CN112611570A - Device and method for testing static strength of road vehicle body - Google Patents
Device and method for testing static strength of road vehicle body Download PDFInfo
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- 238000010998 test method Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 13
- 238000003556 assay Methods 0.000 claims description 5
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- G—PHYSICS
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- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention relates to a device and a method for testing the static strength of a road vehicle body. The test method comprises the following steps: connecting a connecting support assembly to an airbag mounting seat of a vehicle body to vertically support the vehicle body; connecting the connecting and supporting assembly to a thrust rod support of the vehicle body, and simulating longitudinal loading of the bogie on the vehicle body by using the connecting and supporting assembly so as to simulate the running condition of longitudinal traction and braking of the road vehicle under the action of vertical supporting force; connecting one end of a connecting assembly to an anti-collision device arranged at the front end of the vehicle body, and loading longitudinal tensile and compressive loads on the vehicle body so as to simulate the longitudinal force applied to the vehicle body in a collision or rescue situation; and connecting a connecting base to a hinge plate provided at a rear end of the vehicle body to simulate a longitudinal force between the multi-consist vehicle modules in cooperation with the connecting assembly.
Description
Technical Field
The invention belongs to the technical field of vehicle safety, and particularly relates to a test device and a test method for static strength of a road vehicle body.
Background
In 2017, 6.2.6.7, a brand-new traffic product named as an intelligent rail express transport system (hereinafter referred to as an intelligent rail) developed by institute of electric locomotives, zhou tian, ltd. The novel transportation means integrating the advantages of modern trams and buses belongs to the field of transboundary operation. The urban traffic control system subverts the traditional understanding of people on urban traffic and brings new selection and experience for solving the difficulty of going out in large and medium cities. The intelligent rail system as a medium-low traffic urban rail transit is operated in the places such as Tanzhou, Yibin and the like, and scientific research and construction work is started in a plurality of domestic cities.
A virtual tram is a multi-consist rubber-tyred vehicle that travels on a road surface. As an important component of an intelligent rail system, the virtual rail electric car integrates the advantages of rail transit and a road passenger car, has virtual track following capability and bears a vehicle by a fully-electrically driven rubber wheel. The body strength of the virtual track tramcar mainly refers to a standard TB/T3550 locomotive vehicle strength design and test identification standard, combines a TB/T3548-2019 locomotive vehicle strength design and test identification standard general rule, and refers to a standard EN 12663-1: 2010 railway application-rail vehicle body structure requirements-first part: locomotive and passenger vehicles (and alternatives to trucks) specify class P-V vehicles and industry-related standard requirements.
However, the virtual rail tram is a road vehicle running on a road surface, and the actual running condition of the virtual rail tram is greatly different from that of the traditional rail vehicle, so that a GB/T6792 passenger car frame stress and deformation measurement method needs to be referred to. Therefore, there is a need in the art for a static strength test technique for a road vehicle body, which is used for performing a static strength test on the vehicle body according to a vehicle body structure and an operation condition of a virtual track electric vehicle to accurately determine the strength and rigidity of each position of the vehicle body, so as to search for a position with a large stress strain in the vehicle body structure and a weak point with a small safety coefficient to optimize the vehicle body structure.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In order to meet the requirement of a static strength test of a vehicle body of a virtual rail electric vehicle, the invention provides a static strength test device of the vehicle body of the road vehicle and a static strength test method of the vehicle body of the road vehicle, which are used for carrying out the static strength test of the vehicle body aiming at the characteristics of the vehicle body structure and the operating condition of the virtual rail electric vehicle so as to accurately determine the strength and the rigidity of each position of the vehicle body, and further search the position with larger stress strain and the weak point with smaller safety coefficient in the vehicle body structure to optimize the vehicle body structure.
The invention provides a test device for the static strength of the road vehicle body, which comprises: the connecting assembly is connected with the anti-collision device arranged at the front end of the vehicle body at one end and used for loading longitudinal tensile and compressive loads on the vehicle body so as to simulate the longitudinal force applied to the vehicle body under the collision or rescue condition; the connecting seat is connected with the hinged disc arranged at the rear end of the vehicle body and is used for matching with the connecting assembly to simulate the longitudinal force between the multi-grouped vehicle modules; and the connecting and supporting assembly is connected with the air bag mounting seat of the vehicle body and used for vertically supporting the vehicle body, and the connecting and supporting assembly is also connected with a thrust rod support of the vehicle body and used for simulating the longitudinal loading of the vehicle body by the bogie so as to simulate the running working condition of longitudinal traction and braking of the road vehicle under the action of vertical supporting force.
