CN115257849A - Modular combined type framework for low-floor tramcar - Google Patents
Modular combined type framework for low-floor tramcar Download PDFInfo
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- CN115257849A CN115257849A CN202211099204.6A CN202211099204A CN115257849A CN 115257849 A CN115257849 A CN 115257849A CN 202211099204 A CN202211099204 A CN 202211099204A CN 115257849 A CN115257849 A CN 115257849A
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- 230000007246 mechanism Effects 0.000 claims description 37
- 210000001503 joint Anatomy 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000006096 absorbing agent Substances 0.000 claims description 20
- 230000035939 shock Effects 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 description 25
- 239000000725 suspension Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 7
- 241001669679 Eleotris Species 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- 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
- B61F5/50—Other details
- B61F5/52—Bogie frames
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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
- 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
- B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
Abstract
A modular combined type framework for a low-floor tramcar belongs to the field of framework devices for tramcar bogies, and a main body structure of the modular combined type framework comprises two arched side beams and two box-type horizontal cross beams; the two arched side beams are arranged in parallel in a centrosymmetric mode, the opening directions of two equidirectional isosceles trapezoid notches on each arched side beam face the ground, two ends of a middle-section horizontal longitudinal beam of each arched side beam are fixedly connected through two box-type horizontal cross beams which are parallel to each other, and the two middle-section horizontal longitudinal beams and the two box-type horizontal cross beams form a square central frame together. The invention can ensure that the plane rotation function in a larger angle range is realized between the vehicle body and the bearing rotary type deep groove bolster device, the fixed wheelbase of the bogie can be greatly reduced while the structural strength is ensured, the pan angle rigidity of the wheel set and the distortion rigidity of the bogie can be effectively reduced, thereby reducing the rotary radius of the bogie, improving the capability of a rail train to quickly pass through a small-radius curve rail section and ensuring that the train has good curve trafficability.
Description
Technical Field
The invention belongs to the field of framework devices for tramcar bogies, and particularly relates to a modular combined framework for a low-floor tramcar.
Background
The curve trafficability of a rail train is an important index for measuring the performance of a train bogie, is positively correlated with the speed of the train passing through a small-radius curve track section, and directly influences the wheel rail abrasion pressure and the riding comfort of the train, so that the continuous improvement of the curve trafficability is always one of the research and development focuses in the field of bogie design. The bogie of the high-speed motor train unit generally adopts a basic structure form of an external H-shaped welding frame of an axle box, the bogie frame of the box type welding type is only suitable for motor train unit type rail vehicles with high structural strength, large overall mass, abundant layout space of accessory equipment and larger minimum curve radius, the overall structure of the bogie has large occupied space, large turning radius, heavy mass and high mass center, the minimum curve passing radius of the bogie is at least 100 meters, the wall thickness of a steel plate required by splicing, assembling and welding is at least 20 millimeters, the average value of the overall weight of the frame exceeds 1.6 tons, the axial span of two side beams is at least 1800 millimeters, the existing index parameters ensure that the traditional frame of the external axle box is heavy and wide, the minimum curve radius cannot be further reduced, the fatigue strength of a welding seam of the external axle box inevitably gradually decreases along with the lapse of time, even the key welding seam of the frame is cracked, and the bogie is not beneficial to driving safety; in addition, the conventional axle box is exposed out of the outer end of the axle, so that the external axle box has larger distance and transverse span, more occupied space and less compact structure.
On the other hand, urban lines and suburban lines operated by the low-floor tramcars comprise more small-radius curve track sections, the smaller the curve radius of the track passing by the train is, the larger the turning angle value between the train body and the bogie is, and in order to ensure that the train smoothly passes through the curve track sections, the prior art mostly adopts shorter train body modules and is matched with a workshop hinge device to ensure the curve passing performance of the train. However, the arrangement of the hinge structure between the cars of the conventional low-floor tramcar not only results in a large number of bogies, thereby increasing the axle load and improving the abrasion of wheel rails, but also causes the floor of the car to form an avoidance step at the position corresponding to the center of the bogie, so that the floor area in the car cannot be continuous, and the design target of 100% low floor rate of the whole train cannot be achieved. In addition, articulated traditional structure in workshop still can cause the pedestrian passageway between the seat comparatively narrow, leads to the car space limited, and then influences the improvement of train passenger capacity, and the operation stability that still can influence the vehicle of shorter and more automobile body module setting is unfavorable for improving rail train's functioning speed.
In order to enable the low-floor type tramcar to have the capability of quickly passing through any small-radius curve, ensure the running stability of a vehicle, further expand the carriage layout space above the floor, realize larger passenger capacity and better meet the running requirements of the rail trains in urban and suburban road sections, a novel framework for the floor type tramcar bogie needs to be developed urgently, so that the integral gravity center of the framework is further reduced, and the framework and a novel two-system swing bolster device framework in a corresponding form can jointly form a 100% low-floor type train bogie, thereby replacing the traditional hinged structure between carriages.
