CN216833676U - Combined brake beam of railway wagon - Google Patents
Combined brake beam of railway wagon Download PDFInfo
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- CN216833676U CN216833676U CN202122829593.0U CN202122829593U CN216833676U CN 216833676 U CN216833676 U CN 216833676U CN 202122829593 U CN202122829593 U CN 202122829593U CN 216833676 U CN216833676 U CN 216833676U
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- shaped groove
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Abstract
The utility model discloses a combined brake beam of a railway wagon, which comprises a brake beam frame consisting of a stay bar, a brake beam end and an arched bar, a brake head and a strut, wherein the brake head is arranged on the brake beam frame; the end part sliding block at the end of the brake beam is provided with an arc-shaped groove, the annular roller is pushed into the arc-shaped groove from the arc-shaped opening of the arc-shaped groove, the positioning pin penetrates through a middle hole of the annular roller until the annular roller is installed on the end part sliding block, the positioning pin and the arc-shaped groove are coaxially arranged, and the annular roller rotates around the positioning pin in the arc-shaped groove. The annular roller is arranged in the end sliding block, the plane contact friction between the end head of the brake beam and the sliding groove wearing plate is converted into the rolling of the brake beam roller in the sliding groove, the blocking fault of the end head of the brake beam in the sliding groove when the brake beam is not parallel to the axle is reduced, and meanwhile, compared with the traditional brake beam, the axial gap between the annular roller and the side frame sliding groove wearing plate can be reduced, so that the function of limiting the displacement of the brake beam in the axial direction of the wheel pair is realized, and the transitional wear of the wheel rim is improved.
Description
Technical Field
The utility model relates to the technical field of parts of a railway wagon brake system, in particular to a railway wagon combined brake beam.
Background
The brake beam is an important component of a basic brake device of a railway wagon bogie, and directly and uniformly transmits the brake force amplified by a brake dry system to a brake shoe, so that the brake shoe and a wheel generate a friction braking effect. The brake beam of railway freight car in China mainly has slotted steel arch brake beam L-A, L-B and L-C type combined brake beam. Chinese patents CN1O1092144A, CN201116128Y and CN2038872U disclose three related structures of "brake beam". The brake beam has the main characteristics that: 1) the manufacturing process of the brake beam frame is complex, the brake beam frame is an integrally forged and integrally hot-rolled combined brake beam, the brake beam frame is mainly formed by hot rolling, the control requirements on the heating temperature and the cooling speed are very high, the brake beam of the shrink fit press-fitting process requires high processing precision, and the shrink fit press-fitting equipment is complex and has large assembly workload, so the production cost is high due to the limitations; 2) the brake beam support columns are double-hole support columns with grooves in the middle, the edges of the grooves are easy to crack, the length and the size of the grooves of the support columns have large influence on the strength of the support columns and the space required by the rotation of the brake lever, and particularly the brake beam of a vehicle with narrow gauge; 3) the end of the brake beam is of a prismatic section, so that the brake beam is beneficial to relieving the brake shoe and the wheel after braking, but the blocking of the end of the brake beam in the side frame sliding groove under the state is easy to relieve, and the braking efficiency is reduced.
Disclosure of Invention
The utility model aims to provide the combined brake beam of the railway wagon, which can limit the position in the axial direction, reduce the abrasion of the wheel rim and improve the braking efficiency aiming at the defects of the technology.
In order to achieve the purpose, the combined brake beam of the railway wagon comprises a brake beam frame consisting of stay bars, brake beam ends arranged at two ends of the stay bars and an arched bar, and brake shoe supports arranged on the ends of each brake beam, wherein one end of the arched bar is arranged on one brake beam end, the other end of the arched bar is arranged on the other brake beam end, and a strut is supported between the middle part of each stay bar and the bending part of the arched bar; the end part sliding block at the end of the brake beam is provided with an arc-shaped groove, the annular roller is pushed into the arc-shaped groove from the arc-shaped opening of the arc-shaped groove, the positioning pin penetrates through a middle hole of the annular roller until the annular roller is installed on the end part sliding block, the positioning pin and the arc-shaped groove are coaxially arranged, and the annular roller rotates around the positioning pin in the arc-shaped groove.
Furthermore, the axial clearance L2 between the annular roller and a chute wearing plate arranged in the side frame chute is 2-8 mm, and the clearance L1 between the annular roller and the chute wearing plate is smaller than the clearance C between the brake shoe and the wheel rim.
Further, the section of the end sliding block at the end of the brake beam is rectangular.
Further, the depth direction of the arc-shaped groove is consistent with the thickness direction of the end sliding block, and the arc-shaped opening of the arc-shaped groove is outward and communicated with the outside.
