Ball free falling body testing device

Abstract

The invention discloses a ball free fall testing device, which comprises a lifting mechanism, a testing mechanism, a first conveying mechanism and a second conveying mechanism, and is characterized in that the lifting mechanism is used for driving a ball to ascend from a first position to a second position; the testing mechanism is used for putting down the ball from the third position, so that the ball freely falls; the first conveying mechanism is used for conveying balls from a first position to a third position, and the second conveying mechanism is used for conveying balls falling from the testing mechanism to the first position; wherein the testing mechanism comprises a testing cavity and a cleaning cavity, the third position is located in the testing cavity, a first rebounding plate used for rebounding a ball falling from the third position is arranged below the third position, and the first rebounding plate can move to exit from the cleaning cavity and enter the testing cavity, or exit from the testing cavity and enter the cleaning cavity; the first cleaning assembly used for cleaning the first rebound plate is arranged in the cleaning cavity, the first rebound plate is cleaned through the first cleaning assembly, and the reliability of the test result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ball testing, in particular to a ball free-fall testing device. Background Art

[0002] As a sporting good, the roundness and elastic coefficient of the ball will directly affect the performance of the ball during use.

[0003] At present, the existing ball free fall test device has the following defects: during the free fall test, the ball to be tested is generally lifted to the required height multiple times manually and then dropped down. The test results are greatly affected by human factors and are prone to test errors. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a ball free fall testing device to solve the technical problem that during the free fall test, the ball to be tested is generally lifted to the required height multiple times by manual means and then lowered, and the test results are greatly affected by manual factors, which is prone to test errors.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides a ball free-fall testing device, comprising: an ascending mechanism, a testing mechanism, a first conveying mechanism, and a second conveying mechanism. The ascending mechanism is used to drive a ball from a first position to a second position; the testing mechanism is used to lower the ball from a third position to cause it to freely fall; the first conveying mechanism is used to convey the ball from the first position to the third position, and the second conveying mechanism is used to convey the ball dropped from the testing mechanism to the first position. In which, the testing mechanism includes a testing chamber and a cleaning chamber, the third position is located inside the testing chamber, and a first rebound plate is provided below the third position for rebounding the ball falling from the third position. The first rebound plate can be moved to exit the cleaning chamber and enter the testing chamber, or to exit the testing chamber and enter the cleaning chamber; a first cleaning component for cleaning the first rebound plate is provided in the cleaning chamber.

[0006] It also includes a first ball pushing assembly, which is used to move the ball from the second position to the first conveying mechanism.

[0007] In which, the lifting mechanism includes a first drive component, a first transmission component and a supporting member; the first drive component is used to provide power to the first transmission component; the first transmission component is used to convert input energy into linear motion so that its moving part moves between the first position and the second position; the supporting member is arranged on the moving part of the transmission component and is used to support the sphere.

[0008] Among them, the first conveying mechanism includes a second drive component and a second transmission component; the second drive component is used to provide power to the second transmission component; the second transmission component is used to convert input energy into linear motion so that its moving end moves between the second position and the third position.

[0009] In which, the testing mechanism includes a pause component arranged at the third position, and the pause component is used to receive the ball transmitted by the first conveying mechanism; when the pause component receives a release signal, the pause component releases the ball it receives, so that the ball performs free fall motion with the pause component as the starting point.

[0010] The pause component is provided with a receiving groove for accommodating the ball, and a movable stopping component is provided at the bottom of the receiving groove; the stopping component has a first state and a second state; When the stop assembly is in the first state, the bottom of the accommodating groove is closed and provides an upward supporting force for the ball, and the ball is accommodated in the accommodating groove; When the stop assembly is in the second state, the supporting force of the bottom of the accommodating groove on the ball is released and conducted downward, and the ball passes through the accommodating groove and performs free fall downward.

[0011] The testing mechanism further includes a testing component disposed in the testing cavity, and the testing component is used to monitor the movement path of the sphere.

[0012] In which, a first screw for driving the first rebound plate to move is provided in the cleaning chamber, and the first rebound plate is provided with a first threaded hole, and the first screw is threadedly engaged with the first threaded hole; when the first screw rotates, the first rebound plate exits the cleaning chamber in a horizontal direction and enters the test chamber, or exits the test chamber and enters the cleaning chamber.

