Hoisting elevator for port ship and loading and unloading

Abstract

The invention relates to the technical field of ship structures, in particular to a port ship and loading and unloading hoisting lifter which comprises a deck, two conveying and placing assemblies arranged on the front side and the rear side of the deck and clamping and pushing assemblies arranged on the left sides and the right sides of the conveying and placing assemblies. A plurality of elastic side jacking assemblies are further distributed on the left side and the right side of the deck in an arrayed mode, each conveying and placing assembly comprises two rotating rollers rotationally installed on the front side and the rear side of the deck, the conveying and placing assemblies are arranged on the two sides of the deck, and a hoisting elevator is arranged between the two conveying and placing assemblies; in this way, objects can be effectively conveyed to a fixed point position through the conveying belts of the two conveying and placing assemblies, and hoisting, loading and unloading of a hoisting lifter are facilitated; the clamping and pushing assembly is further arranged to clamp and fix the left sides and the right sides of the objects on the conveying belt, part of the objects can be pushed to the middle in a concentrated mode to be limited, and the clamping and pushing assembly is matched with tightening and binding of the fixing belt.

Description

Technical Field

[0001] This invention relates to a hoisting machine for port vessels and loading / unloading, and pertains to the field of shipbuilding technology. Background Technology

[0002] With the rapid development of global shipping and logistics, port vessels, as the core carriers of cargo transportation, directly determine the quality of logistics turnover through their operational efficiency and safety. In the berthing process, existing port vessels often lack effective elastic support mechanisms, making them prone to rigid collisions with the dock or auxiliary facilities. This leads to stress concentration on the hull sides, reducing berthing stability and increasing the risk of equipment damage. Simultaneously, in cargo transportation and storage, when materials are collected and placed on the ship's deck, the lack of effective fixing structures makes them prone to displacement or even scattering under ship swaying or rough sea conditions. Furthermore, existing conveying devices struggle to achieve stable point-to-point transport, resulting in low cargo collection efficiency. In addition, in the critical loading and unloading stages, current operations primarily rely on external cranes located on the port shore, such as gantry cranes or tower crane grabs, for lifting. This traditional unloading method is inefficient and highly susceptible to environmental influences. Because the lifting equipment is not integrated with the ship, the ship cannot coordinate with shore-based equipment during loading and unloading, significantly limiting operational flexibility and convenience. Furthermore, the existing lifting hoists often have inadequate support structure designs when rotating and hoisting objects, making it difficult to provide stable support during dynamic rotation. This results in objects swaying during hoisting, posing significant safety hazards and severely restricting the improvement of the overall performance of port vessels. Therefore, this application proposes an improved lifting hoist for port vessels and loading / unloading. Summary of the Invention

[0003] The present invention provides a hoist for port vessels and loading / unloading, which overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: a port vessel, including a deck, two conveying and placing assemblies located at the front and rear of the deck, and clamping and pushing assemblies located on the left and right sides of the conveying and placing assemblies. A hoist is movably installed in the middle of the deck. Multiple elastic side-support assemblies are also arranged on the left and right sides of the deck. The conveying and placing assemblies include two rotating rollers rotatably installed on the front and rear sides of the deck, and a conveyor belt is sleeved on the two rotating rollers. The upper side of the conveyor belt is flush with the upper side of the deck. The conveyor belt is used for conveying objects forward and backward. A drive box for driving the rotating rollers to rotate is installed on the deck. Multiple rotating support rods for rotatingly supporting the upper side of the conveyor belt are rotatably arranged through the middle of the conveyor belt, and both ends of each rotating support rod are rotatably inserted through the left and right sides of the deck. The elastic side-support assemblies are located at both ends of each rotating support rod.

[0005] A further improvement based on the above technical solution is that the clamping and pushing assembly includes two side plates locked to the upper side of the deck, and the conveyor belt is located between the two side plates. Two transmission rods are rotatably installed between the two side plates, and two movable push plates are provided through the two transmission rods for clamping objects or pushing objects to move towards the center. The left and right sides of the transmission rods are respectively provided with opposite threads, and the two opposite threads are respectively threadedly connected to the movable push plates. The side plates are equipped with a transmission motor for driving the transmission rods to rotate.

[0006] A further improvement based on the above technical solution is that a binding rod is fixedly provided on the side of the side fixing plate, and a fixing strap is connected between the binding rods of the two side fixing plates, so as to bind and fix the object by the fixing strap.

