A device for removing oversized stones in the production of subbase material

Abstract

This utility model discloses a device for removing oversized stones in the production of bedding material, relating to the field of stone screening technology. A baffle plate is fixedly connected to both the front and rear sides of the upper surface of the oversized screen. Support frames are provided on both the front and rear sides of the oversized screen. A moving mechanism is provided at the right end of the oversized screen, and an angle adjustment mechanism is provided at the left end. The left end of the oversized screen is tilted downwards, and a cleaning screen is provided below the oversized screen. The moving mechanism, located on the right side of the oversized screen, simultaneously screens the stone while a rotary motor drives a rotating plate to rotate. Under the action of the rotating plate, the right end of a traction plate rotates around the connection between the rotating plate and the output end of the rotary motor, causing the oversized screen to slide left and right along a limiting slide, thus achieving dynamic screening. This effectively breaks up material accumulation and "material arching," preventing screen blockage, and is particularly suitable for materials with high moisture content or viscous texture.

Description

Technical Field

[0001] This utility model relates to the field of stone screening technology, and in particular to a device for removing oversized stones in the production of bedding material. Background Technology

[0002] Subbase material is a transitional material used in civil engineering between the foundation structure layer and the superstructure. It is widely used in roadbed filling, building foundation treatment, and seepage prevention systems in water conservancy projects. Its main functions are to uniformly transfer loads, regulate foundation deformation, improve drainage performance, and prevent soil frost heave. The physical and mechanical properties of subbase material directly affect the stability and durability of the engineering structure. Therefore, strict requirements are placed on indicators such as material gradation, particle size distribution, and mud content. Among these, the control of sand and gravel particle size is one of the core parameters. Typically, the maximum particle size must not exceed 1 / 3 of the structural layer thickness to avoid problems such as uneven porosity and insufficient compaction caused by oversized stones (i.e., coarse particles exceeding the design size).

[0003] In the production process of subbase materials, the removal of oversized stones is a crucial step. Traditional methods generally use inclined fixed screens for sieving, where the material slides down the screen surface by its own weight to achieve grading. However, such static screening devices have significant drawbacks. Material easily accumulates on the screen surface, forming "material arches" that clog the screen holes, requiring frequent shutdowns for cleaning. Furthermore, when screening materials with high moisture content or viscous components, it is easy to mistakenly reject qualified material.

[0004] Therefore, this application proposes a device for removing oversized stones in the production of subbase material to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a device for removing oversized stones in the production of bedding material, which solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for removing oversized stones in the production of bedding material, comprising an outer support frame, a guide hopper fixedly connected to the upper end of the outer support frame, an oversized screen disposed below the guide hopper, baffle plates fixedly connected to both the front and rear sides of the upper surface of the oversized screen, support frames disposed on both the front and rear sides of the oversized screen, the right ends of the opposite sides of the support frames being rotatably connected to the inner walls of the front and rear sides of the outer support frame, a moving mechanism disposed on the right end of the oversized screen, an angle adjustment mechanism disposed on the left end of the oversized screen, the left end of the oversized screen being inclined downwards, a cleaning screen disposed below the oversized screen, the cleaning screen being fixedly connected to the outer support frame, baffle plates fixedly connected to both the front and rear ends of the upper surface of the cleaning screen, the right end of the cleaning screen being inclined downwards.

[0007] Preferably, the adjacent sidewalls of the two front and rear baffles are provided with limiting slides, and the sides of the two baffles that are far apart from each other are fixedly connected to limiting slides. The end of the limiting slide that is far away from the baffle extends into the limiting slide, and the limiting slide is slidably connected to the limiting slide.

