A lifting device for forklift fork blade cooperation

Abstract

This utility model discloses a lifting device for use with forklift forks, belonging to the field of lifting. It includes a frame base and a hook. The frame base has a right-angled trapezoidal structure and includes an upper support plate, a lower support plate, a first side plate, and a second side plate. The upper and lower support plates are oppositely arranged and connected by the first and second side plates to form a chamber for the forklift forks to pass through. The hook is located at the lower part of the lower support plate. By making the frame base a right-angled trapezoid, and by having the upper and lower support plates oppositely arranged and connected by the first and second side plates to form a chamber for the forklift forks to pass through, it is possible to quickly convert the device to a lifting operation without disassembling the forks, reducing the use of personnel and loading / unloading equipment, improving on-site work efficiency, and reducing safety risks.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting, specifically a hoisting device for use with forklift forks. Background Technology

[0002] To adapt to different operational needs, forklifts often require switching between different attachments, such as using a boom for lifting or directly attaching slings to the forks. When using a boom, it's often necessary to first disassemble the existing forks and then install the boom attachment with the help of machinery or multiple workers. This process is time-consuming and requires more manpower and auxiliary equipment, making it unsuitable for rapid transitions in high-intensity or labor-scarce environments. While directly attaching slings to the forks eliminates the need for disassembly and reassembly, the forks are typically smooth and flat. If the goods slide back and forth during lifting, it can easily lead to detachment or falling objects. Furthermore, the sharp edges of the forks cause repeated wear on the slings, significantly shortening their lifespan, posing a significant potential risk.

[0003] Especially in ports, warehouses, and other environments with limited space or frequent loading and unloading, traditional methods are either too cumbersome and time-consuming to switch over, or fail to adequately guarantee safety, making it difficult to meet the demands for rapid, efficient, and safe operations. With the continuous growth in loading and unloading scale and the accelerating pace of operations, solutions that can complete equipment switchover quickly while balancing safety and efficiency during operations are becoming increasingly essential.

[0004] Therefore, how to quickly add lifting functions to the existing forklift blades while avoiding cumbersome disassembly and assembly and significant safety hazards has become an urgent problem to be solved in the industry. Utility Model Content

[0005] To address the problem of existing forklift lifting devices that achieve lifting functionality without disassembling the forks, while also ensuring safety and work efficiency, this utility model provides a lifting device for use with forklift forks.

[0006] This utility model is achieved through the following technical solution: a lifting device for use with forklift forks, comprising a frame base and a hook. The frame base is generally in the form of a right-angled trapezoid, and includes an upper support plate, a lower support plate, a first side plate, and a second side plate. The upper and lower support plates are arranged opposite to each other and connected by the first and second side plates to form a chamber for the forklift forks to pass through. The hook is located at the lower part of the lower support plate. By making the frame base into a right-angled trapezoid, and by arranging the upper and lower support plates opposite to each other and connecting them by the first and second side plates to form a chamber for the forklift forks to pass through, it is possible to quickly convert the device into a lifting operation without disassembling the forks, reducing the use of personnel and loading / unloading equipment, improving on-site operation efficiency, and reducing safety risks.

[0007] A further improvement of this invention is that the distance between the upper support plate and the lower support plate near the tail end of the forklift arm is smaller than the distance between the upper support plate and the lower support plate far from the tail end of the forklift arm. By setting different plate spacings at the front and rear ends, the shape of the forklift forks (narrower at the front and wider at the back or wider at the front and narrower at the back) can be better matched, ensuring smooth assembly while improving the fit with the forklift and thus avoiding loosening during lifting or movement.

[0008] A further improvement of this invention is that the upper support plate is horizontally positioned relative to the forklift blades, while the lower support plate is inclined relative to the horizontal plane of the upper support plate. This inclined design better accommodates the differences in thickness and front-to-back height of the forklift blades, ensuring that both the upper and lower support plates fit snugly against the blades, improving the balance of force distribution, and further enhancing the stability of the device during use.

[0009] A further improvement of this invention is that the height of the second side plate is greater than the height of the first side plate. By staggering the heights of the side plates, lateral support for the forklift blades or the load can be strengthened in local areas, and more operating space can be provided for the operator when clamping or adjusting, thereby effectively avoiding jamming and improving operational safety.

[0010] A further improvement of this invention is that the hook is fixed to the bottom of the lower support plate by welding or bolting. By securing the hook to the lower support plate, which is most directly able to bear the vertical load, not only is the force path during hoisting more direct, but the risk of loosening caused by additional connecting parts is also reduced, thereby maintaining stability and safety during multiple hoisting cycles.

