CN220537426U - Fork device and stacker - Google Patents

Abstract

The embodiment of the application discloses a fork device and stacker. The fork device includes: at least one pair of forks; a drive assembly, comprising: at least one lead screw and first driving motor, at least one pair of fork sets up in at least one lead screw, and first driving motor connects in the one end of at least one lead screw for it is rotatory in order to drive at least one pair of fork along the axial direction motion of at least one lead screw to drive at least one lead screw. Through this technical scheme, a plurality of forks in the fork device can be simultaneously by the drive assembly drive in order to realize getting of goods and put to can promote the operating efficiency of fork device. In addition, the lead screw in the fork device is used for realizing transmission to the fork, the lead screw transmission has higher precision and higher transmission efficiency, and the lead screw does not need to occupy larger installation space in the fork device, thereby being beneficial to further improving the overall performance of the fork device.

Description

Fork device and stacker

Technical Field

The present application relates to the field of mechanical equipment technology, and more particularly, to a fork device and stacker.

Background

In the technical field of industry, a fork device is a common material handling device, and can be flexibly applied to various industries such as storage, ports and docks, railways, automobile manufacturing, steel smelting, chemical industry, buildings and the like. For example, in a stereoscopic warehouse or a workshop, a stacker is generally provided, which travels back and forth in a aisle of the stereoscopic warehouse, stores a load located at a lane crossing in a cargo compartment of a pallet, or takes out the load in the cargo compartment to transport the load to the lane crossing. The stacker is generally provided with a fork device, and the fork device can be used for taking and placing cargoes. The performance of fork device can influence the performance of stacker to a great extent, and then influences cargo handling efficiency.

In view of this, how to improve the performance of the fork device is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a fork device and a stacker, which have better performance.

In a first aspect, there is provided a fork assembly comprising: at least one pair of forks; a drive assembly, comprising: at least one lead screw and first driving motor, at least one pair of fork sets up in at least one lead screw, and first driving motor connects in the one end of at least one lead screw for it is rotatory in order to drive at least one pair of fork along the axial direction motion of at least one lead screw to drive at least one lead screw.

Through the technical scheme of this application embodiment, fork device includes at least a pair of fork, and every can include two forks in pairs to the fork, and a plurality of forks in this fork device can be simultaneously by the drive assembly drive in order to realize getting of goods and put to can promote fork device's operating efficiency. In addition, at least one pair of forks in the fork device is arranged on at least one screw rod, the at least one screw rod is used for realizing transmission of the at least one pair of forks, screw rod transmission has higher precision and higher transmission efficiency, and the screw rod does not occupy larger installation space in the fork device, so that the overall performance of the fork device is further improved.

In some possible embodiments, the at least one screw comprises: first lead screw and second lead screw, at least a pair of fork includes: the first fork and the second fork, the first fork sets up in first lead screw, and the second fork sets up in the second lead screw, and the axial of first lead screw and second lead screw is on a parallel with same direction, and first lead screw and second lead screw are configured to can rotate in order to drive first fork and second fork along opposite direction motion.

Through the technical scheme of the embodiment, the fork device can comprise a pair of forks consisting of a first fork and a second fork, the first fork and the second fork can move along opposite directions under the drive of the first screw rod and the second screw rod, namely, the first fork and the second fork can be mutually close to or mutually away from each other, and the center distance between the first fork and the second fork can be adjusted, so that the fork device can be applied to a carrying task of which the center distance of the goods needs to be adjusted, the application flexibility of the fork device is improved, the application scene of the fork device is enlarged, and the overall performance of the fork device is further improved.

In some possible embodiments, the first screw and the second screw are threaded in opposite directions, and the first screw and the second screw rotate in the same direction to drive the first fork and the second fork to move in opposite directions.

Through the technical scheme of the embodiment, the first screw rod and the second screw rod are conveniently driven by the same first driving motor, so that the first screw rod and the second screw rod rotate in the same direction. Further, the screw thread direction of first lead screw and second lead screw is opposite, therefore, under the condition that first lead screw and second lead screw rotate along the same direction, first fork and second fork that set up in this first lead screw and second lead screw can follow opposite direction motion, realize that the centre-to-centre spacing between first fork and the second fork is adjustable. According to the technical scheme, the plurality of screw rods can be driven by the driving motors with a small number, and the space occupied by the driving motors in the fork device is reduced on the basis of realizing the adjustable center distance among the plurality of screw rods, so that the weight and the volume of the fork device are reduced.

In some possible embodiments, the pitch of the first and second lead screws is the same.

Through the technical scheme of this embodiment, first fork and second fork can reverse constant speed motion to be convenient for adjust the distance between this first fork and the second fork, and be convenient for get through this first fork and second fork and put and carry the goods that the distance is different, promote the performance and the handling efficiency of fork device.

In some possible embodiments, the first screw and the second screw are connected to both sides of the first driving motor in the same direction.

Through the technical scheme of this embodiment, first lead screw and second lead screw are connected in same first driving motor, can be driven by same first driving motor, are favorable to reducing the quantity of first driving motor in the fork device, reduce this first driving motor required occupation space and then reduce the weight and the volume of fork device. Further, the first driving motor is arranged between the first screw rod and the second screw rod, so that the first driving motor is also arranged between the first fork and the second fork, and the space between the first fork and the second fork can be utilized to set the first driving motor without occupying other space additionally, thereby being beneficial to further reducing the whole volume of the fork device.

In some possible embodiments, the central axes of the first and second lead screws are collinear.

Through the technical scheme of this embodiment, can control first fork and the second fork that is located on first lead screw and the second lead screw along same rectilinear movement for this first fork and second fork can realize getting neatly to a plurality of goods and put, promotes the regularity of goods in the packing cupboard, thereby further promotes the performance of fork device.

In some possible embodiments, the drive assembly further comprises: the planetary reducer, first driving motor passes through planetary reducer and connects in the one end of at least one lead screw.

Through the technical scheme of the embodiment, the planetary reducer can be arranged between the first driving motor and at least one screw rod, so that the rotating speed of the first driving motor can be reduced while enough torque is provided for the at least one screw rod to drive the at least one screw rod to rotate, and the power consumption of the first driving motor can be reduced to reduce the overall power consumption of the fork device.

In some possible embodiments, the drive assembly further comprises: the first driving motor is connected to one end of at least one screw rod through the coupler.

