A portable replaceable impact head for automobile drop hammer test

Abstract

The utility model relates to the technical field of automobile drop hammer test equipment, disclose a portable replaceable impact head for automobile drop hammer test, including the drop hammer testing machine body for carrying out drop hammer test to automobile, the drop hammer testing machine body is installed with the impact head of convenient replacement, the outside of drop hammer testing machine body is equipped with the protection assembly for blocking the protection assembly of splashing spare part in drop hammer test, protection assembly passes through the cooperation of first protection ring, second protection ring and protection net, can effectively block the spare part of splashing in test, reduce the security risk, guarantee the safety of operating personnel and surrounding equipment, drive assembly adopts the transmission structure of servo motor cooperation gear and synchronous belt, can realize the stable lifting of protection assembly, and four drive assemblies synchronous operation, ensure that protection assembly keeps horizontal in the process of lifting, the stability and reliability of device have been improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile drop hammer test equipment, and in particular to a convenient replaceable impact head for automobile drop hammer testing. Background Technology

[0002] Currently, the portable replaceable impact head for automotive drop hammer testing is an important component of the drop hammer impact testing machine. It is the part that contacts the object being tested and applies the impact. Its shape and material vary depending on different testing requirements. The portable replaceable impact head allows for quick replacement of impact heads of different specifications to meet diverse testing needs. For example, the drop hammer impact testing machine from Beijing Guan Test Instruments Co., Ltd. uses quick-change connectors to install the self-identifying hammer head on the frame. This method allows for quick connection or separation of the impact head from the frame, improving replacement efficiency.

[0003] Although many drop hammer test equipment are equipped with fixed guardrails to prevent parts from being impacted and splashed during the test, which could cause safety accidents, when loading large car bumpers for drop hammer tests, operators have to squeeze through the gaps in the guardrails and move the bumpers to the designated positions with great difficulty. During this process, they not only have to avoid collisions and damage to the bumpers with the guardrails, but also have to precisely adjust their angles and positions. The whole process is cumbersome and time-consuming, which seriously affects the efficiency of the test. Furthermore, when it is necessary to maintain or clean the test equipment, or replace various fixtures and tooling required for the test, the fixed guardrails also become an obstacle. The staff have to spend extra time, or even use tools to partially remove the guardrails in order to obtain enough operating space. After completing the corresponding work, they have to reinstall them, making the whole process complicated. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a convenient replaceable impact head for automobile drop hammer testing.

[0005] This utility model is achieved using the following technical solution: a convenient replaceable impact head for automobile drop hammer testing, comprising a drop hammer testing machine body for conducting drop hammer tests on automobiles, an easily replaceable impact head installed on the drop hammer testing machine body, a protective component for blocking splashed parts during the drop hammer test being sleeved on the outside of the drop hammer testing machine body, and a drive component for raising and lowering the protective component during the drop hammer test being provided at each of the four corners of the protective component, the protective component including a first protective ring sleeved on the drop hammer testing machine body, a second protective ring provided on the top of the first protective ring, and a protective net fixedly installed between the first protective ring and the second protective ring.

[0006] Through the above technical solution, the protective component can be enclosed outside the drop hammer test machine body during the drop hammer test, using the protective net to block the flying parts and reduce safety risks; the drive component can drive the protective component to rise and fall, and the protection range can be adjusted according to the test requirements, without affecting the replacement of the impact head and the test operation; the impact head adopts the existing easy-to-replace installation method, which solves the problem of the cumbersome replacement of traditional impact heads.

[0007] As a further improvement to the above scheme, both the first and second protective rings are designed in an octagonal shape.

[0008] Through the above technical solution, the first and second protective rings with the rim shape can be adapted to the shape of the drop hammer test machine body, ensuring that the protective components are stably fitted on the outside of the drop hammer test machine body, while reserving enough space for the impact action of the drop hammer test to avoid interference with the test process.

