Multifunctional crane

Abstract

The invention discloses a multifunctional crane, and relates to the field of cranes, the multifunctional crane comprises a base, the bottom surface of the base is provided with a support frame, the bottom end of the support frame is provided with an electric drive footing, the top surface of the base is provided with a cargo boom, the tail end of the cargo boom is provided with a rotary beam, and the outer wall of the rotary beam is provided with a crane mechanism; the rotary beam comprises a top plate, a deflection mechanism and a cross beam. Through cooperative use of the top plate of the rotary beam, the deflection mechanism and the cross beam, horizontal adjustment of the lifting appliance is achieved, the operation coverage range is expanded, the movable assembly is matched to drive the fixing frame to slide along the outer wall of the cross beam, transverse translation of the lifting hook is achieved, and operation points within the length range of the cross beam can be covered without adjustment of the angle of the cargo boom; the single-time hoisting process time is shortened, and the single-time hoisting efficiency is improved; the safety tongs serve as emergency braking parts and can be quickly locked when the moving assembly is out of control, the traveling mechanism is prevented from sliding off the cross beam, and the risk of falling and sliding accidents of the lifting appliance is reduced.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically to a multi-functional crane. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. The working characteristic of lifting equipment is that it performs intermittent movements, that is, the corresponding mechanisms for actions such as picking up, moving, and unloading materials work alternately in a work cycle. Cranes are becoming more and more widely used in the market.

[0003] For example, CN113636479A discloses a multi-functional crane, including a first clamping arm, which is rotatably connected to a fixed base. A third hydraulic cylinder is hinged between the first clamping arm and the fixed base. A second clamping arm is rotatably connected to one end of the first clamping arm. A fourth hydraulic cylinder is hinged between the first clamping arm and the second clamping arm. A first clamping rod and a second clamping rod are provided at one end of the second clamping arm. A clamping spring is fixedly connected between the first clamping rod and the second clamping rod. A connecting seat is fixedly connected to one side of the first clamping rod. An elastic rope is provided between the connecting seat and the fixed base.

[0004] However, in the existing technology, the lifting arm of traditional cranes is mostly a single-section or two-section structure, with limited operating radius and height adjustment range. Moreover, the lifting arm angle adjustment relies on a single hydraulic cylinder, which cannot achieve multi-dimensional precise control. The operation coverage and precision control are insufficient, which can easily cause the lifting equipment to sway during the lifting process. When performing precision lifting, repeated adjustments are required, resulting in long lifting cycles and low efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-functional crane to solve the problems mentioned in the background art, such as the fact that the lifting arm of traditional cranes is mostly a single or two-section structure, with limited working radius and height adjustment range, and the lifting arm angle adjustment relies on a single hydraulic cylinder, which cannot achieve multi-dimensional precise control, insufficient work coverage and precision control, easy swaying of the lifting device during the lifting process, repeated adjustments required during precision lifting, and long lifting cycle and low efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-functional crane, comprising a base, a support frame mounted on the bottom surface of the base, an electrically driven foot mounted on the bottom end of the support frame, a lifting boom mounted on the top surface of the base, a slewing beam mounted at the end of the lifting boom, a traveling mechanism mounted on the outer wall of the slewing beam, the slewing beam comprising a top plate, a deflection mechanism, and a crossbeam, the deflection mechanism being fixedly mounted on the outer wall of the end of the support frame, the top plate being rotatably mounted on the bottom surface of the deflection mechanism, the deflection mechanism controlling the horizontal rotation of the crossbeam, and the crossbeam being fixedly connected to the top plate. On the bottom surface of the plate, the traveling mechanism includes a fixed frame, a safety clamp, a hook, a moving component, a fixed block, a pulley, a steel rope, a stranded wheel, and a motor. The fixed frame is fixedly connected to the bottom surface of the moving component, the moving component is movably connected to the outer wall of the crossbeam, the safety clamp is installed on the end face of the moving component, the stranded wheel is rotatably connected to the inner wall of the fixed frame, the fixed block is fixedly connected to the outer wall of the fixed frame, one end of the steel rope is wound around the outer wall of the stranded wheel, and the other end of the steel rope passes through the inside of the pulley and is fixedly connected to the fixed block. The hook is installed on the outer wall of the pulley, the motor is installed on the outer wall of the fixed frame, and the output shaft end of the motor is drivenly connected to the stranded wheel.

