CN115465314A - Low-floor tramcar bogie - Google Patents
Low-floor tramcar bogie Download PDFInfo
- Publication number
- CN115465314A CN115465314A CN202211171721.XA CN202211171721A CN115465314A CN 115465314 A CN115465314 A CN 115465314A CN 202211171721 A CN202211171721 A CN 202211171721A CN 115465314 A CN115465314 A CN 115465314A
- Authority
- CN
- China
- Prior art keywords
- frame
- axle
- wheel
- axle box
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 claims abstract description 48
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 230000035939 shock Effects 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a low-floor tramcar bogie which comprises a wheel set, a framework, an axle box device, a secondary suspension and a primary suspension, wherein the axle box device comprises a first axle and a second axle; the wheel sets comprise axles and wheels, the axle box devices are arranged on the axles and positioned on the inner sides of the wheels, and the two axle box devices on each wheel set are symmetrically arranged along the longitudinal axis of the framework; the axle box body of the axle box device is provided with a first connecting end which is rotationally connected with an axle, a second connecting end which is arranged above the framework and a connecting middle section which is connected between the first connecting end and the second connecting end and is connected with the framework; a primary suspension is formed between the second connecting end and the upper surface of the framework; one side of the axle box body is arranged in the wheel in an intruding mode, and the other side of the axle box body extends from the first connecting end to the second connecting end in an inclined mode, so that two opposite axle box devices on an axle are positioned on the longitudinal axis side of the framework to form a horn-shaped structure.
Description
Technical Field
The invention relates to the technical field of rail transit vehicle bogies, in particular to a low-floor tramcar bogie.
Background
In recent years, the domestic and foreign low-floor tramcar market has strong demand for 100% low-floor tramcars with rotatable wheel-set type bogies, currently, few companies with 100% low-floor rotatable bogies are internationally available, and the existing 100% low-floor rotatable bogies have different degrees of defects;
in a prior art, a chinese patent with application numbers CN201310240074.8, application date, 20130618, and publication number CN103507822B, "bogie for railway vehicle with improved suspension system, especially low-floor rail vehicle", the bogie has two loose axle wheel pairs of wheels, the wheels of each wheel pair are connected with each other by an axle structure, that is, one wheel is connected with a short axle through a bolt, the short axles at two sides are connected through a non-rotating bearing axle in the middle, and the short axles at the left and right sides are rotated through a rotating torsion bar axle embedded in the bearing axle, so that the wheels are rotated, and the axle structure has an axle box for each wheel of the corresponding wheel pair. The bogie has an articulated frame, each axle structure being supported by the articulated frame via a tie-down suspension. For each wheel, a primary suspension device has an arm extending substantially longitudinally between a first end integrally connected to an axle housing associated with the wheel and a second free end. The arm is hinged between its first and second ends about a pivotal connection to the frame. For each arm, a main coil spring extends between a first seat provided on the second end of the arm and a second seat carried by the frame. The bogie has a complex structure, resulting in low reliability;
in another wheel pair type rotatable bogie in the prior art, a primary suspension device of the bogie adopts a traditional herringbone spring (the left laminated rubber spring and the right laminated rubber spring of an axle box are arranged in a herringbone manner), and the axle box at the end part of the bogie and the primary suspension limit the rotation of a bogie body relative to the bogie, so that the width of an in-vehicle passageway above the bogie is only about 500mm, and the requirement of international market on the width of the in-vehicle passageway not less than 600mm is not met;
therefore, in view of the above problems, the invention provides a low-floor tramcar bogie which can meet the use requirement that the width of a vehicle body passageway is not less than 600mm, has a simple structure and is high in reliability.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a low-floor tramcar bogie which is a rotatable wheel pair type 100% low-floor bogie, and the bogie does not interfere with the aisle of a car body underframe when a vehicle passes through a small curve in any state on the premise of ensuring the minimum aisle width of a 600mm car body.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a low-floor tramcar bogie, which comprises:
a wheel set formed by an axle and wheels mounted on both ends of the axle;
a frame erected between the two sets of wheel pairs;
an axle box arrangement connecting said wheel-sets and said frame;
a secondary suspension connecting the frame and the vehicle body; and
a primary suspension disposed between the axle housing assembly and the frame;
the axle box devices are arranged on the axles and positioned on the inner sides of the wheels, and the two axle box devices on each group of wheel pairs are symmetrically arranged along the longitudinal axis of the framework;
the axle box body of the axle box device is provided with a first connecting end which is rotationally connected with the axle, a second connecting end which is arranged above the framework and a connecting middle section which is connected between the first connecting end and the second connecting end and is connected with the framework;
the second connecting end and the upper surface of the framework form the primary suspension;
the axle housing body is disposed intrusively within the wheel on one side and extends obliquely from the first connecting end toward the second connecting end on the other side such that the two opposing axle housing assemblies on the axle are located on the frame longitudinal axis side in a flared configuration.
