CN107738658B - 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 PDFInfo
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- CN107738658B CN107738658B CN201710886481.4A CN201710886481A CN107738658B CN 107738658 B CN107738658 B CN 107738658B CN 201710886481 A CN201710886481 A CN 201710886481A CN 107738658 B CN107738658 B CN 107738658B
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- vehicle body
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- floor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL 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
- B61F1/00—Underframes
- B61F1/06—Underframes specially adapted for locomotives or motor-driven railcars
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- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
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Abstract
The present invention relates to a kind of 100% low-floor tramcar vehicle body bottom frames, it is welded by two part groups, two parts are respectively the chassis front connecting with drivers' cab and the chassis rear portion positioned at steering framing wheel to overlying regions, chassis front includes front beam, the front side beam and main beam of two sides, at least two front longitudinal beams 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 board compositions, the both ends of floor side member, which are respectively welded, to be fixed on back end beam and main beam, the material at chassis front and chassis rear portion is stainless steel, bogie cover board composition is formed by stainless steel plate bending, hinged mounting base is welded on back end beam.The present invention has light-weight, the good advantage of strength and stiffness, and transmission force property is good, and the chassis rear portion in bogie region uses modularized design, can realize that structure is exchanged with the corresponding region of intermediate vehicle, improve the versatility of maintenance.
Description
Technical field
The invention belongs to technical field of rail traffic, in particular to a kind of 100% low-floor tramcar vehicle body bottom frame.
Background technique
100% low-floor tramcar is one of the important tool of modern city rail traffic, facilitates passenger to take with it,
The features such as organizing into groups multiplicity, flexible operation and existing bus platform and road surface resource-sharing is welcome by each city deeply.
Chassis is that one of the pith of 100% low-floor car body assumes responsibility for vehicle for the vehicle body bottom frame on bogie
The weight of body, and need for tractive force to be transmitted 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 is mainly designed using full carbon steel structure or aluminum alloy section structure.Full carbon steel vehicle
Body chassis intensity, good rigidity, but weight is excessive；Aluminium alloy extrusions vehicle body bottom frame lighter in weight, but rigidity is lower, in order to increase
Big bending stiffness prevents plate from generating unstability, it is necessary to increase plate thickness.In addition, the corrosion resistance of aluminum alloy materials is poor, need
Carry out anti-corrosion protection.
Summary of the invention
Present invention is primarily aimed at solving the above problems, provide a kind of 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 welded by two part groups, two parts point
The chassis front that Wei not be connect with drivers' cab and the chassis rear portion positioned at steering framing wheel to overlying regions；The chassis front includes
Front beam, two sides front side beam and main beam, the two sides of the front beam and main beam are weldingly fixed on the front side beam of two sides,
At least two front longitudinal beams are provided between the front beam and main beam, between the front longitudinal beam and front longitudinal beam 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 two sides, two floor side members and two groups
Bogie cover board composition, the two sides of the back end beam are weldingly fixed on the rear side bar of two sides, the both ends difference of the floor side member
Be weldingly fixed on back end beam and main beam, bogie cover board described in two groups composition be respectively welded be fixed on respective side it is described after
On stringer, rear side bar and front side beam, it is respectively set between the floor side member and between floor side member and rear side bar and/or front side beam
Needle beam after multiple；The material at the chassis front and chassis rear portion is stainless steel, and the bogie cover board composition is by stainless steel
Plate bending forms, and hinged mounting base is welded on the back end beam.
Further, two front longitudinal beams are set between the front beam and main beam, and two front longitudinal beams are in horizontal plane
Upper is in front wide and rear narrow oblique layout structure.
Further, the front beam and/or front longitudinal beam and/or main beam and/or preceding needle beam and/or rear needle beam are 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 floor side member is integrally in the arc that middle section is bent upwards along vehicle body longitudinal direction.
Further, the centre of the back end beam is provided with c-shaped opening, and the end insertion of the hinged mounting base is mounted on institute
It states in c-shaped opening and is welded to connect.
