Telescopic structure of three-section type telescopic pallet fork for intelligent vertical warehouse

Abstract

The utility model relates to a telescopic structure of a three-section telescopic pallet fork for an intelligent vertical warehouse. The telescopic structure comprises a driving assembly, a fixed fork, a middle fork and an outer fork. The fixed fork is fixed on the multi-penetrating trolley body, the middle fork is axially and movably arranged on the fixed fork, and the outer fork is axially and movably arranged on the middle fork; the driving assembly is in transmission connection with the middle fork and the outer fork through the transmission assembly so as to drive the middle fork and the outer fork to move in the same direction. According to the technical scheme, the telescopic middle fork is arranged on the fixed fork, and the telescopic outer fork is arranged on the middle fork, so that stretching of the three-layer pallet fork is achieved, and the stroke of the pallet fork is greatly lengthened. According to the scheme, through reasonable structural optimization, the telescopic stroke of the pallet fork is effectively improved, the width size proportion of a vehicle body is reduced, and therefore the space utilization rate of a warehousing system is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent warehousing and logistics, in particular to a telescopic structure of a three-section telescopic fork used in an intelligent vertical warehouse. Background Art

[0002] The automated warehousing system is composed of high-rise shelves, stackers, various types of forklifts, access systems, unmanned transport vehicles, control systems and peripheral equipment. The multi-layer shuttle is an indispensable part of the automated warehousing logistics system. It completes the transportation and storage of goods by traveling back and forth on the tracks of the storage shelves.

[0003] At present, in the warehousing and logistics industry, multi-layer shuttle car dense warehouses have gained market favor due to their high storage density and high space utilization rate. The miniaturization of multi-layer shuttle cars is one of the key points to improve space utilization. However, the existing telescopic forks have a complex structure and large size, which seriously affects the space utilization rate of the automated warehousing system and the work efficiency of handling goods. Utility Model Content

[0004] Based on this, it is necessary to provide a telescopic structure of a three-section telescopic fork for an intelligent vertical warehouse in order to address the problem of low space utilization of existing multi-car telescopic forks.

[0005] A telescopic structure of a three-section telescopic fork for an intelligent vertical warehouse, comprising: a driving assembly, a fixed fork, a middle fork and an outer fork; the fixed fork is fixed to a multi-pass trolley body, the middle fork is axially movably arranged on the fixed fork, and the outer fork is axially movably arranged on the middle fork; the driving assembly is respectively connected to the middle fork and the outer fork through a transmission assembly to drive the middle fork and the outer fork to move in the same direction.

[0006] Furthermore, the fixed fork and the middle fork, and the middle fork and the outer fork are connected via sliding rails.

[0007] Furthermore, the fixed fork is provided with a first slide rail extending axially, a first slide block is fixed on the first surface of the middle fork, and the first slide block is slidably arranged on the first slide rail;

[0008] A second slide rail is disposed on the second surface of the middle fork in the same extending direction as the first slide rail, and the second surface is opposite to the first surface. A second sliding block is disposed on the outer fork, and the second sliding block is slidably disposed on the second slide rail.

[0009] Furthermore, a limiting member is provided on the first slide rail and / or the second slide rail to limit the middle fork and / or the outer fork in the axial direction.

[0010] Furthermore, the driving assembly is arranged at the bottom position of the fixing fork.

[0011] Furthermore, the driving assembly includes a motor, a transmission shaft, a synchronous belt and a synchronous pulley; the motor drives the transmission shaft to rotate, and the synchronous pulley is sleeved on the transmission shaft; the synchronous pulley is connected to the middle fork and the outer fork through the synchronous belt.

[0012] Furthermore, the synchronous belt is a toothed belt meshing with the synchronous belt pulley; and the middle fork and / or the outer fork are provided with tooth patterns meshing with the synchronous belt.

[0013] Furthermore, the driving assembly further comprises at least two belt-pressing wheels, the synchronous belt is meshed with two teeth on the middle fork, and the meshing position of the synchronous belt is limited by the belt-pressing wheels.

