CN2864015Y

CN2864015Y - Well cover lock

Info

Publication number: CN2864015Y
Application number: CN 200620033008
Authority: CN
Inventors: 邬启任
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-25
Filing date: 2006-01-25
Publication date: 2007-01-31
Anticipated expiration: 2016-01-25

Abstract

The utility model discloses a well cover lock for a sewer, including a lock body and a lock core in the lock body, the lock body is a cylinder whose inner circular aperture is divided into an upper and a lower chamber by a partition cover, the lock core is mounted in the inner aperture of the lock body, a lock core rod is tightened in the lower chamber of the lock body by a lock core spring positioned in the lower chamber of the lock body, a lock pothook at bottom of the lock core rod is transverse outside the lock body and draws a well loop, a lock core head having a trigonal or a polygonal section is provided in the upper chamber of the lock body. The well cover lock of the utility model can be opened only by a special cylinder key prepared for the lock core head, has a good theftproof function. A mud barrier plate is provided in a slot between the lock core head and the upper chamber of the lock body, i.e., a key aperture, thereby jam of the key aperture due to the mud can be effectively prevented.

Description

Pattern manhole cover lock

(1) technical field:

The utility model relates to lockset kind, the pattern manhole cover lock that particularly a kind of feedwater, draining, post and telecommunications, sewer well lid are used.

(2) background technology:

The cover plate of the feedwater on the urban road, draining, post and telecommunications and sewer is commonly called as well lid, wherein feedwater, draining, post and telecommunications with well lid based on toroidal, the sewer rainwater with well lid based on oblong-shaped, what all use for load capacity is casting iron well lid, well lid covers on walling crib, the walling crib card is built on ground, and movable casting iron well lid all is the object that the undesirable steals all the time, has for preventing the commonsense method that well lid is taked by stealing:

1, with many screws well lid is tightened on the walling crib.

2, adopt the hinge of wearing screw rod to be rotationally connected with walling crib.

3, with mild steel link chain well lid and walling crib are worn and lock together, be mainly used on the well lid of gutter.

1st, the mechanical connection method of the 2 two kind of method has just increased the difficulty of anti-pilferage, but utilizes special tool such as clamp, spanner etc. still well lid can be taken away.The 3rd kind of method is reliable, but under the environment of road abominable (wind, drench with rain, Exposure to Sunlight, silt), the lockset that exposes is corrosion and obstruction very easily, but is unable to handle when wanting to open, and lockset have to be smashed just can take iron chains away and open well lid.

In addition the patent that also had multiple pattern manhole cover lock application, but all owing to the many-sided reason such as the complex structure of lock and the road adverse circumstances that can't overcome, thereby can not get using widely.

(3) utility model content:

At the above-mentioned well lid weak point with lock, the purpose of this utility model has provided a kind of be not afraid of adverse circumstances, simple in structure, pattern manhole cover lock with very strong anti-theft feature.

The pattern manhole cover lock that can realize above-mentioned purpose has the most basic lock body on the well lid and the lock core in the lock body of being fixed on, different is that lock body is the cylindrical shell in two interior circular hole chambeies up and down with perforation, the lock core that is made of lock core head and lock core pole is set in the lock body endoporus, lock core pole is positioned at lock core tensioned in the lock body cavity of resorption in the lock body cavity of resorption, the locking and hanging hook of lock core pole bottom exposes to lock body and catches on walling crib outward, and the lock core head of triangle or polygonal cross-section is positioned at the lock body epicoele.Above-described is the locking state of pattern manhole cover lock, compressed lock core spring upwards pushes up lock core pole, the locking and hanging hook that links to each other upwards effectively catches on walling crib, want the turn-off locking and hanging hook and will reverse lock core pole, this will finish by reversing the lock core head, produce bigger frictional force owing to locking and hanging hook effectively catches on walling crib, reversing the lock core head earlier should be downwards by making locking and hanging hook separate with walling crib, and just easily the rotation lock core print is opened pattern manhole cover lock.The lock core head of triangle or polygonal cross-section is built in the lock body epicoele, gap has between the two constituted traditional keyhole, instrument with common clamp spanner and so on is difficult to open, have only the key made from the special sleeve with triangle or polygonal cross-section just can easily open, this is any special measures that general pilferage thief can't grasp.Simultaneously of the present utility model simple in structure, the precision that cooperatively interacts is not high, even whole lock body, lock core gets rusty does not also influence use.

