Lifting pallet fork assembly

Abstract

The utility model relates to a lifting pallet fork assembly which comprises an inner fork, an outer fork and a driving piece, the outer fork is arranged on the inner fork in a covering mode, a plurality of inclined blocks are arranged on the inner fork at intervals, a plurality of idler wheels are arranged on the outer fork at intervals, and the idler wheels and the inclined blocks are matched to enable the outer fork to lift when the outer fork and the inner fork move relatively. The driving part is arranged at one end of the inner fork, a pulley assembly is arranged at the movable end of the driving part, and the pulley assembly is used for driving the outer fork to move relatively along the inner fork and providing rolling connection when the outer fork ascends and descends.

Description

Technical Field

[0001] The utility model relates to the field of cargo fork assemblies, in particular to a lifting cargo fork assembly. Background Art

[0002] With the rapid development of the logistics industry, the transportation volume of goods has continued to increase, and the requirements for loading and unloading efficiency have become increasingly higher. Traditional loading and unloading methods can no longer meet the needs of modern logistics. Therefore, the fork assembly can realize actions such as forking and lifting of goods, thereby improving loading efficiency.

[0003] In the prior art, for example, a solution titled "A Fork Lifting Mechanism," published under publication number CN117865018A, achieves cargo lifting through the coordination of an outer fork and an inner fork, with a limit mechanism restricting the outer fork's movement to only upward. This technical solution is complex and requires the additional installation of a limit mechanism. Furthermore, the outer fork must be equipped with a limit slot, a limit shaft, and other structures to coordinate with the limit mechanism. This complex structure makes the production and assembly process cumbersome.

[0004] The purpose of this utility model is to design a lifting fork assembly to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a lifting fork assembly that can effectively solve at least one problem existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is:

[0007] A lifting fork assembly includes an inner fork, an outer fork, and a driving member, wherein the outer fork cover is provided on the inner fork, a plurality of inclined blocks are provided at intervals between the inner forks, and a plurality of rollers are provided at intervals between the outer forks, the rollers and the inclined blocks cooperate to enable the outer fork to be lifted or lowered 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, and 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] Furthermore, the inner fork is provided with a plurality of rollers on its bottom surface, and the rollers are rollingly connected with the corresponding tracks.

[0014] Furthermore, it includes a universal ball, which is arranged on the left and right sides of the front end of the outer fork.

[0015] Therefore, the present invention provides the following effects and / or advantages:

[0016] The utility model 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 mode between the outer fork and the driving member.

[0017] The pulley assembly of the utility model 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.

[0018] 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 through implementation of the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] 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

[0020] Figure 1This is a schematic diagram of the structural explosion of the lifting fork assembly.

[0021] Figure 2 for Figure 1 An enlarged schematic diagram of part A.

[0022] Figure 3 This is the bottom view of the outer fork.

[0023] Figure 4 It is a structural diagram of the universal wheel. DETAILED DESCRIPTION

[0024] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the following embodiments and accompanying drawings:

[0025] Example 1

[0026] refer to Figure 1-4 A lifting fork assembly 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 arranged at intervals between the inner fork 201. A plurality of rollers 2021 are arranged at intervals between the outer fork 202. The rollers 2021 and the inclined blocks 2011 cooperate to enable the outer fork 202 to be lifted when the outer fork 202 and the inner fork 201 move relative to each other. The driving member 203 is arranged at one end of the inner fork 201. A pulley assembly is provided at the movable end of the driving member 203. The pulley assembly is used to drive the outer fork 202 to move relative to the inner fork 201 and provide a rolling connection when the outer fork 202 is lifted or lowered.

[0027] The lifting fork assembly and pulley assembly are key improvements in this embodiment. The outer fork 202 is positioned 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, can rise and fall 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 that the outer fork 202 moves diagonally upward. To achieve this diagonal upward motion, the driver 203 in this embodiment drives the outer fork 202 forward and backward via the pulley assembly. During the lifting process, a rolling connection is provided to one end of the outer fork 202, keeping the driver 203 vertically stationary while the other end of the outer fork 202 is driven by the driver 203 in a low-friction manner.

[0028] Furthermore, the pulley assembly 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.

[0029] 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.

[0030] 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 .

[0031] The direction of the slide rail 2012 is front-to-back, thereby limiting the moving direction of the fixing seat 301 .

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 corresponding tracks.

[0038] Furthermore, a universal ball 205 is included and is disposed on the left and right sides of the front end of the outer fork 202 .

[0039] The universal ball 205 can form a rolling connection between the front end of the outer fork 202 and the pallet when the outer fork 202 extends into the pallet, thereby facilitating the entry of the outer fork 202.

[0040] Furthermore, the inner fork 201 is fixedly connected to a chain mounting seat 401 , and the chain assembly drives the inner fork to move along the track via the chain mounting seat 401 .

[0041] In this embodiment, the chain assembly drives the inner fork 201 to move along the track, thereby pushing out or retracting the lifting fork assembly.

[0042] Furthermore, a control system is included, which is used to control the chain assembly to drive the lifting fork assembly to move in the process of the lifting fork assembly lifting the outer fork 202 to offset the horizontal displacement component of the outer fork 202.

[0043] During the process of the lifting fork assembly raising the outer fork 202, the driving member 203 drives the outer fork 202 to move laterally. During this process, 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 from the driving member 203 to lift and move 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 drives the lifting fork assembly 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 drives the lifting fork assembly forward. Therefore, the lateral position of the outer fork 202 relative to the platform assembly 1 does not change, and the cargo is lifted.

[0044] It should be noted that in the claims, any reference signs placed between brackets 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, and third etc. does not indicate any order. These words may be interpreted as names.

[0045] 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.

[0046] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, 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 this utility model based on specific circumstances.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means 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 the features of different embodiments or examples, unless they are contradictory.

Claims

1. A lifting fork assembly, characterized by: It includes 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, and a plurality of rollers are arranged at intervals between the outer forks. The rollers and the inclined blocks cooperate to make the outer fork rise and fall 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, and a pulley assembly is arranged 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 and lowered.

2. The lifting fork assembly 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 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 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. The lifting fork assembly 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. The lifting fork assembly according to claim 2, characterized in that: The inclined block includes an inclined surface and a horizontal surface, and the horizontal surface is arranged at the top end of the inclined surface.

5. The lifting fork assembly 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 the inclined plane to 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 the outer fork moves laterally.

6. The lifting fork assembly according to claim 4, characterized in that: 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.

7. The lifting fork assembly 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 in rolling connection with the corresponding tracks.

8. The lifting fork assembly according to claim 1, characterized in that: It includes a universal ball, which is arranged on the left and right sides of the front end of the outer fork.

9. The lifting fork assembly according to claim 1, characterized in that: The inner fork is fixedly connected to a chain mounting seat, and the chain assembly drives the inner fork to move along the track through the chain mounting seat.

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