Forklift with anti-toppling protection function

Abstract

The utility model relates to the technical field of forklifts, and discloses a forklift with an anti-toppling protection function, which comprises a vertical frame, a main control box fixedly mounted at the inner bottom of the vertical frame, a hydraulic oil cylinder fixedly mounted at the inner bottom of the vertical frame at the front side of the main control box, and a pallet fork movably mounted at the front side of the vertical frame, the rear side of the pallet fork is fixedly connected with the piston end of the hydraulic oil cylinder, first supporting beams are fixedly installed on the two sides of the vertical frame, and first auxiliary wheel bins are fixedly installed on the front sides of the first supporting beams. Second supporting beams are movably installed in the two first supporting beams respectively, sliding blocks are fixedly installed on the tops of the second supporting beams, meanwhile, the horizontal positions of the second supporting beams can be adjusted in cooperation with hydraulic motors and lead screws on the tops of the first supporting beams, and therefore the second auxiliary wheel bins and a plurality of balancing weights on the tops of the second supporting beams are matched. The gravity center of the whole forklift can be rapidly adjusted by adjusting the positions of the two sets of second auxiliary wheel bins and the balancing weights on the tops of the second supporting beams when the forklift inclines forwards.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to a forklift with anti-tipping protection function. Background Technology

[0002] Forklifts are typically equipped with forks or other attachments, enabling them to easily lift heavy objects from the ground to a certain height and move quickly over short distances, facilitating rapid transfer and stacking of goods. They are powered by a variety of sources, including internal combustion engines and electric motors, to meet the needs of different working environments.

[0003] For example, the Chinese utility model patent with publication number CN214399667U discloses a hand-push type liftable electric forklift. This application includes an electric forklift body and a stacking fork. The stacking fork is provided on one side of the electric forklift body, and a base is provided on the bottom surface of the electric forklift body. One end of the stacking fork is provided with a fork head, and the fork head and the top surface of the stacking fork are provided with a top groove. When lifting and transferring goods using this application, similar to traditional hand-push hydraulic forklifts, uneven weight distribution of goods may cause the forklift's center of gravity to shift forward, increasing the risk of tipping forward. In particular, when the center of gravity of the goods is too far forward, or the goods are improperly placed on the forks, it will be difficult for the forklift to maintain balance during lifting. As a result, during transportation, uneven road surfaces may cause the center of gravity of the hydraulic forklift to shift momentarily, leading to the hydraulic forklift tipping over. Utility Model Content

[0004] The purpose of this invention is to provide a forklift with anti-tipping protection function, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A forklift with anti-tipping protection function includes a frame, a main control box fixedly installed at the bottom of the frame, a hydraulic cylinder fixedly installed at the bottom of the frame located in front of the main control box, forks movably installed on the front side of the frame, and the rear side of the forks fixedly connected to the piston end of the hydraulic cylinder, first support beams fixedly installed on both sides of the frame, a first auxiliary wheel compartment fixedly installed on the front side of the first support beam, a second support beam movably installed inside the first support beam, a second auxiliary wheel compartment fixedly installed on the rear side of the second support beam, a base fixedly installed on the second auxiliary wheel compartment and the second support beam, and a counterweight cover movably installed on the base.

[0007] As a further preferred embodiment of this utility model, a reinforcing plate is fixedly installed on the top of the first support beam, and side plates are fixedly installed on both sides of the reinforcing plate. A sliding groove is provided on the top of the first support beam located inside the reinforcing plate.

[0008] As a further preferred embodiment of this utility model, a hydraulic motor is fixedly installed between the two side plates. The hydraulic motor is connected to the main control box through a pipe. A lead screw is fixedly installed at the output end of the hydraulic motor, and the end of the lead screw away from the hydraulic motor is rotatably installed inside the reinforcing plate.

[0009] Based on this, a hydraulic motor is installed on the first support beam, and a lead screw is installed at the output end of the hydraulic motor to facilitate the horizontal movement of the second support beam.

[0010] As a further preferred embodiment of this utility model, a slider is fixedly installed on the top of the second support beam, and a screw hole is opened in the slider. A pressure plate is fixedly installed on the top and bottom of the second support beam. Multiple balls are rotatably installed between the pressure plate and the second support beam, and the outer side of the balls also passes through the second support beam and is rolled on the inner side of the first support beam. The slider is slidably installed in the groove on the top of the first support beam and is threaded to the lead screw through the screw hole.

