Anti-seismic performance detection device for novel prestressed tenon-and-mortise combined frame

Abstract

The invention relates to the related technical field of anti-seismic performance detection devices, in particular to a novel anti-seismic performance detection device for a prestressed tenon-and-mortise combined framework, which comprises a bottom plate, a bracket is mounted above the bottom plate, a vibration mechanism is arranged in the middle of the upper part of the bottom plate, and a mounting groove is formed in the surface of the vibration mechanism. A mounting groove is formed in the bottom plate, a frame is mounted in the mounting groove, a mounting sleeve sleeves the surface of the frame, a pressure detection mechanism is arranged above the support, and a buffer mechanism is arranged at the bottom of the bottom plate. According to the novel anti-seismic performance detection device for the prestressed tenon-and-mortise combined frame, multi-direction vibration loading can be achieved through the arrangement of the vibration mechanism, meanwhile, vibration stability is guaranteed through spring buffering and limiting guiding, a vibration environment better fitting an actual earthquake scene is provided for the frame, the accuracy of detection data is improved, and the detection efficiency is improved. And through the arrangement of the buffer mechanism, violent resonance between the equipment and the ground is avoided, and the accuracy of vibration response data acquisition is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-seismic performance detection devices, and particularly relates to a new anti-seismic performance detection device for a prestressed mortise and tenon combined frame. BACKGROUND

[0002] The anti-seismic performance detection device is a special device for simulating seismic load and testing the mechanical response and anti-destroying capacity of a building component or structural system under vibration, with the improvement of the structural seismic requirements of the building industry, the traditional detection means has been difficult to meet the seismic evaluation requirements of complex structures due to the single loading mode, limited simulation scene and other problems, and the new prestressed mortise and tenon combined frame combines the flexible connection of the traditional mortise and tenon structure and the rigid constraint of the prestressed technology, the anti-seismic mechanism is complex and the stress characteristics are unique, the existing detection device is difficult to simulate multi-directional composite seismic load and accurately capture the dynamic response of the mortise and tenon joint under the action of prestress, therefore, a new anti-seismic performance detection device for a prestressed mortise and tenon combined frame is particularly needed.

[0003] A kind of anti-seismic support performance detection device is disclosed in Chinese patent CN218297538U announced on January 13, 2023, which simulates the anti-seismic performance of the anti-seismic support supporting heavy objects in the installed state through the vibration of the vibration motor, ensuring the practicality of the device, then the anti-seismic support is fixed through the clamping plate, then the electric telescopic rod is moved upward to lift the anti-seismic support, the stability of the anti-seismic support as a whole is simulated through the vibration of the vibration motor, realizing the anti-seismic performance detection of the anti-seismic support in all directions of the device, improving the practicality of the device, but the device only relies on a single vibration motor to vibrate the support, cannot realize multi-directional and multi-node coordinated vibration loading, and the device itself lacks a buffering function, when the vibration motor vibrates at a high frequency, the device itself is prone to violent resonance with the ground or fixed foundation, not only intensifying the wear and loosening of the device components, shortening the service life of the device, but also generating additional interference signals due to its own vibration, affecting the accurate collection of the vibration response data of the support, leading to an increase in detection error. SUMMARY

[0004] The present application aims to provide a new anti-seismic performance detection device for a prestressed mortise and tenon combined frame to solve the problems raised in the background art.

[0005] In order to achieve the above object, the application provides the following technical scheme: a kind of new prestressed mortise and tenon combined frame seismic performance detection device, including bottom plate, the top of the bottom plate is equipped with support, the top of the bottom plate is provided with vibration mechanism, the surface of the vibration mechanism is provided with installation slot, the inside of the installation slot is equipped with frame, the surface of the frame is equipped with mounting sleeve, the mounting sleeve is mounted in the inside of installation slot by bolt, the top of the support is provided with pressure detection mechanism, the bottom of the bottom plate is provided with buffer mechanism;

