CN114906183A - Welding framework type bogie and rail train - Google Patents

Abstract

The invention provides a welding frame type bogie and a rail train, which comprises two groups of wheel pairs arranged in parallel at intervals, two side beams arranged in parallel at intervals and a cross beam positioned between the side beams, wherein two ends of the cross beam are respectively connected with the middles of the two side beams; the two ends of the wheel sets are respectively rotatably positioned on the bottom surfaces of the two side beams, and the cross beam is positioned between the two groups of wheel sets; the side beams are of single-web box-type structures and comprise first cover plates and first base plates which are arranged at intervals, first webs are located between the first cover plates and the first base plates, and the first webs are connected with the first cover plates and the first base plates. The side beam is formed by welding the first cover plate, the first bottom plate and the first web plate, and is reliable in structure, simple in process, lighter in overall weight and lower in welding difficulty, so that the manufacturing and maintenance cost of the side beam is reduced. Therefore, the welding frame type bogie provided by the invention solves the technical problems that the side beam is complex in structure and large in mass, and the manufacturing and maintenance costs are high.

Description

Welding framework type bogie and rail train

Technical Field

The embodiment of the invention relates to the technical field of rail trains, in particular to a welding frame type bogie and a rail train.

Background

A bogie is one of the most important parts in a railway train structure, and is a running gear capable of rotating relative to a vehicle body. The novel rail vehicle can increase the load of the vehicle, improve the speed, guarantee the safety, reduce the vibration and improve the braking, and has an important effect on the operation of a rail train. The rail train bogie main structure form includes: the welding frame type bogie has the characteristics of simple structure, light weight, convenience in maintenance and the like compared with the three-piece bogie, so that more and more rail trains such as subway construction and maintenance engineering vehicles adopt the welding frame type bogie.

Currently, welded frame bogies comprise a frame, which is the skeleton of the bogie and is formed by cross beams and side beams, for connecting the bogie components and transmitting forces in all directions, and for maintaining the position of the axle in the bogie.

However, the side members tend to be complex in structure and heavy in mass, resulting in high manufacturing and maintenance costs.

Disclosure of Invention

In view of this, the embodiment of the present invention provides a welded frame bogie and a rail train, so as to solve the technical problem that the side beam is often complex in structure and large in mass, which results in high manufacturing and maintenance costs.

The embodiment of the invention provides a welding framework type bogie, which comprises: the wheel pair assembly comprises two groups of wheel pairs arranged in parallel at intervals, two side beams arranged in parallel at intervals and a cross beam positioned between the side beams, wherein two ends of the cross beam are respectively connected with the middles of the two side beams;

the two ends of the wheel sets are respectively rotatably positioned on the bottom surfaces of the two side beams, and the cross beam is positioned between the two groups of wheel sets;

the side beams are of single-web box-type structures and comprise first cover plates and first base plates which are arranged at intervals, first webs are located between the first cover plates and the first base plates, and the first webs are connected with the first cover plates and the first base plates.

So set up, because only a web for curb girder structure is simple relatively, alleviates the whole weight of curb girder, reduces the welding degree of difficulty, thereby reduces its manufacturing and cost of maintenance.

In some embodiments, which may include the above-described embodiments, the wheel set includes an axle, two bearings and two wheels, the two bearings and the two wheels are respectively located at both ends of the axle, and the bearings are located at outer sides of the wheels, and the bearings are located opposite to bottom surfaces of both ends of the side members.

In some embodiments, which may include the above embodiments, the device further includes a primary suspension device, the primary suspension device is located between the side beam and the bearing, a sleeve is provided between two ends of the side beam, and the sleeve is sleeved outside the primary suspension device.

In some embodiments, which may include the above embodiments, the primary suspension further includes a steel spring and a rubber stack spring, the rubber stack spring being disposed through the steel spring.

In some embodiments that may include the above-mentioned embodiments, the rubber stack spring includes base and awl post, and the base has the passageway that runs through the bottom surface from the top surface, and partial awl post wears to locate partial passageway from the top of base in, and the area that the inner wall of passageway encloses is established towards the direction that deviates from the bearing and is progressively increased, and the area that the outer wall of awl post encloses is established towards the direction of keeping away from the bearing and is progressively increased, and base and awl post link together through the rubber vulcanization.

In some embodiments, which may include the above embodiments, the suspension device further includes a bearing adapter, the bearing adapter is located between the primary suspension device and the bearing, a platform is disposed on a side of the bearing adapter away from the bearing, a protrusion is disposed on a side of the platform away from the bearing, the protrusion extends into a bottom end of the channel, and a bottom surface of the base abuts against a top surface of the platform.

In some embodiments which may include the above embodiments, the taper pin further includes an upper cover, the upper cover is located at the top end of the sleeve, a first protruding block is disposed on a surface of the upper cover facing the bearing, a second protruding block is disposed on a surface of the first protruding block facing the bearing, the first protruding block extends into the steel spring, and the second protruding block extends into the groove at the top end of the taper pin.

In some embodiments, which may include the above embodiments, the rubber on both lateral sides and the bottom side of the awl cylinder has holes.