Further, the first connecting end is provided with a first side surface at the wheel side and a second side surface away from the wheel side;
the first side is positioned within the wheel in an intrusive manner;
the second side extends obliquely from the first connection end toward the second connection end;
the second connecting end is offset to the frame longitudinal axis side with respect to the first side face and extends toward the frame lateral axis direction so as to be away from the axle.
Further, the primary suspension has a series of springs with axes parallel to the vertical frame axis, supported vertically by the series of springs between the frame and the second connecting end of the axle housing.
Furthermore, a base is arranged at the lower part of the connecting middle section and is connected with the framework through a positioning structure;
the framework is positioned on the opposite side of the wheel and fixedly connected with a rotating arm in a cantilever mode, the rotating arm extends upwards from the framework end in an inclined mode, and the tail end of the rotating arm is connected with the base through a series of positioning nodes.
Further, the middle part of the framework is provided with a mounting area with a hollow structure so as to be used for accommodating a traction device for connecting the framework and the secondary suspension.
Furthermore, the traction device comprises two traction pull rods which are arranged at intervals, and the two traction pull rods are arranged in an X-shaped parallel and crossed trend;
when the vehicle is switched between self weight and load, the two traction pull rods move relatively in the form of scissor arms to change the X-shaped included angle;
wherein the traction pull rod is provided with a fixed end and a movable end;
the fixed end is connected with the framework through a first connecting seat;
the movable end is connected with the secondary suspension swing bolster through a second connecting seat.
Furthermore, the traction device also comprises two telescopic transverse dampers which are arranged in an X-shaped parallel and crossed mode and used for being connected between the two traction pull rods, so that the two transverse dampers move along the two traction pull rods and also move in a telescopic mode along the length direction axis of the scissor arms.
Furthermore, a bearing surface is formed on the upper surface of the framework, the primary suspension and the secondary suspension are supported through the bearing surface, and the lower ends of the primary suspension and the secondary suspension are coplanar.
Further, the device also comprises two longitudinal driving devices;
the frame is positioned on the running rail side and fixedly connected with the longitudinal driving device along the longitudinal axis of the frame, and the longitudinal driving device is connected between the frame and the wheel pair;
and two ends of a first diagonal line a of the two groups of wheel pairs are connected with the longitudinal driving device so as to drive the wheel pairs to rotate.
Furthermore, the device also comprises two hydraulic braking devices;
and two ends of a second diagonal line b of the two groups of wheel pairs are connected with the hydraulic braking device and are used for braking the wheels.
In the technical scheme, the low-floor tramcar bogie provided by the invention has the beneficial effects that:
compared with the prior art, the low-floor tramcar bogie designed by the invention is characterized in that the bogie comprises a bogie frame and a bogie frame;
firstly, a part of a first connecting end of an axle box body, which is positioned at the wheel side, is arranged in a wheel groove structure in an intruding mode, and in addition, an axle bearing wheel and an axle box device is optimized in the wheel pair through the matching of the wheel and the axle box body, so that the axle structure is greatly optimized;
secondly, a second side surface, far away from the wheel side, of a first connecting end of the axle box body extends towards a second connecting end from the first connecting end in an inclined mode, so that two opposite axle box devices on the axle are located on the longitudinal axis side of the framework to form a horn-shaped structure, the second connecting end is offset from the first side surface of the first connecting end to the longitudinal axis side of the framework, wheels are matched with the axle box body, a larger free rotation space is provided for a vehicle body passageway, the distance between the first connecting ends of the two axle box devices is increased to the maximum degree, a series spring is offset from the transverse center line of the axle and is close to the center of the framework, and the end part (namely a cantilever) of a longitudinal beam of the framework is arranged below the axle box body, so that the upper space of the connecting middle section of the axle box body is larger, the rotation space of the vehicle body passageway is further increased, the span width in the end part of the bogie is increased, and the rotation space of the vehicle body passageway in the end part area of the bogie is increased;
the bogie is matched with the axle box body through wheels and the axle box body and matched with the frame through the primary suspension, so that when a vehicle passes through a small curve, the frame, the axle box and the primary suspension of the bogie can avoid interference with a vehicle body passageway which rotates relative to the frame and is vertically embedded into the bogie, and the use requirements that the maximum longitudinal gradient of a passing channel in a 100% low-floor tramcar adopting the wheel pair type rotary bogie is not more than 8% and the width of the vehicle body passageway is not less than 600mm are met;
compared with the prior art, the bogie has the beneficial effects of simple structure, high reliability and low failure rate.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a generally isometric view of a low-floor tram truck according to the present disclosure;
FIG. 2 is an isometric view of another perspective of the low-floor tram truck disclosed in this invention;
FIG. 3 is a top plan view of a low floor tram truck according to the present disclosure;
FIG. 4 is a bottom view of a low-floor tram truck according to the present disclosure;
FIG. 5 is a cross-sectional view of a low-floor tram truck taken along the longitudinal axis of the frame in accordance with the present disclosure;
FIG. 6 is a partial cross-sectional view of a low-floor tram truck according to the present disclosure taken along the transverse axis of the frame;
fig. 7 is a partial cross-sectional view of a low-floor tram bogie wheel pair disclosed by the invention.
