A traction system suitable for multi-shaft circulation operation

Abstract

The application discloses a hoisting system suitable for multi-shaft cycle operation, which comprises multiple independent operation cars arranged in two adjacent shafts, each car is provided with a driving device located at the top of the shaft, a set of guide wheel assemblies, a counterweight located below the driving device in the shaft, a lifting device and a set of hoisting ropes, each lifting device comprises multiple lifting devices, the multiple lifting devices are divided into two groups and arranged in the two shafts, one end of the hoisting rope is connected with the counterweight, the other end of the hoisting rope is wound through the driving device and the guide wheel assemblies in sequence and then divided into multiple hoisting ropes which are connected with the lifting devices of the corresponding cars in the two shafts respectively, and the lifting device is used for hoisting the car. The application can realize multi-shaft and multi-car cycle operation, is safe and stable in operation, can save the number of elevator shafts and improve the carrying efficiency, can greatly improve the carrying capacity per unit area through intelligent scheduling, is stable in operation, and is comfortable to ride.

Description

Technical Field

[0001] This invention specifically relates to a traction system suitable for multi-well cyclic operation. Background Technology

[0002] To effectively improve the operating efficiency of elevators in high-rise buildings, various elevator systems now install two or more cars within the same shaft. These two or more cars operate independently without interference, helping to improve the utilization of building space and increase the elevator's carrying capacity. As a crucial component of the vertical transportation system within a building, the core of the elevator's mechanical components for achieving its transportation function lies in the design of the traction system components, including the car for safe passenger transport, the counterweight tractioning the car, the drive unit, the traction ropes connecting the car and the counterweight, and the guide sheaves that guide the traction ropes during the connection between the car and the counterweight. Ensuring safety and reliability while rationally arranging these components to improve the utilization of shaft space is a key direction for optimizing elevator traction systems. Currently, many publicly available elevator systems improve building space utilization by reducing the size of the machine room or by using twin elevators or similar models to increase carrying capacity. However, these two methods offer relatively limited improvements in optimizing building space utilization, and the transportation method of twin elevators differs significantly from traditional methods, resulting in a poorer riding experience and limited increase in carrying capacity.

[0003] The currently disclosed ThyssenKrupp recirculating elevator uses a forced drive method, similar to the principle of subway operation, and employs multiple cars and multiple tracks to improve the elevator's transportation efficiency. However, the invention still has the following problems: (1) Due to the use of forced drive and backpack-style suspension, the energy consumption of the elevator is greatly increased. At the same time, the backpack-style suspension makes it difficult for the car's running speed to meet the needs of high-rise buildings; (2) The high energy consumption during elevator operation does not meet the requirements of low carbon and environmental protection, and is also likely to cause a large temperature rise in the traditional elevator shaft; (3) The multiple cars running in a crisscross pattern pose a high safety hazard to the elevator's operation; (4) This invention abandons the traditional elevator shaft method and elevator installation method, fixing the elevator tracks to the building facade, which greatly alters the building and is extremely unfavorable for later maintenance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a traction system suitable for multi-shaft circulating operation, which can realize multi-shaft and multi-car circulating operation, with safe and stable operation, and can save the number of elevator shafts and improve carrying efficiency. It can also significantly improve the carrying capacity per unit area through intelligent scheduling, and the elevator runs smoothly and has a good riding comfort.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A traction system suitable for multi-shaft circulating operation includes multiple independently operating cars arranged in two adjacent shafts. Each car is equipped with a drive unit and a set of guide wheel assemblies located in the machine room at the top of the shaft, a counterweight located in the shaft below the drive unit, a lifting device, and a set of traction ropes. Each lifting device includes multiple lifting devices, which are divided into two groups and arranged in the two shafts respectively. One end of the traction rope is connected to the counterweight, and the other end passes through the drive unit and the guide wheel assembly in sequence, and then splits into multiple strands of traction ropes that are connected to the lifting devices of the corresponding cars in the two shafts respectively. The lifting device is used to lift the cars.

