Forklift frame with adjusting structure

Abstract

The utility model discloses a forklift frame with an adjusting structure, which relates to the technical field of forklift frames and comprises a base, a support is fixedly connected above the base, and a lifting frame is arranged in the support and slidably connected with the support. The lifting frame is provided with fork teeth, and the fork teeth are in sliding connection with the lifting frame; the fork teeth are driven to move by rotating the lead screw, so that the distance between the fork teeth is changed, the carrying requirements of goods with various widths can be quickly met, the fork teeth can be tightly attached to the bottoms of the goods by operating the lead screw no matter narrow boxes or wide trays, and the goods can be conveniently carried. The goods are effectively prevented from shaking or falling off due to unstable supporting in the carrying process, and the adaptability of the forklift frame to different goods is greatly improved.

Description

Technical Field

[0001] This utility model specifically relates to the field of forklift frame technology, and more specifically to a forklift frame with an adjustable structure. Background Technology

[0002] Against the backdrop of rapid global economic development, the scale of logistics and industrial production continues to expand, and the volume of warehousing, handling and loading / unloading operations is increasing dramatically. The demand for efficient handling equipment is also becoming increasingly urgent. As a basic cargo handling tool, manual forklifts still play an important role in small and medium-sized enterprises, warehouses and some specific operational scenarios.

[0003] Traditional forklift frames have many problems in actual use. For example, the spacing of the fork teeth is usually fixed, making it difficult to adapt to goods of different sizes and shapes. When it is necessary to move wider or narrower goods, operators often need additional auxiliary tools or make complex adjustments. This not only increases the difficulty and time cost of operation, but may also lead to unstable handling of goods due to improper adjustment, posing a safety hazard.

[0004] In addition, there are shortcomings in the stability and safety of the forklift frame. When moving heavy objects or traveling on uneven ground, the forklift frame is prone to tilting or swaying, and there is a lack of effective anti-tipping protection mechanism. This not only threatens the personal safety of operators, but may also cause damage to goods and affect the normal operation of production and logistics. Utility Model Content

[0005] The purpose of this utility model is to provide a forklift frame with an adjustable structure. The fork teeth are slidably connected to the lifting frame, and a screw drive structure is used to allow the fork teeth to be flexibly adjusted according to the size and shape of the goods. When handling goods of different widths, the operator can rotate the wheel to drive the screw, and use the forward and reverse screws on the screw to precisely adjust the fork tooth spacing, thereby improving the adaptability of the forklift frame to various types of goods and avoiding situations where goods are unstable or cannot be picked up due to improper fork tooth spacing. In addition, the combination of the support legs, support plate and tightening screw at the front end of the base can be adjusted according to the actual working ground conditions, further enhancing the stability of the forklift during the handling process and preventing the forklift from tipping over; thus solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A forklift frame with an adjustable structure is characterized in that: it includes a base, a bracket is fixedly connected above the base, a lifting frame is provided inside the bracket and is slidably connected to the bracket; the lifting frame is provided with fork teeth, and the fork teeth are slidably connected to the lifting frame.

[0008] As a further technical solution of this utility model, the fork tooth is L-shaped and has a groove at its tail end. A hole is provided above the groove, and a lead screw is provided in the hole. Both ends of the lead screw are rotatably connected to the lifting frame through bearings.

[0009] As a further technical solution of this utility model, a hydraulic cylinder is provided in the middle part of the support above the base. The hydraulic cylinder is fixedly connected to the base, and the middle part of the hydraulic cylinder is fixedly connected to the support through a fixing block. A lifting rod is provided on the rear side of the hydraulic cylinder, and the lifting rod is movably connected to the hydraulic cylinder.

[0010] As a further technical solution of this utility model, a sprocket is fixedly connected to the top of the cylinder rod of the hydraulic cylinder, and a chain is installed in the groove of the sprocket. One end of the chain is fixedly connected to the lifting frame, and the other end is fixedly connected to the outer wall of the hydraulic cylinder with a fixing block.