[0008] Preferably, the moving mechanism includes an auxiliary frame, which is fixed to the right side of the outer support frame. A rotating plate one and a rotating plate two are arranged inside the auxiliary frame. The rear end of rotating plate one is rotatably connected to the rear inner wall of the auxiliary frame via a connecting rod. A rotary motor is fixedly connected to the front end of the auxiliary frame. The output end of the rotary motor passes through the front wall of the auxiliary frame and is fixedly connected to the front wall of rotating plate two. A connecting frame is fixedly connected to the right side of the lower end of the oversized screen. A traction plate is arranged inside the connecting frame. The left ends of the front and rear side walls of the traction plate are rotatably connected to the front and rear inner walls of the connecting frame, respectively. The right end of the traction plate extends between rotating plate one and rotating plate two. The side of the front wall of rotating plate one away from the connection point between rotating plate one and the auxiliary frame is rotatably connected to the rear wall of the traction plate. The side of the rear wall of rotating plate two away from the connection point between rotating plate two and the output end of the rotary motor is rotatably connected to the front wall of the traction plate.

[0009] Preferably, the angle adjustment mechanism includes a support rod and a fixed plate. Limiting grooves are provided on the inner walls of both the front and rear sides of the outer support frame. The front and rear ends of the support rod are slidably connected to the outer support frame through the limiting grooves. The upper end of the support rod abuts against the lower end of the support frame. An angle adjustment motor is fixedly connected to the lower end of the fixed plate. An adjustment frame is provided below the support rod. The adjustment frame is U-shaped. The upper ends of both the front and rear side walls of the adjustment frame are fixedly connected to the lower end of the support rod. The output end of the angle adjustment motor passes through the fixed plate and is fixedly connected to an angle adjustment screw. The upper end of the angle adjustment screw passes through the lower side wall of the adjustment frame and is threadedly connected to the lower side wall of the adjustment frame.

[0010] Preferably, a guide plate is provided below the oversized screen, and the front and rear ends of the guide plate are fixedly connected to the adjacent side walls of the front and rear support frames, respectively. The guide plate is located above the angle adjustment mechanism, and the left end of the guide plate extends to the left side of the outer support frame.

[0011] Preferably, a protective plate is fixedly connected to the right end of the support rod, and the protective plate is located on the left side of the cleaning screen.

[0012] Compared with related technologies, the oversized stone removal device for subbase material production provided by this utility model has the following beneficial effects:

[0013] 1. This utility model provides a device for removing oversized stones in the production of bedding material. In this device, two baffle plates are set above the oversized screen. The baffle plates are slidably connected to the support frames on the front and rear sides through limiting slide plates and limiting slides. A moving mechanism is set on the right side of the oversized screen. While screening the stone, a rotary motor drives a rotating plate to rotate. Under the action of the rotating plate, the right end of the traction plate moves in a circular motion around the connection between the rotating plate and the output end of the rotary motor, thereby driving the oversized screen to slide in the left and right directions along the limiting slide, thus realizing dynamic screening, effectively breaking up material accumulation and "material arching" phenomenon, avoiding screen hole blockage, and is especially suitable for materials with high moisture content or stickiness.

[0014] 2. This utility model provides a device for removing oversized stones in the production of bedding material. The angle adjustment mechanism in this device can adjust the tilt angle of the oversized screen. This design can optimize the screening tilt angle in real time according to the material characteristics (such as particle size and moisture content), ensuring screening efficiency and accuracy under different working conditions, and reducing the leakage of oversized stones or the incorrect rejection of qualified materials. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0017] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0018] Figure 4 This is a three-dimensional structural diagram of the oversized screen of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the angle adjustment mechanism of this utility model.

