Telescopic fork with self-tilting function

Abstract

The telescopic fork with the self-tilting function comprises a telescopic fork assembly and a cam eccentric tilting assembly, the cam eccentric tilting assembly is installed below the telescopic fork assembly, the telescopic fork assembly comprises an upper fork, a middle fork and lower forks which are movably connected in sequence, the middle fork and the upper fork extend out in sequence, gear boxes are installed below the two lower forks, and the gear boxes are connected with the cam eccentric tilting assembly. A telescopic driving motor is installed below the two gearboxes and the lower fork through a universal shaft, a first roller chain assembly is installed on the side portion of the lower fork, the universal shaft is in transmission connection with the telescopic driving motor through the first roller chain assembly, and the cam eccentric inclined assembly comprises a sliding groove installation piece, an inclined cam piece and a motor installation piece. The cam eccentric inclined assembly is arranged below the telescopic fork, the telescopic fork can rotate upwards or downwards by a certain angle, and therefore angle matching of the telescopic fork and the inclined tray is achieved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing telescopic forks, and particularly relates to a telescopic fork with a self-tilting function. Background Art

[0002] Most of the existing telescopic forks are horizontally placed and can only handle goods or pallets that are also horizontally placed. With the development and changes in the logistics and warehousing industry, the placement methods of goods on shelves are becoming more and more complex. For example, in a distribution center equipped with an order picking area, pallets usually have to be moved onto inclined gravity roller conveyors, and conventional telescopic forks cannot meet the market demand.

[0003] Therefore, there is an urgent need to provide a telescopic fork that can handle both horizontally placed goods and goods on inclined gravity roller conveyors on both sides. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a telescopic fork with a self-tilting function.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A telescopic fork with a self-tilting function includes a telescopic fork assembly and a cam eccentric tilting assembly. The cam eccentric tilting assembly is installed below the telescopic fork assembly. The telescopic fork assembly includes an upper fork, a middle fork, and a lower fork that are sequentially movably connected, and the middle fork and the upper fork extend out in sequence. Gear boxes are installed below both of the lower forks, and the two gear boxes are connected by a universal shaft. A telescopic drive motor is installed below the lower fork, and a first roller chain assembly is installed on the side of the lower fork. The universal shaft is connected and driven with the telescopic drive motor through the first roller chain assembly. A first detection switch and a first encoder are installed on the lower fork.

[0007] The cam eccentric tilting assembly includes a chute mounting part, an inclined cam part, and a motor mounting part. The chute mounting part is installed below the lower fork. The inclined cam part includes an inclined cam and an inclined cam bracket. The inclined cam is installed in the inclined cam bracket, and the inclined cam bracket is slidably connected to the chute on the chute mounting part. The motor mounting part includes an inclined drive motor and a motor mounting frame. The inclined drive motor is installed on the motor mounting frame, and the motor mounting frame is connected to the inclined cam bracket. The inclined cam and the inclined drive motor are connected and driven through a second roller chain assembly. A second detection switch is installed on the chute mounting part, and a second encoder is installed on the motor mounting frame.

[0008] Further, a first gear is installed in the lower fork, and the first gear engages with a second gear in the gearbox, and the second gear drives the first gear to rotate; a rack is installed in the middle fork, and the rack engages with the first gear, and the middle fork extends from the lower fork through the rack; a freewheel is installed in the middle fork, and the freewheel is used in cooperation with the upper fork through a chain tensioner assembly, and the upper fork extends from the middle fork through the chain tensioner assembly.

[0009] Further, the chain tensioner includes a fixed block, a chain tensioner, a stop block and a free chain. The fixed block is installed on the upper fork, the chain tensioner is installed on the side of the lower fork, the stop block is arranged on the chain tensioner, the stop block contacts the free chain, one end of the free chain contacts the upper fork, the other end contacts the lower fork, and at the same time the free chain is wound around the freewheel.

[0010] Further, the upper fork and the middle fork are slidably connected through a first sliding structure. The first sliding structure includes a first guide and a first chute. One of the first guide and the first chute is arranged on the upper fork, and the other is arranged on the middle fork. The upper fork and the middle fork are slidably mated by sliding the first guide on the first chute; the middle fork and the lower fork are slidably connected through a second sliding structure. The second sliding structure includes a second guide and a second chute. One of the second guide and the second chute is arranged on the middle fork, and the other is arranged on the lower fork. The middle fork and the lower fork are slidably mated by sliding the second guide on the second chute.

[0011] Further, the first guide includes a first guide block and a first guide wheel, and both the first guide block and the first guide wheel are slidably connected to the first chute; the second guide includes a second guide block and a second guide wheel, and both the second guide block and the second guide wheel are slidably connected to the second chute.

