A stacking device for three-dimensional stacking of transformer cores

Abstract

The application relates to the technical field of roadway stacker for stereoscopic warehouses, and discloses a stacking device for stereoscopic stacking of transformer cores, which comprises two tracks, a stand is slidingly installed between the two tracks, an industrial computer box is fixedly installed on one side of the stand, an elevator is fixedly installed on the other side of the stand, a lifting platform is slidingly installed in the stand, two fixed forks are fixedly installed on the inner bottom surface of the lifting platform in a symmetrical mode, a middle fork is slidingly installed on the fixed fork, a front fork is slidingly installed on the middle fork, and a slide beam is fixedly installed on the lifting platform at the positions on both sides of each fixed fork. The slide beam and the follower structure are integrated on the lifting platform, when the middle fork is extended forward, the lower end of the inclined support rod drives the follower to synchronously displace along the slide beam, at the same time, the bidirectional air cylinder built in the follower is connected with the air compression equipment through the air pipe, drives the double-sided wedge block to transversely advance, and the pre-tightening limiting block is rapidly inserted into the limiting groove of the slide beam.

Description

Technical Field

[0001] This invention relates to the field of stacker cranes for automated warehouses, and particularly to a stacking device for stacking transformer cores in a three-dimensional manner. Background Technology

[0002] In the mass production of transformer cores, silicon steel sheets are the core magnetic material. The thickness of a single sheet is usually only 0.23 to 0.35 mm. The core of a large transformer often requires thousands or even tens of thousands of sheets to be stacked. Due to the limited workshop area and turnover efficiency, enterprises generally use automated three-dimensional warehouses to store semi-finished silicon steel sheets in layers. Stacker cranes in aisles are used to achieve rapid entry and exit and precise delivery. This not only greatly reduces the floor space occupied, but also reduces the corner damage caused by manual handling, and provides a continuous supply guarantee for the subsequent automatic stacking process.

[0003] However, in practical applications, when the forks carry bundles of silicon steel sheets (each bundle often weighs hundreds of kilograms) and are fully extended, the cantilever length between the fixed fork, middle fork, and front fork increases. In addition, the silicon steel sheets have a high density and a high center of gravity, causing significant elastic flexural deformation at the fork ends. Although this flexural deformation is within the elastic range, it is enough to cause the pallet plane to tilt at an angle of several millimeters or even larger. For silicon steel sheets with smooth surfaces and only weak friction between them, this slight tilt can easily cause the top or edge sheets to slowly slip, eventually leading to overall instability and detachment when the stacker crane accelerates, decelerates, or reverses direction. It can be said that how to effectively suppress pallet tilting caused by flexural deformation and eliminate support lag caused by transmission clearance without increasing the weight of the forks has become a technical problem to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a stacking device for three-dimensional stacking of transformer cores, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A stacking device for three-dimensional stacking of transformer cores includes two tracks, with a support frame slidably installed between the two tracks. An industrial control box is fixedly installed on one side of the support frame, and a hoist is fixedly installed on the other side. A lifting platform is slidably installed inside the support frame. Two fixed forks are symmetrically fixedly installed on the inner bottom surface of the lifting platform. A middle fork and a front fork are slidably installed on each fixed fork. A slide beam is fixedly installed on each side of the lifting platform located on both sides of each fixed fork. A follower is movably installed within the slide beam, and the follower is adjustablely movably connected to the lower end face of the corresponding middle fork via multiple inclined planes. The strut and the follower include a U-shaped slide, in which multiple mounting seats are symmetrically fixedly installed. A rectangular slider is slidably installed in each mounting seat. A pre-tightening limit block is movably installed between the mounting seat and the rectangular slider. A bidirectional cylinder is fixedly installed on the bottom surface of the U-shaped slide between the multiple mounting seats. The bidirectional cylinder is connected to the air compression equipment in the lifting platform through an air pipe. Two piston rods are installed inside the bidirectional cylinder, and one end of each piston rod extends away from the bidirectional cylinder and is fixedly installed with a double-sided wedge. The double-sided wedge is movably connected to two adjacent pre-tightening limit blocks.