[0006] Furthermore, each car is connected by the respective car lifting device, and the counterweight is connected to the car lifting device by the traction rope.

[0007] According to the above technical solution, both shafts are equipped with counterweight guide rails, car guide rails, and lifting device guide rails. The counterweight 3, car 5, and lifting device 6 move up and down along their respective guide rails on the counterweight guide rail 7, car guide rail 8, and lifting device guide rail 9.

[0008] According to the above technical solution, there are two car guide rails, installed on the first vertical plane in the two hoists. Four counterweight guide rails are installed side by side on the second vertical plane, which is parallel to the first vertical plane. The center line of the drive wheel of each drive device is located on the third vertical plane. The third vertical plane is parallel to the first and second vertical planes and is located between the first and second vertical planes. Furthermore, one side of the drive device is a counterweight, and the other side is a car hoisting device.

[0009] According to the above technical solution, each lifting device includes four lifting devices, namely lifting device I, lifting device II, lifting device III and lifting device IV. The four lifting devices are divided into two groups and arranged in two shafts respectively. Each lifting device is provided with a lifting device guide rail, which is arranged vertically in the corresponding shaft.

[0010] According to the above technical solution, the guide wheel assembly includes a four-groove guide wheel I, a four-groove guide wheel II, a two-groove guide wheel I, a two-groove guide wheel II, a two-groove guide wheel III, and a two-groove guide wheel IV. The four two-groove guide wheels are arranged on the same layer, and the two four-groove guide wheels are arranged above the four two-groove guide wheels. Two-groove guide wheels I and two-groove guide wheels IV are respectively arranged above the outer sides of the two shafts, and two-groove guide wheels II and two-groove guide wheels III are respectively arranged above the inner sides of the two shafts; Lifting device I and lifting device II form one group arranged in the left shaft, while lifting device III and lifting device IV form another group arranged in the right shaft; One end of the traction rope is connected to the counterweight of the corresponding car, and the other end passes through the drive unit in sequence and is divided into four strands. The first strand is directly connected to the lifting device I of the corresponding car. The second strand passes through the two-groove guide wheel I and the two-groove guide wheel II and is connected to the lifting device III of the corresponding car. The third and fourth strands pass through the four-groove guide wheel I and the four-groove guide wheel II of the corresponding car and then separate. The third strand is directly connected to the lifting device II of the corresponding car, and the fourth strand passes through the two-groove guide wheel III and the two-groove guide wheel IV of the corresponding car and is connected to the lifting device IV of the corresponding car, thus completing the traction.

[0011] According to the above technical solution, the number of elevator cars is 2 to 4.

[0012] According to the above technical solution, the multiple guide wheel assemblies corresponding to each car are arranged in a staggered manner in space; so that the traction ropes 4 corresponding to different cars avoid each other, which can reduce the number of corresponding fixed bases and ensure that there is enough operating and maintenance space at the top. When there are 4 cars, the 4 guide wheel assemblies are arranged in pairs, and the 4 drive units and 4 guide wheel assemblies are fixedly arranged in four layers and two columns; in the same column, two drive units and two sets of guide wheel assemblies are respectively arranged on both sides of a shaft.

[0013] Furthermore, the guide wheel assembly consists of multiple guide wheels, which are arranged to divide the traction rope into four groups and guide it to four sets of car hoisting devices. Each set of car hoisting devices consists of four hoists, which are placed in pairs in two shafts. The four hoists of each set of car hoisting devices maintain the same operating speed and each has a predetermined track.

[0014] According to the above technical solution, each car is equipped with a telescopic boom, and each car is connected to the corresponding lifting device through the telescopic boom.

[0015] The elevator car is equipped with two symmetrical lifting points. Each lifting device includes two sets of lifting devices arranged in two shafts. The two sets of lifting devices consist of two lifting devices. The two lifting devices in the same set are connected to the two symmetrical lifting points on the top of the car. Due to the use of symmetrical double lifting points and the lifting device running on the track, the elevator runs smoothly and provides a good riding comfort.

