A vertical pipe body hoisting system

Abstract

The application discloses a vertical pipe body hoisting system, relates to the technical field of building pipe body welding, and comprises a crane, an inner load mechanism, a top supporting mechanism and a bottom supporting piece. The crane is provided with a transverse moving pair and a longitudinal moving pair, and the crane is provided with a hoisting cable. The inner load mechanism comprises at least two inner carriers, all the inner carriers are vertically and linearly connected to form the inner load mechanism, the top end of the inner load mechanism is detachably connected with the free end of the hoisting cable, the inner load mechanism is arranged in a to-be-hoisted pipe body, and the length of the inner load mechanism is longer than that of the to-be-hoisted pipe body. The top supporting mechanism comprises a plurality of top supporting cylinders, the top supporting cylinders are in one-to-one correspondence with the inner carriers, are sleeved outside the corresponding inner carriers, and can expand outward along the radial direction to extrude the inner wall of the to-be-hoisted pipe body. The bottom supporting piece is detachably connected with the bottom end of the inner load mechanism, and the size of the bottom supporting piece is greater than the inner diameter of the to-be-hoisted pipe body. The vertical state of the to-be-welded pipe body cannot be effectively ensured and the to-be-welded pipe body cannot be effectively centered with the upper pipe body during sectional welding of the pipe.

Description

Technical Field

[0001] This invention relates to the field of building pipe welding technology, specifically to a vertical pipe hoisting system. Background Technology

[0002] In the design of water supply and drainage, heating, ventilation and air conditioning and process piping for industrial and civil building projects, in order to minimize the occupation of the main space of the building, vertical pipes leading to the upper floors are usually installed in the corners of the walls or in pipe shafts. They are extremely long and generally have large diameters, so they are usually connected and assembled by segmented welding.

[0003] When welding in sections, the uppermost section of the pipe must first be fixed and set vertically. Then, a crane is used to lift the pipe sections to be welded one by one. Welding is carried out after the sections are aligned with the upper pipe sections until the entire pipe is welded.

[0004] When implementing the above construction method, the following problems are common: (1) During hoisting, the hoisting cable cannot be effectively fixed to the pipe to be welded. If the welding lug is used, it will not only affect the subsequent welding operation of the pipe, but also cannot ensure that the pipe to be welded is in a vertical state; (2) During the hoisting process, the pipe to be welded will inevitably tilt, making it difficult to align with the pipe above; (3) During the hoisting process, the pipe to be welded is prone to shaking due to various reasons, making it difficult to align with the pipe above; (4) When aligning with the pipe above, it relies entirely on manual judgment and adjustment, and the coaxiality is generally not ideal, resulting in segmental docking errors, which leads to a generally large coaxiality error of the entire pipe after welding.

[0005] Therefore, this application is hereby submitted. Summary of the Invention

[0006] The purpose of this invention is to provide a vertical pipe hoisting system to solve the problem that when welding pipe sections, the pipe to be welded cannot be effectively kept vertical and cannot be effectively aligned with the pipe above.

[0007] This invention is achieved through the following technical solution:

[0008] A vertical pipe hoisting system includes: a crane, the crane having a lateral sliding joint and a longitudinal sliding joint, the lateral sliding joint and the longitudinal sliding joint being perpendicular to each other and both horizontally arranged, the crane having a hoisting cable; an inner carrying mechanism, the inner carrying mechanism including at least two inner carriers, all of the inner carriers being vertically connected to form the inner carrying mechanism, the top end of the inner carrying mechanism being detachably connected to the free end of the hoisting cable, the inner carrying mechanism being used to pass through the pipe to be hoisted, the length of the inner carrying mechanism being longer than the pipe to be hoisted; a top support mechanism, the top support mechanism including multiple top support cylinders, the top support cylinders corresponding one-to-one with the inner carriers and fitted onto the corresponding inner carriers, the top support cylinders being able to expand radially outward to compress the inner wall of the pipe to be hoisted; and a bottom support member, the bottom support member being detachably connected to the bottom end of the inner carrying mechanism, the size of the bottom support member being larger than the inner diameter of the pipe to be hoisted.

[0009] In another preferred embodiment, the inner carrier is cylindrical, and the diameter of the inner carrier is smaller than the inner diameter of the pipe to be hoisted. All the inner carriers are coaxially spaced and connected. The top support cylinder is coaxially sleeved on the corresponding inner carrier, and the outer wall of the top support cylinder is covered with an elastic friction layer.

