Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Go straight up to the method that unit founds UHV transmission steel tower, comprise the following steps:
Step 1, helicopter this is gone straight up to unit stand UHV transmission steel tower tower leg section lifting be fixed on the predetermined area;
Step 2, helicopter this is gone straight up to unit stand UHV transmission steel tower tower body lifting be fixed in this tower leg section;
This is gone straight up to the both sides that this tower body is fixed in outside cross-arm lifting that unit founds UHV transmission steel tower by step 3, helicopter;
This goes straight up to UHV transmission steel tower that unit stood as shown in Figure 1.
In the present embodiment, this is gone straight up to the tower leg section that unit founds UHV transmission steel tower and contains four tower legs 41, in order to improve lifting efficiency, in step 1, tower body section (i.e. No. 24 tower body sections 24) bottom in this tower body is equally divided into and four tower legs 41, four lower tower body unit 42 one to one, four tower legs 41 and four lower tower body unit 42 (i.e. No. 24 tower body sections 24 1/4th) are made to connect one to one into four complete tower legs (40), complete tower leg 40 lifting can be fixed on the predetermined area by this helicopter at every turn like this, by repeatedly back and forth this helicopter complete the lifting of this tower leg section 26 and No. 24 tower body sections 24.Namely this helicopter is when completing lifting tower leg section 26, tower body section bottom in tower leg section 26 and this tower body can be completed lifting simultaneously.Preferably, the size and shape of each complete tower leg 40 is identical, and the weight of each complete tower leg 40 is 7 tons ~ 8 tons.
In the present embodiment, in step 1, complete tower leg 40 lifting is fixed on the predetermined area and is comprised the following steps by this helicopter:
Step 1.1, this helicopter are taken a complete tower leg 40 and are flown to this predetermined area;
Step 1.2, this helicopter are taken this complete tower leg 40 and are hovered to this overhead, predetermined area, this helicopter is commanded to decline, when this complete tower leg 40 drops to this predetermined area, the temporary guy of colligation on this complete tower leg 40 is untied, this complete tower leg 40 is pulled to ready position and tentatively connects;
Step 1.3, push-and-pull or crowbar mode is adopted to make the lower margin flange eyelet of complete tower leg 40 lower end aim at stone bolt on this predetermined area, this helicopter continues to decline, and makes complete tower leg 40 fall to penetrating this stone bolt by the outer gear guide rail that this predetermined area is arranged;
Step 1.4, complete tower leg 40 in place safe after, carry out temporary fixed to complete tower leg 40, as shown in Figure 2.
Concrete, complete tower leg 40 lifting is fixed on the predetermined area and is comprised the following steps by this helicopter:
Helicopter is flown to above the hanging piece of stock ground, and slowly drop to work clasp joint near the ground, constructor hangs hanging piece.
Step 1.1, commander's helicopter rise, and take hanging piece and fly to construction point (i.e. tower position);
Step 1.2, helicopter take hang hanging piece to overhead, tower position hovering, by ground control's helicopter falling head, to hanging piece close to base surface time, the temporary guy of colligation on hanging piece is untied by constructor, is pulled to bracing wire off-the-shelf with ground and is tentatively connected;
Step 1.3, constructor adopt push-and-pull or crowbar mode (crowbar can penetrate perforate on flange strength plate) to rotate tower leg principal post, make lower margin flange eyelet alignedly foot bolt, notify that helicopter declines by ground, flight side person in charge, the section of hanging, by the outer gear guide rail that basis is arranged, falls to penetrating stone bolt;
Step 1.4, tower leg in place safe after, temporary guy 43 fixes rapidly by constructor;
Step 1.5, helicopter disengagement work hook, return to stock ground;
Step 1.6, repeat four times by above-mentioned steps 1.1 to step 1.5, complete after 4 complete tower legs 40 lift, constructor Deng Ta completes overall package work.
The points for attention of step 1:
1, tower leg section is when stock ground is assembled, and place should be smooth.Behaviour is flat for tower section each fulcrum instrument, and ground erection bolt is fastening intact, ensures that the distortion of tower section principal post is less and conforms with the regulations.
2, this programme gives preliminary suspension centre rope length, and actual suspension centre rope length is determined by real model experiment, by test, construction operation guiding book determines that length performs.Real model experiment is taked crane to debug and is hung vertical center of gravity, determine a rope length, and checks that column foot flange stiffener is screwed into impact to nut, carries out with regard to bit test.
3, answer the good temporary guy of lay, connect tackle pulley, in order to Fast Installation bracing wire; Hand fit's operation should be trained in advance, completes tower leg lifting operation at the appointed time to meet; After 1/4 tower leg section is hung and stood, adjustment bracing wire makes central connection point outwards be reserved with 100mm ~ 200mm gap, during to avoid installing with hypomere, extension occurs and touches phenomenon.
