Falling ball impact tester

Abstract

The utility model discloses a falling ball impact tester, and belongs to the technical field of material performance testing equipment. The falling ball impact tester comprises a fixing assembly; the lifting assembly is arranged at the top of the fixing assembly; the electromagnet is fixedly arranged at the bottom of the fixing assembly; the steel ball is movably adsorbed to the bottom end of the electromagnet; the control assembly is used for controlling the electromagnet to adsorb and release the steel ball; the height sensor is used for detecting the falling start instantaneous height of the steel ball, is arranged at the bottom of the fixing assembly and is electrically connected with the control assembly; the power supply assembly supplies power to the electromagnet, the control assembly and the height sensor. The falling ball impact tester overcomes the problem that a traditional falling ball impact tester needs to be supported and fixed by a base, a supporting rod and other components, and is inconvenient to move, convenient to carry, high in detection efficiency and convenient to implement, popularize and apply.

Description

Technical Field

[0001] This utility model relates to the technical field of material performance testing equipment, and in particular to a falling ball impact tester. Background Technology

[0002] Flooring has been used in China for 30 years. With the development of the domestic economy, flooring is increasingly used in various ground applications, such as machinery factories, electronics factories, food processing plants, pharmaceutical factories, and underground parking garages. Flooring materials include resin materials, inorganic materials, and composite materials, making it a comprehensive type of building decoration and functional material. During use, flooring is frequently subjected to external impacts. When the surface coating of the flooring material is brittle, it often cracks, develops ring marks, and peels upon impact. In areas requiring high integrity, such as corrosion-resistant workshops and oil-resistant workshops, once cracks, fissures, or peeling appear on the flooring surface, corrosive media can penetrate into the concrete base layer through these defects, often causing corrosion and peeling of the concrete base layer. In more severe cases, it can even seep into the underground soil layer, causing soil pollution. Therefore, the impact resistance of flooring is an important acceptance technical parameter among the physical properties of flooring materials.

[0003] The four national standards, namely "Floor Coating Materials" (GB / T 22374-2018), "Technical Specification for Epoxy Resin Self-Leveling Floor Engineering" (GB / T 50589-2010), "Technical Specification for Integral Floor Engineering" (CECS 328-2012) of the China Engineering Construction Standardization Association, and "Technical Standard for Self-Leveling Floor Engineering" (JGJ / T 175-2018) of the building construction industry, do not have equipment requirements for the drop ball method to test impact resistance. On-site, the test is often conducted manually by holding a steel ball and letting it fall freely. One drawback of this test method is that the height cannot be strictly controlled. Even if the drop height is measured in advance and the ball is released by hand, the drop height may deviate at the moment of release. Therefore, there is often a certain deviation from the height required by the standard, which will affect the acceptance of materials on site. The group standard "On-site Acceptance Testing Methods for Flooring Engineering Part 6: Determination of Impact Resistance" (T / CSTM 00556.6-2022) specifies the testing equipment. However, this equipment consists of components such as a base and support rods. In actual on-site operations, the site area is often several thousand or even tens of thousands of square meters. It is very inconvenient to carry such a testing frame, move it, and conduct tests according to the specified requirements, which greatly increases the site acceptance time.

[0004] In summary, there is a certain market demand for portable ball impact testers. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a falling ball impact tester, which has a simple structure, is easy to carry, and can improve testing efficiency.

[0006] The technical solution of this utility model is as follows:

[0007] A falling ball impact tester includes: a fixing component; a lifting component disposed on top of the fixing component for lifting the entire falling ball impact tester to the test height; an electromagnet fixedly disposed at the bottom of the fixing component; a steel ball movably attracted to the bottom end of the electromagnet; a control component electrically connected to the electromagnet for controlling the attraction and release of the steel ball by the electromagnet; when the control component controls the electromagnet to be energized, the steel ball is attracted to the bottom surface of the electromagnet; when the control component controls the electromagnet to be de-energized, the steel ball falls freely; a height sensor disposed at the bottom of the fixing component and electrically connected to the control component for detecting the height of the steel ball at the moment of the start of its fall; and a power supply component electrically connected to the control component for supplying power to the electromagnet, the control component, and the height sensor.

[0008] According to the aforementioned ball impact tester, the bottom surface of the electromagnet is a concave spherical arc, and the steel ball is located at the center of the electromagnet.

