Summary of the invention
The object of this invention is to provide a kind of construction method of manually setting up catenary, solve the existing construction method labour intensity that manually sets up catenary large, the manpower needing is many, the problem that productive costs is higher.
Technical scheme of the present invention is: manually set up the construction method of catenary, comprise the steps:
(1) adopt crane to be positioned on rail novel artificial pay off rack, on drum, put on paying out reel and draw drum is fixed on novel artificial pay off rack.
(2) one end of the catenary on drum is fixed on and is weighed anchor on pillar, manually promote novel artificial pay off rack mobile unwrapping wire on rail.
(3) unfolding catenary.
(4) weigh anchor.
(5) anchor that falls.
(6) according to designing requirement, catenary is fixed.
(7) reclaim drum and artificial pay off rack, place cleaning.
In the present invention, the method for described unfolding catenary is: 1. catenary emits 5 during across left and right, stops traction, with coir rope, by iron wire sleeve pulley block, catenary is suspended on bracket head; Catenary, in distraction procedure, contacts with track walker at any time; 2. catenary unfolding is to the place of weighing anchor;
In the present invention, described in the method for weighing anchor be: unwrapping wire personnel arrive after cat davit, and line walking protected personnel and the personnel that the weigh anchor falling mound of jointly weighing anchor installs, rise cast anchor between with aerophone contact, the personnel that weigh anchor pull compensating device with catenary terminal anchor fastener and are connected; Weigh anchor while needing threading, at needs threading position threading, the personnel that weigh anchor after threading are pulled to anchor post by catenary and are connected with compensating device;
In the present invention, the method of anchor of falling is: the anchor personnel that the fall anchor end compensating device that will fall is connected completely on request, and novel artificial pay off rack is carried out anchor post, starts the anchor that falls: 1. contact with the personnel of weighing anchor, after the personnel of weighing anchor are ready, the personnel's of casting anchor preparation that starts to cast anchor; 2. turnbuckle is installed, the steel wire cover of turnbuckle, chain and tackle block and moving tension pulley end are connected to rear beginning stringing, now, other anchor personnel that fall are good by falling mound pile; 3. during stringing, the anchor place that falls should get in touch by dialogue machine in time with the place of weighing anchor, and when the end falling mound height of weighing anchor equals B value, ties up admittedly on pillar bottom the end falling mound of will weighing anchor with bifilar iron wire, makes it can not continue rising; 4. continuous stringing, when the anchor end falling mound height that falls reach B+n *
△during L, stop stringing, wherein
△l is the development length of this anchor section catenary, and n is that tension pulley changes; 5. the compensating device that will cast anchor is connected with catenary simulation, and at need broken string, mark is made at place, and broken string; 6. catenary is turned one's head, and then connects with compensating device; 7. wire tensioning device loose ends, removes turnbuckle; 8. remove the fixedly iron wire of the end falling mound of weighing anchor, and two ends falling mound string is upwards lifted for several times with manpower, to overcome the friction force of each hitch point in anchor section.
In the present invention, described novel artificial pay off rack comprises underframe and is fixed on two stands on underframe, and stand is provided with paying out reel mount pad, is provided with handle on underframe, and the wheel of two groups of 1435mm standard gauges is installed on described underframe; Described wheel by being fixed on pair of bearing on underframe, the pair of tracks wheel that is arranged on the bearing post in bearing seat and is arranged on bearing post two ends forms.
During construction, artificial pay off rack is positioned on engineering line rail with crane, by drum put on be positioned on novel artificial pay off rack after paying out reel fixing, one of clue or cable is fixed on the pillar of weighing anchor, the artificial novel artificial pay off rack that promotes, because novel artificial pay off rack bottom is provided with the wheel of two pairs of 1435mm standard gauges, make novel artificial pay off rack can on rail, freely promote walking, according to in-place test, only need 4 people can promote novel artificial pay off rack at the up air line working of having walked of rail, 4 people play the effect of nurse drum simultaneously.
The present invention compared with prior art tool has the following advantages:
1, save manpower: former scheme adopts and manually pulls pickaback and set up catenary, general minimum needs 10 people's bracing wires, 2 people that still need in addition nurse drum.This programme adopts novel artificial pay off rack, and novel artificial pay off rack is placed on track, then catenary drum is placed on pay off rack, only needs 4 people can promote pay off rack stringing.After optimizing, the more former scheme bracing wire of scheme personnel reduce by 6 people, do not need in addition to nurse drum personnel 2 people, reduce altogether by 8 people, and therefore often setting up an anchor section catenary saves artificial 8 people.
