CN111252102B - Low-floor tramcar underframe structure - Google Patents
Low-floor tramcar underframe structure Download PDFInfo
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- CN111252102B CN111252102B CN202010185215.0A CN202010185215A CN111252102B CN 111252102 B CN111252102 B CN 111252102B CN 202010185215 A CN202010185215 A CN 202010185215A CN 111252102 B CN111252102 B CN 111252102B
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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
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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
- B61F1/02—Underframes with a single central sill
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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
- B61F1/08—Details
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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
- B61F1/08—Details
- B61F1/10—End constructions
Abstract
The invention discloses a low-floor tramcar underframe structure, which comprises an underframe body, wherein the underframe is formed by sequentially welding a first-position end structure, a middle sleeper beam structure, a passageway structure and a second-position end structure from front to back, the front and back lengths of the underframe are 5420mm, the left and right widths of the underframe are 2504mm, and the height of the underframe is 760 mm; and the center of the outer end of the passageway structure is fixedly welded with a lower hinge seat and a rotary stop seat. The underframe structure of the low-floor tramcar meets the requirements of various equipment installation of a tramcar body, ensures the stable running of a vehicle, can meet various load requirements generated during the running of the vehicle, and simultaneously meets the requirements of car body axle weight, low cost, simple structure and convenient manufacture.
Description
Technical Field
The invention relates to the field of tramcars, in particular to a chassis structure of a low-floor tramcar.
Background
The low-floor tramcar is one of the important transportation means of modern urban rail transit, and is deeply popular with various cities due to the characteristics of low construction cost, convenience for passengers to take, flexible operation, various marshalling, large passenger capacity, sharing with the existing pavement resources and the like.
The underframe is an important component of the low-floor tramcar, and as for the car body underframe on the bogie, the underframe bears the whole weight of the car body and needs to transfer the running load transferred by the bogie during running, so that the car body underframe is required to have certain strength, rigidity and stability and good force transfer performance.
The hourglass spring of the low-floor tramcar in the prior art is low in installation surface, so that the vertical distance between a bogie and a car body is small, the space is small, and arrangement of other devices is not facilitated. The distance between the hourglass springs is small, and the stability is poor when the vehicle body is supported.
In the running process of the vehicle, the axle weight of the vehicle is strictly required, so that the chassis of the vehicle body needs to be designed in a light weight mode under the condition that the strength of the vehicle body is met, and meanwhile, the chassis is simple in structure, convenient to manufacture and capable of meeting the cost requirement.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-floor tramcar underframe structure which has reasonable spatial arrangement, light weight, good strength, rigidity and stability and excellent force transmission performance.
In order to solve the technical problems, the invention is realized by the following technical scheme: a low-floor tramcar underframe structure comprises an underframe body, wherein the underframe is formed by sequentially welding a first-position end structure, a middle sleeper beam structure, a passageway structure and a second-position end structure from front to back, the front and back lengths of the underframe are 5420mm, the left and right widths of the underframe are 2504mm, and the height of the underframe is 760 mm; and the center of the outer end of the passageway structure is fixedly welded with a lower hinge seat and a rotary stop seat.
Preferably, the one-position end structure comprises a front end structure, a middle structure and a rear end structure, the front end structure and the rear end structure are respectively connected to the front end and the rear end of the middle structure, longitudinal beams for connecting the front end structure and the rear end structure are symmetrically arranged on the left side and the right side of the middle structure, and the longitudinal beams are connected with the middle parts of the side surfaces of the middle structure through cross beams.
Preferably, the front end structure is a box-shaped structure, the front-back length of the front end structure is 178mm, the height of the front end structure is 120mm, the left-right width of the front end structure is 2410mm, and the front end structure consists of a connecting plate, an upper cover plate, a lower bottom plate and a middle vertical plate; the upper cover plate is arranged above the top of the lower base plate and is parallel to the lower base plate, an upward right-angle folding edge is arranged at the front end of the bottom of the lower base plate and is used for supporting the front end of the bottom of the upper cover plate, the rear ends of the upper cover plate and the lower base plate are connected through a middle vertical plate, the left end and the right end are connected through two connecting plates which are symmetrically arranged, the right-angle folding edge and the middle vertical plate are connected through a plurality of bolts, two groups of reinforcing ribs which are bilaterally symmetrical and are respectively close to the left connecting plate and the right connecting plate are arranged between the upper cover plate and the lower base plate, each group of reinforcing ribs consists of three reinforcing ribs, the distance.
