CN115123333B - Single wheel pair trailer bogie - Google Patents

Abstract

The embodiment of the application provides a single wheel pair trailer bogie, it includes the "mouth" font framework that is enclosed by curb girder and end beam and closes, only include the wheel pair axle box of a wheel pair and constitute, and draw gear, wherein the both ends of framework end beam respectively with the both ends horizontal fixed connection of framework curb girder and the mid portion indent of end beam be the structure of "U" shape, be equipped with on the end beam of framework and pull the pull rod seat, be equipped with the wheel pair on the curb girder of framework and carry and hang the mount pad, the wheel pair axle box is connected with the framework through the wheel pair mount pad, draw gear is connected with pull rod seat and trailer car body respectively. The bogie has lighter weight, better performance and easier maintenance, and is suitable for railway vehicle application.

Description

Single wheel pair trailer bogie

Technical Field

The application relates to the technical field of railway vehicles, in particular to a single wheel pair trailer bogie.

Background

With the progress of the age, ultra-large cities are developed faster and faster, and urban light rail vehicles serving as green and environment-friendly transportation means are increasingly valued and used. To highlight the "light" feature of light rail vehicles, the dead weight of the vehicle must be greatly reduced, which is one of the directions in which modern vehicles are designed. The effective weight reduction means comprises adopting new materials, new processes and light structures, and can achieve obvious effects from the viewpoint of system dynamics for reducing the unsprung mass of the bogie, and can achieve no matter improving the running quality of the vehicle or reducing the interaction force between wheel tracks. The mass of the wheel set accounts for more than 80% of the unsprung mass of the bogie, so that the bogie wheel set is effectively reduced, the unsprung mass can be further reduced, in this respect, the articulated connection mode adopted by being represented by France and Spanish can be used for teaching, and the adoption of the single wheel set bogie is a thinking worthy of trying.

Around the development thought, several single-wheel-pair bogie technologies are applied at present, but most of the technologies are used in motor train units and are less applied to trailers, and the arrangement of the frames of the motor train unit bogies is not reasonable, for example, the traction points of traction rods are arranged higher, so that the whole force transmission of the frames is not facilitated; the suspension point span of the secondary suspension is smaller, and the support stability and the anti-rolling property of the vehicle body are insufficient; suspension maintenance difficulties, etc.

Disclosure of Invention

The embodiment of the application provides a single wheel pair bogie to solve traditional double wheel pair bogie dead weight height, maintenance cost height, noise big scheduling technical problem.

To solve the above technical problem, embodiments of the present application provide a single wheel pair trailer bogie, which includes:

the frame comprises side beams and end beams which are enclosed to form a 'mouth' -shaped structure, wherein the side beams are arranged in parallel along the running direction of the trailer, two ends of each end beam are horizontally and fixedly connected with two ends of each side beam respectively, the middle part of each end beam is sunken to form a U-shaped structure, a traction pull rod seat is arranged on each end beam of the frame, and a wheel set lifting installation seat is arranged on each side beam of the frame;

the wheel set box comprises a wheel set, an axle box and an axle, wherein the wheel set is connected with the axle box through the axle, and the axle box is connected with a wheel set lifting installation seat;

and the traction device is respectively connected with the traction pull rod seat and the trailer body.

The frame adopts a 'mouth' -shaped structure formed by the side beams and the end beams, so that the middle beam in the prior art is reduced, and the dead weight of the bogie frame is effectively reduced; the end beam adopts a large U-shaped structure, when the framework bears vertical load, the end beam of the large U-shaped structure can be bent and deformed to a certain extent, impact is alleviated, a flexible framework structure is realized, damage to the bogie framework running under complex road conditions for a long time is reduced, and the service life of the bogie framework is prolonged.

Preferably, the side beam is of a flat hollow box type structure formed by enclosing a side beam upper cover plate, a side beam lower cover plate, a side beam outer vertical plate and a side beam inner vertical plate, wherein an air inlet plug is arranged on the side beam outer vertical plate, and a water drainage plug is arranged on the side beam lower cover plate; the end beam is of a hollow structure formed by enclosing an end beam upper cover plate, an end beam lower cover plate, an end beam outer vertical plate and an end beam inner vertical plate, and a side beam inner rib plate and an end beam inner rib plate which are used for improving rigidity are respectively arranged in the side beam and the end beam. The hollow structure can further lighten the dead weight of the framework, and the design of the inner rib plates ensures the rigidity of the framework while lightening the dead weight.

