Earthquake-proof detection device for raised floor

Abstract

The invention relates to the technical field of anti-seismic detection, in particular to a raised floor anti-seismic detection device which comprises a fixed disc seat, a movable disc seat, a universal driving assembly and a control system. The fixed disc seat is used for fixing the overall structure of the device, and the top of the movable disc seat is provided with a tool clamp for fixing a to-be-tested raised floor. The universal driving assembly comprises a rotor disc, a stator disc and a plurality of permanent magnets, the stator disc is provided with a U-shaped magnet yoke body and symmetrically arranged coil windings, an alternating magnetic field is generated by introducing alternating current, and the rotor disc is driven to generate high-frequency axial vibration and planar multidirectional vibration. The control system is used for adjusting current parameters of the coil winding to realize vibration mode control, supports modes such as single-axis vibration, composite vibration and random vibration, and meets detection requirements of different earthquake working conditions. The device adopts a flexible floating support design, is matched with efficient electromagnetic driving, has the advantages of various vibration modes, high detection precision, low energy consumption, high stability and the like, and can be widely applied to the field of raised floor anti-seismic performance detection.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic detection, and specifically to an anti-seismic detection device for raised floors. Background Art

[0002] As a commonly used floor structure in buildings, raised floors are widely used in computer rooms, office buildings, and earthquake-prone areas. Its structure usually consists of a support system and a panel. By suspending the floor, it provides space for equipment cable layout or achieves certain seismic performance. However, with the improvement of the requirements for the seismic performance of floors in modern buildings, the following problems exist in the existing technology for the seismic performance detection of raised floors: Single vibration mode: Existing seismic detection devices usually can only simulate vibrations in a single direction, making it difficult to comprehensively cover the detection requirements of complex earthquake conditions, resulting in limitations in the evaluation results of the seismic performance of floors.

[0003] Limited vibration parameter adjustment ability: The current devices have a narrow adjustment range for parameters such as vibration frequency and amplitude, and cannot meet the diverse requirements of different floor structures for vibration intensity and frequency, affecting the accuracy of detection.

[0004] Poor adaptability of the detection device: Many existing detection devices cannot flexibly adapt to raised floors of different specifications or materials, restricting their wide application.

[0005] Low efficiency and reliability: Traditional mechanical vibration detection devices usually have problems such as slow response speed and unstable vibration. Prolonged use may also cause fatigue damage to the device, affecting the detection efficiency and reliability.

[0006] In view of the above problems, there is an urgent need for a detection device that can simulate multi-directional and multi-mode vibrations, which can not only meet the requirements of seismic performance detection under complex earthquake conditions, but also provide precise vibration parameter adjustment and wide adaptability. For this reason, the present invention proposes an anti-seismic detection device for raised floors, which utilizes the working principle of an axial magnetic field motor and overcomes the deficiencies of the existing technology by precisely controlling vibration parameters, providing a new solution for the comprehensive detection of the seismic performance of raised floors. Summary of the Invention

[0007] The present invention aims to solve the problems of insufficient accuracy in the seismic detection of raised floors, single vibration mode, and high energy consumption in the existing technology, and provides an efficient, precise, and multifunctional anti-seismic detection device for raised floors.

[0008] For this reason, the technical solution adopted by the present invention is as follows: An anti-seismic detection device for raised floors, comprising: A fixed disk seat for fixing the overall structure of the device, with several positioning ears provided on the outer periphery, and a support head column provided on the top of the positioning ears; The moving disk base is provided with airbag column heads and ball - holding covers on its bottom surface. The ball - holding covers are connected to the surface of the support column heads to achieve floating support, and a tooling fixture is provided on the top for fixing the overhead floor to be tested. The universal driving component includes a rotor disk, a stator disk, and a number of permanent magnets. A bearing disk is fixedly installed on the top surface of the rotor disk. The rotor disk and the stator disk are arranged in parallel with a gap in the middle. The stator disk includes a number of U - shaped magnetic yokes, and symmetric coil windings are arranged on both sides of each magnetic yoke for generating an alternating magnetic field. The control system is electrically connected to the stator disk and is used to control the rotor disk to generate high - frequency axial vibration and planar multi - directional vibration by adjusting the current parameters of the coil windings in the stator disk.

