Portable gantry crane
By incorporating structural designs such as flip plates, positioning rods, and damping components, the problem of insufficient terrain adaptability and stability of small gantry cranes has been solved, enabling stable placement on uneven ground and improving safety and efficiency during heavy object handling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANTONG LIFUTONG HOISTING MASCH CO LTD
- Filing Date
- 2026-04-08
- Publication Date
- 2026-06-09
AI Technical Summary
Existing small gantry cranes are insufficient in terms of terrain adaptability and stability. They are difficult to place stably on uneven ground, and are prone to shaking and tipping during the handling of heavy objects, which affects the safety of equipment and personnel. In addition, they have low working efficiency in complex environments.
The structure employs a flip plate, positioning rod, lifting rod, and damping components. Stability is improved through the auxiliary fixing of the flip plate, the ground contact of the positioning rod, and the limiting fixing of the damping components. The adjustment groove of the support base and the electric push rod enable flexible adjustment of height and position, enhancing terrain adaptability.
It improves the stability and safety of small gantry cranes on uneven ground, reduces swaying, and enhances working efficiency and safety in complex environments.
Smart Images
Figure CN122166665A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of gantry crane technology, and more specifically, to a lightweight mobile gantry crane. Background Technology
[0002] In many fields such as modern industrial production, logistics and transportation, and construction, it is often necessary to lift and move heavy objects. Gantry cranes, as an important lifting equipment, are widely used due to their simple structure and convenient operation. In particular, small gantry cranes play an important role in some scenarios with limited space or high requirements for equipment mobility, such as material handling in small factories and partial lifting operations on construction sites, due to their lightweight and easy mobility.
[0003] However, existing small gantry cranes have some significant limitations in practical use. On the one hand, their applicable terrain is relatively limited, and they can usually only be used on flat ground. In uneven ground environments, due to the lack of an effective terrain adaptation mechanism, the gantry crane is difficult to place stably, which may lead to installation difficulties or even failure to operate normally. For example, in some construction sites, the ground may have potholes, bumps, or unevenness. When setting up a small gantry crane on such terrain, a lot of time and effort needs to be spent to level the ground, otherwise its stability and safety will be affected.
[0004] On the other hand, stability issues are particularly prominent when using small gantry cranes to move heavy objects. These types of gantry cranes mainly rely on bases for fixation, but in actual operation, base fixation alone is often insufficient to cope with the various forces generated during the handling of heavy objects, such as the impact force during lifting and the inertial force during movement. This can easily lead to instability such as swaying and tipping of the gantry crane during operation, which may not only damage equipment and goods, but also threaten the lives of operators.
[0005] Furthermore, since small gantry cranes are used in various work scenarios and require frequent movement and reconfiguration, the existing fixing methods and structural designs make them inadequate in dealing with complex and ever-changing work environments, reducing work efficiency and increasing usage costs. In summary, existing small gantry cranes are insufficient in terms of terrain adaptability and stability, and there is an urgent need for a lightweight mobile gantry crane that can effectively solve these problems to meet diverse work needs and improve work efficiency and safety. Summary of the Invention
[0006] The purpose of this invention is to provide a lightweight mobile gantry crane to solve the problems mentioned in the background art.
[0007] A lightweight mobile gantry crane includes a pair of support bases, a positioning plate is fixedly installed on the lower side of the support bases, a sliding plate is provided on the upper side of the positioning plate, a rotating groove is provided at the upper end of the sliding plate, and a rotating component is rotatably arranged in the middle of the rotating groove. A limiting frame is fixedly installed on the side of the rotating slot, a flip plate is fixedly installed on the side of the rotating component, a pair of lifting rods are provided on the side of the limiting frame, a square slot is opened in the middle of the flip plate, several mounting slots are equidistantly arranged on the side of the flip plate, a positioning rod is equidistantly arranged in the middle of the mounting slot, a second electric push rod is fixedly installed on the side of the inner cavity of the flip plate, a connecting block is fixedly installed on the output end of the second electric push rod, a stabilizing plate is fixedly installed on the side of the connecting block, several adjusting rods are fixedly installed on the side of the stabilizing plate at equal intervals, and several second electric push rods are fixedly installed on the side of the adjusting rods. Limiting components are fixedly installed on both sides of the positioning rod, a circular cavity is opened in the middle of the mounting groove, a positioning ring is fixedly installed on the outer side of the middle part of the positioning rod, a positioning spring is fixedly installed on the upper end of the positioning ring, and a positioning head is fixedly installed on the lower end of the positioning rod.
