Pallet fork type loading system and control method thereof

Abstract

The invention relates to a fork type loading system and a control method thereof, and the fork type loading system comprises a platform assembly which is provided with a plurality of rails along the length direction of the platform assembly; the plurality of lifting fork assemblies are respectively laid on the rails, each lifting fork assembly comprises an inner fork, an outer fork and a driving part, the outer fork covers the inner fork, a plurality of inclined blocks are arranged on the inner fork at intervals, a plurality of rolling wheels are arranged on the outer fork at intervals, and the driving part is arranged on the inner fork. The idler wheel and the inclined block are matched to enable the outer fork and the inner fork to ascend and descend when the outer fork and the inner fork move relatively, the driving piece is arranged at one end of the inner fork, and a pulley assembly is arranged at the movable end of the driving piece. The pulley assembly is used for driving the outer fork to relatively move along the inner fork and providing rolling connection when the outer fork ascends and descends; the number of the chain assemblies is multiple, and the chain assemblies drive the lifting pallet fork assemblies to stretch out or draw back along the rails.

Description

Technical Field

[0001] The present invention relates to the field of loading systems, and in particular to a fork-type loading system and a control method thereof. Background Art

[0002] With the rapid development of the logistics industry, the volume of cargo transported continues to increase, and the requirements for loading and unloading efficiency are becoming increasingly stringent. Traditional loading and unloading methods can no longer meet the needs of modern logistics. Therefore, loading is achieved through loading systems. Loading systems are a system used to automatically load cargo. They are widely used in various industries to improve loading efficiency, reduce labor costs, enhance safety, and realize the automation and intelligence of logistics operations.

[0003] During operation, loading systems must perform actions such as lifting and conveying cargo. Prior art solutions, such as those described in publication number CN117865018A and titled "A Forklift Mechanism," achieve this lifting function by integrating an outer fork with an inner fork, while a limiter mechanism restricts the outer fork's movement to an upward direction. This technical solution is complex and requires the additional installation of a limiter mechanism. Furthermore, the outer fork must be equipped with a limiter slot and a limiter shaft to coordinate with the limiter mechanism. This complex structure makes the production and assembly process cumbersome.

[0004] The purpose of this invention is to design a forklift loading system and a control method thereof in response to the above-mentioned problems in the prior art. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a forklift loading system and a control method thereof, which can effectively solve at least one problem existing in the above-mentioned prior art.

[0006] The technical solution of the present invention is:

[0007] A fork-type loading system, comprising:

[0008] A platform assembly, wherein the platform assembly is provided with a plurality of tracks along its length;

[0009] There are several lifting fork assemblies, which are laid on the track respectively. The lifting fork assembly includes an inner fork, an outer fork, and a driving member. The outer fork cover is provided on the inner fork. A plurality of inclined blocks are provided at intervals between the inner forks. A plurality of rollers are provided at intervals between the outer forks. The rollers and the inclined blocks cooperate to lift the outer fork when the outer fork and the inner fork move relative to each other. The driving member is provided at one end of the inner fork. A pulley assembly is provided at the movable end of the driving member. The pulley assembly is used to drive the outer fork to move relative to the inner fork and provide a rolling connection when the outer fork is lifted or lowered.

[0010] There are several chain assemblies, which are laid out in the length direction of the platform assembly. The chain assemblies are driven by the drive assembly, and the chain assembly drives the lifting fork assembly to extend or retract along the track.

[0011] Furthermore, the pulley assembly includes a fixed seat, a pulley group, and a movable seat. The fixed seat is fixedly connected to the movable end of the driving member, the pulley group is arranged at the rear end of the fixed seat, the movable seat cover is arranged on the outside of the fixed seat, and the rear end of the movable seat is provided with a first sliding surface. One end of the movable seat is fixedly connected to one end of the outer fork. When the fixed seat moves following the driving end of the driving member, the movable seat drives the outer fork to move relative to the inner fork. The first sliding surface and the pulley group provide a rolling connection for the outer fork when it is raised or lowered.