[0009] As a further improvement to the above solution, the drive assembly includes a first fixing plate fixedly installed at one corner of the first protective ring, a second fixing plate fixedly installed at one corner of the second protective ring, the second fixing plate being located directly above the first fixing plate, and a threaded rod rotatably installed on the top of the first fixing plate, the top end of the threaded rod threaded upward through the second fixing plate and fixedly installed with a limiting piece.

[0010] With the above technical solution, when the threaded rod rotates, since it is threadedly connected to the second fixed plate and the first fixed plate is fixed to the first protective ring, the rotation of the threaded rod will be converted into the second fixed plate moving along the axial direction of the threaded rod, thereby driving the second protective ring to rise and fall, realizing the adjustment of the height of the protection component; the limiting plate can prevent the second fixed plate from detaching from the top of the threaded rod, ensuring the stability of the drive component operation.

[0011] As a further improvement to the above solution, a first drive gear is fixedly sleeved at the bottom end of each threaded rod, and a toothed synchronous belt for synchronous transmission is sleeved on the multiple first drive gears.

[0012] Through the above technical solution, the toothed synchronous belt can connect multiple first drive gears into a transmission unit. When one of the first drive gears rotates, the toothed synchronous belt can drive all the first drive gears to rotate synchronously, thereby causing the threaded rods of the four drive components to rotate synchronously, ensuring that the second protective ring remains horizontal during the lifting process and preventing the protective components from tilting.

[0013] As a further improvement to the above solution, a first connecting plate is fixedly installed on one side of the first protective ring, and a second connecting plate arranged in an "L" shape is fixedly installed on the top of the first connecting plate. A servo motor with its output axis pointing downwards is fixedly installed at the inner right angle of the second connecting plate. A second drive gear is fixedly installed on the output shaft of the servo motor. The second drive gear meshes with the inner surface of the toothed synchronous belt. Two limiting posts are fixedly installed on the top of the first connecting plate. The two limiting posts are symmetrically located on both sides of the second drive gear and are in contact with the outer surface of the toothed synchronous belt. A limiting plate for limiting the offset of the toothed synchronous belt is fixedly installed on the top of each of the first and second drive gears.

[0014] Through the above technical solution, the servo motor provides power to the drive component. When its output shaft rotates, it drives the second drive gear to rotate. The second drive gear drives the toothed synchronous belt to rotate through meshing with the toothed synchronous belt. The limiting post restricts the toothed synchronous belt to prevent it from loosening or shifting during operation. The limiting plate can limit the vertical displacement of the toothed synchronous belt to prevent it from falling off the first drive gear and the second drive gear, thus ensuring the stable operation of the transmission system.

[0015] As a further improvement to the above solution, baffles are symmetrically arranged on both sides of each of the first connecting plates. Each baffle is fixedly installed with the first protective ring, and the top of each baffle extends to one side of the second protective ring and fits against the second protective ring to prevent the protective net from being caught in the threaded rod and the first drive gear.

[0016] Through the above technical solution, the baffle can form an isolation between the protective net and the threaded rod and the first drive gear, preventing the protective net from being caught in the rotating threaded rod or the first drive gear during the lifting and lowering of the second protective ring. This not only protects the integrity of the protective net, but also ensures the normal operation of the drive components.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model's protective component, through the cooperation of a first protective ring, a second protective ring, and a protective net, can effectively block splashed parts during the test, reduce safety hazards, and ensure the safety of operators and surrounding equipment. The drive component adopts a servo motor combined with a gear and synchronous belt transmission structure, which can realize the stable lifting and lowering of the protective component. Moreover, the four drive components operate synchronously to ensure that the protective component remains horizontal during the lifting and lowering process, thereby improving the stability and reliability of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention with protective components; Figure 3 This is a schematic diagram of the structure of the present invention with a drive component.

