阅读说明：本技术 一种摇枕、三大件式转向架以及重载铁路货车 (Swing bolster, three-piece type bogie and heavy-duty railway wagon ) 是由 江荷燕 李华宴 徐勇 易军恩 唐应文 严志雄 宋帆 黎巧能 汪勇 吴先年 管希 于 2021-07-09 设计创作，主要内容包括：本发明公开了一种摇枕、三大件式转向架以及重载铁路货车,涉及铁路货车技术领域,解决了现有技术中由于摇枕结构强度的限制以及与制动装置制动倍率的局限而导致部分三大件式转向架无法进行加大轴重运输的技术问题。摇枕包括摇枕本体,摇枕本体安装于转向架上；以及,至少两组盘式制动吊座,摇枕本体的端面两侧均分别设有一组盘式制动吊座,相邻盘式制动吊座之间相互对称,盘式制动吊座具有倾斜部和平面部,平面部通过倾斜部与摇枕本体连接,平面部的端面高于摇枕本体的端面；其中,摇枕本体和盘式制动吊座为一体成型结构。本发明通过将盘式制动吊座和摇枕本体铸成一体成型结构,使得三大件式转向架具有加大轴重运输的能力。(The invention discloses a swing bolster, a three-piece type bogie and a heavy-duty railway wagon, relates to the technical field of railway wagons, and solves the technical problem that in the prior art, part of the three-piece type bogie cannot be transported with increased axle weight due to the limitation of structural strength of the swing bolster and the limitation of braking multiplying power of a braking device. The swing bolster comprises a swing bolster body, and the swing bolster body is arranged on the bogie; the two sides of the end surface of the swing bolster body are respectively provided with one group of disc brake hanging seats, adjacent disc brake hanging seats are symmetrical, each disc brake hanging seat is provided with an inclined part and a plane part, the plane part is connected with the swing bolster body through the inclined part, and the end surface of the plane part is higher than the end surface of the swing bolster body; wherein, the swing bolster body and the disc type brake hanging seat are of an integrated structure. According to the invention, the disc type brake lifting seat and the swing bolster body are cast into an integrated structure, so that the three-piece type bogie has the capacity of increasing axle weight transportation.)

1. A bolster for large axle load transport of a three piece truck comprising:

the swing bolster comprises a swing bolster body (1), wherein the swing bolster body (1) is installed on the bogie; and the number of the first and second groups,

the two sides of the end face of the swing bolster body (1) are respectively provided with one group of disc brake hanging seats (101), the adjacent disc brake hanging seats (101) are symmetrical to each other, each disc brake hanging seat (101) is provided with an inclined part (1011) and a plane part (1012), the plane part (1012) is connected with the swing bolster body (1) through the inclined part (1011), the end face of the plane part (1012) is higher than the end face of the swing bolster body (1), and each disc brake hanging seat (101) is screwed with a disc brake device (1013);

the swing bolster body (1) and the disc type brake hanging seat (101) are of an integrally formed structure.

2. The bolster according to claim 1, characterized in that at least two sets of first support rib plates (1014) are arranged between the disc brake suspension seat (101) and the side wall of the bolster body (1), and a half-box structure (1015) is formed between the at least two sets of first support rib plates (1014) and the disc brake suspension seat (101).

3. The bolster according to claim 2, characterized in that a second support rib plate (1016) is connected between the disc brake suspension seat (101) and the side wall of the bolster body (1), wherein the second support rib plate (1016) is located between the two first support rib plates (1014).

4. The bolster according to claim 3, characterized in that a reinforcing rib (1017) is connected between the inclined portion (1011) and the bolster body (1) for reinforcing the strength of the inclined portion (1011).

5. The bolster according to claim 4, characterized in that a first through hole (108) is formed in the position, between the two first support rib plates (1014), of the side wall of the bolster body (1) for installing a water-resistant diamond structure.

6. The swing bolster according to claim 5, characterized in that a circular arc rib plate (1018) is connected between the side wall of the disc brake hanging seat (101) and the swing bolster body (1) and used for preventing the inclined part (1011) from cracking with the swing bolster body (1) after being stressed.

