CN113049341A - Indoor rolling forming device for asphalt mixture and test piece manufacturing method - Google Patents
Indoor rolling forming device for asphalt mixture and test piece manufacturing method Download PDFInfo
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- CN113049341A CN113049341A CN202110386177.XA CN202110386177A CN113049341A CN 113049341 A CN113049341 A CN 113049341A CN 202110386177 A CN202110386177 A CN 202110386177A CN 113049341 A CN113049341 A CN 113049341A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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Abstract
The invention relates to an indoor rolling forming device for asphalt mixture and a test piece manufacturing method, wherein the device comprises a rack, a rolling wheel, a mould, a horizontal displacement driving device, a vertical displacement device, a sliding box, a heating device and a vibration device for driving the rolling wheel to vibrate, wherein the middle part of the rack is provided with a workbench for placing the mould, the mould is covered with a plurality of steel sheets for transmitting rolling force, two sides of the rack above the workbench are provided with tracks, and the sliding box is arranged on the tracks through a sliding pair; the rolling wheel is installed on the sliding box through a vertical displacement device. Placing the mold on a workbench; after the die is filled with the mixture, the steel sheet is placed above the mixture and is filled with the die; the vertical displacement device is used for adjusting the height of the rolling roller, so that the rolling force on the asphalt mixture is adjusted. The horizontal displacement driving device is used for driving the sliding box to slide back and forth along the track for rolling. The invention has the advantages of energy saving, environmental protection, good compaction effect and multiple purposes.
Description
Technical Field
The invention belongs to the field of road engineering construction, relates to a pavement paving material testing device, and particularly relates to an indoor rolling forming device for an asphalt mixture and a test piece manufacturing method.
Background
The road traffic construction of China is rapidly advanced since the reform is opened, road asphalt production enterprises are rapidly developed, and related researches on asphalt modification, regeneration performance and the like are more and more. Compared with field construction, the compaction method of the asphalt mixture test piece in the laboratory needs to be optimized.
In the indoor test, no good asphalt mixture test piece compaction method exists due to the limitation of the model specification of the road roller and the size of an indoor test piece. At present, a commonly used indoor test asphalt mixture test piece compacting device is a hydraulic rutting sample forming machine, asphalt samples are compacted by reciprocating rolling through a rolling wheel, but the rolling wheel does not move at a constant speed relative to the test piece, the load on each part of the test piece is not uniform, and the compacting degree is inconsistent, so that the density of each part of the formed test piece is not uniform, and the size of the indoor test piece is greatly limited due to the fixed test mould specification of the hydraulic rutting sample forming machine. Moreover, the control of the required quantity of the compacted asphalt mixture sample of the traditional track plate is not accurate, and the problem of waste exists. Therefore, improvement on a molding and compacting method of a laboratory asphalt mixture test piece is urgently needed to efficiently obtain an asphalt mixture compacted test piece meeting the requirements of scientific research and engineering design.
Disclosure of Invention
The invention aims to provide an indoor rolling forming device for an asphalt mixture and a test piece manufacturing method, and solves the problem that an asphalt mixture test piece in the prior art is difficult to prepare.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides an indoor rolling forming device of bituminous mixture which characterized in that: the rolling device comprises a rack, a rolling wheel, a die, a horizontal displacement driving device, a vertical displacement device, a sliding box and a vibration device for driving the rolling wheel to vibrate, wherein a workbench for placing the die is arranged in the middle of the rack, a plurality of steel sheets for transmitting rolling force are covered on the die, rails are arranged on two sides of the rack above the workbench, and the sliding box is arranged on the rails through a sliding pair; the rolling wheel is installed on the sliding box through a vertical displacement device, the horizontal displacement driving device is used for driving the sliding box to slide back and forth along the track, so that the rolling wheel is driven to roll the asphalt mixture in the die, and the vertical displacement device is used for adjusting the height of the rolling wheel, so that the rolling force of the asphalt mixture is adjusted.
Further, the indoor rolling and forming device for the asphalt mixture further comprises a temperature control system, wherein the temperature control system comprises a temperature control box arranged on the workbench and a heating device arranged in the temperature control box.
Further, heating device includes heater, temperature sensor and temperature controller, the temperature control case is by four preceding, back, left and right curb plates with the roof and constitutes, the heater is installed in left and right both sides inboard, temperature sensor installs on the workstation, and temperature controller adjusts heating power size according to the temperature of temperature sensor monitoring.