Disclosure of Invention
The bogie aims at solving the problem that the existing bogie of various conventional floor rail trains cannot meet the functional requirements of low-floor rail trains; in the existing low-floor-rate rail train, the number of bogies is large, the axle weight is increased due to the hinged structure between carriages, high wheel rail abrasion is caused, and the carriage floor needs to form an incontinuous avoidance step at the position corresponding to the bogie, so that the design target of 100% low floor rate of the whole train cannot be achieved; the invention provides a modular combined type framework for a low-floor tramcar, which solves the technical problems that the traditional framework can cause that a pedestrian passageway between seats is narrow, the space in the tramcar is limited, the passenger capacity of a train is further influenced, the running stability of the train is influenced due to the arrangement of shorter and more train body modules, and the running speed of the train is not favorably improved.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a modular combined type framework for a low-floor tramcar comprises a main body structure, a frame, a plurality of transverse beams and a plurality of transverse beams, wherein the main body structure comprises two arched side beams and two box-type horizontal transverse beams; the two arched side beams are arranged in parallel in a centrosymmetric mode, the opening directions of two equidirectional isosceles trapezoid notches on each arched side beam face the ground, two ends of a middle-section horizontal longitudinal beam of each arched side beam are fixedly connected through two box-type horizontal cross beams which are parallel to each other, and the two middle-section horizontal longitudinal beams and the two box-type horizontal cross beams form a square central frame together.
The modularized combined type framework further comprises four oblique quadrangular prisms, four obtuse-angle-shaped side beam end parts, two double-node motor hanging seats, two single-node gearbox hanging seats and two sets of magnetic rail stoppers; the left end and the right end of the same side wall of the middle section horizontal longitudinal beam are respectively provided with two cross beam butt joints in a mirror symmetry manner, two ends of each box-shaped horizontal cross beam are fixedly connected with a corresponding cross beam butt joint in a welding manner, the left end and the right end of the other side wall of the middle section horizontal longitudinal beam are respectively provided with two magnetic track stop butt joints in a mirror symmetry manner, and each magnetic track stop butt joint is fixedly connected with a corresponding magnetic track stop in a welding manner; two secondary steel spring base mounting holes are respectively formed in the upper end face of the middle section horizontal longitudinal beam in a left-right symmetrical mode;
the left end and the right end of the upper end surface of the middle section horizontal longitudinal beam are respectively provided with an oblique quadrangular prism in a mirror symmetry manner; the two oblique quadrangular prisms are in an inverted splayed shape and are in mirror symmetry with respect to the horizontal longitudinal beam of the middle section, and the three prisms jointly form an inverted Chinese character zigzag side beam middle section frame structure; the side wall of the upper part of the oblique quadrangular prism, which is outwards inclined in an inverted splayed shape, is provided with an obtuse-angle-shaped end piece butt joint in the horizontal direction, and the obtuse-angle-shaped end piece butt joint is parallel to the middle-section horizontal longitudinal beam; a hanging seat interface is arranged on the upper part of the side wall of the oblique quadrangular prism where the magnetic rail stop butt joint interface is positioned;
the square central frame and the five oblique quadrangular prisms form an inverted four-leg square table-shaped frame structure together; the two double-node motor hanging seats and the two single-node gearbox hanging seats are arranged in parallel to the box-type horizontal cross beam, the two double-node motor hanging seats are rotationally and symmetrically arranged in the diagonal direction of the four-leg square table-shaped frame, and each double-node motor hanging seat is vertically and fixedly connected with a corresponding hanging seat interface; the two single-node gearbox hanging seats are also rotationally and symmetrically arranged in the other diagonal direction of the four-leg square table-shaped frame, and each single-node gearbox hanging seat is vertically and fixedly connected with a corresponding hanging seat interface; the end head of each obtuse-angle side beam end part is in butt joint with one obtuse-angle end part, and the two end parts are mutually encircled to form an isosceles trapezoid notch with a downward opening; and the opposite end surfaces of the two box-type horizontal cross beams are respectively and integrally provided with a transverse and vertical shock absorber integrated mounting seat, a transverse shock absorber and an anti-rolling torsion bar integrated mounting seat.
The middle lower part of the side wall of the oblique quadrangular prism which is shaped like an inverted Chinese character 'eight' and is outwards inclined is provided with a first pair of ports of the herringbone axle box; the side lines of the obtuse angle-shaped side beam end parts, where the obtuse angles are located, are respectively provided with a herringbone axle box second pair of connectors; each wheel pair built-in herringbone axle box is respectively embedded into a corresponding isosceles trapezoid gap, and is respectively connected with a first pair of interfaces of the herringbone axle box and a second pair of interfaces of the herringbone axle box which are arranged in the isosceles trapezoid gap through herringbone rubber springs.
