Portal crane capable of reducing shaking

Abstract

The gantry crane comprises a frame body, a fixing frame is fixed to the inner position of the top end of the frame body through locking threads, and two hydraulic motors are fixed to one side of the fixing frame; the outer side of the periphery of the bottom of the movable frame is connected with the top end position of a guide telescopic rod, and the bottom position of the guide telescopic rod is fixed to the top position of the lifting frame. According to the gantry crane capable of reducing shaking, the hydraulic pump assembly is arranged, and the hydraulic pump assembly drives the threaded lifting rod to move stably, so that goods limited by the lifting frame and the inner side of the turning plate move stably, and the phenomenon that the goods shake can be avoided; and the friction blocks and the negative pressure suction cups are arranged in a limiting mode so that goods can be limited in multiple selections, and the arranged walking module can avoid the phenomenon that iron blocks on the site make contact with one another to cause damage.

Description

Technical Field

[0001] The present invention relates to the technical field related to cranes, and in particular to a gantry crane capable of reducing shaking. Background Art

[0002] Gantry crane is a branch of bridge crane, mainly used for loading and unloading of outdoor cargo yards, material yards and bulk cargo. Two legs are installed under the main beam, which can walk directly on the ground track. Both ends of the main beam can have an extended cantilever beam, and the operation of lifting cargo is achieved by retracting and releasing the steel cable. There are many types of existing gantry cranes, such as: A multi-point lifting gantry crane disclosed in publication number CN117401584B, during the lifting process of the crane, the rising lifting threaded rod drives the resistance plate to move, and then the lifting clamp is driven by the traction cable, so that the lifting clamp moving inward can expand the main elastic airbag and inhale air, so that the lifting clamp is in contact with the outer wall of the cargo and is adsorbed to the outer wall of the cargo through the adsorption positioning plate; by setting up a negative pressure adsorption process, when facing different cargoes, especially when lifting boxes with corrugated surfaces, the negative pressure adsorption mechanism cannot achieve the expected effect when used, and may even cause the cargo to fall.

[0003] The gantry crane disclosed in the publication number CN104192725A uses a modular vehicle as a walking chassis, which greatly enhances its adaptability to the site and does not require pre-laid tracks. This not only greatly reduces the cost of use, but also saves time; and due to its multi-mode steering characteristics, it is flexible in operation, occupies a small space for operation, and can be lifted, jacked and transported over short distances, and the transportation route is not restricted by the track. It has high reliability and is easy to operate and can meet the lifting operation requirements of various working conditions; however, when the above device is in use, a walking module is set to enable the device to be adjusted in multiple directions flexibly. When the rollers at the bottom of the gantry crane are in contact with the ground and walking, the rollers at the bottom may come into contact with larger iron blocks, causing the rollers at the bottom to be damaged and the equipment to be damaged; The intelligent gantry crane disclosed in the publication number CN115504383A can drive the lifting plate and the workpieces and goods under it to lift stably through the lifting mechanism, prevent the ground personnel from being too close to the product and causing safety hazards such as injury, and avoid the materials or operating environment in special application scenarios that may cause harm to the human body. It can automatically grab the workpieces and goods, and can expand the operator's field of view and line of sight to avoid problems such as improper command by ground commanders, incorrect gesture recognition, and inability to accurately convey intentions during operation, thereby preventing misoperation. The above-mentioned device drives the height adjustment of the goods through the lifting assembly that is set. The lifting assembly includes a lifting ear, a hook, and a lifting rope. If the center of gravity of the goods is unstable during the lifting process, the goods may shake and fall when they are moved and lifted.

[0004] Therefore, we propose a gantry crane with reduced sway in order to solve the problems mentioned above. Summary of the invention

[0005] The purpose of the present invention is to provide a gantry crane with reduced shaking, so as to solve the problem raised in the above background technology that the gantry cranes currently on the market only use a lifting mechanism when lifting and rotating goods, which easily causes the goods to shake when moving, and have certain shortcomings when moving.

