UNDERNEATH TYPE RAILWAY FREIGHT CAR BOGIE WHEELSET RADIAL DEVICE

Abstract

An underneath type railway freight car bogie wheelset radial device has front and rear subframes and two cross-arranged connecting rods that are pinned by round pin connectors. The subframe is a combination structure of the adapter and the lateral arm. The connecting rods are arranged under the bolster to form the underneath bogie wheelset radial structure. The height of the central plane of the connecting rod is lower than the height of the central plane of the subframe adapter surface. The adapter has an adapter surface forming an arc-shaped adapter structure and an adapter connecting arm integrated with the adapter surface structure and vertically arranged at one end of the adapter surface; the subframes are fixed to the adapter by the rivet assembly.

Claims

1. An underneath type railway freight car bogie wheelset radial device, comprising front and rear subframes and two cross-arranged connecting rods that are pinned by round pin connectors, characterized in that: the subframe is a combination structure of the adapter and the lateral arm; the connecting rod is arranged under the bolster to form the underneath bogie wheelset radial structure; the height of the central plane of the connecting rod is lower than the height of the central plane of the subframe adapter surface.

2. The underneath type railway freight car bogie wheelset radial device according to claim 1, characterized in that: the adapter comprises an adapter surface forming an arc-shaped adapter structure and an adapter connecting arm integrated with the adapter surface structure and vertically arranged at one end of the adapter surface; the adapter connecting arm is provided with multiple groups of adapter connecting holes and an adapter locking hole located at the center; a vertically structured lateral arm flange is provided at the end of the lateral arm, and the lateral arm flange is provided with multiple groups of lateral arm connecting holes corresponding to the adapter connecting holes and a lateral arm bolt located at the center; the subframe is formed by fixing the connecting holes of the adapter and the connecting holes of the lateral arm with the rivet assembly, and locking the lateral arm bolt passing through the locking hole of the adapter with a lock pin.

3. The underneath type railway freight car bogie wheelset radial device according to claim 2, characterized in that: the adapter connecting holes and the lateral arm connecting holes are provided in three groups and arranged in a triangle.

4. The underneath type railway freight car bogie wheelset radial device according to claim 3, characterized in that: the adapter connecting arm at one end of the adapter has a box-shaped section.

5. The underneath type railway freight car bogie wheelset radial device according to claim 4, characterized in that: the connecting rods are cross-arranged, and the ends are embedded in the mounting grooves of the subframe and connected by round pins.

6. The underneath type railway freight car bogie wheelset radial device according to claim 4, characterized in that: a rigid bushing or an elastic hinge can be provided at each end of the connecting rods.

7. The underneath type railway freight car bogie wheelset radial device according to claim 4, characterized in that: there is a small gap between the round pins and the subframes and the connecting rods and a rotational degree of freedom around the axis of the round pins.

Description

DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a schematic diagram of the isometric structure of an existing subframe radial bogie;

[0019] FIG. 2 is a schematic diagram of the isometric structure of an existing wheelset radial device;

[0020] FIG. 3 is a schematic diagram of the isometric structure of a radial bogie using the present invention;

[0021] FIG. 4 is a schematic diagram of the axonometric structure of the radial device of the present invention;

[0022] FIG. 5 is an exploded view of the subframe of the present invention;

[0023] FIG. 6 is a schematic diagram of the adapter structure of the present invention;

[0024] FIG. 7 is a schematic diagram of the structure of the lateral arm of the present invention.

[0025] Reference numbers: 11—wheelset and bearing; 12—side frame; 13—wheelset radial device; 14—bolster; 21—existing subframe; 22—existing connecting rod; 23—existing connector; 21′—subframe; 22′—connecting rod; 23′—connector; 24′—mounting groove; 31—adapter; 311—adapter surface; 312—adapter connecting arm; 313—adapter connecting hole; 314—adapter locking hole; 32—lateral arm; 321—lateral arm flange; 322—lateral arm bolt; 323—lateral arm connecting hole; 33—rivet assembly.

DETAILED DESCRIPTION

[0026] The present invention is further described below in combination with specific embodiments which further illustrate principles of the present invention and do not limit the present invention in any way. The same or similar technologies as the present invention are not beyond the protection scope of the present invention.

