A fully automated drop hammer impact testing machine capable of simultaneous batch testing

Abstract

The present invention relates to a fully automatic drop hammer impact testing machine capable of batch testing at the same time, belonging to the technical field of testing equipment, and a batch testing mechanism is used to simultaneously test the impact resistance of multiple test blocks. When the DIC system detects that an impact cycle has ended, the signal is transmitted to the PLC controller and the computer, which then drives the stepper motor to automatically rotate the load-bearing plate to a preset angle to impact the next test piece. The two impact cycles are seamlessly connected and do not require manual debugging of the equipment. This reduces the waste of time and human resources and increases test efficiency and safety.

Description

Technical Field

[0001] The invention relates to the technical field of testing equipment, in particular to a full-automatic drop hammer impact testing machine capable of performing batch tests simultaneously. Background Art

[0002] Concrete components have the characteristics of high bearing capacity, high stiffness and good ductility, and their seismic and fire resistance are also relatively good. Therefore, concrete components are widely used in construction fields such as civil housing, bridges and military industry. Among them, concrete components, as the main load-bearing components, may be hit by vehicles such as cars and ships during their service. Different impact rates and forces will cause different degrees of damage or destruction to the components. Therefore, in order to analyze the impact resistance of concrete components under different conditions, it is necessary to develop an impact resistance testing device. At present, the equipment for impact resistance testing mainly includes the Hopkinson bar test device used for high-speed impact and the drop hammer impact device used for medium and low-speed impact.

[0003] In the existing field of drop hammer impact test device technology, there is no device that can batch test the impact resistance of multiple specimens at different impact rates. In the prior art, most drop hammer impact test devices can only perform impact tests on one specimen in one impact cycle, and the impact rate is often fixed. To change the impact rate, it is necessary to pause the impact process, adjust the impact height between the drop hammer and the specimen, or increase the weight of the drop hammer by manually adding weights to the drop hammer to achieve a high-rate impact within a certain range. If high-speed impact is to be implemented, small testing machines can only use large testing machines due to their limited height and load-bearing capacity, which makes it difficult to accurately adjust the weight and height of the impact hammer. And when an impact cycle is over, most of the existing devices rely on a motor to drive the impact hammer back to its original position before the next impact is carried out. In the impact process, manpower is inevitably consumed and there are many influencing factors, such as the inability to intuitively and accurately determine the impact rate, the need to temporarily stop the testing machine to adjust the parameters, and the friction between the drop hammer and the slide rail. In addition, in the field of drop hammer impact testing at home and abroad, it is rare to test the impact resistance of a single specimen. Generally, multiple specimens are tested under different conditions to obtain performance parameters. However, most of the existing devices have not yet been able to perform impact tests on multiple specimens under different conditions at the same time. Moreover, when making changes to the experimental conditions, such as adjusting the impact rate, the impact angle of the specimen, the specimen fixation, and the specimen replacement, most of the existing equipment in this field relies on manual adjustment. This reduces the test efficiency and increases the test cost.

[0004] Therefore, it is necessary to invent a fully automatic drop hammer impact testing machine that can perform impact tests on multiple specimens at different impact rates at the same time to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a fully automatic drop weight impact testing machine that can perform batch tests simultaneously, so as to solve the problems that the current equipment in the field cannot perform batch tests simultaneously, the drop weight impact rate cannot be accurately controlled, and the process of adjusting the experimental conditions is relatively complicated and laborious.

