A coarse-grained asphalt concrete unloading device
Patent Information
- Application Number
- CN202522399767.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-12
AI Technical Summary
[0003]本实用新型的目的在于至少解决现有技术中存在的技术问题之一，提供一种粗粒式沥青混凝土卸料装置，能够解决现有的卸料装置，粗粒式沥青混凝土落入溜槽后，因槽体倾斜且无缓速结构，粗骨料因惯性冲力大在直溜槽中速度逐渐加快，先冲至溜槽末端，撞击罐车底部后堆积在罐内下层，较细骨料则因粘性附着在槽壁缓慢滑落，落入罐内上层，最终罐车内物料呈现下粗上细的分层状态，导致沥青混凝土的强度与抗裂性下降，影响产品质量的问题
（1）、该粗粒式沥青混凝土卸料装置，通过防离析装置的设置，溜槽角度调整完成后，开启卸料通道并启动防离析装置，打开料斗表面的卸料阀，料斗内预搅拌后的松散沥青混凝土在自身重力作用下，经卸料阀流入溜槽内部，流经三级阶梯，减缓骨料流速，同时启动第二电机，第二电机输出端带动溜槽内部的旋转轴转动，旋转轴表面的旋转板随之一同转动，旋转板底部的第二搅拌杆同步旋转，第二搅拌杆在溜槽内转动时，一方面对进入溜槽的物料进行二次搅拌，混合粗细骨料，另一方面通过旋转推力推动物料沿溜槽内壁向下滑动，避免骨料在溜槽底部堆积堵塞，骨料在流经三级阶梯时，物料下滑时会先撞击第一级阶梯的平面，速度减缓，再撞击第二、三级阶梯的平面速度进一步减缓，强制降低物料整体流速，削弱粗骨料的惯性优势，缩小粗细料的速度差，防止罐车内物料呈现下粗上细的分层状态，避免了沥青混凝土的强度与抗裂性下降。
Smart Images
Figure CN224783314U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of unloading devices, and in particular to a coarse-grained asphalt concrete unloading device. Background Technology
[0002] In the asphalt concrete production industry, coarse-grained asphalt concrete is the core raw material for road base construction. Currently, simple steel straight chutes are commonly used as unloading devices in the unloading process. The device has a simple structure and is mainly composed of an inclined steel trough. One end of the trough is connected to the discharge port of the finished product transfer warehouse, and the other end extends to the top of the tank opening of the transport tanker. The coarse-grained asphalt concrete slides down the inclined surface of the trough under its own weight and finally falls into the tanker to complete the unloading. However, in existing unloading devices, when coarse-grained asphalt concrete falls into the chute, the chute is inclined and lacks a slowing structure. Due to the large inertial impact force, the coarse aggregate gradually accelerates in the straight chute, rushing to the end of the chute, impacting the bottom of the tanker, and accumulating in the lower layer inside the tank. The finer aggregate, due to its adhesiveness, adheres to the chute wall and slowly slides down, falling into the upper layer inside the tank. Ultimately, the material inside the tanker is in a stratified state of coarse at the bottom and fine at the top, which leads to a decrease in the strength and crack resistance of the asphalt concrete and affects product quality. Therefore, an asphalt concrete unloading device with a slowing structure is needed. Utility Model Content
[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a coarse-grained asphalt concrete unloading device. This device can solve the problem that in existing unloading devices, after the coarse-grained asphalt concrete falls into the chute, due to the inclination of the chute and the lack of a slowing structure, the coarse aggregate gradually accelerates in the straight chute due to its large inertial impact force, first rushing to the end of the chute, impacting the bottom of the tanker and accumulating in the lower layer inside the tank, while the finer aggregate adheres to the chute wall due to its stickiness and slowly slides down into the upper layer inside the tank. In the end, the material in the tanker presents a layered state of coarse at the bottom and fine at the top, which leads to a decrease in the strength and crack resistance of the asphalt concrete and affects the product quality.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric push rod is fixedly connected to the bottom of the mounting plate, four support legs are fixedly connected to the surface of the mounting plate, a hopper is fixedly connected to the surface of the four support legs, a feed inlet is opened on the surface of the hopper, a discharge valve is fixedly connected to the surface of the hopper, a motor is fixedly connected to the top of the hopper, a stirring rod is rotatably connected inside the hopper, stirring blades are fixedly connected to the surface of the stirring rod, a fixing block is fixedly connected to the bottom of the hopper, a rotating shaft is rotatably connected to the surface of the fixing block, a chute is fixedly connected to the surface of the rotating shaft, and an anti-segregation device is installed inside the chute.
