Impact testing machine

Abstract

The utility model relates to the field of test equipment, and discloses an impact testing machine, which comprises a frame body, a data reading assembly, a pendulum bob assembly, a limiting assembly and an alignment piece, a limiting groove is arranged in the limiting assembly along a first direction, a limiting step is formed in the limiting assembly along a second direction, and a test piece is arranged on the limiting step along the second direction. One side of the test piece abuts against the limiting step, and the test piece stretches across the limiting groove; the alignment piece is movably connected with the limiting assembly to form an alignment state and an impact state of the alignment piece; in the alignment state, the limiting assembly is located outside the limiting groove, the alignment piece is arranged above the limiting assembly in the second direction, the alignment piece stretches across the limiting groove, and the alignment piece is used for calibrating the position of the test piece; in the impact state, the alignment piece is arranged on one side of the limiting groove, and it is avoided that swinging of the pendulum bob assembly in the limiting groove is affected. According to the impact testing machine, the alignment piece is movably connected with the limiting assembly, and the alignment piece does not affect an impact test.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of test equipment, in particular to an impact testing machine. BACKGROUND

[0002] The pendulum impact testing machine is one of the impact testing machines, and is used for detecting the impact resistance of metal materials and non-metal materials under dynamic load, so as to judge the properties of the materials under dynamic load.

[0003] Before the pendulum impact testing machine tests the test piece, the test piece needs to be centered and corrected by using an alignment piece. However, the existing alignment piece is placed on the pendulum impact testing machine to center and correct the test piece when aligning. When impact testing is needed, the alignment piece is separated from the pendulum impact testing machine to avoid affecting the impact testing of the pendulum impact testing machine. However, after the alignment piece is separated from the pendulum impact testing machine, the alignment piece is easily lost. CONTENT OF THE UTILITY MODEL

[0004] The present application mainly solves the technical problem that the alignment piece is easily lost in the prior art. An impact testing machine is provided, in which an alignment piece is movably connected with a limiting component and the alignment piece does not affect impact testing.

[0005] In order to solve the above technical problem, the present application provides an impact testing machine for measuring the impact resistance of a test piece, wherein the test piece is provided with an alignment groove, and the impact testing machine comprises:

[0006] a frame body;

[0007] a data reading component arranged on the frame body;

[0008] a pendulum component rotatably connected with the frame body;

[0009] a limiting component, wherein a limiting groove is arranged in the limiting component along a first direction, and a limiting step is formed in the limiting component along a second direction, the test piece is arranged on the limiting step along the second direction, one side of the test piece abuts against the limiting step, and the test piece spans the limiting groove; and

[0010] when the pendulum component and the frame body rotate relative to each other, the pendulum component simultaneously swings in the limiting groove and impacts the test piece;

[0011] an alignment piece movably connected with the limiting component to form an alignment state and an impact state of the alignment piece; and

[0012] In the alignment state, the limiting component is located outside the limiting groove, the alignment piece is arranged above the limiting component along the second direction, the alignment piece spans the limiting groove, and the alignment piece is used for calibrating the position of the test piece.

[0013] In the impact state, the alignment piece is arranged on one side of the limiting groove, thereby avoiding affecting the swing of the pendulum assembly in the limiting groove.

[0014] In an implementation manner, the pendulum assembly comprises,

[0015] a swing arm, a first end of the swing arm being rotationally connected with the frame body;

[0016] an impact piece, a second end of the swing arm being fixedly connected with the impact piece; wherein,

[0017] when the swing arm and the frame body rotate, the impact piece simultaneously swings in the limiting groove and forms an impact on the test piece.

[0018] In an implementation manner, the data reading device comprises,

[0019] a dial, the dial being circumferentially marked with impact data;

[0020] a pointer, the pointer being rotationally connected with the dial, and the pointer being connected in series with the pendulum assembly.

[0021] In an implementation manner, the limiting component comprises a first limiting piece and a second limiting piece which are arranged at intervals along the second direction, the first limiting piece and the second limiting piece extend along the first direction and form the limiting groove between the first limiting piece and the second limiting piece.

[0022] In an implementation manner, the limiting component comprises a limiting protrusion, the limiting protrusion being arranged on the upper surface of the first limiting piece and the second limiting piece; the limiting face of the limiting protrusion is located on one side of the swing direction of the pendulum assembly, and the limiting face and the upper surface of the first limiting piece or the second limiting piece jointly form the limiting step.