[0007] Preferably, the deflection mechanism includes a housing, a motor, a worm, and a worm wheel. The worm wheel is rotatably connected to the inner wall of the housing, the motor is mounted on the side wall of the housing, the worm is rotatably mounted on the inner wall of the housing, the worm and the worm wheel are connected by a transmission, and the output shaft end of the motor is fixedly connected to one end of the worm.

[0008] Preferably, a connecting shaft is fixedly connected to the center of the top surface of the top plate, and the top end of the connecting shaft is inserted into the inner wall of the worm gear.

[0009] Preferably, the bottom surface of the crossbeam is provided with a movable groove, the inner wall of the movable groove is fixedly connected to a brake plate, and the actuating end of the safety clamp is sleeved on the outer wall of the brake plate.

[0010] Preferably, gyroscopes are fixedly installed on the outer walls of both ends of the crossbeam, and cameras are installed at the four corners of the bottom surface of the top plate.

[0011] Preferably, the lifting boom includes a main boom, a hydraulic cylinder, a slewing base, and a forearm. The bottom end of the main boom is rotatably connected to the side wall of the slewing base. The bottom end of the hydraulic cylinder is rotatably connected to the top surface of the slewing base. The top end of the extension rod of the hydraulic cylinder is rotatably connected to the outer wall of the main boom. One end of the forearm is rotatably connected to the top end of the main boom. The slewing base is installed on the top surface of the base.

[0012] Preferably, the lifting arm further includes a second hydraulic cylinder, a third hydraulic cylinder, and a connecting seat. The connecting seat is rotatably connected to the other end of the forearm. The deflection mechanism is fixedly installed on the bottom surface of the connecting seat. The bottom end of the third hydraulic cylinder is movably installed on the inner wall of the boom. The top end of the telescopic rod of the third hydraulic cylinder is rotatably connected to the inner wall of the forearm end. One end of the second hydraulic cylinder is rotatably connected to the inner wall of the forearm, and one end of the telescopic rod of the second hydraulic cylinder is rotatably connected to the outer wall of the connecting seat.

[0013] Preferably, the moving component includes a base plate, a second motor, moving wheels, and a fixed support plate. The fixed frame is fixedly connected to the bottom surface of the base plate. The fixed support plate has four parts respectively installed on the outer walls of both ends of the base plate. The second motor is installed on the outer wall of the fixed support plate. The moving wheels are rotatably connected to the top of the second motor and are rotatably connected in the groove of the side wall of the crossbeam. The output end of the second motor is connected to the moving wheels via a transmission.

[0014] Preferably, the electric drive base includes a base frame, a connecting frame, a reducer, a motor, and a base drive wheel. The base frame is fixedly installed at the bottom end of the support frame, the connecting frame is fixedly connected to the bottom end of the base frame, and the base drive wheel is rotatably connected to the inner wall of the connecting frame.

[0015] Preferably, the reducer is mounted on the side wall of the connecting frame, the motor is mounted on the side wall of the reducer, the output shaft of the motor is fixedly connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the base drive wheel.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the top plate of the slewing beam, the deflection mechanism and the crossbeam work together to achieve horizontal adjustment of the lifting device, expand the working coverage area, and with the help of the moving component, the fixed frame can slide along the outer wall of the crossbeam to achieve lateral translation of the hook. The working points within the length of the crossbeam can be covered without adjusting the angle of the lifting arm, shortening the single lifting process time and improving the single lifting efficiency. The safety clamp, as an emergency braking component, can quickly lock when the moving component is out of control to prevent the traveling mechanism from slipping off the crossbeam and reduce the risk of lifting device falling.

