CN205737704U - The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders - Google Patents
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders Download PDFInfo
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- CN205737704U CN205737704U CN201620689886.XU CN201620689886U CN205737704U CN 205737704 U CN205737704 U CN 205737704U CN 201620689886 U CN201620689886 U CN 201620689886U CN 205737704 U CN205737704 U CN 205737704U
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- high pressure
- fagging
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Abstract
nullA kind of frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders，It includes front fagging、Rear stay plate and floor board framing，Floor board framing includes at least two parallel longerons and many crossbeams，Many crossbeams are the most parallel and intersect vertically with longeron，Front fagging and rear stay plate be respectively fixedly connected with in many crossbeams corresponding longeron foremost with on the front beam of rearmost end and rear cross beam，Front beam in many crossbeams and rear cross beam I-shaped upper below and the thickness of intermediate plate all exceed other crossbeam upper below and the thickness of intermediate plate，The I-shaped height of leading portion at least two longerons is less than the I-shaped height of back segment，And the leading portion of longeron has, between back segment, the changeover portion that I-shaped height is gradually increased，On the leading portion of longeron and back segment, I-shaped following and intermediate plate the thickness of part cross-coupled with front beam and rear cross beam all exceedes the upper following and thickness of intermediate plate at other sections position respectively.
Description
Technical field
This utility model relates to semi-trailer frame technical field, particularly to a kind of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders
Frame reinforcing structure.
Background technology
Semitrailer is that axletree is placed in after vehicle's center of gravity (when the uniform stand under load of vehicle), equipped with can horizontal and vertical power be passed
It is delivered to the trailer of the hookup of tractor, the one being connected by the towing pin on the floor board framing of semitrailer with semi-mounted headstock
Heavy transport vehicle.However as the development of industrial gases, carry between the gases at high pressure strange land such as natural gas and grow with each passing day,
Owing to the initial outlay of pipe network is high, energy expenditure is big, and traditional medium and small volume gas cylinder freight volume is little, then be difficult to the continuous duration
Deng.And several or tens big volume seamless gas cylinder rotatings are fixed on semi-trailer frame by framework or binding form by long tube semitrailer
On, and the connection of gas cylinder head is supplied to user as portable holding vessel supplies gas equipment so that between pipe network conveying and medium and small
Gases at high pressure semitrailer between gas cylinder shipment is developed rapidly, becomes the major way of intercity gas transport.
Vehicle frame is the basic part that semitrailer is maximum, has the features such as longeron length, fulcrum span is big, container area is big, is also
Carry this car load under various operating modes as skeleton, its loading characteristic is to bear relatively bottom the gripper shoe of vehicle frame rear and front end
Big load, and major part region, middle part stress is less.The quality of vehicle frame performance directly influences the load of car load, safety
Property, cruising characteristic etc., it is contemplated that particularity, Transport Safety and the conevying efficiency of gases at high pressure semitrailer purposes, engineering
On require that it must is fulfilled for strength and stiffness requirement.
Utility model content
The purpose of this utility model is to provide the frame reinforcing structure of a kind of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders, its mesh
Be: in the case of guaranteeing that safety does not change the premise of steel cylinder volume, reduce the deadweight of semi-trailer frame, and then improve single
Car transport benefits.
For solving above-mentioned technical problem, this utility model provides the vehicle frame of a kind of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders to strengthen
Structure, it includes that front fagging, rear stay plate and floor board framing, described floor board framing include at least two parallel longerons and many horizontal strokes
Beam, described longeron and crossbeam be I-shaped steel, and described many crossbeams are the most parallel and intersect vertically with described longeron,
Described front fagging and rear stay plate be respectively fixedly connected with in described many crossbeams corresponding described longeron foremost with rearmost end
Front beam and rear cross beam on, front beam in described many crossbeams and rear cross beam I-shaped upper below and intermediate plate
Thickness all exceedes upper following and the thickness of intermediate plate, the I-shaped height of leading portion on described at least two longerons of other crossbeam
Degree is less than the I-shaped height of back segment, and the leading portion of described longeron has, between back segment, the mistake that I-shaped height is gradually increased
The section of crossing, on the leading portion of described longeron and back segment part cross-coupled with described front beam and rear cross beam respectively I-shaped on
Following and intermediate plate thickness all exceedes the upper following and thickness of intermediate plate at other sections position.
