A seismic strength simulation testing device for building structures

Abstract

This invention discloses a seismic strength simulation and testing device for building structures, belonging to the field of seismic testing technology for building structures. It includes a fixed support assembly, a power output structure, a reciprocating adjustment mechanism, a speed adjustment assembly, and a model placement mechanism. This invention constructs a collaborative control system of mechanical transmission and hydraulic linkage, achieving rapid response and precise coordination among the various mechanisms: the first hydraulic cylinder of the model placement mechanism and the second hydraulic cylinder of the reciprocating adjustment mechanism are connected via oil pipelines, ensuring zero-delay transmission of hydraulic signals. This allows for real-time conversion of force changes on the model into displacement adjustments of the control rod, thereby precisely controlling the position and speed of the lifting friction wheel; the damping effect of the friction seat in the reciprocating adjustment mechanism effectively suppresses the inertial sway of the rotating disk, improving the adjustment accuracy of the linkage transmission; the key shaft connection method of the power output structure ensures synchronous rotation of the lifting friction wheel and the output key shaft, avoiding power transmission errors caused by slippage.

Description

Technical Field

[0001] This invention belongs to the field of seismic testing technology for building structures, specifically referring to a seismic strength simulation testing device for building structures. Background Technology

[0002] In scenarios such as model manufacturing, experimental testing, and industrial production, model placement devices, as core auxiliary equipment, must meet multiple requirements, including stable load-bearing capacity, flexible adjustment, and precise control. Currently available devices generally suffer from the following technical pain points: First, low structural integration; fixed support components, power output, and adjustment mechanisms are mostly designed separately, occupying a large space and prone to insufficient operational stability due to connection gaps. Second, limited adjustment functions; most devices can only achieve fixed placement or simple lifting of the model, unable to precisely control the swaying frequency and power output speed according to experimental needs, limiting adaptability. Third, poor ease of maintenance; internal component repair requires disassembling multiple external structures, and the lack of real-time visual monitoring methods makes it difficult to quickly detect potential faults. Fourth, weak linkage performance; each mechanism relies on independent drive control, making it difficult to form a collaborative working system, resulting in low adjustment accuracy and lag in response.

[0003] To address the aforementioned issues, developing a compact, precisely adjustable, conveniently maintained, and highly efficient model placement device is crucial for improving model testing efficiency and reliability, and also provides direction for technological upgrades in related fields. This device integrates fixed support components, a power output structure, a reciprocating adjustment mechanism, a speed adjustment component, and a model placement mechanism to construct an integrated collaborative working system, effectively solving many shortcomings of existing technologies. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the existing technology, the present invention provides a building structure seismic strength simulation testing device, which effectively solves the problems currently on the market.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a building structure seismic strength simulation and testing device, including a fixed support component, a power output structure, a reciprocating adjustment mechanism, a speed adjustment component, and a model placement mechanism; the fixed support component provides a bearing foundation for the device, the power output structure and the reciprocating adjustment mechanism are both located inside the fixed support component, the reciprocating adjustment mechanism is connected to the power output structure to drive its position adjustment, the speed adjustment component abuts and cooperates with the power output structure to realize power transmission, and the model placement mechanism is located at the top of the fixed support component and is linked with the speed adjustment component.

[0006] Furthermore, the fixed support assembly includes a support shell, a top plate, a first fastening bolt, a controller, an inspection door, and a second fastening bolt; the shape and size of the top plate match the top of the support shell, and it is detachably connected to the top of the support shell by the first fastening bolt; the controller is located on the front surface of the support shell, and the inspection door penetrates the support shell and is detachably fixed by the second fastening bolt.

[0007] Furthermore, a transparent plate is provided on the supporting shell to observe the internal situation; the power output structure includes a drive motor, an output key shaft, a lifting friction wheel and a connecting block; the drive motor is located inside the supporting shell, the output key shaft is fixedly connected to the output end of the drive motor, and the lifting friction wheel is slidably sleeved on the output key shaft.

[0008] Furthermore, the lifting friction wheel is symmetrically provided with rotating grooves, and the connecting block is slidably embedded in the rotating grooves; the reciprocating adjustment mechanism includes a second drive motor, a drive gear, a rotating disk, a sliding sleeve, and a control ring; the second drive motor is located inside the support housing, and the drive gear is fixedly connected to the output end of the second drive motor.

