A rebound value impact energy reproduction device for a rebound hammer

Abstract

The present invention relates to a device for reproducing the impact energy of the rebound value of a rebound tester, comprising a device base, a first movable bracket and a second movable bracket are installed on the device base for guiding and moving along the left-right direction, a Newton's pendulum is arranged on the first movable bracket, and a force transmission rod with a rotation axis extending along the up-down direction is also rotatably installed on the first movable bracket, an impact ball is arranged at one end of the force transmission rod, and a force transmission rod fork arm is arranged at the other end of the force transmission rod, a rebound tester support for moving left-right with the rebound tester is arranged on the second movable bracket, a standard steel anvil for being impacted by the impact rod is arranged on the right side of the second movable bracket on the device base, a synchronous transmission rod is arranged between the second movable bracket and the first movable bracket, and when the second movable bracket moves rightward with the rebound tester until the impact hammer and the hook fall off, the locking twist push rod pushes the locking twist and is moved away from the locking twist stop edge. The present invention provides a device for reproducing the impact energy of the rebound value of a rebound tester that can intuitively display the rebound energy of the impact hammer.

Description

Technical Field

[0001] The invention relates to the field of calibration and verification of a rebound hammer, and in particular to a rebound value impact energy reproduction device of a rebound hammer. Background Art

[0002] The rebound tester, commonly known as the concrete rebound tester, is a testing device used to test the compressive strength of concrete. Its structure is as follows Figure 8 As shown, it includes a rebound tester housing 2, the front end of which is guided and movable by a rebound rod 1, and the rebound tester housing is also equipped with a rebound hammer, a rebound hammer spring and a hook for hooking the rebound hammer, and the rebound hammer spring is a tension spring. A rebound tester pointer 3 is guided and movable along the front and rear directions on the rebound tester housing, and a transparent pointer guard plate 4 is fixed to the outside of the rebound tester pointer by screws, and the pointer guard plate is provided with scale values ​​corresponding to the rebound tester pointer.

[0003] When using it for the first time, press the impact rod against the surface of the concrete, and then gently press the rebound tester shell to release the button. When the pressure is released, the impact rod extends and the hook hooks the impact hammer. Then, keep the axis of the impact rod and the rebound tester shell perpendicular to the surface of the concrete and press slowly and evenly. During the pressing process, the impact hammer spring gradually stores energy. When the pressing limit is reached, the impact hammer and the hook fall off, and the impact hammer spring releases energy. Under the action of the impact hammer spring, the impact hammer hits the rear end of the impact rod, and the front end of the impact rod hits the concrete. The impact hammer rebounds and drags the rebound tester pointer backward to a certain scale value. The scale corresponds to the rebound value of the rebound tester. The rebound value refers to the ratio of the rebound distance to the distance between the impact hammer and the impact rod before the impact. It is calculated as a percentage as one of the indicators related to the compressive strength of concrete to infer the compressive strength of concrete.

[0004] The basic principle is that the harder the concrete is, that is, the stronger its compressive strength is, the less energy the concrete absorbs when the impact rod hits the concrete, and the greater the rebound displacement after the impact hammer hits the impact rod; the softer the concrete is, that is, the weaker its compressive strength is, the more energy the concrete absorbs when the impact rod hits the concrete, and the smaller the rebound displacement after the impact hammer hits the impact rod. It can be seen that the spring of the rebound hammer is the key to determining whether the rebound hammer measurement is accurate. According to the corresponding verification specifications, the rebound hammer needs to be calibrated regularly. The essence of the rebound hammer calibration is to calibrate the elastic coefficient of the rebound hammer spring. In the prior art, when calibrating the rebound hammer, the usual practice is to let the rebound hammer impact a standard steel anvil. Because the hardness of the standard steel anvil is certain, the energy absorbed by the standard steel anvil after the rebound hammer's impact rod impacts the standard steel anvil is certain. If the rebound hammer is qualified, its impact hammer should rebound to the corresponding scale value position with the rebound hammer pointer. However, in the prior art, the scale value corresponds to the ratio of the rebound distance to the distance between the rebound hammer and the impact rod before the impact. First of all, this scale value is a percentage and cannot intuitively display the impact energy of the rebound. Summary of the invention

[0005] The object of the present invention is to provide a rebound value impact energy reproduction device of a rebound hammer which can intuitively display the rebound energy of a spring hammer.

