Automated asphalt mixture paving and loading device and method

Abstract

An automated asphalt mixture paving and loading device and method, the device comprising: a sliding material distribution hopper (1) located at an upper portion of an operating box; a sectional material box (2), which is connected to a lower portion of the sliding material distribution hopper (1) and can be added, reduced and disassembled, wherein a vibration press plate (31) is provided at the rear of the sectional material box (2); and at least one jacking rod (19), wherein each jacking rod (19) is connected to a fixing plate (27); a synchronous bottom plate (26) is provided below the fixing plate (27), and an intermediate plate (28) is provided above the fixing plate (27); a lifting top plate (30) is further provided at an upper portion of the intermediate plate (28); the synchronous bottom plate (26), the intermediate plate (28) and the lifting top plate (30) are all connected to the fixing plate (27) by means of a lifter (29), so as to realize relative vertical motion among the synchronous bottom plate (26), the intermediate plate (28) and the lifting top plate (30) under the drive of the lifter (29); a test mold to be tested is placed on the lifting top plate (30); and an electrical control box (6) is connected to a control panel (5) and the operating box, so as to provide electrical connection and transmission communication. The automation of an asphalt mixture testing operation is perfected, thereby improving the performance stability and precision control for an asphalt mixture.

Description

Automated asphalt mixture paving and loading device and method Technical Field

[0001] The present invention belongs to the technical field of asphalt mixture testing equipment, and in particular relates to an automatic asphalt mixture paving and loading device and method. Background Art

[0002] Currently, the vast majority of high-grade highways utilize asphalt pavement. As the primary pavement material for high-grade highways, the technical quality of asphalt mixtures is crucial to both the level of highway transportation construction and economic and social development. To ensure the technical performance of asphalt mixtures, performance tests such as Marshall tests, rutting tests, beam bending tests, and freeze-thaw splitting tests are frequently conducted during asphalt mixture design, construction, and quality inspection. These tests first require the mixed asphalt mixture to be placed in appropriate test molds, such as Marshall and rutting molds. These molds are then molded into test pieces of the appropriate specifications. These tests evaluate the physical and mechanical properties of the asphalt mixture, thereby ensuring the service performance and longevity of the asphalt pavement.

[0003] However, the current test mold loading process is performed manually with a shovel in multiple steps. This not only fails to simulate the pavement paving construction process, resulting in incomparability between indoor tests and field applications, but also lags far behind the level of on-site mechanized construction. As a result, indoor test results cannot accurately reflect the quality of on-site construction, and may even hinder the development and advancement of asphalt pavement construction technology and processes. Furthermore, traditional manual methods, due to the small amount of material loaded at a time, cannot ensure uniform sampling. This results in significant variability in the composition of the mixture loaded into the test mold, leading to segregation of coarse and fine aggregate or asphalt content between specimens. This affects the structural composition of the molded specimens, resulting in significant differences in volumetric, mechanical, and road performance indicators between the molded specimens. The test results cannot accurately reflect the design level, construction quality, and service performance of actual asphalt pavements, seriously hindering the technological advancement and innovation of asphalt pavements.

[0004] Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides an automated asphalt mixture paving and loading device and method, which integrates paving and loading, reduces manual operation, improves the automation of asphalt mixture test operations, and improves the performance stability and precision control of asphalt mixture.

[0006] An embodiment of one aspect of the present invention provides an automated asphalt mixture paving and loading device, comprising: a working box, a material spreading mechanism, a lifting mechanism, a control panel, and an electric control box, wherein:

[0007] The material distribution mechanism includes: a sliding material distribution hopper located on the upper part of the working box, a detachable segmented material box connected to the lower part of the sliding material distribution hopper, and a vibrating pressure plate provided at the rear of the segmented material box; the material distribution mechanism is connected to a ball screw to achieve forward and backward movement on the working box;

[0008] The lifting mechanism includes: at least one lifting rod, each of the lifting rods is connected to a fixed plate, a synchronous bottom plate is provided below the fixed plate, an intermediate plate is provided above the fixed plate, and a lifting top plate is further provided on the upper part of the intermediate plate, the synchronous bottom plate, the intermediate plate and the lifting top plate are all connected to the fixed plate through an elevator, so that the synchronous bottom plate, the intermediate plate and the lifting top plate can achieve relative vertical movement between them under the drive of the elevator; a test mold to be tested is placed on the lifting top plate;

[0009] The electrical control box is connected to the control panel and the working box to provide electrical connection and transmission communication between the control panel and the working box. The control panel is used to provide the user with an operation console to automatically control and monitor data of the paving and loading process according to the user's instructions.