[0006] To achieve the above object, the present invention can be implemented through the following technical solutions:

[0007] A fully automatic drop hammer impact testing machine capable of batch testing simultaneously, comprising a test bench body for impact test pieces, a chain lifting system, a speed imparting system, and an automatic batch testing assembly;

[0008] The experimental platform body includes an integral support frame, an impact hammer, an electromagnetic adsorption device and a PLC controller; the integral support frame includes four sliding walls, each of which is provided with an electromagnetic adsorption device on the upper part of the sliding wall, and a telescopic baffle plate 1 is provided at the lower part of the sliding wall to prevent the impact hammer from secondary impact. The sliding wall is provided with an impact hammer inside, and a handle is provided at the upper part of the impact hammer. Reflective optical fiber sensors for detecting the movement of the impact hammer are provided on both sides of the integral support frame at the lower side of the sliding wall, and a DIC test system is provided on the outer side of the reflective optical fiber sensor. The telescopic baffle plate 1, the reflective optical fiber sensor, and the electromagnetic adsorption device are all connected to the PLC controller;

[0009] The chain lifting system is arranged inside the overall support frame, and includes a chain lifting device, a chain supporting device, and a second telescopic baffle; the chain lifting device is connected to the chain supporting device, a servo motor connected to the chain lifting device is arranged inside the chain supporting device, and a second telescopic baffle is arranged on the chain lifting device, and the second telescopic baffle is used to lift the impact hammer;

[0010] The speed imparting system is arranged inside the overall support frame, and includes a grating sensor, a slider, a slide rail, and a telescopic baffle plate 2; the grating sensor is arranged on one side of the upper part of the sliding wall, the slider is sleeved on the slide rail, the outer side of the slider is connected to the telescopic baffle plate 2, and the inner side of the slider is connected to the servo motor arranged inside the slide rail; the servo motor, the grating sensor, and the telescopic baffle plate 2 are all connected to the PLC controller;

[0011] The automatic batch testing assembly is arranged at the lower part of the overall supporting frame, and includes a rotating load-bearing plate, a stepper motor, a test block fixing device, a motor, and a JBQ air shock absorber; the JBQ air shock absorber is arranged at the lower side of the motor, the rotating load-bearing plate is arranged at the upper side of the motor, the stepper motor is arranged at the upper center of the rotating load-bearing plate, the stepper motor is connected to the test block fixing device, and the stepper motor and the motor are both connected to the PLC controller.

[0012] Furthermore, the electromagnetic adsorption device is arranged at the top end of the overall supporting frame, and the electromagnetic adsorption device is electrically connected to the PLC controller.

[0013] Furthermore, the sliding wall is placed on the lower side of the electromagnetic adsorption device, a telescopic baffle is placed on the lower side of the sliding wall, and the reflective optical fiber sensors are placed on both sides of the bottom of the overall supporting frame.

[0014] Furthermore, the telescopic baffle is composed of a micro flat-plate linear motor and a steel sheet, the steel sheet is welded to the mover of the linear motor, and the linear motor is closed-loop connected to the PLC controller.

[0015] Furthermore, the middle of the sliding wall is circular with two notches on the left and right, and the width of the notches is 4 mm wider than the handle on the impact hammer.

[0016] Furthermore, the chain lifting device, servo motor, slider, slide rail and PLC controller are placed inside the overall supporting frame.

[0017] Furthermore, the electromagnetic adsorption device, telescopic baffle plate 1, reflective optical fiber sensor, servo motor, grating sensor, stepper motor, and motor are all electrically connected to the PLC controller, and the DIC test system is connected to the electronic computer.

[0018] Furthermore, the chain support device is a hollow rectangular structure made of steel plates, a servo motor is arranged inside, and the servo motor and the chain lifting device are connected by a synchronous belt.

[0019] Furthermore, the slide rail is a hollow rectangular structure made of steel plate, with a servo motor and a synchronous belt arranged inside. The lower part of the synchronous belt is connected to the servo motor through a roller, the upper part of the synchronous belt is connected to the slide rail through a roller, and one side of the synchronous belt is connected to the slider.

[0020] Compared with the prior art, the technical effects and advantages of the present invention are:

[0021] The impact resistance of multiple test blocks is tested simultaneously through batch testing. When the DIC system detects that an impact cycle has ended, the signal is transmitted to the PLC controller and computer, which then drives the stepper motor to automatically rotate the load plate to a preset angle to impact the next test piece. The seamless connection between the two impact cycles does not require manual debugging of the equipment. It reduces the waste of time and human resources and increases test efficiency and safety.