[0008] Furthermore, an adjustment groove is fixedly installed in the middle of the support base, an adjustment component is slidably arranged in the middle of the adjustment groove, crossbeams are fixedly installed at the upper ends of the adjustment components on both sides, a first electric push rod is fixedly installed on the side of the adjustment groove, the upper end of the first electric push rod is fixedly connected to the crossbeam, a square groove corresponding to the adjustment component is opened in the middle of the adjustment groove, and the adjustment groove and the adjustment component are fixedly connected by bolts.
[0009] By adopting the above technical solution, the bolts of the adjusting groove and the adjusting component are removed, and the adjusting component can push the crossbeam to move upward. At this time, the crossbeam and the adjusting component move upward as a whole, which makes it easier to control the hoisting height of the crossbeam.
[0010] Furthermore, a fixing component is fixedly installed on the upper side of the positioning plate, and an mounting component is fixedly installed on the upper end of the sliding plate. The positioning plate and the sliding plate are slidably snapped together, and the fixing component and the mounting component are slidably snapped together. The fixing component and the mounting component are fixedly connected by bolts on the upper side.
[0011] By adopting the above technical solution, the sliding plate and the mounting parts can be slidably disassembled and assembled as a whole. During transportation, the sliding plate and the mounting parts can be disassembled and separated from the positioning plate for easy separation.
[0012] Furthermore, a drive motor is fixedly installed at the upper end of the sliding plate, and a drive shaft is fixedly installed at the side output end of the drive motor, with the side of the drive shaft fixedly connected to the rotating component.
[0013] By adopting the above technical solution, the drive motor can drive the rotating parts to rotate through the drive shaft. When the whole device moves, the drive motor can control the rotating parts to flip upwards, making it convenient for the flip plate to be flipped and stored.
[0014] Furthermore, a limiting plate is fixedly installed on the side of the support base, and a hook is rotatably provided on the side of the flip plate. The hook and the limiting plate can be rotatably snapped together.
[0015] By adopting the above technical solution, the hook can rotate on the side of the flip plate. When the flip plate is vertically set close to the support base, the hook can be rotated to lock the hook and the limiting plate together, so that the flip plate can be flipped and stored.
[0016] Furthermore, the upper side of the lifting rod is provided with a threaded groove, the lifting rod is rotatably mounted on the side of the limiting frame, and a support plate is fixedly installed at the lower end of the lifting rod.
[0017] By adopting the above technical solution, the height of the lower end of the support plate can be adjusted by rotating the lifting rod, and the operator can adjust the limit frame to a horizontal position to facilitate the support of the flipping plate.
[0018] Furthermore, the damping component has an arc-shaped groove on its side that corresponds to the mounting groove, and the damping component is a rubber material component.
[0019] By adopting the above technical solution, the horizontal movement of the damping component can be controlled by the stabilizing plate. When the damping component contacts the mounting groove, the damping component will limit and fix the mounting groove.
[0020] Furthermore, auxiliary support components are fixedly installed on both sides of the support base, and a support leg is provided in the middle of the auxiliary support component.
[0021] By adopting the above technical solution, the support base can be limited and positioned by the support legs, which facilitates the pre-positioning of the support base.
