CN113567208A - Arc mould bituminous material road surface test piece make-up machine - Google Patents
Arc mould bituminous material road surface test piece make-up machine Download PDFInfo
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- CN113567208A CN113567208A CN202110824552.4A CN202110824552A CN113567208A CN 113567208 A CN113567208 A CN 113567208A CN 202110824552 A CN202110824552 A CN 202110824552A CN 113567208 A CN113567208 A CN 113567208A
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- tensioning
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- compaction
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000009467 reduction Effects 0.000 claims abstract description 17
- 238000005056 compaction Methods 0.000 claims description 64
- 238000000465 moulding Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000010426 asphalt Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- WDQNIWFZKXZFAY-UHFFFAOYSA-M fentin acetate Chemical compound CC([O-])=O.C1=CC=CC=C1[Sn+](C=1C=CC=CC=1)C1=CC=CC=C1 WDQNIWFZKXZFAY-UHFFFAOYSA-M 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
Abstract
An arc mould bituminous material pavement test piece forming machine is characterized in that an arc template bin unit, a compacting device and a low-speed brake motor are arranged in a rack in the length direction, an output shaft of the low-speed brake motor is connected with the compacting device through a speed reduction chain wheel and chain mechanism, the compacting device is connected with a base of the rack through 2 groups of symmetrically arranged tensioning chain wheel and chain mechanisms, a connecting rod is arranged between a front group of vertical beams and a rear group of vertical beams of the rack, 2 groups of tensioning fixing frames are arranged on the connecting rod, a first tensioning chain wheel connected with the tensioning chain wheel and chain mechanism is arranged on the tensioning fixing frames, a transverse sliding rail and a longitudinal sliding rail are arranged at the top of the rack, a hoist trolley and a hand hoist are arranged on the longitudinal sliding rail, and the low-speed brake motor is electrically connected with a PLC (programmable logic controller); the compacted test piece effectively reduces the number of seams on the ring wall, greatly reduces the influence of the seams on experimental data acquisition, obtains more stable experimental data, and is more beneficial to analysis by measuring more data points on a single plate.
Description
Technical Field
The invention belongs to the technical field of road pavement test piece pressing equipment or devices, and particularly relates to an arc mold asphalt material pavement test piece forming machine.
Background
Compaction is a key link in the production and construction of asphalt pavements, and good pavement quality is finally reflected by rolling. Improper compaction can have a number of negative effects on the performance of the pavement and the vehicle. The incompleteness of the compaction forming process of the annular-wall asphalt pavement of the indoor HTP2 high-speed tire pavement test platform can cause the problems that the texture structure of the formed pavement surface and the compactness of the pavement can not meet the requirements of relevant specifications and the like. When the road surface compaction process is unreasonable, the mechanical running performance of the test platform is greatly challenged due to the unevenness of the road surface under the high-speed running of the tire, and the abrasion rate of the tire is accelerated due to the increase of the friction force between the tire and the road surface; the tire will probably present contactless state at the road surface elevation sudden change department, and is inconsistent with the actual vehicle at the road surface state of traveling, and then makes the noise that tests and the discreteness of antiskid data result grow, is unfavorable for finally making effectual scientific judgement and extracting the road surface improvement measure of outdoor road traffic safety.
The existing equipment for forming the standard asphalt pavement test piece plate indoors generally adopts a track forming machine, and the size of the formed plate is 300mm multiplied by 50 mm. For forming a larger-size non-standard plane test piece plate, a rut forming instrument cannot meet the requirements, most of researches adopt a small-sized hand-held vibratory roller, the forming process is closer to a solid engineering rolling process than an indoor rut forming machine, but the forming effect of a laboratory arc asphalt mixture sample needs to be further researched.
At present, related documents of a compaction forming process specially aiming at indoor circular arc asphalt mixture test pieces are few, when a pavement surface function acceleration loading system developed by Leishou and the like of southern China university forms an arc test piece with the arc length of 361mm, the arc pressure head is changed into a rectangular pressure head by improving the shape of the side surface of a wheel rolling pressure head of the asphalt mixture test piece, and the size of the side surface is 550mm multiplied by 75mm in width. This improved method is suitable for small size arc specimens, but not for large specimens with arc lengths exceeding 1000 mm. When the Tire Pavement Test equipment (TPTA) of the university of Pusht America has the molding arc length of 1870mm, a cylinder of an internally poured cement concrete steel pipe with the diameter of 280mm is connected with a forklift, and a static road roller is simulated to perform rolling molding on an arc asphalt mixture sample by using the combination of the forward and backward propulsion of the forklift and the weight of the cylinder, wherein the Test result shows that the molding technology cannot effectively compact the sample, so that the void ratio of the molding technology is greatly different from the expected void ratio.
