CN111661173B - Method for optimizing safety performance of vehicle and cab frame structure - Google Patents
Method for optimizing safety performance of vehicle and cab frame structure Download PDFInfo
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- CN111661173B CN111661173B CN202010574205.6A CN202010574205A CN111661173B CN 111661173 B CN111661173 B CN 111661173B CN 202010574205 A CN202010574205 A CN 202010574205A CN 111661173 B CN111661173 B CN 111661173B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/007—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of special steel or specially treated steel, e.g. stainless steel or locally surface hardened steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/04—Door pillars ; windshield pillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
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Abstract
The invention provides a method for optimizing the safety performance of a vehicle and a cab frame structure. Relates to the technical field of safety of a cab of a vehicle. The optimization method comprises the following steps: the strength of the frame structure of the cab of the vehicle is enhanced through structural adjustment and/or increase and decrease of parts, and the energy absorption capacity of the frame structure is enhanced through manufacturing part of parts in the frame structure by adopting energy absorption materials, so that the collision force applied to the cab of the vehicle in the collision process is reduced. The optimization method provided by the invention can ensure the life safety of passengers in the cab during collision.
Description
Technical Field
The present invention relates to the field of cab safety for vehicles, and more particularly, to a method for optimizing safety performance for a vehicle and a cab frame structure.
Background
Legislation has increased demands on crash performance of light truck cabs and increased demands on occupant protection in light truck cabs. However, because the tonnage of the light truck is small, the space and the structure of the cab are limited, and the cab of the light truck generally cannot provide sufficient protection for passengers like a heavy truck. Especially, the light truck with the weight of more than 7.5 tons has the similar performance of resisting collision to a small-tonnage truck, the loaded goods are looked at the middle-heavy trucks, and in the cab of the truck, once collision occurs, especially when the collision position occurs at the position of the A column, the cab structure is collapsed and topples over towards the rear of the truck, the space of the head, the trunk, the legs and the like of a passenger is limited, and the life safety of the passenger cannot be ensured.
In the prior art, the technical scheme for optimizing the collision performance of the light truck cab refers to the cab of a medium-heavy truck and the cab of a heavy truck, and the cab frame is enhanced. For example, a reinforcement for transmitting impact force is added to the rear wall and the floor of the cab of the truck, and deformation of the cab due to impact can be reduced by transmitting the impact force from the cab to the frame more smoothly. On the other hand, the structure of the light truck cab is simpler than that of a medium-weight truck and a heavy truck, so that the collision force is difficult to be effectively and uniformly transmitted to the frame, and the suspension system connecting the cab and the frame is easy to lose efficacy in the process of transmitting the collision force from the cab to the frame, so that greater safety risk is brought, and the mode does not fundamentally solve the potential safety hazard of collision to passengers in the light truck cab.
Disclosure of Invention
It is an object of a first aspect of the present invention to provide a method of optimizing vehicle safety performance that can ensure the life safety of occupants in a cab at the time of a collision.
It is a further object of the first aspect of the invention to provide a method of optimizing the safety performance of a vehicle capable of absorbing impact forces.
It is an object of the second aspect of the present invention to provide a cab frame structure capable of securing the life safety of an occupant in a cab at the time of a collision.
According to the first aspect described above, the present invention provides a method for optimizing safety performance of a vehicle, comprising:
the strength of the frame structure of the cab of the vehicle is enhanced through structural adjustment and/or increase and decrease of parts, and the energy absorption capacity of the frame structure is enhanced through manufacturing part of parts in the frame structure by adopting energy absorption materials, so that the collision force applied to the cab of the vehicle in the collision process is reduced.
Optionally, the enhancing the strength of the frame structure of the cab of the vehicle by structural adjustment and/or addition or subtraction of parts comprises:
and the structural strength of a side wall frame, a floor rear cross beam, a rear wall reinforcing plate, a floor longitudinal beam and a floor reinforcing cross beam which are connected with the vehicle door in the frame structure is enhanced.
Optionally, the enhancing the energy absorption capability of the frame structure by making part of the components in the frame structure of energy absorption material includes:
and manufacturing the A column of the vehicle by adopting an energy-absorbing material.
