Forklift counterweight structure and forklift

Abstract

The utility model relates to a forklift balancing weight structure which comprises a main balance weight, a common-mode weight, a first movable balancing weight, a second movable balancing weight and a tailstock, the main balance weight and the common-mode weight are integrally cast and formed, and the first movable balancing weight and the second movable balancing weight are sequentially arranged and installed in a cavity formed by the tailstock, the main balance weight and the common-mode weight. According to the forklift balancing weight structure, the main balance weight, the common-mode weight, the first movable balancing weight and the second movable balancing weight are installed in the cavity, the appearance of the main balance weight is not changed, the main balance weight with the appearance can be matched with other weights to adapt to forklifts with different tonnage loads, the application range of the forklift balancing weight structure is widened, and meanwhile the mold opening cost is reduced; and the first movable balancing weight and the second movable balancing weight are arranged in the cavity, so that the forklift can be applied to different scenes, and the use cost is reduced. By applying the forklift balancing weight structure, the forklift also has the advantages that the stability of the forklift in the goods carrying process is guaranteed, and meanwhile the use cost of a user is reduced.

Description

Technical Field

[0001] This utility model relates to the field of intelligent logistics equipment technology, specifically a forklift counterbalance structure and a forklift. Background Technology

[0002] Counterbalance forklifts are a common type of forklift. Their core design principle is to use a rear-mounted counterweight to offset the weight of the goods, thereby maintaining the stability of the vehicle during operation.

[0003] A counterbalance forklift mainly consists of the following parts:

[0004] 1. Frame: As the main structure, it supports the various parts of the forklift;

[0005] 2. Forks and mast: Forks are used to insert and move goods, while mast is used to support the lifting and lowering of the forks;

[0006] 3. Counterweight: Located at the rear of the forklift, it is used to counteract the weight of the goods and ensure the stability of the vehicle;

[0007] 4. Drive system: Provides power to drive the wheels to rotate;

[0008] 5. Steering System: Controls the steering angle of the wheels to achieve the steering operation of the forklift;

[0009] 6. Braking system: Used to slow down or stop the forklift;

[0010] 7. Operation and control system: including joysticks, foot pedals, and control panels, used to control the movement, lifting, and tilting of the forklift.

[0011] The working principle of a counterbalance forklift is based on the fulcrum principle and weight distribution principle in physics. It supports the weight of the entire forklift and the goods through four fulcrums (two on the front wheels and two on the rear wheels), and achieves balance by adjusting the forces at the fulcrums. During handling, the weight of the goods will change the overall center of gravity of the forklift, and the counterbalance design can effectively counteract this change, ensuring the stability of the forklift.

[0012] In existing technologies, the counterweight of counterbalance forklifts is usually fixed in the design, that is, a fixed weight is configured for each tonnage. This makes it impossible to flexibly adjust the counterweight according to different cargo weights and operating scenarios. For example, when handling lighter cargo, an excessively heavy counterweight may cause the forklift's center of gravity to shift backward, affecting operational flexibility and steering performance, and making it difficult to handle heavier cargo, which may cause the forklift to tilt forward. Furthermore, because the counterweight weight varies for different tonnages, different molds need to be developed to add counterweight structures to adapt to the vehicle model. This method is cumbersome and uneconomical in the manufacturing process, increasing user costs and affecting user experience, which is not conducive to the promotion and application of such forklifts in the market. Utility Model Content

[0013] To overcome the shortcomings of the prior art, the first objective of this utility model is to provide a forklift counterweight structure. This ingenious counterweight structure allows the main counterweight, with its distinctive appearance, to be adapted to forklifts with different tonnage loads, without altering its appearance. This expands its application range while reducing mold costs. Furthermore, by incorporating two movable counterweights within the cavity, the forklift can be used in various scenarios, further reducing operating costs. The second objective of this utility model is to provide a forklift that, by applying the aforementioned counterweight structure, also ensures stability during goods handling while reducing user operating costs and enhancing the user experience.

