Locally detachable reach adjustment fork

Abstract

The utility model provides a kind of locally detachable distance-adjusting pallet fork, it is related to fork field, including fork body, lower hook and upper hook, further including the first placement plate and second placement plate welded with fork body;The present application can be flexibly replaced locally according to the wear condition of upper and lower hooks, so that the un-worn hook components can continue to serve, thereby ensuring the fork transport stability and service life of distance-adjusting pallet fork, improving overall operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of forks, and more specifically, to an adjustable fork that can be partially disassembled. Background Technology

[0002] Current adjustable forks include a lower hook and an upper hook that work with the fork carriage. The lower hook mainly serves as a longitudinal limiter and load-bearing device. It works with the lower structure of the fork carriage to limit the vertical displacement of the forks. The upper hook functions as a lateral limiter and auxiliary load-bearing device. It works with the upper structure of the fork carriage to limit the horizontal movement of the forks, keeping the forks stable when adjusting the spacing between them. The displacement adjustment of the forks is mainly driven by a hydraulic cylinder mounted on the fork carriage.

[0003] Currently, the lower and upper hooks are mostly in direct contact with the fork carriage through friction. After continuous operation, the wear of the hooks will lead to an increase in the clearance between them, which will cause the forks to wobble during operation and affect the accuracy of fork movement.

[0004] The existing fork bodies, lower hooks, and upper hooks are mostly integrally welded structures (as shown in the instruction manual). Figure 7 As shown in the diagram, if the upper / lower hook is severely worn, the entire fork needs to be replaced. It is not possible to replace the damaged hook in part, and replacing the entire hook would waste materials (i.e., there are hooks that are less worn and do not need to be replaced). Therefore, the existing adjustable fork needs to be improved. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art and to propose a partially detachable adjustable fork.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A partially detachable adjustable fork includes a fork body, a lower hook, and an upper hook, and further includes a first placement plate and a second placement plate welded to the fork body. The first placement plate is symmetrically welded with a first limiting block and a limiting rod that fit the surface of the lower hook; A second limiting block and a first ear plate that are in contact with the first placement plate and are symmetrically distributed about the first placement plate are welded to the lower hook; The first long screw passes through the ear hole on the first ear plate and the first through hole on the first limiting block in sequence, and the end of the first long screw is fitted with a first nut, and the initial end of the first long screw is provided with a first abutting plate; The pin passes through the limiting hole on the limiting rod and the second through hole on the second limiting block in sequence, and the pin is interference-fitted with the limiting hole and the second through hole. The two ends of the pin are respectively provided with external threads, and the external threads are fitted with a second nut. The second placement plate is symmetrically welded with third limiting blocks that fit against the surface of the upper hook; The upper hook is welded with a second ear plate that contacts the second placement plate and is symmetrically distributed about the second placement plate; The second long screw passes through the ear hole on the second ear plate and the third through hole on the third limiting block in sequence, and the end of the second long screw is fitted with a third nut, and the initial end of the second long screw is provided with a second abutment plate; The second placement plate has T-slots, and T-blocks that correspond to and fit the T-slots are welded onto the upper hooks; The fastening screw passes through the T-block and connects to the T-slot.

[0007] Furthermore, a rolling component is provided on the top area of ​​the fork and on the lower hook.

[0008] Furthermore, the rolling assembly includes a U-shaped frame, a rotating shaft, and rollers. The U-shaped frame is welded to the fork body and the lower hook respectively; The pivot is rotatably mounted on the U-shaped frame, and a roller that contacts the fork carriage is fixed on the pivot.

[0009] Furthermore, the surfaces of the lower hook and the upper hook are respectively provided with a wear-resistant layer.

[0010] Furthermore, triangular reinforcing plates are symmetrically welded below the welding point between the first placement plate and the fork.

