Rotary double-stretching pallet fork and application device

Abstract

The utility model belongs to the technical field of transportation equipment, and provides a rotary double-stretching pallet fork and an application device. The bearing seat is rotationally connected with the base; the telescopic assembly is arranged at the top of the bearing seat, the first end of the telescopic assembly is fixedly connected with the bearing seat, and the second end can do telescopic motion relative to the first end; the material hooking element is arranged at the second end of the telescopic assembly, the first end of the material hooking element is rotationally connected with the telescopic assembly, the second end freely extends, and the material hooking element is provided with a material hooking position and an avoiding position; the first motor is fixedly connected with the telescopic assembly and used for driving the material hooking element to swing in a reciprocating mode between the material hooking position and the avoiding position; the material pushing element is arranged on the side, facing the first end of the telescopic assembly, of the material hooking element and fixedly connected with the telescopic assembly; and the driving assembly is arranged on the base and the bearing seat and is used for driving the bearing seat to rotate. The rotary double-stretching pallet fork and the application device are simple in structure, reasonable in design and good in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of transportation equipment technology, specifically to a rotating double-extending fork and its application device. Background Technology

[0002] To improve transportation efficiency and reduce labor costs, forks are usually installed on AGVs or stacker cranes to automatically move materials onto the AGV or stacker crane or move materials on the AGV or stacker crane to the target location.

[0003] However, the forks in the existing technology cannot change their orientation, which means they can only transfer materials in one direction. They also cannot extend or retract, which limits the range of materials they can transfer and makes them less adaptable. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a rotating double-extended fork and its application device to solve or alleviate the above-mentioned technical problems in the prior art.

[0005] To achieve the above objectives, this utility model provides a rotating double-extension fork, comprising:

[0006] Base;

[0007] A support base, which is rotatably connected to the base;

[0008] A telescopic assembly is disposed on the top of the support base, with its first end fixedly connected to the support base and its second end capable of telescopic movement relative to the first end;

[0009] A material-hooking element is disposed at the second end of the telescopic assembly, with its first end rotatably connected to the telescopic assembly and its second end extending freely, and it has a material-hooking position and an avoidance position;

[0010] The first motor is fixedly connected to the telescopic assembly, and its power output shaft is connected to the hook element for transmission, which is used to drive the hook element to swing back and forth between the hook position and the avoidance position.

[0011] A pusher element, disposed on the side of the hook element facing the first end of the telescopic assembly and fixedly connected to the telescopic assembly; and

[0012] A drive assembly, disposed on the base and the support, is used to drive the support to rotate.

[0013] Furthermore, the telescopic component includes:

[0014] Two telescopic mechanisms symmetrically arranged on both sides of the support base, the telescopic mechanisms comprising:

[0015] The system includes n telescopic plates, where n ≥ 3. These n telescopic plates are stacked sequentially and slidably connected to their corresponding counterparts. The outermost telescopic plate is designated as the first target telescopic plate, and this first target telescopic plate is fixedly connected to the support base.

[0016] Synchronization structure, which includes:

[0017] There are two second synchronous pulleys, named second synchronous pulley A and second synchronous pulley B respectively. Second synchronous pulley A is located at the first end of the telescopic plate and is rotatably connected to the telescopic plate. Second synchronous pulley B is located at the second end of the telescopic plate and is rotatably connected to the telescopic plate.

[0018] There are two second synchronous belts, named Second Synchronous Belt A and Second Synchronous Belt B respectively. The telescopic plate with the second synchronous pulley is the second target telescopic plate. The first end of the second synchronous belt A is fixedly connected to the telescopic plate located on the first side of the second target telescopic plate, and the second end passes around the second synchronous pulley A and is drivenly connected to the telescopic plate located on the second side of the second target telescopic plate. The first end of the second synchronous belt B is fixedly connected to the telescopic plate located on the first side of the second target telescopic plate, and the second end passes around the second synchronous pulley B and is drivenly connected to the telescopic plate located on the second side of the second target telescopic plate.

[0019] A drive mechanism is provided on the support base. The telescopic plate corresponding to the first target telescopic plate is designated as the third target telescopic plate. The drive mechanism is connected to the third target telescopic plate to drive the third target telescopic plate to move.

