CN105015571A - Chassis of low-floor trailer body - Google Patents
Chassis of low-floor trailer body Download PDFInfo
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- CN105015571A CN105015571A CN201510517413.1A CN201510517413A CN105015571A CN 105015571 A CN105015571 A CN 105015571A CN 201510517413 A CN201510517413 A CN 201510517413A CN 105015571 A CN105015571 A CN 105015571A
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- longeron
- sleeper beam
- cover plate
- plate
- upper cover
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Abstract
The invention discloses a chassis of a low-floor trailer body. The chassis comprises a bolster, longitudinal beams, side beams and seat support beams, wherein the bolster transversely penetrates through the whole trailer body; the bolster comprises a bolster lower cover plate, a bolster upper cover plate, a bolster side plate, a bolster vertical plate and a bolster support plate; the longitudinal beams are connected to two sides of the middle of the bolster respectively; each longitudinal beam comprises an end beam and a longitudinal beam body and further comprises a longitudinal beam lower cover plate, a longitudinal beam upper cover plate, an end plate, an end cover and a longitudinal beam side plate; the longitudinal beam lower cover plate extends horizontally at the end beam, then obliquely and upwards extends and finally horizontally extends; the longitudinal beam upper cover plate extends horizontally at the end beam, then obliquely and upwards extends and finally horizontally extends; a horizontal plane is taken as a standard, the angle between the obliquely and upwards extending longitudinal beam upper cover plate and the horizontal plane is smaller than the angle between the obliquely and upwards extending longitudinal beam lower cover plate and the horizontal plane, and the cross sections of the obliquely and upwards extending sections of the longitudinal beam upper cover plate and the longitudinal beam lower cover plate are gradually reduced. The chassis structure is light in weight, good in strength and stiffness and most importantly good in force transmission performance.
Description
Technical field
The present invention relates to low floor trailer body, especially low floor trailer body underframe.
Background technology
Trailer body underframe is one of pith of trailer, for the trailer body underframe on non-powered bogie truck, it assume responsibility for the weight of car body, and need tractive force to be delivered on non-powered bogie truck, therefore, require that trailer body underframe has certain strength and stiffness, and need good transmission force property.
Be the CN104015745A applying date be 2014.6.27 publication date in China Patent Publication No. be in the patent documentation of 2014.9.3, disclose a kind of 100% modern city tramway train vehicle body bottom frame, and specifically disclose, comprise sleeper beam, longeron, the first end carriage, the second end carriage, first side beam, second side beam, described sleeper beam is welded into closed " bow " word box, the box-structure that described longitudinal beam welding becomes to close, through whole car body.Described sleeper beam, longeron, end carriage, side girders are welded together to form " well " glyph framework structure.Underframe all adopts high strength carbon Steel material to be welded, and is welded into underframe after each parts weld separately, and underframe and car body miscellaneous part pass through riveting.The vehicle body bottom frame of this structure, although have more advantage, but, (1) for sleeper beam, two ends vertical stressed less, if the sleeper beam all adopting box-structure, not only bring trouble to manufacture, and add the weight of whole vehicle body bottom frame, thus to towability be increased, increase the consumption of energy; (2) because longeron runs through whole car body, and the longitudinal length of vehicle body bottom frame is far longer than lateral length, and therefore, whole longeron easily occurs bending and deformation when bearing body or lifting; (3) transmission force property of the vehicle body bottom frame of said structure is bad.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of low floor trailer body underframe.