[0012] Further, an inclined cam end connecting plate is installed below the lower fork, and the inclined cam bracket is fixedly connected to the inclined cam end connecting plate.

[0013] Further, an inclined drive side connecting plate is installed below the lower fork, and the motor mounting bracket is fixedly connected to the inclined drive side connecting plate.

[0014] Further, a fixed fulcrum mounting member is installed at the end of the lower fork away from the middle fork. The fixed fulcrum mounting member includes a fixed seat and a rotating shaft. The rotating shaft is installed on the fixed seat, the rotating shaft is connected to the lower fork, and the lower fork makes a tilting motion up and down with the rotating shaft as the center.

[0015] Furthermore, anti-slip members are provided on the upper fork, the middle fork, and the lower fork.

[0016] Compared with the prior art, the advantages of the present utility model are as follows: By arranging a cam eccentric inclination assembly under the telescopic fork, the telescopic fork can be rotated upward or downward by a certain angle, so as to realize the angle matching between the telescopic fork and the inclined tray. The structure of this application is simple, reasonable, easy to use, with low application cost and good adaptability. It can not only meet the horizontal telescopic movement, but also meet the requirements of workstations with different specifications of trays. Therefore, it can maximize the efficient handling of goods, and has a compact structure, saves space, is easy to use, and has high popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Attached Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0019] Attached Figure 2 is a schematic structural diagram of the telescopic fork assembly of an embodiment of the present application;

[0020] Attached Figure 3 is a schematic structural diagram of the lower fork of an embodiment of the present application;

[0021] Attached Figure 4 is a schematic structural diagram of the cam eccentric inclination assembly of an embodiment of the present application;

[0022] Attached Figure 5 is a schematic structural diagram of the fixed fulcrum mounting member of an embodiment of the present application;

[0023] Attached Figure 6 is a schematic diagram of the tilting movement of an embodiment of the present application.

[0024] Explanation of the reference numerals and components involved in the drawings:

[0025] 1. Telescopic fork assembly; 11. Upper fork; 12. Middle fork; 13. Lower fork; 14. Gearbox; 15. Telescopic drive motor; 16. Universal shaft; 17. First roller chain assembly; 18. First detection switch; 19. First encoder; 2. Cam eccentric tilt assembly; 21. Chute mounting; 22. Tilt cam part; 23. Motor mounting; 24. Fixed fulcrum mounting; 25. Second chute; 3. Chain tensioner assembly; 4. Tilt drive side connecting plate; 5. Tilt cam end connecting plate; 6. Second roller chain assembly; 7. Second detection switch; 8. Second encoder; 9. Second guide block; 10. Second guide wheel. Detailed implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below through specific implementation manners. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] See the appendix Figures 1 to 6As shown in the figure, a telescopic fork with a self-tilting function according to the present application includes a telescopic fork assembly 1 and a cam eccentric tilting assembly 2. The cam eccentric tilting assembly 2 is installed below the telescopic fork assembly 1. The cam eccentric tilting assembly 2 rotates the telescopic fork upward or downward by a certain angle, so as to realize the angle matching between the telescopic fork and the tilting tray. The telescopic fork assembly 1 includes an upper fork 11, a middle fork 12, a lower fork 13, a gearbox 14, a telescopic drive motor 15, a universal shaft 16, a first roller chain assembly 17, a first detection switch 18, and a first encoder 19. The gearbox 14 is fixedly installed below the two lower forks 13. A second gear is provided inside each gearbox 14. The two second gears are connected by a universal shaft 16 to achieve rotational cooperation. The telescopic drive motor 15 is installed below the lower fork 13. The first roller chain assembly 17 is installed on the side of the lower fork 13. The first roller chain assembly 17 includes two sprockets. One of the sprockets is connected to the telescopic drive motor 15, and the other sprocket is connected to the universal shaft 16. The two sprockets are connected by a chain. The universal shaft 16 and the telescopic drive motor 15 are driven through the first roller chain assembly 17. The output torque of the telescopic drive motor 15 transmits power to the second gears in the two gearboxes 14 through the first roller chain assembly and the universal shaft 16. A first gear is installed in the lower fork 13. The first gear meshes with the second gear in the gearbox 14. The gearbox 14 transmits the rotation to the first gear through the meshing second gears, causing the first gear to rotate. A rack is installed in the middle fork 12. The rack meshes with the first gear. The first gear rotates to push the rack to extend the middle fork 12. A flying sprocket is installed in the middle fork 12. The chain tensioner assembly 3 includes a fixed block, a chain tensioner, a stop block, and a flying chain. The fixed block is installed on the upper fork 11. The chain tensioner is installed on the side of the lower fork 13. The stop block is provided on the chain tensioner. The stop block contacts the flying chain. One end of the flying chain contacts the upper fork 11, and the other end contacts the lower fork 13. At the same time, the flying chain is wound around the flying sprocket in the middle fork 12. Combining the principle of a movable pulley, when the middle fork 12 extends, it is equivalent to the movement of the movable pulley, and the upper fork 11, as the free end at this time, is dragged by the flying chain to extend, so as to realize the relative movement among the upper fork 11, the middle fork 12, and the lower fork 13.

