Steel ball impact testing device

Abstract

The utility model discloses a steel ball impact test device, which belongs to the technical field of impact test equipment and comprises a test disc for placing a sample to be tested, an impact force sensor is arranged at the bottom of the test disc, a vertical column and a cross beam are arranged on the side surface of the test disc, and the cross beam is connected with the vertical column through a lifting mechanism. The lifting mechanism is used for driving the cross beam to ascend and descend along the stand columns, the free end of the cross beam is provided with a suction cup used for fixing or releasing a steel ball, and the suction cup is arranged over the testing disc and connected with an air source; and a ball receiving mechanism for receiving steel balls is arranged on the side surfaces of the upright post and the lifting mechanism. The steel ball is adsorbed or released through the suction cup at the tail end of the cross beam, the steel ball rebounds upwards under the action of counter-acting force after impacting the testing disc or a sample on the testing disc, and the rebounded steel ball is received in time through the ball receiving mechanism. The ball receiving device is simple and compact in structure and reasonable in design, replaces manual ball receiving, can prevent the steel balls from causing secondary impact on a test disc or a sample, and improves the test accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of impact testing equipment, and in particular relates to a steel ball impact testing device. Background Technology

[0002] In the manufacturing process of electronic products, steel ball impact tests are required on the screen or the entire product to verify whether its strength meets design requirements. Currently, commonly used steel ball impact testing equipment has a design flaw that causes the steel ball to bounce back under the reaction force after the first impact. If the bounced steel ball is not caught in time, it will fall again under gravity, causing a secondary impact on the product. This increases the test error and affects the accuracy of the test. Utility Model Content

[0003] The purpose of this invention is to provide a steel ball impact testing device, which aims to solve the technical problem that if the existing steel ball impact testing equipment fails to catch the rebounding steel ball in time, it will cause a secondary impact on the product and affect the accuracy of the test.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A steel ball impact testing device includes a test plate for placing a sample to be tested. An impact force sensor is provided at the bottom of the test plate. A column and a crossbeam are provided on the side of the test plate. The crossbeam is connected to the column via a lifting mechanism. The lifting mechanism is used to drive the crossbeam to move up and down along the column. A suction cup for fixing or releasing a steel ball is provided at the free end of the crossbeam. The suction cup is located directly above the test plate and is connected to an air source. A ball receiving mechanism for receiving the steel ball is provided on the side of the column and the lifting mechanism.

[0006] Preferably, the ball receiving mechanism includes a ball receiving plate, a translation component, and a lifting component. The ball receiving plate is connected to the mounting frame via the translation component, which drives the ball receiving plate to translate left and right. The mounting frame is connected to the lifting component, which drives the mounting frame and the ball receiving plate to move up and down. The ball receiving plate has upright eaves around its perimeter.

[0007] Preferably, the translation component is a rodless cylinder, which can slide along the slide bar at the bottom of the mounting frame, the free end of the ball receiving plate extends to the bottom of the crossbeam, and the connecting end of the ball receiving plate is connected to the rodless cylinder.

[0008] Preferably, the lifting assembly includes a support column and a lifting rod and a lifting block inside it. The mounting frame is connected to the lifting block, the lifting block is threadedly engaged with the lifting rod, and the upper end of the lifting rod is provided with a hand crank, which extends to the outer side of the top of the support column.

[0009] Preferably, the lifting mechanism includes a motor, a lead screw, and a slider. The lead screw is arranged parallel to the column, the motor is located at the end of the lead screw, the output end of the motor is connected to the lead screw, the connecting end of the crossbeam is connected to the slider, and the slider is threadedly engaged with the lead screw.

[0010] Preferably, there are two columns, the lead screw is disposed between the two columns, the connecting end of the crossbeam is provided with a guide hole that cooperates with the column, an installation hole is provided between the two guide holes on the crossbeam, and the slider is disposed in the installation hole.

[0011] Preferably, the outer side of the column and the lead screw is provided with a cuboid protective cover with the upper end sealed. The rear and sides of the protective cover are fixed protective plates, the front side of the protective cover is a telescopic protective plate, and the crossbeam is set through the telescopic protective plate.