[0023] In an implementation manner, the alignment piece is rotationally connected with the first limiting piece, and the rotation axis of the alignment piece is arranged along the first direction; the upper surface of the second limiting piece is provided with an alignment face, and the limiting step and the alignment face are arranged on two sides of the limiting protrusion respectively; in the alignment state, the alignment piece is attached to the alignment face, and the alignment piece and the alignment face are arranged in parallel.

[0024] In an implementation manner, the data reading device further comprises,

[0025] A locking structure is arranged on the swing path of the pendulum assembly and is arranged away from the limiting assembly.

[0026] In the aligned state, the pendulum assembly is located in the locking structure to form circumferential limitation for the pendulum assembly.

[0027] In an implementation, further comprising,

[0028] A first touch switch is arranged on the alignment surface, the first touch switch is in series with the locking structure, and the locking structure can release the circumferential limitation of the pendulum assembly when the alignment assembly is away from the first touch switch.

[0029] In an implementation, the locking structure comprises,

[0030] A locking body;

[0031] A first locking claw and a second locking claw are arranged on one side of the locking body, and the first locking claw and the second locking claw are movably connected to the locking body through a moving device.

[0032] A locking cavity comprises a first locking cavity, a second locking cavity and a third locking cavity, the first locking cavity is arranged on the side of the locking body close to the first locking claw and the second locking claw, the second locking cavity is arranged on the side of the first locking claw close to the second locking claw, and the third locking cavity is arranged on the side of the second locking claw close to the first locking claw.

[0033] In the aligned state, the second locking cavity and the third locking cavity move close to the first locking cavity to close the locking cavity, and the pendulum assembly is circumferentially limited in the locking cavity.

[0034] In the impact state, the second locking cavity and the third locking cavity move away from the first locking cavity to open the locking cavity, and the pendulum assembly is free to enter and exit the locking structure.

[0035] In an implementation, a second touch switch is arranged in the first locking cavity, the second touch switch is in series with the moving device, and the moving device drives the second locking cavity and the third locking cavity to move close to the first locking cavity and circumferentially limits the pendulum assembly in the locking cavity after the pendulum assembly contacts the second touch switch.

[0036] The alignment piece and the limiting assembly are movably connected in the application, avoiding separation of the alignment piece and the limiting assembly. In the movable connection of the alignment piece and the limiting assembly, an alignment state and an impact state are formed between the alignment piece and the limiting assembly. In the alignment state, the alignment piece is connected with the limiting assembly, and the alignment piece is used to correct the centering of the test piece. In the impact state, the alignment piece is moved to one side of the limiting assembly while ensuring that the alignment piece is connected with the limiting assembly, so as to avoid the influence of the alignment piece on the impact test of the test piece.

[0037] Therefore, the application has the characteristics of reasonable structure and convenient use. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a structural schematic diagram of an impact testing machine according to the application; Figure 1 Figure 1 is a structural schematic diagram of an impact testing machine according to the application;

[0039] Figure 2 is a structural schematic diagram of an alignment piece and a limiting assembly in an alignment state according to the application; Figure 2 Figure 3 is a structural schematic diagram of an alignment piece and a limiting assembly in an impact state according to the application;

[0040] Figure 3 Figure 4 is a structural schematic diagram of a locking structure in an impact state according to the application;

[0041] Figure 5 is a structural schematic diagram of a locking structure in an alignment state according to the application. Figure 4 Figure 6 is a structural schematic diagram of an impact testing machine according to the application.

[0042] Figure 5 Figure 7 is a structural schematic diagram of an impact testing machine according to the application.

[0043] Explanation of reference numerals in the drawings:

[0044] X, first direction; Y, second direction; Z, third direction;

[0045] 100, test piece;

[0046] 110, alignment groove;

[0047] 200, frame body;

[0048] 210, base; 220, vertical rod;

[0049] 300, data reading assembly;

[0050] 310, dial; 320, pointer;

[0051] 400, pendulum assembly;

[0052] 410, pendulum arm; 420, impact piece;

[0053] 500, limiting assembly;

[0054] ​​510, limiting groove; 520, limiting step; 530, first limiting piece; 540, second limiting piece; 550, limiting protrusion; 551, limiting surface; 560, alignment surface;

[0055] 600, locking structure;

[0056] 610, locking body; 620, first locking claw; 630, second locking claw; 640, moving device; 641, gear; 642, rack; 650, locking cavity; 651, first locking cavity; 652, second locking cavity; 653, third locking cavity; 660, second touch switch; 670, sliding block;

[0057] 700, first touch switch;

[0058] 800, alignment piece. DETAILED DESCRIPTION

[0059] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0060] The alignment piece in the prior art is prone to being lost.

