A hoisting device and method applied to a large mast

Abstract

The application discloses a hoisting device and a hoisting method applied to a large mast, which comprises an upper hydraulic frame, a lower hydraulic frame and a hydraulic control device, the upper and lower hydraulic frames are detachably connected through connecting rods, and the upper and lower hydraulic frames are respectively provided with hydraulic telescopic round rods and hydraulic telescopic square rods. The hydraulic telescopic round rods and the hydraulic telescopic square rods are controlled to perform telescopic movement through the hydraulic control device, the upper and lower hydraulic frames can be stably installed and fixed on the large mast, the hoisting device provides a hoisting point for the positioning of the mast, the accuracy of hoisting of the large mast and the installation quality are improved, in addition, the flexible adjustment of the distance between the upper and lower hydraulic frames and the telescopic adjustment can adapt to masts with different sizes and shapes, the construction process is simplified, the positioning efficiency and accuracy are improved, the hoisting device has wide universality, meanwhile, the interference and collision between the hoisting device and the mast are avoided by controlling the telescopic adjustment of the round rods and the square rods, the safety and reliability of construction are improved, and the risk is reduced.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, and particularly relates to a hoisting device and hoisting method for large masts. Background Technology

[0002] In shipbuilding, the mast plays a crucial role. It is not only a key structural support for the vessel, but also, with technological advancements, the number of devices mounted on masts is constantly increasing, such as radar, navigation systems, and radio waves. These devices place more stringent requirements on the structure and shape of large masts. To meet these demands, the design of large masts tends towards masthouse and tower structures. This design not only provides a stable platform for better equipment mounting but also ensures sufficient support and stability for large masts when facing wind and other environmental factors.

[0003] Specifically, large masts with tower structures typically employ a variable cross-section lattice structure at the bottom. This design not only enhances the stability of the large mast but also increases its additional support and load-bearing capacity. Meanwhile, the slender mast of the upper conical steel tube structure acts as a guide frame, providing space for the installation of communication antennas and other equipment. Large masts with mast structures, on the other hand, usually have a larger diameter at the bottom that gradually tapers upwards to form a tower-like structure. This design helps enhance the overall structural stability, while the crossbars or platforms at the upper guide frame facilitate the installation of radar, communication equipment, and other devices. However, the special shape of the lower part of a large mast, while providing stable support, also presents difficulties for hoisting and fixing. Furthermore, to ensure that equipment signal transmission is not affected, the structural walls of large masts are designed to be relatively thin. Moreover, to maintain the integrity of the large mast, welding and the installation of lifting rings are not allowed, rendering traditional welding and lifting ring installation methods infeasible on large masts. This undoubtedly increases the difficulty of mast hoisting and installation. At the same time, since the equipment on these masts are all high-value equipment, the installation and hoisting of the large masts also requires ensuring the safety of the equipment and the accurate positioning of the large masts.

[0004] A search revealed that Chinese utility model application CN208916607U discloses a large component hoisting and positioning auxiliary device, comprising a clamping device, an upper ring mounted on the upper part of the clamping device, a connecting block connected to the upper ring, a hoisting plate mounted on the upper part of the connecting block, a hydraulic telescopic rod connected to the lower part of the connecting block, a lower ring connected to the hydraulic telescopic rod, an anti-slip pad installed inside the upper ring, a hoisting component connected to the anti-slip pad, a knob device mounted on the upper ring, a telescopic device mounted on the upper ring, a hoisting device connected to the hoisting plate, a steel rope connected to the hoisting plate, a roller connected to the steel rope, a winding device mounted on the right side of the roller, a crossbeam mounted on the upper side of the winding device, a support rod connected to the crossbeam, and a lower side of the support rod... Equipped with a base, this device, while capable of mechanically clamping and lifting large components, has high requirements for the shape and size of the object being lifted, and is only suitable for regularly shaped cylindrical objects. Furthermore, because it uses a hydraulic telescopic rod to connect and adjust the upper and lower rings, and both rings are fixed to the object using clamps, its stability is insufficient. There is a possibility of damage to the telescopic rod and the object falling during lifting and movement, posing a construction risk. In addition, since the two ends of the hydraulic telescopic rod are fixed to the upper and lower rings respectively, they cannot be disassembled. Therefore, as a single connected unit, when separated from the object, the device is prone to contact friction or collision with the object due to the swaying of the crane's lifting rope, thus having certain limitations.

[0005] Therefore, there is an urgent need for a new hoisting device and method for large masts to solve the above problems and improve the safety and accuracy of hoisting. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention aims to provide a hoisting device and method for large masts. This invention uses a hydraulic control device to separately control the telescopic movement of the hydraulic telescopic round rod and the hydraulic telescopic square bar, enabling the upper and lower hydraulic frames to be stably fixed to the large mast and providing hoisting points for positioning, thus improving the accuracy and installation quality of large mast hoisting. Furthermore, through flexible adjustment of the telescopic adjustment and the distance between the upper and lower hydraulic frames, it can adapt to masts of different sizes and shapes, simplifying the construction process, improving positioning efficiency and accuracy, and exhibiting wide versatility. Simultaneously, by controlling the separate telescopic adjustment of the round rod and square bar, interference and collision between the device and the mast are avoided, improving construction safety and reliability, reducing risks, and ensuring the stable operation of equipment mounted on the mast.

