CN115180489A - Method for rapidly replacing roller of large mine hoist - Google Patents

Abstract

The invention discloses a method for rapidly replacing a roller of a large mine hoist, which belongs to the technical field of mine equipment updating and comprises the following steps: s1: preparing a front end; s2: adjusting a skip; s3: a hoisting member; s4: disassembling; s5: hoisting; s6: cleaning is recovered; s7: running and debugging; s8: and (4) carrying out load test. The invention uses the lifting rigging to cooperate with the eight-tower crane to carry out segmented dismantling and assembling on the roller component of the western-style vehicle hoister, and after the roller is replaced, the roller is recovered to be matched with related electromechanical facilities, so as to form a construction method with tight organization structure and comprehensive flow supervision.

Description

Method for rapidly replacing roller of large-sized mine hoist

Technical Field

The invention relates to a method for replacing a roller of a mine hoist, belonging to the technical field of mine equipment updating.

Background

The existing mine main shaft is in a shaft tower type and double-system lifting mode, a six-rope friction type built-in motor lifter is mostly adopted, the diameter of a roller of the lifter is large, and the lifter drives a coal lifting skip to lift; an electric hoisting bridge crane is arranged in the garage, and a main hook is required to provide a large load pulling force; the roller of the hoister needs to be updated after being used for a long time, if the whole set of equipment is directly replaced, the period is long, the cost is high, a special construction mode needs to be designed, the components of the roller are replaced, the efficiency is improved, and the safety is ensured

How to research a method for rapidly replacing a roller of a large mine hoist is a problem to be solved urgently at present.

Disclosure of Invention

The invention mainly aims to solve the problems that in the prior art, a roller needs to be updated after a hoist is used for a long time, and if the whole set of equipment is directly replaced, the period is long and the cost is high.

The purpose of the invention can be achieved by adopting the following technical scheme:

a method for rapidly replacing a roller of a large-sized mine hoist comprises the following steps:

s1: preparing a front end; performing unpacking inspection and acceptance on main shaft elevator roller equipment and components, and performing site arrangement on related components;

s2: adjusting the skip; the skip is used for aligning and marking the position, so that the operation stability and the use safety of the skip are ensured;

s3: a hoisting member; before the roller is dismantled, the related components are gradually separated, the related transmission connection is cut off, and meanwhile, enough roller inlet and outlet space is reserved after the roller is dismantled, so that collision interference with subsequent building equipment is avoided;

s4: disassembling; the fixed connecting piece used by the roller is disassembled, the braking connection is separated, the components in the roller are disassembled in advance and fixed, and the braking components are disassembled, sealed, cleaned and stored;

s5: hoisting; hoisting the novel roller by using hoisting equipment, connecting the novel roller with a transmission member to form a novel connection relationship, and performing alignment fixation and lubrication;

s6: cleaning is recovered; pressing the cable and the winding terminal in the roller according to the mark; the slip ring is installed by matching the hanging strip with the travelling crane, and the slip ring is fastened with the roller connecting bolt according to requirements; after the wiring in the roller is recovered, cleaning the interior of the roller by using industrial alcohol, ensuring that no metal object exists, recovering glass windows of all observation holes, and carrying out closed installation and bolt fastening on end covers of bearing seats at two sides;

s7: running and debugging; after the new roller is installed, operation debugging is needed, the fitting degree with the existing power system is determined, and operation maintenance and hidden danger elimination are carried out at the same time;

s8: carrying out load test; during test, the load is increased in a grading manner, and the load is generally loaded in three stages: continuously running for 4-6 hours under the condition of 25% of design load; 50% of the design load is continuously operated for 4-6 hours; 75% of the design load is continuously operated for 4-6 hours; the design load of 100 percent continuously runs for 24 to 28 hours; and (4) stopping the continuous operation every 8-10 hours, carrying out one-time comprehensive inspection on the whole machine, keeping the whole machine normal, driving the machine to continue trial operation, and fastening the connecting screws of the rollers once again after the operation.

Further, step S2 includes the following steps:

a1: transferring original idle components near the wellhead of the main shaft, leaving the site empty, cleaning sundries and inflammable matters, and overhauling the elevator to ensure normal operation;

a2: a sinking stabilizing vehicle is arranged on the west side of the main tower derrick, the sinking stabilizing vehicle slides backwards on a concrete ground anchor by using steel wire ropes respectively, and a floor type complete distribution box is arranged on one side of the sinking stabilizing vehicle;

a3: descending the west skip to the shaft bottom, building a construction platform at the shaft mouth, clamping the double ends of the rope sleeves of the pulley block to the first ropes of the west skip upwards by using rope clamps, continuously lifting the west skip, clamping the ropes by using the rope clamps again after lifting, removing the first rope clamp when the rope sleeves of the pulley block are lifted to the upper part of the anti-collision beam, drawing two rope ends to the east side, continuously lifting the skip to remove the rope clamps until the first ropes of the pulley block are hung on the anti-collision girder of the east skip, and protecting the part of the girder, which is in contact with the steel wire rope, by using a pipe skin;

a4: the method comprises the following steps that a steel wire rope on a sinking and stabilizing trolley for a pulley penetrates into a pulley block in the air on the west side of a main well sleeve frame, a steel wire rope clamp is installed at the rope head, and the two ends of a fixed pulley and a movable pulley of a pulley block are respectively connected with one another through shackles and steel wire rope sleeves, so that the movable pulley is prevented from sliding downwards when the pulley block is lifted;

a5: arranging a stable vehicle outside a house on the east side of a main well wellhead, connecting the stable vehicle with electricity and debugging normally, winding a steel wire rope on a stable vehicle roller, and sliding the stable vehicle on a concrete ground anchor by using the steel wire rope;

a6: and inspecting the starting equipment and the transmission component, and performing field maintenance and energy supply allocation.

Further, step S2 includes the following steps:

b1: lifting the east skip to the ground, stopping the east skip at a position where the bottom of the skip is higher than the horizontal position of a well head, marking the bottom of the east skip and the position of the well head, and the top of the skip and a vertical frame respectively, removing a safety door railing and a platform steel plate corresponding to the southwest side of the well head by using a crane, cleaning sundries on a bottom plate beam of the well head, stopping the top end of the east skip to the well head, checking the telescopic condition of hanging oil cylinders on six groups of first ropes at the east skip side, and simultaneously pressing the six groups of oil cylinders if the oil cylinders still have telescopic amount until one group of the oil cylinders is in place, and then removing a rain shed at the top end of the east skip;

b2: constructors respectively hang the pulley block on an east skip by using a stable car, the first rope hanging device of the pulley block and the east skip is fixed together by using a steel rope sleeve, the pulley block is brought to the rope sleeve of the pulley block to be hung by using the east skip to lift, namely, the stable car is kept long enough to run the rope when the east skip is lifted, the pulley block is respectively hung to a certain height by using the stable car outside an east room of a well mouth, the pulley blocks are respectively connected and hung with the steel rope sleeve hung on an anti-collision beam by shackle, single-handle pulleys are respectively hung on a 5-floor anti-collision beam and a bottom plate beam of the well mouth sleeve frame by using the rope sleeve to be used as pulleys for sinking the stable-running-head rope, and the movable pulleys are pulled to a mark position of a vertical frame by using the skip;

b3: lifting a west skip to the ground, parking the west skip at the position flush with a well head between passengers, hoisting a skip steel frame to the position of the west skip passenger compartment of the well head by using a self-crane, hanging a chain block on each north-south beam of the skip passenger compartment, mounting the skip steel frame into the passenger compartment by using the chain block, transporting the skip steel frame to a shaft bottom loading chamber for parking after fixing, using the chain blocks by a constructor who arrives at the loading chamber from a subline in advance, arranging the skip steel frame on a shaft bottom jacket frame girder in the north-south direction, informing a hoist to fall the west skip after finishing, parking the west skip on a shaft jacket frame girder until the west skip is pedaled on the shaft jacket frame girder, and meanwhile, locking a head rope by a west skip side head rope double-code rope selecting device by 6-building constructors, installing a square plate clamp above the head rope of the double-code rope selecting device for protection, and marking by using a red paint spray, and leaving the west skip head rope clamp on a building plate type brake base bolt by using a lead wire rope sleeve matched with a lead length by 8 building constructor;

b4: when a skip bucket is kicked, the main shaft hoisting system stops running, the high-pressure side and the low-pressure side of the west car hoist are powered off, the eight-floor main shaft west car roller shield is detached, and the west car is hoisted to the first floor by a crane; two stable vehicles are started to receive ropes simultaneously, an east skip is lifted slowly, namely when the east skip is lifted, personnel are arranged at a stop beam of a tail rope at the bottom of a well for monitoring, when the east skip is stopped when the east skip is higher than a well opening, an I-shaped steel is hung to the bottom of the east skip by a crane through the cooperation of the stable vehicles, the I-shaped steel is lapped on a bottom plate beam of a sleeve frame in the north and south directions, after the I-shaped steel is aligned, the I-shaped steel is continuously welded with the bottom plate beam, the two stable vehicles synchronously release the ropes to enable the skip to fall, meanwhile, a first rope is synchronously and continuously dropped by a 6-storey double-stacking rope selection device until the bottom of the skip is stably placed above the I-shaped steel for stopping, and after the stable vehicles are placed stably, two groups of stable vehicle running head ropes are respectively kept on the bottom plate beam of the sleeve frame of the well opening by using a steel wire rope and a rope clamp.

