Impact test device

Abstract

The utility model relates to an impact test device. The impact test device comprises a base, an impact part and a test bed, the base is provided with a slideway; the test bench is arranged on the base and is used for mounting a to-be-tested component; the impact part is slidably arranged on the slide way and can slide along the slide way to impact the to-be-tested component. According to the impact test device, test verification can be carried out under the condition that a whole vehicle is lacked in the early development stage, the part design verification stage is preposed, whether the impact performance of the part meets the preset requirement or not can be verified through the impact test device, risks can be fully exposed, sufficient rectification time is reserved for product optimization, and the production efficiency is improved. The passing rate of later vehicle performance verification is improved, and the vehicle performance test efficiency and safety are improved.

Description

Technical Field

[0001] The present application relates to the technical field of impact testing, and in particular to an impact testing device. Background Art

[0002] The front suspension of a car is a key component of the vehicle's suspension system. It undertakes important tasks such as supporting the vehicle body, absorbing road irregularities, and maintaining vehicle stability. However, driver's misoperation may cause the vehicle to be hit and the suspension system to be damaged, thus affecting driving safety. In order to better verify the safety performance of the suspension system, it is necessary to conduct an impact test. In the existing technology, the whole vehicle needs to be assembled, and the driver drives the vehicle to drive it to the impact wall at a certain speed to test the safety performance of the suspension system. However, in the early development process, in the absence of a complete vehicle, it is impossible to conduct tests, which is not conducive to the design verification of components such as the front suspension. The pass rate of the whole vehicle verification is low, resulting in low efficiency in the research and development stage.

[0003] At the same time, during the test, the vehicle needs to be driven manually, but at this time, the safety performance of each component has not been verified, resulting in a higher risk for the driver.

[0004] Therefore, how to conduct impact performance tests on automotive components to facilitate component design verification and improve R&D efficiency and safety is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The purpose of this application is to provide an impact test device that can perform individual impact tests on automobile parts, which is beneficial to the design verification of parts and effectively improves R&D efficiency and safety.

[0006] In order to solve the above technical problems, the present application provides an impact testing device, including a base, an impact part and a test bench; the base is provided with a slide; the test bench is arranged on the base and is used to install the component to be tested; the impact part is slidably arranged on the slide and can slide along the slide to impact the component to be tested.

[0007] During an impact test, the test bench is fixed to the base, and the component under test is mounted on the test bench. The component and base are positioned relative to each other, and the impact part slides along a slideway. During this sliding process, its speed increases, ultimately impacting the component under test with a predetermined impact load. The test results are then compared with simulation results, and simulation parameters are adjusted to provide guidance for finite element modeling of the component under test. The test results can also be used to study the failure chain sequence of the component under test.

[0008] The component to be tested is a part or combination of parts of the entire vehicle. The component to be tested is mounted on the test bench and fixed in position without moving. The impact part moves relative to the component to be tested and impacts the component to be tested with a preset impact load, thus simulating the movement of the entire vehicle relative to the impact object under actual use conditions to achieve an impact scenario. The impact test device can perform impact tests on a single component or combination of components of the entire vehicle. It can conduct test verification in the absence of a complete vehicle in the early stages of development, realizing the advance of the component design verification stage. The impact test device can verify whether the impact performance of the component meets the preset requirements and fully expose risks, reserving sufficient rectification time for product optimization, improving the pass rate of the subsequent vehicle performance verification, and improving the efficiency of vehicle performance testing.

[0009] Compared with the prior art in which impact tests are conducted after the entire vehicle is assembled, the impact test device provided in the present application has controllable impact loads when conducting impact performance tests on the components to be tested, can accurately verify various scenarios, and the results are more accurate. Moreover, during the test, there is no need for manual driving of the vehicle to move for testing, which effectively improves safety.

[0010] The impact test device also features a simple overall structure, making it easy to disassemble and assemble its components during subsequent maintenance and repair. The components are preferably made of steel, resulting in excellent structural stability, high strength, long service life, and low cost, making it suitable for mass production. Furthermore, the impact test device is reusable, offering high utilization rates and effectively reducing testing costs.

[0011] Optionally, the test bench is provided with an arc-shaped mounting portion, the arc-shaped mounting portion is a T-shaped slot or a mounting hole, the arc-shaped mounting portion is slidably provided with a mounting bolt, and the test bench is fixed to the component to be tested by the mounting bolt.

[0012] Optionally, the slide includes a slope section and a horizontal section, the slope section includes a first end and a second end arranged in opposite directions, the height of the first end is higher than the height of the second end, and the horizontal section is connected to the second end; the test bench is arranged on the side of the base facing the horizontal section.

