Structure for realizing multi-angle rotation of fork of forklift
By designing a multi-angle rotating fork structure, the fork angle can be adjusted using the cooperation of bearings and toothed rings, and fixed by hydraulic cylinders and air bladders. This solves the problem of the adaptability and stability of the forks in different environments and reduces the risk of cargo slippage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU RUIPEIER TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-15
AI Technical Summary
Existing fork structures are not adaptable to different working environments, especially in narrow spaces and when goods are stacked at an angle, making them difficult to operate. Furthermore, the lack of effective limiting components leads to a high risk of goods slipping off.
Design a multi-angle rotating fork structure, which achieves fork angle adjustment through bearing and toothed ring cooperation, and is equipped with hydraulic cylinder assembly and airbag fixation, combined with limit block structure to achieve stable clamping of goods.
It enables flexible operation of the forks in various environments, adapts to different cargo shapes, reduces the risk of slippage, and improves transportation stability.
Smart Images
Figure CN224242649U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of forklift fork technology, and in particular to a structure that enables forklift forks to rotate at multiple angles. Background Technology
[0002] Forklifts are industrial handling vehicles used for loading, unloading, stacking, and short-distance transport of palletized goods.
[0003] Various wheeled handling vehicles are commonly used in the fields of transporting large objects in warehouses and transporting goods for equipment maintenance. They are usually powered by fuel engines or batteries. The forks are an important part of the forklift, which are used to lift and place the goods to be transported on the forks and move them by lifting.
[0004] Existing forks are generally mounted directly on the transport mast of a forklift for lifting and lowering. However, current forks are usually of a one-piece structure, with the forks perpendicular to the mast support, and the forks can only move up and down along the mast. This limits their applicability. Furthermore, when lifting large goods, due to their weight and volume, the forks are also relatively large, making it inconvenient to work in spaces with limited space, such as narrow cubicles. They are also not convenient for loading and unloading goods that are stacked at an angle. Existing forks cannot adapt to different working environments.
[0005] Furthermore, the existing fork structure is relatively simple and lacks proper limiting components. When the transportation route is bumpy or when transporting irregularly shaped goods such as cylindrical goods, the goods on the forks may slip and be lost.
[0006] Therefore, based on customer feedback regarding the shortcomings of the existing device, the inventors made further improvements to overcome the aforementioned problems. Utility Model Content
[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a structure that enables multi-angle rotation of forklift forks, adapts to various working environments, and stably clamps goods.
[0008] The purpose of this utility model is achieved through the following technical solution: a structure for realizing multi-angle rotation of forklift forks, including a mounting plate, a rotating component and a first fork section;
[0009] The mounting plate is fixedly connected to the first fork section. The first fork section includes a mounting frame with two L-shaped forks arranged opposite each other to pick up goods. The rotating component is connected to the mounting plate and is rotatably mounted on the bracket. Driving the rotating component to rotate can drive the mounting plate to rotate, thereby driving the first fork section to rotate synchronously. The rotating component includes a support column and a toothed ring. The support column is vertically mounted on the surface of the bracket and a bearing is sleeved on the support column. The outer ring surface of the bearing is fixedly connected to the mounting plate. The toothed ring is sleeved on the outside of the bearing and a main gear that meshes with the toothed ring is arranged beside the toothed ring.
[0010] During operation, the main gear is driven to rotate, causing the meshing gear ring to rotate, which in turn drives the outer ring surface of the bearing to rotate. As a result, the fixedly connected mounting plate and the first fork connected to the mounting plate rotate, allowing the L-shaped forks inside the mounting frame to rotate at a certain angle to adapt to various environments and to effectively and quickly pick up goods.
[0011] As a preferred technical solution of this application, the two L-shaped forks are slidably installed in the mounting frame, which are the left fork and the right fork respectively; the mounting frame is divided into two non-intersecting movable cavities, and the left lead screw and the right lead screw are respectively provided in the two movable cavities, and the left fork and the right fork are respectively sleeved on the left lead screw and the right lead screw, thereby driving the left and right forks to move left and right to adapt to goods of different sizes.
[0012] As a preferred technical solution of this application, the left lead screw and the right lead screw are rotatably arranged in the mounting frame. The ends of the left and right lead screws that protrude from the left and right sides of the mounting frame are respectively connected to a handle. By turning the handle, the lead screw is rotated, thereby causing the L-shaped fork to move left and right.