[0022] Furthermore, a main control unit is fixedly installed on the side of the support base, a storage battery is fixedly installed on the upper end of the sliding plate, and rotating wheels are fixedly installed on the lower ends of both sides of the support base.
[0023] By adopting the above technical solution, the battery can locate the device, and the internal electrical operation can be controlled through the main control unit.
[0024] Compared with the prior art, the advantages of this invention are: 1. In this invention, by setting a structure with a flip plate, the overall frame can be fixed in an auxiliary manner, thereby increasing the support area of the support base and improving stability.
[0025] 2. In this invention, by setting a positioning rod, the lifting device can contact the ground under the action of gravity through the positioning rod after it is set. In the case of pits and depressions, it can also provide stable support for the whole, so that the device can be set at the ground position of the foundation pit. At the same time, it reduces slight shaking and avoids horizontal movement, making the overall setting of the device more stable. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0027] Figure 2 These are two structural schematic diagrams of the overall structure of the present invention.
[0028] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at point A in the diagram.
[0029] Figure 4 This is a schematic diagram of the flipping structure of the flipping plate of the present invention.
[0030] Figure 5 This is a schematic diagram of the structure of the flip plate of the present invention.
[0031] Figure 6 This is a cross-sectional view of the structure of the flip plate of the present invention.
[0032] Figure 7 This is a schematic diagram of the adjusting rod of the present invention.
[0033] The following are the labeling details in the diagram: 1. Adjustment groove; 2. Support base; 201. Limiting plate; 3. Flipping plate; 4. Lifting rod; 5. Support plate; 6. Limiting frame; 7. Drive motor; 8. Support leg; 9. Adjusting component; 10. First electric push rod; 11. Crossbeam; 12. Main control unit; 13. Battery; 14. Hook; 15. Rotating wheel; 16. Rotating groove; 17. Rotating component; 18. Positioning plate; 19. Sliding plate; 20. Fixing component; 21. Mounting component; 22. Auxiliary support component; 23. Positioning rod; 24. Mounting groove; 2401. Limiting component; 25. Positioning head; 26. Drive shaft; 27. Positioning spring; 28. Stabilizing plate; 29. Adjusting rod; 30. Damping component; 31. Connecting block; 32. Positioning ring; 33. Second electric push rod. Detailed Implementation
[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] like Figure 1 - Figure 7 As shown, the embodiment of the present invention provides: including a pair of support bases 2, a positioning plate 18 is fixedly installed on the lower side of the support base 2, a sliding plate 19 is provided on the upper side of the positioning plate 18, a rotating groove 16 is provided at the upper end of the sliding plate 19, and a rotating component 17 is rotatably provided in the middle of the rotating groove 16. A limiting frame 6 is fixedly installed on the side of the rotating slot 16, a flip plate 3 is fixedly installed on the side of the rotating part 17, a pair of lifting rods 4 are provided on the side of the limiting frame 6, a square slot is opened in the middle of the flip plate 3, several mounting slots 24 are equidistantly arranged on the side of the flip plate 3, a positioning rod 23 is equidistantly arranged in the middle of the mounting slot 24, a second electric push rod 33 is fixedly installed on the side of the inner cavity of the flip plate 3, a connecting block 31 is fixedly installed at the output end of the second electric push rod 33, a stabilizing plate 28 is fixedly installed on the side of the connecting block 31, several adjusting rods 29 are equidistantly installed on the side of the stabilizing plate 28, and several second electric push rods 33 are fixedly installed on the side of the adjusting rods 29. Limiting components 2401 are fixedly installed on both sides of the positioning rod 23. A circular cavity is opened in the middle of the mounting groove 24. A positioning ring 32 is fixedly installed on the outer side of the middle of