Wide-section single-depth plate type telescopic fork

Abstract

The utility model discloses a wide-section single deep position plate type telescopic fork which comprises an upper fork assembly, a middle fork assembly and a lower fork assembly which are movably connected in sequence, the middle fork assembly comprises a middle fork body, a rack and a flying chain wheel, the rack is installed on the lower surface of the middle fork body, and the flying chain wheel is installed on the middle fork body through a flying chain wheel installation base. First sliding rails are arranged on the two sides of the middle fork body in the length direction of the middle fork body, the lower fork assembly comprises a lower fork bottom plate and lower fork side plates, the lower fork side plates are installed on the upper surface of the lower fork bottom plate in pairs, and a plurality of first guide wheels and a plurality of first guide blocks are arranged on the opposite sides of the two lower fork side plates. The first guide wheels and the first guide blocks are used in cooperation with the first sliding rails. By adopting the upper fork panel in a wide plate type design and arranging the upper fork side plates below the upper fork panel, the whole pallet can be more stably borne, the risk that goods incline or fall is reduced, and the pallet is suitable for carrying goods which are tightly stacked or need additional stability.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic fork manufacturing, in particular to a single-depth plate type telescopic fork with a wide cross-section. Background Art

[0002] In recent years, with the continuous expansion of the logistics industry, logistics management methods and technologies have been continuously improved and enhanced. Shortening logistics time, saving logistics costs, improving logistics efficiency, and rationalizing logistics organization are common characteristics of logistics development in economically developed countries. Currently, modern logistics infrastructure is in place. Automated high-bay warehouse systems are a key component of modern logistics systems and are widely used across various industries. Currently, the industry lacks a highly stable, high-speed, and high-load telescopic fork designed for tightly stacked goods and confined transport space. A telescopic fork is a core component of the automated high-bay warehouse, enabling fully automated storage of goods. It comprises an upper fork assembly, a middle fork assembly, a lower fork assembly, a drive motor, a transmission assembly, a tensioner assembly, and electrical control components.

[0003] There are usually two solutions for forks in the market when inserting pallet cargo: one is to use a double-fork structure, but the synchronization between the two forks is a technical challenge; the other is to use a conventional cross-section single fork with a steel plate on the surface. This structure has poor stability and the risk of cargo overturning.

[0004] Therefore, how to solve the deficiencies in the above-mentioned prior art has become the subject to be studied and solved in this application. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a single-depth plate type telescopic fork with a wide cross-section.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A single-depth plate-type telescopic fork with a wide cross-section, comprising an upper fork assembly, a middle fork assembly, and a lower fork assembly movably connected in sequence; the middle fork assembly comprising a middle fork body, a rack, and a fly sprocket, the rack being mounted on the lower surface of the middle fork body, the fly sprocket being mounted on the middle fork body via a fly sprocket mounting seat, and the middle fork body being provided with first slide rails on both sides along its length;

[0008] The gear assembly comprises a lower fork bottom plate and a lower fork side plate, the lower fork side plates are mounted in pairs on the upper surface of the lower fork bottom plate, the length direction of the lower fork side plates is in the same direction as the length direction of the lower fork bottom plate, the two lower fork side plates are respectively arranged on both sides close to the length direction of the lower fork bottom plate, a plurality of first guide wheels and a plurality of first guide blocks are provided on opposite sides of the two lower fork side plates, each of the first guide wheels and each of the first guide blocks are used in conjunction with the first slide rail; a gear assembly is mounted on the lower fork bottom plate between the two lower fork side plates, the gear assembly comprises a gear, a gear side plate and a splint, the gear side plates are mounted in pairs on the upper surface of the lower fork bottom plate, the gears are sequentially mounted between the two gear side plates, each gear is connected to the rack, and the splint is mounted between the two gear side plates;

[0009] A transmission member is installed on the lower fork base plate, and the gear is connected to the drive motor through the transmission member. The drive motor drives the gear to rotate, and the gear drives the middle fork body to reciprocate on the lower fork base plate through the rack; a chain tensioner is installed on the lower fork base plate, and the chain tensioner is connected to the upper fork assembly through a chain, and the chain is wound around the flying sprocket.

