CN113716436A - Method for replacing lifting container of vertical shaft friction type lifting machine - Google Patents
Method for replacing lifting container of vertical shaft friction type lifting machine Download PDFInfo
- Publication number
- CN113716436A CN113716436A CN202110905530.0A CN202110905530A CN113716436A CN 113716436 A CN113716436 A CN 113716436A CN 202110905530 A CN202110905530 A CN 202110905530A CN 113716436 A CN113716436 A CN 113716436A
- Authority
- CN
- China
- Prior art keywords
- rope
- cage
- skip
- new
- pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012423 maintenance Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 105
- 239000010959 steel Substances 0.000 claims description 105
- 239000000725 suspension Substances 0.000 claims description 72
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000002023 wood Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000003381 stabilizer 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
- B66B19/04—Installing or removing mining-hoist cars, cages, or skips
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention relates to a method for replacing a friction type lifting container of a vertical shaft, which comprises the steps of preparation work before cage maintenance, old cage dismantling, new cage installation, skip replacement and the like.
Description
Technical Field
The invention relates to a method for replacing a lifting container of a vertical shaft friction type lifting machine, and belongs to the technical field of mining equipment.
Background
The replacement of a lifting container of a shaft hoist is always a difficult problem in shaft maintenance in the mine industry, and the most common replacement modes of the lifting container of the multi-rope friction hoist at present comprise the following two modes: one is to directly replace the large-scale equipment by a crane, and the large-scale equipment is difficult to put down underground due to the narrow operation space of a shaft, so that the method is not suitable for an underground hoister; the other replacement method is that a platform is laid in a shaft, after a head rope and a tail rope are removed, an old lifting container is directly disassembled in the shaft, and a new lifting container is directly assembled in the shaft.
Disclosure of Invention
The invention provides a method for replacing a lifting container of a vertical shaft friction type lifting machine, which solves the technical problems of low maintenance efficiency, high labor intensity and high potential safety hazard of the conventional lifting container.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for replacing a friction type lifting container of a vertical shaft is characterized by comprising the following steps: the method comprises the following steps:
preparation work before cage overhaul
1) Unloading the skip counter weight;
2) installing a 5T bend pulley and a wellhead dispatching winch at a wellhead, hanging a 5T pulley on an anti-collision beam at the top of a shaft on the cage side, penetrating a steel wire rope of the wellhead dispatching winch through the 5T bend pulley at the wellhead, then penetrating the 5T pulley on the anti-collision beam upwards, and finally returning the steel wire rope to the wellhead for later use;
3) two steel wire rope sleeves are hung on the cage side of a girder below a lower head sheave, a guide pulley of a cage side car stabilizing rope is hung on a wellhead vertical beam, a steel wire rope of the wellhead cage side car stabilizing rope is upwards changed by the guide pulley, then passes through a fixed pulley and a movable pulley to assemble a pulley block, and the rope head is firmly clamped by the steel wire rope; hoisting the assembled pulley block by using a well head dispatching winch, hanging the pulley block on two long steel wire rope sleeves, and lowering the steel wire rope of the well head dispatching winch to a well head for later use after the pulley block is installed;
(II) old cage dismantling step
1) A maintainer goes up a cage maintenance layer, lifts the cage up and detaches two cage guides on two sides of the cage;
2) after the cage guide is dismantled, the cage overhaul layer is lowered, personnel on the cage overhaul layer withdraw from the cage overhaul layer, then the cage is lifted up again, and the cage is stopped until the connecting position of the tail rope and the bottom of the cage is positioned at the well head;
3) laying an overhaul platform below a wellhead cage, connecting one tail rope with a steel beam on one side far away from a skip bucket through a steel wire rope and 7 pairs of U-shaped rope clamps, lowering the cage until the steel wire rope is stressed, stopping the cage, disassembling a tail rope connecting device between the tail rope and the cage, disassembling the tail rope connecting device between the other tail rope and the cage in the same way, and completing the disassembly of the tail rope;
4) the first rope on the side of the skip bucket is locked on a lower-layer platform of a lower head sheave by a rope locking device, a hand-pulling block is hung on a beam above the lower head sheave platform, the four first ropes on the side of the cage are locked by two pairs of combined plate clamps by the platform of the lower head sheave, and the two pairs of combined plate clamps are pulled by the hand-pulling block;
5) after the tail rope is removed, two oil cylinders of a second rope and a third rope of the old cage are decompressed, the suspension devices of the second rope and the third rope are disconnected with the old cage, the suspension devices of the second rope and the third rope are fixed on a shaft steel beam after being disconnected, and a steel wire rope of a stable vehicle on the side of the cage is lowered, so that a movable pulley in a pulley block is lowered to the top of the old cage; connecting the top of the old cage with a pulley block by means of a steel wire rope sleeve and a shackle, and forcibly hanging the old cage through the pulley block;
6) starting a cage side stabilizing vehicle, lifting the old cage through a pulley block to enable the first rope and the fourth rope to be loosened and then stopping, disconnecting the suspension devices of the first rope and the fourth rope from the old cage, and fixing the suspension devices of the first rope and the fourth rope after disconnection on a shaft steel beam until the four first ropes of the cage are removed;
