CN104828139B - Fixing method for aluminum alloy framework of passenger car body bottom plate - Google Patents
Fixing method for aluminum alloy framework of passenger car body bottom plate Download PDFInfo
- Publication number
- CN104828139B CN104828139B CN201510229125.6A CN201510229125A CN104828139B CN 104828139 B CN104828139 B CN 104828139B CN 201510229125 A CN201510229125 A CN 201510229125A CN 104828139 B CN104828139 B CN 104828139B
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- Prior art keywords
- longeron
- crossbeam
- sides
- riveting
- die
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a fixing method for an aluminum alloy framework of a passenger car body bottom plate. The fixing method aims at solving the problems that during the existing passenger car body bottom plate fixation, the connecting effect is poor, the air is polluted during welding, and the rivet riveting cost is high. According to the method, in the process of fixing the aluminum alloy framework of the passenger car body bottom plate, cross beams arranged at two sides of longitudinal beams and the longitudinal beam in the passenger car body bottom plate are riveted and fixed without rivets, the cross beams or the longitudinal beams are clamped through a clamp , the longitudinal beams and the longitudinal beams are riveted together by two hydraulic riveting machines and a female mold through right-angle steel, the two hydraulic riveting machines are provided with male molds, the female mold extends into inside cavities of the cross beams or the longitudinal beams, and the two sides of the female mold are respectively provided with die cavities. The fixing method has the advantages that the riveting performance is good, the connection is stable, the cost is low, the work environment of the method is good, no dust or toxic smoke is exhausted, the noise is avoided, the body harm to operators is avoided, and the fixing method is suitable for being applied and popularized.
Description
Technical field
The present invention relates to railway car manufacture field and in particular to a kind of bus body base plate aluminum alloy framework crossbeam and longeron it
Between fixing meanss.
Background technology
Passenger vehicle develops towards the direction of safety, energy-saving and environmental protection.The appearance of lightweight passenger vehicle is then environmental protection, this side of energy-conservation
To important embodiment.Manufacture with aluminum alloy part and the development of bus Body Design technology, will promote all-aluminium body passenger vehicle
Development.Existing chassis of bus interconnection technique mainly has welding and has rivet.But unlike that steel skeleton underbody
Connection, for aluminum alloy bottom plate skeleton, all there is larger defect in existing two kinds of technology:
1. the weldability of aluminium alloy is poor: the welding side that aluminum is easily oxidized, thermal conductivity big, deformation tendency is big, general
Method is not suitable for.
2. connection effect is poor: during the welding of aluminium alloy, because heat-affected zone is big, workpiece usually can cause to become after repairing
Shape, hardness reduction, sand holes, differential annealing, cracking, pin hole, abrasion, scuffing, undercut or be adhesion not and internal stress is damaged
The shortcomings of hinder, the impact that the rigidity of this Bus Frame for monocoque body and intensity cause is larger；There is riveting during rivet
Follow closely as aluminum, be only applicable to underloading structure.The aluminum skeleton of bus body is monocoque body, and the power of carrying is very big, therefore has rivet
Riveting is not suitable for.
3. for environment, argon arc welding has intensive ultraviolet to produce during welding, also can produce air for welding
Pollutant, the such as harmful gass such as nitrogen oxides, ozone and the noxious fume containing manganese dioxide, iron sesquioxide, volatilization
Metallic element and the metal-oxide producing are harmful.
4. there is rivet technology cost high.On chassis of bus, more than 500, rivet unit price is 2 yuan to riveting point quantity, becomes
Originally more than 1000 yuan.