[0007] Based on the above technical solution, the elastic side top assembly includes ball heads fixed at both ends of the rotating support rod and elastic support springs sleeved on both ends of the rotating support rod, such that one end of the elastic support spring is pressed against the ball head and the other end is in elastic contact with the side of the deck, and a rubber head sleeve is rotatably sleeved on the ball head.

[0008] A loading and unloading hoist structure includes a base installed on the upper side of the middle of the deck and an upper support column movably installed on the upper side of the base. A first movable boom is rotatably installed on the upper side of the upper support column. A second movable boom is telescopically embedded at the front end of the first movable boom. A third movable boom is telescopically embedded at the front end of the second movable boom. A first telescopic rod for pushing and pulling the second movable boom is installed on the upper side of the first movable boom. A second telescopic rod for pushing and pulling the third movable boom is installed on the upper side of the second movable boom. A sling is installed at the outer end of the third movable boom.

[0009] Furthermore, a first telescopic support rod is movably hinged between the upper support column and the first movable hanging rod, forming the first triangular support structure.

[0010] Furthermore, a rotating ring is rotatably installed in the middle of the base, and a second telescopic support rod is hinged to the rotating ring. The second telescopic support rod is movably connected to the outer end of the third movable hanging rod, forming a second triangular support structure.

[0011] Furthermore, multiple rotating motors are installed in a ring around the outer periphery of the upper support column, and each rotating motor shaft is equipped with a transmission gear. A gear ring is fixedly installed on the upper side of the base, and the transmission gear meshes with the gear ring. A rotating insert is fixedly provided at the bottom of the upper support column, and the rotating insert passes through and is rotatably connected to the upper side of the base.

[0012] Furthermore, an outer cover is fixedly provided in the middle of the upper support column, and the outer cover covers the outer periphery of each rotating motor.

