Three-fulcrum forklift capable of adjusting angle of front fork

Abstract

The utility model discloses a three-fulcrum forklift capable of adjusting the angle of a front fork, which belongs to the technical field of forklifts and is characterized by comprising a three-fulcrum forklift frame and a pallet fork positioned at the front end of the three-fulcrum forklift frame, the pallet fork comprises a lifting frame and a front fork frame, the front fork frame is mounted on the lifting frame in a sliding manner, and the front fork frame is mounted on the lifting frame in a sliding manner. A lifting mechanism used for vertically lifting the front fork frame is installed on the lifting frame, two first rotating seats and a second rotating seat are installed at the front end of the three-fulcrum forklift frame, one end of the lifting frame is rotatably installed on the first rotating seats, and the other end of the lifting frame is rotatably installed on the second rotating seats. A driving assembly used for driving the pallet forks to conduct angle adjustment is installed between the second rotating base and the other end of the lifting frame. The lifting device has the advantages that the stability of goods is improved, safety is improved, and the lifting device adapts to different working environments.

Description

Technical Field

[0001] This utility model belongs to the field of forklift technology, and more specifically it relates to a three-point forklift with adjustable front fork angle. Background Technology

[0002] A forklift is a wheeled industrial vehicle used for loading, unloading, stacking, and short-distance transport of palletized goods. It is characterized by high efficiency, ease of operation, and maneuverability. It is widely used in factories, warehouses, railway stations, ports, and airports, and is an indispensable piece of equipment for pallet and container transport.

[0003] Most existing forklifts are designed to lift goods vertically. Vertical lifting limits the flexibility of loading and unloading, making loading and unloading operations difficult, increasing operational complexity and safety hazards. Moreover, such forklifts need to work on ground with strong load-bearing capacity when loading goods. If the ground is uneven, it will seriously affect the safety and stability of loading and unloading. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a three-point forklift with adjustable front fork angle, which has the advantages of improving cargo stability, increasing safety and adapting to different working environments.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An adjustable fork angle three-point forklift includes a three-point forklift frame and forks located at the front end of the three-point forklift frame. The forks include a lifting frame and a fork carriage. The fork carriage is slidably mounted on the lifting frame. A lifting mechanism for vertically lifting the fork carriage is mounted on the lifting frame. A first rotating seat and a second rotating seat are mounted at the front end of the three-point forklift frame. Two first rotating seats are provided. One end of the lifting frame is rotatably mounted on the first rotating seat. A drive assembly for driving the forks to adjust their angle is installed between the second rotating seat and the other end of the lifting frame.

[0007] The drive assembly includes a first hydraulic cylinder and a second hydraulic cylinder. One end of the first hydraulic cylinder is rotatably mounted on a second rotating seat, and the output end of the first hydraulic cylinder is rotatably mounted on a lifting frame. The second hydraulic cylinder is rotatably mounted on the second rotating seat and located below the first hydraulic cylinder. The output end of the second hydraulic cylinder is rotatably mounted on the lifting frame. The first hydraulic cylinder and the second hydraulic cylinder are arranged in a triangle between the three-point forklift frame and the forks.

[0008] The advantages of this scheme are at least as follows: When transporting goods, the lifting mechanism is activated first, which lifts the fork and the goods on it to a certain height on the lifting frame. Then, the first and second hydraulic cylinders are activated, which drive the lifting frame to rotate at the front end of the three-point forklift frame. This adjusts the angle of the lifting frame and the goods on the fork, improving the stability of the goods during transport and preventing them from being squeezed or impacted during handling. Moreover, adjusting the angle of the fork helps the forklift operate effectively on slopes or uneven surfaces, reducing the risk of forklift rollover during transport and improving the overall safety and efficiency of the vehicle.

[0009] The present invention is further configured such that: a first U-shaped plate and a second U-shaped plate are installed on the side wall of the lifting frame, and the output ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively installed on the first U-shaped plate and the second U-shaped plate.

