Roller conveyor for conveying stacks of profiled steel and method of conveying

Abstract

The application provides a roller conveyor device and a conveying method for conveying a pile of profile steel, and belongs to the technical field of pile conveying. The roller conveyor device comprises a transverse trolley moving along a track and an output roller conveyor. One end of the track is located below a lifting stacking table on the ground, the track extends to the opposite side of the lifting stacking table to the axis of the conveying roller conveyor, and the track is perpendicular to the conveying direction of the roller conveyor. The transverse trolley can move along the track, and the transverse trolley comprises two track surface roller conveyors which are perpendicular to the track. The height of the track surface roller conveyors is the same as that of the output roller conveyor. Each roller of the track surface roller conveyors is spaced apart from the upper surface of the trolley below by a set height, so that the lifting stacking table can be lowered below the height of the rollers when the lifting stacking table is lowered. No roller is arranged at the position on the axis of the conveying roller conveyor which coincides with the transverse trolley. The transverse trolley does not have a lifting function, so that the lifting shaft of the transverse trolley can be cancelled. Therefore, the output roller conveyor does not need to be arranged as a cantilever roller conveyor, and the problem of safety hazards caused by the deformation and inclination of the cantilever is eliminated.

Description

Technical Field

[0001] This invention belongs to the field of stacking and conveying technology, and relates to a roller conveyor device and conveying method for conveying stacks of steel. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] At the rear of the steel production workshop, the produced steel sections are stacked layer by layer into bundles by a palletizer and a lifting palletizer. The bundles are then transported to the output roller conveyor and sent downstream for further bundling.

[0004] A lifting trolley is typically used to move bundles of structural steel between the lifting palletizing platform and the output roller conveyor. After the palletizing process is complete, the lifting palletizing platform is filled with bundles of structural steel, and then lowers to its lowest position. The lifting trolley then moves to a position below the lifting palletizing platform, raises its platform, and pushes the bundles of structural steel away from the platform. The lifting trolley, carrying the bundles of structural steel, moves to a position above the output roller conveyor, lowers its platform below the conveyor, and places the bundles onto the conveyor. The output roller conveyor then rotates, transporting the bundles of structural steel downstream.

[0005] However, in order for the lifting trolley platform to rise and fall between the gaps of the multiple rollers on the output roller conveyor, the platform must also be designed as a combination of multiple strip-shaped platforms parallel to the roller conveyor. The lifting function of the lifting trolley platform is achieved by a hydraulic cylinder driving a long shaft. When the lifting trolley moves laterally to transport the steel bundles to above the output roller conveyor, this long shaft needs to be located below the rollers of the output roller conveyor. This causes the rollers on the side of the output roller conveyor closest to the trolley to need to make way, requiring a cantilever roller conveyor design. After long-term service, the cantilever can easily tilt due to deformation, affecting the normal transportation of the steel bundles and even creating safety hazards. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a roller conveyor device and method for conveying steel bundles, which can transport steel bundles to the bundle output roller conveyor without the need for cantilever roller conveyors, and smoothly transport them to the downstream.

[0007] To achieve the above objectives, a first aspect of the present invention provides a roller conveyor for conveying bundles of steel, comprising: a transverse trolley that moves along a track and an output roller conveyor.

[0008] One end of the track is located on the ground below the lifting and stacking platform, and the track passes through the output roller conveyor perpendicular to the roller conveyor direction;

[0009] The transverse trolley can move along the track. The platform of the transverse trolley includes two platform roller tracks with the conveying direction perpendicular to the track. Each roller of the platform roller track is at a set height from the upper surface of the trolley below it, so that the lifting and stacking platform can be lowered below the height of the rollers.

[0010] Optionally, the table roller conveyor is divided into table roller conveyor one and table roller conveyor two. The roller specifications of table roller conveyor one and table roller conveyor two are the same, and the spacing between each roller in the roller conveyor is the same.

[0011] Optionally, the position of the transverse trolley on the track includes a first position and a second position; in the first position, the first table roller is located at the lifting and stacking platform position, and the second table roller is aligned with the output roller; in the second position, the first table roller is aligned with the output roller, and the second table roller is located on the opposite side of the lifting and stacking platform of the output roller.

