CN211442226U - Light truck partition plate device - Google Patents
Light truck partition plate device Download PDFInfo
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- CN211442226U CN211442226U CN201920839001.3U CN201920839001U CN211442226U CN 211442226 U CN211442226 U CN 211442226U CN 201920839001 U CN201920839001 U CN 201920839001U CN 211442226 U CN211442226 U CN 211442226U
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- partition plate
- lower main
- main partition
- reinforcing ribs
- assembly
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Abstract
The utility model discloses a light truck baffle device and design method based on finite element technique. The baffle device consists of a baffle assembly and a reinforcing beam shaped like a Chinese character 'ji', and the optimized baffle device has the advantages of simple structure, good safety performance, light weight and low cost. The partition plate assembly and the cross beam are divided into two parts, so that stamping forming is facilitated, manufacturing manufacturability is good, two sides of the partition plate are connected through rivets, and the partition plate is firm and durable. On the premise of meeting the performance requirements, the method optimizes the parameters of the material and the thickness of the partition plate, the shape and the position of the reinforcing ribs, the diameter of the fasteners, the number of the fasteners and the like until the total weight of the part is minimum and the total cost of the part is controlled to be less than or equal to the target cost. The utility model discloses reduce the design risk, improved product quality, reduced experimental number of times and test cost, realized performance maximize, design lightweight, cost optimization simultaneously.
Description
The technical field is as follows:
the utility model belongs to vehicle parts auxiliary design field, in particular to light truck baffle device.
Background art:
at present ordinary van, especially lightweight van, driver's cabin and back warehouse are the integrative structure of intercommunication, in order to guarantee the safety of driver and goods, more and more consumers require to set up the baffle between driver's area and the goods district, a lot of baffles are flat structure at present, and most are the later stage repacking, it is simply exactly to weld a sheet steel in the suitable position between carriage and driver's cabin to say, but this kind of later stage repacking has more problems, for example, the baffle rigidity is not enough, can appear obvious shake, abnormal sound, interior roaring of car in the driving process. Meanwhile, under the working conditions of sharp turning, emergency braking, collision, obstacle crossing and the like of the vehicle, the welding is not firm or the shape of the baffle is not fit, so that goods can possibly cross a driving area and cause damage to a driver and passengers.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
The utility model has the following contents:
an object of the utility model is to provide a light truck baffle device to overcome the defect among the above-mentioned prior art.
In order to achieve the purpose, the utility model provides a light truck baffle device, which consists of a baffle assembly and a reinforcing beam with a cross section in a shape like a Chinese character 'ji', wherein the upper end and the lower end of the baffle assembly are fixedly connected with the upper cross beam and the lower cross beam of a truck body respectively, and the left end and the right end of the baffle assembly are fixedly connected with a B column of the truck body respectively; the reinforcing beam is horizontally erected in the middle of the partition plate assembly and is connected with the partition plate assembly through spot welding.
Preferably, among the above-mentioned technical scheme, the baffle assembly is formed by upper junction plate and lower main baffle spot welding, and the lower part of lower main baffle is equipped with vertical strengthening rib, and lower main baffle upper portion is equipped with horizontal strengthening rib and the criss-cross strengthening rib of symmetric distribution in horizontal strengthening rib both sides.
Preferably, in the above technical solution, the cross beam in a shape like a Chinese character ji is composed of a cross beam and two end brackets, and the cross beam is provided with a waist-shaped lightening hole with a flanging.
Preferably, in the above technical solution, the lower part of the lower main partition board is provided with 7 vertical reinforcing ribs, the upper part of the lower main partition board 9 is provided with two horizontal reinforcing ribs, and the two sides of the upper part of the lower main partition board are provided with crossed reinforcing ribs.
Preferably, in the above technical solution, the beam is provided with 11 waist-shaped lightening holes with flanges.
Preferably, in the above technical scheme, the left end and the right end of the lower main partition plate are provided with first fixing holes, the upper end of the upper connecting plate and the lower end of the lower main partition plate are respectively provided with second fixing holes, the left end and the right end of the lower main partition plate are connected with the left B column and the right B column of the vehicle body through rivets, and the upper end of the upper connecting plate and the lower end of the lower main partition plate are respectively connected with the fixing holes and the upper cross beam and the lower cross beam of the vehicle body through bolts.