[0011] A further improvement of this invention is that the hook is a semi-open shackle structure. By cutting off a portion to create an opening, operators can quickly attach or detach slings or wire ropes from the hook, improving operational efficiency and preventing repeated friction between the slings and sharp parts, thus reducing the risk of wear and breakage.

[0012] A further improvement of this utility model is the inclusion of a fastening bolt, which is located at the bottom of the lower support plate. By adding a fastening bolt at the bottom, the device can be locked in place after it is engaged with the forklift blade, further strengthening the connection between the device and the blade, preventing displacement or swaying during lifting or turning of goods, and improving the overall safety factor.

[0013] A further improvement of this invention is that the inner diameter of the chamber is 16cm. This width is designed to accommodate the dimensions of a common 6-ton forklift blade, providing adequate allowance for blade insertion and withdrawal while maintaining sufficient lateral stability, ensuring smoother operation and reducing operational errors.

[0014] A further improvement of this utility model is that the thickness of the upper support plate, lower support plate, first side plate, and second side plate is 15mm. By increasing the plate thickness, the overall strength and rigidity are enhanced, enabling the device to maintain its characteristics of minimal deformation and resistance to cracking even under repeated hoisting and frequent relocation operations, providing a solid and reliable foundation for long-term field application.

[0015] A further improvement of this utility model is that the frame base is made of Q235 steel plate. This material has good strength and toughness, excellent welding performance, and relatively low cost. It can ensure stable load-bearing capacity during multiple hoisting and relocation operations, and brings convenience and economic benefits to the user during subsequent maintenance or repair, thereby further enhancing the practical value of this utility model in various operating scenarios.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are: the design of this lifting device for forklift blades, by making the frame base into a right-angled trapezoidal structure and having a cavity that can accommodate the forklift blades, allows the device to be quickly and easily attached to the forklift blades without disassembling the original blades, significantly improving the working flexibility of the forklift, allowing the operator to switch the forklift from conventional lifting and handling work to lifting operations in a very short time, greatly saving operation switching time and labor costs.

[0017] Because the hook is directly installed on the lower support plate, it reduces slippage or swaying caused by uneven force distribution or improper lifting point setting, thus ensuring the safety of goods and workers.

[0018] Furthermore, the connection between the first and second side plates ensures the overall structural robustness and durability of the device. Unlike traditional booms, the integrated frame design simplifies additional support structures, thereby reducing the weight and cost of the device. Simultaneously, the right-angled trapezoidal frame base better conforms to the shape of the forklift forks, providing better support and less sway space, making operation smoother and more controllable. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model.

[0021] Figure 2This is a schematic diagram of the overall structure of a specific embodiment of the present utility model.

[0022] Figure 3 This is a front view structural diagram of a specific embodiment of the present utility model.

[0023] In the attached diagram: 1. Upper support plate; 2. Lower support plate; 3. First side plate; 4. Second side plate; 5. Hook; 6. Fastening bolt. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] refer to Figure 1 and 2As shown, this utility model provides a lifting device for forklift blades, including a frame base and a hook 5. The frame base has a right-angled trapezoidal structure and includes an upper support plate 1, a lower support plate 2, a first side plate 3, and a second side plate 4. The upper support plate 1 and the lower support plate 2 are arranged opposite each other and connected by the first side plate 3 and the second side plate 4 to form a cavity for the forklift blades to pass through. The hook 5 is located at the lower part of the lower support plate 2. This device is designed to fully consider the uneven thickness of the forklift arm at the front and rear ends. By making the frame base a right-angled trapezoid, the upper support plate 1 and the lower support plate 2 can be either narrower at the front and wider at the back, or wider at the front and narrower at the back, thus better conforming to the shape of the forklift blades. In use, simply place the device with the vehicle at the work site. The operator first aligns the forklift blades with the cavity at the front of the device and slowly moves it forward, allowing the forklift blades to pass through the middle of the cavity and engage with the upper support plate 1 and the lower support plate 2 respectively. Since the first side plate 3 and the second side plate 4 are fixed to the upper support plate 1 and the lower support plate 2 respectively, the forklift blades can be effectively limited and stabilized in the lateral direction. Then, the hook 5 is suspended from the lower support plate 2 of the device to complete the preparation work. This design allows the forklift to quickly acquire lifting capabilities without disassembling the original blades, unlike the traditional method which requires multiple personnel to work together to remove the blades, replace the boom, or directly attach the lifting strap to the smooth blades. This device not only saves a lot of replacement time but also significantly reduces labor costs. For scenarios with confined working environments and high efficiency requirements, this device can complete the conversion from ordinary blade operation to lifting operation in less than a minute, facilitating multiple batches of rapid loading and unloading or temporary lifting tasks. At the same time, it avoids the safety hazard of the lifting strap slipping off the blades in traditional methods.