[0013] Wherein, the first cleaning assembly includes a first bevel gear provided on the first screw, a first cleaning plate provided above the first screw, the first cleaning plate rotatably provided with a second bevel gear, the first bevel gear meshing with the second bevel gear; the second bevel gear is connected to a first transmission gear, the first cleaning plate is also rotatably provided with a plurality of second transmission gears, the plurality of second transmission gears meshing with each other or with the first transmission gear; the plurality of second transmission gears are each connected to a first cleaning member on one side facing the first screw, the first cleaning member extending downward to the moving path of the first rebound plate; When the first screw rotates, it drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first transmission gear to rotate, the first transmission gear directly or indirectly drives multiple second transmission gears to rotate, and the multiple second transmission gears respectively drive their respective first cleaning members to perform cleaning work on the moving first rebound plate.

[0014] A second rebound plate is provided above or below the first rebound plate to rebound balls dropped from the third position. The second rebound plate is movable to exit the cleaning chamber and enter the testing chamber, or vice versa. A second cleaning assembly is provided in the cleaning chamber to clean the second rebound plate.

[0015] The ball free fall testing device of the present invention drives the ball from the first position to the second position through the lifting mechanism, conveys the ball from the second position to the third position through the first conveying mechanism, drops the ball from the third position through the testing mechanism, and conveys the ball from the testing mechanism to the first position through the second conveying mechanism. Through automated operation, the time and steps of manual intervention are reduced, and multiple ball free fall tests can be completed in a shorter time, which greatly improves the test efficiency and can effectively ensure the consistency of the test conditions. At the same time, the first rebound plate is cleaned by the first cleaning component, which eliminates the interference of the unclean environment on the test and improves the accuracy and reliability of the test results.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a ball free fall testing device according to an embodiment of the present invention; Figure 2Schematic diagram of the structure of the rising mechanism in the ball free fall testing device according to an embodiment of the present invention; Figure 3 Schematic diagram of the first internal structure of the testing mechanism in the ball free fall testing device according to an embodiment of the present invention; Figure 4 Schematic diagram of the second internal structure of the testing mechanism in the ball free fall testing device according to an embodiment of the present invention; Figure 5 Schematic diagram of the third internal structure of the testing mechanism in the ball free fall testing device according to an embodiment of the present invention; Figure 6 Schematic diagram of the structure of the first cleaning component in the ball free fall testing device according to an embodiment of the present invention; Figure 7 Schematic diagram of the internal structure of the first cleaning plate in the ball free fall testing device according to an embodiment of the present invention; Figure 8 Schematic diagram of the bottom structure of the first cleaning plate in the ball free fall testing device according to an embodiment of the present invention.

[0018] Description of reference numerals: 1. Lifting mechanism; 11. Mounting frame; 111. Support frame; 12. First drive assembly; 13. First transmission assembly; 131. First synchronous wheel; 132. Second synchronous wheel; 133. First transmission belt; 14. Carrying member; 141. Positioning slot; 2. Testing mechanism; 21. Testing chamber; 211. Pause assembly; 212. Accommodating slot; 213. Stop assembly; 214. Testing assembly; 215. Guide block; 216. First rebound plate; 2161. First A threaded hole; 217, a second rebound plate; 22, a cleaning chamber; 221, a first cleaning component; 2211, a first screw; 2212, a first bevel gear; 2213, a first cleaning plate; 2214, a second bevel gear; 2215, a first transmission gear; 2216, a second transmission gear; 2217, a first cleaning member; 222, a second cleaning component; 3, a first conveying mechanism; 4, a second conveying mechanism; 5, a first ball pushing component; 6, a control system; 7, a sphere. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "resin", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships described in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, the schematic representations of these terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0026] See also Figure 1 and Figure 3 , Figure 1 This is a schematic structural diagram of a ball free fall testing device according to an embodiment of the present invention. Figure 3 The first internal structure diagram of the testing mechanism in the ball free fall testing device according to an embodiment of the present invention is shown. The embodiment of the present invention provides a ball free fall testing device, comprising: an ascending mechanism, a testing mechanism, a first conveying mechanism, and a second conveying mechanism, wherein the ascending mechanism is used to drive the ball to ascend from the first position to the second position; the testing mechanism is used to lower the ball from the third position so that it freely falls; the first conveying mechanism is used to convey the ball from the first position to the third position, and the second conveying mechanism is used to convey the ball dropped from the testing mechanism to the first position; wherein the testing mechanism includes a testing chamber and a cleaning chamber, the third position is located inside the testing chamber, and a first rebound plate is provided below the third position for rebounding the ball dropped from the third position, the first rebound plate being movable to exit the cleaning chamber and enter the testing chamber, or to exit the testing chamber and enter the cleaning chamber; a first cleaning assembly is provided in the cleaning chamber for cleaning the first rebound plate.