[0009] Furthermore, the rotating disk has evenly spaced limit grooves, and the sliding sleeve is slidably fitted into the limit grooves. Fixed teeth are evenly distributed on its inner wall, and the fixed teeth mesh with the drive gear. The control ring is fixedly connected to the sliding sleeve, and a control rod is slidably connected to the control ring. The other end of the control rod is slidably connected to the bottom surface inside the support housing.

[0010] Furthermore, the reciprocating adjustment mechanism also includes a first connecting rod and a second connecting rod; one end of the first connecting rod is hinged to the outer surface of the rotating disk, and the other end is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the connecting block; a friction seat is fixed on the bottom surface inside the support housing, and a friction pad is provided on the friction seat, with the rotating disk abutting against the friction pad.

[0011] Furthermore, the speed adjustment assembly includes a rotating support shaft, a tapered roller, an output shaft, and a cam; the rotating support shaft is rotatably connected to the bottom surface inside the support housing, one end of the tapered roller is connected to the rotating support shaft via a universal coupling, and the other end is connected to the output shaft via a universal coupling; one end of the output shaft passes through and is rotatably connected to the top plate, the cam is fixedly connected to the output shaft, and the outer surface of the tapered roller abuts against the outer surface of the lifting friction wheel.

[0012] Furthermore, the model placement mechanism includes a swaying frame, a telescopic spring, a lifting plate, a first hydraulic cylinder, and a second hydraulic cylinder; the swaying frame is slidably connected to the top plate, and its bottom abuts against the cam; one end of the telescopic spring is fixedly connected to the top plate, and the other end is fixedly connected to the swaying frame.

[0013] Furthermore, the lifting plate is slidably connected to the inner surface of the swaying frame, and a return spring is fixed on the swaying frame. The other end of the return spring is fixedly connected to the lifting plate. The first hydraulic cylinder is fixed on the swaying frame and is connected to the second hydraulic cylinder fixed to the bottom surface of the inner support shell through an oil pipeline. The output end of the second hydraulic cylinder is fixedly connected to the control rod.

[0014] Furthermore, it also includes a protective cover; the protective cover is fixedly connected to one end of the oil storage block, the bracket is fixedly connected to the oil storage block, the protective cover has a through groove, and the drive block is located in the through groove and can move along it.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] (1) A coordinated control system of mechanical transmission + hydraulic linkage was constructed to achieve rapid response and precise coordination of each mechanism: the first hydraulic cylinder of the model placement mechanism and the second hydraulic cylinder of the reciprocating adjustment mechanism are connected through the oil pipeline. The hydraulic signal transmission is without delay, which can convert the force change of the model into the displacement adjustment of the control rod in real time, thereby accurately controlling the position and speed of the lifting friction wheel; the damping effect of the friction seat in the reciprocating adjustment mechanism effectively suppresses the inertial shaking of the rotating disk and improves the adjustment accuracy of the linkage transmission; the key shaft connection method of the power output structure ensures the synchronous rotation of the lifting friction wheel and the output key shaft, avoiding power transmission error caused by slippage;

[0017] (2) The device achieves multiple precise adjustment functions through the synergistic effect of the reciprocating adjustment mechanism and the speed adjustment component: the reciprocating adjustment mechanism converts the circular motion into linear reciprocating motion by means of the linkage transmission, which can precisely control the lifting stroke and reciprocating frequency of the lifting friction wheel; the speed adjustment component utilizes the cone structure characteristics of the cone roller to achieve stepless speed adjustment of the output shaft and cam by changing the contact position of the lifting friction wheel. Combined with the shaking function of the model placement mechanism, the device can flexibly adjust the shaking frequency and power output speed according to the testing requirements of different models, adapting to various working conditions from static model bearing to dynamic testing, and solving the problem of the single adjustment function of traditional devices.

[0018] (3) The fixed support assembly’s outer shell achieves integrated installation of all internal mechanisms, which significantly reduces the space occupied by the device compared to the traditional distributed structure, and avoids operational shaking caused by gaps in the connection of multiple components. The detachable bolt connection design of the top plate and the maintenance door ensures the sealing and structural integrity of the support shell while providing a stable installation environment for internal components. The rigid structural design of the support shell and the precise assembly of each component enable the device to maintain stable operation under high speed and high frequency shaking conditions, and significantly improve the load-bearing reliability. Attached Figure Description

[0019] Figure 1This invention provides a three-dimensional simulation and testing device for the seismic strength of building structures. Figure 1 ;

[0020] Figure 2 This invention provides a three-dimensional simulation and testing device for the seismic strength of building structures. Figure 2 ;

[0021] Figure 3 An exploded view of part of the fixed support assembly structure;

[0022] Figure 4 Schematic diagram of the internal structure supporting the outer shell Figure 1 ;

[0023] Figure 5 Schematic diagram of the internal structure supporting the outer shell Figure 2 ;

[0024] Figure 6 A three-dimensional view of the reciprocating adjustment mechanism;

[0025] Figure 7 This is a partial structural cross-sectional view of the reciprocating adjustment mechanism;

[0026] Figure 8 This is a three-dimensional structural diagram of the speed regulation component;

[0027] Figure 9 This is a cross-sectional schematic diagram of the model placement mechanism.

