76 results about "Crashworthiness" patented technology

An aircraft, such as a rotorcraft, may have at least one area designated to house at least one fuel cell and at least one aircraft structure that may translate, during a drop impact of the aircraft, into the area designated to house the fuel cell. At least one shaped fuel cell may be provided and deployed therein, in accordance with the present systems and methods. Each respective shaped fuel cell may define at least one respective through-voids defined through the respective shaped fuel cell, and / or at least one respective edge cavity defined along an edge of the shaped fuel cell, wherein the respective through-void and / or the respective edge cavity correspond to the respective aircraft structure that may translate, during the drop impact of the aircraft, into the area of the aircraft designated to house the respective fuel cell to receive and accommodate the respective structure during the drop impact.

The invention belongs to the technical field of structural collision safety, and particularly relates to an equivalent static collision stiffness calculation method for structural crashworthiness analysis. According to the method, an external force formula is obtained through a dynamic control equation of structural collision response analysis, then the secant rigidity of the structure is obtained through changes of external force and displacement, therefore, the equivalent static collision rigidity is calculated, and then structural crashworthiness analysis is conducted through set indexes. According to the equivalent static collision rigidity calculation method based on the energy principle and the evaluation index of the equivalent static collision rigidity calculation method, equivalent static collision rigidity calculation and evaluation indexes can be rapidly and directly achieved, and an effective solving method is provided for calculation of structural collision rigidity. Meanwhile, the current commercial software can output the position vector of the node, so that secondary development can be carried out on the basis of the existing large finite element software, and a feasible way is provided for engineering application.

The utility model relates to the technical field of new energy vehicles, in particular to a frame for a new energy tricycle. The chassis comprises a main body support, a hub support, a frame support and a protective support, the main body support comprises transverse rods, longitudinal rods and reinforcing rods, the transverse rods and the longitudinal rods are mutually spliced to form a chassis main body frame, and the reinforcing rods are fixedly supported between the transverse rods and the longitudinal rods. The main body support forms a firm chassis main body frame through splicing of the transverse rods and the longitudinal rods, the reinforcing rods provide additional support between the transverse rods and the longitudinal rods, the rigidity of the whole structure is enhanced, the frame support is arranged on the upper side of the main body support, and the weight and load of the upper portion of a vehicle body can be effectively dispersed and borne; the protection support is installed on the outer side face and in the vehicle frame support, an additional protection layer is provided, and the reasonable layout of the protection support is beneficial for improving the crashworthiness and safety of the vehicle.

The utility model discloses a double-sided co-extrusion anti-collision large plate with strong anti-collision performance. The double-sided co-extrusion anti-collision large plate comprises an anti-collision large plate, connecting clamping grooves are formed in the two sides of the connecting base, and the connecting base is arranged on the back face of the large anti-collision plate so that the large anti-collision plate can be fixed; the positioning seat is provided with a positioning groove, and the positioning groove is used for positioning the connecting seat; and the buffering and positioning assembly is used for reducing impact force, and the buffering and positioning assembly is arranged on the connecting base. The anti-collision device has the advantages that impact force borne by the large anti-collision plate is buffered through the buffering and positioning assembly, the impact force borne by the large anti-collision plate is reduced, meanwhile, the wall can be prevented from being collided, the large anti-collision plate and the wall are prevented from being damaged, the service life is prolonged, the large anti-collision plate is convenient to disassemble and assemble through the buffering and positioning assembly, and the anti-collision device is convenient to use. And the working efficiency is improved.

The utility model discloses a bridge combined multi-stage energy consumption buffer device which comprises a steel jacket box, a steel partition plate used for separating space is arranged in the steel jacket box, and a first-stage energy consumption structure used for first-stage buffer energy consumption and a second-stage energy consumption structure used for second-stage buffer energy consumption are arranged in the separated space respectively. The steel jacket box is arranged outside the pier through the rubber fender. The UHPC panel and the stainless steel composite steel plate are adopted, and the service life of the structure is remarkably prolonged under the complex service environment of a water area. In the aspect of collision resistance, the high-strength steel grid structure has a definite deformation mode induction mechanism, the impact force is dispersed through the UHPC panel with large rigidity, the impact force is buffered through the honeycomb with small rigidity, the impact force is transmitted to the high-strength steel grid structure through the UHPC panel and the dense honeycomb, the energy consumption efficiency is greatly improved, the force transmission path is reasonable, coverage of different collision prevention levels can be achieved, and the energy consumption is reduced. And meanwhile, the compression stroke of the energy dissipation assembly is increased, the peak impact force is reduced, and designability is good.