Preferably, the bogie further comprises a secondary suspension, wherein the secondary suspension is an air spring and an antiserpentine shock absorber which are symmetrically arranged, the air spring is connected with a hollow spring seat plate arranged in the middle of an upper cover plate of the side beam, and the hollow spring seat plate is arranged in mirror symmetry by taking a central connecting line of an end beam as an axis; the anti-snake-shaped vibration damper is connected with an anti-snake-shaped vibration damper seat fixed in the middle of the side beam outer vertical plate, the anti-snake-shaped vibration damper seat is arranged in a mirror symmetry mode by taking the central connecting line of the end beam as an axis, and the air spring and the anti-snake-shaped vibration damper are both positioned on an extension line of the central connecting line of the side beam. The air springs are symmetrically arranged on the two end beams, the arrangement span is large, and the large support stability and the anti-rolling characteristic of the vehicle body are ensured.

Preferably, the secondary suspension further comprises transverse dampers, wherein the transverse dampers are connected with transverse damper mounting seats arranged on the outer sides of the end beam outer vertical plates, and the transverse damper mounting seats are symmetrically distributed on the two end beams in a central mode by taking the intersection point of the central connecting line of the side beams and the central connecting line of the end beams as the center. The transverse shock absorber is arranged at the diagonal position of the front and rear of the framework, is centrosymmetric, is fixed between the vehicle body and the framework through the mounting seat, and provides the snakelike resistance of part of the bogie on the basis of being capable of relieving transverse vibration.

Preferably, the secondary suspension further comprises a transverse stop, the transverse stop is connected with a transverse stop seat arranged on the outer side of the horizontal part of the upper cover plate of the end beam, and the transverse stop seat is symmetrically distributed on the two end beams by taking an intersection point of a central connecting line of the side beams and a central connecting line of the end beam as a center. The transverse stops are four and are arranged at the end beam positions of the bogie frame, so that the centering of the transverse movement of the bogie is ensured.

Preferably, the bogie further comprises a series of suspension devices, the series of suspension devices are conical metal rubber laminated springs, the conical metal rubber laminated springs are connected with a series of spring seats arranged on the lower cover plate of the side beam, and the series of spring seats are arranged in mirror symmetry with the central connecting line of the end beam as an axis. The conical rubber spring is simple in structure and simple in later maintenance, three-way positioning rigidity of the wheel set is provided, the rigidity of the rubber spring is reasonable, and excellent performance of the bogie can be ensured; the conical rubber springs are respectively connected with the framework and the wheel pair boxes through bolts.

Preferably, the number of the conical metal rubber laminated springs is four, correspondingly, the number of the first series of spring seats is also four, the first series of spring seats is divided into two pairs, a pair is arranged on the lower cover plate of each side beam, and the two first series of spring seats in each pair are symmetrically distributed in the longitudinal direction of the side beam by taking the central connecting line of the side beam as an axis. The four primary spring seats are arranged in a rectangular matrix.

Preferably, the traction device is a single-pull-rod low-position traction device and comprises a traction pull rod connected with a traction pull rod seat arranged on one end beam, and the traction pull rod seat is fixed at the lowest position of the U-shaped bent bottom edge of the inner vertical plate of the end beam. The traction points are different from the motor car steering frame in the prior art, are arranged on the inner side of the end beam of the framework, and are beneficial to the integral force transmission of the framework.

Preferably, on the U-shaped bottom edge of the end beam inner vertical plate provided with the traction pull rod fixing seat, a pair of steel wire rope hanging seats are symmetrically arranged on two sides of the traction pull rod seat and are used for connecting with a steel wire rope to lift.

Preferably, the bogie further comprises a wheel disc type tread braking device, the wheel disc type tread braking device comprises a braking wheel disc, a braking cylinder and braking clamps connected with the braking wheel disc and the braking cylinder, the braking cylinder is fixed on a braking hanging seat arranged on the outer side of a U-shaped bent vertical part of the lower cover plate of the end beam through bolts, the braking clamps are located on one side of a wheel set tread provided with the braking wheel disc in a side face concentrated hanging mode, and the braking hanging seats are symmetrically distributed on the two end beams in a central mode by taking an intersection point of a central connecting line of the side beams and a central connecting line of the end beam as a center.

