Dummy chest impact test equipment and method

Abstract

The invention discloses dummy chest impact test equipment and method, and the equipment comprises a platform lifting, translation and rotation device assembly which is used for installing a tested dummy, controlling a platform to translate back and forth in the horizontal direction through a control system, and controlling a rotation platform to rotate through the control system; the synchronous belt transmission impact assembly is used for controlling the rotation speed of a synchronous belt wheel and further controlling the movement speed of a roller assembly on a synchronous belt, and the impact speed of an impact hammer of the impact hammer assembly is controlled through the movement of the roller assembly.

Description

Technical Field

[0001] The invention relates to the technical field of dummy detection and calibration, and in particular to a dummy chest impact test device and method. Background Art

[0002] In the field of automobile safety performance testing, for the safety of personnel, both domestic and foreign countries use humanoid test devices (i.e. dummies) for automobile safety collision tests as test tools, and obtain corresponding response parameters through various sensors built into various parts of the dummies. These data reflect the degree of human body injury during the car collision process, and thus judge the safety performance of the car, while providing a reference for researchers to improve the body structure and optimize the restraint system. In order to obtain accurate and reliable data in automobile collision tests, the dummies must have good biosimulation. In order to test the biosimulation of the dummies, calibration tests and detection tests are often required for the dummies. Most of the existing test benches are integrated structures, generally only the test bench body and the experimental content installed on the test bench. This style of test bench has limited functionality and a large volume, which is not conducive to calibration tests.

[0003] Therefore, it is now necessary to provide a dummy chest impact test device and method that can meet the requirements of small space, light weight and stable transmission. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides a dummy chest impact test device and method which can meet the requirements of small space, light weight and stable transmission.

[0005] First, the present invention provides a dummy chest impact test device, comprising: The platform lifting, translation and rotation device assembly is used to install the dummy under test, and the control system controls the platform to move forward and backward in the horizontal direction, and controls the rotating platform to rotate through the control system; and The synchronous belt drives the impact assembly and the impact hammer assembly. The synchronous belt drives the impact assembly to control the rotation speed of the synchronous belt pulley, thereby controlling the movement speed of the roller assembly on the synchronous belt, and controlling the impact speed of the impact hammer of the impact hammer assembly through the movement of the roller assembly.

[0006] The platform lifting, translation and rotation device assembly includes: a first servo motor, a worm gear reducer, a reducer output shaft, multiple gears, a screw, a screw fixing seat, a screw slider, a rotating shaft, a guide slider, a guide rail, a platform base plate, a lifting bracket, a servo motor, a rack, a platform, a spring, a servo motor, a rotating platform, a platform connecting plate, a first slide rail, a first slide rail slider, a second slider, a second slide rail, a proximity switch and a reducer fixing seat.

[0007] It also includes an outer frame assembly, which includes a rope encoder, a left guide rail, a right guide rail, a left guide rail fixing bracket, a right guide rail fixing bracket, an electric control box, an embedded platform and a sponge pad; wherein the sponge pad and the guide rail slider are connected by screws, the guide rail slider is fixed on the guide rail, the guide rail is fixed to the outer frame by the guide rail fixing bracket, and the electric control box is installed on the frame embedded platform; when the platform lifting, translation and rotation device performs lifting and lowering movement, the rope encoder records the lifting and lowering data of the platform, and the sponge pad performs rising and falling movements along the guide rail according to the recorded lifting and lowering data of the platform.

[0008] The impact hammer assembly includes: a fourth servo motor, an electromagnetic clutch, an input shaft, a sixth gear, a gear fixing seat, a fourth servo motor fixing seat, a seventh gear, a synchronous rotating shaft, a rotating shaft fixing seat, a first left synchronous pulley, a second left synchronous belt, a first right synchronous pulley, a second right synchronous belt, a left slider / pendulum pull rope fixing seat, a right slider / pendulum pull rope fixing seat, a left slide rail, a right slide rail, a proximity switch, a working platform, a pendulum pull rope, a pendulum / impact hammer, an infrared probe, a horizontal platform, an acceleration sensor mounting hole and a synchronous belt fixing seat.

[0009] The synchronous belt drive impact assembly includes: a servo motor, a servo motor base, an electromagnetic clutch, an electromagnetic clutch input shaft, a synchronous pulley, an electromagnetic clutch output shaft, a synchronous belt, a roller assembly, a guide rod, a guide rod support seat, a push rod, a grating scale, a grating, a synchronous gear idler, a synchronous pulley fixing seat, a synchronous gear idler fixing seat, a left guide rail slider, a right guide rail slider, a left guide rail, a right guide rail, a guide rail fixing seat, a proximity switch, an electric push rod assembly, a shock absorbing spring and a shock absorbing spring fixing seat.

[0010] The rolling assembly includes: eight rollers, a synchronous belt, a limit pin, a roller base, a left slider fixing seat, a right slider fixing seat, a torsion spring, a positioning pin, a roller seat, a fixing block, a spring and a pulley; The electric push rod assembly comprises: an electric push rod, a push rod left side fixing frame, a push rod right side fixing frame, a push rod lower side fixing frame, a left side connecting rod, a right side connecting rod and a connecting rod fixing seat.

