Forklift capable of achieving side dumping function and accessory device of forklift

Abstract

The utility model relates to the field of industrial vehicles, and discloses a forklift capable of achieving a side dumping function and an accessory device of the forklift. The forklift attachment device comprises a fork arm carrier, two bracket assemblies and two forks, the fork arm carrier is connected with a gantry system of a forklift in a sliding mode, the two bracket assemblies are horizontally connected to the fork arm carrier in a sliding mode at the same height, the forks correspond to the bracket assemblies in a one-to-one mode, one fork is fixedly connected to one bracket assembly, and the other fork is fixedly connected to the other bracket assembly. The other pallet fork is vertically connected to the other bracket assembly in a sliding mode and used for adjusting the relative height of the horizontal portions of the two pallet forks under the condition that goods need to be loaded and unloaded so as to complete corresponding loading and unloading actions. According to the forklift truck accessory device, the relative height of the two pallet forks is adjusted, the two bracket assemblies are controlled to drive the pallet forks to transversely move in the direction of the pallet fork with the relatively low height, so that the side unloading function of cargoes is achieved, the tool efficiency of a forklift truck is improved, and the working safety is guaranteed; meanwhile, the structure is simple, installation and maintenance are convenient, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of industrial vehicles, in particular to a forklift and an attachment device thereof which realizes a side-unloading function. Background Art

[0002] Forklifts, as industrial transport vehicles, refer to various wheeled transport vehicles used for loading, unloading, stacking, and short-distance transportation of palletized cargo. They are widely used in ports, stations, airports, freight yards, and other locations, and are essential equipment for pallet and container transport. Currently, existing forklifts are only capable of loading and unloading cargo in the forward direction. However, in certain situations, such as narrow aisles or when cargo needs to be unloaded laterally from the forklift, the space and turning radius of the forklift require multiple adjustments to the forklift's direction, and may even render it impossible to turn, making it impossible to unload cargo, seriously affecting the forklift's efficiency and safety. Utility Model Content

[0003] In order to overcome the above technical problems, the present invention provides a forklift and its attachment device that realizes the side unloading function. The forklift attachment device adjusts the relative height of the two forks and controls the two bracket assemblies to drive the forks to move laterally toward the forks with relatively lower heights, so as to realize the side unloading function of the goods, improve the tooling efficiency of the forklift, and ensure work safety; at the same time, the structure is simple, easy to install and maintain, and the maintenance cost is reduced.

[0004] In order to achieve the above-mentioned object, the present invention provides a forklift attachment device that realizes the side-unloading function, and the attachment device includes:

[0005] A fork frame, wherein the fork frame is slidably connected to the mast system of the forklift to enable the fork frame to move up and down on the mast system;

[0006] Two bracket assemblies, the two bracket assemblies are horizontally slidably connected to the fork frame at the same height;

[0007] Two forks correspond to the two bracket assemblies one by one, the vertical portion of one fork is fixedly connected to one bracket assembly, and the vertical portion of the other fork is vertically slidably connected to the other bracket assembly, so as to adjust the relative height of the horizontal portions of the two forks to complete the corresponding unloading action when unloading is required.

[0008] Preferably, an upper slide is provided on the top of the fork frame, and an upper roller is provided on one side of the top of each of the two bracket assemblies and is slidably connected to the upper slide;

[0009] A lower slide plate is transversely arranged at the bottom of the fork frame, and a first sliding roller slidably connected to the lower slide plate is arranged on one side of the bottom of the two bracket assemblies.

[0010] Preferably, a plurality of second sliding rollers are provided on the other fork, and the second sliding rollers are vertically slidably connected to the other bracket assembly.

[0011] Preferably, the other bracket assembly further comprises a lifting cylinder, a piston end of the lifting cylinder is fixedly connected to the top of the vertical portion of the other fork, and a base end of the lifting cylinder is fixedly connected to the top of the other bracket assembly.

[0012] Preferably, a mounting hole is provided on the top end of the vertical portion of the other fork, and the piston end of the lifting cylinder passes through the mounting hole and is fixedly connected to the other fork.

[0013] Preferably, the attachment device also includes three position sensors, which are arranged vertically from top to bottom on the vertical part of another fork, and one end of the other bracket assembly is provided with a detection limit plate corresponding to the position sensor, and the initial heights of the horizontal parts of the two forks are the same height, and the initial position of the second position sensor is at the same height as the detection limit plate.

[0014] Preferably, the attachment device further includes three display lights, which are electrically connected to the three position sensors in a one-to-one correspondence and are arranged in the cab of the forklift. The first display light emits red light, the second display light emits green light, and the third display light emits yellow light.

