Anti-vibration support and hanger fatigue performance testing machine

Abstract

The utility model discloses an anti -seismic support hanger fatigue performance testing machine relates to fatigue test technical field. Including drive source, be used for to two opposite axial direction apply thrust, and drive source passes through the installation electromagnetic attraction half frame in two axial directions, so that the electromagnetic detection probe in the electromagnetic attraction half frame through the magnetic force adsorption, can move along the axial direction in two electromagnetic attraction half frame, the top surface of electromagnetic detection probe is used to lay with the lip sealant. The utility model discloses a deformation observation mode of two -way electromagnetic drive structure cooperation lip sealant, has realized the non -destructive testing to the fatigue damage of anti -seismic support hanger, wherein the synergic effect of electric two -way push rod and electromagnetic attraction half frame can control the axial displacement of detection probe, and the lower force handle of normal direction setting forms three -dimensional mechanics balance structure with the axial handle frame, effectively eliminates the lateral deviation error of producing in the testing process.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology, specifically to a fatigue performance testing machine for seismic bracing and hangers. Background Technology

[0002] The seismic bracing fatigue performance testing machine is a specialized device used to evaluate the structural integrity of building support systems under long-term cyclic loading.

[0003] A search revealed Chinese utility model patent publication number "CN214952063U," which discloses a "fatigue performance testing machine for seismic bracing." This machine features an L-shaped vertical support frame and a horizontal support frame mounted on a base plate, with a vertical loading bracket inserted into the L-shaped vertical support frame. This application utilizes a rotatable exciter capable of vertical and horizontal movement. When testing the seismic performance of transverse and longitudinal test specimens, only the exciter needs to be rotated. Furthermore, the combination of the loading bracket and force sensor enables real-time data measurement during the test and facilitates the generation of test reports. Finally, the specimen mounting frame allows for the testing of both transverse and longitudinal test specimens using a single loading system.

[0004] However, in actual use, although the multi-degree-of-freedom adjustment mechanism of the exciter improves the detection orientation coverage, the device disclosed above is prone to mechanical resonance during axial reciprocating motion, which causes phase drift in the amplitude data collected by the displacement sensor. Secondly, the rigid connection of the specimen mounting frame makes it easy to form stress concentration areas under alternating loads, causing early fatigue damage in the non-test areas of the specimen. Utility Model Content

[0005] The purpose of this invention is to provide a fatigue performance testing machine for seismic bracing and hangers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fatigue performance testing machine for seismic bracing and hangers, comprising:

[0007] The driving source is used to apply thrust in two opposite axial directions. The driving source installs electromagnetic suction half-frames in two axial directions, so that the electromagnetic detection probes attracted by magnetic force in the electromagnetic suction half-frames can move along the axial direction in the two electromagnetic suction half-frames.

[0008] The top surface of the electromagnetic detection probe is covered with grease sealant. When the top surface of the electromagnetic detection probe comes into contact with the seismic support, the electromagnetic detection probe is moved axially by the drive source. The integrity of the grease sealant surface is observed to determine whether there is a fatigue gap at the contact position between the seismic support and the top surface of the electromagnetic detection probe.

[0009] Furthermore, the driving source is an electric bidirectional push rod, and the open ends of the two electromagnetic suction half-frames are respectively fixed at both ends of the axial outer surface of the electric bidirectional push rod. The telescopic rod body of the electric bidirectional push rod and the center position of the outer surface of the electromagnetic detection probe are fixed.

[0010] Furthermore, a battery compartment is provided at one end of the surface of the electric bidirectional push rod for storing batteries, and an external power supply is installed at the top of the surface of the electromagnetic suction half-frame. The external power supply and the power supply in the battery compartment form a parallel circuit.

[0011] Furthermore, a Hall current sensor is installed in the parallel circuit, and the Hall current sensor is integrated into the housing of the electric bidirectional push rod by an embedded mounting method.

[0012] Furthermore, a downward force-bearing handle is fixed to the bottom of the surface of the electric bidirectional push rod, and a gripping frame is fixed to the top of the surface of the electric bidirectional push rod, which is oriented in the axial direction.

[0013] Furthermore, a trigger switch is fixed to the top of the surface of the electric bidirectional push rod, and the trigger switch is used to control the operation of the electric bidirectional push rod and the electromagnetic suction half frame.