[0014] This technical solution, by setting a retractable middle fork on the fixed fork and a retractable outer fork on the middle fork, realizes the telescopic movement of the three-layer fork, greatly lengthening the travel of the fork. This solution effectively improves the telescopic travel of the fork through reasonable structural optimization, reduces the proportion of the vehicle body width, and thus improves the space utilization of the storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall schematic diagram of an embodiment of the utility model in which the forks are in an unfolded state;

[0016] Figure 2 for Figure 1 Exploded diagram of some structures in the figure;

[0017] Figure 3 This is an overall schematic diagram of an embodiment of the utility model in which the forks are in a retracted state;

[0018] Figure 4 for Figure 3 A front view of

[0019] Figure 5 for Figure 2 A schematic diagram of the structure of the fixed fork and the driving assembly;

[0020] Figure 6 for Figure 2 Structural diagram of the middle and outer fork parts;

[0021] Figure 7 for Figure 2 Schematic diagram of the structure of the middle fork part;

[0022] Figure 8 for Figure 2 The structural diagram of the middle linkage component part;

[0023] Figure 9 is Figure 2 a schematic structural view of the cable and the rotating wheel part;

[0024] Figure 10 is a schematic view of the state of the linkage component when the forklift forks extend and retract in the forward and reverse directions;

[0025] Figure 11 is a schematic view of the state of the cable when the forklift forks extend and retract in the forward and reverse directions.

[0026] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Linkage component; 11. Linkage belt; 12. Linkage wheel; 13. Rack; 2. Fixed fork; 21. First slide rail; 3. Middle fork; 31. Through hole groove; 32. First sliding block; 33. Second slide rail; 4. Outer fork; 41. Second sliding block; 5. Drive component; 51. Motor; 52. Transmission shaft; 53. Synchronous belt; 54. Synchronous belt pulley; 55. Belt pressing wheel; 61. Rotating wheel; 62. Cable. Specific embodiments

[0028] To make the above objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the specific details described below are only some embodiments of the present invention, and the present invention can also be implemented in many other embodiments different from those described herein. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] In one embodiment, please refer to the attached Figure 1 to the attached Figure 11As shown, in this embodiment, a telescopic structure of a three-section telescopic fork for an intelligent vertical warehouse is proposed, comprising: a driving assembly 5, a fixed fork 2, a middle fork 3 and an outer fork 4; the fixed fork 2 is fixed to the multi-through trolley body, the middle fork 3 is axially movably arranged on the fixed fork 2, and the outer fork 4 is axially movably arranged on the middle fork 3; the driving assembly 5 is respectively connected to the middle fork 3 and the outer fork 4 through a transmission assembly to drive the middle fork 3 and the outer fork 4 to move in the same direction.

[0032] On the basis of this embodiment, further, the fixed fork 2 and the middle fork 3, and the middle fork 3 and the outer fork 4 are connected by slide rails. Of course, the fixed fork 2 and the middle fork 3, and the middle fork 3 and the outer fork 4 can also be connected in other forms of movement, such as by setting rollers and track structures between each other to achieve the functions of relative displacement, guidance, and positioning, which is not limited to the description in this embodiment.

[0033] On this basis, further, the fixed fork 2 is provided with an axially extending first slide rail 21, a first sliding block 32 is fixed on the first surface of the middle fork 3, and the first sliding block 32 is slidably set on the first slide rail 21; the second surface of the middle fork 3 is provided with a second slide rail 33 extending in the same direction as the first slide rail 21, and the second surface is opposite to the first surface, and the outer fork 4 is provided with a second sliding block 41, and the second sliding block 41 is slidably set on the second slide rail 33. Of course, the setting positions of the above slide rail sliders can also be other, as long as the two sliding blocks can achieve displacement in the same direction, and are not limited to the description in this embodiment.

[0034] It should be noted that the "axial direction" described in this embodiment refers to the direction in which the three-section fork is extended and retracted, which can be forward extension and retracted in the opposite direction. This is also the case in the subsequent description and will not be repeated here.

[0035] On the basis of this embodiment, a limiting member is provided on the first slide rail 21 and / or the second slide rail 33 to limit the middle fork 3 and / or the outer fork 4 in the axial direction. It can be a limiting block or other structure at the end of the slide rail, as long as it can limit the middle fork 3 and the outer fork 4 and prevent the slider from sliding out of the slide rail, and is not limited to the description in this embodiment.

[0036] In this design, in order to save space and prevent the driving component 5 from being hit or bumped, the driving component 5 is arranged at the bottom position of the fixing fork 2 to provide driving force.

