A lift fork

Abstract

The utility model belongs to material handling equipment technical field provides a kind of lifting fork, comprising: mounting seat;Rotary seat, it rotatably be set in the top of mounting seat;First drive component, it is set on rotary seat and / or mounting seat, first drive component is connected with rotary seat transmission;Bearing seat, it is set in the top of rotary seat and with rotary seat along first direction sliding connection, bearing seat has initial position and working position;Second drive component, it is set on rotary seat, second drive component is connected with bearing seat transmission;And material fixing component, it is set on rotary seat, material fixing component is used to when bearing seat is in initial position, clamp the material above on bearing seat.The lifting fork provided by the utility model, simple structure can fix the material on bearing seat, to prevent material from falling.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, specifically to a lifting fork. Background Technology

[0002] As the core actuator of material handling equipment (such as stacker cranes), forks are used to pick up, put down and transfer goods through extension and retraction. Common fork structures are mostly single-extension or double-extension types, relying on sprockets, chain drives or gear and rack drives to achieve extension and retraction, in order to adapt to the needs of goods storage and retrieval in racks of different depths.

[0003] However, existing forks generally lack an active clamping and securing mechanism for goods, relying solely on the static friction between the goods and the fork platform, as well as the edge restraints of the pallet, to achieve initial positioning. This positioning method has significant drawbacks in practical applications: when the stacker crane starts, brakes, turns, or lifts, the goods are prone to sliding relative to the fork platform due to inertial forces. In severe cases, this can even cause the goods to fall off the forks, resulting not only in damage to the goods and increased economic losses for the company, but also potentially leading to the stacker crane's downtime for maintenance, blockage of storage aisles, and disruption of the continuity of warehousing operations. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a lifting fork to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a lifting fork, comprising:

[0006] Mounting base;

[0007] A rotating base, which is rotatably mounted on top of the mounting base;

[0008] A first drive assembly is disposed on the rotary seat and / or the mounting base, the first drive assembly is connected to the rotary seat in a transmission manner, and the first drive assembly is used to drive the rotary seat to rotate.

[0009] A support seat is disposed on top of the rotating seat and slidably connected to the rotating seat along a first direction. The support seat has an initial position and a working position. When the support seat is in the initial position, it is located directly above the rotating seat. When the support seat is in the working position, it moves a preset distance away from the rotating seat along the first direction.

[0010] A second drive assembly, disposed on the rotary seat, is pulverizedly connected to the carrier seat and is used to drive the carrier seat to move along a first direction; and

[0011] A material fixing component is disposed on the rotating seat, the material fixing component being used to clamp the material on the carrier when the carrier is in the initial position.

[0012] Further, the first driving component includes:

[0013] The first gear is fixedly mounted on the mounting base, and the axis of the first gear coincides with the rotation center line of the rotating base;

[0014] A second gear, rotatably mounted on the rotating seat and meshing with the first gear, thereby enabling the first gear to drive the second gear to revolve about the axis of the first gear; and

[0015] A first motor is fixedly mounted on the rotating base. The power output shaft of the first motor is connected to the power input shaft of the second gear, thereby enabling the first motor to drive the second gear to rotate.

[0016] Furthermore, the radius of the first gear is larger than the radius of the second gear.

[0017] Furthermore, a first driving synchronous pulley is coaxially mounted on the power output shaft of the first motor, and a first driven synchronous pulley is coaxially mounted on the power input shaft of the second gear. The diameter of the first driven synchronous pulley is larger than the diameter of the first driving synchronous pulley, and a first synchronous belt is mounted on the first driving synchronous pulley and the first driven synchronous pulley.

[0018] Furthermore, the material fixing assembly includes:

[0019] Two material fixing plates are provided, each disposed on one side of the bearing seat. The material fixing plates are slidably connected to the rotating seat along a second direction, wherein the second direction is perpendicular to the first direction.

[0020] A third driving structure is disposed on the rotating base. The third driving structure is connected to the two material fixing plates in a transmission manner. The third driving structure is used to drive the two material fixing plates to move synchronously, and the two material fixing plates move in opposite directions.

[0021] Furthermore, the third driving structure includes:

[0022] The first lead screw has its axis arranged along the second direction, and the lead screw is rotatably connected to the rotary seat;

[0023] There are two first nuts, which are fixedly connected to the two material fixing plates respectively. Both first nuts are sleeved on the first lead screw, and when the first lead screw rotates, it can drive the two first nuts to move synchronously in opposite directions.