Description of reference numerals:
a wheel set 10; an axle 11; a wheel 12; a hub 121; an elastic member 122; a rim 123; a pressure ring 124;
an axle box device 20; a shaft case 21; a first connection end 211; a first side 2111; a second side 2112; a second connection end 212; connecting the middle section 213; an extension section 214; a spring seat body 215; a base 216; positioning holes 2161; a receiving groove 2612; a bearing 22;
a frame 30; the longitudinal beams 31; a cross member 32; the first connecting seat 321; a swivel arm 33; a mounting hole 331; a mounting area 35; a bearing surface 36;
a primary suspension 40; a tie spring 41; a positioning node 42;
a secondary suspension 50; a secondary spring 51; a bolster 52; a second connecting seat 521; a slewing support bearing 53;
a traction device 60; a first traction link 61a; a second traction link 61b; a fixed end 611; a movable end 612; a first lateral shock absorber 62a; a second lateral damper 62b;
a longitudinal driving device 70;
a hydraulic brake device 80;
a first diagonal a;
a second diagonal b.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in FIGS. 1-7;
the invention relates to a low-floor tramcar bogie, which is arranged at the lower part of a 100 percent low-floor tramcar body, the running speed per hour of the tramcar is 100 kilometers per hour, and the bogie can also be suitable for low-floor tramcars larger than or smaller than 100 kilometers per hour according to the use requirements, and is not limited to 100 kilometers per hour;
see fig. 1, 2;
the low-floor tram bogie comprises:
a wheel set 10 formed by an axle 11 and wheels 12 mounted on both ends of the axle 11, a frame 30 bridged between the two sets of wheel sets 10, a pedestal device 20 connecting the wheel set 10 and the frame 30, a secondary suspension 50 connecting the frame 30 and a vehicle body, and a primary suspension 40 arranged between the pedestal device 20 and the frame 30;
the axle box devices 20 are arranged on the axle 11 and positioned at the inner sides of the wheels 12, and the two axle box devices 20 on each group of wheel pairs 10 are symmetrically arranged along the longitudinal axis of the frame 30;
wherein, the axle housing 21 of the axle housing 20 has a first connection end 211 rotatably connected with the axle 11, a second connection end 212 disposed above the frame 30, and a connection middle section 213 connected between the first connection end 211 and the second connection end 212 and connected with the frame 30;
as shown in fig. 3;
the first connection end 211 of the axle box body 21 is rotatably connected with the axle 11 through a bearing 22, and the first connection end 211 is provided with a first side surface 2111 at the side of the wheel 12 and a second side surface 2112 at the side far away from the wheel 12;
the first side 2111 is arranged inside the wheel 12 in an intruding manner, the wheel 12 is arranged on the side of the axle box body 21 to form a groove structure for accommodating a part of the first connecting end 211 of the axle box body 21, so that the distance between the two axle box devices 20 is increased, and the rotating space of the vehicle body passageway is correspondingly increased;
the second side 2112 extends obliquely from the first connection end 211 to the second connection end 212, so that two opposite axle box devices 20 on the axle 11 are located on the longitudinal axis side of the frame 30 to form a horn-shaped structure, that is, the distance between the first connection ends 211 of the two axle box devices 20 is greater than the distance between the second connection ends 212, thereby increasing the span width in the end part of the bogie, further increasing the turning space of the body aisle in the end part area of the bogie, and further when the adaptive vehicle passes through a small curve, the body aisle with the width of 600mm does not interfere with the bogie;
see fig. 3, 5;
a second connecting end 212 of the axle box body 21 is offset to the longitudinal axis side of the frame 30 with respect to the first side surface 2111 and extends toward the lateral axis direction of the frame 30 so as to be away from the axle 11, a primary suspension 40 is formed between the second connecting end 212 and the frame 30, the primary suspension 40 has a primary spring 41 having an axis parallel to the vertical axis of the frame 30, and is vertically supported between the frame 30 and the axle box body 21 by the primary spring 41;
