CN114383867A

CN114383867A - Automobile front bracket connection point testing device and testing method

Info

Publication number: CN114383867A
Application number: CN202111642618.4A
Authority: CN
Inventors: 张顺; 王恒; 周波; 钟阳
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-04-22
Anticipated expiration: 2041-12-29
Also published as: CN114383867B

Abstract

The embodiment of the application discloses a device and a method for testing a connecting point of a front bracket of an automobile, relates to the technical field of vehicle engineering, and solves the problem that the bearing condition of the front bracket in an automobile beam system under a frontal collision working condition is difficult to effectively simulate. The testing device for the connecting point of the front bracket of the automobile comprises a trolley, a supporting component, an impact component and a sensor, wherein the first end of the supporting component is fixedly connected with the trolley or a wall body, and the second end of the supporting component is fixedly connected with an automobile beam system to be tested; the impact assembly is used for being fixedly connected with a trolley or a wall body which is not connected with the supporting assembly, the impact assembly is provided with an impact piece for simulating an automobile power assembly, the impact piece extends towards the supporting assembly, the sensor is arranged at the position of a connecting point of a front bracket of an automobile beam system to be tested, and the sensor is used for acquiring data of the connecting point of the front bracket of the automobile beam system to be tested in a collision process. The application discloses bracket tie point testing arrangement before car is used for studying the interact between car beam system front bracket and the power assembly under the direct impact operating mode.

Description

Automobile front bracket connection point testing device and testing method

Technical Field

The embodiment of the application relates to but is not limited to the field of vehicle engineering, in particular to a device and a method for testing a connecting point of an automobile front bracket.

Background

In automobile design, the crashworthiness of a vehicle is generally evaluated by a frontal crash test, a simulation, and the like. In the conventional vehicle structure, the powertrain disposed in the front compartment tends to move backward and downward in a frontal collision, pressing the firewall and the front bracket, which is one of the causes of the acceleration peak being high. Therefore, in the collision process, the acquisition of the connection strength characteristic of the front bracket connection point and the design of the failure parameter become important difficulties in the front collision development of the automobile.

The automobile frontal collision test in the related technology can not simulate the situation that the automobile power assembly extrudes the automobile beam system front bracket, the measured data can not completely reflect the stress of the automobile beam system front bracket in the collision process, the data precision is poor, and the research and the development of the automobile are not facilitated.

Disclosure of Invention

The utility model provides a bracket tie point testing arrangement before car has the advantage that simulation accuracy is high, the suitability is strong, can repeat the test.

In a first aspect, an embodiment of the application provides an automobile front bracket connection point testing device, which includes a trolley, a supporting component, an impact component and a sensor, wherein the supporting component has a first end for fixedly connecting the trolley or a wall, and a second end for fixedly connecting an automobile beam system to be tested; the impact assembly is used for being fixedly connected with a trolley or a wall body which is not connected with the supporting assembly, the impact assembly is provided with an impact piece for simulating an automobile power assembly, the impact piece extends towards the supporting assembly, the sensor is arranged at the position of a connecting point of a front bracket of an automobile beam system to be tested, and the sensor is used for acquiring data of the connecting point of the front bracket of the automobile beam system to be tested in a collision process.

The test device for the connecting point of the front bracket of the automobile, provided by the embodiment of the application, can move towards the wall body according to the set speed, collide with the wall body and is used for simulating the scene that the automobile collides with the barrier in the front direction, the wall body is fixed on the ground and has good bearing capacity and can provide stable impact or load, in addition, the test device further comprises a supporting component for fixing the automobile beam system to be tested, the automobile beam system to be tested has different sizes or forms corresponding to different automobiles, the supporting components with different specifications or styles are matched with different automobile beam systems to be tested by arranging the supporting component as an intermediate connecting component, so that the test device has good applicability, meanwhile, the repeated test can be conveniently carried out by replacing the automobile beam system to be tested of the same model connected on the supporting component, and the requirement of the repeated test is met, the method comprises the following steps that a specific automobile beam system to be tested comprises a front bracket, a bracket extension structure and the like, in a test preparation stage, the automobile beam system to be tested is fixed with a second end of a supporting component, a front longitudinal beam part of the specific automobile beam system to be tested is close to the second end of the supporting component, and the bracket extension structure part of the automobile beam system to be tested is far away from the second end of the supporting component, namely, the stressed bracket extension structure of the automobile beam system to be tested is arranged in front of the front bracket and behind the front bracket during collision, the supporting component can be arranged on a wall body or a trolley according to actual requirements, when the supporting component is arranged on the wall body, an impact component is correspondingly arranged on the trolley, and the trolley drives the impact component to move towards the automobile beam system to be tested and generate collision during testing, so that the scene that the automobile is subjected to frontal collision when the automobile is static is simulated; when the support component is arranged on the trolley, the impact component is correspondingly arranged on the wall, the trolley drives the automobile beam system to be tested to move towards the impact component and generate collision during testing, the impact component is used for simulating the situation that the running automobile and a barrier generate frontal collision, and the installation positions of the support component and the impact component are arranged according to the actual testing requirement, so that the application range of the testing device is widened, the universality is improved, in addition, the impact component comprises an impact piece used for simulating an automobile power assembly, the impact piece extends towards the support component, namely the impact piece extends towards the automobile beam system to be tested, specifically, the impact piece extends towards a front bracket of the automobile beam system to be tested, and during testing, the bracket extending structure of the automobile beam system to be tested firstly collides with the wall or the end face of the trolley and deforms along with the wall and the deformation of the bracket extending structure of the automobile beam system, the test device of the application effectively simulates the bearing sequence of the front end structure of the automobile in the frontal collision process and the bearing characteristics of the front bracket of the automobile so as to provide accurate test data, the sensor is mainly used for collecting and recording force-bending moment signals of the connecting point of the front bracket of the automobile beam system to be tested in the collision test, the connecting point of the front bracket of the automobile beam system to be connected is a structure for connecting the front bracket with other parts of the automobile body and is also the position where the front bracket is most intensively stressed, the strength characteristics and failure parameters of the front bracket connection points are important indicators in front bracket timing. This test data can regard as whole car development and simulation to effective reference data of mark, compare with the scheme that is difficult to effectively simulate automobile fore-stock and receives automobile power assembly extrusion in the frontal collision among the correlation technique, the testing arrangement of this application, through setting up the impact piece that stretches out by test automobile beam system fore-stock, fore-stock receives the extruded bearing condition of automobile power assembly when can really simulate out automobile frontal collision, have that the simulation precision is high, the suitability is strong, can repeat the advantage of test.

In a possible implementation manner of the application, the impact piece comprises an impact head, a supporting part and a connecting part, the impact head and the connecting part are respectively fixed at two ends of the supporting part, the impact head extends towards the supporting component and is used for simulating the automobile power assembly, and the connecting part is fixedly connected with a trolley or a wall body which is not connected with the supporting component.

The utility model provides a bracket tie point testing arrangement before car, for the convenience of being connected of impact piece and platform truck or wall body, and guarantee the impact effect that the impact piece led to the fact to the car beam system that awaits measuring, the impact head in the impact piece is used for with the car beam system direct collision that awaits measuring, connecting portion are used for fixing the impact piece on wall body or platform truck, in order to guarantee its stability at collision in-process, the supporting part then is used for being connected impact head and connecting portion, and increase the length of impact piece, make the impact head can stretch into supporting component, thereby the simulation car beam system that awaits measuring is preceding longeron and bracket extending structure deformation in the collision in-process earlier, the order of bearing of bracket body atress is followed.

In one possible implementation of the present application, the impact head is cylindrical and extends in a horizontal direction, and the extending direction of the impact head is perpendicular to the moving direction of the trolley.