[0061] Therefore, the present application provides an impact testing machine for measuring the impact resistance of a test piece, wherein the test piece is provided with an alignment groove, and the impact testing machine comprises,

[0062] A frame body;

[0063] A data reading assembly is arranged on the frame body.

[0064] A pendulum assembly is rotatably connected to the frame body.

[0065] A limiting assembly is provided with a limiting groove in a first direction, and a limiting step is formed in a second direction, wherein the test piece is arranged on the limiting step in the second direction, one side of the test piece abuts against the limiting step, and the test piece spans the limiting groove.

[0066] When the pendulum assembly and the frame body rotate, the pendulum assembly swings in the limiting groove and impacts the test piece.

[0067] An alignment piece is movably connected with the limiting assembly to form an alignment state and an impact state of the alignment piece.

[0068] In the alignment state, the limiting assembly is located outside the limiting groove, the alignment piece is arranged above the limiting assembly along the second direction, the alignment piece spans the limiting groove, and the alignment piece is used for calibrating the position of the test piece.

[0069] In the impact state, the alignment piece is arranged at one side of the limiting groove to avoid affecting the swing of the pendulum assembly in the limiting groove.

[0070] Embodiment 1

[0071] Please refer to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 , the first direction X is the length direction of the impact testing machine, that is, the left-right direction of the impact testing machine. The third direction Z is the height direction of the impact testing machine, that is, the up-down direction of the impact testing machine. In the present application, the data reading assembly 300 is above and the limiting assembly 500 is below. The second direction Y is the width direction of the limiting assembly 500, that is, the front-rear direction of the limiting assembly 500. In the present application, the first limiting piece 530 is in front and the second limiting piece 540 is in back.

[0072] Please refer to the accompanying drawings Figure 1 , the impact testing machine of the present application is a testing machine for conducting impact resistance test on the test piece 100. The specific working process of the impact testing machine is as follows: first, the pendulum assembly 400 is lifted, then the pendulum assembly 400 is released to free fall and impact the test piece 100, and finally the test piece 100 is destroyed. The impact testing machine can automatically calculate the impact resistance performance of the test piece 100 under dynamic load and reflect the related data on the data reading assembly 300.

[0073] In the present application, the center position of the test piece 100 is provided with an alignment groove 110 to facilitate the centering correction of the test piece 100 on the impact testing machine, and facilitate the notched sensitivity of the test piece 100.

[0074] In an embodiment, the material of the test piece 100 is metal or hard plastic.

[0075] Please refer to the accompanying drawings Figure 1As shown, the impact testing machine of the present application comprises a frame body 200, the frame body 200 comprises a base 210 and a vertical rod 220, the base 210 is arranged along the first direction X, the vertical rod 220 is arranged along the third direction Z, and the first end of the vertical rod 220 is connected with the base 210. The base 210 is used for stably supporting the entire impact testing machine, and the limiting assembly 500 is arranged on the base 210. The vertical rod 220 is used for further connecting the data reading assembly 300 and the pendulum assembly 400.

[0076] In an embodiment, the vertical rod 220 is arranged perpendicularly with the base 210.

[0077] Please refer to the accompanying drawings Figure 1 As shown, the impact testing machine of the present application comprises a data reading assembly 300, the data reading assembly 300 comprises a dial 310 and a pointer 320, the dial 310 is circumferentially engraved with impact data, and the unit of the impact data is joule per square meter (J / m²) or newton-meter (N·m). After the pendulum assembly 400 impacts the test piece 100, the pointer 320 generates rotation and points to the dial 310, so as to obtain the impact data of the impact testing machine. The second end of the vertical rod 220 is connected with the dial 310, and the second end of the vertical rod 220 is rotationally connected with the pointer 320.

[0078] In an embodiment, the dial 310 is a disc-shaped structure.

[0079] Please refer to the accompanying drawings Figure 1 As shown, the impact testing machine of the present application comprises a pendulum assembly 400, the pendulum assembly 400 comprises a swing arm 410 and an impact piece 420, the first end of the swing arm 410 is rotationally connected with the second end of the vertical rod 220, and the second end of the swing arm 410 is connected with the impact piece 420. When the swing arm 410 and the vertical rod 220 rotate, the impact piece 420 swings in the limiting groove 510 and forms an impact on the test piece 100.

[0080] In an embodiment, the rotation center of the pointer 320, the rotation center of the swing arm 410 and the center of the dial 310 coincide.

