Impact testing device for steel structural member

Abstract

The invention discloses a steel structural member impact testing device, and belongs to the field of chemical or physical analysis. Comprising a device body and a self-adjusting cooperative system carried in a device body controller, the device body is provided with a beating pendulum bob and a clamping base matched with the beating pendulum bob, a quality control assembly is arranged at the outer end of the beating pendulum bob, and a beating synchronization assembly is arranged at the lower end of the clamping base. Through the cooperation of the striking pendulum bob, the mass regulation and control assembly, the striking synchronization assembly and the self-regulation cooperation system, the high-precision regulation and control effect on the mass center position and the effective striking point position of the striking pendulum bob can be achieved in the process of regulating and controlling the mass and the arm length of the striking pendulum bob. The problems of vibration and instability of the device body caused by the change of the position of the mass center are avoided, the problem that the rotational inertia and the moving posture of the striking pendulum bob are influenced by the change of the position of the mass center is avoided, the safety is improved, meanwhile, the high precision of the striking position can be ensured, the test error caused by the error of the striking position is reduced, and the test efficiency is improved. The reliability is ensured.

Description

Technical Field

[0001] The present invention belongs to the field of chemical or physical analysis, and relates to an impact testing device, in particular to an impact testing device for steel structural parts. Background Art

[0002] The impact test of steel structural parts is a key method to evaluate their stability and safety under external impact or load. This test mainly simulates the actual impact conditions to predict the performance of steel structural parts in extreme environments, providing important basis for structural design, material selection and process planning. However, in the existing impact testing devices, the design of the pendulum is relatively simple, and its arm length and mass cannot be quickly adjusted, resulting in complex operations and limited application scope during the test process, thus reducing the test efficiency.

[0003] To solve the problem of the simple design of the pendulum, some impact testing devices in the prior art usually adopt the design of a counterweight structure and have a certain market share. Specifically as follows:

[0004] The specification of Chinese invention patent CN111089787B discloses an impact pendulum device, including a mounting seat frame, a swing arm rod and a hammer head. The swing arm rod is a telescopic rod structure. The upper end of the swing arm rod is hinged to the mounting seat frame through a hinge assembly whose hinge axis extends front and back. The lower end of the swing arm rod is coaxially connected with an adjusting flower basket bolt. The hammer head includes a base plate, several counterweight plates, an impact rod, several first connecting bolts and a spring. The top of the base plate is fixedly connected to the lower end of the adjusting flower basket bolt. The hammer head is formed by fixing a certain number of counterweight plates on the base plate through the first connecting bolts and connecting nuts. By installing different numbers of counterweight plates, the mass of the hammer head can be flexibly adjusted, realizing the free adjustment of the impact momentum; the impact seat is abutted against the rightmost counterweight plate through a spring, realizing the elastic buffer design, and the impact stiffness of the hammer head can be adjusted by replacing springs with different stiffnesses.

[0005] The specification of Chinese invention patent CN107607416B discloses a cantilever beam impact pendulum, including a pendulum suspension mechanism and a pendulum body. The pendulum suspension mechanism includes a pendulum rod, a pendulum shaft sleeved at one end of the pendulum rod and a hook on the pendulum rod. The pendulum body is a U-shaped structure. A support seat is provided at the other end of the pendulum rod, and the support seat is connected to the center of the top end of the pendulum body. Counterweight holes for assembling counterweight weights are provided at the top end and both ends of the pendulum body. The counterweight weights are attached to both ends of the pendulum body, and a support block is provided at the upper end of the counterweight weight, and the support block is connected to the counterweight hole at the top end of the pendulum body. The U-shaped structure and the arc design of the pendulum body minimize the wind resistance, thereby minimizing the energy loss of the whole machine. At the same time, in the present invention, by assembling counterweight weights with different masses and changing the pre-lift angle of the pendulum, it is convenient to change the impact energy and impact speed, meeting the use of multi-energy impacts. It has the advantages of simple structure, convenient disassembly, debugging and operation.

[0006] However, although the above-mentioned technology solves the problem of the simple design of the pendulum of the existing impact testing device and realizes the rapid adjustment of the pendulum arm length and mass. However, in actual applications, the addition of counterweights and the adjustment of the arm length will both change the position of the center of mass of the pendulum and the effective impact point, which will not only affect the moment of inertia and motion posture of the pendulum, break the overall balance of the device, cause vibration or instability, and reduce safety; but also increase the error of the performance test data of steel structure parts due to the deviation of the effective impact point position, affecting the reliability of the test results. Summary of the Invention

[0007] Aiming at the problems existing in the prior art, the technical problem to be solved by the present invention is how to ensure the accuracy of the center of mass and the position of the effective impact point while changing the arm length and mass of the pendulum, so as to ensure the stability of the device and the reliability of the test data.

[0008] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0009] An impact testing device for steel structure parts, the impact testing device for steel structure parts includes a device body and a self-adjusting cooperation system installed in the controller of the device body. The device body is provided with a striking pendulum and a clamping base that cooperates with the striking pendulum. A mass control component is arranged at the outer end of the striking pendulum, and a striking synchronization component is arranged at the lower end of the clamping base.

[0010] The self-adjusting cooperation system includes a self-adjusting cooperation processing unit. The input end of the self-adjusting cooperation processing unit is connected with a test instruction receiving unit and a test parameter setting unit. The output end of the self-adjusting cooperation processing unit is connected with a pendulum mass control unit, an arm length control unit, an impact point control unit, a data display unit and an abnormal warning unit.

[0011] The output ends of the test instruction receiving unit and the test parameter setting unit are signal-connected to the data input end arranged in the controller of the device body. The output end of the pendulum mass control unit is signal-connected to the mass control component. The arm length control unit is connected to the striking pendulum. The output end of the impact point control unit is signal-connected to the striking synchronization component. The output end of the data display unit is signal-connected to the data output end arranged in the controller of the device body. The output end of the abnormal warning unit is signal-connected to the alarm arranged on the device body.

[0012] In the above-mentioned impact testing device for steel structure parts, during the process of regulating the mass and arm length of the striking pendulum, it can realize the high-precision maintenance and regulation of the center of mass position and the effective impact point position of the pendulum, effectively improve the safety of the application of the device body, reduce the test error, fully improve the precision of the device body for testing steel structure parts, and ensure the reliability of its test data.

[0013] Further, a free-fall regulation mechanism is installed inside the device body. The upper end of the striking pendulum is fixedly connected to a rigid limiting sliding sleeve group, and the mass regulation component is arranged outside the rigid limiting sliding sleeve group. The upper end of the rigid limiting sliding sleeve group is fixedly connected to a pendulum connecting shaft, and the pendulum connecting shaft is cooperatively connected with the output shaft of the free-fall regulation mechanism. Both the lower end of the pendulum connecting shaft and the upper end of the striking pendulum are fixedly connected with arm length regulation electromagnets located inside the rigid limiting sliding sleeve group. A stabilizing spring is fixedly connected between the upper and lower arm length regulation electromagnets, and the output end of the arm length regulation unit is in signal connection with the arm length regulation electromagnets.

