CN114720151B - Waveform-adjustable low-speed collision test system based on energy storage device - Google Patents
Waveform-adjustable low-speed collision test system based on energy storage device Download PDFInfo
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- CN114720151B CN114720151B CN202210398757.5A CN202210398757A CN114720151B CN 114720151 B CN114720151 B CN 114720151B CN 202210398757 A CN202210398757 A CN 202210398757A CN 114720151 B CN114720151 B CN 114720151B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
The waveform-adjustable low-speed collision test system based on the energy storage device comprises a floor, wherein a guide rail is arranged on the floor, one end of the guide rail is provided with an ejection device, the other end of the guide rail is provided with a buffer energy absorption device, a test trolley is arranged between the ejection device and the buffer energy absorption device, and the tail end of the test trolley is provided with an electromagnet device; the ejection device comprises a driving mechanism, an energy storage mechanism and a steel wire rope, wherein the driving mechanism is connected with the energy storage mechanism; the driving mechanism comprises a traction motor, a traction motor mounting base and a traction motor mounting bracket, and the traction motor is mounted on the traction motor mounting base; the two ends of the steel wire rope are respectively connected with a traction motor and an electromagnet device. By utilizing the invention, different initial speeds of the low-speed test trolley can be obtained, and the energy storage and release are reversible, and the invention has simple and reasonable structure, is easy to realize accurate installation and ensures that the test is completed smoothly; the reaction of the passengers in the real cockpit in the emergency braking working condition can be simulated more truly; sufficient adjustment of the collision waveform can be achieved.
Description
Technical Field
The invention relates to a collision test system, in particular to a waveform-adjustable low-speed collision test system based on an energy storage device.
Background
With the continuous progress of automobile safety technology, active safety technology represented by automatic emergency braking is widely popularized and applied, and collision accidents are better avoided. However, the intervention of the active safety system may cause changes in the vehicle occupant and vehicle attitude, for example, after emergency braking, the vehicle occupant leans forward due to inertia, resulting in a reduced distance from the steering wheel and the simulated instrument panel, and if a collision accident occurs at this time, a normally matched airbag may not provide the most effective protection for the occupant.
Therefore, the posture change rule of the passenger under the emergency braking working condition is urgently researched, most of the side or front collision trolleys adopted in China at the present stage are fewer in volunteer trolley test research aiming at the emergency braking working condition, research resources are relatively deficient, and the trolley for simulating collision damage biomechanics research volunteer tests or related type tests under different emergency braking working conditions is lacking in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a waveform adjustable low-speed collision test system based on an energy storage device, which can simulate collisions under different emergency braking working conditions.
The technical scheme adopted by the invention for solving the technical problems is that the wave-form adjustable low-speed collision test system based on the energy storage device comprises a floor, wherein a guide rail is arranged on the floor, one end of the guide rail is provided with an ejection device, the other end of the guide rail is provided with a buffer energy absorbing device, a test trolley is arranged between the ejection device and the buffer energy absorbing device, the tail end of the test trolley is provided with an electromagnet device, and the test trolley can slide on the guide rail;
the ejection device comprises a driving mechanism and an energy storage mechanism, and the steel wire rope is connected with the driving mechanism;
the driving mechanism comprises a traction motor, a traction motor mounting base and a traction motor mounting bracket, wherein the traction motor is mounted on the traction motor mounting base, the traction motor mounting base is fixed on the traction motor mounting bracket, and the traction motor mounting bracket is fixed on a baffle plate at the side end of the floor;
the two ends of the steel wire rope are respectively connected with a traction motor and an electromagnet device;
the buffering energy-absorbing device comprises a buffering energy-absorbing device frame fixedly installed on the floor, spring sliding rails are arranged on two sides of the buffering energy-absorbing device frame, a hydraulic damper is arranged in the buffering energy-absorbing device frame, a buffering spring is arranged on the outer ring of the hydraulic damper, buffering spring limiting plates are arranged at two ends of the buffering spring, the buffering spring limiting plates at one end fix the buffering spring and the hydraulic damper on the buffering energy-absorbing device frame, the buffering spring limiting plates at the other end are installed on the spring sliding rails and can move along the spring sliding rails.
