Double-girder portal crane with anti-inclination structure
Through the mating of the rotor with the spring, the guide of the side slider, the slider limit and sponge cylinder, the tilt problem caused by the swing of the crane's heavy objects is solved, and the stability of the crane and the protection of the steel cable are achieved.
Patent Information
- Application Number
- CN202510915943.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2025-08-15
AI Technical Summary
When the crane catches a heavy object, the swing of the heavy object after the hoisting is raised will cause the steel cable to swing with the heavy object, and the center of gravity will shift, which will increase the safety hazard of the crane tilt.
The rotor is used to cooperate with the spring, and the steel cable is tightened by gravity by heavy objects, so that the steel cable is straightened, the spring stretches to generate elasticity, and maintain the center position of the hook; the side slider is guided to the inner slider to ensure that the steel cable is tightened consistently; the side slider is used to limit the pulley parallel to the shaft pad; the steel cable is protected by arc-shaped cover; and the sponge cylinder is used to clean and apply lubricating grease.
Effectively prevent heavy objects from shaking and tilting when they are hooked, ensure the stability of the crane, protect the steel cable from damage, and improve handling efficiency.
Smart Images
Figure CN120482956A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cranes, and in particular to a double-girder gantry crane with an anti-tilt structure. Background Art
[0002] Gantry cranes, also known as gantry cranes, are a variation of bridge cranes. They rely on a trolley running mechanism to drive the bridge frame to achieve longitudinal movement on the ground track, and the hoisting trolley to achieve horizontal movement on the track on the main beam. In addition, the lifting movement of the hoisting mechanism on the hoisting trolley enables the gantry crane to perform lifting operations in a rectangular area and the space above it, that is, loading and unloading goods within a three-dimensional space. A double-girder gantry crane is a typical type of gantry crane. Its core feature is the use of two main beams as the main load-bearing structure. A double-girder gantry crane refers to a lifting equipment with two parallel main beams as the main structure, which realizes vertical lifting and horizontal handling of materials through a trolley running mechanism, hoisting trolley and hoisting mechanism.
[0003] When a crane hooks up a heavy object, the heavy object swings after being hooked up, causing the steel cable to swing along with the heavy object. During the swinging process, the center of gravity of the heavy object changes and shifts, making the crane prone to tilting and increasing safety hazards. Summary of the Invention
[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:
[0005] A double-girder gantry crane with an anti-tilt structure, comprising:
[0006] Main beams, the number of the main beams being two, and end plates being fixedly mounted at both ends of the main beams, the main beams being fixedly connected by the end plates, and legs being fixedly mounted at the bottoms of the end plates;
[0007] A cable winding mechanism, the cable winding mechanism being installed between the main beams, and having drive mechanisms installed on both sides of the cable winding mechanism, a steel cable being fixedly installed inside the cable winding mechanism, the steel cable being wound inside the cable winding mechanism, and a hook being fixedly installed at the bottom end of the steel cable;
[0008] The outer surface of the rotating wheel is provided with a wheel groove, and the steel cable is located at the wheel groove, and a spring is fixedly installed between the connecting block and the slot block.
[0009] Preferably, a side baffle is fixedly installed on the side of the connecting block close to the rotating wheel, and the side baffle close to the rotating wheel is in contact with the outer side of the rotating wheel, and a side slide is fixedly installed on the side of the connecting block away from the rotating wheel. A plate groove is opened on the outer side of the slot block, and the side slide cooperates with the inner slide bar to guide the moving direction of the connecting block and the rotating wheel, ensuring that the rotating wheels on both sides are at the same height, ensuring that the pulling of the steel cables on both sides is at the same height, and preventing the tightening positions of the steel cables on both sides from being at different heights, causing the hook to drive the heavy object to tilt, and the side slide is slidably adapted to the plate groove of the slot block.
