Elevator buffer device and elevator thereof
Through the elevator buffer device of electromagnetic repulsion and suction conversion, the problem of poor reliability and responsiveness of traditional elevator buffers is solved, and a high-reliability and fast-responsive elevator buffering effect is achieved without the risk of mechanical fatigue and hydraulic leakage.
Patent Information
- Application Number
- CN202422640051.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Traditional elevator buffers have problems with poor reliability and responsiveness, such as springs are prone to fatigue and hydraulic systems may leak.
The electromagnetic repulsion and suction force are converted by the method of buffering. The electromagnetic repulsion and suction force are converted by the reverse control of the magnetic poles of the first and second electromagnetic groups, and the magnetic force is used for buffering.
It improves the reliability and response speed of the buffer device, reduces the fall distance and impact force of the elevator, and has no risk of mechanical fatigue and hydraulic leakage, and is environmentally friendly and pollution-free.
Smart Images
Figure CN223225587U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of elevator buffering, and in particular to an elevator buffering device and an elevator thereof. Background Art
[0002] An elevator is a vertical transportation vehicle that moves up and down within a hoistway. Guide rails are typically installed within the hoistway, and guide shoes are installed on the elevator car. The guide rails guide the guide shoes, which in turn guide the elevator car. In the event of an elevator accident, the car is prone to falling, requiring a buffer device to mitigate the impact.
[0003] Traditional elevator buffers mainly use springs, hydraulics and other methods to mitigate the impact of elevators in unexpected situations. However, these methods have some limitations, such as spring fatigue and possible leakage of hydraulic systems, and have poor reliability and responsiveness. Utility Model Content
[0004] Based on this, it is necessary to provide an elevator buffer device and an elevator thereof with high reliability and fast response.
[0005] An elevator buffer device, comprising:
[0006] A first buffer component includes a guide shoe and a first electromagnetic group arranged in the guide shoe;
[0007] a second buffer component, comprising a guide rail and a second electromagnetic group disposed within the guide rail, wherein the guide shoe is capable of moving up and down relative to the guide rail in a height direction, and wherein the second electromagnetic group is configured to generate an electromagnetic repulsive force or an electromagnetic attractive force toward the first electromagnetic group to prevent the guide shoe from moving;
[0008] A control component is provided, wherein the first electromagnetic group / the second electromagnetic group are electrically connected to the control component; when the first electromagnetic group passes through the second electromagnetic group, the control component controls the first electromagnetic group / the second electromagnetic group to reverse the magnetic poles, so as to convert the electromagnetic repulsion between the first electromagnetic group and the second electromagnetic group into an electromagnetic attraction or convert the electromagnetic attraction between the first electromagnetic group and the second electromagnetic group into an electromagnetic repulsion.
[0009] In one embodiment, the second electromagnetic group includes a plurality of magnetic blocks, the plurality of magnetic blocks are spaced apart vertically along the height direction of the guide rail and adjacent magnetic poles are opposite;
[0010] When the first electromagnetic group passes through the plurality of magnetic blocks in sequence, the control component controls the first electromagnetic group to reverse its magnetic poles in sequence, or the control component controls the plurality of magnetic blocks in the second electromagnetic group to reverse their magnetic poles after the first electromagnetic group passes through.
[0011] In one embodiment, the first electromagnetic group includes a plurality of electromagnetic blocks, and the plurality of electromagnetic blocks are spaced apart and arranged vertically along the height direction of the guide rail and have opposite magnetic poles;
[0012] When the multiple electromagnetic blocks in the first electromagnetic group pass through the second electromagnetic group in sequence, the control component controls the second electromagnetic group in sequence to reverse the magnetic poles, or the control component controls the multiple electromagnetic blocks in the first electromagnetic group to reverse the magnetic poles after passing through the second electromagnetic group.
[0013] In one embodiment, the second electromagnetic group includes a plurality of magnetic blocks, which are arranged in an upper and lower intervals along the height direction of the guide rail and have opposite magnetic poles; the first electromagnetic group includes a plurality of electromagnetic blocks, which are arranged in an upper and lower intervals along the height direction of the guide rail and have opposite magnetic poles.