Further, the energy storage mechanism comprises an energy storage guide rod, one end of the energy storage guide rod is fixed on a baffle plate at the side end of the floor through an energy storage baffle plate, the other end of the energy storage guide rod is installed on the floor through a guide rod supporting seat, an energy storage spring is sleeved on the outer ring of the energy storage guide rod, and the energy storage baffle plate is detachably connected with the baffle plate.
Further, energy storage mechanism includes energy storage rubber rope, energy storage rubber rope fixed column, energy storage rubber rope is equipped with three groups, energy storage rubber rope fixed column is equipped with two sets of, first group energy storage rubber rope fixed column sets up be close to actuating mechanism's one end, with energy storage rubber rope fixed connection, second group energy storage rubber rope fixed column sets up buffering energy-absorbing device one end, and be equipped with the spout on the second group fixed column, energy storage rubber rope installs in the spout, two sets of energy storage rubber rope fixed columns live the symmetry and install on the floor, energy storage rubber rope fixed column and energy storage rubber rope are detachable connection.
Further, energy storage mechanism includes energy storage air spring, air spring support, air spring baffle, energy storage air spring is equipped with two sets of, installs on the floor through air spring support symmetry, air spring baffle installs and connects two sets of energy storage air spring at energy storage air spring's front end, air spring support and air spring baffle are detachable connection.
Further, the test trolley comprises a trolley chassis, a seat, a safety belt, a simulated instrument board, a steering wheel, a simulated foot pedal and a front baffle; the trolley chassis consists of a trolley main body, a wheel structure, a front barrier and a rear baffle; the front barrier is connected with the right front of the trolley body, and the rear baffle is connected with the lower part of the rear part of the trolley body; the rear baffle plate passes through the energy storage guide rod and then contacts with the energy storage baffle plate.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the energy storage mechanism, through the combination of different energy storage springs (energy storage rubber ropes and air springs) and the adjustment of compression distances, different initial speeds of the low-speed test trolley can be obtained, and the energy storage and release are reversible;
(2) The test trolley comprises the passenger seat and the safety belt, and simulates an instrument board, a steering wheel, a front baffle and a simulated foot pedal, so that the reaction of a passenger in a real cockpit in an emergency braking working condition can be simulated more truly;
(3) The barrier device in the buffering energy-absorbing device is formed by combining a plurality of energy-absorbing components, the rigidity of the buffering spring and the damping coefficient of the hydraulic damper are adjustable, the number of single spring-hydraulic damping components is adjustable, and the full adjustment of collision waveforms can be realized.
(4) The system can overcome the defect that the domestic trolley cannot simulate the emergency braking working condition at the present stage, is difficult to evaluate the influence of the passenger posture change on passenger protection after the intervention of the active safety technology, has reasonable integral structure, can meet the emergency braking test working condition of test requirements, and provides a test basis for the research of the active and passive safety technologies of automobiles.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the traction motor installation of the ejection device of FIG. 1;
FIG. 3 is a schematic view of the installation of the energy storage spring and guide rod of the ejection device of FIG. 1;
FIG. 4 is a schematic view of the test trolley of FIG. 1;
FIG. 5 is a schematic structural view of the buffering and energy absorbing device of FIG. 1.
FIG. 6 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 7 is a schematic diagram illustrating installation of the stored energy rubber string and the securing lever of the ejection device of FIG. 6;
FIG. 8 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 9 is a schematic diagram of the stored energy air spring and the holder of the ejection device of fig. 8.