[0011] Secondly, the present invention also provides a dummy impact test method, comprising: Installing the calibration test dummy Place the dummy that needs to be calibrated on the platform of the platform lifting, translation and rotation device assembly; for the chest impact test, the dummy only needs to be placed on the platform according to the test requirements and does not need to be fixed specifically; Installing the impact hammer Select the impact hammer corresponding to the test dummy to be calibrated and fix it on the pull rope of the impact hammer assembly; use the level installed on the impact hammer to ensure that the installed impact hammer is in a horizontal state; Adjust the impact test area The platform lifting, translation and rotation device assembly can realize the horizontal forward and backward translation and rotation of the platform and the lifting and lowering in the vertical direction; the lifting, translation and rotation of the platform lifting, translation and rotation device assembly are controlled by the control system to realize the precise adjustment of the dummy position, so that the infrared ray emitted by the infrared probe at the center of the impact hammer is directly facing the dummy test part that needs to be impacted; Impact Testing Process At the beginning of the test, the control system controls the motor of the synchronous belt drive impact assembly to provide power to drive the roller assembly to move forward until the impact rod of the roller assembly absorbs the impact hammer; then the control system controls the motor of the impact hammer assembly to provide power to move the slider / pendulum rope fixing seats on the left and right sides backward, and at the same time, the motor of the synchronous belt drive impact assembly causes the impact rod of the roller assembly to absorb the impact hammer and move synchronously backward at the same speed back to the initial position of the roller assembly, and the impact hammer remains in a horizontal state during the backward movement; after the impact rod of the roller assembly absorbs the impact hammer and returns to the initial position of the roller assembly, the control system issues an instruction, and the motors of the synchronous belt drive impact assembly and the impact hammer assembly provide the same power to accelerate the impact hammer forward until the impact speed required by the test is reached, the absorption effect between the impact rod and the impact hammer is disconnected, and the impact hammer impacts the test part of the dummy at the impact speed required by the test in a free state.

[0012] The technical solution of the present invention has the following advantages: The present invention provides an experimental device for completing the impact in the horizontal direction of a dummy calibration device. The device has a simple structure and is easy to operate, and the impact experimental process of the horizontal movement of the dummy is intuitively displayed through experimental data. The servo motor and electromagnetic clutch adopted by the present invention have good controllability, can stably control the impact speed of the impact hammer, effectively ensure the collection results of the experimental data, and have a good control effect on the calibration experiment that requires precise control of variables. The present invention can meet the requirements of small space and light weight and stable transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 is an overall schematic diagram of the impact testing device of the present invention; Figure 2 It is an exploded view of the platform lifting, translation and rotation device assembly of the impact testing equipment of the present invention; Figure 3 A cross-sectional view of a platform lifting, translation and rotation device assembly of the impact testing equipment of the present invention; Figure 4 It is a schematic diagram of the installation of a dummy for side impact of the platform lifting, translating and rotating device of the impact test equipment of the present invention; Figure 5 It is a schematic diagram of the knee impact installation of the platform lifting, translating and rotating device of the impact testing equipment of the present invention; Figure 6 An exploded view of the outer frame assembly of the impact testing device of the present invention; Figure 7 An exploded view of an impact hammer assembly of the impact testing device of the present invention; Figure 8 A front view of an impact hammer assembly of the impact testing device of the present invention; Fig. 9 A cross-sectional view of an impact hammer assembly of an impact testing device of the present invention; Fig.10 An exploded view of a synchronous belt drive impact assembly of the impact testing device of the present invention; Fig.11 Another exploded view of the synchronous belt drive impact assembly of the impact testing device of the present invention; Fig.12 A cross-sectional view of a synchronous belt drive impact assembly of the impact testing device of the present invention; Fig.13 It is a front view of the synchronous belt drive impact assembly of the impact testing device of the present invention; Fig.14 An exploded view of a roller assembly of the impact testing device of the present invention; Fig.15 A perspective view of a roller assembly of an impact testing device of the present invention; Fig.16 A front view of a roller assembly of the impact testing device of the present invention; Fig.17 An exploded view of the electric push rod assembly of the impact testing device of the present invention; Fig.18 It is a front view of the electric push rod assembly of the impact testing device of the present invention; Fig.19 Another overall schematic diagram of the impact testing device of the present invention.