[0028] The components include: 1. Fixed support assembly; 101. Support shell; 102. Top plate; 103. Fastening bolt one; 104. Controller; 105. Inspection door; 106. Fastening bolt two; 2. Power output structure; 201. Drive motor one; 202. Output key shaft; 203. Lifting friction wheel; 204. Rotating groove; 205. Connecting block; 3. Reciprocating adjustment mechanism; 301. Drive motor two; 302. Drive gear; 303. Rotating disk; 304. Limiting slide groove; 305. 306. Sliding sleeve; 307. Fixed tooth; 308. Control ring; 309. Control rod; 310. First connecting rod; 311. Second connecting rod; 312. Friction seat; 4. Speed ​​adjustment assembly; 401. Rotating support shaft; 402. Conical roller; 403. Output shaft; 404. Cam; 5. Model placement mechanism; 501. Shaking frame; 502. Telescopic spring; 503. Lifting plate; 504. First hydraulic cylinder; 505. Return spring; 506. Oil pipeline; 507. Second hydraulic cylinder.

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0032] like Figures 1-9 As shown.

[0033] In some embodiments, the fixed support assembly 1 may include a support housing 101 for supporting other components of the device; a top plate 102, which has the same shape and size as the top of the support housing 101 and is detachably connected to the support housing 101; a first fastening bolt 103, located at the connection between the top plate 102 and the support housing 101, for fixing the top plate 102 to the top of the support housing 101; a controller 104, located on the front surface of the support housing 101, for controlling the opening and closing of equipment requiring power in the device; an inspection door 105, located on the support housing 101, which passes through and is detachably connected to the support housing 101; and a second fastening bolt 106, located at the connection between the inspection door 105 and the support housing 101, for fixing the inspection door 105 to the support housing 101.

[0034] A transparent plate can also be installed on the support shell 101 to observe the internal condition of the support shell 101 in real time.

[0035] The top plate 102 precisely matches the shape and size of the top of the supporting shell 101 to achieve a closed cover on the top of the supporting shell 101. The top plate 102 and the supporting shell 101 are detachably and fixedly connected by the locking action of the first fastening bolt 103, ensuring the airtightness and structural integrity of the internal space of the supporting shell 101. The controller 104, located on the front surface of the supporting shell 101, serves as the control core of the component, controlling the opening, closing, and operating status of all power-requiring equipment within the device. The maintenance door 105 penetrates the supporting shell 101 and is fixed to it by the second fastening bolt 106. When it is necessary to inspect, maintain, or replace the components inside the supporting shell 101, the second fastening bolt 106 can be unscrewed, and the maintenance door 105 can be removed to form a convenient maintenance passage. After maintenance, the maintenance door 105 is reinstalled and the bolts are tightened to restore the structural airtightness of the supporting shell 101. In addition, the transparent plate installed on the support shell 101 allows for real-time visual monitoring of the operating status and position of the internal components of the support shell 101 without disassembling any parts.

[0036] In this embodiment, the supporting shell 101 provides a stable mounting base for the device components, ensuring the stability of the overall structure. The top plate 102 and the maintenance door 105 are both connected by bolts, which ensures the connection strength and facilitates quick disassembly and assembly, reducing the difficulty of assembly and maintenance. The controller 104 is integrated on the front surface of the supporting shell 101, with an intuitive position, making it easy for operators to directly issue control commands and realize centralized management of the device's power supply equipment. The design of the maintenance door 105 provides a direct passage for the maintenance of internal components, reducing the disassembly and assembly steps during maintenance and significantly shortening the operation and maintenance time. The transparent plate installed on the supporting shell 101 enables real-time visual monitoring of the internal situation. Operators can promptly detect abnormal conditions of components (such as loosening, damage, displacement, etc.) without disassembling the components, providing early warning of potential faults, avoiding equipment damage caused by the expansion of faults, and reducing the cost of fault diagnosis and maintenance.

