Movable gantry crane

Abstract

The utility model discloses a movable gantry crane which comprises a hoisting frame body, an I-shaped table is arranged at the top of the hoisting frame body, a convex plate is arranged at the bottom of the hoisting frame body, a servo motor is arranged on one side of the convex plate, an output shaft of the servo motor is in transmission connection with a gear, and supporting frames are arranged on the two sides of the hoisting frame body. Parallel rods are arranged in the two supporting frames, lifting blocks are arranged at one ends of the two parallel rods in a sleeving mode, the gears, the lifting blocks, straight racks, lifting hooks, the parallel rods and limiting plates are arranged, the two lifting hooks increase work stations for lifting objects, after a servo motor is started, the gears can be driven to rotate clockwise, and the lifting blocks are driven to rotate clockwise. Therefore, objects can be fed and discharged regularly, the number of lifted objects is large within a certain time, the efficiency of the crane is improved, after the gear is meshed with the straight rack, force is transmitted to the lifting block, and the lifting block can move up and down at one end of the corresponding parallel rod.

Description

Technical Field

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

[0002] A gantry crane is a type of bridge crane with a horizontal bridge frame set on two legs to form a gantry shape; this crane runs on a ground track and is mainly used for handling and installation operations in open storage yards, shipyards, power stations, ports, railway freight stations, etc. The gantry crane can mainly hoist and lift objects.

[0003] In the patent with the publication number CN213387511U, a portable mobile gantry crane is disclosed, including support seats. There are two support seats, and a connecting plate is commonly installed between the two support seats. Movable wheels are fixedly installed at the lower ends of the two support seats. A movable device is fixedly installed in the middle of the upper end of the connecting plate. A support frame is fixedly installed at the upper end of the support seat. A fixing plate is fixedly installed at the upper end of the support frame. A telescopic adjuster is fixedly installed at the upper end of the fixing plate.

[0004] In the above technology, the main wheel and the belt drive the auxiliary wheel and the movable wheel to move. When lifting, it is convenient to adjust the distance between the object and the ground. Usually, the number of objects to be lifted is relatively large, but only the height of a single lifting device can be adjusted to lift the objects one by one, reducing the efficiency of the crane. Therefore, innovations are made on this technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a mobile gantry crane to solve the problem that the number of objects to be lifted is usually large, but only the height of a single lifting device can be adjusted to lift the objects one by one as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A mobile gantry crane, including a lifting frame body. An I-shaped platform is arranged at the top of the lifting frame body. A convex plate is arranged at the bottom of the lifting frame body. A servo motor is arranged on one side of the convex plate. The output shaft of the servo motor is in transmission connection with a gear. Support frames are arranged on both sides of the lifting frame body. Parallel bars are arranged inside the two support frames. Lifting blocks are sleeved at one ends of the two parallel bars. Straight racks are arranged on one side of the two lifting blocks. Hooks are arranged on one side of the two straight racks. A receiving plate is arranged inside the lifting frame body.

[0007] As a preferred technical solution of the utility model, L-shaped plates are fixedly installed on one side of the two straight racks. The two lifting blocks are respectively movably sleeved at one ends of the two parallel bars. The two straight racks are respectively located on both sides of the gear.

[0008] As a preferred technical solution of the present utility model, one side of each of the two L-shaped plates is fixedly connected to one side of each of the two lifting blocks, and the gears are respectively meshed with the two straight racks.

[0009] As a preferred technical solution of the present utility model, a limiting plate is provided on one side of each of the two hooks, and one side of each of the two limiting plates is fixedly connected to one side of each of the two straight racks.

[0010] As a preferred technical solution of the present utility model, the positions of the two hooks are corresponding.

[0011] As a preferred technical solution of the present utility model, two arc-shaped blocks are provided on both sides of the receiving plate, and four storage rods are provided at the bottom of the lifting frame body.

[0012] As a preferred technical solution of the present utility model, one end of each of the four storage rods is fixedly connected to the top end of each of the four arc-shaped blocks, and a plurality of rollers are provided at the bottom of the lifting frame body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. For a mobile gantry crane of the present utility model, by providing gears, lifting blocks, straight racks, hooks, parallel rods and limiting plates, the two hooks increase the working positions for lifting objects. After starting the servo motor, it can drive the gears to rotate clockwise, thereby driving the two straight racks engaged therewith to move up and down. Therefore, the objects can be regularly loaded and unloaded. In a certain period of time, the number of objects lifted is relatively large, improving the efficiency of the crane. After the gears are meshed with the straight racks, the force is transmitted to the lifting blocks, and the lifting blocks can move up and down at one end of the corresponding parallel rods.

[0015] 2. For a mobile gantry crane of the present utility model, by providing storage rods, arc-shaped blocks, receiving plates and rollers, the hooks and the straight racks are connected through limiting plates. Therefore, as the straight racks move, the hooks also move synchronously, so that the lifting height of the objects can be adjusted. Through the rollers, it is convenient to move the position of the lifting frame body. The material of the receiving plate is aluminum alloy, which has good wear resistance and compressive performance. Therefore, the service life of the receiving plate is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view structural diagram of the present utility model;

[0017] Figure 2 is a partial side view structural diagram of the present utility model;

[0018] Figure 3This is a partial front view structural diagram of the utility model;

[0019] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. Lifting frame; 2. Workbench; 3. Raised plate; 4. Servo motor; 5. Gear; 6. Support frame; 7. Parallel rod; 8. Lifting block; 9. L-shaped plate; 10. Straight rack; 11. Limiting plate; 12. Hook; 13. Storage rod; 14. Arc block; 15. Receiving plate; 16. Roller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1-4 , the utility model provides a technical solution of a mobile gantry crane: Embodiment 1:

