A concrete aggregate crusher

Abstract

The utility model relates to concrete production and processing technical field especially relates to a concrete aggregate crusher. Its solved the traditional crusher cannot according to the material particle size or flow dynamic regulation, leading to the large particle material concentrated impact crushing roller local area, cause the uneven wear of roll surface technical problem, the utility model discloses the movable plate of tilting adjustable replacement fixed deflector, through adjusting lever and damping spring ring cooperation, realize the stepless adjustment of feeding angle, match the crushing demand of aggregate particle under different working conditions, through the screen structure of deflector, realize the screening crushing treatment of larger aggregate and smaller aggregate, the larger aggregate of upper part is guided under the structure of deflector, and flows to the middle part of crushing roller and carries out the crushing, and the fine particle directly falls to the shunt frame board through the screen hole, and the connecting frame and shunt frame board are arranged in the lower part of screen, form multistage shunt path, and the triangular convex plate of shunt frame board and shunt port design make the fine material move to the both ends of crushing roller and carry out the crushing.

Description

Technical Field

[0001] This utility model relates to the field of concrete production and processing technology, and in particular to a concrete aggregate crusher. Background Technology

[0002] In the field of concrete aggregate production, crushers are one of the core pieces of equipment, and the rationality of their feeding structure directly affects crushing efficiency, equipment stability, and the lifespan of vulnerable parts. Traditional aggregate crushers typically use a fixed guide structure for the feed inlet, allowing materials to enter the crushing chamber directly in a free-fall manner. This results in poor feed uniformity, and the fixed guide plate cannot be dynamically adjusted according to the material particle size or flow rate. Consequently, large particles concentrate on impacting localized areas of the crushing rollers, causing uneven wear on the roller surface (excessive wear in some areas and underutilization in others).

[0003] Therefore, there is an urgent need for a concrete aggregate crusher that can adjust its working state according to changes in concrete aggregate flow rate or particle size to improve crushing efficiency. Utility Model Content

[0004] Therefore, to address the aforementioned problems, this utility model proposes a concrete aggregate crusher. It solves the technical problem that traditional crushers cannot dynamically adjust according to material particle size or flow rate, leading to large particles concentrating on impacting localized areas of the crushing rollers and causing uneven wear on the roller surface.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a main body of equipment, a feed inlet located on the upper part of the front surface of the main body of equipment, a crushing roller located inside the main body of equipment, and an aggregate guiding structure located inside the feed inlet. The aggregate guiding structure is inclined inward towards the feed inlet. The aggregate guiding structure includes a movable plate installed in the upper part of the feed inlet. A limiting movable roller is connected to one end of the movable plate near its outer side. An adjusting rod is provided on the upper part of the movable plate, and its end passes through the main body of equipment and is exposed to the air. A shock-absorbing spring ring is sleeved on the outside of the adjusting rod. A guide plate is provided in the lower part of the feed inlet at a position corresponding to the movable plate. A connecting frame is connected through the lower surface of the guide plate, and a diversion frame plate is connected through the lower surface of the connecting frame.

[0006] Furthermore, the movable plate has a horizontally arranged rectangular end on the side near the outside of the feed inlet, the width of which matches the inlet width of the feed inlet, while the movable plate has a tapered inclined end on the side near the crushing roller inside the equipment, the width of which gradually narrows towards the crushing roller, forming a narrow side parallel to the rectangular end.

[0007] Furthermore, the upper surface of the guide plate is a screen structure and is installed by a snap-fit ​​method, and the lower part of the guide plate is set in an open shape and is connected to the connecting frame through it.

[0008] Furthermore, the upper surface of the guide plate is equipped with detachable guide protrusions. Furthermore, a triangular protrusion is provided in the middle of the surface of the portion of the diversion frame plate near the crushing roller. The side of the diversion frame plate with the triangular protrusion is open, and a diversion port with two openings is formed with the triangular protrusion as the center.

[0009] Furthermore, both sides of the movable plate are provided with limiting movable rollers, and are connected to the inner wall of the main body of the equipment through the limiting movable rollers.

[0010] Furthermore, a universal joint is provided at the connection between the adjusting rod and the movable plate.

[0011] By adopting the aforementioned technical solution, the beneficial effects of this utility model are: This invention replaces the fixed guide plate with an adjustable movable plate, and achieves stepless adjustment of the feed angle through the cooperation of the adjusting rod and the shock-absorbing spring ring, so as to match the crushing requirements of aggregate particles under different working conditions.

[0012] The guide plate uses a screen structure to achieve screening and crushing of larger and smaller aggregates. The larger aggregates at the top are guided by the structure of the guide plate to flow to the middle of the crushing roller for crushing, while the fine particles fall directly to the diversion frame plate through the screen holes. The lower part of the screen is equipped with a connecting frame and the diversion frame plate to form a multi-stage diversion path. The triangular protrusions and diversion ports of the diversion frame plate allow the finer materials to move to both ends of the crushing roller for crushing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the aggregate guiding structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the aggregate guiding structure of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the guide plate and connecting frame of this utility model; In the diagram: Equipment body-1, feed inlet-2, crushing roller-3, aggregate guiding structure-4, movable plate-41, limiting movable roller-42, adjusting rod-43, shock-absorbing spring ring-44, guide plate-45, connecting frame-46, diversion frame plate-47, guide ridge-451, triangular ridge plate-471. Detailed Implementation

[0014] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0015] refer to Figures 1-4This embodiment provides a concrete aggregate crusher, comprising a main body 1, a feed inlet 2 located on the upper part of the front surface of the main body 1, a crushing roller 3 located inside the main body 1, and an aggregate guiding structure 4 located inside the feed inlet 2. The aggregate guiding structure 4 is inclined inward towards the feed inlet 2. The aggregate guiding structure 4 includes a movable plate 41 installed in the upper part of the feed inlet 2. A limiting movable roller 42 is connected to one end of the movable plate 41 near the outside. An adjusting rod 43 is provided on the upper part of the movable plate 41, with its end passing through the main body 1 and exposed to the air. A shock-absorbing spring ring 44 is sleeved on the outside of the adjusting rod 43. A guide plate 45 is provided in the lower part of the feed inlet 2 at a position corresponding to the movable plate 41. A connecting frame 46 is connected through the lower surface of the guide plate 45, and a diversion frame plate 47 is connected through the lower surface of the connecting frame 46.

[0016] The movable plate 41 has a horizontally set rectangular end on the side near the outside of the feed inlet 2. The width of the rectangular end matches the inlet width of the feed inlet 2. The movable plate 41 has a tapered inclined end on the side near the crushing roller 3 inside the equipment. The width of this end gradually narrows towards the crushing roller 3, forming a narrow side parallel to the rectangular end.

[0017] The movable plate 41 is connected to the inner wall of the main body 1 of the equipment via the limiting movable roller 42.

[0018] The movable plate 41 is embedded at both ends in the C-shaped track (material: Q345B steel plate) of the inner wall of the equipment, and is slidably connected by the limiting movable roller 42 (diameter φ80mm, material: chromium molybdenum alloy steel), ensuring that the movable plate can only be tilted along the track.

[0019] The tilt angle adjustment range of the movable plate 41 is set to 15°~45°, corresponding to the stepless matching of the gap (10~50mm) of the crushing roller 3.

[0020] A universal joint (model: SWC180) is provided at the connection between the adjusting rod 43 and the movable plate 41. The universal joint allows the adjusting rod to swing freely within a range of ±10°, avoiding jamming due to angular deviation.

[0021] It should be noted that the end of the adjusting rod 43 extends to the outside of the equipment. It can be adjusted by using an adjusting handle or by setting up a drive device, using a stepper motor (model: 86HS118) in conjunction with a worm gear reducer (reduction ratio 1:30), and automatically adjusting the angle through a PLC controller (Siemens S7-200). This is a conventional control group in this field, and as long as it can achieve the adjustment of the adjusting rod 43, it does not affect the overall performance.

[0022] The upper surface of the guide plate 45 is a screen structure and is installed by a snap-fit. The lower part of the guide plate 45 is open and is connected to the connecting frame 46. Specifically, the guide plate 45 is made of 3mm thick stainless steel plate and is stamped. The screen aperture is 5mm (diamond hole). It is fixed to the inner wall of the equipment by snap-fit ​​(material: PA66 nylon) for easy and quick replacement. The screen area ratio is set to 65% to ensure that the screening rate of <5mm particles is >85%.

[0023] The upper surface of the guide plate 45 is equipped with a movable and detachable guide strip 451, which, in conjunction with the movement of larger aggregates on the guide plate, avoids the traditional equipment where aggregates concentrate and rush into the equipment for crushing. Specifically, the guide strip 451 and the movable plate 41 are kept at a distance of 30mm to avoid material accumulation.

[0024] The portion of the diversion frame plate 47 near the crushing roller 3 has a triangular protrusion 471 in the middle of its surface. The side of the diversion frame plate 47 with the triangular protrusion 471 is open, and a diversion port 472 with two openings is formed with the triangular protrusion 471 as the center.