[0007] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a hoisting device for large masts, comprising an upper hydraulic frame, a lower hydraulic frame, and a hydraulic control device. The upper hydraulic frame and the lower hydraulic frame are arranged in parallel and parallel to the ground. The upper and lower hydraulic frames are fixedly connected by a detachable connecting rod. Both the upper hydraulic frame and the lower hydraulic frame are square frame structures.

[0009] The upper hydraulic frame includes an upper lifting ring, a lower lifting ring, and a hydraulic telescopic rod. The hydraulic telescopic rod radiates towards the center and is evenly distributed on the inner side of the upper hydraulic frame. The outer end of the hydraulic telescopic rod is closed and connected to the inner wall of the upper hydraulic frame, and an arc-shaped elastic element is fixed to the inner end of the hydraulic telescopic rod. The hydraulic telescopic rod includes a first telescopic rod and a second telescopic rod. The first telescopic rod is fixedly connected to the inner wall of the upper hydraulic frame, and the second telescopic rod is movably connected to the inner wall of the upper hydraulic frame through a pivot, allowing the second telescopic rod to rotate downwards. An upper lifting ring is fixedly connected to the upper end face of each of the four corners of the upper hydraulic frame, and a lower lifting ring is fixedly connected to the lower end face of each of the four corners of the upper hydraulic frame.

[0010] The lower hydraulic frame is provided with inner lifting rings, outer lifting rings, and hydraulic telescopic strips. Rectangular protrusions extend outward from the corners of the four walls of the lower hydraulic frame. The hydraulic telescopic strips radiate towards the center and are evenly distributed on the inner side of the lower hydraulic frame. The outer ends of the hydraulic telescopic strips penetrate the inner wall of the lower hydraulic frame and are telescopically retracted into the rectangular protrusions. An arc-shaped support is movably connected to the inner end of the hydraulic telescopic strip. The hydraulic telescopic strip includes a third telescopic rod and a fourth telescopic rod. The inner ends of the third and fourth telescopic rods are each provided with a movable connecting groove. The third and fourth telescopic rods are parallel vertically and are movably connected to each other through the movable connecting grooves by an arc-shaped support. An inner lifting ring is fixedly connected to the upper surface of each of the four corners of the lower hydraulic frame. The position of the inner lifting ring is opposite to the position of the lower lifting ring. The inner and lower lifting rings that are opposite each other are fixedly connected by a connecting rod. An outer lifting ring is fixedly connected to the upper surface of each of the rectangular protrusions at the four corners of the lower hydraulic frame.

[0011] The hydraulic control device is used to control the extension and retraction of the hydraulic telescopic round rods and hydraulic telescopic square bars. The hydraulic control device includes a first controller and a second controller. The hydraulic telescopic round rods are connected in series and connected to the first controller. The first controller is installed on the outer side frame of the upper hydraulic frame and is used to control the extension and retraction length of each hydraulic telescopic round rod. The third telescopic rods are connected in series, and the fourth telescopic rods are connected in series. The third and fourth telescopic rods are connected in parallel and connected to the second controller. The second controller is installed on the outer side frame of the lower hydraulic frame and is used to synchronously control and parallel step-by-step control the extension and retraction length of each third and fourth telescopic rod, driving the arc-shaped support to rotate. When the center of the arc of the arc-shaped support is facing directly upward, the arc-shaped support is in a grasping state. When the center of the arc of the arc-shaped support is facing forward and upward, the arc-shaped support is in a releasing state.

[0012] As a preferred technical solution, when the hydraulic telescopic round rod and the hydraulic telescopic square bar are extended to their longest length, the inner diameter of the circle formed is smaller than the minimum outer diameter of the large mast, and when the hydraulic telescopic round rod and the hydraulic telescopic square bar are contracted to their shortest length, the inner diameter of the circle formed is larger than the maximum outer diameter of the large mast.

[0013] As a preferred technical solution, the projection of the inner lifting ring coincides with the projection of the lower lifting ring, ensuring that the connecting rod installed between the inner and lower lifting rings is perpendicular to the ground.

[0014] As a preferred technical solution, the arc-shaped support is L-shaped like a hook, including a vertical section and a horizontal section. A circular hole is provided on the horizontal section, and the arc-shaped support is movably connected to the movable connecting groove of the fourth telescopic rod through the circular hole, so that the arc-shaped support can rotate around the central axis of the circular hole. An elliptical groove is provided on the vertical section, and the arc-shaped support is movably connected to the movable connecting groove of the third telescopic rod through the elliptical groove, so that the arc-shaped support can slide within the elliptical groove.

[0015] As a preferred technical solution, there are four first telescopic rods and four second telescopic rods. Each first telescopic rod is located at the midpoint of the four sides of the upper hydraulic frame, and each second telescopic rod is located at the four corners of the upper hydraulic frame, so that the second telescopic rods are diagonally opposite each other.

[0016] As a preferred technical solution, there are four of each of the third and fourth telescopic rods. The third and fourth telescopic rods are respectively located at the four corners of the upper hydraulic frame, forming a diagonal arrangement in pairs. The third and fourth telescopic rods at the same corner are parallel vertically.