[0011] Based on this, with the help of a hydraulic motor and a lead screw, the slider can be driven to move horizontally, so that the second support beam can move smoothly within the first support beam by means of multiple balls.

[0012] As a further preferred embodiment of this utility model, an L-shaped hook plate is fixedly installed on one side of the top of the second support beam.

[0013] As a further preferred embodiment of this utility model, an inspection slot is provided on one side of the counterweight cover, the counterweight cover is fixedly installed on the counterweight cover by bolts, and one side of the L-shaped hook plate is clamped in the bottom of the inspection slot. Multiple counterweight blocks are interspersed on the base located inside the counterweight cover.

[0014] Based on this, the position of the counterweight can be adjusted via the second support beam.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, a second support beam is movably installed inside each of the two first support beams, and a slider is fixedly installed on the top of the second support beam. At the same time, the horizontal position of the second support beam can be adjusted by the hydraulic motor and lead screw on the top of the first support beam. In conjunction with the second auxiliary wheel compartment and the multiple counterweights on the top of the second support beam, the positions of the two sets of second auxiliary wheel compartments and the counterweights on the top of the second support beam can be adjusted when the forklift tilts forward, thereby quickly adjusting the center of gravity of the entire forklift, thus adjusting the balance of the forklift and preventing it from tipping over. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first and second support beams of this utility model;

[0019] Figure 3 This is a schematic diagram of the first support beam structure of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a sectional view of the second support beam, the second auxiliary wheel compartment, and the counterweight cover of this utility model;

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0023] In the diagram: 1. Frame; 2. Main control box; 3. Hydraulic cylinder; 4. Forks; 5. First support beam; 6. First auxiliary wheel compartment; 7. Second auxiliary wheel compartment; 8. Second support beam; 9. Counterweight cover; 10. Counterweight block; 11. Reinforcing plate; 12. Side plate; 13. Hydraulic motor; 14. Lead screw; 15. Pressure plate; 16. Ball bearing; 17. Slider; 18. Screw hole; 19. Base; 20. Inspection slot; 21. L-shaped hook plate. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-6 As shown, the present invention provides a forklift with anti-tipping protection function, including a frame 1, a main control box 2 fixedly installed at the bottom inside the frame 1, a hydraulic cylinder 3 fixedly installed at the bottom inside the frame 1 located in front of the main control box 2, a fork 4 movably installed at the front of the frame 1, and the rear side of the fork 4 is fixedly connected to the piston end of the hydraulic cylinder 3, a first support beam 5 fixedly installed on both sides of the frame 1, a first auxiliary wheel compartment 6 fixedly installed at the front of the first support beam 5, a second support beam 8 movably installed inside the first support beam 5, a second auxiliary wheel compartment 7 fixedly installed at the rear of the second support beam 8, a base 19 fixedly installed on the second auxiliary wheel compartment 7 and the second support beam 8, and a counterweight cover 9 movably installed on the base 19.

[0026] like Figures 2-5As shown, a reinforcing plate 11 is fixedly installed on the top of the first support beam 5, and side plates 12 are fixedly installed on both sides of the reinforcing plate 11. A sliding groove is opened on the top of the first support beam 5 located inside the reinforcing plate 11. A hydraulic motor 13 is fixedly installed between the two side plates 12. The hydraulic motor 13 is connected to the main control box 2 through a pipe. A lead screw 14 is fixedly installed on the output end of the hydraulic motor 13, and the end of the lead screw 14 away from the hydraulic motor 13 is rotatably installed on the inner side of the reinforcing plate 11. The installation of the hydraulic motor 13 on the first support beam 5 and the installation of the lead screw 14 at the output end of the hydraulic motor 13 facilitates the horizontal movement of the second support beam 8. A slider 17 is fixedly installed on the top of the second support beam 8. A screw hole 18 is opened in the slider 17. A pressure plate 15 is fixedly installed on the top and bottom of the second support beam 8. Multiple balls 16 are rotatably installed between the pressure plate 15 and the second support beam 8. The outer side of the balls 16 also passes through the second support beam 8 and rolls inside the first support beam 5. The slider 17 is slidably installed in the groove at the top of the first support beam 5 and is threaded to the lead screw 14 through the screw hole 18. With the cooperation of the hydraulic motor 13 and the lead screw 14, the slider 17 can be driven to move horizontally, so that the second support beam 8 can move smoothly in the first support beam 5 with the help of multiple balls 16.