[0015] Figure numerals: 1. Platform lifting translation and rotation device assembly, 1.1-first servo motor, 1.2-worm gear reducer, 1.3-reducer output shaft, 1.4-first gear, 1.5-second gear, 1.6-third gear, 1.7-screw, 1.8-screw fixing seat, 1.9-screw slider, 1.10-rotating shaft, 1.11-guide rail slider, 1.12-guide rail, 1.13-platform bottom plate, 1.14-lift Lowering bracket, 1.15-second servo motor, 1.16-fourth gear, 1.17-fifth gear, 1.18-rack, 1.19-platform, 1.20-spring, 1.21-third servo motor, 1.22-rotating platform, 1.23-platform connecting plate, 1.24-slide rail, 1.25-slide rail slider, 1.26-slide block, 1.27-slide rail, 1.28-proximity switch, 1.29-reducer fixing seat; 2. Left outer frame assembly, 2.1-pull rope encoder, 2.2-left guide rail, 2.3-right guide rail, 2.4-left guide rail fixing bracket, 2.5-right guide rail fixing bracket, 2.6-electric control box, 2.7-embedded platform (middle support plate), 2.8-sponge pad; 3. Impact hammer assembly, 3.1-the fourth servo motor, 3.2-electromagnetic clutch, 3.3-input shaft, 3.4-the sixth gear, 3.5-gear fixing seat, 3.6-servo motor base, 3.7-the seventh gear, 3.8-synchronous shaft, 3.9-shaft fixing seat, 3.10-left synchronous pulley, 3.11-left synchronous belt, 3.12-right synchronous pulley, 3.13-right synchronous belt, 3.14-left slider / pendulum rope fixing seat, 3.15-right slider / pendulum rope fixing seat, 3.16 left slide rail, 3.17-right slide rail, 3.18-proximity switch, 3.19-working platform, 3.20-pendulum rope, 3.21-pendulum / impact hammer, 3.22-infrared probe, 3.23-horizontal platform, 3.24-acceleration sensor mounting hole, 3.25-synchronous belt fixing seat; 4. Synchronous belt drive impact assembly, 4.1-servo motor, 4.2-servo motor base, 4.3-electromagnetic clutch, 4.4-electromagnetic clutch input shaft, 4.5-synchronous pulley, 4.6-electromagnetic clutch output shaft, 4.7-synchronous belt, 4.8-roller assembly, 4.9-guide rod, 4.10-guide rod support seat, 4.11-push rod, 4.12-grating ruler, 4.13-grating, 4.14-synchronous gear idler, 4.15-synchronous pulley fixed seat, 4.16-synchronous gear idler fixed seat, 4.17-left guide slider, 4.18-right guide slider, 4.19-left guide, 4.20-right guide, 4.21-guide fixed seat, 4.22-proximity switch, 4.23-electric push rod assembly, 4.24-shock-absorbing spring, 4.25-shock-absorbing spring fixed seat.

[0016] In the roller assembly: 4.8.1-roller 1 (shaft 1), 4.8.2-roller 2 (shaft 2), 4.8.3-roller 3 (shaft 3), 4.8.4-roller 4 (shaft 4), 4.8.5-roller 5 (shaft 5), 4.8.6-roller 6 (shaft 6), 4.8.7-roller 7 (shaft 7), 4.8.8-roller 8 (shaft 8), 4.8.9-synchronous belt, 4.8.10-limiting pin, 4.8.11-roller base, 4.8.12-left slider fixing seat, 4.8.13-right slider fixing seat, 4.8.14-torsion spring, 4.8.15-locking pin, 4.8.16-roller (shaft) seat, 4.8.17-fixing block, 4.8.18-spring, 4.8.19-pulley.

[0017] In the electric push rod assembly: 4.23.1-electric push rod, 4.23.2-push rod left side fixing bracket, 4.23.3-push rod right side fixing bracket, 4.23.4-push rod lower side fixing bracket, 4.23.5-left side connecting rod, 4.23.6-right side connecting rod, 4.23.7-connecting rod fixing seat. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The following content is only an example and explanation of the concept of the present invention. The technicians in the relevant technical field make various modifications or supplements to the specific implementation cases described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all belong to the protection scope of the present invention. The experimental reagents and materials used in the following examples, unless otherwise specified, can all be obtained from commercial channels.

[0019] Example 1: Figure 1 As shown, this embodiment provides a dummy chest impact test device, the dummy chest impact test device comprising: The platform lifting, translation and rotation device assembly 1 is used to install the dummy to be tested, and the control system controls the platform to translate forward and backward in the horizontal direction, and controls the rotating platform to rotate through the control system; and The synchronous belt drives the impact assembly 4 and the impact hammer assembly 3. The synchronous belt drives the impact assembly 4 to control the rotation speed of the synchronous belt pulley, thereby controlling the movement speed of the roller assembly 4.8 on the synchronous belt, and controlling the impact hammer impact speed of the impact hammer assembly 3 through the movement of the roller assembly 4.8.

[0020] In this embodiment, it should be noted that the impact testing equipment of the present invention is divided into two parts, the left part is the installation platform of the object to be tested, including the platform lifting, translation and rotation device assembly 1 and the outer frame assembly 2; the right part is the impact hammer control part, including the outer protection frame assembly, the synchronous belt drive impact assembly 4 and the impact hammer assembly 3.

[0021] like Figure 2 and 3 As shown, the platform lifting, translation and rotation device assembly 1 includes: a first servo motor 1.1, a worm gear reducer 1.2, a reducer output shaft 1.3, a first gear 1.4, a second gear 1.5, a third gear 1.6, a screw 1.7, a screw fixing seat 1.8, a screw slider 1.9, a rotating shaft 1.10, a guide slider 1.11, a guide rail 1.12, a platform base plate 1.13, a lifting bracket 1.14, a second servo motor 1.15, 1.16-a fourth gear, 1.17-a fifth gear, a rack 1.18, a platform 1.19, a spring 1.20, a third servo motor 1.21, a rotating platform 1.22, a platform connecting plate 1.23, a first slide rail 1.24, a first slide rail slider 1.25, a second slider 1.26, a second slide rail 1.27, a proximity switch 1.28 and a reducer fixing seat 1.29.

