A structure of a fork of an unmanned forklift truck

Abstract

The application discloses an unmanned forklift fork structure and belongs to the technical field of forklift forks.The unmanned forklift fork structure comprises a main body, a portal, a rack, a lifting installation, a fork and a driving structure.The lifting installation is fixedly arranged on the front side of the main body, the two forks are fixedly arranged on the rack, the lower ends of the forks are provided with supporting blocks, the driving structure is arranged between the rack and the forks, the two sliding blocks are slidingly arranged in the forks, and the two sliding blocks are respectively located on the front and back sides of the supporting blocks.The unmanned forklift fork structure has the beneficial effects that when the forks pick up a pallet, the two supporting blocks push the pallet away from each other, the two forks are located at the middle position of the pallet, stability is ensured, and tilting and shaking are avoided; and under the action of the supporting blocks, the supporting area of the pallet is increased, and the stability is further improved.

Description

Technical Field

[0001] This application relates to the field of forklift fork technology, and more specifically, to an unmanned forklift fork structure. Background Technology

[0002] Forklifts are various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transportation of palletized goods. With the increasing application of the Internet of Things and big data, unmanned forklifts are gradually replacing manual forklifts. Automatic goods handling can be achieved through remote control of the forklift. Existing unmanned forklifts generally have forks for picking up goods, but currently, the forks on unmanned forklifts are generally of a fixed size. Typically, the forks are inserted into the bottom of the pallet to lift it for transport. However, different pallet sizes result in different insertion positions. When the pallet is wide, the forks may not be positioned in the center of the pallet when picking it up, which can easily lead to wobbling and tipping during handling.

[0003] Therefore, an unmanned forklift fork structure is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide an unmanned forklift fork structure, including: a main body and a mast, a rack, a lifting device mounted on the mast, and the mast fixedly mounted on the front side of the main body; two forks, each fixedly mounted on the rack, with a support block at the lower end of each fork; a drive structure between the rack and the forks; the drive structure includes: two sliding blocks slidably mounted on the lower side of the forks, the two sliding blocks being located on the front and rear sides of the support block respectively, hinge rods hinged to both ends of the support block, one end of each hinge rod being hinged to a sliding block, an adjusting screw rotatably mounted inside the fork, the adjusting screw passing through the two sliding blocks and threadedly connected to the two sliding blocks, the threads of the two sliding blocks rotating in opposite directions, and the two support blocks moving away from each other in the left-right direction when the two sliding blocks approach each other.

[0006] By using two support blocks, when the pallet is picked up by forks, the two support blocks push the pallet away from each other, so that the two forks are positioned in the middle of the pallet, ensuring stability and preventing tipping and shaking. At the same time, the support blocks increase the support area of ​​the pallet, further improving stability.

[0007] Furthermore, an adjustment motor is fixedly installed on the gantry, and a rotating shaft is fixedly connected to the power output end of the adjustment motor. A fixing part is fixedly connected to the shelf, and a spline sleeve is rotatably installed inside the fixing part. The rotating shaft passes through the spline sleeve and is slidably connected to the spline sleeve. The spline sleeve and the rotating shaft rotate synchronously. Two drive shafts are also rotatably installed inside the fixing part. The drive shafts are connected to the spline sleeve through a sprocket and a drive chain.

[0008] Furthermore, the forks include a fixed section fixedly connected to the rack and an extended section slidably mounted on the fixed section. A telescopic sleeve is rotatably mounted on the rack. The telescopic sleeve is mounted on the adjusting screw and slidably engaged with the adjusting screw. The adjusting screw and the telescopic sleeve rotate synchronously. One end of the telescopic sleeve is inserted into the inverted fixed part and fixedly connected to a second cone wheel. A first cone wheel is fixedly connected to the drive shaft. The first cone wheel and the second cone wheel mesh and rotate synchronously.

[0009] By adjusting the motor, spline sleeve, and drive shaft, the telescopic sleeve can be rotated, which in turn drives the adjusting screw to rotate. This allows the support block to abut against both sides of the pallet under the action of the two hinged rods, thus straightening and supporting the pallet. When the length of the forks needs to be adjusted, the extended section slides on the fixed section to adjust the overall length. At this time, the adjusting screw slides inside the telescopic sleeve.

[0010] Furthermore, an abutment block is installed on the support block, the abutment block is located on the side of the two support blocks that are far apart from each other, a slide rod is fixedly installed on the abutment block that passes through the support block and slides with the support block, and a screw shaft is rotatably installed on the abutment block that passes through the support block and is threadedly connected to the support block.