In the figure: 1. floor, 1-1 baffle, 2 guide rail, 3 catapulting device, 3-1 driving mechanism, 3-11 traction motor, 3-12 traction motor mounting base, 3-13 traction motor mounting bracket, 3-14 wire rope, 3-2 energy storage mechanism, 3-21 energy storage guide rod, 3-22 energy storage baffle, 3-23 guide rod supporting seat, 3-24 energy storage spring, 4 buffering and energy absorbing device, 4-1 buffering and energy absorbing device frame, 4-2 spring slide rail, 4-3 hydraulic damper, 4-4 buffering spring, 4-5 buffering spring limit plate, 5 test trolley, 5-1 electromagnet device, 5-2 trolley chassis, 5-21 trolley body, 5-22 wheel structure, 5-23 front barrier, 5-24 rear baffle, 5-3 seat, 5-4 safety belt, 5-5 simulated instrument panel, 5-6 steering wheel, 5-7 simulated foot pedal, 5-8 front baffle, 3-21' energy storage rubber rope, 3-22' energy storage rubber rope fixing column, 3-21' energy storage air spring, 3-22' air spring support, 3-23 ' air spring baffle.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
Example 1
Referring to fig. 1-5, the embodiment comprises a floor 1, a guide rail 2 is arranged on the floor 1, an ejection device 3 is arranged at one end of the guide rail 2, a buffer energy absorbing device 4 is arranged at the other end of the guide rail, a test trolley 5 is arranged between the ejection device 3 and the buffer energy absorbing device 4, an electromagnet device 5-1 is arranged at the tail end of the test trolley 5, and the test trolley 5 can slide on the guide rail 2.
The ejection device 3 comprises a driving mechanism 3-1 and an energy storage mechanism 3-2 which are connected with each other, the driving mechanism 3-1 comprises a traction motor 3-11, a traction motor mounting base 3-12 and a traction motor mounting bracket 3-13, the traction motor 3-11 is mounted on the traction motor mounting base 3-12, and the traction motor mounting base 3-12 is fixed on the traction motor mounting bracket 3-13 through bolts. The traction motor mounting bracket 3-13 is fixed on the baffle plate 1-1 at the side end of the floor 1.
The ejection device 3 further comprises a steel wire rope 3-14, two ends of the steel wire rope 3-14 are respectively connected with the traction motor 3-11 and the electromagnet device 5-1, wherein the electromagnet device 5-1 is used for driving the test trolley 5 to compress the energy storage mechanism 3-2.
The energy storage mechanism 3-2 comprises an energy storage guide rod 3-21, one end of the energy storage guide rod 3-21 is fixed on a baffle plate 1-1 at the side end of the floor 1 through an energy storage baffle plate 3-22, the other end of the energy storage guide rod is installed on the floor 1 through a guide rod supporting seat 3-23, an outer ring of the energy storage guide rod 3-21 is sleeved with an energy storage spring 3-24, the energy storage baffle plate 3-22 is detachably connected with the baffle plate 1-1, and the energy storage spring 3-24 with different rigidities is convenient to replace so as to meet the requirements of different initial speeds of the test trolley 5.
The traction motor 3-11 pulls the test trolley 5 to compress or stretch the energy storage spring 3-24 until the energy storage spring is released after reaching a designated position, and the energy absorbed by the energy storage spring 3-24 is converted into the kinetic energy of the test trolley 5, so that the test trolley 5 obtains the initial speed required by the test
The buffering and energy absorbing device 4 comprises a buffering and energy absorbing device frame 4-1 fixedly arranged on the floor 1, and the buffering and energy absorbing device frame 4-1 is a frame with three closed surfaces and one open surface. Two groups of spring sliding rails 4-2 are arranged on two sides of the buffering and energy absorbing device frame 4-1, a hydraulic damper 4-3 is arranged in the buffering and energy absorbing device frame 4-1, a buffering spring 4-4 is arranged on the outer ring of the hydraulic damper 4-3, buffering spring limiting plates 4-5 are arranged on two ends of the buffering spring 4-4, the buffering spring limiting plates 4-5 at the closed ends fix the buffering spring 4-4 and the hydraulic damper 4-3 on the buffering and energy absorbing device frame 4-1, and the buffering spring limiting plates 4-5 at the open ends are arranged on the spring sliding rails 4-2 and can move along the spring sliding rails 4-2. In this embodiment, the hydraulic damper 4-3 employs an energy-absorbing hydraulic cylinder.
