Asphalt concrete mixture asphalt-aggregate ratio regulation and control device

Abstract

The invention relates to the technical field of concrete processing, and particularly discloses an asphalt concrete mixture asphalt-aggregate ratio regulation and control device which comprises a discharging hopper fixedly installed at the top of a mixing cylinder, two feeding assemblies and two discharging assemblies are arranged at the top of the mixing cylinder, and a spreading assembly is arranged in the discharging hopper. The feeding assembly comprises a feeding cylinder and a feeding mechanism; a third motor drives a spreading assembly to evenly distribute stone entering a discharging hopper, it is ensured that the stone enters a discharging assembly smoothly, a second motor drives a driving roller and a partition block to rotate synchronously through a mounting shaft, the stone guided by a flow guiding base is quantitatively and evenly conveyed into a mixing cylinder, and the control system controls the feeding frequency according to the feeding frequency. The feeding mechanism is driven to accurately spray petroleum asphalt in the feeding barrel into the mixing barrel through the feeding pipe, and the petroleum asphalt and aggregate are premixed, so that dynamic regulation and control of the asphalt-aggregate ratio are realized through action matching of the discharging assembly and the feeding mechanism, the stirring resistance is effectively reduced, and the quality of the mixture is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete processing, in particular to an asphalt concrete mixture oil-stone ratio control device. BACKGROUND

[0002] Asphalt concrete is a composite material made of graded aggregate and road petroleum asphalt under specific process conditions, and is widely used in road engineering construction and maintenance. Modern mixing equipment mainly uses horizontal drum mixing system. Aggregate is sent into the mixing drum by a belt conveyor, and heated asphalt is transported into the drum through a pipeline. Under the action of the stirring blade, the aggregate and asphalt are mixed. In order to ensure the accuracy of the oil-stone ratio, the equipment is equipped with weighing sensors, belt speed sensors and flow meters and other detection devices to monitor the aggregate weight, conveying speed and asphalt flow in real time, and to realize accurate proportioning control through a microcomputer control system. However, there are still two key technical problems in actual production: first, the dynamic weighing system is easily affected by factors such as belt tension changes, uneven aggregate distribution, and environmental temperature fluctuations, resulting in large weighing deviations, which seriously affects the accuracy of the oil-stone ratio; second, due to the fixed feeding position, the aggregate is concentrated and falls into a specific area of the mixing drum, forming local accumulation, and the aggregate in other areas is insufficient, causing uneven contact between asphalt and aggregate, increasing the mixing difficulty. This uneven distribution not only reduces the mixing efficiency, but also may cause quality defects such as whitish material and segregation in the mixture, affecting the road construction quality and service life.

[0003] Therefore, it is necessary to provide an asphalt concrete mixture oil-stone ratio control device to solve the above problems. SUMMARY

[0004] The main purpose of the present application is to provide an asphalt concrete mixture oil-stone ratio control device, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: The utility model provides an asphalt concrete mixture oil stone ratio regulation device, including fixed installation in the hopper of mixing cylinder top, the top of mixing cylinder is provided with two feeding assembly and two down feeder assembly, the inside of hopper is provided with spreading assembly, the feeding assembly includes feeding cylinder and feeding mechanism, the feeding cylinder and feeding mechanism are equipped with equal number of several, the feeding mechanism is through the drive link rotatory installation outside mixing cylinder, the bottom of feeding cylinder is fixedly connected with the feeding pipe through to the inside of mixing cylinder, the top of feeding cylinder is fixedly connected with the feed pipe, the down feeder assembly includes two flow guide seat fixedly connected in the inside of mixing cylinder, the top of mixing cylinder rotatory installation has the mounting shaft, the outside of mounting shaft is fixedly connected with the drive roll through the connecting block, the outside of drive roll is fixedly connected with two clamping blocks, the outside of clamping block all is clamped with the partition block, the inside wall of mixing cylinder is fixedly connected with two support blocks, the support block all is fixedly connected with the spline main shaft, the inside of drive roll is provided with a plurality of vibration mechanism.

[0006] As a further improvement of the above scheme, the spreading assembly includes a plurality of spreading wheels rotatably installed in the hopper, one end of the spreading wheel penetrating to the outside of the hopper is fixedly connected with a worm gear, the outside of the hopper is fixedly installed with a support seat, the inside of the support seat is rotatably connected with a mounting rod, the outside of the mounting rod is fixedly connected with a plurality of worm gears, the worm gear and the worm gear are meshed with each other.

