CN117508259B - Rail transit vehicle magnetic track brake suspension device - Google Patents
Rail transit vehicle magnetic track brake suspension device Download PDFInfo
- Publication number
- CN117508259B CN117508259B CN202311806210.5A CN202311806210A CN117508259B CN 117508259 B CN117508259 B CN 117508259B CN 202311806210 A CN202311806210 A CN 202311806210A CN 117508259 B CN117508259 B CN 117508259B
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- Prior art keywords
- spring
- base
- locking
- hole
- adjusting screw
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- 239000000725 suspension Substances 0.000 title claims abstract description 50
- 210000003205 muscle Anatomy 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/02—Scotch blocks, skids, or like track-engaging shoes
- B61H7/04—Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
- B61H7/06—Skids
- B61H7/08—Skids electromagnetically operated
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a rail brake suspension device for a rail transit vehicle, which comprises a spring upper base, an adjusting screw, a locking wedge block, a limiting block and a locking bolt, wherein the spring upper base is sleeved with a suspension spring, a spring lower base, an adjusting nut and the locking nut, the spring lower base is fixedly connected with a magnetic rail support, the upper end part of the adjusting screw is in threaded connection with the spring upper base, a through hole is formed in the middle of the adjusting screw, a limiting groove is formed at the upper end part of the through hole, the limiting block is arranged in the limiting groove, the locking wedge block is arranged in the limiting block, and the upper end of the locking bolt penetrates through a connecting sleeve and is in threaded connection with the locking wedge block. The invention adopts the structure that the upper spring base is matched with the adjusting nut and the locking nut, so that the pre-tightening spring force is adjustable after the magnetic rail brake suspension spring is installed; the structure of the locking bolt, the locking wedge block and the limiting block is adopted, so that the major quality hidden trouble that the head of the adjusting screw cannot be effectively spread and the locking cannot be tightened is eliminated.
Description
Technical Field
The invention belongs to the technical field of magnetic track brakes of rail transit vehicles, and particularly relates to a magnetic track brake suspension device of a rail transit vehicle.
Background
The magnetic rail brake is a new type of brake developed to adapt to the popularization and high speed of rail vehicles, and mainly relies on the attraction of magnets and rails to generate sliding friction force so as to slow down the vehicles. The magnetic rail brake is connected with the vehicle bogie by virtue of the suspension device, and when no brake is applied, the suspension device ensures that the pole shoes keep a certain distance from the surface of the steel rail, so that the magnetic rail brake is prevented from colliding or rubbing with the rail during normal operation of the vehicle; when the brake is applied, the suspension device ensures that the magnetic rail brake has the degree of freedom of fitting to the surface of the steel rail.
In the prior art, chinese patent ZL201410752731.1 discloses a rail transit vehicle electromagnetic track brake linkage, and this linkage mainly includes: the magnetic rail brake is characterized by comprising a suspension spring, an adjusting screw, a suspension screw sleeve and the like, wherein a spring suspension mode is adopted, when a brake is applied, the electromagnetic attraction of the magnetic rail brake is required to overcome the compression force of the spring to be adsorbed on the surface of a steel rail, and when a release is applied, the magnetic rail brake is powered off, and the spring force is stored through the suspension spring to release the return. The locking of the adjusting screw is realized by tightening the locking bolt and the locking wedge to prop open the head of the adjusting screw. However, the pre-tightening height of the suspension spring in the electromagnetic track brake suspension device cannot be adjusted after installation, namely the spring force cannot be adjusted, when the magnetic track brake does not apply braking, the suspension spring cannot reliably and effectively reset and separate from the track surface, and the vehicle collides or rubs with the track during normal running; simultaneously, locking voussoir, locking bolt, adjusting screw head are because of rust-resistant fat liquoring, and locking bolt often rotates together with locking voussoir in actual regulation, and then can not reliably prop the adjusting screw head open and realize locking to lead to the whole whereabouts of magnetic track brake, serious to driving safety impact, the hidden quality trouble is great.
Therefore, in view of the above situation, the present inventors have conducted experience and practice in related industries for many years to provide a rail transit vehicle magnetic brake suspension device, which overcomes the technical drawbacks of the prior art and solves the hidden quality problems.
Disclosure of Invention
The invention aims to provide a rail transit vehicle magnetic track brake suspension device to solve the problems in the background art.