The embodiment of the application provides a bracket tie point testing arrangement before car, in order to guarantee the simulation automobile power assembly that the impact head can be better, make the impact head extend on the horizontal direction, and make its extending direction and platform truck direction of motion perpendicular, thereby make the impact head bigger with the collision area of examination car girder system on the horizontal direction of awaiting measuring, and then make the whole even collision impact that receives of front bracket of examination car girder system, simulate out and just bump in-process automobile power assembly atress whole towards the extruded condition of examination car girder system front bracket of examining, cylindric impact head bearing capacity is strong, shock resistance more.

In one possible implementation manner of the present application, the supporting portion includes a plurality of rod-like structures arranged in parallel, an included angle between the supporting portion and the horizontal direction of the connecting portion is an acute angle, and the connecting portion is higher than the impact head.

The utility model provides a bracket tie point testing arrangement before car, in order to save material under the prerequisite of guaranteeing to strike a structural strength, therefore, the carrier wave energy saving device is low in cost, through setting up shaft-like structure, connecting portion and the supporting part between the impact head support for the frame, required material still less, thereby low cost, a plurality of shaft-like structures support for striking the head simultaneously, can guarantee the structural strength of striking, the shaft-like structure of connecting portion has increased the length of striking in addition, it can stretch out towards supporting component to make to strike the head. The automobile beam system is acted on the oblique upward force of the automobile power assembly, the situation is simulated in the testing process, namely the automobile beam system to be tested is exerted on the oblique upward force of the impact piece, in order to enhance the bearing capacity of the impact head, the rod-shaped structure of the supporting part is obliquely arranged downward, specifically, the included angle between the supporting part and the horizontal direction of the connecting part is set to be an acute angle, and the connecting part is higher than the impact head, so that the rod-shaped structure of the supporting part is basically consistent with the direction of the impact force exerted on the supporting part, the bending moment borne by the rod-shaped structure is smaller, the rod-shaped structure is not easy to break and damage, and the bearing energy of the impact piece is improved.

In a possible implementation manner of the application, the simulation wall further comprises a fixed barrier, the fixed barrier is used for being fixed with the ground so as to simulate a wall body, the first end of the supporting component is used for being connected with the trolley or the fixed barrier, and the connecting part is fixedly connected with one of the trolley or the fixed barrier, which is not connected with the supporting component.

In order to ensure the integrity of the device, the device for testing the connecting point of the front bracket of the automobile further comprises a fixed barrier which can be used for simulating a wall body, which is firmly fixed to the ground and can ensure stability during collision, the first end of the support assembly can be connected to a trolley or a fixed barrier, when the first end of the supporting component is connected with the trolley, the impact piece is fixed on the fixed barrier, when in test, the trolley carries the automobile beam system to be tested to collide with the impact piece on the fixed barrier, the reaction force of the impact piece generates impact on the automobile beam system to be tested, when the first end of the supporting component is connected with the fixed barrier, the impact piece is fixed on the trolley, and during testing, the trolley carries the impact piece to collide towards the automobile beam system to be tested on the fixed barrier, so that the impact piece impacts the automobile beam system to be tested.

In a possible implementation manner of the application, the first end of the supporting component is fixedly connected with the trolley, the connecting portion is fixedly connected with the fixed barrier, the T-shaped chute in the horizontal direction is formed in the fixed barrier, the sliding block is connected in the T-shaped chute in a sliding mode, the connecting portion is fixed with the sliding block through the fastening piece, and the fastening piece can lock the sliding block and the fixed barrier.

The embodiment of the application provides a bracket tie point testing arrangement before car, in order to make the impact member can adjust on the horizontal direction, so that the impact member can more accurate strike the fore poppet of the automobile beam system that awaits measuring, the fixed barrier who fixes mutually with the link of impact member has T type spout, connecting portion are connected with the slider, the slider slides in T type spout, thereby adjust the position of impact member on the horizontal direction, so that the impact member can just be to the collision position of the automobile beam system that awaits measuring on the horizontal direction, it can carry on spacingly to the slider to set up T type spout because it has spacing flange, can avoid the slider to deviate from in the T type spout by the power of the fixed barrier of perpendicular to. Pass through the fastener with connecting portion and be connected with the slider, make connecting portion and slider be convenient for assemble and dismantle, it is concrete, the fastener can be the screw, the fastener passes connecting portion along the vertical fixation barrier direction, and in the opening threaded connection of via T type spout to the slider, when the fastener is screwed up, slider and connecting portion are close to gradually, because the spacing flange of T type spout is in between slider and the connecting portion, spacing flange can receive the extrusion of slider gradually, the frictional force of slider and T type spout spacing flange increases gradually, thereby it slides along the extending direction of T type spout to hinder the slider, lock the slider in T type spout, also, the fastener is with the impact piece, the slider, fixed barrier three locks fixedly simultaneously, the convenience of impact piece position control has been promoted.

In a possible implementation of the application, the T-shaped sliding grooves are multiple, the T-shaped sliding grooves are evenly distributed along the vertical direction, and the T-shaped sliding grooves penetrate through the fixed barrier along the extending direction of the T-shaped sliding grooves.

The automobile front bracket connecting point testing device provided by the embodiment of the application is convenient for the height adjustment of the impact piece to adapt to various automobile beam systems to be tested with different heights, the plurality of T-shaped sliding grooves are formed in the fixed barrier and are uniformly distributed in the vertical direction, when the connecting part of the impact piece is connected with the T-shaped sliding grooves at different heights, the height of the impact piece is changed accordingly, the impact piece with the adjustable height can adapt to the automobile beam systems to be tested with different heights, so that the application scene of the testing device is widened, the universality of the testing device is improved, the impact piece is adjusted among the T-shaped sliding grooves at different heights, the T-shaped sliding grooves penetrate through the fixed barrier along the extending direction, and in the specific adjustment, only the fastening piece between the connecting part and the sliding block needs to be loosened, the sliding block can slide in the T-shaped sliding grooves and can slide out from the end parts of the T-shaped sliding grooves, and then the sliding block slides in from the end part of the other T-shaped sliding groove, so that the height of the impact piece is changed, the impact piece is adjusted to a proper position in the horizontal direction, and the connecting part, the sliding block and the fixed barrier are locked by the fastening piece.

In a possible implementation manner of the application, the support assembly comprises a vertically arranged support mounting plate and a longitudinal beam connecting part, the support mounting plate is provided with a mounting hole, the support mounting plate is fixed with one of the trolley or the wall body through the mounting hole, and the longitudinal beam connecting part is used for being fixed with an automobile beam system to be tested.

The embodiment of the application provides a bracket tie point testing arrangement before car, in order to facilitate with the fixed of supporting component and platform truck or wall body, the position of convenient according to actual demand adjustment supporting component, through setting up the mounting panel, and set up the mounting hole on the mounting panel, thereby can be convenient through the fastener with supporting component and platform truck or wall body installation or dismantlement, the convenience of supporting component installation has been improved, and the convenient degree of supporting component mounted position adjustment, in addition, in order to facilitate with the examination car roof beam system that awaits measuring fixed, still be provided with the longeron connecting portion fixed with the mounting panel, will await measuring the measuring car roof beam system through longeron installation department and fix on the mounting panel, and then firmly fix longeron installation department and platform truck or wall body.

In a possible implementation manner of the application, the longitudinal beam connecting portion comprises a longitudinal beam welding plate and a longitudinal beam support, the longitudinal beam welding plate is used for being welded and fixed with a front longitudinal beam of an automobile beam system to be tested, and the longitudinal beam connecting plate and the support mounting plate are respectively fixed at two ends of the longitudinal beam support in the extension direction.

The utility model provides a bracket tie point testing arrangement before car, in order to guarantee to await measuring the car roof beam system can firmly be fixed with supporting component, through setting up longeron welded plate, longeron welded plate is in the same place with the front longitudinal welding of the car roof beam system that awaits measuring, and welded connection intensity is high, need not to handle the structure of front longitudinal simultaneously, thereby has guaranteed the integrality of the structure of front longitudinal, and simulation car roof beam system is better at the effect of frontal collision in-process power transmission.

