CN115675556A - Railway carriage bogie - Google Patents

Abstract

The invention discloses a railway carriage bogie, comprising: the suspension assembly comprises a swing bolster and a rack, and the swing bolster is arranged on the rack; the axle box assembly comprises a wheel pair, an axle box spring, a bearing seat, a guide pillar, a positioning sleeve, a bearing cover and an oil pressure shock absorber, wherein the positioning sleeve is arranged on the guide pillar; the journal box spring is provided with support rings arranged up and down and a plurality of elastic working rings arranged between the two support rings, and avoidance grooves are formed in the surfaces, opposite to the adjacent elastic working rings, of the support rings. The service life of the spring is prolonged by reducing the breakage of the spring, and the use reliability of the railway carriage bogie is further improved.

Description

Railway carriage bogie

Technical Field

The invention relates to the technical field of rail transit vehicles, in particular to a railway passenger car bogie.

Background

In the running process of the railway passenger car, a spring in a passenger car bogie is used as a key important part and can be used for distributing axle load, relieving the track impact on the car, reducing the power action of the car on a line and enabling the car to run comfortably and stably. However, a spring used in a current railway carriage bogie sometimes has a failure, and a fracture failure often occurs in an early stage of putting a new spring into operation, and a fracture part is entirely generated on a spring operating ring and is concentrated on a contact wear part of the spring operating ring and the support ring, so that the service life of the spring is reduced, and the reliability of the bogie is reduced. The invention aims to solve the technical problem of how to design a technology for prolonging the service life of a spring and improving the use reliability of a bogie.

Disclosure of Invention

The invention provides a railway carriage bogie, which can reduce the breakage of a spring to prolong the service life of the spring and further improve the use reliability of the railway carriage bogie.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a railway carriage bogie, comprising:

the suspension assembly comprises a swing bolster and a rack, and the swing bolster is arranged on the rack;

the axle box assembly comprises a wheel set, an axle box spring, a bearing seat, a guide pillar, a positioning sleeve, a bearing cover and an oil pressure shock absorber, wherein the positioning sleeve is arranged on the guide pillar, the axle box spring is arranged on the guide pillar and the positioning sleeve, the bearing seat is arranged on the positioning sleeve, the wheel set and the bearing cover are arranged on the bearing seat, the oil pressure shock absorber is arranged on the rack and the bearing cover, and the guide pillar is arranged on the rack;

the axle box spring is provided with support rings arranged up and down and a plurality of elastic working rings arranged between the two support rings, and the support rings are provided with avoidance grooves on the surfaces opposite to the adjacent elastic working rings.

Further, the avoidance groove is formed by extending the free end of the support ring along the extending direction of the support ring.

Furthermore, the lock ring is adjacent to the surface that elasticity work circle is relative is provided with and is annular plane, the plane distance is adjacent the minimum distance of elasticity work circle is the same, it is in to dodge the groove setting on the plane.

Further, when the journal box spring is at the maximum extrusion deformation amount, the elastic working ring adjacent to the support ring is positioned in the avoidance groove.

Furthermore, the suspension assembly further comprises a limit stop, a damping rubber block, a traction pull rod and a friction side bearing, wherein the friction side bearing is arranged on the rack, and the limit stop, the traction pull rod and the damping rubber block are arranged on the swing bolster;

the railway passenger car bogie further comprises a brake assembly, wherein the brake assembly comprises a rocker, a brake rod, a first connecting rod and a second connecting rod, the brake rod is arranged on the first connecting rod, the rocker is arranged on the brake rod, the second connecting rod is arranged on the rocker, and the first connecting rod is arranged on the rack.

Furthermore, the frame sets up to the H type, the middle part of frame sets up to the concave groove, the bolster setting is in the concave groove of frame.

Furthermore, the damping rubber blocks are arranged at two ends of the swing bolster, and the limit stop blocks are arranged at two ends close to the swing bolster; the friction side bearings are arranged at two ends of the middle part of the frame, and the swing bolster is supported by the friction side bearings.

Furthermore, the first end of the positioning sleeve is disposed at two ends of the bearing seat, the first end of the guide post is disposed in the second end of the positioning sleeve and does not reach the first end of the positioning sleeve, two ends of the journal box spring are disposed at the second end of the guide post and the first end of the positioning sleeve respectively, and the guide posts are disposed at four corners of the frame respectively.

