A hoisting mechanism arranged in a box

Abstract

A hoisting mechanism arranged in a box body is integrated with the box body, comprising a fixed arm, a movable arm reciprocally arranged with the fixed arm, a hoisting device and at least one mounting bracket, wherein the hoisting device is arranged on the movable arm and reciprocally arranged along the length direction of the movable arm; the mounting bracket is spaced and sleeved on the fixed arm and detachably arranged with the box body; the reciprocally arranged movable arm with the fixed arm improves the flexibility of the hoisting operation space; the whole hoisting mechanism is simple in structure and convenient to use, significantly reduces the loading and unloading cost of the shelter, and improves the work efficiency; the hoisting mechanism provided by the application has the characteristics of small size, light weight, fast response, stable transmission, high hoisting precision, strong environmental adaptability, good maintainability, high running efficiency and the like.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting technology, specifically relating to a hoisting mechanism installed inside a box. Background Technology

[0002] A modular shelter is a box-shaped work area with fixed or expandable volume, protective features, and transportability, formed by organically combining various sturdy materials. Similar to shipping containers, its standards are also based on container standards. Depending on the needs, different equipment and devices are loaded. Compared to containers, modular shelters offer higher reliability, electromagnetic compatibility, airtightness, and thermal insulation. Based on whether they are used for military purposes, modular shelters can be divided into military and civilian types. Based on characteristics and functions, they can be divided into bulletproof, mobile, communication, medical, meteorological, and container types. Currently, domestic and international modular shelters can be broadly divided into expandable and non-expandable types. Expandable shelters can be further divided into pull-out and four-panel linkage types based on their structural methods; non-expandable shelters can be divided into four-meter and six-meter shelters, etc. Based on the mode of transportation, they can be divided into road transport and rail transport. Road transport uses right-angle shelters, while rail transport uses angled shelters.

[0003] In existing technologies, modular container trucks typically use on-site loading and unloading equipment such as cranes or forklifts to load and unload packaging boxes. This requires several operators to work on-site to complete the loading and unloading of boxes. It occupies a large amount of auxiliary equipment and personnel at the loading and unloading site, has poor mobility, high loading and unloading costs, high labor intensity, and low work efficiency. Furthermore, using traditional truck-mounted cranes requires a large turning radius and installation space, resulting in low integration with the modular container body and impacting transportation efficiency.

[0004] Therefore, how to design a lifting mechanism that is installed inside the container, improves the integration with the cargo container, effectively reduces the space occupied, improves the mobility of lifting, reduces loading and unloading costs, and improves work efficiency is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a hoisting mechanism installed inside the container. By integrating the hoisting mechanism with the cargo container, it effectively reduces the space occupied by the hoisting mechanism, improves the mobility of hoisting, reduces the loading and unloading cost of the container, and improves work efficiency. It has the characteristics of small size, light weight, fast response, smooth transmission, high hoisting accuracy, strong environmental adaptability, good maintainability, and high operating efficiency.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] A hoisting mechanism housed within a container, integrated with the container body, includes a fixed arm, a movable arm reciprocatingly mounted to the fixed arm, a lifting device, and at least one mounting bracket. The lifting device is mounted on the movable arm and reciprocates along its length. The mounting bracket is detachably mounted on the fixed arm and detachably attached to the container body. Thus, the fixed arm is secured to the container via the mounting bracket, integrating the hoisting mechanism and improving hoisting convenience. The reciprocating movable arm enhances the flexibility of the hoisting workspace. The entire hoisting mechanism is simple in structure, easy to use, significantly reduces the loading and unloading costs of the container, and improves work efficiency. The hoisting mechanism provided in this application features small size, light weight, fast response, smooth transmission, high hoisting accuracy, strong environmental adaptability, good maintainability, and high operating efficiency.

[0008] Furthermore, the fixed arm includes a fixed beam and at least one roller, wherein the fixed beam is welded from a plate and a supporting rib to form a cavity with an internal cavity, and the roller is rotatably disposed inside the fixed beam and spaced apart along the length of the fixed beam.

[0009] Furthermore, the movable arm includes a movable beam, at least one rack, and a moving mechanism, wherein the movable beam is a cavity with an internal receiving cavity formed by welding plate and supporting rib; the rack is fixed inside the movable beam and extends along the length of the movable beam; the fixed end of the moving mechanism is disposed on the fixed arm, and the movable end of the moving mechanism is drivenly connected to the rack.

