Testing device provided with switch and used for preventing repeated falling points in falling ball impact test

Abstract

The utility model relates to the technical field of material detection, and particularly discloses a repeated drop point prevention test device with a switch for a falling ball impact test, which comprises a detection table and a falling ball detection unit, the detection table is used for storing a soft material to be detected; the falling ball detection unit comprises a ball body, an electromagnetic adsorption unit used for adsorbing and releasing the ball body, and a position locking piece used for locking and releasing the electromagnetic adsorption unit. In the detection process, the ball body pops up reversely after falling on the soft material to be detected, the detection module can adopt a sound sensor, the sound generated when the ball body collides with the soft material exceeds a threshold value set by the sound sensor, the magnetic module is started by the controller connected with the sound sensor when the ball body collides with the soft material, and the magnetic module is started by the controller connected with the sound sensor. According to the device, the rebounded ball falling on the soft material can be adsorbed, only a single color development point is formed on the pressure film, and a detection result can be conveniently checked.

Description

Technical Field

[0001] This utility model belongs to the field of materials testing technology, specifically relating to a test device with a switch for preventing repeated drop points in a falling ball impact test. Background Technology

[0002] Traditional ball drop impact test devices are mostly used to test hard materials. During the test, the ball is attracted by an electromagnetic adsorption unit. When the electromagnetic adsorption unit is turned off, the ball, which loses its attraction, falls under the action of gravity and lands on the material. The degree of damage to the sample is observed to test the hard material.

[0003] When measuring soft materials using the aforementioned device, a pressure membrane is typically used in conjunction with the soft material. A ball falls onto the pressure membrane, and the impact creates a colored spot at the point of impact. However, after hitting the soft material, the ball bounces back and falls again, resulting in multiple colored spots on the pressure membrane. These multiple spots hinder subsequent observation, and if the spots overlap, it significantly increases the difficulty of interpreting the test results. Therefore, this application proposes a test device with a switch for preventing repeated impacts in a falling ball impact test. This device can attract and retain the ball that bounces off the soft material, creating only a single colored spot on the pressure membrane, thus facilitating the viewing of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a test device with a switch for preventing repeated drop points in a falling ball impact test, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for preventing repeated drop points in a falling ball impact test with a switch, comprising a test platform and a falling ball detection unit;

[0006] The testing station is used to store soft materials to be tested;

[0007] The ball-falling detection unit includes a ball, an electromagnetic adsorption unit for adsorbing and releasing the ball, and a position locking component for locking and releasing the electromagnetic adsorption unit. The detection platform is equipped with a detection module for detecting whether the ball has fallen.

[0008] A magnetic module is installed between the detection platform and the ball-dropping detection unit. The detection module is connected to the magnetic module through a controller. The magnetic module is used to attract the bouncing ball.

[0009] The magnetic module is connected to the vertical rod via a horizontal adjustment unit, which is used to adjust the distance between the vertical rod and the magnetic module.

[0010] The horizontal adjustment unit is connected to the vertical rod through the vertical adjustment unit, and the vertical adjustment unit is used to adjust the height of the magnetic module from the detection table.

[0011] The magnetic module connects to the power supply unit and switch.

[0012] Preferably, the lateral adjustment unit includes a telescopic plate and a sleeve, with the sleeve being inserted into the telescopic plate.

[0013] Preferably, a lateral adjusting bolt is screwed into the side of the sleeve near the magnetic module, the end of the lateral adjusting bolt is inserted into the locking plate, and a copper sleeve is installed inside the locking plate, the copper sleeve and the locking plate can rotate relative to each other.

[0014] Preferably, the longitudinal adjustment unit includes a lifting frame, in which a roller is rotatably mounted. A straight groove is provided on the vertical rod, the roller rests against the straight groove, and the roller is connected to a height adjustment handle for driving its rotation.

[0015] Preferably, the lifting frame is equipped with a lifting plate, and a longitudinal adjusting bolt is screwed into the lifting plate. The longitudinal adjusting bolt is connected to one of the longitudinal adjusting holes that are evenly distributed in the straight groove by a thread.

[0016] Preferably, the detection module uses a sound sensor.