[0010] Preferably, a sliding mechanism is provided below the sliding distribution hopper, the sliding mechanism comprising a slide bar and a slider, the sliding distribution hopper is mounted on the slide bar and moves laterally on the slide bar via the slider.

[0011] In any of the above solutions, preferably, the segmented material box includes at least one tooling material box, and the upper and lower adjacent tooling material boxes are detachably connected to each other, and a retractable movable baffle is provided at the front of the lowest tooling material box to prevent the material from sliding forward during paving;

[0012] A trowel plate and a trowel heater are provided at the rear of the lowest tooling material box in the segmented material box to perform preliminary leveling on the mixed material spread in the front.

[0013] In any of the above schemes, it is preferred that a vibration heater and a vibration motor are provided on the vibration pressing plate to heat and vibrate the preliminarily leveled mixture so that the mixture is densely packed.

[0014] In any of the above schemes, it is preferred that the ball screw is connected to the first synchronous pulley and the second synchronous pulley, and moves back and forth under the drive of the horizontal moving motor; one end of the ball screw is provided with a first screw bearing seat, and the other end is provided with a second screw bearing seat, and the ball screw is further provided with a screw nut.

[0015] In any of the above schemes, it is preferred that the elevator is connected to the lifting motor so as to move in the vertical direction under the drive of the lifting motor; the lifting rod is connected to the micro-handle, and the micro-handle rotates under the operation of the user to drive the lifting rod to move in the vertical direction.

[0016] In any of the above schemes, it is preferred that a pad block box is placed on the lifting top plate, the pad block box is located behind the test mold, and two fixing clamps are provided behind the pad block box to fix the test mold and the pad block box on the lifting top plate, and the pad block box is used to recycle the mixture.

[0017] Another embodiment of the present invention provides an automated asphalt mixture paving and loading method, comprising the following steps:

[0018] Step S1: Start the equipment. The control panel receives a user's control command, selects a paving test piece mode to be executed this time according to the control command, configures the operating parameters corresponding to the selected mode for the automated asphalt mixture paving and loading device, and sets the preheating temperature and paving speed according to the asphalt mixture type; and starts heating and preheating.

[0019] Step S2: placing the test mold to be tested on the lifting top plate or lifting rod according to the selected paving specimen mode;

[0020] Step S3, adjusting the height of the lifting top plate or the lifting rod according to the height of the trial mold to adjust to a suitable virtual paving height;

[0021] Step S4: Estimate the amount of mixture required based on the size of the test mold, set the number of tooling bins for the segmented bins, and load the pre-mixed asphalt mixture into the sliding distribution hopper;

[0022] Step S5, turning on the vibration motor, pausing before the material starts to enter the test mold, adjusting the movable baffle in front of the tooling material box so that the movable baffle is close to the bottom of the test mold, and then running to spread the material into the test mold. The vibration of the vibration motor will vibrate and compact the mixed material;

[0023] Step S6: After the material is laid, the movable baffle is raised again, the sliding material hopper, the segmented material box and the vibration motor are returned to their initial positions, and the excess material is recovered through the pad box;

[0024] Step S7: take out the trial molds, place them on corresponding molding machines for molding, and clean the equipment.

[0025] Preferably, when the paving specimen mode is selected as the rutting specimen mode, the paving and loading method includes the following steps:

[0026] Step A1: Start the equipment. The control panel receives a user's control command, selects the rutting test mode as the paving test mode according to the control command, configures the operating parameters corresponding to the rutting test mode, and sets the preheating temperature and paving speed according to the asphalt mixture type; and starts preheating.

[0027] Step A2: placing the rutting mold and a block box on a lifting top plate, wherein two block boxes are placed in front of and behind the rutting mold respectively; at the beginning of the paving section, using the block box located in front of the rutting mold to recycle the material at the beginning of the paving section;

[0028] Step A3, under the control of the lifting command issued by the control panel, adjusting the lifting top plate to a suitable virtual paving height according to the height of the rutting test mold;

[0029] Step A4: estimating the amount of mixture required based on the size of the rutting test mold, setting the number of tooling bins for the segmented bins, and loading the pre-mixed asphalt mixture into the sliding distribution hopper;

[0030] Step A5: Turn on the vibration motor, pause before the material starts to enter the rutting mold, adjust the movable baffle in front of the tooling material box so that the movable baffle is close to the bottom of the rutting mold, and then run the machine to spread the material into the rutting mold. The vibration of the vibration motor will compact the mixture.

[0031] Step A6: After the material is laid, the movable baffle is raised again, the sliding material hopper, the segmented material box and the vibration motor are returned to their initial positions, and the excess material is recovered through the pad box located behind the rutting test mold;

[0032] Step A7, taking out the rutting test mold, placing the rutting test mold on a roller compactor, compacting the mold into shape by the roller compactor, and cleaning the equipment.