Preferably, the bogie further comprises a double-torsion-bar anti-instability device, the double-torsion-bar anti-instability device comprises two torsion bars and four swing arms, wherein the torsion bars are located above the framework and between the vehicle body and the framework, the two torsion bars are arranged in parallel, two ends of each torsion bar are respectively connected with one ends of the two swing arms, the other ends of the four swing arms are connected with torsion bar supporting seats arranged on the outer side of the end beam outer vertical plate, the number of the torsion bar supporting seats is four, and the cross points of the central connecting lines of the side beams and the central connecting lines of the end beams are distributed on the two end beams in a central symmetry mode. The double torsion bar anti-instability device is used for balancing the bogie, is unstable in structure and is used for limiting the nodding vibration of the framework but not limiting the vertical floating movement and horizontal rotation functions of the vehicle body relative to the bogie.

Preferably, the bogie further comprises a framework measuring block, wherein the framework measuring block is fixed on the outer side of the upper cover plate of the side beam, and the framework measuring block is symmetrically distributed on the two side beams in a central mode by taking an intersection point of a central connecting line of the side beam and a central connecting line of the end beam as a center. The frame measurement block serves as a measurement reference for measuring the gap between the frame and the floor of the vehicle body.

Preferably, the bogie further comprises a wheel set stop device, wherein the wheel set stop device is connected with a wheel set vertical stop seat fixed at the middle position of the lower cover plate of the side beam, and the wheel set stop device is arranged in a mirror symmetry mode by taking the central connecting line of the end beam as an axis.

Preferably, the wheel set vertical stop seat, the drainage plug, the wheel set lifting installation seat and the anti-serpentine shock absorber installation seat are respectively provided with a pair, are respectively arranged on the central connecting lines of the two side beams in sequence from inside to outside, and are arranged in a mirror symmetry mode by taking the central connecting lines of the two side beams as axes.

Preferably, the bogie further comprises a height valve rod, the height valve rod is arranged on the outer side face of the side beam, a grounding seat is further arranged beside the height valve rod, the grounding seat is also arranged on the outer side face of the side beam where the height valve rod is located, and the height valve rod and the grounding seat are distributed in a central symmetry mode by taking an intersection point of a central connecting line of the side beam and a central connecting line of the end beam as a center.

By adopting the technical scheme, the embodiment of the application has the following technical effects:

1. the weight of the self-weight is lighter, in the integral mass of the bogie, the wheel set occupies a considerable proportion, the invention adopts a single wheel set design, one wheel set is reduced, the framework adopts a 'mouth' -shaped structure, the middle beam is removed, the framework adopts a hollow structure, the weight of the bogie is greatly reduced under the same structural size, and the dynamic performance of the bogie is improved;

2. the single wheel pair bogie has the most obvious advantages of more excellent performance compared with the traditional two-axle bogie, namely, the radial function of the wheel pair is easier to realize, so that the curve (especially a small radius curve) can pass through and the acting force and abrasion of the wheel track can be reduced; the single-wheel-pair bogie can avoid the adverse effect of adjacent wheel pairs of the same bogie; the number of the single-wheel-pair bogie wheel pairs is half of that of the common bogie wheel pairs, and the line excitation input of a vehicle system and the coupling effect among the wheel pairs are reduced by 50%, so that the vibration and noise caused by the coupling effect are reduced; in addition, the arrangement of the transverse shock absorbers may be capable of providing a portion of the bogie with anti-serpentine performance on the basis of providing relief from transverse vibrations, improving the stability of the vehicle body operation.

3. The maintenance is easier, and for the mechanical mechanism, the fewer the components are, the easier the maintenance is, and in the daily maintenance operation of the vehicle, most of the contents relate to wheel sets, so that the single wheel set structure can greatly reduce the maintenance cost and the overhaul workload; in addition, the large U-shaped structure of the framework end beam can alleviate impact, realize a flexible framework structure, reduce damage to the bogie framework running under complex road conditions for a long time, and reduce maintenance times and maintenance cost.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic diagram of a front structure of an embodiment of the present application;

FIG. 2 is a schematic view of the reverse structure of an embodiment of the present application;

FIG. 3 is a schematic elevational view of the bogie frame;

FIG. 4 is a schematic view of the reverse side construction of the bogie frame;

FIG. 5 is a schematic view of a frame end beam structure;

FIG. 6 is a schematic view of a side frame construction of a frame;

FIG. 7 is a schematic view of a brake shoe construction;

FIG. 8 is a schematic view of a wheel set assembly;

FIG. 9 is a schematic structural view of a torsion bar anti-destabilizing device.