[0011] As a further technical solution of this utility model, a pressure relief handle is movably connected to the fixed block in the middle of the hydraulic cylinder, and a pressure relief pipe is provided at the bottom of the pressure relief handle. A baffle is fixedly installed on the top of the pressure relief pipe, and a spring is installed in the middle of the pressure relief pipe baffle and the fixed block in the middle of the hydraulic cylinder. The other end of the pressure relief pipe extends into the return oil valve at the bottom of the hydraulic cylinder and is movably connected to the return oil valve.

[0012] As a further technical solution of this utility model, the lead screw has positive and negative threads, and one end of the lead screw extends to the outside of the lifting frame and is fixedly connected to a wheel; the upper part of the lifting frame is centrally controlled and is provided with multiple protective rods, which are fixedly connected to the lifting frame.

[0013] As a further technical solution of this utility model, rectangular sliding grooves are provided on both sides of the bracket, and pulleys are installed in the rectangular sliding grooves, and the pulleys are rotatably connected to the bracket; one end of the pulley is bolted to the upright plate on the lifting frame.

[0014] As a further technical solution of this utility model, the front end of the base is fixedly connected to two support legs, and the bottom of each support leg is provided with a groove, and a support plate is provided in the groove. The support plate is movably connected to the inner walls on both sides of the support leg. A tightening screw is fixedly connected to the support leg, and the other end of the tightening screw extends to the outside of the upper end of the support leg and is rotatably connected to the support leg.

[0015] As a further technical solution of this utility model, each of the support legs is equipped with a roller at its front end and is rotatably connected to the support leg. Each of the base sides opposite the support leg is provided with a steering wheel, and the steering wheel is bolted to the base.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The sliding connection of the fork teeth and the screw drive structure design of this utility model improve the convenience of adjusting the fork tooth spacing. Since the screw has positive and negative screws, the distance between the fork teeth can be easily changed by rotating the wheel. It can quickly adapt to the handling needs of goods of various widths. Whether it is a narrow box or a wide pallet, the fork teeth can be made to fit tightly against the bottom of the goods through simple operation, effectively preventing the goods from shaking or falling due to unstable support during handling, and greatly improving the adaptability of the forklift frame to different goods.

[0018] 2. In this utility model, the support leg structure at the front end of the base also helps to improve the overall safety of the forklift frame. The support plate at the bottom of the support leg can be adjusted according to the ground conditions. After being fixed by the tightening screw, it can enhance the stability of the forklift frame when it is stationary or moving slowly, effectively preventing the forklift frame from tipping over due to the shift of the center of gravity or uneven ground, and further ensuring the safety during operation.

[0019] 3. In this utility model, a hydraulic cylinder is provided above the base, which is connected to the lifting frame through a sprocket and a chain. The hydraulic cylinder provides power to drive the sprocket to rotate, thereby driving the chain to move, thus realizing the smooth lifting of the lifting frame. During operation, the lifting height can be precisely controlled to meet the loading and unloading needs of shelves of different heights, effectively improving the applicability of the forklift frame in different warehousing environments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This utility model Figure 1 A schematic diagram of the three-dimensional structure from another perspective.

[0022] Figure 3 This utility model Figure 2 A schematic diagram of the three-dimensional structure from another perspective.

[0023] Figure 4 This utility model Figure 3 A schematic diagram of the three-dimensional structure from the bottom perspective.

[0024] Figure 5 This utility model Figure 3 A magnified schematic diagram of a local structure.

[0025] Figure 6 This utility model Figure 4 A magnified schematic diagram of a local structure.

