CN209290411U - A kind of built-in bogie of high-speed railway lorry axle box - Google Patents

Abstract

The utility model discloses a kind of built-in bogies of high-speed railway lorry axle box, using H-shaped monoblock type framework and built-in axle, are provided on framework and snakelike damper and two is resisted to be lateral damper；Resist snakelike damper longitudinally connected in framework side frame two sides, two be that lateral damper is connected laterally at framework needle beam end, and brakes using reel.The bogie primary-suspension is positioned using axle box swivel arm, and match wheel improves intact stability to cross-braced device.The bogie compares traditional lorry and adds torsion bar mechanism for preventing side rolling of train carriage, solves the problems, such as that its secondary suspension provides anti-side rolling scarce capacity.The utility model has that the speed of service is unable to satisfy demand existing roller bearing adapter stabilizer bar, designs a kind of bogie for high-speed rail wagon overall plan for meeting cargo transport current demand.This programme is based on the built-in integral frame structure bogie of axle box, and the anti-serpentine locomotion performance and robust motion when being run by improving are to improve its threshold speed.

Description

A kind of built-in bogie of high-speed railway lorry axle box

Technical field

The utility model belongs to technical field of rail traffic.In particular it relates to a kind of axis applied to high-speed railway lorry The built-in bogie of case.

Background technique

In world wide, there are mainly two types of modes for existing roller bearing adapter stabilizer bar.North America, Asia, South Africa etc. area country with Based on three-piece bogie, European countries are then based on integral frame formula bogie.It finds, improves in the development of bogie The requirement of bogie movement vibration stability and the requirement for improving bogie curving performance are often conflicting.Using Radial steering is to solve contradictory effective measures between stability and curve negotiation ability.Wherein, it succeeds and throws earliest Enter to use the Scheffel pair framework self steering bogie of South Africa railway.The bogie with 1 bow beam by every wheel pair The left and right sides link together, form a secondary framework；Front and back pair framework is contacted one with 2 Cross Braced connecting rods again It rises, formation self guide mechanism and the U.S. DR-1 type bogie that only radial direction mechanism is different from.These three-piece bogies are all There is the good wheel load ability of equalization, can preferably adapt to the irregularity of route.But their axle box is located at wheel to outside, It is unfavorable for mitigating self weight；And rigidity of shaking the head is larger, is not easy to pass through sharp radius curve.The LEILA bogie in Europe is using whole Body welded frame formula, radial device are to be connected between axle box with decussation connecting rod.Integral frame formula bogie and three Big part formula bogie is compared, and has the advantages that diamonding will not be generated, but also reduce the adaptation energy of guideway irregularity simultaneously Power.LEILA bogie is the built-in bogie of axle box, and rigidity of shaking the head is small, is conducive to passing through for sharp radius curve；Meanwhile With lesser self weight, compared with Y25 bogie, weight reduces about 1/5.The shortcomings that inside axle box hanging bogie is inconvenient It in maintenance and overhauls, therefore higher to the life requirements of axle box.

In China, three-piece bogie early stage, which has, turns 8A type bogie, and there are diamond resistant rigidities that low, diamond shape becomes for the bogie The problems such as shape is big, pillow spring empty wagons natural bow is less than normal.What the later period developed again turns 8AG type, turns K1 type, turns K2 type and turn K6 type turn It is to have installed elastic cross-braced device additional on the basis of turning 8A type bogie, to increase the shear stiffness of bogie to frame And diamond resistant rigidity.Turn K4 type and Zhuan K5 bogie is then swing type bogie, is also to increase diamond resistant rigidity.It is whole Body bogie with welding frame, although completely eliminating water chestnut change, is also reduced simultaneously to line using turning K3 bogie as representative The adaptability on road, this is also integral welding frame bogie common problem.Radial roller bearing adapter stabilizer bar occurs in China Than later, mainly have and turn K7 type and some bogies having developed but do not put into utilization, and these bogies are three big Part formula radial steering.The research of China's bogie built-in for axle box is very few, and blank is belonged on engineer application.

Along with the rapid development of China's national economy, resource flow increases sharply, and traffic transport industry is quickly grown, The railway transportation of king as land transportation also takes on increasingly increased pressure.China also pays close attention to railway transportation, and Some colleges and universities and enterprise are supported to carry out correlative study.By 5 speed raisings, preferably, speed is obviously improved for passenger train development；And Comparatively lorry develops relatively slowly, traditional quick lorry speed of service only has 160km/h mostly.Both passenger and freights are not With the problem of become increasingly conspicuous, and basis of the shipping as the support national economic development, its development becomes more crucial.Bogie The runnability of rolling stock is directly affected, for the benefit of high speed without repeating, its development and research seems increasingly important.

