Power chassis of forklift

Abstract

The utility model discloses a power chassis of a forklift, which is mounted below a forklift frame body and comprises a pallet fork part positioned at the front part of the forklift frame body and a power part arranged at the rear part of the forklift frame body, a first wheel body mounting groove is formed in the pallet fork part, a first universal wheel is arranged in the first wheel body mounting groove, and a second universal wheel is arranged in the second wheel body mounting groove. A second wheel body mounting groove and a third wheel body mounting groove are formed in the power part, a power wheel is arranged in the second wheel body mounting groove, a second universal wheel is arranged in the third wheel body mounting groove, a driving motor for driving the power wheel is arranged in the power part, the first wheel body mounting groove is formed in two fork body positions of the pallet fork part, and the second wheel body mounting groove is formed in two fork body positions of the pallet fork part. The second wheel body mounting grooves are formed in the two sides of the power part; according to the utility model, through the innovative design, the omni-directional movement capability, the stability improvement, the power optimization and the accurate control are realized, the working performance and the adaptive capacity of the forklift are greatly enhanced, and particularly, the forklift can be efficiently operated in a complex environment.

Description

Technical Field

[0001] This utility model relates to a power chassis for a forklift. Background Technology

[0002] Forklifts, as a common material handling equipment, are widely used in warehousing, logistics, and manufacturing industries for moving and stacking goods. With the increasing demands for automation, efficiency, and flexibility in the logistics and warehousing industries, forklift design and technology are constantly evolving and optimizing. However, the traditional forklift chassis design still has some technical shortcomings, particularly in terms of mobility, stability, and steering flexibility, making it difficult to meet the needs of modern working environments.

[0003] Traditional forklifts typically employ a front-wheel drive and rear-wheel steering design. While this design performs well on most flat surfaces, it becomes cumbersome to operate in confined spaces or environments requiring frequent turns. Especially in areas between racks, narrow warehouse aisles, or crowded work areas, the forklift's large turning radius makes it difficult to maneuver flexibly within limited spaces, resulting in low operational efficiency.

[0004] Traditional forklift steering systems typically rely on mechanically connected steering mechanisms, which have limited steering angles and may become inflexible under high loads or complex environments. This results in forklifts performing less than expected during precise scheduling and delicate operations, especially when rapid adjustments to direction and position are required, where the steering system's responsiveness is often limited, failing to provide sufficient flexibility.

[0005] Traditional forklift designs often suffer from poor wheel configurations, resulting in inadequate stability under high loads, during rapid turns, or on uneven terrain. When transporting heavy loads, uneven load distribution or improper operation can lead to forklift tilting or tipping, impacting operational safety and efficiency. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model proposes a power chassis for forklifts. Through innovative design, it achieves omnidirectional motion capability, improved stability, optimized power, and precise control, greatly enhancing the working performance and adaptability of forklifts, especially for efficient operation in complex environments.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A power chassis for a forklift, mounted below the forklift frame, includes a fork section located at the front of the forklift frame and a power unit located at the rear of the forklift frame. The fork section has a first wheel mounting groove, in which a first swivel wheel is installed. The power unit has a second wheel mounting groove and a third wheel mounting groove, in which a drive wheel is installed. The third wheel mounting groove has a second swivel wheel installed. The power unit contains a drive motor for driving the drive wheel. The first wheel mounting groove is located at two fork positions of the fork section, the second wheel mounting groove is located on both sides of the power unit, and the third wheel mounting groove is located at the end of the power unit and between the two second wheel mounting grooves.

[0009] Preferably, both the first wheel mounting groove and the second wheel mounting groove are rectangular grooves, and a first universal wheel bracket is provided in the first wheel mounting groove.

[0010] Preferably, the first swivel wheel bracket includes a first connecting part that is bolted to the bottom of the fork part, and a first protrusion that is integrally formed with the first connecting part and protrudes from the first wheel body mounting groove, wherein the first swivel wheel is mounted at the bottom of the first protrusion.

[0011] Preferably, the third wheel mounting groove is a circular groove, and a second universal wheel bracket is provided inside the third wheel mounting groove.

[0012] Preferably, the second swivel wheel bracket includes a second connecting part that is bolted to the top of the power unit, and a second protrusion integrally formed with the second connecting part that protrudes from the mounting groove of the third wheel body, and the second swivel wheel is mounted at the bottom of the second protrusion.