Through the technical scheme of the embodiment, the coupler is arranged between the first driving motor and the screw rod, the coupler can compensate offset (including axial offset, radial offset, angular offset or comprehensive offset) between the torque output end of the first driving motor and the screw rod due to inaccurate manufacturing and installation, deformation or thermal expansion during working and other reasons, and can play roles of relieving impact, absorbing vibration and the like on connection between the first driving motor and the screw rod, and the connection reliability between the first driving motor and the screw rod is improved so as to further improve the performance of the fork device.

In some possible embodiments, the drive assembly further comprises: the screw rod fixing seat is used for fixing one end of at least one screw rod close to the first driving motor.

Through the technical scheme of this embodiment, the screw rod is its torque receiving end in the one end that is close to first driving motor, sets up the screw rod fixing base in the torque receiving end department of this screw rod, is favorable to promoting the stability of screw rod, reduces the screw rod and rocks the torque loss that causes, promotes screw rod to fork driven stability and reliability to be favorable to promoting fork device's comprehensive properties.

In some possible embodiments, the drive assembly further comprises: the screw rod supporting seat is used for supporting one end, far away from the first driving motor, of at least one screw rod.

Through the technical scheme of this embodiment, the one end that the lead screw was kept away from in first driving motor can be supported by the lead screw supporting seat to can reduce the one end that this lead screw was kept away from in first driving motor and take place crooked possibility, further promote the rotatory stability and the reliability of lead screw, thereby be favorable to promoting fork device's comprehensive properties.

In some possible embodiments, the fork device further comprises: a slide rail extending along the axial direction of at least one screw rod; the sliding block is arranged on the sliding rail, and at least one pair of forks slide on the sliding rail along the axial direction of at least one screw rod through the sliding block.

According to the technical scheme, the fork device can guide the movement direction of at least one pair of forks by using the guide piece of the slide rail and the slide block as the at least one pair of forks, and the embodiment is easy to realize in the fork device and can not generate larger friction resistance to the movement of the forks, so that the carrying response speed of the fork device to cargoes is improved, and the overall performance of the fork device is improved.

In some possible embodiments, the fork device comprises: the two sliding rails are distributed on two sides of the whole of the at least one screw rod.

In the technical scheme of the embodiment, the fork device is provided with two sliding rails, and the two sliding rails can play a more stable supporting and guiding role on at least one pair of forks. In addition, these two slide rails set up in the both sides of at least one lead screw, and the lead screw drives the fork between two slide rails, can promote the drive validity of lead screw to the fork for the fork can be between two slide rails steady motion, thereby further promote fork device's wholeness ability.

In some possible embodiments, the fork device further comprises: the first limiting block and the second limiting block; the first limiting block and the second limiting block are respectively arranged at two ends of the sliding rail and used for limiting the sliding of at least one pair of forks on the sliding rail.

Through the technical scheme of this embodiment, set up first stopper and second stopper at the both ends of slide rail, can control the sliding travel of fork on the slide rail, this fork can not break away from the slide rail and cause the trouble of fork device, is favorable to promoting the reliability of use of fork device.

In some possible embodiments, the fork device further comprises a sensor for detecting the position of at least one pair of forks in the fork device.

Through the technical scheme of this embodiment, set up the sensor in fork device, be favorable to detecting the motion position condition of fork in fork device through this sensor to carry out relevant control to this fork, reduce the possibility that the fork breaks down, in order to further promote the operational reliability of fork device.

In some possible embodiments, the fork device further comprises: the at least one pair of second driving motors are in one-to-one correspondence with the at least one pair of forks, and the second driving motors are used for driving the forks to stretch in the extending direction.

Through the technical scheme of this embodiment, the fork in the fork device can stretch out and draw back under the effect of second driving motor, is favorable to this fork to the convenient getting of goods and puts, and is favorable to reducing the required space volume that occupies of the fork device that this fork is located, is convenient for deposit and operation of this fork device under scene such as storehouse.

In some possible embodiments, each of the at least one pair of forks comprises: the second driving motor is connected to the at least two fork arms and used for driving the at least two fork arms to stretch in the extending direction.

Through the technical scheme of this embodiment, the fork includes two at least fork arms, and this two at least fork arms can promote the stability of getting to the goods and put, and the second drive motor can drive every fork arm in these two at least fork arms and stretch out and draw back in the extending direction to be favorable to promoting this two at least fork arms and get the convenience of putting to the goods, thereby be favorable to promoting the wholeness ability of fork device.

In a second aspect, there is provided a stacker comprising: a frame; and a fork device of the first aspect or any possible implementation manner of the first aspect, the fork device being arranged on the frame.

In some possible embodiments, a fork device is used to pick up the battery.

Through the technical scheme of this application embodiment, fork device includes at least a pair of fork, and every can include two forks in pairs to the fork, and a plurality of forks in this fork device can be simultaneously by the drive assembly drive in order to realize getting of goods and put to can promote fork device's operating efficiency. In addition, at least one pair of forks in the fork device is arranged on at least one screw rod, the at least one screw rod is used for realizing transmission of the at least one pair of forks, screw rod transmission has higher precision and higher transmission efficiency, and the screw rod does not occupy larger installation space in the fork device, so that the overall performance of the fork device is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic block diagram of a pallet fork assembly according to one embodiment of the present disclosure;

FIG. 2 is another schematic block diagram of a fork assembly as disclosed in one embodiment of the present application;

FIG. 3 is another schematic block diagram of a fork assembly disclosed in an embodiment of the present application;

FIG. 4 is a schematic perspective view of a fork assembly according to one embodiment of the present disclosure;

FIG. 5 is a schematic top view of the fork assembly of FIG. 4;

FIG. 6 is another schematic perspective view of a fork assembly as disclosed in one embodiment of the present application;

FIG. 7 is a schematic top view of the fork assembly of FIG. 6;

FIG. 8 is another schematic perspective view of a fork assembly as disclosed in one embodiment of the present application;

FIG. 9 is a schematic top view of the fork assembly of FIG. 8;

Fig. 10 is a schematic structural view of a stacker disclosed in an embodiment of the present application.