[0014] Further, the mass regulation component includes an upper positioning ring fixedly connected to the lower end of the pendulum connecting shaft. The lower end of the upper positioning ring is fixedly connected to an upper isolation sleeve, and the upper end of the striking pendulum is fixedly connected to a lower positioning ring. Specifically:

[0015] A plurality of counterweight rings are arranged between the upper isolation sleeve and the lower positioning ring. An interval expansion sleeve is fixedly connected between two adjacent counterweight rings. The upper end of the uppermost counterweight ring is fixedly connected to the upper isolation sleeve, and the lower end of the lowermost counterweight ring is fixedly connected to the lower positioning ring. Counterweight displacement electromagnets are fixedly connected to the adjacent ends of two adjacent counterweight rings, and the counterweight displacement electromagnets are arranged inside the interval expansion sleeve. The output end of the pendulum mass regulation unit is in signal connection with the counterweight displacement electromagnets.

[0016] Further, a striking pendulum table is fixedly installed on the lower inner wall of the device body, and a synchronization groove located in the middle of the striking pendulum table is opened on the lower inner wall of the device body. A bearing frame is fixedly connected inside the synchronization groove. A striking synchronization component is arranged on the lower inner wall of the bearing frame. The upper end of the striking synchronization component is connected to a clamping base, and the clamping base is in sliding fit with the bearing frame.

[0017] Further, the striking synchronization component includes a synchronization sleeve fixed on the lower inner wall of the bearing frame. Synchronization electromagnets are fixedly connected between the upper and lower inner walls of the synchronization sleeve. A plurality of elastic support bars are fixedly connected between the upper and lower synchronization electromagnets, and a plurality of bearing springs cooperating with the elastic support bars are also fixedly connected between the upper and lower synchronization electromagnets. The output end of the striking point regulation unit is in signal connection with the synchronization electromagnets.

[0018] Further, a partition board is fixedly connected to the upper end of the synchronization sleeve, and a clamping base is fixedly connected to the upper end of the partition board. Guide limiting grooves are opened on the front and rear inner walls of the bearing frame. Guide limiting protrusions are fixedly connected to both the front and rear ends of the partition board. The guide limiting protrusions extend into the guide limiting grooves and are in sliding fit with the guide limiting grooves.

[0019] Further, the output end of the self - regulating collaborative processing unit is also connected to a collaborative association unit. The input end of the collaborative association unit is connected to a deformation pressure acquisition unit. The input end of the deformation pressure acquisition unit is signal - connected to a pressure probe arranged at the lower end of the upper positioning ring. The output end of the deformation pressure acquisition unit is also signal - connected to the self - regulating collaborative processing unit. The input end of the collaborative association unit is also signal - connected to a pendulum mass regulation unit. The output end of the collaborative association unit is respectively signal - connected to an arm - length regulation unit and a strike - point regulation unit.

[0020] Further, the output end of the self - regulating collaborative processing unit is also connected to a cloud data collaboration unit. The output end of the cloud data collaboration unit is signal - connected to a cloud server. The input end of the collaborative association unit is also signal - connected to the cloud server.

[0021] The beneficial effects of the present invention are as follows:

[0022] Through the cooperation of the striking pendulum, the mass regulation component, the striking synchronization component and the self - regulating collaborative system, on the one hand, the present invention can realize the automatic and high - precision regulation of the mass and arm length of the striking pendulum, effectively increase the functionality of the striking pendulum, promote the applicability of the striking pendulum to steel structures with different test requirements, improve the automation of the device body, and promote the regulation accuracy and test efficiency. On the other hand, during the regulation process of the mass and arm length of the striking pendulum, it can realize the high - precision regulation of its centroid position and effective strike - point position, avoid the vibration and instability problems of the device body caused by the change of the centroid position, and avoid the problems that the change of the centroid position affects the moment of inertia and motion posture of the striking pendulum. While improving the safety of the application of the device body, it can also effectively ensure the position of the effective strike - point of the striking pendulum on the steel structure part, ensure the high precision of the striking position, reduce the test error caused by the error of the striking position, fully improve the precision of the device body for testing steel structure parts, and ensure the reliability of its test data. Description of the Drawings

[0023] Figure 1 Isometric view of the device body for the first and second embodiments of this application;

[0024] Figure 2 Control logic diagram of the self - regulating collaborative system for the first and second embodiments in the specific implementation manner;

[0025] Figure 3 Cooperating state diagram of the striking pendulum, the mass regulation component and the striking synchronization component for the first and second embodiments in the specific implementation manner;

[0026] Figure 4 Front - view sectional view of the striking pendulum under the centroid balance state for the first and second embodiments in the specific implementation manner;

[0027] Figure 5 Front elevation sectional view of the striking synchronization component in the centroid balance state of the first and second embodiments in the specific implementation manners;

[0028] Figure 6 Front elevation sectional view of the striking pendulum in the state where the centroid moves upward or the arm length extends in the first and second embodiments in the specific implementation manners;

[0029] Figure 7 Front elevation sectional view of the striking synchronization component in the state where the centroid moves upward or the arm length extends in the first and second embodiments in the specific implementation manners;

[0030] Figure 8 Front elevation sectional view of the striking pendulum in the state where the centroid moves downward or the arm length contracts in the first and second embodiments in the specific implementation manners;

[0031] Figure 9 Front elevation sectional view of the striking synchronization component in the state where the centroid moves downward or the arm length contracts in the first and second embodiments in the specific implementation manners;

[0032] Figure 10 Exploded view of the cooperation between the striking pendulum and the mass regulation component in the first and second embodiments in the specific implementation manners;

[0033] Figure 11 Front elevation partial sectional view of the device body in the first and second embodiments in the specific implementation manners.

[0034] In the figure: 1 device body, 2 striking pendulum, 3 clamping base, 4 mass regulation component, 5 load-bearing frame, 6 striking synchronization component;

[0035] 11 free-fall regulation mechanism, 12 striking table, 21 pendulum connecting shaft, 22 arm length regulation electromagnet, 23 stabilizing spring, 24 rigid limiting sliding sleeve group, 31 partition plate, 41 counterweight ring, 42 upper positioning ring, 43 lower positioning ring, 44 interval telescopic sleeve, 45 upper isolation sleeve, 46 counterweight displacement electromagnet, 61 synchronization sleeve, 62 synchronization electromagnet, 63 elastic support bar, 64 load-bearing spring. Specific implementation manners

[0036] The following describes in detail two implementation manners of the present application with reference to the accompanying drawings.