[0033] In any of the above solutions, preferably, when the paving specimen mode is selected as the Marshall specimen mode, the paving and loading method includes the following steps:

[0034] Step B1: Start the equipment. The control panel receives a user's control command, selects the Marshall specimen mode as the paving specimen mode for execution according to the control command, configures the operating parameters corresponding to the Marshall specimen mode, and sets the preheating temperature and paving speed according to the asphalt mixture type; and starts preheating.

[0035] Step B2, placing the Marshall trial mold on the lifting rod, including: first placing the trial mold piece of the Marshall trial mold, then placing the sleeve, and then buckling the washer on the lifting rod, wherein the sleeve is sleeved outside the washer;

[0036] Step B3, placing a Marshall mold paving tooling material box and a cushion block box on the lifting top plate, and the cushion block box is placed behind the Marshall mold paving tooling material box;

[0037] Step B4, under the control of the lifting command issued by the control panel, adjusting the lifting top plate to a suitable virtual laying height according to the height of the Marshall test mold;

[0038] Step B5, adjusting the height of the jacking rod by fine-tuning the hand wheel so that the top of the sleeve of the Marshall trial mold located on the jacking rod and the bottom of the tooling material box are maintained at the same level;

[0039] Step B6: estimating the amount of mixture required based on the size of the Marshall test mold, setting the number of tooling bins for the segmented bins, and loading the pre-mixed asphalt mixture into the sliding distribution hopper;

[0040] Step B7: Turn on the vibration motor, pause before the material starts to enter the Marshall mold, adjust the movable baffle in front of the tooling material box so that the movable baffle is close to the bottom of the Marshall mold, and then run the machine to place the material into the Marshall mold. The vibration of the vibration motor will compact the mixed material.

[0041] Step B8: After the material is laid, the movable baffle is raised again, the sliding material hopper, the segmented material box and the vibration motor are returned to their initial positions, and the excess material is recovered through the pad box located behind the Marshall test mold;

[0042] Step B9, under the control of the control panel, the lifting top plate descends to achieve loading in the Marshall trial mold;

[0043] Step B10: After the Marshall trial mold is fully loaded with material, a trial mold cover is placed on the top surface of the Marshall trial mold to prevent material from leaking into the Marshall trial mold during subsequent operations;

[0044] Step B11, remove the tooling material box, take out the Marshall test mold, place the Marshall test mold on the Marshall compactor, compact and shape it through the Marshall compactor, and clean the equipment.

[0045] The automated asphalt mixture paving and loading device and method according to the embodiments of the present invention have the following beneficial effects:

[0046] (1) By simulating the on-site paving operation of the mixture, the paving material is directly loaded into the test mold using automated control, realizing the integrated operation of paving and loading, avoiding the process gap, human error, technical defects and unevenness caused by manual loading, and being beneficial to the stability of the asphalt mixture performance test.

[0047] (2) A large amount of material can be spread at one time, which reduces the segregation problem caused by a small amount of material being loaded at one time (for example, manual loading of the Marshall test mold), and effectively improves the uniformity and stability of the sampling load.

[0048] (3) Compared with manually loading Marshall test molds one by one, the present invention can spread and load multiple Marshall test molds at one time, which not only saves time and labor, but also makes the sampling more representative.

[0049] (4) The present invention integrates paving and loading, reduces manual operation, improves the automation of asphalt mixture test operation, and improves the performance stability and precision control of asphalt mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a front view of an automated asphalt mixture paving and loading device according to an embodiment of the present invention.

[0051] FIG2 is a front side view of an automated asphalt mixture paving and loading device according to an embodiment of the present invention.

[0052] FIG3 is a top view of an automated asphalt mixture paving and loading device according to an embodiment of the present invention.

[0053] FIG4 is a schematic structural diagram of an automated asphalt mixture paving and loading device according to an embodiment of the present invention.

[0054] FIG5 is a cross-sectional view of an automated asphalt mixture paving and loading device according to an embodiment of the present invention.

[0055] FIG6 is a rear side view of the automated asphalt mixture paving and charging device according to an embodiment of the present invention.

[0056] FIG7 is a flow chart of a rutting mold paving and loading process according to an embodiment of the present invention.

[0057] FIG8 is a flow chart of a Marshall trial mold paving and loading process according to an embodiment of the present invention.

