CN115448133B - Method for replacing steel wire rope - Google Patents
Method for replacing steel wire rope Download PDFInfo
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- CN115448133B CN115448133B CN202211196959.8A CN202211196959A CN115448133B CN 115448133 B CN115448133 B CN 115448133B CN 202211196959 A CN202211196959 A CN 202211196959A CN 115448133 B CN115448133 B CN 115448133B
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- rope
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 219
- 239000010959 steel Substances 0.000 title claims abstract description 219
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims description 18
- 239000003245 coal Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 8
- 239000002817 coal dust Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
- B66B19/02—Installing or exchanging ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/02—Rope or cable carriers
- B66B15/06—Drums
Abstract
The application provides a method for replacing a steel wire rope, which is used for replacing the steel wire rope on a vertical single rope winding type double-roller elevator, and comprises the following steps of S1, determining the sectional length and the total length of a main steel wire rope and determining the sectional length and the total length of an auxiliary steel wire rope; step S2, fixing an auxiliary skip through a supporting beam device according to the total length of the auxiliary steel wire rope determined in the step S1, replacing the auxiliary steel wire rope in a mode that an old rope leads a new rope, and carrying out auxiliary rope adjusting operation after the replacement operation of the auxiliary steel wire rope is completed; and S3, fixing the main skip through the supporting beam device according to the total length of the main steel wire rope determined in the step S1, replacing the main steel wire rope in a mode that an old rope guides a new rope, and performing main rope adjusting operation after the replacement operation of the main steel wire rope is completed. The application solves the problems of more problems of the replacement method of the main hoisting steel wire rope and the auxiliary hoisting steel wire rope in the prior art, and the problems of time delay, waste of ropes and influence on safe production are easy to cause.
Description
Technical Field
The application relates to the technical field of miner engineering, in particular to a method for replacing a steel wire rope.
Background
The vertical shaft single rope winding type double-roller elevator comprises a main hoisting steel wire rope and an auxiliary hoisting steel wire rope, wherein the main hoisting steel wire rope is wound on a main roller, namely a fixed roller, of the elevator, and the auxiliary hoisting steel wire rope is wound on an auxiliary roller, namely a movable roller.
In the prior art, when the main hoisting steel wire rope and the auxiliary hoisting steel wire rope are replaced, the problems that the parking positions of the main skip bucket and the auxiliary skip bucket are unreasonable, the number of winding turns of the steel wire rope on the drum and the corresponding positions of the depth indicator are not marked and recorded in time and the like are caused, the winding quantity of the steel wire rope on the drum after rope replacement is insufficient or the winding quantity of the drum is too full, the steel wire rope is scrapped or re-chopped once again, a great amount of time is delayed, the steel wire rope is wasted, and if the operation method is improper, a rope sliding skip bucket falling accident can occur, and the production safety is influenced.
Disclosure of Invention
The application mainly aims to provide a method for replacing a steel wire rope, which solves the problems that the main hoisting steel wire rope and the auxiliary hoisting steel wire rope in the prior art have more problems, are easy to cause time delay and waste of ropes and influence production safety.
In order to achieve the above object, according to one aspect of the present application, there is provided a wire rope replacement method for replacing a wire rope on a vertical single rope winding type double drum hoist, the replacement method including the steps of S1, determining a sectional length and an overall length of a main wire rope, fixing a secondary skip by a girder device, and determining a sectional length and an overall length of a secondary wire rope; step S2, replacing the auxiliary steel wire rope in a mode of leading a new rope from an old rope according to the total length of the auxiliary steel wire rope determined in the step S1, and carrying out auxiliary rope adjusting operation after the replacement operation of the auxiliary steel wire rope is completed; and S3, according to the total length of the main steel wire rope determined in the step S1, fixing a main skip through a supporting beam device, replacing the main steel wire rope in a mode that an old rope guides a new rope, and performing main rope adjusting operation after the replacement operation of the main steel wire rope is completed.
Further, in step S1, the determination of the segmented length and the total length of the primary wire rope is consistent with the method of determining the segmented length and the total length of the secondary wire rope.
Further, in step S1, determining the segmented length of the primary wire rope includes the overhang length Hc of the primary wire rope and the chord length Lx1 of the primary wire rope, and determining the segmented length of the secondary wire rope includes the overhang length Hc of the secondary wire rope and the chord length Lx2 of the secondary wire rope.
Further, in step S1, the overhang length Hc is obtained according to a first calculation formula hc=hj+hs+hz, where Hj is the height of the wellhead, units m, hs is the depth of the mine, units m, hz is the loading height, units m.
Further, when the object to be lifted is a skip, the derrick height Hj satisfies: hj is less than or equal to 30m and less than or equal to 35m, and the loading height Hz meets the following conditions: hz is not equal to 0, and Hz is not less than 18m and not more than 25m; when the object to be lifted is a cage, the derrick height Hj satisfies: hj is less than or equal to 15m and less than or equal to 25m, and the loading height Hz meets the following conditions: hz=0.
Further, the derrick height Hj is obtained according to a second calculation formula hj=hx+hr+hg+0.75rt, where Hx is the unloading height, hr is the height of the object to be lifted itself, m is the overwinding height, hg is the radius of the crown block, and Rt is m is the radius of the crown block.