Content of the invention
Present invention seek to address that the connection effect that existing bus body base plate skeleton exists when fixing is poor, it is empty to weld pollution
Gas, the problem of rivet high cost, there is provided a kind of method of attachment of bus body base plate aluminum alloy framework, the present invention is to adopt
With following technical scheme realize:
A kind of fixing meanss of bus body base plate aluminum alloy framework are it is characterised in that bus body base plate aluminium alloy bone
In frame, longeron and the crossbeam of longeron both sides are all fixed by no rivet, and described no rivet fixation comprises the following steps:
Step one:
A. crossbeam is passed through clamp and dispose on the table；
B. take two steel squares, the plane with beam engagement on each steel square is bonded in horizontal stroke by high-strength structureal adhesives
The both sides of beam one end, and ensure crossbeam side steel square corresponding with the position of the steel square of crossbeam opposite side, determine that each is straight
Four riveting points position with riveting transverse beam needed on angle steel, and ensure riveting point position on the steel square of crossbeam side with horizontal
Riveting point position on the steel square of beam opposite side corresponds；
C. the die all with die cavity for the two ends is controlled from the port of crossbeam one end fixing with steel square by die control bar
Place stretches into crossbeam internal cavities, stops during the riveting point position of steel square determining during the b that die moves in this step,
Die cavity cooperation this riveting of riveting simultaneously being worked with die both sides using two hydraulic riveters carrying punch in crossbeam both sides
Point, carries out the riveting of next riveting point afterwards, totally eight riveting point rivetings in four times on two steel squares of crossbeam one end both sides
Connect and complete；
Step 2:
A. by longeron clamp, take two be fixed on by fixture by the crossbeam that step one has riveted steel square vertical
Beam one end both sides corresponding position；
B. the plane that two steel squares on wherein crossbeam one end and longeron coordinate is passed through high-strength adhesive gluing
It is combined in longeron side, it is gluing that the plane that two steel squares on another crossbeam one end and longeron are coordinated passes through high-strength adhesive
Be combined in longeron opposite side, and ensure longeron side two steel squares corresponding with the position of two steel squares of opposite side, determine
Four riveting points position with longeron riveting is needed on each steel square, and ensures the riveting point position of the steel square of longeron side
Correspond with the riveting point position of the steel square of longeron opposite side
C. the die all with die cavity for the both sides is controlled from the port of the longeron side fixing with steel square by die control bar
Place stretches into rail inner cavity, stops during the riveting point position of steel square determining during a that die moves in this step,
Die cavity cooperation this riveting of riveting simultaneously being worked with die both sides using two hydraulic riveters carrying punch in longeron both sides
Point, afterwards equally with two of the longeron both sides hydraulic riveters carrying punch work simultaneously with the die cavity of die both sides coordinate into
The riveting of row next one riveting point, on four steel squares of this end both sides of longeron, totally ten six riveting points rivet in eight times and complete,
Longeron is completed with two crossbeam fixations of longeron both sides；Compared with existing bus body base plate skeleton fixed form, this method
There are many advantages in operation:
1. rivet performance is good: aluminium sheet ductility and plasticity are good, and easily flowing is it is easy to rivet；
2. good connecting effect: on bonding strength, record that no rivet single-point rivets that static strength is a weld through through test 70%,
But can be equal with spot welding as connected with two point, and higher than welding on resistance to vibration.
3. low cost: the cost of consumption only has the 50% about of spot welding, does not have material loss, saves rivet, reduces buying
Cost；
4. environmental protection: good work environment, do not have dust toxic smoke to discharge, there is no noise, harmless to human body.
Brief description
The present invention is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is a kind of FB(flow block) of the fixing meanss of bus body base plate aluminum alloy framework of the present invention；
Fig. 2 is the axonometric drawing of the concave die that this method uses；
Fig. 3 is the sectional view that die stretches into after crossbeam or longeron with crossbeam or the position relationship of longeron；
Fig. 4 is the structural representation of the punch of hydraulic riveter that this method uses；
Fig. 5 is the schematic diagram that the fixture that this method uses steps up crossbeam or longeron；
Fig. 6 is that steel square is riveted on the signal on crossbeam or longeron using hydraulic riveter and die cooperation by this method
Figure；
Fig. 7 is the schematic diagram after the completion of crossbeam is riveted with steel square；
Fig. 8 is the structural relation schematic diagram fixing the bus body base plate aluminum alloy framework completing with this method；
In figure: 1. die, 2. die stick, 3. crossbeam, 4. punch, 5. fixture location-plate, 6. fixture pressure transmission guide pillar, 7.
Fixture adjusting screw, 8. steel square, 9. longeron
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is explained in detail:
A kind of fixing meanss of bus body base plate skeleton of the present invention, vertical in bus body base plate aluminum alloy framework
The crossbeam 3 of beam 9 and longeron 9 both sides is all fixed by no rivet, and described no rivet fixation comprises the following steps:
Step one:
A. crossbeam 3 is passed through clamp and dispose on the table；
Refering to Fig. 6, crossbeam 3 is positioned on fixture location-plate 5, fixture rotary screw 7 makes it descending, makes fixture guide pillar 6
It is matched for clamping tightly beam 3 with location-plate.