[0016] According to the above technical solution, the two sets of lifting devices corresponding to the same car and distributed in the two hoists are always at the same horizontal height.

[0017] The traction rope is directly connected to the spreading device via a rope end device installed on the spreading device. The car and the spreading device are connected by a telescopic boom, which allows for engagement and disengagement through the extension and retraction of the boom. Simultaneously, the two sets of spreading devices located in the two hoists remain at the same horizontal level, meaning that the car can be switched between different hoists. Regarding how this switching is achieved, our current solution involves adding a track-changing device on a specific floor. The principle is similar to a shuttle trolley; after the car moves into position, it connects to the track-changing device, disengages from the spreading device, and then switches hoists via the track-changing device to engage with another set of spreading devices. The car then disengages from the track-changing device and resumes normal operation.

[0018] The connection method between the car and the lifting device and the operation mode of the car lifting device can realize the conversion of the car in the hoistway, that is, the function of the car running in different hoistways can be achieved by changing the connecting lifting device.

[0019] According to the above technical solution, the traction system applicable to multi-well circulation operation also includes a fixed base, which is set at the top of the well, and the drive device and guide wheel assembly are fixed on the fixed base.

[0020] The present invention has the following beneficial effects: 1. This invention enables multi-shaft and multi-car cyclic operation, ensuring safe and stable operation. It also saves on the number of elevator shafts and improves carrying efficiency. Furthermore, by allowing each car to operate independently, intelligent scheduling can significantly increase the carrying capacity per unit area. The hoisting device uses two sets of hoists to form a double hoisting point, and the hoisting device runs on the track, resulting in smooth elevator operation and a comfortable ride.

[0021] 2. Since operating three or four elevators only requires the use of two shafts, compared to the traditional four elevators with four shafts, the area of ​​the elevator shafts is greatly reduced, which is conducive to improving the utilization rate of building space. Since the three or four elevators operate independently and in a cyclical manner, the carrying capacity of the elevators can be greatly improved. Attached Figure Description

[0022] Figure 1 This is a perspective view of a traction system applicable to multi-wellway cyclic operation in an embodiment of the present invention; Figure 2 This is a front view of a traction system applicable to multi-well cyclic operation in an embodiment of the present invention; Figure 3 yes Figure 2 Top view; Figure 4 yes Figure 2 AA section view; Figure 5 This is a schematic diagram showing the arrangement of the driving device and guide wheel assembly in an embodiment of the present invention; Figure 6This is a front view of a single car in an embodiment of the present invention; Figure 7 yes Figure 6 Top view; In the diagram, 1-drive unit; 2-guide wheel assembly; 3-counterweight; 4-traction rope; 5-car; 6-sling device; 7-counterweight guide rail; 8-car guide rail; 9-sling device guide rail; 10-first vertical plane; 11-second vertical plane; 12-third vertical plane; 13-fourth vertical plane; 14-telescopic boom; 15-first car counterweight; 16-first car traction rope; 17-first car drive unit; 18-first car drive unit base; 19-the... 20-First car four-slot guide wheel I; 21-First car four-slot guide wheel II; 22-First car two-slot guide wheel I; 23-First car two-slot guide wheel II; 24-First car two-slot guide wheel III; 25-First car two-slot guide wheel IV; 26-Fixed base; 27-First car lifting device I; 28-First car lifting device II; 29-First car; 30-First car lifting device III; 31-First car lifting device IV. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 1-7 As shown, an embodiment of the present invention provides a traction system suitable for multi-shaft circulating operation, comprising multiple independently operating cars 5 arranged in two adjacent shafts. Each car 5 is correspondingly provided with a drive unit 1 located in the machine room at the top of the shaft, a set of guide wheel assemblies 2, a counterweight 3 located in the shaft below the drive unit 1, a lifting device 6, and a set of traction ropes 4. Each lifting device 6 includes multiple lifting devices, which are divided into two groups and arranged in the two shafts respectively. One end of the traction rope 4 is connected to the counterweight 3, and the other end passes through the drive unit 1 and the guide wheel assembly 2 in sequence and then splits into multiple strands of traction rope 4, which are respectively connected to the lifting devices of the corresponding cars 5 in the two shafts. The lifting device 6 is used to lift the cars 5, and when the car is located in the corresponding shaft, it is connected to the lifting device in the corresponding shaft.