In some embodiments, which may include the above embodiments, the vehicle body further includes a lower center plate, the lower center plate is used for being rotatably connected with the vehicle body, and the lower center plate is a plane center plate or a spherical center plate.

In addition, the embodiment of the invention also provides a rail train, which at least comprises a braking device and the welding framework type bogie in the embodiment.

The welding frame type bogie and the rail train provided by the embodiment of the invention comprise two groups of wheel sets which are arranged in parallel at intervals, two side beams which are arranged in parallel at intervals and a cross beam positioned between the side beams, wherein two ends of the cross beam are respectively connected with the middles of the two side beams; the two side beams are integrally welded to the cross beam to form an H-shaped frame for linking (mounting) the truck components and transmitting forces in various directions, and for maintaining the position of other components within the truck. The two ends of the wheel sets are respectively rotatably positioned on the bottom surfaces of the two side beams, the cross beam is positioned between the two groups of wheel sets, and the wheel sets rotate relative to the track through the traction device so as to enable the bogie to move along with the traction device. The side beams are of single-web box-type structures and comprise first cover plates and first base plates which are arranged at intervals, first webs are located between the first cover plates and the first base plates, and the first webs are connected with the first cover plates and the first base plates. The side beam is formed by welding the first cover plate, the first bottom plate and the first web plate, and is reliable in structure, simple in process, lighter in overall weight and lower in welding difficulty, so that the manufacturing and maintenance cost of the side beam is reduced. Therefore, the welding framework type bogie provided by the embodiment solves the technical problems that the side beam is complex in structure and large in mass, and the manufacturing and maintenance cost is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is easy to see that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a top view of a welded frame bogie according to an embodiment of the present invention;

FIG. 2 is another top view of a welded frame bogie according to an embodiment of the present invention;

FIG. 3 is a front view of a welded frame bogie provided by an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of a welded frame bogie center core plate according to an embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of a welded frame bogie center plate that is a spherical center plate according to an embodiment of the present invention;

FIG. 6 is a side view of a welded frame bogie according to an embodiment of the present invention;

FIG. 7 is another side view of a welded frame bogie provided by an embodiment of the present invention;

FIG. 8 is a top view of a frame of a welded frame bogie according to an embodiment of the present invention;

FIG. 9 is a side view of a side sill of a welded frame bogie according to an embodiment of the present invention;

FIG. 10 is a side view of a portion of a side rail of a welded frame bogie provided in accordance with an embodiment of the present invention;

FIG. 11 is a top view of a portion of a side sill of a welded frame bogie according to an embodiment of the present invention;

FIG. 12 is a side view of a portion of a cross beam in a welded frame bogie provided in accordance with an embodiment of the present invention;

FIG. 13 is a top view of a portion of a cross beam in a welded frame bogie according to an embodiment of the present invention;

FIG. 14 is a block diagram of a primary suspension system in a welded frame bogie according to an embodiment of the present invention;

FIG. 15 is a top view of a rubber stack spring in a welded frame bogie according to an embodiment of the present invention;

fig. 16 is a cross-sectional view of a rubber-filled spring in a welded frame bogie according to an embodiment of the present invention.

Description of reference numerals:

10: a wheel set;

20: a side beam;

30: a cross beam;

40: a primary suspension device;

50: a bearing saddle;

60: an upper cover;

101: an axle;

102: a bearing;

103: a wheel;

201: a first cover plate;

202: a first base plate;

203: a first web;

204: a sleeve;

205: a reinforcement ring;

206: a first reinforcing rib plate;

207: a second reinforcing rib plate;

208: a guide frame;

209: a chute;

301: a second cover plate;

302: a second base plate;

303: a second web;

304: a third reinforcing rib plate;

305: opening a hole;

306: a lower side bearing;

307: a partition plate;

401: a steel spring;

402: a base;

403: a conical column;

404: a channel;

405: rubber;

406: a groove;

407: a through hole;

408: a hole;

501: a platform;

502: a protrusion;

701: a lower center plate;

702: a center pin;

703: a limiting ring;

704: a wear plate;

705: a stop ring;

801: a first brake beam;

802: a second brake beam;

803: a traveling lever;

804: a middle pull rod;

805: a brake shoe;

901: a bottom limit;

902: the side surface is limited.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The bogie is positioned between the vehicle body and the track. For the engineering vehicle for maintaining the subway line, the bogie has simple structure, convenient maintenance, reliability and durability, and is an ideal configuration of the subway engineering vehicle. Compared with the traditional three-piece bogie, the welding frame type bogie has the characteristics of simple structure, light weight, convenience in maintenance and the like, so that more and more metro construction and maintenance engineering vehicles adopt the welding frame type bogie.

In the related art, a welded frame type bogie includes a frame, which is a framework of the bogie, formed of cross members and side members for connecting the components of the bogie and transmitting forces in various directions, and for maintaining the position of an axle within the bogie.

However, the side beam generally adopts a double-web box-type structure, and the double-web box-type structure has two webs, so that the side beam is relatively complex in structure and relatively high in mass, welding difficulty is increased, and manufacturing and maintenance cost of the side beam is relatively high.