[0026] In the diagram: 1-base, 2-support leg, 3-bracket, 4-lifting frame, 5-fork tooth, 6-guard rod, 7-hydraulic cylinder, 8-sprocket, 9-chain, 10-lifting rod, 11-steering wheel, 12-lead screw, 13-rotating wheel, 14-tightening screw, 15-roller, 16-pressure relief handle, 17-pressure relief pipe, 18-support plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 In this embodiment of the utility model, a base 1 is included, and a bracket 3 is fixedly connected above the base 1. A lifting frame 4 is provided inside the bracket 3 and is slidably connected to the bracket 3. The lifting frame 4 is provided with fork teeth 5, and the fork teeth 5 are slidably connected to the lifting frame 4.

[0029] By adopting the above technical solution, the bracket 3 is fixedly connected above the base 1, providing a stable foundation support for the entire forklift frame. This ensures that the entire forklift frame structure will not easily shake or deform during the handling of goods. The sliding connection design between the bracket 3 and the lifting frame 4 ensures the lifting function while also allowing the lifting frame to remain stable during the lifting process through the cooperation of the rectangular sliding grooves set on both sides of the bracket 3 and the pulleys on the lifting frame 4.

[0030] Furthermore, the fork tines 5 are slidably connected to the lifting frame 4, allowing the spacing between the fork tines to be flexibly adjusted. In actual cargo handling scenarios, the width of different goods varies greatly, for example, from narrow small parts packaging to large palletized goods. This sliding connection design allows the fork tines 5 to be adjusted according to the width of the goods. Through subsequent transmission structures such as the lead screw 12, the operator can easily change the spacing between the fork tines 5 to ensure that the goods can be stably placed on the fork tines 5, effectively improving the adaptability of the forklift frame to goods of different sizes.

[0031] In this embodiment, the fork tooth 5 is L-shaped and has a groove at its tail end. A hole is provided above the groove, and a lead screw 12 is provided in the hole. Both ends of the lead screw 12 are rotatably connected to the lifting frame 4 through bearings.

[0032] By adopting the above technical solution, the fork tooth 5 is designed in an L-shape, which increases the contact area and support force between the fork tooth 5 and the goods. The L-shaped structure can better wrap the bottom edge of the goods. Especially for some irregularly shaped or heavy goods, the L-shaped fork tooth 5 can provide more stable support and prevent the goods from slipping off the fork tooth 5 during handling.

[0033] Furthermore, the lead screw 12 provides a control method for adjusting the spacing of the fork teeth 5. The lead screw 12 has a precise pitch. When handling pallets of different widths, the operator only needs to rotate the lead screw 12 to finely adjust the spacing of the fork teeth 5, so that the fork teeth 5 accurately fit the width of the pallet. This ensures that the goods remain balanced and stable during handling, and avoids the goods from tilting or falling due to improper spacing of the fork teeth 5, greatly improving the safety and accuracy of goods handling.

[0034] In this embodiment, a hydraulic cylinder 7 is provided in the middle part of the support 3 above the base 1. The hydraulic cylinder 7 is fixedly connected to the base 1, and the middle part of the hydraulic cylinder 7 is fixedly connected to the support 3 through a fixing block. A lifting rod 10 is provided on the rear side of the hydraulic cylinder 7, and the lifting rod 10 is movably connected to the hydraulic cylinder 7.

[0035] By adopting the above technical solution, the hydraulic cylinder 7 provides a power source for the lifting of the lifting frame 4. The lifting rod 10 on the rear side of the hydraulic cylinder 7 is movably connected to the hydraulic cylinder 7. The lifting rod 10 can accurately transmit the linear motion generated by the hydraulic cylinder 7 to the lifting frame 4. By controlling the amount of hydraulic oil entering and leaving the hydraulic cylinder 7, the extension and retraction length of the lifting rod 10 can be precisely controlled, thereby accurately adjusting the lifting height of the lifting frame 4. In actual operation, the operator can accurately lift or lower the goods to the specified height according to the height of the shelf or the placement position of the goods, improving the accuracy of goods placement and reducing problems such as collisions between goods and shelves caused by improper height control.

