CN111982449B - High-speed magnetic levitation driven ultra-high-speed impact test system - Google Patents
High-speed magnetic levitation driven ultra-high-speed impact test system Download PDFInfo
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- CN111982449B CN111982449B CN202010877342.7A CN202010877342A CN111982449B CN 111982449 B CN111982449 B CN 111982449B CN 202010877342 A CN202010877342 A CN 202010877342A CN 111982449 B CN111982449 B CN 111982449B
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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
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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
- G01M17/08—Railway vehicles
Abstract
A high-speed magnetic suspension driven ultra-high-speed impact test system relates to a high-speed magnetic suspension driven ultra-high-speed impact test and aims to solve the problem that the existing impact test system cannot realize the impact test of ultra-high speed, ultra-large mass and ultra-large impact energy. The trolley is assembled by the acceleration section and synchronously runs in an acceleration mode, and enters the constant speed section when the trolley reaches the preset speed; in the uniform speed section, the impact height and the impact angle of the trolley are adjusted; when the trolley reaches a release point, the synchronous operation of the driving system and the trolley is released, the driving system enters an emergency braking state, the trolley departs from the driving system and flies to a planned impacted body, impact occurs, and impact data are synchronously collected; and after entering an emergency braking state, the driving system enters a deceleration section of the track system and gradually decelerates to be static, so that the ultra-high-speed impact test is completed. The impact test device has the beneficial effects that the impact test of ultrahigh speed, ultrahigh mass and ultrahigh impact energy of the large-scale structure trolley is realized.
Description
Technical Field
The invention relates to a high-speed magnetic suspension driven ultra-high-speed impact test.
Background
In the event of ultra-high-speed impact, the impact speed under the worst working condition is 926km/h, the impact energy can reach 3804.4MJ, the impact energy with high intensity can cause immeasurable influence on personal safety and economy, and no scientific research institution or scholars reproduce and research the high-speed impact process in an impact test manner; and the full-scale and large-scale reduced-scale real vehicle impact test is one of important means for impact resistance design and impact dynamic response analysis of large-scale structures.
At present, the mature large-scale impact test in the field of civil engineering impact resistance is mainly and intensively applied to the traffic field, the adopted driving modes mainly comprise a slope type impact system, a pneumatic ejection type impact test system and a drop hammer traction type impact test system, the three types are limited by a power driving technology, and the maximum impact speed can only reach 120 km/h; the impact test of ultrahigh speed, ultra-large mass and ultra-large impact energy cannot be realized, and the impact test research of full size or large scale reduction on large buildings or structures cannot be carried out.
Disclosure of Invention
The invention aims to solve the problem that the existing impact test system cannot realize an impact test with ultrahigh speed, ultrahigh mass and ultrahigh impact energy, and provides a high-speed magnetic suspension driven ultrahigh-speed impact test system.
The invention relates to a high-speed maglev-driven ultra-high-speed impact test system which comprises a track system, a driving system, an attitude adjusting and locking releasing system, a control system, a trolley, a planned impacted body and an ultra-dynamic data acquisition system, wherein the track system is connected with the driving system through a cable;
the track system comprises the following components from the beginning end to the tail end in sequence: an acceleration section, a constant speed section and a deceleration section; the tail end of the constant speed section is provided with a release point, the deceleration section comprises a curve area and a straight area, the initial end of the curve area is connected with the tail end of the constant speed section, and the constant speed section of the track system is tangent to the curve area of the deceleration section of the track system;
the planned impacted body is arranged on the outer side of the bend area, and the planned impacted body is positioned on an extension line of the constant speed section of the track system;
the trolley is assembled on the driving system from the starting end of the acceleration section, the trolley and the driving system synchronously run in an accelerated manner after assembly, the trolley reaches a preset speed when reaching the tail end of the acceleration section, and then enters the constant speed section; in the uniform speed section, the trolley and the driving system synchronously run at a uniform speed, and the posture adjusting and locking releasing system is controlled by the control system to adjust the impact height and the impact angle of the trolley; when the trolley reaches a release point, the control system controls the attitude adjustment and locking release system to release the synchronous operation of the driving system and the trolley, and controls the driving system to enter an emergency braking state, at the moment, the trolley departs from the driving system and flies to a planned impacted body to generate impact, and synchronously triggers the ultra-dynamic data acquisition system to start to acquire impact data; and after entering an emergency braking state, the driving system enters a deceleration section of the track system and gradually decelerates to be static, so that the ultra-high-speed impact test is completed.