This embodiment provides a welding framework formula bogie, changes the curb girder of double-web box structure into the curb girder of single-web box structure, because only a web for curb girder structure is simple relatively, alleviates the whole weight of curb girder, reduces the welding degree of difficulty, thereby reduces its manufacturing and cost of maintenance.

As shown in fig. 1 to 5, the present embodiment provides a welded frame bogie, which includes two side beams 20 arranged in parallel and spaced apart, and a cross beam 30 located between the side beams 20, wherein two ends of the cross beam 30 are respectively connected to the middle of the two side beams 20. The side members 20 and the cross member 30 are integrally welded to form an H-shaped frame for linking (mounting) the components of the bogie and transmitting forces in various directions, and for maintaining the position of other components within the bogie.

In this embodiment, the vehicle body further includes two sets of wheel pairs 10 arranged in parallel at intervals, wherein two ends of each set of wheel pair 10 are respectively rotatably located on the bottom surfaces of the two side beams 20, and the cross beam 30 is located between the two sets of wheel pairs 10. The wheel set 10 is a contact part of a bogie and a track, a traction device of the track train generates traction on the bogie, and the wheel set 10 of the bogie rotates relative to the track so as to enable the bogie to move along the direction of the traction force.

In this embodiment, with continued reference to fig. 6, the side sill 20 is a single-web box-type structure, and the side sill 20 includes a first cover plate 201 and a first base plate 202 arranged at an interval, and a first web 203 located between the first cover plate 201 and the first base plate 202, and the first web 203 is connected to the middle of the first cover plate 201 and the first base plate 202. The side beam 20 is formed by welding the first cover plate 201, the first bottom plate 202 and the first web plate 203, and has a reliable structure and a simple process. Compared with the side beam 20 which partially adopts a double-web box type structure, the side beam 20 of the single-web box type structure only has one web, so that the side beam 20 has a relatively simple structure, the whole weight of the side beam 20 is light, the welding difficulty can be reduced, and the manufacturing and maintenance cost of the side beam 20 is reduced.

The welded frame bogie provided by the embodiment comprises two sets of wheel pairs 10 arranged in parallel at intervals, two side beams 20 arranged in parallel at intervals and a cross beam 30 positioned between the side beams 20, wherein two ends of the cross beam 30 are respectively connected with the middles of the two side beams 20; the two side beams 20 are integrally welded to the cross beam 30 to form an H-shaped frame for linking (mounting) the truck components and transmitting forces in various directions, and for maintaining the position of other components within the truck. The two ends of the wheel sets 10 are respectively rotatably arranged on the bottom surfaces of the two side beams 20, the cross beam 30 is arranged between the two wheel sets 10, and the wheel sets 10 rotate relative to the track through the traction device so as to enable the bogie to move along with the traction device. The side beam 20 is a single-web box-type structure, the side beam 20 comprises a first cover plate 201 and a first bottom plate 202 which are arranged at intervals, and a first web 203 positioned between the first cover plate 201 and the first bottom plate 202, and the first web 203 is connected with the middle of the first cover plate 201 and the first bottom plate 202. The side beam 20 is formed by welding the first cover plate 201, the first base plate 202 and the first web 203, and has the advantages of reliable structure, simple process, light overall weight of the side beam 20 and low welding difficulty, so that the manufacturing and maintenance cost of the side beam is reduced. Therefore, the welding frame type bogie provided by the embodiment solves the technical problems that the side beam 20 is complex in structure and large in mass, and the manufacturing and maintenance cost is high.

Further, with continued reference to fig. 7-11, the first cover plate 201 and the first base plate 202 are disposed in parallel spaced relation and the intermediate portions of the first cover plate 201 and the first base plate 202 are parallel to the horizontal plane. Compared with the side beam 20 which is provided in a U-shaped structure, i.e. the middle parts of the first cover plate 201 and the first base plate 202 protrude towards the direction of the rail, the protruding parts make the distance between the bottom of the side beam 20 and the bottom limit 901 of the rail smaller, reducing the adaptability of the bogie to different bottom limits 901. When the middle portions of the first cover plate 201 and the first base plate 202 are arranged parallel to the horizontal plane, the distance between the bottom of the side beam 20 and the bottom limit 901 of the rail is large, and the adaptability of the bogie to different bottom limits 901 is improved.

In this embodiment, a plurality of first stiffening rib plates 206 are disposed between the first cover plate 201 and the first base plate 202, the first stiffening rib plates 206 are respectively located on two sides of the first web 203, and the first stiffening rib plates 206 are connected to the first cover plate 201, the first base plate 202 and the first web 203 by welding. The first gusset 206 ensures the bending resistance of the side member 20 to improve the structural strength of the side member 20.