[0081] Please refer to the accompanying drawings Figure 1 As shown, the impact testing machine of the present application comprises a limiting assembly 500, the limiting assembly 500 is used for keeping the relative position of the test piece 100, so as to avoid displacement of the test piece 100 under the impact of the pendulum assembly 400.

[0082] Please refer to the accompanying drawings Figure 1As shown, the impact testing machine of the present application comprises an alignment piece 800, which is movably connected with the limiting assembly 500 to form an alignment state and an impact state of the alignment piece 800. In the alignment state, the alignment piece 800 is connected with the limiting assembly 500, and the alignment piece 800 is placed on the limiting assembly 500 to facilitate the centering correction of the test piece 100. In the impact state, the alignment piece 800 is still connected with the limiting assembly 500 to avoid the loss of the alignment piece 800 in the non-use state, but the alignment piece 800 is moved to one side of the limiting assembly 500 to avoid affecting the movement of the pendulum assembly 400 in the limiting assembly 500.

[0083] Please refer to the accompanying drawings Figure 1 As shown, the impact testing machine of the present application comprises a locking structure 600, which is arranged on the swing path of the pendulum assembly 400, and the locking structure 600 is arranged away from the limiting assembly 500. In the alignment state, the pendulum assembly 400 is located in the locking structure 600 to form a circumferential limiting of the pendulum assembly 400 to avoid the accidental falling of the pendulum assembly 400.

[0084] In an embodiment, the locking structure 600 realizes the circumferential limiting of the pendulum assembly 400 through the locking pendulum arm 410.

[0085] The accompanying drawings Figure 2 is a structural schematic view between the alignment piece 800 and the limiting assembly 500 in the alignment state of the present application. The accompanying drawings Figure 3 is a structural schematic view between the alignment piece 800 and the limiting assembly 500 in the impact state of the present application. Please refer to the accompanying drawings Figure 2 and the accompanying drawings Figure 3 As shown, the limiting assembly 500 of the present application comprises a first limiting piece 530 and a second limiting piece 540 which are arranged at intervals along the second direction Y, the first limiting piece 530 and the second limiting piece 540 extend along the first direction X, and form a limiting groove 510 located between the first limiting piece 530 and the second limiting piece 540. At the same time, the limiting groove 510 is arranged in the limiting assembly 500 along the first direction X.

[0086] Please refer to the accompanying drawings Figure 2 and the accompanying drawings Figure 3As shown, the limiting assembly 500 includes a limiting protrusion 550, the bottom of which is connected with the upper surfaces of the first and second limiting members 530 and 540 and extends upward along the third direction Z. The limiting assembly 500 includes a limiting step 520 for maintaining the relative position of the test piece 100. The limiting protrusion 550 has a limiting surface 551 on the side thereof facing the swinging direction of the pendulum assembly 400, i.e., the side of the limiting protrusion 550 facing the pendulum assembly 400 when the pendulum assembly 400 swings against the test piece 100. The limiting surface 551 and the upper surfaces of the first and second limiting members 530 and 540 together form the limiting step 520. In use, the bottom of the test piece 100 simultaneously contacts the upper surfaces of the first and second limiting members 530 and 540, and one side of the limiting member abuts against the limiting surface 551, so as to avoid the movement of the test piece 100 along the swinging direction of the pendulum assembly, i.e., the first direction X, when the pendulum assembly 400 impacts the test piece 100.

[0087] Please refer to the accompanying drawings Figure 2 and the accompanying drawings Figure 3 As shown, the alignment member 800 of the present application is movably connected with the first limiting member 530, and in an embodiment, the alignment member 800 is rotatably or slidably connected with the first limiting member 530. In a specific embodiment of the present application, the alignment member 800 is rotatably connected with the first limiting member 530. The alignment member 800 includes an alignment body arranged along the second direction Y and an alignment protrusion arranged along the first direction X, which is adapted with the alignment groove 110.

[0088] In an embodiment, the rotation axis of the alignment member 800 is arranged along the first direction X.

[0089] Please refer to the accompanying drawings Figure 3 As shown, the alignment member 800 is rotatably connected with the first limiting member 530, and the upper surface of the second limiting member 540 is provided with an alignment surface 560, and the limiting step 520 and the alignment surface 560 are arranged on the two sides of the limiting protrusion 550, respectively.

[0090] Under the rotatable connection between the alignment member 800 and the limiting assembly 500, the alignment state and the impact state of the alignment member 800 are formed.