the end of the second connecting end 212 is formed with an extending section 214 extending upwards, the extending section 214 is connected with a spring seat 215 for connecting a series of springs 41, and the height of the spring seat 215 is increased through the extending section 214, so that a series of springs 41 with larger vertical (Z-axis direction) dimension can be mounted, and thus a small series of suspension 40 is vertically rigid;
see fig. 2, 4;
a base 216 is arranged at the lower part of the connecting middle section 213 of the axle box body 21, and the base 216 is connected with the framework 30 through a positioning structure;
the positioning structure comprises a positioning hole 2161 and a containing groove 2612 formed on the base 216;
a positioning hole 2161 with a U-shaped structure is formed on the lower surface of the base 216, and the accommodating groove 2162 penetrates through the positioning hole 2161, so that the positioning hole 2161 is formed at two sides of the accommodating groove 2162;
the opening width of the receiving groove 2612 is not less than the width of the rotating arm 33 arranged on the frame 30, so that the rotating arm 33 can extend into the receiving groove 2612, the positioning holes 2161 are connected with two ends of a series of positioning nodes 42 in a hooking manner and position the position of the rotating arm 33, two ends of the series of positioning nodes 42 are also provided with connecting pieces in a penetrating manner and fixedly connected with the base 216 through the connecting pieces, specifically, the connecting pieces are bolts (not shown), the positioning holes 2161 are covered with a cover plate (not shown) at the opening position of the U-shaped structure, and the bolts sequentially penetrate through the cover plate, and the end parts of the series of positioning nodes 42 are fixedly connected with the bottom wall of the positioning holes 2161 of the base 216;
see fig. 2 and 4;
preferably, the frame 30 is attached to the arm 33 in a cantilevered fashion on the side of the wheelset 10, the arm 33 extending obliquely upward from the end of the frame 30, the end of the arm 33 being connected to the base 216 by a series of positioning nodes 42.
Specifically, the rotating arm 33 is formed at the end of the longitudinal beam 31 of the frame 30 on the side of the wheel set 10 through a welding process or integrally formed, the other end of the rotating arm 33 extends obliquely upwards towards the direction of the wheel set 10, of course, the rotating arm 33 can also be fixedly connected with the cross beam 32 of the frame 30 through a welding process according to the design requirements, and the structure is used for enabling the frame 30 to sink below the axis of the axle 11 through a cantilever, so that the frame 30 is closer to the ground and meets the 100% low floor;
the tail end of the rotating arm 33 is provided with a mounting hole 331, that is, the top end of the rotating arm 33 is connected with a series of positioning nodes 42 through the mounting hole 331, the series of positioning nodes 42 are in interference fit with the mounting hole 331, and two ends of the series of positioning nodes 42 are detachably and fixedly connected with the base 216;
as shown in fig. 2;
the frame 30 is formed with a hollowed-out mounting area 35 in the middle for receiving a towing device 60 connecting the frame 30 and the secondary suspension 50.
Specifically, the framework 30 comprises two longitudinal beams 31 and a cross beam 32 connected between the two longitudinal beams 31, the cross beam 32 and the longitudinal beams 31 are sequentially connected and encircled to form a mounting area 35, and a traction device 60 is mounted in the mounting area 35, so that the overall thickness of the bogie in the height direction (Z axis) is reduced, the space occupied by the bogie in the height direction is further compressed, and the 100% low floor is further met;
see fig. 2, 4;
the towing device 60 comprises two towing pull rods 61a, 61b arranged at intervals, and the two towing pull rods 61a, 61b are arranged in an X-shaped parallel crossing trend, when the vehicle is switched between dead weight and load, the two towing pull rods 61a, 61b move relatively in a scissor arm mode to change the X-shaped included angle, wherein the towing pull rods 61a, 61b are provided with a fixed end 611 and a movable end 612, the fixed end 611 is connected with the framework 30 through a first connecting seat 321, and the movable end 612 is connected with the swing bolster 52 of the secondary suspension 50 through a second connecting seat 521.
