An experimental device for simulating brain injury caused by typical traffic accidents

Abstract

The application discloses a kind of brain injury experimental device of simulating typical traffic accident, belongs to experimental research instrument experimental research instrument field.The device includes bearing car, for placing experimental body, bearing car includes car box and wheel, wheel is rotatably arranged on car box, experimental device further includes: track plate;Firing device, fixedly arranged on track plate, for launching bearing trolley, so that it generates initial moving speed;Electromagnet, electromagnet and bearing trolley are located on the two sides of track plate, electromagnet is fixedly arranged on track plate;Wherein, electromagnet is powered on, can adsorb wheel, to increase the friction between wheel and track plate.The application can more realistically simulate the deceleration condition brought by actual brake, and the damage evaluation brought by different deceleration can also be simulated by adjusting the current intensity of electromagnet, so that the experimental data is closer to the real situation, and the accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of experimental research apparatus, in particular to a kind of simulation typical traffic accident's brain injury experimental device. BACKGROUND

[0002] Craniocerebral impact injury is a common injury in traffic accidents, according to domestic and foreign statistical data, the incidence of craniocerebral impact injury in traffic accidents is as high as 54%, which is the primary cause of death and disability after injury. Acceleration brain injury is a brain injury caused by a hard object hitting a stationary head; deceleration brain injury is a brain injury caused by a moving head and skull suddenly colliding with an external object, forcing it to change from dynamic to static; diffuse axonal injury refers to a primary brain injury that mainly diffuses in the white matter and is mainly characterized by axonal injury.

[0003] In complex traffic accidents, the situation is complex and changeable. For example, when a normal vehicle rear-ends another vehicle, it will hit the front vehicle at a certain speed, and the vehicle will suddenly decelerate due to resistance, forming a deceleration brain injury; when a vehicle has a traffic accident and mistakenly uses the accelerator as the brake, the vehicle will suddenly accelerate and hit an object or another vehicle, causing both acceleration and deceleration brain injuries; when a vehicle hits an object or another vehicle and then overturns and rotates, it will also cause diffuse axonal injury.

[0004] The above brain injuries occur frequently in traffic accidents, but due to the complexity of the situation and the fact that multiple injuries often coexist, the diagnosis of this disease is still in its early stages, there is no uniform diagnostic standard, and the relationship with other types of brain injury is not well understood, which hinders the understanding of the nature of the disease and makes it difficult to make breakthroughs in treatment measures.

[0005] In the prior art, some researchers have designed some simulation test devices to simulate the injury of small animals such as mice after acceleration, deceleration and rotation. For example, the invention patent with application number 201910069843.X discloses a simulation traffic accident craniocerebral deceleration injury experimental device, the invention patent with application number 202010183348.4 discloses a simulation typical traffic accident craniocerebral injury experimental device, and the invention patent with application number 201410383601.5 discloses a diffuse axonal injury experimental device.

[0006] However, the above-mentioned patent schemes are only simple simulations of acceleration, deceleration, rotation and the like, and are quite different from real traffic conditions. The simulation process is a single condition simulation after idealizing the accident, and the experimental data obtained is quite different from the real traffic conditions. For example, the application number is 201910069843.X, and the name is a simulation of traffic accident in brain deceleration injury experiment device. The deceleration is formed by the collision of the experimental box and the deceleration device. However, in actual traffic accidents, not all situations will collide, such as when the driver brakes in time and does not collide, the deceleration injury that occurs cannot be effectively simulated, in addition, the simulation time of diffuse axonal injury is also not the time node that occurs in actual traffic accidents. In actual accidents, deceleration generally occurs first, and the vehicle decelerates and collides with objects or vehicles, and then overturns and / or rotates due to the loss of control of the vehicle. The sequence of different types of brain injury leads to different actual injury consequences, which is quite different from the actual situation. SUMMARY

[0007] The present application provides a brain injury experiment device for simulating typical traffic accidents, which can solve the problem of poor experimental effect of the brain injury experiment device for simulating typical traffic accidents in the prior art and the inability to simulate actual traffic conditions.

[0008] A brain injury experiment device for simulating typical traffic accidents, comprising a carrying vehicle for placing an experimental body, the carrying vehicle comprising a vehicle box and wheels, the wheels being rotatably arranged on the vehicle box, the experimental device further comprising:

[0009] a track plate;

[0010] a launching device fixedly arranged on the track plate for launching the carrying vehicle to generate an initial moving speed;

[0011] an electromagnet, the electromagnet and the carrying vehicle being located on both sides of the track plate, the electromagnet being fixedly arranged on the track plate; wherein,

[0012] when the electromagnet is powered, it can attract the wheels to increase the friction between the wheels and the track plate.