[0006] The vibration mechanism includes a fixed seat, the fixed seat is installed on the top of the bottom plate, the side of the fixed seat is slidably connected with a horizontal limiting rod, the outer end of the horizontal limiting rod is connected with a stop block, the outer end of the horizontal limiting rod is connected with a horizontal compression spring, the inner end of the horizontal limiting rod and the horizontal compression spring is connected with a vibration seat, the inner side of the vibration seat is connected with a vertical limiting rod, the outer side of the vertical limiting rod is connected with a vertical compression spring, the inside of the vibration seat is connected with a receiving block, the inside of the receiving block is installed with a vibration motor, the both end output of the vibration motor is connected with an output shaft, the surface of the output shaft is connected with an eccentric wheel, the top of the vibration seat and the receiving block is connected with a fixed rod, the top of the fixed rod is connected with a vibration plate, the installation slot is opened on the top surface of the vibration plate.

[0007] Preferably, the horizontal limiting rod, the stop block and the horizontal compression spring are provided with the same four groups on the surface of the fixed seat, and each two groups are symmetrically distributed on the two sides of the fixed seat with the central axis of the fixed seat.

[0008] Preferably, the both ends of the horizontal compression spring and the vertical compression spring are connected with spring seats, the spring seats are connected with the vibration seat and the fixed seat, the receiving block respectively, and the spring seats are detachably connected with the corresponding components through bolts.

[0009] Preferably, the pressure detection mechanism includes a hydraulic cylinder, the hydraulic cylinder is installed on the top of the support, the output end of the hydraulic cylinder is connected with a hydraulic rod, the bottom of the hydraulic rod is connected with a connecting seat, one side of the connecting seat is connected with a guide block through a connecting rod, the top of the support is connected with a guide seat on the inner side, the inner side of the guide seat is provided with a guide slot, the inside of the guide slot is connected with a guide rod, the other side of the connecting seat is connected with a pointer, the top of the support is connected with a scale on the inner side, the bottom of the connecting seat is connected with a pressure sensor, and the bottom of the connecting seat is connected with a pressure plate through a support rod.

[0010] Preferably, the inner side of the guide block is provided with a through hole matched with the guide rod, the inner wall of the through hole is inlaid with a wear-resistant bushing, and the wear-resistant bushing is slidably connected with the guide rod.

[0011] Preferably, the buffer mechanism comprises a connecting rod connected at the bottom of the bottom plate, a connecting plate connected at the bottom of the connecting rod, a buffer spring connected at the bottom of the connecting plate, a fixed plate connected at the bottom end of the buffer spring, a base connected at the outer side of the fixed plate, a damping block connected at both sides of the connecting plate, a damping groove opened at the inner side of the base, a connecting piece connected at the bottom of the bottom plate, a buffer rod connected at the surface of the connecting piece, a screw rod connected at the inner side of the base, a partition block connected at the middle of the screw rod, and a screw rod sleeve sleeved at the surface of the screw rod, wherein the other end of the buffer rod is connected at the top of the screw rod sleeve through the connecting piece, the bottom of the screw rod sleeve is connected with a limiting block, and the inner side bottom of the base is opened with a limiting groove.

[0012] Preferably, the connecting plate drives the connecting rod and the bottom plate to make vertical sliding movement at the inner side of the base through the damping block and the damping groove, and the outer wall size of the damping block is consistent with the inner wall size of the damping groove.

[0013] Preferably, the screw rod is divided into two sections of reverse threads by the partition block, and the surfaces of the two sections of threads are respectively sleeved with screw rod sleeves, and the screw rod sleeves slide on the surface of the screw rod through the limiting block and the limiting groove.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The anti-seismic performance detection device of the new type prestressed mortise and tenon combined frame can realize multi-directional vibration loading by the cooperative vibration structure of the horizontal and vertical vibration mechanisms, and can guarantee vibration stability by spring buffering and limiting guidance, so as to provide a vibration environment more consistent with actual earthquake scenes for the frame and improve the accuracy of detection data.