The technical scheme solved the problems of the technologies described above is: a kind of low floor trailer body underframe, comprises sleeper beam, longeron, side bar and Seat support beam;
The whole car body of sleeper beam lateral direction penetrating; Sleeper beam comprises sleeper beam lower cover, sleeper beam upper cover plate, sleeper beam side plate, sleeper beam riser and sleeper beam back plate; Sleeper beam upper cover plate is positioned at the top of sleeper beam lower cover, described sleeper beam riser is upwards bent to form at the two ends of sleeper beam lower cover, sleeper beam riser is connected with sleeper beam upper cover plate, outside sleeper beam back plate is connected with in the upper end of each sleeper beam riser, described sleeper beam side plate is connected in the both sides of sleeper beam lower cover and sleeper beam upper cover plate, sleeper beam side plate extends to the outer end of sleeper beam back plate and is connected with sleeper beam riser and sleeper beam back plate, in the position of sleeper beam back plate, sleeper beam side plate is higher than sleeper beam back plate; Sleeper beam gusset is provided with between sleeper beam lower cover and sleeper beam upper cover plate;
Longeron is connected in the both sides, middle part of sleeper beam; Described longeron comprises end carriage and longeron body, and end carriage and longeron body are structure as a whole, and longeron is T font; Described longeron comprises longeron lower cover, longeron upper cover plate, end plate, end cap and longeron side plate; Longeron lower cover is T font, and from end to sleeper beam direction, longeron lower cover extends then horizontal-extending obliquely after end carriage place horizontal-extending; Longeron upper cover plate is T font, and from end to sleeper beam direction, longeron upper cover plate extends then horizontal-extending obliquely after end carriage place horizontal-extending; Take horizontal surface as benchmark, the angle that longeron upper cover plate extends obliquely is less than the angle that longeron lower cover extends obliquely, and longeron upper cover plate and longeron lower cover are reduced gradually at the cross-sectional plane of extension obliquely; End plate connection is in longeron upper cover plate and the longeron lower cover side away from sleeper beam; End cap is connected to and is positioned at the longeron upper cover plate of end carriage and the two ends of longeron lower cover; Longeron side plate is connected in the both sides of the inner side of end carriage and longeron body; Longeron gusset is connected with between longeron upper cover plate and longeron lower cover;
Be respectively equipped with side bar in the both sides of vehicle body bottom frame, side bar is connected with sleeper beam, longeron and Seat support beam;
Seat support beam is connected with sleeper beam, longeron and side bar.
Said structure, the middle part of sleeper beam is by sleeper beam upper cover plate, the box-structure of sleeper beam lower cover and sleeper beam side plate composition, for carrying larger transverse direction, longitudinal direction and distortion power, make stressed evenly, not easily occur that stress is concentrated, structure is more stable, not easily occur that local fatigue destroys, and for vehicle body bottom frame of the present invention, the vertical power that both sides are subject to is less, therefore, only be designed to platy structure, like this, the requirement of use can not only be reached, and the weight of whole vehicle body bottom frame can be alleviated, bring conveniently to manufacture, reduce manufacturing cost, reduce tractive force, reduce the consumption of energy.For longeron, be arranged to two longerons, longeron, when bearing body or lifting, flexural deformation is less likely to occur, and structure is more stable.For longeron body and end carriage, adopt integral structure, then longeron lower cover and longeron upper cover plate are structure as a whole, like this, the good rigidity of whole vehicle body bottom frame, the transmission of power is more smoothly; In addition, horizontal-extending after extending obliquely, the reduction gradually of its cross section, when have employed continuous print longeron lower cover and continuous print longeron upper cover plate, can avoid the phenomenon occurring that in bending place stress is concentrated.
Further, sleeper beam lower cover is provided with first hollow out of more than two, sleeper beam upper cover plate is provided with second hollow out of more than two; Sleeper beam back plate is provided with the 3rd hollow out of more than two, and this structure can alleviate the weight of sleeper beam, and can not have influence on the strength and stiffness of sleeper beam.
Further, the position that sleeper beam side plate corresponds to sleeper beam riser forms transition arc and lower transition arc, and this structure can reduce the phenomenon that stress is concentrated, and improves the strength and stiffness of sleeper beam.