A computer-aided design system comprises: a display device; a memory storing a plurality of response surface models; and a processor configured to: (a) display a graphical user interface including a vehicle frame model; (b) display a section configuration panel including one or more cross-sectional dimension values ​​for one or more cross-sectional dimensions of a first cross-sectional member among a plurality of cross-sectional members; (c) obtain a first response surface model based on the values ​​of the one or more cross-sectional dimensions for the first cross-sectional member; (d) determine one or more predicted values ​​associated with the first cross-sectional member based on the values ​​of the cross-sectional dimensions, the predicted values ​​including one or more predicted crash resistances for the cross-sectional member; and (e) display the predicted values, thereby allowing a user to evaluate the predicted values ​​to adapt the vehicle design.

This invention belongs to the technical field of automotive energy-absorbing structures, specifically relating to a reverse design method for variable-thickness thin-walled energy-absorbing structures. This method allows for the design of thickness variations based on the energy absorption characteristics of the thin-walled energy-absorbing structure itself. For a given impact load condition, the thickness of the automotive thin-walled energy-absorbing structure is used as the design variable, and the total energy absorption value of the thin-walled energy-absorbing structure is used as the design objective. Under the constraint of limiting the total mass of the thin-walled energy-absorbing structure, the aim is to improve crashworthiness. This method starts with reverse design, with the core idea of ​​increasing thickness where needed (where energy absorption is high) and decreasing thickness where it is not needed (where energy absorption is low), aiming for a rational material distribution within the structure. Through this method, engineers can quickly design variable-thickness energy-absorbing structures. This method simplifies the energy-absorbing structure design process, controls costs, and has good operability and convenience.

The utility model relates to the technical field of traffic engineering, in particular to a traffic engineering protective fence which comprises a shell, sliding grooves are formed in the same sides of the two symmetrical faces of the shell, and sliding covers are installed in the sliding grooves in a sliding mode. The force unloading assembly is installed in the shell, and the force unloading assembly is used for reducing the impact force borne by the protective fence; and the warning assembly is installed on one side of the force unloading assembly, and the warning assembly is used for warning passing vehicles. Compared with the prior art, the force unloading assembly is arranged, the vehicle impact force can be effectively unloaded, the crashworthiness is improved, and the service life is prolonged; the pressure spring ensures stable ejection of the ejection plate, so that the force unloading assembly is convenient to release; the clamping columns and the clamping grooves are flexibly matched, so that the protective fence is adjustable in layout and high in adaptability; meanwhile, the shell can be used as a temporary seat, construction is facilitated, and space is saved due to the fact that the shell is placed in a stacked mode.

The microphone protective sleeve comprises a protective sleeve body and a fixed base detachably connected with the protective sleeve body, a containing space is arranged in the protective sleeve body, and an opening communicated with the containing space is formed in the end, away from the fixed base, of the protective sleeve body. The accommodating space is used for accommodating a microphone extending from the opening; the side wall, close to the opening, of the protective sleeve body is provided with a sound transmission hole corresponding to a sound receiving area of the microphone, and the outer wall of the end, close to the opening, of the protective sleeve body is provided with an anti-roll angle assembly used for limiting rolling of the protective sleeve body. According to the utility model, the sound transmission hole and the anti-roll angle assembly are arranged on the protective sleeve body, so that the microphone can be directly used in the protective sleeve body, the crashworthiness is improved, the protective sleeve body can be directly taken up from the fixed base during use, and the use convenience is greatly improved.

The invention provides a method for testing the crashworthiness of rubber, and the method comprises the steps: S10, setting a moving part and an impact part, enabling the moving part to fix the rubber, and enabling the moving part to move along an impact direction so as to drive the rubber to impact the impact part; s20, the rubber is fixed to the moving part; s30, the moving part is driven to move at the preset initial speed, and the rubber is driven to impact the impact part; s40, the impact force borne by the rubber is collected; s50, the deformation amount and the recovery rate of the rubber after being impacted are collected; and S60, evaluating the crashworthiness of the rubber according to the initial speed of the moving part, the impact force applied to the rubber, and the deformation and recovery rate of the rubber after being impacted. According to the method for testing the crashworthiness of the rubber, a horizontal collision mode is adopted, so that the stress condition of a rubber material in practical application is reduced. The invention also provides a device for testing the crashworthiness of the rubber, which is used for realizing the method.

