Energy-saving elevator device using magnetic attraction characteristics

Abstract

The application provides an energy-saving elevator device using magnetic attraction characteristics, and relates to the technical field of elevator equipment, which comprises a car, a counterweight and a traction rope, and further comprises ferromagnetic plates fixed on the inner walls of the sliding well of the counterweight; the counterweight comprises a support, and a magnet component is slidably arranged on the inner sides of the support; the magnet component is provided with a magnet which is used in correspondence with the ferromagnetic plates; a driving component is arranged in the support and connected with the magnet component, and is used for driving the magnet component to move close to or away from the ferromagnetic plates. The application has the advantages that the counterweight is used to replace the traditional counterweight block, and the weight of the counterweight changes according to the weight of the car, so that the weight of the car and the counterweight always remains equal or close to equal, the working power of the traction motor is reduced, the energy-saving and environmental protection effects are achieved, and the risk of imbalance caused by the large difference between the weight of the counterweight and the weight of the car is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of elevator equipment technology, and in particular to an energy-saving elevator device that utilizes magnetic attraction properties. Background Technology

[0002] With the improvement of living environment and the increase in urban population density, elevators have become one of the essential supporting facilities in urban communities. Enclosed elevators occupy little space and are very convenient and safe for carrying goods or people, so they have become the first choice for high-rise building elevator installation. The structure of an enclosed elevator generally includes a car and a counterweight car. The car and the counterweight car are connected by traction ropes, and the traction motor drives the traction ropes to achieve the lifting and lowering of the car.

[0003] The counterweight is a component of the elevator traction system, and its function is to balance the weight of the car. Located on the other side of the car, it is connected to the top of the car via traction steel cables. The counterweight plays an energy-saving role in the elevator traction system because theoretical calculations optimize the elevator load before the counterweight is added. Generally, the weight of the counterweight is approximately equal to the car's own weight plus half of the elevator's rated load. The elevator counterweight is also called the weight balancing system. The main function of this system is to relatively balance the weight of the car. During elevator operation, it keeps the weight difference between the car and the counterweight within a limit, ensuring smooth elevator operation as much as possible.

[0004] Currently, there are already many publicly disclosed patents related to enclosed elevators. Chinese Patent Announcement No. CN208916559U discloses a type of elevator, the disclosed technical content of which is: a car is installed in the elevator shaft, a counterweight is installed in the sliding shaft of the balancing component, a traction motor is installed above the elevator shaft, the traction motor is connected to the upper end of the car and the counterweight respectively through traction ropes, and the lower end of the counterweight and the car are connected to the lower end of the car respectively through transmission chains; a tension sensor is installed on the top of the car, and the traction rope is connected to the tension sensor.

[0005] However, the aforementioned elevator patent has a drawback: the weight of the counterweight is fixed. Since the weight of the car varies depending on whether it is empty or carrying passengers, the weight difference between the counterweight and the car also changes. When the weight difference is large, the driving force of the traction motor on the traction rope is greater, leading not only to increased energy consumption but also increasing the risk of overshooting or falling. Therefore, it is necessary to develop an elevator to overcome these drawbacks. Summary of the Invention

[0006] This invention overcomes the shortcomings of the prior art and provides an energy-saving elevator device that utilizes magnetic attraction properties to overcome the aforementioned technical problems.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] An energy-saving elevator device utilizing magnetic attraction properties includes a car, a counterweight, and a traction rope. The car is slidably connected to the car shaft, the counterweight is slidably connected to the counterweight sliding shaft, one end of the traction rope is connected to the car, and the other end of the traction rope is connected to the counterweight.

[0009] It also includes ferromagnetic plates fixed on both sides of the inner wall of the balance component sliding well. The ferromagnetic plates on both sides extend along the height direction of the balance component sliding well and are arranged opposite to each other.

[0010] The balancing component includes a support frame, and magnetic components are slidably arranged on both sides of the inside of the support frame. The magnetic components include magnets, which are used in conjunction with the position of the ferromagnetic plate.

[0011] The bracket contains a drive component, which is connected to the magnet component and is used to drive the magnet component to move closer to or away from the ferromagnetic plate.