The inverted Chinese character U-shaped side beam middle section frame and the isosceles trapezoid notches at the two sides of the inverted Chinese character U-shaped side beam middle section frame are connected in mirror symmetry to form a Chinese character U-shaped side beam main body structure similar to a Chinese character U-shaped; two ends of the respective middle horizontal longitudinal beam of the two arched side beam main structures are fixedly connected through two parallel box-type horizontal cross beams respectively.
The middle part of the double-node motor hanging seat is provided with two vertically-through motor hanging rubber node seats; the lower end of the double-node motor hanging seat is provided with a brake mechanism hanging seat, and the side wall of the double-node motor hanging seat facing the single-node gearbox hanging seat is provided with a side beam traction pull rod seat.
The middle section frame of the n-shaped side beam is integrally formed by adopting a casting technology; the obtuse angle side beam end part and the box type horizontal cross beam are box type beam parts formed by welding steel plates.
The obtuse angle range of the obtuse-angle shaped side member end part is 90 DEG to 120 DEG, and the optimum value thereof is 104 DEG
The transverse and vertical shock absorber integrated mounting seat, the transverse and transverse shock absorber and the anti-rolling torsion bar integrated mounting seat respectively comprise two rotating shaft combined seats which are vertically welded with each other in different surfaces.
The invention has the beneficial effects that: the isosceles trapezoid gap corresponding to the arched side beam of the modular combined framework for the low-floor tramcar can enable a corresponding built-in herringbone axle box on each wheel pair to be embedded into the isosceles trapezoid gap and is fixedly connected with a first pair of interfaces of the herringbone axle boxes and a second pair of interfaces of the herringbone axle boxes which are arranged in the isosceles trapezoid gap respectively; the wheel disc can be arranged in a neutral position between the outer side wall of the arched side beam and the inner side wall of the motor driving mechanism so as to form an axle box built-in assembly structure, the curve trafficability of the rail train is improved by shortening the wheel track and the axle box load position, and the axle box and motor layout space which is originally positioned in the internal area of the square central frame is effectively released to a certain extent. The axle box built-in layout mode which is easy to disassemble and assemble and is realized based on the structure also provides favorable guarantee for the convenience of the replacement operation of the elastic wheel rim and the rubber piece.
The inverted Chinese character U-shaped side beam middle section frame is a secondary suspension mechanism and a U-shaped swing bolster mechanism which are designed by matching with the inverted Chinese character U-shaped side beam middle section frame, and mounting interfaces which are reasonable in layout and very compact are designed in a one-to-one correspondence mode, so that the layout space of the secondary suspension mechanism originally located in the internal area of the square central frame is further effectively released; the layout design that the two bolster traction pull rod seats, the two motor driving mechanisms and the two braking mechanisms are all arranged on the outer side of the modular combined type framework based on the modular combined type framework structure not only improves the running stability of the bogie, but also contributes to and helps to further release the layout space of the central area of the framework.
The bearing rotary deep groove sleeper beam framework further realized based on the modularized combined framework of the invention can reserve enough expansion space in the central area of the middle section framework of the inverted Chinese character side beam in the shape of Chinese character, the depth and the width of the U-shaped groove on the main body of the bolster are obviously increased, the depth value of the concave groove is deepest in the longitudinal direction and is largest in the width of the cross groove on the premise of meeting the interference clearance between components and the advancing limit of the train bottom, the height value of the floor of the train body from the ground is further reduced, the floor is not required to be provided with an old step avoiding the middle component of a bogie, and finally the floor area in the train is completely communicated and continuous on the same horizontal height reference surface, so that the design target of 100% low floor rate of the whole train is achieved, meanwhile, the effective width of the pedestrian passageway between seats is transversely expanded, the space in the train is released, and the maximum passenger carrying quantity of the train is obviously improved.
The middle section frame of the n-shaped side beam is integrally formed by adopting a casting technology, so that the manufacturing cost can be greatly simplified, the structural strength is improved, the service life of the framework is prolonged, the number of welding seams is obviously reduced, and the occupancy rate of an automatic welding robot is reduced; obtuse angle shape curb girder end member and box horizontal cross beam are the box girder part that the steel sheet welding formed, and its the two all links firmly with a few font curb girder middle section frames with grafting interface butt joint and welding to realize the modularization independent production and the later stage streamlined combination of casting part and box welding part, and then reduce manufacturing cost, improve production efficiency.
The bearing rotary type deep groove sleeper beam framework further realized based on the modularized combined framework of the invention can enable the plane rotation function between the car body and the bearing rotary type deep groove swing bolster device within a larger angle range. The compact casting frame has small side beam distance and light weight, so that the structural size and the structural strength of the compact casting frame are obviously changed, the fixed axle distance of a bogie can be greatly reduced while the structural strength is ensured, the span between two side beam units is further reduced, the rigidity of the swing angle of a wheel set and the torsional rigidity of the bogie can be effectively reduced, the turning radius of the bogie is reduced, the capability of a rail train to quickly pass through a small-radius curve rail section is improved, the train has good curve trafficability, and the hollow casting structure not only plays a role in saving traction power, but also effectively reduces the abrasion between a rail and a wheel tread after the whole weight is reduced, so that the design service life of the wheel set and the rail is prolonged.
