A cold-feeding and stacking device for RAP material with a pretreatment structure

Abstract

This invention discloses a cold-feeding and stacking device for RAP material with a pre-treatment structure, belonging to the field of asphalt concrete production. The device includes a frame; a RAP material silo and a hot aggregate silo are fixed side-by-side on the top wall of the frame; multiple aggregate silos are arranged inside the hot aggregate silo; the hot aggregate silo and the RAP material silo share a side wall, enabling heat transfer from the hot aggregate silo to the milled material inside the RAP material silo; material weighing mechanisms are installed below both the RAP material silo and the hot aggregate silo; both material weighing mechanisms are mounted on the frame; and a material stacking silo corresponding to the two material weighing mechanisms is installed at the bottom of the frame. By transferring heat from the hot aggregate silo to the milled material inside the RAP material silo, the RAP material in the RAP material silo can be preheated. The material can then be alternately unloaded into the stacking silo via the two material weighing mechanisms, achieving stacking and coating of RAP material and aggregate within the stacking silo. This effectively improves the dispersion and fusion effect of RAP material and aggregate, effectively raising the temperature of the RAP material and ensuring the production of high-quality asphalt mixtures after adding RAP material.

Description

Technical Field

[0001] This invention relates to the field of asphalt concrete production, and in particular to a cold-feeding and stacking device for RAP material with a pre-treatment structure. Background Technology

[0002] With the continuous development of highway construction and maintenance projects, the large-scale and efficient utilization of recycled asphalt mixtures (RAPs) has become an important development direction for the industry. The effective recycling and reuse of RAPs can not only save mineral resources and reduce road construction costs, but also contribute to environmental protection and sustainable development.

[0003] To improve production efficiency and reduce energy consumption, cold-feed technology is used in the production of recycled asphalt mixtures. Cold-feed technology involves directly mixing RAP (Rich Asphalt Powder) at room temperature with aggregate from a hot aggregate bin in a specific ratio before adding it to a mixing tank. However, since RAP is typically solid at room temperature, in existing technologies, even with prolonged mixing, the fusion effect and mixing quality between the RAP and aggregate remain poor, affecting the quality of the recycled asphalt mixture. Furthermore, the hot recycling systems commonly used for RAP are expensive, and the various milled aggregates added contain impurities and under-mixed materials, resulting in poor real-time controllability and continuous stability of the mix design, with significant random variability, making it difficult to achieve high-quality asphalt mixture production.

[0004] Therefore, there is an urgent need to study a cold-feeding and stacking device for RAP material with a pretreatment structure in order to solve the above problems. Summary of the Invention

[0005] This invention provides a cold-feeding and stacking device for RAP material with a pre-treatment structure, which can solve the technical problems existing in the prior art, such as the poor fusion effect and mixing quality of RAP material and aggregate after the mixing pot has been working for a long time, thus affecting the production quality of recycled asphalt mixture.

[0006] A cold-feeding and stacking device for RAP material with a pretreatment structure includes a frame; a RAP silo and a hot material silo are fixed side by side on the top wall of the frame; multiple aggregate bins are arranged side by side in the hot material silo; the hot material silo and the RAP silo share a side wall to transfer heat from the hot material silo to the interior of the RAP silo; a material weighing mechanism is provided below both the RAP silo and the hot material silo; both material weighing mechanisms are mounted on the frame; and a material stacking bin corresponding to the material weighing mechanism is installed at the bottom of the frame.

[0007] As a preferred embodiment of the present invention, the bottom of the RAP silo has a first outlet; the bottom of the hot material silo has a second outlet; the bottom of each of the aggregate silos has a third outlet, and the aggregate in any one of the aggregate silos is discharged into the second outlet through the third outlet; the bottom of the material stacking silo has a fourth outlet; and unloading mechanisms are installed in the first outlet, the multiple third outlets, and the fourth outlet.

[0008] As a preferred embodiment of the present invention, the unloading mechanism includes an unloading plate disposed within a first outlet, a third outlet, or a fourth outlet; each of the opposite sides of the unloading plate is horizontally fixed with a first rotating shaft; the two first rotating shafts are respectively rotatably connected to the opposite sidewalls of the first outlet, the third outlet, or the fourth outlet; one end of one of the first rotating shafts is coaxially fixed to the output shaft of a first motor; the first motor is fixed to one sidewall of the first outlet, the third outlet, or the fourth outlet.