[0013] More preferably, the wheels comprise an outer rim and a magnetic block, the magnetic block being fixedly arranged in the outer rim, and the outer rim being rotatably arranged on the vehicle box.

[0014] More preferably, it further comprises a resistance magnetic block made of a magnetic material and located on the same side of the track plate as the carrying vehicle.

[0015] More preferably, the vehicle box further comprises an impact box and a buffer spring, the vehicle box has a receiving cavity, the impact box and the buffer spring are located in the receiving cavity, and two ends of the buffer spring are fixedly connected to the impact box and the vehicle box respectively, and the buffer spring is located on a side of the impact box away from the launching device.

[0016] More preferably, the overturning device comprises a mobile power supply, a containing box, a driving coil, a first driving magnetic block and a second driving magnetic block.

[0017] The containing box is rotatably arranged in the impact box, and the containing box is used for placing experimental subjects.

[0018] The driving coil is arranged on the containing box, the mobile power supply is arranged in the containing box, and the driving coil is connected to the mobile power supply through a brush.

[0019] The first driving magnetic block and the second driving magnetic block are fixedly arranged on two sides of the track plate respectively, and opposite poles of the first driving magnetic block and the second driving magnetic block are arranged oppositely.

[0020] The driving coil is used for cooperating with the first driving magnetic block and the second driving magnetic block to drive the containing box to rotate.

[0021] The present application provides a kind of brain injury experimental device of typical traffic accident simulation, by track plate simulation road, by electromagnet adsorption wheel, make the friction of wheel and track plate increase to realize deceleration, can more real simulation the deceleration condition brought by actual brake, by adjusting the current intensity of electromagnet can also simulate the damage assessment brought by different deceleration, so that experimental data is closer to real situation, improve accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The present application provides a kind of brain injury experimental device of typical traffic accident simulation structure diagram;

[0023] Figure 2 The top view of Figure 1 ;

[0024] Figure 3 The cross-sectional structure diagram of Figure 1 ;

[0025] Figure 4 The structure diagram of wheel;

[0026] Figure 5 The structure diagram of overturning device;

[0027] Figure 6 The top view of Figure 5 ;

[0028] Description of reference numerals:

[0029] 10 track plate; 11 electromagnet; 20 launching device; 30 first driving magnetic block; 31 second driving magnetic block; 40 resistance magnetic block; 50 carrier vehicle; 51 wheel; 511 outer wheel rim; 512 magnetic block; 513 rotating shaft; 52 buffer spring; 53 impact box; 531 containing box; 5311 cover plate; 532 driving coil; 54 power supply; 55 brush. DETAILED DESCRIPTION

[0030] A specific embodiment of the present invention is described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0031] Example 1:

[0032] like Figures 1 to 2 As shown, an embodiment of the present invention provides an experimental device for simulating craniocerebral injury caused by a typical traffic accident, including a carrier vehicle 50 for placing an experimental subject. The experimental subject can be a test animal such as a mouse in the prior art. The carrier vehicle 50 includes a vehicle box and wheels 51. The wheels 51 are rotatably mounted on the vehicle box. The structure of the vehicle box is the same as that of a vehicle box with running wheels in the prior art. The experimental device also includes:

[0033] The track plate 10 is a long strip-shaped plate structure used to simulate the road surface and play a supporting role;

[0034] The launching device 20 is fixedly mounted on the track plate 10 and is used to launch the trolley to generate an initial moving speed. Specifically, the launching device 20 can adopt a device for generating an initial speed in the prior art, such as an electromagnetic launching device 20, a cylinder, an electric telescopic rod, and the like. There are no special requirements for the structure.

[0035] The electromagnet 11 and the carrying trolley are located on both sides of the track plate 10, as shown in FIG. Figure 1 As shown, the track plate 10 is placed horizontally, and the electromagnet 11 is fixedly arranged on the lower side of the track plate 10. When the electromagnet 11 is energized, it can absorb the wheel 51 to increase the friction between the wheel 51 and the track plate 10.

