Square tube cross beam structure with trapezoidal reinforcing plates and vibrating screening equipment

Abstract

The utility model relates to the technical field of vibration screening equipment, in particular to a square tube cross beam structure with a trapezoid reinforcing plate and vibration screening equipment. The cross beam connecting plates are welded to the two ends of the square tube and used for being connected with a screen frame or an external component; the cross beam trapezoidal plates are symmetrically attached to the side walls of the square tube, and the lower bottoms of the cross beam trapezoidal plates extend outwards to form supporting surfaces; the square plate is fixed at the upper end of the trapezoidal plate of the cross beam and is used for dispersing load; mounting holes are formed in the upper portion of the square plate and used for being connected with a screen bottom beam. The scheme has the advantages of light weight, high fatigue resistance and process adaptability.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screening equipment technology, and in particular to a square tube beam structure with trapezoidal reinforcing plate and a vibrating screening equipment. Background Technology

[0002] Vibrating screens (such as banana screens) are indispensable key equipment in industries such as mining, metallurgy, and coal, mainly used for particle size classification, dewatering, and demediuming of materials. Their core supporting structure—the square tube beam—must withstand high-frequency vibration loads and continuous impact from materials, placing extremely high demands on the structure's strength, fatigue resistance, and lightweight design.

[0003] Traditional square tube beams are often reinforced with rectangular stiffening plates. However, this design has the following drawbacks: Stress concentration: Stress concentration easily occurs at the right-angle connection between the rectangular stiffening plate and the side wall of the square tube, significantly increasing the risk of fatigue fracture in the weld area; Welding process defects: The stiffening plate and the square tube need to be welded on both sides, resulting in long welds and high heat input, which can easily lead to welding deformation and cracking; Weight and efficiency contradiction: Although rectangular stiffening plates can improve rigidity, they excessively increase the structural weight, which contradicts the trend of lightweight design; Insufficient assembly precision: Traditional connection methods lack tolerance compensation design, making assembly difficult due to processing errors and affecting equipment stability.

[0004] While some existing technologies attempt to improve these issues by optimizing the shape of the reinforcing plate or adjusting the welding process, limitations remain. For example, while trapezoidal reinforcing plates with symmetrical welding can distribute some stress, they do not address the issues of weld length and thermal deformation; and while localized openings can reduce weight, they may weaken the structural strength. Furthermore, the connection method for the screen base often uses fixed bolt holes, lacking flexible adjustment capabilities and making it difficult to adapt to dynamic loads under complex working conditions.

[0005] To address the aforementioned technical bottlenecks, there is an urgent need for a square tube beam structure that combines lightweight design, high fatigue resistance, and process adaptability. This invention optimizes the stress transmission path by introducing trapezoidal reinforcing plates, and combines single-sided welding, strip hole tolerance compensation design, and modular connecting seat structure to achieve balanced stress distribution, simplified welding processes, and improved assembly efficiency, providing reliable support for the efficient and stable operation of vibrating screening equipment.

[0006] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to provide a square tube beam structure with trapezoidal reinforcing plates and a vibrating screening device, which has the advantages of lightweight, high fatigue resistance, and process adaptability.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] This application provides a square tube beam structure with trapezoidal reinforcing plates, the technical solution of which is as follows: It includes a square tube as the main supporting structure; beam connecting plates welded to both ends of the square tube for connecting a screen frame or external components; trapezoidal beam plates symmetrically attached to the side walls of the square tube, with their lower base extending outwards to form a supporting surface; a square plate fixed to the upper end of the trapezoidal beam plates for distributing load; and mounting holes provided on the upper part of the square plate for connecting the bottom beam of the screen.

[0010] Furthermore, this application also proposes that the upper trapezoidal base and its hypotenuse of the trapezoidal plate of the beam are welded to the side wall of the square tube, and the upper trapezoidal base is attached to the upper edge of the side wall of the square tube, and the lower trapezoidal base is attached to the lower edge of the side wall of the square tube.

[0011] Furthermore, this application also proposes that the inclination angle of the trapezoidal section of the crossbeam trapezoidal plate is 15°-45°, which is used to guide stress to be transmitted to both sides and reduce the stress peak at the weld.