Preferably, the middle structure consists of two bending longitudinal beams which are arranged in bilateral symmetry and a middle structure cross beam connected to the middle parts of the two bending longitudinal beams; the bending longitudinal beam is composed of an integrally formed upright post and a boss, the width of the bottom of the boss is 228mm, the width of the upright post is 135mm, the boss is located at the front end of the upright post and is structurally connected with the front end, and a middle structure cover plate is arranged at the top of the upright post.
Preferably, the rear end structure is a box-type structure consisting of a rear end structure cover plate arranged in parallel up and down, side door stand columns arranged on the left side and the right side of the rear end structure cover plate and vertical plates arranged on the front side and the rear side of the rear end structure cover plate; the rear end structure cover plate located above the rear end structure is 6mm thick in the middle and 4mm thick on two sides, the rear end structure cover plate located below is 8mm thick in the middle and 4mm thick on two sides, and the vertical plate is 6mm thick.
Preferably, five groups of reinforcing ribs are transversely arranged between the two cover plates in the rear end structure, two groups of 30mm F-shaped plate lifting lugs are fixedly welded on the outer side of a vertical plate at the rear end of the rear end structure, the distance between the two groups of plate lifting lugs is 300mm, and each group of plate lifting lugs are formed by welding and connecting two lifting lugs through rib plates with the width of 30mm and the thickness of 10 mm.
Preferably, the middle sleeper beam structure consists of two hourglass spring mounting seats which are arranged in a bilateral symmetry mode, a sleeper beam reinforcing plate is arranged at the bottom of each hourglass spring mounting seat, and a sealing plate is arranged outside each sleeper beam reinforcing plate.
Preferably, the hourglass spring mounting seat consists of an hourglass spring side plate, an hourglass spring mounting plate arranged above the hourglass spring side plate and a sleeper beam vertical plate connecting the hourglass spring side plate and the hourglass spring mounting plate; the thickness of the hourglass spring mounting plate is 12mm, two central holes are symmetrically formed in the hourglass spring mounting plate close to the outer edge of the hourglass spring mounting plate, the distance between the two symmetrical central holes of the two symmetrically-arranged hourglass spring mounting seats is 2010mm, and the front-back distance between the central holes is 600 mm; a circular sinking platform with the diameter of 330mm is arranged on the periphery of the central hole on the hourglass spring mounting seat, the circular sinking platform is concentric with the central hole, the depth of the circular sinking platform is 3mm, a U-shaped opening with an outward opening is formed in the position, corresponding to the circular sinking platform, of each hourglass spring side plate, a square boss vertical stop is welded on the outer side of each hourglass spring side plate, the size of each vertical stop is 150mm x 120mm, and the height of each protruding hourglass spring side plate is 26 mm; the middle part between two adjacent U-shaped openings on the hourglass spring side plate is provided with a lifting lug, the center part of the other side, corresponding to the U-shaped openings, of the hourglass spring side plate is provided with a rectangular underfoot pedal space with an outward opening and used for installing a longitudinal seat, the rectangular underfoot pedal space sinks relative to a circular sinking platform, the front length and the rear length of the rectangular underfoot pedal space are 550mm, the left width and the right width of the rectangular underfoot pedal space are 412mm, and the depth of the rectangular underfoot pedal space is 251.
Preferably, the aisle structure comprises a middle cover plate, a traction pull rod seat structure arranged at the rear end of the center cover plate and wheel packages symmetrically arranged at the left side and the right side of the middle cover plate and the traction pull rod seat structure, the wheel packages are higher than the middle cover plate and the traction pull rod seat structure, and an aisle is formed between the middle cover plate and the traction pull rod seat structure and the wheel packages at the two sides; and the top surface of the wheel packet is provided with an engagement hole for matching with a middle sleeper beam structure.
