A cup mouth type foundation steel column correction gasket device

Abstract

The application discloses a cup mouth type foundation steel column correction gasket device, and belongs to the technical field of steel structure construction assistance, which comprises a connecting rod piece, one end of the connecting rod piece is provided with a bottom pad plate, one side of the bottom pad plate is in contact with the inner wall of a cup mouth type foundation; a backing plate, one end of the backing plate is in contact with a jack, the backing plate and the connecting rod piece are connected through at least one supplementary connecting plate; a limiting mechanism is arranged on the supplementary connecting plate and the bottom pad plate; the application sets the splicable supplementary connecting plate between the bottom pad plate and the backing plate, uses the limiting mechanism to realize the quick insertion and locking between the plate bodies, can flexibly increase or decrease the number of the supplementary connecting plates according to the actual distance on site, adapts to different gaps between the cup mouth type foundation and the steel column, makes up for the insufficient stroke of the jack, and does not need the cooperation of multiple operators, greatly reduces the labor consumption, and improves the correction construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of auxiliary technology for steel structure construction, and more specifically, to a padding device for correcting cup-shaped foundation steel columns. Background Technology

[0002] In steel structure construction, the cup-shaped foundation is a common type of foundation for steel columns. After the steel column is hoisted into place and placed inside the cup of the cup-shaped foundation, it is necessary to complete the correction of the steel column's axial position and verticality. In the installation and construction process of the steel column of the cup-shaped foundation, the correction of the steel column's axial position, elevation and verticality is a key process, and its accuracy directly affects the stress safety of the superstructure and the installation quality.

[0003] Currently, when aligning the axis of the steel column in a cup-shaped foundation, pry bars or jacks are typically placed in the gap between the outer wall of the steel column and the inner wall of the cup-shaped foundation to apply force and adjust the position of the steel column.

[0004] However, when using a crowbar, multiple workers are often required to work together, which is extremely inconvenient and consumes a lot of manpower, resulting in low construction efficiency. When using a jack, the stroke of the jack often cannot match the actual distance on site. The maximum stroke of the jack is often less than the distance between the steel column and the side wall of the cup, which means that the jack cannot directly contact the outer wall of the steel column, thus preventing the jack from performing its correction function.

[0005] Therefore, it is necessary to provide a liner device for correcting cup-shaped foundation steel columns to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a padding device for correcting cup-shaped foundation steel columns to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A cup-shaped foundation steel column correction pad device includes: A connecting rod has a bottom pad at one end, and one side of the bottom pad is in contact with the inner wall of the cup-shaped foundation. A backing plate, one end of which contacts the jack, and the backing plate and the connecting rod are connected by at least one splice plate; Both the patch plate and the base plate are provided with limiting mechanisms. Adjacent patch plates are connected by the limiting mechanisms. The patch plate and the base plate, as well as the patch plate and the backing plate, are connected by the limiting mechanisms.

[0008] Furthermore, multiple insertion holes are provided on one side of the base plate and the patch plate, and insertion rods adapted to the insertion holes are provided on the other side of the patch plate and one side of the backing plate. Through-hole limiting holes are provided on the insertion rods.

[0009] Furthermore, the limiting mechanism includes: A first elastic element is provided on the outer wall of the patch plate or the bottom pad plate, and a pull plate is provided at the outer end of the first elastic element. A limiting rod, one end of which is connected to the pull plate, and the other end which slides through the outer wall of the supplementary plate or the bottom pad and extends into the insertion hole; The limiting rod is adapted to the limiting hole, and the side of the limiting rod facing the insertion hole opening is set as an inclined surface.

[0010] Furthermore, the outer walls of the patch plate and the base plate are also provided with supports, and the interior of the supports is provided with retractable blocks, the inner end of which is set as an inclined surface.

[0011] Furthermore, the support has a sliding cavity that is slidably connected to the stop block, and a second elastic element is provided between the bottom wall of the sliding cavity and the stop block.

[0012] Furthermore, the end of the pull plate is provided with a fixing screw hole, and the support is threaded with a fixing bolt that matches the fixing screw hole.