[0024] A third motor is fixedly mounted on the rotating base. The power output shaft of the third motor is connected to the first lead screw, thereby enabling the third motor to drive the first lead screw to rotate in the forward / reverse direction.

[0025] Furthermore, a third active synchronous pulley is coaxially mounted on the power output shaft of the third motor, and a third driven synchronous pulley is coaxially mounted on the first lead screw. The radius of the third driven synchronous pulley is larger than the radius of the third active synchronous pulley, and the third active synchronous pulley and the third driven synchronous pulley are connected by a third synchronous belt drive.

[0026] Furthermore, the material fixing plate includes:

[0027] A seat body is movably disposed on the rotating seat, and the length direction of the seat body is parallel to the moving direction of the bearing seat, and the seat body is fixedly connected to the first nut;

[0028] The first plate has two plates, which are spaced apart along the length of the base. The first plates are slidably connected to the base, and the sliding direction of the first plates is the same as the sliding direction of the support base.

[0029] The second lead screw is rotatably mounted on the base, and the axis of the second lead screw is parallel to the sliding direction of the bearing base.

[0030] There are two second nuts, both of which are sleeved on the second lead screw. When the second lead screw rotates, it can drive the two second nuts to move synchronously in opposite directions. The two second nuts are respectively fixedly connected to the two first plates.

[0031] The fourth motor is fixedly mounted on the base, and the power output shaft of the fourth motor is connected to the second lead screw drive.

[0032] Furthermore, the second driving component includes:

[0033] The second synchronous wheel is rotatably mounted on the top of the rotating seat. There are two second synchronous wheels, which are arranged alternately along the sliding direction of the bearing seat.

[0034] The second synchronous belt is sleeved on the two second synchronous pulleys and can rotate with the rotation of the second synchronous pulleys. The second synchronous pulleys have a first belt segment parallel to the sliding direction of the bearing seat. The first belt segment is connected to the bearing seat through a first connecting block.

[0035] The second motor is fixedly mounted on the rotating base. The power output shaft of the second motor is connected to one of the two second synchronous pulleys, so that the second motor can drive the second synchronous pulley to rotate in the forward / reverse direction.

[0036] Furthermore, the second driving component also includes:

[0037] A sliding seat is movably disposed on top of the rotating seat, and the moving direction of the sliding seat is consistent with the moving direction of the bearing seat. The first belt segment is fixedly connected to the sliding seat through the first connecting block.

[0038] A fourth synchronizing pulley, rotatably mounted on the sliding seat and capable of moving synchronously with the sliding seat, comprises two such pulleys spaced apart along the sliding direction of the sliding seat; and

[0039] A fourth synchronous belt is fitted onto the two fourth synchronous pulleys and can rotate with the rotation of the fourth synchronous pulleys. The fourth synchronous belt has a second belt segment and a third belt segment parallel to the sliding direction of the sliding seat. The second belt segment is located below the third belt segment. The second belt segment is fixedly connected to the rotating seat through a second connecting block, and the third belt segment is fixedly connected to the bearing seat through a third connecting block.

[0040] The beneficial effects of this utility model are:

[0041] The lifting fork provided by this utility model has a simple structure. By setting a material fixing component on the rotating seat, the material on the bearing seat is clamped and fixed when the bearing seat returns to the initial position, so that the material will not tilt or fall during the rotation of the rotating seat or the movement of the lifting fork. Attached Figure Description

[0042] 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.

[0043] Figure 1 A perspective view of the lifting fork provided in a first direction according to an embodiment of the present utility model;

[0044] Figure 2 for Figure 1 The image shows an internal perspective view of the lifting forks in the first direction;

[0045] Figure 3 for Figure 2 An enlarged view of part A is shown below;

[0046] Figure 4 for Figure 1 The shown is an internal perspective view of the lifting forks in the second direction;

[0047] Figure 5 for Figure 4 An enlarged view of section B is shown below;

[0048] Figure 6 for Figure 1 The image shown is an internal perspective view of the lifting forks in a third-party orientation.