[0009] According to the aforementioned ball impact tester, the bottom surface of the electromagnet is flat; a magnetic absorbing plate is fixed on the steel ball with adhesive; when the electromagnet is energized, the magnetic absorbing plate attracts the electromagnet; when the electromagnet is de-energized, the magnetic absorbing plate and the steel ball fall freely together.

[0010] Furthermore, the horizontal cross-sectional dimensions of the magnetic attractant are consistent with the horizontal cross-sectional dimensions of the electromagnet; the fixing assembly also includes at least three positioning members that abut against the axial outer side of the electromagnet. Each positioning member includes a fixed connecting part, an abutting part perpendicular to the fixed connecting part and located at one end of the fixed connecting part, and an inclined part located at the bottom end of the abutting part. The fixed connecting part is fixedly disposed at the bottom of the fixing assembly, the abutting part is in contact with the circumferential surface of the electromagnet, and the inclined part faces outward away from the electromagnet; when the magnetic attractant is attracted to the electromagnet, the outer circumferential surface of the magnetic attractant is in contact with the abutting part.

[0011] According to the aforementioned ball impact tester, it also includes a universal joint disposed between the lifting assembly and the fixing assembly. One end of the universal joint is fixed to the lifting assembly, and the other end is fixed to the fixing assembly. The gravity distribution of the combined structure of the fixing assembly, height sensor, electromagnet, control assembly and power supply assembly is uniform.

[0012] Furthermore, the universal joint consists of a fixed ring and a ball joint movably connected to the bottom end of the fixed ring; the top end of the fixed ring is fixedly connected to the bottom end of the lifting assembly, and the bottom end of the fixed ring is provided with a ball groove; the ball joint includes a rod and a ball head located at one end of the rod, the ball head is disposed in the ball groove and rotates in the ball groove, and the other end of the rod of the ball joint is fixedly connected to the fixed assembly.

[0013] According to the aforementioned ball impact tester, the fixing component includes a housing with an open top and a top cover detachably connected to the housing. A mounting plate is fixedly installed at the bottom of the housing cavity, and an electromagnet is fixedly installed on the bottom surface of the mounting plate. A first through hole is opened at the center of the bottom of the housing, and the outer circumferential surface of the electromagnet is embedded in the first through hole.

[0014] Furthermore, a second through hole is provided on one side of the bottom end face of the housing; a third through hole is provided on the mounting plate corresponding to the second through hole; the height sensor is installed in the third through hole, the bottom end face of the height sensor is located at the position of the second through hole, and the height sensor is fixedly connected to the upper surface of the mounting plate by a bracket.

[0015] Furthermore, the power supply assembly includes a battery fixedly mounted on the upper surface of the mounting plate and a power switch electrically connected to the battery, the power switch being fixedly mounted on the outer wall of the housing of the fixed assembly.

[0016] The aforementioned ball impact tester includes a controller fixedly installed inside the fixed assembly, a release switch fixedly installed on the lifting assembly, and a display screen fixedly installed on the outside of the fixed assembly.

[0017] This utility model has the following beneficial effects:

[0018] (1) The ball impact tester of this utility model overcomes the problem of inconvenience caused by the traditional ball impact tester requiring support and fixation of components such as base and support rod. The ball impact tester of this embodiment is easy to carry, has high testing efficiency, and is easy to implement and promote.

[0019] (2) The ball impact tester of this utility model has a built-in height sensor, which can display the actual height of the ball in free fall after the ball is released, and has the advantage of high accuracy.

[0020] (3) When the test personnel hold the lifting component in a non-horizontal state, the bottom surface of the fixed component can also be ensured to be horizontal, and the height sensor can accurately detect the height of the steel ball at the moment of its fall. Attached Figure Description

[0021] Figure 1 Three-dimensional representation of the falling ball impact tester in Example 1 Figure 1 ;

[0022] Figure 2 Three-dimensional representation of the falling ball impact tester in Example 1 Figure 2 ;

[0023] Figure 3 This is a perspective view of the internal structure of the fixing component in Embodiment 1;

[0024] Figure 4 This is a cross-sectional view showing the connection state of the housing, mounting plate, and electromagnet in Example 1.