The invention relates to a high-speed magnetic levitation driven ultra-high-speed impact test system which comprises the following specific test steps: firstly, adjusting the type, the quality and the distribution of the trolley quality of the impact trolley according to the test requirements; debugging the ultra-dynamic acquisition system to enable the ultra-dynamic acquisition system to enter a standby state; secondly, controlling a driving system to drive the trolley to accelerate through a control system, controlling the trolley to meet a preset speed before reaching a release point according to requirements, and then keeping constant-speed movement to the release point; in the process of uniform motion of the trolley, the attitude adjusting and locking and releasing system is controlled by the control system to adjust the lifting angle of the trolley, so that the requirement of the impact working condition of the structure impact height and the impact angle is met; thirdly, after the trolley reaches a release point, the attitude adjusting and locking release system is controlled by the control system, after the fixation of the trolley and the driving system is released, the control system controls the driving system to brake emergently, the trolley is released at the moment, and the ultra-dynamic acquisition system is synchronously triggered to start to acquire impact data at the release moment; and finally, the driving system continues to brake, gradually decelerates to be static and then recovers, and the test is completed.
The invention has the beneficial effects that: the ultra-high-speed impact test system adopts a high-speed magnetic levitation technology to drive the trolley system to accelerate, realizes the impact of ultra-high speed (more than or equal to 600km/h), ultra-high mass (more than or equal to 300t) and ultra-high impact energy (more than or equal to 4166MJ) of a large-scale structure trolley, has wide applicability, plans that an impacted body can be a large-scale steel structure model (such as models of bird nests, water cubes, airport buildings and the like) and a large-scale concrete structure model (such as large-scale nuclear safety shell models of Hualong I, AP1000, CAP1400 and the like), can select a full-scale or reduced-scale airplane model, a missile model and the like, and can adjust parameters such as an impact angle, an impact height, impact quality and the like according to the requirements of technical working conditions.
Drawings
FIG. 1 is a top view of an overall structure of a high-speed magnetic levitation driven ultra-high-speed impact test system according to an embodiment;
FIG. 2 is a perspective view of a high-speed magnetic levitation driven ultra-high-speed impact test system according to an embodiment;
FIG. 3 is a schematic illustration of a track system segment division according to one embodiment;
FIG. 4 is a flowchart of a test performed by a trolley according to one embodiment;
fig. 5 is a schematic view of a position structure of arrangement of a protection net in the second embodiment;
FIG. 6 is a schematic view of the energy-absorbing recovery device and a stopper wall according to a second embodiment;
FIG. 7 is a schematic diagram of a track system according to a third embodiment;
FIG. 8 is a schematic perspective view of a fifth embodiment of a suspension steering system;
FIG. 9 is a schematic vertical cross-sectional view of a fifth embodiment suspended steering system;
FIG. 10 is a schematic perspective view of an emergency braking system according to a sixth embodiment;
FIG. 11 is a side view of a seventh embodiment attitude adjustment and lock release system;
FIG. 12 is a schematic perspective view of a lock release mechanism of the seventh embodiment of the present invention before release of the dolly;
FIG. 13 is a schematic perspective view of a lock release mechanism after release of the cart in accordance with the seventh embodiment;
FIG. 14 is a schematic structural view of a seventh embodiment of an assembly of a selected aircraft as a dolly;
FIG. 15 is a schematic diagram of a seventh embodiment of a missile selected for assembly as a dolly;
FIG. 16 is a schematic view of a seventh embodiment of a platform truck mounted in a fixed dive attitude configuration;
FIG. 17 is a schematic view of the seventh embodiment of the present invention in which the carriage is assembled in a fixed manner by using the upward-looking posture;
FIG. 18 is a schematic view of a horizontal attitude-fixed assembly of the seventh embodiment of the present invention;
fig. 19 is a control schematic block diagram of a control system according to an eighth embodiment.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and the high-speed maglev-driven ultra-high-speed impact test system according to the embodiment includes a track system 1, a driving system 2, an attitude adjusting and locking and releasing system 3, a control system 4, a trolley 6, a proposed impact body 7 and an ultra-dynamic data acquisition system 8;
the track system 1 comprises the following components from the beginning to the end in sequence: an acceleration section, a constant speed section and a deceleration section; a release point is arranged at the tail end of the constant speed section, the deceleration section comprises a curve area and a straight area, the initial end of the curve area is connected with the tail end of the constant speed section, and the constant speed section of the track system 1 is tangent to the curve area of the deceleration section of the track system 1;
the planned impacted body 7 is arranged on the outer side of the curve area, and the planned impacted body 7 is positioned on the extension line of the constant speed section of the track system 1;
the trolley 6 is assembled on the driving system 2 from the beginning end of the acceleration section, the trolley 6 and the driving system 2 synchronously run in an accelerated mode after assembly, when the trolley 6 reaches the tail end of the acceleration section, the preset speed is reached, and then the trolley enters the constant speed section; in the uniform speed section, the trolley 6 and the driving system 2 synchronously run at a uniform speed, and the posture adjusting and locking and releasing system 3 is controlled by the control system 4 to adjust the impact height and the impact angle of the trolley 6; when the trolley 6 reaches a release point, the control system 4 controls the posture adjustment and locking release system 3 to release the synchronous operation of the driving system 2 and the trolley 6, and controls the driving system 2 to enter an emergency braking state through the control system 4, at the moment, the trolley 6 is separated from the driving system 2 and flies to the planned impacted body 7 to generate impact, and synchronously triggers the ultra-dynamic data acquisition system 8 to start to acquire impact data; and after entering an emergency braking state, the driving system 2 enters a deceleration section of the track system 1 and gradually decelerates to be static, so that the ultra-high-speed impact test is completed.
