Asphalt mixture uniform unloading device

The combined design of the anti-segregator and the material distribution spiral solves the problem of asphalt mixture segregation in the transport vehicle box, achieving uniform unloading and paving surface uniformity.

CN116040361BActive Publication Date: 2025-10-03CHINA FIRST HIGHWAY ENGINEERING CO LTD +2
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Patent Information

Application Number
CN202310035271.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-10
Publication Date
2025-10-03
Estimated Expiration
2043-01-10

AI Technical Summary

Technical Problem

In the prior art, when asphalt mixture is unloaded into a transport truck box, coarse aggregate tends to roll toward the periphery of the box, while fine aggregate concentrates in the middle of the box, resulting in segregation and affecting paving quality.

Method used

An anti-segregator is used to break up sticky clumps. Combined with the design of the material distribution screw and the material receiving silo, it ensures that the asphalt mixture is evenly distributed laterally in the transport vehicle box and unloaded longitudinally layer by layer to prevent segregation.

Benefits of technology

The asphalt mixture is uniformly unloaded in the transport truck box, avoiding hill-like accumulation and segregation, and ensuring the uniformity of the paving surface material.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a device for uniformly unloading asphalt mixture, wherein the input end of the conveyor belt extends below the discharge port of the storage bin, and the output end extends above the parking space of the transport vehicle. An anti-segregator is centrally arranged in the discharge port of the storage bin to break up sticky clumps and prevent the discharge port from being blocked. A material distribution hopper is arranged between the discharge port of the storage bin and the conveyor belt and is provided with a material distribution spiral. A receiving bin is arranged below the output end of the conveyor belt. During the material receiving process, the receiving bin reciprocates so that the asphalt mixture falls evenly into the receiving bin. A plurality of bin doors are arranged along a longitudinal array at the bottom of the receiving bin, and each bin door can be opened synchronously so that the asphalt mixture falls into the carriage of the transport vehicle at one time. The provided device for uniformly unloading asphalt mixture can uniformly unload the asphalt mixture in the storage bin into the carriage of the transport vehicle, avoiding the phenomenon of concentration of fine materials in the middle and more coarse materials on both sides, which is beneficial to the material uniformity of the paved surface.
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Description

Technical Field

[0001] The invention relates to the field of asphalt mixture conveying machinery, in particular to an asphalt mixture uniform unloading device. Background Art

[0002] At present, when asphalt mixing plants unload asphalt mixture into the truck box, they usually move the truck forward, mid- and back to load the mixture three times in order to reduce the occurrence of asphalt mixture segregation. Figure 7 As shown in the figure, it is a structural diagram of the unloading device of the asphalt mixing station in the prior art. As the asphalt mixture ranging from 5 to 20 tons falls from the unloading port (size of about 0.6m×1.2m) of the storage bin (mixing tank or finished product bin) into the transport vehicle box (width of about 2m), the coarse aggregate in the asphalt mixture will roll 0.8m (2-1.2m) to the periphery of the box, resulting in the coarse aggregate on both sides of the box and the fine aggregate concentrated in the middle of the box, resulting in asphalt mixture segregation. When the asphalt mixture in this state arrives at the paving site, the coarse aggregate still rolls to the sides of the box during the unloading process, further aggravating the segregation of the asphalt mixture, resulting in the segregation phenomenon that the fine aggregate is concentrated in the middle of the paving surface of the asphalt paver and there is more coarse aggregate on both sides, resulting in uneven distribution of paving surface materials and affecting the paving quality. Summary of the Invention