Further, step S3 specifically includes the following measures:

c1: the east car head rope is respectively clamped by using the through long plate clamp on the 7 th floor, namely the east car head rope is lifted by using the chain block at the position which is 5 meters below the 8 th floor, and the lifting rope on the roller is loosened after the east car head rope is lifted; all the brake heads of the four disc brakes are opened, the manual ball valves for oil inlet and outlet of each disc brake are closed, all the brake heads are in an open state, the main oil inlet and outlet pipe ports of the hydraulic oil pipes of each disc brake are removed, and the hydraulic oil pipes of each disc brake are plugged by using clean plastic bags and plugs;

c2: marking the bottom of each disc-shaped brake by using self-spray paint, retaining the disc-shaped brake to be removed by utilizing a lifting rigging matched with a travelling crane, removing foundation bolts of a disc-shaped brake seat by using a hydraulic wrench, lifting the disc-shaped brake to a disc-shaped brake temporary base machined in advance on the southeast side of a derrick hall after removal, and fixing the disc-shaped brake by using bolts;

c3: the method comprises the steps of dismantling cooling wind cylinders connected with bearing seats on the north and south sides of a western car roller and covering an opening part to prevent foreign matters from entering, distributing loose lifting ropes on the roller to the north and south sides of the roller after dismantling the wind cylinders, winding the loosened first ropes with a raw rubber belt, dismantling an electric brush, a tachogenerator and a slip ring encoder, dismantling cables connected with parts such as cables connected with a slip ring frame of the western car roller and a stator inside the roller, marking and protecting each cable before dismantling, namely binding and protecting with rubber, placing and fixing at a place which does not influence roller replacement, dismantling a bus bar between two roller windings, dismantling a slip ring binding post and a rotor connection before dismantling the slip ring, and needing to perform fusion operation on copper welding.

Further, the specific operation flow is as follows:

d1: the roller connecting part is rotated to a horizontal position by utilizing a travelling crane to be matched with a roller rope sling, and meanwhile, a half roller connected with a slip ring wiring terminal is arranged at the lower part; before the roller is ready to be dismounted, magnetic pole protection is well carried out, rubber protection is placed at the air gap position to prevent the coil from being damaged by collision during hoisting, firstly, half of the roller which is not connected with the slip ring is dismounted, and then the other half of the roller is dismounted; since the bolt holes of the hoisting roller are covered by the front roller reinforcing clamping plate, the roller reinforcing clamping plate is firstly removed for the purpose; the roller is hoisted by a steel wire rope sleeve, one end of the steel wire rope sleeve is respectively connected with a hoisting crossbeam by a shackle, and the two ends of the other ends of the two steel wire rope sleeves are hung on the traveling crane hook, so that the traveling crane is lifted to a certain height and position;

d2: a hydraulic wrench is used for dismounting a connecting bolt and a roller clamping plate bolt in the roller, and a positioning bolt between the brake disc and the roller is dismounted by using a special nut jackscrew; the travelling crane is forced, the connecting bolts of the roller and the brake disc are removed, and after the connecting bolts of the upper half roller are completely removed, the upper half roller is moved out by the travelling crane; the roller at the upper half part which is removed is driven to a first floor by an eight-floor traveling crane;

d3: turning over the roller of the hoister by 180 degrees by using a lifting rigging and a travelling crane; when the roller is turned over, after the roller is turned over to a certain position, temporary supports at two sides of the roller are installed, and the lower half roller is detached by the same method;

d4: the brake discs on two sides of the roller of the west car are combined by two pieces, the method is the same as the method for dismantling the roller, the joint of the brake discs is pulled to a horizontal position by a hoisting rigging matched with a travelling crane, then the hoisting rigging matched with the travelling crane is utilized to firstly keep the brake disc on the upper half part, a constructor uses a hydraulic wrench to dismantle the bolt on the joint, the brake disc on the upper half part is hoisted to the empty ground of the first floor by the travelling crane, the brake discs are rotated 180 degrees by the hoisting rigging and the travelling crane, when the brake discs are overturned, after the brake discs are overturned to a certain position, temporary supports on two sides of the roller are installed to bear the brake discs, and the overturned brake discs are dismantled and transported to the first floor by the same method;

d5: cleaning a motor stator, and carrying out insulation measurement after cleaning; two ends of the west car elevator symmetrically penetrate through bolt holes of the bearing end cover and are screwed into the inner thread holes; removing the fixing bolt of the bearing end cover, and then ejecting the bearing end cover by using a jackscrew; removing the inner and outer bearing end covers at two ends of the elevator by using a lifting rigging matched with a travelling crane, and removing oil stains on the surface by using cotton cloth; after the sealing type sealing rings of the bearing rotating shafts at the two ends of the hoister are replaced, the bearings are checked and adjusted by using a special measuring tool, after the checking is confirmed, the bearing end covers at the two ends are restored and installed by using a lifting rigging matched with a travelling crane, the bearing end covers are hung on the bearing block bolts by using jackscrews, and the covers do not need to be closed temporarily;

d6: cleaning new brake discs on two sides of a west car, preparing a connecting bolt, hoisting the cleaned brake discs to the position of a main shaft lifting port by a hoisting belt matched with a truck crane outside a wellhead house, and catching and transporting the brake discs to an eight-layer hoisting machine room by a crane in a derrick; half brake discs are firstly installed on bearings on the north and south sides by the travelling crane, the brake discs are connected by bolts and are not fastened, after the brake discs are connected by the bolts, the travelling crane is used for rotating the brake discs installed on the travelling crane to the lower part, the remaining two brake discs are installed, and the brake discs are also connected by the bolts and are not fastened.

Further, in the flow D3, the removal principle is followed: each roller component needs to be hung and placed on the ground of the first floor by a traveling crane of eight floors.

Further, step S5 specifically includes the following procedures:

e1: hoisting a new roller component, namely a half of roller connected with a slip ring binding post, to a material lifting port in a wellhead house by using an automobile crane outside the wellhead house, then driving the new roller component to an eight-layer bearing beam platform of a wellhead tower by using a crane, installing a special hoisting beam, hoisting the roller, and cleaning all connecting surfaces of the roller; then hoisting the pulley to the upper part of the bearing seat at one side, slowly lowering the crane hook head, aligning the edge of the crane hook head with bolt holes of the outer protection covers of the bearing seats at two sides, installing connecting bolts, wherein the bolts are installed temporarily and are not fastened, and the bolts are uniformly fastened after the rollers are installed and aligned;

e2: removing the roller lifting beam after the upper half part of the roller is installed, rotating half of the roller to the lowest part by using the steel wire rope in cooperation with the travelling crane, removing the steel wire rope, installing the lifting beam on the other half of the roller by using the travelling crane, and installing the other half of the roller by using the same method;

e3: after the two half cylinders are mounted in place and the brake discs are all aligned, the two half cylinders must be mounted in place according to a set principle: the two dial indicators respectively measure the axial and radial runout of each brake disc, and accord with the regulated value, constructors firstly complement and fasten the connecting bolts in the roller according to the torque requirement by using a hydraulic wrench according to the designed fastening force of Simales corporation, after the connecting bolts in the roller are completely fastened, the connecting clamp plate on the side surface of the roller is installed, then the connecting bolts between the brake discs and the bearing are firstly fastened, and finally the connecting bolts between the roller and the brake discs are fastened;

e4: filling oil into the roller bearing by using special oil for bearing lubricating grease, and rotating the roller by using the hanging strip in cooperation with the travelling crane to fill up the liner on the roller; in the gap time of installing the liner, installing electrical accessories such as an encoder, an electric brush, a tachogenerator and a connecting cable on a slip ring on the side of the slip ring, welding the connection between a binding post of the slip ring and a busbar by a professional, and recovering the connection between the connecting cable of the stator and the busbar between the two half roller windings;

e5: the four groups of disc brakes are reinstalled and aligned by a traveling crane, a protective sleeve of a main oil inlet and outlet pipe port of a hydraulic oil pipe of each disc brake is removed, the oil inlet and outlet pipes of each disc brake are connected and fastened, a manual ball valve of an oil inlet and flushing pipeline of each disc brake is opened, the end face of a brake disc is used as a reference, a pressure adjusting brake cylinder of a western vehicle hydraulic station is matched with a dial indicator to enable the gaps between brake shoes on two sides and the brake disc to be consistent, and after the four groups of disc brakes are installed and aligned, foundation bolts are installed by a hydraulic wrench.

Further, in step S7, the bearing grease model is FAG LOAD400.

Further, in step S7, the idling is performed according to the following principle:

f1: and (3) oiling after the installation is finished, and filling LP lead-free ashless anti-wear hydraulic oil in the hydraulic station, wherein the LP lead-free ashless anti-wear hydraulic oil must be filled and dust enters strictly.

