CN2475762Y

CN2475762Y - Anti-theft cover for manhole

Info

Publication number: CN2475762Y
Application number: CN 01216514
Authority: CN
Inventors: 于文放
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-21
Filing date: 2001-02-21
Publication date: 2002-02-06
Anticipated expiration: 2011-02-21

Abstract

The utility model relates to a guard against well lid for inspection well, which are mainly used for inspection well in underground pipeline such as sewage pipe, water supply pipe, telecommunication pipe, thermal pipe etc., rainwater grid and other facilities needing well lip. The main structure of the utility model is that a cylindric structure is added to the inner or outer lateral wall of the well lid base, and a cylindrical structure on which a pin column is arranged is provided at the same position of the well lid. After closing the well lid, the cylindrical structure on the well lid is just inserted to the cylindric structure on the base, and then the pin column is inserted. Therefore, the cylindrical structure can not pull out form the cylindric structure, which performs the function of guard against.

Description

The manhole anti-stealing manhole cover

The utility model manhole anti-stealing manhole cover is mainly used in the well lid of manhole of underground utilities such as sewage, tap water, post and telecommunications, heating power and rain grid made and other need add the facility of well lid.

Now the manhole well lid that uses does not fuse because of well lid and well lid base, there is not antitheft effect, a lot of well lids are lost, traffic and personal injury accident often take place in remaining uncovered manhole, have a strong impact on city management and people's living safety, also cause simultaneously the damage of underground installation, make ownership unit suffer the tremendous economic loss.

The purpose of this utility model provides a kind of new structure well lid, and it can make well lid and well lid base fuse, and open and close is convenient, reaches antitheft purpose.

Structure of the present utility model be on the inside wall of well lid base or lateral wall, add one columnar structured, its axis is vertical with the well lid plane, and upper and lower two parts internal diameter difference, forms a step in cylinder.Same position adds a cylindrical structural vertical with the well lid face on well lid, when well lid covers after on the well lid base, in columnar structured on the lucky fill-in well cover base of the cylindrical structural on the well lid.A pin-and-hole is bored on cylindrical structural top at well lid, and with fixing in the pin insertion pin-and-hole, the length of pin should be greater than the internal diameter of the columnar structured the first half of well lid base, and less than the internal diameter of the latter half, well lid just can not be extracted in the columnar structured tube of well lid base like this, but antitheft purpose is played in the activity of energy easy on and off.Columnar structured diameter on cylindrical structural on the well lid and the well lid base can be determined according to the whole size of well lid, if the well lid volume is little, in light weight, columnar structured the latter half of cancelling on the base is only stayed the first half, and its height can be determined according to well lid weight.

Columnar structured on cylindrical structural on the utility model well lid and the well lid base only needs that time processing is shaped in the founding casting of well lid and base, and be very simple and convenient.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the sectional drawing of anti-stealing manhole cover after well lid is closed that the utility model proposes.Fig. 2 is the sectional drawing of anti-stealing manhole cover after well lid is opened that the utility model proposes.Fig. 1, Fig. 2 are that to be added in well lid base inside wall with columnar structured (3) on the well lid base be that example is illustrated, if it is identical to be added on the well lid chassis outer side wall its principle.

Describe structure of the present utility model in detail below in conjunction with Fig. 1, Fig. 2.

Fig. 1 is the well lid closed condition.Well lid among Fig. 1 (1) is an one with cylindrical structural (2), and columnar structured (3) are one with well lid base (4).The latter half internal diameter of columnar structured (3) is greater than the first half internal diameter, in the tube of columnar structured (3), form a step, between cylindrical structural (2) and columnar structured (3) the first half enough big gap is arranged, make it open the back well lid and can freedom reach 360 degree rotations up and down.Pin (5) only could insert under the well lid closed condition in the pin-and-hole and be fixed together with cylindrical structural (2).The length of pin (5) greater than columnar structured (3) the first half internal diameter less than the latter half internal diameter.

Well lid is opened the back as Fig. 2, and well lid is upwards carried when free to rotate, the well lid turn away, and manhole is opened.The pin (5) on cylindrical structural on the well lid (2) top is blocked by the step in columnar structured (3) hole on the well lid base (4), makes well lid can not extract the disengaging base, and pin (5) be the weldering or riveting in pin-and-hole, can not take off easily, play antitheft effect.

Claims

1, is applied to manhole anti-stealing manhole cover on the facility that various manholes, rain grid made and other need add well lid, it is characterized in that on well lid base (4) inside wall or lateral wall, adding one columnar structured (3), its axis is vertical with the well lid plane, and two parts internal diameter difference up and down, the first half internal diameter is less than the latter half internal diameter, forms a platform valency in tube; Go up same position at well lid (1) and add a cylindrical structural vertical (2) with the well lid face, when well lid (1) covers after well lid base (4) is gone up, the cylindrical structural on the well lid (2) just in time columnar structured (3) on the fill-in well cover base (4) tin in; Between the first half of columnar structured (3) enough big gap is arranged on cylindrical structural on the well lid (2) and the well lid base; Bore a pin-and-hole on well lid cylindrical structural (2) top, and with fixing in a pin (5) the insertion pin-and-hole, the length of pin (5) should be greater than the internal diameter of columnar structured on the well lid base (3) the first half less than the internal diameter of the latter half.

2, manhole anti-stealing manhole cover according to claim 1, it is characterized in that columnar structured (3) on well lid base (4) inside wall or the lateral wall, hour can cancel the latter half when the well lid volume, only stay the first half, its height can be determined according to well lid weight.