[0014] In one embodiment, in an initial state, the magnetic pole of the bottommost electromagnetic block among the plurality of electromagnetic blocks close to the second electromagnetic group is consistent with the magnetic pole of the topmost magnetic block among the plurality of magnetic blocks close to the first electromagnetic group.
[0015] In one embodiment, the guide shoe includes a back plate and a shell, the shell is arranged on the back plate and is formed with a groove that cooperates with the guide rail; the first electromagnetic group is set as two groups, and the two groups of the first electromagnetic groups are both arranged in the shell and are arranged on both sides of the groove.
[0016] In one embodiment, the control component includes a magnetic field sensor and a controller, the magnetic field sensor is arranged at the end of the groove away from the guide rail; the controller is arranged in the shell and is located between the two groups of the first electromagnetic groups, and is arranged corresponding to the magnetic field sensor.
[0017] In one embodiment, the back plate is provided with a connection hole for connecting to the car, and the connection holes are provided in plurality and are respectively provided on both sides of the shell.
[0018] In one embodiment, one end of the guide rail is arranged at the bottom pit of the elevator shaft, and the guide rail includes a guide rail back plate and a guide rail shell arranged on the guide rail back plate; the guide rail shell is a hollow structure, and the second electromagnetic group is arranged in the guide rail shell.
[0019] An elevator comprises the elevator buffer device described in any one of the above embodiments.
[0020] Compared with the prior art, the elevator buffer device has the following advantages:
[0021] (1) Buffering is achieved by magnetic repulsion, which eliminates problems such as mechanical fatigue and leakage and has higher reliability and stability. After the first electromagnetic group passes the second electromagnetic group, the control component can control the first electromagnetic group / the second electromagnetic group to reverse the magnetic poles, so that the electromagnetic repulsion between the two is converted into electromagnetic attraction. Therefore, when the first electromagnetic group continues to fall after passing the second electromagnetic group, the attraction generated between the two can further slow down the downward movement speed of the car, and the buffering effect is good.
[0022] (2) When the elevator falls unexpectedly, the two electromagnetic groups can immediately generate repulsion when they are close to each other. The response speed is very fast and can effectively reduce the distance and impact force of the elevator falling.
[0023] (3) By adjusting the size, quantity and layout of the two electromagnetic groups, the performance of the buffer can be flexibly adjusted to meet different needs according to different elevator models and usage environments.
[0024] (4) Magnetic repulsion buffering does not require the use of harmful substances such as hydraulic oil, will not cause pollution to the environment, and has the advantages of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] Figure 1 This is a schematic diagram of the structure of the elevator buffer device provided in this application.
[0027] Figure 2 This is a schematic structural diagram of the first buffer component provided in this application.
[0028] Figure 3 For this application Figure 2 Schematic diagram of the rear view.
[0029] Figure 4 For this application Figure 2 Schematic front view of .
[0030] Figure 5 This is a schematic structural diagram of the second buffer component provided in this application.
[0031] Figure 6 This is a schematic front view of the second buffer component provided in this application.
[0032] Figure 7 This is a schematic rear view of the second buffer component provided in this application.
[0033] Figure 8 This is a schematic diagram of the cooperation between the first electromagnetic group and the second electromagnetic group when the car moves downward in this application Figure 1 .
[0034] Figure 9 This is a schematic diagram of the cooperation between the first electromagnetic group and the second electromagnetic group when the car moves downward in this application Figure 2 .
[0035] Figure 10 This is a schematic diagram of the cooperation between the first electromagnetic group and the second electromagnetic group when the car moves downward in this application Figure 3 .
[0036] Figure markings: 100, first buffer component; 10, guide shoe; 11, back plate; 111, connecting hole; 12, shell; 13, groove; 20, first electromagnetic group; 2a, electromagnetic block; 21, first electromagnetic block; 22, second electromagnetic block; 23, third electromagnetic block; 300, second buffer component; 30, guide rail; 31, guide rail back plate; 32, guide rail shell; 40, second electromagnetic group; 4a, magnetic block; 41, first magnetic block; 42, second magnetic block; 43, third magnetic block; 44, fourth magnetic block; 400, control component; 401, magnetic field sensor; 402, controller. DETAILED DESCRIPTION
[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.