Although the existing pavement compaction forming process is efficient and rapid, the research on the pavement anti-sliding and noise reduction test of the Changan university HTP2 test platform under the condition that the running speed of a tire exceeds 80km/h is required to be met, higher requirements are provided for various indexes of the compacted and formed pavement, and further improvement is required for the compaction process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the arc-die asphalt material pavement test piece forming machine which is uniform in rolling speed, compact in rolling and sufficient in flatness and test piece length.
The technical scheme for solving the technical problems is as follows: an arc mould asphalt material pavement test piece forming machine is provided with an arc mould plate bin unit arranged in the length direction in a frame, a compacting device is arranged on the arc mould plate bin unit, a low-speed brake motor is arranged at the top of the compacting device, the output shaft of the low-speed brake motor is connected with the compacting device through a speed reduction chain wheel and chain mechanism, the compacting device is connected with a base of the frame through 2 groups of tensioning chain wheel and chain mechanisms which are symmetrically arranged, a connecting rod is arranged between the front and back groups of vertical beams of the frame, 2 groups of tensioning fixing frames are arranged on the connecting rod, a first tensioning chain wheel is arranged on the tensioning fixing frames, the first tensioning chain wheel is connected with the tensioning chain wheel and chain mechanism, 2 groups of transverse sliding rails are arranged at the top of the frame along the length direction, a longitudinal sliding rail is arranged between the transverse sliding rails, a hoist trolley is arranged on the longitudinal sliding rail, and a chain hoist trolley is arranged at the lower part of the hoist trolley, the low-speed brake motor is electrically connected with the PLC.
The compaction device of the invention is as follows: the top of the T type frame of 2 vertical settings of group is provided with the roof, the bottom is provided with the bottom plate, be provided with low-speed braking motor on the roof, T type frame upper portion is provided with the compaction roller through the axis of rotation that is connected with speed reduction sprocket chain mechanism, the crossbeam board sets up between 2T type frames, crossbeam board both ends all are provided with perpendicular roof beam board, it all is provided with 2 compaction uide pins of group to erect the roof beam board outside, the compaction uide pin sets up and reciprocates in processing logical inslot on T type frame and can follow logical groove, it is provided with 2 first guide rolls of group to erect roof beam board upper portion, crossbeam board lower part is provided with 2 second guide rolls of group, card is followed outside arc template storehouse unit from top to bottom first guide roll and second guide roll, the cylinder of jacking cylinder sets up in crossbeam board lower part, the piston rod sets up in bottom plate upper portion, the jacking cylinder is connected with the PLC controller electricity.
The end part of the compaction roller is provided with a bearing type flange, and the diameter of the bearing type flange is determined according to the thickness of a test mold in the arc-shaped template bin unit.
The chain mechanism of the tension chain wheel comprises: the tensioning chain sequentially penetrates through the first tensioning chain wheel, the second tensioning chain wheel, the speed reduction chain wheel, the second tensioning chain wheel and the first tensioning chain wheel, two ends of the tensioning chain are connected with the tensioning fork, the tensioning fork is connected with the upper pull rod, the upper pull rod is connected with the guide rod, and the guide rod is connected with the rack.
The tail end of the guide rod is provided with a balancing weight.
The two ends of the arc-shaped template bin unit in the length direction are symmetrically provided with the proximity switch and the limit switch, and the travel switch and the displacement sensor are electrically connected with the PLC.
The central angle of the single arc-shaped template bin of the arc-shaped template bin unit is 30 degrees.
The connecting rod of the invention can move up and down on the vertical beam of the frame.
Compared with the prior art, the invention has the following advantages:
(1) the compaction forming equipment system for the arc asphalt pavement can be adapted to large test pieces with the thickness of more than 1000mm, when an arc die asphalt material pavement test piece forming machine is adopted for operation, the speed of the compaction roller can be set according to test requirements, the compaction roller can reciprocate through the tensioning chain, the compaction roller has stable slip rate, the compaction roller can reach an appointed position through the PLC, a test die is installed, test materials are filled, the pressure of the compaction roller can be set according to the test compaction requirements, the compaction roller has stable pressure, and the arc test pieces with required porosity and good flatness can be obtained.
