Single-motor double-extension-position telescopic pallet fork

Abstract

The utility model provides a single-motor double-stretching-position telescopic pallet fork. The single-motor double-stretching-position telescopic pallet fork comprises a driving assembly and two fork bodies. The fork body comprises an upper fork assembly, a first middle fork assembly, a second middle fork assembly and a lower fork assembly. The first middle fork assembly is sleeved with the upper fork assembly, the second middle fork assembly is sleeved with the first middle fork assembly, and the lower fork assembly is sleeved with the second middle fork assembly. The driving assembly and the fork body are installed in a combined mode, the gear assembly is installed in the fork body, the driving assembly comprises a servo motor, a speed reducer, a gearbox assembly and a control system, the servo motor is in transmission connection with the speed reducer, the speed reducer is in transmission connection with the gearbox assembly, the gearbox assembly is in transmission connection with the gear assembly, and the control system controls the working state of the driving assembly. According to the single-motor double-stretching-position telescopic pallet fork, on the premise that high bearing and high stability are guaranteed, the function that the single motor drives the double fork bodies to stretch out and draw back is achieved, the goods storing and taking efficiency is higher, the occupied area and energy consumption of equipment are smaller, and the adaptability to complex storage scenes is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of automated warehousing and logistics, and more precisely to a single-motor double-extension telescopic fork. Background Technology

[0002] With the rapid development of global e-commerce, intelligent manufacturing, and supply chain digitalization, the logistics industry has placed higher demands on the efficiency, flexibility, and reliability of warehousing equipment. Automated storage and retrieval systems (AS / RS), as a core node in modern logistics, urgently need more efficient and economical cargo storage and retrieval equipment.

[0003] Traditional telescopic forks typically employ a single-motor single-extension design or a dual-motor dual-extension design. These designs suffer from efficiency bottlenecks when handling scenarios with multiple rows of racks on the same side and high-frequency goods access, and are also structurally complex and energy-intensive. The single-motor single-extension design has the following drawbacks: First, it requires multiple adjustments to the position when accessing multiple rows of racks on the same side, resulting in low efficiency and failing to meet current high-efficiency requirements. Second, traditional forks are bulky, and their drive systems rely on multiple motors or complex transmission chains, leading to high equipment costs, complex maintenance, and significant energy consumption and carbon emissions. Third, in scenarios with limited warehouse space and high cargo throughput, traditional forks lack sufficient load-bearing capacity and stability, easily leading to failure risks. Dual-motor dual-extension designs attempt to solve these problems through multi-motor drives or redundant structures, but they introduce new drawbacks such as soaring costs, poor control coordination, and large space requirements.

[0004] In summary, there is a need in this field for a solution that can achieve synchronous telescopic extension and retraction of dual forks driven by a single motor while ensuring high load capacity and high stability, so as to improve the efficiency of goods storage and retrieval, reduce equipment footprint and energy consumption, and enhance adaptability to complex warehousing scenarios. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a single-motor double-extension telescopic fork, which is combined with a stacker crane to realize the function of picking up and placing goods on both sides of the stacker crane in an automated warehouse, so as to realize the automatic picking and placing of goods in the automated warehouse with only one fork.

[0006] To achieve the above objectives, this utility model provides a single-motor double-extension telescopic fork, comprising a drive assembly and two fork bodies; each fork body includes an upper fork assembly, a first middle fork assembly, a second middle fork assembly, and a lower fork assembly; the upper fork assembly is sleeved outside the first middle fork assembly, the first middle fork assembly is sleeved outside the second middle fork assembly, and the second middle fork assembly is sleeved outside the lower fork assembly; the drive assembly is coupled and installed with the fork bodies, and a gear assembly is installed inside the fork bodies; the drive assembly includes a servo motor, a reducer, a gearbox assembly, and a control system; the servo motor is drive-connected to the reducer, the reducer is drive-connected to the gearbox assembly, the gearbox assembly is drive-connected to the gear assembly, and the control system controls the working state of the drive assembly.

[0007] Preferably, the upper fork assembly is sleeved on the outside of the first middle fork assembly via an upper fork roller and a guide block, the first middle fork assembly is sleeved on the outside of the second middle fork assembly via a roller and a guide block mounted on the second middle fork assembly, and the second middle fork assembly is sleeved on the outside of the lower fork assembly via a roller and a guide block mounted on the lower fork assembly.

