Front fork assembly of warehouse logistics transport vehicle

Abstract

A limiting plate and a bearing plate are connected to a vertical rail in a sliding mode, the bearing plate is connected with a rotating disc through a fulcrum shaft, a rack rail on the side wall of the rotating disc is meshed with a motor gear to achieve 0-180-degree rotation, and a fork frame is driven to switch the transverse posture or the longitudinal posture. The fork frame front end extension frame is in sliding connection with the fork frame through a guide groove and a guide clamping key and is driven by a linear telescopic rod to stretch out and draw back, and the feeding amount is adjusted. Annular positioning protruding keys on the end face of the rotary disc are matched with positioning grooves of the bearing plate and the limiting plate, and rolling wheels are used for assisting to guarantee stable rotation. The extending frame is provided with anti-skid lines, and the guide grooves and the clamping keys are of trapezoidal structures. According to the assembly, the angle and position of the fork frame can be flexibly adjusted in a narrow space without adjusting a forklift, for example, goods can be accurately forked and placed in a narrow area between two frames, and the warehouse logistics transportation operation efficiency and flexibility are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of warehousing and logistics equipment, and particularly to a front fork assembly of a warehousing and logistics transport vehicle. Background Art

[0002] In warehousing and logistics transportation operations, as a commonly used cargo handling equipment, the performance of the front fork assembly of a forklift has an important impact on operation efficiency and flexibility. The existing ordinary fork frames are usually directly installed in front of the forklift. When handling goods, the direction of the fork frame is mainly controlled by the overall movement and steering of the forklift. However, in actual warehousing environments, there are often complex operation scenarios such as narrow spaces between two shelves. When the forklift drives into such a narrow space, due to space limitations, the forklift body cannot perform steering operations, but the goods need to be accurately placed on the shelf. At this time, the traditional front fork assembly cannot meet the requirement of flexibly adjusting the fork frame without adjusting the overall position of the forklift, resulting in low cargo handling efficiency and even the inability to complete the handling task, seriously affecting the normal progress of warehousing and logistics operations. Therefore, there is an urgent need for a front fork assembly of a warehousing and logistics transport vehicle that can be flexibly adjusted in a small space. Summary of the Invention

[0003] To solve the technical problems in the background art, the present invention proposes a front fork assembly of a warehousing and logistics transport vehicle.

[0004] The front fork assembly of a warehousing and logistics transport vehicle proposed by the present invention includes a vertical rail. A limiting plate and a bearing plate are vertically slidably connected to the vertical rail in sequence from top to bottom. A support shaft is vertically installed in the middle of the bearing plate. A turntable is provided between the bearing plate and the limiting plate. A through hole adapted to the outer diameter of the support shaft is opened at the center of the turntable. The support shaft passes through the through hole and forms a rotational fit with the inner wall of the through hole. The upper and lower end faces of the turntable are respectively in surface contact with the upper surface of the bearing plate and the lower surface of the limiting plate, enabling the turntable to rotate around the support shaft. A tooth rail structure distributed in a semi-circular shape is provided on the side wall of the turntable close to the vertical rail. A motor is installed on the bearing plate. A gear is installed on the output shaft of the motor. The gear meshes with the tooth rail. Two groups of parallel fork frames are connected to the side of the turntable away from the vertical rail. The front ends of the two groups of fork frames are both slidably connected with extension frames.

[0005] Preferably, a plurality of groups of equally spaced and parallel guiding grooves are axially formed on the upper surface of the fork frame. A plurality of groups of guiding keys are correspondingly arranged on the lower surface of the extension frame. The guiding keys and the guiding grooves correspond one by one and form a sliding pair connection, enabling the extension frame to perform telescopic movement along the axial direction of the fork frame. The tails of the two groups of extension frames are rigidly connected through a connecting frame. A linear telescopic rod is installed at the central position of the end of the turntable away from the vertical rail. Its telescopic direction is the same as the sliding direction of the extension frame, and the output end of the linear telescopic rod is fixedly connected to the connecting frame.