[0025] Furthermore, each car 5 is connected by the respective car hoisting device 6, and the counterweight 3 is connected to the car hoisting device 6 by the traction rope 4.

[0026] Both shafts are equipped with counterweight guide rails 7, car guide rails 8, and lifting device guide rails 9. The counterweight 3, car 5, and lifting device 6 are respectively located on the counterweight guide rails 7, car guide rails 8, and lifting device guide rails 9.

[0027] Furthermore, there are two car guide rails 8, which are installed on the first vertical surface 10 in the two hoists. Each counterweight guide rail 7 is installed side by side on the second vertical surface 11, which is parallel to the first vertical surface 10. The center line of the drive wheel of each drive device 1 is located on the third vertical surface 12, which is parallel to the first vertical surface 10 and the second vertical surface 11 and is located between the first vertical surface and the second vertical surface.

[0028] Furthermore, each lifting device 6 includes four lifting devices, namely lifting device I, lifting device II, lifting device III, and lifting device IV. The four lifting devices are divided into two groups and arranged in two shafts respectively. Each lifting device is provided with a lifting device guide rail 9, which is arranged in the corresponding shaft.

[0029] Furthermore, the guide wheel assembly 2 includes a four-slot guide wheel I, a four-slot guide wheel II, a two-slot guide wheel I, a two-slot guide wheel II, a two-slot guide wheel III, and a two-slot guide wheel IV. The four two-slot guide wheels are arranged on the same layer, and the two four-slot guide wheels are arranged above the four two-slot guide wheels. Two-groove guide wheels I and two-groove guide wheels IV are respectively arranged above the outer sides of the two shafts, and two-groove guide wheels II and two-groove guide wheels III are respectively arranged above the inner sides of the two shafts; Lifting device I and lifting device II form one group arranged in the left shaft, while lifting device III and lifting device IV form another group arranged in the right shaft; One end of the traction rope 4 is connected to the counterweight 3 of the corresponding car, and the other end is divided into four strands after passing through the drive device 1. The first strand is directly connected to the lifting device I of the corresponding car. The second strand passes through the two-groove guide wheel I and the two-groove guide wheel II and is connected to the lifting device III of the corresponding car. The third and fourth strands pass through the four-groove guide wheel I and the four-groove guide wheel II of the corresponding car and then separate. The third strand is directly connected to the lifting device II of the corresponding car, and the fourth strand passes through the two-groove guide wheel III and the two-groove guide wheel IV of the corresponding car and is connected to the lifting device IV of the corresponding car.

[0030] Furthermore, the number of elevator cars is 4.

[0031] Furthermore, such as Figures 1 to 5As shown, this application discloses a traction system suitable for multi-shaft circulating operation, comprising a drive unit 1, a drive unit 1 for driving the elevator, a guide wheel assembly 2 for guiding, a counterweight 3 for balancing the weight of the car, a traction rope 4 connecting the counterweight 3 and the lifting device 6, a car 5, and a lifting device 6 connected to the car 5. The counterweight 3, car 5, and lifting device 6 run smoothly on the counterweight guide rail 7, car guide rail 8, and lifting device guide rail 9, respectively. Four sets of drive units 1 and guide wheel assemblies 2 are arranged at the top. The two ends of the traction rope 4 are directly or indirectly connected to the counterweight 3 and the lifting device 6, and the rope passes sequentially around the drive unit 1 and the guide wheel assembly 2.

