Inclined pile guide frame and steel casing lowering method based on inclined pile guide frame

Abstract

The invention discloses an inclined pile guide frame and a steel casing based on the inclined pile guide frame, and relates to the technical field of building construction, the inclined pile guide frame comprises a steel casing body and a guide frame assembly used for guiding the steel casing body; according to the inclined pile guide frame for the lower steel casing, the guide frame assemblies, the longitudinal beams and the second short beams are welded to form the inclined pile guide frame for the lower steel casing, and in the steel casing lowering process, the four lowering assemblies are controlled to operate synchronously through the linkage assembly; the lowering assembly is matched with the hooking assembly, so that the lowering speed and depth of the sectional type steel casing bodies can be accurately controlled, the multiple steel casing bodies can be synchronously welded in the lowering process to form the complete steel casing, and compared with a traditional mode that welding is conducted firstly and then overall lowering is conducted, the requirement for hoisting equipment is lowered, and the production efficiency is improved. And adjustment is easy, safety is high, meanwhile, cost and difficulty of links such as transportation are reduced, and high economic value is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to an inclined pile guide frame and a steel casing lowering method based on the inclined pile guide frame. Background Art

[0002] Steel casing is used to protect the bored piles during the process of manual bored pile construction. Due to the unstable soil, it is very difficult to construct reinforced concrete retaining walls, so steel retaining walls are used to prevent the hole from collapsing and avoid affecting the construction progress and safety. The steel casing is a circular barrel with empty ends made of iron sheets according to the size of the bored piles. The inclined pile guide frame is a frame used to guide the steel casing when it is lowered. Its bottom will extend to the silt layer, and then the steel casing will be lowered and poured with concrete. In addition, the steel casing is not recyclable.

[0003] At present, the inclined pile guide frame used in the process of lowering the steel casing is mainly welded with horizontal and longitudinal H-shaped steels, and a channel for lowering the steel casing is reserved in the middle. The overall structure is simple in function. Before the steel casing is lowered, the segmented steel casing needs to be welded into a whole according to the depth of the foundation pit, and then it is lifted by practical lifting equipment and lowered from the reserved channel at the top of the inclined pile guide frame. The welded steel casing is long and heavy, and not only large lifting equipment is required in the lowering process, but also the posture and position adjustment is difficult, and there are certain safety hazards.

[0004] Therefore, we propose an inclined pile guide frame and a steel casing lowering method based on the inclined pile guide frame to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide an inclined pile guide frame and a method for lowering a steel casing based on the inclined pile guide frame, so as to solve the problem that the inclined pile guide frame for lowering the existing steel casing proposed in the above background technology has a simple structure and function, and the steel casing welded to match the depth size of the foundation pit is not only costly to be lowered from the inside of the guide frame after being hoisted by large lifting equipment, but also has difficulty in adjusting the posture and position, and there are certain safety hazards.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an inclined pile guide frame and a steel casing based on the inclined pile guide frame, comprising: a steel casing body and a guide frame assembly for guiding the steel casing body, a lowering assembly is arranged at the top of the guide frame assembly near the four corners, a hook assembly is arranged at the bottom of the lowering assembly, the lowering assembly and the hook assembly cooperate to accurately control the depth below the steel casing body, linkage assemblies for driving the four lowering assemblies are arranged at the positions around the top of the guide frame assembly, the lowering assembly comprises two second mounting parts, and a second mounting part is rotatably connected with the outer surfaces of the two second mounting parts. A first rotating shaft, a wheel frame is installed near the middle between the outer surfaces of the first rotating shaft, a steel cable is wound on the outer surface of the wheel frame, the hook assembly includes a first rectangular plate and a second rectangular plate, support sleeves are welded to the outer surface of one side of the first rectangular plate near three corners, bolts are installed on the outer surface of one side of the second rectangular plate near three corners, the ends of the bolts pass through the outer surface of the second rectangular plate and are threadedly connected to the support sleeves, a rotating pin is rotatably connected between the outer surfaces of the first rectangular plate and the second rectangular plate at a position away from the three support sleeves, and a hook is rotatably connected to the outer surface of the rotating pin near the middle.

[0007] Preferably, the guide frame assembly comprises two long beams, which are arranged in parallel and have two parallel first short beams welded near the middle between their outer surfaces, two extension beams are welded and fixed to the outer surfaces of the opposite sides of the two long beams, and a connecting beam is welded and fixed between the outer surfaces of adjacent extension beams, and the extension beams and the first short beams are located on the same straight line.