[0017] A second aspect of the present invention provides a hoisting method for large masts, utilizing the hoisting device for large masts as described in any one of claims 1-6, comprising the following steps:

[0018] S1. Place the large mast in the lower hydraulic frame and the upper hydraulic frame, and adjust the hydraulic telescopic square bar and the hydraulic telescopic round bar in sequence according to the outer diameter of the lower structure of the large mast, so that the lower hydraulic frame and the upper hydraulic frame are installed and fixed on the large mast.

[0019] S2. Connect the upper and lower hydraulic frames with connecting rods, and use the upper and outer lifting rings to position the large mast for hoisting.

[0020] S3. After the hoisting and positioning are completed, the hoisting device is removed from the large mast, and the connecting rod, upper hydraulic frame and lower hydraulic frame are removed in sequence to complete the hoisting of the large mast.

[0021] As a preferred technical solution, step S1 includes the following specific steps:

[0022] S1-1. Install a lower hydraulic frame at the lower end of the large mast's lower structure: Based on the outer diameter of the lower end of the large mast's lower structure, extend and retract the hydraulic telescopic bar to a suitable length using a hydraulic control device, and adjust the position of the arc center of the arc support so that the arc center of the arc support faces directly upward to grip the lower end of the large mast.

[0023] S1-2. Install a hydraulic frame near the upper end of the lower structure of the large mast: Based on the outer diameter of the lower structure of the large mast near the upper end, extend and retract the hydraulic telescopic rod to a suitable length through the hydraulic control device, so that the arc-shaped elastic element is tightly attached to the outer wall of the large mast.

[0024] As a preferred technical solution, step S2 includes the following specific steps: determining the length of the connecting rod based on the distance from the upper hydraulic frame to the lower hydraulic frame of the large mast, and then detachably connecting both ends of the connecting rod to the lower lifting ring and the inner lifting ring respectively, so that the upper hydraulic frame and the lower hydraulic frame are connected as one unit; by threading the lifting rope through each upper lifting ring and the outer lifting ring and pulling it upwards at the same time, the lifting and hoisting device is lifted and the large mast is moved until the large mast is hoisted to the pre-installation position for positioning.

[0025] As a preferred technical solution, step S3 includes the following specific steps:

[0026] S3-1. Remove the connecting rod from the lower lifting ring and the inner lifting ring;

[0027] S3-2. Remove the upper hydraulic frame and lower hydraulic frame sequentially from top to bottom: When removing the upper hydraulic frame, retract the hydraulic telescopic rod, adjust the angle of the upper hydraulic frame, and lift the upper hydraulic frame off from above the large mast; when removing the lower hydraulic frame, retract the hydraulic telescopic bar, adjust the angle of the lower hydraulic frame, and lift the upper hydraulic frame off from above the large mast.

[0028] As described above, the present invention has the following beneficial effects:

[0029] (1) The hoisting device and hoisting method of the present invention for large masts effectively solve the technical problems of hoisting and positioning installation of large masts by simplifying the operation process and improving the positioning accuracy; the structural design focuses on user experience, making the operation process simple and intuitive, while ensuring the accuracy of mast positioning, solving the problem of difficult positioning of large masts and improving the installation quality; in addition, the present invention fully considers safety factors in its design, avoids interference and collision between the structure and the large mast, enhances safety and reliability, and reduces construction risks.

[0030] (2) The present invention provides a lifting device for large masts, which can be manufactured in various sizes according to production requirements, and the usable inner diameter can be controlled by the freely telescopic length, thereby meeting the installation and lifting needs of large masts of various shapes on various types of ships. The different shapes include, but are not limited to, square, round, and multifaceted shapes, and are not limited to specific types or sizes of masts, showing strong adaptability and versatility. This simplifies the lifting and construction process of large masts and solves the problem of inconvenience in traditional lifting and construction methods. In addition, through improved design, it also reduces potential safety hazards during the lifting process and improves positioning efficiency and accuracy.

[0031] (3) The hoisting device of the present invention for large masts has a simple structural design and few parts, which simplifies the process and makes it easy to maintain and operate. In addition, the device uses common and easy-to-produce components, which allows the device to be used repeatedly, avoiding the waste of materials and other resources. At the same time, the device has a low production cost and its reusable characteristics can effectively reduce long-term use costs, which makes the device widely used in the shipbuilding process and has a good industrial application prospect. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the hoisting device installed on a large mast in this invention.

[0033] Figure 2 yes Figure 1 A schematic diagram of the overall structure of the hoisting device with the large mast hidden in the middle.

[0034] Figure 3This is a schematic diagram of the structure of the hydraulic telescopic round rod and the hydraulic telescopic square bar in this invention when they are retracted to their shortest length.

[0035] Figure 4 This is a schematic diagram of the extension and retraction dynamics of the hydraulic telescopic rod of the upper hydraulic frame in this invention.

[0036] Figure 5 This is a schematic diagram of the structure of the inner arc-shaped support hand of the hydraulic telescopic square bar in the present invention when it is in the released state.