Further, in step S1, the chord length L of the main rope x1 Comprises, according to a third calculation formulaDerived, wherein alpha 1 The method comprises the steps that when lifting starts, a roller wound with a main steel wire rope in the double rollers is at a maximum external deflection angle formed by the main steel wire rope, B is the axial width of the roller wound with the main steel wire rope, S is the center distance between two crown wheels, a is the interval distance between the two rollers, d is the diameter of the main steel wire rope, and epsilon is the gap between two adjacent steel wires of the main steel wire rope; wherein alpha is 1 Maximum allowable value alpha of (2) 1·max 1 DEG 30', alpha is calculated 1 Substituting 1 DEG 30' into the third calculation formula to obtain the minimum chord length L ' of the main steel wire rope ' x·min And L' x·min The method meets the following conditions: />And L' x·min < 60m, give L x1 ＝L″ x·min 。
Further, in step S1, the method for calculating the chord length Lx2 of the secondary wire rope includes, according to a fourth calculation formulaDerived, wherein alpha 2 Is the maximum internal deflection angle formed by the auxiliary steel wire rope when the lifting starts for the roller wound with the auxiliary steel wire rope in the double rollers, B 2 For the axial width of the drum around which the secondary wire rope is wound S 2 Is the center distance between two crown wheels, a 2 Is the distance between two rollers, d 2 Is the diameter epsilon of the auxiliary steel wire rope 2 Is the gap between two adjacent steel wires of the auxiliary steel wire rope, H is the lifting height, D is the diameter of a roller wound with the auxiliary steel wire rope, 30 is the test length of the auxiliary steel wire rope, the unit m,3 is the friction number of turns, and->When the lifting of the roller around which the auxiliary steel wire rope is wound is finished, the width of the outer peripheral surface of the position where the auxiliary steel wire rope is not wound on the outer peripheral surface of the roller in the axial direction of the roller; wherein alpha is 2 Maximum allowable value alpha of (2) 2·max Substituting α2=1° 30 'into the fourth calculation formula to obtain the minimum chord length L' of the auxiliary steel wire rope of 1 degree 30 x·min And L x·min The method meets the following conditions: /> And L' x·min < 60m, give L x2 ＝L″ x·min 。
Further, one of the two rollers is a main roller, the other of the two rollers is a secondary roller, wherein the main wire rope is wound on the main roller, the secondary wire rope is wound on the secondary roller, the main roller is a fixed roller, and the secondary roller is a movable roller.
Further, in the step S2, the replacing method of the secondary wire rope includes the steps of S20, placing the new secondary wire rope reel on the secondary wire rope bracket facing the direction of the secondary skip outside the winch house in advance, and simultaneously, recovering the old secondary wire rope reel and placing the old secondary wire rope reel in the direction of the rope outlet of the secondary drum, wherein the direction of the rope outlet of the secondary drum is inclined outside the winch house, so that the distance between the old secondary wire rope reel and the new wire rope reel is not less than 3m; step S21, cleaning residual coal dust in the main skip and the auxiliary skip, cleaning floating coal at the unloading position and the wellhead platform, and fixing the auxiliary skip through a supporting beam device after cleaning operation; s22, counting the number of turns N1 of the winding main steel wire rope on the main roller, marking the position of the main skip on the corresponding depth indicator, counting the number of turns N2 of the winding auxiliary steel wire rope on the auxiliary roller, and marking the position of the auxiliary skip on the corresponding depth indicator; step S23, taking out the wedge-shaped ring of the old auxiliary steel wire rope, cutting off the old auxiliary steel wire rope for overlapping the new auxiliary steel wire rope, simultaneously opening a clutch of a hoist and locking a car to lift a main skip upwards to a preset length away from a loading position, closing the clutch and opening a mechanical lock of the hoist, slowly starting, lowering the main skip to the position where the loading device is located, slowly starting to bring the new auxiliary steel wire rope into a winch room through a crown block, then releasing the connection relation between the new auxiliary steel wire rope and the old auxiliary steel wire rope, and temporarily fixing the new auxiliary steel wire rope; step S24, removing the old auxiliary steel wire rope on the auxiliary roller; step S25, after all old auxiliary steel wire ropes on the auxiliary roller are withdrawn, replacing new auxiliary steel wire ropes on the auxiliary roller; and S26, lifting the auxiliary skip to a preset height, and extracting the supporting beam and the five plates to finish the replacement of the auxiliary steel wire rope.
Further, in step S3, the method for replacing the main wire rope includes the steps of S30, placing a new main wire rope reel on a main wire rope bracket facing the main skip outside the winch house in advance, and simultaneously, recovering an old main wire rope reel and placing the old main wire rope reel in a direction inclined outside the winch house towards the rope outlet of the main drum so that the distance between the old main wire rope reel and the new wire rope reel is not less than 3m; step S31, cleaning residual coal dust in the main skip and the auxiliary skip, cleaning floating coal at the unloading position and the wellhead platform, lowering the auxiliary skip to a normal loading position after cleaning operation is completed, and opening a clutch of a hoist after the auxiliary skip is stopped so as to lock the auxiliary roller car; step S32, after locking the auxiliary roller car, fixing the main skip through a supporting beam device; step S33, counting the number of turns N1 of the main steel wire rope wound on the main roller, and marking the position of the main skip on the corresponding depth indicator; step S34, taking out the wedge-shaped ring of the old main steel wire rope, cutting off the old main steel wire rope for lap joint of the new main steel wire rope, and simultaneously, driving slowly to bring the new main steel wire rope into a winch room through an crown block, and releasing the connection relationship between the new main steel wire rope and the old main steel wire rope to temporarily fix the new main steel wire rope; step S35, removing the old main steel wire rope on the main roller; step S36, after all old main steel wire ropes on the main roller are withdrawn, replacing new main steel wire ropes on the main roller; and S37, lifting the main skip to a preset height, and withdrawing the supporting beam and the five plates to finish the replacement of the main steel wire rope.
