Mine fixed shaft power cable bottom temporary lifting gun avoiding method

Abstract

The invention relates to the technical field of mine shaft cable protection, in particular to a method for temporarily lifting the bottom of a mine fixed shaft power cable to avoid blasting. According to the technical scheme, the device comprises a mine shaft, a hanging scaffold and a power cable are arranged in the mine shaft, and the bottom end of the power cable is connected with the hanging scaffold. Through cooperation of the hanging scaffold, the pulling twisted rope, the winding and unwinding winch, the stretch bending mechanism and other structures, the hanging scaffold is suspended in the mine vertical shaft through the hanging scaffold rope, the power cable and the air duct fixed to the shaft wall are synchronously fixed, and the end, exceeding the air duct, of the power cable is connected with the hanging scaffold. During cannon avoiding, the ground winch of the hanging scaffold rope is started to lift the hanging scaffold, the winding and unwinding winch winches and pulls the twisted rope, and the tension bending mechanism is driven by the pulley to lift the bottom end of the power cable to prevent the power cable from being located in a blasting area. The stretch bending mechanism clamps the cable through a first clamping wheel and a second clamping wheel, a spiral abutting rod is matched with a rubber abutting block for limiting, the cable is bent gently, the operation space of the hanging scaffold is released, and the cable is prevented from being damaged due to improper bending.

Description

Technical Field

[0001] This invention relates to the field of protection technology for mine shaft cables, and in particular to a method for temporarily lifting the bottom of a fixed mine shaft power cable to avoid blasting. Background Technology

[0002] During the excavation and construction of mine shafts, the main shaft sinking facilities include a hoisting platform (as a working platform), a steel wire rope for suspending the hoisting platform (commonly known as a "hoisting platform rope"), a ventilation duct for shaft ventilation, and a power cable for supplying power to the hoisting platform. All of these facilities need to be lowered from the surface shaft opening to the working face inside the shaft.

[0003] Currently, the vast majority of shaft excavation operations still employ explosive blasting. Therefore, before detonation, the hoisting platform, ventilation duct, and power cables within the shaft must be raised to a certain height to avoid damage from the shockwave and flying debris generated by the blast, ensuring the safety of the facilities. The hoisting platform, suspended by wire ropes, can be lifted simply by winding the ropes upwards using a surface winch. There are two common methods for lifting and protecting the ventilation duct: one is to use wire ropes for suspension, lifting it synchronously with other facilities; the other is to fix it to the shaft wall, ensuring the ventilation outlet is always positioned a fixed distance above the hoisting platform during operation. This distance must meet the ventilation requirements of the hoisting platform during normal operation, so that when the hoisting platform is lifted to avoid blasting, the ventilation duct does not need to be moved to meet the blasting requirements.

[0004] Power cables used for underground power supply are usually suspended along the same rope as the hoisting platform or via a separate cable. However, in some scenarios where shaft space is limited, the power cable must be simultaneously fixed to the ventilation duct that is fixed to the shaft wall. Since the power cable needs to connect to the hoisting platform to provide power, its length must exceed the fixed distance from the ventilation duct outlet to the hoisting platform. This means that when the hoisting platform is raised to avoid a blast, this excess power cable must be bent and placed on the hoisting platform. This operation occupies a significant amount of space on the hoisting platform, compressing the working area; furthermore, the power cable has a large diameter, making bending difficult, and the actual degree of bending often fails to meet the technical requirements for the minimum bending radius of the cable, easily causing damage. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a method for temporarily lifting the bottom of the power cable of a fixed vertical shaft in a mine to avoid blasting.