[0006] To achieve the above object, the present invention provides the following technical solution: a gantry crane with reduced shaking, comprising a frame, a set of fixing frames are fixed to the inner position of the top of the frame through locking threads, and two sets of hydraulic motors are fixed to one side of the fixing frames; Also includes: The output end of the hydraulic motor is fixed at one end of the screw, the outer side of the screw is threadedly connected to the moving frame, and the front and rear outer sides of the moving frame extend out of the slide slot provided on the fixed frame; A group of threaded lifting rods are threadedly connected at the inner center of the mobile frame, and the outer sides of the bottom of the mobile frame are connected to the top of the guide telescopic rod, and the bottom of the guide telescopic rod is fixed to the top of the hanging frame; A group of hydraulic pump components is fixed at the top center position of the hanging frame, the output end position of the hydraulic pump component is connected to the bottom end position of the threaded lifting rod through a locking piece, and a group of flaps are rotatably connected to the left and right sides of the hanging frame, the oil outlet position of the hydraulic pump component is connected to one side position of the connecting pipe and the dredging pipe, the bottom of the dredging pipe is connected to the side of the fixed block, the inner side position of the fixed block is slidably provided with a friction block, and the top upper position of the fixed block is provided with a negative pressure suction cup; A group of supporting members are fixed at both sides of the bottom of the frame.

[0007] Preferably, a group of movable tooth plates slide out from the outer side of the connecting tube, and a piston block is fixed at one end of the movable tooth plate extending into the interior of the connecting tube, and one side of the piston block is connected to the interior of the connecting tube through a spring. A rotating gear is meshed and connected to the bottom outer side of the movable tooth plate, and the center point of the rotating gear is fixed at the axial end of the flap. Through the delivery of hydraulic oil, the flap can be flipped by rotating the rotating gear, which can adapt to goods of different sizes.

[0008] Preferably, a group of valves are provided on the outside of the connecting tube, the inside of the piston block fits tightly against the inner wall of the connecting tube, the movable tooth plate forms a sliding structure between the piston block, the hydraulic oil and the inside of the connecting tube, the rotation range of the flap is -45°-45°, and the movable tooth plate slides stably inside the connecting tube through the piston block, thereby realizing the rotation of the rotating gear at the end position of the lifting frame.

[0009] Preferably, a cavity is provided inside the fixed block, and the inner side of the cavity inside the fixed block is in close contact with the inner wall of the friction block extending into the fixed block. The friction block forms a sliding structure with the inside of the fixed block through hydraulic oil, so that the friction block slidingly arranged inside the fixed block can slide stably, and the outer side of the friction block can be made to fit the outer side of the cargo through the delivery of hydraulic oil.

[0010] Preferably, the upper and middle ends of the dredging tube are provided with hoses, and the lower end of the dredging tube is provided with a hard tube. A group of impellers are rotatably provided inside the dredging tube, and the top position of the impellers is rotatably provided at the bottom position of the connecting rod. The top position of the connecting rod is connected to the outer end of the negative pressure suction cup through a bevel gear. The setting of the hose can prevent the flap from breaking when the angle is rotated.

[0011] Preferably, the interior of the negative pressure suction cup includes a threaded tube connected to a bevel gear, the outer side of the threaded tube is threadedly connected to the outer side of the rod, a suction cup is provided on the outer side of the slidable rod, the outer side of the suction cup fits into the interior of the negative pressure suction cup, and a variety of rotational clamping processes can be performed through the coordination of the negative pressure suction cup and the friction block.

[0012] Preferably, the interior of the locking member includes a pull rod and a slip ring, the pull rod is slidably arranged inside the slip ring, and the outer side of the slip ring is connected to the head end position of the return spring, and the tail end position of the return spring is fixedly connected to the outer side of the pull rod, so as to avoid the delivery of hydraulic oil to cause the lifting frame to move stably when clamping goods.

[0013] Preferably, the pull rod extends into an embedding hole opened at the bottom of the threaded lifting rod, and the embedding holes are provided with a plurality of holes at equal angles with respect to the center position of the threaded lifting rod. The slip ring is slidably arranged at the outer position of the output end of the hydraulic pump assembly, which can facilitate multi-position limiting processing of the threaded lifting rod.

[0014] Preferably, the oil outlet on the other side of the hydraulic motor is connected to an oil pipe, the oil pipe is arranged on the outside of the frame, the bottom end of the oil pipe is connected to a side surface of the support, a group of valve components are installed at the outside of the bottom end of the oil pipe, the interior of the support includes a sealed oil chamber fixed at the bottom position of the frame, a piston rod is fitted inside the sealed oil chamber, the bottom position of the piston rod is fixed at the top position of the moving roller, the moving roller is arranged on the inner side of the support frame, the left and right sides of the support frame are fixed with fitting support blocks, and the front and rear sides of the support frame are provided with grooves, and a debris removal block extends out of the groove, so that the position of the walking module can be adjusted, which can be convenient for moving and temporarily fixing.