In the drawings, the drawings are not drawn to scale.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: there are three cases, a, B, a and B simultaneously. In this application, the character "/" generally indicates that the associated object is an or relationship.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

The application relates to a fork device and stacker. The fork device can comprise a driving piece and a fork, wherein the fork can be a mechanical arm and other structures. The fork can be driven by the driving piece, thereby realizing the functions of picking and placing cargoes and the like. The stacker is used as important hoisting and transporting equipment in a warehouse or a workshop, and can utilize a fork device to grab, transport and stack cargoes at the warehouse or the workshop.

In some related art, only a single fork is configured in one fork device, and the efficiency of picking and placing the goods by the single fork is low, so that the handling efficiency of the goods in the warehouse or the processing efficiency of the goods in the manufacturing line can be affected. In addition, in some implementations, the fork device generally uses a chain and a gear that cooperate with each other to implement the transmission of the fork, where the chain and the gear occupy a large space, and the position control accuracy for the fork is low.

In view of this, the present application provides a fork apparatus comprising: at least one pair of forks and a drive assembly, wherein the drive assembly comprises: at least one lead screw and first driving motor, at least one pair of fork sets up in at least one lead screw, and first driving motor connects in the one end of at least one lead screw for it is rotatory in order to drive at least one pair of fork along the axial direction motion of this at least one lead screw to drive this at least one lead screw. In this embodiment, the fork device includes at least one pair of forks, each pair of forks may include two forks in a pair, and a plurality of forks in the fork device can be simultaneously driven by the driving assembly to achieve picking and placing of the goods, thereby improving the operation efficiency of the fork device. In addition, at least one pair of forks in the fork device is arranged on at least one screw rod, the at least one screw rod is used for realizing transmission of the at least one pair of forks, screw rod transmission has higher precision and higher transmission efficiency, and the screw rod does not occupy larger installation space in the fork device, so that the overall performance of the fork device is further improved.

The fork device and the stacker with the fork device can be applied to various scenes such as storage, ports and docks, railways, automobile manufacturing, iron and steel smelting, chemical industry, buildings and the like. By way of example and not limitation, the fork device and stacker may be applied to the field of batteries, for example, in battery manufacturing lines for handling battery modules in battery manufacturing lines. For another example, the fork device and the stacker can also be applied to a power exchange station for realizing the transportation of batteries between a power exchange vehicle and a battery compartment.

Fig. 1 illustrates a schematic block diagram of a pallet fork assembly 10 provided in an embodiment of the present application.

As shown in fig. 1, the fork apparatus 10 includes: at least one pair of forks 100 and a drive assembly 200, wherein the drive assembly 200 comprises: at least one screw 210 and a first driving motor 220, at least one pair of forks 100 are disposed on the at least one screw 210, and the first driving motor 220 is connected to one end of the at least one screw 210 for driving the at least one screw 210 to rotate so as to drive the at least one pair of forks 100 to move along the axial direction of the at least one screw 210.

By way of example, a pair of forks 100 in a fork assembly 10 is schematically illustrated in fig. 1, the pair of forks 100 comprising two separate forks 100. It will be appreciated that where the fork apparatus 10 includes a plurality of pairs of forks 100, each pair of forks 100 may include two separate forks 100 as shown in fig. 1.

Optionally, each fork 100 may include multiple fork arms to facilitate flexible and stable picking and placing of the cargo. As an example, two fork arms disposed parallel to each other may be included in each of the forks 100 shown in fig. 1.

In this embodiment, the pallet fork 100 may be driven by the driving assembly 200, the driving assembly 200 may include a first driving motor 220 and a screw rod 210, one end of the screw rod 210 is connected to the first driving motor 220, and the first driving motor 220 may drive the screw rod 210 to rotate, so as to drive the pallet fork 100 to move along the axial direction of the screw rod 210.

Specifically, the screw 210 may be a rod-shaped member provided with threads, and the fork 100 may be disposed on the screw 210 through a nut, in which threads matching with the screw 210 are also provided, and when the screw 210 rotates, the nut may drive the fork 100 to move along the axial direction of the screw 210. Alternatively, by way of example and not limitation, the assembly formed by the screw 210 and the nut together may be a ball screw assembly, i.e., balls are provided in the nut, thereby reducing friction generated by movement of the nut over the screw 210.

Alternatively, in embodiments of the present application, the drive assembly 200 may include one or more lead screws 210 and one or more first drive motors 220. Where the fork assembly 10 includes one first drive motor 220, the ends of the one or more lead screws 210 may be simultaneously connected to the same first drive motor 220. In the case that the fork apparatus 10 includes a plurality of first driving motors 220, the plurality of screw rods 210 may be connected to the plurality of first driving motors 220 in a one-to-one correspondence, respectively.

In some examples, where the drive assembly 200 includes one lead screw 210, at least one pair of forks 100 may be simultaneously disposed on the one lead screw 210, with the one lead screw 210 simultaneously transmitting the at least one pair of forks 100.

In other examples, as shown in fig. 1, the drive assembly 200 may include two screw rods 210 in pairs, with two separate forks 100 of each pair of forks 100 being disposed on the two screw rods 210, respectively, the two screw rods 210 transmitting the two forks 100, respectively.

In a third example, the driving assembly 200 may further include a plurality of pairs of screw rods 210, the pairs of screw rods 210 are in one-to-one correspondence with the pairs of forks 100, two forks 100 of each pair of forks 100 are correspondingly disposed on two screw rods 210 of a pair of screw rods 210, and the pair of screw rods 210 drives the pair of forks 100 corresponding thereto.

Through the technical solution of the present embodiment, the fork device 10 includes at least one pair of forks 100, each pair of forks 100 may include two forks 100 in pairs, and a plurality of forks 100 in the fork device 10 can be driven by the driving assembly 200 simultaneously to achieve picking and placing of goods, so that the operation efficiency of the fork device 10 can be improved. In addition, at least one pair of forks 100 in the fork device 10 is disposed on at least one screw rod 210, and the at least one screw rod 210 is used for realizing transmission of the at least one pair of forks 100, the screw rod transmission has higher precision and higher transmission efficiency, and the screw rod 210 does not occupy larger installation space in the fork device 10, which is beneficial to further improving the overall performance of the fork device 10.

Fig. 2 illustrates another schematic block diagram of the fork assembly 10 provided in accordance with an embodiment of the present application.