In particular, the traction means 60 comprises two traction links, namely a first traction link 61a and a second traction link 61b,
the first traction link 61a and the second traction link 61b are projected on a plumb plane parallel to the longitudinal axis of the frame 30 to form an X-shaped cross form, and are arranged in parallel with each other on a plumb plane parallel to the transverse axis of the frame 30, when the vehicle is switched between dead weight and load, the two traction links 61 change an X-shaped included angle along the longitudinal axis of the frame 30 relative to the movement of the secondary suspension 50 in the form of a scissor arm;
wherein, one end of the traction pull rod 61 is a fixed end 611, the other end is a movable end 612, the fixed end 611 is connected with a first connecting seat 321 fixedly connected on the beam 32 of the framework 30 in a form of rotary motion through a shaft, and the movable end 612 is connected with a second connecting seat 521 fixedly connected on the swing bolster 52 in a form of rotary motion through a shaft;
the fixed end 611 of the first traction pull rod 61a is connected with the first connecting seat 321, the fixed end 611 of the second traction pull rod 61b corresponding to the first traction pull rod 61a is a movable end 612 and is connected with the second connecting seat 521 on the swing bolster 52, similarly, the movable end 612 of the first traction pull rod 61a is connected with the second connecting seat 521, the movable end 612 of the second traction pull rod 61b corresponding to the first traction pull rod 61a is a fixed end 611 and is connected with the first connecting seat 321 on the frame 30, so that the two traction pull rods 61 move relatively in the form of a scissor arm to change the X-shaped included angle;
see fig. 2, 4;
the traction device 60 further comprises two telescopic transverse dampers 62a, 62b arranged in a tendency of X-shaped parallel crossing for connecting between the two traction rods 61a, 61b, so that the two transverse dampers 62a, 62b follow the movement of the two traction rods 61a, 62b also in the form of scissor arms and in telescopic movement along their length axes, wherein the two transverse dampers 62a, 62b are projected in a form of X-shaped crossing on a plumb plane parallel to the transverse axis of the frame 30 and in a mutually parallel arrangement on a plumb plane parallel to the longitudinal axis of the frame 30, the traction rods 61a, 62b and the transverse dampers 62a, 62b of the traction device 60 connect the frame 30 and the bolster 52 (the pivoting support bearing 53 on the upper part of the bolster 52 is bolted to the vehicle body, i.e. equivalent to connecting the bogie frame 30 and the vehicle body), the transverse dampers serve as transverse uniform damping, and the traction rods 61a, 61b and the transverse dampers 62a, 61b are arranged between the two transverse beams 32 of the frame 30, the lower surfaces of the traction rods 61a, 61b and the transverse dampers do not go below the lowest point of the transverse beam 32 of the frame 30, nor go below the vertical limiting beam 32.
Specifically, referring to fig. 4, the lateral damper includes two, i.e., a first lateral damper 62a and a second lateral damper 62b;
one end of the first transverse shock absorber 62a is rotatably connected with the first connecting seat 321 connected with the first traction pull rod 61a through a shaft, the other end of the first transverse shock absorber 62a is rotatably connected with the second connecting seat 521 connected with the second traction pull rod 61b through a shaft, and similarly, one end of the second transverse shock absorber 62b is rotatably connected with the first connecting seat 321 connected with the second traction pull rod 61b through a shaft, and the other end of the second transverse shock absorber 62b is rotatably connected with the second connecting seat 521 connected with the first traction pull rod 61a through a shaft, so that the two traction pull rods 61 are stabilized through the two transverse shock absorbers 62;
as shown in fig. 5;
the upper surface of the framework 30 is provided with a bearing surface 36, a primary suspension 40 and a secondary suspension 50 are supported through the bearing surface 36, and the lower ends of the primary suspension 40 and the secondary suspension 50 are coplanar;
wherein, the primary suspension 40 further comprises a first base fixedly connected with the bearing surface 36 of the frame 30 and a primary spring 41 arranged on the first base, the primary spring 41 is a steel spring, one end of the primary spring 41 is contacted with the first base in a propping manner, and the other end is contacted with the spring seat 215 in a propping manner;
the secondary suspension 50 comprises a second base fixedly connected with the bearing surface 36 of the framework 30, a secondary spring 51 arranged on the second base and a swing bolster 52 arranged above the secondary spring 51, one end of the secondary spring 51 is abutted against and contacted with the second base, the other end of the secondary spring is abutted against and contacted with the lower surface of the end part of the swing bolster 52, and the middle part of the swing bolster 52 is provided with a rotary support bearing 53 which is connected with the vehicle body through the rotary support bearing 53;
as shown in fig. 3;