[0010] The advantages of this scheme are at least as follows: the structure of the first U-shaped plate and the second U-shaped plate can effectively increase lateral stiffness and load-bearing capacity, better distribute the load, reduce local stress concentration, and improve the connection strength and stability between the lifting frame and the first and second hydraulic cylinders.

[0011] The present invention is further configured such that: a third U-shaped plate and a horizontal plate are installed on the side wall of the lifting frame, the horizontal plate is located directly below the third U-shaped plate, and an mounting plate is installed between the horizontal plate and the third U-shaped plate, a side plate is installed on the mounting plate, and one end of the lifting frame is rotatably mounted on a first rotating seat through the side plate.

[0012] The advantages of this scheme are at least as follows: the setting of the third U-shaped plate and the cross plate can further increase the rigidity and strength of the side wall, which is conducive to bearing greater weight. The setting of the mounting plate and the side plate makes the installation and rotation of the lifting frame on the three-point forklift frame more convenient and flexible.

[0013] The present invention is further configured such that a fourth U-shaped plate for reinforcing the strength of the lifting frame is also installed on the side wall of the lifting frame.

[0014] The advantages of this scheme are at least as follows: the addition of a fourth U-shaped plate to the side wall of the lifting frame further enhances the strength and stability of the overall structure.

[0015] The present invention is further configured such that a baffle is installed on the three-point forklift frame, the baffle being made of several thin steel bars welded to the three-point forklift frame.

[0016] The advantages of this solution are at least as follows: the net can effectively prevent items from falling and thus prevent injury to the driver, while also providing good protection and improving the overall safety of three-point forklift operation.

[0017] The present invention is further configured such that: a pressure sensor is provided on the front fork frame, and a buzzer is installed on the side wall of the lifting frame; the pressure sensor is electrically connected to the buzzer through a controller and a power supply.

[0018] The advantages of this scheme are at least as follows: when the pressure sensor detects an overload, the controller transmits the signal to the buzzer, which then emits a clear audible alarm, improving the timeliness and reliability of overload warnings, preventing overloaded operations, and reducing safety hazards.

[0019] In summary, the present invention has at least the following advantages:

[0020] 1. By setting up a drive component, when transporting goods, the lifting mechanism is activated first. The lifting mechanism lifts the front fork and the goods on the front fork to a certain height on the lifting frame. Then, the first and second hydraulic cylinders are activated. The first and second hydraulic cylinders drive the lifting frame to rotate at the front end of the three-point forklift frame, thereby adjusting the angle of the lifting frame and the goods on the front fork. This improves the stability of the goods during transportation and avoids the goods being squeezed and impacted during handling. Moreover, by adjusting the angle of the front fork, the forklift can be effectively operated on slopes or uneven surfaces, reducing the risk of the forklift tipping over during transportation and improving the safety and overall work efficiency of the vehicle.

[0021] 2. By setting the first U-shaped plate and the second U-shaped plate, the structure of the first U-shaped plate and the second U-shaped plate can effectively increase the lateral stiffness and load-bearing capacity, better distribute the load, reduce local stress concentration, and improve the connection strength and stability between the lifting frame and the first hydraulic cylinder and the second hydraulic cylinder. The setting of the third U-shaped plate and the cross plate can further increase the stiffness and strength of the side wall, which is conducive to bearing greater weight. The setting of the mounting plate and the side plate makes the installation and rotation of the lifting frame on the three-point forklift frame more convenient and flexible.

[0022] 3. By setting up a safety net, the net can effectively prevent items from falling and avoid injury to the driver. It also provides good protection and improves the overall safety of operating a three-point forklift. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of this embodiment;

[0024] Figure 2 This is an exploded view diagram of this embodiment;

[0025] Figure 3 This is a schematic diagram of the three-point forklift frame in this embodiment;

[0026] Figure 4 This is a schematic diagram of the overall forklift configuration in this embodiment.