The invention provides a rail brake suspension device for a rail transit vehicle, which comprises a sprung base, an adjusting screw, a locking wedge, a limiting block and a locking bolt, wherein the sprung base comprises a base top plate and a base screw with the upper part connected with the base top plate, a middle threaded hole is formed in the lower part of the base screw, a suspension spring, an unsprung base, an adjusting nut and a locking nut are sleeved on the sprung base from top to bottom in sequence, the suspension spring is positioned between the base top plate and the unsprung base, the suspension spring and the unsprung base are in clearance fit with the base screw, and the unsprung base is fixedly connected with a magnetic rail bracket; the adjusting nut and the locking nut are in threaded connection with the upper spring base; the upper end of the adjusting screw is in threaded connection with the middle threaded hole, a through hole is formed in the middle of the adjusting screw, a limiting groove is formed in the upper end of the through hole, and two positioning openings are formed in the side wall of the limiting groove; the limiting block comprises a connecting sleeve and two limiting convex ribs positioned at two sides of the connecting sleeve, the limiting block is arranged in the limiting groove, and the two limiting convex ribs are correspondingly embedded in the two positioning openings; the locking wedge block is in a truncated cone shape, two parallel side wall surfaces are arranged on two radial sides of the locking wedge block, the locking wedge block is arranged in the limiting block, and the two parallel side wall surfaces are respectively in parallel clearance fit with the two limiting convex ribs; the locking bolt is arranged in the through hole, the upper end of the locking bolt penetrates through the connecting sleeve and is in threaded connection with the locking wedge block, and the lower end of the adjusting screw is fixedly connected with the magnetic track brake through the hanging tray and the spherical gasket.
Further, the two limit ribs are symmetrically arranged on two radial sides of the connecting sleeve, the lower surfaces of the two limit ribs are flush with the bottom surface of the connecting sleeve, and the upper surfaces of the two limit ribs are higher than the upper surface of the connecting sleeve so as to form a space for accommodating the locking wedge block between the two limit ribs; and the two limit ribs and the connecting sleeve are integrally formed.
Further, the opposite surfaces of the two limiting convex ribs are planes which are vertically arranged in parallel.
Further, a pin hole is formed in the upper end of the locking bolt, and a cotter pin is arranged in the pin hole; the upper end of the locking bolt penetrates through the locking wedge block, and the cotter pin is located above the locking wedge block.
Further, the hanging tray is in clearance fit with the adjusting screw rod, and the hanging tray is fixedly connected with the mounting hole of the magnetic track brake.
Further, a retainer ring for a shaft for preventing the locking bolt from moving up and down is arranged in the through hole and below the locking bolt, an annular groove matched with the retainer ring for the shaft is formed in the side wall surface of the through hole, the retainer ring for the shaft is embedded in the annular groove, and the upper surface of the retainer ring for the shaft is attached to the lower end surface of the locking bolt.
Compared with the prior art, the invention has the following beneficial effects:
(1) The magnetic track brake suspension device adopts the structure that the upper spring base is matched with the adjusting nut and the locking nut, so that the pre-tightening spring force of the magnetic track brake suspension spring can be adjusted after the magnetic track brake suspension spring is installed, and the technical defect that the pre-tightening spring force of the suspension spring cannot be adjusted in the prior art is overcome. The spring force of the adjusting nut can meet the actual working condition requirement of the magnetic track brake by adjusting the position of the adjusting nut, and the adjusting nut is tightly locked by the locking nut, so that the locking nut is loose.
(2) The magnetic track brake suspension device adopts the structure that the locking bolt is matched with the locking wedge block and the limiting block to solve the quality risk that the locking bolt and the locking wedge block rotate together, thereby eliminating the serious quality hidden trouble that the head of the adjusting screw cannot be effectively spread and the head of the adjusting screw cannot be screwed down to prevent loosening, and solving the problem of driving safety.