[0027] In some embodiments, the ball free fall test device of the present invention can be used to test the roundness and elastic coefficient of balls such as table tennis, tennis, pickleball, soccer, etc. It should be explained that pickleball is a racket sport that combines elements of tennis, badminton, and table tennis.

[0028] In some embodiments, taking a pickle ball as an example, by measuring the height at which the pickle ball rebounds after free falling from a certain height, according to the law of conservation of energy, the actual rebound height of the ball can reflect its elastic coefficient. Specifically, the pickle ball is placed on the lifting mechanism 1 from the first position, and the lifting mechanism 1 will drive the pickle ball to the second position. The first conveying mechanism 3 then conveys the pickle ball from the second position to the third position, and the testing mechanism 2 drops the pickle ball from the third position so that it performs free fall motion. It should be explained that the elastic coefficient e is defined as the ratio of the rebound height h2 of the ball 7 to the falling height h1, that is, e=h2 / h1. Preferably, the elastic coefficient of the pickle ball should be greater than or equal to 0.60. In actual testing, four valid measurements should be performed on each ball 7, and the average value should be taken as the final result.

[0029] In some embodiments, using a pickleball as an example, the roundness of the ball 7 is assessed by measuring the degree to which it deviates from a predetermined trajectory during free fall. A smaller deviation radius indicates a higher roundness of the ball 7, while a smaller deviation radius indicates a lower roundness. Specifically, the pickleball is placed from a first position onto a lifting mechanism 1, which drives the ball to a second position. A first conveying mechanism 3 then conveys the ball from the second position to a third position, whereupon a testing mechanism 2 lowers the ball from the third position, causing it to free fall. It should be noted that roundness refers to the trajectories of the largest circle of the ball 7 at different orientations. These trajectories describe the roundness error of a spherical surface in space. During free fall, the trajectory of the ball 7 is affected by its roundness. If the roundness of the ball 7 does not meet the required roundness, it will deviate from the predetermined trajectory during free fall, and the deviation radius will increase. Therefore, if the deviation radius of the ball 7 exceeds a certain threshold (the specific threshold is determined based on the actual testing standards), the roundness of the ball 7 does not meet the required roundness.

[0030] In some embodiments, before the ball falls from the third position, the first rebound plate should exit the clean chamber and enter the test chamber. This allows the first rebound plate to provide a rebound surface for the ball as it falls from the third position, providing the necessary conditions for monitoring the free fall of the ball. When the ball rebounds one or more times on the first rebound plate or finally stops rebounding, the first rebound plate should exit the test chamber and enter the clean chamber. This allows the ball to fall from the first rebound plate during its movement and onto the second conveying mechanism, which then conveys it to the first position.

[0031] Optionally, the first rebound plate is horizontally disposed. Optionally, the first rebound plate is movably disposed in a horizontal direction, and its length along the direction of movement is greater than or equal to the length of the test chamber along the direction of movement of the first rebound plate. Preferably, the length of the first rebound plate along its direction of movement is equal to the length of the test chamber along the direction of movement of the first rebound plate. Optionally, both the test chamber and the clean chamber are cubical chambers, and a through groove for the first rebound plate to pass through is provided in the cavity wall between the test chamber and the clean chamber, and tracks for the first rebound plate to slide are provided on both sides of the test chamber and the clean chamber.

[0032] In some embodiments, the ball free fall testing device of the present application further includes a first ball pushing assembly 5, which is used to move the ball 7 from the second position to the first conveying mechanism 3. It is understandable that the ball 7 needs to be accurately moved from the second position to the first conveying mechanism 3 to ensure the continuity and accuracy of the test. By precisely controlling the movement of the ball 7, the first ball pushing assembly 5 can ensure that the position and posture of the ball 7 are consistent during the test, thereby improving the reliability and repeatability of the test results. When the ball 7 is in the second position and waiting to be pushed to the first conveying mechanism 3, the first ball pushing assembly 5 moves to contact the ball 7 and pushes it from the second position to the first conveying mechanism 3. After the ball 7 is successfully moved to the first conveying mechanism 3, the first ball pushing assembly 5 returns to the initial position and waits for the next instruction.

[0033] In some embodiments, the first ball pushing assembly 5 is a linear drive, which is used to convert input energy into linear motion to contact the ball 7 in the second position and push it to the first conveying mechanism 3; or, the first ball pushing assembly 5 is a deformation assembly, which is used to convert input energy into its deformation to contact the ball 7 in the second position and push it to the first conveying mechanism 3.