[0008] Preferably, four longitudinal beams are fixedly connected to the bottom of the two long beams, and the positions of the intersections of the four longitudinal beams and the long beams and the first short beams correspond to each other, and a plurality of second short beams are welded and fixed equidistantly between the outer surfaces of adjacent longitudinal beams, and the long beams, the first short beams, the longitudinal beams and the second short beams cooperate to form a steel casing guide frame, and the number of the steel casing bodies is set to multiple and lifting rings are symmetrically welded on the outer surface of the uppermost steel casing body near the top.

[0009] Preferably, the bottom of the lowest steel casing body among the multiple steel casing bodies is connected to the hook to form a hook, and the end of the hook close to the steel casing body is provided with an inclined surface, the second mounting piece is fixedly connected to the top of the long beam and the first short beam, both ends of the first rotating shaft are fixedly connected to the first bevel gear, a connecting plate is fixedly installed between the tops of the first rectangular plate and the second rectangular plate, and the bottom end of the steel cable is fixedly connected to the top of the connecting plate.

[0010] Preferably, the number of the linkage components is four and one of the linkage components is additionally equipped with a drive motor, a drive gear and a transmission gear. The linkage component includes two fourth mounting parts, and a third rotating shaft is rotatably connected between the outer surfaces of the two fourth mounting parts. The outer surface of the third rotating shaft is symmetrically fixed with second bevel gears near both ends, and the second bevel gear is meshingly connected to the first bevel gear.

[0011] Preferably, the fourth mounting member is welded and fixed to the top of the long beam and the extension beam, the drive motor is welded and fixed to the top of one of the connecting beams, the drive gear is fixedly installed at the output end of the drive motor, the transmission gear is fixedly installed on the outer surface of one of the third rotating shafts near the middle position, and the drive gear and the transmission gear are meshingly connected.

[0012] Preferably, the hook is located at one end away from the steel casing body and is bent outward, a support plate is welded between the outer surfaces of the first rectangular plate and the second rectangular plate near the outside, and the support plate and the bending part of the hook end are parallel, and a spring is welded between the support plate and the outer surface of the hook, and the spring is used to push the inner end of the hook outward.

[0013] Preferably, two first mounting parts are fixedly connected to the top of each of the long beam and the first short beam near the middle position, multiple sets of screws are fixedly installed between the outer surfaces of the two first mounting parts, and two bearing rollers are symmetrically installed on the outer surfaces of the screws near the middle position. The steel casing body passes downward from the position between the long beam and the first short beam and its outer surface is in contact with the outer surfaces of the bearing rollers.

[0014] Preferably, a third mounting member is welded and fixed to the inner outer surface of the second mounting member, a second rotating shaft is rotatably connected between the outer surfaces of adjacent third mounting members, a guide pulley is sleeved on the outer surface of the second rotating shaft, and the outer surface of the steel cable passes through the wheel groove of the guide pulley.

[0015] An inclined pile guide frame and a method for lowering a steel casing based on the inclined pile guide frame, comprising the following steps:

[0016] S1. When lowering the steel casing body, first weld the long beam and the first short beam to form a rectangular lowering opening in the middle, then weld four longitudinal beams matching the depth of the foundation pit through the second short beam to form the longitudinal part of the guide frame, then put it into the foundation pit and expose its top on the ground, then weld the long beam and the first short beam to the top of the longitudinal part of the guide frame to form the steel casing inclined pile guide frame body, then weld the lowering assembly and the linkage assembly to the top of the guide frame assembly and adjust them;

[0017] S2. Then, the steel casing body with a segmented length of 1m, a wall thickness of 20mm and an outer diameter of 2m is hoisted by a small hoisting device and lowered from the rectangular opening between the long beam and the first short beam. During the lowering process, the hook in the matching hook assembly in the lowering assembly is hooked on the bottom of the steel casing. At this time, four equidistantly distributed hooks hook the steel casing to support it. Then, the small hoisting device is used to hoist and adjust the other steel casing body according to the above steps;

[0018] S3, then start the driving motor to drive the driving gear to rotate, after the driving gear rotates, it will transmit the rotational force through the transmission gear and then drive the third rotating shaft to rotate, after the third rotating shaft rotates, the two second bevel gears on its surface will drive the corresponding first bevel gear to rotate, after the first bevel gear rotates, it will drive the first bevel gear on the other side to rotate synchronously through the first rotating shaft, and during the rotation of the first rotating shaft, the wheel frame on its surface will rotate synchronously, at this time, the steel cable on the surface of the wheel frame will be continuously released, and the bottom hook will be hooked on the steel casing body, and the steel cable will be in a straight state under the action of gravity, and through this step, the segmented steel casing body can be lowered to a depth slightly higher than the ground at the top;

