Triangular nodular cast iron inspection well cover
A technology of ductile iron and manhole cover, which is applied in the field of manhole cover, can solve the problems of inconvenient opening, unfavorable urban environmental protection, high noise, etc., and achieve the effect of convenient closing and excellent anti-theft function
Inactive Publication Date: 2019-07-26
朱健飞
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Problems solved by technology
[0002] Existing manhole covers for municipal or power supply facilities, etc., generally have a rectangular or circular outer frame and cover, and the cover vibrates greatly and makes noise during use, which is not conducive to urban environmental protection
Chinese patent CN 205421347 U discloses a triangular nodular cast iron manhole cover, which is composed of a plurality of right-angled triangle covers, which can overcome the above-mentioned main shortcomings of conventional manhole covers, but it is inconvenient to open and easy to be stolen
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[0011] A triangular ductile iron manhole cover, comprising a ductile iron rectangular outer frame 1, a ductile iron cover is placed in the rectangular outer frame, and the cover is composed of a plurality of right-angled triangular covers 2; ear protrusions 3 are provided at the three vertices of each right-angled triangular cover , the outer frame is provided with a groove matching the ear protrusion, the pin shaft 4 is arranged on the inner wall of the groove, and the pin hole 5 matched with the pin shaft is arranged on the ear protrusion, so that the ear protrusion can rotate around the pin shaft; Among the three right-angled triangle covers, two adjacent right-angled triangle covers are respectively arranged, and the front piece is provided with a protrusion 6, and the back piece is covered on the protrusion, and the last piece is provided with a lockset 7 cooperating with the rectangular outer frame to lock, so that in the lock After being tightly locked, other right-angle...
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The invention discloses a triangular nodular cast iron inspection well cover. The triangular nodular cast iron inspection well cover comprises a nodular cast iron rectangular outer frame, a nodular cast iron cover is mounted in the rectangular outer frame, and the cover is formed by combining a plurality of right triangle covers; lug protrusions are arranged at three top points of each right triangle cover, grooves matched with the lug protrusions are formed in the outer frame, pin shafts are arranged on the inner walls of the grooves, pin holes matched with the pin shafts are formed in the lug protrusions, so that lug protrusions are enabled to rotate around the pin shafts; and in the right triangle covers forming the cover, protruding blocks are arranged on the front right triangle coverof the every adjacent right triangle covers, the rear right triangle cover covers the protruding blocks, and a lockset matched with the rectangular outer frame is arranged on the final right trianglecover. The triangular nodular cast iron inspection well cover is convenient to turn over and close, is ingenious in locking, and has an excellent anti-theft function.
Description
technical field [0001] The invention relates to a manhole cover. Background technique [0002] Existing manhole covers for municipal or power supply facilities, etc., generally have a rectangular or circular outer frame and a cover, and the cover vibrates greatly during use, and the noise is large, which is not conducive to urban environmental protection. Chinese patent CN 205421347 U discloses a triangular nodular cast iron manhole cover, which is composed of a plurality of right-angled triangle covers, which can overcome the above-mentioned main shortcomings of conventional manhole covers, but it is inconvenient to open and easy to be stolen. Contents of the invention [0003] The object of the present invention is to provide a triangular nodular cast iron manhole cover which is convenient to open and close, cleverly locked and has an anti-theft function. [0004] Technical solution of the present invention is: [0005] A triangular ductile iron manhole cover, comprisi...
Claims
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IPC IPC(8): E02D29/14
CPCE02D29/14E02D29/1427E02D29/1481
Inventor 朱健飞朱金峰曹阳龚灯才陆振辉
Owner 朱健飞