CN111017690B - Method for replacing steel cage guide of shaft of multi-rope friction type elevator - Google Patents
Method for replacing steel cage guide of shaft of multi-rope friction type elevator Download PDFInfo
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- CN111017690B CN111017690B CN202010058038.XA CN202010058038A CN111017690B CN 111017690 B CN111017690 B CN 111017690B CN 202010058038 A CN202010058038 A CN 202010058038A CN 111017690 B CN111017690 B CN 111017690B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
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Abstract
The invention relates to a method for replacing a steel cage guide of a multi-rope friction type elevator shaft. The method mainly comprises the steps of designing and installing an overhaul platform and an overhaul protection shed which can be fixed on a hoisting steel wire rope according to safety requirements, the length of a replaced cage guide and the space in a shaft, matching with facilities such as a hoisting container, a wellhead winch, a guide pulley and an opening pulley, hoisting a new cage guide to the hoisting container, lowering the hoisting container to a cage guide replacing position, and replacing the steel cage guide through personnel operation. According to the invention, two cage guides can be replaced at a time, so that the maintenance time of the cage guides is greatly reduced, and the maintenance efficiency is improved. The maintenance platform and the maintenance protective shed are installed on the hoisting steel wire rope, so that the operation safety of shaft operation personnel is improved, and the potential safety hazard is reduced.
Description
Technical Field
The invention relates to a method for replacing a cage guide, in particular to a method for replacing a steel cage guide of a shaft of a multi-rope friction type elevator.
Background
When the multi-rope friction type elevator shaft steel cage guide is used, the surface of the cage guide is abraded in different degrees, and when the requirements of safety regulations cannot be met, the cage guide needs to be replaced. With the increasingly severe operation form of gold mines, the requirements on the time for improving system maintenance and safety performance standards are higher and higher. In the prior art, only one guide can be installed by single lowering in the process of replacing the guide, repeated lowering is needed for multiple times, the guide is long in use time, and operating personnel in a shaft do not have a firm and reliable operating platform, so that high potential safety hazards exist.
Disclosure of Invention
The invention provides a method for replacing a steel cage guide of a multi-rope friction type elevator shaft, which improves the operation safety, and can directly replace two cage guides by single lowering, thereby greatly reducing the maintenance time of a lifting system.
In order to solve the technical problems, the invention adopts the following technical scheme:
the method for replacing the steel cage guide of the multi-rope friction type elevator shaft is characterized by comprising the following steps:
(1) aligning the first layer of maintenance platform with a wellhead, sealing the side wellhead when the lifting container is slow down, installing a maintenance protection shed on a lifting steel wire rope, then lifting the container slowly, installing a third layer of maintenance platform on the lifting steel wire rope, continuously lifting the container slowly, and installing a second layer of maintenance platform on the lifting steel wire rope;
(2) dismantling the upper roller cage shoe of the hoisting container, fixing a guide pulley at a side steel beam of a wellhead winch, and pulling a steel wire rope by using the winch to penetrate through the guide pulley and put the guide pulley at the wellhead for standby;
(3) the lifting container continues to slowly go up until the first layer of overhaul platform is flush with the wellhead, the first layer of overhaul platform on the overhaul tool carried by the first layer of overhaul personnel waits for overhaul, then the lifting container slowly goes down until the second layer of overhaul platform is flush with the wellhead, the second layer of overhaul platform on the overhaul tool carried by the second layer of overhaul personnel waits for overhaul, the lifting container continues to slowly go down until the third layer of overhaul platform is flush with the wellhead, and the third layer of overhaul platform on the overhaul tool carried by the third layer of overhaul personnel waits for overhaul;
(4) after the maintainers are in place, the container is lifted slowly, a steel wire rope pulled by a winch is placed at a steel beam 16 meters above a well mouth from the inner side of the steel beam of the shaft, and an opening pulley is hung on the winch side and the signal side of the steel beam 16 meters above the well mouth respectively; then, slowly lifting the container, releasing the rope by using a winch, enabling a steel wire rope drawn by the winch to pass through an opening pulley on the winch side, and pulling a rope head to a wellhead signal side; the container is lifted to be slowly lowered until the maintenance protective shed is flush with the well mouth;
(5) the winch is unreeled to the well head signal side to place a new cage guide, a first new cage guide is dragged to the winch side of the lifting container by a steel wire rope, and the first new cage guide is fixed on each layer of the maintenance platform after the first new cage guide is in place; then slowly lifting the container, moving a traction steel wire rope in a winch side-opening pulley at a position 16 meters above the wellhead into a signal side-opening pulley, lifting a second new cage guide to the signal side of the lifting container by the same method, and fixing the second new cage guide on each layer of the maintenance platforms;