Further, between sleeper beam riser and sleeper beam back plate, be welded with gusset, this structure further increases the strength and stiffness of sleeper beam on the basis reducing sleeper beam weight.
Further, longeron lower cover is provided with the 4th hollow out of more than two, longeron upper cover plate is provided with the 5th hollow out of more than two, this structure compared with the weight of stringer, and can not have influence on the strength and stiffness of longeron.
Further, longeron lower cover outwards forms the first salient away from the middle part of the side of sleeper beam, longeron upper cover plate outwards forms the second salient away from the middle part of the side of sleeper beam, be connected with articulated slab between first salient and the second salient, the first salient, the second salient and articulated slab form hinged seat.This structure, hinged seat and longeron form integrative-structure, can improve the intensity of hinged seat, in addition, when power is delivered to after on hinged seat, because it is structure as a whole, therefore, power through hinged seat can be delivered on longeron smoothly, there will not be the phenomenon of being interrupted power transmission, makes capable transmission performance good.
Further, end cap is provided with hole for hoist, to facilitate lifting, and owing to have employed sleeper beam of the present invention and girder work, especially longeron body and end carriage is designed to integrative-structure, when lifting, distortion is less likely to occur at the middle part of vehicle body bottom frame.
Further, described side bar comprises side bar body and is connected to the strength beam at side bar body two ends, and described strength beam comprises the first vertical beam, the second vertical beam, the first longeron, the second longeron, first crossbeam and the first diagonal brace; The lower end of the first vertical beam is connected with end carriage, and the upper end of the first vertical beam is connected with side bar body; The lower end of the second vertical beam is connected with the first longeron, and the upper end of the second vertical beam is connected with side bar body; One end of first longeron is connected with end carriage, and the other end of the first longeron is connected with first crossbeam; One end of second longeron is connected with end carriage, and the other end of the second longeron is connected with first crossbeam; One end of first crossbeam is connected with longeron body; First diagonal brace is connected between the first vertical beam and the second vertical beam.The side bar intensity of this structure is good, is not easy distortion.
Further, Seat support beam forms framed structure by many 3rd vertical beams, many 3rd longerons and Duo Gen second cross beam, and wherein, the 3rd vertical beam near sleeper beam is platy structure, be connected with longeron body near the lower end of the 3rd vertical beam of sleeper beam, and there is transition arc portion.In the present invention because a part for longeron body tilts upward extension, after end carriage is stressed, horizontal component of force and moment of flexure can be formed in the longeron horizontal-extending section near sleeper beam, therefore, longeron horizontal-extending section near sleeper beam easily deforms, and be connected with longeron body due to the lower end of the 3rd vertical beam near sleeper beam, therefore, the part be connected with longeron body at the 3rd vertical beam deforms, easily cause the phenomenon that stress is concentrated, after being provided with transition arc portion, then can solve the problems of the technologies described above.
Further, middle base is welded with in the central bottom of sleeper beam; A longeron and be positioned in the horizontal-extending section near sleeper beam and be welded with traction Connection Block wherein; Be positioned in the horizontal-extending section near sleeper beam be welded with horizontal shock-absorbing Connection Block at another longeron.For middle base, traction Connection Block and horizontal shock-absorbing Connection Block, the stressed difference of this three, middle base can not be stressed when trailer running state is good, the stressed meeting of traction Connection Block is very large, horizontal shock-absorbing Connection Block stressed relatively little, like this, is separated setting by three, then can not be affected each other, make the operation of trailer more stable.
Accompanying drawing explanation
Fig. 1 is the block diagram of low floor trailer body underframe.
Fig. 2 is low floor trailer body underframe birds-eye view.
Fig. 3 is the side schematic view of low floor trailer body underframe.
Fig. 4 is A-A cutaway view in Fig. 1.
Fig. 5 is B-B cutaway view in Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
As shown in Figures 1 to 5, low floor trailer body underframe comprises sleeper beam 1, longeron 2, side bar 3, Seat support beam 4, middle base 5, traction Connection Block 6 and horizontal shock-absorbing Connection Block 7.
