Foldable portable lifting arm for forklift

Abstract

The utility model relates to a kind of foldable fork-lift truck agricultural machine portable crane arms, including mounting arm, the inside rotation of mounting arm is connected with crane arm, the utility model is driven to move by extension and recovery of hydraulic rod to push sleeve, push sleeve again push swivel lever seat, so that movable sliding block slides in guide sliding slot, to change the inclination between crane arm and mounting arm, realize the unfolding and recovery folding of crane arm, both facilitate hoisting operation when using, it is convenient to reduce volume when not using, crane arm can be effectively recovered to the side close to mounting arm when not using, compared with the volume of crane arm in working state, it can significantly reduce volume, when hydraulic rod is recovered to limit position, the inclination of crane arm is greatly reduced, the volume of overall device is also greatly reduced, effectively avoid the problem that traditional straight arm type crane arm is large in size when not using, inconvenient to transport and carry, improve the portability of device.

Description

Technical Field

[0001] This utility model relates to the field of crane equipment technology, and in particular to a foldable portable crane for forklifts and agricultural machinery. Background Technology

[0002] In the field of crane equipment technology, especially in equipment such as forklifts and agricultural machinery, cranes play a crucial role. They are not only key components for realizing cargo handling and lifting operations, but also important guarantees for improving operational efficiency and safety. In many industries such as logistics, warehousing, construction, and agriculture, crane equipment is widely used for handling and loading / unloading various materials. Its performance and design directly affect the smooth progress of operations and work efficiency.

[0003] While traditional straight-boom cranes offer a degree of stability and load-bearing capacity in lifting operations, they also have significant limitations in practical use. For example, when not in use, the fixed structure of a traditional straight-boom crane makes it difficult to fold or adjust its angle effectively. This results in a large, space-consuming boom when not in operation, causing significant inconvenience for transportation and carrying. In agricultural operations, for instance, after using a traditional straight-boom crane to lift goods, farmers need to transport the equipment to other locations. Because the boom is difficult to fold, the overall size of the equipment is large, requiring more space during transportation and potentially increasing transportation costs. Furthermore, the large size makes moving and storing the equipment more difficult in narrow field paths or warehouse passageways. In such cases, the portability and flexibility of the equipment are severely limited, seriously affecting operational efficiency and user experience. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a foldable portable boom for forklifts and agricultural machinery.

[0005] This utility model is achieved using the following technical solution: a foldable portable boom for forklifts and agricultural machinery, including a mounting arm, a boom rotatably connected inside the mounting arm, a movable slider slidably connected inside the boom, a rotating rod seat fixedly connected to the surface of the movable slider, a hydraulic rod fixedly connected to the surface of the mounting arm, a push sleeve fixedly connected to the output end of the hydraulic rod, the outer end of the push sleeve hinged to the surface of the rotating rod seat, an extension block fixedly connected to the lower surface of the boom, and a gravity hook rotatably connected inside the extension block.

[0006] The above technical solution effectively solves the problem that traditional straight booms are difficult to adjust when not in use, resulting in a large overall boom size and inconvenience for personnel to transport and carry. By extending and retracting the hydraulic rods, the boom can be flexibly unfolded and folded, which is convenient for lifting operations when in use and also makes it easier to reduce the size when not in use, making it easier to transport and carry.

[0007] As a further improvement to the above solution, a guide groove is provided on the surface of the boom, and the movable slider is slidably connected to the inside of the guide groove.

[0008] As a further improvement to the above solution, a groove is provided on the surface of the extension block, and a rotating rod is fixedly connected to the inner wall of the groove.

[0009] As a further improvement to the above solution, the top of the gravity hook is provided with a slot that matches the rotating rod, and the gravity hook is rotatably connected to the surface of the rotating rod through the slot.

[0010] The above technical solution ensures that the gravity hook remains vertically downward during the movement of the boom, enhancing the reliability and stability of the lifting operation and improving lifting efficiency.

[0011] As a further improvement to the above solution, a rotating cavity is provided at the top of the mounting arm, and the boom is rotatably connected to the inner wall of the rotating cavity.

[0012] As a further improvement to the above solution, the surface of the mounting arm is provided with mounting screw grooves, and there are two mounting screw grooves, which are respectively opened on the upper and lower sides of the mounting arm.

[0013] The above technical solutions enable the boom device to be securely installed on forklifts or agricultural machinery, enhancing the device's versatility and practicality, and facilitating its use on different equipment.

