Modular cantilever bar screen structure

Abstract

The utility model relates to cantilever bar screen technology field especially relates to a kind of modularization cantilever bar screen structure, including two side plates, several groups of screening mechanisms are arranged along the length direction between two side plates at intervals, and each group of screening mechanism includes crossbeam;Two ends of crossbeam are fixedly connected two side plates respectively;Crossbeam is detachably connected with connecting plate;Connecting plate is fixedly connected with mounting assembly at the end away from crossbeam;Cantilever bar is installed in mounting assembly.In the detachable connection of crossbeam and connecting plate, the modularization combination of screening mechanism is realized, when the specification of screening machine changes, the width and length of screen can be flexibly adjusted by only increasing or decreasing the number of screening mechanism, without redesigning and processing whole screen, greatly improve the adaptability to different specifications screening machine, reduce processing cost.

Description

Technical Field

[0001] This utility model relates to the field of cantilever bar screen technology, and in particular to a modular cantilever bar screen structure. Background Technology

[0002] In material screening operations in industries such as mining, metallurgy, and chemicals, cantilever bar screens are widely used due to their high screening efficiency and resistance to clogging. Current improvements to cantilever bar screens primarily focus on enhancing anti-sticking performance and extending service life. For example, one screen structure (CN217774709U) uses U-shaped cross-section bar supports filled with polyurethane material, enhancing the amplitude of the cantilever bars and effectively solving the problem of moisture-prone particles sticking to the screen. Another vibration-damping cantilever bar screen structure (CN218424006U) designs the screen bars as arc-shaped structures and adds a vibration-damping plate below the front end, utilizing the stress balance principle to reduce fatigue damage to the screen bars and extend the screen's service life.

[0003] The aforementioned existing technologies have optimized cantilever bar screens from the perspectives of anti-clogging and fatigue resistance, but they still have common limitations in structural design. The overall structure of existing screens is mostly a one-piece or large-size screen plate combination, and the connection between the screen rod and the supporting structure (such as support components, crossbeams, etc.) is fixed, making it difficult to flexibly adjust the width and length of the screen according to the specifications of different screening machines.

[0004] This non-modular structural design leads to the following problems: when the screening machine specifications change, the entire screen needs to be redesigned and manufactured, resulting in poor adaptability and high processing costs; large-size screens are difficult to handle during transportation, installation, and maintenance, especially when partial damage requires complete replacement, leading to material waste and increased operating costs. Therefore, there is an urgent need for a cantilever bar screen structure that allows for flexible combination and easy disassembly and maintenance to solve the above-mentioned problems in the existing technology. Utility Model Content

[0005] To address the problems of fixed cantilever bar screens, which result in poor adaptability, high processing costs, and difficulties in transportation, installation, and maintenance, this invention provides a modular cantilever bar screen structure.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: A modular cantilever bar screen structure includes two side plates, with several sets of screening mechanisms spaced along the length between the two side plates. Each set of screening mechanisms includes a crossbeam. The two side plates are fixedly connected to both ends of the crossbeam. A connecting plate is detachably connected to the crossbeam. An installation component is fixedly connected to the end of the connecting plate away from the crossbeam. A cantilever bar is installed within the installation component. This modular cantilever bar screen structure utilizes the detachable connection between the crossbeam and the connecting plate to achieve modular combination of screening mechanisms. When the screen specifications change, only the number of screening mechanisms needs to be increased or decreased to flexibly adjust the width and length of the screen, eliminating the need to redesign and process the entire screen. This greatly improves adaptability to different screen specifications and reduces processing costs. Simultaneously, the modular design reduces the size of individual screening mechanisms, facilitating transportation, installation, and maintenance. Furthermore, when the screen is partially damaged, only the corresponding screening mechanism needs to be replaced, eliminating the need for complete replacement, effectively reducing material waste and operating costs. This solves the problems of poor adaptability, difficult disassembly and maintenance, and the need for complete replacement for partial damage in existing non-modular screens.

[0007] Preferably, the extension direction of the connecting plate and the extension direction of the cantilever bar are set at an acute angle α. The synergistic effect of gravity and vibration caused by the tilt angle further enhances the anti-clogging effect. At the same time, this angle design does not affect the assembly and installation of the modular screen, ensuring screening performance while being compatible with the overall modular structure, thus improving the overall practicality of the screen.