It is preferable over: the I-shaped height of described front beam is 120mm, I-shaped following width is 150mm, and institute
State front beam I-shaped upper below and the thickness of intermediate plate is 20mm, the I-shaped height of described rear cross beam be 150mm,
I-shaped following width is 150mm, and I-shaped following and intermediate plate the thickness of described rear cross beam is
15mm。
It is preferable over: on the leading portion of described longeron, the traction by the termination of front end to distance floor board framing is reported the accomplishment of a task or termination of a mission between 20mm
The I-shaped height of one section is 300mm, I-shaped following width is 120mm, I-shaped following and intermediate plate
Thickness is 20mm；By the work of a section between the axletree constraint position of the termination of rear end to semitrailer on the back segment of described longeron
Font height is 380mm, I-shaped following width is 120mm, I-shaped following thickness is 15mm, I-shaped
The equal 20mm of thickness of intermediate plate.
Be preferable over: the I-shaped top of described front beam, rear cross beam and described longeron at grade, described before
The interior turning formed between crossbeam and the I-shaped top of rear cross beam and the I-shaped top of described longeron is provided with rounding
Structure；And the interior turning between described front beam and the I-shaped top of rear cross beam and the I-shaped top of described longeron is arranged
Rounding structure length and width is 100mm, thickness is 20mm, and the arc radius of rounding structure is 100mm.
It is preferable over: between described front fagging and rear stay plate, be fixedly installed the gas for containing gases at high pressure of eight tubular types
Bottle, the gas cylinder of described eight tubular types is at least arranged with two constraint frames, wherein, corresponding to described gas cylinder foremost described in
Steady brace it is connected with respectively, corresponding to described gas between dual-side lower end and the dual-side of described front fagging of constraint frame
Institute it is connected with the most respectively between dual-side lower end and the dual-side of described rear stay plate of the described constraint frame of the rearmost end of bottle
State steady brace.
Being preferable over: opposite side corresponding with described gas cylinder on described rear stay plate is provided with fixed frame, described fixed frame includes
Three groups of square boxs, what described three groups of square boxs were parallel is fixed on four cross bars, and four angles of described three groups of square boxs are solid respectively
Surely being connected on described four cross bars, a limit of described three groups of square boxs is fixedly connected on described rear stay plate, described three groups
Two cross bars that another two ends, limit adjacent with the limit being connected on described rear stay plate on square box connect are fixed on institute
Stating at least two longerons, be often all fixedly installed a brace in diagonal angle wire in group square box, one end of described brace is even
Be connected in described square box on one jiao of the upper edge of corresponding described rear stay plate, the other end is connected on the diagonal angle at this angle.
It is preferable over: the base of described front fagging and rear stay plate has been fixedly connected with angle steel, the most described angle steel
The bilge ways face being fixedly connected on described front fagging and rear stay plate that reclines respectively of a side on, the most described angle
Another side of steel is then formed and is respectively used to be fixedly attached to described front beam and rear cross beam on described front fagging and rear stay plate
On adpting flange.
Being preferable over: described front fagging and rear stay plate are HG785D steel, described fixed frame is Q345B steel, described angle
Steel is Q235 steel.
