Asphalt mixture rolling fluidity detection equipment for road construction

Abstract

The invention relates to the technical field of fluidity detection, and discloses asphalt mixture rolling fluidity detection equipment for road construction, which comprises a main body frame, a supporting platform is installed in the main body frame, the supporting platform comprises a heating supporting plate hinged to the main body frame, and a driving guide rail is hinged to the outside of the main body frame. A supporting connecting rod is hinged between the driving guide rail and the heating supporting plate, an adjusting guide rail is fixedly connected to the exterior of the main body frame, and a rolling fluidity detection mechanism used for fluidity detection is arranged outside the driving guide rail and the adjusting guide rail; through cooperative use of the driving assembly and the adjusting sliding block, the effect that the pressure direction and the pressure magnitude of the rolling mechanism on the asphalt mixture can be adjusted in multiple directions during asphalt mixture rolling fluidity detection is achieved, so that the comprehensiveness and the diversity of asphalt mixture rolling fluidity detection are effectively improved, and the detection efficiency is improved. Therefore, the detection accuracy of the rolling fluidity of the asphalt mixture is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluidity detection, and specifically provides an asphalt mixture rolling fluidity detection device for road construction. Background Art

[0002] During the road construction process, when laying asphalt, in order to ensure the laying effect of asphalt, usually before laying asphalt, it is necessary to detect the rolling fluidity of asphalt, so as to ensure the laying effect of asphalt in each section.

[0003] Referring to the Chinese patent with the publication number CN117723440A, it discloses an asphalt mixture rolling fluidity detection device for regenerative construction of inclined sections, including a rolling table with a heating function and inclined setting, and an angle adjustment mechanism for adjusting the inclination angle of the rolling table. A groove surface for spreading asphalt is provided on the rolling table, and a rolling roller that can roll along the length direction of the rolling table is provided on the top of the groove surface. A holder is provided on the top of the rolling table, and a moving mechanism for driving the holder to move along the length direction of the rolling table. When the holder moves along the length direction of the rolling table, the distance between the holder and the groove surface is always fixed. A pressure mechanism is provided on the holder, and the pressure mechanism is connected to the rolling roller. The pressure mechanism is used to drive the rolling roller to apply pressure to the asphalt in the groove surface along the direction of gravity.

[0004] In the above patent, the rolling roller is used as the pressure component for detecting the rolling fluidity of the asphalt mixture. However, during the detection process, the pressure is always in the vertical state and the direction of the pressure cannot be adjusted, which limits the comprehensiveness of the detection of the rolling fluidity of asphalt. Moreover, during the detection process, the pressure mechanism provides pressure through a spring. However, when detecting the rolling fluidity of the asphalt mixture, the shape of the asphalt often changes, and the asphalt mixture in the area of the rolling roller produces a concave phenomenon. When the asphalt mixture is concave, the spring will extend, resulting in a change in the pressure of the rolling roller on the asphalt mixture. In actual use, the pressure on the asphalt mixture is constant. Therefore, it will affect the final effect of detecting the rolling fluidity of the asphalt mixture and lead to inaccurate detection results. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an asphalt mixture rolling fluidity detection device for road construction.

[0006] To achieve the above object, the present invention provides the following technical solutions: An asphalt mixture rolling fluidity detection device for road construction, comprising a main frame. A support platform is installed inside the main frame. The support platform includes a heating support plate hinged to the main frame. An angle adjustment rod for adjusting the angle of the heating support plate is provided between the heating support plate and the support platform. A spreading plate is detachably installed on the top of the heating support plate. A driving guide rail is hinged to the outside of the main frame. A support connecting rod is hinged between the driving guide rail and the heating support plate. An adjustment guide rail is fixedly connected to the outside of the main frame. A rolling fluidity detection mechanism for fluidity detection is provided outside the driving guide rail and the adjustment guide rail. The rolling fluidity detection mechanism includes a mounting plate. A rolling mechanism is installed on the top of the mounting plate. Positioning rods are fixedly connected to both sides of the mounting plate. A driving component and an adjustment slider are provided outside the positioning rods. The driving component includes a driving slider, a connecting block and a fixing bolt. The driving slider is slidably connected to the outside of the driving guide rail in a drivable manner. The connecting block is rotatably connected to the outside of the driving slider. The positioning rod passes through and is slidably connected to the inside of the connecting block. The fixing bolt is used to fix the position of the positioning rod inside the connecting block. An adjustment plate is rotatably connected to the outside of the adjustment slider. The adjustment plate is slidably sleeved with the positioning rod. An adjustment bolt for controlling the deflection angle of the adjustment plate is provided outside the adjustment slider.