Furthermore, the front side plate of the temperature control box is an openable side plate, one side of the front side plate is installed on the rack through a hinge, and the other side of the front side plate is provided with a handle convenient to open.
Furthermore, the vertical displacement devices are two hydraulic telescopic rods arranged at the bottom of the sliding box, and wheel shafts at two ends of the rolling wheel are arranged at free telescopic ends below the two hydraulic telescopic rods.
Furthermore, the free telescopic end below the hydraulic telescopic rod is arranged in a shaft hole for mounting a wheel shaft, the rolling wheel is mounted at the lower end of the hydraulic telescopic rod through the matching of the shaft hole and the wheel shaft, the vibrating device comprises a vibrating motor and an eccentric wheel, the vibrating motor is mounted on the hydraulic telescopic rod through a motor frame, the eccentric wheel is mounted on an output shaft of the vibrating motor, an eccentric groove mounted in a matching mode with the end portion of the wheel shaft is formed in the eccentric wheel, and the motor drives the wheel shaft to vibrate eccentrically through the eccentric wheel.
Furthermore, a pressure sensor for detecting the rolling contact force of the rolling wheel is arranged on the hydraulic telescopic rod.
Furthermore, the bottoms of the two ends of the sliding box are respectively provided with an L-shaped arm, and the upper side of the horizontal section of each L-shaped arm is provided with a first sliding chute matched with the upper track of the rack; the top of the track is provided with a second chute on the frame, the bottom of the sliding box is provided with a walking motor with a walking wheel and a driving walking wheel, and the walking wheel is assembled in the second chute.
Further, the indoor rolling forming device for the asphalt mixture further comprises an operating platform, wherein a rolling movement control button, a pressure control button, a vibration frequency control button and a temperature control button are arranged on the operating platform.
The invention also provides a manufacturing method of the asphalt mixture test piece, which adopts any one of the asphalt mixture indoor rolling forming devices and is characterized by comprising the following steps:
step 1, controlling the set temperature in a temperature control box to be not less than 4 hours by a heating device, filling a certain amount of asphalt mixture into a mold of the temperature control box, and paving the asphalt mixture by using a spatula;
5, rapidly starting the horizontal displacement driving device, starting to perform reciprocating rolling until the upper end of the steel sheet is flush with the die;
and 6, lifting the rolling wheel through a vertical displacement device, taking out the steel sheet, and demolding the test piece to obtain the required compacted test piece of the asphalt mixture.
The mould is a detachable steel mould and is assembled through bolt connection. The three matched molds comprise a double-layer composite prefabricated pavement slab mold, wherein the overlapped assembled mold is adopted, the sizes of the overlapped assembled mold are respectively 500mm multiplied by 700mm multiplied by 50mm, 500mm multiplied by 700mm multiplied by 50mm and 500mm multiplied by 700mm multiplied by 42mm from top to bottom, and the size of the matched steel sheet is 500mm multiplied by 4mm multiplied by 50 mm; the size of a standard rut test die is 300mm multiplied by 100mm, and the size of a matched steel sheet is 300mm multiplied by 4mm multiplied by 50 mm; the size of a test piece die for testing the dynamic modulus of the asphalt mixture is 300mm multiplied by 220mm, the size of a matched steel sheet is 300mm multiplied by 4mm multiplied by 50mm, and furthermore, the rolling wheel indirectly compacts the asphalt mixture through the steel sheet.
The invention has the following beneficial effects:
1) the asphalt filled into the die is calculated in advance, the height of the steel sheet exposed out of the die is adjusted according to the corresponding compactness requirement, the waste of asphalt mixture can be avoided, and the appearance of a test piece is ensured to be neat and attractive.
2) Compaction is effectual, and at the in-process that rolls, the rolling wheel vibrates the compaction to pitch through the compressed steel piece to the inside constant temperature state that keeps of device makes the test piece quality of shaping out better.
3) The device has multiple purposes, and the relevant parameters of the device have wide adjusting range due to the detachable die, so that the device can meet the molding requirements of test pieces with different sizes.
Drawings
FIG. 1 is a schematic view of the overall structure of the asphalt mixture rolling and molding apparatus according to the present invention.
FIG. 2 is an exploded view of the rolling and forming apparatus for asphalt mixture of the present invention.
Fig. 3 is a schematic view showing the installation relationship of the frame and the rolling wheels according to the present invention.
Fig. 4 is a schematic view of the vibration device of the present invention.
FIG. 5 is a schematic view of the slide box of the present invention.
