Impact test equipment

Abstract

The present invention discloses an impact test device, which includes: a test frame, a hoisting mechanism, an impact mechanism and a measuring mechanism. The hoisting mechanism is arranged on the test frame, the impact mechanism is detachably connected to the hoisting mechanism, the measuring mechanism has a support surface, the support surface is located directly below the impact mechanism, the support surface is used to support the test sample, and the measuring mechanism is used to collect test data when the impact mechanism impacts the test sample. The locking mechanism is arranged on the test frame, and the locking mechanism can be switched between a locking state and a release state. In the locked state, the locking mechanism is connected to the impact mechanism, or at least part of the locking mechanism is located at the lower side of the impact mechanism, which is used to limit the downward displacement of the impact mechanism; in the released state, the locking mechanism does not interfere with the impact mechanism. According to the impact test device of the present invention, the critical conditions of the collision damage of the test sample can be analyzed by collecting test data through the measuring mechanism, and the locking mechanism can limit the displacement of the impact mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of testing equipment, in particular to an impact testing device. Background Art

[0002] In the prior art, the impact test device mainly uses the free fall motion of the impact mechanism to impact the test sample to detect the anti-destructive performance of the sample during the impact process. It can only determine whether the test sample is damaged when it is impacted, but cannot directly obtain the dynamic data of the entire impact process, cannot record the entire test process, cannot effectively determine the critical conditions for the damage of the test sample, and the impact test device lacks a structure that can limit the movement of the impact mechanism. Therefore, improvement is needed. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention is to propose an impact test device, which collects test data of the impact mechanism impacting the test sample through a measuring mechanism, so as to analyze the stress of the test sample during the impact process and the critical conditions of the collision damage of the test sample, and the locking mechanism can limit the displacement of the impact mechanism, so as to ensure that the impact mechanism does not fall accidentally when replacing and installing the test sample.

[0004] According to an embodiment of the present invention, the impact test device includes: a test frame; a hoisting mechanism, which is arranged on the test frame; an impact mechanism, which is detachably connected to the hoisting mechanism; a measuring mechanism, which has a supporting surface, which is located directly below the impact mechanism, and the supporting surface is used to support a test specimen, and the measuring mechanism is used to collect test data when the impact mechanism impacts the test specimen; a locking mechanism, which is arranged on the test frame and can be switched between a locked state and a released state. In the locked state, the locking mechanism is connected to the impact mechanism, or at least a part of the locking mechanism is located at the lower side of the impact mechanism to limit the downward displacement of the impact mechanism; in the released state, the locking mechanism does not interfere with the impact mechanism.

[0005] According to the impact test device of the embodiment of the present invention, the test data of the impact mechanism impacting the test sample is collected through the measuring mechanism. The collected data can be used to analyze the stress of the test sample during the impact process, and multiple tests can be performed on a single test sample, so as to analyze the critical conditions of the collision damage of the test sample, which can provide data support for product optimization and improvement. In addition, the locking mechanism can limit the displacement of the impact mechanism, which can ensure that the impact mechanism does not accidentally fall when replacing and installing the test sample.

[0006] According to some embodiments of the present invention, the locking mechanism includes a fixed seat and a limit rod, the fixed seat is fixed on the test frame, the limit rod is arranged on the fixed seat, and the limit rod is movable between an extended position and a retracted position in a horizontal direction relative to the fixed seat, the limit rod is located at the lower side of the impact mechanism when in the extended position, and the limit rod is spaced apart from the impact mechanism in the horizontal plane when in the retracted position.

[0007] According to some embodiments of the present invention, the test frame includes: a support frame, the support frame includes two support frames, the two support frames are arranged at intervals in the horizontal direction, and the locking mechanism is arranged on the support frame; a crossbeam, the crossbeam is connected to the upper ends of the two support frames, and the lifting mechanism is arranged on the crossbeam; and a guide rail, the guide rail includes two guide rails, the two guide rails extend vertically and are respectively arranged on the two support frames, and the impact mechanism is slidably arranged on the two guide rails at both ends in the horizontal direction.

[0008] According to some optional embodiments of the present invention, a limit block is provided at the lower end of the guide rail, and the height of the limit block is lower than the height of the supporting surface.

[0009] In some optional embodiments of the present invention, the limiting block is a rubber block.