[0010] In another preferred embodiment, a telescopic column is coaxially provided at one end of the inner carrier, and the telescopic column moves axially; the top support cylinder includes multiple top support plates, all of which are arranged in a ring around the inner carrier to form the top support cylinder; the inner walls of the top support plates are respectively hinged with positioning rods and support rods, the end of the positioning rod away from the top support plate is hinged to the side wall of the inner carrier, and the end of the support rod away from the top support plate is hinged to the side wall of the telescopic column; the axis of the inner carrier is located in the plane where the positioning rod and the support rod corresponding to each top support plate are located; the elastic friction layer is laid on the outer wall of the top support plate.

[0011] In another preferred embodiment, the telescopic column is coaxially slidably fitted with a slip ring, the inner wall of the top support plate is hinged with a limit rod, the end of the limit rod away from the top support plate is hinged with the slip ring, and the limit rod is coplanar with the corresponding positioning rod and the support rod.

[0012] In another preferred embodiment, a hydraulic cylinder is provided at the end of the inner carrier away from the telescopic column. The hydraulic cylinder is cylindrical and coaxially connected to the inner carrier. The diameter of the hydraulic cylinder is smaller than the minimum inner diameter of the top support cylinder. The hydraulic cylinder is drivenly connected to the telescopic column to enable the telescopic column to extend and retract axially.

[0013] In another preferred embodiment, a suspension rod is coaxially and continuously provided on the inner carrier, with each end of the suspension rod passing through the corresponding telescopic column and the hydraulic cylinder, respectively; both ends of the suspension rod are threaded externally and detachably screwed with lifting rings; a connecting cable is provided between the lifting rings on the corresponding sides of the two suspension rods of two adjacent inner carriers, with each end of the connecting cable detachably hooked to the two lifting rings via two hooks; the end of the suspension rod closest to the bottom support member passes through the bottom support member and is screwed with a locking end; the lifting ring furthest from the bottom support member is detachably hooked to the suspension cable via a hook.

[0014] In another preferred embodiment, the boom is coaxially fixedly connected to a first connecting plate, and the end of the telescopic column away from the inner carrier is coaxially fixedly connected to a second connecting plate. The first connecting plate and the second connecting plate are fixedly connected by bolts. The boom is coaxially slidably engaged with the inner carrier and the hydraulic cylinder. A limit nut is screwed onto the end of the boom that is slidably engaged with the hydraulic cylinder. When the top support cylinder is retracted to its minimum size, the hydraulic cylinder abuts against the limit nut.

[0015] In another preferred embodiment, the inner carrier mechanism includes two inner carriers; the other end of the boom connected to the lifting cable is coaxially threaded with a guide cap, the guide cap being conical, the tip of the guide cap being away from the corresponding inner carrier, and the maximum diameter of the guide cap being slightly larger than the diameter of the top support cylinder and the diameter of the hydraulic cylinder; the lifting ring screwed to the end of the boom connected to the guide cap is located inside the guide cap, and the tip of the guide cap has a coaxial through hole so that the connecting cable and the hook can pass through the guide cap; the bottom support is conical, and the tip of the bottom support abuts against the locking end.

[0016] In another preferred embodiment, a guide cover is coaxially and detachably provided at one end of the inner carrier near the hoisting cable and away from the other inner carrier. The guide cover includes a cylindrical portion, a conical portion, and a cylindrical portion coaxially connected in sequence. The inner diameter of the cylindrical portion is adapted to the outer diameter of the pipe to be hoisted, and the inner diameter of the cylindrical portion is matched with the diameter of the hoisting cable. A cover groove is formed on the side wall of the guide cover along the generatrix. The cover groove extends through the guide cover along the length direction and through the guide cover along the thickness direction. The width of the cover groove is matched with the diameter of the hoisting cable. The guide cover is coaxially sleeved with the hoisting cable through the cover groove. When sleeved, the cylindrical portion or the cylindrical portion faces the corresponding inner carrier. When the cylindrical portion faces the corresponding inner carrier, the cylindrical portion is coaxially covered outside the top support cylinder. A hollow ball-head locating pin is coaxially fitted onto the hoisting cable. The hollow ball-head locating pin is used for axial positioning of the guide cover.

[0017] In another preferred embodiment, the crane is provided with a gantry frame and a winch. The gantry frame is slidably engaged with the external environment via a transverse slide rail, which is horizontally set and fixedly connected to the external environment. The gantry frame is provided with a longitudinal slide rail, which is horizontally set and perpendicular to the transverse slide rail. The winch is slidably connected to the longitudinal slide rail, and the hoisting cable is connected to the winch.