In order to prevent that in the space of silt between lock body epicoele and lock core head be to pile up in the keyhole, influence the unlatching of pattern manhole cover lock, can be provided with the lock core end surface concordant with lock body epicoele end face, cover is loaded onto dashboard in the space of lock core head and lock body epicoele, the lock body epicoele is built-in with the dashboard spring, compressed dashboard spring is stretched in lock core crown face with dashboard, and the dashboard capping rests on the end face of lock core head and lock body epicoele like this, can refuse silt outside keyhole.The sleeve key inserts when unblanking, and dashboard is inwardly made a concession, and the dashboard return placed the end face of lock core head and lock body epicoele when the sleeve key left.

Lock core head shape of cross section is preferably equilateral triangle, this is with the general the most ticklish shape of instrument, this will cooperate with the size of lock body epicoele certainly and guarantees that rule of thumb, the distance of the summit of equilateral triangle and lock body epicoele wall had better not be above 2 millimeters.

For smoothly the mounting shaft cover lock is on well lid, the lock body outer wall is provided with the connecting ring that connects firmly with well lid, local thickening on the position of well lid dress lock simultaneously, and make lockhole, and the lock body back clevis of packing into connects firmly with the local position that thickeies of well lid.

The way that connects firmly spacer is set on the circular hole in lock body it can be divided into two chambeies up and down, certainly can also use method for distinguishing, the lock core pole of spacer below is provided with the step greater than spacer, for solving dashboard spring and the lock core spring support problem in two chambeies about lock body, can lock body be provided with on the two chamber faces up and down can be fixedly connected the centre porose on, bottom end cover, the simplest method be to use be threaded on, bottom end cover, can adopt built-in and the external dual mode, built-in mode promptly goes up, bottom end cover places lock body up and down in the two chamber faces, the external mode promptly goes up, bottom end cover places lock body up and down outside the two chamber faces, and the lock core spring places between step and the bottom end cover and with step with being compressed and withstands on the spacer like this; The dashboard spring places between spacer and the dashboard with being compressed, simultaneously the dashboard spring with the dashboard roof pressure on upper end cover.Generally the length of lock core pole is greater than the length of lock core head, so spacer is arranged on the side on the upper side of circular hole in the lock body.

Advantage of the present utility model:

1, the lock body of the utility model pattern manhole cover lock and lock core adopt bigger rotation in gap and mobile cooperation, even pattern manhole cover lock still can normally use under the situation of getting rusty.

2, the lock core head sinks into the cylinder in the lock body in being, sleeve key that need not be special is difficult to open, and therefore has very strong anti-theft feature.

3, the utility model pattern manhole cover lock also is provided with dashboard and is not subjected to the obstruction of silt with the keyhole between protection lock core print and the lock body, makes things convenient for the unlatching of pattern manhole cover lock.

(4) description of drawings:

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the vertical view of Fig. 1 embodiment.

(5) specific embodiment:

In the embodiment as shown in Figure 1 and Figure 2, lock body 1 is straight pipe shape, the side on the upper side of inner orifice is provided with the spacer 8 that becomes one with it, spacer 8 is separated into the two parts that communicate with the inner orifice of lock body 1, and the top of lower nozzle is provided with the built-in upper and lower end cap 10,11 with endoporus that can be connected with engage thread with it with the bottom on the lock body 1.Lock core 5 is made up of lock core head and lock core pole, the junction of lock core head and lock core pole is provided with the step 9 of diameter greater than spacer 8, the inner hole sleeve that lock core 5 passes upper and lower end cap 10,11 is loaded in lock body 1 pore, the lock core head is positioned at the top of lock body 1 inner orifice and is the cross sectional shape of equilateral triangle, and the end face of lock core head is concordant with the top of lock body 1 upper orifice; Lock core pole is positioned at the bottom of lock body 1 inner orifice together with step 9, and the bottom of lock core pole is stretched out the outer and extending transverselies of bottom end cover 11 and formed locking and hanging hooks 7, and locking and hanging hook 7 can upwards catch on walling crib.