[0010] According to some optional embodiments of the present invention, the test frame further includes: a base plate, two support frames are arranged on the base plate at intervals, and the support frames include: a support rod, the support rod extends vertically and has two ends respectively connected to the base plate and the cross beam, a reinforcing rod, the upper end of the reinforcing rod extends obliquely upward toward the support rod, and the upper end of the reinforcing rod extends to be connected to the support rod.

[0011] According to some embodiments of the present invention, the impact testing device further comprises: an acceleration sensor, wherein the acceleration sensor is disposed on the impact mechanism and is used to detect the acceleration of the impact mechanism.

[0012] According to some embodiments of the present invention, the impact testing device further comprises: a control box, wherein the control box is disposed on the test frame, wherein the control box comprises a controller, and the controller is communicatively connected with the hoisting mechanism.

[0013] According to some embodiments of the present invention, the hanging mechanism includes a hook, the impact mechanism includes a suspension part, and the hook is connected to the suspension part by magnetic attraction.

[0014] According to some embodiments of the present invention, the lifting mechanism also includes: a lifting motor, a winch wheel and a steel cable, one end of the steel cable is wound around the winch wheel, the other end of the steel cable is connected to the impact mechanism, and the lifting motor is connected to the winch wheel for driving the winch wheel to rotate to release and reel in the steel cable.

[0015] According to some embodiments of the present invention, the impact mechanism includes: an impact base, on which a suspension portion is provided, and the suspension portion is connected to the hanging mechanism; a fixing plate, which is detachably connected to the impact base; an impact head, which is provided on the fixing plate and is used to impact the test specimen; and a counterweight block, which is provided on the impact base.

[0016] According to some embodiments of the present invention, the measuring mechanism includes: a support plate and a force sensor, the support plate includes two support plates arranged at an interval up and down, the upper surface of the support plate located on the upper side forms the support surface, and the force sensor is arranged between the two support plates.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an impact test device according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic structural diagram of the impact test device from another angle shown in ;

[0020] Figure 3 yes Figure 1 A front view of the impact test apparatus shown in;

[0021] Figure 4 yes Figure 1 A side view of the impact test apparatus shown in;

[0022] Figure 5 yes Figure 1 A schematic diagram of the structure of the guide rail and the locking mechanism shown in ;

[0023] Figure 6 yes Figure 5 A front view of the guide rail and locking mechanism shown in;

[0024] Figure 7 yes Figure 1 The structural schematic diagram of the impact mechanism shown in;

[0025] Figure 8 yes Figure 7A front view of the impact mechanism shown in ;

[0026] Fig. 9 yes Figure 1 The structural diagram of the measuring mechanism shown in ;

[0027] Fig.10 yes Fig. 9 Front view of the measuring mechanism shown in .

[0028] Reference numerals:

[0029] 10. Impact test device;

[0030] 1. Test rack; 11. Support frame; 111. First support frame; 112. Second support frame; 12. Support rod; 13. Reinforcement rod; 14. First connecting plate; 15. Second connecting plate; 16. Crossbeam; 17. Guide rail; 171. First guide rail; 172. Second guide rail; 18. Limit block; 19. Bottom plate;

[0031] 2. Hoisting mechanism; 21. Hook; 22. Control box; 23. Connecting wire; 24. Winch; 25. Protective shell;

[0032] 3. Impact mechanism; 31. Suspension part; 32. Impact base; 33. Fixing plate; 34. Impact head; 35. Counterweight block; 36. Fixing rod; 37. Guide block;

[0033] 4. Measuring mechanism; 41. Support plate; 411. First fixing hole; 42. Support surface; 421. Connection hole; 43. Force sensor; 44. Clamp;

[0034] 5. Locking mechanism; 51. Fixed seat; 52. Limiting rod;

[0035] 6. Test samples. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The impact testing device 10 according to an embodiment of the present invention will be described below with reference to the drawings.

[0038] Reference Figure 1-Figure 4According to an embodiment of the present invention, the impact test device 10 comprises: a test frame 1, a hoisting mechanism 2, an impact mechanism 3, a measuring mechanism 4 and a locking mechanism 5. The hoisting mechanism 2 is arranged on the test frame 1, and the impact mechanism 3 is detachably connected to the hoisting mechanism 2, so as to facilitate the release of the impact mechanism 3. The measuring mechanism 4 has a supporting surface 42, and the supporting surface 42 is located directly below the impact mechanism 3. The supporting surface 42 is used to support the test sample 6, and the measuring mechanism 4 is used to collect test data when the impact mechanism 3 impacts the test sample 6. For example, the test sample 6 can be a component such as a high-voltage wire harness and a battery. The test sample 6 is placed on the supporting surface 42. When the impact mechanism 3 is separated from the hoisting mechanism 2, the test sample 6 can be impacted downward. During the impact process, data can be collected by the measuring mechanism 4. The collected data can be used to analyze the stress condition of the test sample 6 during the impact process, and multiple tests can be performed on a single test sample 6, so that the critical conditions for collision damage of the test sample 6 can be analyzed, which can provide data support for product optimization and improvement.