[0007] Preferably: The driving guide rail and the heating support plate are arranged in parallel. Both ends of the support connecting rod are respectively hinged to the driving guide rail and the heating support plate. The adjustment guide rail is arranged horizontally. The positioning rods respectively pass through and are slidably connected to the inside of the adjustment plate and the connecting block.

[0008] Preferably: The rolling mechanism includes a rolling wheel. A guide rod is fixedly connected to the top of the rolling wheel. The guide rod passes through and is slidably connected to the inside of the mounting plate. A pressure stabilizing component is fixedly connected to the top of the mounting plate. The rolling wheel is fixedly connected to the bottom of the driving end of the pressure stabilizing component. An oil pump component is fixedly connected to the top of the adjustment plate. An oil delivery pipe is provided between the oil pump component and the pressure stabilizing component. The oil pump component is connected to an external oil supply system.

[0009] Preferably, the pressure stabilizing assembly includes an adjusting hydraulic rod fixedly connected to the top of the mounting plate. A pressure plunger cylinder is fixedly connected to the bottom of the adjusting hydraulic rod. A pressure stabilizing plunger rod is slidably connected inside the pressure plunger cylinder. The bottom of the pressure stabilizing plunger rod is fixedly connected to the rolling wheel. An oil inlet chamber and an oil return chamber are formed inside the adjusting hydraulic rod. An oil inlet pipe is arranged outside the oil inlet chamber. An oil return pipe is arranged outside the oil return chamber. A cylindrical hole is formed between the oil inlet chamber and the oil return chamber. A valve column block adapted to the cylindrical hole is arranged outside the cylindrical hole. A pressure regulating mechanism is arranged outside the valve column block. An oil return pressure stabilizing mechanism is arranged inside the oil return pipe. The oil delivery pipe includes a two-way oil path, and the two-way oil path of the oil delivery pipe is respectively communicated with the oil inlet pipe and the oil return pipe.

[0010] Preferably, a plurality of groups of rolling wheels are provided. The rolling wheels are all installed at the bottom of the mounting plate through guide rods. Scale lines are arranged outside the guide rods. A pressure stabilizing assembly is installed on the top of any group of rolling wheels.

[0011] Preferably, the pressure regulating mechanism includes a pressure regulating rod threadedly connected to the adjusting hydraulic rod. A second pressure regulating spring is arranged outside the pressure regulating rod. A buffer sliding block is fixedly connected to the end of the second pressure regulating spring. The buffer sliding block is slidably connected inside the oil return chamber. A first pressure regulating spring is arranged between the buffer sliding block and the valve column block.

[0012] Preferably, the oil return chamber is communicated with the pressure plunger cylinder. A one-way valve is arranged inside the connecting hole between the oil return chamber and the pressure plunger cylinder. A communicating oil hole is formed outside the pressure plunger cylinder. The communicating oil hole communicates the cavity between the buffer sliding block and the pressure regulating rod.

[0013] Preferably, the oil return pressure stabilizing mechanism includes an isolation valve plate fixedly connected inside the oil return pipe. An oil outlet pressure stabilizing ring is movably connected outside the isolation valve plate. An oil outlet pressure stabilizing spring is arranged between the oil outlet pressure stabilizing ring and the oil return pipe.

[0014] Advantages of the present invention: 1. For the asphalt mixture rolling fluidity detection device for road construction, through the combined use of the driving assembly and the adjusting slider, when detecting the rolling fluidity of the asphalt mixture, the pressure direction and pressure magnitude of the rolling mechanism on the asphalt mixture can be adjusted in multiple directions, so as to effectively improve the comprehensiveness and diversity of the detection of the rolling fluidity of the asphalt mixture, and thus improve the accuracy of the detection of the rolling fluidity of the asphalt mixture.