the positioning rod 23. A positioning spring 27 is fixedly installed on the upper end of the positioning ring 32. A positioning head 25 is fixedly installed on the lower end of the positioning rod 23. An adjustment groove 1 is fixedly installed in the middle of the support base 2. An adjustment component 9 is slidably arranged in the middle of the adjustment groove 1. A crossbeam 11 is fixedly installed at the upper end of the adjustment components 9 on both sides. A first electric push rod 10 is fixedly installed on the side of the adjustment groove 1. The upper end of the first electric push rod 10 is fixedly connected to the crossbeam 11. A square groove corresponding to the adjustment component 9 is opened in the middle of the adjustment groove 1. The adjustment groove 1 and the adjustment component 9 are fixedly connected by bolts. When the bolts of the adjustment groove 1 and the adjustment component 9 are removed, the adjustment component 9 can push the crossbeam 11 to move upward. At this time, the crossbeam 11 and the adjustment component 9 move upward as a whole, which makes it convenient to control the hoisting height of the crossbeam 11. A fixing member 20 is fixedly installed on the upper side of the positioning plate 18, and an mounting member 21 is fixedly installed on the upper end of the sliding plate 19. The positioning plate 18 and the sliding plate 19 are slidably snapped together, and the fixing member 20 and the mounting member 21 are slidably snapped together. The fixing member 20 and the mounting member 21 are fixedly connected by bolts on the upper side. The sliding plate 19 and the mounting member 21 can be slidably disassembled and assembled as a whole. During transportation, the sliding plate 19 and the mounting member 21 can be disassembled and separated from the positioning plate 18 for easy separation. A drive motor 7 is fixedly installed on the upper end of the sliding plate 19. A drive shaft 26 is fixedly installed on the side output end of the drive motor 7. The side of the drive shaft 26 is fixedly connected to the rotating part 17. The drive motor 7 can drive the rotating part 17 to rotate through the drive shaft 26. When the whole device moves, the drive motor 7 can control the rotating part 17 to flip upward, so that the flip plate 3 can be flipped and stored. A limiting plate 201 is fixedly installed on the side of the support base 2, and a hook 14 is rotatably provided on the side of the flip plate 3. The hook 14 and the limiting plate 201 can be rotatably snapped together. The hook 14 can rotate on the side of the flip plate 3. When the flip plate 3 is vertically set close to the support base 2, the hook 14 can be rotated to snap the hook 14 and the limiting plate 201 together, so that the flip plate 3 can be flipped over and stored. The upper side of the lifting rod 4 is provided with a threaded groove. The lifting rod 4 is rotatably set on the side of the limiting frame 6. The lower end of the lifting rod 4 is fixedly installed with a support plate 5. By rotating the lifting rod 4, the height of the lower end of the support plate 5 can be adjusted. The operator can adjust the limiting frame 6 to a horizontal position to facilitate the support of the flip plate 3. The side of the damping component 30 is provided with an arc-shaped groove corresponding to the mounting groove 24. The damping component 30 is a rubber component. The horizontal movement of the damping component 30 can be controlled by the stabilizing plate 28. When the damping component 30 contacts the mounting groove 24, the damping component 30 will limit and fix the mounting groove 24. Auxiliary support components 22 are fixedly installed on both sides of the support base 2. A support bracket 8 is provided in the middle of the auxiliary support component 22. The support bracket 8 can limit and position the support base 2, which facilitates the pre-positioning of the support base 2. The main control unit 12 is fixedly installed on the side of the support base 2, the battery 13 is fixedly installed on the upper end of the sliding plate 19, and the rotating wheels 15 are fixedly installed on the lower ends of both sides of the support base 2. The battery 13 can position the device, and the internal electrical operation can be controlled by the main control unit 12.