[0010] Furthermore, the internal storage cavity of the movable beam is divided into a first cavity and a second cavity by a plate, which extend along the length of the movable beam. The first cavity has an opening at the top and racks fixedly installed on the side walls. The second cavity is a cavity with a groove on the bottom. The lifting device is slidably nested inside the second cavity and can reciprocate along the length of the movable beam.

[0011] Furthermore, it also includes at least one limiting wheel that is disposed on the movable beam and rotatably disposed with the movable beam.

[0012] Furthermore, the limiting wheels are disposed on the top surface of the movable beam, including at least one lateral limiting wheel and at least one top limiting wheel. The lateral limiting wheels are disposed on both sides of the movable beam and protrude from the sides of the movable beam; the top limiting wheel is disposed on the end side of the movable beam and protrudes from the top surface of the movable beam.

[0013] Furthermore, the moving mechanism includes a moving drive unit and a moving reset unit, wherein the moving drive unit is fixed on the fixed arm and is drivably connected to the rack; one end of the moving reset unit is fixed on the movable beam, and the other end of the moving reset unit is retractable to the movable end of the moving drive unit.

[0014] Furthermore, the lifting device includes a lifting mounting frame and a lifting drive mechanism, wherein the lifting mounting frame is nested in the internal cavity of the movable arm and is slidably arranged with respect to the movable arm; the lifting drive mechanism is disposed on the lifting mounting frame and is rotatably arranged relative to the lifting mounting frame.

[0015] Furthermore, the hoisting drive mechanism includes a hoisting drive motor, a hoisting reducer, and a winch. The fixed end of the hoisting drive motor is fixed to the hoisting mounting frame, and the movable end of the hoisting drive motor is connected to the winch through the hoisting reducer and they move together. The winch is rotatably fixed to the bottom surface of the hoisting mounting frame.

[0016] Furthermore, it also includes an extension mechanism disposed on the hoisting frame and moving in tandem with the hoisting frame. The extension mechanism includes a trolley base, at least one trolley, and an extension wire. The trolley base is fixedly embedded in the top surface of the hoisting frame. The trolleys are spaced apart on the end sides of the trolley base, and the top surfaces of the trolleys protrude from the side plane of the trolley base. One end of the extension wire is fixed to the trolley base, and the other end, which is disposed opposite to it, is connected to the moving mechanism for driving.

[0017] The hoisting mechanism provided in this embodiment, housed within a box, achieves flexible handling of the hoisting space by setting the fixed end of the moving mechanism to the fixed arm and the movable end to be driven by a rack and pinion on the movable beam. This allows for convenient adjustment of the position between the movable beam and the fixed arm under the drive of the moving mechanism. At least one rotatable limit wheel on the movable beam prevents interference between the movable arm and the fixed arm during movement. A wire pulley on the other end of the limit wheel allows for easy adjustment of the direction of the reset wire, enabling precise control of the movable beam's movement. Guide wheels spaced along the wire's path facilitate adjustment while effectively reducing resistance during movement. The mechanism is mounted on the hoisting frame and connected to... The extended mechanism of the hoisting and installation frame further expands the hoisting operation space. An extended steel wire, fixed at one end by a trolley base and connected to the moving mechanism at the other end, creates tension between the extended steel wire, the moving mechanism, and the fixed arm. Under the movement of the moving mechanism, the trolley base slides reciprocally within the internal cavity of the movable beam. The fixed arm is fixed to the container via an installation bracket, thus integrating the hoisting mechanism into one unit and improving the convenience of hoisting. The movable arm, reciprocating with the fixed arm, enhances the flexibility of the hoisting operation space. The entire hoisting mechanism has a simple structure, is easy to use, significantly reduces the loading and unloading costs of the container, and improves work efficiency. The hoisting mechanism provided in this application features small size, light weight, fast response, smooth transmission, high hoisting accuracy, strong environmental adaptability, good maintainability, and high operating efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hoisting mechanism installed inside the box, as shown in the embodiment.

[0019] Figure 2 This embodiment shows another structural schematic diagram of the hoisting mechanism installed inside the box;

[0020] Figure 3 This is a schematic diagram illustrating the structure of the fixed arm of the hoisting mechanism installed inside the box, as shown in the embodiment.