[0018] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art:

[0019] This invention discloses a vertical pipe hoisting system. By setting up a crane and a hoisting cable, the crane drives the hoisting cable to rise and fall, providing a basic lifting and lowering mechanism. Based on this, by setting up lateral and longitudinal sliding joints, the landing point of the hoisting cable can be adjusted horizontally, thus initially aligning it with the desired installation position of the pipe. An internal load mechanism is provided, consisting of at least two internal carriers vertically connected to form a strip structure, allowing it to be vertically inserted into the pipe to be hoisted, with its length exceeding that of the pipe and its upper part extending out of the pipe. A top support mechanism is also provided, comprising… Multiple support cylinders are used, with one coaxially fitted around the outside of each inner carrier. These support cylinders are designed to expand radially outwards. When the inner carrier mechanism is placed inside the pipe to be lifted, the support mechanisms expand radially and uniformly outwards, pressing against the inner wall of the pipe. This ensures the inner carrier mechanism, support mechanisms, and the pipe to be lifted are coaxially aligned. Due to the pressure and large-area contact between the support cylinders and the inner wall of the pipe, significant friction is generated, initially limiting the axis of the pipe to be lifted within the vertical pipe lifting system. Based on this, a bottom support component is provided, detachably connected to the end of the inner carrier mechanism furthest from the lifting cable. In use, first position the vertical pipe hoisting system from below to above the pipe to be hoisted. Then, disassemble the bottom support component, insert the inner load mechanism into the pipe to be hoisted, causing the top support mechanism to expand outwards. Finally, reinstall the bottom support component. This provides axial support and limitation from the bottom end of the pipe to be hoisted, combined with the aforementioned frictional limiting, ensuring the pipe to be hoisted is completely connected to the vertical pipe hoisting system. At this point, the entire system is vertically aligned, effectively preventing tilting. During hoisting, the pipe to be hoisted will not sway due to the action of the top support mechanism and the bottom support component. When approaching the upper pipe, the top support component retracts outside the pipe to be hoisted. The upper part of the inner supporting mechanism is inserted into the upper pipe body until the pipe to be lifted is close enough to be welded. Then, the previously retracted top support cylinder is fully extended, which allows the pipe to be lifted to be quickly and effectively aligned with the upper pipe body. Welding can then be carried out. After welding is completed, the top support cylinder is retracted, and then the vertical pipe lifting system is lowered again to fix and lift the next section of pipe to be lifted. Through the cooperation of the above features, the vertical pipe lifting system can effectively solve the problem that the pipe to be welded cannot be effectively kept vertical and cannot be effectively aligned with the upper pipe body when welding pipe sections. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 A schematic diagram of the internal load mechanism and top support mechanism of a vertical pipe hoisting system provided by the present invention;

[0022] Figure 2 A schematic diagram of the uppermost part of a vertical pipe hoisting system provided by the present invention;

[0023] Figure 3 An exploded view of the uppermost part of a vertical pipe hoisting system provided by the present invention;

[0024] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0025] Figure 5 A schematic diagram of a guide cap for a vertical pipe hoisting system provided by the present invention;

[0026] Figure 6 A schematic diagram of the lowest part of a vertical pipe hoisting system provided by the present invention;

[0027] Figure 7 An exploded view of the lowest part of a vertical pipe hoisting system provided by the present invention;

[0028] Figure 8 A bottom view of the bottom support component of a vertical pipe hoisting system provided by the present invention;

[0029] Figure 9 A schematic diagram of a vertical pipe hoisting system in the hoisting state provided by the present invention;

[0030] Figure 10 A schematic diagram of a vertical pipe hoisting system in the lowering state, provided by the present invention;

[0031] Figure 11 A schematic diagram illustrating the pipe docking process of a vertical pipe hoisting system provided by the present invention;

[0032] Figure 12 A schematic diagram of a crane for a vertical pipe hoisting system provided by the present invention;

[0033] Figure 13 This is a schematic diagram of a vertical pipe hoisting system during construction, provided by the present invention.

[0034] The attached diagram shows the markings and corresponding component names:

[0035] 1-Cycling machine; 2-Lifting cable; 3-Gantry frame; 4-Transverse slide rail; 5-Longitudinal slide rail; 6-Wind; 10-Inner carrier; 101-Telescopic column; 102-Hydraulic cylinder; 103-Slip ring; 104-Second connecting plate; 11-Top support cylinder; 111-Elastic friction layer; 12-Top support plate; 13-Positioning rod; 14-Support rod; 15-Limiting rod; 16-Lifting rod; 161-Lifting ring; 162-Connecting cable; 163-Locking end; 164-First connecting plate; 165-Limiting nut; 17-Guide cap; 20-Bottom support; 21-Guide cover; 211-Cylindrical part; 212-Conical part; 213-Circular tube part; 214-Cover groove; 22-Ball head hollow positioning pin. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.