By applying the technical scheme of the application, the sectional length and the total length of the main steel wire rope and the auxiliary steel wire rope are calculated, so that the lengths of all parts of the steel wire ropes are accurately calculated, the main steel wire rope and the auxiliary steel wire rope with the corresponding lengths are measured according to the calculation result, the risk that the steel wire rope cannot be used due to the problems of identification, recording and the like in the replacement process is reduced, the time and the material are saved, the main steel wire rope is wound on the main roller, the auxiliary steel wire rope is wound on the auxiliary roller, the main roller is a fixed roller, the auxiliary roller is a movable roller, and in order to reduce the replacement difficulty of the steel wire rope, the auxiliary steel wire rope is replaced firstly in a mode of leading a new rope through an old rope, the auxiliary rope is replaced, the main steel wire rope is replaced, the main rope is regulated, the risk of a rope sliding skip is reduced, and the safety is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic diagram of the relative positions of equipment materials during a wire rope change according to an alternative embodiment of the application;
FIG. 2 shows a schematic view of the wrap-around twin drum lifting system of FIG. 1;
FIG. 3 is a graph showing the length parameter relationship of each section of the wire rope of FIG. 1;
FIG. 4 shows a schematic view of the catenary length of the wire rope of FIG. 3;
FIG. 5 shows a schematic view of the beam assembly of FIG. 1;
FIG. 6 shows a schematic view of the beam assembly of FIG. 5, disassembled;
FIG. 7 shows a schematic flow chart of the rope ends of the knotted steel rope;
FIG. 8 shows a diagram of the new and old wire rope lap joint fixation;
fig. 9 shows a flow chart of a method of replacing a wire rope.
Wherein the above figures include the following reference numerals:
10. a main wire rope; 20. an auxiliary wire rope; 30. a skip; 31. a main skip; 32. an auxiliary skip; 40. a roller; 41. a main drum; 42. a sub-drum; 50. a head sheave; 60. a wire rope reel; 70. a wire rope bracket; 80. a beam supporting device; 100. a wellhead platform; 81. a left slideway; 82. a right slideway; 83. a skip cross beam; 84. a limiting block; 85. wedge ring pin; 86. bolt holes; 87. a raceway surface; 11. old steel wire rope section; 12. a new wire rope portion; 13. a wire rope clip;
1. a derrick; 2. a derrick diagonal bracing; 3. a hoist; 5. unloading the curved track; 6. a ground coal bin; 8. a car dumper; 9. a coal bin at the bottom of the well; 14. a loading device; 15. a wellhead locking disc; 16. and (5) a coal feeder.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The application provides a method for replacing a steel wire rope, which aims to solve the problems that the replacement method of a main hoisting steel wire rope and an auxiliary hoisting steel wire rope in the prior art has more problems, is easy to cause time delay and waste of ropes and affects safe production.
As shown in fig. 1 to 9, the wire rope replacement method for replacing the wire rope on the vertical single rope winding type double drum hoist 3 includes the steps of S1, determining the sectional length and total length of the main wire rope 10, fixing the auxiliary skip 32 through the girder means 80, and determining the sectional length and total length of the auxiliary wire rope 20; step S2, replacing the auxiliary steel wire rope 20 in a mode of leading a new rope from an old rope according to the total length of the auxiliary steel wire rope 20 determined in the step S1, and carrying out auxiliary rope adjusting operation after the replacement operation of the auxiliary steel wire rope 20 is completed; step S3, according to the total length of the main steel wire rope 10 determined in step S1, fixing the main skip 31 through the supporting beam device 80, replacing the main steel wire rope 10 in a mode of leading a new rope by an old rope, and carrying out main rope adjusting operation after the replacement operation of the main steel wire rope 10 is completed.
By applying the technical scheme of the application, the sectional length and the total length of the main steel wire rope and the auxiliary steel wire rope are calculated, so that the lengths of all parts of the steel wire ropes are accurately calculated, the main steel wire rope and the auxiliary steel wire rope with the corresponding lengths are measured according to the calculation result, the risk that the steel wire rope cannot be used due to the problems of identification, recording and the like in the replacement process is reduced, the time and materials are saved, the main steel wire rope 10 is wound on the main roller 41, the auxiliary steel wire rope 20 is wound on the auxiliary roller 42, the main roller 41 is a fixed roller, the auxiliary roller 42 is a movable roller, the auxiliary steel wire rope 20 is replaced firstly in a mode of leading a new rope through an old rope, the auxiliary rope regulating operation is carried out, the main steel wire rope 10 is replaced, the main rope regulating operation is carried out, the risk of a rope sliding hopper is reduced, and the safety is improved.
Specifically, in step S1, the determination of the segmented length and the total length of the primary wire rope 10 coincides with the method of determining the segmented length and the total length of the secondary wire rope 20. Therefore, the lengths of all parts of the lifting steel wire rope are calculated through actual measurement verification, the sectional length and the total length of the lifting steel wire rope are obtained, the purchasing and replacing plans of the lifting steel wire rope are convenient to accurately formulate, waste is avoided, and cost is reduced.
In the present application, as shown in fig. 3, determining the segmented length of the main wire rope 10 in step S1 includes the overhang length Hc of the main wire rope 10 and the chord length L of the main wire rope 10 x1 Determining the segmented length of the secondary wire rope 20 includes the overhang length Hc of the secondary wire rope 20 and the chord length L of the secondary wire rope 20 x2 。
As shown in fig. 4, in step S1, the overhang length Hc is obtained according to a first calculation formula hc=hj+hs+hz, where Hj is the height of the wellhead, units m, hs is the depth of the mine, units m, hz is the loading height, and units m.
In the present application, the derrick height is the distance from the ground to the center line of the crown block 50.
Further, when the object to be lifted is the skip 30, the derrick height Hj satisfies: hj is less than or equal to 30m and less than or equal to 35m, and the loading height Hz meets the following conditions: hz is not equal to 0, and Hz is not less than 18m and not more than 25m; when the object to be lifted is a cage, the derrick height Hj satisfies: hj is less than or equal to 15m and less than or equal to 25m, and the loading height Hz meets the following conditions: hz=0.
In the present application, the object to be lifted, that is, the container, includes the skip 30 and the cage.
As shown in fig. 3, the derrick height Hj is obtained according to a second calculation formula hj=hx+hr+hg+0.75rt, where Hx is the unloading height, hr is the height of the object to be lifted itself, m is the overwinding height, hg is the radius of the head sheave, and Rt is m.