[0027] Reference numerals: 1. Three-point forklift frame; 2. Forks; 201. Lifting frame; 202. Front fork frame; 3. Lifting mechanism; 4. First rotating seat; 5. Second rotating seat; 6. Drive assembly; 601. First hydraulic cylinder; 602. Second hydraulic cylinder; 7. First U-shaped plate; 8. Second U-shaped plate; 9. Third U-shaped plate; 10. Cross plate; 11. Loading plate; 12. Side plate; 13. Fourth U-shaped plate; 14. Guard net; 15. Pressure sensor; 16. Buzzer. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] A three-point forklift with adjustable fork angle, such as Figure 1 As shown, the forklift includes a three-point forklift frame 1 and forks 2 located at the front end of the three-point forklift frame 1. The forks 2 include a lifting frame 201 and a front fork carriage 202. The front fork carriage 202 is slidably mounted on the lifting frame 201. A lifting mechanism 3 for vertically lifting the front fork carriage 202 is installed on the lifting frame 201. The lifting mechanism 3 consists of a lifting cylinder, a lifting chain, a guide pulley, and a guide wheel frame.

[0030] like Figure 2 , Figure 3 As shown, a first rotating seat 4 and a second rotating seat 5 are installed at the front end of the three-point forklift frame 1. There are two first rotating seats 4. One end of the lifting frame 201 is rotatably mounted on the first rotating seat 4. A drive assembly 6 for driving the forks 2 to adjust their angle is installed between the second rotating seat 5 and the other end of the lifting frame 201.

[0031] The drive assembly 6 includes a first hydraulic cylinder 601 and a second hydraulic cylinder 602. One end of the first hydraulic cylinder 601 is rotatably mounted on the second rotating seat 5, and the output end of the first hydraulic cylinder 601 is rotatably mounted on the lifting frame 201. The second hydraulic cylinder 602 is rotatably mounted on the second rotating seat 5 and located below the first hydraulic cylinder 601. The output end of the second hydraulic cylinder 602 is rotatably mounted on the lifting frame 201. The first hydraulic cylinder 601 and the second hydraulic cylinder 602 are arranged in a triangle between the three-point forklift frame 1 and the forks 2. It is worth mentioning that both the first hydraulic cylinder 601 and the second hydraulic cylinder 602 are hydraulic cylinders.

[0032] like Figure 4As shown, in one embodiment, to increase the lateral stiffness and load-bearing capacity of the lifting frame 201, a first U-shaped plate 7 and a second U-shaped plate 8 are installed on the side wall of the lifting frame 201. The output ends of the first hydraulic cylinder 601 and the second hydraulic cylinder 602 are respectively installed on the first U-shaped plate 7 and the second U-shaped plate 8. Two third U-shaped plates 9 and a horizontal plate 10 are installed on the side wall of the lifting frame 201. The horizontal plate 10 is located directly below the third U-shaped plates 9, and a mounting plate 11 is installed between the horizontal plate 10 and the third U-shaped plates 9. A side plate 12 is installed on the mounting plate 11, and one end of the lifting frame 201 is rotatably mounted on the first rotating seat 4 through the side plate 12.

[0033] To further improve the overall strength and stability of the lifting frame 201, a fourth U-shaped plate 13 is installed on the side wall of the lifting frame 201 to reinforce its strength.

[0034] like Figure 3 , Figure 4 As shown, in some embodiments, in order to prevent items from falling and causing injury to the driver, a guard net 14 is installed on the three-point forklift frame 1. The guard net 14 is made of several thin steel bars welded to the three-point forklift frame 1.

[0035] In order to improve the timeliness and reliability of overload warning, prevent overload operation, and reduce safety hazards, in some embodiments, a pressure sensor 15 is provided on the front fork 202, and a buzzer 16 is installed on the side wall of the lifting frame 201. The pressure sensor 15 is electrically connected to the buzzer 16 through a controller (not shown in the figure) and a power supply (not shown in the figure).

