Electromagnetic unbalance loading self-leveling suspension device

Abstract

The invention relates to an electromagnetic unbalance loading self-leveling suspension device, which adopts an electromagnetic balance device to realize non-contact guiding of a lift car, and obviously reduces friction and abrasion caused by traditional mechanical guiding, so that the service life of a guide rail and related parts is effectively prolonged, the operation noise is greatly reduced, and the riding comfort is improved. Meanwhile, the counterweight position can be accurately adjusted through the counterweight balancing device, static unbalance loading is effectively dealt with, and the initial balance state of elevator operation is guaranteed; more importantly, when the unbalance loading of the lift car exceeds the adjusting capacity of the counterweight balancing device, the electromagnetic balancing device can actively and rapidly adjust magnetic field parameters, and accurate compensation of dynamic unbalance loading is achieved, so that stable operation of the lift car can be maintained under various load conditions, and the stability and comfort of elevator operation are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of elevator equipment, in particular to an electromagnetic eccentric load self-leveling suspension device. Background Art

[0002] As an indispensable means of transportation in modern cities, the safety and comfort of elevators have always been the focus of people's attention. Traditional elevator systems mainly rely on mechanical components such as wire ropes, pulleys, guide rails and guide shoes to achieve the lifting and guiding of the car. This mechanical guidance method has inherent limitations. Specifically, due to the direct contact and sliding friction between mechanical parts, the parts are prone to wear and require regular maintenance and replacement, which not only increases maintenance costs and downtime, but also mechanical friction will generate noise, significantly affecting the passengers' riding comfort. In addition, traditional elevators often find it difficult to achieve accurate automatic leveling when faced with uneven distribution of passengers or cargo in the car. That is, when there is an overload in the car, it is easy to cause the car to tilt and run unsteadily.

[0003] To solve the above problems, for example, Chinese patent announcement number CN206842794U (announcement date: January 5, 2018, invention name: a self-balancing elevator car device) discloses a solution to achieve a self-balancing effect by adding a self-balancing frame, a weighing device and a balancing unit to the bottom of the car. However, in actual application, the balancing bracket structure of this solution is relatively complex, the balancing effect is not fine enough, and its car guidance still relies on mechanical contact guidance, which cannot avoid problems such as mechanical wear and noise. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an electromagnetic eccentric load self-leveling suspension device which realizes a smoother, more comfortable, safer and low-maintenance cost by non-contact electromagnetic guidance and active magnetic field adjustment and coordinated counterweight balance.

[0005] In order to achieve the above-mentioned purpose, the electromagnetic eccentric load self-leveling suspension device designed by the present invention is applied to an elevator car, comprising:

[0006] A guide rail is provided on the side wall of the elevator shaft and is vertically arranged along the running direction of the elevator car;

[0007] An electromagnetic balancing device, disposed on the car and opposite to the guide rail, for generating a magnetic field acting on the guide rail to guide the car in a non-contact manner;

[0008] A counterweight balancing device, provided in the car, for adjusting the position of the counterweight to balance the car according to a first eccentric load adjustment instruction;

[0009] Wherein, when the car eccentric load exceeds the predetermined balance value of the counterweight balancing device, the electromagnetic balancing device adjusts the magnetic field parameters according to the second eccentric load adjustment instruction to balance the car.

[0010] Preferably, the counterweight balancing device comprises two relatively arranged driving units, a guide member is connected between the two driving units, and a counterweight unit is slidably connected to the guide member; the driving unit is used to drive the counterweight unit to move to the target position according to the first eccentric load adjustment instruction.

[0011] Preferably, the driving unit is an electromagnetic coil.

[0012] Preferably, the guide member comprises:

[0013] A sliding rod, wherein the counterweight unit is provided with a sliding hole adapted to the sliding rod;

[0014] Or, a hollow conduit for accommodating the counterweight unit.

[0015] Preferably, the counterweight balancing device is provided in plurality, and the plurality of counterweight balancing devices are arranged along the width and length direction of the car, and are connected into a whole and installed on the top and / or bottom of the car.

[0016] Preferably, it further comprises a universal buffer support, wherein the universal buffer support is arranged between the car and the counterweight balancing device.

