Stacking machine for stereoscopic warehouse

Abstract

The invention discloses a stacking machine for a stereoscopic warehouse, and belongs to the field of stacking machines, the stacking machine comprises a stand column, a cargo carrying table and a lifting mechanism, a walking mechanism is arranged on the lower portion of the stand column, and the lifting mechanism is used for driving the cargo carrying table to ascend and descend on the stand column; the pallet fork is used for forking goods on the goods shelf; the device further comprises a supporting mechanism, the supporting mechanism comprises a first rotating plate, the first rotating plate is rotationally connected with the first connecting plate through a rotating rod, the two ends of the first rotating plate are each in pivot joint with a first driving rod, the other end of each first driving rod is in pivot joint with the middle of the sliding base, a supporting arm is arranged on one side of the sliding base, and one end of the supporting arm is connected with an L-shaped lap joint plate. When the stacking machine takes and places goods, the lap joint plate is in lap joint with one side of the goods shelf. By arranging the supporting mechanism, extra supporting is formed for the stand column, the force borne by the stand column is effectively dispersed, the upsetting moment of the stand column is remarkably reduced, and the structural stability and safety of the stacking machine in the running process are improved.

Description

Technical Field

[0001] The present invention belongs to the field of stackers, and particularly relates to a stacker for a stereoscopic warehouse. Background Art

[0002] Under the background of the rapid development of the modern logistics and warehousing industries, the stereoscopic warehouse, with its high storage capacity and space utilization rate, has become a key facility for many enterprises to optimize warehouse management. By constructing multi-layer shelves in the vertical direction and combining automated storage and retrieval systems, the stereoscopic warehouse can significantly increase the storage density of goods and reduce the floor area of the warehouse, becoming an important development direction in the field of modern logistics warehousing.

[0003] As one of the core equipment in the stereoscopic warehouse, the stacker undertakes the important responsibility of quickly and accurately completing the tasks of storing and retrieving goods in the shelf aisles. It can move flexibly in the horizontal and vertical directions, and take out or place goods from the shelves through the telescopic movement of the fork. The quality of its operating performance is directly related to the operating efficiency, accuracy and reliability of the entire stereoscopic warehouse.

[0004] Currently, the common stackers on the market mainly consist of columns, traveling mechanisms, load platforms, lifting mechanisms, forks, etc. During the operation of the stacker, when the fork extends to pick up goods, due to the offset of the center of gravity of the goods relative to the column, the column will be subjected to an overturning moment. Specifically, after the fork extends, the weight of the goods will cause the center of gravity of the entire stacker to move outward, thus generating a moment that attempts to overturn the stacker. The magnitude of this moment is proportional to the weight of the goods and the vertical distance from the center of gravity of the goods to the bottom of the column.

[0005] When the stacker needs to handle goods with a relatively large weight, the overturning effect of the gravity generated by the goods on the column is significantly enhanced. The relatively large weight of the goods causes a substantial increase in the overturning moment, and the column needs to withstand a greater lateral force to maintain balance. This not only requires the column to have higher structural strength and stiffness to prevent deformation or damage under the action of the overturning moment, but also may cause obvious shaking of the stacker during operation. The generation of shaking will not only affect the accuracy of goods storage and retrieval, increase the risk of goods damage, but also may damage the mechanical structure and electrical system of the stacker itself, shortening the service life of the equipment.