Preferably, in some embodiments of the present invention, the connection support assembly may include a support member, a beam connection member, and a thrust rod connection member. The support member is connected with the air bag mounting seat of the vehicle body and used for vertically supporting the vehicle body. The thrust rod connecting piece is connected with the thrust rod support. The beam connecting piece is used for being matched with the thrust rod connecting piece to simulate the longitudinal loading of the bogie on the vehicle body so as to simulate the running working condition of longitudinal traction and braking of the vehicle body under the action of vertical supporting force.
Preferably, in some embodiments of the present invention, the connection support assembly may be provided on a false trolley, and is adapted to simulate the vertical support force and the longitudinal loading force to which the vehicle body is subjected under the road condition by using the false trolley. The road conditions include, but are not limited to, one or more of forward traction, backward traction, forward braking, backward braking, twist, and hill.
Optionally, in some embodiments of the invention, the impact protection device includes, but is not limited to, a creep-resistant energy absorber assembly. The one end of the connecting component can be connected with an anti-climbing energy-absorbing component of the vehicle body through bolts so as to simulate the longitudinal force applied to the vehicle body in the collision or rescue condition.
Preferably, in some embodiments of the present invention, the connection assembly includes, but is not limited to, a connection beam. The other end of the connecting beam can be connected with a hydraulic actuator, the hydraulic actuator is suitable for transversely adjusting the installation position of the hydraulic actuator, and the longitudinal tensile load and the longitudinal compressive load are loaded to the anti-collision device by the hydraulic actuator so as to simulate the longitudinal force applied to the vehicle body in the collision or rescue condition.
According to another aspect of the present invention, a method for testing the static strength of a road vehicle body is also provided herein.
The invention provides a method for testing the static strength of the vehicle body of the road vehicle, which comprises the following steps: connecting a connecting support assembly to an airbag mounting seat of a vehicle body to vertically support the vehicle body; connecting the connecting and supporting assembly to a thrust rod support of the vehicle body, and simulating the longitudinal loading of the bogie on the vehicle body by using the connecting and supporting assembly so as to simulate the operating condition of longitudinal traction and braking of the vehicle body under the action of a vertical supporting force; connecting one end of a connecting assembly to an anti-collision device arranged at the front end of the vehicle body, and loading longitudinal tensile and compressive loads on the vehicle body so as to simulate the longitudinal force applied to the vehicle body in a collision or rescue situation; and connecting a connecting base to a hinge plate provided at a rear end of the vehicle body to simulate a longitudinal force between the multi-consist vehicle modules in cooperation with the connecting assembly.
Preferably, in some embodiments of the present invention, the connection support assembly may include a support member, a beam connection member, and a thrust rod connection member. The step of vertically supporting the vehicle body may include: attaching the support member to an airbag mount of the vehicle body to vertically support the vehicle body. The step of simulating longitudinal loading of the vehicle body by the bogie may comprise: connecting the thrust rod attachment to the thrust rod mount; and simulating the longitudinal loading of the bogie to the vehicle body by utilizing the cross beam connecting piece to be matched with the thrust rod connecting piece so as to simulate the running working condition of the road vehicle for carrying out longitudinal traction and braking under the action of vertical supporting force.
Preferably, in some embodiments of the present invention, the assay method may further comprise: arranging the connecting and supporting assembly on a false trolley; and simulating the vertical supporting force and the longitudinal loading force which are applied to the vehicle body under the road working condition by using the false trolley, wherein the road working condition comprises one or more working conditions of forward traction, backward traction, forward braking, backward braking, torsion and a ramp.
Optionally, in some embodiments of the invention, the impact protection device includes, but is not limited to, a creep-resistant energy absorber assembly. The step of connecting one end of the connection assembly to the bump guard may include: bolting the one end of the connection assembly to an anti-creep energy-absorbing assembly of the vehicle body to simulate longitudinal forces experienced by the vehicle body in the collision or rescue situation.
Preferably, in some embodiments of the present invention, the connection assembly includes, but is not limited to, a connection beam. The assay method may further comprise the steps of: connecting the other end of the connecting beam to a hydraulic actuator; transversely adjusting the mounting position of the hydraulic actuator by using the connecting cross beam; and loading the longitudinal tensile and compressive loads to the anti-collision device by using the hydraulic actuator so as to simulate the longitudinal force applied to the vehicle body in a collision or rescue situation.