[0021] Figure 4 This is a schematic diagram illustrating the structure of the movable arm of the hoisting mechanism housed within the housing, as shown in the embodiment.

[0022] Figure 5 This is a schematic diagram illustrating the structure of the lifting device of the hoisting mechanism installed inside the box, as shown in the embodiment.

[0023] Figure 6 This is another structural schematic diagram of the lifting device of the hoisting mechanism installed inside the box, as shown in the embodiment. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that if any directional indication, such as up, down, left, right, front, back, etc., is involved in the embodiments of this utility model, such directional indication is only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. Furthermore, if any description involving "first," "second," "S1," "S2," "step one," "step two," etc., is involved in the embodiments of this utility model, such description is only for descriptive purposes and should not be construed as indicating or implying their relative importance, or implicitly indicating the number of technical features indicated or the execution order of the method. Those skilled in the art will understand that anything that does not violate the essential points of the utility model within the scope of its inventive concept should be included within the protection scope of this utility model.

[0026] like Figure 1 As shown in the illustration, a lifting mechanism installed inside a container is integrated with the container 100. The lifting mechanism includes a fixed arm 10, a movable arm 20 reciprocatingly mounted to the fixed arm 10, a lifting device 30, and at least one mounting bracket 40. The lifting device 30 is mounted on the movable arm 20 and reciprocates along the length of the movable arm 20. The mounting bracket 40 is spaced around the fixed arm 10 and detachably mounted to the container 100. Thus, the fixed arm is fixed to the container via the mounting bracket, thereby integrating the lifting mechanism and improving the ease of lifting. The movable arm, reciprocatingly mounted to the fixed arm, enhances the flexibility of the lifting operation space. The entire lifting mechanism has a simple structure, is easy to use, significantly reduces the loading and unloading costs of the container, and improves work efficiency. The lifting mechanism provided in this application features small size, light weight, fast response, smooth transmission, high lifting accuracy, strong environmental adaptability, good maintainability, and high operating efficiency.

[0027] like Figure 2As shown, the fixed arm 10 can have various suitable structures, as long as it supports convenient telescopic adjustment of the movable arm 20 under the action of the mounting bracket 40. Specifically, the fixed arm 10 includes a fixed beam 11 and at least one roller 12. The fixed beam 11 is welded from plate and supporting ribs to form a cavity with an internal cavity. The rollers 12 are rotatably arranged inside the fixed beam 11 and are spaced apart along the length of the fixed beam 11. Thus, by using a fixed beam with an internal cavity welded from plate and supporting ribs, the movable arm can be well housed in the internal cavity, greatly reducing the space occupied. The rollers arranged inside the fixed beam effectively reduce the frictional resistance between the fixed arm and the movable arm, improving the stability of the lifting mechanism.

[0028] Preferably, such as Figures 2 to 6 As shown, the movable arm 20 includes a movable beam 21, at least one rack 22, and a moving mechanism 24. The movable beam 21 is a cavity with an internal receiving chamber, formed by welding plate and supporting ribs. The rack 22 is fixed inside the movable beam 21 and extends along the length of the movable beam 21. The fixed end of the moving mechanism 24 is disposed on the fixed arm 10, and the movable end of the moving mechanism 24 is drivenly connected to the rack 22. Thus, by setting the fixed end of the moving mechanism on the fixed arm and drivingly connecting the movable end to the rack disposed on the movable beam, the position adjustment between the movable beam and the fixed arm can be easily realized under the drive of the moving mechanism, thereby achieving flexible handling of the hoisting space.

[0029] Specifically, such as Figure 6 As shown, in order to ensure the stability and reliability of operation, the internal storage cavity of the movable beam 21 is divided into a first cavity 211 and a second cavity 212 extending along the length of the movable beam 21 by a plate. The first cavity 211 is open at the top and has racks 22 fixedly installed on both side walls. The second cavity 212 is a cavity with a groove on the bottom surface. The lifting device 30 is slidably nested inside the second cavity 212 and can reciprocate along the length of the movable beam 21.

