Secondary impact protection structure and falling ball impact testing machine.

Abstract

This application relates to a secondary impact protection structure and a falling ball impact testing machine having the same. The secondary impact protection structure includes a support plate, a pusher, a photoelectric switch, and a receiving component. The pusher is connected to the support plate. The photoelectric switch is electrically connected to the pusher. The receiving component is used to receive steel balls and includes a first baffle, a second baffle, a third baffle, a base plate, and multiple deceleration protrusions. The first baffle is connected to the pusher, and the second and third baffles are both connected to the first baffle and are arranged opposite to each other. The base plate is connected to the first, second, and third baffles, and the base plate gradually slopes downwards along the direction closest to the first baffle. The multiple deceleration protrusions are arranged in an array on the base plate. The technical solution of this application effectively solves the problem of instability and easy rolling of steel balls during steel ball reception in the prior art.

Description

Technical Field

[0001] This application relates to the technical field of drop ball testing, and more specifically, to a secondary impact protection structure and a drop ball impact testing machine having the same. Background Technology

[0002] When conducting drop ball impact tests on certain materials, a specialized drop ball impact testing machine is required. After the drop ball impacts the specimen, various factors, such as the rebound of the ball and deviations in the ball's trajectory caused by the testing machine, often result in a secondary impact. This secondary impact can cause additional deformation or damage to the specimen, causing the measured impact energy absorption value and degree of damage to deviate from the true values. Furthermore, the secondary impact may damage the drop ball impact testing machine itself, shortening its service life and increasing maintenance costs.

[0003] To address the aforementioned problems, some existing devices (e.g., patent number CN 215262920U, entitled "A Drop Ball Release Frame for Drop Ball Impact Test") include a placement plate with a testing mechanism and a protection mechanism on its top. The testing mechanism consists of a test chamber located at the center of the top of the placement plate, a test lamp inside the test chamber, an L-shaped plate directly behind the test lamp on the top of the placement plate, an electromagnet control box, an electromagnet body, and a steel ball attracted to the electromagnet body. The protection mechanism consists of an electric push rod, a support plate fixed to the electric push rod, and a photoelectric switch. When the release button of the electromagnet control box is pressed, the device starts. When the photoelectric switch detects the first drop of the steel ball, a count of 1 is generated. After the steel ball lands on the test lamp and bounces, when the photoelectric switch detects the first bounce, the electric push rod extends, and the support plate with an arc-shaped groove catches the steel ball, protecting the test lamp from abnormal impacts. By catching the steel ball, secondary impacts are prevented.

[0004] However, because the arc groove is shallow, the steel ball is prone to rolling out when the electric push rod extends. If the arc groove is made deeper, it is easy for the arc groove to come into contact with the specimen. If the height of the arc groove is increased to avoid contact with the specimen and the depth is increased to prevent the steel ball from rolling off, the height of the steel ball when it bounces off the arc groove is not high enough to reach the height of the arc groove, and thus the steel ball cannot be caught. Utility Model Content

[0005] This application provides a secondary impact protection structure and a ball drop impact testing machine having the same, to solve the problem in the prior art that the steel ball is unstable when it is caught and the steel ball is easy to roll off.

[0006] A secondary impact protection structure according to this application includes a support plate, a pusher, a photoelectric switch, and a receiving component. The pusher is connected to the support plate. The photoelectric switch is electrically connected to the pusher. The receiving component is used to receive steel balls and includes a first baffle, a second baffle, a third baffle, a base plate, and multiple deceleration protrusions. The first baffle is connected to the pusher, and the second and third baffles are both connected to the first baffle and are arranged opposite to each other. The base plate is connected to the first, second, and third baffles, and the base plate gradually slopes downward along the direction close to the first baffle. The multiple deceleration protrusions are arranged in an array on the base plate.

[0007] In some embodiments, the receiving element further includes a shock-absorbing pad, which is installed on the side of the first baffle away from the pusher.

[0008] In some embodiments, the secondary impact protection structure further includes two sets of linear guide rails and two sets of guide rail sliders. Two sets of support plates are provided, and the two sets of support plates are arranged opposite to each other. Both ends of the two sets of linear guide rails are respectively connected to the two sets of support plates. The two sets of guide rail sliders and the two sets of linear guide rails are arranged in a one-to-one correspondence. The two sets of guide rail sliders are respectively connected to the second baffle and the third baffle.

[0009] In some embodiments, the actuating element is a long-stroke electromagnet actuator, an electric actuator, or a cylinder.

[0010] This application also provides a falling ball impact testing machine, which includes a secondary impact protection structure.