7. The bolster according to claim 6, wherein the bolster body (1) is integrally cast with a retaining portion (102), the retaining portion (102) is located between two disc brake bases (101) on the same side, a groove (1021) is formed in the retaining portion (102), and a second through hole (1022) penetrating through the groove (1021) is formed in a side wall of the retaining portion (102);

wherein the second through hole (1022) has an elliptical structure.

8. The swing bolster according to any one of claims 1 to 7, characterized in that side bearing boxes (104) are integrally cast at both ends of the swing bolster body (1), and a notch (1041) is formed in a side wall of each side bearing box (104) so as to detachably mount the side bearing body.

9. The bolster according to claim 8, wherein a lower core plate (103) is integrally cast at the center of an upper plane of the bolster body (1), a pin hole (1031) is formed in the center of the lower core plate (103), the lower core plate (103) is connected with a center pin (1032) through the pin hole (1031), and a baffle structure (1033) matched with the center pin (1032) is arranged on the lower core plate (103).

10. The bolster according to claim 9, wherein wedge grooves (106) for installing wedges and symmetrically arranged are formed in two ends of the bolster body (1), an inclined block (105) located on the upper plane of the bolster body (1) extends and is connected to the back of the splayed surface of the wedge groove (106), the inclined block (105) is higher than the plane of the bolster, and a reinforcing piece (1051) is connected between two sides of each inclined block (105) and the bolster body (1) and used for reinforcing the strength of the inclined block (105).

11. The bolster according to claim 10, characterized in that the periphery of the splayed surface of the wedge groove (106) is provided with a plurality of rib stoppers (1053) and stoppers (7), the splayed surface of the wedge groove (106) is connected with a wear plate (6), the wear plate (6) is limited in a range enclosed by the rib stoppers (1053), the corner of the side wall of the wedge groove (106) is provided with a chamfer structure (1061), the secondary friction surface of the wedge is in contact with the wear plate (6), and the wedge is limited in the side wall of the wedge groove (106).

12. A three-piece truck comprising at least one set of side frames (3) and a bolster according to any of claims 1-11, said bolster being mounted in said side frames (3).

13. A heavy goods railway wagon comprising a plurality of three-piece bogies according to claim 12.

Technical Field

The invention relates to the technical field of railway wagons, in particular to a swing bolster, a three-piece type bogie and a heavy-duty railway wagon.

Background

At present, the three-piece bogie can only be assembled with a common lever brake on the bolster structure, namely, a brake shoe is used for directly rubbing a wheel to brake. Lever braking, to the transportation of part increase axle load, bolster and arresting gear design space's mutual limitation, the restriction increases the design of axle load bolster intensity, the limitation of arresting gear braking multiplying power is difficult to realize stable braking, its braking effect is poor when leading to the braking, lead to three major possession formula bogies to carry out the transportation of part increase axle load on the one hand, make it have very big limitation, on the other hand, brake shoe direct friction wheel can lead to the fact serious wearing and tearing to the wheel, increase practical cost.

Disclosure of Invention

In view of the above, an object of the present invention is to overcome the disadvantages of the prior art, and in a first aspect, a bolster is provided to solve the technical problem in the prior art that transportation of a part of three-piece bogies with increased axle weight is not possible due to the limitation of structural strength of the bolster and the limitation of braking magnification of a braking device.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a bolster for large axle load transport of a three piece truck comprising:

the swing bolster body is mounted on the bogie; and the number of the first and second groups,

the two sides of the end surface of the swing bolster body are respectively provided with one group of disc brake hanging seats, the adjacent disc brake hanging seats are symmetrical, each disc brake hanging seat is provided with an inclined part and a plane part, the plane part is connected with the swing bolster body through the inclined part, the end surface of the plane part is higher than the end surface of the swing bolster body, and each disc brake hanging seat is in threaded connection with a disc brake device;

the swing bolster body and the disc type brake hanging seat are of an integrally formed structure.

Optionally, at least two groups of first supporting rib plates are arranged between the disc type braking hanging seat and the side wall of the swing bolster body, and a half-box structure is formed between the at least two groups of first supporting rib plates and the disc type braking hanging seat.

Optionally, a second support rib plate is connected between the disc brake hanging seat and the side wall of the swing bolster body, wherein the second support rib plate is located between the two first support rib plates.

Optionally, a reinforcing rib is connected between the inclined portion and the swing bolster body and used for reinforcing the strength of the inclined portion.