[0012] Preferably, the bottom of the crossbeam is provided with a limiting rod, the limiting rod is L-shaped, the long side of the limiting rod is fixed to the bottom of the crossbeam, and the short side of the limiting rod is in close contact with the fixed side plate on one side of the protective cover.

[0013] Preferably, the test plate, column, lifting mechanism and ball receiving mechanism are all set on the operating table, and the operating table is surrounded by upright barriers.

[0014] Preferably, the operating console is located on the top of the control box, the enclosure is located around the top of the control box, the impact sensor is located inside the control box, and the front of the control box is provided with a power switch connected to the impact sensor and control buttons connected to the lifting mechanism and the ball receiving mechanism.

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

[0016] This invention uses a suction cup at the end of a crossbeam to attract or release a steel ball. The released steel ball impacts the sample on the test plate, and the ball rebounds upwards under the reaction force. A ball-catching mechanism catches the rebounding steel ball in time. This invention has a simple and compact structure and a reasonable design. It replaces manual ball catching, avoids secondary impacts from the steel ball on the test plate or sample, and improves test accuracy. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the structure of a steel ball impact testing device provided in an embodiment of this utility model;

[0020] Figure 2 for Figure 1 View A in the middle;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the protective cover and support column in an embodiment of this utility model;

[0022] In the picture:

[0023] 00-Steel ball; 1-Test plate; 2-Column; 3-Crossbeam; 4-Suction cup; 5-Ball receiving plate; 6-Mounting bracket; 7-Transfer assembly; 8-Gantry frame; 9-Support column; 10-Hand crank; 11-Motor; 12-Lead screw; 13-Slider; 14-Guard cover; 15-Telescopic guard plate; 16-Limit rod; 17-Operating table; 18-Enclosure; 19-Control box; 20-Power switch; 21-Control button; 22-Lifting rod; 23-Lifting block. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. In the following detailed description of the invention, certain specific details are described in detail. However, those skilled in the art will fully understand the invention for any parts not described in detail.

[0025] Furthermore, those skilled in the art should understand that the accompanying drawings are provided only to illustrate the purpose, features, and advantages of the present invention, and are not actually drawn to scale.

[0026] Furthermore, unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to."

[0027] like Figure 1 , Figure 2 and Figure 3As shown in the figure, the steel ball impact testing device provided in this embodiment includes a test plate 1 for placing the sample to be tested. An impact force sensor (not shown) is provided at the bottom of the test plate 1. A column 2 and a crossbeam 3 are provided on the side of the test plate 1. The crossbeam 3 is connected to the column 2 via a lifting mechanism, which drives the crossbeam 3 to move up and down along the column 2. A suction cup 4 for fixing or releasing a steel ball is provided at the free end of the crossbeam 3. The suction cup 4 is positioned directly above the test plate 1 and connected to an air source. A ball-catching mechanism is provided on the side of the column 2 and the lifting mechanism for receiving the steel ball. The suction cup's adsorption or release of the steel ball is controlled by controlling the air source, and the height of the released steel ball is adjusted by the lifting mechanism for testing. The ball-catching mechanism can promptly catch the bouncing steel ball, avoiding secondary impact on the test plate or sample and improving testing accuracy.

[0028] As a preferred structure, such as Figure 2 As shown, the ball-catching mechanism includes a ball-catching plate 5, a translation component 7, and a lifting component. The ball-catching plate 5 is connected to the mounting frame 6 via the translation component 7, which drives the ball-catching plate 5 to move left and right. The mounting frame 6 is connected to the lifting component, which drives the mounting frame 6 and the ball-catching plate 5 to move up and down. The ball-catching plate 5 has upright protruding edges around its perimeter. The cooperation of the translation component and the lifting component enables the ball-catching plate to move left and right and up and down, facilitating timely catching of the steel ball.

[0029] In the specific production process, such as Figure 1 , 2 As shown, the translation component 7 is a rodless cylinder. This rodless cylinder can slide along the sliding rod at the bottom of the mounting frame 6 and the bottom of the frame 8. The free end of the ball receiving plate 5 extends below the crossbeam 3, and the connecting end of the ball receiving plate 5 is connected to the rodless cylinder. The rodless cylinder can be used to drive the ball receiving plate to move quickly left and right. Of course, the translation component is not limited to a rodless cylinder; electric push rods, hydraulic rods, or lead screw drives can also be used to achieve left and right translation of the ball receiving plate.