(6) lifting the container slowly to a position 4 meters above the guide to be replaced, and respectively hanging a rope buckle and a chain block on the center position of the old guide and the guide beam on one side of the old guide; the maintainers of the third layer of maintenance platform process the old cage guide back plate and the bolts, then hang the rope buckle at the center of the upper part of the old cage guide, hang the old cage guide by using the inverted chain at the cage guide beam at one side of the old cage guide, and then sequentially carry out operation by the maintainers of the second layer of maintenance platform and the first layer of maintenance platform; after the operation of the first layer of maintenance platform maintainers is finished, moving the old cage guide to one side, and sequentially processing the joint surface of the old cage guide and the steel beam by the three layers of maintenance platforms from top to bottom; then, the maintainers of the third layer of maintenance platform tie the head of the new tank with a steel wire rope buckle, use a chain block which is hung in the center of the old tank in advance to position the new tank, penetrate through a tank bolt from top to bottom, and fasten a retaining nut after the maintainers of each layer of maintenance platform adjust the new tank;
(7) placing the replaced old cage guide fixed by the chain block on the cage guide beam on an overhauling platform, fixing the old cage guide by each layer of overhauling platform, lifting the container slowly after the fixing is finished, and removing the two chain blocks and the rope buckles for lifting the new cage guide and the old cage guide at the cage guide beam position 4 meters above the replaced cage guide; after the removal is finished, replacing the cage guide at the other side of the lifting container at the position of the cage guide to be replaced, and slowly lifting the lifting container to the wellhead after the second old cage guide is replaced;
(8) when the lifting container slowly rises until the third layer of maintenance platform is flush with the well head, well head personnel are matched with maintenance personnel of the third layer of maintenance platform, and the old cage guide is placed on the well head through a winch traction steel wire rope until the two cage guides are completely replaced; by parity of reasoning, the replacement of the rest cage guide is carried out according to the same method;
(9) after the whole changes of cage guide finish, promote container to near the well head, the maintainer of three-layer maintenance platform unloads maintenance instrument to the well head in proper order respectively, closes the well head, removes each layer maintenance platform from bottom to top in proper order, removes the opening coaster of 16 meters departments that the well head upwards, resumes the above 4 meters department girder steel of well head signal side, resumes to promote container upper gyro wheel cage shoe.
As a further improvement of the invention:
before the cage guide is repaired, the following preparation work is carried out:
(1) heightening the lifting container with a maintenance layer and welding a guardrail to serve as a first-layer maintenance platform;
(2) removing the steel beam 4 meters above the signal side of the wellhead, so as to facilitate the lowering of the cage guide;
(3) measuring the size of the cage guide needing to be replaced, welding the processed back plate on the new cage guide on the ground surface, and transporting the new cage guide processed on the ground surface to a wellhead for later use;
(4) and manufacturing an overhaul platform: three I-shaped platforms are processed in advance, protective guards are installed on the I-shaped platforms, carrying channels used for lowering a new cage guide and lifting an old cage guide are arranged on two sides of each I-shaped platform respectively, one I-shaped platform is used as an overhauling protective shed, a protective cover is hinged to the carrying channel of the overhauling protective shed, and the other two I-shaped platforms are used as overhauling platforms.
The invention has the following beneficial effects:
1. according to the invention, two cage guides can be replaced at a time, so that the maintenance time of the cage guides is greatly reduced, and the maintenance efficiency is improved;
2. according to the invention, the maintenance platform and the maintenance protective shed are arranged on the hoisting steel wire rope, so that the operation safety of shaft operating personnel is improved, and the potential safety hazard is reduced;
3. the hoisting of the new cage guide and the recovery of the old cage guide are completed on the ground near the wellhead, so that the operation safety is improved;
4. the maintenance platform is fixed on the lifting steel wire rope by matching the steel wire rope board and the bolt, so that the size is small, the weight is light, the installation is convenient, the installation time is short, the labor intensity is reduced, and the maintenance efficiency is further improved;
5. the maintenance platform both sides set up the hand-carrying channel who is used for transferring new cage guide and promotes new cage guide, have improved the work efficiency who overhauls, have further reduced the potential safety hazard of operation in the maintainer pit shaft simultaneously.