[0022] The present invention is provided with two speed imparting systems and an automatic lifting device. After a free fall without an initial velocity, the impact hammer is driven to the top by a chain lifting device, and is fixed by an electromagnetic adsorption device for the next impact. Another group of impact hammers can obtain a certain initial velocity given by the speed imparting system composed of a slider and a slide rail at the moment of release, and then impact at a certain impact rate. Both lifting and speed imparting devices cycle this process until the DIC system measures a preset result and ends the impact cycle. Both impact methods are carried out in a sliding wall made of POM homopolymer, which reduces the reverse drag force and friction resistance from the rope or the slide rail compared to the rope-type lifting or the device in which the impact hammer is sleeved on the slide rail. While maximizing the reduction of the contact between the lifting device and the impact hammer, it also prevents the impact hammer from swinging and other problems. The landing point is precise and the measured experimental data is accurate.

[0023] After the experiment begins, the impact hammer is driven by the chain lifting device to reciprocate until the DIC detection system measures the results and uploads them to the computer. The rotating load plate automatically rotates and switches to the next specimen. The manipulator specimen fixture automatically fixes and rotates the specimen to a preset angle before starting the next impact cycle. The entire process does not require manual adjustment of any steps until the entire batch of specimens is tested.

[0024] The present invention is provided with a servo motor, a stepper motor and a matching device. The servo motor can drive the synchronous wheel and the synchronous belt to drive the slider to impact the impact hammer, thereby accurately controlling the impact rate. Among them, the slider is riveted to one side of the synchronous belt and slides as the synchronous belt rotates. The stepper motor can finely adjust the rotation angle of the load-bearing plate, thereby accurately switching the test block to the bottom of the impact hammer.

[0025] The present invention uses a sliding wall made of POM (polyoxymethylene homopolymer), and the impact hammer can fall freely or at a certain initial impact rate. The entire falling process only contacts the sliding wall, so there are relatively few interference factors. Compared with similar devices, multiple errors are reduced, such as traction. And because the sliding wall material is extremely excellent, the friction resistance is much smaller than all other similar devices, and is almost negligible compared with similar devices. In turn, the impact hammer is greatly reduced in terms of friction factors during the fall, reducing experimental errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view of a fully automatic drop weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0027] Figure 2 A top view of a fully automatic drop weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0028] Figure 3It is a side view of a chain-type lifting device and an impact device in a fully automatic drop-weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0029] Figure 4 It is a side view of a speed imparting device and an impact device in a fully automatic drop weight impact testing machine capable of simultaneous batch testing of the present invention;

[0030] Figure 5 This is a front view of a rotating load-bearing plate in a fully automatic drop-weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0031] Figure 6 A top view of a rotating load-bearing plate and a fixing device in a fully automatic drop-weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0032] Figure 7 A micro linear motor and a steel sheet in a fully automatic drop weight impact testing machine capable of batch testing at the same time according to the present invention;

[0033] Figure 8 It is an impact hammer in a fully automatic drop hammer impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0034] Fig. 9 It is a schematic diagram of the power connection part of the chain lifting device in a fully automatic drop weight impact testing machine capable of simultaneous batch testing according to the present invention;

[0035] Fig.10 It is a schematic diagram of the connection between the servo motor and the synchronous wheel, the synchronous belt and the slider in the speed imparting device in the fully automatic drop weight impact testing machine capable of batch testing at the same time according to the present invention;

[0036] Fig.11 It is a sliding wall in a fully automatic drop weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0037] Fig.12 This is a flow chart of a fully automatic drop weight impact testing machine capable of performing batch tests simultaneously according to the present invention;

[0038] Fig.13 The present invention is a three-dimensional diagram of a fully automatic drop weight impact testing machine capable of performing batch tests simultaneously.