[0037] The first implementation manner:

[0038] Figure 1 - Figure 11A steel structure component impact test device is shown, which includes a device body 1 and a self-regulating collaborative system installed in the controller of the device body 1. The device body 1 is provided with a striking pendulum 2 and a clamping base 3 that cooperates with the striking pendulum 2. A mass regulation component 4 is arranged at the outer end of the striking pendulum 2, and a striking synchronization component 6 is arranged at the lower end of the clamping base 3. Specifically:

[0039] The self-regulating collaborative system includes a self-regulating collaborative processing unit. The input end of the self-regulating collaborative processing unit is connected with a test instruction receiving unit and a test parameter setting unit. The output end of the self-regulating collaborative processing unit is connected with a pendulum mass regulation unit, an arm length regulation unit, a striking point regulation unit, a data display unit, and an abnormal warning unit.

[0040] The output ends of the test instruction receiving unit and the test parameter setting unit are signal-connected to the data input end of the controller arranged in the device body 1. The input end of the controller of the device body 1 can be a control panel signal-connected to the controller, and data is input through the buttons on the control panel, or it can be a PC end signal-connected to the controller, and data is input through the mouse, USB structure, and mouse port of the PC end. The output end of the pendulum mass regulation unit is signal-connected to the mass regulation component 4. The arm length regulation unit is connected to the striking pendulum 2. The output end of the striking point regulation unit is signal-connected to the striking synchronization component 6. The output end of the data display unit is signal-connected to the data output end of the controller arranged in the device body 1. The data output end of the controller can be a control panel signal-connected to the controller, and data and status are displayed through the display and indicator lights on the control panel, or it can be a PC end signal-connected to the controller, and data and status are displayed through the display of the PC end. The output end of the abnormal warning unit is signal-connected to the alarm arranged on the device body 1. Through the cooperation of the striking pendulum 2, the mass regulation component 4, the striking synchronization component 6, and the self-regulating collaborative system, on the one hand, it can realize the automatic and high-precision regulation of the mass and arm length of the striking pendulum 2, effectively increase the functionality of the striking pendulum 2, promote the applicability of the striking pendulum 2 to steel structures with different test requirements, improve the automation of the device body 1, and promote the regulation accuracy and test efficiency. On the other hand, during the regulation of the mass and arm length of the striking pendulum 2, it can realize the high-precision regulation of its centroid position and effective striking point position, avoid problems such as the vibration and instability of the device body 1 caused by the change of the centroid position, and avoid problems such as the change of the centroid position affecting the moment of inertia and motion posture of the striking pendulum 2. While improving the safety of the application of the device body 1, it can also effectively ensure the position of the effective striking point of the striking pendulum 2 on the steel structure component, ensure the high precision of the striking position, reduce the test error caused by the error of the striking position, fully improve the precision of the device body 1 for testing steel structure components, and ensure the reliability of its test data.

[0041] Figure 1 -Figure 4 , Figure 6 , Figure 8 , Figure 10 and Figure 11 shows that a free-fall regulating mechanism 11 is installed in the device body 1. A rigid limiting sliding sleeve group 24 is fixedly connected to the upper end of the striking pendulum 2. The mass regulating assembly 4 is arranged outside the rigid limiting sliding sleeve group 24. The upper end of the rigid limiting sliding sleeve group 24 is fixedly connected to a pendulum connecting shaft 21, and the pendulum connecting shaft 21 is cooperatively connected with the output shaft of the free-fall regulating mechanism 11. Specifically:

[0042] Both the lower end of the pendulum connecting shaft 21 and the upper end of the striking pendulum 2 are fixedly connected with arm length regulating electromagnets 22 located inside the rigid limiting sliding sleeve group 24. A stabilizing spring 23 is fixedly connected between the upper and lower arm length regulating electromagnets 22. The elastic contraction of the stabilizing spring 23 can effectively support the striking pendulum 2. That is, when the striking pendulum 2 is in a state perpendicular to the ground, the pulling force of the stabilizing spring 23 on the striking pendulum 2 is greater than or equal to the gravity of the striking pendulum 2, which can effectively ensure the position of the striking pendulum 2. When the device body 1 has an abnormal power failure, it can protect the striking pendulum 2 and prevent the striking pendulum 2 from falling under its own weight and damaging other structural parts inside the device body 1, ensuring the safety of the application of the device body 1. The output end of the arm length regulating unit is signal-connected to the arm length regulating electromagnet 22. By controlling the arm length regulating electromagnet 22 through the arm length regulating unit, the regulation of the arm length of the striking pendulum 2 can be effectively realized, promoting the adjustability of the striking pendulum 2, which can effectively meet different test requirements for steel structure parts and realize the diversity of test data, thereby improving the accuracy and reliability of the test data of the device body 1. Moreover, the telescopic and rigid functions of the rigid limiting sliding sleeve group 24, while realizing the adjustable arm length of the striking pendulum 2, ensure the shape of the striking pendulum 2, and thus can ensure the effectiveness of the striking pendulum 2 in striking the steel structure parts during the application process of the striking pendulum 2.

[0043] It should be noted that the free-fall regulating mechanism 11 is the original structure of the impact test device in the prior art. Here, it is directly cited without any change to its principle and structure. The free-fall regulating mechanism 11 can regulate the swing angle of the striking pendulum 2 and can release the striking pendulum 2, so that the striking pendulum 2 can generate free fall to conduct impact tests on steel structure part samples. Those skilled in the art can select and set the free-fall regulating mechanism 11 according to actual needs, so it will not be elaborated in this embodiment.

[0044] The rigid limit sliding sleeve group 24 is an existing mechanical structure, which can realize the telescopic deformation effect in the direction of its axial line. It can be composed of multiple sections of telescopic tubes with matching outer diameters and inner diameters, or it can be composed of a pipe sleeve with slots opened at the port. Those skilled in the art can select and match according to actual conditions, so no further details are given in this embodiment. For example, the rigid limit sliding sleeve group 24 is composed of a two-section telescopic sleeve, the upper end of the telescopic sleeve located on the upper side is fixedly connected to the pendulum connecting shaft 21, and the arm length control electromagnetic block 22 located on the upper side is fixed on its inner wall, and a telescopic clearance groove is opened at the lower end of the telescopic sleeve located on the upper side, and an upper limit retaining ring is fixedly connected to the lower end of the telescopic clearance groove The lower end of the telescopic sleeve located on the lower side is fixedly connected to the striking pendulum 2, and the arm length control electromagnetic block 22 located on the lower side is fixed on its inner wall, the upper end of the telescopic sleeve located on the lower side is fixedly connected with a reducing sleeve matched with the telescopic retreat groove, and the upper end of the reducing sleeve is fixedly connected with a lower limit stop ring matched with the upper limit stop ring, the reducing sleeve is located on the inner side of the telescopic retreat groove, and is in sliding cooperation with the telescopic retreat groove; thereby, it can be effectively achieved that under the electromagnetic control of the arm length control electromagnetic block 22 by the arm length control unit, through the sliding cooperation of the telescopic sleeves on the upper and lower sides, the shape stability of the striking pendulum 2 is guaranteed while the arm length of the striking pendulum 2 is maintained to be adjustable.