Reference numerals:

100-side beams, 101-side beam upper cover plates, 102-side beam lower cover plates, 103-side beam outer vertical plates, 104-side beam inner vertical plates and 105-side beam inner rib plates; 106-the air inlet plug is connected with the air inlet pipe, 107-drain plug, 108-frame gauge block, 109-antiserpentine damper mount, 110-air spring seat plate, 111-wheel set lift mount, 112-wheel set vertical stop mount, 113-primary spring seat mount, 114-ground mount, 115-height valve stem mount, 200-end beam, 201-end beam upper cover plate, 202-end beam lower cover plate, 203-end beam outer riser, 204-end beam inner riser, 205-end beam inner web, 206-lateral damper mount, 207-lateral stop mount, 208-dual torsion bar support mount, 209-brake mount, 210-traction lever mount, 211-wire rope mount, 2091-brake mount panel, 2092-brake mount connection post, 2093-brake mount riser, 2094-brake mount web, 2090-brake mount connection post, 300-wheel set axle housing, 301-wheel set, 302-axle housing, 303-axle housing, 400-conical metal rubber spring, 500-secondary suspension device, 501-air spring, 502-antivibration damper, 502-torsion bar, 600-swing arm, 801-suspension device, torsion bar, damping device 900-suspension device, and torsion bar device, damping device 900-suspension device, antivibration device, and method

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some of the embodiments of the present application and not exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Because the components of the trailer bogie are more, the structure of each part is partially improved, and the arrangement positions of the parts are optimally designed in order to achieve the aims of reducing dead weight and improving performance in a limited space. Since most of the components are fixed or mounted on the frame, in order to clearly and clearly illustrate this, in this embodiment, the structure of the frame and the positional arrangement of the respective device connection structures will be described first.

The bogie frame as shown in fig. 3 to 6, the single wheel pair trailer bogie frame as shown in fig. 1 and 2 comprises two side beams 100 of hollow box type structure and two end beams 200 of hollow structure as well, wherein the side beams 100 are arranged in parallel along the running direction of the trailer, and the end beams 200 are arranged in mirror symmetry with the central connecting line of the side beams 100 as an axis. The middle portion of the end beam 200 is bent downward to form a "U" shaped structure, the opening of the upper end of the "U" shaped bend of the end beam 200 extends horizontally to both outer sides of the opening and is fixedly connected with the side members 100, respectively, and the bottom of the "U" shaped bend of the end beam 200 extends horizontally parallel to the opening thereof. As a whole, the side members 100 and the end members 200 are surrounded in a "mouth" shape as viewed perpendicularly to the horizontal plane.

The end beam 200 is formed by enclosing an end beam upper cover plate 201, an end beam lower cover plate 202, an end beam outer vertical plate 203 and an end beam inner vertical plate 204, and the inside is hollow; wherein, the two ends of the end beam outer vertical plate 203 are longer than the end beam inner vertical plate 204, and the long parts extend outwards for being connected with the side beam 100; a plurality of end beam inner rib plates 205 are arranged in the hollow inner cavity of the end beam 200, and the periphery of the end beam inner rib plates 205 are respectively connected with an end beam upper cover plate 201, an end beam lower cover plate 202, an end beam outer vertical plate 203 and an end beam inner vertical plate 204.

The side beam 100 is of a flat hollow box type structure and is formed by enclosing a side beam upper cover plate 101, a side beam lower cover plate 102, a side beam outer vertical plate 103 and a side beam inner vertical plate 104, and a side beam inner rib plate 105 is arranged in the side beam inner vertical plate; an air inlet plug 106 is arranged on the side beam outer vertical plate 103, and a drain plug 107 is arranged on the side beam lower cover plate 102. When the air inlet plug 106 is opened, external air can enter a cavity formed between the side beam upper cover plate 101 and the side beam lower cover plate 102 through the air inlet plug 106; through this cavity, into an air spring attached to the frame. The drain plug 107 is used to drain the accumulated water in the cavity when the drain is needed.

In order to ensure smooth and steady running of the railway vehicle, the trailer bogie used at present is provided with various components besides a traction rod which is required to be connected with the vehicle and a wheel set lifting device for lifting the wheel set, and correspondingly, various components are required to be arranged on a trailer bogie frame for installation or connection structure. In the present invention, in order to adapt the frame main structure surrounded by the side members 100 and the end members 200, the distribution and arrangement positions of the attachment or connection structures of the various members are adaptively adjusted.

