CN201236554Y

CN201236554Y - Hollow anti-theft well cover lock

Info

Publication number: CN201236554Y
Application number: CNU200820014622XU
Authority: CN
Inventors: 李宝全; 赵杰; 袁忠伟; 初乃茂
Original assignee: DALIAN WATER SUPPLY GROUP SECONDARY WATER SUPPLY ENGINEERING Co Ltd
Current assignee: DALIAN WATER SUPPLY GROUP SECONDARY WATER SUPPLY ENGINEERING Co Ltd
Priority date: 2008-08-06
Filing date: 2008-08-06
Publication date: 2009-05-13
Anticipated expiration: 2018-08-06

Abstract

The utility model relates to a lock, particularly to a hollow anti-theft lid lock. The lock comprises a lock casing which consists of a lock cover (1) and a lock box (4), a lock core (15) arranged in the lock casing, a lock plunger (13) which is matched with the lock core (15), a spring (11) which leans against the lock plunger (13) and a key which is matched with the lock core (15). The utility model is characterized in that an axial-direction through hole is formed in the center of the lock core (15); and lock core hole inner teeth (9) which are matched with the key are formed on the side wall of the through hole. Furthermore, the utility model has the advantages that the mud and sand can not be accumulated, the water can not be stored, the service life is long, and the motion is flexible and reliable.

Description

Hollow anti-stealing manhole cover lock

Technical field

The utility model relates to a kind of lockset, particularly a kind of hollow anti-stealing manhole cover lock.

Background technology

At present, water supply pipe, communications facility etc. mostly is installed on underground, and concordant place with ground is provided with well head in the relevant position, on well head, be stamped well lid, for hinge is connected, after well lid is closed, can well lid be locked in the well head place between the edge of well lid and well head by lockset.Existing well lid lockset is general lockset, and lock housing is arranged, and locking bolt and spring are arranged in lock housing, is furnished with lock core mutually with locking bolt, by key rotation lock core, locking bolt is moved reach the purpose of locking or unlatching.Existing this lockset lacks effective anti-theft measure; Keyhole is blocked by silt particle easily, can't insert key behind the obstruction; Also poured into by the rainwater snow-broth easily, cause corrosion phenomena; Therefore existing lockset is short application life, and theftproof performance is poor.

Summary of the invention

The purpose of this utility model provides and a kind ofly prevents in lock core inside that silt particle from piling up, preventing water, be difficult for producing the corrosion stuck phenomenon, long service life, hollow anti-stealing manhole cover lock that theftproof performance is good, overcomes the deficiencies in the prior art.

Hollow anti-stealing manhole cover lock of the present utility model, locking bolt, spring that leans locking bolt that it comprises the lock housing be made up of locking closure and lock box, be located at lock core in the lock housing, match with lock core and the key that matches with lock core, it is characterized in that: there is axially extending bore described lock core center, and the sidewall in its hole is provided with the lock core hole internal tooth that matches with key.

Hollow anti-stealing manhole cover lock of the present utility model, the external end head of wherein said locking bolt is provided with the inclined-plane, described spring is located between the inner termination and lock box sidewall of locking bolt, on locking bolt, be provided with locking bolt and stir lock core that projection and the outside of lock core be provided with and stir projection and match, be provided with locking bolt in the lock box inboard and move limiting block.

Hollow anti-stealing manhole cover lock of the present utility model, wherein said lock core hole internal tooth is semicircle shape and distributes.

Hollow anti-stealing manhole cover lock of the present utility model, wherein said lock box inboard is provided with lock core rotary spacing retaining.

Hollow anti-stealing manhole cover lock of the present utility model, wherein said key comprises key bar, and the end outside of key bar is provided with the key turns tooth that matches with the lock core hole internal tooth, is provided with well lid and carries ear on key bar, and the other end of key bar is provided with handle.

Hollow anti-stealing manhole cover lock of the present utility model, the two ends of wherein said locking closure is provided with mounting plate, is provided with installing hole on mounting plate.

Hollow anti-stealing manhole cover lock of the present utility model, owing to axially extending bore is arranged in the lock core center, the sidewall in its hole is provided with the lock core hole internal tooth that matches with key, during installation this lockset is fixed on the bottom surface side edge of well lid, can spills from the lock core centre bore if any silt particle, ponding or other dirts at ordinary times, in lock core, do not pile up, not influencing key inserts, also be difficult for being produced stuck phenomenon, in the application life of having improved lockset, strengthened theftproof performance by the sewage corrosion.

Because the external end head of locking bolt is provided with the inclined-plane, spring is located between the inner termination and lock box sidewall of locking bolt, being provided with locking bolt on locking bolt stirs lock core that projection and the outside of lock core be provided with and stirs projection and match, be provided with locking bolt in the lock box inboard and move limiting block and lock core rotary spacing retaining, can contacting when closing well lid by this inclined-plane and well lid seat ring edge, gravity by well lid makes the locking bolt withdrawal, spring is compressed simultaneously, when the locking bolt termination is positioned at well lid seat ring edge when below, under the effect of spring, eject, with Manhole cover lock on the well lid seat ring, the mobile of locking bolt has limiting block to control, therefore this lockset is easy and convenient to handle, puts accurately flexibility and reliability in place.

