Mechanical shock testing device

Abstract

The utility model discloses a mechanical shock testing device, which relates to mechanical shock testing and comprises a frame body, a placement box is fixedly arranged at the top of the frame body, a take-up roller is rotatably arranged in the placement box, a first pull rope is wound on the take-up roller, one end of the take-up roller is fixedly connected with the first pull rope, and the other end of the take-up roller is fixedly connected with the second pull rope. The other end of the first pull rope is fixedly connected with a metal ball, a rotating disc is movably arranged in the frame body, a driving assembly and a limiting assembly are fixedly arranged on one side of the containing box, and the driving assembly is connected with the take-up roller. According to the utility model, the first motor is started, the driving end of the first motor drives the take-up roller to rotate so that the first motor is closed when the metal ball reaches the to-be-tested height, and because the pawl abuts against one grid of the ratchet wheel, when the first motor stops and the driving end of the first motor is rotated anticlockwise due to inertia, the pawl and the ratchet wheel are clamped and cannot rotate; therefore, the problem of reverse rotation of the driving end of the first motor in the stop state of the first motor is prevented.

Description

Technical Field

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

[0002] Mechanical shock testing simulates the impacts a product may experience during transportation and use to assess its ability to withstand these shocks. This testing method uses equipment to replicate the drops and impacts a sample may experience during transportation and use, assessing or evaluating the sample's ability to withstand these shocks. Mechanical shock testing allows manufacturers to identify weaknesses in product design and improve product reliability and safety. This is crucial for ensuring overall product quality and performance, hence the development of mechanical shock testing equipment.

[0003] Existing mechanical impact testing devices usually use a rope looped on a take-up rod with one end of the rope fixedly connected to a heavy object to hit one side of the object to be tested in order to detect the maximum impact threshold that the object to be tested can withstand. Although the impact test can be performed well, when the driving end stops reeling in and releasing the rope, the driving end will rotate due to inertia, which will have a certain impact on the data generated during the impact.

[0004] To this end, we designed a mechanical impact testing device to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a mechanical shock testing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides a mechanical impact testing device, which includes a frame, a placement box is fixedly provided on the top of the frame, a wire take-up rod is rotatably provided in the placement box, the wire take-up rod is wound around a first pull rope and one end is fixedly connected to the first pull rope, the other end of the first pull rope is fixedly connected to a metal ball, a rotating disk is movably provided in the frame, a driving assembly and a limiting assembly are fixedly provided on one side of the placement box, the driving assembly is connected to the wire take-up rod, the driving assembly includes a first motor, the first motor is fixedly installed on the placement box and the driving end is rotatably connected to one side of the wire take-up rod, a connecting member is also fixedly provided on one side of the placement box, the driving end of the first motor is rotatably inserted in the connecting member, the limiting assembly includes a ratchet, the ratchet is fixedly sleeved on the driving end of the first motor, a rotating shaft is fixedly installed in the connecting member, a pawl is rotatably sleeved on the rotating shaft, the pawl is abutted against the ratchet, and a first spring is movably provided in the connecting member, and the other end of the first spring is fixedly connected to the pawl.

[0007] Furthermore, a mounting seat is fixedly provided on the top of the pawl, a pull rod is rotatably sleeved in the mounting seat, and the other end of the pull rod slides through the connecting piece. The setting of the pull rod can better pull the pawl to release the limit.

[0008] Furthermore, a pin is fixedly provided in the mounting seat, and the pull rod is rotatably sleeved on the pin. The setting of the pin can better pull the pull rod when the pull rod is pulled to release the limit of the pawl to prevent motion interference problems during pulling.

[0009] Furthermore, an L-shaped plate is fixedly provided on one side of the frame, and a second pull rope is movably provided on the L-shaped plate. One end of the second pull rope is fixedly connected to the metal ball. The arrangement of the L-shaped plate can make the second pull rope always abut against the inner wall of the L-shaped plate when the metal ball reaches a certain height during winding, so as to always keep the horizontal distance between the metal ball and the L-shaped plate the same.

[0010] Furthermore, a first fixing plate is fixedly provided on the other side of the frame, a second fixing plate is provided on one side of the first fixing plate, and a buffer assembly is symmetrically provided between the first fixing plate and the second fixing plate.