Preferably, in the above technical solution, 2 mounting holes for mounting the upper handrail are left on the lower main partition.
A design method of a light truck partition plate is carried out according to the following steps:
s1, intercepting the front end part of the vehicle body structure, establishing a finite element model of the vehicle body and the partition plate assembly according to a design state, setting the size of a basic grid, and establishing materials, attributes and connections;
s2, setting boundary conditions to perform constrained mode analysis, wherein a solver adopts NASTRAN software, generates a group of orthogonal canonical eigenvectors by utilizing three recursion relations by adopting a Lanczos method, simultaneously, reduces a stiffness matrix of the model into a tri-diagonal matrix, and solves the former 3-order modal frequency value and the modal vibration mode by converting the problem into the tri-diagonal matrix;
s3, setting boundary conditions for safety analysis, and outputting a displacement cloud picture, a strain cloud picture, shear force Fs and tensile force Fa of a Beam unit by a solver by adopting LS-DYNA software;
s4, evaluating whether the performance meets the requirements or not by evaluating the first-order modal frequency value, the maximum displacement of the collision head in the X direction and the equivalent resultant force of the bolt and the rivet;
and S5, optimizing the sensitive parameters, and repeating the first step to the fourth step until the total weight of the parts is minimum and the total cost of the parts is controlled to be less than or equal to the target cost.
Preferably, in the above technical solution, in step S1, the strain rate is set in the material parameters to take into account the influence of the stretching rate on the safety performance of the separator; the failure of the metal plate is considered in a strain failure mode in the material parameters;
in the step S3, in the safety calculation of the partition, the check area of the partition is the area where the bottom plate of the vehicle body is 100mm upwards to 200mm upwards from the top of the seat headrest in the Z direction, and the partition is covered in the Y direction;
in the safety calculation of the partition plate, the impact head is a cylindrical head, the diameter of the impact head is 80mm, the mass of the impact head is 6.0kg, the impact speed is 65km/h, and the impact direction is the-X direction of the vehicle;
at least 5 points are selected for calculation in the safety calculation of the partition board and are respectively positioned at the left end, the right end, the upper end, the lower end and the middle position of the examination area of the partition board;
the rivets or bolts of the bolts are connected by adopting the Beam units, the axial force and the shearing force of the Beam units are output, and whether the strength meets the requirements or not is calculated according to a correlation formula.
In step S4, the evaluation result meets the following condition that the first-order modal frequency value of the partition plate is more than or equal to 35 Hz; the maximum deformation of the partition plate in the X direction in the collision process is less than or equal to 220 mm; the equivalent resultant force of the fastener is less than or equal to the minimum tensile load of the bolt and the rivet;
in step S5, the sensitive parameters of the spacer device include the thickness of the metal plate, the material of the metal plate, the shape of the spacer reinforcing ribs, the shape and number of the end faces of the cross beam shaped like a Chinese character 'ji', the number of bolts, and the number of rivets.
Preferably, in the above technical solution, in step S3, the calculation formula is as follows:
in the formula: axial force of Fa bolt or rivet; fs: shear force of bolts or rivets, Fmin: minimum tensile load of the bolt or rivet; fa is a value greater than zero, and if Fa is negative, then when calculated: fa takes the value 0.
Due to the adoption of the scheme, the beneficial effects of the utility model are that:
1. the utility model provides a light truck baffle device has optimized the structure of crossbeam and the shape of strengthening rib, and its simple structure has improved the modal performance of baffle, and the security performance is good, the quality is light, with low costs. The baffle assembly and the cross beam are divided into two parts, so that stamping forming is facilitated, and the manufacturing manufacturability is good. The two sides of the partition board are connected by rivets, so that the partition board is not easy to fall off and is firm and durable.
2. The utility model provides a light truck baffle design method optimizes through the sensitive parameter to the baffle, has reduced the design risk greatly, has improved product performance and quality, has reduced experimental number of times and test cost, realizes performance maximize, design lightweight, cost optimization simultaneously.
Description of the drawings:
FIG. 1 is a schematic illustration of a pickup truck bulkhead apparatus;
FIG. 2 is a schematic view of a cross member of a pickup truck diaphragm assembly;
FIG. 3 is a schematic view of a bulkhead assembly of the pickup truck bulkhead apparatus;
FIG. 4 is a design of a pickup truck diaphragm device showing the stress-strain curve of material DC03 at different strain rates;
FIG. 5 is a design method for a pickup truck bulkhead apparatus safety calculation boundary condition set;
FIG. 6 is a pickup truck bulkhead apparatus design approach to crash cylinder head size;
FIG. 7 is a pickup truck bulkhead apparatus design approach showing the axial and shear forces of the bolts or rivets;
FIG. 8 is a light truck partition design method partition safety assessment area.