[0015] Preferably, the bottom of the fitting support block is set at an acute angle, and the bottom end position of the fitting support block is set flush with the bottom end position of the moving roller, and one side of the debris removing block is fixed at the outer position of the moving roller. The coordinated setting of the debris removing block can facilitate contact with iron blocks on the walking road, thereby avoiding damage to the roller and equipment caused by the setting of the iron blocks.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the gantry crane with reduced shaking is provided with a hydraulic pump assembly, which drives the threaded lifting rod to move stably, so that the goods limited by the lifting frame and the inner position of the flap can move stably, thereby avoiding the shaking of the goods, and the friction block and the negative pressure suction cup limiting mode are provided to provide a variety of selections for limiting the goods, and the walking module provided can avoid the phenomenon of contact with the iron blocks on the site and causing damage. The specific contents are shown as follows: 1. A hydraulic pump assembly is provided. The output end of the hydraulic pump assembly rotates slowly through the cooperation of the locking piece, and the threaded lifting rod also rotates. The threaded lifting rod rotates and moves inside the mobile frame. The threaded lifting rod will drive the hoisting frame to adjust the height. At this time, the guide telescopic rod set on the top of the hoisting frame contracts or extends to avoid the shaking of the goods. 2. A connecting pipe is provided, and the piston block fitted inside the connecting pipe will drive the movable tooth plate to move, so that the movable tooth plate will drive the meshing rotating gear to rotate, and the rotating gear drives the flap to flip and the inner side of the flap is fitted to the outer side of the goods, which can facilitate the limited handling of the goods in the later stage; Furthermore, by delivering hydraulic oil to the interior of the fixed block, the friction block arranged in close contact with the interior of the fixed block will move, and the friction block will be closely attached to the outside of the cargo, thereby limiting the position of the cargo; Furthermore, the impeller arranged inside the dredging pipe rotates through the circulation of hydraulic oil, causing the impeller to drive the connecting rod to rotate, so that when the suction cup inside the negative pressure suction cup moves through the thread, the absorption treatment of the gas can be carried out by negative pressure fixing treatment, and the limit treatment is carried out by the selectivity of the two groups, which can effectively prevent the cargo from falling; 3. A debris removal block is provided, and the sealed oil chamber inside the support is filled with hydraulic oil, so that the piston rod will drive the moving roller to rise and fall in height, and the moving roller will drive the debris removal block to move together. When the frame is moving, the debris removal block can push away the iron blocks in the straight line position, thereby facilitating the movement of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the fixing frame of the present invention; Figure 4 This is a schematic diagram of the main structure of the hanging frame of the present invention; Figure 5 It is a schematic diagram of the front cross-sectional structure of the locking member of the present invention; Figure 6 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the main cross-sectional structure of the communication pipe of the present invention; Figure 8 This is a schematic diagram of the main structure of the fixing block of the present invention; Fig. 9 This is a schematic diagram of the main structure of the valve of the present invention; Fig.10 This is a schematic diagram of the front cross-sectional structure of the support frame of the present invention; Fig.11 It is a schematic diagram of the cross-sectional structure of the negative pressure suction cup of the present invention.