[0034] In some embodiments, the first ball push assembly 5 is a linear drive, which may include a pneumatic cylinder, a hydraulic cylinder, or an electric push rod. The pneumatic cylinder pushes the piston to perform linear motion in the cylinder body through compressed air. When the compressed air enters the cylinder, the piston is pushed by the pressure, thereby driving the piston rod to extend or retract, thereby achieving linear motion. The hydraulic cylinder pushes the piston to perform linear motion in the cylinder body through the pressure of the hydraulic oil. The hydraulic oil is provided by a hydraulic pump, and the oil quantity and direction are adjusted by the control valve to achieve the extension and retraction of the piston. The electric push rod converts the rotational motion into linear motion by driving the screw or gear through the motor. The rotation of the motor drives the screw or gear, so that the nut or rack moves along the linear track, thereby achieving linear motion. It can be understood that whether it is a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, it can contact the ball 7 through its linear motion part to achieve the push of the ball 7.

[0035] In some embodiments, the first ball-pushing assembly 5 is a deformable assembly, which may include an airbag or a water bag. The airbag deforms when filled with air, thereby achieving a pushing action. When the airbag is inflated, the internal pressure increases, causing the airbag to expand, generating thrust; when the airbag is deflated, it contracts and returns to its original shape. The water bag deforms when filled with liquid (such as water), thereby achieving a pushing action. When the water bag is filled with liquid, the internal pressure increases, causing the water bag to expand, generating thrust; when the water bag is deflated, it contracts and returns to its original shape. It is understood that both the airbag and the water bag can use their deformed parts to contact the ball 7, thereby achieving a pushing action.

[0036] In some embodiments, as Figure 2 As shown, Figure 2 Figure 1 is a schematic diagram of the structure of the lifting mechanism 1 in the ball free-fall test device according to an embodiment of the present invention. The lifting mechanism 1 includes a first drive assembly 12, a first transmission assembly 13, and a support 14. The first drive assembly 12 is used to provide power to the first transmission assembly 13. The first transmission assembly 13 is used to convert input energy into linear motion, causing its moving portion to move between a first position and a second position. The support 14 is disposed on the moving portion of the transmission assembly and is used to support the ball 7.

[0037] In some embodiments, the first transmission assembly 13 includes a guide rail, a transmission screw, and a transmission slider. The transmission screw is transmission-connected to the rotational output end of the first drive assembly 12. The transmission slider is threadedly connected to the transmission screw and slidably engages with the guide rail. The carrier 14 is disposed on the transmission slider. When the first drive assembly 12 is activated, the transmission screw rotates, and the transmission slider moves linearly along the transmission screw under the action of the threaded engagement of the transmission screw and the limiting action of the guide rail. In this embodiment, the transmission screw is disposed in a vertical direction, so that the transmission slider in this embodiment drives the carrier 14 to move linearly in the vertical direction between a first position and a second position.

[0038] In some embodiments, the first transmission assembly 13 includes a first synchronous wheel 131, a second synchronous wheel 132, and a first transmission belt 133. The first synchronous wheel 131 and the second synchronous wheel 132 are respectively positioned at a first position and a second position. The first transmission belt 133 is wound around the first synchronous wheel 131 and the second synchronous wheel 132. The first synchronous wheel 131 is connected to the rotation output end of the first drive assembly 12. The carrier 14 is mounted on the first transmission belt 133. When the first drive assembly 12 is activated, the first synchronous wheel 131 rotates, driving the first transmission belt 133 and the second synchronous wheel 132 to rotate. The first transmission belt 133 drives the carrier 14 between the first and second positions. It should be noted that the first transmission belt 133 between the first and second synchronous wheels 131 and 132 is in a straight position, so the carrier 14 moves linearly between the first and second synchronous wheels 131 and 132. Preferably, the first and second positions correspond vertically. Specifically, the lifting mechanism 1 includes a mounting frame 11, which is equipped with two support frames 111, each of which is rotatably connected to a first synchronous pulley 131 and a second synchronous pulley 132. The first drive assembly 12 is also mounted on the mounting frame 11. Preferably, a plurality of bearing members 14 are provided on the first transmission belt 133 along a direction from the first position toward the second position.

[0039] In some embodiments, the support member 14 is provided with a positioning groove 141 that matches the spherical surface of the ball 7. By providing the positioning groove 141 that matches the spherical surface of the ball 7, the ball 7 can be stably placed on the support member 14, and the shaking and displacement of the ball 7 during the lifting process can be reduced, thereby improving the accuracy and reliability of the test. Optionally, taking the ball 7 as an example of a pickle ball, the positioning groove 141 is a hemispherical groove corresponding to the pickle ball.