[0037] In some embodiments, the power output structure 2 may include a drive motor 201, located inside the supporting housing 101, for providing power; an output key shaft 202, fixedly connected to the output end of the drive motor 201; a lifting friction wheel 203, slidably connected to the output key shaft 202; a rotating groove 204, symmetrically formed on the lifting friction wheel 203; and a connecting block 205, slidably connected within the rotating groove 204, for driving the lifting friction wheel 203 to slide along the lifting friction wheel 203.

[0038] The drive motor 201 serves as the power source, installed inside the supporting housing 101, and outputs rotational power when energized. The output key shaft 202 is fixedly connected to the output end of the drive motor 201, transmitting the rotational power of the drive motor 201. The lifting friction wheel 203 is slidably sleeved on the output key shaft 202, and can rotate synchronously with the output key shaft 202, while also being able to slide linearly along the axial direction of the output key shaft 202. The lifting friction wheel 203 has symmetrically opened rotating grooves 204, and the connecting block 205 is slidably embedded in the rotating grooves 204. When the connecting block 205 is subjected to an external driving force (such as the thrust or pull of a linear drive mechanism), the connecting block 205 slides along the rotating grooves 204. Through the guiding effect of the rotating grooves 204, the lifting friction wheel 203 is driven to complete the lifting displacement adjustment along the axial direction of the output key shaft 202.

[0039] In this embodiment, the drive motor 201 directly drives the lifting friction wheel 203 to rotate via the output key shaft 202. The power transmission path is short, reducing power loss. The key shaft connection ensures that the lifting friction wheel 203 rotates synchronously with the output key shaft 202, avoiding slippage and ensuring the stability and reliability of power output. By utilizing the sliding fit between the connecting block 205 and the rotating groove 204, the lifting friction wheel 203 can be adjusted up and down along the axial direction of the output key shaft 202.

[0040] In some embodiments, the reciprocating adjustment mechanism 3 may include a second drive motor 301 disposed inside the supporting housing 101; a drive gear 302 fixedly connected to the output end of the second drive motor 301; a rotating disk 303 disposed inside the supporting housing 101; a limiting groove 304 evenly formed on the limiting groove 304; a sliding sleeve 305 slidably connected to the rotating disk 303 and disposed within the limiting groove 304; and fixed teeth 306 evenly distributed on the inner surface of the sliding sleeve 305 and fixedly connected to the rotating disk 303. The system includes a sliding sleeve 305; a control ring 307, fixedly connected to the sliding sleeve 305; a control rod 308, one end of which is slidably connected to the control ring 307, and the other end of which is slidably connected to the bottom surface inside the support housing 101, used to drive the control ring 307 to move; a first connecting rod 309, one end of which is hinged to the outer surface of the rotating disk 303; a second connecting rod 310, one end of which is hinged to the end of the first connecting rod 309 away from the rotating disk 303, and the other end of which is hinged to the connecting block 205; and a friction seat 311, fixedly connected to the bottom surface inside the support housing 101.

[0041] The fixed gear 306 meshes with the drive gear 302, the friction seat 311 is provided with a friction pad, and the rotating disk 303 abuts against the friction pad provided on the friction seat 311, thereby increasing the force required to drive the rotating disk 303 to rotate.

[0042] The drive gear 302, fixedly connected to the output end of the drive motor 301, engages with the fixed teeth 306 evenly distributed on the inner surface of the sliding sleeve 305. Limiting grooves 304 are evenly distributed on the rotating disk 303. The sliding sleeve 305 is fitted into the limiting grooves 304 and slides within the rotating disk 303. A control ring 307 is fixedly connected to the sliding sleeve 305. One end of a control rod 308 is slidably connected to the control ring 307, and the other end is slidably connected to the bottom surface inside the support housing 101. The rod can move the control ring 307 synchronously through its linear displacement, thereby pulling the sliding sleeve 305 along the limiting grooves 304, causing the fixed teeth 306 on the inner surface of the sliding sleeve 305 to engage with the drive gear 302. The bottom of the rotating disk 303 abuts against the friction pad of the friction seat 311. The damping effect of the friction pad increases the driving force required to drive the rotating disk 303 to rotate. When the drive motor 301 starts, the drive gear 302 drives the sliding sleeve 305 with fixed teeth 306 to rotate. The sliding sleeve 305 drives the rotating disk 303 to rotate synchronously overcoming the damping force of the friction pad through the guiding effect of the limiting groove 304. The first connecting rod 309, which is hinged to the outer surface of the rotating disk 303, moves in a circular motion with the rotating disk 303. Through the hinge relationship with the second connecting rod 310, the circular motion is converted into linear reciprocating motion, which in turn drives the connecting block 205 to move back and forth, and finally realizes the reciprocating lifting and lowering adjustment of the lifting friction wheel 203 in the power output structure 2.

