Bogie and axle box suspension positioning device thereof
An axle box suspension positioning device for a railway vehicle is provided, which includes a guide column assembly. The guide column assembly includes a fixed end connected to a frame of the railway vehicle, and a free end which is extendable and retractable from an opening of the axle box. An elastic positioning component is provided in the opening, and the elastic positioning component limits a movement of the free end along a running direction of the vehicle with respect to the frame. The arrangement of the elastic positioning component enables the axle box suspension positioning device to have a large positioning rigidity. A bogie having the axle box suspension positioning device is also provided.
1. An axle box suspension positioning device for a railway vehicle, comprising a guide column assembly and an elastic positioner connected between the guide column assembly and an axle box of the railway vehicle, wherein the guide column assembly comprises a fixed end connected to a frame of the railway vehicle, and a free end which is extendable and retractable from an opening of the axle box, and an elastic positioning component located under the elastic positioner is provided in the opening, and the elastic positioning component limits a movement of the free end along a running direction of the vehicle with respect to the frame, wherein a predetermined gap is provided between the elastic positioning component and the guide column assembly, wherein the elastic positioning component comprises an elastic positioning block which has a hole in the center and is fixed with respect to the axle box, and the elastic positioning block is an elliptical plate with a minor axis being parallel to the running direction of the vehicle, an outer circumferential wall of the elastic positioning block abuts against an inner circumferential wall of the opening, and the predetermined gap is provided between an inner circumferential wall of the hole and the guide column assembly.
2. The axle box suspension positioning device according to claim 1 , wherein the elastic positioning block has a plurality of notches, and the notches are distributed at two sides of the running direction of the railway vehicle.
3. The axle box suspension positioning device according to claim 1 , wherein a wearing resistant component is provided between the elastic positioning component and the guide column assembly, and the wearing resistant component is fixedly connected to the elastic positioning component, and the predetermined gap is provided between the wearing resistant component and the guide column assembly.
4. The axle box suspension positioning device according to claim 3 , wherein the wearing resistant component comprises a wearing sleeve sleeved on the guide column assembly, and the predetermined gap is provided between an inner circumferential wall of the wearing sleeve and the guide column assembly, and an outer circumferential wall of the wearing sleeve is fixed to the elastic positioning component.
5. The axle box suspension positioning device according to claim 4 , wherein the wearing sleeve is in interference fitting with the elastic positioning component.
6. The axle box suspension positioning device according to claim 3 , wherein the elastic positioning block has an inner metal sleeve, an outer metal sleeve, and an elastic member located between and fixedly connected to the inner metal sleeve and the outer metal sleeve, and the inner metal sleeve is fixedly connected to the wearing resistant component, and the outer metal sleeve is fixed with respect to the axle box.
7. The axle box suspension positioning device according to claim 6 , wherein the outer metal sleeve comprises an outer sleeve portion abutting against an inner circumferential wall of the opening, and an outward flanging portion towards the outside of the opening and abutting against a bottom wall of the axle box, and the outer metal sleeve is detachably connected to the axle box via the outward flanging portion.
8. The axle box suspension positioning device according to claim 7 , further comprising a spring washer and a bolt, wherein the bolt is screwed into the elastic washer, the outward flanging portion, and the axle box in sequence as listed, and the elastic washer, the outward flanging portion, and the axle box are fastened.
9. The axle box suspension positioning device according to claim 3 , wherein the free end has a flanging, and when the guide column assembly is located at a top end of its stroke, the flanging is blocked by the elastic positioning component or the wearing resistant component.
10. A bogie, comprising a frame and an axle box, wherein the axle box suspension positioning device according to claim 1 is provided between the frame and the axle box.
11. The axle box suspension positioning device according to claim 4 , wherein the free end has a flanging, and when the guide column assembly is located at a top end of its stroke, the flanging is blocked by the elastic positioning component or the wearing resistant component.
12. The axle box suspension positioning device according to claim 5 , wherein the free end has a flanging, and when the guide column assembly is located at a top end of its stroke, the flanging is blocked by the elastic positioning component or the wearing resistant component.
13. The axle box suspension positioning device according to claim 6 , wherein the free end has a flanging, and when the guide column assembly is located at a top end of its stroke, the flanging is blocked by the elastic positioning component or the wearing resistant component.
14. The axle box suspension positioning device according to claim 7 , wherein the free end has a flanging, and when the guide column assembly is located at a top end of its stroke, the flanging is blocked by the elastic positioning component or the wearing resistant component.
15. The axle box suspension positioning device according to claim 8 , wherein the free end has a flanging, and when the guide column assembly is located at a top end of its stroke, the flanging is blocked by the elastic positioning component or the wearing resistant component.