[0012] Furthermore, the inner fork is provided with slide rails on the left and right sides of the movable end of the driving member, and the fixed seat track is connected to the slide rails.

[0013] Furthermore, the inclined block includes an inclined surface and a horizontal surface, and the horizontal surface is arranged at the top of the inclined surface.

[0014] Furthermore, the pulley group is arranged at the rear upper end of the fixed seat. After the movable seat drives the roller to climb the inclined plane to reach the horizontal plane, the pulley group and the inner top surface of the movable seat provide a rolling connection when the outer fork moves horizontally.

[0015] Furthermore, a second sliding surface is provided at the front end of the movable seat, and the second sliding surface pushes the movable seat to drive the roller to move from the horizontal plane to the inclined plane.

[0016] Furthermore, the inner fork is provided with a plurality of rollers on its bottom surface, and the rollers are in rolling connection with the track.

[0017] Furthermore, it includes a plurality of transverse moving and lifting assemblies, and all of the transverse moving and lifting assemblies jointly support the platform assembly and drive the platform assembly to move transversely or lift.

[0018] Furthermore, it includes side shaping devices, which are arranged on the left and right sides of the platform assembly.

[0019] A control method for a fork-type loading system is further provided. Based on the fork-type loading system, when the lifting fork assembly lifts the outer fork, the chain assembly is controlled to drive the lifting fork assembly to move to offset the horizontal displacement component of the outer fork.

[0020] Therefore, the present invention provides the following effects and / or advantages:

[0021] The present invention provides a pulley assembly at the movable end of the driving member, and the pulley assembly is used to drive the outer fork to move relative to the inner fork and provide a rolling connection when the outer fork is raised or lowered, thereby realizing a working mode of pulling the outer fork laterally and raising the height of the outer fork. During the process of lifting the outer fork, the pulley assembly realizes a low-friction connection between the outer fork and the driving member.

[0022] The pulley assembly of the present invention includes a fixed seat, a pulley group, and a movable seat. The rear end of the movable seat is provided with a first sliding surface. During the lateral movement of the pulley assembly, the pulley assembly abuts against the rear end of the movable seat, thereby pulling the movable seat to move and enabling the movable seat to be lifted along the rotation direction of the pulley group.

[0023] The present invention includes a control method, wherein the control system is used to control the chain assembly to drive the lifting fork assembly to move during the process of the lifting fork assembly lifting the outer fork, so as to offset the horizontal displacement component of the outer fork, thereby reducing the friction between the lifting fork assembly and the pallet, so that the outer fork only moves up and down relative to the platform assembly.

[0024] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0025] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the structural explosion of the lifting fork assembly.

[0028] Figure 3 for Figure 2 An enlarged schematic diagram of part A.

[0029] Figure 4 This is the bottom view of the outer fork.

[0030] Figure 5 It is a structural diagram of the transverse lifting assembly.

[0031] Figure 6 Schematic diagram of the structure of the side shaping device. DETAILED DESCRIPTION

[0032] To facilitate understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings.

[0033] refer to Figure 1-6 , a fork-type loading system, comprising:

[0034] The platform assembly 1 is provided with a plurality of tracks 101 along its length;

[0035] The platform assembly 1 of this embodiment is used to support and arrange other components.

[0036] There are several lifting fork assemblies 2, which are laid on the track 101 respectively. The lifting fork assembly 2 includes an inner fork 201, an outer fork 202, and a driving member 203. The outer fork 202 is covered by the inner fork 201. A plurality of inclined blocks 2011 are provided at intervals between the inner fork 201, and a plurality of rollers 2021 are provided at intervals between the outer fork 202. The rollers 2021 cooperate with the inclined blocks 2011 to lift the outer fork 202 when the outer fork 202 and the inner fork 201 move relative to each other. The driving member 203 is provided at one end of the inner fork 201, and a pulley assembly 3 is provided at the movable end of the driving member 203. The pulley assembly 3 is used to drive the outer fork 202 to move relative to the inner fork 201 and provide a rolling connection for the outer fork 202 when it is lifted or lowered.