[0043] In this embodiment, the drive motor 301 transmits power through the meshing of the drive gear 302 and the fixed teeth 306 on the inner surface of the sliding sleeve 305. Combined with the guiding and limiting effect of the limiting groove 304 on the sliding sleeve 305, stable power transmission is achieved. The sliding sleeve 305's design, allowing it to slide along the limiting groove 304, enables flexible adjustment of the meshing state between the fixed teeth 306 and the drive gear 302. This facilitates the on-demand start and stop of the rotating disk 303's rotation, improving the controllability of the transmission process. Utilizing the circular motion of the rotating disk 303, the first connecting rod 309 and the second connecting rod 310 are hinged together to precisely convert the circular motion into the linear reciprocating motion of the connecting block 205, ultimately achieving the reciprocating lifting and lowering adjustment of the lifting friction wheel 203. The mechanical characteristics of the linkage transmission structure ensure high efficiency in motion conversion, avoiding power loss. Simultaneously, by controlling the rotation angle of the rotating disk 303, the lifting stroke and reciprocating frequency of the lifting friction wheel 203 can be precisely controlled, meeting the adjustment requirements under different working conditions.

[0044] In some embodiments, the speed adjustment assembly 4 may include a rotating support shaft 401 rotatably connected to the bottom surface inside the support housing 101; a conical roller 402, one end of which is connected to the end of the rotating support shaft 401 away from the support housing 101; an output shaft 403, one end of which passes through and is rotatably connected to the top plate 102, and the other end of which is connected to the end of the conical roller 402 away from the rotating support shaft 401; and a cam 404 fixedly connected to the output shaft 403.

[0045] Both ends of the conical roller 402 are connected to the rotating support shaft 401 and the output shaft 403 respectively via universal couplings, and the outer surface of the conical roller 402 abuts against the outer surface of the lifting friction wheel 203, so that the lifting friction wheel 203 can drive the conical roller 402 to rotate through friction.

[0046] The rotating support shaft 401 is rotatably connected to the bottom surface inside the support housing 101, providing a stable rotational support foundation for the entire assembly. The two ends of the conical roller 402 are flexibly connected to the rotating support shaft 401 and the output shaft 403 respectively via universal couplings. This connection method can compensate for angular deviations caused by position changes in the conical roller 402, ensuring the continuity of power transmission. One end of the output shaft 403 passes through and is rotatably connected to the top plate 102, while the other end is connected to the conical roller 402. The cam 404 is fixedly connected to the output shaft 403 and rotates synchronously with it. When the lifting friction wheel 203 in the power output structure 2 moves up and down axially along the output key shaft 202 under the drive of the reciprocating adjustment mechanism 3, the outer surface of the lifting friction wheel 203 always remains in contact with the outer surface of the conical roller 402, relying on friction to drive the conical roller 402 to rotate. Since the conical roller 402 is truncated cone-shaped, its outer diameter varies at different axial positions. When the contact position between the lifting friction wheel 203 and the conical roller 402 changes, the equivalent transmission radius changes accordingly.

[0047] In this embodiment, by utilizing the contact and engagement between the tapered roller 402 at different outer diameter positions and the lifting friction wheel 203, combined with the reciprocating lifting displacement of the lifting friction wheel 203, the speed of the output shaft 403 and the cam 404 can be steplessly adjusted. This allows for speed adjustments under different operating conditions without replacing transmission components, thus providing a wider range of applications.

[0048] In some embodiments, the model placement mechanism 5 may include a swaying frame 501 slidably connected to the top plate 102; a telescopic spring 502, one end of which is fixedly connected to the top plate 102 and the other end of which is fixedly connected to the swaying frame 501; a lifting plate 503 slidably connected to the inner surface of the swaying frame 501; a first hydraulic cylinder 504 fixedly installed on the swaying frame 501; a return spring 505 fixedly connected to the lifting plate 503 at one end and the other end of which is fixedly connected to the swaying frame 501; an oil pipe 506, one end of which passes through and is fixedly connected to the first hydraulic cylinder 504; and a second hydraulic cylinder 507 fixedly installed on the bottom surface inside the supporting housing 101.