[0049] Figure 7 for Figure 6 An enlarged view of section C is shown;

[0050] Figure 8 for Figure 6 An enlarged view of section D is shown;

[0051] Figure 9 A perspective view of the material fixing assembly for lifting forks provided in another embodiment of the present utility model;

[0052] Figure 10 for Figure 1 A view showing the working principle of the second drive assembly for lifting forks when the drive carrier extends;

[0053] Figure 11 for Figure 1 This is a view showing the working principle of the second drive assembly for lifting forks when driving the carrier to retract.

[0054] Figure label:

[0055] 100. Mounting base; 200. Rotary base; 300. Bearing base; 410. First gear; 420. Second gear; 430. First motor; 440. First driving synchronous pulley; 450. First driven synchronous pulley; 460. First synchronous belt; 510. Material fixing plate; 511. Base body; 512. First plate body; 513. Second lead screw; 514. Fourth motor; 521. First lead screw; 522. First nut; 523. Third motor; 524. Third driving synchronous pulley; 525. Third driven synchronous pulley; 526. Third synchronous belt; 611. Second synchronous pulley; 612. Second synchronous belt; 620. Second motor; 630. First connecting block; 640. Sliding base; 651. Fourth synchronous pulley; 652. Fourth synchronous belt; 660. Second connecting block; 670. Third connecting block. Detailed Implementation

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] like Figure 1-11 As shown, this utility model provides a lifting fork, including a mounting base 100, a rotating base 200, a first drive assembly, a bearing base 300, a second drive assembly, and a material fixing assembly.

[0063] The rotating base 200 is rotatably mounted on top of the mounting base 100. A first drive assembly is disposed on the rotating base 200 and / or the mounting base 100, and is drively connected to the rotating base 200, thereby enabling the first drive assembly to drive the rotating base 200 to rotate.

[0064] A support seat 300 is disposed on top of a rotating seat 200 and slidably connected to the rotating seat 200 along a first direction. The support seat 300 has an initial position and a working position. When the support seat 300 is in the initial position, it is directly above the rotating seat 200. When the support seat 300 is in the working position, it moves a preset distance away from the rotating seat 200 along the first direction. A second drive assembly is disposed on the rotating seat 200 and is drively connected to the support seat 300, thereby enabling the second drive assembly to drive the support seat 300 to move along the first direction. A material fixing assembly is disposed on the rotating seat 200 and is used to clamp the material on the support seat 300 when the support seat 300 is in the initial position.

[0065] Working principle:

[0066] When picking up goods, firstly, the second drive assembly drives the carrier 300 to move from the initial position along the first direction so that the carrier 300 extends, thereby facilitating the picking up and placing of materials; then, the second drive assembly drives the carrier 300 back to the initial position; next, the material fixing assembly clamps and fixes the material on the carrier 300, thereby preventing the material from tilting or falling during the rotation of the rotating seat 200 or the movement of the entire lifting fork.

[0067] The lifting fork provided in this embodiment has a simple structure. By setting a material fixing component on the rotating seat 200, the material on the bearing seat 310 is clamped and fixed when the bearing seat 300 returns to the initial position, so that the material will not tilt or fall during the rotation of the rotating seat 200 or the movement of the lifting fork.

[0068] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, in this embodiment, the first drive component includes a first gear 410, a second gear 420, and a first motor 430.

[0069] The first gear 410 is fixedly mounted on the mounting base 100, and its axis coincides with the rotation center line of the rotating base 200. The second gear 420 is rotatably mounted on the rotating base 200, and meshes with the first gear 410, thereby enabling the first gear 410 to drive the second gear 420 to revolve around its axis. The first motor 430 is fixedly mounted on the rotating base 200, and its power output shaft is connected to the power input shaft of the second gear 420, thereby enabling the first motor 430 to drive the second gear 420 to rotate.

[0070] Working principle:

[0071] During operation, the first motor 430 drives the second gear 420 to rotate. Since the second gear 420 meshes with the first gear 410 and the first gear 410 cannot rotate, the second gear 420 rotates on its own axis and, under the reaction force of the first gear 410, also revolves around the axis of the first gear 410, thereby causing the second gear 420 to rotate with the rotating seat 200.

[0072] Specifically, let the radius of the second gear 420 be r, the radius of the first gear 410 be R, the rotational speed of the second gear 420 be n, and the revolution speed of the second gear 420 be N. Then N = r * n / (r + R). It can be seen that regardless of whether the radius of the first gear 410 is larger or smaller than the radius of the second gear 420, the rotational speed of the rotating seat 200 is less than the rotational speed of the second gear 420, thereby effectively reducing the rotational speed of the rotating seat 200.