7) after the tail rope and the head rope are removed, a rope head of a skip side stable vehicle at the well mouth is pulled to the well mouth and then is connected with the bottom of the cage by virtue of a steel wire rope sleeve, the skip side stable vehicle is started to pull the old cage outwards from the shaft, meanwhile, the cage side stable vehicle is properly loosened and slowly released, and the process is repeated, so that the old cage is pulled out of the well mouth;
8) disconnecting the pulley block from the top of the cage, placing the pulley block at a well mouth for standby, disconnecting the rope head of the skip side stable vehicle from the bottom of the old cage, transporting the old cage away from the field of the well mouth, and disassembling and transporting the old cage to the ground after the new cage is installed;
(III) mounting step of new cage
1) Assembling the new cage at the wellhead in advance, moving the new cage to the wellhead, and stopping the new cage maintenance layer 1m away from the shaft;
2) connecting the top of a new cage with a pulley block through a steel wire rope sleeve and a shackle, connecting the bottom of the new cage with a skip side stable steel wire rope head through the steel wire rope sleeve and the shackle, slowly lifting the cage side stable vehicle, gradually hoisting the pulley block, slowly releasing the skip side stable vehicle, adjusting the angle of the new cage, and repeating for multiple times until the new cage enters a shaft;
3) after the position of a new cage is adjusted, a lateral stable vehicle of the cage is forced, a first rope suspension device and a fourth rope suspension device are connected with the top of the new cage, the first rope suspension device and the fourth rope suspension device are forced to suspend the new cage, a pulley block is loosened to disconnect the pulley block from the top of the new cage, a first rope oil cylinder and a fourth rope oil cylinder are pressed and lifted to the highest position, the suspension devices of the second rope and the third rope are connected with the new cage in the same method, and the suspension devices of the four first ropes are completely installed;
4) after the first rope is installed, tail ropes are installed, the rope heads of the skip bucket side car stabilizing steel wires are disconnected with the bottom of the new cage, and the two tail ropes are respectively connected with tail rope pin holes in the bottom of the new cage;
5) dismantling a maintenance platform laid on a well head, dismantling a combined plate clamp on a first rope on the cage side and a rope locking device on a first rope on the skip side, and lifting a pulley block for later use; restoring the installation of the removed cage guide; the test run is carried out at a slow speed, and the replacement work of the cage is finished;
and (IV) replacing the skip.
As a further improvement of the present invention, the skip replacement is different from the cage replacement in that:
(I) the preparation work before the skip is overhauled is different with the preparation work before the cage is overhauled in step:
1) hanging a 5T pulley on an anti-collision beam at the top of a shaft at the skip side, wherein a steel wire rope of a well mouth dispatching winch penetrates through a 5T bend pulley at the well mouth, then penetrates through the 5T pulley on the anti-collision beam at the skip side upwards, and finally returns to the well mouth downwards for standby;
2) hanging two wire rope sleeves on the skip of a girder below a lower head sheave, hoisting a pulley block by using a well head dispatching winch, moving the pulley block from the two wire rope sleeves on the cage side to the two wire rope sleeves on the skip side, hanging the pulley block on the two wire rope sleeves on the skip side, and lowering a wire rope of the well head dispatching winch to a well head for later use after the pulley block is installed;
(II) the old skip is dismantled and the old cage is dismantled differently in steps:
1) after the two tail ropes on the skip side are removed, a rope selection exchanging device on the lower head sheave skip side overhauling platform is connected with the first rope and the fourth rope, the first rope and the fourth rope are lifted through the rope selection exchanging device to enable the second rope and the third rope to be loose, then the suspension devices of the second rope and the third rope are disconnected with the cage, and the suspension devices of the second rope and the third rope after disconnection are fixed on a shaft steel beam; lowering a steel wire rope of the cage side stable vehicle to enable a movable pulley in the pulley block to be lowered to the top of the skip; the pulley block is connected with the top of a new skip through a steel wire rope sleeve and a shackle, and the skip is hung by the pulley block with force;
2) locking a first rope at the side of the cage on a lower-layer platform of a lower head sheave by using a rope locking device, hanging a 2-ton chain block on a cross beam above an upper head sheave platform, locking four first ropes at positions, close to a rope path, of the platform of an upper head sheave by using two pairs of combined plate cards, and pulling the two pairs of combined plate cards by using the 2-ton chain block hung on the cross beam above the upper head sheave platform;
3) lifting the skip on the cage side stable vehicle, stopping the cage side stable vehicle after the first rope and the fourth rope are loosened, disconnecting the first rope and the fourth rope from the rope selection exchanging device, disconnecting the suspension devices of the first rope and the fourth rope from the skip, fixing the suspension devices of the disconnected first rope and the fourth rope on a shaft steel beam by iron wires, and completing the dismantling of the four first ropes on the skip side;
(III) the installation of the new skip and the installation of the new cage are different in steps:
1) after a new skip enters a shaft and the position of the new skip is adjusted, a cage side stable vehicle is lifted, a first rope suspension device and a fourth rope suspension device are connected with the new skip, the first rope suspension device and the fourth rope suspension device are enabled to suspend the new skip with strength, the cage side stable vehicle is lowered to disconnect a pulley block from the top of the new skip, then a rope selection exchanging device on a lower head sheave skip side overhauling platform is connected with the first rope and the fourth rope, the first rope suspension device and the third rope suspension device are connected with the new skip, after the second rope and the third rope are connected with the new skip, the rope selection exchanging device is disconnected with the first rope and the fourth rope suspension device, and the installation of the four first ropes is completed.