Optionally, the rear wall reinforcing plate includes two cross beams extending along the transverse direction of the vehicle and arranged along the vertical direction of the vehicle and two vertical beams extending along the vertical direction of the vehicle and arranged along the transverse direction of the vehicle, and the two cross beams and each vertical beam are arranged in a crossing manner.
Optionally, the floor reinforcing cross beam is connected between the floor longitudinal beam and one of the side frame members arranged at the bottom of the vehicle, and the floor reinforcing cross beam is arranged at one side close to the head of the vehicle.
According to the second aspect described above, the present invention also provides a cab frame structure for a vehicle, comprising:
a side frame connected to a door of the vehicle;
a column A;
the rear floor cross beam is arranged between the two opposite side frame frames and arranged along the transverse direction of the vehicle;
a rear wall reinforcing plate connected to a rear wall of the cab;
the floor longitudinal beam is arranged between the two opposite side frame frames and arranged along the longitudinal direction of the vehicle;
and the floor reinforcing cross beam is connected between the floor longitudinal beam and the side wall frame.
Optionally, the a-pillar is made of an energy-absorbing material.
Optionally, the rear wall reinforcing plate includes two cross beams extending along the transverse direction of the vehicle and arranged along the vertical direction of the vehicle and two vertical beams extending along the vertical direction of the vehicle and arranged along the transverse direction of the vehicle, and the two cross beams and each vertical beam are arranged in a crossing manner.
Optionally, the structures of the side frame, the rear floor cross beam, the rear floor reinforcing plate, the floor longitudinal beam and the floor reinforcing cross beam are all reinforced by structural adjustment and/or material adjustment and/or increase and decrease of parts.
Optionally, the side frame comprises four joints and a first portion, a second portion, a third portion and a fourth portion disposed between two joints.
The optimization method provided by the invention adopts the steps of increasing the strength of the frame structure and enhancing the anti-collision capacity of the vehicle cab by the aid of the energy absorption capacity of part of parts. Compared with the scheme of transmitting the collision force during collision to the rear side of the vehicle in the prior art, the collision force is weakened through the energy-absorbing material on one hand, and the weak position is reinforced on the other hand, so that the safety performance of the cab of the vehicle is improved, the rear side of the vehicle is not threatened, and the life safety of passengers in the cab is ensured.
Further, adjusting the strength distribution of the frame structure of the cab comprises: the side wall frame, the floor rear cross beam, the rear wall reinforcing plate, the floor longitudinal beam and the floor reinforcing cross beam which are connected with the vehicle door in the reinforcing frame structure and the A column are made of energy-absorbing materials. The inventors have found that the joint area in the cab is weak and the safety of the occupants after a collision cannot be guaranteed. Therefore, make full use of the sufficient characteristic in passenger's head position space in the driver's cabin, set up the A post into the energy-absorbing district, utilize the deformation of A post to absorb the impact under the prerequisite that the A post is not cracked or does not influence passenger's head living space, and reasonable reinforcing side wall frame, floor rear frame member, back wall reinforcing plate, floor longeron and floor stiffening beam, guarantee that side wall frame, floor rear frame member, back wall reinforcing plate, the deformation that floor longeron and floor stiffening beam produced because of the impact is controllable, thereby passenger's whole living space increases by a wide margin after the collision. Compare with the simple mode that increases material thickness or structure and pile up of prior art, the scheme of this embodiment has not only reduced whole car weight, the preparation and use cost have been reduced, and through setting up the A post into the regional mode of energy-absorbing very big the solution of collision power, the harm that the in-process of avoiding the collision power to the frame transmission caused, the scheme that this embodiment provided more further only needs to carry out the small amplitude reinforcing on the processing of side wall frame, floor rear frame member, back wall reinforcing plate, floor longeron and floor stiffening beam can reach the effect of resisting the collision power that can reach by a wide margin the enhancement among the prior art.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a block flow diagram of a method for optimizing safety performance of a vehicle according to one embodiment of the present invention;
fig. 2 is a schematic structural view of a cab frame structure for a vehicle according to an embodiment of the invention;
fig. 3 is a structural schematic view of a cab frame structure for a vehicle according to another embodiment of the invention;
fig. 4 is a schematic view of a partial structure of a cab frame structure for a vehicle according to another embodiment of the invention;
fig. 5 is a schematic view of another angular partial structure of a cab frame structure for a vehicle according to another embodiment of the present invention.