[0039] Reference Figure 1-Figure 3 , the locking mechanism 5 is arranged on the test frame 1, and the locking mechanism 5 can be switched between a locked state and a released state. When the locking mechanism 5 is in the locked state, the locking mechanism 5 is connected to the impact mechanism 3, and the locking mechanism 5 can limit the displacement of the impact mechanism 3; or, at least part of the locking mechanism 5 is located at the lower side of the impact mechanism 3, and the locking mechanism 5 is used to limit the downward displacement of the impact mechanism 3. When the locking structure is in the released state, the locking mechanism 5 does not interfere with the impact mechanism 3. By setting the locking mechanism 5, it can be ensured that when the test sample 6 is replaced and installed, the impact mechanism 3 is kept from falling accidentally.

[0040] For example, the locking mechanism 5 can be arranged at the upper end of the test frame 1, and the locking mechanism 5 is located on the upper side of the impact mechanism 3. When the locking mechanism 5 is in the locked state, the locking mechanism 5 is connected to the impact mechanism 3; or, the locking mechanism 5 can also be arranged at the left and right ends of the test frame 1. When the locking mechanism 5 is in the locked state, at least part of the locking mechanism 5 is located on the lower side of the impact mechanism 3, and the impact mechanism 3 can abut against at least part of the locking mechanism 5 in the upper and lower directions. When it is necessary to replace the test sample 6, the locking mechanism 5 can be placed in the locked state, and the locking structure can limit the downward displacement of the impact mechanism 3 to prevent the impact mechanism 3 from accidentally falling off the support surface 42 of the impact measurement mechanism 4. When it is necessary to release the impact mechanism 3 to impact the test sample 6 downward, the locking structure can be switched to the released state, and the impact mechanism 3 moves downward. At this time, there is no contact and no interference between the locking mechanism 5 and the impact mechanism 3.

[0041] According to the impact test device 10 of the embodiment of the present invention, by collecting test data of the impact mechanism 3 impacting the test sample 6 in the measuring mechanism 4, the collected data can be used to analyze the force condition of the test sample 6 during the impact process, and multiple tests can be performed on a single test sample 6, so as to analyze the critical conditions of collision damage of the test sample 6, which can provide data support for product optimization and improvement. In addition, the locking mechanism 5 can limit the displacement of the impact mechanism 3, which can ensure that the impact mechanism 3 does not accidentally fall when the test sample 6 is replaced and installed.

[0042] According to some embodiments of the present invention, referring to Figure 1-Figure 3 and Figure 5-Figure 6 The locking mechanism 5 includes a fixed seat 51 and a limiting rod 52. The fixed seat 51 is fixed on the test frame 1. The limiting rod 52 is arranged on the fixed seat 51, and the limiting rod 52 is movable between the extended position and the retracted position relative to the fixed seat 51 in the horizontal direction. When the limiting rod 52 is in the extended position, it is located at the lower side of the impact mechanism 3, which can limit the downward displacement of the impact mechanism 3; when the limiting rod 52 is in the retracted position, it is spaced apart from the impact mechanism 3 in the horizontal plane, and the limiting rod 52 and the impact mechanism 3 have a certain distance in the projection of the horizontal plane. The impact mechanism 3 can move downward and impact the test sample 6 on the support surface 42, and the limiting rod 52 and the impact mechanism 3 do not interfere with each other. The locking mechanism 5 has a simple structure, low manufacturing cost, and is easy to install. For example, the fixed seat 51 can be fixed to the test frame 1 by fasteners.