In this embodiment, two stiffening rings 205 are disposed in the middle of the first web 203 at intervals, the stiffening rings 205 are all disposed in the first web 203, wherein second stiffening rib plates 207 are respectively disposed between the stiffening rings 205 and the first cover plate 201 and between the stiffening rings 205 and the first base plate 202, and the second stiffening rib plates 207 are connected to the stiffening rings 205, the first web 203 and the first base plate 202, or the first cover plate 201 by welding. That is, second stiffener 207 at the bottom end of stiffener ring 205 is connected to stiffener ring 205, first web 203, and first base plate 202, and second stiffener 207 at the top end of stiffener ring 205 is connected to stiffener ring 205, first web 203, and first cover plate 201. The bending resistance of the side member 20 is further ensured to improve the structural strength of the side member 20.

In this embodiment, with continued reference to fig. 12 and 13, the cross beam 30 is a double-web box-type structure, and includes a second cover plate 301 and a second bottom plate 302 which are arranged at intervals, and two second webs 303 which are arranged at intervals between the second cover plate 301 and the second bottom plate 302, and the second webs 303 are connected between the second cover plate 301 and the second bottom plate 302. The second cover plate 301, the second base plate 302 and the second web 303 can be connected together by welding, so that the structure is reliable, and the process is simple.

In this embodiment, the two ends of the cross beam 30 are both provided with third stiffening rib plates 304 parallel to the second web 303, the third stiffening rib plates 304 are located between the second cover plate 301 and the second base plate 302, and the third stiffening rib plates 304 are connected with the second cover plate 301 and the second base plate 302. The third reinforcing web 304 ensures the bending resistance of the cross member 30 to improve the structural strength of the cross member 30.

Further, one end face of the third reinforcing rib plate 304 close to the side member 20 and one end face of the cross member 30 close to the side member 20 are connected to the middle of the first web 203 of the side member 20 by welding. That is, the axial end faces of the second cover plate 301, the second base plate 302 and the two second webs 303 are connected with the middle of the first web 203; further, an end surface of the third gusset 304 near one end of the side member 20 is also connected to the middle of the first web 203. The third reinforcing rib plate 304 increases the connecting area of the cross beam 30 and the side beam 20, and enhances the overall strength of the framework.

Furthermore, the two ends of the second bottom plate 302 have notches, and the first bottom plate 202 protrudes toward the notches of the second bottom plate 302, so that the end surface of the portion of the first bottom plate 202 protruding toward the notches abuts against the end surface of the second bottom plate 302 notch facing the first bottom plate 202. At this time, the bottom surface of the second web 303 corresponding to the notch and the top surface of the protruding portion of the first base plate 202 may be connected together by welding, so as to increase the connection area between the second web 303 and the first base plate 202 and enhance the overall strength of the frame.

Furthermore, arc transition structures are arranged on two sides of the protruding part of the first base plate 202, the arc transition structures increase the connection area of the first base plate 202 and the protruding part, and the overall strength of the framework is enhanced. The arc transition structure may be connected to the first base plate 202 by welding, or the arc transition structure may be integrally formed with the first base plate 202.

In this embodiment, a plurality of partition plates 307 may be further disposed in the middle of the inner wall of the cross beam 30, the partition plates 307 are perpendicular to the second web 303, and the partition plates 307 are connected to the second cover plate 301, the second bottom plate 302 and the two second webs 303. The bulkheads 307 ensure the bending resistance of the cross member 30 to improve the structural strength of the cross member 30.

Furthermore, an opening is formed in the middle of the partition 307, and the opening can reduce the weight of the partition 307, so that the weight is reduced.

In this embodiment, each wheel pair 10 includes an axle 101, two bearings 102 and two wheels 103, the two bearings 102 and the two wheels 103 are respectively located at two ends of the axle 101, the bearings 102 are located at outer sides of the wheels 103, and the bearings 102 are disposed opposite to bottom surfaces of two ends of the side beams 20. The bearing 102 rotatably locates the wheelset 10 on the bottom surface of the side member 20, the axle 101 rotates in the same direction as the inner race of the bearing 102, and the axle 101 does not wear parts in contact with the outer race of the bearing 102.

For example, the wheel pair 10 may be a truck RD2 type wheel pair with 1353 + -2 mm inboard of the wheels 103 and 1700mm wheelbase. The bearing 102 may be a double-row tapered roller bearing, and the bearing 102 can bear both radial force and large axial force. The wheel pair 10 can adopt standard components, the interchangeability of the components is high, and the manufacturing cost and the later maintenance cost can be reduced.

In this embodiment, a shock absorbing system, i.e., a primary suspension 40, is provided between the frame and the bearing 102 in order to dampen rail impact and vibration to the rail train and improve component reliability and crew comfort. The load above the frame is evenly distributed to the wheelset 10 by a series of suspension devices 40 to provide uniform axle weights. Wherein, a series of suspension device 40 is located between curb girder 20 and bearing 102, and the load that the framework above passes through curb girder 20 in proper order, a series of suspension device 40, bearing 102, evenly distributes on wheel pair 10 at last.

In this embodiment, with continued reference to fig. 14-16, the sleeve 204 is disposed between the two ends of the side beam 20, the sleeve 204 is disposed on the outer side of the primary suspension device 40, and the sleeve 204 can stably fix the primary suspension device 40 between the side beam 20 and the bearing 102, so as to prevent the primary suspension device 40 from moving horizontally. At the same time, the increase in the distance between the side sill 20 and the bearing 102 due to the addition of the primary suspension device 40 can be avoided, resulting in a lower center of gravity of the bogie.