Detailed Description
The present invention provides a method for optimizing the safety performance of a vehicle, generally comprising the steps of:
the strength of the frame structure of the cab of the vehicle is enhanced by adjusting the structure and/or increasing or decreasing parts, and the energy absorption capacity of the frame structure is enhanced by manufacturing part of parts in the frame structure by adopting energy absorption materials, so that the collision force applied to the cab of the vehicle in the collision process is reduced.
It is specifically noted that structural modifications and/or additions and/or deletions include, but are not limited to, one or a combination of structural modifications and additions and/or deletions. The structure adjustment comprises adjustment in various aspects such as structure position, connection mode, structure size and the like, the material adjustment comprises adjustment in various aspects such as material thickness and material type, and the increase and decrease of parts comprise adjustment in various aspects such as removal of unnecessary parts, addition of reinforcing plates or reinforcing ribs and the like.
In this embodiment, the impact resistance of the vehicle cab is enhanced by increasing the strength of the frame structure and the energy absorption capability of some of the components. Compared with the scheme of transmitting the collision force during collision to the rear side of the vehicle in the prior art, the collision force is weakened through the energy-absorbing material on one hand, and the weak position is reinforced on the other hand, so that the safety performance of the cab of the vehicle is improved, the rear side of the vehicle is not threatened, and the life safety of passengers in the cab is ensured.
Fig. 1 is a block flow diagram of an optimization method for safety performance of a vehicle according to one embodiment of the present invention. In actual practice, as shown in fig. 1, the safety weak position of the cab is identified and the optimization scheme is verified by the following method:
s10: identifying safe weak positions of a cab of a vehicle according to deformation of the cab during collision;
s20: analyzing the structural defects of the cab according to the safe weak position;
s30: formulating an optimization scheme of the strength distribution of the frame structure of the cab according to the structural defects;
s40: adjusting the intensity distribution of the frame structure of the cab according to the optimization scheme;
s50: verifying the strength distribution of the frame structure of the cab;
s60: judging whether the strength distribution of a frame structure of a cab meets a preset requirement or not;
s70: and if the strength distribution of the frame structure of the cab cannot meet the preset requirement, reformulating an optimization scheme according to the structural defects.
It should be noted that, according to the preset requirements, the following are included: according to the safety requirements regulated by laws and regulations at home and abroad, the requirements for actually ensuring the life safety of passengers and the like.
The optimization method provided by this embodiment is to perform a collision test on the cab, where the collision test may be performed by a real vehicle or by computer simulation, the test is performed to simulate a collision position and a collision force according to an actual driving process, then a plurality of weak positions may exist in the cab are identified according to deformation caused after the test, the weak positions affecting safety of passengers in the cab can be preferably analyzed, a structural defect of the cab is found according to the weak positions, a weak point of strength distribution of the cab is found according to the structural defect, an optimization scheme of the strength distribution of the cab is formulated, then the strength distribution of the cab is adjusted according to the optimization scheme, and after the adjustment, the collision test is performed to verify the optimization scheme to determine whether the optimized cab can meet requirements for ensuring safety of the passengers, and if so, and if the optimization scheme is not met, adjusting or re-formulating the optimization scheme according to the steps until the cab can meet the requirement for ensuring the safety of the passengers. The scheme provided by the embodiment optimizes the cab, so that the life safety of passengers in the cab can be guaranteed when the vehicle collides, and the safety performance of the vehicle is improved.
Preferably, in one embodiment, the safe weak point of the cab is identified according to the deformation of the cab of the vehicle in the collision, and the collision process of the vehicle is simulated by the computer and the safe weak point is identified. Specifically, the information such as the structure, the collision force, the collision position and the like of the cab is input into the computer, and the computer is used for carrying out the simulation test, so that the cost is saved and the test difficulty is reduced compared with the mode of carrying out the simulation test by adopting a real vehicle.
Adjusting the intensity distribution of the cab according to the optimization scheme includes adjusting the intensity distribution of the frame structure of the cab according to the optimization scheme. The frame structure of the cab in the prior art can cause insufficient space of legs and abdomen of passengers after a vehicle is collided, the space of an upper body and a head is sufficient, and the life safety of the passengers after the collision is threatened by the frame structure, so that the arrangement mode of the frame structure is unreasonable. The frame structure can be optimized according to actual safety requirements through an optimization scheme so as to meet the requirements of protecting passengers, for example, in a preferred embodiment, the space of the upper body and the head can be used for replacing the space of the leg and the abdomen, and the protection of the passengers when the vehicle collides can be more reasonably and effectively ensured.
