Telescopic pallet fork and forklift

Abstract

The utility model discloses a telescopic pallet fork and a forklift. The telescopic pallet fork comprises a pallet fork mechanism and a front-back telescopic mechanism, the pallet fork mechanism comprises a vertical plate and two transverse plates, the front-back telescopic mechanism comprises a driving module, a telescopic module, a first transmission module and a second transmission module, the driving module comprises a supporting seat and a driving motor arranged on the supporting seat, and the first transmission module is arranged on the front side face of the supporting seat. The second transmission module is arranged on the rear side face of the vertical plate, the telescopic module comprises telescopic structures which are symmetrically arranged left and right, each telescopic structure comprises a first rotating arm set and a second rotating arm, each first rotating arm set comprises two first rotating arms which are arranged side by side up and down, and each second rotating arm is located between the two corresponding first rotating arms; the rear ends of the first rotating arms are connected with the first transmission module, the rear end of the second rotating arm is rotationally connected with the front ends of the two first rotating arms through rotating shafts, and the front end of the second rotating arm is connected with the second transmission module. The carrying trolley is high in bearing capacity and capable of carrying heavy goods.

Description

Technical Field

[0001] This utility model relates to the field of logistics and warehousing technology, and in particular to a telescopic forklift and forklift. Background Technology

[0002] Forklifts are widely used in warehousing and logistics for transporting and handling goods. The forks are a type of forklift attachment, essentially robotic arms mounted on the forklift, making it a versatile and efficient material handling tool capable of moving goods. Currently, telescopic forks on forklifts extend / retract using a front-to-back telescopic mechanism. However, existing telescopic mechanisms generally employ a scissor fork structure, which has weak load-bearing capacity and cannot handle heavy loads. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, this utility model provides a telescopic forklift and forklift with strong load-bearing capacity, which can handle heavy goods.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a telescopic fork, including a fork mechanism and a front and rear telescopic mechanism. The fork mechanism includes a vertical plate and two horizontal plates disposed at the bottom of the vertical plate. The front and rear telescopic mechanism includes a drive module, a telescopic module, a first transmission module, and a second transmission module. The drive module includes a support base and a drive motor disposed on the support base. The first transmission module is disposed on the front side of the support base, and the second transmission module is disposed on the rear side of the vertical plate. The telescopic module includes a telescopic structure arranged symmetrically on the left and right. The telescopic structure includes a first rotating arm group and a second rotating arm. The first rotating arm group includes two first rotating arms arranged side by side vertically. The second rotating arm is located between the two first rotating arms. The rear end of the first rotating arm is connected to the first transmission module. The rear end of the second rotating arm is rotatably connected to the front end of the two first rotating arms through a rotating shaft. The front end of the second rotating arm is connected to the second transmission module. The drive motor drives the two first rotating arm groups to rotate synchronously in opposite directions through the first transmission module. The second transmission module is used to make the two second rotating arms rotate synchronously in opposite directions.

[0006] In this solution, the drive motor drives the two first rotating arm groups to rotate outward synchronously through the first transmission module. The two first rotating arm groups drive the second rotating arm on the same side to rotate outward, thereby causing the fork mechanism to move and retract towards the support seat. The drive motor also drives the two first rotating arm groups to rotate inward synchronously through the first transmission module. The two first rotating arm groups drive the second rotating arm on the same side to rotate inward, thereby causing the fork mechanism to extend away from the support seat.

[0007] Preferably, the first transmission module includes a first mounting base disposed on the front side of the support base. The first mounting base has symmetrical first notch groups on its left and right sides. The first notch groups include two first notches arranged symmetrically vertically. The first mounting base also has symmetrical first transmission rods on its left and right sides. The first transmission rods are vertically arranged and rotatably connected to the first mounting base. The first transmission rods pass through the two first notches on the same side. The rear ends of the two first rotating arms of the first rotating arm group are respectively located in the two first notches on the same side and are fixedly connected to the first transmission rods on the same side. The top of the first transmission rod extends upward out of the first mounting base and is coaxially mounted with a first gear. Two second gears are disposed between the two first gears. The second gears are rotatably connected to the first mounting base. The two first gears and the two second gears mesh sequentially from left to right. The drive motor is used to drive one of the first transmission rods to rotate.

