CN2737836Y

CN2737836Y - Antitheft manhole cover

Info

Publication number: CN2737836Y
Application number: CN 200420091992
Authority: CN
Inventors: 李建峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-27
Filing date: 2004-10-27
Publication date: 2005-11-02
Anticipated expiration: 2014-10-27

Abstract

The utility model relates to a manhole cover, in particular to an antitheft manhole cover, which is characterized in that a lock fixing hook which can be clamped inside of a manhole base along the bottom face is fixed on one end of the bottom face of the strut beam of the manhole cover. The other end of the bottom face of the strut beam is fixed with an antitheft lock which is mounted with a movable lock hook which can clamp the manhole base. By the fastening limitation of the movable lock hook and the fixing lock hook on the bottom face of both ends of the manhole base, the manhole cover can be fixed on the manhole base. Without a special opening device, the manhole cover can not be opened and stolen for implementing the anti-theft of the manhole cover. The utility model is safe and difficult to be stolen, and the theft of the manhole cover can be effectively restricted. Thus the theft case of the manhole cover can be greatly decreased and the safety of pedestrians and various vehicles can be guaranteed.

Description

A kind of Antitheft manhole cover

Technical field

The utility model relates to a kind of well head overcover, specifically a kind of Antitheft manhole cover.

Technical background

Be provided with many catch pits that communicate with sewer in the both sides, urban street, be fixed with well grate seat on the well head of catch pit, and hide the well grate.Because the aboveground well lid in common cellar for storing things has installed anti-theft device mostly additional, be difficult for stealing, at present so the burglar has just aimed at the well grate on the catch pit.And the network on the well grate makes common anti-theft device to install, and perhaps both made installation also can't play due antitheft effect, thereby the phenomenon that the well grate is lost is more and more serious, and casualties that causes thus and property loss are also more and more.Both influence the civilization construction in cities and towns, also be unfavorable for the healthy and stable development of society.

The utility model content

The purpose of this utility model just provides a kind of Antitheft manhole cover, to reduce losing of well grate, guarantees the pedestrian on the street and the safety of vehicular traffic.

The utility model is achieved in that soffit one end at the well grate is fixed with the fixed lock hook that may be stuck in bottom surface, convex edge in the well grate seat, and the other end in a soffit is fixed with theftproof lock, but the moveable lock hook of clamping well grate seat is housed on the theftproof lock.When laying this Antitheft manhole cover, use special opening device earlier, open theftproof lock, make the moveable lock hook retraction on it; Again well grate seat is aimed on one side of Antitheft manhole cover and put down, make one side of fixed lock hook elder generation dogging convex edge in well grate seat; After all fastening the well grate, use special opening device locking theftproof lock again, moveable lock hook is stretched out, be stuck in the bottom surface, interior convex edge of well grate seat another side.Like this, spacing by moveable lock hook and fixed lock hook at the fastening of bottom surface, well grate seat both sides, the well grate can be fixed on the well grate seat.Do not have special opening device, then can't open and steal the well grate, realized the antitheft of well grate thus.

The utility model is safe and reliable, is difficult for stealing, and has restricted arbitrarily taking of well grate effectively, thereby can significantly reduce the stolen incident of well grate, ensures the safety of pedestrian and various vehicles on the street, has promoted the development that Community health is stable and the civilization construction in cities and towns.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the backsight enlarged drawing of theftproof lock part among Fig. 1.

Fig. 3 be among Fig. 1 theftproof lock part look up enlarged drawing.

Fig. 4 is a theftproof lock opening schematic diagram.

Fig. 5 is the vertical view of the utility model outward appearance.

The specific embodiment

As shown in Figure 1, on well grate seat 1, be placed with well grate 3.Left end in strutbeam (referring to Fig. 5) bottom surface of well grate 3 is fixed with fixed lock hook 2, and dogging is in the bottom surface, interior convex edge on well grate seat 1 left side.The right-hand member that props up the soffit at the well grate is fixed with theftproof lock, and telescopic moveable lock hook 10 is arranged on the theftproof lock, but dogging is in the bottom surface, interior convex edge on well grate seat 1 the right.