[0025] It should be noted that the diversion frame plate 47 is fixed to the bottom of the equipment with bolts (M12×50, grade 8.8), and is made of NM400 wear-resistant steel plate with a thickness of 20mm. The triangular convex plate 471 is an equilateral triangle structure (side length 150mm, height 30mm), integrally formed with the diversion frame plate 47, and has a wear-resistant layer (hardness HRC55) welded on the surface. The width ratio of the diversion port 472 is 1:1.5, and the opening edge is rounded (R5mm) to reduce material jamming.

[0026] The center line of the triangular convex plate 471 is aligned with the center line of the crushing roller 3 to ensure symmetrical material distribution.

[0027] The opening width of the diversion port 472 is set to 1 / 3 of the length of the crushing roller to prevent material overflow.

[0028] The working principle of this utility model is as follows: When the material enters through the feed inlet 2, it first contacts the movable plate 41. By rotating the adjustment handle at the end of the adjustment rod 43, the movable plate 41 connected to the universal shaft is driven to steplessly adjust the tilt angle within the range of 15° to 45°. When large-diameter materials enter, the narrow side width of the constricted end of the movable plate 41 is 1.2 times the distance between the crushing rollers, which restricts the material flow width and avoids local overload. Small-diameter materials have their falling speed reduced by a gentler angle. When the material slides to the guide plate 45, the screen structure pre-screens the material. Fine particles pass directly through the screen holes and enter the undersize channel of the diversion frame plate 47 through the connecting frame 46, avoiding repeated crushing in the crushing chamber. With the guide plate 45 having a constricted trapezoidal structure at one end facing the crushing roller 3, larger aggregates flow on the guide plate 45 to the middle of the crushing roller 3 for crushing.

[0029] The aggregate falling into the diversion frame plate 47 flows out through the "eight"-shaped diversion port 472 formed by the triangular protrusion plate 471 and is evenly distributed to both sides of the crushing roller 3 for crushing.

[0030] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A concrete aggregate crusher, comprising a main body (1), a feed inlet (2) located on the upper part of the front surface of the main body (1), a crushing roller (3) located inside the main body (1), and an aggregate guiding structure (4) located inside the feed inlet (2), wherein the aggregate guiding structure (4) is inclined inward towards the feed inlet (2), characterized in that, The aggregate guiding structure (4) includes a movable plate (41) installed in the upper part of the feed inlet (2). The movable plate (41) is connected to a limiting movable roller (42) at one end near the outside. An adjusting rod (43) is provided on the upper part of the movable plate (41) and its end passes through the main body of the equipment (1) and is exposed to the air. A shock-absorbing spring ring (44) is sleeved on the outside of the adjusting rod (43). A guide plate (45) is provided in the lower part of the feed inlet (2) at a position corresponding to the movable plate (41). A connecting frame (46) is connected through the lower surface of the guide plate (45). A diversion frame plate (47) is connected through the lower surface of the connecting frame (46).

2. The concrete aggregate crusher of claim 1, wherein: The movable plate (41) has a horizontally arranged rectangular end on the side near the outside of the feed inlet (2), the width of which matches the inlet width of the feed inlet (2), while the movable plate (41) has a tapered inclined end on the side near the crushing roller (3) inside the equipment, the width of which gradually narrows towards the crushing roller (3), forming a narrow side parallel to the rectangular end.

3. The concrete aggregate crusher of claim 1, wherein: The upper surface of the guide plate (45) is a screen structure and is installed by a snap-fit ​​method. The lower part of the guide plate (45) is set in an open shape and is connected to the connecting frame (46).

4. The concrete aggregate crusher according to claim 3, characterized in that: The upper surface of the guide plate (45) is equipped with a movable and detachable guide protrusion (451).

5. The concrete aggregate crusher of claim 1, wherein: The part of the diversion frame plate (47) near the crushing roller (3) has a triangular protrusion plate (471) in the middle of its surface. The side of the diversion frame plate (47) with the triangular protrusion plate (471) is open, and a diversion port (472) with two openings is formed with the triangular protrusion plate (471) as the center.

6. The concrete aggregate crusher of claim 1, wherein: Both sides of the movable plate (41) are provided with limiting movable rollers (42), and are connected to the inner wall of the main body (1) of the equipment through the limiting movable rollers (42).

7. The concrete aggregate crusher of claim 1, wherein: A universal joint is provided at the connection between the adjusting rod (43) and the movable plate (41).

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