[0015] 2. The asphalt mixture rolling fluidity detection device for road construction can, through the pressure stabilization component, achieve the effect of maintaining the stability of the pressure exerted by the pressure stabilization plunger rod on the asphalt mixture through the rolling wheel, so that when the asphalt mixture to be detected is rolled and flows and sags during the detection process, or when the rolling wheel rolls over the protruding part of the asphalt mixture, the stability of the pressure exerted by the rolling wheel on the asphalt mixture can be maintained. Furthermore, it can effectively ensure the accuracy of the asphalt mixture rolling fluidity detection, reduce the pressure change between the rolling wheel and the asphalt mixture caused by the morphological change during the asphalt mixture rolling fluidity detection process, and thus affect the accuracy of the final asphalt mixture rolling fluidity detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the main body of the detection device of the present invention; Figure 2 Schematic diagram of the main body of the detection part of the present invention; Figure 3 Cross-sectional view schematic diagram of the detection part of the present invention; Figure 4 Schematic diagram of the connection of the heating support plate, driving guide rail, adjusting guide rail and rolling fluidity detection mechanism of the present invention; Figure 5 Schematic diagram of the rolling fluidity detection mechanism of the present invention; Figure 6 Schematic diagram of the pressure stabilization component of the present invention; Figure 7 Schematic diagram of the state where the asphalt mixture is placed at an inclined angle and the rolling pressure is perpendicular to the surface of the asphalt mixture during the detection process of the present invention; Figure 8 Schematic diagram of the state where the annual rolling pressure remains vertical of the present invention; Figure 9 For the present invention Figure 6 Enlarged schematic diagram of part A; Figure 10 For the present invention Figure 6 Enlarged schematic diagram of part B.

[0017] In the figure: 1. Main frame; 2. Support platform; 21. Heating support plate; 22. Angle adjustment rod; 23. Spreading plate; 3. Driving guide rail; 31. Support connecting rod; 4. Adjusting guide rail; 5. Rolling fluidity detection mechanism; 51. Mounting plate; 52. Rolling mechanism; 521. Rolling wheel; 522. Guide rod; 523. Pressure stabilizing component; 5231. Adjusting hydraulic rod; 5232. Pressure plunger cylinder; 5233. Pressure stabilizing plunger rod; 5234. Oil inlet chamber; 5235. Oil return chamber; 5236. Check valve; 5237. Oil inlet pipe; 5238. Oil return pipe; 52381. Isolation valve plate; 52382. Oil outlet pressure stabilizing ring; 52383. Oil outlet pressure stabilizing spring; 5239. Cylindrical hole; 52310. Valve column block; 52311. First pressure regulating spring; 52312. Buffer slider; 52313. Second pressure regulating spring; 52314. Pressure adjusting rod; 52315. Connecting oil hole; 524. Oil delivery pipe; 525. Oil pump assembly; 53. Positioning rod; 54. Driving component; 541. Driving slider; 542. Connecting block; 543. Fixing bolt; 55. Adjusting slider; 551. Adjusting bolt; 56. Adjusting plate. Detailed implementation mode

[0018] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Example 1. Please refer to Figure 1 - Figure 10 , a rolling fluidity detection device for asphalt mixture in road construction, including a main frame 1. A support platform 2 is installed inside the main frame 1. The support platform 2 includes a heating support plate 21 hinged to the main frame 1. An angle adjustment rod 22 for adjusting the angle of the heating support plate 21 is arranged between the heating support plate 21 and the support platform 2. A spreading plate 23 is detachably installed on the top of the heating support plate 21. A driving guide rail 3 is hinged to the outside of the main frame 1. A support connecting rod 31 is hinged between the driving guide rail 3 and the heating support plate 21. An adjusting guide rail 4 is fixedly connected to the outside of the main frame 1. A rolling fluidity detection mechanism 5 for fluidity detection is arranged outside the driving guide rail 3 and the adjusting guide rail 4.