Compared with the prior art, the invention has the following beneficial effects:
1. the cage and the skip bucket are directly and integrally replaced in the shaft, and a lifting container does not need to be assembled and disassembled in the shaft, so that the potential safety hazard is reduced, the overhaul time is greatly reduced, the overhaul efficiency is improved, and the labor intensity of overhaul personnel is reduced;
2. according to the invention, the lifting container is lifted by means of the cage side stable vehicle assembly pulley block of the well mouth, the skip side stable vehicle of the well mouth is used for pulling the bottom of the lifting container to perform angle adjustment, so that the lifting container is convenient to integrally disassemble and assemble in a narrow space of a shaft, and the pulley block and the first rope of the lifting container are used for replacing and suspending the lifting container, so that additional equipment is not required to be arranged for dragging and lowering the lifting container, the overhauling efficiency is improved, and the labor intensity of an overhauling worker is reduced;
3. the invention does not need to carry out electrogas welding and other firing operations required by the disassembly of the old container and the assembly of the new container in the shaft, avoids the occurrence of mine underground fire caused by slag and welding slag splashed in the firing operations, reduces the potential safety hazard and reduces the labor intensity of maintainers.
Detailed Description
The present invention will be described in detail with reference to examples.
The embodiment is a method for replacing a lifting container of a vertical shaft friction type lifting machine, and particularly relates to a nine-bend-70 blind vertical shaft floor type four-rope friction lifting machine which is a skip and cage mixed well.
Preparation work before cage maintenance
1) And (4) unloading the skip counter weight.
2) A5T bend pulley and a wellhead dispatching winch are installed on a wellhead, a 5T pulley is hung on an anti-collision beam on the top of a shaft on the cage side, a steel wire rope of the wellhead dispatching winch penetrates through the 5T bend pulley on the wellhead, then penetrates through the 5T pulley on the anti-collision beam upwards, and finally returns to the wellhead downwards for later use.
3) Two steel wire rope sleeves with the length of 6m phi 24 are hung on the side of a cage of a girder below the lower head sheave, and seamless pipes are welded on the edges of the girder which is in contact with the steel wire rope sleeves to protect the steel wire rope sleeves. An H10 multiplied by 1 pulley is hung on a wellhead vertical beam to be used as a guide pulley of a cage side car stabilizing rope. After the steel wire rope of the side stable car of the wellhead cage is upwards changed by the guide pulley, the steel wire rope passes through the fixed pulley and the movable pulley which are arranged up and down in advance to assemble the pulley block, and the rope head is firmly clamped by 6Y-22 steel wire ropes. And hoisting the assembled pulley block to two 6m phi 24 long wire rope sleeves on the side of the cage by using a wellhead dispatching winch, hanging the pulley block on the two 6m phi 24 long wire rope sleeves through a 32t shackle, and lowering the wire rope of the wellhead dispatching winch to a wellhead for later use after the pulley block is installed.
Second, old cage dismantling step
1) Move cage maintenance layer to the well head, make things convenient for the maintainer from top to bottom, four maintainers go up cage maintenance layer, and the cage lifts, begins to tear open the cage guide, makes the mark with paint when demolising. And locking the disassembled cage guide by using a steel wire rope of a well head dispatching winch during dismantling, and then hoisting the dismantled cage guide to the well head through the well head dispatching winch to be far away from an operation site. Two cage guides are respectively dismantled at two sides of the cage.
2) After the cage guide is dismantled, the cage maintenance layer is transferred and is returned the well head, and cage maintenance layer personnel withdraw the cage maintenance layer, then lift cage (0.1 m/s) once more, park about leaving well head 3m until the cage bottom, and the tail rope is located well head department with the hookup location of cage bottom this moment, conveniently demolishs the tail rope. The cage is held when lifted to prevent the cage from being clamped.
3) Lay the maintenance platform with the plank below the well head cage, walk around the girder steel that the skip one side was kept away from to the cage with diameter 21.5 wire rope, be connected through 7 pairs of U type rope clips and one of them tail rope, slowly transfer the cage, stop until diameter 21.5 wire rope atress, dismantle the tail rope connecting device between this tail rope and cage. And at the moment, the bottom of the cage is still positioned above the wellhead, the tail rope connecting device between the other tail rope and the cage is disassembled in the same way, and the tail rope is completely disassembled.
4) The lower-layer platform of the lower head sheave of the skip side rope is locked by the rope locking device, so that the skip is prevented from moving after the old cage is dismantled. A2-ton chain block is hung on a cross beam above a lower head sheave platform, four head ropes on the side of a cage are clamped by two pairs of combined plate clamps at the position, close to a rope channel, of the platform of the lower head sheave, and the two pairs of combined plate clamps are pulled by the 2-ton chain block, so that the head ropes between the lower head sheave and a winch room are prevented from falling.
5) After the tail rope is dismantled, the maintainer goes up the cage maintenance layer through the ladder room of well head, overhauls the layer at the cage and closes the valve of the first rope linkage hydro-cylinder and No. four, and two hydro-cylinders of the first rope of No. two and No. three in the middle of the pressure release, are connected with the linkage of first rope and No. two and No. three with old cage disconnection, and the linkage of the first rope for No. two and No. three after the disconnection is fixed on the pit shaft girder steel with the iron wire. And (4) lowering the steel wire rope of the cage side stabilizing vehicle to lower the movable pulley in the pulley block to the top of the old cage.
