Miniature electric light load carrying fork truck

Abstract

The utility model discloses a kind of miniature electric light load carrying fork trucks, belong to carrying tool.The utility model's miniature electric light load carrying fork truck, including electric walking chassis, seat, lifting mechanism, pallet fork and controller, electric walking chassis has two front wheels and two rear wheels, seat is installed in the rear of electric walking chassis, lifting mechanism is installed in the front of electric walking chassis, pallet fork is installed on lifting mechanism, lifting mechanism is driven by electric push rod to drive pallet fork lifting movement, controller is used to control electric walking chassis advance, retreat and steering and the telescopic movement of electric push rod.The utility model utilizes four-wheel electric walking chassis as the basis of light load carrying fork, integrated with seat and front end lifting pallet fork, realizes integrated compact structure layout, improves turnover and operating flexibility, can be flexibly moved in workshop and warehouse and other narrow space, control is also simple and convenient, improves carrying work efficiency, reduces manual labor intensity.

Description

Technical Field

[0001] This utility model relates to handling tools, and more specifically, to a mini electric light-duty forklift. Background Technology

[0002] Light-duty forklifts are core equipment for material handling in workshops. They can replace manual labor for short-distance transport of lightweight goods. With their flexible mobility, they are well-suited to the needs of narrow aisles and multi-station turnover in workshops, effectively improving material flow efficiency and reducing the labor intensity of operators.

[0003] Existing light-duty pallet forklifts are designed around the basic functions of light-duty handling in workshops. Core functions include picking up and lifting goods, flexible movement and steering within the work area, and some models also feature driver-assistance capabilities. Examples include "A Pallet Transport Vehicle" (published on May 31, 2019) in Chinese Patent Publication No. CN208916742U and "Electric Pallet Transporter with Hook" (published on March 9, 2021) in Chinese Patent Publication No. CN212669128U. These pallet forklifts primarily add a seat for operation to existing forklifts, but they remain based on the original forklift design. While they allow operators to travel alongside the vehicle, alleviating fatigue during long-distance transport, they still have several shortcomings in practical workshop applications.

[0004] First, it has poor turnover flexibility: because a seat has been added to the original turnover forklift, its overall size has increased, especially in the length direction, and the turning radius is larger, making it more difficult to turn in the narrow space of the workshop;

[0005] Second, it has poor maneuverability: its operation still relies on the original turnover forklift, and the movement and fork lifting control are poorly adapted to seated operation, making the operation not flexible enough.

[0006] Third, they are relatively bulky: the overall structure of this type of pallet truck is relatively bulky, its energy consumption is high, and its range is relatively poor.

[0007] Based on the aforementioned shortcomings of existing pallet trucks, it is necessary to design a mini electric light-duty pallet truck to solve the problems of existing pallet trucks being bulky, energy-intensive, and complex to operate. Summary of the Invention

[0008] 1. Technical problem to be solved by the utility model

[0009] The purpose of this utility model is to overcome the shortcomings of existing light-duty forklifts, such as poor turnover and operational flexibility, large structural size and heavy weight, and to provide a mini electric light-duty forklift. The technical solution of this utility model uses a four-wheel electric chassis as the basis for light-duty forks, and integrates a seat for seated operation and front lifting forks, realizing an integrated and compact structural layout, improving turnover and operational flexibility, and enabling flexible movement in narrow spaces such as workshops and warehouses. The operation is also simpler and more convenient, improving the efficiency of handling work and reducing the intensity of manual labor.

[0010] 2. Technical Solution

[0011] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0012] This utility model discloses a mini electric light-duty pallet truck, including an electric chassis, a seat, a lifting mechanism, forks, and a controller. The electric chassis has two front wheels and two rear wheels. The seat is installed at the rear of the electric chassis, and the lifting mechanism is installed at the front of the electric chassis. The forks are mounted on the lifting mechanism, which is driven by an electric push rod to move the forks up and down. The controller is used to control the forward, backward, and turning movements of the electric chassis, as well as the extension and retraction movements of the electric push rod.