[0005] Preferably, the output end of the motor extends rotatably into the interior of the hopper and is fixedly connected to the stirring rod.
[0006] Preferably, a splash guard is fixedly connected to the top of the chute, and a second motor is fixedly connected to the top of the splash guard.
[0007] Preferably, the anti-segregation device includes a slowing structure, which is fixedly connected inside the chute. A rotating shaft is fixedly connected inside the chute. The output end of the second motor extends into the chute and is fixedly connected to the rotating shaft. A rotating plate is fixedly connected to the surface of the rotating shaft, and a second stirring rod is fixedly connected to the bottom of the rotating plate.
[0008] Preferably, the output end of the electric push rod passes through the mounting plate and is fixedly connected to the chute.
[0009] Preferably, the mounting plate is U-shaped, with the bottom of the chute in contact with the surface of the mounting plate.
[0010] Preferably, the slowing structure can be a three-stage stepped structure.
[0011] Preferably, the slowing structure can be a honeycomb structure.
[0012] Preferably, the coverage width of the splash guard is the same as the top width of the chute.
[0013] Preferably, there are multiple second stirring rods, which are evenly distributed at the bottom of the rotating plate, and the rotation trajectory of the second stirring rods covers the outlet area of the slow-moving structure inside the chute.
[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) This coarse-grained asphalt concrete unloading device, through the setting of the anti-segregation device, after the chute angle is adjusted, opens the unloading channel and starts the anti-segregation device, opens the unloading valve on the surface of the hopper, and the pre-mixed loose asphalt concrete in the hopper flows into the chute through the unloading valve under its own gravity, flows through three steps, slows down the aggregate flow rate, and at the same time starts the second motor. The output end of the second motor drives the rotating shaft inside the chute to rotate, and the rotating plate on the surface of the rotating shaft rotates together. The second stirring rod at the bottom of the rotating plate rotates synchronously. When the second stirring rod rotates in the chute... On the one hand, the material entering the chute is agitated a second time to mix coarse and fine aggregates. On the other hand, the rotational thrust pushes the material down the inner wall of the chute to prevent aggregates from accumulating and clogging at the bottom of the chute. When the aggregates flow through the three-stage steps, they will first hit the plane of the first stage, slowing down. Then they will hit the plane of the second and third stages, further slowing down the speed. This forces a reduction in the overall flow velocity of the material, weakens the inertial advantage of the coarse aggregates, reduces the speed difference between coarse and fine aggregates, and prevents the material in the tank truck from being in a layered state of coarse at the bottom and fine at the top, thus avoiding a decrease in the strength and crack resistance of the asphalt concrete. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the electric push rod structure of this utility model; Figure 4 This is a schematic diagram of the deceleration structure of this utility model; Figure 5 This is a schematic diagram of the deceleration structure of this utility model.
[0016] Reference numerals: 1. Hopper; 2. Support leg; 3. Motor; 4. Fixing block; 5. Discharge valve; 6. Rotating shaft; 7. Mounting plate; 8. Splash guard; 9. Chute; 10. Second motor; 11. Stirring rod; 12. Stirring blade; 13. Feed inlet; 14. Slowing structure; 15. Rotating plate; 16. Rotating shaft; 17. Second stirring rod; 18. Electric push rod. Detailed Implementation
[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.