[0013] By adopting the above-described technical solution, the present invention has the following advantages over the prior art: This invention features conveyor placement components on both sides of the deck, with a lifting hoist positioned between the two components. The conveyor belts of these components effectively transport objects to designated locations, facilitating lifting and unloading by the hoist. A clamping and pushing component clamps and secures objects on the left and right sides of the conveyor belt, and pushes some objects towards the center for containment. Combined with the tightening and binding of the fixing straps, this significantly improves the stability of the objects on the conveyor belt and facilitates hoisting by the hoist. Furthermore, the two transmission rods help to keep objects at the bottom edge confined to the conveyor belt, preventing them from detaching or swaying out. The rotating support rod can not only rotate and support the conveyor belt, but also be used in conjunction with the elastic side top assembly, so that when the ship docks, the elastic support spring and rubber head cover of the elastic side top assembly can make contact with the elastic support of the dock, reducing the rigid contact between them. Moreover, the rubber head cover can rotate to different directions to adapt to different contact surfaces along the shore. When the lifting hoist is used in conjunction with the conveyor placement assembly, the upper support column is rotatably mounted on the base via a rotating rod, and is driven by the gears of multiple rotating motors meshing with the gear rings on the base. Therefore, the upper part of the upper support column can rotate stably in all directions on the deck, thus corresponding to objects in a wide range of positions on the two conveyor belts. When the lifting hoist cannot reach the outer end of the conveyor belt, the conveyor belt can be used to transport the object closer to the lifting hoist for easy lifting. Furthermore, the hoist is equipped with a first movable boom, a second movable boom, and a third movable boom, all of which can rotate up and down under the action of the upper support column. The second and third movable booms can also be extended or retracted to accommodate objects at different distances on the conveyor belt, making it highly flexible in use. Simultaneously, a first telescopic support rod is hinged between the upper support column and the first movable boom, forming a first triangular support structure that provides internal support for the first, second, and third movable booms. A second telescopic support rod is hinged to the rotating ring, and the second telescopic support rod is movably connected to the outer end of the third movable boom, forming a second triangular support structure that provides external support for the first, second, and third movable booms, thereby greatly improving the stability of the boom support. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the deck-mounted conveying and placement components and the lifting elevator of the present invention; Figure 3 This is a schematic diagram of the structure of the delivery and placement component and the clamping and pushing component of the present invention; Figure 4 This is a schematic diagram of the rotating support rod and clamping and pushing assembly of the present invention; Figure 5 This is a schematic diagram of the rotating support rod and the elastic side-top assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the hoisting machine of the present invention; Figure 7 This is a partially exploded structural diagram of the hoisting machine of the present invention; In the diagram: Deck 1, Conveying and Placing Assembly 2, Conveyor Belt 21, Rotating Roller 22, Rotating Support Rod 23, Clamping and Pushing Assembly 3, Side Fixing Plate 31, Transmission Rod 32, Reverse Thread 321, Movable Push Plate 33, Transmission Motor 34, Binding Rod 35, Fixing Belt 36, Elastic Side Top Assembly 4, Ball Head 41, Elastic Support Spring 42, Rubber Head Sheath 43, Drive Box 5, Lifting Hoist 6, Base 61, Gear Ring 612, Upper Support 62, Outer Cover 620, Rotating Motor 621, Transmission Gear 622, Rotating Insert Rod 623, First Movable Lifting Rod 63, First Telescopic Rod 631, Second Movable Lifting Rod 64, Second Telescopic Rod 641, Third Movable Lifting Rod 65, Lifting Rigging 66, First Telescopic Support Rod 67, Rotating Ring 68, Second Telescopic Support Rod 681. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] like Figures 1-7As shown, a port vessel includes a deck 1, two conveying and placement assemblies 2 located at the front and rear of the deck 1, and clamping and pushing assemblies 3 located on the left and right sides of the conveying and placement assemblies 2. A crane 6 is movably installed in the middle of the deck 1. The crane 6 can rotate to adjust its position above the conveying and placement assemblies 2 or on the port shore outside the deck 1. Multiple elastic side-support assemblies 4 are also arranged on the left and right sides of the deck 1. When approaching the port shore, the elastic side-support assemblies 4 can provide elastic support and contact with the shore, effectively reducing the rigid contact between the vessel and the port shore. The conveying... The placement assembly 2 includes two rotating rollers 22 rotatably mounted on the front and rear sides of the deck 1, and a conveyor belt 21 is fitted on the two rotating rollers 22. The upper side of the conveyor belt is flush with the upper side of the deck 1. The conveyor belt 21 is used to transport objects back and forth, so that the objects can correspond to the hoisting elevator 6. The deck 1 is equipped with a drive box 5 for driving the rotating rollers 22 to rotate. The drive box 5 is mainly composed of a motor and a transmission gear. A driven gear bonded to the transmission gear is installed on the rotating roller 22. The motor drives the transmission gear, and the transmission gear meshes with the driven gear of the rotating roller 22 to realize the back and forth transport of the conveyor belt 21. The conveyor belt 21 is rotatably supported by multiple rotating support rods 23, which are used to rotate and support the upper side of the conveyor belt 21. Each rotating support rod 23 is rotatably passed through by both ends of the deck 1, which can support the middle of the conveyor belt 21 and prevent objects from sinking downwards when placed on the conveyor belt 21. The rotation of the rotating support rods 23 can greatly reduce the friction with the conveyor belt 21, making the conveyor belt 21 smoother during transport. Moreover, by setting elastic side-support components 4 at the two outer ends of the rotating support rods 23, the elastic side-support components 4 on one side can move to the other side after being subjected to force. The multiple elastic side-support components 4 reduce the hard contact between the sides of the ship and the shore. The length of the elastic side-support components 4 protruding in the middle of the ship gradually decreases to the sides, forming an arranged inclined surface. This allows the elastic side-support components 4 to make more elastic contact with the shore when the ship is docked. The clamping and pushing assembly 3 includes two side plates 31 locked to the upper side of the deck 1, with the conveyor belt 21 located between the two side plates 31. Two transmission rods 32 are rotatably mounted between the two side plates 31, and two movable push plates 33 are inserted through the two transmission rods 32 for clamping objects or pushing objects to the center. Reverse threads 321 are respectively provided on the left and right sides of the transmission rods 32, and the two reverse threads 321 are threadedly connected to the movable push plates 33. A transmission motor 34 is installed on the side plates 31 to drive the transmission rods 32 to rotate. The machine 34 drives the transmission rod 32 to rotate, causing the two reverse threads 321 to drive the movable push plate 33 to move in opposite directions. When the movable push plate 33 moves relative to each other, it can clamp and fix the objects on the left and right sides of the conveyor belt 21, and can push some objects towards the center for limiting. With the binding and restraint of the fixing belt 36, it can greatly improve the stability of the objects on the conveyor belt 21, and facilitate the hoisting of the lifting hoist 6. Moreover, the two transmission rods 32 can also help to limit the objects at the bottom to the front and back on the conveyor belt 21, preventing the objects from falling off and shaking out.