Further, the hinged mounting base is seperated structure, is made of preceding mounting base and rear mounting base butt welding,
Multiple cant boards are welded between the preceding mounting base and rear mounting base, are provided with mounting hole in the rear mounting base.
Further, the preceding mounting base 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 board composition includes cover board stringer composition and the first cover board for installing seat and the
Two cover boards, first cover board are symmetrical arranged two along vehicle body longitudinal direction, and second cover board is mounted on two the first cover boards
Centre, cover board stringer composition is fixedly connected with side wall, first cover board, the second cover board side be weldingly fixed on lid
On plate stringer composition.
Further, it is provided on the upper surface of second cover board in netted panting beam.
Further, the cover board stringer composition by stringer under cover board upper longitudinal beam, cover board and is arranged in the cover board upper longitudinal beam
And multiple first vertical beams composition under cover board between stringer, under the cover board rear and front end of stringer pass through respectively 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 the floor side member is provided with lateral backstop mounting base,
The opposite other side is provided with lateral damper mounting base, is provided with drawing pull bar mounting base on the lower surface thereof.
Further, the hinged mounting base is made of carbon steel material.
In conclusion a kind of 100% low-floor tramcar vehicle body bottom frame provided by the invention, whole to use high intensity not
Become rusty Steel material, and structure is light sheet bending part, and the partial structurtes such as mounting base use carbon steel material, has light-weight, strength and stiffness
Good advantage, and transmission force property is good.In addition, the chassis rear portion in bogie region uses modularized design, Ke Yiyu
The corresponding region of intermediate vehicle realizes that structure is exchanged, the versatility for simplifying production technology, improving maintenance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of vehicle body bottom frame of the present invention；
Fig. 2 is the backside structure figure of Fig. 1；
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 hinged mounting base structure chart of the invention.
As shown in Figures 1 to 5, chassis front 1, chassis rear portion 2, front beam 3, front side beam 4, main beam 5, front longitudinal beam 6 are preceding
Needle beam 7, vertical plate 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 board composition 16, needle beam 17 after first, needle beam 18 after second, after third
Needle beam 19, needle beam 20 after the 4th, damper mounting base 21, hinged mounting base 22, c-shaped opening 23, preceding mounting base 24 are rear to pacify
Fill seat 25, cant board 26, mounting hole 27, opening 28, cover board stringer composition 29, stringer 29a under cover board, the first cover board 30, upper cover
Plate 30a, first end plate 30b, the second end plate 30c, side plate 30d, the second cover board 31, cover board 31a, end plate 31b, side plate 31c, bottom plate
31d, the first vertical beam 32, the second vertical beam 33, third vertical beam 34, stiffening plate 35, panting beam 36, lateral backstop mounting base 37, laterally
Damper mounting base 38, drawing pull bar mounting base 39.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
As depicted in figs. 1 and 2, a kind of 100% low-floor tramcar vehicle body bottom frame provided by the invention, front end and department
Machine room chassis connects, hinged between the vehicle body bottom frame that rear end passes through adjacent compartment.The chassis is welded by two part groups, and two
A part is respectively the chassis front 1 connecting with drivers' cab and the chassis rear portion 2 positioned at steering framing wheel to overlying regions.In order to
Under the premise of guaranteeing chassis overall structural strength and rigidity, the total weight of chassis is reduced, the light-weighted requirement of vehicle, this reality are met
It applies in example, the material at chassis front 1 and chassis rear portion 2 preferably uses stainless steel material.
As shown in Fig. 1 and Fig. 1, chassis front 1 includes front beam 3, is located at cross-car (referring to width of the carbody direction) two 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 two sides of front beam 3 and main beam 5 are respectively welded on the front side beam 4 for being fixed on two sides, preceding
The centre of end carriage 3 and main beam 5 is provided at least two front longitudinal beams 6, between adjacent front longitudinal beam 6 and front longitudinal beam 6 and front
Multiple preceding needle beams 7 are provided between beam 4, to further increase the overall structural strength and rigidity of chassis front 1.Chassis
The whole structure in frame in front 1, front beam 3, front side beam 4, main beam 5, front longitudinal beam 6 longitudinally (refer to length over ends of body side with car body
To) be symmetrical arranged centered on center line.