[0011] By using the abutment block, the distance between the support block and the abutment block can be adjusted by rotating the screw shaft. This allows the support position of the abutment block to be adjusted according to different pallet models. When the pallet size is large, rotating the screw shaft increases the distance between the abutment block and the support block, allowing the abutment block to move to a more distant position for support.

[0012] Furthermore, a baffle is fixedly installed on the sliding block. The baffle abuts against the hinge rod to limit the hinge rod, so that the hinge rod has two extreme rotations. The first state is when the two sliding blocks are farthest apart, and the hinge rod abuts against the baffle. At this time, a certain angle is formed between the two hinge rods. The second extreme state is when the two sliding blocks are closest together and the two support blocks are farthest apart.

[0013] Furthermore, the slide bar is provided with a scale extending along the slide bar, through which the distance between the abutment block and the support block can be observed.

[0014] Furthermore, a positioning bolt is installed on the extended section, and a positioning screw hole is opened on the fixed section. One end of the positioning bolt is inserted into the positioning screw hole and threadedly connected to the positioning screw hole to limit the movement of the extended section and the fixed section.

[0015] The fork extension and fixed sections can be secured by the positioning bolts and screw holes, making it easy to adjust the fork length according to different pallet models.

[0016] The beneficial effects of this application are as follows:

[0017] 1. By setting two support blocks, when the pallet is picked up by the forks, the two support blocks push the pallet away from each other, so that the two forks are in the middle position of the pallet, ensuring stability and preventing tipping and shaking. At the same time, the support blocks increase the support area of ​​the pallet, further improving stability.

[0018] 2. By adjusting the motor, spline sleeve, and drive shaft, the telescopic sleeve can be rotated, which in turn drives the adjusting screw to rotate. This allows the support block to abut against both sides of the pallet under the action of the two hinged rods, thus straightening and supporting the pallet. When the length of the forks needs to be adjusted, the extended section slides on the fixed section to adjust the overall length. At this time, the adjusting screw slides inside the telescopic sleeve.

[0019] 3. By using the abutment block, the distance between the support block and the abutment block can be adjusted by rotating the screw shaft. This allows the support position of the abutment block to be adjusted according to different pallet models. When the pallet size is large, rotating the screw shaft increases the distance between the abutment block and the support block, allowing the abutment block to move to a more distant position for support. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0021] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0022] In the attached diagram:

[0023] Figure 1 This is an overall schematic diagram according to one embodiment of the present application;

[0024] Figure 2 yes Figure 1 The embodiment describes the installation structure of the adjusted motor;

[0025] Figure 3 yes Figure 1 The installation diagram of the spline sleeve and the drive shaft in the embodiment is shown below;

[0026] Figure 4 yes Figure 1 The installation diagram of the sliding block in the embodiment is shown below;

[0027] Figure 5 yes Figure 1 The installation diagram of the abutment block in the embodiment is shown below;

[0028] Figure 6 yes Figure 1 The above embodiment shows the installation diagram of the protruding section and the fixed section.

[0029] Figure label:

[0030] 10. Main body; 11. Mast; 12. Shelf; 13. Forks; 14. Adjusting motor; 15. Shaft; 16. Fixing part; 17. Spline sleeve; 18. Telescopic sleeve; 19. Drive shaft; 20. Drive chain; 21. First cone wheel; 22. Second cone wheel; 23. Sliding block; 24. Support block; 25. Hinge rod; 26. Abutment block; 27. Slide rod; 28. Screw shaft; 29. ​​Baffle; 30. Extended section; 31. Fixing section; 32. Positioning screw hole; 33. Positioning bolt; 34. Adjusting screw. Detailed Implementation

[0031] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0032] It should also be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0033] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0034] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0035] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] Reference Figure 1-6 An unmanned forklift fork structure includes: a main body 10, a mast 11, a rack 12, forks 13, a support block 24, a sliding block 23, and a hinge rod 25. The main body 10 and mast 11 can be referenced from existing forklift structures. The rack 12 is mounted on the mast 11 and can be raised and lowered by a drive structure; the specific drive structure can refer to existing products. Two forks 13 are provided and positioned on the front side of the rack 12. Each fork 13 includes an extendable section 30 and a fixed section 31. The fixed section 31 is fixedly mounted to the rack 12, and the extendable section 30 is fitted onto the fixed section 31, allowing for adjustment of the overall length of the forks 13 by extending the extendable section 30. The extension section 30 is equipped with a positioning bolt 33, and the fixed section 31 is provided with a positioning screw hole 32. One end of the positioning bolt 33 is inserted into the positioning screw hole 32 and threadedly connected to the positioning screw hole 32 to limit the extension section 30 and the fixed section 31. The positioning bolt 33 and the positioning screw hole 32 can fix the extension section 30 and the fixed section 31, making it convenient to adjust the length of the fork 13 according to different pallet models.