[0009] In a possible implementation, a number of permanent magnets are arranged on the surface of the rotor disk, and the permanent magnets are evenly distributed in the circumferential direction to enhance the magnetic field intensity of the vibration.

[0010] In a possible implementation, the airbag column heads are arranged between the fixed disk base and the moving disk base to provide floating support and vibration buffering.

[0011] In a possible implementation, the control system realizes the high - frequency axial vibration and planar multi - directional vibration of the rotor disk by adjusting the current frequency and phase of the coil windings.

[0012] In a possible implementation, the bottom surface of the ball - holding cover is provided with a hemispherical groove adapted to the top end of the support column head, and there is a gap between the bottom surface of the hemispherical groove and the surface of the support column head. The bottom of the moving disk base contacts the support column head through the ball - holding cover to provide elastic support during vibration.

[0013] In a possible implementation, the tooling fixture is used to fix the overhead floor to be tested, and the simulated vibration is applied to the floor through the vibration of the moving disk base.

[0014] In a possible implementation, the control system supports multiple vibration modes, including single - axis vibration, composite vibration, and random vibration, which are suitable for simulating different earthquake conditions. The high - frequency axial vibration is achieved by passing an alternating current through the coil windings and using the axial magnetic field to drive the rotor disk to generate high - frequency reciprocating vibration. The planar multi - directional vibration is formed by regulating the current phase and frequency in the coil windings to form complex multi - directional vibration in the horizontal plane to simulate various earthquake - resistant scenarios.

[0015] In a possible implementation, the coil windings use wire materials resistant to high - frequency current. The size of the gap between the rotor disk and the stator disk can be adjusted to optimize magnetic field coupling, and it is used for the vibration movement of the rotor disk. The gap is larger than the movement amplitude of the rotor disk.

[0016] Based on the above technical solution, the present invention's raised floor seismic testing device, through its flexible floating support design and efficient electromagnetic drive, can accurately simulate a variety of earthquake conditions, adapting to seismic testing needs in diverse scenarios. This device offers diverse vibration patterns, low energy consumption, high stability, and high testing efficiency, contributing to improved testing of the seismic performance of raised floors.

[0017] The beneficial effects achieved by the present invention are: 1. In the present invention, by adjusting the current parameters of the coil winding through the control system, high-frequency axial vibration and planar multi-directional vibration of the mover disk can be achieved, and various vibration modes such as uniaxial vibration, composite vibration and random vibration can be simulated, which is suitable for seismic detection needs under different earthquake conditions.

[0018] 2. The control system in the present invention supports adjusting the frequency and amplitude of the winding current, and can dynamically adjust the vibration intensity to meet the needs of different detection objects and working conditions. The mover disk adopts a radially distributed permanent magnet design, combined with the U-shaped magnetic yoke and symmetrical winding of the stator disk to achieve efficient electromagnetic drive effect and high vibration stability. Compared with traditional mechanical vibration methods, it has lower energy consumption, and the vibration mode switches quickly and responds sensitively.

[0019] 3. In the present invention, the movable disc seat adopts a floating support structure. Through the design of the airbag column head and the elastic ball cover, the vibration transmission is made more flexible, the interference is reduced, and the detection accuracy and efficiency are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a moving disc seat and a universal drive assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the exploded structure of a universal drive assembly according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the surface structure of the movable disc seat according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a mover disc and a stator disc according to an embodiment of the present invention; Figure 6 The figure is a schematic diagram of the yoke and coil winding structure of an embodiment of the present invention.

[0021] Reference numerals: 100, fixed plate seat; 110, positioning ear; 120, support column; 200, moving disc seat; 210, fixture; 220, airbag column head; 230, ball bearing cover; 300, Universal drive assembly; 310, rotor disk; 320, stator disk; 330, permanent magnet; 311, bearing disk; 321, yoke body; 322, coil winding. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0024] The following describes an anti-seismic detection device for raised floors provided by some embodiments of the present invention in combination with the accompanying drawings.

[0025] Combined with Figures 1 to 6 As shown, an anti-seismic detection device for raised floors provided by the present invention includes a fixed disk seat 100, a moving disk seat 200, a universal drive assembly 300 and a control system.