[0028] The first detection switch 18 and the first encoder 19 are respectively fixed on the lower fork 13 and the gearbox 14 to detect the position of the extending fork.

[0029] Below the lower fork 13, an inclined drive side connecting plate 4 and an inclined cam end connecting plate 5 are fixed. The cam eccentric inclination assembly 2 includes a chute mounting member 21, an inclined cam member 22, and a motor mounting member 23. The chute mounting member 21 is fixedly connected to the inclined cam end connecting plate 5 by bolts or pin shafts. The inclined cam member 22 includes an inclined cam and an inclined cam bracket. The inclined cam bracket is slidably connected to the chute on the chute mounting member 21, and the inclined cam is mounted in the inclined cam bracket. The motor mounting member 23 includes an inclined drive motor and a motor mounting bracket. The motor mounting bracket and the inclined cam bracket are fixedly connected by bolts or pin shafts. The inclined drive motor is mounted on the motor mounting bracket. A second roller chain assembly 6 is mounted on the inclined cam bracket and the motor mounting bracket. The second roller chain assembly 6 includes two sprockets. One sprocket is connected to the inclined cam, and the other sprocket is connected to the inclined drive motor. The two sprockets are connected by a chain, and the inclined cam and the inclined drive motor are driven through the second roller chain assembly 6. A second detection switch 7 is mounted on the chute mounting member 21, and a second encoder 8 is mounted on the motor mounting member 23.

[0030] Preferably, as shown in the attached Figures 1 to 3 In the figure, in this embodiment, the upper fork 11 and the middle fork 12 are slidably connected by a first sliding structure. The first sliding structure includes a first guide member and a first chute. One of the first guide member and the first chute is provided on the upper fork 11, and the other is provided on the middle fork 12. The upper fork 11 and the middle fork 12 are slidably mated by the first guide member sliding on the first chute. The middle fork 12 and the lower fork 13 are slidably connected by a second sliding structure. The second sliding structure includes a second guide member and a second chute. One of the second guide member and the second chute is provided on the middle fork 12, and the other is provided on the lower fork 13. The middle fork 12 and the lower fork 13 are slidably mated by the second guide member sliding on the second chute. Among them, the first guide member includes a first guide block and a first guide wheel. Both the first guide block and the first guide wheel are slidably connected to the first chute. The second guide member includes a second guide block and a second guide wheel. Both the second guide block and the second guide wheel are slidably connected to the second chute. Taking the second guide member as an example, the second guide block 9 and the second guide wheel 10 are mounted on the lower fork 13, and the second chute 25 is mounted on the middle fork 12.

[0031] Preferably, as shown in the attached Figure 1 and the attached Figure 5 In the figure, at the end of the lower fork 13 below and away from the middle fork 12, a fixed fulcrum mounting member 24 is mounted. The fixed fulcrum mounting member 24 includes a fixed seat and a rotating shaft. The rotating shaft is mounted on the fixed seat, and the rotating shaft is connected to the lower fork 13. The lower fork 13 makes an up-and-down tilting movement with the rotating shaft as the center.

[0032] Preferably, anti-slip members are provided on the upper fork 11, the middle fork 12, and the lower fork 13 in this embodiment.

[0033] When the telescopic fork is running, the torque output by the telescopic drive motor 15 is transmitted through the first roller chain assembly 17 and the universal shaft 16 to the gearboxes 14 of the two fork bodies. The gearboxes 14 transmit power to the first gear in the lower fork 13 through the meshing gears, causing the first gear in the lower fork 13 to rotate. The rotation of the first gear in the lower fork 13 pushes the rack in the middle fork 12, causing the middle fork 12 to extend. The flywheel in the middle fork 12 presses against the flywheel chain in the chain tensioner assembly 3, causing the upper fork 11 to extend.

[0034] When the telescopic fork with self-tilting function is operating in the tilting function, the telescopic fork is interconnected through the lower fork 13, the tilting cam end connecting plate 5, the tilting drive side connecting plate 4, the fixed fulcrum mounting member 24, the tilting cam member 22, and the motor mounting member 23, so that it is integrated with the action end of the cam eccentric tilting assembly 2. The tilting drive motor transmits power to the tilting cam through the second roller chain assembly 6 to make it rotate. Since the chute mounting member 21 and the tilting cam member 22 are slidably connected through the chute, and the chute mounting member 21 is fixed on the using device without moving, the tilting cam rotates eccentrically, and the other end fixed fulcrum mounting member 24 is also fixed on the working device without moving, only the rotating shaft in the middle can rotate. Thus, the whole action part of the telescopic fork makes a tilting motion up and down with the axis on the fixed fulcrum mounting member 24 as the center.