Optionally, in some embodiments of the invention, the assay method further comprises the steps of: and (3) carrying out modeling analysis on the vertical force and the longitudinal force acquired in the test by adopting a CAE (computer aided engineering) analysis and calculation method so as to determine the strength and the rigidity of each position of the vehicle body and find out the position with large stress strain and the weak point with small safety coefficient in the structure of the vehicle body.
Drawings
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
Figure 1 illustrates a schematic view of a virtual tram body to bogie connection provided in accordance with some embodiments of the present invention.
Installation schematic diagram of coupling assembling.
Fig. 2 illustrates an installation schematic of a connection assembly provided according to some embodiments of the present invention.
Fig. 3 illustrates a mounting schematic of a connection socket provided according to some embodiments of the present invention.
FIG. 4 illustrates an installation schematic of a connection support assembly provided according to some embodiments of the present invention.
FIG. 5 is a schematic flow chart of a road vehicle body static strength testing method provided according to another aspect of the invention.
FIG. 6 illustrates a schematic installation diagram of a road vehicle body static strength testing apparatus provided in accordance with some embodiments of the present invention.
Reference numerals:
11 an airbag mounting seat;
12, an upper thrust rod;
13 lower thrust rod;
21 an anti-creep energy-absorbing assembly;
22 connecting the cross beams;
23 a hydraulic actuator;
31 a hinged disk;
32 a connecting seat;
41 a support member;
42 a beam connector;
43 a thrust rod connection;
44 false trolley;
501-504 steps of a static strength test method for a vehicle body of a road vehicle.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in connection with the preferred embodiments, there is no intent to limit its features to those embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Additionally, the terms "upper," "lower," "left," "right," "top," "bottom," "horizontal," "vertical" and the like as used in the following description are to be understood as referring to the segment and the associated drawings in the illustrated orientation. The relative terms are used for convenience of description only and do not imply that the described apparatus should be constructed or operated in a particular orientation and therefore should not be construed as limiting the invention.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, regions, layers and/or sections, these elements, regions, layers and/or sections should not be limited by these terms, but rather are used to distinguish one element, region, layer and/or section from another element, region, layer and/or section. Thus, a first component, region, layer or section discussed below could be termed a second component, region, layer or section without departing from some embodiments of the present invention.
The vehicle body is the main body of the vehicle structure, and relates to the safety of the vehicle. As described above, the virtual railroad car is a multi-consist rubber-tyred vehicle that travels on a road surface, and the body structure thereof is designed mainly with reference to the design standards of the body of the railroad car. However, the bogie section of a virtual tram is more similar to a road passenger car due to the need to operate on urban road surfaces.
Referring to fig. 1, fig. 1 illustrates a schematic view of a virtual tram body to bogie connection provided in accordance with some embodiments of the present invention.
As shown in fig. 1, the virtual rail electric car is a multi-group rubber-tyred car that travels on a road surface, and has a car body structure that is greatly different from that of the conventional rail car. Specifically, under the normal running condition, the vertical supporting force applied to the body of the virtual rail electric car is mainly transmitted through the air bag mounting seat 11, and the longitudinal force applied to the body by the bogie in the front-rear direction is mainly transmitted through the upper thrust rod 12 and the lower thrust rod 13.
In the vehicle body static strength test process, in consideration of the above-described force-receiving characteristics of the virtual railroad car, it is necessary to apply a force, which is applied to the vehicle body by the bogie in the longitudinal direction (i.e., the front-rear direction), to the supports of the plurality of thrust rods 12, 13 of the vehicle body, and to apply a vertical (i.e., up-down direction) support force to the airbag mounting base 11. In addition, during the traction braking of the vehicle, there are also mutual longitudinal forces between the various grouping modules of the vehicle body. Therefore, the actual working condition of simulating the virtual track tramcar running on the road surface is complex, and the strength and the rigidity of the car body can be accurately determined only by designing a proper test device, and the position with larger stress strain and the weak point with smaller safety coefficient in the car body structure are searched, so that the car body structure is optimized according to the result.
In order to simulate real and complex operating conditions of a virtual rail tram, such as longitudinal tension and compression, car lifting, front-back braking and the like, a new test device needs to be developed in the field to simulate the action of force of a bogie on a car body so as to realize a static strength test of the car body.