[0026] 1. Structure of the fixed disk seat 100 The fixed disk seat 100 is used to fix the overall structure of the device. A plurality of positioning ears 110 are provided on its outer periphery, and a support head column 120 is provided at the top of the positioning ear 110. The top end of the support head column 120 is used to contact the bearing ball cover 230 of the moving disk seat 200, so as to achieve floating support and provide a support force during the vibration process.

[0027] 2. Structure of the moving disk seat 200 The moving disk seat 200 realizes floating support with the support head column 120 through the airbag column head 220. The airbag column head 220 is installed between the fixed disk seat 100 and the moving disk seat 200, and is used to provide vibration buffering and support stability.

[0028] A tooling fixture 210 is provided at the top of the moving disk seat 200 and is used to fix the raised floor to be measured. The tooling fixture 210 can apply simulated vibrations to the floor to be measured through the vibration of the moving disk seat 200, so as to realize the anti-seismic detection under earthquake conditions.

[0029] The bottom of the moving disk seat 200 contacts the support head column 120 through the bearing ball cover 230. A hemispherical groove adapted to the top end of the support head column 120 is provided on the bottom surface of the bearing ball cover 230, and a gap is provided between the bottom surface of the hemispherical groove and the surface of the support head column 120, ensuring that the moving disk seat 200 has elastic support ability during the vibration process, thereby reducing vibration interference.

[0030] 3. Universal drive assembly 300 The universal drive assembly 300 is used to generate vibrations and includes a rotor disk 310, a stator disk 320 and a plurality of permanent magnets 330.

[0031] The mover disk 310 is arranged in parallel with the stator disk 320, and a gap is provided between the two to form an air gap. The size of the gap is larger than the movement amplitude of the mover disk 310 to ensure the stability of the movement; a bearing disk 311 is provided on the top surface of the mover disk 310 for protecting the top surface of the mover disk 310.

[0032] A number of permanent magnets 330 are evenly distributed on the surface of the mover disk 310. The permanent magnets 330 are evenly arranged in the circumferential direction to enhance the magnetic field strength of the vibration.

[0033] The stator disk 320 includes a number of U-shaped yoke bodies 321, and symmetrical coil windings 322 are arranged on both sides of each yoke body 321. By passing an alternating current through the coil windings 322, an alternating magnetic field is formed between the yoke body 321 and the permanent magnets 330 to drive the mover disk 310 to generate vibration.

[0034] 4. Control System The control system is electrically connected to the coil windings 322 of the stator disk 320 and is used to adjust the current frequency, phase and amplitude to achieve the control of the vibration mode of the mover disk 310.

[0035] Axial high-frequency vibration: By passing an alternating current through the coil windings 322, the mover disk 310 is driven by the axial magnetic field to generate high-frequency reciprocating vibration.

[0036] Plane multi-directional vibration: By regulating the phase and frequency of the current in the coil windings 322, a complex multi-directional vibration in the horizontal plane is formed, which is used to simulate various earthquake-resistant scenarios.

[0037] The control system supports a variety of vibration modes, including single-axis vibration, composite vibration and random vibration, and can meet the detection requirements under different earthquake conditions.

[0038] 5. Special Design and Optimization Flexible support: The device adopts the design of airbag column heads 220 and bearing ball covers 230, so that the moving disk seat 200 has the characteristics of flexible support during vibration, effectively reducing vibration interference and improving detection accuracy.

[0039] Efficient electromagnetic drive: The design of the radial distribution of the permanent magnets 330 cooperates with the U-shaped yoke bodies 321 and symmetrical coil windings 322 of the stator disk 320 to achieve an efficient electromagnetic drive effect. Compared with the traditional mechanical vibration method, the vibration stability is high, the energy consumption is lower, and the vibration mode can be switched quickly and the response is sensitive.

[0040] Adjustability: By dynamically adjusting the current parameters of the coil windings 322 through the control system, the intensity, frequency and direction of the vibration can be adjusted to meet the needs of different detection objects and working conditions.

[0041] Through the above structural design, the overhead floor seismic detection device of the present invention can effectively simulate seismic conditions, meet various seismic detection requirements, and improve the efficiency and accuracy of detection.