[0019] Explanation of key symbols: 1. Drop hammer tester body; 2. Impact head; 301. First protective ring; 302. Second protective ring; 303. Protective net; 401. First fixing plate; 402. Second fixing plate; 403. Threaded rod; 404. Limiting plate; 5. First drive gear; 6. Toothed synchronous belt; 7. First connecting plate; 8. Second connecting plate; 9. Servo motor; 10. Second drive gear; 11. Limiting post; 12. Limiting plate; 13. Baffle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Please combine Figures 1-3 This embodiment provides a convenient replaceable impact head for a car drop hammer test, including a drop hammer test machine body 1 for conducting drop hammer tests on cars. An easily replaceable impact head 2 is installed on the drop hammer test machine body 1. A protective component for blocking splashed parts during the drop hammer test is sleeved on the outside of the drop hammer test machine body 1. Each of the four corners of the protective component is provided with a drive component that drives the protective component to rise and fall during the drop hammer test. The protective component includes a first protective ring 301 sleeved on the drop hammer test machine body 1. A second protective ring 302 is provided on the top of the first protective ring 301. A protective net 303 is fixedly installed between the first protective ring 301 and the second protective ring 302.

[0022] The protective component can surround the outside of the drop hammer test machine body 1 during the drop hammer test, using the protective net 303 to block the splashing parts and reduce safety risks; the drive component can drive the protective component to rise and fall, and the protection range can be adjusted according to the test requirements, without affecting the replacement of the impact head 2 and the test operation; the impact head 2 adopts the existing easy-to-replace installation method, which solves the problem of the cumbersome replacement of the traditional impact head 2.

[0023] Both the first protective ring 301 and the second protective ring 302 are designed in an octagonal shape.

[0024] The first protective ring 301 and the second protective ring 302 with the mouth shape can be adapted to the shape of the drop hammer test machine body 1, ensuring that the protective components are stably fitted on the outside of the drop hammer test machine body 1, while reserving enough space for the impact action of the drop hammer test to avoid interference with the test process.

[0025] The drive assembly includes a first fixing plate 401 fixedly installed at one corner of the first protective ring 301, and a second fixing plate 402 fixedly installed at one corner of the second protective ring 302. The second fixing plate 402 is located directly above the first fixing plate 401. A threaded rod 403 is rotatably installed on the top of the first fixing plate 401. The top end of the threaded rod 403 is threaded upward through the second fixing plate 402 and a limiting piece 404 is fixedly installed thereon.

[0026] When the threaded rod 403 rotates, since it is threadedly connected to the second fixed plate 402 and the first fixed plate 401 is fixed to the first protective ring 301, the rotation of the threaded rod 403 will be converted into the axial movement of the second fixed plate 402 along the threaded rod 403, thereby driving the second protective ring 302 to rise and fall, realizing the adjustment of the height of the protection component; the limiting piece 404 can prevent the second fixed plate 402 from disengaging from the top of the threaded rod 403, ensuring the stability of the drive component operation.

[0027] Each threaded rod 403 has a first drive gear 5 fixedly fitted at its bottom end, and toothed synchronous belts 6 for synchronous transmission are fitted on the multiple first drive gears 5.

[0028] The toothed synchronous belt 6 can connect multiple first drive gears 5 into a transmission unit. When one of the first drive gears 5 rotates, the toothed synchronous belt 6 can drive all the first drive gears 5 to rotate synchronously, thereby causing the threaded rods 403 of the four drive components to rotate synchronously, ensuring that the second protective ring 302 remains horizontal during the lifting process and preventing the protective components from tilting.

[0029] A first connecting plate 7 is fixedly installed on one side of the first protective ring 301. A second connecting plate 8 arranged in an "L" shape is fixedly installed on the top of the first connecting plate 7. A servo motor 9 with its output axis pointing downward is fixedly installed at the inner right angle of the second connecting plate 8. A second drive gear 10 is fixedly installed on the output shaft of the servo motor 9. The second drive gear 10 meshes with the inner surface of the toothed synchronous belt 6. Two limiting posts 11 are fixedly installed on the top of the first connecting plate 7. The two limiting posts 11 are symmetrically located on both sides of the second drive gear 10 and are in contact with the outer surface of the toothed synchronous belt 6. A limiting plate 12 for limiting the offset of the toothed synchronous belt 6 is fixedly installed on the top of each first drive gear 5 and second drive gear 10.

