Drop hammer impact test equipment

Abstract

The utility model provides a drop hammer impact test device, and relates to a drop hammer impact test device. The equipment comprises a guide device, a bracket device, a drop hammer device and a data acquisition device. The guide device comprises a guide pipe extending in the vertical direction. The support device is connected with the outer wall of the guide pipe, and the guide pipe is vertically placed. The drop hammer device is movably accommodated in an inner cavity of the guide pipe; the data acquisition device is arranged at one end, close to the ground, of the guide pipe and used for testing the impact speed of the drop hammer device. Based on the arrangement of the guide pipe, the path of the drop hammer device in the falling process is limited, the test result is prevented from being influenced by deviation of the drop hammer device, the feasibility and accuracy of the test are improved, and meanwhile, the personal safety of operators is also ensured.

Description

Technical Field

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

[0002] In actual engineering machinery, many structural parts are subject to impact loads. Machine design should strive to avoid impact loads, but due to the characteristics of the structure or operation, impact loads are difficult to avoid. In order to understand the performance of materials under impact loads, impact tests must be carried out.

[0003] At present, the main methods for testing the dynamic impact performance of materials and structures include pendulum impact, drop hammer impact, and drop impact. The drop hammer impact method is widely used in engineering because the impact energy is easy to control and the specimen is convenient to place. However, during the falling process, the drop hammer often deviates, which greatly reduces the feasibility of the test and poses a certain threat to the safety of the operator. Utility Model Content

[0004] The purpose of the utility model is to provide a drop hammer impact testing device, which can limit the path of the drop hammer device during the test process, avoid its deviation affecting the test results, improve the feasibility and accuracy of the test, and ensure the personal safety of the operator.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In the first aspect, the utility model provides a drop hammer impact test device, comprising a guide device, a bracket device, a drop hammer device and a data acquisition device; the guide device comprises a guide tube extending along the vertical direction; the bracket device is connected to the outer wall of the guide tube and places the guide tube vertically; the drop hammer device can be movably accommodated in the inner cavity of the guide tube; the data acquisition device is arranged at one end of the guide tube close to the ground, and is used to test the impact speed of the drop hammer device.

[0007] In an optional embodiment, the guide tube is also provided with a through hole, and the guide device also includes a stop sleeve and a stop pin. The stop sleeve is slidably connected to the outer wall of the guide tube and is provided with a positioning hole that can be aligned with the through hole. The stop pin can penetrate the positioning hole and the through hole in sequence to support the drop hammer device.

[0008] In an optional embodiment, there are multiple through holes, and the multiple through holes are spaced apart in the guide tube along the vertical direction.

[0009] In an optional embodiment, the guide device further comprises a positioning sleeve threadedly connected to the outer wall of the guide tube, and the positioning sleeve is located below the stop sleeve and abuts against the stop sleeve.

[0010] In an optional embodiment, the support device includes a main shaft sleeve and at least two inclined support legs, and the main shaft sleeve is sleeved on the outer wall of the guide tube, one end of any inclined support leg is connected to the main shaft sleeve, and the other end is used to abut against the ground.

[0011] In an optional embodiment, the support device further includes a ground support plate and an adjusting wheel, and one end of any inclined supporting foot away from the main shaft sleeve is connected to the ground support plate through the adjusting wheel, and the ground support plate is used to support the ground.

[0012] In an optional embodiment, a universally adjustable foot cup is provided on one side of the ground-supporting foot plate away from the ground, and the adjusting wheel is provided with a long bolt that cooperates with the universally adjustable foot cup.

[0013] In an optional embodiment, the support device also includes an auxiliary sleeve and a connecting rod, and the auxiliary sleeve is sleeved on the outer wall of the guide tube, one end of the connecting rod is connected to the auxiliary sleeve, and the other end is slidably connected to the oblique support foot, and the connecting rod corresponds to the oblique support foot one by one.

[0014] In an optional embodiment, the drop hammer device includes a mounting seat, an electromagnet and a drop hammer member arranged in sequence from top to bottom, the mounting seat is slidably connected to the inner wall of the guide tube, and the mounting seat is fixedly connected to the electromagnet, and the electromagnet is magnetically connected to the drop hammer member.

[0015] In an optional embodiment, the data acquisition device includes a fixed seat and two speed sensors. The fixed seat is mounted on the outer wall of the guide tube. The two speed sensors are arranged on the fixed seat at intervals along the vertical direction, and the speed sensors are used to test the impact speed of the drop hammer device.