[0014] The aforementioned forklift counterweight structure and the aforementioned forklift are technically related and belong to the same utility model concept.

[0015] To achieve the first utility model objective mentioned above, the present utility model adopts the following technical solution: a forklift counterweight structure, including a main counterweight, a common-mode counterweight, a detachable movable counterweight block one, a detachable movable counterweight block two, and a tail frame. The movable counterweight block one and the movable counterweight block two are sequentially arranged and installed in the cavity formed by the tail frame, the main counterweight, and the common-mode counterweight.

[0016] As a preferred embodiment of this utility model, both the first movable counterweight and the second movable counterweight are in the form of multiple single pieces; the second movable counterweight is flat, so that multiple second movable counterweights can be stacked on top of the first movable counterweight or the tailstock and located below the common-mode counterweight.

[0017] As a preferred embodiment of this utility model, the common mode weight has a symmetrical structure, including a main body and an extension, with the two extensions symmetrically arranged along the central axis of the main body.

[0018] In a preferred embodiment of this utility model, the main body is cut to form a pressure relief groove, the pressure relief groove is located at the top center of the main body, and the setting direction of the pressure relief groove is consistent with the installation direction of the common mold weight.

[0019] As a preferred embodiment of this utility model, the second movable counterweight is a cuboid structure with grooves formed on its sides for installing baffles, and two adjacent second movable counterweights can be fitted together.

[0020] As a preferred embodiment of this utility model, the two adjacent movable counterweights can be fitted together.

[0021] As a preferred embodiment of this utility model, the tail frame includes a mounting base plate, a mounting support plate, and a mounting side plate. Two mounting support plates are vertically mounted on both sides of the mounting base plate, and the top surfaces of the two mounting support plates are located on the same plane to form a mounting plane for the movable counterweights to be stacked sequentially. The mounting side plate is connected between the mounting base plate and the mounting support plate.

[0022] As a preferred embodiment of this utility model, the shape formed by the two mounting side plates and the mounting base plate is adapted to the shape of the movable counterweight and is used to support the movable counterweight.

[0023] As a preferred embodiment of this utility model, the main counterweight and the common mold weight are integrally cast.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: The forklift counterweight structure of this utility model is ingenious. It consists of a main counterweight, a common-mode counterweight, a first movable counterweight, a second movable counterweight, and a tailstock. The common-mode counterweight can be detachably installed within the main counterweight or integrally formed with the main counterweight through casting. Specifically, it can be customized according to actual needs. A cavity is formed between the main counterweight, the common-mode counterweight, and the tailstock for the first and second movable counterweights. In actual use, the first movable counterweight, located below the second movable counterweight, is installed first. After the first movable counterweight is fully installed… After the main counterweight is assembled, the second movable counterweight is then stacked on top of the first movable counterweight. The specific number of the first and second movable counterweights is determined based on the forklifts with different tonnage loads. Throughout the process, since the common-mode counterweight, the first movable counterweight, and the second movable counterweight are all located inside the main counterweight, there is no need to change the appearance of the main counterweight. This allows the main counterweight with this appearance to be adapted to forklifts with different tonnage loads when combined with the other counterweights, expanding its application range while reducing the mold cost of the main counterweight. Furthermore, by setting the first and second movable counterweights inside the cavity, the forklift can be used in different scenarios, reducing usage costs.

[0025] To achieve the second utility model objective mentioned above, the present utility model adopts the following technical solution: a forklift, including the forklift counterweight structure mentioned above.

