Impact testing machine centering device

Abstract

The utility model discloses a kind of impact testing machine centering device, including base and fixed frame, first limiting slot is opened in fixed frame, first motor is fixedly connected with the one end away from base of fixed frame, first motor output end is fixedly connected with first screw rod, first screw rod is threadedly connected with first slider, first slider upper end is fixedly connected with auxiliary rod, auxiliary rod is inserted with movable block, movable block one end is fixedly connected with limiting rod, limiting rod one end away from movable block is fixedly connected with control screen, the utility model can adjust the height of movable block by installing on first slider, to drive swing arm and pendulum height variation, then through adjustable second slider cooperation pressing plate to limit sample, and through first distance sensor and second sensor to monitor distance signal, the position of pendulum of impact testing machine and sample can be adjusted, the rotation angle of pendulum and sample center point correspond, improve the precision of impact testing machine in the detection process of sample.

Description

Technical Field

[0001] This utility model relates to the field of impact testing machine technology, and specifically to an impact testing machine centering device. Background Technology

[0002] An impact testing machine is a testing device used to determine the mechanical properties of materials or components under impact loads. By simulating impact or collision scenarios in actual working conditions, it can evaluate the impact resistance, toughness, fracture behavior and other indicators of materials. Impact testing machines mainly include simply supported beam impact testing machines, cantilever beam impact testing machines and clamp-type impact testing machines.

[0003] In practical use, the pendulum of the simply supported beam impact testing machine needs to impact the center point of the specimen. However, the specimens are of different sizes and shapes, which will cause relative displacement between the specimen and the pendulum during the impact. This will result in poor accuracy of the impact testing machine during the specimen testing process, and the position of the pendulum and the specimen of the impact testing machine needs to be constantly adjusted, which will affect the centering detection efficiency of the impact testing machine. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides an alignment device for an impact testing machine to reduce the inaccuracy of the impact testing machine during the sample testing process and improve the testing efficiency.

[0005] The technical solution adopted by this utility model to solve the technical problem is: an impact testing machine centering device, including a base and a fixed frame. A first limiting groove is provided in the fixed frame. A first motor is fixedly connected to the end of the fixed frame away from the base. A first lead screw is fixedly connected to the output end of the first motor. A first slider is threaded onto the first lead screw. An auxiliary rod is fixedly connected to the upper end of the first slider. A movable block is inserted into the auxiliary rod. A limiting rod is fixedly connected to one end of the movable block. A control panel is fixedly connected to the end of the limiting rod away from the movable block. A pressure rod is threaded onto the movable block. An adjustment mechanism is threaded onto the movable block. The adjustment rod has an end that contacts an auxiliary rod. The bottom end of the adjustment rod is rotatably connected to a first slider. A connecting rod is rotatably connected to the movable block. A swing arm is fixedly connected to the center of the connecting rod. A pendulum is fixedly connected to the end of the swing arm away from the limiting rod. A second limiting groove is opened on the upper inner surface of the base. A second motor is fixedly connected to one side of the base located in the second limiting groove. A second lead screw is fixedly connected to the output end of the second motor. A second slider is threaded onto the second lead screw. A vertical plate is rotatably connected to the side of the base away from the second slider. Two first distance sensors are fixedly connected to the side of the vertical plate near the second slider.

[0006] As a preferred technical solution of this utility model, the second slider has a groove on the side near the pendulum and a locking rod is fixedly connected in the groove. A pressure plate is sleeved on the locking rod, and a spring is sleeved on the upper end of the pressure plate. By setting the locking rod and the pressure plate, the pressure plate and the second slider can provide auxiliary limiting for the sample under the action of the spring.

[0007] As a preferred technical solution of this utility model, fastening rods are threadedly connected to both sides of the upper end of the second slider. The ends of the fastening rods are in contact with the upper end of the base. By setting the fastening rods, the stability between the second slider and the base can be further improved, and the damage to the second lead screw caused by impact can be reduced.

[0008] As a preferred technical solution of this utility model, both the second slider and the first slider are provided with arc-shaped grooves, and arc-shaped plates are inserted into the arc-shaped grooves. The arc-shaped plates are respectively fixedly connected in the first limiting groove and the second limiting groove. By setting the arc-shaped grooves and arc-shaped plates, shielding can be provided to reduce the contact between the debris generated during stamping and the lead screw structure.

[0009] As a preferred technical solution of this utility model, a second distance sensor is fixedly connected to the side of the second limiting groove away from the second motor. The end of the second distance sensor corresponds to the connecting rod. By setting the second distance sensor, the distance between it and the connecting rod can be monitored, thereby facilitating the adjustment of the height of the movable block.