[0020] During the process of performing the rolling fluidity test, the asphalt mixture is placed in the spreading plate 23, and then the driving guide rail 3 is controlled, and the driving guide rail 3 drives the rolling fluidity detection mechanism 5 to conduct the experiment.

[0021] Among them, the angle adjustment rod 22 includes, but is not limited to, an electromagnetic telescopic rod, a hydraulic rod or a pneumatic rod.

[0022] A number of camera components are also arranged inside the main frame 1, which are used to record the morphological changes of the asphalt mixture during the rolling process, and the rolling fluidity of the asphalt mixture is analyzed through the recorded change forms.

[0023] The rolling fluidity detection mechanism 5 includes a mounting plate 51. A rolling mechanism 52 is mounted on the top of the mounting plate 51. Positioning rods 53 are fixedly connected to both sides of the mounting plate 51. A driving component 54 and an adjusting slider 55 are arranged outside the positioning rods 53; The driving component 54 includes a driving slider 541, a connecting block 542 and a fixing bolt 543. The driving slider 541 is slidably connected to the outside of the driving guide rail 3 in a drivable manner. The connecting block 542 is rotatably connected to the outside of the driving slider 541. The positioning rod 53 is slidably connected through the inside of the connecting block 542. The fixing bolt 543 is used to fix the position of the positioning rod 53 inside the connecting block 542; Among them, the driving guide rail 3 includes, but is not limited to, screw driving and chain driving, and is used to control the sliding of the driving slider 541 outside the driving guide rail 3. The driving slider 541 drives the mounting plate 51 to move above the spreading plate 23 through the positioning rod 53.

[0024] An adjusting plate 56 is rotatably connected to the outside of the adjusting slider 55. The adjusting plate 56 and the positioning rod 53 are slidably sleeved. An adjusting bolt 551 for controlling the deflection angle of the adjusting plate 56 is arranged outside the adjusting slider 55.

[0025] It should be noted that the adjusting plate 56 is used to control the deflection angle of the positioning rod 53, and the driving slider 541 is used to control the height of the positioning rod 53.

[0026] The adjusting slider 55 slides inside the adjusting guide rail 4. The adjusting slider 55 is always in a horizontal state. When the angle between the adjusting plate 56 and the adjusting slider 55 changes, the positioning rod 53 deflects along the axis of the connecting block 542, and the deflection angle of the positioning rod 53 is controlled by the deflection angle of the adjusting plate 56.

[0027] Specifically, during the detection process, the separation and fixation of the positioning rod 53 and the connecting block 542 are controlled through the fixing bolt 543. When the positioning rod 53 is separated from the connecting block 542, the positioning rod 53 can be controlled to slide up and down relative to the driving slider 541, so as to adjust the height of the mounting plate 51. The mounting plate 51 drives the rolling mechanism 52 to move up and down, so as to adjust the rolling pressure on the asphalt mixture inside the spreading plate 23.

[0028] Moreover, by adjusting the bolt 551 to control the angles of the adjusting plate 56 and the adjusting slider 55, the angles of the mounting plate 51 and the positioning rod 53 can be controlled, and the pressure direction of the rolling mechanism 52 is parallel to the axis of the positioning rod 53. Therefore, the effect of adjusting the pressure direction of the rolling mechanism 52 is achieved.

[0029] By the combined use of the driving assembly 54 and the adjusting slider 55, when detecting the rolling fluidity of asphalt mixture, the pressure direction and magnitude of the rolling mechanism 52 on the asphalt mixture can be adjusted in multiple directions, effectively improving the comprehensiveness and diversity of the detection of the rolling fluidity of asphalt mixture, and thus improving the accuracy of the detection of the rolling fluidity of asphalt mixture.

[0030] Reference Figures 3 - 4 、 Figures 5 - 8 In an alternative embodiment, the driving guide rail 3 and the heating support plate 21 are arranged in parallel. The two ends of the support connecting rod 31 are respectively hinged to the driving guide rail 3 and the heating support plate 21. The adjusting guide rail 4 is arranged horizontally, and the positioning rod 53 passes through and is slidably connected to the interiors of the adjusting plate 56 and the connecting block 542 respectively.