[0037] When picking up goods, if the forks 13 are not supported in the center of the pallet, the goods may become unstable or even tip over. Two sliding blocks 23 are slidably disposed within the extension section 30, along with a support block 24 located between the two sliding blocks 23. Both ends of the support block 24 are hinged to hinge rods 25, one end of each hinge rod 25 being hinged to a sliding block 23. An adjusting screw 34 is rotatably disposed within the fork 13, passing through and threadedly connected to the two sliding blocks 23. The threads of the two sliding blocks 23 rotate in opposite directions. When the two sliding blocks 23 approach each other, the two support blocks 24 move away from each other in a left-right direction. Simultaneously, a slot is provided on the side of the two extension sections 30 that is away from each other, allowing the support block 24 to pass through. When the adjusting screw 34 rotates, it causes the two sliding blocks 23 to approach each other, and then, under the action of the hinge rods 25, the support block 24 extends from the slot and abuts against the pallet, straightening the pallet and ensuring that the forks 13 are supported in the center of the pallet.

[0038] Because different pallet models have different sizes, when the pallet is large, the support block 24 may not be able to support the inside of the pallet, making it impossible to straighten. To address this, an abutment block 26 is installed on the support block 24, located on the side of the two support blocks 24 furthest apart. A slide rod 27 is fixedly installed on the abutment block 26, passing through and slidingly engaging with the support block 24. A screw shaft 28 is rotatably installed on the abutment block 26, passing through and threadedly connecting to the support block 24. When the pallet is large, rotating the screw shaft 28 moves the abutment block 26 away from the support block 24, thereby adjusting the distance between the support block 24 and the abutment block 26, allowing the abutment block 26 to move to a more distant position for support. The slide rod 27 has graduations extending along it, allowing the distance between the abutment block 26 and the support block 24 to be observed.

[0039] An adjusting motor 14 is fixedly mounted on the gantry 11. A rotating shaft 15 is fixedly connected to the power output end of the adjusting motor 14. A fixing part 16 is fixedly connected to the shelf 12. A spline sleeve 17 is rotatably mounted inside the fixing part 16. The rotating shaft 15 passes through the spline sleeve 17 and is slidably connected to it. The spline sleeve 17 rotates synchronously with the rotating shaft 15. Two drive shafts 19 are also rotatably mounted inside the fixing part 16. The drive shafts 19 are connected to the spline sleeve 17 via sprockets and a drive chain 20. The adjusting motor 14 can be a servo motor as used in existing technology.

[0040] The shelf 12 is rotatably equipped with a telescopic sleeve 18, which is fitted onto and slides on the adjusting screw 34. The adjusting screw 34 and the telescopic sleeve 18 rotate synchronously. One end of the telescopic sleeve 18 is inserted into the inverted fixing part 16 and fixedly connected to a second conical wheel 22. A first conical wheel 21 is fixedly connected to the drive shaft 19, and the first conical wheel 21 meshes with the second conical wheel 22 and rotates synchronously. When the fixed section 31 extends, the adjusting screw 34 slides within the telescopic sleeve 18.

[0041] A baffle 29 is fixedly installed on the sliding block 23. The baffle 29 abuts against the hinge rod 25 to limit the hinge rod 25, so that the hinge rod 25 has two extreme rotations. The first state is when the two sliding blocks 23 are farthest apart, and the hinge rod 25 abuts against the baffle 29, at which time the two hinge rods 25 form a certain angle. The second extreme state is when the two sliding blocks 23 are closest together and the two support blocks 24 are farthest apart. It should be noted that in the first state, the two abutting blocks 26 and the support blocks 24 are all located within the extended section 30, and will not obstruct the fork 13 from inserting into the lower end of the pallet.

[0042] Working process or usage method:

[0043] 1. When the forks 13 are inserted into the bottom of the pallet, the power output of the adjusting motor 14 is started, which drives the telescopic sleeve 18 to rotate through the spline sleeve 17 and the drive shaft 19, thereby driving the adjusting screw 34 to rotate, so that the two sliding blocks 23 move closer to each other, and the two support blocks 24 extend through the slots and extend through the extension section 30 to support the two ends of the inner side of the pallet, thereby straightening the pallet and ensuring that the forks 13 are supported in the middle position of the pallet, while supporting the pallet at the same time;

[0044] 2. When it is necessary to adjust the support range of the abutment block 26 according to different pallet models, the distance between the abutment block 26 and the support block 24 is increased by rotating the screw shaft 28, so that the abutment block 26 can move to a more distant position for support.