[0006] The technical solution of this invention: A method for temporarily lifting the bottom of a power cable in a fixed vertical shaft in a mine to avoid blasting, comprising a mine shaft, wherein a hoisting platform and a power cable are provided inside the mine shaft, the bottom end of the power cable is connected to the hoisting platform, and the top of the hoisting platform is provided with a plurality of hoisting ropes arranged in a circumferential array, further comprising: a winding winch fixedly installed on the top of the hoisting platform, wherein the hoisting platform is provided with a rope that is wound by turning the winding winch; a support mechanism installed on one of the hoisting ropes, wherein the support mechanism allows the rope to pass through; and a bending mechanism disposed at one end of the power cable near the hoisting platform, wherein the bending mechanism is linked to the winding winch and is used to bend the end of the power cable near the hoisting platform.

[0007] Optionally, the bending mechanism includes a first and a second chuck that clamp the power cable and are correspondingly positioned vertically. The first and second chucks are fixedly connected by a pair of connecting plates. A pair of rotating plates are rotatably connected to both the first and second chucks. A rotating abutment is fixedly connected to the middle of each pair of rotating plates away from the first and second chucks.

[0008] Optionally, a central sleeve block is fixedly connected to the middle of the pair of connecting plates and is movably sleeved with the power cable. A spiral abutment is spirally inserted on the central sleeve block, and a rotating handle is fixedly connected to the end of the spiral abutment away from the central sleeve block.

[0009] Optionally, a rubber abutment is fixedly connected to the end of the spiral abutment away from the rotating handle.

[0010] Optionally, the outer wall of the rotating handle is provided with multiple anti-slip grooves arranged in a circumferential array.

[0011] Optionally, the support mechanism includes a wire rope sleeve that is connected to the hoisting rope. One end of the wire rope sleeve, which is fitted into the hoisting rope, is fixedly fitted with a fixing sleeve. The fixing sleeve is screwed with a locking bolt whose end abuts against the outer wall of the hoisting rope. The end of the wire rope sleeve away from the fixing sleeve is fitted with a pulley for pulling the winch rope through.

[0012] Optionally, the hanging platform adopts a two-layer structure, with a ladder at the top and a ladder opening corresponding to the ladder inside the ladder.

[0013] Optionally, the outer wall of the hoisting platform is rotatably connected to multiple rolling abutments arranged in a circular array and closely attached to the inner wall of the mine shaft.

[0014] Optionally, the mine shaft is equipped with a ventilation duct inside, and the inner wall of the mine shaft is also equipped with a plurality of support sleeves arranged in a linear pattern and fixedly connected to the ventilation duct. The support sleeves are also fixedly connected to the power cable.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This invention utilizes a combination of a suspended platform, a pulling rope, a winding winch, and a bending mechanism. The suspended platform is first suspended inside the mine shaft by a platform rope. The power cable is simultaneously fixed to the ventilation duct on the shaft wall, with the end of the power cable extending beyond the ventilation duct connected to the suspended platform. During blasting avoidance, the surface winch on the platform rope is activated to lift the platform, while simultaneously winding the pulling rope. This, via pulleys, drives the bending mechanism to lift the bottom end of the power cable, preventing it from being in the blast zone. The bending mechanism uses first and second chucks to clamp the cable, with a helical abutment and rubber blocks for restraint, allowing the cable to bend smoothly. This frees up working space on the suspended platform and prevents damage to the cable due to improper bending. Attached Figure Description

[0016] Figure 1 A structural schematic diagram of a method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting is provided according to the present invention. Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 for Figure 1 A schematic diagram of the split structure; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 for Figure 4 Enlarged view of point D in the middle; Figure 7 for Figure 5 A partial cross-sectional structural diagram.