FIG. 6 is a cross-sectional view of the glide box of the present invention.
FIG. 7 is a drawing of the double-layer composite prefabricated pavement slab mold and the matched steel sheets of the invention.
FIG. 8 is a drawing of a test piece mold and a matching steel sheet for testing the dynamic modulus of the asphalt mixture.
FIG. 9 is a drawing of a standard rut test mold and mating steel sheet of the present invention.
In the figure: 1-frame, 101-column, 102-table, 103-front plate, 104-rear plate, 105-left plate, 106-right plate, 107-top plate, 108-rail, 109-second runner, 2-sliding box, 3-L arm, 4-first runner, 5-traveling wheel, 6-traveling motor, 7-hydraulic telescopic rod, 8-hydraulic oil station, 9-operation table, 10-rolling movement control button, 11-pressure control button, 12-vibration frequency control button, 13-temperature control button, 14-heater, 15-mold, 16-steel plate, 17-rolling wheel, 18-wheel shaft, 19-vibration motor, 20-eccentric wheel, 21-eccentric groove, 22-vibration device, 23-motor frame.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention is further described with reference to the following figures and specific embodiments:
as shown in fig. 1 to 9, an indoor rolling and forming device for asphalt mixture comprises a frame 1, a rolling wheel 17, a mold 15, a horizontal displacement driving device, a vertical displacement device, a sliding box 2, a temperature control system and a vibration device 22 for driving the rolling wheel 17 to vibrate, wherein a workbench 102 for placing the mold 15 is arranged in the middle of the frame 1, the mold 15 is covered with a plurality of steel sheets 16 (the steel sheets 16 are strip-shaped, and a plurality of strip-shaped reply steel sheets 16 are arranged in parallel at the top of the asphalt mixture in the mold 15) for transmitting rolling force, rails 108 are arranged on two sides of the frame 1 above the workbench 102, and the sliding box 2 is mounted on the rails 108 through a sliding pair; the rolling wheel 17 is installed on the sliding box 2 through a vertical displacement device, the horizontal displacement driving device is used for driving the sliding box 2 to slide back and forth along the track 108, so that the rolling wheel is driven to roll the asphalt mixture in the die 15, and the vertical displacement device is used for adjusting the height of the rolling wheel, so that the rolling force of the asphalt mixture is adjusted. The steel sheet 16 is placed above the mixture after the mold 15 contains the mixture and is filled with the mold 15; the upper part of the steel sheet 16 is contacted with the lower part of the rolling wheel 17.
As shown in fig. 2 and 3, the frame 1 is formed by fixing four columns 101 and a middle worktable 102, two beams are arranged on the middle upper parts of the four columns 101 as rails 108, the beams simultaneously play a role of reinforcing the frame 1, the temperature control system comprises a temperature control box arranged on the worktable 102 and a heating device arranged in the temperature control box, and the rolling wheel and the mold are positioned in the temperature control box. The heating device comprises a heater 14, a temperature sensor and a temperature controller, the temperature control box is composed of four side plates including a front side plate 103, a rear side plate 104, a left side plate 105 and a right side plate 106, a top plate 107 is arranged on the inner sides of the left side plate and the right side plate, the temperature sensor is arranged on a workbench 102 (not shown in the figure, the installation position is not limited, and only the ambient temperature around a mold can be monitored), the temperature on the workbench 102 is monitored, the temperature controller adjusts the heating power according to the temperature monitored by the temperature sensor, adjusts the heating power of the heater 14 according to the monitored temperature and the set temperature difference, and the effect of maintaining the temperature on the workbench 102 to be constant is achieved.
As shown in fig. 1, the front side plate 103 of the temperature control box is an openable side plate, one side of the front side plate is mounted on the frame through a hinge, and the other side of the front side plate is provided with a handle convenient to open, so that loading and unloading of a mold can be conveniently carried out by opening the front side plate 103.
The vertical displacement devices are two hydraulic telescopic rods 7 arranged at the bottom of the sliding box 2, and wheel shafts 18 at two ends of the rolling wheel 17 are arranged at free telescopic ends below the two hydraulic telescopic rods 7. The freely telescopic end below the hydraulic telescopic rod 7 is arranged in a shaft hole of the wheel shaft 18, the rolling wheel 17 is arranged at the lower end of the hydraulic telescopic rod 7 through the matching of the shaft hole and the wheel shaft 18, the wheel shaft 18 and the shaft hole are in clearance fit, and the rolling wheel 17 can be driven to vibrate at high frequency in a small range by the vibrating device 22.
