Falling ball impact testing machine

Abstract

The utility model discloses a falling ball impact testing machine, which relates to the field of impact testing machine structures, and comprises a fixed seat, a fixed part platform is arranged on the fixed seat, a lifting device is also arranged on the fixed seat, the lifting device is connected with a test piece, the test piece comprises a falling ball, and the falling ball is arranged above the fixed part platform; a moving device is arranged between the firmware platform and the fixed seat; a clamp is arranged between the firmware platform and the test piece, and the clamp can clamp the falling ball which falls and rebounds; according to the falling ball impact testing machine, the clamp is arranged above the to-be-tested sample, so that the falling ball can be quickly and safely captured after being impacted and bounced, secondary impact of the to-be-tested sample is avoided, and the accuracy of an impact test result is improved.

Description

Technical Field

[0001] The utility model relates to the field of impact testing machine structures, in particular to a falling ball impact testing machine. Background Art

[0002] The drop ball impact test is an important method for evaluating the impact resistance of materials. This test simulates the effects of external shock loads on the material by precisely controlling the free fall of a sphere of a certain mass from a preset height directly onto the sample being tested.

[0003] However, in the actual operation of existing falling ball impact testers, when the falling ball collides with the sample, some of the kinetic energy it carries is converted into deformation or destructive energy of the sample, while the remaining energy causes the falling ball to rebound. This uncontrolled rebound behavior not only may cause the falling ball to strike the sample again, introducing additional impact variables and interfering with the accurate assessment of the material's single impact response; it may also impact other components of the testing machine, causing damage to the equipment or even safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide a falling ball impact testing machine, which is equipped with a clamp above the sample to be tested to ensure that the falling ball can be quickly and safely captured after the impact bounces back, avoiding secondary impact on the sample to be tested, thereby improving the accuracy of the impact test results.

[0005] The above-mentioned optimized structure of the present invention is achieved through the following technical solutions: a falling ball impact tester, comprising a fixed base, a fixing platform provided on the fixed base, a lifting device provided on the fixed base, a test piece connected to the lifting device, the test piece comprising a falling ball, the falling ball being provided above the fixing platform; a moving device provided between the fixing platform and the fixed base;

[0006] A clamp is provided between the fixture platform and the test piece, and the clamp can clamp the falling ball after it falls and rebounds.

[0007] In some embodiments, the clamp includes a driving cylinder, and both ends of the driving cylinder are provided with telescopic rods, and each telescopic rod is provided with a clamping plate, and two of the clamping plates can be assembled into a whole plate.

[0008] In some embodiments, a fixing rod is provided on the driving cylinder and the fixing seat, an adjusting block is sleeved on the fixing rod, the adjusting block can slide on the fixing rod, a bolt is provided on the adjusting block, and the bolt abuts against the fixing rod;

[0009] An extension rod is provided on the adjusting block, and the driving cylinder is fixed on the extension rod.

[0010] In some embodiments, the splint is vertically provided with a grooved plate.

[0011] In some embodiments, a buffer sheet is provided on the top surface of the splint and on the end surface of the splint close to each other.

[0012] In some embodiments, the test piece includes a lifting rod, the lifting rod is connected to the lifting device, an electromagnet is provided at the bottom of the lifting rod, the falling ball is provided at the bottom of the electromagnet, and the falling ball is a steel ball.

[0013] In some embodiments, a spherical groove is provided in the middle of the electromagnet, the falling ball is arranged in the spherical groove, and a photoelectric sensor is provided on the top of the spherical groove.

[0014] In some embodiments, the lifting device includes a lifting frame fixed to the fixing seat, a lifting motor is provided on the top of the lifting frame, a transmission member is connected to the output shaft of the lifting motor, the transmission member is connected to a screw rod, both ends of the screw rod are rotatably connected to the lifting frame, a lifting block is screwed on the screw rod, and the test piece is provided on the lifting block;

[0015] The lifting device further comprises two sliding rods, on which sliding blocks are provided, and the two sliding blocks are symmetrically arranged at both ends of the lifting block.