[0010] Furthermore, the upper fork assembly includes an upper fork panel and multiple upper fork side panels, and the upper fork side panels are sequentially installed on the lower surface of the upper fork panel. The length direction of each upper fork side panel is the same as the length direction of the upper fork panel, and each upper fork side panel is installed with multiple second guide wheels and multiple second guide blocks.

[0011] Furthermore, a plurality of second slide rails are provided on the upper surface of the middle fork body along its length direction, and each of the second slide rails is used in conjunction with the second guide wheel and the second guide block.

[0012] Furthermore, the first slide rail and the second slide rail are H-shaped slide rails.

[0013] Furthermore, a sliding groove is provided on the lower surface of the middle fork body along its length direction, and a first limiting block is provided in the sliding groove.

[0014] Furthermore, a plurality of eccentric wheels are provided on the upper surface of the lower fork bottom plate, and each of the eccentric wheels is used in conjunction with the slide groove; a second limit block is installed at the eccentric wheel.

[0015] Furthermore, the upper fork panel is a rectangular plate.

[0016] Furthermore, an encoder and a switch assembly are installed on the lower fork base plate.

[0017] Compared with the prior art, the advantages of the present invention are: by adopting an upper fork panel with a wide plate design and arranging the upper fork side panels below the upper fork panel, the entire pallet can be carried more stably, reducing the risk of cargo tilting or falling, and is suitable for transporting cargo that is tightly stacked or requires additional stability. The lower fork assembly adopts a box-type structure, which enhances the support for the upper fork assembly and the middle fork assembly, and improves the insertion and transportation stability. A gear system is used for transmission during the power transmission process, which is simple to assemble, compact in structure, and reliable in strength. The present application provides a new type of pallet fork with high space utilization and high performance, which has a wider cross-section and a stronger load capacity, thereby improving the density and specifications of cargo in the warehouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Attachment Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0020] Attachment Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0021] Attachment Figure 3 This is a schematic structural diagram of the upper fork assembly according to an embodiment of the present application;

[0022] Attachment Figure 4 This is a schematic structural diagram of a fork assembly in an embodiment of the present application;

[0023] Attachment Figure 5 This is a schematic structural diagram of the flying sprocket according to an embodiment of the present application;

[0024] Attachment Figure 6 This is a schematic structural diagram of the lower fork assembly according to an embodiment of the present application.

[0025] Description of reference numerals and components in the accompanying drawings:

[0026] 1. Upper fork assembly; 11. Upper fork panel; 12. Upper fork side plate; 13. Second guide wheel; 14. Second guide block; 2. Middle fork assembly; 21. Middle fork body; 22. Rack; 23. Flying sprocket; 24. Flying sprocket mounting seat; 25. First slide rail; 26. Second slide rail; 27. Slide groove; 28. First limit block; 3. Lower fork assembly; 31. Lower fork bottom plate; 32. Lower fork side plate; 33. First guide wheel; 34. First guide block; 4. Gear assembly; 41. Gear; 42. Gear side plate; 43. Clamp; 5. Transmission member; 6. Drive motor; 7. Chain tensioner; 8. Eccentric wheel; 81. Second limit block; 9. Encoder; 10. Switch assembly. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solution of the present invention through specific implementation methods. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] See attached Figures 1 to 6 As shown, the present application discloses a wide-section, single-depth plate-type telescopic fork comprising an upper fork assembly 1, a middle fork assembly 2, and a lower fork assembly 3, which are movably connected in sequence. The purpose of this application is to provide a new type of pallet fork with high space utilization and high performance, featuring a wide cross-section and a strong load capacity, while also improving warehouse cargo density and cargo specifications. Through preliminary market analysis, the key parameters of the fork are determined; by studying the advantages and disadvantages of existing fork structures, leveraging their strengths to overcome their weaknesses, the design of the various fork components is rationally optimized, ensuring that the fork has sufficient stability to handle large loads and accelerations. The upper fork assembly 1 includes an upper fork panel 11 and four upper fork side panels 12. The four upper fork side panels 12 are fixed in pairs on the lower surface of the upper fork panel 11. Each upper fork side panel 12 is arranged in a vertical direction. The length direction of each upper fork side panel 12 is in the same direction as the length direction of the upper fork panel 11. A plurality of second guide wheels 13 and a plurality of second guide blocks 14 are installed on the side of each upper fork side panel 12. Each second guide wheel 13 and each second guide block 14 are located on the same horizontal line. The second guide wheels 13 and second guide blocks 14 on the two upper fork side panels 12 arranged in pairs are located on the side away from each other. The upper fork panel 11 adopts a wide plate design. The four upper fork side panels 12 are arranged on the lower surface of the upper fork panel 11. It can more stably carry the entire pallet, reduce the risk of cargo tilting or falling, and is suitable for carrying cargo that is tightly stacked or requires additional stability.