[0037] Specifically, the driving assembly 5 includes a motor 51, a transmission shaft 52, a synchronous belt and a synchronous pulley 54; the motor 51 drives the transmission shaft 52 to rotate, and the synchronous pulley 54 is sleeved on the transmission shaft 52; the synchronous pulley 54 is connected to the middle fork 3 and the outer fork 4 through the synchronous belt. Of course, the driving assembly 5 can also be other structures, such as driven by a linear motor 51, a cylinder, etc.

[0038] On this basis, further, the synchronous belt is a toothed belt meshing with the synchronous pulley 54; the middle fork 3 and / or the outer fork 4 are provided with tooth patterns meshing with the synchronous belt. The driving assembly 5 further includes at least two belt pressing wheels 55. The synchronous belt meshes with two tooth patterns on the middle fork 3, and the meshing positions of the synchronous belt are limited by the belt pressing wheels 55.

[0039] It can be understood that the structure of the toothed belt and the belt pressing wheels 55 is used to change the running direction of the synchronous belt and prevent the synchronous belt from slipping relative to the middle fork 3. Of course, the synchronous belt can also be other structures such as a chain structure.

[0040] In this embodiment, in order to prevent slipping and increase the driving force of the middle fork 3, two contact points are provided between the synchronous belt and the middle fork 3 to drive the forward and reverse displacements of the middle fork 3 relative to the fixed fork 2.

[0041] The utility model further includes a linkage assembly 2. The first end of the linkage assembly 1 is arranged between the fixed fork 2 and the middle fork 3, and the second end of the linkage assembly 1 is arranged between the middle fork 3 and the outer fork 4; when the driving assembly 5 drives the middle fork 3 to move relative to the fixed fork 2, the outer fork 4 is driven by the linkage assembly 1 to move in the same direction relative to the middle fork 3. At this time, the moving distance of the outer fork 4 relative to the fixed fork 2 is twice the moving distance of the middle fork 3.

[0042] This technical solution proposes a linkage structure to synchronously link the three-section fork body of the telescopic fork. Through this linkage structure, when the middle fork 3 is driven to move, the outer fork 4 can also be synchronously linked, so that the displacement distance of the outer fork 4 always remains twice the displacement distance of the middle fork 3. This linkage structure is novel in design. Only one set of power structure is required to realize the synchronous telescoping of the middle fork 3 and the outer fork 4, which greatly saves the space of the equipment and lengthens the stroke of the telescopic fork.

[0043] By providing a telescopic middle fork 3 on the fixed fork 2 and a telescopic outer fork 4 on the middle fork 3, the telescoping of the three-layer fork is realized, which greatly lengthens the stroke of the fork. Through reasonable structural optimization, this solution effectively improves the telescopic stroke of the fork, reduces the proportion of the vehicle body width dimension, and thus improves the space utilization rate of the storage system.

[0044] In this embodiment, the linkage assembly 1 includes a linkage belt 11 and two linkage wheels 12 arranged at different positions on the middle fork 3; the linkage belt 11 is wound around the two linkage wheels 12 to form a ring in the axial direction of the middle fork 3; the first end of the linkage belt 11 is connected to the fixed fork 2, and the second end of the linkage belt 11 is connected to the outer fork 4; when the middle fork 3 moves relative to the fixed fork 2, the linkage belt 11 drives the outer fork 4 to move in the same direction relative to the middle fork 3.

[0045] Of course, the form of the linkage component 1 can also be other component structures, such as a structure with a chain and rollers, and the form is not limited to that described in this embodiment.

[0046] It can be understood that through the above linkage component 1, when the middle fork 3 moves forward, the linkage belt 11 drives the outer fork 4 to move forward relative to the middle fork 3 by the same distance. At this time, the moving distance of the outer fork 4 relative to the fixed fork 2 is twice the moving distance of the middle fork 3. When the middle fork 3 is controlled to move backward, the linkage belt 11 drives the outer fork 4 to move backward relative to the middle fork 3 by the same distance. At this time, the moving distance of the outer fork 4 relative to the fixed fork 2 is still twice the moving distance of the middle fork 3.

[0047] On the basis of this embodiment, a rack 13 in the axial direction is provided on one side of the fixed fork 2 facing the middle fork 3, and a rack 13 in the axial direction is also provided on one side of the outer fork 4 facing the middle fork 3; both ends of the linkage belt 11 are respectively engaged with the racks 13 on the fixed fork 2 and the outer fork 4.