[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0021] Hopper 1: Hopper 1 is a storage and pre-mixing container for asphalt concrete. It has a feed inlet 13 on its surface, a rotating mixing rod 11 inside, and a fixed block 4 and a chute 9 connected at the bottom. It is used to receive and temporarily store coarse-grained asphalt concrete and to pre-mix the material. Support leg 2: It is fixedly connected to the surface of the mounting plate 7 and supports the hopper 1, so that the hopper 1 maintains a stable installation height and horizontal state, and ensures that the unloading operation is carried out smoothly; Motor 3: Motor 3 is fixedly connected to the top of hopper 1, and its output end extends into the inside of hopper 1 and is fixedly connected to the stirring rod 11. It provides power for the rotation of the stirring rod 11 and drives the stirring blades 12 to pre-mix the asphalt concrete in hopper 1. Fixed block 4: Fixed block 4 is fixedly connected to the bottom of hopper 1. The surface of fixed block 4 is rotatably connected to shaft 6 to support shaft 6 and provide a fulcrum for rotation of chute 9, ensuring that chute 9 can stably adjust its tilt angle around shaft 6. Discharge valve 5: Discharge valve 5 is fixedly connected to the surface of hopper 1 and is the material channel switch between hopper 1 and chute 9. By opening or closing, it controls whether the pre-mixed asphalt concrete in hopper 1 enters chute 9. Rotating shaft 6: Rotating shaft 6 is rotatably connected between fixed block 4 and chute 9, serving as the rotating shaft of chute 9, allowing chute 9 to rotate flexibly around it, and cooperating with electric push rod 18 to adjust the tilt angle of chute 9; Mounting plate 7: Mounting plate 7 is the basic load-bearing component of the entire unloading device. Four support legs 2 are fixedly connected to the surface, and electric push rod 18 is fixedly connected to the bottom, providing a stable mounting carrier and support foundation for the support legs 2 and electric push rod 18. Splash guard 8: Splash guard 8 is fixedly connected to the top of chute 9 and is used to prevent asphalt concrete from splashing due to excessive flow rate or vibration when the material flows through chute 9, so as to avoid material waste and environmental pollution. Chute 9: Chute 9 is the conveying channel for asphalt concrete. It is connected to the fixed block 4 at the bottom of hopper 1 via a rotating shaft 6. It is equipped with a slowing structure 14 and an anti-segregation device to guide the material discharged from hopper 1 to the target unloading position, while realizing secondary mixing and flow rate control of the material. Second motor 10: The second motor 10 is fixedly connected to the top of the splash shield 8, and its output end extends into the inside of the chute 9 and is fixedly connected to the rotating shaft 16 to provide power for the rotation of the rotating shaft 16 and drive the anti-segregation device in the chute 9 to operate. Stirring rod 11: The stirring rod 11 is rotatably connected inside the hopper 1. One end is fixedly connected to the output end of the motor 3, and the stirring blade 12 is fixedly connected to the surface. It rotates under the drive of the motor 3, which drives the stirring blade 12 to pre-stir the asphalt concrete in the hopper 1. Mixing blade 12: The mixing blade 12 is fixedly connected to the surface of the mixing rod 11 and rotates synchronously with the mixing rod 11. It cooperates with the inner wall of the hopper 1 to break up the coarse particles that agglomerate in the asphalt concrete, so as to achieve full pre-mixing of the material and avoid particle clumping. Inlet 13: Inlet 13 is located on the surface of hopper 1 and is the entrance for coarse-grained asphalt concrete to be fed into hopper 1, making it convenient for workers or conveying equipment to guide the material to be unloaded into hopper 1. Slowing structure 14: The slowing structure 14 is fixedly connected inside the chute 9 to slow down the flow rate of the material flowing through the chute 9, reduce the speed difference between coarse and fine materials, and prevent the material from stratifying into a state where the bottom is coarse and the top is fine. Rotating plate 15: The rotating plate 15 is fixedly connected to the surface of the rotating shaft 16, and the bottom is fixedly connected to the second stirring rod 17. It rotates synchronously with the rotating shaft 16, and transmits the rotational power of the rotating shaft 16 to the second stirring rod 17 to drive the second stirring rod 17 to perform secondary stirring