[0014] As a further improvement to the above solution, a support rod is fixedly connected to the inner wall of the rotating rod seat, and the push sleeve is rotatably connected to the outer surface of the support rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes the extension and retraction of a hydraulic rod to move a push sleeve, which in turn pushes a rotating rod seat, causing a movable slider to slide within a guide groove. This alters the angle between the boom and the mounting arm, enabling the boom to be extended and retracted. This design facilitates lifting operations during use and reduces the overall size when not in use. When not in use, the boom can be effectively retracted to the side closest to the mounting arm, significantly reducing its size compared to its working state. When the hydraulic rod retracts to its limit position, the boom's angle decreases dramatically, further reducing the overall size of the device. This effectively avoids the problem of traditional straight booms being bulky and inconvenient to transport when not in use, thus improving the device's portability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the boom of this utility model;

[0019] Figure 3 This utility model Figure 2 An enlarged structural diagram at point A in the middle;

[0020] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0021] Explanation of key symbols:

[0022] 1. Mounting arm; 2. Boom; 3. Movable slider; 4. Rotary rod seat; 5. Hydraulic rod; 6. Push sleeve; 7. Guide groove; 8. Extension block; 9. Gravity hook; 10. Groove; 11. Rotary rod; 12. Rotating cavity; 13. Mounting screw groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example:

[0025] Please combine Figure 1-4This embodiment discloses a foldable portable forklift crane for agricultural machinery, including a mounting arm 1. A crane arm 2 is rotatably connected inside the mounting arm 1, and a movable slider 3 is slidably connected inside the crane arm 2. A rotating rod seat 4 is fixedly connected to the surface of the movable slider 3. A hydraulic rod 5 is fixedly connected to the surface of the mounting arm 1, and a push sleeve 6 is fixedly connected to the output end of the hydraulic rod 5. The outer end of the push sleeve 6 is hinged to the surface of the rotating rod seat 4. An extension block 8 is fixedly connected to the lower surface of the crane arm 2, and a gravity hook 9 is rotatably connected inside the extension block 8. When the crane arm 2 needs to be used, the operator activates the hydraulic rod 5 to extend it. The extension of the hydraulic rod 5 causes the push sleeve 6 to move. Since the push sleeve 6 is hinged to the rotating rod seat 4, the movement of the push sleeve 6 pushes the rotating rod seat 4. The rotating rod seat 4 slides on the surface of the guide groove 7 via the movable slider 3. As block 3 changes position within guide chute 7, the angle between boom 2 and mounting arm 1 increases. During boom 2's movement, the gravity hook 9 below it remains vertically downward due to its movable design, facilitating lifting operations. When boom 2 is no longer needed and the overall device's volume is reduced for easier transport, hydraulic rod 5 begins to retract. The retraction of hydraulic rod 5 drives movable slider 3 to slide within guide chute 7 via push sleeve 6. The sliding of movable slider 3 causes boom 2 to rotate along mounting arm 1, thereby reducing the angle between mounting arm 1 and boom 2. As hydraulic rod 5 continues to retract, the angle of boom 2 gradually decreases. Finally, when hydraulic rod 5 reaches its limit position, the angle of boom 2 is effectively reduced compared to its working angle, thus achieving effective folding and retraction of boom 2 and reducing overall volume.

[0026] The surface of the boom 2 is provided with a guide groove 7, and the movable slider 3 is slidably connected to the inside of the guide groove 7, so that the push sleeve 6 can push the rotating rod seat 4 through the hinge, thereby driving the movable slider 3 to slide in the guide groove 7, realizing the unfolding and folding action of the boom 2.

[0027] The surface of the extension block 8 is provided with a groove 10, and a rotating rod 11 is fixedly connected to the inner wall of the groove 10.

[0028] The top of the gravity hook 9 is provided with a slot that matches the rotating rod 11. The gravity hook 9 is rotatably connected to the surface of the rotating rod 11 through the slot, so that the gravity hook 9 can rotate flexibly on the rotating rod 11 to adapt to the movement of the boom 2 and always maintain a vertical downward state.

[0029] The top of the mounting arm 1 is provided with a rotating cavity 12, and the boom 2 is rotatably connected to the inner wall of the rotating cavity 12, so that the boom 2 can rotate flexibly within the rotating cavity 12 to realize the unfolding and folding action of the boom 2.

[0030] The surface of the mounting arm 1 is provided with mounting screw grooves 13. There are two mounting screw grooves 13, which are respectively opened on the upper and lower sides of the mounting arm 1. The boom device can be installed on equipment such as forklifts or agricultural machinery through the mounting screw grooves 13.

