CN2924238Y

CN2924238Y - Anti-theft connecting device for pipeline threaded joint

Info

Publication number: CN2924238Y
Application number: CN 200620103822
Authority: CN
Inventors: 陈志清
Original assignee: NINGBO ZHIQING INDUSTRIAL Co Ltd
Current assignee: NINGBO ZHIQING INDUSTRIAL Co Ltd
Priority date: 2006-05-19
Filing date: 2006-05-19
Publication date: 2007-07-18
Anticipated expiration: 2016-05-19

Abstract

An anti-theft connecting device for pipeline threaded joint includes a nut and a joint. The lower part of the nut is an opening with a thread in it and the upper end of the nut is a shrinking opening. The joint is a tubular structure with a dummy club arranged in the lower part. The joint is arranged from the opening in the lower end of the nut and extends from the shrinking opening in the upper end. The nut is also provided with a hollow extending shoulder in the part corresponding to the dummy club of the joint and the hollow part is a positioning bolt slot with a positioning bolt arranged in. A pin slot vertically communicated with the positioning bolt slot is arranged on the upper end shoulder of the nut. Under an unerected state, the pin slot is provided with a countersunk pin which props the inner end of the positioning pin. Compared with the prior art, the utility model has the advantages of that the anti-theft connecting device improves the positioning bolt slot from a traditional direction parallel to the pipeline axis cord to a direction vertical to the pipeline axis cord through the design of the nut shoulder, which can not only make the using of the anti-theft connecting device be free from the limit of the pipeline dimension, but also make the manufacture like the positioning bolt slot, etc. more convenient.

Description

The antitheft connection set that pipeline is spirally connected mouthful

Technical field

The utility model belongs to the pipe joint connected element, the antitheft connection set that particularly a kind of pipeline is spirally connected mouthful.

Background technique

Traditional pipeline gauge table, gauge table as piped gas, water supply pipe etc. is all received on the pipeline by the mouth that is spirally connected, this is spirally connected mouthful generally and is coupled together by a nut and one section screwed connecting tube and main pipe, in default of reliable anti-theft measure, such gauge table often by some users dismantle privately, repacking etc., and this situation often is not easy to be found by the staff of relevant departments, thereby causes very big loss, also has certain potential safety hazard simultaneously.Sharp for this reason number for the Chinese utility model patent of ZL03216829.2 (notification number is CN2607558Y) " water, the antitheft connection set of gas measurement table interface " discloses a kind of energy good anti-theft effect, and the antitheft connection set of the better simply gauge table interface of structure.This device comprises that a nut and an end have the outside thread the other end that the connecting tube of bulge loop is arranged, the end face of this nut also is provided with boss, and offered a locating stud slot that upwards feeds in the boss from this nut end face inner face, in the locating stud slot locating stud is housed, on nut outer side wall upper edge or boss outer side wall, offers the not pin slot that feeds the locating stud slot in the boss again; In addition, on the connecting tube bulge loop, offer at least two locating studs and fall into breach, in the locating stud slot, have a spring to withstand locating stud, simultaneously be furnished with a not pin that inserts wherein locating stud is pinned not selling slot.After installing gauge table, extract out and Xiao not, under gravity and spring force effect, locating stud falls in the breach on the connecting tube one end bulge loop, this moment, the nut angle of swing can not be greater than 180 degree, the user can't be spirally connected and can't dismantle gauge table under the situation of mouthful coupling nut not destroying gauge table, thereby realized antitheft purpose reliably.This apparatus features is that the breach on locating stud and the connecting tube one end bulge loop moves in vertical direction, that is the locating stud direction of action becomes parastate with the axis of nut and connecting tube, but the pipeline that this device is connected to needs has size restrictions, some piping erection meetings is produced inconvenient; And the close nut internal chamber wall of locating stud slot, manufacturing acquires a certain degree of difficulty.

The model utility content

Technical problem to be solved in the utility model provides a kind of line size restriction of not being subjected to, the antitheft connection set that the convenient a kind of pipeline of fabrication and processing is spirally connected mouthful.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: the antitheft connection set that a kind of pipeline is spirally connected mouthful, comprise nut and joint, and described nut bottom is an opening of establishing screw thread in one, the upper end is a contraction opening that matches with the joint external diameter; Described joint in a tubular form, its underpart periphery has radially the lug that protrudes, joint is packed into and is shunk opening from the upper end and stretch out from the nut lower ending opening, the connector end lug just in time withstands the shoulder that opening is shunk in the nut upper end; Described nut also is provided with extension shoulder radially that protrude, hollow at the position of corresponding joints lug, the hollow portion of extension shoulder is the locating stud slot, top, one outer end is installed in it the locating stud of pre-tightening apparatus, nut upper end shoulder offer one with the vertical not pin slot that communicates of extension shoulder locating stud slot, under installment state not, described the pin is furnished with the countersunk head pin in the slot, this countersunk head pin withstands the inner of locating stud.

Pre-tightening apparatus in the described locating stud slot is a spring, and spring is inner to offset with locating stud, and the spring outer end then withstands on the outer end of locating stud slot; Described locating stud slot can be the blind hole of an outer end sealing, but the facility in order to process also can be a through hole, and is sealed by circular plug in the outer end, and at this moment, the outer end of described spring promptly withstands on this circle plug; Under the state that installs, extract the described countersunk head pin of not selling in the slot, described spring handle locating stud pushes in the draw-in groove of joint.