Optionally, a first through hole is formed in a position, between the two first support rib plates, of the side wall of the swing bolster body, and the side wall is used for installing an anti-diamond structure.

Optionally, an arc rib plate is connected between the side wall of the disc brake hanging seat and the swing bolster body and used for preventing the inclined part from cracking with the swing bolster body after being stressed.

Optionally, an anti-drop part is integrally cast on the swing bolster body, the anti-drop part is located between the two disc brake hanging seats on the same side, a groove is formed in the anti-drop part, and a second through hole communicated with the groove is formed in the side wall of the anti-drop part;

wherein, the second through hole is of an oval structure.

Optionally, the equal integrative casting in both ends of truck bloster body has the side bearing box, every the notch has all been seted up on the lateral wall of side bearing box to but the side bearing body of demountable installation.

Optionally, a lower center plate is integrally cast at the center of the upper plane of the swing bolster body, a pin hole is formed in the center of the lower center plate, the lower center plate is connected with a center pin through the pin hole, and a baffle platform structure matched with the center pin is arranged on the lower center plate.

Optionally, the two ends of the bolster body are provided with wedge grooves used for installing wedges and symmetrically arranged, the back of the splayed surface of each wedge groove is connected with an inclined block located on the upper plane of the bolster body in an extending mode, and a reinforcing piece is connected between each of the two sides of each inclined block and the bolster body and used for reinforcing the strength of each inclined block.

Optionally, a plurality of rib baffles are arranged on the periphery of the eight-shaped surface of the wedge groove, a wear plate is connected to the surface of the eight-shaped surface of the wedge groove, the wear plate is limited in a range surrounded by the plurality of rib baffles, a chamfer structure is arranged at the corner of the side wall of the wedge groove, an auxiliary friction surface of the wedge is in contact with the wear plate, and the wedge is limited in the side wall of the wedge groove.

In a second aspect, the invention provides a three piece truck comprising at least one set of side frames and a bolster according to any one of the claims, the bolster being mounted within the side frames.

In a third aspect, the invention provides a heavy goods railway wagon comprising a plurality of three-piece bogies according to the claims.

Compared with the prior art, the swing bolster provided by the invention has the beneficial effects that:

the invention casts the disc type brake hanging seat and the swing bolster body into an integrated structure, thereby omitting the processes of welding and the like among all parts of the swing bolster in the prior art, for example, the disc brake hanging seat is welded on the swing bolster body, thereby effectively avoiding the problems of welding fatigue crack risk, inconvenient disassembly and assembly error chain increase caused by a welding process, in addition, the integral forming structure ensures that the swing bolster body has strong structural strength, so that the swing bolster can meet the requirement of increasing the axle load transportation, in addition, the invention designs the disc brake hanging seat on the swing bolster to replace the prior lever brake hanging seat, the disc brake hanging seat is arranged into an inclined part and a plane part, the end surface of the plane part is higher than the end surface of the swing bolster body, the swing bolster has sufficient space on the swing bolster body to install the disc type brake device, and the limitation of the brake multiplying power of the lever brake device in the prior art is overcome. The invention effectively solves the technical problem that in the prior art, the axle weight of part of three large-piece type bogies cannot be increased for transportation due to the limitation of the structural strength of the swing bolster and the limitation of the braking multiplying power of the braking device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 an isometric view of a bolster of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a top and bottom view of a bolster of the present invention, with the left side shown in a bottom view of the bolster of the present invention and the right side shown in a top view of the bolster of the present invention;

FIG. 4 is a front cross-sectional view of the bolster of the present invention;

FIG. 5 is a top plan view of the bolster of the present invention with a disc brake device installed;

figure 6 is an isometric view of the truck of the present invention.

