Grabbing assembly and pallet fork assembly

Abstract

The utility model is suitable for the technical field of warehousing, and provides a grabbing assembly and a pallet fork assembly. The pallet fork assembly comprises a grabbing assembly, the grabbing assembly comprises a mounting part, a grabbing part, a driving connecting rod and a driven connecting rod, the grabbing part is used for grabbing goods, the driving connecting rod is driven by a driving part and rotatably connected with the grabbing part, and the driving connecting rod drives the grabbing part to swing back and forth in the same horizontal plane so as to be close to and away from the mounting part; the driven connecting rod is rotationally connected with the mounting piece and the grabbing piece so as to swing in a reciprocating mode along with reciprocating swing of the grabbing piece. Through reciprocating swing of the driving connecting rod and the driven connecting rod, the grabbing part moves close to and far away from the mounting part in the same horizontal plane, so that a space for overturning the grabbing part does not need to be reserved in the height space, the height size of the pallet fork assembly is reduced, and the moving flexibility and the working efficiency of the transfer robot are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the warehouse technology field especially relates to a kind of grabbing subassembly and pallet fork subassembly. BACKGROUND

[0002] With the rapid development of artificial intelligence technology, automation technology and information technology, the intelligent degree of terminal logistics is also constantly improved, and intelligent logistics terminal is the development trend of terminal logistics. The carrying robot is one of the main equipment that can realize intelligent logistics terminal and carry out automatic carrying operation. Through the carrying robot, the heavy physical labor of human can be reduced, and the carrying efficiency can be improved. In the related technology, the carrying robot lifts and places goods through the pallet fork subassembly. However, in the related technology, the components in the pallet fork subassembly are complex and the space utilization rate is poor, which makes the height size of the pallet fork subassembly larger, affecting the moving flexibility and operation efficiency of the carrying robot. SUMMARY

[0003] Therefore, the utility model provides a kind of grabbing subassembly and pallet fork subassembly to solve the technical problem of how to reduce the height size of pallet fork subassembly.

[0004] To solve the above problems, the technical scheme provided by the utility model embodiment is as follows:

[0005] The utility model embodiment provides a kind of grabbing subassembly, comprising: mounting piece;Grabbing piece is used to grab goods;Driving link is driven by driving piece and is rotatably connected with grabbing piece, and the driving link drives the grabbing piece to reciprocate in horizontal plane to approach and away from the mounting piece;Driven link is rotatably connected with the mounting piece and the grabbing piece to reciprocate with the reciprocation of the grabbing piece.

[0006] In some embodiments, the driving link, the driven link and the grabbing piece all move in the horizontal plane;The driving link includes first extension and second extension connected in sequence from the mounting piece to the grabbing piece, and the extension direction of the first extension and the extension direction of the second extension are first preset angle;The driven link includes third extension and fourth extension connected in sequence from the mounting piece to the grabbing piece, and the extension direction of the third extension and the extension direction of the fourth extension are second preset angle.

[0007] In some embodiments, the first preset angle is equal to the second preset angle, the first extension and the fourth extension are parallel, and contact and separate with the reciprocation of the grabbing piece.

[0008] In some embodiments, the material grabbing member is provided with a through groove at both ends of the extending direction of the material grabbing member, the through groove is located between both ends of the thickness direction of the material grabbing member, and the driving link and the driven link correspondingly extend into the through groove and are hinged with the material grabbing member.

[0009] In some embodiments, the mounting member comprises a receiving groove in communication with the outside, one end of the driving link and one end of the driven link are hinged with the mounting member, and the hinge points are arranged in the receiving groove.

[0010] In some embodiments, the receiving groove extends along a first direction, and in the first state where the material grabbing member is farthest away from the mounting member and the second state where the material grabbing member is closest to the mounting member, the extending direction of the material grabbing member is along the first direction.

[0011] In some embodiments, in the second state, at least part of at least one of the driving link, the driven link and the material grabbing member is located in the receiving groove.

[0012] In some embodiments, the grabbing assembly further comprises a driving member arranged on the outer surface of the mounting member, a driving shaft of the driving member extends through the mounting member into the receiving groove and is hinged with one end of the driving link.

[0013] In some embodiments, the extending direction of the driving shaft is perpendicular to the first direction in which the mounting member extends, so that the driving link, the driven link and the material grabbing member all move in a horizontal plane parallel to the first direction.

