Gantry crane

Abstract

The utility model provides a gantry crane, which relates to the technical field of cranes, and comprises a base, the surface of the base is in sliding connection with a sliding column, the top end of the sliding column is fixedly provided with a limiting plate, the surface of the limiting plate is in threaded connection with a screw rod, and the surface of the screw rod is fixedly provided with a rotating handle. A bottom plate is fixedly installed at the bottom end of the sliding column, universal wheels are fixedly installed at the bottom end of the base, by arranging the base, the sliding column, the limiting plate, the screw rod, the rotating handle, the bottom plate and the universal wheels, when the crane needs to be moved, the bottom plate can be lifted up to be away from the ground through screwing, then a support of the crane is pushed, and the universal wheels at the bottom end of the bottom plate start to work; the crane is more convenient to move, the flexibility of the crane is improved, the working intensity of workers is relieved, the eight bottom plates are installed at the two ends of the two bases of the crane, the friction force between the crane and the ground is greatly increased, and the crane is more stable in use.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a gantry crane. Background Art

[0002] Gantry crane is a variation of bridge crane. In ports, it is mainly used for loading and unloading operations of outdoor cargo yards, material yards, and bulk cargo. Its metal structure is like a door-shaped frame, with two legs installed under the load-bearing main beam, which can walk directly on the ground track. Both ends of the main beam can have outward cantilever beams. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. They are widely used in port cargo yards. Publication No. CN208234411U discloses a gantry crane, including a fixed frame and a crossbeam boom installed between the fixed frames, and also includes a control room, a conveyor belt, a photoelectric counting sensor and an electric hoist. The lower surface of the crossbeam boom is slidably connected to the electric hoist, and a control room is arranged on the upper surface. A controller is arranged in the control room. A solar power generation film is arranged on the outer surface, the solar power generation film is connected to a battery, the controller is connected to an electric hoist, the battery is respectively connected to the electric hoist and the controller, the photoelectric counting sensor is arranged on a fixed frame, the photoelectric counting sensor is connected to the controller, the conveyor belt is arranged under the photoelectric sensor, the feeding end of the conveyor belt is arranged under the crossbeam boom, and the discharging end is connected to the transport device. In actual application of the above technology, after the crane is placed, it is troublesome to move the gantry crane, which increases the work intensity of the staff, is inconvenient to move, can only be used in a certain area, and has a limited scope of use, and needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a gantry crane comprises a base, a sliding column is slidably connected to the surface of the base, a limit plate is fixedly installed on the top of the sliding column, a screw is threadedly connected to the surface of the limit plate, a handle is fixedly installed on the surface of the screw, a bottom plate is fixedly installed on the bottom end of the sliding column, a universal wheel is fixedly installed on the bottom end of the base, a bracket is fixedly installed on the surface of the base, a crossbeam is fixedly installed on the surface of the bracket, a first motor is fixedly installed on the side of the bracket, a screw is fixedly installed on the output end of the first motor, a sliding block is slidably connected to the surface of the screw, and a lifting device is fixedly installed on the bottom end of the sliding block.

[0005] Preferably, the lifting device includes a rope winding bin, a second motor is fixedly mounted on the surface of the rope winding bin, a rope winding rod is fixedly mounted on the output end of the second motor, and a rope hook is surrounded on the surface of the rope winding rod. Here, the lifting device can achieve the lifting effect by lifting the heavy object with the rope hook. When in use, the first motor is turned on, and the output power of the first motor drives the screw rod to rotate. After the lifting device is adjusted to a suitable position, the second motor is turned on to release the rope. After the rope hook is placed, the second motor is turned on again, and the second motor drives the rope winding rod to rotate, so that the rope hook is tightened, thereby completing the lifting work.

[0006] Preferably, the shape of the turning handle is valve-shaped, and the side of the bracket is trapezoidal. Here, the valve-shaped turning handle can increase the friction with the hands of the personnel. When the crane needs to be moved, the bottom plate can be twisted to lift it away from the ground, and then the bracket of the crane is pushed, and the universal wheel at the bottom of the bottom plate starts to work, which makes it more convenient to move the crane, improves the flexibility of the crane, and the trapezoidal bracket is more stable.

[0007] Preferably, the base is rotatably connected to the screw rod, and the length of the screw rod is greater than the length of the sliding column. Here, one end of the screw rod is connected to the limit plate by a thread, and the other end is rotatably connected to the base. When the operator turns the handle, the screw rod starts to rotate, so that the limit plate can move up and down, thereby realizing the up and down movement of the sliding column. When the length of the screw rod is greater than the sliding column, the sliding column can be fully tightened, thereby improving the stability of the crane.

[0008] Preferably, the number of the screw rods is four groups, and the four groups of screw rods are symmetrically distributed on the surface of the base. Here, when the crane is moved to a suitable position, a bottom plate is needed to fix the entire crane. Bottom plates are installed at both ends of the two bases of the crane, with a total of eight bottom plates, which greatly increases the friction with the ground, making the crane more stable when in use.