[0011] In some embodiments, the falling ball impact testing machine further includes a support base, a first support rod, and a second support rod. The first support rod is disposed on the support base, and the second support rod is disposed on the first support rod. The first support rod and the second support rod are arranged vertically.

[0012] In some embodiments, the falling ball impact testing machine further includes a placement platform located on a support base, the placement platform being used to place the specimen.

[0013] In some embodiments, the falling ball impact testing machine further includes an electromagnet, a steel ball, and an electromagnet control box. The electromagnet is mounted on a second support rod, the steel ball is attracted to the electromagnet, and the steel ball faces the placement platform. The electromagnet control box is mounted on a first support rod, and the electromagnet and the electromagnet are electrically connected.

[0014] In some embodiments, the falling ball impact testing machine further includes a laser positioner mounted on an electromagnet and facing the placement platform.

[0015] In some embodiments, both the support plate and the photoelectric switch are mounted on the support base, with the photoelectric switch located between the first support rod and the placement platform, facing the placement platform.

[0016] Using the technical solution of this application, the photoelectric switch transmits the detected signal to the pushing component, which then begins to operate upon receiving the signal. The pushing component moves the first baffle, thereby moving the entire receiving component to receive the steel ball. The second and third baffles are both connected to the first baffle and are arranged opposite each other. This arrangement aims to block the steel ball and prevent it from rolling off. The base plate is connected to the first, second, and third baffles, and gradually tilts downwards towards the first baffle. After the steel ball falls onto the base plate, it rolls along the base plate until it comes into contact with the first baffle and stops. Multiple deceleration protrusions are arrayed on the base plate to slow down the steel ball, preventing excessive impact between the steel ball and the first baffle and preventing the steel ball from rebounding. The technical solution of this application effectively solves the problems of instability and easy rolling off of steel balls in the prior art. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the falling ball impact testing machine according to Embodiment 1 of this application is shown;

[0020] Figure 2 It shows Figure 1 A magnified structural diagram of point A in the middle.

[0021] The above figures include the following reference numerals:

[0022] 10. Secondary impact protection structure; 11. Support plate; 12. Pushing component; 13. Photoelectric switch; 14. Receiving component; 141. First baffle; 142. Second baffle; 143. Third baffle; 144. Base plate; 145. Deceleration protrusion; 146. Shock-absorbing pad; 15. Linear guide rail; 16. Guide rail slider; 20. Support base; 30. First support rod; 40. Second support rod; 50. Placement platform; 60. Electromagnet; 70. Steel ball; 80. Electromagnet control box; 90. Laser positioner; 100. Specimen. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] like Figure 1 and Figure 2 As shown, Embodiment 1 relates to a secondary impact protection structure, including: a support plate 11, a pusher 12, a photoelectric switch 13, and a receiving component 14. The pusher 12 is connected to the support plate 11; the photoelectric switch 13 is electrically connected to the pusher 12. The receiving component 14 is used to receive steel balls 70. The receiving component 14 includes a first baffle 141, a second baffle 142, a third baffle 143, a base plate 144, and multiple deceleration protrusions 145. The first baffle 141 is connected to the pusher 12. The second baffle 142 and the third baffle 143 are both connected to the first baffle 141, and the second baffle 142 and the third baffle 143 are arranged opposite to each other. The base plate 144 is connected to the first baffle 141, the second baffle 142, and the third baffle 143. The base plate 144 gradually tilts downward along the direction close to the first baffle 141. The multiple deceleration protrusions 145 are arranged in an array on the base plate 144.

[0027] The secondary impact protection structure, applying the technical solution of Embodiment 1, includes a support plate 11, a pusher 12, a photoelectric switch 13, and a receiving component 14. The pusher 12 is connected to the support plate 11, and the photoelectric switch 13 is electrically connected to the pusher 12. The photoelectric switch 13 transmits the detected signal to the pusher 12, and the pusher 12 begins operation upon receiving the signal. The receiving component 14 is used to receive the steel ball 70. The receiving component 14 includes a first baffle 141, a second baffle 142, a third baffle 143, a base plate 144, and multiple deceleration protrusions 145. The first baffle 141 is connected to the pusher 12. The pusher 12 pushes the first baffle 141 to move, thereby moving the entire receiving component 14 to receive the steel ball 70. The second baffle 142 and the third baffle 143 are both connected to the first baffle 141, and are arranged opposite to each other. This arrangement aims to block the steel ball 70 and prevent it from rolling off. The base plate 144 is connected to the first baffle 141, the second baffle 142, and the third baffle 143, and the base plate 144 gradually tilts downwards towards the first baffle 141. After the steel ball 70 falls onto the base plate 144, it rolls along the base plate 144 until it comes into contact with the first baffle 141 and stops. Multiple deceleration protrusions 145 are arranged in an array on the base plate 144. The deceleration protrusions 145 decelerate the steel ball 70, preventing the impact between the steel ball 70 and the first baffle 141 from being too violent, and also preventing the steel ball 70 from rebounding. The technical solution of this embodiment effectively solves the problem of instability and easy rolling off of the steel ball 70 when it is caught in the prior art.