[0045] Figure 1 - Figure 4 , Figure 6 , Figure 8 , Figure 10 and Figure 11 The quality control assembly 4 includes an upper positioning ring 42 fixedly connected to the lower end of the pendulum shaft 21, an upper isolation sleeve 45 fixedly connected to the lower end of the upper positioning ring 42, and a lower positioning ring 43 fixedly connected to the upper end of the striking pendulum 2. Specifically:

[0046] A plurality of counterweight rings 41 are arranged between the upper isolation sleeve 45 and the lower positioning ring 43, and a spacing telescopic sleeve 44 is fixedly connected between two adjacent counterweight rings 41. The upper end of the counterweight ring 41 located on the uppermost side is fixedly connected to the upper isolation sleeve 45, and the lower end of the counterweight ring 41 located on the lowermost side is fixedly connected to the lower positioning ring 43.

[0047] The adjacent ends of two adjacent counterweight rings 41 are fixedly connected with counterweight displacement electromagnetic blocks 46 , and the counterweight displacement electromagnetic blocks 46 are arranged inside the spacing telescopic sleeve 44 , and the output end of the pendulum mass control unit is connected to the counterweight displacement electromagnetic blocks 46 signal.

[0048] The upper positioning ring 42 and the lower positioning ring 43 are both fixedly sleeved outside the rigid limiting sliding sleeve group 24. The counterweight ring 41, the spaced telescopic sleeve 44, the upper isolation sleeve 45, and the counterweight displacement electromagnetic block 46 are all slidably sleeved outside the rigid limiting sliding sleeve group 24. When the striking pendulum 2 is at its normal arm length, multiple counterweight rings 41 are evenly distributed on the rigid limiting sliding sleeve group 24, and the upper isolation sleeve 45 maintains a semi-elastic contracted state. Through the cooperation of the pendulum mass regulation unit and the counterweight displacement electromagnetic block 46, under the limiting action of the lower counterweight ring 41, the distribution regulation of the counterweight rings 41 on the swing arm of the striking pendulum 2 can be effectively realized. When multiple counterweight rings 41 are evenly distributed on the swing arm of the striking pendulum 2, the centroid of the striking pendulum 2 is in a balanced state; when multiple counterweight rings 41 move downward, the centroid of the striking pendulum 2 moves upward, and its counterweight mass increases; when multiple counterweight rings 41 move upward, the centroid of the striking pendulum 2 moves upward, and its counterweight mass decreases. Furthermore, the self-adjusting cooperative processing unit can act on the striking pendulum 2 through the arm length regulation unit according to the regulation of the counterweight of the striking pendulum 2, so that its centroid is constantly maintained at the balance position of the device body 1. After effectively regulating the counterweight mass of the striking pendulum 2, the moment of inertia and motion posture of the striking pendulum 2 are ensured, the overall balance of the device body 1 is maintained, the situation of vibration or instability of the device body 1 is avoided, and the safety of the application of the device body 1 is promoted.

[0049] Figure 1 - Figure 3 and Figure 11 It is shown that a striking table 12 is fixedly installed on the lower inner wall of the device body 1. A synchronous groove is formed in the lower inner wall of the device body 1 at the middle of the striking table 12. A bearing frame 5 is fixedly connected in the synchronous groove. A striking synchronization assembly 6 is arranged on the lower inner wall of the bearing frame 5. The upper end of the striking synchronization assembly 6 is connected with a clamping base 3, and the clamping base 3 is in sliding fit with the bearing frame 5. The settings of the bearing frame 5 and the synchronous groove can effectively ensure the stability of the clamping base 3, limit the degrees of freedom of the clamping base 3, enable it to be driven up and down by the striking synchronization assembly 6, and play a cooperative regulation role on the effective striking point position while ensuring the stability of the clamping of the steel structure member. Furthermore, when the striking pendulum 2 strikes the steel structure member installed on its upper side, the effectiveness of the clamping position is ensured, and the test error caused by the instability of the clamping is avoided.

[0050] It should be noted that the staff can install a clamping mechanism adapted to the clamping base 3 on the clamping base 3 and use the clamping mechanism to clamp the processed steel structure sample to be tested. Here, the clamping mechanism is an existing mechanical structure, which can be a pneumatic clamping seat or a clamping structure such as a vise. This embodiment is a direct reference to it, and no changes are made to the principle and structural composition. Those skilled in the art can select the clamping mechanism according to actual needs, so no more details will be described here.

[0051] Figure 1 - Figure 3 、 Figure 5 、 Figure 7 and Figure 9 - Figure 11 The striking synchronization component 6 is shown to include a synchronization sleeve 61 fixed to the lower inner wall of the load-bearing frame 5. Synchronization electromagnets 62 are fixedly connected between the upper and lower inner walls of the synchronization sleeve 61. A plurality of elastic support bars 63 are fixedly connected between the upper and lower synchronization electromagnets 62. A plurality of load-bearing springs 64 that cooperate with the elastic support bars 63 are also fixedly connected between the upper and lower synchronization electromagnets 62. The load-bearing springs 64 are slidably sleeved on the outer sides of the elastic support bars 63 at corresponding positions. The output end of the striking point control unit is signal-connected to the synchronization electromagnets 62. Through the control of the synchronization electromagnets 62 by the striking point control unit, it is possible to effectively achieve the applicability of the effective striking point position after the change of the extension arm length of the striking pendulum 2, thereby ensuring the effectiveness of the striking of the steel structure member by the striking pendulum 2, reducing the test error, and improving the test accuracy of the device body 1. And through the cooperation of the self-adjusting collaborative processing unit, while realizing the collaborative effect of the pendulum mass control unit and the arm length control unit, it is possible to ensure the high-precision centroid position of the striking pendulum 2, and at the same time, it realizes the collaborative effect of the pendulum mass control unit, the arm length control unit and the striking point control unit, which can ensure the high-precision position of the effective striking point of the striking pendulum 2, ensure the effectiveness of the strike, and thus effectively ensure the test effectiveness of the device body 1 and improve the reliability of the test data of the device body 1. Moreover, the cooperation of the elastic support bars 63 and the load-bearing springs 64 can effectively assist in enhancing the support of the synchronization sleeve 61 for the clamping base 3 and the clamping mechanism installed on the upper end of the clamping base 3, thereby ensuring the stability and effectiveness of the clamping position.