Two ends of a steel wire rope sleeve with the length of 2m phi 24 are respectively connected with a second pin hole and a third pin hole of the old cage by two 20T shackles (the second pin hole and the third pin hole are the connecting positions of the cage before the cage is separated from a second rope and a third rope), the steel wire rope sleeve is connected with a pulley block by a 32T shackle (namely the steel wire rope sleeve is hung on a movable pulley of the pulley block), and the old cage is firmly hung by the pulley block.
6) And starting the cage side stable vehicle, lifting the old cage through the pulley block to enable the first rope and the fourth rope to be loosened, stopping the cage side stable vehicle, disconnecting the suspension devices of the first rope and the fourth rope from the old cage, fixing the suspension devices of the first rope and the fourth rope after disconnection on a shaft steel beam by using iron wires, and completing the dismantling of the four first ropes of the cage.
7) After the tail rope and the head rope are dismantled, the rope head of a well mouth skip side wound with 18.5 steel wire rope is dragged to the well mouth, a steel wire rope sleeve with the length of phi 18.5mm10m is hung on a tail rope pin hole at the bottom of the cage, the steel wire rope sleeve with the length of phi 18.5mm10m is connected with the rope head of the skip side car through shackle, the skip side car is started to drag the old cage outwards of the well shaft, meanwhile, the cage side car is properly loosened and slowly released, the process is repeated, the old cage is dragged out of the well mouth, the bottom of the old cage is separated from the well mouth and then placed on a flat car prepared at the well mouth in advance, and the top of the old cage is placed on another flat car prepared at the well mouth in advance after going out of the well mouth.
8) And (3) disconnecting the 32t shackle and the 2m long phi 24 steel wire rope sleeve from the pulley block, and placing the pulley block at the wellhead for later use. And (3) disconnecting the steel wire rope sleeve and the shackle which are 18.5mm in length and 10m in length from the rope head of the skip side car stabilizer, transporting the old cage to a nearby vacant site through two flat cars, and disassembling and transporting the old cage to the ground after the new cage is installed.
Step three, mounting a new cage
(1) The new cage is assembled in advance at the wellhead and placed on the flat car, and the placement state of the new cage is the same as the state of the old cage when the old cage is out of the wellhead. And then, a well mouth dispatching winch is used for being connected with the top of the cage through a shackle, the new cage is moved to a well mouth, and the new cage overhauling layer is stopped about 1m away from the shaft.
(2) Two 20T shackles are used for connecting a 2m long phi 24 steel wire rope sleeve on a second-number rope suspension pin hole and a third-number rope suspension pin hole of a new cage, a 32T shackles are used for connecting the steel wire rope sleeve with a pulley block, a phi 18.5mm10m long steel wire rope sleeve is connected on a tail rope pin hole at the bottom of the new cage, and a skip side steady steel wire rope head is connected with the phi 18.5mm10m long steel wire rope sleeve through shackles. And (3) carrying the cage side stable vehicle slowly, gradually hoisting the pulley block, slowly releasing the skip side stable vehicle, adjusting the angle of the new cage, and repeating for multiple times until the new cage enters the shaft.
(3) After the position of a new cage is adjusted, a cage side stabilizing vehicle is forced, a first rope suspension device and a fourth rope suspension device are unfastened from iron wires fixed on a shaft steel beam, the first rope suspension device and the fourth rope suspension device are connected with the new cage, a pulley block is loosened to enable the first rope suspension device and the fourth rope suspension device to suspend the new cage with force, the pulley block is continuously loosened until the pulley block is loosened, 2m long phi 24 steel wire rope sleeves on a second rope suspension pin hole and a third rope suspension pin hole of the new cage are disconnected, a first rope oil cylinder and a fourth rope oil cylinder are pressed and lifted to the highest position, the second rope suspension device and the third rope suspension device are unfastened from the iron wires fixed on the shaft steel beam, the second rope suspension device and the third rope suspension device are connected with the new cage, after all the four first rope suspension devices are installed, an oil cylinder valve is opened to start balanced pressing, and installation of the first rope suspension is completed.
(4) And (3) starting to install tail ropes after the first rope is installed, disconnecting the head of the skip bucket side stable steel wire rope from the bottom of the new cage, connecting two tail ropes with tail rope pin holes in the bottom of the new cage respectively, hanging a tail rope rotator, and locking a pin shaft on a pin. And (3) removing the combined board clamp on the first rope on the cage side and the rope locking device on the first rope on the skip side, then lifting the cage side stable car to loosen the steel wire rope with the diameter of 21.5, and then removing the steel wire rope with the diameter of 21.5 and the 7 pairs of U-shaped rope clamps for fixing the tail rope.
(5) And (4) dismantling the maintenance platform paved with the wood plates for the well mouth, and lifting the pulley block for later use.
(6) And hoisting the dismantled cage guide by using a wellhead dispatching winch for reinstallation.
(7) And (4) checking the installation condition of the new cage, carrying out slow test run after safety is confirmed, carrying out full-speed test run according to the condition, and finishing the replacement work of the cage after the adjustment and the test run are qualified.
Fourth, preparation work before overhauling skip
1) And hanging a 5T pulley on the anti-collision beam at the top of the shaft at the side of the skip, enabling a steel wire rope of a well head dispatching winch to penetrate through a 5T bend pulley at the well head, then upwards penetrate through the 5T pulley on the anti-collision beam at the side of the skip, and finally downwards return to the well head for standby.