Furthermore, the end sliding block sleeve is provided with a sliding block abrasion sleeve.
Furthermore, the strut is of a single-plate structure, a connecting hole is formed in the middle of the strut, arc-shaped grooves are formed in two ends of the strut, and a wear-resistant bushing is pressed in the connecting hole; the stay bar is clamped in the arc-shaped groove at one end of the strut and is connected with the strut through the pressing plate and the bolt; and the arc-shaped groove at the other end of the strut is tightly pressed in the bending arc area in the middle of the arched rod.
Furthermore, a horizontal connecting end of the end head of the brake beam is provided with a horizontal cylindrical hole, an inclined cylindrical hole is formed in an inclined connecting end of the end head of the brake beam, and an included angle formed by the axis of the horizontal connecting hole and the axis of the inclined cylindrical hole is 20-33 degrees.
Furthermore, the end part of the support rod comprises a circular table part and a cylindrical part arranged on the small end face of the circular table part, the diameter of the cylindrical part is consistent with that of the small end face of the circular table part, the cylindrical part is pressed in the horizontal cylindrical hole, and the conical surface of the circular table part and the orifice end face of the horizontal cylindrical hole are welded in a ring mode and then ground flat.
Furthermore, the hole wall of the inclined cylindrical hole is perpendicular to the plane direction of the brake beam frame, hole edge grooves are formed in the upper side and the lower side of the inclined cylindrical hole, the end portion of the bow-shaped rod is closely attached to the inclined cylindrical hole inserted into the end of the brake beam, the distance between the end face of the bow-shaped rod and the inner end face of the hole edge groove is 2-3 times that of the hole wall of the inclined cylindrical hole, and the outer edge face of the bow-shaped rod is welded with the hole edge grooves.
Compared with the prior art, the utility model has the following advantages: the annular roller is arranged in the end part sliding block at the end of the brake beam, the plane contact friction between the end of the brake beam and the sliding groove wearing plate is converted into the rolling of the brake beam roller in the sliding groove, the blocking fault of the end of the brake beam in the sliding groove when the brake beam is not parallel to an axle is reduced, and meanwhile, compared with the traditional brake beam, the axial clearance between the annular roller and the side frame sliding groove wearing plate can be reduced, so that the function of limiting the displacement of the brake beam in the axial direction of a wheel pair is realized, and the transitional wear of the wheel rim is improved.
Drawings
FIG. 1 is a schematic structural view of a railway freight car combined brake beam of the present invention;
FIG. 2 is a schematic view of a brake beam head mounting arrangement of FIG. 1;
FIG. 3 is a schematic view of the assembly of FIG. 2 with the sideframe;
FIG. 4 is a schematic view of the toroidal roller configuration of FIG. 2;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic view of the strut structure of FIG. 1;
FIG. 7 is a schematic view of the end construction of the brake beam of FIG. 1;
FIG. 8 is a schematic view of the assembly of the brake beam ends with the strut and the bow;
fig. 9 is a schematic view of the end of the stay of fig. 8.
Wherein: the brake shoe comprises a brake shoe support 1, a brake beam end 2, a stay bar 3, a bow bar 4, a strut 5, a pressure plate 6, an annular roller 7, a positioning pin 8, a slide block wear sleeve 9, an end slide block 10, a side frame 11, an arc groove 12, a slide groove wear plate 13, a brake shoe 14, a wheel rim 15, a connecting hole 16, an arc groove 17, a horizontal cylindrical hole 18, an inclined cylindrical hole 19, a hole edge groove 20, a cylindrical part 21 and a circular table part 22.
Detailed Description
The utility model is described in further detail below with reference to the figures and the specific embodiments.
The combined brake beam of the railway wagon as shown in figure 1 comprises a brake beam frame consisting of a stay bar 3, brake beam ends 2 and a bow-shaped bar 4 which are arranged at two ends of the stay bar 3, and a brake head 1 arranged on each brake beam end 2, wherein one end of the bow-shaped bar 4 is arranged on one brake beam end 2, the other end of the bow-shaped bar 4 is arranged on the other brake beam end 2, and a strut 5 is supported between the middle part of the stay bar 3 and the bending part of the bow-shaped bar 4.
