Pendulum impact testing device

Abstract

The embodiment of the utility model provides a pendulum bob impact test device, which comprises a mounting seat, a pendulum bob mechanism and a brake mechanism, the pendulum bob mechanism is rotatably connected with the mounting seat, the pendulum bob mechanism can rotate relative to the mounting seat, and the pendulum bob mechanism is used for impacting an object to be tested so as to carry out an impact test on the object to be tested; the braking mechanism is installed on the installation base and used for abutting against the pendulum bob mechanism under the action of electromagnetic force or external force applied by a user so as to brake the rotating pendulum bob mechanism through friction force. The pendulum impact testing device provided by the embodiment of the utility model at least has the following beneficial effects: the braking mechanism is arranged and can be abutted against the pendulum mechanism under the action of electromagnetic force or external force applied by a user, so that the rotating pendulum mechanism is braked through friction force, the user does not need to catch the pendulum mechanism by hands, and the operation is simple and convenient. And meanwhile, the pendulum bob mechanism can be quickly stopped, so that the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of impact testing, in particular to a pendulum impact testing device. Background Art

[0002] Pendulum impact testing is a common means to detect the quality of product parts. It impacts the product parts with a pendulum to detect whether the strength of the product parts is qualified. In the prior art, after the pendulum impact testing is completed, due to the very small friction force on the pendulum mechanism, it takes a long time for the pendulum mechanism to stop, which greatly affects the testing efficiency. If the user catches the pendulum mechanism by hand in order to make the pendulum mechanism stop quickly, the user is very likely to get injured, especially for the pendulum mechanism with high energy. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a pendulum impact testing device, which can reduce the risk of user injury and make the pendulum mechanism stop quickly.

[0004] An embodiment of the utility model provides a pendulum impact testing device, which includes a mounting seat, a pendulum mechanism and a braking mechanism. The pendulum mechanism is rotatably connected to the mounting seat and can rotate relative to the mounting seat. The pendulum mechanism is used to impact an object to be tested for impact testing on the object to be tested. The braking mechanism is installed on the mounting seat and is used to abut against the pendulum mechanism under the action of electromagnetic force or an external force applied by the user, so as to brake the rotating pendulum mechanism through friction.

[0005] The pendulum impact testing device provided by the embodiment of the utility model has at least the following beneficial effects:

[0006] By setting the braking mechanism, the braking mechanism can abut against the pendulum mechanism under the action of electromagnetic force or an external force applied by the user, so as to brake the rotating pendulum mechanism through friction. There is no need for the user to catch the pendulum mechanism by hand, reducing the risk of user injury. At the same time, the pendulum mechanism can also stop quickly, thus improving the testing efficiency.

[0007] In an embodiment of this embodiment, the braking mechanism includes a friction block, and the friction block is movably connected to the mounting seat and can move relative to the mounting seat to abut against the pendulum mechanism.

[0008] In an embodiment of this implementation manner, the friction block is provided with a rotating part and a limiting part. The rotating part is rotatably connected to the mounting seat. The limiting part is connected to the rotating part. One of the limiting part and the mounting seat is provided with a limiting hole, and the other of the limiting part and the mounting seat is provided with a limiting pin. The limiting pin extends into the limiting hole to limit the relative rotation angle between the friction block and the mounting seat.

[0009] In an embodiment of this implementation manner, an abutting part is provided between the rotating part and the limiting part. The abutting part includes a first abutting surface. The pendulum mechanism includes a second abutting surface. The first abutting surface faces the second abutting surface, and the contours of the first abutting surface and the second abutting surface correspond to each other.

[0010] In an embodiment of this implementation manner, the braking mechanism includes a linkage. The linkage is connected to the friction block. The linkage is used for a user to apply an external force to drive the friction block to move relative to the mounting seat.