[0011] Furthermore, the buffer assembly includes a damping cylinder, on which a second spring is movably sleeved, and both ends of the damping cylinder and the second spring are respectively fixedly arranged between the first fixing plate and the second fixing plate. When the impact on the object to be tested exceeds the maximum threshold of the connection of the object to be tested and the connection is disconnected, the second spring shortens to absorb the impact force. After the impact force is absorbed, the second spring will slowly rebound in cooperation with the damping cylinder, thereby achieving a buffering effect on the detached test object, avoiding the problem of the test object falling and hitting the surrounding inspection personnel, and improving safety.

[0012] Furthermore, there are four groups of buffer components, and each group has two buffer components. The arrangement of multiple groups of buffer components can better absorb the impact force generated by the falling test object, thereby improving safety.

[0013] Furthermore, a storage box is fixedly provided at the bottom of the frame, a second motor is fixedly provided on the top wall of the storage box, a driving end of the second motor is fixedly connected to the bottom of the rotating disk, the rotating disk is rotatably provided in the frame and a mechanical part to be impacted is fixedly welded on the top, the setting of the rotating disk can rotate the object to be tested so that multiple surfaces face the metal ball for impact testing, thereby avoiding manual adjustment of the test surface of the test object by personnel and increasing the convenience of use.

[0014] Compared with the prior art, the beneficial effect of the present invention is: by turning on the first motor, the driving end of the first motor drives the wire take-up rod to rotate so that the metal ball reaches the height to be tested and then turns off the first motor. Because the pawl and one of the grids of the ratchet are against each other, when the first motor stops, due to inertia, when the driving end of the first motor is turned counterclockwise, the pawl and the ratchet are stuck and cannot rotate, which can play a limiting role and prevent the driving end of the first motor from rotating reversely when the first motor is stopped.

[0015] Compared with the prior art, the beneficial effect of the present invention is that when the impact on the object to be tested exceeds the maximum threshold of the connection of the object to be tested and the connection is disconnected, the second spring shortens to absorb the impact force. After the impact force is absorbed, the damping cylinder will cause the second spring to slowly rebound, thereby achieving a buffering effect on the detached test object, avoiding the problem of the test object falling and hitting the surrounding test personnel, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the storage box of the utility model;

[0018] Figure 3 This is a schematic diagram of the back structure of the frame of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the connector of the utility model;

[0020] Figure 5 For this utility model Figure 1 Magnified view of point A.

[0021] In the figure: 1. frame; 2. rotating disk; 3. storage box; 4. connecting piece; 5. first motor; 6. ratchet; 7. rotating shaft; 8. pawl; 9. mounting base; 10. pull rod; 11. first spring; 12. metal ball; 13. first pull rope; 14. second pull rope; 15. L-shaped plate; 16. first fixed plate; 17. second fixed plate; 18. damping cylinder; 19. second spring; 20. second motor; 21. storage box. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5 The utility model provides a technical solution: a mechanical impact testing device, including a frame 1, a placement box 3 is fixedly provided on the top of the frame 1, a wire-taking rod is rotatably provided in the placement box 3, a first pull rope 13 is wound around the wire-taking rod and one end is fixedly connected to the first pull rope 13, the other end of the first pull rope 13 is fixedly connected to a metal ball 12, a rotating disk 2 is movably provided in the frame 1, a driving assembly and a limiting assembly are fixedly provided on one side of the placement box 3, the driving assembly is connected to the wire-taking rod, the driving assembly includes a first motor 5, ... A motor 5 is fixedly mounted on the placement box 3 and its driving end is rotatably connected to one side of the wire take-up rod. A connecting piece 4 is also fixedly provided on one side of the placement box 3. The driving end of the first motor 5 is rotatably inserted into the connecting piece 4. The limiting assembly includes a ratchet 6, which is fixedly sleeved on the driving end of the first motor 5. A rotating shaft 7 is fixedly mounted in the connecting piece 4, and a pawl 8 is rotatably sleeved on the rotating shaft 7. The pawl 8 is in contact with the ratchet 6. A first spring 11 is also movably provided in the connecting piece 4, and the other end of the first spring 11 is fixedly connected to the pawl 8.