[0028] like Figure 2 As shown, in the technical solution of Embodiment 1, the receiving component 14 further includes a shock-absorbing pad 146, which is installed on the side of the first baffle 141 opposite to the pusher 12. The shock-absorbing pad 146 and the deceleration protrusion 145 are made of rubber or plastic. The shock-absorbing pad 146 can prevent the steel ball 70 from impacting the first baffle 141 too violently.

[0029] like Figure 1 and Figure 2 As shown, in the technical solution of Embodiment 1, the secondary impact protection structure also includes two sets of linear guide rails 15 and two sets of guide rail sliders 16. Two sets of support plates 11 are provided, and the two sets of support plates 11 are arranged opposite to each other. The two ends of the two sets of linear guide rails 15 are respectively connected to the two sets of support plates 11. The two sets of guide rail sliders 16 and the two sets of linear guide rails 15 are arranged in a one-to-one correspondence. The two sets of guide rail sliders 16 are respectively connected to the second baffle 142 and the third baffle 143. During the movement of the second baffle 142 and the third baffle 143, the guide rail sliders 16 are driven to move synchronously along the linear guide rails 15. This arrangement makes the receiving part 14 more stable during the movement.

[0030] like Figure 1As shown, in the technical solution of Embodiment 1, the pushing component 12 is a long-stroke electromagnet actuator. The secondary impact protection structure 10 also includes a connecting rod. The outer shell of the long-stroke electromagnet actuator is connected to the support plate 11 through the connecting rod, or it can be directly connected to the support plate 11. The moving iron core of the long-stroke electromagnet actuator is directly connected to the first baffle 141.

[0031] like Figure 1 As shown, Embodiment 1 also relates to a falling ball impact testing machine, which includes a secondary impact protection structure 10.

[0032] like Figure 1 As shown, in the technical solution of Embodiment 1, the falling ball impact testing machine further includes a support base 20, a first support rod 30, and a second support rod 40. The first support rod 30 is disposed on the support base 20, and the second support rod 40 is disposed on the first support rod 30. The first support rod 30 and the second support rod 40 are arranged perpendicularly. The second support rod 40 is fixed to the first support rod 30 by bolts and nuts. The first support rod 30 has multiple mounting holes along its axial direction, which can be used to adjust the installation height of the second support rod 40.

[0033] like Figure 1 As shown, in the technical solution of Embodiment 1, the falling ball impact testing machine also includes a placement platform 50, which is located on the support base 20. The placement platform 50 is used to place the sample, and in this embodiment, the sample is glass.

[0034] like Figure 1 As shown, in the technical solution of Embodiment 1, the falling ball impact testing machine further includes an electromagnet 60, a steel ball 70, and an electromagnet control box 80. The electromagnet 60 is mounted on the second support rod 40, and the steel ball 70 is attracted to the electromagnet 60 with its direction towards the placement platform 50. The electromagnet control box 80 is mounted on the first support rod 30 and is electrically connected to the electromagnet 60. The electromagnet control box 80 controls the attraction of the electromagnet 60 to the steel ball 70, thereby controlling the falling ball impact test.

[0035] like Figure 1 As shown, in the technical solution of Embodiment 1, the falling ball impact testing machine further includes a laser positioner 90. The laser positioner 90 is mounted on the electromagnet 60, facing the placement platform 50, and is used to position the specimen 100 on the placement platform 50. The laser positioner 90 is fixed to the outer shell of the electromagnet.

[0036] like Figure 1As shown, in the technical solution of Embodiment 1, both the support plate 11 and the photoelectric switch 13 are mounted on the support base 20. The photoelectric switch 13 is located between the first support rod 30 and the placement platform 50, facing towards the placement platform 50. The photoelectric switch 13 is used to detect the number of times the steel ball 70 falls. The photoelectric switch 13 is positioned higher than the receiving component 14.

[0037] The specific workflow is as follows: During the ball drop test, the laser locator 90 is activated for precise positioning. After the specimen 100 is placed, the electromagnet 60 is controlled by the electromagnet control box 80 to control the fall of the steel ball 70. During the fall of the steel ball 70, the photoelectric switch 13 detects the steel ball 70 once. The steel ball 70 continues to fall until it collides with the specimen 100. After the collision, the steel ball 70 rebounds, and the photoelectric switch 13 detects the steel ball 70 a second time. The photoelectric switch 13 sends a signal to the pusher 12. Upon receiving the signal, the pusher starts working, pushing the receiving component 14 to move and catch the steel ball 70. Because the photoelectric switch 13 is positioned higher than the receiving component 14, the time required for the steel ball 70 to fall to the height of the receiving component 14 after being detected a second time by the photoelectric switch 13 is less than the time required for the receiving component 14 to move directly below the steel ball 70. Therefore, the receiving component 14 can accurately catch the steel ball 70.