[0022] The connection and transmission relationship of the various components of the platform lifting, translation and rotation device assembly 1 is roughly as follows: the power supply provides electrical energy to multiple servo motors, one of which servo motors 1.1 drives the worm gear reducer 1.2 to start moving, and the worm gear reducer 1.2 provides power to the reducer output shaft 1.3. The rear side of the reducer output shaft 1.3 is connected to a first gear 1.4, and the two sides of the gear 1.4 are respectively connected to a second gear 1.5 and a third gear 1.6. The rotation of the first gear 1.4 drives the second gear 1.5 and the third gear 1.6 to rotate. A screw 1.7 is installed behind the second gear 1.5 and the third gear 1.6, and the rotation of the second gear 1.5 and the third gear 1.6 drives the screw 1.7 to rotate; a screw slider 1.9 is installed on the screw 1.7, and the screw slider 1.9 converts the rotational power of the screw 1.7 into the power of linear motion, and then the screw slider 1.9 can make horizontal linear motion on the screw 1.7; The screw sliders 1.9 on both sides are connected by a rotating shaft 1.10; the rotating shaft 1.10 is connected to a lifting bracket 1.14 on both sides, and a guide slider 1.11 and a guide rail 1.12 are installed under the lifting bracket 1.14, and the lifting bracket 1.14 and the guide slider 1.11 are connected by screws. The screw slider 1.9 moves on the screw 1.7 and drives the rotating shaft 1.10 to move synchronously, and the movement of the rotating shaft 1.10 drives the guide slider 1.11 under the lifting bracket 1.14 to move synchronously; The platform connecting plate 1.23 above the lifting bracket 1.14 is connected to the lifting bracket 1.14 through the first slide rail 1.24 and the first slide rail slider 1.25; the first slide rail slider 1.25 above and the guide rail slider 1.11 below realize synchronous movement through the lifting bracket 1.14, so that the lifting bracket 1.14 can move up and down; when the lifting bracket 1.14 is lowered to the lowest point, the spring 1.20 provides an upward thrust to the connecting shaft in the middle of the lifting bracket 1.14; The power supply is also connected to the second servo motor 1.15, and the output end of the second servo motor 1.15 is equipped with a fourth gear 1.16; after the second servo motor 1.15 is powered on, the fourth gear 1.16 rotates, thereby synchronously driving the fifth gear 1.17 to rotate. Racks 1.18 are installed on both sides of the fourth gear 1.16 and the fifth gear 1.17, and the rotation of the gears 1.16 and 1.17 can drive the rack 1.18 to do linear motion; A first slide rail 1.24 and a first slider 1.25 are installed below the platform 1.19. The first slider 1.25 is fixed below the platform 1.19 by screws. The rack 1.18 is fixed below the platform 1.19 by screws. The rack 1.18 performs linear motion and can drive the platform 1.19 to perform linear motion on the first slide rail 1.24 through the first slider 1.25. The power supply is also connected to the third servo motor 1.21, and the third servo motor 1.21 is installed on the outside of the rotating platform 1.22; after the third servo motor 1.21 is powered on, it provides kinetic energy to the rotating platform 1.22, thereby driving the rotating platform 1.22 to rotate, and the rotating platform 1.22 and the platform 1.19 are connected through the second slide rail 1.27 and the second slider 1.26, so that the rotation of the rotating platform 1.22 can synchronously drive the platform 1.19 to rotate; the screw rod 1.7 is fixed on the platform bottom plate 1.13 through the screw rod fixing seat 1.8; the worm gear reducer 1.2 is fixed on the platform bottom plate 1.13 through the reducer fixing seat 1.29; when the fourth gear 1.16 and the fifth gear 1.17 are too close to the proximity switch 1.28, the proximity quick switch 1.28 triggers the alarm device.

[0023] In this embodiment, the platform lifting, translation and rotation device assembly 1 controls the lifting speed of the platform 1.19 through the worm gear reducer 1.2 controlled by the first servo motor 1.1; the translation movement of the platform 1.19 controls the platform 1.19 to move forward in the horizontal direction through the second servo motor 1.15. The rotation movement part of the platform 1.19 can drive the rotating platform 1.22 to rotate clockwise in the horizontal direction through the power source provided by the third servo motor, and at the same time can control the rotation speed of the rotating platform 1.22, thereby driving the rotation of the platform 1.19 and controlling the rotation speed of the platform 1.19.

[0024] Further, if Figure 4 As shown, a component specially used for side impact is also provided above the platform 1.19; if the dummy is placed on the side impact component on the platform 1.19 at an angle as shown in the figure, the upper arm of the dummy can be positively aligned with the impact hammer 3.21 on the right side through the rotation of the platform 1.19.

[0025] Going further, Figure 5 As shown, a component specially used for knee impact is also arranged above the platform 1.19; wherein, the knee component can be freely installed on the left or right side of the platform 1.19, and the rotation angle of the knee impact test platform is consistent with the rotation angle of the side impact test platform.

[0026] like Figure 6 As shown, the outer frame assembly 2 of this embodiment includes a rope encoder 2.1, a left guide rail 2.2, a right guide rail 2.3, a left guide rail fixing frame 2.4, a right guide rail fixing frame 2.5, an electric control box 2.6, an embedded platform 2.7 (including a middle support plate) and a sponge pad 2.8; wherein, the sponge pad 2.8 and the left and right guide rail sliders are connected by screws, the left and right guide rail sliders are fixed on the corresponding left guide rail 2.2 and right guide rail 2.3, the left guide rail 2.2 and the right guide rail 2.3 are respectively fixed to the outer frame by the left guide rail fixing frame 2.4 and the right guide rail fixing frame 2.5, and the electric control box 2.6 is installed on the frame embedded platform 2.7; when the platform lifting, translation and rotation device assembly 1 performs lifting movement, the rope encoder 2.1 records the lifting data of the platform, and the sponge pad 2.8 performs rising and falling movements along the guide rail according to the recorded platform lifting data.