[0036] Specifically, such as Figure 4As shown, the wheel 51 comprises an outer rim 511 and a magnetic block 512, the outer rim 511 is rotatably arranged on the vehicle box through a rotating shaft 513, and the magnetic block 512 is fixedly arranged in the outer rim 511. The magnetic block 512 can be in a ring structure or a block structure and is embedded in the outer rim 511. It can be understood that the entire wheel 51 can also be made of a magnetic material directly. In order to more truly simulate the actual road deceleration situation, the outer rim 511 is made of the same rubber material as the vehicle tire, and the magnetic block 512 is made of a magnetic material and is embedded in the outer rim 511.

[0037] In work, the bearing vehicle 50 generates an initial speed through the launching device 20, moves along the extension direction of the track plate 10, and when moving to the upper side of the electromagnet 11, the electromagnet 11 is powered (and can also be powered before the bearing vehicle 50 generates the initial speed). Due to the magnetic field generated by the electromagnet 11, the adsorption force is generated between the electromagnet 11 and the magnetic block 512, so that the pressure between the outer rim 511 and the track plate 10 is increased, so that the friction force received by the bearing vehicle 50 is increased, thereby simulating the situation when the vehicle brakes. By adjusting the size of the current of the electromagnet 11, the experimental situation under different deceleration can be simulated.

[0038] Example two:

[0039] On the basis of example one, in order to simulate the rear-end deceleration situation, since the rear-end driver brakes first to produce deceleration, due to the speed being too fast, the two vehicles collide, and after the collision, the two vehicles will have a continuous displacement, and the front vehicle also bears the same friction force until the speed is zero.

[0040] Therefore, the embodiment also comprises a resistance magnetic block 40, which is made of a magnetic material and is located on the same side of the track plate 10 as the bearing vehicle 50.

[0041] In work, the resistance magnetic block 40 is adsorbed with the electromagnet 11, so that the resistance magnetic block 40 is placed on the track plate 10. The bearing vehicle 50 is first adsorbed and decelerated by the electromagnet 11, and then collides with the resistance magnetic block 40. After colliding with the resistance magnetic block 40, the resistance magnetic block 40 and the bearing vehicle 50 both generate a certain friction force due to the adsorption of the electromagnet 11, so that the speed gradually decreases until zero. This process better simulates the impact situation in the real rear-end collision, and is closer to the actual situation compared with the spring device generating resistance (the spring resistance gradually increases after compression, while the friction force is constant, which does not conform to the actual situation), so that the experimental data is more real.

[0042] Example three:

[0043] Because the acceleration of the vehicle is slow when the vehicle is running normally, it generally does not cause damage. However, when the initial speed is generated by the launching device 20, the acceleration is large and the initial speed is high, which is inconsistent with the actual situation and may cause acceleration damage, resulting in deviation of experimental data.

[0044] Therefore, on the basis of Embodiment One or Two, as shown in Figure 3 , the present embodiment further comprises an impact box 53 and a buffer spring 52, and the vehicle box has a receiving cavity, and the impact box 53 and the buffer spring 52 are located in the receiving cavity, wherein the impact box 53 is naturally placed in the receiving cavity, and the two ends of the buffer spring 52 are fixedly connected to the impact box 53 and the vehicle box, respectively, and the buffer spring 52 is located on the side of the impact box 53 away from the launching device 20.

[0045] When the bearing vehicle 50 is subjected to a large acceleration due to impact, the impact box 53 is not directly subjected to impact, and when the bearing vehicle 50 moves initially, the impact box 53 is subjected to a small acceleration due to inertia. When the bearing vehicle 50 moves at a large speed, the impact box 53 is gradually accelerated at a small acceleration by the buffer spring 52, which is first driven by the bearing vehicle 50 and is elongated, and the impact box 53 is subjected to a pulling force (and a friction force from the vehicle box of the bearing vehicle 50), thereby avoiding acceleration brain damage caused by a large acceleration. After the speed of the bearing vehicle 50 gradually decreases due to the friction force, the buffer spring 52 gradually contracts, so that the speed of the impact box 53 is consistent with the speed of the bearing vehicle 50. Then, the bearing vehicle 50 drives the impact box 53 into the influence range of the electromagnet 11, and the subsequent experimental process is performed.

[0046] Embodiment Four:

[0047] In actual traffic accidents, the vehicle often overturns and / or rotates after impact, thereby causing diffuse axonal injury, and the injury often occurs synchronously with the deceleration process.

