CN107738658A - A kind of 100% low-floor tramcar vehicle body bottom frame - Google Patents

A kind of 100% low-floor tramcar vehicle body bottom frame Download PDF

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Publication number
CN107738658A
CN107738658A CN201710886481.4A CN201710886481A CN107738658A CN 107738658 A CN107738658 A CN 107738658A CN 201710886481 A CN201710886481 A CN 201710886481A CN 107738658 A CN107738658 A CN 107738658A
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CN
China
Prior art keywords
cover plate
vehicle body
mounting seat
bottom frame
body bottom
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710886481.4A
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Chinese (zh)
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CN107738658B (en
Inventor
王万静
王晓军
展旭和
赵子豪
刘韶庆
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CRRC Qingdao Sifang Co Ltd
Original Assignee
CRRC Qingdao Sifang Co Ltd
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Priority to CN201710886481.4A priority Critical patent/CN107738658B/en
Publication of CN107738658A publication Critical patent/CN107738658A/en
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Publication of CN107738658B publication Critical patent/CN107738658B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F1/00Underframes
    • B61F1/06Underframes specially adapted for locomotives or motor-driven railcars

Abstract

The present invention relates to a kind of 100% low-floor tramcar vehicle body bottom frame, weldering is organized by two parts to form, two parts are respectively the chassis front portion and the chassis rear portion positioned at steering framing wheel to overlying regions being connected with drivers' cab, chassis front portion includes front beam, the front side beam and main beam of both sides, at least two front longitudinals are provided between front beam and main beam, chassis rear portion includes back end beam, side bar afterwards, two floor side members and two groups of bogie cover plate compositions, the both ends of floor side member, which are respectively welded, to be fixed on back end beam and main beam, chassis is anterior and the material at chassis rear portion is stainless steel, bogie cover plate composition is formed by stainless steel plate bending, be hinged mounting seat is welded on back end beam.The present invention has the advantages of in light weight, strength and stiffness are good, and transmission force property is good, and the chassis rear portion in bogie region employs modularized design, can realize that structure is exchanged with the respective regions of middle car, improve the versatility of maintenance.

Description

A kind of 100% low-floor tramcar vehicle body bottom frame
Technical field
The invention belongs to technical field of rail traffic, more particularly to a kind of 100% low-floor tramcar vehicle body bottom frame.
Background technology
100% low-floor tramcar is one of important tool of modern city track traffic, facilitates passenger to take with it, Organize into groups various, flexible operation, with being welcome deeply by each city the features such as existing bus platform and road surface resource-sharing.
Chassis is one of pith of 100% low-floor car body, and for the vehicle body bottom frame on bogie, it assume responsibility for car The weight of body, and need tractive force being delivered on car body from bogie, it is therefore desirable to which vehicle body bottom frame has certain intensity And rigidity, and need preferable transmission force property.
Current low-floor vehicle body bottom frame mainly uses full carbon steel structure or aluminum alloy section structure design.Full carbon steel car Body chassis intensity, good rigidity, but weight is excessive;Aluminium alloy extrusions vehicle body bottom frame lighter in weight, but rigidity is relatively low, in order to increase Big bending rigidity, prevent sheet material from producing unstability, it is necessary to increase thickness of slab.In addition, the decay resistance of aluminum alloy materials it is poor, it is necessary to Carry out anti-corrosion protection.
The content of the invention
Present invention is primarily aimed at solve the above problems, there is provided a kind of in light weight, strength and stiffness are good, transmission force property It is good, and the 100% low-floor tramcar vehicle body bottom frame that the degree of modularity is high.