[0038] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane". Example

[0039] Please refer to Figures 1 to 13As shown, this embodiment provides a vertical pipe hoisting system, including: a crane 1, which has a lateral sliding joint and a longitudinal sliding joint, the lateral sliding joint and the longitudinal sliding joint being perpendicular to each other and both horizontally arranged, and the crane 1 having a hoisting cable 2; and a second component including an inner carrying mechanism, the inner carrying mechanism including at least two inner carriers 10, all of which are vertically connected to form the inner carrying mechanism, the top end of the inner carrying mechanism being detachably connected to the free end of the hoisting cable, and the inner carrying mechanism being used for threading... The inner support mechanism is longer than the pipe body to be lifted. The third part includes a top support mechanism, which includes multiple top support cylinders 11. Each top support cylinder 11 corresponds to one of the inner carriers 10 and is fitted onto the corresponding inner carrier 10. The top support cylinder 11 can expand radially outward to compress the inner wall of the pipe body to be lifted. The fourth part includes a bottom support member 20, which is detachably connected to the bottom end of the inner support mechanism. The size of the bottom support member 20 is larger than the inner diameter of the pipe body to be lifted.

[0040] The vertical pipe hoisting system disclosed in this embodiment uses a crane 1 and a hoisting cable 2. The crane 1 drives the hoisting cable 2 to lift and lower, providing a basic lifting and lowering mechanism. Based on this, by setting lateral and longitudinal sliding joints, the landing point of the hoisting cable 2 can be adjusted horizontally, thus initially aligning it with the desired installation position of the pipe. An internal load mechanism, consisting of at least two vertically connected internal carriers 10 forming a strip structure, is installed vertically inside the pipe to be hoisted, with its length exceeding that of the pipe and its upper part extending out of the pipe. A top support mechanism, comprising multiple... A top support cylinder 11 is coaxially fitted around each inner carrier 10. The top support cylinder 11 is designed to expand radially outwards. When the inner carrier mechanism is placed inside the pipe to be lifted, the top support mechanism expands radially and uniformly outwards, pressing against the inner wall of the pipe. This ensures that the inner carrier mechanism, the top support mechanism, and the pipe to be lifted are coaxially aligned. Due to the pressure and large-area contact between the top support cylinder 11 and the inner wall of the pipe, significant friction is generated, initially limiting the axis of the pipe to be lifted within the vertical pipe lifting system. Based on this, a bottom support component 20 is provided, which is detachably connected to the inner carrier mechanism away from the lifting cable 2. In operation, the vertical pipe hoisting system is first positioned below the pipe to be hoisted and above it. Then, the bottom support 20 is disassembled, and the inner load mechanism is inserted into the pipe to be hoisted, causing the top support mechanism to expand outwards. Finally, the bottom support 20 is reinstalled. This provides axial support and limitation from the bottom of the pipe to be hoisted, combined with the aforementioned frictional limiting, ensuring the pipe to be hoisted is completely connected to the vertical pipe hoisting system. At this point, the entire system is vertically aligned, effectively preventing tilting. Furthermore, during hoisting, the pipe to be hoisted will not sway due to the action of the top support mechanism and the bottom support 20. When approaching the upper pipe, the inner load mechanism retracts from the outer part of the pipe to be hoisted. The top support cylinder 11 is inserted into the upper pipe body until the pipe to be lifted is close to the upper pipe body at a suitable welding distance. Then, the previously retracted top support cylinder 11 is fully raised, which allows the pipe to be lifted to be quickly and effectively aligned with the upper pipe body. Welding can then be carried out. After welding is completed, the top support cylinder 11 is retracted, and then the vertical pipe lifting system is lowered again to fix and lift the next section of pipe to be lifted. Through the cooperation of the above features, the vertical pipe lifting system can effectively solve the problem that the pipe to be welded cannot be effectively kept vertical and cannot be effectively aligned with the upper pipe body when welding pipe sections.

[0041] It should be noted that the aforementioned top support cylinder 11 can adopt any circumferential expansion mechanism in the prior art, such as an annular inflation mechanism, cylinder push plate mechanism, etc., as long as it can expand uniformly outward in the radial direction in the circumferential direction, and always maintain a cylindrical or quasi-cylindrical shape with the same axis during the expansion process, with only the outer diameter gradually increasing.

[0042] To further explain the shape and structure of the inner carrier 10, the inner carrier 10 is cylindrical, and the diameter of the inner carrier 10 is smaller than the inner diameter of the pipe to be hoisted. All the inner carriers 10 are coaxially spaced and connected. The top support cylinder 11 is coaxially sleeved on the corresponding inner carrier 10, and the outer wall of the top support cylinder 11 is covered with an elastic friction layer 111.

[0043] The above-mentioned configuration allows the inner carrier 10 to be better placed into the pipe to be hoisted and to better cooperate with the top support cylinder 11 during installation; the elastic friction layer 111 further enhances the friction during extrusion.