[0017] Preferably, the electromagnetic balancing device comprises a plurality of electromagnetic coils; the guide rail is made of permanent magnetic material or is provided with electromagnetic coils inside.

[0018] Preferably, it also includes:

[0019] An eccentric load detection device is provided in the car and is used to detect an eccentric load state of the car;

[0020] a controller, electrically connected to the eccentric load detection device, the electromagnetic balancing device and the counterweight balancing device, and configured to generate a first eccentric load adjustment instruction and a second eccentric load adjustment instruction according to a detection result of the eccentric load detection device;

[0021] When the car eccentric load detected by the eccentric load detection device exceeds the predetermined balance value of the counterweight balancing device, the controller generates the second eccentric load adjustment instruction to control the electromagnetic balancing device to adjust the magnetic field strength and / or magnetic field direction of the electromagnetic balancing device to balance the car.

[0022] Preferably, the eccentric load detection device comprises:

[0023] A pressure-sensitive sensing unit for detecting the load distribution on the car platform;

[0024] A weighing piezoelectric sensing unit, used for converting the pressure signal of the pressure-sensitive sensing unit into an electrical signal;

[0025] The horizontal detection unit is used to detect the tilt angle of the car.

[0026] Preferably, when the car inclination angle detected by the horizontal detection unit exceeds 3 degrees, the controller generates the first eccentric load adjustment instruction or the second eccentric load adjustment instruction.

[0027] The electromagnetic eccentric load self-leveling suspension device designed by the present invention realizes non-contact guidance of the car by adopting an electromagnetic balancing device, which significantly reduces the friction and wear caused by traditional mechanical guidance, thereby effectively extending the service life of the guide rails and related components, and greatly reducing the operating noise, and improving the riding comfort; at the same time, the counterweight balancing device can accurately adjust the counterweight position, effectively deal with static eccentric loads, and ensure the initial balance state of the elevator operation; more importantly, when the car eccentric load exceeds the adjustment capacity of the counterweight balancing device, the electromagnetic balancing device can actively and quickly adjust the magnetic field parameters to achieve accurate compensation for dynamic eccentric loads, so that the car can be maintained under various load conditions. The smooth operation and comfort of the elevator operation are significantly improved. In addition, the non-contact electromagnetic guidance reduces the wear of mechanical parts, reduces maintenance requirements and maintenance costs, and improves the reliability and economy of elevator operation; the counterweight balancing device and the electromagnetic balancing device working in coordination can more efficiently deal with various eccentric load conditions, improve the balancing efficiency and response speed of the entire system, and ultimately improve the overall operation performance of the elevator and the riding experience of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the electromagnetic eccentric load self-leveling suspension device provided in an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the structure of the counterweight balancing device provided in an embodiment of the present application.

[0030] Figure 3 It is a schematic structural diagram of a counterweight balancing device provided in another embodiment of the present application.

[0031] Figure 4 It is a schematic diagram of leveling of the electromagnetic eccentric load self-leveling suspension device provided in an embodiment of the present application.

[0032] Figure 5 It is a schematic diagram of leveling the counterweight balancing device provided in an embodiment of the present application.

[0033] Figure 6 It is a schematic diagram of leveling the electromagnetic balancing device provided in an embodiment of the present application.

[0034] Figure 7It is a structural block diagram of the eccentric load detection device provided in an embodiment of the present application.

[0035] Among them: car 100, guide rail 10, electromagnetic balancing device 20, counterweight balancing device 30, drive unit 31, guide member 32, slide rod 321, hollow conduit 322, counterweight unit 33, universal buffer support 40, eccentric load detection device 50, pressure sensitive sensor unit 51, weighing piezoelectric induction unit 52, level detection unit 53, controller 60, mounting base 70. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] The electromagnetic off-center load self-leveling suspension device provided in this embodiment is applied to the elevator car 100, aiming to solve the friction and wear caused by the traditional mechanical guide, as well as the off-center load problem caused by uneven load during operation, thereby improving the elevator operation stability and riding comfort.

[0038] like Figures 1 to 7 As shown, the electromagnetic eccentric load self-leveling suspension device comprises:

[0039] The guide rail 10 is arranged on the side wall of the elevator shaft and is vertically arranged along the running direction of the car 100, providing a solid foundation and a reliable guide track for the subsequent stable operation of the electromagnetic balancing device 20.

