Lifting system for double-layer steel shaft wall of vertical shaft

Abstract

The invention provides a vertical shaft double-layer steel shaft wall lifting system which comprises a base plate, a lifting rod parallel to a double-layer shaft is rotatably inserted in the base plate, a first limiting plate parallel to the base plate is fixed to the bottom of the lifting rod, and a second lifting lug is arranged at the top of the lifting rod. And the first limiting plate is rotated to be staggered with the base plate in a manner of rotating the lifting rod, so that when the double-layer shaft is lifted, the top surface of the first limiting plate can be in contact with and lift the bottom wall of the upper flange plate. The auxiliary mechanism is used for assisting in pressing the top wall of the upper flange plate corresponding to the first limiting plate in position before lifting. Hoisting connection is achieved by using the original pouring hole in the upper flange plate as a stress point, mounting and dismounting operation of the hoisting structure on the pouring hole can be efficiently completed before and after hoisting, the single-section hoisting efficiency of the double-layer shaft is improved, reutilization can be achieved, cost is saved, and it is ensured that the inner wall structure of the double-layer shaft is not damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting systems, in particular to a vertical shaft double-layer steel shaft wall hoisting system. BACKGROUND

[0002] The statements herein only provide background technology related to the present application, and do not necessarily constitute prior art.

[0003] The vertical shaft double-layer steel shaft wall has an inner diameter of 6-7 meters and an outer diameter of 7-8 meters, and is designed as a combination of inner and outer double-layer steel plates, connected by flanges from top to bottom, with a segment height of generally 6 meters. Each segment of the steel shaft wall is precisely positioned and assembled on a platform. Anchor clamps are evenly distributed around the outer periphery of the inner cylinder of the shaft wall, which ensures the firm connection between the inner concrete of the shaft wall and the shaft wall, preventing the segregation or cavity of the concrete during pouring.

[0004] The double-layer steel shaft wall is generally assembled and welded into shape in the manufacturing area. After welding, it needs to be hoisted to the concrete pouring area for pouring and forming. During hoisting, the overall rigidity and balance of the structure need to be ensured to prevent deformation or damage.

[0005] Due to the overall weight of each segment of the double-layer steel shaft wall after welding, which can reach dozens of tons, the original hoisting process is to symmetrically weld 4 lifting ears on the upper part of the inner wall of the double-layer shaft, and use 4 steel wire ropes to connect the lifting hooks through the shackles for lifting. Specifically: Before the double-layer steel shaft wall is manufactured, lifting ears need to be manufactured in advance according to the number of segments and precisely welded at the specified position of the inner wall for lifting. After the shaft wall is hoisted to the pouring station and installed, oxygen, acetylene and other cutting gases and tools need to be prepared separately to cut off the lifting ears at a height of 6 meters, and the inner wall of the steel shaft wall after cutting the lifting ears needs to be polished and repaired to ensure the overall flatness of the inner wall and avoid affecting the quality of subsequent concrete pouring.

[0006] Since the lifting ears are used only once, each segment of the shaft wall needs to be repeatedly welded and cut off, which not only increases the labor and time cost, but also causes waste of raw materials. The lifting ears are located at the top of the 6-meter-high inner wall, which poses a safety problem for high-altitude workers. After cutting, polishing and repairing are needed to ensure the quality of the inner wall of the shaft wall. Frequent hot work on the main structure may cause deterioration of material performance or deformation. In addition, the welding position of the lifting ear is located in the high stress area of the inner cylinder, and the residual welding scar may form a stress concentration point, affecting the long-term safety of the structure.

[0007] Therefore, the present application provides a detachable mechanical clamping type vertical shaft double-layer steel shaft wall hoisting system to solve the above problems. SUMMARY

[0008] The main objective of this invention is to provide a vertical shaft double-walled steel hoisting system.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows: a vertical shaft double-layer steel shaft wall hoisting system, which utilizes the casting hole of the upper flange to hoist the double-layer shaft, including a base plate that can be adapted to extend into the corresponding casting hole, a hoisting rod parallel to the double-layer shaft is rotatably inserted on the base plate, a first limiting plate parallel to the base plate is fixed at the bottom of the hoisting rod, and a second lifting lug is provided at the top of the hoisting rod; By rotating the lifting rod, the first limiting plate is rotated to be misaligned with the base plate, so that when the double-layer well shaft is lifted, the top surface of the first limiting plate can contact and support the bottom wall of the upper flange. It also includes an auxiliary mechanism, which is used to assist in pressing the top wall of the upper flange corresponding to the position of the first limiting plate before lifting.