To achieve the above object, the technical scheme is that:
A kind of 100% low-floor tramcar vehicle body bottom frame, the chassis are organized weldering by two parts and formed, two parts point The chassis front portion that Wei be connected with drivers' cab and the chassis rear portion positioned at steering framing wheel to overlying regions;The chassis front portion includes Front beam, the front side beam and main beam of both sides, the both sides of the front beam and main beam are weldingly fixed on the front side beam of both sides, At least two front longitudinals are provided between the front beam and main beam, between the front longitudinal and front longitudinal and front side beam Between be provided with multiple preceding needle beams;The chassis rear portion includes back end beam, the rear side bar of both sides, two floor side members and two groups Bogie cover plate is formed, and the both sides of the back end beam are weldingly fixed on the rear side bar of both sides, the both ends difference of the floor side member Be weldingly fixed on back end beam and main beam, described in two groups bogie cover plate composition be respectively welded be fixed on respective side it is described after On longeron, rear side bar and front side beam, set respectively between longeron and between floor side member and rear side bar and/or front side beam in the rear Needle beam after multiple;The chassis is anterior and the material at chassis rear portion is stainless steel, and the bogie cover plate composition is by stainless steel Plate bending forms, and welds be hinged mounting seat on end carriage in the rear.
Further, two front longitudinals are set between the front beam and main beam, and two front longitudinals are in horizontal plane Upper is in front wide and rear narrow oblique layout structure.
Further, the front beam and/or front longitudinal and/or main beam and/or preceding needle beam and/or rear needle beam is not Rust steel plate bending structure.
Further, the section of the floor side member is " II " shape, is welded by upper plate, lower plate and two side plate splicings.
Further, the upper plate and lower plate are in the "eight" shape extended out at both ends.
Further, the arc that the floor side member is integrally bent upwards along length over ends of body direction in center section.
Further, the centre of the back end beam is provided with c-shaped opening, and the end insertion of the be hinged mounting seat is arranged on institute State in c-shaped opening and be welded to connect.
Further, the be hinged mounting seat is the structure of split, is made up of preceding mounting seat and rear mounting seat butt welding, Multiple cant boards are welded between the preceding mounting seat and rear mounting seat, are provided with mounting hole in mounting seat in the rear.
Further, the preceding mounting seat is formed by upper and lower two " T " shape structures part butt welding.
Further, the back end beam is degree of lip-rounding beam, is formed by upper and lower two U-shapeds bending part butt welding.
Further, bogie cover plate composition includes cover plate longeron and formed and for installing the first cover plate and the of seat Two cover plates, first cover plate are symmetrical arranged two along length over ends of body direction, and second cover plate is arranged on two the first cover plates Centre, cover plate longeron composition is fixedly connected with side wall, and first cover plate, the sidepiece of the second cover plate are weldingly fixed on lid On plate longeron composition.
Further, it is provided with the upper surface of second cover plate in netted panting beam.
Further, the cover plate longeron composition by longeron under longeron, cover plate on cover plate and is arranged on longeron on the cover plate And multiple first vertical beams composition under cover plate between longeron, under the cover plate rear and front end of longeron respectively by the second vertical beam with Front side beam and rear side bar are welded to connect.
Further, the side towards car body longitudinal centre line of longeron is provided with horizontal backstop mounting seat in the rear, Relative opposite side is provided with lateral damper mounting seat, is provided with drawing pull bar mounting seat on the lower surface thereof.
Further, the be hinged mounting seat is made up of carbon steel material.
In summary, a kind of 100% low-floor tramcar vehicle body bottom frame provided by the invention, it is overall to use high intensity not Become rusty Steel material, and structure is that the partial structurtes such as light sheet bending part, mounting seat use carbon steel material, has in light weight, strength and stiffness The advantages of good, and transmission force property is good.In addition, the chassis rear portion in bogie region employs modularized design, Ke Yiyu The respective regions of middle car realize that structure is exchanged, and simplify production technology, improve the versatility of maintenance.
Brief description of the drawings
Fig. 1 is the structural representation of vehicle body bottom frame of the present invention;
Fig. 2 is Fig. 1 backside structure figure;
Fig. 3 is back end beam local structural graph of the present invention;
Fig. 4 is longitudinal beam structure figure in rear end of the present invention;
Fig. 5 is the be hinged mounting seat structure chart of the present invention.