[0009] As a preferred embodiment of the present invention, the material weighing mechanism includes a hopper with an open top; weighing sensors are connected to opposite side walls of the hopper; both weighing sensors are fixed to the frame; the bottom of the hopper has a discharge port; an electric push rod is vertically fixed to one side wall of the hopper; a movable plate is vertically fixed to the output end of the electric push rod; the movable plate is located at the outlet end of the discharge port, and one side of the movable plate slides against the outlet end of the discharge port.

[0010] As a preferred embodiment of the present invention, a material leveling mechanism is installed at the top of the material stacking hopper; the material leveling mechanism is used to receive the material discharged from any material weighing mechanism and uniformly feed the material into the material stacking hopper; the material leveling mechanism includes a linear drive assembly horizontally installed at the top opening of the material stacking hopper; a receiving hopper with an open top is connected to the linear drive assembly; the receiving hopper is located inside the top opening of the material stacking hopper; a discharge assembly is installed at the bottom outlet of the receiving hopper.

[0011] As a preferred embodiment of the present invention, the linear drive assembly includes a guide rod and a screw, which are respectively horizontally arranged on opposite sides of the top opening of the material stacking hopper; both ends of the guide rod and both ends of the screw are rotatably connected to support blocks; two pairs of support blocks are respectively fixed to opposite edges of the top opening of the material stacking hopper; a slider is slidably connected to the guide rod; a transmission block is threadedly connected to the screw; the transmission block and the slider are respectively fixed to opposite side walls of the receiving hopper; a first pulley is fixedly sleeved on one end of the screw; a second pulley is connected to the first pulley via a synchronous belt drive; the second pulley is fixedly sleeved on the output shaft of a second motor; the second motor is fixed to one side wall of the material stacking hopper.

[0012] As a preferred embodiment of the present invention, a vibration motor is installed on each of the opposite side walls of the receiving hopper.

[0013] As a preferred embodiment of the present invention, the discharge assembly includes a rotating plate strip disposed in the bottom outlet of the receiving hopper; both ends of the rotating plate strip are horizontally fixed with second rotating shafts; the two second rotating shafts are respectively rotatably connected to opposite side walls of the receiving hopper; one end of one of the second rotating shafts is coaxially fixed to the output shaft of a third motor; the third motor is fixed to one side wall of the receiving hopper.

[0014] This invention provides a cold-feeding and stacking device for RAP material with a pretreatment structure. By designing a hot material silo and a RAP material silo to share a side wall, heat from the hot material silo is transferred to the interior of the RAP material silo, preheating the RAP material inside the RAP material silo, thereby increasing its temperature and reducing its moisture content. After weighing the aggregate from the hot material silo and the RAP material from the RAP material silo separately into two material weighing mechanisms, the two weighing mechanisms can alternately feed the RAP material and aggregate into the material stacking silo, achieving the desired temperature and moisture content of the RAP material and aggregate. Multiple RAP layers and multiple aggregate layers are formed within the material stacking bin, with each RAP layer situated between two adjacent aggregate layers. This achieves overlapping and encapsulation of RAP and aggregate within the bin, utilizing the heat from the aggregate to heat the RAP, rapidly increasing its temperature and reducing energy waste. Simultaneously, it improves the dispersion and fusion effect of RAP and aggregate after cold-added stacking. This not only effectively increases the RAP temperature but also ensures the production of high-quality asphalt mixtures with superior performance after adding RAP. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a RAP material cold feeding and stacking device with a pretreatment structure provided by the present invention.

[0016] Figure 2 This is a schematic diagram showing the relative positions of the RAP silo, hot silo, and material weighing mechanism of the present invention. Figure 3 This is a schematic diagram showing the relative positions of the RAP hopper and the hot hopper in this invention.

[0017] Figure 4 This is a schematic diagram of the structure of the hot material hopper of the present invention.

[0018] Figure 5 This is a schematic diagram showing the relative position between the material weighing mechanism and the material stacking bin of the present invention.

[0019] Figure 6 This is a schematic diagram of the material weighing mechanism of the present invention.

[0020] Figure 7 for Figure 6 The main view of the structure.

[0021] Figure 8 This is a schematic diagram of the material stacking bin of the present invention.

[0022] Figure 9 for Figure 8 The main view of the structure.

[0023] Figure 10 for Figure 8 Top view of the structure.

[0024] Figure 11 This is a schematic diagram of the unloading mechanism of the present invention.