F2: the power is transmitted after the flat cable is checked to be correct, the idle running test run is continuously run for at least 8 hours, and the flat cable is rotated positively and negatively for 4 hours respectively;

f3; after idle running, constructors open the bearing end covers at two sides, the bearing ball stress of the bearing is adjusted according to the stress deviation of the bearing ball actually measured on site and design requirements, and after the adjustment meets the requirements, the bearing cover fastening bolts at two sides are sealed to recover to be normal.

Further, in step S7, the load operation is performed according to the following principle:

g1: after idling is normal, the air ducts on the north and south sides are recovered section by section according to requirements by utilizing a travelling crane, the air ducts are connected and sealed well, and bolts are fastened well;

g2: placing the western-style vehicle lifting ropes into the rope grooves corresponding to the new rollers one by using an eight-floor traveling vehicle, continuously and synchronously withdrawing the ropes when sinking and stabilizing the vehicle, and lifting the vehicle by using a skip until the I-shaped steel is dismantled; dismantling temporary facilities such as a side-pedal tank girder of the auxiliary skip and a well mouth steel plate lining flat base by using a stable vehicle and a crane; synchronously releasing the rope for sinking the shaft and stabilizing the vehicle to enable the skip to fall, and removing the rope locking device on the side of the western style vehicle main skip after the shaft sinking and stabilizing rope is not stressed; informing a hoist driver to lift the auxiliary skip at the maintenance speed, dismantling a steel wire rope between passengers, dismantling a tackle pulley set by utilizing the cooperation of the up-and-down operation of the auxiliary skip and the stable operation, and moving the dismantled temporary facility out of a wellhead room through a crane;

g3: the west car elevator driver firstly starts at a low speed, the speed is gradually increased, the speed is divided into several levels, on one speed level, the speed is determined to have no problem after being operated for many times, and then the speed is increased to the previous speed level until the speed is full, and the full-speed operation time is not less than 8 hours;

g4: the idle bearing cap fastening bolt operation is repeated.

The invention has the beneficial technical effects that: according to the method for rapidly replacing the roller of the large-scale mine hoist, a west skip is pedaled to the position of a shaft bottom loading chamber by a combined steel frame, a first rope of the west skip is locked by a double-code rope selecting device in six floors, then the east skip is hoisted for 6 meters by 2 16T sinking stabilizing cars arranged on the west side of a main shaft tower and matched with a pulley block hung on an anti-collision beam of the east skip, 4I 56b I-shaped steels are lapped on a bottom plate beam of the shaft in the north-south direction, the bottom of the skip falls onto the I-shaped steel, and at the moment, the first rope of the east skip is extended for 5 meters; the method comprises the steps of dismantling an air duct, dismantling and protecting related electromechanical facilities matched with a roller, pulling lifting ropes on the roller to the south and north sides by using a travelling crane, dismantling and assembling roller components of a western vehicle lifter in sections by using a lifting rigging matched with an eight-floor travelling crane, recovering the related electromechanical facilities matched with the roller after the roller is replaced, forming a construction method with tight organization structure and comprehensive flow supervision, greatly reducing potential safety hazards in the construction process while improving the efficiency, facilitating transportation and arrangement of equipment facilities such as an on-site crane and the like, cleaning coal of a girder, an anti-collision beam, a shaft bottom loading chamber girder and a skip in advance, reducing the weight of the skip to the maximum extent, and relating to centralized recovery treatment of grease and avoiding environmental pollution.

Drawings

FIG. 1 is a schematic diagram of an H80X 3 sheave block stress according to the present invention;

FIG. 2 is a schematic view of a force-bearing assembly-welded I-steel according to the present invention;

FIG. 3 is a schematic view of the non-centered concentrated load action of a 400-section steel according to the present invention.

Detailed Description

In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail with reference to the following examples, but the embodiments of the present invention are not limited thereto.

Example 1:

the method for rapidly replacing the roller of the large-sized mine hoist provided by the embodiment comprises the following steps:

s1: preparing a front end; the method comprises the following steps of performing unpacking inspection and acceptance on main shaft elevator roller equipment and components, and performing site arrangement on related components, and specifically comprises the following procedures:

a1: original idle components near the wellhead of the main shaft are transferred, a place is left vacant, sundries and inflammables are cleaned, and an elevator is overhauled to ensure normal operation;

a2: arranging a sinking stabilizing vehicle at the west side of a main tower derrick, wherein the sinking stabilizing vehicle is of a 16T specification, the sinking stabilizing vehicle slides backwards on a concrete ground anchor by using steel wire ropes respectively, the diameter of each steel wire rope is 28mm, and one side of the sinking stabilizing vehicle is provided with a floor type complete set of distribution boxes;

a3: descending the west skip to the shaft bottom, building a construction platform at the shaft mouth, clamping the double ends of the rope sleeves of the pulley sets upwards on the first ropes of the west skip by using 48-diameter rope clamps, continuously lifting the west skip, clamping the ropes by using the rope clamps again after lifting for 7 m, removing the first rope clamp when the rope sleeves of the pulley sets are lifted above the anti-collision beam, drawing the two rope ends to the east side, continuously lifting the skip to remove the rope clamps until the first ropes of the pulley sets are hung on the anti-collision girder of the east skip, and protecting the part, in contact with the steel wire rope, of the girder by using a pipe skin;

a4: penetrating 4H 80X 3 trolleys into 2 sets of pulley blocks by using 6X 37-FC-1670-phi 34.5mm steel wire ropes on two 16T sinking steadying cars in the air at the west side of a main shaft sleeve frame, installing 8 pairs of Y-36 steel wire rope clamps at rope ends, wherein the distance between the rope clamps is 200mm, and respectively connecting two ends of a fixed pulley and a movable pulley of two sets of pulley blocks together by using 5T shackles and phi 16 steel wire rope sleeves so as to prevent the movable pulley from sliding downwards when the pulley blocks are lifted;

a5: arranging a 5t car outside an east room of a main shaft wellhead, connecting the car with electricity and debugging normally, winding a phi 16mm steel wire rope 200m on a 5t car-stabilizing roller, and sliding the 5t car-stabilizing roller on a concrete ground anchor after using a phi 28 steel wire rope;

a6: inspecting the starting equipment and the transmission component, and performing field maintenance and energy supply allocation;

s2: adjusting a skip; utilize skip alignment position and mark, ensure its operation stability and safe in utilization, specifically include following mode:

b1: lifting the east skip to the ground, stopping the bottom of the skip 6 meters higher than the horizontal position of a well head, marking the bottom of the skip and the position of the well head, and the top of the skip and the position of a vertical frame respectively so as to be compared when stably lifting the skip, removing a safety door railing and a platform steel plate corresponding to the south side of a west car of the well head by using a crane by using 15t, cleaning sundries on a bottom plate beam of the well head, stopping the top end of the east skip to the well head, checking the telescopic condition of six groups of first ropes on the side of the east skip, and simultaneously pressurizing the six groups of oil cylinders if the oil cylinders still have telescopic quantity until one group of oil cylinders are in place, and then removing a rain shed at the top end of the east skip;

b2: the construction personnel use a 5t stationary trolley to respectively suspend two sets of pulley sets to an east skip, a phi 16mm steel wire rope sleeve is used for fixing the two sets of pulley sets and a first rope suspension device of the east skip together, the east skip is lifted to bring the pulley sets to a rope sleeve of a hanging pulley set, namely, the stationary trolley keeps enough length of a running rope in advance when lifting the east skip, the constructor wears a safety belt to a sleeve frame beam to carry out operation, the 5t stationary trolley outside a wellhead east room is used for respectively suspending the pulley sets to a certain height, the two pulley sets are respectively connected and suspended through 2 sets of 80t shackles and 2 phi 48mm steel wire rope sleeves suspended on an anti-collision beam, two H32 multiplied by 1 single pulleys are respectively suspended on the 5-floor anti-collision beam and a bottom plate beam of the wellhead sleeve frame through the phi 32 rope sleeve and are used as direction changing pulleys of a sinking stationary-pulley head rope, and the traveling pulleys are pulled to a mark position of a vertical frame by using the skip;

b3: lifting a west skip to the ground, stopping at the position flush with a well mouth between people, hoisting a skip steel frame to the position of the west skip and the people between people by using a 15t self-crane, hanging a 3t chain block on each of south and north beams of the skip and the people, using the chain blocks to install the skip steel frame into the people between people, after the fixation is finished, transporting to a shaft bottom loading chamber for stopping, using the chain blocks by 3 constructors who reach the loading chamber in advance from a subline, arranging the skip steel frame on a girder of the shaft bottom jacket frame in the south and north direction, informing a hoist driver to drop the west skip at the speed of 0.1m/s until the west skip is pedaled on the girder to stop, simultaneously locking 6 first ropes by using a first rope double-code rope selecting device (a rope puller) on the side of the shaft bottom of the 6 skip, installing 1 square auxiliary rope above the 6 first ropes of the double-code rope selecting device for protection, using red color as a mark, and using a long steel wire gate card of 8-plate card to match a steel wire gate brake of the west skip to keep a steel wire rope reel on a shaft base of the west skip and a shaft jacket of the west skip;