[0037] Figure 6 This is a schematic diagram of the structure of the inner arc-shaped support hand of the hydraulic telescopic square bar in the present invention when it is in the grasping state.

[0038] Figure 7 This is a schematic diagram of the extension and retraction of the hydraulic telescopic strip of the lower hydraulic frame in this invention.

[0039] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Large mast; 2. Upper hydraulic frame; 21. Upper lifting ring; 22. Lower lifting ring; 23. Hydraulic telescopic round rod; 231. First telescopic rod; 232. Second telescopic rod; 233. Rotating shaft; 234. Elastic element; 3. Lower hydraulic frame; 31. Rectangular protrusion; 32. Inner lifting ring; 33. Outer lifting ring; 34. Hydraulic telescopic square bar; 341. Third telescopic rod; 342. Fourth telescopic rod; 343. Arc-shaped support; 3431. Elliptical groove; 3432. Circular hole; 41. First controller; 42. Second controller; 5. Connecting rod. Detailed Implementation

[0040] To better understand the purpose, structure, and function of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments.

[0041] In the description of this invention, it should be noted that the positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on the positional relationships shown in the accompanying drawings and are only for the purpose of facilitating the description of the embodiments of this invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore should not be construed as a limitation of this invention.

[0042] Example 1

[0043] like Figures 1 to 7As shown, this embodiment provides a hoisting device for large masts, including an upper hydraulic frame 2, a lower hydraulic frame 3, and a hydraulic control device. The upper hydraulic frame 2 and the lower hydraulic frame 3 are arranged in parallel and parallel to the ground. The upper hydraulic frame 2 and the lower hydraulic frame 3 are detachably fixed together by a connecting rod 5, so that the upper hydraulic frame 2 and the lower hydraulic frame 3 are connected as one unit to form a complete hoisting device. In this embodiment, the upper hydraulic frame 2 and the lower hydraulic frame 3 have a square frame structure, and the corners of the four walls of the upper hydraulic frame 2 and the lower hydraulic frame 3 are provided with inward chamfers.

[0044] The upper hydraulic frame 2 includes an upper lifting ring 21, a lower lifting ring 22, and a hydraulic telescopic rod 23. An upper lifting ring 21 is fixedly connected to the upper end face of each of the four corners of the upper hydraulic frame 2 to provide a lifting point; a lower lifting ring 22 is fixedly connected to the lower end face of each of the four corners of the upper hydraulic frame 2 to provide a connection point with the lower hydraulic frame 3.

[0045] The hydraulic telescopic rod 23 radiates towards the center and is evenly distributed on the inner side of the upper hydraulic frame 2. The outer end of the hydraulic telescopic rod 23 is closed and connected to the inner wall of the upper hydraulic frame 2, so that the hydraulic telescopic rod 23 and the upper hydraulic frame 2 form a complete hydraulic device. An arc-shaped elastic element 234 is fixed to the inner end of the hydraulic telescopic rod 23. In this embodiment, the elastic element 234 is a rubber strip. By installing the rubber strip at the head end of the hydraulic telescopic rod 23, the contact friction with the large mast 1 can be effectively increased, ensuring the stability of the hoisting process. At the same time, since the rubber strip is soft, it can provide cushioning protection and avoid damage to the large mast 1 itself or the equipment installed on the large mast 1.

[0046] In this embodiment, the hydraulic telescopic rod 23 includes a first telescopic rod 231 and a second telescopic rod 232. The first telescopic rod 231 is fixedly connected to the inner wall of the upper hydraulic frame 2, and the second telescopic rod 232 is movably connected to the inner wall of the upper hydraulic frame 2 via a pivot 233, allowing the second telescopic rod 232 to rotate downwards for easy disassembly of the hoisting device. Simultaneously, during disassembly, rotating the second telescopic rod 232 downwards reduces the risk of contact and collision between the overall structure of the upper hydraulic frame 2 and the large mast 1. In this embodiment, there are four of each of the first telescopic rod 231 and the second telescopic rod 232. Each first telescopic rod 231 is located at the midpoint of one of the four sides of the upper hydraulic frame 2, and each second telescopic rod 232 is located at one of the four corners of the upper hydraulic frame 2, forming a diagonal arrangement. Therefore, there are eight hydraulic telescopic rods 23 in total, positioned in eight different locations.

[0047] The lower hydraulic frame 3 is equipped with an inner lifting ring 32, an outer lifting ring 33, and a hydraulic telescopic bar 34. Rectangular protrusions 31 extend outward from the corners of the four sides of the lower hydraulic frame 3. These protrusions provide storage space for the hydraulic telescopic bar 34 and space for the outer lifting ring 33 to provide lifting points. An inner lifting ring 32 is fixedly connected to the upper surface of each of the four corners of the lower hydraulic frame 3, providing a connection point with the upper hydraulic frame 2. The positions of the inner lifting rings 32 and the lower lifting rings 22 are opposite each other, and the two opposing inner lifting rings 32 and lower lifting rings 22 are fixedly connected by a connecting rod 5. In this embodiment, the connecting rod 5 is a detachable pull rod, the length of which can be selected according to the lower height of the large mast 1. In this embodiment, the projection of the inner lifting ring 32 coincides with the projection of the lower lifting ring 22, making the connecting rod 5 installed between the inner lifting ring 32 and the lower lifting ring 22 perpendicular to the ground, providing better support for the lifting and hoisting of the large mast 1; each of the rectangular protrusions 31 located at the four corners of the lower hydraulic frame 3 is fixedly connected to an outer lifting ring 33 to provide a lifting point.