[0007] As a further improvement of the above scheme, the feeding mechanism includes two eccentric discs fixedly connected between the drive links, a fixed shaft is fixedly installed between the two eccentric discs, a push rod is rotatably installed between the fixed shaft and the support frame, the inside of the feeding cylinder is slidably connected with a piston.

[0008] As a further improvement of the above scheme, the inside of the piston is slidably connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a dosing disc, the top of the connecting rod is slidably installed with a positioning block.

[0009] As a further improvement of the above scheme, the outside of the support frame is fixedly installed with two protective covers, the outside of the protective cover is fixedly installed with a total material pipe, the total material pipe and the feed pipe are in communication with each other.

[0010] As a further improvement of the above scheme, the vibration mechanism includes a mounting sleeve fixedly connected to the inner wall of the drive roll, a plurality of vibration blocks are fixedly connected to the inside of the mounting sleeve through springs.

[0011] As a further improvement of the above scheme, a plurality of limiting rods are fixedly connected to the inside of the mounting sleeve, the vibration blocks are slidably installed on the outside of the limiting rods, and the springs are sleeved on the outside of the limiting rods.

[0012] As a further improvement of the above-mentioned scheme, the outer side of the mixing cylinder is fixedly provided with motor one and motor two, the output end of the motor one is fixedly connected with the mounting shaft, the output end of the motor two is fixedly connected with the driving rod, the outer side of the discharging hopper is fixedly provided with motor three, and the output end of the motor three is fixedly connected with the mounting rod.

[0013] As a further improvement of the above-mentioned scheme, the mounting shafts are drivingly connected through synchronous belt one, and the driving rods are drivingly connected through synchronous belt two.

[0014] Compared with the prior art, the present application has the following beneficial effects: After the stone enters the discharging hopper, the motor three drives the spreading assembly to uniformly distribute the stone, ensuring that it smoothly enters the discharging assembly, the motor two drives the driving roller and the partition block to synchronously rotate through the mounting shaft, quantitatively and uniformly conveying the stone guided by the flow guide seat into the mixing cylinder, and the control system drives the feeding mechanism to accurately spray the petroleum asphalt in the feeding cylinder into the mixing cylinder through the feeding pipe according to the feeding frequency, so as to realize the dynamic regulation of the oil-stone ratio, effectively reduce the stirring resistance, and guarantee the quality of the mixture.

[0015] When the driving roller rotates, the synchronous belt drives the built-in multiple vibration assemblies, the vibration assemblies arranged in a staggered manner vibrate along the guide rod under the support of the spline main shaft, and the vibration energy is transmitted to the surface of the driving roller and the partition block, so as to make the stone tightly fill in the cavity formed by the two, effectively guarantee the consistency of the unit volume stone quality, and realize the double control of the oil-stone ratio in combination with the traditional weighing system, thereby significantly reducing the dynamic measurement error. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0017] Figure 1 It is a schematic view of the overall structure of the present application; Figure 2 It is a schematic view of the structure of the back of the present application; Figure 3 It is a schematic view of the internal structure of the mixing cylinder of the present application; Figure 4 It is a schematic view of the structure of the feeding assembly and the spreading assembly of the present application; Figure 5 It is a schematic view of the structure of the feeding assembly of the present application; Figure 6The partial structure schematic view of the blanking assembly of the present application; Figure 7 The structure schematic view of the guide seat and the driving roller of the present application; Figure 8 The internal structure schematic view of the driving roller of the present application; Figure 9 The structure schematic view of the present application Figure 8 at A in the present application; Figure 10 The structure schematic view of the vibrating mechanism of the present application; Figure 11 The structure schematic view of the feeding mechanism of the present application; Figure 12 The internal structure schematic view of the feeding barrel of the present application; Figure 13 The structure schematic view of the spreading assembly of the present application.