[0011] Furthermore, a triangular reinforcing bar is welded below the weld between the second placement plate and the fork.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. Reduced maintenance costs: Depending on the specific wear condition of the upper and lower hooks, selective partial disassembly and replacement can be performed without replacing the entire adjustable fork, thus avoiding the waste of undamaged fork bodies and other hook components due to wear of some hooks; 2. Improve replacement efficiency: The modular disassembly and assembly structure (such as long screws, nuts, pins, T-slots, etc.) makes the hook replacement process free of complicated tools and too many procedures, and can be quickly completed by disassembly and installation, effectively reducing equipment downtime and improving the forklift's operating efficiency. 3. Ensure installation accuracy: Through the cooperation of positioning structures such as the first limiting block and the limiting rod, and the second limiting block and the T-slot block, the installation position of the new hook can be accurately defined when it is installed, without repeated adjustments. This ensures the matching accuracy between the hook and the fork carriage after the hook is replaced, and guarantees the stability and forklift accuracy of the forks during subsequent forklift transportation. 4. Extend the service life of the forks: Only severely worn hooks are replaced locally, while unworn hooks can continue to be used until their service life is over, thus extending the overall service life of the adjustable forks and improving the economy of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 for Figure 1 Enlarged view of section A (labeled A); Figure 4 for Figure 2 Enlarged view of section B (labeled B); Figure 5 A schematic diagram of the scroll component installation; Figure 6 for Figure 5 Enlarged view of section C; Figure 7 This is a schematic diagram of an existing integrated adjustable forklift. Figure label: 1. Fork body; 2. Lower hook; 21. Second limiting block; 22. First ear plate; 3. Upper hook; 31. Second ear plate; 32. T-block; 4. First placement plate; 41. First limiting block; 42. Limiting rod; 5. Second placement plate; 51. Third limiting block; 52. T-slot; 6. First long screw; 7. First nut; 8. First contact plate; 9. Pin; 10. Second nut; 11. Second long screw; 12. Third nut; 13. Second contact plate; 14. Fastening screw; 15. U-shaped frame; 16. Rotating shaft; 17. Roller; 18. Wear-resistant layer. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: like Figures 1 to 4 As shown, a partially detachable adjustable fork includes a fork body 1, a lower hook 2 and an upper hook 3, and also includes a first placement plate 4 and a second placement plate 5 welded to the fork body 1 (a triangular reinforcing plate is symmetrically welded below the welding point of the first placement plate 4 and the fork body 1, and a triangular reinforcing rod is welded below the welding point of the second placement plate 5 and the fork body 1 to effectively improve the load-bearing capacity of the first placement plate 4 and the second placement plate 5). The first placement plate 4 is symmetrically welded with a first limiting block 41 and a limiting rod 42 that are in contact with the surface of the lower hook 2; The lower hook 2 is welded with a second limiting block 21 and a first ear plate 22 that is in contact with the first placement plate 4 and is symmetrically distributed about the first placement plate 4; The first long screw 6 passes through the ear hole on the first ear plate 22 and the first through hole on the first limiting block 41 in sequence, and the end of the first long screw 6 is fitted with a first nut 7, and the initial end of the first long screw 6 is provided with a first abutting plate 8. The pin 9 passes through the limiting hole on the limiting rod 42 and the second through hole on the second limiting block 21 in sequence, and the pin 9 is interference-fitted with the limiting hole and the second through hole. The two ends of the pin 9 are respectively provided with external threads, and the second nut 10 is fitted on the external threads. The second placement plate 5 is symmetrically welded with a third limiting block 51 that fits against the surface of the upper hook 3; A second ear plate 31 is welded onto the upper hook 3, which is in contact with the second placement plate 5 and is symmetrically distributed about the second placement plate 5; The second long screw 11 passes through the ear hole on the second ear plate 31 and the third through hole on the third limiting block 51 in sequence, and the end of the second long screw 11 is fitted with a third nut 12, and the initial end of the second long screw 11 is provided with a second abutting plate 13. The second placement plate 5 has a T-shaped groove 52, and the upper hook 3 has a T-shaped block 32 that corresponds to and fits the T-shaped groove 52. The fastening screw 14 passes through the T-block 32 and is connected to the T-slot 52.