[0006] In a stereoscopic warehouse, in order to make full use of space, goods are often stored on shelves at different heights. When the stacker crane picks up goods from a shelf at a higher position, since the vertical distance from the center of gravity of the goods to the bottom of the column increases, according to the calculation formula of the tipping moment (tipping moment = weight of the goods × vertical distance from the center of gravity of the goods to the bottom of the column), the tipping moment will increase significantly. In this case, the stacker crane is more likely to tilt during operation, seriously threatening the stability and safety of the stacker crane during operation. Once the stacker crane tilts, it may cause the goods to fall, triggering a safety accident and causing serious harm to personnel and equipment. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a stacker crane for a stereoscopic warehouse to solve the problem that the tipping moment generated by the existing stacker crane when handling goods affects the stability and safety of the stacker crane during operation.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is: A stacker crane for a stereoscopic warehouse, comprising: A column, with a traveling mechanism provided at the lower part of the column for driving the stacker crane to move between the ground rail and the overhead rail; A load platform, installed on one side of the column for handling goods; A lifting mechanism, including a horizontal output shaft motor, a drum, and a steel wire rope. One end of the steel wire rope is connected to the drum, and the other end passes around a pulley and is connected to the load platform for driving the load platform to move up and down along the column; Forks, which can extend left or right on the load platform for picking up goods on the shelf; It further includes a support mechanism. There are two groups of first cross braces on the load platform. The first cross braces are provided with a first guide rail and a first sliding seat. A first sliding block that is slidably connected to the first guide rail is provided at the lower part of the first sliding seat; a first connecting plate is fixedly connected to the middle of the first cross brace. The support mechanism includes a first rotating plate, and the first rotating plate is rotatably connected to the first connecting plate through a rotating rod. A first driving rod is pivotally connected to each end of the first rotating plate, and the other end of the first driving rod is pivotally connected to the middle of the sliding seat. A support arm is provided on one side of the sliding seat, and an L-shaped overlapping plate is connected to one end of the support arm. When the stacker crane picks up and places goods, the overlapping plate overlaps on one side of the shelf; A third guide rail and a telescopic driving mechanism are fixedly installed under the first connecting plate. The telescopic end of the telescopic driving mechanism is connected to a third sliding block, and the third sliding block is slidably installed on the third guide rail. A third rack is connected to one side of the third sliding block, and a third gear that meshes with the third rack is provided on the rotating rod.

[0009] Further, the fork includes a bottom fork fixedly installed on the load-carrying platform, a middle fork slidably installed on the upper part of the bottom fork, and an upper fork slidably installed on the upper part of the middle fork. Guide assemblies are provided on the side walls of the bottom fork and the middle fork; a driving motor is provided on one side of the bottom fork, a rotating shaft is connected to the output shaft of the driving motor, a first gear is installed on the rotating shaft, and a first rack engaged with the first gear is provided on the lower part of the middle fork; a first transmission shaft is rotatably connected to one side of the bottom fork, a second transmission shaft is rotatably connected to one side of the upper fork, and the rotating shaft, the first transmission shaft, and the second transmission shaft are connected by a chain drive; a second gear is provided on the second transmission shaft, and a second rack engaged with the second gear is provided on the lower part of the upper fork.

[0010] Further, the column adopts a single-column structure or a double-column structure. When adopting a double-column structure, the upper ends of the two columns are connected by a cross beam.

[0011] Further, a plurality of through slots are provided on both sides of the upper fork, a lifting plate is provided on the upper part of the upper fork, a plurality of parallel arms are pivotally connected to the lower sides of the two sides of the lifting plate, the lower ends of the arms are pivotally connected to the inside of the upper fork, connecting rods are connected between the arms on both sides at corresponding positions, at least one lifting drive mechanism is provided inside the upper fork, one end of the lifting drive mechanism is pivotally connected to the upper fork, the other end is pivotally connected to the connecting rod, and a linkage rod is connected between the plurality of connecting rods.

[0012] Further, the lifting drive mechanism and the telescopic drive mechanism adopt one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0013] Furthermore, guide wheels are provided on both sides of the overlapping plate, and the guide wheels correspond to the guide grooves on the lower part of the middle fork.

[0014] Further, a second cross brace is provided on one side of the first cross brace. A second connecting plate is fixedly connected to the lower part of the second cross brace. A second guide rail and a second sliding seat are provided on the lower part of the second connecting plate. The second sliding seat is slidably connected to the second guide rail through a second slider; the lower end of the rotating rod passes through the second connecting plate and is connected with a clamping mechanism. The clamping mechanism includes a second rotating plate, and a second driving rod is pivotally connected to each end of the second rotating plate. The other end of the second driving rod is pivotally connected to the middle part of the second sliding seat. A clamping rod is provided on one side of the second sliding seat. One end of the clamping rod is connected with a clamping plate. The clamping plate is located on both sides of the fork. The clamping mechanism and the supporting mechanism act synchronously.