The test device for the static strength of the road vehicle body provided by the invention can comprise a connecting assembly, a connecting seat and a connecting and supporting assembly. One end of the connecting component is connected with an anti-collision device arranged at the front end of the trolley body and used for loading longitudinal tensile and compressive loads on the trolley body of the virtual rail trolley bus so as to simulate the longitudinal force applied to the virtual rail trolley bus in the collision or rescue situation. The connecting seat is connected with a hinged disk arranged at the rear end of the vehicle body and used for being matched with the connecting assembly to simulate longitudinal force between the multi-marshalling vehicle modules. The connecting and supporting component is connected with an air bag mounting seat of the vehicle body and is used for vertically supporting the vehicle body. In addition, the connecting and supporting assembly is further connected with a bogie and a thrust rod support of the car body and used for realizing longitudinal loading of the bogie of the car body so as to simulate the running condition of longitudinal traction and braking of the virtual rail electric car under the action of vertical supporting force.
Referring to fig. 2, fig. 2 illustrates an installation diagram of a connection assembly provided according to some embodiments of the present invention.
In some embodiments of the present invention, as shown in fig. 2, the collision avoidance device disposed at the front end of the vehicle body may include a climbing prevention energy absorption assembly 21 disposed at the front end of the virtual rail vehicle. The anti-climbing energy absorption assembly 21 is an existing component of a virtual rail electric car, and is mainly used for absorbing kinetic energy of a car body to provide buffer protection for the car body and passengers in the car when the car is in a collision condition, and preventing a rear car from climbing a front car to be marshalled under the action of inertia to avoid a car turnover accident.
In some embodiments, the connecting assembly may be selected from connecting beams 22. The rear end of the connecting beam 22 can be respectively bolted with a plurality of anti-climbing energy-absorbing assemblies 21 so as to connect the front end of the virtual tram. The front end of the connecting beam 22 may be bolted to a hydraulic actuator 23. In an unfastened state, the bolt connecting mechanism of the hydraulic actuator 23 can move left and right on the connecting cross beam 22 so as to transversely adjust the installation position of the hydraulic actuator according to the actual requirement of a static strength test of the vehicle body, thereby simulating longitudinal force applied to the front end of the vehicle body at different positions and directions. In the process of the vehicle body static strength test, the hydraulic actuator 23 can provide longitudinal tensile and compressive forces to the connecting beam 22 through the fastened bolt connecting mechanism, and then the connecting beam 22 loads longitudinal tensile and compressive loads to the plurality of anti-climbing energy-absorbing assemblies 21 connected with the connecting beam to simulate the longitudinal force applied to the virtual rail electric car under the collision or rescue condition, and perform the vehicle body static strength test on the longitudinal tension and compression working condition and the vehicle erecting working condition of the virtual rail electric car.
Referring to fig. 3, fig. 3 is a schematic view illustrating an installation of a connection socket according to some embodiments of the present invention.
As shown in fig. 3, the articulated disc 31 provided at the rear end of the vehicle body is a conventional component of the virtual railroad car, and is mainly used for connecting a climbing prevention energy absorber provided at the front end of the rear car consist to pull the rear car consist of the virtual railroad car forward. In some embodiments of the present invention, the front end of the connecting base 32 may be connected to the hinge plate 31 of the rear end of the vehicle body through a bolt connection mechanism to perform tensile and compressive load loading of the rear end of the vehicle body. In an unfastened state, the bolt connecting mechanism of the connecting seat 32 can slide, so that the mounting position of the connecting seat 32 can be adjusted according to the actual requirement of a static strength test of the vehicle body, and longitudinal forces applied to different positions and directions of the rear end of the vehicle body can be simulated. During the static body strength test, the rear ends of the connecting sockets 32 may be connected to a fixture or another hydraulic device to simulate the longitudinal forces between the multi-consist vehicle modules in cooperation with the connecting cross member 22.
Referring to fig. 4, fig. 4 illustrates an installation diagram of a connection support assembly according to some embodiments of the present invention.
