A travelling crane for warehouse hoisting

Abstract

The application belongs to the technical field of hoisting equipment, and discloses a travelling crane for hoisting operation in a factory warehouse, which comprises a track frame, a cross beam and a running part, the bottom surface of the cross beam is fixedly provided with a steel cable winding mechanism, and the bottom of the steel cable winding mechanism is fixedly connected with a bottom frame. The free rotation of the rotating assembly is limited, so that the rotating assembly is combined with the main steel cable as a whole, and is pulled by the auxiliary pulling assembly on the two sides of the upper portion, so that the rotating assembly loses the free rotation effect after lifting the heavy object, thereby ensuring that the lifted part cannot freely rotate after being conveniently lifted, avoiding the angle deviation of the lifted part after being transported by the travelling crane, and greatly improving the convenience of assembly after the set hook angle is maintained during transportation, reducing the manual rotation interference, realizing the convenient hooking while meeting the transportation stability requirement, reducing the influence of the free rotation angle deviation, and having good use effect.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, specifically a crane for lifting operations in factories and warehouses. Background Technology

[0002] Overhead cranes commonly used in factory and warehouse lifting operations are mainly divided into two types: bridge cranes and gantry cranes. A bridge crane is a large lifting device that spans across the work area, consisting of two supporting piers and two longitudinal beams. A lifting mechanism is suspended under the beams, which can move horizontally along the longitudinal beams and perform lifting operations along tracks on both sides of the work area. Bridge cranes have a large load-bearing capacity and a wide coverage area, making them suitable for lifting operations in large factories or warehouses. A gantry crane is a lifting device composed of columns and beams, resembling a gate in shape.

[0003] Existing overhead cranes used for factory and warehouse lifting operations typically employ two sets of fixed tracks, along with a crossbeam and sliding parts on both sides of the crossbeam. This allows the crossbeam to move laterally along the tracks, and a lifting device mounted below the crossbeam completes the lifting operation. However, in actual use, the hooks at the bottom of the crane's lifting device are usually connected via a movable sleeve. This allows for manual adjustment of the rotation angle before lifting, accommodating the lifting load and enabling convenient hooking. However, due to the free-rotation characteristic, the lifted load rotates during lifting and travel, reducing the stability of the lifting process. Furthermore, when the crane reaches the designated position, the free rotation of the lifted load and the lifting device causes a significant change in the direction of rotation after reaching the target position, requiring manual adjustment. The angle deflection during the actual lifting process is severe, necessitating external manual intervention. After transport by the crane, the lifted load automatically deflects significantly with a large offset, resulting in poor performance. Summary of the Invention

[0004] The purpose of this invention is to provide a crane for factory and warehouse lifting operations to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crane for hoisting operations in a factory warehouse, comprising a track frame, a crossbeam, and a traveling unit. A steel cable winding mechanism is fixedly installed on the bottom surface of the crossbeam. A bottom frame is fixedly connected to the bottom of the steel cable winding mechanism. A main steel cable is wound in the steel cable winding mechanism. The lower end of the main steel cable passes through the bottom frame and is fixedly connected to a connecting component. A rotating component is rotatably sleeved on the outside of the connecting component. A hook is fixedly connected to the bottom of the rotating component. A stepped ring is rotatably sleeved on the top surface of the rotating component. A first spring is fixedly connected to the top of the stepped ring. The upper end of the first spring is fixedly connected to the connecting component. Auxiliary traction components are provided on both sides of the bottom frame. The lower end of the auxiliary traction components is fixedly connected to the stepped ring. The traveling unit is fixedly connected to both ends of the crossbeam.

[0006] The connecting assembly includes an I-shaped connecting frame, a sleeve hole, and a positioning hole;

[0007] The rotating assembly includes a rotating disk, a positioning column, and a stepped annular groove.

[0008] Preferably, the I-shaped connecting frame is fixedly connected to the bottom of the main steel cable, the sleeve hole is opened on the top surface of the I-shaped connecting frame, and the positioning hole is opened on the bottom surface of the I-shaped connecting frame.