Further, the bearing cover is arranged on the side face of the bearing seat, the first end of the oil pressure shock absorber is arranged on the rack, and the second end of the oil pressure shock absorber is arranged on the bearing cover.

Furthermore, the first end of the first connecting rod is rotatably arranged on the four corners of the middle of the rack, the two ends of the brake rod are respectively provided with a brake block, the brake block on the brake rod is arc-shaped, one end of the brake block on the brake rod is rotatably arranged at the second end of the first connecting rod, the brake rod is respectively arranged at the first side and the second side of the middle of the rack, the middle of the rocker is rotatably arranged at the middle of the brake rod, the first end and the second end of the second connecting rod are rotatably arranged at the first end of the rocker, and the second end of the rocker at the second side of the middle of the rack is rotatably arranged at the middle of the rack.

Compared with the prior art, the technical scheme of the invention has the following technical effects: the avoidance groove is formed in the supporting ring of the axle box spring, the avoidance groove can reserve a space, and the elastic working ring enters the space when the axle box spring is pressed, so that the abrasion of the elastic working ring generated in the initial operation stage is reduced, the contact area between the elastic working ring and the supporting ring is increased, the contact stress is reduced, the occurrence of fatigue cracks is avoided, the service life of the spring is prolonged, and the use reliability of the railway passenger car bogie is improved.

Drawings

FIG. 1 is one of the schematic structural views of a railway passenger car truck according to the present invention;

FIG. 2 is a second schematic structural view of a railway passenger car truck according to the present invention;

FIG. 3 is a third schematic view of the bogie for railway carriages of the present invention;

FIG. 4 is an enlarged view of a portion of area A of FIG. 2;

FIG. 5 is a schematic view of the structure of a spring of a middle shaft box of the railway carriage bogie;

FIG. 6 is an enlarged partial view of the area B in FIG. 5;

FIG. 7 is a schematic view of the construction of the frame in the railway carriage bogie of the present invention;

FIG. 8 is a schematic view of the assembly of the frame and brake assembly of the railway car truck of the present invention.

Reference numerals are as follows:

a suspension assembly 1;

the device comprises a swing bolster 11, a frame 12, a limit stop 13, a damping rubber block 14, a traction pull rod 15 and a friction side bearing 16;

an axle box assembly 2;

the wheel pair 21, the axle box spring 22, the bearing seat 23, the guide post 24, the positioning sleeve 25, the bearing cover 26 and the oil pressure damper 27;

brake assembly 3

A rocker 31, a brake lever 32, a first link 33, and a second link 34.

Detailed Description

As shown in fig. 1 to 8, the present invention provides a railway carriage bogie comprising: a suspension assembly 1 and an axlebox assembly 2.

The suspension assembly 1 comprises a swing bolster 11, a rack 12, a limit stop 13, a damping rubber block 14, a traction pull rod 15 and a friction side bearing 16, wherein the swing bolster 11 and the friction side bearing 16 are arranged on the rack 12, and the limit stop 13, the traction pull rod 15 and the damping rubber block 14 are arranged on the swing bolster 11;

the axle box assembly 2 comprises a wheel pair 21, an axle box spring 22, a bearing seat 23, a guide post 24, a positioning sleeve 25, a bearing cover 26 and an oil pressure damper 27, wherein the positioning sleeve 25 is arranged on the guide post 24, the axle box spring 22 is arranged on the guide post 24 and the positioning sleeve 25, the bearing seat 23 is arranged on the positioning sleeve 25, the wheel pair 21 and the bearing cover 26 are arranged on the bearing seat 23, the oil pressure damper 27 is arranged on the frame 12 and the bearing cover 26, and the guide post 24 is arranged on the frame 12;

the axle box spring has support rings 221 arranged up and down and a plurality of elastic working rings 222 arranged between two support rings 221, and an avoidance groove 2211 is arranged on the surface of each support ring 221 opposite to the adjacent elastic working ring 222.