[0006] As a further preferred embodiment of the present invention, two fixed enclosure plates are symmetrically fixedly installed on the outer side of the slide beam. Two supporting angle irons are fixedly connected to the lower end face of the slide beam. The fixed enclosure plates provide a connection foundation for the slide beam to be fixedly installed in the inner bottom beam of the lifting platform, while the supporting angle irons provide additional support strength for the end of the slide beam, so that after the U-shaped slide block moves into the slide beam located above the supporting angle irons, it provides a stable foundation for it.

[0007] As a further preferred embodiment of the present invention, two first sliding grooves are provided on both sides of the slide beam to provide a sliding path for the U-shaped slide. The slide beam located between the two first sliding grooves on the same side of the slide beam is also provided with an avoidance groove. The slide beam located on both sides of the avoidance groove is provided with multiple limiting grooves. The limiting grooves provide a basis for the U-shaped slide to be limited and fixed by pre-tightening limiting blocks. A drag chain is fixedly installed on one side of the inner bottom surface of the slide beam. The drag chain is used to provide guiding bending and protection functions for the air pipe connected to the bidirectional cylinder.

[0008] As a further preferred embodiment of the present invention, two slide rails adapted to the first slide groove are symmetrically fixedly installed on both sides of the U-shaped slide block. The slide rails are slidably installed in the corresponding first slide groove. The U-shaped slide block has protruding channels on both sides near each mounting seat.

[0009] As a further preferred embodiment of the present invention, the mounting base has a cavity adapted to the rectangular slider. The inner top surface and inner bottom surface of the mounting base are provided with limiting slides. The upper end surface and lower end surface of the rectangular slider are detachably fixedly mounted with a first limiting block. The first limiting block passes through and slides in the corresponding limiting slide. The rectangular slider has a guide groove on one side relative to the pre-tightening limiting block. The rectangular slider is used to provide a mounting base for one end of the diagonal brace, while the first limiting block can prevent the rectangular slider from slipping out of the internal cavity of the mounting base.

[0010] As a further preferred embodiment of the present invention, the mounting base is rotatably mounted with a collar on one side of the bidirectional cylinder, providing an installation and radial movement path for the pre-tightening limit block.

[0011] As a further preferred embodiment of the present invention, the pre-tightening limiting block includes a push block, one side of which is integrally formed with a second limiting block. The side of the push block opposite to the second limiting block has a slope adapted to the guide groove, thereby allowing the radially moving push block to push the rectangular slider to slide within the mounting base. The second limiting block has two oblong holes, which pass through and slidably engage with corresponding collars. The push block and the second limiting block, on the side opposite to the double-sided wedge, have a shared slope adapted to one side of the double-sided wedge and are integrally formed with a connecting slider. The longitudinal section of the connecting slider is T-shaped. The end of the second limiting block away from the connecting slider has a guide slope adapted to the limiting groove. Inserted into the corresponding protruding channel, when the push block and the second limiting block are pushed by the double-sided wedge, the push block and the second limiting block move synchronously. The push block is located on the inner side of the mounting base, and the second limiting block is located on the outer side of the mounting base opposite to the push block. One end of the second limiting block passes through the corresponding protruding channel and is inserted into the corresponding limiting groove to complete the limiting and fixing of the U-shaped slide. This prevents the diagonal brace from exerting downward pressure on the U-shaped slide due to the deflection of the end of the middle fork, which would push the U-shaped slide to move and cause the support force to fail. At the same time, the push block synchronously pushes the corresponding rectangular slider to slide in the corresponding mounting base, thereby establishing a preload and eliminating the assembly gap between the diagonal brace and the rectangular slider and between the rectangular slider and the mounting base.

[0012] As a further preferred embodiment of the present invention, the slopes on both sides of the double-sided wedge are provided with a second sliding groove adapted to the connecting slider. The second sliding groove and the corresponding connecting slider pass through each other and slide in cooperation, so that when the piston rod pushes and pulls the double-sided wedge, it simultaneously pushes and pulls the two sets of push blocks and the second limiting block connected to the double-sided wedge.

