Chain type push-pull pallet fork

Abstract

The utility model provides a chain type push-pull pallet fork which comprises an upper fork assembly and a lower fork assembly, and the upper fork assembly is installed on the lower fork assembly in a sliding mode. The upper fork assembly comprises a goods guide plate, a goods guide groove is formed in the middle of the top face of the goods guide plate, the two sides of the goods guide groove are each provided with a material disc push-pull assembly, and the material disc push-pull assemblies act on the two sides of a material disc to push and pull the material disc to move along the goods guide groove. A driving assembly is installed at the bottom of the goods guide plate and is in transmission connection with the lower fork assembly, and the driving assembly is in transmission connection with the material disc push-pull assembly. The chain type push-and-pull pallet fork is pushed and pulled from the side portion of the pallet, the overall structure is more compact, and the chain type push-and-pull pallet fork can adapt to the application scene that goods are densely stacked.

Description

Technical Field

[0001] The utility model relates to the technical field related to logistics warehousing, and more precisely to a chain-type push-pull fork. Background Art

[0002] Telescopic forks are often used in warehousing logistics. The performance of telescopic forks is crucial to the overall efficiency of the logistics system, and its stability in use also directly affects the overall operational stability of the logistics system. Existing telescopic forks usually act on a material box or pallet, which contains goods. The telescopic fork extends into the bottom gap of the material box or pallet and lifts the goods to achieve the transportation of the goods. When the goods in the material box or pallet are heavy or the quantity is large, the load of the telescopic fork is very large and it is very easy to be damaged. In order to prevent the damage of the telescopic fork with a large load, a common solution is to increase the structural strength of the telescopic fork. This solution will inevitably increase the weight of the telescopic fork, and the requirements for the drive device are higher, and the lifting type telescopic fork cannot adapt to the retrieval of dense goods. There are also push-pull telescopic forks in the field. The push-pull telescopic fork is operated from the side of the material box or pallet, which can complete the retrieval of densely arranged goods, but the existing push-pull telescopic fork has a large room for improvement in accuracy.

[0003] In summary, the art needs to improve the structure of the existing push-pull telescopic forks to improve their compactness and operational accuracy to meet the needs of efficient, precise and dense arrangement. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a chain push-pull fork, in which the upper fork assembly is slidably connected with the lower fork assembly, the upper fork assembly has a finger structure for moving the material tray, the telescopic action of the upper fork assembly can be carried out simultaneously with the moving action of the finger structure, the overall structure is more compact, and the operation of picking up and placing the pallet is more efficient and accurate.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a chain push-pull fork, comprising an upper fork assembly and a lower fork assembly, wherein the upper fork assembly can be slidably mounted on the lower fork assembly; the upper fork assembly comprises a cargo guide plate, a cargo guide groove is provided in the middle of the top surface of the cargo guide plate, and a material tray push-pull assembly is respectively provided on both sides of the cargo guide groove, and the material tray push-pull assembly acts on both sides of the material tray to push and pull the material tray to move along the cargo guide groove; a driving assembly is installed at the bottom of the cargo guide plate, and the driving assembly is transmission-connected to the lower fork assembly, and the driving assembly is transmission-connected to the material tray push-pull assembly.

[0006] Preferably, the tray push-pull assembly includes an upper fork frame and a sprocket finger assembly integrally mounted with the upper fork frame. The upper fork frame is mounted on the top of the goods guide plate. The sprocket finger assembly is in transmission connection with the drive assembly, and the sprocket finger assembly acts on the side of the tray.

[0007] Preferably, the drive assembly includes a finger drive assembly and a fork extension drive assembly mounted at the bottom of the goods guide plate. The finger drive assembly is in transmission connection with the sprocket finger assembly, and the fork extension drive assembly is in transmission connection with the lower fork assembly.

[0008] Preferably, the sprocket finger assembly includes two adjustment seats mounted on the goods guide plate. A single-row sprocket and a multi-row sprocket are rotatably mounted on one of the adjustment seats. The single-row sprocket and the multi-row sprocket are coaxially arranged. Another multi-row sprocket is rotatably mounted on the other adjustment seat. Multi-row roller chains are wound around the two multi-row sprockets. A finger assembly is arranged outside the multi-row roller chains. The single-row sprocket is in transmission connection with the finger drive assembly.