Compared with prior art, the beneficial effects of the utility model are:
One, the semi-trailer frame after improving is for the most described longeron in stress concentration portion position maximum in stress structure
Be connected between two ends and described front beam, rear cross beam position cross section carry out size-modify, thickening, it is ensured that local stress
Bigger stress can be born in the position concentrated；
Two, formed described sole by described at least two longerons and some crossbeams, and this structure exists at semitrailer
When travelling forward under the dragging of tractor, gas cylinder cause under the effect of inertia force before after fagging and rear stay plate stress stress concentrate
It is transferred on fixed frame, and then reduces the stress that described front fagging is born at the volley with rear stay plate；
Three, the inertia force at gas cylinder is horizontal direction at a right angle with the direction of motion or in downward direction or upward direction
Time, stress, by the transitive set of described front fagging and rear stay plate between front beam and rear cross beam and described longeron, therefore increases
Rounding structure between described front beam and rear cross beam and described longeron, and then improve anti-twist stress performance, thus increase
The overall stress performance of more than half trailer.
Its structure is improved by this utility model based on Stress Field Distribution result, it is achieved lightweight, and does not reduce bicycle
Gas volume rate.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the cross-sectional structure schematic diagram of front beam of the present utility model.
Fig. 3 is the cross-sectional structure schematic diagram of rear cross beam of the present utility model.
Fig. 4 is the cross-sectional structure schematic diagram of the leading portion of longeron of the present utility model.
Fig. 5 is the cross-sectional structure schematic diagram of the rear end of longeron of the present utility model.
Fig. 6 is the partial structurtes schematic diagram of front beam of the present utility model and longeron.
Fig. 7 is the structural representation between rear stay plate of the present utility model and fixed frame.
Detailed description of the invention
The one eight pipe gases at high pressure fortune to the utility model proposes below with reference to accompanying drawing 1 to 7 and preferred embodiment
The frame reinforcing structure of defeated semitrailer is described in greater detail below.
This utility model provide a kind of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders frame reinforcing structure, it include front fagging 1,
Rear stay plate 2 and floor board framing, described floor board framing includes at least two parallel longerons 3 and many crossbeams 4, described longeron 3 and
Crossbeam 4 is I-shaped steel, and described many crossbeams 4 are the most parallel and intersect vertically with described longeron 3, described front fagging
1 and rear stay plate 2 be respectively fixedly connected with in described many crossbeams 4 corresponding described longeron 3 foremost with the front horizontal stroke of rearmost end
On beam 41 and rear cross beam 42, front beam 41 in described many crossbeams 4 and I-shaped following the 43 of rear cross beam 42 and in
Between the thickness of plate 44 all exceed other crossbeam 4 upper below and the thickness of intermediate plate, the leading portion on described at least two longerons 3
I-shaped height is less than the I-shaped height of back segment, and the leading portion of described longeron 3 has I-shaped height between back segment
The changeover portion being gradually increased, the top 31 of the leading portion of described longeron, changeover portion and rear end the most at grade, described longeron
Leading portion, changeover portion and rear end following 31 highly there is difference in height position, on the leading portion of described longeron 3 and back segment respectively with institute
State front beam 41 and I-shaped following the 31 of the cross-coupled part of rear cross beam 42 (scope that in Fig. 1, L1, L2 are indicated)
And the thickness of intermediate plate 32 all exceedes the upper following and thickness of intermediate plate at other sections position.This utility model is specifically
During enforcement, by detecting the Stress Field Distribution result on the vehicle frame of traditional semitrailer, and then stress in motor process is concentrated
The most described front beam in position, the structure of connecting portion between rear cross beam and longeron improve, increase described before horizontal
The thickness at each position of the I-shaped cross section of the connecting portion between beam, rear cross beam and longeron, and then improve stress intensity.