Preferably, two reinforcing ribs with the thickness of 8mm and the width of 60mm are symmetrically welded on the wheel packages on two sides of the passageway, and the distance between the two reinforcing ribs is 108 mm.
Compared with the prior art, the invention has the advantages that: the lower part of the longitudinal seat mounting seat of the underframe structure of the low-floor tramcar is provided with a pedal space, the height and the width meet the requirements of human engineering, and the defect of small space in the low-floor tramcar is effectively overcome; reinforcing ribs are arranged at the lower part of the aisle structure for mounting the transverse seat mounting seat so as to meet the requirements of strength and rigidity of the seat mounting position; the underframe structure adopts the concept of integral plane and inclined plane transition structure design, and the floor height does not need to be raised; according to the space in the vehicle, the seats are distributed transversely and longitudinally, so that the seat is reasonably utilized, meets the ergonomics and meets the riding comfort of passengers; the middle sleeper beam structure provides a hourglass spring mounting plate, and a longitudinal seat can be mounted above the hourglass spring mounting plate, so that the hourglass spring mounting plate has enough mounting height, the vertical distance between the bogie and the vehicle body can be increased, and other equipment is arranged in a space; the distance between the center holes of the hourglass spring mounting plates is large, so that the requirement on the running stability of a vehicle is met; the hourglass spring mounting panel not only provides the installation and the vertical backstop function of vertical bumper shock absorber, lifts by crane the lug about still, satisfies the bogie and lifts by crane, need not newly-increased hoist structure.
Drawings
FIG. 1 is a top view of a low-floor tramcar underframe structure according to the invention;
FIG. 2 is a schematic perspective view of a low-floor tramcar underframe structure according to the present invention;
FIG. 3 is a schematic view of a front end structure of a low-floor tramcar underframe structure according to the present invention;
FIG. 4 is a schematic view of a structure of a middle part of a first end of a underframe structure of a low-floor tramcar according to the invention;
FIG. 5 is a schematic view of a structure of a rear end of a low-floor tramcar underframe according to the present invention;
FIG. 6 is a schematic view of a middle bolster structure and a hourglass spring mounting seat structure in a underframe structure of a low-floor tramcar according to the invention;
fig. 7 is a schematic view of a passage structure in the underframe structure of the low-floor tramcar.
In the figure: 1. a bit-side structure; 11. a front end structure; 111. a connecting plate; 112. an upper cover plate; 113. a lower base plate; 114. a middle vertical plate; 115. reinforcing ribs; 12. an intermediate structure; 121. an intermediate structure cover plate; 122. bending the longitudinal beam; 123. a middle structure beam; 13. a back end structure; 131. a rear end structural cover plate; 132. a vertical plate; 133. side door pillars; 134. reinforcing ribs; 135. a plate lifting lug; 14. a cross beam; 15. a stringer; 2. a middle bolster structure; 21. an hourglass spring mounting seat; 211. a hourglass spring side plate; 212. a sleeper beam vertical plate; 213. the hourglass spring mounting plate; 214. stopping in a vertical direction; 215. lifting the lifting lug; 216. a foot pedal space; 22. a bolster reinforcing plate; 3. a gangway structure; 31. a draw bar base structure; 32. a middle cover plate; 33. wrapping by a wheel; 34. an engagement hole; 4. a two-terminal structure; 5. a hinged seat.
Detailed Description
The invention is described in detail below with reference to the figures and the detailed description.
Fig. 1 and 2 show a low-floor tramcar underframe structure, which comprises an underframe body, wherein the underframe is formed by sequentially welding a first-position end structure 1, a middle sleeper beam structure 2, a passageway structure 3 and a second-position end structure 4 from front to back, the front and back length of the underframe is 5420mm, the left and right width of the underframe is 2504mm, and the height of the underframe is 760 mm; and a lower hinge seat 5 and a rotary stop seat are fixedly welded at the center of the outer end of the passageway structure 3.