As shown in fig. 2, 3, 4, and 5, a cross section of an end slider 10 of the brake beam end 2 is rectangular, an arc-shaped groove 12 is formed in the end slider 10, a depth direction of the arc-shaped groove 12 is consistent with a thickness direction of the end slider 10, an arc opening of the arc-shaped groove 12 faces outward and is communicated with the outside, the annular roller 7 is pushed into the arc-shaped groove 12 from the arc opening of the arc-shaped groove 12, the positioning pin 8 penetrates through a middle hole of the annular roller 7 until the annular roller is mounted on the end slider 10, the positioning pin 8 is coaxially arranged with the arc-shaped groove 10, and the annular roller 7 rotates around the positioning pin 8 in the arc-shaped groove 10; meanwhile, the axial clearance L2 between the annular roller 7 and a chute wearing plate 13 arranged in a chute of the side frame 11 is 2-8 mm, and the clearance L1 between the annular roller 7 and the chute wearing plate 13 is smaller than the clearance C between the brake shoe 14 and the wheel rim 15. When the brake beam is axially deviated to one side, the annular roller 7 is in contact with the chute wear plate 13, the side surface of the brake shoe 14 is not in contact with the wheel rim 15 to generate wear, and the annular roller 7 rotates around the positioning pin 8 in the end part sliding block 10, so that when the brake is relieved, even if the annular roller 7 is in contact with the chute wear plate 13, rolling friction is generated, jamming cannot occur, the limit function of the brake beam is realized, the wear of the wheel rim 15 is reduced, and the brake efficiency is improved.
In this embodiment, the end slider 10 is sleeved with the slider wearing sleeve 9, and the positioning pin 8 also has the function of positioning the slider wearing sleeve 9. The edges of the upper and lower end surfaces of the annular roller 7 are arc guide surfaces.
Referring to fig. 6, the pillar 5 is a single plate structure, a connecting hole 16 is formed in the middle of the pillar 5, and arc grooves 17 are formed in both ends of the pillar 5. A wear-resistant bushing is pressed in the connecting hole 16; the support rod 3 is a hollow cylindrical rod, and the support rod 3 is clamped in an arc-shaped groove 17 at one end of the strut 5 and is connected with the strut 5 through a pressing plate 6 and a bolt; bow-shaped pole 4 is bent for round steel stick middle part and forms, and the other end arc recess 17 of pillar 5 compresses tightly in bow-shaped pole middle part circular arc region of bending. The strut 5 can be formed by integral forging or by welding two ends with arc grooves and a middle strut body.
As shown in fig. 7, 8 and 9, the horizontal connecting end of the brake beam tip 2 is provided with a horizontal cylindrical hole 18, the inclined connecting end of the brake beam tip 2 is provided with an inclined cylindrical hole 19, and an included angle formed by the axis of the horizontal connecting hole 18 and the axis of the inclined cylindrical hole 19 is 20-33 °. The end part of the support rod comprises a circular table part 22 and a cylindrical part 21 arranged on the small end face of the circular table part 22, the diameter of the cylindrical part 21 is consistent with that of the small end face of the circular table part 22, the cylindrical part 21 is pressed in the horizontal cylindrical hole 18, and the conical surface of the circular table part 22 and the orifice end face of the horizontal cylindrical hole 18 are welded in a ring mode and then ground flat, so that the connection reliability is improved.
The hole wall of the inclined cylindrical hole 19 is perpendicular to the plane direction of the brake beam frame, hole edge grooves 20 are formed in the upper side and the lower side of the inclined cylindrical hole 19, the end portion of the bow-shaped rod 4 is closely attached and inserted into the inclined cylindrical hole 19 of the end 2 of the brake beam, the distance between the end face of the bow-shaped rod 4 and the inner end face of each hole edge groove 20 is 2-3 times of the wall thickness of the inclined cylindrical hole 19, and the outer edge face of the bow-shaped rod 4 is welded with the hole edge grooves 20, so that the connection reliability is improved.
The cross section of the sliding block at the end of the brake beam is of a rectangular structure, the low-head eccentric wear of a brake shoe can be reduced, the annular roller is arranged in the sliding block at the end, the plane contact friction between the end of the brake beam and a sliding groove wearing plate is converted into the rolling of the brake beam roller in the sliding groove, the blocking fault of the end of the brake beam in the sliding groove when the brake beam is not parallel to an axle is reduced, and meanwhile, compared with the traditional brake beam, the axial clearance between the annular roller and the side frame sliding groove wearing plate can be reduced, so that the function of limiting the displacement of the brake beam in the axial direction of a wheel pair is realized, and the transitional wear of the wheel rim is improved. The brake beam support adopts a single web plate type design, can reduce the manufacturing difficulty, is suitable for brake beams of vehicles with different track gauges, and can meet the use requirements of the vehicles with the track gauges of 914-1676 mm and the wheel diameters of 711-1000 mm.