[0039] In the figure: 1 is an integral support frame; 2 is a sliding wall; 3 is an impact hammer; 4 is a telescopic baffle plate 1; 5 is a reflective optical fiber sensor; 6 is an electromagnetic adsorption device; 7 is a rotary load-bearing plate; 8 is a stepper motor; 9 is a test block fixing device; 10 is a motor; 11 is a JBQ air shock absorber; 12 is a chain lifting device; 13 is a servo motor; 14 is a PLC controller; 15 is a DIC test system; 16 is a grating sensor; 17 is a slider; 18 is a slide rail; 19 is an electronic computer; 20 is a handle; 21 is a supporting device; 22 is a telescopic baffle plate 2. DETAILED DESCRIPTION

[0040] The following is a complete and clear description of the experimental scheme and its advantages in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, it should be noted in conjunction with the accompanying drawings that the described embodiments are, and are only part of the embodiments of the present invention. It does not represent all embodiments. The details of the embodiments of the present invention are not limited to the description of the following exemplary embodiments. Therefore, under the spirit and basic characteristics of the invention, the embodiments obtained by technicians in this field without making creative changes as a prerequisite and before obtaining substantial results belong to the scope of protection of the present invention.

[0041] The following will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments. Figure 1-7 The fully automatic drop hammer impact testing machine capable of performing batch tests simultaneously includes a test bench body for impact test pieces, a speed imparting system and an automatic lifting device, and automatic batch testing and fixing components.

[0042] The main body of the test bench includes an integral support frame 1, a sliding wall 2, an impact hammer 3, a handle 20, an electromagnetic adsorption device 6, an anti-secondary impact device, and a control device. The anti-secondary impact device includes a telescopic baffle 1 4 and a reflective optical fiber sensor 5. The control device includes a PLC controller 14, a DIC test system 15 (three-dimensional optical measurement system), and an electronic computer 19. The speed imparting system and the automatic lifting device include a telescopic baffle 22, a chain lifting device 12, a supporting device 21, a servo motor 13, a grating sensor 16, a slider 17, and a slide rail 18. The automatic batch test assembly includes a rotating load-bearing plate 7, a stepper motor 8, a test block fixing device 9, a motor 10, and a JBQ air shock absorber 11.

[0043] The electromagnetic adsorption device 6 is riveted to the top of the integral support frame 1 and is electrically connected to the PLC controller 14 .

[0044] The test bench body of the impact specimen has two kinds of support frames, the difference is that a grating sensor 16 is installed on the upper end of one impact frame. When the servo motor 13 drives the slider 17 carrying the telescopic baffle 22 to slide downward across the grating sensor 16, the electromagnetic adsorption device 6 loses its suction force, and at the same time, the impact hammer 3 obtains the initial impact speed given by the slider 17 driving the telescopic baffle 22 in a stationary state.

[0045] The sliding wall 2 is made of POM (polyoxymethylene homopolymer), and its friction coefficient is much smaller than any metal slide rail used in existing devices. The impact hammer 3 is placed in the sliding wall 2, and will only contact other parts when lifting during the impact process, reducing the error. The sliding wall 2 is placed on the lower side of the electromagnetic adsorption device 6, the telescopic baffle 1 4 is placed on the lower side of the sliding wall 2, and the reflective optical fiber sensor 5 is placed at the bottom of the overall support frame 1. When the impact hammer 3 blocks the reflective optical fiber sensor 5 and hits the test block and is about to rebound, the telescopic baffle 1 4 driven by the linear motor buckles the upper edge of the semicircular hammer head of the impact hammer 3 to prevent secondary impact.

[0046] The upper side of the impact hammer 3 has two symmetrical handles 20. The middle of the sliding wall 2 is a circle with two notches on the left and right, and the size of the notch is 4 mm wider than the handle on the impact hammer 3.

[0047] The chain lifting device 12, the support device 21, the servo motor 13, the slider 17, the slide rail 18, the PLC controller 14, and the DIC test system 15 are placed inside the four support frames. The support device 21 is made of a steel pipe, and the servo motor 13 is arranged inside. The output shaft of the servo motor 13 is connected to the lifting chain roller of the chain lifting device 12 through a synchronous belt.