[0013] As a preferred technical solution of this application, a rotating column is fixedly inserted into the center of the main gear. The rotating column passes through the bracket and is connected to a motor A. The rotating column is driven to rotate by the motor A, thereby causing the main gear to rotate.
[0014] As a preferred technical solution of this application, hydraulic cylinder assemblies are respectively provided on both sides of the bottom of the bracket. The hydraulic rod of the hydraulic cylinder assembly extends upward and the end of the hydraulic cylinder assembly is vertically installed with a clamping fork. The clamping fork is opposite to the forklift arm of the L-shaped fork. Driving the hydraulic cylinder assembly causes the hydraulic rod to move up and down, so that the lower surface of the clamping fork is in close contact with the upper surface of the goods clamping fork.
[0015] As a preferred technical solution of this application, an air bladder is provided on the lower surface of the clamping fork. When the clamping fork moves up and down to press against the upper surface of the goods, the air bladder is inflated to fix the goods with irregular shapes.
[0016] As a preferred technical solution of this application, it also includes a limiting component; the limiting component includes a limiting block, a spring and a limiting groove; the limiting groove is opened on the upper surface of the forklift arm of the L-shaped fork, a spring is installed in the limiting groove, one end of the spring is connected to the bottom of the limiting groove and the other end is connected to the bottom end of the limiting block, the limiting block is an arc-shaped block and its arc surface is directly opposite the tip of the L-shaped fork.
[0017] This utility model has the following advantages:
[0018] (1) It can rotate at multiple angles to adapt to various working environments;
[0019] Currently, the forks are perpendicular to the mast support, and the forks can only move up and down along the mast, limiting their applicability. Furthermore, the forks themselves are relatively large, making them unsuitable for handling tasks in narrow spaces or when loading and unloading tilted goods. Existing forks are also inadequate for various working environments. Therefore, this solution utilizes the interaction of the main gear, gear ring, and bearings to rotate the first fork section, thereby changing the angle of the L-shaped forks. The L-shaped forks are adaptable to various environments and cargo placement methods for handling.
[0020] (2) It can stably clamp and secure goods;
[0021] This solution uses a clamping fork structure that can move up and down on the bracket, and an airbag structure on the clamping fork to fix some cylindrical goods. At the same time, a limit block structure is set on the forklift arm under the L-shaped fork. Through the cooperation between the spring and the limit block with an arc surface, when the goods are against the side arm of the L-shaped fork, the spring returns and the limit block is popped out, and its flat side abuts against the surface of the goods, further limiting the goods. Attached Figure Description
[0022] Figure 1 This is a first-view structural schematic diagram of the present invention;
[0023] Figure 2 This is a schematic diagram of the structure of this utility model from a side view.
[0024] Figure 3 This is a structural schematic diagram of the first fork section of this utility model from a first-view perspective;
[0025] Figure 4 This is a structural schematic diagram of the first fork section of this utility model from a side cross-sectional perspective;
[0026] Figure 5 This is a structural schematic diagram of the present invention from a half-section view perspective;
[0027] In the diagram: 1-Bracket, 2-Mounting plate, 3-Left lead screw, 4-Gear ring, 5-Outer ring surface, 6-Main gear, 7-Motor A, 8-L-shaped fork, 9-Mounting frame, 10-Handle, 11-Hydraulic cylinder assembly, 12-Pressure fork, 13-Airbag, 14-Limit block, 15-Spring. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0029] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this invention is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.
[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0031] Therefore, based on the above issues, please refer to Figure 1 This utility model proposes a structure to achieve multi-angle rotation of forklift forks to solve the problem.
[0032] See Figures 1-5 The present implementation scheme proposes a structure for realizing multi-angle rotation of forklift forks, including a bracket 1, a mounting plate 2, a rotating component, and a first fork section;
[0033] Among them, see Figure 1 and Figure 5 A rotating component is provided on the bracket 1. The rotating component is connected to the mounting plate 2 and can rotate on its own. The mounting plate 2 is connected to the first fork section. The first fork section includes a mounting frame 9 and an L-shaped fork 8. The L-shaped fork 8 is symmetrically arranged in the mounting frame 9 to pick up and move the goods to be transported.