[0052] Figure 1 - Figure 3 、 Figure 5 、 Figure 7 and Figure 9 - Figure 11 It is shown that a partition plate 31 is fixedly connected to the upper end of the synchronization sleeve 61, and a clamping base 3 is fixedly connected to the upper end of the partition plate 31. Guide limit grooves are provided on the front and rear inner walls of the load-bearing frame 5. Guide limit protrusions are fixedly connected to both the front and rear ends of the partition plate 31. The guide limit protrusions extend into the guide limit grooves and are in sliding fit with the guide limit grooves. Through the cooperation of the partition plate 31 and the load-bearing frame 5, while realizing the linkage effect of the striking synchronization component 6 on the clamping base 3, it can also effectively ensure the stability of the clamping base 3, and further ensure the data effectiveness of the impact test of the device body 1 on the steel structure member.

[0053] Figure 1 - Figure 11It is shown that during the process of keeping the device body 1 powered on, the self-regulating collaborative processing unit can control the arm length regulating electromagnet block 22 through the arm length regulating unit, so that there is an electromagnetic attraction effect under a constant current between the upper and lower arm length regulating electromagnet blocks 22, generating a certain contraction control on the stable spring 23, maintaining the arm length stability of the striking pendulum 2 at this time, and further being able to ensure the effectiveness of the moment of inertia and the motion posture of the striking pendulum 2 during the subsequent application of the device body 1; the pendulum mass regulating unit exerts an electromagnetic regulation effect on the counterweight displacement electromagnet block 46, so that there is a repulsive electromagnetic effect between two adjacent counterweight displacement electromagnet blocks 46, separating and supporting the counterweight ring 41, so that multiple counterweight rings 41 can be evenly distributed at the outer end of the rigid limit sliding sleeve group 24, ensuring the centroid balance effect on the rigid limit sliding sleeve group 24 and the striking pendulum 2 at this time; at this time, the strike point regulating unit will exert a regulating effect on the synchronous electromagnet block 62 that is coordinated with the arm length regulating unit. The strike point regulating unit controls the electromagnetic attraction effect under a constant current between the two synchronous electromagnet blocks 62, so that the synchronous electromagnet block 62 can drive the synchronous sleeve 61 to generate a certain contraction effect, driving the clamping base 3 to move downward through the partition plate 31, and further enabling the position of the steel structure sample to be tested installed on the upper end of the clamping base 3 by the clamping mechanism to be consistent with the effective strike point position of the striking pendulum 2 in the subsequent process, ensuring the striking effectiveness and precision of the striking pendulum 2, and promoting the test precision.

[0054] Before the application of the device body 1, the staff inputs relevant parameters for this test to the test parameter setting unit through the data input end of the device body 1 controller according to the requirements of the steel structure to be subjected to the impact test. These parameters include but are not limited to the mass data, arm length data, swing angle, standard range value of the centroid balance position, rated arm length adjustment value, rated mass regulation value, and effective strike point position of the striking pendulum 2, etc. The test parameter setting unit converts these parameters and transmits them to the self-regulating collaborative processing unit. The self-regulating collaborative processing unit processes and judges the received data, and then regulates the striking pendulum 2 according to the parameter data.

[0055] When there is no need to adjust the arm length and mass of the striking pendulum 2, the test is carried out while maintaining the centroid balance state of the striking pendulum 2 at this time. Then, the self-adjusting cooperative processing unit does not generate a control instruction, and outputs the data indicating that the striking pendulum 2 is ready through the data display unit to the data output end of the controller of the device body 1, facilitating the staff to obtain the preparation state of the striking pendulum 2. Then, the staff clamps the steel structure sample to be tested on the upper end of the clamping base 3 through the clamping mechanism, closes the operation door of the device body 1, and inputs a test instruction through the data input end of the controller of the device body 1. When the device body 1 receives the test instruction and controls the free-fall regulating mechanism 11 to conduct the test, the test instruction receiving unit easily receives the instruction data and transmits it to the self-adjusting cooperative processing unit, enabling the self-adjusting cooperative processing unit to maintain the arm length and mass of the striking pendulum 2 at this time, as well as the clamping height of the clamping base 3 through the action of the pendulum mass regulating unit and the arm length regulating unit, so that the effective striking point position of the striking pendulum 2 can effectively adapt to the steel structure sample to be tested. The self-adjusting cooperative processing unit also displays the state of the striking pendulum 2 at this time in real time to the data output end of the controller of the device body 1 through the data display unit. Then, the controller of the device body 1 controls the free-fall regulating mechanism 11 to drive the striking pendulum 2 to a suitable height and then releases the striking pendulum 2, so that the striking pendulum 2 impacts the steel structure sample in a free-fall manner. The controller analyzes the ability of the steel structure sample to resist impact damage based on the change in kinetic energy or potential energy before and after the impact of the striking pendulum 2, and then displays and outputs it through its data output end.

[0056] When it is necessary to adjust the arm length of the striking pendulum 2, the self-adjusting cooperative processing unit issues a control instruction to the arm length regulating unit, enabling the arm length regulating unit to change the electromagnetic action of the two arm length regulating electromagnets 22 by changing the current direction or the current magnitude in the arm length regulating electromagnet 22. When it is necessary to shorten the arm length of the striking pendulum 2, the current flowing into the arm length regulating electromagnet 22 is increased, and then, by increasing the electromagnetic force of mutual attraction between the two arm length regulating electromagnets 22, the two arm length regulating electromagnets 22 continue to attract each other, driving the striking pendulum 2 to move upward and the stabilizing spring 23 to contract, thereby achieving the effect of shortening the arm length of the striking pendulum 2. When it is necessary to extend the arm length of the striking pendulum 2, the current direction in the arm length regulating electromagnet 22 is changed, causing a repulsive electromagnetic force to be generated between the two arm length regulating electromagnets 22. The repulsive electromagnetic force causes the two arm length regulating electromagnets 22 to move away from each other, driving the striking pendulum 2 to move downward and the stabilizing spring 23 to elongate, thereby achieving the effect of extending the arm length of the striking pendulum 2.

[0057] After the arm length of the striking pendulum 2 changes, when the striking pendulum 2 moves upward and its arm length shortens, the position of the effective striking point of the striking pendulum 2 rises. When the striking pendulum 2 moves downward and its arm length extends, the position of the effective striking point of the striking pendulum 2 drops. Therefore, the self-adjusting collaborative processing unit judges the change data of the position of the effective striking point of the striking pendulum 2 according to the data of the arm length to be adjusted as needed, and then transmits a control instruction to the striking point control unit, so that the striking point control unit regulates the magnitude or direction of the current flowing into the synchronous electromagnet block 62. When the arm length of the striking pendulum 2 shortens and the position of its effective striking point rises, the direction of the current flowing into the synchronous electromagnet block 62 is changed, so that the two synchronous electromagnet blocks 62 generate a repulsive electromagnetic effect, and then the two synchronous electromagnet blocks 62 move away from each other, prompting the synchronous sleeve 61 to generate an upward deformation effect, and then driving the clamping base 3 to move upward through the partition plate 31, so as to be able to adjust the steel structure part sample clamped on the upper side of the clamping base 3 upward, so that it can be consistent with the position of the effective striking point of the striking pendulum 2, thereby ensuring the effectiveness of the striking test. When the arm length of the striking pendulum 2 extends and the position of its effective striking point drops, the current flowing into the synchronous electromagnet block 62 is increased, so that the electromagnetic adsorption effect between the two synchronous electromagnet blocks 62 is increased, driving the synchronous sleeve 61 to generate a further downward contraction effect, driving the clamping base 3 to move downward through the partition plate 31, so as to be able to adjust the steel structure part sample clamped on the upper side of the clamping base 3 downward, so that it can be consistent with the position of the effective striking point of the striking pendulum 2, thereby ensuring the effectiveness of the striking test. After the regulation is completed, the self-adjusting collaborative processing unit transmits the completion data to the data output end of the controller of the device body 1 through the data display unit. Then, through the foregoing content, the steel structure sample to be tested is clamped and subjected to an impact test.