the bogie for the low-floor tramcar further comprises two longitudinal driving devices 70 for driving the wheel pair 10 to rotate, the frame 30 is positioned on the running rail side and fixedly connected with the longitudinal driving devices 70 along the longitudinal axis of the frame 30, the longitudinal driving devices 70 are connected between the frame 30 and the wheel pair 10, wherein both ends of a first diagonal line a of the two groups of wheel pairs 10 are connected with the longitudinal driving devices 70 so as to drive the wheel pair 10 to rotate;
as shown in fig. 3;
in order to brake the wheel pairs 10, the low-floor tramcar bogie further comprises two hydraulic brake devices 80, the frame 30 is provided with the hydraulic brake devices 80 at the side far away from the longitudinal driving device 70, wherein the two ends of the second diagonal line b of the two groups of wheel pairs 10 are connected with the hydraulic brake devices 80 and are used for braking the wheels 12;
see fig. 6 and 7;
in the technical scheme, the low-floor tramcar bogie provided by the invention has the beneficial effects;
firstly, a part of a first connecting end of the axle box body, which is positioned at the wheel side, is arranged in a wheel groove structure in an intruding mode, and in addition, an axle for bearing wheels and an axle box device is optimized in the wheel pair through the matching of the wheels and the axle box body, so that the axle structure is greatly optimized;
secondly, the second side surface of the first connecting end of the axle box body, which is far away from the wheel side, extends towards the second connecting end from the first connecting end in an inclined manner, so that two opposite axle box devices on the axle are positioned on the longitudinal axis side of the framework to form a horn-shaped structure, the second connecting end is offset from the longitudinal axis side of the framework relative to the first side surface of the first connecting end, so that wheels are matched with the axle box body to provide a larger free rotation space for a vehicle body passageway, the distance between the first connecting ends of the two axle box devices is increased to the maximum extent, a spring is offset from the transverse center line of the axle and is close to the center of the framework, and the end part (namely a cantilever) of a longitudinal beam of the framework is arranged below the axle box body, so that the upper space of the connecting middle section of the axle box body is larger, the rotation space of the vehicle body passageway is further increased, the span width in the end part of the bogie is increased, and the rotation space of the vehicle body passageway in the end part area of the bogie is increased;
the bogie is matched with the axle box body and the primary suspension and the framework through wheels, so that when a vehicle passes through a small curve, the framework, the axle box and the primary suspension of the bogie can avoid the interference with a vehicle body passageway which rotates relative to the framework and is vertically embedded into the bogie, and the use requirements that the maximum longitudinal gradient of a passing channel in a 100% low-floor tramcar adopting the wheel pair type rotary bogie is not more than 8% and the width of the vehicle body passageway is not less than 600mm are met;
compared with the prior art, the bogie has the beneficial effects of simple structure, high reliability and low failure rate.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A low-floor tram bogie comprising:
a wheel set (10) formed by an axle (11) and wheels (12) mounted on both ends of the axle (11);
a frame (30) erected between two sets of said wheel pairs (10);
an axle box arrangement (20) connecting the wheel-sets (10) and the frame (30);
a secondary suspension (50) connecting the frame (30) and the vehicle body; and
a primary suspension (40) arranged between the axle box arrangement (20) and the frame (30);
the axle box devices (20) are arranged on the axle (11) and positioned at the inner sides of the wheels (12), and the two axle box devices (20) on each group of wheel pairs (10) are symmetrically arranged along the longitudinal axis of the framework (30);
a shaft housing (21) of the axle housing device (20) has a first connection end (211) rotatably connected to the axle (11), a second connection end (212) disposed above the frame (30), and a connection middle section (213) connected between the first connection end (211) and the second connection end (212) and connected to the frame (30);
the second connecting end (212) and the upper surface of the framework (30) form the primary suspension (40);
one side of the axle box body (21) is arranged in an invasive manner inside the wheel (12), and the other side of the axle box body (21) extends from the first connecting end (211) towards the second connecting end (212) in an inclined manner, so that two opposite axle box devices (20) on the axle (11) are located on the longitudinal axis side of the frame (30) to form a flared configuration.
2. A low-floor tram bogie as claimed in claim 1, characterised in that;
the first connection end (211) has a first side surface (2111) on the side of the wheel (12) and a second side surface (2112) on the side away from the wheel (12);
said first side (2111) being placed inside said wheel (12) in an intruding manner;
the second side (2112) extends obliquely from the first connection end (211) towards the second connection end (212);
the second connection end (212) is offset to the longitudinal axis side of the frame (30) with respect to the first side face (2111) and extends toward the lateral axis direction of the frame (30) so as to be away from the axle (11).