[0011] In an embodiment of this implementation manner, the linkage includes a rope and a pulling block. One end of the rope is connected to the friction block, and the other end of the rope is connected to the pulling block. The pulling block is rotatably connected to the mounting seat. The pulling block is used for a user to apply a pulling force to rotate relative to the mounting seat and drive the friction block to move relative to the mounting seat through the rope, so that the friction block abuts against the pendulum mechanism.

[0012] In an embodiment of this implementation manner, the mounting seat is provided with a cavity. The friction block is arranged in the cavity. One end of the rope is located in the cavity and is connected to the friction block, and the other end of the rope extends out of the cavity to be connected to the pulling block.

[0013] In an embodiment of this implementation manner, the pendulum impact test device further includes a reset mechanism. The reset mechanism is installed on the mounting seat and is connected to the friction block. The reset mechanism is used to reset the friction block so that the friction block is separated from the pendulum mechanism.

[0014] In an embodiment of this implementation manner, the braking mechanism includes a controller and an electromagnetic brake. The electromagnetic brake is arranged on the mounting seat. The controller is electrically connected to the electromagnetic brake. The controller is used to control the electromagnetic brake to be powered on so that the electromagnetic brake locks the pendulum mechanism.

[0015] In an embodiment of this implementation manner, the pendulum mechanism includes a pendulum and a rotating shaft. The pendulum is arranged on the rotating shaft. The rotating shaft is rotatably connected to the mounting seat. The braking mechanism is used to abut against the rotating shaft to brake the rotating pendulum mechanism through friction.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments, where:

[0018] Figure 1 is a three-dimensional structural schematic diagram of a pendulum impact testing device provided by an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a three-dimensional structural schematic diagram of the pendulum impact testing device from another perspective;

[0020] Figure 3 is Figure 2 an enlarged structural schematic diagram of region I of

[0021] Figure 4 is Figure 1 a structural schematic diagram of the pendulum impact testing device in the upward viewing direction;

[0022] Figure 5 is a structural schematic diagram of a braking mechanism of an embodiment of the present utility model when not braking;

[0023] Figure 6 is Figure 5 a structural schematic diagram of the braking mechanism when braking.

[0024] Reference Signs:

[0025] Pendulum impact testing device 1000; mounting base 10; top shell 11; base 12; support feet 121; limit blocks 122; cavity 101; through hole 102; pendulum mechanism 20; rotating shaft 21; braking mechanism 30; friction block 31; rotating part 311; limiting part 312; limiting pin 3121; limiting hole 3122; abutting part 313; first abutting surface 3131; second abutting surface 201; linkage 32; rope 321; pulling block 322; controller 43; electromagnetic brake 44; electromagnetic disk 441; brake disk 442; reset mechanism 40. Detailed Embodiments

[0026] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0030] In the description of the present utility model, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic three-dimensional structure diagram of a pendulum impact testing device 1000 provided by an embodiment of the present utility model; Figure 2 is Figure 1 a schematic three-dimensional structure diagram of the pendulum impact testing device 1000 in another perspective. An embodiment of the present utility model provides a pendulum impact testing device 1000, and the pendulum impact testing device 1000 includes a mounting base 10, a pendulum mechanism 20, and a braking mechanism 30. The pendulum mechanism 20 is rotatably connected to the mounting base 10, the pendulum mechanism 20 can rotate relative to the mounting base 10, and the pendulum mechanism 20 is used to impact an object to be tested to perform an impact test on the object to be tested. The braking mechanism 30 is mounted on the mounting base 10 and is used to abut against the pendulum mechanism 20 under the action of electromagnetic force or an external force applied by a user to brake the rotating pendulum mechanism 20 through friction.

[0032] Specifically, the object to be measured can be various parts or products such as plastic parts and metal parts. A jig (not shown) is provided on the mounting base 10, and the jig is used to mount the object to be measured. It can be understood that the friction force between the pendulum mechanism 20 and the mounting base 10 is generally relatively small to facilitate impact testing. However, this also causes the natural stopping time of the pendulum mechanism 20 to be quite long in the absence of other force interference, and the waiting time required for the next round of testing is relatively long, affecting the testing efficiency.