[0038] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0040] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.
[0041] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.
[0042] See also Figures 1 to 10 The present application provides an elevator buffer device, comprising a first buffer component 100, a second buffer component 300, and a control component 400. The first buffer component 100 comprises a guide shoe 10 and a first electromagnetic group 20 disposed within the guide shoe 10. The second buffer component 300 comprises a guide rail 30 and a second electromagnetic group 40 disposed within the guide rail 30. The guide shoe 10 is capable of moving up and down relative to the guide rail 30 in a height direction. The second electromagnetic group 40 is configured to generate an electromagnetic repulsive force or an electromagnetic attractive force toward the first electromagnetic group 20. The first electromagnetic group 20 / the second electromagnetic group 40 are electrically connected to the control component 400. After the first electromagnetic group 20 passes the second electromagnetic group 40, the control component 400 controls the first electromagnetic group 20 / the second electromagnetic group 40 to reverse its magnetic polarity, thereby converting the electromagnetic repulsive force between the first electromagnetic group 20 and the second electromagnetic group 40 into an electromagnetic attractive force, or converting the electromagnetic attractive force between the first electromagnetic group 20 and the second electromagnetic group 40 into an electromagnetic repulsive force.
[0043] It is understandable that when the elevator car fails to reach the ground floor leveling position due to special reasons such as a malfunction or overspeed, the car falls downward, and the guide shoe 10 slides downward along the guide rail 30. When the first electromagnetic group 20 and the second electromagnetic group 40 gradually approach each other and reach a certain position, an electromagnetic repulsion is generated between them, causing the car to begin to decelerate. The car continues to move downward at the decelerated speed. When the first electromagnetic group 20 passes the second electromagnetic group 40, the control component 400 can control the first electromagnetic group 20 / second electromagnetic group 40 to reverse the magnetic poles, converting the electromagnetic repulsion between the two into an electromagnetic attraction. The attraction generated between the two further slows the car's downward movement speed, ensuring that the car reaches the shaft pit at a low speed, with a good buffering effect. When the first electromagnetic group 20 and the second electromagnetic group 40 are gradually approaching each other, an electromagnetic repulsive force is generated between the first electromagnetic group 20 and the second electromagnetic group 40 to prevent the guide shoe 10 from moving closer. When the first electromagnetic group 20 passes the second electromagnetic group 40 and moves in a direction away from the second electromagnetic group 40, the control component 400 controls the electromagnetic repulsive force between the first electromagnetic group 20 and the second electromagnetic group 40 to be converted into an electromagnetic attractive force to prevent the guide shoe 10 from moving away.
[0044] Furthermore, the first electromagnetic group 20 and the second electromagnetic group 40 are connected to a power supply and are always powered on, ensuring that the two electromagnetic groups can immediately generate repulsion or attraction when they are close to each other. The response speed is very fast, which can effectively reduce the distance and impact force of the elevator falling.
[0045] In one embodiment, the first electromagnetic group 20 is electrically connected to the control component 400. When the first electromagnetic group 20 passes the second electromagnetic group 40, the control component 400 controls the first electromagnetic group 20 to reverse its magnetic polarity, thereby converting the electromagnetic repulsion between the first electromagnetic group 20 and the second electromagnetic group 40 into an electromagnetic attraction.
[0046] Of course, in other embodiments, the second electromagnetic group 40 may be electrically connected to the control component 400. When the second electromagnetic group 40 passes the first electromagnetic group 20, the control component 400 controls the second electromagnetic group 40 to reverse its magnetic polarity, thereby converting the electromagnetic repulsion between the first electromagnetic group 20 and the second electromagnetic group 40 into an electromagnetic attraction.