(2) The compaction forming equipment for the arc asphalt pavement can effectively compact the sample, the working state of the compaction roller is a compaction state and performs reciprocating compaction movement, the speed and the pressure are stepless and adjustable, the arc size after compaction is accurate, and the required void ratio close to the expected void ratio is obtained.
(3) For the anti-sliding and noise-reducing performance test of the double-layer asphalt mixture, the rolling size of the bottom layer in the test mold needs to be rolled by a compaction wheel with the width of the forming machine working surface smaller than 400mm, and the rolling size of the upper layer mixture exceeding the thickness of the test mold needs to be rolled by a compaction wheel with the width larger than 400mm, so that the finally compacted and formed road surface is flush with the arc test mold, and the compaction degree of the double-layer road surface meets the requirement.
(4) The end part of the compaction roller is provided with the bearing type flange, the diameter of the bearing type flange is determined according to the thickness of the test mold in the arc-shaped template bin unit, namely, the accurate measurement of the thickness of the surface layer on the arc-shaped pavement is controlled by the bearing type flanges which are coaxial with the compaction roller and have different diameters, so that the finally formed arc-shaped pavement and the side edges of the test mold have equal radians, the flatness of the pavement surface of 12 test molds can be effectively ensured to meet the test requirement, and the influence of joint staggering or pavement depression on the pavement noise test can be avoided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a three-dimensional view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a left side view of fig. 1.
Fig. 5 is a schematic view of the structure of the compacting apparatus 7 of fig. 1.
Fig. 6 is a schematic view of the construction of the compaction roller 7-1 of fig. 4.
Fig. 7 is a schematic view of the tension sprocket chain mechanism 8 of fig. 1.
In the figure: 1. a frame; 2. tensioning the fixing frame; 3. hoisting a hoist trolley; 4. hand-pulling a hoist; 5. a low-speed brake motor; 6. a reduction sprocket chain mechanism; 7. a compaction device; 8. a chain mechanism for tensioning the sprocket; 9. an arc-shaped template bin unit; 10. a first tension sprocket; 11. a connecting rod; 12. a transverse slide rail; 13. a longitudinal slide rail; 14. a limit switch; 15. a proximity switch; 7-1, compacting rollers; 7-2, a top plate; 7-3, T-shaped frame; 7-4, a first guide roller; 7-5, a second guide roller; 7-6, a bottom plate; 7-7, jacking a cylinder; 7-8, cross beam plates; 7-9, vertical beam plates; 7-10, compacting a guide pin; 8-1, a balancing weight; 8-2, a guide rod; 8-3, an upper pull rod; 8-4, a tensioning fork; 8-5, tensioning the chain; 8-6, a second tensioning sprocket; 7-1-1 and a bearing type flange.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.
Example 1
In fig. 1 to 7, an arc template bin unit 9 is fixedly connected and installed in the length direction inside a frame 1 through a threaded fastening connecting piece, the arc template bin unit 9 is composed of a plurality of arc template bins, a plurality of test molds can be pressed at one time, and the central angle of a single arc template bin in the embodiment is 30 degrees. The arc-shaped template bin unit 9 is provided with a compacting device 7, the output shaft of a low-speed brake motor 5 is connected with the compacting device 7 through a speed reduction chain wheel and chain mechanism 6, the speed reduction chain wheel and chain mechanism 6 comprises a driving chain wheel, a speed reduction chain wheel and a speed reduction chain, the compacting device 7 is formed by connecting a compacting roller 7-1, a top plate 7-2, a T-shaped frame 7-3, a first guide roller 7-4, a second guide roller 7-5, a bottom plate 7-6, a jacking cylinder 7-7, a cross beam plate 7-8, a vertical beam plate 7-9 and a compacting guide pin 7-10, the top of the T-shaped frame 7-3 which is vertically arranged in 2 groups is fixedly connected with a top plate 