[0013] Furthermore, the connecting rod includes: The sleeve rod is connected to the base plate. An inner connecting rod is slidably inserted inside the sleeve rod. The inner connecting rod has multiple adjusting holes with internal threads. The outer wall of the sleeve rod is threaded with a set bolt that matches the thread of the adjusting hole.

[0014] Furthermore, the connecting rod is also provided with a detachable adapter, and a baffle is connected to the adapter.

[0015] Furthermore, the adapter includes: An arc-shaped sleeve, the outer wall of which is connected to the baffle, and the outer wall of the arc-shaped sleeve is also threaded with a positioning bolt that is adapted to the thread of the adjusting hole; The outer wall of the sleeve is also provided with multiple positioning holes that are compatible with the positioning bolts.

[0016] Furthermore, the arc-shaped sleeve has an clearance opening, the width of which is greater than the outer diameter of the set bolt.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a splicable patch plate between the base plate and the backing plate, and a limiting mechanism to achieve quick insertion and locking between the plates. The number of patch plates can be flexibly increased or decreased according to the actual spacing on site, adapting to different gaps between the cup-shaped foundation and the steel column. This compensates for the problem of insufficient jack stroke, making the effective stroke of the jack match the cup gap, thus solving the problem that traditional jacks cannot directly push the steel column due to insufficient stroke. Moreover, it eliminates the need for multiple operators to work together, greatly reducing manpower consumption and improving the efficiency of correction construction.

[0018] In addition, there is no need to use a crowbar, which saves manpower and reduces the risk. It also prevents the crowbar fulcrum from causing local damage to the inner wall of the cup or the surface of the steel column, which could affect the structural quality.

[0019] 2. This invention uses a plug rod and a plug hole for alignment and insertion. Together with the limit rod with a bevel and the first elastic element in the limit mechanism, an automatic locking structure is formed. The plates can be inserted and automatically locked together without the need for additional tools. When disassembling, pulling can unlock the plate. At the same time, the matching block can temporarily keep the plate unlocked, freeing the operator's hands and making it easy for one person to disassemble and assemble.

[0020] 3. The present invention has an anti-loosening safety structure. Through the double safety mechanism of support, stop and fixing bolt, it avoids the limit rod from retracting and loosening due to construction vibration, on-site contact and other accidental factors, prevents splicing plate from accidentally disintegrating, and reduces the construction risk in high-altitude and confined spaces.

[0021] 4. The connecting rod of the present invention adopts a telescopic adjustment structure of sleeve rod and inner connecting rod, which can flexibly adjust the total length of the connecting rod to adapt to cup-shaped foundations of different depths; it is equipped with a detachable adapter and baffle to provide vertical support and positioning for the device and prevent the device from sinking or shifting during the jacking process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the padding device of the present invention in use. Figure 2 This is a three-dimensional schematic diagram of the overall structure of the padding device of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 This is an exploded structural diagram of the bottom pad, backing plate, and splice plate of the device of the present invention. Figure 6 This is a three-dimensional structural diagram of one side of the insertion rod of the splice plate of the present invention; Figure 7 for Figure 6 Enlarged view of point C in the middle; Figure 8 This is a top cross-sectional view of the insertion hole of the patch plate of the present invention; Figure 9 This is a cross-sectional structural schematic diagram of the support of the present invention; Figure 10 This is a schematic diagram of the limiting mechanism of the patch plate of the present invention in the released state; Figure 11 for Figure 10 Enlarged diagram of point D in the middle.