After the connection mode between the carriages of the novel tramcar adopting the bogie is updated from the old articulated mode to the rotary connection mode based on the large-size central rotary bearing, the number of the bogies can be obviously reduced, the total axle weight of the whole train is reduced, the abrasion of wheel tracks and the traction loss are further reduced, the advancing speed of the train is improved, energy is saved, old short and numerous train body modules are improved again and replaced by a single-section longer new train body module mode, the total number of train body modules of the whole train marshalling is obviously reduced, and the novel tramcar has good high-speed operation stability, larger passenger capacity and spacious riding comfort while the curve trafficability of the train is ensured and improved and the upper limit of the train speed is improved. The tramcar with the bogie can run at high speed on a suburb line through a small-radius curve in an urban area, can realize a 100% low-floor and transverse-step-free structure in the tramcar, improves the riding comfort of the tramcar, and fills up the technical blank in the field of suburb tramcar bogies with a 100% low-floor rate.
Drawings
FIG. 1 is a perspective view of a modular frame for a low floor tram of the present invention;
FIG. 2 is an exploded assembly schematic view of the modular frame for the low floor tram of the present invention;
FIG. 3 is a perspective view of the arcuate side member of the present invention;
FIG. 4 is a front elevational view of the center section of the inverted V-shaped side sill of the present invention;
FIG. 5 is an exploded assembly schematic view of the bow-shaped side member of the present invention;
FIG. 6 is a top view of a square center frame of the present invention;
FIG. 7 is a perspective view of an inverted four-legged square table frame of the present invention;
FIG. 8 is a top plan view of FIG. 1 of the present invention;
FIG. 9 is a schematic view of the modular frame for a low floor tram of the present invention, with two tie rods designed to fit the modular frame, and with the anti-roll torsion bar, two vertical dampers and two transverse dampers in the new secondary suspension;
FIG. 10 is a schematic perspective view of the bearing rotary deep groove bolster beam frame constructed by the modular combined frame for the low floor tramcar and the rotary deep groove secondary bolster mechanism designed to match with the modular combined frame;
FIG. 11 is a schematic illustration of the explosive assembly application of FIG. 10;
FIG. 12 is an exploded assembly application schematic view of the modular frame and its matching design of the swing deep groove secondary bolster mechanism for a low floor tram of the present invention in a state where the bolster is separated;
fig. 13 is a schematic view showing an assembly relationship of the structure shown in fig. 12 in a reversed view and in assembly with a plurality of magnetic track brake devices;
FIG. 14 is a side view of FIG. 10;
FIG. 15 is a schematic perspective view of a rotatable 100% low-floor tram truck formed from a modular frame for a low-floor tram in accordance with the present invention;
FIG. 16 is a schematic illustration of the explosive application of FIG. 15;
FIG. 17 is a top view of FIG. 15;
fig. 18 is a right side view of fig. 15.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 8, the modular frame 6 for a low floor tram of the present invention has a main structure including two bow-shaped side members and two box-shaped horizontal cross members 6-2; the two arched side beams are arranged in parallel in a mirror image mode, the opening directions of two isosceles trapezoid notches in the same direction on each arched side beam face the ground, two ends of a middle-section horizontal longitudinal beam 6-1 of each arched side beam are fixedly connected through two parallel box-type horizontal cross beams 6-2 respectively, and the two horizontal cross beams form a square central frame as shown in the figure 6.
The modular combined type framework 6 also comprises four oblique quadrangular prisms 6-3, two obtuse angle side beam end parts 6-4, two double-node motor hanging seats 6-5, two single-node motor hanging seats 6-6 and two groups of magnetic track fixing seats 6-7; the left end and the right end of the same side wall of the middle section horizontal longitudinal beam 6-1 are respectively provided with two beam butt joints 6-1-1 in a mirror symmetry mode, two ends of each box-shaped horizontal beam 6-2 are fixedly connected with a corresponding beam butt joint 6-1-1 in a welding mode, the left end and the right end of the other side wall of the middle section horizontal longitudinal beam 6-1 are respectively provided with two magnetic track fixing seat butt joints 6-1-3 in a mirror symmetry mode, each magnetic track fixing seat butt joint 6-1-3 is fixedly connected with a corresponding magnetic track fixing seat 6-7 in a welding mode, and the magnetic track fixing seats 6-7 are collinear with the box-shaped horizontal beam 6-2; two secondary steel spring base mounting holes 6-1-2 are symmetrically arranged on the upper end surface of the middle horizontal longitudinal beam 6-1 in a left-right mode.