[0012] Furthermore, the driving component includes a motor, a worm gear mechanism, and a lead screw; the motor is connected to the input end of the worm gear mechanism, and the output end of the worm gear mechanism is connected to the lead screw; the magnet component is provided with a lead screw nut, and the lead screw and lead screw nut are used in a matching connection.

[0013] Furthermore, the motor is located at the center of the two magnet components, and the threads of the lead screws connected to both ends of the worm gear mechanism are opposite.

[0014] Furthermore, the bracket is provided with a guide rail, and the magnetic component is slidably connected to the guide rail.

[0015] Furthermore, the side of the magnet facing the ferromagnetic plate is arranged parallel to the ferromagnetic plate.

[0016] Furthermore, a spring connects the two magnet components.

[0017] Furthermore, a weight sensor is installed at the bottom of the car, and the weight sensor is connected to the drive components via a signal connection.

[0018] Furthermore, the lead screw nut is sleeved in the magnet component; the lead screw nut has a through hole in the transverse direction, and the magnet component has a connecting hole, with the through hole and the connecting hole corresponding in position; the end hole of the spring extends to the corresponding position of the through hole and the connecting hole; it also includes a sliding pin, which passes through the connecting hole, the end hole of the spring, and the through hole, thereby fixing the magnet component, the lead screw nut, and the end of the spring.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The system includes a car and a balancing mechanism. A magnetic plate is positioned along the height of the balancing mechanism's sliding shaft. A drive unit within the support frame controls the movement of magnetic components on both sides towards or away from the magnetic plate. When someone enters the car, the overall weight of the car increases. At this time, the drive unit controls the magnetic components on both sides to move away from the magnetic plate (i.e., the magnetic components on both sides move towards the center), increasing the distance between them and the magnetic plate. This reduces the attraction of the magnetic components to the magnetic plate, causing their own weight to drop downwards, making the weight of the balancing mechanism and the car side roughly equal. When someone exits the car, the weight of the car decreases. At this time, the drive unit controls the magnetic components on both sides to move towards the magnetic plate (i.e., the magnetic components on both sides move away from each other), reducing the distance between them and the magnetic plate. This increases the attraction of the magnetic components to the magnetic plate, reducing the downward force of their own weight. In actual research and development… Through repeated testing and adjustments, the magnetic components on both sides are adjusted to their closest possible positions, at which point the attraction to the ferromagnetic plate is minimal, and the weight of the balancer is approximately the total weight of the car when fully loaded. Conversely, when the magnetic components are adjusted to their furthest possible positions, the attraction to the ferromagnetic plate is maximal, and the weight of the balancer is approximately the total weight of the car when unloaded. This ensures that the balancer and the car always maintain approximately the same weight regardless of the number of passengers, operating on a balance principle. By using a balancer instead of a traditional counterweight, and with the balancer's weight varying according to the car's weight, the weights of the two components remain equal or nearly equal. This structure reduces the traction motor's operating power, achieving energy conservation and environmental protection. It also significantly reduces the risk of imbalance and sudden falls or overshoots caused by a large difference in weight between the balancer and the car. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and are used together with the embodiments of the invention to explain the invention. They do not constitute a limitation of the invention. In the drawings:

[0022] Figure 1 This is a general schematic diagram of the elevator system;

[0023] Figure 2 This is a schematic diagram showing the ferromagnetic plate separating from the sliding well of the balancing component;

[0024] Figure 3 A 3D view of the balancing component;

[0025] Figure 4 Front view of the balancing component Figure 1 At this time, the magnetic components on both sides and the magnet are close to the ferromagnetic plate;

[0026] Figure 5 Front view of the balancing component Figure 2 At this time, the magnetic components on both sides and the magnet are far away from the ferromagnetic plate;

[0027] Figure 6 This is a schematic diagram of another embodiment of the magnet component and the lead screw nut;

[0028] Figure 7 yes Figure 6 Exploded view.