As shown in fig. 3 and 4, the vibration device 22 includes a vibration motor 19 and an eccentric wheel 20, the vibration motor 19 is mounted at the free telescopic end of the lower portion of the hydraulic telescopic rod 7 through a motor frame 23, the eccentric wheel 20 is mounted on the output shaft of the vibration motor 19, an eccentric groove 21 which is mounted in cooperation with the end portion of the wheel shaft 18 is formed in the eccentric wheel 20, the motor drives the wheel shaft 18 to eccentrically vibrate through the eccentric wheel 20, and in the rotating process of the specific eccentric wheel 20, the wheel shaft 18 is driven to eccentrically rotate through the eccentric groove 21, so as to achieve the purpose of vibration, the vibration motor 19 is a variable frequency motor, and the vibration frequency can be adjusted by adjusting.
The hydraulic telescopic rod 7 is provided with a pressure sensor (not shown in the figure, for example, the pressure sensor can be arranged at the end of the free telescopic end of the hydraulic telescopic rod 7) for detecting the rolling contact force of the rolling wheel 17, and the pressure sensor displays real-time pressure on the display screen of the operating platform 9. As a common knowledge, the hydraulic telescopic rod 7 is also provided with a matched hydraulic oil station 8, and the hydraulic oil station 8 is arranged outside the frame 1.
As shown in fig. 5 and 6, the bottom of each of the two ends of the sliding box 2 is provided with an L-shaped arm 3, the upper side of the horizontal section of each L-shaped arm 3 is provided with a first chute 4 matched with the rail 108 on the rack 1, that is, the rail 108 is installed in the first chute 4 on the corresponding side, and through the arrangement of the L-shaped arms 3 and the first chutes 4, the sliding box 2 and the rail 108 are firmly fixed together, and can bear a large reaction force in the rolling process. Frame 1 is gone up track 108 top and is equipped with second spout 109, 2 bottoms of sliding box are equipped with the walking motor 6 of a plurality of walking wheels 5 and road wheel 5, walking wheel 5 assembles in second spout 109, through the setting of walking wheel 5 and second spout 109, can guarantee that the walking direction does not squint, can keep stable and accurate walking control again. Certainly, in order to further improve the walking stability and reduce the walking resistance, the bottom in the first chute 4 is also provided with a plurality of walking wheels 5, wherein a part of the walking wheels 5 have power, as shown in fig. 6, the walking wheels 5 at the bottom of the right side of the sliding box 2 are connected with the output shaft of the walking motor 6, and certainly, in order to improve the walking consistency, the walking motor 6 can be arranged at the bottom of the left side of the sliding box 2, and fig. 6 is only an example and does not limit the position of the walking motor 6. In order to improve the walking effect, the walking motor 6 is preferably a variable frequency motor or a servo motor, which can control the walking speed, and the track 108 is provided with necessary position sensors, which can control the walking stroke, the starting point and the end point (corresponding sensors are not shown in the figure).
The invention also comprises an operation table 9, wherein the operation table 9 is provided with a rolling movement control button 10, a pressure control button 11, a vibration frequency control button 12, a temperature control button 13 and a display screen, as a common knowledge, in order to further improve the automation, more sensors and controllers can be arranged on the basis of the invention so as to improve the operation efficiency, and the embodiments of the invention are not illustrated one by one.
It should be noted that, in the process of automation, the present invention should further include a controller, the controller is only for implementing automation control, and in the absence of the controller, the present invention can implement the technical solution of the present invention as relying on manual control, so as to solve the technical problem of the present invention.
In the embodiment of the invention, the rolling wheel 17 is a solid cylinder, is provided with a rotating shaft and has certain weight, and the rolling wheel 17 is fixed on the hydraulic telescopic rod 7 and has two freedom degrees of motion in the horizontal direction and the vertical direction.
The temperature control box on the rack 1 is made of heat insulation materials, and a temperature sensor is arranged on the workbench 102 of the rack 1 and can display real-time temperature on a display screen of the control device. Meanwhile, the heating device can ensure that the inside of the temperature control box of the frame 1 realizes a constant temperature state of 60 ℃.