[0003] In response to the above technical problems, the present invention provides an asphalt mixture uniform unloading device to achieve uniform unloading of the storage bin into the carriage of the transport vehicle, avoid hill-like accumulation of asphalt mixture in the carriage, and prevent the concentration of fine materials in the middle and the segregation of more coarse materials on both sides.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an asphalt mixture uniform unloading device, including a conveyor belt, an anti-segregator, a distribution hopper and a receiving bin; the conveyor belt is arranged on the frame along the longitudinal direction and has a width similar to the width of the vehicle box, the input end of the conveyor belt extends to below the discharge port of the storage bin, and the output end is higher than the input end and extends to above the parking space of the transport vehicle; the anti-segregator is centrally arranged in the discharge port of the storage bin, and is used to break up the asphalt mixture sticking clumps when the asphalt mixture passes through the discharge port and prevent the discharge port from being blocked; the distribution hopper is arranged between the discharge port of the storage bin and the conveyor belt and has a width similar to the width of the conveyor belt, and the discharge port of the storage bin is close to the input end of the distribution hopper. The input ends are arranged relatively to each other up and down and are connected by an intermediate bucket. A dividing spiral is arranged in the dividing hopper along the horizontal direction and connected to the rotating drive mechanism. The dividing spiral includes left-handed blades and right-handed blades arranged symmetrically along the horizontal direction; the receiving bin is arranged below the output end of the conveyor belt and its width is similar to the width of the carriage of the transport vehicle. The frame is provided with a longitudinal drive mechanism connected to the receiving bin to drive the receiving bin to move back and forth during the receiving process so that the asphalt mixture output by the conveyor belt falls evenly into the receiving bin. A plurality of bin doors are provided along the longitudinal array at the bottom of the receiving bin, and each bin door can be opened synchronously so that the asphalt mixture filled in the receiving bin falls into the carriage of the transport vehicle at one time.

[0005] Optionally, the anti-segregator is supported by a support frame below and arranged vertically in the diameter reduction area from the inner cavity of the storage bin to the discharge port, and the top of the anti-segregator is provided with a sharp portion for breaking up cohesive lumps of asphalt mixture.

[0006] Optionally, the anti-segregator is fixedly connected to the center of the support frame, and the edge of the support frame is fixedly connected to the inner wall of the discharge port. The asphalt mixture passes between the anti-segregator and the inner wall of the discharge port.

[0007] Optionally, a vertical guide rail is provided in the center of the support frame, the anti-segregator is slid in the vertical guide rail and the top extends above the support frame, and the bottom of the anti-segregator is connected to the vibration drive mechanism to drive the anti-segregator to vibrate when the asphalt mixture passes through the discharge port.

[0008] Optionally, the frame is provided with a heat-insulating and sealed cover body buckled on the conveyor belt, the input end of the distribution hopper is heat-insulating and sealedly connected to the discharge port of the storage bin, and the lower end is heat-insulating and sealedly connected to the heat-insulating and sealed cover body.

[0009] Optionally, the rear end of the frame is provided with parallel longitudinal guide rails, and the two sides of the material receiving bin are respectively slidably engaged with the longitudinal guide rails on the adjacent sides, and the longitudinal driving mechanism is used to drive the material receiving bin to move longitudinally within a range not less than the length of the material receiving bin.

[0010] Optionally, the receiving bin is provided with a synchronous switch mechanism connected to the drive of each bin door to drive each bin door to open / close synchronously.

[0011] Optionally, the receiving bin is provided with a status sensor for detecting whether the asphalt mixture is full. The status sensor is connected to the controller signal of the synchronous switch mechanism to control the operation of the synchronous switch mechanism and synchronously open each bin door when receiving the asphalt mixture full storage signal.

[0012] Optionally, a plurality of movable thermal insulation covers that are movably connected along the longitudinal direction are provided above the receiving bin, and the end opening of the thermal insulation sealing cover extends downward and is conveyingly connected to a middle one of the plurality of movable thermal insulation covers.

[0013] Optionally, the unloading process of the asphalt mixture uniform unloading device includes: the asphalt mixture in the storage bin is transported from the discharge port to the distribution hopper, and when the asphalt mixture passes through the discharge port, the anti-segregator breaks up the cohesive clumps of the asphalt mixture to prevent the discharge port from being blocked; the distribution spiral of the distribution hopper rotates so that the asphalt mixture falls evenly laterally into the entire width range of the input end of the conveyor belt; the conveyor belt continues to operate, driving the asphalt mixture to move from the input end to the output end and fall into the receiving bin; during the material receiving process of the receiving bin, the longitudinal drive mechanism drives the receiving bin to move back and forth within the length range so that the asphalt mixture falls evenly into the receiving bin along the longitudinal direction; after the asphalt mixture fills the receiving bin, each bin door can be opened synchronously so that the asphalt mixture falls into the truck box at one time.