[0010] Preferably, the driving mechanism includes a wheel groove plate and a reducer, the wheel groove plate is fixedly installed on the opposite side of the main beam, the reducer is fixedly installed on the top of the cable winding mechanism, and the reducer is symmetrically installed along the center position of the axis of the cable winding mechanism, and a first motor is fixedly installed on the outside of the reducer, the output end of the first motor is fixedly connected to the input shaft of the reducer, the output shaft of the reducer is fixedly connected to the transmission shaft through a coupling, and the end of the transmission shaft away from the reducer is fixedly connected to a pulley.
[0011] The top of the non-opposite surface of the side slider is tightly fitted with the outer side of the wheel groove plate, and the top of the non-opposite surface of the side slider is fixedly installed with a shaft pad, the bottom of the shaft pad is tightly fitted with the top of the wheel groove plate, and the top of the shaft pad is an arc surface, and the top of the shaft pad is rotatable and adapted for the outer side of the transmission shaft.
[0012] Preferably, the cable winding mechanism includes a movable platform, a through groove is symmetrically opened at the center position of the bottom of the movable platform, and a fixed plate is fixedly installed on the top of the movable platform, an axis groove is opened on the outer side of the fixed plate, the fixed plate is evenly installed axially on the top of the movable platform, and the fixed plate is located on both sides of the through groove, a rotating shaft is installed at the axis groove of the fixed plate, and the outer side of the rotating shaft is rotatably connected to the axis groove of the fixed plate through a bearing.
[0013] Preferably, a cable reel is fixedly installed on the outer side of the rotating shaft, the number of the cable reels is two, and the cable reels are located between the fixing plates, one end of the steel cable is fixedly connected to the cable reel and the steel cable is wound inside the cable reel, and an arc-shaped cover is fixedly installed between the fixing plates, and the arc-shaped cover cooperates with the cable reel to wrap the top of the cable reel to block rainwater or dust dripping from above and protect the steel cable wound inside the cable reel. At the same time, the arc-shaped cover restricts the steel cable wound inside the cable reel when the steel cable breaks accidentally, avoiding accidental damage to the steel cable due to unrestrictedness. The arc-shaped cover is located above the cable reel, and a second motor is fixedly installed on the top of the movable platform. The output end of the second motor is fixedly connected to one end of the rotating shaft, and a side groove frame is fixedly installed at the through groove of the movable platform. The side groove frame is symmetrically installed along the axial center position of the through groove, and an inner slide cylinder is slidably installed between the side groove frames, and a sponge cylinder is fixedly installed on the inner wall of the inner slide cylinder. The sponge cylinder cooperates with the inner slide cylinder. During the winding process of the steel cable, as the winding position of the steel cable changes, the inner slide cylinder can slide between the side groove frames. At the same time, when the steel cable passes through the inside of the sponge cylinder, the inner slide cylinder is used to clean the debris on the surface of the steel cable, and the protective grease on the surface of the steel cable is evenly applied to protect the steel cable. The steel cable passes through the inside of the sponge cylinder, and the outer side of the steel cable is tightly fitted with the inner wall of the sponge cylinder.
[0014] The present invention provides a double-girder gantry crane with an anti-tilt structure. It has the following beneficial effects:
[0015] 1. The double-girder gantry crane with an anti-tilt structure cooperates with the spring through the rotating wheel. When the hook hooks up the weight, the gravity of the weight is used to tighten the steel cable, so that the steel cable is straightened, and the spring is stretched and deformed to generate elastic force. The elastic force of the spring drives the steel cable through the rotating wheel, tightening the steel cable to both sides, cooperating with the gravity of the weight to keep the hook in the center position, avoiding the weight of the hook from shaking and tilting due to the deviation of its own center when it is hooked up.
[0016] 2. The double-girder gantry crane with an anti-tilt structure guides the movement direction of the connecting block and the wheel through the cooperation of the side slide and the inner slide bar, ensuring that the wheels on both sides are at the same height, ensuring that the pulling of the steel cables on both sides is at the same height, and preventing the tightening positions of the steel cables on both sides from being at different heights, causing the hook to drive the heavy object to tilt.