As shown in fig. 4, the test trolley 5 comprises a trolley chassis 5-2, a seat 5-3, a safety belt 5-4, a simulated instrument panel 5-5 and a steering wheel 5-6, a simulated foot pedal 5-7 and a front baffle 5-8; the bogie chassis 5-2 comprises a bogie body 5-21, a wheel structure 5-22, a front barrier 5-23 and a rear barrier 5-24.
The wheel structure 5-22 in this embodiment includes four wheels symmetrically disposed on the left and right sides of the head of the test carriage 5, each wheel being connected with the carriage body 5-21. The front barrier 5-23 is connected right in front of the trolley body 5-21 through bolts, and the rear baffle 5-24 is arranged below the rear part of the trolley body 5-21; the rear baffle 5-24 in the embodiment passes through the energy storage guide rod 3-21 and then contacts with the energy storage baffle 3-22 when being installed; the seat 5-3 and the safety belt 5-4 comprise double long-strip seats and safety belts, the double long-strip seats are arranged at the rear part of the trolley main body 5-21 through seat supports, and the safety belts 5-4 are symmetrically arranged at two sides of the seat 5-3; the front baffle plate 5-8 and the simulated foot pedal 5-7 are arranged at the front part of the trolley main body 5-21, support columns are arranged at two sides of the front baffle plate 5-8, and the simulated instrument board 5-5 and the steering wheel 5-6 are arranged at the rear part of the front baffle plate 5-8; the steering wheel 5-6 is disposed in front of the left side seat 5-3.
The working procedure of this example:
firstly, adjusting the rigidity of the energy storage spring 3-24 according to the initial speed required by the test, designing the compression length, and adjusting the rigidity of the buffer spring 4-4 and the damping coefficient of the hydraulic damper 4-3 according to the collision waveform required by the test; the installation height of the traction motor 3-11 is adjusted to ensure the consistency with the height of the test trolley 5, the traction motor 3-11 and the test trolley 5 are connected by using the steel wire rope 3-14 and the electromagnet device 5-1, after the traction motor 3-11 pulls the test trolley 5 to compress the energy storage spring 3-24 to a specified compression position, the electromagnet 5-1 connecting device is disconnected, and the energy storage spring 3-24 pushes the test trolley 5 to slide along the track 2 on the floor 1 and collide with the front barrier 5-23 so as to complete an emergency braking experiment.
In the implementation, the main functions of the buffer spring 4-4 in the buffer energy absorbing device 4 are buffer deceleration, the main functions of the hydraulic damper 4-3 are deceleration and energy absorption, in the test process, the test trolley 5 contacts with the buffer spring limiting plate 4-5 at the open end, the buffer spring limiting plate 4-5 at the open end moves along the direction of the spring sliding rail 4-2, the buffer spring 4-4 and the hydraulic damper 4-3 are compressed, and the test trolley 5 continuously decelerates until stopping, so that the function of simulating emergency braking is realized. Wherein the buffering and energy absorbing device 4 can adjust the collision deceleration waveform, the implementation mode comprises: the rigidity of the buffer spring 4-4 and the damping coefficient of the hydraulic damper 4-3 are adjusted to change the buffer energy absorbing effect of the single spring-hydraulic damping component, the number of the buffer springs-hydraulic dampers is adjusted to change the whole buffer energy absorbing effect of the buffer energy absorbing device, and the number of the buffer springs 4-4 and the hydraulic dampers 4-3 in the embodiment is 2.
The requirements of different experimental conditions can be met, if the total mass of the test trolley 5 is 400kg, an initial speed of 20km/h is obtained through the ejection device 3, an emergency braking working condition with the test requirement deceleration of 1g is simulated, 2 buffer springs-hydraulic dampers are arranged at the moment through calculation, the rigidity of the buffer springs is 10N/mm, the total length of the buffer springs is 1500mm, the effective stroke of a piston of the hydraulic damper 4-3 is 950mm, the maximum damping force is 100KN, and the damping coefficient is 0.36N x s/mm; if the test needs to adjust the initial collision speed to 30km/h, the buffer springs 4-4 with different rigidities can be replaced, for example, the spring rigidity is replaced by 15kN/mm; if the collision deceleration is adjusted to 0.8g, the damping coefficient is changed by adjusting the relief valve of the hydraulic damper 4-3, for example, the damping coefficient is adjusted to 0.3n x s/mm; if the test requires the trolley to be adjusted to 600kg in mass, the number of the buffer springs-hydraulic dampers is increased, for example, the number is adjusted from 2 to 3. The adjustment of the buffering energy-absorbing component can meet different test conditions, the waveform of the spring energy storage is adjustable, and the application scene of the test trolley is enriched.