b4: when the main shaft lifting system stops running during the pedaling of the skip bucket, mine personnel are informed to power off the high-pressure side and the low-pressure side of the western car lifting machine, the roller shield of the western car of the eight-floor main shaft is detached, and the western car is hung to the first floor by a crane. At the moment, the east skip is 20 meters away from the ground, constructors detach the suspension devices of the east skip 1# and the east skip 6# from the 2 nd floor, and 80t shackles are used for respectively connecting the running blocks of the two sets of tackle groups with the head-mounted connecting holes of the east skip 1# and the east skip 6# respectively. Two steady cars start to receive ropes simultaneously, an east skip is lifted slowly for about 6 meters, namely when the east skip is lifted, personnel are arranged at a stop beam of a tail rope at the bottom of a well for monitoring, if the east skip is stopped immediately under certain conditions, the east skip is lifted by the steady cars, simultaneously, 6 first ropes are continuously lifted by using a double-code rope selecting device at the side of the east skip at 6 floors, the force borne by the double-code rope selecting device is the resultant force of a first hanger and a first rope, when the east skip is 1 meter higher than the well mouth, the east skip is stopped, 2 groups of double 56# I-shaped steels are hung to the bottom of the east skip by using a crane in a 5t steady car matching manner, 15t, the two groups of double 56# I-shaped steels are hung to the bottom of the east skip, the south and the north of the double 56# I-shaped steels are erected on a bottom plate beam of a sleeve frame, after the I-shaped steels are aligned, the two steady cars release the ropes synchronously, the skip buckets fall, and simultaneously, the 6 double-code rope selecting device synchronously and continuously falls until the bottoms of the 6 first ropes are stably placed above the 2 groups of double 56# I-shaped steels on the sleeve frame by using a rope with a pair of 32-diameter wire rope and 7 phi 36 rope, and a sleeve frame, respectively, and a wellhead, after the stable shaft mouth are stably placed, and the sleeve frame, the stop is clamped on the sleeve frame;

s3: a hoisting member; the method comprises the following steps of gradually separating related components before dismantling the roller, cutting off related transmission connection, reserving enough roller in-and-out space after dismantling, and avoiding collision interference with subsequent construction equipment, and specifically comprises the following measures:

c1: and (3) clamping a group of east car head ropes by using 3 through long plate clamps on the 7 th floor, namely, respectively clamping the east car head ropes at a position which is 5 meters below the 8 th floor, lifting by using a chain block, and loosening the lifting ropes on the drum after lifting. At the moment, coordinating mine personnel use the pressure of a western-style vehicle hydraulic station to completely open all brake heads of the four disc-shaped brakes and close the manual ball valves for oil inlet and outlet of each disc-shaped brake, so that all the brake heads are in an open state, and the main oil inlet and outlet pipe ports of each disc-shaped brake hydraulic oil pipe are dismantled and blocked by using a clean plastic bag and a plug;

c2: marking the bottom of each disc-shaped brake by using self-spray paint, retaining the disc-shaped brake to be removed by utilizing a lifting rigging matched with a travelling crane, removing foundation bolts of a disc-shaped brake seat by using a hydraulic wrench, lifting the disc-shaped brake to a disc-shaped brake temporary base machined in advance on the southeast side of a derrick hall after removal, and fixing the disc-shaped brake by using bolts;

c3: removing cooling air ducts connected with bearing seats on the north and south sides of a western-style vehicle roller and covering an opening part to prevent foreign matters from entering, distributing loose lifting ropes on the roller to the north and south sides of the roller after removing the air ducts, winding the spread first ropes with a raw rubber belt, removing an electric brush, a tachogenerator and a slip ring encoder, removing cables connected with components such as cables connected with a slip ring frame of the western-style vehicle roller and a stator inside the roller, marking and protecting each cable before removing, namely, binding and protecting by using rubber, placing and fixing the cable at a place which does not influence roller replacement, removing a connecting bus bar between two roller windings, removing a slip ring binding post and a rotor connection before removing the slip ring, and needing to perform fusion operation on copper welding, mounting a self-made slip ring support on the bearing seats on the north side of the western-style vehicle, removing a connecting bolt of the slip ring and a lifting machine roller and placing the slip ring on the processed slip ring support by utilizing travelling crane matching;

s4: disassembling; the method comprises the following steps of disassembling a fixed connecting piece used by the roller, separating the braking connection of the fixed connecting piece, pre-disassembling components in the roller and fixing the components, disassembling a braking component, and packaging, cleaning and storing the braking component, wherein the specific operation process comprises the following steps:

d1: the eight-floor traveling crane is matched with a hanging roller rope sleeve to rotate the roller joint to a horizontal position, and meanwhile, a half roller connected with the slip ring wiring terminal is arranged on the lower portion. Before the roller is ready to be dismounted, magnetic pole protection is well done, rubber protection is placed at the air gap position to prevent the coil from being damaged by collision during hoisting, firstly, half of the roller which is not connected with the slip ring is dismounted, and then the other half of the roller is dismounted. Since the bolt holes of the hoisting drum are covered by the preceding drum reinforcement bridge, the drum reinforcement bridge is first removed for this purpose. 2 pairs of steel wire rope sleeves 3.8 meters long and phi 48mm are used for hoisting the roller, one end of each of the two steel wire rope sleeves is connected with a hoisting cross beam matched with Simmons corporation by a 50T shackle, the other end of each of the two steel wire rope sleeves is hung on the head of an eight-storied 65T traveling crane through double heads, the traveling crane is lifted to a certain height and position, a hoisting cross beam base matched with the Simmons corporation is connected with the upper roller through a high-strength bolt with the length of 200mmM36, and the traveling crane is driven to rotate with strength;

d2: and (3) dismantling the connecting bolt and the roller clamping plate bolt inside the roller by using a hydraulic wrench, and dismantling the positioning bolt between the brake disc and the roller by using a special nut jackscrew. And (4) the travelling crane is forced, the connecting bolts of the roller and the brake disc are removed, and the upper roller is moved out by the travelling crane after the connecting bolts of the upper roller are completely removed. (because the connecting bolt of the lower half roller is not removed, the upper half roller can be clamped and can not be lifted out, the positioning bolt between the lower half roller and the brake disc should be loosened before removal, the brake disc and the connecting bolt of the bearing are loosened, all the connecting bolts are in a loose state, and a certain gap is reserved between the brake discs at the north side and the south side so as to be convenient for the brake disc at the upper half part to be lifted out.) the removed upper half roller is driven to a first floor by an eight-floor crane;

d3: the hoisting rigging and the travelling crane are utilized to turn over the roller of the hoister by 180 degrees (when the roller is turned over, the big hook head of the travelling crane is used for turning over, and when the roller is turned over to about 50 degrees, the small hook head keeps the upper edge of the roller). When the roller is turned over, after the roller is turned over to a certain position, temporary supports on two sides of the roller are installed, and the lower half roller is detached by the same method;

and following the removal principle: each roller component needs to be hung and placed on the ground of the first floor by a traveling crane of eight floors;

d4: the brake discs on two sides of the roller of the western-style vehicle are combined by two pieces, the method is the same as the method for dismantling the roller, the joint of the brake discs is pulled to a horizontal position by a lifting rigging matched with a traveling crane, then the lifting rigging matched with the traveling crane is utilized to firstly keep the brake disc on the upper half part, a constructor uses a hydraulic wrench to dismantle the bolt on the joint, the brake disc on the upper half part is hoisted to the space of the first floor by the traveling crane, the brake disc is rotated 180 degrees by the lifting rigging and the traveling crane, when the brake disc is overturned to a certain position, temporary supports on two sides of the roller are installed to bear the brake disc, and the overturned brake disc is dismantled and transported to the first floor by the method;

d5: cleaning a motor stator, and carrying out insulation measurement after cleaning; and each side bearing end cover at two ends of the western-style car elevator is symmetrically threaded into the inner threaded hole through the bolt hole of the bearing end cover by 8M 16X 220 bolts. Removing the fixing bolt of the bearing end cover, and then ejecting the bearing end cover by using a jackscrew; removing end covers of inner and outer bearings at two ends of the elevator by using a lifting rigging matched with a travelling crane, and removing oil stains on the surface by using cotton cloth; after the sealed sealing rings of the bearing rotating shafts at the two ends of the hoister are replaced, checking and adjusting the bearings by using a special measuring tool, restoring and installing bearing end covers at the two ends by using a lifting rigging matched with a travelling crane after checking and confirming, and hanging the bearing end covers on 8M 16X 220 bolts of a bearing seat by using jackscrews without closing the covers temporarily;

d6: cleaning new brake discs on two sides of a western-style vehicle, preparing connecting bolts (the bolts need to paint molybdenum disulfide before installation), respectively hoisting the cleaned brake discs to the position of a main well material lifting port by using a hoisting belt matched with a truck crane outside a wellhead house, and catching and transporting the brake discs to an eight-layer hoisting machine room through a traveling crane in a derrick. Firstly mounting half brake discs (two brake discs on each side are different, the upper surface of each brake disc is provided with a corresponding serial number, and the side surface of each brake disc is provided with a round hole at the side of a slip ring) on bearings on the north and south sides by using a travelling crane, connecting the brake discs by using bolts without fastening, after the brake discs are connected by the bolts, rotating the brake discs mounted on the upper surfaces to the lower parts by using the travelling crane, mounting the remaining two brake discs, and connecting the brake discs by using the bolts without fastening;

