Elevator steel tower foundation construction device and method thereof

Abstract

This invention provides a construction device and method for elevator steel structure hoist foundation, relating to the field of elevator steel structure hoist technology. It includes a foundation pit, a concrete curb, and steel columns. The top of the concrete curb is provided with multiple vertical reinforcing bars, and the bottom of the steel columns is fixedly fitted with shims. The inner wall of the concrete curb has two side steel plates (first type), and the outer wall of the concrete curb has two side steel plates (second type). Multiple steel ropes are installed inside the side steel plates (first type). Each positioning component includes a collar, multiple spring plates, and a positioning bushing. Multiple sets of radially distributed spring plates are welded to the mounting hole walls of the side steel plates (second type). When there is a slight misalignment between the steel rope and the mounting hole, the collar expands outward under stress, and the spring plates bend and deform. The elastic deformation of the spring plates absorbs the vibration during steel rope tensioning, allowing the collar to finely adjust its position within the mounting hole, automatically adapting to the steel rope axis, and preventing the steel rope from being jammed or generating shear stress.

Description

Technical Field

[0001] This invention belongs to the field of elevator steel structure hoist technology, and more specifically, it relates to an elevator steel structure hoist foundation construction device and method. Background Technology

[0002] Elevator steel structure shaft, also known as steel structure elevator shaft, is a closed steel vertical frame assembled / welded on site using steel profiles, columns, beams, and steel plates. It replaces the traditional reinforced concrete elevator shaft, providing a dedicated vertical channel and load-bearing support frame for the elevator car to move up and down.

[0003] 1. The construction of the elevator steel structure hoist foundation involves pre-embedding steel plates on the upper part of the concrete curb, then pouring concrete to form the foundation, and directly hoisting the elevator steel structure hoist for base welding. However, the concrete construction requires vibration, which can easily cause slippage errors in the completed steel reinforcement skeleton. When hoisting the elevator steel structure for base welding, the pre-embedded steel plates cannot be welded to the base, resulting in a longer construction time and increased cost of pre-embedded steel plates.

[0004] 2. Cumulative errors in concrete pouring and steel plate installation cause misalignment of the steel rope through the holes. Forcing the rope through will generate shear stress, making the steel rope prone to breakage during tensioning and scratching the hole wall. Since the steel rope and the hole are in rigid contact, the impact and vibration during tensioning act directly on the steel rope and the hole wall. Over time, this can easily lead to steel rope wear, cracking of the hole, and reduced structural life. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a construction device and method for elevator steel structure hoist foundations, thereby resolving the problems described above.

[0006] An elevator steel structure hoist foundation construction device includes a foundation pit, a concrete curb, and steel columns. The top of the concrete curb is provided with multiple vertical reinforcing bars. A gasket is fixedly installed on the bottom surface of the steel columns. Two side steel plates are provided on the inner wall of the concrete curb, and two side steel plates are provided on the outer wall of the concrete curb. Multiple steel ropes are installed inside the side steel plates, and a tail cone sleeve is fixedly installed at the end of each steel rope. The device also includes:

[0007] Multiple positioning components are provided, each of which is disposed inside the second side steel plate. Each positioning component includes a collar, multiple spring plates and positioning bushings. Multiple first support frames are provided at the top of each second side steel plate, and second support frames are slidably installed inside each first support frame.

[0008] Preferably, a clamping plate is slidably installed on the bottom surface of each of the second support frames, an inclined sliding wedge block is fixedly installed on the top of each clamping plate, an arc-shaped clamp is fixedly installed on the inner side of each clamping plate, and multiple teeth are provided on the inner sidewall of each arc-shaped clamp.

[0009] Each of the aforementioned collars is specifically an open-type elastic ring. Multiple sets of spring plates are welded and fixed to the collar, with the inner side fitting with the steel rope with a gap. The entire collar is embedded in the mounting hole of the second side steel plate. One end of each spring plate is welded to the outer wall of the collar, and the other end is welded to the wall of the mounting hole of the second side steel plate.