[0019] S4. Then align the bottom of the steel casing body hoisted from above with the top of the steel casing body being lowered, and then use a welding machine to weld the two into a whole. Then, according to the above steps, lower and weld multiple segmented steel casing bodies in sequence, so that they form a whole and fall into the foundation pit. When the welded steel casing body is close to the bottom of the foundation pit, use the lifting mechanism to hook the lifting ring on the surface of the topmost steel casing body and lift it up, then separate the hook and the steel casing body, and finally disconnect the lifting device and the steel casing body so that it falls into the foundation pit to complete the steel casing lowering operation, and then carry out subsequent operations such as concrete injection.

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

[0021] 1. When in use, the guide frame assembly, the longitudinal beam and the second short beam are welded to form an inclined pile guide frame for the steel casing below. In the process of lowering the steel casing, the linkage assembly controls the synchronous operation of the four lowering assemblies, and the lowering assembly cooperates with the hook assembly to accurately control the lowering speed and depth of the segmented steel casing body. In the lowering process, multiple steel casing bodies can be welded synchronously to form a complete steel casing. Compared with the traditional method of welding first and then lowering the whole, it not only reduces the demand for lifting equipment, but also has simple adjustment and high safety. At the same time, it reduces the cost and difficulty of transportation and other links, and has high economic value;

[0022] 2. When the steel casing body is lowered through the device, the surface of the steel casing body will contact the bearing roller inside the first mounting member, and the bearing roller will rotate on the surface of the screw under the action of friction, thus avoiding direct friction between the steel casing body and the guide frame, and effectively reducing the friction damage to the steel casing body during the lowering process;

[0023] 3. When the wheel frame releases the internal steel cable, the guide pulley will rotate under the action of friction because the surface of the steel cable passes through the guide pulley on the inner side of the third mounting member, which effectively avoids the steel cable and the guide frame surface from contacting and being damaged. This not only improves the service life of the steel cable, but also guides it to avoid being blocked by the longitudinal guide frame below, ensuring that the steel casing body is stably lowered. The structure is simple, and the use effect of the device is effectively improved.

[0024] 4. During use, after the steel casing body is lowered to near the bottom of the foundation pit and the lifting ring is locked using a lifting device and is in a suspended state, the drive motor is started to cooperate with other linkage structures to allow the hook to continue to move downward. At this time, under the weight of the hook assembly, the entire hook assembly will continue to move downward. When the hook is detached from the bottom of the steel casing body, the spring on the support plate will generate thrust and push the bend at the tail of the hook. At this time, the hook will rotate with the rotating pin as the center. At this time, the hook end of the hook will retract between the inside of the first rectangular plate and the second rectangular plate. Subsequently, the drive motor is started to rotate in the opposite direction to retract the hook assembly above the ground. During the process, no foreign objects will be hooked to cause the device to get stuck or damaged, thereby further ensuring the reliability of the use of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of an inclined pile guide frame and a steel casing based on the inclined pile guide frame of the present invention;

[0026] Figure 2 A top view of an inclined pile guide frame and a steel casing based on the inclined pile guide frame of the present invention;

[0027] Figure 3 A cross-sectional view of an inclined pile guide frame and a steel casing based on the inclined pile guide frame of the present invention;

[0028] Figure 4 It is a schematic diagram of a longitudinal beam structure of an inclined pile guide frame and a steel casing based on the inclined pile guide frame of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of a steel casing body of an inclined pile guide frame and a steel casing based on the inclined pile guide frame according to the present invention;

[0030] Figure 6It is a structural schematic diagram of a guide frame assembly of an inclined pile guide frame and a steel casing based on the inclined pile guide frame of the present invention;

[0031] Figure 7 It is a schematic structural diagram of a slanted pile guide frame and a linkage assembly of a steel casing based on the slanted pile guide frame according to the present invention;

[0032] Figure 8 It is a partial structural schematic diagram of an inclined pile guide frame and a steel casing based on the inclined pile guide frame of the present invention;

[0033] Fig. 9 It is a schematic structural diagram of an inclined pile guide frame and a steel casing lowering assembly based on the inclined pile guide frame according to the present invention;

[0034] Fig.10 The present invention is a schematic structural diagram of an inclined pile guide frame and a hook assembly of a steel casing based on the inclined pile guide frame.