[0047] In one embodiment, the second electromagnetic group 40 includes multiple magnetic blocks 4a, which are spaced vertically along the height of the guide rail 30, with adjacent magnetic blocks 4a having opposite magnetic poles. When the first electromagnetic group 20 passes by the multiple magnetic blocks 4a, the control component 400 controls the first electromagnetic group 20 to reverse its magnetic poles. Alternatively, the control component 400 controls the multiple magnetic blocks 4a in the second electromagnetic group 40 to reverse their magnetic poles after the first electromagnetic group 20 passes by. The first electromagnetic group 20 can be configured as one or more electromagnetic blocks, with the selection being based on actual needs.
[0048] It can be understood that when the first electromagnetic group 20 passes through multiple magnetic blocks 4a in sequence, an electromagnetic repulsive force is generated between the first electromagnetic group 20 and the passed magnetic block 4a. After the first electromagnetic group 20 passes through the magnetic block 4a, the control component 400 controls the first electromagnetic group 20 to reverse the magnetic pole so that the first electromagnetic group 20 and the passed magnetic block 4a are converted into electromagnetic attraction. At the same time, an electromagnetic repulsive force is generated between the first electromagnetic group 20 and another magnetic block 4a located below the passed magnetic block 4a. In other embodiments, the first electromagnetic group 20 includes multiple electromagnetic blocks. When the electromagnetic blocks in the first electromagnetic group 20 pass through the magnetic block 4a in sequence, an electromagnetic repulsive force is generated between the electromagnetic blocks in the first electromagnetic group 20 and the passed magnetic block 4a. After the electromagnetic block passes through the magnetic block 4a, the electromagnetic block is controlled to reverse its magnetic pole, so that the electromagnetic repulsive force between the electromagnetic block and the magnetic block 4a above it (i.e., the passed magnetic block 4a) is converted into an electromagnetic attractive force, and an electromagnetic repulsive force is generated between the electromagnetic block and the magnetic block 4a below the passed magnetic block 4a. Thus, when the first electromagnetic group 20 passes through multiple magnetic blocks 4a in sequence, the first electromagnetic group 20 will be in a state where it is repelled by the magnetic block 4a below and attracted by the magnetic block 4a above. Compared with the method of being only repulsive, the car can be decelerated to a greater extent. Of course, the control component 400 can control the multiple magnetic blocks 4a in the second electromagnetic group 40 to reverse their magnetic poles to convert the electromagnetic repulsive force and electromagnetic attractive force between the first electromagnetic group 20 and the passed magnetic block 4a.
[0049] In one embodiment, the first electromagnetic group 20 includes multiple electromagnetic blocks 2a, which are spaced apart vertically along the height of the guide rail 30 and have opposite magnetic polarity. The second electromagnetic group 40 can be configured as one or more magnetic blocks, with the selection being based on actual needs. After the multiple electromagnetic blocks 2a in the first electromagnetic group 20 sequentially pass through the second electromagnetic group 40, the control component 400 sequentially controls the second electromagnetic group 40 to reverse its magnetic polarity. Alternatively, the control component 400 controls the multiple electromagnetic blocks 2a in the first electromagnetic group 20 to reverse their magnetic polarity after passing through the second electromagnetic group 40. The specific magnetic polarity reversal process is described above.
[0050] In one embodiment, the second electromagnetic group 40 includes multiple magnets 4a, which are spaced vertically along the height of the guide rail 30, with adjacent magnets having opposite magnetic poles. The first electromagnetic group 20 includes multiple magnets 2a, which are spaced vertically along the height of the guide rail 30, with opposite magnetic poles. This allows for multiple deceleration operations, enhancing the cushioning effect.
[0051] Initially, the magnetic pole of the bottommost electromagnetic block 2a, located closest to magnetic block 4a, aligns with the magnetic pole of the topmost electromagnetic block 4a, located closest to electromagnetic block 2a. In other words, in the initial state, such as the factory default setting, the bottommost electromagnetic block 2a and the topmost magnetic block 4a generate a repulsive electromagnetic force. As the car falls, the bottommost electromagnetic block 2a and the topmost magnetic block 4a gradually approach each other. Once they reach a certain point, an electromagnetic repulsive force is generated between them, causing the car to begin to decelerate.