The mounting or connecting structure on the end beam is provided specifically as follows:

the end beams 200 are provided with two transverse shock absorber installation seats 206, two transverse stop seats 207, two torsion bar support seats 208, a brake hanging seat 209 and a traction pull rod seat 210, wherein one transverse shock absorber installation seat 206 is arranged on each end beam, the two transverse shock absorber installation seats are fixed on the outer side of the end beam outer vertical plate 203 and are positioned on the outward horizontal extension of the opening of the upper side of the U-shaped bend of the end beam 200, and the two transverse shock absorber installation seats 206 are distributed in a central symmetry mode by taking the intersection point of the central connecting line of the side beams and the central connecting line of the end beams as the center.

Four transverse stop seats 207 are arranged on each end beam, two transverse stop seats are fixed on the outer side of the end beam upper cover plate 201 and positioned on the outward horizontal extension of the opening of the upper side of the U-shaped bend of the end beam 200, and the transverse stop seats are symmetrically distributed on the two end beams in a central mode by taking the intersection point of the central connecting line of the side beams and the central connecting line of the end beams as the center.

The two torsion bar supporting seats 208 are also four, two are arranged on each end beam, are all fixed on the end beam outer vertical plate 203 and are positioned on the vertical edge of the U-shaped bend of the end beam 200, and are distributed on the two end beams in a central symmetry way by taking the intersection point of the central connecting line of the side beams and the central connecting line of the end beams as the center.

One of the end beams is provided with a steel wire rope hanging seat 211 and a traction pull rod seat 210, wherein the traction pull rod seat 210 is fixed on the outer side of the inner vertical plate 204 of the end beam and is positioned at the lowest side of the U-shaped bent bottom of the end beam 200; the wire rope sling 211 is also positioned at the U-shaped bent bottom edge of the end beam inner riser and symmetrically positioned on both sides of the drawbar holder 210.

The two brake hanging seats 209 are arranged on each end beam, are fixed on the outer side of the end beam lower cover plate 202, are positioned at the position where the vertical edge of the U-shaped bend of the end beam 200 is combined with the bottom edge of the U-shaped bend, and are symmetrically distributed with the intersection point of the central connecting line of the side beams and the central connecting line of the end beam as the center.

In this embodiment, as shown in fig. 7, the structure of the brake hanger 209 is a special design adapted to the frame body, and it includes one brake hanger panel 2091, two brake hanger vertical plates 2093 and two brake hanger rib plates 2094, wherein the brake hanger panel 2091 is an L-shaped panel structure, and the front surface thereof is provided with a brake hanger connecting post 2092; the two brake hanger plates 2093 are mounted perpendicular to the back surface of the brake hanger panel 2091, the two brake hanger plates 2093 are arranged on the vertical plate part of the L-shaped brake hanger panel 2091, and the contour line of the brake hanger plate 2093 is formed by enclosing a straight line mounted with the brake hanger panel 2091, a curve matched with the side edge of the U-shaped bend of the end beam and the horizontal part of the upper end of the U-shaped bend, and a curve connecting the two curves; one of the brake shoe rib plates 2094 is disposed between the two brake shoe risers 2093, and the other is disposed between the brake shoe risers 2093 and the back of the brake shoe panel 2091.

The mounting or connecting structure arrangement on the side member 100 is specifically as follows:

the side beams 100 are provided with a framework measuring block 108, an antiserpentine shock absorber seat 109, an air spring seat plate 110, a wheel set lifting installation seat 111, a wheel set vertical stop seat 112 and a series of spring seats 113, wherein the number of the framework measuring blocks 108 is two, each side beam 100 is provided with one framework measuring block and is fixed on the outer side of the side beam upper cover plate 101, and the framework measuring blocks are symmetrically distributed on the two side beams by taking the intersection point of the central connecting line of the side beams and the central connecting line of the end beams as the center.

Two anti-serpentine shock absorber seats 109 are arranged, one on each side beam 100 and fixed in the middle of the side beam outer vertical plate 103, and are arranged in a mirror symmetry way by taking the central connecting line of the end beams 200 as an axis;

two air spring seat plates 110 are arranged, one is arranged on each side beam 100 and is fixed in the middle position of the side beam upper cover plate 101, and the two air spring seat plates are arranged in a mirror symmetry way by taking the central connecting line of the end beams 200 as an axis;

two wheel set lifting installation seats 111 are arranged, one is arranged on each side beam 100 and is fixed at the middle position of the side beam lower cover plate 102, and the wheel set lifting installation seats are arranged in mirror symmetry by taking the central connecting line of the end beams 200 as an axis;