[0010] This invention has the following advantages: by installing an adjustable movable block on the first slider, the height of the swing arm and the pendulum changes. Then, the adjustable second slider, in conjunction with the pressure plate, limits the sample. The distance signal is monitored by the first and second distance sensors, which can adjust the position of the pendulum and the sample of the impact testing machine, so that the rotation angle of the pendulum corresponds to the center point of the sample, thereby improving the accuracy of the impact testing machine in the sample testing process. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of an impact testing machine centering device according to a preferred embodiment of the present invention;

[0012] Figure 2 This is a side sectional view of the base of the centering device of an impact testing machine according to a preferred embodiment of the present invention.

[0013] Figure 3 This is a top view of the base of the centering device of an impact testing machine according to a preferred embodiment of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 1. Base; 2. Fixed frame; 3. First limiting groove; 4. First lead screw; 5. First slider; 6. Movable block; 7. Limiting rod; 8. Adjusting rod; 9. Pressure rod; 10. Control panel; 11. Swing arm; 12. Pendulum; 13. Second limiting groove; 14. Second lead screw; 15. Second slider; 16. Clamping rod; 17. Pressure plate; 18. Vertical plate; 19. First distance sensor; 20. Fastening rod; 21. Arc plate; 22. Second distance sensor. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Please refer to the following: Figure 1-3 The impact testing machine centering device shown includes a base 1 and a fixed frame 2. A first limiting groove 3 is provided in the fixed frame 2. A first motor is fixedly connected to the end of the fixed frame 2 away from the base 1. The first motor can drive a first lead screw 4 to rotate, thereby causing a first slider 5 to move on the fixed frame 2. The output end of the first motor is fixedly connected to the first lead screw 4. The first slider 5 is threadedly connected to the first lead screw 4. An auxiliary rod is fixedly connected to the upper end of the first slider 5. A movable block 6 is movably inserted into the auxiliary rod. One end of the movable block 6 is fixedly connected to... A limit rod 7 is provided, with a control panel 10 fixedly connected to the end of the limit rod 7 away from the movable block 6. A pressure rod 9 is threadedly connected to the movable block 6, and an adjusting rod 8 is threadedly connected to the movable block 6. Rotating the adjusting rod 8 causes the movable block 6 to move up and down under the limit of the auxiliary rod, and the pressure rod 9 provides a limit to prevent the adjusting rod 8 from rotating accidentally during impact testing. The end of the adjusting rod 8 contacts the auxiliary rod, and the bottom end of the adjusting rod 8 is rotatably connected to the first slider 5. A connecting rod is rotatably connected to the movable block 6, and the connecting rod is connected to both sides of the base 1. The protrusions are spaced evenly. A swing arm 11 is fixedly connected to the center of the connecting rod. The lengths of the swing arm 11 and the pendulum 12 are fixed. The pendulum 12 and the swing arm 11 are located at the center of the connecting rod. The end of the swing arm 11 away from the limiting rod 7 is fixedly connected to the pendulum 12. A second limiting groove 13 is opened on the upper surface of the base 1. A second motor is fixedly connected to one side of the base 1 located in the second limiting groove 13. The second motor drives the second lead screw 14 to rotate, which enables the second slider 15 to move within the second limiting groove 13. The side of the second limiting groove 13 near the vertical plate 18 is located at the center point of the base 1. The output end of the second motor is fixedly connected to the second lead screw 14. The second slider 15 is threadedly connected to the second lead screw 14. A vertical plate 18 is rotatably connected to the side of the base 1 away from the second slider 15. Two first distance sensors 19 are fixedly connected to the side of the vertical plate 18 near the second slider 15. The two first distance sensors 19 correspond to the second slider 15 and the sample body, respectively, and feed the distance signal back to the control screen 10 (the length, width and height of the sample need to be measured in advance).

[0017] The second slider 15 has a groove on the side near the pendulum 12, and a locking rod 16 is fixedly connected in the groove. A pressure plate 17 is sleeved on the locking rod 16, and a spring is sleeved on the upper end of the locking rod 16 and the pressure plate 17. By setting the locking rod 16 and the pressure plate 17, the second slider 15 and the pressure plate 17 can provide auxiliary limiting for the sample under the action of the spring, so as to improve the stability during the impact.

[0018] The second slider 15 has fastening rods 20 threadedly connected to both sides of its upper end. The ends of the fastening rods 20 are in contact with the upper end of the base 1. By setting the fastening rods 20, the position of the second slider 15 can be further stabilized after the second motor adjusts the position of the second lead screw 14, thereby improving the stability of the second slider 15 during the impact test.