In the present embodiment, the track system 1 is used for guiding the advancing direction of the trolley 6; and is also used for bearing the load of the trolley 6;
the driving system 2 is used for towing the trolley 6 and accelerating the trolley 6; for adjusting the advancing direction of the trolley 6; but also for emergency braking itself;
the posture adjusting and locking releasing system 3 is used for adjusting the mass distribution of the trolley 6 on the driving system 2 according to the size of the trolley 6; the device is used for accurately adjusting the impact angle and the impact height of the trolley 6 according to the test working condition and releasing the traction between the trolley 6 and the driving system 2 at a release point;
the control system 4 is used for respectively controlling the driving system 2, the attitude adjusting and locking releasing system 3 and the ultra-dynamic data acquisition system 8;
an impacted body 7 is planned and used for impacting the trolley 6 to realize the ultra-high speed impact test;
and the ultra-dynamic data acquisition system 8 is used for acquiring impact data when the trolley 6 impacts the planned impacted body 7.
In the present embodiment, in order to facilitate acceleration of the drive system 2 and the carriage 6 during the impact test and deceleration braking of the drive system after the drive system 2 is separated from the carriage 6, the total length of the track system 1 is designed to be 3.071km, as shown in fig. 3; the system comprises an acceleration section and a 1.2km acceleration section, wherein the acceleration section is used for finishing the speed increase of the driving system 2 according to the speed requirement of the working condition, and the acceleration is not lower than 11.57m/s2The maximum speed can be increased to over 600 km/h; a constant speed section of 0.6km is used for adjusting the posture according to the test working condition, so that the speed is more accurate when the trolley 6 is released, and the posture is more stable; and the deceleration section consists of a curve with the turning radius of 8km and the length of 0.75km and a straight section with the length of 0.75km, and is used for changing the running direction of the driving system 2 after the trolley 6 is launched and finishing deceleration braking and recovery of the driving system 2.
In the present embodiment, the ultra-dynamic data acquisition system 8 includes a high-speed imaging system, a non-contact measurement system, a data acquisition system, and an acceleration sensor.
In the embodiment, the track system 1 is designed according to the mass of the carrier equipment of the trolley 6 and the driving system 2, and the bearing capacity and the rigidity are mainly checked; the driving system 2 adopts high-speed magnetic levitation driving, and carries out model selection and checking calculation according to the quality factor of the trolley 6; the posture adjusting and locking releasing system 3 is of a steel structure, is welded through section steels such as angle steel and the like, is designed according to the mass of the trolley 6 and carrying conditions, and is mainly used for checking and calculating the bearing capacity and the rigidity; the designed service life of the ultra-high-speed impact test system is 15 years, and factors such as corrosion resistance, moisture resistance, water resistance and the like are considered because the test system is constructed outdoors.
In this embodiment, the specific test flow of the ultra-high speed impact test system is as follows: firstly, adjusting the type of the trolley 6 impacted, the quality of the trolley 6 and the quality distribution of the trolley 6 according to the test requirements; debugging the ultra-dynamic acquisition system 8 to enable the ultra-dynamic acquisition system to enter a standby state; secondly, the control system 4 controls the driving system 2 to drive the trolley 6 to accelerate, controls the trolley 6 to meet a preset speed before reaching a release point according to requirements, and then keeps moving at a constant speed to the release point; in the process of uniform motion of the trolley 6, the attitude adjusting and locking and releasing system 3 is controlled by the control system 4 to adjust the lifting angle of the trolley 6, so that the requirements of the structure on the impact height and the impact angle on the impact working condition are met; thirdly, after the trolley 6 reaches a release point, the posture adjustment and locking release system 3 is controlled by the control system 4, after the fixation of the trolley 6 and the driving system 2 is released, the control system 4 controls the driving system 2 to brake emergently, at the moment, the trolley 6 is released, and the ultra-dynamic acquisition system 8 is synchronously triggered to start acquiring impact data at the release moment; and finally, the driving system 2 continues to brake, gradually decelerates to be static and then recovers, and the test is completed, wherein a specific flow is shown in fig. 4.