In other embodiments, the purpose of adjusting the strength distribution of the cab can be achieved by adjusting the spatial distribution of the cab, and certainly, the spatial distribution and the frame structure can be adjusted in a coordinated manner, so that the cab meets the requirements of users in various aspects, such as cost, safety, comfort, NVH, and the like.
In a further embodiment, adjusting the strength distribution of the frame structure of the cab comprises: the side frame connected with the door of the vehicle in the reinforced frame structure, the floor rear cross beam 311, the rear wall reinforcing plate 411, the floor longitudinal beam 211 and the floor reinforcing cross beam 511. Increasing the energy absorbing capacity of the safety weaknesses includes using energy absorbing material to form the a-pillar 131. Through the simulation test of the above embodiment, the inventors found that the joint area in the cab is weak and the safety of the occupant cannot be ensured after the collision. Therefore, in this embodiment, the characteristic that the head space of the passenger in the cab is sufficient is fully utilized, the a-pillar 131 is set as an energy absorption area, the impact force is absorbed by the deformation of the a-pillar 131 on the premise that the a-pillar 131 is not broken or the head living space of the passenger is not affected, and the side frame, the floor rear cross beam 311, the rear wall reinforcing plate 411, the floor longitudinal beam 211 and the floor reinforcing cross beam 511 are reasonably reinforced, so that the deformation of the side frame, the floor rear cross beam 311, the rear wall reinforcing plate 411, the floor longitudinal beam 211 and the floor reinforcing cross beam 511 due to the impact force is controllable, and the whole living space of the passenger after the collision is greatly increased. Compare with the simple mode that increases material thickness or structure and pile up of prior art, the scheme of this embodiment has not only reduced whole car weight, has reduced preparation and use cost, and through setting up A post 131 to the regional mode of energy-absorbing very big settlement impact, avoid the harm that the in-process of impact to the frame transmission caused, the scheme that more furtherly this embodiment provided only needs to carry out the small amplitude reinforcing on side wall frame, floor rear frame member 311, enclose reinforcing plate 411 after, floor longeron 211 and floor stiffening beam 511's the processing can reach the effect of resisting the impact that can reach among the prior art by a wide margin the reinforcement.
Compared with the technical scheme of only limiting the cab in the prior art, the invention comprehensively considers the reaction of collision on the cab, the suspension connecting the cab and the frame and the cab under the collision, and verifies that the influence caused by the collision can be eliminated in a smaller system range through computer simulation.
Preferably, since the impact occurs in the area of the a-pillar 131, the strength of the a-pillar 131 can be gradually weakened relative to other areas during the test, and the energy absorption ratio thereof can be improved, so that the a-pillar 131 becomes a main deformation area. Specifically, the energy-absorbing material for manufacturing the a-pillar 131 may be selected from a material having lower strength but higher elongation than the non-energy-absorbing region, such as a steel material or an aluminum alloy having a relatively higher elongation.
In a preferred embodiment, the reinforcement plate provided at the joint to which the a-pillar 131 is connected is also eliminated by the above-described test.
In a further embodiment, the manner of reinforcing the side frame, the floor rear cross member 311, the rear reinforcement panel 411, the floor side member 211 and the floor reinforcement cross member 511 connected to the door of the vehicle in the frame structure includes: replacing the high-strength steel plate and/or increasing the thickness of the original steel plate and/or adding a reinforcing plate. The inventor carries out a computer simulation crash test on the scheme of the embodiment, and the test shows that after the crash, the deformation area of the cab is transferred to the A column 131 from the joint, and the A column 131 is not broken, so that the crash force is absorbed, and the living space of the passenger in the cab is obviously improved. According to the optimization scheme, the mode of transferring the collision force in the prior art is changed into the mode of absorbing the collision force, the collision risk is not transferred to other systems of the vehicle, the safety risk of the cab after collision is fundamentally solved, and the protection effect of the cab on passengers in the prior art when collision occurs can be obviously improved. After the comparison of the simulation analysis of the computer, the invention also finds that the weight of the cab is lower under the condition of passenger protection or the cab has better passenger protection effect under the same weight by the scheme of reasonably arranging the strong and weak areas of the cab again, so that the manufacturing cost of the cab can be reduced, the use cost of a user is reduced, the practicability is high, and the economic benefit potential is huge.