[0024] A mounting seat 9 is fixedly provided on the top of the pawl 8 , a pull rod 10 is rotatably sleeved in the mounting seat 9 , and the other end of the pull rod 10 slides through the connecting piece 4 .

[0025] A pin is fixedly provided in the mounting seat 9, and the pull rod 10 is rotatably sleeved on the pin.

[0026] An L-shaped plate 15 is fixedly provided on one side of the frame 1 , and a second pull rope 14 is movably provided on the L-shaped plate 15 . One end of the second pull rope 14 is fixedly connected to the metal ball 12 .

[0027] During specific implementation, the first pull rope 13 is wound up according to different test positions, the first motor 5 is turned on, and the driving end of the first motor 5 drives the winding rod to rotate so that the metal ball 12 reaches the height to be tested, and then the first motor 5 is turned off. Because the pawl 8 is against one of the grids of the ratchet 6, when the first motor 5 stops due to inertia, when the driving end of the first motor 5 is turned counterclockwise, the pawl 8 and the ratchet 6 are stuck and cannot rotate, which can play a limiting role to prevent the driving end of the first motor 5 from rotating reversely when the first motor 5 is stopped; then the second pull rope 14 is wound up to make the metal ball 12 move upward in an arc, and then the outer surface of the metal ball 12 is against the inner wall of the L-shaped plate 15, and then the second pull rope 14 is paid out to make the metal ball 12 hit the test position.

[0028] See Figure 1-5 As shown, a first fixing plate 16 is fixedly provided on the other side of the frame 1, a second fixing plate 17 is provided on one side of the first fixing plate 16, and a buffer assembly is symmetrically provided between the first fixing plate 16 and the second fixing plate 17.

[0029] The buffer assembly includes a damping cylinder 18 , on which a second spring 19 is movably sleeved. Both ends of the damping cylinder 18 and the second spring 19 are fixedly disposed between the first fixing plate 16 and the second fixing plate 17 .

[0030] The number of buffer components is four groups, and the number of buffer components in each group is two.

[0031] In specific implementation, when the impact on the object to be tested exceeds the maximum threshold of the connection of the object to be tested and the connection is disconnected, the second spring 19 shortens to absorb the impact force. After the impact force is absorbed, the damping cylinder 18 cooperates to make the second spring 19 slowly rebound, thereby achieving a buffering effect on the detached test object, avoiding the problem of the test object falling and hitting the surrounding test personnel, thereby improving safety.

[0032] See Figure 1-5 A storage box 21 is fixedly provided at the bottom of the frame 1, and a second motor 20 is fixedly provided on the top wall of the storage box 21. The driving end of the second motor 20 is fixedly connected to the bottom of the rotating disk 2. The rotating disk 2 is rotatably set in the frame 1 and a mechanical part to be impacted is fixedly welded on the top. The driving end of the second motor 20 drives the rotating disk 2 to rotate so that the test surface of the test object is better oriented to the storage box 21, avoiding manual adjustment of the test surface of the test object by personnel, thereby saving labor.

[0033] In addition, it should be noted that the first pull rope 13 and the second pull rope 14 are alloy steel wire ropes. By adding alloy elements in different proportions, the alloy steel wire ropes not only have high strength and corrosion resistance, but also have excellent wear resistance. Scales are also provided on the first pull rope 13 and the second pull rope 14 to facilitate personnel to detect and calculate data; one end of the pull rod 10 is fixedly connected to a connecting rope, and the connecting rope is made of flexible material. When the limit needs to be released, the connecting rope can be pulled to release the limit of the pawl 8; the other end of the second pull rope 14 is also connected to the take-up rod for line winding and line release; The arrangement of the first fixing plate 16, the second fixing plate 17, the damping cylinder 18 and the second spring 19 plays a certain protective role, preventing the tested object from being hit by the metal ball 12 and exceeding the maximum threshold of the connection between the rotating disk 2 and the tested object and being disconnected. At this time, the first fixing plate 16 plays an intercepting role while the second spring 19 shortens to absorb the impact force. After the impact force is absorbed, the damping cylinder 18 cooperates to make the second spring 19 slowly rebound, thereby achieving a buffering effect on the detached test object, avoiding the problem of the tested object falling and hitting the surrounding test personnel, thereby improving safety.