[0026] Compared with the prior art, the beneficial effects of this utility model are: the forklift of this utility model, by applying the above-mentioned forklift counterweight structure, can adaptively adjust its tonnage load and expand its utilization rate. Users do not need to purchase multiple forklifts to achieve loads of different tonnages, which greatly reduces the user's purchase cost and enhances the user experience. Attached Figure Description

[0027] Figure 1This is a schematic diagram of a forklift counterweight structure in one embodiment;

[0028] Figure 2 This is a schematic diagram of a forklift counterweight structure in one embodiment;

[0029] Figure 3 This is a schematic diagram of the main counterweight in a forklift counterweight structure according to one embodiment;

[0030] Figure 4 This is a schematic diagram of the common modulus weight block in a forklift counterbalance structure according to one embodiment;

[0031] Figure 5 This is a schematic diagram of the movable counterweight in a forklift counterweight structure according to one embodiment;

[0032] Figure 6 This is a schematic diagram of the movable counterweight block two in a forklift counterweight structure according to one embodiment;

[0033] Figure 7 This is a schematic diagram of the tailstock structure in one of the forklift counterweight structures in the embodiment.

[0034] Reference numerals in the attached drawings: 1. Main counterweight; 1-1. Cavity; 2. Common mode counterweight; 2-1. Main body; 2-2. Extension; 2-3. Pressure relief groove; 3. Movable counterweight one; 4. Movable counterweight two; 4-1. Baffle groove; 5. Tail frame; 5-1. Mounting base plate; 5-2. Mounting support plate; 5-3. Mounting side plate; 5-4. Support plate; 6. Stop bar; 7. Baffle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0036] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0038] In existing technologies, the counterweight of counterbalance forklifts is usually fixed in the design, that is, a fixed weight is configured for each tonnage. This makes it impossible to flexibly adjust the counterweight according to different cargo weights and operating scenarios. For example, when handling lighter cargo, an excessively heavy counterweight may cause the forklift's center of gravity to shift backward, affecting operational flexibility and steering performance, and making it difficult to handle heavier cargo, which may cause the forklift to tilt forward. Furthermore, because the counterweight weight varies for different tonnages, different molds need to be developed to add counterweight structures to adapt to the vehicle model. This method is cumbersome and uneconomical in the manufacturing process, increasing user costs and affecting user experience, which is not conducive to the promotion and application of such forklifts in the market.

[0039] To solve the above technical problems, such as Figures 1 to 7 As shown, a forklift counterweight structure is designed to meet the needs of different scenarios, even forklifts with varying tonnage loads, maintaining vehicle stability during operation. The forklift counterweight structure in this embodiment mainly consists of a main counterweight 1, a common-mode counterweight 2, a detachable movable counterweight block 1 3, a detachable movable counterweight block 2 4, and a tailstock 5. Modularizing the main counterweight 1 ensures a consistent appearance across forklifts of 2-3.8 tons, meaning it is produced using the same mold, eliminating the need for additional molds. As is well known, mold-making is extremely costly. This embodiment, by standardizing the appearance of the main counterweight 1 across forklifts of the aforementioned tonnage, significantly reduces mold-making costs, thereby lowering the manufacturing costs of the main counterweight 1 and the forklift itself, achieving cost reduction and efficiency improvement.

[0040] Specifically, the forklift's counterweight structure is ingenious. It consists of a main counterweight 1, a common-mode counterweight 2, a first movable counterweight 3, a second movable counterweight 4, and a tailstock 5. The common-mode counterweight 2 can be detachably installed within the main counterweight 1, or it can be integrally cast with the main counterweight 1. Specifically, it can be customized according to actual needs. A cavity 1-1 is formed between the main counterweight 1, the common-mode counterweight 2, and the tailstock 5 for the first movable counterweight 3 and the second movable counterweight 4. In actual use, the first movable counterweight 3, located below the second movable counterweight 4, is installed first. After the first movable counterweight 3 is fully assembled, the second movable counterweight 4 is then installed. The movable counterweight 1 and movable counterweight 2 are stacked on top of the aforementioned movable counterweight 3. The specific number of movable counterweight 1 and movable counterweight 2 is determined according to the forklifts with different tonnage loads. Throughout the process, since the common-mode counterweight 2, movable counterweight 1 and movable counterweight 2 are all located inside the main counterweight 1, it is not necessary to change the appearance of the main counterweight 1. This allows the main counterweight 1 with this appearance to be adapted to forklifts with different tonnage loads when combined with the other counterweights, expanding its application range while reducing the mold opening cost of the main counterweight 1. Furthermore, by setting movable counterweight 1 and movable counterweight 2 inside the cavity 1-1, the forklift can be used in different scenarios, reducing the cost of use.