Wherein improve after concrete scheme as follows: shown in Fig. 2, the I-shaped height of described front beam 41 be 120mm, I-shaped upper below
The width of 43 is 150mm, and I-shaped following the 43 of described front beam 41 and the thickness of intermediate plate 44 be 20mm；As
Shown in Fig. 3, the I-shaped height of described rear cross beam 42 is 150mm, the I-shaped width of following 43 is 150mm, and described
I-shaped following the 43 of rear cross beam 42 and the thickness of intermediate plate 44 be 15mm；As shown in Figure 4, the leading portion of described longeron 3
On the I-shaped height of report the accomplishment of a task or termination of a mission between 20mm one section of traction by the termination of front end to distance floor board framing be 300mm, I-shaped
In shape, the width of following 31 is the thickness of 120mm, I-shaped following 31 and intermediate plate 32 and is 20mm；As it is shown in figure 5,
On the back segment of described longeron 3 by the I-shaped height of a section between the axletree constraint position of the termination of rear end to semitrailer it is
380mm, the I-shaped width of following 31 are 120mm, the I-shaped thickness of following 31 is 15mm, I-shaped intermediate plate
The equal 20mm of thickness of 32, the present embodiment provides described longeron 3 and the optimum size of crossbeam 4, makes the chassis light weight of composition, but
Meet structural strength.
Further, as shown in Figure 6, the I-shaped top of described front beam 41, rear cross beam 42 and described longeron 3 is same
In one plane, formed between described front beam 41 and the I-shaped top of rear cross beam 42 and the I-shaped top of described longeron 3
Interior turning is provided with shown in rounding structure 5(Fig. 2 as front beam 41 and longeron 3)；And described front beam 41 and rear cross beam
In interior turning between I-shaped top and the I-shaped top of described longeron 3 of 42 arrange rounding structure 5 length and
Width is 100mm, thickness is 20mm, and the arc radius of rounding structure is 100mm, utilizes described rounding structure 5 to make
Structural continuity is strong, and can strengthen the structural strength between described front beam 41 and rear cross beam 42 and longeron 3, and then strengthens institute
State front fagging 1 and rear stay plate 2 by the stress performance during power of and level vertical with semitrailer traffic direction, described front fagging 1
And rear stay plate 2 is HG785D steel.
As it is shown in figure 1, be fixedly installed between described front fagging 1 and rear stay plate 2 eight tubular types for containing high pressure gas
The gas cylinder 6 of body, the gas cylinder 6 of described eight tubular types is at least arranged with two constraint frames 7, wherein, corresponding to described gas cylinder 6
Steady brace it is connected with respectively between dual-side lower end and the dual-side of described front fagging 1 of the described constraint frame 7 of front end
71, corresponding to described gas cylinder 6 rearmost end described constraint frame 7 dual-side lower end and the dual-side of described rear stay plate 2 between
Be connected with described steady brace 71 the most respectively, by described steady brace 71 make described front fagging 1, rear stay plate 2 respectively with
Between described longeron 3 formed triangular structure, make described front fagging 1, rear stay plate 2 setting structure more stable.
As it is shown in fig. 7, opposite side corresponding with described gas cylinder 6 on described rear stay plate 2 is provided with fixed frame 8, described fixing
Frame 8 includes three groups of square boxs 81, and what described three groups of square boxs 81 were parallel is fixed on four cross bars 82, described three groups of square boxs 81
Four angles be respectively fixedly connected with on described four cross bars 82, a limit of described three groups of square boxs 81 is fixedly connected on described
On rear stay plate 2, another two ends, limit adjacent with the limit being connected on described rear stay plate 2 on described three groups of square boxs 81 are even
Two cross bars 82 connect be fixed on described at least two longerons 3, often equal being fixedly installed in diagonal angle wire in group square box 81
A piece brace 83, one end of described brace 83 is connected in described square box 81 one jiao of the upper edge of corresponding described rear stay plate 2
Upper, the other end is connected on the diagonal angle at this angle, and described fixed frame is Q345B steel.
The base of described front fagging 1 and rear stay plate 2 has been fixedly connected with angle steel (not shown), one to one institute
State on the bilge ways face being fixedly connected on described front fagging 1 and rear stay plate 2 that a side of angle steel reclines respectively, one_to_one corresponding
Another side of described angle steel then formed be respectively used on described front fagging 1 and rear stay plate 2 to be fixedly attached to described before horizontal
Adpting flange on beam 41 and rear cross beam 42, described angle steel is Q235 steel.