[0044] To further explain the specific structure of the top support cylinder 11, a telescopic column 101 is coaxially provided at one end of the inner carrier 10, and the telescopic column 101 moves axially; the top support cylinder 11 includes multiple top support plates 12, all of which are arranged in a ring around the inner carrier 10 to form the top support cylinder 11; the inner walls of the top support plates 12 are respectively hinged with positioning rods 13 and support rods 14, the end of the positioning rod 13 away from the top support plate 12 is hinged to the side wall of the inner carrier 10, and the end of the support rod 14 away from the top support plate 12 is hinged to the side wall of the telescopic column 101; the axis of the inner carrier 10 is located in the plane where the positioning rod 13 and the support rod 14 corresponding to each top support plate 12 are located; the elastic friction layer 111 is laid on the outer wall of the top support plate 12.

[0045] With the above configuration, the telescopic column 101 extends and retracts, causing one end of the support rod 14, which is hinged to its shaft, to move. While the lengths of the support rod 14 and the positioning rod 13 remain constant, the top support plate 12, which shares a common shaft hinge with both, can be moved inward or outward, with all the top support plates 12 moving synchronously. This changes the outer diameter of the top support cylinder 11 formed by the top support plates 12. When the telescopic column 101 extends away from the inner carrier 10, the angle between the positioning rod 13 and the support rod 14 gradually increases. The top support plate 12 retracts inward until the side walls of adjacent top support plates 12 abut against each other. This is the minimum outer diameter of the top support cylinder 11. At this point, all the top support plates 12 are spliced ​​into a complete cylinder. When the telescopic column 101 retracts in a direction close to the inner carrier 10, the included angle between the positioning rod 13 and the support rod 14 gradually decreases, and the top support plate 12 expands outward. At this point, the outer diameter of the top support cylinder 11 gradually increases, and the top support cylinder 11 gradually expands until the top support plate 12 abuts against and is squeezed against the inner side wall of the pipe to be hoisted.

[0046] It should be noted that the aforementioned telescopic column 101 can be driven by any of the existing technologies, such as hydraulic cylinder drive, pneumatic cylinder drive, electric motor drive, etc., as long as it can extend and retract normally and has sufficient structural support.

[0047] In order to limit the maximum outward expansion of the top support plate 12, the telescopic column 101 is coaxially slidably fitted with a slip ring 103, and the inner wall of the top support plate 12 is hinged with a limiting rod 15. The end of the limiting rod 15 away from the top support plate 12 is hinged with the slip ring 103. The limiting rod 15 is coplanar with the corresponding positioning rod 13 and the support rod 14.

[0048] By setting up a slip ring 103 and a limiting rod 15, when the top support plate 12 is opened, since the length of the limiting rod 15 remains constant, it is also pulled outward by the top support plate 12, thereby applying a pulling force extending along the length direction of the limiting rod 15 to the slip ring 103. This pulling force can be decomposed into a horizontal outward pulling force and a vertical pulling force. The vertical pulling force will pull the slip ring 103 to slide directionally along the telescopic column 101. When the limiting rod 15 rotates to the horizontal, the vertical pulling force component is 0. At this time, the slip ring 103 will no longer slide along the telescopic column 101. This is the maximum outer diameter of the top support cylinder 11. Generally speaking, in actual use, the top support cylinder 11 will not expand to the maximum outer diameter, so the slip ring 103 will not be structurally locked.

[0049] To further explain the specific driving structure of the telescopic column 101, a hydraulic cylinder 102 is provided at one end of the inner carrier 10 away from the telescopic column 101. The hydraulic cylinder 102 is cylindrical and coaxially connected to the inner carrier 10. The diameter of the hydraulic cylinder 102 is smaller than the minimum inner diameter of the top support cylinder 11. The hydraulic cylinder 102 is connected to the telescopic column 101 in a driving connection so that the telescopic column 101 can extend and retract axially.

[0050] It should be noted that the driving structure of the hydraulic cylinder 102 and the telescopic column 101 can be implemented using any of the existing technologies, as long as it can drive the telescopic column 101 to extend and retract.

[0051] To further explain the connection structure between the inner carrier 10 and the suspension cable, and the connection structure between the inner carriers 10, a suspension rod 16 is coaxially and continuously provided on the inner carrier 10. The two ends of the suspension rod 16 are respectively connected to the corresponding telescopic column 101 and the hydraulic cylinder 102. Both ends of the suspension rod 16 are threaded externally and detachably screwed with a lifting ring 161. A connecting cable 162 is provided between the lifting rings 161 on the corresponding sides of the two suspension rods 16 of two adjacent inner carriers 10. The two ends of the connecting cable 162 are detachably hung on the two lifting rings 161 by two hooks. The end of the suspension rod 16 closest to the bottom support 20 is connected to the bottom support 20 and screwed with a locking end 163. The lifting ring 161 furthest from the bottom support 20 is detachably hung on the suspension cable by a hook.