(3) The magnetic rail brake suspension device is reasonable in combination and arrangement, does not need special installation tools, and is simpler, more convenient and quicker to assemble and adjust.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The invention will be described in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
FIG. 1 is a perspective cross-sectional view of one embodiment of a rail transit vehicle magnetic brake suspension device of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the rail brake suspension of FIG. 1;
FIG. 3 is a schematic perspective view of a locking wedge of the present invention;
FIG. 4 is a schematic perspective view of a stopper according to the present invention;
FIG. 5 is a schematic perspective view of an adjusting screw in the present invention;
the device comprises a 1-sprung base, a 2-suspension spring, a 3-unsprung base, a 5-adjusting nut, a 6-locking nut, a 7-adjusting screw, a 7 a-limiting groove, a 7 b-positioning opening, a 7 c-through hole, an 8-suspension tray, a 10-spherical gasket, a 11-cotter pin, a 12-locking wedge block, a 12.1-side wall surface, a 13-limiting block, a 13.1-connecting sleeve, a 13.2-limiting convex rib, a 13.3-convex rib inner surface, a 14-locking bolt and a 15-shaft retainer ring.
Detailed Description
The present invention will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the invention, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present invention by those skilled in the art.
Referring to fig. 1 to 5, an embodiment of the present invention provides a rail transit vehicle magnetic brake suspension device, which comprises a sprung base 1, a suspension spring 2, an unsprung base 3, an adjusting nut 5, a locking nut 6, an adjusting screw 7, a suspension tray 8, a spherical spacer 10, a locking wedge 12, a limiting block 13 and a locking bolt 14; the specific structure is as follows:
the spring upper base 1 comprises a base top plate and a base screw rod, wherein the upper part of the base screw rod is connected with the base top plate, the upper part of the base screw rod is in a step shape, external threads are arranged on the outer side of the lower part of the base screw rod, and a middle threaded hole is formed in the middle of the lower part of the base screw rod. The suspension spring 2, the spring lower base 3, the adjusting nut 5 and the locking nut 6 are sleeved on the spring upper base 1 in sequence from top to bottom, the suspension spring 2 is positioned between the base top plate and the spring lower base 3, the suspension spring 2 and the spring lower base 3 are in clearance fit with base screw rods, and the spring lower base 3 is in interference fit with the mounting hole of the magnetic track bracket 4; the adjusting nut 5 and the locking nut 6 are in threaded connection with the sprung base 1. The adjusting nut 5 axially moves on the spring upper base 1 to adjust the pre-tightening spring force of the suspension spring 2 to enable the pre-tightening spring force to meet the actual working condition requirement of the magnetic track brake, and the locking nut 6 is tightly locked with the adjusting nut 5 to enable the pre-tightening spring force to be loose-proof; the internal thread of the magnetic rail brake is screwed with the adjusting screw rod 7, and the adjusting screw rod 7 moves axially on the spring upper base 1 to adjust the height of the magnetic rail brake 9 from the rail surface.
The upper end of the adjusting screw rod 7 is in threaded connection with the middle threaded hole, a through hole 7c is formed in the middle of the adjusting screw rod 7, a horn-shaped limit groove 7a is formed in the upper end of the through hole, and two positioning openings 7b are formed in the side wall of the limit groove 7 a; the limiting block 13 comprises a connecting sleeve 13.1 and two limiting ribs 13.2 positioned on two sides of the connecting sleeve, opposite surfaces of the two limiting ribs 13.2 are planes which are vertically arranged in parallel, the two limiting ribs 13.2 and the connecting sleeve 13.1 are integrally formed and nested at the bottom of the limiting groove 7a, and the two limiting ribs 13.2 are respectively correspondingly embedded in the two positioning openings 7 b. The locking wedge block 12 is in a truncated cone shape with a large upper part and a small lower part, two parallel side wall surfaces 12.1 are arranged on two radial sides, the locking wedge block 12 is arranged in the limiting block 13, the two parallel side wall surfaces 12.1 are parallel to corresponding planes of the two limiting convex ribs 13.2, and a gap exists between the planes. The locking bolt 14 is arranged in the through hole, the upper end of the locking bolt penetrates through the connecting sleeve and is in threaded connection with the locking wedge block 12, and the lower end of the adjusting screw 7 is fixedly connected with the magnetic track brake 9 through the hanging tray 8 and the spherical gasket 10. In this structural arrangement, two spacing protruding muscle 13.2 symmetry set up in the radial both sides of adapter sleeve 13.1, and the lower surface of two spacing protruding muscle 13.2 flushes with the bottom surface of adapter sleeve 13.1, and the upper surface of two spacing protruding muscle 13.2 is higher than the upper surface of adapter sleeve 13.1 to form the space that is used for holding locking voussoir 12 between two spacing protruding muscle 13.2. Preferably, the shape of the inner wall surface 13.3 of the protruding rib of the limiting protruding rib is matched with the shape of the vertical plane of the locking wedge block 12. The hanging tray 8 is in clearance fit with the adjusting screw 7, and the hanging tray 8 is fixedly connected with a mounting hole of the magnetic track brake 9. When the lower part of the adjusting screw 7 is fixed, the locking bolt 14 is screwed down, the locking wedge block 12 can only move downwards axially due to the limit block 13 limiting the circumferential rotation of the locking screw, and then the head of the adjusting screw 7 is spread so as to realize the screwing down and loosening prevention of the adjusting screw 7 and the upper spring base 1.