In the figure:

1-bolster body, 101-disc brake hanger, 1011-inclined part, 1012-plane part, 1013-disc brake device, 1014-first support rib plate, 1015-half box type structure, 1016-second support rib plate, 1017-reinforcing rib, 1018-arc rib plate, 102-anti-drop part, 1021-groove, 1022-second through hole, 103-lower center plate, 1031-pin hole, 1032-center pin, 1033-baffle platform structure, 104-side bearing box, 1041-notch, 105-inclined block, 1051-reinforcing piece, 1053-rib baffle, 106-inclined wedge groove, 1061-chamfer structure, 107-spring bearing surface, 108-first through hole, 2-side bearing body, 3-side frame, 4-wheel, 401-axle and 5-brake disc, 6-wear plate, 7-block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The first embodiment is as follows:

the invention provides a swing bolster for large axle load transportation of a three-piece bogie, which comprises a swing bolster body 1 and four disc brake lifting seats 101 in a limiting mode, as shown in figures 1 and 5. The disc type brake hanging seat 101 and the swing bolster body 1 are of an integrally cast structure, wherein the section of the swing bolster body 1 is of a fish belly type structure, the self weight is light, and the manufacturing cost is low. The disc type brake hanging seat 101 is welded on the swing bolster body in the prior art, on one hand, risks of increasing assembly errors are welded, on the other hand, when braking is carried out in the process of increasing axle load transportation, a welding part is easy to fatigue, cracks are generated, and the disc type brake hanging seat is not easy to disassemble and replace after being damaged. According to the invention, the disc type brake lifting seat 101 and the swing bolster body 1 are cast into a whole, so that the problems caused by welding can be effectively avoided, and the integrally cast structure has strong structural strength, so that the swing bolster body 1 has the brake capability during axle weight transportation.

Specifically, as shown in fig. 1, two disc brake suspension bases 101 are respectively disposed on both sides of the bolster body 1 at intervals, two adjacent disc brake suspension bases 101 are symmetrical to each other, that is, the disc brake suspension bases 101 on both sides of the bolster body 1 are symmetrical to each other, and two disc brake suspension bases 101 on one side of the bolster body 1 are also symmetrical to each other. As shown in fig. 5, each disc brake hanger 101 is screwed with a disc brake unit 1013. It should be noted that, by the above-mentioned symmetrical arrangement between the disc brake hangers 101, the present invention can provide balanced braking force during large axle load transportation braking, so as to avoid unbalanced braking force and damage to the disc brake hanger 101 or the disc brake device 1013.

As shown in fig. 1, the disc brake suspension 101 has an inclined portion 1011 and a plane portion 1012, the plane portion 1012 is connected to the bolster body 1 through the inclined portion 1011, and the end surface of the plane portion 1012 is higher than the end surface of the bolster body 1, as shown in fig. 5, by arranging the disc brake suspension 101 as the plane portion 1012 and the inclined portion 1011, the bottom space of the disc brake suspension 101 is increased, so that there is enough space for installing the disc brake device 1013, meanwhile, it is worth explaining that in the prior art, a connecting beam must be separately arranged for welding and installing the disc brake suspension 101, the design structure and the design space of the bolster body 1 are limited, and there is a certain limitation, while in the present invention, the disc brake suspension 101 and the bolster body 1 are cast into an integral structure, which is equivalent to omitting the connecting beam in the prior art, which is beneficial to saving space, and the width design of the bolster body 1 can be increased, so as to increase the axle load transportation capacity of the bolster body 1.

It should be noted that when casting the planar portion 1012 of the disc brake hanger 101, the end surface directly contacting the disc brake 1013 should be reserved with a 3-5mm boss for finish machining to ensure that the four disc brake 1013 are located on the same plane after installation. The installation symmetry of the disc brake devices 1013 is ensured, the braking force between the disc brake devices 1013 is balanced when the disc brake devices 1013 are in action, and the uneven wear of the disc brake devices 1013 or components matched with the disc brake devices 1013 caused by the unbalanced braking force is prevented, so that the braking force between the disc brake devices 1013 is greatly deviated when the disc brake devices 1013 are in action, and the braking effect is influenced.

As shown in fig. 1 and 3, at least one set of first support rib plates 1014 and at least one second support rib plate 1016 are connected between the disc brake suspension 101 and the side wall of the bolster body 1, and the second support rib plate 1016 is located between the two first support rib plates 1014. All be connected with convex gusset 1018 between the both sides wall of disc braking hanger seat 101 and the truck bolster body 1, can effectively prevent the disc braking hanger seat 101 atress back through the convex gusset 1018 that sets up, fracture between disc braking hanger seat 101 and the truck bolster body 1, be connected with strengthening rib 1017 between rake 1011 and the truck bolster body 1. It should be noted that a half-box structure 1015 is formed between the two first supporting webs 1014 and the disc brake hanger 101 to reserve a sufficient installation space for installing the disc brake device 1013. It is expected that the structural strength of the disc brake hanger 101 can be further improved and the crack resistance of the disc brake hanger 101 during braking can be enhanced by the arrangement of the first support rib plate 1014, the second support rib plate 1016 and the reinforcing rib 1017.