[0012] Furthermore, this application also proposes that the trapezoidal plate of the crossbeam and the side wall of the square tube are connected by single-sided welding to reduce the weld length and the risk of thermal deformation.

[0013] Furthermore, this application also proposes that the lower base extension length of the trapezoidal beam plate is 1.5-8 times its upper base length, in order to expand the support area and optimize stress distribution.

[0014] Furthermore, this application also proposes that the square plate is provided with a plurality of first strip-shaped holes, and the crossbeam trapezoidal plate is provided with a plurality of second strip-shaped holes, for adjusting assembly tolerances and mitigating welding thermal deformation.

[0015] Furthermore, this application also proposes that the upper end surface of the square plate is provided with a plurality of connecting seats along the length direction of the square tube, and the connecting seats are used to connect to the bottom beam supporting the screen.

[0016] Furthermore, this application also proposes that the connecting seat includes two L-shaped angle steels arranged back to back, with the back sides of the two L-shaped angle steels fixedly connected and the bottom surface fixedly connected to the upper end surface of the square plate.

[0017] Furthermore, this application also proposes that the square tube, the beam connecting plate, the beam trapezoidal plate, and the square plate are all made of alloy steel with fatigue resistance.

[0018] Furthermore, this application also proposes a vibrating screening device, including the aforementioned square tube beam structure; the beam connecting plates on both sides of the square tube are connected to the side walls of the vibrating screening device.

[0019] As can be seen from the above, the square tube beam structure with trapezoidal reinforcing plate and the vibrating screening equipment provided in this application optimize the stress transmission path by introducing trapezoidal reinforcing plate, and combine single-sided welding, strip hole tolerance compensation design and modular connecting seat structure to achieve stress distribution equalization, welding process simplification and assembly efficiency improvement. It has the advantages of lightweight, high fatigue resistance and process adaptability. Attached Figure Description

[0020] Figure 1 A schematic diagram of a square tube beam structure with trapezoidal reinforcing plates provided for this application.

[0021] Figure 2 This is a schematic diagram of a vibrating screening device provided in Embodiment 2 of this application. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", and "width" are used interchangeably.

[0024] The orientation or positional relationship indicated by terms such as "degree", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", and "counterclockwise" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] like Figure 1 As shown, this embodiment relates to a square tube beam structure with trapezoidal reinforcing plates, including a square tube 2 as the main support structure; a beam connecting plate 1, welded to both ends of the square tube 2, used to connect the screen frame or external components; a trapezoidal beam plate 3, symmetrically attached to the side wall of the square tube 2, with its lower bottom extending outward to form a support surface; a square plate 4, fixed to the upper end of the trapezoidal beam plate 3, used to distribute the load; and mounting holes on the upper part of the square plate 4 for connecting the bottom beam of the screen. This technical solution optimizes the stress transmission path by introducing trapezoidal reinforcing plates, and combines single-sided welding, strip hole tolerance compensation design, and modular connecting seat 7 structure to achieve balanced stress distribution, simplified welding process, and improved assembly efficiency. The square tube 2, as the main support structure, provides basic support force. The beam connecting plate 1, welded to both ends of the square tube 2, ensures a stable connection with the screen frame or external components. The trapezoidal plate 3 of the crossbeam is symmetrically attached to the side wall of the square tube 2, with its lower base extending outward to form a support surface. The inclined design of the trapezoidal plate guides stress to both sides, reducing stress peaks at the weld and minimizing stress concentration. The square plate 4 is fixed to the upper end of the trapezoidal plate 3, further dispersing the load, and connects to the bottom beam of the screen through the mounting holes at the top, improving the stability and assembly accuracy of the structure. These technical features work together to solve the technical problems of the square tube crossbeam structure under high-frequency vibration loads and material impacts.

[0029] Furthermore, this application proposes that the upper base and hypotenuse of the trapezoidal plate 3 of the crossbeam are welded to the side wall of the square tube 2, with the upper base of the trapezoidal plate 3 fitting against the upper edge of the side wall of the square tube 2, and the lower base of the trapezoidal plate fitting against the lower edge of the side wall of the square tube 2. The fitting method between the upper base of the trapezoidal plate and the upper edge of the side wall of the square tube 2 can be seamless welding or partial welding to ensure a tight connection. Through the above technical solution, the tight connection between the trapezoidal plate 3 and the side wall of the square tube 2 can effectively disperse the stress in the welding area and reduce stress concentration. At the same time, the fitting design of the trapezoidal structure reduces the risk of thermal deformation during welding, thereby improving the stability and durability of the structure. Compared with the prior art, this solution not only simplifies the welding process but also significantly improves the fatigue resistance of the structure by optimizing the stress transmission path, solving the problems of stress concentration and welding deformation present in traditional rectangular reinforcing plates.