[0036] In this embodiment, a sprocket 8 is fixedly connected to the top of the cylinder rod of the hydraulic cylinder 7. A chain 9 is installed in the groove of the sprocket 8. One end of the chain 9 is fixedly connected to the lifting frame 4, and the other end is fixedly connected to the outer wall of the hydraulic cylinder 7 with the help of a fixing block.

[0037] By adopting the above technical solution, the cooperation between sprocket 8 and chain 9 achieves a smooth and uniform transmission of force. When the cylinder rod of hydraulic cylinder 7 rises or falls, it drives sprocket 8 to rotate. Since the teeth of sprocket and the chain links are tightly meshed, the linear motion of cylinder rod can be smoothly converted into the cyclic motion of chain 9, thereby driving the lifting frame 4 to rise and fall smoothly. The goods are more stable during the lifting process, reducing the risk of damage to the goods due to shaking.

[0038] In this embodiment, a pressure relief handle 16 is movably connected to the middle fixed block of the hydraulic cylinder 7, and a pressure relief pipe 17 is provided at the bottom of the pressure relief handle 16. A baffle is fixedly installed on the top of the pressure relief pipe 17, and a spring is installed in the middle of the baffle of the pressure relief pipe 17 and the middle fixed block of the hydraulic cylinder 7. The other end of the pressure relief pipe 17 extends into the return oil valve at the bottom of the hydraulic cylinder 7 and is movably connected to the return oil valve.

[0039] By adopting the above technical solution, when the pressure relief handle 16 is turned, it will drive the pressure relief pipe 17 to move downward. The other end of the pressure relief pipe 17 extends into the return oil valve at the bottom of the hydraulic cylinder 7 and is movably connected to it. When the pressure relief pipe 17 moves, it will open the return oil valve. As the return oil valve opens, the hydraulic oil in the rodless chamber of the hydraulic cylinder 7 flows back to the oil tank through the return oil valve under the action of the weight of the cargo. During the process, the pressure in the rodless chamber of the hydraulic cylinder 7 gradually decreases. Since the pressure in the rod chamber is relatively low, under the combined action of the weight of the cargo and the pressure difference between the rodless chamber and the rod chamber, the piston begins to drive the cylinder rod to descend.

[0040] In this embodiment, the lead screw 12 has positive and negative threads, and one end of the lead screw 12 extends to the outside of the lifting frame 4 and is fixedly connected to the wheel 13; the upper part of the lifting frame 4 is centrally controlled and is provided with multiple protective rods 6, which are fixedly connected to the lifting frame.

[0041] By adopting the above technical solution, positive and negative threads are opened on the lead screw 12, and combined with the rotating wheel 13 fixedly connected to one end, an efficient movement method is provided for adjusting the spacing of the fork teeth 5. The operator only needs to rotate the rotating wheel 13, and the lead screw 12 will rotate accordingly. Due to the action of the positive and negative threads, the fork teeth 5 that cooperate with the lead screw 12 move relative to each other, thereby quickly changing the spacing of the fork teeth 5. The adjustment of the spacing of the fork teeth 5 can be completed in a short time, adapting to the handling needs of goods of different widths and improving work efficiency.

[0042] Furthermore, the multiple guard bars 6 installed on the upper part of the lifting frame 4 provide important safety protection for the operators. During the handling of goods, especially when the goods are in a high position or when there is an unexpected shaking, the guard bars 6 can block the goods and prevent them from falling and injuring the operators.

[0043] In this embodiment, rectangular grooves are provided on both sides of the bracket 3, and pulleys are installed in the rectangular grooves and the pulleys are rotatably connected to the bracket 3; one end of the pulley is bolted to the upright plate on the lifting frame 4.