[0017] Preferably, the detection module may also use a laser sensor, model SYM03D-T20N / L.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] I. When testing the impact resistance of soft materials, this utility model activates the electromagnetic adsorption unit, which magnetically attracts the sphere. The height of the electromagnetic adsorption unit is adjusted, and the position locking component is tightened to lock the height. Afterward, the electromagnetic adsorption unit is deactivated, and the sphere, deprived of magnetism, falls under its own weight and lands on the soft material to be tested, creating a dent. After impact, the sphere bounces back. The detection module can use a sound sensor; if the sound of the sphere colliding with the soft material exceeds a threshold set by the sound sensor, the controller connected to the sound sensor activates the magnetic adsorption module, which then attracts the bounced sphere. In summary, this device can attract and retain a sphere that bounces back after falling onto a soft material, forming only a single colored spot on the pressure membrane, facilitating the viewing of the test results.

[0020] II. The magnetic module and the vertical rod of this utility model are connected by a horizontal adjustment unit and a vertical adjustment unit. The former can adjust the distance between the magnetic module and the vertical rod to avoid the ball colliding with the magnetic module during the fall. The vertical adjustment unit can adjust the height difference between the magnetic module and the detection platform. When in use, the magnetic module should be close to the drop point of the ball to prevent the ball from being missed. The magnetic module with adjustable distance has a stronger adaptability. Attached Figure Description

[0021] Figure 1 This is one of the structural schematic diagrams of the anti-rebound device for the falling ball impact test with a switch in this utility model.

[0022] Figure 2 This utility model Figure 1 A schematic diagram of the structure at point A in the middle.

[0023] Figure 3 This is the second schematic diagram of the anti-rebound device for the falling ball impact test with a switch in this utility model.

[0024] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point B.

[0025] Figure 5 This is a schematic diagram of the lateral adjustment unit in this utility model.

[0026] Figure 6 This is a schematic diagram of the internal structure of the lateral adjustment unit in this utility model.

[0027] In the diagram: 1. Detection platform; 2. Ball drop detection unit; 201. Ball; 202. Electromagnetic adsorption unit; 203. Position locking component; 3. Vertical rod; 301. Straight groove; 4. Detection module; 5. Controller; 6. Magnetic adsorption module; 7. Lateral adjustment unit; 701. Telescopic plate; 702. Sleeve; 703. Lateral adjustment bolt; 704. Locking plate; 705. Copper sleeve; 8. Longitudinal adjustment unit; 801. Roller; 802. Lifting frame; 803. Lifting plate; 804. Longitudinal adjustment bolt; 805. Height adjustment handle; 9. Switch; 10. Power supply assembly; 11. Adsorption indicator light. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] Reference Figures 1-6 A test device for preventing repeated drop points in a ball impact test with a switch, comprising a test platform 1 and a ball detection unit 2;

[0031] Testing station 1 is used to store soft materials to be tested;

[0032] The ball detection unit 2 includes a ball 201, an electromagnetic adsorption unit 202 for adsorbing and releasing the ball 201, and a position locking member 203 for locking and releasing the electromagnetic adsorption unit 202.

[0033] The electromagnetic adsorption unit 202 can magnetically attract or release the ball 201. When testing the impact resistance of soft materials, the electromagnetic adsorption unit 202 is activated, and the ball 201 is magnetically attracted. The height of the electromagnetic adsorption unit 202 is adjusted, and the position locking part 203 is tightened to lock the height of the electromagnetic adsorption unit 202. Then the electromagnetic adsorption unit 202 is turned off, and the ball 201, which loses its magnetic force, falls under its own gravity and lands on the soft material to be tested, creating a dent in the soft material.

[0034] After the ball 201 falls onto the soft material to be tested, it will bounce back. After bouncing, the ball 201 will fall again and leave a hole on the soft material to be tested. If the hole coincides with or partially coincides with the dent, it will make it more difficult to identify the dent and make it impossible to accurately determine the impact resistance value of the soft material to be tested. Therefore, a detection module 4 for detecting whether the ball 201 falls is set on the testing table 1.

[0035] It should be added that a magnetic module 6 is provided between the detection platform 1 and the ball-dropping detection unit 2. The detection module 4 is connected to the magnetic module 6 through the controller 5. The magnetic module 6 is used to attract the bounced ball 201, thereby preventing the bounced ball 201 from falling again. Specifically, after the detection module 4 detects that the ball 201 has fallen, it activates the magnetic module 6 through the controller 5, and the magnetic module 6 attracts the bounced ball 201.

[0036] It should be noted that the magnetic module 6 is connected to the vertical rod 3 through the horizontal adjustment unit 7. The horizontal adjustment unit 7 is used to adjust the distance between the vertical rod 3 and the magnetic module 6. The diameters of the spheres 201 of different sizes are different. By adjusting the distance between the vertical rod 3 and the magnetic module 6 through the horizontal adjustment unit 7, the spheres 201 and the magnetic module 6 can be staggered to prevent the spheres 201 from falling onto the magnetic module 6.

[0037] Specifically, the lateral adjustment unit 7 can be implemented in various ways. One such implementation is as follows: the lateral adjustment unit 7 includes a telescopic plate 701 and a sleeve 702. The sleeve 702 is inserted into the telescopic plate 701. A lateral adjustment bolt 703 is screwed into the side of the sleeve 702 near the magnetic module 6. The lateral adjustment bolt 703 is connected to one of the lateral adjustment holes that are equally spaced inside the telescopic plate 701 by a thread.

[0038] Another implementation is to replace the lateral adjustment bolt 703 with a lateral pin, which is inserted into one of the lateral adjustment holes.

[0039] Another implementation method is as follows: Refer to Figure 5 , Figure 6 The lateral adjustment unit 7 includes a telescopic plate 701 and a sleeve 702. The sleeve 702 is inserted into the telescopic plate 701. A lateral adjustment bolt 703 is screwed into the side of the sleeve 702 near the magnetic module 6. The end of the lateral adjustment bolt 703 is inserted into the locking plate 704. Rotating the lateral adjustment bolt 703 allows the locking plate 704 to press against the telescopic plate 701, fixing its position relative to the sleeve 702 through friction. In this way, compared to the connection method using a lateral adjustment hole and a lateral adjustment bolt 703, the relative position of the telescopic plate 701 and the sleeve 702 can be locked at any position. The magnetic module 6 offers more position adjustment options for easy fine-tuning. A copper sleeve 705 is installed inside the locking plate 704, allowing relative rotation between the copper sleeve 705 and the locking plate 704. The copper sleeve 705 is fixed relative to the lateral adjusting bolt 703. The locking plate 704 is divided into two parts, which are combined to house the copper sleeve 705. This ensures that the locking plate 704 and the lateral adjusting bolt 703 can only rotate relative to each other, preventing relative displacement in the front-to-back direction. Thus, when the locking plate 704 presses against the outer wall of the telescopic plate 701, it will not rotate relative to the telescopic plate 701, avoiding relative wear between them.

[0040] In addition, the horizontal adjustment unit 7 is connected to the vertical rod 3 through the vertical adjustment unit 8. The vertical adjustment unit 8 is used to adjust the height of the magnetic suction module 6 from the detection table 1. The maximum height of the ball 201 when it rebounds is also different depending on the height of the ball 201 when it falls. The height of the ball 201 can be adjusted up and down. Therefore, the height of the magnetic suction module 6 located between the detection table 1 and the ball falling detection unit 2 also needs to be adjustable. Therefore, the vertical adjustment unit 8 is set to adjust its height.

[0041] The longitudinal adjustment unit 8 can also be implemented in various ways. One implementation is as follows: The longitudinal adjustment unit 8 includes a lifting frame 802, in which a roller 801 is rotatably installed. Correspondingly, a straight groove 301 is provided on the vertical rod 3. Compared with the cylindrical vertical rod 3, the straight groove 301 can increase the contact area between the roller 801 and the roller 801, providing sufficient friction for the vertical movement of the lifting frame 802. The roller 801 abuts against the straight groove 301, and the roller 801 is connected to a height adjustment handle 805 for driving its rotation.

[0042] It should be noted that a lifting plate 803 is installed on the lifting frame 802, and a longitudinal adjusting bolt 804 is screwed into the lifting plate 803. The longitudinal adjusting bolt 804 is connected to one of the longitudinal adjusting holes that are evenly distributed in the straight groove 301 by thread.

[0043] Another implementation is as follows: without adding roller 801, the lifting frame 802 and the vertical rod 3 can move up and down relative to each other, and the height of the lifting frame 802 can be adjusted by the longitudinal adjusting bolt 804 and the equally spaced longitudinal adjusting holes.

[0044] Another implementation method is to replace the roller 801 with a gear, set a corresponding rack on the vertical rod 3, adjust the height of the lifting frame 802 by rotating the gear, and fix its height by the longitudinal adjusting bolt 804.

[0045] The detection module 4 has multiple options. The detection module 4 uses a sound sensor. The sound sensor receives and measures the sound of the ball 201 colliding with the soft material. When the sound exceeds the set threshold, that is, after the ball 201 collides with the soft material, the attraction indicator 11 is turned on, and the switch 9 (sound-controlled relay) is closed at the same time. The sound-controlled relay uses an SRD-05VDC-SL-C switch module. The magnetic attraction module 6 is powered on and attracts the ball 201 that bounces up after colliding with the soft material. The magnetic attraction module 6 is connected to the power supply component 10 and the switch 9.