[0031] A support rod is fixedly connected to the inner wall of the rotating rod seat 4. The push sleeve 6 is rotatably connected to the outer surface of the support rod, so that the push sleeve 6 can rotate flexibly on the support rod, thereby better pushing the rotating rod seat 4, and then driving the movable slider 3 to slide in the guide groove 7, realizing the unfolding and folding action of the boom 2.

[0032] The implementation principle of the foldable portable boom for forklifts and agricultural machinery in this embodiment is as follows: First, personnel can securely install the boom device onto forklifts or agricultural machinery using the mounting screw groove 13, enhancing the device's versatility and practicality. When lifting operations are required using the boom 2, the operator activates the hydraulic rod 5, extending it. The extension of the hydraulic rod 5 drives the push sleeve 6, which is fixedly connected to its output end, to move. Since the push sleeve 6 and the rotating rod seat 4 are hinged, this connection method allows the movement of the push sleeve 6 to effectively transmit power, thereby pushing the rotating rod seat 4. The rotating rod seat 4 then... The movable slider 3 slides within the guide groove 7 on the surface of the boom 2. As the position of the movable slider 3 inside the guide groove 7 changes continuously, the angle between the boom 2 and the mounting arm 1 gradually increases, thereby enabling the boom 2 to extend to a suitable position for lifting operations. During this process, the gravity hook 9, which is rotatably connected inside the extension block 8 fixedly connected to the lower surface of the boom 2, is rotatably connected to the surface of the rotating rod 11 through a slot. This connection method allows the gravity hook 9 to rotate flexibly on the rotating rod 11 to adapt to the movement of the boom 2 and always maintain a vertically downward state.

[0033] When the hoisting operation is completed and the boom 2 needs to be folded for transportation, the operator controls the hydraulic rod 5 to begin retraction. The retraction of the hydraulic rod 5 drives the movable slider 3 to slide inside the guide groove 7 by pushing the sleeve 6. The sliding of the movable slider 3 causes the boom 2 to rotate along the mounting arm 1, thereby gradually reducing the tilt angle between the mounting arm 1 and the boom 2. As the hydraulic rod 5 continues to retract, the tilt angle of the boom 2 continues to decrease. Finally, when the hydraulic rod 5 moves to its limit position, the tilt angle of the boom 2 is effectively reduced compared to the tilt angle during operation, thus achieving effective folding and retraction of the boom 2 and reducing the overall volume.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A foldable portable boom for forklifts and agricultural machinery, characterized in that, The device includes an installation arm (1), a boom (2) is rotatably connected inside the installation arm (1), a movable slider (3) is slidably connected inside the boom (2), a rotating rod seat (4) is fixedly connected to the surface of the movable slider (3), a hydraulic rod (5) is fixedly connected to the surface of the installation arm (1), a push sleeve (6) is fixedly connected to the output end of the hydraulic rod (5), the outer end of the push sleeve (6) is hinged to the surface of the rotating rod seat (4), an extension block (8) is fixedly connected to the lower surface of the boom (2), and a gravity hook (9) is rotatably connected inside the extension block (8).

2. The foldable portable crane arm for forklifts and agricultural machinery as described in claim 1, characterized in that: The surface of the boom (2) is provided with a guide groove (7), and the movable slider (3) is slidably connected to the inside of the guide groove (7).

3. The foldable portable crane arm for forklifts and agricultural machinery as described in claim 1, characterized in that: The surface of the extension block (8) is provided with a groove (10), and a rotating rod (11) is fixedly connected to the inner wall of the groove (10).

4. The foldable portable crane boom for forklifts and agricultural machinery as described in claim 3, characterized in that: The top of the gravity hook (9) is provided with a slot that matches the rotating rod (11), and the gravity hook (9) is rotatably connected to the surface of the rotating rod (11) through the slot.

5. A foldable portable forklift crane as described in claim 1, characterized in that: The top of the mounting arm (1) is provided with a rotating cavity (12), and the boom (2) is rotatably connected to the inner wall of the rotating cavity (12).

6. The foldable portable crane boom for forklifts and agricultural machinery as described in claim 1, characterized in that: The surface of the mounting arm (1) is provided with mounting screw grooves (13), and there are two mounting screw grooves (13), which are respectively opened on the upper and lower sides of the mounting arm (1).

7. A foldable portable forklift crane as described in claim 1, characterized in that: The inner wall of the rotating rod seat (4) is fixedly connected to a support rod, and the push sleeve (6) is rotatably connected to the outer surface of the support rod.

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