4, during the assembling of stock ground, at the upper end installation in position guide rail of No. 24 tower body sections 24.Flange in the bottom eyelet and corresponding stone bolt will carry out obvious mark.
5, tower position construction point should draw layout plan, and arranges the putting position and the artificial each facility installed of mending material according to figure.
In the present embodiment, the tower body of this UHV transmission steel tower contains multiple tower body section, and in step 2, this helicopter lifts each tower body section successively according to being obedient to from bottom to top, and this helicopter comprises the following steps when a lifting tower body section:
Step 2.1, this helicopter are taken this tower body section and are hovered to this overhead, predetermined area, this helicopter is commanded to decline, make the limit rope of the lower end of this tower body section enclose frame and enter position to be connected upper rall, continue to fall to making this tower body section through this guide rail landing in the alignment pin on the flange at this position to be connected, make the eyelet accurate contraposition on the flange eyelet of the lower end of this tower body section and the flange at this position to be connected, as shown in Figure 3.
Concrete, in step 2, this helicopter comprises the following steps when a lifting tower body section (only to install No. 23 tower body sections 23):
Helicopter is flown to above the hanging piece of stock ground, and slowly drop to work clasp joint near the ground, constructor hangs hanging piece;
Step 2.1, the section of hanging are after construction point and overhead are flown in stock ground, slowly drop to tower leg section overhead, make the limit rope of No. 23 tower body sections 23 enclose guide rail that frame enters No. 24 tower body section 24 tops is coordinated by flight teacher and ground control, in the alignment pin of the section of hanging that falls again on the flange of guide rail landing to 24 tower body section 24, lower flange eyelet accurate contraposition in order;
Step 2.2, after ground control's suspension centre rope comes off, helicopter returns to stock ground;
Step 2.3, polishing rod member and bolt, flat mouth physical dimension in measurement, checks the section of hanging deformation;
Step 2.4, measure whole tower inclination conditions, errorless rear fastening bolt;
Step 2.5, dismounting auxiliary part and device.
Step 2.6, by above-mentioned steps 2.1 to step 2.5 repeatedly, until complete the assembly working of tower body entirety.
The points for attention of step 2:
1, the section of hanging is after the assembling of stock ground, and slinging with crane checks that whether each portion size is accurate, checks that after checking it slings, the deflection of tower section conforms with the regulations.
2, after tower section completes lifting by interior guide rail autofitting, the artificial upper timely erection bolt of tower; Timely installation loss of weight rod member, removes reinforcing bar.
3, as there is bolt hole decentraction phenomenon in tower section rear stub in place, can use to have a look at punching and penetrate the good bolt hole of concentric situation, coordinates hand hammer by artificial hammering, make tower section progressively return, then in empty bolt hole, penetrate bolt, finally extract again and have a look at punching, replace having a look at punching with bolt.
In the present embodiment, the tower body of this UHV transmission steel tower contains multiple tower body section, it is tower body section bottom in this tower body that the plurality of tower body section comprises No. 5 tower body sections 5, No. 6 tower body sections 6, No. 7 tower body sections 7, No. 8 tower body sections 8, No. 9 tower body sections 9, No. 10 tower body sections 10, No. 11 tower body sections 11, No. 12 tower body sections 12, No. 13 tower body sections 13, No. 17 tower body sections 17, No. 23 tower body sections 23 of connecting successively from the top down and No. 24 tower body sections 24, No. 24 tower body sections 24; No. 5 tower body sections 5, No. 7 tower body sections 8, No. 9 tower body sections 9, No. 10 tower body sections 10, No. 11 tower body sections 11, No. 12 tower body sections 12, No. 13 tower body sections 13, No. 17 tower body sections 17 and No. 23 tower body sections 23 adopt vertical assembled; No. 6 tower body sections 6, No. 8 tower body sections 8, complete tower leg 40 and this cross-arms adopt horizontal assembling.
Vertical assembled is introduced: when tower sheet assemble on ground, two main materials hang on chock by distribution, and auxiliary material to make inside tower sheet upward after assembling.Sling to tower section height with the two panels tower material that ground has been assembled by crane respectively during lifting, and the main material lower end of tower sheet is overlapped with the ground place of printing adjust tower material angle of inclination with tricing line control tower sheet angle of inclination, utilize the temporary ground anchor on ground that bracing wire is set tower sheet is firmly stable, the slow loose hook of crane.When noting lifting by crane, tower sheet should not leave ground.Utilize the auxiliary material in crane auxiliary installation side, after tower section has been assembled, measure the related datas such as root is opened, inclination.