[0040] The electromagnetic balancing device 20 is provided on the car 100 and arranged opposite to the guide rail 10, and is used to guide the car 100 in a non-contact manner by generating a magnetic field that acts on the guide rail 10. In this embodiment, the electromagnetic balancing device 20 includes a plurality of electromagnetic coils, which are installed on the front, rear, left and right side walls of the car 100, and generate a magnetic field after being energized. The magnetic field interacts with the guide rail 10 arranged opposite thereto to form a non-contact supporting force between the car 100 and the guide rail 10, thereby realizing the suspension and non-contact guidance of the car 100, and effectively reducing the friction and wear caused by the traditional mechanical guidance.

[0041] The counterweight balancing device 30 is provided in the car 100 and is used to adjust the counterweight position according to the first overload adjustment instruction to balance the car 100; wherein, when the overload of the car 100 exceeds the predetermined balance value of the counterweight balancing device 30, the electromagnetic balancing device 20 adjusts the magnetic field parameters according to the second overload adjustment instruction to balance the car 100.

[0042] Specific work: Figure 4 , Figure 5 , Figure 6As shown, driven by the elevator traction system (not shown), the car 100 runs normally in the elevator shaft, and the electromagnetic balancing device 20 interacts with the guide rail 10 through magnetic force to achieve non-contact guidance of the car 100. At the same time, the counterweight balancing device 30 actively adjusts the position of the counterweight according to the load condition, so as to make the center of gravity of the car 100 coincide with the suspension center as much as possible, thereby maintaining the initial balance state of the car 100; when the degree of eccentric load of the car 100 is small and does not exceed the balance limit of the counterweight balancing device 30, the counterweight balancing device 30 can achieve balance by adjusting the position of the counterweight according to the first eccentric load adjustment instruction. The electromagnetic balancing device 20 mainly provides a non-contact guiding function; when the degree of eccentric loading of the car 100 exceeds the balance limit of the counterweight balancing device 30, for example, when passengers stand together in a corner of the car 100, resulting in excessive center of gravity displacement, the electromagnetic balancing device 20 will actively adjust the magnetic field parameters generated and acting on the guide rail 10 according to the second eccentric loading adjustment instruction, such as the current magnitude and / or direction of the electromagnetic coil in the electromagnetic balancing device 20, thereby generating additional balancing force to offset the remaining eccentric loading torque, and cooperate with the counterweight balancing device 30 to finally restore the car 100 to a balanced state and ensure the smooth operation of the elevator. The detailed generation process of the first eccentric loading adjustment instruction and the second eccentric loading adjustment instruction will be described in detail in subsequent embodiments.

[0043] In summary, through non-contact guidance and combined with the coordinated leveling of the counterweight balancing device 30 and the electromagnetic balancing device 20, the problems of mechanical wear, high noise and difficulty in automatic leveling of traditional elevators are effectively solved, thereby significantly improving the safety and comfort of elevator operation.

[0044] In some embodiments, Figure 4 As shown, the counterweight balancing device 30 includes two relatively arranged driving units 31, a guide member 32 is connected between the two driving units 31, and a counterweight unit 33 is slidably connected to the guide member 32; the driving unit 31 is used to drive the counterweight unit 33 to move to the target position according to the first eccentric load adjustment instruction.

[0045] In this embodiment, the driving unit 31 is an electromagnetic coil, which drives the counterweight unit 33 located on the guide member 32 to slide along the guide member 32 after receiving the first eccentric load adjustment instruction, so as to accurately adjust the position of the counterweight unit 33. Specifically, when the passenger standing positions in the elevator car 100 are unevenly distributed, resulting in eccentric load, the eccentric load detection device (not shown) can detect the eccentric load situation and generate a first eccentric load adjustment instruction to control the current size and / or direction of the electromagnetic coils of the two driving units 31, so as to drive the counterweight unit 33 to move along the guide member 32, and finally move the counterweight unit 33 to the target position determined by the controller, thereby effectively offsetting the eccentric load torque of the car 100 and restoring the car 100 to a balanced state. In this embodiment, the counterweight unit 33 can be a permanent magnet that can interact with the electromagnetic coil of the driving unit 31 to generate a magnetic field, or a counterweight block embedded with a permanent magnet.