[0013] Preferably, both the first and second omnidirectional wheels are omnidirectional wheel bodies with two wheels arranged side by side.

[0014] Preferably, the drive motor is provided in two sets, with each drive motor driving a corresponding power wheel for movement.

[0015] The beneficial effects of this utility model are:

[0016] This design achieves omnidirectional movement and rotation capabilities for the forklift by installing omnidirectional wheels (first and second omnidirectional wheels) on the chassis. This allows the forklift to maneuver flexibly in confined spaces, making turns, lateral movements, and 360-degree rotations, thus greatly improving the forklift's mobility and space utilization. In the design, the various wheel mounting slots (first, second, and third wheel mounting slots) of the power chassis are rationally arranged to ensure the forklift maintains good balance during operation. In particular, the location of the second omnidirectional wheel at the end of the power unit effectively distributes the load, reducing the risk of tilting when the forklift is under heavy load or on uneven ground, ensuring stable operation of the forklift in complex terrain.

[0017] The power chassis is equipped with a drive motor, which provides driving force through the drive wheels. This design optimizes the forklift's power transmission system, providing strong driving force and stable speed control through precise control of the drive motor and drive wheels, thereby improving the forklift's work efficiency and energy efficiency. The electric drive system also reduces maintenance costs and the failure rate of traditional internal combustion engine systems; by setting multiple wheel mounting slots at the rear of the power unit, the forklift can achieve more precise steering control. In particular, by utilizing the characteristics of the casters, the forklift can maintain high precision and efficiency when performing complex operations (such as turning, moving, and U-turns), allowing the operator to better control the forklift in more complex working conditions.

[0018] This design is suitable for various working environments, especially in confined spaces or scenarios requiring flexible turning, effectively enhancing the forklift's adaptability. By combining multi-directional swivel wheels and drive wheels, the forklift can move freely between different surfaces and obstacles, whether on flat, hard ground or in complex environments requiring turning and maneuvering. Attached Figure Description

[0019] Figure 1 This is a side view of the power chassis of a forklift according to the present invention;

[0020] Figure 2 This is an enlarged view of a partial structure of the power chassis of a forklift according to the present invention. Figure 1 ;

[0021] Figure 3 This is an enlarged view of a partial structure of the power chassis of a forklift according to the present invention. Figure 2 ;

[0022] Figure 4 This is an enlarged view of a partial structure of the power chassis of a forklift according to the present invention. Figure 3 ;

[0023] Figure 5 This is an enlarged view of a partial structure of the power chassis of a forklift according to the present invention. Figure 4 . Specific implementation methods

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0027] See Figure 1-5As shown, a power chassis for a forklift is installed below the forklift frame 1, including a fork section 2 located at the front of the forklift frame 1 and a power unit 3 located at the rear of the forklift frame 1. The fork section 2 is provided with a first wheel mounting groove 4, and a first universal wheel 5 is provided in the first wheel mounting groove 4. The power unit 3 is provided with a second wheel mounting groove 6 and a third wheel mounting groove 7. A drive wheel 8 is provided in the second wheel mounting groove 6, and a second universal wheel 9 is provided in the third wheel mounting groove 7. A drive motor 10 for driving the drive wheel 8 is provided in the power unit 3. The first wheel mounting groove 4 is located at the two fork positions of the fork section 2, the second wheel mounting groove 6 is located on both sides of the power unit 3, and the third wheel mounting groove 7 is located at the end of the power unit 3 and between the two second wheel mounting grooves 6.

[0028] This design incorporates casters (first and second casters) on both the forks and the drive unit, significantly improving the forklift's maneuverability. These casters allow the forklift to turn at multiple angles and operate precisely in confined spaces, particularly when frequent changes of direction are required or when operating in narrow aisles, greatly enhancing its flexibility. The forklift can easily change direction, adapting to complex working environments and improving efficiency. The design utilizes multiple wheels (such as the first and second casters, and the drive wheel) distributed across different locations on the forklift chassis. This wheel arrangement effectively distributes the forklift's load, ensuring stability under high loads or complex terrain conditions. In particular, the third wheel (second caster) located at the end of the drive unit helps improve the forklift's balance during turns, reducing the risk of tipping over.