[0015] Furthermore, a plurality of limiting blocks are fixedly connected to the inner wall of the clamping plate, and one side of the limiting block abuts against the cushion block of the tray.

[0016] Further, adjustment grooves are provided at both ends of the first rotating plate and the second rotating plate. End caps are provided at the ends of the adjustment grooves. An adjustment block is slidably connected inside the adjustment grooves. One end of the first driving rod or the second driving rod is pivotally connected to the adjustment block. An adjustment bolt is rotatably connected to the end cap, and the adjustment bolt is threadedly connected to the adjustment block for adjusting the position of the adjustment block within the adjustment groove.

[0017] Further, both the first sliding seat and the second sliding seat are of T-shaped structures. One end of the support arm passes through the first sliding seat and has a clearance fit with the first sliding seat. A first spring is sleeved outside the support arm. One end of the first spring abuts against the overlapping plate, and the other end abuts against the first sliding seat. One end of the clamping rod passes through the second sliding seat and has a clearance fit with the second sliding seat. A second spring is sleeved outside the clamping rod. One end of the second spring abuts against the clamping plate, and the other end abuts against the second sliding seat. The first spring and the second spring are used to compensate for the moving distances of the overlapping plate and the clamping plate.

[0018] The beneficial effects of the present invention are as follows: 1) By providing the support mechanism in the present invention, additional support is formed for the upright column, effectively dispersing the force borne by the upright column, significantly reducing the overturning moment of the upright column, and improving the structural stability and safety of the stacker during operation.

[0019] 2) The fork adopts a three-stage telescopic structure of a bottom fork, a middle fork, and an upper fork, ensuring the telescopic stroke of the fork, and the synchronous telescoping of the middle fork and the upper fork improves the efficiency of the fork in picking up goods.

[0020] 3) By providing a lifting plate on the upper part of the upper fork, when the fork picks up goods, the lifting plate is used to lift the goods, and the entire loading platform remains relatively stable, without causing a large change in the center of gravity, greatly reducing the overturning risk of the stacker and improving the stability and safety of the equipment operation. In addition, the lifting plate also prevents the overlapping plate from separating from the shelf when picking up goods, ensuring the supporting effect of the support mechanism.

[0021] 4) By providing guide wheels on both sides of the overlapping plate to support the middle part of the middle fork, the force received by the middle fork can be dispersed to both sides of the overlapping plate and then dispersed to the shelf, improving the overall stiffness of the fork and avoiding excessive deformation or stress concentration of the fork when picking up heavy objects.

[0022] 5) A clamping mechanism is provided on the loading platform. The clamping mechanism and the support mechanism act synchronously. When the support mechanism supports on the shelf, the clamping mechanism is released. When the support mechanism retracts, the clamping mechanism clamps the tray, ensuring the stability during the transportation of goods.

[0023] 6) A plurality of limit blocks are provided on the inner wall of the clamping plate to abut against the pads of the tray, further restricting the movement of the tray on the forklift. In the case of high-speed operation and emergency braking of the stacker, the limit blocks can prevent the tray from sliding relatively due to inertia, ensuring that the goods always remain in the correct position, greatly improving the stability of the goods during transportation and stacking.

[0024] 7) By providing adjustment grooves at both ends of the first rotating plate and the second rotating plate, and arranging adjustment blocks in the adjustment grooves, it is convenient to adjust the center distance between the first driving rod or the second driving rod and the first rotating plate or the second rotating plate, thereby adjusting the moving distance of the first sliding seat or the second sliding seat, and ensuring the effectiveness of the support mechanism and the clamping mechanism.

[0025] 8) By respectively providing a first spring and a second spring outside the support arm and the clamping rod, the moving distances of the overlapping plate and the clamping plate are compensated, avoiding the failure of the support mechanism caused by too small a moving distance of the overlapping plate or the deformation or even toppling of the shelf caused by too large a moving distance, and also avoiding the failure of the clamping mechanism caused by too small a moving distance of the clamping plate or the deformation of the tray or the clamping plate caused by too large a moving distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic structural diagram of a stacker for a stereoscopic warehouse according to the present invention.