s5: hoisting; hoist new-type cylinder through lifting device, be connected new cylinder and drive component simultaneously, establish new connected relation to fix and lubricate counterpointing, specifically include following procedure:

e1: a new roller component, namely a half of rollers connected with slip ring binding posts, is hoisted to a material lifting port position in a wellhead room by using a 160t truck crane outside the wellhead room, and then the new roller component is driven to an eight-layer bearing beam platform of a derrick tower by using a crane, a special hoisting beam is installed, the rollers are hoisted, and all connecting surfaces of the rollers are cleaned firstly. Then lift by crane to one side bearing frame top, the driving gib head slowly transfers, and when its edge was right-hand alignment with the outer protection cover bolt hole of both sides bearing frame, the erection joint bolt, and the bolt was installed earlier and is not fastened temporarily, wait that the cylinder installation is adjusted the back and is unified to fasten, because of this half cylinder is with sliding ring bolted connection together, so should pass the terminal of sliding ring the brake disc, link together with four interim bolts and bearings, the bolt is temporarily not fastened. Installing half of the installed roller at the uppermost part of the brake disc, positioning the roller and the brake disc together by using a positioning pin, then installing a slip ring device by using a travelling crane, dismantling a bracket for reserving a slip ring, installing a connecting bolt between the roller and the brake disc, coating molybdenum disulfide on the bolt before installation, and connecting and not fastening the bolt;

e2: removing the roller lifting beam after the upper half part of the roller is installed, slowly rotating half of the roller to the lowest part by using a steel wire rope (selecting a steel wire rope with a proper length) matched with the travelling crane, removing the steel wire rope, installing the lifting beam on the other half of the roller by using the travelling crane, and installing the other half of the roller by using the same method;

e3: after the two half cylinders are mounted in place and the brake discs are all aligned, the following principles must be followed: the two dial indicators respectively measure the axial and radial runout of each brake disc, and accord with the regulated value, constructors use hydraulic wrenches to complement and fasten the M42 connecting bolt in the roller according to the torque requirement, after the connecting bolts in the roller are completely fastened, the connecting clamp plate on the side surface of the roller is installed, then the connecting bolts between the brake discs and the bearing are fastened, and finally the connecting bolts between the roller and the brake discs are fastened;

e4: the FAG LOAD400 bearing lubricating grease special oil is used for oiling the roller bearing, and the roller is rotated by matching a hanging strip with a travelling crane, so that the liner on the roller is filled. In the gap time of the installation liner, electrical accessories such as a coder, an electric brush, a tachogenerator and a connecting cable on a slip ring are installed on the side of the slip ring, a professional welds the connection between a slip ring binding post and a busbar, and restores the connection between the connecting cable of a stator and the busbar between the two half roller windings;

e5: and (5) restoring the four groups of disc brakes to be installed and aligned by the travelling crane. And coordinating mine personnel to debug the hydraulic station normally. And (3) removing the protective sleeve of the main oil inlet and outlet pipe port of the hydraulic oil pipe of each disc brake, connecting the oil inlet and outlet pipes of the hydraulic station and fastening the oil inlet and outlet pipes, opening the manual ball valves of the oil inlet and flushing pipelines of each disc brake, and using the end face of the brake disc as a reference, and using a pressure regulation brake cylinder of the hydraulic station of the western automobile to match with a dial indicator to enable the gaps between the brake shoes on two sides and the brake disc to be consistent, wherein the deviation meets the design requirements of the western Marge company. After the four groups of disc brakes are installed and aligned, installing foundation bolts by using a hydraulic wrench according to the torque designed by Simales;

s6: cleaning is recovered; pressing the cable and the winding terminal in the roller according to the marks; the slip ring is installed by matching the hanging strip with the travelling crane, and the slip ring is fastened with the roller connecting bolt according to requirements; after the wiring in the roller is recovered, the inside of the roller is cleaned by using industrial alcohol, so that no metal object exists, and the glass windows of all the observation holes are recovered. Carrying out closed installation on end covers of bearing seats on two sides, and fastening by bolts;

s7: running and debugging; after the new roller is installed, operation debugging is needed, the fitting degree with the existing power system is determined, operation maintenance is carried out simultaneously, hidden dangers are eliminated, and idle operation is carried out according to the following principle:

f1: and (3) oiling after the installation is finished, and filling LP lead-free ashless anti-wear hydraulic oil in the hydraulic station, wherein the LP lead-free ashless anti-wear hydraulic oil must be filled and dust enters strictly.

F2: the power is transmitted after the flat cable is checked to be correct, the idle running test run is continuously run for at least 8 hours, and the flat cable is rotated positively and negatively for 4 hours respectively;

f3; after idle running, constructors open the bearing end covers on the two sides, the stress of the bearing ball of the bearing is adjusted according to the stress deviation of the bearing ball actually measured on site and design requirements, and after the adjustment meets the requirements, the bearing end covers on the two sides are sealed, and fastening bolts are restored to be normal;

the load operation follows the following principle:

g1: after idling is normal, the air ducts on the north and south sides are restored section by section according to requirements by utilizing a travelling crane, the air ducts are connected and sealed well, and bolts are fastened well;

g2: the west car lifting ropes are placed in rope grooves corresponding to new rollers one by using an eight-floor traveling crane (2 hand chain blocks of 5T are matched with a full-length plate clamp to lift a first rope suspension device at floor 6), two 16T shaft sinking stabilizing vehicles are continuously and synchronously taken up, and the west car lifting ropes are lifted by using a skip until I-shaped steel can be detached. And (5) dismantling temporary facilities such as a girder of the auxiliary skip side-pedal tank, a wellhead steel plate lining flat base and the like by using a 5t stable vehicle and a crane. And synchronously releasing the rope for sinking the shaft and stabilizing the vehicle to enable the skip to fall, and removing the rope locking device at the side of the western style vehicle main skip after the shaft sinking and stabilizing rope is not stressed. And informing a driver of the elevator to lift the auxiliary skip at the overhauling speed, dismantling a steel wire rope between passengers, dismantling the pulley block by utilizing the upper and lower running of the auxiliary skip in cooperation with 5t of stable vehicle, and moving the dismantled temporary facility out of a wellhead room through a crane. Permanent facilities such as an auxiliary skip can cap, a safety gate railing and a platform steel plate corresponding to the south side of the west car are recovered;

g3: the west car elevator driver firstly starts low speed, the speed is gradually increased, the speed can be divided into several levels, such as 2M/S,4M/S,6M/S,8M/S and the like, and when no problem is determined by multiple operations on one speed level, the west car elevator driver is further increased to the previous speed level until full speed is reached, and the full speed operation time is not less than 8 hours. After the operation, the connecting screw of the roller is fastened again;

g4: repeating the operation of fastening the bolt by the idle running bearing cover;

s8: carrying out load test run; the load should be increased in grades during test, and generally the load is loaded in three grades: 25% of the design load was run continuously for 4 hours; 50% of the design load was run continuously for 4 hours; 75% of the design load was run continuously for 4 hours; 100% of the design load was run continuously for 24 hours; and (4) stopping the continuous operation every 8 hours, carrying out one-time comprehensive inspection on the whole machine, wherein the operation is normal, the machine can be driven to run continuously, and the connecting screws of the roller are fastened once again after the operation.

Example 2:

the embodiment provides a method for quickly replacing a roller of a large-sized mine hoist, and related intensity accounting of partial structural parts and motion conditions, which comprises the following steps:

(1) As can be seen from fig. 1, the steady car running head force is calculated as follows:

the weight of the skip bucket is 53 tons (including head and tail hanging), the tail ropes are three in total, and a single rope is 14.5 tons in total, 43.5 tons in total and 96.5 tons in total.

The maximum hoisting weight is Q =96.5t, residual coal blocks which cannot be removed exist in the skip, the hoisting weight is considered according to Q =100t, 2 sets of tackle group systems are shared, and the number of working ropes of the tackle group n =14.

The model of the steel wire rope on the shaft sinking car-stabilizing roller is 6 multiplied by 37+ FC-1670-phi 34.5mm, the total is 600 meters, and the breaking tension of the steel wire rope on the shaft sinking car-stabilizing roller is obtained through inspection data: 621.5KN;

the steel wire rope running head tension S = Qx (1-eta) multiplied by K/(1-eta n) multiplied by eta

＝100×(1-0.96)×1.1/(1-0.9614)×0.96

≈9.7t；

The safety coefficient n =62150/9700 is approximately equal to 6.4 > 6, so a phi 34.5mm steel wire rope is selected to meet the requirement, the guide pulley selected by the head running rope is an H32 multiplied by 1 single-handle opening pulley, the rope angles at two sides are considered according to 90 degrees,

f is =1.414 × S =1.414 × 9.7 ≈ 13.7t, so that the H32 × 1 guide pulley is selected to meet the requirement;

calf skip steel frame calculation

Skip tail rope adding: 55t

The pedal skip steelframe is the assembly welding H shaped steel: the sizes are H220 × 400 × 20 × 20Wx =1977.2cm3, [ delta ] =1600kg/cm2;

as shown in fig. 2, under the condition of two symmetrical concentrated load acting forces, the maximum bending moment points of the assembly-welded i-beams (placed in the north-south direction) are at F1 and F2, and the stress of 2 i-beams is calculated as follows:

so F =55/2=27.5t =27500kg,

the stress of a single I-shaped steel is as follows: f =27500kg, L =85cm.