Critical component of the bogie as rail truck, for a long time, rolling stock is due to by operation stability, toppling The restriction of the factors such as safety and bearing maintenance, mainly using the mode of external axle box suspension.With the rail truck speed of service Continuous improvement, to lightweight, low wheel-rail force of bogie etc., more stringent requirements are proposed.Research shows that: with external axis Case suspension bogie is compared, and the built-in bogie of axle box can be effectively reduced the quality of wheel pair and framework, to show its tool There is light-weight, the excellent excellent kinetic character of curving performance.However, it is limited by the short inherent shortcoming of axle box span, it is existing The speed of service of the built-in roller bearing adapter stabilizer bar LEILA of the quick axle box having also only has 120km/h, is unable to satisfy showing for cargo transport Real demand.

Utility model content

The purpose of this utility model is that: for present in the built-in bogie of existing axle box of railway wagon, operation is fast The problem of degree critical value has been unable to satisfy the current demand of cargo transport, provides a kind of built-in steering of high-speed railway lorry axle box Frame.This programme is based on the built-in integral frame structure bogie of axle box, by improving anti-serpentine locomotion performance when running And robust motion designs a kind of high-speed railway lorry for meeting cargo transport current demand turn to improve its threshold speed To frame overall plan.

To achieve the goals above, the technical solution adopted in the utility model are as follows:

A kind of built-in bogie of high-speed railway lorry axle box, using H-shaped monoblock type framework and built-in axle, on framework It is provided with and resists snakelike damper and two to be lateral damper for what is be connected with car body；Snakelike damper is resisted to be connected to framework side frame Two sides, and resist snakelike damper longitudinally disposed along bogie；Two be that lateral damper is connected to framework needle beam end, and two systems Lateral damper is laterally arranged along bogie；Using reel mode of braking, brake disc is mounted on axle, and brake unit is mounted on On framework needle beam.This programme uses H-shaped monoblock type framework and built-in axle, realizes lightweight and low wheel-rail force. On this basis, this programme, which also uses, resists snakelike damper to be used to improve vehicle snaking motion stability and stationarity, while again Do not reduce curve negotiation ability.It is that lateral damper is used to that reduce two be oscillation crosswise that this programme, which also uses two, and decay vibrational energy Amount.In conclusion this programme effectively improves the stationarity and movement of vehicle snaking motion under the premise of realizing light-weighted Stationarity, so as to improve the critical speed of vehicle operation.

Preferably, wheel is additionally provided with to cross-braced device, and wheel is to cross-braced device using two wheels to steady The mode for determining pull rod arranged crosswise, will be two interconnected in the axle box two being diagonally distributed.The wheel facilitates cross-braced device Enhancing wheel effectively improves the curve negotiation ability of vehicle to the stability on straight line and curve.

It preferably, is that steel spring connects by pivoted arm and one using pivoted arm axle box, axle box and framework side frame end portion It connects, steel spring rigidity is two-stage.The bogie primary-suspension is positioned using axle box swivel arm, and axle box swivel arm and one is two stage stiffness steel Spring is used to mitigate together vertical impact, constrains vertically and horizontally movement and transmitting cross force between axle box and bogie.Pass through increasing Big one is longitudinal rigidity, enhances the lateral stability of bogie.Also, pivoted arm positioning method has high-speed operating characteristic.

Preferably, it is vertical damper that one is provided between axle box and frame end.Reducing one is vertical vibration, To vibrational energy of decaying.

Preferably, being provided on framework cross bearer for being connected with car body two is rubber metal pad spring.For even Body and framework are picked up, the excitation from wheel pair is mitigated, helps to improve the stability of vehicle (especially car body).

Preferably, it is additionally provided with torsion bar mechanism for preventing side rolling of train carriage, torsion bar mechanism for preventing side rolling of train carriage is by torsion bar, torsion bar arm and connecting rod Composition；Torsion bar passes through hollow needle beam, and torsion bar both ends are located at framework side frame two sides；Torsion bar both ends are connected with torsion bar arm, and Torsion bar arm is longitudinally disposed along bogie；Torsion bar arm end is connected with the connecting rod for being connected with car body, and connecting rod hangs down along bogie To setting.What this programme can limit car body sidewinders angle, keeps the plunging motion of car body unaffected.