[0015] To make the adjustable forks adjust the width more smoothly, require less driving force, and complete the adjustment action more efficiently, further optimizations to the above-described embodiments are made, such as... Figure 5 and Figure 6 As shown, the top area of ​​the fork body 1 and the lower hook 2 are respectively provided with rolling components.

[0016] The rolling assembly includes a U-shaped frame 15, a rotating shaft 16, and rollers 17. The U-shaped frame 15 is welded to the fork body 1 and the lower hook 2 respectively; The pivot 16 is rotatably mounted on the U-shaped frame 15, and a roller 17 that contacts the fork carriage is fixed on the pivot 16.

[0017] The advantages of this design are as follows: 1. Reduce frictional resistance and improve adjustment efficiency. The rolling assembly (roller 17 mounted on the U-shaped frame via shaft 16) converts the sliding friction between the fork body 1, lower hook 2, and fork carriage into rolling friction. The resistance of rolling friction is much less than that of sliding friction, making the adjustable fork width adjustment smoother, requiring less driving force, and enabling more efficient adjustment.

[0018] 2. Reduce wear and extend component life. Sliding friction causes severe wear on the contact surfaces of the fork body 1, lower hook 2, and fork carriage, while rolling friction significantly reduces wear. Through the cushioning and rolling action of the rolling components, the wear rate of each component can be effectively reduced, extending the service life of critical components such as the forks and fork carriage, and lowering equipment maintenance costs and replacement frequency.

[0019] 3. Improve the stability and smoothness of the adjustment process. The rolling characteristics of the rolling components make the forks move more smoothly during adjustment, avoiding the jamming and wobbling that may be caused by sliding friction. Especially in scenarios involving load-bearing goods or high-precision distance adjustment, this stability and smoothness ensure the accuracy of the adjustment process, prevents goods from shifting or equipment vibration, and improves the safety and reliability of operations.

[0020] 4. Adaptable to complex working conditions, enhancing practicality In complex operating conditions such as frequent fork spacing adjustments and heavy-duty operations, the advantages of rolling components become even more prominent. They can effectively cope with long-term, high-frequency adjustment needs, maintain the stable performance of the fork adjustment function, and enable the adjustable forks to operate efficiently under different loads and operating environments, thereby enhancing the practicality and adaptability of the equipment.

[0021] To further extend the service life of the upper hook 3 and the lower hook 2 and extend the replacement cycle, the above-described embodiment is further optimized, such as... Figure 1 , Figure 3 and Figure 6 As shown, the surfaces of the lower hook 2 and the upper hook 3 are respectively provided with wear-resistant layers. Specifically, the wear-resistant layers are made of polytetrafluoroethylene composite material. This material has an extremely low coefficient of friction and good wear resistance, which can significantly reduce the friction and wear between the hook and the fork carriage, extend the service life of the hook, reduce the generation of mating clearance, ensure the fork transport accuracy of long-term operation of the forks, and reduce maintenance and replacement costs.

[0022] The working process of this utility model is as follows: If severe wear is found in a certain part of the upper hook 3 or lower hook 2, it can be partially disassembled and replaced. (a) Replacement procedure for lower hook 2 When severe wear is detected in the lower hook 2 and it needs to be replaced, the operating steps are as follows: First, separate the adjustable forks from the fork carriage to ensure operational safety. Then, loosen and remove the first nut 7 and the second nut 10 sequentially to release their lock on the lower hook 2. Next, pull out the first long screw 6 and then remove the pin 9 to quickly remove the worn lower hook 2. When replacing the lower hook 2, the first limiting block 41 and the limiting rod 42 work together to accurately position the lower hook 2 without repeated adjustments. After positioning, insert the pin 9 and tighten the second nut 10 to vertically limit the lower hook 2; simultaneously, insert the first long screw 6 so that the first contact plate 8 fits against the first ear plate 22, and tighten the first nut 7 to horizontally fix the lower hook 2. Through dual vertical and horizontal limiting, the lower hook 2 is securely connected and can continue to be used.