As shown in Figures 1 to 5, chassis front portion 1, chassis rear portion 2, front beam 3, front side beam 4, main beam 5, front longitudinal 6 are preceding Needle beam 7, riser 8, backing plate 9, stiffener plate 10, connector 11, stiffening plate 12, back end beam 13, rear side bar 14, floor side member 15, Upper plate 15a, lower plate 15b, side plate 15c, bogie cover plate composition 16, needle beam 17 after first, needle beam 18 after second, after the 3rd Needle beam 19, needle beam 20 after the 4th, shock absorber mounting seat 21, it is hinged mounting seat 22, c-shaped opening 23, preceding mounting seat 24, rear peace Fill seat 25, cant board 26, mounting hole 27, opening 28, cover plate longeron composition 29, longeron 29a under cover plate, the first cover plate 30, upper lid Plate 30a, first end plate 30b, the second end plate 30c, side plate 30d, the second cover plate 31, cover plate 31a, end plate 31b, side plate 31c, bottom plate 31d, the first vertical beam 32, the second vertical beam 33, the 3rd vertical beam 34, stiffening plate 35, panting beam 36, horizontal backstop mounting seat 37, laterally Shock absorber mounting seat 38, drawing pull bar mounting seat 39.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings:
As depicted in figs. 1 and 2, a kind of 100% low-floor tramcar vehicle body bottom frame provided by the invention, its front end and department Machine room chassis connects, and is hinged between the vehicle body bottom frame that rear end passes through adjacent compartment.The chassis is organized weldering by two parts and formed, and two Individual part is respectively the chassis front portion 1 and the chassis rear portion 2 positioned at steering framing wheel to overlying regions being connected with drivers' cab.In order to On the premise of ensureing chassis overall construction intensity and rigidity, the gross weight of chassis is reduced, meets the light-weighted requirement of vehicle, this reality Apply in example, the material at chassis front portion 1 and chassis rear portion 2 preferably uses stainless steel material.
As shown in Fig. 1 and Fig. 1, chassis front portion 1 includes front beam 3, positioned at cross-car (referring to width of the carbody direction) both sides Front side beam 4 and main beam 5, front beam 3 and the drivers' cab chassis in front be bolted connection or be welded to connect, front beam 3 is arranged in parallel with main beam 5, and the both sides of front beam 3 and main beam 5 are respectively welded on the front side beam 4 for being fixed on both sides, preceding The centre of end carriage 3 and main beam 5 is provided with least two front longitudinals 6, between adjacent front longitudinal 6 and front longitudinal 6 and front Multiple preceding needle beams 7 are provided between beam 4, further to increase the overall construction intensity of chassis front portion 1 and rigidity.Before chassis The overall structure in framework in portion 1, front beam 3, front side beam 4, main beam 5, front longitudinal 6 are with car body longitudinal direction (referring to length over ends of body direction) It is symmetrical arranged centered on center line.
In the present embodiment, on the premise of the overall construction intensity and rigidity of chassis front portion 1 is ensured, in order to mitigate weight, Two front longitudinals 6 are only set between front beam 3 and main beam 5, and the rear and front end of front longitudinal 6, which is respectively welded, is connected to front beam 3 with main beam 5, and two front longitudinals 6 are preferably using being in front wide and rear narrow oblique layout structure in the horizontal plane, i.e., before two Width between longeron 6 and the tie point of front beam 3 is more than the width between the tie point of main beam 5, and this structure can be not On the premise of increasing anterior 1 gross weight of chassis, make the power transmission effect of car body front end more smooth, improve power transmission performance.
