Plane degrading chute grizzly based on composite wear-resistant layer

Abstract

This utility model relates to the field of slag discharge chute technology, and more particularly to a planar slag discharge chute based on a composite wear-resistant layer. The technical solution includes a main frame, within which two I-beam main beams, arranged in a staggered, intersecting pattern and offset vertically, are mounted via connecting plates and mounting angle steel. The main beams are connected and fixed together by high-strength bolts. High-manganese steel plates are integrally welded to the top surface and flanges of all the I-beam main beams, forming a continuous composite wear-resistant planar layer, which greatly improves impact resistance and wear resistance. Furthermore, the chute integrates an adjustment mechanism. By pulling the positioning plate to disengage the locking block from the slot, the entire set of main beams fixed to the connecting plate can slide along the sliding groove, thereby steplessly adjusting the grid gap between the main beams, and resetting and locking under the action of a spring. This utility model solves the problems of easy damage, ore jamming, and non-adjustable gaps in traditional chute screens, achieving a comprehensive effect of long service life, high efficiency, and convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of slag discharge chute technology, and in particular to a planar slag discharge chute based on a composite wear-resistant layer. Background Technology

[0002] In underground mining and the transition from open-pit to underground mining, the ore pass system is a crucial link connecting the stope and the transportation level. Its smooth operation directly affects the overall production efficiency and cost of the mine. The ore pass screen plays a vital role in screening qualified ore and intercepting and positioning large pieces for secondary crushing. However, with increasing mining depth and ore hardness, the impact loads and wear intensity on the screens are intensifying, posing a severe challenge to their durability and reliability.

[0003] Currently, traditional ore pass screens commonly used in mines mostly employ sectional steel (such as I-beams and square steel) directly joined longitudinally and transversely, or round steel bars and steel rods welded to the main beam to form a grid. These structures primarily rely on the strength and wear resistance of the steel itself to withstand the impact of ore. The technical principle is to mechanically screen the falling ore using a steel grid; ore smaller than the grid gaps passes through naturally, while ore larger than the gaps is blocked on the screen surface.

[0004] However, the aforementioned existing technical solutions have an inherent drawback: their surface structure is uneven and lacks wear resistance. The welding contact area between components such as round steel and the main beam is small, and under long-term, high-frequency, and intense impacts, the weld points are prone to cracking, leading to screen bar detachment and screen structure failure. Simultaneously, the crisscrossing protrusions easily trap large pieces of ore, not only hindering the normal operation of the crushing equipment and significantly reducing ore extraction efficiency, but also causing significant concentrated stress on the screen under subsequent impacts, further accelerating structural damage, resulting in frequent maintenance and high production costs. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a planar slag discharge chute screen based on a composite wear-resistant layer.

[0006] This application provides a planar slag discharge chute screen based on a composite wear-resistant layer, including a main frame, and further comprising: Multiple connecting plates are installed on the inner wall of the main frame. The inner walls of the multiple connecting plates are respectively provided with I-beam main beam 1 and I-beam main beam 2. The I-beam main beam 1 and I-beam main beam 2 are installed on the inner wall of the angle steel installation by bolt 1. The connection between the I-beam main beam 1 and I-beam main beam 2 is fixed by bolt 2. The top surface and flange of the I-beam main beam 1 and I-beam main beam 2 are provided with high manganese steel plates. The adjustment mechanism, located on one side of the outer wall of the connecting plate, is used to adjust the position of the installed angle steel, thereby adjusting the gap between the first I-beam and the second I-beam.

[0007] Optionally, the adjustment mechanism includes a positioning seat installed on one side of the outer wall of the connecting plate, a positioning plate sliding on the outer wall of the positioning seat, and a locking block sliding inside the positioning seat.

[0008] Optionally, a spring is provided between one end of the locking block and the positioning seat, and a guide plate that can slide inside the positioning seat is installed on the outer wall of the locking block.

[0009] Optionally, one end of the spring is connected to one end of the locking block, and the other end is fixed inside the positioning seat.

[0010] Optionally, the positioning plate has multiple slots inside, and the positioning plate can slide inside the slots.

[0011] Optionally, a limiting plate is fixed on one side of the outer wall of the connecting plate, and a sliding groove for the limiting plate to slide is provided inside the main frame.