[0013] Furthermore, the front wheel is a drive wheel, and the rear wheel is a steering wheel.

[0014] Furthermore, the electric walking chassis has longitudinal beams arranged at the front and rear, the front wheel is mounted on the front of the longitudinal beam and connected to the drive motor, the rear end of the longitudinal beam is provided with a shock absorber arm, and the rear wheel is mounted on the shock absorber arm.

[0015] Furthermore, the rear wheels are omnidirectional wheels.

[0016] Furthermore, the lifting mechanism includes a mounting base, a first load-bearing link, a second load-bearing link, and a fork connecting seat. The mounting base is fixedly installed at the front of the electric chassis. One end of the first load-bearing link is connected to the mounting base via hinge point A, and the other end of the first load-bearing link is connected to the fork connecting seat via hinge point B. One end of the second load-bearing link is connected to the fork connecting seat via hinge point C, and the other end of the second load-bearing link is connected to the mounting base via hinge point D, forming a parallel four-bar linkage ABCD. One end of the electric push rod is hinged to the mounting base or the front of the electric chassis, and the other end of the electric push rod is hinged to the first load-bearing link, the second load-bearing link, or the fork connecting seat. The forks are fixed horizontally or substantially horizontally to the fork connecting seat.

[0017] Furthermore, the seat is mounted on the rear of the electric chassis via a seat frame, and a battery mounting cavity is provided in the lower part of the seat frame, wherein a power battery for supplying power to the electric chassis and the electric push rod is provided.

[0018] Furthermore, at least one side of the seat also has an armrest, on which the controller is mounted.

[0019] Furthermore, the controller has a rocker arm for controlling the forward, backward, and steering movements of the electric chassis, and buttons or knobs for controlling the extension or retraction of the electric push rod.

[0020] Furthermore, foot pedals are also provided on both the left and right sides of the electric walking chassis.

[0021] 3. Beneficial effects

[0022] Compared with existing known technologies, the technical solution provided by this utility model has the following beneficial effects:

[0023] (1) A miniature electric light-duty pallet truck of the present invention includes an electric walking chassis, a seat, a lifting mechanism, forks and a controller. The electric walking chassis has two front wheels and two rear wheels. The seat is installed at the rear of the electric walking chassis. The lifting mechanism is installed at the front of the electric walking chassis. The forks are installed on the lifting mechanism. The lifting mechanism is driven by an electric push rod to drive the lifting movement of the forks. The controller is used to control the forward, backward and turning movements of the electric walking chassis and the extension and retraction movements of the electric push rod. The four-wheel electric walking chassis is used as the basis for the light-duty pallet truck. It integrates a seat for seated operation and a front lifting fork, realizing an integrated, miniaturized and compact structural layout, improving turnover and operational flexibility. It can move flexibly in narrow spaces such as workshops and warehouses. The operation is also simpler and more convenient, improving the efficiency of handling work and reducing the intensity of manual labor.

[0024] (2) The present invention provides a mini electric light-duty pallet truck with front wheels as drive wheels and rear wheels as steering wheels. Front-wheel drive can provide stronger traction, and rear-wheel steering can reduce the turning radius of backward movement, making it more suitable for working scenarios where goods are picked up and moved backward, thus improving the flexibility and control precision of the equipment in a narrow space.

[0025] (3) A mini electric light-duty forklift of this utility model has an electric walking chassis with longitudinal beams set at the front and rear. The longitudinal beams are extended at the front and rear to enhance the load-bearing capacity of the chassis and ensure the structural rigidity of the forklift under load. The front wheels are installed at the front of the longitudinal beams and connected to the drive motor. The rear end of the longitudinal beams is provided with shock-absorbing arms, and the rear wheels are installed on the shock-absorbing arms to buffer ground bumps, protect the stability of goods and the comfort of operators.