In the present application, hr is the full height of the container, rt is the radius of the head sheave, and 0.75Rt is an additional distance from the contact point of the rope end of the object to be lifted and the rim of the head sheave 50 to the center of the head sheave 50, which can be found from the specification of the container.
In the present application, in step S1, the chord length L of the main rope 10 x1 Comprises, according to a third calculation formulaDerived, wherein alpha 1 The maximum outer deflection angle formed by the main wire rope 10 when lifting starts is given to the roller 40 wound with the main wire rope 10 in the double rollers, B is the axial width of the roller 40 wound with the main wire rope 10, S is the center distance between the two head pulleys 50, a is the interval distance between the two rollers 40, d is the diameter of the main wire rope 10, epsilon is the gap between the two adjacent wires of the main wire rope 10; wherein alpha is 1 Maximum allowable value alpha of (2) 1·max 1 DEG 30', alpha is calculated 1 Substituting =1° 30 'into the third calculation formula to obtain the minimum chord length of the main wire rope 10 as L' x·min And L' x·min The method meets the following conditions: />And L' x·min < 60m, give L x1 ＝L′ x·min 。
Specifically, in step S1, the chord length L of the secondary wire rope 20 x2 Comprises, according to a fourth calculation formulaDerived, wherein alpha 2 The maximum internal deflection angle formed by the auxiliary steel wire rope 20 when the lifting starts is the roller 40 wound with the auxiliary steel wire rope 20 in the double rollers 2 For the axial width of the drum 40 around which the secondary wire rope 20 is wound, S 2 A is the center distance between the two head sheave 50 2 Is the distance d between the two rollers 40 2 For the diameter of the secondary wire rope 20 epsilon 2 Is the gap between two adjacent wires of the secondary wire rope 20, H is the lifting height, D is the diameter of the drum 40 around which the secondary wire rope 20 is wound, 30 is the test length of the secondary wire rope 20, unit m,3 is the number of friction turns,at the end of lifting of the drum 40 around which the secondary wire rope 20 is wound, the outer circumferential surface of the drum 40 is not wide in the axial direction of the drum 40 around which the secondary wire rope 20 is woundA degree; wherein alpha is 2 Is 1 deg. 30', and substituting α2=1 deg. 30' into the fourth calculation formula to obtain the minimum chord length of the secondary wire rope 20 as L "" x·min And L x·min The method meets the following conditions:and L' x·min < 60m, give L x2 ＝L″ x·min 。
As shown in fig. 3, in the present application, the chord length and the deflection angle are changed and restricted to each other during the lifting process, in order to prevent the wire rope from jumping out of the rim of the head sheave 50 during operation, the chord length Lx should not be too large, and when the chord length Lx is too large, the vibration amplitude of the wire rope is also increased, so that the chord length Lx is limited to be within 60m, and the chord lengths of the upper and lower wire ropes are not equal, but in the calculation, the distance from the center of the drum 40 to the center of the head sheave 50 is approximately regarded as the chord length.
As shown in fig. 3, when the right hook lift is about to begin, the right hook wire rope forms a maximum outer deflection angle α 1 Left hook wire rope shape maximum internal deflection angle alpha 2 When the left hook is lifted to be started, the left hook steel wire rope forms a maximum external deflection angle alpha 1 The right hook forms the maximum internal deflection angle alpha 2 。
In the application, too large deflection angle will increase the abrasion between the steel wire rope and the rim of the head sheave 50, reduce the service life of the steel wire rope, and may cause rope breakage accident when serious. Thus, the coal mine safety regulations prescribe that the internal and external deflection angles should be less than 1 degree 30', L ' is selected ' x·min And L' x·min The maximum value of the (b) is set as the minimum chord length, and if the obtained chord length is not more than 60m, the set deflection angle and the chord length are reasonable; if the chord length exceeds 60m, if epsilon is too small to cause the chord length to be too large only due to rope biting, epsilon can be increased appropriately or other measures can be taken according to specific situations to reduce the chord length, and for the double-layer or multi-layer winding elevator 3, the rope biting problem is not considered any more because the abrasion of the steel wire rope is aggravated between the layers, and the calculation formula of L' x.min is as follows:
as shown in fig. 3, ls is the distance from the lifting center line of the shaft to the center line of the drum, and the calculation formula is as follows:wherein C is 0 For the height from the central line of the winding drum to the wellhead level, generally taking 1.5-2m, for a mine needing to install a derrick diagonal strut 2 between a shaft and a hoist 3 room, the inspection formula of the L value is L s·min ＝0.6H j +D+3.5。
Further, the derrick diagonal bracing 2 is arranged between the hoisting machine 3 and the shaft, the upper part of the derrick diagonal bracing is connected with the upper end of the derrick 1, and the lower part of the derrick diagonal bracing is fixed with the foundation seat and is used for counteracting the inclined force of the steel wire rope during hoisting.
In the present application, one of the two drums 40 is a main drum 41, the other of the two drums 40 is a sub drum 42, wherein the main wire rope 10 is wound around the main drum 41, and the sub wire rope 20 is wound around the sub drum 42, wherein the main drum 41 is a fixed drum 40, and the sub drum 42 is a movable drum.