[0010] Preferably, each of the two side ends of the second support frame is provided with a slider, and two reset rods are fixedly installed on the inner side wall of each second support frame. The reset rods are connected to the second support frame by welding.

[0011] Two telescopic rods are fixedly installed on the inner side wall of each of the support frames, and the top of each telescopic rod is welded and fixed to the inclined sliding wedge block;

[0012] Each of the support frame boxes has a threaded screw rotatably mounted on its inner sidewall, and each of the support frame boxes has a knob rod at its top. The threaded screw is connected to the support frame box through a bearing ring.

[0013] Preferably, a thrust plate is slidably installed inside each of the support frame boxes, and each thrust plate is provided with a threaded sleeve inside, and each thrust plate adopts a hollow structure;

[0014] Each of the thrust plates is fixedly mounted with guide rail plates on both sides, and each guide rail plate is rotatably mounted with rollers on its inner side. The guide rail plates fit and connect with the grooves inside the support frame box.

[0015] Each of the second support frame boxes slides in conjunction with the guide groove of the first support frame box, and the internal cavity slides in conjunction with the inclined wedge block. Each of the second support frame boxes is formed by bending and welding steel plates, and the inclined surface of the inclined wedge block makes rolling contact with the roller.

[0016] A construction method for elevator steel structure shaft foundation includes the following steps:

[0017] Step 1: Excavate the foundation pit, reserve vertical reinforcement bars during construction, pour concrete to form a concrete inverted curb with vertical reinforcement bars, which serves as the horizontal load-bearing base for the steel structure columns. Steel rope through holes are reserved on the side wall of the inverted curb, and anchoring holes for vertical reinforcement bars are reserved on the top surface. Fiber rubber gaskets are added to the bottom surface of the steel structure columns. The columns are hoisted to the top of the concrete inverted curb, and the vertical reinforcement bars are inserted into the inside of the columns to form vertical limits. The side steel plates are fixed to the inner side wall of the columns with bolts, fitting snugly against the inner wall of the inverted curb.

[0018] Step 2: One end of the steel rope passes through the reserved hole of the side steel plate 1, through the reserved channel of the concrete curb, and is inserted into the installation hole of the outer side steel plate 2. The end is fixed to the tail cone sleeve by pressing. The support frame box 1 is installed on the side steel plate 2. The support frame box 2 is in the initial position. The reset spring of the reset rod pulls the inclined sliding wedge block outward. The arc clamp is in the open state, and the steel rope can freely pass through the clamp gap.

[0019] Step 3: Drive the threaded screw to rotate through the bevel gear transmission, causing the thrust plate to slide to one side of the support frame box. The guide plate drives the roller to squeeze the inclined sliding wedge block, so that the teeth of the arc-shaped clamp bite the surface of the steel rope. The thrust plate continues to slide, pushing the support frame box to move outward, pulling the steel rope to tension. The tail cone sleeve is locked on the inner side of the side steel plate, so that the steel structure column is tightly attached to the inner wall of the concrete inverted wall. After reaching the design tension, stop rotating and use the self-locking property of the threaded screw to lock the tension state.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In this invention, a steel rope is used to pass through side steel plate one, concrete curb, and side steel plate two. The high-strength steel rope transmits horizontal tension through tension, pulling the steel column and the inner wall of the concrete curb tightly together, eliminating the construction gap deviation between the column and the curb, correcting the column misalignment problem, and forming an integrated force-bearing system of steel column, concrete curb, side steel plate one, and side steel plate two through the steel rope. This avoids the errors caused by concrete construction during the construction of the embedded steel plate, improves the foundation bearing capacity and safety stability, and avoids structural failure caused by uneven stress.

[0022] In this invention, the collar is an open-type elastic ring, and multiple sets of radially distributed spring plates are welded to the mounting hole wall of the side steel plate. When there is a slight misalignment between the steel rope and the mounting hole, the collar expands outward under force, and the spring plates bend and deform. The elastic deformation of the spring plates can absorb the vibration during the tensioning of the steel rope, prevent rigid impact from causing wear of the steel rope or cracking of the mounting hole, allow the collar to finely adjust its position within the mounting hole, automatically adapt to the steel rope axis, and avoid the steel rope from being jammed or generating shear stress.