[0008] Preferably, the second transmission module includes a second mounting base, with second notches symmetrically arranged on the left and right sides of the second mounting base. Second transmission rods are also symmetrically arranged on the left and right sides of the second mounting base. The second transmission rods are vertically arranged and rotatably connected to the second mounting base. The second transmission rods pass through the second notches on the same side. The front end of the second rotating arm is located in the second notches on the same side and is fixedly connected to the second transmission rod on the same side. The top of the second transmission rod extends upward out of the second mounting base and is coaxially mounted with a third gear. Two fourth gears are arranged between the two third gears. The fourth gears are rotatably connected to the second mounting base. The two third gears and the two fourth gears mesh sequentially from left to right.

[0009] Preferably, the first gear and the third gear have the same size, and the second gear and the fourth gear have the same size.

[0010] Preferably, the first transmission rod passes through the rear end of the first rotating arm, and the second transmission rod passes through the front end of the second rotating arm.

[0011] Preferably, the rotating shaft passes through the rear end of the second rotating arm and is fixedly connected to the second rotating arm, and the upper and lower ends of the rotating shaft are respectively rotatably connected to the front end of the first rotating arm on the same side.

[0012] The present invention relates to a forklift, comprising a movable base, a lifting mechanism, and the aforementioned telescopic forks. The lifting mechanism is mounted on the movable base and is used to drive the telescopic forks to lift and lower.

[0013] Preferably, the movable base includes a base plate, a movable mechanism is provided at the bottom of the base plate, and an E-shaped base is provided at the top of the base plate. The base includes a connecting plate and three parallel support blocks. The connecting plate is arranged in a left-right direction, and the support blocks are arranged in front of the connecting plate and perpendicular to the connecting plate. The support blocks are arranged in a front-back direction, and the space between adjacent support blocks is used for a horizontal plate to pass through.

[0014] Preferably, the lifting mechanism includes a fixed gantry, a lifting gantry, a lifting cylinder, and multiple lifting components. The fixed gantry includes symmetrically arranged columns and a connecting beam connecting the tops of the two columns. The lifting gantry includes symmetrically arranged support columns and a crossbeam connecting the tops of the two support columns. The support columns are located inside the corresponding column and can move up and down along the corresponding column. The lifting components include guide wheels and chains. The guide wheels are located at the bottom of the crossbeams. The front end of the chain is connected to the support seat, and the rear end of the chain passes around the guide wheel and connects to the connecting beam. The inner side of the support column has a vertical guide groove, and the support seat has a rolling wheel at a position corresponding to the guide groove that can roll along the guide groove. The lifting cylinder is used to drive the lifting gantry to move up and down along the columns.

[0015] The lifting cylinder is vertically mounted, with its telescopic end connected to the crossbeam. The lifting cylinder drives the crossbeam to rise, which in turn drives the guide wheel to rise, causing the front end of the chain to move upward and lift the telescopic forks.

[0016] The beneficial effects of this utility model are: strong load-bearing capacity, capable of handling heavy goods. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the telescopic fork structure;

[0018] Figure 2 This is a schematic diagram of the rear structure of a telescopic fork.

[0019] Figure 3 This is a schematic diagram of the retractable forks in the retracted state.

[0020] Figure 4 This is a structural diagram of a forklift;

[0021] Figure 5 This is a top view of the forklift;

[0022] Figure 6 This is a diagram illustrating the movement of goods on a rack using a forklift.