[0040] In one feasible implementation, ball 7 is placed from the first position into positioning slot 141 of carrier 14. First drive assembly 12 is activated to provide power to first transmission assembly 13, causing carrier 14 to move toward the second position. During the lifting process, positioning slot 141 provides continuous, stable support and restraint, ensuring that ball 7 does not wobble or shift, allowing it to be smoothly lifted to the second position. After ball 7 is successfully lifted to the second position, carrier 14 stops moving, and first ball-pushing assembly 5 activates, pushing ball 7 from carrier 14 in the second position toward first conveying mechanism 3.

[0041] In some embodiments, the first conveying mechanism 3 includes a second drive component and a second transmission component; the second drive component is used to provide power to the second transmission component; the second transmission component is used to convert input energy into linear motion so that its moving end moves between the second position and the third position.

[0042] In some embodiments, the second transmission assembly includes a guide rail, a transmission screw, and a transmission slider. The transmission screw is connected to the rotation output end of the second drive assembly, the transmission slider is threadedly connected to the transmission screw and slidably fits in the guide rail, and a positioning block for supporting the sphere 7 is provided on the transmission slider. The positioning block structure can refer to the aforementioned supporting member 14. When the second drive assembly is started, the transmission screw rotates, and the transmission slider moves linearly along the transmission screw under the action of the threaded fit of the transmission screw and the limiting action of the guide rail. Optionally, the transmission screw in this embodiment is arranged in the horizontal direction, so that the transmission slider in this embodiment will drive the positioning block to move linearly in the horizontal direction between the second position and the third position.

[0043] In some embodiments, the first transmission assembly 13 includes a driving wheel, a driven wheel, and a synchronous belt. The driving wheel and the driven wheel are respectively arranged at the second position and the third position. The synchronous belt is wound around the driving wheel and the driven wheel, and the driving wheel is connected to the rotation output end of the second driving assembly. When the first driving assembly 12 is started, the driving wheel rotates to drive the synchronous belt and the driven wheel to rotate, and the synchronous belt drives the ball 7 to move between the second position and the third position. It should be noted that the synchronous belt between the driving wheel and the driven wheel is in a straight state, so the bearing member 14 moves in a straight line between the driving wheel and the driven wheel. At the same time, the synchronous belt has friction, so when the ball 7 is pushed to the synchronous belt by the first ball-pushing assembly 5, the movement of the synchronous belt can drive the ball 7 to move. Preferably, the second position and the third position are at the same height.

[0044] like Figures 3 to 5 As shown, Figure 3 Schematic diagram of the first internal structure of the testing mechanism 2 in the ball free fall testing device according to an embodiment of the present invention. Figure 4 Schematic diagram of the second internal structure of the testing mechanism 2 in the ball free fall testing device according to an embodiment of the present invention. Figure 5 This is a third schematic diagram of the internal structure of the testing mechanism 2 in the ball free-fall testing apparatus according to an embodiment of the present invention. In some embodiments, to precisely control the starting point and timing of the free-fall motion of the ball 7, the testing mechanism 2 includes a pause assembly 211 positioned at a third position. This pause assembly 211 is configured to receive the ball 7 conveyed by the first conveying mechanism 3. Upon receiving a release signal, the pause assembly 211 releases the received ball 7, allowing the ball 7 to enter free-fall motion starting from the pause assembly 211.

[0045] Preferably, the ball free fall testing device of the present application further includes a shell 21, and the testing mechanism 2 is arranged in the shell 21, so that the free fall motion of the ball 7 can be protected from interference from external airflow, providing a stable motion environment for the free fall of the ball 7.

[0046] It is understood that the pause assembly 211 ensures that the ball 7 is temporarily fixed in the third position until the release signal is received, and then the free fall motion begins. This eliminates the uncertainty of the initial position and release time of the ball 7, thereby improving the accuracy and repeatability of the test results. It should be noted that the release signal is sent by the control system 6 of the ball free fall test device.

[0047] In some embodiments, the pause component 211 is provided with a receiving groove 212 for accommodating the ball 7, and the bottom of the receiving groove 212 is provided with a movably stopping component 213; the stopping component 213 has a first state and a second state; when the stopping component 213 is in the first state, the bottom of the receiving groove 212 is closed and provides an upward support force for the ball 7, and the ball 7 is accommodated in the receiving groove 212; when the stopping component 213 is in the second state, the supporting force of the bottom of the receiving groove 212 on the ball 7 is released and conducted downward, and the ball 7 passes through the receiving groove 212 and performs free fall downward.