[0014] Compared with the existing technology, the provided asphalt mixture uniform unloading device makes the asphalt mixture in the finished product bin discharged uniformly through the use of an anti-segregation device; the secondary stirring of the material dividing spiral ensures that the asphalt mixture is horizontally uniform in the carriage of the transport vehicle, and the asphalt mixture is unloaded layer by layer into the material carriage through the material receiving bin, so that the asphalt mixture does not segregate longitudinally in the carriage of the transport vehicle, and the asphalt mixture is uniformly unloaded into the carriage, avoiding the hill-like accumulation of the asphalt mixture in the carriage, preventing the concentration of fine materials in the middle and the segregation of more coarse materials on both sides, thereby ensuring the uniformity of the material from the source, thereby ensuring the uniformity of the paving surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 This is a structural schematic diagram of the asphalt mixture uniform unloading device provided by the present invention.

[0017] Figure 2A front view of the structural schematic diagram of the provided distribution hopper.

[0018] Figure 3 Schematic diagram of the structure of the first preferred embodiment of the anti-segregator provided.

[0019] Figure 4 Schematic diagram of the structure of the second preferred embodiment of the anti-segregator provided.

[0020] Figure 5 The front view of the structural schematic diagram of the provided receiving silo.

[0021] Figure 6 The unloading process flow chart of the asphalt mixture uniform unloading device provided is shown.

[0022] Figure 7 The figure is a schematic structural diagram of an asphalt mixing station unloading device in the prior art.

[0023] In the figure, 1 is a storage bin, 2 is an anti-segregator, 21 is a support frame, 22 is a support rod, 23 is a vibration drive mechanism, 3 is an intermediate bucket, 4 is a material distribution hopper, 41 is a material distribution spiral, 5 is a conveyor belt, 51 is a heat-insulating sealing cover, 6 is a material receiving bin, 61 is a bin door, 7 is a longitudinal guide rail, 8 is a frame, and 9 is a transport vehicle. DETAILED DESCRIPTION

[0024] At present, when the asphalt mixing station with existing technology unloads the asphalt mixture into the truck box, the asphalt mixture in the storage bin falls directly into the truck box, and the coarse aggregate will roll to the periphery of the box body. The coarse aggregate is on both sides of the box body, and the fine aggregate is concentrated in the middle of the box body, resulting in segregation, which affects the uniformity of the subsequent paving asphalt mixture and thus affects the paving quality.

[0025] In order to solve the above problems, the present invention provides an asphalt mixture uniform unloading device to improve the longitudinal uniformity and lateral uniformity of the asphalt mixture when it is unloaded from the discharge bin into the carriage of a transport vehicle, thereby avoiding the occurrence of hill-like accumulation of the asphalt mixture in the carriage, concentration of fine materials in the middle, and more coarse materials on both sides.

[0026] The technical solution adopted by the present invention to solve its technical problems is: the device improves the unloading uniformity from multiple aspects, including improving the uniformity of the asphalt mixture discharge in the finished product bin through the use of an anti-segregator, using the dividing spiral of the dividing hopper for secondary stirring to ensure that the asphalt mixture is horizontally uniform in the vehicle box, and using the receiving bin to unload the asphalt mixture layer by layer into the material vehicle to ensure that the asphalt mixture does not segregate longitudinally in the vehicle box.

[0027] The following describes in detail preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the embodiments described are merely some, not all, of the present invention. The following description of at least one exemplary embodiment is merely illustrative and is not intended to limit the present invention, its application, or use.

[0028] The asphalt mixture uniform unloading device provided in the preferred embodiment of the present invention includes a conveyor belt 5, an anti-segregation device 2, a distribution hopper 4 and a receiving bin 6, which is used to transport the asphalt mixture from the storage bin 1 to the vehicle box of the transport vehicle 9.

[0029] The anti-segregation device 2 is centrally located within the discharge port of the storage silo 1. A sharp point is located on the top of the device to break up any clumping of the asphalt mixture as it passes through the discharge port, preventing blockage. To control the start and stop of discharge, a discharge switch is installed at the discharge port. Discharge begins when the valve is open and stops when the valve is closed.

[0030] The conveyor belt 5 is longitudinally arranged on the frame 8 and has a width similar to the width of the transport vehicle 9. The input end of the conveyor belt 5 extends below the discharge port of the storage bin 1, and the output end is higher than the input end and extends above the parking space of the transport vehicle 9. During the unloading process, the conveyor belt 5 is driven by a motor and operates continuously.