[0052] See also Figure 6 、 Figure 7 In one embodiment, the plurality of magnetic blocks 4a are provided in pairs, including a first magnetic block 41 and a second magnetic block 42. The first magnetic block 41 and the second magnetic block 42 have opposite magnetic poles. Along the height of the guide rail 30, the first magnetic block 41 is positioned above the second magnetic block 42. The magnetic pole of the first magnetic block 41 facing the first electromagnetic group 20 repels the magnetic pole of the first electromagnetic group 20 facing the first magnetic block 41. In other words, the magnetic poles are identical, generating a repulsive electromagnetic force.
[0053] When the first electromagnetic group 20 passes through the first magnetic block 41 and the second magnetic block 42 respectively, an electromagnetic repulsive force is generated between the two. After passing, the control component 400 controls the first electromagnetic group 20 to reverse its magnetic poles, so that the electromagnetic repulsive force between the first magnetic block 41 and the first electromagnetic group 20 is converted into an electromagnetic attractive force, and the second magnetic block 42 and the first electromagnetic group 20 generate an electromagnetic repulsive force. Therefore, when the first electromagnetic group 20 passes the first magnetic block 41, the first electromagnetic group 20 will be in a state where it is repelled by the second magnetic block 42 from below and attracted by the first magnetic block 41 from above. Compared with the method of being only repulsive, it can decelerate the car to a greater extent. When the first electromagnetic group 20 passes the second magnetic block 42, the first electromagnetic group 20 will also be attracted by the second magnetic block 42, further decelerating the car, and achieving a good buffering effect.
[0054] In one embodiment, the plurality of magnetic blocks 4a is provided as four, namely, a third magnetic block 43 and a fourth magnetic block 44. Along the height direction of the guide rail 30, the third magnetic block 43 is located below the second magnetic block 42, and the two magnetic poles are arranged in opposite directions. The fourth magnetic block 44 is located below the third magnetic block 43, and the two magnetic poles are arranged in opposite directions. After the first electromagnetic group 20 passes through the third magnetic block 43 and the fourth magnetic block 44, the control component 400 controls the first electromagnetic group 20 to reverse its magnetic poles. This converts the electromagnetic repulsion between the third magnetic block 43 and the first electromagnetic group 20 into an electromagnetic attraction, and generates an electromagnetic repulsion between the fourth magnetic block 44 and the first electromagnetic group 20.
[0055] After the first electromagnetic group 20 passes the third magnetic block 43, it is repelled from below by the fourth magnetic block 44 and attracted from above by the third magnetic block 43. This significantly reduces the car's speed compared to a system that only relies on repulsion. Furthermore, after the first electromagnetic group 20 passes the fourth magnetic block 44, it is also attracted by the fourth magnetic block 44, further reducing the car's speed and achieving a good cushioning effect.
[0056] Of course, the number of the plurality of magnetic blocks 4a is not limited thereto, and may also be set to values such as 3, 5, 6, or 7, and may also be specifically selected according to actual needs.
[0057] For example, the same magnetic poles mentioned above may be both N poles or both S poles, which can be selected according to actual needs and are not particularly limited here.
[0058] See also Figure 3 、 Figure 4 In one embodiment, the plurality of electromagnetic blocks 2a are provided in two configurations, including a first electromagnetic block 21 and a second electromagnetic block 22. The first electromagnetic block 21 and the second electromagnetic block 22 have opposite magnetic poles. Along the height of the guide rail 30, the second electromagnetic block 22 is positioned above the first electromagnetic block 21. The magnetic pole of the first electromagnetic block 21 facing the first magnetic block 41 repels the magnetic pole of the first magnetic block 41 facing the first electromagnetic block 21. In other words, their magnetic poles are identical, generating a repulsive electromagnetic force.
[0059] For example, the same magnetic poles may be both N poles or both S poles, which can be selected according to actual needs and is not particularly limited here.