[0009] Preferably, the rotating disk is rotatably sleeved on the inner surface of the I-shaped connecting frame, the positioning post is fixedly connected to the bottom surface of the rotating disk, and the stepped annular groove is formed on the top surface of the rotating disk.

[0010] Preferably, the stepped ring is rotatably sleeved inside the stepped ring groove, the upper end of the first spring is fixedly connected to the top of the inner surface of the I-shaped connecting frame, and the first spring is evenly distributed around the top of the stepped ring.

[0011] Preferably, the auxiliary traction assembly includes a motor frame, a support plate, a motor, a reel drum, and an auxiliary steel cable. The motor frame and the support plate are respectively fixedly connected to the side and bottom surfaces of the steel cable winding mechanism. The motor is fixedly installed inside the motor frame. One end of the reel drum is fixedly connected to the output shaft of the motor, and the other end of the reel drum is rotatably sleeved inside the support plate. One end of the auxiliary steel cable is wound around the reel drum, and the lower end of the auxiliary steel cable passes through the bottom frame and the I-shaped connecting frame and is fixedly connected to the stepped ring. The auxiliary steel cable is sleeved in the sleeve hole.

[0012] Preferably, the bottom of the walking part is provided with a movable wheel, the walking part is slidably sleeved inside the track frame, the top surface of the walking part is provided with an injection hole, the inside of the walking part is provided with an internal cavity, a lubrication component is movably provided in the internal cavity, and the bottom surface of the walking part is provided with an oil outlet hole.

[0013] Preferably, the lubrication assembly includes a movable frame, a through hole, a second spring, a push rod, and a third spring. The movable frame is movably fitted inside the internal cavity. The through hole is opened on the bottom surface of the movable frame. One end of the second spring is fixedly connected to the side of the movable frame, and the other end of the second spring is fixedly connected to the inner wall of the traveling part. The push rod is movably fitted onto the end face of the traveling part. One end of the third spring is fixedly connected to the end face of the traveling part, and the other end of the third spring is fixedly connected to one end of the push rod. The push rods are symmetrically distributed on both sides of the movable frame.

[0014] Preferably, the through hole is located above the injection hole, the spacing between adjacent through holes is equal to the spacing between two adjacent sets of injection holes, and a limit rod is fixedly connected inside the track frame.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention utilizes the rotating assembly and connecting assembly in a rotating sleeve connection, with a stepped ring on the top of the rotating assembly and a connecting spring. This allows the rotating assembly, along with the hook, to rotate freely in the initial stage, adapting to hook movements in different directions. After the hook is lifted, the rotating assembly, sliding along the inside of the connecting assembly, is secured in the connecting assembly by a positioning pin, limiting its free rotation. This integrates the rotating assembly with the main steel cable. Combined with the traction of the auxiliary pulling assemblies on both sides above, the rotating assembly loses its free rotation after the load is lifted, ensuring that the lifting component cannot rotate freely after easy lifting. This also prevents the lifting component from rotating and shifting its angle during transport. For lifting components requiring assembly, this invention significantly improves the ability to maintain the set hook angle after transport, facilitating assembly and reducing human interference during rotation. It achieves convenient hook lifting while meeting transport stability requirements, minimizing the impact of angle deviation during free rotation, resulting in excellent performance.

[0017] 2. This invention utilizes two sets of auxiliary traction components. Under the condition of an adaptive hook, it allows for free rotation before lifting and hooking, while ensuring stable positioning after lifting to prevent rotational deviation. Simultaneously, after the trolley transports the item to the target location, the auxiliary traction components are used again to maintain tension for stable transport and positioning of the lifted item. In the case of actively lifting the rotating component, the rotating component and the lifted item are slightly raised relative to the connecting component to release the positioning, allowing for free rotation as required. Combined with manual adjustment, this enables convenient switching between stable transport and adjustable transport orientations for the lifted item, greatly improving adaptability to different lifting requirements. It has a wide range of applications, a high upper limit for operational adjustment, and excellent performance.