As shown in fig. 2, in the embodiment of the present application, the at least one screw 210 includes: a first screw 211 and a second screw 212, the at least one pair of forks 100 comprising: the first fork 110 and the second fork 120, wherein the first fork 110 is disposed on the first screw rod 211, the second fork 120 is disposed on the second screw rod 212, the axial directions of the first screw rod 211 and the second screw rod 212 are parallel to the same direction, and the first screw rod 211 and the second screw rod 212 rotate to drive the first fork 110 and the second fork 120 to move along opposite directions.

Specifically, the fork device 10 provided in the embodiments of the present application may include a first fork 110, a second fork 120, a first screw 211, and a second screw 212. The first screw rod 211 may be rotated clockwise or counterclockwise about its central axis by the first driver 220, thereby driving the first fork 110 to reciprocate in the axial direction of the first screw rod 211. Similarly, the second screw 212 may be rotated clockwise or counterclockwise about its central axis by the first driver 220, thereby reciprocating the second fork 120 in the axial direction of the second screw 212.

As shown in fig. 2, the axial directions of the first screw 211 and the second screw 212 are parallel to the same direction. When the first driving motor 220 drives the first screw rod 211 and the second screw rod 212 to rotate, the first fork 110 can move along the first movement direction x1 under the driving of the first screw rod 211, and the second fork 120 can move along the second movement direction x2 under the driving of the second screw rod 212, wherein the first movement direction x1 and the second movement direction x2 are two opposite movement directions parallel to the axial directions of the first screw rod 211 and the second screw rod 212. The first fork 110 and the second fork 120 may be driven by the first screw 211 and the second screw 212 to move away from each other.

Alternatively, the first fork 110 may be driven by the first screw rod 211 to move along the second movement direction x2, and the second fork 120 may be driven by the second screw rod 212 to move along the first movement direction x1, where the first fork 110 and the second fork 120 may be driven by the first screw rod 211 and the second screw rod 212 to move close to each other.

Through the technical scheme of the embodiment of the application, the fork device 10 may include a pair of forks 100 composed of a first fork 110 and a second fork 120, the first fork 110 and the second fork 120 can move along opposite directions under the driving of a first screw rod 211 and a second screw rod 212, that is, the first fork 110 and the second fork 120 can be close to each other or deviate from each other, and the center distance between the first fork 110 and the second fork 120 is adjustable, so that the fork device 10 can be applied to a carrying task of which the center distance of goods needs to be adjusted, thereby improving the application flexibility of the fork device 10, expanding the application scene of the fork device 10, and further improving the overall performance of the fork device 10.

On the basis of the embodiment shown in fig. 2, fig. 3 shows another schematic structural diagram of the fork device 10 provided in the embodiment of the present application.

As shown in fig. 3, the screw directions of the first screw rod 211 and the second screw rod 212 are opposite, and the first screw rod 211 and the second screw rod 212 are rotated in the same direction to drive the first fork 110 and the second fork 120 to move in opposite directions.

By way of example and not limitation, in the example shown in fig. 3, the threads in the first screw 211 may be right-handed threads and the threads in the second screw 212 may be left-handed threads. Alternatively, in an alternative example, the threads in the first screw 211 may be left-handed threads and the threads in the second screw 212 may be right-handed threads.

As shown in fig. 3 (a), the first screw rod 211 and the second screw rod 212 are both rotated in the first rotation direction r1, the first fork 110 moves in the first movement direction x1, the second fork 120 moves in the second movement direction x2, and the first fork 110 and the second fork 120 may be moved away from each other by the first screw rod 211 and the second screw rod 212.

As shown in fig. 3 (b), the first screw rod 211 and the second screw rod 212 are rotated in a second rotation direction r2 opposite to the first rotation direction r1, the first fork 110 moves in a second movement direction x2, and the second fork 120 moves in the first movement direction x1, and at this time, the first fork 110 and the second fork 120 may move close to each other under the driving of the first screw rod 211 and the second screw rod 212.

Specifically, in the present embodiment, the first screw 211 and the second screw 212 are conveniently driven by the same first driving motor 220 such that the first screw 211 and the second screw 212 rotate in the same direction. Further, the screw thread directions of the first screw rod 211 and the second screw rod 212 are opposite, so that the first fork 110 and the second fork 120 provided to the first screw rod 211 and the second screw rod 212 can move in opposite directions under the condition that the first screw rod 211 and the second screw rod 212 rotate in the same direction, thereby realizing the adjustable center distance between the first fork 110 and the second fork 120. The technical scheme of the embodiment can drive a plurality of screw rods by using a small number of driving motors, and is beneficial to reducing the space occupied by the driving motors in the fork device 10 and further reducing the weight and the volume of the fork device 10 on the basis of realizing the adjustable center distance between the screw rods.

It will be appreciated that, in addition to the embodiment shown in fig. 3, the first and second forks 110 and 120 are driven by the first and second screw rods 211 and 212 having opposite screw directions, respectively, so as to implement the center distance adjustment between the first and second forks 110 and 120, the screw directions of the first and second screw rods 211 and 212 may be the same, and the two screw rods may be driven by the driving motor to rotate in opposite directions so as to drive the first and second forks 110 and 120 to move in opposite directions, so as to implement the center distance adjustment between the first and second forks 110 and 120.

Alternatively, in some embodiments, the pitch of the first screw 211 and the second screw 212 may be the same.

Specifically, the pitch in the screw rod refers to the axial distance between two adjacent threads in the screw rod threads. In the case where the first and second screw rods 211 and 212 are driven at the same rotation speed by the same first driving motor 220, pitches of the first and second screw rods 211 and 212 are the same, and the first and second forks 110 and 120 provided on the first and second screw rods 211 and 212 can be moved in opposite directions at the same movement speed.

Through the technical scheme of this embodiment, the first fork 110 and the second fork 120 can reverse constant velocity motion to be convenient for adjust the distance between this first fork 110 and the second fork 120, and be convenient for get through this first fork 110 and the second fork 120 put and carry the goods that the distance is different, promote the performance and the handling efficiency of fork device 10.

With continued reference to fig. 2 and 3, in some embodiments, the first and second lead screws 211 and 212 are connected to both sides of the first driving motor 220 in the same direction.