[0036] The working principle of this invention is as follows: A pair of support bases 2 form a basic support structure. The rotating wheels 15 installed on the lower ends of both sides of the support bases 2 make the entire device easy to move and can be easily transferred between different work sites. The auxiliary support members 22 fixed on both sides of the support bases 2 and the support legs 8 in the middle can be adjusted downward to the ground contact position by rotating the support legs 8 after the entire device is moved to the required position. This can limit and position the support bases 2, achieve pre-positioning, and ensure the accuracy of the initial placement of the equipment. The positioning plate 18 and the sliding plate 19 on the lower side of the support base 2 are connected by sliding snap-fit. The fixing part 20 on the positioning plate 18 and the mounting part 21 on the sliding plate 19 are also slidably snap-fitted and fixed by the upper bolts. During transportation, the bolts can be removed so that the sliding plate 19 and the mounting part 21 can be separated from the positioning plate 18 as a whole, which is convenient for transportation. The support base 2 has an adjustment groove 1 in the middle, and an adjustment component 9 is slidably installed in the adjustment groove 1. The upper ends of the adjustment components 9 on both sides are fixedly connected to the cross beam 11. The upper end of the first electric push rod 10 on the side of the adjustment groove 1 is fixed to the cross beam 11. When the bolts between the adjustment groove 1 and the adjustment component 9 are removed, the first electric push rod 10 is activated, pushing the adjustment component 9 and the cross beam 11 to move upward, thereby flexibly controlling the hoisting height of the cross beam 11 to adapt to hoisting requirements of different heights. When the entire device is moved to a suitable position, when it is necessary to move or store the device, the drive motor 7 controls the rotating slot 16 to rotate upward, thereby driving the rotating plate 3 connected to it to rotate. At the same time, the hook 14 rotatably set on the side of the rotating plate 3 can be connected to the limiting plate 201 on the side of the support base 2 when the rotating plate 3 is vertically set close to the support base 2, so as to realize the rotation and storage of the rotating plate 3, reduce the space occupied by the equipment, and facilitate movement and storage. Once the entire device is moved to the appropriate position, the height of the lower end of the support plate 5 can be adjusted by rotating a pair of lifting rods 4 on the side of the limiting frame 6, thereby adjusting the limiting frame 6 to a horizontal position and providing stable support for the flipping plate 3, ensuring the stability of the flipping plate 3 during use. Multiple mounting slots 24 are equidistantly slidably arranged on the side of the flipping plate 3, and positioning rods 23 are slidably arranged within the mounting slots 24. The limiting members 2401 on both sides of the positioning rods 23 cooperate with the mounting slots 24 to prevent the positioning rods 23 from dislodging. The positioning ring 32 on the outer side of the middle of the positioning rod 23 is secured by a positioning spring. 27 is connected to the mounting groove 24. The positioning head 25 is installed at the lower end of the positioning rod 23. It is a component made of hard rubber. The drive motor 7 at the upper end of the sliding plate 19 is fixedly connected to the rotating part 17 through the drive shaft 26. When the drive motor 7 starts, it can drive the rotating part 17 to rotate, so that the flipping plate 3 rotates onto the limit frame 6. At this time, when the lifting device is set up, the elastic force of the positioning spring 27 will push the positioning rod 23 downward. At this time, the positioning head 25 on the lower side of the positioning rod 23 will contact the ground under the action of gravity and elastic potential energy, which can keep the whole stable. If the device is installed in an uneven area, the positioning rod 23 will descend to different heights, but it will eventually contact the ground, improving overall support and effectively preventing slight swaying and horizontal movement. The second electric push rod 33 on the side of the inner cavity of the flip plate 3 pushes the connecting block 31, which in turn drives the stabilizing plate 28. The stabilizing plate 28 controls the horizontal movement of the damping element 30 via the adjusting rod 29. The damping element 30 is made of rubber and has an arc-shaped groove on its side that corresponds to the mounting groove 24. When the damping element 30 contacts the mounting groove 24, it can limit and fix the mounting groove 24, ensuring the stability of the positioning rod 23 and related components.