[0030] Optionally, such as Figure 4 As shown, to avoid interference between the movable arm and the fixed arm during movement, at least one limiting wheel 23 is also included, which is rotatably disposed on the movable beam 21. Preferably, the limiting wheel 23 is disposed at one end of the movable beam 21 near the fixed arm 10. Specifically, the limiting wheel 23 is disposed on the top surface of the movable beam 21, including at least one lateral limiting wheel 231 and at least one top limiting wheel 232. The lateral limiting wheels 231 are disposed on both sides of the movable beam 21 and protrude from the sides of the movable beam 21; the top limiting wheel 232 is disposed on the end side of the movable beam 21 and protrudes from the top surface of the movable beam 21.

[0031] Optionally, to reduce the space occupied by the hoisting mechanism when integrated within the container and to increase the effective space for container transport, the moving mechanism 24 is located between the fixed arm 10 and the container body 100. Specifically, the moving mechanism 24 includes a moving drive unit 241 and a moving reset unit 242. The moving drive unit 241 is fixed to the fixed arm 10 and is drivably connected to the rack 22. One end of the moving reset unit 242 is fixed to the movable beam 21, and the other end, which is opposite to it, is retractable to the movable end of the moving drive unit 241. Thus, through the retractable moving reset unit connected to the moving drive unit, the movable beam can extend or retract relative to the fixed beam very conveniently, thereby achieving reciprocating linear motion relative to the fixed arm.

[0032] Specifically, such as Figure 3 As shown, the moving drive unit 241 includes a horizontal drive motor 2411, a horizontal reducer 2412, and a drive gear 2413. The fixed end of the horizontal drive motor 2411 is mounted on the fixed arm 10, and the movable end of the horizontal drive motor 2411 is driven by the horizontal reducer 2412 and the drive gear 2413. The drive gear 2413 is sandwiched between and meshes with the rack 22. Thus, the horizontal drive motor drives the drive gear to rotate via the horizontal reducer, and the meshing action with the rack drives the movable arm.

[0033] Preferably, to achieve precise control over the extension distance of the movable arm, the horizontal reducer 2412 is a worm gear reducer. Thus, the self-locking property of the worm gear reducer enables the extension distance of the movable arm to be self-locking. Furthermore, to enhance more flexible control, a hand-cranked interface 2414 is included, which is drivable from the horizontal reducer 2412 and is located on the opposite side of the horizontal drive motor 2411.

[0034] Optionally, the movable reset unit 242 includes a reset wire 2421 and at least one wire pulley 2422, wherein the wire pulleys 2422 are spaced apart along the travel direction of the reset wire 2421; one end of the reset wire 2421 is retractably connected to the movable drive unit 241, and the other end, which is opposite to it, is fixed to the movable beam 21 after its direction is adjusted by the wire pulley 2422. Preferably, the wire pulley 2422 is provided on the end side of the movable beam 21 away from the limiting wheel 23; thus, by using the wire pulley provided on the other end side of the limiting wheel, the travel direction of the reset wire can be easily adjusted to achieve precise control of the movement direction of the movable beam.

[0035] In summary, the movable arm provided in this application, by setting the fixed end of the moving mechanism on the fixed arm and driving the moving end to a rack and pinion on the movable beam, allows for extremely convenient adjustment of the position between the movable beam and the fixed arm under the drive of the moving mechanism, thereby achieving flexible handling of the lifting space. At least one limiting wheel, rotatably mounted on the movable beam, prevents interference between the movable arm and the fixed arm during movement. A wire pulley on the other end of the limiting wheel allows for convenient adjustment of the direction of the reset wire, enabling precise control of the movable beam's movement direction. Guide wheels spaced along the wire's path facilitate adjustment of the wire's path while effectively reducing resistance during movement.

[0036] Optionally, such as Figure 5 As shown, the lifting device 30 includes a lifting mounting frame 31 and a lifting drive mechanism 32. The lifting mounting frame 31 is nested within the internal cavity of the movable arm 20 and is slidably arranged with respect to the movable arm 20. The lifting drive mechanism 32 is mounted on the lifting mounting frame 31 and is rotatably arranged relative to the lifting mounting frame 31. Specifically, the lifting drive mechanism 32 is located on the bottom end face of the lifting mounting frame 31. Specifically, the lifting drive mechanism 32 includes a lifting drive motor 321, a lifting reducer 322, and a winch 323. The fixed end of the lifting drive motor 321 is fixed to the lifting mounting frame 31, and the movable end of the lifting drive motor 321 is connected to the winch 323 through the lifting reducer 322 and moves together. The winch 323 is rotatably fixed to the bottom end face of the lifting mounting frame 31.