Described joint one end has screw thread, the draw-in groove that the other end has lug to constitute, and that the draw-in groove structure can be is square, circular, V-arrangement or other shapes, and evenly distribution, quantity are at least two.

Compared with prior art, advantage of the present utility model is the design by nut extension shoulder, the locating stud slot is improved to perpendicular to the conduit axis direction by traditional conduit axis direction that is parallel to, such design not only makes the use of antitheft connection set not limited by line size, and the manufacturing of locating stud slot etc. is also convenient.

Description of drawings

Fig. 1 is the utility model example structure schematic representation;

Fig. 2 is the utility model embodiment mounted configuration schematic representation;

Fig. 3 is that the A-A of Fig. 1 is to sectional view;

Fig. 4 is that the B-B of Fig. 2 is to sectional view;

Fig. 5 is the utility model embodiment joint plan view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1-shown in Figure 5, the antitheft connection set that a kind of pipeline is spirally connected mouthful includes nut 1 and joint 2, and the nut bottom is an opening of establishing screw thread in one, and the upper end is a contraction opening that matches with joint 2 external diameters; Joint 2 in a tubular form, an end has screw thread, the other end has six square lugs 22, and six draw-in grooves 21 that form thus; Joint 2 is packed into and is shunk opening from the upper end and stretch out from nut 1 lower ending opening, and joint 2 terminal lugs 22 just in time withstand the shoulder that opening is shunk in nut 1 upper end; Referring to Fig. 1-Fig. 5.

Nut 1 also is provided with extension shoulder 11 radially that protrude, hollow at the position of corresponding joints 2 lugs 22, the hollow portion of extension shoulder 11 is a locating stud slot 12, top, one outer end is installed in it the locating stud 3 of pre-tightening apparatus, pre-tightening apparatus is a preloading spring 4, spring 4 the inners offset with locating stud 3, and spring 4 outer ends then withstand on the circular plug 5 of the outer end of blocking the locating stud slot; Nut 1 upper end shoulder offer one with the extension shoulder 11 locating stud slots 12 vertical not pin slots 13 that communicate, under installment state not, described the pin is furnished with countersunk head pin 6 in the slot 13, this countersunk head pin 6 withstands the inner of locating stud 3, prevent that locating stud 3 does not snap in joint 2 draw-in grooves 21 before installing, the influence construction is referring to Fig. 1, Fig. 3.

During installation, nut 1 and joint 2 are extracted the countersunk head pin of not selling in the slot 13 6 after being connected and fixed with other threaded fittings earlier, and locating stud 3 to draw-in groove 21 place directions, blocks joint 2 at a following locating stud 3 bullets of the elastic force effect of spring 4; During improper dismounting, joint 2 is fixed with pipe fitting is installed, when turning nut 1, because locating stud 3 is stuck in the draw-in groove 21 of joint 2,, can not or can only in very among a small circle, rotate referring to Fig. 2 and Fig. 4, can't carry out omnidistance unscrew, turning on etc., thereby reach antitheft effect; Then can use special tool during normal the dismounting.

Claims

1, the antitheft connection set that is spirally connected mouthful of a kind of pipeline comprises nut (1) and joint (2), and it is characterized by: described nut (1) bottom is an opening of establishing screw thread in one, and the upper end is a contraction opening that matches with joint (2) external diameter; Described joint (2) in a tubular form, its underpart periphery has the lug (22) that radially protrudes, joint (2) is packed into and is shunk opening from the upper end and stretch out from nut (1) lower ending opening, and the terminal lug of joint (2) (22) just in time withstands the shoulder that opening is shunk in nut (1) upper end; Described nut (1) also is provided with extension shoulder (11) radially that protrude, hollow at the position of corresponding joints (2) lug, the hollow portion of extension shoulder (11) is locating stud slot (12), top, one outer end is installed in it the locating stud (3) of pre-tightening apparatus, nut (1) upper end shoulder offer one with the vertical not pin slot (13) that communicates of extension shoulder locating stud slot (12), under installment state not, described the pin is furnished with countersunk head pin (6) in the slot (13), this countersunk head pin (6) withstands the inner of locating stud (3).

2, the antitheft connection set that is spirally connected mouthful of pipeline according to claim 1, it is characterized in that: the pre-tightening apparatus in the described locating stud slot (12) is a preloading spring (4), spring (4) is inner to offset with locating stud, and spring (4) outer end then withstands on the outer end of locating stud slot.

3, the antitheft connection set that is spirally connected mouthful of pipeline according to claim 2, it is characterized in that: described locating stud slot is the blind hole of an outer end sealing.

4, the antitheft connection set that is spirally connected mouthful of pipeline according to claim 2, it is characterized in that: at described locating stud slot (12) is a through hole, and sealed by circular plug (5) in the outer end, and the outer end of described spring (4) promptly withstands on this circle plug (5).

5, the antitheft connection set that is spirally connected mouthful of pipeline according to claim 1, it is characterized in that: described joint (2) one ends have screw thread, the draw-in groove (21) that the other end has lug (22) to constitute, that draw-in groove (21) structure can be is square, circular, V-arrangement or other shapes, and evenly distribute, quantity is at least two.