In the present embodiment, front side beam 4 uses bar section of stainless steel structure, has section bar cavity among it, and section is inverted L-shaped, To improve the structural strength of front side beam 4 and rigidity, welding stress is reduced.Front beam 3, main beam 5, front longitudinal 6, preceding needle beam 7 preferably use stainless steel plate bending structure.Wherein, front beam 3 is rearward open U-shaped bending part, in U-shaped bending part Internal welding is connected to multiple risers 8, and the inner surface of top, sidepiece and the bottom of riser 8 with front beam 3 is welded to connect, with enhancing The structural strength and rigidity of front beam 3.The position that the upper hem of front beam 3 is connected with both sides front side beam 4 has the part widened, To increase the bonding area between front beam 3 and front side beam 4, increase bonding strength, may be otherwise individually one piece of triangle of welding The stiffening plate (not shown) of shape is used to increase bonding strength.Multiple pads are also uniformly installed on the preceding surface of front beam 3 Plate 9, backing plate 9 are arranged on front beam 3 by bolt.Main beam 5 is identical with front beam 3, for U-shaped bending open forwards Part.Front longitudinal 6 is similarly the bending part that section is U-shaped, and the direction of front side beam 4 of front longitudinal 6 to homonymy is open, and the two of front longitudinal 6 Insertion front beam 3 connects with the interior welds of main beam 5 respectively at end.Between two front longitudinals 6, each front longitudinal 6 and homonymy Front side beam 4 between be provided with two preceding needle beams 7, preceding needle beam 7 is also bending part, and its section can be U-shaped, can also To be Z-shaped, it is welded to connect between preceding needle beam 7 and front longitudinal 6 and front side beam 4, in the junction of preceding needle beam 7 and front longitudinal 6 also The connector 11 of L-shaped can be welded with, with the bonding strength between needle beam before increase by 7 and front longitudinal 6.In main beam 5 with before The junction of side bar 4 is also welded with the stiffening plate 12 of triangle, to increase the bonding strength between main beam 5 and front side beam 4. Multiple lightening holes are provided with main beam 5, preceding needle beam 7, are further mitigated on the premise of structural strength and rigidity is ensured The weight of chassis.
As depicted in figs. 1 and 2, chassis rear portion 2 includes back end beam 13, the rear side bar 14 positioned at cross-car both sides, indulged afterwards Beam 15 and two groups of bogie cover plate compositions 16.The both sides of back end beam 13 are weldingly fixed on the rear side bar 14 of both sides, in order to improve The transmission force property of chassis, in the present embodiment, two floor side members 15, the preceding thing two of two floor side members 15 are set in chassis rear portion 2 End, which is respectively welded, to be fixed on main beam 5 and back end beam 13.Two groups of bogie cover plate compositions 16 are respectively welded and are fixed on respective side Floor side member 15, be compartment gang way floor between two floor side members 15 on rear side bar 14 and front side beam 4, the ground with chassis front portion 1 Plate is concordant.14, two floor side members 15 of side bar and two groups of bogie cover plate compositions 16 longitudinally (are referred to car body after back end beam 13, two Length over ends of body direction) it is symmetrical arranged centered on center line.The part at the chassis rear portion 2 in bogie region employs modularization and set Meter, it can realize that structure is exchanged with the respective regions of middle car, simplify production technology, improve the versatility of maintenance.
As shown in Figure 2, Figure 3 and Figure 4, in the present embodiment, two floor side members 15 are correspondingly arranged with two front longitudinals 6, to protect Demonstrate,prove the transfer performance of power.The arc that floor side member 15 is integrally bent upwards along length over ends of body direction in center section, to meet bottom The space requirement of bogie.In order to improve the structural strength of floor side member 15 and transmission force property, the section of floor side member 15 preferably uses " II " shape, it is welded by upper plate 15a, lower plate 15b and two side plate 15c splicings.Upper plate 15a, lower plate 15b and two side plates 15c end is welded to connect with main beam 5 and back end beam 13 respectively, and preferably, upper plate 15a and lower plate 15b distinguish at both ends In to the "eight" shape structure extended out, to increase the bonding area between floor side member 15 and main beam 5 and back end beam 13, improve The bonding strength of floor side member 15, further improves transmission force property.
Side bar 14 is identical with the structure of front side beam 4 afterwards, using bar section of stainless steel structure, has section bar cavity among it, Section is inverted L-shaped, to improve the structural strength of front side beam 4 and rigidity, reduces welding stress.