[0006] Preferably, the upper and lower end faces of the turntable are provided with multiple groups of annular positioning cams distributed in concentric circles, and the corresponding positions of the upper surface of the supporting plate and the lower surface of the limit plate are respectively provided with positioning grooves adapted to the annular positioning cams, and the annular positioning cams and the positioning grooves adopt a cam-groove interlocking structure.

[0007] Preferably, the cross-sections of the guide groove and the guide key are both trapezoidal in structure, and the hypotenuse angle of the trapezoidal cross-section is 5°-15°.

[0008] Preferably, the upper surfaces of the two groups of extension frames are provided with anti-slip grooves.

[0009] Preferably, multiple groups of rollers are installed on the inner walls on both sides of each group of positioning grooves.

[0010] The present invention provides a front fork assembly for a warehousing and logistics transport vehicle, which has the following technical effects:

[0011] Flexible Angle Adjustment: The motor-driven gear meshes with the rack on the turntable, precisely controlling the turntable to rotate the fork frame around the pivot axis. The rotation angle range is 0° to 180°, allowing for easy transitions between horizontal and vertical forking positions. In confined spaces, the fork frame can be adjusted for precise loading and unloading without moving the forklift, significantly improving operational flexibility in complex environments.

[0012] Variable feed rate: The extension frame at the front end of the fork is connected to the sliding pair of the guide key through a guide groove. Driven by a linear telescopic rod, it can move telescopically along the axial direction of the fork frame. This allows the front fork assembly to flexibly adjust the extension length of the fork frame according to the size and position of the cargo, facilitating the handling of cargo at different distances and spatial locations, further improving the applicability and operating efficiency of the front fork assembly.

[0013] Stable Structural Design: The interlocking structure of the annular positioning key and positioning groove, along with the rollers, between the turntable, the load-bearing plate, and the limit plate ensures stable and smooth rotation, reducing friction and shaking during rotation and improving the overall structural strength and reliability of the front fork assembly. Furthermore, the anti-slip grooves on the top surface of the extension frame and the trapezoidal cross-section of the guide grooves and guide keys further enhance the stability and load-bearing capacity of the extension frame during extension and retraction, ensuring safe and reliable cargo handling.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1Schematic structural diagram of the present invention;

[0016] Figure 2 Schematic internal structure diagram of the present invention;

[0017] Figure 3 Schematic structural diagram of the annular positioning convex key in the present invention;

[0018] Figure 4 Schematic structural diagram of the positioning groove in the present invention;

[0019] Description of the reference numerals in the figure: 1, vertical rail; 101, bearing plate; 102, support shaft; 103, limit plate; 2, turntable; 201, tooth rail; 202, annular positioning convex key; 203, positioning groove; 204, roller; 3, gear; 4, fork; 401, guide groove; 402, extension frame; 5, connecting frame; 501, telescopic rod. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0021] As Figures 1 - 4 shown, a front fork assembly of a warehousing and logistics transport vehicle includes a vertical rail 1. A limit plate 103 and a bearing plate 101 are vertically slidably connected to the vertical rail 1 in sequence from top to bottom. A support shaft 102 is vertically installed in the middle of the bearing plate 101. A turntable 2 is provided between the bearing plate 101 and the limit plate 103. A through hole adapted to the outer diameter of the support shaft 102 is opened at the center of the turntable 2. The support shaft 102 penetrates through the through hole and forms a rotational fit with the inner wall of the through hole. The upper and lower end faces of the turntable 2 respectively form surface contact fits with the upper surface of the bearing plate 101 and the lower surface of the limit plate 103, so that the turntable 2 can rotate around the support shaft 102. A tooth rail 201 structure distributed in a semi-circular shape is provided on the side wall of the turntable 2 close to the vertical rail 1. A motor is installed on the bearing plate 101, and a gear 3 is installed on the output shaft of the motor. The gear 3 meshes with the tooth rail 201. Two groups of parallel fork frames 4 are connected to the side of the turntable 2 away from the vertical rail 1. Extension frames 402 are slidably connected to the front ends of the two groups of fork frames 4.