[0048] The meshing structure of the rack 13 has the advantages of stability, non-slip, and low cost. Of course, the linkage method of the linkage belt 11 with the fixed fork 2 and the outer fork 4 can also be other, such as using a contact surface material with a large friction force, as long as it ensures that there is enough friction force on the contact surface between the linkage belt 11 and the fixed fork 2 and the outer fork 4 to avoid slipping, and it is not limited to that described in this embodiment; similarly, the installation position of the rack 13 can also be other.

[0049] On this basis, in order to save space, avoid the linkage wheels 12 being interfered and stuck by other components, and ensure the stability of the linkage structure, through holes 31 are respectively opened at both ends of the middle fork 3 in this embodiment, and the two linkage wheels 12 are rotatably arranged in the two through holes 31 respectively; the linkage wheel 12 on one through hole 31 limits one end of the linkage belt 11 to make it engaged with the rack 13 on the fixed fork 2; the linkage wheel 12 on the other through hole 31 limits the other end of the linkage belt 11 to make it engaged with the rack 13 on the outer fork 4.

[0050] This embodiment saves space and avoids interference through a hollow and embedded structure. Of course, the setting of the linkage wheels 12 can also be other, and it is not limited to that described in this embodiment.

[0051] It can be understood that a pressure belt wheel 55 can also be arranged in the linkage belt 11 according to the space layout. On the one hand, it can change the direction of the linkage belt 11, and on the other hand, it can further squeeze and limit it to avoid slipping.

[0052] During the telescopic fork process, the synchronous belt 11 and the rack 13 are meshed, and the synchronous belt and the rack 13 are relatively stationary. During the forward and reverse telescopic fork processes, the contact points between the synchronous belt and the two racks 13 are relatively stationary. At the same time, it can be known that the telescopic speed and stroke of the outer fork 4 are twice that of the middle fork 3. Through the structure of the linkage assembly 1 in this embodiment, the middle fork 3 and the outer fork 4 of the three-section telescopic fork are synchronously linked, which has the advantages of small volume, simple structure, and high reliability.

[0053] In this embodiment, in order to supply power to the load and transmit signals, the device further includes a rotating wheel 61 and a cable 62; the middle fork 3 is axially movably arranged on the fixed fork 2, and the outer fork 4 is axially movably arranged on the middle fork 3; the cable 62 supplies power to the load and / or transmits electrical signals; the rotating wheel 61 is rotatably arranged on the middle fork 3, and the first end of the cable 62 is fixed on the fixed fork 2; the middle part of the cable 62 is wound around the rotating wheel 61 and changes the extension direction through the rotating wheel 61; the second end of the cable 62 is fixed on the outer fork 4.

[0054] It should be noted that in this embodiment, the load is arranged on the outer fork 4, and the load includes a motor 51 and / or a photoelectric sensor.

[0055] Through the layout structure of the cable 62, a new load power supply and signal transmission system for a three-section telescopic fork is realized, which can be hidden in the middle of the fork with extremely small dimensions. For multi-section telescopic forks, the cable 62 of this structure is not stressed during the telescopic operation of the fork, which can ensure the stable state of the cable 62 and will not cause the phenomenon of twisting and cutting of the cable 62, and well guarantees the stability of the load power supply and signal transmission, saving the space of the telescopic fork.

[0056] In this embodiment, in order to facilitate bending and routing and avoid breaking of the cable 62, the cable 62 is a flexible cable 62. And in order to facilitate winding around the rotating wheel 61, increase the friction force, and avoid slipping, the cable 62 is flat.

[0057] In this embodiment, the cable 62 extends in the opposite direction after passing around the rotating wheel 61. Of course, it can also have a certain included angle in its direction, which is not limited by the description in this embodiment.

[0058] On this basis, in order to prevent the cable 62 from falling off the rolling wheel due to excessive telescoping of the middle fork 3 and the outer fork 4, limiters are provided on the fixed fork 2, the middle fork 3 and / or the outer fork 4 to limit the middle fork 3 and / or the outer fork 4 in the axial direction, so that the fixing points of the cable 62 with the fixed fork 2 and the outer fork 4 are on the same side of the rotating wheel 61 to ensure its stability.