[0037] Preferably, to further expand the space for hoisting operations, an extension mechanism 33 is also included, which is mounted on the hoisting mounting frame 31 and moves in tandem with the hoisting mounting frame 31. Furthermore, the extension mechanism 33 is mounted on the top surface of the hoisting mounting frame 31 and is slidably mounted with the movable beam 21.

[0038] In a preferred embodiment of this application, such as Figure 2 and Figure 5As shown, the extension mechanism 33 includes a trolley base 331, at least one trolley 332, and an extension wire 333. The trolley base 331 is fixedly embedded in the top surface of the hoisting frame 31. The trolleys 332 are spaced apart on the end sides of the trolley base 331, and the top surface of the trolleys 332 protrudes from the side plane of the trolley base 331. One end of the extension wire 333 is fixed to the trolley base 331, and the other end is connected to the moving mechanism 24 for driving. Thus, by fixing one end of the extension wire to the trolley base and driving the other end to the moving mechanism, the extension wire is pulled between the moving mechanism and the fixed arm. Then, under the movement of the moving mechanism, the trolley base is driven to slide back and forth in the internal cavity of the movable beam. Specifically, the trolley base 331 is slidably embedded in the second cavity 212 of the movable beam 21, the trolley 332 is disposed between the trolley base 331 and the second cavity 212, one end of the extended steel wire 333 is fixed on the trolley base 331, and the other end is connected to the horizontal drive motor 2411 of the moving drive unit 241 for driving; then, driven by the horizontal drive motor 2411, the trolley base 331, together with the hoisting drive mechanism 32, can slide back and forth along the length direction of the movable beam 21.

[0039] Preferably, in order to facilitate the adjustment of the travel path of the extension wire while effectively reducing the resistance of the wire during movement, the extension mechanism 33 further includes at least one extension pulley 334 spaced along the travel path of the extension wire 333. Furthermore, to facilitate a stable force relationship with the fixed arm 10, at least one wire fixing seat 335 is provided on the fixed arm 10, and the wire fixing seats 335 are spaced along the travel path of the extension wire 333.

[0040] In summary, the lifting device provided in this application further expands the lifting operation space by setting an extension mechanism on the lifting frame and moving in tandem with the lifting frame; by fixing one end of the trolley base and driving the other end of the extension steel wire to the moving mechanism, the extension steel wire is pulled together with the moving mechanism and the fixed arm, and then the movement of the moving mechanism drives the trolley base to slide back and forth in the internal cavity of the movable beam.

[0041] Furthermore, the drive motor in the embodiments of this application can also be other suitable forms, such as a servo motor or a stepper motor. No specific limitation is made here, as long as the corresponding function is met.

[0042] In summary, the hoisting mechanism provided in this embodiment, housed within a box, achieves highly convenient positional adjustment between the movable beam and the fixed arm by setting the fixed end of the moving mechanism to the fixed arm and driving the movable end to a rack and pinion mounted on the movable beam. This allows for flexible handling of the hoisting space. At least one rotatable limit wheel mounted on the movable beam prevents interference between the movable arm and the fixed arm during movement. A wire pulley on the other end of the limit wheel allows for easy adjustment of the return wire's travel direction, enabling precise control of the movable beam's movement. Guide wheels spaced along the wire's travel path facilitate adjustment while effectively reducing resistance during movement. The hoisting mechanism also allows for flexible handling of the hoisting space. The extension mechanism, which moves in tandem with the hoisting frame, further expands the hoisting operation space. An extension steel wire, fixed at one end by a trolley base and connected to the moving mechanism at the other, creates tension between the extension steel wire, the moving mechanism, and the fixed arm. Under the movement of the moving mechanism, the trolley base slides reciprocally within the internal cavity of the movable beam. The fixed arm is fixed to the container via a mounting bracket, thus integrating the hoisting mechanism into one unit and improving the convenience of hoisting. The movable arm, which moves reciprocally with the fixed arm, enhances the flexibility of the hoisting operation space. The entire hoisting mechanism has a simple structure, is easy to use, significantly reduces the loading and unloading costs of the container, and improves work efficiency. The hoisting mechanism provided in this application features small size, light weight, fast response, smooth transmission, high hoisting accuracy, strong environmental adaptability, good maintainability, and high operating efficiency.