[0025] Explanation of reference numerals in the attached figures: 1-Frame, 2-RAP hopper, 3-Hot hopper, 4-Material weighing mechanism, 5-Material stacking hopper, 6-Unloading mechanism, 7-Plain material feeding mechanism, 201-First outlet, 301-Aggregate bin, 302-Second outlet, 303-Third outlet, 401-Loading hopper, 402-Weighing sensor, 403-Discharge port, 404-Electric push rod, 405-Moving plate, 501-Fourth outlet, 601-Unloading plate, 602-Second outlet One rotating shaft, 603-first motor, 701-linear drive assembly, 702-feeding hopper, 703-discharge assembly, 704-vibration motor, 7011-guide rod, 7012-screw, 7013-support block, 7014-slider, 7015-transmission block, 7016-first pulley, 7017-second pulley, 7018-second motor, 7031-rotating slat, 7032-second rotating shaft, 7033-third motor. Detailed Implementation

[0026] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0027] Example 1: Currently, existing RAP (Rich Aggregate Additive) application systems suffer from the following problems: First, the RAP silos and hot aggregate silos are installed on two separate frames, meaning they are independent and have no contact with each other. Second, RAP is directly mixed with aggregates and then transported to the mixing tank. While this method achieves cold addition of RAP, since RAP is typically solid at room temperature, without any heating, the fusion of RAP and aggregates in the mixing tank remains poor, even after prolonged operation. This results in poor asphalt mixture quality after RAP addition, with performance indicators failing to meet specifications. Furthermore, the commonly used hot recycling systems for RAP are expensive, and the various milled aggregates required contain pseudo-particles and under-grained materials, leading to poor real-time controllability and continuous stability in the mix design, as well as significant random variability, making it difficult to achieve high-quality asphalt mixture production.

[0028] Based on the above, the present invention provides a RAP material cold feeding and stacking device with a pretreatment structure, such as... Figures 1-5 As shown, the device includes a frame 1; the top wall of the frame 1 is bolted side-by-side with a RAP hopper 2 and a hot aggregate hopper 3; the bottom of the RAP hopper 2 has a first outlet 201; the bottom of the hot aggregate hopper 3 has a second outlet 302; multiple aggregate bins 301 are arranged side-by-side inside the hot aggregate hopper 3; the bottom of each aggregate bin 301 has a third outlet 303, and the aggregate in any aggregate bin 301 is discharged into the second outlet 302 through the third outlet 303; according to the appendix to the instruction manual... Figure 4As shown, the size of the aggregate particles in the multiple aggregate bins 301 decreases from left to right; the hot aggregate bin 3 and the RAP bin 2 share a side wall, which enables the heat in the hot aggregate bin 3 to be transferred to the interior of the RAP bin 2; both the RAP bin 2 and the hot aggregate bin 3 are equipped with material weighing mechanisms 4 below them; both material weighing mechanisms 4 are mounted on the frame 1; the bottom of the frame 1 is bolted to a material stacking bin 5 corresponding to the material weighing mechanism 4; the bottom of the material stacking bin 5 has a fourth outlet 501; the first outlet 201, multiple third outlets 303 and the fourth outlet 501 are all equipped with unloading mechanisms 6. By sharing a side wall between the hot material bin 3 and the RAP material bin 2, heat from the hot material bin 3 is transferred to the interior of the RAP material bin 2, preheating the RAP material in the RAP material bin 2 and raising its temperature above room temperature. Then, the aggregate from the hot material bin 3 and the RAP material from the RAP material bin 2 are respectively fed into two material weighing mechanisms 4. After each weighing mechanism 4 has completed its weighing of the aggregate and RAP material, the two weighing mechanisms 4 alternately feed the RAP material and aggregate into the material stacking bin 5, thus achieving the desired temperature for the RAP material. Multiple RAP material layers and multiple aggregate layers are formed in the material stacking bin 5, and any RAP material layer in the material stacking bin 5 is located between two adjacent aggregate layers. This completes the stacking and covering of RAP material and aggregate in the material stacking bin 5. The heat of the aggregate (around 200℃) can be used to heat the RAP material, which effectively ensures the heat conduction effect and heating speed of the aggregate to the RAP material. It improves the temperature of the RAP material and also improves the dispersion and fusion effect of the RAP material and aggregate after stacking. It can also effectively ensure the production of high-quality asphalt mixture after adding RAP material.

