Swing bolster, swing bolster vibration reduction assembly and bogie
The disclosure discloses a swing bolster, a swing bolster vibration reduction assembly and a bogie. The swing bolster includes a body, wherein a mounting cavity for mounting a friction block is formed in two ends of the body; the mounting cavity is provided with a first horizontal opening and a second horizontal opening, which are opposite to each other; and opening directions of the first horizontal opening and the second horizontal opening are perpendicular to an extending direction of the body. When the swing bolster in the disclosure is used, the friction block is mounted in the mounting cavity of the swing bolster body, and end parts of the friction block extend out of the first horizontal opening and second horizontal opening of the mounting cavity. The friction block is not matched with the swing bolster through sloped portions, and a movement direction of the swing bolster is perpendicular to a movement direction of the friction block relative to the swing bolster, so that wear of the friction block and the swing bolster is reduced, influence caused by the relative movement or wear of the swing bolster and the friction block to vibration reduction performance of the vertical elastic elements is prevented, a vibration reduction effect of the bogie in an unloaded state is ensured, and using reliability of the swing bolster is ensured.
1. A swing bolster vibration reduction assembly, comprising a swing bolster and a vibration reduction unit, wherein the swing bolster comprises a body ( 10 ), wherein a mounting cavity ( 11 ) for mounting a friction block ( 20 ) is formed in two ends of the body ( 10 ); the mounting cavity ( 11 ) is provided with a first horizontal opening ( 11 a ) and a second horizontal opening ( 11 b ), which are opposite to each other; and opening directions of the first horizontal opening ( 11 a ) and the second horizontal opening ( 11 b ) are perpendicular to an extending direction of the body ( 10 ); the body ( 10 ) of the swing bolster is provided with a first vertical hole ( 12 ), and the first vertical hole ( 12 ) is in communication with the mounting cavity ( 11 ); the vibration reduction unit comprises the friction block ( 20 ), a horizontal elastic element ( 30 ) and vertical elastic elements ( 40 ); the friction block ( 20 ) comprises:
a first friction block ( 21 ), the first friction block ( 21 ) being arranged in the mounting cavity ( 11 ) of the swing bolster, a first end of the first friction block ( 21 ) extending from the first horizontal opening ( 11 a ) of the mounting cavity ( 11 );
a second friction block ( 22 ), the second friction block ( 22 ) being arranged in the mounting cavity ( 11 ) of the swing bolster, the second friction block ( 22 ) being positioned in an extending direction of the first friction block ( 21 ), a first end of the second friction block ( 22 ) extending from the second horizontal opening ( 11 b ) of the mounting cavity ( 11 ), the horizontal elastic element ( 30 ) being arranged between the first friction block ( 21 ) and the second friction block ( 22 );
a middle wedge ( 23 ), the middle wedge ( 23 ) being arranged in the mounting cavity ( 11 ) of the swing bolster, the middle wedge ( 23 ) being positioned between the first friction block ( 21 ) and the second friction block ( 22 ), the middle wedge ( 23 ) being matched with the first friction block ( 21 ) and the second friction block ( 22 ) through sloped portions of the first friction block and the second friction block, a bottom end of the middle wedge ( 23 ) extending from the first vertical hole ( 12 ); and
wherein the vertical elastic elements ( 40 ) are arranged below the swing bolster, and at least one vertical elastic element ( 40 ) is positioned under the bottom end of the middle wedge ( 23 ) so that when the swing bolster presses down, the at least one vertical elastic element ( 40 ) positioned under the bottom end of the middle wedge ( 23 ) urges the middle wedge ( 23 ) upward in rigid contact the sloped portions of the first friction block ( 21 ) and the second friction block ( 22 ).
2. The swing bolster vibration reduction assembly according to claim 1 , wherein a diameter of the first vertical hole ( 12 ) is greater than a diameter of a second vertical hole ( 13 ).