Specifically, in this embodiment, the first and second screw rods 211 and 212 are connected to both sides of the first driving motor 220 in a first direction parallel to the axial direction of the first and second screw rods 211 and 212. The ends of the first and second screw rods 211 and 212 in the axial direction are connected to both sides of the first driving motor 220, respectively.

Through the technical scheme of the embodiment, the first screw rod 211 and the second screw rod 212 are connected to the same first driving motor 220, and can be driven by the same first driving motor 220, so that the number of the first driving motors 220 in the fork device 10 is reduced, the space occupied by the first driving motors 220 is reduced, and the weight and the volume of the fork device 10 are further reduced. Further, the first driving motor 220 is disposed between the first screw rod 211 and the second screw rod 212, and thus is also disposed between the first fork 110 and the second fork 120, and the space between the first fork 110 and the second fork 120 can be utilized to dispose the first driving motor 220 without occupying additional space, which is beneficial to further reducing the overall volume of the fork device 10.

Alternatively, as shown in fig. 2 and 3, the central axes of the first and second screw rods 211 and 212 may be positioned on the same straight line.

As an example, in the case where the first screw 211 and the second screw 212 are connected to the same first driving motor 220, the first screw 211 and the second screw 212 may be axisymmetrically distributed at both sides of the first driving motor 220.

Through the technical scheme of this embodiment, can control the first fork 110 and the second fork 120 that are located on first lead screw 211 and second lead screw 212 along same rectilinear motion for this first fork 110 and second fork 120 can realize getting neatly putting a plurality of goods, promotes the regularity of goods in the packing cupboard, thereby further promotes the performance of fork device 10.

Fig. 4 illustrates a schematic perspective view of the fork assembly 10 provided in accordance with an embodiment of the present application. Fig. 5 shows a schematic top view of the fork assembly 10 of fig. 4.

As shown in fig. 4 and 5, in the fork apparatus 10, the driving assembly 200 may further include: the planetary reducer 230, and the first driving motor 220 is connected to one end of at least one screw 210 through the planetary reducer 230.

Specifically, in the embodiment of the present application, the first driving motor 220 does not directly drive the at least one screw 210 to rotate, but is connected to the at least one screw 210 through the planetary reducer 230, i.e., the first driving motor 220 is connected to the planetary reducer 230, and the planetary reducer 230 is connected to one end of the at least one screw 210. During operation of the fork assembly 10, the first drive motor 220 may drive the planetary reducer 230 to operate, and the planetary reducer 230 outputs torque to drive the at least one lead screw 210 coupled thereto to rotate.

The planetary reducer 230 serves as a power transmission mechanism that can reduce the number of revolutions of the first drive motor 220 to a desired number of revolutions by using a speed converter of a gear, and increase the output torque. Through the technical solution of the embodiment of the present application, the planetary reducer 230 may be disposed between the first driving motor 220 and the at least one screw rod 210, so that the rotational speed of the first driving motor 220 may be reduced while providing a torque large enough to the at least one screw rod 210 to drive the at least one screw rod 210 to rotate, thereby being beneficial to reducing the power consumption of the first driving motor 220 to reduce the overall power consumption of the fork apparatus 10.

Alternatively, the driving assembly 200 may include only one planetary reducer 230, and the one planetary reducer 230 may have at least one torque output end, which may correspond to at least one screw 210 one by one, that is, in this embodiment, in the case that the driving assembly 200 includes a plurality of screws 210, the one planetary reducer 230 may simultaneously drive the plurality of screws 210 to rotate under the action of the first driving motor 220.

With continued reference to fig. 4 and 5, in some embodiments, the drive assembly 200 may further include: the coupling 240, the first driving motor 220 is connected to one end of at least one screw 210 through the coupling 240.

Alternatively, in case the driving assembly 200 includes both the planetary reducer 230 and the coupling 240, the first driving motor 220 is connected to the planetary reducer 230, the planetary reducer 230 is connected to the coupling 240, the coupling 240 is connected to the end of the screw 210, and the first driving motor 220 is connected to the screw 210 through the planetary reducer 230 and the coupling 240.

Alternatively, in case the driving assembly 200 does not include the planetary reducer 230, the first driving motor 220 may be connected to the coupler 240, the coupler 240 is connected to the end of the screw 210, and the first driving motor 220 is connected to the screw 210 through the coupler 240.

It will be appreciated that in the case where the driving assembly 200 includes a plurality of screw rods 210, the driving assembly 200 may include a plurality of couplings 240 in one-to-one correspondence with the plurality of screw rods 210, and each screw rod 210 may be connected to the planetary reducer 230 through a corresponding coupling 240 or directly connected to the first driving motor 220.

In this embodiment, a coupling 240 may be used to firmly couple the output end of the planetary reducer 230 or the first driving motor 220 with the screw 210, the coupling 240 may transmit the torque output from the planetary reducer 230 or the first driving motor 220 to the screw, and the coupling 240 may be capable of rotating along with the screw 210.

Through the technical scheme of the embodiment, the coupling 240 is arranged between the first driving motor 220 and the screw rod 210, the coupling 240 can compensate offset (including axial offset, radial offset, angular offset or comprehensive offset) between the torque output end of the first driving motor 220 and the screw rod due to inaccurate manufacturing and installation, deformation or thermal expansion during working and the like, and the coupling 240 can play roles of relieving impact, absorbing vibration and the like on connection between the two, so that the connection reliability between the two is improved to further improve the performance of the fork device 10.

With continued reference to fig. 4 and 5, in some embodiments, the drive assembly 200 may further include: the screw fixing base 250 is used for fixing one end of the at least one screw 210 close to the first driving motor 220.

Alternatively, in case the driving assembly 200 includes a plurality of screw rods 210, the driving assembly 200 may include a plurality of screw rod holders 250 in one-to-one correspondence with the plurality of screw rods 210, and each screw rod holder 250 may serve to fix the screw rod 210 corresponding thereto.

In particular, in this embodiment, the screw fixing base 250 may be used to constrain the degree of freedom of the screw 210 in the axial direction and the degree of freedom in the radial direction, and the screw fixing base 250 may include bearings, locking members, etc. to lock the movement of the screw 210 in the axial direction and support and constrain the screw 210 in the radial direction.

Alternatively, in case the driving assembly 200 includes the coupling 240, the screw fixing seat 250 may be disposed at one side of the coupling 240 for fixedly coupling to the screw 210 of the coupling 240.