[0048] Therefore, on the basis of any one of Embodiments One to Three, as shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , the present embodiment further comprises a turnover device, which comprises a mobile power supply 54, a containing box 531, a driving coil 532, a first driving magnetic block 30 and a second driving magnetic block 31.

[0049] The containing box 531 is rotatably arranged in the impact box 53 through a shaft body, and the containing box 531 is used for placing experimental subjects; in the present embodiment, the containing box 531 adopts a columnar hollow structure, and a cover plate 5311 is arranged on the containing box 531. The experimental subjects (mice) can be placed in the containing box 531 by opening the cover plate 5311, and then the cover plate 5311 can be closed.

[0050] The driving coil 532 is arranged around the accommodating box 531, as shown in the figure. Figure 5 The driving coil 532 is arranged around the accommodating box 531, as shown in the figure.

[0051] As shown in the figure. Figure 1 The first driving magnetic block 30 and the second driving magnetic block 31 are respectively fixedly arranged on the two sides of the track plate 10, and the opposite magnetic poles of the first driving magnetic block 30 and the second driving magnetic block 31 are arranged oppositely; wherein the driving coil 532 is used for cooperating with the first driving magnetic block 30 and the second driving magnetic block 31 to drive the accommodating box 531 to rotate.

[0052] When the carrying vehicle 50 moves to the first driving magnetic block 30 and the second driving magnetic block 31, the current in the driving coil 532 generates a magnetic field, which interacts with the magnetic field generated by the first driving magnetic block 30 and the second driving magnetic block 31, thereby driving the accommodating box 531 to rotate, and the rotation process can coincide with the deceleration of the carrying vehicle 50 by the electromagnet 11, thereby being more close to the actual situation and improving the simulation effect.

[0053] The above only discloses several specific embodiments of the present application, but the embodiments of the present application are not limited to this, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A craniocerebral injury experimental device simulating a typical traffic accident, comprising a carrier vehicle (50) for placing a test subject, wherein the carrier vehicle (50) comprises a vehicle box and wheels (51), wherein the wheels (51) are rotatably arranged on the vehicle box, and wherein: The experimental device also includes: Track plate (10); A launching device (20) is fixedly arranged on the track plate (10) and is used to launch the carrier vehicle to generate an initial moving speed; An electromagnet (11), the electromagnet (11) and the carrier vehicle are located on both sides of the track plate (10), and the electromagnet (11) is fixedly arranged on the track plate (10); wherein, When the electromagnet (11) is energized, it can adsorb the wheel (51) to increase the friction between the wheel (51) and the track plate (10); It also includes a resistance magnetic block (40), which is made of magnetic material and is located on the same side of the track plate (10) as the carrier vehicle (50); The vehicle box further comprises an impact box (53) and a buffer spring (52), wherein the vehicle box has a receiving cavity, the impact box (53) and the buffer spring (52) are both located in the receiving cavity, the two ends of the buffer spring (52) are respectively fixedly connected to the impact box (53) and the vehicle box, and the buffer spring (52) is located on a side of the impact box (53) away from the launching device (20); It also includes a flipping device, which includes a mobile power supply (54), a containing box (531), a driving coil (532), a first driving magnetic block (30) and a second driving magnetic block (31); The accommodating box (531) is rotatably arranged in the impact box (53), and the accommodating box (531) is used to place the experimental body; The driving coil (532) is wound on the accommodating box (531), the mobile power supply (54) is arranged in the accommodating box (531), and the driving coil (532) is connected to the mobile power supply (54) via a brush (55); The first driving magnetic block (30) and the second driving magnetic block (31) are respectively fixedly arranged on both sides of the track plate (10), and the opposite magnetic poles of the first driving magnetic block (30) and the second driving magnetic block (31) are arranged opposite to each other; wherein, The driving coil (532) is used to cooperate with the first driving magnetic block (30) and the second driving magnetic block (31) to drive the accommodating box (531) to rotate; wherein, The launching device, the first driving magnetic block (30), the second driving magnetic block (31), and the resistance magnetic block are arranged in sequence along the launching direction of the launching device.

2. The experimental device for simulating typical traffic accidents causing craniocerebral injury according to claim 1, characterized in that: The wheel (51) comprises an outer wheel rim (511) and a magnetic block (512), wherein the magnetic block (512) is fixedly arranged in the outer wheel rim (511), and the outer wheel rim (511) is rotatably arranged on the vehicle box.

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