In a possible implementation manner of the application, the supporting assembly further comprises a sensor support, a first end of the sensor support is fixed to the support mounting plate, a second end of the sensor support extends to a connection point position of the automobile beam system front bracket to be tested, and the sensor is fixed to a second end of the sensor support and abuts against the connection point position of the automobile beam system front bracket to be tested.

The embodiment of the application provides a bracket tie point testing arrangement before car, for the convenience of the location of sensor, through setting up the sensor support, the first end of sensor support is fixed on the mounting panel, and fix the sensor at the second end of sensor support, thereby with sensor and mounting panel relatively fixed, simultaneously because the car beam system that awaits measuring passes through longeron welded plate and fixes on the mounting panel with the longeron support, consequently the sensor is with the car beam system relatively fixed that awaits measuring, through extending to the tie point position that awaits measuring car beam system front bracket with the second end of sensor, alright easily fix the sensor to the tie point position that awaits measuring car beam system front bracket.

In a possible implementation manner of the application, a sensor mounting plate is arranged between the sensor and the sensor support, the sensor mounting plate is fixed with the sensor support, and the sensor is connected with the sensor mounting plate through a fastener.

The embodiment of the application provides a bracket tie point testing arrangement before car, for the convenience of the assembly and the maintenance of sensor and sensor support, through setting up the sensor mounting panel, it is fixed with sensor support to fix the sensor mounting panel, and the sensor then is connected with the sensor mounting panel through the fastener, is convenient for install and dismantle to make things convenient for the assembly and the maintenance of sensor, reduced the maintenance cost of this device, improved the ease for use of this device.

In one possible implementation manner of the present application, the sensors and the sensor holders are multiple, and the multiple sensors and the multiple sensor holders are arranged in a one-to-one correspondence manner.

The embodiment of the application provides a car front bracket tie point testing arrangement, in order to improve efficiency of software testing and measuring precision, a plurality of sensors can be installed and are awaited measuring a plurality of positions of awaiting measuring automobile beam system, in a collision in-process, acquire a plurality of data that are awaited measuring the position simultaneously, thereby improve efficiency of software testing, the automobile beam system that awaits measuring simultaneously is symmetrical structure, the relative data reason of awaiting measuring the position in the collision in-process should converge, when two sensors are in the symmetry of awaiting measuring the position of awaiting measuring automobile beam system, test data can each other contrast, eliminate random error, thereby improve the measuring precision. In addition, the sensor support also plays the positioning action to the sensor when playing the supporting role to the sensor, through setting up a plurality of sensor supports and a plurality of sensor one-to-one, can not cause the influence to other sensors when single sensor needs the adjustment position.

In a possible implementation of the application, the sensor includes a sensor body and a transition shaft sleeve, the transition shaft sleeve has an external thread, a first end of the transition shaft sleeve is in threaded connection with the sensor body, and a second end of the sensor is in threaded connection with a connection point of a front bracket of the automobile beam system to be tested.

The utility model provides a bracket tie point testing arrangement before car, because the tie point size of the automobile beam system front bracket that awaits measuring of difference is inconsistent, in order to make the sensor can the not unidimensional tie point of the automobile beam system front bracket that awaits measuring of adaptation, set up the sensor body and be used for carrying out the collection and the record of power-moment of flexure signal in the collision process, set up transition axle sleeve in addition, transition axle sleeve can be fine with the tie point adaptation connection of the automobile beam system front bracket that awaits measuring, can link together with the sensor body again, the intensity characteristic and the failure parameter of the tie point of the automobile beam system front bracket that awaits measuring transmit the sensor body via transition axle sleeve, thereby the tie point of the multiple automobile beam system front bracket of adaptation under the condition of not changing the sensor, the universality of this device is improved, and simultaneously the cost is also lower.

In one possible implementation manner of the application, the sensor bracket and the longitudinal beam bracket are fixed with the bracket mounting plate through the connecting plate, and the connecting plate is fixed on the bracket mounting plate through the fastening piece.

The utility model provides a bracket tie point testing arrangement before car, for the convenience of the assembly and the maintenance of this application sensor support, longeron support, through setting up the connecting plate, the connecting plate is fixed with the sensor support or the longeron support that correspond, and specific can be modes such as integrative setting, welding, the connecting plate then passes through the fastener with mounting bracket board and is connected, makes things convenient for the dismouting to reduce the maintenance cost.

In a second aspect, an embodiment of the present application provides a method for testing a connection point of a front bracket of an automobile, including: adjusting the relative height of the collision body and the front bracket of the automobile beam system to be tested to enable the horizontal height of the collision body to be higher than that of the front bracket of the automobile beam system to be tested; fixedly connecting the front bracket of the automobile beam system to be tested to a wall body or a trolley, and fixedly connecting the collision body to one of the wall body or the trolley which is not fixedly connected with the front bracket of the automobile beam system to be tested; and (4) giving the initial speed of the trolley and driving towards the collision body so that the collision body collides with the front bracket of the automobile beam system to be tested to simulate the collision of the automobile power assembly on the front bracket of the automobile beam system to be tested.

The method for testing the connecting point of the front bracket of the automobile can be used for the testing device of the connecting point of the front bracket of the automobile provided by the first aspect, has the same technical effect as the testing device of the application when being applied to the testing device of the application, namely truly simulates the bearing condition that the front bracket is extruded by the power assembly of the automobile when the automobile collides frontally, and has the advantages of high simulation precision, strong applicability and repeatable testing.

In one possible implementation manner of the present application, the step of fixedly connecting the front bracket of the automobile beam system to be tested to the wall or the trolley, and the step of fixedly connecting the collision body to one of the front brackets of the automobile beam system to be tested, which is not fixedly connected to the wall or the trolley, is as follows: and fixedly connecting the collision body to a wall body, and fixedly connecting the front bracket of the automobile beam system to be tested to the trolley.

The automobile front bracket connecting point testing method provided by the embodiment of the application is characterized in that a collision body is fixedly connected to a wall body, an automobile beam system front bracket to be tested is fixedly connected to a trolley, and the automobile front bracket connecting point testing method is used for simulating the front collision situation of a running automobile and an obstacle, is closer to reality and is more real in simulation.

Drawings

Fig. 1 is a schematic view illustrating a sensor of an automobile front bracket connection point testing device according to an embodiment of the present application connected to an automobile beam system to be tested;

FIG. 2 is an overall view of a device for testing a connection point of a front bracket of an automobile according to an embodiment of the present disclosure;

FIG. 3 is a top view of an apparatus for testing connection points of a front bracket of an automobile according to an embodiment of the present disclosure;

FIG. 4 is a partial cutaway view of an impact assembly of the testing device for the connection point of the front bracket of the automobile provided by the embodiment of the application;

fig. 5 is a schematic view illustrating a bracket mounting plate of the device for testing a connection point of a front bracket of an automobile according to the embodiment of the present application being connected to a trolley;

FIG. 6 is a three-dimensional view of a support assembly of the testing device for the connection point of the front bracket of the automobile according to the embodiment of the present application;

FIG. 7 is a top view of a support assembly of the front bracket connection point testing device of the present application according to an embodiment of the present application;

FIG. 8 is a left side view of a support assembly of the front bracket connection point testing device of the automobile provided in the embodiment of the present application in FIG. 7;

fig. 9 is a flowchart of a method for testing a connection point of a front bracket of an automobile according to an embodiment of the present application.