[0034] Among them, see Figure 5 The rotating component includes a support column and a toothed ring 4. The support column is fixedly connected to the bracket 1 and is vertically mounted on the surface of the bracket 1. A bearing is sleeved on the support column. The bearing is a ball bearing and its outer ring surface 5 is fixedly connected to the mounting plate 2. At the same time, a toothed ring 4 is sleeved on the circumference of the outer ring surface 5 of the bearing. A main gear 6 is provided on the side of the toothed ring 4. The main gear 6 meshes with the toothed ring 4 and is rotatably mounted on the bracket 1.
[0035] When picking up goods, the main gear 6 rotates first, causing the meshing gear ring 4 to rotate, which in turn drives the outer ring surface 5 of the bearing to rotate. Since the outer ring surface 5 is fixedly connected to the mounting plate 2, the mounting plate 2 rotates synchronously, and the first fork part connected to the mounting plate 2 also rotates. Therefore, the angle of the L-shaped fork 8 is changed. The L-shaped fork 8 is adapted to various environments and the way goods are placed to pick up goods.
[0036] Currently, forks are basically fixedly mounted on the transport mast of the forklift, perpendicular to the mast, and can only move up and down along the length of the mast. When lifting large goods, due to their weight and volume, the forks are also correspondingly large, making it inconvenient to work in narrow spaces such as cramped areas. At the same time, it is also inconvenient to pick up and unload some tilted stacked goods. Therefore, this solution designs a structure that enables the forklift forks to rotate at multiple angles. Through the cooperation of bearings and meshing gear ring 4, the first fork part can rotate around the bearing axis, so that the L-shaped fork 8 can rotate at a certain angle to adapt to various environments and effectively and quickly pick up goods.
[0037] In this embodiment, see Figure 1 and Figure 5 For the rotating component, the rotating component consists of a support column, a bearing, a gear ring 4, and a main gear 6 meshing with the gear ring 4. The rotation of the bearing is achieved through the cooperation between the main gear 6 and the gear ring 4, thereby realizing the rotation of the L-shaped fork 8 in the first fork section. The support column is a cylinder and is perpendicularly connected to the surface (i.e., a plane) of the bracket 1. A bearing is fitted onto the free end of the support column. The bearing has an inner ring surface, balls, and an outer ring surface 5. This device rotatably connects the first fork section to the bracket 1 through the bearing. The outer ring surface 5 of the bearing is fixedly connected to a mounting plate 2. The mounting plate 2 is disc-shaped and is fixed to the outer ring surface 5 of the bearing by welding or bolting. At the same time, a tooth... Ring 4 is fitted onto the outer ring surface 5 of the bearing (i.e., fitted onto the cylindrical side of the outer ring surface 5). A main gear 6 is provided on the upper side of the gear ring 4, and the main gear 6 meshes with the gear ring 4. The main gear 6 is connected to a motor A7. When the drive motor A7 causes the main gear 6 to rotate, the meshing gear ring 4 rotates, which drives the outer ring surface 5 of the bearing to rotate (the bearing can prevent the device from being obstructed from rotating). Thus, the mounting plate 2, which is fixedly connected to the outer ring surface 5 of the bearing, and the first fork part connected to the mounting plate 2 can rotate. In addition, the motor A7 controls the forward and reverse rotation and speed of the main gear 6, so that the L-shaped fork 8 in the first fork part of the device has a range of rotation in both forward and reverse directions and at multiple angles, allowing for more flexible picking up of goods.
[0038] It should be noted that the back of bracket 1 is fixedly connected to the transport mast of the forklift, thereby installing the device on the forklift for picking up and removing goods.
[0039] In this embodiment, see Figure 1 and Figures 3-4 The first fork section includes a mounting frame 9, two L-shaped forks 8, and a screw structure. The screw structure consists of a left screw 3 and a right screw. The mounting frame 9 is a rectangular frame divided into two spaces, namely two non-intersecting movable cavities. The left screw 3 and the right screw are transversely inserted into the two movable cavities, and the two L-shaped forks 8 (i.e., the left fork and the right fork) are fitted onto the left screw 3 and the right screw. The left screw 3 and the right screw drive the left and right forks to move left and right, thereby adapting to the picking up of goods of different widths. In this solution, the left and right screws are rotatably set in their respective movable cavities, and the ends of the left screw 3 and the right screw protrude from the left and right sides of the mounting frame 9 and are respectively connected to a circular handle 10. By turning the handle 10, the screw is rotated, thereby driving the L-shaped forks 8 to move horizontally.