[0035] In the figure:

[0036] 1. Guide frame assembly; 101. Long beam; 102. First short beam; 103. Extension beam; 104. Connecting beam; 105. First mounting piece; 106. Screw; 107. Bearing roller; 2. Longitudinal beam; 21. Second short beam; 22. Steel casing body; 23. Lifting ring; 3. Lowering assembly; 301. Second mounting piece; 302. First rotating shaft; 303. Wheel frame; 304. First bevel gear; 305. Steel cable; 306. Third mounting piece; 307. Second Rotating shaft; 308, guide pulley; 4, hook assembly; 401, first rectangular plate; 402, support sleeve; 403, support plate; 404, second rectangular plate; 405, bolt; 406, rotating pin; 407, hook; 408, spring; 409, inclined plane; 410, connecting plate; 5, linkage assembly; 501, fourth mounting member; 502, third rotating shaft; 503, second bevel gear; 504, transmission gear; 505, driving gear; 506, driving motor. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figure 1-Figure 10As shown: an inclined pile guide frame and a steel casing based on the inclined pile guide frame, comprising: a steel casing body 22 and a guide frame assembly 1 for guiding the steel casing body 22, a lowering assembly 3 is arranged near the four corners of the top of the guide frame assembly 1, a hook assembly 4 is arranged at the bottom of the lowering assembly 3, the lowering assembly 3 and the hook assembly 4 cooperate to accurately control the depth below the steel casing body 22, and a linkage assembly 5 for driving the four lowering assemblies 3 is arranged at the positions around the top of the guide frame assembly 1, and the lowering assembly 3 includes two second mounting members 301, and a first rotating shaft 302 is rotatably connected between the outer surfaces of the two second mounting members 301, and the outer surfaces of the first rotating shaft 302 are near the middle A wheel frame 303 is installed at the position, and a steel cable 305 is wound on the outer surface of the wheel frame 303. The hook assembly 4 includes a first rectangular plate 401 and a second rectangular plate 404. Support sleeves 402 are welded to the outer surface of one side of the first rectangular plate 401 near three corners, and bolts 405 are installed to the outer surface of one side of the second rectangular plate 404 near three corners. The ends of the bolts 405 penetrate the outer surface of the second rectangular plate 404 and are threadedly connected to the support sleeves 402. A rotating pin 406 is rotatably connected between the outer surfaces of the first rectangular plate 401 and the second rectangular plate 404, and is located away from the three support sleeves 402. A hook 407 is rotatably connected to the outer surface of the rotating pin 406 near the middle.

[0039] like Figure 1-Figure 3 and Figure 6 As shown, the guide frame assembly 1 includes two long beams 101, which are arranged in parallel and have two parallel first short beams 102 welded near the middle between the outer surfaces, two extension beams 103 are welded and fixed to the outer surfaces of the opposite sides of the two long beams 101, and a connecting beam 104 is welded and fixed between the outer surfaces of adjacent extension beams 103, the extension beams 103 and the first short beams 102 are located on the same straight line, and a rectangular lowering opening is formed in the middle of the long beams 101 and the first short beams 102 after being welded, which has the effect of guiding the steel casing body 22 during the lowering process, and the extension beams 103 and the connecting beams 104 are welded to each other and then welded and fixed to the long beams 101 again to form a bracket for installing other structural components.

[0040] like Figure 1-Figure 6As shown, four longitudinal beams 2 are fixedly connected to the bottom of the two long beams 101, and the positions of the intersections of the four longitudinal beams 2 and the long beam 101 and the first short beam 102 correspond to each other. A plurality of second short beams 21 are welded and fixed equidistantly between the outer surfaces of adjacent longitudinal beams 2. The long beam 101, the first short beam 102, the longitudinal beam 2 and the second short beam 21 cooperate to form a steel casing guide frame. The number of steel casing bodies 22 is set to be multiple, and the outer surface of the uppermost steel casing body 22 is symmetrically welded with a lifting ring 23 near the top. The longitudinal beam 2 and the second short beam 2 1 is welded to form the longitudinal part of the guide frame, and is welded and fixed with the long beam 101 and the first short beam 102 to form a complete inclined pile guide frame, which is used to guide the steel casing when it is lowered, and the steel casing moves downward inside the guide frame, so it can be used for foundation pits in a slightly inclined and vertical state. The steel casing body 22 is 1m long, 20mm thick, and 2m in outer diameter. A complete steel casing is formed after multiple sections are welded. After pouring concrete inside, an external protective cover is formed, which does not need to be removed later. The lifting ring 23 is used to temporarily lift the steel casing.