[0023] Explanation of the labels in the diagram: 1. Cup-shaped foundation; 2. Jack; 3. Connecting rod; 31. Sleeve rod; 32. Inner connecting rod; 33. Adjusting hole; 34. Set bolt; 4. Base plate; 5. Backing plate; 6. Supplementary plate; 7. Limiting mechanism; 71. First elastic element; 72. Pull plate; 73. Limiting rod; 8. Insertion hole; 9. Insertion rod; 10. Limiting hole; 11. Support; 12. Stop block; 13. Sliding cavity; 14. Second elastic element; 15. Fixing screw hole; 16. Fixing bolt; 17. Adapter; 171. Arc-shaped sleeve; 172. Positioning bolt; 18. Baffle; 19. Positioning hole; 20. Clearance opening. (Detailed implementation method) The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0024] Please see Figure 1-11 A cup-shaped foundation steel column correction pad device, comprising: The connecting rod 3 has a bottom pad 4 at one end. One side of the bottom pad 4 is in contact with the inner wall of the cup-shaped foundation 1. The surface of the bottom pad 4 is flat, which can prevent the poor flatness of the inner wall of the cup-shaped foundation 1 from affecting the normal operation of the jack 2. The backing plate 5, one end of which is in contact with the jack 2, is arranged on the side facing the steel column to provide a flat backing support surface for the jack 2. The backing plate 5 and the connecting rod 3 are connected by at least one supplementary plate 6, the number of which can be adjusted according to actual needs to adjust the total distance between the bottom pad plate 4 and the backing plate 5, and to adapt to different widths of gaps between the inner wall of the cup-shaped foundation 1 and the outer wall of the steel column. Both the patch plate 6 and the base plate 4 are equipped with limiting mechanisms 7. Adjacent patch plates 6 are connected by limiting mechanisms 7. The patch plate 6 and the base plate 4, as well as the patch plate 6 and the backing plate 5, are also connected by limiting mechanisms 7, so as to realize quick insertion and locking between each plate.

[0025] In use, first determine the required number of expansion plates 6 based on the gap width between the inner wall of the cup-shaped foundation 1 and the outer wall of the steel column, as well as the stroke specifications of the jack 2. Then, use the limiting mechanism 7 to sequentially splice the expansion plates 6 between the base plate 4 and the backing plate 5. Next, the operator holds the connecting rod 3 and inserts the assembled padding device into the cup-shaped foundation 1, ensuring the base plate 4 fits against the inner wall of the cup-shaped foundation 1. Then, place the jack 2 between the outer wall of the steel column and the backing plate 5, and operate the jack 2 to output thrust to correct and adjust the axial position and verticality of the steel column. After correction, retract the jack 2, remove the device, and release the locking mechanism 7 to disassemble the plates for easy reuse.

[0026] By setting a splicable supplementary plate 6 between the base plate 4 and the backing plate 5, and using the limiting mechanism 7 to achieve quick insertion and locking between the plates, the number of supplementary plates 6 can be flexibly increased or decreased according to the actual spacing on site. This adapts to different gaps between the cup-shaped foundation 1 and the steel column, compensating for the insufficient stroke of the jack 2, and matching the effective stroke of the jack 2 with the cup-shaped gap. This solves the problem that traditional jacks cannot directly push the steel column due to insufficient stroke. It eliminates the need for multiple operators, significantly reducing manpower consumption and improving the efficiency of the correction construction. Furthermore, it eliminates the need for pry bars, saving manpower and reducing risks, while also preventing the pry bar fulcrum from causing localized damage to the inner wall of the cup-shaped foundation or the surface of the steel column, thus affecting the structural quality.

[0027] Preferably, the bottom pad 4 and the patch plate 6 are provided with multiple insertion holes 8 on one side, and the other side of the patch plate 6 and the side of the backing plate 5 are provided with insertion rods 9 that are adapted to the insertion holes 8. The insertion rods 9 are provided with through limiting holes 10.

[0028] This design involves first aligning the two plates to be joined, then aligning the insertion rod 9 with the insertion hole 8. A pushing force is then applied to the plates to insert the insertion rod 9 into the insertion hole 8. Once the insertion rod 9 is fully in place, the limiting hole 10 on the insertion rod 9 aligns with the limiting mechanism 7 on the side of the insertion hole 8. Finally, the cooperation between the limiting mechanism 7 and the limiting hole 10 locks the insertion position, effectively withstanding the shear force and eccentric load during the jacking action of the jack 2, preventing relative deflection or slippage between the plates, and ensuring the overall strength and stability of the padding structure. For disassembly, first release the constraint of the limiting mechanism 7 on the limiting hole 10, then pull the insertion rod 9 out of the insertion hole 8 to separate the plates. The overall structure is simple, the insertion alignment is intuitive, and it facilitates rapid on-site assembly.

