Airbag type righting device and method for rollover truck

Abstract

The invention discloses a rollover truck air bag type righting device and method. The rollover truck air bag type righting device comprises an air bag type jack and an air bag type buffering cushion. The air bag type jack is arranged on the lower portion of the dumping side of the rollover truck and cooperates with the crane to achieve lifting and overturning of the truck body. The air bag type buffer cushion is arranged in a landing area in the aligning direction, and a multi-stage damping mechanism is arranged in the air bag type buffer cushion so as to absorb impact energy and achieve stable landing through controllable deflation. According to the air bag type jack, the independent air pump unit is combined with an inertial sensor and pressure feedback, the inflation rate is dynamically adjusted through the central controller, uniform bearing force distribution of a vehicle body structure is achieved in the centralizing process, and secondary damage caused by local stress concentration is effectively prevented. When the truck returns to fall down, the pre-inflated airbag cushion pad achieves progressive absorption of impact energy in a multi-stage damping and graded pressure relief mode, in the initial stage, the internal pressure of the airbag is used for buffering instantaneous impact, and then the truck stably falls to the ground through controllable deflation. According to the invention, a modular quick-release design is adopted, parallel operation of multiple devices is supported, the accident rescue efficiency is improved, secondary damage is reduced, and the device is suitable for righting rescue scenes of various heavy vehicles.

Description

Technical Field

[0001] The invention relates to the field of emergency rescue of trucks in traffic accidents, and is an airbag type righting device and method for overturned trucks, which is particularly suitable for emergency rescue and vehicle protection after a heavy truck loaded with goods overturns. Background Art

[0002] Heavy-loaded truck rollover accidents are a high-risk type of accident in the field of road transportation, and they often occur on bends, slopes or emergency avoidance scenarios. Heavy-loaded truck rollover accidents are also extremely destructive safety threats in road transportation, and their risk radiation range far exceeds the accident itself. When an accident occurs, the fatality rate of the cockpit due to severe squeezing and deformation is as high as 47%, and the dumped goods may cause a chain collision, forming a secondary accident chain. If hazardous chemicals are transported, the diffusion radius of the leaked substances can reach 800 meters. For example, liquid chlorine concentration in the air of 0.001% can cause death. At the same time, the probability of deflagration caused by static electricity after the fuel tank ruptures exceeds 35%. The economic losses caused by such accidents are also shocking: a single rollover causes an average of 6.2 hours of traffic paralysis, and the direct loss of logistics interruption exceeds 800,000 yuan. If it involves inter-provincial trunk lines, the butterfly effect of supply chain rupture can affect hundreds of companies. What's more serious is that the additional carbon emissions generated by idling vehicles stranded at the accident site can reach 300,000 tons per year, aggravating the environmental burden.

[0003] In this context, rapid and accurate righting and rescue has become a key breakthrough in resolving the crisis. Within two hours after rollover, the frame will accelerate plastic deformation, resulting in a 70% surge in subsequent maintenance costs, and the risk of hazardous chemical leakage increases exponentially over time. Compared with the 32% secondary damage rate of metal structures in traditional lifting rescue, the airbag righting system forms a mechanical balance through distributed high-pressure inflation, which can safely reset the vehicle body within 15-25 minutes, and improve efficiency by 58%. Its value lies not only in saving lives and property, but also in the more far-reaching systemic benefits: Rapid restoration of traffic can reduce the incidence of chain accidents by 30% and improve road network traffic efficiency by 40%, which is of strategic significance for ensuring the smooth flow of logistics arteries and reducing social and economic losses. Therefore, intelligent rescue technology has been upgraded from an auxiliary tool to a core security component of the modern transportation system. Summary of the invention

[0004] The purpose of the present invention is to provide a device and operating method that can quickly and safely right an overturned truck. Through airbag cushioning and controllable pressure relief technology, the problem of impact damage caused by traditional righting can be effectively solved, vehicle maintenance costs can be reduced, and rescue safety can be improved. It is particularly suitable for precise rescue operations of trucks with high centers of gravity.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows.