[0044] By adopting the above technical solution, the rectangular sliding grooves on both sides of the bracket 3 cooperate with the pulleys installed on the upright plate of the lifting frame 4 to provide precise guidance for the lifting of the lifting frame 4. During the lifting process, the pulleys move along the rectangular sliding grooves to ensure that the lifting frame 4 can only move in the vertical direction, avoiding left and right deviation or swaying during the lifting process. This allows the lifting frame 4 to remain stable when carrying goods, and ensures its stability during the lifting process regardless of the weight of the goods, thereby improving the safety of goods handling.

[0045] In this embodiment, the base 1 has two support legs 2 fixedly connected to its front end, and each support leg 2 has a groove at its bottom, and a support plate 18 is provided in the groove. The support plate 18 is movably connected to the inner walls on both sides of the support leg 2. A tightening screw 14 is fixedly connected to the support leg 2, and the other end of the tightening screw 14 extends to the outside of the upper end of the support leg 2 and is rotatably connected to the support leg 2.

[0046] By adopting the above technical solution, two support legs 2 are provided at the front end of the base 1, and a movable support plate 18 is provided at the bottom of the support legs 2. This can effectively cope with ground with different flatness. When the manual forklift is working on uneven ground, the position of the support plate 18 in the groove is adjusted so that it is in full contact with the ground, increasing the contact area with the ground, thereby dispersing the weight of the forklift and the goods, reducing the excessive local pressure caused by uneven ground, and reducing the risk of the forklift tilting or tipping over.

[0047] Furthermore, the support plate 18 is movably connected to the inner walls on both sides of the support leg 2, allowing the extension length of the support plate 18 to be changed according to actual needs, thereby adjusting the contact area between the support leg 2 and the ground. For lighter goods or when operating on relatively flat ground, the support plate 18 can be appropriately retracted to reduce the footprint and improve the maneuverability of the forklift; while when handling heavier goods or operating on soft ground, the support plate 18 can be extended to increase the support area, improve the load-bearing capacity and stability of the forklift, and adapt to the needs of different working conditions.

[0048] In this embodiment, each of the support legs 2 is equipped with a roller 15 at its front end and is rotatably connected to the support leg 2. Each of the base 1 opposite to the support leg 2 is provided with a steering wheel 11, and the steering wheel 11 is bolted to the base 1.

[0049] By adopting the above technical solution, the steering wheel 11 on one side of the base 1 cooperates with the roller 15 at the front end of the support leg 2, which improves the steering flexibility of the forklift. The steering wheel 11 can rotate at a large angle, and the operator can easily control the forklift to turn in narrow spaces, such as in the aisle between shelves. Whether it is a right-angle turn or a small-radius turn, the forklift can respond quickly, which improves the operating efficiency in complex warehousing environments.

[0050] The working principle of this utility model is as follows: First, the spacing between the fork teeth 5 is adjusted by rotating the rotating wheel 13 according to the width of the goods. Since the lead screw 12 has positive and negative threads, the rotation of the lead screw 12 drives the fork teeth 5 to slide relative to each other on the lifting frame 4, thereby changing the spacing between the fork teeth 5 so that the fork teeth 5 can adapt to goods of different widths.

[0051] By operating the hydraulic cylinder 7, the hydraulic oil pushes the piston of the hydraulic cylinder 7, causing the cylinder rod to rise. The sprocket 8 at the top of the cylinder rod rises accordingly. The rotation of the sprocket 8 drives the chain 9 that works with it to move. One end of the chain 9 is fixedly connected to the lifting frame 4, which in turn pulls the lifting frame 4 to slide upward along the rectangular slide grooves on both sides of the support 3, thereby lifting the goods.