[0040] Furthermore, a hydraulic cylinder assembly 11 is also provided on the bracket 1; the upper part of the bracket 1 is equipped with a rotating part and a first fork part, and the lower part is equipped with a hydraulic cylinder assembly 11. Two hydraulic cylinder assemblies 11 are respectively fixedly installed on the mounting seats on the left and right sides of the lower part of the bracket 1. The hydraulic rod of the hydraulic cylinder assembly 11 extends upward, and the end of the hydraulic cylinder assembly 11 is vertically installed with a clamping fork 12. The shape of the clamping fork 12 is the same as the shape of the forklift arm of the L-shaped fork 8. When the hydraulic cylinder assembly 11 is driven to move the hydraulic rod in the up and down direction, the lower surface of the clamping fork 12 can be made to press against the goods.
[0041] It should be noted that the up-and-down movement of the clamping fork 12 does not interfere with the rotation of the first fork. When the first fork rotates and the L-shaped fork 8 is adjusted to a suitable angle, the clamping fork 12 moves upward under the control of the hydraulic cylinder assembly 11 to avoid interference such as collision with the rotating first fork.
[0042] Furthermore, an airbag 13 is installed on the lower surface of the clamping fork 12 (the airbag 13 covers the entire lower surface of the clamping fork 12). The air supply pipe of the airbag 13 is connected to the drive air source, which is located on the forklift (not shown in the attached diagram of this solution). By controlling the drive air source, the airbag 13 is inflated. When the clamping fork 12 moves up and down and the lower surface of the clamping fork 12 is pressed against the upper surface of the goods, the airbag 13 on the lower surface of the clamping fork 12 is inflated, thereby effectively fixing the irregularly shaped goods (such as cylindrical goods).
[0043] In this embodiment, see Figure 1 and Figure 4It also includes a limiting component; the limiting component includes a spring 15, a limiting block 14 connected to the spring 15, and a limiting groove for mounting the limiting block 14; a limiting groove is opened on the upper surface of the upper fork arm of the L-shaped fork 8, and a spring 15 is connected in the limiting groove. One end of the spring 15 is fixedly connected to the bottom of the limiting groove, and the other end is connected to the bottom end of the limiting block 14. The limiting block 14 is an arc-shaped block, one side of which is an arc surface and the opposite side of the arc surface is a plane (that is, the limiting block 14 is a quarter-circular plate). Its arc surface is set directly opposite the fork tip of the fork arm. When the fork arm picks up the goods, the goods move inward through the arc surface of the limiting block 14, and the spring 15 is compressed. At this time, the limiting block 14 is pressed into the limiting groove. When the goods are completely against the side arm of the L-shaped fork 8, the spring 15 returns to its original position, and the limiting block 14 is popped out. Its plane abuts against the surface of the goods, further limiting the goods and preventing them from slipping.
[0044] First, by rotating the handles 10 on both sides of the mounting frame 9, the L-shaped fork 8 is moved to adapt to the width of the cargo. Then, the drive motor A7 drives the main gear 6 to rotate, which in turn causes the meshing gear ring 4 to rotate, driving the outer ring surface 5 of the bearing to rotate. Since the outer ring surface 5 is fixedly connected to the mounting plate 2, the mounting plate 2 rotates synchronously, and the first fork part connected to the mounting plate 2 rotates. The L-shaped fork 8 rotates and tilts at a certain angle. After picking up the cargo, the cargo passes through the limiting block 14 and approaches the side arm of the L-shaped fork 8. At this time, the limiting block 14 abuts against the cargo, and at the same time, the pressing fork 12 moves up and down to fit against the upper surface of the cargo. At the same time, the air bag 13 is inflated to further secure the cargo.
[0045] Existing forklifts typically use a single, integrated forklift mounted directly on the mast for lifting and lowering. The forks are perpendicular to the mast and can only move vertically along the mast. When lifting large loads, the forks are correspondingly bulky due to their weight and size, making them unsuitable for operation in confined spaces. They also struggle to handle tilted or stacked loads effectively. Furthermore, the simple forklift structure lacks proper positioning components to secure loads during bumpy transport or when transporting irregularly shaped goods such as cylindrical items, making them prone to loss. To prevent slippage, this solution uses a ball bearing and a meshing gear ring 4 to enable the first fork to rotate around the bearing axis, allowing the L-shaped fork 8 to rotate at a certain angle for effective and rapid picking up of tilted goods. For limiting the movement of goods, this solution uses a vertically movable clamping fork 12 structure, an airbag 13 structure to fix cylindrical goods, and a limiting block 14 structure on the forklift arm below the L-shaped fork 8. The limiting block 14, which can extend and retract vertically using a spring 15, effectively clamps and limits the goods located on the arm.
