on the rear side of the shaft, and symmetrically arranging the first and second counterweight guide wheels 5 on both sides of the counterweight frame 2, and configuring two parallel upper beams and four sets of car top guide wheels in the front and rear areas of the car top respectively, combined with multiple sets of machine room guide wheels and main engine side mechanical guide wheels 7 rationally arranged in the machine room, a continuous and efficient wire rope routing path is constructed. This path forms a three-wheel reversal structure on the counterweight side and achieves a four-point suspension layout on the car side, achieving a high traction ratio of 4:1 overall.

[0056] Compared to the traditional 2:1 structure, this invention not only significantly reduces the required output torque and wire rope tension of the main unit, saving energy and equipment costs, but also greatly improves the torsional stiffness and anti-pitch capability of the car during operation through four separate and reasonably distributed suspension points on the top of the car, effectively suppressing swaying and improving passenger comfort. At the same time, the counterweight side guide wheels are arranged laterally to enhance the stability of counterweight operation and avoid uneven wear of the guide rails. The exposed installation of each guide wheel and the design without a shield greatly facilitate daily maintenance operations. Furthermore, the use of standardized guide wheel structure and reliable rope head components throughout the system further ensures operational safety and long-term reliability.

Claims

1. An elevator traction system, characterized in that, include: The main traction sheave is installed in the machine room at the top of the shaft; The counterweight device is located at the rear of the shaft and includes a counterweight frame, a first counterweight guide wheel fixed to one side of the counterweight frame, a second counterweight guide wheel fixed to the other side of the counterweight frame, and a counterweight rope head assembly fixed to the counterweight frame. The car assembly includes a car frame, a first car top guide wheel fixed to the left end of the first upper beam on the front side of the top of the car frame and a fourth car top guide wheel fixed to the right end, a second car top guide wheel fixed to the left end of the second upper beam on the rear side of the top of the car frame and a third car top guide wheel fixed to the right end, and a car rope head assembly fixed to the end of the first upper beam. The machine room is equipped with guide wheels for the counterweight side, guide wheels for the first car side, and guide wheels for the second car side. One end of the wire rope is fixed to the counterweight rope head assembly, and the other end is fixed to the car rope head assembly. After the wire rope is led out from the counterweight rope head assembly, it passes down the second counterweight guide wheel, passes up the counterweight side machine room guide wheel, passes down the first counterweight guide wheel, enters and passes the main traction sheave. After being led out from the other side of the main traction sheave, it passes over the main machine side mechanical guide wheel, then passes down the first car top guide wheel and the second car top guide wheel located at the front of the car top, passes up the first car side machine room guide wheel and the second car side machine room guide wheel, passes down the third car top guide wheel and the fourth car top guide wheel, and is fixed to the car rope head assembly.

2. The elevator traction system according to claim 1, characterized in that: The first car top guide wheel and the fourth car top guide wheel are respectively fixed to the left and right ends of the first upper beam, and the second car top guide wheel and the third car top guide wheel are respectively fixed to the left and right ends of the second upper beam.

3. The elevator traction system according to claim 2, characterized in that: The first upper beam and the second upper beam are arranged parallel to each other along the front and rear directions of the car, and are respectively located in the front and rear areas of the car top, so that the first car top guide wheel, the second car top guide wheel, the third car top guide wheel and the fourth car top guide wheel form four separate suspension points in the horizontal plane.

4. The elevator traction system according to claim 1, characterized in that: It also includes a main unit side mechanical guide wheel, which is fixed to the machine room structure on the rope-out side of the main unit traction sheave.

5. An elevator traction system according to claim 4, characterized in that: The wire rope is led out from the main traction sheave, passes around the main mechanical guide sheave on the side of the main machine, and then extends downward to the first car top guide sheave and the second car top guide sheave.

6. An elevator traction system according to claim 1, characterized in that: The first counterweight guide wheel and the second counterweight guide wheel are located on both sides of the counterweight frame along the width of the shaft.

7. An elevator traction system according to claim 1, characterized in that: The first car-side machine room guide wheel and the second car-side machine room guide wheel are fixed side by side on the top beam of the machine room, and their axles are parallel to each other.

8. An elevator traction system according to claim 1, characterized in that: The car rope head assembly includes a rope head cone sleeve, a Babbitt alloy filled in the rope head cone sleeve, and a rope head screw with one end embedded in the Babbitt alloy, the other end of which is fixed to the end of the first upper beam.

9. An elevator traction system according to claim 2, characterized in that: The first car top guide wheel, the second car top guide wheel, the third car top guide wheel, and the fourth car top guide wheel are all exposed above the top of the car.

10. An elevator traction system according to claim 1, characterized in that: The counterweight-side machine room guide wheel, the first car-side machine room guide wheel, and the second car-side machine room guide wheel all include a wheel body and a bearing installed inside the wheel body.

Images