[0010] Furthermore, the maximum rotation angle of the lifting rod is ninety degrees, and during lifting, the first limiting plate and the base plate maintain a misaligned and perpendicular state.

[0011] Furthermore, the auxiliary mechanism includes a slider sleeved on the outside of the boom and capable of relative movement with respect to the boom's axial direction. The base plate has second limiting plates parallel to the boom's axial direction on both sides of the same radial direction in the double-layer well shaft. It also includes a transmission assembly. By driving the slider to move upward relative to the boom's axial direction, the transmission assembly is triggered to synchronously drive the two second limiting plates to flip to the corresponding outside of the base plate, so that the bottom of the second limiting plates is parallel and contacts the corresponding top wall of the flange.

[0012] Furthermore, the maximum rotation angle of the second limiting plate is ninety degrees.

[0013] Furthermore, the top of the substrate is provided with a groove that mates with the slider, and the slider is provided with a through hole that mates with the gap of the lifting rod.

[0014] Furthermore, a receiving groove for accommodating the second limiting plate is provided on the corresponding side wall of the substrate.

[0015] Furthermore, the transmission assembly includes two synchronizing blocks that are fixed relative to each other on the outer wall of the slider. One end of each synchronizing block is rotatably connected to a first connecting rod, and one end of the first connecting rod is rotatably connected to a second connecting rod. One end of the second connecting rod is inclinedly fixed to the wall of the second limiting plate. A fixed shaft is fixed in the receiving groove, and one end of the second limiting plate is rotatably sleeved on the outside of the fixed shaft.

[0016] Furthermore, the top of the substrate is provided with multiple positioning seats, and a locking rod is inserted into the positioning seat. The outer wall of the slider is provided with a locking hole that is threadedly engaged with the locking rod.

[0017] Furthermore, a third lifting lug is provided on the top of the substrate, and the tops of the second lifting lug and the third lifting lug are flush.

[0018] Furthermore, it also includes a hoisting device, which includes multiple shackles, multiple wire ropes, hooks, and a crane. Each shackle is installed in the lifting hole of each lifting lug. One end of each wire rope is connected to the corresponding shackle, and the other end is connected to the hook. The top of the hook is connected to the bottom of the crane's boom.

[0019] The beneficial effects of this invention are reflected in: 1. The vertical shaft double-layer steel shaft wall hoisting system of the present invention replaces the cumbersome method of welding lifting lugs on the inner wall of the double-layer shaft before hoisting and cutting off the lifting lugs after hoisting. It uses the original casting hole on the upper flange as the force point to realize the hoisting connection. That is, the base plate and auxiliary components are used on the casting hole to efficiently complete the installation and disassembly of the structure on the casting hole before and after hoisting, improve the single-section hoisting efficiency of the double-layer shaft, can be reused, save costs, and ensure that the inner wall structure of the double-layer shaft is not damaged. 2. The vertical shaft double-layer steel well wall hoisting system of the present invention selects four symmetrically positioned casting holes on the upper flange, and designs a bayonet structure composed of a mounting base plate, a limiting plate and auxiliary components in each casting hole. By inserting the base plate into the casting hole and rotating the hoisting rod 90°, the first limiting plate is positioned radially in the well shaft. With the use of auxiliary components, the base plate and the upper flange are stably clamped together, so that the well wall can be lifted by connecting shackles, wire ropes and hooks. Attached Figure Description