[0013] Optionally, a traction portion is further included, which is detachably connected to the impact portion and is used to drive the impact portion to slide along the slideway toward one side of the first end portion.

[0014] Optionally, the traction part includes a traction motor, a traction wheel, a traction rope and a connecting piece connected in sequence, one end of the traction rope is wound around the traction wheel, and the other end of the traction rope is connected to the connecting piece. The traction motor is used to drive the traction wheel to rotate, and the connecting piece is detachably connected to the impact part.

[0015] Optionally, the connecting member includes a solenoid valve traction hook, which has a power-on state and a power-off state. The solenoid valve traction hook is connected to the impact part in the power-on state, and is disconnected from the impact part in the power-off state.

[0016] Optionally, the connecting member is slidably arranged on the slideway.

[0017] Optionally, the slideway includes two slide grooves arranged in parallel, and the impact part includes two rows of running wheels, and the two rows of running wheels roll along the two slide grooves respectively and correspondingly.

[0018] Optionally, a load sensor is provided on the end surface of the impact portion facing the test bench.

[0019] Optionally, the impact portion includes a placement area, and a counterweight is placed in the placement area.

[0020] Optionally, the impact portion includes a main body and an impact head, and the impact head is detachably connected to the main body.

[0021] Optionally, the main body is provided with a plurality of mounting points for mounting the impact head at intervals along the height direction.

[0022] Optionally, it further includes a first buffer portion and a trigger member, wherein the trigger member is provided on one end surface of the impact portion facing the test bench, and the impact portion impacts the component to be tested to make the trigger member reach a trigger state; the first buffer portion is provided on the base and is located on the same side of the impact portion as the test bench, and the first buffer portion includes a first driving member and a first buffer member. In the triggered state, the first driving member is used to drive the first buffer member to move to abut against the impact portion, forming a preset gap between the impact portion and the component to be tested.

[0023] Optionally, a second buffer portion is further included, and the first buffer portion and the second buffer portion are spaced apart along the extension direction of the slide, and the second buffer portion includes a second driving member and a second buffer member. In a triggered state, the second driving member is used to drive the second buffer member to move to the side of the impact portion away from the first buffer member, and a buffer zone is formed between the first buffer member and the second buffer member, and the impact portion is located in the buffer zone.

[0024] Optionally, a photographing unit is further included, wherein a lens of the photographing unit is directed toward the component to be tested installed on the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the impact test device provided in the embodiment of the present application;

[0026] Figure 2 It is a structural schematic diagram of the impact part of the impact test device;

[0027] Figure 3 It is a structural diagram of the connecting parts of the traction part;

[0028] Figure 4 is a schematic structural diagram of the first buffer portion of the impact test device;

[0029] Figure 5 1 is a schematic diagram of the structure of the first buffer portion in different states;

[0030] Figure 6 It is a schematic diagram of the structure of the rear suspension during the impact test.

[0031] Attachment Figures 1-6 In the figure, the reference numerals are described as follows:

[0032] 1 base, 11 slope beam, 12 support beam;

[0033] 2 slideway, 21 slope section, 211 limiter, 22 horizontal section;

[0034] 3 impact part, 31 travel wheel, 32 main body, 33 impact head, 34 counterweight area, 35 counterweight block, 36 hanging hole, 37 elastic fastening member;

[0035] 4 test benches, 41 fixed frames;

[0036] 5 traction part, 51 traction motor, 52 traction wheel, 53 traction rope, 54 connecting piece, 541 solenoid valve traction hook, 542 roller;

[0037] 6 first buffer part, 61 first driving member, 62 first buffer member, 63 first buffer seat, 64 first action member, 65 first transmission part, 66 first connecting part;

[0038] 7 rear suspension. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The front suspension of an automobile is a key component of the vehicle's suspension system, fulfilling crucial tasks such as supporting the vehicle body, absorbing road irregularities, and maintaining vehicle stability. Existing technologies require complete vehicle assembly and impact testing to verify the impact performance of various vehicle components, such as the front and rear suspensions, and doors. This is costly and inefficient.

[0041] The embodiment of the present application provides an impact test device that can perform individual impact tests on components to be tested (such as front suspension, rear suspension, doors, etc.) according to design requirements. There is no need to assemble the entire vehicle, which is low-cost and highly efficient. In the early stage of development, when there is no entire vehicle, individual impact tests can be performed on components to verify whether the impact performance of the components to be tested meets the preset requirements, thereby reserving sufficient rectification time for product optimization and ensuring a one-time pass rate in the vehicle verification stage.