The invention relates to an anti-collision device unit and a crashworthiness analysis, regulation and control method thereof.According to the anti-collision device unit, a pre-designed initial defect is arranged on a round pipe, and the initial defect is used for inducing a folded waveform to be bent in advance at a preset position and keep stable transmission when the round pipe is axially crushed; therefore, the initial peak force of axial crushing of the circular pipe is reduced, large impact load cannot be transmitted to a structure needing to be protected in the early stage of protection, the local damage risk of the structure needing to be protected is reduced, energy consumption of the circular pipe capable of adopting axial crushing can be achieved, high platform bearing capacity can be kept, meanwhile, lower initial resistance is generated, and the anti-collision performance is improved. According to the crashworthiness analysis method of the anti-collision device unit, the design efficiency can be improved, the design period can be shortened, and then the requirements of rapid design and parameterization optimization in actual engineering can be met. According to the anti-collision device unit crashworthiness regulation and control method, the crashworthiness and design efficiency of the anti-collision device unit can be improved, and therefore the defects in the prior art are overcome.

The invention discloses a tower bag of a vehicle and the vehicle, and relates to the field of vehicles, the tower bag of the vehicle comprises a tower bag body, a first reinforcing structure and a second reinforcing structure, the first reinforcing structure and the second reinforcing structure are both arranged on the tower bag body, the first reinforcing structure extends in the height direction of the vehicle, and the second reinforcing structure extends in the length direction of the vehicle; and the first reinforcing structure and the second reinforcing structure are intersected. Therefore, the first reinforcing structure extending in the height direction of the vehicle can effectively stabilize the force transmitted to the vehicle body from the road surface through the suspension, the driving comfort of the whole vehicle can be improved, the second reinforcing structure extending in the length direction of the vehicle can reliably bear and absorb the collision force when a head-on collision occurs, and in addition, the collision force is reduced. The first reinforcing structure and the second reinforcing structure are arranged in a crossed mode, so that the mechanical property of the tower ladle can be remarkably improved, the tower ladle has excellent crashworthiness, the overall rigidity of the front cabin can be improved, and the performance requirement is met.

The utility model relates to a vehicle body and a vehicle, the vehicle body comprises a D column reinforcing plate, a D column inner plate, a first pipe and a partition plate, the D column reinforcing plate and the D column inner plate are welded and define a first cavity, the first pipe is located in the first cavity, the partition plate is located in the first cavity and installed on the outer wall of the first pipe, and the D column reinforcing plate and the D column inner plate are welded to form a second cavity. And the partition plate is welded with the D column reinforcing plate and the D column inner plate. The partition plate and the first pipe are arranged in the first cavity, so that the rigidity and the torsion resistance of the first cavity are improved, the rigidity, the structural stability and the collision resistance of the vehicle body are improved, and the safety performance of the vehicle body is greatly improved.

The embodiment of the invention provides a vehicle body design method and device, electronic equipment and a storage medium, and the method comprises the steps: determining a crashworthiness evaluation index based on a preset threshold beam configuration; determining a target topological configuration according to the crashworthiness evaluation index; according to the initial design parameters of the threshold beam, an axial thickness change parameter model of the threshold beam is constructed; constructing a threshold beam parameter optimization model according to a pre-constructed thickness constraint function, the target topological configuration and the axial thickness change parameter model; according to the threshold beam parameter optimization model, target design parameters of the threshold beam are determined. The technical problem of how to improve the impact resistance of the vehicle doorsill beam structure in side collision while ensuring the light weight of the vehicle in the vehicle body design process is solved.

The utility model discloses an automobile forecabin supporting beam assembly which comprises a main supporting beam, a cross beam is fixedly connected to one side of the main supporting beam, an auxiliary supporting beam is fixedly connected to one side of the cross beam, a connecting support is fixedly connected to the top of the main supporting beam, and a positioning hole is formed in the top of the connecting support. A multi-component combined structure and an aluminum alloy material are adopted, the lightweight design is achieved, meanwhile, the overall strength and rigidity of a vehicle body forecabin are enhanced, and through the arrangement of a middle cavity, a weight reduction cavity, a collision energy absorption box and reinforcing ribs, the overall strength and rigidity of the vehicle body forecabin are improved. The safety performance and the crashworthiness of the vehicle are effectively improved, and the safety of passengers can be better protected when the vehicle is collided. In addition, the mounting structure of the circular tube shaft sleeve and the rivet nut optimizes the fixing mode of parts, improves the reliability and convenience of mounting, and is beneficial to maintenance and replacement of the vehicle.