In the present embodiment, under the premise of guaranteeing the overall structural strength and rigidity of chassis front 1, in order to mitigate weight,
Two front longitudinal beams 6 are only set between front beam 3 and main beam 5, and the rear and front end of front longitudinal beam 6, which is respectively welded, is connected to front beam
3 on main beam 5, and two front longitudinal beams 6 are preferably using being in the horizontal plane front wide and rear narrow oblique layout structure, i.e., before two
Width between 3 tie point of stringer 6 and front beam is greater than the width between 5 tie point of main beam, and this structure can be not
Under the premise of increasing by 1 total weight of chassis front, keep the power transmission effect of car body front end more smooth, improves power transmission performance.
In the present embodiment, front side beam 4 uses bar section of stainless steel structure, has profile cavity among it, and section is inverted L shape,
To improve the structural strength and rigidity of front side beam 4, welding stress is reduced.Front beam 3, main beam 5, front longitudinal beam 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
Interior welds have multiple vertical plates 8, and top, side and the bottom of vertical plate 8 are welded to connect with the inner surface of front beam 3, with enhancing
The structural strength and rigidity of front beam 3.The position that the upper hem of front beam 3 is connect with two 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 for increasing bonding strength.Multiple pads are also uniformly installed in the front surface of front beam 3
Plate 9, backing plate 9 are mounted on front beam 3 by bolt.Main beam 5 is identical as front beam 3, for U-shaped bending open forwards
Part.Front longitudinal beam 6 is similarly the bending part that section is U-shaped, and front longitudinal beam 6 is open to ipsilateral 4 direction of front side beam, and the two of front longitudinal beam 6
Insertion front beam 3 is connected with the interior welds of main beam 5 respectively at end.Between two front longitudinal beams 6, each front longitudinal beam 6 with it is ipsilateral
Front side beam 4 between be respectively provided with there are two preceding needle beam 7, preceding needle beam 7 is also bending part, and section can be U-shaped, can also be with
For Z shape, be welded to connect between preceding needle beam 7 and front longitudinal beam 6 and front side beam 4, the junction of preceding needle beam 7 and front longitudinal beam 6 also
It can be welded with L-shaped connector 11, to increase the bonding strength between preceding needle beam 7 and front longitudinal beam 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 on main beam 5, preceding needle beam 7, are further mitigated under the premise of guaranteeing structural strength and rigidity
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, rear vertical positioned at cross-car two sides
Beam 15 and two groups of bogie cover board compositions 16.The two sides of back end beam 13 are weldingly fixed on the rear side bar 14 of two sides, in order to improve
In the present embodiment, two floor side members 15, the preceding thing two of two floor side members 15 is arranged in the transmission force property of chassis 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 board compositions 16 are respectively welded and are fixed on respective side
Floor side member 15, be compartment gang way floor, the ground with chassis front 1 between two floor side members 15 on rear side bar 14 and front side beam 4
Plate is concordant.14, two floor side members 15 of side bar and two groups of bogie cover board compositions 16 longitudinally (are referred to after back end beam 13, two with car body
Vehicle body longitudinal direction) it is symmetrical arranged centered on center line.The part at the chassis rear portion 2 in bogie region is set using modularization
Meter can realize that structure is exchanged with the corresponding region of intermediate vehicle, the versatility for simplifying production technology, improving 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 longitudinal beams 6, to protect
Demonstrate,prove the transfer performance of power.Floor side member 15 is integrally in the arc that middle section is bent upwards along vehicle body longitudinal direction, to meet lower part
The space requirement of bogie.In order to improve the structural strength and transmission force property of floor side member 15, the section of floor side member 15 is preferably used
" II " shape 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
The end of 15c is welded to connect with main beam 5 and back end beam 13 respectively, and preferably, and upper plate 15a and lower plate 15b distinguish at both ends
It is improved in 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
The bonding strength of floor side member 15, further increases transmission force property.