[0017] 3. The double-girder gantry crane with an anti-tilt structure cooperates with the shaft pad through the side slider and the shaft pad. When the transmission shaft rotates and drives the pulley to slide on the inner wall of the wheel groove plate, the shaft pad is used to support the bottom of the transmission shaft. At the same time, the side slider limits the position of the pulleys on both sides, and the auxiliary wheel groove plate limits the pulleys to ensure the parallelism between the pulleys, avoiding offset between the pulleys on both sides, resulting in obstructed movement and affecting the handling of heavy objects.
[0018] 4. The double-girder gantry crane with an anti-tilt structure cooperates with the cable reel through an arc-shaped cover, so that the arc-shaped cover wraps the top of the cable reel to block rainwater or dust dripping from above, and protects the steel cable wound inside the cable reel. At the same time, the arc-shaped cover restricts the steel cable wound inside the cable reel when the steel cable breaks accidentally, to prevent the steel cable from being unrestricted and causing accidental damage.
[0019] 5. The double-girder gantry crane with an anti-tilt structure cooperates with the sponge cylinder and the inner slide cylinder. During the winding process of the steel cable, the inner slide cylinder can slide between the side groove frames as the winding position of the steel cable changes. At the same time, when the steel cable passes through the inside of the sponge cylinder, the inner slide cylinder is used to clean the debris on the surface of the steel cable, and the protective grease on the surface of the steel cable is evenly applied to protect the steel cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a structural schematic diagram of a double-girder gantry crane with an anti-tilt structure according to the present invention;
[0021] Figure 2 This is a partial structural diagram of a double-girder gantry crane with an anti-tilt structure according to the present invention;
[0022] Figure 3 This is a partial structural side view of a double-girder gantry crane with an anti-tilt structure according to the present invention;
[0023] Figure 4 This is a partial structural top view of a double-girder gantry crane with an anti-tilt structure according to the present invention;
[0024] Figure 5 Schematic diagram of the structure of the driving mechanism of the present invention;
[0025] Figure 6 It is a partial structural schematic diagram of the driving mechanism of the present invention;
[0026] Figure 7 It is a structural schematic diagram of the cable winding mechanism of the present invention;
[0027] Figure 8 It is a bottom view of the structure of the cable winding mechanism of the present invention.
[0028] In the figure: 1. Main beam; 2. Cable winding mechanism; 3. Driving mechanism; 4. Support leg; 5. Hook; 6. Steel cable; 7. End plate; 8. Slot block; 9. Bottom pad; 10. Bottom slider; 11. Spring; 12. Side slide; 13. Inner slide bar; 14. Connecting block; 15. Rotating wheel; 16. Side baffle; 21. Moving platform; 22. Second motor; 23. Arc cover; 24. Cable winding wheel; 25. Fixed plate; 26. Rotating shaft; 27. Side slot frame; 28. Sponge cylinder; 29. Inner slide cylinder; 31. Wheel groove plate; 32. Reducer; 33. Pulley; 34. First motor; 35. Transmission shaft; 36. Side slide; 37. Shaft pad. DETAILED DESCRIPTION
[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0030] The first embodiment, as Figures 1 to 4 As shown, the present invention provides a technical solution:
[0031] A double-girder gantry crane with an anti-tilt structure, comprising:
[0032] Main beams 1, there are two main beams 1, and end plates 7 are fixedly installed at both ends of the main beams 1. The main beams 1 are fixedly connected by the end plates 7, and the bottoms of the end plates 7 are fixedly installed with support legs 4;
[0033] The cable winding mechanism 2 is installed between the main beams 1, and a driving mechanism 3 is installed on both sides of the cable winding mechanism 2. A steel cable 6 is fixedly installed inside the cable winding mechanism 2. The steel cable 6 is wound inside the cable winding mechanism 2, and a hook 5 is fixedly installed at the bottom end of the steel cable 6;