Drawings
FIG. 1 is a schematic illustration of a wellbore cage guide replacement in an embodiment of the present invention;
FIG. 2 is a schematic side view of an embodiment of the present invention;
FIG. 3 is a schematic top view of an inspection and protection shed according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a second floor service platform according to an embodiment of the present invention;
wherein, 1, cage guide; 2. overhauling a protective shed; 3. a third layer of maintenance platform; 4. hoisting a steel wire rope; 5. a second floor of service platforms; 6. a steel wire rope plate card; 7. a first layer of service platform; 8. lifting the container; 9. a winch; 10. a traction wire rope; 11. a guide pulley; 12. a new cage guide; 13. an opening pulley; 21. a protective cover; 31. a carrying channel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
First, early preparation
(1) Overhauling and debugging the well head, and winding phi 12.5 steel wire ropes for 100 meters on two 10-ton winches to manufacture rope heads; checking a coupler pin, oiling a speed reducer, checking a brake and installing a winch distribution board.
(2) And heightening the lifting container maintenance layer to 3.8 meters, installing a maintenance platform and welding a guardrail.
(3) And the dialing telephone signals of all the middle section wharf doors are overhauled and debugged, so that the sensitivity and reliability are ensured.
(4) And floating hair and sundries on the shaft and steel beams at each well mouth are cleaned to ensure the maintenance safety.
(5) And dismantling the steel beam 4 meters above the signal side of the wellhead, so as to be convenient for lowering the cage guide.
(6) The size of the guide which needs to be replaced is measured by a steel tape (50 m), the processed back plate is welded on the new guide on the ground surface, the back plate and the new guide are continuously welded, and the height of a welding seam is not less than the thickness of the back plate (the same ruler is used for measuring the old guide and the new guide in order to avoid steel ruler errors). Welding new cage guides (4 back plate holes and the size of the other end by taking one end as a reference) according to the measured 5 sizes of the cage guides required to be replaced.
(7) And conveying the new tank pipeline processed on the ground surface to a wellhead for later use.
(8) Laying, overhauling and lighting at the wellhead; the well bore is sprinkled with water and fire-proof one shift in advance.
(9) And manufacturing an overhaul platform: three I-shaped platforms are processed in advance, protective guards are installed on the I-shaped platforms, carrying channels used for lowering a new cage guide and lifting an old cage guide are arranged on two sides of each I-shaped platform respectively, one I-shaped platform serves as an overhauling protective shed, a protective cover is hinged to the carrying channel of the overhauling protective shed, and the other two I-shaped platforms serve as overhauling platforms.
Step two, replacing the steel cage guide of the vertical shaft
(1) And installing and overhauling the platform: aligning a first layer of maintenance platform 7 (a lifting container with a maintenance platform) with a wellhead, recording the position of the lifting container 8 at the moment, slowly descending the lifting container 8 by 9.6 meters, sealing the side wellhead, and installing a maintenance protective shed 2 on a lifting steel wire rope 4 by matching a steel wire rope plate card 6 with a bolt; then, the container 8 is lifted by 3 meters slowly, and a third layer of maintenance platform 3 is installed on the lifting steel wire rope 4 according to the installation mode of the maintenance protective shed 2; the hoisting container 8 continues to go up 4 meters slowly, and the second layer of maintenance platform 5 is installed on the hoisting steel wire rope 4 in the same way, and the installation direction of the three-layer maintenance platform in the embodiment is from top to bottom, so that repeated disassembly and well head sealing are avoided.
(2) And installing a guide pulley: and (3) dismantling upper roller cage ears of the lifting container 8, fixing a 3t guide pulley 11 at a side steel beam of the wellhead winch, and drawing a steel wire rope 10 by using a winch 9 to penetrate through the 3t guide pulley 11 to reserve allowance to be placed at the wellhead for later use.