[0016] The beneficial effects of the embodiments of the utility model include:

[0017] The utility model provides a drop hammer impact test device, including a guide device, a bracket device, a drop hammer device and a data acquisition device. The guide device includes a guide tube extending in a vertical direction; the bracket device is connected to the outer wall of the guide tube and places the guide tube vertically; the drop hammer device can be movably accommodated in the inner cavity of the guide tube; the data acquisition device is arranged at one end of the guide tube close to the ground, and is used to test the impact speed of the drop hammer device. Based on the arrangement of the above-mentioned guide tube, the path of the drop hammer device during the falling process is limited, avoiding its deviation affecting the test results, improving the feasibility and accuracy of the test, and also ensuring the personal safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a drop weight impact test device provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of a drop hammer device provided in an embodiment of the utility model;

[0021] Figure 3 Another schematic diagram of the drop hammer device provided by the embodiment of the utility model;

[0022] Figure 4 The embodiment of the utility model provides Figure 3 Schematic diagram of the cross section along the AA direction;

[0023] Figure 5 A schematic diagram of a data acquisition device provided by an embodiment of the utility model;

[0024] Figure 6 A schematic diagram of a bracket device provided in an embodiment of the utility model;

[0025] Figure 7 The embodiment of the utility model provides Figure 6 The enlarged schematic diagram of point A in the middle;

[0026] Figure 8 This is a schematic diagram of a guide device provided in an embodiment of the utility model.

[0027] Icons: 10-drop hammer impact test equipment; 100-guide device; 110-guide tube; 111-through hole; 131-anti-drop sleeve; 133-anti-drop pin; 150-positioning sleeve; 151-handle; 300-bracket device; 310-spindle sleeve; 320-oblique support foot; 330-support foot plate; 331-universal adjustment foot cup; 340-adjusting wheel; 341-long bolt; 350-auxiliary shaft sleeve; 360-connecting rod; 500-drop hammer device; 510-mounting seat; 511-matching groove; 530-electromagnet; 550-drop hammer; 551-hammer body; 553-hammer head; 700-data acquisition device; 710-fixed seat; 730-speed sensor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the devices of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Figure 1 This is a schematic diagram of a drop weight impact testing device 10 provided in an embodiment of the utility model. Figure 2 This is a schematic diagram of a drop hammer device 500 provided in an embodiment of the present utility model. Figure 1 and Figure 2 The utility model provides a drop hammer impact testing device 10, including a guide device 100, a support device 300, a drop hammer device 500 and a data acquisition device 700.

[0035] Among them, the guide device 100 includes a guide tube 110 extending along the vertical direction; the bracket device 300 is connected to the outer wall of the guide tube 110 and makes the guide tube 110 placed vertically; the drop hammer device 500 can be movably accommodated in the inner cavity of the guide tube 110; the data acquisition device 700 is arranged at one end of the guide tube 110 close to the ground, and is used to test the impact speed of the drop hammer device 500.

[0036] It is understandable that the guide tube 110 extending in the vertical direction can pre-align the test piece and guide the drop hammer device 500 at a preset height to fall from top to bottom. Therefore, on the one hand, the device is easy to operate, flexible to use, and has high assembly and disassembly efficiency. On the other hand, it can be applied to impact tests of composite materials of various models or specifications and has versatility. Moreover, based on the above-mentioned settings, the path of the drop hammer device 500 during the falling process is limited, which prevents its deviation from affecting the test results, improves the feasibility and accuracy of the test, and also ensures the personal safety of the operator.

[0037] Please refer again Figures 2 to 4 ,in, Figure 4 The embodiment of the utility model provides Figure 3 The drop hammer device 500 includes a mounting seat 510, an electromagnet 530 and a drop hammer 550 arranged in sequence from top to bottom, the mounting seat 510 is slidably connected to the inner wall of the guide tube 110, the mounting seat 510 is fixedly connected to the electromagnet 530, and the electromagnet 530 is magnetically connected to the drop hammer 550.

[0038] When the drop hammer 550 is released, the power is turned on, the adsorption force of the electromagnet 530 is disconnected, and the drop hammer 550 is released. When the drop hammer 550 is reset, the power is disconnected, the adsorption force of the electromagnet 530 is restored, and the drop hammer 550 is magnetically attracted. Based on this, the staff can automatically control the test by turning the power on and off, reduce manual participation, and enhance the reliability of the test data.