2) Two steel wire rope sleeves with the length of 6m phi 24 are hung on the skip side of a girder below a lower head sheave, a wellhead dispatching winch is used for hoisting a pulley block, the pulley block moves from the two steel wire rope sleeves with the length of 6m phi 24 on the cage side to the steel wire rope sleeve with the length of 6m phi 24 on the skip side, the pulley block is hung on the two steel wire rope sleeves with the length of 6m phi 24 on the skip side through a 32t shackle, and after the pulley block is installed, the steel wire rope of the wellhead dispatching winch is lowered to the wellhead for standby.
Fifth, old skip dismantling work
1) After the installation of new cage is accomplished, overhaul the layer with the skip and move to the well head, four maintainers go up skip overhaul layer, and the skip lifts, begins to tear open the cage guide, makes the mark with paint when demolising. And locking the disassembled cage guide by using a steel wire rope of a well head dispatching winch during disassembly, and then hoisting the disassembled cage guide to the well head through the well head dispatching winch to be far away from an operation site. Two cage guides are respectively dismantled at two sides of the skip.
2) After the completion is demolishd to the cage guide, skip overhauls the layer and transfers and return the well head, and skip overhauls layer personnel and withdraws skip overhauls the layer, then lifts old skip (0.1 m/s) once more, parks about 3m from the well head until old skip bottom, and the tail rope is located the well head with the hookup location of old skip bottom this moment, conveniently demolishs skip side tail rope.
3) The overhauling platform is laid by a wood plate below the old wellhead skip, a steel beam with the diameter of 21.5 steel wire ropes is wound around the skip and the middle of the cage, the skip is slowly placed through 7 pairs of U-shaped rope clamps and connected with one tail rope, the skip is slowly placed until the stress of the 21.5 steel wire ropes stops, and the tail rope connecting device between the tail rope and the skip is disassembled. And at the moment, the bottom of the skip is still positioned above the wellhead, the tail rope connecting device between the other tail rope and the skip is disassembled in the same way, and the two tail ropes on the side of the skip are completely disassembled.
4) The lower-layer platform of the cage side first rope of the lower head sheave is locked by the rope locking device, so that the cage is prevented from moving after the skip is dismantled. A2-ton chain block is hung on a cross beam above an upper head sheave platform, four first ropes are clamped by two pairs of combined plate clamps at the position, close to a rope channel, of the platform of an upper head sheave, and the two pairs of combined plate clamps are pulled by the 2-ton chain block hung on the cross beam above the upper head sheave platform, so that the first ropes between the upper head sheave and a winch room are prevented from falling.
5) After two tail ropes of skip side are removed and finished, a rope selecting and exchanging device installed on a lower head sheave skip side overhauling platform is connected with a first rope and a fourth first rope, the first rope and the fourth first rope are lifted through the rope selecting and exchanging device, the second rope and the third first rope are loosened, then a suspension device of the second rope and the third first rope is disconnected with the skip, and the suspension device of the second rope and the third first rope after disconnection is fixed on a steel beam shaft by iron wires. And (4) lowering the steel wire rope of the cage side stable vehicle to ensure that the movable pulley in the pulley block is lowered to the top of the skip.
Two 20T shackles are used for connecting two ends of a 2m long phi 24 steel wire rope sleeve with a second pin hole and a third pin hole of the skip respectively, the 32T shackles are used for connecting the steel wire rope sleeve with the pulley block, the lateral car stabilization of the cage is started, and the pulley block is driven to lift the skip upwards through the car stabilization.
6) Cage side steady car lifts the skip, makes the back of relaxing with No. four first ropes, and cage side steady car parking is earlier with No. four first ropes and select rope exchange device to throw off and be connected, and throw off the linkage of No. one and No. four first ropes with the skip again, and the linkage of No. one and No. four first ropes after the throw off is fixed on the pit shaft girder steel with the iron wire, and four first ropes of skip side are demolishd and are accomplished so far.
7) After the tail rope and the head rope are dismantled, drag the steady rope head of well head skip side to the well head, hang on the tail rope pinhole of skip bottom with a long wire rope sleeve of phi 18.5mm10m, phi 18.5mm10m long wire rope sleeve and skip side steady rope head are connected with breaking out, start skip side steady handle old skip and pull to the pit shaft outward, cage side steady car is suitably loosened the rope and is put slowly simultaneously, so relapse, drag old skip out the well head on two flatbeds after the well head with old skip out equally.
8) The pulley block is disconnected with the pin holes No. two and No. three in the top of the skip, the pulley block is placed at a well head for standby application, the rope head of the skip side stabilizing vehicle is disconnected with the tail rope pin hole in the bottom of the skip, the old skip is transported to a nearby vacant site, and the new skip cage is disassembled after being installed and transported to the ground.
Sixthly, mounting the new skip
1) The new skip is assembled in advance at the wellhead and is placed on the flat car, and the placing state of the new skip is the same as the state of the old skip when the new skip is discharged from the wellhead. And then, a well head dispatching winch is used for being connected with the top of the new skip through a shackle, the new skip is moved to a well head through the well head dispatching winch, and the distance between the new skip overhauling layer and the shaft is about 1 meter.
