Falling ball impact force testing device

Abstract

The utility model discloses a falling ball impact force testing device which comprises a bottom plate, an acceleration sensor, a positioning table, a rotating plate, a stand column, a mounting plate, an electromagnet, a counterweight ball weight and a connecting mechanism, a piece to be tested is placed in a positioning groove of the positioning table, a control mechanism powers off the electromagnet, and the counterweight ball weight falls to impact the piece to be tested. The acceleration sensor records the acceleration value when the counterweight ball code impacts the to-be-tested piece for the first time, the impact force borne by the to-be-tested piece can be measured by combining the self mass of the counterweight ball code, and the counterweight ball code is in threaded connection with the connecting mechanism through the threaded hole, so that the counterweight ball codes with different masses can be replaced conveniently. The bearing performance of a to-be-tested piece under different impact forces can be tested, meanwhile, the limit of the impact force borne by the to-be-tested piece is facilitated, the rotating plate can abut against the end face of the to-be-tested piece in the testing process, the bearing performance of the to-be-tested piece under the impact force in the fixed state can be tested, the scene that a television is fixed to a wall and is impacted can be simulated, and the testing efficiency is improved. And the test result is more comprehensive.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal panel detection, in particular to a falling ball testing impact force device. Background Art

[0002] Used to test the buffer performance of some structures in SCF modules (such as OLED, LCD and other display modules), including the drop ball test. The drop ball test is to drop a steel ball of specified weight from a specified height to the specified area to be tested, and observe whether the screen surface is uneven.

[0003] The existing Chinese patent with authorization announcement number CN218412103U discloses a glass impact resistance testing device, including a test base and a support rod installed on the back of the test base; a slide groove is arranged on the top of the support rod, and a movable plate is slidably arranged in the slide groove; a placement cavity in the shape of a sink in the center of the test base, a steel ball adsorption assembly is installed under the movable plate, and the position of the steel ball adsorption assembly corresponds to the central position of the placement cavity, which is convenient for detecting the damage of tempered glass, laminated glass and insulating glass under different impact forces, and does not require manual throwing, which is easy to operate.

[0004] The above-mentioned existing technical solutions have the disadvantages that: during the impact test, the impact force on the test piece cannot be recorded, and the impact force limit that the test piece can withstand cannot be measured, which has certain limitations in trial use. Utility Model Content

[0005] The utility model aims to provide a falling ball impact test device to solve the technical problems in the prior art that the impact force on the test piece cannot be recorded during the impact test, the impact force limit that the test piece can withstand cannot be measured, and the trial use has certain limitations.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A falling ball impact force test device, comprising:

[0008] A bottom plate, an acceleration sensor is fixedly connected to the bottom plate, a support platform is fixedly connected to the acceleration sensor, a positioning platform is fixedly connected to the support platform, a vertical column is arranged on one side of the positioning platform, a mounting plate is fixedly connected to the upper end of the column, a docking plate is fixedly connected to the mounting plate, and an electromagnet is arranged on the docking plate;

[0009] The connecting mechanism includes a mechanism mounting plate, one end surface of which is fixedly connected with a vertically arranged screw rod, a counterweight ball code is threadedly connected to the screw rod, and the other end surface of the mechanism mounting plate is fixedly connected with a magnet, which is magnetically connected to the electromagnet on the docking plate.

[0010] As a further solution of the present invention: the acceleration sensor is a piezoelectric acceleration sensor.

[0011] As a further solution of the utility model: the weighted ball weight includes a ball weight body, a threaded hole is opened on the ball weight body, and the ball weight body is threadedly connected to the screw rod through the threaded hole.

[0012] As a further solution of the utility model: a docking groove is provided on the docking plate, the electromagnet is fixedly connected in the docking groove, and the magnet is sleeved in the docking groove and magnetically connected to the electromagnet.

[0013] As a further solution of the utility model: the positioning platform is symmetrically provided with mounting seats near the four corners, the mounting seats are fixedly connected to the supporting platform, and a rotating plate is rotatably provided on the mounting seats.