In this embodiment, the mold 15 is a detachable steel mold and assembled by bolting. Three matching molds are provided, including a double-layer composite prefabricated pavement slab mold, as shown in fig. 7, which adopts a superposed and assembled mold, the sizes of which are 500mm × 700mm × 50mm, 500mm × 700mm × 50mm and 500mm × 700mm × 42mm respectively from top to bottom, and the size of the matching steel sheet is 500mm × 4mm × 50 mm; the standard rut test die size is 300mm × 300mm × 100mm, as shown in fig. 8, the mating steel sheet size is 300mm × 4mm × 50 mm; the size of the mold of the test piece for testing the dynamic modulus of the asphalt mixture is 300mm multiplied by 220mm, and as shown in figure 9, the size of the matched steel sheet is 300mm multiplied by 4mm multiplied by 50 mm.
According to the asphalt mixture rolling and forming device, the invention also provides a manufacturing method of the asphalt mixture test piece, which comprises the following steps:
step 1, filling a certain amount of asphalt mixture into a mould 15 and paving;
firstly, a bottom concrete slab is manufactured in a concrete mould 15, after concrete curing is finished, a layer of adhesive oil is coated on the concrete slab, and then the upper asphalt layer mould 15 and the steel sheet are overlapped and assembled. After the assembly is completed, the asphalt mixture with the height of about 70mm is added into the mold 15 and laid flat, and finally the mold 15 together with the concrete slab and the asphalt mixture is placed in the middle of the workbench 102 of the asphalt mixture rolling and forming device.
A row of steel slabs 16 of 500mm x 4mm x 50mm in size and 175 slabs in total are placed over the paved asphalt mixture just filling the mold 15 and leveling the slab 16 above and exposing the mold 1530mm high.
Firstly, the height position of a rolling wheel 17 is adjusted through a rolling movement control button 10 on an operation table 9, so that the lower part of the rolling wheel 17 is just contacted with the upper part of a steel sheet 16; then, the horizontal position of the rolling wheel 17 is adjusted so that the rolling wheel 17 is positioned at one end of the steel sheet 16.
The horizontal displacement interval of the rolling wheel 17 is adjusted to be 0-700mm by a rolling movement control button 10 on the operating platform 9; inputting the proper pressure of the rolling wheel 17 through the pressure control button 11; inputting a proper vibration frequency of the rolling wheel 17, namely the rotating speed of the eccentric wheel 207, through a vibration frequency control button 12; the constant temperature is set to 60 c by the temperature control button 13.
And 5, starting a walking motor 6 of the horizontal displacement driving device, starting rolling, and continuously rolling until the upper end of the steel sheet 16 is flush with the die 15
The rolling wheel 17 starts and continues rolling, and meanwhile, the pressure value of the hydraulic telescopic rod 7 on the display screen of the operating platform 9 and the temperature value inside the device are noticed. And when the rolling is carried out until the upper part of the steel sheet 16 is flush with the die 15, closing the indoor rolling forming device for the asphalt mixture, withdrawing the hydraulic telescopic rod 7 and resetting the horizontal displacement driving device.
And 6, lifting the rolling wheel 17, taking out the steel sheet 16, demoulding the test piece, and checking the compaction quality of the asphalt mixture.
The height position of the rolling wheel 17 is adjusted through a pressure control button 11 on the operation table 9, the die 15 is moved out, the steel sheet 16 is taken out, the die 15 is disassembled, and the quality of the asphalt plate is detected.
The above-mentioned use method is an example of operations performed to a certain degree automatically based on the above-mentioned basic device of the present invention, and is not a limitation to the technical scheme of the present invention, and it should be noted that, in the absence of the above-mentioned automatic sensor and controller, the present invention can be completed by manual operations as well, and the fabrication of the asphalt mixture test piece by using the asphalt mixture indoor rolling forming device can be completed.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (10)
1. The utility model provides an indoor rolling forming device of bituminous mixture which characterized in that: the rolling device comprises a rack, a rolling wheel, a die, a horizontal displacement driving device, a vertical displacement device, a sliding box and a vibration device for driving the rolling wheel to vibrate, wherein a workbench for placing the die is arranged in the middle of the rack, a plurality of steel sheets for transmitting rolling force are covered on the die, rails are arranged on two sides of the rack above the workbench, and the sliding box is arranged on the rails through a sliding pair; the rolling wheel is installed on the sliding box through a vertical displacement device, the horizontal displacement driving device is used for driving the sliding box to slide back and forth along the track, so that the rolling wheel is driven to roll the asphalt mixture in the die, and the vertical displacement device is used for adjusting the height of the rolling wheel, so that the rolling force of the asphalt mixture is adjusted.