Compared with the axle box partially arranged on the outer wall of the bearing 102 to accommodate the primary suspension device 40, the axle box has a large volume, the axle box occupies a large volume on the bottom and two sides of the bogie, and the axle box is closer to the bottom limit 901 and the side limit 902, so that the adaptability of the bogie to different bottom limits 901 and side limits 902 is reduced. The sleeve 204 is located in the middle of the side beam 20, the sleeve 204 is small in size and located above the bearing 102, and the distance between the sleeve 204 and the bottom limit 901 and the side limit 902 is long, so that the bogie can meet the requirement of different limits for urban rail transit and is suitable for the limits of state railways and most subway limits.

In this embodiment, the primary suspension device 40 further includes a steel spring 401 and a rubber pile spring, the rubber pile spring is inserted into the steel spring 401, and the steel spring 401 and the rubber pile spring play a role of buffering at the same time. When the vehicle body is positioned on the bogie, the weight of the vehicle body is transmitted to the steel spring 401 and the rubber pile spring through the side beam 20, and the steel spring 401 and the rubber pile spring are deformed to play a role in shock absorption and buffering.

Wherein, when the frame presses the steel spring 401 downward, the steel spring 401 is deformed in a vertical direction to provide a vertical buffer. The rubber pile spring can generate deformation in the horizontal direction in addition to the deformation in the vertical direction, so that the rubber pile spring can provide buffering in the vertical direction and the horizontal direction.

In this embodiment, the rubber stack spring includes a base 402 and a tapered post 403, the base 402 has a channel 404 extending from the top surface through the bottom surface, and a portion of the tapered post 403 extends from the top end of the base 402 into a portion of the channel 404. Specifically, a certain distance is provided between the bottom surface of the tapered pillar 403 and the horizontal plane where the bottom surface of the base 402 is located, and the top surface of the tapered pillar 403 is higher than the top surface of the base 402, so that the tapered pillar 403 is higher than the base 402. The area enclosed by the inner wall of the channel 404 gradually increases towards the direction away from the bearing 102, the area enclosed by the outer wall of the conical column 403 gradually increases towards the direction away from the bearing 102, and the base 402 and the conical column 403 are connected together through rubber 405. At this time, the rubber stack spring receives the pressure of the frame, and is transmitted to the base 402 via the tapered column 403 and the rubber 405 in this order. Because the outer wall of the conical column 403 and the inner wall of the base 402 form an inclined plane, the vertical pressure can be distributed in the horizontal direction, and the vertical pressure is reduced.

The bottom surface of the conical column 403 is spaced from the horizontal plane of the bottom surface of the base 402, so that a buffering space is formed between the conical column 403 and the base 402, and abrasion caused by contact between the conical column 403 and the base 402 during vertical deformation of the rubber 405 is avoided.

Further, the cross section of the conical column 403 in the vertical direction may be triangular, trapezoidal, etc., as long as the area surrounded by the outer wall of the conical column 403 is gradually increased in the direction away from the bearing 102.

In this embodiment, a bearing adapter 50 is also included, the bearing adapter 50 being positioned between the primary suspension device 40 and the bearing 102, the bearing adapter 50 being used to secure the primary suspension device 40 between the bearing 102 and the sleeve 204. Illustratively, a narrow bearing adapter may be used, which has a simple structure, a small lateral area of a portion in contact with the bearing 102, a small overall size, and a simple installation, and does not occupy extra space substantially, thereby facilitating reduction of the size of the bogie and widening the adaptability of the bogie to different side limits 902.

In this embodiment, a guide frame 208 is disposed at a bottom end of the sleeve 204, and the guide frame 208 is in communication with the sleeve 204. The guide frame 208 may secure the bearing adapter 50 between the bearing 102 and a suspension system 40. The inner wall of the guide frame 208 is provided with a guide block, the guide block extends into two sides of the bearing saddle 50 facing the guide frame 208, and two sides of the bearing saddle 50 are provided with a gap matched with the guide block, so that the guide block is matched with the bearing saddle 50 to position the bearing saddle 50, and the bearing saddle 50 can slide along the guide block and move only in the vertical direction.

In this embodiment, the bearing adapter 50 has a platform 501 on a surface away from the bearing 102, a protrusion 502 on a surface of the platform 501 away from the bearing 102, the protrusion 502 extends into the bottom end of the channel 404, and the bottom surface of the base 402 abuts against the top surface of the platform 501. The pressure that the rubber heap spring received can transmit to platform 501 through base 402, and the area of platform 501 is great, and pressure evenly distributed reduces its pressure intensity that receives to platform 501.

Wherein the protrusion 502 can prevent the base 402 from moving horizontally, i.e. the protrusion 502 can limit the horizontal displacement of the rubber stack spring.