7-2 through a threaded fastening connecting piece, the bottom of the T-shaped frame is fixedly connected with a bottom plate 7-6 through a threaded fastening connecting piece, and the low-speed brake motor 5 is arranged on the top plate 7-2, the T low-speed brake motor 5 is electrically connected to the PLC controller. The outer side of the upper part of the fixture 7-3 is provided with a reduction chain wheel which is connected with a driving chain wheel through a reduction chain, and the driving chain wheel is arranged on an output shaft of the low-speed brake motor 5. The upper part of the T-shaped frame 7-3 is provided with a compaction roller 7-1 through a rotating shaft, the rotating shaft is connected with a speed reduction chain wheel, a cross beam plate 7-8 is arranged between 2 groups of T-shaped frames 7-3, but is not connected with the T-shaped frame 7-3, two ends of the cross beam plate 7-8 are both fixedly connected with vertical beam plates 7-9 through a thread fastening connecting piece, the outer sides of the vertical beam plates 7-9 are both fixedly connected with 2 groups of compaction guide pins 7-10 through a thread fastening connecting piece, the compaction guide pins 7-10 are arranged in a through groove processed on the T-shaped frame 7-3 and can move up and down along the through groove, the upper part of the vertical beam plate 7-9 is fixedly connected with 2 groups of first guide rollers 7-4 through the thread fastening connecting piece, the lower part of the cross beam plate 7-8 is fixedly connected with 2 groups of second guide rollers 7-5 through the thread fastening connecting piece, the first guide roller 7-4 and the second guide roller 7-5 are vertically clamped at the outer edge of the arc-shaped template bin unit 9, the cylinder barrel of the jacking cylinder 7-7 is fixedly connected and installed at the lower part of the cross beam plate 7-8 through a threaded fastening connecting piece, the piston rod is fixedly connected and installed at the upper part of the bottom plate 7-6 through a threaded fastening connecting piece, the jacking cylinder 7-7 is electrically connected with the PLC, when the piston rod of the jacking cylinder 7-7 extends out, the bottom plate 7-6 is pushed to move downwards, the compaction guide pin 7-10 moves downwards along the through groove, the first guide roller 7-4 and the second guide roller 7-5 are clamped on the outer edge of the arc-shaped template bin unit 9 and are not moved, the bottom plate 7-6 moves downwards so as to drive the T-shaped frame 7-3 to move downwards, the compaction roller 7-1 falls down, and the test mold in the arc-shaped template bin unit 9 is compacted.
Further, a bearing type flange 7-1-1 is arranged at the end part of the compacting roller 7-1, the diameter of the bearing type flange 7-1-1 is determined according to the thickness of a test mold in the arc-shaped template bin unit 9, namely, the accurate measurement of the thickness of the upper surface layer of the arc-shaped pavement is controlled by the bearing type flanges 7-1-1 with different diameters and sizes which are coaxial with the compacting roller 7-1, the width of the compacting roller 7-1 is slightly smaller than the net width of the inner side of the test mold, for example, the upper surface layer with the thickness of 2cm is planned to be paved, the bearing type flange 7-1-1 with the diameter smaller than 4cm is assembled to the compacting roller 7-1, when the compacting roller 7-1 slowly rolls the inner side surface of the test mold, the bearing type flange 7-1-1 with the specification just falls on the upper part of the side edge of the test mold, which indicates that the thickness of the lower surface layer formed at this time is just 7cm (the total height of the test mold filler is 9cm), and then, the bearing type flange 7-1-1 with the same diameter as the compaction roller 7-1 is replaced, so that the finally formed arc road surface and the side edge of the test mold have the same radian, the flatness of the road surface of 12 test molds can be effectively ensured to meet the test requirement, and the influence of joint dislocation or road surface depression on the noise test of the road surface is avoided.