[0048] It is understandable that by providing the receiving groove 212 and the movable stop assembly 213, the ball 7 can be accurately released at a predetermined position and time, thereby ensuring the accuracy and repeatability of the test. This design can effectively avoid the accidental movement of the ball 7 before release, ensuring the safety and reliability of the test process. In a feasible implementation process, when the ball 7 is transported to the third position and enters the receiving groove 212 of the pause assembly 211, the stop assembly 213 is in the first state, closing the bottom of the receiving groove 212 and providing an upward support force to fix the ball 7 in the receiving groove 212; when the free fall test is ready, the control system 6 sends a release signal to the stop assembly 213. After receiving the release signal, the stop assembly 213 switches to the second state, releasing the support force on the ball 7, making the bottom of the receiving groove 212 conductive, and the ball 7 falls freely under the action of gravity. It should be explained that the sending of the release signal should be based on the actual situation. For example, a release signal is sent when it is observed that the last free fall test has ended. This operation can be automatically implemented by the control system 6 through sensor detection, or it can be implemented by the operator observing and inputting operating instructions to the control system 6.

[0049] In some embodiments, the stop component 213 is a linear motion mechanism for converting input energy into linear motion to close or open the bottom of the accommodating groove 212; or, the stop component 213 is a rotational motion mechanism for converting input energy into rotational motion to close or open the bottom of the accommodating groove 212.

[0050] In some embodiments, the stop assembly 213 is a linear motion mechanism comprising a cylinder and a baffle connected to the telescopic end of the cylinder. When the telescopic end of the cylinder is extended, the baffle is in a closed position, blocking the bottom of the receiving groove 212 and providing an upward support force to keep the ball 7 in the receiving groove 212. When the telescopic end of the cylinder is retracted, the baffle moves to a conductive position, the bottom of the receiving groove 212 is conductive, and the ball 7 falls freely under the action of gravity.

[0051] In some embodiments, the stop assembly 213 is a rotary motion mechanism comprising a motor and a baffle connected to the motor output. Optionally, a coupling may be provided between the motor and the baffle. It will be appreciated that the motor converts electrical energy into rotational motion to drive the baffle, which is connected to the motor output. When the motor rotates, the baffle rotates accordingly, thereby changing the state of the bottom of the receiving groove 212. The coupling connects the motor output and the baffle, ensuring coaxiality and transmission accuracy between the two.

[0052] In some embodiments, a guide block 215 is provided between the first conveying mechanism 3 and the pause assembly 211. The guide block 215 is used to guide the ball 7 as it moves from the first conveying mechanism 3 to the pause assembly 211. Specifically, the height of the first conveying mechanism 3 is slightly higher than the pause assembly 211. That is, after the ball 7 is conveyed by the first conveying mechanism 3 and detaches, it will fall directly into the receiving groove 212 due to inertia and gravity, or fall into the receiving groove 212 under the influence of the guide block 215.

[0053] In some embodiments, in order to more comprehensively monitor the movement path of the sphere 7 during the test process, thereby obtaining more detailed data for a more accurate evaluation of the performance of the sphere 7, the test mechanism 2 also includes a test component 214 disposed in the test cavity 21. The test component 214 is used to monitor the movement path of the sphere 7, providing strong support for subsequent data analysis and performance evaluation.

[0054] In some embodiments, the testing component 214 includes a visual camera and / or a laser sensor. The visual camera is used to obtain image data of the motion of the sphere 7, and the laser sensor is used to obtain position data of the motion of the sphere 7. It should be explained that the visual camera can capture the position and posture of the sphere 7 at different time points. After processing and analyzing the image data, information such as the motion trajectory and speed of the sphere 7 can be extracted. The laser sensor can accurately measure the distance and relative speed between the sphere 7 and the sensor. This data can be used to calculate the motion path and position change of the sphere 7. By fusing the data from the visual camera and the laser sensor, the complete motion path of the sphere 7 can be generated, thereby evaluating the performance of the sphere 7.

[0055] In some embodiments, a first screw is provided in the cleaning chamber for driving the first rebound plate to move, the first rebound plate is provided with a first threaded hole, and the first screw is threadedly engaged with the first threaded hole; when the first screw rotates, the first rebound plate exits the cleaning chamber in a horizontal direction and enters the test chamber, or exits the test chamber and enters the cleaning chamber.