[0048] The hydraulic telescopic strips 34 radiate towards the center and are evenly distributed on the inner side of the lower hydraulic frame 3. The outer ends of the hydraulic telescopic strips 34 penetrate the inner wall of the lower hydraulic frame 3 and are telescopically stored in the rectangular protrusion 31, so that the hydraulic telescopic strips 34 and the lower hydraulic frame 3 form a complete hydraulic device. An arc-shaped support 343 is movably connected to the inner end of the hydraulic telescopic strips 34. In this embodiment, the hydraulic telescopic square bar 34 includes a third telescopic rod 341 and a fourth telescopic rod 342. The inner ends of both the third telescopic rod 341 and the fourth telescopic rod 342 are provided with movable connecting grooves. There are four of each type of third telescopic rod 341 and fourth telescopic rod 342. The third telescopic rod 341 and fourth telescopic rod 342 are respectively located at the four corners of the upper hydraulic frame 2, forming diagonal pairs. The third telescopic rod 341 and fourth telescopic rod 342 at the same corner are parallel vertically, and an arc-shaped support 343 is movably connected between the third telescopic rod 341 and fourth telescopic rod 342 through the movable connecting grooves. That is, there are eight hydraulic telescopic square bars 34 in total, divided into four groups of two parallel vertically arranged bars, each group located in one of the four cardinal directions.

[0049] The arc-shaped support 343 includes a vertical section and a horizontal section, and the arc-shaped support 343 is generally L-shaped like a hook. A circular hole 3432 is provided on the horizontal section, and the arc-shaped support 343 is movably connected to the movable connecting groove of the fourth telescopic rod 342 through the circular hole 3432, so that the arc-shaped support 343 can rotate around the central axis of the circular hole 3432. An elliptical groove 3431 is provided on the vertical section, and the arc-shaped support 343 is movably connected to the movable connecting groove of the third telescopic rod 341 through the elliptical groove 3431, so that the arc-shaped support 343 can slide in the elliptical groove 3431.

[0050] The hydraulic control device is used to control the hydraulic telescopic round rod 23 and the hydraulic telescopic square bar 34 to extend and retract towards the center of the upper hydraulic frame 2 and the lower hydraulic frame 3, respectively, thus adapting to large masts 1 of different sizes. When the hydraulic telescopic round rod 23 and the hydraulic telescopic square bar 34 are extended to their longest length, the inner diameter of the circle formed is smaller than the minimum outer diameter of the large mast 1, thereby ensuring the stability between the arc-shaped elastic element 234 when clamping and the arc-shaped support arm 343 when lifting the large mast 1; when the hydraulic telescopic round rod 23 and the hydraulic telescopic square bar 34 are retracted to their shortest length, the inner diameter of the circle formed is larger than the maximum outer diameter of the large mast 1, thereby ensuring that the device does not interfere with the large mast 1 during installation and disassembly, avoiding the risk of interference or collision with the large mast 1 during disassembly.

[0051] The hydraulic control device includes a first controller 41 and a second controller 42. Each hydraulic telescopic rod 23 is connected in series and connected to the first controller 41. The first controller 41 is installed on the outer frame of the upper hydraulic frame 2 and is used to control the extension and retraction length of each hydraulic telescopic rod 23. By controlling the hydraulic telescopic rods 23 to move synchronously towards or away from the center, the arc-shaped elastic element 234 is made to form a circle, thereby better fitting and fixing to the upper shape of the large mast 1. Each third telescopic rod 341 is connected in series, and each fourth telescopic rod 342 is connected in series. Furthermore, each third telescopic rod 341 and each fourth telescopic rod 342 are connected in parallel and connected to the second controller 42. The second controller 42 is installed on the outer frame of the lower hydraulic frame 3 and is used to control the telescopic length of each hydraulic telescopic bar 34. By controlling the third telescopic rods 341 and 342 to synchronously telescopically move towards or away from the center, and by controlling the third telescopic rods 341 to further telescopically extend and retract, driving the arc-shaped support 343 to rotate inward to grasp or release, the synchronous control and parallel step-by-step control of the telescopic lengths of the third telescopic rods 341 and 342 are achieved. Figure 6 As shown, when the center of the arc of the arc-shaped support 343 faces directly upward, the arc-shaped support 343 is in a grasping state, as... Figure 5As shown, the arc-shaped support 343 is in a released state when the center of the arc faces forward and upward.

[0052] Example 2

[0053] like Figure 1 As shown, this embodiment provides a hoisting method for a large mast using a hoisting device according to Embodiment 1, including the following steps:

[0054] S1. Place the large mast 1 in the lower hydraulic frame 3 and the upper hydraulic frame 2, and adjust the hydraulic telescopic square bar 34 and the hydraulic telescopic round bar 23 in sequence according to the size of the large mast 1, so that the lower hydraulic frame 3 and the upper hydraulic frame 2 are installed and fixed on the large mast 1.