In the present application, two aspects are considered according to the regulations of the safety regulations of coal mine: (1) The fourth hundred nineteen winding 2 or more layers of wire drums 40 must meet the following requirements "(three) the critical section of the wire going from the lower layer to the upper layer (corresponding to the 1/4 length of the loop) must be checked frequently and the wire moved by 1/4 of the loop position every quarter. The existing elevator 3 without rope groove liner can be continuously used as long as rope grooves are carved on the roller 40 or 1 layer of steel wire rope is used as a bottom rope. "(2) the fourth hundred twenty (three)" drums 40 should be wrapped with 3 turns of rope to ease the tension at the fixing place, and also have to be left with periodic inspection ropes. "
Specifically, in step S2, the method for replacing the secondary wire rope 20 includes the steps of S20, placing a new secondary wire rope reel on the secondary wire rope bracket 70 facing the direction of the secondary skip 32 outside the winch house in advance, and simultaneously, recovering and placing an old secondary wire rope reel in the direction of the rope outlet of the secondary drum 42, which is inclined outside the winch house, so that the distance between the old secondary wire rope reel and the new wire rope reel 60 is not less than 3m; step S21, cleaning residual coal dust in the main skip 31 and the auxiliary skip 32, cleaning floating coal at the unloading position and the wellhead platform 100, and fixing the auxiliary skip 32 through the supporting beam device 80 after cleaning operation is completed; step S22, winding the main steel wire rope 10 on the main roller 41 for a circle number N1, marking the position of the main skip 31 on the corresponding depth indicator, winding the auxiliary steel wire rope 20 on the auxiliary roller 42 for a circle number N2, and marking the position of the auxiliary skip 32 on the corresponding depth indicator; step S23, taking out the wedge-shaped ring of the old auxiliary steel wire rope 20, cutting off the old auxiliary steel wire rope 20 for overlapping the new auxiliary steel wire rope 20, simultaneously opening a clutch of the hoisting machine 3 and locking a car to lift the main skip 31 upwards to a preset length from a loading position, closing the clutch and opening a mechanical lock of the hoisting machine 3, slowly starting, lowering the main skip 31 to the position where the loading device is located, slowly starting to bring the new auxiliary steel wire rope 20 into a winch room through the head sheave 50, and then releasing the connection relation between the new auxiliary steel wire rope 20 and the old auxiliary steel wire rope 20 to temporarily fix the new auxiliary steel wire rope 20; step S24, removing the old auxiliary steel wire rope 20 on the auxiliary roller 42; step S25, after all the old auxiliary steel wire ropes 20 on the auxiliary drum 42 are withdrawn, the auxiliary drum 42 is replaced by a new auxiliary steel wire rope 20; in step S26, the auxiliary skip 32 is lifted by a predetermined height, and the girder device 80 and the fifth plate 90 are pulled out to complete the replacement of the auxiliary wire rope 20.
In the present application, in step 22, when the position of the sub skip 32 is marked, the color of the mark is different from the original depth indicator mark. As shown in fig. 5, the arm beam device 80 has a stopper 84, which plays a role of locking the skip 30, the skip beam 83 has a wedge ring pin 85, which is convenient to connect with the skip 30, two slides, i.e., a left slide 81 and a right slide 82, are fixed under the skip beam 83 for sliding the arm beam device 80, and the slides have bolt holes 86 and slide faces 87.
As shown in fig. 5 and 6, bolt holes 86 are drilled above the left slide 81 and the right slide 82 of the stretcher device 80, and are respectively connected with the skip beam 83 by bolts, and the left slide 81 and the right slide 82 are symmetrically arranged.
As shown in fig. 1, the upper bottom surface of the girder device 80 slides to a position where the skip beam 83 contacts the stopper 84 through the left slide 81 and the right slide 82, and at this time, the girder device 80 is positioned at a position where the girder device intersects the skip beam 83 and both sides have equal lengths.
In step 23, the old auxiliary rope 20 is taken out and cut off, in the process, the auxiliary rope 20 is loosened properly by opening the winch, the wedge-shaped connector pin shaft of the auxiliary skip 32 is taken out, the auxiliary rope 20 is pulled to a proper position outside the wellhead, the pulling length is suitable for the auxiliary rope 20 not to rebound, a cut position is selected above the wedge-shaped ring, steel wires are applied to two sides of the cut for binding before cutting, so that the steel wire is ensured not to loosen, the steel wire is cut off, and the new rope and the old rope are connected by two rope clamps.
As shown in fig. 7, a flow diagram of the rope ends of the binding steel wire rope is shown, wherein reference numerals 1-4 in the diagram are sequentially schematic diagrams of positions and sequences of the binding steel wire rope, and the number of the binding steel wires is 3 when the binding steel wire rope is used for a hemp core steel wire rope; the number of steel cores is 4.
Fig. 8 is a schematic diagram showing the fixing of the overlapping part of the new and old steel wire ropes.
The specification of the binding steel wire can be selected according to the diameter of the steel wire rope, and the following table is provided:
| diameter of wire rope (mm) | ≤6 | 7-18 | 19-27 | 28-32 | ≥33 |
| Steel wire for binding (number) | 26 | 18 | 14 | 12 | 10 |
As shown in fig. 8, when the wire rope clamps 13 are used, the clamp seat is buckled on a new wire rope section 12 of the wire rope, the U-shaped bolt is buckled on the tail section of the old wire rope 11, the wire rope clamps 13 are not arranged alternately on the wire rope, the distance between the two wire rope clamps 13 is 6-7 times of the diameter of the wire rope, the diameter of the tail section wire rope is flattened about 1/3 when the wire rope clamps 13 are screwed down, and the wire rope is screwed down once again after being stressed.
In the present application, in step S23, the lifting length of the main skip 31 is calculated according to the height from the auxiliary skip 32 to the unloading position of the derrick 1, the distance from the head sheave 50 to the drum 40 of the hoist 3, and the length of 2 rings of wire ropes on the drum 40; in step S24, in the process of removing the old secondary wire rope 20 on the secondary drum 42, the primary skip 31 is lifted upwards, the secondary drum starts to withdraw the secondary wire rope 20, when the secondary drum withdraws the secondary wire rope 20, the winch releases the secondary wire rope 20 at a speed of 0.3 m/S, the winch is manually pulled out from the rope outlet to the outside of the winch house to fix an empty wire rope reel 60 and a wire rope bracket 70, the old wire rope is pulled onto the empty wire rope reel 60 until the primary skip 31 is lifted to the unloading curve 5 position of the derrick 1, the old wire rope on the secondary drum 42 still has excessive wire rope, and at this time, the number of the residual wire rope loops on the secondary drum 42 needs to be recorded, and the length of the residual wire rope is calculated according to the drum diameter and the thickness of the wood lining or the plastic lining.