[0029] In the picture:

[0030] 1. Car; 101. Car floor; 2. Balancing component; 201. Bracket; 202. Magnetic component; 2021. Connecting hole; 203. Magnet; 204. Guide rail; 3. Traction rope; 4. Ferromagnetic plate; 5. Motor; 6. Worm gear mechanism; 7. Lead screw; 8. Lead screw nut; 801. Through hole; 9. Spring; 10. Sliding pin;

[0031] A. Car shaft; B. Balance component sliding shaft. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] like Figures 1 to 5 As shown, an energy-saving elevator device utilizing magnetic attraction includes a car 1, a balancer 2, and a traction rope 3. The car 1 is slidably connected to the car shaft A, and the balancer 2 is slidably connected to the balancer sliding shaft B. One end of the traction rope 3 is connected to the car 1, and the other end of the traction rope 3 is connected to the balancer 2. A traction motor is also provided to pull the traction rope 3 to control the lifting and lowering of the car 1 and the balancer 2.

[0034] It also includes ferromagnetic plates 4 fixed on both sides of the inner wall of the sliding well B of the balancer. The ferromagnetic plates 4 on both sides extend along the height direction of the sliding well B of the balancer and are arranged opposite to each other.

[0035] In the actual structure, guide members are provided on both sides of the balance member 2, and guide rails are provided on both sides of the inner wall of the balance member sliding well B. The guide members are slidably connected to the guide rails, which helps the balance member 2 to slide smoothly up and down along the balance member sliding well B. In this structure, the ferromagnetic plate 4 is provided on the side adjacent to the guide rail. That is, if the guide rail is provided on opposite sides in the balance member sliding well B, then the ferromagnetic plate 4 is provided on the other opposite sides in the balance member sliding well 102. The guide rail and the ferromagnetic plate 4 do not affect each other's use.

[0036] The balancing component 2 includes a support 201, and magnetic components 202 are slidably arranged on both sides of the inside of the support 201. The magnetic components 202 include magnets 203, which are used in conjunction with the position of the ferromagnetic plate 4. The advantage of this invention is that by controlling the distance between the magnets 203 and the ferromagnetic plate 4, the attraction force of the magnets 203 on the ferromagnetic plate 4 is adjusted, so that the weight of the balancing component 2 can change according to the number of passengers in the car 1 (or according to the total weight of the car 1 and the passengers). Ultimately, the weight of the balancing component 2 is made close to or equal to the total weight of the car 1 and the passengers, that is, the weight on both sides is made close to the same, so that the traction motor can output a lower power to drive the traction rope 3 to move, thereby driving the car 1 and the balancing component 2 to rise and fall.

[0037] A drive component is provided inside the bracket 201. The drive component is connected to the magnet component 202 and is used to drive the magnet component 202 to move closer to or away from the ferromagnetic plate 4.

[0038] In one embodiment of the driving component, the driving component includes a motor 5, a worm gear mechanism 6, and a lead screw 7. The motor 5 is connected to the input end of the worm gear mechanism 6, and the output end of the worm gear mechanism is connected to the lead screw 7. The worm gear mechanism includes a meshing worm wheel and a worm, with the worm serving as the input end and the worm wheel as the output end. The lead screw 7 is connected to the worm wheel. Therefore, when the motor 5 starts, it drives the worm to rotate to input power, which ultimately causes the worm wheel to drive the lead screw 7 to rotate. The magnet component 202 is provided with a lead screw nut 8, and the lead screw 7 and the lead screw nut 8 are used in conjunction. The lead screw 7 and the lead screw nut 8 form a lead screw module. As can be seen from the working principle of the lead screw module, the forward and reverse rotation of the lead screw 7, through its interaction with the lead screw nut 8, ultimately drives the magnet component 202 to move left and right.

[0039] In this embodiment, only one motor 5 is needed to simultaneously drive the magnetic components 202 on both sides to move synchronously. Specifically, the motor 5 is positioned at the center of the magnetic components 202 on both sides, and the threads of the lead screws 7 connected to both ends of the worm gear mechanism are opposite. That is, lead screws with opposite thread directions at both ends are manufactured, and the middle part of the lead screw is fixed by being fitted into the worm gear. When the lead screw rotates in one direction, since the threads at both ends are opposite, the magnetic components 202 on both sides will move in the same direction or in opposite directions.

[0040] As another improved structure, the drive component may not employ the worm gear mechanism 6, but instead use two independent motors 5, each motor 5 individually driving the movement of its corresponding magnetic component 202. The motors 5 are directly connected to the lead screw 7, and the movement of the magnetic component 202 is controlled by directly controlling the rotation of the lead screw 7. Alternatively, the drive component may use two independent pneumatic or hydraulic cylinders, each cylinder individually driving the movement of its corresponding magnetic component 202, using pneumatic or hydraulic pressure. Both of these improved structures, or other structures controlling the movement of the magnetic component 202, fall within the protection scope of the drive component and will not be elaborated upon here.