In a specific embodiment, the upper end of the locking bolt 14 is provided with a pin hole, and a cotter pin 11 is arranged in the pin hole; the upper end of the lock bolt 14 is disposed through the lock wedge 12, and the cotter pin 11 is located above the lock wedge 12.
In a specific embodiment, a retainer ring 15 for a shaft for preventing the lock bolt from moving up and down is provided in the through hole below the lock bolt 14, an annular groove adapted to the retainer ring 15 for a shaft is provided in a side wall surface of the through hole, the retainer ring 15 for a shaft is fitted in the annular groove, and an upper surface of the retainer ring 15 for a shaft is attached to a lower end surface of the lock bolt 14.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The rail brake suspension device for the rail transit vehicle is characterized by comprising a spring upper base (1), an adjusting screw (7), a locking wedge block (12), a limiting block (13) and a locking bolt (14), wherein the spring upper base (1) comprises a base top plate and a base screw with the upper part connected with the base top plate, a middle threaded hole is formed in the lower part of the base screw, a suspension spring (2), a spring lower base (3), an adjusting nut (5) and a locking nut (6) are sequentially sleeved on the spring upper base (1) from top to bottom, the suspension spring (2) is positioned between the base top plate and the spring lower base (3), the suspension spring (2) and the spring lower base (3) are in clearance fit with the base screw, and the spring lower base (3) is fixedly connected with a magnetic rail support (4); the adjusting nut (5) and the locking nut (6) are in threaded connection with the upper spring base (1); the upper end of the adjusting screw (7) is in threaded connection with the middle threaded hole, a through hole is formed in the middle of the adjusting screw (7), a limit groove (7 a) is formed in the upper end of the through hole, and two positioning openings (7 b) are formed in the side wall of the limit groove (7 a); the limiting block (13) comprises a connecting sleeve (13.1) and two limiting ribs (13.2) positioned on two sides of the connecting sleeve, the limiting block (13) is arranged in the limiting groove (7 a), and the two limiting ribs (13.2) are respectively embedded in the two positioning openings (7 b) correspondingly; the locking wedge block (12) is in a circular truncated cone shape, two parallel side wall surfaces (12.1) are arranged on two radial sides of the locking wedge block, the locking wedge block (12) is arranged in the limiting block (13), and the two parallel side wall surfaces (12.1) are respectively in parallel clearance fit with the two limiting ribs (13.2); the locking bolt (14) is arranged in the through hole, the upper end of the locking bolt penetrates through the connecting sleeve and is in threaded connection with the locking wedge block (12), and the lower end of the adjusting screw (7) is fixedly connected with the magnetic track brake (9) through the hanging tray (8) and the spherical gasket (10).
2. Brake suspension device according to claim 1, characterized in that two of the limit ribs (13.2) are symmetrically arranged on both radial sides of the connecting sleeve (13.1), the lower surfaces of the two limit ribs (13.2) are flush with the bottom surface of the connecting sleeve (13.1), and the upper surfaces of the two limit ribs (13.2) are higher than the upper surface of the connecting sleeve (13.1) so as to form a space for accommodating the locking wedge (12) between the two limit ribs (13.2); the two limit ribs (13.2) and the connecting sleeve (13.1) are integrally formed.
3. Brake suspension device according to claim 2, characterized in that the opposite faces of the two limit ribs (13.2) are vertically parallel arranged planes.
4. Brake suspension device according to claim 1, characterized in that the locking bolt (14) is provided with a pin hole at its upper end, in which pin hole a cotter pin (11) is arranged; the upper end of the locking bolt (14) penetrates through the locking wedge block (12), and the cotter pin (11) is located above the locking wedge block (12).