[0049] Cam 404 abuts against the bottom of rocking frame 501, oil pipe 506 passes through and is fixedly connected to second hydraulic cylinder 507 at one end away from first hydraulic cylinder 504, and output end of second hydraulic cylinder 507 is fixedly connected to control rod 308.

[0050] The swaying frame 501 is slidably connected to the top plate 102, and its bottom abuts against the cam 404 of the speed adjustment component 4. The two ends of the telescopic spring 502 are fixedly connected to the top plate 102 and the swaying frame 501, respectively, providing a reset support for the swaying frame 501. When the cam 404 rotates with the output shaft 403, the cam's protruding end periodically pushes the swaying frame 501, causing it to reciprocate along the top plate 102. The telescopic spring 502 extends and retracts synchronously with the displacement of the swaying frame 501, assisting the swaying frame 501 in completing periodic reset and realizing the reciprocating swaying action of the frame. The lifting plate 503 is slidably connected to the inner surface of the swaying frame 501, and the two ends of the reset spring 505 are respectively connected to the lifting plate 503. The lowering plate 503 and the swaying frame 501 provide elastic support for the lifting plate 503. The first hydraulic cylinder 504 is fixedly installed on the swaying frame 501 and is connected to the second hydraulic cylinder 507 fixed inside the bottom surface of the support housing 101 through the oil pipe 506. The output end of the second hydraulic cylinder 507 is fixedly connected to the control rod 308 of the reciprocating adjustment mechanism 3. When the lifting plate 503 carries a model and the pressure changes, the oil pressure inside the first hydraulic cylinder 504 changes. The oil pressure signal is transmitted to the second hydraulic cylinder 507 through the oil pipe 506, driving the output end of the second hydraulic cylinder 507 to extend and retract, thereby driving the control rod 308 to make linear displacement, realizing linkage control with the reciprocating adjustment mechanism 3.

[0051] In some embodiments, relying on the periodic rotation of the cam 404 and the resetting action of the telescopic spring 502, the shaking frame 501 can achieve regular and stable reciprocating shaking. The shaking frequency can be precisely controlled by adjusting the rotation speed of the cam 404 through the speed adjustment component 4, which can meet the shaking test or load-bearing requirements in different model placement scenarios.

[0052] In practical use, the supporting shell 101 serves as the core load-bearing structure of the device, providing a stable installation foundation for all internal components such as drive motor 201, drive motor 301, and the second hydraulic cylinder 507, ensuring the stability of the overall structure of the device. The top plate 102, through precise matching with the top of the supporting shell 101 and with fastening bolt 103, achieves a detachable and fixed connection, effectively sealing the internal space and preventing the intrusion of dust, moisture, and other impurities. The maintenance door 105 is fixed to the supporting shell 101 with fastening bolt 106, forming a convenient maintenance passage for easy maintenance and replacement of components. The controller 104 on the front surface of the supporting shell 101 serves as the control core, centrally managing the opening, closing, and operating status of all power-requiring equipment within the device, simplifying the operation process. The transparent plate installed on the shell enables real-time visual monitoring of the operating status of internal components, allowing for monitoring of equipment operation without disassembly.

[0053] The drive motor 201 is installed inside the support housing 101. After being powered on, it outputs rotational power and transmits the power directly to the lifting friction wheel 203 through the fixedly connected output key shaft 202. The lifting friction wheel 203 is mounted on the output key shaft 202 in a sliding sleeve manner. It can rotate synchronously with the output key shaft 202 to transmit power, and can also slide linearly along the key shaft axis to achieve position adjustment. The symmetrically opened rotating grooves 204 form a sliding fit with the connecting block 205. When the connecting block 205 is subjected to external driving force, the rotating grooves 204 guide the lifting friction wheel 203 to move along the output key shaft 202 axis, providing the basic conditions for subsequent speed adjustment.

[0054] After the drive motor 301 starts, it meshes with the fixed teeth 306 on the inner surface of the sliding sleeve 305 through the drive gear 302 fixed at the output end. The sliding sleeve 305 is embedded in the limiting groove 304 of the rotating disk 303 and can slide along the groove to adjust the meshing state with the drive gear 302, so as to realize the on-demand start and stop of the rotating disk 303. The bottom of the rotating disk 303 abuts against the friction pad of the friction seat 311. The damping effect of the friction pad increases the starting resistance of the rotating disk 303, effectively suppresses the extra rotation caused by inertia, and improves the running stability. When the sliding sleeve 305 drives the rotating disk 303 to rotate, the first connecting rod 309 hinged to the outer surface of the rotating disk 303 moves in a circle with it. Through the hinged cooperation with the second connecting rod 310, the circular motion is converted into the linear reciprocating motion of the connecting block 205, thereby driving the lifting friction wheel 203 to achieve periodic lifting and lowering adjustment along the output key shaft 202.