[0012] Optionally, the first I-beam and the second I-beam are designed in an alternating longitudinal and transverse pattern, and the first I-beam and the second I-beam are placed in a staggered vertical position.

[0013] Optionally, the I-beam main beam and the high-manganese steel plate are integrally welded together.

[0014] In summary, this application includes at least one of the following beneficial technical effects: This invention forms a composite wear-resistant layer by integrally welding a high-manganese steel plate onto the working surface of the I-beam main beam. It fully utilizes the characteristic that the surface hardness of high-manganese steel increases sharply under impact, effectively resisting the impact cutting and sliding wear of ore. This doubles the overall wear resistance of the screen and extends its service life several times compared to traditional screens, greatly reducing the frequency of replacement and maintenance costs.

[0015] Furthermore, a three-dimensional frame design with interlaced and staggered I-beam main beams is adopted, and double reinforcement with high-strength bolts and welding is used to form an extremely stable load-bearing structure. At the same time, the continuous plane composed of high-manganese steel plates eliminates the uneven structure of traditional screens, preventing large pieces of ore from getting stuck and allowing them to slide smoothly to the crushing point, facilitating direct operation of the crushing trolley, thereby significantly improving ore extraction efficiency and safety.

[0016] Finally, the integrated modular adjustment mechanism allows operators to quickly and accurately adjust the grid gap according to actual production needs, without having to replace the entire grid screen device for different screening particle size requirements. This optimizes the flexibility of the screening process, significantly reduces spare parts inventory and long-term operating costs, and results in significant overall economic benefits. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the planar slag discharge chute screen based on the composite wear-resistant layer of this utility model is provided; Figure 2 This is a structural schematic diagram of an I-beam main beam; Figure 3 This is a schematic diagram of the I-beam main beam structure; Figure 4 This is a schematic diagram of the positioning plate structure; Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle.

[0018] Attached reference numerals: 1. Main frame; 2. Connecting plate; 3. Installation angle steel; 4. I-beam main beam one; 5. Bolt one; 6. I-beam main beam two; 7. Bolt two; 8. High manganese steel plate; 9. Slide groove; 10. Limiting plate; 11. Positioning seat; 12. Positioning plate; 13. Slot; 14. Locking block; 15. Guide plate; 16. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-3 As shown, the planar slag discharge chute screen based on a composite wear-resistant layer proposed in this utility model includes a main frame 1. In one embodiment, the inner wall of the main frame 1 is provided with multiple connecting plates 2, and the inner walls of the multiple connecting plates 2 are respectively provided with I-beam main beam 1 4 and I-beam main beam 2 6. The I-beam main beam 1 4 and I-beam main beam 2 6 are installed on the inner wall of the mounting angle steel 3 by bolt 1 5. The connection between the I-beam main beam 1 4 and I-beam main beam 2 6 is connected and fixed by bolt 2 7. High manganese steel plates 8 are provided on the top surface and flange of the I-beam main beam 1 4 and I-beam main beam 2 6. Among them, the I-beam main beam 4 and the I-beam main beam 6 are designed in an interlaced longitudinal and transverse pattern, and the I-beam main beam 4 and the I-beam main beam 6 are placed in a staggered vertical position; the I-beam main beam 6 and the high manganese steel plate 8 are integrally welded together. The following is a detailed description of the chute screen: In this embodiment, when large pieces of ore fall from a height in the ore pass, the impact energy first acts on the high-manganese steel plates 8 laid on the top surface and flanges of the I-beam main beam 4 and the second I-beam main beam 6. The high-manganese steel plates 8 are integrally welded with the I-beam main beam 4 and the second I-beam main beam 6 to form a composite wear-resistant layer. At the moment of bearing a huge impact, the surface of the high-manganese steel plates 8 undergoes a work hardening effect, and its hardness increases sharply, thereby effectively resisting the chiseling and cutting wear of the ore. At the same time, the I-beam main beam 4 below, with its excellent toughness, efficiently absorbs and disperses the impact energy, ensuring the integrity of the overall structure under harsh working conditions. Qualified small pieces of ore then fall smoothly through the grid gaps determined by the layout of the main beams, completing the screening function.