[0009] Preferably, the single-row sprocket is in transmission connection with the sprocket finger assembly through a roller chain. A roller chain tensioning mechanism acting on the roller chain is mounted at the bottom of the goods guide plate.

[0010] Preferably, the finger drive assembly includes a drive fixed plate, on which a servo motor, a driving gear and two transmission gears are integrally mounted. The driving gear and the two transmission gears are rotatably mounted on the drive fixed plate. The servo motor is in transmission connection with the driving gear. The two transmission gears mesh with each other, and one of the transmission gears meshes with the driving gear. The two transmission gears are respectively in transmission connection with the single-row sprockets of the two sprocket finger assemblies through the roller chains.

[0011] Preferably, the lower fork assembly includes two lower fork support seats arranged in parallel with each other. The top of the lower fork support seats has lower fork guide rails. Limit blocks are respectively arranged at both ends of the top of the lower fork support seats. Rack bars are horizontally aligned and arranged inside the lower fork support seats respectively. The bottom of the goods guide plate is slidably mounted in the lower fork guide rails through guide blocks. The fork extension drive assembly is integrally arranged with the rack bars.

[0012] Preferably, the fork extension drive assembly includes a fixed plate integrally mounted with the goods guide plate. An extension servo motor is integrally mounted on the fixed plate. The output end of the extension servo motor is in transmission connection with a driving gear, and the driving gear meshes with the rack bar.

[0013] Preferably, an upper fork position switch for sensing the position of the upper fork assembly is mounted on the side of the lower fork support seat.

[0014] Preferably, a finger position switch for sensing the position of the finger component is installed on the side of the upper fork frame.

[0015] Compared with the prior art, the advantages of a chain - type push - pull forklift fork disclosed by the present utility model are as follows: The chain - type push - pull forklift fork performs push - pull operations from the side of the pallet, and the overall structure is more compact, which can adapt to the application scenario of dense stacking of goods; The chain - type push - pull forklift fork can perform push - pull operations while performing telescopic actions, with higher working efficiency; The chain - type push - pull forklift fork adjusts the push - pull operation state based on a detection switch, and the operation is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] As Figure 1 shown is a schematic structural diagram of a chain - type push - pull forklift fork of the present utility model.

[0018] As Figure 2 shown is a schematic structural diagram of the upper fork assembly of a chain - type push - pull forklift fork of the present utility model.

[0019] As Figure 3 shown is a bottom view of the upper fork assembly of a chain - type push - pull forklift fork of the present utility model.

[0020] As Figure 4 shown is a schematic structural diagram of the sprocket finger assembly of a chain - type push - pull forklift fork of the present utility model.

[0021] As Figure 5 shown is a schematic structural diagram of the finger drive assembly of a chain - type push - pull forklift fork of the present utility model.

[0022] As Figure 6 shown is a schematic structural diagram of the fork - extending drive assembly of a chain - type push - pull forklift fork of the present utility model.

[0023] As Figure 7 shown is a schematic structural diagram of the lower fork assembly of a chain - type push - pull forklift fork of the present utility model.

[0024] As Figure 8 shown is a schematic structural diagram of the combined installation of the upper fork position switch and the lower fork assembly of a chain - type push - pull forklift fork of the present utility model.

[0025] As Figure 9The figure shows a structural schematic diagram of the combined installation of a finger position switch and an upper fork assembly of a chain - type push - pull fork of the present utility model. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1 to 3 shown, a chain - type push - pull fork of the present application includes an upper fork assembly 10 and a lower fork assembly 20. The upper fork assembly 10 is slidably installed on the lower fork assembly 20. The upper fork assembly 10 includes a goods guiding plate 11. In the middle of the top surface of the goods guiding plate 11, there is a goods guiding groove 100. On both sides of the goods guiding groove 100, there are respectively tray push - pull assemblies. The tray push - pull assemblies act on both sides of the tray to push and pull the tray to move along the goods guiding groove 100. A driving assembly is installed at the bottom of the goods guiding plate 11. The driving assembly is in transmission connection with the lower fork assembly 20. The upper fork assembly 10 slides along the lower fork assembly 20 under the drive of the driving assembly to achieve the telescopic function. The driving assembly is in transmission connection with the tray push - pull assemblies. The tray push - pull assemblies act on the tray under the drive of the driving assembly. The chain - type push - pull fork pushes and pulls from the side of the tray, and the overall structure is more compact, which can adapt to the application scenario of dense stacking of goods. The chain - type push - pull fork can perform the push - pull action while performing the telescopic action, and has higher working efficiency.