B. take two steel squares 8, the plane that each steel square 8 is coordinated with crossbeam 3 is bonded by high-strength structureal adhesives
In the both sides of crossbeam 3 one end, and ensure crossbeam 3 side steel square 8 corresponding with the position of the steel square 8 of crossbeam 3 opposite side, really
Four riveting points position with crossbeam 3 riveting needed on each steel square 8 fixed, and ensures the riveting on the steel square 8 of crossbeam 3 side
Connecting point position is corresponded with the riveting point position on the steel square 8 of crossbeam 3 opposite side；
C. the die 1 all with die cavity for the two ends is controlled from crossbeam 3 one end fixing with steel square 8 by die control bar 2
Crossbeam 3 internal cavities are stretched in port, the riveting point position of the steel square 8 determining during the b that die 1 moves in this step
When stop, being worked and the cooperation of the die cavity of die 1 both sides using two hydraulic riveters carrying punch 4 in crossbeam 3 both sides simultaneously
Rivet this riveting point, carry out the riveting of next riveting point afterwards, totally eight rivetings on two steel squares of crossbeam 3 one end both sides
Riveting completes point in four times；
Refering to Fig. 1 and Fig. 2, the concave die that the present invention uses is made up of die 1 and die stick 2, the two ends of die 1
Respectively have shape identical and positional symmetry die cavity it is ensured that the punch 4 of two hydraulic riveters and die 1 coordinate
Riveting crossbeam 3 or corresponding two riveting points in longeron 9 one end both sides simultaneously, if the die in concave die 1 only has side to exist
Die cavity, then can only use hydraulic riveter to the aluminium alloy extrusions internal cavities of crossbeam 3 or longeron 9 from side in riveting process
Direction applies the pressure of riveting, and concave die will bear very big pressure, and this pressure can be delivered to die by concave die
The opposite side of control bar 2 or aluminium alloy extrusions is thus lead to its deformation, therefore Design of Dies becomes both sides all to there is the symmetrical of die cavity
Structure, enable aluminum alloy to the section bar left and right sides and rivet simultaneously, so that the extrusion stress that die 1 bears is cancelled out each other moreover it is possible to make
Riveting efficiency doubles.
Step 2:
A. longeron 9 is used clamp, take two to be fixed on by fixture by the crossbeam 3 that step one has riveted steel square
Longeron 9 one end both sides corresponding position；
B. the plane that two steel squares 8 on wherein crossbeam 3 one end are coordinated with longeron 9 is passed through high-strength adhesive glue
It is bonded in longeron 9 side, the plane that two steel squares 8 on another crossbeam 3 one end are coordinated with longeron 9 is glued by high intensity
Rubber alloy is bonded in longeron 9 opposite side, and ensures two steel squares 8 of longeron 9 side and the position of two steel squares 8 of opposite side
Corresponding, the four riveting points position needing with longeron 9 riveting is determined on each steel square 8, and ensures the steel square of longeron 9 side
8 riveting point position is corresponded with the riveting point position of the steel square 8 of longeron 9 opposite side
C. the die 1 all with die cavity for the both sides is controlled from longeron 9 side fixing with steel square 8 by die control bar 2
Longeron 9 internal cavities are stretched in port, the riveting point position of the steel square 8 determining during a that die 1 moves in this step
When stop, being worked and the cooperation of the die cavity of die 1 both sides using two hydraulic riveters carrying punch 4 in longeron 9 both sides simultaneously
Rivet this riveting point, equally worked and 1 liang of die with two of the longeron 9 both sides hydraulic riveters carrying punch 4 afterwards simultaneously
The die cavity cooperation of side carries out the riveting of next riveting point, totally ten six riveting points on four steel squares of this end both sides of longeron 9
Riveting completes in eight times, and longeron 9 is completed with two crossbeam 3 fixations of longeron 9 both sides；
For example, refering to Fig. 8, bus body base plate skeleton needs 18 crossbeams 3 and eight longerons 9, wherein nine crossbeams 3 altogether
It is riveted on one end of this eight longerons 9, in addition nine crossbeams 3 are riveted on the other end of this eight longerons 9, wherein 14 crossbeams
3 need to be riveted between two often adjacent longerons 9, four crossbeams 3 positioned at two borders of bus body base plate skeleton only need by
One end is riveted on the side of adjacent longeron 9, and riveting method is fixed by the way of the no rivet described in all using this method.
The good work environment of the present invention, does not have dust toxic smoke to discharge, does not have noise, whole work flow is no special to environment
Require, carry out in normal productive plant.The skeleton connection procedure of the present invention is the riveting constantly repeating crossbeam and longeron, therefore
Die can be stretched in the cavity of different aluminum alloys section bar, many beams can rivet simultaneously, and the efficiency of work is higher simultaneously.