3. A low-floor tram bogie as claimed in claim 1 or 2, characterised in that;
the primary suspension (40) has a series of springs (41) with axes parallel to the vertical axis of the frame (30), supported vertically by the series of springs (41) between the frame (30) and the second connection end (212) of the axle box (21).
4. A low-floor tram bogie as claimed in claim 1 or 2, characterised in that;
a base (216) is arranged at the lower part of the connecting middle section (213), and the base (216) is connected with the framework (30) through a positioning structure;
the frame (30) is located the wheel pair (10) side and is linked firmly rocking arm (33) with the form of cantilever, rocking arm (33) from frame (30) end upwards extends aslope, rocking arm (33) end through a series of location node (42) with base (216) are connected.
5. A low-floor tram bogie as claimed in claim 1, characterised in that;
the frame (30) is formed with a hollow mounting area (35) in the middle for receiving a traction device (60) connecting the frame (30) and the secondary suspension (50).
6. A low-floor tram bogie as claimed in claim 5, characterised in that;
the traction device (60) comprises two traction pull rods (61 a, 61 b) which are arranged at intervals, and the two traction pull rods (61 a, 61 b) are arranged in an X-shaped parallel crossing trend;
when the vehicle is switched between self weight and load, the two traction pull rods (61 a, 61 b) move relatively in the form of scissor arms to change an X-shaped included angle;
wherein the traction link (61 a, 61 b) has a fixed end (611) and a movable end (612);
the fixed end (611) is connected with the framework (30) through a first connecting seat (321);
the movable end (612) is connected with a swing bolster (52) of the secondary suspension (50) through a second connecting seat (521).
7. A low-floor tram bogie as claimed in claim 6, characterised in that;
the traction device (60) also comprises two telescopic transverse shock absorbers (62 a, 62 b) arranged in an X-shaped parallel and crossed trend and used for connecting between the two traction pull rods (61 a, 61 b), so that the two transverse shock absorbers (62 a, 62 b) move along the two traction pull rods (61 a, 62 b) and also move in a telescopic mode along the length direction axis of the scissor arms.
8. A low-floor tram bogie as claimed in claim 1, characterised in that;
the upper surface of the framework (30) is provided with a bearing surface (36), the primary suspension (40) and the secondary suspension (50) are supported through the bearing surface (36), and the lower ends of the primary suspension (40) and the secondary suspension (50) are coplanar.
9. A low-floor tram bogie as claimed in claim 1, characterised in that;
also comprises two longitudinal driving devices (70);
the frame (30) is positioned on the running rail side and is fixedly connected with the longitudinal driving device (70) along the longitudinal axis of the frame (30), and the longitudinal driving device (70) is connected between the frame (30) and the wheel pair (10);
wherein both ends of a first diagonal line a of the two groups of wheel pairs (10) are connected with the longitudinal driving device (70) so as to drive the wheel pairs (10) to rotate.
10. A low-floor tram bogie as claimed in claim 1, characterised in that;
also comprises two hydraulic braking devices (80);
and two ends of a second diagonal line b of the two groups of wheel pairs (10) are connected with the hydraulic braking device (80) and are used for braking the wheels (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211171721.XA CN115465314B (en) | 2022-09-26 | 2022-09-26 | Low-floor tramcar bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211171721.XA CN115465314B (en) | 2022-09-26 | 2022-09-26 | Low-floor tramcar bogie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115465314A true CN115465314A (en) | 2022-12-13 |
| CN115465314B CN115465314B (en) | 2024-04-30 |
Family
ID=84334484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211171721.XA Active CN115465314B (en) | 2022-09-26 | 2022-09-26 | Low-floor tramcar bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115465314B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261310A (en) * | 1997-05-19 | 2000-07-26 | 巴克伊铸钢公司 | Railway vehicle suspension aligned truck |