[0017] Attached reference numerals: 1. Mine shaft; 2. Hoisting platform; 21. Rolling abutment wheel; 22. Ladder; 23. Ladder opening; 3. Hoisting platform rope; 4. Power cable; 5. Ventilation duct; 6. Support sleeve; 7. Pulling rope; 8. Winding winch; 9. Connecting plate; 91. First chuck wheel; 92. Second chuck wheel; 93. Rotating plate; 94. Rotating abutment rod; 95. Center sleeve block; 96. Rotating handle; 97. Spiral abutment rod; 98. Rubber abutment block; 10. Wire rope sleeve; 101. Fixing sleeve; 102. Locking bolt; 11. Pulley. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0024] like Figures 1 to 7As shown, this invention proposes a method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting. The method includes a mine shaft 1, which serves as the core space for excavation and lining operations. The shaft provides the basic environment for the installation and operation of all working facilities, including the hoisting platform 2, power cable 4, and ventilation duct 5, and is the carrier of the entire blasting avoidance system. The mine shaft 1 is equipped with the hoisting platform 2 and the power cable 4. The hoisting platform 2 serves as a working platform within the shaft 1 for personnel to carry out excavation and lining operations; it also provides a mounting carrier for equipment such as the winch 8. Simultaneously, the ladder opening 23 at its top cooperates with the ladder 22 to allow personnel to move up and down the hoisting platform 2. The power cable 4 provides power support for the working equipment and personnel operating on the hoisting platform 2; it is also synchronously fixed to the ventilation duct 5, which is fixed to the shaft wall, via a support clamp 6. The portion of the cable exceeding the length of the ventilation duct 5 can be lifted using a bending mechanism during blasting avoidance to prevent it from being in the blasting zone. The bottom end of the power cable 4 is connected to the hoisting platform 2. The top of the hoisting platform 2 is equipped with multiple hoisting ropes 3 arranged in a circular array. One end of each rope 3 is connected to a surface winch, and the other end suspends the hoisting platform 2. The hoisting platform 2 is raised and lowered within the mine shaft 1 by the operation of the surface winch, meeting the needs of blast avoidance or adjustment of the working position. A retraction winch 8 is fixedly installed on the top of the hoisting platform 2. The retraction winch 8, when activated, winds or releases the pull rope 7, providing power to the pull rope 7, thereby controlling the raising and lowering of the bending mechanism and the bottom end of the power cable 4. This is one of the power sources for lifting the power cable 4 to avoid blasting. The hoisting platform 2 is equipped with a pull rope 7 that is winded and released by activating the retraction winch 8. Under the wind action of the retraction winch 8, the pull rope 7 changes the direction of force through the pulley 11, driving the bending mechanism and the raising and lowering of the bottom end of the power cable 4, thus temporarily lifting the power cable 4 to avoid blasting.

[0025] Among them, such as Figure 3 , Figure 5 and Figure 7As shown, a bending mechanism is provided at the end of the power cable 4 near the lifting platform 2. The bending mechanism is linked to the winding winch 8. The bending mechanism is used to bend the end of the power cable 4 near the lifting platform 2. The bending mechanism includes a first clamping wheel 91 and a second clamping wheel 92 that clamp the power cable 4 and are correspondingly positioned above and below it. The first clamping wheel 91 is fixedly connected by a connecting plate 9. Both clamp the power cable 4 together. During the bending and lifting process of the power cable 4, the first clamping wheel 91 clamps and limits the power cable 4 from above, preventing the power cable 4 from shifting and reducing friction between the power cable 4 and the bending mechanism. The second clamping wheel 92 works with the first clamping wheel 91 to clamp the power cable 4 from below, ensuring that the power cable 4 remains stable during bending and lifting, preventing it from falling off or shifting. The first retaining roller 91 and the second retaining roller 92 are fixedly connected by a pair of connecting plates 9. A pair of rotating plates 93 are rotatably connected to both the first retaining roller 91 and the second retaining roller 92. During the bending process of the power cable 4, the rotating plates 93 can rotate with the bending angle of the cable, causing the rotating abutment 94 to conform to the outer wall of the cable for auxiliary guidance. A rotating abutment 94 is fixedly connected to the middle of each pair of rotating plates 93, away from the first retaining roller 91 and the second retaining roller 92. The rotating abutment 94 plays an auxiliary guiding role during the bending and lifting of the power cable 4, ensuring that the power cable 4 bends smoothly along a preset path and avoiding damage from improper bending.