[0055] S1-1. Install a lower hydraulic frame 3 at the lower end face of the lower structure of the large mast 1: According to the outer diameter of the lower end face of the lower structure of the large mast 1, extend and retract the hydraulic telescopic bar 34 to a suitable length through the hydraulic control device, and adjust the arc center position of the arc support 343 so that the arc center of the arc support 343 faces directly upward to grab the lower end face of the large mast 1, thereby supporting the large mast 1 and keeping the large mast 1 upright.

[0056] Specifically, the lower hydraulic frame 3 is moved to be flush with the lower end face of the lower structure of the large mast 1. The second controller 42 controls the third telescopic rods 341 and fourth telescopic rods 342 located at the four corners to extend simultaneously to the center of the lower hydraulic frame 3 until the vertical section of the arc-shaped support 343 contacts the outer edge of the lower end face. Then, the second controller 42 controls only all the third telescopic rods 341 to retract simultaneously, so that each arc-shaped support 343 rotates around the central axis of the circular hole 3432 until the arc center of all the arc-shaped support 343 faces directly upward and is fixed with the clamp of the lower structure of the large mast 1, thus completing the installation of the lower hydraulic frame 3 at the lower end face of the lower structure of the large mast 1.

[0057] S1-2. Install a hydraulic frame 2 near the upper end face of the lower structure of the large mast 1: Based on the outer diameter of the lower structure of the large mast 1 near the upper end face, extend and retract the hydraulic telescopic rod 23 to a suitable length through the hydraulic control device, so that the arc-shaped elastic element 234 is in full contact with the outer side wall of the lower structure of the large mast 1, ensuring that the large mast 1 remains upright.

[0058] Specifically, the upper hydraulic frame 2 is moved to be flush with the bottom end face of the large mast 1. The first telescopic rod 231 and the second telescopic rod 232 are controlled by the first controller 41 to extend simultaneously to the center of the upper hydraulic frame 2 until the rubber strip clamp is fixed to the outer wall of the lower structure of the large mast 1, thus completing the installation of the lower hydraulic frame 3 near the upper end face of the lower structure of the large mast 1.

[0059] S2. Connect the upper hydraulic frame 2 and the lower hydraulic frame 3 using the connecting rod 5, and use the upper lifting ring 21 and the outer lifting ring 33 to position the large mast 1 for hoisting: Determine the length of the connecting rod 5 based on the distance from the upper hydraulic frame 2 to the lower hydraulic frame 3 of the large mast 1, and then detachably connect both ends of the connecting rod 5 to the lower lifting ring 22 and the inner lifting ring 32 respectively, so that the upper hydraulic frame 2 and the lower hydraulic frame 3 are connected as one unit; In this embodiment, the lower lifting ring 22 and the inner lifting ring 32 are connected by a detachable pull bar. Thread the crane's lifting rope into each of the upper lifting ring 21 and the outer lifting ring 33 to ensure that the hoisting device can be securely lifted and moved. Then, pull the lifting rope upwards simultaneously to lift the hoisting device and move the large mast 1 until the large mast 1 is hoisted to the pre-installation position for positioning, to ensure the accuracy and safety of the installation.

[0060] S3. After the hoisting and positioning are completed, the hoisting device is removed from the large mast 1, and the connecting rod 5, the upper hydraulic frame 2 and the lower hydraulic frame 3 are removed in sequence to complete the hoisting of the large mast 1.

[0061] S3-1. Remove connecting rod 5 from lower lifting ring 22 and inner lifting ring 32: Disconnect the detachable pull bar by opening the connection between the detachable pull bar and lower lifting ring 22 and inner lifting ring 32 respectively.

[0062] S3-2. Remove the upper hydraulic frame 2 and the lower hydraulic frame 3 from top to bottom in sequence:

[0063] When dismantling the upper hydraulic frame 2, after retracting the hydraulic telescopic rod 23, adjust the angle of the upper hydraulic frame 2 and lift it off the large mast 1. Specifically, firstly, the first telescopic rod 231 and the second telescopic rod 232 are simultaneously retracted away from the center of the upper hydraulic frame 2 by the first controller 41 until the first telescopic rod 231 and the second telescopic rod 232 are retracted to their shortest length. Then, the second telescopic rod 232 is rotated around the pivot 233 to its lowest position. Subsequently, the angle of the upper hydraulic frame 2 is adjusted so that the first telescopic rod 231 avoids collision and interference with the guide frame of the large mast 1, and the upper hydraulic frame 2 is lifted off the large mast 1 by the hoisting rope connected to the upper lifting ring 21.