(2) Two 20T shackles are used for connecting a 2m long phi 24 steel wire rope sleeve on a second-number rope suspension pin hole and a third-number rope suspension pin hole of a new skip, the steel wire rope sleeve is connected with a pulley block by a 32T shackles, a phi 18.5mm10m long steel wire rope sleeve is connected on a tail rope pin hole at the bottom of the new skip, and a skip side steady steel wire rope head is connected with the phi 18.5mm10m long steel wire rope sleeve by shackles. And the cage side stable car is lifted slowly, the pulley block is lifted gradually, the skip side stable car is put slowly, the angle of the new skip is adjusted, and the operation is repeated for a plurality of times until the new skip enters the shaft.
(3) After the position of the new skip is adjusted, the cage side stable vehicle is lifted up, the first rope suspension device and the fourth rope suspension device are unfastened from iron wires fixed on steel beams of a shaft, the first rope suspension device and the fourth rope suspension device are connected with the new skip, the cage side stable vehicle is placed down to enable the first rope suspension device and the fourth rope suspension device to suspend the new skip with strength, the cage side stable vehicle is continuously placed down until the pulley block is loosened, and the pulley block is disconnected from a 2m long phi 24 steel wire rope sleeve on a second rope suspension pin hole and a third rope suspension pin hole of the new skip. Then the rope selection exchanging device installed on the lower head sheave skip side overhauling platform is connected with the first rope and the fourth rope, the first rope and the fourth rope are lifted through the rope selection exchanging device, the iron wires for fixing the second rope and the third rope hanging devices with the shaft steel beam are untied, the second rope and the third rope hanging devices are connected with a new skip, and after the second rope and the third rope are connected with the new skip, the rope selection exchanging device is disconnected with the first rope and the fourth rope, and the installation of the four first ropes is completed.
(4) And (3) starting to install tail ropes after the first rope is installed, disconnecting the steel wire rope heads of the skip side stable car from the bottom of the new skip, connecting the two tail ropes with tail rope pin holes in the bottom of the new skip respectively, hanging a tail rope rotator, and locking a pin shaft on a pin. And (3) removing the combined board card on the first rope on the skip bucket side and the rope locking device on the first rope on the cage side, then lifting the cage side stable car to loosen the steel wire rope with the diameter of 21.5, and then removing the steel wire rope with the diameter of 21.5 and the 7 pairs of U-shaped rope clamps for fixing the tail rope.
(5) And (5) removing the maintenance platform paved with the wood plates for the well mouth, and removing the pulley block.
(6) Hoisting the dismantled cage guide by using a wellhead dispatching winch for reinstallation, withdrawing the wellhead dispatching winch after reinstallation of the cage side cage guide, and dismantling facilities such as a 5T bend pulley installed at the wellhead, a 5T pulley on an anti-collision beam at the top of a cage side shaft and a skip side shaft, a guide pulley on a wellhead vertical beam, a lower head sheave, a 2-ton chain block on a beam above an upper head sheave platform and the like.
(7) And (4) checking the installation condition of the new skip, carrying out slow test run after safety is confirmed, carrying out full-speed test run according to the condition, and finishing the replacement work of the skip after the adjustment and the test run are qualified.
Claims (2)
1. A method for replacing a friction type lifting container of a vertical shaft is characterized by comprising the following steps: the method comprises the following steps:
preparation work before cage overhaul
1) Unloading the skip counter weight;
2) installing a 5T bend pulley and a wellhead dispatching winch at a wellhead, hanging a 5T pulley on an anti-collision beam at the top of a shaft on the cage side, penetrating a steel wire rope of the wellhead dispatching winch through the 5T bend pulley at the wellhead, then penetrating the 5T pulley on the anti-collision beam upwards, and finally returning the steel wire rope to the wellhead for later use;
3) two steel wire rope sleeves are hung on the cage side of a girder below a lower head sheave, a guide pulley of a cage side car stabilizing rope is hung on a wellhead vertical beam, a steel wire rope of the wellhead cage side car stabilizing rope is upwards changed by the guide pulley, then passes through a fixed pulley and a movable pulley to assemble a pulley block, and the rope head is firmly clamped by the steel wire rope; hoisting the assembled pulley block by using a well head dispatching winch, hanging the pulley block on two long steel wire rope sleeves, and lowering the steel wire rope of the well head dispatching winch to a well head for later use after the pulley block is installed;
(II) old cage dismantling step
1) A maintainer goes up a cage maintenance layer, lifts the cage up and detaches two cage guides on two sides of the cage;
2) after the cage guide is dismantled, the cage overhaul layer is lowered, personnel on the cage overhaul layer withdraw from the cage overhaul layer, then the cage is lifted up again, and the cage is stopped until the connecting position of the tail rope and the bottom of the cage is positioned at the well head;
3) laying an overhaul platform below a wellhead cage, connecting one tail rope with a steel beam on one side far away from a skip bucket through a steel wire rope and 7 pairs of U-shaped rope clamps, lowering the cage until the steel wire rope is stressed, stopping the cage, disassembling a tail rope connecting device between the tail rope and the cage, disassembling the tail rope connecting device between the other tail rope and the cage in the same way, and completing the disassembly of the tail rope;
4) the first rope on the side of the skip bucket is locked on a lower-layer platform of a lower head sheave by a rope locking device, a hand-pulling block is hung on a beam above the lower head sheave platform, the four first ropes on the side of the cage are locked by two pairs of combined plate clamps by the platform of the lower head sheave, and the two pairs of combined plate clamps are pulled by the hand-pulling block;