[0019] Both the second slider 15 and the first slider 5 are provided with arc-shaped grooves, and arc-shaped plates 21 are inserted into the arc-shaped grooves. The arc-shaped plates 21 are fixedly connected in the first limiting groove 3 and the second limiting groove 13 respectively. By setting arc-shaped grooves and arc-shaped plates 21 on the first slider 5 and the second slider 15, the arc surface structure of the arc-shaped plates 21 can facilitate the falling of debris generated by the impact and can shield the upper side of the first lead screw 4 and the second lead screw 14, thereby providing shielding, reducing the direct contact between the debris generated by the impact test and the lead screw structure, and reducing the rotational stiffness of the lead screw structure.

[0020] Among them, a second distance sensor 22 is fixedly connected in the second limiting groove 13 on the side away from the second motor. The end of the second distance sensor 22 corresponds to the connecting rod. By setting the second distance sensor 22, the distance between the bottom side of the base 1 and the connecting rod can be monitored, thereby adjusting the height of the pendulum 12 and adjusting the pendulum 12 to correspond to the overall center point of the sample body, further improving the adjustment adaptability of the impact testing machine.

[0021] Working principle: The sample to be tested is placed in the base 1. Based on the length, width, and height of the sample, the length from the center point of the sample to its edge is calculated. The sample is then auxiliaryly limited by the pressure plate 17 in conjunction with the second slider 15 and the base 1. Furthermore, the distance sensor 19 monitors the distance between the second slider 15, the sample body, and the vertical plate 18. Then, the first motor and the second motor drive the first lead screw 4 and the second lead screw 14 to rotate, causing the first slider 5 and the second slider 15 to move. Finally, the vertical plate 18 is flipped so that it is perpendicular to the base 1 (according to...). Figure 1 According to the model fed back by the first distance sensor 19, the position of the sample to be tested is adjusted. Then, according to the distance signal fed back by the second distance sensor 22, the adjusting rod 8 is manually rotated to move the movable block 6 up and down. Then, the pressure rod 9 and the fastening rod 20 limit the movable block 6 and the second slider 15 respectively, thereby increasing the adjustment speed and improving the accuracy of the impact testing machine in the sample testing process.

[0022] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0023] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A centering device for an impact testing machine, comprising a base (1) and a fixing frame (2), characterized in that, The fixed frame (2) has a first limiting groove (3) inside. A first motor is fixedly connected to the end of the fixed frame (2) away from the base (1). A first lead screw (4) is fixedly connected to the output end of the first motor. A first slider (5) is threaded onto the first lead screw (4). An auxiliary rod is fixedly connected to the upper end of the first slider (5). A movable block (6) is inserted into the auxiliary rod. A limiting rod (7) is fixedly connected to one end of the movable block (6). A control panel (10) is fixedly connected to the end of the limiting rod (7) away from the movable block (6). A pressure rod (9) is threaded onto the movable block (6). An adjusting rod (8) is threaded onto the movable block (6). The end of the adjusting rod (8) contacts the auxiliary rod. The bottom end of the adjusting rod (8) rotates. The first slider (5) is dynamically connected, and a connecting rod is rotatably connected to the movable block (6). A swing arm (11) is fixedly connected at the center of the connecting rod. A pendulum (12) is fixedly connected to the end of the swing arm (11) away from the limiting rod (7). A second limiting groove (13) is opened on the upper surface of the base (1). A second motor is fixedly connected to the base (1) on one side of the second limiting groove (13). A second lead screw (14) is fixedly connected to the output end of the second motor. A second slider (15) is threadedly connected to the second lead screw (14). A vertical plate (18) is rotatably connected to the side of the base (1) away from the second slider (15). Two first distance sensors (19) are fixedly connected to the side of the vertical plate (18) close to the second slider (15).

2. The centering device for an impact testing machine as described in claim 1, characterized in that, The second slider (15) has a groove on the side near the pendulum (12) and a locking rod (16) is fixedly connected in the groove. A pressure plate (17) is sleeved on the locking rod (16) and a spring is sleeved on the upper end of the pressure plate (17) of the locking rod (16).

3. The centering device for an impact testing machine as described in claim 2, characterized in that, The upper ends of the second slider (15) are threaded with fastening rods (20) on both sides, and the ends of the fastening rods (20) are in contact with the upper end of the base (1).

4. The centering device for an impact testing machine as described in claim 3, characterized in that, Both the second slider (15) and the first slider (5) are provided with arc-shaped grooves, and arc-shaped plates (21) are inserted into the arc-shaped grooves. The arc-shaped plates (21) are respectively fixedly connected in the first limiting groove (3) and the second limiting groove (13).

5. The centering device for an impact testing machine as described in claim 4, characterized in that, A second distance sensor (22) is fixedly connected to the side of the second limiting groove (13) away from the second motor, and the end of the second distance sensor (22) corresponds to the connecting rod.

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