In one embodiment, taking an a-pillar 131 collision test of a commercial vehicle as an example, a computer simulates the collision a-pillar 131, and finds that the living space of a passenger is seriously insufficient, such as a cab roof and a front wall can collide the head of the passenger, a steering wheel can collide the abdomen of the passenger, an instrument panel can press the legs of the passenger, and each joint of the cab is subjected to plastic deformation after collision.
In a preferred embodiment, the rear wall stiffener 411 includes two cross beams extending in the transverse direction of the vehicle and arranged in the vertical direction of the vehicle, and two vertical beams extending in the vertical direction of the vehicle and arranged in the transverse direction of the vehicle, and the two cross beams and each vertical beam are arranged in a crossing manner. Preferably, each cross beam is perpendicular to each vertical beam, so that the back wall reinforcing plate 411 is in an open shape, thereby further increasing the strength of the back wall.
In a more preferred embodiment, the floor reinforcing cross member 511 is connected between the floor side member 211 and one of the side frames provided at the bottom of the vehicle, and the floor reinforcing cross member 511 is provided on a side near the head of the vehicle. The inventor finds that the floor side rail 211 and the side wall frame close to the vehicle head have larger space, the assembly of the floor reinforcing cross beam 511 is more facilitated, and the strength is higher after the assembly.
Fig. 2 is a schematic structural view of a cab frame structure for a vehicle according to an embodiment of the present invention. As shown in fig. 2, the present invention also provides a cab frame structure for a vehicle, which is manufactured by adopting the optimized solution provided by any one of the above embodiments, and generally comprises side frame, a pillar 131, a floor rear cross member 311, a rear wall reinforcing plate 411, a floor longitudinal member 211 and a floor reinforcing cross member 511. The side wall frames are connected with the vehicle doors, the number of the side wall frames is the same as that of the vehicle doors, and if two vehicle doors are arranged on a certain vehicle, the number of the side wall frames is two. Preferably, the side frame further includes an outer panel disposed outside the vehicle and an inner panel disposed inside the vehicle, that is, on a side close to the occupant. The floor rear cross member 311 and the rear wall gusset 411 are provided between the opposing two side wall frames and arranged in the lateral direction of the vehicle. The floor side member 211 is provided between the two opposing side frames and arranged in the longitudinal direction of the vehicle. The floor reinforcement cross member 511 is provided between the floor side member 211 and the side frame and arranged in the lateral direction of the vehicle.
In a preferred embodiment, the A-pillar 131 is made of an energy absorbing material.
In a specific embodiment, the rear wall stiffener 411 includes two cross beams extending along the transverse direction of the vehicle and arranged along the vertical direction of the vehicle, and two vertical beams extending along the vertical direction of the vehicle and arranged along the transverse direction of the vehicle, and the two cross beams and each vertical beam are arranged in a crossing manner. Preferably, each cross beam is perpendicular to each vertical beam, so that the back wall reinforcing plate 411 is in an open shape, thereby further increasing the strength of the back wall.
In a preferred embodiment, the structures of the side frame, the floor rear cross member 311, the rear wall reinforcing plate 411, the floor longitudinal members 211 and the floor reinforcing cross member 511 are all reinforced by structural adjustment and/or material adjustment and/or addition and subtraction of parts. The inventors have found that the joint area in the cab is weak and the safety of the occupants after a collision cannot be guaranteed. Therefore, in this embodiment, the characteristic that the head space of the passenger in the cab is sufficient is fully utilized, the a-pillar 131 is set as an energy absorption area, the impact force is absorbed by the deformation of the a-pillar 131 on the premise that the a-pillar 131 is not broken or the head living space of the passenger is not affected, and the side frame, the floor rear cross beam 311, the rear wall reinforcing plate 411, the floor longitudinal beam 211 and the floor reinforcing cross beam 511 are reasonably reinforced, so that the deformation of the side frame, the floor rear cross beam 311, the rear wall reinforcing plate 411, the floor longitudinal beam 211 and the floor reinforcing cross beam 511 due to the impact force is controllable, and the whole living space of the passenger after the collision is greatly increased. Compare with the simple mode that increases material thickness or structure and pile up of prior art, the scheme of this embodiment has not only reduced whole car weight, has reduced preparation and use cost, and through setting up A post 131 to the regional mode of energy-absorbing very big settlement impact, avoid the harm that the in-process of impact to the frame transmission caused, the scheme that more furtherly this embodiment provided only needs to carry out the small amplitude reinforcing on side wall frame, floor rear frame member 311, enclose reinforcing plate 411 after, floor longeron 211 and floor stiffening beam 511's the processing can reach the effect of resisting the impact that can reach among the prior art by a wide margin the reinforcement.