[0058] Reference numerals:

[0059] 1- Sliding feeding hopper; 2- Segmented material box; 3- Horizontal moving motor; 4- Fine adjustment hand wheel; 5- Control panel; 6- Electric control box; 7- Proximity switch; 8- Vibration motor; 9- Linear bearing; 10- First lead screw bearing seat; 11- Lead screw nut; 12- Ball screw; 13- Positioning block; 14- Second lead screw bearing seat; 15- Level ruler; 16- Slide bar; 17- Slider; 18- Movable baffle; 19- Lifting rod; 20- Ruler; 21- First synchronous pulley A; 22- Second synchronous pulley B; 23- Limit switch; 24- Lifting motor; 25- Steering gear; 26- Synchronous bottom plate; 27- Fixed plate; 28- Middle plate; 29- Lifter; 30- Lifting top plate; 31- Vibration pressure plate; 32- Vibration heater; 33- Smoothing heater; 34- Adjusting nut; 35- Spring; 36- Guide column; 37- Fixing clamp. DETAILED DESCRIPTION

[0060] In order to further understand the content of the present invention, the present invention will be described in detail below with reference to specific embodiments.

[0061] As shown in FIG. 1 to FIG. 6 , an embodiment of the present invention provides an automated asphalt mixture paving and loading device, comprising: a working box, a spreading mechanism, a lifting mechanism, a control panel, and an electric control box.

[0062] Specifically, the material distribution mechanism includes: a sliding material distribution hopper 1, a segmented material box 2 and a vibrating pressure plate 31.

[0063] The sliding material distribution hopper 1 is arranged on the upper part of the working box. The lower part of the sliding material distribution hopper 1 is connected to a sectional material box 2 that can be increased or decreased and disassembled. The rear part of the sectional material box 2 is provided with a vibrating pressure plate 31.

[0064] The base of the work box is provided with 4 adjustable supports, and the work box is provided with a level ruler 15, which is used to adjust the level of the work box. A proximity switch 7 is installed on one side of the work box, which is used to realize the limit and automatic protection functions.

[0065] A sliding mechanism is provided below the sliding distribution hopper 1. The sliding mechanism comprises a slide bar 16 and a slider 17. The sliding distribution hopper 1 is mounted on the slide bar 16 and moves laterally on the slide bar 16 via the slider 17. The raw mixed material enters the segmented material bin 2 through the sliding distribution hopper 1 to start the loading and paving process.

[0066] The segmented hopper 2 includes at least one tooling hopper, with upper and lower adjacent tooling hoppers detachably connected. A retractable baffle 18 is installed at the front of the lowest tooling hopper to prevent material from sliding forward during paving. A trowel plate and trowel heater 33 are installed at the rear of the lowest tooling hopper in the segmented hopper 2 to provide preliminary leveling for the paved mix.

[0067] The vibrating platen 31 is equipped with a vibrating heater 32 and a vibrating motor 8, which heat and vibrate the mixed material after it has been initially leveled by the trowel, thereby compacting the material. The vibrating platen 31 is connected to the fixed plate via an adjusting nut 34, a spring 35, and a guide post 36. The vibrating motor 8 slides via linear bearings 9, moving with the sliding hopper 1 and segmented hopper 2 during paving. It returns to its initial position after paving is complete.

[0068] The material distribution mechanism, composed of a sliding material distribution hopper 1, a segmented material box 2, and a vibrating pressure plate 31, is connected to a ball screw 12 for forward and backward movement. Specifically, the ball screw 12 is connected to a first synchronous pulley 21 and a second synchronous pulley 22, and is driven by a horizontal motion motor 3 for forward and backward movement. A first screw bearing seat 10 is located at one end of the ball screw 12, and a second screw bearing seat 14 is located at the other end. A screw nut 11 is also provided within the ball screw 12.

[0069] The lifting mechanism includes: a fine-tuning hand wheel 4, a lifting rod 19, a scale 20, a limit switch 23, a lifting motor 24, a steering gear 25, a synchronous base plate 26, a fixed plate 27, an intermediate plate 28, a lifter 29, and a lifting top plate 30.

[0070] Specifically, the lifting mechanism includes at least one lifting rod 19, each connected to a fixed plate 27. A synchronous base plate 26 is located below the fixed plate, an intermediate plate 28 is located above the fixed plate 27, and a lifting top plate 30 is located above the intermediate plate 28. The synchronous base plate 26, intermediate plate 28, and lifting top plate 30 are all connected to the fixed plate 27 via an elevator 29. Driven by the elevator 29, the synchronous base plate 26, intermediate plate 28, and lifting top plate 30 can achieve relative vertical movement. During paving and loading, a test mold to be tested is placed on the lifting top plate 30.