[0091] Please refer to the accompanying drawings Figure 2As shown, in the alignment state, the test piece 100 is placed on the limiting step 520, and one side of the test piece 100 abuts against the limiting surface 551, and the test piece 100 spans the limiting groove 510. After the alignment piece 800 is rotated to the side of the second limiting piece 540, the bottom surface of the alignment piece 800 abuts against the alignment surface 560, and the bottom surface of the alignment piece 800 is arranged in parallel with the alignment surface 560, at this time, the alignment piece 800 also spans the limiting groove 510. Then, the alignment groove 110 of the test piece 100 is aligned with the alignment protrusion of the alignment piece 800, so as to realize the centering correction of the test piece 100. In the alignment state, the parallel arrangement of the bottom surface of the alignment piece 800 and the alignment surface 560 can realize the relative constancy of the position of the alignment piece 800, and is more conducive to the centering correction of the test piece 100 by the alignment piece 800.

[0092] Please refer to the accompanying drawings Figure 3 As shown, in the impact state, the alignment piece 800 is rotated to one side of the limiting groove 510, at this time, the limiting groove 510 does not contact the alignment piece 800, so as to avoid affecting the swing of the pendulum assembly 400 in the limiting groove 510.

[0093] Please refer to the accompanying drawings Figure 3 As shown, the first touch switch 700 is formed on the alignment surface 560, and the first touch switch 700 is connected in series with the locking structure 600. When the alignment piece 800 contacts the first touch switch 700, the locking structure 600 always keeps locking the pendulum assembly 400, so as to avoid the pendulum assembly 400 falling from the swing when the alignment piece 800 is still in the swing range of the pendulum assembly 400, and causing damage to the alignment piece 800. That is, when the alignment piece 800 is away from the first touch switch 700, the locking structure 600 can only release the circumferential phase of the pendulum assembly 400.

[0094] The accompanying drawings Figure 4 is a structural schematic view of the locking structure 600 in the impact state of the present application. The accompanying drawings Figure 5 is a structural schematic view of the locking structure 600 in the alignment state of the present application. Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 5 As shown, the locking structure 600 of the present application includes a locking body 610 and a locking claw, the locking claw includes a first locking claw 620 and a second locking claw 630, and the locking body 610, the first locking claw 620 and the second locking claw 630 are all arranged in extension along the second direction Y.

[0095] In an embodiment, the locking body 610 is arranged in parallel with the first locking claw 620 and the second locking claw 630.

[0096] Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 5As shown, the first locking claw 620 and the second locking claw 630 are arranged on one side of the locking body 610, and the first locking claw 620 and the second locking claw 630 are movably connected to the locking body 610 through the moving device 640.

[0097] In an embodiment, the moving device 640 includes a gear 641 and a rack 642, and in the present application, the gear 641 is a driving member to drive the rack 642 to move laterally. The moving device 640 is provided with two groups, which are arranged between the first locking claw 620 and the locking body 610 and between the second locking claw 630 and the locking body 610, respectively. Further, the gear 641 is arranged at both ends of the locking body 610, and the rack 642 is arranged on the side of the first locking claw 620 and the second locking claw 630 close to the locking body 610.

[0098] Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 5 As shown, the locking structure 600 of the present application further includes a locking cavity 650, which includes a first locking cavity 651, a second locking cavity 652, and a third locking cavity 653. The first locking cavity 651 is arranged on the side of the locking body 610 close to the first locking claw 620 and the second locking claw 630, the second locking cavity 652 is arranged on the side of the first locking claw 620 close to the second locking claw 630, and the third locking cavity 653 is arranged on the side of the second locking claw 630 close to the first locking claw 620.

[0099] In the aligned state, the second locking cavity 652 and the third locking cavity 653 move close to the first locking cavity 651 to close the locking cavity 650, and the pendulum assembly 400 is circumferentially limited in the locking cavity 650. In an embodiment, the pendulum arm 410 is arranged in the locking cavity 650 to form the circumferential limitation of the pendulum assembly 400.

[0100] In the impact state, the second locking cavity 652 and the third locking cavity 653 move away from the first locking cavity 651 to open the locking cavity 650, and the pendulum assembly 400 is free to enter and exit the locking structure 600.

[0101] Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 5 As shown, the locking structure 600 of the present application further includes a second touch switch 660, which is arranged in the first locking cavity 651. The second touch switch is connected in series with the moving device 640. When the pendulum assembly 400 contacts the second touch switch, the moving device 640 drives the second locking cavity 652 and the third locking cavity 653 to move close to the first locking cavity 651, and the pendulum assembly 400 is circumferentially limited in the locking cavity 650.

