An inclined pile guide frame and a steel casing lowering method based on the inclined pile guide frame

Abstract

The present invention discloses an inclined pile guide frame and a steel casing based on the inclined pile guide frame, which relate to the technical field of building construction, and include: a steel casing body and a guide frame assembly for guiding the steel casing body; the present invention forms an inclined pile guide frame for the lower steel casing by welding the guide frame assembly, the longitudinal beam and the second short beam; in the process of lowering the steel casing, the four lowering assemblies are controlled to run synchronously by the linkage assembly, 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, not only the demand for lifting equipment is reduced, but also the adjustment is simple and the safety is high, while the cost and difficulty of transportation and other links are reduced, and it has high economic value.

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 bored piles during the process of manual bored pile construction. Due to the instability of the soil, it is difficult to construct reinforced concrete retaining walls. Therefore, steel retaining walls are used to protect the bored piles to prevent the holes from collapsing and to 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 lowering of the steel casing. 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 lowering the steel casing, the segmented steel casing needs to be welded into a whole according to the depth of the foundation pit, and then it is hoisted 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. During the lowering process, not only large lifting equipment is required, 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 problems. Summary of the Invention

[0005] The purpose 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 expensive to lower from the inside of the guide frame after being hoisted using 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 provided at the top of the guide frame assembly near the four corners, a hook assembly is provided 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, positions around the top of the guide frame assembly are provided with linkage assemblies for driving the four lowering assemblies, the lowering assembly includes two second mounting members, and the outer surfaces of the two second mounting members are rotatably connected with a 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 wrapped around 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 includes 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. 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 beam and the first short beam correspond to each other. A plurality of second short beams are welded and fixed at equal distances between the outer surfaces of adjacent longitudinal beams. The long beam, the first short beam, the longitudinal beam and the second short beam cooperate to form a steel casing guide frame. The number of the steel casing bodies is set to multiple and a lifting ring is 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 hooked and connected with the hook, and the hook is provided with an inclined surface at one end close to the steel casing body, 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, there are four linkage components 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 a second bevel gear near both ends, and the second bevel gear is meshed with 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, and 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 meshed and 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 outer side, and the support plate and the bent 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 surface of the bearing rollers.

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

[0015] A method for lowering a steel casing using a slanted pile guide frame and the slanted pile guide frame comprises 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 that match the depth of the foundation pit through the second short beam to form the longitudinal part of the guide frame. Then, lower it into the foundation pit with its top exposed 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 linkage assembly to the top of the guide frame assembly and adjust it.

[0017] S2. Then, a segmented steel casing body with a length of 1m, a wall thickness of 20mm, and an outer diameter of 2m is hoisted using a small hoisting device and lowered from the rectangular opening between the long beam and the first short beam. During the lowering process, the hooks in the matching hook assembly in the lowering assembly are hooked on the bottom of the steel casing. At this time, four equidistantly distributed hooks hook the steel casing to support it. Then, a small hoisting device is used to hoist and adjust another 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 transmits the rotational force through the transmission gear and drives the third rotating shaft to rotate. After the third rotating shaft rotates, the two second bevel gears on its surface drive the corresponding first bevel gear to rotate. After the first bevel gear rotates, it drives the first bevel gear on the other side to rotate synchronously through the first rotating shaft. 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 hook at the bottom end will be hooked on the steel casing body. Under the action of gravity, the steel cable is in a straight state. Through this step, the segmented steel casing body can be lowered to a depth slightly above the ground at the top;

[0019] S4. Then align the bottom of the steel casing body hoisted above with the top of the lowered steel casing body, 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 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 uppermost 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. During the lowering of the steel casing, the four lowering assemblies are controlled by the linkage assembly to operate synchronously, and the lowering assembly cooperates with the hook assembly to accurately control the lowering speed and depth of the segmented steel casing body. During 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 entire steel casing, this method 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.