[0031] The distribution hopper 4 is arranged between the discharge port of the storage bin 1 and the conveyor belt 5 and has a width similar to that of the conveyor belt 5. A distribution screw 41 arranged in the transverse direction and connected to the rotary drive mechanism is provided in the distribution hopper 4. In the direction of the belt conveying the asphalt mixture, the front baffle of the distribution hopper is low and the rear baffle is high, simulating the paver mixing cage, to ensure that the asphalt mixture enters the distribution screw smoothly; the distribution screw is arranged in the direction from the middle to both sides, one side is arranged clockwise and the other side is arranged counterclockwise. The bottom of the distribution hopper is provided with a rectangular opening along the width direction. The rotation of the spiral blades of the distribution screw drives the asphalt mixture in the spiral blades to be transported along the spiral axis to both ends. During the transportation process, the spiral asphalt material falls evenly from the rectangular opening onto the surface near the input end of the conveyor belt. The size of the conveyor belt is slightly wider than the distribution screw to ensure that the material does not fall. The speed of the distribution screw and the speed of the conveyor belt are determined by the output. Through the above structure, the secondary mixing of the distribution screw of the distribution hopper ensures that the asphalt mixture is uniform in the transverse direction in the vehicle box. The rotary drive mechanism may be an electric motor, a hydraulic motor, and a reduction transmission mechanism provided at the output end, which can drive the material distribution screw to rotate at a set speed, without any specific structural limitation.

[0032] The receiving bin 6 is arranged below the output end of the conveyor belt 5 and has a width similar to the width of the carriage of the transport vehicle 9. The frame 8 is provided with a longitudinal drive mechanism connected to the receiving bin 6. The rear end of the frame 8 is provided with parallel longitudinal guide rails 7. The two sides of the receiving bin 6 are respectively slidably matched with the longitudinal guide rails 7 on the adjacent sides. The longitudinal drive mechanism is used to drive the receiving bin 6 to move longitudinally within a range not less than the length of the receiving bin 6. During the material receiving process, the receiving bin 6 is driven to move back and forth so that the asphalt mixture output by the conveyor belt 5 falls evenly into the receiving bin 6. Among them, the longitudinal drive mechanism is a hydraulic cylinder, a gear rack drive mechanism, or a screw drive mechanism. In the specific implementation, it can drive the receiving bin to reciprocate, and there is no structural restriction on the longitudinal drive mechanism.

[0033] Compared to existing asphalt mixing station unloading devices, the asphalt mixture uniform unloading device provided by the present invention utilizes an anti-segregation device to ensure uniform discharge of asphalt mixture from the finished product bin. Transverse conveying by a material-splitting screw ensures uniform horizontal distribution of the asphalt mixture within the transport vehicle's compartment. The asphalt mixture is unloaded layer by layer into the material compartment through the receiving hopper, ensuring longitudinal segregation within the compartment. This ensures uniform unloading of the asphalt mixture into the compartment, avoiding hilly accumulation of the asphalt mixture within the compartment and preventing the concentration of fine material in the center and the segregation of more coarse material on the sides. This ensures material uniformity from the source, thereby ensuring a uniform paved surface. This device is designed and constructed simultaneously with the asphalt mixing station, without increasing the station's height, and ensuring uniform unloading from the source.

[0034] In some preferred embodiments, the anti-segregator 2 is fixedly connected to the center of the support frame 21, and the edge of the support frame 21 is fixedly connected to the inner wall of the discharge port. Preferably, the anti-segregator 2 is a cone with a sharp portion facing upward or an umbrella-shaped radial structure, and the support frame 21 is a radial rod to facilitate the passage of the asphalt mixture.

[0035] The anti-segregator is welded to the finished product silo, ensuring a distance greater than 0.3m from the silo's edge and approximately 0.5m from the discharge port. The anti-segregator's dimensions are determined based on the size of the silo and the type of steel plate used. The asphalt mixture passes between the anti-segregator 2 and the inner wall of the discharge port. Specifically, the intermediate hopper is welded to the silo's discharge port, slightly larger in plan view than the silo's discharge port, and designed to be 0.5m high. The discharge port of the storage silo 1 is positioned vertically opposite the input end of the distribution hopper 4 and connected via the intermediate hopper, which features a low front baffle and a high rear baffle.