[0052] When the goods need to be lowered upon reaching their destination, the pressure relief handle 16 is activated, causing the pressure relief pipe 17 to move downwards. The other end of the pressure relief pipe 17 extends into and is movably connected to the return valve at the bottom of the hydraulic cylinder 7. When the pressure relief pipe 17 is activated, the return valve opens. As the return valve opens, the hydraulic oil in the rodless chamber of the hydraulic cylinder 7 flows back to the oil tank through the return valve under the influence of the weight of the goods. During this process, the pressure in the rodless chamber of the hydraulic cylinder 7 gradually decreases. Since the pressure in the rod chamber is relatively low, under the combined action of the weight of the goods and the pressure difference between the rodless and rod chambers, the piston begins to drive the cylinder rod to descend, thereby realizing the placement of the goods.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A forklift frame with an adjustable structure, characterized in that: Includes a base (1), on which a bracket (3) is fixedly connected, and a lifting frame (4) is provided inside the bracket (3) and is slidably connected to the bracket (3); the lifting frame (4) is provided with fork teeth (5), and the fork teeth (5) are slidably connected to the lifting frame (4).

2. The forklift frame with an adjustable structure according to claim 1, characterized in that: The fork tooth (5) is L-shaped and has a groove at its tail end. A hole is provided above the groove, and a lead screw (12) is provided in the hole. Both ends of the lead screw (12) are rotatably connected to the lifting frame (4) through bearings.

3. The forklift frame with an adjustable structure according to claim 1, characterized in that: A hydraulic cylinder (7) is provided in the middle of the support (3) above the base (1). The hydraulic cylinder (7) is fixedly connected to the base (1), and the middle part of the hydraulic cylinder (7) is fixedly connected to the support (3) through a fixing block. A lifting rod (10) is provided on the rear side of the hydraulic cylinder (7), and the lifting rod (10) is movably connected to the hydraulic cylinder (7).

4. The forklift frame with an adjustable structure according to claim 3, characterized in that: The top of the cylinder rod of the hydraulic cylinder (7) is fixedly connected to a sprocket (8), and a chain (9) is installed in the groove of the sprocket (8). One end of the chain (9) is fixedly connected to the lifting frame (4), and the other end is fixedly connected to the outer wall of the hydraulic cylinder (7) with a fixing block.

5. The forklift frame with an adjustable structure according to claim 3, characterized in that: A pressure relief handle (16) is movably connected to the fixed block in the middle of the hydraulic cylinder (7), and a pressure relief pipe (17) is provided at the bottom of the pressure relief handle (16). A baffle is fixedly installed on the top of the pressure relief pipe (17), and a spring is installed in the middle between the baffle of the pressure relief pipe (17) and the fixed block in the middle of the hydraulic cylinder (7). The other end of the pressure relief pipe (17) extends into the return valve at the bottom of the hydraulic cylinder (7) and is movably connected to the return valve.

6. The forklift frame with an adjustable structure according to claim 2, characterized in that: The lead screw (12) has positive and negative threads, and one end of the lead screw (12) extends to the outside of the lifting frame (4) and is fixedly connected to a wheel (13); the upper part of the lifting frame (4) is centrally controlled and is provided with multiple protective rods (6), and the protective rods (6) are fixedly connected to the lifting frame (4).

7. The forklift frame with an adjustable structure according to claim 1, characterized in that: The bracket (3) has rectangular sliding grooves on both sides, and pulleys are installed in the rectangular sliding grooves. The pulleys are rotatably connected to the bracket (3). One end of the pulley is bolted to the upright plate on the lifting frame (4).

8. The forklift frame with an adjustable structure according to claim 1, characterized in that: The base (1) has two support legs (2) fixedly connected to its front end. Each support leg (2) has a groove at its bottom and a support plate (18) is provided in the groove. The support plate (18) is movably connected to the inner walls on both sides of the support leg (2). A tightening screw (14) is fixedly connected to the support leg (2). The other end of the tightening screw (14) extends to the outside of the upper end of the support leg (2) and is rotatably connected to the support leg (2).

9. The forklift frame with an adjustable structure according to claim 8, characterized in that: The front end of each of the support legs (2) is fitted with a roller (15) and is rotatably connected to the support leg (2). The base (1) opposite to the support leg (2) is provided with a steering wheel (11), which is bolted to the base (1).

Images