[0030] like Figure 3 As shown, the lifting assembly includes a support column 9 and its internal lifting rod 22 and lifting block 23. The two sides of the mounting bracket 6 are connected to the lifting block 23 via connectors (not shown in the figure). The support column 9 has sliding grooves on both sides for the connectors to move up and down. The lifting block 23 is threadedly engaged with the lifting rod. A hand crank 10 is located at the upper end of the lifting rod 22, extending to the outer top of the support column 9. Rotating the lifting rod via the hand crank causes the lifting block and the ball receiving plate to move up and down; simultaneously, the translation component allows for flexible adjustment of the ball receiving plate position. Of course, the lifting assembly is not limited to the above structure; it can also achieve ball receiving plate lifting via worm gear or rack and pinion transmission, or use a motor instead of a hand crank for automatic lifting.

[0031] In specific embodiments of this utility model, such as Figure 1 , 3 As shown, the lifting mechanism includes a motor 11, a lead screw 12, and a slider 13. The lead screw 12 is arranged parallel to the column 2, and the motor 11 is located at the end of the lead screw 12. The output end of the motor 11 is connected to the lead screw 12. The connecting end of the crossbeam 3 is connected to the slider 13, and the slider 13 is threadedly engaged with the lead screw 12. In a specific design, there are two columns 2, and the lead screw 12 is positioned between the two columns 2. The connecting end of the crossbeam 3 has a guide hole that mates with the column 2, and a mounting hole is provided between the two guide holes on the crossbeam 3. The slider 13 is positioned within the mounting hole. The height of the slider and the crossbeam is controlled by the motor and adjusted according to the experimental requirements. The cooperation between the two columns and the crossbeam improves the stability of the structure. The lifting of the crossbeam is achieved by lead screw transmission, and the rapid lifting of the crossbeam is achieved by motor drive.

[0032] Further optimize the above structure, such as Figure 1 As shown, the column 2 and the lead screw 12 are provided with a rectangular protective cover 14 with an upper end sealed on the outside. The rear and sides of the protective cover 14 are fixed protective plates, and the front of the protective cover 14 is a telescopic protective plate 15. The crossbeam 3 is installed through the telescopic protective plate 15. The protective cover with this structure can protect the internal structure and prevent it from being contaminated by the outside world. Among them, the telescopic protective plate can be a telescopic protective cover, which is widely used in existing machine tools.

[0033] like Figure 1 As shown, a limiting rod 16 is provided at the bottom of the crossbeam 3. The limiting rod 16 is L-shaped, with its long side fixed to the bottom of the crossbeam 3 and its short side in close contact with the fixed side plate of the protective cover 14. The limiting rod 16 is used to limit the crossbeam 3 and prevent it from tilting left or right during lifting.

[0034] In specific embodiments of this utility model, such as Figure 1 , 2 As shown, the test plate 1, column 2, lifting mechanism, and ball-catching mechanism are all mounted on the operating platform 17. The operating platform 17 is surrounded by upright barriers 18, which limit the movement of the bouncing steel ball, preventing it from accidentally impacting other people or objects. The operating platform 17 is located on top of the control box 19, and the barriers 18 are positioned around the top of the control box 19. The impact sensor is located inside the control box 19. The front of the control box 19 has a power switch 20 connected to the impact sensor and control buttons 21 connected to the lifting mechanism and ball-catching mechanism.

[0035] Furthermore, to improve the automation level of the testing equipment, the above scheme can be further optimized. A controller capable of controlling the lifting and ball-catching mechanisms can be installed inside the control box, and a camera can be set up inside the enclosure. The impact sensor, camera, lifting mechanism, and ball-catching mechanism are all connected to the controller, enabling automatic recording and analysis of impact data. After the steel ball falls and bounces, the controller promptly controls the ball-catching plate to automatically shift according to the ball's landing point. According to the test requirements, the steel ball needs to be released twice to complete the impact test. The specific test process is as follows:

[0036] 1) The steel ball is released for the first time to impact the test plate, and then the ball receiving mechanism catches the rebounding steel ball; the impact force sensor records the maximum impact force, and the program in the controller will obtain the original impact energy.

