CN205894832U - Big big tip of moment of flexure footpath prestressed concrete flange connects pole - Google Patents

Abstract

The utility model discloses a big big tip of moment of flexure footpath prestressed concrete flange connects pole, connect including prestressed concrete pole body and the flange of locating this end of body of prestressed concrete pole, the flange connects including the sleeve, set firmly on the sleeve inner wall hang the muscle circle and be used for with the stretch -draw internal tooth of tentioning head interlock, this internal reinforcing bar of prestressed concrete pole with hang muscle circle fixed connection, the stretch -draw ring flange has set firmly on the sleeve outer wall, be equipped with a plurality of through -holes that are used for installing the stretch -draw bolt on the stretch -draw ring flange. The utility model has the advantages of safe and reliable, the big tip of the big moment of flexure of the overlength footpath prestressed concrete pole that all adopted the flange to connect is facilitated the use, can be used for assembling out.

Description

Big moment of flexure big tip footpath prestressed concrete bump joint electric pole

Technical field

This utility model is related to electric power, communication shaft tower, more particularly, to a kind of big moment of flexure big tip footpath prestressed concrete flange Joint electric pole.

Background technology

For the big moment of flexure big tip footpath prestressed concrete electric pole of electric power, communication shaft tower, due to superior performance, replace Change steel tube tower, angle steel tower is widely used in 10kv, 35kv and 110kv ultra-high-tension power transmission line and communicates on shaft tower.With new One wheel electric network reconstruction upgrading, multiloop, the shaft tower of high intensity occur, and certainly will require big moment of flexure big tip footpath prestressed concrete electric pole Assembled length increases, and the longest assembled length of electric pole is up to 48m.At present, big moment of flexure big tip footpath assembling electric pole assembling joint is mostly adopted Use steel plate ring welding point, assembled length is less than also the having using flange bolt connecting joint of 18m, but be confined to central flange or Flange at bottom is that is to say, that big moment of flexure big tip footpath prestressing force assembling bar can only be assembled with a joint at present.Because of overlength bar tier pole When need larger place, and because overlength pole length is big, from great, need large-tonnage crane integral lifting, in hillside, rice field It is difficult to the place possessing requirement Deng position construction tier pole welding, large crane also is difficult to enter job site, so gives construction Bring very big inconvenience, or even can not construct, overlength assembling bar operating expenses is expensive, to big moment of flexure big tip footpath prestressing force in addition The popularization and application of concurrent bring difficulty, limit purposes, also reduce range.

Overlength assembling bar vertical rod construction, reduces mounting cost for convenience, and all assembling bar segment all use flange connecting joint And without steel plate ring welding point, first pouring basis in assembling, one section of one section of ground up docks, and is fastened with bolt.But at present Flange assembling bar can only assemble a joint, i.e. one flange of root or one, middle part flange, and two ends have bump joint simultaneously Overlength assembling bar also do not occur.The tensioning solving two ends bump joint becomes those skilled in the art urgently to apply prestressing force Need.

Utility model content

The purpose of this utility model is to solve the deficiencies in the prior art, provide a kind of safe and reliable, conveniently make With, can be used for applying prestressed big moment of flexure big tip footpath prestressed concrete bump joint electric pole to bump joint, thus being used for Assemble the big moment of flexure of the overlength big tip footpath prestressed concrete electric pole all using bump joint.

In order to achieve the above object, the technical solution of the utility model is: a kind of big moment of flexure big tip footpath prestressed concrete Bump joint electric pole, connects including prestressed concrete electric pole body with located at the flange of prestressed concrete electric pole body end Head, described bump joint includes sleeve, and described sleeve lining is installed with tendon ring and the tensioning for being engaged with tensioning head Internal tooth, the intrinsic reinforcing bar of described prestressed concrete electric pole is fixedly connected with described tendon ring, fixed on described sleeve outer wall There is tensioning ring flange, described tensioning ring flange is provided with multiple through holes for installing tensioning bolt.

Further preferred as technique scheme: to be fixedly provided with locating ring on described sleeve outer wall, described locating ring External diameter be less than described tensioning ring flange external diameter.

Further preferred as technique scheme: between described locating ring and described tensioning ring flange, to be installed with reinforcement Rib.

Further preferred as technique scheme: described tensioning internal tooth is ring-type the circumference along described sleeve lining Arrangement, described tensioning ring flange is identical with described tensioning internal tooth thickness and all located at described barrel end end.

Beneficial effect

Compared with prior art, the utility model has the advantage of:

1st, adopt tensioning ring flange, the prestressed electric wire pole of the flanged joint in two ends can be produced, that is, produce stage casing bar, Neng Gouyong In the prestressed concrete electric pole of three sections and more than three sections of overlength (＞ 18m) flange connecting joint of assembling, thus can cancel existing There is the fixed disk in tensioning equipment, simplify tension operation, time saving and energy saving.

2nd, tendon ring and tensioning internal tooth are set in sleeve, reinforcing bar is through and wears fixation through plating head on tendon ring, and tensioning internal tooth is then It is engaged with tensioning head, realize the prestressed stretch-draw of tensioning ring flange, simple and reliable for structure, easy to use.

The 3rd, tensioning bolt, tensioning bolt upper band lock-nut are worn on tensioning ring flange, tensioning finishes and sheds tensioning head, Lock-nut screws and withstands tensioning flange plates, and standing screw head withstands punching block end plate, will be in prestressed concrete electric pole Reinforcing bar apply prestressing force be transferred on punching block by tensioning ring flange, complete tension process, tensioning bolt can be fixed on punching block Optional position, easy to operate, and tensioning ring flange due to apply prestressing force be fixed on the end plate of punching block, will not during centrifugation Skimmed, safe operation.