[0046] In another embodiment, the driving unit 31 may also be a motor, and the guide member 32 may be a screw rod that drives the counterweight unit 33 to move. The counterweight unit 33 may be driven by the motor to move precisely on the screw rod, thereby achieving balance of the car 100.

[0047] In some embodiments, the guide member 32 includes:

[0048] The sliding rod 321, the counterweight unit 33 is provided with a sliding hole adapted to the sliding rod 321;

[0049] Or, the hollow conduit 322 is used to accommodate the counterweight unit 33.

[0050] In a specific embodiment, Figure 3 As shown, the guide member 32 is a slide bar 321, which is a smooth cylindrical rod body, and the counterweight unit 33 is a counterweight slider, which is provided with a sliding hole adapted to the slide bar 321, so that the counterweight slider can slide freely along the slide bar 321. This structure is simple and reliable, easy to implement, has low requirements on the shape of the counterweight unit 33, and the weight adjustment range of the counterweight unit 33 is wide, so it is more suitable for passenger elevators with large load requirements. In order to further improve the sliding performance, the material of the slide bar 321 can be a high-strength, low-friction alloy material, such as stainless steel or aluminum alloy, and the inner wall of the sliding hole can be coated with a low-friction material to reduce the resistance of the counterweight slider when sliding.

[0051] In another specific embodiment, Figure 2As shown, the guide member 32 is a hollow conduit 322, and the counterweight unit 33 is a plurality of cylindrical counterweight blocks, which can move freely inside the hollow conduit 322. This structure can effectively protect the counterweight unit 33 from external interference, and can significantly reduce the noise generated during the movement of the counterweight unit 33; in addition, the hollow conduit 322 adopts a closed structure, which has a good dust and dirt prevention effect, thereby effectively reducing the cost of regular maintenance, and is therefore more suitable for residential elevators with smaller load requirements. In order to further reduce the movement resistance of the counterweight unit, the hollow conduit 322 can be made of high-strength, low-friction engineering plastics or metal materials.

[0052] In some embodiments, Figure 1 , Figure 2 As shown, a plurality of counterweight balancing devices 30 are provided, and the plurality of counterweight balancing devices 30 are arranged along the width and length direction of the car 100, and are connected as a whole and installed on the top and / or bottom of the car 100. In this way, the plurality of counterweight balancing devices 30 are connected as a whole, and can be installed and disassembled as a complete module, thereby avoiding the tediousness and time-consuming of installing a plurality of independent counterweight balancing devices 30 separately, and only the whole assembly needs to be fixed on the top and / or bottom of the car 100, which will greatly simplify the installation and maintenance steps, and significantly reduce the installation time and maintenance costs.

[0053] In a specific embodiment, as 1, Figure 2 As shown in the figure, according to the size and shape of the car 100, the counterweight balancing device 30 can be configured into two specifications, one long and one short, wherein four long counterweight balancing devices 30 are respectively installed at the four side edges of the bottom of the car 100, and four short counterweight balancing devices 30 are installed in a cross layout between the four long counterweight balancing devices 30, and each counterweight balancing device 30 is connected as a whole through the mounting seat 70 of the driving unit 31. After receiving the first eccentric load adjustment instruction, the driving unit 31 controls the counterweight units 33 in the eight counterweight balancing devices 30 to move to the corresponding target position, thereby achieving eccentric load balancing of the car 100, that is, through the coordinated work of multiple counterweight balancing devices 30, the center of gravity of the car 100 can be adjusted more finely, thereby effectively offsetting the eccentric load torque of the car 100, so that the car 100 can be restored to a balanced state faster.

