Main frame damping device and elevator

Abstract

The main frame damping device comprises an elevator control system, a machine placing beam and a main frame which is arranged on the machine placing beam and used for installing a traction main machine, magnetic levitation mechanisms are arranged at the two ends of the bottom of the machine placing beam, and the elevator control system is electrically connected with the magnetic levitation mechanisms. The problem that vibration noise is transmitted to nearby rooms in the elevator running process is solved, and the running comfort of the elevator is improved.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, and in particular relates to a main frame shock absorption device and an elevator. Background Technology

[0002] Traction elevators primarily rely on the main machine to drive the elevator car up and down. The vibration and noise generated by the high-speed rotation of the main machine and guide wheels are transmitted through solid structures such as the main machine frame and machine support beams to the rooms adjacent to the elevator shaft. Since these rooms are enclosed spaces, the transmitted vibrations and noise are amplified, especially noticeable on floors near the machine room. To achieve vibration reduction and noise isolation, current technologies involve incorporating damping rubber between the main machine frame and the machine support beams, or between the machine support beams and the building's load-bearing beams. Since all components are in close, hard contact, frequency transmission between objects cannot be eliminated. The rubber only reduces vibration and noise, but cannot completely eliminate it. If the building lacks special vibration reduction and noise isolation measures, the vibration transmission is particularly noticeable late at night when the elevator is in quiet conditions, affecting people's rest. Utility Model Content

[0003] The purpose of this utility model is to provide a main frame vibration damping device and an elevator, to solve the problem of vibration and noise being transmitted to nearby rooms during elevator operation, and to improve the comfort of elevator operation.

[0004] This utility model is achieved through the following technical solution:

[0005] A main frame vibration damping device includes an elevator control system, a support beam, and a main frame mounted on the support beam for mounting the traction main unit. The support beam has magnetic levitation mechanisms at both ends of its bottom, and the elevator control system is electrically connected to the magnetic levitation mechanisms.

[0006] Furthermore, the magnetic levitation mechanism includes an electromagnet and a permanent magnet. The permanent magnet is disposed at the bottom of the support beam, and the electromagnet is fixedly disposed below the permanent magnet. The electromagnet is configured to generate a magnetic field that repels the permanent magnet above it when energized, so as to form a levitation gap between the electromagnet and the permanent magnet. The ladder control system is electrically connected to the electromagnet.

[0007] Furthermore, the magnetic levitation mechanism also includes a pressure sensor, which is mounted on the electromagnet and is electrically connected to the elevator control system.

[0008] Furthermore, the magnetic levitation mechanism also includes a rubber plate, which is mounted on the pressure sensor.

[0009] Furthermore, several raised seats are provided between the main frame and the machine beam.

[0010] This utility model also provides an elevator, including the above-mentioned main frame shock absorption device.

[0011] Compared with the existing technology, the beneficial effects of this utility model are as follows: when the elevator is running, the machine beam is magnetically levitated by the magnetic levitation mechanism, which separates the machine beam from the shaft load-bearing beam, so that the rotational vibration of the traction host, guide wheel, etc. cannot be transmitted through the solid, thereby eliminating the transmission of vibration noise, solving the problem of vibration noise being transmitted to nearby rooms during elevator operation, and improving the comfort of elevator operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the main frame shock absorption device of this utility model;

[0013] Figure 2 This is a front view of the main frame shock absorption device of this utility model;

[0014] Figure 3 for Figure 2 Enlarged schematic diagram of part A.

[0015] In the diagram, 1-support beam, 2-main frame, 3-electromagnet, 4-permanent magnet, 5-pressure sensor, 6-rubber plate, 7-elevation seat, 8-traction main unit. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the main frame shock absorption device of this utility model. A main frame shock absorption device includes an elevator control system, a support beam 1, and a main frame 2 installed on the support beam 1 for mounting the traction main unit 8. Magnetic levitation mechanisms are provided at both ends of the bottom of the support beam 1, and the elevator control system is electrically connected to the magnetic levitation mechanisms.

[0022] When the main frame vibration damping device of this utility model is in use, the machine support beam 1 is installed on the load-bearing beam in the shaft through the magnetic levitation mechanism at both ends of its bottom. When the elevator is running, the elevator control system controls the magnetic levitation mechanism to start, and the machine support beam 1 is magnetically levitated through the magnetic levitation mechanism, which isolates the machine support beam 1 from the load-bearing beam. This prevents the rotational vibration of the traction main unit 8, guide wheels, etc. from being transmitted through the solid, thereby eliminating the transmission of vibration noise, solving the problem of vibration noise being transmitted to nearby rooms during elevator operation, and improving the comfort of elevator operation.

[0023] Please refer to the following: Figure 2 and Figure 3 , Figure 2 This is a front view of the main frame shock absorption device of this utility model. Figure 3 for Figure 2A magnified schematic diagram of part A. In one embodiment, the magnetic levitation mechanism includes an electromagnet 3 and a permanent magnet 4. The permanent magnet 4 is disposed at the bottom of the support beam 1, and the electromagnet 3 is fixedly disposed below the permanent magnet 4. The electromagnet 3 is configured to generate a magnetic field that repels the permanent magnet 4 above it when energized, thereby forming a levitation gap between the electromagnet 3 and the permanent magnet 4. The elevator control system is electrically connected to the electromagnet 3. The electromagnet 3 can be fixedly installed on the load-bearing beam. The elevator control system is used to control the start of the electromagnet 3. When the elevator is not running, the electromagnet 3 is not energized, and at this time, the electromagnet 3 is in contact with the permanent magnet 4. When the elevator is running, the electromagnet 3 is energized, and the electromagnet 3 generates an electromagnetic repulsive force that repels the permanent magnet 4 above it. The permanent magnet 4 is levitated and raised by the electromagnetic repulsive force, thereby making the support beam 1 levitated and separating the support beam 1 from the load-bearing beam.