The compaction device 7 is connected with a base of the frame 1 through 2 groups of symmetrically arranged tensioning chain wheel and chain mechanisms 8, connecting rods 11 are fixedly connected and installed between the front and rear vertical beams of the frame 1 through threaded fastening connecting pieces, and further the connecting rods 11 can move up and down on the vertical beams of the frame 1. 2 groups of tensioning fixing frames 2 are arranged on a connecting rod 11, a first tensioning chain wheel 10 is arranged on the tensioning fixing frame 2, the first tensioning chain wheel 10 is connected with a tensioning chain wheel and chain mechanism 8, the tensioning chain wheel and chain mechanism 8 is formed by connecting a balancing weight 8-1, a guide rod 8-2, an upper pull rod 8-3, a tensioning fork 8-4, a tensioning chain 8-5 and a second tensioning chain wheel 8-6, the tensioning chain 8-5 sequentially penetrates through the first tensioning chain wheel 10, the second tensioning chain wheel 8-6, a speed reduction chain wheel, the second tensioning chain wheel 8-6 and the first tensioning chain wheel 10, two ends of the tensioning chain 8-5 are connected with the tensioning fork 8-4, the tensioning fork 8-4 is connected with the upper pull rod 8-3, the upper pull rod 8-3 is connected with the guide rod 8-2, the guide rod 8-2 is connected with a rack 1, further, the tail end of the guide rod 8-2 is provided with a balancing weight 8-1, the speed of the compaction roller 7-1 is set when the low-speed brake motor 5 works according to test requirements, and when the compaction roller 7-1 moves downwards or upwards along the tensioning chain 8-5, the balancing weight 8-1 can enable the compaction roller 7-1 not to suddenly slide, so that the compaction roller 7-1 is guaranteed to move at a constant speed.
2 groups of transverse slide rails 12 are installed on the top of the rack 1 along the length direction through a threaded fastening connecting piece in a fixed connection mode, longitudinal slide rails 13 are installed between the transverse slide rails 12, a hoist trolley 3 is installed on the longitudinal slide rails 13 through a threaded fastening connecting piece in a fixed connection mode, a hand-pulling hoist trolley 4 is installed on the lower portion of the hoist trolley 3, the longitudinal slide rails 13 can move back and forth along the transverse slide rails 12, the hoist trolley 3 can move back and forth along the longitudinal slide rails 13, and therefore a test mold is placed in the arc-shaped template bin unit 9. Furthermore, two ends of the arc-shaped template bin unit 9 in the length direction are symmetrically provided with a proximity switch 15 and a limit switch 14, the proximity switch 15 and the limit switch 14 are electrically connected with the PLC, the proximity switch 15 is used for providing a signal switch for the reciprocating compaction of the roller 7-1, and when the lower part of the roller 7-1 is close to the sensing surface of the proximity switch 15 to reach an action distance, the switch can be actuated without mechanical contact and any pressure applied, so that the switch is fed back to the PLC and a return instruction is provided for the compaction roller 7-1. And the limit switch 14 limits the limit positions of the compaction roller 7-1 at the two ends of the test mold, if the compaction roller 7-1 moves to the limit switch 14, the contactor is directly closed, the whole circuit system is in a power-off state, and the compaction roller 7-1 stands still to prevent the compaction roller 7-1 from continuously moving towards the two ends of the arc-shaped template bin unit 9.
The working process of the invention is as follows:
(1) the power supply supplies power.
(2) The speed of the compaction roller 7-1 is set according to the test requirements.
(3) Controlling the piston rod of the jacking cylinder 7-7 to retract, and lifting the compaction roller 7-1.
(4) The low-speed brake motor 5 is controlled to work, and the compaction roller 7-1 moves along the tension chain 8-5, so that the compaction roller 7-1 reaches a required position.
(5) And controlling a piston rod of the jacking cylinder 7-7 to extend out, and lowering the compaction roller 7-1.
(6) And (3) loading the test mold into the arc-shaped template bin unit 9 by using a hand-pulling hoist 4.
(7) And setting PLC (programmable logic controller) data according to the test compaction load, loading, setting a compaction mode in a one-way (or two-way) mode, and starting operation of the equipment.
(8) And after the test requirement is met, the equipment stops running.
Claims (8)
1. The utility model provides an arc mould bituminous material road surface test piece make-up machine which characterized in that: an arc-shaped template bin unit (9) is arranged in the length direction of the inside of a rack (1), a compaction device (7) is arranged on the arc-shaped template bin unit (9), a low-speed brake motor (5) is arranged at the top of the compaction device (7), an output shaft of the low-speed brake motor (5) is connected with the compaction device (7) through a speed reduction chain wheel chain mechanism (6), the compaction device (7) is connected with a base of the rack (1) through 2 groups of symmetrically arranged tensioning chain wheel chain mechanisms (8), a connecting rod (11) is arranged between the front and rear groups of vertical beams of the rack (1), 2 groups of tensioning fixing frames (2) are arranged on the connecting rod (11), a first tensioning chain wheel (10) is arranged on the tensioning fixing frame (2), the first tensioning chain wheel (10) is connected with the tensioning chain wheel chain mechanism (8), and 2 groups of transverse sliding rails (12) are arranged at the top of the rack (1) along the length direction, a longitudinal slide rail (13) is arranged between the transverse slide rails (12), a hoist trolley (3) is arranged on the longitudinal slide rail (13), a hand hoist (4) is arranged on the lower part of the hoist trolley (3), and the low-speed brake motor (5) is electrically connected with the PLC.