[0054] In some embodiments, Figure 6As shown, it also includes a universal buffer support 40, which is arranged between the car 100 and the counterweight balancing device 30. In this embodiment, the universal buffer support 40 adopts a ball joint structure, the ball head of the ball joint structure is connected to the bottom of the car 100, and the ball socket of the ball joint structure is connected to the mounting seat 70 of the counterweight balancing device 30, so that the ball head can rotate in the ball socket, thereby achieving multi-directional buffering and adjustment. In the actual installation process, the installer can loosen the adjustment bolt to adjust the angle of the universal buffer support 40, thereby changing the initial counterweight position of the counterweight balancing device 30. For example, the initial counterweight position of the four counterweight balancing devices 30 installed at the four corners of the bottom of the car 100 can be adjusted so that the car 100 is as horizontal as possible during the initial installation, thereby providing a good foundation for the subsequent self-leveling of the eccentric load.

[0055] In a specific embodiment, the counterweight balancing device 30 is installed at the bottom of the car 100 through a universal buffer support 40, and a spring is also provided on the universal buffer support 40 to serve as a buffer when the car squats.

[0056] In some embodiments, the guide rail 10 is made of permanent magnetic material or has an electromagnetic coil inside. Specifically, when the guide rail 10 is made of permanent magnetic material, it can provide a fixed and stable magnetic field without the need for additional power supply; and when an electromagnetic coil is set inside the guide rail 10, the strength and direction of the magnetic field can be flexibly adjusted by controlling the current of the electromagnetic coil. When working, whether it is made of permanent magnetic material or an electromagnetic coil is set, the magnetic poles of the magnetic field generated by the guide rail 10 will repel each other with the magnetic poles of the magnetic field generated by the electromagnetic balancing device 20, thereby jointly forming a stable suspension and guiding force to ensure the smooth operation of the car 100 on the guide rail 10.

[0057] In a specific embodiment, Figure 1 , Figure 5 , Figure 6 As shown, the electromagnetic balancing device 20 can use an electromagnetic suction cup, and sixteen electromagnetic suction cups are respectively set at the eight upper and lower corners of the car 100 to achieve uniform support for the car 100; the guide rail 10 and the electromagnetic balancing device 20 are set one by one, and are made of high-carbon steel material, which has good magnetic conductivity and can form a stable magnetic force between the electromagnetic suction cups. Figure 6 As shown, when the car 100 operates normally in the elevator shaft, the electromagnetic balancing devices 20, i.e., electromagnetic suction cups, located on the opposite sides of the car 100 will generate magnetic forces to attract the corresponding guide rails 10, thereby forming a non-contact guiding force between the car 100 and the guide rails 10, and making the car 100 stably suspended between the guide rails 10 on both sides of the car 100.

[0058] In some embodiments, Figure 1 , Figure 7As shown, as shown, also includes:

[0059] The eccentric load detection device 50 is provided in the car 100 and is used to detect the eccentric load state of the car 100;

[0060] The controller 60 is electrically connected to the eccentric load detection device 50, the electromagnetic balancing device 20 and the counterweight balancing device 30, and is used to generate a first eccentric load adjustment instruction and a second eccentric load adjustment instruction according to the detection result of the eccentric load detection device 50;

[0061] When the eccentric load of the car 100 detected by the eccentric load detection device 50 exceeds the predetermined balance value of the counterweight balancing device 30 , the controller 60 generates a second eccentric load adjustment instruction to control the electromagnetic balancing device 20 to adjust the magnetic field strength and / or magnetic field direction of the electromagnetic balancing device 20 to balance the car 100 .

[0062] In this embodiment, if Figure 4 As shown, the eccentric load detection device 50 comprises:

[0063] A pressure-sensitive sensing unit 51 for detecting the load distribution on the platform of the car 100;

[0064] The weighing piezoelectric sensing unit 52 is used to convert the pressure signal of the pressure-sensitive sensing unit 51 into an electrical signal;

[0065] The horizontal detection unit 53 is used to detect the tilt angle of the car 100 .

[0066] In specific implementation, the pressure-sensitive sensing unit 51 can adopt pressure-sensitive elements such as piezoresistors or pressure-sensitive films, which are evenly distributed at the bottom of the car 100, so as to be able to accurately sense the force conditions at each position in the car 100, thereby forming load distribution data; the weighing piezoelectric sensing unit 52 is electrically connected to the pressure-sensitive sensing unit 51, and can receive the pressure signal of the pressure-sensitive sensing unit 51, and convert the pressure signal into an electrical signal, thereby converting the weight information of the passenger or cargo into an electrical signal, and transmitting the electrical signal to the controller 60; the horizontal detection unit 53 is installed at the center of the top or bottom of the car 100, for example, a high-precision level can be used, so as to be able to detect the inclination angle of the car 100 in real time.