[0041] The bracket 201 is provided with a guide rail 204, and the magnet component 202 is slidably connected to the guide rail 204. The guide rail 204 helps to improve the smoothness of the left and right movement of the magnet component 202.

[0042] Combination Figures 2 to 5 It can be seen that the side of magnet 203 facing ferromagnetic plate 4 is set parallel to ferromagnetic plate 4, which makes the attraction force of magnet 203 on ferromagnetic plate 4 more uniform.

[0043] In addition, a spring 9 is connected between the two magnet components 202. The spring 9 has a pulling force on the magnet components 202 on both sides. The purpose of the spring 9 is that when the magnet component 202 is close to the ferromagnetic plate 4, the attraction between the magnet component 202 and the ferromagnetic plate 4 is extremely large. Therefore, in this embodiment, by setting the spring 9, a certain pulling force can be applied to the magnet component 202. As the magnet component 202 gets closer to the ferromagnetic plate 4, the spring 9 is pulled tighter and the elastic force is greater. This can reduce the output power of the motor 5 driving the magnet component 202 to move back and reduce the workload of the motor 5.

[0044] like Figure 6 as well as Figure 7 ( Figure 6 , Figure 7 The diagram shown is only a partial view of the magnet component 202 and is a structural diagram of another embodiment of the magnet component 202 and the lead screw nut 8. In this structure, the lead screw nut 8 is sleeved in the magnet component 202; the lead screw nut 8 has a through hole 801 arranged laterally, and the magnet component 202 has a connecting hole 2021, with the through hole 801 and the connecting hole 2021 corresponding in position; the end hole of the spring 9 extends to the corresponding position of the through hole 801 and the connecting hole 2021; it also includes a sliding pin 10, which passes through the connecting hole 2021, the end hole of the spring 9, and the through hole 801, thereby fixing the magnet component 202, the lead screw nut 8, and the end of the spring 9; a magnetic attractor is also provided on the magnet component 202 for pulling out the sliding pin 10.

[0045] In this structure, during normal operation, the lead screw nut 8 and the magnetic component 202 are fixed together, and the lead screw 7 is used in conjunction with the lead screw nut 8 to drive the left and right movement of the magnetic component 202. When the balancer or the car becomes unbalanced and experiences a sudden drop or overshoot, the magnetic actuator pulls out the sliding pin 10. At this time, the magnetic component 202, the lead screw nut 8, and the spring 9 are released from their lock. The spring 9 no longer exerts tension on the magnetic component 202, and the magnetic component 202 will separate from the lead screw nut 8 due to magnetic attraction and quickly move towards the ferromagnetic plate 4 on the same side. This maximizes the attraction between the magnetic component 202 and the ferromagnetic plate 4, effectively slowing down or even stopping the sudden drop or overshoot of the balancer and the car. This function is similar to that of the safety clamp in a traditional elevator, ensuring high safety. Furthermore, in this design, the braking method between the magnetic component 202 and the ferromagnetic plate 4 is non-contact, eliminating hard friction and preventing wear or damage to components. This design allows for reuse and a long service life.

[0046] As another improvement, a weight sensor is installed on the bottom 101 of the car 1. The weight sensor is connected to the drive component via a controller or processor. A program can be set in the controller or processor to calculate the relationship between the weight value collected by the weight sensor and the attraction force of the magnet 203 on the ferromagnetic plate 4. When a person enters the car 1 and stands on the bottom 101, the weight sensor will sense and know the weight value and transmit the weight value to the controller or processor. The controller or processor will transmit a signal to the motor 5 of the drive component, causing the motor 5 to move. Finally, the distance between the magnet component 202 and the ferromagnetic plate 4 is adjusted so that the attraction force of the magnet component 202 on the ferromagnetic plate 4 is controlled according to different weight values ​​collected by the weight sensor, so that the weight of the balance component 2 and the two sides of the car 1 are approximately the same.