3. The swing bolster vibration reduction assembly according to claim 1 , wherein the horizontal elastic element ( 30 ) comprises:
a first horizontal elastic element ( 31 ), the first horizontal elastic element ( 31 ) being arranged between the first friction block ( 21 ) and the middle wedge ( 23 ) in a pressing manner; and
a second horizontal elastic element ( 32 ), the second horizontal elastic element ( 32 ) being arranged between the second friction block ( 22 ) and the middle wedge ( 23 ) in a pressing manner.
4. The swing bolster vibration reduction assembly according to claim 3 , wherein
the first friction block ( 21 ) is provided with a first accommodation cavity ( 21 a ), an opening of the first accommodation cavity ( 21 a ) faces the second friction block ( 22 ), and at least a part of the first horizontal elastic element ( 31 ) is positioned in the first accommodation cavity ( 21 a ); and
the second friction block ( 22 ) is provided with a second accommodation cavity ( 22 a ), an opening of the second accommodation cavity ( 22 a ) faces the first friction block ( 21 ), and at least a part of the second horizontal elastic element ( 32 ) is positioned in the second accommodation cavity ( 22 a ).
5. The swing bolster vibration reduction assembly according to claim 1 , wherein the body ( 10 ) of the swing bolster is provided with a second vertical hole ( 13 ), the second vertical hole ( 13 ) is in communication with the mounting cavity ( 11 ), the second vertical hole ( 13 ) and the first vertical hole ( 12 ) are coaxially formed, and two ends of the middle wedge ( 23 ) are arranged in the first vertical hole ( 12 ) and the second vertical hole ( 13 ) in a sliding manner.
6. The swing bolster vibration reduction assembly according to claim 5 , wherein the vibration reduction unit further comprises:
a friction sleeve ( 50 ), the friction sleeve ( 50 ) being provided with a first hole for the middle wedge ( 23 ), the friction sleeve ( 50 ) being arranged at the second vertical hole ( 13 ), a top end of the middle wedge ( 23 ) being connected with the second vertical hole ( 13 ) of the swing bolster through the friction sleeve ( 50 ) in a sliding manner; and
a stopping sleeve ( 60 ), the stopping sleeve ( 60 ) being provided with a second hole for the middle wedge ( 23 ), the stopping sleeve ( 60 ) being arranged at the first vertical hole ( 12 ), the bottom end of the middle wedge ( 23 ) extending from the second hole of the stopping sleeve ( 60 ), the stopping sleeve ( 60 ) being provided with a flange ( 61 ) for stopping the middle wedge ( 23 ).
7. The swing bolster vibration reduction assembly according to claim 1 , wherein the vibration reduction unit further comprises two upright post wearing plates ( 70 ), the upright post wearing plates ( 70 ) are fixedly arranged, one upright post wearing plate ( 70 ) of the two upright post wearing plates ( 70 ) is pressed against the first end of the first friction block ( 21 ), and the other upright post wearing plate ( 70 ) of the two upright post wearing plates ( 70 ) is pressed against the first end of the second friction block ( 22 ).
8. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 1 .
9. The swing bolster vibration reduction assembly according to claim 1 , wherein
the first friction block ( 21 ) is provided with a first accommodation cavity ( 21 a ), an opening of the first accommodation cavity ( 21 a ) faces the second friction block ( 22 ), and at least a part of the first horizontal elastic element ( 31 ) is positioned in the first accommodation cavity ( 21 a ); and
the second friction block ( 22 ) is provided with a second accommodation cavity ( 22 a ), an opening of the second accommodation cavity ( 22 a ) faces the first friction block ( 21 ), and at least a part of the second horizontal elastic element ( 32 ) is positioned in the second accommodation cavity ( 22 a ).
10. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 3 .
11. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 1 .
12. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 4 .
13. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 5 .
14. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 6 .
15. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 7 .
16. A bogie, comprising a side frame ( 80 ) and a swing bolster vibration reduction assembly, wherein the swing bolster vibration reduction assembly is arranged on the side frame ( 80 ), and the swing bolster vibration reduction assembly is the swing bolster vibration reduction assembly according to claim 2 .