[0052] With the above configuration, the boom 16 is used as the connecting body, and an external thread is opened at its end and a lifting ring 161 is screwed on, so that the lifting cable with the hook can be directly hung on the lifting ring 161 to form a stable and detachable connection. The two adjacent inner carriers 10 are also connected by the boom 16. The booms 16 of the two are connected by the connecting cable 162 with the hook. This connection method makes the tension completely concentrated on the lifting cable, boom 16 and connecting cable 162, so as not to affect the structural performance of the inner carrier 10, nor to affect the support and contraction of the top support cylinder 11.

[0053] To further explain the specific connection structure between the boom 16 and the inner carrier 10, the boom 16 is coaxially fixedly connected to a first connecting plate 164, and the end of the telescopic column 101 away from the inner carrier 10 is coaxially fixedly connected to a second connecting plate 104. The first connecting plate 164 and the second connecting plate 104 are fixedly connected by bolts. The boom 16, the inner carrier 10, and the hydraulic cylinder 102 are coaxially slidably engaged. A limit nut 165 is screwed onto the end of the boom 16 that is slidably engaged with the hydraulic cylinder 102. When the top support cylinder 11 is retracted to its minimum size, the hydraulic cylinder 102 abuts against the limit nut 165.

[0054] By setting the first connecting plate 164 and the second connecting plate 104, the boom 16 is fixedly connected to the telescopic column 101. When the telescopic column 101 extends or retracts, since it is relatively fixed to the boom 16, it will drive the inner carrier 10 and the hydraulic cylinder 102 to slide along the boom 16 in the opposite direction. By setting the limit nut 165, the extreme position of the hydraulic cylinder 102 is limited to prevent the hydraulic cylinder 102 from moving too far away from the telescopic column 101.

[0055] To avoid unnecessary obstruction between the inner carrier 10 and hydraulic cylinder 102 and the floor slab or other external environment during the lowering process, and to prevent the bottom support 20 from obstructing the external environment and causing lowering failure, the inner carrier mechanism includes two inner carriers 10; the other end of the lifting rod 16 connected to the lifting cable is coaxially threaded with a guide cap 17, the guide cap 17 is conical, the tip of the guide cap 17 is away from the corresponding inner carrier 10, and the maximum diameter of the guide cap 17 is slightly larger than the diameter of the top support cylinder 11 and the diameter of the hydraulic cylinder 102; the lifting ring 161 screwed to the end of the lifting rod 16 that is screwed to the guide cap 17 is located inside the guide cap 17, and the tip of the guide cap 17 has a through hole coaxially so that the connecting cable 162 and the hook can pass through the guide cap 17; the bottom support 20 is conical, and the tip of the bottom support 20 abuts against the locking end 163.

[0056] By setting the guide cap 17, a conical structure is formed below the inner carrier 10. When it is lowered, it can be lowered smoothly when it comes into contact with the external environment (mainly the pipe hole wall where the pipe body is installed) and avoids getting stuck. By setting the guide cap 17 to be hollow and the hook is located inside the guide cap 17, it is avoided that the hook will be knocked off during the lowering process.

[0057] To further prevent obstruction from the external environment during lowering and hoisting, a guide cover 21 is coaxially and detachably installed at one end of the inner carrier 10 closest to the hoisting cable and furthest from the other inner carrier 10. The guide cover 21 includes a cylindrical portion 211, a conical portion 212, and a cylindrical portion 213 coaxially connected in sequence. The inner diameter of the cylindrical portion 211 is adapted to the outer diameter of the pipe to be hoisted, and the inner diameter of the cylindrical portion 213 matches the diameter of the hoisting cable. A cover groove 214 is formed on the side wall of the guide cover 21 along the generatrix, and the cover groove 214 extends through the guide cover 214 along its length. A guide cover 21 is provided, and the guide cover 21 extends through the thickness direction. The width of the cover groove 214 matches the diameter of the suspension cable. The guide cover 21 is coaxially sleeved with the suspension cable through the cover groove 214. When sleeved, the cylindrical part 211 or the cylindrical tube part 213 faces the corresponding inner carrier 10. When the cylindrical part 211 faces the corresponding inner carrier 10, the cylindrical part 211 is coaxially covered outside the top support cylinder 11. A hollow ball-head positioning pin 22 is coaxially fitted on the suspension cable. The hollow ball-head positioning pin 22 is used to axially position the guide cover 21.