(3) And the maintainer takes place: the lifting container 8 continues to slowly ascend until the first layer of overhaul platform 7 is flush with the well mouth, after personnel materials reach the well mouth, two sets of gas cutting tools, other tools and materials are placed on the first layer of overhaul platform 7 by the first layer of overhaul platform, and safety belts are tied to wait for overhaul; then slowly lifting the container 8 until the second layer of maintenance platform 5 is flush with the wellhead, and then two persons of the second layer of maintenance platform bring tools and materials to the second layer of maintenance platform, and fasten safety belts to wait for maintenance; and the lifting container 8 continues to slowly descend until the third layer maintenance platform 3 is flush with the wellhead, the third layer maintenance platform is arranged on the third layer maintenance platform by two persons, tools and materials are taken, a safety belt is tied to wait for maintenance, and the safety belt is tied to the first rope and is ensured not to extend out of the container.
(4) And installing an opening pulley: after the maintainer takes one's place, the container 8 is lifted slowly, the protective covers 21 of the channels 31 are correspondingly carried on two sides of the maintenance protective shed 2 are opened, then the well mouth and a third layer maintenance platform worker are matched to place the traction steel wire rope 10 at the position of a steel beam 16 meters above the well mouth from the inner side of a steel beam of the well barrel, a 3t opening pulley 13 is respectively hung on the winch side and the signal side of the steel beam 16 meters above the well mouth, the angle of the 3t opening pulley 13 is adjusted on site according to the position of a tank changing way, after the 3t opening pulley 13 is installed, the container 8 is lifted slowly, a winch 9 releases a rope, the third layer maintainer pulls the steel wire rope 10 to pass through the 3t opening pulley on the winch side, and pulls the rope head to the signal side of the well mouth. The lifting container 8 continues to be lowered slowly until the maintenance shelter 2 is level with the wellhead.
(5) And two sides of the lifting container are respectively fixedly provided with a new cage guide: the winch 9 is unreeled to the well head signal side to place a new cage guide, the steel wire rope head is tied to the head back plate of the new cage guide by using a 3-meter rope buckle (the head and tail positions of the new cage guide are consistent with those of the replaced old cage guide), a big rope is tied to the tail of the new cage guide by using a 3t buckle, and a person pulls the big rope to match the winch 9 to place the first new cage guide in the winch side of the lifting container 8. (notice the cage guide angle, prevent that the backplate from scraping and bumping, new cage guide is transferred in the new personnel cooperation on each layer maintenance platform when new cage guide goes into maintenance platform), new cage guide is fixed in winch side carryway 31 with the iron wire at each layer maintenance platform after new cage guide is put.
Then the container 8 is lifted slowly, a third-layer maintenance platform worker moves a traction steel wire rope 10 in a winch-side 3t opening pulley at a position 16 meters above the well mouth into a signal-side 3t opening pulley, a second new cage guide is lifted by the same method and placed on the signal side of the container 8, and after the second new cage guide is placed, the second new cage guide is fixed in a carrying channel 31 of the signal side by using iron wires on each layer of maintenance platform.
(6) And lowering a new cage guide: the traction cable 10 is positioned at a proper position, and the protective cover 21 of the overhaul protective shed 2 is covered. The lifting container 8 is maintained at a low speed of 0.7-1 m/s manually until the position of the cage guide to be replaced, the interphone is used for informing the wellhead lifter to slowly move up (down) to the position of the cage guide beam 4 meters above the cage guide to be replaced, a rope buckle and a 1t inverted chain are hung at the center position of the old cage guide, and a rope buckle and a 1t inverted chain are hung on the cage guide beam at one side of the old cage guide.
(7) And installing a new cage guide: after the container 8 is lifted to the position of the tank guide to be replaced slowly (the position is ensured that the operators of the three-layer maintenance platform operate conveniently in the mean square mode and are mastered by the operators of the third-layer maintenance platform), the operators of the third-layer maintenance platform begin to process the back plate and the bolts of the old tank guide by using hand hammers, then the bolts and the welding points of the back plate are subjected to gas cutting, after the processing is finished, the central position of the upper part of the old tank guide is hung with a rope fastener, and 1t of chain blocks at one side of the old tank guide are used for hanging and just exerting force. Then the staff of the second layer of maintenance platform carries out the operation, and after the second layer of maintenance platform operation is finished, the staff of the first layer of maintenance platform carries out the operation (the cutting slag is caught by special tools when the tank guide is cut and fire protection must be paid attention to).