[0026] (4) The present invention provides a mini electric light-duty pallet truck with omnidirectional rear wheels, which enables complex movements such as turning in place and lateral translation of the rear wheels, further improving the mobility in narrow spaces and making it suitable for operation in densely stocked areas.

[0027] (5) The mini electric light-duty pallet truck of this utility model has a lifting mechanism of a parallel four-bar linkage mechanism. During the lifting process, the forks are always kept horizontal to avoid the goods from tilting and slipping, thus improving the safety of handling. Furthermore, the first and second load-bearing linkages are driven by electric push rods, which is simple and lightweight. At the same time, the load is distributed by multiple linkages, which can improve the structural stability of the lifting mechanism.

[0028] (6) A mini electric light-duty pallet truck of the present invention has a seat installed at the rear of the electric walking chassis via a seat frame. A battery mounting cavity is provided at the lower part of the seat frame. The battery mounting cavity is provided with a power battery for supplying power to the electric walking chassis and the electric push rod. The power battery is placed under the seat, which does not occupy extra working space and makes the overall structure of the forklift more compact. The weight of the battery is located at the rear of the chassis, which forms a front-to-back balance with the load of the front forks, preventing the forklift from tilting forward or backward and improving driving stability.

[0029] (7) The present invention provides a mini electric light-duty pallet truck, wherein at least one side of the seat has an armrest, and the controller is installed on the armrest. The operator can operate the vehicle while seated, reducing limb fatigue and improving ease of operation. At the same time, the controller is located on the armrest, which allows for blind operation with one hand, making it convenient for the operator to observe the fork working area and the driving route, thus reducing safety risks. In addition, the controller has a rocker arm for controlling the forward, backward and steering movements of the electric chassis, and buttons or knobs for controlling the extension or retraction of the electric push rod. The rocker arm controls the movement and steering, and the buttons / knobs control the lifting and lowering, which conforms to ergonomic habits, allowing the operator to quickly get started and making the operation simple and convenient.

[0030] (8) The present invention provides a mini electric light-duty pallet truck with foot pedals on the left and right sides of its electric walking chassis to provide foot support for the operator, avoid fatigue caused by long-term work, and is suitable for long-term continuous operation scenarios; at the same time, it expands the foot placement space for the operator and improves driving stability. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of a mini electric light-duty pallet truck according to the present invention.

[0032] Figure 2 This is a three-dimensional structural diagram of a miniature electric light-duty pallet truck according to this utility model from another angle;

[0033] Figure 3This is a longitudinal sectional view of a miniature electric light-duty pallet truck according to the present invention.

[0034] Figure 4 This is a schematic diagram of the electric chassis of a mini electric light-duty pallet truck according to the present invention.

[0035] Figure 5 This is a schematic diagram showing the lifting and lowering states of the parallel four-bar linkage lifting mechanism in this utility model.

[0036] Figure 6 This is a schematic diagram illustrating the usage status of a miniature electric light-duty pallet truck according to this utility model.

[0037] Explanation of the labels in the diagram:

[0038] 1. Electric walking chassis; 1-1. Front wheel; 1-2. Rear wheel; 1-3. Longitudinal beam; 1-4. Drive motor; 1-5. Shock absorber arm; 1-6. Power battery; 1-7. Foot pedal; 2. Seat; 2-1. Seat frame; 2-1a. Battery mounting cavity; 2-2. Handrail; 3. Lifting mechanism; 3-1. Electric push rod; 3-2. Mounting base; 3-3. First load-bearing link; 3-4. Second load-bearing link; 3-5. Fork connector; 4. Forks; 5. Controller. Detailed Implementation

[0039] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0040] [Example]