[0036] In some preferred embodiments, the anti-segregation device 2 is supported by a support frame 21 below and is vertically arranged within the constricted area between the inner cavity of the storage silo 1 and the discharge port. A sharp portion is provided on the top of the anti-segregation device 2 for breaking up cohesive clumps of asphalt mixture. As the cohesive clumps of asphalt mixture pass through the constricted area, the sharp portion, under the action of gravity, breaks up any cohesive clumps of asphalt mixture it touches, evenly breaking up the cohesive asphalt mixture within the finished product silo. This also prevents the asphalt mixture from forming a bulge at the bottom of the tank when it is discharged from the discharge port, potentially preventing the asphalt mixture from continuing to descend.

[0037] In some preferred embodiments, in order to enhance the effect of the anti-segregator 2 on breaking up the cohesive clumps of asphalt mixture and the fluidity at the discharge port, a vertical guide rail is provided at the center of the support frame 21. The specific vertical guide rail is a central hole structure adapted to the shape of the support rod. The support rod connected to the anti-segregator 2 is inserted in the central hole structure and can move freely. The anti-segregator 2 is slid in the vertical guide rail and the top extends above the support frame 21. The bottom of the anti-segregator 2 is connected to the vibration drive mechanism to drive the anti-segregator 2 to vibrate when the asphalt mixture passes through the discharge port. Preferably, the upper end of the intermediate hopper 3 is movably and sealedly connected to the discharge port of the storage bin 1 via an upper flexible connector, and the lower end of the intermediate hopper 3 is movably and sealedly connected to the input end of the distribution hopper 4 via a lower flexible connector. The lower end of the anti-segregator 2 is fixedly connected to the intermediate hopper 3 via a support rod 22. The vibration drive mechanism 23 is drivably connected to the intermediate hopper 3 to drive the intermediate hopper 3 and the anti-segregator 2 to vibrate and impact simultaneously. The vibration drive mechanism is a device such as an electric vibration drive cylinder, a pneumatic vibration drive cylinder, or a hydraulic vibration drive cylinder, which can generate small-amplitude high-frequency vibrations at the output end. When the asphalt mixture flows through the discharge port, the anti-segregator 2 vibrates and crushes the cohesive clumps therein, which can achieve a better crushing effect. At the same time, the intermediate hopper 3 is also in a vibrating state, which can effectively prevent the asphalt mixture from adhering to the inner wall of the intermediate hopper 3 compared to a static state.

[0038] In some preferred embodiments, the bottom of the receiving bin 6 is provided with multiple doors 61 arranged in a longitudinal array. These doors are each configured as strips, and all of them are controlled by a master switch for synchronous opening and closing. Preferably, the receiving bin 6 is provided with a synchronous switch mechanism operatively connected to each door 61 to drive the doors 61 to open and close synchronously. In some preferred embodiments, the synchronous switch mechanism is a parallelogram linkage mechanism connected to the end of each door distal from the hinge axis. In other preferred embodiments, the synchronous switch mechanism is a rack-and-pinion mechanism that drives the hinge axis of each door 61 in synchronous rotation. The reciprocating motion of the rack drives the gears connected to each hinge axis to rotate synchronously. The structural principles of these mechanisms are not described in detail here. Each door 61 can open synchronously, allowing the asphalt mixture stored in the receiving bin 6 to be delivered to the transport vehicle 9 at once. The width and length of the receiving bin are slightly smaller than those of the transport vehicle to ensure that the asphalt mixture does not spill after entering the vehicle. The height can be set to 1 / 3 of the vehicle's body. The receiving bin can be moved forward and backward along a track in the direction of travel of the feed vehicle, ensuring that the asphalt mixture on the conveyor belt evenly falls into the receiving bin. In some preferred embodiments, the receiving bin 6 is provided with a status sensor for detecting whether the asphalt mixture is full. The status sensor is connected to the controller signal of the synchronous switch mechanism so that upon receiving the asphalt mixture full signal, the synchronous switch mechanism is controlled to operate and synchronously open each bin door 61. The status sensor and the controller of the synchronous switch mechanism enable each bin door to automatically open when the asphalt mixture is full, thereby automating the unloading process.