The second embodiment is as follows: the present embodiment is described with reference to fig. 5 to 6, and the present embodiment is further limited to a high-speed magnetic levitation driven ultra-high speed impact test system according to the first embodiment, in the present embodiment, the ultra-high speed impact test system further includes an auxiliary protection system 5;
the auxiliary protection system 5 comprises a protective net 5-1, an energy absorption recovery device 5-2 and a retaining wall 5-3;
the protective net 5-1 is arranged at a curve area of a deceleration section of the track system 1 and is positioned between the track system 1 and the planned impacted body 7;
the retaining wall 5-3 is arranged at the tail end of the deceleration section of the track system 1, and the retaining wall 5-3 is made of reinforced concrete;
the energy absorption recovery device 5-2 is arranged in a deceleration section of the track system 1, and the energy absorption recovery device 5-2 preferentially stops the retaining wall 5-3 from contacting the trolley 6;
the energy absorption recovery device 5-2 comprises a hydraulic buffer device 5-2-1 and a metal foam energy absorption device 5-2-2;
the metal foam energy absorption device 5-2-2 is arranged between the hydraulic buffer device 5-2-1 and the stop wall 5-3.
In the present embodiment, the protection net 5-1 is used to prevent the planned impacted body 7 from being damaged when the drive system 2 flies out due to an excessive centrifugal force; the energy absorption recovery device 5-2 adopts a two-stage energy absorption form, wherein the first stage is a hydraulic buffer device 5-2-1, the second stage is a metal foam energy absorption device 5-2-2, when the energy of the driving system 2 is small, the recovery of the driving system 2 can be completed only through the first stage, and when the energy of the driving system 2 is overlarge, the hydraulic buffer device 5-2-1 and the metal foam energy absorption device 5-2-2 are sequentially triggered; when the energy absorption energy of the energy absorption recovery device 5-2 is insufficient, the retaining wall 5-3 serves as a last set of protection system to prevent the driving system 2 from flying out of the track system 1.
The third concrete implementation mode: the embodiment is described with reference to fig. 7, and the embodiment is further limited to a high-speed magnetic levitation driven ultra-high speed impact test system according to the second embodiment, in the embodiment, the track system 1 includes a first track 1-1, a support beam 1-2 and a plurality of buttresses 1-3;
the supporting beam 1-2 is fixed at the top ends of the plurality of buttresses 1-3, and the bottom ends of the plurality of buttresses 1-3 are fixed on the ground;
the first track 1-1 is laid on the support beam 1-2;
the support beam 1-2 and the plurality of buttresses 1-3 are made of reinforced concrete.
In the embodiment, the buttresses 1-3 are independent pile foundation structures, and meanwhile, requirements such as the mass and the operation condition of the trolley 6 are considered, the design requirements of bearing capacity and structural rigidity are considered by the support beams 1-2, and ramp design is added in a curve section, namely, a slope with the maximum angle of 6 degrees is radially added on an outer rail of the first track 1-1 relative to an inner rail, so that the centripetal force of the driving system 2 in the running process of the curve section is provided, and the stability of the whole structure is improved.
The fourth concrete implementation mode: in this embodiment, the high-speed magnetic levitation driven ultra-high-speed impact test system according to the third embodiment is further defined, in this embodiment, the driving system 2 includes a traction power supply system, a levitation steering system, and an emergency braking system;
the traction power supply system is used for drawing the trolley 6 and accelerating the trolley 6;
a levitation steering system for adjusting the advancing direction of the trolley 6;
and the emergency braking system is used for emergency braking.
In the present embodiment, the devices such as the rectifier, the inverter, and the motor stator included in the traction power supply system are all installed on the ground, and the power required for operating the drive system 2 is supplied to the ground long stator coil.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 8 to 9, and is further limited to a high-speed magnetic levitation driven ultra-high speed impact test system according to the fourth embodiment, in the present embodiment, the levitation steering system includes a levitation chassis 2-1, a bogie 2-2, an electromagnet 2-3, and a pedestal 2-4;
the suspension frame 2-1 is arranged on the track system 1, and the bogies 2-2 are arranged on two sides of the track system 1;
the electromagnet 2-3 is connected with the bogie 2-2 through a suspension frame 2-1;
the bottom of the pedestal 2-4 is arranged on the suspension frame 2-1, and the top of the pedestal 2-4 is used for arranging the attitude adjusting and locking releasing system 3.