[0026] In addition, such as Figure 3 , Figure 5 and Figure 7 As shown, a central sleeve block 95 is fixedly connected to the middle of a pair of connecting plates 9, and is movably sleeved with the power cable 4. The central sleeve block 95, movably sleeved with the power cable 4, provides an installation carrier for the spiral abutment rod 97, and through its sleeve engagement with the power cable 4, it plays a preliminary positioning role in the bending mechanism on the power cable 4. The spiral abutment rod 97 is spirally inserted into the central sleeve block 95. The spiral abutment rod 97 moves spirally by rotating the handle 96, causing the rubber abutment block 98 to move closer to or away from the power cable 4, thereby adjusting the limiting force on the power cable 4. The end of the spiral abutment rod 97 away from the central sleeve block 95 is fixedly connected to the rotating handle 96. The rotating handle 96 is convenient for personnel to grip and rotate, and by rotating it, the spiral abutment rod 97 moves within the central sleeve block 95, thereby adjusting the tightness of the rubber abutment block 98 against the power cable 4. A rubber block 98 is fixedly connected to the end of the spiral rod 97 away from the rotating handle 96. The rubber block 98 presses against the outer wall of the power cable 4 under the push of the spiral rod 97, which on the one hand stabilizes and limits the power cable 4, and on the other hand, the rubber material can prevent hard damage to the outer wall of the power cable 4. The outer wall of the rotating handle 96 has multiple anti-slip grooves distributed in a circumferential array.

[0027] It is worth noting that, such as Figure 2 and Figure 4As shown, a support mechanism is installed on one of the hoisting ropes 3. The support mechanism allows the pulling rope 7 to pass through. The support mechanism includes a wire rope sleeve 10 that is fitted onto the hoisting rope 3. The wire rope sleeve 10 provides a mounting and support carrier for the pulley 11. (Wire rope clips can also be used to fix the hoisting rope 3. Wire rope clips, also known as wire rope clamps or wire rope clamps, are mechanical fasteners used to fix, connect, or secure wire ropes. They are widely used in lifting, hoisting, transportation, and construction fields. Their core function is to prevent the end of the wire rope from loosening or slipping, or to achieve a reliable connection between two sections of wire rope, ensuring the safe transmission of load.) One end of the wire rope sleeve 10, which is fitted into the hoisting rope 3, is fixedly fitted with a fixing sleeve 101. The fixing sleeve 101 is pressed against the outer wall of the hoisting rope 3 by the end of a locking bolt 102, stably fixing the wire rope sleeve 10 onto the hoisting rope 3 and preventing the wire rope sleeve 10 from slipping. The fixed sleeve 101 is spirally fitted with a locking bolt 102, the end of which abuts against the outer wall of the hoisting rope 3. By tightening the locking bolt 102, the end of which abuts against the outer wall of the hoisting rope 3, locking the relative position between the wire rope sleeve 10 and the hoisting rope 3, ensuring the stability of the wire rope sleeve 10 and the pulley 11, and ensuring the normal transmission of the pulling rope 7. The end of the wire rope sleeve 10 away from the fixed sleeve 101 is equipped with a pulley 11 for the pulling rope 7 to pass through. The pulley 11 is hung at the end of the wire rope sleeve 10 away from the fixed sleeve 101, allowing the pulling rope 7 to pass through. By rotating itself, it changes the direction of the force on the pulling rope 7, so that the tension generated by the winding winch 8 can be effectively transmitted to the bending mechanism, while reducing the frictional resistance when the pulling rope 7 moves.