The left end and the right end of the upper end surface of the middle horizontal longitudinal beam 6-1 are respectively provided with an oblique quadrangular column 6-3 in a mirror symmetry manner; as shown in fig. 4, two oblique quadrangular prisms 6-3 are in an inverted splayed shape and are in mirror symmetry with respect to a middle horizontal longitudinal beam 6-1, and the three prisms jointly form an inverted Chinese character side beam middle frame structure in a shape like a Chinese character 'ji'; an obtuse-angle-shaped end piece butt joint opening 6-3-1 in the horizontal direction is formed in the side wall, which is outwards inclined in an inverted splay shape, of the upper portion of the oblique quadrangular prism 6-3, and the obtuse-angle-shaped end piece butt joint opening 6-3-1 is parallel to the middle-section horizontal longitudinal beam 6-1; the upper part of the side wall of the oblique quadrangular 6-3 where the magnetic track fixing seat butt joint port 6-1-3 is located is provided with a motor hanging seat port 6-3-3 in the horizontal direction, and the motor hanging seat port 6-3-3 is parallel to the magnetic track fixing seat butt joint port 6-1-3.
The square central frame and the four oblique quadrangular prisms 6-3 form an inverted four-leg square table-shaped frame structure shown in figure 7; two double-node motor hanging seats 6-5 and two single-node motor hanging seats 6-6 are arranged in parallel to the box-type horizontal beam 6-2, the two double-node motor hanging seats 6-5 are rotationally and symmetrically arranged in the diagonal direction of the four-leg square table-shaped frame, and each double-node motor hanging seat 6-5 is vertically and fixedly connected with a corresponding motor hanging seat interface 6-3-3; the two single-node motor hanging seats 6-6 are also rotationally and symmetrically arranged in the other diagonal direction of the four-leg square table-shaped frame, and each single-node motor hanging seat 6-6 is vertically and fixedly connected with one corresponding motor hanging seat interface 6-3-3; the end head of each obtuse-angle-shaped side beam end part 6-4 is paired and welded with an obtuse-angle-shaped end part butt joint port 6-3-1, and the two end parts are enclosed together to form an isosceles trapezoid notch with a downward opening as shown in figure 3; the opposite end surfaces of the two box-type horizontal cross beams 6-2 are respectively and integrally provided with a transverse and vertical shock absorber integrated mounting seat 6-2-1 and a transverse shock absorber and anti-side-rolling torsion bar integrated mounting seat 6-2-2.
A herringbone shaft box first pair of interfaces 6-3-3 are arranged at the middle lower part of the side wall of an inverted splayed and outward-inclined quadrangular prism 6-3; the side lines of the obtuse angles of the obtuse-angle-shaped side beam end parts 6-4 are respectively provided with a herringbone axle box second pair of interfaces 6-4-1; each wheel pair built-in herringbone axle box 1-3 is respectively embedded into a corresponding isosceles trapezoid gap and is fixedly connected with a first pair of herringbone axle box interfaces 6-3-3 and a second pair of herringbone axle box interfaces 6-4-1 which are arranged in the isosceles trapezoid gaps.
The inverted Chinese character side beam middle section frame and the isosceles trapezoid notches of which the two sides are in mirror symmetry connection with each other form a bow-shaped side beam main body structure similar to Chinese character bow as shown in figures 3 and 5; two ends of the middle section horizontal longitudinal beam 6-1 of each of the two arched side beam main body structures are fixedly connected through two parallel box-shaped horizontal cross beams 6-2 respectively.
The middle part of the double-node motor hanging seat 6-5 is provided with two vertically through motor hanging rubber node seats 6-5-3; the lower end of the double-node motor hanging seat 6-5 is provided with a brake mechanism hanging seat 6-5-2, and the side wall of the single-node motor hanging seat 6-6 facing the double-node motor hanging seat 6-5 is provided with a side beam traction pull rod seat 6-5-1.
The obtuse angle side beam end part 6-4 and the box type horizontal cross beam 6-2 are box type beam parts formed by welding steel plates. The obtuse angle range of the obtuse-angled side member end part 6-4 is 90 to 120, and the optimum value thereof is 104; the transverse and vertical shock absorber integrated mounting seat 6-2-1 and the transverse shock absorber and anti-rolling torsion bar integrated mounting seat 6-2-2 comprise two rotating shaft combined seats which are vertically welded with each other in different surfaces.
In the specific application of the modular combined framework for the low floor tramcar of the present invention, as shown in fig. 10 and 11, the secondary suspension mechanism 5, the U-shaped bolster mechanism 7 and the large-sized central pivot bearing 8 designed to match the modular combined framework 6 are first assembled. The U-shaped swing bolster mechanism 7 and the large-size central rotary bearing 8 jointly form a bearing rotary type deep groove swing bolster device; the bearing rotary deep groove swing bolster device, a secondary suspension mechanism 5 and two traction pull rods 9 form a rotary deep groove secondary swing bolster mechanism; the rotary deep groove secondary bolster mechanism and the modular combined framework 6 further form a bearing rotary deep groove bolster framework as shown in fig. 11 to 14.
