Falling ball rebound test device with two-stage or multi-stage telescopic system

Abstract

The utility model relates to the field of material rebound rate testing, in particular to a falling ball rebound testing device with a two-stage or multi-stage telescopic system. The device comprises a main plate, a sample table is fixedly connected to the middle of the upper surface of the main plate, a plurality of supporting frames are fixedly connected to the front side and the rear side of the upper surface of the main plate, a supporting plate is fixedly connected to the other ends of the supporting frames, a round hole is formed in the center of the supporting plate, and the round hole is fixedly connected with one end of a high-transmittance pipe; the size of the round hole corresponds to the size of the high-permeability pipe, the other end of the high-permeability pipe is slidably connected with a telescopic rod, the top of the telescopic rod is rotatably connected with a base, the bottom of the base is fixedly connected with an electromagnet, a steel ball is attracted to the bottom of the electromagnet, and the right side of the top of the main plate is fixedly connected with a host. The telescopic rod is additionally arranged between the high-permeability pipe and the base, so that the falling height of the steel ball is adjusted up and down, and the purpose that the steel ball can fall from different heights is achieved.

Description

Technical Field

[0001] The utility model relates to the field of material rebound rate testing, and more specifically to a ball-drop rebound test device with a two-stage or multi-stage telescopic system. Background Art

[0002] The Rebound Method is a material mechanics testing method used to measure the elastic modulus or elastic recovery performance of materials. It is commonly used to test the rebound performance of soft materials or plastic materials.

[0003] The basic principle of the Rebound Method is to apply a certain force or strain, release this force or strain, and then measure the degree to which the material returns to its initial state. During the test, a rebound hammer or rebound testing equipment is usually used. In the rebound test, the commonly used indicators are the Rebound Ratio or the Rebound Coefficient, which represent the ability of the material to return to its initial state after being subjected to a certain force or strain. The rebound rate can be used to evaluate the elastic recovery performance of materials, that is, to what extent the material can return to its original shape or length after being stressed. This method is widely used in the mechanical property testing of various materials, especially in the fields of soft materials, rubber, plastics, foam materials, etc. It can provide information on the elastic characteristics, energy absorption capacity, deformation behavior, etc. of materials, and is helpful for applications in fields such as engineering design, material selection, and product quality control. Taking the rebound rate of sponge materials as an example, the higher the rebound rate, the stronger the ability of the sponge material to return to its original state after being subjected to pressure, and this recovery ability is crucial for various applications, such as providing good support and comfort. In the high-rebound sponge standard, the rebound rate is usually between 50% and 90%. Due to different standard methods for testing the sample rebound rate or different ball-drop heights required by customers, a ball-drop method rebound test device with highly flexible adjustment is needed.

[0004] In view of this, the utility model provides a ball-drop rebound test device with a two-stage or multi-stage telescopic system. Summary of the Utility Model

[0005] The purpose of the utility model is to address the deficiencies of the prior art by providing a ball-drop rebound test device with a two-stage or multi-stage telescopic system to solve the problems raised in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solution: A falling ball rebound test device with a secondary or multi-stage telescopic system, which includes a main board. In the middle of the upper surface of the main board, a sample stage is fixedly connected. On the front side and the rear side of the upper surface of the main board, a plurality of support frames are fixedly connected. The other end of the support frame is fixedly connected with a support plate. A round hole is provided in the center of the support plate. One end of the high-transparency tube is fixedly connected to the round hole. The size of the round hole corresponds to the size of the high-transparency tube. The other end of the high-transparency tube is slidably connected with a telescopic rod. The top of the telescopic rod is rotatably connected with a base. An electromagnet is fixedly connected to the bottom of the base. A steel ball is adsorbed to the bottom of the electromagnet. On the right side of the top of the main board, a mainframe is fixedly connected.

[0007] As a further improvement of this technical solution, a vertical board is fixedly connected to the top of the main board. The vertical board is located between the main board and the frame. A plurality of infrared sensors are fixedly connected to the upper part of the vertical board. The infrared sensors are evenly and equally spaced. The infrared sensors correspond to the straight line of the falling of the steel ball.

[0008] As a further improvement of this technical solution, a plurality of screw holes corresponding to nuts are provided on the left side surface of the high-transparency tube. A plurality of nuts are rotatably connected to the left side surface of the high-transparency tube. Each nut is evenly and equally spaced.

[0009] As a further improvement of this technical solution, the nut penetrates through the high-transparency tube and is fixedly connected to a baffle inside the high-transparency tube. The baffle is located inside the high-transparency tube and contacts the outer surface of the telescopic rod.

[0010] As a further improvement of this technical solution, scales are engraved on the outer surface of the telescopic rod. The number of the scales corresponds to the length of the telescopic rod extended.

[0011] As a further improvement of this technical solution, the other end of the telescopic rod is rotatably connected with a rotating shaft. The rotating shaft is fixedly connected with a base.

[0012] As a further improvement of this technical solution, a bubble level is fixedly connected to the left side of the upper surface of the main board. A plurality of support feet are fixedly connected to the bottom of the main board. The support feet can adjust the height up and down.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] By adding a telescopic rod between the high-transparency tube and the base, by adjusting the length of the telescopic rod extended, the falling height of the steel ball is adjusted up and down, so as to achieve the purpose of allowing the steel ball to fall from different heights. The telescopic rod is located inside the high-transparency tube and can be completely retracted into the high-transparency tube, and will not significantly increase the volume of the device, making the device more flexible and convenient. When adjusting the required height, by rotating the nut, the telescopic rod is clamped to ensure the stability of the device. Brief Description of the Drawings

[0015] Next, with reference to the accompanying drawings, the present utility model will be described in more detail by way of example. In the drawings:

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the cross-sectional structure of the present utility model;

[0018] Figure 3 is a schematic diagram of the cross-sectional structure of the telescopic structure of the present utility model;

[0019] Figure 4 is a schematic diagram of the infrared sensor structure of the present utility model.

[0020] The meanings of the various reference numerals in the drawings are as follows:

[0021] 1, main board; 11, bubble level; 12, sample stage; 13, support plate; 14, vertical board; 15, infrared sensor; 16, support leg; 17, round hole; 18, support frame;

[0022] 2, high-transparency tube; 21, nut; 22, baffle;

[0023] 3, base; 31, rotating shaft; 32, electromagnet; 33, steel ball; 34, telescopic rod; 35, scale;

[0024] 4, main unit. Detailed Description of the Preferred Embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Example: The resilience method is a material mechanics testing method used to measure the elastic modulus or elastic recovery performance of materials. It is commonly used to test the resilience performance of soft materials or plastic materials. The basic principle of the resilience method is to apply a certain force or strain, release this force or strain, and then measure the degree to which the material returns to its initial state. A resilience tester or resilience testing equipment is usually used during the testing process. In the resilience test, the commonly used indicators are the resilience rate or resilience coefficient, which represents the ability of the material to return to its initial state after being subjected to a certain force or strain. The resilience rate can be used to evaluate the elastic recovery performance of the material, that is, to what extent the material can return to its original shape or length after being stressed. This method is widely used in the mechanical property testing of various materials, especially in the fields of soft materials, rubber, plastics, foam materials, etc. It can provide information about the elastic characteristics, energy absorption capacity, deformation behavior, etc. of the material, and is helpful for applications in fields such as engineering design, material selection, and product quality control. Taking the resilience rate of sponge material as an example, the higher the resilience rate, the stronger the ability of the sponge material to return to its original state after being subjected to pressure. This recovery ability is crucial for various applications, such as providing good support force and comfort. In the standard of high resilience sponge, the resilience rate is usually between 50% - 90%.

[0027] As Figures 1-4 shown, the present utility model provides a ball-drop resilience test device with a two-stage or multi-stage telescopic system. The device includes a main board 1. In the middle of the upper surface of the main board 1, a sample stage 12 is fixedly connected. On the front side and the rear side of the upper surface of the main board 1, a plurality of support frames 18 are fixedly connected. The other end of the support frame 18 is fixedly connected to a support plate 13. A round hole 17 is opened in the center of the support plate 13. One end of the high-transparency tube 2 is fixedly connected to the round hole 17. The size of the round hole 17 corresponds to the size of the high-transparency tube 2. The other end of the high-transparency tube 2 is slidably connected to a telescopic rod 34. The top of the telescopic rod 34 is rotatably connected to a base 3. A solenoid 32 is fixedly connected to the bottom of the base 3. A steel ball 33 is adsorbed to the bottom of the solenoid 32. On the right side of the top of the main board 1, a main unit 4 is fixedly connected.

[0028] The improvement in this embodiment lies in that:

[0029] Considering the different standard methods for testing the sample resilience rate or the different heights of the small ball drop in customer requirements, as well as the flexibility of use, therefore, the other end of the high-transparency tube 2 is slidably connected to a telescopic rod 34. The top of the telescopic rod 34 is rotatably connected to a base 3. By adjusting the extended length of the telescopic rod 34, the height of the base 3 can be changed. At this time, the height of the steel ball 33 will also change accordingly, so as to achieve the ability to arbitrarily adjust the drop height of the steel ball 33 and meet customer requirements.

[0030] In order to calculate the height of the ball's rebound more accurately, a vertical plate 14 is fixedly connected to the top of the main board 1. The vertical plate 14 is located between the main unit 4 and the support plate 13. A plurality of infrared sensors 15 are fixedly connected to the upper part of the vertical plate 14. The infrared sensors 15 are evenly and equally spaced. The infrared sensors 15 correspond to the straight line along which the steel ball 33 falls. The even and equal spacing of the infrared sensors 15 facilitates the calculation of the height of the ball's rebound, thereby quickly calculating the rebound rate of the sample.

[0031] Among them, as is known to those skilled in the art, the working principle of the infrared sensor 15 is as follows: The infrared sensor is a sensor that uses the physical properties of infrared rays to measure. Infrared rays, also known as infrared light, have properties such as reflection, refraction, scattering, interference, and absorption. A sensor that uses the physical properties of infrared rays to measure. Any substance, as long as it has a certain temperature (higher than absolute zero), can radiate infrared rays. When the steel ball 33 rebounds, the infrared rays emitted by the infrared sensor 15 detect the steel ball 33. Since the diameter of the steel ball 33 is known, the speed of the steel ball 33 can be calculated based on the time when the infrared rays sense the steel ball 33. When the speed of the steel ball 33 during rebound is zero, it is the maximum height of the steel ball 33's rebound, thereby quickly calculating the rebound rate of the sample.

[0032] Considering that the nut 21 can clamp and stabilize the telescopic rod 34 when it extends to different lengths, a plurality of screw holes corresponding to the nut 21 are provided on the left side surface of the high-transparency tube 2. A plurality of nuts 21 are rotatably connected to the left side surface of the high-transparency tube 2. Each nut 21 is evenly and equally spaced. The plurality of nuts 21 can correspond to the telescopic rod 34 at different positions, thereby ensuring the free expansion and contraction of the telescopic rod 34.

[0033] In order to enable the nut 21 to better fix the telescopic rod 34 after it is stretched to the required position, the nut 21 penetrates through the high-transparency tube 2 and is fixedly connected to the baffle 22 inside the high-transparency tube 2. The baffle 22 is located inside the high-transparency tube 2 and contacts the outer surface of the telescopic rod 34. Rotating the nut 21 pushes the baffle 22 to clamp and fix the telescopic rod 34. The baffle 22 increases the contact area with the telescopic rod 34, thereby stabilizing the telescopic rod 34.

[0034] In order to more clearly know the falling height of the steel ball 33, scale marks 35 are engraved on the outer surface of the telescopic rod 34. The number of scale marks 35 corresponds to the length of the telescopic rod 34 extended. By observing the scale marks 35 on the outer surface of the telescopic rod 34, the length of the telescopic rod 34 extended can be more accurately and intuitively understood, thereby knowing the falling height of the steel ball 33 at this time.

[0035] Considering that it is more convenient to adsorb the steel ball 33 onto the electromagnet 32, therefore, the other end of the high-transparency tube 2 is rotatably connected to a rotating shaft 31, and the rotating shaft 31 is fixedly connected to a base 3. The base 3 is flipped around the rotating shaft 31, the electromagnet 32 is electrified, the steel ball 33 is adsorbed on the electromagnet 32, and then the base 3 is flipped back to ensure that the initial position of the steel ball 33 remains unchanged every time it falls.

[0036] Among them, the electromagnet 32, as known to those skilled in the art, its working principle is: using the current magnetic effect, the iron core and the armature are magnetized to become two magnets with opposite polarities, and an electromagnetic attraction force is generated between them. When the coil is energized, the electromagnetic attraction force adsorbs the steel ball 33. When the current in the coil is less than a certain value or the power supply is interrupted, the electromagnetic attraction force is less than the gravity of the steel ball 33, prompting the steel ball 33 to fall.

[0037] In order to make the entire device in a horizontal position and be able to adapt to various scenarios, therefore, a bubble level 11 is fixedly connected to the left side of the upper surface of the main board 1, and a plurality of feet 16 are fixedly connected to the bottom of the main board 1. The feet 16 can adjust the height up and down. By observing the bubble level 11 and adjusting the height of the feet 16, the entire device is ensured to be in a horizontal state, enabling the small ball to always perform a free-fall motion perpendicular to the ground, which can effectively eliminate the influence of the site during the use of the device.

[0038] In summary, the working principle of this solution is as follows:

[0039] First, the base 3 is flipped around the rotating shaft 31, the electromagnet 32 is electrified, the steel ball 33 is adsorbed on the electromagnet 32, and then the base 3 is flipped back. According to the height of the steel ball 33 required for the test, the extended length of the telescopic rod 34 is adjusted up and down. At the same time, the scale 35 on the surface of the telescopic rod 34 is observed, and the telescopic rod 34 is adjusted to the corresponding position according to the scale 35. The nut 21 is rotated to push the baffle 22 to clamp and stabilize the telescopic rod 34. A plurality of nuts 21 are rotated simultaneously to ensure the stability of the telescopic rod 34. The sample to be tested is placed on the sample stage 12, the electromagnet 32 is powered off, the electromagnet 32 no longer adsorbs the steel ball 33, the steel ball 33 drops, and under the action of gravity, the steel ball 33 collides with the sample to be tested, and the steel ball 33 starts to rebound. The infrared sensor 15 on the side detects the rebound height of the falling ball and calculates the rebound rate. After the test, the nut 21 is rotated to retract the telescopic rod 34 into the high-transparency tube 2, which will not occupy too much space.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A falling ball rebound test device with a two - stage or multi - stage telescopic system, comprising a main board (1), characterized in that: In the middle of the upper surface of the main board (1), a sample stage (12) is fixedly connected. On the front side and the rear side of the upper surface of the main board (1), a plurality of support frames (18) are fixedly connected. The other end of the support frame (18) is fixedly connected to a support plate (13). A circular hole (17) is formed in the center of the support plate (13). One end of the high-transparency tube (2) is fixedly connected to the circular hole (17). The size of the circular hole (17) corresponds to the size of the high-transparency tube (2). The other end of the high-transparency tube (2) is slidably connected to a telescopic rod (34). The top of the telescopic rod (34) is rotatably connected to a base (3). An electromagnet (32) is fixedly connected to the bottom of the base (3). A steel ball (33) is adsorbed to the bottom of the electromagnet (32). A main unit (4) is fixedly connected to the upper right side of the top of the main board (1).

2. The falling ball rebound test device with a two-stage or multi-stage telescopic system according to claim 1, characterized in that: A vertical board (14) is fixedly connected to the top of the main board (1). The vertical board (14) is located between the main unit (4) and the support plate (13). A plurality of infrared sensors (15) are fixedly connected to the upper part of the vertical board (14). The infrared sensors (15) are evenly and equally spaced. The infrared sensors (15) correspond to the straight line along which the steel ball (33) falls.

3. The falling ball rebound test device with a secondary or multi-stage telescopic system according to claim 1, characterized in that: A plurality of screw holes corresponding to nuts (21) are formed in the left side surface of the high-transparency tube (2). A plurality of nuts (21) are rotatably connected to the left side surface of the high-transparency tube (2). Each nut (21) is evenly and equally spaced from each other.

4. The falling ball rebound test device with a two-stage or multi-stage telescopic system according to claim 3, wherein: The nut (21) penetrates through the high-transparency tube (2) and is fixedly connected to a baffle (22) inside the high-transparency tube (2). The baffle (22) is located inside the high-transparency tube (2) and contacts the outer surface of the telescopic rod (34).

5. The falling ball rebound test device with a two-stage or multi-stage telescopic system according to claim 1, characterized in that: A scale (35) is engraved on the outer surface of the telescopic rod (34). The number of the scale (35) corresponds to the length of the telescopic rod (34) extended.

6. The falling ball rebound test device with a two-stage or multi-stage telescopic system according to claim 1, characterized in that: The other end of the telescopic rod (34) is rotatably connected to a rotating shaft (31). The rotating shaft (31) is fixedly connected to the base (3).

7. The falling ball rebound test device with a two-stage or multi-stage telescopic system according to claim 1, characterized in that: A bubble level (11) is fixedly connected to the upper left side of the upper surface of the main board (1). A plurality of support feet (16) are fixedly connected to the bottom of the main board (1). The height of the support feet (16) can be adjusted up and down.

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