[0013] As a further preferred embodiment of the present invention, four bearing seats are fixedly installed at the lower end of the middle fork located on both sides of the fixed fork, and one end of the diagonal brace is rotatably connected to the corresponding bearing seat, while the other end is rotatably connected between the two corresponding rectangular sliders, thereby realizing that multiple diagonal braces move synchronously with the middle fork.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by integrating a slide beam and a follower structure on the lifting platform, when the fork extends forward, the diagonal brace at its lower end drives the follower to move synchronously along the slide beam. At the same time, the bidirectional cylinder built into the follower is connected to an air compression device via an air pipe, driving the double-sided wedge block to advance laterally, so that the pre-tightening limit block is quickly inserted into the limit groove of the slide beam, achieving rigid locking of the U-shaped slide seat, and simultaneously pushing the rectangular slider to slide along the mounting seat, thereby applying a controllable pre-tightening force to the diagonal brace, completely eliminating the assembly gap between the diagonal brace and the rectangular slider, and between the rectangular slider and the mounting seat, thereby suppressing the tendency of the diagonal brace to exert downward displacement on the U-shaped slide seat due to the deflection of the end of the fork, reducing the risk of stacking skew caused by fork deflection, and significantly improving the safety of automated three-dimensional stacking operations of heavy silicon steel sheets. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the first state of the lifting platform of the present invention; Figure 3 This is a schematic diagram of the second state of the lifting platform of the present invention; Figure 4 This is a schematic diagram of the slide beam structure of the present invention; Figure 5 This is a partial cross-sectional schematic diagram of the follower of the present invention; Figure 6 This is a schematic diagram of the U-shaped slide structure of the present invention; Figure 7 This is a schematic diagram of the assembly structure of the rectangular slider and the pre-tightening limiting block of the present invention.

[0016] In the diagram: 1. Track; 2. Frame; 3. Control box; 4. Hoist; 5. Lifting platform; 6. Fixed fork; 7. Middle fork; 8. Front fork; 9. Slide beam; 10. Follower; 11. U-shaped slide; 12. Mounting seat; 13. Rectangular slider; 14. Pre-tightening limit block; 15. Two-way cylinder; 16. Piston rod; 17. Double-sided wedge; 18. Fixed enclosure; 19. Support angle iron; 20. First slide groove; 21. Limit groove; 22. Clearance groove; 23. Cable chain; 24. Slide rail; 25. Protruding channel; 26. Limit slide; 27. Collar; 28. First limit block; 29. ​​Guide groove; 30. Push block; 31. Second limit block; 32. Waist-shaped hole; 33. Connecting slider; 34. Second slide groove; 35. Shaft seat; 36. Diagonal brace. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-7 As shown, the present invention provides a stacking device for three-dimensional stacking of transformer cores, comprising two tracks 1, a frame 2 slidably installed between the two tracks 1, a control box 3 fixedly installed on one side of the frame 2, a hoist 4 fixedly installed on the other side of the frame 2, a lifting platform 5 slidably installed inside the frame 2, two fixed forks 6 symmetrically fixedly installed on the inner bottom surface of the lifting platform 5, a middle fork 7 slidably installed on the fixed fork 6, and a front fork 8 slidably installed on the middle fork 7, and a slide beam 9 fixedly installed on both sides of the lifting platform 5 at each fixed fork 6, a follower 10 movably installed inside the slide beam 9, and multiple diagonal braces 36 movably connected to the lower end face of the corresponding middle fork 7 in an adjustable manner. The device 10 includes a U-shaped slide 11, in which multiple mounting seats 12 are symmetrically fixedly installed. A rectangular slider 13 is slidably installed in each mounting seat 12. A pre-tightening limit block 14 is movably installed between the mounting seat 12 and the rectangular slider 13. A bidirectional cylinder 15 is fixedly installed on the bottom surface of the U-shaped slide 11 located between the multiple mounting seats 12. The bidirectional cylinder 15 is connected to the air compression equipment in the lifting platform 5 through an air pipe. Two piston rods 16 are inserted in the bidirectional cylinder 15. One end of each piston rod 16 extends away from the bidirectional cylinder 15 and is fixedly installed with a double-sided wedge 17. The double-sided wedge 17 is movably connected to the two adjacent pre-tightening limit blocks 14.