two wheel set vertical stop seats 112 are arranged, one is arranged on each side beam 100, and the two vertical stop seats are fixed at the middle position of the side beam lower cover plate 102 and are arranged in mirror symmetry by taking the central connecting line of the end beam 200 as an axis;

the wheel set lifting mounting seat 111, the wheel set vertical stop seat 112 and the drain plug 107 are arranged in the direction of the central connecting line of the side beam 100, wherein the wheel set vertical stop seat 112 is positioned on the inner side, the wheel set lifting mounting seat 111 is positioned on the outer side, and the drain plug 107 is positioned between the wheel set vertical stop seat 112 and the wheel set lifting mounting seat 111. The antiserpentine shock absorber mount 109 is also located in the center line direction of the side beam 100.

The four spring seats 113 are divided into two pairs, and are fixed on the side beam lower cover plate 102, a pair is arranged on each side beam 100, and the two spring seats 113 in each pair are symmetrically distributed on two sides of the wheel pair vertical stop seat 112 along the longitudinal direction of the side beam 100; the two pairs of the spring seats 113 are arranged in mirror symmetry with the central connecting line of the end beam 200 as an axis, and the connecting line of the central points of the spring seats 113 also forms a shape of a Chinese character 'kou'.

The outer vertical plate of the side beam 100 is further provided with a grounding seat 114 and a height valve rod mounting seat 115, and the height valve rod mounting seat 115 and the grounding seat 114 are distributed in a central symmetry manner by taking an intersection point of a central connecting line of the side beam and a central connecting line of the end beam as a center.

After the frame structure is clearly described, the following description is given of the respective main components and devices of the bogie:

in addition to the frame, as shown in fig. 8, the trailer bogie of the present invention further includes a wheelset box assembly 300, a tapered metal rubber laminated spring 400 as a primary suspension, a secondary suspension 500, a traction device 600, a brake device 700, and a double torsion bar anti-destabilization device 800. The wheel set and axle box assembly comprises a wheel set 301, an axle box 302 and an axle 303, wherein the wheel set 301 is connected with the axle box 302 through the axle 303, the two axle boxes 302 are respectively arranged on the outer sides of the two wheels and at two ends of the axle 303, and the two axle boxes 302 are respectively connected with two wheel set lifting installation seats 111 symmetrically arranged on the bottom surface of the side beam 100. The cone-shaped metal rubber laminated spring 400 has four seats respectively connected to a series of spring seats 113 provided on the lower cover plate of the side member, and a metal core (or referred to as a metal inner ring, a positioning pin structure, etc.) connected to the axle housing 302 by a bolt structure.

The secondary suspension device 500 includes two air springs 501, antiserpentine dampers 502, transverse dampers 503 and transverse stoppers 504, wherein the two air springs 501 are respectively connected with the air spring seat plates 110 arranged in the middle of the upper cover plate of the side beam 100, the air spring seat plates 110 are arranged in mirror symmetry by taking the central connecting line of the end beam 200 as an axis and are positioned on the central connecting line of the side beam 100 near the outer edge of the side beam 100, in order to enlarge the span of the air springs 501, the outer edge of the side beam 100 protrudes outwards, namely the upper cover plate 101 and the lower cover plate 102 of the side beam are in trapezoid structures (taking the inner edge of the side beam as the bottom edge), the center of the air spring seat plates 110 is provided with vent holes, and correspondingly, the upper cover plate 101 of the side beam corresponding to the central position of the air spring seat plates 110 is also provided with through holes. The two anti-serpentine damper 502 are respectively connected with the anti-serpentine damper seat 109 fixed in the middle of the side beam outer vertical plate 103, and the air spring 501 and the anti-serpentine damper 502 are positioned on the extension line of the center line of the side beam. The two lateral dampers 503 are also connected to the two lateral damper mounting bases 206, and are distributed in a central symmetry manner with the intersection point where the central line of the side beam and the central line of the end beam intersect as the center. The four transverse stops 504 are respectively connected with the corresponding transverse stop seats 207, and the connecting line of the central points of the transverse stop seats 207 is shaped like a Chinese character 'kou'.

The traction device 600 is a single-pull-rod low-position traction device and comprises a traction pull rod, one end of the traction pull rod is connected with the traction pull rod seat 210, and the other end of the traction pull rod is connected with a trailer body.