[0033] The pendulum impact testing device 1000 provided by the embodiment of the present utility model, by providing a braking mechanism 30, the braking mechanism 30 can be in contact with the pendulum mechanism 20 under the action of electromagnetic force or an external force applied by the user, so as to brake the rotating pendulum mechanism 20 through friction force, without the user having to catch the pendulum mechanism 20 by hand, reducing the risk of user injury. At the same time, the pendulum mechanism 20 can also stop quickly, thereby improving the testing efficiency.

[0034] In an embodiment of this embodiment, please refer to Figure 1 and Figure 2 The pendulum mechanism 20 includes a pendulum (not shown) and a rotating shaft 21. The pendulum is arranged on the rotating shaft 21, and the rotating shaft 21 is rotatably connected to the mounting base 10. The braking mechanism 30 is used to contact the rotating shaft 21 to brake the rotating pendulum mechanism 20 through friction force. Specifically, one end of the rotating shaft 21 is provided with a pendulum, and the other end of the rotating shaft 21 can be in contact with the braking mechanism 30. With such a setting, the braking mechanism 30 can brake the pendulum by contacting the rotating shaft 21, and the structure is relatively simple and the cost is relatively low.

[0035] In an embodiment of this embodiment, please refer to Figure 1 and Figure 2, the braking mechanism 30 includes a friction block 31. The friction block 31 is movably connected to the mounting seat 10, and the friction block 31 can move relative to the mounting seat 10 to abut against the pendulum mechanism 20. Specifically, the form of the movable connection between the friction block 31 and the mounting seat 10 can be selected as a sliding connection and a rotational connection. When the friction block 31 and the mounting seat 10 are in a sliding connection, the friction block 31 can slide relative to the mounting seat 10 and approach the pendulum mechanism 20 to abut against the pendulum mechanism 20, so that the pendulum mechanism 20 can be braked by friction, and the friction block 31 can slide relative to the mounting seat 10 and move away from the pendulum mechanism 20 to separate from the pendulum mechanism 20, thereby releasing the pendulum mechanism 20. When the friction block 31 and the mounting seat 10 are in a rotational connection, the friction block 31 can rotate relative to the mounting seat 10 and approach the pendulum mechanism 20 to abut against the pendulum mechanism 20, so that the pendulum mechanism 20 can be braked by friction, and the friction block 31 can rotate relative to the mounting seat 10 and move away from the pendulum mechanism 20 to separate from the pendulum mechanism 20, thereby releasing the pendulum mechanism 20. By setting the friction block 31 to be movably connected to the mounting seat 10, it is convenient to brake and release the pendulum mechanism 20 through the friction block 31, making the operation of the impact test simple.

[0036] In an embodiment of this embodiment, please refer to Figure 2 and Figure 3 , Figure 3 is Figure 2 An enlarged structural schematic diagram of region I of. The friction block 31 is provided with a rotating portion 311 and a limiting portion 312. The rotating portion 311 is rotatably connected to the mounting seat 10, and the limiting portion 312 is connected to the rotating portion 311. One of the limiting portion 312 and the mounting seat 10 is provided with a limiting hole 3122, and the other of the limiting portion 312 and the mounting seat 10 is provided with a limiting pin 3121. The limiting pin 3121 extends into the limiting hole 3122 to limit the relative rotation angle between the friction block 31 and the mounting seat 10. Specifically, the rotating portion 311 is rotatably connected to the mounting seat 10 through a rotating shaft. The limiting hole 3122 is a strip-shaped hole extending along an arc, so that when the rotating portion 311 rotates relative to the mounting seat 10, the limiting pin 3121 can move along the limiting hole 3122. It can be understood that the cooperation between the limiting pin 3121 and the limiting hole 3122 can form a constraint, so that the rotation angle between the friction block 31 and the mounting seat 10 is within a reasonable range. If the relative rotation angle is too large, it is easy to cause excessive extrusion between the friction block 31 and the pendulum mechanism 20, and the friction block 31 and the pendulum mechanism 20 are likely to be damaged. If the relative rotation angle is too small, it is easy to cause insufficient friction between the friction block 31 and the pendulum mechanism 20, and the time required for the pendulum mechanism 20 to stop is too long. At the same time, the existence of the limiting hole 3122 and the limiting pin 3121 facilitates resetting through an elastic member such as a spring.