[0036] The working process and beneficial effects of this utility model are as follows:

[0037] When transporting goods, the lifting mechanism 3 is activated first. The lifting mechanism 3 lifts the front fork carriage 202 and the goods on the front fork carriage 202 to a certain height on the lifting frame 201. Then, the first hydraulic cylinder 601 and the second hydraulic cylinder 602 are activated. The first hydraulic cylinder 601 and the second hydraulic cylinder 602 drive the lifting frame 201 to rotate at the front end of the three-point forklift frame 1, thereby adjusting the angle of the goods on the lifting frame 201 and the front fork carriage 202, improving the stability of the goods during transportation, and preventing the goods from being squeezed and impacted during handling. Moreover, by adjusting the angle of the front fork carriage 202, the forklift can be effectively operated on slopes or uneven surfaces, reducing the risk of the forklift overturning during transportation, and improving the safety of the whole vehicle and the overall work efficiency.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-point forklift with adjustable fork angle, comprising a three-point forklift frame (1) and forks (2) located at the front end of the three-point forklift frame (1), characterized in that: The fork (2) includes a lifting frame (201) and a front fork frame (202). The front fork frame (202) is slidably mounted on the lifting frame (201). The lifting frame (201) is equipped with a lifting mechanism (3) for vertically lifting the front fork frame (202). A first rotating seat (4) and a second rotating seat (5) are installed at the front end of the three-point forklift frame (1). There are two first rotating seats (4). One end of the lifting frame (201) is rotatably mounted on the first rotating seat (4). A drive assembly (6) for driving the fork (2) to adjust its angle is installed between the second rotating seat (5) and the other end of the lifting frame (201). The drive assembly (6) includes a first hydraulic cylinder (601) and a second hydraulic cylinder (602). One end of the first hydraulic cylinder (601) is rotatably mounted on a second rotating seat (5). The output end of the first hydraulic cylinder (601) is rotatably mounted on a lifting frame (201). The second hydraulic cylinder (602) is rotatably mounted on the second rotating seat (5) and located below the first hydraulic cylinder (601). The output end of the second hydraulic cylinder (602) is rotatably mounted on the lifting frame (201). The first hydraulic cylinder (601) and the second hydraulic cylinder (602) are triangularly distributed between the three-point forklift frame (1) and the forks (2).

2. The three-point forklift with adjustable front fork angle according to claim 1, characterized in that: A first U-shaped plate (7) and a second U-shaped plate (8) are installed on the side wall of the lifting frame (201), and the output ends of the first hydraulic cylinder (601) and the second hydraulic cylinder (602) are respectively installed on the first U-shaped plate (7) and the second U-shaped plate (8).

3. A three-point forklift with adjustable front fork angle according to claim 2, characterized in that: A third U-shaped plate (9) and a horizontal plate (10) are installed on the side wall of the lifting frame (201). The horizontal plate (10) is located directly below the third U-shaped plate (9), and an mounting plate (11) is installed between the horizontal plate (10) and the third U-shaped plate (9). A side plate (12) is installed on the mounting plate (11). One end of the lifting frame (201) is rotatably mounted on the first rotating seat (4) via the side plate (12).

4. A three-point forklift with adjustable front fork angle according to claim 3, characterized in that: A fourth U-shaped plate (13) for reinforcing the strength of the lifting frame (201) is also installed on the side wall of the lifting frame (201).

5. A three-point forklift with adjustable front fork angle according to claim 4, characterized in that: A baffle (14) is installed on the three-point forklift frame (1). The baffle (14) is made of several thin steel bars welded to the three-point forklift frame (1).

6. A three-point forklift with adjustable front fork angle according to claim 1, characterized in that: A pressure sensor (15) is provided on the front fork frame (202), and a buzzer (16) is installed on the side wall of the lifting frame (201). The pressure sensor (15) is electrically connected to the buzzer (16) through a controller and a power supply.

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