[0039] In addition, considering that the electromagnet 530 and the drop hammer 550 are too far apart after the experiment, the drop hammer 550 is little affected by the adsorption force and is difficult to reset, the staff can set a lifting ring at one end of the mounting base 510 away from the electromagnet 530, and the traction rope is connected to the lifting ring. Specifically, the staff slowly releases the traction rope so that the electromagnet 530 contacts and adsorbs the drop hammer 550, and then slowly retracts the traction rope to achieve reset. Optionally, the drop hammer impact test device 10 also includes a lifting device, one end of the traction rope is telescopically connected to the lifting device, and the other end is connected to the mounting base 510.

[0040] To improve the effectiveness of the test, the drop hammer 550 includes a hammer body 551 and a hammer head 553 arranged in sequence from top to bottom, and the hammer body 551 is slidably connected to the inner wall of the guide tube 110, and one end of the hammer body 551 is magnetically connected to the electromagnet 530, and the other end is connected to the hammer head 553. It can be understood that the setting of the hammer body 551 can ensure sliding relative to the guide tube 110 to ensure free fall, and the setting of the hammer head 553 can concentrate the impact load, so that the drop hammer impact test device 10 can further accurately evaluate the test piece.

[0041] See also Figure 5 The data acquisition device 700 includes a fixed seat 710 and two speed sensors 730. The fixed seat 710 is sleeved on the outer wall of the guide tube 110. The two speed sensors 730 are arranged on the fixed seat 710 at intervals along the vertical direction, and the speed sensors 730 are used to test the impact speed of the drop hammer device 500.

[0042] Through the above arrangement, the two velocity sensors 730 can obtain the impact speed of the drop hammer device 500 at different heights, and the staff can obtain the acceleration of the drop hammer device 500 and the corresponding impact load by comparing the two impact speeds. Afterwards, the data of the hammer head 553 in the drop hammer device 500 after the impact contact with the test piece is collected at a high speed synchronously, and the impact resistance of the test piece and the damage and fracture state of the test piece are analyzed.

[0043] See also Figure 6 In order to improve the stability of the vertical placement of the guide tube 110, the bracket device 300 includes a main shaft sleeve 310 and at least two inclined support legs 320, and the main shaft sleeve 310 is sleeved on the outer wall of the guide tube 110, and one end of any inclined support leg 320 is connected to the main shaft sleeve 310, and the other end is used to abut against the ground.

[0044] It can be understood that one end of the oblique support foot 320 is against the ground, and the other end is supported on the guide tube 110 through the main shaft sleeve 310, and the oblique support foot 320, the guide tube 110 and the ground form a triangle to ensure the stability of the test equipment. Optionally, the number of oblique support feet 320 is three, and they are arranged at intervals along the circumference of the main shaft sleeve 310.

[0045] Furthermore, the support device 300 also includes a ground support foot plate 330 and an adjustment wheel 340. The end of any inclined support foot 320 away from the main shaft sleeve 310 is connected to the ground support foot plate 330 through the adjustment wheel 340, and the ground support foot plate 330 is used to support the ground. It should be noted that the ground support foot plate 330 can fully contact the ground to provide overall balance and stability for the drop weight impact test device 10. In addition, it can be understood that the adjustment wheel 340, the ground support foot plate 330 and the inclined support plate correspond to each other.

[0046] Specifically, see Figure 7 The side of the supporting foot plate 330 away from the ground is provided with a universal adjustment foot cup 331, and the adjusting wheel 340 is provided with a long bolt 341 that cooperates with the universal adjustment foot cup 331. It can be understood that the universal adjustment foot cup 331 can rotate relative to any direction, and drive the adjusting wheel 340 and the oblique support foot 320 to rotate, so as to adjust the inclination angle of the oblique support foot 320 and the height of the main shaft sleeve 310, so as to adapt to different environments.

[0047] Further, see again Figure 6 In order to strengthen the supporting structure, the support device 300 further includes an auxiliary sleeve 350 and a connecting rod 360, and the auxiliary sleeve 350 is sleeved on the outer wall of the guide tube 110, one end of the connecting rod 360 is connected to the auxiliary sleeve 350, and the other end is slidably connected to the oblique support foot 320, and the connecting rod 360 corresponds to the oblique support foot 320. Optionally, a universal level can also be set on the auxiliary sleeve 350 to detect the overall horizontality of the drop weight impact test device 10 at any time.

[0048] Based on the above configuration, the staff can adjust the position of the support foot plate 330 to adjust the inclination of the oblique support foot 320, and adjust the height of the main shaft sleeve 310 and the auxiliary shaft sleeve 350, thereby adjusting the height, horizontality and balance of the guide tube 110. In addition, when the drop weight impact test device 10 is in a non-experimental state, the staff can retract the oblique support foot 320 and the connecting rod 360 to improve portability.