[0023] In the diagram: 1. Forklift mechanism, 2. Telescopic mechanism, 3. Vertical plate, 4. Horizontal plate, 5. Support base, 6. Drive motor, 7. First rotating arm, 8. Second rotating arm, 9. First mounting base, 10. First notch, 11. First transmission rod, 12. First gear, 13. Second gear, 14. Second mounting base, 15. Second notch, 16. Second transmission rod, 17. Third gear, 18. Fourth gear, 19. Base plate, 20. Connecting plate, 21. Support block, 22. Column, 23. Connecting beam, 24. Support column, 25. Crossbeam, 26. Guide wheel, 27. Chain, 28. Guide groove, 29. Rolling wheel, 30. Lifting cylinder, 31. Shelf, 32. Goods. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] Example: A telescopic fork in this example, such as Figures 1 to 3 As shown, the device includes a fork mechanism 1 and a front-to-back telescopic mechanism 2. The fork mechanism 1 includes a vertically arranged vertical plate 3 and two horizontal plates 4 arranged at the bottom of the vertical plate 3. The front-to-back telescopic mechanism 2 includes a drive module, a telescopic module, a first transmission module, and a second transmission module. The drive module includes a support base 5 and a drive motor 6 arranged on the support base 5. The first transmission module is arranged on the front side of the support base 5, and the second transmission module is arranged on the rear side of the vertical plate 3. The telescopic module includes a telescopic structure arranged symmetrically on the left and right. The telescopic structure includes a first rotating arm group and a second rotating arm 8. The first rotating arm group includes two first rotating arms 7 arranged side by side, one above the other. The second rotating arm 8 is located between the two first rotating arms 7. The rear end of the first rotating arm 7 is connected to the first transmission module. The rear end of the second rotating arm 8 is rotatably connected to the front end of the two first rotating arms 7 through a rotating shaft. The front end of the second rotating arm 8 is connected to the second transmission module. The drive motor 6 drives the two first rotating arm groups to rotate synchronously in opposite directions through the first transmission module. The second transmission module is used to make the two second rotating arms 8 rotate synchronously in opposite directions.

[0026] The first transmission module includes a first mounting base 9 disposed on the front side of the support base 5. The first mounting base 9 has symmetrical first notch groups on its left and right sides. The first notch groups include two first notches 10 symmetrically arranged vertically. The first mounting base 9 also has symmetrical first transmission rods 11 on its left and right sides. The first transmission rods 11 are vertically arranged and rotatably connected to the first mounting base 9. The first transmission rods 11 pass through the two first notches 10 on the same side. The rear ends of the two first rotating arms 7 of the first rotating arm group are respectively located in the two first notches 10 on the same side and are fixedly connected to the first transmission rods 11 on the same side. The top of the first transmission rods 11 extends upward out of the first mounting base 9 and is coaxially mounted with a first gear 12. Two second gears 13 are provided between the two first gears 12. The second gears 13 are rotatably connected to the first mounting base 9. The two first gears 12 and the two second gears 13 mesh sequentially from left to right. The drive motor 6 is used to drive the first transmission rod 11 on the left side to rotate.

[0027] The second transmission module includes a second mounting base 14. The second mounting base 14 has symmetrical second notches 15 on its left and right sides. The second transmission rods 16 are also symmetrically arranged on the left and right sides of the second mounting base 14. The second transmission rods 16 are vertically arranged and rotatably connected to the second mounting base 14. The second transmission rods 16 pass through the second notches 15 on the same side. The front end of the second rotating arm 8 is located in the second notches 15 on the same side and is fixedly connected to the second transmission rods 16 on the same side. The top of the second transmission rods 16 extends upward out of the second mounting base 14 and is coaxially mounted with a third gear 17. Two fourth gears 18 are arranged between the third gears 17. The fourth gears 18 are rotatably connected to the second mounting base 14. The two third gears 17 and the two fourth gears 18 mesh sequentially from left to right.

[0028] The first gear 12 and the third gear 17 have the same dimensions, and the second gear 13 and the fourth gear 18 have the same dimensions. The first transmission rod 11 passes through the rear end of the first rotating arm 7, and the second transmission rod 16 passes through the front end of the second rotating arm 8. The rotating shaft passes through the rear end of the second rotating arm 8 and is fixedly connected to the second rotating arm 8. The upper and lower ends of the rotating shaft are respectively rotatably connected to the front end of the first rotating arm 7 on the same side.

[0029] In this design, when the fork mechanism needs to retract, the drive motor drives the left first transmission rod to rotate forward. The first transmission rod drives the first gear on it to rotate forward. The first gear drives the right first gear to rotate in reverse through the two middle second gears, which in turn drives the right first transmission rod to rotate in reverse. This drives the two first rotating arm assemblies to rotate outward synchronously. The two first rotating arm assemblies drive the second rotating arms on the same side to rotate outward. The two second rotating arms drive the two second transmission rods to rotate in the opposite direction, causing the two third gears to rotate in the opposite direction. The two third gears then achieve synchronous reverse rotation through the two middle fourth gears, causing the fork mechanism to retract.