[0029] The middle fork assembly 2 includes a middle fork body 21, a rack 22, and a fly sprocket 23. The rack 22 is fixed to the lower surface of the middle fork body 21. The middle fork body 21 has a through hole, and a fly sprocket mounting seat 24 is installed in the through hole. The fly sprocket 23 is mounted on the middle fork body 21 via the fly sprocket mounting seat 24. The middle fork body 21 has first slide rails 25 provided on both sides along its length. Two second slide rails 26 are installed along its length on the upper surface of the middle fork body 21. Each second slide rail 26 cooperates with the second guide wheel 13 and second guide block 14 on each pair of upper fork side panels 12. The second guide wheel 13 and second guide block 14 slide on the second slide rail 26, causing the upper fork panel 11 to reciprocate on the middle fork body 21. Two slide grooves 27 are also provided on the lower surface of the middle fork body 21 along its length. First limit blocks 28 are installed in the slide grooves 27.

[0030] The lower fork assembly 3 includes a lower fork base plate 31 and lower fork side plates 32. The lower fork side plates 32 are fixed in pairs to the upper surface of the lower fork base plate 31. The length direction of the lower fork side plates 32 is the same as the length direction of the lower fork base plate 31. The two lower fork side plates 32 are respectively arranged on both sides of the length direction of the lower fork base plate 31. A plurality of first guide wheels 33 and a plurality of first guide blocks 34 are arranged on opposite sides of the two lower fork side plates 32. Each first guide wheel 33 and each first guide block 34 cooperates with the first slide rail 25 on both sides of the middle fork body 21. The middle fork body 21 reciprocates on the lower fork base plate 31 via each first guide wheel 33 and each first guide block 34. The lower fork assembly 3 is a box-type structure that can enhance the support for the upper fork assembly 1 and the middle fork assembly 2, thereby improving the insertion, removal and transportation stability. A gear assembly 4 is installed on the lower fork base plate 31 between the two lower fork side plates 32. The gear assembly 4 includes a gear 41, a gear side plate 42 and a splint 43. The gear side plates 42 are installed in pairs on the upper surface of the lower fork base plate 31 along the vertical direction. The length direction of the gear side plates 42 is in the same direction as the length direction of the lower fork side plates 32. A plurality of rotating shafts are installed in sequence between the two lower fork side plates 32. Each rotating shaft is provided with a gear 41. The gears 41 are arranged in sequence between the two gear side plates 42. The gears 41 are meshed with each other. Each gear 41 is connected to the rack 22 on the lower surface of the middle fork body 21. The splint 43 is also fixed between the two gear side plates 41.

[0031] A transmission member 5 is mounted on the lower fork base plate 31 and is in driving connection with the output shaft of the drive motor 6. The transmission member 5 is also rotationally connected to a gear 41. The drive motor 6 drives the gear 41 to rotate, which in turn drives the middle fork body 21 through the rack 22 to reciprocate on the lower fork base plate 31. The power transmission system of this application utilizes a gear train, resulting in simple assembly, compact structure, and reliable strength. The use of a large-sized gear 41 and rack 22 allows for operation under higher loads and acceleration conditions, shortening handling cycles.

[0032] A chain tensioner 7 is mounted on the lower fork base plate 31, connected to the upper fork panel 11 via a chain, which is wound around the fly sprocket 23. After the fork is secured to the stacker's cargo platform via the lower fork base plate 31, the drive motor 6 is energized. The output shaft of the drive motor 6 rotates, driving the gear 41 meshing with it through the transmission member 5. The gear 41 pushes the rack 22 in the middle fork assembly 2, causing the middle fork assembly 2 to extend and retract as a whole. The fly sprocket 23 in the middle fork assembly 2 pushes the chain of the chain tensioner 7, causing the upper fork assembly 1 and the middle fork assembly 2 to extend and retract relative to each other, thereby enabling the operation of the fork.