[0008] Preferably, the acute angle α is 30°~35°. This angle has been proven in practice to achieve an optimal balance between ensuring material flow stability and screening efficiency. The tilt angle, combined with the vibration of the cantilever bar, can create a more effective material dispersion and self-cleaning effect. For easily sticky particles with a particle size of about 3mm, the synergistic effect of the impact force brought by the angle and the vibration can significantly reduce the probability of sticking to the screen and getting stuck in the holes.

[0009] Preferably, the crossbeam is a square tube, and the end of the connecting plate furthest from the mounting assembly is detachably connected to the square tube using bolts. The crossbeam adopts a square tube structure and the connecting plate is detachably connected to the square tube using bolts. The square tube, as a crossbeam, has high structural strength and stability, providing reliable support for the screening mechanism and meeting the load-bearing requirements caused by material impact during the screening process.

[0010] Preferably, the mounting assembly includes a vertical plate; a support member is fixedly connected to the upper part of one side of the vertical plate; the longitudinal section of the support member is U-shaped, and the opening of the support member faces the vertical plate; a through hole is provided on the opposite side wall of the opening of the support member; a through hole is provided on the vertical plate, which is coaxial with the through hole; the cantilever bar passes through the through hole and the through hole; a bolt is provided inside the support member to pass through one side wall of the support member and tighten against the cantilever bar; a connecting plate is fixedly connected to the lower end of the vertical plate. The installation assembly structure forms a stable support frame through the fixed connection between the upright plate and support component one. The opening of support component one, with its U-shaped longitudinal section, faces the upright plate. It cooperates with through hole two, which is coaxial with the through hole, providing a bidirectional positioning channel for the cantilever bars, ensuring the coaxiality and stability of the cantilever bar installation. Bolt two inside support component one can directly tighten the cantilever bars, enabling quick tightening and loosening adjustment. This facilitates adjusting the bar position or replacing worn cantilever bars according to material characteristics, simplifying operation. The fixed connection between the lower end of the upright plate and the connecting plate ensures a reliable connection between the installation assembly and the modular structure of the screening mechanism. The overall structure not only ensures the stable installation of the cantilever bars but also improves the convenience of disassembly and maintenance, aligning with the overall modular design concept and further enhancing the practical performance of the screen.

[0011] Preferably, the mounting assembly includes a second support member; the second support member has an inverted L-shaped longitudinal section, and a connecting plate is fixedly connected to the vertical plate end of the second support member; a through hole three is provided on the side wall of the vertical plate of the second support member; a limiting unit is installed after the end of the cantilever bar passes through the third support member; polyurethane is filled in the space between the second support member and the connecting plate, and the polyurethane wraps the through section of the cantilever bar; the limiting unit is used to restrict the axial movement of the cantilever bar. In this installation assembly, the vertical plate end of the inverted L-shaped support component two is fixedly connected to the connecting plate to form a stable support foundation. The through hole three on the side wall of the vertical plate provides a through-positioning for the cantilever bar. The polyurethane filling between support component two and the connecting plate wraps the through-section of the cantilever bar. Utilizing the excellent elasticity and adhesion of polyurethane, it can provide flexible support for the cantilever bar, buffering the impact of screening vibration, enhancing the connection stability between the bar and the support structure, and improving the vibration transmission efficiency of the bar to reduce screen adhesion. The limiting unit effectively restricts the axial movement of the cantilever bar, and together with the positioning function of the through hole three, ensures the stability of the bar's position during screening. The inverted L-shaped structure of support component two, in conjunction with the polyurethane filling and the limiting unit, simplifies the installation structure and facilitates the disassembly and replacement of the cantilever bar, which is consistent with the modular design concept and further improves the screen's vibration resistance, anti-clogging properties, and ease of maintenance.

[0012] Preferably, the limiting unit includes a U-shaped hook fixedly disposed at the end of the cantilever bar; the open end of the U-shaped hook faces the second support member; a pin is inserted into the space between the U-shaped hook and the second support member. The limiting unit adopts a structure of U-shaped hook and pin cooperation. The U-shaped hook is fixed to the end of the cantilever bar with its opening facing the second support member, and the pin is inserted into the space between the U-shaped hook and the second support member. This mechanical limiting method stably restricts the axial movement of the cantilever bar, ensuring its precise position during vibrating screening. This structural design is simple and reliable. During installation, only the pin needs to be inserted to complete the limiting; during disassembly, the pin can be pulled out for easy removal of the cantilever bar. The operation is convenient and adapts to the rapid assembly and disassembly requirements of modular screens. Simultaneously, the cooperation between the U-shaped hook and the pin can withstand large axial forces and is not prone to failure due to long-term vibration, effectively ensuring the installation stability of the cantilever bar, thereby improving the overall service life and screening efficiency of the screen.