[0049] In addition, to facilitate the convergence in this process, the inner diameters of the main shaft sleeve 310 and the auxiliary shaft sleeve 350 are adjustable, so as to adjust the positions of the two relative to the guide tube 110, so as to assist in the height positioning adjustment of the guide tube 110 and the convergence adjustment of the oblique support foot 320. In addition, the oblique support foot 320, the support foot plate 330, the adjustment wheel 340, the main shaft sleeve 310 and the auxiliary sleeve can all be made of aluminum alloy.

[0050] See also Figure 1 and Figure 8Next, the guide device 100 will be described in detail. The guide tube 110 is also provided with a through hole 111, and the guide device 100 further includes a stopper sleeve 131 and a stopper pin 133. The stopper sleeve 131 is slidably connected to the outer wall of the guide tube 110 and is provided with a positioning hole that can be aligned with the through hole 111. The stopper pin 133 can penetrate the positioning hole and the through hole 111 in sequence to resist the drop hammer device 500.

[0051] Based on this, the anti-drop pin 133 can prevent the drop hammer device 500 from falling when it is not in the experimental state. In addition, the staff can also open a matching groove 511 on the mounting seat 510 of the drop hammer device 500 to engage with the anti-drop pin 133, so as to ensure the stability of the abutment. Optionally, the matching groove 511 is arranged around the mounting seat 510.

[0052] like Figure 8 As shown, there are multiple through holes 111, and the multiple through holes 111 are arranged at intervals in the vertical direction on the guide tube 110. Based on this, by adjusting the stop pin 133 to penetrate the through holes 111 at different heights, the drop hammer device 500 can be positioned at different heights, thereby obtaining test data at different heights, enriching the operability of the test. Optionally, the staff can mark scales near the through holes 111 at different heights for easy selection.

[0053] In addition, it should be noted that the guide tube 110 can be made of stainless steel, which not only ensures that the inner wall of the guide tube 110 is smooth and wear-resistant, reduces friction, but also ensures that the guide tube 110 has sufficient rigidity and is not easily deformed.

[0054] In order to enhance the stability of the anti-fall sleeve 131 when it is connected, the guide device 100 also includes a positioning sleeve 150 threadedly connected to the outer wall of the guide tube 110, and the positioning sleeve 150 is located below the anti-fall sleeve 131 and abuts against the anti-fall sleeve 131. Based on the above arrangement, on the one hand, the positioning sleeve 150 can abut against the anti-fall sleeve 131 to prevent it from slipping or falling due to gravity, thereby affecting the test data. On the other hand, the staff can adjust the position of the anti-fall sleeve 131 by rotating the positioning sleeve 150, so that the test is more accurate. In addition, a plurality of handles 151 are circumferentially arranged on the outer wall of the positioning sleeve 150. The staff can hold the handle 151 and drive the positioning sleeve 150 to rotate so as to adjust the positioning sleeve 150 to a suitable position.

[0055] Taking this embodiment as an example, the utility model provides a drop hammer impact test device 10, and its working process and working principle are as follows:

[0056] Adjust the guide tube 110 to a suitable height by adjusting the supporting foot plate 330 and the inclined supporting foot 320, and observe the universal level on the auxiliary shaft sleeve 350 at the same time, and observe the horizontal value displayed. Then, fine-tune the adjusting wheel 340 and the foot plate to make them reach the horizontal requirement. Then, fine-tune the positioning sleeve 150, hold the anti-drop sleeve 131 to the scale indication position required for the test, and tighten the positioning sleeve 150. At this time, insert the anti-drop pin 133 to fix the drop hammer device 500. Place the test piece that needs to be impact tested at the bottom end of the guide tube 110. At this point, the previous positioning work is completed.

[0057] The power is turned on, the adsorption force of the electromagnet 530 is disconnected, and the drop hammer 550 is released. The weightless drop hammer 550 performs free fall motion, and when passing the bottom end of the guide tube 110, the two velocity sensors 730 arranged at intervals will sequentially obtain two impact velocities. The staff can obtain the acceleration of the drop hammer 550 and the corresponding impact load by comparing the two impact velocities, thereby testing the performance of the test piece.

[0058] After that, the power is turned off and the anti-drop pin 133 is unplugged, and the traction rope is slowly released so that it gradually descends and approaches and absorbs the drop hammer 550. Then the traction rope is slowly retracted, the drop hammer 550, the mounting seat 510 and the electromagnet 530 are pulled up, and a suitable position is selected according to the new test height, the positioning sleeve 150 is fine-tuned, the anti-drop sleeve 131 is adjusted to the correct position, the anti-drop pin 133 is inserted, and the drop hammer device 500 is fixed for the next test.