[0014] In a second aspect, the utility model further provides a fork assembly, the fork assembly is used for being installed in a carrying robot, the fork assembly comprises: a fork body; at least two telescopic arms are arranged on opposite two side surfaces of the fork body respectively, the telescopic arm can extend and retract relative to the fork body; the grabbing assembly of the first aspect, the mounting member of the grabbing assembly is fixed to the telescopic arm or the telescopic arm is the mounting member.

[0015] The utility model discloses an embodiment provides a kind of grabbing assembly, including mounting piece, grabbing piece, drive link and driven link, grabbing piece is used to grab goods, drive link is driven by driving piece and is rotatably connected with grabbing piece, drive link drives grabbing piece to reciprocate swing in horizontal plane to approach and away from mounting piece, driven link is rotatably connected with mounting piece and grabbing piece, to reciprocate swing with the reciprocating swing of grabbing piece. Then, an embodiment of the utility model is connected driving piece and grabbing piece by drive link and driven link on the one hand, structure is simple, convenient to lay out;On the other hand, by driving, grabbing piece can swing in horizontal plane to approach and away from mounting piece, to realize the grabbing and placement of goods, grabbing piece is not in vertical plane overturns, so grabbing assembly's height space does not need to reserve the space that can be provided for grabbing piece overturning, reduce the height size of grabbing assembly, to reduce the height size of fork assembly, improve the moving flexibility and operation efficiency of handling robot. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure schematic diagram of handling robot provided by the utility model embodiment is provided.

[0017] Figure 2 The structure schematic diagram of grabbing assembly in first state provided by the utility model embodiment is provided.

[0018] Figure 3 The structure schematic diagram of grabbing assembly in second state provided by the utility model embodiment is provided.

[0019] Figure 4 The assembly schematic diagram of grabbing piece and drive link and driven link in first state provided by the utility model embodiment is provided.

[0020] Figure 5 The assembly schematic diagram of drive link and driven link in second state provided by the utility model embodiment is provided.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 10, fork assembly;1, grabbing assembly;11, mounting piece;111, storage groove;12, grabbing piece;121, through groove;13, drive link;131, first extension;132, second extension;14, driven link;141, third extension;142, fourth extension;15, driving piece;151, drive shaft;2, fork body;3, telescopic arm. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0024] In the specific embodiments, each specific technical feature described can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of each specific technical feature in the utility model are not described again.

[0025] In the following description, the terms "first", "second", and the like are only used to distinguish different objects, and do not mean that the objects have the same or related relationship. It should be understood that the orientation description "upper", "lower", "outer", "inner" is the orientation in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagram, which can be the left and right directions in the normal use state or not.

[0026] It should be noted that the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "includes one" does not exclude the presence of another identical element in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0027] As Figure 1 The utility model embodiment provides a kind of grabbing assembly 1, for being installed in fork assembly 10 of handling robot, to realize the grabbing of goods.It should be noted that the goods in the utility model embodiment can be contained in material box, simply, namely, material box indicates goods, material box is not limited to shape, size and the like parameters, all material boxes in warehouse can be one or more standard parts;Of course, in other embodiments, the goods stored can also not be contained in material box, directly use goods itself or use other forms to express.

[0028] As Figure 2As shown, the grabbing assembly 1 comprises a mounting member 11, a grabbing member 12, a driving link 13 and a driven link 14, and the mounting member 11 serves as a mounting base of the grabbing member 12, the driving link 13 and the driven link 14. The grabbing member 12 is used for grabbing goods, and specifically, the outer surface of the goods box can form a stepped surface, and the grabbing member 12 can be abutted below the stepped surface of the goods box to support the goods box in the height direction, so that the goods box moves with the movement of the fork assembly. It should be noted that the height direction can be the thickness direction of the grabbing assembly 1 and the grabbing member 12.

[0029] It can be understood that if the grabbing member 12 is flipped in the height direction to achieve grabbing of goods and retraction when not grabbing goods, the height space of the grabbing assembly 1 needs to be reserved for the flipping of the grabbing member 12, and the minimum height dimension of the grabbing assembly 1 is limited, so that the height of the grabbing assembly 1 is larger, thereby making the height and volume of the fork assembly 10 larger, affecting the moving flexibility and working efficiency of the carrying robot.