[0030] Furthermore, this application proposes that the inclination angle of the trapezoidal section of the crossbeam trapezoidal plate 3 be 15°-45° to guide stress transmission to both sides and reduce the stress peak at the weld. Specifically, the inclination angle of the trapezoidal section of the crossbeam trapezoidal plate 3 is 15°-45°. This design, by changing the shape and angle of the reinforcing plate, allows stress to be transmitted more evenly to both sides, thereby reducing stress concentration in the weld area. This design effectively reduces the stress peak at the weld, reduces the risk of fatigue fracture, and improves the durability and reliability of the structure. As a preferred embodiment, the inclination angle can be set to 30° to achieve the best stress distribution effect. In this regard, the technical solution of this application achieves stress distribution equalization by optimizing the shape and angle of the crossbeam trapezoidal plate 3, significantly reducing stress concentration in the weld area. Compared with the prior art, this solution not only improves the fatigue resistance of the structure but also simplifies the welding process, reduces the risk of thermal deformation, thereby improving the overall stability and reliability of the structure.

[0031] Furthermore, the trapezoidal beam plate 3 and the sidewall of the square tube 2 are connected by single-sided welding. The specific implementation of single-sided welding can include welding only on one side of the contact surface between the trapezoidal beam plate 3 and the sidewall of the square tube 2, leaving the other side unwelded. This welding method can be achieved by adjusting the welding angle, welding speed, and welding current to ensure welding quality while reducing weld length. In addition, single-sided welding can also employ advanced welding technologies such as laser welding and gas-shielded welding to further reduce heat input and the risk of thermal deformation. Specifically, single-sided welding reduces heat input during the welding process by decreasing weld length, thereby reducing the risk of thermal deformation. Single-sided welding not only simplifies the welding process but also improves welding efficiency, while reducing assembly errors caused by welding thermal deformation, enhancing the stability and reliability of the structure. Compared with existing technologies, single-sided welding effectively solves the problems of thermal deformation and stress concentration caused by traditional double-sided welding while ensuring structural strength, providing reliable support for the efficient and stable operation of the vibrating screening equipment.

[0032] Furthermore, this application proposes that the lower base extension length of the crossbeam trapezoidal plate 3 is 1.5-8 times the length of its upper base to expand the support area and optimize stress distribution. Specifically, the lower base extension length of the crossbeam trapezoidal plate 3 can be achieved by adjusting its ratio to the upper base; for example, the lower base extension length can be 1.5, 2, 3, 4, 5, 6, 7, or 8 times the length of the upper base. This design effectively expands the support area by increasing the length of the lower base, thereby optimizing stress distribution. Through this design, the crossbeam trapezoidal plate 3 can better disperse and transfer stress, reduce stress concentration, and improve the overall stability and durability of the structure.

[0033] like Figure 1 As shown, the square plate 4 has multiple first strip-shaped holes 5, and the trapezoidal beam plate 3 has multiple second strip-shaped holes 6, used to alleviate welding heat deformation. The shapes of the first strip-shaped holes 5 and the second strip-shaped holes 6 can be rectangular, elliptical, or other suitable geometric shapes, and the size and number of holes can be adjusted according to specific application scenarios. As a preferred embodiment, the first strip-shaped holes 5 and the second strip-shaped holes 6 can be arranged symmetrically to further optimize stress distribution and heat deformation mitigation. Specifically, by providing multiple strip-shaped holes on the square plate 4 and the trapezoidal beam plate 3, the design of the strip-shaped holes helps to alleviate heat deformation generated during welding, reduce structural deformation caused by thermal stress, and improve the overall stability and reliability of the structure. Therefore, the technical solution of this application significantly improves assembly tolerance and welding heat deformation problems by introducing the strip-shaped hole design. Compared with the prior art, this solution not only improves the stability and reliability of the structure but also simplifies the assembly process and reduces production costs. Therefore, the technical solution of this application has significant advantages and practicality in practical applications.