Specifically, when the contact portion between the support ring 221 and the elastic operating ring 222 is started, it is apparently only in a narrow line contact, so that local wear occurs, and a stage in which the wear is severe occurs at an early stage of the operation of the pedestal spring. When the wear reaches a certain degree, the trace profile remains relatively stable. Therefore, it is found that the spring breakage often occurs in an early stage of the operation of newly manufacturing the journal spring. According to this characteristic, when the journal box spring is manufactured, wear indents may be preformed on the plane of the support ring 221 to form the escape grooves 2211, which reduces the wear of the elastic operating ring 222 of the journal box spring at the initial stage of operation, increases the contact area between the support ring and the elastic operating ring, reduces the contact stress, and avoids the occurrence of fatigue cracks. The structure of the axle box spring is easy to realize in the manufacturing process, before the axle box spring is rolled, the support ring 221 needs to be forged and flattened, and can be forged and formed by using a forging die at the moment, or a bar stock is pre-indented in an extrusion mode in a hot melting state to form the avoiding groove 2211 and then is rolled. In terms of mechanical performance, since the support ring 221 plays a supporting role and has smaller stress per se under working conditions, the avoidance groove 2211 is formed on the plane of the support ring 221 in a prefabricating manner, and the structural strength of the spring is not influenced.

Further, the escape groove 2211 is arranged by the free end portion of the support ring 221 extending in the extending direction of the support ring 221. Specifically, the escape groove 2211 is provided at the free end portion of the support ring 221 so as to escape the elastic operating ring 222 at the end portion position. In addition, the avoiding groove 2211 is designed to follow the extending direction of the support ring 221 so as to better satisfy the good contact with the adjacent elastic working ring 222 to reduce the friction and stress concentration.

Still further, the surface of the support ring 221 opposite to the adjacent elastic operating ring 222 is provided with an annular plane 2212, the minimum distance between the plane 2212 and the adjacent elastic operating ring 222 is the same, and the avoiding groove 2211 is arranged on the plane 2212.

Specifically, in order to enable the adjacent elastic working rings 222 to be uniformly stressed by the supporting ring 221, a following plane 2212 is arranged on the supporting ring 221, and the distance from the center line of the plane 2212 is the same as the minimum distance of the adjacent elastic working rings 222. Thus, after the compression of the axlebox spring, the adjacent resilient working ring 222 can be uniformly supported by the support ring 221.

When the axlebox spring is at the maximum compression deformation amount, the elastic working ring 222 adjacent to the support ring 221 is positioned in the escape groove 2211.

Compared with the prior art, the technical scheme of the invention has the following technical effects: dodge the groove through forming on axle box spring's supporting ring, dodge the groove and can reserve out the space to get into than adjacent elasticity work circle when supplying axle box spring pressurized, firstly reduced the wearing and tearing that elasticity work circle produced at operation initial stage, secondly increased elasticity work circle and supporting ring area of contact between them, reduce contact stress, avoid fatigue crack's emergence, realize reducing the spring life who breaks with the extension spring, and then improve passenger train bogie's reliability in utilization.

In certain embodiments, the railway car truck further comprises a brake assembly 3; the brake assembly 3 comprises a rocker 31, a brake lever 32, a first link 33 and a second link 34, wherein the brake lever 32 is arranged on the first link 33, the rocker 31 is arranged on the brake lever 32, and the second link 34 is arranged on the rocker 31; wherein the first link 33 is provided on the frame 12.

Specifically, the swing bolster 11 is arranged on the frame 12, the car body is arranged on the swing bolster 11, the swing bolster 11 and the frame 12 can rotate mutually, the passing capacity of a small curve of the device is improved, the friction side bearing 16 is arranged on the frame 12, when the swing bolster 11 and the frame 12 rotate, the rotation resistance required when the car runs is provided, meanwhile, the car body transmits the self mass to the friction side bearing 16 through the swing bolster 11 so as to facilitate the curve passing of the car, the limit stop 13 and the shock absorption rubber block 14 are arranged on the swing bolster 11, the car body is arranged on the swing bolster 11 through the limit stop 13 and the shock absorption rubber block 14, the limit stop 13 is stopped at two sides of the car body so as to facilitate the transverse limit of the car body, meanwhile, the shock absorption rubber block 14 supports the car body so as to improve the stability and comfort of the car, the traction pull rod 15 is arranged on the swing bolster 11 to connect the swing bolster 11 and the car body so as to facilitate the transmission of the traction force and the braking force when the car runs, the shock absorption rubber block 14 is arranged on the swing bolster 11, the car body extrudes the shock absorption rubber block 14 so as to make the car body and the car body more stable and the car body,

