Adjustable pallet fork for forklift

By designing adjustable forks for forklifts and using a motor-driven reciprocating screw and hydraulic cylinder to achieve precise adjustment of the forks, the problem of instability in the placement of cargo on forklifts is solved, and handling efficiency and safety are improved.

CN223316363UActive Publication Date: 2025-09-09HEBEI LEICHAI INTERNAL COMBUSTION ENGINE CO LTD
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Patent Information

Application Number
CN202422726970.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-08
Publication Date
2025-09-09
Estimated Expiration
2034-11-08

AI Technical Summary

Technical Problem

It is difficult to accurately adjust the position of the forks during cargo handling, resulting in a high risk of cargo falling and vehicle rollover accidents. In addition, existing adjustable forks require high professionalism from the operator.

Method used

An adjustable fork for a forklift is designed, which includes a fixing mechanism, a lateral movement mechanism, a lifting mechanism and a sliding mechanism. The reciprocating screw and hydraulic cylinder driven by a motor realize the lateral movement, lifting and sliding of the fork, ensuring the precise placement of the fork at the specified position.

Benefits of technology

It improves the accuracy and safety of forklift cargo handling, reduces unnecessary forklift movements, reduces the risk of cargo damage and vehicle accidents, and improves operational flexibility and efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of pallet forks, and provides an adjustable pallet fork for a forklift, which is mounted on a forklift body, a cavity is arranged in the forklift body, the forklift body is provided with protective frames, the protective frame on one side is in an inclined rod type, and the protective frame on the other side is provided with an inclined rod. A supporting rod is fixedly arranged on the outer side wall of the side, facing the inclined rod type protection frame, of the forklift body, the forklift further comprises a pallet fork body, a fixing mechanism, a transverse moving mechanism, a lifting mechanism and a sliding mechanism, the fixing mechanism is arranged on the supporting rod, the transverse moving mechanism is arranged on the fixing mechanism, the lifting mechanism is arranged on the transverse moving mechanism, and the sliding mechanism is arranged on the pallet fork body. The transverse moving mechanism is used for driving the lifting mechanism to transversely move, and the pallet fork body is detachably arranged on the lifting mechanism. By means of the technical scheme, the problems that in the prior art, due to the fact that the position of a forklift is difficult to determine, the forklift moves too much, and goods fall and vehicle rollover accidents are caused are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of cargo forks, and in particular to an adjustable cargo fork for a forklift. Background Art

[0002] Adjustable forks are a device specifically designed to improve the operational flexibility of forklifts. Through an innovative mechanical structure, they achieve dynamic adjustment of angle, spacing or length, significantly enhancing the forklift's ability to handle cargo of various sizes and shapes. The core principle of this design is based on a hydraulic or electric drive system, combined with a sophisticated transmission mechanism, allowing operators to quickly and accurately adjust fork parameters during actual work to adapt to different operational requirements. Adjustable forks not only improve work efficiency, but also effectively reduce the risk of cargo damage, becoming a major innovation in the field of modern material handling.

[0003] If the forks are used in reverse, when lifting the goods, the force applied to the forks will change, and the forks may easily bend and break, causing the goods to fall. When a single fork is used to pick up goods, the weight of the goods borne by the single fork is twice that of the normal double forks, which may easily cause fatigue damage to the forks. In addition, the use of a single fork has the disadvantage of shifting the center of gravity of the goods, which may easily cause the forklift to run unstable and the goods to fall off. Some forklift operators are careless or have a weak sense of safety, and when adjusting the position of the forks, the distance between the forks and the left and right ends of the fork frame is asymmetrical, which may easily cause the center of gravity of the goods to be unstable during use, resulting in the goods falling and the vehicle overturning. When adjusting the distance between the forks, it is necessary to ensure that the distance between the forks and the end of the fork frame is equal and symmetrical, which places high requirements on the professionalism of the operator. Utility Model Content

[0004] The utility model provides an adjustable cargo fork for a forklift, which solves the problem in the related art that it is difficult to determine the position of the forklift, resulting in frequent movement of the forklift, causing cargo to fall and vehicle rollover accidents.