In this embodiment, the top cover 60 is further included, the top cover 60 is located at the top end of the sleeve 204, so as to facilitate the installation of the suspension device 40, and the top cover 60 is fixed on the top end face or the top inner wall of the sleeve 204 by welding.

Wherein, the surface of the upper cover 60 facing the bearing 102 is provided with a first bump, the surface of the first bump facing the bearing 102 is provided with a second bump, the first bump extends into the steel spring 401, and the second bump extends into the groove 406 at the top end of the conical column 403. The first protrusion may prevent the horizontal displacement of the steel spring 401 within the sleeve 204 and the second protrusion may prevent the horizontal displacement of the rubber stack spring.

In this embodiment, the rubber 405 on both lateral sides and bottom side of the tapered pillar 403 has holes 408, the holes 408 include a first hole and a second hole, wherein the rubber 405 on both lateral sides of the tapered pillar 403 has the first hole, and the rubber 405 on the bottom side of the tapered pillar 403 has the second hole.

When the rubber pile spring atress produced vertical deformation, rubber 405 has the cushioning effect to its vertical, because rubber 405 has the second hole, rubber pile spring has the second hole in the vertical promptly, and the vertical rigidity of going up rubber 405 reduces, and the deformation that rubber 405 produced can be bigger, has increased the stroke of buffering, and vertical cushioning effect is stronger. Further, the bottom surface of the second hole may be open, that is, the end of the second hole facing the protrusion 502 is open.

Wherein, because there is air in the second hole, produce vertical deformation when the rubber heap spring atress and can compress the air in the second hole, if the second hole is airtight environment, the compressed air can produce great pressure, probably leads to the rubber heap spring to become invalid. Therefore, the conical pillar 403 may be provided with a through hole 407 penetrating the bottom surface from the top surface, and the through hole 407 communicates the second hole and the concave groove 406. The through hole 407 allows air in the second hole to pass to the external environment through the groove 406, so as to prevent the rubber stack spring from being damaged due to excessive air pressure therein.

When the rubber pile spring atress produced horizontal deformation, rubber 405 transversely has the cushioning effect to it, because rubber 405 has first hole, and rubber pile spring has first hole on horizontal promptly, and the rigidity of rubber 405 on horizontal reduces, and the deformation that rubber 405 produced can be bigger, has increased the stroke of buffering, and the cushioning effect on horizontal is stronger.

Wherein the first hole may extend from the top surface of the rubber 405 through the bottom surface of the rubber 405. At this time, the first hole can communicate with the second hole, and the air in the second hole can be transferred to the external environment through the first hole without providing the through hole 407.

Wherein, holes 408 with different sizes, shapes and numbers can be arranged in the vertical direction, the transverse direction or the longitudinal direction of the rubber 405 according to the requirement. The hole 408 may be internal to the rubber 405, and the hole 408 may also be in communication with the environment external to the rubber 405. Such as holes 408 disposed through the top and bottom surfaces of rubber 405. That is, the space between the conical column 403 and the base 402 can be filled with rubber 405, and one or more holes 408 can be arranged at any position of the rubber 405, so that the rigidity of the rubber 405 in the direction with the holes 408 is reduced, the buffer stroke is increased, the three-way rigidity of the rubber pile spring is reasonably matched, the diamond-resistant rigidity of the bogie can be improved, the vertical, transverse and longitudinal running stability of the vehicle is improved, and the snaking critical speed of the bogie is increased.

Further, rubber 405 may be secured to the post 403 and base 402 by vulcanization.

Alternatively, the side surfaces of the conical pillar 403 may be provided with an included angle, that is, the side edges of the vertical cross section of the conical pillar 403 are not a straight line, but have an inflection point at the portion of the side edges near the bottom end. That is, the lateral cross-sectional area of the outer wall of the bottom end portion of the conical pillar 403 is constant or gradually increased toward the bearing 102. So set up, be favorable to vulcanization technology, and can reduce the vertical shearing force of rubber 405 at the flex point.

The steel spring 401 can provide large empty vehicle deflection, the rubber pile spring provides large buffer stroke, and reasonable matching of three-directional rigidity of the bogie primary suspension device 40 is achieved by designing different holes 408, so that good running quality can be achieved in the empty and heavy vehicle states.

In this embodiment, as shown in fig. 4 and 5, the vehicle body further includes a lower center plate 701, the lower center plate 701 is used for being rotatably connected with the vehicle body, and the lower center plate 701 may be a planar center plate or a spherical center plate. The vehicle body is provided with an upper center plate at a position corresponding to the lower center plate 701, and the weight of the vehicle body is transmitted to the lower center plate 701 through the upper center plate.