[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A structure for realizing multi-angle rotation of forklift forks, characterized in that: Includes mounting plate (2), rotating parts, and first fork section; The mounting plate (2) is fixedly connected to the first fork section. The first fork section includes a mounting frame (9). Two L-shaped forks (8) are provided in the mounting frame (9) and are arranged opposite to each other, which can pick up goods. The rotating component is connected to the mounting plate (2) and is rotatably mounted on the bracket (1). Driving the rotating component to rotate can drive the mounting plate (2) to rotate, thereby driving the first fork section to rotate synchronously. The rotating component includes a support column and a toothed ring (4). The support column is vertically mounted on the surface of the bracket (1) and a bearing is sleeved on the support column. The outer ring surface (5) of the bearing is fixedly connected to the mounting plate (2). The toothed ring (4) is sleeved on the outside of the bearing and a main gear (6) that meshes with the toothed ring (4) is provided on the side of the toothed ring (4). When working, the main gear (6) is driven to rotate, causing the meshing gear ring (4) to rotate, thereby driving the outer ring surface (5) of the bearing to rotate. As a result, the fixedly connected mounting plate (2) and the first fork connected to the mounting plate (2) rotate. Therefore, the L-shaped fork (8) in the mounting frame (9) rotates at a certain angle to adapt to various environments and to effectively and quickly pick up goods.
2. The structure for realizing multi-angle rotation of forklift forks according to claim 1, characterized in that: The two L-shaped forks (8) can be installed in the mounting frame (9) in a horizontally movable manner, which are the left fork and the right fork respectively. The mounting frame (9) is divided into two non-intersecting movable cavities, and the left screw (3) and the right screw are respectively provided in the two movable cavities. The left fork and the right fork are respectively sleeved on the left screw (3) and the right screw. The left and right forks are driven to move left and right through the left screw (3) and the right screw to adapt to goods of different sizes.
3. The structure for realizing multi-angle rotation of forklift forks according to claim 2, characterized in that: The left lead screw (3) and the right lead screw are rotatably set in the mounting frame (9). The ends of the left and right lead screws that pass through the left and right sides of the mounting frame (9) are connected to a handle (10). By turning the handle (10), the lead screw is rotated, thereby causing the L-shaped fork (8) to move left and right.
4. The structure for realizing multi-angle rotation of forklift forks according to claim 1, characterized in that: A rotating column is fixedly inserted at the center of the main gear (6). The rotating column passes through the bracket (1) and is connected to a motor A (7). The rotating column is driven to rotate by the motor A (7), thereby causing the main gear (6) to rotate.
5. The structure for realizing multi-angle rotation of forklift forks according to claim 4, characterized in that: Hydraulic cylinder assemblies (11) are respectively installed on both sides of the bottom of the bracket (1). The hydraulic rod of the hydraulic cylinder assembly (11) extends upward and the end of the hydraulic cylinder assembly (11) is vertically installed with a clamping fork (12). The clamping fork (12) is opposite to the forklift arm of the L-shaped fork (8). The hydraulic cylinder assembly (11) is driven to move the hydraulic rod up and down, so that the lower surface of the clamping fork (12) is in close contact with the goods.
6. The structure for realizing multi-angle rotation of forklift forks according to claim 5, characterized in that: An air bladder (13) is provided on the lower surface of the clamping fork (12). When the clamping fork (12) moves up and down and presses against the upper surface of the goods, the air bladder (13) is inflated to fix the goods with irregular shapes.
7. The structure for realizing multi-angle rotation of forklift forks according to claim 1, characterized in that: It also includes a limiting component; the limiting component includes a limiting block (14), a spring (15) and a limiting groove; the limiting groove is opened on the upper surface of the forklift arm of the L-shaped fork (8), and a spring (15) is set in the limiting groove. One end of the spring (15) is connected to the bottom of the limiting groove, and the other end is connected to the bottom end of the limiting block (14). The limiting block (14) is an arc-shaped block, and its arc surface is directly opposite the tip of the L-shaped fork (8).