As shown in fig. 4, a first through hole 108 is provided on a side wall of the bolster body 1 between two first support rib plates 1014, and through the provided first through hole 108, an anti-diamond mechanism including, but not limited to, a flexible hinge device, a middle cross support, etc. can be arranged in the bolster body 1, thereby increasing the overall anti-diamond rigidity of the bolster bogie for installation.

As shown in fig. 1, a lower core plate 103 is integrally cast at the center of the upper plane of the bolster body 1, and a pin hole 1031 is formed at the center of the lower core plate 103. As shown in fig. 4, a center pin 1032 is inserted into the pin hole 1031, a stop structure 1033 is further provided on the lower core plate 103, and by the stop structure 1033, the center pin 1032 can be inserted directly into a designated position on the bolster body 1 after passing through the pin hole 1031 without taking time to align the position where the center pin 1032 is inserted. It must be pointed out that, in the invention, the disc brake hanging seat 101 and the bolster body 1 are cast into an integral structure, so that the width of the bolster body 1 is increased, similarly, the planar design diameter of the lower center plate 103 is increased, when the bolster body 1 and a carriage are matched for large axle load transportation, the contact area between the upper center plate on the carriage and the lower center plate 103 on the bolster body 1 is increased, on one hand, the contact surface abrasion of the upper center plate 103 and the lower center plate 103 can be reduced, on the other hand, the contact area between the upper center plate 103 and the lower center plate 103 is increased, so that the load balancing performance is obviously improved, and the lower center plate 103 is effectively prevented from being extruded and deformed when a curve line runs.

As shown in fig. 1, the anti-falling portions 102 are integrally cast on two side walls of the bolster body 1 near the lower core 103, the two anti-falling portions 102 include but are not limited to symmetrical arrangement or staggered arrangement, each anti-falling portion 102 is provided with a groove 1021, the side wall of the anti-falling portion 102 is provided with a second through hole 1022 penetrating through the groove 1021, and the second through hole 1022 is of an elliptical structure. Through the anticreep portion 102 that sets up, when carriage and the cooperation of truck bolster body 1, the inserted block on the carriage inserts in recess 1021 and inserts second through-hole 1022 through the connecting pin, and the inserted block locks the carriage on truck bolster body 1, can prevent that the carriage from droing in the transportation, must sufficient clearance between the peripheral and the anticreep portion 102 of inserted block.

It should be noted that, during transportation with large axle load, especially on a curved line, due to inertia, the car will have a certain rotation and unbalance load on the lower center plate 103 around the center pin 1032 through the upper center plate, that is, there will be a certain source of abrasion between the upper center plate and the lower center plate 103, there is sufficient clearance between the periphery of the insert block and the anti-slip part 102, and the second through hole 1022 is configured in an elliptical structure, so that the connecting pin can be displaced in the second through hole 1022, so that the anti-slip part 102 will not limit the rotation and inclination of the car between the car and the bolster body 1 during transportation. It can be understood that if the insert block is inserted into the groove 1021 to be abutted against the retaining portion 102, or the connecting pin is abutted against the second through hole 1022, the retaining portion 102 completely limits the relative movement between the car and the bolster body 1, and during transportation, especially when passing through a curved line, due to inertia, the inertia force generated by the car is directly transmitted to the wheel 4, so that the wheel load reduction is increased, and in severe cases, overturning may occur, which is sufficient for the ingenuity and importance of the invention in designing the second through hole 1022 to be an elliptical structure.

As shown in fig. 1 and 6, the side bearing box 104 is integrally cast at both ends of the bolster body 1 for placing the side bearing body 2, and a notch 1041 is formed in the side wall of the side bearing box 104, of course, the notch 1041 may be V-shaped or arc-shaped, etc., and the side installation condition of the side bearing body 2 is conveniently observed through the notch 1041, and the side bearing body 2 is conveniently taken out for maintenance.