[0067] Specifically, when passengers or goods enter the car 100, the pressure-sensitive sensing unit 51 can detect the stress conditions at each position in the car 100 in real time, and convert the stress information into load distribution data. The weighing piezoelectric sensing unit 52 can receive the pressure signal of the pressure-sensitive sensing unit 51 in real time, convert the pressure signal into an electrical signal, and transmit the electrical signal to the controller 60 in real time. At the same time, the horizontal detection unit 53 can also detect the inclination angle of the car 100 in real time, and transmit the inclination angle data to the controller 60 in real time. Based on the above data, the controller 60 can calculate the overload condition of the car 100. When the calculated overload condition does not exceed the adjustment limit of the counterweight balancing device 30, as shown in FIG. Figure 5 As shown, the controller 60 will generate a first eccentric load adjustment instruction to control each counterweight unit 33 of the counterweight balancing device 30 so that its overall center of gravity moves in the diagonal direction of the eccentric load side, thereby performing eccentric load adjustment; conversely, when the calculated eccentric load exceeds the adjustment limit of the counterweight balancing device 30, the controller 60 will generate a second eccentric load adjustment instruction to actively control the electromagnetic balancing device 20 to perform eccentric load adjustment, such as Figure 6 As shown, for example, the electromagnetic suction cup located at the upper part of the side opposite to the side of the eccentric load is controlled to increase its magnetic force to increase the suction force on the corresponding side guide rail 10, thereby correcting the tilt of the car 100, that is, working in conjunction with the counterweight balancing device 30 to quickly restore the car 100 to a balanced state. In addition, during the operation of the car 100, the horizontal detection unit 53 will continuously detect the tilt angle of the car 100 and feed back the information to the controller 60. The controller 60 will dynamically adjust the position of the counterweight unit 33 and the magnetic force of the electromagnetic suction cup according to the feedback information to ensure that the platform of the car 100 always remains horizontal.

[0068] In some embodiments, Figure 6 As shown, when the tilt angle of the car 100 detected by the horizontal detection unit 53 exceeds 3 degrees, the controller 60 generates a first eccentric load adjustment instruction or a second eccentric load adjustment instruction.

[0069] In this embodiment, the controller 60 is preset with a tilt angle threshold, which is set to 3 degrees. That is, when the controller 60 receives the tilt angle α from the horizontal detection unit 53, it will compare the tilt angle α with the preset tilt angle threshold, that is, 3 degrees. If the tilt angle of the car 100 detected by the horizontal detection unit 53 is less than or equal to 3 degrees, it is considered that the car 100 is in normal operation. For example, passengers are walking in the car 100, and there is no need for leveling control to avoid frequent adjustments caused by slight disturbances. At this time, the controller 60 will not generate the first overload adjustment instruction and the second overload adjustment instruction; if the tilt angle of the car 100 detected by the horizontal detection unit 53 is greater than 3 degrees, it is considered that the car 100 has obvious overload and needs leveling control. At this time, the controller 60 will choose to generate the first overload adjustment instruction according to the degree of overload, control the counterweight balancing device 30 for coarse adjustment, or generate the second overload adjustment instruction, cooperate with the counterweight balancing device 30 and the electromagnetic balancing device 20, and perform fine overload adjustment to restore the car 100 to a horizontal state.