[0022] Further, a plurality of groups of guiding grooves 401 which are equally spaced and parallel to each other are formed in the axial direction on the upper surface of the fork support 4. A plurality of groups of guiding keys are correspondingly arranged on the lower surface of the extension support 402. The guiding keys and the guiding grooves 401 are in one-to-one correspondence and form a sliding pair connection, so that the extension support 402 can perform telescopic movement along the axial direction of the fork support 4. The tails of the two extension supports 402 are rigidly connected through a connecting frame 5. A linear telescopic rod 501 is installed at the central position of the end of the turntable 2 far from the vertical rail 1, and its telescopic direction is the same as the sliding direction of the extension support 402, and the output end of the linear telescopic rod 501 is fixedly connected to the connecting frame 5.

[0023] Further, a plurality of groups of annular positioning convex keys 202 which are concentrically distributed are arranged on the upper and lower end faces of the turntable 2. Corresponding positioning grooves 203 which are adapted to the annular positioning convex keys 202 are respectively formed on the upper surface of the bearing plate 101 and the lower surface of the limiting plate 103. The annular positioning convex keys 202 and the positioning grooves 203 adopt a convex key-groove fitting structure.

[0024] Further, the cross sections of the guiding grooves 401 and the guiding keys are both trapezoidal structures, and the inclination angle of the hypotenuse of the trapezoidal cross section is 5°-15°.

[0025] Further, anti-slip patterns are formed on the upper surfaces of the two extension supports 402.

[0026] Further, a plurality of groups of rollers 204 are installed on the inner walls of both sides of each positioning groove 203.

[0027] Further, the turntable 2 drives the two fork supports 4 to rotate around the support shaft 102 within a plane rotation angle range of 0° to 180°, so as to form a horizontal or vertical fork-taking posture to adapt to different cargo handling requirements.

[0028] When it is necessary to use the front fork assembly of the warehousing and logistics transport vehicle of the present invention for cargo handling operations:

[0029] Angle adjustment operation: According to the storage position and handling requirements of the cargo, start the motor installed on the bearing plate 101. The output shaft of the motor drives the gear 3 to rotate. The gear 3 meshes with the tooth rail 201 on the side wall of the turntable 2, so as to drive the turntable 2 to rotate around the support shaft 102. By controlling the rotation direction and rotation angle of the motor, the turntable 2 can drive the two fork supports 4 to rotate within the range of 0° to 180°, and adjust to a suitable fork-taking posture. For example, when the cargo is on a horizontally arranged shelf, rotate the fork support 4 to a horizontal posture to smoothly fork the cargo.

[0030] Feeding adjustment operation: If the goods are far from the forklift or deeper fork picking is required, activate the linear telescopic rod 501 installed at one end of the turntable 2 away from the vertical rail 1. The telescopic movement of the linear telescopic rod 501 drives the two groups of extension frames 402 to move synchronously along the axial direction of the fork 4 through the connecting frame 5. The guiding key on the lower surface of the extension frame 402 slides in the guiding groove 401 on the upper surface of the fork 4. Due to the trapezoidal cross-section structure of the guiding groove 401 and the guiding key and the appropriate bevel angle (5° - 15°), the stability and guiding property of the extension frame 402 during the telescopic process are ensured, and the flexible adjustment of the feeding amount of the fork 4 is realized. At the same time, the anti-slip pattern on the upper surface of the extension frame 402 can effectively prevent the goods from slipping during handling, ensuring handling safety.

[0031] Goods handling process: After adjusting the fork 4 to the appropriate angle and feeding amount, control the forklift to approach the goods, insert the fork 4 accurately under the goods, then lift the front fork assembly to lift the goods smoothly, and finally transport the goods to the designated position for placement. During the whole handling process, the fitting structure of the annular positioning key 202 and the positioning groove 203 between the turntable 2, the bearing plate 101 and the limit plate 103, and the rollers 204 on both inner walls of the positioning groove 203 ensure the stability and smoothness of the turntable 2 during rotation, reduce the rotation resistance, and improve the operation convenience and reliability of the front fork assembly.