In the present application, in the process of exiting all the old secondary wire ropes 20 in step S25, the clutch is first re-opened and locked, the main skip 31 is lowered to a corresponding length and number of turns, the fixed portion of the old secondary wire rope 20 on the secondary drum 42 is removed, then the clutch is closed and unlocked, the main skip 31 is lifted up to the position of the unloading curve 5, and all the remaining ropes of the secondary drum 42 are exited; in the process of replacing a new auxiliary steel wire rope 20 by the auxiliary drum 42, one end of the new auxiliary steel wire rope 20 is fixed on a rope clamping device of the auxiliary drum 42, then the main skip 31 is gradually lowered to a loading level, namely the position of the loading device 14, meanwhile, the number of turns of the new auxiliary steel wire rope 20 wound by the auxiliary drum 42 is X2, the difference between the number of turns of the new auxiliary steel wire rope 20 wound by the auxiliary drum 42 and the number of turns of the new auxiliary steel wire rope 20 to be lowered by the auxiliary drum 42 is N2-X2, a clutch is opened and a car is locked, the main skip 31 is lifted up (N2-X2) by the position of the loading device 14, the clutch is closed and unlocked, the main skip 31 is gradually lowered, when the new auxiliary steel wire rope 20 is coiled on the auxiliary drum 42, a person has to stand on the side surface of the steel wire rope, the steel wire rope is lightly knocked by a hammer, after the new auxiliary steel wire rope 20 wound by the auxiliary drum 42, the number of turns of the new auxiliary steel wire rope 20 is required, the cut of the new auxiliary steel wire rope 20 is good, the cut of the rope is good, and the wire rope is cut off from the wedge-shaped skip 30 by the corresponding iron wire rope at two sides of the cut; in step 26, the lifting height of the secondary skip 32 is about 500 mm.
In the present application, after the auxiliary skip 32 is lifted to the normal unloading position, the indication position of the auxiliary skip 32 of the depth indicator coincides with the original identification position, the transmission bevel gear can be disengaged, the transmission screw is adjusted, after the transmission bevel gear is reset, the vehicle is locked, then the clutch is opened, the main skip 31 is adjusted to the loading position, after the rope is completed, the clutch is closed, the mechanical lock is opened, and the test is performed.
Specifically, in step S3, the method for replacing the main wire rope 10 includes the steps of S30, placing a new main wire rope reel on the main wire rope 10 bracket facing the main skip 31 outside the winch house in advance, and simultaneously, recovering and placing an old main wire rope reel in a direction inclined toward the rope outlet of the main drum 41 outside the winch house so that the distance between the old main wire rope reel and the new wire rope reel 60 is not less than 3m; step S31, cleaning residual coal dust in the main skip 31 and the auxiliary skip 32, cleaning floating coal at the unloading position and the wellhead platform 100, lowering the auxiliary skip 32 to a normal loading position after cleaning operation is completed, and opening a clutch of the lifting machine 3 after the auxiliary skip 32 is stopped so as to lock the auxiliary roller car; step S32, after locking the auxiliary roller car, fixing the main skip 31 through the supporting beam device 80; step S33, counting the number of turns N1 of the main steel wire rope 10 wound on the main roller 41, and marking the position of the main skip 31 on the corresponding depth indicator; step S34, taking out the wedge-shaped ring of the old main steel wire rope 10, cutting off the old main steel wire rope 10 for overlapping the new main steel wire rope 10, and simultaneously, driving slowly to bring the new main steel wire rope 10 into a winch room through the head sheave 50, and releasing the connection relationship between the new main steel wire rope 10 and the old main steel wire rope 10, so as to temporarily fix the new main steel wire rope 10; step S35, removing the old main wire rope 10 on the main drum 41; step S36, after all the old main steel wire ropes 10 on the main drum 41 are withdrawn, the main drum 41 is replaced with new main steel wire ropes 10; step S37, the main skip 31 is lifted to a preset height, and the girder device 80 and the five plates 90 are pulled out to complete the replacement of the main steel wire rope 10.
In the application, in step S32, in the fixing process of the main skip 31, the main skip 31 is first lowered to the position of the wellhead locking plate 15, the skip body is 500mm out of the wellhead locking plate 15, the left and right skids penetrate into the girder device 80 from the skip beam 83 of the main skip 31, then slowly lowered, the auxiliary skip 32 is lowered onto the girder device 80 and the wellhead locking plate 15, the auxiliary skip 32 locking plate is closed by the five plates, and the i-steel and the five plates must be put into practice; in step S34, the winch is opened to properly loosen the main steel wire rope 10, the pin shaft of the wedge-shaped connector of the main skip 31 is taken out, the wedge-shaped ring of the main steel wire rope 10 is pulled to a proper position outside the wellhead, the pulling length is suitable for preventing the auxiliary steel wire rope 20 from rebounding, a kerf position is selected above the wedge-shaped ring, and steel wires are applied to two sides of the kerf for binding before cutting, so that the wire rope ends are prevented from loosening; in step S35, the old main wire rope 10 on the main drum 41 is removed; when the main drum rope is withdrawn, the winch releases the main wire rope 10 at the speed of 0.3 m/s, the winch is manually pulled out from the rope outlet to the outside of the winch house to fix an empty wire rope disc 60 and a wire rope bracket 70, the old main wire rope 10 is coiled on the empty wire rope disc 60, and the rope is coiled until the whole residual rope of the main drum 41 is withdrawn, and the drum rope clip is removed; in step S36, when the main drum 41 is replaced with a new main wire rope 10, firstly, one end of the new main wire rope 10 is fixed on the rope clamping device of the main drum 40, secondly, the winch winds the main wire rope 10 at a slow speed of 0.3 m/S, when the new main wire rope 10 is wound on the main drum 41, a person has to stand on the side surface of the wire rope, lightly strike the wire rope by hand hammer to enable the wire rope to enter the rope groove, after the new wire rope of the main drum 41 is wound for a circle number N1, a new wire rope kerf is selected, the two sides of the kerf are bound by corresponding iron wires, the wire rope is cut off, and a wedge ring is arranged and connected with the skip 30; in step S37, the main skip 31 is lifted to about 500 mm.