[0027] Figure 2 FIG. is an assembly schematic diagram of the forklift, the support mechanism and the clamping mechanism with the load platform.

[0028] Figure 3 FIG. is a partial schematic diagram of the forklift.

[0029] Figure 4 FIG. is a partial cross-sectional view of the forklift.

[0030] Figure 5 FIG. is a partial cross-sectional view of the upper fork.

[0031] Figure 6 FIG. is an assembly schematic diagram of the support mechanism and the clamping mechanism with the load platform.

[0032] Figure 7 FIG. is a schematic diagram of one side of the support mechanism.

[0033] Figure 8 FIG. is a schematic diagram of the other side of the support mechanism.

[0034] Figure 9 FIG. is Figure 8 The enlarged view at A in FIG.

[0035] Figure 10 FIG. is a schematic structural diagram of the first rotating plate.

[0036] Figure 11 FIG. is a schematic diagram of one side of the clamping mechanism.

[0037] Figure 12 It is a schematic diagram of the other side of the clamping mechanism.

[0038] Figure 13 It is a diagram showing the state of the clamping mechanism clamping the tray.

[0039] Figure 14 It is a diagram showing the usage state of the support mechanism.

[0040] In the figure: 1. Column; 2. Lifting mechanism; 3. Traveling mechanism; 4. Cross beam; 5. Loading platform; 501. First cross brace; 502. Second cross brace; 503. First connecting plate; 504. Second connecting plate; 505. First guide rail; 506. Second guide rail; 6. Fork; 601. Bottom fork; 602. Middle fork; 603. Upper fork; 604. Driving motor; 605. Guide assembly; 606. Rotating shaft; 607. First transmission shaft; 608. Second transmission shaft; 609. First gear; 610. Second gear; 611. First rack; 612. Second rack; 613. Lifting plate; 614. Through groove; 615. Support arm; 616. Connecting rod; 617. Linking rod; 618. Lifting drive mechanism; 7. Support mechanism; 701. First rotating plate; 702. First sliding seat; 703. Support arm; 704. Lapping plate; 705. First spring; 706. Guide wheel; 707. First driving rod; 708. Telescopic drive mechanism; 709. Third guide rail; 710. Third slider; 711. Third rack; 712. Third gear; 713. Rotating rod; 714. Adjusting groove; 715. Adjusting block; 716. End cover; 717. Adjusting bolt; 718. First slider; 8. Clamping mechanism; 801. Second rotating plate; 802. Second driving rod; 803. Second sliding seat; 804. Clamping rod; 805. Second spring; 806. Clamping plate; 807. Limiting block; 808. Second slider; 9. Tray; 10. Shelf. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached Figures 1 - 14 , it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0043] As Figure 1 shown, a stacker for a stereoscopic warehouse includes a column 1, a load platform 5, a lifting mechanism 2 and a fork 6. A traveling mechanism 3 is provided at the lower part of the column 1 for driving the stacker to move between the ground rail and the overhead rail; the load platform 5 is installed on one side of the column 1 for carrying goods; the lifting mechanism 2 includes a horizontal output shaft motor, a drum and a steel wire rope. One end of the steel wire rope is connected to the drum, and the other end passes around a pulley and is connected to the load platform 5 for driving the load platform 5 to move up and down on the column 1; the fork 6 retracts left or right on the load platform 5 for picking up goods on the shelf.

[0044] As Figure 2 、 Figures 6 - 8 shown, it further includes a support mechanism 7. Two groups of first cross braces 501 are provided on the load platform 5. A first guide rail 505 and a first sliding seat 702 are provided on the first cross brace 501. A first sliding block 718 slidably connected to the first guide rail 505 is provided at the lower part of the first sliding seat 702; a first connecting plate 503 is fixedly connected to the middle of the first cross brace 501. The support mechanism 7 includes a first rotating plate 701. The first rotating plate 701 is rotatably connected to the first connecting plate 503 through a rotating rod 713. A first driving rod 707 is pivotally connected to each end of the first rotating plate 701. The other end of the first driving rod 707 is pivotally connected to the middle of the sliding seat. A support arm 703 is provided on one side of the sliding seat. One end of the support arm 703 is connected with an L-shaped lapping plate 704. As Figure 14 shown, when the stacker picks up and places goods, the lapping plate 704 laps on one side of the shelf 10.