[0042] Specifically, such as Figure 1 As shown, the impact test device includes a base 1, an impact part 3 and a test bench 4, wherein the base 1 is provided with a slide 2, the impact part 3 is provided on the slide 2 and can slide along the slide 2, the test bench 4 is provided on the base 1 and is used to install the component to be tested, and the impact part 3 can slide along the slide 2 to impact the component to be tested installed on the test bench 4.

[0043] During the impact test, the test bench 4 is fixed to the base 1, and the component to be tested is fixedly mounted on the test bench 4. Figure 6 As shown, when the component to be tested is the rear suspension 7, the test bench 4 is further provided with a fixing frame 41 for fixing the rear suspension 7. There are two fixing frames 41, which are arranged at intervals. The rear suspension 7 is fixed to the two fixing frames 41 respectively, and the impact part 3 can perform an impact test on the rear suspension 7 along the position between the two fixing frames 41.

[0044] After the component under test is secured to the test bench 4, its position relative to the base 1 is fixed. The impact portion 3 is then able to slide along the slideway 2, increasing in speed as it slides, ultimately impacting the component under test with a predetermined impact load. The test results are then compared with the simulation results, and simulation parameters are adjusted to provide guidance for finite element modeling of the component under test. The test results can also be used to study the failure chain sequence of the component under test.

[0045] The component to be tested is a part or combination of parts of the entire vehicle. The component to be tested is mounted on the test bench 4 and fixed in position without movement. The impact portion 3 moves relative to the component to be tested and impacts the component to be tested with a preset impact load, thereby simulating the movement of the entire vehicle relative to the impact object under actual use conditions to achieve an impact scenario. The impact test device can perform impact tests on a single component or combination of components of the entire vehicle. It can conduct test verification in the absence of a complete vehicle in the early stages of development, thus advancing the component design verification stage. The impact test device can verify whether the impact performance of the component meets the preset requirements and fully expose risks, reserving sufficient rectification time for product optimization, improving the pass rate of the subsequent vehicle performance verification, and enhancing the efficiency of vehicle performance testing.

[0046] Compared with the prior art in which impact tests are conducted after the entire vehicle is assembled, the impact test device provided in this embodiment has a controllable impact load when conducting impact performance tests on the components to be tested, can accurately verify various scenarios, and the results are more accurate. In addition, during the test, there is no need for manual driving of the vehicle to move for testing, which effectively improves safety.

[0047] The impact test device also features a simple overall structure, making it easy to disassemble and assemble its components during subsequent maintenance and repair. The components are preferably made of steel, resulting in excellent structural stability, high strength, long service life, and low cost, making it suitable for mass production. Furthermore, the impact test device is reusable, offering high utilization rates and effectively reducing testing costs.

[0048] The test bench 4 is provided with an arc-shaped mounting portion, which can be a T-slot (i.e., a slot structure with a T-shaped cross-section) or a mounting hole provided on the test bench 4. The arc-shaped mounting portion is provided with mounting bolts, which can slide along the arc-shaped mounting portion. The test bench 4 is fixed to the component to be tested via the mounting bolts. In this embodiment, there is no restriction on the arrangement and number of the arc-shaped mounting portions. Taking the arc-shaped mounting portion as an example, the test bench 4 is provided with four T-slots, each of which is concentrically arranged. Each T-slot is provided with a group of mounting bolts, and each group includes at least one mounting bolt, which can be one, two, or more. After the component to be tested is placed on the test bench 4, the component to be tested can be adjusted according to the requirements of the impact test, so that it is rotated around the center of the T-slot to a preset angle and then fixed with the mounting bolts.

[0049] Of course, the number of arc-shaped mounting parts can also be one, that is, an annular groove (T-shaped cross-section) arranged along the circumference, or the number of arc-shaped mounting parts can also be two, three or more, and there is no specific limitation here.

[0050] The bolt head of the mounting bolt can be located in the T-slot and can slide along the T-slot, or a nut can be provided in the T-slot, and the mounting bolt can be passed through the test component and the opening of the T-slot in sequence and fixed with the nut. When the arc-shaped mounting portion is a mounting hole, the mounting bolt can be passed through the mounting hole to achieve fixation.

[0051] With this setting, various actual impact scenarios can be effectively verified by adjusting the impact angle of the test component. The results are also more accurate, which is conducive to studying the impact performance of the test component at different angles and has good flexibility.