[0018] 3. This invention creates an internal cavity within the traveling section and adds an elastically connected lubrication assembly within it. When lubricating oil is injected into the internal cavity, the movable frame in the lubrication assembly seals the oil outlet. When the traveling section moves to its limit position and contacts and presses against the limit rod, the lateral movement of the push rod pushes the movable frame, thereby connecting the through hole and the oil outlet and allowing the lubricating oil to drip. The automatically dripping lubricating oil then completes automatic lubrication during subsequent movement, preventing excessive friction noise during vehicle movement due to insufficient lubrication. It also reduces wear on contact parts due to friction, increases service life, controls environmental noise during vehicle operation, and has good performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram showing the arrangement of the auxiliary traction components of the present invention;

[0021] Figure 3 This is an exploded view of the rotating assembly, connecting assembly, and stepped ring of the present invention;

[0022] Figure 4 This is a cross-sectional schematic diagram of the rotating component of the present invention;

[0023] Figure 5 This is a schematic diagram of the auxiliary traction component of the present invention;

[0024] Figure 6 This is a cross-sectional schematic diagram of the walking part and lubrication assembly of the present invention;

[0025] Figure 7 This is a schematic diagram of the lubrication assembly of the present invention.

[0026] In the diagram: 1. Track frame; 2. Crossbeam; 3. Traveling section; 4. Cable winding mechanism; 5. Bottom frame; 6. Main cable; 7. Connecting assembly; 71. I-beam connecting frame; 72. Sleeve hole; 73. Positioning hole; 8. Rotating assembly; 81. Rotating disk; 82. Positioning column; 83. Stepped ring groove; 9. Hook section; 10. Auxiliary traction assembly; 101. Motor frame; 102. Support plate; 103. Motor; 104. Reel drum; 105. Auxiliary cable; 11. Stepped ring; 12. Spring No. 1; 13. Lubrication assembly; 131. Movable frame; 132. Through hole; 133. Spring No. 2; 134. Push rod; 135. Spring No. 3; 14. Limiting rod; 15. Moving wheel; 16. Internal cavity; 17. Injection hole; 18. Oil outlet hole. Detailed Implementation

[0027] 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.

[0028] like Figures 1 to 7 As shown, this embodiment of the invention provides a crane for factory and warehouse lifting operations, including a track frame 1, a crossbeam 2, and a traveling part 3. A steel cable winding mechanism 4 is fixedly installed on the bottom surface of the crossbeam 2. A bottom frame 5 is fixedly connected to the bottom of the steel cable winding mechanism 4. A main steel cable 6 is wound in the steel cable winding mechanism 4. The lower end of the main steel cable 6 passes through the bottom frame 5 and is fixedly connected to a connecting component 7. A rotating component 8 is rotatably sleeved on the outside of the connecting component 7. A hook part 9 is fixedly connected to the bottom of the rotating component 8. A stepped ring 11 is rotatably sleeved on the top surface of the rotating component 8. A first spring 12 is fixedly connected to the top of the stepped ring 11. The upper end of the first spring 12 is fixedly connected to the connecting component 7. Auxiliary traction components 10 are provided on both sides of the bottom frame 5. The lower end of the auxiliary traction components 10 is fixedly connected to the stepped ring 11. The traveling part 3 is fixedly connected to both ends of the crossbeam 2.

[0029] The connecting component 7 includes an I-shaped connecting bracket 71, a sleeve hole 72, and a positioning hole 73;

[0030] The rotating assembly 8 includes a rotating disk 81, a positioning post 82, and a stepped annular groove 83.