[0006] 1. Preliminary preparation and equipment inspection 1. Device configuration The airbag jack module is made of high-strength flexible composite materials, equipped with anti-slip patterns, bottom pressure sensors and standardized air path interfaces. The airbag cushion module includes a tear-resistant outer layer, a honeycomb energy-absorbing middle layer and an airtight inner layer. The top is designed with an arc-shaped guide surface, which is pre-arranged according to the projection contour of the truck chassis. Central controller, independent air pump unit, inertial sensor and supporting monitoring terminal.

[0007] 2. On-site evaluation Measure the tilt angle of the overturned truck and the gap between the frame and the ground to determine the insertion position of the airbag jack (at least 3 points). At the same time, plan the layout area of ​​the airbag cushion array based on the number of truck axles and chassis projection size.

[0008] 2. Airbag jack arrangement and coordinated lifting 1. Jack insertion and fixing Insert the airbag jack into the gap between the tilting side frame and the ground to ensure that the anti-skid pattern fits the contact surface of the frame. Connect the air pump unit and pressure sensor to the central controller to complete the multi-airbag pressure synchronization calibration.

[0009] 2. Initial inflation and crane coordination Start the air pump to inflate the airbag jack to 80% of the rated pressure, and synchronously apply drag force from the crane to form initial support. The central controller monitors the airbag pressure and vehicle body posture data in real time, and controls the lifting angular velocity to ≤2° / s.

[0010] 3. Dynamic pressure control and center of gravity balance 1. Real-time feedback control The inertial sensor collects the body tilt angle and angular velocity data, and combined with the airbag pressure feedback, the central controller calculates the optimal inflation strategy. The inflation rate of each airbag is dynamically adjusted to control the pressure error ≤±5%, ensuring that the body is evenly stressed during the lifting process.

[0011] 2. Determination of center of gravity balance When the truck's center of gravity passes the balance point, stop pressurizing the airbag jack to maintain dynamic pressure balance.

[0012] 4. Inflation and controlled deflation of airbag cushions 1. Preparation for cushion inflation When the truck is returning to the normal direction, start the airbag cushion on the ground and inflate it to the working pressure to ensure that the honeycomb energy-absorbing layer is fully deployed. Adjust the cushion array position and the direction of the arc-shaped guide surface to accurately match the chassis landing area.

[0013] 2. Crane slow release hook and buffer control The crane releases the hook at a low speed, allowing the vehicle to fall freely onto the surface of the airbag cushion. The cushion starts a step-by-step deflation procedure: the first-level cushioning uses the honeycomb energy-absorbing layer to absorb the initial impact kinetic energy, with an acceleration limit of ≤0.3m / s²; the second-level pressure relief is to gradually reduce the internal pressure through a controllable deflation valve, allowing the vehicle to land smoothly as the airbag deflates.

[0014] 5. Closing and Evaluation 1. Equipment recycling After the vehicle lands, close the air bag air circuit interface and remove the modular air bag jack and cushion.

[0015] 2. Safety assessment and traffic restoration Check the structural integrity of the vehicle and assess repair needs. Clean up the equipment on site and restore the road to traffic.

[0016] Through the implementation of the above technical solution of the airbag righting device, the following technical advantages of the present invention can be reflected: First, precise control can be achieved, through multi-sensor fusion feedback and dynamic regulation of the central controller, accurate management of mechanical parameters in the lifting and landing processes can be achieved; second, graded buffering can be achieved, the airbag buffer pad combines a multi-stage damping structure with a controllable pressure relief technology to effectively absorb impact energy and reduce the risk of vehicle damage; third, modular and efficient deployment can be achieved, and the standardized air path interface and quick-release design support rapid deployment and evacuation, thereby improving rescue efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 A front cross-sectional schematic diagram of a truck being righted before bypassing the center of gravity balance point in an airbag-type righting device and method for a rollover truck provided by the present invention.

[0019] Figure 2 The present invention provides an airbag-type righting device and method for a rollover truck, and a schematic cross-sectional view of the truck after the truck is righted and passes the center of gravity balance point.