Multiple rear small horizontal strokes are set respectively between two floor side members 15 and between floor side member 15 and rear side bar 14 and front side beam 4 Beam, further to increase the overall construction intensity at chassis rear portion 2 and rigidity.Welded between floor side member 15 and the front side beam 4 of homonymy Needle beam 17 after connecing one first in succession is small after being also welded to connect one second between floor side member 15 and the rear side bar 14 of homonymy Crossbeam 18, needle beam after four are welded between two floor side members 15, the needle beam 19 after the 3rd of front-end and back-end Both sides are respectively welded on the side surface of floor side member 15 of both sides, and needle beam 20 is welded on both sides after two the 4th of centre Floor side member 15 lower surface on, be welded with shock absorber mounting seat 21 after the 4th on needle beam 20, needle beam 20 welds after the 4th Connect to be fixed on the lower surface of floor side member 15 while can also offset and the difference in height to be formed is bent upwards among floor side member 15 so that two Floor between individual floor side member 15 is concordant.Needle beam 19 uses not after needle beam the 18, the 3rd after needle beam 17, second after first Become rusty steel bending structure, and section is U-shaped or Z-shaped.Needle beam 20 is by two L-shaped stainless steel plates and middle connecting plate welding after 4th Form, further to improve the structural strength and rigidity of needle beam 20 after the 4th.Needle beam 20 is connected with floor side member 15 after 4th Place can also weld stiffener plate 10 further to increase bonding strength.
As shown in Figures 2 and 3, in the present embodiment, back end beam 13 preferably uses degree of lip-rounding beam, by upper and lower two U-shaped bending parts Butt welding forms, and to improve the structural strength of back end beam 13 and transmission force property, while increases between be hinged mounting seat 22 Bonding strength.
A c-shaped opening 23 is provided with the centre of back end beam 13, the leading section insertion of be hinged mounting seat 22 is arranged on C-shaped In opening 23 and connect, the EDGE CONTACT of c-shaped opening 23 and be hinged mounting seat 22 coordinates, and is welded using border and realizes connection.Hinge It is overall trapezoidal to connect mounting seat 22, the end portion width being connected with c-shaped opening 23 is more than the end portion width of the other end, to increase hinge The bonding area between mounting seat 22 and back end beam 13 is connect, increases bonding strength.
As shown in Figure 3 and Figure 5, the assembling of be hinged mounting seat 22 for convenience, is hinged structure of the mounting seat 22 using split, It is made up of preceding mounting seat 24 and the butt welding of rear mounting seat 25, two sides is welded between preceding mounting seat 24 and rear mounting seat 25 Riser 26, the mounting hole 27 for installing articulated mounting is provided with rear mounting seat 25.Have among be hinged mounting seat 22 There is the opening 28 of up/down perforation, convenient to install articulated mounting while weight is mitigated, two cant boards 26 set up separately in opening 28 Both sides.
Preceding mounting seat 24 generally I-shaped after welding, the horizontal sides and vertical edges of the front end of I-shaped are with after The edge border of the c-shaped opening 23 of end carriage 13 is welded to connect.The assembling of be hinged mounting seat 22 for convenience, preceding mounting seat 24 is by upper Lower two " T " shape structures part butt welding is formed, and the vertical section of rear mounting seat 25 is substantially U-shaped, preceding mounting seat 24 and rear peace Dress seat 25 is provided with welding groove in the opening position of docking.
In the present embodiment, be hinged mounting seat 22 is made of carbon steel material, to improve the overall structure of be hinged mounting seat 22 Strength and stiffness.The two " T " shape structure parts and rear mounting seat 25 of preceding mounting seat 24 are respectively adopted cast carbon steel and formed, and ensure strong Degree and raising power transmission performance.The be hinged technique of mounting seat 22 is simple, has good rigidity and intensity, meets bearing requirements And requirements of installation space.
Bogie cover plate composition 16 is to provide suitable working space to be formed to bogie, while is the seat on its top Chair installation provides enough strength and stiffness.As depicted in figs. 1 and 2, every group of bogie cover plate 16 structures of composition are identical, include Cover plate longeron composition 29 and the first cover plate 30 and the second cover plate 31 for installing seat.First cover plate 30 is along length over ends of body direction Two are symmetrical arranged, cross seat is installed on the first cover plate 30, the second cover plate 31 is arranged on the centre of two the first cover plates 30, the Two cover plates 31 are installed higher than the first cover plate 30, and longitudinal seat is installed on the second cover plate 31.Cover plate longeron composition 29 is used for chassis Connected with vehicle body side wall, the first cover plate 30, the sidepiece of the second cover plate 31 are weldingly fixed on cover plate longeron composition 29.