[0041] This embodiment presents a mini electric light-duty pallet truck, which adopts an integrated and compact layout design to solve the problems of poor flexibility and bulky structure of traditional pallet trucks in confined workshop environments. Combined with... Figures 1 to 3As shown, this mini electric light-duty pallet truck includes an electric chassis 1, a seat 2, a lifting mechanism 3, forks 4, and a controller 5. The electric chassis 1 has two front wheels 1-1 and two rear wheels 1-2, forming a four-wheel chassis structure. The seat 2 is installed at the rear of the electric chassis 1, the lifting mechanism 3 is installed at the front of the electric chassis 1, and the forks 4 are installed on the lifting mechanism 3, forming a "front fork, rear seat" layout. This layout conforms to the operator's visual habits and facilitates observation of the fork's working area. The lifting mechanism 3 is driven by an electric push rod 3-1 to move the forks 4 up and down, thereby allowing the forks 4 to lift goods off the ground for easy handling. The controller 5 is used to control the forward, backward, and turning movements of the electric chassis 1, as well as the extension and retraction movements of the electric push rod 3-1, enabling flexible operation of the mini electric light-duty pallet truck. Compared to existing light-duty forklifts, this vehicle utilizes a four-wheel electric chassis as the base for its light-duty forks, integrating a seat for seated operation and front-end lifting forks. This achieves an integrated, compact structural layout, significantly shortening the overall length of the vehicle, reducing the turning radius, and improving turnaround and operational flexibility. It can move flexibly in narrow spaces such as workshops and warehouses, and its operation is simpler and more convenient, improving material handling efficiency and reducing manual labor intensity.

[0042] Reference Figure 4 As shown, in this embodiment, preferably, the front wheel 1-1 is the drive wheel. When the fork 4 is loaded, the grip of the front wheel can be increased, providing stronger traction and thus improving driving stability. The rear wheel 1-2 is the steering wheel, which undertakes the direction adjustment function, can reduce the turning radius of backward movement, and is more suitable for the working scenario of moving backward after picking up goods, thus improving the flexibility and control precision of the equipment in a narrow space. Furthermore, the electric walking chassis 1 has longitudinal beams 1-3 arranged at the front and rear, which serve as the main load-bearing frame, extending through the chassis to enhance its load-bearing capacity, ensure the structural rigidity of the forklift under load, and provide a stable mounting foundation for each functional module. The longitudinal beams 1-3 can be made of square steel, which is beneficial for the overall weight reduction of the vehicle. The front wheels 1-1 are mounted at the front of the longitudinal beams 1-3 and connected to the drive motor 1-4. The drive motor 1-4 can independently control the movement of the two front wheels 1-1, realizing forward, reverse, and steering operations. The rear end of the longitudinal beams 1-3 is equipped with a shock-absorbing arm 1-5, which is a cantilever structure made of spring steel. The rear wheels 1-2 are mounted on the shock-absorbing arm 1-5, which can buffer ground bumps, protect the stability of goods, and ensure the comfort of operators. The rear wheels 1-2 are preferably omnidirectional wheels, which can realize complex movements such as turning on the spot and lateral translation, further improving the mobility in narrow spaces and making them suitable for operation in densely packed racking areas.