[0058] When it is necessary to adjust the mass of the striking pendulum 2, the self-adjusting cooperative processing unit transmits data to the pendulum mass adjustment unit according to the parameters of the mass adjustment. When it is necessary to increase the mass of the striking pendulum 2, the current direction between the adjacent counterweight displacement electromagnets 46 is changed, so that an attractive electromagnetic force is generated. Through the electromagnetic attraction between the adjacent two counterweight displacement electromagnets 46, and the lowermost counterweight ring 41 is fixedly arranged on the striking pendulum 2 through the lower positioning ring 43, so that the plurality of counterweight rings 41 gradually move downward under the action of the attractive electromagnetic force, concentrate near the striking pendulum 2, and exert a tensile effect on the upper isolation sleeve 45. The downward movement of the plurality of counterweight rings 41 makes their main mass act on the striking pendulum 2, which can increase the mass of the striking pendulum 2. When it is necessary to reduce the mass of the striking pendulum 2, the attractive electromagnetic force is generated between the two adjacent counterweight displacement electromagnets 46 located on the upper side to make them drive the upper counterweight ring 41 to approach. Then, the counterweight displacement electromagnet 46 cooperating with the lowermost counterweight ring 41 is controlled to change the current direction flowing into it, so as to generate a repulsive electromagnetic effect on the other counterweight displacement electromagnet 46 cooperating with it, and push the remaining counterweight rings 41 above the lowermost counterweight ring 41 to move upward, and make the upper isolation sleeve 45 contract. After the plurality of counterweight rings 41 located on the upper side move upward on the rigid limit sliding sleeve group 24, they reduce the mass of the striking pendulum 2.

[0059] When the mass of the striking pendulum 2 increases, the centroid of the striking pendulum 2 will move upward; when the mass of the striking pendulum 2 decreases, the centroid of the striking pendulum 2 will move downward. Furthermore, the self-adjusting cooperative processing unit will judge the data of the centroid movement according to the data of the mass adjustment of the striking pendulum 2, and judge whether the centroid position movement is outside the area of the centroid balance standard range value. When it is judged that the centroid position is still within the area of the centroid balance standard range value, no adjustment action will be generated.

[0060] After determining the area where the centroid position exceeds the centroid balance standard range value, in order to ensure the overall stability of the device body 1, the self-adjusting collaborative processing unit needs to adjust the position of the centroid of the striking pendulum 2 on the device body 1 within a certain range to ensure that it is within the balance range of the device body 1 and avoid vibrations and instability caused by the offset of the centroid position. Therefore, the self-adjusting collaborative processing unit will transmit the collaborative adjustment data to the arm length adjustment unit, so that the arm length adjustment unit adjusts the arm length of the striking pendulum 2 according to the data that the centroid offset position exceeds the balance range standard value. By adjusting the arm length of the striking pendulum 2, the centroid position of the striking pendulum 2 is restored. Therefore, when the mass of the striking pendulum 2 increases and its centroid moves upward, the arm length of the striking pendulum 2 is controlled to extend, driving the centroid of the striking pendulum 2 to move downward to restore it to the centroid balance standard range. When the mass of the striking pendulum 2 decreases and its centroid moves downward, the arm length of the striking pendulum 2 is controlled to shorten, driving the centroid of the striking pendulum 2 to move upward to restore it to the centroid balance standard range. In this way, during the subsequent action of the striking pendulum 2, the overall balance of the device body 1 is promoted, and the safety of the application of the device body 1 is improved; then, according to the adjustment data of the arm length of the striking pendulum 2, the self-adjusting collaborative processing unit controls the synchronous electromagnetic block 62 through the striking point adjustment unit, so that it can drive the clamping base 3 to produce a synchronous moving effect to ensure the consistency between the position of the steel structure sample and the effective striking point position of the striking pendulum 2, ensure the effectiveness of the striking of the striking pendulum 2, improve the test accuracy of the device body 1, and ensure the reliability of the test data.

[0061] After the adjustment is completed, the self-adjusting collaborative processing unit transmits the completion data to the data output end of the controller of the device body 1 through the data display unit. Then, through the above content, the steel structure sample to be tested is clamped and subjected to an impact test.

[0062] During the process of the self-adjusting collaborative processing unit controlling the pendulum mass adjustment unit, the arm length adjustment unit and the striking point adjustment unit respectively, the self-adjusting collaborative processing unit can judge them according to the parameters to be adjusted, and judge whether the adjustment parameters are within the adjustment range of the device body 1. When the test parameters exceed the adjustment range, the self-adjusting collaborative processing unit can transmit the abnormal data to the abnormal warning unit, so that the abnormal warning unit activates the alarm to remind the staff to check the effectiveness of the test parameter settings.

[0063] In addition, it should be noted that those skilled in the art can also set feedback sensors on the device body 1, the striking pendulum 2, the mass regulation component 4, and the striking synchronization component 6 according to actual needs, and feedback verify the regulation effectiveness of the pendulum mass regulation unit, the arm length regulation unit, and the striking point regulation unit on the striking pendulum 2, the mass regulation component 4, and the striking synchronization component 6 respectively, so as to ensure the effectiveness of the execution of the regulation instructions and the effectiveness and safety of the regulation. Here, the feedback sensor can be an image collector, an infrared distance measuring probe set on the device body 1, or pressure sensors respectively set in the rigid limiting sliding sleeve group 24, the spaced telescopic sleeve 44, and the synchronization sleeve 61, etc., to collect and feedback data on the position of the striking pendulum 2, the shape of the counterweight ring 41, and the position of the clamping base 3, so as to ensure the continuous safety and effectiveness of the regulation effect. An expansion port is also provided on the self-adjusting collaborative processing unit, which can expand the data acquisition unit according to needs, so as to ensure the expandability of the subsequent self-adjusting collaborative system, enhance its high applicability, and meet different market demands. Those skilled in the art can select and configure according to actual needs, while ensuring the economy of the device body 1, promoting the safety and effectiveness of the application of the device body 1.