[0015] Preferably, the attachment device further includes two cover plates, which are sleeved on the peripheries of the vertical portions of the two forks in a one-to-one correspondence and fixedly connected to the two bracket assemblies in a one-to-one correspondence.

[0016] Preferably, the attachment device further comprises two side shift cylinders, the piston ends of the two side shift cylinders are fixedly connected to the two bracket assemblies in a one-to-one correspondence, and the base ends of the two side shift cylinders are fixedly connected to the fork frame.

[0017] A second aspect of the present invention provides a forklift, comprising a forklift body and an attachment device according to any one of the above claims.

[0018] Through the above technical solution, the forklift attachment device adjusts the relative height of the two forks and controls the two bracket assemblies to drive the forks to move laterally toward the fork with relatively lower height, so as to realize the side unloading function of the goods, improve the tooling efficiency of the forklift and ensure the safety of work; at the same time, relatively sliding upper rollers and sliding rollers are provided on the fork frame and the bracket assembly to ensure that the bracket assembly slides smoothly on the shelf; and a lifting cylinder is provided to drive the up and down movement of a single fork, thereby improving the stability of the fork operation; and by providing three position sensors and corresponding display lights, the loading and unloading status of the forklift is warned to ensure the safety of work. At the same time, the two forks are at the same height, which can meet the normal loading and unloading requirements and achieve the effect of one machine with multiple uses; the forklift attachment device has a simple structure, is easy to install and maintain, and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a forklift and its attachment device that realizes the side-dumping function according to one embodiment of the present utility model;

[0020] Figure 2 This is a structural schematic diagram of a bracket assembly equipped with a slidable fork of a forklift attachment device that realizes a side-dumping function according to one embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of a bracket assembly equipped with a fixed fork for a forklift attachment device that realizes a side-dumping function according to one embodiment of the present utility model;

[0022] Figure 4 It is a schematic diagram of a forklift unloading cargo sideways according to an embodiment of the present utility model.

[0023] Description of Reference Numerals

[0024] 1. Fork frame 2. Bracket assembly

[0025] 3. Fork 4. Position sensor

[0026] 5. Forklift 6. Cover

[0027] 7. Side shift cylinder 8. Mast system

[0028] 11. Go up the skateboard 12. Go down the skateboard

[0029] 21. Upper roller 22. First sliding roller

[0030] 23. Lifting cylinder 24. Detection limit plate

[0031] 31. Vertical part 32. Horizontal part

[0032] 33. Second sliding roller 34. Mounting hole DETAILED DESCRIPTION

[0033] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not intended to limit the embodiment of the present invention.

[0034] like Figure 1 The figure shows a structural diagram of a forklift and its attachment device that realizes the side-dumping function according to an embodiment of the present invention; Figure 1 In the figure, the forklift attachment device may include a fork frame 1, two bracket assemblies 2 and two forks 3. Specifically, the fork frame 1 can be slidably connected to the mast system 8 of the forklift 5. The two bracket assemblies 2 are horizontally slidably connected to the fork frame 1 at the same height. The two forks 3 correspond to the two bracket assemblies 2 one by one. The vertical portion 31 of one fork 3 is fixedly connected to one bracket assembly 2, and the vertical portion 31 of the other fork 3 is vertically slidably connected to the other bracket assembly 2, which is used to adjust the relative height of the horizontal portions 32 of the two forks 3 when loading and unloading goods is required to complete the corresponding loading and unloading actions. When side unloading in different directions is required, the relative heights of the horizontal portions 32 of the two forks 3 can be adjusted so that the side of the fork 3 with the lower relative height is the unloading side, and the bracket assembly 2 drives the fork 3 to move toward the unloading side, thereby achieving side unloading in different directions. At the same time, when the relative heights of the forks 3 are the same, the functions of the forks 3 and the fork frame 1 are the same as those of normal forks and fork frames, and normal loading and unloading operations can be performed.

[0035] like Figure 2 FIG. 1 is a schematic structural diagram of a bracket assembly equipped with a slidable fork for a forklift attachment device that realizes a side-unloading function according to an embodiment of the present invention; FIG. Figure 3 The figure shows a schematic structural diagram of a bracket assembly equipped with a fixed fork of a forklift attachment device realizing a side unloading function according to an embodiment of the present invention; Figure 2 and 3 In the embodiment of the present invention, taking into account the great force that the bracket assembly 2 bears when sliding with loaded goods, in order to avoid sliding restriction and improve sliding stability, in one embodiment of the present invention, an upper slide 11 is provided on the top of the fork frame 1, and one side of the top of each of the two bracket assemblies 2 is provided with an upper roller 21 corresponding to the upper slide 11 for sliding connection, and a lower slide 12 is laterally provided at the bottom of the fork frame 1, and one side of the bottom of the two bracket assemblies 2 is provided with a first sliding roller 22 for sliding connection with the lower slide 12. There are upper and lower sliding contact points between the bracket assembly 2 and the fork frame 1, thereby improving the sliding stability and ensuring the safety of work.