[0052] Of course, in the present embodiment, the fixed angle between the test platform 4 and the base 1 can also be adjustable, that is, the test platform 4 can be rotated to a preset angle relative to the base 1 and then fixed, so that the impact test of the component to be tested can be performed at different angles. When the angle between the component to be tested and the test platform 4 is adjustable, the adjustment operation is facilitated.

[0053] like Figure 1 As shown, the slide 2 includes a slope section 21 and a horizontal section 22, wherein the slope section 21 is arranged obliquely, and includes a first end and a second end arranged in opposite directions, the height of the first end is higher than the height of the second end, and the horizontal section 22 is connected to the second end. The test bench 4 is provided on the side of the base 1 facing the horizontal section 22. The impact part 3 can enter the horizontal section 22 from the second end when sliding downward along the slope section 21 (towards the side of the second end) and impact the component to be tested installed on the test bench 4.

[0054] Specifically, after the impact portion 3 is placed at a certain height position on the slope section 21, the impact portion 3 can slide toward the second end under the action of its own gravity. During this process, the gravitational potential energy is converted into kinetic energy, and the moving speed of the impact portion 3 gradually increases until it impacts the component to be tested. Specifically, the height of the impact portion 3 on the slope section 21 can be calculated based on the required impact load, and the required impact load is determined based on the safety performance requirements of the component to be tested.

[0055] Of course, in this embodiment, a driving unit can also be provided to drive the impact unit 3 to slide along the slide 2. At this time, the slide 2 can be provided with only a horizontal section 22 without the slope section 21. The driving unit provides power to drive the impact unit 3 to slide along the slide 2 toward the test bench 4, and enables the impact unit 3 to impact the component to be tested with a preset impact load.

[0056] In this embodiment, the provision of the ramp section 21 allows the impact portion 3 to accelerate under its own gravity to meet the impact load requirements, eliminating the need for additional drive components, simplifying the overall structure and reducing costs. The provision of the horizontal section 22 facilitates the assembly and disassembly of the component to be tested.

[0057] like Figure 1 As shown, the base 1 is also provided with a slope beam 11 and a support beam 12, wherein one end of the slope beam 11 is higher than the other end, the slope section 21 is provided on the slope beam 11, and the support beam 12 is supported between the slope beam 11 and the base 1 to ensure the structural stability of the slope beam 11 and simplify the overall structure.

[0058] Further, such as Figure 1As shown, the impact test device also includes a traction portion 5, which is detachably connected to the impact portion 3 and is used to drive the impact portion 3 to slide along the slide 2 toward the first end. In other words, before the impact test, the traction portion 5 provides traction power, causing the impact portion 3 to slide along the slide 2 to a preset height position. During the impact test, the traction portion 5 is disengaged from the impact portion 3, and the impact portion 3 can slide downward along the slope section 21 under the action of gravity and impact the component to be tested. Of course, the operator can also manually slide the impact portion 3 along the slide 2 to the preset height position. The provision of the traction portion 5 can simplify manual operation and improve testing efficiency.

[0059] like Figure 1 As shown, a limiting member 211 is further provided on the top of the slope section 21 for limiting the movement of the impact part 3 to prevent the impact part 3 from being separated from the slideway 2.

[0060] like Figure 1 As shown, the traction part 5 includes a traction motor 51, a traction wheel 52, a traction rope 53 and a connecting piece 54 connected in sequence. One end of the traction rope 53 is wound around the traction wheel 52, and the other end is connected to the connecting piece 54. The traction motor 51 is used to drive the traction wheel 52 to rotate to wind or release the traction rope 53. The connecting piece 54 is detachably connected to the impact part 3.

[0061] Of course, the traction unit 5 can also be configured as a structure including a driving member, a traction rope, a pulley assembly, and a connecting member. The pulley assembly includes multiple pulleys, and the traction rope is wound around each pulley to form a structure similar to an electric hoist. One end of the traction rope is connected to the driving member, and the other end is connected to the connecting member. The structure of the electric hoist is well known to those skilled in the art and will not be described in detail here. The driving member can be a cylinder, a hydraulic cylinder, a motor screw assembly, etc. When the traction unit 5 is configured as a structure including a traction motor 51, a traction wheel 52, a traction rope 53, and a connecting member 54, it is convenient to accurately control the traction position of the impact unit 3.

[0062] In this embodiment, there is no limitation on how to achieve the detachable connection between the connecting member 54 and the impact part 3. Figure 3 As shown, the connecting member 54 includes a solenoid valve traction hook 541, which has a power-on state and a power-off state. The solenoid valve traction hook 541 can be connected to the impact part 3 in the power-on state, and the solenoid valve traction hook 541 can be disconnected from the impact part 3 in the power-off state.