The specific implementation mode is as follows:
the following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, an embodiment of the present invention is a light truck partition device, which is composed of a partition assembly 1 and a reinforcing beam 2 shaped like a Chinese character 'ji', wherein the left and right ends of the partition are provided with fixing holes 3, the upper and lower ends are provided with fixing holes 4, the left and right fixing holes 3 of the partition are connected with left and right B columns of a white body, and the upper and lower fixing holes 4 of the partition are connected with the upper and lower beams of the white body; the left end and the right end of the partition plate are connected with the left B column and the right B column of the body-in-white through rivets, and the upper end and the lower end of the partition plate are connected with the upper cross beam and the lower cross beam of the body-in-white through bolts.
As shown in fig. 2, the cross beam 2 in the shape of a Chinese character 'ji' is composed of a cross beam 5 and two end brackets 6, and 11 waist-shaped lightening holes 7 with flanging are arranged on the cross beam 5;
as shown in fig. 3, the partition assembly 1 is formed by spot welding an upper connecting plate 8 and a lower main partition 9, the lower part of the lower main partition is provided with 7 vertical reinforcing ribs 10, the upper part of the lower main partition 9 is provided with two horizontal reinforcing ribs 11, two sides of the upper part of the lower main partition are provided with crossed reinforcing ribs 12, and 2 mounting holes 13 for mounting upper handrails are reserved on the partition assembly 1.
A light truck partition plate design method comprises the following specific steps:
firstly, intercepting the front end part of a vehicle body structure, establishing a finite element model of a body-in-white and a partition plate assembly according to a design state, wherein the size of a basic grid is 10mm, and establishing materials, attributes and connections;
as shown in FIG. 4, the material DC03 in the model is simulated by a No. 24 elastic-plastic material, and the influence of the strain rate of the material on the safety performance of the partition plate is considered;
material DC03 defines a strain failure with the failure strain value set to 0.9 times the elongation after fracture of the material, and when the material of DC03 in the model exceeds the set value, the failed cells are deleted in the model;
secondly, constraining the cut-off section position 123456 freedom degree of the body-in-white, solving the former 3-order modal frequency value and the modal vibration type by adopting an NASTRAN and a Lanczos method through a solver;
setting boundary conditions for safety analysis, wherein an LS-DYNA is adopted by a solver, and a displacement cloud picture, a strain cloud picture, and a shearing force Fs and a stretching force Fa of a Beam unit (figure 7) are output;
as shown in the shaded part of fig. 8, the assessment area of the partition board is 100mm upward from the bottom plate of the vehicle body in the Z direction to 200mm upward from the top of the headrest of the seat, and the partition board area is covered in the Y direction;
as shown in fig. 6, the impact head of the baffle device is a cylindrical head with a diameter of 80mm, a chamfer size of R60mm at the end, a length of 365mm and a mass of 6.0 kg;
as shown in fig. 5, the initial speed of the collision cylinder head is 65km/h, and the collision direction is the-X direction of the vehicle;
as shown in fig. 8, 5 points are respectively subjected to safety calculation, the positions of the points are respectively located at the upper end, the lower end, the left end, the right end and the middle position of the examination area of the partition plate, and the positions judged to be weak by an engineer are also listed in the examination;
the connected rivets and bolts are connected by Beam units, and the axial force and the shearing force of the Beam units are output;
evaluating whether the performance meets the requirements or not by evaluating the first-order modal frequency value, the maximum displacement of the collision head in the X direction and the equivalent resultant force of the bolt and the rivet;
the evaluation result meets the following condition that the first-order modal frequency value of the partition plate is more than or equal to 35 Hz; maximum position of partition after collisionShift is less than or equal to 220 mm; the equivalent resultant force of the fastener is less than or equal to the minimum tensile load of the bolt and the rivet, and the calculation formula is as follows:
in the formula: fa: axial force of a bolt or rivet; fs: shear force of bolts or rivets; fmin: minimum tensile load of the bolt or rivet; fa is a value greater than zero, and if Fa is negative, Fa is 0 in calculation.