Side bar 14 is identical as the structure of front side beam 4 afterwards, is all made of bar section of stainless steel structure, has profile cavity among it,
Section is inverted L-shaped, to improve the structural strength and rigidity of front side beam 4, reduces welding stress.
Multiple rear small cross are respectively set between two floor side members 15 and between floor side member 15 and rear side bar 14 and front side beam 4
Beam, to further increase the overall structural strength and rigidity at chassis rear portion 2.It is welded between floor side member 15 and ipsilateral front side beam 4
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 ipsilateral rear side bar 14
Crossbeam 18, welding is there are four rear needle beam between two floor side members 15, the needle beam 19 after the third of front-end and back-end
Two sides are respectively welded on the side surface of floor side member 15 of two sides, and needle beam 20 is welded on two sides after being located in the middle two the 4th
Floor side member 15 lower surface on, be welded with damper mounting base 21 on needle beam 20 after the 4th, needle beam 20 welds after the 4th
The difference in height for being bent upwards and being formed among floor side member 15 is connect on the lower surface for being fixed on floor side member 15 while can also offset, so that two
Floor between a floor side member 15 is concordant.Needle beam 19 is all made of not after needle beam 18, third 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 shape stainless steel plates and intermediate connecting plate welding after 4th
It forms, with the structural strength and rigidity of needle beam 20 after further increasing the 4th.Needle beam 20 is connect with floor side member 15 after 4th
Place can also weld stiffener plate 10 to further 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 and transmission force property of back end beam 13, while increasing between hinged mounting base 22
Bonding strength.
The centre of back end beam 13 is provided with a c-shaped opening 23, the front end insertion of hinged mounting base 22 is mounted on C-shaped
It in opening 23 and connects, the EDGE CONTACT of c-shaped opening 23 and hinged mounting base 22 cooperates, and is welded using border and realizes connection.Hinge
It is whole trapezoidal to connect mounting base 22, the end portion width connecting with c-shaped opening 23 is greater than the end portion width of the other end, to increase hinge
The bonding area between mounting base 22 and back end beam 13 is connect, bonding strength is increased.
As shown in Figure 3 and Figure 5, the assembling of hinged mounting base 22 for convenience, hinged mounting base 22 use seperated structure,
It is made of preceding mounting base 24 and 25 butt welding of rear mounting base, two sides is welded between preceding mounting base 24 and rear mounting base 25
Vertical plate 26 is provided with the mounting hole 27 for installing articulated mounting in rear mounting base 25.In the intermediate tool of hinged mounting base 22
There is opening 28 up and down, while mitigating weight, facilitates installation articulated mounting, two cant boards 26 set up separately in opening 28
Two sides.
Preceding mounting base 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 hinged mounting base 22 for convenience, preceding mounting base 24 is by upper
Lower two " T " shape structures part butt welding forms, and the vertical section of rear mounting base 25 is substantially U-shaped, preceding mounting base 24 and rear peace
Dress seat 25 is provided with welding groove at the position of docking.
In the present embodiment, hinged mounting base 22 is made of carbon steel material, to improve the overall structure of hinged mounting base 22
Strength and stiffness.The two " T " shape structure parts and rear mounting base 25 of preceding mounting base 24 are respectively adopted cast carbon steel and form, and guarantee strong
Degree and raising power transmission performance.Hinged 22 simple process of mounting base has good stiffness and strength, meets bearing requirements
And requirements of installation space.