[0014] As a further solution of the utility model: a rotating shaft is fixedly connected to the rotating plate, a bearing is embedded in the mounting seat, an outer ring of the bearing is fixedly connected to the mounting seat, and the rotating shaft is sleeved and fixedly connected to the inner ring of the bearing.

[0015] Beneficial effects of the utility model:

[0016] 1. When the utility model is used, the workpiece to be tested is placed in the positioning groove of the positioning table, the control mechanism cuts off the power of the electromagnet, the weight ball falls and impacts the workpiece to be tested, and the acceleration sensor records the acceleration value of the weight ball when it first impacts the workpiece to be tested, and then combined with the weight ball's own mass, the impact force on the workpiece to be tested can be measured. The weight ball is threadedly connected to the connecting mechanism through a threaded hole, so that it is easy to replace the weight ball with different masses, and the bearing performance of the workpiece to be tested under different impact forces can be tested, and at the same time, it is convenient to measure the impact force limit of the workpiece to be tested;

[0017] 2. The positioning platform of the utility model has mounting seats symmetrically distributed near the corners. The mounting seats are fixedly connected to the supporting platform. A rotating plate is rotatably arranged on the mounting seat. During the test, the rotating plate can be abutted against the end face of the test piece to measure the bearing performance of the test piece under the impact force in a fixed state. The scene of a TV fixed on the wall and subjected to impact can be simulated, making the test result more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the forward structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the connection relationship between the mounting plate, the docking plate and the electromagnet of the utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the connection mechanism of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the weighted ball code of the utility model.

[0024] In the figure: 1, base plate; 2, acceleration sensor; 3, supporting platform; 4, positioning platform; 5, positioning groove; 6, mounting seat; 7, rotating plate; 8, column; 9, control mechanism; 10, mounting plate; 11, docking plate; 12, docking groove; 13, electromagnet; 14, counterweight ball code; 141, ball code body; 142, threaded hole; 15, connecting mechanism; 151, mechanism mounting plate; 152, screw; 153, magnet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 5 As shown, a falling ball impact force test device includes a base plate 1 and a connecting mechanism 15, the base plate 1 is fixedly connected to an acceleration sensor 2, the acceleration sensor 2 is fixedly connected to a supporting platform 3, the supporting platform 3 is fixedly connected to a positioning platform 4, a vertically arranged column 8 is arranged on one side of the positioning platform 4, a mounting plate 10 is fixedly connected to the upper end of the column 8, a docking plate 11 is fixedly connected to the mounting plate 10, an electromagnet 13 is arranged on the docking plate 11, the connecting mechanism 15 includes a mechanism mounting plate 151, a vertically arranged screw rod 152 is fixedly connected to one end surface of the mechanism mounting plate 151, a counterweight ball code 14 is threadedly connected to the screw rod 152, a magnet 153 is fixedly connected to the other end surface of the mechanism mounting plate 151, and the magnet 153 is magnetically connected to the electromagnet 13 on the docking plate 11.

[0027] The positioning table 4 is provided with a positioning groove 5 for placing the test piece. The acceleration sensor 2 is a piezoelectric acceleration sensor, which is also called a piezoelectric accelerometer and belongs to an inertial sensor. It uses the piezoelectric effect of certain substances such as quartz crystals. When the accelerometer is vibrated, the force applied by the mass block to the piezoelectric element also changes. When the measured vibration frequency is much lower than the natural frequency of the accelerometer, the change in force is proportional to the measured acceleration.

[0028] The weighted ball weight 14 includes a ball weight body 141 . A threaded hole 142 is formed on the ball weight body 141 . The ball weight body 141 is threadedly connected to a screw rod 152 through the threaded hole 142 .

[0029] A docking groove 12 is provided on the docking plate 11, and the electromagnet 13 is fixedly connected in the docking groove 12. The magnet 153 is sleeved in the docking groove 12 and is magnetically connected to the electromagnet 13. The column 8 is fixedly connected to the base plate 1. A control mechanism 9 is fixedly connected to the column 8. The control mechanism 9 is electrically connected to the electromagnet 13, and the control mechanism 9 is used to control the on and off of the electromagnet 13.