[0045] As Figure 8 、 Figure 9 shown, a third guide rail 709 and a telescopic driving mechanism 708 are fixedly installed at the lower part of the first connecting plate 503. The telescopic end of the telescopic driving mechanism 708 is connected with a third sliding block 710. The third sliding block 710 is slidably installed on the third guide rail 709. A third rack 711 is connected to one side of the third sliding block 710. A third gear 712 meshing with the third rack 711 is provided on the rotating rod 713.

[0046] During the process of the stacker picking up and placing goods, due to the weight of the goods and the dynamic force generated by the operating actions, the column will be subjected to a large overturning moment. By setting up the support mechanism 7, before picking up and placing goods, the telescopic drive mechanism 708 performs a telescopic action. The third rack 711 is used to drive the third gear 712 to rotate, thereby driving the rotating rod 713 and the first connecting plate 503 above the rotating rod 713 to rotate. The first connecting plate 503 uses the first driving rods 707 at both ends to push the sliding seat to move towards the shelf side on the first guide rail 505. Furthermore, the overlapping plate 704 on one side of the sliding seat overlaps on the shelf 10, forming an additional support for the column, effectively dispersing the force borne by the column, significantly reducing the overturning moment of the column. This not only improves the structural stability of the stacker during operation but also avoids the lifting jamming of the loading platform 5 caused by the deformation of the column after long-term operation. In addition, the stable support of the support mechanism 7 also reduces the impact and vibration on key components such as the lifting mechanism 2 and the fork 6 due to the shaking of the column, protects the normal operation of these components, reduces the risk of their damage, further extends the service life of the equipment, and improves the reliability and stability of the equipment.

[0047] As Figures 3 - 5 shown, the fork 6 includes a bottom fork 601 fixedly installed on the loading platform 5, a middle fork 602 slidably installed on the upper part of the bottom fork 601, and an upper fork 603 slidably installed on the upper part of the middle fork 602. Guide assemblies 605 are provided on the side walls of the bottom fork 601 and the middle fork 602; a driving motor 604 is provided on one side of the bottom fork 601. A rotating shaft 606 is connected to the output shaft of the driving motor 604. A first gear 609 is installed on the rotating shaft 606. A first rack 611 meshing with the first gear 609 is provided at the lower part of the middle fork 602; a first transmission shaft 607 is rotatably connected to one side of the bottom fork 601, and a second transmission shaft 608 is rotatably connected to one side of the upper fork 603. The rotating shaft 606, the first transmission shaft 607, and the second transmission shaft 608 are connected by a chain drive; a second gear 610 is provided on the second transmission shaft 608, and a second rack 612 meshing with the second gear 610 is provided at the lower part of the upper fork 603.

[0048] The fork 6 adopts a three-stage telescopic structure of the bottom fork 601, the middle fork 602, and the upper fork 603, ensuring the telescopic stroke of the fork 6. When the driving motor 604 drives the rotating shaft 606 to rotate, the first gear 609 is used to drive the first rack 611 to move towards one side of the bottom fork 601. At the same time, the rotating shaft 606 drives the second transmission shaft 608 to rotate through a chain drive, thereby using the second gear 610 to drive the second rack 612 to move towards one side of the bottom fork 601 synchronously, realizing the synchronous telescoping of the middle fork 602 and the upper fork 603; when the driving motor 604 rotates in reverse, the middle fork 602 and the upper fork 603 move towards the other side of the loading platform 5, realizing the left and right telescoping of the fork 6 on the loading platform 5, so as to perform the fork-taking operation on the goods on the shelf.

[0049] The column 1 adopts a single-column structure or a double-column structure. As Figure 1 shown, in this embodiment, the column adopts a double-column structure, and the upper ends of the two columns 1 are connected by a cross beam 4. The double-column structure can bear a greater load and is suitable for handling heavier goods. In addition, due to the high strength and stability of the double-column structure, during long-term use, its structural deformation is small, and it can maintain good performance and accuracy.