The brake device 700 is a wheel-disc type tread brake device, in this embodiment, two sets of wheel-disc type tread brake devices are adopted, each set of brake device comprises a brake wheel disc, a brake cylinder 701 and a brake clamp connected with the brake wheel disc and the brake cylinder, the brake cylinder 701 is fixed on the brake hanger 209 through bolts, and the brake clamp is located on one side of the wheel set tread provided with the brake disc in a mode of side centralized hanging.

As shown in fig. 9, the dual torsion bar anti-instability device 800 includes two torsion bars 801 and four swing arms 802, wherein the torsion bars 801 are located above the frame, between the vehicle body and the frame, the two torsion bars 801 are arranged in parallel, two ends of each torsion bar are respectively elastically connected with one end of one swing arm, and the other ends of the four swing arms are respectively connected with four torsion bar supporting seats 208.

In addition, the truck of the present invention includes a wheel set stop disposed on the wheel set vertical stop 112 and a height valve stem 900 connected to the Gao Dufa stem mount 115.

In the description of the present application and its embodiments, it should be understood that the terms "top," "bottom," "height," and the like indicate an orientation or positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

In this application and in its embodiments, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed, unless otherwise explicitly stated and defined as such; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application and in its embodiments, unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the present application. The components and arrangements of specific examples are described above in order to simplify the disclosure of this application. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (15)

1. A single wheel set trailer truck, the single wheel set trailer truck comprising:

the frame comprises side beams and end beams which are enclosed into a 'mouth' -shaped structure, wherein the side beams are arranged in parallel along the running direction of a trailer, two ends of each end beam are horizontally and fixedly connected with two ends of each side beam respectively, the middle part of each end beam is sunken into a U-shaped structure, a traction pull rod seat is arranged on each end beam of the frame, and a wheel set lifting installation seat is arranged on each side beam of the frame;

the wheel set box comprises a wheel set, an axle box and an axle, wherein the wheel set is connected with the axle box through the axle, and the axle box is connected with the wheel set lifting installation seat;

the traction device is respectively connected with the traction rod seat and the trailer body;

each end beam is provided with one brake hanging seat, is fixed on the outer side of the lower cover plate of the end beam and is positioned at the position where the vertical edge of the U-shaped bend of the end beam is combined with the bottom edge of the U-shaped bend;

the brake hanging seat comprises a brake hanging seat panel, two brake hanging seat vertical plates and two brake hanging seat rib plates, wherein the brake hanging seat panel is of an L-shaped panel structure, and a brake hanging seat connecting column is arranged on the front surface of the brake hanging seat panel; the two brake hanging seat vertical plates are arranged perpendicular to the back surface of the brake hanging seat panel, are arranged on the vertical plate part of the L-shaped brake hanging seat panel, and the contour line of the brake hanging seat vertical plate is formed by encircling a straight line arranged on the brake hanging seat panel, a curve matched with the side edge of the U-shaped bend of the end beam and the horizontal part of the upper end and a curve connecting the two curves; one of the brake hanging seat rib plates is arranged between the two brake hanging seat vertical plates, and the other brake hanging seat rib plate is arranged between the brake hanging seat vertical plate and the back surface of the brake hanging seat panel.

2. The bogie of single wheel pair trailer according to claim 1, wherein the side beam is a flat hollow box structure surrounded by a side beam upper cover plate, a side beam lower cover plate, a side beam outer vertical plate and a side beam inner vertical plate, an air inlet plug is arranged on the side beam outer vertical plate, and a water drainage plug is arranged on the side beam lower cover plate; the end beam is of a hollow structure formed by enclosing an end beam upper cover plate, an end beam lower cover plate, an end beam outer vertical plate and an end beam inner vertical plate, and side beam inner rib plates and end beam inner rib plates used for improving rigidity are respectively arranged in the side beam and the end beam.

3. The single wheel set trailer bogie of claim 2, further comprising a secondary suspension device, wherein the secondary suspension device is an air spring and an antiserpentine shock absorber which are symmetrically arranged, the air spring is connected with a hollow spring seat plate arranged in the middle of an upper cover plate of the side beam, and the hollow spring seat plate is arranged in a mirror symmetry manner by taking a central connecting line of the end beam as an axis; the anti-snake-shaped vibration damper is connected with an anti-snake-shaped vibration damper seat fixed in the middle of the side beam outer vertical plate, the anti-snake-shaped vibration damper seat is arranged in a mirror symmetry mode by taking the central connecting line of the end beam as an axis, and the air spring and the anti-snake-shaped vibration damper are both positioned on an extension line of the central connecting line of the side beam.