Preferably, two are provided on framework side frame is vertical backstop.When vehicle passes through curve track, be conducive to Limitation car body sidewinders to greatest extent, to improve curve passing through passage capacity.

Preferably, two system's transverse direction backstops are provided on framework side frame.When vehicle passes through curve track, be conducive to Cross-car displacement is limited to greatest extent, to improve curve passing through passage capacity.

Preferably, the drawing pull bar for being connected with car body is provided on framework cross bearer.For connecting framework With car body, the longitudinal force from bogie is transmitted to car body.

Preferably, using hole-bored axle from end to end, it is provided with brake disc seat on hole-bored axle from end to end, is provided for installing brake disc Brake force.Railway freight-car is usually solid shafting, since this programme is a kind of roller bearing adapter stabilizer bar of high speed, therefore using hollow Axis is conducive to mitigate quality and high-speed cruising.

In conclusion by adopting the above-described technical solution, compared with the prior art, the beneficial effects of the utility model It is:

Firstly, the bogie in such a way that axle box swivel arm positions and takes turns to cross support, reduces single stage suspension positioning Longitudinal rigidity effectively increases curve passing through handling capacity.Meanwhile the bogie uses H-shaped monoblock type framework, resists snakelike vibration damping Device and two is lateral damper, the stationarity and robust motion of vehicle snaking motion is effectively improved, to improve vehicle Operation critical speed, to reach the higher speed of service.The bogie primary is fixed using two stage stiffness steel spring and pivoted arm The mode of position, two systems use rubber metal pad, while being equipped with one is vertical damper, belongs to high-speed freight car bogie scope, is being transported It has a clear superiority when defeated some high value added products.

Secondly, the bogie adds torsion bar mechanism for preventing side rolling of train carriage under the premise of two be that rubber spring span is shorter, solve Its secondary suspension provides the problem of anti-side rolling scarce capacity.It is vertical backstop, drawing pull bar, wheel that the bogie, which is also devised with two, To cross-braced device, the curving performance of lorry is obviously improved, especially torsion bar mechanism for preventing side rolling of train carriage is vertical with two Stop device overcomes the problem of the built-in truck car resistance to capsizing deficiency of axle box, is railway goods train bogie one kind Bold trial and innovation.

Again, which realizes high-speed cruising on the basis of built-in axle.The built-in roller bearing adapter stabilizer bar of axle box Compared with traditional outer axle box roller bearing adapter stabilizer bar, lightweight and low wheel-rail force are realized.Transportation cost is reduced, is obtained Better economy.The bogie also uses hole-bored axle from end to end technology.With the mitigation of quality, active force is reduced between wheel track, is improved Dynamics of vehicle performance, reduces the abrasion between wheel track, reduces running noises and environmental pollution, increase wheel to and rail Service life, reduce maintenance cost.

Refer to finally, the bogie goes for lateral stability identical with traditional lorry using the built-in scheme of axle box Mark is mainly longitudinal rigidity by increasing one, but increasing one is that longitudinal rigidity will lead to curving performance variation, we Case, to cross-braced device, enhances lateral stability while effectively improving the curve negotiation ability of vehicle using wheel.By In using the built-in design of axle box, it is more advantageous to the placement of the wheel to cross-braced device of this programme, is efficiently reduced The longitudinal rigidity of single stage suspension is conducive to vehicle traveling comfort, has combined the curve negotiating of vehicle.

Detailed description of the invention

Fig. 1 is the schematic perspective view one of embodiment.

Fig. 2 is the schematic perspective view two of embodiment.

Fig. 3 is the overlooking structure diagram of embodiment.

Fig. 4 is the present invention looks up structural representation of embodiment.

Fig. 5 is the schematic view of the front view of embodiment.

Fig. 6 is the side structure schematic view of embodiment.

Fig. 7 is the schematic perspective view one of framework.

Fig. 8 is the schematic perspective view two of framework.

Fig. 9 is the schematic perspective view one of axle box.

Figure 10 is the schematic perspective view two of axle box.

Figure 11 is the schematic perspective view taken turns to cross-braced device.

Figure 12 is that snakelike damper, two is resisted to be lateral damper and one is the schematic perspective view of vertical damper.