Because being provided with well lid on key bar carries ear and handle, make the locking bolt withdrawal by the key bar during unlatching, carry ear simultaneously and be stuck in the well lid below, utilize handle to be pulled upwardly well lid, so this lockset has, and unlatching is easy, the advantage of good operation.

Description of drawings

Fig. 1 is the profile perspective view of the utility model specific embodiment;

Fig. 2 is the perspective view of locking closure and mounting plate;

Fig. 3 is the perspective view of lock box and internal part thereof;

Fig. 4 is the schematic top plan view of lock box and internal part thereof;

Fig. 5 is the perspective view of key.

The specific embodiment

Shown in Fig. 1,2,3,4: 1 is locking closure, is welded with mounting plate 3 at the two ends of locking closure 1, is processed with installing hole 2 on mounting plate 3.

4 is lock box, in lock box 4, be provided with locking bolt front 8 and locking bolt backstop 10 and the lock core limiting block 7 into a single integrated structure with lock box 4, wherein locking bolt front 8 and locking bolt backstop 10 at grade and all be arranged in parallel with the side of lock box 4, and locking bolt 13 is between the side of locking bolt front 8 and locking bolt backstop 10 and lock box 4.On locking bolt 13, be provided with the into a single integrated structure locking bolt of locking bolt 13 and stir projection 12, locking bolt is stirred the gap location that projection 12 just forms between locking bolt front 8 and locking bolt backstop 10, stir projection 12 by locking

bolt front

8 and 10 pairs of locking bolts of locking bolt backstop when locking bolt 13 moves and carry out spacing.The outside that the center has a lock core 15 of axially extending bore is provided with the into a single integrated structure lock core of lock core 15 and stirs projection 14.The two ends of lock core 15 are provided with on the box bottom surface that step is inserted in lock box 4 respectively and on the locking closure 1, by step lock core are carried out axial location, can be screw between locking closure 1 and the lock box 4 and are connected or weld.Endoporus place at lock core 15 is processed with lock core hole internal tooth 9.External end head at locking bolt 13 is processed with inclined-plane 5.

As shown in Figure 5: 17 is key bar, in an end machining of key bar 17 the key turns tooth 19 that matches with lock core hole internal tooth 9 is arranged, and key bar 17 is provided with the horizontal ear 16 of carrying, and in another termination of key bar 17 horizontal handle 18 is arranged.Lock core hole internal tooth 9 and key turns tooth 19 are semicircle shape and distribute.

During use, this lockset is fixed on well lid bottom surface side edge, makes locking bolt 13 be ejected to advance just to be stuck on the edge of well lid seat ring by the installing hole on the mounting plate 32.Also rotate in the mesopore with key turns tooth 19 insertion lock cores 15 during unlatching, move withdrawal, carry the below that ear 16 just hangs over well lid simultaneously, upwards draw handle 18 can open well lid thereby make lock core 15 rotate drive locking bolts 13.

Claims

1, a kind of hollow anti-stealing manhole cover lock, locking bolt (13), spring (11) that leans locking bolt (13) that it comprises the lock housing be made up of locking closure (1) and lock box (4), be located at lock core (15) in the lock housing, match with lock core (15) and the key that matches with lock core (15), it is characterized in that: there is axially extending bore described lock core (15) center, and the sidewall in its hole is provided with the lock core hole internal tooth (9) that matches with key.

2, hollow anti-stealing manhole cover lock according to claim 1, it is characterized in that: the external end head of described locking bolt (13) is provided with inclined-plane (5), described spring (11) is located between the inner termination and lock box sidewall of locking bolt (13), on locking bolt (13), be provided with locking bolt and stir lock core that the outside of projection (12) and lock core (15) is provided with and stir projection (14) and match, be provided with locking bolt in lock box (4) inboard and move limiting block (8,10).

3, hollow anti-stealing manhole cover lock according to claim 1 and 2, it is characterized in that: described lock core hole internal tooth (9) is semicircle shape and distributes.

4, hollow anti-stealing manhole cover lock according to claim 3, it is characterized in that: described lock box (4) inboard is provided with lock core rotary spacing retaining (7).

5, hollow anti-stealing manhole cover lock according to claim 4, it is characterized in that: described key comprises key bar (17), the one end outside of key bar (17) is provided with the key turns tooth (19) that matches with lock core hole internal tooth (9), be provided with well lid and carry ear (16) on key bar (17), the other end of key bar (17) is provided with handle (18).

6, hollow anti-stealing manhole cover lock according to claim 5, it is characterized in that: the two ends of described locking closure (1) is provided with mounting plate (3), is provided with installing hole (2) on mounting plate (3).