[0063] Specifically, a hanging hole 36 is provided at the end of the impact part 3 away from the test bench 4. When the solenoid valve traction hook 541 is powered on, the hook body can extend and pass through the hanging hole 36 to achieve connection. When the solenoid valve traction hook 541 is powered off, the hook body of the solenoid valve traction hook 541 retracts and disengages from the hanging hole 36. After the traction part 5 pulls the impact part 3 to a preset height, when performing an impact test, the solenoid valve traction hook 541 is powered off, and the traction part 5 slides downward along the slide 2. If the solenoid valve traction hook 541 remains powered on, the impact part 3 is stable at the preset height position.

[0064] Of course, in this embodiment, the connecting member 54 can also be a hook, which is passed through the hanging hole 36 to achieve connection. When performing an impact test, the operator can manually operate to disengage the hook from the hanging hole 36. When the solenoid valve traction hook 541 is passed through the hanging hole 36 to achieve connection with the impact part 3, manual operation can be simplified.

[0065] Furthermore, the connecting member 54 is slidably arranged on the slide 2, that is, the connecting member 54 and the impact part 3 both slide along the slide 2, so that the moving path of the connecting member 54 can be restricted, so that before the impact test is performed, the connecting member 54 slides along the slide 2 and can be directly connected to the impact part 3, without the need for manual operation to connect the solenoid valve traction hook 541 of the connecting member 54 with the hanging interface of the impact part 3, which is very convenient.

[0066] In this embodiment, the slide 2 includes two parallel chute arrangements, and the impact part 3 includes two rows of running wheels 31. The two rows of running wheels 31 are respectively arranged in the two chute arrangements so as to ensure that there is no wheel difference during the sliding of the impact part 3, thereby ensuring the sliding stability. The two rows of running wheels 31 are arranged along the left and right directions of movement of the impact part 3. Each row of running wheels 31 includes at least two running wheels 31 arranged at intervals along the moving direction of the impact part 3. Each row can be specifically as follows: Figure 2 The two running wheels 31 shown may also be three, four or more to ensure movement stability.

[0067] like Figure 2 As shown, the connecting member 54 is also provided with two rows of rollers 542 , and the two rows of rollers 542 roll along the two sliding grooves respectively.

[0068] Of course, the slideway 2 can also be configured as a slide rail structure. To ensure sliding stability, there are two slide rails, which are arranged in parallel. The impact part 3 and the connecting member 54 can be provided with sliders that can slide along the slide rails. The running wheels 31 roll along the slideway 2 to enable the impact part 3 to slide along the slideway 2. While providing a guiding effect for the sliding of the impact part 3 and improving sliding stability, it can also reduce the resistance caused by sliding friction and reduce the power demand of the traction motor 51.

[0069] In this embodiment, a load sensor is provided on one side surface of the impact portion 3 facing the test bench 4, that is, the surface used to impact the component to be tested. The load sensor is used to detect the load at the moment of impact to monitor the accuracy of the test and provide data assurance to ensure the accuracy and effectiveness of the test.

[0070] The impact part 3 also includes a counterweight area 34, which is used to place a counterweight block 35. The counterweight block 35 can be placed directly in the counterweight area 34, or as shown in FIG. Figure 2 As shown, an elastic abutting member 37 is further provided in the counterweight area 34. After the counterweight blocks 35 are stacked and placed in the counterweight area 34, the elastic abutting member 37 can abut against the counterweight blocks 35 from one side, so that the counterweight blocks 35 abut against each other to one side of the counterweight area 34, thereby ensuring the stability of each counterweight block 35 in the counterweight area 34. The specific structure of the elastic abutting member 37 is not limited, such as an abutting block and a spring, the spring is provided between a side wall in the counterweight area 34 and the abutting block, and the abutting block abuts against the surface of the counterweight block 35. Of course, in this embodiment, the abutting member can also be provided as a structure of a cylinder or a hydraulic cylinder, and the provision of the elastic abutting member 37 can simplify the overall structure and reduce costs while ensuring the stability of the counterweight blocks 35 in the counterweight area 34.

[0071] According to the required impact load, the total weight of the counterweight block 35 and the height of the impact part 3 in the slope section 21 can be adjusted. Compared with the solution of meeting the impact load requirements by only adjusting the height of the impact part 3, this setting can reduce the height and length requirements of the slope section 21 and reduce the footprint.