[0014] Furthermore, the control end of the trigger switch is provided with an anti-slip pressing block, and the surface of the anti-slip pressing block is provided with a wavy anti-slip texture.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This seismic bracing fatigue performance testing machine achieves non-destructive testing of seismic bracing fatigue damage by adopting a bidirectional electromagnetic drive structure combined with a deformation observation method using grease sealant. The synergistic effect of the electric bidirectional push rod and the electromagnetic suction half-frame can control the axial displacement of the test probe. The downward force-bearing handle set in the normal direction and the axial force-bearing frame form a three-dimensional mechanical balance structure, effectively eliminating the lateral offset error generated during the test.

[0017] In addition, the parallel power supply system, together with the embedded Hall current sensor, can monitor the electromagnetic attraction force fluctuation data in real time. Combined with the anti-slip pressing design of the trigger switch, it not only ensures operational safety but also improves the repeatability of test parameters. Attached Figure Description

[0018] Figure 1 This is an isometric drawing of the present invention;

[0019] Figure 2 This is a diagram showing the bottom structure of this utility model;

[0020] Figure 3 This is the main cross-sectional view of the present invention.

[0021] In the diagram: 1. Electric bidirectional push rod; 2. Lower force-bearing grip; 3. Electromagnetic suction half-frame; 4. Battery compartment; 5. Electromagnetic detection probe; 6. External power supply; 7. Trigger switch; 8. Grip frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-3 As shown, this utility model provides a technical solution: a fatigue performance testing machine for seismic bracing and hangers, comprising the following key components:

[0024] First, the drive source is the core component of the entire testing machine. Its main function is to apply thrust in two opposite axial directions. To achieve this function, the drive source installs electromagnetic suction half-frames 3 in two axial directions, so that the electromagnetic detection probes 5, which are magnetically attracted within the electromagnetic suction half-frames 3, can move smoothly along the axial direction within the two electromagnetic suction half-frames 3.

[0025] Specifically, in this application, the top surface of the electromagnetic detection probe 5 is specifically designed to be covered with a layer of grease sealant. When the top surface of the electromagnetic detection probe 5 comes into contact with the seismic bracing, the electromagnetic detection probe 5 will move axially with the action of the drive source. At this time, by carefully observing the integrity of the grease sealant surface, it is possible to accurately determine whether there is a fatigue gap at the contact point between the seismic bracing and the top surface of the electromagnetic detection probe 5, thereby evaluating the fatigue performance of the seismic bracing.

[0026] It should be added that, in this application, the driving source is specifically an electric bidirectional push rod 1, and the open ends of the two electromagnetic suction half-frames 3 are respectively fixed at both ends of the axial outer surface of the electric bidirectional push rod 1, which ensures the stability of the structure and the convenience of operation. The telescopic rod of the electric bidirectional push rod 1 is fixed at the center position of the outer surface of the electromagnetic detection probe 5, which ensures the accuracy of the thrust transmission.

[0027] It should also be noted that a battery compartment 4 is specially provided at one end of the surface of the electric bidirectional push rod 1. The main function of the battery compartment 4 is to hold batteries to provide the power required by the testing machine. In order to ensure the reliability of the power supply, an external power supply 6 is also installed at the top of the surface of the electromagnetic suction half frame 3. The external power supply 6 and the power supply in the battery compartment 4 form a parallel circuit to ensure the stability and continuity of the power supply.

[0028] It is worth noting that a Hall current sensor is also installed in the parallel circuit. The Hall current sensor is integrated into the housing of the electric bidirectional push rod 1 by an embedded installation method, which is used to monitor the current change in real time and ensure the precise control of the test process.

[0029] In addition, a downward force-bearing handle 2 with a normal direction is fixed to the bottom of the surface of the electric bidirectional push rod 1, which facilitates stable operation by the operator; while a gripping frame 8 with an axial direction is fixed to the top of the surface of the electric bidirectional push rod 1, which further improves the convenience and safety of operation.

[0030] For ease of control, a trigger switch 7 is fixed to the top of the surface of the electric bidirectional push rod 1. This trigger switch 7 is mainly used to control the operation of the electric bidirectional push rod 1 and the electromagnetic suction half-frame 3. The control end of the trigger switch 7 is provided with an anti-slip pressing block. The surface of the anti-slip pressing block is specially designed with a wave-shaped anti-slip texture to effectively prevent accidental operation due to hand slippage during operation, thereby improving the overall stability and reliability of operation.