[0055] When the lifting friction wheel 203 moves up and down along the output key shaft 202 under the drive of the reciprocating adjustment mechanism, its outer surface always remains in contact with the conical roller 402. Friction drives the conical roller 402 to rotate. The two ends of the conical roller 402 are connected to the rotating support shaft 401 and the output shaft 403 respectively via universal couplings. This flexible connection effectively compensates for the angular deviation of the conical roller 402 caused by the change in the position of the lifting friction wheel 203, ensuring the continuity of power transmission. Since the conical roller 402 is frustoconical, its outer diameter differs at different axial positions. When the contact position between the lifting friction wheel 203 and the conical roller 402 changes, the equivalent transmission radius changes synchronously. According to the mechanical principle that "rotational speed is inversely proportional to the transmission radius," the rotational speed of the conical roller 402 is adjusted accordingly and transmitted to the fixedly connected cam 404 through the output shaft 403, achieving stepless adjustment of the cam 404's rotational speed.

[0056] The swaying frame 501 in the model placement mechanism is slidably connected to the top plate 102, and its bottom abuts against the cam 404. The two ends of the telescopic spring 502 are respectively connected to the top plate 102 and the swaying frame 501, providing a reset support for the frame. When the cam 404 rotates with the output shaft 403, its protruding end periodically pushes the swaying frame 501, causing it to slide back and forth along the top plate 102. The telescopic spring 502 extends and retracts synchronously with the displacement, assisting the frame to complete periodic reset and realize the regular swaying of the model.

[0057] The lifting plate 503 is slidably mounted inside the rocking frame 501. The model is placed on the rocking frame 501 in the gap between the lifting plates 503 for installation and fixation. Then, the rocking frame 501 drives the model to rock together. The fixing teeth 306 on the sliding sleeve 305 initially mesh with the drive gear 302, thereby causing the rotating disk 303 to rotate normally. The position of the lifting friction wheel 203 slowly and continuously rises, causing the rotation speed of the cam 404 to gradually increase. When the model is damaged, the damaged parts fall onto the lifting plate 503, causing 503 to be pressed down by force. When the internal oil pressure of the first hydraulic cylinder 504 changes, the oil pressure signal is transmitted to the second hydraulic cylinder 507 through the oil pipeline 506, driving its output end to extend and retract, which in turn drives the control rod 308 to make linear displacement. The control rod 308 pulls the sliding sleeve 305 to slide along the limit slide groove 304 through the control ring 307, so that the fixed tooth 306 disengages from the drive gear 302. At this time, the rotation speed of the cam 404 is fixed. The operator can observe the position of the lifting friction wheel 203 through the observation window to calculate the rotation speed of the cam 404 and calculate the seismic strength of the model.

[0058] After the test is completed, remove the structural fragments on the lifting plate 503 to reset the lifting plate 503. After the lifting plate 503 is reset, the first hydraulic cylinder 504 and the second hydraulic cylinder 507 are reset and drive the fixed gear 306 to re-engage with the drive gear 302. Finally, the controller 104 shuts down the drive motor 201 and the drive motor 301. The above is the overall workflow of the present invention. This step can be repeated next time it is used. The actual operation process is very simple and easy.

[0059] 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 process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0061] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for simulating and testing the seismic strength of building structures, characterized in that: It includes a fixed support component (1), a power output structure (2), a reciprocating adjustment mechanism (3), a speed adjustment component (4), and a model placement mechanism (5). The fixed support component (1) provides a bearing base for the device. The power output structure (2) and the reciprocating adjustment mechanism (3) are both located inside the fixed support component (1). The reciprocating adjustment mechanism (3) is connected to the power output structure (2) to drive its position adjustment. The speed adjustment component (4) abuts and cooperates with the power output structure (2) to realize power transmission. The model placement mechanism (5) is located at the top of the fixed support component (1) and is linked with the speed adjustment component (4).

