CN201232203Y

CN201232203Y - Linkage locking type anti-theft manhole cover

Info

Publication number: CN201232203Y
Application number: CNU2008201999179U
Authority: CN
Inventors: 孙小果
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-27
Filing date: 2008-10-27
Publication date: 2009-05-06
Anticipated expiration: 2018-10-27

Abstract

The utility model provides a linkage locking type theft-proof manhole cover, wherein, a main body connecting plate (3) of a locking device (2) is fixedly connected with the back of a cover body (1); a regulating shaft (10) is rotated to cause a butterfly nut (9) at the lower part to drive a connecting arm (8) to move up and down, then a linkage telescopic arm (7) can penetrate through a directional fixed bushing (6) to outstretch or retract, so as to achieve the purpose of locking or unlocking; and the utility model has the outstanding advantages of easy unlocking, convenient installation, low cost and good prying prevention.

Description

Blocking lock compact form anti-stealing manhole cover

Technical field: the utility model belongs to inspection shaft lid technical field of structures.

Background technology: at present, because manhole cover is still repeatedly stolen or is damaged by malice in a large number seriously in the city, caused a series of pernicious consequence that car is hurted sb.'s feelings of hindering, not only bring economic loss to the place, influence city image especially, but also cause the legal dispute of some victims and inspection shaft lid administrative department, the innumerable stolen abominable incident of manhole cover is received publicity.Existing manhole cover is still usually any anti-thefting facility is not set.Though and the inspection shaft that has lid is provided with some anti-thefting facilities, because difficulty is installed and changed to its anti-thefting facility complexity, use inconvenience, it is destroyed that locking device is easy to, manufacturing cost height, poor practicability and being difficult to carry out.

Summary of the invention: the purpose of this utility model provides a kind of manufacturing cost that can reduce in order to overcome the existing inspection shaft lid very easily stolen defective of structure just, can play the blocking lock compact form anti-stealing manhole cover of antitheft effect again.

The purpose of this utility model is achieved by the following technical solution.

The utility model is connected and composed by lid and locking device, it is characterized in that, the main body junction plate of locking device is fixedlyed connected with the lid back side; Regulating rest pad is connected with the main body junction plate; Directed supporting arm is fixedly connected on the main body junction plate; Be connected with directed fixed sleeving in directed supporting arm lower end; The interlock telescopic arm passes directed fixed sleeving and linking arm one end hinge connection; The other end of linking arm again with the wing nut hinge connection; Termination, regulating shaft top is stuck in the semi-open type hole clipping of regulating rest pad, by regulating the rest pad location; Wing nut is spun on the screw thread of regulating shaft hypomere; Be located at the regulating shaft top and be provided with special-shaped groove; The utility model main body junction plate be one or distribute symmetrically two or more than two; Every of two or more than two main body junction plate respectively is fixedly connected with directed supporting arm, interlock telescopic arm, directed fixed sleeving and linking arm respectively.Because the utility model can be provided with this blocking lock compact form anti-theft device from a cover to number cover, makes the locking type anti-theft device both single, also symmetry is bilateral, and is also polygon.

The beneficial effects of the utility model are that owing to be provided with blocking lock compact form anti-theft device at the inspection shaft lid back side, special lockhole is mixed special adjusting special spanner, make the theftproof performance of inspection shaft lid strengthen greatly, open easily, easy for installation, low cost of manufacture is easy to popularize and uses.The utility model pick-proof is good, consumptive material is low, locking property is good, must just can open by special-purpose adjusting special spanner on theftproof, and special spanner is high on manufacturing cost, has largely limited the pilferage behavior.

Knot and drawings and Examples are further set forth the utility model content below.

Description of drawings: Fig. 1 is the utility model structural representation;

Fig. 2 is that regulating shaft A-A is to schematic diagram.

The specific embodiment:

See Fig. 1, Fig. 2, Fig. 3, the main body junction plate 3 of locking device 2 adopts bolt to be connected with lid 1 back side; Regulate rest pad 4 and connect welding with main body junction plate 3; Directed supporting arm 5 is fixedly connected with and is connected on the main body junction plate 3; Be connected with directed fixed sleeving 6 in directed supporting arm 5 lower ends; Interlock telescopic arm 7 passes directed fixed sleeving 6 and linking arm 8 one end hinge connections; The other end of linking arm 8 again with wing nut 9 hinge connections; Termination, regulating shaft 10 top is stuck in the semi-open type hole clipping 11 of regulating rest pad 4, by regulating rest pad 4 location; Wing nut 9 is spun on the screw thread of regulating shaft 10 hypomeres; Be provided with special-shaped groove 12 on regulating shaft 10 tops; The utility model main body junction plate 3 be one or distribute symmetrically two or more than two; Two or more than two the main body junction plate 3 every each be fixedly connected with respectively directed supporting arm 5, the interlock telescopic arm 7, directed fixed sleeving 6 and linking arm 8.Because the utility model can be provided with this blocking lock compact form anti-theft device from a cover to number cover, makes the locking type anti-theft device both single, also symmetry is bilateral, and is also polygon, can strengthen locking as required.

Working method of the present utility model is, earlier locking device 2 is transferred to punctured position, the inspection shaft lid is put into given in the drilling again, employing one is locked card hand in join special-purpose mutually with regulating shaft abnormity groove 12, covering the lockhole of being opened 13 from inspection shaft inserts, rotate wrench, make regulating shaft 10 rotations, wing nut 9 is downward along screw thread, promote linking arm 8, make interlock telescopic arm 7 overhanging, insert the inspection shaft lid and give in the default hole on system basis, reach the purpose of locking along directed fixed sleeving 6.Identical therewith, adopt special-purpose wrench counter-rotating, wing nut 9 makes progress along screw thread, and pulling linking arm 8 makes interlock telescopic arm 7 along contracting in the directed fixed sleeving 6, covers in the default hole of giving the system basis from inspection shaft and draws back, and reaches the purpose of opening lock.A pin or nut 14 can be fixed in the outer end of interlock telescopic arm 7, play position-limiting action.

Claims

1, blocking lock compact form anti-stealing manhole cover is connected and composed by lid (1) and locking device (2), it is characterized in that, the main body junction plate (3) of locking device (2) is fixedlyed connected with lid (1) back side; Regulating rest pad (4) is connected with main body junction plate (3); Directed supporting arm (5) is fixedly connected on the main body junction plate (3); Be connected with directed fixed sleeving (6) in directed supporting arm (5) lower end; Interlock telescopic arm (7) passes directed fixed sleeving (6) and linking arm (8) one end hinge connections; The other end of linking arm (8) again with wing nut (9) hinge connection; Regulating shaft (10) termination, top is stuck in the semi-open type hole clipping (11) of regulating rest pad (4), is located by regulating shaft rest pad (4); Wing nut (9) is spun on the screw thread of regulating shaft (10) hypomere; Be located at regulating shaft (10) top and be provided with special-shaped groove (12).

2, blocking lock compact form anti-stealing manhole cover according to claim 1 is characterized in that, main body junction plate (3) be one or distribute symmetrically two or more than two; Every of two or more than two main body junction plate (3) respectively is fixedly connected with directed supporting arm (5), interlock telescopic arm (7), directed fixed sleeving (6) and linking arm (8) respectively.