[0032] The novel traction system in this embodiment 1 is equipped with four traction subsystems. Each subsystem consists of a car 5, a traction rope 4, a guide wheel assembly 2, a drive unit 1, a counterweight 3, and a lifting device 6. The four cars are arranged in two shafts. Each car 5 has its corresponding lifting device 6, traction rope 4, guide wheel assembly 2, drive unit 1, and counterweight 3. The four cars 5 operate independently, but all four cars 5 run on a shared car guide rail 8. Each car 5's corresponding lifting device 6 and counterweight 3 have their own lifting guide rail 9 and counterweight guide rail 7.

[0033] The center plane of the car guide rail 8 is located on the first vertical plane 10. The center planes of the four sets of counterweights 3 and counterweight guide rails 7 are located on the second vertical plane 11. The four sets of lifting devices 6 and lifting device guide rails 9 are evenly arranged on two vertical planes—the third vertical plane 12 and the fourth vertical plane 13. The third vertical plane 12 and the fourth vertical plane 13 are located on both sides of the first vertical plane 10, that is, the lifting devices 6 are installed on both sides of the car 5. When each car 5 is running, it is connected to the lifting devices 6, which are symmetrical about the center of the car 5, through the telescopic boom 14 installed on it, to ensure the stability of the car 5 during operation.

[0034] All drive units 1 and guide wheel assemblies 2 that the traction ropes 4 pass through are arranged on fixed bases 25. Through the staggered arrangement in space, the drive units 1 and guide wheel assemblies 2 are fixed in four layers and two columns respectively. The arrangement is relatively reasonable, which can avoid different traction ropes 4, reduce the design difficulty and cost of the load-bearing structure of the corresponding fixed bases 25, and ensure that there is enough operating and maintenance space at the top.

[0035] Another implementation example Figures 6 to 7The diagram shows an embodiment of one of the traction subsystems of the novel traction system of this application. It consists of a first car counterweight 15, a first car traction rope 16, a first car drive unit 17, a first car drive unit base 18, a first car guide wheel assembly including a first car four-slot guide wheel I 19, a first car four-slot guide wheel II 20, a first car two-slot guide wheel I 21, a first car two-slot guide wheel II 22, a first car two-slot guide wheel III 23, and a first car two-slot guide wheel IV 24, a fixed base 25, a first car lifting device including a first car lifting device I 26, a first car lifting device II 27, a first car lifting device III 30, and a first car lifting device IV 31, a first car 29, and two first car telescopic booms 28 arranged centrally symmetrically on the first car 29.

[0036] The first car counterweight 15 and the first car hoisting device provide traction for the first car traction rope 16. The first car traction rope 16, composed of multiple steel wire ropes, starts from the first car counterweight 15, passes through the first car drive device 17 in sequence, and then splits into four strands. The first strand is directly connected to the first car hoisting device I 26. The second strand passes through the first car two-slot guide wheel I 21 and the first car two-slot guide wheel II 22 and then connects to the first car hoisting device III 30. The third and fourth strands pass through the first car four-slot guide wheel I 19 and the first car four-slot guide wheel II 20 together and then separate. The third strand is directly connected to the first car hoisting device II 27, and the fourth strand passes through the first car two-slot guide wheel III 23 and the first car two-slot guide wheel IV 24 and then connects to the first car hoisting device IV, thus completing the traction.

[0037] The first car hoist I 26 and the first car hoist II 27 work together as a group, located in the left hoistway. They are connected to the first car 29 by two centrally symmetrical first car telescopic booms 28 installed on the first car 29, thereby completing the traction of the traction rope 4 to the first car 29.

[0038] The first car lifting device III 30 and the first car lifting device IV 31 form a group and are located in the right hoistway. Their relative hoistway positions are consistent with those of the first car lifting device I 26 and the first car lifting device II 27. Since all four lifting devices are pulled by the first car traction rope 16, the running speed of each lifting device of the first car 29 is consistent, that is, the height of each lifting device is consistent at any time.

[0039] Based on the technical features of the above embodiments, it can be understood that this novel traction system enables one drive unit and one set of traction ropes to act on two hoists, and as long as the relevant car-changing hoistway technology is used, a single car can circulate in multiple hoists; thus, multiple traction systems can be arranged in space without interfering with each other, which can meet the requirements of a traction system with multiple cars and multiple hoists operating in a circulatory manner.