[0006] In order to solve the above technical problems, the technical solution of a rebound value impact energy reproduction device of a rebound hammer in the present invention is as follows:

[0007] A device for reproducing the impact energy of the rebound value of a rebound tester comprises a device base, a first movable bracket and a second movable bracket are installed on the device base along the left-right direction, the first movable bracket is located in front of the second movable bracket, a Newton's pendulum is arranged on the first movable bracket, and the Newton's pendulum comprises at least two pendulum balls arranged in sequence along the left-right direction, the first movable bracket is also rotatably equipped with a force transmission rod with a rotation axis extending along the up-down direction, one end of the force transmission rod is provided with an impact ball, and the other end of the force transmission rod is provided with a force transmission rod fork arm for forking the left and right sides of the rebound tester pointer, the second movable bracket is provided with a rebound tester support for moving the rebound tester left and right, the device base is also provided with a driving mechanism for driving the second movable bracket to move left and right, a standard steel anvil for being impacted by the impact rod is provided on the right side of the second movable bracket on the device base, the second movable bracket, A synchronous transmission rod is arranged between the first movable bracket, the synchronous transmission rod is guided and moved along the front and rear directions and assembled on the second movable bracket, a transmission rod reset spring is arranged between the second movable bracket and the synchronous transmission rod for applying a backward force to the synchronous transmission rod, a transmission hole is arranged at the rear end of the first movable bracket for the front end of the synchronous transmission rod to be adapted and inserted, a locking twist is arranged on the synchronous transmission rod for guiding and moving along the left and right directions, a locking twist reset spring is arranged between the locking twist and the synchronous transmission rod for applying a rightward force to the locking twist, a locking twist push rod is arranged on the right side of the synchronous transmission rod on the base of the device, and a locking twist stop edge is arranged on the second movable bracket for cooperating with the rear end stop of the locking twist so that the front end of the synchronous transmission rod is located in the transmission hole, when the second movable bracket carries the rebound instrument and moves to the right until the impact hammer and the hook fall off, the locking twist push rod pushes the locking twist and moves away from the locking twist stop edge.

[0008] Furthermore, the Newton's cradle also includes a height detection device for detecting the upper swing height of the rightmost swing ball.

[0009] Furthermore, the impact ball and each pendulum ball have the same mass as the rebound hammer of the rebound tester.

[0010] Furthermore, the Newton's cradle also includes a Newton's cradle crossbar, and each pendulum ball is connected to the Newton's cradle crossbar via a pull rope or a pull rod.

[0011] Furthermore, the impact ball is rotatably assembled on the transmission rod, and the rotation axis of the impact ball is coaxially arranged with the axis of the transmission rod. The first movable bracket includes a bracket bottom plate and a boss fixed on the bracket bottom plate. The bottom of the impact ball is in contact and rolling cooperation with the boss, and the bottom of the swing ball is spaced apart from the bracket bottom plate.

[0012] Furthermore, the second movable bracket is provided with a rebound tester positioning groove with an axis extending in the left-right direction and adapted to the outer peripheral curvature of the rebound tester. The second movable bracket is provided with a rebound tester baffle plate on the left side of the rebound tester positioning groove for stopping the left end of the rebound tester.