[0064] The second implementation mode:

[0065] Figure 1 - Figure 11 The steel structure component impact test device is shown. The output end of the self-adjusting collaborative processing unit is also connected with a collaborative association unit. The input end of the collaborative association unit is connected with a deformation pressure acquisition unit. The input end of the deformation pressure acquisition unit is signal-connected to a pressure probe arranged at the lower end of the upper positioning ring 42. The output end of the deformation pressure acquisition unit is also signal-connected to the self-adjusting collaborative processing unit.

[0066] When a pressure probe is arranged at the lower end of the upper positioning ring 42, the counterweight ring 41 located below the upper isolation sleeve 45 forms a sealed sliding fit with the rigid limiting sliding sleeve group 24. Furthermore, it can be ensured that a sealed space can be formed among the upper isolation sleeve 45, the upper positioning ring 42, the counterweight ring 41 located below the upper isolation sleeve 45, and the rigid limiting sliding sleeve group 24. Furthermore, when the upper isolation sleeve 45 deforms, the pressure inside it will change, enabling the deformation pressure acquisition unit to obtain the deformation data of the upper isolation sleeve 45 according to the data transmitted by the pressure probe.

[0067] When adjusting the arm length of the striking pendulum 2, when the arm length of the striking pendulum 2 is extended, due to the downward movement of the striking pendulum 2 and the stable electromagnetic force between multiple counterweight displacement electromagnetic blocks 46, during the downward movement of the striking pendulum 2, the spacer telescopic sleeve 44 will not deform. Furthermore, through the action of the counterweight ring 41 and the spacer telescopic sleeve 44, the upper isolation sleeve 45 will be restored to its original shape, releasing the pressure inside the upper isolation sleeve 45, enabling the deformation pressure acquisition unit to obtain data on the decreasing pressure through the pressure probe. When the arm length of the striking pendulum 2 is shortened, due to the upward movement of the striking pendulum 2 and the upward movement of multiple counterweight rings 41 and the spacer telescopic sleeve 44, the upper isolation sleeve 45 will be continuously squeezed, causing it to continue to contract and deform, enabling the deformation pressure acquisition unit to obtain data on the increasing pressure through the pressure probe.

[0068] The input end of the cooperative correlation unit is signal-connected to the pendulum mass adjustment unit, and the output end of the cooperative correlation unit is respectively signal-connected to the arm length adjustment unit and the striking point adjustment unit. The cooperation between the cooperative correlation unit and the deformation pressure acquisition unit can directly connect to the arm length adjustment unit or the striking point adjustment unit according to the adjustment data of the mass or arm length of the striking pendulum 2, reducing the operation and processing process of the data passing through the self-adjusting cooperative processing unit, achieving the high efficiency of the cooperation between the arm length adjustment unit and the striking point adjustment unit, or between the pendulum mass adjustment unit, the arm length adjustment unit, and the striking point adjustment unit, further promoting the automation and intelligence level of the device body 1, promoting the application of the device body 1 in the market, and promoting the economy of the device body 1.

[0069] Figure 2 It shows that the output end of the self-adjusting cooperative processing unit is also connected to the cloud data cooperation unit, the output end of the cloud data cooperation unit is signal-connected to the cloud server, and the input end of the cooperative correlation unit is also signal-connected to the cloud server. Through the cooperation of the cloud data cooperation unit and the cloud server, the application data and coordination data of each device body 1 can be statistically analyzed and sorted, and then accurate and effective cooperation data can be formed, further ensuring the effectiveness and accuracy of the direct connection function of the cooperative correlation unit, reducing the R & D and investment costs during the subsequent continuous application of the device body 1, realizing the cyclic and self-learning functions of the cooperative action of the device body 1, thereby enhancing the functionality of the device body 1 and making it more suitable for market demand.

[0070] Figure 1 - Figure 11During the continuous application and testing of the device body 1, the self-regulating cooperative processing unit can summarize the data according to the data of the device body 1 with different parameters applied thereto. The summarized data includes, but is not limited to, the current direction and magnitude on the arm length regulation electromagnet 22 during the process of regulating the arm length of the striking pendulum 2, and the current direction and magnitude data of the synchronous electromagnet 62 corresponding to the data thereof, for the device body 1 of this parameter type; during the process of regulating the mass of the striking pendulum 2, the mass regulation data value range within which the centroid movement does not exceed the centroid balance standard range value area, the control effect on each counterweight displacement electromagnet 46, and the relevant data of the current magnitude and direction therein; during the process of regulating the mass of the striking pendulum 2, the mass bar regulation data value range within which the centroid movement exceeds the centroid balance standard range value area, the control effect on each counterweight displacement electromagnet 46, the relevant data of the current magnitude and direction within each counterweight displacement electromagnet 46, and the regulation data of the current magnitude and direction of the corresponding arm length regulation electromagnet 22 and synchronous sleeve 61.

[0071] Then these data are synchronously transmitted to the cloud data cooperation unit, enabling the remote data cooperation unit to store and summarize these data in the cloud server. After the cloud server processes and summarizes these data, it transmits the data to the cooperation association unit. Then, when the subsequent self-regulating cooperative processing unit receiving unit receives the regulation parameters of the striking pendulum 2, it can directly activate the cooperation association unit, enabling it to directly perform direct connection regulation on the arm length regulation unit and the strike point regulation unit according to the relevant data.

[0072] When it is necessary to regulate the arm length of the striking pendulum 2, the cooperation association unit can directly act on the arm length regulation unit and the strike point regulation unit, causing them to produce a coordinated direct connection effect. When a regulation effect is generated on the arm length regulation unit, the strike point regulation unit produces a consistent regulation effect, thereby effectively reducing the computing burden of the self-regulating cooperative processing unit, shortening the data processing time, improving the regulation efficiency of the arm length of the striking pendulum 2, and judging the deformation state of the upper isolation sleeve 45 according to the data on the pressure change within the upper isolation sleeve 45 transmitted by the deformation pressure acquisition unit, so as to effectively obtain the regulation data for regulating the arm length of the striking pendulum 2. At the same time, the deformation pressure acquisition unit also transmits the data to the self-regulating cooperative processing unit, enabling the self-regulating cooperative unit to judge the effectiveness of the action of the cooperation association unit according to the feedback of the deformation data.