[0012] Optionally, on the output roller conveyor, no rollers are installed in the area where the traverse trolley moves, and there are fixed rollers as intervals between adjacent areas where the traverse trolleys move.

[0013] Optionally, the height of the table roller conveyor is the same as that of the output roller conveyor.

[0014] Optionally, one output roller conveyor corresponds to one or more lifting and palletizing platforms, and each lifting and palletizing platform corresponds to one transverse trolley.

[0015] A second aspect of the present invention provides a method for conveying steel stacks using the above-described roller conveyor device.

[0016] S1. When the lifting and stacking platform is in the process of stacking steel bundles, the transverse trolley is in the first position, the platform roller conveyor two is aligned with the output roller conveyor, and the platform roller conveyor two conveys the steel bundles being transported on the output roller conveyor downstream.

[0017] S2. After the lifting and stacking platform completes the stacking of steel sections, the lifting and stacking platform is lowered to the low position, and the steel sections are transferred to the platform roller conveyor of the transverse trolley.

[0018] S3. The transverse trolley moves along the track to the second position, and the first platform roller conveyor is aligned with the output roller conveyor. The first platform roller conveyor transports the steel bundles being transported on the output roller conveyor downstream. The second platform roller conveyor does not participate in the transport of the steel bundles.

[0019] S4. When the steel bundles on the roller conveyor of the transverse trolley leave the transverse trolley, and the lifting and stacking platform needs to move the newly stacked steel bundles onto the transverse trolley, the transverse trolley moves along the track to the first position, and the roller conveyor is in state S1, repeating the cycle to S4.

[0020] Optionally, in S1, the rollers of the second table roller conveyor rotate at the same speed as the rollers of the output roller conveyor, while the rollers of the first table roller conveyor do not rotate.

[0021] Optionally, in S3, the rollers of table roller conveyor one rotate at the same speed as the rollers of the output roller conveyor, while the rollers of table roller conveyor two do not rotate.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The platform of the transverse trolley of the present invention includes two platform roller tracks with the conveying direction perpendicular to the track. The height of the platform roller tracks is the same as that of the output roller track. The transverse trolley does not have a lifting function, that is, it can transfer the steel bundles to the bundle output roller track; therefore, the lifting shaft of the transverse lifting trolley can be eliminated; thus, the output roller track does not need to be set as a cantilever roller track, eliminating the problem that the cantilever is prone to deformation and tilting, which may cause safety hazards.

[0024] 2. The transverse trolley of the present invention has roller conveyors at both the first and second positions of the track to participate in the conveying of the steel bundles on the output roller conveyor. The degree of mutual interference between multiple palletizing production lines when the bundles are output is small, which improves production efficiency.

[0025] 3. The transverse transfer trolley equipment of the present invention has a simple structure, safe and reliable operation, and convenient maintenance. Based on existing technology, it can realize the control of the rotation of each roller, and realize the automation of the entire stacking and bundling output process, thereby improving labor productivity. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the structure of a roller conveyor device in the background art, in state one.

[0028] Figure 2 This is a schematic diagram of the second state structure of the roller conveyor device in the background technology.

[0029] Figure 3 This is a schematic diagram of the three states of a roller conveyor device in the background art.

[0030] Figure 4 This is a schematic diagram of the structure at the first position in a specific implementation.

[0031] Figure 5 This is a schematic diagram of the structure at the second position in a specific implementation.

[0032] Figure 6 This is a schematic diagram of the structure of multiple lifting and stacking platforms along a single conveyor roller axis in a specific implementation.

[0033] In each figure, (a) is the front view and (b) is the top view.

[0034] Among them, 1. Lifting and stacking platform; 2. Lifting trolley; 21. Long shaft; 3. Output roller conveyor; 4. Steel section bundle; 5. Transverse trolley; 51. Platform roller conveyor two; 52. Platform roller conveyor one; 6. Track; 7. Rollers in fixed positions; 8. Conveying roller conveyor axis. Detailed Implementation

[0035] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] Roller conveyor devices in the background art, such as Figures 1-3 As shown.