[0036] exist Figure 2 In order to achieve vertical movement of the fork and improve the stability of sliding, in one embodiment of the present invention, a plurality of second sliding rollers 33 are provided on the other fork 3. The second sliding rollers 33 are vertically slidably connected to the other bracket assembly 2, thereby achieving vertical sliding of the fork 3, preventing the fork 3 from being restricted in sliding due to carrying too heavy cargo, and improving the stability of sliding. Taking into account the speed and stability of the fork 3 during vertical sliding and meeting the requirements of moving heavy cargo, in one embodiment of the present invention, the other bracket assembly 2 also includes a lifting cylinder 23. The piston end of the lifting cylinder 23 is fixedly connected to the top of the vertical portion 31 of the other fork 3, and the base end of the lifting cylinder 23 is fixedly connected to the top of the other bracket assembly 2. The piston end of the lifting cylinder 23 drives the fork 3 to move vertically relative to the bracket assembly 2, thereby achieving a relative height between the two forks 3. In order to facilitate the smooth contact connection between the fork 3 and the lifting cylinder 23 and to facilitate installation and maintenance, in one embodiment of the present utility model, a mounting hole 34 is provided at the top of the vertical portion 31 of the other fork 3, and the piston end of the lifting cylinder 23 passes through the mounting hole 34 and is fixedly connected to the other fork 3, thereby facilitating the contact and driving of the fork 3.

[0037] like Figure 4 The figure shows a schematic diagram of a forklift unloading cargo sideways according to an embodiment of the present invention. Figure 1 、 2In Figures 4 and 5, in order to ensure that the attachment device can function properly in loading and unloading the forklift and detect the relative height between the two forks 3, in one embodiment of the present invention, the attachment device further comprises three position sensors 4 arranged vertically from top to bottom on the vertical portion 31 of the other fork 3. A detection limit plate 24 corresponding to the position sensor 4 is provided at one end of the other bracket assembly 2. The horizontal portions 32 of the two forks 3 are initially at the same height. Furthermore, the initial position of the second position sensor 4 is at the same height as the detection limit plate 24. Initially, there is no height difference between the two forks 3, corresponding to signal feedback between the second position sensor 4 and the detection limit plate 24, ensuring normal operation of the fork frame and forks. In order to indicate the loading and unloading status of the forks 3 at this time and improve the safety of loading and unloading operations, in one embodiment of the present invention, the attachment device further comprises three indicator lights (not shown in the figure). The three indicator lights are electrically connected to the three position sensors 4 in a one-to-one correspondence. The first indicator light emits red light, the second indicator light emits green light, and the third indicator light emits yellow light. When there is a relative height difference between the horizontal parts 32 of the two forks 3, it indicates that side unloading is in progress; when there is signal feedback between the first position detector 4 and the detection limit plate 24, the first display light emits a red light, which indicates that the vertically moving fork 3 moves downward relative to the bracket assembly 2. At this time, the height of the vertically moving fork 3 is less than the height of the fixed fork 3. The cargo will slide in the direction of the vertically moving fork under the action of gravity, and the cargo will be synchronously moved sideways in the direction of the vertically moving fork 3 in cooperation with the side shift cylinder 7, so as to realize the unloading operation of the cargo without turning the whole vehicle; when there is signal feedback between the third position detector 4 and the detection limit plate 24, When the third indicator light emits yellow light, it means that the vertically moving fork moves upward relative to the bracket assembly. At this time, the height of the vertically moving fork 33 is greater than the height of the fixed fork. The goods will slide toward the direction of the fixed fork 3 under the action of gravity, and the side shift cylinder 7 will synchronously move the goods sideways toward the direction of the fixed fork 3 to achieve unloading operations without turning the vehicle. When the second position detector 4 and the detection limit plate 24 have signal feedback, the second indicator light emits yellow light, which means that there is no height difference between the horizontal parts 32 of the two forks 3, and the forks 3 and the fork frame 1 can perform normal loading and unloading operations.

[0038] exist Figure 1 、 2As for 3, in order to protect the vertical portion 31 of the fork 3 and prevent the fork 3 from shaking, in one embodiment of the present invention, the attachment device also includes two cover plates 6, which are respectively sleeved on the outer periphery of the vertical portion 31 of the two forks 3 and are fixedly connected to the two bracket assemblies 2 in a one-to-one correspondence, thereby avoiding the influence of external factors such as goods on the fork 3 and preventing the fork 3 from shaking and displacement.