[0019] In this embodiment, two fixed enclosure plates 18 are symmetrically fixedly installed on the outer side of the slide beam 9, and two supporting angle irons 19 are fixedly connected to the lower end face of the fixed enclosure plates 18 and the slide beam 9.

[0020] In this embodiment, two first sliding grooves 20 are provided on both sides of the slide beam 9. The slide beam 9 located between the two first sliding grooves 20 on the same side of the slide beam 9 is also provided with a clearance groove 22. The slide beam 9 located on both sides of the clearance groove 22 is provided with multiple limiting grooves 21. A drag chain 23 is fixedly installed on one side of the inner bottom surface of the slide beam 9. Specifically, before the actual picking operation, after the preparation work is completed, the industrial control box 3 controls the upright frame 2 to move along the track 1 to the front of the target shelf in the automated warehouse where iron core silicon steel sheets are stored. The lifting machine 4 drives the lifting platform 5 to rise to the height corresponding to the target storage position of the shelf, so that the fixed fork 6, the middle fork 7 and the front fork 8 are aligned with the pallet carrying the silicon steel sheets on the storage position. Then, the middle fork 7 is driven to extend outward along the fixed fork 6. Two slide rails 24 that are adapted to the first slide groove 20 are symmetrically fixed on both sides of the U-shaped slide block 11. The slide rails 24 are slidably installed in the corresponding first slide groove 20. So, when the middle fork 7 extends, the shaft seat 35 drives the diagonal support rod 36 to move synchronously. The other end of the diagonal support rod 36 is rotatably connected to the rectangular slider 13 and pushes the rectangular slider 13 to slide in the mounting seat 12. At the same time, the U-shaped slide block 11 in the follower 10 slides along the first slide groove 20 in the slide beam 9 through the slide rails 24 on both sides.