[0034] The bottom of the main beam 1 is provided with a transverse groove, and a bottom slider 10 is slidably installed at the bottom of the main beam 1. The bottom slider 10 is slidably adapted to the transverse groove of the main beam 1, and a bottom pad 9 is fixedly installed at the bottom of the bottom slider 10. A slot block 8 is fixedly installed at the bottom of the bottom pad 9. The cable winding mechanism 2 drives the steel cable 6 to wind, so that the steel cable 6 drives the hook 5 to move. During the movement, the hook 5 hooks the weight to be lifted, driving the weight to move together. At the same time, in the process of driving the weight to move, the steel cable 6 passes through the gap between the pulley 15 and the side baffle 16. A rod groove is provided on the outside of the slot block 8, and an inner slide rod 13 is slidably installed at the rod groove of the slot block 8. The end of the inner slide rod 13 away from the slot block 8 is fixedly installed with a connecting block 14. The outer side of the connecting block 14 is passed through The rotating wheel 15 is installed on the shaft rod, and a wheel groove is provided on the outside of the rotating wheel 15. The steel cable 6 is located in the wheel groove. Under the elastic deformation characteristics of the spring 11, the gravity of the weight is transmitted to the steel cable 6 through the hook 5, so that the steel cable 6 is tightened. When the steel cables 6 on both sides are tightened by the gravity of the weight, the spring 11 is driven to stretch and deform through the rotating wheel 15 and the connecting block 14, so that the rotating wheel 15 is close to each other when the steel cables 6 on both sides are tightened. At the same time, the spring 11 generates elastic force after the stretching deformation, so that the rotating wheel 15 cooperates with the gravity of the weight to tighten the steel cable 6 during the movement of the steel cable 6, so that the rotating wheel 15 pulls the steel cables 6 on both sides to both sides under the elastic force of the spring 11, so that the hook 5 is in the center position, and the spring 11 is fixedly installed between the connecting block 14 and the slot block 8.
[0035] A side baffle 16 is fixedly installed on the side of the connecting block 14 close to the runner 15, and the side baffle 16 close to the runner 15 is in contact with the outer side of the runner 15. A side slide 12 is fixedly installed on the side of the connecting block 14 away from the runner 15. A plate groove is provided on the outer side of the slot block 8, and the side slide 12 is slidably adapted to the plate groove of the slot block 8.
[0036] The second embodiment, based on the first embodiment, see Figures 5 and 6As shown, the driving mechanism 3 includes a wheel groove plate 31 and a reducer 32. The wheel groove plate 31 is fixedly mounted on the opposite side of the main beam 1, and the reducer 32 is fixedly mounted on the top of the cable winding mechanism 2, and the reducer 32 is symmetrically installed along the center position of the axis of the cable winding mechanism 2. A first motor 34 is fixedly mounted on the outside of the reducer 32, and the output end of the first motor 34 is fixedly connected to the input shaft of the reducer 32. The reducer 32 is fixedly connected to the cable winding mechanism 2 through the reducer 32, so that the driving mechanism 3 and the cable winding mechanism 2 are fixed. At the same time, the first motor 34 drives the input shaft of the reducer 32 to rotate, so that the reducer 32 reduces the speed and increases the torque, and drives the transmission shaft 35 to rotate through the output shaft, so that the transmission shaft 35 drives the pulley 33 to slide on the inner wall of the wheel groove plate 31, driving the cable winding mechanism 2 to move between the main beams 1, and the output shaft of the reducer 32 is fixedly connected to the transmission shaft 35 through a coupling, and the end of the transmission shaft 35 away from the reducer 32 is fixedly connected to the pulley 33.