[0016] 2. The anti-seismic performance detection device of the new type prestressed mortise and tenon combined frame can effectively absorb and disperse vibration energy by the cooperative action of the spring, the damper and the screw rod sleeve, so as to avoid violent resonance between the equipment and the ground, reduce the wear and tear of the machine body and interference signals, guarantee the accuracy of vibration response data collection, and prolong the service life of the equipment. DETAILED DESCRIPTION

[0017] Figure 1 It is a schematic view of the appearance side structure of the present application;

[0018] Figure 2 It is a schematic view of the vibration mechanism structure of the present application;

[0019] Figure 3 It is a schematic view of the cooperation structure of the vibration motor and the eccentric wheel of the present application;

[0020] Figure 4 It is a schematic view of the cooperation structure of the frame and the vibration plate of the present application;

[0021] Figure 5 It is a schematic view of the pressure detection mechanism structure of the application;

[0022] Figure 6 It is a schematic view of the buffer mechanism structure.

[0023] In the figure: 1, bottom plate; 2, support; 3, vibration mechanism; 301, fixed seat; 302, transverse limiting rod; 303, stop block; 304, transverse compression spring; 305, vibration seat; 306, longitudinal limiting rod; 307, longitudinal compression spring; 308, receiving block; 309, vibration motor; 310, output shaft; 311, eccentric wheel; 4, mounting groove; 5, frame; 6, mounting sleeve; 7, pressure detection mechanism; 701, hydraulic cylinder; 702, hydraulic rod; 703, connecting seat; 704, guide block; 705, guide seat; 706, guide groove; 707, guide rod; 708, pointer; 709, scale; 710, pressure sensor; 711, pressing plate; 8, buffer mechanism; 801, connecting rod; 802, connecting plate; 803, buffer spring; 804, fixed plate; 805, base; 806, damping block; 807, damping groove; 808, connecting piece; 809, buffer rod; 810, screw rod; 811, partition block; 812, screw rod sliding sleeve; 813, limiting block; 814, limiting groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0025] Please refer to Figures 1-6 The application provides a technical solution: a novel anti-seismic performance detection device for a prestressed mortise and tenon combined frame, which comprises a bottom plate 1, a support 2 is installed above the bottom plate 1, a vibration mechanism 3 is arranged at the upper middle part of the bottom plate 1, a mounting groove 4 is arranged on the surface of the vibration mechanism 3, a frame 5 is installed in the mounting groove 4, a mounting sleeve 6 is sleeved on the surface of the frame 5, the frame 5 is installed in the mounting groove 4 through the mounting sleeve 6 and bolts, a pressure detection mechanism 7 is arranged above the support 2, and a buffer mechanism 8 is arranged at the bottom of the bottom plate 1.