The concrete structure of a kind of theftproof lock that the utility model provides is shown in Fig. 1,2,3,4, its structure is in the middle of two

slideways

4,9 that join with the well grate tooth bars 8 to be housed, tooth bar underrun holder 7, axle 13 and spring 14 are connected with protecting cover 5, and moveable lock hook 10 is connected on the front end of tooth bar 8.This theftproof lock can be controlled the motion and the position of moveable lock hook 10 by stirring the tooth bar 8 that is supported by two slideways.And the tooth section that has on the tooth bar 8 is blocked by protecting cover 5 fixing on tooth bar and that can pull, can stir tooth bar easily to prevent other people.As Fig. 2, shown in Figure 3, on one side the form of volume cover is made in the bottom surface of protecting cover 5, be set on the axle 13, axle 13 interts and is connected on two holders 7, and spring 14 is walked around axle 13, stretches tight and blocks the bottom surface of protecting cover 5, and what tooth bar 8 sides were protected on the edge-on edge on the protecting cover 5 has a tooth section.During operation, use special opening device, from the bar seam of well grate 3, press close to strutbeam and insert, pull controlling organization, the upright edge of protecting cover 5 is depressed, the tooth section that has on the tooth bar 8 is exposed, the gear in the special opening device promptly with tooth bar 8 on the engagement of tooth section arranged.Control gear rotates, and can realize moving back and forth of tooth bar 8, and the moveable lock hook 10 1 of tooth bar 8 front ends can move forward thereupon or bounce back.The closure or openness of theftproof lock have been realized thus.

For further improving the theftproof performance of this Antitheft manhole cover, on slideway 4, be connected with spacer 6 by axle 11 and spring 12, the lateral bending on the spacer is along in the stopper slot that is stuck on the tooth bar 8.This mechanism is equivalent to install additional an insurance institution on theftproof lock.Promptly, spacer 6 is played connection and elasticity position-limiting action by the axle 11 fixing on slideway 4 and the spring 12 of the card that stretches tight.And spacer 6 lateral bendings have then limited moving of tooth bar 8 along the clamping to the stopper slot on tooth bar 8 another sides.Have only this spacer 6 is pushed aside, make it the stopper slot (shown in Figure 4) on the tooth bar 8, ability mobile rack 8 is opened theftproof lock.

Be provided with turn edge (shown in Figure 1) at spacer 6 end faces.When opening theftproof lock with special opening device, when the edge-on edge on protecting cover 5 is depressed, there is a mechanism to cross out on the opening device, the top that turns edge on the spacer 6 to be pushed aside, the lateral bending that can make spacer 6 like this is along the stopper slot of deviating from the tooth bar 8.Turn edge being provided with on the spacer 6, be located between the end face of the bottom surface of well grate strutbeam and tooth bar 8, its objective is that in order to increase the unlatching difficulty of non-special tool the safety factor of theftproof lock is increased, and theftproof performance further strengthens.

Among Fig. 5, theftproof lock can be arranged on the bottom of one or two strutbeam of well grate 3.The fixed lock hook relative with theftproof lock also can be provided with one to two, and its position can be located at the soffit identical or different with theftproof lock.

Claims

1, a kind of Antitheft manhole cover, it is characterized in that being fixed with the fixed lock hook (2) that may be stuck in bottom surface, convex edge in the well grate seat at soffit one end of well grate (3), the other end in a soffit is fixed with theftproof lock, but the moveable lock hook (10) of clamping well grate seat is housed on the theftproof lock.

2, Antitheft manhole cover according to claim 1, it is characterized in that described theftproof lock is that tooth bar (8) is housed in the middle of two slideways (4,9) that join with the well grate, tooth bar underrun holder (7), axle (13) and spring (14) are connected with protecting cover (5), and moveable lock hook (10) is connected on the front end of tooth bar (8).

3, Antitheft manhole cover according to claim 2 is characterized in that upward being connected with spacer (6) by axle (11) and spring (12) at slideway (4), and the lateral bending on the spacer is along in the stopper slot that is stuck on the tooth bar (8).

4, Antitheft manhole cover according to claim 3 is characterized in that spacer (6) end face turns edge on having.