Manhole cover and its pulling device and using method
A well cover and cover plate technology, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as complex structures, and achieve the effect of satisfying self-locking conditions, easy self-locking conditions, and extensive practical value
Inactive Publication Date: 2015-09-30
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
The structure of this technical scheme is complicated, and it cannot solve the problem of "anti-rust and death" of the manhole cover
Method used
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[0028] The present invention will be further described below in conjunction with accompanying drawing:
[0029] combine figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , a well cover of the present invention, comprising a well cover body 1, and a straight wall blind hole 4 is opened on the well cover body 1; since there is a straight wall blind hole 4 on the well cover body 1, other instruments have no stress points, and it is difficult to extract the well cover. It can only be extracted with a special pulling device, so the anti-theft effect is very obvious. Straight wall blind hole 4 is provided with cover plate 3, and cover plate 3 is connected with well cover body 1 by hinge 2; Under normal circumstances, straight wall blind hole 4 is covered, thereby does not affect normal pedestrian, the safety of driving.
[0030] The pulling device of the well cover includes a first side plate 5, a second side plate 6, a first connecting rod 7, and a second co...
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The invention discloses a well lid, a lifting device of the well lid and a use method of the well lid. The well lid comprises a well lid body and the lifting device of the well lid, wherein a straight wall blind hole is formed in the well lid body, the lifting device of the well lid comprises a first side plate, a second side plate, a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are hinged to the first side plate and the second side plate respectively, and the first side plate, the second side plate, the first connecting rod and the second connecting rod form a parallel four-bar linkage. When the parallel four-bar linkage is in a rectangular shape, the distance between the outer side of the first side plate and the outer side of the second side plate is larger than the diameter of the straight wall blind hole, and when the parallel four-bar linkage is inserted into the straight wall blind hole, an inclined angle alpha is formed between the first connecting rod and the horizontal line, wherein alpha is smaller than or equal to the friction angle beta between the first side plate and the well lid body and the friction angle beta between the second side plate and the well lid body, beta equals to arctanf, and f is the friction coefficient between the first side plate and the well lid body and the friction coefficient between the second side plate and the well lid body. The well lid is quite obvious in anti-theft effect, the anti-rust problem of the well lid is effectively solved, and the well lid and the lifting device are simple in structure, low in cost and convenient to use and have great practical value.
Description
technical field [0001] The invention relates to a well cover, a pulling device and a using method thereof. Background technique [0002] Manhole covers play a very important role in our daily life. They are an important part of the urban sewer system and widely appear in every corner of the city, such as communities and roads. At present, roads in cities and towns need to lay various pipelines such as water, electricity, and communication underground, and most of the wellheads used for observation or maintenance of underground pipelines are manhole covers made of cast iron materials. It has a certain recovery value, and the current anti-theft measures for manhole covers are not perfect, so the manhole covers are very easy to be stolen, ranging from filling the lack of manhole covers to causing national property losses, and most importantly due to the traps formed in the road after the manhole covers are stolen In addition, because the well cover is stolen, it is easy to cau...
Claims
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IPC IPC(8): E02D29/14B25B27/00
Inventor 朱增宝郑祥徐迎莉郭莉
Owner ANHUI UNIV OF SCI & TECH