[0102] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like 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 application. Also, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0103] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0104] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An impact testing machine for measuring the impact resistance of a test piece on which an alignment groove is formed, characterized by, include, Frame; A data reading component, which is mounted on the frame; A pendulum assembly, wherein the pendulum is rotatably connected to the frame; A limiting component is provided with a limiting groove along a first direction and a limiting step along a second direction. A test piece is disposed on the limiting step along the second direction, with one side of the test piece abutting against the limiting step, and the test piece spanning the limiting groove. When the pendulum assembly rotates between itself and the frame, the pendulum assembly simultaneously swings within the limiting groove, thus impacting the test piece. An alignment member, which is movably connected to the limiting assembly, to form an alignment state and an impact state for the alignment member; wherein, In the alignment state, the limiting component is located outside the limiting groove, the alignment member is disposed above the limiting component along the second direction, the alignment member spans the limiting groove, and the alignment member is used to calibrate the position of the test piece; In the impact state, the alignment member is disposed on one side of the limiting groove to avoid affecting the swing of the pendulum assembly within the limiting groove.

2. The impact testing machine of claim 1, wherein, The pendulum assembly includes, A swing arm, the first end of which is rotatably connected to the frame; An impact element, wherein the second end of the swing arm is fixedly connected to the impact element; wherein... When the swing arm rotates between the frame and the test piece, the impact member simultaneously swings within the limiting groove and impacts the test piece.

3. The impact testing machine of claim 1, wherein, The data reading device includes: The dial is engraved with impact data around its circumference; A pointer, which is rotatably connected to the dial, and the pointer is connected in series with the pendulum assembly.

4. The impact testing machine of claim 1, wherein The limiting component includes a first limiting member and a second limiting member spaced apart along the second direction. The first limiting member and the second limiting member extend along the first direction and form a limiting groove located between the first limiting member and the second limiting member.

5. The impact testing machine of claim 4, wherein, The limiting component includes a limiting protrusion, which is disposed on the upper surface of the first limiting member and the second limiting member; the side of the limiting protrusion facing the swing direction of the pendulum assembly is a limiting surface, and the limiting surface together with the upper surface of the first limiting member or the second limiting member forms the limiting step.

6. The impact testing machine of claim 5, wherein, The alignment member is rotatably connected to the first limiting member, and the rotation axis of the alignment member is set along the first direction; the upper surface of the second limiting member is provided with an alignment surface, and the limiting step and the alignment surface are respectively set on both sides of the limiting protrusion; In the alignment state, the alignment member is in contact with the alignment surface, and the alignment member is arranged parallel to the alignment surface.

7. The impact testing machine of claim 6, wherein, It also includes, A locking structure is provided on the swing path of the pendulum assembly, and the locking structure is disposed away from the limiting assembly; wherein, In the aligned state, the pendulum assembly is located within the locking structure to form a circumferential limit on the pendulum assembly.

8. The impact testing machine of claim 7, wherein, It also includes, A first touch switch is arranged on the alignment surface, the first touch switch is in series with the locking structure, and the locking structure can release the circumferential limitation of the pendulum assembly when the alignment assembly is away from the first touch switch.

9. The impact testing machine of claim 7, wherein, The locking structure comprises, A locking body; A first locking claw and a second locking claw are arranged on one side of the locking body, and the first locking claw and the second locking claw are movably connected to the locking body through a moving device; A locking cavity comprises a first locking cavity, a second locking cavity and a third locking cavity, the first locking cavity is arranged on the side of the locking body close to the first locking claw and the second locking claw, the second locking cavity is arranged on the side of the first locking claw close to the second locking claw, and the third locking cavity is arranged on the side of the second locking claw close to the first locking claw; wherein, In the alignment state, the second locking cavity and the third locking cavity move close to the first locking cavity to close the locking cavity, and the pendulum assembly is circumferentially limited in the locking cavity; In the impact state, the second locking cavity and the third locking cavity move away from the first locking cavity to open the locking cavity, and the pendulum assembly is free to enter and exit the locking structure.

10. The impact testing machine of claim 9, wherein, A second touch switch is arranged in the first locking cavity, the second touch switch is in series with the moving device, and the moving device drives the second locking cavity and the third locking cavity to move close to the first locking cavity and circumferentially limits the pendulum assembly in the locking cavity after the pendulum assembly contacts the second touch switch.

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