[0020] In the diagram: 1. Outer support frame; 2. Guide hopper; 3. Support frame; 4. Oversized screen; 5. Baffle plate one; 6. Limiting slide; 7. Limiting slide plate; 8. Guide plate; 9. Rotating plate two; 10. Support rod; 11. Adjusting frame; 12. Fixing plate; 13. Angle adjusting motor; 14. Angle adjusting screw; 15. Protective plate; 16. Limiting slide groove; 17. Cleaning screen; 18. Baffle plate two; 19. Connecting frame; 20. Auxiliary frame; 21. Traction plate; 22. Rotating plate one; 23. Rotating motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides a technical solution: a device for removing oversized stones in the production of bedding material, including an outer support frame 1, a guide hopper 2 fixedly connected to the upper end of the outer support frame 1, an oversized screen 4 arranged below the guide hopper 2, baffle plates 5 fixedly connected to the front and rear sides of the upper surface of the oversized screen 4, support frames 3 arranged on the front and rear sides of the oversized screen 4, the right ends of the opposite sides of the front and rear support frames 3 being rotatably connected to the inner walls of the front and rear sides of the outer support frame 1, a moving mechanism arranged on the right end of the oversized screen 4, and a moving mechanism arranged on the left end of the oversized screen 4. An angle adjustment mechanism is provided. The left end of the oversized screen 4 is inclined downward. A cleaning screen 17 is provided below the oversized screen 4. The cleaning screen 17 is set to screen the qualified stones again and clean the smaller stones and dust. The cleaning screen 17 is fixedly connected to the outer support frame 1. Both the front and rear ends of the upper surface of the cleaning screen 17 are fixedly connected to the baffle plate 18. The right end of the cleaning screen 17 is inclined downward. The baffle plate 18 is set to prevent qualified stones from falling from the front and rear sides of the cleaning screen 17.

[0023] Limiting slides 6 are provided on the adjacent side walls of the two front and rear baffles 5. Limiting slide plates 7 are fixedly connected to the side of the two baffles 5 that are far away from each other. The end of the limiting slide plate 7 that is far away from the baffles 5 extends into the limiting slide 6. The limiting slide plate 7 is slidably connected to the limiting slide 6. The baffles 5 are designed to prevent stones from falling from the front and rear sides of the oversized screen 4 and affecting the screening of stones.

[0024] The moving mechanism includes an auxiliary frame 20, which is fixed to the right side of the outer support frame 1. A rotating plate 22 and a rotating plate 9 are arranged inside the auxiliary frame 20. The rear end of the rotating plate 22 is rotatably connected to the rear inner wall of the auxiliary frame 20 via a connecting rod. A rotary motor 23 is fixedly connected to the front end of the auxiliary frame 20. The output end of the rotary motor 23 passes through the front wall of the auxiliary frame 20 and is fixedly connected to the front wall of the rotating plate 9. A connecting frame 19 is fixedly connected to the right side of the lower end of the oversized screen 4. A traction plate 21 is arranged inside the connecting frame 19. The left ends of the front and rear side walls of the traction plate 21 are rotatably connected to the front and rear inner walls of the connecting frame 19, respectively. The right end of the traction plate 21 extends between the rotating plate 22 and the rotating plate 9. The front end of the rotating plate 22... The side of the wall away from the connection between the rotating plate 22 and the auxiliary frame 20 is rotatably connected to the rear side wall of the traction plate 21. The side of the rear side wall of the rotating plate 29 away from the connection between the rotating plate 29 and the output end of the rotating motor 23 is rotatably connected to the front side wall of the traction plate 21. The rotating motor 23 drives the rotating plate 29 to rotate. Under the action of the rotating plate 29, the right side of the traction plate 21 is driven to make a circular motion around the connection between the rotating plate 29 and the output end of the rotating motor 23. This causes the oversized screen 4 to slide along the limiting slide 6 in the left and right directions. At this time, the material to be screened is introduced from the guide hopper 2, thereby realizing dynamic screening. The movement of the oversized screen 4 effectively breaks the material accumulation and "material arching" phenomenon, avoids screen hole blockage, and is especially suitable for high moisture content or viscous materials.