[0056] In some embodiments, the first cleaning assembly includes a first bevel gear arranged on the first screw, a first cleaning plate arranged above the first screw, the first cleaning plate is rotatably provided with a second bevel gear, the first bevel gear is meshed with the second bevel gear; the second bevel gear is connected to a first transmission gear, and the first cleaning plate is also rotatably provided with multiple second transmission gears, the multiple second transmission gears are meshed with each other or with the first transmission gear; the multiple second transmission gears are connected to the side of the first screw facing the first cleaning member, and the first cleaning member extends downward to the moving path of the first rebound plate; when the first screw rotates, it drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first transmission gear to rotate, the first transmission gear directly or indirectly drives the multiple second transmission gears to rotate, and the multiple second transmission gears respectively drive their respective first cleaning members to perform cleaning work on the moving first rebound plate.

[0057] It is understandable that the first rebound plate in the test mechanism may be contaminated with dust or impurities after each test, and these contaminants may affect the accuracy of subsequent tests. Therefore, a mechanism is needed to clean the first rebound plate to ensure the cleanliness of its surface, thereby improving the reliability of the test. Specifically, when the first screw rotates, due to the threaded fit between the first screw and the first threaded hole, the first rebound plate will move in the horizontal direction; the first rebound plate can exit the cleaning chamber and enter the test chamber, or exit the test chamber and enter the cleaning chamber. At the same time, as the first screw rotates, the first bevel gear rotates accordingly, and the first bevel gear drives the second bevel gear to rotate, and the second bevel gear then drives the first transmission gear to rotate, and the first transmission gear directly or indirectly drives multiple second transmission gears to rotate, and each second transmission gear drives its own first cleaning member to clean the moving first rebound plate. Optionally, the first cleaning member includes a rotating shaft connected to the corresponding second transmission gear and bristles connected to the rotating shaft. When the second transmission gear rotates, the bristles are driven to rotate through the rotating shaft to clean the upper surface of the first rebound plate, and multiple first cleaning members clean the first rebound plate at the same time, ensuring comprehensiveness and thoroughness of the cleaning.

[0058] In some embodiments, a second rebound plate for rebounding balls falling from a third position is further provided on the upper or lower side of the first rebound plate. The second rebound plate is movable to exit the cleaning chamber and enter the test chamber, or to exit the test chamber and enter the cleaning chamber; a second cleaning assembly for cleaning the second rebound plate is provided in the cleaning chamber. Optionally, the second cleaning assembly has the same structure as the first cleaning assembly. It is understandable that by providing two rebound plates (a first rebound plate and a second rebound plate), different test conditions can be provided, thereby obtaining more test data, which helps to more comprehensively evaluate the performance of the ball. Specifically, the first rebound plate and the second rebound plate can provide different rebound heights or materials, thereby simulating different actual usage scenarios, improving the practicality and accuracy of the test, and by automatically controlling the switching of the two rebound plates, manual intervention can be reduced, and test efficiency and repeatability can be improved.

[0059] In some embodiments, the first rebound board may have the same parameters as the second rebound board, so that the first rebound board and the second rebound board with different heights but the same parameters can provide two sets of different height tests for the free fall motion of the ball.

[0060] In some embodiments, the first rebound plate and the second rebound plate can be made of different materials. For example, the first rebound plate can be made of marble; the second rebound plate can be made of plastic, such as polyethylene or polycarbonate; thus, the first rebound plate and the second rebound plate can provide experimental controls for the free fall motion of the ball under rebound surfaces of different materials.

[0061] In a feasible embodiment, the lifting mechanism lifts the pickle ball from the first position to the second position, the first conveying mechanism conveys the pickle ball from the second position to the third position (inside the test chamber), and the pause component in the test mechanism releases the pickle ball to cause it to fall freely. The pickle ball falls on the first rebound board or the second rebound board, and the rebound height and movement path of the pickle ball are recorded. The first rebound board and the second rebound board can be cleaned by the first cleaning component and the second cleaning component in the cleaning chamber during the movement to ensure the accuracy of each test.

[0062] In some embodiments, the starting section of the second conveying mechanism is located at the bottom of the test chamber. It is understood that by setting the starting section of the second conveying mechanism at the bottom of the test chamber, the ball can be automatically recovered, reducing manual intervention and improving test efficiency. Specifically, after a free fall test, the ball will fall on the first rebound plate or the second rebound plate, and then In some embodiments, the ball free-fall testing device of the present application further includes a control system 6. This control system 6 controls the movement of the ascending mechanism 1, the testing mechanism 2, the conveying mechanism, and the like by receiving and processing signals from the testing assembly 214 (e.g., a visual camera and laser sensor) and user input signals (e.g., start and stop), thereby automating the operation of the testing device. Specifically, the control system 6 receives motion data from the visual camera and laser sensor, analyzes the motion path and performance indicators of the ball 7, and controls the operation of the ascending mechanism 1, the testing mechanism 2, the conveying mechanism, and the like according to pre-set testing procedures and standards.