[0073] The first drive component provided in this embodiment drives the rotating seat 200 to rotate by the revolution of the second gear 420 around the first gear 410, thereby reducing the rotational speed of the rotating seat 200. Since the second gear 420 simultaneously bears the combined motion of rotation and revolution, the load is evenly transmitted through the tooth surface of the gear, dispersing the local force and improving the load-bearing capacity and service life of the overall structure.

[0074] Meanwhile, since the first gear 410 does not rotate, it serves as a support for the entire rotating seat 200, further enhancing the stability and reliability of the entire device.

[0075] According to the formula N = r * n / (r + R), the larger the radius of the first gear 410, the smaller the revolution speed of the second gear 420, and the smaller the rotation speed of the rotating seat 200. Therefore, as Figure 2 and Figure 3 As shown, in this embodiment, the diameter of the first gear 410 is larger than the diameter of the second gear 420, so as to further reduce the rotational speed of the rotating seat 200.

[0076] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, in this embodiment, the power output shaft of the first motor 430 is connected to the power input shaft of the second gear 420 via a first synchronous belt 460 structure. Specifically, a first driving synchronous pulley 440 is coaxially mounted on the power output shaft of the first motor 430, and a first driven synchronous pulley 450 is coaxially mounted on the power input shaft of the second gear 420. The first synchronous belt 460 is mounted on both the first driving synchronous pulley 440 and the first driven synchronous pulley 450. Furthermore, the diameter of the first driven synchronous pulley 450 is larger than the diameter of the first driving synchronous pulley 440.

[0077] Working principle:

[0078] During operation, the first motor 430 drives the first active synchronous pulley 440 to rotate, the first active synchronous pulley 440 drives the first driven synchronous pulley 450 to rotate via the first synchronous belt 460, and the first driven synchronous pulley 450 drives the second gear 420 to rotate.

[0079] Let the radius of the first driving synchronous pulley 440 be r, the radius of the first driven synchronous pulley 450 be R, the rotational speed of the first driving synchronous pulley 440 be n, and the rotational speed of the first driven synchronous pulley 450 be N. According to the formula: N=n*r / R, the larger the radius R of the first driven gear, the smaller the rotational speed of the first driven synchronous pulley 450, and the smaller the rotational speed of the second gear 420. This results in a smaller revolution speed of the second gear 420, which in turn results in a smaller rotational speed of the rotating seat 200, thereby achieving the purpose of further reducing the rotational speed of the rotating seat 200.

[0080] The first drive component provided in this embodiment has a simple structure and achieves maximum deceleration through multi-stage speed reduction, thereby making the rotation of the rotating seat 200 more stable and reliable.

[0081] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 9 As shown, in this embodiment, the material fixing assembly includes a material fixing plate 510 and a third driving structure.

[0082] Two material fixing plates 510 are provided, respectively positioned on both sides of the support base 300. The material fixing plates 510 are slidably connected to the rotating base 200 along a second direction, allowing them to slide only in this direction. This second direction is perpendicular to the first direction. A third drive structure is mounted on the rotating base 200 and is drively connected to the two material fixing plates 510. The third drive structure drives the two material fixing plates 510 to move synchronously in opposite directions.

[0083] Working principle:

[0084] When it is necessary to clamp the material on the support seat 300, the two material fixing plates 510 are driven to move closer to each other by the third drive structure. As the distance between the two material fixing plates 510 decreases, the two material fixing plates 510 squeeze the material on the support seat 300, thereby achieving the purpose of clamping the material and preventing the material on the support seat 300 from falling off.

[0085] When it is necessary to release the material on the support seat 300, the two material fixing plates 510 are driven to move away from each other by the third drive structure. As the distance between the two material fixing plates 510 increases, the material on the support seat 300 is released.

[0086] The material fixing component provided in this embodiment has a simple structure and reasonable design, and can clamp and fix the material on the support seat 300, thereby effectively preventing the material on the support seat 300 from falling off.

[0087] like Figures 2-4 As shown, in this embodiment, the third drive structure includes a first lead screw 521, a first nut 522, and a third motor 523.

[0088] The axis of the first lead screw 521 is set along the second direction, and the lead screw is rotatably connected to the rotating seat 200. There are two first nuts 522, which are fixedly connected to two material fixing plates 510 respectively. Both first nuts 522 are sleeved on the first lead screw 521, so that the first lead screw 521 can drive the two first nuts 522 to move synchronously, and the two first nuts 522 move in opposite directions.