5. Brake suspension arrangement according to claim 1, characterized in that the suspension tray (8) is in clearance fit with the adjusting screw (7), the suspension tray (8) being fixedly connected with the mounting hole of the magnetic rail brake (9).
6. The brake suspension device according to claim 1, wherein a shaft retainer ring (15) for preventing the lock bolt from moving up and down is provided in the through hole below the lock bolt (14), an annular groove adapted to the shaft retainer ring (15) is provided in a side wall surface of the through hole, the shaft retainer ring (15) is fitted in the annular groove, and an upper surface of the shaft retainer ring (15) is fitted to a lower end surface of the lock bolt (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311806210.5A CN117508259B (en) | 2023-12-26 | 2023-12-26 | Rail transit vehicle magnetic track brake suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311806210.5A CN117508259B (en) | 2023-12-26 | 2023-12-26 | Rail transit vehicle magnetic track brake suspension device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117508259A CN117508259A (en) | 2024-02-06 |
| CN117508259B true CN117508259B (en) | 2024-04-16 |
Family
ID=89762920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311806210.5A Active CN117508259B (en) | 2023-12-26 | 2023-12-26 | Rail transit vehicle magnetic track brake suspension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117508259B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29618468U1 (en) * | 1996-10-23 | 1998-02-26 | Hanning & Kahl GmbH & Co., 33813 Oerlinghausen | Elastic suspension for magnetic rail brakes |
| TWM249883U (en) * | 2003-12-04 | 2004-11-11 | Chung Shan Inst Of Science | Braking device for magnetic rail |
| CN102431571A (en) * | 2011-10-24 | 2012-05-02 | 南车株洲电力机车有限公司 | Connecting device of magnetic track brake and magnetic track brake apparatus |
| CN102627113A (en) * | 2012-03-15 | 2012-08-08 | 常州庞丰机电科技有限公司 | Suspension device for electromagnetic track brake for light rail vehicle |
| CN103991459A (en) * | 2012-03-15 | 2014-08-20 | 常州庞丰机电科技有限公司 | Suspension device of light rail vehicle electromagnetic track brake |
| CN203974843U (en) * | 2014-05-27 | 2014-12-03 | 南车株洲电力机车有限公司 | A kind of city rail vehicle magnetic rail brake device and suspension gear thereof |
| CN209972454U (en) * | 2019-03-13 | 2020-01-21 | 嘉兴市钧萍轨道交通科技有限公司 | Magnetic track brake and suspension device thereof |
| WO2020083804A1 (en) * | 2018-10-22 | 2020-04-30 | Knorr-Bremse Gesellschaft Mit Beschränkter Haftung | Suspension device for a magnetic rail brake, magnetic rail brake device, rail vehicle and method for changing a position |
-
2023
- 2023-12-26 CN CN202311806210.5A patent/CN117508259B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29618468U1 (en) * | 1996-10-23 | 1998-02-26 | Hanning & Kahl GmbH & Co., 33813 Oerlinghausen | Elastic suspension for magnetic rail brakes |
| TWM249883U (en) * | 2003-12-04 | 2004-11-11 | Chung Shan Inst Of Science | Braking device for magnetic rail |
| CN102431571A (en) * | 2011-10-24 | 2012-05-02 | 南车株洲电力机车有限公司 | Connecting device of magnetic track brake and magnetic track brake apparatus |
| CN102627113A (en) * | 2012-03-15 | 2012-08-08 | 常州庞丰机电科技有限公司 | Suspension device for electromagnetic track brake for light rail vehicle |
| CN103991459A (en) * | 2012-03-15 | 2014-08-20 | 常州庞丰机电科技有限公司 | Suspension device of light rail vehicle electromagnetic track brake |
| CN203974843U (en) * | 2014-05-27 | 2014-12-03 | 南车株洲电力机车有限公司 | A kind of city rail vehicle magnetic rail brake device and suspension gear thereof |
| WO2020083804A1 (en) * | 2018-10-22 | 2020-04-30 | Knorr-Bremse Gesellschaft Mit Beschränkter Haftung | Suspension device for a magnetic rail brake, magnetic rail brake device, rail vehicle and method for changing a position |
| CN209972454U (en) * | 2019-03-13 | 2020-01-21 | 嘉兴市钧萍轨道交通科技有限公司 | Magnetic track brake and suspension device thereof |
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| Publication number | Publication date |
|---|---|
| CN117508259A (en) | 2024-02-06 |
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