[0016] In some embodiments, the moving device includes a transverse moving component, the transverse moving component is arranged on the fixing seat, a longitudinal moving component is arranged on the transverse moving component, and the firmware platform is arranged on the longitudinal moving component.

[0017] In summary, the present invention has the following beneficial effects:

[0018] This type of falling ball impact testing machine is equipped with a clamp above the sample to be tested, so that the falling ball can be quickly and safely captured after it bounces off the sample to be tested, avoiding secondary impact on the sample to be tested, thereby improving the accuracy of the impact test results and the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 This is the main view of the utility model;

[0022] Figure 4 This is a structural diagram of the utility model with part of the baffle, a splint, and the grooved plate removed;

[0023] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 For this utility model Figure 3 Enlarged view of point B in the middle.

[0025] In the figure: 1. Fixed seat; 11. Fixed rod; 12. Adjustment block; 13. Extension rod; 2. Fixture platform; 3. Lifting device; 31. Lifting frame; 32. Lifting motor; 33. Screw; 34. Lifting block; 35. Sliding rod; 36. Slider; 4. Test piece; 41. Drop ball; 42. Lifting rod; 43. Electromagnet; 5. Moving device; 51. Horizontal moving assembly; 52. Longitudinal moving assembly; 6. Clamp; 61. Driving cylinder; 62. Clamp; 63. Grooved plate. DETAILED DESCRIPTION

[0026] 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 them. 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.

[0027] refer to Figure 1-6 , a falling ball impact testing machine includes a fixed base 1, which may include a fixed frame, which is provided with a sealing plate, which can be welded and fixed by bolts, to form a fence structure to protect the internal structure, and a firmware platform 2 is provided on the fixed base 1, which may include a fixed plate, a fixed block is provided on the fixed plate, and the fixed block locks the sample to be tested on the fixed plate by a locking bolt; the fixed base 1 is also provided with a lifting device 3, the lifting device 3 is connected to a test piece 4, the test piece 4 includes a falling ball 41, the falling ball 41 is arranged above the firmware platform 2, the falling ball 41 performs free fall motion, impacts the sample to be tested, and realizes the impact test of the sample to be tested; a moving device 5 is provided between the firmware platform 2 and the fixed base 1, which can adjust the relative position of the firmware platform 2 on the fixed base 1, thereby realizing testing of different positions of the sample to be tested; a clamp 6 is provided between the firmware platform 2 and the test piece 4, and the clamp 6 can clamp the falling ball 41 after falling and rebounding, so as to avoid secondary impact during the test of the falling ball 41, improve the accuracy of the test results, and protect other equipment.

[0028] In some embodiments, the clamp 6 includes a driving cylinder 61, and telescopic rods are provided at both ends of the driving cylinder 61. A clamp 62 is provided on the telescopic rod. The two clamps 62 can be assembled into a whole plate. The two clamps 62 are closed by the driving of the driving cylinder 61, thereby clamping the falling and rebounding ball 41.

[0029] In some embodiments, a fixing rod 11 is provided on the driving cylinder 61 and the fixing seat 1, and an adjusting block 12 is sleeved on the fixing rod 11. The adjusting block 12 can slide on the fixing rod 11, and a bolt is provided on the adjusting block 12, and the bolt abuts against the fixing rod 11; an extension rod 13 is provided on the adjusting block 12, and the driving cylinder 61 is fixed on the extension rod 13. By adjusting the bolt, the fixing and sliding of the adjusting block 12 on the fixing rod 11 are achieved, thereby achieving the adjustment of the height of the extension rod 13, and further achieving the adjustment of the distance between the clamp 6 and the sample to be tested.

[0030] In some embodiments, the clamping plate 62 is vertically provided with a groove plate 63, which can enhance the stability of the clamping plate 62 in clamping the falling ball 41, and at the same time increase the edge height of the clamping plate 62 to prevent the falling ball 41 from falling from the edge of the clamping plate 62 and impacting other positions of the sample to be tested.