[0050] As Figure 4 shown, a plurality of through grooves 614 are provided on both sides of the upper fork 603. An elevating plate 613 is provided on the upper part of the upper fork 603. A plurality of parallel support arms 615 are pivotally connected to both sides of the lower part of the elevating plate 613. The lower ends of the support arms 615 are pivotally connected to the inside of the upper fork 603. The support arms 615 on both sides at the corresponding positions are connected by a connecting rod 616. At least one elevating drive mechanism 618 is provided inside the upper fork 603. One end of the elevating drive mechanism 618 is pivotally connected to the upper fork 603, and the other end is pivotally connected to the connecting rod 616. A linkage rod 617 is connected between the plurality of connecting rods 616.

[0051] In the traditional way of fork-lifting goods, after the fork 6 is inserted into the bottom of the pallet, the entire loading platform 5 is lifted to separate the goods from the shelf. The overall lifting of the loading platform 5 will change the center of gravity of the stacker, increasing the overturning moment of the column. Especially when handling heavier goods, the risk of overturning is greater. However, in the present invention, the elevating plate 613 is used to lift the goods, and the entire loading platform 5 remains relatively stable, without causing a large change in the center of gravity, greatly reducing the overturning risk of the stacker and improving the stability and safety of the equipment operation.

[0052] In addition, after the entire loading platform 5 is lifted, the overlapping plate 704 will be separated from the shelf 10, resulting in a weakened or even disappeared supporting effect of the supporting mechanism 7, affecting the effect of the supporting mechanism 7.

[0053] The elevating drive mechanism 618 and the telescopic drive mechanism 708 adopt one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0054] As Figure 7 shown, guide wheels 706 are provided on both sides of the overlapping plate 704, and the guide wheels 706 correspond to the guide grooves on the lower part of the middle fork 602.

[0055] During the operation of the fork 6 of the stacker, the middle fork 602 will bear various dynamic forces from the goods, its own weight and operation. The guide wheels 706 support the middle part of the middle fork 602, and can disperse the forces received by the middle fork 602 to both sides of the overlapping plate 704, and then disperse them to the shelf, improving the overall stiffness of the fork 6 and avoiding excessive deformation or stress concentration of the fork 6 when lifting heavy objects.

[0056] AsFigure 6 As shown, a second cross brace 502 is provided on one side of the first cross brace 501. As Figure 11 、 Figure 12 shown, a second connecting plate 504 is fixedly connected to the lower part of the second cross brace 502. A second guide rail 506 and a second sliding seat 803 are provided below the second connecting plate 504. The second sliding seat 803 is slidably connected to the second guide rail 506 through a second slider 808; the lower end of the rotating rod 713 passes through the second connecting plate 504 and is connected to a clamping mechanism 8. As Figure 11 、 Figure 12 shown, the clamping mechanism 8 includes a second rotating plate 801. A second driving rod 802 is pivotally connected to each end of the second rotating plate 801. The other end of the second driving rod 802 is pivotally connected to the middle of the second sliding seat 803. A clamping rod 804 is provided on one side of the second sliding seat 803. One end of the clamping rod 804 is connected to a clamping plate 806. The clamping plate 806 is located on both sides of the fork 6. The clamping mechanism 8 and the supporting mechanism 7 act synchronously. Specifically, as Figure 13 shown, after the goods are fetched onto the loading platform 5, the telescopic driving mechanism 708 expands and contracts to drive the overlapping plate 704 to retract. At the same time, the rotating rod 713 drives the second rotating plate 801 to rotate, and uses the second driving rod 802 to drive the second sliding seat 803, the clamping rod 804 and the clamping plate 806 to approach each other, clamping the pallet 9 between the clamping plates 806 on both sides, ensuring the stability during the transportation of the goods. When the goods are stacked from the loading platform 5 onto the shelf, when the supporting mechanism 7 expands and contracts towards the shelf 10 for support, the clamping mechanism 8 synchronously releases the pallet 9 under the action of the rotating rod 713, without affecting the fork 6 to transport the goods to the shelf.