In the application, after the steel wire rope is replaced, the rope adjusting work is also needed, after the main skip 31 is lifted to the normal unloading position, the indication position of the depth indicator main skip 31 is overlapped with the original identification position, the transmission bevel gear can be disconnected, the transmission screw is adjusted, after the reset, the clutch is closed, the mechanical lock is opened, and the test is carried out.
As shown in fig. 1, the cooperation of the devices on site is schematically shown, which shows the positional relationship among the ground bunker 6, the dumper 8, the bottom hole bunker 9, the coal feeder 16, the loading device 14 and the wellhead locking plate 15.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A method of replacing a wire rope, characterized in that it is used for replacing a wire rope on a twin drum hoist (3) of a twin-shaft single rope winding type, said method comprising the steps of:
step S1, determining the sectional length and the total length of a main steel wire rope (10) and determining the sectional length and the total length of a secondary steel wire rope (20);
step S2, according to the total length of the auxiliary steel wire rope (20) determined in the step S1, fixing an auxiliary skip (32) through a girder supporting device (80), replacing the auxiliary steel wire rope (20) in a mode that an old rope is used for guiding a new rope, and carrying out auxiliary rope adjusting operation after the replacement operation of the auxiliary steel wire rope (20) is completed;
step S3, according to the total length of the main steel wire rope (10) determined in the step S1, fixing a main skip (31) through the girder supporting device (80), replacing the main steel wire rope (10) in a mode that an old rope is used for guiding a new rope, and performing main rope adjusting operation after the replacement operation of the main steel wire rope (10) is completed;
in the step S1, determining that the segmented length of the main wire rope (10) includes a hanging length Hc of the main wire rope (10) and a chord length Lx1 of the main wire rope (10), and determining that the segmented length of the auxiliary wire rope (20) includes a hanging length Hc of the auxiliary wire rope (20) and a chord length Lx2 of the auxiliary wire rope (20);
in the step S1, the method for calculating the chord length Lx1 of the main wire rope (10) includes:
according to a third calculation formulaDerived, wherein alpha 1 The main wire rope (10) is wound on a drum (40) in a double drum (40), a maximum outer deflection angle formed by the main wire rope (10) is formed when lifting starts, B is the axial width of the drum (40) wound on the main wire rope (10), S is the center distance between two head pulleys (50), a is the interval distance between the two drums (40), d is the diameter of the main wire rope (10), and epsilon is the gap between two adjacent wires of the main wire rope (10);
wherein alpha is 1 Maximum allowable value alpha of (2) 1·max 1 DEG 30', alpha is calculated 1 Substituting =1° 30 'into the third calculation formula to obtain the minimum chord length of the main wire rope (10) as L' x·min And L' x·min The method meets the following conditions: and L' x·min < 60m, give L x1 ＝L′ x·min 。
2. A method of replacing a wire rope according to claim 1, characterized in that in said step S1, the determination of the segmented length and total length of the primary wire rope (10) coincides with the method of determining the segmented length and total length of the secondary wire rope (20).
3. The method according to claim 1, wherein in the step S1, the overhang length Hc is obtained according to a first calculation formula hc=hj+hs+hz, where Hj is a wellhead height, m is a mine depth, m is a loading height, and Hz is a loading height, m.
4. A method for replacing a steel wire rope according to claim 3, wherein,
when the object to be lifted is a skip (30), the derrick height Hj satisfies the following conditions: hj is less than or equal to 30m and less than or equal to 35m, and the loading height Hz meets the following conditions: hz is not equal to 0, and Hz is not less than 18m and not more than 25m;
when the object to be lifted is a cage, the derrick height Hj satisfies the following conditions: hj is less than or equal to 15m and less than or equal to 25m, and the loading height Hz meets the following conditions: hz=0.
5. A method of replacing a wire rope according to claim 3, wherein the derrick height Hj is obtained according to a second calculation formula Hj = Hx + Hr + Hg +0.75Rt, where Hx is the unloading height, hr is the height of the object itself to be lifted, hg is the overwinding height, m is the radius of the crown block, rt is m.
6. The method of replacing a wire rope according to claim 1, wherein,
in the step S1, the method for calculating the chord length Lx2 of the secondary wire rope (20) includes:
according to the fourth calculation formula,derived, wherein alpha 2 Is the maximum internal deflection angle formed by the auxiliary steel wire rope (20) when the lifting of the roller (40) wound with the auxiliary steel wire rope (20) in the double rollers (40) is started, B 2 For the axial width of the drum (40) around which the secondary wire rope (20) is wound, S 2 Is the center distance, a, between two crown wheels (50) 2 Is the distance d between the two rollers (40) 2 Epsilon is the diameter of the auxiliary steel wire rope (20) 2 Is the clearance between two adjacent steel wires of the auxiliary steel wire rope (20), H is the lifting height, D is the diameter of the roller (40) wound with the auxiliary steel wire rope (20), 30 is the test length of the auxiliary steel wire rope (20), and the unit m and 3 are the friction turns，/>At the end of lifting of the drum (40) around which the secondary wire rope (20) is wound, the outer circumferential surface of the drum (40) is not wound with the width of the outer circumferential surface of the secondary wire rope (20) in the axial direction of the drum (40);
wherein alpha is 2 Maximum allowable value alpha of (2) 2·max 1 DEG 30', alpha is calculated 2 Substituting 1 DEG 30 'into the fourth calculation formula to obtain the minimum chord length L' of the auxiliary steel wire rope (20) x·min And L x·min The method meets the following conditions: and L' x·min < 60m, give L x2 ＝L″ x·min 。
7. A method of replacing a wire rope according to any one of claims 1 to 6, characterized in that one of the two drums (40) is a main drum (41) and the other of the two drums (40) is a secondary drum (42), wherein the main wire rope (10) is wound on the main drum (41) and the secondary wire rope (20) is wound on the secondary drum (42), wherein the main drum (41) is a fixed drum (40) and the secondary drum (42) is a movable drum.