As shown in FIG. 4, in some embodiments of the present invention, the connection support assembly may include a support member 41, a beam connection member 42, and a thrust rod connection member 43. The support member 41 may be coupled to the airbag mounting seat 11 of the vehicle body for providing an upward supporting force to the airbag mounting seat 11 to vertically support the vehicle body. The cross beam connecting piece 42 is used for simulating longitudinal loading force applied to a car body by a bogie of the virtual tram under one or more road working conditions of forward traction, backward traction, forward braking, backward braking, torsion, a ramp and the like. One end of each of the plurality of thrust rod connecting pieces 43 is connected with the corresponding beam connecting piece 42, and the other end of each of the plurality of thrust rod connecting pieces 43 is connected with the corresponding support of the plurality of upper thrust rods 12 and the plurality of lower thrust rods 13 on the car body respectively and is used for being matched with the corresponding beam connecting piece 42 to simulate the longitudinal loading of the bogie on the car body, so that the running working condition that the virtual rail tramcar is longitudinally pulled and braked under the action of vertical supporting force is simulated.
In some embodiments, the connection support assembly may be mounted on a dummy trolley 44 for testing the static strength of the trolley body to simulate the trolley-mounting conditions of the virtual rail trolley. In the process of the vehicle body static strength test, the false trolley 44 can further simulate one or more road conditions of forward traction, backward traction, forward braking, backward braking, torsion, a ramp and the like of the virtual tramcar, so that the connecting support assembly can simulate the vertical supporting force and the longitudinal loading force of the virtual tramcar under the corresponding conditions.
According to another aspect of the invention, a method for testing the static strength of the vehicle body of the road vehicle is further provided, which is used for carrying out a vehicle body static strength test according to the characteristics of the vehicle body structure and the operation condition of the virtual track electric vehicle so as to accurately determine the strength and the rigidity of each position of the vehicle body, and further searching for a position with larger stress strain and a weak point with smaller safety coefficient in the vehicle body structure to optimize the vehicle body structure.
Referring to fig. 5 and 6 in combination, fig. 5 is a schematic flow chart of a static strength testing method for a road vehicle body provided by another aspect of the invention, and fig. 6 is a schematic installation diagram of a static strength testing device for a road vehicle body provided by some embodiments of the invention.
As shown in fig. 5, the method for testing the static strength of the vehicle body of the road vehicle provided by the invention may include the following steps 501: and connecting the connecting and supporting assembly to an air bag mounting seat of the vehicle body so as to vertically support the vehicle body.
In some embodiments of the invention, the connection support assembly may include a support 41. As shown in fig. 6, the experimenter may set the support member 41 on the false trolley 44 and provide an upward vertical support force to the trolley body through the airbag mounting seat 11 of the trolley body to simulate the trolley-erecting condition of the virtual tram. In some embodiments, a virtual tram consist may include two axles. Each axle may be provided with a false trolley 44 and a set of connecting support assemblies. The false trolley 44 can further simulate the normal driving condition of the virtual tram under one or more road conditions, such as forward traction, backward traction, forward braking, backward braking, torsion, a slope, and the like, so as to provide a corresponding vertical supporting force and a longitudinal loading force to the trolley body by using the connecting support assembly.
As shown in fig. 5, the method for testing the static strength of the body of the road vehicle provided by the invention may further include step 502: the connecting and supporting assembly is connected to a thrust rod support of the vehicle body, and the connecting and supporting assembly is used for simulating the longitudinal loading of the bogie to the vehicle body so as to simulate the running working condition of longitudinal traction and braking of the road vehicle under the action of vertical supporting force.
In some embodiments of the present invention, the connection support assembly may further include a beam connection 42 and a thrust rod connection 43. As shown in fig. 4 and 6, the beam connector 42 may be connected to the thrust rod connector 43, and the thrust rod connector 43 may be connected to the holders of the plurality of upper thrust rods 12 and the plurality of lower thrust rods 13 of the vehicle body, respectively. In the process of the vehicle body static strength test, a tester can utilize a hydraulic device to longitudinally load the cross beam connecting piece 42 so as to simulate the longitudinal force generated by the bogie when the virtual rail electric vehicle normally runs under one or more road conditions of forward traction, backward traction, forward braking, backward braking, torsion, a ramp and the like. Then, the beam connector 42 can load the longitudinal force to the supports of the upper thrust rods 12 and the lower thrust rods 13 of the car body through the connected thrust rod connectors 43, so as to simulate the longitudinal loading force of the bogie to the car body when the virtual rail electric car normally runs under one or more road conditions such as forward traction, backward traction, forward braking, backward braking, torsion and ramp.