In the embodiment, the electromagnet 2-3 is connected with the supporting arm of the bogie 2-2 through the suspension frame 2-1 to achieve force transmission and relative motion compensation between the electromagnet 2-3 and the bogie 2-2, the bogie 2-2 is connected with the bottom end of the pedestal 2-4 based on the suspension frame 2-1 to achieve transmission and relative motion compensation between the pedestal 2-4 and the bogie 2-1 for suspension force and guiding force, and rolling of the pedestal 2-4 and upper equipment relative to the bogie 2-2 is inhibited, so that vertical and lateral vibration and impact are relieved.
The sixth specific implementation mode: the embodiment is described with reference to fig. 10, and is further limited to a high-speed magnetic levitation driven ultra-high speed impact test system according to the fifth embodiment, wherein the emergency braking system comprises vertical supporting devices 2-5, frames 2-6, a plurality of excitation electrodes 2-7, magnetic yokes 2-8, transverse hinge devices 2-9, longitudinal hinge devices 2-10 and wear plates 2-11;
the excitation electrodes 2-7 are distributed in sequence along the advancing direction of the driving system 2 and are arranged in the frame 2-6;
the transverse hinging devices 2-9, the longitudinal hinging devices 2-10 and the vertical supporting devices 2-5 are respectively connected with the suspension frame 2-1 through hinging in the transverse direction, the longitudinal direction and the vertical direction;
the wearing plate 2-11 is arranged between the inner side of the frame 2-6 and the suspension frame 2-1; the yoke 2-8 covers the outside of the frame 2-6.
In the embodiment, the emergency braking systems are positioned at the left and right sides of the middle area of each section of pedestal 2-4, and the driving system is rapidly decelerated through an eddy current braking electromagnetic device and finally stopped and recovered.
In the present embodiment, as shown in fig. 9, the number of the field electrodes 2 to 7 is 6; after safety braking is implemented, the control system 4 supplies direct current to the excitation coils of the excitation electrodes 2 to 7, and strong electromagnetic fields are generated around the electromagnets 2 to 3; when the first track 1-1 and the electromagnet 2-3 do relative motion, the first track 1-1 cuts magnetic induction lines in a magnetic field to do relative motion, the lenz law and the faraday electromagnetic induction law can obtain that a dynamic potential is generated in the first track 1-1, and simultaneously, because the running speed of the driving system 2 changes nonlinearly in the braking process, an induced dynamic potential also exists in the first track 1-1, so that the magnetic field line of an air gap between the first track 1-1 and the exciting electrode 2-7 is distorted, the surface perpendicular to the first track 1-1 is converted into train running reverse inclination, so that perpendicular component force and normal component force are generated, and the driving system 2 is braked.
The seventh embodiment: the present embodiment is described with reference to fig. 11 to 18, and is further limited to a high-speed magnetic levitation driven ultra-high speed impact test system according to a sixth embodiment, in the present embodiment, the attitude adjusting and locking releasing system 3 includes an attitude adjusting device 3-1, a support 3-2, a second track 3-3 and a locking releasing device 3-4;
the posture adjusting device 3-1 comprises two groups of hydraulic supporting systems, wherein one group of hydraulic supporting systems is arranged at the bottom of the front end of the support 3-2, and the other group of hydraulic supporting systems is arranged at the bottom of the rear end of the support 3-2;
the second track 3-3 is arranged on the top surface of the support 3-2 along the front-back direction;
the locking and releasing device 3-4 comprises an I-shaped sliding block 3-4-1, a releasing arm 3-4-2 and a fastener 3-4-3;
the I-shaped sliding block 3-4-1 is fixed on a second track 3-3 through an electromagnet, the release arm 3-4-2 is connected to the I-shaped sliding block 3-4-1 in a rotating connection mode, and the tightener 3-4-3 is fixed on the I-shaped sliding block 3-4-1; a protrusion is arranged at the rotating end of the release arm 3-4-2, when the release arm 3-4-2 is in an upright state, the protrusion of the release arm 3-4-2 and the fastener 3-4-3 are in a locking state, and when the protrusion of the release arm 3-4-2 and the fastener 3-4-3 are unlocked, the release arm 3-4-2 is inclined to be in a horizontal state; and the release arm 3-4-2 is also provided with an electromagnet.