[0030] In the grabbing assembly 1 provided in the embodiment of the utility model, as shown in Figure 2 and Figure 3 , the driving link 13 is driven by a driving member 15 and rotatably connected with the grabbing member 12, and the driving link 13 drives the grabbing member 12 to reciprocally swing in the horizontal plane to approach and move away from the mounting member 11, that is, the driving link 13 drives the grabbing member 12 to swing out and retract in the horizontal plane. The driving member 15 can be a motor, and the driving member 15 can be coaxially connected with the driving link 13 directly or indirectly connected with the driving link 13 through a synchronous wheel or a gear and the like transmission member, as long as the driving member 15 can rotate the driving link 13 to drive the grabbing member 12 to reciprocally swing in the horizontal plane. That is, the driving member 15 drives the grabbing member 12 to reciprocally swing in the horizontal plane through a double-link structure, so that the grabbing member 12 approaches and moves away from the mounting member 11 in the horizontal plane. The grabbing member 12 does not flip in the height direction, and the grabbing assembly 1 does not need to reserve space for the flipping of the grabbing member 12 in the height direction, and the height dimension of the grabbing assembly 1 is smaller, thereby reducing the overall height dimension of the fork assembly 10. And only one driving link 13 and one driven link 14 are needed to connect the driving member 15 and the grabbing member 12, and the structure is simple and convenient to arrange, the number of parts is smaller, and the space occupied is smaller, which is also conducive to reducing the volume of the grabbing assembly 1, thereby reducing the volume of the fork assembly 10. In addition, since the grabbing member 12 is hinged with the two links, the grabbing member 12 rolls in contact with the goods box when approaching the goods box in the horizontal plane, which reduces the possibility of collision with the goods box, and more safe and reliable operation can be achieved.

[0031] The utility model embodiment provides a grab component 1, including mounting piece 11, grab material piece 12, drive connecting rod 13 and driven connecting rod 14, grab material piece 12 is used for grabbing goods, drive connecting rod 13 is driven by drive piece 15 and is rotatably connected with grab material piece 12, drive connecting rod 13 drives grab material piece 12 to swing back and forth in horizontal plane to approach and away from mounting piece 11, driven connecting rod 14 is rotatably connected with mounting piece 11 and grab material piece 12 to swing back and forth with the swing back and forth of grab material piece 12. Grab material piece 12 swings in the same horizontal plane and approaches and away from mounting piece 11, does not occupy height space, reduces the height size of grab component 1, thereby reduces the height size of fork assembly 10, and only needs to connect drive piece 15 and grab material piece 12 through drive connecting rod 13 and driven connecting rod 14, and the structure is simple, convenient to arrange.

[0032] In some embodiments, as shown in Figure 4 The drive connecting rod 13, the driven connecting rod 14 and the grab material piece 12 all move in a horizontal plane. It can be understood that the drive piece 15 driving the grab material piece 12 to swing back and forth in the horizontal plane can be regarded as simplifying the drive connecting rod 13, the driven connecting rod 14 and the grab material piece 12 into two-dimensional line segments or curves. Then they can swing back and forth in the same horizontal plane. Here, the horizontal plane does not necessarily have to be a plane that is strictly 0 degrees with the horizontal plane. Considering actual errors, the horizontal plane can be understood as a plane that has an included angle with the horizontal direction of within 5 degrees.

[0033] Continuing as shown in Figure 4 The drive connecting rod 13 includes a first extension 131 and a second extension 132 connected in sequence from the mounting piece 11 to the grab material piece 12. It should be noted that the utility model embodiment divides the drive connecting rod 13 into the first extension 131 and the second extension 132, which means that the drive connecting rod 13 is roughly divided into two regions in appearance, rather than being segmented. That is, the first extension 131 and the second extension 132 can be integrally formed or separately formed and spliced.

[0034] As shown in Figure 4 The extension direction of the first extension 131 and the extension direction of the second extension 132 form a first preset angle. It can be understood that the extension direction of the first extension 131 represents the length direction of the first extension 131, which is also the maximum dimension direction of the first extension 131 in a three-dimensional coordinate system. In Figure 4In this diagram, L1 represents the extending direction of the first extension 131; similarly, L2 represents the extending direction of the second extension 132. That is, ignoring the thickness of the first extension 131 and the second extension 132, the first extension 131 and the second extension 132 are respectively considered as a straight line, for example... Figure 4 L1 and L2, with the intersection of the two lines as the starting point, the angle between the two lines is the first preset angle, for example... Figure 4 The size of α in the equation. In this way, the total length between the two ends of the drive link 13 is reduced, resulting in a smaller swing radius. There is no need to reserve a large space for the swing of the drive link 13, which reduces the length and / or width of the gripping assembly 1, and is conducive to further reducing the volume of the fork assembly 10.