[0070] The electromagnetic eccentric load self-leveling suspension device provided in this embodiment realizes non-contact guidance of the car by adopting an electromagnetic balancing device, significantly reducing the friction and wear caused by traditional mechanical guidance, thereby effectively extending the service life of the guide rails and related components, and greatly reducing the operating noise, and improving the riding comfort; at the same time, the counterweight balancing device can accurately adjust the counterweight position, effectively deal with static eccentric loads, and ensure the initial balance state of the elevator operation; more importantly, when the car eccentric load exceeds the adjustment capacity of the counterweight balancing device, the electromagnetic balancing device can actively and quickly adjust the magnetic field parameters to achieve accurate compensation for dynamic eccentric loads, so that the car can be maintained under various load conditions. The smooth operation and comfort of the elevator operation are significantly improved. In addition, the non-contact electromagnetic guidance reduces the wear of mechanical parts, reduces maintenance requirements and maintenance costs, and improves the reliability and economy of elevator operation; the counterweight balancing device and the electromagnetic balancing device working in coordination can more efficiently deal with various eccentric load conditions, improve the balancing efficiency and response speed of the entire system, and ultimately improve the overall operation performance of the elevator and the riding experience of passengers.

[0071] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0072] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] Finally, it should be noted that the above are only 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electromagnetic eccentric load self-leveling suspension device, applied to an elevator car, characterized in that: include: A guide rail is provided on the side wall of the elevator shaft and is vertically arranged along the running direction of the elevator car; An electromagnetic balancing device, disposed on the car and opposite to the guide rail, for generating a magnetic field acting on the guide rail to guide the car in a non-contact manner; A counterweight balancing device, provided in the car, for adjusting the position of the counterweight to balance the car according to a first eccentric load adjustment instruction; Wherein, when the car eccentric load exceeds the predetermined balance value of the counterweight balancing device, the electromagnetic balancing device adjusts the magnetic field parameters according to the second eccentric load adjustment instruction to balance the car.

2. The electromagnetic eccentric load self-leveling suspension device according to claim 1 is characterized in that: The counterweight balancing device includes two driving units arranged opposite to each other, a guide member is connected between the two driving units, and a counterweight unit is slidably connected to the guide member; the driving unit is used to drive the counterweight unit to move to a target position according to a first eccentric load adjustment instruction.

3. The electromagnetic eccentric load self-leveling suspension device according to claim 2 is characterized in that: The driving unit is an electromagnetic coil.

4. The electromagnetic eccentric load self-leveling suspension device according to claim 2 is characterized in that: The guide member comprises: A sliding rod, wherein the counterweight unit is provided with a sliding hole adapted to the sliding rod; Or, a hollow conduit for accommodating the counterweight unit.

5. The electromagnetic eccentric load self-leveling suspension device according to any one of claims 1 to 4, characterized in that: The counterweight balancing device is provided in plurality, and the plurality of counterweight balancing devices are arranged along the width and length direction of the car, and are connected into a whole and installed on the top and / or bottom of the car.

6. The electromagnetic eccentric load self-leveling suspension device according to claim 5, characterized in that: It also includes a universal buffer support, which is arranged between the car and the counterweight balancing device.

7. The electromagnetic eccentric load self-leveling suspension device according to claim 1, characterized in that: The electromagnetic balancing device comprises a plurality of electromagnetic coils; the guide rail is made of permanent magnetic material or is provided with electromagnetic coils inside.

8. The electromagnetic eccentric load self-leveling suspension device according to claim 1, characterized in that: Also includes: An eccentric load detection device is provided in the car and is used to detect an eccentric load state of the car; a controller, electrically connected to the eccentric load detection device, the electromagnetic balancing device and the counterweight balancing device, and configured to generate a first eccentric load adjustment instruction and a second eccentric load adjustment instruction according to a detection result of the eccentric load detection device; When the car eccentric load detected by the eccentric load detection device exceeds the predetermined balance value of the counterweight balancing device, the controller generates the second eccentric load adjustment instruction to control the electromagnetic balancing device to adjust the magnetic field strength and / or magnetic field direction of the electromagnetic balancing device to balance the car.

9. The electromagnetic eccentric load self-leveling suspension device according to claim 8, characterized in that: The eccentric load detection device comprises: A pressure-sensitive sensing unit for detecting the load distribution on the car platform; A weighing piezoelectric sensing unit, used for converting the pressure signal of the pressure-sensitive sensing unit into an electrical signal; The horizontal detection unit is used to detect the tilt angle of the car.

10. The electromagnetic eccentric load self-leveling suspension device according to claim 9, characterized in that: When the car inclination angle detected by the horizontal detection unit exceeds 3 degrees, the controller generates the first eccentric load adjustment instruction or the second eccentric load adjustment instruction.

Images