Cover plate longeron composition 29 is made up of longeron 29a under longeron (not shown) on cover plate and cover plate, longeron on cover plate It is be arranged in parallel with longeron 29a under cover plate, is provided with multiple first vertical beams 32 between longeron 29a under longeron and cover plate on the cover board, Longeron 29a rear and front end is welded to connect by the second vertical beam 33 with front side beam 4 and rear side bar 14 respectively under cover plate.
Longeron 29a is formed by stainless steel plate bending under longeron and cover plate on cover plate, and the section of longeron is inverted L-shaped on cover plate, Longeron 29a section is U-shaped under cover plate.The section of first vertical beam 32 is U-shaped.While weight is mitigated, cover plate can be improved The structural strength and rigidity of longeron composition 29.
First cover plate 30 is made up of upper cover plate 30a, first end plate 30b, the second end plate 30c, side plate 30d, upper cover plate 30a, First end plate 30b, the second end plate 30c, side plate 30d are formed by stainless steel plate bending, upper cover plate 30a integrally in step-like, with Close the installation of each part of bogie of lower section.Side plate 30d bottom is weldingly fixed on the upper plate 15a of floor side member 15, side plate 30d Rear and front end be respectively welded with the 3rd vertical beam 34, the bottom of the 3rd vertical beam 34 is also welded on the upper plate 15a of floor side member 15.First End plate 30b another side is welded to connect with the second vertical beam 33, and upper cover plate 30a side is welded to connect the longeron 29a under cover plate On, meet seat bearing requirements.
Second cover plate 31 is made up of cover plate 31a, forward and backward end plate 31b, side plate 31c and bottom plate 31d, cover plate 31a, forward and backward End plate 31b, side plate 31c, bottom plate 31d formed by stainless steel plate bending.Forward and backward end plate 31b bottom and the first cover plate 30 Upper cover plate 30a be welded to connect, forward and backward end plate 31b side is welded to connect with the first vertical beam 32, forward and backward end plate 31b's Stiffening plate 35 is also welded between opposite side and upper cover plate 30a.Welded with longeron in the first vertical beam 32 and cover plate cover plate 31a side Connect in succession.Side plate 31c is T-shaped, is welded to connect with upper cover plate 30a, the second end plate 30c.Bottom plate 31d and the second end plate 30c and after Longeron 15 is welded to connect, and bottom plate 31d is concordant with gang way floor.It is additionally provided with cover plate 31a upper surface by crossbeam and longeron Composition is in netted panting beam 36, improves the vertical stiffness of the second cover plate 31, meets seat bearing requirements.
The side towards car body longitudinal centre line of floor side member 15 is provided with horizontal backstop mounting seat 37, relative one Side is provided with lateral damper mounting seat 38, is provided with drawing pull bar mounting seat 39 on the lower surface thereof.
The Undercarriage structure of the present invention integrally uses high-strength stainless steel material, and structure is light sheet bending part, not only in light weight, And intensity, good rigidity, transmission force property are good.The Undercarriage structure can ensure that all floor levels of car body area are not higher than 350mm is strong by property.
As described above, the plan content with reference to given by accompanying drawing, can derive similar technical scheme.In every case it is not de- From the content of technical solution of the present invention, any simple modification made according to technical spirit of the invention to above example, etc. With change and modification, in the range of still falling within technical solution of the present invention.