[0043] According to some embodiments of the present invention, referring to Figure 1-Figure 6 The test frame 1 includes: a support frame 11, a crossbeam 16 and a guide rail 17. The support frames 11 include two, and the two support frames 11 are arranged at intervals in the horizontal direction. The locking mechanism 5 can be arranged on the support frames 11; the crossbeam 16 is connected to the upper ends of the two support frames 11, and the hoisting mechanism 2 is arranged on the crossbeam 16. The guide rail 17 includes two, and the two guide rails 17 extend vertically, and the two guide rails 17 are arranged on the two support frames 11 respectively, and the two ends of the impact mechanism 3 in the horizontal direction are slidably arranged on the two guide rails 17. For example, the guide rail 17 can be a steel guide rail 17.

[0044] For example, refer to Figure 1-Figure 3According to some specific embodiments of the present invention, the support frame 11 includes a first support frame 111 and a second support frame 112. The support frames 11 are spaced apart in the left-right direction, and the first support frame 111 is located on the left side of the second support frame 112. A locking structure is provided on each of the first support frame 111 and the second support frame 112, and the locking structure is fixed to the first support frame 111 and the second support frame 112 by fasteners. A first connecting plate 14 is provided on the upper end of each of the first support frame 111 and the second support frame 112, and the first connecting plate 14 can be welded to the first support frame 111 and the second support frame 112. The crossbeam 16 can be fixed to the connecting plate by fasteners, so that the crossbeam 16 can be connected to the support frame 11. The hoisting mechanism 2 can be installed on the upper surface of the crossbeam 16 by fasteners.

[0045] For example, refer to Figure 5 and Figure 6 The guide rail 17 includes a first guide rail 171 and a second guide rail 172. The first guide rail 171 can be arranged on a side of the first support frame 111 facing the second support frame 112, and the second guide rail 172 can be arranged on a side of the second support frame 112 facing the first support frame 111. The first guide rail 171 can be fixedly connected to the first support frame 111 by a fastener, and the second guide rail 172 can also be fixedly connected to the second support frame 112 by a fastener. The left end of the impact mechanism 3 is slidably arranged on the first guide rail 171, and the right end of the impact mechanism 3 is slidably arranged on the second guide rail 172. The impact mechanism 3 can move up and down along the guide rail 17.

[0046] According to some optional embodiments of the present invention, referring to Figure 1-Figure 6 A stop block 18 is provided at the lower end of the guide rail 17, and the height of the stop block 18 is lower than the height of the support surface 42. The stop block 18 can prevent the impact mechanism 3 from sliding out of the guide rail 17 when it moves downward. For example, a stop block 18 is provided at the lower end of each of the first guide rail 171 and the second guide rail 172, and the stop block 18 is fixed to the guide rail 17.

[0047] Optionally, the limit block 18 can be a rubber block with a certain deformation ability. When the impact mechanism 3 moves downward to impact the test sample 6, the two ends of the impact mechanism 3 can collide with the limit block 18. The deformation of the limit block 18 can absorb some collision energy, thereby buffering the impact mechanism 3.

[0048] According to some optional embodiments of the present invention, referring to Figure 1-Figure 4The test frame 1 further includes: a bottom plate 19, and two support frames 11 are arranged at intervals on the bottom plate 19. The support frame 11 includes: a support rod 12 and a reinforcing rod 13. The support rod 12 extends vertically (for example, in the up and down direction in the figure), and the two ends of the support rod 12 are respectively connected to the bottom plate 19 and the crossbeam 16. The lower end of the reinforcing rod 13 is connected to the bottom plate 19, and the lower end of the reinforcing rod 13 is spaced from the lower end of the support rod 12; the upper end of the reinforcing rod 13 extends obliquely upward toward the support rod 12, and the upper end of the reinforcing rod 13 extends to connect with the support rod 12. By setting the reinforcing rod 13, the structural strength and structural stability of the test frame 1 can be improved; by setting the lower end of the reinforcing rod 13 and the lower end of the support rod 12 at an interval, the upper end of the reinforcing rod 13 is connected to the support rod 12, and the lower end of the support rod 12 and the lower end of the reinforcing rod 13 are both connected to the bottom plate 19, so that the support rod 12, the reinforcing rod 13 and the bottom plate 19 can form a triangular frame, making the structure of the test frame 1 more stable.