As shown in Figure 1, Figure 2 with shown in Fig. 5, the whole car body of sleeper beam 1 lateral direction penetrating; Sleeper beam 1 comprises sleeper beam lower cover 11, sleeper beam upper cover plate 12, sleeper beam side plate 13, sleeper beam riser 14 and sleeper beam back plate 15.
Sleeper beam upper cover plate 12 is positioned at the top of sleeper beam lower cover 11; Sleeper beam lower cover 11 is provided with first hollow out 111 of more than two, sleeper beam upper cover plate 12 is provided with second hollow out 121 of more than two, to alleviate the weight of sleeper beam 1, and the strength and stiffness of sleeper beam can not be affected; Between sleeper beam lower cover 11 and sleeper beam upper cover plate 12, be provided with sleeper beam gusset 16, sleeper beam gusset 16 is made up of horizontal and vertical gusset; Upwards be bent to form described sleeper beam riser 14 at the two ends of sleeper beam lower cover 11, sleeper beam riser 14 is connected with sleeper beam upper cover plate 12, is connected with outside sleeper beam back plate 15 in the upper end of each sleeper beam riser 14; Described sleeper beam side plate 13 is connected in the both sides of sleeper beam lower cover 11 and sleeper beam upper cover plate 12, sleeper beam side plate 13 extends to the outer end of sleeper beam back plate and is connected with sleeper beam riser 14 and sleeper beam back plate 15, the position that sleeper beam side plate 13 corresponds to sleeper beam riser 14 forms transition arc 131 and lower transition arc 132, make the cross section of sleeper beam side plate 13 substantially equal, like this, reduce the phenomenon that stress is concentrated, improve the strength and stiffness of sleeper beam 1, in the position of sleeper beam back plate 15, sleeper beam side plate is higher than sleeper beam back plate.Sleeper beam back plate 15 is provided with the 3rd hollow out 151 of more than two.Described sleeper beam lower cover 11, sleeper beam upper cover plate 12, sleeper beam side plate 13 forms box-structure, be mainly used in carrying larger transverse direction, longitudinal direction and distortion power, make stressed evenly, not easily occur that stress is concentrated, structure is more stable, not easily occur that local fatigue destroys, and for vehicle body bottom frame of the present invention, the vertical power that both sides are subject to is less, therefore, only be designed to platy structure, like this, the requirement of use can not only be reached, and the weight of whole vehicle body bottom frame can be alleviated, bring conveniently to manufacture, reduce manufacturing cost, reduce tractive force, reduce the consumption of energy.
Between sleeper beam riser 14 and sleeper beam back plate 15, be welded with gusset 17, the basis reducing sleeper beam weight further increases the strength and stiffness of sleeper beam.
As shown in Figures 1 to 5, be connected to longeron 2 in the both sides, middle part of sleeper beam 1, be namely welded with longeron 2 respectively in the both sides of sleeper beam 1.Described longeron 2 comprises end carriage 201 and longeron body 202, and end carriage 201 and longeron body 202 are structure as a whole, and longeron 2 is in T font.
Described longeron 2 comprises longeron lower cover 21, longeron upper cover plate 22, end plate 23, end cap 24 and longeron side plate 25; Longeron lower cover 21 is in T font, from end to sleeper beam direction, longeron lower cover 21 extends then horizontal-extending obliquely after end carriage place horizontal-extending, horizontal extension near sleeper beam 1 is divided into horizontal-extending section, longeron lower cover 21 is provided with the 4th hollow out 211 of more than two, to alleviate the weight of longeron.Longeron upper cover plate 22 is in T font, and from end to sleeper beam direction, longeron upper cover plate 22 extends then horizontal-extending obliquely after end carriage place horizontal-extending, and the horizontal extension near sleeper beam 1 is divided into horizontal-extending section; Longeron upper cover plate 22 is provided with the 5th hollow out 221 of more than two, to alleviate the weight of longeron; Take horizontal surface as benchmark, the angle that longeron upper cover plate 22 extends obliquely is less than the angle that longeron lower cover 21 extends obliquely, and longeron upper cover plate 22 and longeron lower cover 21 are reduced gradually at the cross-sectional plane of extension obliquely.Between longeron lower cover 21 and longeron upper cover plate 22, be welded with longeron gusset 26, this longeron gusset 26 comprises horizontal and vertical gusset, to improve the strength and stiffness of longeron.