[0018] The elastic side support assembly 4 includes ball heads 41 fixed at both ends of the rotating support rod 23 and elastic support springs 42 sleeved at both ends of the rotating support rod 23. One end of the elastic support spring 42 is pressed against the ball head 41, and the other end is in elastic contact with the side of the deck 1. In this way, the transmission rod 32 can be elastically set on the deck 1 through the action of the elastic support spring 42, which greatly reduces the hard contact between the ship and the port shore. A rubber head sleeve 43 is omnidirectionally sleeved on the ball head 41, which can adapt to the different shapes and uneven surfaces of the port shore, and fully realizes adaptive soft contact. In addition, a binding rod 35 is also side-fixed on the side plate 31, and a fixing strap 36 is connected between the binding rods 35 of the two side plates 31. Buckles can be installed at both ends of the fixing strap 36 and fastened to the binding rods 35 of the two side plates 31 through the buckles. The fixing strap 36 further binds and fixes the object, improving the stability during transportation.

[0019] This embodiment also includes a loading and unloading hoist. The hoist 6 structure includes a base 61 installed on the upper side of the middle of the deck 1 and an upper support column 62 movably mounted on the upper side of the base 61. A first movable boom 63 is rotatably mounted on the upper side of the upper support column 62. The front end of the first movable boom 63 is telescopically embedded with a second movable boom 64. The front end of the second movable boom 64 is telescopically embedded with a third movable boom 65. A first telescopic rod 631 for pushing and pulling the second movable boom 64 is installed on the upper side of the first movable boom 63. A second telescopic rod 641 for pushing and pulling the third movable boom 65 is installed on the upper side of the second movable boom 64. A sling 66 is installed at the outer end of the third movable boom 65. Therefore, when it is necessary to align the sling 66 with the corresponding objects on the upper side of the two conveyor belts 21... The upper support column 62 first rotates to the corresponding upper side of the conveyor belt 21, and then controls the extension and retraction of the second movable lifting rod 64 on the first movable lifting rod 63 through the first telescopic rod 631. The second telescopic rod 641 controls the extension and retraction of the third movable lifting rod 65 on the second movable lifting rod 64. In this way, the lifting sling 66 at the outer end of the third movable lifting rod 65 can quickly extend and retract to the corresponding distance to lift the objects placed on the opposite side of the two conveyor belts 21. When the objects placed on the opposite side of the two conveyor belts 21 are lifted and left empty, if the lifting sling 66 cannot reach the objects at the outer end of the conveyor belt 21, the outer objects can be transported closer to the hoist 6 by rotating the conveyor belt 21 to facilitate its lifting. During the transport of objects, the objects can be displaced along the guide of the two movable push plates 33 to avoid their deviation.

[0020] In the above technical solution, in order to enable the upper support column 62 to rotate stably and over a wide range, three rotating motors 621 are installed in a ring around the outer periphery of the upper support column 62, and each rotating motor 621 has a transmission gear 622 installed on its shaft end. A gear ring 612 is fixedly installed on the upper side of the base 61, and the transmission gear 622 meshes with the gear ring 612. A rotating insert 623 is fixedly provided at the bottom of the upper support column 62, and the rotating insert 623 passes through and rotates through the upper side of the base 61. Therefore, the transmission gear 622 driven by the three rotating motors 621 meshes and rotates synchronously along the gear ring 612, so that the upper support column 62 and the rotating gear 622 can rotate synchronously. The movable rod 623 rotates 360 degrees around the base 61. Furthermore, an outer cover 620 is fixedly provided in the middle of the upper support column 62, and the outer cover 620 covers the outer periphery of each rotating motor 621. This arrangement can improve the protection of the rotating motor 621 and other accessories, and prevent the accessories from being affected by external weather or external forces. At the same time, in order to maintain the stability of the suspension rod when the upper support column 62 rotates, a first telescopic support rod 67 is movably hinged between the upper support column 62 and the first movable suspension rod 63, forming the first triangular support structure. The internal support of the entire suspension rod is achieved through this first triangular support structure. A rotating ring 68 is rotatably mounted in the middle of the base 61. The rotating ring 68 is hinged to a second telescopic support rod 681, which is movably connected to the bottom outer end of the third movable rod 65, forming a second triangular support structure. This second triangular support structure provides external support for the entire rod. Unlike the internal support, the bottom force point of the external support is located on the rotating ring 68 of the base 61. In other words, the rotating ring 68 not only serves to rotate and support the rod, making the connection between the upper support column 62 and the base 61 more stable, but the rotating ring 68 can also rotate with the upper support column 62 to avoid mechanical interference. Furthermore, when the second movable rod 64 and the third movable rod 65 extend and retract, the second telescopic support rod 681 can extend and retract accordingly to ensure that the rod remains horizontal and always forms a stable triangular support structure.