2. The seismic strength simulation and testing device for building structures according to claim 1, characterized in that: The fixed support assembly (1) includes a support shell (101), a top plate (102), a first fastening bolt (103), a controller (104), an inspection door (105), and a second fastening bolt (106). The shape and size of the top plate (102) match the top of the support shell (101), and it is detachably connected to the top of the support shell (101) by the first fastening bolt (103). The controller (104) is located on the front surface of the support shell (101), and the inspection door (105) penetrates the support shell (101) and is detachably fixed by the second fastening bolt (106).

3. The seismic strength simulation and testing device for building structures according to claim 2, characterized in that: A transparent plate is provided on the supporting shell (101) to observe the internal situation; the power output structure (2) includes a drive motor (201), an output key shaft (202), a lifting friction wheel (203) and a connecting block (205); the drive motor (201) is located inside the supporting shell (101), the output key shaft (202) is fixedly connected to the output end of the drive motor (201), and the lifting friction wheel (203) is slidably sleeved on the output key shaft (202).

4. The seismic strength simulation and testing device for building structures according to claim 3, characterized in that: The lifting friction wheel (203) is symmetrically provided with a rotating groove (204), and the connecting block (205) is slidably embedded in the rotating groove (204); the reciprocating adjustment mechanism (3) includes a second drive motor (301), a drive gear (302), a rotating disk (303), a sliding sleeve (305) and a control ring (307); the second drive motor (301) is located inside the supporting shell (101), and the drive gear (302) is fixedly connected to the output end of the second drive motor (301).

5. The seismic strength simulation and testing device for building structures according to claim 4, characterized in that: Limiting grooves (304) are evenly provided on the rotating disk (303). The sliding sleeve (305) is slidably embedded in the limiting groove (304). Fixed teeth (306) are evenly distributed on its inner wall. The fixed teeth (306) mesh with the drive gear (302). The control ring (307) is fixedly connected to the sliding sleeve (305). A control rod (308) is slidably connected to the control ring (307). The other end of the control rod (308) is slidably connected to the bottom surface inside the supporting shell (101).

6. The seismic strength simulation and testing device for building structures according to claim 5, characterized in that: The reciprocating adjustment mechanism (3) also includes a first connecting rod (309) and a second connecting rod (310); one end of the first connecting rod (309) is hinged to the outer surface of the rotating disk (303), and the other end is hinged to one end of the second connecting rod (310), and the other end of the second connecting rod (310) is hinged to the connecting block (205); a friction seat (311) is fixed on the bottom surface inside the supporting shell (101), and a friction pad is provided on the friction seat (311), and the rotating disk (303) abuts against the friction pad.

7. The seismic strength simulation and testing device for building structures according to claim 6, characterized in that: The speed adjustment assembly (4) includes a rotating support shaft (401), a conical roller (402), an output shaft (403), and a cam (404). The rotating support shaft (401) is rotatably connected to the bottom surface inside the support housing (101). One end of the conical roller (402) is connected to the rotating support shaft (401) via a universal coupling, and the other end is connected to the output shaft (403) via a universal coupling. One end of the output shaft (403) passes through and is rotatably connected to the top plate (102). The cam (404) is fixedly connected to the output shaft (403). The outer surface of the conical roller (402) abuts against the outer surface of the lifting friction wheel (203).

8. The seismic strength simulation and testing device for building structures according to claim 7, characterized in that: The model placement mechanism (5) includes a rocking frame (501), a telescopic spring (502), a lifting plate (503), a first hydraulic cylinder (504), and a second hydraulic cylinder (507); the rocking frame (501) is slidably connected to the top plate (102), and its bottom abuts against the cam (404); one end of the telescopic spring (502) is fixedly connected to the top plate (102), and the other end is fixedly connected to the rocking frame (501).

9. The seismic strength simulation and testing device for building structures according to claim 8, characterized in that: The lifting plate (503) is slidably connected to the inner surface of the swaying frame (501). A return spring (505) is fixed on the swaying frame (501), and the other end of the return spring (505) is fixedly connected to the lifting plate (503). The first hydraulic cylinder (504) is fixed on the swaying frame (501) and is connected to the second hydraulic cylinder (507) fixed on the bottom surface of the support shell (101) through the oil pipeline (506). The output end of the second hydraulic cylinder (507) is fixedly connected to the control rod (308).

10. The seismic strength simulation and testing device for building structures according to claim 9, characterized in that: It also includes a protective cover (6); the protective cover (6) is fixedly connected to one end of the oil storage block (401), the bracket (508) is fixedly connected to the oil storage block (401), the protective cover (6) has a through groove, and the drive block (507) is located in the through groove and can move along it.

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