[0021] In this embodiment, protruding channels 25 are provided on both sides of the U-shaped slide block 11 near each mounting base 12. A cavity adapted to the rectangular slider 13 is provided within the mounting base 12. Limiting slides 26 are provided on both the inner top and bottom surfaces of the mounting base 12. A first limiting block 28 is detachably fixed to both the upper and lower ends of the rectangular slider 13. The first limiting block 28 passes through and slides within the corresponding limiting slide 26. A guide groove 29 is provided on the side of the rectangular slider 13 opposite to the pre-tightening limiting block 14. A collar 27 is rotatably mounted on the side of the mounting base 12 opposite to the bidirectional cylinder 15. The pre-tightening limiting block 14 includes a push block 30. A second limiting block 31 is integrally formed on one side of the push block 30. A slope adapted to the guide groove 29 is provided on the side of the push block 30 opposite to the second limiting block 31. Two oblong holes 32 are provided within the second limiting block 31. The waist-shaped hole 32 passes through and slides into the corresponding collar 27. The push block 30 and the second limiting block 31 have a common slope that matches one side of the double-sided wedge block 17 and are integrally formed with a connecting slider 33. The longitudinal section of the connecting slider 33 is T-shaped. The end of the second limiting block 31 away from the connecting slider 33 has a guide slope that matches the limiting groove 21 and passes through the corresponding protruding channel 25. The slopes on both sides of the double-sided wedge block 17 are provided with second sliding grooves 34 that match the connecting slider 33. The second sliding grooves 34 and the corresponding connecting slider 33 pass through each other and slide into each other. Finally, four bearing seats 35 are fixedly installed at the lower end of the middle fork 7 located on both sides of the fixed fork 6. One end of the diagonal brace 36 is rotatably connected to the corresponding bearing seat 35, and the other end is rotatably connected between the two corresponding rectangular sliders 13. Specifically, the control box 3 controls the front fork 8 to extend further outward along the middle fork 7 and insert into the lower end of the pallet. Simultaneously, the air compressor supplies air to the bidirectional cylinder 15, causing one piston rod 16 to extend and push the double-sided wedge 17 to move to both sides, while the other piston rod 16 retracts and pulls back the corresponding double-sided wedge 17. The second sliding groove 34 on both sides of the double-sided wedge 17 that is pushing out cooperates with the connecting slider 33 to push the two sets of pre-tightening limit blocks 14 to one side. Thus, the slope of the push block 30 abuts against the guide groove 29 of the rectangular slider 13, thereby restricting the rectangular slider 13 from moving within the mounting base 12. The inner side slides, thereby eliminating the assembly gap between the diagonal brace 36 and the rectangular slider 13, and between the rectangular slider 13 and the mounting base 12, and establishing a preload. At the same time, the guide slope at the end of the second limiting block 31 passes through the protruding channel 25 and inserts into the limiting groove 21 on the inner side of the slide beam 9, locking the U-shaped slide 11 in the slide beam 9, thereby preventing the downward pressure generated by the deflection of the middle fork 7 from pushing the U-shaped slide 11 to move within the slide beam 9, ensuring that the supporting force of the diagonal brace 36 on the lifting platform 5 does not fail. Then, the lifting machine 4 slightly lifts the front fork 8 to lift the pallet and silicon steel sheet away from the shelf support surface, and then retracts the front fork 8 and the middle fork in the reverse order of extension. 7. After the fork 8 retracts, its dual-acting cylinder 15 is activated again, causing the piston rod 16 that was pushing out to retract, and the piston rod 16 that was retracting to push out. Thus, the double-sided wedge 17 retracts the two sets of push blocks 30 and the second limiting block 31 on the adjacent sides, causing one end of the second limiting block 31 to be pulled out from the corresponding limiting groove 21 and contact the limiting position of the U-shaped slide 11. Simultaneously, another double-sided wedge 17 pushes the two sets of push blocks 30 and the second limiting block 31 on both sides to move towards the inner wall of the U-shaped slide 11, causing one end of the two second limiting blocks 31 to insert into the inner wall. The fork moves into the corresponding clearance groove 22, thus not affecting the sliding of the U-shaped slide block 11 in the slide beam 9. Then, the fork 7 retracts, takes the silicon steel sheet from the shelf and stores it in the lifting platform 5. Then, the upright 2 is controlled to move along the track 1 to the iron core stacking station. Generally, its delivery position is set relative to the shelf. Thus, the fork 7 and the front fork 8 move in opposite directions to the aforementioned picking action. The operation of the entire follower 10 can be switched in the reverse manner as described above. This reduces the deflection of the centrally connected fork 7 in the truck loading and unloading silicon steel sheets, preventing the silicon steel sheets stacked on the pallet from slipping due to tilting.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A stacking device for three-dimensional stacking of transformer cores, characterized in that: The system includes two tracks (1), with a vertical frame (2) slidably installed between the two tracks (1). A control box (3) is fixedly installed on one side of the vertical frame (2), and a hoist (4) is fixedly installed on the other side of the vertical frame (2). A lifting platform (5) is slidably installed inside the vertical frame (2). Two fixed forks (6) are symmetrically fixedly installed on the inner bottom surface of the lifting platform (5). A middle fork (7) is slidably installed on the fixed fork (6), and a front fork (8) is slidably installed on the middle fork (7). A slide beam (9) is fixedly installed on each side of the lifting platform (5) located on both sides of each fixed fork (6). A follower (10) is movably installed inside the slide beam (9). The follower (10) is movably connected to the lower end face of the corresponding middle fork (7) by multiple diagonal braces (36). The follower (10) includes... U-shaped slide (11), a plurality of mounting seats (12) are symmetrically fixedly installed inside the U-shaped slide (11), a rectangular slider (13) is slidably installed inside each mounting seat (12), a pre-tightening limit block (14) is movably installed between the mounting seat (12) and the rectangular slider (13), a two-way cylinder (15) is fixedly installed on the bottom surface of the U-shaped slide (11) located between the plurality of mounting seats (12), the two-way cylinder (15) is connected to the air compression equipment in the lifting platform (5) through an air pipe, two piston rods (16) are provided inside the two-way cylinder (15), and one end of each piston rod (16) extends away from the two-way cylinder (15) and is fixedly installed with a double-sided wedge (17), and the double-sided wedge (17) is movably connected to the two adjacent pre-tightening limit blocks (14).