[0064] When removing the lower hydraulic frame 3, after retracting the hydraulic telescopic bar 34, adjust the angle of the lower hydraulic frame 3 and lift it off the upper hydraulic frame 2 from above the large mast 1. Specifically, first, control all the third telescopic rods 341 to extend outward simultaneously using the second controller 42, causing each arc-shaped support arm 343 to rotate around the central axis of the circular hole 3432 until the arc center of all the arc arms 343 returns to facing forward and upward. Then, loosen the clamp fixing points with the lower structure of the large mast 1, and then... Figure 7As shown, the second controller 42 controls the third telescopic rods 341 and 342 located at the four corners to retract simultaneously away from the center of the lower hydraulic frame 3 until the third telescopic rods 341 and 342 are retracted to their shortest length. Then, the angle of the lower hydraulic frame 3 is adjusted so that the third telescopic rods 341 and 342 avoid collision and interference with the guide frame of the large mast 1. The lower hydraulic frame 3 is then lifted off the large mast 1 from above by the hoisting rope connected to the outer lifting ring 33.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Those skilled in the art can make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this invention.

Claims

1. A hoisting device for use in connection with a large mast, characterized in that Including upper hydraulic frame (2), lower hydraulic frame (3) and hydraulic control device, the upper hydraulic frame (2) and the lower hydraulic frame (3) are arranged in parallel and parallel to the ground, and the upper and lower hydraulic frames (3) are fixedly connected by detachable connecting rods (5), the upper hydraulic frame (2) and the lower hydraulic frame (3) are square frame structure; The upper hydraulic frame (2) includes upper lifting ring (21), lower lifting ring (22) and hydraulic telescopic round rod (23), the hydraulic telescopic round rod (23) is radially and uniformly distributed to the inside of the upper hydraulic frame (2), the outside end of the hydraulic telescopic round rod (23) is closed and connected to the inside wall of the upper hydraulic frame (2), the inside end of the hydraulic telescopic round rod (23) is fixed with an arc-shaped elastic member (234), the hydraulic telescopic round rod (23) includes first telescopic rod (231) and second telescopic rod (232), the first telescopic rod (231) is fixedly connected to the inside wall of the upper hydraulic frame (2), the second telescopic rod (232) is movably connected to the inside wall of the upper hydraulic frame (2) through the pivot (233), so that the second telescopic rod (232) can be rotated downward, the upper end surface of each corner of the upper hydraulic frame (2) is fixedly connected with the upper lifting ring (21), and the lower end surface of each corner of the upper hydraulic frame (2) is fixedly connected with the lower lifting ring (22); The lower hydraulic frame (3) is provided with inner lifting ring (32), outer lifting ring (33) and hydraulic telescopic square bar (34), the corners of the peripheral wall of the lower hydraulic frame (3) are outwardly extended and provided with rectangular convex bodies (31), the hydraulic telescopic square bar (34) is radially and uniformly distributed to the inside of the lower hydraulic frame (3), the outside end of the hydraulic telescopic square bar (34) penetrates the inside wall of the lower hydraulic frame (3) and is telescopic and stored in the rectangular convex body (31), the inside end of the hydraulic telescopic square bar (34) is movably connected with an arc-shaped hand support (343), the hydraulic telescopic square bar (34) includes third telescopic rod (341) and fourth telescopic rod (342), the inside end of the third telescopic rod (341) and the fourth telescopic rod (342) is provided with a movable connecting groove, the third telescopic rod (341) and the fourth telescopic rod (342) are arranged in parallel, and an arc-shaped hand support (343) is movably connected between the third telescopic rod (341) and the fourth telescopic rod (342) through the movable connecting groove, the upper end surface of each corner of the lower hydraulic frame (3) is fixedly connected with the inner lifting ring (32), the positions of the inner lifting ring (32) and the lower lifting ring (22) are opposite, and the inner lifting ring (32) and the lower lifting ring (22) are fixedly connected by the connecting rod (5), the upper end surface of each rectangular convex body (31) at the corner of the lower hydraulic frame (3) is fixedly connected with the outer lifting ring (33). The hydraulic control device is used for controlling the extension and retraction of the hydraulic telescopic round rods (23) and the hydraulic telescopic square rods (34); the hydraulic control device comprises a first controller (41) and a second controller (42), each hydraulic telescopic round rod (23) is connected in series and connected to the first controller (41), the first controller (41) is installed on the outer side frame of the upper hydraulic frame (2) and is used for controlling the extension and retraction length of each hydraulic telescopic round rod (23); each third telescopic rod (341) is connected in series, each fourth telescopic rod (342) is connected in series, and each third telescopic rod (341) and each fourth telescopic rod (342) are connected in parallel and connected to the second controller (42), the second controller (42) is installed on the outer side frame of the lower hydraulic frame (3) and is used for synchronously controlling and stepwise controlling the extension and retraction length of each third telescopic rod (341) and fourth telescopic rod (342) in parallel, driving the arc-shaped supporting hand (343) to rotate, when the arc center of the arc-shaped supporting hand (343) is directed upward, the arc-shaped supporting hand (343) is in a grabbing state, and when the arc center of the arc-shaped supporting hand (343) is directed upward and forward, the arc-shaped supporting hand (343) is in a releasing state.

2. The hoisting device for a large mast according to claim 1, wherein When the hydraulic telescopic round rods (23) and the hydraulic telescopic square rods (34) are extended to the longest, the formed circular inner diameter is smaller than the minimum outer diameter of the large mast (1), and when the hydraulic telescopic round rods (23) and the hydraulic telescopic square rods (34) are retracted to the shortest, the formed circular inner diameter is larger than the maximum outer diameter of the large mast (1).