The present invention provides an aircraft structure optimization method, system, device and storage medium, belonging to the technical field of aircraft crashworthiness design. The method comprises the following steps: constructing a finite element model of an aircraft fuselage frame section, analyzing the load transfer path during the aircraft crash impact, establishing an energy absorption performance decomposition model, and constructing a hierarchical crashworthiness level evaluation system for the fuselage frame section based on the energy absorption performance decomposition model; constructing an initial data set, and performing data enhancement on the initial data set using an adversarial neural network algorithm to obtain an enhanced data set; optimizing the initial weights and threshold parameters of a predictive neural network model using a parameter optimization algorithm to obtain an improved predictive neural network model, inputting data in the enhanced data set into the predictive neural network model to obtain an optimal design parameter combination; and optimizing the aircraft structure based on the optimal design parameter combination. The present invention can obtain an aircraft structure with better crashworthiness.

The embodiment of the invention provides an anti-collision structure and a vehicle, and relates to the technical field of automobile accessories. The anti-collision structure comprises a plurality of mounting beams and a plurality of connecting rods, wherein the mounting beams are arranged on the two sides of a longitudinal beam of a vehicle body of the vehicle respectively; each mounting beam is correspondingly provided with one connecting beam, one end of each connecting beam is used for being connected with a longitudinal beam of a vehicle body, and the other end of each connecting beam is arranged on the lower portion of the corresponding mounting beam; the anti-collision pieces are arranged between the ends, away from the vehicle body longitudinal beam, of the multiple mounting beams and between the ends, away from the vehicle body longitudinal beam, of the multiple connecting beams. According to the anti-collision structure and the vehicle, impact force can be decomposed and dispersed, and therefore the anti-collision performance of the vehicle is improved.

The application belongs to the technical field of automobile passive safety design, and specifically discloses an end-to-end safety design large model system and method for automobile crashworthiness driving. The system comprises a large language model module, and an input module, a multi-modal feature extraction and analysis module and an output module connected with the large language model module respectively; the input module is used for inputting crashworthiness design requirement information; the large language model module and the multi-modal feature extraction and analysis module adopt a cross-modal interaction mode, which is used for multi-modal feature extraction and cross-modal fusion by using the word sequence corresponding to the crashworthiness design requirement information, and iterative analysis based on the fused features under a preset crashworthiness constraint condition to obtain a target three-dimensional crashworthiness structure scheme; and the output module is used for outputting the target three-dimensional crashworthiness structure scheme. The application can greatly improve the efficiency of the entire automobile crashworthiness design process and shorten the vehicle safety development cycle.

A crashworthiness energy absorption part 1 according to the present invention absorbs crash energy by undergoing axial crash when a crash load is input from the front or the rear of a vehicle body, and comprises: a cylindrical part 10 including eight surface parts 11 and having an octagonal cross-sectional shape orthogonal to an axial crash direction; and a plurality of slits 20 formed in any of the surface parts 11 in a shape extending in a direction substantially orthogonal to the axial crash direction. The plurality of slits 20 are not formed in inclined surface parts 11d corresponding to the sides of the minimum length of the octagonal shape, but instead three or more slits are formed at equal intervals along the axial crash direction in side surface parts 11c corresponding to the sides of the maximum length of the octagonal shape. The length of each slit 20 is 10% or more of the length of the side of the side surface parts 11c, and the width of each slit 20 is 1.0 times or more of the plate thickness of the side surface parts 11c.

The utility model belongs to an automobile front longitudinal beam reinforcing structure in the technical field of automobile parts. The front longitudinal beam inner plate (1) is connected with the front longitudinal beam outer plate (2), the first front longitudinal beam reinforcing plate (3) is arranged on the left side folding portion of the upper portion of the inner surface of the front longitudinal beam inner plate (1), the second front longitudinal beam reinforcing plate (4) is arranged on the right side folding portion of the upper portion of the inner surface of the front longitudinal beam inner plate (1), and the third front longitudinal beam reinforcing plate (5) is arranged between the left side of the lower portion of the inner surface of the front longitudinal beam inner plate (1) and the front longitudinal beam outer plate (2). And a fourth front longitudinal beam reinforcing plate (6) is arranged between the right side of the lower part of the inner surface of the front longitudinal beam inner plate (1) and the front longitudinal beam outer plate (2). The automobile front longitudinal beam reinforcing structure is simple in structure and easy to form, the rigidity and the strength of a front longitudinal beam are improved, and the crashworthiness of an automobile in the frontal collision process is improved; the thickness, the material and the splicing welding position of the reinforcer are simply adjusted, the optimal rigidity and strength performance can be found through a simulation means, and the process is simplified.