[0020] Figure 3 The present invention provides a cross-sectional schematic diagram of an airbag-type righting device and method for a rollover truck after the truck is righted and landed and the airbag equipment is cleaned.

[0021] The figure includes: an airbag jack (1), an airbag cushion (2), a crane (3), an independent air pump unit (4), a central controller (5), an inertial sensor (6), a standardized air path interface (7), and a rollover truck (8), wherein: the airbag jack (1) includes an anti-slip pattern (11) on the surface and an integrated pressure sensor (12) at the bottom; the airbag cushion (2) includes a multi-stage damping (21), an outer tear-resistant layer (22), a middle honeycomb energy-absorbing layer (23), and an inner airtight layer (24), and a curved guide surface (25) is provided on the top. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0024] The implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0025] 1. Device layout and initial state (corresponding to Figure 1 ) 1. Airbag jack layout like Figure 1 As shown, at least three airbag jacks (1) are inserted into the gap between the tilted side frame of the overturned truck (8) and the ground, and the anti-skid pattern (11) on the surface is closely fitted with the contact surface of the frame, and the bottom pressure sensor (12) monitors the support pressure in real time. The independent air pump unit (4) is connected through the standardized air circuit interface (7), and the central controller (5) completes the synchronous calibration of the multi-airbag pressure to ensure that the initial inflation pressure is uniform.

[0026] 2. Pre-positioning of airbag cushion On the ground in the truck's return direction (the expected landing area of ​​the chassis), airbag-type cushions (2) are arranged according to the number of axles, with the top arc-shaped guide surface (25) facing the truck chassis and aligned with the projection contour of the vehicle body through the pre-compression state of the honeycomb energy-absorbing layer (23).

[0027] 3. Crane coordination preparation The crane (3) is hooked and fixed to a preset lifting point on the truck frame, forming a coordinated lifting system with the airbag jack (1).

[0028] 2. Coordinated lifting and center of gravity balance control (corresponding to Figure 1 to Figure 2 Transition phase) 1. Initial inflation and crane traction The independent air pump unit (4) is started to inflate the airbag jack (1) to 80% of the rated pressure, and the crane (3) simultaneously applies a dragging force (direction as shown in FIG. Figure 1 The central controller (5) collects the tilt angular velocity of the vehicle body in real time through the inertial sensor (6) and controls the lifting rate to ≤2° / s to avoid sudden changes in the force on the vehicle body structure.

[0029] 2. Dynamic pressure control The pressure sensor (12) at the bottom of the airbag jack (1) feeds back data to the central controller (5), which, combined with the posture data (such as tilt angle and acceleration) from the inertial sensor (6), dynamically adjusts the inflation rate of each airbag to control the pressure error to ≤±5%. During the inflation process, the airbag jack (1) gradually lifts the vehicle body until the center of gravity of the truck approaches the balance point ( Figure 1 Towards Figure 2 transition state).

[0030] 3. Determination of center of gravity balance When the truck's center of gravity passes the balance point (e.g. Figure 2 As shown in the figure, the central controller (5) stops the pressurization of the airbag jack (1) to maintain the dynamic pressure balance, and the crane (3) stops pulling.

[0031] 3. Cushion charging and controlled deflation (corresponding to Figures 2 to 3 Landing stage) 1. Airbag cushion activation Before the center of gravity of the truck passes the balance point, the airbag cushion (2) is activated and inflated to the working pressure. The outer tear-resistant layer (22) of the cushion contacts the ground and the bottom of the vehicle, the middle honeycomb energy-absorbing layer (23) unfolds to form an elastic support structure, and the arc-shaped guide surface (25) guides the chassis to fall smoothly (such as Figure 2 as shown).

[0032] 2. Crane slow release hook and shock absorption The crane (3) slowly releases the hook at a low speed, allowing the vehicle to fall freely onto the surface of the airbag cushion (2). The multi-stage damping (21) functions as follows: First-stage cushioning, the honeycomb energy-absorbing layer (23) absorbs the initial impact kinetic energy through plastic deformation, limiting the landing acceleration to ≤ 0.3 m / s². Second-stage pressure relief, the central controller (5) triggers the controllable air release valve to step-by-step reduce the internal pressure of the airbag cushion (2), and the vehicle gradually and smoothly lands as the airbag deflates (such as Figure 3 as shown).

