CN203514985U

CN203514985U - Antitheft lock cover

Info

Publication number: CN203514985U
Application number: CN201320664235.1U
Authority: CN
Inventors: 张维昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-28
Filing date: 2013-10-28
Publication date: 2014-04-02
Anticipated expiration: 2023-10-28

Abstract

The utility model discloses an antitheft lock cover. The antitheft lock cover comprises an upper cover body and a lower cover body, wherein two arc lock plates and resetting devices for the lock plates are arranged on the upper end surface of the lower cover body; the arc lock plates are in central symmetry and are slidably; the upper cover body is provided with a rotatable long shifting strip and a coded lock; the width of the long shifting strip is smaller than the distance between the two lock plates; the length of the long shifting strip is greater than the distance between the two lock plates; arc surfaces are arranged at two ends of the long shifting strip along the length direction; a projection is arranged on an inward side of each lock plate; a plurality of rotating plates are arranged at the lower end of the coded lock and are provided with grooves matched with the projections; the upper cover body covers the lower cover body and is connected with the lower cover body; the long shifting strip is placed between the two lock plates; when the antitheft lock cover is in an unlocking state, the grooves in the rotating plates are aligned to one another, the projections are placed in the grooves, and arc edges of the lock plates are aligned with the outer edge of the lower cover body; and when the antitheft lock cover is in a locking state, the grooves in the rotating plates are not aligned with each other, the projections are abutted to the outer edges of the rotating plates, and the lock plates are projected out of the outer edge of the lower cover body. The antitheft lock cover is high in antitheft performance and is convenient to operate.

Description

A kind of anti-theft lock cover

Technical field

The utility model relates to a kind of anti-theft device of valve, particularly a kind of anti-theft lock cover of theft-proof gate valve.

Background technology

Gate valve is located on liquid-transport pipe-line for blocking or connect the conveying of liquid, is located at some and is all provided with anti-theft device such as the gate valve on the conveyance conduit of the precious liquids such as oil.Theft-proof gate valve in tradition arranges the stealingproof sleeve that surrounds valve rod in the valve rod periphery of gate valve, and in stealingproof sleeve upper end, anti-theft lock cover is set, and by anti-theft lock cover and stealingproof sleeve sealed, realizes antitheft function.At present, the sealed mode of anti-theft lock cover and stealingproof sleeve generally has two kinds: a kind of is that anti-theft lock cover one end is hinged on stealingproof sleeve, is connected, thereby realizes both sealed on the other end by mechanical lock with stealingproof sleeve; The another kind of multiple cipher lock that arranges on anti-theft lock cover, is rotated and is driven the card of lower end to coordinate with the restriction protrusion of stealingproof sleeve inside by coded lock, and anti-theft lock cover locking is remained on stealingproof sleeve.But the former safety factor is lower, be easily considered to crack, and the key of unblanking is difficult for preservation, easily loss; And the latter's the lock operation of unblanking is all very complicated, and easily password is obscured.

For the deficiencies in the prior art, problem to be solved in the utility model is to provide a kind of theftproof performance better and the anti-theft lock cover of the theft-proof gate valve that operation is easier.

For this reason, the utility model is realized in the following way: a kind of anti-theft lock cover, it is characterized in that: comprise upper cover body and lower cover, described lower cover upper surface is provided with two slidably circular arc locking plates that are centrosymmetric and the resetting means of locking plate, described upper cover body is provided with the rotating rectangular and coded lock of stirring, describedly stir rectangular width and be less than the spacing of two locking plates and the spacing that its length is greater than two locking plates, describedly stir rectangular two ends along its length and there is arc surface, a described locking plate inwardly side is provided with projection, the lower end of described coded lock is provided with a plurality of rotatable lamellas, described rotatable lamella is provided with the groove mating with projection, described upper cover body is covered on lower cover and with it and is connected, describedly stir rectangular being placed between two locking plates, under released state, groove alignment and projection on described rotatable lamella are placed in groove, the arc-shaped edges of described locking plate aligns with lower cover outer edge, under lock-out state, unjustified and the projection of groove on described rotatable lamella withstands on rotatable lamella outer, described locking plate protrudes from lower cover outer edge.