[0029] The drive wheels (drive wheels 8 in the second wheel mounting slot 6) within the power unit are driven by a drive motor (drive motor 10), ensuring more efficient power transmission for the forklift. The configuration of drive motor 10 provides stronger driving force, adapting to more complex working environments and high-load tasks, thereby enhancing the forklift's working capacity, especially in large warehouses or when handling heavy materials, providing stable power output. Through multiple wheels (including swivel casters and drive wheels) installed in the forks and power unit, the forklift's steering and movement are more precise and independent. In particular, the first swivel caster installed in the forks allows the forklift to flexibly adjust its direction during load movement, while the configuration between the second swivel caster and drive wheel in the power unit makes the forklift's overall steering and forward / backward movement more stable and smooth.

[0030] The first wheel mounting groove 4 and the second wheel mounting groove 6 are both rectangular grooves, and the first wheel mounting groove 4 is provided with a first universal wheel bracket 11. The first universal wheel bracket 11 includes a first connecting part that is bolted to the bottom of the fork part 2, and a first protrusion that is integrally formed with the first connecting part and protrudes from the first wheel mounting groove 4. The first universal wheel 5 is installed at the bottom of the first protrusion.

[0031] The first wheel mounting slot 4 and the second wheel mounting slot 6 adopt a rectangular groove design, which makes the wheel installation more stable, reduces deviations during the installation process, and enhances the fixation and stability of the wheel. The shape of the rectangular groove can provide a larger contact area, which helps to distribute the force and improve the overall stability of the forklift. The design of the first swivel wheel bracket 11 allows the swivel wheel 5 to be firmly installed on the first protrusion, providing additional support and fixation. This structure effectively prevents the swivel wheel from loosening or becoming unstable after long-term use, improving the stability of the forklift in complex environments.

[0032] The first connecting part of the first universal wheel bracket 11 is fixed to the bottom of the fork section 2 with bolts. This method simplifies the installation process and ensures a firm connection between the wheel and the forklift frame. The bolt connection method is not only simple but also facilitates subsequent maintenance and replacement. In case of problems, maintenance personnel can quickly disassemble and replace the universal wheel bracket without disassembling the entire chassis structure, saving time and costs. The one-piece molded structure of the first universal wheel bracket 11 (including the first connecting part and the first protrusion) simplifies the manufacturing process, reduces the number of parts, improves the strength and durability of components, and reduces production costs.

[0033] The first swivel wheel 5 is mounted at the bottom of the first protrusion, ensuring smooth movement of the swivel wheel when the forklift turns. The swivel wheel can rotate freely when turning, providing the forklift with greater flexibility, especially in confined spaces or environments requiring frequent turning. Through precise bracket and wheel mounting design, the first swivel wheel can effectively cooperate with the forklift's steering system, improving the forklift's handling performance and enhancing its mobility and handling precision in complex environments.

[0034] The first swivel wheel bracket 11 is bolted to the bottom of the fork section 2, and the bracket itself has high strength. In this way, even under heavy load or frequent operation, the bracket can effectively withstand the impact force and load from the swivel wheel, extending the service life of the forklift; since the fixing position of the swivel wheel and the bracket is precisely calculated, the friction and impact force between the wheel and the bracket are effectively dispersed, thereby reducing wear and improving the durability of the entire system.

[0035] The third wheel mounting groove 7 is a circular groove, and a second universal wheel bracket 12 is provided in the third wheel mounting groove 7; the second universal wheel bracket 12 includes a second connecting part that is bolted to the top of the power unit 3, and a second protrusion that is integrally formed with the second connecting part and protrudes from the third wheel mounting groove 7, and the second universal wheel 9 is installed at the bottom position of the second protrusion.

[0036] The third wheel mounting slot 7 adopts a circular slot design, which makes the installation of the caster wheel bracket 12 more stable, can evenly distribute the force, and reduce stress concentration caused by unevenness of the slot during installation, thereby improving overall stability. The design of the second caster wheel bracket 12, which is fixed to the top of the power unit 3 with bolts, can effectively transfer external forces to the power unit, ensuring that the caster wheel can still work stably under high load conditions. The fixed position and structure of the bracket enhance the load-bearing capacity of the system and help extend the service life of the equipment.