5) after the tail rope is removed, two oil cylinders of a second rope and a third rope of the old cage are decompressed, the suspension devices of the second rope and the third rope are disconnected with the old cage, the suspension devices of the second rope and the third rope are fixed on a shaft steel beam after being disconnected, and a steel wire rope of a stable vehicle on the side of the cage is lowered, so that a movable pulley in a pulley block is lowered to the top of the old cage; connecting the top of the old cage with a pulley block by means of a steel wire rope sleeve and a shackle, and forcibly hanging the old cage through the pulley block;
6) starting a cage side stabilizing vehicle, lifting the old cage through a pulley block to enable the first rope and the fourth rope to be loosened and then stopping, disconnecting the suspension devices of the first rope and the fourth rope from the old cage, and fixing the suspension devices of the first rope and the fourth rope after disconnection on a shaft steel beam until the four first ropes of the cage are removed;
7) after the tail rope and the head rope are removed, a rope head of a skip side stable vehicle at the well mouth is pulled to the well mouth and then is connected with the bottom of the cage by virtue of a steel wire rope sleeve, the skip side stable vehicle is started to pull the old cage outwards from the shaft, meanwhile, the cage side stable vehicle is properly loosened and slowly released, and the process is repeated, so that the old cage is pulled out of the well mouth;
8) disconnecting the pulley block from the top of the cage, placing the pulley block at a well mouth for standby, disconnecting the rope head of the skip side stable vehicle from the bottom of the old cage, transporting the old cage away from the field of the well mouth, and disassembling and transporting the old cage to the ground after the new cage is installed;
(III) mounting step of new cage
1) Assembling the new cage at the wellhead in advance, moving the new cage to the wellhead, and stopping the new cage maintenance layer 1m away from the shaft;
2) connecting the top of a new cage with a pulley block through a steel wire rope sleeve and a shackle, connecting the bottom of the new cage with a skip side stable steel wire rope head through the steel wire rope sleeve and the shackle, slowly lifting the cage side stable vehicle, gradually hoisting the pulley block, slowly releasing the skip side stable vehicle, adjusting the angle of the new cage, and repeating for multiple times until the new cage enters a shaft;
3) after the position of a new cage is adjusted, a lateral stable vehicle of the cage is forced, a first rope suspension device and a fourth rope suspension device are connected with the top of the new cage, the first rope suspension device and the fourth rope suspension device are forced to suspend the new cage, a pulley block is loosened to disconnect the pulley block from the top of the new cage, a first rope oil cylinder and a fourth rope oil cylinder are pressed and lifted to the highest position, the suspension devices of the second rope and the third rope are connected with the new cage in the same method, and the suspension devices of the four first ropes are completely installed;
4) after the first rope is installed, tail ropes are installed, the rope heads of the skip bucket side car stabilizing steel wires are disconnected with the bottom of the new cage, and the two tail ropes are respectively connected with tail rope pin holes in the bottom of the new cage;
5) dismantling a maintenance platform laid on a well head, dismantling a combined plate clamp on a first rope on the cage side and a rope locking device on a first rope on the skip side, and lifting a pulley block for later use; restoring the installation of the removed cage guide; the test run is carried out at a slow speed, and the replacement work of the cage is finished;
and (IV) replacing the skip.
2. A method of replacing a friction lift vessel in a shaft as defined in claim 1 wherein: the skip is changed and cage is changed the difference lies in:
(I) the preparation work before the skip is overhauled is different with the preparation work before the cage is overhauled in step:
1) hanging a 5T pulley on an anti-collision beam at the top of a shaft at the skip side, wherein a steel wire rope of a well mouth dispatching winch penetrates through a 5T bend pulley at the well mouth, then penetrates through the 5T pulley on the anti-collision beam at the skip side upwards, and finally returns to the well mouth downwards for standby;
2) hanging two wire rope sleeves on the skip of a girder below a lower head sheave, hoisting a pulley block by using a well head dispatching winch, moving the pulley block from the two wire rope sleeves on the cage side to the two wire rope sleeves on the skip side, hanging the pulley block on the two wire rope sleeves on the skip side, and lowering a wire rope of the well head dispatching winch to a well head for later use after the pulley block is installed;
(II) the old skip is dismantled and the old cage is dismantled differently in steps:
1) after the two tail ropes on the skip side are removed, a rope selection exchanging device on the lower head sheave skip side overhauling platform is connected with the first rope and the fourth rope, the first rope and the fourth rope are lifted through the rope selection exchanging device to enable the second rope and the third rope to be loose, then the suspension devices of the second rope and the third rope are disconnected with the cage, and the suspension devices of the second rope and the third rope after disconnection are fixed on a shaft steel beam; lowering a steel wire rope of the cage side stable vehicle to enable a movable pulley in the pulley block to be lowered to the top of the skip; the pulley block is connected with the top of a new skip through a steel wire rope sleeve and a shackle, and the skip is hung by the pulley block with force;
