CN2212022Y - Locking device for manhole cover - Google Patents

Abstract

The utility model relates to a locking device for a manhole cover. A groove-shaped locking seat board with an upward opening is fixedly arranged on the back side of a fixing board with a locking hole. A cylindrical rotation shaft is installed on a hole arranged on the bottom of the locking seat board. The upper end of the rotation shaft is provided with a lock groove, and the middle part is fixedly provided with a deflector rod. A lock rod is also fixedly installed on the fixing board. A lock clamp is installed on the lock rod. The end of the deflector rod is clamped on the lock clamp, which enables the rotation of the deflector rod to drive the lock rod to move frontward and rearward. The locking device for a manhole cover is installed on the manhole cover of a manhole, which can effectively prevent the manhole cover from being stolen and lost and can avoid traffic and personal safety accidents.

Description

Locking device for manhole cover

The utility model belongs to the improvement of closedown structure, relates to the locking of manhole well lid.

The set manholes of various underground pipelines such as the upper and lower water in China cities and towns and communication, cable all are directly to cover on well head with cast iron cover at present, the blocking device that there is no need, be easy to stolen losing, not only endanger public property, the more important thing is influences traffic and personal safety.

The purpose of this utility model is to provide a kind of blocking device that can be installed on the manhole well lid, can prevent effectively that the stolen of well lid from losing.

Technical characterictic of the present utility model is: a locking fixed head that has the lockhole consistent with well lid shadoof jack, be installed with the flute profile lock plate that an opening makes progress under its back side lockhole, one tubular rotating shaft is installed on the hole of being opened at the bottom of the lock plate, the bottom is fixed with pin, there is locked groove the rotating shaft upper end, a driving lever fixedly is equipped with at its middle part, the rotation of rotating shaft can drive driving lever and rotate together, on fixed head, also be installed with a locking bar, the locking bar front end extends the fixed head edge, its rear end is withstood by limiting plate fixing on fixed head, locking bar can be moved forward and backward, the pin card is housed, and the termination card that makes driving lever thereon on locking bar, make the rotation of driving lever can drive moving of locking bar.Feature of the present utility model also is, if designed locking is used for manhole cover, need designed locking is fixed on the locking fixed head with the form of screw or welding one end at the well lid back side, make that the shadoof jack coincide on lockhole on the fixed head and the well lid, also need at the fixedly connected Z-shaped card of the other end at the well lid back side in addition, the egative film of Z-shaped card stretches out the edge of well lid.

The utility model is when using operation; shadoof with well lid is a key; it has advantage simple in structure, that use is easy to operate, cost is low; be installed in and prevent effectively on the manhole cover that well lid from losing; not only protect public property, the more important thing is the generation that to avoid traffic and personal safety accident.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Accompanying drawing 1 is structure (back side) schematic diagram of the designed locking of the utility model, and accompanying drawing 2 is the sectional view of A-A in the accompanying drawing 1, and accompanying drawing 3 is the Z-shaped card that uses in the designed well lid locking of the utility model and the connection diagram of well lid.

As shown in drawings, a locking fixed head 1 that has the lockhole 11 consistent with well lid 9 shadoof jacks 10, its back side lockhole is installed with the flute profile lock plate 7 that an opening makes progress for 11 times, it is fixed can adopt screw or welding manner, one tubular rotating shaft 8 is installed on the hole of opening lock plate 7 bottoms, the bottom is fixed with pin, there is locked groove rotating shaft 8 upper ends, can coincide with the front end of general well lid shadoof, be fixedly connected with a driving lever 6 at the middle part of rotating shaft 8, the rotation of rotating shaft 8 can drive driving lever 6 and rotate together, on fixed head 1, also be installed with a locking bar 3, structure fixed installation that can support 2, and locking bar 3 is moved forward and backward, the front end of locking bar 3 extends the edge of fixed head 1, the rear end of locking bar is withstood by limiting plate 4 fixing on fixed head, pin card 5 is housed on locking bar, and the termination of driving lever 6 can be blocked thereon, make the rotation of driving lever 6 can drive moving forward and backward of locking bar.Designed locking also should be installed the other end of locking Z-shaped card 12 of form fixed installation with screw (as Fig. 3) or welding at the well lid back side if be used for well lid, and makes the egative film of Z-shaped card stretch out the edge of well lid.

Operation of the present utility model and use principle are as follows, the centering position, one shadoof jack place at the well lid back side, lockhole 11 on the locking fixed head 1 is aligned with shadoof jack 10 to communicate, with bonding or screw fixed head is fixed on the well lid back side, edge at the well lid other end, the upper end of Z-shaped Metallic card 12 is fixedly connected on the well back side, make the lower end of Z-shaped card stretch out the well lid edge, to be with card 12 these ends to put into the inspection well head earlier then, and card 12 is stuck on the well seat, the well lid that will have this end of locking again covers checking on the well head, uses well lid shadoof (key) to put in the shadoof jack that has locking again, and the shadoof front end is stuck in the locked groove of rotating shaft 8 upper ends, rotating shadoof makes rotating shaft 8 drive driving lever 6, and the locking bar reach is stuck on the wellhead receptacle, thus making well lid and the stuck locking of well seat, well lid can't be opened.When needs are opened well lid, the insertion of well lid shadoof is had in the shadoof jack of locking, the shadoof front end is stuck in the locked groove, the counter-rotation shadoof, driving lever drives locking bar and retreats, and mentions the locked end of well lid earlier with shadoof, makes well lid make card 12 break away from the well seats to the locked end translation again, the Card-terminal of mentioning well lid is then opened whole well lid.

The designed locking of the utility model also can be used in the door (as basement, refuse chute etc.) of various metal constructions separately, and the locking of the various inspection holes (hole) of no airtight requirement.

Claims (2)

1, a kind of well lid blocking device, it is characterized in that, below a locking fixed head back side lockhole that has a lockhole, the flute profile lock plate that an opening makes progress is housed fixedly, a tubular rotating shaft is contained on the hole of being opened at the bottom of the lock plate, there is locked groove the rotating shaft upper end, a driving lever fixedly is equipped with at the middle part, the rotation of rotating shaft can drive driving lever and rotate together, one locking bar also fixedly is housed on fixed head, locking bar can be moved forward and backward, its front end extends the fixed head edge, the rear end is withstood by limiting plate fixing on fixed head, the pin card is housed on locking bar, and the termination card of driving lever makes the rotation of driving lever can drive moving forward and backward of locking bar thereon.

2, according to the described a kind of well lid blocking device of claim 1, it is characterized in that, the locking fixed head is fixed on an end at the well lid back side with the form of screw or welding, lockhole and well lid shadoof jack on the fixed head are matched, at the then fixedly connected Z-shaped card of the other end at the well lid back side, the egative film of Z-shaped card stretches out the edge of well lid.

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