[0035] Continue as Figure 4 As shown, the driven link 14 includes a third extension 141 and a fourth extension 142 sequentially connected from the mounting member 11 to the gripping member 12. The extension directions of the third extension 141 and the fourth extension 142 form a second preset angle. The structural division of the driven link 14 is the same as or similar to that of the drive link 13, and these similarities can be referenced interchangeably without further explanation. Figure 4 In this diagram, L3 represents the extension direction of the third extension 141, L4 represents the extension direction of the fourth extension 142, and β represents the second preset angle. This also reduces the total length between the two ends of the driven link 14, thereby reducing the required swing radius of the driven link 14 and further reducing the length and / or width of the gripping assembly 1.

[0036] It should be noted that the length direction of the gripping component 1 represents the direction of the maximum size of the gripping component 1 as a whole, and the width direction of the gripping component 1 represents the direction perpendicular to the length and thickness directions. In the schematic diagram of this application, N1 represents the length direction of the gripping component 1, and N2 represents the width direction of the gripping component 1.

[0037] In some embodiments, such as Figure 4 and Figure 5 As shown, the first preset angle is equal to the second preset angle, and the first extension 131 and the fourth extension 142 are parallel and equal in length. That is, the first extension 131, the second extension 132, the third extension 141, and the fourth extension 142 form a parallelogram, with the second extension 132 and the third extension 141 being parallel and equal in length. The first extension 131 and the fourth extension 142 contact and separate as the gripper 12 reciprocates. Figure 4 This indicates that the first extension 131 and the fourth extension 142 are separated from each other. Figure 5The state in which the first extension 131 and the fourth extension 142 contact each other. It can be understood that, in the state in which the first extension 131 and the fourth extension 142 contact each other, the gripping piece 12 is in the position closest to the mounting piece 11 (see Figure 3 );in the process in which the first extension 131 and the fourth extension 142 switch from contacting each other to being separated from each other, the gripping piece 12 swings towards the direction away from the mounting piece 11 to the position of extending to the lifted material box relative to the mounting piece 11 (see Figure 2 ). In this way, when the gripping piece 12 is in the position closest to the mounting piece 11, the driving link 13 can be combined with the driven link 14, and the driving link 13 and the driven link 14 have small width and length dimensions when combined, thereby reducing the width and length dimensions of the gripping assembly 1.

[0038] In some embodiments, as shown in Figure 2 and Figure 3 , the gripping piece 12 is provided with through grooves 121 at both ends in the extension direction of the gripping piece 12. The extension direction of the gripping piece 12 represents the length direction of the gripping piece 12, and is also the dimension maximum direction of the gripping piece 12 in the three-dimensional coordinate system. The through grooves 121 are located between both ends in the thickness direction of the gripping piece 12, that is, each through groove 121 penetrates one end of the gripping piece 12 in the length direction, and the thickness of the through groove 121 does not exceed the thickness of the gripping piece 12. The driving link 13 and the driven link 14 correspondingly extend into the through grooves 121 and are hinged to the gripping piece 12, that is, the upper and lower ends of one through groove 121 are hinged to the driving link 13, and the upper and lower ends of the other through groove 121 are hinged to the driven link 14. Both ends of the gripping piece 12 in the thickness direction are supported by the driving link 13 and the driven link 14, and the movement stability is good, thereby improving the carrying capacity of the gripping piece 12.

[0039] In some embodiments, as shown in Figure 2 and Figure 3 , the mounting piece 11 comprises a receiving groove 111 in communication with the outside, and one end of the driving link 13 and one end of the driven link 14 are hinged to the mounting piece 11, and the hinge points are arranged in the receiving groove 111. That is, the upper and lower ends of the receiving groove 111 are hinged to one end of the driving link 13 and one end of the driven link 14, and one end of the driving link 13 and one end of the driven link 14 hinged to the mounting piece 11 are supported by the mounting piece 11, so that the movement stability of the driving link 13 and the driven link 14 is good, thereby further improving the movement stability and carrying capacity of the gripping piece 12.