[0028] Furthermore, such as Figure 1 and Figure 4 As shown, the hoisting platform 2 adopts a two-layer structure. A ladder 22 is installed at the top of the hoisting platform 2, with corresponding ladder openings 23, providing workers with a passageway to move up and down between different levels of the hoisting platform 2 or between other areas, facilitating equipment maintenance and operation. Inside the ladder 22, corresponding ladder openings 23 serve as entrances and exits for personnel, ensuring smooth and safe passage for personnel. Multiple rolling rollers 21, arranged in a circular array and closely attached to the inner wall of the mine shaft 1, are rotatably connected to the outer wall of the hoisting platform 2. These rolling rollers 21, by adhering closely to the inner wall of the mine shaft 1, guide and stabilize the hoisting platform 2 during its lifting and lowering process, preventing swaying and deviation, and ensuring stable operation.

[0029] Furthermore, such as Figure 1 and Figure 4As shown, the mine shaft 1 is equipped with a ventilation duct 5, which is mainly used to provide ventilation for the working face inside the mine shaft 1, ensuring the air quality of the underground working environment and meeting the breathing and work safety requirements of personnel. The inner wall of the mine shaft 1 is also equipped with multiple linearly arranged support sleeves 6 that are fixedly connected to the ventilation duct 5. The support sleeves 6 serve to support and fix both the ventilation duct 5 and the power cable 4, ensuring their stable position within the mine shaft 1. The support sleeves 6 are also fixedly connected to the power cable 4.

[0030] In this embodiment, when using the temporary lifting method for avoiding blasting at the bottom of the fixed vertical shaft power cable in a mine, the basic assembly of each component is completed first: the hoisting platform 2 is suspended inside the mine shaft 1 by the hoisting platform rope 3, and the rolling abutment wheel 21 on the outer wall of the hoisting platform 2 is in close contact with the inner wall of the mine shaft 1 to ensure the stability of the hoisting platform 2 in raising and lowering. Personnel can enter the ladder 22 through the ladder opening 23 to realize the movement of the hoisting platform 2 up and down; the ventilation duct 5 is fixed to the inner wall of the mine shaft 1 by the support sleeve 6, and the power cable 4 is fixed synchronously with the ventilation duct 5 and the end is fixed. Extending to the hanging platform 2 to meet power supply requirements; a winding winch 8 is installed on the top of the hanging platform 2, and a wire rope sleeve 10 is placed on the hanging platform rope 3. The position of the wire rope sleeve 10 is locked by the fixing sleeve 101 and the locking bolt 102. The end of the wire rope sleeve 10 away from the fixing sleeve 101 is suspended by a pulley 11. Pulling the winch 7 connects one end to the winding winch 8, and the other end passes through the pulley 11 and is connected to the bending mechanism. The bending mechanism is placed on the end of the power cable 4 near the hanging platform 2 by the central sleeve block 95.

[0031] When it is necessary to temporarily lift the power cable 4 to avoid blasting, the hoisting platform 2 moves upward and the winding winch 8 is started. The winding winch 8 winds and pulls the winch rope 7. After the winch rope 7 changes the direction of force through the pulley 11, it drives the bending mechanism to move upward as a whole, thereby pulling the power cable 4 close to the end of the hoisting platform 2 and lifting it up synchronously, so as to avoid the power cable 4 being in the blasting impact area. If the bending angle of the power cable 4 needs to be adjusted to fit the space or meet the minimum bending radius requirement, rotate the rotating handle 96. The rotating handle 96 drives the spiral abutment rod 97 to move spirally within the central sleeve block 95. The rubber abutment block 98 at the end of the spiral abutment rod 97 then presses against the outer wall of the power cable 4, forming a stable limit on the power cable 4. At the same time, the first chuck 91 and the second chuck 92 connected to the connecting plate 9 clamp the power cable 4 from the upper and lower sides. When the rotating plate 93 rotates around the first chuck 91 and the second chuck 92, it drives the rotating abutment rod 94 to conform to the outer wall of the power cable 4 for auxiliary guidance, so that the power cable 4 can bend smoothly along the preset path during the traction and lifting process of the bending mechanism, avoiding damage caused by improper bending.