[0022] 2. When the steel casing body is lowered through this 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 in use, when the wheel frame releases the internal steel cable, the surface of the steel cable passes through the guide pulley on the inner side of the third mounting piece. At this time, the guide pulley will rotate under the action of friction, effectively avoiding damage caused by contact between the steel cable and the guide frame surface. This not only improves the service life of the steel cable, but also plays a role in guiding it, avoiding being blocked by the longitudinal guide frame below, ensuring the stable lowering of the steel casing body. The structure is simple and effectively improves the use effect of the device.

[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 action of 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 of the circle. At this time, the hook end of the hook will retract between the inside of the first rectangular plate and the second rectangular plate. Then, the drive motor is started to rotate in the opposite direction to reel the hook assembly above the ground. During the process, no foreign objects will be hooked to cause the device to get stuck or damaged, 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 according to 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 This is a schematic diagram of the 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 A schematic diagram of the structure of a steel casing body of a slanted pile guide frame and a steel casing based on the slanted pile guide frame according to the present invention;

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

[0031] Figure 7 This 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 This is a partial structural schematic diagram of an inclined pile guide frame and a steel casing based on the inclined pile guide frame according to the present invention;

[0033] Figure 9 This 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] Figure 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 picture:

[0036] 1. Guide frame assembly; 101. Long beam; 102. First short beam; 103. Extension beam; 104. Connecting beam; 105. First mounting member; 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 member; 302. First rotating shaft; 303. Wheel frame; 304. First bevel gear; 305. Steel cable; 306. Third mounting member; 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 part; 502, third rotating shaft; 503, second bevel gear; 504, transmission gear; 505, drive gear; 506, drive motor. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Reference Figures 1-10As 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 provided at the top of the guide frame assembly 1 near the four corners, a hook assembly 4 is provided 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 provided at the top and around the guide frame assembly 1, 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 around 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 on the outer surface of one side of the second rectangular plate 404 near three corners. The ends of the bolts 405 pass through 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.

[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. After the long beams 101 and the first short beams 102 are welded, a rectangular lowering opening is formed in the middle, which plays a role in guiding the steel casing body 22 during the lowering process. After the extension beams 103 and the connecting beams 104 are welded to each other, they are welded and fixed to the long beams 101 again to form a bracket for installing other structural components.

[0040] like Figures 1-6As shown, 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 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 after being welded and fixed with the long beam 101 and the first short beam 102, a complete inclined pile guide frame is formed, which is used to guide the steel casing when it is lowered. The steel casing moves downward inside the guide frame, so it can be used in foundation pits in slightly inclined and vertical states. 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 outer 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 Figures 1-10 As shown, the bottom of the lowest steel casing body 22 among the multiple steel casing bodies 22 is connected to the hook 407 to form a hook connection, and the hook 407 is provided with an inclined surface 409 at one end close to the steel casing body 22. 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. The bottom end of the steel cable 305 and the top of the connecting plate 410 are fixedly connected. Fixed connection, when the four hooks 407 hook the steel casing, the depth and speed of the lowering of the steel casing body 22 can be manually controlled, so that it can be welded while being lowered. 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 drive motor 506, a drive gear 505 and a transmission gear 504. The linkage component 5 includes two fourth mounting members 501. The outer surfaces of the two fourth mounting members 501 are rotatably connected with a third rotating shaft 502. The outer surface of the third rotating shaft 502 is symmetrically fixed with a second bevel gear 503 near both ends. The second bevel gear 503 is meshed 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 drive motor 506 is welded and fixed to one of the connecting beams. 104, the driving gear 505 is fixedly mounted on the output end of the driving motor 506, and the 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 cable 305.

[0043] like Figure 1-Figure 3 、 Figure 8 and Figure 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 bending parts of the support plate 403 and the ends of the hook 407 are parallel. 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. The support plate 403 and the bending parts of the tail ends of the hook 407 cooperate to connect the spring 408. By designing the tail 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 to the top of each long beam 101 and the first short beam 102 near the middle position, 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 under the action of friction, the bearing roller 107 will rotate on the surface of the screw 106, 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 Figure 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, and 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 inside the third mounting member 306. At this time, the guide pulley 308 will rotate under the action of friction, effectively avoiding damage to the steel cable 305 and the guide frame surface from contacting. This not only improves the service life of the steel cable 305, but also plays a role in guiding it, avoiding being blocked by the longitudinal guide frame below, ensuring the stable lowering of the steel casing body 22, and having a simple structure, which effectively improves the use effect of the device.