[0031] First embodiment: as shown Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when hooking the lifting component is required, the rotating assembly 8 is rotated to change the orientation of the hook 9 and adjust its position according to the actual hook direction. Simultaneously, the I-beam connecting frame 71 in the connecting assembly 7 is rotated so that the bottom positioning hole 73 aligns with the position of the positioning post 82. After hooking, as the main steel cable 6 is pulled upwards, the rotating assembly 8 moves downwards along the connecting assembly 7 under gravity. While the first spring 12 is stretched, the positioning post 82 engages with the positioning hole 73 at the bottom of the I-beam connecting frame 71. The main steel cable 6 continues to be wound up for lifting. The two sets of auxiliary traction assemblies 10 are activated to tension the auxiliary steel cable 105, and the lifting operation is initiated. The traveling part 3 in the vehicle moves laterally along the track frame 1. During the lifting and traveling process, the lifting part is kept stable by the pull of the main steel cable 6 and the auxiliary steel cables 105 on both sides. When it is transported to the target position, the orientation of the lifting part does not deviate. The main steel cable 6 and the auxiliary steel cables 105 are lowered to lower the lifting part. When it is necessary to adjust the orientation of the lifting part after traveling, the two sets of auxiliary traction components 10 are activated. When the auxiliary steel cables 105 are raised synchronously, the rotating component 8, together with the hook part 9 and the lifting part, are raised along the connecting component 7. The positioning column 82 is moved out of the positioning hole 73, the first spring 12 elastically returns to its original state, and pushes the lifting part and the rotating component 8 to rotate synchronously, thereby changing the orientation.

[0032] First, by utilizing the rotating assembly 8 and the connecting assembly 7 in a rotating sleeve, along with the stepped ring 11 on the top of the rotating assembly 8 and the connected spring 12, the rotating assembly 8, together with the hook part 9, can rotate freely in the initial stage to adapt to hooks in different directions. After the hook is lifted, the rotating assembly 8, which slides along the inside of the connecting assembly 7, is secured in the connecting assembly 7 by the positioning pin 82, limiting the free rotation of the rotating assembly 8. This allows the rotating assembly 8 to be integrated with the main steel cable 6 as a whole. With the traction of the auxiliary traction assemblies 10 on both sides above, the rotating assembly 8 loses its free rotation effect after the heavy object is lifted, thus ensuring that the lifting part cannot rotate freely after easy lifting. This also prevents the lifting part from rotating and shifting its angle after being transported by a crane. For lifting parts that need to be assembled, this greatly improves the ability to maintain the set hook angle after transportation, making assembly easier. It reduces human interference in rotation, achieves convenient hook lifting while meeting the requirements of transportation stability, reduces the impact of free rotation angle deflection, and has good performance.

[0033] Furthermore, by utilizing two sets of auxiliary traction components 10, under the condition of an adaptive hook, it allows for free rotation before hooking and stable positioning after lifting to prevent self-rotation deviation. Simultaneously, after the trolley transports the item to the target position, the auxiliary traction components 10 are used again to maintain tension for stable transportation and positioning of the lifted item. In the case of actively lifting the rotating component 8, the rotating component 8 and the lifted item are slightly raised relative to the connecting component 7 to release the positioning and allow for free rotation as required. With manual adjustment, the lifting item can be easily switched between stable transportation and adjustable transportation, greatly improving adaptability to different lifting requirements. It has a wide range of applications, a high upper limit for operation and adjustment, and good performance.

[0034] Second embodiment: as follows Figure 1 , Figure 6 and Figure 7 As shown, when the traveling part 3 moves to the extreme positions on both sides, the outer end of the push rod 134 in the lubrication assembly 13 contacts and squeezes the limit rod 14, causing the push rod 134 to move laterally and compress the third spring 135. At the same time, the inner end of the push rod 134 pushes the movable frame 131 laterally, so that while the second spring 133 is stretched, the through hole 132 at the bottom of the movable frame 131 moves laterally and aligns with the oil outlet hole 18 at the bottom. At this time, the lubricating oil in the inner cavity 16 of the movable frame flows down along the through hole 132 and the oil outlet hole 18. The flowing lubricating oil drips into the interior of the moving wheel 15 and the track frame 1. As the traveling part 3 moves laterally, the internal lubrication of the track is completed, and the moving friction noise is reduced.