2. The indoor rolling and forming device for asphalt mixture as claimed in claim 1, wherein: the temperature control system comprises a temperature control box arranged on the workbench and a heating device arranged in the temperature control box.
3. The indoor rolling and forming device for asphalt mixture as claimed in claim 2, wherein: heating device includes heater, temperature sensor and temperature controller, the temperature control box is by four preceding, back, left and right curb plates with the roof and constitutes, the heater is installed in left and right both sides inboard, temperature sensor installs on the workstation, and temperature controller adjusts heating power size according to the temperature of temperature sensor monitoring.
4. The indoor rolling and forming device for asphalt mixture as claimed in claim 3, wherein: the front side plate of the temperature control box is an openable side plate, one side of the front side plate is installed on the rack through a hinge, and the other side of the front side plate is provided with a handle convenient to open.
5. The indoor rolling and forming device for asphalt mixture as claimed in claim 2, wherein: the vertical displacement device is composed of two hydraulic telescopic rods arranged at the bottom of the sliding box, and wheel shafts at two ends of the rolling wheel are arranged at free telescopic ends below the two hydraulic telescopic rods.
6. The indoor rolling and forming device for asphalt mixture as claimed in claim 5, wherein: the rolling wheel is installed at the lower end of the hydraulic telescopic rod through the matching of the shaft hole and the wheel shaft, the vibrating device comprises a vibrating motor and an eccentric wheel, the vibrating motor is installed on the hydraulic telescopic rod through a motor frame, the eccentric wheel is installed on an output shaft of the vibrating motor, an eccentric groove installed in a matching mode with the end portion of the wheel shaft is formed in the eccentric wheel, and the motor drives the wheel shaft to vibrate eccentrically through the eccentric wheel.
7. The indoor rolling and forming device for asphalt mixture as claimed in claim 6, wherein: and the hydraulic telescopic rod is provided with a pressure sensor for detecting the rolling contact force of the rolling wheel.
8. The indoor rolling and forming device for asphalt mixture as claimed in claim 7, wherein: the bottoms of the two ends of the sliding box are respectively provided with an L-shaped arm, and the upper side of the horizontal section of each L-shaped arm is provided with a first sliding chute matched with the rail on the rack; the top of the track is provided with a second chute on the frame, the bottom of the sliding box is provided with a walking motor with a walking wheel and a driving walking wheel, and the walking wheel is assembled in the second chute.
9. The indoor rolling and forming device for asphalt mixture as claimed in claim 8, wherein: still include the operation panel, be equipped with on the operation panel and roll mobile control button, pressure control button, vibration frequency control button and temperature control button.
10. A method for manufacturing an asphalt mixture test piece, which adopts the indoor rolling forming device for the asphalt mixture as claimed in any one of claims 2 to 9, and is characterized by comprising the following steps:
step 1, controlling the set temperature in a temperature control box to be not less than 4 hours by a heating device, filling a certain amount of asphalt mixture into a mold of the temperature control box, and paving the asphalt mixture by using a spatula;
step 2, a row of steel sheets heated in an oven are placed above the asphalt mixture, the steel sheets are tightly attached to each other and filled with the mold, and the steel sheets are exposed out of the top of the upper edge of the mold;
step 3, adjusting the initial position of the rolling wheel, contacting the steel sheet in the vertical direction, and horizontally locating the rolling wheel at the initial position, namely one end of the steel sheet;
step 4, setting a horizontal displacement interval value, a pressure value and a vibration frequency value according to requirements of a mold and a test piece;
5, rapidly starting the horizontal displacement driving device, starting to perform reciprocating rolling until the upper end of the steel sheet is flush with the die;
and 6, lifting the rolling wheel through a vertical displacement device, taking out the steel sheet, and demolding the test piece to obtain the required compacted test piece of the asphalt mixture.
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| CN202110386177.XA CN113049341A (en) | 2021-04-12 | 2021-04-12 | Indoor rolling forming device for asphalt mixture and test piece manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567208A (en) * | 2021-07-21 | 2021-10-29 | 长安大学 | Arc mould bituminous material road surface test piece make-up machine |
| CN115536437A (en) * | 2022-01-18 | 2022-12-30 | 武汉位错科技有限公司 | High-temperature rolling processing method and processing device and application thereof |
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| CN115536437B (en) * | 2022-01-18 | 2023-09-08 | 武汉位错科技有限公司 | High-temperature rolling processing method, processing device and application thereof |
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