[0037] In this embodiment, the lifting fork assembly 2 and pulley assembly 3 are key improvements. The outer fork 202 is housed around the upper end of the inner fork 201, allowing it to move in four directions: up, down, left, and right. The roller 2021, in conjunction with the ramp 2011, rises and falls along the ramp 2011, thereby driving the outer fork 202 up and down. During the lifting process, the outer fork 202 and the inner fork 201 experience relative motion in both the front-to-back direction and the vertical direction, meaning the outer fork 202 moves diagonally upward. In order to achieve the oblique upward movement of the outer fork 202, the driving member 203 in this embodiment drives the outer fork 202 to move forward and backward through the pulley assembly 3, and when the outer fork 202 is raised or lowered, a rolling connection is provided to one end of the outer fork 202, so that the driving member 203 is stationary in the vertical direction, and one end of the outer fork 202 is driven by the driving member 203 in a low-friction manner to achieve lifting and lowering.

[0038] There are several chain assemblies 4, which are laid out in the length direction of the platform assembly 1. The chain assembly 4 is driven by the drive assembly 5, and the chain assembly 4 drives the lifting fork assembly 2 to extend or retract along the track 101.

[0039] In this embodiment, the driving assembly 5 drives the chain assembly 4, thereby driving the lifting fork assembly 2 to extend into the interior of a container or a truck.

[0040] The workflow of the forklift loading system provided in this embodiment may be as follows:

[0041] S1, control the lifting fork assembly 2 to be in a lowered state, and receive the goods placed on the lifting fork assembly 2;

[0042] S2, after loading is completed on the lifting fork assembly 2, control the lifting fork assembly 2 to lift the goods;

[0043] S3, controlling the drive assembly 5 to drive the chain assembly 4 to drive the lifting fork assembly 2 to extend into the interior of the container or truck;

[0044] S4, control the lifting fork assembly 2 to lower the goods, control the drive assembly 5 to drive the chain assembly 4 to drive the lifting fork assembly 2 to withdraw from the container or truck, and complete the unloading.

[0045] Furthermore, the pulley assembly 3 includes a fixed seat 301, a pulley group 302, and a movable seat 303. The fixed seat 301 is fixedly connected to the movable end of the driving member 203. The pulley group 302 is arranged at the rear end of the fixed seat 301. The movable seat 303 is covered on the outside of the fixed seat 301. The rear end of the movable seat 303 is provided with a first sliding surface 3031. One end of the movable seat 303 is fixedly connected to one end of the outer fork 202. When the fixed seat 301 moves following the driving end of the driving member 203, the movable seat 303 drives the outer fork 202 to move relative to the inner fork 201. The first sliding surface and the pulley group 302 provide a rolling connection for the outer fork 202 when it is raised or lowered.

[0046] In this embodiment, the driving member 203 is a screw assembly, and the movable nut of the screw assembly is fixedly connected to the fixed seat 301, thereby realizing the forward and backward lateral movement structural basis of the fixed seat 301. The movable seat 303 can be movably covered on the outside of the fixed seat 301 up and down and forward and backward. When the fixed seat 301 drives the movable seat 303 to move backward, the pulley group 302 at the rear end of the fixed seat 301 abuts against the first sliding surface 3031, thereby reducing the friction resistance between the movable seat 303 and the fixed seat 301 when the movable seat 303 rises, and the movable seat 303 is moved upward and backward at the same time by rolling.

[0047] Furthermore, the inner fork 201 is provided with slide rails 2012 on the left and right sides of the movable end of the driving member 203 , and the fixing seat 301 is track-connected to the slide rails 2012 .

[0048] The direction of the slide rail 2012 is front-to-back, thereby limiting the moving direction of the fixing seat 301 .

[0049] Furthermore, the inclined block 2011 includes an inclined surface and a horizontal surface, and the horizontal surface is arranged at the top of the inclined surface.