[0009] Preferably, a cover is rotatably connected to the surface of the bracket, a fixing block is fixedly installed on the surface of the cover, and a bolt is threadedly connected between the fixing block and the bracket. Here, the crane is mostly in an outdoor environment, the first motor is often corroded by rain, and the service life of the first motor is greatly reduced. The use of the cover can effectively protect the first motor, and the rotatably connected cover makes it more convenient to maintain the first motor.

[0010] Preferably, a heat dissipation hole is provided on the surface of the bracket, and the heat dissipation hole is located behind the first motor. Here, the first motor generates a large amount of heat when working, and the heat dissipation hole can effectively accelerate the release of the heat generated by the first motor.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, by arranging a base, a sliding column, a limit plate, a screw rod, a handle, a bottom plate, and a universal wheel structure, when the crane needs to be moved, the bottom plate can be twisted to lift it away from the ground, and then the bracket of the crane is pushed, and the universal wheel at the bottom end of the bottom plate starts to work, which makes it more convenient to move the crane, improves the flexibility of the crane, and reduces the work intensity of the staff. Bottom plates are installed at both ends of the two bases of the crane, with a total of eight bottom plates, which greatly increases the friction with the ground, making the crane more stable when in use. By arranging a bracket, a crossbeam, a first motor, a screw rod, a sliding block, and a lifting device structure, the lifting device can achieve the lifting effect by lifting the heavy object by hooking the rope. When in use, the first motor is turned on, and the output power of the first motor drives the screw rod to rotate. Then, after the lifting device is adjusted to a suitable position, the second motor is turned on to release the rope. After the rope hook is placed, the second motor is turned on again, and the second motor drives the rope rod to rotate, so that the rope hook is tightened, thereby completing the lifting work.

[0013] 2. In the utility model, by setting heat dissipation holes, covers, fixing blocks and bolt structures, cranes are mostly in outdoor environments, the first motor is often corroded by rain, and the service life of the first motor is greatly reduced. The cover can effectively protect the first motor, and the rotatably connected cover is more convenient for maintaining the first motor. The first motor generates a lot of heat when working, and the heat dissipation holes can effectively accelerate the release of heat generated by the first motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a gantry crane is proposed for the utility model;

[0015] Figure 2 A schematic diagram of a base of a gantry crane is provided for the utility model;

[0016] Figure 3 A schematic diagram of a lifting device of a gantry crane is provided for the utility model;

[0017] Figure 4 The utility model provides a schematic diagram of a first motor of a gantry crane.

[0018] Legend:

[0019] 1. Base; 2. Sliding column; 3. Limiting plate; 4. Screw; 5. Turning handle; 6. Bottom plate; 7. Bracket; 8. Crossbeam; 9. First motor; 10. Screw; 11. Sliding block; 12. Rope winding bin; 13. Second motor; 14. Rope winding rod; 15. Rope hook; 16. Heat dissipation hole; 17. Cover; 18. Fixing block; 19. Bolt; 20. Universal wheel. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1

[0023] See also Figure 1-4 The utility model provides a technical solution: a gantry crane comprises a base 1, a sliding column 2 is slidably connected to the surface of the base 1, a limit plate 3 is fixedly installed on the top of the sliding column 2, a screw 4 is threadedly connected to the surface of the limit plate 3, a handle 5 is fixedly installed on the surface of the screw 4, a bottom plate 6 is fixedly installed on the bottom end of the sliding column 2, a universal wheel 20 is fixedly installed on the bottom end of the base 1, a bracket 7 is fixedly installed on the surface of the base 1, a crossbeam 8 is fixedly installed on the surface of the bracket 7, a first motor 9 is fixedly installed on the side of the bracket 7, a screw rod 10 is fixedly installed on the output end of the first motor 9, a sliding block 11 is slidably connected to the surface of the screw rod 10, a lifting device is fixedly installed on the bottom end of the sliding block 11, the lifting device comprises a rope winding bin 12, a second motor 13 is fixedly installed on the surface of the rope winding bin 12, a rope winding rod 14 is fixedly installed on the output end of the second motor 13, a rope hook 15 is surrounded on the surface of the rope winding rod 14, and the lifting device can lift the heavy object by hooking the rope 15 to achieve the lifting effect, and the first motor 9 is turned on when in use, and the first motor 9 outputs power The rate drives the screw rod 10 to rotate, and then after the lifting device is adjusted to a suitable position, the second motor 13 is turned on to release the rope. After the rope hook 15 is placed, the second motor 13 is turned on again. The second motor 13 drives the rope winding rod 14 to rotate, so that the rope hook 15 is tightened, thereby completing the lifting work. The base 1 is rotatably connected with the screw rod 4. The length of the screw rod 4 is greater than the length of the sliding column 2. One end of the screw rod 4 is connected to the limit plate 3 by a thread, and the other end of the base 1 is rotatably connected. When the personnel twists the handle 5, the screw rod 4 starts to rotate, so that the limit plate 3 can move up and down, thereby realizing the up and down movement of the sliding column 2. When the length of the screw rod 4 is greater than the sliding column 2, the sliding column 2 can be completely tightened, which improves the stability of the crane. The number of screw rods 4 is four groups, and the four groups of screw rods 4 are symmetrically distributed in pairs on the surface of the base 1. When the crane moves to a suitable position, it is necessary to use a bottom plate 6 to fix the entire crane. Bottom plates 6 are installed at both ends of the two bases 1 of the crane, with a total of eight bottom plates 6, which greatly increases the friction with the ground, making the crane more stable when in use.