[0027] like Figure 7 , 8 As shown in Figure 9, the impact hammer assembly 3 includes: a fourth servo motor 3.1, an electromagnetic clutch 3.2, an input shaft 3.3, a sixth gear 3.4, a sixth gear fixing seat 3.5, a fourth servo motor fixing seat 3.6, a seventh gear 3.7, a synchronous rotating shaft 3.8, a rotating shaft fixing seat 3.9, a first left synchronous belt pulley 3.10, a second left synchronous belt 3.11, a first right synchronous belt 3.12, a second right synchronous belt 3.13, a left slider / pendulum rope fixing seat 3.14, a right slider / pendulum rope fixing seat 3.15, a left slide rail 3.16, a right slide rail 3.17, a second proximity switch 3.18, a working platform 3.19, a pendulum rope 3.20, a pendulum / impact hammer 3.21, an infrared probe 3.22, a horizontal platform 3.23, an acceleration sensor mounting hole 3.24 and a synchronous belt fixing seat 3.25.

[0028] The specific action process of the impact hammer assembly in this embodiment is as follows: The power supply provides electric energy to the fourth servo motor 3.1, and the power output port of the fourth servo motor 3.1 is connected to the electromagnetic clutch 3.2. The electromagnetic clutch 3.2 is meshed after being energized, and then connected to the sixth gear 3.4 through the output shaft 3.3, thereby driving the sixth gear 3.4 to transmit; the sixth gear 3.4 transmits and then drives the seventh gear 3.7 to transmit; the seventh gear 3.7 is equipped with a synchronous shaft 3.8, and the left synchronous belt pulley 3.10 and the right synchronous belt pulley 3.12 are respectively installed on both sides of the synchronous shaft 3.8, The left synchronous pulley 3.10 and the right synchronous pulley 3.12 can be made to rotate synchronously, thereby driving the left synchronous belt 3.11 and the right synchronous belt 3.13 to transmit synchronously; the left synchronous belt 3.11 is provided with a left slider / pendulum rope fixing seat 3.14, and the right synchronous belt 3.13 is provided with a right slider / pendulum rope fixing seat 3.15. Through the synchronous transmission of the two synchronous belts, the left slider / pendulum rope fixing seat 3.14 and the side slider / pendulum rope fixing seat 3.15 can be driven to perform uniform linear motion synchronously.

[0029] The left slider / pendulum rope fixing seat 3.14, the right slider / pendulum rope fixing seat 3.15 and the pendulum 3.21 below are connected through the pendulum rope 3.20. The front end of the pendulum / impact hammer 3.21 is equipped with an infrared probe 3.22, which can monitor and ensure that the movement trajectory of the pendulum is horizontal; the rear end of the pendulum / impact hammer 3.21 is equipped with an acceleration sensor mounting hole 3.24, which can install an acceleration sensor to monitor the speed of the pendulum in real time; the pendulum / impact hammer 3.21 is equipped with a horizontal platform 3.23, which can adjust the angle of the pendulum / impact hammer 3.21 to ensure that the angle between the pendulum / impact hammer 3.21 and the object being measured and the impact range are within the allowable range.

[0030] Among them, the left synchronous belt 3.11 is fixed on the left slide rail 3.16, and the right synchronous belt 3.13 is fixed on the right slide rail 3.17; the left slide rail 3.16 and the right slide rail 3.17 are fixed on the working platform 3.19; the synchronous shaft 3.8 is fixed on the working platform 3.19 through the shaft fixing seat 3.9; the synchronous belts 3.11 and 3.13 are fixed on the working platform 3.19 through the synchronous belt fixing seat 3.25; the servo motor 3.1 is fixed on the working platform 3.19 through the servo motor fixing seat 3.6; the sixth gear 3.4 is fixed on the working platform 3.19 through the gear fixing seat 3.5; when the left and right sliders are too close to the proximity switch 3.18, the proximity quick switch 3.18 triggers the alarm device.

[0031] like Fig.10 , 11, 12 and 13 In the present embodiment, the synchronous belt drive impact assembly 4 comprises: a fifth servo motor 4.1, a fifth servo motor base 4.2, a second electromagnetic clutch 4.3, a second electromagnetic clutch input shaft 4.4, a synchronous pulley 4.5, a second electromagnetic clutch output shaft 4.6, a synchronous belt 4.7, a roller assembly 4.8, a guide rod 4.9, a guide rod support seat 4.10, a push rod 4.11, a grating ruler 4.12, a grating 4.13, a synchronous gear idler 4.14, a synchronous pulley fixing seat 4.15, a synchronous gear idler fixing seat 4.16, a left guide rail slider 4.17, a right guide rail slider 4.18, a left guide rail 4.19, a right guide rail 4.20, a guide rail fixing seat 4.21, a third proximity switch 4.22, an electric push rod assembly 4.23, a shock absorbing spring 4.24 and a shock absorbing spring fixing seat 4.25.