operation. Rotary shaft 16: Rotary shaft 16 is rotatably connected inside the chute 9. One end is fixedly connected to the output end of the second motor 10, and a rotating plate 15 is fixedly connected to its surface. It rotates under the drive of the second motor 10, causing the rotating plate 15 and the second stirring rod 17 to move synchronously. Second stirring rod 17: The second stirring rod 17 is fixedly connected to the bottom of the rotating plate 15 and rotates synchronously with the rotating plate 15. On the one hand, it performs secondary stirring on the material entering the chute 9 to mix coarse and fine aggregates; on the other hand, it pushes the material down the inner wall of the chute 9 through rotational thrust to avoid the aggregates from accumulating and clogging at the bottom of the chute 9. Electric push rod 18: The electric push rod 18 is fixedly connected to the bottom of the mounting plate 7. The output end passes through the mounting plate 7 and is fixedly connected to the chute 9. By extending upward or retracting downward at the output end, the chute 9 is pushed to rotate around the rotating shaft 6, thereby adjusting the tilt angle of the chute 9 and ensuring that the outlet of the chute 9 is accurately aligned with the target unloading position.
[0022] Example 1: like Figure 1-4As shown, the slow-moving structure 14 can be a three-stage stepped structure. When coarse-grained asphalt concrete is to be unloaded, the material must first be introduced into the hopper 1 and pre-mixed. The coarse-grained asphalt concrete is then fed into the hopper 1 through the feed inlet 13 on the surface of the hopper 1. The motor 3 is immediately started, and the output end of the motor 3 rotates and extends into the hopper 1, driving the mixing rod 11 inside the hopper 1 to rotate synchronously. The mixing blades 12 on the surface of the mixing rod 11 rotate together, and the mixing blades 12 cooperate with the inner wall of the hopper 1 to fully mix and disperse the fed asphalt concrete, separating the agglomerated coarse particles. After the material is pre-mixed, the tilt angle of the chute 9 needs to be adjusted by the electric push rod 18 according to the height and distance of the target unloading position. The electric push rod 18 at the bottom of the mounting plate 7 is activated, and the output end of the electric push rod 18 extends upward or retracts downward. Since the chute 9 is rotatably connected to the fixed block 4 at the bottom of the hopper 1 through the rotating shaft 6, the extension and retraction force of the electric push rod 18 will push the chute 9 to rotate around the rotating shaft 6, thereby changing the tilt angle of the chute 9. After the outlet of the chute 9 is accurately aligned with the target position, the electric push rod 18 is turned off, and the chute angle remains stable, thus realizing the unloading of asphalt concrete.
[0023] After the angle of the chute 9 is adjusted by the anti-segregation device, the unloading channel is opened and the anti-segregation device is activated. The unloading valve 5 on the surface of the hopper 1 is opened. The pre-mixed loose asphalt concrete in the hopper 1 flows into the chute 9 under its own gravity through the unloading valve 5, flows through the three-stage steps 14 to slow down the aggregate flow rate, and at the same time the second motor 10 is started. The output end of the second motor 10 drives the rotating shaft 16 inside the chute 9 to rotate. The rotating plate 15 on the surface of the rotating shaft 16 rotates together, and the second stirring rod 17 at the bottom of the rotating plate 15 rotates synchronously. The second stirring rod 17 rotates inside the chute 9. During operation, the material entering the chute 9 is subjected to secondary mixing to combine coarse and fine aggregates. On the other hand, the rotating thrust pushes the material down the inner wall of the chute to prevent the aggregate from accumulating and clogging at the bottom of the chute 9. When the aggregate flows through the three-stage steps 14, it will first hit the plane of the first stage, slowing down. Then it will hit the plane of the second and third stages, further slowing down the speed. This forces a reduction in the overall flow velocity of the material, weakens the inertial advantage of the coarse aggregate, reduces the speed difference between coarse and fine aggregates, and prevents the material in the tank truck from being in a layered state of coarse at the bottom and fine at the top, thus avoiding a decrease in the strength and crack resistance of the asphalt concrete.