[0071] In the embodiment of the present invention, the lifter 29 is connected to the lift motor 24 to move vertically under the drive of the lift motor 24, with kinetic energy provided by the lift motor 24. The lift rod 19 is connected to the micro-handle 4, which rotates under the operation of the user to drive the lift rod 19 to move vertically.

[0072] A block box is placed on the lifting top plate 30 and is located behind the test mold. Two fixing clamps 37 are provided behind the block box to fix the test mold and the block box on the lifting top plate. The block box can be used to recycle the mixed material.

[0073] The electric control box 6 is connected to the control panel 5 and the working box to provide electrical connection and transmission communication between the control panel 5 and the working box, that is, the electric control box 6 connects the control panel 5 and the working box.

[0074] The control panel 5 provides the user with an operational console for automatically controlling and monitoring the paving and loading process according to user commands. Specifically, the control panel 5 receives user commands and transmits them to other components to control their actions. Furthermore, the control panel 5 features a user interface that allows users to view equipment operating parameters in real time, providing real-time monitoring capabilities.

[0075] An embodiment of the present invention further provides a paving and loading method for an automated asphalt mixture paving and loading device, comprising the following steps:

[0076] Step S1: Start the equipment. The control panel 5 receives the user's control command, selects the paving test mode to be executed, configures the operating parameters corresponding to the selected mode for the automated asphalt mixture paving and loading device, and sets the preheating temperature and paving speed according to the asphalt mixture type. Preheating begins.

[0077] In embodiments of the present invention, the paving specimen mode is, for example, a rutting specimen mode or a Marshall specimen mode. It should be noted that the paving specimen mode is not limited to the above examples and can be set to other modes based on actual testing requirements. Each paving specimen mode is pre-configured with corresponding operating parameters.

[0078] Step S2: placing the test mold to be tested on the lifting top plate 30 or the lifting rod 19 according to the selected paving test piece mode.

[0079] Step S3, adjusting the height of the lifting top plate 30 or the lifting rod 19 according to the height of the trial mold to adjust to a suitable virtual laying height.

[0080] Step S4 , estimating the amount of mixture according to the size of the trial mold, setting the number of tooling boxes of the segmented material box 2 , and loading the pre-mixed asphalt mixture into the sliding distribution hopper 1 .

[0081] Step S5, turn on the vibration motor 8, pause before the material starts to enter the test mold, adjust the movable baffle in front of the tooling material box so that the movable baffle 18 is close to the bottom of the test mold, and then run the material into the test mold. The vibration of the vibration motor 8 will compact the mixture.

[0082] Step S6, after the material is spread, the movable baffle 18 is raised again, the sliding material hopper 1, the segmented material box 2 and the vibration motor 8 are returned to the initial position, and the excess material is recovered through the pad box.

[0083] Step S7: Take out the test molds, place them on the corresponding molding machines for molding, and clean the equipment.

[0084] The paving and loading process of the rutting test mold will be described below with reference to FIG7 .

[0085] When the rutting specimen mode is selected as the paving specimen mode, the paving and loading method includes the following steps:

[0086] Step A1: Start the equipment. The control panel 5 receives the user's control command and selects the rutting test mode for the paving test. The corresponding operating parameters are configured, and the preheating temperature and paving speed are set according to the asphalt mixture type. Preheating begins.

[0087] In step A2, the rutting mold and block boxes are placed on the lifting top plate 30. Two block boxes are placed in front of and behind the rutting mold. At the start of paving, the block box in front of the rutting mold is used to recycle the starting material. This prevents poor representation of the starting material due to insufficient or uneven heating, allowing the middle section of material to be loaded into the rutting mold.

[0088] In an embodiment of the present invention, the rutting test mold is a square, and its length and width are preferably 30 cm.

[0089] The block boxes are rectangular and open at the top. The box behind the rutting mold is the same size as the mold, while the box in front of the mold is slightly smaller. The mold and block boxes are secured to the lifting top plate 30 using retaining clips 37. Keeping the mold in the center as much as possible ensures more even loading.

[0090] Step A3: Under the control of the lifting command issued by the control panel 5, the lifting top plate 30 is adjusted to a suitable virtual paving height according to the height of the rutting test mold.

[0091] Step A4, estimating the amount of mixture according to the size of the rutting test mold, setting the number of tooling boxes of the segmented material box 2, and loading the pre-mixed asphalt mixture into the sliding distribution hopper 1.

[0092] Step A5: Turn on the vibration motor 8 and pause before the material begins to enter the rutting mold. Adjust the movable baffle 18 in front of the tooling material box to position it as close to the bottom of the rutting mold as possible before continuing to lay the material into the rutting mold. Because the mixture falls vertically, the movable baffle 18 blocks the mixture from flowing forward, ensuring a more complete filling of the mixture. After paving, the vibration of the vibration motor 8 compacts the mixture.