[0030] When the fork mechanism needs to extend forward, the drive motor drives the left first transmission rod to reverse, which in turn drives the first gear on it to reverse. The first gear then drives the right first gear to rotate forward through the two middle second gears, which in turn drives the right first transmission rod to rotate forward. This drives the two first rotating arm assemblies to rotate inward synchronously. The two first rotating arm assemblies then drive the second rotating arm on the same side to rotate inward. Under the action of the two third gears and the two fourth gears, the two second rotating arms rotate inward synchronously, thus allowing the fork mechanism to extend forward.

[0031] The front and rear telescopic mechanisms of this solution have strong load-bearing capacity and can handle heavy goods.

[0032] One type of forklift in this embodiment, such as Figures 1 to 6 As shown, it includes a movable base, a lifting mechanism, and the aforementioned telescopic forks. The lifting mechanism is mounted on the movable base and is used to drive the telescopic forks to lift and lower.

[0033] The movable base includes a base plate 19, a movable mechanism at the bottom of the base plate 19, and an E-shaped base at the top of the base plate 19. The base includes a connecting plate 20 and three parallel support blocks 21. The connecting plate 20 is arranged in a left-right direction, and the support blocks 21 are arranged in front of the connecting plate 20 and perpendicular to the connecting plate 20. The support blocks 21 are arranged in a front-back direction, and the space between adjacent support blocks 21 is used for the horizontal plate 4 to pass through.

[0034] The lifting mechanism includes a fixed gantry, a lifting gantry, a lifting cylinder, and multiple lifting components. The fixed gantry includes symmetrically arranged columns 22 and a connecting beam 23 connecting the tops of the two columns 22. The lifting gantry includes symmetrically arranged support columns 24 and a crossbeam 25 connecting the tops of the two support columns 24. The support columns 24 are located inside the corresponding column 22 and can move up and down along the corresponding column 22. The lifting components include guide wheels 26 and chains 27. The guide wheels 26 are located at the bottom of the crossbeam 25. The front end of the chain 27 is connected to the support base 5, and the rear end of the chain 27 passes around the guide wheels 26 and connects to the connecting beam 23. The connecting beam 23 is located behind the support columns 24. A guide groove 28 is vertically provided inside the support columns 24. A rolling wheel 29 is provided on the support base 5 at a position corresponding to the guide groove 28 and can roll along the guide groove 28. The lifting cylinder 30 is used to drive the lifting gantry to rise and fall along the columns 22.

[0035] The lifting cylinder 30 is vertically mounted, and its telescopic end is connected to the crossbeam 25. The lifting cylinder drives the crossbeam to rise, which in turn drives the guide wheel to rise, and the front end of the chain to move upward, causing the telescopic forks to rise.

[0036] In this design, a movable base is used to move the forklift, and a lifting mechanism is used to lift the telescopic forks. The forklift moves to the front of the rack 31 to move the goods 32 on it, such as... Figure 6 As shown.

Claims

1. A telescopic fork, characterized in that, The utility model provides a kind of fork mechanism (1) and front-rear telescopic mechanism (2), the fork mechanism (1) includes riser (3) and the two horizontal plate (4) of being arranged at riser (3) bottom, the front-rear telescopic mechanism (2) includes drive module, telescopic module, first transmission module and second transmission module, the drive module includes support seat (5), drive motor (6) being arranged on support seat (5), the first transmission module is arranged in support seat (5) front side, the second transmission module is arranged in riser (3) rear side, the telescopic module includes left-right symmetrically arranged telescopic structure, the telescopic structure includes first rotary arm group and second rotary arm (8), the first rotary arm group includes two first rotary arms (7) that are arranged side by side upwards and downwards, the second rotary arm (8) is between two first rotary arms (7), the rear end of the first rotary arm (7) is connected with the first transmission module, the rear end of the second rotary arm (8) is rotatably connected with the front end of two first rotary arms (7) by pivot, the front end of the second rotary arm (8) is connected with the second transmission module, the drive motor (6) drives two first rotary arms group synchronous reverse rotation by the first transmission module, and the second transmission module is used to make two second rotary arms (8) synchronous reverse rotation.