Illustratively, the lower core plate 701 may be a planar core plate. That is, the contact surfaces of the upper core plate and the lower core plate 701 are both flat, the vertical load is transmitted from the flat surface of the core plate to the next stage member, and the transverse and longitudinal loads are received by the flange on the periphery of the lower core plate 701. The lower center plate 701 is arranged on the outer top surface of the cross beam 30 in a bolt connection or/and welding mode, a through center hole is formed in the middle of the lower center plate 701, the center pin 702 penetrates through the center hole, and the center plate slipping phenomenon in the vehicle running process is avoided due to the effect of the center pin 702. The structure is simple, the manufacturing cost is low, and the maintenance and the replacement are convenient. The outer wall of the center pin 702 is provided with a limiting ring 703, and the limiting ring 703 is located at the top end of the center hole and can prevent the center pin 702 from continuously moving downwards. Compared with the method that the support seat is arranged in the middle of the inner wall of the cross beam 30 and opposite to the bottom end of the center pin 702 to prevent the center pin 702 from continuously moving downwards, the manufacturing process of the limiting ring 703 is simpler. The stop collar 703 may be integrally formed or welded with the core pin 702.

In order to prolong the service life of the center plate, reduce the overhaul and maintenance cost in the running process of a vehicle, avoid the direct contact between the upper center plate and the lower center plate 701 and increase the abrasion plate 704 between the upper center plate and the lower center plate 701. Center pin 702 is inserted through wear plate 704 and lower center plate 701 in sequence. Wear plate 704 may be replaced after damage.

Alternatively, the lower core plate 701 may be a spherical core plate. The upper center plate on the vehicle body is a convex spherical surface, and the lower center plate 701 is a concave spherical surface. That is, the upper core plate is protruded toward the bottom surface of the cross member 30, and the lower core plate 701 is also protruded toward the bottom surface of the cross member 30. The spherical surfaces of the upper and lower center plates 701 mate with each other. Vertical, longitudinal and transverse loads are all transferred against the sphere. Part of the spherical surface of the lower core plate 701 can be accommodated in the beam 30 after opening on the top surface of the beam 30, and the lower core plate 701 can be connected to the beam 30 by welding or/and bolt connection.

In order to prolong the service life of the center plate, a replaceable spherical wear plate 704 can be arranged between the upper center plate and the lower center plate 701. The top end of the inner wall of the lower core plate 701 is annularly provided with a stop ring 705 to prevent the wear plate 704 from deviating from the position between the upper core plate and the lower core plate 701.

When the center plate 701 is detachably attached to the cross member 30 by bolting or the like, the plane center plate and the spherical center plate can be replaced as required.

In this embodiment, as shown in fig. 1 and 2, lower side bearings 306 are disposed at both ends of the top surface of the cross beam 30, the lower side bearings 306 are disposed perpendicular to the axial direction of the cross beam 30, and are disposed in opposite directions, and an upper side bearing is disposed at a position of the vehicle body opposite to the lower side bearings 306. The side bearing is additionally arranged between the vehicle body and the bogie, so that the snake-shaped motion of the bogie can be effectively inhibited, the side rolling and shaking motions of the vehicle body when the vehicle passes through a curve are inhibited, and the stability of the vehicle is improved. Illustratively, the side bearing may be a normally-contacting side bearing, which is subjected to a nominal amount of compression when the body is placed on the bogie, thereby creating a pre-load between the upper side bearing and the lower side bearing 306, and when the bogie and the body have a relative rotation or a relative rotation tendency, a frictional resistance is created between the contact surfaces of the upper side bearing and the lower side bearing 306, because the frictional resistance on the side bearings at the two ends of the cross member 30 are in opposite directions, thereby creating an appropriate rotation resistance moment.

In this embodiment, a brake device is further provided to generate a necessary braking force to decelerate or stop the vehicle at a predetermined distance, and the brake device may be a brake using a center-pull-rod-and-slide-type one-side shoe brake. The function of the brake device is to transmit and amplify the braking force to each brake shoe 805, so that the brake shoes 805 are pressed against the wheel 103 to generate the braking action. The braking device includes at least: a travelling lever 803, a center tie 804, a first brake beam 801, a second brake beam 802, rollers, etc. The braking force is firstly applied to a traveling lever 803 of the braking device, the traveling lever 803 drives a first brake beam 801 connected with one end of a middle pull rod 804 to move in a direction away from the cross beam 30, the middle pull rod 804 penetrates through an opening 305 in the middle of a second web 303, the other end of the middle pull rod 804 is connected with a second brake beam 802, the middle pull rod 804 drives the second brake beam 802 to also move in a direction away from the cross beam 30, rollers at two ends of the first brake beam 801 and the second brake beam 802 move in a direction away from the cross beam 30 along a sliding groove 209 at the bottom end of the side beam 20, namely, brake shoes respectively move towards the corresponding wheels 103 and are locked with the wheels 103, and the wheels 103 are prevented from further rotating.

Some bogies require specialized components for various fittings such as the wheelset 10, bearings 102, brakes, lower side bearings 306, etc. to meet high axle loads and high speeds. The bogie can be applied to engineering vehicles, and the engineering vehicles have low requirements on axle weight and speed and only need to meet the requirements on 14t axle weight and 100km/h running speed, so that standard accessories can be used, the interchangeability of the accessories is high, and the manufacturing cost and the later maintenance cost can be reduced.