[0041] like Figure 1-Figure 10 As shown, the bottom of the lowest steel casing body 22 among the multiple steel casing bodies 22 is hooked and connected with the hook 407, and the end of the hook 407 close to the steel casing body 22 is provided with an inclined surface 409, the second mounting member 301 is fixedly connected to the top of the long beam 101 and the first short beam 102, the first bevel gear 304 is fixedly connected to both ends of the first rotating shaft 302, a connecting plate 410 is fixedly installed between the first rectangular plate 401 and the top of the second rectangular plate 404, and the bottom end of the steel cable 305 and the top of the connecting plate 410 are connected. The four hooks 407 are fixedly connected, and when the steel casing is hooked, the depth and speed of the lowering of the steel casing body 22 can be controlled manually, so that it can be lowered and welded at the same time. Compared with the traditional method of welding first and then lowering the whole, it not only reduces the demand for lifting equipment, but also is simple to adjust and has higher safety. At the same time, it reduces the cost and difficulty of transportation and other links, and has higher economic value. The connecting plate 410 is mainly used to connect the bottom end of the steel cable 305 with the first rectangular plate 401 and the second rectangular plate 404.

[0042] like Figure 1-Figure 3 , Figure 7 and Figure 8As shown, there are four linkage components 5 and one of the linkage components 5 is additionally equipped with a driving motor 506, a driving gear 505 and a transmission gear 504. The linkage component 5 includes two fourth mounting members 501, and a third rotating shaft 502 is rotatably connected between the outer surfaces of the two fourth mounting members 501. The outer surface of the third rotating shaft 502 is symmetrically fixedly mounted with a second bevel gear 503 near both ends. The second bevel gear 503 is meshedly connected with the first bevel gear 304. The fourth mounting member 501 is welded and fixed to the top of the long beam 101 and the extension beam 103. The driving motor 506 is welded and fixed to one of the connecting beams. At the top of 104, a driving gear 505 is fixedly mounted on the output end of a driving motor 506, and a transmission gear 504 is fixedly mounted on the outer surface of one of the third rotating shafts 502 near the middle position. The driving gear 505 and the transmission gear 504 are meshed and connected. After the driving motor 506 is started to drive the driving gear 505 to rotate, the driving gear 505 will drive the transmission gear 504 and the third rotating shaft 502 to rotate synchronously. At this time, the second bevel gear 503 on the surface of the third rotating shaft 502 will drive the first bevel gear 304 in the lowering component 3 to rotate synchronously, thereby forming a linkage, so that the four wheel frames 303 can synchronously retract and release the steel cables 305.

[0043] like Figure 1-Figure 3 , Figure 8 and Fig.10 As shown, the hook 407 is located at one end away from the steel casing body 22 and is bent outward, a support plate 403 is welded between the outer surfaces of the first rectangular plate 401 and the second rectangular plate 404 near the outer side, and the support plate 403 and the bending part of the end of the hook 407 are parallel, and a spring 408 is welded between the outer surfaces of the support plate 403 and the hook 407. The spring 408 is used to push the inner end of the hook 407 outward, and the bending part of the rear end of the support plate 403 and the hook 407 cooperates to connect the spring 408. By designing the rear end of the hook 407 to be bent, it is convenient for the spring 408 to apply thrust.

[0044] like Figure 1-Figure 3 and Figure 6As shown, two first mounting members 105 are fixedly connected near the middle position of the top of each long beam 101 and the first short beam 102, and multiple groups of screws 106 are fixedly installed between the outer surfaces of the two first mounting members 105. Two bearing rollers 107 are symmetrically installed on the outer surface of the screw 106 near the middle position. The steel casing body 22 passes downward from the position between the long beam 101 and the first short beam 102, and the outer surface is in contact with the outer surface of the bearing roller 107. When the steel casing body 22 is lowered through this device, the surface of the steel casing body 22 will contact the bearing roller 107 on the inner side of the first mounting member 105, and the bearing roller 107 will rotate on the surface of the screw 106 under the action of friction force, thereby avoiding direct friction between the steel casing body 22 and the guide frame, and effectively reducing the friction damage suffered by the steel casing body 22 during the lowering process.

[0045] like Figure 1-Figure 3 , Figure 8 and Fig. 9 As shown, a third mounting member 306 is welded and fixed to the inner outer surface of the second mounting member 301, and a second rotating shaft 307 is rotatably connected between the outer surfaces of adjacent third mounting members 306. A guide pulley 308 is sleeved on the outer surface of the second rotating shaft 307, and the outer surface of the steel cable 305 passes through the wheel groove of the guide pulley 308. When the wheel frame 303 releases the internal steel cable 305, the surface of the steel cable 305 passes through the guide pulley 308 on the inner side of the third mounting member 306. At this time, the guide pulley 308 will rotate under the action of friction, which effectively avoids the steel cable 305 and the guide frame surface from contacting and being damaged, which not only improves the service life of the steel cable 305, but also guides it to avoid being blocked by the longitudinal guide frame part below, thereby ensuring that the steel casing body 22 is stably lowered. The structure is simple and the use effect of the device is effectively improved.