[0018] In the figure: 1. frame; 2. fixed frame; 3. hydraulic motor; 4. screw; 5. mobile frame; 6. slide; 7. threaded lifting rod; 8. guide telescopic rod; 9. hydraulic pump assembly; 10. lifting frame; 11. locking piece; 111. pull rod; 112. slip ring; 113. reset spring; 12. embedding hole; 13. connecting pipe; 14. moving tooth plate; 141. piston block; 15. rotating gear; 16. flap; 17. dredging pipe; 18. fixed block; 19. friction block; 20. impeller; 21. connecting rod; 22. negative pressure suction cup; 23. oil pipeline; 24. valve assembly; 25. support member; 251. sealing oil chamber; 252. piston rod; 253. moving roller; 254. support frame; 255. fitting support block; 256. debris removal block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 11 , the present invention provides the following technical solutions: Example 1: In order to prevent the goods from shaking due to the unstable center of gravity during work, please refer to the attached Figure 1 -Attached Figure 3, including a frame 1, a group of fixed frames 2 are fixed to the internal position of the top of the frame 1 through locking threads, and two groups of hydraulic motors 3 are fixed to one side of the fixed frame 2; it also includes: the output end position of the hydraulic motor 3 is fixed to one end position of the screw rod 4, the outer position of the screw rod 4 is threadedly connected to the mobile frame 5, and the front and rear outer positions of the mobile frame 5 extend out of the slide groove 6 opened by the fixed frame 2; a group of threaded lifting rods 7 are threadedly connected to the inner center position of the mobile frame 5, and the outer sides of the bottom of the mobile frame 5 are connected to the top position of the guide telescopic rod 8, and the bottom position of the guide telescopic rod 8 is fixed to the top position of the hanging frame 10; a group of hydraulic pump machine components 9 are fixed to the top center position of the hanging frame 10, and the output end position of the hydraulic pump machine component 9 is connected to the bottom end position of the threaded lifting rod 7 through a locking piece 11, and a group of flaps 16 are rotatably connected to the left and right sides of the hanging frame 10, and the oil outlet position of the hydraulic pump machine component 9 is connected to one side position of the connecting pipe 13 and the dredging pipe 17, and the bottom of the dredging pipe 17 is connected to the side of the fixed block 18 The fixed block 18 is connected to each other, and a friction block 19 is slidably provided on the inner side of the fixed block 18, and a negative pressure suction cup 22 is provided on the top of the fixed block 18; when using the equipment, the equipment is first placed in the designated position, and then when the lifting frame 10 is raised and lowered, the hydraulic pump assembly 9 is started to make the output end of the hydraulic pump assembly 9 work, and at this time, the output end of the hydraulic pump assembly 9 is slowly rotated by the matching setting of the locking piece 11, and the threaded lifting rod 7 will also rotate, so that the threaded lifting rod 7 can be threadedly rotated and moved inside the mobile frame 5, and the threaded lifting rod 7 will drive the lifting frame 10 to adjust the height, and at this time, the guide telescopic rod 8 set on the top of the lifting frame 10 is contracted or extended, so that the lifting frame 10 no longer shakes when moving, and the two sets of hydraulic motors 3 respectively drive the two sets of screws 4 to rotate, so that the mobile frame 5 can stably slide inside the slide 6 through the screws 4, and the position of the goods can be effectively adjusted and shaking can be prevented.

[0021] Embodiment 2: In order to facilitate the multi-selection limit processing, please refer to the attached Figure 4 -Attached Figure 8 and attached Fig.11A group of movable toothed plates 14 slide out from the outer side of the connecting tube 13. A piston block 141 is fixed at one end of the movable toothed plate 14 extending into the connecting tube 13. One side of the piston block 141 is connected to the inside of the connecting tube 13 through a spring. A rotating gear 15 is meshed and connected to the outer side of the bottom of the movable toothed plate 14. The center of the rotating gear 15 is fixed to the axial end of the flap 16. A group of valves are arranged on the outer side of the connecting tube 13. The inside of the piston block 141 is tightly attached to the inner wall of the connecting tube 13. The movable toothed plate 14 forms a sliding structure with the inside of the connecting tube 13 through the piston block 141 and the hydraulic oil. The rotation range of the flap 16 is -45°-45°. A cavity is provided inside the fixed block 18. The inner side of the cavity inside the fixed block 18 is tightly attached to the friction block 19 extending into the inner wall of the fixed block 18. The friction block 19 forms a sliding structure with the inside of the fixed block 18 through the hydraulic oil. The upper and middle ends of the dredging tube 17 are provided with a hose, and the lower end of the dredging tube 17 is provided with a hard tube. A group of impellers 20 are rotatably provided inside the dredging tube 17. The top position of the impeller 20 is rotatably provided at the bottom position of the connecting rod 21. The top position of the connecting rod 21 is connected to the outer end of the negative pressure suction cup 22 through a bevel gear. The inside of the negative pressure suction cup 22 includes a threaded tube connected to the bevel gear. The outer side of the threaded tube is threadedly connected to the outer side of the rod. A suction cup is provided on the outer side of the slidingly arranged rod. The outer side of the suction cup is fitted to the inside of the negative pressure suction cup 22. The inside of the locking member 11 includes a pull rod 111 and a slip ring 112. The pull rod 111 is slidably provided inside the slip ring 112. The outer side of the slip ring 112 is connected to the head end position of the reset spring 113. The tail end position of the reset spring 113 is fixedly connected to the outer side of the pull rod 111. The pull rod 111 extends into the embedding hole 12 opened at the bottom of the threaded lifting rod 7. The embedding holes 12 are provided with a plurality of holes at equal angles with respect to the center position of the threaded lifting rod 7. The slip ring 112 is slidably arranged at the outer position of the output end of the hydraulic pump assembly 9.First, ensure that the lifting frame 10 is lowered to the top position of the cargo. At this time, by pulling the pull rod 111, the return spring 113 on one side of the pull rod 111 is moved out of the embedded hole 12. When the hydraulic pump assembly 9 is started again, the hydraulic pump assembly 9 will not drive the threaded lifting rod 7 to rotate. At this time, by closing the valve on one side of the dredging pipe 17, the hydraulic pump assembly 9 will flow into the inside of the connecting pipe 13 when the oil is discharged, so that the piston block 141 fitted inside the connecting pipe 13 will drive the moving tooth plate 14 to move, so that the moving tooth plate 14 will drive the meshing rotating gear 15 to rotate, causing the rotating gear 15 to drive the flap 16 to flip, so that the inner side of the flap 16 fits against the outside of the cargo, and the connecting pipe is locked. The valve of the pipe 13 is closed, and the valve of the dredging pipe 17 is opened. At this time, the hydraulic oil will also be transported to the inside of the fixed block 18, so that the friction block 19 arranged in a close relationship inside the fixed block 18 will move, and the friction block 19 will be close to the outside of the goods, thereby limiting the position of the goods, and in further limiting the position, the impeller 20 arranged inside the dredging pipe 17 is rotated by the circulation of hydraulic oil, causing the impeller 20 to drive the connecting rod 21 to rotate, so that the suction cup inside the negative pressure suction cup 22 is fixed by negative pressure. The limiting process is carried out by the selectivity of the two groups, which can effectively prevent the goods from falling, and also close the valve of the dredging pipe 17, and then extend one end of the pull rod 111 into the inside of the embedding hole 12, so as to facilitate the lifting process.