[0031] It should be noted that a parallelogram structure is formed between the driving guide rail 3 and the heating support plate 21 through the support connecting rod 31. Therefore, when the heating support plate 21 is driven by the angle adjusting rod 22 to change its angle, the driving guide rail 3 changes synchronously, and the driving guide rail 3 and the heating support plate 21 always remain parallel to each other.

[0032] When the driving slider 541 reciprocally slides on the driving guide rail 3, the driving slider 541 drives the mounting plate 51 to move parallel to the heating support plate 21 along the direction of the driving guide rail 3. When the mounting plate 51 drives the rolling mechanism 52 to move, the distance between the rolling mechanism 52 and the spreading tray 23 remains unchanged. Therefore, the pressure of the rolling mechanism 52 on the asphalt mixture inside the spreading tray 23 remains unchanged, ensuring the stability of the pressure of the rolling mechanism 52 during the pressure detection process and guaranteeing the accuracy of the detection result.

[0033] Reference Figure 4 and Figure 5 In an alternative embodiment, the rolling mechanism 52 includes a rolling wheel 521. A guide rod 522 is fixedly connected to the top of the rolling wheel 521. The guide rod 522 passes through and is slidably connected to the interior of the mounting plate 51. A pressure stabilizing assembly 523 is fixedly connected to the top of the mounting plate 51. The rolling wheel 521 is fixedly connected to the bottom of the driving end of the pressure stabilizing assembly 523. An oil pump assembly 525 is fixedly connected to the top of the adjusting plate 56. An oil pipeline 524 is arranged between the oil pump assembly 525 and the pressure stabilizing assembly 523. The oil pump assembly 525 is connected to an external oil supply system.

[0034] It should be noted that the rolling wheel 521 is movably installed at the bottom of the mounting plate 51. The pressure stabilizing component 523 is used to maintain the pressure between the rolling wheel 521 and the asphalt mixture. The pressure stabilizing component 523 is used to keep the state of elastic top pressure contact between the rolling wheel 521 and the asphalt mixture. By controlling the height of the mounting plate 51 relative to the asphalt mixture, the pressure between the rolling wheel 521 and the pressure stabilizing component 523 is increased, and the pressure between the rolling wheel 521 and the pressure stabilizing component 523 is balanced with the pressure between the rolling wheel 521 and the asphalt mixture.

[0035] Embodiment 2. Refer to Figure 6 、 Figure 9 and Figure 10 On the basis of Embodiment 1, further, the pressure stabilizing component 523 includes an adjusting hydraulic rod 5231 fixedly connected to the top of the mounting plate 51. The bottom of the adjusting hydraulic rod 5231 is fixedly connected with a pressure plunger cylinder 5232. A pressure stabilizing plunger rod 5233 is slidably connected inside the pressure plunger cylinder 5232. The bottom of the pressure stabilizing plunger rod 5233 is fixedly connected with the rolling wheel 521. An oil inlet chamber 5234 and an oil return chamber 5235 are formed inside the adjusting hydraulic rod 5231. An oil inlet pipe 5237 is arranged outside the oil inlet chamber 5234, and an oil return pipe 5238 is arranged outside the oil return chamber 5235. A cylindrical hole 5239 is formed between the oil inlet chamber 5234 and the oil return chamber 5235. A matching valve column block 52310 is arranged outside the cylindrical hole 5239. A pressure regulating mechanism is arranged outside the valve column block 52310. An oil return pressure stabilizing mechanism is arranged inside the oil return pipe 5238. The oil delivery pipe 524 includes a two-way oil circuit, and the two-way oil circuits of the oil delivery pipe 524 are respectively communicated with the oil inlet pipe 5237 and the oil return pipe 5238.

[0036] It should be noted that the pressure stabilizing component 523 is connected to the rolling wheel 521 through the pressure stabilizing plunger rod 5233. When the rolling wheel 521 contacts the asphalt mixture, the mounting plate 51 is connected to the rolling wheel 521 through the pressure stabilizing plunger rod 5233, and the pressure of the rolling wheel 521 on the asphalt mixture is balanced with the internal pressure of the pressure plunger cylinder 5232.