2) locking a first rope at the side of the cage on a lower-layer platform of a lower head sheave by using a rope locking device, hanging a 2-ton chain block on a cross beam above an upper head sheave platform, locking four first ropes at positions, close to a rope path, of the platform of an upper head sheave by using two pairs of combined plate cards, and pulling the two pairs of combined plate cards by using the 2-ton chain block hung on the cross beam above the upper head sheave platform;
3) lifting the skip on the cage side stable vehicle, stopping the cage side stable vehicle after the first rope and the fourth rope are loosened, disconnecting the first rope and the fourth rope from the rope selection exchanging device, disconnecting the suspension devices of the first rope and the fourth rope from the skip, fixing the suspension devices of the disconnected first rope and the fourth rope on a shaft steel beam by iron wires, and completing the dismantling of the four first ropes on the skip side;
(III) the installation of the new skip and the installation of the new cage are different in steps:
1) after a new skip enters a shaft and the position of the new skip is adjusted, a cage side stable vehicle is lifted, a first rope suspension device and a fourth rope suspension device are connected with the new skip, the first rope suspension device and the fourth rope suspension device are enabled to suspend the new skip with strength, the cage side stable vehicle is lowered to disconnect a pulley block from the top of the new skip, then a rope selection exchanging device on a lower head sheave skip side overhauling platform is connected with the first rope and the fourth rope, the first rope suspension device and the third rope suspension device are connected with the new skip, after the second rope and the third rope are connected with the new skip, the rope selection exchanging device is disconnected with the first rope and the fourth rope suspension device, and the installation of the four first ropes is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905530.0A CN113716436A (en) | 2021-08-09 | 2021-08-09 | Method for replacing lifting container of vertical shaft friction type lifting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905530.0A CN113716436A (en) | 2021-08-09 | 2021-08-09 | Method for replacing lifting container of vertical shaft friction type lifting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113716436A true CN113716436A (en) | 2021-11-30 |
Family
ID=78675178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110905530.0A Withdrawn CN113716436A (en) | 2021-08-09 | 2021-08-09 | Method for replacing lifting container of vertical shaft friction type lifting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113716436A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929245A (en) * | 2023-01-06 | 2023-04-07 | 唐山开滦建设(集团)有限责任公司 | Shaft Shaft Closure Method |
| CN116119499A (en) * | 2023-02-16 | 2023-05-16 | 山东黄金矿业（玲珑）有限公司 | How to replace the winding hoist cage |
| CN116119500A (en) * | 2023-02-22 | 2023-05-16 | 淮南矿业(集团)有限责任公司 | Replacement method of replacement device of vertical shaft lifting container |
| CN116902735A (en) * | 2023-07-14 | 2023-10-20 | 徐州市三森威尔矿山科技有限公司 | Cage guide rope replacement method of mine hoisting system |
-
2021
- 2021-08-09 CN CN202110905530.0A patent/CN113716436A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929245A (en) * | 2023-01-06 | 2023-04-07 | 唐山开滦建设(集团)有限责任公司 | Shaft Shaft Closure Method |
| CN116119499A (en) * | 2023-02-16 | 2023-05-16 | 山东黄金矿业（玲珑）有限公司 | How to replace the winding hoist cage |
| CN116119500A (en) * | 2023-02-22 | 2023-05-16 | 淮南矿业(集团)有限责任公司 | Replacement method of replacement device of vertical shaft lifting container |
| CN116902735A (en) * | 2023-07-14 | 2023-10-20 | 徐州市三森威尔矿山科技有限公司 | Cage guide rope replacement method of mine hoisting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113716436A (en) | Method for replacing lifting container of vertical shaft friction type lifting machine | |
| CN101786570B (en) | Process for replacing hoisting ropes | |
| CN101225638A (en) | Installation Method of Prestressed Concrete Stiffened Box Girder of Ground Anchored Suspension Bridge | |
| CN104632088B (en) | Oil-well rig derrick set assembly/installation method | |
| CN111021749A (en) | Simple hoisting mechanism for bare concrete exterior wall cladding and construction method thereof | |
| CN110902549A (en) | Self-balancing tooling system and PC component hoisting method using the same | |
| CN103863972B (en) | Forklift truck lifting equipment holding tool and hanging method thereof | |
| CN101830388A (en) | Installation method of counter-weight frame of elevator | |
| CN111441732B (en) | Method for quickly replacing tool string and wellhead by combining with-pressure bridge plug perforation | |
| CN107150945B (en) | Headframe formula four-rope friction winder head rope replacing options | |
| CN112177556A (en) | Wellhead grabbing and lifting operation mode of pumping cable blowout preventer | |
| CN113264458A (en) | Tower crane system and method for removing attachment rod thereof | |
| CN211691536U (en) | Simple lifting mechanism for bare concrete exterior wall cladding | |
| CN114132839A (en) | A kind of heavy crane crane installation method | |
| CN110451392B (en) | Method for replacing head sheave bearing bush of floor type multi-rope friction hoist | |
| JP4929045B2 (en) | Guide rail installation method for machine room-less elevator | |
| WO2007117150A1 (en) | Device and method for a winch for pulling a riser up to a fixed or floating offshore installation | |
| CN109057718B (en) | Movable installation method for sinking derrick of mine vertical shaft | |
| CN114784708B (en) | Composite cable installation method for newly-built jacket | |
| CN116161564A (en) | A method of dismantling a tower crane | |
| CN106480822A (en) | A kind of suspension bridge sling replacing system and the method changing sling of suspension bridge | |
| CN111017690A (en) | Method for replacing steel cage guide of shaft of multi-rope friction type elevator | |
| CN206278860U (en) | The safe reel wire rope winding device of steel wire rope winding type ship lift | |
| CN117966593A (en) | Catwalk erection and scattered cable saddle hoisting synchronous operation construction method | |
| CN213573954U (en) | Hook hanger of traveling block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211130 |
|
| WW01 | Invention patent application withdrawn after publication |