[0013] Preferably, the limiting unit includes a nut threaded onto the outer wall of the cantilever bar end; the outer diameter of the nut is larger than the diameter of the through hole three. The axial movement of the cantilever bar can be effectively limited through a simple threaded connection, resulting in a simple structure and low cost. During installation, simply tighten the nut onto the end of the cantilever bar; during disassembly, loosen it by twisting in the opposite direction to quickly complete the assembly and disassembly of the cantilever bar. The operation is convenient and efficient, meeting the rapid maintenance needs of modular screens.

[0014] As can be seen from the above technical solutions, the advantages of this utility model include: the modular cantilever bar screen structure utilizes the detachable connection between the crossbeam and the connecting plate to achieve modular combination of the screening mechanism. When the screen specifications change, only the number of screening mechanisms needs to be increased or decreased to flexibly adjust the width and length of the screen, without the need to redesign and process the entire screen, greatly improving the adaptability to different screen specifications and reducing processing costs; at the same time, the modular structural design reduces the size of a single screening mechanism, facilitating transportation, installation and maintenance, and when the screen is partially damaged, only the corresponding screening mechanism needs to be replaced, without the need for complete replacement, effectively reducing material waste and usage costs, and solving the problems of poor adaptability, difficult disassembly and maintenance, and the need for complete replacement for partial damage in existing non-modular screens. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0017] Figure 2This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the connecting plate, mounting assembly, and cantilever bar of Embodiment 1 of this utility model.

[0019] Figure 4 This is a schematic diagram of the connecting plate, mounting assembly, and cantilever bar of Embodiment 2 of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1-Side plate, 2-Crossbeam, 3-Connecting plate, 4-Mounting assembly, 5-Cantilever bar, 6-Bolt 1, 7-Polyurethane, 8-Pin; 401-Upright plate, 402-Support component 1, 403-Through hole 1, 404-Through hole 2, 405-Bolt 2, 406-Support component 2, 407-Through hole 3. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] Example 1 like Figure 1 , Figure 2 and Figure 3 As shown, a modular cantilever bar screen structure includes two side plates 1, and several sets of screening mechanisms are spaced apart along the length between the two side plates 1. Each set of screening mechanisms includes a crossbeam 2. The two side plates 1 are fixedly connected to both ends of the crossbeam 2. A connecting plate 3 is detachably connected to the crossbeam 2. An installation component 4 is fixedly connected to the end of the connecting plate 3 away from the crossbeam 2. A cantilever bar 5 is installed inside the installation component 4.

[0023] This modular cantilever bar screen structure utilizes the detachable connection between the crossbeam 2 and the connecting plate 3 to achieve modular combination of the screening mechanism. When the screen specifications change, the width and length of the screen can be flexibly adjusted simply by increasing or decreasing the number of screening mechanisms, without the need to redesign and process the entire screen. This greatly improves the adaptability to different screen specifications and reduces processing costs. At the same time, the modular structure design reduces the size of individual screening mechanisms, facilitating transportation, installation, and maintenance. Furthermore, when the screen is partially damaged, only the corresponding screening mechanism needs to be replaced, without the need for complete replacement. This effectively reduces material waste and operating costs, and solves the problems of poor adaptability, difficult disassembly and maintenance, and the need for complete replacement when partially damaged existing non-modular screens.

[0024] In the above configuration, the extension direction of the connecting plate 3 and the extension direction of the cantilever bar 5 form an acute angle α, where α is 30°. The crossbeam 2 is a square tube, and the end of the connecting plate 3 away from the mounting component 4 is detachably connected to the square tube using bolt 6.