[0033] Better, see attached Figure 1 , Attachment Figure 2 and attached Figure 6 As shown, in this embodiment, four eccentrics 8 are provided on the upper surface of the lower fork base plate 31. Each eccentric 8 cooperates with the slide groove 27 on the lower surface of the middle fork body 21. Adding four independent sets of eccentrics 8 optimizes the deflection during load extension. A second limit block 81 is installed on each set of eccentrics 8.

[0034] Better, see attached Figure 1 and attached Figure 2 In this embodiment, an encoder 9 and a switch assembly 10 are installed on the lower fork base plate 31. In terms of control, the switch assembly 10 is responsible for monitoring whether the upper fork assembly 1 is back to the center. The encoder 9 controls the left and right telescopic distance of the fork.

[0035] The above description of the disclosed embodiments will enable those skilled in the art to implement 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 limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single-depth plate type telescopic fork with a wide cross section, characterized in that: The invention comprises an upper fork assembly, a middle fork assembly and a lower fork assembly which are movably connected in sequence; the middle fork assembly comprises a middle fork body, a rack and a fly sprocket, the rack is mounted on the lower surface of the middle fork body, the fly sprocket is mounted on the middle fork body through a fly sprocket mounting seat, and the middle fork body is provided with a first slide rail on both sides along its length direction; The gear assembly comprises a lower fork bottom plate and a lower fork side plate, the lower fork side plates are mounted in pairs on the upper surface of the lower fork bottom plate, the length direction of the lower fork side plates is in the same direction as the length direction of the lower fork bottom plate, the two lower fork side plates are respectively arranged on both sides close to the length direction of the lower fork bottom plate, a plurality of first guide wheels and a plurality of first guide blocks are provided on opposite sides of the two lower fork side plates, each of the first guide wheels and each of the first guide blocks are used in conjunction with the first slide rail; a gear assembly is mounted on the lower fork bottom plate between the two lower fork side plates, the gear assembly comprises a gear, a gear side plate and a splint, the gear side plates are mounted in pairs on the upper surface of the lower fork bottom plate, the gears are sequentially mounted between the two gear side plates, each gear is connected to the rack, and the splint is mounted between the two gear side plates; A transmission member is installed on the lower fork base plate, and the gear is connected to the drive motor through the transmission member. The drive motor drives the gear to rotate, and the gear drives the middle fork body to reciprocate on the lower fork base plate through the rack; a chain tensioner is installed on the lower fork base plate, and the chain tensioner is connected to the upper fork assembly through a chain, and the chain is wound around the flying sprocket.

2. A single-depth plate type telescopic fork with a wide cross section according to claim 1, characterized in that: The upper fork assembly includes an upper fork panel and multiple upper fork side panels, which are sequentially installed on the lower surface of the upper fork panel. The length direction of each upper fork side panel is the same as the length direction of the upper fork panel, and each upper fork side panel is installed with multiple second guide wheels and multiple second guide blocks.

3. A single-depth plate type telescopic fork with a wide cross section according to claim 2, characterized in that: A plurality of second slide rails are provided on the upper surface of the middle fork body along its length direction, and each of the second slide rails is used in conjunction with the second guide wheel and the second guide block.

4. A single-depth plate type telescopic fork with a wide cross section according to claim 3, characterized in that: The first slide rail and the second slide rail are H-shaped slide rails.

5. A single-depth plate type telescopic fork with a wide cross section according to claim 1, characterized in that: A sliding groove is provided on the lower surface of the middle fork body along its length direction, and a first limiting block is provided in the sliding groove.

6. A single-depth plate type telescopic fork with a wide cross section according to claim 5, characterized in that: A plurality of eccentric wheels are provided on the upper surface of the lower fork bottom plate, and each of the eccentric wheels is used in conjunction with the slide groove; a second limit block is installed at the eccentric wheel.

7. A single-depth plate type telescopic fork with a wide cross-section according to claim 2, characterized in that: The upper fork panel is a rectangular plate.

8. The wide-section single-depth plate type telescopic fork according to claim 1, characterized in that: An encoder and a switch assembly are installed on the lower fork bottom plate.

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