[0005] The technical solution of the utility model is as follows:

[0006] An adjustable fork for a forklift is mounted on a forklift body, wherein a cavity is formed inside the forklift body, the forklift body is provided with a protective frame, wherein the protective frame on one side is configured as an inclined rod type, and a support rod is fixedly provided on the outer side wall of the forklift body on the side of the protective frame facing the inclined rod type, and further comprising:

[0007] Fork body;

[0008] A fixing mechanism, the fixing mechanism being arranged on the support rod;

[0009] a transverse movement mechanism, the transverse movement mechanism being arranged on the fixing mechanism;

[0010] A lifting mechanism, wherein the lifting mechanism is arranged on the transverse moving mechanism, the transverse moving mechanism is used to drive the lifting mechanism to move transversely, the fork body is detachably arranged on the lifting mechanism, and the lifting mechanism is used to move the fork body;

[0011] A sliding mechanism is provided at the bottom of the lifting mechanism and is used for sliding the fork body.

[0012] Preferably, the fixing mechanism includes:

[0013] A fixing seat, the fixing seat being fixedly arranged at the middle portion of the support rod;

[0014] The movable opening is provided on the outer side wall of the fixing seat away from the supporting rod.

[0015] Preferably, the lateral movement mechanism includes:

[0016] a motor, the motor being fixedly mounted at one end of the moving opening, with an output end of the motor facing into the moving opening;

[0017] A reciprocating screw, the reciprocating screw being fixedly connected to an output end of the motor;

[0018] A movable seat, the movable seat being slidably connected to the reciprocating screw;

[0019] A fixed block, the fixed block being fixedly connected to an end of the moving port away from the motor;

[0020] A connecting rod is fixedly connected to the moving seat.

[0021] Preferably, the lifting mechanism includes:

[0022] A hydraulic cylinder, the hydraulic cylinder being fixedly connected to an end of the connecting rod away from the moving seat;

[0023] A lifting rod is fixedly connected to the output end of the hydraulic cylinder, and the fork body is detachably connected to the other end of the lifting rod.

[0024] Preferably, the sliding mechanism includes:

[0025] A sliding seat, the sliding seat being fixedly connected to the bottom of the fixed seat;

[0026] A sliding area is provided in the middle of the top of the sliding seat, and the hydraulic cylinder is slidably connected to the sliding area.

[0027] Preferably, a limiting plate is fixedly connected to one end of the sliding area away from the fixing seat.

[0028] Preferably, the fork body is configured as an L-shaped structure.

[0029] Preferably, the height of the movable seat is greater than that of the movable opening.

[0030] Preferably, one end of the fork body away from the hydraulic cylinder is rotatably connected to a baffle having an arc-shaped surface.

[0031] Preferably, a placement area is provided between the hydraulic cylinder and the top of the lifting rod.

[0032] The working principle and beneficial effects of the utility model are as follows:

[0033] In the present invention, when using a forklift to transport goods, the motor is first started to drive the reciprocating screw to rotate, and the moving seat on the reciprocating screw will move laterally as needed. When it moves to the specified direction, the motor is turned off, the hydraulic cylinder is started, and the lifting rod is first lowered to the bottom end to allow the fork body to load the material. The protective plate and baffle on the loaded fork body are rotated to the direction of the material and fixed. Then the forklift is started to move the fork body to the specified location through the forklift, the lifting rod is raised to raise the fork, and the hydraulic cylinder is made to slide in the direction of the limiting plate so that it can be accurately placed in the specified position, and the protective plate and baffle are rotated open for boring placement. Compared with the existing technology, the fork body that can automatically move laterally, forward and backward, and lift can place the material in the specified position more accurately, reduce unnecessary forklift movement, improve the overall handling efficiency, and thus increase the flexibility of the forklift. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0036] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0037] Figure 3 This is a schematic diagram of the structure of the fixed seat and the reciprocating screw in the utility model;

[0038] Figure 4 This is a schematic diagram of the structure of the cooperation between the hydraulic cylinder and the sliding seat of the utility model.

[0039] In the figure: 1. Forklift body; 2. Support rod; 3. Protective frame; 4. Diagonal rod type; 5. Protective plate; 6. Fork body; 7. Limit plate; 8. Silicone pad; 9. Baffle; 10. Protective plate; 11. Arc surface; 101. Fixed seat; 102. Moving port; 201. Motor; 202. Reciprocating screw; 203. Moving seat; 204. Fixed block; 205. Connecting rod; 301. Hydraulic cylinder; 302. Lifting rod; 401. Sliding seat; 402. Sliding area. DETAILED DESCRIPTION