8. A method of replacing a wire rope according to claim 1, characterized in that in said step S2, the method of replacing the secondary wire rope (20) comprises:
s20, a new auxiliary steel wire rope disc is placed on an auxiliary steel wire rope bracket (70) facing the direction of an auxiliary skip (32) outside a winch house in advance, and meanwhile, an old auxiliary steel wire rope disc is recovered and placed in the direction of a rope outlet of an auxiliary roller (42) in an inclined manner outside the winch house, so that the distance between the old auxiliary steel wire rope disc and the new steel wire rope disc (60) is not less than 3m;
step S21, cleaning residual coal dust in the main skip (31) and the auxiliary skip (32), cleaning floating coal at the unloading position and the wellhead platform (100), and fixing the auxiliary skip (32) through the supporting beam device (80) after cleaning operation is completed;
step S22, winding the main steel wire rope (10) on a main roller (41) for a circle number N1, marking the position of the main skip (31) on a corresponding depth indicator, winding the auxiliary steel wire rope (20) on an auxiliary roller (42) for a circle number N2, and marking the position of the auxiliary skip (32) on a corresponding depth indicator;
step S23, taking out a wedge-shaped ring of an old auxiliary steel wire rope (20), cutting off the old auxiliary steel wire rope (20) for overlapping a new auxiliary steel wire rope (20), simultaneously opening a clutch of a hoisting machine (3) and locking a car to lift the main skip (31) upwards to a preset length away from a loading position, closing the clutch and opening a mechanical lock of the hoisting machine (3), slowly starting, lowering the main skip (31) to the position where the loading device is located, slowly starting to bring a new auxiliary steel wire rope (20) into a winch room through a head sheave (50), and temporarily fixing the new auxiliary steel wire rope (20) by releasing the connection relation between the new auxiliary steel wire rope (20) and the old auxiliary steel wire rope (20);
step S24, removing the old auxiliary steel wire rope (20) on the auxiliary roller (42);
step S25, after all old auxiliary steel wire ropes (20) on the auxiliary roller (42) are withdrawn, replacing new auxiliary steel wire ropes (20) on the auxiliary roller (42);
and S26, lifting the auxiliary skip (32) by a preset height, and withdrawing the girder device (80) and the five plates (90) to finish the replacement of the auxiliary steel wire rope (20).
9. A method of replacing a wire rope according to claim 1, characterized in that in said step S3 the method of replacing the main wire rope (10) comprises:
s30, placing a new main wire rope disc on a main wire rope (10) bracket facing the main skip (31) outside a winch house in advance, and simultaneously recovering an old main wire rope disc and placing the old main wire rope disc in the direction of a rope outlet of a main roller (41) in an inclined manner outside the winch house so that the distance between the old main wire rope disc and the new wire rope disc (60) is not less than 3m;
step S31, cleaning residual coal dust in the main skip (31) and the auxiliary skip (32), cleaning floating coal at an unloading position and a wellhead platform (100), lowering the auxiliary skip (32) to a normal loading position after cleaning operation is completed, and opening a clutch of a lifting machine (3) after the auxiliary skip (32) is stopped so as to lock the auxiliary roller car;
step S32, after the auxiliary roller is locked, the main skip (31) is fixed through the beam device (80);
step S33, counting the number of turns N1 of the main steel wire rope (10) wound on the main roller (41), and marking the position of the main skip (31) on a corresponding depth indicator;
step S34, taking out the wedge-shaped ring of the old main steel wire rope (10), cutting off the old main steel wire rope (10) for overlapping the new main steel wire rope (10), and simultaneously, driving slowly to bring the new main steel wire rope (10) into a winch room through a head sheave (50), and releasing the connection relation between the new main steel wire rope (10) and the old main steel wire rope (10), so as to temporarily fix the new main steel wire rope (10);
step S35, removing the old main steel wire rope (10) on the main roller (41);
step S36, after all old main steel wire ropes (10) on the main roller (41) are withdrawn, replacing new main steel wire ropes (10) on the main roller (41);
and step S37, lifting the main skip (31) by a preset height, and extracting the girder device (80) and the five plates (90) to finish the replacement of the main steel wire rope (10).
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| CN1597488A (en) * | 2003-09-19 | 2005-03-23 | 谢建民 | New method of quick changing blast furnace car armoured rope |
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| CN106219374A (en) * | 2016-09-05 | 2016-12-14 | 云南永昌铅锌股份有限公司 | Multi-rope friction hoisting machine and head rope replacing options thereof |
| CN110550525A (en) * | 2019-09-17 | 2019-12-10 | 东北大学 | elevator safety detection method based on bending times of elevator steel wire rope |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597488A (en) * | 2003-09-19 | 2005-03-23 | 谢建民 | New method of quick changing blast furnace car armoured rope |
| JP2006027888A (en) * | 2004-07-21 | 2006-02-02 | Hitachi Building Systems Co Ltd | Main rope diagnostic device of elevator |
| CN105016184A (en) * | 2015-07-08 | 2015-11-04 | 徐州九益科技有限公司 | Replacement process for lifting steel wire rope of vertical shaft multi-rope friction lifter |
| CN106219374A (en) * | 2016-09-05 | 2016-12-14 | 云南永昌铅锌股份有限公司 | Multi-rope friction hoisting machine and head rope replacing options thereof |
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