[0018] In the figure: 1, mixing barrel; 2, blanking hopper; 3, feeding assembly; 31, driving rod; 32, feeding barrel; 33, protective cover; 34, feeding mechanism; 341, eccentric disc; 342, push rod; 343, fixed shaft; 344, support frame; 345, piston; 346, positioning block; 347, quantitative disc; 348, connecting rod; 35, feeding pipe; 36, feeding pipe; 4, total material pipe; 5, spreading assembly; 51, spreading wheel; 52, mounting rod; 53, support seat; 54, worm wheel; 55, worm; 6, blanking assembly; 61, guide seat; 62, driving roller; 63, mounting shaft; 64, separation block; 65, clamping block; 66, vibrating mechanism; 661, mounting sleeve; 662, vibrating block; 663, limiting rod; 664, spring; 67, spline main shaft; 68, support block; 69, connecting block; 7, motor one; 8, motor two; 91, synchronous belt one; 92, synchronous belt two; 10, motor three. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0020] Please refer to Figures 1 to 13 The present application provides an embodiment as shown in the figure: The application discloses an asphalt concrete mixture oil-stone ratio regulating device. The outer side of the mixing cylinder 1 is fixedly installed with a motor one 7 and a motor two 8, the output end of the motor one 7 is fixedly connected with the mounting shaft 63, and the output end of the motor two 8 is fixedly connected with the driving rod 31. The outer side of the mixing cylinder 1 is fixedly installed with two protective covers 33, the outer side of the protective cover 33 is fixedly installed with a total material pipe 4, and the total material pipe 4 and the feeding pipe 35 are in communication with each other. The mounting shaft 63 is in driving connection through a synchronous belt one 91, and the driving rod 31 is in driving connection through a synchronous belt two 92.

[0021] In actual application, as shown in Figure 2 , Figure 3 , Figures 6 to 8 shown, the stone enters the discharging hopper 2, is subjected to pre-distribution treatment by the spreading assembly 5, is spread in the discharging hopper 2, and ensures that the stone is uniformly flowed to the two discharging assemblies 6; the guide seat 61 guides the stone to enter a metering cavity formed by the driving roller 62 and the partition block 64, the motor one 7 drives the driving roller 62 to rotate through the mounting shaft 63, and the partition block 64 is utilized to realize quantitative segmentation and conveying of the aggregate. As shown in Figure 8 and Figure 9 , the vibration mechanism 66 built in the driving roller 62 vibrates under the action of the spline main shaft 67, the aggregate compactness in the metering cavity is kept consistent, the volume metering precision is significantly improved, the support block 68 provides stable support for the spline main shaft 67, ensures reliable operation of the vibration mechanism 66, and also can realize support of both ends of the driving roller 62, and ensures the stability of rotation of the driving roller 62. As shown in Figure 4 , Figure 5 andFigure 11 As shown, the motor two 8 synchronously drives two groups of feeding mechanisms 34 through the synchronous belt two 92 and the driving rod 31, so that the asphalt in the feeding barrel 32 is sprayed to the mixing barrel 1 through the feeding pipe 36, the total material pipe 4 continuously supplements the asphalt to the feeding barrel 32 through the feeding pipe 35, the control system accurately controls the action frequency of the feeding mechanism 34 according to the number of rotations of the driving roller 62, and the dynamic matching of the asphalt spraying amount and the aggregate conveying amount is realized. As shown in the figure, Figure 5 The protective cover 33 provides safety protection for the transmission parts, and at the same time guarantees the stable operation environment of the feeding mechanism 34, effectively reduces the matching error, so as to realize the double control of oil and stone ratio combined with the traditional weighing system, significantly reduces the dynamic measurement error, and ensures the quality stability of the mixture. Among them, the synchronous belt one 91 and the synchronous belt two 92 can be adjusted according to actual needs, and can be replaced with a chain wheel structure or other structures with transmission function.

[0022] As shown in the figure, Figure 2 、 Figure 3 、 Figure 5 And Figure 13 The spreading assembly 5 includes a plurality of spreading wheels 51 rotatably installed in the lower hopper 2, one end of the spreading wheel 51 penetrating to the outside of the lower hopper 2 is fixedly connected with a worm gear 54, the outside of the lower hopper 2 is fixedly installed with a support seat 53, the inside of the support seat 53 is rotatably connected with a mounting rod 52, the outside of the mounting rod 52 is fixedly connected with a plurality of worm gears 55, and the worm gear 54 and the worm gear 55 are meshed with each other. The outside of the lower hopper 2 is fixedly installed with a motor three 10, and the output end of the motor three 10 is fixedly connected with the mounting rod 52.