In order to simplify the design, make things convenient for the dismouting, one-position end structure 1 includes front end structure 11, intermediate structure 12 and rear end structure 13, front end structure 11 and rear end structure 13 are connected respectively to intermediate structure 12's front and back both ends, and the left and right sides symmetry of intermediate structure 12 is provided with longeron 15 of connecting front end structure 11 and rear end structure 13, is connected through crossbeam 14 between the middle part of longeron 15 and intermediate structure 12 side. The whole one-position end structure 1 forms a force transmission path in the longitudinal direction, and longitudinal force is transmitted to the other end of the vehicle along the path.
As shown in fig. 3, the front end structure 11 is a box-shaped structure, the front-back length of the front end structure 11 is 178mm, the height thereof is 120mm, the left-right width thereof is 2410mm, and the front end structure is composed of a connecting plate 111, an upper cover plate 112, a lower base plate 113 and a middle vertical plate 114; the upper cover plate 112 is arranged above the top of the lower base plate 113 and is parallel to the lower base plate 113, an upward right-angle folded edge is arranged at the front end of the lower base plate 113 and is used for supporting the front end of the bottom of the upper cover plate 112, the upper cover plate 112 and the rear end of the lower base plate 113 are connected through a middle vertical plate 114, the left end and the right end are connected through two connecting plates 111 which are symmetrically arranged, and the right-angle folded edge and the middle vertical plate 114 are connected through a plurality of bolts. In order to ensure the strength and rigidity requirements of the connecting plates 111, two groups of reinforcing ribs 115 which are bilaterally symmetrical and are respectively close to the left connecting plate 111 and the right connecting plate 111 are arranged between the upper cover plate 112 and the lower base plate 113, each group of reinforcing ribs 115 consists of three reinforcing ribs, the distance between two symmetrical reinforcing ribs in the middle is 420mm, and the distance between the other adjacent reinforcing ribs is 225 mm.
As shown in fig. 4, the middle structure 12 is composed of two bending longitudinal beams 122 arranged in bilateral symmetry and a middle structure cross beam 123 connected to the middle parts of the two bending longitudinal beams 122; the bending longitudinal beam 122 is composed of an integrally formed upright column and a boss, the width of the bottom of the boss is 228mm, the width of the upright column is 135mm, the boss is located at the front end of the upright column and connected with the front end structure 11, and a middle structure cover plate 121 is arranged at the top of the upright column. The whole boss and upright post structure transmits the load of the vehicle head to the rear end structure 13 of the primary end structure 1 and disperses the load to the middle sleeper beam structure 2 and the secondary end structure 4 of the chassis.
As shown in fig. 5, the rear end structure 13 is a box-shaped structure composed of a rear end structure cover plate 131 arranged in parallel up and down, side door pillars 133 arranged on the left and right sides of the rear end structure cover plate 131, and vertical plates 132 arranged on the front and rear sides of the rear end structure cover plate 131; in order to meet the rigidity requirement, the thickness of the rear end structure cover plate 131 located above the rear end structure 13 is 6mm, the thickness of the rear end structure cover plate 131 located below the rear end structure 13 is 4mm, the thickness of the rear end structure cover plate 131 located below the rear end structure is 8mm, the thickness of the rear end structure cover plate located below the rear end structure cover plate is 4mm, and the thickness of the vertical plate 132 is 6 mm.