As shown in fig. 5, the method for testing the static strength of the vehicle body of the road vehicle provided by the invention may further include step 503: one end of the connecting component is connected to an anti-collision device arranged at the front end of the vehicle body, and longitudinal tensile and compressive loads are loaded on the vehicle body so as to simulate longitudinal force applied to the vehicle body in a collision or rescue situation.
In some embodiments of the invention, the body restraint can include a creep-resistant energy absorber assembly 21 disposed at the front end of the body. The connection assembly may include a connection beam 22. As shown in fig. 2 and 6, a tester can first bolt the rear end of the connecting beam 22 to the anti-climbing energy-absorbing assembly 21 at the front end of the vehicle body, and bolt the hydraulic actuator 23 to the front end of the connecting beam 22, so as to use the hydraulic actuator 23 to simulate the longitudinal force applied to the vehicle body in the event of a collision or rescue of the virtual rail vehicle. In some embodiments, when installing the hydraulic actuator 23, the tester may also adjust the installation position of the hydraulic actuator 23 on the connecting cross beam 22 in the loose state of the bolt connecting mechanism in the transverse direction to simulate the longitudinal force applied to the front end of the vehicle body at different positions and directions.
As shown in fig. 5, the method for testing the static strength of the vehicle body of the road vehicle provided by the invention may further include step 504: the connecting base is connected to a hinge plate provided at the rear end of the vehicle body to cooperate with the connecting assembly to simulate longitudinal forces between the multi-consist vehicle modules.
In some embodiments of the present invention, the above-mentioned hinged disk 31 disposed at the rear end of the car body is an existing component of the virtual rail electric car, and is mainly used for connecting the anti-climbing energy absorption assembly disposed at the front end of the rear car group so as to pull the rear car group of the virtual rail electric car to advance. As shown in fig. 3 and 6, the tester can connect the front end of the connecting seat 32 to the hinged disk 31 at the rear end of the vehicle body through the bolt connection mechanism, and then connect the rear end of the connecting seat 32 to a fixing mechanism or another hydraulic device, so as to simulate the longitudinal force applied to the vehicle body of the vehicle in the rear vehicle marshalling when the virtual rail vehicle collides or rescues, and the like, by matching with the connecting cross beam 22, thereby simulating the longitudinal force between the vehicle modules in the multi-marshalling. In some embodiments, when installing the connecting seat 32, a tester may also adjust the installation position of the connecting seat 32 by sliding the connecting seat 32 in a state that the bolt connection mechanism is not fastened, so as to simulate longitudinal forces applied to different positions and directions of the rear end of the vehicle body.
In some embodiments of the present invention, after the tester obtains the vertical supporting force and the longitudinal loading force of the vehicle body under each working condition by using the testing apparatus, the tester may analyze and calculate the strength and the rigidity of each position of the vehicle body by using Computer Aided Engineering (CAE), and search for a position with a large stress strain and a weak point with a small safety coefficient in the vehicle body structure, thereby optimizing the vehicle body structure according to the calculation result. By adopting the test method of stress simulation and simulation calculation, the invention can quickly and efficiently carry out the static strength test of the vehicle body of the road vehicle with various types, thereby meeting the requirements of product research and development and market diversification popularization.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one skilled in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The utility model provides a test device of quiet intensity of road vehicle automobile body which characterized in that includes:
the connecting assembly is connected with the anti-collision device arranged at the front end of the vehicle body at one end and used for loading longitudinal tensile and compressive loads on the vehicle body so as to simulate the longitudinal force applied to the vehicle body under the collision or rescue condition;
the connecting seat is connected with the hinged disc arranged at the rear end of the vehicle body and is used for matching with the connecting assembly to simulate the longitudinal force between the multi-grouped vehicle modules; and
the connecting and supporting assembly is connected with the air bag mounting seat of the vehicle body and used for vertically supporting the vehicle body, and the connecting and supporting assembly is further connected with a thrust rod support of the vehicle body and used for simulating the longitudinal loading of the vehicle body by a bogie so as to simulate the running working condition of longitudinal traction and braking of the road vehicle under the action of vertical supporting force.
2. The test device of claim 1, wherein the connection support assembly comprises:
the support piece is connected with the air bag mounting seat of the vehicle body and is used for vertically supporting the vehicle body;
the thrust rod connecting piece is connected with the thrust rod support; and
and the beam connecting piece is used for matching with the thrust rod connecting piece to simulate the longitudinal loading of the bogie on the vehicle body so as to simulate the running working condition of longitudinal traction and braking of the road vehicle under the action of vertical supporting force.