[0020] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the double-layer well shaft used in the hoisting system of the present invention; Figure 2 This is a partial structural diagram of the base plate, the first limiting plate, and the second limiting plate in the hoisting system of the present invention, in a locked state on the upper flange (the first limiting plate is pressed against the bottom wall of the upper flange, and the second limiting plate is horizontally pressed against the top wall of the upper flange). Figure 3 for Figure 2 A partial structural diagram, with the upper flange removed; Figure 4 for Figure 2 A partial cross-sectional view of the middle substrate, the first limiting plate and the second limiting plate in a locked state on the upper flange, viewed from the main perspective. Figure 5 This is a partial structural diagram of the base plate, the first limiting plate, and the second limiting plate in the hoisting system of the present invention, in an unlocked state on the upper flange (the first limiting plate is pressed against the bottom wall of the upper flange, and the second limiting plate is vertically housed in the side wall of the base plate). Figure 6 for Figure 5 A partial structural diagram, with the upper flange removed; Figure 7 for Figure 5 A partial cross-sectional view of the middle substrate, the first limiting plate and the second limiting plate in an unlocked state on the upper flange, viewed from the main perspective. Figure 8 This is a schematic diagram of the structure of the substrate, the first limiting plate and the second limiting plate of the present invention when they are not installed in the casting hole (the first limiting plate is parallel to the substrate and the second limiting plate is vertically housed in the side wall of the substrate).

[0021] Explanation of reference numerals in the attached figures: 1. Double-layer shaft; 3. Casting hole; 4. Base plate; 5. Lifting rod; 6. First limiting plate; 7. Second lifting lug; 8. Third lifting lug; 9. Second limiting plate; 10. Sliding block; 11. Locking rod; 12. Locking hole; 13. Slide groove; 14. Synchronizing block; 15. First connecting rod; 16. Second connecting rod; 17. Fixed shaft; 18. Receiving groove; 19. Positioning seat; 21. Upper flange. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] Please combine Figures 1 to 8 .

[0024] The vertical shaft double-layer steel shaft wall hoisting system uses the casting hole 3 of the upper flange 21 to hoist the double-layer shaft 1. It includes a base plate 4 that can be adapted to extend into the corresponding casting hole 3. A lifting rod 5 parallel to the double-layer shaft 1 is rotatably inserted on the base plate 4. A first limiting plate 6 parallel to the base plate 4 is fixed at the bottom of the lifting rod 5. A second lifting lug 7 is provided at the top of the lifting rod 5.

[0025] By rotating the lifting rod 5, the first limiting plate 6 is rotated to be misaligned with the base plate 4, so that when the double-layer well shaft 1 is lifted, the top surface of the first limiting plate 6 can contact and support the bottom wall of the upper flange 21.

[0026] It also includes an auxiliary mechanism, which is used to assist in pressing the top wall of the upper flange 21 corresponding to the position of the first limiting plate 6 before lifting.

[0027] In practice, before lifting, four symmetrical pouring holes 3 are selected on the upper flange 21, and a base plate 4 is placed in each pouring hole 3. By rotating the lifting rod 5, the first limiting plate 6 is rotated to a misaligned state with the base plate 4. With the help of the auxiliary mechanism, the upper flange 21 top wall corresponding to the position of the first limiting plate 6 is pressed and held in place, so as to prevent the base plate 4 from falling off the double-layer shaft 1 before lifting. During lifting, the top surface of the first limiting plate 6 can contact and support the bottom wall of the upper flange 21, so as to use the upper flange 21 to carry out the lifting operation of the double-layer shaft 1.

[0028] The advantage of this design is that it replaces the cumbersome method of welding lifting lugs on the inner wall of the double-layer shaft 1 before hoisting and cutting off the lifting lugs after hoisting. It only uses the original casting hole 3 on the upper flange 21. The base plate 4 and auxiliary components are used on the casting hole 3 to carry the hoisting structure. The hoisting structure can be quickly assembled and disassembled on the casting hole 3 before and after hoisting. This eliminates the need for high-altitude precise positioning and welding during the installation process, greatly shortens the preparation time, improves the single-section hoisting construction efficiency of the double-layer shaft, saves costs, and at the same time keeps the inner wall structure of the double-layer shaft intact.

[0029] It should be noted that, in actual hoisting tests, the hoisting system of this embodiment showed that the hoisting structure did not slip or deform under the rated load, and the upper flange 21 remained intact and undamaged after unloading, meeting the requirements for repeated use.