[0027] Refer to the figures.

[0028] As shown in the figure, the underneath type railway freight car bogie wheelset radial device 13 of the present invention has front and rear subframes 21′ and two cross-arranged connecting rods 22′ that are pinned by round pin connectors 23′. The subframe 21′ is a combination structure of the adapter 31 and the lateral arm 32; the connecting rods 22′ are arranged under the bolster 14 to form the underneath bogie wheelset radial structure; the height of the central plane of the connecting rod 22′ is lower than the height of the central plane of the subframe adapter 31 surface.

[0029] The adapter 31 has an adapter surface 311 forming an arc-shaped adapter structure and an adapter connecting arm integrated with the adapter surface 311 structure and vertically arranged at one end of the adapter surface 311; the adapter connecting arm 312 is provided with multiple groups of adapter connecting holes 313 and an adapter locking hole 314 located at the center; a vertically structured lateral arm flange 321 is assembled and welded at the end of the lateral arm 32, and the lateral arm flange 321 is provided with multiple groups of lateral arm connecting holes 313 corresponding to the adapter connecting holes 323 and a lateral arm bolt 322 located at the center; the subframe 21′ is formed by fixing the connecting holes 313 of the adapter and the connecting holes 323 of the lateral arm with the rivet assembly 33, and locking the lateral arm bolt 322 passing through the locking hole 323 of the adapter with the lock pin.

[0030] the adapter connecting holes 313 and the lateral arm connecting holes 323 are provided in three groups and arranged in a triangle. The adapter connecting arm 312 at one end of the adapter 31 has a box-shaped section with sufficient strength and rigidity.

[0031] The wheelset radial device 13 of the present invention does not cross other parts of the bogie in terms of spatial structure and has a sufficient safety distance.

[0032] The connecting rods 22′ are cross-arranged, and the ends are embedded in the mounting grooves 24′ of the subframe 21′ and connected by round pin connectors 23′; A rigid bushing or an elastic hinge can be provided at each end of the connecting rods 22′; There is a small gap between the round pin connectors 23′ and the subframes 21′ and the connecting rods 22′ and a rotational degree of freedom around the axis of the round pins.

[0033] The present invention makes sufficient use of the lower space of the bogie by arranging the wheelset radial device 13 under the side frame, the bolster 14 and the foundation brake, which avoids the structural intersection of the wheelset radial device 13 and other parts of the bogie, reduces the design difficulty of the bolster 14, facilitates the arrangement of the foundation brake, and improves the versatility of the bogie.

[0034] As shown in FIGS. 3, 4 and 5, the underneath type railway freight car bogie wheelset radial device 13 of the present invention is composed of front and rear subframes 21′ and two cross-arranged connecting rods 22′ that are pinned by round pin connectors 23′. the subframe 21′ is a combination structure of the adapter 31 and the lateral arm 32. There is a larger vertical span between the center of the adapter surface of the adapter 31 of the subframe 21′ and the center plane of the connecting rods 22′; the connecting rods 22′ are arranged under the bolster 14.

[0035] The wheelset radial device 13 does not cross other parts of the bogie in terms of spatial structure and has a sufficient safety distance.

[0036] The flange is provided at the connection part of the adapter 31 and the lateral arm 32, and is longitudinally connected by the high-strength rivet assembly 33; one end of the adapter 31 has a box-shaped section with sufficient strength and rigidity.

[0037] The connecting rods 22′ are cross-arranged, and the ends are embedded in the mounting grooves 24′ of the subframe 21′ and connected by round pin connectors 23′. A rigid bushing or an elastic hinge can be provided at each end of the connecting rods 22′; There is a small gap between the round pin connectors 23′ and the subframes 21′ and the connecting rods 22′ and a rotational degree of freedom around the axis of the round pins 23′.

[0038] FIG. 1 shows the structure of a general railway freight car subframe radial bogie, which is mainly composed of wheelset and bearing 11, side frame 12, wheel set radial device 13, bolster 14 and other components.

[0039] FIG. 2 shows the structure of a general wheelset radial device 13, which is mainly composed of two subframes 21 and two connecting rods 22 that are pinned by round pin connectors 23. A rotational degree of freedom must be reserved during connection.