In the embodiment, the posture adjusting device 3-1 is used for adjusting the front height and the rear height to form a height difference so as to achieve the required impact angle and height of the trolley 6, and meanwhile, sliding rails are arranged at the joints of the trolley and the two ends of the support 3-2, so that the self-adaption of the whole system in the angle changing process is facilitated; the support 3-2 is used for bearing the dead weight of the trolley 6, and meanwhile, sliding rails are arranged inside the front side and the rear side, so that the track system 1 can adapt to different trolley sizes conveniently; two groups of rails 3-3 are arranged together and used for providing rails for the front and rear movement of the lateral locking and releasing system and can move left and right along the sliding rails in the support 3-2, so that the sizes of different trolleys 6 can be better adapted; the three groups of locking and releasing devices 3-4 are arranged, one group of locking and releasing devices 3-4 are welded at the front end of the support 3-2 and used for fixing the head of the trolley 6, and the other two groups of locking and releasing devices 3-4 are arranged on the two groups of second tracks 3-3 on the left side and the right side through I-shaped sliding blocks 3-4-1; in the installation process of the trolley 6, the size adjustment in the left and right direction can be carried out by sliding the second track 3-3 along the sliding rail in the support 3-2, the second track is locked with the sliding rail by the posture adjusting device 3-1 after the size of the trolley 6 is adapted to avoid lateral movement, the size adjustment in the front and back direction can be carried out by sliding the I-shaped slide block 3-4-1 along the first track 1-1 on the track system 1, the electromagnet in the I-shaped slide block 3-4-1 is opened to be closely attracted with the second track 3-3 to avoid front and back sliding after the size of the trolley 6 is adapted to the size of the trolley 6, the adjustment of the relative height can be completed according to the replacement of the release arms 3-4-2 with different sizes, the inclination angle of the release arm 3-4-2 is adjusted after the length of the release arm 3-4-2 is determined, the buckle 3-4-3 is locked, and the electromagnet on the release arm 3-4-2 is opened to enable the release arm to be closely attached to the trolley 6 in an adsorption way To avoid any directional movement of the trolley 6 during operation of the drive system 2. When the trolley 6 reaches the release condition, the electromagnet at the top end of the release arm 3-4-2 is powered off, the driving system 2 is braked emergently, and meanwhile, the fastener 3-4-3 is bounced to enable the release arm 3-4-2 to topple downwards, so that the release arm 3-4-2 and the trolley 6 are prevented from being scratched in the release process of the trolley 6.
In the embodiment, the trolley 6 realizes the quality adjustment within 20t-300t according to the technical requirements, and can select various types of full-scale or large-scale models such as airplanes and missiles with different models, in fig. 14, the airplane is selected as the trolley 6 for testing, and in fig. 15, the missile is selected as the trolley 6 for testing.
In the present embodiment, when the posture adjustment of the carriage 6 is performed by using the posture adjustment and lock release system 3, the posture of the carriage 6 is specifically adjusted into three kinds, the first kind is a dive posture fixation, which is specifically shown in fig. 16; the second is fixed in the upward-flushing posture, which is particularly shown in fig. 17; the first is horizontal attitude fixation, see in particular fig. 18.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 19, and is further limited to the seventh embodiment, in which the control system 4 includes a driving control system 4-1, a trolley loading control system 4-2, an attitude adjustment control system 4-3, a locking and releasing control system 4-4, and a data acquisition control system 4-5;
the drive control system 4-1 is used for monitoring the speed of the drive system 2 and adjusting the running mode of the drive system 2 during the test period;
the trolley loading control system 4-2 is used for controlling the posture adjusting and locking and releasing system 3 to adjust the left and right relative positions of the trolley 6 and the track system 1 and controlling the posture adjusting and locking and releasing system 3 to adjust the mass distribution of the trolley 6 on the driving system 2 according to the size of the trolley 6;
the attitude adjustment control system 4-3 is used for controlling the attitude adjustment and locking release system 3 to perform attitude adjustment on the trolley 6 during constant-speed running according to the pre-input impact height and angle of the trolley 6;
the locking and releasing control system 4-4 is used for controlling the attitude adjusting and locking and releasing system 3 to finish releasing speed calibration at a releasing point and controlling the attitude adjusting and locking and releasing system 3 to finish releasing traction of the trolley 6 and the driving system 2;
and the data acquisition control system 4-5 is used for triggering the ultra-dynamic data acquisition system 8 to start to acquire the impact data when the trolley 6 is released.