[0057] As Figure 11 shown, a number of limiting blocks 807 are fixedly connected to the inner wall of the clamping plate 806. One side of the limiting block 807 abuts against the cushion block of the pallet 9, further restricting the movement of the pallet on the fork 6. In cases such as the high-speed operation and emergency braking of the stacker, the limiting block 807 can prevent the pallet from sliding relatively due to inertia, ensuring that the goods always remain in the correct position, greatly improving the stability of the goods during transportation and stacking.

[0058] As Figure 10 shown, adjusting grooves 714 are provided at both ends of the first rotating plate 701 and the second rotating plate 801. End caps 716 are provided at the ends of the adjusting grooves 714. An adjusting block 715 is slidably connected inside the adjusting grooves 714. One end of the first driving rod 707 or the second driving rod 802 is pivotally connected to the adjusting block 715. An adjusting bolt 717 is rotatably connected to the end cap 716. The adjusting bolt 717 is threadedly connected to the adjusting block 715, used to adjust the position of the adjusting block 715 in the adjusting groove 714, thereby adjusting the moving displacement of the overlapping plate 704 or the clamping plate 806, ensuring the effects of the supporting mechanism 7 and the clamping mechanism 8.

[0059] As Figures 7 - 8 , Figures 11 - 12 shown, both the first sliding seat 702 and the second sliding seat 803 are of T-shaped structure. One end of the support arm 703 passes through the first sliding seat 702 and has a clearance fit with the first sliding seat 702. A first spring 705 is sleeved outside the support arm 703. One end of the first spring 705 abuts against the overlapping plate 704, and the other end abuts against the first sliding seat 702. One end of the clamping rod 804 passes through the second sliding seat 803 and has a clearance fit with the second sliding seat 803. A second spring 805 is sleeved outside the clamping rod 804. One end of the second spring 805 abuts against the clamping plate 806, and the other end abuts against the second sliding seat 803. The first spring 705 and the second spring 805 are used to compensate for the moving distances of the overlapping plate 704 and the clamping plate 806, avoiding the failure of the support mechanism caused by the too small moving distance of the overlapping plate 704 or the deformation or even toppling of the shelf caused by the too large moving distance, and, avoiding the failure of the clamping mechanism 8 caused by the too small moving distance of the clamping plate 806 or the deformation of the tray 9 or the clamping plate 806 caused by the too large moving distance.

[0060] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of the present technology make various modifications or supplements or use similar ways to replace the specific embodiments described, as long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A stacker for a three-dimensional warehouse, comprising: A column, with a traveling mechanism provided at the lower part of the column for driving the stacker to move between the ground rail and the overhead rail; A load platform, installed on one side of the column for carrying goods; A lifting mechanism, including a horizontally output shaft motor, a drum, and a steel wire rope. One end of the steel wire rope is connected to the drum, and the other end passes around a pulley and is connected to the load platform for driving the load platform to move up and down along the column; Forks, which can extend left or right on the load platform for picking up goods on the shelves; It is characterized in that it further includes a support mechanism. There are two groups of first cross braces on the load platform. A first guide rail and a first sliding seat are provided on the first cross brace. A first sliding block that is slidably connected to the first guide rail is provided at the lower part of the first sliding seat; A first connecting plate is fixedly connected to the middle of the first cross brace. The support mechanism includes a first rotating plate, and the first rotating plate is rotatably connected to the first connecting plate through a rotating rod. One first driving rod is pivotally connected to each end of the first rotating plate, and the other end of the first driving rod is pivotally connected to the middle of the sliding seat. A support arm is provided on one side of the sliding seat, and an L-shaped lapping plate is connected to one end of the support arm. When the stacker picks up and places goods, the lapping plate laps on one side of the shelf; A third guide rail and a telescopic driving mechanism are fixedly installed below the first connecting plate. The telescopic end of the telescopic driving mechanism is connected to a third sliding block, and the third sliding block is slidably installed on the third guide rail. A third rack is connected to one side of the third sliding block, and a third gear that meshes with the third rack is provided on the rotating rod.