[0073] When it is necessary to adjust the mass of the striking pendulum 2, the self-adjusting collaborative processing unit controls the pendulum mass adjustment unit. The collaborative association unit judges whether it is necessary to directly control the arm length adjustment unit and the striking point adjustment unit through the data feedback of the pendulum mass adjustment unit. When it is judged that there is no need, no action is generated. When it is judged that it is necessary, the arm length adjustment unit and the striking point adjustment unit are directly connected to adjust the arm length of the striking pendulum 2 to ensure the balance of the centroid position, and the position of the clamping base 3 is adjusted consistently to ensure the accuracy of the effective striking point position. Then, according to the data about the pressure change in the upper isolation sleeve 45 transmitted by the deformation pressure acquisition unit, the deformation state of the upper isolation sleeve 45 is judged, so as to effectively obtain the adjustment data for the arm length adjustment of the striking pendulum 2. At the same time, the deformation pressure acquisition unit also transmits the data to the self-adjusting collaborative processing unit, so that the self-adjusting collaborative unit can judge the effectiveness of the action of the collaborative association unit according to the feedback of the deformation data. The high efficiency of the collaboration between the arm length adjustment unit and the striking point adjustment unit, or between the pendulum mass adjustment unit, the arm length adjustment unit and the striking point adjustment unit is effectively realized, further promoting the automation and intelligent level of the device body 1 and promoting the application of the device body 1 in the market.

[0074] The above embodiments only represent the implementation modes of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A steel structure impact test device, characterized in that: The steel structure impact testing device comprises a device body (1) and a self-adjusting coordination system mounted in a controller of the device body (1); the device body (1) is provided with a striking pendulum (2) and a clamping base (3) matched with the striking pendulum (2); a mass control component (4) is provided at the outer end of the striking pendulum (2); and a striking synchronization component (6) is provided at the lower end of the clamping base (3); The self-adjusting collaborative system includes a self-adjusting collaborative processing unit, the input end of the self-adjusting collaborative processing unit is connected to a test instruction receiving unit and a test parameter setting unit, and the output end of the self-adjusting collaborative processing unit is connected to a pendulum mass control unit, an arm length control unit, a striking point control unit, a data display unit and an abnormal warning unit; The output ends of the test instruction receiving unit and the test parameter setting unit are signal-connected to the data input end of the controller of the device body (1); the output end of the pendulum quality control unit is signal-connected to the quality control component (4); the arm length control unit is signal-connected to the striking pendulum (2); the output end of the striking point control unit is signal-connected to the striking synchronization component (6); the output end of the data display unit is signal-connected to the data output end of the controller of the device body (1); and the output end of the abnormal warning unit is signal-connected to the alarm provided on the device body (1).

2. The impact testing device for steel structure according to claim 1, characterized in that: A free-fall regulating mechanism (11) is installed in the device body (1); the upper end of the striking pendulum (2) is fixedly connected to a rigid limit sliding sleeve group (24); the mass regulating component (4) is arranged outside the rigid limit sliding sleeve group (24); the upper end of the rigid limit sliding sleeve group (24) is fixedly connected to a pendulum coupling shaft (21); and the pendulum coupling shaft (21) is matched and connected to an output shaft of the free-fall regulating mechanism (11); The lower end of the pendulum coupling shaft (21) and the upper end of the striking pendulum (2) are both fixedly connected to an arm length regulating electromagnetic block (22) located in a rigid limit sliding sleeve group (24); a stabilizing spring (23) is fixedly connected between the upper and lower arm length regulating electromagnetic blocks (22); and the output end of the arm length regulating unit is signal-connected to the arm length regulating electromagnetic block (22).

3. The steel structure impact testing device according to claim 2, characterized in that: The mass control component (4) comprises an upper positioning ring (42) fixedly connected to the lower end of the pendulum coupling shaft (21), an upper isolation sleeve (45) fixedly connected to the lower end of the upper positioning ring (42), and a lower positioning ring (43) fixedly connected to the upper end of the striking pendulum (2); A plurality of counterweight rings (41) are arranged between the upper isolating sleeve (45) and the lower positioning ring (43); a spacing telescopic sleeve (44) is fixedly connected between two adjacent counterweight rings (41); the upper end of the counterweight ring (41) located at the uppermost side is fixedly connected to the upper isolating sleeve (45), and the lower end of the counterweight ring (41) located at the lowermost side is fixedly connected to the lower positioning ring (43); Two adjacent counterweight rings (41) are fixedly connected to a counterweight displacement electromagnetic block (46) at one end thereof, and the counterweight displacement electromagnetic block (46) is arranged inside the spacing telescopic sleeve (44), and the output end of the pendulum mass control unit is signal-connected to the counterweight displacement electromagnetic block (46).

4. The steel structure impact testing device according to claim 3, characterized in that: The output end of the self-adjusting collaborative processing unit is also connected to a collaborative association unit, the input end of the collaborative association unit is connected to a deformation pressure acquisition unit, the input end of the deformation pressure acquisition unit is signal-connected to a pressure probe arranged at the lower end of the upper positioning ring (42), and the output end of the deformation pressure acquisition unit is signal-connected to the self-adjusting collaborative processing unit; The input end of the collaborative association unit is also connected to the pendulum mass control unit signal, and the output end of the collaborative association unit is respectively connected to the arm length control unit and the striking point control unit signal.

5. The steel structure impact testing device according to claim 4, characterized in that: The output end of the self-adjusting collaborative processing unit is also connected to a cloud data collaborative unit, the output end of the cloud data collaborative unit is connected to a cloud server signal, and the input end of the collaborative association unit is also connected to a cloud server signal.

6. The steel structure impact testing device according to claim 1, characterized in that: A striking platform (12) is fixedly mounted on the lower inner wall of the device body (1); a synchronization groove is provided on the lower inner wall of the device body (1) and is located in the middle of the striking platform (12); a load-bearing frame (5) is fixedly connected in the synchronization groove; a striking synchronization component (6) is provided on the lower inner wall of the load-bearing frame (5); a clamping base (3) is connected to the upper end of the striking synchronization component (6); and the clamping base (3) and the load-bearing frame (5) are in sliding cooperation.

7. The steel structure impact testing device according to claim 6, characterized in that: The striking synchronization component (6) comprises a synchronization sleeve (61) fixed to the lower inner wall of the load-bearing frame (5); a synchronization electromagnetic block (62) is fixedly connected between the upper and lower inner walls of the synchronization sleeve (61); a plurality of elastic support strips (63) are fixedly connected between the upper and lower synchronization electromagnetic blocks (62); and a plurality of load-bearing springs (64) matching the elastic support strips (63) are also fixedly connected between the upper and lower synchronization electromagnetic blocks (62).

8. The steel structure impact testing device according to claim 7, characterized in that: The output end of the striking point regulating unit is connected to the synchronous electromagnetic block (62) by signal.

9. The steel structure impact testing device according to claim 7, characterized in that: The upper end of the synchronous sleeve (61) is fixedly connected to a partition plate (31), and the upper end of the partition plate (31) is fixedly connected to a clamping base (3).

10. The steel structure impact testing device according to claim 9, characterized in that: The front and rear inner walls of the load-bearing frame (5) are both provided with guide limit grooves, and the front and rear ends of the partition plate (31) are both fixedly connected with guide limit protrusions, and the guide limit protrusions extend into the guide limit grooves and are in sliding engagement with the guide limit grooves.

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