[0031] In some embodiments, buffer sheets are provided on the top surface of the clamping plate 62 and on the end surfaces of the clamping plates 62 close to each other to reduce the impact force between the falling ball 41 and the clamping plate 62 and between the two clamping plates 62 when clamping the falling ball 41.

[0032] In some embodiments, the test piece 4 includes a lifting rod 42, which is connected to the lifting device 3. An electromagnet 43 is provided at the bottom of the lifting rod 42, and a falling ball 41 is provided at the bottom of the electromagnet 43. The falling ball 41 can be a steel ball. When the electromagnet 43 is powered on, it is magnetic and can fix the falling ball 41. When the electromagnet 43 is powered off, the magnetism disappears and the falling ball 41 performs free fall motion.

[0033] In some embodiments, a spherical groove is provided in the middle of the electromagnet 43, and the falling ball 41 is provided in the spherical groove to better fix the falling ball 41 and improve the accuracy of the landing point of the falling ball 41 on the sample to be tested. A photoelectric sensor is provided on the top of the spherical groove to detect whether the falling ball 41 is accurately placed in the groove. At the same time, a positioning light can be formed on the sample to be tested to improve the accuracy of the landing point, and the falling time of the falling ball 41 can be measured and calculated. It is connected to the control system and the starting time of the driving cylinder 61 is judged by the falling time, so as to timely clamp the falling ball 41 after rebounding to avoid secondary impact of the falling ball 41.

[0034] In some embodiments, the lifting device 3 includes a lifting frame 31 fixed on the fixed seat 1, and a lifting motor 32 is provided on the top of the lifting frame 31. A transmission part is connected to the output shaft of the lifting motor 32, and the transmission part is connected to the screw rod 33. The transmission part can be a worm wheel and a worm that mesh with each other. The worm is connected to the output shaft of the lifting motor 32, and the turbine sleeve is provided on the screw rod 33. Through the transmission of the transmission part, the lifting motor 32 can drive the screw rod 33 to rotate; the top and bottom of the screw rod 33 are both rotatably connected to the lifting frame 31, and a lifting block 34 is screwed on the screw rod 33, and a test piece 4 is provided on the lifting block 34; the lifting device 3 also includes two sliding rods 35, and a sliding slider 36 is provided on the sliding rod 35. The two sliders 36 are symmetrically arranged at both ends of the lifting block 34.

[0035] The lifting motor 32 is started, driving the screw rod 33 to rotate. Due to the sliding between the slider 36 and the slide rod 35, the lifting block 34 is restricted to rotate with the screw rod 33, thereby converting the rotation of the screw rod 33 into vertical movement of the lifting block 34, thereby realizing the change in height of the test piece 4 to meet the test requirements of different heights.

[0036] In some embodiments, the moving device 5 includes a lateral moving component 51, which is arranged on the fixed base 1. The lateral moving component 51 is provided with a longitudinal moving component 52, and the longitudinal moving component 52 is provided with a firmware platform 2. Through the mutual cooperation of the lateral moving component 51 and the longitudinal moving component 52, the position of the firmware platform 2 on the fixed base 1 is adjusted, so that the falling ball 41 can be aligned with different positions of the sample to be tested on the firmware platform 2, thereby adapting to the testing of samples of different sizes or performing multi-point impact tests.

[0037] The structures of the transverse moving component 51 and the longitudinal moving component 52 can be the same, and both can include a fixed box, a moving motor is provided on one side of the fixed box, a moving groove is provided in the fixed box, a screw is connected to the output shaft of the moving motor, the screw is provided in the moving groove, and is rotatably connected to the bottom wall of the moving groove, a moving block is screwed on the screw, and the moving block can be connected to the longitudinal moving component 52 and the firmware platform 2. The moving motor rotates, driving the screw to rotate. Since the moving block is fixedly connected to the longitudinal moving component 52 or the firmware platform 2, the moving block cannot rotate, thereby converting the rotation of the screw into movement of the moving block on the screw, thereby realizing the movement of the longitudinal moving component 52 or the firmware platform 2.