[0030] The servo motor 9 provides power to the drive assembly. When its output shaft rotates, it drives the second drive gear 10 to rotate. The second drive gear 10 drives the toothed synchronous belt 6 to rotate through meshing with the toothed synchronous belt 6. The limiting post 11 restricts the toothed synchronous belt 6 to prevent it from loosening or shifting during operation. The limiting plate 12 can limit the vertical displacement of the toothed synchronous belt 6 to prevent it from falling off the first drive gear 5 and the second drive gear 10, thus ensuring the stable operation of the transmission system.

[0031] Each first connecting plate 7 has a baffle 13 symmetrically arranged on both sides. Each baffle 13 is fixedly installed with the first protective ring 301. The top of each baffle 13 extends to one side of the second protective ring 302 and fits against the second protective ring 302 to prevent the protective net 303 from being caught in the threaded rod 403 and the first drive gear 5.

[0032] The baffle 13 can form an isolation between the protective net 303 and the threaded rod 403 and the first drive gear 5, so as to prevent the protective net 303 from being caught in the rotating threaded rod 403 or the first drive gear 5 during the lifting and lowering of the second protective ring 302. This protects the integrity of the protective net 303 and ensures the normal operation of the drive assembly.

[0033] The implementation principle of a convenient replaceable impact head for automobile drop hammer testing in this application embodiment is as follows: When it is necessary to replace the impact head 2, the impact head 2 installed on the main body 1 of the drop hammer testing machine is directly disassembled and installed. This is a very mature existing technology. Some quick-connect couplings are used to install the self-identifying hammer head on the frame. This method can quickly connect or separate the impact head 2 from the frame, improving the replacement efficiency. There is no need to disassemble the protection components and drive components. The operation is convenient and the replacement of the impact head 2 can be completed quickly to adapt to different drop hammer testing requirements.

[0034] Then start the servo motor 9. The output shaft of the servo motor 9 starts to rotate. Since the servo motor 9 is fixed at the inner right angle of the second connecting plate 8 and the output shaft is set downward, the output shaft will drive the second drive gear 10 fixed at its end to rotate synchronously. The second drive gear 10 meshes with the inner surface of the toothed synchronous belt 6. Under the rotation of the second drive gear 10, the toothed synchronous belt 6 starts to run. At this time, the two limiting posts 11 at the top of the first connecting plate 7 are symmetrically attached to the outer surface of the toothed synchronous belt 6, which plays a limiting and supporting role for the toothed synchronous belt 6. They also increase the meshing amount between the second drive gear 10 and the toothed synchronous belt 6, preventing it from becoming loose or shifting during operation. At the same time, the limiting plates 12 at the top of the first drive gear 5 and the second drive gear 10 restrict the vertical displacement of the toothed synchronous belt 6, preventing it from falling off the gears. When the toothed synchronous belt 6 is running, it will drive the four first drive gears 5 sleeved on it to rotate synchronously. The four first drive gears 5 are respectively fixed at the bottom end of the four threaded rods 403, so the four threaded rods 403 will rotate synchronously with the corresponding first drive gear 5. The bottom end of the threaded rod 403 is rotatably mounted on the top of the first fixed plate 401, and the first fixed plate 401 is fixed to one corner of the first protective ring 301. Therefore, the threaded rod 403 can only rotate on its own and cannot move axially. Since the top end of the threaded rod 403 is threaded through the second fixed plate 402 fixed to one corner of the second protective ring 302, when the threaded rod 403 rotates, the second fixed plate 402 will move up and down along the axial direction of the threaded rod 403 under the action of the thread. Four second fixing plates 402 are respectively fixed at the four corners of the second protective ring 302, and four threaded rods 403 rotate synchronously. Therefore, the four second fixing plates 402 will drive the second protective ring 302 to move up and down in a horizontal state. When the second protective ring 302 moves, it will drive the protective net 303, which is fixedly connected to it and the first protective ring 301, to extend or retract synchronously, thereby adjusting the overall height of the protective assembly. At the same time, one side of the baffle 13 is attached to one side of the second protective ring 302, and always blocks the protective net 303 between the threaded rods 403 and the first drive gear 5, preventing the protective net 303 from being caught in the rotating parts. Once the protection components are adjusted to the appropriate height, the servo motor 9 is turned off, the second drive gear 10 stops rotating, the toothed synchronous belt 6 and the first drive gear 5 stop operating, the threaded rod 403 stops rotating, and the second fixing plate 402 is fixed to the threaded rod 403 under the self-locking action of the thread, thereby keeping the second protective ring 302 and the protective net 303 at the current height, thus completing the position fixing of the protection components.