[0028] The tray push - pull assemblies include an upper fork frame 12 and a sprocket finger assembly 13 combined and installed with the upper fork frame 12. The upper fork frame 12 is installed at the top of the goods guiding plate 11. The sprocket finger assembly 13 is in transmission connection with the driving assembly 20, and the sprocket finger assembly 13 acts on the side of the tray.

[0029] Preferably, a plurality of middle safety shields 151 are installed at the top of the goods guiding plate 11. The middle safety shields 151 are located at the bottom of the goods guiding groove 100. The middle safety shields 151 protect the transmission structure and electrical structure inside them, preventing damage to these structures when transporting goods, which helps to reduce the failure rate of the chain - type push - pull fork and improve the service life of the chain - type push - pull fork. Side safety shields 152 are installed on the outer side of the tray push - pull assemblies. The side safety shields 152 cover the outer side of the sprocket finger assembly 13 away from the goods guiding groove 100, preventing external interference with the normal operation of the sprocket finger assembly 13, which helps to improve the operation stability of the chain - type push - pull fork and at the same time improve the service life.

[0030] The driving assembly includes a finger driving assembly 17 and a fork extending driving assembly 18 installed at the bottom of the goods guiding plate 11. The finger driving assembly 17 is in transmission connection with the sprocket finger assembly 13, and the fork extending driving assembly 18 is in transmission connection with the lower fork assembly 20.

[0031] See Figures 3 to 4 , the sprocket finger assembly 13 includes two adjusting seats 134 installed on the goods guiding plate 11. A single-row sprocket 131 and a multi-row sprocket 131 are rotatably installed on one adjusting seat 134. The single-row sprocket 131 and the multi-row sprocket 131 are coaxially arranged. A multi-row sprocket 131 is rotatably installed on the other adjusting seat 134; A multi-row roller chain 135 is wound around the two multi-row sprockets 131. A finger assembly 133 is arranged outside the multi-row roller chain 135. The single-row sprocket 131 is in transmission connection with the finger driving assembly 17. Specifically, the single-row sprocket 131 is in transmission connection with the sprocket finger assembly 13 through a roller chain. Preferably, a roller chain tensioning mechanism acting on the roller chain is installed at the bottom of the goods guiding plate 11 to maintain the stable driving of the finger driving assembly 17 on the sprocket finger assembly 13.

[0032] See Figure 5 , the finger driving assembly 17 includes a driving fixed plate 174. A servo motor 171, a driving gear 172 and two transmission gears 173 are integrally installed on the driving fixed plate 174. The driving gear 172 and the two transmission gears 173 are rotatably installed on the driving fixed plate 174. The servo motor 171 is in transmission connection with the driving gear 172. The two transmission gears 173 are meshed with each other, and one of the transmission gears 173 is meshed with the driving gear 172. The two transmission gears 173 are respectively in transmission connection with the single-row sprockets 131 of the two sprocket finger assemblies 13 through roller chains. When the servo motor 171 works, it drives the single-row sprockets 131 of the two sprocket finger assemblies 13 to rotate synchronously.

[0033] See Figure 6 and Figure 7 , the lower fork assembly 20 includes two lower fork support seats 21 arranged in parallel with each other. The top of the lower fork support seat 21 has a lower fork guide rail 22. The two ends of the top of the lower fork support seat 21 respectively have limit blocks 23. The inner sides of the lower fork support seats 21 respectively have racks 24 arranged horizontally in alignment; The bottom of the goods guiding plate 11 is slidably installed in the lower fork guide rail 22 through a guide block. The fork extending driving assembly 18 is integrally arranged with the rack 24 to drive the upper fork assembly 10 to move along the direction of the lower fork guide rail 22.

[0034] The fork extending driving assembly 18 includes a fixed plate 181 integrally installed with the goods guiding plate 11. An extension fork servo motor 182 is integrally installed on the fixed plate 181. The output end of the extension fork servo motor 182 is in transmission connection with a driving gear 183. The driving gear 183 is meshed with the rack 24.