Bogie cover board composition 16 is to provide suitable working space to bogie composition, while being the seat of upper part
Chair installation provides enough strength and stiffness.As depicted in figs. 1 and 2, every group of bogie cover board 16 structures of composition are identical, include
Cover board stringer composition 29 and the first cover board 30 and the second cover board 31 for installing seat.First cover board 30 is along length over ends of body side
To being symmetrical arranged two, cross seat is installed on the first cover board 30, the second cover board 31 is mounted on the centre of two the first cover boards 30,
Second cover board 31 is installed higher than the first cover board 30, and longitudinal seat is installed on the second cover board 31.Cover board stringer composition 29 is used for the bottom of
Frame is connected with vehicle body side wall, the first cover board 30, the second cover board 31 side be weldingly fixed on cover board stringer composition 29 on.
Cover board stringer composition 29 is made of stringer 29a under cover board upper longitudinal beam (not shown) and cover board, cover board upper longitudinal beam
It is arranged in parallel with stringer 29a under cover board, is provided with multiple first vertical beams 32 between stringer 29a under stringer and cover board on the cover board,
The rear and front end of stringer 29a passes through the second vertical beam 33 respectively and is welded to connect with front side beam 4 and rear side bar 14 under cover board.
Stringer 29a is formed by stainless steel plate bending under cover board upper longitudinal beam and cover board, and the section of cover board upper longitudinal beam is inverted L-shaped,
The section of stringer 29a is U-shaped under cover board.The section of first vertical beam 32 is U-shaped.While mitigating weight, cover board can be improved
The structural strength and rigidity of stringer composition 29.
First cover board 30 is made 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 be integrally in it is step-like, to match
Close the installation of each component of bogie of lower section.The bottom of side plate 30d is weldingly fixed on the upper plate 15a of floor side member 15, side plate 30d
Rear and front end be respectively welded with third vertical beam 34, the bottom of third vertical beam 34 is also welded on the upper plate 15a of floor side member 15.First
Another side of end plate 30b and the second vertical beam 33 are welded to connect, and the side of upper cover plate 30a is welded to connect the stringer 29a under cover board
On, meet seat bearing requirements.
Second cover board 31 is made of cover board 31a, forward and backward end plate 31b, side plate 31c and bottom plate 31d, cover board 31a, forward and backward
End plate 31b, side plate 31c, bottom plate 31d formed by stainless steel plate bending.The bottom of forward and backward end plate 31b and the first cover board 30
Upper cover plate 30a be welded to connect, the side of forward and backward end plate 31b and the first vertical beam 32 are welded to connect, forward and backward end plate 31b's
Stiffening plate 35 is also welded between the other side and upper cover plate 30a.The side of cover board 31a and the first vertical beam 32 and cover board upper longitudinal beam are welded
It connects in succession.Side plate 31c is T shape, 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
Stringer 15 is welded to connect, and bottom plate 31d is concordant with gang way floor.It is additionally provided on the upper surface of cover board 31a by crossbeam and stringer
Composition is in netted panting beam 36, improves the vertical stiffness of the second cover board 31, meets seat bearing requirements.
The side towards car body longitudinal centre line of floor side member 15 is provided with lateral backstop mounting base 37, opposite one
Side is provided with lateral damper mounting base 38, is provided with drawing pull bar mounting base 39 on the lower surface thereof.
Undercarriage structure of the invention integrally uses high-strength stainless steel material, and structure is light sheet bending part, not only light-weight,
And intensity, good rigidity, transmission force property are good.The Undercarriage structure can guarantee that all floor levels of car body area are not higher than
350mm, passability are strong.
As described above, the plan content in conjunction with given by attached drawing, can derive similar technical solution.But it is all not take off
Content from technical solution of the present invention, according to the technical essence of the invention it is to the above embodiments it is any it is simple modification, etc.