[0034] After the first motor 5 stops, due to inertia, the driving end of the first motor 5 turns counterclockwise, and the pawl 8 and the ratchet 6 are stuck and cannot rotate, which can play a limiting role, preventing the driving end of the first motor 5 from rotating reversely when the first motor 5 stops; then the second pull rope 14 rewinds the metal ball 12 to move upward in an arc, and then the outer surface of the metal ball 12 is against the inner wall of the L-shaped plate 15; at this time, the second motor 20 can be turned on, and the driving end of the second motor 20 drives the rotating disk 2 to rotate so that the test surface of the test object is better facing the storage box 21, avoiding manual adjustment of the test surface of the test object by personnel, saving labor; then the second pull rope 14 pays out the wire to make the metal ball 12 hit the test position;

[0035] When the first pull rope 13 needs to be reeled in, the connecting rope at one end of the pull rod 10 can be pulled outward. While pulling the pull rod 10, the first spring 11 is compressed to cancel the limiting effect of the pawl 8. At this time, the driving end of the first motor 5 can rotate counterclockwise to perform the reeling operation.

Claims

1. A mechanical impact testing device, comprising a frame (1), a placement box (3) fixedly provided on the top of the frame (1), a wire-reeling rod rotatably provided in the placement box (3), a first pull rope (13) wound around the wire-reeling rod and one end of the wire-reeling rod is fixedly connected to the first pull rope (13), and a metal ball (12) is fixedly connected to the other end of the first pull rope (13), characterized in that: A rotating disk (2) is movably provided in the frame (1), a driving assembly and a limiting assembly are fixedly provided on one side of the placement box (3), the driving assembly is connected to the wire take-up roller, and the driving assembly includes a first motor (5); The first motor (5) is fixedly mounted on the placement box (3) and the driving end is rotatably connected to one side of the wire take-up rod. A connecting piece (4) is also fixedly provided on one side of the placement box (3). The driving end of the first motor (5) is rotatably inserted into the connecting piece (4). The limiting assembly includes a ratchet (6). The ratchet (6) is fixedly sleeved on the driving end of the first motor (5). A rotating shaft (7) is fixedly mounted in the connecting piece (4). A pawl (8) is rotatably sleeved on the rotating shaft (7). The pawl (8) abuts against the ratchet (6). A first spring (11) is also movably provided in the connecting piece (4). The other end of the first spring (11) is fixedly connected to the pawl (8).

2. A mechanical shock testing device according to claim 1, characterized in that: A mounting seat (9) is fixedly provided on the top of the ratchet (8), a pull rod (10) is rotatably sleeved in the mounting seat (9), and the other end of the pull rod (10) slides through the connecting piece (4).

3. A mechanical shock testing device according to claim 2, characterized in that: A pin is fixedly provided in the mounting seat (9), and the pull rod (10) is rotatably sleeved on the pin.

4. The mechanical shock testing device according to claim 1, wherein: An L-shaped plate (15) is fixedly provided on one side of the frame (1), a second pull rope (14) is movably provided on the L-shaped plate (15), and one end of the second pull rope (14) is fixedly connected to the metal ball (12).

5. The mechanical shock testing device according to claim 1, wherein: A first fixing plate (16) is fixedly provided on the other side of the frame (1), a second fixing plate (17) is provided on one side of the first fixing plate (16), and a buffer assembly is symmetrically provided between the first fixing plate (16) and the second fixing plate (17).

6. A mechanical shock testing device according to claim 5, characterized in that: The buffer assembly includes a damping cylinder (18), a second spring (19) is movably sleeved on the damping cylinder (18), and both ends of the damping cylinder (18) and the second spring (19) are respectively fixedly arranged between a first fixing plate (16) and a second fixing plate (17).

7. A mechanical shock testing device according to claim 6, characterized in that: The number of the buffer components is four groups, and the number of the buffer components in each group is two.

8. The mechanical shock testing device according to claim 1, wherein: A storage box (21) is fixedly provided at the bottom of the frame (1), a second motor (20) is fixedly provided on the top wall of the storage box (21), a driving end of the second motor (20) is fixedly connected to the bottom of the rotating disk (2), the rotating disk (2) is rotatably provided in the frame (1) and a mechanical part to be impacted is fixedly welded on the top.

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