Longeron lower cover 21 outwards forms the first salient 28 away from the middle part of the side of sleeper beam, longeron upper cover plate 22 outwards forms the second salient 29 away from the middle part of the side of sleeper beam, articulated slab 210 is connected with between first salient 28 and the second salient 29, first salient 28, second salient 29 and articulated slab 210 form hinged seat, the convenient car body connecting other, and hinged seat and longeron 2 form integrative-structure, the intensity of hinged seat can be improved, in addition, when power is delivered to after on hinged seat, because it is structure as a whole, therefore, power through hinged seat can be delivered on longeron 2 smoothly, there will not be the phenomenon of being interrupted power transmission, make capable transmission performance good.
End plate 23 is connected to longeron upper cover plate 22 and the side of longeron lower cover 21 away from sleeper beam 1, and end plate 23 is positioned at the two ends of articulated slab 210 simultaneously.End cap 24 is connected to and is positioned at the longeron upper cover plate of end carriage 201 and the two ends of longeron lower cover; End cap 24 is provided with hole for hoist 241, to facilitate lifting, and owing to have employed sleeper beam 1 of the present invention and longeron 2 structure, especially longeron body and end carriage is designed to integrative-structure, when lifting, distortion is less likely to occur at the middle part of vehicle body bottom frame.
Longeron side plate 25 is connected in the both sides of the inner side of end carriage 201 and longeron body 202; The inner side of above-mentioned described end carriage 201 refers to the side of end carriage near sleeper beam 1, because longeron 2 one-tenth is T-shaped, longeron body 202 is substantially at a right angle with end carriage 201, therefore, longeron side plate 25 can bend in the junction of longeron body 202 with end carriage 201, and the longeron side plate being namely positioned at side is an integral structure.
As shown in Figures 1 to 5, described side bar 3 comprises side bar body 31 and is connected to the strength beam at side bar body two ends, and described strength beam comprises the first vertical beam 321, second vertical beam 322, first longeron 323, second longeron 324, first crossbeam 325 and the first diagonal brace 326; The lower end of the first vertical beam 321 is connected with end carriage 201, and the upper end of the first vertical beam 321 is connected with side bar body 31; The lower end of the second vertical beam 322 is connected with the first longeron 323, and the upper end of the second vertical beam 322 is connected with side bar body 202; One end of first longeron 323 is connected with end carriage 201, and the other end of the first longeron 323 is connected with first crossbeam 325; One end of second longeron 324 is connected with end carriage 201, and the other end of the second longeron 324 is connected with first crossbeam 325; One end of first crossbeam 325 is connected with longeron body 202; First diagonal brace 326 is connected between the first vertical beam 321 and the second vertical beam 322.The side bar intensity of this structure is good, is not easy distortion.
As shown in Figures 1 to 5, Seat support beam 4 forms framed structure by many 3rd vertical beams 41, many 3rd longerons 42 and Duo Gen second cross beam 43, wherein, the 3rd vertical beam near sleeper beam is platy structure, be connected with longeron body near the lower end of the 3rd vertical beam of sleeper beam, and there is transition arc portion 401.Because a part for longeron body 202 tilts upward extension, after end carriage 201 is stressed, horizontal component of force and moment of flexure can be formed in the longeron horizontal-extending section near sleeper beam 1, therefore, longeron horizontal-extending section near sleeper beam 1 easily deforms, and be connected with longeron body due to the lower end of the 3rd vertical beam near sleeper beam, therefore, the part be connected with longeron body at the 3rd vertical beam deforms, easily cause the phenomenon that stress is concentrated, after being provided with transition arc portion, then can solve the problems of the technologies described above.