[0013] The beneficial effects of the present invention are as follows: when the present invention is in use, the rebounding instrument whose impact rod has been ejected is placed on the second movable bracket, and the pointer guard plate outside the rebounding instrument pointer of the rebounding instrument is removed, and the force transmission rod fork arm at one end of the force transmission rod is forked on the left and right sides of the rebounding instrument pointer, and the impact ball contacts the leftmost swing ball, and the front end of the synchronous transmission rod penetrates into the transmission hole of the first movable bracket, and the positioning of the synchronous transmission rod is achieved through the cooperation of the lock twist and the lock twist stop edge. In this process, the transmission rod reset spring stores energy, and after the preparation work is completed, the driving mechanism drives the second movable bracket to move to the right. While the second movable bracket moves the rebounding instrument to the right, the synchronous transmission rod also moves to the right synchronously with the first movable bracket, and the right end of the impact rod is pressed on the standard steel anvil. The rightward movement of the rebounding instrument shell simulates the pressing of the rebounding instrument shell during actual use. As the pressing continues, the inside of the rebounding instrument is The spring of the spring hammer gradually stores energy. When the spring of the spring hammer reaches the energy storage limit, the locking torsion push rod pushes the locking torsion to move to the left and is moved away from the locking torsion stop edge. Under the action of the reset spring of the transmission rod, the transmission rod quickly moves backward, and the front end of the transmission rod disengages from the transmission hole. At this time, the second movable bracket and the first movable bracket no longer move synchronously. At the same time, the spring hammer of the rebound instrument falls off from the hook, and the spring hammer releases energy. The spring hammer moves to the right and hits the spring rod. The spring rod hits the standard steel anvil, and the spring hammer rebounds. The rebound energy of the spring hammer is transmitted to the pointer of the rebound instrument. The kinetic energy of the pointer of the rebound instrument is transmitted to the impact ball through the transfer rod. The impact ball hits the pendulum ball, and the pendulum ball on the far right swings to the right. The potential energy corresponding to the maximum height of the rightward swing of the pendulum on the far right is the impact energy reproduction of the rebound value of the rebound instrument. The rebound impact energy of the rebound instrument can be intuitively seen, which is convenient for judging whether the rebound instrument is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the coordination between the first movable bracket and the Newton's cradle;

[0017] Figure 3 yes Figure 1 Schematic diagram of the cooperation between the second movable bracket and the rebound hammer;

[0018] Figure 4 yes Figure 1 A in the enlarged view;

[0019] Figure 5 It is a schematic diagram of the state after the impact hammer of the present invention hits the impact rod;

[0020] Figure 6 yes Figure 5 A schematic diagram of the structure of the first mobile bracket;

[0021] Figure 7 yes Figure 5 The enlarged view of point B in the figure;

[0022] Figure 8 It is a structural schematic diagram of a rebound hammer in the background technology of the present invention;

[0023] Explanation of the reference numerals in the accompanying drawings: 1. impact rod; 2. rebound tester housing; 3. rebound tester pointer; 4. pointer guard plate; 5. device base; 6. first movable bracket; 7. second movable bracket; 8. impact ball; 9. first pendulum ball; 10. second pendulum ball; 11. Newton pendulum beam; 12. force transmission rod; 13. locking torsion top rod; 14. standard steel anvil; 15. rebound tester; 16. force transmission rod fork arm; 17. boss; 18. bracket bottom plate; 19. first guide rail; 20. transmission hole; 21. second guide rail; 22. rack; 23. rebound tester baffle; 24. rebound tester positioning groove; 25. synchronous transmission rod; 26. dial plate; 27. locking torsion; 28. locking torsion reset spring; 29. ​​locking torsion stop edge; 30. transmission rod reset spring; 31. gear; 32. pull rope. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] An embodiment of a device for reproducing the impact energy of a rebound value of a rebound hammer in the present invention is as follows: Figures 1 to 8 As shown:

[0027] The device comprises a device base 5, on which a first movable bracket 6 and a second movable bracket 7 are mounted for guiding movement in the left-right direction, and the first movable bracket is arranged in parallel at the front side of the second movable bracket.