[0025] The synergistic effect of gravity and vibration brought about by the tilt angle further enhances the anti-clogging effect. Simultaneously, this angle design does not affect the modular screen assembly and installation, ensuring screening performance while adapting to the overall modular structure, thus improving the screen's overall practicality. Practical experience has proven that this angle achieves an optimal balance between material flow stability and screening efficiency. The tilt angle, combined with the vibration of the cantilever bar 5, creates a more effective material dispersion and self-cleaning effect. For easily sticky particles around 3mm in diameter, the synergistic effect of the impact force and vibration from the angle significantly reduces the probability of screen sticking and jamming. The crossbeam 2 adopts a square tube structure, and the connecting plate 3 is detachably connected to the square tube via bolt 6. The square tube, as the crossbeam 2, possesses high structural strength and stability, providing reliable support for the screening mechanism and meeting the load-bearing requirements brought about by material impact during the screening process.

[0026] The mounting assembly 4 includes a vertical plate 401; a support member 402 is fixedly connected to the upper part of one side of the vertical plate 401; the longitudinal section of the support member 402 is U-shaped, and the opening of the support member 402 faces the vertical plate 401; a through hole 403 is provided on the opposite side wall of the opening of the support member 402; a through hole 404 coaxial with the through hole 403 is provided on the vertical plate 401; the cantilever bar 5 passes through the through hole 403 and the through hole 404; a bolt 405 is provided in the support member 402 to tighten the cantilever bar 5 by passing through the side wall of the support member 402; and a connecting plate 3 is fixedly connected to the lower end of the vertical plate 401.

[0027] The installation component 4 forms a stable support frame through the fixed connection between the upright plate 401 and the support member 402. The U-shaped longitudinal section of the support member 402 faces the upright plate 401 and, together with the through hole 404 coaxial with the through hole 403, provides a bidirectional positioning channel for the cantilever bar 5, ensuring the coaxiality and stability of the cantilever bar 5 installation. The bolt 405 inside the support member 402 can directly tighten the cantilever bar 5, enabling quick tightening and loosening adjustment of the cantilever bar 5. This facilitates adjusting the bar position or replacing worn cantilever bars 5 according to material characteristics, making operation simple. The fixed connection between the lower end of the upright plate 401 and the connecting plate 3 ensures a reliable connection between the installation component 4 and the modular structure of the screening mechanism. The overall structure not only ensures the stable installation of the cantilever bar 5 but also improves the convenience of disassembly and maintenance, which is consistent with the overall concept of modular design and further enhances the practical performance of the screen.

[0028] Example 2 The difference from Embodiment 1 is the installation component 4; the rest of the structure is the same as in Embodiment 1.

[0029] like Figure 4 As shown, the mounting assembly 4 includes a second support member 406; the second support member 406 has an inverted L-shaped longitudinal section, and the vertical plate end of the second support member 406 is fixedly connected to the connecting plate 3; a through hole 3 407 is provided on the side wall of the vertical plate of the second support member 406; a limiting unit is installed after the end of the cantilever bar 5 passes through the through hole 3 407 through the second support member 406; the space between the second support member 406 and the connecting plate 3 is filled with polyurethane 7, and the polyurethane 7 wraps the through section of the cantilever bar 5; the limiting unit is used to restrict the axial movement of the cantilever bar 5.

[0030] In this installation assembly 4, the vertical plate end of the inverted L-shaped support member 2 406 is fixedly connected to the connecting plate 3 to form a stable support foundation. The through hole 3 407 on the side wall of the vertical plate provides a through-hole positioning for the cantilever bar 5. The polyurethane 7 filling between the support member 2 406 and the connecting plate 3 wraps the through-hole section of the cantilever bar 5. Utilizing the excellent elasticity and adhesion of polyurethane 7, it can not only provide flexible support for the cantilever bar 5 and buffer the impact of screening vibration, but also enhance the connection stability between the bar and the support structure, while improving the vibration transmission efficiency of the bar to reduce screen adhesion. The limiting unit effectively restricts the axial movement of the cantilever bar 5, and together with the positioning function of the through hole 3 407, ensures the stability of the bar position during screening. The inverted L-shaped structure of the support member 2 406, together with the polyurethane 7 filling and the limiting unit, simplifies the installation structure and facilitates the disassembly and replacement of the cantilever bar 5, which is in line with the modular design concept and further improves the vibration resistance, anti-clogging and maintenance convenience of the screen.