[0024] Embodiment 2

[0025] See also Figure 4 The shape of the turning handle 5 is valve-shaped, and the side of the bracket 7 is trapezoidal. The valve-shaped turning handle 5 can increase the friction with the hands of the personnel. When the crane needs to be moved, the base plate 6 can be twisted to lift it away from the ground, and then the bracket 7 of the crane is pushed, and the universal wheel 20 at the bottom of the base plate 6 starts to work, which is more convenient to move the crane and improves the flexibility of the crane. The trapezoidal bracket 7 is more stable. The surface of the bracket 7 is rotatably connected with a cover 17, and the surface of the cover 17 is fixedly provided with a fixing block 18. The fixing block 18 and the bracket 7 are threadedly connected with a bolt 19. Most cranes are in outdoor environments, and the first motor 9 is often corroded by rainwater, and the service life of the first motor 9 is greatly reduced. The use of the cover 17 can effectively protect the first motor 9. The rotatably connected cover 17 is more convenient for maintaining the first motor 9. The surface of the bracket 7 is provided with a heat dissipation hole 16, and the heat dissipation hole 16 is located behind the first motor 9. The first motor 9 generates a large amount of heat when working, and the heat dissipation hole 16 can effectively accelerate the release of the heat generated by the first motor 9.

[0026] Working principle: When in use, first turn the handle 5, the handle 5 drives the screw 4 to start rotating, so that the limit plate 3 can move up and down. When the slide column 2 moves to retract the bottom plate 6, it starts to push the bracket 7, and the universal wheel 20 at the bottom end of the bottom plate 6 starts to work, which makes it more convenient to move the crane and improves the flexibility of the crane. When the crane moves to a suitable position, turn the handle 5 again to squeeze the bottom plate 6. The two ends of the two bases 1 of the crane are equipped with bottom plates 6, a total of eight bottom plates 6, which greatly increases the friction with the ground, making the crane more stable when in use. After the crane is stable, Turn on the first motor 9, and the output power of the first motor 9 drives the lead screw 10 to rotate. Then, after the lifting device is adjusted to a suitable position, turn on the second motor 13 to release the rope. After the rope hook 15 is placed, turn on the second motor 13 again, and the second motor 13 drives the rope winding rod 14 to rotate, so that the rope hook 15 is tightened, thereby completing the lifting work. The cover 17 can effectively protect the first motor 9, and the rotatably connected cover 17 makes it more convenient to maintain the first motor 9. The first motor 9 will generate a lot of heat when working, and the heat dissipation holes 16 can effectively accelerate the release of the heat generated by the first motor 9.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A gantry crane, comprising a base (1), characterized in that: The surface of the base (1) is slidably connected with a slide column (2), the top of the slide column (2) is fixedly installed with a limit plate (3), the surface of the limit plate (3) is threadedly connected with a screw rod (4), the surface of the screw rod (4) is fixedly installed with a handlebar (5), the bottom end of the slide column (2) is fixedly installed with a bottom plate (6), the bottom end of the base (1) is fixedly installed with a universal wheel (20), the surface of the base (1) is fixedly installed with a bracket (7), the surface of the bracket (7) is fixedly installed with a crossbeam (8), the side of the bracket (7) is fixedly installed with a first motor (9), the output end of the first motor (9) is fixedly installed with a screw rod (10), the surface of the screw rod (10) is slidably connected with a sliding block (11), and the bottom end of the sliding block (11) is fixedly installed with a lifting device.

2. The gantry crane according to claim 1, characterized in that: The lifting device comprises a rope winding bin (12), a second motor (13) is fixedly mounted on the surface of the rope winding bin (12), a rope winding rod (14) is fixedly mounted on the output end of the second motor (13), and a rope hook (15) is wrapped around the surface of the rope winding rod (14).

3. The gantry crane according to claim 1, characterized in that: The shape of the turning handle (5) is valve-shaped, and the side surface of the bracket (7) is trapezoidal.

4. The gantry crane according to claim 1, characterized in that: The base (1) is rotationally connected to the screw rod (4), and the length of the screw rod (4) is greater than the length of the sliding column (2).

5. The gantry crane according to claim 1, characterized in that: The number of the screw rods (4) is four groups, and the four groups of screw rods (4) are symmetrically distributed in pairs on the surface of the base (1).

6. The gantry crane according to claim 1, characterized in that: A cover (17) is rotatably connected to the surface of the bracket (7), a fixing block (18) is fixedly installed on the surface of the cover (17), and a bolt (19) is threadedly connected between the fixing block (18) and the bracket (7).

7. The gantry crane according to claim 1, characterized in that: A heat dissipation hole (16) is provided on the surface of the bracket (7), and the heat dissipation hole (16) is located behind the first motor (9).

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