Horizontal assembling is introduced: assembled on ground by side tower sheet, installs side wedge, need to set temporary guy and carry out firmly, prevent the tower section run-off the straight organized after installing wedge with crane is auxiliary.Another sheet offside tower sheet assembled on ground is sling with crane and has been organized tower section with ground and be connected.After tower section has been assembled, measure the related datas such as root is opened, inclination.
In the step 3 of the present embodiment, outside cross-arm 50 described in helicopter comprises can following steps:
Step 3.1, two hangers 51 are arranged on one to one the end to be connected of two upper main materials 52 of cross-arm 50 outside this, two hooks 53 are arranged on one to one the position to be connected, outer end of two upper steel pipes 55 of the nearside cross-arm 54 outside tower body, hanger 51 is containing the insertion rod 56 arranged in the horizontal direction, hook 53 is containing clamping groove plate 57 and V-way 58, on clamping groove plate 57 containing opening towards hook-type notch, the installation site demand fulfillment of hanger 51 and hook 53 is when insertion rod 56 to be inserted into downwards along V-way 58 in the hook-type notch of clamping groove plate 57 and to rotate cross-arm 50 outside this, outside this, the end to be connected of two of cross-arm 50 upper main materials 52 can correspondingly connect with the position to be connected, outer end of two upper steel pipes 55 of nearside cross-arm 54, as shown in Figure 4 and Figure 5,
Step 3.2, with helicopter, the outside cross-arm 50 of traverse is suspended to the top of nearside cross-arm 54, this helicopter is when suspending in midair, the end to be connected of the upper main materials 52 in two of cross-arm 50, outside is positioned at the top of the end to be connected of main material under two of outside cross-arm 50, cross-arm 50 outside this is made to decline again, until insertion rod 56 is inserted in the hook-type notch of clamping groove plate 57 downwards along V-way 58 downwards, as shown in Figure 6 and Figure 7;
Step 3.3, continue to transfer cross-arm 50 outside this, make outside cross-arm 50 with insertion rod 56 for axle rotates, connect until the end to be connected of main material is corresponding with the position to be connected, outer end of two lower steel pipes of nearside cross-arm 54 under two of outside cross-arm 50, the end to be connected of two of outside cross-arm 50 upper main materials 52 connects with the position to be connected, outer end of two upper steel pipes 55 of nearside cross-arm 54 is also corresponding simultaneously, as shown in Fig. 8 to Figure 10, then outside cross-arm 50 and nearside cross-arm 54 are bolted fixing.
Step 3.4, by above-mentioned steps 3.1 to step 3.3 repeatedly, until the assembly working completing outside cross-arm 50.
Introduce below and a kind ofly go straight up to the suspender used when unit founds UHV transmission steel tower, this suspender is the suspender 30 used in step 1, namely this helicopter lifts described tower leg by suspender 30, this suspender 30 comprises the gusset 31, shoulder pole frame 32 and the multiple Chain block 33 that connect successively from the top down, certainly, this helicopter can pass through this suspender 30 erection tower figure and outside cross-arm 50.
In the present embodiment, gusset 31 is provided with two lifting bolts 34, and the circular head of lifting bolt 34 upward.Gusset 31 is in annular.Along the circumference of gusset 31, between the inner circle and cylindrical of gusset 31, be provided with multiple through hole, the axis of this through hole and the axis being parallel of gusset 31.Lifting bolt 34 is connected and fixed by this through hole and gusset 31.On the surface of gusset 31, be provided with a stiffener between two adjacent these through holes, this stiffener is arranged along the radial direction of gusset 31.The external diameter of gusset 31 is about 1000mm, and the internal diameter of gusset 31 is about 840mm, and the weight of gusset 31 is about 100kg, and acting as of gusset 31 prevents from reversing.
In the present embodiment, connected by four bracing wires 35 between gusset 31 and shoulder pole frame 32.Gusset 31 is connected with helicopter by two lifting ropes, and the rated load of bracing wire 35 is 80kN ~ 120kN.Shoulder pole frame 32 is rectangular, and shoulder pole frame 32 is formed by connecting by four crossbeams and two cant beams, and the bottom of shoulder pole frame 32 is connected with four Chain blocks 33, and the rated load of Chain block 33 is 25kN ~ 40kN.Shoulder pole frame 32 is connected with by hanging piece by Chain block 33.
The above, be only specific embodiments of the invention, can not limit the scope that invention implements with it, so the displacement of its equivalent assemblies, or the equivalent variations done according to scope of patent protection of the present invention and modification, all still should belong to the category that this patent is contained.In addition, the technical characteristic in the present invention and all can using by independent assortment between technical characteristic, between technical characteristic and technical scheme, between technical scheme and technical scheme.