[0050] Through this structure, the outer fork 202 can reach the horizontal plane when it climbs to the top along the slope through the roller 2021. On the horizontal plane, the roller 2021 has no downward movement tendency, so that after the outer fork 202 lifts the goods, it can remain in the lifted state and reduce the force applied to the driving member 203.

[0051] Furthermore, the pulley group 302 is arranged at the rear upper end of the fixed seat 301. After the movable seat 303 drives the roller 2021 to climb the inclined plane and reach the horizontal plane, the pulley group 302 and the inner top surface of the movable seat 303 provide a rolling connection when the outer fork 202 moves horizontally.

[0052] Since the outer fork 202 can remain in the lifted state after lifting the cargo under the action of the horizontal plane, in this state, the top end of the fixed seat 301 is supported on the movable seat 303, but at this time the outer fork 202 still needs to move laterally on the horizontal plane. Therefore, this embodiment further optimizes the pulley group 302 and sets it at the rear upper end of the fixed seat 301, so that the outer fork 202 can be pressed against the first sliding surface 3031 of the movable seat 303 when climbing along the inclined plane, and can be pressed against the inner top surface of the movable seat 303 when the outer fork 202 moves laterally along the horizontal plane, thereby providing a rolling connection under various working conditions.

[0053] Furthermore, a second sliding surface 3032 is provided at the front end of the movable seat 303 , and the second sliding surface pushes the movable seat 303 to drive the roller 2021 to move from the horizontal plane to the inclined plane.

[0054] Furthermore, the inner fork 201 is provided with a plurality of rollers 204 on its bottom surface, and the rollers 204 are rollingly connected to the track 101 .

[0055] Furthermore, the inner fork 201 is fixedly connected to a chain mounting seat 401 , and the chain assembly 4 drives the inner fork 201 to move along the track 101 via the chain mounting seat 401 .

[0056] In this embodiment, the chain assembly 4 drives the inner fork 201 to move along the track 101 , thereby pushing out or retracting the lifting fork assembly 2 .

[0057] Furthermore, it includes a plurality of transverse moving and lifting assemblies 6 , and all of the transverse moving and lifting assemblies 6 jointly support the platform assembly 1 and drive the platform assembly 1 to move transversely or lift.

[0058] In this embodiment, the transverse movement and lifting assembly 6 includes a leg assembly 601, a first drive cylinder 602, a second drive cylinder 603, and a track assembly 604. The first drive cylinder 602 drives the leg assembly 601, thereby realizing the lifting and lowering of the leg assembly 601. The leg assembly 601 is installed on the track assembly 604 through a pulley. Adjacent leg assemblies 601 are connected together through a side shift frame assembly 605. The second drive cylinder 603 drives the leg assembly 601 to move left and right, thereby realizing driving the platform assembly 1 to move horizontally or lift.

[0059] Furthermore, it includes side shaping devices 7, which are arranged on the left and right sides of the platform assembly 1.

[0060] The side shaping device 7 of this embodiment includes a roller row, which is arranged on the left and right sides of the platform assembly 1, so that when the goods are output forward through the lifting fork assembly 2 and the chain assembly 4, the left and right sides of the goods pallet can be shaped to make the goods arranged neatly.

[0061] A control method for a fork-type loading system is further provided. Based on the fork-type loading system, when the lifting fork assembly 2 lifts the outer fork 202, the chain assembly 4 is controlled to drive the lifting fork assembly 2 to move to offset the horizontal displacement component of the outer fork 202.