[0046] Example 2:

[0047] Based on Embodiment 1, the detection module 4 can also use a laser sensor, model SYM03D-T20N / L. The laser sensor includes a transmitter and a receiver. Before the ball 201 falls, the laser sensor is in a normally open state, that is, the receiver continuously receives the laser emitted by the transmitter. During a certain process of falling, the falling ball 201 will block the laser emitted by the transmitter. At this time, the controller 5 connected to the laser sensor can activate the magnetic attraction module 6 through the switch 9 to attract the bouncing ball 201.

[0048] Working principle:

[0049] When testing the impact resistance of soft materials, the electromagnetic adsorption unit 202 is activated, which magnetically adsorbs the ball 201. The height of the electromagnetic adsorption unit 202 is adjusted, and the position locking part 203 is tightened to lock the height of the electromagnetic adsorption unit 202. Then the electromagnetic adsorption unit 202 is turned off, and the ball 201, which loses its magnetic force, falls under its own gravity and lands on the soft material to be tested, creating a dent in the soft material.

[0050] After the ball 201 falls onto the soft material to be tested, it will bounce back. The detection module 4 can use a sound sensor. When the sound of the ball 201 colliding with the soft material exceeds the threshold set by the sound sensor, the controller 5 connected to the sound sensor will activate the magnetic module 6, which will then attract the bounced ball 201.

[0051] 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 test device for preventing repeated drop points in a ball impact test with a switch, comprising a test stand (1) and a ball detection unit (2); The testing station (1) is used to store soft materials to be tested; The ball-dropping detection unit (2) includes a ball (201), an electromagnetic adsorption unit (202) for adsorbing and releasing the ball (201), and a position locking member (203) for locking and releasing the electromagnetic adsorption unit (202). Its characteristic is that... The detection platform (1) is equipped with a detection module (4) for detecting whether the ball (201) has fallen; A magnetic module (6) is provided between the detection platform (1) and the ball dropping detection unit (2). The detection module (4) is connected to the magnetic module (6) through the controller (5). The magnetic module (6) is used to attract the ball (201) that bounces up. The magnetic module (6) is connected to the vertical rod (3) through a horizontal adjustment unit (7), which is used to adjust the distance between the vertical rod (3) and the magnetic module (6). The horizontal adjustment unit (7) is connected to the vertical rod (3) through the vertical adjustment unit (8), and the vertical adjustment unit (8) is used to adjust the height of the magnetic suction module (6) from the detection table (1); The magnetic module (6) is connected to the power supply assembly (10) and the switch (9).

2. The test device for preventing repeated drop points in a falling ball impact test with a switch according to claim 1, characterized in that, The lateral adjustment unit (7) includes a telescopic plate (701) and a sleeve (702), with the sleeve (702) inserted into the telescopic plate (701).

3. The test device for preventing repeated drop points in a falling ball impact test with a switch according to claim 2, characterized in that, A transverse adjusting bolt (703) is screwed into the side of the sleeve (702) near the magnetic module (6). The end of the transverse adjusting bolt (703) is inserted into the locking plate (704). A copper sleeve (705) is installed inside the locking plate (704). The copper sleeve (705) and the locking plate (704) can rotate relative to each other.

4. The test device for preventing repeated drop points in a falling ball impact test with a switch according to claim 1, characterized in that, The longitudinal adjustment unit (8) includes a lifting frame (802), in which a roller (801) is rotatably installed. A straight groove (301) is provided on the vertical rod (3), and the roller (801) abuts against the straight groove (301). The roller (801) is connected to a height adjustment handle (805) for driving its rotation.

5. The test device for preventing repeated drop points in a falling ball impact test with a switch according to claim 4, characterized in that, The lifting frame (802) is equipped with a lifting plate (803), and a longitudinal adjusting bolt (804) is screwed into the lifting plate (803). The longitudinal adjusting bolt (804) is connected to one of the longitudinal adjusting holes that are evenly distributed in the straight groove (301) by a thread.

6. The test device for preventing repeated drop points in a falling ball impact test with a switch according to claim 1, characterized in that, The detection module (4) uses a sound sensor.

7. The test device for preventing repeated drop points in a falling ball impact test with a switch according to claim 1, characterized in that, The detection module (4) can also use a laser sensor, model SYM03D-T20N / L.

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