[0060] It is understandable that when the first electromagnetic block 21 passes the first magnetic block 41, an electromagnetic repulsive force is generated between the two. After the first electromagnetic block 21 passes the first magnetic block 41, the first electromagnetic block 21 will be in a state where it is repelled by the second magnetic block 42 from below and attracted by the first magnetic block 41 from above. At the same time, the second electromagnetic block 22 is located above the first magnetic block 41 and will be repelled by the first magnetic block 41. After the second electromagnetic block 22 passes the second magnetic block 42, the second magnetic block 42 will also be in a state where it is repelled from below and attracted from above. By analogy, by setting at least two electromagnetic blocks, the deceleration operation can be repeated twice, and the buffering effect is improved.
[0061] In one embodiment, the plurality of electromagnetic blocks 2a are provided as three, namely, a third electromagnetic block 23 is further provided. The third electromagnetic block 23 and the second electromagnetic block 22 are provided with opposite magnetic poles. The third electromagnetic block 23 is located above the second electromagnetic block 22 along the height direction of the guide rail 30 .
[0062] It is understandable that the third electromagnetic block 23 can repeat the above-mentioned deceleration operation once more, and the buffering effect is further improved.
[0063] Of course, the number of the multiple electromagnetic blocks 2a is not limited thereto, and may also be set to 4, 5, 6, 7, etc., and may also be specifically selected according to actual needs.
[0064] Preferably, the spacing between the first electromagnetic block 21, the second electromagnetic block 22, and the third electromagnetic block 23 and the spacing between the first magnetic block 41, the second magnetic block 42, the third magnetic block 43, and the fourth magnetic block 44 are set to be equal to ensure that when the first electromagnetic group 20 passes through the second electromagnetic group 40, the electromagnetic blocks can be placed correspondingly between two adjacent magnetic blocks to ensure the stable generation of electromagnetic repulsion and electromagnetic attraction.
[0065] In other embodiments, the number, size, and arrangement of the electromagnetic blocks and the number, size, and arrangement of the magnetic blocks are not limited to these and can be adjusted according to actual needs to adapt to different elevator models and usage environments, flexibly adjusting performance to meet different needs. The electromagnetic blocks and magnetic blocks can be ordinary magnetic blocks or electromagnetic blocks.
[0066] Further, see Figure 2 、 Figure 4 The guide shoe 10 includes a back plate 11 and a housing 12. The housing 12 is mounted on the back plate 11 and has a groove 13 formed therein for mate with the guide rail. The guide rail 30 is positioned within the groove 13. Two first electromagnetic groups 20 are provided. Both groups are located within the housing 12, one on each side of the groove 13. The groove 13 is located on the side closest to the guide rail 30.
[0067] For example, the guide rail 30 is partially embedded in the groove 13, and there is a certain gap between the two. The guide rail guides the guide shoe to avoid positional deviation during movement. In other embodiments, the guide rail 30 and the groove 13 can also be directly configured to slide together. The shell 12 is an internal hollow structure, and the first electromagnetic group 20 is disposed in the shell 12. Since the first electromagnetic group 20 is provided in two groups, both groups of the first electromagnetic group 20 can cooperate with the second electromagnetic group 40 in the guide rail 30 to decelerate and buffer the car, thereby improving the buffering effect. Moreover, the two groups of the first electromagnetic group 20 are provided on both sides of the groove 13, so that the magnetic force acting on the two groups of the first electromagnetic group 20 is basically the same, and it is not easy for one side of the car to decelerate too fast or too slow, and the car operation is more stable.
[0068] In one embodiment, the control assembly 400 includes a magnetic field sensor 401 and a controller 402. The magnetic field sensor 401 is electrically connected to the controller 402. When the magnetic field sensor 401 senses a change in the magnetic field, it sends a signal to the controller 402. The controller 402 then switches the current direction of the first electromagnetic group 20, causing the magnetic pole of the first electromagnetic group 20 to reverse.
[0069] For example, the magnetic field sensor 401 is a Hall sensor, and the controller 402 is a single chip microcomputer or a PLC controller 402 .
[0070] Furthermore, the magnetic field sensor 401 is disposed at one end of the groove 13 away from the guide rail 30 , that is, located in the space enclosed by the first electromagnetic group 20 and the second electromagnetic group 40 , and can sense magnetic field changes more quickly.