[0032] Wherein, the rolling assembly 4.8 comprises: eight rollers or eight rotating shafts (roller 1 (rotating shaft 1) indicated by 4.8.1, roller 2 (rotating shaft 2) indicated by 4.8.2, roller 3 (rotating shaft 3) indicated by 4.8.3, roller 4 (rotating shaft 4) indicated by 4.8.4, roller 5 (rotating shaft 5) indicated by 4.8.5, roller 6 (rotating shaft 6) indicated by 4.8.6, roller 7 (rotating shaft 7) indicated by 4.8.7, roller 8 (rotating shaft 8) indicated by 4.8.8), a synchronous belt 4.8.9, a limit pin 4.8.10, a roller base 4.8.11, a left slider fixing seat 4.8.12, a right slider fixing seat 4.8.13, a torsion spring 4.8.14, a locking pin 4.8.15, a roller seat 4.8.16, a fixing block 4.8.17, a spring 4.8.18 and a pulley 4.8.19.

[0033] The electric push rod assembly 4.23 comprises an electric push rod 4.23.1, a push rod left fixing frame 4.23.2, a push rod right fixing frame 4.23.3, a push rod lower fixing frame 4.23.4, a left connecting rod 4.23.5, a right connecting rod 4.23.6 and a connecting rod fixing seat 4.23.7.

[0034] The specific action process of the synchronous belt drive impact assembly of the impact test equipment of the present invention is as follows: the power supply provides electric energy to the fifth servo motor 4.1, and the fifth servo motor 4.1 rotates after being powered on, driving the second electromagnetic clutch input shaft 4.4 to rotate, and bringing electric energy to the second electromagnetic clutch 4.3, and the second electromagnetic clutch 4.3 engages after being powered on; after the second electromagnetic clutch 4.3 engages, it drives the second electromagnetic clutch output shaft 4.6 to rotate, and the end of the second electromagnetic clutch output shaft 4.6 is connected to the synchronous pulley 4.5, and the synchronous pulley 4.5 can rotate synchronously with the second electromagnetic clutch output shaft 4.6; the rotation of the synchronous pulley 4.5 drives the synchronous belt 4.7 to transmit, and then synchronously drives the synchronous gear idler wheel 4.14 to rotate.

[0035] like Fig.14 , 15 As shown in FIG. 16 , the synchronous belt 4.8.9 below the roller assembly 4.8 is connected to the synchronous belt 4.7, and the synchronous belt 4.7 drives the roller assembly 4.8 to drive on the guide rails 4.19 and 4.20; the roller assembly 4.8 drives, and the shafts 1 to 8 rotate, pushing the roller assembly 4.8 to make linear motion on the synchronous belt 4.7. When the roller assembly 4.8 moves to the electric push rod 4.23: the pulley 4.8.19 below the limit pin 4.8.10 rises along the connecting rod parts 4.23.5 and 4.23.6 above the electric push rod 4.23 to the set position and then fixed. The spring 4.8.18 is compressed until the limit pin 4.8.10 completely enters the roller assembly base 4.8.11 on the lower side of the roller assembly 4.8; when the spring 4.8.18 is fully compressed, the fixed block 4.8.17 below the roller assembly 4.8 falls off, the roller base 4.8.11 is locked above the connecting rods 4.23.5 and 4.23.6, and the roller base stops moving; the upper roller seat 4.8.16 then moves forward to the shock-absorbing spring 4.24.

[0036] When the roller seat 4.8.16 moves to the shock absorbing spring 4.24, the roller seat 4.8.16 will have two situations: situation 1: the shock absorbing force received by the roller seat 4.8.16 is large enough and stops before the shock absorbing spring 4.24; situation 2: the shock absorbing force received by the roller seat 4.8.16 is not enough to stop the roller seat 4.8.16 and the roller seat 4.8.16 rebounds.

[0037] When the roller seat 4.8.16 stops in front of the damping spring 4.24, the fifth servo motor 4.1 will control the synchronous belt 4.7 to move so that the roller base 4.8.11 moves with the synchronous belt 4.7 until the positioning pin 4.8.15 on the roller base 4.8.11 returns to the roller seat 4.8.16. When the positioning pin 4.8.15 returns to its position, the roller seat 4.8.16 and the roller base 4.8.11 are locked, the connecting rods 4.23.5 and 4.23.6 above the electric push rod 4.23 drop, the limit pin 4.8.10 and the spring 4.8.18 return to their positions, and the fixed block 4.8.17 closes again. After that, the servo motor 4.1 reverses to drive the synchronous belt 4.7 and then drives the roller assembly 4.8 to return to the initial state of the experiment.

[0038] When the roller seat 4.8.16 rebounds, the fifth servo motor 4.1 continues to control the synchronous belt 4.7 and then controls the roller base 4.8.11 to move forward until the positioning pin 4.8.15 returns to the roller seat 4.8.16. When the positioning pin 4.8.15 returns to the roller seat 4.8.16, the roller base 4.8.11 then drives the roller seat 4.8.16 to move to the shock absorbing spring 4.24 and then stops; the servo motor 4.1 then reverses to drive the synchronous belt 4.7 to pull back and control the roller assembly 4.8 to return to its position.

[0039] The roller assembly 4.8 is connected to slider fixing seats 4.8.12 and 4.8.13 on both sides, and the slider is connected to the roller assembly through the slider fixing seats; the roller assembly 4.8 is connected to a guide rod 4.9 on the upper end, and the trajectory of the roller assembly can be controlled by the guide rod 4.9; the guide rod 4.9 is fixed on the guide rod support seat 4.10, and the guide rod support seat 4.10 is fixed on the working platform; the guide rod 4.9 is connected to a push rod 4.11 on the upper end, and the push rod 4.11 and the impact hammer 3.21 are aligned. The roller assembly 4.8 performs linear motion on the guide rails 4.19 and 4.20 through the guide rail sliders 4.17 and 4.18.