[0035] 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 obvious 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 these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic fork with a self-tilting function, characterized in that, It includes a telescopic fork assembly and a cam eccentric tilting assembly. The cam eccentric tilting assembly is installed below the telescopic fork assembly. The telescopic fork assembly includes an upper fork, a middle fork, and a lower fork that are sequentially movably connected, and the middle fork and the upper fork extend out in sequence. A gearbox is installed below each of the two lower forks, and the two gearboxes are connected by a universal shaft. A telescopic drive motor is installed below the lower fork, and a first roller chain assembly is installed on the side of the lower fork. The universal shaft is connected and driven to the telescopic drive motor through the first roller chain assembly. A first detection switch and a first encoder are installed on the lower fork. The cam eccentric tilting assembly includes a chute mounting member, an inclined cam member, and a motor mounting member. The chute mounting member is installed below the lower fork. The inclined cam member includes an inclined cam and an inclined cam bracket. The inclined cam is installed in the inclined cam bracket, and the inclined cam bracket is slidably connected to the chute on the chute mounting member. The motor mounting member includes an inclined drive motor and a motor mounting frame. The inclined drive motor is installed on the motor mounting frame, the motor mounting frame is connected to the inclined cam bracket, and the inclined cam and the inclined drive motor are connected and driven through a second roller chain assembly. A second detection switch is installed on the chute mounting member, and a second encoder is installed on the motor mounting frame.

2. The telescopic fork with a self - tilting function according to claim 1, wherein, A first gear is installed in the lower fork, and the first gear engages with a second gear in the gearbox, and the second gear drives the first gear to rotate. A rack is installed in the middle fork, and the rack engages with the first gear, and the middle fork extends out from the lower fork through the rack. A flywheel is installed in the middle fork, and the flywheel is used in cooperation with the upper fork through a chain tensioner assembly, and the upper fork extends out from the middle fork through the chain tensioner assembly.

3. The telescopic fork with a self-tilting function according to claim 2, wherein, The chain tensioner includes a fixed block, a chain tensioner, a stop block, and a fly chain. The fixed block is installed on the upper fork, the chain tensioner is installed on the side of the lower fork, the stop block is arranged on the chain tensioner, the stop block contacts the fly chain, one end of the fly chain contacts the upper fork, the other end contacts the lower fork, and at the same time, the fly chain is wound around the flywheel.

4. A telescopic fork with a self - tilting function according to claim 1, characterized in that, The upper fork and the middle fork are slidably connected through a first sliding structure. The first sliding structure includes a first guide member and a first chute. One of the first guide member and the first chute is arranged on the upper fork, and the other is arranged on the middle fork. The upper fork and the middle fork are slidably mated by sliding the first guide member on the first chute. The middle fork and the lower fork are slidably connected through a second sliding structure. The second sliding structure includes a second guide member and a second chute. One of the second guide member and the second chute is arranged on the middle fork, and the other is arranged on the lower fork. The middle fork and the lower fork are slidably mated by sliding the second guide member on the second chute.

5. A telescopic fork with a self-tilting function according to claim 4, characterized in that, The first guiding member includes a first guiding block and a first guiding wheel, and both the first guiding block and the first guiding wheel are slidably connected to the first sliding groove; the second guiding member includes a second guiding block and a second guiding wheel, and both the second guiding block and the second guiding wheel are slidably connected to the second sliding groove.

6. A telescopic fork with a self-tilting function according to claim 1, characterized in that, An inclined cam end connecting plate is installed below the lower fork, and the inclined cam bracket is fixedly connected to the inclined cam end connecting plate.

7. A telescopic fork with a self-tilting function according to claim 1, characterized in that, An inclined drive side connecting plate is installed below the lower fork, and the motor mounting bracket is fixedly connected to the inclined drive side connecting plate.

8. A telescopic fork with a self-tilting function according to claim 1, characterized in that, A fixed fulcrum mounting member is installed at the end of the lower fork away from the middle fork. The fixed fulcrum mounting member includes a fixed seat and a rotating shaft. The rotating shaft is installed on the fixed seat, and the rotating shaft is connected to the lower fork. The lower fork makes an up-and-down tilting movement with the rotating shaft as the center of the circle.

9. A telescopic fork with a self-tilting function according to claim 1, characterized in that, Anti-slip members are provided on the upper fork, the middle fork, and the lower fork.

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