Described resetting means comprises spring and is located at the spring eye on locking plate, described lower cover upper surface is provided with backstay, described locking plate is provided with the location slotted hole mating with backstay, described spring eye is communicated with location slotted hole, described backstay is through location slotted hole, described spring is placed in spring eye and one end is against on backstay, and the other end is against on spring eye inner side.

Described stir rectangular by being connected with the handle of stirring on upper cover body upper surface through the rotating shaft of upper cover body.

In the utility model, anti-theft lock cover is placed on stealingproof sleeve, upper cover body is stuck in outside stealingproof sleeve, lower cover stretches in stealingproof sleeve, by rotation, stirring the rectangular locking plate that can push outwards slides, by coordinating with the restriction protrusion in stealingproof sleeve, anti-theft lock cover is remained on stealingproof sleeve and cannot upwards exit stealingproof sleeve, the groove that simultaneously rotational password lock makes to align on the rotatable lamella of its lower end is upset and is left the position of aiming at locking plate upper protruding block, thereby even making to rotate stirs rectangular and does not withstand in the situation of locking plate, locking plate also can rotatable lamella outer withstand and can not return in lower cover, thereby realized the sealed of anti-theft lock cover and stealingproof sleeve, and when needs are uncapped, according to password rotational password, lock, make the groove on rotatable lamella align and come the position of aiming at projection, thereby projection is entered in groove, the arc-shaped edges of locking plate aligns with lower cover outer edge again, now just anti-theft lock cover upwards can be taken out to stealingproof sleeve.The theftproof performance of this anti-theft lock cover is good, and all very easy when unblanking with locking.

Accompanying drawing explanation

Fig. 1 is the structural representation of lower cover in the utility model;

Fig. 2 is the structural representation of locking plate in the utility model;

Fig. 3 is the structural representation of upper cover body in the utility model;

Fig. 4 is the rear elevation of Fig. 3;

The structural representation when anti-theft lock cover that Fig. 5 provides for the utility model is arranged on stealingproof sleeve.

The specific embodiment

With reference to accompanying drawing, this anti-theft lock cover, comprise upper cover body 2 and lower cover 9, the slightly larger in diameter of described upper cover body 2 is in the diameter of lower cover 9, described lower cover 2 upper surfaces are provided with two slidably circular arc locking plates 1 that are centrosymmetric and the resetting means of locking plate, specifically, described resetting means comprises spring 4 and is located at the spring eye 8 on locking plate, described lower cover 2 upper surfaces are provided with backstay 6, described locking plate 1 is provided with the location slotted hole 5 mating with backstay 6, described spring eye 8 is communicated with location slotted hole 5, described backstay 6 is through location slotted hole 5, described spring 4 is placed in spring eye 8 and one end is against on backstay 6, the other end is against on spring eye 8 inner sides, described upper cover body 9 is provided with rotatingly stirs rectangular 11 and coded lock 16, describedly stir rectangular 11 by being connected with the handle 15 of stirring on upper cover body 9 upper surfaces through the rotating shaft 12 of upper cover body 9, described rectangular 11 the width stirred is less than the spacing of two locking plates 1 and the spacing that its length is greater than two locking plates 1, described rectangular 11 two ends along its length of stirring have arc surface, a described locking plate 1 inwardly side is provided with projection 7, the lower end of described coded lock 16 is provided with a plurality of rotatable lamellas 13, described rotatable lamella 13 is provided with the groove 14 mating with projection 7, described upper cover body 9 is covered on lower cover 2 and with it and is connected, describedly stir rectangular 11 and be placed between two locking plates 1, the bottom 13 of described coded lock 16 is placed in the cavity 3 on lower cover 2, under released state, groove 14 alignment and projection 7 on described rotatable lamella 13 are placed in groove 14, the arc-shaped edges of described locking plate 1 aligns with lower cover 2 outer edges, under lock-out state, unjustified and the projection 7 of groove 14 on described rotatable lamella 13 withstands on rotatable lamella 13 outers, described locking plate 1 protrudes from lower cover 2 outer edges.