[0040] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] like Figures 1 to 4 As shown, this embodiment proposes an adjustable fork for a forklift, which is installed on a forklift body 1, wherein a cavity is opened inside the forklift body 1, and the forklift body 1 is provided with a protective frame 3, wherein the protective frame 3 on one side is configured as an inclined rod type 4, and a support rod 2 is fixedly provided on the outer side wall of the forklift body 1 on the side of the protective frame 3 facing the inclined rod type 4, and further comprises a fork body 6, a fixing mechanism, a transverse moving mechanism, a lifting mechanism and a sliding mechanism, wherein the fixing mechanism is arranged on the support rod 2, the transverse moving mechanism is arranged on the fixing mechanism, the lifting mechanism is arranged on the transverse moving mechanism, the transverse moving mechanism is used to drive the lifting mechanism to move transversely, the fork body 6 is detachably arranged on the lifting mechanism, the lifting mechanism is used to make the fork body 6, the sliding mechanism is arranged at the bottom of the lifting mechanism, and is used to slide the fork body 6, wherein the fork body The body 6 is set to an L-shaped structure. In order to increase the force-bearing area of ​​the fork body 6, increase the stability of the structure, and make the fork body 6 withstand higher lateral forces, the end of the fork body 6 away from the hydraulic cylinder 301 is rotatably connected to a baffle 9 with an arc-shaped surface 11, and the outer walls on both sides of the fork body 6 are rotatably connected to protective plates 10. The functions of the baffle 9 and the protective plate 10 are mainly to prevent the goods from falling outside when following the forklift, causing safety accidents and damage to the goods, and the arc-shaped surface 11 is to prevent the goods from being damaged by the fork body 6, ensuring the overall integrity of the goods. The protective frame 3 is detachably installed with a protective plate 5 of transparent material on one end facing the forklift body 1. The use of the transparent protective plate 5 allows the operator and surrounding personnel to clearly see the situation around the forklift, reducing blind spots, thereby improving work safety.

[0042] In this embodiment, the fixing mechanism includes a fixing seat 101 and a movable opening 102 . The fixing seat 101 is fixedly arranged in the middle of the support rod 2 , and the movable opening 102 is opened on the outer wall of the fixing seat 101 away from the support rod 2 .

[0043] In this embodiment, the transverse movement mechanism includes a motor 201, a reciprocating screw 202, a moving seat 203, a fixed block 204 and a connecting rod 205. The motor 201 is fixedly installed at one end of the moving port 102, and the output end of the motor 201 faces the moving port 102. The reciprocating screw 202 is fixedly connected to the output end of the motor 201. The moving seat 203 is slidably connected to the reciprocating screw 202. The fixed block 204 is fixedly connected to the end of the moving port 102 away from the motor 201. The connecting rod 205 is fixedly connected to the moving seat 203. The height of the moving seat 203 is greater than the moving port 102, mainly to facilitate the moving seat 203 to have a limited range during operation, to avoid the moving seat 203 exceeding the moving port 102 when sliding, and to increase the stability of the moving seat 203 when driving the fixed block 204 to slide.

[0044] In this embodiment, the lifting mechanism includes a hydraulic cylinder 301 and a lifting rod 302. The hydraulic cylinder 301 is fixedly connected to the end of the connecting rod 205 away from the moving seat 203. The lifting rod 302 is fixedly connected to the output end of the hydraulic cylinder 301, and the fork body 6 is detachably connected to the other end of the lifting rod 302. A placement area is provided between the hydraulic cylinder 301 and the top of the lifting rod 302, mainly to prevent the fork body 6 on the lifting rod 302 from colliding with the hydraulic cylinder 301 when the hydraulic cylinder 301 is operating normally, thereby reducing the falling of goods due to the collision.

[0045] In this embodiment, the sliding mechanism includes a sliding seat 401 and a sliding area 402. The sliding seat 401 is fixedly connected to the bottom of the fixed seat 101, the sliding area 402 is opened in the middle of the top of the sliding seat 401, and the hydraulic cylinder 301 is slidably connected to the sliding area 402, wherein the sliding area 402 is fixedly connected to the end away from the fixed seat 101 with a limiting plate 7, mainly to limit the sliding range of the hydraulic cylinder 301, to avoid directly sliding out of the sliding area 402, causing damage to the mechanical equipment, and the sliding seat 401 is detachably connected to the end facing the fixed seat 101 with a silicone pad 8, mainly to prevent the bottom of the fork body 6 on the lifting rod 302 from excessively impacting the sliding seat 401, thereby reducing the impact of the fork body 6 on the sliding seat 401 and avoiding mechanical equipment failure.