Middle base 5 is welded with in the central bottom of sleeper beam lower cover 11; A longeron and be positioned in the horizontal-extending section near sleeper beam and be welded with traction Connection Block 6 wherein; Be positioned in the horizontal-extending section near sleeper beam be welded with horizontal shock-absorbing Connection Block 7 at another longeron.For middle base 5, traction Connection Block 6 and horizontal shock-absorbing Connection Block 7, the stressed difference of this three, middle base 5 can not be stressed when trailer running state is good, the stressed meeting of traction Connection Block 6 is very large, horizontal shock-absorbing Connection Block 7 stressed relatively little, like this, is separated setting by three, then can not be affected each other, make the operation of trailer more stable.
Claims (10)
1. a low floor trailer body underframe, comprises sleeper beam, longeron, side bar and Seat support beam; It is characterized in that:
The whole car body of sleeper beam lateral direction penetrating; Sleeper beam comprises sleeper beam lower cover, sleeper beam upper cover plate, sleeper beam side plate, sleeper beam riser and sleeper beam back plate; Sleeper beam upper cover plate is positioned at the top of sleeper beam lower cover, described sleeper beam riser is upwards bent to form at the two ends of sleeper beam lower cover, sleeper beam riser is connected with sleeper beam upper cover plate, outside sleeper beam back plate is connected with in the upper end of each sleeper beam riser, described sleeper beam side plate is connected in the both sides of sleeper beam lower cover and sleeper beam upper cover plate, sleeper beam side plate extends to the outer end of sleeper beam back plate and is connected with sleeper beam riser and sleeper beam back plate, in the position of sleeper beam back plate, sleeper beam side plate is higher than sleeper beam back plate; Sleeper beam gusset is provided with between sleeper beam lower cover and sleeper beam upper cover plate;
Longeron is connected in the both sides, middle part of sleeper beam; Described longeron comprises end carriage and longeron body, and end carriage and longeron body are structure as a whole, and longeron is T font; Described longeron comprises longeron lower cover, longeron upper cover plate, end plate, end cap and longeron side plate; Longeron lower cover is T font, and from end to sleeper beam direction, longeron lower cover extends then horizontal-extending obliquely after end carriage place horizontal-extending; Longeron upper cover plate is T font, and from end to sleeper beam direction, longeron upper cover plate extends then horizontal-extending obliquely after end carriage place horizontal-extending; Take horizontal surface as benchmark, the angle that longeron upper cover plate extends obliquely is less than the angle that longeron lower cover extends obliquely, and longeron upper cover plate and longeron lower cover are reduced gradually at the cross-sectional plane of extension obliquely; End plate connection is in longeron upper cover plate and the longeron lower cover side away from sleeper beam; End cap is connected to and is positioned at the longeron upper cover plate of end carriage and the two ends of longeron lower cover; Longeron side plate is connected in the both sides of the inner side of end carriage and longeron body; Longeron gusset is connected with between longeron upper cover plate and longeron lower cover;
Be respectively equipped with side bar in the both sides of vehicle body bottom frame, side bar is connected with sleeper beam, longeron and Seat support beam;
Seat support beam is connected with sleeper beam, longeron and side bar.
2. low floor trailer body underframe according to claim 1, is characterized in that: the first hollow out being provided with more than two on sleeper beam lower cover, sleeper beam upper cover plate is provided with second hollow out of more than two; Sleeper beam back plate is provided with the 3rd hollow out of more than two.