[0089] Specifically, the first lead screw 521 is provided with two external thread sections with the same pitch but opposite helical directions, and two first nuts 522 are respectively sleeved on the two external thread sections, so that when the first lead screw 521 rotates, it can drive the two first nuts 522 to move closer or further apart from each other.

[0090] The third motor 523 is fixedly mounted on the rotating base 200. The power output shaft of the third motor 523 is connected to the first lead screw 521, thereby enabling the third motor 523 to drive the first lead screw 521 to rotate in the forward / reverse direction.

[0091] Working principle:

[0092] When it is necessary to clamp the material, the third motor 523 drives the first lead screw 521 in the positive direction. With the cooperation of the first lead screw 521 and the two first nuts 522, the first lead screw 521 drives the two first nuts 522 to move closer to each other. The two first nuts 522 then bring the two material fixing plates 510 closer to each other, thereby achieving the purpose of clamping the material.

[0093] When it is necessary to release the material, the third motor 523 drives the first lead screw 521 to rotate in the opposite direction. With the cooperation of the first lead screw 521 and the two first nuts 522, the first lead screw 521 drives the two first nuts 522 to move away from each other. The two first nuts 522 then move away from each other along with the two material fixing plates 510, thereby achieving the purpose of releasing the material.

[0094] The third drive structure provided in this embodiment drives the two first nuts 522 to move closer or further apart synchronously via the first lead screw 521, resulting in good centering performance and effectively preventing material deviation caused by excessively rapid movement on one side. Furthermore, the first lead screw 521 and the first nuts 522 are in rigid meshing transmission, eliminating slippage and lag issues compared to pneumatic, hydraulic, or belt drives. This allows for precise conversion of the rotational motion of the third motor 523 into the linear motion of the first nuts 522. By controlling the rotation angle of the third motor 523 (e.g., using a stepper motor or servo motor), the moving distance of the two material fixing plates 510 can be precisely controlled (movement = pitch × number of rotations), thereby accurately adjusting the clamping gap and clamping force (clamping force is directly related to parameters such as motor output torque and the lead of the first lead screw 521), adapting to materials of different hardness and size (e.g., fragile items require less clamping force, while heavy materials require more clamping force).

[0095] Preferably, the first lead screw 521 is a self-locking lead screw 521, for example, the thread of the first lead screw 521 is a trapezoidal thread, a rectangular thread, etc. When the third motor 523 stops rotating, the friction between the first lead screw 521 and the first nut 522 can prevent the first nut 522 from moving in the opposite direction, realizing "power-off self-locking"—even under load, the material fixing plate 510 will not loosen on its own, and can stably maintain the clamping state, improving the safety of material clamping. At the same time, the two first nuts 522 are symmetrically stressed, and the radial forces on the first lead screw 521 are balanced, reducing the bending or wear of the first lead screw 521 caused by unilateral stress, and extending the service life of the overall structure.

[0096] like Figures 2-4 As shown, in this embodiment, the power output shaft of the third motor 523 is connected to the first lead screw 521 via a third synchronous belt 526. Specifically, a third driving synchronous pulley 524 is coaxially mounted on the power output shaft of the third motor 523, and a third driven synchronous pulley 525 is coaxially mounted on the first lead screw 521. The third driving synchronous pulley 524 and the third driven synchronous pulley 525 are connected via a third synchronous belt 526. Furthermore, the radius of the third driven synchronous pulley 525 is larger than the radius of the third driving synchronous pulley 524.

[0097] Working principle:

[0098] During operation, the third motor 523 drives the third active synchronous pulley 524 to rotate, the third active synchronous pulley 524 drives the third driven synchronous pulley 525 to rotate through the third synchronous belt 526, and the third driven synchronous pulley 525 drives the first lead screw 521 to rotate.

[0099] Let the radius of the third driving synchronous pulley 524 be r, the radius of the third driven synchronous pulley 525 be R, the rotational speed of the third driving synchronous pulley 524 be n, and the rotational speed of the third driven synchronous pulley 525 be N. According to the formula N = n * r / R, the larger the radius R of the third driven gear, the lower the rotational speed of the third driven synchronous pulley 525, the lower the rotational speed of the first lead screw 521, and the lower the movement speed of the material fixing plate 510. This achieves the purpose of reducing the movement speed of the material fixing plate 510, thereby making the material fixing assembly more stable during the clamping process. At the same time, according to the principle of speed reduction and torque increase, with a constant output power of the third motor 523, the lower the rotational speed of the first lead screw 521, the greater the output torque of the first lead screw 521, thereby improving the stability and reliability of material clamping.