[0063] The above examples are merely provided to further illustrate the technical content of the present invention for easier understanding by the reader, but do not limit the embodiments of the present invention to these examples. Any extension or re-creation of the technology based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A ball free fall test device, characterized in that: include: An ascending mechanism, a testing mechanism, a first conveying mechanism, and a second conveying mechanism, wherein the ascending mechanism is used to drive the ball from the first position to the second position; the testing mechanism is used to lower the ball from the third position so that it moves in free fall; the first conveying mechanism is used to convey the ball from the first position to the third position, and the second conveying mechanism is used to convey the ball dropped from the testing mechanism to the first position; In which, the testing mechanism includes a testing chamber and a cleaning chamber, the third position is located inside the testing chamber, and a first rebound plate is provided below the third position for rebounding the ball falling from the third position. The first rebound plate can be moved to exit the cleaning chamber and enter the testing chamber, or to exit the testing chamber and enter the cleaning chamber; a first cleaning component for cleaning the first rebound plate is provided in the cleaning chamber.

2. A ball free fall testing device according to claim 1, characterized in that: It also includes a first ball pushing assembly, which is used to move the ball from the second position to the first conveying mechanism.

3. A ball free fall testing device according to claim 1, characterized in that: The lifting mechanism includes a first drive component, a first transmission component and a supporting member; the first drive component is used to provide power to the first transmission component; the first transmission component is used to convert input energy into linear motion so that its moving part moves between the first position and the second position; the supporting member is arranged on the moving part of the transmission component and is used to support the sphere.

4. A ball free fall testing device according to claim 1, characterized in that: The first conveying mechanism includes a second drive assembly and a second transmission assembly; the second drive assembly is used to provide power to the second transmission assembly; the second transmission assembly is used to convert input energy into linear motion so that its moving end moves between the second position and the third position.

5. The ball free fall testing device according to claim 1, characterized in that: The testing mechanism includes a pause component arranged at the third position, and the pause component is used to receive the ball transmitted by the first conveying mechanism; when the pause component receives a release signal, the pause component releases the ball it receives, so that the ball performs free fall motion starting from the pause component.

6. A ball free fall testing device according to claim 5, characterized in that: The pause component is provided with a receiving groove for accommodating the ball, and the bottom of the receiving groove is provided with a movable stopping component; the stopping component has a first state and a second state; When the stop assembly is in the first state, the bottom of the accommodating groove is closed and provides an upward supporting force for the ball, and the ball is accommodated in the accommodating groove; When the stop assembly is in the second state, the supporting force of the bottom of the accommodating groove on the ball is released and conducted downward, and the ball passes through the accommodating groove and performs free fall downward.

7. A ball free fall testing device according to claim 1, characterized in that: The testing mechanism further includes a testing component disposed in the testing cavity, and the testing component is used to monitor the movement path of the ball.

8. The ball free fall testing device according to claim 1, characterized in that: A first screw for driving the first rebound plate to move is provided in the cleaning chamber, and a first threaded hole is provided in the first rebound plate, and the first screw is threadedly engaged with the first threaded hole; when the first screw rotates, the first rebound plate exits the cleaning chamber in a horizontal direction and enters the test chamber, or exits the test chamber and enters the cleaning chamber.

9. The ball free fall testing device according to claim 8, characterized in that: The first cleaning assembly includes a first bevel gear provided on the first screw, a first cleaning plate provided above the first screw, the first cleaning plate rotatably provided with a second bevel gear, the first bevel gear meshing with the second bevel gear; the second bevel gear is connected to a first transmission gear, the first cleaning plate is also rotatably provided with a plurality of second transmission gears, the plurality of second transmission gears meshing with each other or with the first transmission gear; A first cleaning member is connected to each of the second transmission gears on one side facing the first screw rod, and the first cleaning member extends downward to the moving path of the first rebound plate; When the first screw rotates, it drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first transmission gear to rotate, the first transmission gear directly or indirectly drives multiple second transmission gears to rotate, and the multiple second transmission gears respectively drive their respective first cleaning members to perform cleaning work on the moving first rebound plate.

10. The ball free fall testing device according to claim 1, characterized in that: A second rebound plate is further provided on the upper or lower side of the first rebound plate for rebounding the ball falling from the third position. The second rebound plate can be moved to exit the cleaning chamber and enter the test chamber, or to exit the test chamber and enter the cleaning chamber; a second cleaning component for cleaning the second rebound plate is provided in the cleaning chamber.

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