[0037] Specifically, inside the adjusting hydraulic rod 5231, the oil inlet pipe 5237 pumps oil into the oil inlet chamber 5234. The hydraulic oil flows into the oil return chamber 5235 through the cylindrical hole 5239. The oil return chamber 5235 pumps oil into the pressure plunger cylinder 5232 to generate a downward pressure on the pressure stabilizing plunger rod 5233. And the resultant force of the internal oil pressure in the oil return chamber 5235, the pressure of the pressure regulating mechanism on the valve column block 52310 and the internal oil in the pressure plunger cylinder 5232 is equal to the internal oil pressure in the oil inlet chamber 5234, and the internal pressure in the oil return chamber 5235 is controlled by the oil return pressure stabilizing mechanism.

[0038] When the hydraulic oil forms an oil circuit circulation through the oil inlet pipe 5237, the adjusting hydraulic rod 5231, and the oil return pipe 5238, the hydraulic oil forms a stable pressure on the pressure stabilizing plunger rod 5233, thereby ensuring the stability of the pressure of the rolling wheel 521 on the asphalt mixture.

[0039] Reference Figure 6 and Figure 9 Furthermore, the oil inlet chamber 5234 flows into the oil return chamber 5235 through the cylindrical hole 5239. When the hydraulic oil passes through the cylindrical hole 5239, the hydraulic oil pushes the valve column block 52310, and the oil inlet volume is controlled by the position of the valve column block 52310 in the cylindrical hole 5239. When the valve column block 52310 is located to the right of the cylindrical hole 5239, the communication hole between the oil inlet chamber 5234 and the oil return chamber 5235 is smaller. When the valve column block 52310 is located to the left of the cylindrical hole 5239, the communication hole between the oil inlet chamber 5234 and the oil return chamber 5235 is larger.

[0040] Reference Figure 5 In an alternative embodiment, a plurality of groups of rolling wheels 521 are provided. The rolling wheels 521 are all installed at the bottom of the mounting plate 51 through the guide rods 522. Scale lines are provided on the outside of the guide rods 522. A pressure stabilizing assembly 523 is installed on the top of any one group of rolling wheels 521.

[0041] By providing a plurality of groups of rolling wheels 521, the detection effect of the rolling fluidity of the asphalt mixture is improved.

[0042] Reference Figure 6 and Figure 9 In an alternative embodiment, the pressure regulating mechanism includes a pressure regulating rod 52314 threadedly connected to the adjusting hydraulic rod 5231. A second pressure regulating spring 52313 is provided on the outside of the pressure regulating rod 52314. The end of the second pressure regulating spring 52313 is fixedly connected to a buffer slider 52312. The buffer slider 52312 is slidably connected inside the oil return chamber 5235. A first pressure regulating spring 52311 is provided between the buffer slider 52312 and the valve column block 52310.

[0043] Among them, the oil return chamber 5235 communicates with the pressure plunger cylinder 5232. A one-way valve 5236 is provided inside the connection hole between the oil return chamber 5235 and the pressure plunger cylinder 5232. A communication oil hole 52315 is opened on the outside of the pressure plunger cylinder 5232. The communication oil hole 52315 communicates with the cavity between the buffer slider 52312 and the pressure regulating rod 52314.

[0044] Reference Figure 6 and Figure 10, the oil return pressure stabilizing mechanism includes an isolation valve plate 52381 fixedly connected inside the oil return pipe 5238. An oil outlet pressure stabilizing ring 52382 is movably connected to the outside of the isolation valve plate 52381. An oil outlet pressure stabilizing spring 52383 is provided between the oil outlet pressure stabilizing ring 52382 and the oil return pipe 5238.