[0071] Exemplarily, the groove 13 is a U-shaped groove, which can fit the guide rail 30 while leaving space for the magnetic field sensor 401 .
[0072] Furthermore, the controller 402 is disposed in the housing 12 and is located between the two first electromagnetic groups 20 , corresponding to the magnetic field sensor 401 , so as to maximize the use of the free space in the housing 12 .
[0073] Furthermore, the back plate 11 is provided with connection holes 111 for connecting to the car, and the back plate 11 and the car can be connected by screws, bolts, etc. Preferably, a plurality of connection holes 111 are provided, and the plurality of connection holes 111 are provided on both sides of the shell 12, so that the connection of the back plate 11 is more stable.
[0074] For example, the backboard 11 can be connected to the car bottom platform, the straight beam or the load-bearing part of the car.
[0075] In one embodiment, the guide rail 30 is provided in the elevator shaft pit. Figure 5 The guide rail 30 includes a guide rail back plate 31 and a guide rail housing 32 provided on the guide rail back plate 31. The guide rail housing 32 plays a certain guiding role on the guide shoe 10, and the guide rail housing 32 is a hollow structure. The second electromagnetic group 40 is provided in the guide rail housing 32.
[0076] For example, the guide rail 30 above the hoistway pit is configured as a conventional guide rail 30, which is connected to the guide rail 30 disposed in the hoistway pit, and together they guide the guide shoe 10. Of course, in other embodiments, the length of the guide rail 30 can be directly configured to be the same as the hoistway length, and the second electromagnetic group 40 can be disposed at the bottom of the guide rail 30.
[0077] The present application also provides an elevator, comprising the elevator buffer device according to any one of the above embodiments.
[0078] Working principle:
[0079] See also Figures 8-10The first and second electromagnetic groups 20 and 40 are always energized. Initially, the magnetic poles of the first electromagnetic block 21 and the first magnetic block 41, which are close to each other, are aligned, resulting in magnetic repulsion. If the elevator car fails to reach the ground floor due to a malfunction, overspeed, or other special reasons, the car descends, the guide shoe 10 moves downward along the guide rail 30, and the distance between the first electromagnetic block 21 and the first magnetic block 41 gradually decreases, causing the car to decelerate under the action of the repulsive magnetic forces. The car continues to fall in a decelerated state. When the first electromagnetic block 21 passes the first magnetic block 41, the magnetic field sensor 401 senses the change in magnetic field and sends a signal to the controller 402. The controller 402 controls the switching of the current direction of the first electromagnetic group 20, causing the magnetic poles of the first electromagnetic group 20 to reverse (the magnetic poles of the first electromagnetic block 21, the second electromagnetic block 22, and the third electromagnetic block 23 all reverse). At this time, the magnetic poles of the ends of the first electromagnetic block 21 and the first magnetic block 41 that are close to each other are opposite, while the magnetic poles of the ends of the first electromagnetic block 21 and the second magnetic block 42 that are close to each other are the same. In other words, the first electromagnetic group 20 is in a state of being repelled by the second magnetic block 42 from below and attracted by the first magnetic block 41 from above, further decelerating the car. The guide shoe 10 then continues to move downward. The magnetic field sensor 401 senses the change in magnetic field after passing the second magnetic block 42, the third magnetic block 43, and the fourth magnetic block 44. The above operation after sensing the magnetic field change is repeated, further decelerating the car until the car stops at a certain position.
[0080] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0081] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.
Claims
1. An elevator buffer device, characterized in that: include: A first buffer component (100) comprises a guide shoe (10) and a first electromagnetic group (20) arranged in the guide shoe (10); A second buffer component (300) comprises a guide rail (30) and a second electromagnetic group (40) disposed in the guide rail (30); the guide shoe (10) is capable of moving up and down relative to the guide rail (30); the second electromagnetic group (40) is used to generate an electromagnetic repulsive force or an electromagnetic attractive force toward the first electromagnetic group (20) to prevent the guide shoe (10) from moving; A control component (400) is provided, wherein the first electromagnetic group (20) / the second electromagnetic group (40) is electrically connected to the control component (400); when the first electromagnetic group (20) passes through the second electromagnetic group (40), the control component (400) controls the first electromagnetic group (20) / the second electromagnetic group (40) to reverse the magnetic poles, so as to convert the electromagnetic repulsive force between the first electromagnetic group (20) and the second electromagnetic group (40) into an electromagnetic attractive force or convert the electromagnetic attractive force between the first electromagnetic group (20) and the second electromagnetic group (40) into an electromagnetic repulsive force.