Figure 13 is the schematic perspective view of torsion bar mechanism for preventing side rolling of train carriage.

Figure 14 is the schematic perspective view of drawing pull bar.

Component corresponding to label in attached drawing: 1- wheel to, 2- axle box, 21- pivoted arm, 3- brake disc, 4- brake unit, 5- One be two stage stiffness steel spring, 6- framework, 61- side frame, 62- needle beam, 63- cross bearer, 7- mono- is vertical damper, bis- system of 8- It is vertical backstop, 13- that rubber metal pad spring, 9- bis-, which are lateral damper, 10- anti-hunting damper holder, 11- drawing pull bar, 12- bis-, Two system's transverse direction backstops, 14- torsion bar mechanism for preventing side rolling of train carriage, 141- torsion bar, 142- torsion bar arm, 143- connecting rod, 15- wheel fill cross support It sets.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

Present embodiment discloses a kind of built-in bogies of high-speed railway lorry axle box to constitute the steering as shown in figures 1 to 6 The main component of frame has: wheel to, axle box, brake disc, brake unit, one be two stage stiffness steel spring, framework, one be Vertical Vibration Reduction Device, two be rubber metal pad spring, two be lateral damper, anti-hunting damper holder, drawing pull bar, two be that vertical backstop, two systems are lateral Backstop, torsion bar mechanism for preventing side rolling of train carriage, wheel are to cross-braced device.

The overall welding type framework of existing bogie, inside axle box are hung and are taken turns and mutually tied to radial three kinds of technologies by the present embodiment It closes, proposes the excellent bogie overall plan of comprehensive performance, analyze its dynamic performance with important engineering significance.Currently, interior The bogie of axle box suspension does not begin to use in China, for the research also almost blank of the bogie of inside axle box suspension. This programme is based on the bogie with welding frame that inside axle box is hung, then merges wheel to radial coupling technique, designs a kind of fast Fast roller bearing adapter stabilizer bar overall plan, and its dynamic performance is carried out more deeply and systematic research, there is apparent innovation Property.

The connection type and action principle of each main component are specifically described below, make those skilled in the art to reach The purpose that member can be implemented by reading the embodiment.As represented in figures 1 through 14, specifically:

(1) as shown in figures 1 to 6, wheel pair: wheel is connect between axle box by bearing, and interference is used between bearing and axle Cooperation.It takes turns to the total weight for undertaking vehicle, and high-speed cruising in orbit, while also subject in terms of car body, rail two Other various quiet, dynamic deformation from motion that transmitting comes, stress are very complicated.

(2) as shown in figures 1 to 6, axle: capableing of the lever of continuous rotation, and wheel shaft has identical turn in rotation hour wheel and axis Speed.(railway freight-car is usually solid shafting, and since the design is a kind of roller bearing adapter stabilizer bar of high speed, axis, which is reseted, is calculated as 16.5t, is adopted It is hollow shaft).

(3) as shown in figs. 9-10, axle box: use built-in axle, will wheel to and framework link together, make wheel to along steel The rolling of rail is converted into translation of the car body along route；The weight of vehicle is born, the active force in direction is transmitted；Guarantee good profit Slip energy.

(4) as shown in figs. 9-10, axle box swivel arm and one is two stage stiffness steel spring: using pivoted arm axle box, axle box and structure Frame side frame end is steel spring connection by pivoted arm and one, and steel spring rigidity is two-stage.Vertical impact is mitigated, axle box is constrained and is turned To the vertically and horizontally movement and transmitting cross force between frame.

(5) as Figure 7-8, H-shaped overall welding type framework, connection bogie each section and transmitting each side framework: are used Xiang Li.

(6) as shown in figures 1 to 6, brake disc, brake unit: mode of braking is braked using reel, is set on hole-bored axle from end to end It is equipped with the brake disc seat for installing brake disc, for brake disc on axis, brake unit hangs the braking list in framework needle beam On first seat, it to be used for train braking.

(7) as shown in figure 12, one is vertical damper: it is vertical damper that one is provided between axle box and frame end, Connection type is to be bolted.Reducing one is vertical vibration, vibrational energy of decaying.

(8) as shown in Figure 1, two be rubber metal pad spring: intermediate two be provided with for being connected with car body on framework cross bearer A two be rubber metal pad spring, and other end is directly connected with car body.Connection body and framework mitigate the excitation from wheel pair, Improve the stability of vehicle (especially car body).