[0023] In this invention, the guide rail plate slides along the groove of the support frame box, which drives the inner roller to move towards the inclined side of the inclined wedge block. The roller contacts the inclined side of the inclined wedge block, pushing the two inclined wedge blocks to slide symmetrically towards the steel rope. The inclined wedge blocks drive the clamping plate and the arc-shaped clamp to move towards the steel rope. The teeth on the inner side of the arc-shaped clamp bite the surface of the steel rope to achieve initial clamping and prevent slippage.

[0024] In this invention, after the foundation pit is excavated, a concrete retaining wall is poured. During construction, holes for steel rope penetration and anchoring holes for vertical reinforcing bars are reserved. The vertical reinforcing bars are embedded in the top surface of the concrete retaining wall to form a concrete base with vertical restraint. Before hoisting the steel column, shims are added to its bottom surface. The steel column is hoisted to the top of the concrete retaining wall, and the vertical reinforcing bars are inserted into the steel column to form vertical restraint and prevent the column from tilting. The shims absorb the impact of hoisting and the column's levelness is finely adjusted by adjusting the thickness. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the elevator steel structure hoist frame of the present invention;

[0026] Figure 2 This is a schematic diagram of the concrete inverted retaining wall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the side steel plate structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the positioning bushing structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the support frame structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the thrust plate structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the clamping plate structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the construction of the elevator steel structure corner of the present invention.

[0033] In the diagram, 11. Excavation pit; 12. Concrete retaining wall; 13. Steel column; 14. Shim; 15. Vertical reinforcement; 16. Side steel plate one; 17. Side steel plate two; 18. Steel rope; 19. Tail cone sleeve; 21. Collar; 22. Spring plate; 23. Positioning bushing; 24. Support frame box one; 25. Telescopic rod; 26. Threaded rod; 27. Thrust plate; 28. Guide rail plate; 29. ​​Roller; 31. Support frame box two; 32. Reset rod; 33. Clamping plate; 34. Inclined sliding wedge block; 35. Arc-shaped clamp; 36. Tooth. Detailed Implementation

[0034] Example 1

[0035] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0036] Please see Figure 1 - Figure 8This invention provides a construction device for an elevator steel structure hoist foundation, including a pit 11, a concrete curb 12, and a steel column 13. The top of the concrete curb 12 is provided with multiple vertical reinforcing bars 15. A shim 14 is fixedly installed on the bottom surface of the steel column 13. Two side steel plates 16 are provided on the inner wall of the concrete curb 12, and two side steel plates 17 are provided on the outer wall of the concrete curb 12. Multiple steel ropes 18 are installed inside the side steel plates 16, and a tail cone sleeve 19 is fixedly installed at the end of each steel rope 18. The steel column 13 is then erected on the concrete curb 11. At the top of the concrete curb 12, multiple vertical steel bars 15 are provided. The vertical steel bars 15 can be inserted into the steel column 13. A shim 14 is installed on the bottom surface of the steel column 13. The shim 14 between the concrete curb 12 and the steel column 13 can reduce shock and buffer. The side steel plate 16 is fixed to the inside of the steel column 13 by bolts to increase stability. By taking the steel rope 18, one end of the steel rope 18 is passed through the inside of the side steel plate 16, and the steel rope 18 continues to pass through the inside of the concrete curb 12. The steel rope 18 is inserted into the inside of the side steel plate 17.