[0021] More specifically, when the ship approaches the port shore, because both sides of the deck 1 are equipped with outwardly protruding elastic side support components 4, the rubber head sleeves 43 of the elastic side support components 4 can first make elastic adaptive contact with the shore, and then be elastically supported by the elastic support springs 42. During support, rotating the support rod 23 will repeatedly move to the other side of the deck 1. After the ship is stable, if it is necessary to hoist port objects onto the conveying and placement components 2 on the ship, the three rotating motors 621 of the hoisting elevator 6 will drive the transmission gears 622 synchronously along the gear ring 612. The meshing rotation allows the upper support column 62 and the rotating insert rod 623 to rotate 360 ​​degrees around the base 61, enabling the first movable lifting rod 63, the second movable lifting rod 64, and the third movable lifting rod 65 to rotate 90 degrees to the objects piled up on the port shore. The objects are then hooked by the wire hooks of the sling 66 and rotated back above the conveyor placement assembly 2 to be placed on the conveyor belt 21. When the objects are placed on the conveyor belt 21, each rotating support rod 23 assists in supporting the upper side of the conveyor belt 21 to prevent it from sinking downwards. When the same row of the conveyor belt 21 is full, it can be driven... The rotating box 5 controls the rotating roller 22 to rotate, causing the two conveyor belts 21 to rotate on opposite sides and create a row of empty spaces. The inner side of the conveyor belt 21 will adhere to the surface of the rotating support rod 23 under the weight of the objects, so the rotating support rod 23 can rotate and provide synchronous support when the conveyor belt 21 rotates. After creating a row of empty spaces on the outer side of the conveyor belt 21, the hoisting elevator 6 rotates and lifts the objects from the shore onto the conveyor belt 21, filling the entire conveyor belt 21 in sequence. After the objects are placed on the conveyor belt 21, the drive motor 34 can drive the drive rod. The rotation of 32 causes the two opposing threads 321 to drive the movable push plate 33 to move in opposite directions. The movable push plate 33 can clamp and fix the objects on the left and right sides of the conveyor belt 21, and can push some objects towards the center for limitation. After the hoisting is completed, it can be used with the binding and restraint of the fixing belt 36 to greatly improve the stability of the objects on the conveyor belt 21 and facilitate the hoisting of the objects by the lifting hoist 6. Moreover, the two transmission rods 32 are also conducive to limiting the objects at the bottom to the front and back on the conveyor belt 21, preventing the objects from being detached and shaken out during the transportation process. When it is necessary to lift objects from conveyor belt 21 to the port shore, the lifting should start from the objects on the opposite side of the two conveyor placement components 2. The upper support 62 first rotates to the corresponding upper side of conveyor belt 21, and then the second movable lifting rod 64 is controlled to extend and retract on the first movable lifting rod 63 by the first telescopic rod 631. The second telescopic rod 641 controls the third movable lifting rod 65 to extend and retract on the second movable lifting rod 64. In this way, the lifting sling 66 at the outer end of the third movable lifting rod 65 can quickly extend and retract to the near or far position of the corresponding object on the conveyor belt for lifting. When the objects placed on the opposite side of the two conveyor belts 21 are lifted and there is no space, since the lifting sling 66 may not be able to reach the objects at the outer end of the conveyor belt 21, the outer objects can be transported closer to the hoisting elevator 6 by rotating the conveyor belt 21 to facilitate its lifting. When the objects are transported by the conveyor belt 21, the objects can also be displaced along the two movable push plates 33 to avoid their deviation. The operation is fast and stable.

[0022] It should be noted that the present invention mainly improves the above-mentioned structure. The functions, components and structures not mentioned can be implemented by using existing components and structures that can achieve the corresponding functions. For example, the first telescopic rod 631, the second telescopic rod 641 and the second telescopic support rod 681 can be controlled by cylinders, hydraulic cylinders or electric telescopic rods in the prior art, so they will not be described in detail here.