[0037] The pulley 33 is slidably adapted to the inner wall of the wheel groove plate 31, and grooves are provided at the bottoms of the opposite surfaces of the wheel groove plate 31, and side sliders 36 are slidably installed at the grooves of the wheel groove plate 31. The non-opposite surfaces of the side sliders 36 are tightly fitted with the outer side of the wheel groove plate 31. When the cable winding mechanism 2 hooks up the heavy object, it drives the heavy object to move for transportation. At the same time, when the transmission shaft 35 rotates, it is supported between the transmission shaft 35 and the wheel groove plate 31 by the shaft pad 37 to reduce the wear on the transmission shaft 35, and the tops of the non-opposite surfaces of the side sliders 36 are fixedly installed with shaft pads 37, the bottom of the shaft pad 37 is tightly fitted with the top of the wheel groove plate 31, and the top of the shaft pad 37 is an arc surface, and the top of the shaft pad 37 is rotatably adapted to the outer side of the transmission shaft 35.
[0038] The third embodiment, based on the first and second embodiments, see Figures 7 and 8 As shown, the cable winding mechanism 2 includes a moving platform 21, and a through slot is symmetrically opened at the center position of the bottom of the moving platform 21, and a fixing plate 25 is fixedly installed on the top of the moving platform 21, and an axis slot is opened on the outer side of the fixing plate 25. The fixing plate 25 is evenly installed axially on the top of the moving platform 21, and the second motor 22 drives the rotating shaft 26 to rotate at the axis slot of the fixing plate 25 through the bearing. At the same time, during the rotation process, it drives the cable winding wheel 24 to rotate, and uses the fixed connection between one end of the steel cable 6 and the cable winding wheel 24 to make the steel cable 6 be wound around the surface of the cable winding wheel 24 under the rotation of the cable winding wheel 24, so that the steel cable 6 drives the hook 5 to move, and uses the hook 5 to hook the heavy object. During the movement, the heavy object is hooked, and the fixed plate 25 is located on both sides of the through slot, and a rotating shaft 26 is installed at the axis slot of the fixing plate 25, and the outer side of the rotating shaft 26 is rotatably connected to the axis slot of the fixing plate 25 through a bearing.
[0039] A cable reel 24 is fixedly installed on the outside of the rotating shaft 26. There are two cable reels 24, and the cable reels 24 are located between the fixed plates 25. One end of the steel cable 6 is fixedly connected to the cable reel 24 and the steel cable 6 is wound inside the cable reel 24. An arc cover 23 is fixedly installed between the fixed plates 25. The arc cover 23 is located above the cable reel 24. A second motor 22 is fixedly installed on the top of the moving platform 21. The output end of the second motor 22 is fixedly connected to one end of the rotating shaft 26. During the movement of the steel cable 6, the arc cover 23 is used to protect the steel cable 6 at the top of the cable reel 24. At the same time, during the movement of the steel cable 6, the steel cable 6 passes through the inside of the sponge tube 28. By utilizing the close fit between the inner wall of the sponge tube 28 and the surface of the steel cable 6, the surface of the steel cable 6 is cleaned during the passage of the steel cable 6, and the lubricating oil on the surface of the steel cable 6 is evenly applied. At the same time, the steel cable 6 is restricted by the inner slide tube 29 and the sponge tube 28, and the auxiliary pulley 15 pulls the steel cable 6 to prevent the steel cable 6 from swinging. The side groove frame 27 is fixedly installed at the through groove of the movable platform 21. The side groove frame 27 is symmetrically installed along the center position of the axis of the through groove, and the inner slide tube 29 is slidably installed between the side groove frames 27. The sponge tube 28 is fixedly installed on the inner wall of the inner slide tube 29. The steel cable 6 passes through the inside of the sponge tube 28, and the outer side of the steel cable 6 is in close contact with the inner wall of the sponge tube 28.