[0035] First, by opening an internal cavity 16 inside the traveling part 3 and adding a lubrication assembly 13 with elastic connection inside the internal cavity 16, when lubricating oil is injected into the internal cavity 16, the movable frame 131 in the lubrication assembly 13 seals the oil outlet 18. When the traveling part 3 moves to the limit position and contacts and is squeezed by the limit rod 14, the movable frame 131 is pushed laterally in conjunction with the lateral movement of the push rod 134, thereby connecting the through hole 132 and the oil outlet 18 and realizing the dripping of lubricating oil. The automatically dripping lubricating oil completes automatic lubrication during subsequent movement, avoiding excessive friction noise when the vehicle moves due to lack of lubrication, reducing wear on contact parts due to friction, improving service life, controlling environmental noise during vehicle operation, and achieving good performance.

[0036] Among them, the I-shaped connecting frame 71 is fixedly connected to the bottom of the main steel cable 6, the sleeve hole 72 is opened on the top surface of the I-shaped connecting frame 71, the positioning hole 73 is opened on the bottom surface of the I-shaped connecting frame 71, the rotating disk 81 is rotatably sleeved on the inner surface of the I-shaped connecting frame 71, the positioning post 82 is fixedly connected to the bottom surface of the rotating disk 81, the stepped ring groove 83 is opened on the top surface of the rotating disk 81, the stepped ring 11 is rotatably sleeved inside the stepped ring groove 83, the upper end of the first spring 12 is fixedly connected to the top of the inner surface of the I-shaped connecting frame 71, and the first spring 12 is evenly distributed around the top of the stepped ring 11.

[0037] During use, the I-shaped connecting frame 71 is adapted to the rotating disk 81 to ensure stable rotation while preventing vertical separation. The sleeve hole 72 is adapted to the sleeve of the auxiliary steel cable 105. The positioning holes 73 are multiple sets and evenly distributed to facilitate the adaptation of the positioning post 82 after rotation. The position of the positioning post 82 is adapted to the small deflection of the main steel cable 6 and the connecting component 7 to ensure that the positioning post 82 is stably sleeved in the positioning hole 73 when the hook moves downward. The stepped ring 11 is adapted to the stepped ring groove 83 to maintain the stable rotation of the rotating disk 81, and at the same time, it is pulled and controlled by the No. 1 spring 12.

[0038] The auxiliary traction assembly 10 includes a motor frame 101, a support plate 102, a motor 103, a reel drum 104, and an auxiliary steel cable 105. The motor frame 101 and the support plate 102 are respectively fixedly connected to the side and bottom surfaces of the steel cable winding mechanism 4. The motor 103 is fixedly installed inside the motor frame 101. One end of the reel drum 104 is fixedly connected to the output shaft of the motor 103, and the other end of the reel drum 104 is rotatably sleeved inside the support plate 102. One end of the auxiliary steel cable 105 is wound around the reel drum 104, and the lower end of the auxiliary steel cable 105 passes through the bottom frame 5 and the I-shaped connecting frame 71 and is fixedly connected to the stepped ring 11. The auxiliary steel cable 105 is sleeved in the sleeve hole 72.

[0039] During use, the auxiliary traction component 10 is used to assist in the traction of the rotating component 8. On the one hand, it maintains adaptive tension during transportation, and works with the main steel cable 6 to maintain the transportation stability of the lifting component and reduce the amount of torsion. On the other hand, after being transported to the target position, the rotating component 8 is actively pulled up, so that the rotating component 8 drives the lifting component to move up relative to the connecting component 7 and then contact the ferrule, thereby realizing the free torsion of the rotating component 8 and the lifting component again, which can adapt to different workpiece lifting requirements.

[0040] The bottom of the walking part 3 is provided with a moving wheel 15. The walking part 3 is slidably sleeved inside the track frame 1. The top surface of the walking part 3 is provided with an injection hole 17. The inside of the walking part 3 is provided with an internal cavity 16. A lubrication component 13 is movably provided in the internal cavity 16. The bottom surface of the walking part 3 is provided with an oil outlet hole 18.

[0041] The walking part 3 completes the movement along the track frame 1, the injection hole 17 replenishes the lubricating oil, and the internal cavity 16 realizes the storage of lubricating oil.