| CN101857033A (en) * | 2010-05-19 | 2010-10-13 | 南车株洲电力机车有限公司 | 80km/h speed class B-type subway vehicle bogie |
| US20190152498A1 (en) * | 2017-11-17 | 2019-05-23 | National Steel Car Limited | Rail road car truck bolster |
| CN110325424A (en) * | 2016-12-08 | 2019-10-11 | 中车青岛四方机车车辆股份有限公司 | With at least one cross member and at least two pairs be supported in axle box bearing wheel pair rail vehicle bogie |
| CN110329301A (en) * | 2019-07-18 | 2019-10-15 | 通号轨道车辆有限公司 | A kind of narrow gage vehicle bogie and its manufacturing method |
| CN209683708U (en) * | 2019-03-19 | 2019-11-26 | 西南交通大学 | A kind of built-in lightweight bogie of EMU non-powered axle box |
| CN210793186U (en) * | 2019-11-14 | 2020-06-19 | 通号轨道车辆有限公司 | Suspension type rail vehicle and axle box body thereof |
| CN112706792A (en) * | 2021-02-19 | 2021-04-27 | 中车长春轨道客车股份有限公司 | Low-floor tramcar bogie capable of meeting wheelchair passing requirements |
| CN216332046U (en) * | 2021-11-15 | 2022-04-19 | 宝鸡中车时代工程机械有限公司 | Compact primary suspension bogie for track-bound engineering machinery |
-
2022
- 2022-09-26 CN CN202211171721.XA patent/CN115465314B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261310A (en) * | 1997-05-19 | 2000-07-26 | 巴克伊铸钢公司 | Railway vehicle suspension aligned truck |
| CN101857033A (en) * | 2010-05-19 | 2010-10-13 | 南车株洲电力机车有限公司 | 80km/h speed class B-type subway vehicle bogie |
| CN110325424A (en) * | 2016-12-08 | 2019-10-11 | 中车青岛四方机车车辆股份有限公司 | With at least one cross member and at least two pairs be supported in axle box bearing wheel pair rail vehicle bogie |
| US20190152498A1 (en) * | 2017-11-17 | 2019-05-23 | National Steel Car Limited | Rail road car truck bolster |
| CN209683708U (en) * | 2019-03-19 | 2019-11-26 | 西南交通大学 | A kind of built-in lightweight bogie of EMU non-powered axle box |
| CN110329301A (en) * | 2019-07-18 | 2019-10-15 | 通号轨道车辆有限公司 | A kind of narrow gage vehicle bogie and its manufacturing method |
| CN210793186U (en) * | 2019-11-14 | 2020-06-19 | 通号轨道车辆有限公司 | Suspension type rail vehicle and axle box body thereof |
| CN112706792A (en) * | 2021-02-19 | 2021-04-27 | 中车长春轨道客车股份有限公司 | Low-floor tramcar bogie capable of meeting wheelchair passing requirements |
| CN216332046U (en) * | 2021-11-15 | 2022-04-19 | 宝鸡中车时代工程机械有限公司 | Compact primary suspension bogie for track-bound engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115465314B (en) | 2024-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209683707U (en) | A kind of built-in lightweight bogie of quick lorry axle box | |
| CN110329301B (en) | Narrow-gauge vehicle bogie and manufacturing method thereof | |
| CN214356035U (en) | Articulated frame bogie for railway wagon | |
| CN111452819A (en) | Air-rail bogie and suspension type air-rail train | |
| CN114701531A (en) | Joint vehicle set | |
| CN110920655A (en) | Axle box cross connection type express freight car bogie | |
| CN111605577A (en) | Non-power single-shaft bogie and rail engineering vehicle | |
| CN110539756A (en) | powered railway vehicle bogie and railway vehicle | |
| WO2021135198A1 (en) | Bolster-less framed bogie suitable for high-speed freight wagon | |
| CN110979363B (en) | Battery trailer for air-rail train | |
| CN210852443U (en) | Powered railway vehicle bogie and railway vehicle | |
| CN108357510B (en) | Middle hinged bogie of six-axle high-floor light rail car with small curve passing capability | |
| RU2301166C2 (en) | Rail vehicle two-axle bogie | |
| CN115465314B (en) | Low-floor tramcar bogie | |
| CN111301468A (en) | Low-power-action bogie for wheel rail | |
| CN114394120B (en) | High dynamic performance railway wagon bogie | |
| CN115520238B (en) | Primary suspension system of low-floor tramcar bogie | |
| CN211809616U (en) | Swing bolster-free framework type bogie suitable for high-speed railway wagon | |
| CN111976775B (en) | Automatic radial bogie of independent wheel of centering | |
| CN212828389U (en) | Non-power single-shaft bogie and rail engineering vehicle | |
| CN115465014A (en) | Low-floor tramcar wheel set and bogie with same | |
| CN112356867A (en) | Articulated framework bogie of rail vehicle | |
| US4538525A (en) | Four-wheel passenger car truck | |
| CN212579850U (en) | Air-rail bogie and suspension type air-rail train | |
| CN220281380U (en) | Railway vehicle inner axle box hinged framework bogie and train |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |