A steel piling device and method

Abstract

The application provides a profile steel stacking device and method, relates to the field of profile steel stacking, and aims to solve the problem of low profile steel stacking efficiency. The profile steel stacking device sets a supporting plate as an intermediate transition plate to temporarily bear single-layer profile steel, and controls the position of the single-layer profile steel in combination with a positioning pad, so that the single-layer profile steel can be stably and staggeredly stacked on the lower-layer profile steel after falling from the supporting plate, and the stacking efficiency and stability of the special-shaped profile steel are improved.

Description

Technical Field

[0001] This invention relates to the field of steel section stacking, and specifically to a steel section stacking device and method. Background Technology

[0002] After the steel profiles are formed, in order to reduce the space occupied and facilitate storage, transportation and packaging, the steel profiles need to be stacked. Two adjacent rows of steel profiles are fastened together to achieve multi-layer steel profile stacking.

[0003] In existing steel section stacking processes, some irregularly shaped steel sections require staggered arrangement. During hoisting or transport, the positions of the steel sections need to be adjusted to ensure that single-layer steel sections are spaced apart or closely packed. The gaps are used to accommodate the flanges of the upper layers, reducing the vertical height of the stack and increasing stability. However, this position adjustment process is cumbersome, and the relative positions of adjacent layers are prone to deviation, leading to stacking misalignment and hindering proper stacking. Directly accumulating the steel results in poor stacking stability, making it prone to tipping and scattering during transport, causing rework. Furthermore, the stacking efficiency of irregularly shaped steel sections is low, failing to meet the requirements for rapid and stable stacking. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies of existing technologies by providing a steel section stacking device and method. A pallet is set up as an intermediate transition plate to temporarily support the single layer of steel sections, and the position of the single layer of steel sections is controlled by adjusting pads. This facilitates the stable staggered stacking of the single layer of steel sections onto the lower layer of steel sections after they are dropped from the pallet, thereby improving the stacking efficiency and stability of irregular-shaped steel sections.

[0005] The first objective of this invention is to provide a steel section stacking device, which adopts the following solution:

[0006] It includes a positioning frame, a pallet, a claw, and a push rod. The pallet is mounted on the positioning frame via a reciprocating sliding pair. The claw is mounted on the positioning frame below the pallet, sequentially receiving and stacking the steel sections that are dropped from the pallet. The push rod is located on one side of the positioning frame and is arranged opposite to the pallet. The portion of the pallet extending to one side of the positioning frame forms a temporary bearing section to receive and support the steel sections pushed by the push rod. An adjustment pad is provided above the temporary bearing section, and the adjustment pad contacts and positions the steel sections.

[0007] Furthermore, the positioning frame forms a positioning surface on the side facing the push rod, and the portion of the support plate located on the positioning surface near the push rod serves as a temporary bearing portion. The length of the temporary bearing portion is changed by the support plate under the constraint of the reciprocating sliding joint.

[0008] Furthermore, the adjusting pads are provided in two sets. One set of adjusting pads is arranged at intervals with the positioning surface, and the other set of adjusting pads is attached to the positioning surface. The two sets of adjusting pads work in turn to make the stacked dissimilar steel sections staggered.

[0009] Furthermore, the claw is slidably mounted on the positioning frame, and the claw is connected to a lifting mechanism that drives the claw to move, so as to change the vertical distance between the claw and the pallet.

[0010] Furthermore, the top and bottom of the positioning frame are respectively connected to synchronous shafts, and multiple claws are respectively connected to synchronous chains. One end of the synchronous chain is connected to the claw, and the other end passes around the sprocket on the synchronous shaft at the top of the positioning frame and the sprocket on the synchronous shaft at the bottom of the positioning frame before connecting to the claw.

[0011] Furthermore, the push rod is mounted on a push rod carriage, which is mounted on a push rod bracket. The push rod carriage is connected to a push rod drive component to drive the push rod to reciprocate relative to the temporary support.

[0012] Furthermore, the reciprocating sliding pair includes a pallet trolley and a pallet bracket. The pallet trolley is mounted on the positioning frame via the pallet bracket, and the pallet trolley is connected to the pallet drive component.

[0013] Furthermore, the moving path of the push rod intersects with the conveying path of the first conveying mechanism, and a second conveying mechanism is provided below the claw, so that the top surface of the steel supported by the claw can fall below the conveying surface of the second conveying mechanism.

[0014] A second objective of this invention is to provide a stacking method using a steel section stacking device, comprising:

[0015] The pallet extends out of the positioning frame to form a temporary support section, and the push rod pushes the steel sections to be stacked from one end of the pallet to the temporary support section.

[0016] After the first steel section abuts against the side of the positioning frame, the adjustment pad is lowered, and the second steel section is pushed to abut against the adjustment pad, so that the two steel sections on the same layer are arranged at intervals.

[0017] The pallet retracts into the positioning frame to remove the temporary support section, and the steel section falls downward to the claw to form the first layer. The claw then descends one layer in height.

[0018] The pallet extends again to form a temporary support, the positioning pad is lowered, and the third and fourth parallel steel sections are pushed to make the steel sections in this layer spaced apart from the positioning frame.

[0019] The pallet retracts into the positioning frame to remove the temporary support section, and the steel section falls downward to the first layer to form the second layer. The steel sections of adjacent layers are staggered, and the claws descend one layer in height.

[0020] Repeat the above process to stack the steel sections in sequence.

[0021] Furthermore, a gap is maintained between the pallet and the claw to reserve a position for the steel sections on the pallet to be dropped, and one side of the stacked steel sections is attached to the positioning frame.

[0022] Compared with the prior art, the advantages and positive effects of this invention are:

[0023] (1) To address the current problem of low efficiency in steel section stacking, a pallet is set up as an intermediate transition plate to temporarily support the single-layer steel section, and the position of the single-layer steel section is controlled by the adjustment pad block, so that the single-layer steel section can be stably stacked on the lower layer steel section after being dropped from the pallet, thereby improving the stacking efficiency and stacking stability of irregular steel sections.

[0024] (2) The push rod and the pallet are arranged opposite to each other so that the movement path of the push rod corresponds to the temporary bearing part on the pallet. The push rod pushes the steel section to the temporary bearing part for position adjustment, matching the position when it is in different layers, so that the drop position of the upper layer steel section corresponds to the gap position of the lower layer steel section, thereby improving the stacking stability.

[0025] (3) The positioning frame serves as a support for the support claws and pallets, and the side serves as a positioning surface to assist in positioning the placement of the steel sections, so that multiple steel sections in a single layer can be in the required position. The shared reference surface improves the stacking accuracy. There is no need to configure photoelectric or other distance measuring elements. The positioning pads are used in conjunction with the positioning surface to achieve accurate positioning of the steel sections in the same layer.

[0026] (4) The positioning frame is connected to the synchronous shaft to synchronize the lifting and lowering actions of multiple claws, so that the steel sections in the same group can be lifted and lowered synchronously after being stacked, which facilitates the accurate receipt of the steel sections falling from the pallet and improves the stacking accuracy. Attached Figure Description

[0027] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0028] Figure 1 This is a schematic diagram of the docking and conveying mechanism of the steel stacking device in Embodiments 1 and 2 of the present invention.

[0029] Figure 2 The diagram shows the structure of the steel stacking device in Embodiments 1 and 2 of the present invention.

[0030] Figure 3 This is a schematic diagram of the lifting mechanism connected to the synchronous beam in embodiments 1 and 2 of the present invention.

[0031] Figure 4 This is a schematic diagram of the lifting mechanism connecting the claw in embodiments 1 and 2 of the present invention.

[0032] Figure 5 This is a schematic diagram of the reciprocating sliding pair connecting the pallet in Embodiments 1 and 2 of the present invention.

[0033] Figure 6This is a schematic diagram of the push rod, push rod carriage, and push rod bracket in Embodiments 1 and 2 of the present invention.

[0034] Figure 7 This is a schematic diagram of the push rod connecting to the push rod trolley in Embodiments 1 and 2 of the present invention.

[0035] The components include: 1. Positioning frame; 2. Pallet; 3. Claw; 4. Push rod; 5. Temporary bearing part; 6. Adjustment pad; 7. Positioning surface; 8. Lifting mechanism; 9. Synchronous shaft; 10. Synchronous chain; 11. Push rod trolley; 12. Push rod drive component; 13. Pallet trolley; 14. Pallet drive component; 15. First conveying mechanism; 16. Push rod bracket; 17. Pallet bracket; 18. Second conveying mechanism; 19. Multi-layer steel; 20. Synchronous beam. Detailed Implementation

[0036] Example 1

[0037] In a typical embodiment of the present invention, such as Figures 1-7 As shown, a steel section stacking device is presented.

[0038] During the stacking of structural steel sections, different stacking methods are used for structural steel sections with different end face shapes, such as... Figure 1 When the irregularly shaped steel sections are stacked to form multi-layer steel sections 19, the steel sections between adjacent layers need to be staggered to improve the stability after stacking, and facilitate transportation and subsequent bundling and flipping. However, at present, when stacking steel sections layer by layer, the positioning accuracy of the steel sections is low, which makes it easy for the position to shift when the materials are dropped and stacked, affecting the accuracy and efficiency of stacking.

[0039] Based on this, this embodiment provides a steel section stacking device. A temporary bearing part 5 is formed by a retractable pallet 2 structure to pre-position the single layer of steel sections to be stacked on the lower layer of steel sections. Combined with the positioning pad 6, the position of multiple steel sections in a single layer is controlled so that adjacent steel sections are arranged at intervals or the steel sections are arranged at intervals with the positioning frame 1. The posture of the steel sections matching the lower dropping position is obtained. After dropping, the steel sections can be stably and staggeredly stacked on the lower layer of steel sections to achieve accurate and stable stacking, thereby improving stacking efficiency and stability.

[0040] The steel stacking device in this embodiment will now be described in detail with reference to the accompanying drawings.

[0041] See Figure 1The steel section stacking device is based on a positioning frame 1, which is a frame structure that supports claws 3, pallets 2, and corresponding drive mechanisms. One side of the positioning frame 1 faces the upstream first conveying mechanism 15 that supplies steel sections. The pallet 2 is installed on the positioning frame 1 via a reciprocating sliding pair. Under the constraint of the reciprocating sliding pair, the pallet 2 can extend from one side of the positioning frame 1 to form a temporary bearing part 5, which carries the steel sections to be stacked. It can also be retracted from one side of the positioning frame 1 to remove the temporary bearing part 5 and drop the steel sections it carries, thus completing the stacking process. The claws 3 are arranged corresponding to the pallets 2 and carry the steel sections that drop from the temporary bearing part 5 of the pallets 2. After the multi-layer steel sections 19 are stacked, the claws 3 can drive the stacked steel sections to continue falling to the second conveying mechanism 18 for output, and then transport them to the downstream steel turning, binding, and bundling station.

[0042] A push rod 4 structure is provided, which is located on one side of the positioning frame 1. The push rod 4 and the pallet 2 are arranged opposite to each other. The push rod 4 can push the steel section on the first conveying mechanism 15 to the position of the pallet 2. The temporary bearing part 5 of the pallet 2 can bear multiple steel sections in a single layer during stacking. At the same time, an adjustment pad 6 is provided above the temporary bearing part 5. The adjustment pad 6 can be inserted between adjacent steel sections or between the steel section and the positioning frame 1. The position of the single layer of steel section on the pallet 2 can be changed by adjusting the adjustment pad 6, so that adjacent steel sections can be arranged at intervals or the steel section and the positioning frame 1 can be arranged at intervals.

[0043] The claw 3 is installed on the positioning frame 1 and located below the pallet 2. It sequentially receives the steel sections falling from the pallet 2. As the steel sections on the pallet 2 are dropped layer by layer, the claw 3 lowers its position layer by layer to reserve space for the steel sections to fall.

[0044] The positioning frame 1 serves as the mounting frame for the pallet 2 and the claw 3, and also as the positioning structure when stacking structural steel. The positioning frame 1 forms a positioning surface 7 on the side facing the push rod 4. The part of the pallet 2 that protrudes from the positioning surface 7 serves as a temporary bearing part 5. As the pallet 2 moves in and out of the positioning surface 7, the size of the temporary bearing part 5 can be changed, that is, the length along the extension and retraction direction of the pallet 2 can be changed. During the retraction process of the pallet 2, the positioning surface 7 abuts against the structural steel to restrict the structural steel from moving with the pallet 2, so that the pallet 2 is gradually pulled out from under the structural steel and the structural steel is dropped.

[0045] like Figure 2 As shown, the multi-layer steel sections 19 supported on the claw 3 are stacked in a staggered manner. Single-layer steel sections are sequentially dropped onto the claw 3 from above, and the relative positions of the single-layer steel sections on the temporary support section 5 are changed by setting adjustment pads 6. Figure 1As shown, two sets of adjusting pads 6 are provided. One set of adjusting pads 6 is arranged at intervals with the positioning surface 7. This set of adjusting pads 6 can be placed between multiple steel sections in the same layer to form gaps between adjacent steel sections, allowing the flange plates of the upper layer steel sections to penetrate into the gaps when the upper layer steel sections are unloaded. The other set of adjusting pads 6 is attached to the positioning surface 7, so that the pads supported on the support plate 2 can maintain a distance from the positioning surface 7, so that the outer flange plates of this layer of steel sections avoid the flange plates of the lower layer of steel sections when the steel sections of this layer are unloaded, and the inner flange plates of this layer of steel sections fall into the gaps of the lower layer of steel sections when the steel sections of this layer are unloaded.

[0046] It is understandable that the adjusting pad 6 is connected to an avoidance drive mechanism, which can drive the adjusting pad 6 to move to the avoidance position or to the working position; the two sets of adjusting pads 6 work in shifts so that the stacked steel sections can be staggered.

[0047] The avoidance drive mechanism can adopt a telescopic structure, such as a cylinder, hydraulic cylinder, or electric cylinder, or a rotary structure, such as an electric motor, pneumatic motor, or hydraulic motor. The avoidance drive mechanism can switch the connected adjusting pad 6 between the working position and the non-working position.

[0048] Of course, multiple positioning pads 6 can be set in the same group, arranged sequentially at intervals along the length of the steel section, to position the steel section from multiple positions and reduce the steel section offset problem during the positioning process. Multiple positioning pads 6 in the same group can be configured to move synchronously, that is, move to the working position or move to the non-working position at the same time, improving the efficiency of operation.

[0049] The adjusting pad 6 can be made of round steel, pad plate or other structures. It can be installed movably or fixedly on the output end of the avoidance drive mechanism by means of connecting parts such as pins. When the movable connection is used, various specifications of adjusting pad 6 can be configured. The adjusting pad 6 can be configured according to the size of the steel section so that the arrangement of the steel section in the same layer after positioning can meet the requirements of material dropping and stacking.

[0050] like Figure 3 As shown, the claw 3 is slidably installed on the positioning frame 1 and can be raised and lowered relative to the vertical of the positioning frame 1. To meet the load-bearing requirements of long steel, multiple claws 3 are configured to move synchronously. The claw 3 is connected to the lifting mechanism 8. The lifting mechanism 8 drives the claw 3 to achieve the lifting action, changing the relative position of the claw 3 and the pallet 2, and also changing the relative position of the claw 3 and the second conveying mechanism 18 connected to it.

[0051] The moving path of the claw 3 is determined according to the position of the pallet 2 and the position of the second conveying mechanism 18. When the claw 3 is at the top of the moving path, it can stably support the bottom layer of steel. When the claw 3 is at the bottom of the moving path, it can intersect with the conveying surface of the second conveying mechanism 18. The claw 3 can fall down until its top surface is below the conveying surface of the second conveying mechanism 18, so as to transfer the stacked multi-layer steel 19 from the claw 3 to the conveying surface of the second conveying mechanism 18.

[0052] Combination Figure 3 and Figure 4 The top and bottom of the positioning frame 1 are respectively connected to the synchronous shaft 9, and multiple claws 3 are respectively connected to the synchronous chain 10. One end of the synchronous chain 10 is connected to the claw 3, and the other end passes around the sprocket on the synchronous shaft 9 at the top of the positioning frame 1 and the sprocket on the synchronous shaft 9 at the bottom of the positioning frame 1 before connecting to the claw 3.

[0053] Meanwhile, the claws 3 are installed on the synchronous beam 20, so that multiple claws 3 keep moving synchronously. The two ends of the synchronous beam 20 are connected to the positioning frame 1 through the sliding pair. The output end of the lifting mechanism 8 can be connected to the synchronous beam 20. The synchronous beam 20 drives multiple claws 3 to move simultaneously. Combined with the synchronous shaft 9, synchronous sprocket and synchronous chain 10, multiple claws 3 carrying the same group of steel sections can keep running synchronously.

[0054] like Figure 6 , Figure 7 As shown, push rod 4 is mounted on push rod carriage 11, and push rod carriage 11 is mounted on push rod bracket 16. Push rod bracket 16 supports and constrains the movement of push rod carriage 11. Push rod carriage 11 is connected to push rod drive component 12 to drive push rod 4 to reciprocate relative to temporary support part 5.