[0029] RAP material and aggregate are respectively put into RAP silo 2 and hot aggregate silo 3. According to the proportion, the aggregate in each aggregate silo is put into aggregate weighing mechanism 401. Weighing mechanism 401 weighs the aggregate in batches to obtain the total aggregate demand. At the same time, according to the demand of RAP material, RAP material in RAP silo 2 is put into material weighing mechanism 402 at one time. Material weighing mechanism 402 weighs the RAP material to obtain the total RAP material demand. The stacking process begins with the first unloading and laying of aggregate in weighing mechanism 401, aiming to cover the conical bottom of the stacking bin 5 with the largest possible area, ensuring that the RAP material does not stick to the side walls and is completely covered. The RAP material is then unloaded in the correct quantity. The remaining materials are then stacked and unloaded in sequence at intervals. When the aggregate in weighing mechanism 402 is added to the stacking bin 5 in N increments (N is a positive integer, usually not greater than 3), the aggregate in weighing mechanism 401 is added to the stacking bin 5 in N+1 increments. This ensures that the RAP material is laid on top of the aggregate and completely covers it, thus forming multiple RAP material layers and multiple aggregate layers within the stacking bin 5. Any RAP material layer within the stacking bin 5 is located between two adjacent aggregate layers, completing the stacking of RAP material and aggregate within the stacking bin 5. The heat from the aggregate can be used to heat the RAP material, effectively increasing its temperature and ensuring the production quality of the recycled asphalt mixture. In addition, when the aggregate is first added to the material stacking bin 5, the amount of aggregate needs to be higher than the bottom conical structure of the material stacking bin 5. This avoids the RAP material from sticking to the inner wall of the material stacking bin 5 when the aggregate heats the RAP material because the RAP material comes into contact with the inclined surface of the bottom conical structure of the material stacking bin 5. This effectively ensures the stacking, coating and heating effect of the RAP material and the aggregate.

[0030] Specifically, the number of times the RAP material and aggregate are stacked is adjusted by the control program according to the amount of RAP material. For example, if there is 200 kg of RAP material, it may be possible to operate the RAP material feeding once, that is, to put all 200 kg of RAP material into the material stacking bin 5 at once. The specific operation is as follows: first, put a certain amount of bottom aggregate into the material stacking bin 5, then put all the RAP material on the hot aggregate in the material stacking bin 5, and then put a certain amount of aggregate into the material stacking bin 5 again, so that the RAP material is completely covered by the aggregate. The RAP material is between two adjacent layers of aggregate, which completes the stacking of RAP material and aggregate, realizes the maximum surface contact between the two materials, can effectively heat the RAP material by utilizing the heat of the aggregate, and also ensures the dispersion and fusion effect of RAP material and aggregate. If there are 400 kg of RAP material, it may only require two RAP material feeding operations. The specific operation is as follows: first, put a certain amount of base aggregate into material stacking hopper 5, then put about 200 kg of RAP material into material stacking hopper 5, then put a certain amount of aggregate into material stacking hopper 5 for coating and heating, then put the remaining about 200 kg of RAP material into material stacking hopper 5, and finally put a certain amount of aggregate into material stacking hopper 5, so that the RAP material is completely covered by aggregate. If the amount of RAP material is larger, it may only require a maximum of three RAP material feeding operations according to the stacking procedure rules.

[0031] Among them, such as Figures 3-4 , Figures 8-9 and Figure 11As shown, to ensure the shielding effect of the first outlet 201, the third outlet 303, and the fourth outlet 501, and to guarantee the discharge efficiency of the first outlet 201, the third outlet 303, and the fourth outlet 501, the unloading mechanism 6 is designed to include an unloading plate 601 disposed within the first outlet 201, the third outlet 303, or the fourth outlet 501. When the unloading plate 601 is horizontally disposed within the first outlet 201, the third outlet 303, or the fourth outlet 501, the edge of the unloading plate 601 abuts against the inner wall of the first outlet 201, the third outlet 303, or the fourth outlet 501, respectively, thereby shielding the first outlet 201, the third outlet 303, and the fourth outlet 501 and effectively preventing the discharge of material from the first outlet 201, the third outlet 303, and the fourth outlet 501. When the unloading plate 601 is vertically disposed within the first outlet 201 or the third outlet 501... When material enters outlet 303 or outlet 501, the obstruction to outlet 201, outlet 303, or outlet 501 is released, allowing material to be discharged from outlet 201, outlet 303, or outlet 501, thus ensuring the discharge effect of outlets 201, 303, and 501. Each opposite side of the discharge plate 601 is horizontally bolted with a first rotating shaft 602. The two first rotating shafts 602 are rotatably connected to the opposite sidewalls of outlet 201, outlet 303, or outlet 501, respectively. One end of each first rotating shaft 602 is coaxially fixed to the output shaft of a first motor 603. The first motor 603 is bolted to one sidewall of outlet 201, outlet 303, or outlet 501. The first motor 603 is a conventional servo motor in this field. The first motor 603 drives the first rotating shaft 602 to rotate, thereby rotating the unloading plate 601 to a horizontal state, thus blocking the first outlet 201, the third outlet 303 and the fourth outlet 501. When the first motor 603 rotates the unloading plate 601 to a vertical state via the first rotating shaft 602, the material in the first outlet 201, the third outlet 303 or the fourth outlet 501 is discharged, ensuring the discharge efficiency of the first outlet 201, the third outlet 303 and the fourth outlet 501.