Through the technical scheme of this embodiment, the screw rod 210 is the torque receiving end near one end of the first driving motor 220, and the screw rod fixing seat 250 is arranged at the torque receiving end of the screw rod 210, so that stability of the screw rod 210 is improved, torque loss caused by shaking of the screw rod 210 is reduced, stability and reliability of the screw rod 210 on transmission of the fork 100 are improved, and comprehensive performance of the fork device 10 is improved.

In some embodiments, the drive assembly 200 may further include: the screw support 260, the screw support 260 is used for supporting one end of the at least one screw 210 far from the first driving motor 220.

Alternatively, in case the driving assembly 200 includes a plurality of screw rods 210, the driving assembly 200 may include a plurality of screw rod supporting seats 260 in one-to-one correspondence with the plurality of screw rods 210, and each screw rod supporting seat 260 may serve to support the screw rod 210 corresponding thereto.

In particular, in this embodiment, the screw support 260 may be used to constrain the degree of freedom of the screw 210 in the radial direction, and the screw support 260 may include bearings or the like to radially support and constrain the screw 210.

The lead screw support block 260 has a lower structural complexity and thus lower manufacturing cost relative to the structure of the lead screw fixing block 250, thereby reducing the overall cost of the drive assembly 200 and the fork assembly 10.

Through the technical scheme of the embodiment, the end of the screw rod 210 far away from the first driving motor 220 can be supported by the screw rod supporting seat 260, so that the possibility that the end of the screw rod 210 far away from the first driving motor 220 is bent can be reduced, the stability and reliability of the rotation of the screw rod 210 are further improved, and the comprehensive performance of the fork device 10 is improved.

Alternatively, in some alternative embodiments, in addition to the screw support seat 260, the end of the screw 210 away from the first driving motor 220 may be provided with screw fixing seats 250, that is, two screw fixing seats 250 are respectively disposed at two ends of the screw 210 to fix and support the screw 210.

Fig. 6 illustrates another schematic perspective view of the fork assembly 10 provided in accordance with an embodiment of the present application. Fig. 7 shows a schematic top view of the fork assembly 10 of fig. 6.

As shown in fig. 6 and 7, in the embodiment of the present application, the fork device 10 may further include: the guide rail 310 and the slider 320, the guide rail 310 may extend along the axial direction of the at least one screw 210, the slider 320 is disposed on the guide rail 310, and the at least one pair of forks 100 may slide on the guide rail 310 along the axial direction of the at least one screw 210 through the slider 320.

Specifically, in this embodiment, the slide rail 310 and the slider 320 may serve as guides for the fork 100, thereby guiding the fork 100 to slide in the axial direction of the screw 210. One or more sliding blocks 320 may be provided on each fork 100 of the at least one pair of forks 100, which is advantageous for providing a stable and reliable guiding function for the forks 100 by the cooperation of the sliding blocks 320 with the sliding rails 310.

Alternatively, as shown in fig. 6 and 7, the plurality of forks 100 in the fork apparatus 10 may share the same sliding rail 310, so that the plurality of forks 100 can move along the extending direction of the same sliding rail 310, and the movement tracks of the plurality of forks 100 may be located on the same straight line.

According to the technical scheme of the embodiment, the fork device 10 can guide the movement direction of at least one pair of forks 100 by utilizing the guide members of the slide rail 310 and the slide block 320 as at least one pair of forks 100, and the embodiment is easy to realize in the fork device 10 without generating larger friction resistance to the movement of the forks 100, so that the carrying response speed of the fork device 10 to cargoes is improved to improve the overall performance of the fork device 10.

In some related implementations, as shown in fig. 6 and 7, the fork apparatus 10 may include: the two sliding rails 310 are distributed on two sides of the whole of the at least one screw 210.

Optionally, in some embodiments, at least one screw 210 is disposed on a horizontal plane, an axial direction of the at least one screw 210 is parallel to a first direction on the horizontal plane, and two sliding rails 310 may be disposed on two sides of the at least one screw 210 in a second direction, which is parallel to the horizontal plane and perpendicular to the first direction.

It will be appreciated that where the fork apparatus 10 includes two skid rails 310, each fork 100 of at least one pair of forks 100 may be provided with one or more slides 320 that mate with each skid rail 310. Each fork 100 of the at least one pair of forks 100 may span two skid rails 310 and its corresponding lead screw 210.

In this embodiment, the fork device 10 is provided with two rails 310, and the two rails 310 can provide more stable support and guiding for at least one pair of forks 100. In addition, the two sliding rails 310 are disposed on two sides of at least one screw rod 210, the screw rod 210 drives the fork 100 between the two sliding rails 310, so that the driving effectiveness of the screw rod 210 on the fork 100 can be improved, the fork 100 can stably move between the two sliding rails 310, and the overall performance of the fork device 10 is further improved.

In addition to the above embodiments, in some alternative embodiments, the screw 210 may be disposed on one side of the two sliding rails 310 instead of being disposed in the middle of the two sliding rails 310. Alternatively, the fork assembly 10 may be provided with three or more skid rails 310. The number of the sliding rails 310 and the specific relative positional relationship between the screw 210 and the sliding rails 310 in the fork apparatus 10 are not limited in the embodiments of the present application.

With continued reference to fig. 6 and 7, the fork apparatus 10 may further include: the first limiting block 410 and the second limiting block 420 are respectively disposed at two ends of the sliding rail 310, and are used for limiting the sliding of at least one pair of forks 100 on the sliding rail 310.

Specifically, in this embodiment, the first stopper 410 and the second stopper 420 may be fixedly disposed at both ends of the sliding rail 310. In the case that the fork apparatus 10 includes a plurality of sliding rails 310, the first stopper 410 and the second stopper 420 may be fixedly disposed at both ends of each sliding rail 310.

Through the technical scheme of the embodiment, the first limiting block 410 and the second limiting block 420 are arranged at two ends of the sliding rail 310, so that the sliding travel of the fork 100 on the sliding rail 310 can be controlled, the fork 100 cannot be separated from the sliding rail 310 to cause the fault of the fork device 10, and the use reliability of the fork device 10 is improved.

Optionally, in some embodiments, as shown in fig. 6 and 7, the fork assembly 10 further includes a sensor 500, the sensor 500 being configured to detect the position of at least one pair of forks 100 in the fork assembly 10.