[0024] As the elevator's position changes during operation, the compensating chain or wire rope affects the reaction force on the machine beams 1 on both sides. To ensure that the machine beams 1 remain suspended at all times during elevator operation, in one embodiment, the magnetic levitation mechanism further includes a pressure sensor 5, which is mounted on an electromagnet 3 and electrically connected to the elevator control system. The electromagnet 3 is configured to generate a magnetic field that repels the permanent magnet 4 above it when energized, thus creating a levitation gap between the pressure sensor 5 and the permanent magnet 4. The elevator control system acquires data from the pressure sensor 5 during elevator operation. If the pressure in the pressure sensor 5 increases, the elevator control system adjusts the current value of the electromagnet in real time, thereby increasing the magnetic force repelling the permanent magnet 4 generated by the electromagnet 3, thus ensuring that the machine beams 1 remain suspended at all times.

[0025] In one embodiment, the magnetic levitation mechanism further includes a rubber plate 6, which is disposed on the pressure sensor 5. The electromagnet 3 is configured to generate a magnetic field that repels the permanent magnet 4 above it when energized, thereby creating a levitation gap between the rubber plate 6 and the permanent magnet 4. The rubber plate 6 ensures soft contact between the permanent magnet 4 and the pressure sensor 5 when the support beam 1 is raised and lowered, reducing the impact on the pressure sensor 5 and the permanent magnet 4, preventing damage to the pressure sensor 5 and the permanent magnet 4 due to collision, and also preventing impact noise caused by hard contact between the pressure sensor 5 and the permanent magnet 4.

[0026] In one embodiment, a plurality of shims 7 are provided between the main frame 2 and the support beam 1. The shims 7 can adjust the height of the main frame 2, thereby adjusting the height of the traction main unit 8, ensuring that the distance between the traction main unit 8 and the guide wheel meets the requirements, ensuring the tension and smooth operation of the traction wire rope, and facilitating the installation and maintenance of the traction main unit 8.

[0027] The following is a brief description of the use of the main frame shock absorption device of this utility model:

[0028] When the elevator receives a running command, the elevator control system collects the pressure data from pressure sensor 5 and, based on the system's preset relationship between electromagnetic force and current, converts the pressure data from pressure sensor 5 into current data, which is then linearly output to each electromagnet 3. Different pressure sensor data results in different output currents. When electromagnet 3 is energized, it generates an electromagnetic force that repels the permanent magnet 4 above it. Under this electromagnetic force, the permanent magnet 4 suspends and raises the machine beam 1, causing the pressure sensor 5 to drop to zero. The machine beam 1 is raised only enough to just remove the permanent magnet 4 from contact with the rubber, thus preventing vibration transmission and achieving vibration damping and noise reduction. This also prevents the machine beam 1 from being raised too high, which could affect the level of the main frame 2.

[0029] When the elevator starts running, the compensation chain or wire rope affects the reaction force of the machine beam 1 on both sides as the elevator position changes. When the pressure sensor 5 collects the pressure increase during operation, the elevator control system adjusts the current value of the electromagnet 3 in real time to increase the magnetic force that repels the permanent magnet 4, so that the machine beam 1 is always suspended and there is no contact between the permanent magnet 4 and the rubber plate 6.

[0030] When the elevator stops, the elevator control system linearly reduces the power supply current to electromagnet 3 until the current reaches zero. The magnetic force between electromagnet 3 and permanent magnet 4 gradually decreases to zero, and permanent magnet 4 on the machine beam 1 slowly descends onto rubber plate 6. Rubber plate 6 is placed between permanent magnet 4 and pressure sensor 5, ensuring soft contact between permanent magnet 4 and sensor when machine beam 1 rises and falls, reducing impact on both sensor and permanent magnet 4, and avoiding impact noise from hard contact. Pressure sensor 5 continues to collect the pressure transmitted by machine beam 1 in real time. Furthermore, the elevator control system linearly supplies power according to a preset relationship between current and electromagnetic force, controlling the rising and falling speed of machine beam 1 to avoid impact from rapid lifting and falling.

[0031] After the elevator stops running without any instructions, the elevator control system exits and enters standby mode to save energy.

[0032] This utility model also provides an elevator, including the aforementioned main frame vibration damping device. This elevator, including the aforementioned main frame vibration damping device, possesses all the technical effects of the aforementioned main frame vibration damping device, which will not be elaborated further here.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A mainframe shock mitigation device, comprising: The application relates to a main engine rack damping device, which comprises a ladder control system, a machine beam and a main engine rack arranged on the machine beam for mounting a traction main engine, the bottom of the machine beam is provided with a magnetic suspension mechanism at both ends, the ladder control system is electrically connected with the magnetic suspension mechanism, the magnetic suspension mechanism comprises electromagnets and permanent magnets, the permanent magnets are arranged at the bottom of the machine beam, the electromagnets are fixedly arranged below the permanent magnets, the electromagnets are configured to generate a magnetic field repelling the permanent magnets above the electromagnets after being electrified, so as to form a suspension gap between the electromagnets and the permanent magnets, the ladder control system is electrically connected with the electromagnets, the magnetic suspension mechanism further comprises pressure sensors, the pressure sensors are arranged on the electromagnets, the pressure sensors are electrically connected with the ladder control system, and the magnetic suspension mechanism further comprises rubber plates arranged on the pressure sensors.

2. The main frame damping device of claim 1, wherein, A plurality of heightening seats are arranged between the main engine rack and the machine beam.

3. An elevator, characterized in that The application further relates to a main engine rack damping device comprising the main engine rack according to any one of claims 1-2.

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