As shown in fig. 6, five groups of reinforcing ribs 134 are transversely arranged between two cover plates 131 in the rear end structure 13, two groups of 30mm F-like plate lifting lugs 135 are fixedly welded on the outer side of a vertical plate 132 at the rear end of the rear end structure 13, the distance between the two groups of plate lifting lugs 135 is 300mm, and each group of plate lifting lugs 135 is formed by welding and connecting two lifting lugs through a rib plate with the width of 30mm and the thickness of 10 mm; middle sleeper beam structure 2 comprises two hourglass spring mount pads 21 that bilateral symmetry set up, hourglass spring mount pad 21 bottom is provided with sleeper beam reinforcing plate 22, and sleeper beam reinforcing plate 22's outside is provided with the shrouding. The hourglass spring mounting seat 21 consists of an hourglass spring side plate 211, an hourglass spring mounting plate 213 arranged above the hourglass spring side plate 211 and a corbel vertical plate 212 connecting the hourglass spring side plate 211 and the hourglass spring mounting plate 213; the thickness of the hourglass spring mounting plate 213 is 12mm, two center holes are symmetrically formed in the hourglass spring mounting plate 213 close to the outer edge of the hourglass spring mounting plate, the distance between the two symmetrical center holes of the two hourglass spring mounting seats 21 is 2010mm, the front-back distance between the center holes is 600mm, and the mounting distance can provide enough support for a vehicle when the vehicle runs, so that the stability requirement of the vehicle is met; a circular sinking platform with the diameter of 330mm is arranged on the periphery of the central hole of the hourglass spring mounting seat 21, the circular sinking platform is concentric with the central hole and the depth of the circular sinking platform is 3mm, a U-shaped opening with an outward opening is formed in the part, corresponding to the circular sinking platform, of the hourglass spring side plate 211, a square boss vertical stop 214 is welded on the outer side of the hourglass spring side plate 211, the size of the vertical stop is 150mm x 120mm, and the height of the protruding hourglass spring side plate 211 is 26 mm; the middle part between two adjacent U-shaped openings on the hourglass spring side plate 211 is provided with a lifting lug 215, the center part of the other side, corresponding to the U-shaped opening, of the hourglass spring side plate 211 is provided with a rectangular underfoot pedal space 216 with an outward opening and used for mounting a longitudinal seat, the rectangular underfoot pedal space 216 sinks relative to a circular sinking platform, the front and rear length of the rectangular underfoot pedal space is 550mm, the left and right width of the rectangular underfoot pedal space is 412mm, and the depth of the rectangular underfoot pedal space is 251 mm.
As shown in fig. 7, the aisle structure 3 is composed of a middle cover plate 32, a draw rod seat structure 31 disposed at the rear end of the middle cover plate 32, and wheel bags 33 symmetrically disposed at the left and right sides of the middle cover plate 32 and the draw rod seat structure 31, the front ends of the draw rod seat structure 31 and the middle cover plate 32 are both inclined downward, the wheel bags 33 are higher than the middle cover plate 32 and the draw rod seat structure 31, and an aisle is formed between the middle cover plate 32 and the draw rod seat structure 31 and the wheel bags 33 at the two sides; the top surface of the wheel package 33 is provided with an engagement hole 34 for engaging the middle sleeper beam structure 2. In order to ensure the strength and rigidity requirements of the aisle and the two sides of the aisle and meet the use strength and rigidity requirements of the seat, two reinforcing ribs with the thickness of 8mm and the width of 60mm are symmetrically welded on the wheel packages 33 on the two sides of the aisle, and the distance between the two reinforcing ribs is 108 mm.
The lower part of the longitudinal seat mounting seat of the underframe structure of the low-floor tramcar is provided with a foot pedal space 216, the height and the width meet the requirements of human engineering, and the defect of small space in the low-floor tramcar is effectively overcome; reinforcing ribs are arranged at the lower part of the aisle structure 3 for mounting a transverse seat mounting seat so as to meet the requirements of strength and rigidity of a seat mounting position; the underframe structure adopts the concept of integral plane and inclined plane transition structure design, and the floor height does not need to be raised; according to the space in the vehicle, the seats are distributed transversely and longitudinally, so that the seat is reasonably utilized, meets the ergonomics and meets the riding comfort of passengers; the middle sleeper beam structure 2 is provided with an hourglass spring mounting plate 213, and a longitudinal seat can be mounted above the hourglass spring mounting plate, so that the hourglass spring mounting surface has enough mounting height, the vertical distance between the bogie and the vehicle body can be increased, and other equipment is arranged in a space; the distance of the center hole of the hourglass spring mounting plate 213 is large, so that the requirement on the running stability of the vehicle is met; hourglass spring mounting panel 213 not only provides the installation and the vertical backstop function of vertical bumper shock absorber, lifts by crane lug 215 about in addition, satisfies the bogie and lifts by crane, need not newly-increased hoist structure.