[0031] It should be noted that the operation process of the seismic bracing fatigue performance testing machine proposed in this application is relatively simple and efficient. Specifically, firstly, the seismic bracing to be tested is fixed in the designated position, ensuring that it is completely in contact with the top surface of the electromagnetic detection probe 5. Then, the electric bidirectional push rod 1 is activated by triggering switch 7, causing it to drive the electromagnetic detection probe 5 to reciprocate along the axial direction. It should be added that during this process, the state of the grease sealant will change accordingly with the pressure change of the contact surface. It should be noted that the grease sealant is a type of sealant known to those skilled in the art in the field of sealing, so the applicant will not provide a specific explanation. Finally, in order to accurately determine whether there is a fatigue gap in the seismic bracing, the operator needs to carefully observe the integrity of the grease sealant surface. If cracks or peeling of the sealant are found, it indicates that fatigue damage may have occurred at the contact point.

[0032] It should also be noted that the design of the lower force-bearing handle 2 and the grip frame 8 significantly improves the stability and ease of operation of the equipment during use. The anti-slip press block with a wave-shaped anti-slip texture further enhances the operational reliability of the trigger switch 7, avoiding test interruptions due to misoperation. These detailed designs not only improve work efficiency but also effectively reduce the impact of human factors on test results.

[0033] It is worth noting that after each test, any residue on the surface of the electromagnetic detection probe 5 should be cleaned promptly, and the connection status of the battery compartment 4 and the external power supply 6 should be checked to ensure that the equipment is in optimal working condition over the long term. Additionally, regular calibration of the Hall current sensor will help improve the accuracy of the test data.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fatigue performance testing machine for seismic bracing and hangers, characterized in that... ,include: The driving source is used to apply thrust to two opposite axial directions. The driving source installs electromagnetic suction half-frames (3) in two axial directions, so that the electromagnetic detection probes (5) attracted by magnetic force in the electromagnetic suction half-frames (3) can move along the axial direction in the two electromagnetic suction half-frames (3). The top surface of the electromagnetic detection probe (5) is covered with grease sealant. When the top surface of the electromagnetic detection probe (5) comes into contact with the seismic support, the electromagnetic detection probe (5) is moved axially by the drive source. The integrity of the grease sealant surface is observed to determine whether there is a fatigue gap at the contact position between the seismic support and the top surface of the electromagnetic detection probe (5).

2. The fatigue performance testing machine for seismic bracing and hangers according to claim 1, characterized in that: The driving source is an electric bidirectional push rod (1). The open ends of the two electromagnetic suction half-frames (3) are respectively fixed at both ends of the axial outer surface of the electric bidirectional push rod (1). The telescopic rod body of the electric bidirectional push rod (1) and the center position of the outer surface of the electromagnetic detection probe (5) are fixed.

3. The fatigue performance testing machine for seismic bracing and hangers according to claim 2, characterized in that: A battery compartment (4) is provided at one end of the surface of the electric bidirectional push rod (1). The battery compartment (4) is used to place the battery. An external power supply (6) is installed at the top of the surface of the electromagnetic suction half frame (3). The external power supply (6) and the power supply in the battery compartment (4) form a parallel circuit.

4. The fatigue performance testing machine for seismic bracing and hangers according to claim 3, characterized in that: A Hall current sensor is installed in the parallel circuit. The Hall current sensor is integrated into the housing of the electric bidirectional push rod (1) by an embedded installation method.

5. The fatigue performance testing machine for seismic bracing and hangers according to claim 2, characterized in that: The bottom of the surface of the electric bidirectional push rod (1) is fixed with a downward force-bearing handle (2) arranged in the normal direction, and the top of the surface of the electric bidirectional push rod (1) is fixed with a gripping frame (8) arranged in the axial direction.

6. The fatigue performance testing machine for seismic bracing and hangers according to claim 2, characterized in that: A trigger switch (7) is fixed on the top of the surface of the electric bidirectional push rod (1). The trigger switch (7) is used to control the operation of the electric bidirectional push rod (1) and the electromagnetic suction half frame (3).

7. The fatigue performance testing machine for seismic bracing and hangers according to claim 6, characterized in that: The control end of the trigger switch (7) is provided with an anti-slip pressing block, and the surface of the anti-slip pressing block is provided with a wave-shaped anti-slip texture.

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