[0040] The fifth servo motor 4.1 is fixed on the fifth servo motor base 4.2, and the fifth servo motor base 4.2 is fixed on the working platform. The guide rail is fixed on the working platform through the guide rail fixing seat 4.21; the synchronous pulley 4.5 is fixed on the working platform through the synchronous pulley fixing seat 4.15, and the synchronous gear idler 4.14 is fixed on the working platform through the synchronous gear idler fixing seat 4.16; when the left guide rail slider 4.17 and the right guide rail slider 4.18 are too close to the third proximity switch 4.22, the third proximity quick switch 4.22 triggers the alarm device.

[0041] When the grating ruler 4.12 passes through the grating 4.13, the grating 4.13 can record various data of the grating ruler 4.12, and further can record the dynamic data of the push rod.

[0042] like Fig.17 and 18As shown, specifically, the electric push rod 4.23.1 is connected to the external power supply separately. When the roller assembly moves to the electric push rod part, the connecting rod above the electric push rod descends, so that the roller assembly can be controlled to stop under the action of the shock absorbing spring 4.24 and the shock absorbing spring fixing seat 4.25. After the roller assembly rebounds to the initial position, the electric push rod 4.23.1 rises again to drive the left connecting rod 4.23.5 and the right connecting rod 4.23.6 to rise. The electric push rod 4.23.1 is fixed to the lower end of the platform through the push rod left fixing frame 4.23.2, the push rod right fixing frame 4.23.3, and the push rod lower fixing frame 4.23.4. The left connecting rod 4.23.5 and the right connecting rod 4.23.6 are fixed above the electric push rod 4.23.1 through the connecting rod fixing seat 4.23.7.

[0043] The present application provides an experimental device for completing the impact in the horizontal direction of the dummy calibration equipment. The device has a simple structure and is easy to operate. The impact test process of the horizontal movement of the dummy is intuitively displayed through experimental data. The servo motor and electromagnetic clutch used in the present invention have good controllability, which can stably control the impact speed of the impact hammer, effectively ensure the collection results of the experimental data, and have a good control effect on the calibration experiment that requires precise control of variables. The present invention can meet the requirements of small space, light weight and stable transmission. At the same time, the impact test equipment is not only suitable for calibration experimental equipment of different parts of various dummies, but also the equipment itself is simple to operate, and the introduction and instructions are easy to understand, which effectively improves the overall efficiency of the experiment.

[0044] Example 2: Fig.19 As shown, based on Example 1, this embodiment provides a dummy impact test method, including: 1. Install the calibration test dummy The dummy that needs to be calibrated is placed on the platform of the platform lifting, translation and rotation device assembly; for the chest impact test, the dummy only needs to be placed on the platform according to the test requirements and does not need to be specially fixed.

[0045] It should be noted here that if you plan to perform side impact and knee impact calibration tests on the dummy, you need to install the corresponding tooling components on the platform and then fix them on the tooling components. In the side impact test, the tooling components are fixed on the platform, and the dummy is placed on the tooling components. The dummy is also in an unfixed state; but the knee impact test requires fixation. First, fix the tooling components on the platform, and then fix the dummy's knee impact components on the tooling components.

[0046] 2. Install the impact hammer Select the impact hammer corresponding to the test dummy to be calibrated and fix it to the pull rope of the impact hammer assembly; use the level installed on the impact hammer to ensure that the installed impact hammer is in a horizontal state.

[0047] 3. Adjust the impact test position The platform lifting, translation and rotation device assembly can realize the forward and backward translation and rotation of the platform in the horizontal direction and the lifting and lowering in the vertical direction; the lifting, translation and rotation of the platform lifting, translation and rotation device assembly are controlled by the control system to realize the precise adjustment of the dummy position, so that the infrared ray emitted by the infrared probe at the center of the impact hammer is directly facing the part of the dummy that needs to be impacted and tested.

[0048] The adjustment process can be roughly described as follows: after the dummy is placed on the platform, the chest impact test is selected through the analysis software, and the control system automatically controls the platform lifting, translation and rotation device assembly to adjust the platform height to the preset height, and then the height is manually adjusted accurately through the analysis software until the infrared light emitted by the infrared probe in the center of the impact hammer is facing the part of the dummy that needs to be impacted.

[0049] 4. Impact test process At the beginning of the test, the control system controls the motor of the synchronous belt drive impact assembly to provide power to drive the roller assembly to move forward until the impact rod of the roller assembly absorbs the impact hammer; then the control system controls the motor of the impact hammer assembly to provide power to move the slider / pendulum rope fixing seats on the left and right sides backward, and at the same time, the motor of the synchronous belt drive impact assembly causes the impact rod of the roller assembly to absorb the impact hammer and move backward synchronously at the same speed back to the initial position of the roller assembly, and the impact hammer remains in a horizontal state during the backward movement; after the impact rod of the roller assembly absorbs the impact hammer and returns to the initial position of the roller assembly, the control system issues an instruction, and the motors of the synchronous belt drive impact assembly and the impact hammer assembly provide the same power to accelerate the impact hammer forward until the impact speed required by the test is reached (the impact hammer itself remains in a horizontal state during the entire movement process), at which time, the adsorption effect between the impact rod and the impact hammer is disconnected, and the impact hammer impacts the test part of the dummy at the impact speed required by the test in a free state.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. Dummy chest impact test equipment, characterized by: include: The platform lifting, translation and rotation device assembly is used to install the dummy under test, and the control system controls the platform to move forward and backward in the horizontal direction, and controls the rotating platform to rotate through the control system; and The synchronous belt drives the impact assembly and the impact hammer assembly. The synchronous belt drives the impact assembly to control the rotation speed of the synchronous belt pulley, thereby controlling the movement speed of the roller assembly on the synchronous belt, and controlling the impact speed of the impact hammer of the impact hammer assembly through the movement of the roller assembly.