[0026] Because the upper support plate 1 and lower support plate 2 firmly cover the fork blades, they are restricted in both the vertical and horizontal directions, reducing unnecessary friction and swaying between the fork blades and the lifting straps, thus ensuring greater operational safety. The hook 5, located at the bottom of the lower support plate 2, ensures the lifting point is positioned slightly below the center of gravity of the forklift. When lifting goods, the center of gravity of the goods is more easily aligned with the forklift, reducing the possibility of swaying and shaking. To return to normal fork blade operation mode, the operator simply needs to loosen the fixing parts to the forklift blades, reverse the forklift, and pull the forklift blades out of the device's chamber to restore the original position. This process requires no additional tools or multiple personnel, improving operational flexibility and reducing the risk of accidents.

[0027] This device has been proven through numerous tests in scenarios such as ports, logistics, warehousing, and general factories to be easy and stable to install and use, with relatively low cost. It can be carried on vehicles and put into use immediately when needed, significantly shortening the operation process, accelerating production efficiency, and reducing unnecessary investment in manpower and auxiliary equipment. It enables forklifts to efficiently complete lifting operations in limited spaces and effectively reduces the risk of contact between goods and the ground and personnel. It has good economic and safety benefits, fully meets the needs of flexible forklift lifting in various occasions, and will not have any adverse effects on the original safety performance of forklifts.

[0028] The distance between the upper support plate 1 and the lower support plate 2 near the tail end of the forklift arm is smaller than the distance between the upper support plate 1 and the lower support plate 2 away from the tail end of the forklift arm, in order to adapt to the structural characteristics of the forklift forks, which are narrower at the front and wider at the back. By adopting a gradually changing front-to-back spacing pattern in the design, this device fits the forklift arm better, effectively improving the fit during use and avoiding excessive swaying during lifting. This differentiated spacing not only improves the stability of the fixation but also facilitates quick insertion or removal by operators, saving manual operation time and significantly reducing safety hazards and risks caused by structural mismatch, thereby achieving safer and more efficient lifting operations.

[0029] The upper support plate 1 is horizontally positioned relative to the forklift blades, allowing the device to fit snugly against the upper surface of the blades during installation, thus achieving a more stable support effect. The lower support plate 2 is inclined relative to the horizontal plane of the upper support plate 1. This design can accommodate differences in thickness or front-to-back height of the forklift blades, allowing the upper support plate 1 and lower support plate 2 to simultaneously contact or adhere to the blades at different locations, improving the overall fit and force uniformity. The second side plate 4 is higher than the first side plate 3, representing an improvement in the lateral structure. The staggered side plates enhance the stability of the device when subjected to loads in the front-to-back or lateral directions, and also facilitate quick installation and removal of the device in confined spaces, significantly enhancing the safety and efficiency of the device during operation.

[0030] The hook 5 is fixed to the bottom of the lower support plate 2 by welding or bolting. This fixing method can maintain the overall stability of the hook while bearing a large load, preventing loosening or deformation during use. The lower support plate 2 usually bears the main vertical tensile force and part of the horizontal tensile force from the lifting of goods. Placing the hook 5 here ensures that the transmission of lifting force is more direct, avoiding unnecessary stress links in the structure. On the other hand, it also allows the hook to be positioned closer to the center of the forklift, improving overall balance and safety. The hook 5 is a semi-open shackle structure. By cutting a part of the shackle to create an opening for quick attachment or removal, the operator can easily put on or take off the sling or hook during lifting operations without making too many additional adjustments, thus simplifying the operation process and improving efficiency. This semi-open shackle structure is particularly practical in confined spaces or in situations where lifting equipment needs to be changed frequently in a short period of time, because it does not rely on sufficient space for attachment like a completely closed ring. The operator only needs to attach the sling at the opening to quickly begin the lifting task. Meanwhile, this structure also reduces the risk of excessive friction between the lifting sling and metal edges, extending the service life of lifting slings and other accessories. In various scenarios, such as port loading and unloading, warehousing and logistics, or intra-site transfers, it can play a dual role of rapid attachment and unloading while providing safety protection, avoiding potential safety hazards caused by the inconvenience of traditional attachment methods. Overall, the semi-open hook 5 is securely fixed to the bottom of the lower support plate 2 through welding or bolting, allowing this component to withstand high lifting loads while also providing convenient operation and reliable protection, meeting the needs of efficient lifting in different environments.

