Conveying equipment, warehouse logistics system, and pallet conveying method

Abstract

This invention provides a conveying device, a warehouse logistics system, and a pallet conveying method that reduce the space occupied and turning radius of the conveying device during pallet transport, thereby increasing the flexibility and versatility of the conveying device's use. [Solution] A conveying device 10, a warehouse logistics system, and a pallet conveying method, wherein the conveying device 10 comprises a vehicle body 1 configured to convey pallets and to move autonomously, a mounting frame provided on the vehicle body 1 so as to slide horizontally, and a fork arm 2 whose first end is connected to the mounting frame and which extends horizontally in conjunction with the movement of the mounting frame so as to be inserted into the fork holes of the pallet, and which is configured to move up and down relative to the vehicle body 1 so as to lift the pallet, and when the fork arm 2 lifts the pallet, the vehicle body 1 and the mounting frame are configured so as to position the pallet above the vehicle body 1 by the relative movement between the vehicle body 1 and the mounting frame.

Claims

1. A conveying device configured to transport pallets (20), A vehicle body (1) configured to move autonomously, A mounting frame (31) is provided on the vehicle body (1) so as to slide horizontally, The system includes a fork arm (2) whose first end is connected to the mounting frame (31), which extends horizontally with the movement of the mounting frame (31) so as to be inserted into the fork holes (201) of the pallet (20), and which is configured to move up and down relative to the vehicle body (1) so as to lift the pallet (20), Furthermore, when the fork arm (2) lifts the pallet (20), the vehicle body (1) and the mounting frame (31) are configured such that the relative movement between the vehicle body (1) and the mounting frame (31) positions the pallet (20) above the vehicle body (1). Conveying device.

2. The mounting frame (31) is provided with a horizontal drive unit configured to drive the horizontal movement of the mounting frame (31) relative to the vehicle body (1), The conveying device according to claim 1.

3. The aforementioned horizontal drive unit is A rolling element (321) is provided on the mounting frame (31) so as to rotate and make rolling contact with the upper surface of the vehicle body (1), The system includes a horizontal drive motor configured to drive the rotation of the rolling element (321), The conveying device according to claim 2.

4. The mounting frame (31) is further provided with an elastic material (33) configured to elastically press the rolling element (321) against the upper surface of the vehicle body (1). The conveying device according to claim 3.

5. A housing groove (112) is provided on the upper surface of the vehicle body (1), and the fork arm (2) is housed in the housing groove (112). The conveying device according to claim 1.

6. The mounting frame (31) is configured to move along the groove wall of the housing groove (112). The conveying device according to claim 5.

7. A mounting surface (111) is formed on the upper surface of the vehicle body (1) on which the pallet (20) is placed, and when the pallet (20) moves directly above the vehicle body (1), the mounting surface (111) is configured to support the pallet (20). The conveying device according to claim 1.

8. When the fork arm (2) extends relative to the vehicle body (1) and lifts the pallet (20), the vehicle body (1) is configured to autonomously move to the bottom of the pallet (20) relative to the fork arm (2), assuming that the mounting frame (31) is stationary. The conveying device according to any one of claims 1 to 7.

9. The fork arm (2) is spaced at intervals of 2 along the width direction of the fork arm (2). The vehicle body (1) has at least one pair of drive wheels (12) arranged symmetrically along the width direction, and the two fork arms (2) are arranged symmetrically with respect to the axis of symmetry of the at least one pair of drive wheels (12). The conveying device according to any one of claims 1 to 7.

10. The fork arm (2) is configured to switch between being supported by the ground and being detached from the ground, so that when the fork arm (2) is detached from the ground, it can pass over the bottom beam of the pallet (20), and after a portion of the fork arm (2) is inserted into the fork hole (201), a portion of the fork arm (2) located inside the fork hole (201) is supported by the ground. The conveying device according to any one of claims 1 to 7.

11. The aforementioned fork arm (2) is An arm body (21) with one end connected to the mounting frame (31), The system includes a support member (23) provided on the arm body (21) and separated from the mounting frame (31), which extends downward relative to the arm body (21) to support the fork arm (2), and is configured to retract upward to detach the fork arm (2) from the ground. The conveying device according to claim 10.

12. The fork arm (2) further comprises a lifting drive mechanism (22) configured to drive the support material (23) up and down relative to the arm body (21), and to drive the arm body (21) up and down relative to the mounting frame (31). The conveying device according to claim 11.