[0032] Among them, such as Figure 2 and Figures 5-7As shown, in order to ensure the weighing efficiency and effect of aggregate or RAP material, the material weighing mechanism 4 is designed to include a hopper 401 with an open top structure; conventional weighing sensors 402 are connected to the opposite side walls of the hopper 401; both weighing sensors 402 are bolted to the frame 1; the bottom of the hopper 401 has a discharge port 403; a conventional electric push rod 404 is vertically bolted to one side wall of the hopper 401; a movable plate 405 is vertically bolted to the output end of the electric push rod 404; the movable plate 405 is located at the outlet end of the discharge port 403, and one side of the movable plate 405 slides against the outlet end of the discharge port 403. The weighing sensor 402 weighs the material entering the hopper 401 in real time, effectively ensuring the weighing efficiency of the material. When the material in the hopper 401 reaches the preset value, the electric push rod 404 drives the movable plate 405 to move upward, causing the movable plate 405 to release the obstruction of the discharge port 403. Then, the material in the hopper 401 is discharged into the material stacking bin 5 through the discharge port 403, effectively ensuring the material conveying effect.

[0033] Example 2: Based on Example 1, since the material in the hopper 401 is directly discharged into the material stacking bin 5 through the discharge port 403, in order to ensure the stacking effect of the material entering the material stacking bin 5, such as... Figure 5 and Figures 8-10As shown, a material leveling mechanism 7 is installed on the top of the material stacking bin 5. The material leveling mechanism 7 is used to receive the material discharged from any material weighing mechanism 4 and uniformly feed the material into the material stacking bin 5. The material leveling mechanism 7 includes a linear drive assembly 701 horizontally installed at the top opening of the material stacking bin 5. A receiving hopper 702 with an open top is connected to the linear drive assembly 701. The receiving hopper 702 is located in the top opening of the material stacking bin 5. The bottom outlet of the receiving hopper 702 has a rectangular structure, and the length of the bottom outlet of the receiving hopper 702 is consistent with the distance between one of the opposite side walls of the material stacking bin 5. A discharge assembly 703 is installed at the bottom outlet of the receiving hopper 702. First, the material in the loading hopper 401 is discharged into the receiving hopper 702 through the discharge port 403. Then, the linear drive component 701 drives the receiving hopper 702 to move horizontally and reciprocally in the top opening of the material stacking bin 5. The movement lead of the receiving hopper 702 is consistent with the distance between the opposite side wall of the material stacking bin 5. At the same time, the discharge component 703 is controlled to release the blockage of the bottom outlet of the receiving hopper 702, so that the material in the receiving hopper 702 is discharged into the material stacking bin 5. Since the receiving hopper 702 moves horizontally and reciprocally in the top opening of the material stacking bin 5, the material in the receiving hopper 702 is evenly spread in the material stacking bin 5, which effectively ensures the superposition effect between aggregate and RAP material, and thus ensures the later mixing effect between RAP material and aggregate.