[0048] The chain lifting device 12 is driven by a servo motor 13 and is electrically connected to a PLC controller 14 and is placed on a test bench. The slider 17 in the speed imparting device is riveted to the synchronous belt inside the slide rail 18 and slides through a vertical gap in the middle of the slide rail 18. The roller on the upper part of the synchronous belt is rollingly connected to the steel plate on the upper part of the slide rail 18 through a bearing; one end of the roller on the lower part of the synchronous belt is rollingly connected to the steel plate on the lower part of the slide rail 18 through a bearing, and the other end is connected to the output shaft gear of the servo motor 13 through a gear. The slider 17 is sleeved on the slide rail 18 to ensure that the slider 17 performs reciprocating vertical motion along the slide rail 18. While ensuring the accuracy of the experiment, the impact hammer 3 is driven to reach a predetermined speed.

[0049] The JBQ air shock absorber 11 is placed on the lower side of the motor 10, and the rotary load plate 7, the stepper motor 8, and the test piece fixture 9 are placed on the upper side of the motor 10. The test piece fixture 9 is an existing manipulator device with automatic adjustment of the rotation angle and clamping function. The test piece fixture 9 is connected to the stepper motor 8 by a coupling, and the two are electrically connected to the computer 19 and the DIC test system 15.

[0050] The electromagnetic adsorption device 6, the telescopic baffle 1 4, the telescopic baffle 2 22, the reflective optical fiber sensor 5, the servo motor 13, the grating sensor 6, the stepper motor 8, the test block fixing device 9, and the motor 10 are all electrically connected to the PLC controller 14. The DIC test system 15 is connected to the electronic computer 19. The motor 10 is also a stepper motor.

[0051] Reference Figure 1 and 2 The electromagnetic adsorption device 6 on the top of the integral support frame 1 is riveted to the frame. The lower side of the electromagnetic adsorption device 6 is a sliding wall 2. The inside of the sliding wall 2 is an impact hammer 3. There are two symmetrical handles 20 on both sides of the upper part of the impact hammer 3. The middle of the sliding wall 2 is a circle with two notches on the left and right, and the size of the notch is 4 mm wider than the handle 20 on the impact hammer 3. Figure 3 , 4 As shown in FIG. 2 , the lower side of the sliding wall 2 is a telescopic baffle 4 driven by a linear motor and a reflective optical fiber sensor 5. Figure 5 The automatic batch detection and fixing assembly consisting of a rotating load plate 7, a stepping motor 8, a test block fixing device 9, a motor 10, and a JBQ air shock absorber 11 is placed in front of the overall support frame 1 and partially penetrates between the reflective optical fiber sensors 5 on the lower side of the overall support frame 1. The test block fixing device 9 is a manipulator that can automatically grip and rotate, and is connected to a PLC controller 14 and an electronic computer 19.

[0052] See attached Figure 2 , four impact devices and batch testing and fixing components surround two different lifting and speed imparting devices including a chain lifting device 12, a servo motor 13, a slider 17, a slide rail 18, and a PLC controller 14 in the middle.

[0053] See attached Figure 1 , Figure 3 and Fig. 9, the whole impact process is described: the impact hammer 3 is adsorbed on the electromagnetic adsorption device 6. It is free-falling from the electromagnetic adsorption device 6. When the hammer head of the impact hammer 3 blocks the reflective optical fiber sensor 5, the reflective optical fiber sensor 5 transmits a signal to the PLC controller 14. The PLC controller 14 controls the telescopic baffle 14 to extend, so that the extended telescopic baffle 14 buckles the upper part of the hammer head of the hemispherical impact hammer 3 that has hit the test block and is about to bounce up, thereby preventing the secondary impact of the impact hammer 3 from affecting the experimental results. The telescopic baffle 14 is riveted by a linear motor and a steel sheet. At the same time, the DIC test system 15 tests the specimen and uploads the results to the electronic computer 19. Then the PLC controller 14 controls the telescopic baffle 14 to shrink, and the servo motor 13 and the chain lifting device 12 drive the telescopic baffle 22 to lift the impact hammer 3 to the electromagnetic adsorption device 6. The linear motor drives the steel sheet to shrink. After the impact hammer 3 is adsorbed on the electromagnetic adsorption device 6, it is ready to start the next impact. In the test after a certain impact, the DIC test system 15 uploads data to the electronic computer 19 and determines that the experimental purpose has been achieved. The PLC controller 14 then controls the batch test assembly to turn the next test piece to the lower side of the impact hammer 3 at a set angle, and then the test block fixture 9 automatically fixes the test piece and adjusts the preset impact angle to start a new impact cycle for the new test piece.