[0041] In actual use, the counterweight structure can be formed by combining a single main counterweight 1 with a common-mode counterweight 2, or by combining main counterweight 1, common-mode counterweight 2, and movable counterweight 3, or by combining main counterweight 1, common-mode counterweight 2, and movable counterweight 4, or by combining main counterweight 1, common-mode counterweight 2, movable counterweight 3, and movable counterweight 4. The specific combination method can be determined according to actual needs. The counterweight structure is usually located at the rear of the forklift to offset the weight of the goods and ensure the stability of the vehicle.

[0042] The tailstock 5 provides stable support and fixation for the counterweight structure, ensuring that it does not shift or loosen during forklift operation, thus guaranteeing the forklift's stability and safety. The counterweight structure is located at the center of the main counterweight 1, or symmetrically arranged along its central axis, further ensuring the forklift's stability during operation. The tailstock 5 is also a symmetrical structure. Specifically, it mainly consists of a mounting base plate 5-1, mounting support plates 5-2, and mounting side plates 5-3. The upper surface of the mounting base plate 5-1 is flat, primarily to facilitate the installation of the movable counterweight block 3. Two mounting plates 5-2 are vertically installed on both sides of the mounting base plate 5-1, with the top surfaces of the two mounting plates 5-2 on the same plane to form a mounting plane for stacking the movable counterweight 4. That is, the movable counterweight 4 can be stacked on the mounting plane formed by the two mounting plates 5-2. The movable counterweight 3 can be directly stacked on the upper surface of the mounting base plate 5-1, and the common-mode counterweight 2 is located above the movable counterweight 4, so that the three are spatially interconnected and the overall counterweight structure is compact, reducing the space occupied. The aforementioned mounting side plate 5-3 connects between the aforementioned mounting base plate 5-1 and the aforementioned mounting support plate 5-2. On one hand, this enhances the overall stability of the tail frame 5. On the other hand, by setting the mounting side plates 5-3 at a certain angle, the shape formed by the two mounting side plates 5-3 and the aforementioned mounting base plate 5-1 matches the shape of the movable counterweight block 3. Simultaneously, the mounting side plates 5-3 also provide support for the sides of the movable counterweight block 3. The shape here can be an inverted trapezoid, meaning the bottom surface of the movable counterweight block 3 is in contact with the surface of the aforementioned mounting base plate 5-1, and the two sides of the movable counterweight block 3 are in contact with the surface of the mounting side plate 5-3. This ensures that the movable counterweight block 3 will not shake or shift during operation, thereby improving the stability of the entire counterweight system. This contact arrangement also increases the contact area between the counterweight structure and the tail frame 5, thereby improving the overall strength of the structure and reducing damage caused by external impacts or vibrations. Through a fitted design, the movable counterweight can be flexibly adjusted according to different load requirements, thereby achieving a modular design and meeting the balance requirements under different working conditions. To further enhance the overall structural stability of the tailstock 5, a support plate 5-4 is also installed on the back of the mounting side plate 5-3, which provides support for the mounting side plate 5-3. Both the movable counterweight 1 3 and the movable counterweight 2 4 are in the form of multiple single pieces. This means that each movable counterweight 1 3 and each movable counterweight 2 4 can be designed as multiple pieces. However, the size and weight of each movable counterweight 1 3 are consistent, eliminating the need for multiple mold openings and reducing manufacturing costs. Similarly, the size and weight of the movable counterweight 2 4 are consistent.The aforementioned movable counterweight 2 4 is flat, allowing multiple movable counterweight 2 4 to be stacked above the aforementioned movable counterweight 3 or the aforementioned tailstock 5 and below the aforementioned common-mode counterweight 2. Multiple movable counterweight 2 4 can be stacked sequentially from bottom to top, further satisfying the needs of forklift use under different working conditions. Similarly, multiple movable counterweight 3 can be stacked sequentially from front to back or from back to front.