[0042] Working principle and usage process of the present invention: The overhead floor seismic detection device of the present invention realizes high-frequency axial vibration and multi-directional planar vibration of the moving disk seat 200 through electromagnetic drive, and transmits the vibration to the overhead floor to be tested, so as to simulate seismic conditions for seismic performance detection.

[0043] Electromagnetic drive principle: After an alternating current is passed through the coil winding 322 in the stator disk 320, an alternating magnetic field is generated. The U-shaped magnetic yoke 321 gathers the magnetic field, and the magnetic field acts on the permanent magnet 330 on the moving disk 310, thereby driving the moving disk 310 to generate vibration. By adjusting the frequency and phase of the current, the moving disk 310 can achieve high-frequency axial reciprocating vibration and multi-directional planar vibration.

[0044] Vibration mode regulation: The control system can achieve various modes such as single-axis vibration, composite vibration, and random vibration by adjusting the current parameters of the coil winding 322, including frequency, phase, and amplitude, for simulating different seismic conditions.

[0045] Vibration transmission: The moving disk seat 200 is flexibly supported by the ball-bearing cover 230 and the airbag stud 220 to the fixed disk seat 100. The fixture 210 on the top of the moving disk seat 200 fixes the overhead floor to be tested. When the moving disk seat 200 vibrates, the vibration is transmitted to the overhead floor through the fixture 210, thereby realizing the seismic performance detection of the floor. The structures of the airbag stud 220 and the ball-bearing cover 230 provide elastic support during the vibration process, reduce interference, and ensure the accuracy of vibration transmission.

[0046] Efficient vibration optimization: The permanent magnets 330 on the surface of the moving disk 310 are evenly distributed in the circumferential direction. Cooperating with the U-shaped magnetic yoke 321 and the symmetric coil windings 322 of the stator disk 320, uniform magnetic field distribution and efficient electromagnetic drive are achieved. The air gap between the moving disk 310 and the stator disk 320 can be adjusted to ensure optimized magnetic field coupling and improve the vibration efficiency.

[0047] Usage process 1. Installation and initialization Fix the fixed disk seat 100 of the device on the base of the detection environment to ensure the overall stability of the device. [[ID=?]]

[0048] Check whether the airbag stud 220 and the ball-bearing cover 230 are properly installed to ensure that the moving disk seat 200 has floating support ability. [[ID=?]]

[0049] Fix the overhead floor to be tested in the fixture 210 on the top of the moving disk seat 200, and adjust the fixture to ensure that the floor is firmly fixed.

[0050] 2. Parameter Settings Start the control system and select a suitable vibration mode according to the detection requirements, including: Single-axis vibration: Simulate the action of seismic waves in a single direction.

[0051] Compound vibration: Simulate the compound seismic waves in multiple directions simultaneously.

[0052] Random vibration: Simulate complex random seismic conditions.

[0053] Set parameters such as vibration frequency, amplitude, and duration in the control system to meet the requirements of different detection objects and working conditions.

[0054] 3. Start Vibration Detection The control system passes an alternating current with set parameters through the coil winding 322 of the stator disk 320 to drive the rotor disk 310 to generate vibrations in the set mode.

[0055] The moving disk seat 200 realizes flexible support through the ball-bearing cover 230 and the airbag stud 220, and applies the vibration to the raised floor.

[0056] 4. Data Acquisition and Analysis During the vibration detection process, collect the mechanical response data of the raised floor under different vibration modes, including parameters such as displacement, stress, and strain.

[0057] The data is recorded in real-time through an external sensor system and transmitted to the analysis software for processing.

[0058] 5. Result Evaluation Evaluate the seismic performance of the raised floor according to the collected detection data, such as indicators like amplitude, durability, and structural stability.

[0059] Output a detection report, analyze the performance of the floor under different seismic conditions, and judge whether it meets the design requirements.

[0060] 6. Shutdown and Maintenance Stop the vibration detection and disassemble the raised floor to be tested.

[0061] Check whether all components of the device are operating normally, especially check the core components such as the airbag stud 220, the ball-bearing cover 230, the rotor disk 310, and the stator disk 320 to ensure there is no abnormal wear or looseness.