Alternatively, the sensor 500 may be fixedly disposed at an end region of the sliding rail 310, and when the fork 100 moves to the end position of the sliding rail 310, the sensor 500 may detect that the fork 100 is at the end position of the sliding rail 310, and at this time, the sensor 500 may generate a sensing signal to send to the control module of the fork apparatus 10 to control the first driving motor 220 to stop driving, thereby controlling the fork 100 to stop moving.

In some embodiments, the sensor 500 may be disposed near a stop (e.g., the first stop 410 and/or the second stop 420 described above) located at an end region of the sled 310 that is closer to an end of the sled 310 than the sensor 500. By sensing the position of the forks 100 by the sensor 500, the forks 100 may be brought to a stop in advance, reducing the likelihood of failure of the fork assembly 10 due to their disengagement from the skid rails 310.

In some alternative embodiments, the sensor 500 may be disposed at other positions of the fork device 10 as required to detect the movement of the fork 100 in the fork device 10, and the specific position design of the sensor 500 in the fork device 10 is not limited in the embodiments of the present application.

Through the technical scheme of this application embodiment, set up sensor 500 in fork device 10, be favorable to detecting the motion position condition of fork 100 in fork device 10 through this sensor 500 to be convenient for carry out relevant control to this fork 100, reduce the possibility that fork 100 breaks down, in order to further promote the operational reliability of fork device 10.

Fig. 8 illustrates another schematic perspective view of the fork assembly 10 provided in accordance with an embodiment of the present application. Fig. 9 shows a schematic top view of the fork assembly 10 of fig. 8.

As shown in fig. 8 and 9, in the embodiment of the present application, the fork device 10 may further include: at least one pair of second driving motors 600, the at least one pair of second driving motors 600 corresponding to the at least one pair of forks 100 one by one, the second driving motors 600 for driving the forks 100 to be telescopic in the extending direction.

Specifically, in the fork apparatus 10 provided in the embodiment of the present application, the fork 100 may be extended and contracted by the second driving motor 600. As an example, the fork 100 may include a main body and a telescopic body, and the second driving motor 600 may be disposed on the main body of the fork 100 and may be connected to the telescopic body through a transmission device (e.g., a belt transmission device, etc.), so that the telescopic body may be telescopic under the driving of the second driving motor 600 and the transmission device.

Alternatively, the extending direction of the fork 100 may be perpendicular to the axial direction of the screw 210. Both the extension direction of the fork 100 and the axial direction of the screw 210 may be parallel to the horizontal plane.

Through the technical scheme of this application embodiment, fork 100 in fork device 10 can stretch out and draw back under the effect of second driving motor 600, is favorable to this fork 100 to the convenient getting of goods and puts, and is favorable to reducing the required space volume that occupies of fork device 10 that this fork 100 is located, is convenient for deposit and operation of this fork device 10 under scene such as storehouse.

With continued reference to fig. 8 and 9, in some embodiments, each fork 100 of the at least one pair of forks 100 may include: at least two fork arms 101, and a second driving motor 600 may be connected to the at least two fork arms 101 for driving the at least two fork arms 101 to extend and retract in the extending direction.

Specifically, in this embodiment, each of the forks 100 may include at least two fork arms 101, the at least two fork arms 101 may be arranged side by side in the axial direction of the screw rod 210, and the second driving motor 600 may be connected to each of the at least two fork arms 101 so as to drive the each of the fork arms 101 to expand and contract in the extending direction.

As an example, in the embodiment shown in fig. 8 and 9, each fork 100 includes two fork arms 101, and the second drive motor 600 is connected between the two fork arms 101. Each of the fork arms 101 may include a main body arm and a telescopic arm, and the second driving motor 600 may drive the telescopic arm in each of the fork arms 101 to be telescopic in an extending direction.

Through the technical scheme of this embodiment, the fork 100 includes at least two fork arms 101, and the stability of getting and putting the goods can be promoted to these at least two fork arms 101, and the second driving motor 600 can drive in these at least two fork arms 101 every fork arm 101 stretch out and draw back in extending direction to be favorable to promoting these at least two fork arms 101 to the convenience of getting and putting the goods, thereby be favorable to promoting the wholeness ability of fork device 10.

It will be appreciated that in the embodiments shown in fig. 8 and 9, the driving assembly 200 including at least one screw 210 and the first driving motor 220, the sliding rail 310, the sliding block 320, the first limiting block 410, the second limiting block 420, and the sensor 500 may be referred to the related description of the embodiments shown in fig. 1 to 7.

As an example, as shown in fig. 8 and 9, the driving assembly 200 of the fork apparatus 10 may include: screw 210, first driving motor 220, planetary reducer 230, shaft coupling 240, screw fixing base 250 and screw support 260.

Specifically, the first driving motor 220 is connected to the planetary reducer 230, the planetary reducer 230 has two torque output ends disposed opposite to each other, and the two screw rods 210 are respectively connected to two sides of the planetary reducer 230 through the coupling 240 to be connected to the two torque output ends. Each screw 210 has a screw fixing seat 250 and a screw supporting seat 260 corresponding thereto, wherein the screw fixing seat 250 is disposed at one end of the screw 210 near the coupling 240, and the screw supporting seat 260 is disposed at one end of the screw 210 far from the coupling 240.

The two forks 100 in the fork device 10 are respectively disposed on the two screw rods 210, and the first driving motor 220 can drive the two screw rods 210 to rotate through the planetary reducer 230, so as to drive the two forks 100 to move along the axial direction of the screw rods 210. Alternatively, the two forks 100 may be moved in opposite directions, i.e., the two forks 100 may be moved closer to each other or farther from each other to achieve an adjustable center-to-center distance therebetween.

In addition to the forks 100 and the drive assembly 200, the fork assembly 10 also includes a guide member including a slide rail 310 and a slider 320. Optionally, in the fork apparatus 10, two sliding rails 310 may be disposed on two sides of the two screw rods 210, and an extending direction of each sliding rail 310 may be parallel to an axial direction of the screw rod 210, and two sliding blocks 320 may be disposed on each fork arm 101 of each fork 100 to be disposed on the two sliding rails 310 respectively. When the first driving motor 220 drives the two forks 100, the two forks 100 can be slidably moved along the two slide rails 310 by the slider 320.