[0038] The tool used to move the steel stacks 4 between the lifting palletizing platform 1 and the output roller conveyor 3 is a lifting trolley; such as Figure 1 As shown in (a), after the palletizing process is completed, the steel bundles 4 are stacked on the lifting palletizing platform 1, and the lifting trolley 2 moves to below the lifting palletizing platform 1; the platform of the lifting trolley 2 rises, as shown in (a). Figure 1 As shown in (b), the lifting trolley 2 pushes the steel stack bundle 4 away from the lifting stack platform 1 through the gap of the lifting stack platform 1; the lifting stack platform 1 needs to have a lifting function but does not need to rotate, so it can be strengthened by using triangular reinforcing plates.

[0039] like Figure 2 As shown in (a), the lifting trolley 2 loads the steel stack bundle 4, as... Figure 2 As shown in (b), the lifting trolley 2 is transported in the direction of the output roller conveyor 3.

[0040] like Figure 3 As shown in (a), the lifting trolley 2, carrying the bundle of steel sections 4, moves above the output roller conveyor 3 and raises the platform of the lifting trolley. Figure 3As shown in (b), the platform of the lifting trolley 2 is inserted into the gap between the rollers of the output roller conveyor 3. The platform of the lifting trolley 2 is lowered below the output roller conveyor 3, and the steel bundle 4 is placed on the output roller conveyor 3. The output roller conveyor 3 rotates and transports the steel bundle downstream.

[0041] Because the platform of the lifting trolley 2 needs to be able to push out of the gap in the lifting and palletizing platform 1, and needs to be able to rise and fall between the gaps of multiple rollers in the output roller conveyor 3, the platform must also be designed as a combination of multiple strip-shaped platforms parallel to the rollers. For example... Figure 2 As shown in (a), the lifting function of the platform of the lifting trolley 2 is achieved by a hydraulic cylinder driving a long shaft 21. This long shaft 21 needs to connect all the strip platforms of the lifting trolley 2 to ensure that all the strip platforms are raised and lowered at the same time to prevent the steel stack bundle 4 from tipping over.

[0042] like Figure 3 As shown in (a), when the lifting trolley 2 transports the steel bundle 4 to the top of the output roller conveyor 3, the long shaft 21 is located directly below the rollers of the output roller conveyor 3. This causes the rollers of the output roller conveyor 3 to need to make way on the side closest to the trolley, and can only be designed as a cantilever roller conveyor, which cannot provide effective support. In addition, the rollers need to rotate, and the mechanical structure of the cantilever roller conveyor is complex. Even if the strength of the reinforcing plate is increased, after a long period of service, the unsupported end of the cantilever is prone to downward deformation and tilting, which affects the normal transport of the steel bundle 4 and may even create safety hazards.

[0043] The roller conveyor device in this embodiment is as follows: Figures 4-5 As shown.

[0044] like Figure 4 As shown, the roller conveyor device for conveying the steel bundles 4 includes: a transverse trolley 5 that moves along the track 6 and an output roller conveyor 3; one end of the track 6 is located on the ground below the lifting and stacking platform 1, the track 6 passes through the output roller conveyor 3 perpendicular to the conveying direction of the roller conveyor, and extends to the opposite side of the lifting and stacking platform 1 on the axis 8 of the conveying roller conveyor; the transverse trolley 5 can move along the track 6, and the platform of the transverse trolley 5 includes two platform roller conveyors with conveying directions perpendicular to the track 6. The height of the platform roller conveyors is the same as that of the output roller conveyor 3. Each platform roller conveyor includes multiple rollers, and each roller of the platform roller conveyor is at a set height from the upper surface of the trolley below it (instead of being recessed into the surface of the transverse trolley 5, otherwise the lifting and stacking platform 1 cannot be lowered below the height of the rollers), so that when the lifting and stacking platform 1 is lowered, it can be lowered below the height of the rollers, so that the steel bundles 4 can be smoothly transferred from the lifting and stacking platform 1 to the platform roller conveyor.

[0045] Then the transverse trolley 5 does not need to be raised or lowered, and can become part of the output roller conveyor 3 and participate in the transportation of the steel stack bundle 4 when the axis of the table roller conveyor and the conveyor roller conveyor 8 are aligned.

[0046] In the direction of the conveyor roller axis 8, no rollers are installed at the position that coincides with the transverse trolley 5 to make way for the transverse trolley 5. There are fixed rollers 7 as intervals between the moving areas of adjacent transverse trolleys 5.