And step five, optimizing sensitive parameters such as the material and the thickness of the partition plate, the shape and the position of the reinforcing ribs, the diameter of the fasteners, the number of the fasteners and the like, and repeating the step one to the step four until the total weight of the part is minimum and the total cost of the part is controlled to be less than or equal to the target cost.
The above description of the embodiments is provided to facilitate those skilled in the art to understand and apply the present invention, and those skilled in the art can make any modification, replacement, improvement, etc. without departing from the spirit of the present invention.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a light truck baffle device, is the stiffening beam (2) of several fonts by baffle assembly (1) and cross-section and constitutes its characterized in that: the upper end and the lower end of the partition plate assembly (1) are fixedly connected with an upper cross beam and a lower cross beam of the car body respectively, and the left end and the right end of the partition plate assembly (1) are fixedly connected with a B column of the car body respectively; the reinforcing beam (2) is horizontally erected in the middle of the partition plate assembly (1), and the reinforcing beam (2) is connected with the partition plate assembly (1) through spot welding.
2. The pickup truck diaphragm assembly as set forth in claim 1, wherein: the partition plate assembly (1) is formed by spot welding an upper connecting plate (8) and a lower main partition plate (9), the lower part of the lower main partition plate (9) is provided with vertical reinforcing ribs (10), and the upper part of the lower main partition plate (9) is provided with horizontal reinforcing ribs (11) and crossed reinforcing ribs (12) which are symmetrically distributed on two sides of the horizontal reinforcing ribs (11).
3. The pickup truck diaphragm assembly as set forth in claim 1, wherein: the n-shaped reinforcing beam consists of a beam (5) and two end supports (6), and the beam (5) is provided with a waist-shaped lightening hole (7) with a flanging.
4. A pick-up truck ramp device as set forth in claim 2, wherein: 7 vertical reinforcing ribs (10) are arranged on the lower portion of the lower main partition plate (9), two horizontal reinforcing ribs (11) are arranged on the upper portion of the lower main partition plate (9), and crossed reinforcing ribs (12) are arranged on two sides of the upper portion of the lower main partition plate (9).
5. A pick-up truck ramp device as set forth in claim 3, wherein: the beam (5) is provided with 11 waist-shaped lightening holes (7) with flanging.
6. A pick-up truck ramp device as set forth in claim 2, wherein: the left end and the right end of the lower main partition board (9) are provided with first fixing holes (3), the upper end of the upper connecting plate (8) and the lower end of the lower main partition board (9) are respectively provided with second fixing holes (4), the left end and the right end of the lower main partition board (9) are connected with the first fixing holes (3) and the left and right B columns of the automobile body through rivets, and the upper end of the upper connecting plate (8) and the lower end of the lower main partition board (9) are connected with the second fixing holes (4) and the upper and lower cross beams of the automobile body through bolts.
7. A pick-up truck ramp device as claimed in claim 2 or 6, wherein: 2 mounting holes (13) for mounting upper vehicle handrails are reserved on the lower main partition plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920839001.3U CN211442226U (en) | 2019-06-04 | 2019-06-04 | Light truck partition plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920839001.3U CN211442226U (en) | 2019-06-04 | 2019-06-04 | Light truck partition plate device |
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| CN211442226U true CN211442226U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920839001.3U Active CN211442226U (en) | 2019-06-04 | 2019-06-04 | Light truck partition plate device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422134A (en) * | 2019-06-04 | 2019-11-08 | 南京依维柯汽车有限公司 | A kind of pickup truck baffle plate device and its design method |
| CN116167172A (en) * | 2023-04-24 | 2023-05-26 | 江铃汽车股份有限公司 | Truck partition board and strength analysis method thereof |
-
2019
- 2019-06-04 CN CN201920839001.3U patent/CN211442226U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422134A (en) * | 2019-06-04 | 2019-11-08 | 南京依维柯汽车有限公司 | A kind of pickup truck baffle plate device and its design method |
| CN116167172A (en) * | 2023-04-24 | 2023-05-26 | 江铃汽车股份有限公司 | Truck partition board and strength analysis method thereof |
| CN116167172B (en) * | 2023-04-24 | 2023-10-13 | 江铃汽车股份有限公司 | Truck partition board and strength analysis method thereof |
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