[0020] Furthermore, the drive mechanism includes:

[0021] Two transmission units symmetrically arranged on both sides of the support base, each transmission unit comprising:

[0022] Two first synchronous pulleys are provided, and the two first synchronous pulleys are arranged at intervals along the length direction of the support and are rotatably connected to the support; and

[0023] A first synchronous belt, fitted onto the two first synchronous pulleys and rotating with them, is connected to the third target telescopic plate to drive its movement; and

[0024] The second motor is fixedly connected to the bearing seat, and its power output shaft is connected to one of the first synchronous pulleys of the two transmission units.

[0025] Furthermore, a first transmission element is provided at the bottom of the third target telescopic plate, and the third target telescopic plate is connected to the first synchronous belt through the first transmission element.

[0026] Furthermore, a first limiting structure is provided at the bottom of the first transmission element, and a second limiting structure that cooperates with the first limiting structure is provided on the outer side of the first synchronous belt. The first transmission element and the first synchronous belt are connected by transmission through the first limiting structure and the second limiting structure.

[0027] Furthermore, a support plate is provided on the bearing seat, which is used to support the horizontal section of the first synchronous belt.

[0028] Furthermore, the driving component includes:

[0029] The third motor is fixedly connected to the base;

[0030] A first gear is sleeved on the power output shaft of the third motor and is drively connected to the power output shaft of the third motor; and

[0031] The second gear is located at the rotation center of the support seat, is fixedly connected to the support seat, and meshes with the first gear.

[0032] On the other hand, an application device includes the forks described in any one of the above.

[0033] Furthermore, the application device is an AGV or a stacker crane.

[0034] The beneficial effects of this utility model are:

[0035] The rotary double-extension fork and application device provided by this utility model, by setting a drive component, allows the fork to change its orientation, thereby enabling the fork to transfer materials in multiple directions. At the same time, by setting a telescopic component, the range of materials transferred by the fork is increased, thereby improving the adaptability of the fork. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0037] Figure 1 A perspective view of the rotating double-extending fork provided in a first direction according to an embodiment of the present invention;

[0038] Figure 2for Figure 1 An enlarged view of part A shown;

[0039] Figure 3 for Figure 1 A perspective view of the rotating double-extension forks shown in the second direction;

[0040] Figure 4 for Figure 1 The rotating double-extension fork shown is a perspective view in the second direction (after hiding a telescopic plate);

[0041] Figure 5 for Figure 4 An enlarged view of section B is shown below;

[0042] Figure 6 for Figure 1 The rotating double-extension forks shown are in a three-dimensional view in the third direction.

[0043] Figure 7 for Figure 1 A structural view of the telescopic assembly of the rotating double-extension forks when extended;

[0044] Figure 8 for Figure 1 The diagram shows a structural view of the telescopic assembly of the rotating double forks when it is shortened.

[0045] Figure label:

[0046] 100. Base; 200. Bearing seat; 310. Telescopic plate; 311. First telescopic plate; 312. Second telescopic plate; 313. Third telescopic plate; 314. Fourth telescopic plate; 321. Second synchronous pulley A; 322. Second synchronous pulley B; 323. Second synchronous belt A; 324. Second synchronous belt B; 331. First synchronous pulley; 332. First synchronous belt; 301. First limiting structure; 340. Second motor; 350. First transmission element; 351. Second limiting structure; 400. Hook element; 500. First motor; 600. Pushing element; 710. Third motor; 720. First gear; 730. Second gear; 800. Detection element. Detailed Implementation

[0047] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0048] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model.

[0050] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] like Figure 1-8 As shown, this utility model provides a rotating double-extending fork, including a base 100, a support base 200, a telescopic assembly, a hook element 400, a first motor 500, a pusher element 600, and a drive assembly.

[0054] The support seat 200 is rotatably connected to the base 100. The telescopic assembly is located on the top of the support seat 200, with its first end fixedly connected to the support seat 200 and its second end capable of telescopic movement relative to the first end.

[0055] A hook element 400 is disposed at the second end of the telescopic assembly. The first end of the hook element 400 is rotatably connected to the telescopic assembly, and the second end extends freely. The hook element 400 has a hooking position and an avoidance position. Specifically, when the hook element 400 is in the hooking position, the telescopic assembly retracts, and the material can be pulled onto the support seat 200 through the hook element 400; when the hook element 400 is in the avoidance position, the hook element 400 will not interfere with the material, thereby allowing the telescopic assembly to extend or retract undisturbed.