2. The stacking device for three-dimensional stacking of transformer cores according to claim 1, characterized in that: Two fixed enclosure plates (18) are symmetrically fixedly installed on the outer side of the slide beam (9), and two supporting angle irons (19) are fixedly connected to the lower end face of the slide beam (9) of the fixed enclosure plates (18).

3. The stacking device for three-dimensional stacking of transformer cores according to claim 1, characterized in that: The slide beam (9) has two first slide grooves (20) on both sides. The slide beam (9) between the two first slide grooves (20) on the same side of the slide beam (9) also has a clearance groove (22). The slide beam (9) located on both sides of the clearance groove (22) has multiple limiting grooves (21). A drag chain (23) is fixedly installed on one side of the inner bottom surface of the slide beam (9).

4. The stacking device for three-dimensional stacking of transformer cores according to claim 3, characterized in that: Two slide rails (24) that are compatible with the first slide groove (20) are symmetrically fixedly installed on both sides of the U-shaped slide (11). The slide rails (24) are slidably installed in the corresponding first slide groove (20). The U-shaped slide (11) has protruding channels (25) on both sides near each mounting seat (12).

5. A stacking device for three-dimensional stacking of transformer cores according to claim 4, characterized in that: The mounting base (12) has a cavity adapted to the rectangular slider (13). The inner top and inner bottom surfaces of the mounting base (12) are provided with limiting slides (26). The upper and lower surfaces of the rectangular slider (13) are detachably fixed with first limiting blocks (28). The first limiting blocks (28) pass through and slide in the corresponding limiting slides (26). The rectangular slider (13) has a guide groove (29) on one side relative to the pre-tightening limiting block (14).

6. A stacking device for three-dimensional stacking of transformer cores according to claim 5, characterized in that: The mounting base (12) is rotatably mounted with a collar (27) on one side relative to the bidirectional cylinder (15).

7. A stacking device for three-dimensional stacking of transformer cores according to claim 6, characterized in that: The pre-tightening limiting block (14) includes a push block (30). A second limiting block (31) is integrally formed on one side of the push block (30). The side of the push block (30) opposite to the second limiting block (31) is provided with a slope that matches the guide groove (29). Two waist-shaped holes (32) are opened in the second limiting block (31). The waist-shaped holes (32) pass through and slide fit on the corresponding collar (27). The push block (30) and the second limiting block (31) are provided with a common slope that matches the side of the double-sided wedge (17) on the side opposite to the double-sided wedge (17) and are integrally formed with a connecting slider (33). The longitudinal section of the connecting slider (33) is T-shaped. The end of the second limiting block (31) away from the connecting slider (33) is provided with a guide slope that matches the limiting groove (21) and passes through the corresponding protrusion channel (25).

8. A stacking device for three-dimensional stacking of transformer cores according to claim 7, characterized in that: The slopes on both sides of the double-sided wedge (17) are provided with a second groove (34) that is compatible with the connecting slider (33). The second groove (34) and the corresponding connecting slider (33) are interlocked and slide together.

9. A stacking device for three-dimensional stacking of transformer cores according to claim 1, characterized in that: Four bearing seats (35) are fixedly installed at the lower end of the middle fork (7) located on both sides of the fixed fork (6), and one end of the diagonal brace (36) is rotatably connected to the corresponding bearing seat (35), while the other end is rotatably connected between the two corresponding rectangular sliders (13).

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