[0040] In some embodiments, as shown in Figure 2 and Figure 3As shown, the receiving groove 111 extends along the first direction. It can be understood that the extension direction of the receiving groove 111 represents the length direction of the receiving groove 111, i.e. the direction in which the maximum dimension of the receiving groove 111 in the three-dimensional coordinate system is located. In other words, the length direction of the receiving groove 111 is in the first direction. It should be noted that the first direction represents a set of parallel line extension directions rather than the extension direction of a single line. Figure 2 And Figure 3 N1 represents the first direction.

[0041] As shown in Figure 2 and Figure 3 , in the first state in which the gripping member 12 is farthest away from the mounting member 11 and the second state in which the gripping member 12 is closest to the mounting member 11, the extension direction of the gripping member 12 is along the first direction. It can be understood that Figure 2 represents the first state in which the gripping member 12 is farthest away from the mounting member 11, Figure 3 represents the second state in which the gripping member 12 is closest to the mounting member 11. That is, the gripping member 12 always extends along the first direction during the swinging process, so that the gripping member 12 always supports the container along the first direction after extending out relative to the mounting member 11, which is beneficial to maintaining the position accuracy of the container and reducing the possibility of affecting the carrying efficiency due to the tilting of the container.

[0042] In some embodiments, as shown in Figure 3 and Figure 5 , in the second state, at least part of at least one of the driving link 13, the driven link 14 and the gripping member 12 is located in the receiving groove 111. That is, in the second state, it can be that the driving link 13, the driven link 14 and the gripping member 12 are all located in the receiving groove 111, or it can be that the combination of the driving link 13, the driven link 14 and the gripping member 12 is located in the receiving groove 111, for example, one or two of the driving link 13, the driven link 14 and the gripping member 12 are located in the receiving groove 111, or part of the driving link 13, part of the driven link 14 and part of the gripping member 12 are located in the receiving groove 111. In this way, in the second state, the combination of the driving link 13, the driven link 14 and the gripping member 12 can be stored in the space of the receiving groove 111, so that the structure is compact, the space utilization rate is high, and the width dimension of the gripping assembly 1 in the second state is reduced, which is beneficial to reducing the width dimension of the fork assembly 10.

[0043] In some embodiments, as shown in Figure 2 and Figure 4As shown, the grabbing assembly 1 further comprises a driving member 15, which is arranged on the outer surface of the mounting member 11, and a driving shaft 151 of the driving member 15 extends through the mounting member 11 into the receiving groove 111 and is hingedly connected to one end of the driving link 13. That is, the driving shaft 151 of the driving member 15 is directly hingedly connected to the driving link 13, which is simple in structure and convenient to arrange. One driving member 15 is arranged in each group, and each group of grabbing assemblies 1 can be modularly assembled and then installed into the fork assembly 10, which is convenient to improve the assembly efficiency of the fork assembly 10. Meanwhile, each group of grabbing assemblies 1 has an independent driving source, which is convenient to control the independent movement of each group of grabbing assemblies 1 to facilitate flexible operation.

[0044] As shown in Figure 2 and Figure 4 The extension direction of the driving shaft 151 is perpendicular to the first direction in which the mounting member 11 extends, so that the driving link 13, the driven link 14 and the grabbing member 12 all move in a horizontal plane parallel to the first direction. It can be understood that the extension direction of the driving shaft 151 is in the thickness direction of the mounting member 11, and the horizontal plane in which the first direction is located can be a plane composed of the length direction and the width direction of the mounting member 11. In this way, the torque borne by the driving shaft 151 is in the horizontal plane, and the load borne by the grabbing member 12 is in the vertical plane, which is beneficial to reduce the torque borne by the driving shaft 151, thereby improving the safety of the driving member 15 and prolonging the service life of the driving member 15.

[0045] It should be noted that the ground of the warehouse is generally a horizontal plane, so the vertical plane is the height plane. Of course, the ground of the warehouse may have concave-convex in some areas, that is, the horizontal plane does not require to be absolutely horizontal, and the corresponding vertical plane also does not require to be absolutely vertical, and the existence of the ground levelness error is allowed, as long as it is generally horizontal and vertical.