[0029] Preferably, the limiting mechanism 7 includes: The first elastic element 71 is provided on the outer wall of the patch plate 6 or the bottom pad plate 4. The first elastic element 71 can be a compression spring, and a pull plate 72 is provided at the outer end of the first elastic element 71. The limiting rod 73 has one end connected to the pull plate 72, and the other end slides through the outer wall of the supplementary plate 6 or the bottom pad plate 4 and extends into the insertion hole 8. The limiting rod 73 is adapted to the limiting hole 10, and the side of the limiting rod 73 facing the opening of the insertion hole 8 is set as an inclined surface.

[0030] Specifically, when the insert rod 9 is inserted into the socket 8, the end of the insert rod 9 first contacts the inclined surface of the limiting rod 73, generating an outward pushing force on the limiting rod 73, causing the limiting rod 73 to retract outward against the elastic force of the first elastic element 71. When the insert rod 9 is fully inserted, the limiting hole 10 aligns with the limiting rod 73, and the limiting rod 73 is no longer under pressure. The first elastic element 71 releases its elastic force, pushing the limiting rod 73 into the limiting hole 10, completing the automatic locking. The locking and fixing between the two plates can be completed without manual operation of the locking components. When disassembly is required, pull the pull plate 72 outward, causing the limiting rod 73 to disengage from the limiting hole 10, allowing the insert rod 9 to be pulled out of the socket 8.

[0031] Preferably, the outer walls of the patch plate 6 and the bottom pad plate 4 are also provided with a support 11. The support 11 is provided with a retractable block 12 inside. The end of the block 12 facing inward is set as an inclined surface. The block 12 is used to temporarily limit the pull plate 72 in the unlocked state.

[0032] Specifically, pull the pull plate 72 outward to make the limiting rod 73 exit the limiting hole 10. The edge of the pull plate 72 that moves inward contacts the inclined surface of the stop block 12. Continue to pull the pull plate 72 to squeeze the stop block 12 and make it retract into the support 11. Then, after the pull plate 72 passes the stop block 12, the stop block 12 pops outward and blocks the inside of the pull plate 72, keeping the pull plate 72 in the unlocked position and maintaining the unlocked state. At this time, you can release your hand and perform the insertion and removal of the insertion rod 9. When disassembling and assembling the plate, the operator does not need to hold the pull plate 72 with one hand, realizing one-handed operation. When the assembly is complete and the locking mechanism needs to be restored, press the stop block 12 inward to retract it, releasing the obstruction of the pull plate 72. The pull plate 72 then resets under the drive of the first elastic element 71, and the limit rod 73 re-enters the insertion hole 8. This improves the ease of assembly and disassembly in confined spaces and reduces the need for multiple people to work together.

[0033] Preferably, the support 11 has a sliding cavity 13 that is slidably connected to the stop block 12. A second elastic element 14 is provided between the bottom wall of the sliding cavity 13 and the stop block 12. The second elastic element 14 can also be a compression spring.

[0034] Specifically, in use, after the pull plate 72 presses against the inclined surface of the stop block 12, the stop block 12 slides inward along the slide cavity 13, compressing the second elastic element 14. When the pull plate 72 completely passes the stop block 12, the second elastic element 14 releases its elastic force, pushing the stop block 12 outward along the slide cavity 13, thus limiting the pull plate 72. When it is necessary to release the limit, press the outer end of the stop block 12, and the stop block 12 retracts along the slide cavity 13, compressing the second elastic element 14 and releasing the block 72. After releasing the press, the second elastic element 14 pushes the stop block 12 back to its original position, waiting for the next locking action.

[0035] Preferably, the end of the pull plate 72 is provided with a fixing screw hole 15, and the support 11 is threaded with a fixing bolt 16 that is compatible with the fixing screw hole 15.