[0047] Since the transverse trolley 5 does not need to be lifted, it can bear a large weight with a simple mechanical structure and participate in the transportation of steel stack bundles 4 as part of the output roller conveyor 3 for a long time.

[0048] The table roller conveyor includes table roller conveyor 1 52 and table roller conveyor 2 51. The rollers of table roller conveyor 1 52 and table roller conveyor 2 51 have the same specifications and the same roller distribution position. Both table roller conveyor 1 52 and table roller conveyor 2 51 can be used as part of the output roller conveyor 3 to transport the steel stack bundles 4.

[0049] The position of the transverse trolley 5 on the track 6 includes a first position and a second position: in the first position, such as... Figure 4 As shown in (a), the first platform roller conveyor 52 is located at the position of the lifting and stacking platform 1, and the second platform roller conveyor 51 is aligned with the axis 8 of the conveyor roller conveyor; in the second position, as Figure 5 As shown in (a), the first platform roller conveyor 52 is aligned with the axis of the conveyor roller conveyor 8, and the second platform roller conveyor 51 is located on the opposite side of the lifting and stacking platform 1 on the axis of the conveyor roller conveyor 8. Regardless of whether the transverse trolley 5 is in the first position or the second position, the platform roller conveyor participates in the transportation of the output roller conveyor 3, so the output roller conveyor 3 will not be interrupted and will continue to transport the steel stack bundle 4.

[0050] Optionally, the transverse trolley 5 includes a base plate with rollers installed underneath. The rollers cooperate with the track 6 to drive the transverse trolley 5 to move along the track 6. The base plate is equipped with a first table roller conveyor 52 and a second table roller conveyor 51, each of which includes multiple rollers.

[0051] Optionally, the rollers of the transverse trolley 5 are driven by the control system, which can adjust the position of the transverse trolley 5 on the track 6.

[0052] Optionally, the rollers of the first and second table rollers of the transverse trolley 5 are driven by a drive device and can rotate or stop.

[0053] Optional, such as Figure 6 As shown, one conveyor roller axis 8 corresponds to one or more lifting and stacking platforms 1, and each lifting and stacking platform 1 corresponds to a transverse trolley 5.

[0054] The conveying method for the steel stacks 4 of the above roller conveyor device is as follows.

[0055] S1, such as Figure 4As shown in (b), when the lifting and stacking platform 1 is stacking the steel bundles 4, the transverse trolley 5 is in the first position, and the platform roller conveyor 51 is aligned with the axis 8 of the conveyor roller conveyor. Figure 4 As shown in (b), the table roller conveyor 51 can transport the steel bundles 4 being transported on the output roller conveyor 3 downstream.

[0056] S2. After the lifting and stacking platform 1 completes the stacking of the steel bundles, the lifting and stacking platform 1 is lowered to a low position. Correspondingly, the rollers of the platform roller conveyor 52 of the transverse trolley 5 are pushed out from the gap of the lifting and stacking platform 1, and the steel bundles 4 of the lifting and stacking platform 1 are transferred to the platform roller conveyor 52.

[0057] S3, the transverse trolley 5 moves along track 6 to the second position, such as Figure 5 As shown in (b), the platform roller conveyor 52 is aligned with the axis of the conveyor roller conveyor 8. The platform roller conveyor 52 conveys the steel bundle 4 transferred from the lifting and stacking platform 1 in S2 downstream. The platform roller conveyor 51 does not participate in the conveying of the steel bundle 4.

[0058] S4. When the steel bundle 4 on the roller conveyor 52 of the transverse trolley 5 leaves the transverse trolley 5, and the lifting and stacking platform 1 needs to move the newly stacked steel bundle 4 onto the transverse trolley 5, the transverse trolley 5 moves along the track 6 to the first position, and the roller conveyor is in state S1. The cycle repeats until S4.

[0059] Optionally, in S1, the rotation speed of the rollers on the second table roller conveyor 51 is the same as the rotation speed of the rollers on the fixed position of the output roller conveyor 3, while the rollers on the first table roller conveyor 52 do not rotate.

[0060] Optionally, in S3, the rotation speed of the rollers on the first table roller conveyor 52 is the same as the rotation speed of the roller 7 at the fixed position on the output roller conveyor 3, while the rollers on the second table roller conveyor 51 do not rotate.