[0032] After the blast avoidance operation is completed, the winch 8 is started in the reverse direction to release the pulling rope 7. The bending mechanism slowly descends as the pulling rope 7 loosens, and the power cable 4 gradually returns to its initial power supply position under its own gravity. If the bending mechanism needs to be disassembled, the rotating handle 96 is turned in the reverse direction to make the rubber block 98 detach from the power cable 4, and then the central sleeve 95 is removed from the power cable 4. The component can be stored or transferred without affecting the subsequent shaft excavation and construction operations.

[0033] The preferred embodiments of the present invention described above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for temporarily lifting the bottom of a power cable in a fixed mine shaft to avoid blasting, comprising a mine shaft (1), wherein a hoisting plate (2) and a power cable (4) are provided inside the mine shaft (1), the bottom end of the power cable (4) is connected to the hoisting plate (2), and the top of the hoisting plate (2) is provided with a plurality of hoisting ropes (3) arranged in a circular array, characterized in that, Also includes: A winding winch (8) is fixedly installed on the top of the hanging platform (2). The hanging platform (2) is equipped with a winding rope (7) that can be wound and pulled by opening the winding winch (8). A support mechanism is installed on one of the hoisting ropes (3), the support mechanism being through which the pulling rope (7) passes; A bending mechanism is provided at one end of the power cable (4) near the hanging plate (2). The bending mechanism is linked to the winding winch (8). The bending mechanism is used to bend the end of the power cable (4) near the hanging plate (2).

2. The method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 1, is characterized in that... The bending mechanism includes a first chuck (91) and a second chuck (92) that clamp the power cable (4) and are corresponding to each other. The first chuck (91) and the second chuck (92) are fixedly connected by a pair of connecting plates (9). A pair of rotating plates (93) are rotatably connected to the first chuck (91) and the second chuck (92). A rotating abutment (94) is fixedly connected to the middle of the pair of rotating plates (93) away from the first chuck (91) and the second chuck (92).

3. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 2, is characterized in that... A central sleeve block (95) is fixedly connected to the middle of a pair of connecting plates (9) and is movably sleeved with a power cable (4). A spiral push rod (97) is spirally inserted on the central sleeve block (95), and a rotating handle (96) is fixedly connected to one end of the spiral push rod (97) away from the central sleeve block (95).

4. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 3, is characterized in that... A rubber abutment (98) is fixedly connected to the end of the spiral abutment (97) away from the rotating handle (96).

5. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 3, is characterized in that... The outer wall of the rotating handle (96) is provided with multiple anti-slip grooves arranged in a circumferential array.

6. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 1, is characterized in that... The support mechanism includes a wire rope sleeve (10) that is connected to the hoisting rope (3). One end of the wire rope sleeve (10) that is fitted into the hoisting rope (3) is fixedly fitted with a fixing sleeve (101). The fixing sleeve (101) is spirally fitted with a locking bolt (102) whose end abuts against the outer wall of the hoisting rope (3). The end of the wire rope sleeve (10) away from the fixing sleeve (101) is fitted with a pulley (11) for pulling the winch (7) through.

7. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 1, is characterized in that... The hanging platform (2) adopts a two-layer structure. The top of the hanging platform (2) is provided with a ladder (22), and the inside of the ladder (22) is provided with a ladder opening (23) corresponding to the ladder (22).

8. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 1, is characterized in that... The outer wall of the hanging platform (2) is rotatably connected to multiple rolling abutment wheels (21) arranged in a circular array and closely attached to the inner wall of the mine shaft (1).

9. A method for temporarily lifting the bottom of a fixed vertical shaft power cable in a mine to avoid blasting, as described in claim 1, is characterized in that... The mine shaft (1) is equipped with a ventilation duct (5) inside. The inner wall of the mine shaft (1) is also equipped with a number of support sleeves (6) arranged in a linear shape and fixedly connected to the ventilation duct (5). The support sleeves (6) are also fixedly connected to the power cable (4).

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