[0062] If necessary, adjust the air gap between the rotor disk 310 and the stator disk 320 to maintain the best driving effect.

[0063] Precautions for Use Ensure that the fixed disk seat 100 is firmly installed to avoid displacement during vibration.

[0064] Before vibration detection, all electrical connections should be checked for normality to prevent short - circuit or open - circuit problems.

[0065] When adjusting the air gap, cautious operation is required to avoid having too large or too small an impact on vibration performance and efficiency.

[0066] During the detection process, the operating state of the device should be monitored in real - time to prevent overload from damaging the coil winding 322 or other components.

[0067] Through the above working principle and usage process, this device can achieve efficient and accurate anti - seismic performance detection of raised floors, and is applicable to the structural safety assessment under various seismic conditions.

[0068] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0069] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An overhead floor seismic detection device, characterized in that, Comprising: A fixed disk base (100) for fixing the overall structure of the device, with a number of positioning ears (110) provided on the outer periphery, and a support head column (120) provided on the top of the positioning ear (110); A moving disk base (200), with an airbag stud (220) and a ball bearing cover (230) provided on the bottom surface. The ball bearing cover (230) is connected to the surface of the support head column (120) to achieve floating support. A tooling fixture (210) is provided on the top for fixing the overhead floor to be tested; A universal drive assembly (300), including a rotor disk (310), a stator disk (320), and a number of permanent magnets (330). A bearing disk (311) is fixedly installed on the top surface of the rotor disk (310). The rotor disk (310) and the stator disk (320) are arranged in parallel with a gap in between. The stator disk (320) includes a number of U-shaped magnetic yoke bodies (321), and symmetric coil windings (322) are arranged on both sides of each magnetic yoke body (321) for generating an alternating magnetic field; A control system, electrically connected to the stator disk (320), for controlling the rotor disk (310) to generate high-frequency axial vibration and planar multi-directional vibration by adjusting the current parameters of the coil windings (322) in the stator disk (320).

2. The raised floor seismic detection device according to claim 1, wherein, A number of permanent magnets (330) are provided on the surface of the rotor disk (310), and the permanent magnets (330) are evenly distributed in the circumferential direction for enhancing the magnetic field strength of the vibration.

3. The raised floor seismic detection device according to claim 1, wherein The airbag stud (220) is provided between the fixed disk base (100) and the moving disk base (200) for providing floating support and vibration buffering.

4. The overhead floor seismic detection device according to claim 1, characterized in that, The control system realizes the high-frequency axial vibration and planar multi-directional vibration of the rotor disk (310) by adjusting the current frequency and phase of the coil windings (322).

5. The overhead floor seismic detection device according to claim 1, characterized in that, The bottom surface of the ball bearing cover (230) is provided with a hemispherical groove adapted to the top end of the support head column (120), and there is a gap between the bottom surface of the hemispherical groove and the surface of the support head column (120). The bottom of the moving disk base (200) contacts the support head column (120) through the ball bearing cover (230) for providing elastic support during the vibration process.

6. The raised floor seismic detection device according to claim 1, characterized in that, The tooling fixture (210) is used to fix the overhead floor to be tested, and the simulated vibration is applied to the floor through the vibration of the moving disk base (200).

7. The raised floor seismic detection device according to claim 1, wherein, The control system supports multiple vibration modes, including single-axis vibration, composite vibration, and random vibration, and is suitable for simulating different earthquake conditions; The high-frequency axial vibration is generated by passing an alternating current through the coil windings (322) and using the axial magnetic field to drive the rotor disk (310) to generate high-frequency reciprocating vibration; The planar multi-directional vibration is formed by regulating the current phase and frequency in the coil windings (322) to form complex multi-directional vibration in the horizontal plane to simulate various earthquake-resistant scenarios.

8. The overhead floor seismic detection device according to claim 1, characterized in that, The coil windings (322) are made of wire materials resistant to high-frequency current. The size of the gap between the rotor disk (310) and the stator disk (320) can be optimized by adjustment for magnetic field coupling, and is used for the vibration movement of the rotor disk (310), and the gap is larger than the movement amplitude of the rotor disk (310).

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