[0034] Furthermore, this application proposes that multiple connecting seats 7 be provided on the upper end face of the square plate 4 along the length of the square tube 2, and the connecting seats 7 are used to connect and support the bottom beam of the screen. The design of the connecting seats 7 makes the installation of the bottom beam of the screen more convenient, while improving the stability and load-bearing capacity of the structure. Through the above technical solution, this application effectively solves the technical problems of inflexible connection between the square plate 4 and the bottom beam of the screen and difficulty in adapting to dynamic loads. The design of the connecting seats 7 makes the installation of the bottom beam of the screen more flexible and can adapt to different working environments and load conditions, thereby improving the overall stability and service life of the equipment. Compared with the prior art, this application simplifies the installation process by optimizing the structure of the connecting seats 7, reduces the risk of welding thermal deformation and stress concentration, and significantly improves the reliability and maintenance convenience of the equipment. Specifically, the connecting seat 7 includes two L-shaped angle steels 8 arranged back to back, with the back sides of the two L-shaped angle steels 8 fixedly connected and the bottom surface fixedly connected to the upper end face of the square plate 4. The back sides of the L-shaped angle steels 8 can be fixedly connected by welding, bolting, or other mechanical connection methods to ensure a stable connection between the two angle steels. The bottom surface of the connecting seat 7 is fixed to the upper surface of the square plate 4 by welding or bolts, ensuring a firm connection between the connecting seat 7 and the square plate 4. As a preferred embodiment, the size and thickness of the L-shaped angle steel 8 can be adjusted according to actual load requirements to enhance the load-bearing capacity and stability of the connecting seat 7. Furthermore, the material of the L-shaped angle steel 8 can be high-strength alloy steel to improve its fatigue resistance and durability. Thus, this technical solution enhances the structural stability of the connecting seat 7 by using two back-to-back L-shaped angle steels 8, enabling it to better bear the load of the screen bottom beam. Simultaneously, this design improves assembly flexibility, facilitating adjustment and installation. By fixing the back sides of the two L-shaped angle steels 8 together and the bottom surface fixed to the upper surface of the square plate 4, the connecting seat 7 provides more reliable support in the vibrating screening equipment, ensuring a stable connection of the screen bottom beam, thereby improving the overall stability and operating efficiency of the equipment. Compared with existing technologies, this solution not only solves the problem of insufficient structural stability of traditional connecting seats but also simplifies the assembly process and improves the maintainability and service life of the equipment.

[0035] Furthermore, this application proposes that the square tube 2, the beam connecting plate 1, the beam trapezoidal plate 3, and the square plate 4 are all made of fatigue-resistant alloy steel. By using fatigue-resistant alloy steel, the fatigue resistance of the square tube beam structure under high-frequency vibration loads is improved, thereby extending the service life of the structure and reducing equipment failures and maintenance costs caused by fatigue fracture. Specifically, fatigue-resistant alloy steel can include, but is not limited to, high-strength low-alloy steel (HSLA), maraging steel, or duplex stainless steel. These materials have high yield strength and fatigue limit, and can effectively resist crack initiation and propagation under high-frequency vibration loads. For example, high-strength low-alloy steel can refine grains and improve the toughness of the material by adding trace amounts of niobium, vanadium, etc.; maraging steel can significantly improve the strength and fatigue resistance of the material through age hardening treatment; duplex stainless steel has the dual characteristics of austenitic and ferritic materials, and has good corrosion resistance and fatigue resistance. Therefore, by using alloy steel with fatigue resistance, the fatigue resistance of the square tube beam structure under high-frequency vibration loads has been significantly improved. Compared with existing technologies, this solution not only effectively solves the problem of fatigue fracture easily occurring in traditional square tube beams under high-frequency vibration, but also achieves lightweight and long-life design through optimized material selection. Specifically, the fatigue-resistant alloy steel effectively disperses stress concentration, reduces fatigue risk in the weld area, and reduces equipment failure and maintenance costs caused by material failure, providing a reliable guarantee for the stable operation of the vibrating screening equipment.