[0035] After replacing the impact head 2 and adjusting the height of the protective components, start the drop hammer test machine body 1. The drop hammer test machine body 1 drives the impact head 2 to complete the drop hammer impact test on the automotive parts. During the test, the flying fragments or parts generated by the impact on the automotive parts will be blocked by the protective net 303 between the first protective ring 301 and the second protective ring 302, preventing them from flying to the outside and causing safety accidents or damaging the equipment. After the test, the servo motor 9 can be started again to lower the protective components to the lowest position, which is convenient for cleaning the parts after the test and subsequent operations.

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A convenient replaceable impact head for a drop hammer test of an automobile, comprising a drop hammer test machine body (1) for performing drop hammer tests on automobiles, wherein an easily replaceable impact head (2) is mounted on the drop hammer test machine body (1), characterized in that, The body (1) of the drop hammer test machine is covered with a protective component for blocking splashing parts during the drop hammer test. Each of the four corners of the protective component is provided with a drive component that drives the protective component to move up and down during the drop hammer test. The protective component includes a first protective ring (301) covered on the body (1) of the drop hammer test machine. A second protective ring (302) is provided on the top of the first protective ring (301). A protective net (303) is fixedly installed between the first protective ring (301) and the second protective ring (302).

2. The portable replaceable impact head for automobile drop hammer testing as described in claim 1, characterized in that, Both the first protective ring (301) and the second protective ring (302) are shaped like an octagon.

3. The portable replaceable impact head for automobile drop hammer testing as described in claim 1, characterized in that, The drive assembly includes a first fixing plate (401) fixedly installed at one corner of the first protective ring (301), and a second fixing plate (402) fixedly installed at one corner of the second protective ring (302). The second fixing plate (402) is located directly above the first fixing plate (401). A threaded rod (403) is rotatably installed on the top of the first fixing plate (401). The top end of the threaded rod (403) is threaded upward through the second fixing plate (402) and fixedly installed with a limiting piece (404).

4. The portable replaceable impact head for automobile drop hammer testing as described in claim 3, characterized in that, Each of the threaded rods (403) is fixedly fitted with a first drive gear (5) at its bottom end, and a toothed synchronous belt (6) for synchronous transmission is fitted on the multiple first drive gears (5).

5. A portable, replaceable impact head for automobile drop hammer testing as described in claim 4, characterized in that, A first connecting plate (7) is fixedly installed on one side of the first protective ring (301). A second connecting plate (8) in an "L" shape is fixedly installed on the top of the first connecting plate (7). A servo motor (9) with the output axis pointing downward is fixedly installed at the inner right angle of the second connecting plate (8). A second drive gear (10) is fixedly installed on the output shaft of the servo motor (9). The second drive gear (10) meshes with the inner surface of the toothed synchronous belt (6). Two limiting posts (11) are fixedly installed on the top of the first connecting plate (7). The two limiting posts (11) are symmetrically located on both sides of the second drive gear (10) and fit against the outer surface of the toothed synchronous belt (6). A limiting plate (12) for limiting the offset of the toothed synchronous belt (6) is fixedly installed on the top of each of the first drive gear (5) and the second drive gear (10).

6. A portable, replaceable impact head for automobile drop hammer testing as described in claim 5, characterized in that, Each of the first connecting plates (7) is symmetrically provided with baffles (13) on both sides. Each baffle (13) is fixedly installed with the first protective ring (301). The top of each baffle (13) extends to one side of the second protective ring (302) and fits against the second protective ring (302) to prevent the protective net (303) from being caught in the threaded rod (403) and the first drive gear (5).

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