[0023] The present invention has been described in detail above through specific embodiments, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A port vessel, characterized in that, It includes a deck (1), two conveying and placing components (2) located at the front and rear of the deck (1), and clamping and pushing components (3) located on the left and right sides of the conveying and placing components (2). A crane (6) is movably installed in the middle of the deck (1). Multiple elastic side-top components (4) are also arranged on the left and right sides of the deck (1); The conveying and placement assembly (2) includes two rotating rollers (22) rotatably mounted on the front and rear sides of the deck (1), and a conveyor belt (21) is sleeved on the two rotating rollers (22). The upper side of the conveyor belt is flush with the upper side of the deck (1). The conveyor belt (21) is used to convey objects forward and backward. The deck (1) is equipped with a drive box (5) for driving the rotating rollers (22) to rotate. The conveyor belt (21) is provided with a plurality of rotating support rods (23) for rotating support on the upper side of the conveyor belt (21) through the middle section, and both ends of each rotating support rod (23) are rotated through the left and right sides of the deck (1). The elastic side top assembly (4) is provided at both ends of each rotating support rod (23). The elastic side-top assembly (4) includes ball heads (41) fixed at both ends of the rotating support rod (23) and elastic support springs (42) sleeved on both ends of the rotating support rod (23), such that one end of the elastic support spring (42) is pressed against the ball head (41) and the other end is in elastic contact with the side of the deck (1). A rubber head sleeve (43) is rotatably sleeved on the ball head (41).

2. A port vessel according to claim 1, characterized in that, The clamping and pushing assembly (3) includes two side plates (31) locked to the upper side of the deck (1), and the conveyor belt (21) is located between the two side plates (31). Two transmission rods (32) are rotatably installed between the two side plates (31), and the two transmission rods (32) are connected through two movable push plates (33) for clamping objects or pushing objects to the center. The left and right sides of the transmission rods (32) are respectively provided with reverse threads (321), and the two reverse threads (321) are respectively threadedly connected to the movable push plates (33). The side plates (31) are equipped with a transmission motor (34) for driving the transmission rods (32) to rotate.

3. A port vessel according to claim 2, characterized in that, The side fixing plate (31) is fixed with a binding rod (35), and a fixing strap (36) is connected between the binding rods (35) of the two side fixing plates (31), so that the object is bound and fixed by the fixing strap (36).

4. A loading and unloading hoist, applied to a port vessel as described in claim 1, characterized in that, The hoist (6) structure includes a base (61) installed on the upper side of the middle of the deck (1) and an upper support (62) movably installed on the upper side of the base (61). A first movable boom (63) is rotatably installed on the upper side of the upper support (62). A second movable boom (64) is telescopically embedded at the front end of the first movable boom (63). A third movable boom (65) is telescopically embedded at the front end of the second movable boom (64). A first telescopic rod (631) for pushing and pulling the second movable boom (64) is installed on the upper side of the first movable boom (63). A second telescopic rod (641) for pushing and pulling the third movable boom (65) is installed on the upper side of the second movable boom (64). A sling (66) is installed at the outer end of the third movable boom (65).

5. A loading and unloading hoist according to claim 4, characterized in that, The upper support column (62) and the first movable hanging rod (63) are movably hinged together by a first telescopic support rod (67), forming the first triangular support structure.

6. A loading and unloading hoist according to claim 5, characterized in that, A rotating ring (68) is rotatably installed in the middle of the base (61). The rotating ring (68) is hinged to a second telescopic support rod (681), and the second telescopic support rod (681) is movably connected to the outer end of the third movable hanging rod (65) to form a second triangular support structure.

7. A loading and unloading hoist according to claim 6, characterized in that, Multiple rotating motors (621) are installed in a ring around the outer periphery of the upper support column (62), and each rotating motor (621) has a transmission gear (622) installed on its shaft end. A gear ring (612) is fixedly installed on the upper side of the base (61), and the transmission gear (622) meshes with the gear ring (612). A rotating insert (623) is fixedly provided at the bottom of the upper support column (62), and the rotating insert (623) is inserted through and rotatably connected to the upper side of the base (61).

8. A loading and unloading hoist according to claim 7, characterized in that, The upper support (62) is fixedly provided with an outer cover (620) in the middle, and the outer cover (620) covers the outer periphery of each rotating motor (621).

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