Reference numerals:

1-trolley; 2-a support assembly; 21-a bracket mounting plate; 211-mounting holes; 212-stringer attachment holes; 213-a first series of holes; 214-a second pore system; 215-a third pore system; 22-stringer connection; 221-stringer welding plates; 222-stringer support; 23-sensor support group; 231-front anchor point sensor mount; 232-rear fixed point sensor mount; 233-side fixed point sensor support; 24-sensor mounting plate set; 241-front fixed point sensor mounting plate; 242-rear fixed point sensor mounting plate; 243-side fixed point sensor mounting plate; 25-a connecting plate; 26-a second fastener; 27-a third fastener; 28-a fourth fastener; 29-a cross beam; 3-an impact assembly; 31-a striker; 311-impact head; 312-a support portion; 313-a connecting portion; 32-a slide block; 33-a first fastener; 4-a sensor group; 41-front fixed point sensor; 411-front fixed point sensor body; 412-front fixed point transition bushing; 42-rear fixed point sensor; 421-rear fixed point sensor body; 422-rear fixed point transition shaft sleeve; 43-side fixed point sensor; 431-side fixed point sensor body; 432-side fixed point transition bushing; 5-fixing the barrier; a 51-T shaped chute; 6-automobile beam system to be tested; 61-front bracket; 611-front fixed point; 612-rear fixation point; 613-side fixing points; 62-a bracket extension structure; 63-front longitudinal beam.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.

In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The embodiment of the application provides a bracket tie point testing arrangement before car for the atress condition of car beam system when the simulation car head-on collision barrier, and gather the relevant data of bracket tie point before the car beam system when colliding, concrete be used for simulating the extrusion of car automobile power assembly to the bracket before the car beam system among the car head-on collision process, and gather joint strength and the failure parameter of bracket tie point before the car beam system in collision process.

Wherein, the automobile beam system to be tested may have various sizes or forms, referring to fig. 1, in an exemplary automobile beam system to be tested 6, the automobile beam system comprises a front bracket 61, a bracket extension structure 62 and two front longitudinal beams 63, the extension direction of the front bracket 61 is perpendicular to the automobile driving direction, the bracket extension structure 62 is "u" shaped, two ends of the bracket extension structure 62 are respectively and integrally connected with two ends of the front bracket 61, so that the front bracket 61 and the bracket extension structure 62 enclose a square frame structure, the power assembly of the automobile is placed in the square frame structure, the two front longitudinal beams 63 are both located above the bracket extension structure 62, the extension direction of the front longitudinal beams 63 is horizontally arranged and perpendicular to the extension direction of the front bracket 61, one end of the front longitudinal beams 63 far away from the front bracket 61 is fixed with the bracket extension structure 62, the front bracket 61 further comprises a plurality of connection points, the connection points are used for being fixed with other automobile body parts, specifically, the front fixing point 611, the rear fixing point 612 and the side fixing points 613 are symmetrically distributed at two ends of the front longitudinal beam 63, the front fixing point 611 at the same end of the front longitudinal beam 63 is positioned in front of the rear fixing point 612, the front fixing point 611 is higher than the rear fixing point 612, and the side fixing points 613 are positioned outside the rear fixing point 612 with reference to the forward driving direction of the automobile.

Referring to fig. 2 and 3, in an embodiment of the present application, the device for testing a connection point of a front bracket of an automobile includes a trolley 1, where the trolley 1 can move towards a wall at a set speed and collide with the wall to simulate a frontal collision situation between the automobile and an obstacle, and the wall is fixed on the ground, has a good load bearing capacity, and can provide a stable impact or load.

In addition, referring to fig. 2 and 3, the testing device for the connecting point of the front bracket of the automobile further comprises a supporting component 2 and an impact component 3, wherein the supporting component 2 is provided with a first end for fixedly connecting the trolley 1 or the wall, and a second end of the supporting component 2 is used for fixedly connecting an automobile beam system 6 to be tested; the impact module 3 is used for a fixed connection with the trolley 1 or a non-connected support module 2 in a wall body, and the impact module 3 is used for causing impact to the automobile beam system in collision.

Wherein, the automobile beam system 6 to be tested has different sizes or forms corresponding to different automobiles, the supporting components 2 with different specifications or styles are matched with different automobile beam systems 6 to be tested by arranging the supporting components 2 as intermediate connecting pieces, so that the testing equipment of the application has good applicability, meanwhile, the automobile beam system 6 to be tested of the same model connected on the supporting components 2 can be conveniently tested repeatedly by replacing the automobile beam system 6 to be tested of the same model connected on the supporting components 2, and meets the requirement of repeated testing, the specific automobile beam system 6 to be tested comprises a front bracket 61, a bracket extending structure 62 and other parts, in a testing preparation stage, the automobile beam system 6 to be tested and the second end of the supporting components 2 are fixed, the front longitudinal beam 63 part of the specific automobile beam system to be tested 6 is close to the second end of the supporting components 2, the bracket extending structure 62 part of the automobile beam system to be tested 6 is far away from the second end of the supporting components 2, i.e. the stressed bracket extension 62 of the vehicle's beam system 6 to be tested is in front and the front bracket 61 is in rear in a collision.

It should be noted that the supporting component 2 can be installed on a wall or a trolley 1 according to actual requirements, when the supporting component 2 is installed on the wall, the impact component 3 is correspondingly installed on the trolley 1, and the trolley 1 drives the impact component 3 to move towards the automobile beam system 6 to be tested and generate collision during testing, so as to simulate the scene of frontal collision when the automobile is static; when the supporting component 2 is installed on the trolley 1, the impact component 3 is correspondingly installed on a wall body, the trolley 1 drives the automobile beam system to be tested to move towards the impact component 3 and generate collision during testing, the situation that the running automobile collides with an obstacle in the front face is simulated, the installation positions of the supporting component 2 and the impact component 3 can be set according to actual testing requirements, the application range of the testing device is widened through the setting, and the universality is improved.

In addition, referring to fig. 2 and 3, the impact assembly 3 has an impact member 31 simulating a vehicle powertrain, the impact member 31 extends towards the support assembly 2, that is, the impact member 31 extends towards the tested vehicle beam system, specifically, the impact member 31 extends towards a front bracket 61 of the tested vehicle beam system, during testing, a bracket extension structure 62 of the tested vehicle beam system collides with a wall or an end surface of the trolley 1 first and deforms therewith, and along with the deformation of the vehicle beam system bracket extension structure 62, the impact member 31 collides with and presses the front bracket 61 of the tested vehicle beam system, and the process truly simulates that during frontal collision of the vehicle, the front part of the vehicle body deforms first and presses the vehicle powertrain located in a front cabin, and the process that the vehicle powertrain moves towards the front bracket 61 after being pressed, by arranging the impact member 31 extending towards the front bracket 61 of the tested vehicle beam system, the utility model provides a testing arrangement has effectively simulated out the bearing order of front end structure of car among the frontal collision process, and the characteristics that bear of car front bracket 61, thereby provide accurate test data, the intensity characteristic and the failure parameter of the front bracket 61 tie point of the car beam system 6 that awaits measuring in the collision process promptly, this test data can regard as whole car development and emulation simulation to the effective reference data of mark, compare with the scheme that is difficult to effectively simulate car front bracket 61 and receives the extrusion of automobile power assembly in the frontal collision among the correlation technique, the testing arrangement of this application, through setting up the impact piece 31 that stretches out by test car beam system front bracket 61, the bearing condition that front bracket 61 received the extrusion of automobile power assembly when can really simulate out the car frontal collision, have the simulation precision height, the suitability is strong, the advantage of repeatable test.

In order to facilitate data acquisition of the automobile beam system 6 to be tested, referring to fig. 1 and 2, in an embodiment of the application, the automobile front bracket connection point testing device further comprises a sensor, the sensor is arranged at a connection point position of the automobile beam system 6 front bracket 61 to be tested, and the sensor is used for acquiring data of the connection point of the automobile beam system 6 front bracket 61 to be tested in a collision process. The sensor is mainly used for collecting and recording force-bending moment signals of a connecting point of a front bracket 61 of an automobile beam system 6 to be tested in a collision test, the sensor is arranged at the connecting point of the front bracket 61 of the automobile beam system 6 to be tested, the connecting point of the front bracket 61 of the automobile beam system is used for connecting the front bracket 61 with other automobile body structures and is also the position where the stress of the front bracket 61 is most concentrated, and the strength characteristic and failure parameters of the connection of the front bracket 61 are important indexes in the design of the front bracket 61.