[0034] Among them, such as Figures 8-10As shown, to ensure the smooth movement of the receiving hopper 702, the linear drive assembly 701 is designed to include a guide rod 7011 and a screw 7012, which are horizontally positioned on opposite sides of the top opening of the material stacking hopper 5. Support blocks 7013 are rotatably connected to both ends of the guide rod 7011 and the screw 7012. The two pairs of support blocks 7013 are bolted to the opposite edges of the top opening of the material stacking hopper 5. A slider 7014 is slidably connected to the guide rod 7011. A transmission block 7015 is threaded onto the screw 7012; the transmission block 7015 and the slider 7014 are respectively bolted to the opposite side walls of the receiving hopper 702; a first pulley 7016 is keyed to one end of the screw 7012; the first pulley 7016 is connected to a second pulley 7017 via a synchronous belt drive; the second pulley 7017 is keyed to the output shaft of a second motor 7018; the second motor 7018 is bolted to one side wall of the material stacking bin 5. The second motor 7018 drives the screw 7012 to rotate forward via the second pulley 7017 and the first pulley 7016. This causes the transmission block 7015 to move the receiving hopper 702 from one end of the screw 7012 to the other end. After the receiving hopper 702 reaches the other end of the screw 7012, the screw 7012 is controlled to rotate in reverse, thus moving the receiving hopper 702 from the other end of the screw 7012 to one end. By controlling the forward and reverse rotation of the screw 7012, the material in the receiving hopper 702 is evenly spread in the material stacking bin 5, ensuring the material feeding effect.

[0035] Among them, such as Figures 8-10As shown, to ensure the sealing effect of the bottom outlet of the receiving hopper 702, the discharge assembly 703 is designed to include a rotating strip 7031 disposed within the bottom outlet of the receiving hopper 702. When the rotating strip 7031 is horizontally disposed within the bottom outlet of the receiving hopper 702, the edge of the rotating strip 7031 abuts against the inner wall of the bottom outlet of the receiving hopper 702, thereby blocking the bottom outlet of the receiving hopper 702 and effectively preventing material from being discharged from the bottom outlet of the receiving hopper 702. When the rotating strip 7031 is vertically disposed within the bottom outlet of the receiving hopper 702... The obstruction of the bottom outlet of the receiving hopper 702 is removed, and the material in the bottom outlet of the receiving hopper 702 is discharged, ensuring the discharge effect of the bottom outlet of the receiving hopper 702; both ends of the rotating strip 7031 are horizontally fixed with a second rotating shaft 7032; the two second rotating shafts 7032 are respectively rotatably connected to the opposite side walls of the receiving hopper 702; one end of one second rotating shaft 7032 is coaxially fixed to the output shaft of a third motor 7033; the third motor 7033 is bolted to one side wall of the receiving hopper 702; the third motor 7033 adopts a conventional servo motor in this field. The third motor 7033 drives the second rotating shaft 7032 to rotate, thereby rotating the rotating plate 7031 to a horizontal state and blocking the bottom outlet of the receiving hopper 702. When the third motor 7033 rotates the rotating plate 7031 to a vertical state via the second rotating shaft 7032, the material in the bottom outlet of the receiving hopper 702 is discharged, ensuring the discharge efficiency of the bottom outlet of the receiving hopper 702.

[0036] In addition, such as Figure 8 As shown, to avoid material accumulation in the receiving hopper 702, conventional vibratory motors 704 are bolted to opposite side walls of the receiving hopper 702. After all the material in the loading hopper 401 is discharged into the receiving hopper 702 through the discharge port 403, the vibratory motors 704 are started first. The vibratory motors 704 drive the side walls of the receiving hopper 702 to vibrate, causing the material in the receiving hopper 702 to be evenly spread in the receiving hopper 702. Then, the material in the receiving hopper 702 is discharged into the material stacking bin 5, effectively ensuring the uniformity of material discharge from the receiving hopper 702.

[0037] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A cold-feeding and stacking device for RAP material with a pretreatment structure, comprising a frame (1); characterized in that: The top wall of the frame (1) is fixed with a RAP silo (2) and a hot material silo (3) side by side; multiple aggregate bins (301) are arranged side by side in the hot material silo (3); the hot material silo (3) and the RAP silo (2) share a side wall to transfer heat from the hot material silo (3) to the interior of the RAP silo (2); a material weighing mechanism (4) is provided below both the RAP silo (2) and the hot material silo (3); both material weighing mechanisms (4) are mounted on the frame (1); a material stacking bin (5) corresponding to the material weighing mechanism (4) is installed at the bottom of the frame (1).