2. The stacker for a stereoscopic warehouse according to claim 1, characterized in that, The forks include a bottom fork fixedly installed on the load platform, a middle fork slidably installed on the upper part of the bottom fork, and an upper fork slidably installed on the upper part of the middle fork. Guide assemblies are provided on the side walls of the bottom fork and the middle fork; A driving motor is provided on one side of the bottom fork. A rotating shaft is connected to the output shaft of the driving motor, and a first gear is installed on the rotating shaft. A first rack that meshes with the first gear is provided at the lower part of the middle fork; A first transmission shaft is rotatably connected to one side of the bottom fork, and a second transmission shaft is rotatably connected to one side of the upper fork. The rotating shaft, the first transmission shaft, and the second transmission shaft are connected by a chain drive; A second gear is provided on the second transmission shaft, and a second rack that meshes with the second gear is provided at the lower part of the upper fork.

3. A stacker for a stereoscopic warehouse according to claim 1, characterized in that, The column adopts a single-column structure or a double-column structure. When adopting a double-column structure, the upper ends of the two columns are connected by a cross beam.

4. A stacker for a stereoscopic warehouse according to claim 2, characterized in that, A number of through grooves are provided on both sides of the upper fork. A lifting plate is provided on the upper part of the upper fork. A number of parallel support arms are pivotally connected to the lower sides of the two sides of the lifting plate. The lower ends of the support arms are pivotally connected to the inside of the upper fork. Connecting rods are connected between the support arms on both sides at the corresponding positions. At least one lifting driving mechanism is provided inside the upper fork. One end of the lifting driving mechanism is pivotally connected to the upper fork, and the other end is pivotally connected to the connecting rod. A linkage rod is connected between the multiple connecting rods.

5. A stacker for a stereoscopic warehouse according to claim 4, characterized in that, The lifting driving mechanism and the telescopic driving mechanism adopt one of a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

6. A stacker for a stereoscopic warehouse according to claim 4, characterized in that, Guide wheels are provided on both sides of the lapping plate, and the guide wheels correspond to the guide grooves at the lower part of the middle fork.

7. A stacker for a stereoscopic warehouse according to any one of claims 1-6, characterized in that, A second cross brace is provided on one side of the first cross brace. A second connecting plate is fixedly connected to the lower part of the second cross brace. A second guide rail and a second sliding seat are provided below the second connecting plate. The second sliding seat is slidably connected to the second guide rail through a second slider. The lower end of the rotating rod passes through the second connecting plate and is connected with a clamping mechanism. The clamping mechanism includes a second rotating plate. A second driving rod is pivotally connected to each end of the second rotating plate. The other end of the second driving rod is pivotally connected to the middle part of the second sliding seat. A clamping rod is provided on one side of the second sliding seat. One end of the clamping rod is connected with a clamping plate. The clamping plate is located on both sides of the forklift fork. The clamping mechanism and the supporting mechanism act synchronously.

8. A stacker for a stereoscopic warehouse according to claim 7, characterized in that, A plurality of limiting blocks are fixedly connected to the inner wall of the clamping plate. One side of the limiting block abuts against the cushion block of the tray.

9. A stacker for a stereoscopic warehouse according to claim 7, characterized in that, Adjustment grooves are provided at both ends of the first rotating plate and the second rotating plate. End covers are provided at the ends of the adjustment grooves. Adjustment blocks are slidably connected inside the adjustment grooves. One end of the first driving rod or the second driving rod is pivotally connected to the adjustment block. An adjustment bolt is rotatably connected to the end cover. The adjustment bolt is threadedly connected to the adjustment block for adjusting the position of the adjustment block in the adjustment groove.

10. A stacker for a stereoscopic warehouse according to claim 7, characterized in that, Both the first sliding seat and the second sliding seat are of T-shaped structures. One end of the supporting arm passes through the first sliding seat and is in clearance fit with the first sliding seat. A first spring is sleeved outside the supporting arm. One end of the first spring abuts against the overlapping plate, and the other end abuts against the first sliding seat. One end of the clamping rod passes through the second sliding seat and is in clearance fit with the second sliding seat. A second spring is sleeved outside the clamping rod. One end of the second spring abuts against the clamping plate, and the other end abuts against the second sliding seat. The first spring and the second spring are used to compensate for the moving distance of the overlapping plate and the clamping plate.

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