[0039] exist Figure 1 、 2 As for 3, considering that the bracket assembly 2 needs to run smoothly, in one embodiment of the present utility model, the attachment device also includes two side shift cylinders 7, the piston ends of the two side shift cylinders 7 are fixedly connected to the two bracket assemblies 2 in a one-to-one correspondence, and the base ends of the two side shift cylinders 7 are fixedly connected to the fork frame; when the goods need to be side unloaded, the two side shift cylinders 7 can synchronously carry the two bracket assemblies 2 to slide smoothly on the fork frame 1, so as to realize side unloading operation without turning the whole vehicle.

[0040] Another aspect of the present invention provides a forklift, which comprises a forklift body and an attachment device as claimed in any one of the above claims, and realizes the side unloading operation function of the forklift.

[0041] Through the above technical solution, the forklift attachment device adjusts the relative height of the two forks and controls the two bracket assemblies to drive the forks to move laterally toward the fork with relatively lower height, so as to realize the side unloading function of the goods, improve the tooling efficiency of the forklift and ensure the safety of work; at the same time, relatively sliding upper rollers and sliding rollers are provided on the fork frame and the bracket assembly to ensure that the bracket assembly slides smoothly on the shelf; and a lifting cylinder is provided to drive the up and down movement of a single fork, thereby improving the stability of the fork operation; and by providing three position sensors and corresponding display lights, the loading and unloading status of the forklift is warned to ensure the safety of work. At the same time, the two forks are at the same height, which can meet the normal loading and unloading requirements and achieve the effect of one machine with multiple uses; the forklift attachment device has a simple structure, is easy to install and maintain, and reduces the maintenance cost.

[0042] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0043] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A forklift attachment device that realizes the side dumping function, characterized in that: The attachment device includes: A fork frame, wherein the fork frame is slidably connected to the mast system of the forklift to enable the fork frame to move up and down on the mast system; Two bracket assemblies, the two bracket assemblies are horizontally slidably connected to the fork frame at the same height; Two forks correspond to the two bracket assemblies one by one, the vertical portion of one fork is fixedly connected to one bracket assembly, and the vertical portion of the other fork is vertically slidably connected to the other bracket assembly, so as to adjust the relative height of the horizontal portions of the two forks to complete the corresponding unloading action when unloading is required.

2. The attachment device according to claim 1, characterized in that: An upper slide is provided on the top of the fork frame, and one side of the top of the two bracket assemblies is respectively provided with an upper roller slidably connected to the upper slide; A lower slide plate is transversely arranged at the bottom of the fork frame, and a first sliding roller slidably connected to the lower slide plate is arranged on one side of the bottom of the two bracket assemblies.

3. The attachment device according to claim 1, characterized in that: A plurality of second sliding rollers are provided on the other fork, and the second sliding rollers are vertically slidably connected to the other bracket assembly.

4. The attachment device according to claim 3, characterized in that: The other bracket assembly further includes a lifting cylinder, a piston end of the lifting cylinder is fixedly connected to the top of the vertical portion of the other fork, and a base end of the lifting cylinder is fixedly connected to the top of the other bracket assembly.

5. The attachment device according to claim 4, characterized in that: The top end of the vertical portion of the other fork is provided with a mounting hole, and the piston end of the lifting cylinder passes through the mounting hole and is fixedly connected to the other fork.

6. The attachment device according to claim 1, characterized in that: The attachment device also includes three position sensors, which are arranged vertically from top to bottom on the vertical part of another fork. One end of the other bracket assembly is provided with a detection limit plate corresponding to the position sensor, and the initial heights of the horizontal parts of the two forks are the same height. At the same time, the initial position of the second position sensor is at the same height as the detection limit plate.

7. The attachment device according to claim 6, characterized in that: The attachment device also includes three display lights, which are electrically connected to the three position sensors in a one-to-one correspondence and are arranged in the cab of the forklift. The first display light emits red light, the second display light emits green light, and the third display light emits yellow light.

8. The attachment device according to claim 1, characterized in that: The attachment device further includes two cover plates, which are sleeved on the peripheries of the vertical portions of the two forks in a one-to-one correspondence and fixedly connected to the two bracket assemblies in a one-to-one correspondence.

9. The attachment device according to claim 1, characterized in that: The attachment device also includes two side shift cylinders, the piston ends of the two side shift cylinders are fixedly connected to the two bracket assemblies in a one-to-one correspondence, and the base ends of the two side shift cylinders are fixedly connected to the fork frame.

10. A forklift, characterized in that: The forklift comprises a forklift body and the attachment device according to any one of claims 1 to 9.

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