Claims (9)
1. A combined brake beam of a railway wagon comprises a brake beam frame consisting of stay bars (3), brake beam ends (2) and bow-shaped rods (4), wherein the brake beam frame is installed at two ends of each stay bar (3), a brake shoe holder (1) is installed on each brake beam end (2), one end of each bow-shaped rod (4) is installed on one brake beam end (2), the other end of each bow-shaped rod (4) is installed on the other brake beam end (2), and a strut (5) is supported between the middle part of each stay bar (3) and the bending part of each bow-shaped rod (4); the method is characterized in that: an arc-shaped groove (12) is formed in an end sliding block (10) of the end (2) of the brake beam, the annular roller (7) is pushed into the arc-shaped groove (12) from an arc opening of the arc-shaped groove (12), the positioning pin (8) penetrates through a middle hole of the annular roller (7) until the annular roller is installed on the end sliding block (10), the positioning pin (8) and the arc-shaped groove (12) are coaxially arranged, and the annular roller (7) rotates in the arc-shaped groove (12) around the positioning pin (8).
2. A railway freight car composite brake beam as defined in claim 1, wherein: an axial clearance L2 between the annular roller (7) and a chute wearing plate (13) installed in a chute of the side frame (11) is 2-8 mm, and a clearance L1 between the annular roller (7) and the chute wearing plate (13) is smaller than a clearance C between the brake shoe (14) and a wheel rim (15).
3. A railway freight car composite brake beam as defined in claim 1, wherein: the section of the end sliding block (10) of the brake beam end (2) is rectangular.
4. A railway freight car composite brake beam as defined in claim 1, wherein: the depth direction of the arc-shaped groove (12) is consistent with the thickness direction of the end sliding block (10), and the arc-shaped opening of the arc-shaped groove (12) is outward and communicated with the outside.
5. A railway freight car composite brake beam as defined in claim 1, wherein: the end sliding block (10) is sleeved with a sliding block abrasion sleeve (9).
6. A railway freight car composite brake beam as defined in claim 1, wherein: the supporting column (5) is of a single-plate structure, a connecting hole (16) is formed in the middle of the supporting column (5), arc-shaped grooves (17) are formed in two ends of the supporting column (5), and a wear-resistant bushing is pressed in the connecting hole (16); the stay bar (3) is clamped in an arc-shaped groove (17) at one end of the strut (5) and is connected with the strut (5) through a pressing plate (6) and a bolt; and an arc-shaped groove (17) at the other end of the strut (5) is tightly pressed in a bending arc area in the middle of the arched rod.
7. A railway freight car composite brake beam as defined in claim 1, wherein: the horizontal connecting end of the brake beam end (2) is provided with a horizontal cylindrical hole (18), the inclined connecting end of the brake beam end (2) is provided with an inclined cylindrical hole (19), and an included angle formed by the axis of the horizontal cylindrical hole (18) and the axis of the inclined cylindrical hole (19) is 20-33 degrees.
8. A railway freight car combination brake beam as defined in claim 7, wherein: the end part of the support rod (3) comprises a circular table part (22) and a cylindrical part (21) arranged on the small end face of the circular table part (22), the diameter of the cylindrical part (21) is consistent with that of the small end face of the circular table part (22), the cylindrical part (21) is pressed in the horizontal cylindrical hole (18), and the conical surface of the circular table part (22) and the orifice end face of the horizontal cylindrical hole (18) are welded circularly for one circle and then are ground to be flat.
9. A railway freight car combination brake beam as defined in claim 7, wherein: hole wall perpendicular to braking roof beam structure plane direction of slope cylinder hole (19), hole limit recess (20) have been seted up to the upper and lower side of slope cylinder hole (19), bow-shaped pole (4) tip is close to paste and is inserted in slope cylinder hole (19) of braking roof beam end (2), the distance between the terminal surface of bow-shaped pole (4) and hole limit recess (20) the interior terminal surface is the hole wall thickness of slope cylinder hole (19) of 2 ~ 3 times, the outer fringe face and the welding of hole limit recess (20) of bow-shaped pole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829593.0U CN216833676U (en) | 2021-11-18 | 2021-11-18 | Combined brake beam of railway wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829593.0U CN216833676U (en) | 2021-11-18 | 2021-11-18 | Combined brake beam of railway wagon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216833676U true CN216833676U (en) | 2022-06-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122829593.0U Active CN216833676U (en) | 2021-11-18 | 2021-11-18 | Combined brake beam of railway wagon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216833676U (en) |
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2021
- 2021-11-18 CN CN202122829593.0U patent/CN216833676U/en active Active
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