Lightweight cross arm assembly

Abstract

The utility model discloses a lightweight cross arm assembly, and belongs to the technical field of steel billet transportation protection. The protective device comprises a plurality of protective frames which are distributed at intervals, and the adjacent protective frames are connected through H-shaped steel. The upper flange and the lower flange of the H-shaped steel are welded to the side faces of the corresponding protection frames. The protection frame is formed by integrally cutting a steel plate, a groove is formed in the protection frame, and the groove and the top of the upper flange of the H-shaped steel jointly define a containing space used for containing steel billets to be transported. According to the light-weight cross arm assembly, the H-shaped steel is adopted to replace a traditional square billet cross arm, the steel plate is adopted to replace a square billet stand column, the self weight of the cross arm assembly is greatly reduced, and therefore the actual bearing capacity of a vehicle can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel billet transportation protection, and more specifically relates to a lightweight cross arm assembly. Background Art

[0002] Currently, domestic steel mills generally use semi-trailers to transport special steel round billets, square billets, and casting residues. However, these purchased vehicles typically only have a tractor and a bare trailer, making them inadequate for the specialized logistics needs of steel industry bases. Therefore, these purchased vehicles often require secondary development to accommodate the transport of billets of varying specifications and temperatures. The addition of columns to prevent billets from slipping during transport is a fundamental requirement for this development.

[0003] Traditional protective structures utilize billets as protective posts welded directly to the semi-trailer side beams. However, since side beams are not designed to withstand high impact forces, the welds are located at locations susceptible to debonding and breakage after frequent impact, increasing transportation risks. Furthermore, damage to the posts can damage the entire vehicle body. A new crossarm-and-post design has emerged. This structure welds the billets (billets) to each end of the crossarm (billet), using the space between the two to restrain the billets and prevent them from falling. This design offers improved connection strength compared to the traditional single-post design. However, this also results in a higher weight for the entire protective structure, reducing the vehicle's actual load capacity and increasing transportation costs. Therefore, designing a lightweight crossarm assembly to increase the vehicle's actual load capacity is of great practical significance.

[0004] A search revealed a billet hot transport vehicle device disclosed in patent CN112319651A. This application, by incorporating an auxiliary wheel unit, can maintain uniform force during billet loading even when the vehicle body is lengthened and modified, preventing the vehicle from tilting, effectively ensuring transportation safety and enabling the use of conventional transport vehicles in the industry to transport billets, adapting to the factory's smaller operating environment. Furthermore, this application utilizes a base plate plus columns to prevent billets from slipping during transportation, and reinforced plates are provided on the outer sides of the vertical plates to ensure the connection strength of the vertical plates. However, the entire protective device still has a high deadweight, which is not conducive to saving transportation costs. Utility Model Content

[0005] 1. Problems to be solved

[0006] In response to at least some of the problems existing in the above-mentioned prior art, the present invention proposes a lightweight crossarm assembly, the purpose of which is to solve the problem that the existing steel billet protection device has a large dead weight, resulting in a reduction in the actual carrying capacity of the vehicle, thereby increasing transportation costs.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0009] The utility model discloses a lightweight cross arm assembly, comprising a plurality of protective frames distributed at intervals, wherein adjacent protective frames are connected by H-shaped steel;

[0010] The upper and lower flanges of the H-shaped steel are welded to the sides of the corresponding protective frame;

[0011] The protective frame is provided with a groove, and the groove and the top of the upper flange of the H-shaped steel together form a receiving space for placing the steel billets to be transported.

[0012] Furthermore, the protective frame is integrally cut and formed from a steel plate, and includes a crossbeam and columns arranged at both ends of the crossbeam; wherein the upper surface of the crossbeam and the inner side surfaces of the columns together form the groove.

[0013] Furthermore, a matching inner lining plate is provided on the inner side surface of the column.

[0014] Furthermore, the width h2 of the inner lining plate is greater than the total width h1 of the protective frame after being connected to the H-shaped steel.

[0015] Furthermore, the end of the inner lining plate extends beyond the outermost column by a length of 50-150 mm.

[0016] Furthermore, the outer side surface of the column is connected to an outer sealing plate, and the top of the outer sealing plate extends beyond the bottom of the outer side surface of the column.

[0017] Furthermore, a welding opening is provided on the outer sealing plate, and the end of the H-shaped steel extends out of the welding opening or is located in the welding opening.

[0018] Furthermore, the inner side surface of the column is an arc-shaped side surface.

[0019] Furthermore, the upper flange of the H-shaped steel is lower than the top of the beam, and the lower flange thereof is higher than the bottom of the beam.

[0020] Furthermore, there are three protective frames and two H-shaped steels.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) The utility model provides a lightweight crossarm assembly that uses H-shaped steel to replace the traditional billet crossarms and steel plates to replace the billet columns, which greatly reduces the weight of the crossarm assembly, thereby effectively increasing the actual load capacity of the vehicle and reducing transportation costs. At the same time, the side of the protective frame can be welded along the length of the upper and lower flanges of the H-shaped steel, greatly increasing the welding area, thereby effectively ensuring the connection strength of the protective frame.