[0046] When the forklift is used to transport materials, the position of the goods is first determined, the staff sits on the forklift and starts the forklift, first starts the motor 201, and the reciprocating screw 202 is driven by the motor 201 to rotate, so that the moving seat 203 on the reciprocating screw 202 moves horizontally. When it moves to the designated position, the motor 201 is turned off, the hydraulic cylinder 301 is started, and the lifting rod 302 is lowered to the lowest position to start loading the goods. After the goods are loaded, the protective plate 10 and the baffle 9 on the fork body 6 are rotated open to protect the goods and prevent the goods from falling during transportation. The forklift is started to go to the designated position, the lifting rod 302 is raised, the fork body 6 is raised to the designated position, the hydraulic cylinder 301 is slid toward the limit plate 7 of the sliding seat 401, slides to the designated position, and the protective plate 10 and the baffle 9 are rotated open to place the goods at the designated position. The handling of this cargo is completed, and the next cargo handling is carried out.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable fork for a forklift, mounted on a forklift body (1), wherein a cavity is provided inside the forklift body (1), and the forklift body (1) is provided with a protective frame (3), wherein the protective frame (3) on one side is provided as an inclined rod type (4), and a support rod (2) is fixedly provided on the outer side wall of the forklift body (1) on the side of the protective frame (3) facing the inclined rod type (4), characterized in that: Also includes: Fork body (6); A fixing mechanism, the fixing mechanism being arranged on the support rod (2); a transverse movement mechanism, the transverse movement mechanism being arranged on the fixing mechanism; A lifting mechanism, the lifting mechanism is arranged on the transverse moving mechanism, the transverse moving mechanism is used to drive the lifting mechanism to move transversely, the fork body (6) is detachably arranged on the lifting mechanism, and the lifting mechanism is used to drive the fork body (6); A sliding mechanism is provided at the bottom of the lifting mechanism and is used for sliding the fork body (6).

2. The adjustable fork for a forklift according to claim 1, characterized in that: The fixing mechanism comprises: A fixing seat (101), the fixing seat (101) being fixedly arranged at the middle portion of the support rod (2); A movable opening (102), the movable opening (102) being provided on an outer side wall of the fixing seat (101) away from the support rod (2).

3. The adjustable fork for a forklift according to claim 2, characterized in that: The lateral movement mechanism comprises: a motor (201), the motor (201) being fixedly mounted at one end of the moving opening (102), and the output end of the motor (201) facing the inside of the moving opening (102); a reciprocating screw (202), the reciprocating screw (202) being fixedly connected to an output end of the motor (201); A movable seat (203), the movable seat (203) being slidably connected to the reciprocating screw (202); a fixed block (204), the fixed block (204) being fixedly connected to an end of the moving port (102) away from the motor (201); A connecting rod (205), wherein the connecting rod (205) is fixedly connected to the movable seat (203).

4. The adjustable fork for a forklift according to claim 3, characterized in that: The lifting mechanism comprises: A hydraulic cylinder (301), the hydraulic cylinder (301) being fixedly connected to an end of the connecting rod (205) away from the movable seat (203); A lifting rod (302) is fixedly connected to the output end of the hydraulic cylinder (301), and the fork body (6) is detachably connected to the other end of the lifting rod (302).

5. The adjustable fork for a forklift according to claim 4, characterized in that: The sliding mechanism comprises: A sliding seat (401), the sliding seat (401) is fixedly connected to the bottom of the fixed seat (101); A sliding area (402) is provided in the middle of the top of the sliding seat (401), and the hydraulic cylinder (301) is slidably connected to the sliding area (402).

6. The adjustable fork for a forklift according to claim 5, characterized in that: One end of the sliding area (402) away from the fixing seat (101) is fixedly connected to a limiting plate (7).

7. The adjustable fork for a forklift according to claim 6, characterized in that: The fork body (6) is configured as an L-shaped structure.

8. The adjustable fork for a forklift according to claim 7, characterized in that: The height of the movable seat (203) is greater than that of the movable opening (102).

9. The adjustable fork for a forklift according to claim 8, characterized in that: One end of the fork body (6) away from the hydraulic cylinder (301) is rotatably connected to a baffle (9) having an arc-shaped surface (11).

10. The adjustable fork for a forklift according to claim 9, characterized in that: A placement area is provided between the hydraulic cylinder (301) and the top of the lifting rod (302).