[0030] In this embodiment, a steel plate of predetermined thickness can be pre-installed on the bottom wall of the upper flange 21 at the point where it connects with the first limiting plate 6. This not only increases the bearing area of ​​the first limiting plate 6 on the bottom wall of the upper flange 21 during lifting, but also ensures stability and safety during the lifting process.

[0031] Secondly, the first limiting plate 6 and the second limiting plate 9 can be made of 25mm thick Q355B material, which is reusable and avoids the welding and cutting processes of traditional lifting lugs, significantly reducing operational risks and labor costs. Standardized interface design enables rapid installation and disassembly, effectively improving lifting efficiency.

[0032] Furthermore, the first limiting plate 6 is designed as a flat plate structure, increasing the load-bearing area on the bottom wall of the upper flange 21 and ensuring that the load is evenly transferred to the upper flange 21 structure, avoiding localized damage to the upper flange 21 structure. Simultaneously, the elimination of inner wall welding points eliminates the potential damage to material properties caused by the heat-affected zone, ensuring the integrity of the main structure. This solution provides an innovative technical approach for the efficient and safe hoisting of large vertical shaft steel walls. Moreover, the application of the double-layer steel shaft wall hoisting system in this embodiment significantly reduces the frequency of on-site hot work, lowers fire risk, and improves the safety of the construction environment.

[0033] Furthermore, by precisely matching the dimensions of the pouring hole 3 with the fixture positioning structure, the installation process eliminates the need for high-altitude precision positioning welding, significantly shortening preparation time while ensuring the inner wall structure of the well remains undamaged. Actual hoisting tests show that the positioning structure of the upper flange 21, composed of the first limiting plate 6 and the second limiting plate 7, exhibits no slippage or deformation under rated load. After unloading, the upper flange 21 remains intact and undamaged, meeting the requirements for repeated use.

[0034] In one embodiment, the maximum rotation angle of the lifting rod 5 is ninety degrees, and during lifting, the first limiting plate 6 and the base plate 4 maintain a misaligned and perpendicular state.

[0035] Thus, by rotating the lifting rod 5, the first limiting plate 6 can be rotated to a state perpendicular to the base plate 4, so that the top wall of the base plate 4 can contact and support the bottom wall of the upper flange 21 during lifting.

[0036] It should be noted that when the base plate 4 and the first limiting plate 6 are perpendicular to each other, the length of the first limiting plate 6 in the radial direction of the double-layer well shaft is greater than the maximum length of the pouring hole 3 in the radial direction of the double-layer well shaft, so as to avoid the first limiting plate 6 accidentally detaching from the corresponding bottom wall of the upper flange 21 during hoisting and to ensure stable hoisting.

[0037] When the substrate 4 and the first limiting plate 6 are parallel to each other, the length of the first limiting plate 6 in the radial direction of the double-layer well is less than the maximum length of the pouring hole 3 in the radial direction of the double-layer well, so that the first limiting plate 6 can follow the substrate 4 into or out of the pouring hole 3.

[0038] In one embodiment, the auxiliary mechanism includes a slider 10 sleeved on the outside of the boom 5 and capable of relative axial movement with respect to the boom 5, and the base plate 4 has a second limiting plate 9 on both sides of the double-layer well shaft 1 in the same radial direction, which is parallel to the axial direction of the boom 5.

[0039] It also includes a transmission assembly, which triggers the transmission assembly by driving the slider 10 to move axially upward relative to the lifting rod 5, and synchronously drives the two second limiting plates 9 to flip to the corresponding outer side of the base plate 4, so that the bottom of the second limiting plates 9 is parallel and contacts the corresponding top wall of the flange 21.

[0040] Preferably, the maximum flipping angle of the second limiting plate 9 is ninety degrees.

[0041] Thus, before lifting and after the first limiting plate 6 rotates to be perpendicular to the base plate 4, the drive slider 10 moves axially upward relative to the lifting rod 5, triggering the transmission assembly, so that the two second limiting plates 9 vertically housed on the base plate 4 can simultaneously flip outward to a horizontal state, so that the top walls of the two second limiting plates 9 are respectively pressed against the top wall of the upper flange 21 (at this time, the two second limiting plates 9 are respectively located directly above the positions of the two first limiting plates 6). With the cooperation of the first limiting plate 6, the base plate 4 can be stably held in the corresponding casting hole 3, preparing for subsequent lifting operations.