[0037] Multiple positioning components are provided, each located inside the second side steel plate 17. Each positioning component includes a collar 21, multiple spring plates 22, and a positioning bushing 23. Multiple first support boxes 24 are located at the top of each second side steel plate 17. A second support box 31 is slidably installed inside each first support box 24. Due to the pressure of the roller 29 on one side of the inclined sliding wedge block 34, the roller 29 not only pulls the inclined sliding wedge block 34 to slide symmetrically inside the second support box 31, but also the thrust plate 27 drives the roller 29 to continue sliding. The roller 29 also applies a force to the second support box 31, causing it to slide along the internal guide of the first support box 24. At this point, the two telescopic rods 25 have locked the surface of the steel rope 18. By sliding the thrust plate 27, not only is the steel rope 18 securely clamped, but the two clamping plates 33 also slide a short distance to one side, applying tension to the steel rope 18. At this time, the steel rope 18 drives the tail cone sleeve 19 to be inserted into the side steel plate 16. By using side steel plate 16 and side steel plate 27 on the completed concrete curb 12, and welding and fixing side steel plate 16 to the steel column 13, the steel rope 18 can pull the side steel plate 16 and side steel plate 27, so that the steel column 13 and side steel plate 16 are close to the inner wall of the concrete curb 12. While pouring concrete, it prevents errors caused during construction, and also increases the overall strength of the foundation, making it safer and more stable, and the base has a greater load-bearing capacity. The steel rope 18 passes through the inside of the collar 21.

[0038] Each support frame box 31 has a clamping plate 33 slidably mounted on its bottom surface. Each clamping plate 33 has a sloping wedge block 34 fixedly mounted on its top. Each clamping plate 33 has an arc-shaped clamp 35 fixedly mounted on its inner side. Each arc-shaped clamp 35 has multiple teeth 36 on its inner sidewall. The sloping wedge block 34 allows the clamping plate 33 to slide along the interior of the support frame box 31. The clamping plates 33 slide symmetrically, allowing the arc-shaped clamp 35 to cooperate with the teeth 36 to continue compressing the surface of the steel rope 18. Each clamping plate 33 symmetrically presses and locks the surface of each steel rope 18. The teeth 36 adopt a trapezoidal structure. The inner arc surface of the arc clamp 35 matches the diameter of the steel rope 18. The inner arc surface diameter is 0.2-0.5mm larger than the diameter of the steel rope 18, ensuring that the steel rope 18 can pass freely in the initial state. When clamped, the two arc clamps 35 close symmetrically, and the teeth 36 embed into the surface of the steel rope 18 (embedding depth 0.3-0.5mm) to form a bite lock and prevent slippage during tensioning.

[0039] Each collar 21 is specifically an open-type elastic ring. Multiple spring plates 22 are welded and fixed to the collar 21, with a clearance fit between the inner side and the steel rope 18. The entire collar 21 is embedded into the mounting holes of the second side steel plate 17. One end of each spring plate 22 is welded to the outer wall of the collar 21, and the other end is welded to the mounting hole wall of the second side steel plate 17. They are radially distributed on the outer side of the collar 21. The positioning bushing 23 is made of nitrile rubber and is nested within the mounting holes of the second side steel plate 17, with an interference fit against the hole wall. The inner side is fitted to the collar 21. With clearance fit, the collar 21 can expand outward under force to wrap the surface of the steel rope 18. The collar 21 is connected to the mounting holes of the side steel plate 17 through multiple sets of spring plates 22. The spring plates 22 can deform and bend, allowing the collar 21 to slide inside the mounting holes. While the collar 21 slides, it drives the positioning bushing 23 to deform and bend. The positioning bushing 23 plays a sealing role, solving the problem of loose connection caused by the misalignment of the original through hole and anchor bolt. At the same time, the edge of the mounting hole is rounded to avoid stress concentration.

[0040] Each support frame box 2 31 has a slider at both ends of its sides. Two reset rods 32 are fixedly installed on the inner side wall of each support frame box 2 31. The reset rods 32 are connected to the support frame box 2 31 by welding. The side ends of the support frame box 2 31 are connected to the support frame box 1 24. The reset rods 32 are welded and fixed to the inclined sliding wedge block 34 respectively. The reset rods 32 are equipped with reset springs inside. Through the free extension and retraction of the reset rods 32, the reset rods 32 generate tension on the inclined sliding wedge block 34, causing the two clamping plates 33 to slide in opposite directions first. The clamping plates 33 drive the arc-shaped clamp 35 to fit against the outer surface of the steel rope 18. The reset rods 32 adopt a guide rod sleeve telescopic structure. The reset spring adopts a cylindrical helical compression spring, which is nested on the guide rod. One end abuts against the inner side wall of the support frame box 2 31, and the other end abuts against the side wall of the inclined sliding wedge block 34, and is in a pre-compressed state.