[0056] The first motor 500 is fixedly connected to the telescopic assembly, and the power output shaft of the first motor 500 is connected to the hook element 400 for transmission. The first motor 500 is used to drive the hook element 400 to reciprocate between the hook position and the avoidance position. In the working state, the first motor 500 places the hook element 400 in the hook position so that the material can be pulled onto the support seat 200. In the non-working state, the first motor 500 places the hook element 400 in the avoidance position so that the telescopic assembly can extend or retract undisturbed.

[0057] The pushing element 600 is disposed on the side of the hook element 400 facing the first end of the telescopic assembly and is fixedly connected to the telescopic assembly. In the working state, the telescopic assembly extends and retracts, thereby applying a force to the material through the pushing element 600 to push the material from the support 200 to the target position.

[0058] The drive assembly is mounted on the base 100 and the carrier 200, and is used to drive the carrier 200 to rotate. In operation, the drive assembly drives the carrier 200 to rotate, thereby changing the orientation of the carrier 200, thus moving materials from different locations onto the carrier 200 or moving materials on the carrier 200 to different locations, thereby increasing the applicability of the forks.

[0059] Specifically, when it is necessary to move the material onto the support seat 200, the first motor 500 first places the hook element 400 in the avoidance position so that when the telescopic component extends, the hook element 400 will not interfere with the material. Then the telescopic component extends, and when the hook element 400 moves to the side of the material away from the support seat 200, the first motor 500 places the hook element 400 in the hook position so that when the telescopic component retracts, the hook element 400 can cooperate with the material, thereby pulling the material onto the support seat 200. Then the telescopic component retracts, thereby pulling the material onto the support seat 200 through the hook element 400.

[0060] When it is necessary to move the material from the support 200 to the target position, the first motor 500 first places the hook element 400 in the avoidance position so that when the telescopic component extends, the hook element 400 will not interfere with the material. Then the telescopic component extends, and under the action of the push element 600, the push element 600 applies a force to the material, thereby pushing the material from the support 200 to the target position. After that, the telescopic component retracts.

[0061] The rotary double-extension fork provided by this utility model, by setting a drive component, allows the fork to change its orientation, thereby enabling the fork to transfer materials in multiple directions. At the same time, by setting a telescopic component, the range of materials transferred by the fork is increased, thus improving the adaptability of the fork.

[0062] like Figure 1 , 2 As shown in Figures 3 and 4, the telescopic assembly includes a telescopic mechanism and a drive mechanism.

[0063] There are two telescopic mechanisms, which are symmetrically arranged on both sides of the bearing seat 200. The telescopic mechanism includes a telescopic plate 310 and a synchronous structure.

[0064] There are n telescopic plates 310, where n≥3. The n telescopic plates 310 are stacked sequentially and slidably connected to the corresponding telescopic plates 310. The outermost telescopic plate 310 is designated as the first target telescopic plate, which is fixedly connected to the support seat 200.

[0065] Specifically, assume that the multiple telescopic plates 310 are respectively a first telescopic plate 311, a second telescopic plate 312, a third telescopic plate 313, a fourth telescopic plate 314, etc.; wherein, the first telescopic plate 311 is the first target telescopic plate, and the first telescopic plate 311 is fixedly connected to the support seat 200. The second telescopic plate 312 is the third target telescopic plate, and the second telescopic plate is disposed on the second side of the first telescopic plate 311 and slidably connected to the first telescopic plate 311; the third telescopic plate 313 is disposed on the second side of the second telescopic plate 312 and slidably connected to the second telescopic plate 312; and the fourth telescopic plate 314 is disposed on the second side of the third telescopic plate 313 and slidably connected to the third telescopic plate 313.

[0066] The synchronization structure includes a second synchronization pulley and a second synchronization belt.

[0067] There are two second synchronous pulleys, named second synchronous pulley A321 and second synchronous pulley B322 respectively. Second synchronous pulley A321 is located at the first end of the telescopic plate 310 and is rotatably connected to the telescopic plate 310, and second synchronous pulley B322 is located at the second end of the telescopic plate 310 and is rotatably connected to the telescopic plate 310.