13. The lifting drive mechanism (22) comprises two first connecting rods (222) and a first drive assembly. One end of each first connecting rod (222) is hinged to the support material (23), The other end of each first connecting rod (222) is connected to the first drive assembly, which is configured to drive the other ends of the two first connecting rods (222) toward and toward each other to raise and lower the support member (23). The conveying device according to claim 12.

14. The first drive assembly is A screw (221) comprising a first screw segment (2211) and a second screw segment (2212) having opposite helical directions, Two first nut seats (223) are fitted into the first threaded segment (2211) and the second threaded segment (2212), and the other ends of the two first connecting rods (222) are hinged to each other, The system includes a lifting drive motor (227) configured to drive the rotation of the screw (221) and to drive the opposing or backward movement of the two first nut seats (223) along the screw (221), The conveying device according to claim 13.

15. The aforementioned lifting drive mechanism (22) is A second connecting rod (225) has a first end hinged to the mounting frame (31) and a second end supporting the arm body (21), The second connecting rod (225) is used to raise and lower the arm body (21). A second drive assembly configured to drive the rotation of ) The conveying device according to claim 12.

16. The second drive assembly described above is A screw (221) having a third screw segment (2213), A second nut seat (224) is pivotably fitted onto the third screw segment (2213) and the second end of the second connecting rod (225) is hinged to it, The system includes a lifting drive motor (227) configured to drive the rotation of the screw (221) and thereby drive the movement of the second nut seat (224), The conveying device according to claim 15.

17. The second nut seat (224) comprises a nut sleeve portion (2241) and a sliding seat portion (2243) slidably fitted onto the nut sleeve portion (2241), the nut sleeve portion (2241) being drive-fitted to the third screw segment (2213), the nut sleeve portion (2241) being provided with two position-restricting seat portions (2242) configured to limit the sliding stroke of the sliding seat portion (2243), and the second connecting rod (225) being hinge-connected to the sliding seat portion (2243). The conveying device according to claim 16.

18. A conveying device comprising the one described in any one of claims 1 to 17, Warehouse logistics system.

19. A pallet transport method that transports a pallet (20) using a transport device described in any one of claims 1 to 17, The mounting frame (31) of the conveying device moves horizontally relative to the vehicle body (1) of the conveying device, thereby inserting the fork arm (2) of the conveying device into the fork hole (201) of the pallet (20), The fork arm (2) moves vertically relative to the vehicle body (1) to lift the pallet (20), This includes positioning the pallet (20) directly above the vehicle body (1) by moving the mounting frame (31) and the vehicle body (1) horizontally relative to each other. Pallet transport method.

20. The relative horizontal movement of the mounting frame (31) and the vehicle body (1) is The mounting frame (31) remains stationary while the vehicle body (1) moves to the bottom of the pallet (20), The pallet transport method according to claim 19.

21. The fork arm (2) comprises an arm body (21) and a support member (23) configured to move vertically up and down relative to the arm body (21), and the support member (23) and the mounting frame (31) are provided at intervals. The fork arm (2) is inserted into the fork hole (201) to a set depth, and the support member (23) moves downward relative to the arm body (21) until it is supported by the ground, The pallet transport method according to claim 19.

22. When the support member (23) extends downward relative to the arm body (21), the fork arm (2) further extends deeper into the fork hole (201), The pallet transport method according to claim 21.

23. The fork arm (2) further comprises a lifting drive mechanism (22), After the fork arm (2) is inserted into the fixed position of the fork hole (201), the lifting drive mechanism (22) further includes driving the arm body (21) upward relative to the mounting frame (31) to raise the pallet, and synchronously driving the support member (23) downward relative to the arm body (21) so as to continuously press it against the ground, The pallet transport method according to claim 21.

24. When the pallet (20) is positioned above the vehicle body (1), the fork arm (20) lowers relative to the vehicle body (1), thereby bringing the pallet (20) into contact with the vehicle body (1). The support material (23) is further pulled upward until it detaches from the ground. The pallet transport method according to claim 21.

25. The aforementioned transport device carries the pallet (20) and operates to the target point, The fork arm (2) rises relative to the vehicle body (1), and the pallet (20) no longer comes into contact with the vehicle body (1), The vehicle body (1) moves horizontally relative to the mounting frame (31), thereby causing the vehicle body (1) to exit from the bottom of the pallet (20). The fork arm (2) lowers relative to the vehicle body (1), thereby lowering the pallet (20). The mounting frame (31) carries the fork arm (2) and retracts it relative to the vehicle body (1), thereby causing the fork arm (2) to retract from the fork hole (201) and returning the transport device to its original position. A pallet transport method according to any one of claims 19 to 24.

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