[0042] In one embodiment, the top of the substrate 4 is provided with a groove 13 that mates with the slider 10, and the slider 10 is provided with a through hole (not shown) that mates with the lifting rod 5.

[0043] Thus, the slider 10 can move axially relative to the lifting rod 5 on the substrate 4 via the sliding groove 13, and the lifting rod 5 can rotate relative to the slider 10 via the through hole.

[0044] In one embodiment, a receiving groove 18 for receiving the second limiting plate 9 is provided on the corresponding side wall of the substrate 4, and the receiving groove 18 is connected to the slide groove 13.

[0045] In one embodiment, the transmission assembly includes two synchronizing blocks 14 fixed relative to each other on the outer wall of the slider 10. One end of each synchronizing block 14 is rotatably connected to a first connecting rod 15, and one end of the first connecting rod 15 is rotatably connected to a second connecting rod 16. One end of the second connecting rod 16 is obliquely fixed to the wall of the second limiting plate 9. A fixed shaft 17 is fixed in the receiving groove 18, and one end of the second limiting plate 9 is rotatably sleeved on the outside of the fixed shaft 17.

[0046] It should be noted that when the second limiting plate 9 is parallel to the top surface of the upper flange 21, the end of the second connecting rod 16 near the first connecting rod 15 tilts towards the lifting rod 5, and the other end of the second connecting rod 16 is fixed to the side of the top surface of the second limiting plate 9 near the lifting rod 5 at this time. The first connecting rod 15 and the synchronizing block 14, as well as the first connecting rod 15 and the second connecting rod 16, can be connected by pins.

[0047] Thus, when the manually driven slider 10 moves upward in the slide groove 13, it can move synchronously through the synchronizing block 14. The synchronizing block 14 drives the second limiting plate 9 to rotate outward around the fixed axis 17 through the first connecting rod 15 and the second connecting rod 16 until it is parallel to the top of the upper flange 21.

[0048] In one embodiment, a plurality of positioning seats 19 are provided on the top of the substrate 4, a locking rod 11 is inserted into the positioning seat 19, and a locking hole 12 is provided on the outer wall of the slider 10 to be threadedly engaged with the locking rod 11.

[0049] Thus, when the drive slider 10 moves upward and the second limiting plate 9 is pressed parallel to the top of the upper flange 21, the locking hole 12 and the locking rod 11 are in corresponding positions. The locking rod 11 is screwed into the locking hole 12 to lock the position of the slider 10 at this time, ensuring that the second limiting plate 9 always maintains a parallel pressing state on the top surface of the upper flange 21, thereby clamping and fixing the upper flange 21 in the positioning space formed between the first limiting plate 6 and the second limiting plate 9, ensuring the smooth progress of subsequent hoisting operations.

[0050] In one embodiment, a third lug 8 is provided on the top of the substrate 4, and the tops of the second lug 7 and the third lug 8 are flush with each other.

[0051] Thus, by adding a third lifting lug 8 to work with the second lifting lug 7, the lifting of the double-layer shaft 1 by the pouring hole 3 in conjunction with the lifting structure can be made more stable.

[0052] It should be noted that before the boom 5 rotates, the lifting hole axes of the second lifting lug 7 and the third lifting lug 8 are perpendicular to each other. After the boom 5 rotates (the upper flange 21 is clamped and fixed by the first limiting plate 6 and the second limiting plate 9), the lifting holes of the second lifting lug 7 and the third lifting lug 8 remain concentrically positioned so that the shackle can pass through both the second lifting lug 7 and the third lifting lug 8 simultaneously, completing the assembly work before lifting. Furthermore, the shackle passing through both the third lifting lug 8 and the second lifting lug 7 further fixes the position of the second lifting lug 7 after rotation, preventing it from rotating due to vibration during lifting. Of course, the shackle can be selectively installed on the second lifting lug 7 and / or the third lifting lug 8 according to the actual lifting needs.