The fork device 10 further includes a first stopper 410 and a second stopper 420, which may be a pair of stoppers, and are matched with the sliding rail 310 and the sliding block 320. Alternatively, the fork apparatus 10 may include four pairs of limiting blocks, where the four pairs of limiting blocks are respectively disposed on two sliding rails 310, and two pairs of limiting blocks may be disposed on each sliding rail 310, and the two pairs of limiting blocks respectively limit the sliding of the two forks 100 on the sliding rails 310.

In addition, the fork assembly 10 also includes a sensor 500 for detecting the position of the fork 100. Alternatively, the sensor 500 may be disposed in the fork assembly 10 near the stop block for detecting whether the position of the fork 100 is near the end of the skid rails 310.

The two second driving motors 600 correspondingly configured to the two forks 100 can be independently controlled to control the respective expansion and contraction of the two forks 100. The second driving motor 600 is connected between the two fork arms 101 of the fork 100 such that the distance between the two fork arms 101 is maintained.

It will be appreciated that the fork assembly 10 may further include a mounting floor, in addition to the above components, to which the above components, such as the first driving motor 220, the planetary reducer 230, the screw fixing base 250, the screw supporting base 260, the sliding rail 310, the sensor 500, and the second driving motor 600, may be fixedly mounted, so as to achieve stable mounting in the fork assembly 10.

The application also provides a stacker. Fig. 10 shows a schematic structural diagram of the stacker 1.

As shown in fig. 10, in the embodiment of the present application, the stacker 1 includes a rack 20 and the fork device 10 in any of the above embodiments, and the fork device 10 is disposed on the rack 20.

Alternatively, the frame 20 may be designed in relation to the requirements of the actual stacker 1. As an example, the frame 20 may be provided with a lifting device therein, which may be used to lift the fork device 10 in a vertical direction, thereby facilitating the handling of the stacker 1 for goods having a certain stacking height.

Optionally, the frame 20 may be configured with a chassis, maintenance platform, etc. to facilitate the associated control and manual maintenance of the fork assembly 10.

In some embodiments, the stacker 1 may be used in the field of batteries, for example, the stacker 1 may be used to handle batteries in a battery production line or a battery exchange station. The fork device 10 in the stacker 1 can be used for taking out and discharging the battery, and the stacker 1 moves so as to realize the carrying of the battery.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (17)

1. A fork assembly comprising:

at least one pair of forks (100);

a drive assembly (200), comprising: at least one screw (210) and a first driving motor (220), wherein the at least one pair of forks (100) are arranged on the at least one screw (210), the first driving motor (220) is connected to one end of the at least one screw (210) and is used for driving the at least one screw (210) to rotate so as to drive the at least one pair of forks (100) to move along the axial direction of the at least one screw (210);

Wherein the at least one screw (210) comprises: a first screw (211) and a second screw (212), the at least one pair of forks (100) comprising: first fork (110) and second fork (120), first fork (110) set up in first lead screw (211), second fork (120) set up in second lead screw (212), first lead screw (211) with the axial of second lead screw (212) is on a parallel with same direction, just first lead screw (211) with second lead screw (212) are configured to rotate in order to drive first fork (110) with second fork (120) are along opposite direction motion.

2. The fork apparatus of claim 1, wherein the first screw (211) and the second screw (212) are threaded in opposite directions, the first screw (211) and the second screw (212) rotating in the same direction to move the first fork (110) and the second fork (120) in opposite directions.

3. The fork device according to claim 1, wherein the pitch of the first screw (211) and the second screw (212) is identical.

4. The fork device according to claim 1, wherein the first screw (211) and the second screw (212) are connected to both sides of the first drive motor (220) in the same direction.

5. The fork device according to claim 1, wherein the central axes of the first screw (211) and the second screw (212) are located in the same straight line.

6. The fork apparatus of any one of claims 1 to 5, wherein the drive assembly (200) further comprises: and the first driving motor (220) is connected to one end of the at least one screw rod (210) through the planetary reducer (230).

7. The fork apparatus of any one of claims 1 to 5, wherein the drive assembly (200) further comprises: and the first driving motor (220) is connected to one end of the at least one screw rod (210) through the coupling (240).

8. The fork apparatus of any one of claims 1 to 5, wherein the drive assembly (200) further comprises: the screw rod fixing seat (250) is used for fixing one end, close to the first driving motor (220), of the at least one screw rod (210).

9. The fork apparatus of any one of claims 1 to 5, wherein the drive assembly (200) further comprises: the screw rod supporting seat (260), the screw rod supporting seat (260) is used for supporting one end of the at least one screw rod (210) far away from the first driving motor (220).

10. The fork apparatus of any one of claims 1 to 5, further comprising:

a slide rail (310) extending in an axial direction of the at least one screw (210);

and the sliding blocks (320) are arranged on the sliding rails (310), and the at least one pair of forks (100) slide on the sliding rails (310) along the axial direction of the at least one screw rod (210) through the sliding blocks (320).

11. The fork apparatus of claim 10 wherein said fork apparatus comprises: the two sliding rails (310) are respectively arranged at two sides of the whole of the at least one screw rod (210).

12. The fork apparatus of claim 10, wherein said fork apparatus further comprises: a first stopper (410) and a second stopper (420);

the first limiting block (410) and the second limiting block (420) are respectively arranged at two ends of the sliding rail (310) and are used for limiting sliding of the at least one pair of forks (100) on the sliding rail (310).

13. The fork arrangement according to any one of claims 1 to 5, further comprising a sensor (500) for detecting the position of the at least one pair of forks (100) in the fork arrangement.

14. The fork apparatus of any one of claims 1 to 5, further comprising: at least one pair of second driving motors (600), wherein the at least one pair of second driving motors (600) are in one-to-one correspondence with the at least one pair of forks (100), and the second driving motors (600) are used for driving the forks (100) to stretch in the extending direction.

15. The fork arrangement of claim 14, wherein each fork (100) of said at least one pair of forks (100) includes: and the second driving motor (600) is connected to the at least two fork arms (101) and is used for driving the at least two fork arms (101) to stretch in the extending direction.

16. A stacker, comprising: a frame; and a fork arrangement according to any one of claims 1 to 15;

the fork device is arranged on the frame.

17. The stacker of claim 16 wherein said fork assembly is adapted to pick up cells.