[0043] The above description is merely a specific embodiment of this utility model. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should all be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hoisting mechanism disposed within a container, characterized in that, Integrated with the housing (100), it includes a fixed arm (10), a movable arm (20) that is reciprocally movable with the fixed arm (10), a lifting device (30), and at least one mounting bracket (40). The lifting device (30) is mounted on the movable arm (20) and is reciprocally movable along the length of the movable arm (20). The mounting bracket (40) is spaced around the fixed arm (10) and is detachably mounted with respect to the housing (100).

2. The hoisting mechanism according to claim 1, characterized in that, The fixed arm (10) includes a fixed beam (11) and at least one roller (12). The fixed beam (11) is made of plate and supporting rib welded together to form a cavity with an internal cavity. The roller (12) is rotatably arranged inside the fixed beam (11) and is spaced apart along the length of the fixed beam (11).

3. The hoisting mechanism according to claim 1, characterized in that, The movable arm (20) includes a movable beam (21), at least one rack (22) and a moving mechanism (24). The movable beam (21) is a cavity with an internal receiving cavity, which is welded from a plate and a supporting rib. The rack (22) is fixed inside the movable beam (21) and extends along the length of the movable beam (21). The fixed end of the moving mechanism (24) is set on the fixed arm (10), and the movable end of the moving mechanism (24) is drivenly connected to the rack (22).

4. The hoisting mechanism according to claim 3, characterized in that, The internal storage cavity of the movable beam (21) is divided into a first cavity (211) and a second cavity (212) extending along the length of the movable beam (21) by a plate. The first cavity (211) has an open top and racks (22) fixedly installed on both side walls. The second cavity (212) is a cavity with a groove on the bottom surface. The lifting device (30) is slidably nested inside the second cavity (212) and can reciprocate along the length of the movable beam (21).

5. The hoisting mechanism according to claim 3, characterized in that, It also includes at least one limiting wheel (23) disposed on the movable beam (21) and rotatably disposed with the movable beam (21).

6. The hoisting mechanism according to claim 5, characterized in that, The limiting wheel (23) is disposed on the top surface of the movable beam (21), including at least one side limiting wheel (231) and at least one top limiting wheel (232). The side limiting wheel (231) is disposed on both sides of the movable beam (21) and protrudes from the side of the movable beam (21). The top limiting wheel (232) is disposed on the end side of the movable beam (21) and protrudes from the top surface of the movable beam (21).

7. The hoisting mechanism according to claim 3, characterized in that, The moving mechanism (24) includes a moving drive unit (241) and a moving reset unit (242). The moving drive unit (241) is fixed on the fixed arm (10) and is drivably connected to the rack (22). One end of the moving reset unit (242) is fixed on the movable beam (21), and the other end is retractable to the movable end of the moving drive unit (241).

8. The hoisting mechanism according to claim 1, characterized in that, The lifting device (30) includes a lifting mounting frame (31) and a lifting drive mechanism (32), wherein the lifting mounting frame (31) is nested in the internal cavity of the movable arm (20) and is slidably arranged with respect to the movable arm (20); the lifting drive mechanism (32) is arranged on the lifting mounting frame (31) and is rotatably arranged relative to the lifting mounting frame (31).

9. The hoisting mechanism according to claim 8, characterized in that, The hoisting drive mechanism (32) includes a hoisting drive motor (321), a hoisting reducer (322), and a winch (323). The fixed end of the hoisting drive motor (321) is fixed on the hoisting mounting frame (31), and the movable end of the hoisting drive motor (321) is connected to the winch (323) through the hoisting reducer (322) and they move together. The winch (323) is rotatably fixed on the bottom surface of the hoisting mounting frame (31).

10. The hoisting mechanism according to claim 8, characterized in that, It also includes an extension mechanism (33) disposed on the hoisting mounting frame (31) and moving together with the hoisting mounting frame (31). The extension mechanism (33) includes a trolley base (331), at least one trolley (332), and an extension wire (333). The trolley base (331) is fixedly embedded in the top surface of the hoisting mounting frame (31). The trolleys (332) are spaced apart on the end sides of the trolley base (331), and the top surface of the trolleys (332) protrudes from the side plane of the trolley base (331). One end of the extension wire (333) is fixed on the trolley base (331), and the other end is connected to the moving mechanism (24) for driving.

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