[0017] 2. In this invention, the tilt of the beam is detected in real time by the gyroscope of the slewing beam. When the tilt exceeds the threshold, an alarm is triggered immediately. At the same time, the worm gear transmission of the deflection mechanism has self-locking properties, which can fix the beam angle and prevent external force deflection. In conjunction with the safety clamp of the traveling mechanism, the brake plate can be clamped immediately when the moving component is out of control, shortening the braking distance and effectively suppressing the sway of the lifting device. Meanwhile, the four cameras on the bottom of the top plate are stitched together to form a 360° panoramic view, allowing operators to clearly observe personnel and obstacles below the lifting device and on both sides of the beam. Full field of view monitoring eliminates blind spot hazards and improves the safety of lifting and hoisting operations.

[0018] 3. In this invention, the rotation angle of the boom around the slewing seat can be controlled by the extension and retraction of hydraulic cylinder one to meet the lifting requirements of different heights. Hydraulic cylinder three drives the forearm to rotate relative to the boom, which can further extend the working radius. Hydraulic cylinder two adjusts the angle of the connecting seat to ensure that the slewing beam always remains horizontal and avoids the lifting device tilting due to changes in the angle of the lifting boom. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a multi-functional crane according to the present invention; Figure 2 This is a schematic diagram of the connection structure of a multifunctional crane boom according to the present invention; Figure 3 This invention relates to a multi-functional crane. Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of a multifunctional crane beam according to the present invention; Figure 5 This is a schematic diagram of the internal structure of a multifunctional crane deflection mechanism according to the present invention; Figure 6 This is a schematic diagram of the connection structure of a multifunctional crane beam according to the present invention; Figure 7 This is a schematic diagram of the structure of a multifunctional crane electric drive base according to the present invention.

[0020] In the diagram: 1. Base; 2. Support frame; 3. Lifting boom; 31. Main boom; 32. Hydraulic cylinder one; 33. Slewing seat; 34. Forearm; 35. Hydraulic cylinder two; 36. Hydraulic cylinder three; 37. Connecting seat; 4. Slewing beam; 41. Top plate; 411. Connecting shaft; 42. Deflection mechanism; 421. Housing; 422. Motor one; 423. Worm gear; 424. Worm wheel; 43. Crossbeam; 44. Movable groove; 45. Brake plate; 46. Camera 47. Head; 5. Gyroscope; 6. Traveling mechanism; 7. Fixed frame; 8. Safety clamp; 9. Hook; 10. Moving component; 11. Base plate; 12. Motor II; 13. Moving wheel; 14. Fixed support plate; 15. Fixed block; 16. Pulley; 17. Steel rope; 18. Stranded wheel; 19. Motor III; 20. Electric drive base; 21. Base frame; 32. Connecting frame; 43. Reducer; 54. Motor IV; 55. Base drive wheel. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Refer to Figure 1 - Figure 7 As shown: A multi-functional crane includes a base 1, a support frame 2 mounted on the bottom surface of the base 1, an electrically driven foot 6 mounted on the bottom end of the support frame 2, a lifting boom 3 mounted on the top surface of the base 1, a slewing beam 4 mounted at the end of the lifting boom 3, and a traveling mechanism 5 mounted on the outer wall of the slewing beam 4. The slewing beam 4 includes a top plate 41, a deflection mechanism 42, and a crossbeam 43. The deflection mechanism 42 is fixedly mounted on the outer wall of the end of the support frame 2, and the top plate 41 is rotatably mounted on the bottom surface of the deflection mechanism 42. The deflection mechanism 42 controls the horizontal rotation of the crossbeam 43, and the crossbeam 43 is fixedly connected to the bottom surface of the top plate 41. The traveling mechanism 5 includes a fixed frame 51, a safety clamp 52, a hook 53, and a moving... The moving component 54, fixed block 55, pulley 56, steel rope 57, stranded wheel 58, and motor 59 are included. The fixed frame 51 is fixedly connected to the bottom surface of the moving component 54, and the moving component 54 is movably connected to the outer wall of the crossbeam 43. The safety clamp 52 is installed on the end face of the moving component 54. The stranded wheel 58 is rotatably connected to the inner wall of the fixed frame 51. The fixed block 55 is fixedly connected to the outer wall of the fixed frame 51. One end of the steel rope 57 is wound around the outer wall of the stranded wheel 58, and the other end of the steel rope 57 passes through the inside of the pulley 56 and is fixedly connected to the fixed block 55. The hook 53 is installed on the outer wall of the pulley 56. The motor 59 is installed on the outer wall of the fixed frame 51, and the output shaft end of the motor 59 is connected to the stranded wheel 58 for transmission.