[0024] (2) The utility model provides a lightweight cross arm assembly, in which the inner side of the column is provided with an inner lining plate, which can effectively increase the contact area between the column and the steel billet, so that the impact force can be more evenly distributed to each column, thereby preventing a certain column from being damaged due to concentrated force.

[0025] (3) In a lightweight cross arm assembly of the present invention, the width of the inner lining plate is greater than the total width of the protective frame and the H-shaped steel after connection. On the one hand, the contact area between the inner lining plate and the steel billet can be further increased; on the other hand, the end of the inner lining plate can extend a distance beyond the outer column, which can facilitate welding and ensure welding strength.

[0026] (4) The utility model provides a lightweight cross-arm assembly, wherein the outer side of the column is connected to an outer cover plate, the top of which extends beyond the bottom of the outer side of the column; during assembly, the cross-arm assembly can be mounted on the carriage by means of the extension sections of the outer cover plates on both sides, making assembly and disassembly quick and easy. At the same time, the outer cover plates are provided with welding ports for welding to H-shaped steel, thereby further ensuring the structural strength of the entire cross-arm assembly.

[0027] (5) In a lightweight cross arm assembly of the present invention, the upper flange of the H-shaped steel is lower than the top of the cross beam, and the lower flange is higher than the bottom of the cross beam, which is also beneficial to ensure the welding strength between the protective frame and the H-shaped steel.

[0028] (6) The utility model is a lightweight cross-arm assembly. For a round billet, the column and inner lining plate are designed to be arc-shaped. Taking advantage of the characteristics of the arc structure with a small head and a large root, when the arc surface is subjected to the lever effect of the horizontal component force, it is equivalent to having reinforcement ribs, and the anti-torque effect is significantly increased. At the same time, comprehensive force analysis shows that in actual operation, the lever effect of the horizontal component force on the column and the resulting torque effect are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of a lightweight crossarm assembly of the present invention;

[0030] Figure 2 This is a schematic diagram of the assembly between the protective frame and the H-shaped steel in the present invention;

[0031] Figure 3 This is a schematic diagram of the assembly of the inner lining plate and the outer sealing plate in the present invention.

[0032] In the figure: 1. Protective frame; 11. Crossbeam; 12. Column; 2. H-shaped steel; 3. Inner lining plate; 4. Outer sealing plate. DETAILED DESCRIPTION

[0033] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] The present invention will be further described below in conjunction with specific embodiments.

[0036] like Figure 1 、 Figure 2 As shown, a lightweight cross arm assembly of this embodiment includes a protective frame 1 and an H-shaped steel 2; wherein, a plurality of protective frames 1 are distributed at intervals, and adjacent protective frames 1 are connected by the H-shaped steel 2.

[0037] Among them, the protective frame 1 is cut and formed as a whole by steel plates, which includes a crossbeam 11 and columns 12 arranged at both ends of the crossbeam 11. The upper surface of the crossbeam 11 and the inner side of the column 12 form a groove. The groove and the top of the upper flange of the H-shaped steel 2 together form a storage space for placing the steel billets to be transported, and the columns 12 on both sides mainly play a protective role.

[0038] The upper and lower flanges of the H-shaped steel 2 are welded to the sides of the corresponding protective frame 1, and the welding can be performed along the length direction of the upper and lower flanges, thereby greatly increasing the welding area, which is beneficial to ensuring the connection strength between the two. At the same time, the upper flange of the H-shaped steel 2 should be as flush as possible with the top of the beam 11, so that the H-shaped steel 2 and the protective frame 1 can jointly bear the gravity of the steel billet. However, in actual operation, in order to ensure the welding strength between the H-shaped steel 2 and the protective frame 1, the upper flange of the H-shaped steel 2 needs to be slightly lower than the top of the beam 11, preferably 3-5mm. Of course, the lower flange of the H-shaped steel 2 needs to be higher than the bottom of the beam 11, which is convenient for welding on the one hand and conducive to ensuring welding strength on the other hand.

[0039] This embodiment utilizes a lightweight crossarm assembly, using H-shaped steel 2 instead of traditional billets as the crossarm. This effectively reduces the weight of the entire crossarm assembly, increasing the vehicle's actual carrying capacity and saving transportation costs. Furthermore, the integrated protective frame 1 is employed, and the weld area between the protective frame 1 and the H-shaped steel 2 is ensured, thereby ensuring connection strength and extending service life.

[0040] In this embodiment, since the columns 12 are cut from steel plates, and the thickness of the steel plates is relatively thin, the actual contact area between the columns 12 and the steel billet is small, making it difficult to ensure that multiple columns 12 are subjected to force at the same time, and thus one column 12 is prone to damage due to concentrated force. Figure 1 、 Figure 3 As shown, in this embodiment, a matching inner lining plate 3 is provided on the inner side of the column 12, which can connect the supporting surfaces of multiple columns 12 into a whole to increase the contact area with the steel billet. This allows the impact force to be more evenly distributed to each column 12, further ensuring its safety in use.