[0037] The second caster wheel bracket 12 is bolted to the top of the power unit 3. This connection method facilitates assembly and disassembly, simplifying the installation process. During maintenance, staff can quickly inspect and replace the caster wheel bracket, reducing maintenance time and complexity. The second connecting part and the second protrusion are integrally molded, reducing the number of parts and manufacturing complexity. This integrated design not only reduces production costs but also improves the strength and stability of components, reducing the possibility of loosening or damage.

[0038] The second swivel wheel 9 is mounted at the bottom of the second protrusion, ensuring that the swivel wheel can rotate freely and providing better steering flexibility. This is especially important for the operation of industrial vehicles such as forklifts in confined spaces, improving control precision and flexibility, particularly in complex working environments. Through optimized bracket and wheel mounting positions, the second swivel wheel can more precisely match the vehicle's steering needs, avoiding resistance and friction during steering, and improving the vehicle's steering response speed and operability.

[0039] The first omnidirectional wheel 5 and the second omnidirectional wheel 9 are both omnidirectional wheels arranged side by side; the drive motor 10 is provided in two sets, and each drive motor 10 drives a power wheel 8 to move.

[0040] The first caster wheel 5 and the second caster wheel 9 adopt a dual-wheel parallel design, which can evenly distribute the load and improve the load-bearing capacity and stability of each caster wheel. The dual-wheel parallel design can effectively reduce the pressure on each wheel, reduce tire wear, and improve the durability and service life of the wheels. The dual-wheel design not only enhances stability, but also effectively distributes the pressure on each caster wheel, improving the balance of the equipment when moving, especially on uneven ground or under heavy loads, it can maintain better stability.

[0041] The use of casters allows the equipment to rotate freely and change direction. The dual-wheel arrangement provides better support and balance, making the equipment more flexible and stable when turning. The dual casters can easily turn in narrow or complex environments, greatly improving the equipment's mobility, especially in confined workspaces, reducing the turning radius and increasing work efficiency.

[0042] Each set of drive motors 10 moves the drive wheel 8 on one side. This configuration enables distributed drive, reducing the load on individual drive motors and lowering the risk of motor failure. This design improves system reliability, preventing the entire device from malfunctioning due to a single motor failure. By distributing power to two motors, the device can respond to control commands more quickly and accurately, enhancing the stability of power transmission and ensuring good power performance even under high-speed or high-load conditions.

[0043] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A power chassis for a forklift, mounted below the forklift frame, characterized in that: The forklift includes a fork section located at the front of the forklift frame and a power unit located at the rear of the forklift frame. The fork section has a first wheel mounting groove, in which a first swivel wheel is installed. The power unit has a second wheel mounting groove and a third wheel mounting groove. The second wheel mounting groove has a drive wheel installed in it, and the third wheel mounting groove has a second swivel wheel installed in it. The power unit contains a drive motor for driving the drive wheel. The first wheel mounting groove is located at the two fork positions of the fork section, the second wheel mounting groove is located on both sides of the power unit, and the third wheel mounting groove is located at the end of the power unit and between the two second wheel mounting grooves.

2. The power chassis of the forklift according to claim 1, characterized in that: Both the first wheel mounting slot and the second wheel mounting slot are rectangular slots, and the first omnidirectional wheel bracket is provided in the first wheel mounting slot.

3. The power chassis of the forklift according to claim 2, characterized in that: The first swivel wheel bracket includes a first connecting part that is bolted to the bottom of the fork part, and a first protrusion that is integrally formed with the first connecting part and protrudes from the first wheel body mounting groove. The first swivel wheel is mounted at the bottom of the first protrusion.

4. The power chassis of the forklift according to claim 1, characterized in that: The third wheel mounting slot is a circular slot, and a second universal wheel bracket is installed inside the third wheel mounting slot.

5. The power chassis of the forklift according to claim 4, characterized in that: The second omnidirectional wheel bracket includes a second connecting part that is bolted to the top of the power unit, and a second protrusion integrally formed with the second connecting part that protrudes from the mounting groove of the third wheel body. The second omnidirectional wheel is mounted at the bottom of the second protrusion.

6. The power chassis of the forklift according to any one of claims 1-5, characterized in that: Both the first and second omnidirectional wheels are omnidirectional wheels arranged side by side.

7. The power chassis of the forklift according to claim 6, characterized in that: The drive motor is provided in two sets, and each drive motor drives a corresponding power wheel to move.

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