Fig. 3 is a structural schematic view of a cab frame structure for a vehicle according to another embodiment of the invention. Fig. 4 is a schematic view of a partial structure of a cab frame structure for a vehicle according to another embodiment of the invention. Fig. 5 is a schematic view of another angular partial structure of a cab frame structure for a vehicle according to another embodiment of the present invention. In a specific embodiment, the side frame includes a plurality of joints (first joint 111, second joint 112, third joint 113, and fourth joint 114) and a first portion 121, a second portion 122, a third portion 123, and a fourth portion 124 disposed between the joints. Preferably, the first portion 121 is disposed between the first joint 111 and the second joint 112, the second portion 122 is disposed between the first joint 111 and the third joint 113, the third portion 123 is disposed between the third joint 113 and the fourth joint 114, and the fourth portion 124 is disposed between the second joint 112 and the fourth joint 114. Wherein, the first joint 111, the fourth joint 114, the second part 122, the third part 123, the rear wall reinforcing plate 411 and the floor reinforcing beam 511 are all provided with reinforcing plates. Further, the material strength of the first section 121, the fourth section 124, the floor rear cross member 311, and the floor longitudinal members 211 is improved. After the strength at the plurality of joints is increased, deformation at the joints after the vehicle collision can be prevented from being transferred to the side frame by increasing the material strength of the first and fourth portions 121 and 124 and adding the reinforcement plates at the second and third portions 122 and 123. By improving the material strength of the floor rear cross member 311 and providing a reinforcing plate at the rear wall reinforcing plate 411, it is possible to prevent deformation at the joint from being transferred to the rear wall after collision. By raising the material strength of the floor side member 211 and providing a reinforcing plate at the floor reinforcing cross member 511, it is possible to prevent the deformation at the joint from being transferred to the floor after the collision. Therefore, the overall strength of the cab is improved.
In a preferred embodiment, there are a plurality of floor stringers, each extending in the longitudinal direction of the vehicle, preferably two.
The above embodiments only show the optimized solution and the cab frame structure of the a-pillar area where the collision occurs, but in other embodiments, the optimized solution can also be applied to other areas where the collision occurs, and the collision safety performance can also be optimized by adding additional buffering and energy absorbing part structures or devices in the collision area or replacing the raw materials with energy absorbing materials, and forming the corresponding structures.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. A method for optimizing safety performance of a vehicle, comprising:
the strength of a frame structure of a cab of the vehicle is enhanced through structural adjustment and/or increase and decrease of parts, and the energy absorption capacity of the frame structure is enhanced through manufacturing part of parts in the frame structure by adopting energy absorption materials, so that the collision force applied to the cab of the vehicle in the collision process is reduced;
enhancing the strength of the frame structure of the cab of the vehicle by structural adjustment and/or addition or subtraction of parts includes:
the structural strength of a side wall frame, a floor rear cross beam (311), a rear wall reinforcing plate (411), a floor longitudinal beam (211) and a floor reinforcing cross beam (511) which are connected with the vehicle door in the frame structure is enhanced;
the energy-absorbing structure is characterized in that the A column (131) of the vehicle is made of energy-absorbing materials, a reinforcing plate at a joint connected with the A column (131) is omitted, the material of the A column (131) is lower in strength and higher in elongation than the material of other areas, and the A column (131) is located on the upper portion of a front upright of the frame structure.