Claims (8)
1. A high-speed magnetic levitation driven ultra-high-speed impact test system is characterized by comprising a track system (1), a driving system (2), a posture adjusting and locking releasing system (3), a control system (4), a trolley (6), a planned impact body (7) and an ultra-dynamic data acquisition system (8);
the track system (1) comprises the following components from the beginning end to the tail end in sequence: an acceleration section, a constant speed section and a deceleration section; the tail end of the constant speed section is provided with a release point, the deceleration section comprises a curve area and a straight area, the initial end of the curve area is connected with the tail end of the constant speed section, and the constant speed section of the track system (1) is tangent to the curve area of the deceleration section of the track system (1);
the planned impacted body (7) is arranged on the outer side of the curve area, and the planned impacted body (7) is positioned on the extension line of the constant-speed section of the track system (1);
the trolley (6) is assembled on the driving system (2) from the beginning end of the acceleration section, the trolley (6) and the driving system (2) synchronously run in an accelerated mode after assembly, when the trolley (6) reaches the tail end of the acceleration section, the trolley reaches a preset speed, and then the trolley enters the constant speed section; in the uniform speed section, the trolley (6) and the driving system (2) synchronously run at a uniform speed, and the posture adjusting and locking and releasing system (3) is controlled by the control system (4) to adjust the impact height and the impact angle of the trolley (6); when the trolley (6) reaches a release point, the control system (4) controls the posture adjustment and locking release system (3) to release the synchronous operation of the driving system (2) and the trolley (6), and controls the driving system (2) to enter an emergency braking state through the control system (4), at the moment, the trolley (6) is separated from the driving system (2) and flies to a planned impacted body (7), impact occurs, and the ultra-dynamic data acquisition system (8) is synchronously triggered to start to acquire impact data; and after entering an emergency braking state, the driving system (2) enters a deceleration section of the track system (1) and gradually decelerates to be static, so that the ultra-high speed impact test is completed.
2. A high speed magnetic levitation driven ultra high speed impact test system as claimed in claim 1, further comprising an auxiliary protection system (5);
the auxiliary protection system (5) comprises a protective net (5-1), an energy absorption recovery device (5-2) and a stop wall (5-3);
the protective net (5-1) is arranged at a curve area of a deceleration section of the track system (1) and is positioned between the track system (1) and the planned impacted body (7);
the retaining wall (5-3) is arranged at the tail end of the deceleration section of the track system (1), and the retaining wall (5-3) is made of reinforced concrete;
the energy absorption recovery device (5-2) is arranged in a deceleration section of the track system (1), and the energy absorption recovery device (5-2) preferentially stops the retaining wall (5-3) from contacting the trolley (6);
the energy absorption recovery device (5-2) comprises a hydraulic buffer device (5-2-1) and a metal foam energy absorption device (5-2-2);
the metal foam energy absorption device (5-2-2) is arranged between the hydraulic buffer device (5-2-1) and the retaining wall (5-3).
3. A high speed magnetic levitation driven ultra high speed impact test system as claimed in claim 2, wherein the track system (1) comprises a track number one (1-1), support beams (1-2) and a plurality of buttresses (1-3);
the supporting beams (1-2) are fixed at the top ends of the supporting piers (1-3), and the bottom ends of the supporting piers (1-3) are fixed on the ground;
the first track (1-1) is laid on the support beam (1-2);
the supporting beam (1-2) and the plurality of buttresses (1-3) are all made of reinforced concrete.
4. A high speed magnetic levitation driven ultra high speed impact test system as claimed in claim 3, wherein said drive system (2) comprises a traction power supply system, a levitation steering system and an emergency braking system;
the traction power supply system is used for traction the trolley (6) and accelerating the trolley (6);
the suspension steering system is used for adjusting the advancing direction of the trolley (6);
and the emergency braking system is used for emergency braking.
5. A high speed magnetic levitation driven ultra high speed impact test system as claimed in claim 4, wherein said levitation steering system comprises a levitation chassis (2-1), a bogie (2-2), an electromagnet (2-3) and a pedestal (2-4);
the suspension frame (2-1) is arranged on the track system (1), and the bogies (2-2) are arranged on two sides of the track system (1);
the electromagnet (2-3) is connected with the bogie (2-2) through the suspension frame (2-1);
the bottom of the pedestal (2-4) is arranged on the suspension frame (2-1), and the top of the pedestal (2-4) is used for arranging a posture adjusting and locking releasing system (3).
6. A high speed magnetic levitation driven ultra high speed impact test system according to claim 5, wherein the emergency braking system comprises vertical support means (2-5), a frame (2-6), a plurality of exciter poles (2-7), a magnetic yoke (2-8), transverse hinge means (2-9), longitudinal hinge means (2-10) and wear plates (2-11);
the excitation electrodes (2-7) are sequentially distributed along the advancing direction of the driving system (2) and are arranged in the frame (2-6);
the transverse hinging devices (2-9), the longitudinal hinging devices (2-10) and the vertical supporting devices (2-5) are respectively connected with the suspension frame (2-1) through hinging in the transverse direction, the longitudinal direction and the vertical direction;
the wearing plate (2-11) is arranged between the inner side of the frame (2-6) and the suspension rack (2-1); the magnetic yoke (2-8) covers the outer side of the frame (2-6).