[0008] Preferably, the upper fork assembly and the second middle fork assembly are connected together by means of two left and right plate chains wound around the sprockets in the first middle fork assembly.

[0009] Preferably, the first center fork assembly and the lower fork assembly are connected together by means of two left and right plate chains wound around the sprockets in the second center fork assembly.

[0010] Preferably, the walking speed of the upper fork assembly is 1.5 times that of the first middle fork assembly, and the walking speed of the upper fork assembly is 3 times that of the second middle fork assembly.

[0011] Preferably, a torque limiter is installed on the output shaft of the reducer, and the torque limiter is connected to the gearbox assembly via a chain.

[0012] Preferably, the gearbox assembly includes a first gearbox and a second gearbox respectively installed below the two forks, the first gearbox and the second gearbox being connected by a universal joint, and the first gearbox and the second gearbox being drivenly connected to the gear assembly inside the corresponding fork body; the torque limiter is drivenly connected to the large sprocket installed on the first gearbox via a chain.

[0013] Preferably, the gear assembly includes a large gear and a small gear arranged side by side and spaced apart, and the large gear and the small gear mesh with each other. The small gear meshes with a gear in the first gearbox or the second gearbox, and the large gear meshes with a long rack installed in the second middle fork assembly.

[0014] Preferably, the gear assembly has independent sprocket racks at both ends, and the second fork assembly has a sprocket and chain assembly installed inside, the sprocket and chain assembly including a sprocket, and the sprocket rack meshing with the sprocket.

[0015] Preferably, the long rack meshes with the gear assembly in the lower fork assembly, and sprockets are respectively provided at both ends of the second middle fork assembly, with a chain connected end to end installed between the two sprockets.

[0016] Compared with the prior art, the advantages of the single-motor double-extension telescopic fork disclosed in this utility model are: the single-motor double-extension telescopic fork can realize the function of single-motor driving double fork extension and retraction while ensuring high load and high stability, resulting in higher cargo storage and retrieval efficiency, smaller equipment footprint and energy consumption, and stronger adaptability to complex warehousing scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] like Figure 1 The diagram shown is a structural schematic of a single-motor double-extension telescopic fork according to this application.

[0019] like Figure 2 The diagram shown is a structural schematic of a single-motor double-extension telescopic fork according to this application.

[0020] like Figure 3 The diagram shown is a structural schematic of a single-motor double-extension telescopic fork according to this application.

[0021] like Figure 4 The image shown is a partial front sectional view of a single-motor double-extension telescopic fork according to this application.

[0022] like Figure 5 The image shown is a partial front sectional view of a single-motor double-extension telescopic fork according to this application.

[0023] Reference numerals: 1. Fork body, 2. Universal joint, 3. Drive assembly, 4. Servo motor, 5. Reducer, 6. Torque limiter, 7. Large sprocket, 8. First gearbox, 9. Second gearbox, 10. Gear assembly, 11. Long rack, 12. Sprocket, 13. Sprocket and chain assembly, 14. Short rack, 15. Upper fork assembly, 16. First middle fork assembly, 17. Second middle fork assembly, 18. Lower fork assembly, 19. Upper fork roller, 20. Plate chain, 21. Fly sprocket, 22. Sprocket short rack, 23. Large gear, 24. Small gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 4 As shown, this application discloses a single-motor double-extension telescopic fork comprising two fork bodies 1 and a drive assembly 3. The fork body 1 includes an upper fork assembly 15, a first middle fork assembly 16, a second middle fork assembly 17, and a lower fork assembly 18. The upper fork assembly 15 is sleeved outside the first middle fork assembly 16, the first middle fork assembly 16 is sleeved outside the second middle fork assembly 17, and the second middle fork assembly 17 is sleeved outside the lower fork assembly 18. The drive assembly 3 is installed in conjunction with the fork body 1. A gear assembly 10 is installed inside the fork body 1. The drive assembly 3 includes a servo motor 4, a reducer 5, a gearbox assembly, and a control system. The servo motor 4 is driven by the reducer 5, the reducer 5 is driven by the gearbox assembly, and the gearbox assembly is driven by the gear assembly 10. The control system controls the working state of the drive assembly 3. The servo motor 4 drives the reducer 5, which in turn drives the gear assembly 10 via the gearbox assembly. The gear assembly 10 transmits power to the two fork bodies 1, causing them to extend and retract synchronously. The single-motor dual-extension telescopic fork can achieve the function of single-motor driving the extension and retraction of the dual forks while ensuring high load capacity and high stability. This results in higher cargo storage and retrieval efficiency, smaller equipment footprint and energy consumption, and stronger adaptability to complex warehousing scenarios.