[0036] With this design, after the bottom pad 4, the supplementary plate 6, and the backing plate 5 are assembled, the limiting rod 73 is locked into the limiting hole 10. Align the fixing bolt 16 on the support 11 with the fixing screw hole 15 at the end of the pull plate 72, and then tighten the fixing bolt 16 so that the fixing bolt 16 is screwed into the fixing screw hole 15, thereby rigidly locking the pull plate 72 and the support 11, preventing construction vibration and accidental contact with the pull plate 72, and preventing the limiting rod 73 from accidentally coming out of the limiting hole 10, forming a secondary anti-loosening protection; and it does not interfere with the elastic locking function of the limiting mechanism 7 itself, which is an additional safety mechanism that can be locked or unlocked as needed.

[0037] Before removing the gasket, rotate the fixing bolt 16 in the opposite direction to disengage the fixing bolt 16 from the fixing screw hole 15 and release the lock. Then, pull the plate 72 to unlock and disassemble the plate.

[0038] Preferably, the connecting rod 3 includes: The sleeve rod 31 is connected to the base plate 4. An inner connecting rod 32 is slidably inserted inside the sleeve rod 31. Multiple adjusting holes 33 with internal threads are opened on the inner connecting rod 32. The outer wall of the sleeve rod 31 is threaded with a set bolt 34 that matches the thread of the adjusting hole 33.

[0039] Specifically, first loosen the set bolt 34 on the outer wall of the sleeve rod 31, then, according to the cup depth of the cup-shaped foundation 1, pull the inner connecting rod 32 to slide inside the sleeve rod 31, adjust the overall length of the connecting rod 3, align it with the appropriate adjustment hole 33, then tighten the set bolt 34 so that the end of the set bolt 34 is screwed into the corresponding adjustment hole 33 of the inner connecting rod 32, locking the relative position of the sleeve rod 31 and the inner connecting rod 32, and finally, hold the upper end of the connecting rod 3 and lower the entire set of gaskets to the cup gap.

[0040] The sleeve rod 31 and the inner connecting rod 32 form a telescopic structure, which can adjust the total height of the connecting rod 3, adapt to cup-shaped foundations 1 of different depths, and realize multi-level length adjustment, making it convenient for operators to operate from above the cup opening, adapting to different cup opening depths, and improving the versatility of the device.

[0041] In this embodiment, the connecting rod 3 is also provided with a detachable adapter 17, and a baffle 18 is connected to the adapter 17.

[0042] Specifically, first, the adapter 17 is placed on the connecting rod 3. Then, the adapter 17 is slid up and down along the connecting rod 3 to adjust the height of the baffle 18 so that the baffle 18 can horizontally abut against the upper surface of the cup-shaped foundation 1. Next, the adapter 17 is locked onto the connecting rod 3. After the device is lowered into the cup, the baffle 18 rests on the top surface of the cup-shaped foundation 1 to axially limit the entire device, bear the weight of the liner and the axial force from the jack 2, and prevent the entire liner device from sliding and falling into the depth of the cup. In addition, the baffle 18 can limit the lowering depth of the liner to ensure that the bottom pad 4 is placed at a suitable height inside the cup.

[0043] After the work is completed, release the locking of adapter 17, and adapter 17 can be directly removed for detachable use.

[0044] Preferably, the adapter 17 includes: The outer wall of the arc-shaped sleeve 171 is connected to the baffle 18, and the outer wall of the arc-shaped sleeve 171 is also threaded with a positioning bolt 172 that is compatible with the thread of the adjustment hole 33. The outer wall of the sleeve rod 31 is also provided with multiple positioning holes 19 that are compatible with the positioning bolts 172.

[0045] With this design, the arc-shaped sleeve 171 is first fitted into the connecting rod 3, the arc-shaped sleeve 171 is slid, the baffle 18 is adjusted to the target height, and then the positioning bolt 172 is rotated so that the positioning bolt 172 is screwed into the corresponding adjustment hole 33 or the positioning hole 19 of the sleeve 31, which can lock the arc-shaped sleeve 171. When the jack 2 is working, the adapter 17 will not move. When disassembling adapter 17, fully unscrew positioning bolt 172 and directly pull arc-shaped sleeve 171 out from the upper end of the rod.

[0046] Preferably, the arc-shaped sleeve 171 has a relief opening 20, the width of which is greater than the outer diameter of the set bolt 34.