[0059] During operation, the part of cable 62 connected to the fixed fork 2 at one end is fixed together without relative friction; a roller with a bearing is installed at the part where the cable 62 contacts the middle fork 3. The cable 62 is half-wound around the roller. Because of the bearing, it can rotate freely. Therefore, during the contact process, the contact point between the cable 62 and the roller is relatively stationary and frictionless; for the connection part of the cable 62 and the outer fork 4: the cable 62 and the outer fork 4 are relatively fixed without relative friction.

[0060] In the forklift linkage structure, the fixed fork 2 remains stationary, the middle fork 3 expands and contracts with the power output, and the outer fork 4 will expand and contract due to the expansion and contraction of the middle fork 3. At the same time, the expansion and contraction stroke and speed of the outer fork 4 are twice that of the middle fork 3. It can be obtained that the length of the cable 62 between the two fixed points in the forklift system always remains the same during the process of expanding and contracting the forks. Because the connection part with the middle fork 3 is a roller with a bearing and the roller can rotate freely, that is, the whole cable 62 is not stressed and can be regarded as a stable state, which can provide stable power input and signal transmission for the terminal load. Through the above results, a reasonable layout of the cable 62 is achieved, the space is utilized reasonably, and there is no folding or interference of the cable 62 throughout the process, ensuring the stable operation of the equipment.

[0061] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0062] The above-described embodiments only express several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, substitutions and improvements can still be made, and these should all be covered within the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be based on the claims.

Claims

1. A telescopic structure of a three - section telescopic fork for an intelligent automated storage and retrieval system, characterized in that, include: A driving assembly, a fixed fork, a middle fork and an outer fork; the fixed fork is fixed on the multi-thread trolley body, the middle fork is axially movably arranged on the fixed fork, and the outer fork is axially movably arranged on the middle fork; the driving assembly is respectively connected to the middle fork and the outer fork through a transmission assembly to drive the middle fork and the outer fork to move in the same direction.

2. The telescopic structure of the three-section telescopic forklift for an intelligent automated storage and retrieval system according to claim 1, wherein The fixed fork and the middle fork, and the middle fork and the outer fork are all connected via sliding rails.

3. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 2, wherein, The fixed fork is provided with a first slide rail extending axially, and a first slide block is fixed on the first surface of the middle fork, and the first slide block is slidably arranged on the first slide rail; A second slide rail is disposed on the second surface of the middle fork in the same extending direction as the first slide rail, and the second surface is opposite to the first surface. A second sliding block is disposed on the outer fork, and the second sliding block is slidably disposed on the second slide rail.

4. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 3, characterized in that, The first slide rail and / or the second slide rail are provided with a limiting member to limit the middle fork and / or the outer fork in the axial direction.

5. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 1, characterized in that, The driving assembly is arranged at the bottom of the fixing fork.

6. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 1, characterized in that, The driving assembly includes a motor, a transmission shaft, a synchronous belt and a synchronous pulley; the motor drives the transmission shaft to rotate, and the synchronous pulley is sleeved on the transmission shaft; the synchronous pulley is connected to the middle fork and the outer fork through the synchronous belt.

7. The telescopic structure of the three-section telescopic forklift for an intelligent automated storage and retrieval system according to claim 6, characterized in that, The synchronous belt is a toothed belt meshed with the synchronous belt pulley; the middle fork and / or the outer fork are provided with tooth patterns meshed with the synchronous belt.

8. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 7, characterized in that, The driving assembly further comprises at least two belt-pressing wheels, the synchronous belt is meshed with two tooth patterns on the middle fork, and the meshing position of the synchronous belt is limited by the belt-pressing wheels.

9. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 1, characterized in that, It also includes a linkage component, a first end of which is arranged between the fixed fork and the middle fork, and a second end of which is arranged between the middle fork and the outer fork; when the middle fork moves relative to the fixed fork, the linkage component drives the outer fork to move in the same direction relative to the middle fork.

10. The telescopic structure of the three-section telescopic fork for an intelligent automated storage and retrieval system according to claim 9, wherein, The linkage assembly includes a linkage belt and two linkage wheels arranged at different positions on the middle fork; the linkage belt is wound around the two linkage wheels to form a ring in the axial direction of the middle fork; the first end of the linkage belt is connected to the fixed fork, and the second end of the linkage belt is connected to the outer fork; when the middle fork moves relative to the fixed fork, the linkage belt drives the outer fork to move in the same direction relative to the middle fork.

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