[0024] Example 2: like Figure 5 As shown, the deceleration structure 14 can be a honeycomb structure. When the main component of coarse aggregate in coarse-grained asphalt concrete is hard rock aggregate such as basalt and granite, if it is subjected to the impact of the three-stage structure in the chute, it is easy to cause edge and corner damage and particle breakage, resulting in finer aggregate gradation, which in turn affects the pavement strength. The honeycomb structure decelerates through friction of the hole wall, and the contact between coarse aggregate and hole wall changes from point impact to surface contact, reducing the impact force and the damage rate.
[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A coarse-grained asphalt concrete unloading device, comprising a mounting plate (7), characterized in that: An electric push rod (18) is fixedly connected to the bottom of the mounting plate (7). Four support legs (2) are fixedly connected to the surface of the mounting plate (7). A hopper (1) is fixedly connected to the surface of the four support legs (2). A feed inlet (13) is opened on the surface of the hopper (1). A discharge valve (5) is fixedly connected to the surface of the hopper (1). A motor (3) is fixedly connected to the top of the hopper (1). A stirring rod (11) is rotatably connected inside the hopper (1). A stirring blade (12) is fixedly connected to the surface of the stirring rod (11). A fixing block (4) is fixedly connected to the bottom of the hopper (1). A rotating shaft (6) is rotatably connected to the surface of the fixing block (4). A chute (9) is fixedly connected to the surface of the rotating shaft (6). An anti-segregation device is installed inside the chute (9).
2. The coarse-grained asphalt concrete unloading device according to claim 1, characterized in that: The output end of the motor (3) extends into the interior of the hopper (1) and is fixedly connected to the stirring rod (11).
3. The coarse-grained asphalt concrete unloading device according to claim 1, characterized in that: A splash guard (8) is fixedly connected to the top of the chute (9), and a second motor (10) is fixedly connected to the top of the splash guard (8).
4. The coarse-grained asphalt concrete unloading device according to claim 3, characterized in that: The anti-segregation device includes a slowing structure (14), which is fixedly connected inside the chute (9). A rotating shaft (16) is rotatably connected inside the chute (9). The output end of the second motor (10) extends rotatably into the chute (9) and is fixedly connected to the rotating shaft (16). A rotating plate (15) is fixedly connected to the surface of the rotating shaft (16), and a second stirring rod (17) is fixedly connected to the bottom of the rotating plate (15).
5. The coarse-grained asphalt concrete unloading device according to claim 1, characterized in that: The output end of the electric push rod (18) passes through the mounting plate (7) and is fixedly connected to the chute (9).
6. The coarse-grained asphalt concrete unloading device according to claim 1, characterized in that: The mounting plate (7) is U-shaped, and the bottom of the chute (9) is in contact with the surface of the mounting plate (7).
7. A coarse-grained asphalt concrete unloading device according to claim 4, characterized in that: The slowing structure (14) can be a three-step ladder.
8. The coarse-grained asphalt concrete unloading device according to claim 4, characterized in that: The slowing structure (14) can be a honeycomb structure.
9. A coarse-grained asphalt concrete unloading device according to claim 3, characterized in that: The coverage width of the splash guard (8) is the same as the top width of the chute (9).
10. A coarse-grained asphalt concrete unloading device according to claim 4, characterized in that: There are multiple second stirring rods (17), which are evenly distributed at the bottom of the rotating plate (15). The rotation trajectory of the second stirring rods (17) covers the outlet area of the slow-moving structure (14) inside the chute (9).