2. The arc-die bituminous material pavement test piece forming machine according to claim 1, characterized in that said compacting device (7) is: the top of the T-shaped frame (7-3) which is vertically arranged in the group 2 is provided with a top plate (7-2), the bottom of the T-shaped frame is provided with a bottom plate (7-6), the top plate (7-2) is provided with a low-speed brake motor (5), the upper part of the T-shaped frame (7-3) is provided with a compaction roller (7-1) through a rotating shaft connected with a speed reduction chain wheel and chain mechanism (6), a cross beam plate (7-8) is arranged between the group 2T-shaped frames (7-3), two ends of the cross beam plate (7-8) are respectively provided with a vertical beam plate (7-9), the outer side of each vertical beam plate (7-9) is provided with 2 groups of compaction guide pins (7-10), the compaction guide pins (7-10) are arranged in through grooves processed on the T-shaped frame (7-3) and can move up and down along the through grooves, the upper parts of the vertical beam plates (7-9) are provided with 2 groups of first guide rollers (7-4), the lower part of the cross beam plate (7-8) is provided with 2 groups of second guide rollers (7-5), the first guide rollers (7-4) and the second guide rollers (7-5) are clamped on the outer edge of the arc-shaped template bin unit (9) up and down, a cylinder barrel of the jacking cylinder (7-7) is arranged on the lower part of the cross beam plate (7-8), a piston rod is arranged on the upper part of the bottom plate (7-6), and the jacking cylinder (7-7) is electrically connected with the PLC.
3. The arc-mold bituminous material pavement test piece molding machine of claim 2, characterized in that: the end part of the compaction roller (7-1) is provided with a bearing type flange (7-1-1), and the diameter of the bearing type flange (7-1-1) is determined according to the thickness of a test mold in the arc-shaped template bin unit (9).
4. The arc-mold bituminous material pavement test piece molding machine according to claim 1, wherein the chain mechanism (8) with tension sprockets is: the tensioning chain (8-5) sequentially penetrates through the first tensioning chain wheel (10), the second tensioning chain wheel (8-6), the speed reduction chain wheel, the second tensioning chain wheel (8-6) and the first tensioning chain wheel (10), two ends of the tensioning chain (8-5) are connected with the tensioning fork (8-4), the tensioning fork (8-4) is connected with the upper pull rod (8-3), the upper pull rod (8-3) is connected with the guide rod (8-2), and the guide rod (8-2) is connected with the rack (1).
5. The arc-mold bituminous material pavement test piece molding machine of claim 4, characterized in that: the tail end of the guide rod (8-2) is provided with a balancing weight (8-1).
6. The arc-mold bituminous material pavement test piece molding machine of claim 1, characterized in that: and two ends of the arc-shaped template bin unit (9) in the length direction are symmetrically provided with a proximity switch (15) and a limit switch (14), and the travel switch (15) and the displacement sensor (14) are electrically connected with the PLC.
7. The arc-mold bituminous material pavement test piece molding machine of claim 1, characterized in that: the central angle of a single arc-shaped template bin of the arc-shaped template bin unit (9) is 30 degrees.
8. The arc-mold bituminous material pavement test piece molding machine of claim 1, characterized in that: the connecting rod (11) can move up and down on a vertical beam of the frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110824552.4A CN113567208B (en) | 2021-07-21 | 2021-07-21 | Arc mould bituminous material pavement test piece forming machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110824552.4A CN113567208B (en) | 2021-07-21 | 2021-07-21 | Arc mould bituminous material pavement test piece forming machine |
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| CN113567208A true CN113567208A (en) | 2021-10-29 |
| CN113567208B CN113567208B (en) | 2024-03-26 |
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| US20060013654A1 (en) * | 2004-04-06 | 2006-01-19 | Jorg Barthel | Method, apparatus and template band for producing three-dimensional profiled road surfaces |
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