[0041] Furthermore, the width h2 of the inner lining plate 3 is greater than the total width h1 of the multiple protective frames 1 connected to the H-beam 2, so that both ends of the inner lining plate 3 can extend beyond the outermost columns 12. Preferably, the distance of the extension is 50-150 mm. In this embodiment, the inner lining plate 3 adopts a widened design. On the one hand, it further increases the contact area between the inner lining plate 3 and the steel billet; on the other hand, the end of the inner lining plate 3 can extend a distance beyond the outer columns to facilitate welding and ensure weld strength.

[0042] As another embodiment of a lightweight cross arm assembly of this embodiment, refer to Figure 1 、 Figure 3 As shown, an outer cover plate 4 is connected to the outer side of the column 12, and the top of the outer cover plate 4 extends beyond the bottom of the outer side of the column 12. During assembly, the extension sections of the outer cover plates 4 on both sides can be clamped on the carriage, making the assembly operation more convenient and quick.

[0043] At the same time, welding openings are provided in the outer cover plate 4, through which the ends of the H-beam 2 extend or are positioned. This design further ensures the structural strength of the entire crossarm assembly. Of course, the number and location of these welding openings must be consistent with the number of H-beams 2.

[0044] Specifically, in this embodiment, the crossarm assembly consists of three protective frames 1 and two H-shaped steels 2, with one H-shaped steel 2 positioned between two adjacent protective frames 1. The inner lining plate 3 and outer sealing plate 4 can also be made of steel plates. It should be noted that the welding sequence for the crossarm assembly in this embodiment is to first weld the protective frames 1 and H-shaped steels 2 together, followed by the inner lining plate 3 and outer sealing plate 4.

[0045] During transportation, round billets frequently roll and shift laterally due to assembly gaps, accelerating impact damage to pillars 12. To address this, in this embodiment, the inner side of pillars 12 is designed to be curved. Compared to traditional flat pillars, curved pillars have a smaller head and a larger base. This creates a stiffening effect when the curved pillar is subjected to the lever effect of horizontal force components, significantly enhancing its torque resistance. Furthermore, comprehensive force analysis shows that in actual operation, the lever effect of the horizontal force component on the curved surface, and the resulting torque effect, is significantly reduced.

[0046] A lightweight cross arm assembly of this embodiment is composed of steel plates and H-shaped steel 2 as a whole, which can greatly reduce its own weight compared with the traditional square billet structure. The shelf is regarded as part of the total mass of the goods during transportation. When the vehicle's core load mass is fixed, the lighter the shelf, the greater the vehicle's effective cargo capacity, which is beneficial to reducing transportation costs. At the same time, the protective frame 1 is cut and formed as a whole, and the welding area between it and the H-shaped steel 2 can be effectively guaranteed, thereby ensuring the connection strength of the protective frame 1, which can greatly reduce the phenomenon of the steel billet sliding due to damage to the protective frame 1. In addition, by designing the column 12 as an arc column, the damage caused by the impact of the round billet can be further reduced.

[0047] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A lightweight crossarm assembly, characterized by: It comprises a plurality of protective frames (1) distributed at intervals, and adjacent protective frames (1) are connected by H-shaped steel (2); wherein, The upper and lower flanges of the H-shaped steel (2) are welded to the side surfaces of the corresponding protective frame (1); The protective frame (1) is provided with a groove, and the groove and the top of the upper flange of the H-shaped steel (2) together form a receiving space for placing the steel billets to be transported.

2. A lightweight crossarm assembly according to claim 1, characterized in that: The protective frame (1) is formed by integrally cutting a steel plate, and comprises a crossbeam (11) and columns (12) arranged at both ends of the crossbeam (11); wherein the upper surface of the crossbeam (11) and the inner side surface of the column (12) together form the groove.

3. The lightweight cross arm assembly according to claim 2, characterized in that: An inner lining plate (3) matching the inner side of the column (12) is provided.

4. The lightweight cross arm assembly according to claim 3, characterized in that: The width h2 of the inner lining plate (3) is greater than the total width h1 of the protective frame (1) and the H-shaped steel (2) after being connected.

5. The lightweight cross arm assembly according to claim 4, characterized in that: The end of the inner lining plate (3) extends beyond the outermost column (12) by a length of 50-150 mm.

6. A lightweight crossarm assembly according to any one of claims 2 to 5, characterized in that: The outer side surface of the column (12) is connected to an outer sealing plate (4), and the top of the outer sealing plate (4) extends beyond the bottom of the outer side surface of the column (12).

7. The lightweight cross arm assembly according to claim 6, characterized in that: A welding opening is provided on the outer sealing plate (4), and the end of the H-shaped steel (2) extends out of the welding opening or is located in the welding opening.

8. A lightweight crossarm assembly according to any one of claims 2 to 5, characterized in that: The inner side surface of the column (12) is an arc-shaped side surface.

9. The lightweight cross arm assembly according to claim 8, characterized in that: The upper flange of the H-shaped steel (2) is lower than the top of the crossbeam (11), and the lower flange thereof is higher than the bottom of the crossbeam (11).

10. The lightweight cross arm assembly according to claim 9, characterized in that: There are three protective frames (1) and two H-shaped steels (2).

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