[0026] The vibration mechanism 3 comprises a fixed seat 301 installed above the middle part of the bottom plate 1, the lateral side of the fixed seat 301 is slidingly connected with a transverse limiting rod 302, the outer end of the transverse limiting rod 302 is connected with a stop block 303, the outer side of one end of the transverse limiting rod 302 is connected with a transverse compression spring 304, the inner end of the transverse limiting rod 302 and the transverse compression spring 304 are both connected with a vibration seat 305, the inner side of the vibration seat 305 is connected with a longitudinal limiting rod 306, the outer side of the longitudinal limiting rod 306 is connected with a longitudinal compression spring 307, the inside of the vibration seat 305 is connected with an accommodating block 308, the inside of the accommodating block 308 is installed with a vibration motor 309, the both end output ends of the vibration motor 309 are connected with an output shaft 310, the surface of the output shaft 310 is connected with an eccentric wheel 311, the upper side of the vibration seat 305 and the accommodating block 308 are both connected with a fixed rod 312, the upper side of the fixed rod 312 is connected with a vibration plate 313, the installation groove 4 is opened on the upper surface of the vibration plate 313, through the setting of the vibration mechanism 3, when the anti-seismic performance of the new type prestressed mortise and tenon combined frame needs to be detected, the vibration motor 309 is started, the output end of the vibration motor 309 drives the output shaft 310 to rotate, the eccentric wheel 311 on the surface of the output shaft 310 rotates synchronously, because the gravity center of the eccentric wheel 311 deviates from the rotation center, periodic centrifugal force is generated in the rotating process, so that the accommodating block 308 vibrates, the vibration is transmitted to the vibration plate 313 through the fixed rod 312, and then the frame 5 installed in the installation groove 4 above the vibration plate 313 vibrates synchronously, the vibration environment during the earthquake is simulated, in the vibration process, the vibration seat 305 will be subjected to the force transmitted by the accommodating block 308, and reciprocating movement in the transverse direction and the longitudinal direction along the transverse limiting rod 302 and the longitudinal limiting rod 306 is generated, the transverse compression spring 304 and the longitudinal compression spring 307 will stretch and contract with the movement of the vibration seat 305, part of the vibration energy is absorbed by using the elastic potential energy of the spring, the buffering effect is achieved, the impact of the vibration on other parts of the device is reduced, the stop block 303 at the outer end of the transverse limiting rod 302 can limit the transverse movement range of the vibration seat 305, prevent it from moving excessively and deviating from the transverse limiting rod 302, and ensure the stability of the vibration process, at the same time, the sliding connection of the transverse limiting rod 302 and the fixed seat 301 and the sliding connection of the longitudinal limiting rod 306 and the vibration seat 305 provide accurate guidance for the movement of the vibration seat 305, ensure that the vibration seat 305 only moves in the set transverse direction and longitudinal direction, avoid unnecessary deviation or shaking, make the vibration suffered by the frame 5 more consistent with the stress condition during the actual earthquake, and thus the accuracy of the anti-seismic performance detection is improved.

[0027] Further, the transverse limiting rods 302, the stop blocks 303 and the transverse compression springs 304 are all provided with the same four groups on the surface of the fixed seat 301, and each two groups are symmetrically distributed on both sides of the fixed seat 301 with the central axis of the fixed seat 301 as the center. Through the arrangement of the transverse limiting rods 302, the stop blocks 303 and the transverse compression springs 304, the multiple groups of symmetrically distributed transverse limiting rods 302 can provide more stable transverse support for the vibration seat 305, enhance the guiding accuracy of the transverse movement, and avoid the inclination of the vibration seat 305 in high-frequency vibration. The stop blocks 303 limit the transverse displacement limit of the vibration seat 305 from multiple directions, cooperate with the elastic buffering of the four groups of transverse compression springs 304, can uniformly disperse the transverse vibration energy, greatly improve the shock absorption effect and structural stability of the vibration mechanism in the transverse direction, and ensure the uniformity of the transverse vibration suffered by the frame 5.

[0028] Further, the transverse compression springs 304 and the longitudinal compression springs 307 are both connected with spring seats at both ends, the spring seats are connected with the vibration seat 305 and the fixed seat 301 and the receiving block 308 respectively, and the spring seats are detachably connected with the corresponding components through bolts. Through the arrangement of the transverse compression springs 304 and the longitudinal compression springs 307, the spring seats can increase the contact area between the springs and the connecting components, make the stress of the springs more uniform, avoid the premature damage of the end of the spring due to stress concentration, and the detachable bolt connection is convenient for replacing springs with different stiffness according to the detection requirements, flexibly adjusting the buffering strength of the transverse and longitudinal directions, adapting to different intensity levels of the vibration simulation scene, and also facilitating the maintenance and replacement of the springs, prolonging the service life of the vibration mechanism 7.