[0049] For example, refer to Figure 1-Figure 4 According to some specific embodiments of the present invention, a second connecting plate 15 is respectively provided at the lower end of the first support frame 111 and the second support frame 112, and the second connecting plate 15 can be welded to the lower ends of the first support frame 111 and the second support frame 112, and the second connecting plate 15 can be installed and fixed on the bottom plate 19 by fasteners, so that the lower ends of the first support frame 111 and the second support frame 112 can be connected to the bottom plate 19. The first support frame 111 may include a support rod 12 and two reinforcing rods 13, the support rod 12 extends in the up-down direction, the upper end of the support rod 12 is connected to the cross beam 16, and the lower end of the support rod 12 is connected to the bottom plate 19. One of the reinforcing rods 13 is located at the front side of the support rod 12, and the other reinforcing rod 13 is located at the rear side of the support rod 12, the lower ends of the two reinforcing rods 13 are spaced from the lower end of the support rod 12, and the upper ends of the two reinforcing rods 13 can be welded to the support rod 12. The second support frame 112 is symmetrically arranged with the first support frame 111 , and the structure of the second support frame 112 is similar to that of the first support frame 111 , so it is not described in detail again.

[0050] According to some embodiments of the present invention, the impact test device 10 further includes: an acceleration sensor, which is disposed on the impact mechanism 3 and is used to detect the acceleration of the impact mechanism 3. The acceleration sensor can measure the acceleration of the impact mechanism 3 at the moment of impacting the test sample 6, and can obtain an acceleration curve. By integrating the acceleration, a velocity-time curve can be obtained. By integrating the velocity-time curve, a corresponding displacement-time curve can be obtained, from which the stiffness information of the test sample 6 can be calculated, thereby realizing the stiffness monitoring of the test sample 6. For example, the acceleration sensor can be disposed on the impact mechanism 3 by pasting, and the acceleration sensor can be disposed at the lower end of the impact mechanism 3.

[0051] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The impact test device 10 further includes: a control box 22, which is disposed on the test frame 1, and includes a controller and a power supply, and the controller is communicatively connected with the hanging mechanism 2. For example, the control box 22 is square, and includes a controller and a power supply, and the control box 22 can be fixed to one side of the test frame 1 by a fastener, and the control box 22 and the hanging mechanism 2 can be connected by a connecting line 23, so that the hanging mechanism 2 is electrically connected to the control box 22, and the power supply in the control box 22 can supply power to the hanging mechanism 2. The user can control the hanging mechanism 2 by manually controlling the controller, or can control the hanging mechanism 2 by controlling the controller by a wireless remote controller.

[0052] According to some embodiments of the present invention, referring to Figure 1-Figure 3 and Figure 7-Figure 8 , the hoisting mechanism 2 includes a hook 21, and the impact mechanism 3 includes a suspension part 31, and the hook 21 is connected to the suspension part 31 by magnetic attraction. For example, the hook 21 can be an electromagnetically controlled hook 21, and the hook 21 can be electrically connected to a power source. A coil is provided inside the hook 21, and the material of the suspension part 31 can be a magnetic metal (such as iron, cobalt, nickel, etc.). By energizing the coil to generate magnetic force, the hook 21 can tightly absorb the suspension part 31, and the impact mechanism 3 will not fall. When the coil is powered off, the magnetic force of the coil disappears to achieve demagnetization, so that the adsorbed suspension part 31 is separated from the hook 21, and the impact mechanism 3 moves downward under the action of gravity.

[0053] For example, according to a specific embodiment of the present invention, the hook 21 may also be a spring hook 21, and the suspension portion 31 may have a ring, and the hook 21 may be buckled with the ring to connect the hook 21 with the suspension portion 31, so as to ensure that the impact mechanism 3 does not fall. A safety rope may be used to pull the hook 21 from a distance to separate the ring, so as to achieve the falling of the impact mechanism 3.

[0054] According to some embodiments of the present invention, referring to Figure 1-Figure 3The hoisting mechanism 2 also includes: a hoisting motor, a winch wheel 24 and a steel cable. One end of the steel cable is wound on the winch wheel 24, and the other end of the steel cable is connected to the impact mechanism 3. The hoisting motor is connected to the winch wheel 24. The hoisting motor is used to drive the winch wheel 24 to rotate to release and reel in the steel cable. The structure is simple and easy to operate. When the winch wheel 24 rotates to release the steel cable, the impact mechanism 3 can be moved downward. When the winch wheel 24 rotates to reel in the steel cable, the impact mechanism 3 can be driven to move upward. By controlling the winch wheel 24 to rotate to release and reel in the steel cable, the up and down movement of the impact mechanism 3 can be controlled, so that the impact mechanism 3 can reach the target release height. Different release heights of the impact mechanism 3 can bring different sizes of impact force to the test sample 6. For example, the hoisting motor and the winch wheel 24 are both located in a protective shell 25. The protective shell 25 can prevent dust from falling on the hoisting motor and the winch wheel 24, and can ensure the service life of the hoisting motor and the winch wheel 24.