[0054] Reference Figure 1 , Figure 4 and Fig.10 Before the impact begins, the servo motor 13 drives the slider 17 to the top by rotating the synchronous wheel and the synchronous belt. Before the impact begins, the slider 17 will slide downward across the grating sensor 16 on the slide rail 18 at a preset speed given by the servo motor 13. At the same time, the impact hammer 3 breaks away from the electromagnetic adsorption device 6 and falls freely. Then, at the moment when the impact hammer 3 falls, it is subjected to a speed given by the impact baffle on the slider 17. The impact hammer 3 falls at a preset impact speed until the impact hammer 3 reaches the preset speed and breaks away from the telescopic baffle 22 on the slider 17 and impacts the test piece downward. When the hammer head blocks the reflective optical fiber sensor 5 and hits the test block and is about to bounce up, the reflective optical fiber sensor 5 sends a new signal to the PLC controller 14, and the PLC controller 14 drives the telescopic baffle 14 to buckle the impact hammer 3 to prevent the impact of the secondary impact on the experimental results. At the same time, the DIC test system 15 detects the test piece and uploads the results to the electronic computer 19. When the detection is completed, the PLC controller 14 controls the telescopic baffle 22 on the slider 17 to extend, driving the impact hammer 3 to return to the electromagnetic adsorption device 6. After the DIC test system 15 obtains the test result, the PLC controller 14 drives the motor 10 to drive the load plate 7 to rotate by a preset angle. The next test piece is placed under the impact hammer 3 to start the next impact.

[0055] The slider 17 can give different impact rates to the impact hammer 3 according to different preset speeds.

[0056] Fig. 9 The servo motor 13 and part of the synchronous wheel are placed inside the support device 21, wherein the servo motor 13 and the support device 21 are riveted. Fig.10 The servo motor 13, the synchronous wheel and the roller are all placed inside the slide rail 18, and the servo motor 13 and the slide rail 18 are riveted.

[0057] The JBQ air shock absorber 11 is bolted to the lower side of the motor 10 .

[0058] The above experimental process demonstrates the working principle, basic features and preferred embodiments of the present invention, and does not limit the functions of the present invention. Therefore, under the premise of the spirit or basic features of the present invention, any replacement or modification made by a person skilled in the art to some devices of the present invention in any other form and any labor results without innovation shall be included in the protection scope of the present invention.