The utility model is worked in the following way: under released state, anti-theft lock cover is put on stealingproof sleeve 18, lower cover 2 extend into stealingproof sleeve 18 inside, in upper cover body 9, be stuck in the restriction protrusion 17 of stealingproof sleeve interior 18, anti-theft lock cover can be remained on stealingproof sleeve 18, by stirring handle 15 rotations, stir rectangular 11, the arc surface of stirring rectangular 11 length direction both sides contacts with locking plate 1 and locking plate 1 is outwards ejected and Compress Spring 4, now the restriction protrusion 17 on stealingproof sleeve 18 is just sandwiched between the locking plate 1 and the positive stop lug boss 10 in upper cover body 9 of protrusion, make the anti-theft lock cover can be not stressed and throw off from stealingproof sleeve, simultaneously, rotational password lock 16 is upset the groove 14 on a plurality of rotatable lamellas 13 and is left the position of aiming at the projection 7 on locking plate 1, withstand the outer that makes in the situation that stirring rectangular 11 return locking plate 1 still can be rotated sheet 13, and can not bounce back, thereby realized the locking of anti-theft lock cover and stealingproof sleeve 18 positions, in the situation that not knowing coded lock password, other staff cannot open anti-theft lock cover gate valve is operated, play good anti-theft effect.When needs are opened anti-theft lock cover, according to password rotational password lock 16, now the groove on a plurality of rotatable lamellas 13 14 can align and come the position of aiming at the projection 7 on locking plate 1, locking plate 1 be not struck rectangular 11 withstand in the situation that, just under the restoring force effect of spring 4, retract in lower cover 2, projection 7 enters in groove 14 simultaneously, make anti-theft lock cover get back to released state, now just can anti-theft lock cover upwards be taken off from stealingproof sleeve by swing handle 15, and then gate valve is operated, very convenient.

Claims

1. an anti-theft lock cover, it is characterized in that: comprise upper cover body and lower cover, described lower cover upper surface is provided with two slidably circular arc locking plates that are centrosymmetric and the resetting means of locking plate, described upper cover body is provided with the rotating rectangular and coded lock of stirring, describedly stir rectangular width and be less than the spacing of two locking plates and the spacing that its length is greater than two locking plates, describedly stir rectangular two ends along its length and there is arc surface, a described locking plate inwardly side is provided with projection, the lower end of described coded lock is provided with a plurality of rotatable lamellas, described rotatable lamella is provided with the groove mating with projection, described upper cover body is covered on lower cover and with it and is connected, describedly stir rectangular being placed between two locking plates, under released state, groove alignment and projection on described rotatable lamella are placed in groove, the arc-shaped edges of described locking plate aligns with lower cover outer edge, under lock-out state, unjustified and the projection of groove on described rotatable lamella withstands on rotatable lamella outer, described locking plate protrudes from lower cover outer edge.

2. a kind of anti-theft lock cover according to claim 1, it is characterized in that: described resetting means comprises spring and is located at the spring eye on locking plate, described lower cover upper surface is provided with backstay, described locking plate is provided with the location slotted hole mating with backstay, described spring eye is communicated with location slotted hole, described backstay is through location slotted hole, and described spring is placed in spring eye and one end is against on backstay, and the other end is against on spring eye inner side.

3. a kind of anti-theft lock cover according to claim 1, is characterized in that: described in stir and rectangularly by the rotating shaft through upper cover body, be connected with the handle of stirring on upper cover body upper surface.