the guide post 24 is arranged on the frame 12, the positioning sleeve 25 is arranged on the guide post 24, the journal box spring 22 is arranged on the guide post 24 and the positioning sleeve 25, the journal box spring 22 is firstly inserted into the positioning sleeve 25, then the guide post 24 penetrates through the journal box spring 22 and is inserted into the positioning sleeve 25, the pedestal 12 is supported by the journal box spring 22 conveniently, the bearing seat 23 is arranged on the positioning sleeve 25, the wheel pair 21 is arranged on the bearing seat 23, when the vehicle runs, the wheel pair 21 supports the frame 12, the vehicle is convenient to stabilize and run, the bearing cover 26 is arranged on the bearing seat 23, the oil pressure damper 27 is arranged on the frame 12 and the bearing cover 26, the oil pressure damper 27 supports the frame 12, the frame is convenient to stabilize,

the first link 33 is arranged on the frame 12, the brake lever 32 is arranged on the first link 33, the rocker 31 is arranged on the brake lever 32, the second link 34 is arranged on the rocker 31, when the rocker 31 is rocked, the brake lever 32 is rotated through the first link 33 or the second link 34, so that the brake lever 32 can be pressed against the wheel set 21 to brake the vehicle, and the vehicle is braked.

Further, the frame 12 is configured as an H-shape, the middle portion of the frame 12 is configured as a concave groove and the bolster is disposed in the concave groove of the frame 12.

Specifically, frame 12 sets up to the H type and for welded structure, wheel pair 21 sets up the both ends at frame 12, be favorable to the setting of wheel pair 21, be favorable to wheel pair 21 to supporting frame 12 simultaneously, the middle part of frame 12 sets up to the concave groove, bolster 11 sets up in the concave groove of frame 12, the interval between the last plane of bolster 11 and the last plane at frame 12 both ends is less, the frame sets up on bolster 11, bolster 11 is supporting the automobile body, the interval between automobile body and the frame 12 reduces, be favorable to the stability of automobile body.

Further, a through hole is formed in the middle of the frame 12, and the swing bolster 11 is arranged in the through hole of the frame 12 through a center pin.

Specifically, the swing bolster 11 is arranged in a through hole of the frame 12 through a center pin, the car body is arranged on the swing bolster 11, traction force is provided for the whole car, meanwhile, the swing bolster 11 and the frame 12 can rotate mutually, therefore, the frame 12 and the car body can also rotate mutually, and when the car runs, the curve running of the car is facilitated.

Further, the cushion rubber blocks 14 are arranged at two ends of the swing bolster 11, and the limit stoppers 13 are arranged at two ends close to the swing bolster 11.

Specifically, set up the automobile body on the bolster 11, the automobile body is being supported to shock attenuation rubber block 14, and the automobile body extrusion is the shock attenuation rubber block 14 of the vehicle of being convenient for in the driving to improve the travelling comfort of vehicle, simultaneously, after the automobile body was put on the bolster 11, limit stop 13 provided the horizontal spacing of automobile body, the stability of the vehicle of being convenient for.

Further, friction side bearings 16 are provided at both ends of the middle portion of the frame 12, and the friction side bearings 16 support the bolster 11.

Specifically, friction side bearing 16 sets up the both ends in frame 12 middle part, and friction side bearing 16 is located the concave groove of frame 12 just, and back when bolster 11 sets up on frame 12, friction side bearing 16 is supporting bolster 11, increases the frictional force of bolster 11 and frame 12 support, when the vehicle curve goes, reduces the vibration of shaking the head of vehicle, improves the stability of vehicle to the vehicle curve of being convenient for passes through.

Further, first ends of the traction links 15 are respectively disposed at both ends of the bolster 11 and second ends of the traction links 15 are respectively directed to the first and second ends of the frame 12.

Specifically, the first ends of the traction pull rods 15 are respectively arranged at two ends of the swing bolster 11, the second ends of the traction pull rods 15 respectively point to the first end and the second end of the frame 12, and the traction pull rods 15 at two ends of the frame 12 are respectively connected with the front vehicle body and the rear vehicle body of the frame 12, so that mutual traction between the vehicle bodies is facilitated, and curve running of the vehicle is facilitated.

Further, a first end of the guide post 24 is disposed at two ends of the bearing seat 23, a first end of the guide post 24 is disposed in a second end of the guide post 25 and the first end of the guide post 24 does not reach the first end of the guide post 25, two ends of the journal spring 22 are disposed at the second end of the guide post 24 and the first end of the guide post 25, and the guide posts 24 are disposed at four corners of the frame 12.