[0100] like Figure 9 As shown, in this embodiment, the material fixing plate 510 includes a base 511, a first plate 512, a second lead screw 513, a second nut, and a fourth motor 514.

[0101] The base 511 is movably mounted on the rotating base 200 and is fixedly connected to the first nut 522. The length direction of the base 511 is parallel to the moving direction of the bearing base 300. Two first plates 512 are provided, spaced apart along the length direction of the base 511. The first plates 512 are slidably connected to the base 511, and the sliding direction of the first plates 512 is the same as the sliding direction of the bearing base 300. The second lead screw 513 is rotatably mounted on the base 511, and the axis of the second lead screw 513 is parallel to the sliding direction of the bearing base 300.

[0102] Two second nuts are provided, both of which are sleeved on the second lead screw 513. When the second lead screw 513 rotates, it can drive the two second nuts to move synchronously in opposite directions. The two second nuts are respectively fixedly connected to the two first plates 512.

[0103] Specifically, the second lead screw 513 is provided with two external thread sections with the same pitch but opposite helical directions. Two second nuts are respectively sleeved on the two external thread sections, so that when the second lead screw 513 rotates, it can drive the two second nuts to move closer or further apart from each other.

[0104] The fourth motor 514 is fixedly mounted on the base 511. The power output shaft of the fourth motor 514 is connected to the second lead screw 513, thereby enabling the fourth motor 514 to drive the second lead screw 513 to rotate.

[0105] Working principle:

[0106] During operation, the fourth motor 514 drives the second lead screw 513 to rotate. The second lead screw 513 drives the two second nuts to move closer or further apart. The two second nuts, in turn, move the two first plates 512 closer or further apart, thereby changing the length of the material fixing plate 510. This allows the material fixing plate 510 to effectively clamp goods of various sizes, thus improving the versatility of the entire device.

[0107] The material fixing plate 510 provided in this embodiment has an adjustable length, which enables it to effectively clamp goods of various sizes, thereby improving the versatility of the entire device.

[0108] like Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, the second drive assembly includes a second synchronous belt 611, a second synchronous pulley 612, and a second motor 620.

[0109] The second synchronous pulley 611 is rotatably mounted on the top of the rotating seat 200. Two second synchronous pulleys 611 are provided, spaced apart sequentially along the sliding direction of the support seat 300. The second synchronous belt 612 is fitted onto the two second synchronous pulleys 611 and can rotate with the rotation of the second synchronous pulleys 611. Each second synchronous pulley 611 has a first belt segment parallel to the sliding direction of the support seat 300, and the first belt segment is connected to the support seat 300 via a first connecting block 630.

[0110] The second motor 620 is fixedly mounted on the rotating base 200. The power output shaft of the second motor 620 is connected to one of the two second synchronous pulleys 611, thereby enabling the second motor 620 to drive the second synchronous pulley 611 to rotate in the forward / reverse direction. Preferably, the second motor 620 is a servo motor to facilitate control of the rotation direction of the second motor 620.

[0111] Working principle:

[0112] In use, the second motor 620 drives the second synchronous pulley 611 to rotate, the second synchronous pulley 611 drives the second synchronous belt 612 to rotate, and the second synchronous belt 612 drives the support seat 300 to move through the first connecting block 630. Specifically, when the second motor 620 drives the second synchronous pulley 611 to rotate in the positive direction, the second synchronous pulley 611 drives the second synchronous belt 612 to rotate in the positive direction, and the second synchronous belt 612 drives the support seat 300 to move away from the rotating seat 200 through the first connecting block 630; when the second motor 620 drives the second synchronous pulley 611 to rotate in the opposite direction, the second synchronous pulley 611 drives the second synchronous belt 612 to rotate in the opposite direction, and the second synchronous belt 612 drives the support seat 300 to move closer to the rotating seat 200 through the first connecting block 630.

[0113] The second driving component provided in this embodiment has a simple and compact structure.

[0114] like Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, the second drive assembly also includes a sliding seat 640, a fourth synchronous pulley 651, and a fourth synchronous belt 652.