[0055] According to some embodiments of the present invention, referring to Figure 7 and Figure 8 The impact mechanism 3 includes: an impact base 32, a fixed plate 33, an impact head 34 and a counterweight 35. The impact base 32 is provided with a suspension part 31, and the suspension part 31 is connected to the hanging mechanism 2; the fixed plate 33 is detachably connected to the impact base 32, the impact head 34 is arranged on the fixed plate 33, the impact head 34 is used to impact the test sample 6, and the counterweight 35 is arranged on the impact base 32. The fixed plate 33 is detachably connected to the impact base 32, and the impact head 34 is arranged on the fixed plate 33. Therefore, the impact head 34 and the impact base 32 can also be detachably connected, so that the impact head 34 and the fixed plate 33 can be easily replaced, and different impact heads 34 and fixed plates 33 can be replaced according to different test samples 6. For example, the fixing plate 33 can be fixed to the lower surface of the impact base 32 by fasteners, and the impact head 34 and the fixing plate 33 can also be connected by fasteners; the lifting mechanism 2 has a hook 21, and the impact mechanism 3 can be connected to the lifting mechanism 2 by connecting the suspension part 31 to the hook 21 of the lifting mechanism 2.

[0056] Optionally, refer to Figure 7 and Figure 8 The impact mechanism 3 may further include guide blocks 37 and a fixing rod 36. The guide blocks 37 are disposed on both sides of the impact base 32, and the guide blocks 37 can slidably cooperate with the guide rail 17, and can drive the impact mechanism 3 to slide up and down along the guide rail 17. The fixing rod 36 is disposed on the upper surface of the impact base 32, and the fixing rod 36 can limit the counterweight block 35, and the fixing rod 36 cooperates with the fastener to fix the counterweight block 35. For example, the impact mechanism 3 includes two guide blocks 37, one of which is disposed on the left side of the impact base 32, and the other guide block 37 is disposed on the right side of the impact base 32. The guide blocks 37 can be installed and fixed to the impact base 32 by fasteners. For example, referring to Figure 3 There are three fixing rods 36, and the suspension part 31 is located at the upper end of the middle fixing rod 36. The suspension part 31 and the middle fixing rod 36 can be an integrally formed part, so that the overall stability is higher; the suspension part 31 and the middle fixing rod 36 can also be detachably connected to facilitate the replacement of the suspension part 31.

[0057] According to some embodiments of the present invention, referring to Fig. 9 and Fig.10 The measuring mechanism 4 includes: a support plate 41 and a force sensor 43. The support plate 41 includes two support plates 41 arranged at intervals in the upper and lower parts. The upper surface of the support plate 41 located on the upper side is formed as a support surface 42. The force sensor 43 is arranged between the two support plates 41. The force sensor 43 can complete the collection of impact force through the cooperation of the upper and lower support plates 41. For example, the support surface 42 has a clamp 44 for fixing the test sample, and different clamps 44 can be replaced according to different test samples; the support surface 42 is formed with a plurality of (for example, four) connection holes 421, and fasteners can be inserted through the connection holes 421 to connect the support plate 41 located on the upper side with the force sensor 43, and the force sensor 43 is fixedly connected to the support plate 41 on the lower side by fasteners. A plurality of (for example, four) first fixing holes 411 are formed on the support plate 41 located on the lower side, and a plurality of second fixing holes can be formed on the base plate 19. The number of the second fixing holes is the same as the number of the first fixing holes 411 and corresponds one to one. Fasteners can be passed through the first fixing holes 411 and the second fixing holes from top to bottom to fix the support plate 41 located on the lower side to the base plate 19, so that the entire measuring mechanism 4 is located on the upper surface of the base plate 19.