2. The elevator buffer device according to claim 1, characterized in that: The second electromagnetic group (40) includes a plurality of magnetic blocks (4a), and the plurality of magnetic blocks (4a) are arranged in an up-and-down manner along the height direction of the guide rail (30) with adjacent magnetic poles being opposite; When the first electromagnetic group (20) passes through the plurality of magnetic blocks (4a) in sequence, the control component (400) controls the first electromagnetic group (20) in sequence to reverse the magnetic poles, or the control component (400) controls the plurality of magnetic blocks (4a) in the second electromagnetic group (40) to reverse the magnetic poles after the first electromagnetic group (20) passes through.
3. The elevator buffer device according to claim 1, characterized in that: The first electromagnetic group (20) includes a plurality of electromagnetic blocks (2a), and the plurality of electromagnetic blocks (2a) are arranged in an upper and lower interval along the height direction of the guide rail (30) and have opposite magnetic poles; When the plurality of electromagnetic blocks (2a) in the first electromagnetic group (20) pass through the second electromagnetic group (40) in sequence, the control component (400) controls the second electromagnetic group (40) in sequence to reverse the magnetic poles, or the control component (400) controls the plurality of electromagnetic blocks (2a) in the first electromagnetic group (20) to reverse the magnetic poles after passing through the second electromagnetic group (40).
4. The elevator buffer device according to claim 1, characterized in that: The second electromagnetic group (40) includes a plurality of magnetic blocks (4a), which are arranged at intervals in the vertical direction along the height of the guide rail (30) and have opposite magnetic poles. The first electromagnetic group (20) includes a plurality of electromagnetic blocks (2a), which are arranged at intervals in the vertical direction along the height of the guide rail (30) and have opposite magnetic poles.
5. The elevator buffer device according to claim 4, characterized in that: In an initial state, the magnetic pole of the bottommost electromagnetic block (2a) among the plurality of electromagnetic blocks (2a) close to the second electromagnetic group (40) is consistent with the magnetic pole of the topmost magnetic block (4a) among the plurality of magnetic blocks (4a) close to the first electromagnetic group (20).
6. The elevator buffer device according to claim 1, characterized in that: The guide shoe (10) comprises a back plate (11) and a shell (12); the shell (12) is arranged on the back plate (11) and is formed with a groove (13) that matches the guide rail; the first electromagnetic group (20) is provided in two groups, and the two groups of the first electromagnetic groups (20) are both arranged in the shell (12) and are respectively arranged on both sides of the groove (13).
7. The elevator buffer device according to claim 6, characterized in that: The control component (400) comprises a magnetic field sensor (401) and a controller (402), wherein the magnetic field sensor (401) is arranged at one end of the groove (13) away from the guide rail (30); and the controller (402) is arranged in the housing (12) and between the two groups of the first electromagnetic groups (20), and is arranged corresponding to the magnetic field sensor (401).
8. The elevator buffer device according to claim 7, characterized in that: The back plate (11) is provided with a connection hole (111) for connecting to the car, and the connection holes (111) are provided in plurality and are respectively provided on both sides of the shell (12).
9. The elevator buffer device according to claim 1, characterized in that: One end of the guide rail (30) is arranged in the bottom pit of the elevator shaft, and the guide rail (30) includes a guide rail back plate (31) and a guide rail housing (32) arranged on the guide rail back plate (31); the guide rail housing (32) is a hollow structure, and the second electromagnetic group (40) is arranged in the guide rail housing (32).
10. An elevator, characterized in that: The elevator buffer device comprises the elevator buffer device according to any one of claims 1 to 9.