[0023] In this embodiment, the electric-driven base 6 replaces the traditional fixed base, enabling the crane to move autonomously over short distances. The boom 3 serves as the core of force transmission, and its end slewing beam 4, through the cooperation of the top plate 41, deflection mechanism 42, and crossbeam 43, allows for horizontal adjustment of the lifting device, expanding the operational coverage area. The motor 3 59 drives the winch 58 to wind the steel rope 57, and the transmission of the pulley 56 precisely controls the lifting speed of the hook 53, making it suitable for precision lifting scenarios such as electronic components and glass curtain walls. The moving component 54 can drive the fixed frame 51 to slide along the outer wall of the crossbeam 43, enabling the hook 53 to move laterally. This allows for coverage of the work points within the length of the crossbeam 43 without adjusting the angle of the boom 3, improving the efficiency of a single lifting operation. The safety clamp 52, as an emergency braking component, can quickly lock when the moving component 54 loses control, preventing the traveling mechanism 5 from slipping off the crossbeam 43 and reducing the risk of the lifting device falling.

[0024] Example 2: Figure 2 - Figure 5As shown, the deflection mechanism 42 includes a housing 421, a motor 422, a worm gear 423, and a worm wheel 424. The worm wheel 424 is rotatably connected to the inner wall of the housing 421. The motor 422 is mounted on the side wall of the housing 421. The worm gear 423 is rotatably mounted on the inner wall of the housing 421. The worm gear 423 is connected to the worm wheel 424 in a transmission connection. The output shaft end of the motor 422 is fixedly connected to one end of the worm gear 423. A connecting shaft 411 is fixedly connected to the center of the top surface of the top plate 41. The top end of the connecting shaft 411 is inserted into the inner wall of the worm wheel 424. A movable groove 44 is opened on the bottom surface of the crossbeam 43. A brake plate 45 is fixedly connected to the inner wall of the movable groove 44. The execution end of the safety clamp 52 is sleeved on the outer wall of the brake plate 45. Gyroscopes 47 are fixedly installed on the outer walls of both ends of the crossbeam 43. Cameras 46 are installed at the four corners of the bottom surface of the top plate 41.

[0025] In this embodiment, the deflection mechanism 42 achieves smooth rotation of the crossbeam 43. The high-speed rotation output by the motor 422 is transmitted through the worm gear 423, and the worm wheel 424 drives the connecting shaft 411 to rotate slowly, preventing the crossbeam 43 from swaying due to excessive rotation. At the same time, the self-locking function of the worm wheel 424 can fix the angle of the crossbeam 43 when the motor 422 stops, preventing the crossbeam 43 from deflecting unexpectedly due to external forces. The movable groove 44 on the bottom surface of the crossbeam 43 cooperates with the brake plate 45 and the safety clamp 52 to form a double braking system: when the moving component 54 needs emergency braking... When stopped, the actuator of the safety clamp 52 clamps the brake plate 45, using friction to brake quickly. The gyroscopes 47 at both ends of the crossbeam 43 can detect the tilt angle of the crossbeam 43 in real time. If the crossbeam 43 tilts beyond the safety threshold due to uneven load or uneven ground, the system will immediately trigger an alarm and stop the operation, thereby preventing the lifting equipment from swaying. The four cameras 46 on the bottom surface of the top plate 41 can be stitched together to form a 360° panoramic view, eliminating the blind spot under the traditional crane lifting. The operator can clearly observe the distance between the lifting equipment and surrounding obstacles, reducing the collision accident rate.