Claims (15)

  1. A kind of 1. 100% low-floor tramcar vehicle body bottom frame, it is characterised in that:The chassis is organized weldering by two parts and formed, Two parts are respectively the chassis front portion and the chassis rear portion positioned at steering framing wheel to overlying regions being connected with drivers' cab;
    The chassis is anterior to include front beam, the front side beam and main beam of both sides, the both sides welding of the front beam and main beam It is fixed on the front side beam of both sides, at least two front longitudinals is provided between the front beam and main beam, described preceding vertical Multiple preceding needle beams are provided between beam and between front longitudinal and front side beam;
    The chassis rear portion includes back end beam, the rear side bar of both sides, two floor side members and two groups of bogie cover plate compositions, after described The both sides of end carriage are weldingly fixed on the rear side bar of both sides, and the both ends of the floor side member, which are respectively welded, is fixed on back end beam and main horizontal stroke Liang Shang, bogie cover plate composition is respectively welded on the floor side member for being fixed on respective side, rear side bar and front side beam described in two groups, Multiple rear needle beams are set respectively between longeron and between floor side member and rear side bar and/or front side beam in the rear;
    The chassis is anterior and the material at chassis rear portion be stainless steel, the bogie cover plate form by stainless steel plate bending and Into welding is hinged mounting seat on end carriage in the rear.
  2. A kind of 2. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:Before described Two front longitudinals are set between end carriage and main beam, and two front longitudinals are in front wide and rear narrow oblique layout knot in the horizontal plane Structure.
  3. A kind of 3. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:The front end Beam and/or front longitudinal and/or main beam and/or preceding needle beam and/or rear needle beam are stainless steel plate bending structure.
  4. A kind of 4. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:It is vertical after described The section of beam is " II " shape, is welded by upper plate, lower plate and two side plate splicings.
  5. A kind of 5. 100% low-floor tramcar vehicle body bottom frame according to claim 4, it is characterised in that:The upper plate At both ends it is in the "eight" shape extended out with lower plate.
  6. A kind of 6. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:It is vertical after described The arc that beam is integrally bent upwards along length over ends of body direction in center section.
  7. A kind of 7. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:The rear end The centre of beam is provided with c-shaped opening, and the end insertion of the be hinged mounting seat, which is arranged in the c-shaped opening, to be welded to connect.
  8. A kind of 8. 100% low-floor tramcar vehicle body bottom frame according to claim 7, it is characterised in that:It is described be hinged Mounting seat is the structure of split, is made up of preceding mounting seat and rear mounting seat butt welding, in the preceding mounting seat and rear mounting seat Between be welded with multiple cant boards, mounting hole is provided with mounting seat in the rear.
  9. A kind of 9. 100% low-floor tramcar vehicle body bottom frame according to claim 8, it is characterised in that:Pacify before described Dress seat is formed by upper and lower two " T " shape structures part butt welding.
  10. A kind of 10. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:The rear end Beam is degree of lip-rounding beam, is formed by upper and lower two U-shapeds bending part butt welding.
  11. A kind of 11. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:The steering Frame cover plate composition includes cover plate longeron and formed and for installing the first cover plate and the second cover plate of seat, and first cover plate is along car Body length direction is symmetrical arranged two, and second cover plate is arranged on the centre of two the first cover plates, the cover plate longeron composition It is fixedly connected with side wall, first cover plate, the sidepiece of the second cover plate are weldingly fixed on cover plate longeron composition.
  12. A kind of 12. 100% low-floor tramcar vehicle body bottom frame according to claim 11, it is characterised in that:Described It is provided with the upper surface of second cover plate in netted panting beam.
  13. A kind of 13. 100% low-floor tramcar vehicle body bottom frame according to claim 11, it is characterised in that:The lid Plate longeron composition is by longeron under longeron, cover plate on cover plate and is arranged on the cover plate multiple between longeron under longeron and cover plate First vertical beam is formed, and the rear and front end of longeron is connected by the second vertical beam and front side beam and rear side bar welding respectively under the cover plate Connect.
  14. A kind of 14. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:In the rear The side towards car body longitudinal centre line of longeron is provided with horizontal backstop mounting seat, is provided with relative opposite side and laterally subtracts Shake device mounting seat, be provided with drawing pull bar mounting seat on the lower surface thereof.
  15. A kind of 15. 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that:It is described be hinged Mounting seat is made up of carbon steel material.