[0035] SeeFigure 8 and Figure 9 On the side of the lower fork support base 21, a fork position switch 32 for sensing the position of the induction upper fork assembly 10 is installed to monitor the telescopic state of the upper fork assembly 10. On the side of the upper fork frame 12, a finger position switch 31 for sensing the position of the induction finger assembly 133 is installed to monitor the movement state of the finger assembly 133. The fork position switch 32 and the finger position switch 31 are electrically connected to the control system of the chain push-pull fork, and the control system of the chain push-pull fork controls the operating states of each servo motor, so as to achieve precise monitoring and control of the telescopic state of the chain push-pull fork and the push-pull state of the goods.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chain push-pull fork, characterized in that, It includes an upper fork assembly and a lower fork assembly, and the upper fork assembly is slidably installed on the lower fork assembly; the upper fork assembly includes a goods guiding plate, the middle of the top surface of the goods guiding plate has a goods guiding groove, and on both sides of the goods guiding groove, there are respectively tray pushing and pulling assemblies, the tray pushing and pulling assemblies act on both sides of the tray, and push and pull the tray to move along the goods guiding groove; a driving assembly is installed at the bottom of the goods guiding plate, the driving assembly is in transmission connection with the lower fork assembly, and the driving assembly is in transmission connection with the tray pushing and pulling assembly.

2. The chain-driven push-pull fork according to claim 1, wherein, The tray pushing and pulling assembly includes an upper fork frame and a sprocket finger assembly combined and installed with the upper fork frame, the upper fork frame is installed at the top of the goods guiding plate, the sprocket finger assembly is in transmission connection with the driving assembly, and the sprocket finger assembly acts on the side of the tray.

3. The chain-driven push-pull fork as claimed in claim 2, wherein, The driving assembly includes a finger driving assembly and a fork extending driving assembly installed at the bottom of the goods guiding plate, the finger driving assembly is in transmission connection with the sprocket finger assembly, and the fork extending driving assembly is in transmission connection with the lower fork assembly.

4. The chain-type push-pull fork according to claim 3, wherein, The sprocket finger assembly includes two adjusting seats installed on the goods guiding plate, a single-row sprocket and a multi-row sprocket are rotatably installed on one of the adjusting seats, the single-row sprocket and the multi-row sprocket are coaxially arranged, and a multi-row sprocket is rotatably installed on the other adjusting seat; multi-row roller chains are wound around the two multi-row sprockets, a finger assembly is arranged outside the multi-row roller chains, and the single-row sprocket is in transmission connection with the finger driving assembly.

5. The chain-type push-pull fork according to claim 4, wherein, The single-row sprocket is in transmission connection with the sprocket finger assembly through a roller chain, and a roller chain tensioning mechanism acting on the roller chain is installed at the bottom of the goods guiding plate.

6. The chain-driven push-pull forklift according to claim 5, characterized in that, The finger driving assembly includes a driving fixed plate, a servo motor, a driving gear and two transmission gears are combined and installed on the driving fixed plate, the driving gear and the two transmission gears are rotatably installed on the driving fixed plate, the servo motor is in transmission connection with the driving gear, the two transmission gears mesh with each other, and one of the transmission gears meshes with the driving gear, and the two transmission gears are respectively in transmission connection with the single-row sprockets of the two sprocket finger assemblies through the roller chains.

7. The chain-driven push-pull forklift according to claim 3, characterized in that The lower fork assembly includes two lower fork support seats arranged in parallel with each other, the top of the lower fork support seats has lower fork guide rails, limit blocks are respectively arranged at both ends of the top of the lower fork support seats, and racks are horizontally aligned and arranged inside the lower fork support seats; the bottom of the goods guiding plate is slidably installed in the lower fork guide rails through guide blocks, and the fork extending driving assembly is combined with the racks.

8. The chain push-pull fork according to claim 7, wherein The fork extending driving assembly includes a fixed plate combined and installed with the goods guiding plate, an extend fork servo motor is combined and installed on the fixed plate, the output end of the extend fork servo motor is in transmission connection with a driving gear, and the driving gear meshes with the rack.

9. The chain push-pull fork according to claim 7, wherein An upper fork position switch for sensing the position of the upper fork assembly is installed on the side of the lower fork support seat.

10. The chain-driven push-pull fork according to claim 4, characterized in that, A finger position switch for sensing the position of the finger assembly is installed on the side of the upper fork frame.

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