Elastically connecting each transverse and vertical shock absorber integrated mounting seat 6-2-1 and the sleeper beam vertical shock absorber hanging seats 7-6 which are in one-to-one correspondence with the transverse and vertical shock absorber integrated mounting seats through a vertical shock absorber 5-3; each transverse shock absorber and anti-rolling torsion bar integrated mounting seat 6-2-2 and the bolster transverse shock absorber seat 7-4 corresponding to the transverse shock absorber and the anti-rolling torsion bar integrated mounting seat are elastically connected through a transverse shock absorber 5-4. Fixedly connecting a bearing outer ring of a large-size central rotary bearing 8 with a rotary bearing mounting screw hole circumferential array 7-1-1 through a fastener, and fixedly connecting a bearing inner ring of the large-size central rotary bearing with a vehicle body underframe through a bolt fastener; one end of the top of each motor driving mechanism 2 is elastically connected with the one-to-one corresponding single-node motor hanging seats 6-6 through a rubber hanging node; the other end of the top of each motor driving mechanism 2 is elastically connected with two vertically through motor suspension rubber node seats 6-5-3 which are in one-to-one correspondence through a rubber suspension node; each magnetic track brake device 4 is correspondingly and fixedly connected with the lower parts of the outer side walls of the middle-section horizontal longitudinal beams 6-1 in one-to-one correspondence through two magnetic track fixing seats 6-7 in one group; each brake mechanism 3-1 is fixedly connected with one-to-one corresponding brake mechanism hanging seat 6-5-2. Elastic rubber joints are arranged at two ends of each traction pull rod 9, one end of each traction pull rod is elastically fixedly connected with the corresponding swing bolster traction pull rod seat 7-3, and the other end of each traction pull rod 9 is elastically fixedly connected with the corresponding side beam traction pull rod seat 6-5-1.
Then, two ends of each wheel shaft 1-1 of the wheel pair mechanism 1 are respectively and rotationally connected with an isosceles trapezoid gap on the arched side beam through a corresponding wheel pair built-in herringbone axle box 1-3; the two motor driving mechanisms 2 are oppositely fixed on the left side and the right side of the modular combined type framework 6, and the wheel discs 1-2 are arranged in a neutral position between the outer side wall of the arched side beam and the inner side wall of the motor driving mechanism 2 so as to form an axle box built-in assembly structure; the two magnetic track brake devices 4 are respectively fixedly connected with the lower parts of the outer side walls of the corresponding middle section horizontal longitudinal beams 6-1; the two braking mechanisms 3-1 are respectively hoisted below the modular combined type framework 6 in the direction of a diagonal line of the central framework of the framework and are respectively and correspondingly arranged on the outer sides of the outer diameters of the left front wheel disc and the right rear wheel disc 1-2 of the bogie; the periphery of the lower part of the U-shaped swing bolster mechanism 7 is elastically connected with a square central frame of the modularized combined type framework 6 through a secondary suspension mechanism 5; the inner ring of the large-size center slewing bearing 8 is fixedly connected with the underframe of the car body through a bolt fastener, and the outer ring of the bearing is fixedly connected with the center of the bottom of the U-shaped swing bolster mechanism 7 through a bolt fastener; the two traction pull rods 9 are arranged in a Z-shaped posture which is parallel and opposite to each other and is rotationally symmetrical along the diagonal direction of the U-shaped swing bolster mechanism 7; one end of a traction pull rod 9 is connected with the U-shaped swing bolster mechanism 7 through a shaft, and the other end of the traction pull rod 9 is connected with the modularized combined type framework 6 through a shaft. One end of each traction pull rod 9 is hinged with the bolster traction pull rod seat 7-3 which corresponds to one, and the other end of each traction pull rod 9 is hinged with the side beam traction pull rod seat 6-5-1 which corresponds to one; (ii) a The two torsion bar vertical pull rods 5-2-2 are respectively in one-to-one corresponding rotary connection with two sleeper beam anti-side rolling torsion bar hanging seats 7-5; the upper end of each secondary steel spring group of the secondary suspension mechanism 5 is correspondingly and fixedly connected with the lower end face of a secondary steel spring horizontal pressing seat plate 7-2; the lower end of each secondary steel spring group is fixedly connected with the secondary steel spring base mounting holes 6-1-2 which correspond one to one; the upper end of each secondary steel spring group of the secondary suspension mechanism 5 is correspondingly and fixedly connected with the lower end face of a secondary steel spring horizontal pressing seat plate 7-2; the lower end of each secondary steel spring group is fixedly connected with the secondary steel spring base mounting holes 6-1-2 which correspond one to one; one end of the top of each motor driving mechanism 2 is elastically connected with the one-to-one corresponding single-node motor hanging seats 6-6 through a rubber hanging node; the other end of the top of each motor driving mechanism 2 is elastically connected with two vertically through motor suspension rubber node seats 6-5-3 which are in one-to-one correspondence through a rubber suspension node; each magnetic track brake device 4 is correspondingly and fixedly connected with the lower parts of the outer side walls of the middle-section horizontal longitudinal beams 6-1 in one-to-one correspondence through two magnetic track fixing seats 6-7 in one group; each brake mechanism 3-1 is fixedly connected with one-to-one corresponding brake mechanism hanging seat 6-5-2. The upper end of each secondary steel spring group of the secondary suspension mechanism 5 is correspondingly and fixedly connected with the lower end face of a secondary steel spring horizontal pressing base plate 7-2; the lower end of each secondary steel spring group is fixedly connected with the secondary steel spring base mounting holes 6-1-2 which correspond one to one. In the end of this process, namely, the bearing rotary type deep groove sleeper beam framework based on the modularized combined type framework 6 of the invention can be arranged in one step constitutes a complete swivelable 100% low floor tram bogie as shown in figures 15 to 18.