[0037] 2) Place the sample to be tested on the test plate. Release the steel ball a second time to impact the sample on the test plate. The impact force sensor records the second impact force, and the program in the controller will calculate the impact energy absorbed by the sample. The controller will control the ball receiving mechanism to catch or not catch the ball (because the steel ball does not bounce after impacting part of the sample, this can be determined according to the specific sample).

[0038] 3) The energy absorption ratio of the sample is calculated by analyzing the two impact data through the controller and comparing the energy of the second impact with that of the first impact.

[0039] In summary, this invention features a simple and compact structure with a reasonable design. A suction cup at the end of the crossbeam adsorbs or releases a steel ball. The released steel ball impacts the test plate or the sample on it and then bounces upwards. A ball-catching mechanism promptly catches the bouncing steel ball, preventing it from falling back and causing secondary impacts on the sample on the test plate, thus affecting the accuracy of the impact data. Using this invention instead of manual ball catching avoids secondary impacts from the steel ball on the test plate or sample, improving test accuracy.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A steel ball impact testing device, characterized in that: The test includes a test tray for placing the sample to be tested. An impact sensor is located at the bottom of the test tray. A column and a crossbeam are located on the side of the test tray. The crossbeam is connected to the column via a lifting mechanism, which drives the crossbeam to move up and down along the column. A suction cup for fixing or releasing a steel ball is located at the free end of the crossbeam. The suction cup is positioned directly above the test tray and connected to an air source. A ball-receiving mechanism is located on the side of the column and the lifting mechanism to receive the steel ball. The ball receiving mechanism includes a ball receiving plate, a translation component, and a lifting component. The ball receiving plate is connected to the mounting frame via the translation component, which drives the ball receiving plate to translate left and right. The mounting frame is connected to the lifting component, which drives the mounting frame and the ball receiving plate to move up and down. The ball receiving plate has upright eaves around its perimeter.

2. The steel ball impact testing device according to claim 1, characterized in that: The translation component is a rodless cylinder, which can slide along the slide bar at the bottom of the mounting frame. The free end of the ball receiving plate extends to the bottom of the crossbeam, and the connecting end of the ball receiving plate is connected to the rodless cylinder.

3. The steel ball impact testing device according to claim 1, characterized in that: The lifting assembly includes a support column and a lifting rod and a lifting block inside it. The mounting bracket is connected to the lifting block. The lifting block is threadedly engaged with the lifting rod. The upper end of the lifting rod is provided with a hand crank, which extends to the top outer side of the support column.

4. The steel ball impact testing device according to claim 1, characterized in that: The lifting mechanism includes a motor, a lead screw, and a slider. The lead screw is arranged parallel to the column, the motor is located at the end of the lead screw, the output end of the motor is connected to the lead screw, the connecting end of the crossbeam is connected to the slider, and the slider is threadedly engaged with the lead screw.

5. The steel ball impact testing device according to claim 4, characterized in that: The column consists of two pillars, the lead screw is positioned between the two pillars, the connecting end of the crossbeam is provided with a guide hole that mates with the pillar, an installation hole is provided between the two guide holes on the crossbeam, and the slider is positioned within the installation hole.

6. The steel ball impact testing device according to claim 5, characterized in that: The column and lead screw are provided with a rectangular protective cover with an upper end sealed on the outside. The rear and sides of the protective cover are fixed protective plates, and the front of the protective cover is a telescopic protective plate. The crossbeam is set through the telescopic protective plate.

7. The steel ball impact testing device according to claim 6, characterized in that: The bottom of the crossbeam is provided with a limiting rod, which is L-shaped. The long side of the limiting rod is fixed to the bottom of the crossbeam, and the short side of the limiting rod is in close contact with the fixed side plate on one side of the protective cover.

8. A steel ball impact testing device according to any one of claims 1-7, characterized in that: The test panel, column, lifting mechanism and ball receiving mechanism are all mounted on the operating platform, which is surrounded by upright barriers.

9. The steel ball impact testing device according to claim 8, characterized in that: The control panel is located on the top of the control box, the enclosure is located around the top of the control box, the impact sensor is located inside the control box, and the front of the control box is equipped with a power switch connected to the impact sensor and control buttons connected to the lifting mechanism and the ball receiving mechanism.

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