[0042] The lubrication assembly 13 includes a movable frame 131, a through hole 132, a second spring 133, a push rod 134, and a third spring 135. The movable frame 131 is movably fitted inside the internal cavity 16. The through hole 132 is opened on the bottom surface of the movable frame 131. One end of the second spring 133 is fixedly connected to the side of the movable frame 131, and the other end of the second spring 133 is fixedly connected to the inner wall of the traveling part 3. The push rod 134 is movably fitted on the end face of the traveling part 3. One end of the third spring 135 is fixedly connected to the end face of the traveling part 3, and the other end of the third spring 135 is fixedly connected to one end of the push rod 134. The push rods 134 are symmetrically distributed on both sides of the movable frame 131. The through hole 132 is located above the injection hole 17. The distance between adjacent through holes 132 is equal to the distance between two adjacent sets of injection holes 17. A limit rod 14 is fixedly connected inside the track frame 1.

[0043] During use, by utilizing the lubrication component 13 and under the limiting of the limiting rod 14, the push rod 134 is squeezed after being transported to the limit position, so that the lateral movement of the movable frame 131 is controlled, and the alignment control of the through hole 132 and the oil outlet hole 18 is completed. Under alignment, the lubricating oil is released and discharged, thereby achieving staged lubrication, reducing the impact of friction noise, and making lubrication active and automatic.

[0044] Working principle and usage procedure: When hooking the lifting component, rotate the rotating component 8 to change the orientation of the hook 9 and adjust its position according to the actual hook direction. Simultaneously, rotate the I-shaped connecting frame 71 in the connecting component 7 to align the bottom positioning hole 73 with the positioning post 82. After hooking, as the main steel cable 6 is pulled upwards, gravity causes the rotating component 8 to move downwards along the connecting component 7. Simultaneously, the first spring 12 stretches, and the positioning post 82... Connect the main steel cable 6 to the positioning hole 73 at the bottom of the I-beam connecting frame 71, continue winding the main steel cable 6, and lift the load. The two sets of auxiliary traction components 10 will activate, tensioning the auxiliary steel cable 105. Start the traveling unit 3 of the trolley and move it laterally along the track frame 1. During the lifting and traveling process, the lifted component is stably transported by the traction of the main steel cable 6 and the auxiliary steel cables 105 on both sides. When transported to the target position, the orientation of the lifted component remains unchanged. Lower the main steel cable 6 and the auxiliary steel cables 105 to lower the lifted component. When it is necessary to move to a later position... When adjusting the orientation of the lifting component, activate the two sets of auxiliary traction components 10. As the auxiliary steel cable 105 is raised synchronously, the rotating component 8, along with the hook part 9 and the lifting component, is lifted along the connecting component 7. This causes the positioning pin 82 to move out of the positioning hole 73, and the first spring 12 to elastically return to its original position, pushing the lifting component and rotating component 8 to rotate synchronously, thus changing its orientation. When the traveling part 3 moves to its extreme positions on both sides, the outer end of the push rod 134 in the lubrication component 13 contacts and presses against the limit rod 14, causing... The push rod 134 moves laterally and compresses the third spring 135. At the same time, the inner end of the push rod 134 pushes the movable frame 131 laterally, so that while the second spring 133 is stretched, the through hole 132 at the bottom of the movable frame 131 moves laterally and aligns with the oil outlet hole 18 at the bottom. At this time, the lubricating oil in the inner cavity 16 of the movable frame flows down along the through hole 132 and the oil outlet hole 18. The flowing lubricating oil drips into the interior of the moving wheel 15 and the track frame 1. As the subsequent traveling part 3 moves laterally, the internal lubrication of the track is completed, and the moving friction noise is reduced.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crane for hoisting operations in a factory warehouse, comprising a track frame (1), a crossbeam (2), and a traveling section (3), characterized in that: A cable winding mechanism (4) is fixedly installed on the bottom surface of the crossbeam (2). A bottom frame (5) is fixedly connected to the bottom of the cable winding mechanism (4). A main cable (6) is wound in the cable winding mechanism (4). The lower end of the main cable (6) passes through the bottom frame (5) and is fixedly connected to a connecting component (7). A rotating component (8) is rotatably sleeved on the outside of the connecting component (7). A hook part (9) is fixedly connected to the bottom of the rotating component (8). A step ring (11) is rotatably sleeved on the top surface of the rotating component (8). A first spring (12) is fixedly connected to the top of the step ring (11). The upper end of the first spring (12) is fixedly connected to the connecting component (7). Auxiliary traction components (10) are provided on both sides of the bottom frame (5). The lower end of the auxiliary traction component (10) is fixedly connected to the step ring (11). The walking part (3) is fixedly connected to both ends of the crossbeam (2). The connecting component (7) includes an I-shaped connecting frame (71), a sleeve hole (72), and a positioning hole (73). The rotating assembly (8) includes a rotating disk (81), a positioning post (82), and a stepped annular groove (83); The I-beam connecting frame (71) is fixedly connected to the bottom of the main steel cable (6), the sleeve hole (72) is opened on the top surface of the I-beam connecting frame (71), and the positioning hole (73) is opened on the bottom surface of the I-beam connecting frame (71); The rotating disk (81) is rotatably sleeved on the inner surface of the I-shaped connecting frame (71), the positioning post (82) is fixedly connected to the bottom surface of the rotating disk (81), and the stepped annular groove (83) is formed on the top surface of the rotating disk (81); The stepped ring (11) is rotatably sleeved inside the stepped ring groove (83), and the upper end of the first spring (12) is fixedly connected to the top of the inner surface of the I-shaped connecting frame (71). The first spring (12) is evenly distributed around the top of the stepped ring (11). The auxiliary traction assembly (10) includes a motor frame (101), a support plate (102), a motor (103), a reel cylinder (104), and an auxiliary steel cable (105). The motor frame (101) and the support plate (102) are respectively fixedly connected to the side and bottom surfaces of the steel cable winding mechanism (4). The motor (103) is fixedly installed inside the motor frame (101). One end of the reel cylinder (104) is fixedly connected to the output shaft of the motor (103). The other end of the reel cylinder (104) is rotatably sleeved inside the support plate (102). One end of the auxiliary steel cable (105) is wound around the reel cylinder (104). The lower end of the auxiliary steel cable (105) passes through the bottom frame (5), the I-shaped connecting frame (71), and is fixedly connected to the stepped ring (11). The auxiliary steel cable (105) is sleeved in the sleeve hole (72).