(9) as shown in figure 12, resist snakelike damper: being provided on framework and resist snakelike damper for what is be connected with car body, Resist snakelike damper to be connected to framework side frame two sides, and resists snakelike damper longitudinally disposed along bogie.Improve the snakelike fortune of vehicle Dynamic stability and stationarity, while curve negotiation ability is not reduced again.

(10) as shown in figure 12, two be lateral damper: being provided with two systems for being connected with car body on framework and laterally subtracts Shake device, and two be that lateral damper is connected to framework needle beam end, and two be that lateral damper is laterally arranged along bogie.Reduce Two be oscillation crosswise, vibrational energy of decaying.

(11) as shown in Fig. 1,7, two be vertical backstop: it is vertical backstop that two are provided on framework side frame, and vertical backstop is set Setting two is on side frame by rubber metal pad.When vehicle passes through curve, limitation car body is sidewindered to greatest extent.

(12) as shown in figure 13, torsion bar mechanism for preventing side rolling of train carriage: torsion bar mechanism for preventing side rolling of train carriage is made of torsion bar, torsion bar arm and connecting rod. Torsion bar passes through hollow needle beam, is mounted on the anti-side rolling torsion rod seat in framework needle beam, and torsion bar both ends are located at framework side Frame two sides；Torsion bar both ends are connected with torsion bar arm, and torsion bar arm is longitudinally disposed along bogie；Torsion bar arm end, which is connected with, to be used for and vehicle The connected connecting rod of body, and connecting rod is along the vertical setting of bogie.Limitation car body sidewinders angle, makes the plunging motion of car body not by shadow It rings.

(13) as shown in figure 11, wheel is to cross-braced device: in such a way that two wheels are to pull rod arranged crosswise is stablized, Mounting base is arranged in axle box bottom, will be two two interconnected in such a way that the axle box being diagonally distributed is hinged by rubber metal pad.Wherein, one It is provided with lantern ring in the middle part of a pull rod, another pull rod intersects across lantern ring.Enhancing wheel is to the stabilization on straight line and curve Property.

(14) as shown in figure 14, the drawing pull bar for being connected with car body drawing pull bar: is provided on framework cross bearer.Even Connect framework and car body, longitudinal force of the transmitting from bogie to car body.

(15) as shown in Fig. 1,7, two system's transverse direction backstops: two system's transverse direction backstops are provided on framework side frame, two systems laterally stop Gear is arranged between vertical backstop and rubber metal pad spring.When vehicle passes through curve, the displacement of limitation cross-car is to greatest extent.

Firstly, the bogie primary reduces single stage suspension in such a way that axle box swivel arm positions and takes turns to cross support Longitudinal rigidity is positioned, curve passing through handling capacity is effectively increased.Meanwhile the bogie uses H-shaped overall welding type framework, axis Case positioning method uses the pivoted arm positioning method with high speed characteristics to have using resisting snakelike damper and two to be lateral damper Effect improves the stationarity and robust motion of vehicle snaking motion, so that the critical speed of vehicle operation is improved, to reach To the higher speed of service.For the bogie primary by the way of two stage stiffness steel spring and pivoted arm positioning, two systems use rubber Heap, while to be equipped with one be vertical damper, anti-hunting damper holder, two is lateral damper, vertical backstop and lateral backstop, if The meter speed of service is 200km/h, belongs to high-speed freight car bogie scope, is had when transporting some high value added products obvious excellent Gesture.

Secondly, the bogie adds torsion bar mechanism for preventing side rolling of train carriage.Toppling property is substantially not present in traditional axle box external lorry The problem of difference, after using the built-in bogie of axle box instead, due to the shortening of axle box span, axle box resists bogie frame and car body The ability of toppling is substantially reduced, it could even be possible to being more than requirement of country's GB5599-85 standard to toppling property of rail vehicle, existing goods Vehicle bogie does not use torsion bar mechanism for preventing side rolling of train carriage to improve the anti-overturning energy of vehicle.The bogie tradition lorry uses anti-side Torsion bar arrangement is rolled to improve vehicle resistance to capsizing, the torsion bar for playing anti-side rolling is arranged across framework needle beam, solves it Secondary suspension provide anti-side rolling scarce capacity the problem of, compensate for inside axle box suspension roller bearing adapter stabilizer bar topple sexuality difference ask Topic.It is vertical backstop that this programme, which is also devised with two, and drawing pull bar is taken turns to cross-braced device, to the curving performance of lorry It is obviously improved, especially anti-side rolling torsion rod and two is vertical stop device, compensates for the built-in bogie anti-side rolling energy of axle box The low insufficient feature of power.