[0037] In this embodiment, the limit pin 3121 is disposed on the mounting base 10, and the limit hole 3122 is formed on the limiting portion 312. In other embodiments, the limit pin 3121 may also be disposed on the limiting portion 312, and the limit hole 3122 is formed on the mounting base 10.

[0038] In an embodiment of this implementation manner, please refer to Figure 2 and Figure 3 , a contact portion 313 is provided between the rotating portion 311 and the limiting portion 312. The contact portion 313 includes a first contact surface 3131, and the pendulum mechanism 20 includes a second contact surface 201. The first contact surface 3131 faces the second contact surface 201, and the contours of the first contact surface 3131 and the second contact surface 201 correspond. Specifically, the second contact surface 201 is the outer peripheral surface of the rotating shaft 21 of the pendulum mechanism 20, that is, the second contact surface 201 is an arc surface, the first contact surface 3131 is an arc surface corresponding to the second contact surface 201, and the radii of the two arc surfaces are similar or the same, so that the first contact surface 3131 and the second contact surface 201 can be in full contact. In this way, the first contact surface 3131 and the second contact surface 201 with corresponding contours can be in full contact to increase the frictional force received by the pendulum mechanism 20, which is beneficial to quickly stopping the pendulum mechanism 20.

[0039] In an embodiment of this implementation manner, please refer to Figure 2 and Figure 3 , the braking mechanism 30 includes a linkage member 32. The linkage member 32 is connected to the friction block 31, and the linkage member 32 is used for a user to apply an external force to drive the friction block 31 to move relative to the mounting base 10. Specifically, in this embodiment, the friction block 31 is rotatably connected to the mounting base 10, and the user can apply an external force to the linkage member 32 to drive the friction block 31 to rotate relative to the mounting base 10 so that the friction block 31 abuts against the pendulum mechanism 20. In other embodiments, the friction block 31 may also be slidably connected to the mounting base 10, and the user can apply an external force to the linkage member 32 to drive the friction block 31 to slide relative to the mounting base 10 so that the friction block 31 abuts against the pendulum mechanism 20. The external force applied by the user may be a force in the form of a thrust, a pull force, a torque, etc. In this embodiment, the user pulls the linkage member 32 by a pull force to drive the friction block 31 to rotate relative to the mounting base 10. By providing the linkage member 32, it is convenient for the user to brake the pendulum mechanism 20 by an external force.

[0040] In an embodiment of this implementation manner, please refer to Figure 1 , Figure 2 and Figure 4 , Figure 4 is Figure 1Schematic structural diagram of the pendulum impact test device 1000 in the upward viewing direction. The linkage 32 includes a rope 321 and a pulling block 322. One end of the rope 321 is connected to the friction block 31, and the other end of the rope 321 is connected to the pulling block 322. The pulling block 322 is rotatably connected to the mounting base 10. The pulling block 322 is used for a user to apply a pulling force to rotate relative to the mounting base 10 and drive the friction block 31 to move relative to the mounting base 10 through the rope 321, so that the friction block 31 abuts against the pendulum mechanism 20. Specifically, the rope 321 is connected to the limiting portion 312. When the user applies a pulling force to the pulling block 322, the rope 321 can apply a downward pulling force to the limiting portion 312, causing the rotating portion 311 to rotate clockwise relative to the mounting base 10 (the clockwise direction is defined relative to Figure 2 the perspective of). The abutting portion 313 approaches the rotating shaft 21 of the pendulum mechanism 20 and abuts against the rotating shaft 21. With such a setting, the way for the user to brake the pendulum is relatively simple. At the same time, the flexible rope 321 is used to connect the pulling block 322 and the friction block 31, so as to facilitate setting the pulling block 322 at a position convenient for the user to operate and facilitate the user to perform the operation.