[0045] 3. When adjusting the length of the fork 13, the extension section 30 is extended and fixed to the fixed section 31 by the positioning bolt 33 and the positioning screw hole 32, which makes it convenient to adjust the length of the fork 13 according to different pallet models. At this time, the adjusting screw 34 slides in the telescopic sleeve 18.

[0046] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the application involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A forklift fork structure for an unmanned forklift, comprising: The main body (10) and the gantry (11) are characterized in that: An unmanned forklift fork structure also includes: The shelf (12) is lifted and installed on the gantry (11), and the gantry (11) is fixedly installed on the front side of the main body (10); There are two forks (13), which are fixedly mounted on the shelf (12). The lower end of the forks (13) is provided with a support block (24). A drive structure is provided between the shelf (12) and the forks (13); The driving structure includes: Two sliding blocks (23) are slidably disposed inside the fork (13). The two sliding blocks (23) are located on the front and rear sides of the support block (24) respectively. The support block (24) has hinge rods (25) at both ends. One end of the two hinge rods (25) is hinged to the sliding block (23) respectively. An adjusting screw (34) is rotatably disposed inside the fork (13). The adjusting screw (34) passes through the two sliding blocks (23) and is threadedly connected to the two sliding blocks (23). The threads of the two sliding blocks (23) are opposite. When the two sliding blocks (23) approach each other, the two support blocks (24) move away from each other in the left and right directions.

2. The unmanned forklift fork structure according to claim 1, characterized in that: An adjusting motor (14) is fixedly installed on the gantry (11). The power output end of the adjusting motor (14) is fixedly connected to a rotating shaft (15). A fixing part (16) is fixedly connected on the shelf (12). A spline sleeve (17) is rotatably arranged inside the fixing part (16). The rotating shaft (15) passes through the spline sleeve (17) and is slidably connected to the spline sleeve (17). The spline sleeve (17) rotates synchronously with the rotating shaft (15). Two drive shafts (19) are also rotatably arranged inside the fixing part (16). The drive shafts (19) and the spline sleeve (17) are connected to the drive chain (20) through a sprocket.

3. The unmanned forklift fork structure according to claim 2, characterized in that: The fork (13) includes a fixed section (31) fixedly connected to the rack (12) and an extension section (30) slidably disposed on the fixed section (31). The rack (12) is rotatably provided with a telescopic sleeve (18). The telescopic sleeve (18) is sleeved on the adjusting screw (34) and slidably engaged with the adjusting screw (34). The adjusting screw (34) rotates synchronously with the telescopic sleeve (18). One end of the telescopic sleeve (18) is inserted into the fixed part (16) and fixedly connected to a second cone wheel (22). A first cone wheel (21) is fixedly connected to the drive shaft (19). The first cone wheel (21) meshes with the second cone wheel (22) and rotates synchronously.

4. The unmanned forklift fork structure according to claim 3, characterized in that: An abutment block (26) is installed on the support block (24). The abutment block (26) is located on the side of the two support blocks (24) that are far apart from each other. A slide rod (27) is fixedly installed on the abutment block (26) that passes through the support block (24) and slides with the support block (24). A screw shaft (28) is rotatably installed on the abutment block (26). The screw shaft (28) passes through the support block (24) and is threadedly connected to the support block (24).

5. The unmanned forklift fork structure according to claim 4, characterized in that: A baffle plate (29) is fixedly provided on the sliding block (23). The baffle plate (29) abuts against the hinge rod (25) to limit the hinge rod (25), so that the hinge rod (25) has two extreme rotations. The first state is when the two sliding blocks (23) are farthest apart, and the hinge rod (25) abuts against the baffle plate (29). At this time, a certain angle is formed between the two hinge rods (25). The second extreme state is when the two sliding blocks (23) are closest together and the two support blocks (24) are farthest apart.

6. The unmanned forklift fork structure according to claim 4, characterized in that: The slide bar (27) is provided with a scale extending along the slide bar (27), and the distance between the abutment block (26) and the support block (24) can be observed through the scale.

7. The unmanned forklift fork structure according to claim 3, characterized in that: The protruding section (30) is equipped with a positioning bolt (33), and the fixed section (31) is provided with a positioning screw hole (32). One end of the positioning bolt (33) is inserted into the positioning screw hole (32) and threadedly connected to the positioning screw hole (32) to limit the movement of the protruding section (30) and the fixed section (31).

Images