[0093] Step A6: After the material is laid, the movable baffle 18 is raised again, the sliding material hopper 1, the segmented material box 2 and the vibration motor 8 are returned to the initial position, and the excess material is recovered through the pad box located behind the rutting test mold.

[0094] Step S7, taking out the rutting test mold, placing the rutting test mold on the roller compactor, rolling it into shape by the roller compactor, and cleaning the equipment for next use.

[0095] The paving and loading process of the Marshall test mold will be described below with reference to FIG8 .

[0096] When the Marshall specimen mode is selected, the paving and loading method includes the following steps:

[0097] Step B1: Start the equipment. The control panel 5 receives the user's control command and selects the Marshall specimen mode for the paving specimen to be executed. The operating parameters corresponding to the Marshall specimen mode are configured, and the preheating temperature and paving speed are set according to the asphalt mixture type. Preheating begins.

[0098] Step B2, placing the Marshall mold on the jacking rod 19, includes: arranging the platform, placing the corresponding Marshall test piece washers, molds, and sleeves on the jacking rod 19 according to the requirements of the large and small Marshall molds, and connecting them to the jacking rod 19. It should be noted that the Marshall molds are cylindrical and have different diameters. In the same test, Marshall molds of different sizes can be used for paving and loading simultaneously.

[0099] First place the test mold of the Marshall test mold, then place the sleeve, and then buckle the washer on the lifting rod, and the sleeve is placed on the outside of the washer.

[0100] In an embodiment of the present invention, the size of the spacer box used in the Marshall test piece mode is the same as the size of the spacer box located at the front end of the rutting test mold in the rutting test piece mode.

[0101] Step B3: Place the Marshall mold paving tooling material box and the cushion block box on the lifting top plate 30, and place the cushion block box behind the Marshall mold paving tooling material box.

[0102] Step B4: Under the control of the lifting command issued by the control panel 5, the lifting top plate 30 is adjusted to a suitable virtual laying height according to the height of the Marshall test mold.

[0103] In step B5, adjust the height of the lifting rod 19 using the fine-tuning handwheel 4 so that the top of the sleeve of the Marshall test mold, located on the lifting rod 19, is flush with the bottom of the tooling box. Specifically, a washer is placed on the lifting rod 19, and the sleeve is positioned over the washer, so that both are flush with the bottom of the tooling box.

[0104] Step B6, estimating the amount of mixture according to the size of the Marshall test mold, setting the number of tooling boxes of the segmented material box 2, and loading the pre-mixed asphalt mixture into the sliding distribution hopper 1.

[0105] Step B7: Turn on the vibration motor 8. Pause before the material begins to enter the Marshall mold. Adjust the movable baffle 18 in front of the tooling material box so that it approaches the bottom of the Marshall mold. Continue placing the material into the Marshall mold. Because the mixture falls vertically, the movable baffle 18 blocks its forward flow, ensuring a more complete filling. After paving, the vibration of the vibration motor 8 compacts the mixture.

[0106] Step B8: After the material is laid, the movable gear 18 is raised again, and the sliding material hopper 1, the segmented material box 2 and the vibration motor 8 are returned to the initial position, and the excess material is recovered through the pad box located behind the Marshall test mold;

[0107] In step B9, the lifting plate 30 is lowered under the control of the control panel 5 to load the Marshall mold. During the loading process of the Marshall mold, the tooling material box moves downward to load the material into the Marshall mold, realizing the integration of paving and loading.

[0108] In step B10, after the Marshall mold is fully loaded with material, a mold cover is placed on top of the mold to prevent material from leaking into the mold during subsequent operations. This is because after loading, the tooling material box is removed before the Marshall mold is removed. This process can cause some material to accidentally leak into the Marshall mold. To prevent this, a mold cover is placed on top of the Marshall mold to prevent material from entering the mold.

[0109] Step B11, remove the tooling material box, take out the Marshall test mold, place the Marshall test mold on the Marshall compactor, compact it into shape through the Marshall compactor, and clean the equipment for next use.

[0110] The automated asphalt mixture paving and loading device and method of the embodiments of the present invention simulate on-site paving operations of the mixture and use automated control to directly load the paved material into a test mold, thereby realizing the integrated operation of paving and loading, avoiding the process gaps, human errors, technical defects and unevenness caused by manual loading, and being beneficial to the stability of asphalt mixture performance testing.