[0025] The angle adjustment mechanism includes a support rod 10 and a fixed plate 12. Limiting grooves 16 are provided on the inner walls of both the front and rear sides of the outer support frame 1. The front and rear ends of the support rod 10 are slidably connected to the outer support frame 1 via the limiting grooves 16. The upper end of the support rod 10 abuts against the lower end of the support frame 3. An angle adjustment motor 13 is fixedly connected to the lower end of the fixed plate 12. An adjustment frame 11 is provided below the support rod 10. The adjustment frame 11 is U-shaped, and the upper ends of both the front and rear sides of the adjustment frame 11 are fixedly connected to the lower end of the support rod 10. The output end of the angle adjustment motor 13 passes through the fixed plate 12 and is fixedly connected to an angle adjustment screw 14. One end of the angle adjustment screw 14 passes through the adjustment frame 11. The lower side wall of the support rod 10 is threadedly connected to the lower side wall of the adjustment frame 11. In use, the angle adjustment motor 13 drives the angle adjustment screw 14 to rotate. The angle adjustment screw 14 cooperates with the lower side wall of the adjustment frame 11 to realize the lifting and lowering of the support rod 10. When the support rod 10 moves upward, the left end of the oversized screen 4 is lifted upward, thereby reducing the tilt angle of the oversized screen 4. When the support rod 10 moves downward, the left end of the oversized screen 4 moves downward, thereby increasing the tilt angle of the oversized screen 4. This design can optimize the screening tilt angle in real time according to the material characteristics such as particle size and humidity, ensuring screening efficiency and accuracy under different working conditions, and reducing the leakage of oversized stones or the incorrect rejection of qualified materials.

[0026] A guide plate 8 is provided below the oversized screen 4. The front and rear ends of the guide plate 8 are fixedly connected to the adjacent side walls of the front and rear support frames 3, respectively. The guide plate 8 is located above the angle adjustment mechanism, and the left end of the guide plate 8 extends to the left side of the outer support frame 1.

[0027] A protective plate 15 is fixedly connected to the right end of the support rod 10. The protective plate 15 is located on the left side of the cleaning screen 17. The cooperation between the protective plate 15 and the guide plate 8 effectively prevents the sand and gravel falling from the oversized screen 4 from colliding with the angle adjustment motor 13 and the angle adjustment screw 14.

[0028] Working principle: During use, the inclination angle of the oversized screen 4 is adjusted according to the material characteristics such as particle size and humidity. During adjustment, the angle adjustment motor 13 drives the angle adjustment screw 14 to rotate. The angle adjustment screw 14 cooperates with the lower side wall of the adjustment frame 11 to realize the raising and lowering of the support rod 10. When the support rod 10 moves upward, the left end of the oversized screen 4 is lifted upward, thereby reducing the inclination angle of the oversized screen 4. When the support rod 10 moves downward, the left end of the oversized screen 4 moves downward, thereby increasing the inclination angle of the oversized screen 4. This design can optimize the screening inclination angle in real time according to the material characteristics such as particle size and humidity, ensuring screening efficiency and accuracy under different working conditions, and reducing the leakage of oversized stones or the incorrect rejection of qualified materials. The rotating plate 29 is driven to rotate by the rotating motor 23. Under the action of the rotating plate 29, the right end of the traction plate 21 moves in a circular motion around the connection between the rotating plate 29 and the output end of the rotating motor 23. This causes the oversized screen 4 to slide along the limiting slide 6 in the left and right directions. At this time, the material to be screened is introduced from the guide hopper 2, thereby realizing dynamic screening. The movement of the oversized screen 4 effectively breaks up material accumulation and "material arching" phenomenon, and avoids screen hole blockage. It is especially suitable for materials with high moisture content or stickiness.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for removing oversized stones in the production of subbase material, comprising an outer support frame (1), characterized in that: The upper end of the outer support frame (1) is fixedly connected to a guide hopper (2), and an oversized screen (4) is provided below the guide hopper (2). Both the front and rear sides of the upper surface of the oversized screen (4) are fixedly connected to baffle plates (5). Both the front and rear sides of the oversized screen (4) are provided with support frames (3). The right side of the support frames (3) on the opposite side of the front and rear sides are rotatably connected to the inner walls of the front and rear sides of the outer support frame (1). The right side of the oversized screen (4) is provided with a moving mechanism, and the left side of the oversized screen (4) is provided with an angle adjustment mechanism. The left side of the oversized screen (4) is inclined downward.