Specifically, the first end of the positioning sleeve 25 is arranged at two ends of the bearing seat 23, the first end of the guide post 24 is arranged in the second end of the positioning sleeve 25, the guide posts 24 are respectively arranged at four corners of the frame 12, the frame 12 is supported by the bearing seat 23 and the guide posts 24, the bolster 11 is supported by the frame 12, the car body is supported by the bolster 11, comfort and stability of the car are enhanced, the first end of the guide post 24 does not reach the first end of the positioning sleeve 25, two ends of the axle box spring 22 are respectively arranged at the second end of the guide post 24 and the first end of the positioning sleeve 25, the axle box spring 22 is supported between the guide post 24 and the positioning sleeve 25, when the car shakes, the guide post 24 and the positioning sleeve 25 can move relative to each other, the axle box spring 22 absorbs vibration generated by shaking of the car, and stability of the car is improved.

Further, a bearing cover 26 is provided on the side of the bearing housing 23, a first end of the oil damper 27 is provided on the frame 12, and a second end of the oil damper 27 is provided on the bearing cover 26.

The bearing cover 26 is arranged on the side of the bearing seat 23, the wheel pair 21 is arranged in the bearing seat 23, sealing between the wheel pair 21 and the bearing seat 23 is facilitated, rotation of the wheel pair 21 is facilitated, the first end of the oil pressure damper 27 is arranged on the frame 12, the second end of the oil pressure damper 27 is arranged on the bearing cover 26, when a vehicle vibrates in walking, the oil pressure damper 27 supports the frame 12, meanwhile, the oil pressure damper 27 absorbs vibration generated by the vehicle, and therefore stability and comfort of the vehicle are improved.

Further, the first ends of the first links 33 are rotatably disposed at four corners of the middle portion of the frame 12, the two ends of the brake lever 32 are respectively disposed with brake blocks, the brake blocks on the brake lever 32 are arranged in a circular arc shape, one end of the brake block on the brake lever 32 is rotatably disposed at the second end of the first link 33 and the brake lever 32 is respectively disposed at the first side and the second side of the middle portion of the frame 12, the middle portion of the rocker 31 is rotatably disposed at the middle portion of the brake lever 32, the first end and the second end of the second link 34 are rotatably disposed at the first end of the rocker 31, and the second end of the rocker 31 at the second side of the middle portion of the frame 12 is rotatably disposed at the middle portion of the frame 12.

Specifically, the brake pads on the brake lever 32 are arranged in a circular arc shape, the brake pads on the brake lever 32 can better fit with the treads of the wheel sets, so as to facilitate braking of the wheel sets 21, the first ends of the first connecting rods 33 are respectively and rotatably arranged on the four corners of the middle part of the frame 12, the two ends of the brake lever 32 are respectively provided with brake pads, when braking is needed, the brake pads on the brake lever 32 can press the treads of the wheel sets 21, huge friction force is generated between the treads of the wheel sets 21 and the brake pads on the brake lever 32, so as to achieve braking of the vehicle, one ends of the brake pads on the brake lever 32 are respectively and rotatably arranged on the second ends of the first connecting rods 33, the brake levers 32 are respectively and rotatably arranged on the first side and the second side of the middle part of the frame 12, the middle parts of the rocker levers 31 are respectively and rotatably arranged on the middle part of the brake lever 32, the first ends and the second ends of the rocker 31 are respectively and rotatably arranged on the first end of the rocker 31, the second side of the middle part of the frame 12, when the rocker 31 on the first side of the middle part of the frame 12 is pulled, the brake pads on the first connecting rods 33 and the brake lever can respectively press the brake pads on the frame 12, so as to achieve braking of the different wheels of the vehicle.

When the vehicle runs to generate vibration, the damping rubber block 14, the journal spring 22 and the oil pressure damper 27 absorb the vibration generated by the vehicle, so that the comfort and the stability of the vehicle are improved, when the vehicle runs in a curve, the swing bolster 11 and the frame 12 rotate mutually, and the traction pull rod 15 pulls the vehicle body in front of and behind the frame 12, so that the curve running of the vehicle is facilitated.