[0026] Specifically, the upper fork assembly 15 is sleeved on the outside of the first middle fork assembly 16 via the upper fork roller 19 and the guide block. The first middle fork assembly 16 is sleeved on the outside of the second middle fork assembly 17 via the roller and the guide block mounted on the second middle fork assembly 17. The second middle fork assembly 17 is sleeved on the outside of the lower fork assembly 18 via the roller and the guide block mounted on the lower fork assembly 18. The upper fork assembly 15, the first middle fork assembly 16, the second middle fork assembly 17, and the lower fork assembly 18 slide relative to each other via rollers and guide blocks. The rollers and guide blocks are support and guide devices, providing support and guidance. The support and guide devices of the upper fork assembly 15 are located on the inner wall of the upper fork, the support and guide devices of the second middle fork assembly 17 are located on the inner wall of the second middle fork, and the support and guide devices of the lower fork assembly 18 are located on the outer wall of the lower fork. The outer side of the first middle fork assembly 16 has a bearing groove for installing the upper fork support and guide devices, the inner side of the first middle fork assembly 16 has a bearing groove for installing the second middle fork support and guide devices, and the inner side of the second middle fork has a bearing groove for installing the lower fork assembly 18 support and guide devices.

[0027] Specifically, the upper fork assembly 15 and the second middle fork assembly 17 are connected together by two left and right plate chains 20 wound around the sprocket 21 in the first middle fork assembly 16, forming a primary loop.

[0028] The first middle fork assembly 16 and the lower fork assembly 18 are connected together by two left and right plate chains 20 wound around the sprocket 21 in the second middle fork assembly 17, forming a two-stage loop.

[0029] The lower fork assembly 18 is fixedly mounted on the stacker crane's loading platform. The drive assembly 3 drives the upper fork assembly 15, the first middle fork assembly 16, and the second middle fork assembly 17 to move through the gear assembly 10 inside the lower fork assembly 18. The moving speed of the upper fork assembly 15 is 1.5 times that of the first middle fork assembly 16, and the moving speed of the upper fork assembly 15 is 3 times that of the second middle fork assembly 17.

[0030] A torque limiter 6 is installed on the output shaft of the reducer 5. The torque limiter 6 is connected to the gearbox assembly via a chain. The gearbox assembly includes a first gearbox 8 and a second gearbox 9, which are respectively installed below the two forks 1. The first gearbox 8 and the second gearbox 9 are connected by a universal joint 2. The first gearbox 8 and the second gearbox 9 are respectively connected to the gear assemblies 10 inside the corresponding forks 1. The torque limiter 6 is connected to the large sprocket 7 installed on the first gearbox 8 via a chain. The first gearbox 8 transmits power to the second gearbox 9 via the universal joint 2. The first gearbox 8 and the second gearbox 9 synchronously drive the two forks 1 to move.

[0031] Specifically, the end gears of the gear assembly 10 mesh with the first gearbox 8 and the second gearbox 9 respectively, thereby transferring the power of the gearbox to the gear assembly 10, and the gears in the gear assembly 10 mesh stably with each other for synchronous transmission.

[0032] The gear assembly 10 includes a large gear 23 and a small gear 24 arranged side-by-side and spaced apart, with the large gear 23 and small gear 24 meshing with each other. The small gear 24 meshes with a gear in the first gearbox 8 or the second gearbox 9, and the large gear 23 meshes with a long rack 11 installed in the second fork assembly 17. Independent sprocket racks 22 are respectively provided at both ends of the gear assembly 10. A sprocket and chain assembly 13 is installed inside the second fork assembly 17, including a sprocket 12, with the sprocket rack 22 meshing with the sprocket 12. When the large gear 23 in the gear assembly 10 drives the long rack 11, the sprocket rack 22 is fixed, and the second fork assembly 17 drives the sprocket and chain assembly 13 to move relative to each other.