[0068] Two second synchronous belts are provided, named second synchronous belt A323 and second synchronous belt B324 respectively. A telescopic plate 310 with a second synchronous pulley serves as the second target telescopic plate. The first end of the second synchronous belt A323 is fixedly connected to the telescopic plate 310 located on the first side of the second target telescopic plate, and the second end, after passing around the second synchronous pulley A321, is driveably connected to the telescopic plate 310 located on the second side of the second target telescopic plate (e.g., fixedly connected or driveably connected via a first transmission element 350). In this embodiment, a second transmission element is fixedly provided on the second synchronous belt A323, and a third transmission element is provided on the telescopic plate 310. The movement of the telescopic plate 310 is achieved through the cooperation of the second and third transmission elements.

[0069] The first end of the second synchronous belt B324 is fixedly connected to the telescopic plate 310 located on the first side of the second target telescopic plate, and the second end passes around the second synchronous pulley B322 and is drive-connected to the telescopic plate 310 located on the second side of the second target telescopic plate (e.g., fixed connection or drive-connection via the first transmission element 350). In this embodiment, a fourth transmission element is fixedly provided on the second synchronous belt B324, and a fifth transmission element is provided on the telescopic plate 310. Through the cooperation of the fourth transmission element and the fifth transmission element, the purpose of driving the telescopic plate 310 to move is achieved.

[0070] The drive mechanism is mounted on the support 200. The telescopic plate 310 corresponding to the first target telescopic plate is designated as the third target telescopic plate. The drive mechanism is connected to the third target telescopic plate to drive the third target telescopic plate to move.

[0071] like Figure 7As shown, there are four telescopic plates 310, named first telescopic plate 311, second telescopic plate 312, third telescopic plate 313, and fourth telescopic plate 314. First telescopic plate 311 is the first target telescopic plate and is fixedly connected to the support seat 200, while second telescopic plate 312 is the third target telescopic plate. The drive mechanism drives the third target telescopic plate (second telescopic plate 312) to extend. The second synchronous pulley A321, located at the first end of the second telescopic plate 312, moves forward. Since the first end of the second synchronous belt A323 is fixedly connected to the first telescopic plate 311, and the length of the second synchronous belt A323 remains constant, the first telescopic plate 311 drives the third telescopic plate 313 forward via the second synchronous belt A323, thereby achieving the purpose of extending the third telescopic plate 313. Similarly, the third telescopic plate 313 extends, and the second synchronous wheel A321, which is located at the first end of the third telescopic plate 313, moves forward. Since the first end of the second synchronous belt A323 is fixedly connected to the second telescopic plate 312 and the length of the second synchronous belt A323 remains unchanged, the second telescopic plate 312 drives the fourth telescopic plate 314 to move forward through the second synchronous belt A323, thereby achieving the purpose of extending the fourth telescopic plate 314.

[0072] like Figure 8 As shown, the drive mechanism drives the third target telescopic plate (second telescopic plate 312) to retract. The second synchronous pulley B322, located at the second end of the second telescopic plate 312, moves backward. Since the first end of the second synchronous belt B324 is fixedly connected to the first telescopic plate 311, and the length of the second synchronous belt A323 remains unchanged, the first telescopic plate 311 drives the third telescopic plate 313 to move backward via the second synchronous belt B324, thereby achieving the purpose of retracting the third telescopic plate 313. Similarly, when the telescopic plate 310 retracts and extends, the second synchronous pulley B322, located at the second end of the third telescopic plate 313, moves backward. Since the first end of the second synchronous belt B324 is fixedly connected to the second telescopic plate 312, and the length of the second synchronous belt B324 remains unchanged, the second telescopic plate 312 drives the fourth telescopic plate 314 to move backward via the second synchronous belt B324, thereby achieving the purpose of retracting the fourth telescopic plate 314.

[0073] like Figure 1 , 2 As shown in Figures 3 and 4, the drive mechanism includes a transmission unit and a second motor 340.

[0074] Two transmission units are symmetrically arranged on both sides of the support seat 200. The transmission unit includes a first synchronous pulley 331 and a first synchronous belt 332.

[0075] Two first synchronous pulleys 331 are provided, and the two first synchronous pulleys 331 are arranged at intervals along the length direction of the support 200 and are rotatably connected to the support 200.