[0055] In this embodiment, the push rod bracket 16 uses two channel steels as guide rails. The pulleys on both sides of the push rod trolley 11 cooperate with the guide rails formed by the channel steels, so that the push rod trolley 11 moves along the guide rails. While the push rod trolley 11 moves, it can drive the push rod 4 to move. The movement trajectory of the push rod 4 intersects with the movement trajectory of the steel section on the first conveying mechanism 15, pushing the steel section to move towards the pallet 2.

[0056] The push rod drive component 12 adopts a combination of a drive rod and a telescopic component, such as... Figure 1 As shown, one end of the drive rod is connected to the push rod carriage 11 via a connecting rod, and the other end is hinged to the support. The telescopic component is connected to the middle of the drive rod, forming a lever structure with the support as the fulcrum. The telescopic component drives the drive rod to swing through its telescopic movement, thereby driving the push rod carriage 11 to move back and forth along the guide rail via the connecting rod, completing the push and pull-back actions.

[0057] The telescopic component can be made of components such as cylinders or electric cylinders, and is hinged to an external fixed structure via a bracket. The output end is hinged to the drive rod via a pin.

[0058] The push rod 4 can also be installed on the push rod carriage 11 by means of a spring or other buffer, so that the push rod 4 can move within a small range relative to the carriage. When the push rod 4 pushes the steel section, the buffer absorbs part of the impact and protects the steel section. Of course, the push rod 4 and the corresponding drive rod and push rod carriage 11 can be configured in multiple ways, arranged at intervals and moving synchronously to push the steel section from multiple points.

[0059] like Figure 5 As shown, the reciprocating sliding pair includes a pallet trolley 13 and a pallet bracket 17. The pallet trolley 13 is mounted on the positioning frame 1 via the pallet bracket 17, and the pallet trolley 13 is connected to the pallet drive component 14. In this embodiment, the pallet bracket 17 uses two channel steels as guide rails. The pulleys on both sides of the pallet trolley 13 cooperate with the guide rails formed by the channel steels, allowing the pallet trolley 13 to move along the guide rails. While the pallet trolley 13 is moving, it can drive the pallet 2 to move. The moving trajectory of the pallet 2 intersects with the positioning surface 7, allowing the pallet 2 to extend out of the positioning surface 7 to form a temporary bearing part 5, and also allowing the pallet 2 to retract back to the positioning surface 7 to allow the steel section it carries to be unloaded.

[0060] The pallet drive component 14 adopts a telescopic component combination, such as... Figure 5 As shown, one end of the drive rod is connected to the pallet trolley 13, and the other end is hinged to the positioning frame 1. The telescopic component drives the pallet trolley 13 to move back and forth along the guide rail through the telescopic action, thereby driving the pallet 2 to complete the push-out and pull-back actions.

[0061] The moving path of push rod 4 intersects with the conveying path of the first conveying mechanism 15, so that push rod 4 can act on the steel section on the first conveying mechanism 15. A second conveying mechanism 18 is provided below the claw 3. The top surface of the claw 3 that supports the steel section can fall below the conveying surface of the second conveying mechanism 18, so that the claw 3 can transfer the stacked multi-layer steel section 19 to the second conveying mechanism 18. Both the first conveying mechanism 15 and the second conveying mechanism 18 can be conveying rollers.

[0062] Example 2

[0063] In another typical embodiment of the present invention, such as Figures 1-7 As shown, a stacking method for a steel section stacking device is presented.

[0064] The steel section stacking device as described in Example 1 includes:

[0065] The pallet 2 extends out of the positioning frame 1 to form a temporary support part 5, and the push rod 4 pushes the steel to be stacked from one end of the pallet 2 onto the temporary support part 5;

[0066] After the first steel section abuts against the side of the positioning frame 1, the adjustment pad 6 is lowered and the second steel section is pushed to abut against the adjustment pad 6, so that the two steel sections on the same layer are arranged at intervals.

[0067] The pallet 2 retracts into the positioning frame 1, the temporary support part 5 is removed, the steel section falls downward to the claw 3 to form the first layer, and the claw 3 descends one layer height;

[0068] The pallet 2 extends again to form a temporary support part 5, the adjustment pad 6 is lowered, and the third and fourth parallel steel sections are pushed to make the steel sections in this layer and the positioning frame 1 arranged at intervals.

