CN2282006Y - Anti-theft manhole cover - Google Patents

Abstract

The utility model discloses a sewage structure of the public works, particularly a manhole cover and a manhole grate for an inspection manhole and a sewage manhole. The utility model is composed of the manhole cover and a manhole frame. The manhole cover and a manhole frame are connected through at least two pin shafts, and the pin shafts are screwed and connected through a purpose-made key manipulator. The utility model has the advantages of anti-theft, simple structure and safety.

Description

Anti-stealing manhole cover

The utility model relates to anti-stealing manhole cover, the well grate that water-bound thing, especially manhole are used under a kind of municipal engineering.

In background technology, the manhole on the road surface is made of crib, well lid, and is often robbed or burgled because of well lid, makes vehicular traffic easily cause traffic accident and pedestrian to fall into because of carelessness and injures health.Chinese patent CN2177750Y discloses a kind of name and has been called " a kind of anti-stealing manhole cover ", it is to one-time fix to be connected a thick chain of steel between well lid and crib, its deficiency is once well lid damages, welding equipment need be transported to the scene, with new well lid and steel link chain welding, it is linked to be again with crib.Deficiency again is that well lid can arbitrarily be opened, and vehicular traffic also can press off well lid, exists unsafe factor well grate also to have the problems referred to above and deficiency.Other retaining mechanism of employing is also arranged, but structure is all complicated on well lid, well grate are antitheft.

The utility model purpose be provide at above-mentioned deficiency a kind of both antitheft simple in structure, change anti-stealing manhole cover (grate) easily.

Technical solution of the present utility model is achieved in that anti-stealing manhole cover comprises crib, well lid.At least be connected by two bearing pins between crib and the well lid, and be furnished with and twist the key mechanical hand that connects bearing pin.This manipulator is an elbow cover, and two ends become an angle of 90 degrees, and one handle and key bit are respectively inserted in its two ends, and handle is connected by a wire rope in the elbow cover with key bit.Turning handle drives key bit by wire rope and rotates together.During locking, bearing pin is inserted on the key bit of key mechanical hand and bearing pin is delivered to well lid and crib connection hole by preformed hole on the well lid, turning handle, driving key bit by wire rope rotates, bearing pin is screwed into or inserts connecting hole, be connected between well lid and the crib, reach locking, play antitheft purpose.Bearing pin is provided with two at least along the well lid circumference.This programme also is applicable between well grate and the crib and locks.

The utility model advantage and good effect are to realize well lid, well grate anti-theft feature with simpler structure.Well lid with only under well lid, connect on crib is connected with two bearing pins, and a plurality of well lid only need be equipped with a key mechanical hand just.Whole anti-theft device is simple, is convenient to promote.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is an anti-stealing manhole cover locking state structure diagram.

Fig. 2 is a key mechanical hand structure diagram.

Fig. 3 is the key bit structure diagram.

Fig. 4 is the pin shaft structure sketch.

Fig. 5 is the bearing pin second example structure sketch.

Letter 6 is connecting hole structure diagrams on the well lid.

Referring to Fig. 1, anti-stealing manhole cover is formed (well grate figure slightly) by crib 1, well lid 2, and the two connects locking by bearing pin 3.Be advisable for well lid three to four bearing pins that then are uniformly distributed along the circumference, bearing pin 3 is by 5 lockings of key mechanical hand, and corresponding bearing pin 3 is reserved a keyhole 4 on well lid 2 surfaces, for slotting key mechanical hand 5.Be advisable for well grate uniform four bearing pins 3 around the well grate, the bar hole from the well grate is inserted key mechanical hand 5.

Referring to Fig. 2, key mechanical hand 5 is made up of elbow cover 6, the elastic wire rope 9 that is inserted in handle 7 and the key bit 8 in its two ends and is connected handle 7 and key bit 8.The effect of elbow cover is vertically to spur handle 7 can make key bit 8 move horizontally; Horizontally rotate handle 7 key bit 8 is vertically rotated, also can make the key mechanical hand visit certain depths, well lid 2 bottom surfaces.Key bit 8 ends have Z type groove, Z type groove by the slot of axially opening along key bit 8 10 with up and down radially mutually the slot 11 that turns of negative side form (seeing Fig. 3 for details).

Referring to Fig. 4, the bearing pin 3 that is adopted is bolt, and there is the shaft shoulder 12 at the middle part, and terminal shaft part radially studs with pin 13.The bearing pin 3 of this structure is mainly used in well grate and crib locking.During locking, bearing pin 3 is inserted in the key bits 8, and pin 13 is delivered to connection hole between well grate and the crib 1 with the key mechanical hand 5 that is inserted with band bearing pin 3 by the bar hole on the well grate in slot 10 is in slot 11, the centering centering is twisted handle 7 bearing pin 3 is screwed in the hole; The anti-handle 7 of twisting drives key bits 8 counter-rotatings, makes that pin 13 is in slot 10 places on the bearing pin 3, and 7 key bits 8 of outer handle are recessed bearing pin 3, and bearing pin 3 is left between well grate and the crib 1, has locking effect.Connecting hole on the well grate is a unthreaded hole, and the connecting hole on the crib 1 is the band internal thread hole, for anti-bearing pin 3 corrosions, can inlay tapped plastic sheath in crib 1 connecting hole.Goodbye Fig. 2 crosses a cross bar 14, or overlaps two lugs of 6 external weldings at elbow on elbow cover 6, the bar hole edge plays the role of positioning on the well grate in order to key mechanical hand 5 is ridden over.

Referring to Fig. 5, bearing pin 3 is an optical axis, on have and radially stud with pin 13,15, the bearing pin 3 of this structure is mainly used in locking between well lid 2 and the crib 1.

Referring to Fig. 6, the open-minded hole of passing through for pin 15 16 is arranged on the connecting hole 18 on the corresponding well lid 2, the location blind hole 17 of pin 15 is arranged at the back side, connecting hole 18 inner end.During locking, the bearing pin 3 that will have pin 15 inserts in the connecting hole 18, and pin 15 passes through from the hole 16 of slitting, and twists horizontal blind hole 17 places, location that arrive, and in the connecting hole on the pin 15 front end position fill-in well frames 1, the position, rear end is inserted in the connecting hole 18 of well lid 2.Because of pin 15 is in the blind hole 17 of location at last, instead twist handle 7, can withdraw from key bit 8, finish locking.

Claims (4)

1. anti-stealing manhole cover, comprise crib (1), well lid (2), it is characterized in that being connected to be furnished with by two bearing pins (3) at least between well lid (2) and the crib (1) twisting the key mechanical hand (5) that connects bearing pin (3), described key mechanical hand (5) is an elbow cover (6), one handle (7) and key bit (8) are respectively inserted in its two ends, and handle (7) is connected by a wire rope (9) in elbow cover (6) with key bit (8).

2. according to the described anti-stealing manhole cover of claim 1, it is characterized in that bearing pin (3) is a bolt, the bolt end has a shaft part and radially inlays a pin (13), and corresponding key bit (8) is made the Z type groove that passes through for pin (13).

3. according to the described anti-stealing manhole cover of claim 1, it is characterized in that radially studding with on the bearing pin (3) merchant's pin (13,15), corresponding key bit (8) end is made the Z type groove that passes through for pin (13).

4. according to the arbitrary described anti-stealing manhole cover of claim 1 to 3, it is characterized in that elbow puts a cross bar (14) is set.

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