[0030] The positioning platform 4 is symmetrically provided with mounting seats 6 near the corners. The mounting seats 6 are fixedly connected to the supporting platform 3. A rotating plate 7 is rotatably provided on the mounting seat 6. A rotating shaft is fixedly connected to the rotating plate 7. A bearing is embedded in the mounting seat 6. The outer ring of the bearing is fixedly connected to the mounting seat 6. The rotating shaft is sleeved and fixedly connected to the inner ring of the bearing.

[0031] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0032] When in use, the piece to be tested is placed in the positioning groove 5 of the positioning platform 4, the control mechanism 9 cuts off the power to the electromagnet 13, and the counterweight ball code 14 falls to impact the piece to be tested. The acceleration sensor 2 records the acceleration value when the counterweight ball code 14 first impacts the piece to be tested, and then combined with the mass of the counterweight ball code 14 itself, the impact force on the piece to be tested can be measured. The counterweight ball code 14 is threadedly connected to the connecting mechanism 15 through the threaded hole 142, so that it is convenient to replace the counterweight ball code 14 of different masses, and the bearing performance of the piece to be tested under different impact forces can be tested, and at the same time, it is convenient to measure the impact force limit that the piece to be tested can withstand. The positioning platform 4 is symmetrically provided with mounting seats 6 near the corners on all sides, and the mounting seats 6 are fixedly connected to the supporting platform 3. A rotating plate 7 is rotatably arranged on the mounting seat 6. During the test, the rotating plate 7 can be abutted against the end face of the piece to be tested, and the bearing performance of the piece to be tested under the impact force in a fixed state can be measured. The scene of a TV fixed on a wall and subjected to impact can be simulated, so that the test result is more comprehensive.

[0033] Several embodiments of the utility model are described in detail above, but the embodiments of the utility model are not limited thereto and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A falling ball impact test device, characterized in that: include: A base plate (1), an acceleration sensor (2) is fixedly connected to the base plate (1), a support platform (3) is fixedly connected to the acceleration sensor (2), a positioning platform (4) is fixedly connected to the support platform (3), a vertically arranged column (8) is arranged on one side of the positioning platform (4), a mounting plate (10) is fixedly connected to the upper end of the column (8), a docking plate (11) is fixedly connected to the mounting plate (10), and an electromagnet (13) is arranged on the docking plate (11); The connecting mechanism (15) comprises a mechanism mounting plate (151), one end surface of the mechanism mounting plate (151) is fixedly connected with a vertically arranged screw rod (152), a counterweight ball code (14) is threadedly connected to the screw rod (152), and the other end surface of the mechanism mounting plate (151) is fixedly connected with a magnet (153), and the magnet (153) is magnetically connected to the electromagnet (13) on the docking plate (11).

2. A falling ball test impact force device according to claim 1, characterized in that: The acceleration sensor (2) is a piezoelectric acceleration sensor.

3. A falling ball impact test device according to claim 1, characterized in that: The weighted ball weight (14) comprises a ball weight body (141), a threaded hole (142) is provided on the ball weight body (141), and the ball weight body (141) is threadedly connected to a screw rod (152) through the threaded hole (142).

4. The falling ball impact test device according to claim 1, characterized in that: A docking groove (12) is provided on the docking plate (11), an electromagnet (13) is fixedly connected in the docking groove (12), and a magnet (153) is sleeved in the docking groove (12) and magnetically connected to the electromagnet (13).

5. The falling ball impact test device according to claim 1, characterized in that: The positioning platform (4) is symmetrically provided with mounting seats (6) near the four corners. The mounting seats (6) are fixedly connected to the supporting platform (3). A rotating plate (7) is rotatably provided on the mounting seats (6).

6. A falling ball impact test device according to claim 5, characterized in that: A rotating shaft is fixedly connected to the rotating plate (7), a bearing is embedded in the mounting seat (6), an outer ring of the bearing is fixedly connected to the mounting seat (6), and the rotating shaft is sleeved and fixedly connected to the inner ring of the bearing.

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