[0041] In an embodiment of this implementation manner, please refer to Figure 1 、 Figure 2 and Figure 4 , the mounting base 10 is provided with a cavity 101, and the friction block 31 is arranged in the cavity 101. One end of the rope 321 is located in the cavity 101 and is connected to the friction block 31. The other end of the rope 321 extends out of the cavity 101 to be connected to the pulling block 322. Specifically, the mounting base 10 includes a top shell 11 and a base 12. The top shell 11 is arranged on the top side of the base 12, and the bottom side of the base 12 is used to be arranged on a support surface such as the ground, a desktop, the surface of other devices, etc. The cavity 101 is opened in the top shell 11, and the base 12 is provided with a through hole 102 communicating with the cavity 101 for the rope 321 to pass through. The rope 321 includes two sections, one section is arranged in the cavity 101 and is connected to the friction block 31, and the other section extends to the bottom surface of the base 12 through the through hole 102. With such a setting, the closing requirement of the friction block 31 can be met, the service life of the friction block 31 can be extended, and at the same time, it is convenient to set the pulling block 322 at a position convenient for the user to use.

[0042] In this embodiment, please refer to Figure 1 、 Figure 2 and Figure 4 , a plurality of support feet 121 are arranged on the bottom side of the base 12. The plurality of support feet 121 support on the support surface and make the bottom surface of the base 12 have a spacing distance from the support surface. So that the user can extend his hand under the bottom side of the base 12 to apply an external force to the pulling block 322.

[0043] In this embodiment, please refer to Figure 1 、 Figure 2 andFigure 4 On the bottom side of the base 12, a limiting block 122 is further provided, and the limiting block 122 can be in contact with the pulling block 322 to limit the pulling block 322.

[0044] In an embodiment of this implementation manner, please refer to Figure 2 and Figure 3 , the pendulum impact test device 1000 further includes a reset mechanism 40. The reset mechanism 40 is installed on the mounting base 10 and is connected to the friction block 31. The reset mechanism 40 is used to reset the friction block 31 so that the friction block 31 is separated from the pendulum mechanism 20. Specifically, in this embodiment, the reset mechanism 40 is a spring. One end of the spring is connected to the mounting base 10, and the other end of the spring is connected to the limiting portion 312. The rope 321 and the spring are respectively connected to opposite sides of the limiting portion 312, so as to facilitate the spring to provide an elastic force to reset the friction block 31. By providing the reset mechanism 40, the reset mechanism 40 can separate the friction block 31 from the pendulum mechanism 20 after the pendulum mechanism 20 stops braking, so as to facilitate the next test.

[0045] In an embodiment of this implementation manner, please refer to Figure 5 and Figure 6 , Figure 5 is a schematic structural diagram of the braking mechanism 30 when it has not stopped braking in an embodiment of an implementation manner of the present invention; Figure 6 is Figure 5 a schematic structural diagram of the braking mechanism 30 of