The large-size central rotary bearing 8 comprises a plurality of bearing oil temperature control and oil injection pipelines 8-3, one end of each bearing oil temperature control and oil injection pipeline is distributed in a scattering manner and is communicated with a retainer of the rotary bearing, the other end of each bearing oil temperature control and oil injection pipeline is connected with a train vehicle-mounted oil temperature monitoring and management system, and the large-size central rotary bearing 8 can adopt a NU2224ECML/C4VA301 type bearing produced by SKF Skefu corporation in Sweden. Forming an integral bogie frame with the top view similar to the Chinese character # -shaped.
Claims (8)
1. Modular combined type framework for low-floor tramcar is characterized in that: the main structure of the combined type framework (6) comprises two arched side beams and two box type horizontal cross beams (6-2); the two arched side beams are arranged in parallel in a centrosymmetric manner, the opening directions of two equidirectional isosceles trapezoid notches on each arched side beam face the ground, two ends of a middle section horizontal longitudinal beam (6-1) of each arched side beam are fixedly connected through two parallel box-type horizontal cross beams (6-2), and the two horizontal cross beams form a square central frame together.
2. The modular frame for a low floor tram as claimed in claim 1, wherein: the modularized combined type framework (6) further comprises four oblique quadrangular prisms (6-3), four obtuse-angle-shaped side beam end parts (6-4), two double-node motor hanging seats (6-5), two single-node gearbox hanging seats (6-6) and two sets of magnetic track stoppers (6-7); the left end and the right end of the same side wall of the middle section horizontal longitudinal beam (6-1) are respectively provided with two cross beam butt joints (6-1-1) in a mirror symmetry mode, two ends of each box-shaped horizontal cross beam (6-2) are fixedly connected with one corresponding cross beam butt joint (6-1-1) in a welding mode, the left end and the right end of the other side wall of the middle section horizontal longitudinal beam (6-1) are respectively provided with two magnetic track stop butt joints (6-1-3) in a mirror symmetry mode, and each magnetic track stop butt joint (6-1-3) is fixedly connected with one corresponding magnetic track stop (6-7) in a welding mode; two secondary steel spring base mounting holes (6-1-2) are respectively arranged on the upper end surface of the middle horizontal longitudinal beam (6-1) in a left-right symmetrical manner;
the left end and the right end of the upper end surface of the middle section horizontal longitudinal beam (6-1) are respectively provided with an oblique quadrangular prism (6-3) in a mirror symmetry manner; the two oblique quadrangular prisms (6-3) are in an inverted splayed shape and are in mirror symmetry with respect to the middle horizontal longitudinal beam (6-1), and the three oblique quadrangular prisms form an inverted Chinese character zigzag side beam middle section frame structure together; the side wall of the upper part of the oblique quadrangular prism (6-3) which is in an inverted splayed outward shape is provided with an obtuse-angle end piece butt joint port (6-3-1) in the horizontal direction, and the obtuse-angle end piece butt joint port (6-3-1) is parallel to the middle-section horizontal longitudinal beam (6-1); a hanging seat interface (6-3-2) is arranged at the upper part of the side wall of the oblique quadrangular prism (6-3) where the magnetic track stop butt joint interface (6-1-3) is positioned;
the square central frame and five of the four oblique quadrangular prisms (6-3) form an inverted four-leg square table-shaped frame structure; two double-node motor hanging seats (6-5) and two single-node gear box hanging seats (6-6) are arranged in parallel to the box-type horizontal beam (6-2), the two double-node motor hanging seats (6-5) are rotationally and symmetrically arranged in the diagonal direction of the four-leg square table-shaped frame, and each double-node motor hanging seat (6-5) is vertically and fixedly connected with a corresponding hanging seat interface (6-3-2); the two single-node gearbox hanging seats (6-6) are also rotationally and symmetrically arranged in the other diagonal direction of the four-leg square table-shaped frame, and each single-node gearbox hanging seat (6-6) is vertically and fixedly connected with one corresponding hanging seat interface (6-3-2); the end head of each obtuse angle-shaped side beam end part (6-4) is in butt welding with an obtuse angle-shaped end part butt joint port (6-3-1), and the two parts surround together to form an isosceles trapezoid notch with a downward opening; and the opposite end surfaces of the two box-type horizontal cross beams (6-2) are respectively and integrally provided with a transverse and vertical shock absorber integrated mounting seat (6-2-1), a transverse shock absorber and an anti-rolling torsion bar integrated mounting seat (6-2-2).