This embodiment provides a welded frame bogie, where the lower side bearing 306 and lower center plate 701 on the bogie are connected to the upper side bearing and upper center plate on the vehicle body, so that the weight of the vehicle body is transmitted through the lower side bearing 306 and lower center plate 701 to the frame, primary suspension 40, bearing adapter 50, bearing 102, axle 101 and wheels 103 in turn, and finally to the track through the wheels 103. The traction device of the rail train generates traction force on the bogie, the wheel pair 10 of the bogie moves in a rotating mode relative to the rail, and the bogie and the train body on the bogie move along the direction of the traction force. In the movement process of the vehicle body, the steel spring 401 and the rubber pile spring in the primary suspension device 40 deform to play a role in damping and buffering. Through designing different holes 408, the reasonable matching of the three-directional rigidity of the bogie primary suspension device 40 is realized, so that the bogie primary suspension device has good running quality under the empty and heavy vehicle states. When deceleration or parking is required, the brake device will transmit and amplify the braking force to each brake shoe 805, so that the brake shoes 805 press against the wheel 103 to lock the wheel 103, thereby generating a braking action.

In addition, the embodiment also provides a rail train, which at least comprises a braking device and the welding framework type bogie in the embodiment. The brake cylinder of the rail train generates a braking force, and after the braking force is transmitted to the brake shoe 805 through the braking device, the brake shoe 805 is locked with the wheel 103, so that the wheel 103 is prevented from further rotating.

In this embodiment, the vehicle body is further provided, and the vehicle body is connected with the bogie through an upper side bearing and an upper center plate at the bottom of the vehicle body and a lower side bearing 306 and a lower center plate 701 at the top of the bogie, and transmits the load of the vehicle body to the bogie.

The embodiment provides a railway train, the traction device generates traction force to the bogie and the train body, the wheel set 10 of the bogie rotates relative to the railway, and the bogie and the train body on the bogie move along the direction of the traction force. In the movement process of the vehicle body, the steel spring 401 and the rubber pile spring in the primary suspension device 40 deform to play a role in damping and buffering. Through designing different holes 408, the reasonable matching of the three-directional rigidity of the bogie primary suspension device 40 is realized, so that the bogie primary suspension device has good running quality under the empty and heavy vehicle states. When deceleration or parking is required, the brake device will transmit and amplify the braking force to each brake shoe 805, so that the brake shoes 805 press against the wheel 103 to lock the wheel 103, thereby generating a braking action.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A welded frame bogie, comprising: the wheel set comprises two groups of wheel sets arranged in parallel at intervals, two side beams arranged in parallel at intervals and a cross beam positioned between the side beams, wherein two ends of the cross beam are respectively connected with the middles of the two side beams;

two ends of the wheel pairs are respectively rotatably positioned on the bottom surfaces of the two side beams, and the cross beam is positioned between the two groups of the wheel pairs;

the side beam is of a single-web box-type structure and comprises a first cover plate, a first base plate and a first web, wherein the first cover plate and the first base plate are arranged at intervals, the first web is located between the first cover plate and the first base plate, and the first web is connected with the first cover plate and the first base plate.

2. The welding frame type bogie according to claim 1, wherein said wheel set comprises an axle, two bearings and two wheels, said two bearings and said two wheels are respectively located at both ends of said axle, and said bearings are located at outer sides of said wheels, said bearings being disposed opposite to bottom surfaces of both ends of said side beams.

3. The welded frame bogie of claim 2, further comprising a primary suspension device positioned between the side beams and the bearing, wherein a sleeve is positioned between the ends of the side beams, and wherein the sleeve is positioned outside the primary suspension device.

4. The welded frame bogie of claim 3, wherein the primary suspension device further comprises a steel spring and a rubber stack spring, the rubber stack spring being disposed through the steel spring.

5. The welding framework type bogie of claim 4, wherein the rubber stack spring comprises a base and a conical column, the base is provided with a channel penetrating from the top surface to the bottom surface, part of the conical column penetrates into part of the channel from the top end of the base, the area enclosed by the inner wall of the channel is gradually increased towards the direction away from the bearing, the area enclosed by the outer wall of the conical column is gradually increased towards the direction away from the bearing, and the base and the conical column are connected together through rubber vulcanization.

6. The welding frame bogie of claim 5, further comprising a bearing adapter positioned between the primary suspension device and the bearing, wherein a face of the bearing adapter distal from the bearing has a platform, wherein a face of the platform distal from the bearing has a protrusion extending into the bottom end of the channel, and wherein the bottom surface of the base abuts the top surface of the platform.

7. The welding frame type bogie according to claim 6, further comprising an upper cover, wherein the upper cover is located at the top end of the sleeve, a first bump is arranged on one surface of the upper cover facing the bearing, a second bump is arranged on one surface of the first bump facing the bearing, the first bump extends into the steel spring, and the second bump extends into the groove at the top end of the conical column.

8. A welded frame bogie as claimed in claim 7, wherein said rubber on both lateral sides and bottom side of said tapered column has holes.

9. A welded framework bogie as claimed in any of claims 1 to 8 further comprising a lower core plate for pivotal connection to the vehicle body, said lower core plate being a planar or spherical core plate.

10. A rail train comprising at least a braking device and a welded frame bogie according to any of the preceding claims 1-9.

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