2, reduced labour intensity: a general drum adds clue or cable, the 2 tons of left and right that weigh, adopt and manually pull very effort, and novel artificial pay off rack can freely promote walking on rail, time saving and energy saving.
3, improved effect: compared with prior art, often set up a dish line and approximately save time 30 minutes.
The specific embodiment
Embodiment 1
(1) construction preparation
Check the rise and fall presentation quality of anchor material therefor of catenary.
(2) shipment drum and wire-unfolding rack
1. with wheel crane, drum and novel artificial pay off rack are loaded onto to automobile.
2. respectively drum and novel artificial pay off rack are transported to job location.
(3) drum and wire-unfolding rack are installed
1. with crane, novel artificial pay off rack is hung to new line two rails
2. put on paying out reel, drum is winched on novel artificial pay off rack, the pay off rack axle casing that closes, fixes novel artificial pay off rack.
3. workmen stands firm in novel artificial pay off rack four directions, promotes novel artificial pay off rack stringing when stringing starts.
(4) unfolding catenary
1. catenary emits 5 during across left and right, stops traction, with coir rope, by iron wire sleeve pulley block, catenary is suspended on bracket head; Catenary, in distraction procedure, contacts with track walker at any time;
2. catenary, in distraction procedure, contacts with seeing drum personnel at any time by aerophone.
3. catenary unfolding is to the place of weighing anchor.
(5) weigh anchor
1. unwrapping wire personnel arrive after cat davit, and line walking protected personnel installs with the falling mounds of jointly weighing anchor such as personnel of weighing anchor.Quantity
By calculating, add to equivalent amount, rise between casting anchor and get in touch with aerophone.The personnel of the place of weighing anchor pull compensating device with catenary terminal anchor fastener and are connected.
2. weigh anchor while needing threading, needing then threading of threading position.The personnel that weigh anchor after threading are pulled to anchor post by catenary and are connected with compensating device.
(6) anchor that falls
Anchor falls: the anchor personnel that the fall anchor end compensating device that will fall is connected completely on request, and novel artificial pay off rack is carried out anchor post, starts the anchor that falls: 1. contact with the personnel of weighing anchor, and after the personnel of weighing anchor are ready, the personnel's of casting anchor preparation that starts to cast anchor; 2. turnbuckle is installed, the steel wire cover of turnbuckle, chain and tackle block and moving tension pulley end are connected to rear beginning stringing, now, other anchor personnel that fall are good by falling mound pile; 3. during stringing, the anchor place that falls should get in touch by dialogue machine in time with the place of weighing anchor, and when the end falling mound height of weighing anchor equals B value, ties up admittedly on pillar bottom the end falling mound of will weighing anchor with bifilar iron wire, makes it can not continue rising; 4. continuous stringing, when the anchor end falling mound height that falls reach B+n *
△during L, stop stringing, wherein
△l is the development length of this anchor section catenary, and n is that tension pulley changes; 5. the compensating device that will cast anchor is connected with catenary simulation, and at need broken string, mark is made at place, and broken string; 6. catenary is turned one's head, and then connects with compensating device; 7. wire tensioning device loose ends, removes turnbuckle; 8. remove the fixedly iron wire of the end falling mound of weighing anchor, and two ends falling mound string is upwards lifted for several times with manpower, to overcome the friction force of each hitch point in anchor section.
(7) fixing catenary
According to designing requirement, catenary is fixed.
(8) finish
Reclaim drum and novel artificial pay off rack, place cleaning.
operation or work standard
1. the scope of examination of stringing section has:
1. high-low voltage power line, the light current circuits such as communication, broadcast should move and change complete or change to move temporarily and do not affect stringing.
2. crutched gauge, buried depth, degree of dip all should meet technical standard, and accumbency plate is installed by designing requirement.
3. anchor slab bracing wire, compensation assembling supportive device installs, and meets technical standard.
4. warning portal fills, and pillar number is brushed or write temporarily.The bracket of curve section has been done interim reinforcing.