[0021] like Figure 1 , Figure 4 and Figure 5 As shown, the chute screen also includes an adjustment mechanism disposed on one side of the outer wall of the connecting plate 2, which is used to adjust the position of the installation angle steel 3 to adjust the gap between the I-beam main beam 4 and the I-beam main beam 6; as one embodiment, the adjustment mechanism includes a positioning seat 11 disposed on one side of the outer wall of the connecting plate 2, a positioning plate 12 sliding on the outer wall of the positioning seat 11, and a locking block 14 sliding inside the positioning seat 11; A spring 16 is provided between one end of the locking block 14 and the positioning seat 11. A guide plate 15 that can slide inside the positioning seat 11 is installed on the outer wall of the locking block 14. One end of the spring 16 is connected to one end of the locking block 14, and the other end is fixed inside the positioning seat 11. Multiple slots 13 are opened inside the positioning plate 12, and the positioning plate 12 can slide inside the slots 13. A limit plate 10 is fixed on one side of the outer wall of the connecting plate 2, and a sliding groove 9 for the limit plate 10 to slide is opened inside the main frame 1. The adjustment mechanism is described in detail below: In this embodiment, the operator pulls the positioning plate 12 outward, which overcomes the elastic force of the spring 16 and drives the locking block 14 connected to the guide plate 15 to disengage from the slot 13 on the positioning seat 11. At this time, the entire assembly fixed to the connecting plate 2 is unlocked. Since the limiting plate 10 is constrained in the sliding groove 9 of the main frame 1, it can only slide smoothly along the predetermined trajectory. When it slides to the desired position, the positioning plate 12 is released, and the spring 16 pushes the locking block 14 to reset, so that it is locked into the new slot 13, thereby firmly locking the adjustment mechanism. The grid gap can be quickly and accurately adjusted according to the current block size requirements of the ore, without replacing the entire grid screen. This optimizes the screening efficiency and significantly reduces spare parts inventory and long-term operating costs.

[0022] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A planar slag discharge chute screen based on a composite wear-resistant layer, comprising a main frame (1), characterized in that, Also includes: Multiple connecting plates (2) are set on the inner wall of the main frame (1). The inner walls of the multiple connecting plates (2) are respectively provided with I-beam main beam one (4) and I-beam main beam two (6). The I-beam main beam one (4) and I-beam main beam two (6) are installed on the inner wall of the mounting angle steel (3) by bolt one (5). The connection between the I-beam main beam one (4) and I-beam main beam two (6) is fixed by bolt two (7). The top surface and flange of the I-beam main beam one (4) and I-beam main beam two (6) are provided with high manganese steel plates (8). The adjustment mechanism is located on one side of the outer wall of the connecting plate (2) and is used to adjust the position of the installed angle steel (3) to adjust the gap between the first I-beam (4) and the second I-beam (6).

2. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 1, characterized in that, The adjustment mechanism includes a positioning seat (11) installed on one side of the outer wall of the connecting plate (2), a positioning plate (12) sliding on the outer wall of the positioning seat (11), and a locking block (14) sliding inside the positioning seat (11).

3. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 2, characterized in that, A spring (16) is provided between one end of the locking block (14) and the positioning seat (11), and a guide plate (15) that can slide inside the positioning seat (11) is installed on the outer wall of the locking block (14).

4. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 3, characterized in that, One end of the spring (16) is connected to one end of the locking block (14), and the other end is fixed inside the positioning seat (11).

5. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 4, characterized in that, The positioning plate (12) has multiple slots (13) inside, and the positioning plate (12) can slide inside the slots (13).

6. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 1, characterized in that, A limiting plate (10) is fixed on one side of the outer wall of the connecting plate (2), and a sliding groove (9) is provided inside the main frame (1) for the limiting plate (10) to slide.

7. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 1, characterized in that, The I-beam main beam one (4) and the I-beam main beam two (6) are designed in an interlaced longitudinal and transverse pattern, and the I-beam main beam one (4) and the I-beam main beam two (6) are placed in a staggered vertical position.

8. The planar slag discharge chute screen based on a composite wear-resistant layer according to claim 1, characterized in that, The I-beam main beam (6) and the high manganese steel plate (8) are integrally welded together.

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