3. The modular frame for a low floor tram as claimed in claim 2, wherein: the middle lower part of the side wall of the oblique quadrangular prism (6-3) which is in an inverted splayed outward inclination shape is provided with a herringbone axle box first pair of interfaces (6-3-3); the side lines of the obtuse angles of the obtuse-angle-shaped side beam end parts (6-4) are respectively provided with a herringbone axle box second pair of interfaces (6-4-1); each wheel pair built-in herringbone axle box (1-3) is respectively embedded into a corresponding isosceles trapezoid gap and is respectively connected with a herringbone axle box first pair of interfaces (6-3-3) and a herringbone axle box second pair of interfaces (6-4-1) which are arranged in the isosceles trapezoid gap through herringbone rubber springs.
4. The modular frame for a low floor tram as claimed in claim 3, wherein: the inverted Chinese character U-shaped side beam middle section frame and the isosceles trapezoid notches of which the two sides are in mirror symmetry connection with each other form a bow-shaped side beam main body structure similar to Chinese character bow; two ends of the middle horizontal longitudinal beam (6-1) of each of the two arched side beam main body structures are fixedly connected through two parallel box-shaped horizontal cross beams (6-2).
5. The modular frame for a low floor tram as claimed in claim 4, wherein: the middle part of the double-node motor hanging seat (6-5) is provided with two motor hanging rubber node seats (6-5-3) which are vertically communicated; the lower end of the double-node motor hanging seat (6-5) is provided with a brake mechanism hanging seat (6-5-2), and the side wall of the double-node motor hanging seat (6-5) facing the single-node gearbox hanging seat (6-6) is provided with a side beam traction pull rod seat (6-5-1).
6. The modular frame for a low floor tram as claimed in claim 5 wherein: the middle section frame of the n-shaped side beam is integrally formed by adopting a casting technology; the obtuse-angle side beam end part (6-4) and the box-type horizontal cross beam (6-2) are box-type beam parts formed by welding steel plates.
7. The modular frame for a low floor tram as claimed in claim 6, wherein: the obtuse angle range of the obtuse angle side member end part (6-4) is 90 DEG to 120 DEG, and the optimum value is 104 deg.
8. The modular frame for a low floor tram as claimed in claim 6, wherein: the transverse and vertical shock absorber integrated mounting seat (6-2-1) and the transverse and transverse shock absorber and anti-rolling torsion bar integrated mounting seat (6-2-2) comprise two rotating shaft combined seats which are vertically welded with each other in different surfaces.
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| CN202211099204.6A CN115257849B (en) | 2022-09-08 | 2022-09-08 | Modular combined framework for low-floor tramcar |
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| CN202211099204.6A CN115257849B (en) | 2022-09-08 | 2022-09-08 | Modular combined framework for low-floor tramcar |
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| CN101070070A (en) * | 2007-06-14 | 2007-11-14 | 中国南车集团株洲车辆厂 | Steering-rack combining method and device for railway cargo vehicles |
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| CN103496378A (en) * | 2013-10-18 | 2014-01-08 | 南车株洲电力机车有限公司 | Bogie frame and side beam thereof |
| CN105923003A (en) * | 2016-05-21 | 2016-09-07 | 中车青岛四方机车车辆股份有限公司 | Secondary suspension device of bogie of low-floor railway vehicle and bogie |
| CN105923007A (en) * | 2016-06-21 | 2016-09-07 | 中车唐山机车车辆有限公司 | Swing bolster of bogie |
| WO2020053608A1 (en) * | 2018-09-12 | 2020-03-19 | Ganz Motor Kft. | Two-axle modular bogie assembly for railway vehicles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070070A (en) * | 2007-06-14 | 2007-11-14 | 中国南车集团株洲车辆厂 | Steering-rack combining method and device for railway cargo vehicles |
| CN102963380A (en) * | 2012-12-21 | 2013-03-13 | 南车株洲电力机车有限公司 | Three-axle bogie |
| CN103496378A (en) * | 2013-10-18 | 2014-01-08 | 南车株洲电力机车有限公司 | Bogie frame and side beam thereof |
| CN105923003A (en) * | 2016-05-21 | 2016-09-07 | 中车青岛四方机车车辆股份有限公司 | Secondary suspension device of bogie of low-floor railway vehicle and bogie |
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| WO2020053608A1 (en) * | 2018-09-12 | 2020-03-19 | Ganz Motor Kft. | Two-axle modular bogie assembly for railway vehicles |
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| CN115257849B (en) | 2024-04-12 |
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