[0039] In some preferred embodiments, the frame 8 is provided with a heat-insulating sealing cover 51 that is buckled onto the conveyor belt 5, and the input end of the distribution hopper 4 is heat-insulating and sealedly connected to the discharge port of the storage bin 1, and the lower end is heat-insulating and sealedly connected to the heat-insulating sealing cover 51. The intermediate hopper, distribution hopper and receiving bin need to be closed, and insulation measures must be taken. The closed treatment of the conveyor belt can reduce the temperature of the asphalt mixture from being lost. Preferably, a plurality of movable heat-insulating cover plates that are movably plugged in along the longitudinal direction are provided above the receiving bin 6, and the end opening of the heat-insulating sealing cover 51 extends downward and is conveyed and connected to the middle one of the plurality of movable heat-insulating cover plates. Even when the receiving bin is moving back and forth, the plug-in cooperation of the movable heat-insulating cover plates can ensure that the top of the receiving bin always remains sealed to prevent heat loss.

[0040] In some preferred embodiments, the unloading process of the asphalt mixture uniform unloading device includes: the asphalt mixture in the storage bin 1 is transported from the discharge port to the distribution hopper 4, and when the asphalt mixture passes through the discharge port, the anti-segregator 2 breaks up the sticky clumps of the asphalt mixture and prevents the discharge port from being blocked; the distribution screw 41 of the distribution hopper 4 rotates so that the asphalt mixture falls evenly laterally into the entire width range of the input end of the conveyor belt 5; the conveyor belt 5 continues to operate, driving the asphalt mixture to move from the input end to the output end and fall into the receiving bin 6; during the material receiving process of the receiving bin 6, the longitudinal driving mechanism drives the receiving bin 6 to move back and forth so that the asphalt mixture falls evenly into the receiving bin 6 along the longitudinal direction; after the asphalt mixture fills the receiving bin 6, each bin door 61 can be opened synchronously so that the asphalt mixture falls into the carriage of the transport vehicle 9 at one time. The above unloading process improves the unloading uniformity from multiple aspects, including improving the uniformity of the asphalt mixture discharge in the finished product bin through the use of an anti-segregator, using the dividing screw of the dividing hopper for secondary mixing to ensure that the asphalt mixture is laterally uniform in the vehicle box, and using the receiving bin to unload the asphalt mixture layer by layer into the material truck to ensure that the asphalt mixture does not segregate longitudinally in the vehicle box, improving the longitudinal and transverse uniform distribution of the asphalt mixture in the vehicle box, ensuring the uniformity of the asphalt mixture at the source, and thus ensuring the uniformity of the paving surface.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present invention. They should all be included in the scope of the technical solutions claimed for protection by the present invention.

Claims

1. An asphalt mixture uniform unloading device for transporting asphalt mixture from a storage bin (1) to a vehicle box of a transport vehicle (9), characterized in that: It comprises a conveyor belt (5), an anti-segregator (2), a material distribution hopper (4) and a material receiving bin (6); The conveyor belt (5) is longitudinally arranged on the frame (8) and has a width similar to the width of the carriage of the transport vehicle (9). The input end of the conveyor belt (5) extends below the discharge port of the storage bin (1), and the output end is higher than the input end and extends above the parking space of the transport vehicle (9). The anti-segregation device (2) is centrally arranged in the discharge port of the storage bin (1) and is used to break up the asphalt mixture agglomerates when the asphalt mixture passes through the discharge port and prevent the discharge port from being blocked; The material distribution hopper (4) is arranged between the discharge port of the storage bin (1) and the input end of the conveyor belt (5) and has a width similar to that of the conveyor belt (5). The discharge port of the storage bin (1) and the input end of the material distribution hopper (4) are arranged vertically opposite to each other and are connected through an intermediate hopper (3). A material distribution spiral (41) arranged in a transverse direction and connected to a rotary drive mechanism is provided in the material distribution hopper (4); The receiving bin (6) is arranged below the output end of the conveyor belt (5) and has a width close to the width of the carriage of the transport vehicle (9). The frame (8) is provided with a longitudinal driving mechanism connected to the receiving bin (6) to drive the receiving bin (6) to move back and forth during the receiving process so that the asphalt mixture output by the conveyor belt (5) falls evenly into the receiving bin (6). The bottom of the receiving bin (6) is provided with a plurality of bin doors (61) along a longitudinal array, and each bin door (61) can be opened synchronously so that the asphalt mixture stored in the receiving bin (6) falls into the carriage of the transport vehicle (9) at one time.