[0115] The sliding seat 640 is movably mounted on top of the rotating seat 200, and the moving direction of the sliding seat 640 is consistent with the moving direction of the bearing seat 300. The first belt segment is fixedly connected to the sliding seat 640 through the first connecting block 630.

[0116] The fourth synchronous pulley 651 is rotatably mounted on the sliding seat 640 and can move synchronously with the sliding seat 640. Two fourth synchronous pulleys 651 are provided, spaced apart along the sliding direction of the sliding seat 640. The fourth synchronous belt 652 is sleeved on the two fourth synchronous pulleys 651 and can rotate with the rotation of the fourth synchronous pulleys 651. The fourth synchronous belt 652 has a second belt segment and a third belt segment parallel to the sliding direction of the sliding seat 640. The second belt segment is located below the third belt segment. The second belt segment is fixedly connected to the rotating seat 200 via a second connecting block 660. The third belt segment is fixedly connected to the bearing seat 300 via a third connecting block 670.

[0117] Working principle:

[0118] In operation, the second motor 620 drives the second synchronous pulley 611 to rotate, which in turn drives the second synchronous belt 612 to rotate. The second synchronous belt 612 then drives the sliding seat 640 to move. The sliding seat 640, in turn, moves along with the two fourth synchronous pulleys 651. Since the second belt segment is fixedly connected to the rotating seat 200, the connection point between the second belt segment and the rotating seat 200 is fixed. Therefore, during the movement of the sliding seat 640, the rotating seat 200 applies a force to the fourth synchronous belt 652, causing the fourth synchronous belt 652 to rotate, which in turn drives the support seat 300 to move.

[0119] Specifically, such as Figure 10 As shown, when the second motor 620 drives the second synchronous pulley 611 to rotate in the positive direction, the second synchronous pulley 611 drives the second synchronous belt 612 to rotate in the positive direction. The second synchronous belt 612 then drives the sliding seat 640 to move away from the rotating seat 200 on the rotating seat 200 through the first connecting block 630. During this process, the fourth synchronous belt 652 rotates in the positive direction, thereby driving the bearing seat 300 to move away from the rotating seat 200 on the sliding seat 640 through the third connecting block 670.

[0120] like Figure 11 As shown, when the second motor 620 drives the second synchronous pulley 611 to rotate in the opposite direction, the second synchronous pulley 611 drives the second synchronous belt 612 to rotate in the opposite direction. The second synchronous belt 612 then drives the sliding seat 640 to move closer to the rotating seat 200 on the rotating seat 200 through the first connecting block 630. During this process, the fourth synchronous belt 652 rotates in the opposite direction, thereby driving the bearing seat 300 to move closer to the rotating seat 200 on the sliding seat 640 through the third connecting block 670.

[0121] The second drive assembly provided in this embodiment, by setting up a sliding seat 640, a fourth synchronous pulley 651, and a fourth synchronous belt 652, achieves secondary extension and retraction of the carrier 300, thereby increasing the range of motion of the carrier 300. At the same time, while maintaining the same range of motion, it makes the entire lifting fork structure more compact.

[0122] 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.

[0123] 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 lifting fork, characterized in that, include: Mounting base; A rotating base, which is rotatably mounted on top of the mounting base; A first drive assembly is disposed on the rotary seat and / or the mounting base, the first drive assembly is connected to the rotary seat in a transmission manner, and the first drive assembly is used to drive the rotary seat to rotate. A support seat is disposed on top of the rotating seat and slidably connected to the rotating seat along a first direction. The support seat has an initial position and a working position. When the support seat is in the initial position, it is located directly above the rotating seat. When the support seat is in the working position, it moves a preset distance away from the rotating seat along the first direction. A second drive assembly, disposed on the rotary seat, is pulverizedly connected to the carrier seat and is used to drive the carrier seat to move along a first direction; and A material fixing component is disposed on the rotating seat, the material fixing component being used to clamp the material on the carrier when the carrier is in the initial position.

2. The lifting fork according to claim 1, characterized in that, The first driving component includes: The first gear is fixedly mounted on the mounting base, and the axis of the first gear coincides with the rotation center line of the rotating base; A second gear, rotatably mounted on the rotating seat and meshing with the first gear, thereby enabling the first gear to drive the second gear to revolve about the axis of the first gear; and The first motor is fixedly mounted on the rotating base, and the power output shaft of the first motor is connected to the power input shaft of the second gear.