[0072] like Figure 2 As shown, the impact portion 3 includes a main body 32 and an impact head 33. A load sensor is provided on the surface of the impact head 33 facing the test bench 4, and the main body 32 may be provided with the aforementioned counterweight area 34. In this embodiment, the impact head 33 is detachably connected to the main body 32. The impact head 33 can be configured according to the component to be tested and the actual simulated working conditions, so that the width of the impact head 33 (i.e., the dimension along the width direction of the slideway 2) needs to be determined according to the component to be tested. This impact testing device can be used to perform impact tests on different components to be tested. The impact portion 3 only needs to replace the corresponding impact head 33, which is flexible and adaptable, and can effectively reduce costs.

[0073] Specifically, there is no limitation on the connection method between the impact head 33 and the main body 32, and they may be fixed by fasteners or tightened. For different components to be tested, the corresponding test bench 4 can be directly replaced. Alternatively, the test bench 4 can be provided with a fixing device for fixing the component to be tested, and the fixing device and the test bench 4 have the same mounting interface. When the component to be tested is replaced, the corresponding fixing device can be replaced.

[0074] The main body 32 is provided with a plurality of mounting points at intervals along the height direction, and the mounting points are used to install the impact head 33. If the mounting point is a mounting hole, the impact head 33 can be installed by mounting bolts, or if the mounting point is a clamping piece, the impact head 33 can be clamped by the clamping piece to achieve installation. With this arrangement, the height of the impact head 33 is adjustable and can be set according to the specific impact height requirements of the component to be tested, which has good flexibility.

[0075] The impact test device provided in this embodiment further includes a first buffer portion 6 and a trigger member, wherein the trigger member is arranged on one end surface of the impact portion 3 facing the test bench 4. When the impact portion 3 impacts the test part of the component to be tested, the trigger member can reach a trigger state.

[0076] The first buffer portion 6 is provided on the base 1 and is located on the same side of the impact portion 3 as the test bench 4. Figure 4 As shown, the first buffer part 6 includes a first driving member 61 and a first buffer part 62. The first driving member 61 can drive the first buffer part 62 to move. When the trigger member reaches the trigger state, the first driving member 61 drives the first buffer part 62 to move to abut against the impact part 3. At this time, a preset gap is formed between the impact part 3 and the component to be tested, and there is no contact between the two.

[0077] Specifically, in this embodiment, there is no limitation on the specific structure and setting position of the first driving member 61. For example, it can be a driving cylinder (such as a pneumatic cylinder or a hydraulic cylinder). The driving cylinder is provided on the base 1 and is located at the bottom of the test bench 4 facing the impact part 3. The piston rod of the driving cylinder is connected to the first buffer member 62. When the trigger member is in the untriggered state, the driving cylinder is in a retracted state, and the first buffer member 62 does not contact the impact part 3. When the impact part 3 impacts the component to be tested, the trigger member reaches the triggered state, and then the impact part 3 rebounds, specifically moving a certain distance along the slide 2 to the side away from the component to be tested. At the same time, the piston rod of the driving cylinder extends and drives the first buffer member 62 to move to the side of the impact part 3 until it abuts against the impact part 3. The first buffer member 62 can abut the main body 32 of the impact part 3 or the impact head 33, so that a preset gap is formed between the impact part 3 and the component to be tested to avoid further impact between the two. This facilitates accurate judgment of the impact condition of the component to be tested after the preset load impact and avoids interference caused by secondary impact, thereby facilitating the study of impact performance.

[0078] Alternatively, in this embodiment, the first driving member 61 can also be set as a motor and a screw assembly, and the first buffer member 62 can be moved from the side until the first buffer member 62 is located between the impact part 3 and the component to be tested to prevent the two from having a secondary impact.

[0079] Furthermore, the impact test device also includes a second buffer portion, which is spaced apart from the first buffer portion 6 along the extension direction of the slide 2. The second buffer portion includes a second driving member and a second buffer member. The second driving member is used to drive the second buffer member to move. When the trigger member is in the triggered state, the second driving member drives the second buffer member to move, so that the second buffer member can be located on the side of the impact portion 3 away from the first buffer member 62. At this time, a buffer zone is formed between the first buffer member 62 and the second buffer member, and the impact portion 3 is located in the buffer zone, limiting the movement of the buffer portion. When the trigger member is not triggered, the second driving member does not move, and the second buffer member does not affect the movement of the impact portion 3. The specific position of the second buffer member is not restricted.