2. The asphalt mixture uniform unloading device according to claim 1, characterized in that: The anti-segregation device (2) is supported by a support frame (21) below and is arranged vertically in a reduced diameter area from the inner cavity of the storage bin (1) to the discharge port. The top of the anti-segregation device (2) is provided with a sharp portion for breaking up cohesive lumps of asphalt mixture.

3. The asphalt mixture uniform unloading device according to claim 2, characterized in that: The anti-segregator (2) is fixedly connected above the center of the support frame (21), and the edge of the support frame (21) is fixedly connected to the inner wall of the discharge port.

4. The asphalt mixture uniform unloading device according to claim 2, characterized in that: A vertical guide rail is provided at the center of the support frame (21), the anti-segregation device (2) is slidably arranged in the vertical guide rail and the top thereof extends above the support frame (21), and the bottom of the anti-segregation device (2) is connected to a vibration drive mechanism (23) to drive the anti-segregation device (2) to reciprocate longitudinally when the asphalt mixture passes through the discharge port.

5. The asphalt mixture uniform unloading device according to claim 1, characterized in that: The frame (8) is provided with a heat-insulating sealing cover (51) buckled on the conveyor belt (5); the input end of the distribution hopper (4) is heat-insulating and sealedly connected to the discharge port of the storage bin (1); and the lower end is heat-insulating and sealedly connected to the heat-insulating sealing cover (51).

6. The asphalt mixture uniform unloading device according to claim 1, characterized in that: The rear end of the frame (8) is provided with parallel longitudinal guide rails (7), and the two sides of the material receiving bin (6) are respectively slidably matched with the longitudinal guide rails (7) on the adjacent sides, and the longitudinal driving mechanism is used to drive the material receiving bin (6) to move longitudinally within a range not less than the length of the material receiving bin (6).

7. The asphalt mixture uniform unloading device according to claim 1, characterized in that: The receiving bin (6) is provided with a synchronous switch mechanism drivingly connected to each bin door (61) to drive each bin door (61) to open or close synchronously.

8. The asphalt mixture uniform unloading device according to claim 7, characterized in that: The receiving bin (6) is provided with a status sensor for detecting whether the asphalt mixture is fully stored. The status sensor is connected to the controller signal of the synchronous switch mechanism so as to control the operation of the synchronous switch mechanism and synchronously open each bin door (61) when receiving a signal indicating that the asphalt mixture is fully stored.

9. The asphalt mixture uniform unloading device according to claim 5, characterized in that: A plurality of movable heat-insulating covers that are movably connected in the longitudinal direction are provided above the receiving bin (6); an end opening of the heat-insulating sealing cover (51) extends downward and is connected to a middle one of the plurality of movable heat-insulating covers for conveying.

10. The asphalt mixture uniform unloading device according to claim 1, characterized in that: The unloading process of the asphalt mixture uniform unloading device includes: The asphalt mixture in the storage bin (1) is transported from the discharge port to the distribution hopper (4). When the asphalt mixture passes through the discharge port, the anti-segregation device (2) breaks up the asphalt mixture agglomerates to prevent the discharge port from being blocked. The distribution screw (41) of the distribution hopper (4) rotates so that the asphalt mixture falls uniformly into the entire width range of the input end of the conveyor belt (5); The conveyor belt (5) continuously operates, driving the asphalt mixture to move from the input end to the output end and fall into the receiving bin (6); During the material receiving process of the material receiving bin (6), the longitudinal driving mechanism drives the material receiving bin (6) to move back and forth so that the asphalt mixture falls into the material receiving bin (6) uniformly along the longitudinal direction; After the asphalt mixture is fully stored in the receiving bin (6), the bin doors (61) can be opened synchronously to allow the asphalt mixture to fall into the vehicle box of the transport vehicle (9) at one time.

Citation Information

Patent Citations

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