[0046] In the present invention, when the steel casing body 22 is lowered, the long beam 101 and the first short beam 102 are first welded to form a rectangular lowering opening in the middle, and then four longitudinal beams 2 that match the depth of the foundation pit are welded through the second short beam 21 to form the longitudinal part of the guide frame, which plays the effect of guiding the steel casing body 22 during the lowering process, and then it is put into the foundation pit and its top is exposed on the ground, and then the long beam 101 and the first short beam 102 are welded to the top of the longitudinal part of the guide frame to form the steel casing inclined pile guide frame body, and then the lowering component 3 and the linkage component 5 are welded to the top of the guide frame component and adjusted.

[0047] After that, the steel casing body 22 with a segmented length of 1m, a wall thickness of 20mm and an outer diameter of 2m is hoisted by a small hoisting device and lowered from the rectangular opening between the long beam 101 and the first short beam 102. During the lowering process, the hook 407 in the matching hook assembly 4 in the lowering assembly 3 is hooked on the bottom of the steel casing. At this time, the four equidistantly distributed hooks 407 hook the steel casing to support it. Then, the small hoisting device is used to hoist and adjust the other steel casing body 22 according to the above steps.

[0048] Then, the driving motor 506 is started to drive the driving gear 505 to rotate. After the driving gear 505 rotates, the rotational force is transmitted through the transmission gear 504, and then the third rotating shaft 502 is driven to rotate. After the third rotating shaft 502 rotates, the two second bevel gears 503 on its surface will drive the corresponding first bevel gear 304 to rotate. After the first bevel gear 304 rotates, it will drive the first bevel gear 304 on the other side to rotate synchronously through the first rotating shaft 302. During the rotation of the first rotating shaft 302, the wheel frame 303 on its surface will rotate synchronously. At this time, the steel cable 305 on the surface of the wheel frame 303 will be continuously released, and the bottom hook 407 is hooked on the steel casing body 22. Under the action of gravity, the steel cable 305 is in a straight state. Through this step, the segmented steel casing body 22 can be lowered to a depth slightly higher than the ground at the top.

[0049] Then align the bottom of the steel casing body 22 hoisted from above with the top of the steel casing body 22 lowered, and then use a welding machine to weld the two into a whole. Then, according to the above steps, lower and weld the multiple segmented steel casing bodies 22 in sequence, so that they can be dropped into the foundation pit after forming a whole. When the welded steel casing body 22 is close to the bottom of the foundation pit, use the hoisting mechanism to hook the lifting ring 23 on the surface of the top steel casing body 22 and lift it up, then separate the hook 407 from the steel casing body 22, and finally disconnect the hoisting device and the steel casing body 22 so that it falls into the foundation pit to complete the steel casing lowering operation, and then carry out subsequent operations such as concrete injection.

[0050] When the steel casing body 22 is lowered through the device, the surface of the steel casing body 22 will contact the bearing roller 107 inside the first mounting member 105, and the bearing roller 107 will rotate on the surface of the screw 106 under the action of friction, thereby avoiding direct friction between the steel casing body 22 and the guide frame, and effectively reducing the friction damage to the steel casing body 22 during the lowering process.

[0051] At the same time, when the wheel frame 303 releases the internal steel cable 305, the surface of the steel cable 305 passes through the guide pulley 308 on the inner side of the third mounting member 306. At this time, the guide pulley 308 will rotate under the action of friction, which effectively avoids the steel cable 305 from contacting the surface of the guide frame and causing damage. This not only improves the service life of the steel cable 305, but also guides it to avoid being blocked by the longitudinal guide frame below, ensuring that the steel casing body 22 is stably lowered. The structure is simple, and the use effect of the device is effectively improved.

[0052] When the steel casing body 22 is lowered to near the bottom of the foundation pit and the lifting ring 23 is locked using a lifting device and is in a suspended state, the drive motor 506 is started to cooperate with other linkage structures to allow the hook 407 to continue to move downward. At this time, under the weight of the hook assembly 4, the entire hook assembly 4 will continue to move downward. When the hook 407 is detached from the bottom of the steel casing body 22, the spring 408 on the support plate 403 will generate thrust and push the bend at the tail of the hook 407. At this time, the hook 407 will rotate with the rotating pin 406 as the center. At this time, the hook end of the hook 407 will retract between the inside of the first rectangular plate 401 and the second rectangular plate 404. Subsequently, the drive motor 506 is started to rotate in the opposite direction to retract the hook assembly 4 to above the ground. During the process, no foreign objects will be hooked to cause the device to be stuck or damaged, further ensuring the reliability of the use of this device.