For the stress situation, the maximum bending moment is known to be at the point F1 or F2, and the calculation is as follows:

F1＝F2＝F＝27500kg；

M1(max)＝M2(max)＝F×L＝27500×85；

M1(max)＝M2(max)＝2337500kg.cm；

[δ]＝M1/Wx＝2337500/1977.2≈1182kg/cm2＜[δ]；

(3) Caliper crossbeam calculation

Skip tail rope adding: 55t, a skip bucket girder is pedaled, namely H400 multiplied by 13 multiplied by 21 section steel is arranged on a girder of a loading chamber at the bottom of a well.

Wx＝3265cm3、[δ]＝1600kg/cm2

As can be seen from FIG. 3, under the condition of non-centered concentrated load acting force of the 400 section steel, the maximum bending moment point is at the point F1, and the stress is applied to 2I-shaped steels, and the calculation is as follows:

so F1=55/2=27.5t =27500kg;

the stress of a single I-shaped steel is as follows: f1=27500kg, L =763cm, L1=132.5cm, L2=630.5cm.

M1(max)＝F×L1×L2/L＝27500×132.5×630.5/763；

M1(max)＝3010988kg.cm；

[δ]＝M1/Wx＝3010988/3265≈922kg/cm2＜[δ]；

(4) Checking device for rope locking device of western skip 6-storied building

The first rope at the side of the 6-storied building west car is mainly locked by using a TT-B/160/6 double-code rope selection device, the weight of 6 first ropes is 43.5t, the maximum bearing capacity of the double-code rope selection device is 160t, and the using requirement of the time is met

(5) Phi 48 rope sling checking for hanging H80X 3 fixed pulley train

The weight of the skip bucket is 53 tons (including head and tail hanging), the tail ropes are three in total, and a single rope is 14.5 tons and 43.5 tons in total. The maximum hoisting weight is Q =96.5t, the weight of the coal blocks, two sets of tackle blocks, the running rope and the shackle are attached to the interior of the Kaili skip, and the hoisting weight is considered according to Q =100 t.

The steel wire rope sleeve is doubled up by using two pairs of 6V multiplied by 43C-1770-phi 48mm steel wire rope sleeves, and the included angle coefficient is 1.155.

And (3) testing to obtain the minimum breaking force of the steel wire rope: 1700KN, single wire rope fifty percent discount is used, is equivalent to 2 wire rope fag ends atress, and 2 rope sling are equivalent to 4 thigh atresss.

The safety factor n =1700 × 4/(980 × 1.155) ≈ 6;

therefore, the fixed pulley group hung by a rope sleeve with the diameter of 48mm meets the safety requirement.

(6) Hoisting roller phi 48 rope sling checking

The maximum hoisting weight of the roller is 30t. Two pairs of 6V multiplied by 43C FC-1770-phi 48mm steel wire rope sleeves are selected as the steel wire rope sleeves, the angle is 45 degrees when the steel wire rope sleeves are lifted, and the maximum working load is 0.7 times of the rated load.

And (3) testing to obtain the minimum breaking force of the steel wire rope: 1700KN, single wire rope fifty percent discount is used, is equivalent to 2 wire rope fag ends atress, and 2 rope sling are equivalent to 4 thigh atresss.

The safety factor n =170 × 2 × 0.7/30 ≈ 7.9;

therefore, the fixed pulley group hung by a rope sleeve with the diameter of 48mm meets the safety requirement.

(7) Calculation of wellhead kick-up dustpan beam

(1) Two groups of double II56a # I-steel kicking east skip buckets, the weight of the two groups of double II56a # I-steel kicking east skip buckets is the weight of the skip bucket body and the weight of the tail rope, and the total weight is calculated according to 100 t;

the stress point is calculated by 600mm from the edge of the bottom plate beam of the jacket frame, and each stress point is calculated according to 25000 kg;

single group I56a # I-steel Wx =2342cm3, [ delta ] =1600kg/cm2;

M＝25000×60＝1500000kg.cm；

δ＝M/Wx＝1500000/2342＝640kg/cm2<[δ]＝1600kg/cm2；

therefore, two groups of double II56a # I-shaped steel are selected, and the using requirement can be met.

(2) The bottom plate beam of the wellhead housing is H800 multiplied by 400 multiplied by 12 multiplied by 20 shaped steel.

Wx＝6009cm3、[δ]＝1600kg/cm2；

M1(max)＝F×L1×L2/L＝27500×283.2×452.7/763；

M1(max)＝4620744kg.cm；

[δ]＝M1/Wx＝4620744/6009≈769kg/cm2＜[δ]；

The stable running rope is left on the bottom plate beam of the sleeve frame which does not bear the skip on the west side, the pulling force is 9.8t, and the pulling force is far smaller than the calculation bearing capacity of the skip, so the stable running rope is left on the bottom plate beam of the sleeve frame, and the use requirement is met.

(8) Force checking for sinking and vehicle stabilizing

And (3) horizontally discharging the rope from the 16t shaft sinking and stabilizing vehicle, using a phi 28 steel wire rope, remaining the rope on a concrete ground anchor, and fixing the rope by using 8M 27 anchor rods and 330 anchor rods.

The maximum tensile force borne by the well sinking and stabilizing vehicle is as follows: f =9.7t;

phi 28, the breaking force of the steel wire rope is 50t;

the safety factor n =50 × 4/9.7 ≈ 20;

therefore, the steel wire rope with the diameter of 28mm is selected and then the vehicle is left to be stable to meet the safety requirement.

The shearing force of a single ground anchor bolt is as follows: q = F/8=1212.5kg;

δ＝Q/A＝1212.5/5.72＝212kg/cm2<[δ]；

example 3; this example provides a table of crane options for use in the method of example 1 for quick change of large mine hoist drums, as shown in the following table:

looking up a table: according to on-site investigation, the maximum rotation radius of a construction site is 10 meters, the hoisting height is 8 meters, the main arm is extended to 18.1 meters, and the rated performance of a crane is 40t; the heaviest roller is 30t in weight, so that the use requirement of the time is met.

In summary, in this embodiment, according to the method for rapidly replacing the drum of the large-sized mine hoist in this embodiment, the west skip is pedaled to the bottom loading chamber position by the combined steel frame, the first rope of the west skip is locked by the double-code rope selection device in the sixth floor, then the east skip is lifted for 6 meters by 2 16T sinking stabilizing cars arranged on the west side of the main shaft tower and matched with a trolley group hung on an anti-collision beam of the east skip, 4I 56b steel beams are hitched on a bottom plate beam of the shaft in the north-south direction, the bottom of the skip falls onto the I-steel beam, and at this time, the first rope of the east skip is extended by 5 meters; the method comprises the steps of dismantling an air duct, dismantling and protecting related electromechanical facilities matched with a roller, pulling lifting ropes on the roller to the south and north sides by using a travelling crane, dismantling and assembling roller components of a western vehicle lifter in sections by using a lifting rigging matched with an eight-floor travelling crane, recovering the related electromechanical facilities matched with the roller after the roller is replaced, forming a construction method with tight organization structure and comprehensive flow supervision, greatly reducing potential safety hazards in the construction process while improving the efficiency, facilitating transportation and arrangement of equipment facilities such as an on-site crane and the like, cleaning coal of a girder, an anti-collision beam, a shaft bottom loading chamber girder and a skip in advance, reducing the weight of the skip to the maximum extent, and relating to centralized recovery treatment of grease and avoiding environmental pollution.

The above are only further embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its concept within the scope of the present invention. .