[0032] Through the above specific implementation manners, the front fork assembly of the warehousing and logistics transport vehicle of the present invention can efficiently and flexibly complete the fork picking and handling operations of goods in a narrow space, effectively solving the problems existing in the prior art.

[0033] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A front fork assembly of a warehousing and logistics transport vehicle, characterized in that: The invention comprises a vertical rail (1), wherein a limiting plate (103) and a bearing plate (101) are vertically slidably connected on the vertical rail (1) from top to bottom in sequence, a support shaft (102) is vertically installed in the middle of the bearing plate (101), a turntable (2) is provided between the bearing plate (101) and the limiting plate (103), a through hole adapted to the outer diameter of the support shaft (102) is opened at the center of the turntable (2), the support shaft (102) passes through the through hole and forms a rotational fit with the inner wall of the through hole, and the upper and lower end surfaces of the turntable (2) respectively form a surface contact fit with the upper surface of the bearing plate (101) and the lower surface of the limiting plate (103), so that the turntable (2) can rotate around the support shaft (102); A semicircularly distributed rack rail (201) structure is provided on the side wall of the turntable (2) close to the vertical rail (1); a motor is installed on the bearing plate (101); a gear (3) is installed on the output shaft of the motor; the gear (3) and the rack rail (201) are meshed with each other; two sets of mutually parallel fork frames (4) are connected to the side of the turntable (2) away from the vertical rail (1); and the front ends of the two sets of fork frames (4) are slidably connected to extension frames (402).

2. The front fork assembly of a warehousing and logistics transport vehicle according to claim 1, characterized in that: The upper surface of the fork frame (4) is provided with a plurality of guide grooves (401) that are distributed at equal intervals and are parallel to each other in the axial direction, and the lower surface of the extension frame (402) is correspondingly provided with a plurality of guide keys, the guide keys corresponding to the guide grooves (401) one by one and forming a sliding pair connection, so that the extension frame (402) can perform telescopic movement along the axial direction of the fork frame (4); the tail ends of the two groups of extension frames (402) are rigidly connected by a connecting frame (5); A linear telescopic rod (501) is installed at the center of the turntable (2) away from one end of the vertical rail (1), and its telescopic direction is consistent with the sliding direction of the extension frame (402), and the output end of the linear telescopic rod (501) is fixedly connected to the connecting frame (5).

3. The front fork assembly of a warehousing and logistics transport vehicle according to claim 1, characterized in that: The upper and lower end surfaces of the turntable (2) are both provided with a plurality of groups of annular positioning convex keys (202) distributed in concentric circles, and corresponding positions of the upper surface of the carrier plate (101) and the lower surface of the limiting plate (103) are respectively provided with positioning grooves (203) adapted to the annular positioning convex keys (202), and the annular positioning convex keys (202) and the positioning grooves (203) adopt a convex key-groove interlocking structure.

4. The front fork assembly of a warehousing and logistics transport vehicle according to claim 2, characterized in that: The cross sections of the guide groove (401) and the guide key are both trapezoidal in structure, and the hypotenuse angle of the trapezoidal cross section is 5°-15°.

5. The front fork assembly of a warehousing and logistics transport vehicle according to claim 2, wherein: The upper surfaces of the two groups of extension frames (402) are both provided with anti-slip grooves.

6. The front fork assembly of a warehousing and logistics transport vehicle according to claim 3, characterized in that: Multiple groups of rollers (204) are installed on the inner walls on both sides of each group of positioning grooves (203).

7. The front fork assembly of a warehousing and logistics transport vehicle according to claim 1, characterized in that: The turntable (2) drives the two sets of fork frames (4) to rotate around the support shaft (102) in a plane angle range of 0° to 180° to form a horizontal or vertical forking posture to meet different cargo handling requirements.

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