[0029] Further, the pressure detection mechanism 7 comprises a hydraulic cylinder 701 installed in the middle of the top of the support 2, the output end of the hydraulic cylinder 701 is connected with a hydraulic rod 702, the bottom of the hydraulic rod 702 is connected with a connecting seat 703, one side of the connecting seat 703 is connected with a guide block 704 through a connecting rod, the inner side of the top of the support 2 is connected with a guide seat 705, the inner side of the guide seat 705 is provided with a guide groove 706, the inside of the guide groove 706 is connected with a guide rod 707, the other side of the connecting seat 703 is connected with a pointer 708, the inner side of the top of the support 2 is connected with a scale 709, the bottom of the connecting seat 703 is connected with a pressure sensor 710, the bottom of the connecting seat 703 is connected with a pressure plate 711 through a supporting rod, through the arrangement of the pressure detection mechanism 7, when it is needed to exert pressure on the new type of prestressed mortise and tenon combined frame and detect the stress performance thereof, the controller starts the hydraulic cylinder 701, the hydraulic cylinder 701 drives the hydraulic rod 702 to stretch downwards, the hydraulic rod 702 drives the connecting seat 703 at the bottom to move downwards synchronously, the guide block 704 at one side of the connecting seat 703 slides along the guide rod 707 in the guide groove 706 in the inner side of the guide seat 705, which provides accurate guidance for the lifting of the connecting seat 703 and prevents it from deviating or shaking in the movement process, thereby ensuring the accuracy of the pressure exertion direction, in the process that the connecting seat 703 moves downwards, the pressure plate 711 connected through the supporting rod at the bottom gradually approaches the frame 5 and contacts the surface thereof, along with the continuous elongation of the hydraulic rod 702, the pressure plate 711 exerts downward pressure on the frame 5, at the same time, the pressure sensor 710 at the bottom of the connecting seat 703 senses the pressure change in real time and converts the pressure data into an electric signal to feed back to the controller, so as to realize accurate monitoring of the exerted pressure, in the process that the connecting seat 703 moves up and down, the pointer 708 at the other side of the connecting seat 703 moves synchronously with the connecting seat 703, the pointer 708 points to the corresponding scale of the scale 709 inside the support 2, the operator can intuitively read the moving distance of the connecting seat 703 through the cooperation of the pointer and the scale, and further understand the pressure stroke of the pressure plate 711 on the frame 5, combined with the data of the pressure sensor 710, the stress state of the frame 5 under different pressures and displacements can be comprehensively mastered, which provides multi-dimensional detection data for evaluating the anti-seismic performance of the frame, when the detection is completed, the hydraulic cylinder 701 drives the hydraulic rod 702 to contract, drives the connecting seat 703, the pressure plate 711 and other components to reset, the pressure sensor 710 stops detecting, and the pointer 708 returns to the initial position, so as to prepare for the next detection.

[0030] Further, the inner side of the guide block 704 is provided with a through hole matched with the guide rod 707, and a wear-resistant bushing is inlaid on the inner wall of the through hole and is in sliding connection with the guide rod 707. Through the arrangement of the guide block 704 and the guide rod 707, the guide block 704 and the guide rod 707 form a precise sliding fit structure, which can strictly limit the movement track of the connecting seat 703, prevent it from appearing deflection or torsion during the pressure application process, and ensure that the pressure of the pressing plate 711 on the frame 5 is always perpendicular to the detection surface. The wear-resistant bushing in the through hole can reduce the wear rate when the two relative movements, reduce the gap generated by long-term friction, maintain the stability of the guiding accuracy, make the sliding process smoother, avoid the interference of the jamming phenomenon on the uniformity of the pressure application, and ensure the accuracy of the pressure detection data.