[0069] The pallet 2 retracts into the positioning frame 1, the temporary bearing part 5 is removed, the steel section falls downward to the first layer to form the second layer, the steel sections of adjacent layers are staggered, and the claw 3 descends one layer height;

[0070] Repeat the above process to stack the steel sections in sequence.

[0071] It is understandable that a gap is maintained between the pallet 2 and the claw 3 to reserve a position for the steel section on the pallet 2 to be dropped, and the side of the stacked steel section is attached to the positioning frame 1.

[0072] In other embodiments, more adjusting pads 6 can be configured as needed to separate the steel sections in the same layer or adjust the relative position of the steel sections in the same layer and the positioning surface 7. They can be selected and replaced according to the required stacking method.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A steel section stacking device, characterized in that, It includes a positioning frame, a pallet, a claw, and a push rod. The pallet is mounted on the positioning frame via a reciprocating sliding joint. The claw is mounted on the positioning frame below the pallet, sequentially receiving and stacking the steel sections that are dropped from the pallet. The push rod is located on one side of the positioning frame and is arranged opposite to the pallet. The portion of the pallet extending to one side of the positioning frame forms a temporary bearing section to receive and support the steel sections pushed by the push rod. An adjustment pad is provided above the temporary bearing section, and the adjustment pad contacts and positions the steel sections. The adjusting pads are provided in two sets. One set of adjusting pads is arranged at intervals with the positioning surface, and the other set of adjusting pads is attached to the positioning surface. The two sets of adjusting pads work in turn to make the stacked dissimilar steel sections staggered. The claw is slidably mounted on the positioning frame, and the claw is connected to a lifting mechanism that drives the claw to move, so as to change the vertical distance between the claw and the support plate. The positioning frame is connected to a synchronous shaft at the top and bottom, and multiple claws are connected to synchronous chains. One end of the synchronous chain is connected to the claw, and the other end passes around the sprocket on the synchronous shaft at the top of the positioning frame and the sprocket on the synchronous shaft at the bottom of the positioning frame before connecting to the claw.

2. The steel section stacking device as described in claim 1, characterized in that, The positioning frame forms a positioning surface on the side facing the push rod. The portion of the support plate located on the positioning surface near the push rod serves as a temporary bearing part. The length of the temporary bearing part is changed by the support plate under the constraint of the reciprocating sliding joint.

3. The steel section stacking device as described in claim 1, characterized in that, The push rod is mounted on the push rod carriage, which is mounted on the push rod bracket. The push rod carriage is connected to the push rod drive component to drive the push rod to reciprocate relative to the temporary support.

4. The steel section stacking device as described in claim 1, characterized in that, The reciprocating sliding pair includes a pallet trolley and a pallet bracket. The pallet trolley is mounted on the positioning frame via the pallet bracket, and the pallet trolley is connected to the pallet drive component.

5. The steel section stacking device as described in claim 1, characterized in that, The moving path of the push rod intersects with the conveying path of the first conveying mechanism. A second conveying mechanism is provided below the claw, and the top surface of the steel supported by the claw can fall below the conveying surface of the second conveying mechanism.

6. A stacking method using the steel section stacking device as described in any one of claims 1-5, characterized in that, include: The pallet extends out of the positioning frame to form a temporary support section, and the push rod pushes the steel sections to be stacked from one end of the pallet to the temporary support section. After the first steel section abuts against the side of the positioning frame, the adjustment pad is lowered, and the second steel section is pushed to abut against the adjustment pad, so that the two steel sections on the same layer are arranged at intervals. The pallet retracts into the positioning frame to remove the temporary support section, and the steel section falls downward to the claw to form the first layer. The claw then descends one layer in height. The pallet extends again to form a temporary support, the positioning pad is lowered, and the third and fourth parallel steel sections are pushed to make the steel sections in this layer spaced apart from the positioning frame. The pallet retracts into the positioning frame to remove the temporary support section, and the steel section falls downward to the first layer to form the second layer. The steel sections of adjacent layers are staggered, and the claws descend one layer in height. Repeat the above process to stack the steel sections in sequence.

7. The palletizing method as described in claim 6, characterized in that, Maintain a gap between the pallet and the claw, leaving space for the steel sections on the pallet to fall off, and attach one side of the stacked steel sections to the positioning frame.

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