4. A monocycle trailer bogie as claimed in claim 3 in which the secondary suspension means further comprises transverse dampers connected to transverse damper mounts provided on the outside of the end beam outer risers, the transverse damper mounts being symmetrically distributed on the end beams centred on the intersection of the centre line of the side beams and the centre line of the end beams.

5. The monocycle trailer bogie of claim 4, wherein the secondary suspension further comprises transverse stops connected to transverse stop seats provided on the outside of the horizontal portion of the upper deck of the end beams, said transverse stop seats being distributed on the end beams in a centrosymmetric manner about the intersection point where the centreline of the side beams and the centreline of the end beams meet.

6. The monocycle trailer bogie of claim 2, further comprising a series of suspension devices, the series of suspension devices being conical metal rubber laminated springs connected with a series of spring seats provided on the side sill lower cover plates, the series of spring seats being arranged mirror-symmetrically about a center line of the end sill.

7. The bogie of single wheel set trailer according to claim 6, wherein the number of the conical metal rubber laminated springs is four, correspondingly, the number of the spring seats of the series is four, the spring seats of the series are divided into two pairs, a pair is arranged on the lower cover plate of each side beam, and the two spring seats of each pair are symmetrically distributed on the longitudinal direction of the side beam by taking the central connecting line of the side beam as an axis.

8. The single wheel set trailer truck of claim 2 wherein the draft gear is a single pull rod low draft gear comprising a draft rod connected to a draft rod seat provided on one of the end beams, the draft rod seat being secured to the lowermost U-bend bottom edge of the end beam inner riser.

9. The single wheel pair trailer truck of claim 8, wherein: and on the U-shaped bent bottom edge of the end beam inner vertical plate provided with the traction pull rod seat, a pair of steel wire rope hanging seats are symmetrically arranged on two sides of the traction pull rod seat and are used for connecting with a steel wire rope to lift and hang.

10. The single wheel set trailer bogie as claimed in claim 2, further comprising a wheel disc type tread braking device, wherein the wheel disc type tread braking device comprises a brake wheel disc, a brake cylinder and a brake clamp connected with the brake wheel disc and the brake cylinder, the brake cylinder is fixed on a brake hanger arranged on the outer side of the U-shaped bent vertical part of the end beam lower cover plate through bolts, the brake clamp is arranged on one side of the wheel set tread provided with the brake disc in a side face concentrated hanging mode, and the brake hanger is symmetrically distributed on the two end beams centering on an intersection point of the central connecting line of the side beams and the central connecting line of the end beams.

11. The single wheel pair trailer bogie as claimed in claim 2, further comprising a double torsion bar anti-instability device, wherein the double torsion bar anti-instability device comprises two torsion bars and four swing arms, the torsion bars are located above the framework and are located between the vehicle body and the framework, the two torsion bars are arranged in parallel, two ends of each torsion bar are respectively elastically connected with one end of one swing arm, the other ends of the four swing arms are connected with torsion bar supporting seats arranged on the outer side of the end beam outer vertical plate, and the four torsion bar supporting seats are symmetrically distributed on the two end beams in a central mode by taking an intersection point of a central connecting line of the side beams and a central connecting line of the end beam as a center.

12. The monocycle trailer bogie of claim 2, further comprising a frame measurement block fixed outside the side sill upper cover plate and distributed on both side sills in central symmetry with the intersection point where the central line of the side sills and the central line of the end sills intersect as the center.

13. The single wheel set trailer truck of any one of claims 3-5 further comprising wheel set stop means connected to wheel set vertical stop seats fixed in the middle of the side sill lower cover plate and disposed in mirror symmetry about the center line of the end sill.

14. The single wheel set trailer truck of claim 13, wherein the wheel set vertical stop, drain plug, wheel set lifting mount and antiserpentine damper mount are each a pair of arranged sequentially from inside to outside on the center line of the two side beams and are arranged in mirror symmetry about the center line of the two side beams.

15. The single wheel pair trailer bogie as claimed in claim 2, further comprising a height valve rod, wherein the height valve rod is disposed on an outer side surface of the side beam, a grounding seat is disposed beside the height valve rod, the grounding seat is also disposed on the outer side surface of the side beam where the height valve rod is located, and the height valve rod and the grounding seat are distributed in a central symmetry manner with an intersection point where a central connecting line of the side beam and a central connecting line of the end beam intersect as a center.

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