[0046] As shown in Figure 1 and Figure 2As shown, the utility model embodiment further provides a fork assembly 10 for installing in the carrying robot. The fork assembly 10 includes the fork body 2, at least two telescopic arms 3 and the grabbing assembly 1 of the first aspect, at least two telescopic arms 3 are arranged on the opposite two sides of the fork body 2 respectively, and the telescopic arm 3 can extend and retract relative to the fork body 2 to lift the material box from the fork body 2 outside to the fork body 2 inside or lift the material box from the fork body 2 inside to the fork body 2 outside. The mounting piece 11 of grabbing assembly 1 is fixed to telescopic arm 3 or telescopic arm 3 is mounting piece 11, in the embodiment of mounting piece 11 fixed to telescopic arm 3, mounting piece 11 is the component independent of telescopic arm 3, and the components in grabbing assembly 1 can be modularly assembled and assembled to telescopic arm 3 as a component;In the embodiment of telescopic arm 3 being mounting piece 11, the components in grabbing assembly 1 can be directly installed on telescopic arm 3 to save mounting piece 11 and reduce the number of parts to facilitate the layout. Figure 1 As shown in the schematic diagram, N1 represents the direction of grabbing material piece 12 close to and away from mounting piece 11, and N2 represents the telescopic direction of telescopic arm 3.

[0047] In some possible embodiments, as shown in Figure 1 And Figure 2 Mounting piece 11 is fixed to telescopic arm 3, and a plurality of grabbing assemblies 1 can be arranged on one telescopic arm 3 to increase the support position and support arm on one side of the material box. In order to increase the carrying efficiency, a plurality of telescopic arms 3 can also be arranged in the height direction, so that at least two material boxes can be carried at a time. In some possible embodiments, a plurality of material boxes can be stacked in the height direction to form a pile of material boxes, that is, the stacking of a plurality of material boxes does not need to use a shelf to support, and the surfaces of adjacent material boxes in the same pile of material boxes at least partially contact each other in the height direction, and a plurality of piles of material boxes can be stored in the warehouse to increase the number of material boxes that can be stored in the warehouse. In order to separate two adjacent material boxes in a pile of material boxes and realize the lifting of the target material box, a plurality of telescopic arms 3 can also be arranged in the height direction.

[0048] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A gripping assembly, characterized in that, The application relates to a grab component for a forklift, comprising: a mounting member; a grab member for grabbing goods; a driving link driven by a driving member and rotatably connected with the grab member, the driving link driving the grab member to swing back and forth in a horizontal plane to approach and move away from the mounting member; a driven link rotatably connected with the mounting member and the grab member to swing back and forth with the grab member.

2. The grasping assembly of claim 1, wherein, The driving link, the driven link and the grab member all move in a horizontal plane; the driving link comprises a first extension and a second extension connected in sequence from the mounting member to the grab member, and the extension direction of the first extension and the extension direction of the second extension form a first preset angle; the driven link comprises a third extension and a fourth extension connected in sequence from the mounting member to the grab member, and the extension direction of the third extension and the extension direction of the fourth extension form a second preset angle.

3. The grasping assembly of claim 2, wherein, The first preset angle is equal to the second preset angle, the first extension and the fourth extension are parallel, and the first extension and the fourth extension contact and separate with the swinging back and forth of the grab member.

4. The gripping assembly according to any one of claims 1-3, characterized in that, The grab member is provided with a through groove at both ends of the extension direction, the through groove is located between both ends in the thickness direction of the grab member, and the driving link and the driven link correspondingly extend into the through groove and are hinged with the grab member.

5. The gripping assembly according to any one of claims 1-3, wherein, The mounting member comprises a receiving groove in communication with the outside, one end of the driving link and one end of the driven link are hinged with the mounting member, and the hinge points are arranged in the receiving groove.

6. The grasping assembly of claim 5, wherein, The receiving groove extends along a first direction, in a first state where the grab member is farthest away from the mounting member and a second state where the grab member is closest to the mounting member, the extension direction of the grab member is along the first direction.

7. The grasping assembly of claim 6, wherein, In the second state, at least part of at least one of the driving link, the driven link and the grab member is located in the receiving groove.

8. The grasping assembly of claim 5, wherein, The grab component further comprises: a driving member arranged on the outer surface of the mounting member, a driving shaft of the driving member extending through the mounting member into the receiving groove and being hinged with one end of the driving link.

9. The grasping assembly of claim 8, wherein, The extension direction of the driving shaft is perpendicular to the first direction in which the mounting member extends, so that the driving link, the driven link and the grab member all move in a horizontal plane parallel to the first direction.

10. A fork assembly characterized by, The application further relates to a forklift comprising the grab component. The forklift comprises: a forklift body; at least two telescopic arms arranged on opposite sides of the forklift body, the telescopic arms being capable of extending and retracting relative to the forklift body; the mounting member of the grab component is fixed to the telescopic arms or the telescopic arms are the mounting member.

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