[0059] In summary, the utility model provides a drop hammer impact test device 10, including a guide device 100, a bracket device 300, a drop hammer device 500 and a data acquisition device 700. Among them, the guide device 100 includes a guide tube 110 extending along the vertical direction; the bracket device 300 is connected to the outer wall of the guide tube 110, and the guide tube 110 is placed vertically; the drop hammer device 500 can be movably accommodated in the inner cavity of the guide tube 110; the data acquisition device 700 is arranged at one end of the guide tube 110 close to the ground, and is used to test the impact speed of the drop hammer device 500. Based on the setting of the above-mentioned guide tube 110, the path of the drop hammer device 500 during the falling process is limited, so that its deviation affecting the test results is avoided, the feasibility and accuracy of the test are improved, and the personal safety of the operator is also guaranteed.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drop weight impact test device, characterized in that: The invention comprises a guide device (100), a bracket device (300), a drop hammer device (500) and a data acquisition device (700); the guide device (100) comprises a guide tube (110) extending in a vertical direction; the bracket device (300) is connected to the outer wall of the guide tube (110) and enables the guide tube (110) to be placed vertically; the drop hammer device (500) can be movably accommodated in the inner cavity of the guide tube (110); the data acquisition device (700) is arranged at one end of the guide tube (110) close to the ground and is used to test the impact speed of the drop hammer device (500).

2. The drop weight impact testing device according to claim 1, characterized in that: The guide tube (110) is also provided with a through hole (111), and the guide device (100) further comprises a stop sleeve (131) and a stop pin (133), the stop sleeve (131) is slidably connected to the outer wall of the guide tube (110), and is provided with a positioning hole capable of aligning with the through hole (111), and the stop pin (133) can penetrate the positioning hole and the through hole (111) in sequence to support the drop hammer device (500).

3. The drop weight impact testing device according to claim 2, characterized in that: The number of the through holes (111) is plural, and the plurality of through holes (111) are arranged in the guide tube (110) at intervals along the vertical direction.

4. The drop weight impact testing device according to claim 2, characterized in that: The guide device (100) further comprises a positioning sleeve (150) threadedly connected to the outer wall of the guide tube (110), and the positioning sleeve (150) is located below the stop sleeve (131) and abuts against the stop sleeve (131).

5. The drop weight impact testing device according to any one of claims 1 to 4, characterized in that: The support device (300) comprises a main shaft sleeve (310) and at least two oblique support legs (320), and the main shaft sleeve (310) is sleeved on the outer wall of the guide tube (110), and one end of any one of the oblique support legs (320) is connected to the main shaft sleeve (310), and the other end is used to abut against the ground.

6. The drop weight impact testing device according to claim 5, characterized in that: The support device (300) further comprises a ground support foot plate (330) and an adjusting wheel (340), wherein one end of any one of the inclined supporting feet (320) away from the main shaft sleeve (310) is connected to the ground support foot plate (330) via the adjusting wheel (340), and the ground support foot plate (330) is used to support the ground.

7. The drop weight impact testing device according to claim 6, characterized in that: A universal adjustment foot cup (331) is provided on the side of the ground-supporting foot plate (330) away from the ground, and the adjustment wheel (340) is provided with a long bolt (341) matched with the universal adjustment foot cup (331).

8. The drop weight impact testing device according to claim 5, characterized in that: The support device (300) further comprises an auxiliary shaft sleeve (350) and a connecting rod (360), wherein the auxiliary shaft sleeve (350) is sleeved on the outer wall of the guide tube (110), one end of the connecting rod (360) is connected to the auxiliary shaft sleeve (350), and the other end is slidably connected to the oblique support foot (320), and the connecting rod (360) corresponds one to one to the oblique support foot (320).

9. The drop weight impact testing device according to any one of claims 1 to 4, characterized in that: The drop hammer device (500) comprises a mounting seat (510), an electromagnet (530) and a drop hammer (550) which are arranged in sequence from top to bottom, the mounting seat (510) is slidably connected to the inner wall of the guide tube (110), the mounting seat (510) is fixedly connected to the electromagnet (530), and the electromagnet (530) is magnetically connected to the drop hammer (550).

10. The drop weight impact testing device according to any one of claims 1 to 4, characterized in that: The data acquisition device (700) comprises a fixing seat (710) and two speed sensors (730), wherein the fixing seat (710) is sleeved on the outer wall of the guide tube (110), and the two speed sensors (730) are arranged on the fixing seat (710) at intervals along the vertical direction, and the speed sensors (730) are used to test the impact speed of the drop hammer device (500).

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