2. A telescoping fork according to claim 1, wherein, The first transmission module includes first mounting seat (9) being arranged in support seat (5) front side, the first mounting seat (9) is symmetrically provided with first notch group on left and right sides, the first notch group includes two first notches (10) that are symmetrically arranged upwards and downwards, the first mounting seat (9) is also symmetrically provided with first transmission rod (11) on left and right sides, the first transmission rod (11) is vertically arranged and is rotatably connected with the first mounting seat (9), the first transmission rod (11) passes through two first notches (10) on the same side, the rear end of the two first rotary arms (7) of the first rotary arm group is located in two first notches (10) on the same side respectively and is fixedly connected with the first transmission rod (11) on the same side, the first transmission rod (11) top extends out of the first mounting seat (9) and is coaxially installed with first gear (12), two first gears (12) are provided with two second gears (13) between, the second gear (13) is rotatably connected with the first mounting seat (9), two first gears (12), two second gears (13) are engaged in order from left to right, and the drive motor (6) is used to drive one of first transmission rod (11) to rotate.

3. A telescoping fork according to claim 2, wherein, The second transmission module comprises a second mounting base (14), second notches (15) are symmetrically arranged on the left and right sides of the second mounting base (14), second transmission rods (16) are also symmetrically arranged on the left and right sides of the second mounting base (14), the second transmission rods (16) are vertically arranged and rotationally connected with the second mounting base (14), the second transmission rods (16) pass through the same side second notches (15), the front end of the second rotary arm (8) is located in the same side second notch (15) and is fixedly connected with the same side second transmission rod (16), the top of the second transmission rod (16) extends out of the second mounting base (14) and is coaxially provided with a third gear (17), two fourth gears (18) are arranged between the two third gears (17), the fourth gears (18) are rotationally connected with the second mounting base (14), and the two third gears (17) and the two fourth gears (18) are sequentially meshed from left to right.

4. A telescoping fork according to claim 3, wherein, The first gear (12) is consistent in size with the third gear (17), and the second gear (13) is consistent in size with the fourth gear (18).

5. A telescoping fork according to claim 3, wherein, The first transmission rod (11) passes through the rear end of the first rotary arm (7), and the second transmission rod (16) passes through the front end of the second rotary arm (8).

6. A telescoping fork according to claim 1, wherein, The rotating shaft passes through the rear end of the second rotary arm (8) and is fixedly connected with the second rotary arm (8), and the rotating shaft is rotationally connected with the front end of the same side first rotary arm (7) at the upper and lower ends.

7. A fork lift truck characterised in that, The mobile base, the lifting mechanism and the telescopic fork of any one of claims 1-6 are comprised, the lifting mechanism is arranged on the mobile base, and the lifting mechanism is used to drive the telescopic fork to lift.

8. A fork truck as claimed in claim 7, wherein, The mobile base comprises a bottom plate (19), the bottom plate (19) is provided with a moving mechanism at the bottom, the top of the bottom plate (19) is provided with an E-shaped base, the base comprises a connecting plate (20) and three mutually parallel supporting blocks (21), the connecting plate (20) is arranged in the left-right direction, the supporting blocks (21) are arranged on the front side of the connecting plate (20) and are perpendicular to the connecting plate (20), and the supporting blocks (21) are arranged in the front-rear direction.

9. A fork truck as claimed in claim 7 wherein, The lifting mechanism comprises a fixed portal, a lifting portal, a jacking cylinder (30) and a plurality of pull-up assemblies, the fixed portal comprises left and right symmetrical columns (22) and a connecting beam (23) connecting the top ends of the two columns (22), the lifting portal comprises left and right symmetrical support columns (24) and a cross beam (25) connecting the top ends of the two support columns (24), the support column (24) is located inside the corresponding side column (22) and can move up and down along the corresponding side column (22), the pull-up assembly comprises a guide wheel (26) and a chain (27), the guide wheel (26) is arranged at the bottom of the cross beam (25), the front end of the chain (27) is connected with the support base (5), the rear end of the chain (27) is connected with the connecting beam (23) by passing around the guide wheel (26), a guide groove (28) is vertically arranged inside the support column (24), a rolling wheel (29) which can roll along the guide groove (28) is arranged on the support base (5) at a position corresponding to the guide groove (28), and the jacking cylinder (30) is used to drive the lifting portal to lift along the column (22).

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