[0033] The long rack 11 meshes with the gear assembly 10 inside the lower fork assembly 18, transmitting power to the second middle fork assembly 17. The second middle fork assembly 17 has sprockets 12 at both ends, each with adjustable tension. A chain, connected end-to-end, is installed between the two sprockets 12. The first middle fork assembly 16 has short racks 14 at both ends, which simultaneously mesh with the sprocket and chain assembly 13. Simultaneously, the first middle fork assembly 16 has two sets of freewheels 21. One end of a plate chain 20 is fixed to the upper fork assembly 15, and the other end is fixed to the second middle fork assembly 17. The two sets of freewheels 21 are diagonally designed at both ends of the first middle fork assembly 16. The plate chain 20 wraps around the freewheels 21 on the first middle fork assembly 16, connecting the upper fork assembly 15 and the second middle fork assembly 17. Combined with the sprocket 12 transmission, the power from the second middle fork assembly 17 can be transmitted to the upper fork assembly 15 through the first middle fork assembly 16, thus completing the entire kinetic energy transfer.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single motor dual reach position telescopic fork, characterized in that, The device includes a drive assembly and two forks. Each fork includes an upper fork assembly, a first middle fork assembly, a second middle fork assembly, and a lower fork assembly. The upper fork assembly is sleeved on the outside of the first middle fork assembly, the first middle fork assembly is sleeved on the outside of the second middle fork assembly, and the second middle fork assembly is sleeved on the outside of the lower fork assembly. The drive assembly is installed in conjunction with the fork assembly. A gear assembly is installed inside the fork assembly. The drive assembly includes a servo motor, a reducer, a gearbox assembly, and a control system. The servo motor is driven by the reducer, the reducer is driven by the gearbox assembly, the gearbox assembly is driven by the gear assembly, and the control system controls the working state of the drive assembly.

2. The single motor double reach telescopic fork according to claim 1, wherein, The upper fork assembly is sleeved on the outside of the first middle fork assembly via an upper fork roller and a guide block. The first middle fork assembly is sleeved on the outside of the second middle fork assembly via a roller and a guide block mounted on the second middle fork assembly. The second middle fork assembly is sleeved on the outside of the lower fork assembly via a roller and a guide block mounted on the lower fork assembly.

3. The single motor, double reach, telescoping fork as described in claim 1, wherein, The upper fork assembly and the second middle fork assembly are connected together by two left and right plate chains wound around the sprockets in the first middle fork assembly.

4. The single motor, double-extended telescoping fork as described in claim 1, wherein, The first middle fork assembly and the lower fork assembly are connected together by two left and right plate chains wound around the sprockets in the second middle fork assembly.

5. The single motor, double-extended telescoping fork as described in claim 1, wherein, The walking speed of the upper fork assembly is 1.5 times that of the first middle fork assembly, and the walking speed of the upper fork assembly is 3 times that of the second middle fork assembly.

6. The single motor, double-extended telescoping fork as described in claim 1, wherein, A torque limiter is installed on the output shaft of the reducer, and the torque limiter is connected to the gearbox assembly via a chain.

7. The single motor, double-extended telescoping fork as described in claim 6, wherein, The gearbox assembly includes a first gearbox and a second gearbox respectively installed below the two forks. The first gearbox and the second gearbox are connected by a universal joint. The first gearbox and the second gearbox are respectively connected to the gear assembly inside the corresponding fork body. The torque limiter is connected to the large sprocket installed on the first gearbox via a chain.

8. The single motor, double-extended telescoping fork according to claim 7, wherein, The gear assembly includes a large gear and a small gear arranged side by side at intervals, and the large gear and the small gear mesh with each other. The small gear meshes with a gear in the first gearbox or the second gearbox, and the large gear meshes with a long rack installed in the second middle fork assembly.

9. The single motor, double-extended telescoping fork as described in claim 8, wherein, The gear assembly has independent sprocket short racks at both ends. The second fork assembly has a sprocket and chain assembly installed inside. The sprocket and chain assembly includes a sprocket, and the sprocket short rack meshes with the sprocket.

10. The single motor, double-extended telescoping fork according to claim 9, wherein, The long rack meshes with the gear assembly in the lower fork assembly, and sprockets are respectively provided at both ends of the second middle fork assembly. A chain connected end to end is installed between the two sprockets.

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