3. The test device according to claim 2, wherein the connection support assembly is provided on a false trolley and is adapted to simulate the vertical supporting force and the longitudinal loading force to which the vehicle body is subjected under a road condition by the false trolley, wherein the road condition includes one or more of forward traction, backward traction, forward braking, backward braking, torsion and a ramp.
4. The test apparatus as claimed in claim 1, wherein the anti-collision device comprises an anti-creep energy-absorbing assembly, the one end of the connecting assembly being bolted to the anti-creep energy-absorbing assembly to simulate longitudinal forces experienced by the vehicle body in the collision or rescue situation.
5. The test device as claimed in claim 4, wherein the connecting assembly comprises a connecting beam, the other end of the connecting beam is connected with a hydraulic actuator, the hydraulic actuator is suitable for transversely adjusting the installation position of the hydraulic actuator, and the longitudinal tensile and compressive loads are loaded to the anti-collision device by the hydraulic actuator so as to simulate the longitudinal force applied to the vehicle body in a collision or rescue situation.
6. A test method for static strength of a road vehicle body is characterized by comprising the following steps:
connecting a connecting support assembly to an airbag mounting seat of a vehicle body to vertically support the vehicle body;
connecting the connecting and supporting assembly to a thrust rod support of the vehicle body, and simulating longitudinal loading of the bogie on the vehicle body by using the connecting and supporting assembly so as to simulate the running condition of longitudinal traction and braking of the road vehicle under the action of vertical supporting force;
connecting one end of a connecting assembly to an anti-collision device arranged at the front end of the vehicle body, and loading longitudinal tensile and compressive loads on the vehicle body so as to simulate the longitudinal force applied to the vehicle body in a collision or rescue situation; and
connecting a connecting base to a hinged plate provided at the rear end of the vehicle body to cooperate with the connecting assembly to simulate longitudinal forces between multi-consist vehicle modules.
7. The test method of claim 6, wherein the connecting support assembly comprises a support member, a beam connection member and a thrust bar connection member, and the step of vertically supporting the vehicle body comprises:
attaching the support member to an airbag mount of the vehicle body to vertically support the vehicle body;
the step of simulating longitudinal loading of the vehicle body by the bogie comprises:
connecting the thrust rod attachment to the thrust rod mount; and
and the transverse beam connecting piece is matched with the thrust rod connecting piece to simulate the longitudinal loading of the bogie on the vehicle body so as to simulate the running working condition of the road vehicle for longitudinal traction and braking under the action of vertical supporting force.
8. The assay method of claim 7, further comprising:
arranging the connecting and supporting assembly on a false trolley; and
and simulating the vertical supporting force and the longitudinal loading force which are applied to the vehicle body under the road working condition by using the false trolley, wherein the road working condition comprises one or more working conditions of forward traction, backward traction, forward braking, backward braking, torsion and a ramp.
9. The test method of claim 6, wherein the bump guard includes a creep-resistant energy-absorbing assembly, and the step of connecting one end of the connecting assembly to the bump guard includes:
bolting the one end of the connection assembly to an anti-creep energy-absorbing assembly of the vehicle body to simulate longitudinal forces experienced by the vehicle body in the collision or rescue situation.
10. The test method of claim 9, wherein the connection assembly includes a connection beam, the test method further comprising:
connecting the other end of the connecting beam to a hydraulic actuator;
transversely adjusting the mounting position of the hydraulic actuator by using the connecting cross beam; and
and loading the longitudinal tensile and compressive loads to the anti-collision device by using the hydraulic actuator so as to simulate the longitudinal force applied to the vehicle body in a collision or rescue situation.
11. The assay method of claim 6, further comprising:
and (3) carrying out modeling analysis on the vertical force and the longitudinal force acquired in the test by adopting a CAE (computer aided engineering) analysis and calculation method so as to determine the strength and the rigidity of each position of the vehicle body and find out the position with large stress strain and the weak point with small safety coefficient in the structure of the vehicle body.
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| CN202011300755.5A CN112611570A (en) | 2020-11-19 | 2020-11-19 | Device and method for testing static strength of road vehicle body |
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| CN202011300755.5A CN112611570A (en) | 2020-11-19 | 2020-11-19 | Device and method for testing static strength of road vehicle body |
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Application publication date: 20210406 |