[0023] like Figures 1-3 As shown, a mobile gantry crane comprises a lifting frame 1, a workbench 2 is provided on the top of the lifting frame 1, a convex plate 3 is provided at the bottom of the lifting frame 1, a servo motor 4 is provided on one side of the convex plate 3, and the output shaft of the servo motor 4 is connected to a gear 5. Support frames 6 are provided on both sides of the lifting frame 1, and parallel rods 7 are provided inside the two support frames 6. One end of the two parallel rods 7 is provided with a lifting block 8, and one side of the two lifting blocks 8 is provided with a straight rack 10, and one side of the two straight racks 10 is provided with a hook 12. A accommodating plate 15 is provided inside the lifting frame 1, so that objects can be loaded and unloaded regularly. Within a certain period of time, a large number of objects are lifted, which improves the efficiency of the crane. After the gear 5 engages with the straight rack 10, the force is transmitted to the lifting block 8, and the lifting block 8 can move up and down at one end of the corresponding parallel rod 7. Embodiment 2:

[0024] Based on the first embodiment, Figure 1 and Figure 4As shown in the figure, a limiting plate 11 is provided on one side of each of the two lifting hooks 12. One side of each of the two limiting plates 11 is fixedly connected to one side of each of the two straight racks 10. Two arc-shaped blocks 14 are provided on both sides of the receiving plate 15. Four storage rods 13 are provided at the bottom of the lifting frame body 1. In a mobile gantry crane of the present invention, by providing the storage rods 13, arc-shaped blocks 14, receiving plate 15 and rollers 16, the lifting hook 12 is connected to the straight rack 10 through the limiting plate 11. Therefore, as the straight rack 10 moves, the lifting hook 12 also moves synchronously, so that the lifting height of the object can be adjusted.

[0025] Working principle: A gantry crane is a type of bridge crane with a horizontal bridge frame set on two legs to form a gantry shape; this crane runs on the ground track and is mainly used for handling and installation operations in open storage yards, shipyards, power stations, ports and railway freight stations. A gantry crane can mainly hoist and lift objects. The two lifting hooks 12 increase the working positions for lifting objects. After starting the servo motor 4, it can drive the gear 5 to rotate clockwise, thereby driving the two straight racks 10 engaged with it to move up and down. Therefore, the objects can be loaded and unloaded regularly, and within a certain period of time, the number of objects lifted is relatively large, improving the efficiency of the crane. After the gear 5 meshes with the straight rack 10, the force is transmitted to the lifting block 8, and the lifting block 8 can move up and down at one end of the corresponding parallel rod 7. The straight rack 10 is connected to the lifting block 8 through the L-shaped plate 9. As the lifting block 8 moves, the movement of the straight rack 10 is more stable. The lifting hook 12 is connected to the straight rack 10 through the limiting plate 11. Therefore, as the straight rack 10 moves, the lifting hook 12 also moves synchronously, so that the lifting height of the object can be adjusted. Through a number of rollers 16, it is convenient to move the position of the lifting frame body 1. The material of the receiving plate 15 is aluminum alloy, which has good wear resistance and compressive performance. Therefore, the service life of the receiving plate 15 is extended. The receiving plate 15 is connected to the lifting frame body 1 through the storage rods 13 and arc-shaped blocks 14, ensuring the firmness of the receiving plate 15.

[0026] In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] In the present utility model, unless otherwise clearly specified and defined, for example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mobile gantry crane, comprising a lifting frame body (1), characterized in that: At the top of the lifting frame body (1), there is an I-shaped platform (2). At the bottom of the lifting frame body (1), there is a convex plate (3). On one side of the convex plate (3), there is a servo motor (4). The output shaft of the servo motor (4) is drivingly connected to a gear (5). On both sides of the lifting frame body (1), there are support frames (6). Inside both of the support frames (6), there are parallel rods (7). At one end of both of the parallel rods (7), there are lifting blocks (8) sleeved. On one side of both of the lifting blocks (8), there are straight racks (10). On one side of both of the straight racks (10), there are hooks (12). Inside the lifting frame body (1), there is a receiving plate (15).

2. The mobile gantry crane according to claim 1, wherein: On one side of both of the straight racks (10), there are L-shaped plates (9) fixedly installed. Both of the lifting blocks (8) are movably sleeved at one end of both of the parallel rods (7). Both of the straight racks (10) are respectively located on both sides of the gear (5).

3. The mobile gantry crane according to claim 2, characterized in that: On one side of both of the L-shaped plates (9), they are respectively fixedly connected to one side of both of the lifting blocks (8). The gear (5) is respectively meshed with both of the straight racks (10).

4. A mobile gantry crane according to claim 1, characterized in that: On one side of both of the hooks (12), there are limit plates (11). On one side of both of the limit plates (11), they are respectively fixedly connected to one side of both of the straight racks (10).

5. A mobile gantry crane according to claim 4, characterized in that: The positions of both of the hooks (12) are corresponding to each other.

6. A mobile gantry crane according to claim 1, characterized in that: On both sides of the receiving plate (15), there are two arc-shaped blocks (14). At the bottom of the lifting frame body (1), there are four storage rods (13).

7. A mobile gantry crane according to claim 6, characterized in that: One end of each of the four storage rods (13) is respectively fixedly connected to the top of each of the four arc-shaped blocks (14). At the bottom of the lifting frame body (1), there are several rollers (16).

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