[0033] 3. Airbag equipment recycling After the vehicle has completely landed, close the standardized air circuit interface (7), remove the modular airbag jack (1) and the cushion (2), and clean up the site (such as Figure 3 state).

[0034] IV. Technical advantages and implementation effects 1. Precise mechanical control By means of the coordinated lifting of the airbag jack (1) and the crane (3), combined with the multi-sensor fusion feedback (pressure, posture, acceleration) of the central controller (5), closed-loop control of the mechanical parameters of the righting process is achieved.

[0035] 2. Multi-level energy dissipation The airbag-type cushion (2) converts traditional rigid impact into controllable flexible cushioning through a triple energy dissipation mechanism of the outer tear-resistant layer (22) for impact resistance, the honeycomb energy-absorbing layer (23) for plastic deformation, and the multi-stage damping (21) for step-by-step deflation.

[0036] 3. Modular and efficient deployment The standardized air circuit interface (7) and quick-release design support the rapid deployment and recovery of airbag equipment, shortening the rescue time by more than 30%, which is particularly suitable for time-sensitive scenarios such as road rescue.

[0037] Through the close combination of the drawings and the operating steps, the technical solution of the present invention is fully verified in terms of visualization and practicability. Example

[0038] A heavy truck rollover accident occurred on a highway. The truck's center of gravity shifted due to emergency obstacle avoidance, and the truck rolled to the right side on the non-motorized vehicle lane. The front of the truck and the cargo box were seriously tilted, and the chassis formed an angle of about 30° with the ground. There is a risk of the front of the truck breaking when directly towing with a traditional crane, so the airbag-assisted righting technology provided by the present invention is used for rescue.

[0039] 1. On-site assessment and equipment deployment (corresponding to Figure 1 ) Accident investigation: The truck tilt angle (30°) was measured, and the gap between the frame and the ground was 0.8m. It was determined that the airbag jack (1) needed to be placed under the right frame, with a total of 4 points (2 on the front axle and 2 on the rear axle). According to the projection size of the truck chassis (12m long and 2.5m wide), 6 groups of airbag cushions (2) were planned on the left ground, with a spacing of 2m between each group.

[0040] Equipment installation: insert the airbag jack (1), the anti-skid pattern (11) fits the contact surface of the frame, and the bottom pressure sensor (12) feeds back data to the central controller (5) in real time. The airbag cushion (2) is arranged in the direction with the arc-shaped guide surface (25) facing upward, and the honeycomb energy absorption layer (23) is pre-compressed to 80% of the height.

[0041] 2. Coordinated lifting and dynamic regulation ( Figure 1 to Figure 2 stage) Initial inflation and crane coordination: Start the independent air pump unit (4) to inflate the airbag jack (1) to 80% of the rated pressure (about 0.8MPa), and synchronize the crane (3) to slowly drag with a traction force of 5kN. The central controller (5) monitors the lifting angular velocity of the vehicle body through the inertial sensor (6) and controls it to ≤1.5° / s to avoid stress concentration at the front connection.

[0042] Pressure balance and center of gravity adjustment: Real-time adjustment of the pressure of each airbag, with the error controlled within ±4%, to ensure that the frame is evenly stressed. When the truck's tilt angle drops to 5° (close to the balance point), the inflation is stopped and the dynamic pressure balance is maintained, and the crane (3) stops pulling.

[0043] 3. Cushion inflation and controlled landing ( Figures 2 to 3 stage) Activation of the cushion: The airbag cushion (2) is activated and inflated to the working pressure (0.6 MPa), and the honeycomb energy absorbing layer (23) is fully unfolded to form an elastic support surface.

[0044] Crane slow release hook and multi-stage buffer: The crane (3) releases the hook at a speed of 0.1m / s, and the truck falls freely onto the surface of the buffer pad.

[0045] Primary cushioning: The honeycomb energy-absorbing layer (23) absorbs 70% of the impact kinetic energy, and the instantaneous acceleration upon landing is ≤0.25m / s².