Lock core spring 6 places the bottom of lock body 1 inner orifice with being compressed, and its upper and lower side roof pressure respectively upwards withstands on the spacer 8 on step 9 and bottom end cover 11 and with step 9; Dashboard spring 3 places the top of lock body 1 inner orifice with being compressed, be set with dashboard 2 in the space on lock core head and lock body 1 inner orifice top, the upper and lower side of dashboard spring 3 roof pressure respectively upwards withstands on the upper end cover 10 on dashboard 2 and spacer 8 and with dashboard 2, because stopping of lock body 1 inner orifice top upper end cover 10, dashboard 2 can be by dashboard spring 3 tops from lock body 1.

The outer tube wall middle part of lock body 1 also is fixedly connected with connecting ring 4 in the side on the upper side, offers screw on the connecting ring 4, lock body 1 can be connected firmly on well lid with bolt.

During use, use with the supporting sleeve key of the first-class triangle edge shape of lock core and inwardly disclose out dashboard 2, sleeve key and lock core head are coupled to behind the end earlier firmly downwards, make locking and hanging hook 7 and walling crib from, the turnbarrel key leaves walling crib with locking and hanging hook 7 can open well lid.When closing well lid, equally firmly press lock core head and rotation, unclamp the sleeve key after locking and hanging hook 7 puts in place, locking and hanging hook 7 colludes automatically tightly on walling crib.

Claims

1, pattern manhole cover lock, comprise the lock body that connects firmly with well lid and the lock core in the lock body, it is characterized in that: lock body (1) is divided into the cylindrical shell in two chambeies up and down for interior circular hole, lock core (5) is set in lock body (1) endoporus, the lock core spring (6) that lock core pole is positioned in lock body (1) cavity of resorption is stretched in lock body (1) cavity of resorption, the locking and hanging hook (7) of lock core pole bottom places outside the lock body (1) and is used to catch on walling crib, and the lock core head of triangle or polygonal cross-section is positioned at lock body (1) epicoele.

2, pattern manhole cover lock according to claim 1, it is characterized in that: the lock core end surface is concordant with lock body (1) epicoele end face, be set with dashboard (2) in the space of lock core head and lock body (1) epicoele, the dashboard spring (3) that dashboard (2) is positioned in lock body (1) epicoele is stretched in lock core crown face.

3, pattern manhole cover lock according to claim 1 and 2 is characterized in that: lock core head shape of cross section is an equilateral triangle, and the distance of the summit of equilateral triangle and lock body (1) epicoele wall is less than 2 millimeters.

4, pattern manhole cover lock according to claim 1 and 2 is characterized in that: lock body (1) outer wall is provided with the connecting ring (4) that connects firmly with well lid.

5, pattern manhole cover lock according to claim 1 and 2, it is characterized in that: the spacer (8) that connects firmly with the interior circular hole of lock body (1) is divided into two chambeies up and down with it, the lock core pole of spacer (8) below is provided with the step (9) of diameter greater than spacer (8), lock body (1) epicoele end face and cavity of resorption bottom surface be provided with respectively connect firmly with it have endoporus on, bottom end cover (10,11), lock core spring (6) places between step (9) and the bottom end cover (11) and with step (9) and withstands on the spacer (8), and dashboard spring (3) places between spacer (8) and the dashboard (2) and with dashboard (2) and withstands on the upper end cover (10).

6, pattern manhole cover lock according to claim 5 is characterized in that: spacer (8) is in the top of the interior circular hole of lock body (1).

7, pattern manhole cover lock according to claim 5 is characterized in that: upper and lower end cap (10,11) is connected with the cavity of resorption bottom surface with lock body (1) epicoele end face respectively in the mode of screw thread.