[0026] Example 3: According to Figure 2 and Figure 6As shown, the lifting boom 3 includes a main boom 31, a first hydraulic cylinder 32, a slewing seat 33, and a forearm 34. The bottom end of the main boom 31 is rotatably connected to the side wall of the slewing seat 33. The bottom end of the first hydraulic cylinder 32 is rotatably connected to the top surface of the slewing seat 33, and the top end of the telescopic rod of the first hydraulic cylinder 32 is rotatably connected to the outer wall of the main boom 31. One end of the forearm 34 is rotatably connected to the top end of the main boom 31. The slewing seat 33 is mounted on the top surface of the base 1. The lifting boom 3 also includes a second hydraulic cylinder 35, a third hydraulic cylinder 36, and a connecting seat 37. The connecting seat 37 is rotatably connected to the other end of the forearm 34. The deflection mechanism 42 is fixedly mounted on the bottom surface of the connecting seat 37. The bottom end of the third hydraulic cylinder 36 is movably mounted on the inner wall of the main boom 31. The telescopic rod of the third hydraulic cylinder 36... The top end is rotatably connected to the inner wall of the forearm 34. One end of the second hydraulic cylinder 35 is rotatably connected to the inner wall of the forearm 34. One end of the telescopic rod of the second hydraulic cylinder 35 is rotatably connected to the outer wall of the connecting seat 37. The moving component 54 includes a base plate 541, a second motor 542, a moving wheel 543, and a fixed support plate 544. The fixed frame 51 is fixedly connected to the bottom surface of the base plate 541. The fixed support plate 544 has four parts respectively installed on the outer walls of both ends of the base plate 541. The second motor 542 is installed on the outer wall of the fixed support plate 544. The moving wheel 543 is rotatably connected to the top end of the second motor 542. The moving wheel 543 is rotatably connected to the groove on the side wall of the crossbeam 43. The output end of the second motor 542 is connected to the moving wheel 543 for transmission.

[0027] In this embodiment, the multi-segment structure of the boom 31, forearm 34, and connecting seat 37, combined with the driving action of hydraulic cylinders 32, 35, and 36, achieves flexible coverage of the working range: the extension and retraction of hydraulic cylinder 32 controls the rotation angle of the boom 31 around the slewing seat 33, meeting the lifting requirements at different heights; hydraulic cylinder 36 drives the forearm 34 to rotate relative to the boom 31, further extending the working radius; hydraulic cylinder 35 adjusts the angle of the connecting seat 37 to ensure that the slewing beam 4 always remains horizontal, avoiding tilting of the lifting device due to changes in the angle of the boom 3; and the base plate 541 and four of the moving assembly 54 are used to achieve this. The combination of fixed support plate 544 and moving wheel 543 significantly improves the stability of the traveling mechanism 5. The fixed support plate 544 is symmetrically distributed at both ends of the base plate 541, which restricts the moving wheel 543 in the side wall groove of the crossbeam 43 to prevent the moving wheel 543 from derailing. The motor 542 directly drives the moving wheel 543 to rotate. The moving speed can be adjusted by frequency conversion control to adapt to different working conditions such as light load fast movement or heavy load slow precise positioning. The slewing seat 33 allows the lifting arm 3 to rotate around the top surface of the base 1, further expanding the overall working coverage area of ​​the machine. The surrounding area can be hoisted without frequent adjustment of the position of the base 1.

[0028] Example 4: According to Figure 7As shown, the electric drive base 6 includes a base frame 61, a connecting frame 62, a reducer 63, a motor 64, and a base drive wheel 65. The base frame 61 is fixedly installed at the bottom end of the support frame 2, the connecting frame 62 is fixedly connected to the bottom end of the base frame 61, the base drive wheel 65 is rotatably connected to the inner wall of the connecting frame 62, the reducer 63 is installed on the side wall of the connecting frame 62, the motor 64 is installed on the side wall of the reducer 63, the output shaft end of the motor 64 is fixedly connected to the input shaft of the reducer 63, and the output shaft of the reducer 63 is connected to the base drive wheel 65 for transmission.

[0029] In this embodiment, the motor 64 provides power, and the speed is reduced and the torque is increased by the reducer 63, so that the base drive wheel 65 can obtain sufficient driving force on the track. At the same time, the reducer 63 can precisely control the speed of the base drive wheel 65, ensuring that the crane moves smoothly when it is moved and preventing the base 1 from shaking due to excessive speed. The rigid connection between the base frame 61 and the connecting frame 62 makes the electric drive base 6 and the support frame 2 form a stable whole. The base frame 61 is made of high-strength steel, which can bear the weight of the whole machine and avoid deformation after long-term use.