[0025] Figure 5 This is a perspective view of the casing of Example 1;

[0026] Figure 6 This is a perspective view of the mounting plate in Example 1;

[0027] Figure 7 This is a system block diagram of Example 1;

[0028] Figure 8 This is a perspective view of the ball impact tester of Example 2;

[0029] Figure 9 This is a front view of the ball impact tester of Example 2;

[0030] Figure 10 This is a perspective view of the connection status of the fixing components, height sensor, and electromagnet in Example 2;

[0031] Figure 11 This is a perspective view of the positioning component in Example 2;

[0032] Figure 12 This is a perspective view of the ball impact tester of Example 3;

[0033] Figure 13 This is a cross-sectional view of the universal joint in Example 3;

[0034] Figure 14 This is a cross-sectional view of the fixing ring sleeve in Example 3;

[0035] Figure 15 This is a perspective view of the ball head of Example 3.

[0036] In the diagram, 1. Fixing component; 11. Housing; 111. Screw hole at the bottom of the housing; 112. First through hole; 113. Second through hole; 12. Top cover; 13. Mounting plate; 131. Screw hole on the mounting plate; 132. Third through hole; 14. Bracket; 15. Positioning component; 151. Fixing connection part; 152. Abutment part; 153. Inclined part; 2. Lifting component; 21. Support rod; 22. Grip rod; 3. Height sensor; 4. Electromagnet; 5. Steel ball; 6. Control component; 61. Controller; 62. Release switch; 63. Display screen; 7. Power supply component; 71. Battery; 72. Charging port; 73. Power switch; 8. Magnetic suction plate; 9. Universal joint; 91. Fixing ring; 911. Ball groove; 92. Ball head rod; 921. Rod part; 922. Ball head. Detailed Implementation

[0037] To make the technical problems, technical solutions and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Example 1:

[0039] Combination Figures 1 to 7 The technical solution of Embodiment 1 is described in detail below. The falling ball impact tester includes a fixing component 1, a lifting component 2, a height sensor 3, an electromagnet 4, a steel ball 5, a control component 6, and a power supply component 7. The lifting component 2 is connected to the top of the fixing component 1 and is used to lift the entire falling ball impact tester to the test height. The electromagnet 4 is fixedly installed at the bottom of the fixing component 1, and the steel ball is attracted to the bottom end of the electromagnet 4. The control component 6 is electrically connected to the electromagnet 4 and is used to control the attraction and release of the steel ball 5 by the electromagnet 4. When the control component 6 controls the electromagnet 4 to be energized, the steel ball 5 is attracted to the bottom surface of the electromagnet 4; when the control component 6 controls the electromagnet 4 to be de-energized, the steel ball 5 falls freely. The height sensor 3 is installed at the bottom of the fixing component 1 and is electrically connected to the control component 6, and is used to detect the height of the steel ball 5 at the moment of the start of its fall. The power supply component 7 is electrically connected to the control component 6 and is used to supply power to the electromagnet 4, the control component 6, and the height sensor 3.

[0040] Among them, the height sensor 3 can be selected as a laser rangefinder, an infrared rangefinder, or a photoelectric sensor, which can accurately detect the height of the steel ball 5 at the moment it begins to fall.

[0041] Specifically, the fixing assembly 1 includes a housing 11 with an open upper end and a top cover 12 detachably connected to the housing 11. A mounting plate 13 is fixedly disposed at the bottom of the inner cavity of the housing 11. Further, mounting plate 13 has mounting plate screw holes 131 along its circumferential edge, and the bottom of the housing 11 has housing bottom screw holes 111 corresponding to the mounting plate screw holes 131. The mounting plate 13 is fixedly connected to the housing 11 by screws. An electromagnet 4 is fixedly disposed on the bottom surface of the mounting plate 13 by screws. A through hole 112 is provided at the center of the bottom end of the housing 11, and the outer circumferential surface of the electromagnet 4 is embedded in the through hole 112. The connection between the electromagnet 4 and the housing 11 is stable. Figure 4 and Figure 5 As shown.

[0042] A second through hole 113 is provided on one side of the bottom end face of the housing 11, such as Figure 5 As shown; the mounting plate 13 has a third through hole 132 that corresponds vertically to the second through hole 113, such as Figure 6 As shown; the height sensor 3 is inserted into the third through hole 132, and the bottom end face of the height sensor 3 is located at the position of the second through hole 113. The height sensor 3 is fixedly connected to the upper surface of the mounting plate 13 by the bracket 14, as shown. Figure 3As shown.

[0043] Specifically, the lifting assembly 2 includes a support rod 21 and a gripping rod 22 fixedly disposed at the top of the support rod 21, with the bottom of the support rod 21 connected to the top of the fixing assembly 1.