7. The system for testing the ultra-high-speed impact driven by the high-speed magnetic levitation according to claim 6, wherein the attitude adjusting and locking releasing system (3) comprises an attitude adjusting device (3-1), a support (3-2), a second track (3-3) and a locking releasing device (3-4);
the posture adjusting device (3-1) comprises two groups of hydraulic supporting systems, wherein one group of hydraulic supporting systems is arranged at the bottom of the front end of the support (3-2), and the other group of hydraulic supporting systems is arranged at the bottom of the rear end of the support (3-2);
the second track (3-3) is arranged on the top surface of the support (3-2) along the front-back direction;
the locking and releasing device (3-4) comprises an I-shaped sliding block (3-4-1), a releasing arm (3-4-2) and a fastener (3-4-3);
the I-shaped sliding block (3-4-1) is fixed on the second track (3-3) through an electromagnet, the release arm (3-4-2) is connected to the I-shaped sliding block (3-4-1) in a rotating connection mode, and the tightener (3-4-3) is fixed on the I-shaped sliding block (3-4-1); a protrusion is arranged at the rotating end of the release arm (3-4-2), when the release arm (3-4-2) is in an upright state, the protrusion of the release arm (3-4-2) and the fastener (3-4-3) are in a locking state, and when the protrusion of the release arm (3-4-2) and the fastener (3-4-3) are unlocked, the release arm (3-4-2) is inclined to be in a horizontal state; and the release arm (3-4-2) is also provided with an electromagnet.
8. The system for testing the ultrahigh-speed impact of the high-speed magnetic levitation driving according to claim 7, wherein the control system (4) comprises a driving control system (4-1), a trolley loading control system (4-2), an attitude adjusting control system (4-3), a locking and releasing control system (4-4) and a data acquisition control system (4-5);
a drive control system (4-1) for monitoring the speed of the drive system (2) and adjusting the mode of operation of the drive system (2) during the test;
the trolley loading control system (4-2) is used for controlling the posture adjusting and locking and releasing system (3) to adjust the left and right relative positions of the trolley (6) and the track system (1) and controlling the posture adjusting and locking and releasing system (3) to adjust the mass distribution of the trolley (6) on the driving system (2) according to the size of the trolley (6);
the attitude adjustment control system (4-3) is used for controlling the attitude adjustment and locking release system (3) to adjust the attitude of the trolley (6) during constant-speed running according to the pre-input impact height and angle of the trolley (6);
the locking and releasing control system (4-4) is used for controlling the posture adjustment and locking and releasing system (3) to finish releasing speed calibration at a releasing point and controlling the posture adjustment and locking and releasing system (3) to finish releasing traction of the trolley (6) and the driving system (2);
and the data acquisition control system (4-5) is used for triggering the ultra-dynamic data acquisition system (8) to start to acquire the impact data when the trolley (6) is released.
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| CN115060448B (en) * | 2022-06-22 | 2024-03-22 | 江苏德纳精工轴承有限公司 | Test device for impact resistance of bearing |
| CN116124402B (en) * | 2023-01-30 | 2023-07-21 | 哈尔滨工业大学 | Test system for simulating impact of flying object |
| CN116164924B (en) * | 2023-04-24 | 2023-07-28 | 山东海鲲数控设备有限公司 | Shock resistance testing device for machine tool protective cover |
| CN117125267B (en) * | 2023-10-26 | 2024-02-02 | 中国飞机强度研究所 | Impact power performance test system and method for landing gear of carrier-based aircraft |
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| CN103245479B (en) * | 2013-04-11 | 2016-07-06 | 莫凡 | Magnetic levitation type impact test platform |
| CN104931222B (en) * | 2015-05-04 | 2018-04-10 | 中国航天空气动力技术研究院 | Machine bullet separated track captive test system |
| JP6718333B2 (en) * | 2016-08-10 | 2020-07-08 | Imv株式会社 | Electrokinetic test equipment |
| CN106441778B (en) * | 2016-11-25 | 2019-08-02 | 陕西千山航空电子有限责任公司 | A kind of logger collision impact pilot system and test method |
| KR101917474B1 (en) * | 2016-12-23 | 2018-11-09 | 주식회사 포스코 | Apparatus for testing crash |
| CN108662952B (en) * | 2018-04-18 | 2019-12-27 | 西北机电工程研究所 | Testing system for projectile damage motion target plate |
| CN109633497B (en) * | 2019-01-03 | 2021-03-16 | 中车青岛四方机车车辆股份有限公司 | Electromagnet test stand and detection platform |
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