With variation and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (14)
1. a kind of 100% low-floor tramcar vehicle body bottom frame, it is characterised in that: the chassis is welded by two part groups,
Two parts are respectively the chassis front connecting with drivers' cab and the chassis rear portion positioned at steering framing wheel to overlying regions；
The chassis front includes the front side beam and main beam of front beam, two sides, the two sides welding of the front beam and main beam
It is fixed on the front side beam of two sides, at least two front longitudinal beams is provided between the front beam and main beam, described preceding vertical
Multiple preceding needle beams are provided between beam and between front longitudinal beam and front side beam；
The chassis rear portion includes back end beam, the rear side bar of two sides, two floor side members and two groups of bogie cover board compositions, after described
The two sides of end carriage are weldingly fixed on the rear side bar of two sides, and the both ends of the floor side member, which are respectively welded, is fixed on back end beam and main cross
Liang Shang, the composition of bogie cover board described in two groups are respectively welded on the floor side member, rear side bar and front side beam for being fixed on respective side,
Multiple rear needle beams are respectively set between the floor side member and between floor side member and rear side bar and/or front side beam；
The bogie cover board composition includes cover board stringer composition and the first cover board and the second cover board for installing seat, described
Cover board stringer composition be fixedly connected with side wall, first cover board, the second cover board side be weldingly fixed on cover board stringer form
On, cover board stringer composition is by stringer under cover board upper longitudinal beam, cover board and setting under the cover board upper longitudinal beam and cover board between stringer
Multiple first vertical beams composition, the rear and front end of stringer passes through the second vertical beam and front side beam respectively under the cover board and rear side bar welds
It connects in succession；
The material at the chassis front and chassis rear portion is stainless steel, bogie cover board composition by stainless steel plate bending and
At welding hinged mounting base on the back end beam.
2. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: before described
Two front longitudinal beams are set between end carriage and main beam, and two front longitudinal beams are in front wide and rear narrow oblique layout knot in the horizontal plane
Structure.
3. a kind of 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 beam and/or main beam and/or preceding needle beam and/or rear needle beam are stainless steel plate bending structure.
4. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: 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 100% low-floor tramcar vehicle body bottom frame according to claim 4, it is characterised in that: the upper plate
It at both ends is in the "eight" shape extended out with lower plate.
6. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: vertical after described
Beam is integrally in the arc that middle section is bent upwards along vehicle body longitudinal direction.
7. a kind of 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 hinged mounting base, which is mounted in the c-shaped opening, to be welded to connect.
8. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 7, it is characterised in that: described hinged
Mounting base is seperated structure, is made of preceding mounting base and rear mounting base butt welding, in the preceding mounting base and rear mounting base
Between be welded with multiple cant boards, be provided with mounting hole in mounting base after described.
9. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 8, it is characterised in that: peace before described
Dress seat is formed by upper and lower two " T " shape structures part butt welding.
10. a kind of 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 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: described first
Cover board is symmetrical arranged two along vehicle body longitudinal direction, and second cover board is mounted on the centre of two the first cover boards.
12. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: described
It is provided on the upper surface of two cover boards in netted panting beam.
13. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: after described
The side towards car body longitudinal centre line of stringer is provided with lateral backstop mounting base, is provided in the opposite other side and laterally subtracts
Vibration device mounting base, is provided with drawing pull bar mounting base on the lower surface thereof.
14. a kind of 100% low-floor tramcar vehicle body bottom frame according to claim 1, it is characterised in that: described hinged
Mounting base is made of carbon steel material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710886481.4A CN107738658B (en) | 2017-09-27 | 2017-09-27 | A kind of 100% low-floor tramcar vehicle body bottom frame |
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|---|---|---|---|
| CN201710886481.4A CN107738658B (en) | 2017-09-27 | 2017-09-27 | A kind of 100% low-floor tramcar vehicle body bottom frame |
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| CN107738658B true CN107738658B (en) | 2019-04-16 |
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|---|---|---|---|---|
| CN109178009B (en) * | 2018-11-08 | 2020-07-31 | 中车株洲电力机车有限公司 | 100% low-floor rail vehicle underframe and 100% low-floor rail vehicle |
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