Claims (10)

1. A method for rapidly replacing a roller of a large mine hoist is characterized by comprising the following steps:

s1: preparing a front end; opening boxes of main shaft elevator roller equipment and components, checking and accepting, and arranging fields of related components;

s2: adjusting a skip; the skip is used for aligning and marking the position, so that the operation stability and the use safety of the skip are ensured;

s3: a hoisting member; before the roller is dismantled, related components of the roller are gradually separated, related transmission connection is cut off, and meanwhile, enough roller in-out space is reserved after the roller is dismantled, so that collision interference with subsequent building equipment is avoided;

s4: disassembling; the fixed connecting piece used by the roller is disassembled, the braking connection is separated, the components in the roller are disassembled in advance and fixed, and the braking components are disassembled, sealed, cleaned and stored;

s5: hoisting; hoisting the novel roller by using hoisting equipment, connecting the novel roller with a transmission member to form a novel connection relationship, and performing alignment fixation and lubrication;

s6: cleaning is recovered; pressing the cable and the winding terminal in the roller according to the mark; mounting the slip ring by matching the hanging strip with the travelling crane, and fastening the slip ring and the roller connecting bolt according to requirements; after the wiring in the roller is recovered, cleaning the interior of the roller by using industrial alcohol, ensuring that no metal object exists, recovering glass windows of all observation holes, and carrying out closed installation and bolt fastening on end covers of bearing seats at two sides;

s7: running and debugging; after the new roller is installed, operation debugging is needed, the fitting degree with the existing power system is determined, and operation maintenance and hidden danger elimination are carried out at the same time;

s8: carrying out load test run; the load should be increased in grades during test, and generally the load is loaded in three grades: continuously running for 4-6 hours under the condition of 25% of design load; 50% of the design load is continuously operated for 4-6 hours; 75% of the design load is continuously operated for 4-6 hours; the design load of 100 percent continuously runs for 24 to 28 hours; and (4) stopping the machine every 8-10 hours after continuous operation, carrying out one-time comprehensive inspection on the whole machine, wherein the machine is normal, driving the machine to continue trial operation, and fastening the connecting screws of the rollers once again after operation.

2. The method for rapidly replacing the roller of the large-scale mine hoist as claimed in claim 1, wherein the step S2 comprises the following steps:

a1: original idle components near the wellhead of the main shaft are transferred, a place is left vacant, sundries and inflammables are cleaned, and an elevator is overhauled to ensure normal operation;

a2: a sinking stabilizing vehicle is arranged on the west side of the main tower derrick, the sinking stabilizing vehicle slides backwards on a concrete ground anchor by using steel wire ropes respectively, and a floor type complete distribution box is arranged on one side of the sinking stabilizing vehicle;

a3: descending the west skip to the bottom of the well, building a construction platform at the well mouth, clamping double ends of a rope sleeve of a trailer group upwards on a first rope of the west skip by using a rope clamp, continuously lifting the west skip, clamping the rope by using the rope clamp again after lifting, removing the first rope clamp when the rope sleeve of the trailer group is lifted to the upper part of an anti-collision beam, drawing two rope heads to the east side, continuously lifting the skip to remove the rope clamp until the first rope of the trailer group is hung on an anti-collision girder of the east skip, and protecting the contact part of the girder and a steel wire rope by using a pipe skin;

a4: a steel wire rope on a sinking and stabilizing trolley for the trolley is penetrated into a pulley block in the air space on the west side of a main well sleeve frame, a steel wire rope clamp is installed at the rope head, and the two ends of a fixed pulley and a movable pulley of a pulley block are respectively connected with each other through shackles and steel wire rope sleeves, so that the movable pulley is prevented from sliding downwards when the pulley block is lifted;

a5: arranging a stable vehicle outside a house on the east side of the main shaft wellhead, connecting the stable vehicle with electricity and debugging normally, winding a steel wire rope on a stable vehicle roller, and sliding the stable vehicle on a concrete ground anchor by using the steel wire rope;

a6: and inspecting the starting equipment and the transmission component, and performing field maintenance and energy supply allocation.

3. The method for rapidly replacing the roller of the large-scale mine hoist as claimed in claim 1, wherein the step S2 comprises the following steps:

b1: lifting the east skip to the ground, stopping the east skip at a position higher than the horizontal position of a well mouth at the bottom of the skip, marking the bottom of the skip and the position of the well mouth, and marking the top of the skip and the position of a vertical frame, removing a safety door railing and a platform steel plate corresponding to the southwest side of the well mouth by using a crane, cleaning sundries on a bottom plate beam of the well mouth, stopping the top end of the east skip to the well mouth, checking the telescopic condition of six groups of first ropes on which oil cylinders are suspended at the east skip side, pressing the six groups of oil cylinders simultaneously if the oil cylinders still have telescopic quantity until one group of oil cylinders is in place, and then removing a rain shed at the top end of the east skip;

b2: the construction personnel use the stationary trolley to respectively suspend the pulley group to the east skip, the first rope suspension device of the pulley group and the east skip is fixed together by a steel wire rope sleeve, the pulley group is taken to the position of the rope sleeve of the pulley group which is hung by the east skip when the east skip is lifted, namely, the stationary trolley keeps enough length of the running rope in advance when the east skip is lifted, the pulley group is respectively suspended to a certain height by the stationary trolley outside the east room of the well mouth, the pulley group is respectively connected and suspended by a shackle and the steel wire rope sleeve hung on an anti-collision beam, single-handle pulleys are respectively hung on a 5-floor anti-collision beam and a bottom plate beam of the well mouth sleeve frame by the rope sleeve and are used as pulleys for sinking the direction-changing rope of the stationary trolley running head, and the movable pulley is pulled to the mark position of the vertical frame by the skip;

b3: lifting a west skip to the ground, parking at the position flush with a well mouth between people, hoisting a skip steel frame to the position of the west skip at the well mouth between people by using a self-crane, hanging a chain block on each of north and south beams of the skip between people, loading the skip steel frame into the people by using the chain blocks, transporting to a bottom hole loading chamber to park after fixing is finished, using the chain blocks by a constructor who arrives at the loading chamber in advance from a subline, arranging the skip steel frame on a bottom hole jacket frame girder in the south and north direction, informing a hoist to drop the west skip after finishing, stopping until the west skip is pedaled on the bottom hole jacket frame girder, simultaneously locking a head rope by a 6-rise constructor by using a west skip side head rope double-code rope selection device, installing square plate clamps above the head rope of the double-code selection rope device to protect, and using red paint spraying building to mark, and using a lead-length to cooperate with a steel wire rope sleeve to leave the west skip head rope on a 8-disk type brake base bolt;

b4: when a skip bucket is kicked, the main shaft hoisting system stops running, the high-pressure side and the low-pressure side of the western-style car hoist are powered off, the eight-floor main shaft western-style car roller shield is detached, and the western-style car is hoisted to the first floor by a crane; two stable vehicles are started to receive ropes simultaneously, an east skip is lifted slowly, namely when the east skip is lifted, personnel are arranged at a stop beam of a tail rope at the bottom of a well for monitoring, when the east skip is stopped when the east skip is higher than a well opening, an I-shaped steel is hung to the bottom of the east skip by a crane through the cooperation of the stable vehicles, the I-shaped steel is lapped on a bottom plate beam of a sleeve frame in the north and south directions, after the I-shaped steel is aligned, the I-shaped steel is continuously welded with the bottom plate beam, the two stable vehicles synchronously release the ropes to enable the skip to fall, meanwhile, a first rope is synchronously and continuously dropped by a 6-storey double-stacking rope selection device until the bottom of the skip is stably placed above the I-shaped steel for stopping, and after the stable vehicles are placed stably, two groups of stable vehicle running head ropes are respectively kept on the bottom plate beam of the sleeve frame of the well opening by using a steel wire rope and a rope clamp.

4. The method for rapidly replacing the roller of the large-scale mine hoist as claimed in claim 1, wherein the step S3 specifically comprises the following steps:

c1: the east car head rope is respectively clamped by using the through long plate clamp on the 7 th floor, namely the east car head rope is lifted by using the chain block at the position which is 5 meters below the 8 th floor, and the lifting rope on the roller is loosened after the east car head rope is lifted; all the brake heads of the four disc brakes are opened, the manual ball valves for oil inlet and outlet of each disc brake are closed, all the brake heads are in an open state, the main oil inlet and outlet pipe ports of the hydraulic oil pipes of each disc brake are removed, and the hydraulic oil pipes of each disc brake are plugged by using clean plastic bags and plugs;

c2: marking the bottom of each disc-shaped brake by using self-spray paint, retaining the disc-shaped brake to be removed by utilizing a lifting rigging matched with a travelling crane, removing foundation bolts of a disc-shaped brake seat by using a hydraulic wrench, lifting the disc-shaped brake to a disc-shaped brake temporary base machined in advance on the southeast side of a derrick hall after removal, and fixing the disc-shaped brake by using bolts;

c3: the method comprises the steps of dismantling cooling wind cylinders connected with bearing seats on the north and south sides of a western car roller and covering an opening part to prevent foreign matters from entering, distributing loose lifting ropes on the roller to the north and south sides of the roller after dismantling the wind cylinders, winding the loosened first ropes with a raw rubber belt, dismantling an electric brush, a tachogenerator and a slip ring encoder, dismantling cables connected with parts such as cables connected with a slip ring frame of the western car roller and a stator inside the roller, marking and protecting each cable before dismantling, namely binding and protecting with rubber, placing and fixing at a place which does not influence roller replacement, dismantling a bus bar between two roller windings, dismantling a slip ring binding post and a rotor connection before dismantling the slip ring, and needing to perform fusion operation on copper welding.