On the basis, in order to facilitate the connection between the impact member 31 and the trolley 1 or the wall and ensure the impact effect of the impact member 31 on the automobile beam system 6 to be tested, referring to fig. 2, 3 and 4, in an embodiment of the present application, the impact member 31 includes an impact head 311, a support 312 and a connection portion 313, the impact head 311 and the connection portion 313 are respectively fixed at two ends of the support 312, the impact head 311 extends towards the support component 2 for simulating the automobile power assembly, and the connection portion 313 is fixedly connected with one of the trolley 1 or the wall to which the support component 2 is not connected. The impact head 311 in the impact piece 31 is used for directly colliding with the automobile beam system 6 to be tested, the connecting part 313 is used for fixing the impact piece 31 on the wall or the trolley 1 so as to ensure the stability of the impact piece in the collision process, the supporting part 312 is used for connecting the impact head 311 with the connecting part 313 and increasing the length of the impact piece 31, so that the impact head 311 can extend into the supporting component 2, and therefore the deformation of the front longitudinal beam 63 and the bracket extending structure 62 in the collision process of the automobile beam system 6 to be tested is simulated, and then the bearing sequence of the stress of the bracket body is carried out.

The impact head 311 may have various shapes, such as a triangular prism, a cylinder, etc., and any shape that can simulate the contact surface between the automobile power assembly and the front bracket 61 of the automobile beam system 6 to be tested is within the protection scope of the present application, and in order to ensure that the impact head 311 can better simulate the automobile power assembly, referring to fig. 2, 3 and 4, in an embodiment of the present application, the impact head 311 is cylindrical and extends along a horizontal direction, and the extending direction of the impact head 311 is perpendicular to the moving direction of the trolley 1. The impact head 311 extends in the horizontal direction, and the extending direction of the impact head is perpendicular to the moving direction of the trolley 1, so that the impact area of the impact head 311 and the automobile beam system 6 to be tested in the horizontal direction is larger, the front bracket 61 of the automobile beam system 6 to be tested is subjected to uniform impact on the whole, the situation that the stress of the automobile power assembly is extruded towards the front bracket 61 of the automobile beam system 6 to be tested on the whole in the direct impact process is simulated, and the cylindrical impact head 311 is high in bearing capacity and more impact-resistant.

Furthermore, the forms of the support portion 312 and the connection portion 313 may be various, and the support portion may be, for example: single pole, support frame, I-beam etc. the connecting portion for example: for the purpose of saving material and reducing cost on the premise of ensuring the structural strength of the impact member 31, referring to fig. 2, 3 and 4, in an embodiment of the present application, the connecting portion 313 is a flat plate structure, the supporting portion 312 includes a plurality of rod-shaped structures arranged in parallel, specifically includes four rod-shaped structures, the four rod-shaped structures are distributed at four corners of the connecting portion 313, an included angle between the supporting portion 312 and the horizontal direction of the connecting portion 313 is an acute angle, and the connecting portion 313 is higher than the impact head 311.

In the above structure, the support part 312 between the connection part 313 and the impact head 311 is a frame support, which requires less material, thereby reducing the cost, and the plurality of rod-shaped structures provide support for the impact head 311, which can ensure the structural strength of the impact member 31, and in addition, the rod-shaped structure of the connection part 313 increases the length of the impact member 31, so that the impact head 311 can protrude toward the support assembly 2. In the real collision process, the force applied by the automobile power assembly to the automobile beam system front bracket 61 is downward in an inclined manner, the force applied by the automobile beam system to the automobile power assembly is upward in an inclined manner, and the test process simulates the situation, namely, the force applied by the automobile beam system to be tested to the impact piece 31 is upward in an inclined manner, in order to enhance the bearing capacity of the impact head 311, the rod-shaped structure of the supporting part 312 is arranged downward in an inclined manner, specifically, the included angle between the horizontal direction of the supporting part 312 and the horizontal direction of the connecting part 313 is set to be an acute angle, and the connecting part 313 is higher than the impact head 311, so that the rod-shaped structure of the supporting part 312 is basically consistent with the direction of the impact force applied by the supporting part, the bending moment borne by the rod-shaped structure is smaller, and is not easy to break and break, and the bearing capacity of the impact piece 31 is improved.

In an alternative implementation manner, the testing apparatus for the connection point of the front bracket of the automobile further includes a fixed barrier 5, referring to fig. 2, 3 and 4, the fixed barrier 5 is used for being fixed to the ground to simulate a wall, the first end of the supporting component 2 is used for being connected to the trolley 1 or the fixed barrier 5, and the connecting portion 313 is fixedly connected to one of the trolley 1 or the fixed barrier 5, which is not connected to the supporting component 2. The fixed barrier 5 can be used for simulating a wall body, the fixed barrier is firmly fixed on the ground, the stability in the collision process can be ensured, the first end of the supporting component 2 can be connected to the trolley 1 or the fixed barrier 5, when the first end of the supporting component 2 is connected with the trolley 1, the impact piece 31 is fixed on the fixed barrier 5, during testing, the trolley 1 carries the automobile beam system 6 to be tested to collide towards the impact piece 31 on the fixed barrier 5, the reaction force of the impact piece 31 generates impact on the automobile beam system 6 to be tested, when the first end of the supporting component 2 is connected with the fixed barrier 5, the impact piece 31 is fixed on the trolley 1, during testing, the trolley 1 carries the impact piece 31 to collide towards the automobile beam system 6 to be tested on the fixed barrier 5, so that the impact piece 31 generates impact on the automobile beam system 6 to be tested.

In order to enable the impact member 31 to be adjusted in the horizontal direction, so that the impact member 31 can impact the front bracket 61 of the automobile beam system 6 to be tested more accurately, referring to fig. 2, 3 and 4, in an embodiment of the present application, the first end of the supporting assembly 2 is fixedly connected to the trolley 1, the connecting portion 313 is fixedly connected to the fixed barrier 5, the fixed barrier 5 is provided with a T-shaped sliding slot 51 in the horizontal direction, the T-shaped sliding slot 51 is slidably connected to the sliding block 32, the connecting portion 313 is fixed to the sliding block 32 by the first fastening member 33, and the sliding block 32 can be locked to the fixed barrier 5 by the first fastening member 33. The fixed barrier 5 fixed with the connecting part 313 of the impact piece 31 is provided with a T-shaped sliding groove 51, the connecting part 313 is connected with a sliding block 32, the sliding block 32 slides in the T-shaped sliding groove 51, so that the position of the impact piece 31 in the horizontal direction is adjusted, the impact piece 31 can be opposite to the collision position of the automobile beam system 6 to be tested in the horizontal direction, and the T-shaped sliding groove 51 is arranged because the T-shaped sliding groove 51 is provided with a limit flange which can limit the sliding block 32, and the sliding block 32 can be prevented from being separated from the T-shaped sliding groove 51 by the force vertical to the fixed barrier 5. The connecting portion 313 is connected to the sliding block 32 by a first fastening member 33, such that the connecting portion 313 and the sliding block 32 are easily assembled and disassembled, and in particular, the first fastening member 33 may be a screw, the first fastening member 33 passes through the connecting portion 313 in a direction perpendicular to the fixing barrier 5, and is screwed into the slider 32 through the opening of the T-shaped chute 51, and when the first fastening member 33 is tightened, the slider 32 comes closer to the connecting portion 313, because the limit flange of the T-shaped sliding groove 51 is positioned between the sliding block 32 and the connecting part 313, the limit flange is gradually extruded by the sliding block 32, the friction force between the sliding block 32 and the limit flange of the T-shaped sliding groove 51 is gradually increased, thereby preventing the slide block 32 from sliding along the extending direction of the T-shaped slide groove 51, locking the slide block 32 in the T-shaped slide groove 51, that is, the first fastening member 33 locks and fixes the impact member 31, the slider 32 and the fixed barrier 5 at the same time, so that the convenience of adjusting the position of the impact member 31 is improved.

