Railway pre-embedded sleeve
A casing, pre-embedded technology, applied in the direction of roads, tracks, buildings, etc., can solve the problem that the bolts cannot be installed again, enter, and affect the use of the fastener system.
Pending Publication Date: 2019-06-21
ZHEJIANG TIANTAI XIANGHE IND CO LTD
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Problems solved by technology
[0003] Although all indicators meet the requirements during installation, during the long-term service process, due to the repeated action of the wheel-rail force, gaps appear between the threaded contact surfaces of the bolts and the embedded casing, and fine particles such as dust and sand It will enter the embedded casing along the gap
[0004] In order to avoid splashing of mud, the lower end of the embedded casing is often sealed, so the dust and sand that enters cannot be discharged, which seriously affects the use of the fastener system
[0005] What's more serious is that the bolts will be removed during the maintenance of the railway fastener system. Even if there is no gap between the thread contact surface of the bolt and the embedded casing, when the bolt is pulled out, the Sewage and fine quicksand between the holes will also enter the embedded casing, making it impossible for the bolts to be installed again
Method used
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[0022] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment, see Figure 1-3 :
[0023] A railway pre-embedded bushing, comprising a bushing main body 1, the inner wall of the bushing main body 1 is provided with an internal thread 2 matching with a spiral spike, and the outer wall is provided with an external thread 3 matching with a concrete sleeper, the bushing The lower end of the main body 1 is connected with a debris removal pipe 4, and two relative mounting holes are arranged in the center on the side wall of the debris removal pipe 4, and a rotating pin 5 is arranged for rotation in the mounting hole, and a plurality of belts are fixed on the rotating pin 5. The runner 7 of the vane 6, when the runner 7 rotates, the vane 6 is in contact with the inner wall of the debris removal pipe 4, and the runner 7 can rotate automatically. Of course, due to the influence of machining accuracy, the vane 6 and the d...
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The invention relates to the technical field of railway accessories, and particularly to a railway pre-embedded sleeve. The railway pre-embedded sleeve comprises a main sleeve body; internal threads matched with a spiral spike is arranged on the internal wall of the main sleeve body; outer threads matched with a concrete sleeper is arranged on the outer wall; the lower end of the main sleeve bodyis connected with a impurity-removing tube; two opposite installation holes are formed in the middle of a side wall of the impurity-removing tube; the installation holes are internally and rotatably provided with a rotating pin; the rotating pin is fixedly provided with a rotating wheel provided with a plurality of blades; when the rotating wheel rotates, the blades come in contact with the internal wall of the impurity-removing tube; the rotating wheel can rotate all by itself; when the rotating wheel rotates, at least two blades are in contact with a spherical cambered surface all the time so as to seal the impurity-removing tube. The railway pre-embedded sleeve provided by the invention can enable impurities entering the pre-embedded sleeve to be discharged, and preventing slurry on thebottom from being splattered in.
Description
technical field [0001] The invention belongs to the technical field of railway fittings, in particular to a railway pre-embedded casing. Background technique [0002] As one of the important components of the track structure, the fastener system not only has a large number of laying, high technical content, but also a long development cycle, which requires continuous research and development and improvement. The bolts used in the fastener system serve the purpose of fastening the spring bars through the friction between the bolts and the threaded contact surface of the embedded casing. [0003] Although all indicators meet the requirements during installation, during the long-term service process, due to the repeated action of the wheel-rail force, gaps appear between the threaded contact surfaces of the bolts and the embedded casing, and fine particles such as dust and sand It will enter the embedded casing along the gap. [0004] In order to avoid splashing of mud, the l...
Claims
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Inventor 杨君平范淑贞汤梦瑶余杰倩陈米娜朱世岳齐伟王敏龙陈亦欣
Owner ZHEJIANG TIANTAI XIANGHE IND CO LTD