CN2515250Y

CN2515250Y - Theft-proof manhole cover and special-purpose opening tool

Info

Publication number: CN2515250Y
Application number: CN 01272778
Authority: CN
Inventors: 童焘
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-12
Filing date: 2001-12-12
Publication date: 2002-10-09
Anticipated expiration: 2011-12-12

Abstract

The utility model relates to a natural burglarproof inspection well cover and an opening tool which is specially used for the natural burglarproof inspection well cover, and comprises a cover body and a base body which comprises an upside annular ring and a downside base ring. The inner wall of the upside annular ring is a taper which is slightly closed in from top to bottom, the inner diameter of the inner wall of the downside base ring is less than that of a floor mouth of the upside annular ring, and steps are formed between the upside annular ring and the downside base ring. The cover body comprises an upside solid disc body and a downside annular ring, and the upper end surface of the downside annular ring is naturally connected with the floor of the exterior margin of the disc body to form an integrated body. The outer wall of the downside annular ring is connected with the outer wall of the upside disc body, and the two outer walls are tapers which are coincided with the taper of the inner wall of the upside annular ring which is arranged on the base, and are interstitially engaged. The opening tool for the burglarproof inspection well cover comprises a lead screw, a thread cap, and an operating lever. The thread cap is spirally connected on the lead screw, supports which are distributed in a regular triangle are connected with the outer wall of the thread cap, the lower end of the lead screw is thread-connected with a moveable cap and is located through a combined cap, knuckles which are distributed in the regular triangle are connected with the outer wall of the moveable cap, and opening holes which are distributed in the regular triangle and are corresponding to the knuckles are correspondingly arranged on the surface of the upside disc body of the cover body.

Description

Nature anti-stealing manhole cover and special opening instrument thereof

Technical field

The utility model relates to a kind of natural anti-stealing manhole cover.

Background technology

On the existing road employed inspection shaft be stamped stolen easily, crash when make a sound, drawback such as upset easily, drive a vehicle to the pedestrian and to bring hidden danger.

Summary of the invention

The purpose of this utility model is exactly in order to address the above problem, and good natural anti-stealing manhole cover of a kind of theftproof performance and functional performance and special opening instrument thereof are provided.

Technical solution of the present utility model:

A kind of natural anti-stealing manhole cover, it includes lid and pedestal, it is characterized in that pedestal is made up of epimere annular ring and hypomere base ring one, epimere annular ring inwall is the taper of slightly closing up from the top down, hypomere base ring inwall internal diameter should make to form a step between epimere annular ring and the hypomere base ring less than the end mouth internal diameter of epimere annular ring; Lid is made up of epimere filled circles plate body and hypomere annular ring, the external edge of hypomere annular ring upper surface and plectane bottom surface connects as one naturally, and external wall of epimere plectane and continuous hypomere annular ring outer wall thereof are the taper that matches with the taper of pedestal epimere annular ring inwall, matched in clearance between them.

A kind of natural anti-stealing manhole cover special opening instrument, it is characterized in that it is made up of screw mandrel, silk cap and action bars, silk cap spiral is connected on the screw mandrel, silk cap outer wall is connected with the support that equilateral triangle distributes, screw mandrel lower end screw thread is connected with moveable cap and passes through and the cap location, the moveable cap outer wall is connected with the hook that equilateral triangle distributes, correspondingly have in lid epimere plectane surface be that equilateral triangle distributes and with the corresponding open hole of hook.

The utility model inspection shaft lid, at above drawback, on anti-theft measure, do not adopt lock, bolt, chain, ways such as hinge, and well lid and well seat contact surface are designed to taper, and well lid and well seat are had preferably to coincide, because well lid and well seat contact surface are tapered, certainly lead to tension force after stressed, this tension force is very unfavorable to the well seat again, in order to address this problem, between " lid " and " seat ", leave the gap, to adjust the size of tension force, make it antitheftly to have improved again the bearing capacity of inspection shaft integral body, guaranteed traffic safety, it is particularly suitable in high speed, use on the advanced road that overweight vehicle travels, also be suitable for urban water supply and sewerage, coal gas, heating power, power telecommunication, use the access of engineerings such as fire-fighting.The utlity model has antitheft, the no sound of nature, open convenient, be convenient to maintenance, advantage such as with low cost.

Description of drawings

Fig. 1 is the decomposition texture schematic diagram of the utility model lid and pedestal.

Fig. 2 is the upward view of lid among Fig. 1.

Fig. 3 is the vertical view of pedestal among Fig. 1.

Fig. 4 is the utility model top surface and open hole schematic diagram thereof.

Fig. 5 is the structural representation of the utility model special opening instrument.

The specific embodiment

As Fig. 1-5, inspection shaft lid of the present utility model includes lid 1 and pedestal 2, characteristics of the present utility model are, pedestal 2 is made up of epimere annular ring 3 and hypomere base ring 4 one, epimere annular ring 3 inwalls are the taper of slightly closing up from the top down, hypomere base ring 4 inwall internal diameters should make to form a step 5 between epimere annular ring 3 and the hypomere base ring 4 less than the end mouth internal diameter of epimere annular ring 3; Lid 1 is made up of epimere filled circles plate body 6 and hypomere annular ring 7, hypomere annular ring 7 upper surfaces and plectane body 6 outer rim bottom surfaces connect as one naturally, and epimere plectane body 6 outer walls and continuous hypomere annular ring 7 outer walls thereof are the taper that matches with the 3 inwall tapers of pedestal 2 epimere annular rings, matched in clearance between them.