[0043] In this embodiment, to ensure the stability of the forklift during operation, the common-mode counterweight 2 has a symmetrical structure, comprising a main body 2-1 and extensions 2-2. The main body 2-1 and extensions 2-2 can be integrally cast using a casting process, and the material can be metal or natural mineral sand and gravel as the base material. The two extensions 2-2 are symmetrically arranged along the central axis of the main body 2-1. The main counterweight 1 has a mounting groove for mounting the common-mode counterweight 2. The main body 2-1 is located within the mounting groove, and the two extensions 2-2 extend outside the mounting groove and abut against the bottom edge of the mounting groove, increasing the contact area between the common-mode counterweight 2 and the main counterweight 1, thereby further ensuring the stability of the common-mode counterweight 2. To prevent the main body 2-1 of the common-mode weight 2 from being firmly attached to the top of the mounting groove and to further reduce the difficulty of disassembly and assembly, in this embodiment, a pressure-reducing groove 2-3 is formed by cutting at the center of the top of the main body 2-1, and the setting direction of the pressure-reducing groove 2-3 is consistent with the installation direction of the common-mode weight 2. The presence of some air in the pressure-reducing groove 2-3 can reduce the difficulty of removing the common-mode weight 2 from the cavity 1-1.

[0044] The aforementioned movable counterweight 4 is a cuboid structure with grooves 4-1 on its sides for mounting the retaining strip 6. Two adjacent movable counterweights 4 can be fitted together. The grooves 4-1, in conjunction with the retaining strip 6, form a stable limiting structure, preventing the movable counterweights 4 from shifting or wobbling during forklift operation, thus improving the stability of the entire counterweight system. The grooves 4-1 also provide a standardized mounting interface for the movable counterweights, allowing for quick replacement or adjustment according to different load requirements, achieving modular design and improving the forklift's flexibility and adaptability. The cooperation between the grooves 4-1 and the retaining strip 6 also ensures the accurate positioning of the movable counterweights 4 on the tailstock 5, optimizing the weight distribution, making the forklift's center of gravity more reasonable, and improving operational stability. The cooperation between the grooves 4-1 and the retaining strip 6 also effectively prevents the movable counterweights 4 from loosening due to external impact or vibration during forklift operation, thereby improving forklift safety. Similarly, the aforementioned movable counterweight 3 is equipped with limiting baffles 7 at the front and rear. The baffles 7 are detachably mounted on the tailstock 5 via screws or other connecting parts. The position of the baffles 7 can be moved forward or backward depending on the number of movable counterweights 3, thereby ensuring the stability of the movable counterweights 3 installed between the two baffles 7. Two adjacent movable counterweights 3 can be fitted together, thus ensuring the overall stability of the counterweight structure.

[0045] The forklift counterweight structure in this embodiment is ingenious. It consists of a main counterweight 1, a common-mode counterweight 2, a first movable counterweight 3, a second movable counterweight 4, and a tailstock 5. The common-mode counterweight 2 can be detachably installed within the main counterweight 1, or it can be integrally formed with the main counterweight 1 through casting. Specifically, it can be customized according to actual needs. A cavity 1-1 is formed between the main counterweight 1, the common-mode counterweight 2, and the tailstock 5 for the first movable counterweight 3 and the second movable counterweight 4. In actual use, the first movable counterweight 3, located below the second movable counterweight 4, is installed first. After the first movable counterweight 3 is fully assembled, the second movable counterweight 4 is then installed. The movable counterweights 1 and 2 are stacked sequentially on top of the aforementioned movable counterweight 3. The specific number of movable counterweights 1 and 2 is determined according to the forklifts with different tonnage loads. Throughout the process, since the common-mode counterweight 2, movable counterweight 1, and movable counterweight 2 are all located inside the main counterweight 1, it is not necessary to change the appearance of the main counterweight 1. This allows the main counterweight 1 with this appearance to be adapted to forklifts with different tonnage loads when combined with the other counterweights, expanding its application range while reducing the mold opening cost of the main counterweight 1. Furthermore, by setting movable counterweights 1 and 2 inside the cavity 1-1, the forklift can be used in different scenarios, reducing usage costs.