[0080] like Figure 4 As shown, the first buffer portion 6 also includes a first buffer seat 63, which is fixed to the base 1, and the first driving member 61 is arranged on the first buffer seat 63. The second buffer portion also includes a second buffer seat, which is fixed to the base 1, and the second driving member is arranged on the second buffer seat. The specific structures of the first buffer seat 63 and the second buffer seat are not limited, and the setting of the two can improve the flexibility of the setting position of the driving member.

[0081] The structure of the second driving member can refer to the structure of the first driving member 61 and is not specifically limited here. The first buffer member 62 and the second buffer member can be made of rubber blocks or flexible pads to avoid damage to the impact part 3 when abutting against the impact part 3.

[0082] Further, such as Figure 4 As shown, the first buffer portion 6 further includes a first action member 64, a first transmission portion 65 and a first connection portion 66, wherein the first action member 64 is provided on the first buffer seat 63, the first action member 64 is connected to the first connection portion 66 through the first transmission portion 65, the first driving member 61 and the first buffer member 62 are both installed on the first connection portion 66, the first action member 64 is connected to the trigger member signal, and when the trigger member is not triggered, the first connection portion 66 is located in the first position (as shown in FIG. Figure 5 The first buffer member 62 cannot contact the impact part 3. After the trigger member is triggered, the first action member 64 can act on the first connecting part 66 to the second position (as shown in the blue part) through the first transmission part 65. Figure 5 At this time, the first buffer member 62 can contact the impact portion 3 under the driving action of the first driving member 61.

[0083] That is to say, when the trigger member is triggered, the first action member 64 and the first driving member 61 act simultaneously, so that the first buffer member 62 can abut against the impact part 3, and when the trigger member is not triggered, the first connecting part 66 is in the first position. At this time, the first buffer member 62 can be effectively prevented from contacting the impact part 3, thereby preventing the impact part 3 from interfering with the first buffer part 6 during the process of impacting the component to be tested.

[0084] Specifically, in this embodiment, there is no restriction on the specific structure of the first actuating member 64, which can be a cylinder or a hydraulic cylinder. There is no restriction on the specific structure of the first transmission part 65, which can be a support structure. The first actuating member 64 drives the first connecting part 66 to move along the front-to-back direction of the slide 2 or to rise and fall along the height direction through the support structure. Alternatively, the first transmission part 65 can be configured to include a first hinged section and a second hinged section that are hingedly connected to each other, the end of the first hinged section away from the second hinged section is hinged to the first actuating member 64, and the end of the second hinged section away from the first hinged section is hinged to the first connecting part 66. After the first driving member 61 drives the first connecting section away from the second connecting section, it can drive the first connecting part 66 to move through the action of the first connecting section and the second connecting section, so that the first connecting part 66 changes simultaneously in the height direction and the front-to-back direction to reach the first position and the second position. As for how to specifically set the first hinged section and the second hinged section to achieve the above-mentioned action process, those skilled in the art can use well-known technical means to achieve it, and no specific restriction is made here.

[0085] The second buffer portion includes a second actuating member, a second transmission portion and a second connecting portion. The specific structure can refer to the structure of the first buffer portion 6 described above, and will not be described in detail here.

[0086] The impact testing apparatus may further include a camera unit, the lens of which is directed toward the component under test, mounted on the test bench 4. The camera unit is specifically configured to capture the posture and deformation of the component under test when the impact unit 3 impacts the component under test, thereby facilitating subsequent analysis of the failure chain sequence of the component under test based on the captured results. The specific location of the camera unit is not limited; the camera unit may be mounted on the test bench 4, or a bracket may be provided on the base 1, with the camera unit mounted on the bracket.

[0087] The impact test device may also include a controller, which is respectively connected to the above-mentioned traction motor 51, solenoid valve traction hook 541, load sensor, trigger, first drive member 61, and second drive signal. Specifically, it can be a wired connection or a wireless connection through WiFi, Bluetooth, infrared, etc. The controller can control the solenoid valve traction hook 541 to be powered on and off, and can also control the traction motor 51 to drive the traction rope 53 to drive the impact part 3 to slide along the slide 2. At the same time, the controller can also obtain the impact load through the load sensor, and can display the impact load and other test parameters through the corresponding display device. When the trigger is triggered, the controller can also control the first drive 61 and the second drive to drive. How the specific controller implements the above-mentioned control operation is already a well-known existing technology for those skilled in the art. In order to save space, it will not be repeated here. Through the setting of the controller, full-step in-loop control can be fully realized, manual operation can be simplified, and manual monitoring of the test situation can be facilitated.