2. The device for removing oversized stones in the production of bedding material according to claim 1, characterized in that: A cleaning screen (17) is provided below the oversized screen (4). The cleaning screen (17) is fixedly connected to the outer support frame (1). Both the front and rear ends of the upper surface of the cleaning screen (17) are fixedly connected to baffle plates (18). The right end of the cleaning screen (17) is inclined downward.

3. The device for removing oversized stones in the production of bedding material according to claim 1, characterized in that: Limiting slides (6) are provided on the adjacent side walls of the two front and rear baffles (5). Limiting slides (7) are fixedly connected to the side of the two baffles (5) that are far apart from each other. The end of the limiting slide (7) that is far away from the baffle (5) extends into the limiting slide (6). The limiting slide (7) is slidably connected to the limiting slide (6).

4. The device for removing oversized stones in the production of bedding material according to claim 1, characterized in that: The moving mechanism includes an auxiliary frame (20), which is fixed to the right side of the outer support frame (1). A rotating plate one (22) and a rotating plate two (9) are provided on the inner side of the auxiliary frame (20). The rear end of the rotating plate one (22) is rotatably connected to the rear inner wall of the auxiliary frame (20) through a connecting rod. A rotary motor (23) is fixedly connected to the front end of the auxiliary frame (20). The output end of the rotary motor (23) passes through the front wall of the auxiliary frame (20) and is fixedly connected to the front wall of the rotating plate two (9). A connecting frame (19) is fixedly connected to the right side of the lower end of the oversized screen (4). A traction plate (21) is provided inside the connecting frame (19). The left ends of the front and rear side walls of the traction plate (21) are rotatably connected to the front and rear side inner walls of the connecting frame (19), respectively. The right end of the traction plate (21) extends between the rotating plate one (22) and the rotating plate two (9). The side of the front side wall of the rotating plate one (22) away from the connection between the rotating plate one (22) and the auxiliary frame (20) is rotatably connected to the rear side wall of the traction plate (21). The side of the rear side wall of the rotating plate two (9) away from the connection between the rotating plate two (9) and the output end of the rotating motor (23) is rotatably connected to the front side wall of the traction plate (21).

5. The device for removing oversized stones in the production of bedding material according to claim 1, characterized in that: The angle adjustment mechanism includes a support rod (10) and a fixed plate (12). Limiting grooves (16) are provided on the inner walls of the front and rear sides of the outer support frame (1). The front and rear ends of the support rod (10) are slidably connected to the outer support frame (1) through the limiting grooves (16). The upper end of the support rod (10) abuts against the lower end of the support frame (3). An angle adjustment motor (13) is fixedly connected to the lower end of the fixed plate (12). An adjustment frame (11) is provided below the support rod (10). The upper ends of the front and rear sides of the adjustment frame (11) are fixedly connected to the lower end of the support rod (10). The output end of the angle adjustment motor (13) passes through the fixed plate (12) and is fixedly connected to an angle adjustment screw (14). The upper end of the angle adjustment screw (14) passes through the lower side wall of the adjustment frame (11) and is threadedly connected to the lower side wall of the adjustment frame (11).

6. The device for removing oversized stones in the production of bedding material according to claim 5, characterized in that: The adjustment frame (11) is U-shaped.

7. The device for removing oversized stones in the production of bedding material according to claim 1, characterized in that: A guide plate (8) is provided below the oversized screen (4). The front and rear ends of the guide plate (8) are fixedly connected to the adjacent side walls of the front and rear support frames (3), respectively. The guide plate (8) is located above the angle adjustment mechanism. The left end of the guide plate (8) extends to the left side of the outer support frame (1).

8. The device for removing oversized stones in the production of bedding material according to claim 5, characterized in that: A protective plate (15) is fixedly connected to the right end of the support rod (10), and the protective plate (15) is located on the left side of the cleaning screen (17).

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