Claims

1. A fully automatic drop weight impact testing machine capable of batch testing simultaneously, characterized in that: It includes the test bench body for impact specimens, chain lifting system, speed imparting system, and automatic batch testing components; The test bench body comprises an integral support frame (1), an impact hammer (3), an electromagnetic adsorption device (6) and a PLC controller (14); the integral support frame (1) comprises four sliding walls (2), each of which is provided with an electromagnetic adsorption device (6) at the top, a telescopic baffle (4) for preventing the impact hammer (3) from secondary impact is provided at the bottom of the sliding wall (2), an impact hammer (3) is provided inside the sliding wall (2), a handle (20) is provided at the top of the impact hammer (3), reflective optical fiber sensors (5) for detecting the movement of the impact hammer (3) are provided on both sides of the integral support frame (1) at the bottom of the sliding wall (2), a DIC test system (15) is provided on the outside of the reflective optical fiber sensor (5), and the telescopic baffle (4), the reflective optical fiber sensor (5) and the electromagnetic adsorption device (6) are all connected to the PLC controller (14); The chain lifting system is arranged inside the integral support frame (1), and comprises a chain lifting device (12), a chain supporting device (21), and a second telescopic baffle (22); the chain lifting device (12) is connected to the chain supporting device (21), a servo motor (13) connected to the chain lifting device (12) is arranged inside the chain supporting device (21), and a second telescopic baffle (22) is provided on the chain lifting device (12), and the second telescopic baffle (22) is used to lift the impact hammer (3); The speed imparting system is arranged inside the overall support frame (1), and comprises a grating sensor (16), a slider (17), a slide rail (18), and a second telescopic baffle (22); the grating sensor (16) is arranged on one side of the upper part of the sliding wall (2), the slider (17) is sleeved on the slide rail (18), the outer side of the slider (17) is connected to the second telescopic baffle (22), and the inner side of the slider (17) is connected to a servo motor (13) arranged inside the slide rail (18); the servo motor (13), the grating sensor (16), and the second telescopic baffle (22) are all connected to a PLC controller (14); The automatic batch test assembly is arranged at the bottom of the overall support frame (1), and comprises a rotating load-bearing plate (7), a stepper motor (8), a test block fixing device (9), a motor (10), and a JBQ air shock absorber (11); the JBQ air shock absorber (11) is arranged at the bottom of the motor (10), the rotating load-bearing plate (7) is arranged at the top of the motor (10), the stepper motor (8) is arranged at the center of the top of the rotating load-bearing plate (7), the stepper motor (8) and the test block fixing device (9) are connected, and the stepper motor (8) and the motor (10) are both connected to a PLC controller (14); The electromagnetic adsorption device (6) is arranged at the top end of the overall support frame (1), and the electromagnetic adsorption device (6) is electrically connected to the PLC controller (14); The sliding wall (2) is placed on the lower side of the electromagnetic adsorption device (6), the telescopic baffle plate 1 (4) is placed on the lower side of the sliding wall (2), and the reflective optical fiber sensor (5) is placed on both sides of the bottom of the overall support frame (1).

2. The fully automatic drop weight impact testing machine capable of batch testing at the same time according to claim 1, characterized in that: The telescopic baffle plate 1 (4) is composed of a micro flat-plate linear motor and a steel sheet, the steel sheet is welded to the mover of the linear motor, and the linear motor is connected to the PLC controller (14) in a closed loop.

3. The fully automatic drop weight impact testing machine capable of batch testing at the same time according to claim 1, characterized in that: The middle of the sliding wall (2) is circular with two notches on the left and right, and the width of the notches is 4 mm wider than the handle (20) on the impact hammer (3).

4. The fully automatic drop weight impact testing machine capable of batch testing at the same time according to claim 1, characterized in that: The chain lifting device (12), the servo motor (13), the slider (17), the slide rail (18), and the PLC controller (14) are placed inside the overall support frame (1).

5. The fully automatic drop weight impact testing machine capable of batch testing at the same time according to claim 1, characterized in that: The electromagnetic adsorption device (6), telescopic baffle (4), reflective optical fiber sensor (5), servo motor (13), grating sensor (16), stepper motor (8), and motor (10) are all electrically connected to the PLC controller (14), and the DIC test system (15) is connected to the electronic computer (19).

6. The fully automatic drop weight impact testing machine capable of batch testing at the same time according to claim 1, characterized in that: The chain support device (21) is a hollow rectangular parallelepiped structure made of steel plates, and a servo motor (13) is arranged inside the chain support device (21). The servo motor (13) is connected to the chain lifting device (12) by means of a synchronous belt.

7. The fully automatic drop weight impact testing machine capable of batch testing at the same time according to claim 1, characterized in that: The slide rail (18) is a hollow rectangular parallelepiped structure made of steel plate, and a servo motor (13) and a synchronous belt are arranged inside. The lower part of the synchronous belt is connected to the servo motor (13) through a roller, and the upper part of the synchronous belt is connected to the slide rail (18) through a roller. One side of the synchronous belt is connected to the slider (17).

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