[0038] It should be noted that the falling ball impact testing machine also includes a sensor and an analysis module. The sensor is used to record parameters such as the impact force failure mode, and the analysis module is used to analyze the degree of damage to the sample, such as cracks and fractures, and to comprehensively judge the impact resistance of the material. The above are all existing technologies and will not be elaborated here.

[0039] The difference between the technical solution of Embodiment 2 and Embodiment 1 is that the pusher 12 is an electric push rod, the outer shell of the electric push rod is directly connected to the support plate 11, or is connected to the support plate 11 through a connecting rod, and the push rod of the electric push rod is connected to the first baffle 141.

[0040] The difference between the technical solution of Embodiment 3 and Embodiment 1 is that the pusher 12 is a cylinder, the cylinder body is directly connected to the support plate 11, or connected to the support plate 11 through a connecting rod, and the cylinder rod is connected to the first baffle 141.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A secondary impact protection structure, characterized in that, include Support plate (11); A pusher (12) is connected to the support plate (11); A photoelectric switch (13) is electrically connected to the pusher (12); A receiving component (14) is used to receive steel balls (70). The receiving component (14) includes a first baffle (141), a second baffle (142), a third baffle (143), a base plate (144), and a plurality of deceleration protrusions (145). The first baffle (141) is connected to the pusher (12). The second baffle (142) and the third baffle (143) are both connected to the first baffle (141), and the second baffle (142) and the third baffle (143) are arranged opposite to each other. The base plate (144) is connected to the first baffle (141), the second baffle (142), and the third baffle (143). The base plate (144) gradually tilts downward along the direction close to the first baffle (141). The plurality of deceleration protrusions (145) are arranged in an array on the base plate (144).

2. The secondary impact protection structure according to claim 1, characterized in that, The receiving component (14) also includes a shock-absorbing pad (146), which is installed on the side of the first baffle (141) away from the pusher (12).

3. The secondary impact protection structure according to claim 1, characterized in that, The secondary impact protection structure also includes two sets of linear guide rails (15) and two sets of guide rail sliders (16). The support plate (11) is provided in two sets, and the two sets of support plates (11) are arranged opposite to each other. Both ends of the two sets of linear guide rails (15) are respectively connected to the two sets of support plates (11). The two sets of guide rail sliders (16) and the two sets of linear guide rails (15) are arranged in a one-to-one correspondence. The two sets of guide rail sliders (16) are respectively connected to the second baffle (142) and the third baffle (143).

4. The secondary impact protection structure according to claim 1, characterized in that, The pusher (12) is a long-stroke electromagnet pusher, electric push rod, or cylinder.

5. A falling ball impact testing machine, characterized in that, The falling ball impact testing machine includes a secondary impact protection structure (10), which is the secondary impact protection structure (10) according to any one of claims 1 to 4.

6. The falling ball impact testing machine according to claim 5, characterized in that, The falling ball impact testing machine also includes a support base (20), a first support rod (30) and a second support rod (40). The first support rod (30) is disposed on the support base (20), and the second support rod (40) is disposed on the first support rod (30). The first support rod (30) and the second support rod (40) are arranged vertically.

7. The falling ball impact testing machine according to claim 6, characterized in that, The falling ball impact testing machine also includes a placement platform (50), which is located on the support base (20) and is used to place the sample.

8. The falling ball impact testing machine according to claim 7, characterized in that, The falling ball impact testing machine also includes an electromagnet (60), a steel ball (70), and an electromagnet control box (80). The electromagnet (60) is mounted on the second support rod (40), and the steel ball (70) is attracted to the electromagnet (60). The steel ball (70) faces the placement platform (50). The electromagnet control box (80) is mounted on the first support rod (30), and the electromagnet control box (80) and the electromagnet (60) are electrically connected.

9. The falling ball impact testing machine according to claim 8, characterized in that, The ball impact testing machine also includes a laser positioner (90), which is mounted on the electromagnet (60) and faces the placement platform (50).

10. The falling ball impact testing machine according to claim 7, characterized in that, The support plate (11) and the photoelectric switch (13) are both disposed on the support base (20). The photoelectric switch (13) is located between the first support rod (30) and the placement platform (50) and is disposed towards the placement platform (50).

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