[0041] Two telescopic rods 25 are fixedly installed on the inner side wall of each support frame box 24. The top of each telescopic rod 25 is welded and fixed to the inclined sliding wedge block 34. When the support frame box 21 moves along the inside of the support frame box 24, the two inclined sliding wedge blocks 34 are connected to the support frame box 24 through the telescopic rods 25. When the support frame box 21 slides to one side, the sliding distance of the support frame box 21 can be limited by the extension and retraction of the two telescopic rods 25. At the same time, the telescopic rods 25 play a guiding role for the support frame box 21.

[0042] Each support frame box 24 has a threaded screw 26 rotatably mounted on its inner wall, and a knob rod at the top of each support frame box 24. The threaded screw 26 is connected to the support frame box 24 via a bearing ring, and a bevel gear is provided at the end of the threaded screw 26. The threaded screw 26 and the knob rod are interlocked at a 90-degree angle. The threaded screw 26 is horizontally installed inside the support frame box 24, with its axis parallel to the sliding direction of the thrust plate 27. The knob rod is vertically installed at the top of the support frame box 24, with its axis intersecting the axis of the threaded screw 26 at a 90-degree angle. The two are orthogonally transmitted through a pair of bevel gears. By rotating the knob rod, the threaded screw 26 is driven to rotate clockwise inside the support frame box 24. The thread helix angle of the threaded screw 26 and the thrust plate 27 is less than the friction angle. When the threaded screw 26 stops rotating, the threaded screw 26 and the thrust plate 27 can lock themselves to prevent loosening.

[0043] Each support frame box 24 has a thrust plate 27 slidably installed inside. Each thrust plate 27 has a threaded sleeve inside. Each thrust plate 27 has a hollow structure. A threaded screw 26 passes through the inside of the thrust plate 27. By driving the threaded screw 26 to rotate clockwise, the threaded screw 26 drives the thrust plate 27 to slide to one side. The thrust plate 27 drives the guide rail plate 28 to slide synchronously.

[0044] Each thrust plate 27 has a guide rail plate 28 fixedly installed on both sides. Each guide rail plate 28 has a roller 29 rotatably installed on its inner side. The guide rail plate 28 fits into the groove inside the support frame box 24. The guide rail plate 28 slides along the inner wall of the support frame box 24. The guide rail plate 28 drives the roller 29 to move, allowing the roller 29 to slide towards the support frame box 31. The roller 29 presses against one side of the inclined sliding wedge block 34. The roller 29 can rotate freely inside the guide rail plate 28. The roller 29 presses against one side of the inclined sliding wedge block 34, applying force to the inclined sliding wedge block 34, causing the inclined sliding wedge block 34 to drive the clamping plate 33 to slide horizontally.

[0045] Each support frame box 21 slides in conjunction with the guide groove of the support frame box 1 24, and its internal chamber slides in conjunction with the inclined sliding wedge block 34. Each support frame box 21 is formed by bending and welding steel plate. The inclined surface of the inclined sliding wedge block 34 rolls in contact with the roller 29, its end face is welded and fixed to the clamping plate 33, and its middle part is welded and connected to the reset rod 32 and the telescopic rod 25. It slides horizontally under the pressure of the roller 29.