5. The method for rapidly replacing the roller of the large-sized mine hoist as claimed in claim 1, characterized in that the specific operation flow is as follows:

d1: a travelling crane is matched with a rope sleeve of a hanging roller to rotate the joint of the roller to a horizontal position, and meanwhile, a half roller connected with a slip ring wiring terminal is arranged at the lower part; before the roller is ready to be dismounted, magnetic pole protection is well done, rubber sheet protection is placed at the air gap position to prevent coils from being damaged by collision during lifting, firstly, half of the roller which is not connected with a slip ring is dismounted, and then the other half of the roller is dismounted; since the bolt holes of the hoisting drum are covered by the previous drum reinforcing clamping plates, the drum reinforcing clamping plates are firstly removed for this purpose; the roller is hoisted by a steel wire rope sleeve, one end of the steel wire rope sleeve is respectively connected with a hoisting crossbeam by a shackle, and the two ends of the other ends of the two steel wire rope sleeves are hung on the traveling crane hook, so that the traveling crane is lifted to a certain height and position;

d2: a hydraulic wrench is used for dismantling a connecting bolt and a roller clamping plate bolt in the roller, and a positioning bolt between the brake disc and the roller is dismantled by using a special nut jackscrew; the travelling crane is forced, the connecting bolts of the roller and the brake disc are removed, and after the connecting bolts of the upper half roller are completely removed, the upper half roller is moved out by the travelling crane; the roller at the upper half part which is removed is driven to a first floor by an eight-floor traveling crane;

d3: turning over the roller of the hoister by 180 degrees by using a hoisting rigging and a travelling crane; when the roller is turned over, after the roller is turned over to a certain position, temporary supports on two sides of the roller are installed, and the lower half roller is detached by the same method;

d4: the brake discs on two sides of the roller of the western-style vehicle are combined by two pieces, the method is the same as the method for dismantling the roller, the joint of the brake discs is pulled to a horizontal position by a lifting rigging matched with a traveling crane, then the lifting rigging matched with the traveling crane is utilized to firstly keep the brake disc on the upper half part, a constructor uses a hydraulic wrench to dismantle the bolt on the joint, the brake disc on the upper half part is hoisted to the space of the first floor by the traveling crane, the brake disc is rotated 180 degrees by the lifting rigging and the traveling crane, when the brake disc is overturned to a certain position, temporary supports on two sides of the roller are installed to bear the brake disc, and the overturned brake disc is dismantled and transported to the first floor by the method;

d5: cleaning a motor stator, and carrying out insulation measurement after cleaning; two ends of the west car elevator symmetrically penetrate through bolt holes of the bearing end cover and are screwed into the inner thread holes; removing the fixing bolt of the bearing end cover, and then ejecting the bearing end cover by using a jackscrew; removing end covers of inner and outer bearings at two ends of the elevator by using a lifting rigging matched with a travelling crane, and removing oil stains on the surface by using cotton cloth; after the sealing type sealing rings of the bearing rotating shafts at the two ends of the hoister are replaced, the bearings are checked and adjusted by using a special measuring tool, after the checking is confirmed, the bearing end covers at the two ends are restored and installed by using a lifting rigging matched with a travelling crane, the bearing end covers are hung on the bearing block bolts by using jackscrews, and the covers do not need to be closed temporarily;

d6: cleaning new brake discs on two sides of a west car, preparing a connecting bolt, hoisting the cleaned brake discs to the position of a main shaft lifting port by a hoisting belt matched with a truck crane outside a wellhead house, and catching and transporting the brake discs to an eight-layer hoisting machine room by a crane in a derrick; half brake discs are firstly installed on bearings on the north and south sides by the travelling crane, the brake discs are connected by bolts and are not fastened, after the brake discs are connected by the bolts, the travelling crane is used for rotating the brake discs installed on the travelling crane to the lower part, the remaining two brake discs are installed, and the brake discs are also connected by the bolts and are not fastened.

6. The method for rapidly replacing a large-sized mine hoist roller according to claim 5, wherein in the process D3, the dismantling principle is followed: each roller member needs to be hung and put on the ground of one floor by a traveling crane of eight floors.

7. The method for rapidly replacing the roller of the large-scale mine hoist as claimed in claim 1, wherein the step S5 specifically comprises the following procedures:

e1: hoisting a new roller component, namely a half of rollers connected with the slip ring binding post, to a material lifting port in the wellhead house by using an automobile crane outside the wellhead house, then driving the new roller component to an eight-layer bearing beam platform of the derrick by using a crane, installing a special hoisting beam, hoisting the rollers, and cleaning all connecting surfaces of the rollers firstly; then hoisting the pulley to the upper part of the bearing seat at one side, slowly lowering a crane hook head, aligning the edge of the crane hook head with bolt holes of the outer protection covers of the bearing seats at two sides, installing a connecting bolt, firstly installing the bolt and temporarily not fastening the bolt, and uniformly fastening the bolt after the installation and alignment of the roller, wherein the half roller is connected with the sliding ring by the bolt, so that a binding post of the sliding ring penetrates through a brake disc and is connected with the bearing by four temporary bolts, and the bolt is temporarily not fastened;

e2: removing the roller lifting beam after the upper half part of the roller is installed, rotating half of the roller to the lowest part by using the steel wire rope in cooperation with the travelling crane, removing the steel wire rope, installing the lifting beam on the other half of the roller by using the travelling crane, and installing the other half of the roller by using the same method;

e3: after the two half cylinders are mounted in place and the brake discs are all aligned, the following principles must be followed: the two dial indicators respectively measure the axial and radial runout of each brake disc, and accord with the regulated value, constructors use hydraulic wrenches to complement and fasten the connecting bolts in the roller according to the torque requirement, after the connecting bolts in the roller are completely fastened, the connecting clamp plate on the side surface of the roller is installed, then the connecting bolts between the brake discs and the bearing are fastened, and finally the connecting bolts between the roller and the brake discs are fastened;

e4: filling oil into the roller bearing by using special oil for bearing lubricating grease, and rotating the roller by using the hanging strip in cooperation with the travelling crane to fill up the liner on the roller; in the gap time of installing the liner, installing electrical accessories such as an encoder, an electric brush, a tachogenerator and a connecting cable on a slip ring on the side of the slip ring, welding the connection between a binding post of the slip ring and a busbar by a professional, and recovering the connection between the connecting cable of the stator and the busbar between the two half roller windings;

e5: the four groups of disc brakes are reinstalled and aligned by a traveling crane, a protective sleeve of a main oil inlet and outlet pipe port of a hydraulic oil pipe of each disc brake is removed, the oil inlet and outlet pipes of each disc brake are connected and fastened, a manual ball valve of an oil inlet and flushing pipeline of each disc brake is opened, the end face of a brake disc is used as a reference, a pressure adjusting brake cylinder of a western vehicle hydraulic station is matched with a dial indicator to enable the gaps between brake shoes on two sides and the brake disc to be consistent, and after the four groups of disc brakes are installed and aligned, foundation bolts are installed by a hydraulic wrench.

8. The method for rapidly replacing a roller of a large-scale mine hoist as claimed in claim 1, wherein in step S7, the bearing grease is FAG LOAD400.

9. The method for rapidly replacing the roller of the large-scale mine hoist as claimed in claim 1, wherein in step S7, the idle operation is performed according to the following principle:

f1: and (3) oiling after the installation is finished, and filling LP leadless ashless anti-wear hydraulic oil into the hydraulic station, wherein the filling is required to be completed, and dust is strictly prevented from entering.

F2: after the flat cable is checked to be correct, power is transmitted, the idle running test run is continuously carried out for at least 8 hours, and the flat cable is rotated positively and negatively for 4 hours respectively;

f3; after idle running, constructors open the bearing end covers at two sides, the bearing ball stress of the bearing is adjusted according to the stress deviation of the bearing ball actually measured on site and design requirements, and after the adjustment meets the requirements, the bearing cover fastening bolts at two sides are sealed to recover to be normal.

10. The method for rapidly replacing a large-sized elevator drum in a mine according to claim 9, wherein in step S7, the load operation is performed according to the following principle:

g1: after idling is normal, the air ducts on the north and south sides are restored section by section according to requirements by utilizing a travelling crane, the air ducts are connected and sealed well, and bolts are fastened well;

g2: placing the western-style vehicle lifting ropes into rope grooves corresponding to new rollers one by using an eight-floor traveling vehicle, continuously and synchronously withdrawing the ropes after sinking and stabilizing the vehicle, and lifting the western-style vehicle lifting ropes until the I-shaped steel is dismantled by using a skip; dismantling temporary facilities such as a side-pedal tank girder of the auxiliary skip and a well mouth steel plate lining flat base by using a stable vehicle and a crane; synchronously releasing the rope for sinking the shaft and stabilizing the vehicle to enable the skip to fall, and removing the rope locking device on the side of the western vehicle main skip after the shaft sinking and stabilizing rope is not stressed; informing a driver of the elevator to lift the auxiliary skip at an overhaul speed, dismantling a steel wire rope between passengers, dismantling a pulley block by utilizing the upper and lower running of the auxiliary skip in cooperation with a stable vehicle, and moving the dismantled temporary facility out of a wellhead room through a crane;

g3: the west car elevator driver firstly starts at a low speed, the speed is gradually increased, the speed is divided into several levels, on one speed level, the speed is determined to have no problem after being operated for many times, and then the speed is increased to the previous speed level until the speed is full, and the full-speed operation time is not less than 8 hours;

g4: the idle bearing cap fastening bolt operation is repeated.

Images