2. The optimization method according to claim 1, wherein the rear wall gusset (411) comprises two cross beams extending in the transverse direction of the vehicle and arranged in the vertical direction of the vehicle and two vertical beams extending in the vertical direction of the vehicle and arranged in the transverse direction of the vehicle, and the two cross beams are arranged across each of the vertical beams.
3. The optimization method according to claim 1 or 2, characterized in that the floor reinforcement cross member (511) is connected between the floor side member (211) and one of the side frame members provided at the bottom of the vehicle, and the floor reinforcement cross member (511) is provided at a side near the head of the vehicle.
4. A cab frame structure manufactured by the optimization method according to any one of claims 1 to 3, comprising:
a side frame connected to a door of the vehicle;
an A column (131);
a floor rear cross member (311) disposed between the two opposing side frame members and arranged in the lateral direction of the vehicle;
a rear wall reinforcement plate (411) connected to a rear wall of the cab;
a floor side member (211) disposed between the two opposing side frame members and arranged in the longitudinal direction of the vehicle;
a floor reinforcing cross beam (511) connected between the floor longitudinal beam (211) and the side frame;
the A column (131) is made of energy-absorbing materials, a joint connected with the A column (131) is not provided with a reinforcing plate, the material of the A column (131) is lower in strength and higher in elongation compared with the material of other areas, and the A column (131) is located on the upper portion of a front upright of the frame structure.
5. The cab frame structure according to claim 4, wherein the rear wall gusset (411) includes two cross members extending in the lateral direction of the vehicle and arranged in the vertical direction of the vehicle and two vertical beams extending in the vertical direction of the vehicle and arranged in the lateral direction of the vehicle, and the two cross members are arranged across each of the vertical beams.
6. The cab frame structure according to claim 5, wherein the structures of the side frame, the floor rear cross member (311), the rear wall reinforcement plate (411), the floor side member (211), and the floor reinforcement cross member (511) are all reinforced by structural adjustment and/or material adjustment and/or addition and/or subtraction of parts.
7. The cab frame structure according to claim 6, wherein the side frame includes four joints and a first portion (121), a second portion (122), a third portion (123), and a fourth portion (124) disposed between two joints.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010574205.6A CN111661173B (en) | 2020-06-22 | 2020-06-22 | Method for optimizing safety performance of vehicle and cab frame structure |
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| CN202010574205.6A CN111661173B (en) | 2020-06-22 | 2020-06-22 | Method for optimizing safety performance of vehicle and cab frame structure |
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| CN111661173B true CN111661173B (en) | 2021-10-15 |
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| CN112678078A (en) * | 2020-12-30 | 2021-04-20 | 浙江吉利控股集团有限公司 | Vehicle structure optimization method, vehicle structure and vehicle |
| CN112829839B (en) * | 2021-03-15 | 2022-07-22 | 东风汽车股份有限公司 | Light truck cab and optimization method thereof |
| CN115168989A (en) * | 2022-06-29 | 2022-10-11 | 江苏徐工工程机械研究院有限公司 | ROPS framework top beam optimization design method and engineering machinery cab |
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| CN203544136U (en) * | 2013-10-30 | 2014-04-16 | 安徽江淮汽车股份有限公司 | Body-in-white structure of light truck |
| CN203623797U (en) * | 2013-12-18 | 2014-06-04 | 阿尔特汽车技术股份有限公司 | Car cab rear wall reinforcing structure |
| CN203958322U (en) * | 2014-05-30 | 2014-11-26 | 东风商用车有限公司 | White body frame construction of truck |
| CN204161496U (en) * | 2014-10-09 | 2015-02-18 | 北汽福田汽车股份有限公司 | Operator's compartment and vehicle |
| CN204368297U (en) * | 2014-12-30 | 2015-06-03 | 中联重科股份有限公司 | Engineering machinery cab main body framework, cab and engineering machinery |
| CN205916215U (en) * | 2016-07-05 | 2017-02-01 | 中国重汽集团济南动力有限公司 | Driver's cabin body for fire engine |
| CN206513667U (en) * | 2017-02-24 | 2017-09-22 | 浙江春风动力股份有限公司 | Push up level joint, top thick stick and vehicle |
| CN210133188U (en) * | 2019-06-24 | 2020-03-10 | 一汽解放汽车有限公司 | White automobile body and medium-sized commercial vehicle |
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