[0022] Embodiment 3: In order to prevent the iron blocks in the factory from affecting the walking module of the frame 1 when the frame 1 is driven to move, please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Fig. 9 and attached Fig.10A group of support members 25 are fixed on both sides of the bottom of the frame 1, and an oil pipe 23 is connected to the oil outlet on the other side of the hydraulic motor 3. The oil pipe 23 is arranged on the outside of the frame 1, and the bottom end of the oil pipe 23 is connected to one side of the support member 25. A group of valve assemblies 24 are installed on the outside of the bottom end of the oil pipe 23. The interior of the support member 25 includes a sealed oil chamber 251 fixed to the bottom of the frame 1, and a piston rod 252 is fitted inside the sealed oil chamber 251. The bottom position of the piston rod 252 is fixed to the top position of the moving roller 253, and the moving roller 253 is arranged on the inner side of the support frame 254. Fitting support blocks 255 are fixed on the left and right sides of the support frame 254. In addition, grooves are opened on the front and back sides of the support frame 254, and a debris removal block 256 extends out from the inside of the groove. The bottom of the fitting support block 255 is set at an acute angle, and the bottom end position of the fitting support block 255 is set flush with the bottom end position of the moving roller 253, and one side of the debris removal block 256 is fixed to the outer position of the moving roller 253. When the hoisting frame 10 is raised, the valve assembly 24 can be opened, and the hydraulic oil will also be transported through the oil pipe 23, so that the sealed oil chamber 251 inside the support member 25 is filled with hydraulic oil, so that the piston rod 252 will drive the moving roller 253 to move up and down. At this time, the support frame 254 will be off the ground, and the moving roller 253 will drive the debris removal block 256 to move together. When the frame 1 is driven to move by the driving device, the debris removal block 256 can push away the iron blocks in the straight position, thereby facilitating the movement of the frame 1.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gantry crane with reduced shaking, comprising a frame (1), a set of fixing frames (2) being fixed at the top inner position of the frame (1) by means of locking threads, and two sets of hydraulic motors (3) being fixed at one side of the fixing frame (2); It is characterized in that Also includes: The output end of the hydraulic motor (3) is fixed at one end of the screw rod (4), the outer side of the screw rod (4) is threadedly connected to the movable frame (5), and the front and rear outer sides of the movable frame (5) extend out of the sliding groove (6) provided on the fixed frame (2); A group of threaded lifting rods (7) are threadedly connected at the inner center of the mobile frame (5), and the outer sides of the bottom of the mobile frame (5) are connected to the top of the guide telescopic rod (8), and the bottom of the guide telescopic rod (8) is fixed to the top of the hanging frame (10); A group of hydraulic pump components (9) is fixed at the top center position of the hanging frame (10), the output end position of the hydraulic pump component (9) is connected to the bottom end position of the threaded lifting rod (7) through a locking piece (11), and a group of flaps (16) are rotatably connected to the left and right sides of the hanging frame (10), the oil outlet position of the hydraulic pump component (9) is connected to a side position of the connecting pipe (13) and the dredging pipe (17), the bottom of the dredging pipe (17) is connected to the side of the fixed block (18), the inner side position of the fixed block (18) is slidably provided with a friction block (19), and the top upper position of the fixed block (18) is provided with a negative pressure suction cup (22); A group of support members (25) are fixed at both sides of the bottom of the frame (1).