Through setting up the bolster in the frame, be convenient for pull and turn to of vehicle, thereby be convenient for the vehicle to pass through the small curve circuit, through setting up the friction bearing in the frame, be convenient for the support of bolster, be convenient for provide frictional force when the vehicle curve goes simultaneously, through the limit stop who sets up on the bolster, be convenient for the horizontal spacing of automobile body, through the first spring that sets up on the bolster, be convenient for the support of automobile body, thereby improve the travelling comfort and the stability of vehicle, through setting up the traction pull rod on the bolster, be convenient for pull of vehicle, through the wheel pair that sets up on the bearing frame, be convenient for the walking of vehicle, through second spring and oil pressure shock absorber, be convenient for support and the shock attenuation of vehicle, thereby improve the travelling comfort and the stability of vehicle, through position sleeve and guide pillar, be convenient for the setting of second spring, through the second connecting rod that sets up on the rocker and the first connecting rod that sets up on the frame, be convenient for the rotation of brake lever, thereby be convenient for the rotation of vehicle, through the rocker that sets up on the brake lever, be convenient for rotate the brake lever carries out the braking of vehicle, thereby be convenient for carry out the braking of vehicle.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A railway car truck, comprising:

the suspension assembly comprises a swing bolster and a rack, and the swing bolster is arranged on the rack;

the axle box assembly comprises a wheel pair, an axle box spring, a bearing seat, a guide pillar, a positioning sleeve, a bearing cover and an oil pressure shock absorber, wherein the positioning sleeve is arranged on the guide pillar, the axle box spring is arranged on the guide pillar and the positioning sleeve, the bearing seat is arranged on the positioning sleeve, the wheel pair and the bearing cover are arranged on the bearing seat, the oil pressure shock absorber is arranged on the rack and the bearing cover, and the guide pillar is arranged on the rack;

the axle box spring is provided with support rings arranged up and down and a plurality of elastic working rings arranged between the two support rings, and the support rings are provided with avoidance grooves on the surfaces opposite to the adjacent elastic working rings.

2. Railway carriage bogie according to claim 1, characterised in that the avoidance groove is arranged extending from the free end of the support ring in the extension direction of the support ring.

3. The railway passenger car bogie according to claim 2, wherein the surface of the support ring opposite to the adjacent elastic working ring is provided with a plane in a ring shape, the plane is the same distance from the minimum distance of the adjacent elastic working ring, and the avoidance groove is provided on the plane.

4. The railway car truck of claim 1, wherein the resilient running ring adjacent the support ring is positioned in the evasive slot when the axlebox spring is at a maximum crush deflection.

5. The railway car truck of any one of claims 1 to 4, wherein the suspension assembly further comprises a bump stop, a cushion rubber, a traction link, and a friction side bearing, the friction side bearing being disposed on the frame, the bump stop, the traction link, and the cushion rubber being disposed on the bolster;

the railway passenger car bogie further comprises a brake assembly, wherein the brake assembly comprises a rocker, a brake rod, a first connecting rod and a second connecting rod, the brake rod is arranged on the first connecting rod, the rocker is arranged on the brake rod, the second connecting rod is arranged on the rocker, and the first connecting rod is arranged on the rack.

6. A railway passenger car bogie as claimed in claim 5, wherein the frame is arranged in an H-shape, the frame is arranged with a concave slot in the middle, and the bolster is arranged in the concave slot of the frame.

7. The railway passenger car bogie of claim 5, wherein the shock absorbing rubber blocks are arranged at two ends of the swing bolster, and the limit stops are arranged at two ends close to the swing bolster; the friction side bearings are arranged at two ends of the middle part of the rack, and the swing bolster is supported by the friction side bearings.

8. The railway car truck of claim 5, wherein the first end of the guide bushing is disposed at both ends of the bearing seat, the first end of the guide post is disposed in the second end of the guide bushing and does not reach the first end of the guide bushing, the two ends of the journal spring are disposed at the second end of the guide post and the first end of the guide bushing, respectively, and the guide posts are disposed at four corners of the frame, respectively.

9. The railway car truck of claim 5, wherein the bearing cap is disposed laterally of the bearing seat, a first end of the oleo is disposed on the frame, and a second end of the oleo is disposed on the bearing cap.

10. The railway passenger car truck according to claim 5, wherein the first ends of the first links are rotatably disposed at four corners of the middle portion of the frame, the brake levers are provided at both ends thereof with brake blocks, the brake blocks of the brake levers are arranged in a circular arc shape, the brake blocks of the brake levers are provided at one ends thereof with brake blocks rotatably disposed at the second ends thereof and the brake levers are provided at the first and second sides of the middle portion of the frame, the middle portions of the rockers are rotatably disposed at the middle portions thereof, the first and second ends of the second links are rotatably disposed at the first ends thereof, and the second ends of the rockers at the second side of the middle portion of the frame are rotatably disposed at the middle portion of the frame.

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