[0058] Specifically, the inner diameter of the hollow ball-head positioning pin 22 is adapted to the outer diameter of the suspension cable 2, the outer diameter of the hollow ball-head positioning pin 22 is adapted to the inner diameter of the circular tube 213, the width of the cover groove 214 is adapted to the diameter of the suspension cable 2 and is not greater than the inner diameter of the hollow ball-head positioning pin 22; the ball head of the hollow ball-head positioning pin 22 is pre-inserted into the suspension cable 2 with the ball head facing upward.

[0059] By setting the guide cover 21, which is detachably connected, during lowering, the guide cover 21 is set in the order of cylindrical part 211, conical part 212, and cylindrical part 213 from top to bottom. During the lowering process, the conical part 212 can play the role of conical guidance to avoid environmental obstruction. During hoisting, the guide cover 21 is set in the opposite direction, and the cylindrical part 211 is coaxially fitted outside the top support cylinder 11 that is exposed at the top of the pipe body to be hoisted. This protects the exposed part while using the conical part 212 for conical guidance to avoid environmental obstruction. By opening the cover groove 214, it can be quickly installed and disassembled through the cover groove 214. The ball-head hollow positioning pin 22 plays the role of limiting, that is, the weight of the ball-head hollow positioning pin 22 applies axial pressure to the installed guide cover 21 to compress it and keep it in the installed posture.

[0060] It should be noted that multiple cameras are embedded in the conical surfaces of the guide cover 21 and the bottom support 20 for observing the position and attitude of the tube from multiple angles.

[0061] To further explain the specific structure of the crane 1, the crane 1 is equipped with a gantry frame 3 and a winch 6. The gantry frame 3 is slidably connected to the external environment via a transverse slide rail 4, which is horizontally set and fixedly connected to the external environment. The gantry frame 3 is equipped with a longitudinal slide rail 5, which is horizontally set and perpendicular to the transverse slide rail 4. The winch 6 is slidably connected to the longitudinal slide rail 5, and the hoisting cable 2 is connected to the winch 6.

[0062] With the above settings, the gantry 3 and the transverse slide rail 4 are slidably engaged, allowing the entire gantry 3 to translate along the X-axis. By setting the longitudinal slide rail 5 on the gantry 3 and slidably engaging the winch 6 with the longitudinal slide rail 5, the winch 6 can translate along the Y-axis. The winch 6 then drives the hoisting cable 2 to rise and fall along the Z-axis, so that the hoisting cable 2 can be moved to the coordinate required for installing the pipe.

[0063] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical pipe hoisting system, characterized in that, include: The crane (1) is provided with a lateral moving pair and a longitudinal moving pair. The lateral moving pair and the longitudinal moving pair are perpendicular to each other and are both horizontally arranged. The crane (1) is provided with a lifting cable (2). The inner carrying mechanism includes at least two inner carriers (10), all of which are vertically connected to form the inner carrying mechanism. The top end of the inner carrying mechanism is detachably connected to the free end of the hoisting cable. The inner carrying mechanism is used to pass through the pipe to be hoisted, and the length of the inner carrying mechanism is longer than that of the pipe to be hoisted. The top support mechanism includes multiple top support cylinders (11), each of which corresponds to one of the inner carriers (10) and is fitted onto the corresponding inner carrier (10). The top support cylinder (11) can expand radially outward to compress the inner wall of the pipe to be hoisted. The bottom support (20) is detachably connected to the bottom end of the inner load mechanism, and the size of the bottom support (20) is larger than the inner diameter of the pipe to be hoisted.

2. The vertical pipe hoisting system according to claim 1, characterized in that, The inner carrier (10) is cylindrical, and the diameter of the inner carrier (10) is smaller than the inner diameter of the pipe to be hoisted. All the inner carriers (10) are coaxially spaced and connected. The top support cylinder (11) is coaxially sleeved outside the corresponding inner carrier (10), and the outer wall of the top support cylinder (11) is covered with an elastic friction layer (111).

3. The vertical pipe hoisting system according to claim 2, characterized in that, One end of the inner carrier (10) is coaxially provided with a telescopic column (101), and the telescopic column (101) moves along the axial direction; The top support cylinder (11) includes multiple top support plates (12), all of which are arranged in a ring around the inner carrier (10) to form the top support cylinder (11). The inner wall of the top support plate (12) is respectively hinged with a positioning rod (13) and a support rod (14). The end of the positioning rod (13) away from the top support plate (12) is hinged to the side wall of the inner carrier (10), and the end of the support rod (14) away from the top support plate (12) is hinged to the side wall of the telescopic column (101). The axis of the inner carrier (10) is located in the plane of the positioning rod (13) and the support rod (14) corresponding to each of the top support plates (12); The elastic friction layer (111) is laid on the outer wall of the top support plate (12).