As shown in fig. 1, two symmetrical wedge grooves 106 are provided at both ends of the bolster body 1 for installing wedges. The inclined block 105 positioned on the upper plane of the bolster body 1 is connected to extend along the back of the splayed surface of the inclined wedge groove 106 so as to increase the splayed surface area of the inclined wedge groove 1066, namely the splayed surface area of the inclined wedge groove 1066 is the sum of the splayed surface area of the bolster body 1 and the side wall area of the inclined block 105 due to the arranged inclined block 105 of the inclined wedge groove 1066. A reinforcement 1051 is connected between both sides of each swash block 105 and the bolster body for reinforcing the strength of the swash block 105. Normally, the friction surface of the cam is in contact with the splayed surface of the cam groove 106, and both side walls of the cam are in contact with the bolster body 1, so that the cam moves only in the up-down direction. The two inclined blocks 105 and the reinforcing piece 1051 at the same end ensure the strength of the bolster body 1 at the inclined wedge groove 106, ensure the stressed support of the inclined wedge, and increase the area of the splayed surface, thereby increasing the area of the damping friction surface.

As shown in fig. 1 and 2, a plurality of rib stoppers 1053 are further disposed on the periphery of the figure-of-eight surface of the cam slot 106 of the bolster body 1, and the shape and length of each rib stopper 1053 can be set according to actual requirements, for example, in this embodiment, two symmetrical rib stoppers 1053 are disposed at the lower end of the figure-of-eight surface of the cam slot 106, a stopper 7 matched with the rib stopper 1053 is disposed at the upper end of the figure-of-eight surface of the cam slot 106, and a wear plate 6 is detachably disposed between the rib stopper 1053 and the stopper 7, it can be understood that the wear plate 6 is equivalent to be limited in the range enclosed by the rib stopper 1053 and the stopper 7, and naturally, the stopper 7 can also be configured similar to the rib stopper 1053, and the wear plate 6 contacts with the friction surface of the cam pair. The splayed surface of the wedge groove 106 on the swing bolster body 1 can be prevented from being worn by the wedge through the arranged wearing plate 6, and the wearing plate 6 can be prevented from falling off and jumping out in the process of wearing the wedge through the arranged rib stopper 1053 and the stopper 7. It can be understood that if the rib stop 1053 and the stopper 7 are not provided, the wear plate 6 may fall off to other places due to long-term wear of the wedge, and even block the motion of the bolster body 1 in severe cases, which may cause an accident.

It should be noted that, the sidewall corner portion of the bolster body 1, at which the cam groove 106 is formed, has the chamfer structure 1061, and it can be understood that, through the chamfer structure 1061, when the cam is installed on the bolster body 1, a gap is formed between the cam and the chamfer structure 1061, which can facilitate the detachment of the cam, and meanwhile, the cam having the enlarged edge, i.e., the T-shaped cam, can also be installed through the chamfer structure 1061.

Example two:

the bogie provided by the invention comprises a swing bolster, a plurality of load bearing springs, at least one group of side frames 3, four wheels 4 and four brake discs 5 in the first embodiment as shown in fig. 6. Every two wheels 4 are mounted on the side frames 3 through axles 401, two brake discs 5 are further sleeved on the axles 401 between the wheels 4, and the brake discs 5 are clamped in the disc brake device 1013. The bogie provided by the invention can be used for carrying out transportation by increasing the axle weight, and the principle is explained in the first embodiment.

It should be noted that the configuration of the above-mentioned components includes, but is not limited to, the number of the above-mentioned configurations, and other combinations, and those skilled in the art can configure themselves after understanding the principle thereof.

Example three:

the invention provides a heavy-duty railway wagon which comprises a plurality of bogies in the second embodiment, a plurality of carriage bodies and a plurality of connecting pins. Each carriage body is provided with an inserting block matched with the groove 1021 and an upper center plate matched with the lower center plate 103, and the inserting block is provided with a connecting hole. The carriage body is detachably mounted on the bogie through the upper center plate, the lower center plate 103, the center pin 1032, the side bearing body 2 and the anti-falling part 102, the connecting pin penetrates through the second through hole 1022 and the connecting hole to lock the carriage body on the bogie, and the carriage body is prevented from falling off from the bogie in the transportation process. The heavy-duty railway wagon provided by the invention can be used for increasing axle load transportation, and the principle is the same as that of the heavy-duty railway wagon.

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 person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.