[0036] Example 2:

[0037] like Figure 2As shown, this embodiment also proposes a vibrating screening device, which includes the square tube beam structure described in Embodiment 1. The beam connecting plates 1 on both sides of the square tube 2 are connected to the side walls of the vibrating screening device. The square tube beam structure includes the square tube 2, the beam connecting plates 1, the trapezoidal beam plate 3, and the square plate 4. Through optimized design, such as the introduction of the trapezoidal reinforcing plate 3, single-sided welding, tolerance compensation design of the strip holes 5-6, and the modular connecting seat 7 structure, these components achieve balanced stress distribution, simplified welding process, and improved assembly efficiency, thereby enhancing the overall performance of the structure. Thus, this technical solution, by introducing the square tube beam structure, solves the technical problems of strength, fatigue resistance, and lightweight design of the square tube beam structure in vibrating screening devices under high-frequency vibration loads and continuous material impact. Specifically, the beam connecting plates 1 on both sides of the square tube 2 are connected to the side walls of the vibrating screening device, further ensuring the stability and connection strength of the structure. Compared with existing technologies, this technical solution achieves balanced stress distribution, simplified welding process, and improved assembly efficiency through optimized design, such as the introduction of trapezoidal reinforcing plate 3, single-sided welding, tolerance compensation design of strip holes 5-6, and modular connecting seat 7 structure, thereby enhancing the overall performance of the structure.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A square tube beam structure with trapezoidal reinforcing plates, characterized in that, include: - Square tube (2), as the main supporting structure; - Crossbeam connecting plate (1), welded to both ends of the square tube (2), used to connect the screen frame or external components; - A crossbeam trapezoidal plate (3) is symmetrically attached to the side wall of the square tube (2), and its bottom extends outward to form a support surface; - A square plate (4) is fixed to the upper end of the trapezoidal plate (3) of the crossbeam to distribute the load; the upper part of the square plate (4) is provided with mounting holes for connecting the bottom beam of the screen.

2. The square tube beam structure according to claim 1, characterized in that: - The upper base of the trapezoidal plate (3) and its hypotenuse are welded to the side wall of the square tube (2), and the upper base of the trapezoidal plate is attached to the upper edge of the side wall of the square tube (2), and the lower base of the trapezoidal plate is attached to the lower edge of the side wall of the square tube (2).

3. The square tube beam structure according to claim 1 or 2, characterized in that: - The trapezoidal section of the crossbeam trapezoidal plate (3) has an inclination angle of 15°-45°, which is used to guide the stress to be transmitted to both sides and reduce the stress peak at the weld.

4. The square tube beam structure according to claim 1 or 2, characterized in that: - The trapezoidal plate (3) of the crossbeam and the side wall of the square tube (2) are connected by single-sided welding to reduce the weld length and the risk of thermal deformation.

5. The square tube beam structure according to claim 1 or 2, characterized in that: - The lower base extension length of the crossbeam trapezoidal plate (3) is 1.5-8 times the length of its upper base, in order to expand the support area and optimize stress distribution.

6. The square tube beam structure according to claim 1, characterized in that: - The square plate (4) is provided with a plurality of first strip holes (5), and the crossbeam trapezoidal plate (3) is provided with a plurality of second strip holes (6) to alleviate welding heat deformation.

7. The square tube beam structure according to claim 1, characterized in that: - The upper end face of the square plate (4) is provided with a plurality of connecting seats (7) along the length direction of the square tube (2), and the connecting seats (7) are used to connect and support the bottom beam of the screen.

8. The square tube beam structure according to claim 7, characterized in that: - The connecting seat (7) includes two L-shaped angle steels (8) arranged back to back, with the back sides of the two L-shaped angle steels (8) fixed together and the bottom surface fixed to the upper end surface of the square plate (4).

9. The square tube beam structure according to claim 1, characterized in that: - The square tube (2), the crossbeam connecting plate (1), the crossbeam trapezoidal plate (3) and the square plate (4) are all made of alloy steel with fatigue resistance.

10. A vibrating screening device, characterized in that, Includes the square tube beam structure as described in any one of claims 1-9; - The crossbeam connecting plates (1) on both sides of the square tube (2) are connected to the two side walls of the vibrating screening equipment.

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