[0045] When performing the rolling fluidity detection on the asphalt mixture, when the asphalt mixture deforms due to the rolling action of the rolling wheel 521, the rolling wheel 521 deflects downward, resulting in a decrease in the oil pressure inside the pressure plunger cylinder 5232. Since the pressure plunger cylinder 5232 communicates with the cavity of the second pressure regulating spring 52313, the buffer slider 52312 deflects to the left, reducing the pressure between the valve column block 52310 and the oil inlet cavity 5234. The oil return pressure inside the oil return cavity 5235 remains unchanged. Therefore, the pushing stroke of the oil inlet cavity 5234 on the valve column block 52310 increases, and the amount of oil flowing from the oil inlet cavity 5234 into the oil return cavity 5235 increases. Then, the amount of oil flowing from the oil return cavity 5235 into the pressure plunger cylinder 5232 through the one-way valve 5236 increases, thus replenishing the oil amount in the pressure plunger cylinder 5232. When detecting the unevenness of the asphalt mixture surface and the rolling wheel 521 encounters a protrusion of the asphalt mixture, the pressure stabilizing plunger rod 5233 moves upward inside the pressure plunger cylinder 5232. Similarly, the pressure in the cavity of the second pressure regulating spring 52313 increases, and the pressure of the first pressure regulating spring 52311 on the valve column block 52310 increases. As a result, the amount of oil flowing from the oil inlet cavity 5234 into the oil return cavity 5235 decreases, and the amount of oil flowing from the oil return cavity 5235 into the pressure plunger cylinder 5232 through the one-way valve 5236 decreases, thereby achieving the effect of maintaining the stability of the pressure of the pressure stabilizing plunger rod 5233 on the asphalt mixture through the rolling wheel 521. When the asphalt mixture to be detected is concave during the rolling fluidity detection process, or when the rolling wheel 521 rolls over the protruding asphalt mixture, the stability of the pressure of the rolling wheel 521 on the asphalt mixture can be maintained, effectively ensuring the accuracy of the rolling fluidity detection of the asphalt mixture, reducing the pressure change between the rolling wheel 521 and the asphalt mixture due to the morphological change during the rolling fluidity detection process of the asphalt mixture, and thus affecting the accuracy of the final rolling fluidity detection of the asphalt mixture.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt mixture rolling fluidity testing device for road construction, comprising a main frame (1), a support platform (2) installed inside the main frame (1), the support platform (2) comprising a heating support plate (21) hinged to the main frame (1), an angle adjustment rod (22) for adjusting the angle of the heating support plate (21) is arranged between the heating support plate (21) and the support platform (2), a material spreading plate (23) is detachably installed on the top of the heating support plate (21), characterized in that: The main frame (1) is hingedly connected to a driving guide rail (3) on the outside, a supporting connecting rod (31) is hingedly connected between the driving guide rail (3) and the heating support plate (21), the main frame (1) is fixedly connected to an adjusting guide rail (4) on the outside, and a rolling fluidity detection mechanism (5) for fluidity detection is arranged on the outside of the driving guide rail (3) and the adjusting guide rail (4); The rolling fluidity detection mechanism (5) comprises a mounting plate (51), a rolling mechanism (52) is mounted on the top of the mounting plate (51), positioning rods (53) are fixedly connected to both sides of the mounting plate (51), and a driving assembly (54) and an adjusting slider (55) are arranged outside the positioning rods (53); The driving assembly (54) comprises a driving slider (541), a connecting block (542) and a fixing bolt (543); the driving slider (541) is drivably connected to the outside of the driving guide rail (3) in a sliding manner; the connecting block (542) is rotatably connected to the outside of the driving slider (541); the positioning rod (53) penetrates and is slidably connected to the inside of the connecting block (542); and the fixing bolt (543) is used to fix the position of the positioning rod (53) inside the connecting block (542); The outside of the adjusting slider (55) is rotatably connected to an adjusting plate (56), the adjusting plate (56) and the positioning rod (53) are slidably sleeved, and the outside of the adjusting slider (55) is provided with an adjusting bolt (551) for controlling the deflection angle of the adjusting plate (56).

2. The asphalt mixture rolling fluidity detection device for road construction according to claim 1 is characterized in that: The driving guide rail (3) and the heating support plate (21) are arranged in parallel, the two ends of the supporting connecting rod (31) are respectively hinged to the driving guide rail (3) and the heating support plate (21), the adjusting guide rail (4) is arranged horizontally, and the positioning rod (53) is respectively penetrated and slidably connected to the inside of the adjusting plate (56) and the connecting block (542).