[0076] The first synchronous belt 332 is sleeved on the two first synchronous pulleys 331 and can rotate with the rotation of the first synchronous pulleys 331. The first synchronous belt 332 is connected to the third target telescopic plate to drive the third target telescopic plate to move.

[0077] The second motor 340 is fixedly connected to the support 200, and the power output shaft of the second motor 340 is connected to a first synchronous pulley 331 of the two transmission units.

[0078] In use, the second motor 340 drives the first synchronous pulley 331 to rotate, thereby driving the third target telescopic plate to move via the first synchronous belt 332. Specifically, when the second motor 340 drives the first synchronous pulley 331 to rotate in the forward direction, the third target telescopic plate is driven to extend via the first synchronous belt 332; when the second motor 340 drives the first synchronous pulley 331 to rotate in the forward direction, the third target telescopic plate is driven to retract via the first synchronous belt 332.

[0079] like Figure 1 , 2 As shown, a first transmission element 350 is provided at the bottom of the third target telescopic plate, and the third target telescopic plate is connected to the first synchronous belt 332 through the first transmission element 350.

[0080] like Figure 2 As shown, a first limiting structure 301 is provided at the bottom of the first transmission element 350, and a second limiting structure 351 that cooperates with the first limiting structure 301 is provided on the outer side of the first synchronous belt 332. The first transmission element 350 and the first synchronous belt 332 are connected by transmission through the first limiting structure 301 and the second limiting structure 351. Specifically, the first limiting structure 301 and the second limiting structure 351 are mutually meshing limiting tooth structures.

[0081] Preferably, a support plate is provided on the bearing seat 200. The support plate is used to support the horizontal section of the first synchronous belt 332. In use, the support plate supports the first synchronous belt 332, so that the first synchronous belt 332 will not be deformed due to compression, thereby improving the stability of the cooperation between the first limiting structure 301 and the second limiting structure 351.

[0082] like Figure 6 The drive assembly includes a third motor 710, a first gear 720, and a second gear 730.

[0083] The third motor 710 is fixedly connected to the base 100. The first gear 720 is sleeved on the power output shaft of the third motor 710 and is connected to the power output shaft of the third motor 710 for transmission. The second gear 730 is located at the rotation center of the support 200, and is fixedly connected to the support 200. The second gear 730 meshes with the first gear 720.

[0084] In use, the third motor 710 drives the first gear 720 to rotate, which in turn drives the carrier 200 to rotate through the second gear 730, thereby changing the orientation of the carrier 200.

[0085] like Figure 5 As shown, preferably, a detection element 800 is provided at the hook element 400. The detection element 800 is used to detect whether the hook element 400 has passed the material. The detection element 800 is electrically connected to the controller.

[0086] Specifically, during the extension of the telescopic component, when the detection element 800 detects that the hook element 400 has passed the material, the controller controls the first motor 500 to drive the hook element 400 to swing from the avoidance position to the hook position.

[0087] In one embodiment, the present invention also provides an application device, including the rotary double-extension forks described in any of the above embodiments. Specifically, the application device is an AGV or a stacker crane.

[0088] Preferably, a cable is provided in the second synchronous belt closest to the hook element 400. The cable is connected to the power supply system and the first motor 500 to provide power to the first motor. This eliminates the need for a cable chain to provide power, saving materials and reducing manufacturing costs.

[0089] Preferably, the telescopic plate 310 has a U-shaped cross-section, allowing the second synchronous belt to be positioned within the space between adjacent telescopic plates 310. This not only effectively increases the extension length of the telescopic assembly but also makes the assembly thinner, occupies less space, and results in a more compact overall structure, thus improving the space utilization of the forklift. In this embodiment, the telescopic plates 310 are all 720mm long, and the maximum extension length of the telescopic assembly reaches 1500mm. This structural design, without excessively increasing the length of the telescopic plates 310, enables the telescopic assembly to achieve a longer extension length, simplifying the overall structure and making it suitable for widespread application.