[0023] (II) Replacement process for hook 3 When it is necessary to replace the upper hook 3, the operation steps are as follows: First, separate the adjustable forks from the fork carriage. Then, loosen and remove the third nut 12, remove the fastening screw 14, and then pull out the second long screw 11. Next, pull the upper hook 3 out horizontally. When replacing the upper hook 3, the installation position of the upper hook 3 can be precisely defined by the cooperation of the third limiting block 51, the T-slot 52, and the T-block 32. During installation, first insert the T-block 32 of the upper hook 3 into the T-slot 52 to achieve initial vertical positioning; then, insert the second long screw 11 so that the second abutment plate 13 fits against the second ear plate 31; then tighten the third nut 12, and then tighten the fastening screw 14 to achieve double horizontal positioning. Through the vertical positioning of the T-structure and the horizontal positioning of the second long screw 11 and the fastening screw 14, the upper hook 3 is firmly installed, ensuring its fitting accuracy with the fork carriage. In summary, this application allows for flexible partial replacement of the upper and lower hooks 2 based on their wear condition, enabling unworn hook components to continue serving, thereby ensuring the stability and service life of the adjustable forklift and improving overall operational efficiency.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A partially detachable adjustable fork, comprising a fork body (1), a lower hook (2), and an upper hook (3), characterized in that, It also includes a first placement plate (4) and a second placement plate (5) welded to the fork body (1). The first placement plate (4) is symmetrically welded with a first limiting block (41) and a limiting rod (42) that are in contact with the surface of the lower hook (2). The lower hook (2) is welded with a second limiting block (21) and a first ear plate (22) that is in contact with the first placement plate (4) and is symmetrically distributed about the first placement plate (4); The first long screw (6) passes through the ear hole on the first ear plate (22) and the first through hole on the first limiting block (41) in sequence, and the end of the first long screw (6) is fitted with a first nut (7), and the initial end of the first long screw (6) is provided with a first abutting plate (8). The pin (9) passes through the limiting hole on the limiting rod (42) and the second through hole on the second limiting block (21) in sequence. The pin (9) is interference-fitted with the limiting hole and the second through hole. The two ends of the pin (9) are respectively provided with external threads, and the external threads are fitted with a second nut (10). The second placement plate (5) is symmetrically welded with a third limiting block (51) that fits against the surface of the upper hook (3); The upper hook (3) is welded with a second ear plate (31) that is in contact with the second placement plate (5) and is symmetrically distributed about the second placement plate (5); The second long screw (11) passes through the ear hole on the second ear plate (31) and the third through hole on the third limiting block (51) in sequence, and the end of the second long screw (11) is fitted with a third nut (12), and the initial end of the second long screw (11) is provided with a second abutment plate (13). The second placement plate (5) has a T-slot (52) and the upper hook (3) has a T-block (32) that corresponds to and fits the T-slot (52). The fastening screw (14) passes through the T-block (32) and connects to the T-slot (52).

2. The partially detachable adjustable fork according to claim 1, characterized in that, Rolling components are respectively provided on the top area of ​​the fork (1) and the lower hook (2).

3. The partially detachable adjustable fork according to claim 2, characterized in that, The rolling assembly includes a U-shaped frame (15), a rotating shaft (16), and rollers (17). The U-shaped frame (15) is welded to the fork body (1) and the lower hook (2) respectively; The pivot (16) is rotatably mounted on the U-shaped frame (15), and a roller (17) that contacts the fork carriage is fixed on the pivot (16).

4. The partially detachable adjustable fork according to claim 1, characterized in that, The surfaces of the lower hook (2) and the upper hook (3) are respectively provided with wear-resistant layers (18).

5. A partially detachable adjustable fork according to claim 1, characterized in that, A triangular reinforcing plate is symmetrically welded below the welding point between the first placement plate (4) and the fork (1).

6. The partially detachable adjustable fork according to claim 1, characterized in that, A triangular reinforcing bar is welded below the welding point between the second placement plate (5) and the fork (1).

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