[0023] In actual application, when the motor three 10 is started, the mounting rod 52 is driven to rotate in the support seat 53 through the output shaft, the plurality of worm gears 55 fixedly connected to the outside of the mounting rod 52 are synchronously rotated, the worm gear 54 meshed with the worm gear 55 transmits power to the spreading wheel 51, and a plurality of worm gear mechanisms ensure that all the spreading wheels 51 are synchronously rotated under the driving of the motor three 10. Through the rotation of the spreading wheel 51, the stone in the lower hopper 2 is evenly spread, so that the stone can be evenly distributed and smoothly flow to the lower feeding assembly 6, laying a foundation for subsequent accurate measurement and mixing.

[0024] As shown in the figure, Figure 5 、 Figure 11 And Figure 12As shown, the feeding mechanism 34 comprises two eccentric discs 341 fixedly connected between the driving rods 31, a fixed shaft 343 fixedly installed between the two eccentric discs 341, a push rod 342 rotatably installed between the fixed shaft 343 and the support frame 344, a piston 345 slidably connected inside the feeding cylinder 32, a connecting rod 348 slidably connected inside the piston 345, a positioning block 346 slidably installed at the top of the connecting rod 348, and a fixed amount disc 347 fixedly connected at the bottom of the connecting rod 348.

[0025] In actual application, the motor 8 drives the two eccentric discs 341 to rotate synchronously through the driving rods 31, the fixed shaft 343 moves in a circular motion with the eccentric discs 341, the push rod 342 moves reciprocally under the constraint of the support frame 344, the push rod 342 drives the piston 345 to slide up and down in the feeding cylinder 32, when the piston 345 moves up to a specified position, the petroleum asphalt in the feeding pipe 35 flows into the space between the fixed amount disc 347 and the piston 345, and when the piston 345 moves down, the asphalt is pressed into the mixing cylinder 1 through the feeding pipe 36. The connecting rod 348 and the fixed amount disc 347 form an adjustable volume control mechanism, the position of the fixed amount disc 347 on the connecting rod 348 is adjusted through the positioning block 346, the volume between the piston 345 and the fixed amount disc 347 is changed, and thus the single feeding amount is controlled, the mechanical adjustment of the asphalt supply amount is realized, and the aggregate conveying amount is dynamically matched by the rotation frequency of the driving rods 31, so that the accurate control of the oil stone ratio is ensured.

[0026] As shown in the figure, Figures 8 to 10 The vibration mechanism 66 comprises a mounting sleeve 661 fixedly connected to the inner wall of the driving roller 62, a plurality of vibration blocks 662 fixedly connected inside the mounting sleeve 661 through springs 664, a plurality of limiting rods 663 fixedly connected inside the mounting sleeve 661, the vibration blocks 662 are slidably installed outside the limiting rods 663, and the springs 664 are sleeved outside the limiting rods 663.

[0027] In actual application, when the driving roller 62 rotates, the mounting sleeve 661 fixedly installed on the inner wall of the driving roller 62 rotates synchronously, the vibration blocks 662 inside the mounting sleeve 661 slide outward along the limiting rods 663 under the support of the protruding splines of the spline main shaft 67, the springs 664 sleeved outside the limiting rods 663 are compressed, when the vibration blocks 662 rotate to a specified position with the driving roller 62, the support disappears, the elastic restoring force of the springs 664 pushes the vibration blocks 662 to quickly reset along the limiting rods 663, and high-frequency impact vibration is formed. The vibration energy is transmitted to the driving roller 62 and the partition block 64 through the mounting sleeve 661, prompting the stone particles on the surfaces of the two to rearrange and tightly fill. The staggered distribution design of the multiple sets of vibration mechanisms 66 ensures that the driving roller 62 continuously generates uniform vibration during rotation, effectively eliminates the gaps between the stone particles, and guarantees the consistency of the stone quality per unit volume, providing a basic condition for accurately controlling the oilstone ratio.

[0028] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, preclude the existence of further identical elements in the process, method, article, or apparatus that includes the recited element.