[0044] Specifically, the control component 6 includes a controller 61 fixedly mounted inside the fixed component 1 and a release switch 62 fixedly mounted on the lifting component 2. Further, the controller 61 is mounted on the upper surface of the mounting plate 13, and is electrically connected to the height sensor 3, the electromagnet 4, and the release switch 62. The release switch 62 is located at one end of the grip rod 22 of the lifting component 2. After the tester raises the ball impact tester to the test height, pressing the release switch 62 with one hand will de-energize the electromagnet 4, causing the steel ball 5 to fall.

[0045] The control component 6 also includes a display screen 63 electrically connected to the controller 61. The display screen 63 is fixedly mounted on the outside of the fixed component 1. The display screen 63 is used to display the height of the steel ball 5 at the moment of release for the test personnel to record.

[0046] like Figure 7 As shown, the controller 61 includes a data acquisition module, a data processing module, a data storage module, a data output module, and a centralized control module. The data acquisition module acquires the height data from the height sensor 3, the data processing module converts the height data from the height sensor 3 into data information, and the data output module displays it on the display screen 63. The centralized control module receives commands from the release switch 62, which enables the electromagnet 4 to release the steel ball 5.

[0047] Specifically, the power supply component 7 can be an internal power supply device or a battery 71; the power supply component 7 can also be an external power supply device, connected to an external power station via an electrical wire to power the falling ball impact tester. Preferably, the power supply component 7 is a battery 71 disposed inside the fixed component 1; further, the battery 71 is fixedly mounted on the upper surface of the mounting plate 13. This facilitates the movement of the falling ball impact tester during outdoor testing, ensuring a constant power supply. Furthermore, the power supply device also includes a charging port 72 connected to the battery 71, which is fixedly disposed on the outer wall of the housing 11 of the fixed component 1. When the battery 71 is low on power, the charging plug is connected to the charging port 72 to charge the internal battery 71. Further, when the power supply component 7 is a battery 71, the power supply component 7 also includes a power switch 73 electrically connected to the battery 71, which is fixedly disposed on the outer wall of the housing 11 of the fixed component 1. After turning on the power switch 73, the instrument can be used for testing; after the test, the power switch 73 is turned off, and the instrument stops working.

[0048] In this embodiment, as Figure 4As shown, the bottom surface of electromagnet 4 is a concave spherical arc, and steel ball 5 is located at the center of electromagnet 4. The steel ball 5 inside electromagnet 4 provides a more stable and tighter attraction, and different sizes of steel balls 5 can be used for testing.

[0049] It should be noted that the height sensor 3 is located outside the steel ball 5, and the steel ball 5 does not obstruct the detection of the height sensor 3.

[0050] Instructions for use: After the experimenter attaches the steel ball 5 to the bottom surface of the electromagnet 4, the experimenter grasps the lifting component 2 and raises the ball impact tester to a certain height above the test material. The experimenter presses the release switch 62, the electromagnet 4 stops attaching to the steel ball 5, and the steel ball 5 falls freely, impacting the test material. The height sensor 3 detects the height of the steel ball 5 at the moment of its fall and transmits the height data to the controller 61, which displays it on the display screen 63.

[0051] The falling ball impact tester of this embodiment overcomes the inconvenience of relocation caused by the need for support and fixation components such as bases and support rods in traditional falling ball impact testers. This embodiment's falling ball impact tester is portable, has high testing efficiency, and is easy to implement and promote. Furthermore, because the falling ball impact tester has a built-in height sensor, it can display the actual height of the steel ball's free fall after release, offering the advantage of high accuracy.

[0052] Example 2:

[0053] Combination Figures 8 to 11 The technical solution of Embodiment 2 is described in detail below. The difference from Embodiment 1 is that the bottom surface of the electromagnet 4 is flat. A magnetic absorbing piece 8 is fixedly mounted on the steel ball 5 using adhesive. Specifically, when the electromagnet 4 is energized, the magnetic absorbing piece 8 attracts the electromagnet 4; when the electromagnet 4 is de-energized, the magnetic absorbing piece 8 and the steel ball 5 fall freely together.

[0054] The steel ball 5 is attracted and connected to the electromagnet 4 through the magnetic absorbing piece 8, which increases the connection strength between the steel ball 5 and the electromagnet 4, making the steel ball 5 more stable on the electromagnet 4.

[0055] By bonding and fixing steel balls 5 of different sizes to magnetic plates 8, the testing requirements for steel balls 5 of different sizes can also be met.