[0047] Based on the attached diagram, when someone enters car 1, the overall weight of car 1 increases, such as... Figure 5 As shown, at this time, the drive component controls the magnetic components 202 on both sides to move away from the ferromagnetic plate 4 (that is, the magnetic components 202 on both sides move closer to the middle), increasing the distance between them and the ferromagnetic plate 4. This reduces the attraction of the magnetic components 202 to the ferromagnetic plate 4, causing the weight of the magnetic components 202 themselves to fall downwards (that is, the total weight of the balance component 2 mainly falls downwards), making the weight of the balance component 2 and the car 1 side basically equal. When a person gets out of the car 1, the weight of the car 1 decreases, such as... Figure 4 As shown, at this time, the driving component controls the magnet components 202 on both sides to move closer to the ferromagnetic plate 4 (that is, the magnet components 202 on both sides move in opposite directions), reducing the distance between them and the ferromagnetic plate 4, thereby increasing the attraction of the magnet components 202 to the ferromagnetic plate 4, and reducing the downward force of the magnet components 202 themselves.

[0048] The technical solution of the present invention adjusts the weight of the balance component 2 to make it nearly equal to the weight of the car 1, which not only reduces the working power of the traction motor, but also greatly reduces the risk of the car 1 falling or crashing.

[0049] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy-saving elevator device utilizing magnetic attraction properties, characterized in that: Includes a car (1), a balancer (2) and a traction rope (3). The car (1) is slidably connected to the car shaft (A) and the balancer (2) is slidably connected to the balancer sliding shaft (B). One end of the traction rope (3) is connected to the car (1) and the other end of the traction rope (3) is connected to the balancer (2). It also includes ferromagnetic plates (4) fixed on both sides of the inner wall of the balance component sliding well (B), the ferromagnetic plates (4) on both sides extending along the height direction of the balance component sliding well (B) and being arranged opposite to each other; The balancing component (2) includes a bracket (201), and magnetic components (202) are slidably arranged on both sides inside the bracket (201). The magnetic components (202) include magnets (203), which are used in conjunction with the position of the ferromagnetic plate (4). A drive component is provided inside the bracket (201), and the drive component is connected to the magnet component (202) to drive the magnet component (202) to move closer to or away from the ferromagnetic plate (4).

2. The energy-saving elevator device utilizing magnetic attraction properties according to claim 1, characterized in that: The driving components include a motor (5), a worm gear mechanism (6), and a lead screw (7); the motor (5) is connected to the input end of the worm gear mechanism (6), and the output end of the worm gear mechanism (6) is connected to the lead screw (7); the magnet component (202) is provided with a lead screw nut (8), and the lead screw (7) and the lead screw nut (8) are used in a matching connection.

3. An energy-saving elevator device utilizing magnetic attraction properties according to claim 2, characterized in that: The motor (5) is located at the center of the two magnet components (202), and the threads of the lead screws (7) connected to both ends of the worm gear mechanism (6) are opposite.

4. An energy-saving elevator device utilizing magnetic attraction properties according to any one of claims 1 to 3, characterized in that: The bracket (201) is provided with a guide rail (204), and the magnet component (202) is slidably connected to the guide rail (204).

5. An energy-saving elevator device utilizing magnetic attraction properties according to claim 1, characterized in that: The side of the magnet (203) facing the ferromagnetic plate (4) is arranged parallel to the ferromagnetic plate (4).

6. An energy-saving elevator device utilizing magnetic attraction properties according to claim 1, characterized in that: A spring (9) is connected between the two magnet components (202).

7. An energy-saving elevator device utilizing magnetic attraction properties according to claim 1, characterized in that: A weight sensor is provided on the bottom (101) of the car (1), and the weight sensor is connected to the drive component.

8. An energy-saving elevator device utilizing magnetic attraction properties according to claim 2, characterized in that: The lead screw nut (8) is sleeved in the magnet component (202); the lead screw nut (8) is provided with a through hole (801) in the transverse direction, and the magnet component (202) is provided with a connecting hole (2021), the through hole (801) and the connecting hole (2021) are positioned correspondingly; the end hole of the spring (9) extends to the corresponding position of the through hole (801) and the connecting hole (2021); it also includes a sliding pin (10), which passes through the connecting hole (2021), the end hole of the spring (9) and the through hole (801), thereby fixing the magnet component (202), the lead screw nut (8) and the end of the spring (9).

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