[0027] like Figures 5-6 As shown, an L-shaped hook plate 21 is fixedly installed on one side of the top of the second support beam 8, and an inspection slot 20 is provided on one side of the counterweight cover 9. The counterweight cover 9 is fixedly installed on the counterweight cover 9 by bolts, and one side of the L-shaped hook plate 21 is clamped in the bottom of the inspection slot 20. Multiple counterweight blocks 10 are inserted and installed on the base 19 located inside the counterweight cover 9. The position of the counterweight blocks 10 can be adjusted by the second support beam 8.

[0028] It should be noted that this utility model is a forklift with anti-tipping protection function. When lifting and transporting a pallet loaded with goods through the hydraulic cylinder 3 and forks 4, if the counterweight of the forklift shifts, the hydraulic motor 13 can be quickly started through the main control box 2. The output end of the hydraulic motor 13 drives the lead screw 14 to rotate. The lead screw 14 rotates in the reinforcing plate 11 and simultaneously rotates in the screw hole 18 in the slider 17. This causes the screw hole 18 to move horizontally in the groove at the top of the first support beam 5. The slider 17 then drives the second support beam 8 to move horizontally within the first support beam 5 through multiple balls 16 at the top and bottom. This causes the second support beam 8 to move the second auxiliary wheel compartment 7 synchronously. The second auxiliary wheel compartment 7 uses its internal rollers for support, which can stably adjust the position of the counterweight cover 9 and multiple counterweight blocks 10. This uses the principle of leverage to quickly prevent the forklift from tilting forward, thus preventing the forklift from tipping over.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A forklift with anti-tipping protection function, characterized in that: The system includes a stand (1), a main control box (2) is fixedly installed at the bottom inside the stand (1), a hydraulic cylinder (3) is fixedly installed at the bottom inside the stand (1) located in front of the main control box (2), a fork (4) is movably installed on the front side of the stand (1), and the rear side of the fork (4) is fixedly connected to the piston end of the hydraulic cylinder (3). A first support beam (5) is fixedly installed on both sides of the stand (1), a first auxiliary wheel compartment (6) is fixedly installed on the front side of the first support beam (5), a second support beam (8) is movably installed inside the first support beam (5), a second auxiliary wheel compartment (7) is fixedly installed on the rear side of the second support beam (8), a base (19) is fixedly installed on the second auxiliary wheel compartment (7) and the second support beam (8), and a counterweight cover (9) is movably installed on the base (19).

2. A forklift with anti-tipping protection function according to claim 1, characterized in that: A reinforcing plate (11) is fixedly installed on the top of the first support beam (5), and side plates (12) are fixedly installed on both sides of the reinforcing plate (11). A groove is provided on the top of the first support beam (5) located inside the reinforcing plate (11).

3. A forklift with anti-tipping protection function according to claim 2, characterized in that: A hydraulic motor (13) is fixedly installed between the two side plates (12). The hydraulic motor (13) is connected to the main control box (2) through a pipe. A lead screw (14) is fixedly installed at the output end of the hydraulic motor (13), and the end of the lead screw (14) away from the hydraulic motor (13) is rotatably installed on one side of the reinforcing plate (11).

4. A forklift with anti-tipping protection function according to claim 3, characterized in that: A slider (17) is fixedly installed on the top of the second support beam (8). A screw hole (18) is opened in the slider (17). A pressure plate (15) is fixedly installed on the top and bottom of the second support beam (8). Multiple balls (16) are rotatably installed between the pressure plate (15) and the second support beam (8). The outer side of the balls (16) also passes through the second support beam (8) and is rolled on the inner side of the first support beam (5). The slider (17) is slidably installed in the groove on the top of the first support beam (5) and is threadedly connected to the lead screw (14) through the screw hole (18).

5. A forklift with anti-tipping protection function according to claim 1, characterized in that: An L-shaped hook plate (21) is fixedly installed on one side of the top of the second support beam (8).

6. A forklift with anti-tipping protection function according to claim 5, characterized in that: The counterweight cover (9) has an inspection slot (20) on one side. The counterweight cover (9) is fixedly installed on the counterweight cover (9) by bolts, and the L-shaped hook plate (21) is clamped in the bottom of the inspection slot (20) on one side. Multiple counterweight blocks (10) are interspersed on the base (19) located inside the counterweight cover (9).

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