5. multiple line segment curve place, upper and lower two relative available double joint Φ 4.0 iron wires of pillar bracket head are strained mutually, the unsuitable tension of iron wire, bracket biasing force in the time of bearing stringing.Inside single line segment curve, pillar bracket can be installed temporary fixed angle steel reinforced.
6. steel-column foundation preserving period is enough, and intensity reaches technical standard.
7. check that pillar assembling, bracing wire have inerrancy, headspan suspension hangs to install whether meet design.
8. the guyed foundation that casts anchor perfusion intensity reaches technical standard.
2. weigh anchor
1. tension pulley rotates flexibly, and falling mound is intact, marshalling, stagger 180 degree guarantee that falling mound is not by pillar or other object clamping stagnation of breach direction.
2. falling mound quantity is added to equivalent load quantity.Method of calculating is as follows:
3. stringing
1. running velocity requires 5km/h during stringing vehicle stringing.
2. the pulley block of hanging wire should be supporting with catenary, adopts steel sheave (being special-purpose pulley block).
3. the iron wire cover that unwrapping wire is used should bifilar use.
4. catenary presentation quality standard: twisted wire do not have intersection, the phenomenon such as loose, firmly curved, folding.
5. by after track switch, whether need to lay one's hand on line temporarily, should have non junction according to contact wire in anchor section, while casting anchor, the factor such as threading is determined by operation command person.
While 6. turning one's head with wedge clamp, the later length of catenary in wedge clamp is preferably 300~500mm, is later 100 ± 10mm with the colligation length of this line.
4. anchor falls
1. falling mound pile standard and quantity with weigh anchor identical.
2. check that compensation rope is whether in pulley groove, the whether complete requirement of bracing wire, otherwise process.
3. two ends falling mound height, draws without super during as stringing, should consider that new line extends pre-allowance.
4. as while falling anchor, there isn't enough time, can make slightly built on stilts of mooring post place falling mound, guarantees catenary tension force in anchor section, processes later again.
Four, notice
1. stringing is prepared
1. the vertical distance of electric power circuit to contact system:
Voltage class distance
10kV~110kV >3m
220kV >4m
330kV >5m
2. working out air line working planning chart should need the time to enroll plan each operation, in order to grasping construction total time.And the requirement of stringing trouble free service is proposed, by enclosed point, return on time.
3. wire rod should conscientiously be checked, should be especially careful to the wire rod of easily obscuring.
4. drum should be firm, if axle sleeve is that wooden should repacking is processed into iron axle sleeve locked bobbin, prevents that in unwrapping wire, drum comes off, and clue is wound around should be regular.
5. Safety helmets must be worn to attend stringing personnel in body.
While 6. having ready conditions, weigh anchor and line walking protected personnel arrives in advance cat davit and prepares.
2. unwrapping wire
1. stringing is in service, and technician tackles the technical work of overall process and is responsible for, and through across near electric power circuit time, reminds operating personnel to notice that various items must not stretch out catenary height.
2. during stringing, the suspension height of catenary is as far as possible by designing requirement.Fall like this after saddle, compensating weight string b value rangeability will be very little.
3. in stringing process, promote the quality condition that novel artificial pay off rack workmen should note operating condition and the clue of drum at any time, note abnormalities and should require rapidly to stop, take measures.
3. anchor falls
1. the tension pulley that casts anchor should rotate flexibly, without clamping stagnation.
2. the anchor section of growing up low temperature season stringing, whether the accrued maximum lift-off value of anchor place falling mound of counting can meet design requirement.
While 3. breaking, should notice that reserved catenary turns one's head length.
4. B value is definite, and due to influenced many factors, actual change is also larger.Its value need, according to practical experience, with reference to computational data, be determined in scene.
5. in stringing process, see that line protected personnel should be paid close attention to clue and pillar is dynamic, the situation such as discovered a clue, in pulley, block or come off from pulley, circulate a notice of immediately commanding and stop stringing, and the Accident prevention of taking measures occurs, be strictly on guard against unwrapping wire, stringing, rise in the process of casting anchor and affect adjacent line train operation.
While 6. casting anchor threading, notice preventing that clue from producing firmly curved, radius of turn must not be less than drum radius.At the station that has technical transformation, during threading, stringing vehicle is as can not be, toward return, carried out threading by manual type after broken string.
7. in operation process, any facility, material, personnel must not invade adjacent line track clearance.