[0053] The wiring diagram of the drive motor 506 in the present invention is common knowledge in the art, and its working principle is a known technology. The model is selected according to actual use, so the control method and wiring layout of the drive motor 506 will not be explained in detail.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inclined pile guide frame and a steel casing based on the inclined pile guide frame, characterized in that: include: A steel casing body (22) and a guide frame assembly (1) for guiding the steel casing body (22), wherein the top of the guide frame assembly (1) is provided with a lowering assembly (3) near four corners, and the bottom of the lowering assembly (3) is provided with a hook assembly (4), and the lowering assembly (3) and the hook assembly (4) cooperate to accurately control the depth below the steel casing body (22), and the top of the guide frame assembly (1) is provided with a linkage assembly (5) for driving the four lowering assemblies (3); The lowering assembly (3) comprises two second mounting members (301), a first rotating shaft (302) is rotatably connected between the outer surfaces of the two second mounting members (301), a wheel frame (303) is installed near the middle between the outer surfaces of the first rotating shafts (302), and a steel cable (305) is wound around the outer surface of the wheel frame (303); The hook assembly (4) comprises a first rectangular plate (401) and a second rectangular plate (404); support sleeves (402) are welded to the outer surface of one side of the first rectangular plate (401) near three corners; bolts (405) are installed to the outer surface of one side of the second rectangular plate (404) near three corners; the ends of the bolts (405) penetrate the outer surface of the second rectangular plate (404) and are threadedly connected to the support sleeves (402); a rotating pin (406) is rotatably connected between the outer surfaces of the first rectangular plate (401) and the second rectangular plate (404) at a position away from the three support sleeves (402); and a hook (407) is rotatably connected to the outer surface of the rotating pin (406) near the middle.

2. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 1, characterized in that: The guide frame assembly (1) comprises two long beams (101), the two long beams (101) are arranged in parallel and two parallel first short beams (102) are welded near the middle between the outer surfaces, two extension beams (103) are welded and fixed to the outer surfaces of the two long beams (101) on the opposite sides, and a connecting beam (104) is welded and fixed between the outer surfaces of adjacent extension beams (103), and the extension beams (103) and the first short beams (102) are located on the same straight line.

3. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 2, characterized in that: Four longitudinal beams (2) are fixedly connected to the bottom of the two long beams (101), and the intersection of the four longitudinal beams (2) and the long beam (101) and the first short beam (102) corresponds to each other. A plurality of second short beams (21) are welded and fixed at equal intervals between the outer surfaces of adjacent longitudinal beams (2). The long beam (101), the first short beam (102), the longitudinal beam (2) and the second short beam (21) cooperate to form a steel casing guide frame. The number of the steel casing bodies (22) is set to be multiple and a lifting ring (23) is symmetrically welded on the outer surface of the uppermost steel casing body (22) near the top.

4. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 3 are characterized by: The bottom of the lowest steel casing body (22) among the plurality of steel casing bodies (22) is connected to the hook (407) in a hook-and-hook manner, and an end of the hook (407) close to the steel casing body (22) is provided with an inclined surface (409), the second mounting member (301) is fixedly connected to the top of the long beam (101) and the first short beam (102), both ends of the first rotating shaft (302) are fixedly connected to the first bevel gear (304), a connecting plate (410) is fixedly installed between the top of the first rectangular plate (401) and the second rectangular plate (404), and the bottom end of the steel cable (305) is fixedly connected to the top of the connecting plate (410).

5. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 4, characterized in that: The linkage components (5) are provided in four numbers, and one of the linkage components (5) is additionally equipped with a driving motor (506), a driving gear (505) and a transmission gear (504). The linkage component (5) comprises two fourth mounting members (501), a third rotating shaft (502) is rotatably connected between the outer surfaces of the two fourth mounting members (501), second bevel gears (503) are symmetrically fixedly mounted on the outer surface of the third rotating shaft (502) near both ends, and the second bevel gear (503) is meshingly connected with the first bevel gear (304).

6. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 5, characterized in that: The fourth mounting member (501) is welded and fixed on the top of the long beam (101) and the extension beam (103), the driving motor (506) is welded and fixed on the top of one of the connecting beams (104), the driving gear (505) is fixedly mounted on the output end of the driving motor (506), the transmission gear (504) is fixedly mounted on the outer surface of one of the third rotating shafts (502) near the middle position, and the driving gear (505) and the transmission gear (504) are meshed and connected.

7. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 6, characterized in that: The hook (407) is located at one end away from the steel casing body (22) and is bent outward. A support plate (403) is welded between the outer surfaces of the first rectangular plate (401) and the second rectangular plate (404) at a position close to the outer side, and the support plate (403) and the bending part of the hook (407) are parallel. A spring (408) is welded between the support plate (403) and the outer surface of the hook (407), and the spring (408) is used to push the inner end of the hook (407) outward.

8. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 7, characterized in that: Two first mounting members (105) are fixedly connected to the top of each of the long beam (101) and the first short beam (102) near the middle position, and multiple groups of screw rods (106) are fixedly installed between the outer surfaces of the two first mounting members (105). Two bearing rollers (107) are symmetrically installed on the outer surfaces of the screw rods (106) near the middle position. The steel casing body (22) passes downward from the position between the long beam (101) and the first short beam (102), and the outer surface thereof is in contact with the outer surface of the bearing roller (107).

9. The inclined pile guide frame and the steel casing based on the inclined pile guide frame according to claim 8, characterized in that: A third mounting member (306) is welded and fixed to the inner outer surface of the second mounting member (301), and a second rotating shaft (307) is rotatably connected between the outer surfaces of adjacent third mounting members (306). A guide pulley (308) is sleeved on the outer surface of the second rotating shaft (307), and the outer surface of the steel cable (305) passes through the wheel groove of the guide pulley (308).

10. An inclined pile guide frame and a method for lowering a steel casing based on the inclined pile guide frame, characterized in that: The method of using the inclined pile guide frame and the steel casing based on the inclined pile guide frame as described in claim 9 comprises the following steps: S1. When lowering the steel casing body (22), first weld the long beam (101) and the first short beam (102) to form a rectangular lowering opening in the middle, then weld four longitudinal beams (2) that match the depth of the foundation pit through the second short beam (21) to form a longitudinal part of the guide frame, then put it into the foundation pit and expose its top on the ground, then weld the long beam (101) and the first short beam (102) to the top of the longitudinal part of the guide frame to form a steel casing inclined pile guide frame body, then weld the lowering component (3) and the linkage component (5) to the top of the guide frame component and adjust them; S2, then use a small lifting device to lift a steel casing body (22) with a segmented length of 1m, a wall thickness of 20mm, and an outer diameter of 2m, and then lower it from the rectangular opening between the long beam (101) and the first short beam (102). During the lowering process, the hook (407) in the matching hook assembly (4) in the lowering assembly (3) is hooked on the bottom of the steel casing. At this time, four equidistantly distributed hooks (407) hook the steel casing to support it. Then, use a small lifting device to lift and adjust another steel casing body (22) according to the above steps; S3, then start the driving motor (506) to drive the driving gear (505) to rotate. After the driving gear (505) rotates, it transmits the rotational force through the transmission gear (504) and drives the third rotating shaft (502) to rotate. After the third rotating shaft (502) rotates, the two second bevel gears (503) on its surface will drive the corresponding first bevel gear (304) to rotate. After the first bevel gear (304) rotates, it will drive the first bevel gear (304) on the other side to rotate synchronously through the first rotating shaft (302). During the rotation of the first rotating shaft (302), the wheel frame (303) on its surface will rotate synchronously. At this time, the steel cable (305) on the surface of the wheel frame (303) will be continuously released, and the bottom hook (407) is hooked on the steel casing body (22). Under the action of gravity, the steel cable (305) is in a straight state. Through this step, the segmented steel casing body (22) can be lowered to a depth slightly above the ground at the top; S4, then align the bottom of the steel casing body (22) hoisted from above with the top of the steel casing body (22) being lowered, and then use a welding machine to weld the two into a whole, and then follow the above steps to sequentially lower and weld the multiple segmented steel casing bodies (22) so that they can be dropped into the foundation pit after forming a whole. When the welded steel casing body (22) is close to the bottom of the foundation pit, use a hoisting mechanism to hook the lifting ring (23) on the surface of the topmost steel casing body (22) and lift it up, and then separate the hook (407) and the steel casing body (22), and finally disconnect the hoisting device and the steel casing body (22) so that it falls into the foundation pit to complete the steel casing lowering operation, and then subsequent operations such as concrete injection can be carried out.

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