In addition, in order to facilitate the height adjustment of the impact member 31 to adapt to a plurality of automobile beam systems 6 to be tested with different heights, referring to fig. 2, 3 and 4, in an embodiment of the present application, there are a plurality of T-shaped sliding grooves 51, the plurality of T-shaped sliding grooves 51 are uniformly arranged along the vertical direction, and the T-shaped sliding grooves 51 penetrate through the fixed barrier 5 along the extending direction thereof. Through arranging the T-shaped chutes 51 on the fixed barrier 5, the chutes are uniformly distributed in the vertical direction, when the connecting part 313 of the impact piece 31 is connected with the T-shaped chutes 51 at different heights, the height of the impact piece 31 is changed, the impact piece 31 with adjustable height can adapt to the automobile beam systems 6 to be tested at different heights, thereby widening the application scene of the testing device, improving the universality of the testing device, in order to facilitate the adjustment of the impact piece 31 among the T-shaped chutes 51 at different heights, the T-shaped chute 51 penetrates through the fixed barrier 5 along the extension direction, in the specific adjustment, only the fastening part between the connecting part 313 and the sliding block 32 needs to be loosened, so that the sliding block 32 can slide in the T-shaped chute 51, slide out from the end part of the T-shaped chute 51 and then slide in from the end part of the other T-shaped chute 51, thereby changing the height of the impact piece 31, and the impact piece 31 is adjusted to a proper position in the horizontal direction, and the connecting part 313, the sliding block 32 and the fixed barrier 5 are locked by the fastening piece.

In one embodiment of the present disclosure, the projection of the connecting portion 313 on the fixed barrier 5 covers three T-shaped sliding grooves 51, and the number and distribution of the sliding blocks 32 are four, wherein two sliding blocks 32 slide in the upper T-shaped sliding groove 51 of the three T-shaped sliding grooves 51, the other two sliding blocks slide in the lower T-shaped sliding groove 51 of the three T-shaped sliding grooves 51, and the four sliding blocks 32 are fixed at four corners of the connecting portion 313, according to the projection area and shape of the connecting portion 313 on the fixed barrier 5, referring to fig. 2, 3, and 4.

In order to fix the support component 2 to the trolley 1 or the wall and adjust the position of the support component 2 according to actual needs, referring to fig. 2, fig. 3 and fig. 5, in an embodiment of the present application, the support component 2 includes a vertically disposed support mounting plate 21 and a longitudinal beam connecting portion 22, the support mounting plate 21 is provided with mounting holes 211, the support mounting plate 21 is fixed to one of the trolley 1 or the wall through the mounting holes 211, the specific mounting holes 211 have sixteen mounting holes, four of the sixteen mounting holes 211 are in a group, four mounting holes 211 in a group are arranged in a square shape, four groups of mounting holes 211 are distributed at four corners of the support mounting plate 21, each mounting hole 211 is provided with a second fastener 26 for connecting the trolley 1 or the wall, and the longitudinal beam connecting portion 22 is used for fixing to the automobile beam system 6 to be tested. Through setting up support mounting panel 21, and set up mounting hole 211 on support mounting panel 21, thereby can be convenient through the fastener with supporting component 2 and platform truck 1 or wall body installation or dismantlement, the convenience of supporting component 2 installation has been improved, and the convenient degree of the adjustment of the 2 mounted position of supporting component, in addition, for the convenience is fixed with the car roof beam system 6 that awaits measuring, still be provided with the longeron connecting portion 22 fixed with support mounting panel 21, will await measuring car roof beam system 6 through longeron installation department and fix on support mounting panel 21, and then firmly fix longeron installation department and platform truck 1 or wall body.

It should be noted that, the fixing of the automobile beam system 6 to be tested on the supporting component 2 may be implemented in various manners, such as welding, clamping, fastening, and the like, and in order to ensure that the automobile beam system 6 to be tested can be firmly fixed with the supporting component 2, referring to fig. 6, 7, and 8, in an embodiment of the present application, the longitudinal beam connecting portion 22 includes a longitudinal beam welding plate 221 and a longitudinal beam bracket 222, the longitudinal beam welding plate 221 is used for being welded and fixed with the front longitudinal beam 63 of the automobile beam system 6 to be tested, and the longitudinal beam connecting plate 25 and the bracket mounting plate 21 are respectively fixed at two ends in the extending direction of the longitudinal beam bracket 222. Through setting up longeron welded plate 221, longeron welded plate 221 is in the same place with the front longitudinal 63 welding of the automobile beam system 6 that awaits measuring, and welded connection intensity is high, need not to handle front longitudinal 63's structure simultaneously to guaranteed the integrality of front longitudinal 63's structure, simulation automobile beam system is better at the effect of frontal collision in-process power transmission.

In order to facilitate the positioning of the sensor, referring to fig. 6, 7 and 8, in an embodiment of the present application, the support assembly 2 further includes a sensor bracket, a first end of the sensor bracket is fixed with the bracket mounting plate 21, a second end of the sensor bracket extends to a connection point position of the front bracket 61 of the automobile beam system 6 to be tested, and the sensor is fixed at a second end of the sensor bracket and abuts against the connection point position of the front bracket 61 of the automobile beam system 6 to be tested. Through setting up the sensor support, the first end of sensor support is fixed on bracket mounting panel 21, and fix the sensor at the second end of sensor support, thereby with sensor and bracket mounting panel 21 relatively fixed, simultaneously because the automobile beam system 6 that awaits measuring passes through longeron welded plate 221 and longeron support 222 to be fixed on bracket mounting panel 21, consequently the sensor is relatively fixed with the automobile beam system 6 that awaits measuring, through extending to the tie point position of the automobile beam system 6 front bracket 61 that awaits measuring with the second end of sensor, alright easily fix the sensor to the tie point position of the automobile beam system 6 front bracket 61 that awaits measuring.

On this basis, in order to improve the testing efficiency and the testing accuracy, referring to fig. 6, 7 and 8, in an embodiment of the present application, there are a plurality of sensors and sensor holders, and the plurality of sensors and the plurality of sensor holders are arranged in a one-to-one correspondence manner. The sensors can be arranged at a plurality of positions to be measured of the automobile beam system 6 to be tested, data of the positions to be measured are obtained simultaneously in a collision process, so that the testing efficiency is improved, the automobile beam system 6 to be tested is of a symmetrical structure, the data of the opposite positions to be measured in the collision process are converged, when the two sensors are positioned at the symmetrical positions to be measured of the automobile beam system 6 to be tested, the testing data can be mutually contrasted, random errors are eliminated, and the testing precision is improved. In addition, the sensor support also plays the positioning action to the sensor when playing the supporting role to the sensor, through setting up a plurality of sensor supports and a plurality of sensor one-to-one, can not cause the influence to other sensors when single sensor needs the adjustment position.

The plurality of sensors form a sensor group 4, the plurality of sensor supports form a sensor support group 23, and referring to fig. 6, 7 and 8, the sensor group 4 includes two front fixed point sensors 41, two rear fixed point sensors 42 and two side fixed point sensors 43, the front fixed point sensors 41 are used for measuring front fixed points 611 of a front bracket 61 of the automobile beam system 6 to be tested, the rear fixed point sensors 42 are used for measuring rear fixed points 612 of the front bracket 61 of the automobile beam system 6 to be tested, and the side fixed point sensors 43 are used for measuring side fixed points 613 of the front bracket 61 of the automobile beam system 6 to be tested. The sensor holder set 23 includes two front fixed point sensor holders 231, two rear fixed point sensor holders 232, and two side fixed point sensor holders 233, where the two front fixed point sensor holders 231 correspond to the two front fixed point sensors 41, the two rear fixed point sensor holders 232 correspond to the two rear fixed point sensors 42, and the two side fixed point sensor holders 233 correspond to the two side fixed point sensors 43.