[0090] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A rotating double-extension fork, characterized in that, include: Base (100); A support (200) is rotatably connected to the base (100); A telescopic assembly is disposed on the top of the support base (200), with its first end fixedly connected to the support base (200) and its second end capable of telescopic movement relative to the first end; A hook element (400) is disposed at the second end of the telescopic assembly, with its first end rotatably connected to the telescopic assembly and its second end freely extending, and having a hook position and an avoidance position; The first motor (500) is fixedly connected to the telescopic assembly, and its power output shaft is connected to the hook element (400) for driving the hook element (400) to swing back and forth between the hook position and the avoidance position. A pusher element (600) is disposed on the side of the hook element (400) facing the first end of the telescopic assembly and is fixedly connected to the telescopic assembly; as well as A drive assembly, disposed on the base (100) and the support (200), is used to drive the support (200) to rotate.

2. The rotating double-extension fork according to claim 1, characterized in that, The telescopic component includes: Two telescopic mechanisms symmetrically arranged on both sides of the support base (200), the telescopic mechanisms comprising: Telescopic plates (310), of which n are provided, where n≥3, are stacked sequentially and slidably connected to their corresponding telescopic plates (310). The outermost telescopic plate (310) is designated as the first target telescopic plate, and this first target telescopic plate is fixedly connected to the support base (200). Synchronization structure, which includes: There are two second synchronous pulleys, named second synchronous pulley A (321) and second synchronous pulley B (322). Second synchronous pulley A (321) is located at the first end of the telescopic plate (310) and rotatably connected to the telescopic plate (310). Second synchronous pulley B (322) is located at the second end of the telescopic plate (310) and rotatably connected to the telescopic plate (310). There are two second synchronous belts, named second synchronous belt A (323) and second synchronous belt B (324) respectively. The telescopic plate (310) with the second synchronous pulley is the second target telescopic plate. The first end of the second synchronous belt A (323) is fixedly connected to the telescopic plate (310) located on the first side of the second target telescopic plate, and the second end passes around the second synchronous pulley A (321) and is connected to the telescopic plate (310) located on the second side of the second target telescopic plate. The first end of the second synchronous belt B (324) is fixedly connected to the telescopic plate (310) located on the first side of the second target telescopic plate, and the second end passes around the second synchronous pulley B (322) and is connected to the telescopic plate (310) located on the second side of the second target telescopic plate. A drive mechanism is provided on the support base (200). The telescopic plate (310) corresponding to the first target telescopic plate is designated as the third target telescopic plate. The drive mechanism is connected to the third target telescopic plate in a transmission manner to drive the third target telescopic plate to move.

3. The rotating double-extension fork according to claim 2, characterized in that, The drive mechanism includes: Two transmission units symmetrically arranged on both sides of the support base (200), each transmission unit comprising: Two first synchronous pulleys (331) are provided, with the two first synchronous pulleys (331) arranged at intervals along the length direction of the support (200) and rotatably connected to the support (200); and A first synchronous belt (332), which is sleeved on the two first synchronous pulleys (331) and can rotate with the rotation of the first synchronous pulleys (331), is connected to the third target telescopic plate to drive the third target telescopic plate to move; and The second motor (340) is fixedly connected to the bearing (200), and its power output shaft is connected to one of the first synchronous pulleys (331) of the two transmission units.

4. The rotating double-extension fork according to claim 3, characterized in that, The bottom of the third target telescopic plate is provided with a first transmission element (350), and the third target telescopic plate is connected to the first synchronous belt (332) through the first transmission element (350).

5. The rotating double-extension fork according to claim 4, characterized in that, The first transmission element (350) is provided with a first limiting structure (301) at its bottom, and the first synchronous belt (332) is provided with a second limiting structure (351) on its outer side that cooperates with the first limiting structure (301). The first transmission element (350) and the first synchronous belt (332) are connected by transmission through the first limiting structure (301) and the second limiting structure (351).

6. The rotating double-extension fork according to claim 5, characterized in that, A support plate is provided on the bearing seat (200), which is used to support the horizontal section of the first synchronous belt (332).

7. The rotating double-extension fork according to any one of claims 1-6, characterized in that, The driving component includes: A third motor (710) is fixedly connected to the base (100); A first gear (720) is sleeved on the power output shaft of the third motor (710) and is drively connected to the power output shaft of the third motor (710); and The second gear (730) is located at the rotation center of the support (200), is fixedly connected to the support (200), and meshes with the first gear (720).

8. An application device, characterized in that, Includes the forklift as described in any one of claims 1-7.

9. The application device according to claim 8, characterized in that, The application device is an AGV or a stacker crane.

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