3. low floor trailer body underframe according to claim 1, is characterized in that: the position that sleeper beam side plate corresponds to sleeper beam riser forms transition arc and lower transition arc.
4. low floor trailer body underframe according to claim 1, is characterized in that: between sleeper beam riser and sleeper beam back plate, be welded with gusset.
5. low floor trailer body underframe according to claim 1, is characterized in that: the 4th hollow out being provided with more than two on longeron lower cover, and longeron upper cover plate is provided with the 5th hollow out of more than two.
6. low floor trailer body underframe according to claim 1, it is characterized in that: longeron lower cover outwards forms the first salient away from the middle part of the side of sleeper beam, longeron upper cover plate outwards forms the second salient away from the middle part of the side of sleeper beam, be connected with articulated slab between first salient and the second salient, the first salient, the second salient and articulated slab form hinged seat.
7. low floor trailer body underframe according to claim 1, is characterized in that: on end cap, be provided with hole for hoist.
8. low floor trailer body underframe according to claim 1, it is characterized in that: described side bar comprises side bar body and is connected to the strength beam at side bar body two ends, and described strength beam comprises the first vertical beam, the second vertical beam, the first longeron, the second longeron, first crossbeam and the first diagonal brace; The lower end of the first vertical beam is connected with end carriage, and the upper end of the first vertical beam is connected with side bar body; The lower end of the second vertical beam is connected with the first longeron, and the upper end of the second vertical beam is connected with side bar body; One end of first longeron is connected with end carriage, and the other end of the first longeron is connected with first crossbeam; One end of second longeron is connected with end carriage, and the other end of the second longeron is connected with first crossbeam; One end of first crossbeam is connected with longeron body; First diagonal brace is connected between the first vertical beam and the second vertical beam.
9. low floor trailer body underframe according to claim 1, it is characterized in that: Seat support beam forms framed structure by many 3rd vertical beams, many 3rd longerons and Duo Gen second cross beam, wherein, the 3rd vertical beam near sleeper beam is platy structure, be connected with longeron body near the lower end of the 3rd vertical beam of sleeper beam, and there is transition arc portion.
10. low floor trailer body underframe according to claim 1, is characterized in that: be welded with middle base in the central bottom of sleeper beam; A longeron and be positioned in the horizontal-extending section near sleeper beam and be welded with traction Connection Block wherein; Be positioned in the horizontal-extending section near sleeper beam be welded with horizontal shock-absorbing Connection Block at another longeron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510517413.1A CN105015571B (en) | 2015-08-21 | 2015-08-21 | Chassis of low-floor trailer body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510517413.1A CN105015571B (en) | 2015-08-21 | 2015-08-21 | Chassis of low-floor trailer body |
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| CN105015571A true CN105015571A (en) | 2015-11-04 |
| CN105015571B CN105015571B (en) | 2017-05-17 |
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| CN105460084A (en) * | 2016-01-05 | 2016-04-06 | 中车株洲电力机车有限公司 | Middle part structure of underframe of low-floor vehicle body |
| CN109808725A (en) * | 2017-11-22 | 2019-05-28 | 中车唐山机车车辆有限公司 | A kind of control body frame and control vehicle |
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| 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 |
| 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 |
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| CN105460084A (en) * | 2016-01-05 | 2016-04-06 | 中车株洲电力机车有限公司 | Middle part structure of underframe of low-floor vehicle body |
| CN105460084B (en) * | 2016-01-05 | 2017-11-28 | 中车株洲电力机车有限公司 | A kind of low-floor vehicle body bottom frame central structure |
| CN109808725A (en) * | 2017-11-22 | 2019-05-28 | 中车唐山机车车辆有限公司 | A kind of control body frame and control vehicle |
| 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 |
| US11932288B2 (en) | 2018-12-25 | 2024-03-19 | Crrc Tangshan Co., Ltd. | Double-deck rail vehicle and vehicle body thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN105015571B (en) | 2017-05-17 |
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