Title:
BOLTLESS FASTENER SYSTEM FOR HEAVY-HAUL RAILWAYS
Document Type and Number:
WIPO Patent Application WO/2022/126535
Kind Code:
A1
Abstract:
A boltless fastener system for heavy-haul railways, comprising a concrete sleeper (1). The top surface of the concrete sleeper (1) is provided with two concrete shoulders (2); a rail bearing recess (12) is formed between the two concrete shoulders (2); first iron bases (3) are pre-buried on the inner sides of the concrete shoulders (2); one surface of the upper part of each first iron base (3) is abutted against the surface of the concrete shoulder (2) facing the inner side; the main part of the abutting surface of the upper part of each first iron base (3) against the concrete shoulder (2) is an inclined surface (9); the concrete shoulders (2) correspondingly form matching slopes (13) at positions where the concrete shoulders (2) abut against the inclined surfaces (9) of the first iron bases (3); the slopes (13) and the inclined surfaces (9) are cast together; arc-shaped elastic strips (6) are installed on the first iron bases (3); gauge blocks (7) are provided on the inner sides of the first iron bases; the gauge blocks (7) are fastened by means of the arc-shaped elastic strips (6); and the gauge blocks (7) can be fastened on rail body of a steel rail (8) located in the rail bearing recess (12), or can be fastened on an iron pad (15) at the bottom of the steel rail (8). The boltless fastener system is especially suitable for use in heavy-haul railways having a large axle load of 40 tons or more.
Inventors:
FENG YI (CN)
LEI JIE (CN)
SHI QINGFENG (CN)
WU GUANGZE (CN)
YUAN BAOJUN (CN)
LEI JIE (CN)
SHI QINGFENG (CN)
WU GUANGZE (CN)
YUAN BAOJUN (CN)
Application Number:
PCT/CN2020/137325
Publication Date:
June 23, 2022
Filing Date:
December 17, 2020
Export Citation:
Assignee:
CHINA RAILWAY BAOJI BRIDGE GROUP CO LTD (CN)
International Classes:
E01B9/30; E01B9/28; E01B9/62; E01B9/68
Foreign References:
| CN111501429A | 2020-08-07 | |||
| CN207159714U | 2018-03-30 | |||
| CN203938937U | 2014-11-12 | |||
| CN108625234A | 2018-10-09 | |||
| CN201232141Y | 2009-05-06 | |||
| JP2010013903A | 2010-01-21 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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