[0040] During use, workers remotely control the cable winding mechanism 2 and the driving mechanism 3, so that the cable winding mechanism 2 controls the winding of the steel cable 6, so that the end of the steel cable 6 away from the cable winding mechanism 2 drives the hook 5 to move up and down. When the hook 5 hooks the heavy object to be transported, the heavy object is lifted during the upward movement. At the same time, the driving mechanism 3 is cooperated with the driving mechanism 3 to drive the cable winding mechanism 2 to move between the main beams 1, thereby realizing the transportation of heavy objects.
[0041] When the weight of the lifting device is lifted, the spring 11 is released, and the spring 11 is released to the left and right sides of the lifting device 11, and the spring 11 is released to the right and left sides of the lifting device 11, so that the lifting device 11 is lifted and the lifting device 11 is in the right and left sides of the lifting device 11.
[0042] The cam 26 is connected to the drive shaft 24 so that the cable 6 is wound around the drive shaft 24 and the cable 6 is driven by the second motor 22. The cam 26 is connected to the drive shaft 24 so that the cable 6 is wound around the drive shaft 24 under the rotation of the cable 6. The cable 6 drives the hook 5 to move and the hook 5 is used to hook the weight during the movement.
[0043] In the driving mechanism 3, the reducer 32 is fixedly connected to the cable winding mechanism 2, so that the driving mechanism 3 and the cable winding mechanism 2 are fixed. At the same time, the first motor 34 drives the input shaft of the reducer 32 to rotate, so that the reducer 32 reduces the rotation speed and increases the torque. The output shaft drives the transmission shaft 35 to rotate, so that the transmission shaft 35 drives the pulley 33 to slide on the inner wall of the wheel groove plate 31, and drives the cable winding mechanism 2 to move between the main beams 1. When the cable winding mechanism 2 hooks a heavy object, it drives the heavy object to move for transportation and movement. At the same time, when the transmission shaft 35 rotates, it is supported between the transmission shaft 35 and the wheel groove plate 31 by the shaft pad 37, thereby reducing the wear on the transmission shaft 35.
[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.
[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A double-girder gantry crane with an anti-tilt structure, characterized in that: include: Main beams (1), the number of the main beams (1) is two, and end plates (7) are fixedly mounted on both ends of the main beams (1), the main beams (1) are fixedly connected via the end plates (7), and the bottoms of the end plates (7) are fixedly mounted with support legs (4); A cable winding mechanism (2), the cable winding mechanism (2) being installed between the main beams (1), and a driving mechanism (3) being installed on both sides of the cable winding mechanism (2), a steel cable (6) being fixedly installed inside the cable winding mechanism (2), the steel cable (6) being wound inside the cable winding mechanism (2), and a hook (5) being fixedly installed at the bottom end of the steel cable (6); The bottom of each main beam (1) is provided with a transverse groove, and a bottom slider (10) is slidably installed at the bottom of the main beam (1), the bottom slider (10) is slidably adapted to the transverse groove of the main beam (1), and a bottom pad (9) is fixedly installed at the bottom of the bottom slider (10), and a slot block (8) is fixedly installed at the bottom of the bottom pad (9), a rod groove is provided on the outer side of the slot block (8), and an inner slide rod (13) is slidably installed at the rod groove of the slot block (8), and a connecting block (14) is fixedly installed at one end of the inner slide rod (13) away from the slot block (8), and a rotating wheel (15) is rotatably installed on the outer side of the connecting block (14) through an axle rod, and a wheel groove is provided on the outer side of the rotating wheel (15), and the steel cable (6) is located at the wheel groove, and a spring (11) is fixedly installed between the connecting block (14) and the slot block (8).
2. The double-girder gantry crane with an anti-tilt structure according to claim 1, characterized in that: A side baffle (16) is fixedly mounted on the side of the connecting block (14) close to the rotating wheel (15), and the side baffle (16) close to the rotating wheel (15) is in contact with the outer side of the rotating wheel (15). A side slide (12) is fixedly mounted on the side of the connecting block (14) away from the rotating wheel (15). A plate groove is provided on the outer side of the slot block (8), and the side slide (12) is slidably fitted in the plate groove of the slot block (8).