[0088] In the description of this application, it should be understood that the terms "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means more than two, unless otherwise specifically defined.

[0090] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0091] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An impact test device, characterized in that: It includes a base (1), an impact portion (3) and a test bench (4); The base (1) is provided with a slideway (2); The test bench (4) is arranged on the base (1) and is used to install the component to be tested; The impact part (3) is slidably arranged on the slideway (2) and can slide along the slideway (2) to impact the component to be tested.

2. The impact testing device according to claim 1, characterized in that: The test bench (4) is provided with an arc-shaped mounting portion, the arc-shaped mounting portion is a T-shaped slot or a mounting hole, the arc-shaped mounting portion is slidably provided with a mounting bolt, and the test bench (4) is fixed to the component to be tested via the mounting bolt.

3. The impact testing device according to claim 1, characterized in that: The slideway (2) comprises a slope section (21) and a horizontal section (22), the slope section (21) comprises a first end and a second end disposed in a direction opposite to each other, the height of the first end is higher than the height of the second end, and the horizontal section (22) is connected to the second end; The test bench (4) is arranged on a side of the base (1) facing the horizontal section (22).

4. The impact testing device according to claim 3, characterized in that: It also includes a traction part (5), which is detachably connected to the impact part (3) and is used to drive the impact part (3) to slide along the slideway (2) toward one side of the first end.

5. The impact testing device according to claim 4, characterized in that: The traction part (5) comprises a traction motor (51), a traction wheel (52), a traction rope (53) and a connecting piece (54) connected in sequence. One end of the traction rope (53) is wound around the traction wheel (52), and the other end of the traction rope (53) is connected to the connecting piece (54). The traction motor (51) is used to drive the traction wheel (52) to rotate. The connecting piece (54) is detachably connected to the impact part (3).

6. The impact testing device according to claim 5, characterized in that: The connecting member (54) comprises a solenoid valve traction hook (541), wherein the solenoid valve traction hook (541) has an energized state and a de-energized state. The solenoid valve traction hook (541) is connected to the impact part (3) in the energized state, and is detached from the impact part (3) in the de-energized state.

7. The impact testing device according to claim 5, characterized in that: The connecting member (54) is slidably arranged on the slideway (2).

8. The impact testing device according to any one of claims 1 to 7, characterized in that: The slideway (2) comprises two slide grooves arranged in parallel, and the impact portion (3) comprises two rows of running wheels (31), and the two rows of running wheels (31) roll along the two slide grooves respectively and correspondingly.

9. The impact testing device according to any one of claims 1 to 7, characterized in that: A load sensor is provided on the end surface of the impact portion (3) facing the test bench (4).

10. The impact testing device according to any one of claims 1 to 7, characterized in that: The impact portion (3) comprises a placement area (34), and a counterweight (35) is placed in the placement area (34).

11. The impact testing device according to any one of claims 1 to 7, characterized in that: The impact portion (3) comprises a main body portion (32) and an impact head (33), and the impact head (33) is detachably connected to the main body portion (32).

12. The impact testing device according to claim 11, characterized in that: The main body (32) is provided with a plurality of installation points for installing the impact head (33) at intervals along the height direction.

13. The impact testing device according to any one of claims 1 to 7, characterized in that: It also includes a first buffer portion (6) and a triggering member, wherein the triggering member is provided on an end surface of the impact portion (3) facing the test bench (4), and the impact portion (3) impacts the component to be tested so that the triggering member reaches a triggering state; The first buffer portion (6) is provided on the base (1) and is located on the same side of the impact portion (3) as the test bench (4). The first buffer portion (6) comprises a first driving member (61) and a first buffer member (62). In a triggered state, the first driving member (61) is used to drive the first buffer member (62) to move to abut against the impact portion (3), thereby forming a preset gap between the impact portion (3) and the component to be tested.

14. The impact testing device according to claim 13, characterized in that: The invention also includes a second buffer portion, wherein the first buffer portion (6) and the second buffer portion are spaced apart along the extension direction of the slideway (2), and the second buffer portion includes a second driving member and a second buffer member. In a triggered state, the second driving member is used to drive the second buffer member to move to a side of the impact portion (3) away from the first buffer member (62), and a buffer zone is formed between the first buffer member (62) and the second buffer member, and the impact portion (3) is located in the buffer zone.

15. The impact testing device according to any one of claims 1 to 7, characterized in that: It also includes a shooting unit, wherein the lens of the shooting unit is directed toward the component to be tested installed on the test bench (4).

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