[0046] Secondary pressure relief: The central controller (5) releases air in three stages (0.6MPa→0.3MPa→0.1MPa). The vehicle lands smoothly as the airbag deflates, taking a total of 45 seconds.

[0047] 4. Equipment recovery and site cleanup ( Figure 3 ) Disconnect the standardized air circuit interface (7), remove the airbag jack (1) and the cushion (2), and clean the road residue. Check the vehicle body: only the cargo box is slightly deformed, and the connection between the front of the vehicle and the chassis is not damaged. The maintenance cost is reduced by about 40%.

[0048] The technical effects of the embodiment are as follows: First, precise control. Through multi-sensor fusion control, there is no structural damage during the vehicle body lifting process, and the angular velocity error is less than 0.3° / s. Second, efficient buffering. The multi-stage damping (21) design of the airbag cushion (2) reduces the impact load to 1 / 3 of the traditional method. Third, rapid response. The modular equipment takes 2.5 hours from deployment to recovery, which is 50% shorter than traditional rescue.

[0049] This case verified the reliability of the airbag-type righting device in complex road scenarios. Through coordinated lifting, dynamic pressure regulation and multi-level buffering technology, it achieved safe and efficient righting of the truck, providing a standardized operation template for similar accident rescue.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An airbag righting device and method for a rollover truck, characterized in that: The device includes an airbag jack and an airbag cushion; the airbag jack is evenly arranged below the tilted side of the overturned truck, and cooperates with the crane to lift and flip the truck body; the airbag cushion is arranged in the landing area of ​​the chassis in the truck's return direction, and is provided with a multi-stage damping mechanism inside to absorb the impact kinetic energy when the truck returns to the ground; the airbag jack is inflated to a set pressure value through an independent air pump unit, and maintains dynamic pressure balance during the righting process; the airbag cushion starts a controllable deflation program after taking over the vehicle body, so that the vehicle can land smoothly as the airbag is deformed under pressure.

2. The airbag righting device for a rollover truck according to claim 1, characterized in that: The airbag jack is made of high-strength flexible composite material, has anti-slip patterns on the surface, a pressure sensor at the bottom, and realizes synchronous regulation of multiple airbag pressures through a central controller.

3. The airbag righting device for a rollover truck according to claim 1, characterized in that: The airbag-type cushion comprises an outer tear-resistant layer, a middle honeycomb energy-absorbing layer and an inner airtight layer, a curved guide surface is provided on the top thereof, and the airbag-type cushion is arranged in an array along the projection contour of the truck chassis to optimize the landing cushioning effect.

4. The airbag righting device for a rollover truck according to claim 1, characterized in that: The airbag jack and airbag cushion adopt a modular quick-release design, are equipped with a standardized air circuit interface, and integrate an independent air pump unit, supporting parallel inflation and deflation operations of multiple devices to improve rescue efficiency.

5. An airbag-type righting device and method for a rollover truck according to claims 1 to 4, characterized in that The following steps are involved: S1 Insert at least three airbag jacks at the gap between the truck frame and the ground on the dumping side, and place airbag cushions on the ground in the direction of returning to the normal position according to the number of axles; S2 starts the air pump unit to inflate the airbag jack to 80% of the rated pressure, and synchronously applies a dragging force to the crane; S3 monitors the airbag jack pressure data in real time and dynamically adjusts the inflation rate to make the vehicle body lifting angular velocity ≤2° / s; S4 When the truck's center of gravity passes the balance point, the airbag cushion is inflated to the working pressure and the crane's slow release hook is activated; The S5 uses a stepped deflation of the airbag cushion to allow the vehicle to land smoothly at an acceleration of ≤0.3m / s².

6. After the S6 truck lands smoothly and straightens, it initiates subsequent truck maintenance assessment, on-site evacuation and traffic restoration.

7. The airbag-type righting device and method for a rollover truck according to claim 5, characterized in that: In step S3, the vehicle body posture data is collected in real time by the inertial sensor, and combined with the airbag pressure feedback, the central controller calculates the optimal inflation strategy, and the control error range is ≤±5%.

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