[0028] A Newton pendulum is arranged on the first movable bracket, specifically, the first movable bracket comprises a bracket bottom plate 18 and a boss 17 fixed on the bracket bottom plate, a Newton pendulum cross beam 11 is fixed on the right side of the bracket bottom plate through a vertical rod, and the Newton pendulum comprises two pendulum balls arranged in sequence along the left and right directions, and the pendulum balls are defined as a first pendulum ball 9 and a second pendulum ball 10 from left to right, and each pendulum ball is connected to the Newton pendulum cross beam 11 through a pull rope 32 (or a pull rod). Each pendulum ball is arranged at a distance from the upper plate surface of the bracket bottom plate 18.

[0029] The first movable bracket 6 is also rotatably equipped with a force transmission rod 12 whose rotation axis extends in the up-down direction. The front end of the force transmission rod 12 is rotatably equipped with an impact ball 8. The rotation axis of the impact ball 8 is coaxially arranged with the axis of the force transmission rod 12. The rear end of the force transmission rod 12 is provided with a force transmission rod fork arm 16 for forking on the left and right sides of the rebounding hammer pointer. The bottom of the impact ball 8 is in contact and rolling cooperation with the boss table surface. The weight of the impact ball and each pendulum ball is the same as the weight of the rebounding hammer, and the distance between the center of mass of the rebounding hammer and the rotation axis of the force transmission rod is the same as the distance between the center of mass of the impact ball and the rotation axis of the force transmission rod.

[0030] A first guide rail 19 extending in the left-right direction is fixed to the bottom of the bracket base plate. The first guide rail is a dovetail guide rail. A first guide rail groove adapted to the first guide rail is opened on the device base. The guided movement cooperation between the first guide rail and the first guide rail groove is realized to realize the guided movement cooperation between the first movable bracket and the device base.

[0031] In this embodiment, the Newton pendulum also includes a height detection device for detecting the upper swing height of the second pendulum ball 10. The height detection device includes an encoder. The upper end of a pull rope connected to the second pendulum ball is fixed on a rotating shaft. The rotating shaft rotates with the Newton pendulum crossbeam. The encoder is used to detect the rotation angle of the rotating shaft. When the second pendulum ball swings to the right, the pull rope rotates with the rotating shaft. The encoder measures the rotation angle of the rotating shaft. The upper swing height of the second pendulum ball can be obtained according to the length of the pull rope.

[0032] A rebound tester support is provided on the second movable bracket, and a driving mechanism for driving the second movable bracket to move left and right is also provided on the device base. A standard steel anvil 14 for being hit by the right end of the impact rod is fixed on the right side of the second movable bracket on the device base. The standard steel anvil refers to a steel anvil with a known and determined hardness, which belongs to the prior art.

[0033] A synchronous transmission rod 25 is provided between the second movable bracket and the first movable bracket. The synchronous transmission rod 25 is guided and moved along the front-back direction and assembled on the second movable bracket 7. A transmission rod reset spring 30 for applying a force in the backward direction to the synchronous transmission rod is provided between the second movable bracket 7 and the synchronous transmission rod 25. A transmission hole 20 for the front end of the synchronous transmission rod to be inserted is provided at the rear end of the first movable bracket. A locking torsion 27 is guided and moved along the left-right direction on the synchronous transmission rod. A locking torsion reset spring 28 for applying a force in the right direction to the locking torsion is provided between the locking torsion 27 and the synchronous transmission rod. The locking torsion reset spring is a compression spring. A locking torsion push rod 13 is fixedly provided on the right side of the synchronous transmission rod on the base of the device. A locking torsion stop edge 29 is provided on the second movable bracket 7 for cooperating with the rear end stop of the locking torsion so that the front end of the synchronous transmission rod is located in the transmission hole. When the second movable bracket carries the rebound tester and moves to the right until the spring hammer and the hook fall off, the locking torsion push rod pushes the locking torsion and moves away from the locking torsion stop edge.