Brief description

Fig. 1 is that the big moment of flexure of this utility model big tip footpath prestressed concrete bump joint electric pole is in knot during tensile state Structure schematic diagram.

Specific embodiment

Below with reference to Figure of description and specific embodiment, structure of the present utility model and principle are described further.

As shown in figure 1, the big moment of flexure big tip footpath prestressed concrete bump joint electric pole of the present embodiment, mix including prestressing force Coagulate soil electric pole body (in figure is not shown, obtains after casting concrete on existing punching block 1) and located at prestressed concrete electricity The bump joint of bar body end, described bump joint includes sleeve 2, described sleeve 2 inwall is installed with tendon ring 21 and For the tensioning internal tooth 22 being engaged with tensioning head 3, the described intrinsic reinforcing bar 4 of prestressed concrete electric pole and described tendon ring 21 Be fixedly connected, described sleeve 2 outer wall be installed with tensioning ring flange 23, described tensioning ring flange 23 be provided with multiple for installing The through hole of tensioning bolt 5.

Further preferred as technique scheme: on described sleeve 2 outer wall, to be fixedly provided with locating ring 24, described positioning The external diameter of ring 24 is less than the external diameter of described tensioning ring flange 23.

Further preferred as technique scheme: to be installed between described locating ring 24 and described tensioning ring flange 23 Ribs, improves structural strength.

Further preferred as technique scheme: described tensioning internal tooth 22 is for ring-type and along described sleeve 2 inwall Circumferentially, described tensioning ring flange 23 is identical with described tensioning internal tooth 22 thickness and all located at described sleeve 2 extreme ends.

The principle of the big moment of flexure of this utility model big tip footpath prestressed concrete bump joint electric pole tensioning is as follows:

1) deformed bar 4 is penetrated plating head on tendon ring 21, make deformed bar 4 and tendon ring 21 firmly hang over one Rise；

2) sleeve 2 is loaded in punching block 1 together with deformed bar 4, tensioning head 3 is engaged with tensioning internal tooth 22, Pull head 4 other end is coupled with the tensioning axle of stretch-draw jack 10 by tensioning coupling sleeve 7,

3) tensioning support 9 is arranged on jack 10, the diameter according to tensioning ring flange 23 selects spike set 91, will live Dynamic spike 8 is enclosed within spike set 91；

4) start tensioning lubricating oil pump, by regulation tensioning meter reading tensioning, after the applying prestressing force of regulation to be achieved, stop oil Pump work；

5) after voltage stabilizing, the through hole of tensioning ring flange 23 penetrates tensioning bolt 5, tensioning bolt 5 configures lock-nut 6, Tensioning bolt 5 head is withstood the end plate 11 of punching block 1, screw lock-nut 6, stretching force is transferred to by tensioning ring flange 23 On punching block 1, prevent tensioning ring flange 23 close to punching block 1 under the pulling force effect of reinforcing bar 4；

6) it is again started up oil pump, is decompressed to zero, so that tensioning head 3 is separated with tensioning internal tooth 22, remove tensioning head 4, tensioning support Frame 9 and spike set 91, stop operation of oil pump again, complete the tension process to tensioning ring flange 23.

After tensioning finishes, big moment of flexure big tip footpath prestressed concrete bump joint electric pole is through, after the steam-cured, demoulding, unscrewing locking Nut 6, is made tensioning bolt 5 be separated with punching block 1, obtains finished product.Tensioning bump joint in this utility model is in the preparation of electric pole During, produce prestressing force for tensioning, simplify stretching process, improve tensioning efficiency；After product preparation completes, then use In two sections and above electric pole connection, be assembled into overlength electric pole, facilitate overlength assembling bar vertical rod construction, greatly reduce installation fee With structure novelty is ingenious.

Specific embodiment used herein is set forth to principle of the present utility model and embodiment, above enforcement The explanation of example is only intended to help understand method of the present utility model and its core concept.The above is only of the present utility model Preferred implementation is it is noted that due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for this For the those of ordinary skill of technical field, on the premise of without departing from this utility model principle, can also make some improvement, Retouching or change are it is also possible to be combined above-mentioned technical characteristic by rights；These improve retouching, change or combine, Or the not improved design by utility model and technical scheme directly apply to other occasions, it is regarded as of the present utility model Protection domain.

Claims (4)

1. a kind of big moment of flexure big tip footpath prestressed concrete bump joint electric pole it is characterised in that: include prestressed concrete electricity Bar body and the bump joint located at prestressed concrete electric pole body end, described bump joint includes sleeve, described sleeve Tendon ring and the tensioning internal tooth for being engaged with tensioning head are installed with inwall, described prestressed concrete electric pole is intrinsic Reinforcing bar is fixedly connected with described tendon ring, and described sleeve outer wall is installed with tensioning ring flange, and described tensioning ring flange is provided with Multiple through holes for installing tensioning bolt.

2. the big tip footpath of big moment of flexure according to claim 1 prestressed concrete bump joint electric pole it is characterised in that: described Locating ring is fixedly provided with sleeve outer wall, the external diameter of described locating ring is less than the external diameter of described tensioning ring flange.

3. the big tip footpath of big moment of flexure according to claim 2 prestressed concrete bump joint electric pole it is characterised in that: described It is installed with ribs between locating ring and described tensioning ring flange.

4. the big moment of flexure big tip footpath prestressed concrete bump joint electric pole according to claim 1 or 2 or 3, its feature exists It is ring-type along described sleeve lining circumferentially in: described tensioning internal tooth, described tensioning ring flange and described tensioning internal tooth Thickness is identical and all located at described barrel end end.