[0061] Regardless of whether the transverse trolley 5 is in the first or second position, the table roller conveyor participates in the transport of the output roller conveyor 3, so the output roller conveyor 3 will not be interrupted and will continue to transport the steel bundles 4. By reasonably designing the number of corresponding lifting and palletizing platforms 1 on a conveyor roller conveyor axis 8, and coordinating with an appropriate production rhythm, the degree of mutual interference between multiple palletizing workstations during the output of bundles can be minimized, thereby improving production efficiency.

[0062] 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 roller conveyor device for conveying bundles of steel, characterized in that, include: A transverse trolley and an output roller conveyor that move along a track; One end of the track is located on the ground below the lifting and stacking platform, and the track passes through the output roller conveyor perpendicular to the roller conveyor direction; The transverse trolley can move along the track. The platform of the transverse trolley includes two platform roller tracks with the conveying direction perpendicular to the track. Each roller of the platform roller track is at a set height from the upper surface of the trolley below it, so that the lifting and stacking platform can be lowered below the height of the rollers. The traverse trolley does not have a lifting function; The traverse trolley includes a base plate with rollers installed underneath. The rollers cooperate with the track to drive the traverse trolley to move along the track. The rollers of the traverse trolley are driven by the control system, which can adjust the position of the traverse trolley on the track. The table roller conveyor is divided into table roller conveyor one and table roller conveyor two. The rollers of table roller conveyor one and table roller conveyor two have the same specifications and the same spacing between the rollers in the roller conveyor. The position of the transverse trolley on the track includes a first position and a second position. In the first position, table roller conveyor one is located at the lifting and stacking platform position, and table roller conveyor two is aligned with the output roller conveyor. In the second position, table roller conveyor one is aligned with the output roller conveyor, and table roller conveyor two is located on the opposite side of the lifting and stacking platform of the output roller conveyor. Table roller conveyor one and table roller conveyor two are installed on the base plate. On the output roller conveyor, no rollers are installed in the area where the traverse trolley moves. There are fixed rollers as intervals between the areas where adjacent traverse trolleys move. The height of the table roller conveyor is the same as that of the output roller conveyor. Regardless of whether the transverse trolley is in the first or second position, the table roller conveyor participates in the transport of the output roller conveyor, so the output roller conveyor will not be interrupted and will continue to transport the steel stack bundles.

2. The roller conveyor device for conveying bundles of steel as described in claim 1, characterized in that, The first and second table roller conveyors each include multiple rollers.

3. The roller conveyor device for conveying bundles of steel as described in claim 1, characterized in that, The rollers of the transverse trolley's platform rollers one and two are driven by a drive device and can rotate or stop.

4. The roller conveyor device for conveying bundles of steel as described in claim 1, characterized in that, One conveyor roller axis corresponds to one or more lifting and stacking platforms, and each lifting and stacking platform corresponds to a transverse trolley.

5. A method for conveying steel bundles using a roller conveyor device for conveying steel bundles as described in any one of claims 1-4, characterized in that, The steps include the following: S1. When the lifting and stacking platform is stacking steel bundles, the transverse trolley is in the first position, the platform roller conveyor two is aligned with the output roller conveyor, and the platform roller conveyor two conveys the steel bundles being transported on the output roller conveyor downstream. S2. After the lifting and stacking platform completes the stacking of steel sections, the lifting and stacking platform is lowered to the low position, and the steel sections are transferred to the table roller conveyor of the transverse trolley. S3. The transverse trolley moves along the track to the second position, and the first platform roller conveyor is aligned with the output roller conveyor. The first platform roller conveyor transports the steel bundles being transported on the output roller conveyor downstream. The second platform roller conveyor does not participate in the transport of the steel bundles. S4. When the steel bundles on the roller conveyor of the transverse trolley leave the transverse trolley, and the lifting and stacking platform needs to move the newly stacked steel bundles onto the transverse trolley, the transverse trolley moves along the track to the first position, and the roller conveyor is in state S1. In S1, the rotation speed of the rollers on the second table roller conveyor is the same as that of the rollers on the output roller conveyor, while the rollers on the first table roller conveyor do not rotate. In S3, the rollers of table roller conveyor one rotate at the same speed as the rollers of the output roller conveyor, while the rollers of table roller conveyor two do not rotate.

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