[0046] The forklift counterbalance structure described in the above embodiments can be applied to forklifts, and can also be applied to other types of counterbalanced vehicles.

[0047] 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.

[0048] Although this document frequently uses reference numerals from the accompanying drawings: 1. Main counterweight; 1-1. Cavity; 2. Common mode counterweight; 2-1. Main body; 2-2. Extension; 2-3. Pressure relief groove; 3. Movable counterweight one; 4. Movable counterweight two; 4-1. Baffle groove; 5. Tail frame; 5-1. Mounting base plate; 5-2. Mounting support plate; 5-3. Mounting side plate; 5-4. Support plate; 6. Stop bar; 7. Baffle, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A forklift counterbalance structure, characterized in that: It includes a main counterweight (1), a common-mode counterweight (2), a detachable movable counterweight block one (3), a detachable movable counterweight block two (4), and a tail frame (5). The movable counterweight block one (3) and the movable counterweight block two (4) are sequentially arranged and installed in the cavity (1-1) formed by the tail frame (5), the main counterweight (1), and the common-mode counterweight block (2).

2. The forklift counterbalance structure according to claim 1, characterized in that: Both the first movable counterweight (3) and the second movable counterweight (4) are multiple single pieces; the second movable counterweight (4) is flat, so that multiple second movable counterweights (4) can be stacked on top of the first movable counterweight (3) or the tail frame (5) and located below the common mode counterweight (2).

3. The forklift counterweight structure according to claim 1, characterized in that: The common mode weight (2) has a symmetrical structure, including a main body (2-1) and an extension (2-2), with the two extensions (2-2) arranged symmetrically along the central axis of the main body (2-1).

4. The forklift counterweight structure according to claim 3, characterized in that: The main body (2-1) is cut to form a pressure relief groove (2-3). The pressure relief groove (2-3) is located at the top center of the main body (2-1), and the setting direction of the pressure relief groove (2-3) is consistent with the installation direction of the common mode weight (2).

5. A forklift counterbalance structure according to claim 3, characterized in that: The movable counterweight block 2 (4) has a cuboid structure and a groove (4-1) for installing the baffle (6) is formed on the side. The two movable counterweight blocks 2 (4) that are adjacent to each other can be fitted together.

6. A forklift counterbalance structure according to claim 3, characterized in that: The two adjacent movable counterweights (3) can be fitted together.

7. A forklift counterbalance structure according to claim 6, characterized in that: The tail frame (5) includes a mounting base plate (5-1), a mounting support plate (5-2), and a mounting side plate (5-3). The two mounting support plates (5-2) are vertically mounted on both sides of the mounting base plate (5-1). The top surfaces of the two mounting support plates (5-2) are located on the same plane to form a mounting plane for the movable counterweight block two (4) to be stacked in sequence. The mounting side plate (5-3) is connected between the mounting base plate (5-1) and the mounting support plate (5-2).

8. A forklift counterbalance structure according to claim 7, characterized in that: The shape formed by the two mounting side plates (5-3) and the mounting base plate (5-1) is adapted to the shape of the movable counterweight (3) and is used to support the movable counterweight (3).

9. A forklift counterbalance structure according to claim 1, characterized in that: The main counterweight (1) and the common mold weight (2) are integrally cast.

10. A forklift, characterized in that: The forklift counterweight structure includes any one of claims 1 to 9.

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