[0034] In this embodiment, a rebound hammer positioning groove 24 with an axis extending in the left-right direction and adapted to the outer circumference curvature of the rebound hammer is provided on the rebound hammer support, and a rebound hammer baffle 23 for stopping the left end of the rebound hammer is provided on the second movable bracket on the left side of the rebound hammer positioning groove.

[0035] A second guide rail 21 extending in the left-right direction is fixed to the bottom of the rebound tester support. The second guide rail 21 is a dovetail guide rail. A second guide rail groove extending in the left-right direction is provided on the device base. The guided movement cooperation between the second guide rail and the second guide rail groove is realized to realize the guided movement cooperation between the second movable bracket and the device base.

[0036] A rack 22 arranged in the left-right direction is fixed to the bottom of the second guide rail. The driving mechanism includes a servo motor and a gear 31 connected to the servo motor and having an axis extending in the front-to-back direction. The gear 31 is located at the lower side of the rack 22 and meshes with the rack for transmission.

[0037] In this embodiment, the transmission rod reset spring 30 is a tension spring, which is arranged between the rear end of the transmission rod and the second movable bracket, that is, the front end of the tension spring is fixedly connected to the rear end of the transmission rod, and the rear end of the tension spring is fixedly connected to the second movable bracket. A paddle 26 is fixed on the left side of the transmission rod, and the paddle 26 is convenient for the operator to hold and apply force. The operator can pull the transmission rod forward by holding the paddle.

[0038] The front end of the locking twist is provided with a locking twist guiding inclined surface.

[0039] When in use, the operator holds the dial plate 26 and pulls the synchronous transmission rod 25 forward. When the lock torque 27 passes the lock torque stop edge 29, the energy storage of the transmission rod reset spring ends, and the front end of the transmission rod extends into the transmission hole. At this time, when the second movable bracket moves to the right, the first movable bracket can be moved to the right synchronously through the transmission rod.

[0040] The use process of the present invention is as follows: the rebound hammer with the impact rod extended is horizontally placed on the second movable bracket, when the impact rod is extended, the impact hammer of the rebound hammer is in a hanging connection state with the hook; the pointer guard plate of the rebound hammer is removed, the force transmission rod fork arm at the rear end of the force transmission rod is forked on the left and right sides of the rebound hammer pointer, and the front end of the transmission rod is extended into the transmission hole, and the preparation work is completed.

[0041] Then the driving mechanism drives the second mobile bracket to move right with the rebound tester shell, and the first mobile bracket moves right synchronously. The right end of the rebound tester's impact rod is pressed on the standard steel anvil, and the rebound tester shell is pressed to the right relative to the impact rod. The impact hammer spring in the rebound tester gradually stores energy. When the limit value of pressing is reached, the lock torsion push rod pushes the lock torsion to move to the left. The synchronous transmission rod moves backward rapidly under the action of the transmission rod reset spring, and the front end of the synchronous transmission rod extends out of the transmission hole, releasing the synchronization relationship between the first mobile bracket and the second mobile bracket. At the same time, the impact hammer is disengaged from the hook, and the impact hammer spring releases energy. The impact hammer hits the left end of the impact rod, and the impact rod hits the standard steel anvil. The energy of the rebound of the impact hammer passes through the rebound tester pointer and the transmission rod. The force rod is transmitted to the impact ball and then to the first pendulum ball. Using the principle of Newton's pendulum, the rebound energy of the impact hammer will be manifested by the second pendulum ball without loss. Then the driving mechanism can move to the left with the rebound instrument through the second movable bracket. When the second movable bracket moves to the left, in the initial stage, the force transmission rod will move to the right with the impact ball, but at this time the second pendulum ball has been swung up, or the second pendulum ball has fallen back, and the highest position of the second pendulum ball has been measured. Therefore, even if the impact ball moves to the right, it will not affect the reproduction of the impact energy of the impact hammer. As the second movable bracket continues to move to the left, the fork arm of the force transmission rod will disengage from the pointer of the rebound instrument, and the second movable bracket can move to the state where the impact rod is extended.