[0038] The specific working principle is as follows:

[0039] During operation, first fix the sample to be tested on the firmware platform 2, lift the test piece 4 in the test piece 4 to the set height through the lifting device 3, adjust the horizontal moving component 51 and the vertical moving component 52 so that the falling point of the falling ball 41 is aligned with the test point of the sample to be tested, and use the bolts and the adjustment block 12 to make the clamping plate 62 be located at the set height above the sample to be tested.

[0040] Then, electromagnet 43 is energized to attract and hold falling ball 41, keeping it stationary. When the power is turned off, electromagnet 43 releases falling ball 41, causing it to freely fall and impact the test sample on fixture platform 2. After the impact, falling ball 41 rebounds, and a photoelectric sensor detects a signal, immediately triggering the action of clamp 6. Cylinder 61 drives clamping plate 62 to quickly close, clamping the rebounded falling ball 41.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. 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 various embodiments of the present invention.

Claims

1. A falling ball impact testing machine, comprising a fixing seat (1), wherein a fixing platform (2) is provided on the fixing seat (1), and characterized in that: The fixing seat (1) is further provided with a lifting device (3), the lifting device (3) is connected to a test piece (4), the test piece (4) includes a falling ball (41), and the falling ball (41) is arranged above the fixing platform (2); a moving device (5) is provided between the fixing platform (2) and the fixing seat (1); A clamp (6) is provided between the fixture platform (2) and the test piece (4), and the clamp (6) can clamp the falling ball (41) after it falls and rebounds; The clamp (6) includes a driving cylinder (61), and both ends of the driving cylinder (61) are provided with telescopic rods, and the telescopic rods are provided with clamping plates (62), and two of the clamping plates (62) can be assembled into a whole plate; The test piece (4) includes a lifting rod (42), the lifting rod (42) is connected to the lifting device (3), an electromagnet (43) is provided at the bottom of the lifting rod (42), and the falling ball (41) is provided at the bottom of the electromagnet (43), and the falling ball (41) is a steel ball; A spherical groove is provided in the middle of the electromagnet (43), the falling ball (41) is arranged in the spherical groove, and a photoelectric sensor is provided on the top of the spherical groove.

2. A falling ball impact testing machine according to claim 1, characterized in that: A fixing rod (11) is provided on the driving cylinder (61) and the fixing seat (1), an adjusting block (12) is sleeved on the fixing rod (11), the adjusting block (12) can slide on the fixing rod (11), a bolt is provided on the adjusting block (12), and the bolt abuts against the fixing rod (11); An extension rod (13) is provided on the adjustment block (12), and the driving cylinder (61) is fixedly provided on the extension rod (13).

3. The falling ball impact testing machine according to claim 1, characterized in that: The clamping plate (62) is vertically provided with a grooved plate (63).

4. The falling ball impact testing machine according to claim 1, characterized in that: A buffer sheet is provided on the top surface of the clamping plate (62) and on one end surface of the clamping plate (62) close to each other.

5. The falling ball impact testing machine according to claim 1, characterized in that: The lifting device (3) comprises a lifting frame (31) fixed on the fixing seat (1), a lifting motor (32) is provided on the top of the lifting frame (31), a transmission member is connected to the output shaft of the lifting motor (32), the transmission member is connected to a screw rod (33), both ends of the screw rod (33) are rotatably connected to the lifting frame (31), a lifting block (34) is screwed onto the screw rod (33), and the test piece (4) is provided on the lifting block (34); The lifting device (3) further comprises two slide bars (35), each of which is provided with a slidable slider (36), and the two sliders (36) are symmetrically arranged at both ends of the lifting block (34).

6. The falling ball impact testing machine according to claim 1, characterized in that: The moving device (5) comprises a transverse moving component (51), the transverse moving component (51) being arranged on the fixing seat (1), a longitudinal moving component (52) being arranged on the transverse moving component (51), and the firmware platform (2) being arranged on the longitudinal moving component (52).

Images