Again, the bogie is on the basis of built-in axle, since Car design is positioned as high speed low-axis-load, so adopting Self weight is more reduced with hollow shaft axle, while greatly being shortened wheelbase and being used the simple drawing pull bar of structure.With lower Self weight, realize lightweight and low wheel-rail force.The built-in roller bearing adapter stabilizer bar of axle box and traditional outer axle box lorry turn It is compared to frame, greatly has compressed the arrangement space of all truck components, so that structure is become extremely compact, while shortening structure The length of frame cross bearer simultaneously uses small wheelbase, reduces wheel to, frame size, alleviates the overall weight of entire bogie, have Effect alleviates unsprung mass, and axle length can shorten nearly 500mm, which also uses hole-bored axle from end to end technology.Bogie Overall quality reduces 1/5-1/4 compared with axle box bogie outside tradition, and under the conditions of same axis is heavy, load-carrying turns than axle box outside tradition To the more 5-6t of frame, transportation cost is reduced, obtains better economy.With the mitigation of quality, active force is reduced between wheel track, Improve dynamics of vehicle performance, reduce the abrasion between wheel track, reduce running noises and environmental pollution, increase wheel pair and The service life of railway track, reduces maintenance cost.

Refer to finally, the bogie goes for lateral stability identical with traditional lorry using the built-in scheme of axle box Mark is mainly longitudinal rigidity by increasing one, but increasing one is that longitudinal rigidity will lead to curving performance variation, we Case, to cross-braced device, enhances lateral stability while effectively improving the curve negotiation ability of vehicle using wheel.By In using the built-in design of axle box, it is more advantageous to the placement of the wheel to cross-braced device of this programme, is efficiently reduced The longitudinal rigidity of single stage suspension is conducive to vehicle traveling comfort, has combined the curve negotiating of vehicle.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (7)

1. a kind of built-in bogie of high-speed railway lorry axle box, using H-shaped monoblock type framework and built-in axle, feature exists In: it is provided on framework and resists snakelike damper and two to be lateral damper for what is be connected with car body；Snakelike damper is resisted to connect In framework side frame two sides, and resist snakelike damper longitudinally disposed along bogie；Two be that lateral damper is connected to framework needle beam End, and two be that lateral damper is laterally arranged along bogie；Using reel mode of braking, brake disc is mounted on axle, system Moving cell is mounted on framework needle beam；It is rubber metal pad spring that two for being connected with car body are provided on framework cross bearer；It adopts With hole-bored axle from end to end, the brake disc seat for installing brake disc is provided on hole-bored axle from end to end.

2. the built-in bogie of high-speed railway lorry axle box according to claim 1, it is characterised in that: be additionally provided with wheel pair Cross-braced device, wheel in such a way that two wheels are to pull rod arranged crosswise is stablized, will be distributed cross-braced device in diagonal Axle box two it is two interconnected.

3. the built-in bogie of high-speed railway lorry axle box according to claim 1, it is characterised in that: use pivoted arm axis Case, axle box are that steel spring is connect by pivoted arm and one with framework side frame end portion, and steel spring rigidity is two-stage.

4. the built-in bogie of high-speed railway lorry axle box according to claim 3, it is characterised in that: axle box and framework end It is vertical damper that one is provided between portion.

5. the built-in bogie of high-speed railway lorry axle box according to claim 1, it is characterised in that: be additionally provided with anti-side Torsion bar arrangement is rolled, torsion bar mechanism for preventing side rolling of train carriage is made of torsion bar, torsion bar arm and connecting rod；Torsion bar passes through hollow needle beam, and torsion bar Both ends are located at framework side frame two sides；Torsion bar both ends are connected with torsion bar arm, and torsion bar arm is longitudinally disposed along bogie；Torsion bar arm end It is connected with the connecting rod for being connected with car body, and connecting rod is along the vertical setting of bogie.

6. the built-in bogie of high-speed railway lorry axle box according to claim 1, it is characterised in that: set on framework side frame Being equipped with two is vertical backstop.

7. the built-in bogie of high-speed railway lorry axle box according to claim 1, it is characterised in that: set on framework side frame It is equipped with two system's transverse direction backstops.