[0042] Since the energy storage stroke of each model of the rebound tester is fixed, it is easy to set that when the energy storage is finished, the lock twisting push rod just pushes the lock twisting back. In other embodiments of the present invention: the number of the swing balls can also be one, three or other numbers.

[0043] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0044] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0045] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for reproducing the impact energy of a rebound value of a rebound hammer, characterized in that: The invention comprises a device base, on which a first movable bracket and a second movable bracket are installed along the left-right direction for guiding movement, the first movable bracket is located at the front side of the second movable bracket, a Newton's pendulum is arranged on the first movable bracket, and the Newton's pendulum comprises at least two pendulum balls arranged in sequence along the left-right direction, the first movable bracket is also rotatably equipped with a force transmission rod extending along the up-down direction of the rotation axis, one end of the force transmission rod is provided with an impact ball, and the other end of the force transmission rod is provided with a force transmission rod fork arm for forking the left and right sides of the rebound instrument pointer, the second movable bracket is provided with a rebound instrument support for moving the rebound instrument left-right, the device base is also provided with a driving mechanism for driving the second movable bracket to move left-right, a standard steel anvil for being impacted by the impact rod is provided on the right side of the second movable bracket on the device base, a synchronous transmission rod is provided between the second movable bracket and the first movable bracket, the synchronous transmission rod is installed on the second movable bracket for guiding movement along the front-back direction, a transmission rod reset spring for applying a backward force to the synchronous transmission rod is provided between the second movable bracket and the synchronous transmission rod, and the first movable bracket A transmission hole is provided at the rear end of the frame for the front end of the synchronous transmission rod to be adapted and inserted, and a locking twist is installed on the synchronous transmission rod along the left and right directions to guide movement, and a locking twist reset spring is provided between the locking twist and the synchronous transmission rod to apply a rightward force to the locking twist. A locking twist push rod is provided on the right side of the synchronous transmission rod on the base of the device, and a locking twist stop edge is provided on the second movable bracket for cooperating with the rear end stop of the locking twist so that the front end of the synchronous transmission rod is located in the transmission hole. When the second movable bracket carries the rebound instrument and moves to the right until the rebound hammer and the hook fall off, the locking twist push rod pushes The locking twist is moved away by the locking twist stop, and the impact ball is rotatably assembled on the transmission rod. The rotation axis of the impact ball is coaxially arranged with the axis of the transmission rod. The first movable bracket includes a bracket bottom plate and a boss fixed on the bracket bottom plate. The bottom of the impact ball is in contact and rolling cooperation with the boss, and the bottom of the swing ball is spaced apart from the bracket bottom plate. The second movable bracket is provided with a rebound tester positioning groove with an axis extending in the left and right directions and adapted to the outer peripheral curvature of the rebound tester. The second movable bracket is provided with a rebound tester baffle plate on the left side of the rebound tester positioning groove for stopping the left end of the rebound tester.

2. The device for reproducing the rebound value impact energy of a rebound hammer according to claim 1, characterized in that: The Newton's cradle also includes a height detection device for detecting the upper swing height of the rightmost swing ball.

3. The device for reproducing the impact energy of the rebound value of the rebound hammer according to claim 1, characterized in that: The impact ball and each pendulum ball have the same mass as the rebound hammer of the rebound tester.

4. The device for reproducing the impact energy of the rebound value of the rebound hammer according to claim 1, characterized in that: The Newton cradle also includes a Newton cradle crossbar, and each pendulum ball is connected to the Newton cradle crossbar via a pull rope or a pull rod.

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