[0030] The operation and working principle of this device: Relocation stage: Start motor 4 (64), which drives the base drive wheel 65 to rotate via reducer 63, controlling the crane to move to the work point; upon arrival, adjust the support height of the electric drive base 6 via support frame 2 to keep the base 1 level, completing the overall machine fixation; Work preparation: According to the lifting height and radius, start hydraulic cylinder 1 (32) to adjust the boom 31 elevation angle, hydraulic cylinder 36 to control the extension length of the forearm 34, and hydraulic cylinder 2 (35) to adjust the angle of the connecting seat 37 to ensure the slewing beam 4 is level; simultaneously start motor 1 (422), which drives the crossbeam 43 to rotate in the lifting direction via worm gear 423-worm wheel 424; Lifting execution: Start... Motor 2 542 drives the moving component 54 to slide along the crossbeam 43, moving the hook 53 directly above the load; Motor 3 59 is started, driving the winch 58 to release the steel rope 57, causing the hook 53 to descend and hook the load; Motor 3 59 is started in reverse to wind up the steel rope 57 and lift the load, and then through the coordinated action of the moving component 54, the deflection mechanism 42, and the boom 3, the load is transferred to the target position; the steel rope 57 is released to complete the unloading; Safety monitoring: Throughout the operation, the gyroscope 47 detects the tilt of the crossbeam 43 in real time, and the camera 46 provides a panoramic view. If the tilt exceeds the threshold or there is a risk of collision, the safety clamp 52 automatically triggers the brake, the system stops the operation and alarms; This device is based on multi-mechanism coordinated transmission. Through the full-process linkage of electric drive base 6 for electric movement, multi-stage adjustment of boom 3, horizontal deflection control of slewing beam 4, precise hoisting of traveling mechanism 5, and safety monitoring, it achieves flexible coverage of the working range and safe and precise hoisting process. Among them, hydraulic cylinder drive realizes multi-dimensional angle adjustment of boom 3, worm gear 423 and worm wheel 424 transmission ensure smooth deflection of slewing beam 4, variable frequency motor drive realizes precise speed control of traveling mechanism 5, and safety components provide real-time feedback and intervention for risks. Ultimately, it solves the pain points of traditional cranes such as difficult relocation, narrow coverage, large sway, and low safety, and is suitable for hoisting needs in multiple scenarios.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional crane, comprising a base (1), characterized in that: A support frame (2) is installed on the bottom surface of the base (1). An electric drive foot (6) is installed at the bottom end of the support frame (2). A lifting arm (3) is installed on the top surface of the base (1). A slewing beam (4) is installed at the end of the lifting arm (3). A traveling mechanism (5) is installed on the outer wall of the slewing beam (4). The slewing beam (4) includes a top plate (41), a deflection mechanism (42), and a crossbeam (43). The deflection mechanism (42) is fixedly installed on the outer wall of the end of the support frame (2). The top plate (41) is rotatably installed on the bottom surface of the deflection mechanism (42). The deflection mechanism (42) controls the horizontal rotation of the crossbeam (43). The crossbeam (43) is fixedly connected to the bottom surface of the top plate (41). The traveling mechanism (5) includes a fixed frame (51), a safety clamp (52), a hook (53), and a moving component (54). The system includes a fixed block (55), a pulley (56), a steel rope (57), a stranded wheel (58), and a motor (59). The fixed frame (51) is fixedly connected to the bottom surface of the moving component (54), the moving component (54) is movably connected to the outer wall of the crossbeam (43), the safety clamp (52) is installed on the end face of the moving component (54), the stranded wheel (58) is rotatably connected to the inner wall of the fixed frame (51), the fixed block (55) is fixedly connected to the outer wall of the fixed frame (51), one end of the steel rope (57) is wound around the outer wall of the stranded wheel (58), and the other end of the steel rope (57) passes through the inside of the pulley (56) and is fixedly connected to the fixed block (55). The hook (53) is installed on the outer wall of the pulley (56), and the motor (59) is installed on the outer wall of the fixed frame (51). The output shaft end of the motor (59) is connected to the stranded wheel (58) for transmission.