It should be noted that different sensor holders may have different structures, and referring to fig. 6, 7 and 8, in an embodiment of the present application, two front fixed point sensor holders 231 are bent toward each other at ends away from the holder mounting plate 21 at an obtuse angle, and in order to enhance the strength of the front fixed point sensor holders 231, a cross beam 29 is disposed between the two front fixed point sensor holders 231, the cross beam 29 is disposed horizontally and parallel to the holder mounting plate 21, the cross beam 29 is disposed integrally with the two front fixed point sensor holders 231, the rear fixed point sensor holder 232 is formed by two cylindrical rods parallel to each other, and the side fixed point sensor holder 233 is also formed by two cylindrical rods parallel to each other.

To facilitate assembly and maintenance of the sensor and the sensor holder, referring to fig. 6, 7 and 8, in one embodiment of the present application, a sensor mounting plate is disposed between the sensor and the sensor holder, the sensor mounting plate is fixed to the sensor holder, and the sensor mounting plate are connected by a fourth fastener 28. Through setting up the sensor mounting panel, fixed sensor mounting panel and sensor support, the sensor is then connected with the sensor mounting panel through fourth fastener 28, the installation and dismantlement of being convenient for to make things convenient for the assembly and the maintenance of sensor, reduced the maintenance cost of this device, improved the ease for use of this device.

It should be noted that the sensor mounting plate can have various forms, referring to fig. 6, 7 and 8, in an embodiment of the present application, a front fixed point sensor mounting plate 241 is provided between the front fixed point sensor 41 and the front fixed point sensor support 231, the front fixed point sensor mounting plate 241 is a square plate and horizontally arranged, two adjacent sides of the front fixed point sensor mounting plate 241 are fixed to the front fixed point sensor support 231, and the front fixed point sensor 41 is fixed to a lower center position of the front fixed point sensor mounting plate 241 by four fourth fastening members 28. A rear fixed point sensor mounting plate 242 is arranged between the rear fixed point sensor 42 and the rear fixed point sensor support 232, the rear fixed point sensor mounting plate 242 is an L-shaped plate, the vertical outer side of the rear fixed point sensor mounting plate 242 is fixed with the rear fixed point sensor support 232, and the horizontal outer side, namely the lower side, is fixed with the rear fixed point sensor 42 through four fourth fasteners 28. The side fixed point sensor mounting plate 243 is arranged between the side fixed point sensor 43 and the side fixed point sensor bracket 233, the side fixed point sensor mounting plate 243 is an L-shaped plate, the vertical outer side of the side fixed point sensor mounting plate 243 is fixed with the side fixed point sensor bracket 233, the horizontal outer side, namely the lower side, is fixed with the side fixed point sensor 43 through four fourth fastening pieces 28, the front fixed point sensor mounting plate 241, the rear fixed point sensor mounting plate 242 and the side fixed point sensor mounting plate 243 form the sensor mounting plate group 24 together, and in addition, ribs are arranged on the inner sides of the rear fixed point sensor mounting plate 242 and the side fixed point sensor mounting plate 243 for enhancing the bearing capacity.

Because the size of the connecting point of the front bracket 61 of the automobile beam system 6 to be tested is different, in order to enable the sensor to be adapted to the connecting points of the front bracket 61 of the automobile beam system 6 to be tested with different sizes, referring to fig. 1, 6, 7 and 8, in one embodiment of the application, the sensor comprises a sensor body and a transition shaft sleeve, the transition shaft sleeve is provided with an external thread, the first end of the transition shaft sleeve is in threaded connection with the sensor body, and the second end of the sensor is in threaded connection with the connecting point of the automobile beam system 6 to be tested. The sensor body is arranged and used for collecting and recording force-bending moment signals in the collision process, the transition shaft sleeve is arranged, the transition shaft sleeve can be well connected with the connecting point of the automobile beam system 6 front bracket 61 to be tested in an adaptive mode and can be connected with the sensor body, the strength characteristic and failure parameters of the connecting point of the automobile beam system 6 front bracket 61 to be tested are transmitted to the sensor body through the transition shaft sleeve, and therefore the connecting point of the automobile beam system front bracket 61 can be adapted under the condition that the sensor is not replaced, the universality of the device is improved, and meanwhile, the cost is lower.

It should be noted that the transition bushings corresponding to different connection points may have different forms, and the diameters of the two ends of the same transition bushing may be different, referring to fig. 1, 6, 7 and 8, in an embodiment of the present application, the front fixed point sensor 41 includes a front fixed point sensor body and a front fixed point transition bushing 412, the front fixed point transition bushing 412 is used for connecting with a front fixed point 611 of the front bracket 61 of the automobile beam system 6 to be tested, specifically, the front longitudinal beam 63 of the automobile beam system 6 to be tested shown in fig. 1 is perforated, and the front fixed point transition bushing 412 is connected with the front fixed point 611 after passing through the hole; the rear fixed point sensor 42 comprises a rear fixed point sensor body and a rear fixed point transition shaft sleeve 422, and the rear fixed point transition shaft sleeve 422 is used for connecting with a rear fixed point 612 of the front bracket 61 of the automobile beam system 6 to be tested; the side fixed point sensor 43 includes a side fixed point sensor body and a side fixed point transition bushing 432, the side fixed point transition bushing 432 is used for connecting with a side fixed point 613 of a front bracket 61 of the automobile beam system 6 to be tested.

Furthermore, due to the provision of the transition bushings, the connection points of the front brackets 61 of the automobile beam system 6 to be tested can be connected to corresponding sensor brackets, which also serve to support the automobile beam system 6 to be tested, wherein the sensor brackets and the stringer brackets 222 can each have various orientations, for example, with reference to fig. 6, 7 and 8, in one embodiment of the present application, the sensor brackets and the stringer brackets 222 are each arranged horizontally.

To facilitate assembly and maintenance of the sensor bracket, the longitudinal beam bracket 222 of the present application, and referring to fig. 6, 7 and 8, in one embodiment of the present application, the sensor bracket and the longitudinal beam bracket 222 are both fixed to the bracket mounting plate 21 by a connecting plate 25, and the connecting plate 25 is fixed to the bracket mounting plate 21 by a third fastener 27. Through setting up the connecting plate 25, the connecting plate 25 is fixed with the sensor bracket or longeron support 222 that correspond, and specific can be modes such as integrative setting, welding, the connecting plate 25 is then connected through third fastener 27 with mounting panel 21, makes things convenient for the dismouting to reduce the maintenance cost.

It should be noted that the sizes of the connecting plates 25 corresponding to different sensor brackets and the longitudinal beam bracket 222 are not the same, and the connecting plates are set according to the actual load bearing size, and the corresponding bracket mounting plate 21 is provided with corresponding hole systems for fixing the connecting plates 25, specifically, referring to fig. 5, the bracket mounting plate 21 includes longitudinal beam connecting hole systems 212, the longitudinal beam connecting hole systems 212 are divided into two symmetrical groups, each group has four threaded holes arranged in a rectangular shape, and the longitudinal beam connecting hole systems 212 are used for connecting the bracket mounting plate 21 and the longitudinal beam bracket 222; the bracket mounting plate 21 comprises first hole systems 213, the first hole systems 213 are divided into two symmetrical groups, each group is provided with four threaded holes which are arranged in a square shape, and the first hole systems 213 are used for connecting the bracket mounting plate 21 with the bracket 231 of the front connection point 611 sensor 41; the bracket mounting plate 21 comprises second hole systems 214, the second hole systems 214 are divided into two symmetrical groups, each group is provided with four threaded holes which are arranged in a square shape, and the second hole systems 214 are used for connecting the bracket mounting plate 21 with the rear fixed point sensor bracket 232; the bracket mounting plate 21 comprises a third hole system 215, the third hole system 215 is divided into two symmetrical groups, each group is provided with four threaded holes which are arranged in a square shape, and the third hole system 215 is used for connecting the bracket mounting plate 21 with the side fixed point sensor bracket 233;

in addition, the embodiment of the application also provides a method for testing the connecting point of the front bracket of the automobile, and referring to fig. 9, the method for testing the connecting point of the front bracket of the automobile mainly comprises the following steps:

step S1: adjusting the relative height of the collision body and the front bracket 61 of the automobile beam system 6 to be tested to enable the horizontal height of the collision body to be higher than that of the front bracket 61 of the automobile beam system 6 to be tested;

step S2: fixedly connecting a front bracket 61 of the automobile beam system 6 to be tested to a wall body or a trolley 1, and fixedly connecting a collision body to one of the wall body or the trolley 1 which is not fixedly connected with the front bracket 61 of the automobile beam system 6 to be tested;

step S3: the trolley 1 is given an initial speed and runs towards the collision body, so that the collision body collides with the front bracket 61 of the automobile beam system 6 to be tested to simulate the collision of the automobile power assembly on the front bracket 61 of the automobile beam system 6 to be tested.