[0056] Furthermore, to quickly connect the magnetic chuck 8 and the electromagnet 4 and ensure full contact between them, the horizontal cross-sectional dimensions of the magnetic chuck 8 and the electromagnet 4 are consistent. The fixing assembly 1 also includes at least three positioning members 15 abutting against the axial outer side of the electromagnet 4. In this embodiment, three positioning members 15 are provided. Each positioning member 15 includes a fixed connecting part 151, an abutting part 152 perpendicular to the fixed connecting part 151 and located at one end of the fixed connecting part 151, and an inclined part 153 located at the bottom end of the abutting part 152. The fixed connecting part 151 is fixedly mounted on the bottom of the fixing assembly 1 by screws. The abutting part 152 is in contact with the circumferential surface of the electromagnet 4, and the inclined part 153 faces outward away from the electromagnet 4. During the installation of the magnetic chuck 8, the inclined part 153 provides guidance for the position of the magnetic chuck 8; when the magnetic chuck 8 is attracted to the electromagnet 4, the outer circumferential surface of the magnetic chuck 8 is in contact with the abutting part 152.

[0057] Example 3:

[0058] Combination Figures 12 to 15 The technical solution of Embodiment 3 is described in detail below. The difference from Embodiment 1 is that the combined structure of the fixing component 1, height sensor 3, electromagnet 4, control component 6, and power supply component 7 has a uniform gravity distribution. If necessary, a counterweight can be installed inside the fixing component 1. The falling ball impact tester also includes a universal joint 9 disposed between the lifting component 2 and the fixing component 1. One end of the universal joint 9 is fixed to the lifting component 2, and the other end is fixed to the fixing component 1.

[0059] Even when the tester grips the lifting component 2 in a non-horizontal state, the bottom surface of the fixing component 1 can be ensured to be horizontal, and the height sensor 3 can accurately detect the height of the steel ball 5 at the moment of its fall.

[0060] Specifically, the universal joint 9 comprises a fixed ring 91 and a ball joint 92 movably connected to the bottom end of the fixed ring 91. The ball joint 92 includes a rod portion 921 and a ball head 922 located at one end of the rod portion 921. The bottom end of the fixed ring 91 is provided with a ball groove 911, and the ball head 922 is disposed in the ball groove 911 and rotates within the ball groove 911. The top end of the fixed ring 91 is fixedly connected to the bottom end of the lifting assembly 2, and the other end of the rod portion 921 of the ball joint 92 is fixedly connected to the fixed assembly 1. Specifically, the connection between the fixed ring 91 and the lifting assembly 2, and between the rod portion 921 of the ball joint 92 and the fixed assembly 1, can be a threaded connection. More specifically, the bottom end of the support rod 21 of the lifting assembly 2 is provided with an external thread, and the inner cavity of the top end of the fixing ring 91 is provided with an internal thread that matches the external thread of the support rod 21, and the support rod 21 is threadedly connected to the fixing ring 91; the other end of the rod portion 921 of the ball head rod 92 is provided with an external thread, and the top surface of the top cover 12 of the fixing assembly 1 is provided with an internal thread that matches the external thread of the rod portion 921 of the ball head rod 92, and the rod portion 921 is threadedly connected to the top cover 12.

[0061] With industrial development, enterprises are striving to build and generate significant economic benefits. Basic factory construction is a crucial guarantee for these benefits. Most factories have high requirements for the materials and quality of their flooring. Therefore, upon completion of factory flooring, acceptance testing should be rigorous and efficient to facilitate the construction and development of the factory. Impact resistance, as an important physical property for flooring materials, plays a vital role in the durability and usability of flooring coatings. Consequently, there is a substantial market demand for impact resistance testing of factory flooring coatings. Therefore, the drop ball impact tester provided by this invention, once widely adopted, can drive technological innovation in testing enterprises and generate certain economic benefits.

[0062] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solutions of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model.

Claims

1. A ball-dropping impact tester, characterized in that, include: Fixed component (1); The lifting assembly (2) is set on top of the fixing assembly (1) and is used to lift the entire ball impact tester to the test height; An electromagnet (4) is fixedly installed at the bottom of the fixing component (1); The steel ball (5) is attached to the bottom of the electromagnet (4); The control component (6) is electrically connected to the electromagnet (4) and is used to control the attraction and release of the steel ball (5) by the electromagnet (4); when the control component (6) controls the electromagnet (4) to be energized, the steel ball (5) is attracted to the bottom surface of the electromagnet (4); when the control component (6) controls the electromagnet (4) to be de-energized, the steel ball (5) falls freely. A height sensor (3), located at the bottom of the fixed assembly (1) and electrically connected to the control assembly (6), is used to detect the height of the steel ball (5) at the moment of its descent; and The power supply component (7) is electrically connected to the control component (6) and is used to supply power to the electromagnet (4), the control component (6), and the height sensor (3).