[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] Afterwards, the steel casing body 22 with a segmented length of 1m, a wall thickness of 20mm, and an outer diameter of 2m is hoisted using 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 and play a supporting role thereon. Subsequently, the other steel casing body 22 is hoisted and adjusted according to the above steps using a small hoisting device.

[0048] After the first bevel gear 304 is rotated, the first bevel gear 304 on the other side is driven by the first rotating shaft 302 to rotate synchronously. During the rotation of the first rotating shaft 302, the wheel frame 303 on the surface of the wheel frame 303 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 end hook 407 will be hooked to 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.

[0049] Then align the bottom of the steel casing body 22 hoisted above with the top of the lowered steel casing body 22, 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 to form a whole and drop it into the foundation pit. When the welded steel casing body 22 is close to the bottom of the foundation pit, use the lifting mechanism to hook the lifting ring 23 on the surface of the top steel casing body 22 and lift it, then separate the hook 407 and the steel casing body 22, and finally disconnect the lifting 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 concrete injection and other operations.

[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 inside the third mounting member 306. At this time, the guide pulley 308 will rotate under the action of friction, effectively avoiding damage caused by contact between the steel cable 305 and the guide frame surface, which not only improves the service life of the steel cable 305, but also plays a role in guiding it, avoiding being blocked by the longitudinal guide frame below, ensuring the stable lowering of the steel casing body 22, and having a simple structure, which effectively improves the use effect of the device.

[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 the lifting device and is in a suspended state, the driving 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 action of 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 of the circle. 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. Then the driving 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 field, and its working principle is a well-known technology. The model is selected according to actual use, so the control method and wiring layout of the drive motor 506 are no longer 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 scope of protection of the present invention.

Claims

1. A tilted 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 lowering assemblies (3) near the 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 lowering depth of the steel casing body (22), and linkage assemblies (5) for driving the four lowering assemblies (3) are provided at positions around the top of the guide frame assembly (1); 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 mounted near the middle of 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), wherein support sleeves (402) are welded to the outer surface of one side of the first rectangular plate (401) at positions near three corners thereof, and bolts (405) are installed to the outer surface of one side of the second rectangular plate (404) at positions near three corners thereof, wherein the ends of the bolts (405) pass through the outer surface of the second rectangular plate (404) and are threadedly connected to the support sleeves (402), and 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) at a position near the middle thereof; The hook (407) is located at an end away from the steel casing body (22) and is bent outwardly. 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 bent end 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. The hook (407) in the matching hook assembly (4) in the lowering assembly (3) is hooked on the bottom of the steel casing.

2. 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 of the outer surfaces of the two long beams (101), 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 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 positions 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 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 near the top of the outer surface of the uppermost steel casing body (22).

4. The inclined pile guide frame according to claim 3, characterized in that: 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-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 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) being rotatably connected between the outer surfaces of the two fourth mounting members (501), second bevel gears (503) being 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 to the first bevel gear (304).

6. The inclined pile guide frame according to claim 5, characterized in that: 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 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; the driving gear (505) and the transmission gear (504) are meshed and connected.

7. The inclined pile guide frame according to claim 6, 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 rollers (107).

8. The inclined pile guide frame according to claim 7, 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).

9. A method for lowering a steel casing based on an inclined pile guide frame, characterized in that: The inclined pile guide frame according to claim 8 is used, comprising 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 the 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, a steel casing body (22) with a segmented length of 1 m, a wall thickness of 20 mm, and an outer diameter of 2 m is hoisted using 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 equally spaced hooks (407) hook the steel casing and play a supporting role thereon. Then, the small hoisting device is used to hoist 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, and 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 to 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 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 form a whole and then fall into the foundation pit. 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, 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 the subsequent concrete injection operation can be carried out.

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