[0046] Example 2

[0047] This embodiment specifically discloses a construction method for elevator steel structure hoist foundation, including the following steps:

[0048] The first step involves excavating a foundation pit (11). A concrete curb (12) is positioned using surveying and layout. Vertical reinforcing bars (15) are pre-installed during the construction of the structural slab. Concrete is poured to form a concrete base with the vertical reinforcing bars (15), providing a horizontal bearing surface for the steel column (13). The concrete curb (12) is nested within the top surface of the foundation pit (11). The interior is a hollow cavity with pre-drilled through holes in the side walls (coaxial with the installation holes of side steel plate 16 and side steel plate 17). Anchorage holes for the vertical reinforcing bars (15) are pre-drilled in the top surface. The inner side wall is bolted to side steel plate 16, and the outer side wall is connected to side steel plate 17 via steel ropes (18). When hoisting the steel column (13), shims (14) are added to the bottom and then placed on top of the concrete curb (12). Shims (14) are made of fiber rubber and function as both shock absorbers and level adjusters, absorbing the impact of hoisting. The thickness of the shims (14) is used to adjust the column's level. The vertical reinforcing bars (15) are inserted into the steel... Inside the steel column 13, a vertical restraint mechanism is formed between the steel reinforcement and the column to prevent it from tilting and to initially constrain its vertical displacement deviation. Side steel plate 16 is bolted to the inner wall of the steel column 13, positioned to fit against the inner wall of the concrete retaining wall 12, serving as the inner force-bearing end of the tension system. One end of the steel rope 18 passes through a pre-drilled hole in side steel plate 16, then through a pre-drilled channel in the concrete retaining wall 12, and inserts into the outer side steel plate 2. Inside the mounting hole of 17, the end is fixed with a tail cone sleeve 19. The tail cone sleeve 19 has a conical structure and a diameter larger than the hole diameter of the side steel plate 16. When the steel rope 18 is tensioned, the tail cone sleeve 19 will be stuck on the inside of the side steel plate 16, forming an anchor point of "steel rope 18 - tail cone sleeve 19 - inner steel plate" to prevent it from being pulled off. The steel rope 18 is made of high-strength steel wire rope, which has both flexibility and tensile strength. It can transmit horizontal tension and correct the gap deviation between the column and the countersill.

[0049] The collar 21 is a ring-shaped component. Its inner side is in contact with the surface of the steel rope 18, and its outer side is connected to the mounting hole wall of the side steel plate 17 through multiple sets of elastic spring plates 22. When there is a misalignment between the steel rope 18 and the mounting hole, the collar 21 expands outward under force, and the spring plates 22 bend and deform, allowing the collar 21 to finely adjust its position within the mounting hole and automatically adapt to the axis of the steel rope 18. This prevents the steel rope 18 from being jammed or generating shear stress. The elastic deformation of the spring plates 22 can absorb the vibration during the tensioning of the steel rope 18, preventing rigid impact from causing wear or damage to the steel rope 18 during installation. The hole is cracked. The positioning bushing 23 is fitted on the outside of the collar 21 with a rounded transition at the edge. On the one hand, it seals the gap of the installation hole to prevent high-strength grout from entering the hole later and affecting the movement of the steel rope 18. On the other hand, the rounded transition avoids stress concentration at the edge of the installation hole and extends the service life of the structure. The steel rope 18 and the tail cone sleeve 19 are connected by a crimping method. The end of the steel rope 18 is inserted into the internal through hole of the tail cone sleeve 19. The cylindrical section of the tail cone sleeve 19 is radially crimped by a special hydraulic crimping machine so that the inner wall of the tail cone sleeve 19 is tightly engaged with the steel rope 18.

[0050] In the second step, the reset spring inside the reset rod 32 is in an extended state, pulling the inclined sliding wedge block 34 to open outward. The clamping plate 33 and the arc-shaped clamp 35 move outward synchronously with the inclined sliding wedge block 34. The arc-shaped clamp 35 is in an open state, and the steel rope 18 can freely pass through the clamp gap. The second support box 31 is in the initial position inside the first support box 24. The telescopic rod 25 is fully extended, limiting the initial outward movement distance of the second support box 31. Rotate the knob rod at the top of the first support box 24, and drive the threaded screw 26 to rotate clockwise through the bevel gear transmission. The thread helix angle between the threaded screw 26 and the thrust plate 27 is less than the friction angle, which has "self-locking" property - when the screw stops rotating, the thrust plate 27 will not rebound in the opposite direction. The threaded sleeve inside the thrust plate 27 meshes with the screw. When the screw rotates, the thrust plate 27 slides along the screw axis toward the second support box 31, and at the same time drives the guide rail plates 28 at both ends to move synchronously.