The invention belongs to the technical field of port engineering and ship protection, and discloses a wharf anti-collision fender device. The base assembly is fixedly installed on a wharf. The buffering assembly is movably connected with the end, away from the wharf, of the base assembly and can move in the vertical direction relative to the base assembly, and the buffering assembly comprises a plurality of spring dampers arranged in an array mode. The energy absorption assembly comprises a shell, foam metal and a metal sandwich plate, the shell is fixedly connected with the end, away from the base assembly, of the buffer assembly, and the foam metal and the metal sandwich plate are both of trapezoidal structures extending in the vertical direction and are alternately stacked in an inner cavity of the shell; the protection assembly is fixedly connected with the end, away from the buffering assembly, of the shell and can elastically abut against the ship broadside. The gravity of the buffering assembly, the gravity of the energy absorption assembly and the gravity of the protection assembly are balanced with seawater buoyancy, so that the problems that an existing wharf anti-collision fender device is poor in buffering performance, prone to damage and insufficient in protection effect are solved, the collision resistance is improved, the service life is prolonged, and the ship protection capacity is improved.

The present application relates to the technical field of rail train, and discloses a rail train collision energy flow analysis method, which comprises the following steps: determining a rail train collision energy flow analysis framework; establishing a train longitudinal collision finite element model and a train three-dimensional collision finite element model; establishing a train collision energy transmission path analysis model; and respectively analyzing the transformation, dissipation and transmission of collision energy in the collision process based on the train longitudinal collision finite element model and the train collision energy transmission path analysis model. The present application can comprehensively analyze the flow characteristics of collision energy in the collision process from the three aspects of transformation, dissipation and transmission of collision energy by establishing the train longitudinal collision finite element model and the train collision energy transmission path analysis model of two rail trains in the corresponding collision scene, which is of great significance for revealing the train collision energy flow mechanism, strengthening the understanding of the dynamic instability behavior of train collision, and improving the design method of train multi-stage crashworthiness structure.

The utility model provides a square column-shaped roadblock target object for automobile active safety system testing, which relates to the technical field of automobile active safety system testing and comprises a target object body, the surface of the target object body is smooth and flat, the target object body has preset supporting force, four corners of the target object body are provided with chamfered edges, and the periphery of the target object body is provided with side walls along the axial direction. The working size of the side wall is matched with that of the chamfering edge; the outer surface of the target object body is coated with a coating; according to the utility model, the surface of the target object body is smooth and flat, and the surface of the target object body is coated with the coating, so that the target object body has good crashworthiness and wear resistance, and can keep stable performance in multiple tests; through the design shape of the square column of the target object body, an accurate parking test target can be provided for an automobile active safety system, and the consistency and reliability of test results are improved.

The present invention relates to the technical field of train crashworthiness performance analysis, and discloses a method and system for processing model data of a train energy absorption structure in collision simulation to achieve cost reduction and efficiency improvement and ensure reliability. The method includes: using the force-displacement curve of each sample in the first dataset as the input and output of a self-supervised network model, and extracting the intermediate layer hidden variables respectively corresponding to each force-displacement curve after dimensionality reduction in the self-supervised network model; then training, validating and testing a new network model with the structural parameters of the energy absorption structure as the input and the intermediate layer hidden variables as the output according to the second dataset; combining the new network model with the decoder part of the self-supervised network model to obtain a target model for predicting the force-displacement curve based on the structural parameters; embedding the target model into the coupled train collision dynamics model to predict and output the force-displacement curve required for collision simulation according to the input data of the dynamic simulation environment.

The present invention discloses a method for simulating weld failure based on the crashworthiness of a whole vehicle, which belongs to the field of simulation analysis technology and includes the following steps: obtaining the material grades of all components connected by welds; sorting out the yield strength of the corresponding grades based on the statistical table of material grades used for vehicle models and in combination with the corporate standards of each enterprise, for solving the subsequent weld material parameters; screening out the weld connection pairs defined by the vehicle model, and selecting the lower value of the yield strength in the connection pair as the failure reference yield strength; obtaining the weld failure force parameters, bringing the material parameters and weld failure force parameters into the weld material MAT100 control card, and assigning them to the components corresponding to different weld groups; inputting the material parameters and weld failure force parameters into finite element analysis software for solution and calculation. The weld failure simulation method of the present invention quickly simulates and obtains the weld failure parameters by defining the basic properties of the material, thereby realizing the evaluation of the whole vehicle crashworthiness structure and the prediction of the weld failure risk.