[0029] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. An asphalt concrete mixture asphalt-aggregate ratio control device, comprising a hopper (2) fixedly installed on the top of a mixing drum (1), characterized in that: The top of the mixing cylinder (1) is provided with two feeding assemblies (3) and two discharging assemblies (6). The inside of the discharging hopper (2) is provided with a spreading assembly (5). The feeding assembly (3) includes a feeding cylinder (32) and a feeding mechanism (34). The feeding cylinder (32) and the feeding mechanism (34) are provided in equal numbers. The feeding mechanisms (34) are rotatably installed on the outside of the mixing cylinder (1) through a drive rod (31). The bottom of the feeding cylinder (32) is fixedly connected to a feeding pipe (36) that penetrates into the mixing cylinder (1). The top of the feeding cylinder (32) is fixedly connected to an inlet pipe (35). The discharging assembly... The component (6) includes two guide seats (61) fixedly connected inside the mixing cylinder (1). The top of the mixing cylinder (1) is rotatably mounted with an installation shaft (63). The outer side of the installation shaft (63) is fixedly connected with a drive roller (62) via a connecting block (69). The outer side of the drive roller (62) is fixedly connected with two locking blocks (65). The outer side of each locking block (65) is locked with a partition block (64). The inner wall of the mixing cylinder (1) is fixedly connected with two support blocks (68). The support blocks (68) are fixedly connected with splined spindles (67). The drive roller (62) is provided with multiple vibration mechanisms (66).

2. The asphalt concrete mixture asphalt-aggregate ratio regulating device according to claim 1, characterized in that: The spreading assembly (5) includes multiple spreading wheels (51) rotatably installed inside the hopper (2). One end of each spreading wheel (51) extending to the outside of the hopper (2) is fixedly connected to a worm gear (54). A support base (53) is fixedly installed on the outside of the hopper (2). An installation rod (52) is rotatably connected inside the support base (53). Multiple worms (55) are fixedly connected to the outside of the installation rod (52). The worm gear (54) and the worms (55) mesh with each other.

3. The asphalt concrete mixture asphalt-aggregate ratio regulating device according to claim 1, characterized in that: The feeding mechanism (34) includes two eccentric discs (341) fixedly connected between the drive rod (31), a fixed shaft (343) fixedly installed between the two eccentric discs (341), a push rod (342) rotatably installed between the fixed shaft (343) and the support frame (344), and a piston (345) slidably connected inside the feeding cylinder (32).

4. The asphalt concrete mixture asphalt-aggregate ratio regulating device according to claim 3, characterized in that: The piston (345) is internally slidably connected to a connecting rod (348), the bottom of the connecting rod (348) is fixedly connected to a metering disc (347), and the top of the connecting rod (348) is slidably mounted with a positioning block (346).

5. The asphalt-aggregate ratio regulating device for asphalt concrete mixture according to claim 1, characterized in that: Two protective covers (33) are fixedly installed on the outside of the mixing cylinder (1), and a main material pipe (4) is fixedly installed on the outside of the protective cover (33). The main material pipe (4) is connected to the feed pipe (35).

6. The asphalt-aggregate ratio regulating device for asphalt concrete mixture according to claim 2, characterized in that: The vibration mechanism (66) includes a mounting sleeve (661) fixedly connected to the inner wall of the drive roller (62), and multiple vibration blocks (662) are fixedly connected inside the mounting sleeve (661) by springs (664).

7. The asphalt-aggregate ratio regulating device for asphalt concrete mixture according to claim 6, characterized in that: The mounting sleeve (661) has multiple limiting rods (663) fixedly connected inside. The vibration blocks (662) are all slidably installed on the outside of the limiting rods (663), and the springs (664) are sleeved on the outside of the limiting rods (663).

8. The asphalt-aggregate ratio regulating device for asphalt concrete mixture according to claim 2, characterized in that: Motor 1 (7) and Motor 2 (8) are fixedly installed on the outside of the mixing cylinder (1). The output end of Motor 1 (7) is fixedly connected to the mounting shaft (63), and the output end of Motor 2 (8) is fixedly connected to the drive rod (31). Motor 3 (10) is fixedly installed on the outside of the hopper (2). The output end of Motor 3 (10) is fixedly connected to the mounting rod (52).

9. The asphalt-aggregate ratio regulating device for asphalt concrete mixture according to claim 1, characterized in that: The mounting shafts (63) are connected by a synchronous belt (91), and the drive rods (31) are connected by a synchronous belt (92).

Images