After the first layer of maintenance platform operating personnel processes the back plate bolts, one person uses a small crowbar to pry the old cage guide, the other person holds the old cage guide (the operating personnel of the second and third layer of maintenance platforms are matched simultaneously), after the old cage guide leaves the cage guide steel beam, the old cage guide is moved to one side, the three layer of maintenance platforms sequentially process the joint surfaces of the old cage guide and the steel beam from top to bottom, then the operating personnel of the third layer of maintenance platform ties a steel wire rope buckle at the position of the new cage guide, which is about 300-400mm away from the head, hangs the new cage guide with 1t of inverted chains hung in advance at the center of the old cage guide to just exert strength, loosens all iron wires of the first new cage guide, slightly pulls the 1t of inverted chains at the center of the hung cage guide before the old cage guide is disassembled to position the new cage guide, and ensures that the distance between the two ends of the newly installed cage guide and the joint of the two connected old cage guides which are not replaced is 2-4mm, the dislocation is not more than 1mm (three visible surfaces at the joint of the new cage guide and the old cage guide are uniformly dislocated and are not more than 2 mm). According to actual conditions, counterboring is carried out on the back plate hole corresponding to the beam according to the sequence from top to bottom, cage guide bolts are inserted, operating personnel of each layer of maintenance platform slightly tighten the bolts respectively, after the three layers are tightened, a new cage guide is adjusted according to specified standards, and all bolts are firmly fixed and tightened by matching of a solid wrench and a ring spanner at each layer.
(8) Dismantling the old cage guide: the replaced old cage guide fixed by 1t of inverted chains on the cage guide beam is gently put down and is placed on a carrying channel 31 of the maintenance platform, each layer is fixed by iron wires, after the fixation is finished, an interphone contact signal lifts the container 8 slowly, and two 1t inverted chains and rope buckles for lifting the new cage guide at the cage guide beam 4 meters above the replaced cage guide are removed.
After the removal is finished, the staff uses the interphone to contact the signal worker to find the position of the guide to be replaced on the other side of the lifting container 8, and the guide on the other side is replaced by the method. After the replacement is finished, the lifting container 8 is slowly lifted, two 1t inverted chains and rope buckles for lifting the new cage guide and the old cage guide are lifted at the steel beam 4m above the second cage guide after the replacement is removed, and after the removal is finished, a worker contacts the lifting container 8 to reach the wellhead at the speed of 0.7-1 m/s by using the interphone.
(9) And moving the old tank pipeline to a wellhead: when the lifting container 8 slowly rises until the third layer of maintenance platform 3 is flush with the wellhead, the lifting machine stops, the wellhead personnel transmit the rope head of the winch to the maintenance personnel of the third layer of maintenance platform, and by means of shackle, the rope fastener is connected to the position about 300-400mm away from the head of the old cage guide, iron wires for lifting the old cage guide are unfastened at each layer and hold the old cage guide, the winch 9 is slowly lifted until the tail of the old cage guide is lifted to be slightly higher than the level of the well opening (when the old cage guide is required to be kept to be installed during lifting, the old cage guide is attached to the well opening and then slides upwards from the front of the cage guide so as to avoid scraping and clamping of a back plate), a signal side maintainer of the well opening transfers a large rope to an operating staff on the maintenance platform to be tied to the back plate of the old cage guide firmly, the winch 9 is slowly released, the old cage guide is placed at the well opening by manual slow pulling and mutual cooperation of the staff of the well opening, the second old cage guide is lifted out of the maintenance platform to the well opening by the same method, and the replacement of the two cage guides is finished.
And by parity of reasoning, the replacement of the residual cage guide is carried out according to the same method.
(10) Dismantling the tool: after the cage guide is completely replaced, the container 8 is lifted to the position near a well mouth, and the maintainers of the maintenance platforms on the third layer, the second layer and the first layer sequentially unload materials and tools to the well mouth respectively. The well mouth is sealed with the plank, removes the maintenance platform from bottom to top in proper order, removes 16 meters department cable tie, opening coaster 13, resumes the well mouth signal side above 4 meters department girder steel, resumes to promote 8 upper gyro wheel cage shoes of container, accomplishes this time and changes cage guide maintenance work.