[0043] like Figure 3 and Figure 5As shown, the lifting mechanism 3 in this embodiment preferably adopts a parallel four-bar linkage. Specifically, the lifting mechanism 3 includes a mounting base 3-2, a first bearing link 3-3, a second bearing link 3-4, and a fork connecting seat 3-5. The mounting base 3-2 is fixedly installed at the front of the electric walking chassis 1. One end of the first bearing link 3-3 is connected to the mounting base 3-2 through hinge point A, and the other end of the first bearing link 3-3 is connected to the fork connecting seat 3-5 through hinge point B. One end of the second bearing link 3-4 is connected to the fork connecting seat 3-5 through hinge point C, and the other end of the second bearing link 3-4 is connected to the mounting base 3-2 through hinge point D, forming a parallel four-bar linkage ABCD. Hinge points A, B, C, and D correspond to the rotating joints between the links. During the lifting process, the forks always remain horizontal, preventing the goods from tilting and slipping, and improving the safety of handling. One end of the electric push rod 3-1 is hinged to the mounting base 3-2 or the front of the electric travel chassis 1, and the other end of the electric push rod 3-1 is hinged to the first load-bearing link 3-3, the second load-bearing link 3-4, or the fork connecting seat 3-5. The forks 4 are fixed horizontally or approximately horizontally to the fork connecting seat 3-5. The linear extension and retraction of the electric push rod 3-1 drives the entire linkage mechanism. The first and second load-bearing links cooperate with the electric push rod 3-1 for driving. The structure is simple and lightweight, and the load is distributed through multiple links, which improves the structural stability of the lifting mechanism. Figure 5 As shown, when the electric push rod 3-1 extends, it drives the forks 4 to rise; when it retracts, it lowers. The height difference H between rising and falling depends on the extension and retraction degree of the electric push rod 3-1. This is achieved by extending the forks 4 under the goods to be transported and lifting them off the ground. The forks 4 can be a one-piece fork plate structure with reinforcing ribs, suitable for situations where there is ample fork space under the goods. Alternatively, a spaced double fork structure can be used, suitable for situations where the bottom of the goods or the pallet has fork holes.

[0044] Reference Figures 1 to 3As shown, in this embodiment, the seat 2 is mounted on the rear of the electric chassis 1 via a seat frame 2-1. A battery mounting cavity 2-1a is located at the lower part of the seat frame 2-1, housing a power battery 1-6 for supplying power to the electric chassis 1 and the electric push rod 3-1. Placing the power battery 1-6 under the seat 2 does not occupy additional working space, making the overall forklift structure more compact. The battery weight is located at the rear of the chassis, creating a front-to-back balance with the load of the front forks, preventing the forklift from tilting forward or backward and improving driving stability. The power battery 1-6 can be detachable for easy removal and charging. Replacing multiple power batteries 1-6 can meet the needs of long-term continuous use of the mini electric light-duty forklift. In addition, at least one side of the seat 2 has an armrest 2-2, on which the controller 5 is mounted. This allows the operator to operate the controller while seated, reducing fatigue and improving ease of use. Furthermore, the controller 5's placement on the armrest enables one-handed blind operation, facilitating observation of the forklift's working area and travel path, thus enhancing safety and convenience. The controller 5 is preferably a Hall effect rocker controller, commonly used in the movement control of existing electric wheelchairs. It allows for flexible and precise one-handed operation. Specifically, the controller 5 has a rocker for controlling the forward, backward, and turning movements of the electric chassis 1, and buttons or knobs for controlling the extension or retraction of the electric push rod 3-1. The rocker controls movement and steering, while the buttons / knobs control lifting and lowering, conforming to ergonomic principles and allowing for quick and easy operation. The seat 2 has a cushion and backrest, both filled and supported with soft materials for enhanced comfort.

[0045] like Figure 1 and Figure 2 As shown, foot pedals 1-7 are also provided on the left and right sides of the electric walking chassis 1 to provide foot support for the operator, avoid fatigue caused by long-term work, and are suitable for long-term continuous operation scenarios; at the same time, they expand the foot placement space for the operator and improve driving stability. The foot pedals 1-7 can be made of bent sheet metal and fixed to the longitudinal beam 1-3 with screws.

[0046] Figure 6 The diagram shows the usage status of the aforementioned mini electric light-duty forklift. The goods to be transported are electric wheelchairs. During the transport process, the operator sits on seat 2 and moves one hand to the side of the goods to be transported via controller 5, so that the forks 4 are inserted into the bottom of the electric wheelchair in a low position. Then, the lifting mechanism 3 is controlled by controller 5 to lift the forks 4, so that the four wheels of the electric wheelchair are off the ground. At this time, controlling the mini electric light-duty forklift to move backward, turn, and move forward can realize the flexible movement of the electric wheelchair in the workshop.