[0062] During the process of the lifting fork assembly 2 raising the outer fork 202, the driving member 203 drives the outer fork 202 to move laterally. During this lateral movement of the outer fork 202, the roller 2021 and the inclined block 2011 cooperate to lift the outer fork 202. At this time, the outer fork 202 moves in an obliquely upward direction. During this movement, the outer fork 202 will produce a relative lateral displacement with the bottom of the pallet. On the one hand, the pallet generates friction on the outer fork 202, making it difficult for the outer fork 202 to move laterally. On the other hand, the outer fork 202 requires additional work to be performed by the driving member 203 when lifting and moving the cargo laterally. Therefore, during the lifting process of this embodiment, for example, if the outer fork 202 is pulled backward by the driving member, the chain assembly 4 drives the lifting fork assembly 2 forward. During the lifting process, the speed at which the outer fork 202 is pulled backward by the driving member is the same as the speed at which the chain assembly 4 drives the lifting fork assembly 2 forward. Therefore, the lateral position of the outer fork 202 relative to the platform assembly 1 does not change, and the cargo is lifted.

[0063] It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claim. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third etc. does not indicate any order. These words may be interpreted as names.

[0064] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0065] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0066] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A fork-type loading system, characterized in that: include: A platform assembly, wherein the platform assembly is provided with a plurality of tracks along its length direction; A plurality of lifting fork assemblies are laid on the track respectively, the lifting fork assembly comprises an inner fork, an outer fork and a driving member, the outer fork cover is arranged on the inner fork, a plurality of inclined blocks are arranged at intervals between the inner forks, a plurality of rollers are arranged at intervals between the outer forks, the rollers and the inclined blocks cooperate to lift the outer fork when the outer fork and the inner fork move relative to each other, the driving member is arranged at one end of the inner fork, a pulley assembly is arranged at the movable end of the driving member, the pulley assembly is used to drive the outer fork to move relative to the inner fork and provide a rolling connection when the outer fork is lifted or lowered; There are several chain assemblies, which are laid out in the length direction of the platform assembly respectively. The chain assembly is driven by the driving assembly, and the chain assembly drives the lifting fork assembly to extend or retract along the track.

2. A forklift loading system according to claim 1, characterized in that: The pulley assembly includes a fixed seat, a pulley group, and a movable seat. The fixed seat is fixedly connected to the movable end of the driving member, the pulley group is arranged at the rear end of the fixed seat, the movable seat cover is arranged on the outer side of the fixed seat, and the rear end of the movable seat is provided with a first sliding surface. One end of the movable seat is fixedly connected to one end of the outer fork. When the fixed seat moves following the driving end of the driving member, the movable seat drives the outer fork to move relatively along the inner fork. The first sliding surface and the pulley group provide a rolling connection for the outer fork when it is raised or lowered.

3. A forklift loading system according to claim 2, characterized in that: The inner fork is provided with slide rails on the left and right sides of the movable end of the driving member, and the fixed seat track is connected to the slide rails.

4. A forklift loading system according to claim 2, characterized in that: The inclined block comprises an inclined surface and a horizontal surface, and the horizontal surface is arranged at the top end of the inclined surface.

5. A forklift loading system according to claim 4, characterized in that: The pulley block is arranged at the rear upper end of the fixed seat. After the movable seat drives the roller to climb up the inclined plane and reach the horizontal plane, the pulley block and the inner top surface of the movable seat provide a rolling connection for the outer fork when it moves laterally.

6. A forklift loading system according to claim 4, characterized in that: A second sliding surface is disposed at the front end of the movable seat, and the second sliding surface pushes the movable seat to drive the roller to move from the horizontal plane to the inclined plane.

7. A forklift loading system according to claim 1, characterized in that: The inner fork is provided with a plurality of rollers on its bottom surface, and the rollers are rollingly connected with the track.

8. A forklift loading system according to claim 1, characterized in that: It comprises a plurality of transverse movement and lifting assemblies, and all of the transverse movement and lifting assemblies jointly support the platform assembly and drive the platform assembly to move transversely or lift up and down.

9. A forklift loading system according to claim 1, characterized in that: It comprises a side shaping device which is arranged on the left and right sides of the platform assembly.

10. A control method for a forklift loading system, based on a forklift loading system according to any one of claims 1 to 8, characterized in that: When the lifting fork assembly lifts the outer fork, the chain assembly is controlled to drive the lifting fork assembly to move so as to offset the horizontal displacement component of the outer fork.

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