According to the safety requirements, the length of the replaced cage guide and the space in the shaft, the invention designs and installs an overhaul platform and a protective shed which can be fixed on a lifting steel wire rope, and the overhaul platform and the protective shed are matched with facilities such as a lifting container, a 10t winch at the wellhead, a guide and lifting pulley in the shaft and the like, so that the new cage guide is lifted to the lifting container, the lifting container is lowered to the cage guide replacing position, and the steel cage guide is replaced through the operation of personnel. According to the shaft steel cage guide replacement maintenance platform and the protective shed, the cage guide replacement maintenance platform and the protective shed are designed and used independently according to the well space, the plate cards and the bolts are fixed on the lifting steel wire ropes, the personal safety of shaft operation personnel is effectively guaranteed, the safety of shaft operation is improved, the cage guide replacement process can replace two cage guides simultaneously according to the replacement position and the replacement requirement, the replacement efficiency is effectively improved, and powerful support is provided for innovation of the shaft steel cage guide replacement process of the friction type lifting machine of a mine enterprise and benefit improvement.
Claims (1)
1. A method for replacing a steel cage guide of a multi-rope friction type elevator shaft is characterized by comprising the following steps:
(1) aligning the first layer of maintenance platform with a wellhead, sealing the side wellhead when the lifting container is slow down, installing a maintenance protection shed on a lifting steel wire rope, then lifting the container slowly, installing a third layer of maintenance platform on the lifting steel wire rope, continuously lifting the container slowly, and installing a second layer of maintenance platform on the lifting steel wire rope;
(2) dismantling the upper roller cage shoe of the hoisting container, fixing a guide pulley at a side steel beam of a wellhead winch, and pulling a steel wire rope by using the winch to penetrate through the guide pulley and put the guide pulley at the wellhead for standby;
(3) the lifting container continues to slowly go up until the first layer of overhaul platform is flush with the wellhead, the first layer of overhaul platform on the overhaul tool carried by the first layer of overhaul personnel waits for overhaul, then the lifting container slowly goes down until the second layer of overhaul platform is flush with the wellhead, the second layer of overhaul platform on the overhaul tool carried by the second layer of overhaul personnel waits for overhaul, the lifting container continues to slowly go down until the third layer of overhaul platform is flush with the wellhead, and the third layer of overhaul platform on the overhaul tool carried by the third layer of overhaul personnel waits for overhaul;
(4) after the maintainers are in place, the container is lifted slowly, a steel wire rope pulled by a winch is placed at a steel beam 16 meters above a well mouth from the inner side of the steel beam of the shaft, and an opening pulley is hung on the winch side and the signal side of the steel beam 16 meters above the well mouth respectively; then, slowly lifting the container, releasing the rope by using a winch, enabling a steel wire rope drawn by the winch to pass through an opening pulley on the winch side, and pulling a rope head to a wellhead signal side; the container is lifted to continue to slowly descend until the maintenance protective shed is flush with the wellhead;
(5) the winch is unreeled to the well head signal side to place a new cage guide, a first new cage guide is dragged to the winch side of the lifting container by a steel wire rope, and the first new cage guide is fixed on each layer of the maintenance platform after the first new cage guide is in place; then slowly lifting the container, moving a traction steel wire rope in a winch side-opening pulley at a position 16 meters above the wellhead into a signal side-opening pulley, lifting a second new cage guide to the signal side of the lifting container by the same method, and fixing the second new cage guide on each layer of the maintenance platforms;