[0040] The above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent changes made in accordance with the claims of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A traction system suitable for multi-shaft circulating operation, characterized in that, It includes multiple independently operating cars arranged in two adjacent hoists. Each car is equipped with a drive unit and a set of guide wheel assemblies located at the top of the hoistway, a counterweight located in the hoistway below the drive unit, a lifting device, and a set of traction ropes. Each lifting device includes multiple lifting devices, which are divided into two groups and arranged in the two hoists respectively. One end of the traction rope is connected to the counterweight, and the other end passes through the drive unit and the guide wheel assembly in sequence before being divided into multiple strands of traction ropes, which are respectively connected to the lifting devices of the corresponding cars in the two hoists. The lifting device is used to lift the cars. Each lifting device includes four lifting devices: lifting device I, lifting device II, lifting device III, and lifting device IV. The four lifting devices are divided into two groups and arranged in two shafts respectively. Each lifting device is equipped with a corresponding lifting device guide rail, which is arranged in the corresponding shaft. The guide wheel assembly includes a four-slot guide wheel I, a four-slot guide wheel II, a two-slot guide wheel I, a two-slot guide wheel II, a two-slot guide wheel III, and a two-slot guide wheel IV. The four two-slot guide wheels are arranged on the same layer, and the two four-slot guide wheels are arranged above the four two-slot guide wheels. Two-groove guide wheels I and two-groove guide wheels IV are respectively arranged above the outer sides of the two shafts, and two-groove guide wheels II and two-groove guide wheels III are respectively arranged above the inner sides of the two shafts; Lifting device I and lifting device II form a group arranged in the left shaft, while lifting device III and lifting device IV form another group arranged in the right shaft; One end of the traction rope is connected to the counterweight of the corresponding car, and the other end is divided into four strands after passing through the drive device. The first strand is directly connected to the lifting device I of the corresponding car. The second strand passes through the two-groove guide wheel I and the two-groove guide wheel II and is connected to the lifting device III of the corresponding car. The third and fourth strands pass through the four-groove guide wheel I and the four-groove guide wheel II of the corresponding car and then separate. The third strand is directly connected to the lifting device II of the corresponding car, and the fourth strand passes through the two-groove guide wheel III and the two-groove guide wheel IV of the corresponding car and is connected to the lifting device IV of the corresponding car. The two sets of lifting devices corresponding to the same car and distributed in the two hoists are always at the same horizontal height; The traction rope is directly connected to the lifting device via a rope end device installed on the lifting device; Both shafts are equipped with counterweight guide rails, car guide rails, and lifting device guide rails. The counterweight, car, and lifting device are respectively located on the counterweight guide rails, car guide rails, and lifting device guide rails. There are two car guide rails, which are installed on the first vertical plane in the two hoists. Each counterweight guide rail is installed side by side on the second vertical plane, which is parallel to the first vertical plane. The center line of the drive wheel of each drive device is located on the third vertical plane. The third vertical plane is parallel to the first and second vertical planes and is located between the first and second vertical planes. The number of elevator cars is 2 to 4; The multiple guide wheel assemblies corresponding to each car are arranged in a staggered manner in space; When there are 4 cars, the 4 guide wheel assemblies are arranged in pairs, and the 4 drive devices and 4 guide wheel assemblies are fixedly arranged in four layers and two columns. In the same column, 2 drive devices and 2 sets of guide wheel assemblies are arranged on both sides of a shaft.

2. The traction system suitable for multi-shaft circulating operation according to claim 1, characterized in that, Each car is equipped with a telescopic boom, and each car is connected to the corresponding lifting device through the telescopic boom.

3. The traction system suitable for multi-shaft circulating operation according to claim 1, characterized in that, The traction system suitable for multi-well circulation operation also includes a fixed base, which is set at the top of the well, and the drive device and guide wheel assembly are fixed on the fixed base.

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