2. The dummy chest impact test equipment according to claim 1, characterized in that: The platform lifting, translation and rotation device assembly includes: a first servo motor, a worm gear reducer, a reducer output shaft, multiple gears, a screw, a screw fixing seat, a screw slider, a rotating shaft, a guide slider, a guide rail, a platform base plate, a lifting bracket, a servo motor, a rack, a platform, a spring, a servo motor, a rotating platform, a platform connecting plate, a first slide rail, a first slide rail slider, a second slider, a second slide rail, a proximity switch and a reducer fixing seat.

3. The dummy chest impact test equipment according to claim 1, characterized in that: It also includes an outer frame assembly, which includes a rope encoder, a left guide rail, a right guide rail, a left guide rail fixing bracket, a right guide rail fixing bracket, an electric control box, an embedded platform and a sponge pad; wherein the sponge pad and the guide rail slider are connected by screws, the guide rail slider is fixed on the guide rail, the guide rail is fixed to the outer frame by the guide rail fixing bracket, and the electric control box is installed on the frame embedded platform; when the platform lifting, translation and rotation device performs lifting and lowering movement, the rope encoder records the lifting and lowering data of the platform, and the sponge pad performs rising and falling movements along the guide rail according to the recorded lifting and lowering data of the platform.

4. The dummy chest impact test equipment according to claim 1, characterized in that: The impact hammer assembly includes: a fourth servo motor, an electromagnetic clutch, an input shaft, a sixth gear, a sixth gear fixing seat, a fourth servo motor fixing seat, a seventh gear, a synchronous rotating shaft, a rotating shaft fixing seat, a first left synchronous pulley, a second left synchronous belt, a first right synchronous pulley, a second right synchronous belt, a left slider / pendulum pull rope fixing seat, a right slider / pendulum pull rope fixing seat, a left slide rail, a right slide rail, a second proximity switch, a working platform, a pendulum pull rope, a pendulum / impact hammer, an infrared probe, a horizontal platform, an acceleration sensor mounting hole and a synchronous belt fixing seat.

5. The dummy chest impact test equipment according to claim 1, characterized in that: The synchronous belt drive impact assembly includes: a servo motor, a servo motor base, an electromagnetic clutch, an electromagnetic clutch input shaft, a synchronous pulley, an electromagnetic clutch output shaft, a synchronous belt, a roller assembly, a guide rod, a guide rod support seat, a push rod, a grating scale, a grating, a synchronous gear idler, a synchronous pulley fixing seat, a synchronous gear idler fixing seat, a left guide rail slider, a right guide rail slider, a left guide rail, a right guide rail, a guide rail fixing seat, a proximity switch, an electric push rod assembly, a shock absorbing spring and a shock absorbing spring fixing seat.

6. The dummy chest impact test equipment according to claim 5, characterized in that: The rolling assembly includes: eight rollers, a synchronous belt, a limit pin, a roller base, a left slider fixing seat, a right slider fixing seat, a torsion spring, a positioning pin, a roller seat, a fixing block, a spring and a pulley; The electric push rod assembly comprises: an electric push rod, a push rod left fixing frame, a push rod right fixing frame, a push rod lower fixing frame, a left connecting rod, a right connecting rod and a connecting rod fixing seat.

7. A dummy chest impact test method, characterized in that: include: Install the calibration test dummy Place the dummy that needs to be calibrated on the platform of the platform lifting, translation and rotation device assembly; Installing the impact hammer Select the impact hammer corresponding to the test dummy to be calibrated and fix it on the pull rope of the impact hammer assembly; use the level installed on the impact hammer to ensure that the installed impact hammer is in a horizontal state; Adjust the impact test area The control system controls the lifting, translation and rotation of the platform lifting, translation and rotation device assembly to achieve precise adjustment of the dummy position, so that the infrared ray emitted by the infrared probe at the center of the impact hammer is aimed at the part of the dummy that needs to be impacted and tested; Impact Testing Process At the beginning of the test, the control system controls the motor of the synchronous belt drive impact assembly to provide power to drive the roller assembly to move forward until the impact rod of the roller assembly absorbs the impact hammer; then the control system controls the motor of the impact hammer assembly to provide power to move the slider / pendulum rope fixing seats on the left and right sides backward, and at the same time, the motor of the synchronous belt drive impact assembly causes the impact rod of the roller assembly to absorb the impact hammer and move synchronously backward at the same speed back to the initial position of the roller assembly, and the impact hammer remains in a horizontal state during the backward movement; after the impact rod of the roller assembly absorbs the impact hammer and returns to the initial position of the roller assembly, the control system issues an instruction, and the motors of the synchronous belt drive impact assembly and the impact hammer assembly provide the same power to accelerate the impact hammer forward until the impact speed required by the test is reached, the absorption effect between the impact rod and the impact hammer is disconnected, and the impact hammer impacts the test part of the dummy at the impact speed required by the test in a free state.

Images