(6) lifting the container slowly to a position 4 meters above the guide to be replaced, and hanging rope buckles and chain blocks on the guide beams corresponding to the center of the old guide and one side of the old guide; the maintainers of the third layer of maintenance platform process the back plate and the bolts of the old cage guide, then hang the rope buckle at the center of the upper part of the old cage guide, hang the old cage guide by using the inverted chain at the cage guide beam at one side of the old cage guide, and then sequentially carry out operation by the maintainers of the second layer of maintenance platform and the first layer of maintenance platform; after the operation of the first layer of maintenance platform maintainers is finished, moving the old cage guide to one side, and sequentially processing the joint surface of the old cage guide and the steel beam by the three layers of maintenance platforms from top to bottom; then, the maintainers of the third layer of maintenance platform tie the head of the new tank with a steel wire rope buckle, position the new tank in the tank by using a chain block which is hung in advance and corresponds to the center position of the old tank on the tank beam, penetrate a tank bolt from top to bottom, and fasten a retaining nut after the maintainers of each layer of maintenance platform adjust the new tank;
(7) placing the replaced old cage guide fixed by the chain blocks on the cage guide beams on the maintenance platform, fixing the old cage guide by each layer of maintenance platform, lifting the container slowly after the fixing is finished, and removing the two chain blocks and the rope buckles for lifting the new cage guide at the cage guide beam 4 meters above the replaced cage guide; after the removal is finished, replacing the cage guide at the other side of the lifting container at the position of the cage guide to be replaced, and slowly lifting the lifting container to the wellhead after the second old cage guide is replaced;
(8) when the lifting container slowly moves up to the third layer of maintenance platform and is level with the well head, well head personnel are matched with maintenance personnel of the third layer of maintenance platform, and the old tank way is placed on the well head through a winch traction steel wire rope, so that the two tank ways are completely replaced; by parity of reasoning, the replacement of the residual cage guide is carried out according to the same method;
(9) after the cage guide is completely replaced, lifting the container to the position near a well mouth, sequentially unloading the maintenance tools to the well mouth by the maintenance personnel of the three-layer maintenance platform, sealing the well mouth, sequentially removing the maintenance platforms at all layers from bottom to top, removing an opening pulley at the position 16 meters above the well mouth, recovering a steel beam at the position 4 meters above the signal side of the well mouth, and recovering and lifting an upper roller cage shoe of the container;
the following preparation work is required before the cage guide is repaired:
(1) heightening the lifting container with a maintenance layer and welding a guardrail to serve as a first-layer maintenance platform;
(2) removing the steel beam 4 meters above the signal side of the wellhead, so as to facilitate the lowering of the cage guide;
(3) measuring the size of the cage guide needing to be replaced, welding the processed back plate on the new cage guide on the ground surface, and transporting the new cage guide processed on the ground surface to a wellhead for later use;
(4) and manufacturing and overhauling the platform: three I-shaped platforms are processed in advance, protective guards are installed on the I-shaped platforms, carrying channels used for lowering a new cage guide and lifting an old cage guide are arranged on two sides of each I-shaped platform respectively, one I-shaped platform serves as an overhauling protective shed, a protective cover is hinged to the carrying channel of the overhauling protective shed, and the other two I-shaped platforms serve as overhauling platforms.
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| CN202010058038.XA CN111017690B (en) | 2020-01-19 | 2020-01-19 | Method for replacing steel cage guide of shaft of multi-rope friction type elevator |
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| CN111792500B (en) * | 2020-07-27 | 2022-02-22 | 山东黄金矿业（玲珑）有限公司 | Method for replacing tail rope of floor type friction hoist |
| CN114701941B (en) * | 2022-04-01 | 2023-08-04 | 安徽马钢矿业资源集团姑山矿业有限公司 | Improvement method of novel tank road wood |
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| JPS525175B2 (en) * | 1972-02-15 | 1977-02-10 | ||
| JP2004010175A (en) * | 2002-06-03 | 2004-01-15 | Mitsubishi Electric Corp | Lifting device for elevator guide rail |
| CN107055290A (en) * | 2017-04-24 | 2017-08-18 | 淮南矿业(集团)有限责任公司 | The method changed using first-rope hinger to head sheave |
| CN107651545A (en) * | 2017-10-31 | 2018-02-02 | 淮南矿业(集团)有限责任公司 | The construction platform of construction is changed for shaft borehole cage conductor |
| CN108516450B (en) * | 2018-04-19 | 2020-02-14 | 中煤科工集团南京设计研究院有限公司 | Method for quickly replacing large skip bucket of coal mine |
| JP7064962B2 (en) * | 2018-05-25 | 2022-05-11 | 株式会社日立ビルシステム | Guide rail installation workbench system and its control method |
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2020
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