4. The vertical pipe hoisting system according to claim 3, characterized in that, The telescopic column (101) is coaxially slidably fitted with a slip ring (103). The inner wall of the top support plate (12) is hinged with a limiting rod (15). The end of the limiting rod (15) away from the top support plate (12) is hinged with the slip ring (103). The limiting rod (15) is coplanar with the corresponding positioning rod (13) and the support rod (14).

5. The vertical pipe hoisting system according to claim 3, characterized in that, The inner carrier (10) is provided with a hydraulic cylinder (102) at one end away from the telescopic column (101). The hydraulic cylinder (102) is cylindrical and coaxially connected to the inner carrier (10). The diameter of the hydraulic cylinder (102) is smaller than the minimum inner diameter of the top support cylinder (11). The hydraulic cylinder (102) is connected to the telescopic column (101) so that the telescopic column (101) can extend and retract axially.

6. The vertical pipe hoisting system according to claim 5, characterized in that, The inner carrier (10) is coaxially connected with a suspension rod (16), and the two ends of the suspension rod (16) are respectively connected to the corresponding telescopic column (101) and the hydraulic cylinder (102). Both ends of the boom (16) are threaded externally and can be detachably screwed with a lifting ring (161). A connecting cable (162) is provided between the corresponding rings (161) on the corresponding sides of the two inner carriers (10) and the two ends of the connecting cable (162) are detachably hung on the two rings (161) by two hooks respectively. The end of the rod (16) closest to the bottom support (20) passes through the bottom support (20) and is screwed with a locking end (163). The lifting ring (161) furthest from the bottom support (20) is detachably attached to the lifting cable via a hook.

7. The vertical pipe hoisting system according to claim 6, characterized in that, The boom (16) is coaxially fixedly connected to a first connecting plate (164), and the telescopic column (101) is coaxially fixedly connected to a second connecting plate (104) at one end away from the inner carrier (10). The first connecting plate (164) and the second connecting plate (104) are fixedly connected by bolts. The boom (16) is coaxially and slidably fitted with the inner carrier (10) and the hydraulic cylinder (102); One end of the boom (16) that slides into the hydraulic cylinder (102) is screwed with a limit nut (165). When the top support cylinder (11) is retracted to its minimum, the hydraulic cylinder (102) abuts against the limit nut (165).

8. The vertical pipe hoisting system according to claim 7, characterized in that, The inner carrier mechanism includes two inner carriers (10). The other end of the boom (16) connected to the hoisting cable is coaxially threaded with a guide cap (17). The guide cap (17) is conical, and the tip of the guide cap (17) is far away from the corresponding inner carrier (10). The maximum diameter of the guide cap (17) is slightly larger than the diameter of the top support cylinder (11) and the diameter of the hydraulic cylinder (102). The lifting ring (161) screwed to one end of the boom (16) and the guide cap (17) is located inside the guide cap (17). The tip of the guide cap (17) has a through hole coaxially so that the connecting cable (162) and the hook can be inserted into the guide cap (17). The bottom support (20) is conical, and the tip of the bottom support (20) abuts against the locking end (163).

9. The vertical pipe hoisting system according to claim 8, characterized in that, A guide cover (21) is detachably and coaxially provided at one end of the inner carrier (10) near the hoisting cable and away from the other inner carrier (10). The guide cover (21) includes a cylindrical part (211), a conical part (212), and a circular tube part (213) connected coaxially in sequence. The inner diameter of the cylindrical part (211) is adapted to the outer diameter of the pipe body to be hoisted, and the inner diameter of the circular tube part (213) is matched with the diameter of the hoisting cable. The side wall of the guide cover (21) has a cover groove (214) along the busbar. The cover groove (214) extends through the guide cover (21) along the length direction and through the guide cover (21) along the thickness direction. The width of the cover groove (214) matches the diameter of the suspension cable. The guide cover (21) is coaxially sleeved with the hoisting cable through the cover groove (214). When sleeved, the cylindrical part (211) or the cylindrical part (213) faces the corresponding inner carrier (10). When the cylindrical part (211) faces the corresponding inner carrier (10), the cylindrical part (211) is coaxially covered outside the top support cylinder (11); The suspension cable is coaxially fitted with a hollow ball-head locating pin (22), which is used to axially position the guide cover (21).

10. The vertical pipe hoisting system according to claim 1, characterized in that, The crane (1) is equipped with a gantry frame (3) and a winch (6). The gantry frame (3) is slidably connected to the external environment via a transverse slide rail (4). The transverse slide rail (4) is horizontally set and fixedly connected to the external environment. The gantry frame (3) is equipped with a longitudinal slide rail (5). The longitudinal slide rail (5) is horizontally set and perpendicular to the transverse slide rail (4). The winch (6) is slidably connected to the longitudinal slide rail (5). The hoisting cable (2) is connected to the winch (6).

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