[0047] With this design, when the adapter 17 slides along the connecting rod 3, the clearance 20 can avoid the set bolt 34, thus preventing the set bolt 34 from interfering with the arc-shaped sleeve 171 and ensuring that the adapter 17 can move up and down along the connecting rod 3 to adjust its position smoothly.

[0048] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

[0049] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0050] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," 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, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. 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 those 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 this invention.

Claims

1. A padding device for correcting a cup-shaped foundation steel column, characterized in that, include: The connecting rod (3) has a bottom pad (4) at one end, and one side of the bottom pad (4) is in contact with the inner wall of the cup-shaped foundation (1); The backing plate (5) has one end in contact with the jack (2), and the backing plate (5) and the connecting rod (3) are connected by at least one splice plate (6); Both the patch plate (6) and the base plate (4) are provided with limiting mechanisms (7). Adjacent patch plates (6) are connected by the limiting mechanisms (7). The patch plate (6) and the base plate (4) are connected by the limiting mechanisms (7). The patch plate (6) and the backing plate (5) are also connected by the limiting mechanisms (7).

2. The cup-shaped foundation steel column correction pad device according to claim 1, characterized in that, The bottom pad (4) and the patch plate (6) are provided with multiple insertion holes (8) on one side. The other side of the patch plate (6) and the side of the backing plate (5) are provided with insertion rods (9) that are compatible with the insertion holes (8). The insertion rods (9) are provided with through limiting holes (10).

3. The cup-shaped foundation steel column correction pad device according to claim 2, characterized in that, The limiting mechanism (7) includes: The first elastic element (71) is provided on the outer wall of the supplementary plate (6) or the bottom pad plate (4), and the outer end of the first elastic element (71) is provided with a pull plate (72). The limiting rod (73) has one end connected to the pull plate (72) and the other end sliding through the outer wall of the supplementary plate (6) or the bottom pad plate (4) and extending into the insertion hole (8); The limiting rod (73) is adapted to the limiting hole (10), and the side of the limiting rod (73) facing the opening of the insertion hole (8) is set as an inclined surface.

4. The cup-shaped foundation steel column correction pad device according to claim 3, characterized in that, The outer walls of the patch plate (6) and the bottom pad plate (4) are also provided with a support (11), and the inside of the support (11) is provided with a retractable stop (12), and the inner end of the stop (12) is set as an inclined surface.

5. A liner device for correcting a cup-shaped foundation steel column according to claim 4, characterized in that, The support (11) has a sliding cavity (13) that is slidably connected to the stop (12), and a second elastic element (14) is provided between the bottom wall of the sliding cavity (13) and the stop (12).

6. A liner device for correcting a cup-shaped foundation steel column according to claim 4, characterized in that, The end of the pull plate (72) is provided with a fixing screw hole (15), and the support (11) is threaded with a fixing bolt (16) that is compatible with the fixing screw hole (15).

7. A liner device for correcting a cup-shaped foundation steel column according to claim 1, characterized in that, The connecting rod (3) includes: The sleeve (31) is connected to the bottom pad (4). An inner connecting rod (32) is slidably inserted inside the sleeve (31). Multiple adjusting holes (33) with internal threads are opened on the inner connecting rod (32). A set bolt (34) that is adapted to the thread of the adjusting hole (33) is threaded on the outer wall of the sleeve (31).

8. A liner device for correcting a cup-shaped foundation steel column according to claim 7, characterized in that, The connecting rod (3) is also provided with a detachable adapter (17), and a baffle (18) is connected to the adapter (17).

9. A liner device for correcting a cup-shaped foundation steel column according to claim 8, characterized in that, The adapter (17) includes: An arc-shaped sleeve (171) has its outer wall connected to the baffle (18), and the outer wall of the arc-shaped sleeve (171) is also threaded with a positioning bolt (172) that is compatible with the thread of the adjusting hole (33). The outer wall of the sleeve (31) is also provided with a plurality of positioning holes (19) that are compatible with the positioning bolt (172).

10. A liner device for correcting a cup-shaped foundation steel column according to claim 9, characterized in that, The arc-shaped sleeve (171) has a relief opening (20), the width of which is greater than the outer diameter of the set bolt (34).

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