3. The asphalt mixture rolling fluidity detection device for road construction according to claim 1 is characterized by: The rolling mechanism (52) comprises a rolling wheel (521), the top of the rolling wheel (521) is fixedly connected to a guide rod (522), the guide rod (522) penetrates and is slidably connected to the inside of the mounting plate (51), the top of the mounting plate (51) is fixedly connected to a pressure stabilizing assembly (523), the rolling wheel (521) is fixedly connected to the bottom of the driving end of the pressure stabilizing assembly (523), the top of the regulating plate (56) is fixedly connected to an oil pump assembly (525), an oil delivery pipe (524) is provided between the oil pump assembly (525) and the pressure stabilizing assembly (523), and the oil pump assembly (525) is connected to an external oil supply system.

4. The asphalt mixture rolling fluidity detection device for road construction according to claim 3 is characterized by: The pressure stabilizing assembly (523) comprises an adjusting hydraulic rod (5231) fixedly connected to the top of the mounting plate (51); a pressure plunger cylinder (5232) is fixedly connected to the bottom of the adjusting hydraulic rod (5231); a pressure stabilizing plunger rod (5233) is slidably connected inside the pressure plunger cylinder (5232); the bottom of the pressure stabilizing plunger rod (5233) is fixedly connected to the rolling wheel (521); an oil inlet chamber (5234) and an oil return chamber (5235) are provided inside the adjusting hydraulic rod (5231); an oil inlet pipe (5234) is provided outside the oil inlet chamber (5234); 7), an oil return pipe (5238) is arranged outside the oil return chamber (5235), a cylindrical hole (5239) is opened between the oil inlet chamber (5234) and the oil return chamber (5235), an adaptable valve column block (52310) is arranged outside the cylindrical hole (5239), a pressure regulating mechanism is arranged outside the valve column block (52310), an oil return pressure stabilizing mechanism is arranged inside the oil return pipe (5238), and the oil delivery pipe (524) includes a two-way oil circuit, and the two-way oil circuit of the oil delivery pipe (524) is respectively connected to the oil inlet pipe (5237) and the oil return pipe (5238).

5. The asphalt mixture rolling fluidity detection device for road construction according to claim 4, characterized in that: The rolling wheels (521) are provided in a plurality of groups. The rolling wheels (521) are all mounted on the bottom of the mounting plate (51) via guide rods (522). The guide rods (522) are provided with scale lines on the outside. A pressure stabilizing assembly (523) is installed on the top of any group of rolling wheels (521).

6. The asphalt mixture rolling fluidity detection device for road construction according to claim 4, characterized in that: The pressure regulating mechanism comprises a pressure regulating rod (52314) threadedly connected to the regulating hydraulic rod (5231); a second pressure regulating spring (52313) is arranged outside the pressure regulating rod (52314); a buffer slider (52312) is fixedly connected to the end of the second pressure regulating spring (52313); the buffer slider (52312) is slidably connected to the inside of the oil return chamber (5235); and a first pressure regulating spring (52311) is arranged between the buffer slider (52312) and the valve column block (52310).

7. The asphalt mixture rolling fluidity detection device for road construction according to claim 5, characterized in that: The oil return chamber (5235) and the pressure plunger cylinder (5232) are connected, a one-way valve (5236) is provided inside the connecting hole between the oil return chamber (5235) and the pressure plunger cylinder (5232), and a connecting oil hole (52315) is provided outside the pressure plunger cylinder (5232), and the connecting oil hole (52315) is connected to the cavity between the buffer slider (52312) and the pressure adjustment rod (52314).

8. The asphalt mixture rolling fluidity detection device for road construction according to claim 5, characterized in that: The oil return pressure stabilizing mechanism comprises an isolation valve plate (52381) fixedly connected to the inside of the oil return pipe (5238); an oil outlet pressure stabilizing ring (52382) is movably connected to the outside of the isolation valve plate (52381); and an oil outlet pressure stabilizing spring (52383) is provided between the oil outlet pressure stabilizing ring (52382) and the oil return pipe (5238).

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