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a low-floor tram chassis structure, includes the chassis body, its characterized in that: the underframe is formed by sequentially welding a one-position end structure (1), a middle sleeper beam structure (2), a passageway structure (3) and a two-position end structure (4) from front to back, wherein the front and back lengths are 5420mm, the left and right widths are 2504mm, and the heights are 760 mm; a lower hinge seat (5) and a rotary stop seat are fixedly welded at the center of the outer end of the passageway structure (3);
the middle sleeper beam structure (2) is composed of two hourglass spring mounting seats (21) which are arranged in a bilateral symmetry mode, a sleeper beam reinforcing plate (22) is arranged at the bottom of each hourglass spring mounting seat (21), and a sealing plate is arranged outside each sleeper beam reinforcing plate (22);
the hourglass spring mounting seat (21) consists of an hourglass spring side plate (211), an hourglass spring mounting plate (213) arranged above the hourglass spring side plate (211) and a sleeper beam vertical plate (212) connecting the hourglass spring side plate (211) and the hourglass spring mounting plate (213); two central holes are symmetrically formed in the hourglass spring mounting plate (213) close to the outer edge of the hourglass spring, a circular sinking platform is arranged on the hourglass spring mounting seat (21) and positioned on the periphery of the central holes, and the circular sinking platform is concentric with the central holes; a U-shaped opening with an outward opening is formed in the portion, corresponding to the circular sinking platform, of the hourglass spring side plate (211), and a square boss vertical stop (214) is welded to the outer side of the hourglass spring side plate (211);
a lifting lug (215) is arranged in the middle of the hourglass spring side plate (211) between two adjacent U-shaped openings, a rectangular underfoot pedal space (216) with an outward opening and used for mounting a longitudinal seat is arranged in the center of the other side of the hourglass spring side plate (211) corresponding to the U-shaped openings, and the rectangular underfoot pedal space (216) sinks relative to the circular sinking platform.
2. A low-floor tram underframe structure according to claim 1, characterized in that: one end structure (1) includes front end structure (11), intermediate structure (12) and rear end structure (13), front end structure (11) and rear end structure (13) are connected respectively to both ends around intermediate structure (12), and the left and right sides symmetry of intermediate structure (12) is provided with longeron (15) of connecting front end structure (11) and rear end structure (13), is connected through crossbeam (14) between longeron (15) and the middle part of intermediate structure (12) side.
3. A low-floor tram underframe structure according to claim 2, characterized in that: the front end structure (11) is a box-shaped structure, the front-back length of the front end structure (11) is 178mm, the height of the front end structure is 120mm, the left-right width of the front end structure is 2410mm, and the front end structure consists of a connecting plate (111), an upper cover plate (112), a lower bottom plate (113) and a middle vertical plate (114); the upper cover plate (112) is arranged above the top of the lower base plate (113) and parallel to the lower base plate (113), an upward right-angle folded edge is arranged at the front end of the lower base plate (113) and used for supporting the front end of the bottom of the upper cover plate (112), the upper cover plate (112) is connected with the rear end of the lower base plate (113) through a middle vertical plate (114), the left end and the right end are connected through two connecting plates (111) which are symmetrically arranged, the right-angle folded edge and the middle vertical plate (114) are connected through a plurality of bolts, two groups of reinforcing ribs (115) which are bilaterally symmetrical and are respectively close to the left connecting plate and the right connecting plate (111) are arranged between the upper cover plate (112) and the lower base plate (113), each group of reinforcing ribs (115) is composed of three reinforcing ribs, the distance between the two symmetrical reinforcing ribs in.
4. A low-floor tram underframe structure according to claim 2, characterized in that: the middle structure (12) is composed of two bending longitudinal beams (122) which are arranged in bilateral symmetry and a middle structure cross beam (123) connected to the middle parts of the two bending longitudinal beams (122); the bending longitudinal beam (122) is composed of an integrally formed upright post and a boss, the width of the bottom of the boss is 228mm, the width of the upright post is 135mm, the boss is located at the front end of the upright post and connected with a front end structure (11), and a middle structure cover plate (121) is arranged at the top of the upright post.