Example 2
Referring to fig. 6 to 7, this embodiment differs from embodiment 1 in that: the energy storage mechanism 3-2 comprises an energy storage rubber rope 3-21' and an energy storage rubber rope fixing column 3-22', wherein three groups of energy storage rubber ropes are arranged on the 3-21', two groups of energy storage rubber rope fixing columns are arranged on the 3-22', the first group of energy storage rubber rope fixing columns are arranged at one end close to the driving mechanism 3-1 and fixedly connected with the energy storage rubber rope 3-21', the second group of energy storage rubber rope fixing columns are arranged at one end of the buffering energy absorbing device 4, three groups of sliding grooves are formed in the second group of fixing columns, the energy storage rubber rope 3-21' is installed in the sliding grooves, the two groups of energy storage rubber ropes 3-21' are symmetrically installed on the floor 1, and the energy storage rubber rope fixing columns 3-22' and the energy storage rubber rope 3-21' are detachably connected.
The traction motor 3-11 pulls the test trolley 5 to stretch the three groups of energy storage rubber ropes 3-21', the energy storage rubber ropes are released after reaching the designated positions, the energy storage rubber ropes 3-21' pull the test trolley 5 to advance, the test trolley 5 obtains initial speed, and elastic potential energy of the energy storage rubber ropes 3-21' is converted into kinetic energy of the test trolley 5. Example 1 was followed.
Example 3
Referring to fig. 8 to 9, this embodiment differs from embodiment 1 in that: the energy storage mechanism 3-2 comprises an energy storage air spring 3-21', an air spring support 3-22 and an air spring baffle 3-23", wherein two groups of energy storage air springs 3-21' are symmetrically arranged on the floor 1 through the air spring support 3-22", the air spring baffle 3-23 'is connected with the front end of the energy storage air spring 3-21' and is connected with the two groups of energy storage air springs 3-21", and the air spring support 3-22 'and the air spring baffle 3-23' are detachably connected.
The traction motor 3-11 pulls the test trolley 5 to compress the energy storage air spring 3-21 'until the energy storage air spring is released after the energy storage air spring is positioned at the designated position, and the energy absorbed by the air spring 3-21' is converted into the kinetic energy of the test trolley 5, so that the test trolley 5 obtains the initial speed required by the test. Example 1 was followed.
Various modifications and variations of the present invention may occur to those skilled in the art, and, if such modifications and variations are within the scope of the claims and their equivalents, they are also within the scope of the patent of the present invention.
What is not described in detail in the specification is prior art known to those skilled in the art.