3. The hoisting device for large masts according to claim 1, characterized in that The projection of the inner lifting ring (32) coincides with the projection of the lower lifting ring (22), and the connecting rod (5) installed between the inner lifting ring (32) and the lower lifting ring (22) is perpendicular to the ground.

4. The hoisting device for a large mast according to claim 1, wherein The arc-shaped supporting hand (343) is in an L-shaped hook shape and comprises a vertical segment and a horizontal segment, a circular hole (3432) is formed in the horizontal segment, the arc-shaped supporting hand (343) is movably connected in the movable connecting groove of the fourth telescopic rod (342) through the circular hole (3432), so that the arc-shaped supporting hand (343) can rotate around the axis of the circular hole (3432); an elliptical groove (3431) is formed in the vertical segment, and the arc-shaped supporting hand (343) is movably connected in the movable connecting groove of the third telescopic rod (341) through the elliptical groove (3431), so that the arc-shaped supporting hand (343) can slide in the elliptical groove (3431).

5. The hoisting device for large masts according to claim 1, characterized in that The number of the first telescopic rods (231) and the second telescopic rods (232) is four respectively, each first telescopic rod (231) is arranged at the midpoint of the four edges of the upper hydraulic frame (2), and each second telescopic rod (232) is arranged at the four corners of the upper hydraulic frame (2), so that the second telescopic rods (232) are opposite to each other to form opposite angles.

6. The hoisting device for a large mast according to claim 1, wherein The third telescopic rods (341) and the fourth telescopic rods (342) are four in number, and are arranged at four corners of the upper hydraulic frame (2) respectively, and form a pair of opposite angles, and the third telescopic rods (341) and the fourth telescopic rods (342) at the same corner are parallel to each other.

7. The hoisting device for large masts according to claim 1, characterized in that The connecting rod (5) is a detachable strip, and the length of the detachable strip is selected according to the lower height of the large mast (1).

8. A hoisting method for a large mast using the hoisting device for a large mast according to any one of claims 1 to 7, characterized by, The method comprises the following steps: S1, placing the large mast (1) in the lower hydraulic frame (3) and the upper hydraulic frame (2), and adjusting the hydraulic telescopic square bars (34) and the hydraulic telescopic round rods (23) according to the outer diameter size of the lower structure of the large mast (1) to install and fix the lower hydraulic frame (3) and the upper hydraulic frame (2) on the large mast (1); S2, connecting the upper hydraulic frame (2) and the lower hydraulic frame (3) through the connecting rod (5), and using the upper lifting ring (21) and the outer lifting ring (33) to hoist and position the large mast (1); S3, after the hoisting and positioning is completed, the hoisting device is detached from the large mast (1), the connecting rod (5), the upper hydraulic frame (2) and the lower hydraulic frame (3) are removed in sequence, and the hoisting of the large mast (1) is completed.

9. A method of hoisting a large mast according to claim 8, characterized in that The step S1 comprises the following specific steps: S1-1, installing the lower hydraulic frame (3) at the lower end surface of the lower structure of the large mast (1): according to the outer diameter size of the lower end surface of the lower structure of the large mast (1), the hydraulic telescopic square bars (34) are extended or retracted to a suitable length through the hydraulic control device, and the arc center position of the arc-shaped supporting hand (343) is adjusted, so that the arc center of the arc-shaped supporting hand (343) faces directly upward to grab the lower end surface of the large mast (1); S1-2, installing the upper hydraulic frame (2) at the upper end surface of the lower structure of the large mast (1): according to the outer diameter size of the upper end surface of the lower structure of the large mast (1), the hydraulic telescopic round rods (23) are extended or retracted to a suitable length through the hydraulic control device, so that the arc-shaped elastic member (234) is tightly attached to the outer side wall of the large mast (1).

10. A method of hoisting a large mast according to claim 8, characterized in that The step S2 comprises the following specific steps: according to the distance from the upper hydraulic frame (2) to the lower hydraulic frame (3) of the large mast (1), the length of the connecting rod (5) is determined, then the two ends of the connecting rod (5) are detachably connected to the lower lifting ring (22) and the inner lifting ring (32) respectively, so that the upper hydraulic frame (2) and the lower hydraulic frame (3) are connected to form a whole; by passing the lifting rope through each upper lifting ring (21) and outer lifting ring (33) and simultaneously pulling upward, the lifting device is lifted and the large mast (1) is moved until the large mast (1) is hoisted to the prepared installation position for positioning.

11. A method of hoisting a large mast according to claim 8, characterized in that The step S3 comprises the following specific steps: S3-1, removing the connecting rod (5) from the lower lifting ring (22) and the inner lifting ring (32); S3-2, sequentially remove the upper hydraulic frame (2) and the lower hydraulic frame (3) from top to bottom: when removing the upper hydraulic frame (2), retract the hydraulic telescopic round rod (23), adjust the angle of the upper hydraulic frame (2), and lift the upper hydraulic frame (2) from above the large mast (1); when removing the lower hydraulic frame (3), retract the hydraulic telescopic square bar (34), adjust the angle of the lower hydraulic frame (3), and lift the upper hydraulic frame (2) from above the large mast (1).

Images