[0031] Further, the buffer mechanism 8 comprises a connecting rod 801 connected at the bottom of the bottom plate 1, a connecting plate 802 connected at the bottom of the connecting rod 801, a buffer spring 803 connected at the bottom of the connecting plate 802, a fixed plate 804 connected at the bottom end of the buffer spring 803, a base 805 connected at the outer side of the fixed plate 804, damping blocks 806 connected at both sides of the connecting plate 802, a damping groove 807 opened at the inner side of the base 805, a connecting piece 808 connected at the bottom of the bottom plate 1, a buffer rod 809 connected at the surface of the connecting piece 808, a screw rod 810 connected at the inner side of the base 805, a partition block 811 connected at the middle of the screw rod 810, a screw rod sliding sleeve 812 sleeved at the surface of the screw rod 810, the other end of the buffer rod 809 connected at the top of the screw rod sliding sleeve 812 through the connecting piece 808, a limiting block 813 connected at the bottom of the screw rod sliding sleeve 812, a limiting groove 815 opened at the inner bottom of the base 805, through the arrangement of the buffer mechanism 8, when the vibration mechanism 3 works to generate vibration or the pressure detection mechanism 7 applies pressure to cause the whole device to vibrate, the bottom plate 1 will transmit the vibration to the connecting rod 801, the connecting rod 801 drives the connecting plate 802 to move in the vertical direction inside the base 805, when the connecting plate 802 moves downward, the buffer spring 803 at the bottom is compressed, part of the vibration energy is absorbed by using the elastic deformation of the spring, which plays a preliminary buffering role, at the same time, the damping blocks 806 at both sides of the connecting plate 802 slide along the damping groove 807 inside the base 805, the friction between the damping blocks 806 and the damping groove 807 generates damping force, which further dissipates vibration energy, slows down the movement speed of the connecting plate 802, and enhances the buffering effect, in this process, the connecting piece 808 at the bottom of the bottom plate 1 moves synchronously with the bottom plate 1, drives the buffer rod 809 to push the screw rod sliding sleeve 812 to slide along the screw rod 810, since the screw rod 810 has reverse threads with the partition block 811 as the boundary, the screw rod sliding sleeves 812 at both sides will move relatively close or far away, the inclination angle of the buffer rod 809 changes accordingly, through the decomposition of force, the vibration energy is further dispersed and absorbed, the limiting block 813 at the bottom of the screw rod sliding sleeve 812 slides along the limiting groove 815 at the inner bottom of the base 805, which provides guidance for the movement of the screw rod sliding sleeve 812 and prevents it from deviating, ensuring the stability of the stress of the buffer rod 809, when the vibration weakens or disappears, the elastic potential energy of the buffer spring 803 is released, which pushes the connecting plate 802 to reset upward and drives the bottom plate 1 to return to the initial position, the buffer rod 809 pulls the screw rod sliding sleeve 812 to slide reversely, so that the whole buffer mechanism returns to the original state, through the elastic buffering of the buffer spring 803, the friction damping of the damping blocks 806 and the damping groove 807, and the synergistic effect of the buffer rod 809 and the screw rod sliding sleeve 812, the influence of vibration on the whole device can be effectively reduced, the equipment components are prevented from being damaged by severe vibration, the interference of the external environment caused by the vibration of the device is reduced, and the stable performance of the anti-vibration performance detection process is ensured.

[0032] Further, the connecting plate 802 drives the connecting rod 801 and the bottom plate 1 to make vertical sliding motion in the base 805 through the damping block 806 and the damping slot 807, and the outer wall size of the damping block 806 matches the inner wall size of the damping slot 807. Through the setting of the damping block 806 and the damping slot 807, the close fit of the two provides accurate guidance for the vertical motion of the connecting plate 802, the connecting rod 801 and the bottom plate 1, effectively limits the horizontal displacement thereof, avoids the occurrence of deflection during the buffering process, and at the same time, the stable damping force generated by the sliding friction between the damping block 806 and the damping slot 807 can efficiently dissipate vibration energy, form a composite buffering system with the buffering spring, greatly improve the damping effect, and ensure the smooth motion of the bottom plate 1 and the mechanism above.

[0033] Further, the screw rod 810 is divided into two sections of reverse threads by the partition block 811, and the two sections of threads are respectively sleeved with screw rod sliding sleeves 812. The screw rod sliding sleeves 812 slide on the surface of the screw rod 810 through the limiting block 813 and the limiting slot 815. Through the setting of the screw rod 810, the partition block 811, the screw rod sliding sleeve 812, the limiting block 813 and the limiting slot 814, the two sections of reverse threads of the screw rod 810 enable the two screw rod sliding sleeves 812 to make synchronous reverse motion when vibrating, and the vertical vibration of the bottom plate 1 is converted into horizontal relative displacement by the buffering rod 809, realizing the lateral dispersion of vibration energy. The partition block 811 limits the movement of the screw rod sliding sleeve 812 to prevent collision due to excessive movement. The cooperation of the limiting block 813 and the limiting slot 815 provides stable guidance for the screw rod sliding sleeve 812, ensuring its accurate sliding along the axis of the screw rod 810 and avoiding the jamming of thread transmission, thereby enhancing the adaptability of the buffering mechanism to complex vibration.