The invention relates to the technical field of impact energy absorption, in particular to a continuous fiber reinforced composite material mixed expansion type energy absorption structure which comprises a core pipe, an inner pipe is arranged inside the core pipe, an outer pipe is arranged outside the core pipe, the core pipe is connected with the inner pipe and the outer pipe through an adhesive, and the core pipe is made of a continuous fiber reinforced thermoplastic composite material. Comprising reinforced fibers and a base material, the reinforced fibers are laid in the circumferential direction of the axis of a core pipe, and the printing path of the core pipe is a continuous spiral line path. When the expansion compression load is applied, the circumferential pressure stress of the core pipe is converted into the axial tensile stress of the fibers, energy is dissipated by layer-by-layer breakage of the fibers, the outer pipe restrains the radial expansion of the core pipe, and the inner pipe transmits the load. The structure is low in initial peak load and stable in stress platform, and can be widely applied to crashworthiness design and impact protection systems in the fields of rail transit vehicles, automobiles, aerospace and the like.

According to the assembly type foam aluminum bridge anti-collision energy absorption device, an energy absorption cavity is defined by an outer layer aluminum plate, and an internal energy absorption structure is protected. The first rubber interlayer is arranged on the inner wall of the energy absorption cavity, the good elasticity of rubber is utilized, the buffering effect is achieved at the impact moment, and the direct influence of impact force on a follow-up structure is reduced. And the combination of the second rubber interlayer and the spring further optimizes the energy absorption effect. The springs absorb energy through stretching and retracting in the collision process, and the multiple springs arranged at intervals in the height direction can deal with collision at different positions in an omnibearing mode. The second rubber interlayer surrounds the spring, not only can assist in energy absorption, but also can prevent the spring from being damaged by direct friction with other parts, meanwhile, the second rubber interlayer is attached to the foamed aluminum layer, the integrity and the buffering effect of the structure are further enhanced, the anti-collision performance of a bridge is comprehensively improved, the bridge structure can be protected, and the service life of the bridge is prolonged. And the damage degree of vehicles and ships during collision can be reduced.

The utility model discloses a tool for detecting the crashworthiness of a sealing element, which comprises a base and an assembly disc, the assembly disc is arranged above the base, the top of the assembly disc is provided with an ejection disc, the two sides of the base are fixedly connected with first mounting seats, the two sides of the assembly disc are fixedly connected with second mounting seats, and the first mounting seats are fixedly connected with the second mounting seats. The top of the first mounting seat is fixedly connected with a guide rod, the guide rod penetrates through the top of the second mounting seat, anti-collision performance testing can be carried out on rubber strip sealing elements of different sizes and lengths in a unified mode, the working efficiency is greatly improved, automatic material jacking and taking operation can be achieved, and under the action of a reset spring, the material can be automatically ejected and taken. According to the device, after the protruding part of the cam leaves the bottom end of the ejector rod, the ejector rod in the rising state can automatically descend and reset, the design structure is more reasonable, the practicability is further improved, the assembled rubber strip sealing element can be taken out through the first semicircular strip plate and the second semicircular strip plate, and workers do not need to pull out the rubber strip sealing element little by little.

The utility model discloses a one-step molded high-strength draw-bar box, which relates to the technical field of draw-bar boxes, solves the problems of low anti-collision performance and low buffering and damping performance of the existing device, and adopts the following scheme that the whole body of a draw-bar box body is formed by integral injection molding, and anti-collision bumps A which are uniformly distributed are assembled on the front side of the draw-bar box body; according to the one-step molded high-strength draw-bar box, through the arrangement of the anti-collision convex blocks A, the anti-collision convex blocks B and the reinforcing protective plates, the integral strength of the draw-bar box formed through integral injection molding can be improved, the anti-collision performance of the draw-bar box can be improved through the anti-collision convex blocks A and the anti-collision convex blocks B, and the anti-collision performance and the strength of corners of the draw-bar box can be improved through the reinforcing protective plates; and meanwhile, through the arrangement of the buffer springs and the dampers, when the moving wheels are bumped, the buffer springs and the dampers can be used for buffering and damping the moving wheels, so that the bumping amplitude is reduced, and the stability and the safety of the device in use are improved.