[0111] Special Note: The technical solution of this invention involves numerous parameters, and the synergistic effects between these parameters must be comprehensively considered to achieve the beneficial effects and significant improvements of this invention. Furthermore, the value ranges of each parameter in the technical solution were obtained through extensive testing. The inventors have recorded extensive experimental data for each parameter and their combinations. Due to space limitations, the specific experimental data will not be disclosed here.

[0112] Those skilled in the art will readily understand that the automated asphalt mixture paving and loading device and method of the present invention encompass any combination of the components described in the Summary and Detailed Description sections of the present invention specification, as well as the components illustrated in the accompanying drawings. Due to space limitations and to maintain clarity, not all of the various solutions resulting from these combinations are described. Any modifications, equivalent substitutions, and improvements within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An automated asphalt mixture paving and loading device, characterized in that: include: Working box, fabric mechanism, lifting mechanism, control panel and electric control box, among which, The material distribution mechanism comprises: a sliding material distribution hopper located on the upper part of the working box, a sectional material box which can be increased, decreased or disassembled is connected to the lower part of the sliding material distribution hopper, and a vibrating pressure plate is provided at the rear of the sectional material box; the material distribution mechanism is connected to a ball screw to realize forward and backward movement on the working box; The lifting mechanism comprises: at least one lifting rod, each of which is connected to a fixed plate, a synchronous bottom plate is provided below the fixed plate, an intermediate plate is provided above the fixed plate, and a lifting top plate is further provided on the upper part of the intermediate plate, the synchronous bottom plate, the intermediate plate and the lifting top plate are all connected to the fixed plate through a lifter, so that the synchronous bottom plate, the intermediate plate and the lifting top plate can realize relative movement in vertical positions under the drive of the lifter; a test mold to be tested is placed on the lifting top plate; The electrical control box is connected to the control panel and the working box to provide electrical connection and transmission communication between the control panel and the working box. The control panel is used to provide an operation console for the user to automatically control and monitor the data of the paving and loading process according to the user's instructions.

2. The automatic asphalt mixture paving and loading device according to claim 1, characterized in that: A sliding mechanism is provided below the sliding material distribution hopper, and the sliding mechanism comprises a sliding bar and a sliding block. The sliding material distribution hopper is mounted on the sliding bar and moves transversely on the sliding bar through the sliding block.

3. The automatic asphalt mixture paving and loading device according to claim 1, characterized in that: The segmented material box includes at least one tooling material box, and the upper and lower adjacent tooling material boxes are detachably connected in combination, and a retractable movable baffle is provided at the front of the lowest tooling material box to prevent the material from sliding forward during the paving process; A trowel plate and a trowel heater are provided at the rear of the lowest tooling material box in the segmented material box to perform preliminary leveling on the mixed material spread in front.

4. The automatic asphalt mixture paving and loading device according to claim 1, characterized in that: The vibration platen is provided with a vibration heater and a vibration motor to heat and vibrate the preliminarily leveled mixture so that the mixture is compacted.

5. The automatic asphalt mixture paving and loading device according to claim 1, characterized in that: The ball screw is connected to the first synchronous pulley and the second synchronous pulley, and moves forward and backward under the drive of the horizontal moving motor; a first screw bearing seat is provided at one end of the ball screw, and a second screw bearing seat is provided at the other end, and a screw nut is further provided on the ball screw.

6. The automated asphalt mixture paving and loading device according to claim 1, characterized in that: The lifter is connected to the lift motor so as to move in the vertical direction under the drive of the lift motor; the lift rod is connected to the micro-handle, and the micro-handle rotates under the operation of the user to drive the lift rod to move in the vertical direction.

7. The automated asphalt mixture paving and loading device according to claim 1, characterized in that: A block box is placed on the lifting top plate, and the block box is located behind the test mold. Two fixing clamps are provided behind the block box to fix the test mold and the block box on the lifting top plate. The block box is used to recycle the mixed material.

8. A paving and loading method using the automated asphalt mixture paving and loading device according to any one of claims 1 to 7, characterized in that: The steps include: Step S1, start the equipment, the control panel receives the user's control command, selects the paving specimen mode to be executed this time according to the control command, configures the working parameters corresponding to the selected mode for the automatic asphalt mixture paving and loading device, and sets the preheating temperature and paving operation speed according to the asphalt mixture type; starts heating and preheating; Step S2, placing the test mold to be tested on the lifting top plate or the lifting rod according to the selected paving specimen mode; Step S3, adjusting the height of the lifting top plate or the lifting rod according to the height of the trial mold to adjust to a suitable virtual paving height; Step S4, estimating the amount of mixture according to the size of the trial mold, setting the number of tooling boxes of the segmented material box, and loading the pre-mixed asphalt mixture into the sliding distribution hopper; Step S5, turning on the vibration motor, pausing before the material starts to enter the test mold, adjusting the movable baffle in front of the tooling material box so that the movable baffle is close to the bottom of the test mold, and then running to spread the material into the test mold, and the vibration of the vibration motor will vibrate the mixed material; Step S6, after the material is laid, the movable baffle is raised again, the sliding material hopper, the segmented material box and the vibration motor are returned to the initial position, and the excess material is recovered through the pad box; Step S7, taking out the trial molds, placing the trial molds on corresponding molding machines for molding, and cleaning the equipment.