[0046] when it stops braking. The braking mechanism 30 includes a controller 43 and an electromagnetic brake 44. The electromagnetic brake 44 is provided on the mounting base 10, and the controller 43 is electrically connected to the electromagnetic brake 44. The controller 43 is used to control the electromagnetic brake 44 to be energized so that the electromagnetic brake 44 locks the pendulum mechanism 20. Specifically, the electromagnetic brake 44 includes an electromagnetic disk 441 and a brake disk 442. The electromagnetic disk 441 is electrically connected to the controller 43, and the brake disk 442 is disposed on the end face of the rotating shaft 21 of the pendulum mechanism 20, and the brake disk 442 is connected to the rotating shaft 21 through a member that can be reset such as a leaf spring. A coil is provided in the electromagnetic disk 441, and the brake disk 442 has a magnetic structure. The controller 43 controls the coil to be energized, and the coil adsorbs the brake disk 442 through electromagnetic force, so that the brake disk 442 and the electromagnetic disk 441 are closely attached to brake the pendulum mechanism 20 through friction. Preferably, the controller 43 has the ability to identify the impact detection result, so that when the controller 43 recognizes the end of the impact detection, the controller 43 can timely control the electromagnetic disk 441 to be energized to achieve braking. By providing the controller 43 and the electromagnetic brake 44, the impact test can be automated.The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant technical field. In addition, the embodiments of the present utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A pendulum impact testing device, characterized in that, Comprising: Mounting base; Pendulum mechanism, rotatably connected to the mounting base, the pendulum mechanism being rotatable relative to the mounting base, the pendulum mechanism being used to impact a test object to perform an impact test on the test object; Braking mechanism, mounted on the mounting base and used to abut against the pendulum mechanism under the action of electromagnetic force or an external force applied by a user, so as to brake the rotating pendulum mechanism by friction.

2. The pendulum impact testing device according to claim 1, wherein, The braking mechanism includes a friction block, the friction block is movably connected to the mounting base, and the friction block is movable relative to the mounting base to abut against the pendulum mechanism.

3. The pendulum impact testing device according to claim 2, characterized in that, The friction block is provided with a rotating part and a limiting part, the rotating part is rotatably connected to the mounting base, the limiting part is connected to the rotating part, one of the limiting part and the mounting base is provided with a limiting hole, and the other of the limiting part and the mounting base is provided with a limiting pin, and the limiting pin extends into the limiting hole to limit the relative rotation angle between the friction block and the mounting base.

4. The pendulum impact testing device according to claim 3, characterized in that An abutting part is provided between the rotating part and the limiting part, the abutting part includes a first abutting surface, the pendulum mechanism includes a second abutting surface, the first abutting surface is opposite to the second abutting surface, and the contours of the first abutting surface and the second abutting surface correspond to each other.

5. The pendulum impact testing device according to claim 2, characterized in that, The braking mechanism includes a linkage, the linkage is connected to the friction block, and the linkage is used for a user to apply an external force to drive the friction block to move relative to the mounting base.

6. The pendulum impact testing device according to claim 5, wherein The linkage includes a rope and a pulling block, one end of the rope is connected to the friction block, the other end of the rope is connected to the pulling block, the pulling block is rotatably connected to the mounting base, and the pulling block is used for a user to apply a pulling force to rotate relative to the mounting base and drive the friction block to move relative to the mounting base through the rope, so that the friction block abuts against the pendulum mechanism.

7. The pendulum impact testing device according to claim 6, wherein, The mounting base is provided with a cavity, the friction block is arranged in the cavity, one end of the rope is located in the cavity and is connected to the friction block, and the other end of the rope extends out of the cavity to be connected to the pulling block.

8. The pendulum impact testing device according to claim 2, wherein, The pendulum impact test device further includes a reset mechanism, the reset mechanism is mounted on the mounting base and is connected to the friction block, and the reset mechanism is used to reset the friction block so that the friction block is separated from the pendulum mechanism.

9. The pendulum impact testing device according to claim 1, wherein, The braking mechanism includes a controller and an electromagnetic brake, the electromagnetic brake is arranged on the mounting base, the controller is electrically connected to the electromagnetic brake, and the controller is used to control the electromagnetic brake to be powered on so that the electromagnetic brake locks the pendulum mechanism.

10. The pendulum impact testing device according to claim 1, characterized in that, The pendulum mechanism includes a pendulum and a rotating shaft, the pendulum is arranged on the rotating shaft, the rotating shaft is rotatably connected to the mounting base, and the braking mechanism is used to abut against the rotating shaft to brake the rotating pendulum mechanism by friction.

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