CN201710886481.4A 2017-09-27 2017-09-27 A kind of 100% low-floor tramcar vehicle body bottom frame Active CN107738658B (en)

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CN107738658B CN107738658B (en) 2019-04-16

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Cited By (10)

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CN110481584A (en) * 2019-09-11 2019-11-22 中车株洲电力机车有限公司 A kind of low-floor car body Undercarriage structure and tramcar
CN110667629A (en) * 2019-10-25 2020-01-10 中铁轨道交通装备有限公司 End beam and lower part hinged mounting base structure of low-floor tramcar motor car
CN110682931A (en) * 2019-10-28 2020-01-14 中铁轨道交通装备有限公司 Car body chassis and have its tram
CN110860770A (en) * 2019-11-29 2020-03-06 安徽雷尔伟交通装备有限公司 Vehicle body underframe assembly and welding process thereof
CN111361590A (en) * 2018-12-25 2020-07-03 中车唐山机车车辆有限公司 Double-deck rail vehicle and automobile body thereof
CN111361591A (en) * 2018-12-25 2020-07-03 中车唐山机车车辆有限公司 Double-deck rail vehicle and chassis thereof
CN112171095A (en) * 2020-09-24 2021-01-05 中车长春轨道客车股份有限公司 Shape and position deformation control welding method for underframe floor of motor train unit
CN112622966A (en) * 2020-12-04 2021-04-09 中车南京浦镇车辆有限公司 Vehicle bottom high longitudinal beam, vehicle body and rubber wheel train
CN113682336A (en) * 2021-08-17 2021-11-23 中车青岛四方机车车辆股份有限公司 Vehicle hinge device, vehicle chassis and vehicle

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CN109178009A (en) * 2018-11-08 2019-01-11 中车株洲电力机车有限公司 100% low-floor rail vehicle chassis of one kind and 100% low-floor rail vehicle
CN111361591B (en) * 2018-12-25 2021-03-30 中车唐山机车车辆有限公司 Double-deck rail vehicle and chassis thereof
CN111361590A (en) * 2018-12-25 2020-07-03 中车唐山机车车辆有限公司 Double-deck rail vehicle and automobile body thereof
CN111361591A (en) * 2018-12-25 2020-07-03 中车唐山机车车辆有限公司 Double-deck rail vehicle and chassis thereof
CN110481584A (en) * 2019-09-11 2019-11-22 中车株洲电力机车有限公司 A kind of low-floor car body Undercarriage structure and tramcar
CN110481584B (en) * 2019-09-11 2020-08-21 中车株洲电力机车有限公司 Low-floor vehicle body underframe structure and tramcar
CN110667629A (en) * 2019-10-25 2020-01-10 中铁轨道交通装备有限公司 End beam and lower part hinged mounting base structure of low-floor tramcar motor car
CN110667629B (en) * 2019-10-25 2021-01-01 中铁轨道交通装备有限公司 End beam and lower part hinged mounting base structure of low-floor tramcar motor car
CN110682931A (en) * 2019-10-28 2020-01-14 中铁轨道交通装备有限公司 Car body chassis and have its tram
CN110860770A (en) * 2019-11-29 2020-03-06 安徽雷尔伟交通装备有限公司 Vehicle body underframe assembly and welding process thereof
CN110860770B (en) * 2019-11-29 2022-05-10 安徽雷尔伟交通装备有限公司 Vehicle body underframe assembly and welding process thereof
CN112171095A (en) * 2020-09-24 2021-01-05 中车长春轨道客车股份有限公司 Shape and position deformation control welding method for underframe floor of motor train unit
CN112171095B (en) * 2020-09-24 2021-12-14 中车长春轨道客车股份有限公司 Shape and position deformation control welding method for underframe floor of motor train unit
CN112622966A (en) * 2020-12-04 2021-04-09 中车南京浦镇车辆有限公司 Vehicle bottom high longitudinal beam, vehicle body and rubber wheel train
CN112622966B (en) * 2020-12-04 2022-06-14 中车南京浦镇车辆有限公司 Vehicle bottom high longitudinal beam, vehicle body and rubber wheel train
CN113682336A (en) * 2021-08-17 2021-11-23 中车青岛四方机车车辆股份有限公司 Vehicle hinge device, vehicle chassis and vehicle

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