[0034] Working principle: when the new type of prestressed mortise and tenon combined frame is detected for seismic performance, first, the frame 5 is fixed on the installation slot 4 above the vibration plate 313 through the installation sleeve 6 and the bolt, to ensure that the frame 5 does not loosen and shift during the detection process. After the detection is started, the vibration mechanism 3 works first, the vibration motor 309 drives the output shaft 310 and the eccentric wheel 311 to rotate, the centrifugal force of the eccentric wheel 311 makes the bearing block 308 vibrate, the vibration is transmitted to the vibration plate 313 through the fixed rod 312, and the frame 5 is driven to simulate the transverse and longitudinal vibration under the earthquake environment. In this process, the vibration seat 305 reciprocates along the transverse limiting rod 302 and the longitudinal limiting rod 306, the transverse compression spring 304 and the longitudinal compression spring 307 absorb vibration energy through deformation, the stop block 303 limits the movement range of the vibration seat 305, ensures the vibration direction to be accurate and stable, and makes the frame 5 bear the vibration load in line with the actual scene. When it is necessary to simulate the working condition that the frame 5 bears pressure in the earthquake, the pressure detection mechanism 7 is started synchronously, the hydraulic cylinder 701 drives the hydraulic rod 702 to stretch and retract, drives the connecting seat 703 and the pressure plate 711 to move downward, the pressure plate 711 applies pressure in the vertical direction to the frame 5, the guide block 704 slides along the guide rod 707 to ensure that the pressure direction is vertical, the pressure sensor 710 monitors the pressure data in real time, and the pointer 708 cooperates with the scale 709 to display the pressure stroke. The operator can obtain the stress state data of the frame 5 under different pressure and vibration combinations through the controller. The vibration generated during the operation of the device is transmitted to the buffer mechanism 8 through the bottom plate 1, the connecting rod 801 drives the connecting plate 802 to move downward, the buffer spring 803 is compressed to absorb energy, and the friction damping of the damping block 806 and the damping slot 807 further dissipates the vibration. At the same time, the bottom plate 1 pushes the screw sleeve 812 to slide along the screw 810 through the connecting piece 808 and the buffer rod 809, uses two reverse threads to make the sleeve move relatively, converts the vertical vibration into horizontal energy dispersion, and the limiting block 813 and the limiting slot 815 ensure the stable movement of the sleeve. After the vibration is weakened, the buffer spring 803 resets to return each component to the initial position, ensures that the overall operation of the device is stable, reduces the influence on the external environment, the pressure plate 711 of the pressure detection mechanism 7 resets, the vibration mechanism 3 stops working, the buffer mechanism 8 returns to the original state, the operator loosens the bolt to remove the frame 5, and the seismic performance detection process is completed. In this way, the use process of the seismic performance detection device for a new type of prestressed mortise and tenon combined frame is completed.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel seismic performance testing device for prestressed mortise and tenon composite frames, comprising a base plate (1), characterized in that: A bracket (2) is installed above the base plate (1), a vibration mechanism (3) is provided in the middle of the upper part of the base plate (1), a mounting groove (4) is provided on the surface of the vibration mechanism (3), a frame (5) is installed inside the mounting groove (4), a mounting sleeve (6) is fitted on the surface of the frame (5), and the mounting sleeve (6) is used to install the frame (5) inside the mounting groove (4) by bolts. A pressure detection mechanism (7) is provided above the bracket (2), and a buffer mechanism (8) is provided at the bottom of the base plate (1). The vibration mechanism (3) includes a fixed base (301), which is installed in the upper middle part of the base plate (1). A transverse limiting rod (302) is slidably connected to the side of the fixed base (301). A stop block (303) is connected to the outer end of the transverse limiting rod (302). A transverse compression spring (304) is connected to the outer side of one end of the transverse limiting rod (302). A vibration seat (305) is connected to the inner end of both the transverse limiting rod (302) and the transverse compression spring (304). A longitudinal limiting rod (306) is connected to the inner side of the vibration seat (305). A longitudinal compression spring (307) is connected to the outside of the vibration seat (305). A receiving block (308) is connected inside the vibration seat (305). A vibration motor (309) is installed inside the receiving block (308). Both ends of the vibration motor (309) are connected to an output shaft (310). An eccentric wheel (311) is connected to the surface of the output shaft (310). A fixing rod (312) is connected above the vibration seat (305) and the receiving block (308). A vibration plate (313) is connected above the fixing rod (312). The mounting groove (4) is opened on the upper surface of the vibration plate (313).

2. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 1, characterized in that: The transverse limiting rod (302), the stop block (303) and the transverse compression spring (304) are all provided with four identical sets on the surface of the fixed seat (301), and each pair of sets is symmetrically distributed on both sides of the fixed seat (301) with respect to the central axis of the fixed seat (301).

3. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 1, characterized in that: Both ends of the transverse compression spring (304) and the longitudinal compression spring (307) are connected to spring seats. The spring seats are respectively connected to the vibration seat (305), the fixed seat (301), and the receiving block (308). The spring seats are detachably connected to the corresponding components by bolts.

4. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 1, characterized in that: The pressure detection mechanism (7) includes a hydraulic cylinder (701), which is installed at the top center of the bracket (2). The output end of the hydraulic cylinder (701) is connected to a hydraulic rod (702). The bottom of the hydraulic rod (702) is connected to a connecting seat (703). One side of the connecting seat (703) is connected to a guide block (704) via a connecting rod. The top inner side of the bracket (2) is connected to a guide seat (705). The inner side of the guide seat (705) is provided with a guide groove (706). The inside of the guide groove (706) is connected to a guide rod (707). The other side of the connecting seat (703) is connected to a pointer (708). The top inner side of the bracket (2) is connected to a scale (709). The bottom of the connecting seat (703) is connected to a pressure sensor (710). The bottom of the connecting seat (703) is connected to a pressure plate (711) via a support rod.

5. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 4, characterized in that: The guide block (704) has a through hole on its inner side that is compatible with the guide rod (707). A wear-resistant bushing is embedded in the inner wall of the through hole, and the wear-resistant bushing is slidably connected to the guide rod (707).

6. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 1, characterized in that: The buffer mechanism (8) includes a connecting rod (801) connected to the bottom of the base plate (1). A connecting plate (802) is connected to the bottom of the connecting rod (801). A buffer spring (803) is connected to the bottom of the connecting plate (802). A fixing plate (804) is connected to the bottom end of the buffer spring (803). A base (805) is connected to the outer side of the fixing plate (804). Damping blocks (806) are connected to both sides of the connecting plate (802). A damping groove (807) is formed on the inner side of the base (805). The bottom of the base plate (1) is... The base (805) is connected to a connector (808), and a buffer rod (809) is connected to the surface of the connector (808). A screw (810) is connected to the inner side of the base (805). A spacer (811) is connected to the middle of the screw (810). A screw sleeve (812) is fitted on the surface of the screw (810). The other end of the buffer rod (809) is connected to the top of the screw sleeve (812) through the connector (808). A limit block (813) is connected to the bottom of the screw sleeve (812). A limit groove (815) is opened on the bottom inner side of the base (805).

7. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 6, characterized in that: The connecting plate (802) drives the connecting rod (801) and the base plate (1) to slide vertically inside the base (805) through the damping block (806) and the damping groove (807), and the outer wall size of the damping block (806) matches the inner wall size of the damping groove (807).

8. The seismic performance testing device for a novel prestressed mortise and tenon composite frame according to claim 6, characterized in that: The screw (810) is divided into two reverse threads by the partition block (811). The two thread surfaces are respectively fitted with screw sleeves (812). The screw sleeves (812) slide on the surface of the screw (810) through the limiting block (813) and the limiting groove (814).

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