[0053] In one embodiment, the device further includes a hoisting device comprising multiple shackles, multiple wire ropes, a hook, and a crane. Each shackle is installed in a lifting hole of a lifting lug. One end of each wire rope is connected to the corresponding shackle, and the other end is connected to the hook. The top of the hook is connected to the bottom of the crane's boom.

[0054] Thus, after the shackles are installed on each lifting lug, one end of the wire rope is tied to each shackle, and the other end is tied to the hook. Together with the hook on the gantry crane, the shackles generate tension to complete the lifting of the double-layer shaft 1.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0056] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0057] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A vertical shaft double-layer steel shaft wall hoisting system, which utilizes the casting hole (3) of the upper flange (21) to hoist the double-layer shaft (1), characterized in that, It includes a base plate (4) that can be adapted to be inserted into the corresponding pouring hole (3), a lifting rod (5) parallel to the double-layer well shaft (1) is rotatably inserted on the base plate (4), a first limiting plate (6) parallel to the base plate (4) is fixed at the bottom of the lifting rod (5), and a second lifting lug (7) is provided at the top of the lifting rod (5). By rotating the lifting rod (5), the first limiting plate (6) is rotated to be misaligned with the base plate (4), so that when the double-layer well shaft (1) is lifted, the top surface of the first limiting plate (6) can contact and support the bottom wall of the upper flange (21). It also includes an auxiliary mechanism, which is used to assist in pressing the top wall of the upper flange (21) corresponding to the position of the first limiting plate (6) before lifting.

2. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 1, characterized in that, The maximum rotation angle of the lifting rod (5) is ninety degrees. When lifting, the first limiting plate (6) and the base plate (4) are kept in a misaligned and perpendicular state.

3. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 1, characterized in that, The auxiliary mechanism includes a slider (10) sleeved on the outside of the boom (5) and capable of moving relative to the boom (5) axially. The base plate (4) has two second limiting plates (9) parallel to the boom (5) axially on both sides of the same radial direction of the double-layer shaft (1). It also includes a transmission assembly. By driving the slider (10) to move axially upward relative to the boom (5), the transmission assembly is triggered to synchronously drive the two second limiting plates (9) to flip to the corresponding outside of the base plate (4), so that the bottom of the second limiting plates (9) is parallel and contacts the corresponding top wall of the flange (21).

4. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 3, characterized in that, The maximum flipping angle of the second limiting plate (9) is ninety degrees.

5. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 3, characterized in that, The top of the substrate (4) is provided with a groove (13) that cooperates with the slider (10), and the slider (10) is provided with a through hole that cooperates with the lifting rod (5).

6. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 3, characterized in that, The substrate (4) has a receiving groove (18) on the corresponding side wall for receiving the second limiting plate (9).

7. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 6, characterized in that, The transmission assembly includes two synchronous blocks (14) fixed relative to each other on the outer wall of the slider (10). One end of each synchronous block (14) is rotatably connected to a first connecting rod (15), and one end of the first connecting rod (15) is rotatably connected to a second connecting rod (16). One end of the second connecting rod (16) is obliquely fixed on the wall of the second limiting plate (9). A fixed shaft (17) is fixed in the receiving groove (18), and one end of the second limiting plate (9) is rotatably sleeved on the outside of the fixed shaft (17).

8. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 7, characterized in that, The top of the substrate (4) is provided with a plurality of positioning seats (19), and a locking rod (11) is inserted into the positioning seat (19). The outer wall of the slider (10) is provided with a locking hole (12) that is threadedly engaged with the locking rod (11).

9. The vertical shaft double-layer steel shaft wall hoisting system as described in claim 1, characterized in that, The top of the substrate (4) is provided with a third lifting lug (8), and the top of the second lifting lug (7) is flush with the top of the third lifting lug (8).

10. The vertical shaft double-layer steel shaft wall hoisting system as described in any one of claims 1 to 9, characterized in that, It also includes a hoisting device, which includes multiple shackles, multiple wire ropes, hooks and a crane. Each shackle is installed in the lifting hole of each lifting lug. One end of each wire rope is connected to the corresponding shackle, and the other end is connected to the hook. The top of the hook is connected to the bottom of the crane boom.

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