[0047] This utility model discloses a mini electric light-duty pallet truck, which uses a four-wheel electric chassis as the basis for light-duty pallet forks. It integrates a seat for seated operation and a front lifting fork, realizing an integrated and compact structural layout, improving turnover and operational flexibility. It can move flexibly in narrow spaces such as workshops and warehouses, and the operation is simpler and more convenient, improving the efficiency of handling work and reducing the intensity of manual labor.

[0048] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A miniature electric light-duty pallet truck, characterized in that: The device includes an electric walking chassis (1), a seat (2), a lifting mechanism (3), forks (4), and a controller (5). The electric walking chassis (1) has two front wheels (1-1) and two rear wheels (1-2). The seat (2) is installed at the rear of the electric walking chassis (1). The lifting mechanism (3) is installed at the front of the electric walking chassis (1). The forks (4) are installed on the lifting mechanism (3). The lifting mechanism (3) is driven by an electric push rod (3-1) to drive the forks (4) to move up and down. The controller (5) is used to control the electric walking chassis (1) to move forward, backward, and turn, as well as the extension and retraction of the electric push rod (3-1).

2. The mini electric light-duty pallet truck according to claim 1, characterized in that: The front wheel (1-1) is the drive wheel, and the rear wheel (1-2) is the steering wheel.

3. The mini electric light-duty pallet truck according to claim 2, characterized in that: The electric walking chassis (1) has longitudinal beams (1-3) arranged in front and rear. The front wheel (1-1) is installed in front of the longitudinal beam (1-3) and connected to the drive motor (1-4). The rear end of the longitudinal beam (1-3) is provided with a shock-absorbing arm (1-5), and the rear wheel (1-2) is installed on the shock-absorbing arm (1-5).

4. The mini electric light-duty pallet truck according to claim 3, characterized in that: The rear wheels (1-2) are omnidirectional wheels.

5. The miniature electric light-duty pallet truck according to any one of claims 1 to 4, characterized in that: The lifting mechanism (3) includes a mounting base (3-2), a first bearing link (3-3), a second bearing link (3-4), and a fork connecting seat (3-5). The mounting base (3-2) is fixedly installed at the front of the electric walking chassis (1). One end of the first bearing link (3-3) is connected to the mounting base (3-2) through hinge point A, and the other end of the first bearing link (3-3) is connected to the fork connecting seat (3-5) through hinge point B. One end of the second bearing link (3-4) is connected to the fork connecting seat (3-5) through hinge point C. The connecting seat (3-5) is connected to the other end of the second bearing connecting rod (3-4) and the mounting seat (3-2) through the hinge point D, forming a parallel four-bar linkage ABCD; one end of the electric push rod (3-1) is hinged to the mounting seat (3-2) or the front of the electric walking chassis (1), and the other end of the electric push rod (3-1) is hinged to the first bearing connecting rod (3-3) or the second bearing connecting rod (3-4) or the fork connecting seat (3-5), and the fork (4) is fixed horizontally or approximately horizontally on the fork connecting seat (3-5).

6. The mini electric light-duty pallet truck according to claim 5, characterized in that: The seat (2) is mounted on the rear of the electric walking chassis (1) via a seat frame (2-1). The lower part of the seat frame (2-1) has a battery mounting cavity (2-1a), and the battery mounting cavity (2-1a) is provided with a power battery (1-6) for supplying power to the electric walking chassis (1) and the electric push rod (3-1).

7. The mini electric light-duty pallet truck according to claim 5, characterized in that: The seat (2) also has an armrest (2-2) on at least one side, and the controller (5) is mounted on the armrest (2-2).

8. The mini electric light-duty pallet truck according to claim 7, characterized in that: The controller (5) has a rocker for controlling the forward, backward and turning movements of the electric walking chassis (1) and a button or knob for controlling the extension or retraction of the electric push rod (3-1).

9. The mini electric light-duty pallet truck according to claim 5, characterized in that: The electric walking chassis (1) is also equipped with foot pedals (1-7) on both the left and right sides.

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