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A lightweight mobile gantry crane, comprising a pair of support bases (2), characterized in that: A positioning plate (18) is fixedly installed on the lower side of the support base (2), and a sliding plate (19) is provided on the upper side of the positioning plate (18). A rotating groove (16) is provided at the upper end of the sliding plate (19), and a rotating component (17) is rotatably provided in the middle of the rotating groove (16). A limiting frame (6) is fixedly installed on the side of the rotating slot (16), a flip plate (3) is fixedly installed on the side of the rotating part (17), a pair of lifting rods (4) are provided on the side of the limiting frame (6), a square slot is opened in the middle of the flip plate (3), a number of mounting slots (24) are equidistantly arranged on the side of the flip plate (3), a positioning rod (23) is equidistantly arranged in the middle of the mounting slot (24), a second electric push rod (33) is fixedly installed on the side of the inner cavity of the flip plate (3), a connecting block (31) is fixedly installed at the output end of the second electric push rod (33), a stabilizing plate (28) is fixedly installed on the side of the connecting block (31), a number of adjusting rods (29) are fixedly installed on the side of the stabilizing plate (28), and a number of second electric push rods (33) are fixedly installed on the side of the adjusting rods (29). Limiting components (2401) are fixedly installed on both sides of the positioning rod (23). A circular cavity is opened in the middle of the mounting groove (24). A positioning ring (32) is fixedly installed on the outer side of the middle part of the positioning rod (23). A positioning spring (27) is fixedly installed on the upper end of the positioning ring (32). A positioning head (25) is fixedly installed on the lower end of the positioning rod (23).
2. The portable mobile gantry crane according to claim 1, characterized in that: An adjustment groove (1) is fixedly installed in the middle of the support base (2). An adjustment component (9) is slidably arranged in the middle of the adjustment groove (1). A crossbeam (11) is fixedly installed at the upper end of the adjustment component (9) on both sides. A first electric push rod (10) is fixedly installed on the side of the adjustment groove (1). The upper end of the first electric push rod (10) is fixedly connected to the crossbeam (11). A square groove corresponding to the adjustment component (9) is opened in the middle of the adjustment groove (1). The adjustment groove (1) and the adjustment component (9) are fixedly connected by bolts.
3. A portable mobile gantry crane according to claim 1, characterized in that: A fixing member (20) is fixedly installed on the upper side of the positioning plate (18), and an mounting member (21) is fixedly installed on the upper end of the sliding plate (19). The positioning plate (18) and the sliding plate (19) are slidably connected, and the fixing member (20) and the mounting member (21) are slidably connected. The fixing member (20) and the mounting member (21) are fixedly connected by bolts on the upper side.
4. A portable mobile gantry crane according to claim 1, characterized in that: A drive motor (7) is fixedly installed on the upper end of the sliding plate (19), and a drive shaft (26) is fixedly installed on the side output end of the drive motor (7). The side of the drive shaft (26) is fixedly connected to the rotating part (17).
5. A lightweight mobile gantry crane according to claim 1, characterized in that: A limiting plate (201) is fixedly installed on the side of the support base (2), and a hook (14) is rotatably provided on the side of the flip plate (3). The hook (14) and the limiting plate (201) can be rotatably snapped together.
6. A lightweight mobile gantry crane according to claim 1, characterized in that: The upper side of the lifting rod (4) is provided with a threaded groove. The lifting rod (4) is rotatably set on the side of the limiting frame (6). The lower end of the lifting rod (4) is fixedly installed with a support plate (5).
7. A lightweight mobile gantry crane according to claim 1, characterized in that: The damping component (30) has an arc-shaped groove on its side that corresponds to the mounting groove (24), and the damping component (30) is a rubber component.
8. A lightweight mobile gantry crane according to claim 1, characterized in that: Auxiliary support components (22) are fixedly installed on both sides of the support base (2), and a support leg (8) is provided in the middle of the auxiliary support component (22).
9. A lightweight mobile gantry crane according to claim 1, characterized in that: The main control unit (12) is fixedly installed on the side of the support base (2), the upper end of the sliding plate (19) is fixedly installed with a storage battery (13), and the lower ends of both sides of the support base (2) are fixedly installed with rotating wheels (15).