Claims (1)
1. a kind of fixing meanss of bus body base plate aluminum alloy framework are it is characterised in that bus body base plate aluminum alloy framework
The crossbeam (3) of middle longeron (9) and longeron (9) both sides is all fixed by no rivet, described no rivet fixation include with
Lower step:
Step one:
A. crossbeam (3) is passed through clamp and dispose on the table；
B. two steel squares (8) are taken, the plane that upper for two steel squares (8) and crossbeam (3) are coordinated passes through high-strength adhesive respectively
Agent is bonded in the both sides of crossbeam (3) one end, and ensures the steel square (8) of crossbeam (3) side and the steel square of crossbeam (3) opposite side
(8) position corresponds to, and determines the four riveting points position needing to rivet on each steel square (8) with crossbeam (3), and ensures crossbeam
(3) the riveting point position on the steel square (8) of the riveting point position on the steel square (8) of side and crossbeam (3) opposite side is one by one
Corresponding；
C. being fixed with steel square (8) from crossbeam (3) by the die (1) all with die cavity for die control bar (2) the control two ends
Crossbeam (3) internal cavities are stretched in the port at end, the steel square (8) determining during the b that die (1) moves in this step
Stop during the position of riveting point, worked and die using two hydraulic riveters carrying punch (4) in crossbeam (3) both sides simultaneously
(1) the die cavity cooperation of both sides rivets this riveting point, carries out the riveting of next riveting point afterwards, and the two of crossbeam (3) one end both sides
On individual steel square, totally eight riveting points rivet in four times and complete；
Step 2:
A. longeron (9) is used clamp, take two to rivet the crossbeam of steel square (3) by step one and be fixed on by fixture
Longeron (9) one end both sides corresponding position；
B. the plane that two steel squares (8) on wherein one crossbeam (3) one end and longeron (9) coordinate is passed through high-strength adhesive
Glue bond leads in longeron (9) side, the plane that two steel squares (8) on another crossbeam (3) one end and longeron (9) are coordinated
Cross high intensity adhesive glue and be bonded in longeron (9) opposite side, and ensure two steel squares (8) and the opposite side of longeron (9) side
The position of two steel squares (8) corresponds to, and determines the four riveting points position needing to rivet on each steel square (8) with longeron (9),
And ensure the riveting point position of the riveting point position of steel square (8) of longeron (9) side and the steel square (8) of longeron (9) opposite side
Put one-to-one corresponding；
C. being fixed with steel square (8) from longeron (9) by the die (1) all with die cavity for die control bar (2) the control both sides
Longeron (9) internal cavities are stretched in the port of side, the steel square (8) determining during a that die (1) moves in this step
Stop during the position of riveting point, worked and die using two hydraulic riveters carrying punch (4) in longeron (9) both sides simultaneously
(1) the die cavity cooperation of both sides rivets this riveting point, equally uses two hydraulic-pressure rivetings carrying punch (4) of longeron (9) both sides afterwards
Picking works simultaneously carries out the riveting of next riveting point with the cooperation of the die cavity of die (1) both sides, and the four of longeron (9) this end both sides
On individual steel square, totally ten six riveting points rivet in eight times and complete, and longeron (9) is fixing with two crossbeams (3) of longeron (9) both sides
Complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229125.6A CN104828139B (en) | 2015-05-07 | 2015-05-07 | Fixing method for aluminum alloy framework of passenger car body bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229125.6A CN104828139B (en) | 2015-05-07 | 2015-05-07 | Fixing method for aluminum alloy framework of passenger car body bottom plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104828139A CN104828139A (en) | 2015-08-12 |
| CN104828139B true CN104828139B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510229125.6A Expired - Fee Related CN104828139B (en) | 2015-05-07 | 2015-05-07 | Fixing method for aluminum alloy framework of passenger car body bottom plate |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107336744A (en) * | 2017-07-25 | 2017-11-10 | 白凯 | A kind of caravan frame-type chassis |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH092323A (en) * | 1995-06-26 | 1997-01-07 | Nissan Diesel Motor Co Ltd | Cross-member structure |
| CN101934338A (en) * | 2010-09-07 | 2011-01-05 | 上海交通大学 | Electroplastic rivet-free riveting device |
| CN103448800A (en) * | 2013-08-16 | 2013-12-18 | 镇江飞驰汽车集团有限责任公司 | Automobile auxiliary frame |
| CN103600017A (en) * | 2013-11-25 | 2014-02-26 | 吉林大学 | Self-piercing riveting device of ultrahigh strength steel plates or/and aluminum alloy plates |
| WO2014148671A1 (en) * | 2013-03-20 | 2014-09-25 | 한국차체 주식회사 | Coupling structure of vehicle frame |
-
2015
- 2015-05-07 CN CN201510229125.6A patent/CN104828139B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH092323A (en) * | 1995-06-26 | 1997-01-07 | Nissan Diesel Motor Co Ltd | Cross-member structure |
| CN101934338A (en) * | 2010-09-07 | 2011-01-05 | 上海交通大学 | Electroplastic rivet-free riveting device |
| WO2014148671A1 (en) * | 2013-03-20 | 2014-09-25 | 한국차체 주식회사 | Coupling structure of vehicle frame |
| CN103448800A (en) * | 2013-08-16 | 2013-12-18 | 镇江飞驰汽车集团有限责任公司 | Automobile auxiliary frame |
| CN103600017A (en) * | 2013-11-25 | 2014-02-26 | 吉林大学 | Self-piercing riveting device of ultrahigh strength steel plates or/and aluminum alloy plates |
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| Publication number | Publication date |
|---|---|
| CN104828139A (en) | 2015-08-12 |
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