In the utility model, the inwall internal diameter of pedestal 2 hypomere base rings 4 preferably is slightly less than 3 end of its epimere annular ring mouth internal diameter.

In lid 1 and pedestal 2, the taper tapering of epimere plectane body 6 outer walls and continuous hypomere annular ring 7 outer walls thereof and the taper tapering of pedestal 2 epimere annular rings 3 inwalls are the 3-7 degree.

After lid 1 of the present utility model is positioned on the pedestal 2, should leave the spacing of 1-3mm between step 5 upper surfaces of its hypomere annular ring 7 perisporium bottom surfaces and pedestal 2.Be provided with " well " font reinforcing rib 8 at lid 1 inwall, the muscle rib base of " well " font reinforcing rib 8 is an arc, and arch camber compares f=1/10.The epimere plectane body 6 of lid 1 and the overall height of hypomere annular ring 7 thereof are controlled at 60-80mm.

Inspection shaft lid special opening instrument of the present utility model is made up of screw mandrel 9, silk cap 10 and action bars 11, silk cap 10 spirals are connected on the screw mandrel 9, silk cap 10 outer walls are connected with the support 12 that equilateral triangle distributes, screw mandrel 9 lower end screw threads are connected with moveable cap 13 and pass through and cap 14 location, moveable cap 13 outer walls are connected with the hook 15 that equilateral triangle distributes, correspondingly have on lid 1 epimere plectane body 6 surfaces be that equilateral triangle distributes and with hook 15 corresponding open holes 16.

In the special opening instrument of the present utility model, silk cap 10 outer walls can be with being connected of support 12 and are articulated and connected, so that receive the installation site that special tool is regulated in superimposition.Being connected also to can be of moveable cap 13 outer walls and hook 15 is articulated and connected, and regulates the operating position so that receive superimposition.

When the utility model used, lid 1 just in time coincide and snaps in the pedestal 2, utilizes the tapering between them to be fastened togather naturally, and burglar's inconvenience is pried open.Because step 5 upper surfaces of lid 1 hypomere annular ring, 7 bottom surfaces and pedestal 2 leave and only leave the gap of 1-3mm, and lid 1 highly is 60-80mm, so guarantee between lid 1 and the pedestal 2 certain frictional resistance is arranged on the one hand, can guarantee that pedestal 2 is difficult for being risen splitting simultaneously again.During staff's opening cover 1, only need to be easy to open with special tool, during use, with support 12 triangular support ground around inspection shaft, three hooks 15 on the moveable cap 13 are stretched in three open holes 16 on lid 1 surface, the rotary manipulation bar 11 then, just by moving up of screw mandrel 9 lid 1 opened.

Claims

1, a kind of natural anti-stealing manhole cover, it includes lid and pedestal, it is characterized in that pedestal is made up of epimere annular ring and hypomere base ring one, epimere annular ring inwall is the taper of slightly closing up from the top down, hypomere base ring inwall internal diameter should make to form a step between epimere annular ring and the hypomere base ring less than the end mouth internal diameter of epimere annular ring; Lid is made up of epimere filled circles plate body and hypomere annular ring, the external edge of hypomere annular ring upper surface and plectane bottom surface connects as one naturally, and external wall of epimere plectane and continuous hypomere annular ring outer wall thereof are the taper that matches with the taper of pedestal epimere annular ring inwall, matched in clearance between them.

2, by the described natural anti-stealing manhole cover of claim 1, the inwall internal diameter that it is characterized in that described pedestal hypomere base ring is slightly less than mouth internal diameter at the bottom of its epimere annular ring.

3,, it is characterized in that in lid and pedestal the taper tapering of external wall of epimere plectane and continuous hypomere annular ring outer wall thereof and the taper tapering of pedestal epimere annular ring inwall are the 3-7 degree by the described natural anti-stealing manhole cover of claim 1.

4,, it is characterized in that to leave between the step upper surface of described lid hypomere annular ring perisporium bottom surface and pedestal the spacing of 1-3mm by the described natural anti-stealing manhole cover of claim 1.

5, by the described natural anti-stealing manhole cover of claim 1, it is characterized in that being provided with " well " font reinforcing rib at the lid inwall, the muscle rib base of " well " font reinforcing rib is an arc.

6, by the described natural anti-stealing manhole cover of claim 1, it is characterized in that the epimere plectane body of lid and the overall height of hypomere annular ring thereof are controlled at 60-80mm.

7, a kind of natural anti-stealing manhole cover special opening instrument, it is characterized in that it is made up of screw mandrel, silk cap and action bars, silk cap spiral is connected on the screw mandrel, silk cap outer wall is connected with the support that equilateral triangle distributes, screw mandrel lower end screw thread is connected with moveable cap and passes through and the cap location, the moveable cap outer wall is connected with the hook that equilateral triangle distributes, correspondingly have in lid epimere plectane surface be that equilateral triangle distributes and with the corresponding open hole of hook.

8, by the described natural anti-stealing manhole cover special opening instrument of claim 7, it is characterized in that a cap outer wall and being connected to of support are articulated and connected, the moveable cap outer wall is connected also for being articulated and connected with hook.