3. The double-girder gantry crane with an anti-tilt structure according to claim 1, characterized in that: The driving mechanism (3) comprises a wheel groove plate (31) and a reducer (32), wherein the wheel groove plate (31) is fixedly mounted on the opposite side of the main beam (1), and the reducer (32) is fixedly mounted on the top of the cable winding mechanism (2), and the reducer (32) is symmetrically mounted along the center position of the axis of the cable winding mechanism (2).
4. The double-girder gantry crane with an anti-tilt structure according to claim 3, characterized in that: A first motor (34) is fixedly mounted on the outer side of the reducer (32), an output end of the first motor (34) is fixedly connected to an input shaft of the reducer (32), the output shaft of the reducer (32) is fixedly connected to a transmission shaft (35) via a coupling, and an end of the transmission shaft (35) away from the reducer (32) is fixedly connected to a pulley (33).
5. The double-girder gantry crane with an anti-tilt structure according to claim 4, characterized in that: The pulley (33) is slidably fitted with the inner wall of the wheel groove plate (31), and grooves are provided at the bottoms of the opposite surfaces of the wheel groove plate (31), and side sliders (36) are slidably mounted at the grooves of the wheel groove plate (31).
6. The double-girder gantry crane with an anti-tilt structure according to claim 5, characterized in that: The non-opposing surfaces of the side sliders (36) are tightly fitted with the outer sides of the wheel groove plate (31), and shaft pads (37) are fixedly mounted on the tops of the non-opposing surfaces of the side sliders (36), the bottoms of the shaft pads (37) are tightly fitted with the tops of the wheel groove plate (31), and the tops of the shaft pads (37) are arcuate surfaces, and the tops of the shaft pads (37) are rotationally adapted to the outer sides of the transmission shaft (35).
7. The double-girder gantry crane with an anti-tilt structure according to claim 1, characterized in that: The cable winding mechanism (2) comprises a movable platform (21), a through slot is symmetrically provided at the center of the bottom of the movable platform (21), and a fixed plate (25) is fixedly installed on the top of the movable platform (21), and an axis slot is provided on the outer side of the fixed plate (25).
8. The double-girder gantry crane with an anti-tilt structure according to claim 7, characterized in that: The fixed plate (25) is evenly installed along the axial direction on the top of the movable platform (21), and the fixed plate (25) is located on both sides of the through groove. A rotating shaft (26) is installed at the shaft groove of the fixed plate (25), and the outer side of the rotating shaft (26) is rotatably connected to the shaft groove of the fixed plate (25) through a bearing.
9. The double-girder gantry crane with an anti-tilt structure according to claim 8, characterized in that: A cable reel (24) is fixedly mounted on the outer side of the rotating shaft (26). There are two cable reels (24), and the cable reels (24) are located between the fixed plates (25). One end of the steel cable (6) is fixedly connected to the cable reel (24), and the steel cable (6) is wound inside the cable reel (24). An arc-shaped cover (23) is fixedly mounted between the fixed plates (25), and the arc-shaped cover (23) is located above the cable reel (24). A second motor (22) is fixedly mounted on the top of the movable platform (21), and an output end of the second motor (22) is fixedly connected to one end of the rotating shaft (26).
10. The double-girder gantry crane with an anti-tilt structure according to claim 9, characterized in that: A side groove frame (27) is fixedly installed at the through groove of the movable platform (21), and the side groove frame (27) is symmetrically installed along the center position of the axis of the through groove, and an inner slide cylinder (29) is slidably installed between the side groove frames (27), and a sponge cylinder (28) is fixedly installed on the inner wall of the inner slide cylinder (29), and the steel cable (6) passes through the inside of the sponge cylinder (28), and the outer side of the steel cable (6) is tightly fitted with the inner wall of the sponge cylinder (28).