This utility model in the specific implementation, as shown in following table one, according to maximum working load situation, using inertia force as
Load boundary condition, analyzes 4 kinds of operating modes the most altogether, particularly as follows:
| Fill medium: compressed natural gas | Carrier gas quality: |
| Cylinder package quality | |
| Forward and backward fagging: HG785D steel plate | Yield limit: |
| Fixed frame: Q345B steel | Yield limit: |
| Angle steel: Q235 steel | Yield limit: |
| Elastic modelling quantity | |
| Poisson's ratio | 0.3 |
Operating mode 1: identical with the direction of motion for inertia force, size is 2mg；
Operating mode 2: for the horizontal direction that inertia force and the direction of motion are at a right angle, size is 1mg；
Operating mode 3: downward for inertia force, size is 2mg；
Operating mode 4: for inertia force upward direction, size is 1mg.
Improving JXY9370GRQ type Fabrication of Semi-trailer for High Pressure Gas cylinder body frame structure for automotive according to mentioned above principle, result shows, work
Before in the case of condition 2, operating mode 3, operating mode 4, fagging 1, rear stay plate 2 maximum stress point appear at and constitute between the horizontal stroke on chassis, longeron
Junction, wherein before the maximum stress value of fagging be respectively 237.6MPa, 179.675 MPa, 86.917 MPa, rear stay plate
Maximum stress value is respectively 241.289 MPa, 171.308 MPa, 83.356MPa；Owing to operating mode 1 boundary condition is motion side
To the inertia force of loading 2mg, and concentrating on rear stay plate 2, size is 215 MPa, will with rear cross beam 42 junction at rear stay plate 2
Generation stress concentration phenomenon, and other operating modes, rear stay plate 2 stress is the least, therefore when operating mode 1, the maximum stress point of front fagging
For near the ring flange that front fagging 1 bottom is connected with front beam 41, size is 179.757 MPa；After improvement, forward and backward fagging should
Power considerably reduces, and not only meets requirement of strength, and improves theoretical foundation for light-weight design.
Comprehensive described, the technical solution of the utility model sufficiently effective can complete above-mentioned utility model purpose, and
Structural principle of the present utility model and principle of work and power are the most sufficiently verified, and can reach intended merit
Imitating and purpose, and embodiment of the present utility model can also convert according to these principles, therefore, this utility model includes one
Cut all replacement contents in the range of being previously mentioned in claim.Any institute in this utility model claim
The equivalence change made, within all belonging to the scope of the claims of this case application.
Claims (8)
1. a frame reinforcing structure for eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders, it includes front fagging, rear stay plate and floor board framing,
Described floor board framing includes at least two parallel longerons and many crossbeams, and described longeron and crossbeam are I-shaped steel,
Described many crossbeams are the most parallel and intersect vertically with described longeron, it is characterised in that: described front fagging and rear stay plate are respectively
Be fixedly connected in described many crossbeams corresponding described longeron foremost with on the front beam of rearmost end and rear cross beam, described
Front beam and I-shaped following and intermediate plate the thickness of rear cross beam in many crossbeams all exceed the upper of other crossbeam
Below and the thickness of intermediate plate, the I-shaped height of leading portion on described at least two longerons is less than the I-shaped height of back segment
Degree, and the leading portion of described longeron has, between back segment, the changeover portion that I-shaped height is gradually increased, the leading portion of described longeron and
On back segment respectively part cross-coupled with described front beam and rear cross beam I-shaped upper below and the thickness of intermediate plate
All exceed the upper following and thickness of intermediate plate at other sections position.
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 1, it is characterised in that: before described
The I-shaped height of crossbeam is 120mm, I-shaped following width is 150mm, and described front beam I-shaped up and down
The thickness of limit and intermediate plate is 20mm, and the I-shaped height of described rear cross beam is 150mm, I-shaped following width is equal
For 150mm, and described rear cross beam I-shaped upper below and the thickness of intermediate plate is 15mm.