2. The RAP material cold feeding and stacking device with a pre-treatment structure as described in claim 1, characterized in that, The bottom of the RAP silo (2) has a first outlet (201); the bottom of the hot material silo (3) has a second outlet (302); the bottom of each of the aggregate silos (301) has a third outlet (303), and the aggregate in any aggregate silo (301) is discharged into the second outlet (302) through the third outlet (303); the bottom of the material stacking silo (5) has a fourth outlet (501).

3. The RAP material cold feeding and stacking device with a pre-treatment structure as described in claim 2, characterized in that, The first outlet (201), multiple third outlets (303) and the fourth outlet (501) are all equipped with unloading mechanisms (6).

4. The RAP material cold feeding and stacking device with a pre-treatment structure as described in claim 3, characterized in that, The unloading mechanism (6) includes an unloading plate (601) disposed in the first outlet (201), the third outlet (303), or the fourth outlet (501); the opposite sides of the unloading plate (601) are each horizontally fixed with a first rotating shaft (602); the two first rotating shafts (602) are respectively rotatably connected to the opposite side wall of the first outlet (201), the opposite side wall of the third outlet (303), or the opposite side wall of the fourth outlet (501); one end of one of the first rotating shafts (602) is coaxially fixed to the output shaft of a first motor (603); the first motor (603) is fixed to one side wall of the first outlet (201), the side wall of the third outlet (303), or the side wall of the fourth outlet (501).

5. The RAP material cold-feeding and stacking device with a pre-treatment structure as described in claim 1, characterized in that, The material weighing mechanism (4) includes a hopper (401) with an open top; weighing sensors (402) are connected to the opposite side walls of the hopper (401); both weighing sensors (402) are fixed on the frame (1); the bottom of the hopper (401) has a discharge port (403); an electric push rod (404) is vertically fixed to one side wall of the hopper (401); a movable plate (405) is vertically fixed to the output end of the electric push rod (404); the movable plate (405) is located at the outlet end of the discharge port (403), and one side of the movable plate (405) slides against the outlet end of the discharge port (403).

6. The RAP material cold-feeding and stacking device with a pre-treatment structure as described in claim 1, characterized in that, The top of the material stacking bin (5) is equipped with a material leveling mechanism (7); the material leveling mechanism (7) is used to receive the material discharged from any material weighing mechanism (4) and uniformly put the material into the material stacking bin (5).

7. The RAP material cold feeding and stacking device with a pre-treatment structure as described in claim 6, characterized in that, The material leveling mechanism (7) includes a linear drive assembly (701) horizontally installed at the top opening of the material stacking bin (5); the linear drive assembly (701) is connected to a receiving hopper (702) with an open top; the receiving hopper (702) is located inside the top opening of the material stacking bin (5); and a discharge assembly (703) is installed at the bottom outlet of the receiving hopper (702).

8. The RAP material cold feeding and stacking device with a pre-treatment structure as described in claim 7, characterized in that, The linear drive assembly (701) includes a guide rod (7011) and a screw (7012) horizontally disposed on opposite sides of the top opening of the material stacking bin (5); both ends of the guide rod (7011) and both ends of the screw (7012) are rotatably connected to support blocks (7013); the two pairs of support blocks (7013) are respectively fixed on opposite edges of the top opening of the material stacking bin (5); a slider (7014) is slidably connected to the guide rod (7011); and the screw (7012) is threadedly connected to... There is a transmission block (7015); the transmission block (7015) and the slider (7014) are respectively fixed on the opposite side wall of the receiving hopper (702); a first pulley (7016) is fixedly sleeved on one end of the screw (7012); the first pulley (7016) is connected to a second pulley (7017) by a synchronous belt drive; the second pulley (7017) is fixedly sleeved on the output shaft of a second motor (7018); the second motor (7018) is fixed on one side wall of the material stacking bin (5).

9. The RAP material cold-feeding and stacking device with a pre-treatment structure as described in claim 7 or 8, characterized in that, Vibration motors (704) are installed on one of the opposite side walls of the receiving hopper (702).

10. The RAP material cold feeding and stacking device with a pre-treatment structure as described in claim 9, characterized in that, The discharge assembly (703) includes a rotating plate (7031) disposed in the bottom outlet of the receiving hopper (702); both ends of the rotating plate (7031) are horizontally fixed with second rotating shafts (7032); the two second rotating shafts (7032) are respectively rotatably connected to the opposite side walls of the receiving hopper (702); one end of one second rotating shaft (7032) is coaxially fixed to the output shaft of a third motor (7033); the third motor (7033) is fixed to one side wall of the receiving hopper (702).

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