[0031] The device also includes fastening bolts 6, which are located at the bottom of the lower support plate 2. These bolts further lock the relative position between the device and the forklift blade after they are engaged with the forklift blade. After inserting the forklift blade into the chamber and positioning the device, the operator can tighten or loosen the fastening bolts 6 to create sufficient clamping force between the lower support plate 2 and the lower surface of the forklift blade, effectively preventing the risk of loosening or slippage during lifting or movement. Because the fastening bolts 6 are located at the bottom, operators can operate from a lower height, facilitating adjustments in confined spaces or low environments and reducing unsafe factors such as climbing, thus improving overall operational safety. Through one or more fastening bolts 6, the device can adapt to different thicknesses and slight dimensional differences in the forklift blade, allowing for flexible adjustment of the fit between the upper support plate 2 and the forklift blade, ensuring a stable connection between the frame and the blade. The fastening bolt 6 also helps to reduce the burden on operators, avoiding the frequent use of large tools and multiple people when changing booms or disassembling attachments, thereby improving loading and unloading efficiency and saving labor costs while ensuring safety.

[0032] The inner diameter of the chamber is 16cm. This value was designed taking into account the common specifications of six-ton ​​forklift blades and leaving a certain margin to accommodate different models of forklift blades. This ensures that the blades are neither too tight to be difficult to insert during installation, nor too loose to cause loosening or wobbling after installation. The upper support plate 1, lower support plate 2, first side plate 3, and second side plate 4 are all 15mm thick. This thickness has demonstrated good structural stability and impact resistance in multiple experiments, enabling them to withstand large loads during lifting operations without easily deforming or cracking. Since these four plates together form the main frame of the device, their consistent thickness effectively improves the uniformity of overall stress, reduces errors during welding and assembly, and makes the frame more compact and stable during lifting. To balance weldability, strength, and toughness, the frame base uses Q235 steel plate as the main material. This material has good ductility and tensile strength under high-strength conditions, maintaining a stable load-bearing level even during frequent relocation or repeated lifting, without serious fatigue or breakage. By combining Q235 steel plates with a thickness of 15mm, this device ensures rigidity and reliability while still meeting the needs of on-site assembly and subsequent maintenance. This benefits both manufacturing and production, effectively reducing safety hazards in high-intensity work environments. The 16cm inner diameter of the chamber allows forklift forks to be quickly aligned and inserted, enabling operators to complete installation or disassembly in a short time without the need for additional auxiliary booms or multiple personnel. This significantly improves operational efficiency and reduces safety risks in daily production and logistics scenarios. Due to the combination of a wider width and thicker plates, the device can withstand high-load lifting, preventing structural loosening during bulk cargo handling or long-distance transport. Field use demonstrates its reliable operational performance and long service life in everyday scenarios.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting device for forklift fork blade fitting, characterized by, The frame base is in the shape of a right-angled trapezoid as a whole, and comprises an upper support plate (1), a lower support plate (2), a first side plate (3) and a second side plate (4). The upper support plate (1) and the lower support plate (2) are oppositely arranged and connected by the first side plate (3) and the second side plate (4) and can form a cavity for accommodating a forklift fork. The hook (5) is arranged at the lower part of the lower support plate (2). The distance between the upper support plate (1) and the lower support plate (2) close to the tail end of the forklift arm is smaller than the distance between the upper support plate (1) and the lower support plate (2) away from the tail end of the forklift arm.

2. The lift device for use in fitting a fork to a fork truck according to claim 1, wherein The upper support plate (1) is horizontally arranged relative to the forklift fork, and the lower support plate (2) is arranged in an inclined manner relative to the horizontal plane of the upper support plate (1).

3. The lift device for use in fitting a fork to a fork truck according to claim 2, wherein The height of the second side plate (4) is greater than the height of the first side plate (3).

4. The lift device for use in forklift fork blade fitting according to claim 1, characterized by, The hook (5) is fixed to the bottom of the lower support plate (2) by welding or bolt connection.

5. The lift device for use with a fork of a fork truck as set forth in claim 4, wherein, The hook (5) is in the structure of a half-opened clasp ring.

6. The lift device for use with a fork of a fork truck as set forth in claim 1, wherein, A fastening bolt (6) is arranged at the bottom of the lower support plate (2).

7. The lift device for use with a fork of a fork truck as set forth in claim 1, wherein, The inner diameter of the cavity is 16 cm.

8. The lift device for use with a fork of a fork truck as set forth in claim 1, wherein, The thickness of the upper support plate (1), the lower support plate (2), the first side plate (3) and the second side plate (4) is 15 mm.

9. The lift device for use with a fork of a fork truck as set forth in claim 1, wherein, The material of the frame base is Q235 steel plate.

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