5. A low-floor tram underframe structure according to claim 2, characterized in that: the rear end structure (13) is a box-shaped structure consisting of a rear end structure cover plate (131) arranged in parallel from top to bottom, side door upright posts (133) arranged on the left side and the right side of the rear end structure cover plate (131) and vertical plates (132) arranged on the front side and the rear side of the rear end structure cover plate (131); rear end structure apron (131) that lie in the top on rear end structure (13) wherein thickness is 6mm, and both sides thickness is 4mm, and rear end structure apron (131) that lie in the below wherein thickness is 8mm, and both sides thickness is 4mm, the thickness of riser (132) is 6 mm.
6. The low-floor tram underframe structure according to claim 5, characterized in that: five groups of reinforcing ribs (134) are transversely arranged between the two cover plates (131) in the rear end structure (13), two groups of 30mm F-shaped plate lifting lugs (135) are fixedly welded on the outer side of the vertical plate (132) at the rear end of the rear end structure (13), the distance between the two groups of plate lifting lugs (135) is 300mm, and each group of plate lifting lugs (135) is formed by welding and connecting the two lifting lugs through rib plates with the width of 30mm and the thickness of 10 mm.
7. A low-floor tram underframe structure according to claim 1, characterized in that: the thickness of the hourglass spring mounting plate (213) is 12mm, the distance between two bilaterally symmetrical center holes of the two hourglass spring mounting seats (21) which are symmetrically arranged is 2010mm, and the front-back distance between the center holes is 600 mm; the diameter of the circular sinking platform is 330mm, the depth of the circular sinking platform is 3mm, the size of the vertical stop is 150mm x 120mm, and the height of the protruding hourglass spring side plate (211) is 26 mm; the rectangular underfoot pedal space (216) has a front-rear length of 550mm, a left-right width of 412mm, and a depth of 251 mm.
8. A low-floor tram underframe structure according to claim 1, characterized in that: the aisle structure (3) consists of a middle cover plate (32), a traction pull rod seat structure (31) arranged at the rear end of the center cover plate (32) and wheel packages (33) symmetrically arranged at the left side and the right side of the middle cover plate (32) and the traction pull rod seat structure (31), wherein the wheel packages (33) are higher than the middle cover plate (32) and the traction pull rod seat structure (31), and an aisle is formed between the middle cover plate (32), the traction pull rod seat structure (31) and the wheel packages (33) at the two sides; the top surface of the wheel package (33) is provided with an engagement hole (34) used for being connected with the middle sleeper beam structure (2).
9. A low-floor tram underframe structure according to claim 1, characterized in that: two reinforcing ribs with the thickness of 8mm and the width of 60mm are symmetrically welded on the wheel packages (33) on two sides of the passageway, and the distance between the two reinforcing ribs is 108 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010185215.0A CN111252102B (en) | 2020-03-17 | 2020-03-17 | Low-floor tramcar underframe structure |
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| CN202010185215.0A CN111252102B (en) | 2020-03-17 | 2020-03-17 | Low-floor tramcar underframe structure |
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| CN111252102B true CN111252102B (en) | 2021-04-20 |
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| CN111959547B (en) * | 2020-09-01 | 2022-02-25 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle and high-low floor underframe structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040031413A1 (en) * | 2002-08-16 | 2004-02-19 | Smith Douglas W. | Railcar bolster casting method |
| CN103318211B (en) * | 2013-06-29 | 2016-02-24 | 南车南京浦镇车辆有限公司 | Guideway vehicle heavy stand formula sleeper beam structure |
| 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 |
| CN208665194U (en) * | 2018-07-27 | 2019-03-29 | 比亚迪股份有限公司 | Hourglass spring component and vehicle with it |
| 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 |
| CN110682931B (en) * | 2019-10-28 | 2020-08-25 | 中铁轨道交通装备有限公司 | Car body chassis and have its tram |
| CN110667628B (en) * | 2019-10-28 | 2020-09-18 | 中铁高新工业股份有限公司 | Car body chassis and have its tram |
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