Claims (2)
1. The utility model provides a wave form adjustable low-speed collision test system based on energy memory, includes the floor, is equipped with guide rail, its characterized in that on the floor: an ejection device is arranged at one end of the guide rail, a buffer energy absorbing device is arranged at the other end of the guide rail, a test trolley is arranged between the ejection device and the buffer energy absorbing device, an electromagnet device is arranged at the tail end of the test trolley, and the test trolley can slide on the guide rail;
the ejection device comprises a driving mechanism and an energy storage mechanism, and the steel wire rope is connected with the driving mechanism;
the driving mechanism comprises a traction motor, a traction motor mounting base and a traction motor mounting bracket, wherein the traction motor is mounted on the traction motor mounting base, the traction motor mounting base is fixed on the traction motor mounting bracket, and the traction motor mounting bracket is fixed on a baffle plate at the side end of the floor;
the two ends of the steel wire rope are respectively connected with a traction motor and an electromagnet device;
the buffering and energy-absorbing device comprises a buffering and energy-absorbing device frame fixedly installed on a floor, spring sliding rails are arranged on two sides of the buffering and energy-absorbing device frame, a hydraulic damper is arranged in the buffering and energy-absorbing device frame, a buffering spring is arranged on the outer ring of the hydraulic damper, buffering spring limiting plates are arranged on two ends of the buffering spring, the buffering spring limiting plates at one end fix the buffering spring and the hydraulic damper on the buffering and energy-absorbing device frame, and the buffering spring limiting plates at the other end are installed on the spring sliding rails and can move along the spring sliding rails;
the energy storage mechanism comprises an energy storage guide rod, one end of the energy storage guide rod is fixed on a baffle plate at the side end of the floor through an energy storage baffle plate, the other end of the energy storage guide rod is installed on the floor through a guide rod supporting seat, an energy storage spring is sleeved on the outer ring of the energy storage guide rod, and the energy storage baffle plate is detachably connected with the baffle plate;
or, the energy storage mechanism comprises an energy storage rubber rope and energy storage rubber rope fixing columns, the energy storage rubber rope is provided with three groups, the energy storage rubber rope fixing columns are provided with two groups, the first group of energy storage rubber rope fixing columns are arranged at one end close to the driving mechanism and fixedly connected with the energy storage rubber rope, the second group of energy storage rubber rope fixing columns are arranged at one end of the buffering energy absorbing device, the second group of energy storage rubber rope fixing columns are provided with sliding grooves, the energy storage rubber rope is installed in the sliding grooves, the two groups of energy storage rubber rope fixing columns are symmetrically installed on the floor, and the energy storage rubber rope fixing columns and the energy storage rubber rope are detachably connected;
or, energy storage mechanism includes energy storage air spring, air spring support, air spring baffle, energy storage air spring is equipped with two sets of, installs on the floor through air spring support symmetry, air spring baffle installs at energy storage air spring's front end and connects two sets of energy storage air spring, air spring support and air spring baffle are detachable connection.
2. The energy storage device-based waveform adjustable low-speed collision test system according to claim 1, wherein: the test trolley comprises a trolley chassis, a seat, a safety belt, a simulated instrument board, a steering wheel, a simulated foot pedal and a front baffle; the trolley chassis consists of a trolley main body, a wheel structure, a front barrier and a rear baffle; the front barrier is connected with the right front of the trolley body, and the rear baffle is connected with the lower part of the rear part of the trolley body; the rear baffle plate passes through the energy storage guide rod and then contacts with the energy storage baffle plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210398757.5A CN114720151B (en) | 2022-04-15 | 2022-04-15 | Waveform-adjustable low-speed collision test system based on energy storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210398757.5A CN114720151B (en) | 2022-04-15 | 2022-04-15 | Waveform-adjustable low-speed collision test system based on energy storage device |
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| CN114720151A CN114720151A (en) | 2022-07-08 |
| CN114720151B true CN114720151B (en) | 2023-04-25 |
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| CN114878131B (en) * | 2022-07-11 | 2022-09-27 | 江苏金秋竹集团有限公司 | Protective door impact test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201139C (en) * | 2002-01-28 | 2005-05-11 | 湖南大学 | Electrical mechanical energy-storing automobile impact test apparatus |
| CN101464220A (en) * | 2007-12-17 | 2009-06-24 | 湖南大学 | Vehicle collision test simulating device |
| JP5484177B2 (en) * | 2010-04-27 | 2014-05-07 | 一般財団法人日本自動車研究所 | Pre-crash test method and pre-crash test equipment |
| CN202693249U (en) * | 2012-06-13 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Sliding table collision test device |
| CN107305160A (en) * | 2016-04-17 | 2017-10-31 | 湖南大学 | A kind of chassis collision deceleration regulation experimental rig |
| KR20190123762A (en) * | 2017-02-28 | 2019-11-01 | 고쿠사이 게이소쿠키 가부시키가이샤 | Collision Simulation Device and Impact Test Device |
| CN107884213A (en) * | 2017-11-02 | 2018-04-06 | 西南交通大学 | A kind of ejection type rail vehicle bump testing machine |
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