9. The paving and loading method of the automated asphalt mixture paving and loading device according to claim 8, characterized in that: When the paving specimen mode is selected as the rutting specimen mode, the paving and loading method comprises the following steps: Step A1, start the equipment, the control panel receives the user's control command, selects the paving test mode to be executed this time as the rutting test mode according to the control command, configures the working parameters corresponding to the rutting test mode, and sets the preheating temperature and paving operation speed according to the asphalt mixture type; starts heating and preheating; Step A2, placing the rutting test mold and the cushion block box on the lifting top plate, wherein the cushion block boxes are two, respectively placed in front of and behind the rutting test mold; at the starting section of paving, the cushion block box located in front of the rutting test mold is used to recycle the materials at the starting section; Step A3, under the control of the lifting command issued by the control panel, adjusting the lifting top plate to a suitable virtual paving height according to the height of the rutting test mold; Step A4, estimating the amount of the mixture according to the size of the rutting test mold, and setting the number of tooling boxes of the segmented box. Load the pre-mixed asphalt mixture into the sliding distribution hopper; Step A5, turning on the vibration motor, pausing before the material starts to enter the rutting test mold, adjusting the movable baffle in front of the tooling material box so that the movable baffle is close to the bottom of the rutting test mold, and then running the material into the rutting test mold, and the vibration of the vibration motor will compact the mixture; Step A6, after the material is laid, the movable baffle is raised again, the sliding material hopper, the segmented material box and the vibration motor are returned to the initial position, and the excess material is recovered through the pad box located behind the rutting test mold; Step A7, taking out the rutting test mold, placing the rutting test mold on a roller compactor, compacting the mold by the roller compactor, and cleaning the equipment.

10. The paving and loading method of the automated asphalt mixture paving and loading device according to claim 8, characterized in that: When the paving specimen mode is selected as the Marshall specimen mode, the paving loading method comprises the following steps: Step B1, start the equipment, the control panel receives the user's control command, selects the Marshall specimen mode as the paving specimen mode according to the control command, configures the working parameters corresponding to the Marshall specimen mode, and sets the preheating temperature and paving operation speed according to the asphalt mixture type; starts heating and preheating; Step B2, placing the Marshall test mold on the lifting rod, including: first placing the test mold piece of the Marshall test mold, then placing the sleeve, and then buckling the washer on the lifting rod, and the sleeve is sleeved on the outside of the washer; Step B3, placing a Marshall mold trial paving tooling material box and a cushion block box on the lifting top plate, and the cushion block box is placed behind the Marshall mold trial paving tooling material box; Step B4, under the control of the lifting command issued by the control panel, adjusting the lifting top plate to a suitable virtual laying height according to the height of the Marshall test mold; Step B5, adjusting the height of the lifting rod by fine-tuning the hand wheel so that the top of the sleeve of the Marshall test mold located on the lifting rod and the bottom of the tooling material box are maintained at the same horizontal plane; Step B6, estimating the amount of mixture according to the size of the Marshall test mold, setting the number of tooling boxes of the segmented material box, and loading the pre-mixed asphalt mixture into the sliding distribution hopper; Step B7, turning on the vibration motor, pausing before the material starts to enter the Marshall test mold, adjusting the movable baffle in front of the tooling material box so that the movable baffle is close to the bottom of the Marshall test mold, and then running to spread the material into the Marshall test mold, and the vibration of the vibration motor will vibrate the mixture; Step B8, after the material laying is completed, the movable baffle is raised again, the sliding material feeding hopper, the segmented material box and the vibration motor are all returned to the initial position, and the excess material is recovered through the pad box located behind the Marshall test mold; Step B9, under the control of the control panel, the lifting top plate descends to achieve loading in the Marshall trial mold; Step B10, after the Marshall test mold is fully loaded with material, a test mold cover plate is placed on the top surface of the Marshall test mold to prevent material from leaking into the Marshall test mold during subsequent operations; Step B11, remove the tooling material box, take out the Marshall test mold, place the Marshall test mold on the Marshall compactor, compact and shape it through the Marshall compactor, and clean the equipment.

Images