2. The overhead crane for factory and warehouse lifting operations according to claim 1, characterized in that: The bottom of the walking part (3) is provided with a moving wheel (15). The walking part (3) is slidably sleeved inside the track frame (1). The top surface of the walking part (3) is provided with an injection hole (17). The inside of the walking part (3) is provided with an internal cavity (16). A lubrication component (13) is movably provided in the internal cavity (16). The bottom surface of the walking part (3) is provided with an oil outlet hole (18).

3. The overhead crane for factory and warehouse lifting operations according to claim 2, characterized in that: The lubrication assembly (13) includes a movable frame (131), a through hole (132), a second spring (133), a push rod (134), and a third spring (135). The movable frame (131) is movably fitted inside the inner cavity (16). The through hole (132) is opened on the bottom surface of the movable frame (131). One end of the second spring (133) is fixedly connected to the side of the movable frame (131), and the other end of the second spring (133) is fixedly connected to the inner wall of the walking part (3). The push rod (134) is movably fitted on the end face of the walking part (3). One end of the third spring (135) is fixedly connected to the end face of the walking part (3), and the other end of the third spring (135) is fixedly connected to one end of the push rod (134). The push rod (134) is symmetrically distributed on both sides of the movable frame (131).

4. The overhead crane for factory and warehouse lifting operations according to claim 3, characterized in that: The through hole (132) is located above the injection hole (17), and the spacing between adjacent through holes (132) is equal to the spacing between two adjacent sets of injection holes (17). The track frame (1) is internally fixedly connected with a limit rod (14).

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