2. A gantry crane with reduced sway according to claim 1, characterized in that: A group of movable tooth plates (14) are slid out from the outer side of the connecting tube (13); a piston block (141) is fixed to one end of the movable tooth plate (14) extending into the interior of the connecting tube (13); one side of the piston block (141) is connected to the interior of the connecting tube (13) via a spring; a rotating gear (15) is meshedly connected to the outer side of the bottom of the movable tooth plate (14); the center of the rotating gear (15) is fixed to the axial end of the flap (16).

3. A gantry crane with reduced sway according to claim 2, characterized in that: A group of valves are arranged on the outside of the connecting pipe (13); the inside of the piston block (141) is tightly fitted to the inner wall of the connecting pipe (13); the movable tooth plate (14) forms a sliding structure between the piston block (141) and the hydraulic oil and the inside of the connecting pipe (13); and the rotation range of the flap (16) is -45° to 45°.

4. A gantry crane with reduced sway according to claim 1, characterized in that: A cavity is provided inside the fixed block (18), the inner side of the cavity inside the fixed block (18) is tightly attached to the inner wall of the friction block (19) extending into the fixed block (18), and the friction block (19) forms a sliding structure with the inside of the fixed block (18) through hydraulic oil.

5. The gantry crane with reduced sway according to claim 1, characterized in that: The upper end and the middle end of the dredging pipe (17) are arranged as a hose, and the lower end of the dredging pipe (17) is arranged as a hard pipe. A group of impellers (20) are rotatably arranged inside the dredging pipe (17). The top position of the impeller (20) is rotatably arranged at the bottom position of the connecting rod (21). The top position of the connecting rod (21) is connected to the outer end of the negative pressure suction cup (22) via a bevel gear.

6. A gantry crane with reduced sway according to claim 5, characterized in that: The interior of the negative pressure suction cup (22) includes a threaded tube connected to a bevel gear, the outer side of the threaded tube is threadedly connected to the outer side of the rod, and a suction cup is arranged on the outer side of the slidably arranged rod, and the outer side of the suction cup is fitted into the interior of the negative pressure suction cup (22).

7. The gantry crane with reduced sway according to claim 1, characterized in that: The interior of the locking member (11) includes a pull rod (111) and a slip ring (112); the pull rod (111) is slidably arranged inside the slip ring (112); the outer side of the slip ring (112) is connected to the head end of a return spring (113); and the tail end of the return spring (113) is fixedly connected to the outer side of the pull rod (111).

8. A gantry crane with reduced sway according to claim 7, characterized in that: The pull rod (111) extends into an embedding hole (12) provided at the bottom of the threaded lifting rod (7), and a plurality of the embedding holes (12) are provided at equal angles with respect to the center position of the threaded lifting rod (7). The slip ring (112) is slidably arranged at an outer position of the output end of the hydraulic pump assembly (9).

9. The gantry crane with reduced sway according to claim 1, characterized in that: An oil delivery pipe (23) is connected to the oil outlet on the other side of the hydraulic motor (3). The oil delivery pipe (23) is arranged on the outside of the frame (1). The bottom end of the oil delivery pipe (23) is connected to a side surface of the support member (25). A group of valve components (24) are installed on the outside of the bottom end of the oil delivery pipe (23). The support member (25) includes a sealed oil chamber (251) fixed to the bottom of the frame (1). A piston rod (252) is fitted inside the sealed oil chamber (251). The bottom of the piston rod (252) is fixed to the top of a movable roller (253). The movable roller (253) is arranged on the inside of the support frame (254). Fitting support blocks (255) are fixed on the left and right sides of the support frame (254). In addition, grooves are provided on the front and rear sides of the support frame (254), and a debris removal block (256) extends out from the groove.

10. A gantry crane with reduced sway according to claim 9, characterized in that: The bottom of the laminating support block (255) is arranged at an acute angle, and the bottom end of the laminating support block (255) is arranged flush with the bottom end of the movable roller (253), and one side of the impurity removal block (256) is fixed to the outer side of the movable roller (253).

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