2. The ball impact tester according to claim 1, characterized in that, The bottom surface of the electromagnet (4) is a concave spherical arc, and the steel ball (5) is located at the center of the electromagnet (4).

3. The ball impact tester according to claim 1, characterized in that, The bottom surface of the electromagnet (4) is a plane; A magnetic absorbing sheet (8) is fixed on the steel ball (5) by adhesive. When the electromagnet (4) is energized, the magnetic plate (8) attracts the electromagnet (4); when the electromagnet (4) is de-energized, the magnetic plate (8) and the steel ball (5) fall freely together.

4. The ball impact tester according to claim 3, characterized in that, The horizontal cross-sectional dimensions of the magnetic chuck (8) are the same as those of the electromagnet (4); The fixing assembly (1) also includes at least three positioning members (15) that abut against the outer side of the electromagnet (4). The positioning member (15) includes a fixed connection part (151), an abutment part (152) that is perpendicular to the fixed connection part (151) and located at one end of the fixed connection part (151), and an inclined part (153) located at the bottom end of the abutment part (152). The fixed connection part (151) is fixedly disposed at the bottom of the fixing assembly (1), the abutment part (152) is in contact with the circumferential surface of the electromagnet (4), and the inclined part (153) faces outward away from the electromagnet (4). When the magnetic accumulator (8) is attracted to the electromagnet (4), the outer circumferential surface of the magnetic accumulator (8) comes into contact with the abutment part (152).

5. The ball impact tester according to claim 1, characterized in that, It also includes a universal joint (9) disposed between the lifting assembly (2) and the fixing assembly (1), one end of the universal joint (9) being fixed to the lifting assembly (2) and the other end being fixed to the fixing assembly (1); The gravity distribution of the combined structure of the fixed component (1), height sensor (3), electromagnet (4), control component (6) and power supply component (7) is uniform.

6. The ball impact tester according to claim 5, characterized in that, The universal joint (9) consists of a fixed ring (91) and a ball joint (92) that is movably connected to the bottom of the fixed ring (91). The top end of the fixing ring (91) is fixedly connected to the bottom end of the lifting assembly (2), and the bottom end of the fixing ring (91) is provided with a ball groove (911). The ball head (92) includes a shaft (921) and a ball head (922) located at one end of the shaft (921). The ball head (922) is disposed in a ball groove (911) and rotates in the ball groove (911). The other end of the shaft (921) of the ball head (92) is fixedly connected to the fixing assembly (1).

7. The ball impact tester according to claim 1, characterized in that, The fixing component (1) includes a housing (11) with an opening at the top and a top cover (12) that is detachably connected to the housing (11). A mounting plate (13) is fixedly installed at the bottom of the inner cavity of the housing (11), and an electromagnet (4) is fixedly installed on the bottom surface of the mounting plate (13). The bottom center of the housing (11) has a through hole (112), and the outer circumferential surface of the electromagnet (4) is embedded in the through hole (112).

8. The ball impact tester according to claim 7, characterized in that, A second through hole (113) is provided on one side of the bottom end face of the housing (11). The mounting plate (13) has a third through hole (132) that corresponds to the second through hole (113) above and below. The height sensor (3) is inserted in the third through hole (132). The bottom end of the height sensor (3) is located at the position of the second through hole (113). The height sensor (3) is fixedly connected to the upper surface of the mounting plate (13) by the bracket (14).

9. The ball impact tester according to claim 7, characterized in that, The power supply assembly (7) includes a battery (71) fixedly mounted on the upper surface of the mounting plate (13) and a power switch (73) electrically connected to the battery (71). The power switch (73) is fixedly mounted on the outer wall of the housing (11) of the fixing assembly (1).

10. The ball impact tester according to claim 1, characterized in that, It includes a controller (61) fixedly installed inside the fixing component (1), a release switch (62) fixedly installed on the lifting component (2), and a display screen (63) fixedly installed on the outside of the fixing component (1).

Images