2. A multi-functional crane according to claim 1, characterized in that: The deflection mechanism (42) includes a housing (421), a motor (422), a worm (423), and a worm wheel (424). The worm wheel (424) is rotatably connected to the inner wall of the housing (421). The motor (422) is installed on the side wall of the housing (421). The worm (423) is rotatably installed on the inner wall of the housing (421). The worm (423) is connected to the worm wheel (424) in a transmission connection. The output shaft end of the motor (422) is fixedly connected to one end of the worm (423).

3. A multi-functional crane according to claim 2, characterized in that: A connecting shaft (411) is fixedly connected to the center of the top surface of the top plate (41), and the top end of the connecting shaft (411) is inserted into the inner wall of the worm gear (424).

4. A multi-functional crane according to claim 1, characterized in that: The bottom surface of the crossbeam (43) is provided with a movable groove (44), and a brake plate (45) is fixedly connected to the inner wall of the movable groove (44). The actuating end of the safety clamp (52) is sleeved on the outer wall of the brake plate (45).

5. A multi-functional crane according to claim 4, characterized in that: Gyroscopes (47) are fixedly installed on the outer walls of both ends of the crossbeam (43), and cameras (46) are installed at the four corners of the bottom surface of the top plate (41).

6. A multi-functional crane according to claim 1, characterized in that: The lifting arm (3) includes a boom (31), a hydraulic cylinder (32), a slewing seat (33), and a forearm (34). The bottom end of the boom (31) is rotatably connected to the side wall of the slewing seat (33). The bottom end of the hydraulic cylinder (32) is rotatably connected to the top surface of the slewing seat (33). The top end of the telescopic rod of the hydraulic cylinder (32) is rotatably connected to the outer wall of the boom (31). One end of the forearm (34) is rotatably connected to the top end of the boom (31). The slewing seat (33) is installed on the top surface of the base (1).

7. A multi-functional crane according to claim 6, characterized in that: The lifting arm (3) also includes a second hydraulic cylinder (35), a third hydraulic cylinder (36), and a connecting seat (37). The connecting seat (37) is rotatably connected to the other end of the forearm (34). The deflection mechanism (42) is fixedly installed on the bottom surface of the connecting seat (37). The bottom end of the third hydraulic cylinder (36) is movably installed on the inner wall of the boom (31). The top end of the telescopic rod of the third hydraulic cylinder (36) is rotatably connected to the inner wall of the end of the forearm (34). One end of the second hydraulic cylinder (35) is rotatably connected to the inner wall of the forearm (34), and one end of the telescopic rod of the second hydraulic cylinder (35) is rotatably connected to the outer wall of the connecting seat (37).

8. A multi-functional crane according to claim 1, characterized in that: The moving component (54) includes a base plate (541), a second motor (542), a moving wheel (543), and a fixed support plate (544). The fixed frame (51) is fixedly connected to the bottom surface of the base plate (541). The fixed support plate (544) has four parts respectively installed on the outer walls of both ends of the base plate (541). The second motor (542) is installed on the outer wall of the fixed support plate (544). The moving wheel (543) is rotatably connected to the top of the second motor (542). The moving wheel (543) is rotatably connected to the groove on the side wall of the crossbeam (43). The output end of the second motor (542) is connected to the moving wheel (543) in a transmission connection.

9. A multi-functional crane according to claim 1, characterized in that: The electric drive base (6) includes a base frame (61), a connecting frame (62), a reducer (63), a motor (64), and a base drive wheel (65). The base frame (61) is fixedly installed at the bottom end of the support frame (2), the connecting frame (62) is fixedly connected to the bottom end of the base frame (61), and the base drive wheel (65) is rotatably connected to the inner wall of the connecting frame (62).

10. A multi-functional crane according to claim 9, characterized in that: The reducer (63) is installed on the side wall of the connecting frame (62), the motor (64) is installed on the side wall of the reducer (63), the output shaft of the motor (64) is fixedly connected to the input shaft of the reducer (63), and the output shaft of the reducer (63) is connected to the base drive wheel (65) for transmission.

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