3. The lifting fork according to claim 2, characterized in that, The radius of the first gear is greater than the radius of the second gear.

4. The lifting fork according to claim 2 or 3, characterized in that, A first driving synchronous pulley is coaxially mounted on the power output shaft of the first motor, and a first driven synchronous pulley is coaxially mounted on the power input shaft of the second gear. The diameter of the first driven synchronous pulley is larger than the diameter of the first driving synchronous pulley, and a first synchronous belt is mounted on the first driving synchronous pulley and the first driven synchronous pulley.

5. The lifting fork according to any one of claims 1-3, characterized in that, The material fixing assembly includes: Two material fixing plates are provided, each disposed on one side of the bearing seat. The material fixing plates are slidably connected to the rotating seat along a second direction, wherein the second direction is perpendicular to the first direction. A third driving structure is disposed on the rotating base. The third driving structure is connected to the two material fixing plates in a transmission manner. The third driving structure is used to drive the two material fixing plates to move synchronously, and the two material fixing plates move in opposite directions.

6. The lifting fork according to claim 5, characterized in that, The third driving structure includes: The first lead screw has its axis arranged along the second direction, and the lead screw is rotatably connected to the rotary seat; There are two first nuts, which are respectively fixedly connected to the two material fixing plates. Both first nuts are sleeved on the first screw, and when the first screw rotates, it can drive the two first nuts to move synchronously in opposite directions. The third motor is fixedly mounted on the rotating base, and the power output shaft of the third motor is connected to the first lead screw drive.

7. The lifting fork according to claim 6, characterized in that, A third active synchronous pulley is coaxially mounted on the power output shaft of the third motor, and a third driven synchronous pulley is coaxially mounted on the first lead screw. The radius of the third driven synchronous pulley is larger than the radius of the third active synchronous pulley. The third active synchronous pulley and the third driven synchronous pulley are connected by a third synchronous belt.

8. The lifting fork according to claim 6, characterized in that, The material fixing plate includes: A seat body is movably disposed on the rotating seat, and the length direction of the seat body is parallel to the moving direction of the bearing seat, and the seat body is fixedly connected to the first nut; The first plate has two plates, which are spaced apart along the length of the base. The first plates are slidably connected to the base, and the sliding direction of the first plates is the same as the sliding direction of the support base. The second lead screw is rotatably mounted on the base, and the axis of the second lead screw is parallel to the sliding direction of the bearing base. There are two second nuts, both of which are sleeved on the second lead screw. When the second lead screw rotates, it can drive the two second nuts to move synchronously in opposite directions. The two second nuts are respectively fixedly connected to the two first plates. The fourth motor is fixedly mounted on the base, and the power output shaft of the fourth motor is connected to the second lead screw drive.

9. The lifting fork according to claim 1, 2, 3, 6, 7 or 8, characterized in that, The second driving component includes: The second synchronous wheel is rotatably mounted on the top of the rotating seat. There are two second synchronous wheels, which are arranged alternately along the sliding direction of the bearing seat. The second synchronous belt is sleeved on the two second synchronous pulleys and can rotate with the rotation of the second synchronous pulleys. The second synchronous pulleys have a first belt segment parallel to the sliding direction of the bearing seat. The first belt segment is connected to the bearing seat through a first connecting block. The second motor is fixedly mounted on the rotating base, and the power output shaft of the second motor is connected to one of the two second synchronous pulleys.

10. The lifting fork according to claim 9, characterized in that, The second driving component also includes: A sliding seat is movably disposed on top of the rotating seat, and the moving direction of the sliding seat is consistent with the moving direction of the bearing seat. The first belt segment is fixedly connected to the sliding seat through the first connecting block. A fourth synchronizing pulley, rotatably mounted on the sliding seat and capable of moving synchronously with the sliding seat, comprises two such pulleys spaced apart along the sliding direction of the sliding seat; and A fourth synchronous belt is fitted onto the two fourth synchronous pulleys and can rotate with the rotation of the fourth synchronous pulleys. The fourth synchronous belt has a second belt segment and a third belt segment parallel to the sliding direction of the sliding seat. The second belt segment is located below the third belt segment. The second belt segment is fixedly connected to the rotating seat through a second connecting block, and the third belt segment is fixedly connected to the bearing seat through a third connecting block.

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