[0051] The guide plate 28 slides along the groove of the support frame box 24, driving the inner roller 29 to move towards the inclined side of the inclined wedge block 34. The roller 29 contacts the inclined surface of the inclined wedge block 34, generating a horizontal component force. This force overcomes the spring force of the reset rod 32 and pushes the two inclined wedge blocks 34 to slide symmetrically towards the steel rope 18. The inclined wedge blocks 34 drive the clamping plate 33 and the arc-shaped clamp 35 to move towards the steel rope 18. The teeth 36 on the inner side of the arc-shaped clamp 35 bite the surface of the steel rope 18, achieving initial clamping of the steel rope 18 and preventing slippage. The push plate 27 continues to slide, and the roller 29 generates an axial component force by pressing the inclined wedge block 34. The second support frame box 31 is pushed to slide outward (away from the concrete curb 12) along the guide groove of the first support frame box 24. The telescopic rod 25 retracts synchronously with the sliding of the second support frame box 31, limiting the sliding distance and preventing over-tensioning of the steel rope 18. The second support frame box 31 drives the clamping plate 33 and the arc clamp 35 to move outward together. The arc clamp 35 has already engaged the steel rope 18, so it pulls the steel rope 18 to move outward synchronously. The tail cone sleeve 19 is stuck inside the side steel plate 16. The steel rope 18 generates tension, pulling the side steel plate 16 and the steel column 13 to stick tightly to the inner wall of the concrete curb 12, eliminating the gap deviation between the column and the curb.

[0052] Once the steel rope 18 is tensioned to the designed tension, stop rotating the knob. The self-locking property of the threaded rod 26 maintains the position of the thrust plate 27, and the tension state of the steel rope 18 is permanently locked. The horizontal steel plate (the base steel plate where the gasket 14 is located) and the vertical steel plate (side steel plate 16 and side steel plate 17) are welded into an integral frame. The gap between the steel plate and the concrete curb 12 is filled with high-strength grout to eliminate the gap, so that the steel column 13, the steel plate and the concrete curb 12 form a rigid whole, avoiding uneven stress. Rotate the knob in the opposite direction, the threaded rod 26 rotates counterclockwise, the thrust plate 27 moves backward, the roller 29 leaves the inclined sliding wedge block 34, the reset spring of the reset rod 32 pulls the inclined sliding wedge block 34 outward, the clamping plate 33 and the arc-shaped clamp 35 open, the steel rope 18 is released, the tensioning mechanism can be removed or the position of the steel column 13 can be adjusted.

[0053] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A construction device for a steel structure elevator shaft foundation, comprising a foundation pit (11), a concrete curb (12), and a steel column (13), wherein the top of the concrete curb (12) is provided with a plurality of vertical reinforcing bars (15), and the bottom surface of the steel column (13) is fixedly installed with a gasket (14), the inner side wall of the concrete curb (12) is provided with two side steel plates (16), the outer side wall of the concrete curb (12) is provided with two side steel plates (17), and a plurality of steel ropes (18) are provided inside the side steel plates (16), and each steel rope (18) is fixedly installed with a tail cone sleeve (19) at its end, characterized in that, Also includes: Multiple positioning components are provided, each of which is located inside the side steel plate 2 (17). Each positioning component includes a collar (21), multiple spring plates (22) and a positioning bushing (23). Multiple support frame boxes 1 (24) are provided at the top of each side steel plate 2 (17). Support frame box 2 (31) is slidably installed inside each support frame box 1 (24).

2. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Each of the support frame boxes (31) has a mounting plate (33) slidably mounted on its bottom surface. Each of the mounting plates (33) has a sloping sliding wedge block (34) fixedly mounted on its top. Each of the mounting plates (33) has an arc-shaped clamp (35) fixedly mounted on its inner side. Each of the arc-shaped clamps (35) has multiple teeth (36) on its inner sidewall.

3. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Each of the collars (21) is specifically an open elastic ring. Multiple sets of spring plates (22) are welded and fixed to the collar (21). The inner side is fitted with the steel rope (18) with a gap. The whole is embedded in the mounting hole of the side steel plate (17). One end of each spring plate (22) is welded to the outer wall of the collar (21), and the other end is welded to the mounting hole wall of the side steel plate (17).

4. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Each of the two sides of the second support box (31) is provided with a slider, and two reset rods (32) are fixedly installed on the inner sidewall of each second support box (31). The reset rods (32) are connected to the second support box (31) by welding.

5. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Two telescopic rods (25) are fixedly installed on the inner sidewall of each of the support boxes (24), and the top of each telescopic rod (25) is welded and fixed to the inclined sliding wedge (34).

6. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Each of the support box 1 (24) has a threaded screw (26) rotatably mounted on its inner sidewall, and each of the support box 1 (24) has a knob rod at its top. The threaded screw (26) is connected to the support box 1 (24) through a bearing ring.

7. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Each of the support frame boxes (24) has a thrust plate (27) slidably installed inside, and each of the thrust plates (27) has a threaded sleeve inside, and each thrust plate (27) has a hollow structure.

8. The elevator steel structure hoist foundation construction device as described in claim 7, characterized in that, Each of the thrust plates (27) has a guide rail plate (28) fixedly installed on both sides. Each of the guide rail plates (28) has a roller (29) rotatably installed on its inner side. The guide rail plate (28) fits into the groove inside the support frame box (24).

9. The elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Each of the second support box (31) slides in conjunction with the guide groove of the first support box (24), and the internal cavity slides in conjunction with the inclined sliding wedge (34). Each of the second support box (31) is formed by bending and welding steel plate, and the inclined surface of the inclined sliding wedge (34) rolls in contact with the roller (29).

10. A construction method for an elevator steel structure hoist foundation as described in claims 1-9, wherein the method is applied to an elevator steel structure hoist foundation construction device as described in claim 1, characterized in that, Includes the following steps: Step 1: Excavate the foundation pit (11), reserve vertical steel bars (15) during construction, pour concrete to form a concrete inverted wall (12) with vertical steel bars (15), which serves as the horizontal bearing base for the steel column (13). Steel rope through holes are reserved on the side wall of the inverted wall, and vertical steel bar anchoring holes are reserved on the top surface. Fiber rubber gaskets (14) are installed on the bottom surface of the steel column (13), and hoisted to the top of the concrete inverted wall (12). The vertical steel bars (15) are inserted into the inside of the column to form a vertical limit. The side steel plate (16) is fixed to the inner side wall of the column with bolts and fits against the inner wall of the inverted wall. Step 2: One end of the steel rope (18) passes through the reserved hole of the side steel plate 1 (16), through the reserved channel of the concrete countersunk wall (12), and is inserted into the installation hole of the side steel plate 2 (17) on the outside. The end is fixed with the tail cone sleeve (19) by pressing. The support frame box 1 (24) is installed on the side steel plate 2 (17). The support frame box 2 (31) is in the initial position. The reset spring of the reset rod (32) pulls the inclined sliding wedge block (34) outward. The arc clamp (35) is in the open state. The steel rope (18) can freely pass through the clamp gap. Step 3: Drive the threaded screw (26) to rotate through the bevel gear transmission, which drives the thrust plate (27) to slide towards the support frame box 2 (31). The guide plate (28) drives the roller (29) to squeeze the inclined sliding wedge block (34), so that the teeth (36) of the arc clamp (35) bite the surface of the steel rope (18). The thrust plate (27) continues to slide, pushing the support frame box 2 (31) to move outward, pulling the steel rope (18) to tension. The tail cone sleeve (19) is locked inside the side steel plate 1 (16), so that the steel column (13) is tightly attached to the inner wall of the concrete inverted wall (12). After reaching the design tension, stop rotating and use the self-locking property of the threaded screw (26) to lock the tension state.

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