When the method is applied to the testing device, the technical effect is the same as that of the testing device, namely the bearing condition that the front bracket 61 is extruded by the automobile power assembly when the automobile collides frontally is truly simulated, and the method has the advantages of high simulation precision, strong applicability and repeatable testing.

In step S2, the step of fixedly connecting the front bracket 61 of the automobile beam system 6 to be tested to the wall or the trolley 1, and the step of fixedly connecting the collision body to one of the wall or the trolley 1 to which the front bracket 61 of the automobile beam system 6 to be tested is not fixedly connected, includes: the collision body is fixedly connected to a wall body, and the front bracket 61 of the automobile beam system 6 to be tested is fixedly connected to the trolley 1.

Through will colliding body fixed connection on the wall body, will await measuring 6 front brackets 61 fixed connection of car beam system on platform truck 1 for the sight that the car that the simulation was gone and barrier took place frontal collision more closes to reality, and the simulation is also more true.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims

1. The utility model provides a bracket tie point testing arrangement before car which characterized in that includes:

a trolley;

the supporting component is provided with a first end used for fixedly connecting the trolley or the wall body, and a second end of the supporting component is used for fixedly connecting an automobile beam system to be tested;

the impact component is fixedly connected with one of the trolley or the wall body which is not connected with the support component, and is provided with an impact piece simulating an automobile power assembly, and the impact piece extends towards the support component;

the sensor is arranged at the connecting point position of the automobile beam system front bracket to be tested and used for acquiring data of the connecting point of the automobile beam system front bracket to be tested in the collision process.

2. The device for testing the connection point of the front bracket of the automobile as claimed in claim 1, wherein the impact member comprises an impact head, a support part and a connection part, the impact head and the connection part are respectively fixed at two ends of the support part, the impact head extends towards the support component and is used for simulating an automobile power assembly, and the connection part is fixedly connected with one of the trolley or the wall body which is not connected with the support component.

3. The device for testing the connection point of the front bracket of the automobile as claimed in claim 2, wherein the impact head is cylindrical and extends in a horizontal direction, and the extension direction of the impact head is perpendicular to the movement direction of the trolley.

4. The device for testing the connection point of the front bracket of the automobile as claimed in claim 2, wherein the supporting portion comprises a plurality of rod-shaped structures arranged in parallel, the included angle between the supporting portion and the horizontal direction of the connecting portion is an acute angle, and the connecting portion is arranged higher than the impact head.

5. The device for testing the connection point of the front bracket of the automobile as claimed in claim 2, further comprising a fixed barrier for fixing with the ground to simulate a wall, wherein the first end of the supporting component is used for connecting the trolley or the fixed barrier, and the connecting part is fixedly connected with one of the trolley or the fixed barrier, which is not connected with the supporting component.

6. The device for testing the connection point of the front bracket of the automobile as claimed in claim 5, wherein the first end of the supporting component is fixedly connected with the trolley, the connecting portion is fixedly connected with the fixed barrier, the fixed barrier is provided with a T-shaped sliding groove in a horizontal direction, a sliding block is slidably connected in the T-shaped sliding groove, the connecting portion is fixed with the sliding block through a fastening member, and the fastening member can lock the sliding block with the fixed barrier.

7. The device for testing the connection point of the front bracket of the automobile as claimed in claim 6, wherein the number of the T-shaped chutes is plural, the T-shaped chutes are uniformly arranged along a vertical direction, and the T-shaped chutes penetrate through the fixed barrier along an extending direction of the T-shaped chutes.

8. The automobile front bracket connection point testing device as claimed in claim 1, wherein the supporting component comprises a vertically arranged bracket mounting plate and a longitudinal beam connecting part, the bracket mounting plate is provided with a mounting hole, the bracket mounting plate is fixed with one of the trolley or the wall body through the mounting hole, and the longitudinal beam connecting part is used for being fixed with an automobile beam system to be tested.

9. The device for testing the connection point of the front bracket of the automobile as claimed in claim 8, wherein the longitudinal beam connecting portion comprises a longitudinal beam welding plate and a longitudinal beam bracket, the longitudinal beam welding plate is used for being welded and fixed with the front longitudinal beam of the automobile beam system to be tested, and the longitudinal beam connecting plate and the bracket mounting plate are respectively fixed at two ends of the longitudinal beam bracket in the extending direction.

10. The automotive front bracket connection point testing device of claim 9, wherein the support assembly further comprises a sensor bracket, a first end of the sensor bracket is fixed to the bracket mounting plate, a second end of the sensor bracket extends to a connection point position of the automotive front bracket to be tested, and the sensor is fixed to a second end of the sensor bracket and abuts against the connection point position of the automotive front bracket to be tested.

11. The device for testing the connection point of the front bracket of the automobile as claimed in claim 10, wherein a sensor mounting plate is arranged between the sensor and the sensor bracket, the sensor mounting plate is fixed with the sensor bracket, and the sensor is connected with the sensor mounting plate through a fastener.

12. The device for testing the connection point of the front bracket of the automobile as claimed in claim 10, wherein there are a plurality of the sensors and the sensor supports, and the plurality of the sensors are arranged in one-to-one correspondence with the plurality of the sensor supports.

13. The automotive front bracket connection point testing device of claim 1, wherein the sensor comprises a sensor body and a transition bushing, the transition bushing has external threads, a first end of the transition bushing is in threaded connection with the sensor body, and a second end of the sensor is in threaded connection with the connection point of the automotive beam system front bracket to be tested.

14. The vehicle front bracket connection point testing device of claim 10, wherein the sensor bracket and the longitudinal beam bracket are both fixed to the bracket mounting plate by a connecting plate, and the connecting plate is fixed to the bracket mounting plate by a fastener.

15. A method for testing a connecting point of an automobile front bracket is characterized by comprising the following steps:

adjusting the relative height of a collision body and a front bracket of the automobile beam system to be tested to enable the horizontal height of the collision body to be higher than that of the front bracket of the automobile beam system to be tested;

fixedly connecting the front bracket of the automobile beam system to be tested to a wall body or a trolley, and fixedly connecting the collision body to one of the wall body or the trolley which is not fixedly connected with the front bracket of the automobile beam system to be tested;

and giving the initial speed of the trolley, and running towards the collision body so that the collision body collides with the front bracket of the automobile beam system to be tested to simulate the collision of the automobile power assembly on the front bracket of the automobile beam system to be tested.

16. The method for testing the connection point of the front bracket of the automobile as claimed in claim 15, wherein the step of fixedly connecting the front bracket of the automobile beam system to be tested to a wall or a trolley, and the step of fixedly connecting the collision body to one of the wall or the trolley to which the front bracket of the automobile beam system to be tested is not fixedly connected comprises the steps of:

and fixedly connecting the collision body to the wall body, and fixedly connecting the front bracket of the automobile beam system to be tested to the trolley.