[0058] When the impact test device 10 is used to perform an impact test on the test sample 6, the weight of the counterweight block 35 of the impact mechanism 3 and the height of the impact mechanism 3 can be preset first, and then the motor can be controlled by the control box 22. The motor can drive the winch wheel 24 to rotate to release the steel cable and reel in the steel cable. The steel cable can drive the impact mechanism 3 to reach the preset height, and then the locking mechanism 5 is switched to the release state. Finally, the impact mechanism 3 is released by the cooperation of the hook 21 and the suspension part 31. The impact mechanism 3 cooperates with the guide block 37 and the guide rail 17 to freely fall and impact the test sample 6 on the support surface 42. The entire impact process collects and saves data through the acceleration sensor and the force sensor 43 for post-test data analysis, and the expected effect can be achieved through repeated tests, so that the critical conditions for collision damage of the test sample 6 can be analyzed, which can provide data support for product optimization and improvement.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An impact test device, characterized in that: include: A test frame, the test frame comprising: a support frame, a crossbeam and a guide rail, the support frame comprising two, the two support frames being arranged at intervals in the horizontal direction, the crossbeam being connected to the upper ends of the two support frames, the guide rail comprising two, the two guide rails extending vertically and being arranged on the two support frames respectively; A hoisting mechanism, wherein the hoisting mechanism is arranged on the test frame; An impact mechanism, the impact mechanism being detachably connected to the lifting mechanism; A measuring mechanism, wherein the measuring mechanism has a supporting surface, the supporting surface is located directly below the impact mechanism, the supporting surface is used to support the test sample, and the measuring mechanism is used to collect test data when the impact mechanism impacts the test sample; A locking mechanism, the locking mechanism is arranged on the test frame, the locking mechanism can be switched between a locking state and a released state, in which the locking mechanism is connected to the impact mechanism, or at least a part of the locking mechanism is located at the lower side of the impact mechanism, so as to limit the downward displacement of the impact mechanism; in the released state, the locking mechanism does not interfere with the impact mechanism; An acceleration sensor, the acceleration sensor is arranged on the impact mechanism and is used to detect the acceleration of the impact mechanism; Among them, the locking mechanism is arranged on the support frame, the lifting mechanism is arranged on the crossbeam, the impact mechanism is located between the two guide rails in the horizontal direction and the two ends of the impact mechanism are slidably arranged on the two guide rails, and the test frame also includes: a bottom plate, two support frames are arranged on the bottom plate at intervals, the lower ends of the two guide rails are lower than the supporting surface and higher than the bottom plate, and a limit block is provided at the lower end of the guide rail, the height of the limit block is lower than the height of the supporting surface, and the limit block is a rubber block.

2. The impact test device according to claim 1, characterized in that: The locking mechanism includes a fixed seat and a limit rod, the fixed seat is fixed on the test frame, the limit rod is arranged on the fixed seat, and the limit rod is movable between an extended position and a retracted position in a horizontal direction relative to the fixed seat, the limit rod is located at the lower side of the impact mechanism when in the extended position, and the limit rod is spaced apart from the impact mechanism in the horizontal plane when in the retracted position.

3. The impact test device according to claim 1, characterized in that: The support frame comprises: A support rod, the support rod extends vertically and has two ends connected to the bottom plate and the cross beam respectively, A reinforcing rod, the lower end of which is connected to the bottom plate and spaced apart from the lower end of the supporting rod, the upper end of which extends obliquely upward toward the supporting rod, and the upper end of which extends to be connected to the supporting rod.

4. The impact test device according to any one of claims 1 to 3, characterized in that: Also includes: A control box is arranged on the test frame, and the control box includes a controller, and the controller is communicatively connected with the hoisting mechanism.

5. The impact test device according to any one of claims 1 to 3, characterized in that: The hanging mechanism comprises a hook, and the impact mechanism comprises a suspension part, and the hook is connected with the suspension part through magnetic attraction.

6. The impact test device according to any one of claims 1 to 3, characterized in that: The hoisting mechanism also includes: a hoisting motor, a winch wheel and a steel cable, one end of the steel cable is wound around the winch wheel, the other end of the steel cable is connected to the impact mechanism, and the hoisting motor is connected to the winch wheel to drive the winch wheel to rotate to release and reel in the steel cable.

7. The impact test device according to any one of claims 1 to 3, characterized in that: The impact mechanism comprises: An impact base, wherein a suspension portion is provided on the impact base, and the suspension portion is connected to the hanging mechanism; A fixing plate, the fixing plate being detachably connected to the impact base; An impact head, the impact head is arranged on the fixing plate, and the impact head is used to impact the test sample; A counterweight block is arranged on the impact base.

8. The impact test device according to claim 1, characterized in that: The measuring mechanism comprises: a support plate and a force sensor. The support plate comprises two support plates spaced apart from each other. The upper surface of the support plate located on the upper side forms the support surface. The force sensor is arranged between the two support plates.

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