[0031] The limiting unit includes a U-shaped hook 501 fixedly mounted at the end of the cantilever bar 5; the open end of the U-shaped hook 501 faces the second support member 406; a pin 8 is inserted into the space between the U-shaped hook 501 and the second support member 406. The limiting unit adopts a structure where the U-shaped hook and pin 8 cooperate. The U-shaped hook is fixed to the end of the cantilever bar 5 with its opening facing the second support member 406, and the pin 8 is inserted into the space between the U-shaped hook and the second support member 406. This mechanical limiting method can stably restrict the axial movement of the cantilever bar 5, ensuring its precise position during vibrating screening. This structural design is simple and reliable. During installation, only the pin 8 needs to be inserted to complete the limiting; during disassembly, the pin 8 can be pulled out for easy removal of the cantilever bar 5. The operation is convenient and adapts to the rapid assembly and disassembly requirements of modular screens. Simultaneously, the cooperation between the U-shaped hook and the pin 8 can withstand large axial forces and is not prone to failure due to long-term vibration, effectively ensuring the installation stability of the cantilever bar 5, thereby improving the overall service life and screening efficiency of the screen.

[0032] In other alternative embodiments, the limiting unit includes a nut threaded onto the outer wall of the end of the cantilever bar 5; the outer diameter of the nut is larger than the diameter of the through hole 407. The axial movement of the cantilever bar 5 can be effectively limited through a simple threaded connection, resulting in a simple structure and low cost. During installation, simply tighten the nut onto the end of the cantilever bar 5; during disassembly, loosen it by twisting it in the opposite direction to quickly complete the assembly and disassembly of the cantilever bar 5. The operation is convenient and efficient, adapting to the rapid maintenance needs of modular screens.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular cantilever bar screen structure, comprising two side plates (1), wherein a plurality of screening mechanisms are spaced apart along the length direction between the two side plates (1), characterized in that, Each screening mechanism includes a crossbeam (2); two side plates (1) are fixedly connected to both ends of the crossbeam (2); a connecting plate (3) is detachably connected to the crossbeam (2); an installation component (4) is fixedly connected to the end of the connecting plate (3) away from the crossbeam (2); a cantilever bar (5) is installed inside the installation component (4); The extension direction of the connecting plate (3) is set at an acute angle α with the extension direction of the cantilever bar (5); the acute angle α is 30°~35°; the crossbeam (2) is a square tube, and the end of the connecting plate (3) away from the installation component (4) is detachably connected to the square tube by bolt (6); The mounting assembly (4) includes a vertical plate (401); a support member (402) is fixedly connected to the upper part of one side of the vertical plate (401); the longitudinal section of the support member (402) is U-shaped, and the opening of the support member (402) faces the vertical plate (401); a through hole (403) is provided on the opposite side wall of the opening of the support member (402); a through hole (404) is provided on the vertical plate (401) and is coaxial with the through hole (403); the cantilever bar (5) passes through the through hole (403) and the through hole (404); a bolt (405) is provided in the support member (402) to tighten the cantilever bar (5) by passing through the side wall of the support member (402); a connecting plate (3) is fixedly connected to the lower end of the vertical plate (401).

2. The modular cantilever bar screen structure according to claim 1, characterized in that, The mounting assembly (4) includes a second support member (406); the second support member (406) has an inverted L-shaped longitudinal section, and the vertical plate end of the second support member (406) is fixedly connected to the connecting plate (3); a through hole (407) is provided on the side wall of the vertical plate of the second support member (406); a limiting unit is installed after the end of the cantilever bar (5) passes through the third cantilever bar (407) through the second support member (406); the space between the second support member (406) and the connecting plate (3) is filled with polyurethane (7), and the polyurethane (7) wraps the through section of the cantilever bar (5); the limiting unit is used to restrict the cantilever bar (5) from moving upward along the axial direction.

3. The modular cantilever bar screen structure according to claim 2, characterized in that, The limiting unit includes a U-shaped hook (501) fixedly installed at the end of the cantilever bar (5); the open end of the U-shaped hook (501) faces the second support member (406); a pin (8) is inserted in the space between the U-shaped hook (501) and the second support member (406).

4. The modular cantilever bar screen structure according to claim 2, characterized in that, The limiting unit includes a nut threaded on the outer wall of the end of the cantilever bar (5); the outer diameter of the nut is larger than the diameter of the through hole three (407).

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