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 2, it is characterised in that: described vertical
On the leading portion of beam, the I-shaped height of report the accomplishment of a task or termination of a mission between 20mm one section of traction by the termination of front end to distance floor board framing is
300mm, I-shaped following width are 120mm, I-shaped following and intermediate plate thickness is 20mm；Described vertical
On the back segment of beam, the I-shaped height by a section between the axletree constraint position of the termination of rear end to semitrailer is 380mm, work
Width following on font is 120mm, I-shaped following thickness is 15mm, the thickness of I-shaped intermediate plate is equal
20mm。
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 3, it is characterised in that: before described
The I-shaped top of crossbeam, rear cross beam and described longeron at grade, described front beam and rear cross beam I-shaped
The interior turning formed between top and the I-shaped top of described longeron is provided with rounding structure；And described front beam and after
In interior turning between I-shaped top and the I-shaped top of described longeron of crossbeam arrange rounding structure length and
Width is 100mm, thickness is 20mm, and the arc radius of rounding structure is 100mm.
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 4, it is characterised in that: before described
The gas cylinder for containing gases at high pressure of eight tubular types, the gas cylinder of described eight tubular types it is fixedly installed between fagging and rear stay plate
On be at least arranged with two constraint frames, wherein, corresponding to described gas cylinder described constraint frame foremost dual-side lower end with
Steady brace it is connected with respectively, corresponding to the described constraint of the rearmost end of described gas cylinder between the dual-side of described front fagging
Described steady brace it is connected with the most respectively between dual-side lower end and the dual-side of described rear stay plate of frame.
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 5, it is characterised in that: after described
Opposite side corresponding with described gas cylinder on fagging is provided with fixed frame, and described fixed frame includes three groups of square boxs, described three prescriptions
What shape frame was parallel is fixed on four cross bars, and four angles of described three groups of square boxs are respectively fixedly connected with at described four cross bars
On, a limit of described three groups of square boxs is fixedly connected on described rear stay plate, on described three groups of square boxs be connected to described
Two cross bars that adjacent another two ends, limit, a limit on rear stay plate connect be fixed on described at least two longerons, often group
All being fixedly installed a brace in diagonal angle wire in square box, one end of described brace is connected in described square box corresponding institute
On a jiao of the upper edge stating rear stay plate, the other end is connected on the diagonal angle at this angle.
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 6, it is characterised in that: before described
The base of fagging and rear stay plate has been fixedly connected with angle steel, and it is fixing that a side of the most described angle steel reclines respectively
Being connected on the bilge ways face of described front fagging and rear stay plate, another side of the most described angle steel is then formed described
The adpting flange being fixedly attached on described front beam and rear cross beam it is respectively used on front fagging and rear stay plate.
The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders the most as claimed in claim 7, it is characterised in that: before described
Fagging and rear stay plate are HG785D steel, and described fixed frame is Q345B steel, and described angle steel is Q235 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620689886.XU CN205737704U (en) | 2016-07-04 | 2016-07-04 | The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620689886.XU CN205737704U (en) | 2016-07-04 | 2016-07-04 | The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205737704U true CN205737704U (en) | 2016-11-30 |
Family
ID=57379425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620689886.XU Expired - Fee Related CN205737704U (en) | 2016-07-04 | 2016-07-04 | The frame reinforcing structure of eight pipe Fabrication of Semi-trailer for High Pressure Gas cylinders |
Country Status (1)
| Country | Link |
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| CN (1) | CN205737704U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977619A (en) * | 2019-12-16 | 2021-06-18 | 北汽福田汽车股份有限公司 | Electric automobile frame and electric automobile |
-
2016
- 2016-07-04 CN CN201620689886.XU patent/CN205737704U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977619A (en) * | 2019-12-16 | 2021-06-18 | 北汽福田汽车股份有限公司 | Electric automobile frame and electric automobile |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170704 |